Floor fixing assembly

Abstract

The present invention provides a floor fixing assembly, comprising a floor and a locking member. A first groove and a lower tenon are provided on a same side of the floor; the locking member comprises a first locking body, a second locking body, and a toggle locking bar; the first locking body and the toggle locking bar are respectively embedded into the first grooves of adjacent floors, and the second locking body is locked to the lower tenon of the floor connected on the same side as the toggle locking bar, thereby locking the adjacent floors in the horizontal direction and the vertical direction. The beneficial effects of the present invention are: adjacent floors can be mounted by only relative displacement in the vertical direction; since a plurality of measures for preventing the locking member from rotating are used between the locking member and the floor to make the locking member have a horizontal locking function and a vertical locking function when connected to adjacent floors, the requirement for ground flatness is low, adjacent floors would not be uneven, and mounting operations of the floors are simple and free from nails and adhesives and achieve low cost and high efficiency; in addition, a damaged floor can be replaced at any middle positions by means of the locking member.

Description

A floor fixing component Technical Field

[0001] This invention pertains to wood flooring or imitation wood flooring in building floor decoration projects (IPC classification E04F15). The invention relates to a floor fixing component, specifically a first groove and a lower tenon provided on the same side of the floor. Adjacent floorboards are tightly locked together by means of a locking component that flips and / or moves within the first groove of the floor. Background Technology

[0002] In the existing technology, flooring is mainly divided into two types: flat-edge flooring and click-lock flooring. Flat-edge flooring has male tenons and female grooves on opposite sides of its perimeter. The male tenon on one side of the flooring is moved and inserted into the female groove of the adjacent flooring, as shown in Figure 1-1. A male tenon 011 is provided on one side of the flat-edge flooring 01, and a female groove 012 that mates with the male tenon 011 is provided on the opposite side of the flooring 01. Figure 1-2 is a schematic diagram of the male tenon and female groove of two adjacent floorings connected together. As can be seen from Figure 1-2, adjacent flat-edge floorings are connected in the flooring... The vertical locking strength of the surface is very high, and there is little unevenness between adjacent flat-edge floorboards. However, since the flat-edge floorboards do not have horizontal locking strength, they need to be fixed to the wooden joists with nails from the male tenon side, or glued together with the male tenon and female groove of adjacent flat-edge floorboards. Another method is to glue the bottom of the flat-edge floorboards to the ground. These methods of installing flat-edge floorboards are not only time-consuming and labor-intensive, but also have high costs for installation materials such as joists, glue, and nails.

[0003] Click-lock flooring is mainly divided into two categories. Based on the existing click-lock flooring structure, one type has matching male and female tongues on opposite sides of the flooring, which are used for direct assembly. The other type uses independent click connectors to work with the flooring, with male and / or female tongues on the sides of the flooring that cooperate with the female and / or male tongues of the independent click connectors to fix adjacent floorboards.

[0004] First, let's look at click-lock flooring with mating male and female tongues on opposite sides. During installation, each floorboard needs to be tilted at a certain angle so that the male tongue of the tilted floorboard fits against the bottom edge of the female tongue of the already installed floorboard on the other side. Pressing down on one side of the tilted female tongue of the floorboard to be installed completes the installation of the adjacent floorboards. This type of click-lock flooring will be referred to as a slanted-insert click-lock flooring in this article.

[0005] The two opposite sides of the angled locking floorboards are respectively provided with mating male tenons 101 and female grooves 104, as shown in Figure 1-3. As shown in Figure 1-4, when installing the angled locking floorboards, the angled locking floorboards 10a must first be tilted at a certain angle so that the male tenon 101 is inserted into the female grooves 104 of the angled locking floorboards 10c and 10d. At the same time, the end of the angled locking floorboard 10b containing the female groove 104 must be lifted so that the male tenon 101 can enter the female groove 104. Then, the angled locking floorboards are pressed flat and locked together. The installation of adjacent beveled click-lock flooring is illustrated in Figure 1-5, which shows a cross-sectional view of the click connection after installation of adjacent beveled click-lock flooring 10. This type of beveled click-lock flooring cannot be installed independently by non-professionals. The beveled click-lock flooring is based on patents such as CN97190692.0, "Flooring Composed of Hardboard Units and Methods for Manufacturing Such Board Units," which were granted to Unilin Management Private Company in 2002. This series of patent applications has more than twenty patents to date, all with essentially the same structure. Due to the beveled click-lock design... During installation, the horizontal alignment of adjacent click-lock floorboards can be securely locked without the need for nails, joists, or glue. This offers significant advantages in installation, as click-lock floorboards do not require the joists typically used with traditional flat-edge floorboards. Instead, they can be installed using a floating method. The People's Republic of China National Standard GB / T20238-2018 defines floating floorboard installation as: a method of laying floorboards directly on a subfloor. Therefore, only a moisture-proof subfloor is needed to install click-lock floorboards. Using this method is faster and more convenient than using joists and nails or glue to fix flat-edge floorboards, reducing labor costs, increasing efficiency, and lowering the cost of auxiliary materials. Furthermore, with the increasing prevalence of underfloor heating, more and more people are choosing floating installation methods for flooring, making click-lock floorboards widely adopted by consumers.

[0006] Due to the long service life of click-lock flooring, there are increasingly more problems reported regarding its production, installation, after-sales service, and the application of the locking structure. The following is a basic description of the common problems with click-lock flooring.

[0007] Firstly, the processing of beveled click-lock flooring results in significant raw material waste. This is because the female groove of beveled click-lock flooring differs from that of flat-edge flooring. Flat-edge flooring's female groove is hidden within the side of the board, meaning it doesn't protrude from the surface; only the tenon side protrudes. In contrast, both the tenon and female groove of beveled click-lock flooring protrude beyond the surface. The area occupied by these tenons and grooves typically accounts for 4-10% of the finished beveled click-lock flooring surface area, sometimes even more, depending on the size of the finished flooring and the extent of the protrusion. The smaller the surface area of ​​a single beveled click-lock flooring plank, the greater the raw material waste. Secondly, because beveled click-lock flooring has tenons and female grooves on opposite sides that work together, two different sets of tongue-and-groove cutting tools are required during production. This places relatively high demands on the equipment, and adjusting the cutting tools is cumbersome, leading to low equipment efficiency.

[0008] If a herringbone pattern is required for installing angled or flat-edge click-lock floorboards, two sets of floorboards 11a and 11b with different arrangements of male and female tongues need to be manufactured for use, as shown in Figure 1-6. The male tongues of the angled or flat-edge click-lock floorboard 11a are 101a and 103a, respectively, and the female tongues are 102a and 104a, respectively. Similarly, the male tongues of the angled or flat-edge click-lock floorboard 11b are 101b and 103b, respectively. The female grooves of the tongue and groove of the herringbone floor 11b are 102b and 104b, respectively. As can be seen from Figure 1-6, the male and female grooves of the tongue and groove of the herringbone interlocking floor 11a and 11b are arranged differently on the side of the floor. This installation pattern makes the production and processing of the tongue and groove, surface coating process, packaging and storage of the herringbone interlocking floor complicated. During the installation process, floor 11a and floor 11b need to be used alternately. Therefore, the installation of the herringbone pattern increases the difficulty of installing the herringbone interlocking floor, resulting in low installation efficiency and high labor costs.

[0009] Secondly, when installing click-lock flooring, the first step is to select the direction of the floorboard arrangement, which can be a challenge for installers. Due to the uniformity of the male and female tongue and groove arrangement of click-lock flooring, the probability of reusing the cutting waste generated during installation is low. The area wasted during the installation of click-lock flooring accounts for approximately 3-10% of the actual net area after installation. The specific wasted area varies depending on the size of the room where the click-lock flooring is used, the arrangement method of the click-lock flooring, and the size of the click-lock floorboards. The smaller the room area and the larger the surface area of ​​the click-lock flooring, the greater the actual wastage.

[0010] After-sales repair of click-lock flooring, including replacing the floorboards, is very complicated. Typically, the floorboards are removed piece by piece from the wall, which can easily damage other components, such as baseboards, and may also damage surrounding undamaged floorboards during removal. Alternatively, the floorboards to be replaced can be cut off with a cutting tool. Nowadays, the methods and tools for cutting out damaged click-lock floorboards from the middle are well-established. With a skilled technician, removing a single piece of floorboard using a cutting tool usually takes only 5-20 minutes, depending on the size of the floorboard and prior installation. The methods for installing flooring vary, but because the male and female tongues of the beveled click-lock flooring protrude from the surface, the protruding male and female tongues around the new beveled click-lock flooring must be cut off. The back of the new beveled click-lock flooring is then glued to the floor. This repair method is complicated and costly. Since the newly installed beveled click-lock flooring lacks the male and female tongues on its sides, it's impossible to position and fix it to the adjacent flooring at the same height, making it difficult to ensure surface flatness. Furthermore, using glue to fix the newly installed flooring can easily lead to it coming unglued, loosening, and warping later on.

[0011] It is particularly important to note that because angled click flooring requires installation at a certain angle, this method means that the click-lock connection function is only applicable to rectangular floorboards. Therefore, angled click flooring cannot be used on irregularly shaped floorboards such as triangles, parallelograms, hexagons, and curved sides. Parallelograms are commonly referred to as herringbone flooring in this field, and will be referred to as herringbone flooring in this article.

[0012] Due to the aforementioned problems with the angled locking flooring, relevant manufacturers have spared no effort in researching and improving it, hoping to design a locking flooring that does not require the male and female tenons to protrude from the flooring surface and does not require installation at a certain angle. Researchers have designed the flooring to have grooves and / or tenons uniformly cut on the sides, which are then locked together with locking connectors that match the grooves and / or tenons.

[0013] Based on their connection function and materials, locking connectors can generally be divided into two types. One type is made of materials such as plastic, ABS engineering plastic, or elastic metal materials, which have a certain degree of elasticity. This article will refer to them as elastic locking connectors.

[0014] Another type is the locking connector made of metal, metal alloy or high-strength polymer material. The locking connector itself is basically inelastic and is not easy to deform and / or break. This article will refer to it as rigid locking connector.

[0015] To connect flooring using elastic locking connectors, it is essential to ensure that certain structural components of the connectors have a certain degree of elasticity. This ensures that the grooves and / or tenons of the flooring can be inserted into the tenons and / or grooves of the elastic locking connector, thus completing the connection and fixation between the flooring and the elastic locking connector.

[0016] The following describes the problems associated with using snap-fit ​​connectors to connect the floor.

[0017] Representative examples of using elastic locking connectors to connect flooring include Chinese invention patents CN2397201Y ("Combined Structure of Wood Flooring") and CN102493625 A ("Lock-on Board Connector and Board Material Thereof"). Taking CN102493625 A as an example, the board connector used in this invention is elongated and slightly inverted T-shaped when viewed from the end. This slightly inverted T-shaped board connector is symmetrically arranged on both sides and has a base plate forming the inverted T-shape and a vertical part located in the middle of the upper surface of the base plate. Other technical features are detailed in patent CN102493625. The invention discloses that the board connector and other similar elastic locking connectors have an elastic base plate at the bottom. Both types of floorboards using these elastic locking connectors have matching tenons and / or grooves on the same side. When installing this type of flooring, one side of the elastic locking connector is first inserted into the side of the floorboard. The floorboard to be installed needs to be moved horizontally against the side of the elastic locking connector before being pressed down to complete the connection between adjacent floorboards. It should be noted that, according to the instructions and drawings of CN102493625 A "Lock-on Board Connectors and Their Boards," the floorboards must be moved horizontally first and then pressed down. Therefore, it is difficult to effectively solve the problem of splicing more complex patterns and colors, and when construction requirements are high, such as when a floorboard needs to be seamlessly joined with the edge of a wall or tile.

[0018] Another problem with using elastic locking connectors to connect floorboards is that, since the upper sides of adjacent floorboards are not pressed down vertically on the same vertical plane, but rather need to be moved horizontally first and then pressed down on the floorboard to be installed, see the instructions and attached figures 3 to 7 of CN102493625A "Lock-on Board Connectors and Their Boards" for details. This installation procedure means that if the middle floorboard needs to be replaced, after removing the middle floorboard, one side of the elastic locking connectors around the remaining floorboards will protrude from the surrounding floorboards. Before the floorboard to be installed can be inserted, tools must be used to lift and tilt the floorboards around the area to be inserted at a certain angle so that the floorboard to be installed can be inserted. This method of replacing floorboards cannot be completed by one person alone, and the replacement is extremely difficult. In particular, the replacement of long strips or large-sized floorboards often leads to failure.

[0019] There is a problem with the horizontal engagement strength between the elastic locking connector and the floor when using it to connect floorboards. The main reason is that when the tenon and / or groove of the floorboard is inserted into the groove and / or tenon of the elastic locking connector, the elastic material of the connector is used to deform the bottom plate of the connector downwards so that it can be inserted into the tenon of the floorboard. Secondly, the locking block on the base of the elastic locking connector and the tenon of the floorboard are designed with an arc or bevel structure, as detailed in the instructions and figures 3 to 7 of CN102493625 A "Lock-on Board Connectors and Their Boards". Therefore, when the wood flooring is exposed to high humidity, the wood flooring will expand and open, which can cause the floorboard to separate from the elastic locking connector, resulting in unevenness and gaps between adjacent floorboards.

[0020] Using elastic locking connectors to connect floorboards can lead to insufficient vertical locking strength between adjacent floorboards. This can cause height differences between adjacent floorboards when the floorboards are under heavy stress. This is mainly because a certain thickness of moisture-proof and shock-absorbing membrane needs to be laid on the bottom of the floorboards during installation. The elasticity of the base plate of the elastic locking connector causes adjacent floorboards to undulate and create height differences when the floorboards are under heavy stress.

[0021] Since the materials used to manufacture elastic locking connectors are usually plastics or ABS engineering plastics, their chemical structure will gradually be damaged under the influence of surrounding environmental conditions such as air, light and heat over a long period of time, resulting in deterioration of physical properties and reduction of mechanical properties. Eventually, they may become hard and brittle or soft and sticky, no longer suitable for use, thus affecting the firmness and strength of the connection between the floor and the elastic locking connector.

[0022] To address the above issues, the applicant previously designed a rigid locking connector that requires no horizontal movement and only needs to be pressed downwards in the vertical direction to connect adjacent floorboards. The applicant filed for and received utility model patent authorization on October 27, 2020, CN211775350U, "A Fixing Fastener and Decorative Material Fixing Assembly." Referring to the published drawings, the second decorative material fixing assembly in the embodiments includes the aforementioned fixing fastener and decorative material. A slot for fixing a limiting plate is provided on the inner side of the decorative material. Each end of the inner side of the decorative material has a slot, and the end of each slot has a closing portion. The closing portion abuts against the space between adjacent first and second baffles. Pressing the decorative material causes the closing portion to rotate and fix it. The distance between the two limiting plates is slightly smaller than the distance between the two slots for further tightening and fixing the decorative material. This method is applicable to the fasteners shown in Figures 3, 5, and 6. The installation process of the fastener in Figure 3 can be seen in Figures 12-1 to 12-3. As can be seen from the above figures, the decorative material in this embodiment is flooring. Since the sides of the slots at the bottom of the flooring are perpendicular to the horizontal plane of the flooring, the limiting plates on both sides of the base plate of the fastener are inserted into the two slots at the bottom of the flooring. The advantage of locking the limiting plates with the slots of the flooring is that the locking strength of the side of the flooring in the horizontal direction is very high. In addition to this advantage, the locking technology still has the following problems in practical applications.Firstly, the cost of fasteners is very high. These fasteners consist of two parts: the first part, referred to as the fastener body, comprises a base plate, a pivot, and a limiting plate; the second part is the locking mechanism, which includes a pivot, a first stop plate, and a second stop plate. Because the vertical thickness of the floor's edge is small, the slots at the bottom of the floor are positioned horizontally and / or in a location between the limiting plates on either side of the inner wall of the groove on the inner side of the floor, towards the center of the floor. This results in a large bottom width for the fastener. The requirement for a relatively wide width results in excessively high costs for the main body of the fastener. Secondly, the additional need for a pivot on the base plate to insert the lock not only increases the overall cost of the fastener but also adds labor costs associated with assembling the lock and the fastener body. Furthermore, because the pivot on the fastener body has a limiting slope, the lock must be moved from one side of the base plate of the fastener body, parallel to the pivot, to complete the pre-attachment of the lock to the fastener body. Since the tolerance between the diameter of the pivot and the inner diameter of the lock's pivot body is very small, pre-attaching the lock to the pivot is difficult and labor-intensive. Therefore, a set of fasteners consisting of two components is very expensive. Since flooring differs from wall panels, floorboards are typically smaller, requiring a large number of fasteners during installation. The cost of using this type of fastener in flooring is far higher than other click-lock flooring options, even exceeding the cost of angled click-lock flooring. Secondly, this type of fastener also has disadvantages in flooring installation efficiency. Because the first and second stoppers protrude very short from the outer diameter of the rotating body, pressing the floorboard into the previously installed floorboard while it is not flat can easily cause the floorboard to tilt downwards. The edge of the floorboard at one slanted end does not fall into the space between the first and second baffles, causing the edge to fall directly below the second baffle. This results in the failure to secure the adjacent floorboards, requiring the removal of the incorrectly installed floorboards and the repetition of the installation steps, thus leading to low installation efficiency. Furthermore, unlike wall panels, floorboards typically have a thickness between 8-18mm. Since the thickness of this type of fastener is determined by the thickness of the base plate, the diameter of the pivot, and the outer diameter of the locking mechanism, it is not suitable to use this type of fastener to connect and secure floorboards with a thickness of less than 14.5mm in the existing technology.Furthermore, there are still issues with the locking strength during installation, particularly in the vertical direction of the floor surface. Unlike wall panels, flooring can experience height differences at the joint when two adjacent floorboards bear different loads, or when one floorboard is slightly warped or bent relative to the other. As shown in Figure 4-2 of the applicant's published patent CN110924614A, the first and second baffles form a V-shape. As shown in Figure 13, when the floor is installed, the first and second baffles rest against the upper and lower inclined surfaces of the floorboard joint. This locking mechanism cannot securely fasten the fasteners to the floor, potentially leading to height differences between adjacent floorboards at the joint.

[0023] The applicant filed a utility model patent application (CN219138238U) in 2022, which was granted on June 6, 2023, entitled "Hidden Press-lock Connector and Grooved Wood Flooring." The flooring has a central groove around its perimeter, with steps and a bottom groove structure on the inner wall of the groove. The connector has a hook end and an arc plate end at its two ends, with the hook end having multiple levels of protruding teeth on its outer edge. By inserting the connector between the mating grooves and pressing down the ground plate, the hook end and the arc plate end of the connector simultaneously flip in opposite directions and are synchronously embedded into the two side grooves. The connector is tightly locked and embedded within the floorboard groove, forming an interlayer locking mechanism. The toothed end and the arc plate end are respectively embedded into the two mating grooves on adjacent floorboards, completing the splicing of the floorboards. The advantages of using this connector to connect the floorboards are: firstly, the installation method still maintains the principle of not requiring horizontal movement of the floorboards, only vertical pressing for installation; secondly, because the connector has no base plate and is small in size, it does not require multiple independent parts to be combined into a connector, thus reducing the cost of the connector; in addition to these advantages, the concealed press-locking mechanism... The disadvantages of this connector are as follows: After the connector is inserted into the groove, when the floor surface is subjected to relatively large forces and / or the flatness of the ground beneath the floor is poor, the connector may still rotate to some extent in the groove. This prevents the connector from maintaining a stable angle with the floor, leading to height differences at the joints between adjacent floorboards. Secondly, this pre-fixing method of the floor and connectors still has the problem of pre-attached connectors falling off. In particular, the pre-attached connectors in the groove require external force to accurately position the protrusions on the floorboard, making it difficult to accurately position them. Furthermore, some pre-attached connectors in the groove are prone to partial detachment because the floorboard surface usually has a slight curvature, causing multiple connectors on the same side to be out of alignment. This prevents the pre-attached connectors on the floor to be installed from being simultaneously inserted into the groove of the floorboard already installed on the ground, and causes some pre-attached connectors embedded in the groove to fall off. This not only increases the difficulty of installation but also makes it impossible for non-professionals to complete the installation independently.

[0024] In addition, when repairing or replacing floorboards using concealed snap-lock connectors, if the strip floorboard is too long, for example, exceeding 1200mm in length, some connectors that have already been hooked onto the mother groove of the new floorboard may fall off during the movement of the floorboard. Repairing or replacing long floorboards usually requires the assistance of multiple people and cannot be done by non-professionals.

[0025] The above provides a detailed and objective description of the problems existing in mainstream flooring technologies, including installation methods, application scope of locking mechanisms, vertical locking strength of the floor surface, horizontal locking strength of the floor side, flooring installation and repair / replacement, raw material costs in flooring manufacturing, production efficiency, pre-installation of locking connectors with the flooring before installation, and the cost of locking connectors. However, in the existing technology, flat-edge flooring clearly offers the best vertical locking strength on the floor surface. The applicant's utility model patent CN2117, applied for in 2019 and granted on October 27, 2020, is relevant. The locking method of the flooring and fixing fastener in 75350U, "A Fixing Fastener and Decorative Material Fixing Component," achieves optimal horizontal locking strength on the side of the flooring. Because suspended flooring is simple and quick to install, requiring no joists or other materials, this method is very popular in the market. However, the vertical locking strength on the front of the flooring and the horizontal locking strength on the side of the flooring remain key concerns for those skilled in the art. In existing technologies, regardless of whether it's a diagonally inserted locking floor, a flooring using elastic or rigid locking connectors, after selecting the suspended installation method, these three types of locking flooring have experienced… Due to factors such as changes in humidity, unevenness of the ground, and structural design defects in the flooring or its locking system, creaking noises are common when adjacent floorboards are subjected to heavy loads. This noise problem causes inconvenience for flooring manufacturers, traders, installers, and consumers. Furthermore, the lack of standardized liability assessment for creaking issues frequently leads to customer complaints and even legal action. Therefore, China enacted the "Law of the People's Republic of China on Wooden Flooring" in 2006 and revised it in 2018. The national standard GB / T20238-2018, "Installation, Acceptance and Use Specifications," provides detailed regulations for the installation, acceptance and use of suspended wood flooring. Article 6 of this standard, "Requirements for Installation and Acceptance of Suspended Wood Flooring," stipulates that the ground surface for suspended wood flooring installation must meet the following requirements: The flatness of the ground should be checked using a 2m straightedge, and the maximum chord height between the straightedge and the ground should be ≤3mm (see other provisions in Article 6.2.2 of GB / T20238-2018 for details). This standard requires that the ground flatness must meet the standard's requirements before flooring installation, as detailed in Article 6.2.5 of the standard.The fourth regulation regarding flooring noise during use states that it should be inconspicuous in the main walking areas. This permissible noise in the main walking areas, despite the stringent requirements for floor flatness, is based on the fact that existing technology is prevalent and there is no effective technical solution to address this issue. Furthermore, after-sales service for handling such noise remains difficult. Therefore, relevant companies have made technical improvements. One such improvement involves applying paraffin wax to the joint between the tongue and groove of existing flooring to increase lubrication and reduce the coefficient of friction, thus reducing noise from rotation and / or movement when walking on the floor surface. Other companies use polypropylene, PTFE, or PVC films (within 0.5mm thickness) between the tongue and groove to reduce noise. For example, Daya (Jiangsu) Flooring Co., Ltd., one of the companies using angled locking technology, applied for and obtained utility model patent CN208668859U in 2018 for "Reducing Noise in Click-lock Flooring". The known locking mechanism has been described, but practice has shown that it does not always work smoothly, and the noise problem is difficult to keep under control. Therefore, companies have opted to use adhesive to bond the bottom of the floorboards to the ground. Using adhesive essentially strengthens the vertical locking strength of adjacent floorboards on the floor surface and the horizontal locking strength on the sides, especially the vertical locking strength, thus reducing noise generated when walking on the floor. However, the disadvantages of using adhesive to glue the click-lock floorboards to the ground are also obvious: First, it requires a large amount of adhesive, involves many and cumbersome installation steps, and has extremely low installation efficiency, thus increasing the material and labor costs of installing the floorboards; second, the adhesive contains some volatile substances, which are harmful to human health; third, after installation with adhesive, if the floor surface is scratched or damaged during use, removing the glued floorboards for later repairs is extremely difficult and can easily damage the self-leveling layer and other undamaged floorboards.

[0026] The construction of a high-strength security locking system is conceivable, and the design capabilities for connecting flooring are virtually limitless. Continuing to use rigid interlocking connectors not only enables vertical installation but also allows the interlocking technology to be applied to various irregular shapes such as triangles, parallelograms, hexagons, and curved sides. The rigidity of the material in the connectors ensures a very stable fit between the flooring and the connectors, resulting in a very long service life. However, beyond these advantages, there is still room for improvement in both rigid interlocking connectors and the flooring used with them. For example, improvements could be made to address the issue of the rigid interlocking connectors, fixed within the flooring groove, becoming unstable at a certain angle under relatively heavy loads, leading to easy rotation. Furthermore, further improvements can be made to the rigid interlocking mechanism itself. The technical solution of pre-hanging the connectors and flooring before installation makes it difficult for the rigid locking connectors to fall off from the pre-hanging state of the flooring's groove. In addition, some technical advantages of these locking systems, such as the strong locking strength in the vertical direction of the flooring front, have not yet been fully utilized, especially in wood flooring systems that are prone to deformation due to climate change, such as changes in the humidity of the flooring's usage environment. There is still room for further improvement. In addition, there is also the possibility of further improvement in the inlay of other auxiliary materials for personalized needs. For example, without changing the flooring structure, decorative locking strips can be added between adjacent floorboards simply by replacing the rigid locking connectors with toothed U-shaped locking connectors. Technical issues

[0027] To address the shortcomings of existing technologies, this invention provides a floor fixing component to solve the problems of insufficient vertical locking strength between adjacent floor surfaces and insufficient horizontal locking strength between adjacent floor sides in existing technologies.

[0028] This invention further solves the problem that when using a suspended flooring installation method, adjacent floorboards are prone to making noise during use, especially due to insufficient vertical locking strength of adjacent floorboard surfaces, which causes pressure on the floor surface.

[0029] This invention further improves the performance of wood flooring, especially single-layer wood flooring that is prone to shrinkage or expansion and deformation due to humidity changes, and addresses the problem of the locking mechanism not being securely fastened to the floor due to changes in climate humidity.

[0030] This invention solves the problem that external force is needed to pre-attach the locking components to the floor, and that it is difficult to accurately position the locking components pre-attached in the floor groove.

[0031] This invention further solves the problem that the locking fasteners pre-installed in the floor grooves are prone to falling off during floor installation, thereby further solving the problems of cumbersome floor installation steps, low efficiency, and complex installation and disassembly techniques.

[0032] This invention solves the problem that the locking technology cannot be fully and completely applied to various irregular patterns such as triangles, parallelograms, hexagons, and curved sides.

[0033] This invention solves the problem of excessive material waste during the production and processing of flooring; this invention also solves the problem of complex flooring installation processes that make it impossible for non-professionals to install the flooring themselves.

[0034] This invention further solves the problems of cumbersome after-sales maintenance and floor replacement procedures, low replacement efficiency, and insufficient firmness of the replaced floor.

[0035] This invention further solves the problem of the difficulty in installing decorative retaining strips between adjacent floorboards. Technical solutions

[0036] To solve the above-mentioned technical problems, the first technical solution provided by the present invention is as follows: a floor fixing component, including a floor and a locking member, wherein the side of the floor is provided with a first groove and a lower tenon, the upper part of the first groove is provided as an upper protrusion, the lower surface of the upper protrusion is provided as the bottom surface of the upper protrusion, the outer end surface of the upper protrusion is provided as an upper vertical surface, the lower surface of the lower tenon is provided as the bottom surface of the lower tenon, the outer end surface of the lower tenon is provided as the lower vertical surface, and the inner bottom surface of the first groove is provided as the bottom sidewall of the first groove;

[0037] The present invention further provides that the first groove and the lower tenon are disposed on the same side of the floor, the first groove is above the lower tenon, the lower surface of the first groove is set as the bottom surface of the first groove, the upper surface of the lower tenon is set as the upper surface of the lower tenon, and the bottom surface of the first groove and the upper surface of the lower tenon are on the same plane, that is, the bottom surface of the first groove and the upper surface of the lower tenon overlap.

[0038] An upper groove with an opening facing downwards and a lower groove with an opening facing downwards are respectively provided on the bottom surface of the upper protrusion and the bottom surface of the lower tenon;

[0039] In the horizontal direction and / or position, the upper groove is between the bottom sidewall of the first groove and the upper vertical surface, and the lower groove is between the bottom sidewall of the first groove and the lower vertical surface;

[0040] The floor also includes a bottom cut portion, which, in the vertical direction and / or position, is the space between the bottom surface of the lower tenon and the bottom surface of the floor;

[0041] The bottom surface of the lower tenon is connected to the lower vertical surface to form an inclined surface, which is called the bottom inclined surface of the lower tenon.

[0042] The lower tenon extends horizontally inward to the upper facade, that is, it extends in the direction and / or position toward the center of the floor.

[0043] The present invention further provides that the locking element includes a first lock body, a second lock body, and a lever lock bar, and the locking element is elongated.

[0044] The present invention further provides that the first lock body includes a first tenon, a first oblique pressure strip and a limiting lock head, and the second lock body includes a vertical strip, a second oblique pressure strip, a second base plate and a second locking strip.

[0045] The present invention further comprises that the lower edge of the vertically placed vertical strip is connected to one side edge of the horizontally placed second base plate in an L-shape, the second clip is connected to the upper surface of the other side edge of the second base plate, the second inclined pressure strip is placed obliquely, the bottom surface of the second inclined pressure strip is set as the bottom surface of the second inclined pressure strip, the upper edge of the vertical strip is connected to the lower edge of the second inclined pressure strip, and with the vertical strip as a reference, in the horizontal direction and / or position, the second inclined pressure strip and the second base plate are on the same side;

[0046] Furthermore, the first inclined pressure strip is a diagonally placed strip, with its bottom surface defined as the bottom surface of the first inclined pressure strip. The lower edge of the first inclined pressure strip is connected to the upper edge of the vertical strip. The first and second inclined pressure strips are connected together in a slightly V-shape, and the first, second, and vertical strips are connected together in a slightly Y-shape. One side of the first tenon is defined as the inner side of the first tenon, and the bottom edge of the inner side of the first tenon is connected to the upper edge of the first inclined pressure strip. The side opposite to the inner side of the first tenon is defined as the outer side of the first tenon. The upper surface is designated as the upper surface of the first tenon, and the lower surface of the first tenon is designated as the bottom surface of the first tenon, which is a locking surface. The paddle lock bar is an obliquely placed strip, and the lower edge of the paddle lock bar is connected to the upper edge of the second oblique pressure bar in a slightly V-shape. The paddle lock bar and the second oblique pressure bar form an obtuse angle in the slightly V-shape, and the obtuse angle formed by the paddle lock bar and the second oblique pressure bar faces the second tenon. The second oblique pressure bar, the vertical bar, the second base plate, and the second locking bar are connected together to form a groove, which is designated as the second groove.

[0047] A convex strip is formed by connecting one side of the bottom surface of the first tenon with the lower edge of the outer side surface of the first tenon, which is designated as a rotating convex strip. A convex strip is formed by connecting one side of the upper surface of the first tenon with the upper edge of the inner side surface of the first tenon, which is designated as a second convex strip.

[0048] The present invention further comprises the second card strip including a second card strip inner surface, a second card strip upper surface, and a second card strip outer surface arranged sequentially in the horizontal direction and / or position. The second card strip inner surface faces the vertical strip. The lower edge of the second card strip inner surface is connected to the upper surface of the second base plate. The upper edge of the second card strip inner surface is connected to one side edge of the second card strip upper surface. The other side edge of the second card strip upper surface is connected to the upper edge of the second card strip outer surface. The lower edge of the second card strip outer surface is connected to the edge of the upper surface of the second base plate. The second card strip outer surface can be a planar and / or arcuate surface. The second card strip inner surface is a carding surface.

[0049] The present invention further provides that the paddle lock bar is an obliquely placed strip-shaped body, the surface of the paddle lock bar facing the first lock body is the upper surface of the paddle lock bar, the other side of the paddle lock bar opposite to the upper surface of the paddle lock bar is the bottom surface of the paddle lock bar, and the upper side of the paddle lock bar is the upper guide surface of the paddle lock bar, which is an arc-shaped surface;

[0050] An inclined surface is formed between the upper surface of the paddle lock bar and the upper edge of the upper guide surface of the paddle lock bar to serve as the abutment surface of the paddle lock bar. The abutment surface of the paddle lock bar is a locking surface. An inclined surface is formed between the bottom surface of the paddle lock bar and the lower edge of the upper guide surface of the paddle lock bar to serve as the lower guide surface of the paddle lock bar.

[0051] The bottom surface of the paddle lock bar is connected to the bottom surface of the second inclined pressure bar to form an inclined surface, which is designated as the third guide surface. The upper edge of the third guide surface is connected to the lower edge of the bottom surface of the paddle lock bar to form a convex strip, which is designated as the ninth convex strip. The lower edge of the third guide surface is connected to the upper edge of the bottom surface of the second inclined pressure bar to form a convex strip, which is designated as the tenth convex strip.

[0052] The limiting lock head includes a first abutting surface, an inner protrusion of the limiting lock head, and an upper surface of the limiting lock head, wherein the first abutting surface and the upper surface of the limiting lock head are both locking surfaces;

[0053] The limiting lock head protrudes from the upper surface of the first tenon. In the horizontal direction and / or position, the lower edge of the first abutment surface is connected to the upper surface of the first tenon. The upper edge of the first abutment surface is connected to one side edge of the upper surface of the limiting lock head to form a protrusion, which is the inner protrusion of the limiting lock head. The other side of the upper surface of the limiting lock head extends downward and inward in an arc shape and is connected to the upper edge of the outer surface of the first tenon. The limiting lock head part protrudes from the outer surface of the first tenon.

[0054] In a further embodiment of the present invention, an inclined surface is formed between the outer edge of the bottom surface of the upper protrusion and the lower edge of the upper vertical surface, which is designated as the upper inclined surface; an inclined surface is formed between the outer edge of the upper surface of the lower tenon and the upper edge of the lower vertical surface, which is designated as the lower inclined surface; a convex strip is formed between the upper edge of the lower inclined surface and the outer edge of the upper surface of the lower tenon, which is designated as the fourth convex strip; and a convex strip is formed between the lower inclined surface and the lower vertical surface, which is designated as the sixth convex strip.

[0055] The present invention further provides that the bottom sidewall of the first groove is provided with an elastic adjustment groove extending horizontally inward.

[0056] The present invention further comprises the following: the upper groove includes a third abutment surface, a fourth abutment surface, an upper surface of the upper groove, an outer protrusion of the upper groove, and an inner protrusion of the upper groove; the third abutment surface extends upward and intersects with the upward extending surface of the fourth abutment surface, and the intersection point forms a straight line; the third abutment surface, the upper surface of the upper groove, and the fourth abutment surface are locking surfaces; the upper surface of the upper groove can be a plane and / or an arc surface; the upper surface of the upper groove can be parallel to the front surface of the floor; the upper surface of the upper groove can be an inclined surface; the upper surface of the upper groove extends upward and intersects with the upward extending surface of the fourth abutment surface, and the intersection point forms a straight line.

[0057] The lower edge of the third abutment surface connects with the edge of the bottom surface of the upper protrusion to form a protrusion, which is the outer protrusion of the upper groove. The portion of the bottom surface of the upper protrusion between the outer protrusion of the upper groove and the upper inclined surface is the outer bottom surface of the upper protrusion. The upper edge of the third abutment surface connects to one side edge of the upper surface of the upper groove. The other side edge of the upper groove connects to the upper edge of the fourth abutment surface. The lower edge of the fourth abutment surface connects with the edge of the bottom surface of the upper protrusion to form a protrusion, which is the inner protrusion of the upper groove. The portion of the bottom surface of the upper protrusion between the inner protrusion of the upper groove and the upper edge of the bottom sidewall of the first groove is the inner bottom surface of the upper protrusion.

[0058] The present invention further provides that, in the horizontal direction and / or position, the lower groove is provided with a lower groove guide surface, a lower groove outer surface, a lower groove inner inclined surface, a lower groove upper surface, and a lower groove inner surface in sequence from one side of the lower vertical surface toward the bottom sidewall of the first groove;

[0059] The bottom surface of the lower tenon is connected to the lower edge of the outer surface of the lower groove to form an inclined surface, which is the guide surface of the lower groove. The upper edge of the outer surface of the lower groove is connected to one side edge of the upper surface of the lower groove to form an inclined surface, which is the inner inclined surface of the lower groove. The other side edge of the upper surface of the lower groove is connected to the upper side edge of the inner surface of the lower groove, and the lower side edge of the inner surface of the lower groove is connected to the side edge of the bottom surface of the lower tenon.

[0060] The present invention further includes the flooring including the locking member; at least one locking member is connected to at least one side of the flooring, while there is no locking member on the opposite side of the side of the flooring where the locking member is already provided; and the first lock body of the locking member is disposed in the first groove of the flooring, the limiting lock head of the locking member abuts against the bottom surface of the upper protrusion, the upper surface of the paddle lock bar abuts against the upper vertical surface, and the second bottom plate and the second locking bar of the second lock body and the paddle lock bar all protrude outward from the upper vertical surface of the flooring;

[0061] The locking element may be at least one disposed on the side of the floor, and the length of the locking element shall not exceed the length between the bottom sidewalls of the first groove at both ends of the side of the floor connected to the locking element. Preferably, multiple locking elements with a length of 15mm-300mm are disposed at intervals on at least one side of the floor.

[0062] The present invention further provides that the limiting lock head also includes a second abutting surface, the second abutting surface being a locking surface, the second abutting surface facing the outside of the first lock body;

[0063] The limiting lock head protrudes from the upper surface of the first tenon between the outer side and the inner side of the first tenon. The upper edge of the second abutment surface is connected to one side edge of the upper surface of the limiting lock head. The lower edge of the second abutment surface is recessed into the limiting lock head and connects with the upper edge of the outer side of the first tenon to form an arc-shaped groove, which is the limiting lock head groove. The second abutment surface extends upward and intersects with the upward extension surface of the first abutment surface, and the intersection is a straight line.

[0064] The present invention further includes a third protrusion strip, wherein the lower edge of the first abutment surface is connected to the upper edge of the inner side of the first tenon to form a protrusion strip, which is the third protrusion strip.

[0065] The present invention further provides that the upper groove also includes a third groove, the third groove being a groove with an opening obliquely facing the opening of the first groove, and the third groove being disposed between the upper groove and the bottom sidewall of the first groove in the horizontal direction and / or position.

[0066] The third groove includes a third groove abutting surface, a third groove bottom surface, and a third groove inclined surface. The third groove abutting surface can be parallel to the front of the floor.

[0067] The third groove abutment surface can be inclined relative to the horizontal plane, and the third groove abutment surface is downward and inclined to the outside of the first groove opening.

[0068] The present invention further includes an upper bottom cut surface and a first protrusion, wherein the lower edge of the fourth abutment surface and the lower edge of the third groove abutment surface are connected to form a plane, which is the upper bottom cut surface.

[0069] The third groove abutting surface is connected to the upper bottom cut surface to form a protrusion as a pre-hanging limiting protrusion, and the upper bottom cut surface can be parallel to the front of the floor.

[0070] The upper bottom cut surface can be an inclined surface relative to the upper surface of the floor, and the upper bottom cut surface is inclined downward toward the bottom surface of the upper convex body.

[0071] One side edge of the upper bottom cut surface is connected to the lower side edge of the fourth abutment surface to form a convex strip, which is designated as the first convex strip.

[0072] The inclined surface of the third groove is connected to the edge of the bottom surface of the upper convex body to form a convex strip, which is set as the inner convex strip of the third groove.

[0073] The present invention further provides that the two opposite sides of the vertical strip are respectively provided with a first side surface and a second side surface, wherein the first side surface faces the second card strip.

[0074] A seventh protrusion is provided at the upper end of the first side facade of the vertical strip, and an eighth protrusion is provided on the second side facade of the vertical strip.

[0075] The seventh protrusion is provided with at least a seventh protrusion outer surface, a seventh protrusion lower strip and a seventh protrusion lower surface in the vertical direction from top to bottom; the eighth protrusion is provided with at least an eighth protrusion upper strip and an eighth protrusion outer surface in the vertical direction from top to bottom.

[0076] The seventh convex outer facade is parallel to the eighth convex outer facade, and the distance D6 between the line connecting the upper edge of the lower convex strip of the seventh convex body and the lower edge of the upper convex strip of the eighth convex body is greater than or equal to the vertical distance L13 between the seventh convex outer facade and the eighth convex outer facade.

[0077] The present invention further provides that, when the second base plate is placed horizontally, the vertical center line between the outer surface of the seventh convex body and the outer surface of the eighth convex body is used as the center line, and the bottom surfaces of the first and second inclined pressure strips are mirror images of each other on the locking member.

[0078] The present invention further provides that the second groove also includes a second groove cavity, which is disposed in the space portion of the projection area of ​​the lower surface of the seventh protrusion projected vertically downward onto the upper surface of the second base plate.

[0079] The present invention further provides that an inclined surface is formed between the lower inclined surface and the lower vertical surface as a third inclined surface, the upper edge of the third inclined surface is connected to the lower edge of the lower inclined surface to form a convex strip as the upper convex strip of the third inclined surface, and the lower edge of the third inclined surface is connected to the upper edge of the lower vertical surface to form a convex strip as the lower convex strip of the third inclined surface.

[0080] The invention further includes a locking element in the floor; the first abutting surface of the limiting lock head of the locking element abuts against the abutting surface of the third groove, the upper surface of the lever lock bar abuts against the upper surface of the floor, and the second bottom plate and the second locking strip of the locking element protrude outward from the upper surface of the floor; the locking element may be at least one on at least one side of the floor, and there is no locking element on the opposite side of the floor where the locking element is provided; wherein the length of the locking element does not exceed the length between the adjacent bottom sidewalls of the first groove on both sides of the floor connected to the locking element, and preferably multiple locking elements with a length of 15mm-300mm are spaced apart on at least one side of the floor.

[0081] The present invention further comprises the following: the abutment surface of the latching member is connected to the upper surface of the latching member to form a step that is concave inward toward the bottom surface of the latching member, which is set as the latching member support step; the upward inclined surface connected to the latching member support step is the latching member abutment surface; the upper surface of the first tenon of the latching member extends outward and protrudes from the outer side of the first tenon, and the outwardly protruding upper surface of the first tenon is an inclined surface; the side edge of the upper surface of the first tenon near the outer side of the first tenon is higher than the upper surface of the first tenon near the limiting lock head connection point. The purpose of this design is to enable the abutment surface of the third groove of the upper groove of the floor to abut against the upper surface of the first tenon, thereby increasing the connection stability between the latching member and the floor.

[0082] The second technical solution provided by the present invention is as follows: a third lock body replaces the first lock body of the lock buckle, and the lock buckle with the third lock body but without the first lock body is configured as a lock buckle with a third lock body.

[0083] The invention further provides that the third lock body includes a first base plate and a first locking bar.

[0084] The first base plate is placed horizontally, and one side edge of the first base plate is connected to the outer edge of the intersection of the vertical strip and the second base plate. With the vertical strip as a reference, in the horizontal direction and / or position, the first base plate is on one side of the first tenon, and the first locking strip is connected to the other side edge of the upper surface of the first base plate.

[0085] The upper surface of the first base plate and the upper surface of the second base plate are on the same plane, and the thickness of the first base plate and the thickness of the second base plate are the same.

[0086] The first card strip is provided with an inner surface, an upper inclined surface, an upper surface, and an outer surface in sequence in the horizontal direction and / or position.

[0087] The inner surface of the first card strip faces the direction of the vertical strip. The lower edge of the inner surface of the first card strip is connected to the upper surface of the first base plate. The upper edge of the inner surface of the first card strip is connected to one side edge of the upper surface of the first card strip to form an inclined surface, which is the upper inclined surface of the first card strip. The upper surface of the first card strip is connected to the upper edge of the outer surface of the first card strip on the other side. The lower edge of the outer surface of the first card strip is connected to the outer edge of the upper surface of the first base plate.

[0088] The present invention further includes the flooring including the third locking body fastener, which may be at least one fastener disposed on one of the opposite sides of the flooring, wherein the other side of the flooring opposite to the third locking body fastener does not have the third locking body fastener. Preferably, the length of the third locking body fastener is 15mm-300mm, and the third locking body fastener is disposed at intervals on at least one side of the flooring.

[0089] The abutting surface of the lever lock bar of the third lock body fastener abuts against the third abutting surface of the floor, the inner surface of the second locking bar of the third lock body fastener abuts against the outer surface of the lower groove, the bottom surface of the second inclined pressure bar of the third lock body fastener abuts against the lower inclined surface, the bottom surface of the lower protruding tenon abuts against the upper surface of the second base plate, and the first base plate and the first locking bar of the third lock body fastener protrude from the outer side of the lower surface of the floor.

[0090] The present invention further provides that the floor also includes the locking member and the locking member with a third locking body, and at least one locking member and one locking member with a third locking body are provided on the same side of the floor;

[0091] The first abutting surface of the limiting lock head of the locking member abuts against the third groove abutting surface, the upper surface of the lever lock bar abuts against the upper vertical surface of the floor, and the second bottom plate and the second locking bar of the locking member protrude from the outer side of the upper vertical surface of the floor.

[0092] The abutting surface of the lever lock bar of the third lock body fastener abuts against the third abutting surface, the inner surface of the second locking bar of the third lock body fastener abuts against the outer surface of the lower groove, the bottom surface of the second inclined pressure bar of the third lock body fastener abuts against the lower inclined surface, the bottom surface of the lower protruding tenon abuts against the upper surface of the second base plate, and the first base plate and the first locking bar of the third lock body fastener protrude from the outer side of the lower surface of the floor.

[0093] The present invention further provides that the locking member does not have the paddle lock bar, and the locking member without the paddle lock bar is designated as a locking member without paddle lock bar.

[0094] The present invention provides a third technical solution as follows: the locking fastener does not have the limiting lock head, and the locking fastener without the limiting lock head is set as a lockless locking fastener;

[0095] The upper edge of the inner side of the first tenon of the lock-free fastener is connected to the upper edge of the upper surface of the first tenon to form an inclined surface as the sixth abutment surface. The upper edge of the sixth abutment surface is connected to the upper surface of the first tenon to form a protrusion as the fifth protrusion. The sixth abutment surface is a locking surface, and the upper surface of the first tenon is a locking surface.

[0096] When the second base plate of the lockless fastener is in a horizontal state, the upper surface of the first tenon of the lockless fastener is flush with the abutment surface of the lever lock bar in the horizontal direction. The abutment surface of the lever lock bar can be a plane, and the abutment surface of the lever lock bar is parallel to the upper surface of the second base plate.

[0097] The present invention further provides that the floor has no upper groove, and the floor without the upper groove is defined as a floor without upper groove;

[0098] The grooveless floor also includes the locking fastener with a third locking body, which is fixed at a certain distance to the side of the grooveless floor. On one side opposite to the grooveless floor with the locking fastener with the third locking body, there is no locking fastener with the third locking body.

[0099] The locking fastener with a third lock body also includes an eleventh protrusion, and the eleventh protrusion also includes an upper surface of the eleventh protrusion, which is a locking surface.

[0100] The angle A1 formed by the connection between the upper surface of the second inclined pressure bar of the third lock body buckle and the upper surface of the paddle lock bar, facing the first lock body, is set to 35º≤A1≤180º. The abutting surface of the paddle lock bar of the third lock body buckle overlaps with the upper surface of the eleventh protrusion. The upper surface of the eleventh protrusion includes the abutting surface of the paddle lock bar. The upper surface of the eleventh protrusion is parallel to the upper surface of the second base plate.

[0101] The upper surface of the eleventh protrusion is parallel to the upper surface of the second base plate, and the vertical distance V8 between the horizontal extension line of the upper surface of the eleventh protrusion and the horizontal extension line of the upper surface of the second base plate is equal to the vertical distance V10 between the horizontal extension line of the bottom surface of the lower tenon and the horizontal extension line of the bottom surface of the upper protrusion.

[0102] The grooveless floor also includes the lockless fastener and the fastener with a third lock body. At least one lockless fastener and one fastener with a third lock body are provided on the same side of the grooveless floor.

[0103] The sixth abutting surface or the fifth protrusion of the lockless fastener abuts against the bottom surface of the upper protrusion, the upper surface of the lever lock bar abuts against the upper vertical surface of the floor without the upper groove, and the second bottom plate and the second locking strip of the lockless fastener protrude outward from the upper vertical surface of the floor.

[0104] The abutting surface of the lever lock bar of the third lock body fastener abuts against the third abutting surface of the floor without the upper groove; the inner surface of the second locking bar of the third lock body fastener abuts against the outer surface of the lower groove; the bottom surface of the second inclined pressure bar of the third lock body fastener abuts against the lower inclined surface; the bottom surface of the lower protruding tenon abuts against the upper surface of the second base plate; and the first base plate and the first locking bar of the third lock body fastener protrude from the outer side of the lower surface of the floor.

[0105] The present invention further provides that the side of the grooveless floor is an arc-shaped side, and the grooveless floor with an arc-shaped side is set as an arc-shaped side floor.

[0106] Furthermore, the lockless fastener used in conjunction with the curved side floor has a seventh protrusion on the first side of the vertical strip, and no eighth protrusion on one side of the second side of the vertical strip.

[0107] Furthermore, the first side of the vertical strip with the third locking body that is used in conjunction with the curved side floor does not have the seventh protrusion, while the eighth protrusion is provided on one side of the second side of the vertical strip.

[0108] The present invention provides a fourth technical solution as follows: a U-shaped body with a toothed rack replaces the vertical strip, and the locking member having the U-shaped body with a toothed rack but without the vertical strip is configured as a U-shaped toothed locking member.

[0109] Furthermore, the U-shaped rack and pinion fastener includes the seventh protrusion, the eighth protrusion, the U-shaped groove, and the toothed protrusion.

[0110] The toothed U-shaped body replaces the vertical bar of the locking fastener with a third lock body. The locking fastener with the toothed U-shaped body but without the vertical bar is set as a locking fastener with a U-shaped toothed third lock body. The locking fastener with a U-shaped toothed third lock body includes the seventh protrusion, the eighth protrusion, the U-shaped groove, and the toothed protrusion.

[0111] The present invention further provides that the outer side of the first tenon is provided with a first weight-reducing groove, the first weight-reducing groove being slightly trumpet-shaped, and the upper end of the connection between the first inclined pressure strip and the inner side of the first tenon is provided with a second weight-reducing groove. Beneficial effects

[0112] The present invention has the following beneficial effects: Since the first groove and the lower tenon are uniformly provided on the side of the floor and are used in conjunction with the locking assembly, neither the first groove nor the lower tenon protrudes from the surface of the floor. This transforms the male tenon and female groove of the conventional oblique-insertion locking floor into the actual usable area, improves the utilization rate of wood, reduces material costs, protects forest resources, and simplifies the floor production process, increases production efficiency, and reduces production costs.

[0113] The locking assembly features multiple anti-rotation structural designs to prevent it from rotating freely within the first groove of the floor, enhancing the vertical locking strength of adjacent floorboards. In cases of uneven ground, adjacent floorboards are locked together by the combination of the locking member and the locking member with a third locking body. This further improves the problem of rotation between the locking member and the floor, effectively mitigating the vertical unevenness of adjacent floorboards, and further enhancing the horizontal locking ability of the floorboards.

[0114] The present invention further improves and reduces the noise problem caused by the adjacent floorboards being subjected to force on the floor surface due to insufficient vertical locking strength of the adjacent floorboards and insufficient horizontal locking strength of the adjacent floorboards.

[0115] The present invention provides a locking fastener that is used in combination with the locking fastener with a third locking body to lock and fix the floor, so that the two layers of the first groove and the bottom surface of the lower tenon of the floor are locked and fixed in the horizontal direction at the same time. Therefore, it further improves the problem of height difference between adjacent floorboards caused by the deformation and twisting of the floor due to the combined action of internal stress of wood and / or environmental humidity and temperature.

[0116] The technical solution of the present invention can achieve the pre-hanging of the locking fastener to the floor without the aid of external force, and the pre-hanging of the locking fastener to the floor can be completed without complicated positioning. Non-professionals can quickly and easily complete the operation by following the steps of the drawings or video materials.

[0117] This invention further solves the problem of the locking element falling off the first groove;

[0118] Using the technical solution of this invention, adjacent floorboards can be interlocked vertically without needing to be moved or tilted at a certain angle. This allows the interlocking technology to be fully and completely applied to floorboards with any irregular pattern, including those with curved sides, such as hexagonal, triangular, herringbone, and other irregular patterns. Herringbone floorboards also do not require tongue and groove joints. Since the technical solution of this invention does not require horizontal movement of the floorboards to be installed, but only vertical pressing to lock and fix adjacent floorboards, it solves the problem of seamless connection between the floorboards and other components, such as when baseboards or tiles have already been installed.

[0119] The installation process of the floor and the locking components described in this invention is simple and quick, and can be completed independently by non-professionals.

[0120] This invention further solves the problem of difficult floor replacement during repair by using cutting tools to remove the flooring to be replaced from any position in the middle of the already installed floor. Then, the locking mechanism is removed and re-attached to the first groove of the adjacent flooring around the removed floor. Finally, the flooring to be installed is vertically pressed into the position of the removed floor, thus completing the floor replacement. This solves the technical problem of difficult floor repair and replacement. Furthermore, the installation of the floor eliminates the need for joists, nails, and adhesives, saving on installation material and labor costs, and improving installation quality.

[0121] This invention also expands into personalized products. For example, the snap-fit ​​strip can be embedded between adjacent floorboards without changing the floorboard structure. The snap-fit ​​strip can be easily installed by simply replacing it with matching fasteners, making the overall effect of the floorboard more aesthetically pleasing.

[0122] The locking assembly of this invention has a simple structure, high production efficiency, and low manufacturing cost. This is because the locking assembly only requires an extrusion mold and various metals, metal alloys, or high-strength non-metallic materials for precision extrusion (injection molding). It is then cut to the required length to form the locking assembly. The finished product has a smooth surface and wide applicability. In particular, the profiles of the locking assemblies made of metal materials have high precision, strong durability, and stability, making the locking and fixing of the floor and the locking assembly more secure and stable. This results in a longer service life after the locking assembly is locked and fixed to the floor. Attached Figure Description

[0123] Figure 1-1 is a cross-sectional schematic diagram of a flat-edge floorboard in the background art; Figure 1-2 is a cross-sectional schematic diagram of the connection method of a flat-edge floorboard in the background art; Figure 1-3 is a cross-sectional schematic diagram of a beveled locking fastener in the background art; Figure 1-4 is a schematic diagram of the installation of beveled locking floorboards piece by piece in the background art; Figure 1-5 is a cross-sectional schematic diagram of the connection method of beveled locking floorboards in the background art; Figure 1-6 is a schematic diagram of two different sets of male and female tenons and grooves arranged in a herringbone pattern for the installation of rectangular floorboards in the background art.

[0124] Figure 2 is a schematic diagram of the cross-sectional structure of the floor according to the first preferred embodiment of the present invention.

[0125] Figure 3 is a three-dimensional schematic diagram of the floor of the first preferred embodiment of the present invention shown in Figure 2.

[0126] Figure 4 is a schematic diagram of the cross-sectional structure of the locking element in the first preferred embodiment of the present invention.

[0127] Figure 5 is a three-dimensional schematic diagram of the locking component of the first preferred embodiment of the present invention shown in Figure 4.

[0128] Figures 6-1 to 6-5 are diagrams illustrating the pre-installation steps of the locking fastener in Figure 4 of the first preferred embodiment of the present invention, showing the steps of pre-hanging the fastener into the floor 2.

[0129] Figures 7-1 to 7-18 are schematic diagrams of typical installation steps of the adjacent floor in Figure 2 and the fastener in Figure 4 in the first preferred embodiment of the present invention.

[0130] Figure 8 is a schematic diagram of the cross-section of the floor in the preferred embodiment of the present invention (with a third groove).

[0131] Figure 9 is a three-dimensional schematic diagram of the floor in the preferred embodiment of the present invention shown in Figure 8 (with a third groove).

[0132] Figure 10 is a schematic cross-sectional view of the locking element in the preferred embodiment of the present invention (with a second abutting surface).

[0133] Figure 11 is a three-dimensional schematic diagram of the locking element in the preferred embodiment of the present invention shown in Figure 10 (with a second abutting surface).

[0134] Figure 12 is a partial enlarged schematic diagram of the floor in the preferred embodiment of the present invention (with corners A5 and A6).

[0135] Figures 13-1 to 13-6 show typical installation steps for the locking fastener 3 in Figure 10 to be installed into the floor 2 in Figure 8 in the preferred embodiment of the present invention.

[0136] Figures 14-1 to 14-21 are schematic diagrams of typical installation steps for locking and fixing the locking fastener of Figure 10 to the adjacent floor of Figure 8 in the preferred embodiment of the present invention.

[0137] Figure 15 is a schematic diagram of the cross-sectional structure of the locking fastener with a third lock body in the third preferred embodiment of the present invention (with a third lock body but no first lock body).

[0138] Figure 16 is a three-dimensional structural diagram of the third lock body and locking fastener in the third preferred embodiment of the present invention shown in Figure 15.

[0139] Figures 17-1 to 17-5 are installation steps for pre-hanging the floor in Figure 8 by setting the locking fasteners in Figure 15 at intervals in the third preferred embodiment of the present invention.

[0140] Figures 17-6 and 17-7 show the pre-hanging of the fastener of Figure 10 into the same side of the floor of Figure 8, where the fastener of Figure 15 has already been pre-hanged, in the third preferred embodiment of the present invention.

[0141] Figures 17-8 to 17-10 are schematic diagrams of the locking and fixing of adjacent floorboards in Figure 8 together with locking fasteners in Figure 15 and Figure 10 in the third preferred embodiment of the present invention.

[0142] Figure 18 is a schematic diagram of the cross-sectional structure of the locking element in the fourth preferred embodiment of the present invention (without a locking head).

[0143] Figure 19 is a schematic diagram of the cross-section of the floor in the fourth preferred embodiment of the present invention (without the upper groove).

[0144] Figures 20-1 to 20-2 are schematic cross-sectional views of the locking element in the fourth preferred embodiment of the present invention (with a third locking body and an eleventh protrusion but no first locking body).

[0145] Figures 21-1 to 21-5 are installation steps for pre-hanging the floor in Figure 19 by setting the locking fasteners intervals in Figure 20-1 in the fourth preferred embodiment of the present invention.

[0146] Figures 21-6 to 21-7 are schematic diagrams of the pre-installation of the locking fastener of Figure 18 into the same side of the floor of Figure 19, which has already been pre-installed with the locking fastener of Figure 20-1, in the fourth preferred embodiment of the present invention.

[0147] Figures 22-1 to 22-4 are typical installation steps in the fourth preferred embodiment of the present invention, in which the locking fasteners of Figure 18 and Figure 20-1 are used together to lock and fix the adjacent floor of Figure 19.

[0148] Figures 23-1 and 23-2 are schematic diagrams of the arc-shaped side floor splicing of the fifth preferred embodiment of the present invention.

[0149] Figure 23-3 shows the locking component of the fifth preferred embodiment of the present invention (with a seventh protrusion, an infinite locking head, and no eighth protrusion).

[0150] Figures 23-4 show the fifth preferred embodiment of the present invention with a third lock body and a locking fastener (with an eighth protrusion but no seventh protrusion and an infinitely adjustable lock head).

[0151] Figures 23-5 to 23-18 are schematic diagrams of the combination method and typical installation steps of the arc-shaped side floor with the fastener in Figure 23-3 and the fastener with the third lock body in Figure 23-4 according to the fifth preferred embodiment of the present invention.

[0152] Figures 24-1 to 24-7 are schematic diagrams of the steps and methods for installing the floor of Figure 8 onto the joists using a combination of a third lock body fastener (with an extension plate) and the fastener of Figure 10 in the sixth preferred embodiment of the present invention.

[0153] Figures 25-1 to 25-6 are cross-sectional structural diagrams of the seventh preferred embodiment of the present invention, showing the use of a combination of a third locking body fastener (with an extension plate) and the fastener of Figure 10 to lock and fix the floor of Figure 8 as a wall panel on the wall.

[0154] Figures 25-7 are schematic cross-sectional views of the seventh preferred embodiment of the present invention, showing the use of a combination of a third locking body fastener (with an extension plate) and the fastener in Figure 10 to lock and fix the floor in Figure 8 as a stair tread in the stair base.

[0155] Figure 25-8 is a partially enlarged schematic diagram of Figure 25-7 in the seventh preferred embodiment of the present invention.

[0156] Figures 26-1 to 26-9 are diagrams illustrating the disassembly, repair, and replacement methods and installation steps of the floor in Figure 8 and the locking fastener in Figure 10 after installation in the eighth preferred embodiment of the present invention.

[0157] Figures 27-1 to 27-6 are schematic diagrams of the application of the floor in Figure 8 and the fastener in Figure 10 on rectangular and various linear irregular patterns in the ninth preferred embodiment of the present invention.

[0158] Figure 28-1 is a schematic diagram of the cross-sectional structure of the U-shaped rack and pinion fastener in the tenth preferred embodiment of the present invention (with a rack and pinion U-shaped body but no vertical bars).

[0159] Figure 28-2 is a schematic diagram of the cross-sectional structure of the third lock body fastener with a U-shaped rack in the tenth preferred embodiment of the present invention (with a U-shaped body with rack but no vertical bars).

[0160] Figures 28-3 to 29 are schematic diagrams of the cross-sectional structure of the fastening strip in the tenth preferred embodiment of the present invention.

[0161] Figures 28-4 are schematic diagrams of the cross-sectional structure of the elastic clip in the tenth preferred embodiment of the present invention.

[0162] Figures 28-5 to 28-8 are cross-sectional schematic diagrams of typical installation steps of the U-shaped rack and pinion locking component in Figure 28-1, the fastening strip in Figure 28-3, and the elastic clip in Figure 28-4 in the tenth preferred embodiment of the present invention.

[0163] Figure 28-9 is a cross-sectional schematic diagram of the tenth preferred embodiment of the present invention, showing the combination of the U-shaped rack and pinion locking element in Figure 28-1 and the U-shaped rack and pinion third lock body locking element in Figure 28-2, and the locking strip in Figure 28-3 and the elastic clip in Figure 28-4.

[0164] Figures 29-1 to 29-4 are schematic cross-sectional views of the wood-based material composition structure of this invention.

[0165] Figure 30 is a cross-sectional schematic diagram of the locking and fixing of the adjacent floor in Figure 8 and the fastener in Figure 10 of the present invention (with a first weight-reducing groove and a second weight-reducing groove).

[0166] The reference numerals in the attached drawings include: floor 2, first groove 20, lower tenon 22, upper protrusion 21, bottom surface of upper protrusion 211, upper vertical surface 212, bottom surface of first groove 203, bottom side wall of first groove 201, upper surface of lower tenon 221, bottom surface of lower tenon 224, lower vertical surface 222, lower bottom cut portion 230, upper groove 202, lower groove 223, upper inclined surface 213, lower inclined surface 225, fourth protrusion 226, sixth protrusion 2251, third abutment surface 2021, fourth abutment surface 2022, upper surface of upper groove 2023, outer protrusion of upper groove 2024, inner protrusion of upper groove 2025, outer bottom surface of upper protrusion 2112, inner bottom surface of upper protrusion 2113, guide surface of lower groove 2231, outer vertical surface of lower groove 2232, inner surface of lower groove 2235, sloping surface 2233, upper surface of lower groove 2234, inner side of lower groove 2234, locking element 3, first lock body 31, second lock body 32, lever lock bar 33, first tenon 311, first sloping pressure bar 312, limiting lock head 313, vertical bar 321, second sloping pressure bar 322, second base plate 323, second locking bar 324, bottom surface of second sloping pressure bar 3221, bottom surface of first sloping pressure bar 3121, upper surface of first tenon 3111, bottom surface of first tenon 3112, inner side of first tenon 3113, outer side of first tenon 3114, second groove 325, rotating protrusion 314, second protrusion 315, inner vertical surface of second locking bar 3241, upper surface of second locking bar 3242, outer surface of second locking bar 3243, lever lock bar upper surface Surface 331, bottom surface of the paddle lock bar 332, upper guide surface of the paddle lock bar 333, abutting surface of the paddle lock bar 334, lower guide surface of the paddle lock bar 335, third guide surface 336, ninth protrusion 337, tenth protrusion 338, first abutting surface 3131, inner protrusion of the limiting lock head 3135, upper surface of the limiting lock head 3132, third groove 205, first protrusion 206, abutting surface of the third groove 2051, bottom surface of the third groove 2052, inclined surface of the third groove 2053, upper bottom cut surface 207, pre-attached limiting protrusion 2055, upper inclined surface protrusion 2131, elastic adjustment groove 204, bottom side wall of the elastic adjustment groove 2041, inner protrusion of the first groove 2014, upper inclined surface of the elastic adjustment groove 2042, upper inclined surface of the elastic adjustment groove Surface 2043, Upper inclined surface of the first groove 2015, Third inclined surface 227, Upper protruding strip of the third inclined surface 228, Lower protruding strip of the third inclined surface 229, Inner protruding strip of the third groove 2054, Second abutting surface 3133, Limiting lock head groove 3134, Third protruding strip 3115, Seventh protrusion 3211, Eighth protrusion 3212, Outer surface of the seventh protrusion 3213, Lower protruding strip of the seventh protrusion 3215, Lower surface of the seventh protrusion 3217, Upper protruding strip of the eighth protrusion 3214, Outer surface of the eighth protrusion 3216, Inner cavity of the second groove 3251, Bottom inclined surface of the lower tenon 2249, Third lock body 34, Locking fastener with third lock body 3", First base plate 342, First locking strip 343, Inner surface of the first locking strip 3431, Upper inclined surface of the first locking strip 3432.First locking strip upper surface 3433, first locking strip outer surface 3434, lock fastener without lock head 3, sixth abutment surface 351, fifth protruding strip 352, floor without upper groove 2, pre-hanging limiting protruding strip 2055, third groove inner protruding strip 2054, vertical strip first side elevation 3227, vertical strip second side elevation 3228, curved side floor 2, U-shaped body with toothed rack 70, lock fastener with U-shaped toothed rack 3, U-shaped groove 702, toothed protruding strip 701. The lock includes a U-shaped rack and pinion third lock body fastener 3", a paddle lock bar support step 3341, a paddle-less lock bar fastener 3, a snap bar 80, an elastic clip 90, a strip-shaped buckle 801, a lower rack 802, an upper toothed groove 901, a lower toothed protrusion 902, an elastic clip inclined abutment surface 903, an extension plate 3425, an eleventh protrusion 3321, an upper surface of the eleventh protrusion 3323, a first weight-reducing groove 361, and a second weight-reducing groove 362. The best embodiment of the present invention

[0167] The technical solutions of the preferred embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. To clearly illustrate the conceptual process of the present invention, a first preferred embodiment is described first, and a second preferred embodiment is the best embodiment. Obviously, the described preferred embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0168] The locking method of this invention can be a mechanical locking method.

[0169] The vertical (horizontal) locking of the floor described in the preferred embodiment of the present invention refers to locking and fixing the floor with the front of the floor in the vertical direction (the side of the floor in the horizontal direction). Taking adjacent floorboards as an example, it means that the edge parts of two adjacent floorboards can be locked and fixed in the assembled state in both the vertical and horizontal directions.

[0170] Generally, in this article, terms such as "upward" refer to the direction or position facing the front of the floor, while terms such as "downward" refer to the direction or position facing the bottom of the floor.

[0171] First preferred embodiment of the present invention:

[0172] As shown in Figures 2 and 3, Figure 2 is a cross-sectional structural diagram of the floor 2 of the first preferred embodiment of the present invention, and Figure 3 is a three-dimensional structural diagram of the floor 2 in Figure 2. A first groove 20 and a lower tenon 22 are provided on the same side of the floor 2. The upper part of the first groove 20 is provided as an upper protrusion 21, the lower surface of the upper protrusion 21 is provided as the bottom surface 211 of the upper protrusion, the outer end surface of the upper protrusion 21 is provided as the upper vertical surface 212, the lower surface of the first groove 20 is provided as the bottom surface 203 of the first groove, and the inner bottom surface of the first groove 20 is provided as the bottom sidewall 201 of the first groove.

[0173] In the vertical direction, the first groove 20 is above the lower tenon 22. The upper surface of the lower tenon 22 is set as the upper surface 221 of the lower tenon, the lower surface of the lower tenon 22 is set as the bottom surface 224 of the lower tenon, and the outer end face of the lower tenon 22 is set as the lower vertical surface 222. The bottom surface 203 of the first groove overlaps with the upper surface 221 of the lower tenon.

[0174] The lower tenon 22 extends horizontally inward to the upper facade 212, that is, it extends in the direction and / or position toward the center of the floor 2.

[0175] In the vertical direction, there is a bottom cut portion 230 between the bottom surface 224 of the lower tenon and the bottom surface of the floor 2.

[0176] The present invention further includes an upper groove 202 with an opening facing downward on the bottom surface 211 of the upper protrusion, and a lower groove 223 with an opening facing downward on the bottom surface 224 of the lower protrusion.

[0177] The outer edge of the bottom surface 211 of the upper protrusion is connected to the lower edge of the upper vertical surface 212 to form an inclined surface, which is designated as the upper inclined surface 213. The outer edge of the upper surface 221 of the lower protrusion is connected to the upper edge of the lower vertical surface 222 to form an inclined surface, which is designated as the lower inclined surface 225. The upper edge of the lower inclined surface 225 is connected to the outer edge of the upper surface 221 of the lower protrusion to form a protruding strip, which is designated as the fourth protruding strip 226. The lower edge of the lower inclined surface 225 is connected to the upper edge of the lower vertical surface 222 to form a protruding strip, which is designated as the sixth protruding strip 2251.

[0178] The upper groove 202 includes a third abutting surface 2021, a fourth abutting surface 2022, an upper surface 2023 of the upper groove, an outer protrusion 2024 of the upper groove, and an inner protrusion 2025 of the upper groove. The third abutting surface 2021 extends upward and intersects with the upward extension surface of the fourth abutting surface 2022, and the intersection and connection point forms a straight line. The third abutting surface 2021 and the upper surface 2023 of the upper groove are locking surfaces. The upper surface 2023 of the upper groove can be a flat surface or an arc-shaped surface.

[0179] The lower edge of the third abutment surface 2021 is connected to the edge of the bottom surface 211 of the upper protrusion to form a protrusion called the outer protrusion 2024 of the upper groove. The upper edge of the third abutment surface 2021 is connected to one side edge of the upper surface 2023 of the upper groove. The other side edge of the upper surface 2023 of the upper groove is connected to the upper edge of the fourth abutment surface 2022. The lower edge of the fourth abutment surface 2022 is connected to the edge of the bottom surface 211 of the upper protrusion to form a protrusion called the inner protrusion 2025 of the upper groove.

[0180] The bottom surface 211 of the upper convex body between the upper groove 202 and the upper inclined surface 213 is set as the outer bottom surface 2112 of the upper convex body; the bottom surface 211 of the upper convex body between the upper groove 202 and the bottom side wall 201 of the first groove is set as the inner bottom surface 2113 of the upper convex body.

[0181] The lower groove 223 is provided with a lower groove guide surface 2231, lower groove outer surface 2232, lower groove inner inclined surface 2235, lower groove upper surface 2233 and lower groove inner side surface 2234 in a horizontal direction and / or position from the lower vertical surface 222 side towards the first groove bottom sidewall 201.

[0182] The bottom surface 224 of the lower tenon is connected to the lower edge of the outer surface 2232 of the lower groove to form an inclined surface 2231, which is the guide surface 2231 of the lower groove. The upper edge of the outer surface 2232 of the lower groove is connected to one side edge of the upper surface 2233 of the lower groove to form an inclined surface 2235 of the lower groove. The other side edge of the upper surface 2233 of the lower groove is connected to the upper edge of the inner side surface 2234 of the lower groove. The lower edge of the inner side surface 2234 of the lower groove is connected to the inner edge of the bottom surface 224 of the lower tenon and the upper edge of the outer surface 2232 of the lower groove.

[0183] In this invention, as shown in Figures 4 and 5, Figure 4 is a cross-sectional structural diagram of the locking element 3 of the first preferred embodiment of the invention, and Figure 5 is a three-dimensional structural diagram of the locking element 3 in Figure 4. The locking element 3 of the invention is elongated, and the middle part of the locking element 3, as seen from the cross-section shown in Figure 4, is roughly Y-shaped, connecting the first lock body 31, the second lock body 32, and the paddle lock bar 33.

[0184] The first lock body 31 includes a first tenon 311, a first oblique pressure bar 312 and a limiting lock head 313, and the second lock body 32 includes a vertical bar 321, a second oblique pressure bar 322, a second base plate 323 and a second locking bar 324.

[0185] The lower edge of the vertically placed vertical strip 321 is connected to one side edge of the horizontally placed second base plate 323 in an L-shape. The second clip 324 is connected to the upper surface of the other side edge of the second base plate 323. The second inclined pressure strip 322 is placed obliquely. The bottom surface of the second inclined pressure strip 322 is set as the bottom surface 3221 of the second inclined pressure strip. The upper edge of the vertical strip 321 is connected to the lower edge of the second inclined pressure strip 322. With the vertical strip 321 as a reference, the second inclined pressure strip 322 and the second base plate 323 are on the same side in the horizontal direction and / or position.

[0186] The first oblique pressure strip 312 is an obliquely placed strip. The bottom surface of the first oblique pressure strip 312 is designated as the first oblique pressure strip bottom surface 3121. The lower edge of the first oblique pressure strip 312 is connected to the upper edge of the vertical strip 321. The first oblique pressure strip 312 and the second oblique pressure strip 322 are connected together in a slightly V-shape. The first oblique pressure strip 312, the second oblique pressure strip 322 and the vertical strip 321 are connected together in a slightly Y-shape. The upper surface of the first tenon 311 is designated as the first tenon upper surface 3111. The bottom surface of the first tenon 311 is designated as the first tenon bottom surface 3112. One side of the first tenon 311 is designated as the first tenon inner side surface 3113. The side opposite to the first tenon inner side surface is designated as the first tenon outer side surface 3114. The bottom edge of the first tenon inner side surface 3113 is connected to the upper edge of the first oblique pressure strip 312. The first tenon bottom surface 3112 is a locking surface.

[0187] The paddle lock bar 33 is a strip-shaped body placed at an angle. The lower edge of the paddle lock bar 33 is connected to the upper edge of the second oblique pressure bar 322 in a slightly V-shape. The paddle lock bar 33 and the second oblique pressure bar 322 are connected in a slightly V-shape to form an obtuse angle A1. The obtuse angle A1 formed by the paddle lock bar 33 and the second oblique pressure bar 322 in the V-shape faces the side of the first tenon 311.

[0188] The second inclined pressure strip 322, the vertical strip 321, the second base plate 323, and the second clamping strip 324 are connected together to form a groove, which is designated as the second groove 325.

[0189] A convex strip is formed by connecting one side edge of the bottom surface 3112 of the first tenon with the lower side edge of the outer side surface 3114 of the first tenon, which is designated as a rotating convex strip 314. A convex strip is formed by connecting the side edge of the upper surface 3111 of the first tenon with the upper side edge of the inner side surface 3113 of the first tenon, which is designated as a second convex strip 315.

[0190] The second card strip 324 includes a second card strip inner surface 3241, a second card strip upper surface 3242, and a second card strip outer surface 3243 arranged sequentially in the horizontal direction and / or position. The second card strip inner surface 3241 faces the vertical strip 321. The lower edge of the second card strip inner surface 3241 is connected to the upper surface of the second base plate 323. The upper edge of the second card strip inner surface 3241 is connected to one side edge of the second card strip upper surface 3242. The other side edge of the second card strip upper surface 3242 is connected to the upper edge of the second card strip outer surface 3243. The lower edge of the second card strip outer surface 3243 is connected to the edge of the upper surface of the second base plate 323. The second card strip inner surface 3241 is a carding surface.

[0191] The surface of the paddle lock bar 33 facing the first lock body 31 is designated as the upper surface 331 of the paddle lock bar, the other side of the paddle lock bar 33 opposite to the upper surface 331 is designated as the bottom surface 332 of the paddle lock bar, and the surface of the upper edge of the paddle lock bar is designated as the upper guide surface 333 of the paddle lock bar. In the first preferred embodiment of the present invention, the upper guide surface 333 of the paddle lock bar is an arc-shaped surface.

[0192] A slope is formed between the upper surface 331 of the paddle lock bar and the upper edge of the upper guide surface 333 of the paddle lock bar to form a paddle lock bar abutment surface 334. The paddle lock bar abutment surface 334 is a locking surface. A slope is formed between the bottom surface 332 of the paddle lock bar and the lower edge of the upper guide surface 333 of the paddle lock bar to form a paddle lock bar lower guide surface 335.

[0193] The bottom surface 332 of the paddle lock bar is connected to the bottom surface 3221 of the second inclined pressure bar to form an inclined surface, which is designated as the third guide surface 336. The upper edge of the third guide surface 336 is connected to the lower edge of the bottom surface 332 of the paddle lock bar to form a convex bar, which is designated as the ninth convex bar 337. The lower edge of the third guide surface 336 is connected to the bottom surface 3221 of the second inclined pressure bar to form a convex bar, which is designated as the tenth convex bar 338.

[0194] The limiting lock head 313 includes a first abutting surface 3131, a limiting lock head inner protrusion 3135, and a limiting lock head upper surface 3132. The first abutting surface 3131 and the limiting lock head upper surface 3132 are locking surfaces.

[0195] The limiting lock head 313 protrudes from the upper surface 3111 of the first tenon. The outer side 3114 of the first tenon extends upward and intersects with the upward extending surface of the first abutment surface 3131, and the intersection is a straight line. The lower edge of the first abutment surface 3131 is connected to the upper surface 3111 of the first tenon. The upper edge of the first abutment surface 3131 is connected to one side edge of the upper surface 3132 of the limiting lock head to form a protrusion, which is the inner protrusion 3135 of the limiting lock head. The other side of the upper surface 3132 of the limiting lock head extends downward in an arc shape and is connected to the upper edge of the outer side 3114 of the first tenon. In the horizontal direction and / or position, the limiting lock head 313 partially protrudes from the outer side 3114 of the first tenon.

[0196] In this invention, as shown in Figures 6-1 to 6-5, the locking fasteners in Figure 4 are set into the first groove 20 of the floor 2 for pre-hanging before installation, as a typical installation step.

[0197] 1.1.1) As shown in Figure 6-1, first tilt the locking member 3 at a certain angle so that the second protrusion 315 abuts against the bottom surface 2112 of the upper protrusion of the floor 2, and move the first lock body 31 in the direction of arrow A11.

[0198] 1.1.2) As shown in Figure 6-2, the bottom of the rotating protrusion 314 is made to be higher or flush with the upper surface 221 of the lower protrusion in the vertical direction. The first lock body 31 moves along the outer bottom surface 2112 of the upper protrusion towards the bottom side wall 201 of the first groove in the direction of arrow A11, so that the second protrusion 315 enters the upper groove 202 through the outer protrusion 2024 of the upper groove.

[0199] 1.1.3) As shown in Figure 6-3, the rotating protrusion 314 abuts against the upper surface 221 of the lower tenon. Following the direction of arrow A12, the first lock body 31 rotates around the support point S5 where the rotating protrusion 314 abuts against the upper surface 221 of the lower tenon within the first groove 20. It should be further noted that during rotation, the first lock body 31 moves towards the bottom sidewall 201 of the first groove as it rotates along the upper surface 221 of the lower tenon into the first groove 20. Therefore, the support point S5 where the first lock body 31 rotates is not limited to the current water... Since the position point is flat, the "support point S5" can also be extended to the "support area S5"; make the upper end face extension line H1 of the second protrusion 315 exceed the extension line HP1 of the bottom surface 211 of the upper protrusion, and at the same time make the highest point extension line H2 of the inner protrusion 3135 of the limiting lock head 313 not exceed the extension line HP1 of the bottom surface 211 of the upper protrusion, so that the first lock body 31 moves along the upper surface 221 of the lower protrusion in the direction of arrow A11 while gradually rotating the locking buckle 3 in the direction of arrow A12, so that the limiting lock head 313 slides over the inner protrusion 2025 of the upper groove;

[0200] 1.1.4) As shown in Figure 6-4, the inner protrusion 3135 of the limiting lock head abuts against the bottom surface 2113 of the upper protrusion, and the upper surface 331 of the lever lock bar abuts against the upper vertical surface 212. The locking fastener 3 is pre-hung into the floor 2. Two points need to be noted: the locking fastener 3 is pre-set at an angle in the first groove 20 of the floor 2. When the locking fastener 3 is set in the first groove 20 on one side of the floor 2, the locking fastener 3 is not set in the first groove 20 on the opposite side of the floor 2. See the three-dimensional schematic diagram shown in Figure 6-5 for details. The locking fastener 3 is set in the first groove 20 of the two adjacent sides S1 and S2 of the floor 2, while the locking fastener 3 is not set in the first groove 20 of the two adjacent sides S1 and S2 of the floor 2. Sides S3 and S4 opposite to side S2 do not have fasteners 3. Secondly, it should be noted that the purpose of setting one of the upper inclined surfaces 213 at the connection between the bottom surface 211 of the upper convex body and the upper vertical surface 212 is shown in Figure 6-4. When the upper surface 331 of the lever lock bar coincides with the upper vertical surface 212 of the floor 2, in order to increase the connection strength between the lever lock bar 33 and the second inclined pressure bar 322, and to make the thickness of the second inclined pressure bar 322 of the fastener 3 meet the requirement that it will not deform or bend during the locking process, the upper inclined surface 213 is set so that the area where the first triangular block C11 is located becomes part of the second inclined pressure bar 322, so that the fastener 3 is not easily deformed or bent during the locking and fixing process.

[0201] In this invention, the floor shown in Figure 2 also includes a locking element 3 as shown in Figure 4.

[0202] At least one locking element 3 is provided on at least one side edge of the floor 2, while there is no locking element 3 on the opposite side edge of the floor where the locking element 3 is provided. The locking element 3 is inclined and sets the first lock body 31 in the first groove 20 of the floor 2. The inner protrusion 3135 of the locking head of the locking element 3 abuts against the bottom surface 2113 of the upper protrusion, and the upper surface 331 of the lever lock bar abuts against the upper vertical surface 212. The second bottom plate 323 and the second locking bar 324 of the second lock body 32 and the lever lock bar 33 all protrude from the outside of the upper vertical surface 212 of the floor 2.

[0203] In the first preferred embodiment of the present invention, the pre-attached locking fastener 3 is installed in the first groove 20 of the floor 2 without the need for external force to squeeze or forcefully move the locking fastener 3.

[0204] In this invention, Figures 7-1 to 7-18 show typical steps of the installation and locking of the locking member 3 with the pre-hung floor 2a and floor 2b after the locking member 3 is installed into the pre-hung floor 2a. Since this invention allows for installation by relative displacement of the upper surfaces 212a and 212b of floor 2a and floor 2b on the same vertical plane, the first preferred embodiment sets the vertical center plane of VP as the overlapping surface where the upper surfaces 212 of adjacent floor 2a abut against each other. This allows the upper end of floor 2b relative to floor 2a to move downwards along the vertical center plane of VP, further illustrating the typical installation steps of this invention that do not require prior horizontal movement but only vertical relative displacement.

[0205] 1.2.1) As shown in Figure 7-1, the locking member 3 is already set in the first groove 20a on the side of the floor 2a. In the horizontal direction, the second base plate 323 and the second locking strip 324 of the locking member 3 protrude from the outside of the upper surface 212a of the floor 2a, overlapping the upper surface 212b of the floor 2b with the vertical center plane of VP. It should be noted that, as shown in Figure 7-2, when the floor 2b is installed with the floor 2a, if the floor 2b on the side connected to the floor 2a is not facing the other side... When there is a connection with other floor 2, it is not necessary to overlap the upper surface 212b of floor 2b with the vertical center plane of VP for installation. There is a gap C12 between floor 2b and the vertical center line of VP. The installation and locking process of floor 2b and floor 2a is allowed. As shown in Figure 7-3, when the opposite sides of floor 2b are simultaneously locked and fixed with floor 2a and floor 2c, the upper surface 212b of the opposite sides of floor 2b must be overlapped with the vertical center plane of VP on both sides for locking installation.

[0206] The purpose of setting the vertical center plane of VP and showing the center coordinates of the relative displacement of the two adjacent floor 2 in each step of the locking installation process is to enable those skilled in the art to know how to fully implement the vertical installation technique, so that those skilled in the art will not encounter obstacles in subsequent implementation processes, such as replacing and installing a new floor in the middle of the floor 2 or in the development of various irregular products, and thus can develop products with various patterns.

[0207] As shown in Figure 7-1, the purpose of setting an upper inclined surface 213b at the connection between the bottom surface 211b and the upper vertical surface 212b of the upper convex body is to ensure that when the adjacent floor 2b moves downward in the vertical direction, the upper inclined surface 213b of the floor 2b may touch the outer edge of the front of the floor 2a and still be able to move downward smoothly.

[0208] Therefore, when installing floorboards 2b piece by piece, simply hook the lower groove 223b directly onto the second clip 324 of the locking member 3. At this time, the upper surface 2233b of the lower groove abuts against the outer surface 3243 of the second clip 324, and the outer part of the lower tenon 22b falls into the second groove 325.

[0209] As shown in Figure 7-4, it should be noted that, in the vertical direction and / or position, a third guide surface 336 is provided connecting the upper edge of the bottom surface 3221 of the second inclined pressure strip and the lower edge of the bottom surface 332 of the paddle lock strip. The purpose of the ninth protrusion 337 and the tenth protrusion 338 connected to the third guide surface 336 is to ensure that the locking strength of the locking member 3 is not affected by removing the second triangular block C13 with the dotted line from the locking member 3, while prioritizing ensuring that the locking process of the locking member 3 does not deform. This allows the sixth protrusion 2251b to fall below the ninth protrusion 337, preventing the locking member 3 and the floor 2b from being squeezed against each other during the rotation process of the locking member 3 during the locking installation, which would cause the second inclined pressure strip 322 of the locking member 3 to deform and / or the sixth protrusion 2251b of the floor 2b to be squeezed and damaged.

[0210] As shown in Figure 7-4, if the bottom surface 224b of the lower tenon remains unchanged in the vertical direction, and the upper surface 221b of the lower tenon is raised, that is, the vertical thickness of the lower tenon 22b is increased, the sixth protruding strip 2251b abuts against the vertical surface of the second triangular block C13 (dashed line). It is easy to see that even without the second triangular block C13 (dashed line portion), the sixth protruding strip 2251bd (dashed line portion) is still above the ninth protruding strip 337, prioritizing the strength of the locking member 3. If the third guide surface 336 cannot be further adjusted to make the sixth protruding strip 2251bd fall below the ninth protruding strip 337, the angles A2 and A3 formed between the bottom surface 3221 of the second inclined pressure strip and the bottom surface 3121 of the first inclined pressure strip and the vertical strip 321 can be adjusted. In this invention, the side of the floor 2 Since the side is straight, angle A2 is equal to angle A3. Therefore, the angle of angle A2 can be increased accordingly. For example, angle A4 is added to the angle of A2 so that the sixth protrusion 2251b falls below the ninth protrusion 337d (as shown in Figure 7-5). When A2 increases, the angle of angle A1 (as shown in Figure 4) also needs to be adjusted so that the angle of angle A1 also increases appropriately. The purpose is to ensure that the upper surface 331 of the lever lock bar can still coincide with the upper surface 212a of the floor 2a in the pre-hanging state (as shown in Figure 6-4). When A2 increases, the upper inclined surface 213a of the floor 2a also needs to be tilted upward appropriately, as shown in Figure 7-5, which shows the upper inclined surface 213ad with dashed lines. Figure 7-5 shows a partially enlarged cross-sectional schematic diagram of angle A4 and the second triangular block C13.

[0211] 1.2.2) As shown in Figures 7-6, pressing down on the floor 2b causes the upper surface 2233b of the lower groove of the floor 2b to press against the outer surface 3243 of the second locking strip. This causes the first lock body 31 to rotate around the support point S5 of the rotating protrusion 314 against the upper surface 221a of the lower tenon in the direction of arrow A13 within the first groove 20a. It should be further noted that during the rotation, in addition to moving towards the bottom sidewall 201a of the first groove during the pre-engaging process, the first lock body 31 also moves laterally along the upper surface 221a of the lower tenon towards the opening of the first groove 20a. The movement causes the support point S5 that causes the first lock body 31 to rotate to be not limited to the current horizontal position point. Therefore, the "support point S5" can also be extended to the "support area S5". The inner protrusion 315 of the limiting lock head presses upward against the inner bottom surface 2113a of the upper protrusion. Since there is a wedge effect between the upper protrusion 21a and the lower protrusion 22a, the upper protrusion 21a and the lower protrusion 22a can open a certain distance when subjected to external force, forming the dotted line 2113ad at the upper end of the upper protrusion 21a, so that the inner protrusion 3135 of the limiting lock head slides along the inner bottom surface 2113ad of the upper protrusion along the dotted line of the upper protrusion 21a.

[0212] 1.2.3) As shown in Figure 7-7, when the upper surface 3132 of the limiting lock head abuts against the inner protrusion 2025a of the upper groove, and in the vertical direction, the sixth protrusion 2251b is below the tenth protrusion 338, continuing to press the floor 2b, the inner inclined surface 2235b of the lower groove presses against the side edge of the upper surface 3242 of the second locking strip, so that as the first lock body 31 continues to rotate around the support point S5 in the direction of arrow A13, the bottom surface 3121 of the first inclined pressure strip abuts against the fourth protrusion 226a. Due to the restraint of the first inclined pressure strip bottom surface 3121 against the fourth protrusion 226a and the gradual sliding down along the fourth protrusion 226a in the direction of arrow A14, the rotating protrusion 314 moves along the upper surface 221a of the lower protrusion towards the outside of the groove of the first groove 20a. At the same time, on the other side, i.e., the floor 2b side, the floor... The sixth protrusion 2251b of 2b enters the position below the bottom surface 3221 of the second inclined pressure strip through the ninth protrusion 337, the third guide surface 336 and the tenth protrusion 338. When the floor 2b is pressed down, that is, while the first lock body 31 rotates around the bottom support point S5 of the rotating protrusion 314, the second lock body 32 and the paddle lock bar 33 rotate around the second locking bar 324 in the lower groove 223b of the floor 2b, so that the upper guide surface 333 of the paddle lock bar abuts against the outer bottom surface 2112b of the upper protrusion. Since there is a wedge effect between the upper protrusion 21b and the lower tenon 22b, the upper protrusion 21b and the lower tenon 22b can open a certain distance when subjected to external force, so that the upper guide surface 333 of the paddle lock bar moves along the upper bottom surface 2112bd of the upper protrusion of the upper protrusion of the upper protrusion 21b in the direction of the outer protrusion 2024b of the upper groove.

[0213] Technical points: As shown in Figures 7-6 and 7-7, when the limiting lock head 313 lifts the upper groove inner protrusion 2025a, the distance D4 (indicated by the dotted line) between the upper groove inner protrusion 2025a and the upper groove inner protrusion 2025ad in the dotted line portion is set to 0.10mm≤D4≤0.65mm depending on the material used to manufacture the floor 2a, especially based on the different elasticity of the materials of the upper protrusion 21a and the lower tenon 22a. Since the upper groove inner protrusion 2025a is close to the bottom sidewall 201a of the first groove, as shown in Figure 7-7, the distance L between the upper groove inner protrusion 2025a as the elastic force point and the elastic fulcrum 201as of the bottom sidewall 201a of the first groove is... The value of 7 is relatively small, so the opening distance D4 is too large. That is, the larger the opening distance between the upper protrusion 21a and the lower protrusion 22a with the first groove bottom sidewall 201a as the connection point, the greater the elastic force will be generated at the stress point of the protrusion 2025a in the upper groove. This will cause the locking fastener 3 to easily deform when rotating, and it will also easily cause cracks at the connection between the first groove bottom sidewall 201a and the bottom surface 211a of the upper protrusion and / or the upper surface 221a of the lower protrusion. Furthermore, it will make it difficult for the lower protrusion 22a and the upper protrusion 21a to close and return to the state before opening after they are opened. Therefore, it is usually preferred to be 0.10mm≤D4≤0.30mm. As shown in Figures 7-8, it is a partial enlarged cross-sectional schematic diagram of the part with D4 and L7.

[0214] The value of D4 can be adjusted by adjusting the horizontal position of the protrusion 2025a in the upper groove. As shown in Figure 7-13, moving the protrusion 2025a towards the bottom sidewall 201a of the first groove decreases the D4 value, and vice versa. The horizontal position of the protrusion 2025a can be adjusted by moving the horizontal distance between the fourth abutment surface 2022a and the third abutment surface 2021a. With the third abutment surface 2021a stationary and the angle of the fourth abutment surface 2022a unchanged, moving the fourth abutment surface 2022a horizontally towards the bottom sidewall 201a of the first groove (as shown by the dotted line) decreases the D4 value accordingly, and vice versa. Alternatively, it can be adjusted by adjusting the angle A15 between the upper surface 2023a of the upper groove and the fourth abutment surface 2022a. When the angle A15 increases, the D4 value decreases, and vice versa.

[0215] Further explanation is needed. As shown in Figure 7-7, the upper protrusion 21a of the floor 2a protrudes upward to form the protrusion 21as on the dotted line. This dotted protrusion 21as is shown for the convenience of the demonstration in D4. When the locking member 3 rotates within the first groove 20a, due to the wedge effect between the upper protrusion 21a and the lower tenon 22a, the upper protrusion 21a and the lower tenon 22a will open by a certain distance, causing the upper protrusion 21a and the lower tenon 22a to protrude upward and / or downward respectively. Similarly, as shown in the attached figure... As shown in Figure 7-116, the upper protrusion 21b of the floor 2b protrudes upward to form the protrusion 21bs on the dotted line. The dotted protrusion 21bs is shown for the convenience of the demonstration of D7. When the lever lock bar 33 enters the first groove 20b and presses the bottom surface 211b of the upper protrusion, due to the wedge effect between the upper protrusion 21b and the lower protrusion 22b, the upper protrusion 21b and the lower protrusion 22b will open a certain distance, so that the upper protrusion 21b and the lower protrusion 22b protrude upward and / or downward respectively.

[0216] Secondly, as shown in Figures 7-9, the length of L7 can be extended by changing the horizontal depth of the bottom sidewall 201a of the first groove according to the elasticity of different materials used to manufacture the floor 2a. Typically, an elastic adjustment groove 204a is opened horizontally inside the bottom sidewall 201a of the first groove. In essence, the elastic fulcrum 201as of the bottom sidewall 201a of the first groove is extended towards the center of the floor 2a to the bottom sidewall 204as of the elastic adjustment groove, so that the length of L7 is larger and a suitable elasticity can be obtained when the same D4 distance is opened. As shown in Figures 7-9, this ensures that the locking member 3 does not deform during rotation and / or movement, and that the upper protrusion 21a and the lower protrusion 22a can open and close to return to the state before opening. At the same time, it ensures that no cracks occur at the bottom sidewall 204a of the elastic adjustment groove formed on the inner side of the bottom sidewall 201a of the first groove or the bottom sidewall 204a of the elastic adjustment groove.

[0217] 1.2.4) As shown in Figure 7-10, when the limiting lock head 313 slides past the protrusion 2025a in the upper groove, the upper protrusion 21a and the lower protrusion 22a lose the external force, and due to the wedge effect, the upper protrusion 21a and the lower protrusion 22a close and return to the state before opening. The limiting lock head 313 enters the upper groove 202a, and the second protrusion 315 abuts against the third abutting surface 2021a.

[0218] As shown in Figure 7-11, due to the wedge effect between the upper protrusion 21a and the lower protrusion 22a, the upper protrusion 21a and the lower protrusion 22a can open a certain distance when subjected to external force, so that the second protrusion 315 slides along the outer bottom surface 2112ad of the upper protrusion along the dotted line. The opening distance D5 between the outer protrusion 2024a of the upper groove and the outer protrusion 2024ad of the upper groove in the dotted line part is usually set to: 0.15mm≤D5≤0.45mm. Figure 7-12 is an enlarged schematic diagram of the part with D5.

[0219] As shown in Figure 7-13, after the second protrusion 315 slides past the outer protrusion 2024a of the upper groove, the upper protrusion 21a and the lower tenon 22a gradually decrease in size and lose external force. Due to the wedge effect, the upper protrusion 21a and the lower tenon 22a gradually close and return to their pre-open state. The first abutting surface 3131 of the first lock body 31 abuts against the third abutting surface 2021a of the floor 2a, the upper surface 3132 of the limiting lock head abuts against the upper surface 2023a of the upper groove of the floor 2a, the upper surface 3111 of the first tenon abuts against the outer bottom surface 2112a of the upper protrusion, the bottom surface 3112 of the first tenon abuts against the upper surface 221a of the lower tenon, and the bottom surface 3121 of the first inclined pressure strip abuts against the lower inclined surface 225a of the floor 2a. The locking of the first lock body 31 and the floor 2a is completed.

[0220] Technical points: As shown in Figure 7-13, when the first locking body 31 of the locking fastener 3 is locked and fixed to the floor 2a, the greater the horizontal distance L1 between the contact surfaces of the upper surface 3111 of the first protrusion and the outer bottom surface 2112a of the upper protrusion, the more stable the locking and fixing of the first locking body 31 to the floor 2a. That is, when the front of the floor is subjected to pressure, the first locking body 31 is not easy to rotate in the direction of arrow A16. Due to the abutment restriction measures of the first abutment surface 3131 and the third abutment surface 2021a, the bottom surface 3121 of the first inclined pressure strip abuts against the lower inclined surface 225a. By means of the limiting measures and the bottom surface 3112 of the first tenon abutting against the upper surface 221a of the lower tenon, the first lock body 31 is not easy to rotate in the direction of arrow A13. Therefore, when the front of the floor 2a is subjected to pressure, the first lock body 31 of the locking fastener 3 can be stably placed in the first groove 20a. Secondly, the abutting and limiting of the first abutting surface 3131 and the third abutting surface 2021a and the abutting and limiting of the bottom surface 3112 of the first tenon and the upper surface 221a of the lower tenon make the first lock body 31 stable in the first groove 20a and not easy to move out of the groove of the first groove 20a.

[0221] As shown in Figure 7-14, by tilting the inner side surface 3113 of the first tenon at a certain angle relative to the vertical plane, that is, adjusting the angle A7 between the inner side surface 3113 of the first tenon and the upper surface of the first inclined pressure strip 312, the smaller the angle A7, the larger the value of L1. The value of L1a in Figure 7-14 is greater than the value of L1 shown in Figure 7-13. As shown in Figure 7-14, the larger the contact surface L1a between the upper surface 3111 of the first tenon and the outer bottom surface 2112a of the upper tenon, the more stable the first lock body 31 is in the first groove 20a, and the less likely it is to rotate in the direction of A16. When L1a increases relative to L1, the value of D5 shown in Figure 7-11 also increases.

[0222] As shown in Figure 7-15, the numerical range of L1 is also limited by the first groove 20a of the locking element 3, which is pre-set to enter the floor 2a. The rotating convex bar 314 has abutted against the upper edge of the lower inclined surface 225a, and the lever locking bar abutting surface 334 abuts against the upper edge of the upper vertical surface 212a. The second convex bar 315 has passed through the outer convex bar 2024a of the upper groove. The second convex bar 315 can lift the first lock body 31 upward along the third abutting surface 2021a. The locking element is rotated gradually in the direction of arrow A13. 3. And gradually move the first lock body 31 towards the bottom sidewall 201a of the first groove, so that the bottom of the rotating protrusion 314 abuts against the upper surface 221a of the lower protrusion. Referring to steps 1.1.1) to 1.1.4) of this first preferred embodiment, the locking member 3 can be pre-set into the first groove 20a of the floor 2a; when the value of L1a is too large, it is obvious that, as shown by the second protrusion 315d in the dotted line, the first lock body 31 cannot be pre-set into the first groove 20a of the floor 2a;

[0223] Of course, when the value of L1a is too large, the corresponding value of D5 will also increase. An excessively large value of D5 may cause the locking part 3 to deform and rotate and / or may cause cracks at the connection between the bottom sidewall 201a of the first groove and the inner edge of the upper protrusion 21a and / or the inner edge of the lower tenon 22a during use. For example, when using wood to make flooring, the value of L1 is usually set to: 0.6mm≤L1≤1.75mm. Generally, the greater the air-dry density of wood, the greater its strength and the greater its elasticity. It is preferred to be 0.8mm≤L1≤1.65mm, which is basically applicable to wood products with an air-dry density of 0.5 g / cm3 to 1.0 g / cm3 or higher.

[0224] As shown in Figure 7-13, the range of L1 values ​​is also related to the value of the horizontal distance L10 between the vertical extension line of the outer protrusion 2024a of the upper groove and the vertical extension line of the bottom sidewall 201a of the first groove. When it is necessary to increase the value of L1, the value of L10 can be increased appropriately. That is, under the condition that other conditions remain unchanged, by opening the elastic adjustment groove 204a horizontally towards the center position of the floor 2 from the bottom sidewall 201a of the first groove, the bottom sidewall 201a of the first groove is moved horizontally inward towards the center position of the floor 2 to increase the value of L10, and the value of L1 can be increased accordingly.

[0225] As shown in Figure 7-14; in addition, the value of L1 can be increased by appropriately reducing the vertical thickness of the upper protrusion 21a, that is, by reducing the value of the vertical distance V0 between the horizontal extension line of the bottom surface 211a of the upper protrusion and the horizontal extension line of the front surface of the floor 2a. Preferably, the value of V0 is not less than 3mm.

[0226] Overall, the value of L1 cannot exceed the maximum limit that prevents the first lock body 31 from being pre-engaged into the first groove 20. This maximum limit is mainly related to five parameters:

[0227] As shown in Figure 7-14, the first parameter is related to the width of the first groove 20a in the vertical direction, that is, it is related to the value of the vertical distance V1 between the horizontal extension line of the bottom surface 211a of the upper protrusion and the horizontal extension line of the upper surface 221a of the lower tenon. The larger V1 is, the larger the value of L1 can be.

[0228] The second parameter is related to the acute angle A8 of the third abutment surface 2021a relative to the horizontal plane, as shown in Figure 7-14. The larger the angle A8 is, the larger the value of L1 becomes. Figure 7-18 is a partially enlarged schematic diagram of angles A7 and A8 in Figure 7-14.

[0229] The third parameter is related to the value of the horizontal distance L8 between the vertical extension line of the upper groove protrusion 2024a and the vertical extension line of the upper facade 212a. The larger the value of L8, the smaller the range of L1 that can be set, as shown in Figure 7-15. When the upper groove protrusion 2024as is set to be near the outside of the groove opening in the horizontal direction, the dotted part 315d can enter the upper groove 202a through the upper groove protrusion 2024as. Assuming there is no upper groove protrusion 2024as, the dotted part 315d cannot enter the upper groove 202a through the upper groove protrusion 2024a.

[0230] The fourth parameter is related to the horizontal distance L11 between the vertical extension line of the fourth protrusion 226a and the vertical extension line of the upper surface 212a (as shown in Figure 2). The larger the value of L11, the larger the range of L1 values ​​can be set. As shown in Figure 7-15, when the angle of the lower slope 225a remains unchanged, the lower slope 225as (dashed line part) can be moved horizontally inward towards the center of the floor 2 to increase the value of L11. The 315d in the dashed line part can enter the upper groove 202a through the outer protrusion 2024a of the upper groove.

[0231] The fifth parameter is related to the acute angle A9 of the lower slope 225a relative to the horizontal plane, as shown in Figure 2. The larger the angle A9 is, the larger the range of L1 values ​​can be set.

[0232] It should be noted that, through testing and analysis, to ensure a secure locking and fixing of the locking fastener 3 to the floor 2, the value of L8 should be greater than the value of L11. The first preferred embodiment discloses a set of experimental data as follows: when V0 equals 4.5mm, V1 equals 3.5mm, A8 equals 41º, L8 equals 3.31mm, L11 equals 2.48mm, and A9 equals 34.1º, L1 has a maximum value of 1.1mm. When L1 equals 1.1mm, the air-dry density is between 0.5 g / cm³ and 1.0 g / cm³. When the L10 value of flooring 2 made of wood materials with a g / cm3 or higher is 3.5mm-10.2mm, since the hardness of each type of wood is only one factor affecting its elasticity, and there are also differences in the application of cross-grain wood, some data may be too small or too large. Furthermore, flooring 2 made of wood veneer laminates, three-layer flooring 2 with cross-grain wood, multi-layer wood flooring 2, and flooring 2 made of MDF (medium-density fiberboard) and HDF (high-density fiberboard) wood materials will be further explained later. Flooring 2 made of other materials with different properties can be optimized by those skilled in the art according to the methods described and the published parameter data.

[0233] As shown in Figures 7-1 to 7-11, when the floor 2b is pressed down, in the vertical direction and / or position, the sixth protrusion 2251b of the floor 2b always moves below the ninth protrusion 337, the third guide surface 336, the tenth protrusion 338, and the bottom surface 3221 of the second inclined pressure strip.

[0234] As can be seen from Figures 7-1 to 7-11, during the installation process, the upper surface 212a of floor 2a and the upper surface 212b of floor 2b always coincide with the vertical center plane VP.

[0235] 1.2.5) As shown in Figure 7-16, when the guide surface 333 on the paddle lock bar abuts against the outer bottom surface 2112b of the upper protrusion 21b on the floor 2b, the upper protrusion 21b and the lower tenon 22b open due to the wedge effect. The distance D7 between the outer bottom surface 2112b of the upper protrusion 21b and the outer protrusion 2024b of the upper groove on the dotted line when the upper protrusion 21b opens is set to: 0.15mm≤D7≤0.95mm, preferably 0.30mm≤D7≤0.65mm. After the guide surface 333 on the paddle lock bar slides past the highest point of the upper protrusion 2112b, due to the wedge effect between the upper protrusion 21b and the lower tenon 22b, the upper protrusion 21b and the lower tenon 22b open. As the external force gradually disappears between the lower tenons 22b, the upper protrusion 21b and the lower tenon 22b gradually close due to the wedge effect, returning to their pre-open state, as shown in Figure 7-13. The abutment surface 334 of the lever lock bar abuts against the third abutment surface 2021b, the bottom surface 3221 of the second inclined pressure bar abuts against the lower inclined surface 225b of the floor 2b, the bottom surface 224b of the lower tenon abuts against the upper surface of the second base plate 323, and the inner vertical surface 3241 of the second locking strip abuts against the outer vertical surface 2232b of the lower groove of the floor 2b. The second lock body 32 and the lever lock bar 33 are locked and fixed with the lower tenon 22b and the first groove 20b of the floor 2b, respectively.

[0236] Technical points: In this invention, the structures of all sides of floor 2a and floor 2b that cooperate with the first lock body 31, the second lock body 32 and the paddle lock bar 33 of the locking fastener 3 are the same. Therefore, when designing the relevant structure and parameter ratios in the first groove 20a of floor 2a, the locking and fixing with the first lock body 31 is given priority. Then, the structure and parameter ratios of the paddle lock bar 33 of floor 2b are considered to adapt to the locking and fixing with floor 2b. Accordingly, the value of D7 can be changed by lengthening or shortening the length of the paddle lock bar 33, that is, by changing the length D2 between the connection between the second inclined pressure bar 322 and the paddle lock bar 33 and the guide surface 333 on the paddle lock bar. As shown in Figure 7-16, when the value of D2 increases, the value of D7 also increases, and vice versa. Figure 7-17 is an enlarged schematic diagram with D7.

[0237] As shown in Figure 7-13, due to the abutment and restraint measures between the abutment surface 334 of the paddle lock bar and the third abutment surface 2021b, the second lock body 32 and the paddle lock bar 33 are not easy to rotate in the direction of arrow A16; due to the multiple abutment and restraint measures of the bottom surface 3221 of the second inclined pressure bar abutting against the lower inclined surface 225b of the floor 2b, the bottom surface 224b of the lower tenon abutting against the upper surface of the second base plate 323, and the inner vertical surface 3241 of the second locking bar abutting against the outer vertical surface 2232b of the lower groove, the paddle lock bar 33 and the second lock body 32 are not easy to rotate in the direction of arrow A13. Therefore, the paddle lock bar 33 and the second lock body 32 can be stably fixed on the first groove 20b and the lower tenon 22b of the floor 2b and are not easy to rotate.

[0238] As shown in Figures 7-13, the purpose of setting the inner inclined surface 2235b of the lower groove is to prevent the outer inclined surface 2232b of the lower groove from being subjected to excessive external force from the inner inclined surface 3241 of the second clip (direction of arrow A18) when the locking member 3 rotates in the direction of arrow A13, causing the outer inclined surface 2232b of the lower groove to crack at the intersection S6 (shown in dashed line) with the upper surface 2233b of the lower groove. The inner inclined surface 2235b of the lower groove can be a plane or a concave arc surface, and in this first preferred embodiment it is a plane.

[0239] Second preferred embodiment of the present invention:

[0240] The second preferred embodiment of the present invention is the best embodiment of the present invention, as shown in Figures 8 and 9. Figure 8 is a cross-sectional structural diagram of the floor 2 of the second preferred embodiment of the present invention, and Figure 9 is a three-dimensional structural diagram of the floor 2. The floor 2 shown in Figure 8 has a third groove 205 formed on the bottom surface 211 of the upper convex body of the floor 2 shown in Figure 2 of the first embodiment. The third groove 205 is a groove with an opening that is obliquely directed toward the opening of the first groove 20. In the horizontal direction and / or position, the third groove 205 is disposed between the upper groove 202 and the bottom sidewall 201 of the first groove. The upper groove 202 includes the third groove 205.

[0241] The third groove 205 includes a third groove abutment surface 2051, a third groove bottom surface 2052, and a third groove inclined surface 2053.

[0242] The third groove abutting surface 2051 forms an acute angle A5 relative to the horizontal plane. The angle A5 is set as follows: 0º≤A5≤11º, preferably 2.5º≤A5≤10.5º.

[0243] The upper groove 202 also includes an upper bottom cut surface 207 and a first protrusion 206.

[0244] The lower edge of the fourth abutment surface 2022 and the lower edge of the third groove abutment surface 2051 are connected to form a plane called the upper bottom cut surface 207. The lower edge of the third groove abutment surface 2051 and one side edge of the upper bottom cut surface 207 are connected to form a protrusion called the pre-hanging limiting protrusion 2055. The other side edge of the upper bottom cut surface 207 and the lower edge of the fourth abutment surface 2022 are connected to form a protrusion called the first protrusion 206. The inclined surface 2053 of the third groove and the edge of the bottom surface 211 of the upper convex body are connected to form a protrusion called the inner protrusion 2054 of the third groove. The fourth abutment surface 2022 is a locking surface.

[0245] The upper bottom tangent 207 forms an acute angle A6 relative to the horizontal plane. The included angle A6 is set to 0º≤A6≤7.2º, and preferably the included angle A6 is equal to 0º.

[0246] A raised strip is formed between the upper vertical surface 212 and the upper inclined surface 213 of the floor 2, which is the raised strip 2131 on the upper inclined surface.

[0247] Figure 12 shows a partially enlarged schematic diagram of angles A5 and A6.

[0248] As shown in Figures 10 and 11, in the second preferred embodiment of the present invention, Figure 10 is a cross-sectional structural schematic diagram of the locking member 3 of the second preferred embodiment of the present invention, and Figure 11 is a three-dimensional structural schematic diagram of the locking member 3 of Figure 10. The locking member 3 shown in Figure 10 is formed by setting the limiting lock head 313 of the locking member 3 shown in Figure 3 of the first embodiment on the upper surface 3111 of the first tenon between the outer side 3114 and the inner side 3113 of the first tenon, and the limiting lock head protrudes from the upper surface 3111 of the first tenon.

[0249] The limiting lock head 313 also includes a second abutment surface 3133, which is a locking surface. In the horizontal direction, the second abutment surface 3133 and the outer side surface 3114 of the first tenon face the same direction.

[0250] The upper edge of the second abutment surface 3133 is connected to one side edge of the upper surface 3132 of the limiting lock head. The lower edge of the second abutment surface 3133 is recessed into the limiting lock head 313 and connects with the upper edge of the outer side surface 3114 of the first tenon to form an arc-shaped groove called the limiting lock head groove 3134. The second abutment surface 3133 extends upward and intersects with the upward extension surface of the first abutment surface 3131, and the intersection is a straight line.

[0251] The first lock body 31 also includes a third protrusion 3115, where the lower edge of the first abutting surface 3131 is connected to the upper edge of the inner side surface 3113 of the first tenon to form a protrusion, which is the third protrusion 3115.

[0252] The vertical strip 321 has a first side facade 3227 and a second side facade 3228 on its two opposite sides. The first side facade 3227 faces the second strip 324. A seventh protrusion 3211 is provided on the upper side of the first side facade 3227. An eighth protrusion 3212 is provided on the second side facade 3228.

[0253] The seventh protrusion 3211 is provided with at least a seventh protrusion outer surface 3213, a seventh protrusion lower protrusion 3215 and a seventh protrusion lower surface 3217 in the vertical direction from top to bottom, and the eighth protrusion 3212 is provided with at least an eighth protrusion upper protrusion 3214 and an eighth protrusion outer surface 3216 in the vertical direction from top to bottom.

[0254] In this invention, as shown in Figures 13-1 to 13-6, the locking member 3 shown in Figure 10 is installed into the first groove 20 of the floor 2 shown in Figure 8 to perform a typical pre-hanging installation step:

[0255] 2.1.1) As shown in Figure 13-1, the locking fastener 3 is tilted at a certain angle so that the third protrusion 3115 of the first lock body 31 abuts against the outer bottom surface 2112 of the upper protrusion of the floor 2. The first lock body 31 moves along the outer bottom surface 2112 of the upper protrusion towards the bottom side wall 201 of the first groove in the direction of arrow A11.

[0256] Alternatively, as shown in Figure 13-2, the locking element 3 is tilted at a certain angle so that the rotating protrusion 314 abuts against the lower inclined surface 225, and the rotating protrusion 314 is moved upward along the lower inclined surface 225 into the upper groove 202.

[0257] 2.1.2) As shown in Figure 13-3, the third protrusion 3115 of the locking member 3 moves horizontally and / or in position and passes through the boundary of the outer protrusion 2024 of the upper groove, and then lifts the locking member 3 upward along the third abutment surface 2021, so that the bottom end face of the rotating protrusion 314 is higher than the upper surface 221 of the lower tenon in the vertical direction, and further moves the locking member 3 in the direction of arrow A11, so that the bottom end face of the rotating protrusion 314 abuts against the upper surface 221 of the lower tenon;

[0258] 2.1.3) As shown in Figures 13-4, the first lock body 31 of the latch 3 rotates in the first groove 20 in the direction of arrow A12 around the support point S5 of the rotating protrusion 314 abutting against the upper surface 221 of the lower protrusion. It should be further noted that during the rotation, the first lock body 31 will move along the upper surface 221 of the lower protrusion towards the inner side wall 201 of the bottom of the first groove or towards the outer side of the groove opening of the first groove 20, so that the support point S5 where the first lock body 31 rotates is not limited. At the current horizontal position, "support point S5" can also be extended to "support area S5"; rotate repeatedly in the direction of arrow A12 and gradually move the locking member 3 in the direction of arrow A11 during the rotation. The purpose of the rotation is to make the highest point of the limiting lock head 313 below the upper bottom sectional surface 207, so that the first lock body 31 can be translated to the side of the bottom wall 201 of the first groove, so that the limiting lock head 313 passes through the upper bottom sectional surface 207 and enters the third groove 205;

[0259] Technical points: As shown in Figure 13-4, although the upper surface 331 of the lever lock bar does not completely overlap with the upper facade 212, the existing combination state of the locking fastener 3 and the floor 2 as shown in Figure 13-4 does not affect the locking and fixing of the adjacent floor 2. This is beneficial because the locking fastener 3 is pre-installed in the factory on at least one long side of the floor 2. Since the third groove abutment surface 2051 is a slope, the locking fastener 3 can only be moved to the outside of the groove of the first groove 20 by rotating in the opposite direction of arrow A12. This is beneficial because the factory can pre-install the first lock body 31 of the locking fastener 3 into the first groove 20 of the floor 2. During packaging, transportation and final on-site installation, it is not necessary to adjust the locking fastener 3 one by one to make the upper surface 331 of the lever lock bar completely overlap with the upper facade 212, thus improving production efficiency and installation efficiency.

[0260] 2.1.4) As shown in Figures 13-5, the locking member 3 is further moved in the direction of arrow A11 so that the locking member 3 moves along the upper surface 221 of the lower tenon. The upper surface 331 of the lever lock bar abuts against the upper vertical surface 212 of the floor 2, the first abutting surface 3131 abuts against the third groove abutting surface 2051, and the rotating protrusion 314 abuts against the upper surface 221 of the lower tenon. The locking member 3 is in the optimal pre-hanging state with the floor 2.

[0261] As shown in Figure 8, the floor 2 also includes the fastener 3 shown in Figure 10;

[0262] As shown in Figure 10, the locking element 3 is inclined and the first lock body 31 is set in the first groove 20 on at least one side of the floor 2 shown in Figure 8. On the opposite side of the floor 2 where the locking element 3 has been pre-attached, there is no locking element 3. In the second preferred embodiment of the present invention, the locking element 3 is set in the first groove 20 of the floor 2 without the need for forceful squeezing or forceful movement of the positioning locking element 3.

[0263] Technical points: As shown in Figures 13-5, the third groove abutment surface 2051 is preferably an inclined surface. After the locking member 3 is pre-attached to the floor 2, it can restrict the locking member 3 from moving towards the groove of the first groove 20 without external force or rotation of the locking member 3 in the opposite direction of arrow A12. When the locking member 3 and the floor 2 are in the best pre-attached state, the first abutment surface 3131 abuts against the third groove abutment surface 2051. Therefore, as shown in Figure 8, the value of the acute angle A5 of the third groove abutment surface 2051 relative to the horizontal plane is preferably 2.5º≤A5≤10.5º. For example, in this second preferred embodiment, A5 is equal to 6.9º.

[0264] As shown in Figure 12, the acute angle A6 between the upper bottom cut surface 207 and the horizontal plane is preferably equal to 0º. Since some enterprises still use non-CNC grooving equipment, when debugging the grooving tool, that is, when actually debugging the tool shaft of the grooving tool for machining the upper groove 202, it is necessary to determine whether the depth of the upper groove 202 relative to the bottom surface 211 of the upper convex body meets the design requirements of the drawing. Usually, it can be analyzed and judged by projection, but the actual efficiency is low and it affects the debugging efficiency. Therefore, the upper bottom cut surface 207 can be parallel to the front of the floor 2, that is, the acute angle A6 between the upper bottom cut surface 207 and the horizontal plane is equal to 0º. Usually, the horizontal length of the upper bottom cut surface 207 can reach about 1mm. Therefore, the value of the depth of the upper groove 202 relative to the bottom surface 211 of the upper convex body can be determined by measuring with the external measuring jaw of the vernier caliper, so that the measurement data is accurate and the measurement process is simple and quick. As shown in Figure 13-6, the two jaws C22 and C23 of the external measuring jaw of the vernier caliper abut against the front of the floor 2 and the upper bottom cut surface 207, respectively.

[0265] In this invention, Figures 14-1 to 14-18 show typical installation steps for locking and fixing the fastener 3 shown in Figure 10 to the floor 2a and floor 2b shown in Figure 8. In the second preferred embodiment of this invention, the vertical center plane of VP is set as the overlapping surface of the upper surfaces of adjacent floorboards, with relative displacement along the vertical center plane of VP. The specific typical installation steps are as follows:

[0266] 2.2.1) As shown in Figure 14-1, the first lock body 31 of the fastener 3 is pre-hung into the first groove 20a of the floor 2a according to steps 2.1.1) to 2.1.4) in the second preferred embodiment. At this time, the second bottom plate 323 and the second locking strip 324 of the fastener 3 protrude from the outer side of the upper surface 212a of the floor 2a. The lower groove 223b of the floor 2b is hung on the second locking strip 324 of the fastener 3, and the upper surface 2233b of the lower groove of the floor 2b abuts against the outer surface 3243 of the second locking strip.

[0267] Technical point 1: A second groove cavity 3251 is reserved below the lower surface 3217 of the seventh protrusion. That is, the second groove cavity 3251 is set in the space of the projection area of ​​the lower surface 3217 of the seventh protrusion onto the upper surface of the second base plate 323. The projection direction is perpendicular to the upper surface of the second base plate 323. The purpose of setting the second groove cavity 3251 is to allow the lower tenon 22b to enter the second groove 325 of the locking member 3 vertically when the locking member 3 is in the state shown in Figure 14-1, so that the lower vertical surface 222b will not abut against the outer vertical surface 3213 of the seventh protrusion, and the lower groove 223b of the floor 2b can be hooked onto the second clip 324. The second groove 325 includes the second groove cavity 3251.

[0268] Technical Point Two: As shown in Figure 14-1, the horizontal width L3 at the opening of the groove 223a can be set to the following value: In this second embodiment, L3 ≥ 1.2mm, preferably 2.5mm ≤ L3 ≤ 5.5mm. The purpose is that when installing and locking adjacent floor 2b, as shown in Figure 13-5, the optimal state of the pre-attached fastener 3 and floor 2 is to lock and fix the adjacent floor 2b. The situation where the fastener 3 and floor 2 are pre-attached as shown in Figure 13-4 is also permissible for locking and fixing the adjacent floor 2b. This will result in different states of pre-attached fastener 3 on the same side of the floor 2 where the fastener 3 is pre-attached, for each second clip 3. 24 is not at the same distance from the upper surface 212 of the floor 2. That is, multiple second clips 324 on the same side of the same floor 2 are not necessarily in a straight line. Therefore, widening the horizontal groove width L3 of the lower groove 223 is beneficial to ensure that the lower groove 223b can be hooked into all the second clips 324 of the pre-hung fasteners 3 on the side of the adjacent floor 2 when the floor 2b is vertically displaced, which is beneficial to improving installation efficiency. Secondly, for extra-long strip floor 2, such as floor 2 with a length of more than 1800mm, the lower groove 223 of the floor 2 can be hooked into the second clips 324 of the pre-hung fasteners 3 on the adjacent floor 3 quickly, accurately and without error.

[0269] Technical Point 3: As shown in Figure 14-1, the vertical distance V3 between the upper surface 331 and the bottom surface 332 of the paddle lock strip is preferably less than or equal to the horizontal distance L4 between the vertical extension lines of the upper and lower surfaces 212a and 222a of the floor 2a. The purpose is, as shown in Figure 14-11, that when the locking member 3a and the locking member 3c are pre-hung on the floor 2a and floor 2c respectively, and floor 2b is installed between floor 2a and floor 2c, when V3 ≤ L4, the lower surfaces 222b on both sides of floor 2b can be hooked into the second clip 324a and the second clip 324c through the paddle lock strips 33a and 33c of the locking member 3a pre-hung on floor 2a and the locking member 3c pre-hung on floor 2c respectively.

[0270] Technical Point 4: Since the thickness V3 of the latching strip 33 of the locking member 3 affects whether it will deform during rotation within the first groove 20, it should be noted that, given that the locking member 3 and other subsequent matching locking members must be fitted to the actual edge thickness of the floor 2 (i.e., the vertical distance from the front to the bottom of the floor) is usually less than 20mm (and in many cases even less than 8mm), the cross-section of the locking member 3 can only be a small size. Therefore, as shown in Figures 14-13, the available space for some components of the locking member 3, such as the vertical strip 321, the second base plate 323, the first diagonal pressure strip 312, and the second diagonal pressure strip 322, is usually only on the order of about 0.8mm or less. When maintaining the rigidity of the locking element 3 within such a small size, especially given the relatively long total length of the paddle lock bar 33 and the connected second inclined pressure bar 322, the smaller-sized paddle lock bar abutment surface 334 or guide surface 333 on the paddle lock bar is prone to deformation when subjected to force. The feasibility of implementing this in a conventional manner by handling different thicknesses is also limited. To prevent the paddle lock bar 33 and the second inclined pressure bar 322 of the locking element 3 from easily deforming, efforts are made to maintain, for example, the paddle lock bar of the locking element 3 when manufactured from aluminum alloy. The thickness V3 of the second inclined bar 322 and the minimum thickness V4 of the second inclined bar 322 are generally not less than 0.8 mm, as shown in Figures 14-13. That is, the vertical distance V3 between the upper surface 331 and the bottom surface 332 of the lever lock bar is preferably not less than 0.8 mm, and the minimum vertical distance V4 between the bottom surface 3221 and the upper surface of the second inclined bar 322 is generally not less than 0.8 mm. Preferably, the values ​​of V3 and V4 are 0.85 mm to 2.5 mm. In this second preferred embodiment, the locking element 3 is made of aluminum alloy material, V3 is equal to 1.28 mm, and the minimum part of V4 is equal to 1.34 mm.

[0271] Therefore, when the vertical thickness of the edge of the floor 2 is small, V3 may be greater than L4. To prevent the floor 2b from vertically entering the second groove 325 of the locking member 3 as shown in Figure 14-12, the bottom surface 224b of the lower tenon abuts against the guide surface 333 on the lever lock bar. Therefore, as shown in Figure 14-14, a slope is formed by connecting the outer edge of the bottom surface 224b of the lower tenon with the lower edge of the lower vertical surface 222b, which is the bottom slope surface 2249b of the lower tenon. Furthermore, the upper edge of the bottom surface 332 of the lever lock bar connects with the lower edge of the guide surface 333 on the lever lock bar. The side edge connection forms an inclined surface 335, which is the lower guide surface 335 of the lever lock bar. As shown in Figure 14-14, the bottom inclined surface 2249b of the lower tenon of the floor 2b slides over the upper guide surface 333 of the lever lock bar. The lower side edge of the lower vertical surface 222b of the lower tenon 22b abuts against and presses the lower guide surface 335 of the lever lock bar. Since the floor 2 is suspended, the two adjacent floor 2a will move slightly in the direction of arrow A20 when the floor 2b falls vertically, so that the lower vertical surface 222b of the floor 2b can press and slide over the bottom surface 332 of the lever lock bar and enter the second groove 325.

[0272] 2.2.2) As shown in Figure 14-2, pressing down on the floor 2b causes the upper surface 2233b of the lower groove of the floor 2b to abut against the outer surface 3243 of the second locking strip, causing the first lock body 31 to rotate in the first groove 20a in the direction of arrow A13 around the support point S5 of the rotating protrusion 314 and the upper surface 221a of the lower tenon. It should be further noted that during the rotation, the first lock body 31 will move along the upper surface 221a of the lower tenon towards the groove opening of the first groove 20a, so that the support point S5 where the first lock body 31 rotates is not limited to the current horizontal position. Therefore, "support point S5" can also be extended to "support area S5"; at the same time, the lever... The locking bar 33 and the second lock body 32 rotate around the second locking bar 324 in the lower groove 223b in the direction of arrow A13. The inner protrusion 3135 of the limiting lock head presses upward against the third groove abutment surface 2051a. Due to the wedge effect between the upper protrusion 21a and the lower protrusion 22a, when the upper protrusion 21a and the lower protrusion 22a are subjected to external force, they can open a certain distance, so that the limiting lock head 313 slides along the dotted line of the opening of the upper protrusion 21a and abuts against the upper bottom cut surface 207ad, as shown in Figure 14-3. The floor 2b is pressed down further, so that the limiting lock head 313 continues to move along the upper dotted line of the upper end of the upper protrusion 21a to the direction of the first protrusion 206ad.

[0273] Technical points: As shown in Figure 14-3, due to the wedge effect between the upper protrusion 21a and the lower protrusion 22a of the floor 2a, under the action of external force, when the first lock body 31 rotates in the first groove 20a, the bottom of the rotating protrusion 314 of the first lock body 31 is supported on the upper surface 221a of the lower protrusion. When the first lock body 31 rotates, the limiting lock head 313 presses upward on the third groove abutment surface 2051ad. Therefore, it is possible to ensure that the limiting lock head 313 is accurately embedded in the upper groove 202a during the rotation of the first lock body 31 in the first groove 20a, and to ensure that the first protrusion 206ad is not damaged and the bottom side of the first groove is not damaged. The wall 201a will not crack. Simultaneously, it is crucial to ensure that, due to the wedge-shaped effect between the upper protrusion 21a and the lower tenon 22a, they can close and return to their pre-open state when external force is lost. This is one of the key technical solutions of this invention. As shown in Figures 14-3, under normal circumstances, one of the important factors enabling the first lock body 31 to rotate within the first groove 20a and for the limiting lock head 313 to embed in the upper groove 202a is whether the elastic force between the upper protrusion 21a and the lower tenon 22a is appropriate. There are three main factors affecting the elastic force between the upper protrusion 21a and the lower tenon 22a, as follows:

[0274] The first aspect is as shown in Figure 14-3. During the rotation of the first lock body 31, the inner protrusion 3135 of its limiting lock head abuts against the upper bottom cut surface 207a. At this time, the point where the inner protrusion 3135 of the limiting lock head abuts against the upper bottom cut surface 207ad (as shown by the upper dotted line) is C8. The vertical distance D1 between the horizontal extension line of point C8 and the horizontal extension line of the upper bottom cut surface 207a is also greater. The larger the value of D1, the greater the opening distance between the upper protrusion 21a and the lower tenon 22a. The greater the elastic force between the upper protrusion 21a and the lower tenon 22a, the greater the elastic force between the upper protrusion 21a and the lower tenon 22a of the floor 2a can be adjusted by adjusting the vertical distance V5 between the horizontal extension line of the upper bottom cut surface 207 and the horizontal extension line of the upper surface 2023 of the upper groove. In essence, the elastic force between the upper protrusion 21a and the lower tenon 22a can be obtained by adjusting the value of V5 to adjust the value of D1.

[0275] Secondly, due to the different materials of flooring 2, especially the different air-dry densities of wood, the higher the air-dry density of wood, the greater its hardness. Generally, the greater the hardness of wood, the greater its elasticity and the less prone it is to deformation. Therefore, the hardness of wood is one of the important factors affecting the elasticity of wood, that is, affecting the elastic force between the upper protrusion 21a and the lower tenon 22a of flooring 2a. Furthermore, as shown in Figure 7-14, the elastic force between the upper protrusion 21a and the lower tenon 22a is related to the vertical thickness V0 of the upper protrusion 21a and the vertical thickness V2 of the lower tenon 22a. Analysis of the overall side structure of floor 2 reveals that, due to the relatively fixed vertical thickness V2 of the lower tenon 22 (i.e., V2 is limited by the structure of the second locking body 32 of the locking member 3), the vertical distance V2 between the horizontal extension line of the upper surface 221 of the lower tenon and the horizontal extension line of the bottom surface 224 of the lower tenon is usually greater than V0. This structure is due to the structure of the locking member 3 fixing the V2 value of V1. The vertical distance from the front to the bottom surface of floor 2a is not always the same on the side of floor 2a; therefore, it is usually adjusted by changing V0 and the lower cut portion 230. The thickness V7 value is used to accommodate the vertical distance from the front to the bottom of the floor 2a. The minimum V7 value must be greater than or equal to the vertical distance of the second base plate 323 of the locking element 3. Therefore, the V0 value is usually adjusted to accommodate the vertical distance from the front to the bottom of the floor 2a. This structural design often results in a V2 value greater than the V0 value, preferably with a V0 value not less than 3mm. It should also be noted that in another situation, setting a V0 value greater than V1 is possible and necessary, for example, when using a multi-layered wood substrate. By adding a thinner layer of wood material to the floor 2, or by using a three-layer wood floor 2, within the range of the total thickness of the floor, i.e. the vertical distance from the front surface of the floor to the bottom surface of the floor, the value of V0 can be made greater than the value of V2 by adjusting the thickness V7 of the bottom cut part 230 and / or the value of V1 of the vertical distance between the horizontal extension line of the bottom surface 211 of the upper protrusion and the horizontal extension line of the upper surface 221 of the lower tenon. In this way, the values ​​and shapes of the first lock body 31, the second lock body 32 and the lever lock bar 33 of the locking components can be adjusted to adapt to the floor 2, which will be further described later.

[0276] As shown in Figures 14-13, the third aspect is to appropriately extend the horizontal distance L12 between the first protrusion 206 and the bottom sidewall 201 of the first groove. That is, by opening an elastic adjustment groove 204 (shown in Figures 7-9) horizontally towards the center of the floor 2 on one side of the bottom sidewall 201 of the first groove, the appropriate elastic force between the upper protrusion 21a and the lower tenon 22a when they are opened to the same D1 value can be obtained by adjusting the value of L12 for floor 2 made of materials with different air-dry densities (under normal circumstances).

[0277] Combining the main factors from the first to the third aspects, as shown in Figures 14-13, it can be seen that the larger the value of V5, the more stable the first lock body 31 is within the first groove 20. Therefore, in actual operation, it is very important to prioritize the value of V5. Generally, V5 should be satisfied first, followed by V0, and then L12. This design sequence not only ensures the locking and fixing firmness of the latch 3 and the floor 2, but also makes production feasible. This is because the value of V5 is related to the tool used to machine the groove 202. Different V5 values ​​result in different tools for machining the groove 202, which increases tool costs and the time required to change the tool shaft. However, L12 does not... Similarly, because under normal circumstances, if the tool shaft of the tool for machining the first groove 20 in the horizontal direction is at least one on one side, even if it is a four-axis four-sided planer as commonly referred to in the art, the cost is extremely low as long as saw blades of different diameters are clamped between the tools, and no other production costs are increased. If there are two tools on one side that can machine the first groove 20 in the horizontal direction, only one tool shaft needs to be used to install a tool or saw blade that opens the elastic adjustment groove 204. Different depths of elastic adjustment grooves 204 can be obtained by simply adjusting the tool shaft progress, without increasing production costs, and the debugging is simple and quick; adjusting the V0 value is very simple, without changing the tool, and the adjustment is simple and quick.

[0278] The second preferred embodiment discloses a set of experimental data: the floor edge thickness is 15mm, V0 value is 4.5mm, V1 value is 3.5mm, V2 value is 5.7mm, the vertical distance V7 of the bottom cut portion 230 is 1.3mm, as shown in Figures 7-14, angle A8 in the first preferred embodiment can be equal to 41º, while in the second embodiment, angle A8 is equal to 35º, L8 is equal to 2.91mm, L11 is equal to 2.48mm, where L8 is greater than L11, angle A9 is equal to 34.1º, and in the second preferred embodiment, V5 value is set to 0.45mm; through experiments, the range of V5 value setting is: 0.25mm≤V5≤1.25mm, which is generally applicable to air-dry densities of... Wood with a density of 0.5 g / cm³-1.0 g / cm³, preferably 0.35 mm ≤ V5 ≤ 0.75 mm. Since the hardness of each type of wood is only one factor affecting its elasticity, and it also varies with the application of cross-grain patterns, some data may be too small or too large. Furthermore, flooring 2 made of wood veneer laminates, three-layer flooring 2 with cross-grain patterns, multi-layer wood flooring 2, and flooring 2 made of MDF (medium-density fiberboard) and HDF (high-density fiberboard) wood materials will be further explained later. Flooring 2 made of other materials with different properties can be optimized by those skilled in the art according to the methods described and the published parameter data.

[0279] 2.2.3) As shown in Figure 14-3, during the rotation and / or movement of the first lock body 31, the eighth protrusion 3212 abuts against the protrusion 228a on the third inclined surface, the third inclined surface 227a, the lower protrusion 229a on the third inclined surface, and the lower vertical surface 222a in succession. The eighth protrusion 3212 slides downward along the protrusion 228a on the third inclined surface, the third inclined surface 227a, the lower protrusion 229a on the third inclined surface, and the lower vertical surface 222a, respectively. This causes the first lock body 31 to move along the upper surface 221a of the lower tenon towards the groove of the first groove 20a during the rotation, so that the limiting lock head 313 is embedded in the upper groove 202a, as shown in Figure 14-4.

[0280] Technical points: Because the locking member 3 is provided with an eighth protrusion 3212, during the rotation of the locking member 3, when the eighth protrusion 3212 directly abuts against the lower edge of the lower inclined surface 225a and / or the sixth protrusion 2251a, the locking member 3 moves too far towards the floor 2b, causing the floor 2b to move away from the vertical center plane of VP; as shown in Figure 14-2, it can be seen that the connection between the lower vertical surface 222a and the upper inclined surface 225a has a common intersection with the upper edge of the eighth protrusion 3212 and / or the upper protrusion 3214 of the eighth protrusion. The fourth triangular block S8 (with a dashed line roughly triangular) is shown in Figure 14-5. A partially enlarged schematic diagram of block S8 shows that the fourth triangular block S8 is removed by setting a third inclined surface 227a, so that the upper surface 212a of floor 2a can remain on the same plane as the vertical center plane of VP. At the same time, it is also to ensure that floor 2b remains on the same plane as the vertical center line of VP when it moves downward. As shown in Figures 14-2 to 14-4, this is because a third inclined surface 227a is set at the connection between the lower surface 222a and the lower inclined surface 225a, and the third inclined surface 227b of floor 2b falls below the ninth protrusion 337, the third guide surface 336, the tenth protrusion 338 and the second inclined pressure strip 322 in sequence.

[0281] 2.2.4) As shown in Figure 14-4, when the upper protrusion 21a and the lower protrusion 22a are no longer subjected to external force, they close and return to their state before opening. The bottom surface 3112 of the first protrusion abuts against the upper surface 221a of the lower protrusion, the first abutting surface 3131 abuts against the third abutting surface 2021a, the second abutting surface 3133 abuts against the fourth abutting surface 2022a, the upper surface 3132 of the limiting lock head is on the upper surface 2023a of the upper groove, the bottom surface 3121 of the first inclined pressure strip abuts against the lower inclined surface 225a, and the first lock body 31 and the floor 2a are locked together.

[0282] Technical points: As shown in Figure 14-4, due to the restriction measures provided on the outer side of the limiting lock head 313, the second abutting surface 3133 abuts against the fourth abutting surface 2022a of the floor 2a, which restricts the rotation of the first lock body 31 in the first groove 20 in the direction of arrow A16. Furthermore, the limiting lock head 313 is positioned on the upper surface 3111 of the first tenon between the outer side 3114 and the inner side 3113 of the first tenon. As shown by the dotted lines in Figure 14-4, the abutting point C1 between the second abutting surface 3133 and the fourth abutting surface 2022a, and the abutting point C2 between the upper surface 3132 of the limiting lock head and the upper surface 2023a of the upper groove, are the first abutting surface 31. The first lock body 31 abuts against the third abutting surface 2021a at point C3, the first inclined pressure strip bottom surface 3121 abuts against the lower inclined surface 225a at point C4, and the two ends of the first tenon bottom surface 3112 abut against the two ends of the lower tenon upper surface 221a at points C5 and C6 respectively. It is not difficult to see from Figure 14-4 that the downward projection of the line connecting C1, C2 and C3 falls within the line connecting C5 and C6, and also within the line connecting C4 and C6. Obviously, if pressure is applied only to the upper end of the line connecting C1, C2 and C3, the first lock body 31 will not flip over, thus further restricting the rotation of the first lock body 31 within the first groove 20a. Figure 14-6 shows a partially enlarged schematic diagram of the joint between C1 and C6.

[0283] 2.2.5) As shown in Figure 14-2, on one side of the floor 2b, while pressing down on the floor 2b, the guide surface 333 on the lever lock bar abuts against the outer bottom surface 2112b of the upper convex part of the floor 2b. The third inclined upper convex strip 228b is below the ninth convex strip 337. As the floor 2b continues to be pressed down, the third inclined upper convex strip 228b is always below the ninth convex strip 337, the tenth convex strip 338, and the second inclined pressure strip 322. Due to the wedge effect between the upper convex body 21b and the lower tenon 22b of the floor 2b, the upper convex body 21b and the lower tenon 22b can open a certain distance under the action of external force, so that the guide surface 333 on the lever lock bar is along the dotted line of the opened upper convex body 21b on the outer bottom surface 2112bd of the convex part. Move towards the bottom sidewall 201b of the first groove, so that the guide surface 333 on the paddle lock bar slides over the boundary of the outer protrusion 2024b of the upper groove, so that the abutment surface 334 of the paddle lock bar enters the upper groove 202b. As shown in Figure 14-4, the upper protrusion 21b and the lower protrusion 22b close and return to the state before opening when the external force is removed, so that the abutment surface 334 of the paddle lock bar abuts against the third abutment surface 2021b, the inner vertical surface 3241 of the second locking bar abuts against the outer vertical surface 2232b of the lower groove, the bottom surface 3221 of the second inclined pressure bar abuts against the lower inclined surface 225b, and the bottom surface 224b of the lower protrusion 224b abuts against the upper surface of the second base plate 323, so that the second lock body 32 and the paddle lock bar 33 are locked and fixed with the floor 2b.

[0284] Technical points; further explanation of the present invention: referring to the numerical description of D7 shown in Figures 7-16 of the first preferred embodiment (1.2.6), 0.15mm≤D7≤0.95mm, preferably 0.30mm≤D7≤0.65mm; as shown in Figures 14-4, while prioritizing the locking strength between the locking member 3 and the floor 2, and taking into account the cost of the locking member 3, the horizontal distance L5 between the vertical extension line of the outer surface 2232a of the lower groove and the vertical extension line of the lower surface 222a is equal to the horizontal distance L6 between the vertical extension line of the inner surface 3241 of the second card strip and the vertical extension line of the outer surface 3213 of the seventh protrusion. Further analysis of the relationship between the D7 and L5 values ​​is crucial. As shown in Figure 14-4, under otherwise unchanged conditions, in the horizontal direction, three sets of L5-sized lower groove outer surfaces 2232L51, 2232L52, and 2232L53 are set, corresponding to the simulated running trajectories of the guide surface 333 and the outer bottom surface 2112b of the upper convex body. The three coordinate points of the D7 value formed by the three parabolic dashed lines are L51, L52, and L53. As shown in Figure 14-4, the three dashed lines intersect with the guide surface 333 on the paddle lock bar. The vertical distance V6 between the horizontal extension line of the uppermost surface of the guide surface 333 and the horizontal extension line of the bottom surface 211b of the upper protrusion is set. When the value of V6 remains constant, the larger the value of L5, the smaller the value of D7. In other words, the D7 value should be kept constant. When it is necessary to increase the value of L5 to improve the locking strength between the floor 2 and the locking element 3, the value of V6 should be increased accordingly. That is, the length D2 between the guide surface 333 on the extended paddle lock bar and the connection between the paddle lock bar 333 and the second inclined pressure bar 322 is shown in Figures 14-16; in order to enable those skilled in the art to implement the technical solution of the present invention without further experimentation, the value of L5 in the preferred embodiment of the present invention is set as follows: 2.2mm≤L5≤6.5mm, preferably 3.0mm≤L5≤4.5mm; Figures 14-7 are partially enlarged schematic diagrams with L51, L52, L53 and D7.

[0285] The D7 value is often a crucial basis for practical calculations and analyses. This invention demonstrates a D7 value method to enable those skilled in the art to master the analytical method. The L5 and D2 values ​​can be adjusted according to actual needs to meet practical requirements. To enable those skilled in the art to implement the technical solution of this invention without further experimentation, this invention discloses, through experimentation, that when L5 equals 3.1mm or 4.0mm, the vertical direction V6 between the highest point of the latch bar 33 and the outer bottom surface 2112 of the upper convex bar is set to 0.45mm ≤ V6 ≤ 0.76mm or 0.6mm respectively. 0mm≤V6≤1.05mm, as shown in Figure 14-4. Since the value of V6 directly determines the value of D7, the value of V6 can be adjusted by adjusting the combination tool used to process the first groove 20. The skill of adjusting the combination tool used to process the first groove 20 is a basic skill for those skilled in the art, and will not be described here in this embodiment of the invention. In addition, the value of D7 is also related to the value of V0 and L12 in the structure of the floor 2, as well as the hardness of each type of wood used to manufacture the floor 2, and also differs from the application of the cross-grain pattern. Therefore, the value of V6 may be too small or too large.

[0286] It should be noted that, since the locking element 3 in this invention is not elastic, during the process of locking and fixing adjacent floorboards 2 with the locking element 3, the upper protrusion 21 and the lower tenon 22 of the floorboard 2 have elastic and tough characteristics, so that the wedge effect between the upper protrusion 21 and the lower tenon 22 is applied. Therefore, it is applicable not only to floorboards 2 made of single-layer wood, such as the floorboard 2 shown in Figure 29-1, where the surface layer 411 of the single-layer wood floor is a paint or wood wax oil layer; the elasticity and toughness of such single-layer wood flooring are mainly related to the hardness of the wood material, i.e., the air-dry density.

[0287] Floor 2 is formed by gluing a layer of wood top layer 421 onto the surface of a substrate 420 composed of multiple layers of thin wood laminated with glue, as shown in Figure 29-2. The wood top layer 421 is made of high-quality wood with a thickness of 0.5mm-6mm. The wood top layer 421 can be used as a decorative layer. The fiber orientation of the wood fibers in the wood top layer 421 can be substantially parallel to their long edge portions. The elasticity and toughness of the floor 2 made of this material are related to the thickness of its top layer material and / or the hardness of the substrate to which the top layer is bonded.

[0288] As shown in Figure 29-3, the floor 2 is composed of three layers of wood material, including a wood core strip 432 arranged in the middle, a wood top layer 431, and a wood bottom balancing layer 430; the wood top layer 421 is made of high-quality wood, the wood top layer 431 can be used as a decorative layer, and the wood bottom balancing layer 430 can be made of cheaper wood, wherein the fiber orientation of the wood fibers in the wood top layer 431 can be substantially parallel to their respective long edge portions;

[0289] As shown in Figures 29-4, the core board 442 is made of MDF (medium-density fiberboard) or HDF (high-density fiberboard), and its top layer 441 is based on one or more resin impregnated layers (such as printed decorative layers and so-called protective layers) and a balancing layer 440 that also includes one or more resin impregnated layers. The whole is bonded and reinforced under heat and pressure to form the floor 2. The elasticity and toughness of the floor 2 made of this material are related to the hardness of the core board.

[0290] Figures 29-1 to 29-4 show flooring 2 made primarily of wood materials. Those skilled in the art can optimize it using the methods described above and the published parameter data.

[0291] In addition to wood materials, such as those mentioned above including or selected as high-density fiberboard, medium-density fiberboard, particleboard or plywood, and single-layer wood flooring 2, the interlayer material can also be replaced by, for example, a polymer-based core containing thermoplastic or thermosetting materials, wherein the thermoplastic material may contain polyvinyl chloride plastic, preferably a non-wood material such as a mineral-based filler. The formulation can be adjusted to make it have elasticity and toughness similar to wood materials, and can be further optimized with reference to the above methods and published parameter data.

[0292] Therefore, various aspects of several preferred embodiments disclosed herein are described primarily with reference to these embodiments. However, as will be readily understood by those skilled in the art, other embodiments besides the disclosed preferred embodiments are equally possible within the scope of the disclosure.

[0293] As shown in Figures 14-8 to 14-10, the front of the floor 2 forms a 90° angle with the upper surface 212. This is commonly referred to in the art as a chamferless floor. When adjacent chamferless floorboards 2 are assembled together, the gap at the joint is usually not visible to the naked eye. Therefore, during the installation of this type of floor 2, since the edge of the front of the chamferless floorboard 2 must not be damaged, the angle A1 at the connection between the upper surface of the second inclined pressure strip 322 and the upper surface 331 of the lever lock strip can be slightly increased, as shown in Figure 14-8. This ensures that when the chamferless floorboard 2 is lowered, its upper surface 212b is perpendicular to the upper surface 212 of the floor 2a at the VP vertical line. On the outside of 12a, when floor 2b moves downward, the inclined surface 2249b of the protruding tenon of floor 2b will not touch the front edge of floor 2a, and the upper surfaces 222a and 222b of floor 2a and floor 2b will not collide or rub against each other in the initial stage of installation. As shown in Figure 14-9 during the installation process, the upper surfaces 212a and 212b of floor 2a and floor 2b both protrude upward, so the outer edges of the front of floor 2a and floor 2b will not touch each other, thus making it less likely to damage the right-angle edges of adjacent floor 2a and floor 2b. Figure 14-10 is a schematic diagram of floor 2a and floor 2b being locked and fixed with the locking member 3.

[0294] To enable those skilled in the art to implement the technical solution of this invention without further experimentation, the A1 value shown in Figure 14-8 is 153 º, while the A1 value shown in Figure 14-1 is 149.7 º. It can be seen that by slightly increasing the A1 angle, the adjacent floor 2 and the locking fastener 3 can still lock the adjacent floor 2 without horizontally moving the floor 2 to be installed, and only by maintaining vertical downward displacement. Furthermore, the upper surfaces 212 on both sides of the adjacent floor 2 will not touch each other during installation, thus preventing damage to the outer edge of the front of the chamferless floor 2.

[0295] It should be noted that the specific data disclosed in all embodiments of the present invention are intended to enable those skilled in the art to implement the technical solution of the present invention without further experimentation. The disclosed specific data does not limit the scope of protection of the present invention to the specific data protection scope. For example, the angle A1 and the shape deformation treatment of the locking member 3, etc. When the value of the vertical distance V1 between the horizontal extension line of the upper surface 221 of the locking member 3 and the horizontal extension line of the bottom surface 211 of the upper protrusion changes, the structure of the locking member 3 will also change accordingly, as shown in Figures 14-15. When V1 changes, the angle A1 of the locking member 3 and, for example, the limiting lock head 313 and the limiting... The shape of the upper groove 202 that mates with the locking head 313 changes accordingly, but the locking principle and locking process remain unchanged. All technical features of the first lock body 31, such as the first abutting surface 3131, the second abutting surface 3133, and the upper surface 3132 of the limiting lock head, abut against the third abutting surface 2021b, the fourth abutting surface 2022b of the upper groove 202b of the floor 2b, and the upper surface 2023b of the upper groove, respectively. The upper surface 3132 of the limiting lock head is an inclined surface, and the corresponding upper surface 2023b of the upper groove is also an inclined surface. However, the upper surface 3132 of the limiting lock head shown in Figure 10 is a plane, while the upper surface 2023 of the upper groove shown in Figure 8 is a plane; as shown in Figures 14-15. When V1 is 4.5mm and A1 is 147.9º, the upper surfaces 212 of adjacent floorboards 2a and 2b coincide with the vertical plane of VP, which is the same as the installation method shown in Figures 14-1 to 14-4. When V1 is 3.5mm as shown in Figure 14-1, A1 is 149.7º. In the second preferred embodiment of the present invention, V1 in Figure 14-1 is equal to 3.5mm. As shown in Figure 8, the acute angle A5 between the third groove abutment surface 2051 and the horizontal plane is preferably 2.5º≤A5≤10.5º. For example, in the second preferred embodiment, angle A5 is equal to 6.9º. In Figure 14-15, when V1 is 4.5, the angle A5 in the present invention is 8.5º. Of course, this data change is also related to other values. In the second preferred embodiment of the present invention, the locking member 3 shown in Figure 14-1 is preferably applicable to 14 Floor 2 with a thickness of 14mm-17.5mm, that is, the vertical distance from the front surface of floor 2 to the bottom surface of floor 2 is between 14mm and 17.5mm; the locking member 3 shown in Figures 14-15 of the second preferred embodiment is preferably suitable for floor with a thickness of 16.5mm-22mm.

[0296] It is particularly important to note that since the locking element 3 does not need to have elastic properties, it can usually be made of metal materials, such as aluminum alloy. Therefore, the vertical thickness of the first locking body 31 can be reduced without affecting the strength of the locking element 3. Thus, the vertical width V1 of the first groove 20 of the floor is reduced accordingly. That is, the vertical distance V1 between the horizontal extension line of the upper surface 221 of the lower tenon and the horizontal extension line of the bottom surface 211 of the upper protrusion can still maintain the required locking strength between the floor 2 and the locking element 3. As shown in Figures 14-19, when V1=2.5mm, the locking element 3 undergoes a deformation relative to the locking element 3 shown in Figure 10. As shown in Figures 14-19, the first locking body 31 of the locking element 3 is pre-hung in the first groove 20 of the floor 2. When the V1 value of the floor 2 can be set to V1≤2.5mm, the locking element 3 can adapt to a smaller vertical thickness on the side of the floor 2. Figure 14-20 shows a cross-sectional view of the connection and fixation of adjacent floor 2a and floor 2b with the locking element 3.

[0297] Of course, even when the vertical thickness of the side of the floor 2 is large enough, for example, when the vertical distance from the front to the bottom of the floor 2 is 18mm, the locking member 3 shown in Figure 14-19 is still the best choice. This makes the V0 value significantly greater than the V2 value. In particular, in order to prevent the upper protrusion 21 from protruding upwards or to make it only slightly protrude when the locking member 3 rotates in the first groove 20, as shown in Figure 14-21, a protruding strip 3116 is formed at the connection between the outer side 3114 of the first tenon and the upper plane 2111 of the first tenon. Therefore, when the locking member 3 is in the pre-hanging state on the floor 2, the bottom side wall 201 of the first groove abuts against or approaches the protruding strip 3116 of the first tenon. 16. As shown in Figures 14-20, the horizontal distance between the vertical extension line of the bottom sidewall 201 of the first groove and the vertical extension line of the upper surface 212 is set to L15. In the preferred embodiment of the present invention, V1 is 2.5mm and L15 is ≥7.3mm. Preferably, L15 is equal to 7.3mm. Furthermore, an elastic adjustment groove 204 is formed on one side of the bottom sidewall 201 of the first groove towards the center of the floor 2. The horizontal distance between the vertical extension line of the bottom inner wall of the elastic adjustment groove 204 and the vertical extension line of the upper surface 212 is set to L16. Generally, the value of L16 is set in the range of 7.5mm≤L16≤20mm; preferably 8.5mm≤L16≤15mm.

[0298] The vertical distance in the vertical direction of the elastic adjustment groove 204 is further set, that is, the vertical distance V17 between the horizontal extension line of the lower surface of the elastic adjustment groove 204 and the horizontal extension line of the upper surface of the elastic adjustment groove 204 is set. The value range of V17 is usually set to: 1.1mm≤V17≤2.5mm. For example, in the preferred embodiment of the present invention, V17 is equal to 1.6mm.

[0299] Furthermore, the lower surface of the elastic adjustment groove 204 is made to coincide with the upper surface 221 of the lower protrusion. This structural design makes the vertical distance V18 between the horizontal extension line of the front of the floor and the horizontal extension line of the upper surface of the elastic adjustment groove 204 larger. The advantage of this structural design is that when the locking member 3 rotates in the first groove 20, the upper protrusion 21 is kept from bulging upward or only slightly bulging, so that the front surfaces of adjacent floorboards 2 can remain basically flush during installation and when the front surfaces of the floorboards 2 are subjected to load.

[0300] To further maintain the strength of the connection within the first groove 20 of the floor 2, as shown in Figures 14-21, the upper surface of the elastic adjustment groove 204 is connected to the bottom sidewall 201 of the first groove to form a protrusion 2014 within the first groove. Furthermore, the bottom sidewall 201 of the first groove at the upper end of the protrusion 2014 is connected to the protrusion 2054 within the third groove to form an inclined surface 2015 within the first groove. This structural design makes the upper protrusion 21 more rigid, meaning that even after a slight protrusion, the upper protrusion 21 can... When the external force is lost, the upper protrusion 21 returns to its pre-protrusion state. Furthermore, the bottom sidewall 2041 of the elastic adjustment groove is set to form the upper inclined surface 2042 and the lower inclined surface 2043 of the elastic adjustment groove with the upper surface and the lower surface of the elastic adjustment groove 204, respectively. The purpose of this structural design is to prevent the connection between the bottom sidewall 2041 of the elastic adjustment groove and the upper surface and / or the lower surface of the elastic adjustment groove 204 when the upper protrusion 21 and the lower protrusion 22 are opened.

[0301] Furthermore, if the thickness V0 of the upper protrusion 21 is prioritized to be as large as possible, and the vertical thickness of the upper protrusion 21 is further increased by setting the V18 value, this structural design ensures that the front surfaces of adjacent floorboards 2 remain basically flush during installation and use. To prevent the upper protrusion 21 and lower tenon 22 from breaking when the locking member 3 rotates within the first groove 20 of the floorboard 2 due to the wedge effect, the horizontal width L3 at the opening of the lower groove 223a can be appropriately extended. As shown in Figure 14-1, L3 ≥ 1.2 mm, preferably 2.5 mm ≤ L3 ≤ 5.5 mm. In the optimal embodiment of this invention... In the example, it is preferred that 5.5mm≤L3≤15mm. The purpose of this structural design is to set the vertical distance V19 between the horizontal extension line of the upper surface 2233 of the lower groove and the horizontal extension line of the upper surface 221 of the lower tenon. As shown in Figure 14-21, it can be seen that the value of V19 is less than the value of V2, which makes it easier for the lower tenon 22 to protrude downward under the same force and the same opening distance D1 (as shown in Figure 14-3) and / or D7 (as shown in Figure 14-4). Further increasing the value of L3 makes it even easier for the lower tenon 22 to protrude downward under the same force and the same opening distance D5. Therefore, it is not easy for the lower tenon 22 to break or break when it protrudes downward.

[0302] As shown in Figures 14-21, since V1≤2.5mm, the locking and fixing of the floor 2 and the fastener 3 is more stable. It is not only applicable to the size of the floor 2 with a vertical thickness of less than 14mm and greater than 12mm, but also applicable to the size of the floor 2 with a vertical thickness of greater than or equal to 14mm.

[0303] Furthermore, due to the change in the V1 value of the floor 2, and to further enhance the stability of the protrusion 21 on the floor, the locking member 3 is deformed accordingly to cooperate with the floor 2 as shown in Figures 14-19. As shown in Figures 14-20, the abutment surface 334 of the lever lock bar 33 of the locking member 3 is connected to the upper surface 331 of the lever lock bar to form a step that is concave inward toward the bottom surface 332 of the lever lock bar, which is set as the lever lock bar support step 3341, and is supported by the lever lock bar. The upward-sloping surface connected to the step 3341 serves as the abutment surface 334 for the lever lock bar. The advantage of the lever lock bar support step 3341 is obvious: when the vertical thickness of the upper protrusion 21b of the floor 2b is relatively thin, the lever lock bar support step 3341 can support the bottom surface 211a of the upper protrusion when the front of the floor 2b is under load, thus preventing deformation of the upper protrusion 21a. The upper surface 3111 of the first tenon of the locking member 3 extends outward and protrudes from the outer side 3114 of the first tenon. Furthermore, the upper surface 3111 of the first protruding tenon extending outward is a slope, and the connection between the upper surface 3111 of the first protruding tenon and the outer side 3114 of the first protruding tenon is higher than the connection between the upper surface 3111 of the first protruding tenon and the limiting lock head 313. The purpose of this design is to enable the third groove abutment surface 2051a of the upper groove 202a of the floor 2a to abut against the upper surface 3111 of the first protruding tenon, thereby further improving the connection stability between the floor 2a and the floor 2a. Therefore, by reducing the size of the locking member 3 by a certain proportion and appropriately adjusting the angle of A1, the locking member 3 can be applied to thinner floor 2, such as floor 2 with a thickness of less than 8mm, and can also be applied to floor 2 with a larger vertical thickness value on the side as shown in Figures 14-21. Therefore, the deformation of some technical features of the locking member 3 and the floor 2 due to application to different sizes of floor 2 is still within the protection scope of the claims of this invention.

[0304] It should be further explained that, as shown in Figures 14-15, the shape of the limiting lock head 313 of the locking member 3 is a variation of the limiting lock head 313 shown in Figure 10. A first weight-reducing groove 361 in the shape of a horn is provided on the outer side 3114 of the first protrusion; a second weight-reducing groove 362 is provided on the upper side of the connection between the inner side 3133 of the first protrusion and the first inclined pressure strip 312. The first weight-reducing groove 361 and the second weight-reducing groove 362 are provided in the same manner and position in the locking member 3 of Figure 10. The locking member in Figures 14-16 is a variation of the locking member 3 of Figure 10 after the first weight-reducing groove 361 and the second weight-reducing groove 362 are provided. Its purpose is to make the locking member 3 lighter and reduce the cost of the locking member 3 without affecting the function and strength of the locking member 3.

[0305] 2.2.6) As shown in Figure 14-4, when the first lock body 31 is locked and fixed to the floor 2a, and the second lock body 32 and the paddle lock bar 33 are locked and fixed to the floor 2b, the seventh convex outer surface 3213 and the eighth convex outer surface 3216 respectively abut against the lower surface 222b of the adjacent floor 2b and the lower surface 222a of the floor 2a.

[0306] Technical points: Further limiting the rotation of the locking element 3 within the first groove 20 of the adjacent floor 2 is the key to solving the vertical locking strength of the adjacent floor 2 surface. As shown in Figure 14-4, the outer surface 3213 of the seventh protrusion and the outer surface 3216 of the eighth protrusion abut against the lower surface 222b of the adjacent floor 2b and the lower surface 222a of the floor 2a, respectively. Normally, when the floor 2b is slightly higher than the floor 2a, when the front of the floor 2a is subjected to pressure, an external force will be generated that causes the locking element 3 to rotate in the direction of arrow A16. However, as shown in Figure 14-4, the protrusion 3214 on the eighth protrusion... The distance D6 between the lower edge and the upper edge of the seventh convex strip 3215 is greater than the vertical distance L13 between the outer facade 3216 of the eighth convex strip and the outer facade 3213 of the seventh convex strip (as shown in Figure 10). When the horizontal vertical distance L9 between the lower facades 222 on both sides of the adjacent floor 2 is equal to the value of L13, as shown in Figure 14-4, there are mutual abutment and restriction measures between the outer facades 3213 and 3216 of the seventh convex strip 3 and the lower facades 222 on both sides of the adjacent floor 2, making it difficult for the fastener 3 to rotate between the adjacent floor 2.

[0307] Therefore, as shown in Figures 14-17, the floor 2 in Figures 14-17 has a total of 7 rows, from row 71 to row 77. Along the long side of the floor 2, there are 73 locking fasteners 3 and one long locking fastener 3L. Along the short side of the floor 2, there are 12 locking fasteners 3. The length of the locking fastener 3L does not exceed the length L2 between the bottom sidewalls 2g2 of the first groove at both ends of the floor 2g2 connected to the locking fastener 3L, as shown in Figures 14-16 and 14-17. Preferably, multiple locking fasteners 3 with lengths of 15mm-300mm are spaced apart on the floor 2, as shown in Figures 14-17. Typically, 3-6 locking fasteners 3 with lengths of 30mm-60mm are provided on the side of the floor 2 with a length of 600mm, and 1-2 locking fasteners 3 with lengths of 30mm-60mm are provided on the short side.

[0308] As shown in Figures 14-17, floor 2c2 is positioned near the center relative to the other floor 2s. Figures 14-17 show that floor 2c2 has locking fasteners 3 on all four sides for secure locking. In the second preferred embodiment, compared to the first preferred embodiment, the locking fasteners 3 are more stably locked to the floor 2 under pressure. This is mainly because the second preferred embodiment has made corresponding and significant improvements to the limiting lock head 313 and the upper groove 202 of the floor 2, allowing the locking fasteners 3 to lock more stably to the sides of the floor 2. Another improvement is the seventh protrusion outer facade 3213 and the eighth protrusion outer facade... The facade 3216 abuts against the lower facade 222 on both sides of the adjacent floor 2, further restricting the rotation of the locking element 3; when the front of the floor 2c2 is subjected to pressure, the locking element 3 may be subjected to external forces that cause rotation (e.g., the ground flatness exceeds the Chinese national standard GB / T20238-2018, which provides detailed regulations on the installation, acceptance and use of suspended wood flooring. Article 6 of this standard: Requirements for the installation and final acceptance of suspended flooring. This clause requires that the ground flatness be checked with a 2m straightedge, and the maximum chord height between the straightedge and the ground should be ≤3mm). For details, refer to other provisions in section 6.2.2 of the national standard GB / T20238-2018, which stipulates that the seventh convex outer facade 3213 and the eighth convex outer facade 3216 respectively press against the lower facades 222 on both sides of the floor 2 adjacent to the floor 2c2. However, since the floor 2c2 is in a relatively central position, the floor 2c2 is horizontally locked and fixed to the adjacent floor 2 by multiple locking fasteners 3. Furthermore, for example, the floor 2b1, floor 2b2, and floor 2b3 adjacent to the floor 2c2 are connected to the floor 2a1, floor 2a2, and floor 2a3 respectively. This connection effect makes the floor 2c2 located in the middle position... The three rows (73 rows) of floor 2c2 will not move or separate from the adjacent floor 2b1, floor 2b2 and floor 2b3 in the horizontal direction. Therefore, even if the locking member 3 of floor 2c2 rotates under the action of external force, it will be restricted by the seventh convex outer facade 3213 and the eighth convex outer facade 3216 pressing against the lower facade 222 on both sides of the floor 2 adjacent to floor 2c2. This prevents the locking member from rotating in the first groove 20c2 of floor 2c2. Therefore, floor 2c2 and the surrounding floor 2 can undulate as a whole, further reducing the height difference phenomenon of adjacent floor 2 when the ground is not flat enough.

[0309] However, due to the process requirement of leaving expansion joints between floor 2 and tiles or between floor 2 and walls, the floor 2a adjacent to the tile or skirting board wall of the adjacent floor 2 may experience rotation of the locking element 3 when the front of floor 2a or floor 2b is subjected to pressure due to factors such as insufficient flatness of the ground. This could cause the seventh convex outer facade 3213 and the eighth convex outer facade 3216 to press against the lower facade 222 of the adjacent floor 2. Normally, an expansion joint C7 should be reserved at the junction of floor 2a and the wall or tile, causing the floor 2a adjacent to the wall or tile to shift horizontally towards the tile or wall, as shown in Figures 14-18. Floor 2a and floor 2b are combined together. Floor 2a is close to wall 50. There is an expansion joint C7 between floor 2a and the wall. When the flatness of the ground 60 is uneven (when the flatness of the ground is checked with a 2m straightedge, the maximum chord height between the straightedge and the ground should be greater than 3mm or even higher), when the front of floor 2a or floor 2b is subjected to pressure, the locking fastener 3 may generate external force that causes the seventh convex outer facade 3213 and the eighth convex outer facade 3216 to press against the lower facade 222 of the adjacent floor 2 respectively. Floor 2a moves towards the wall in the direction of arrow A21. The locking fastener 3 may rotate. Therefore, it is necessary to further solve the problem of the locking fastener of the adjacent floor 2 near the tile or wall.

[0310] As shown in Figures 14-13, in this second preferred embodiment, the inner inclined surface 2235 of the lower groove is a concave arc-shaped surface. Embodiments of the present invention

[0311] Third preferred embodiment of the present invention:

[0312] As shown in Figures 15 and 16, Figure 15 is a cross-sectional structural diagram of the locking member 3 according to the third preferred embodiment of the present invention, and Figure 16 is a three-dimensional structural diagram of the locking member 3.

[0313] As shown in Figure 15, the third lock body 34 replaces the first lock body 31 of the latch 3, and the latch 3 with the third lock body 34 but without the first lock body 31 is set as the latch 3 with the third lock body.

[0314] The third lock body 34 includes a first base plate 342 and a first locking bar 343. The first base plate 342 is placed horizontally. One edge of the first base plate 342 is connected to the edge at the intersection of the vertical bar 321 and the second base plate 323. With the vertical bar 321 as a reference, in the horizontal direction and / or position, the first base plate 342 is on the opposite side of the second base plate 323. The first locking bar 343 is connected to the other edge of the upper surface of the first base plate 342.

[0315] Furthermore, the upper surface of the first base plate 342 and the upper surface of the second base plate 323 are on the same plane, and the thickness of the first base plate 342 in the vertical direction is the same as the thickness of the second base plate 323 in the vertical direction.

[0316] Furthermore, in the horizontal direction and / or position, the first card strip 343 is sequentially provided with a first card strip inner surface 3431, a first card strip upper inclined surface 3432, a first card strip upper surface 3433, and a first card strip outer surface 3434. The first card strip inner surface 3431 faces the direction of the vertical strip 321. The lower edge of the first card strip inner surface 3431 is connected to the upper surface of the first base plate 342. The upper edge of the first card strip inner surface 3431 is connected to the side edge of the first card strip upper surface 3433 to form an inclined surface, which is the first card strip upper inclined surface 3432. The other edge of the first card strip upper surface 3433 is connected to the upper edge of the first card strip outer surface 3434. The lower edge of the first card strip outer surface 3434 is connected to the outer edge of the upper surface of the first base plate 342.

[0317] As shown in Figures 17-1 to 17-10, the third lock body fastener 3" shown in Figure 15 is used in combination with the fastener 3 shown in Figure 10 to lock and fix adjacent floor 2a and floor 2b. Before the fastener 3 is pre-attached to floor 2a, the third lock body fastener 3" is pre-attached to floor 2a. The specific steps are shown in Figures 17-1 to 17-5, as follows:

[0318] 3.1.1) As shown in Figure 17-1, the locking fastener 3" with the third lock body is tilted at a certain angle so that the lower groove 223a of the floor 2a is hung on the second locking strip 324, and then the locking fastener 3" with the third lock body is rotated around the second locking strip 324 in the lower groove 223a.

[0319] 3.1.2) As shown in Figure 17-2, the guide surface 333 of the paddle lock bar of the third lock body latch 3” abuts against the outer bottom surface 2112a of the upper protrusion of the floor 2a. Due to the wedge effect between the upper protrusion 21a and the lower protrusion 22a, the upper protrusion 21a and the lower protrusion 22a can open a certain distance under the action of external force, so that the guide surface 333 of the paddle lock bar moves towards the bottom side wall 201a of the first groove along the opened dotted line portion of the outer bottom surface 2112a of the upper protrusion.

[0320] 3.1.3) As shown in Figure 17-3, the guide surface 333 on the paddle lock bar is further made to slide over the boundary of the outer protrusion 2024a of the upper groove, so that the guide surface 333 on the paddle lock bar enters the upper groove 202a.

[0321] 3.1.4) As shown in Figure 17-4, when the upper protrusion 21a and the lower tenon 22a are no longer subjected to external force, they close and return to their state before opening. This causes the latch bar abutting surface 334 to abut against the third abutting surface 2021a, the inner surface 3241 of the second locking bar to abut against the outer surface 2232a of the lower groove, the bottom surface 3221 of the second inclined pressure bar to abut against the lower inclined surface 225a, and the bottom surface 224a of the lower tenon to abut against the second base plate 323. On the upper surface, the second lock body 32 with the third lock body fastener 3” and the lever lock bar 33 are locked and fixed to the floor 2a, completing the pre-hanging of the third lock body fastener 3” to the floor 2a. It should be noted that the third lock body fastener 3” is pre-hanging on one side of the opposite side of the floor 2a, and the third lock body fastener 3” is pre-hanging on the side of the floor 2a at a certain distance on the same side of the floor 2a. Figure 17-5 shows a three-dimensional schematic diagram.

[0322] As shown in Figure 17-4, the floor 2 also includes a third lock body fastener 3".

[0323] As shown in Figure 17-4, the third lock body fastener 3” is horizontally fixed in the first groove 20a on at least one side of the floor 2, but there is no third lock body fastener 3” on the other side of the floor 2 that is pre-installed with the third lock body fastener 3”; Figure 17-5 shows a three-dimensional schematic diagram of the floor 2 that has been pre-installed with the third lock body fastener 3”.

[0324] 3.2.1) As shown in Figure 17-6. Continue to implement steps 2.1.1) to 2.1.4) of the second preferred embodiment, and perform pre-hanging on one of the sides of the fastener 3 opposite to the floor 2a. It should be noted that, as shown in Figure 17-6, the first lock body 31 of the fastener 3 is pre-hanged on the same side of the floor 2a where the third lock body fastener 3" has already been pre-hanged, and at least one empty position between adjacent third lock body fasteners 3" is selected for pre-hanging the fastener 3. Figure 17-7 is a perspective view of the fastener shown in Figure 17-6.

[0325] As shown in Figure 17-6, the floor 2 also includes a locking fastener 3 and a locking fastener 3" with a third locking body.

[0326] 3.2.2) As shown in Figure 17-8, the lower groove 223b of the side of the floor 2b without the pre-attached third lock body fastener 3” is hung on the second clip 324 of the pre-attached lock body fastener 3 of the floor 2a. The steps 2.2.1) to 2.2.6) of the second preferred embodiment are continued to be implemented, so that the lock body fastener 3 and the lock body fastener 3” are combined and locked and fixed with the floor 2a. Figure 17-9 is a three-dimensional schematic diagram of Figure 17-8.

[0327] 3.2.3) Continuing with the locking and fixing process of steps 2.2.1) to 2.2.6) of the second preferred embodiment, when the third lock body locking fastener 3" and the locking fastener 3 are used together to lock and fix the adjacent floor 2, the first lock body 31 is locked and fixed to the floor 2. At the same time, when the second lock body 32 and the lever locking bar 33 are locked and fixed to the adjacent floor 2a and floor 2b, the lower groove 223b of the floor 2b connected to the second lock body 32 is engaged with the first locking bar 343 containing the third lock body locking fastener 3", so that the inner surface 3431 of the first locking bar abuts against the outer surface 2232b of the lower groove. The adjacent floor 2a and floor 2b are locked and fixed with the locking fastener 3 and the lever locking bar 3. The third locking body and the locking fastener 3" are combined and locked together. As shown in Figure 17-10, I, II and III are cross-sectional schematic diagrams of the combination and locking of adjacent floor 2a and floor 2b with locking fastener 3 and the third locking body and the locking fastener 3". As shown in Figure 17-10, I shows the locking fastener 3 and the third locking body and the locking fastener 3" connected at different positions on the same side of floor 2a and floor 2b. In order to clearly understand how the locking fastener 3 and the third locking body and the locking fastener 3" are related to floor 2a and floor 2b, as shown in Figure 17-10, II and III are schematic diagrams of the locking fastener 3 and the third locking body and the locking fastener 3" respectively connecting floor 2a and floor 2b.

[0328] Technical points: The third locking body fastener 3" cannot be locked and fixed to the adjacent floor 2 alone in this invention. The third locking body fastener 3" must be used in combination with the fastener 3 shown in Figure 4 of the first embodiment to jointly lock and fix the floor 2 shown in Figure 2, or in combination with the fastener 3 shown in Figure 10 to jointly lock and fix the floor 2 shown in Figure 8. The main advantages of adding the third locking body fastener 3" at intervals on the same side of adjacent floor 2 to assist the fastener 3 in jointly locking and fixing the adjacent floor 2 are as follows:

[0329] The first advantage is that it helps solve the problem of insecure locking and fixing of adjacent floorboards 2 as shown in Figures 14-18. As can be seen from Figures 14-18, if the locking fastener 3 rotates, floorboards 2a and 2b may separate. This separation is caused by the locking fastener 3 rotating at the connection between floorboards 2a and 2b under external force, resulting in the seventh convex outer facade 3213 and the eighth convex outer facade 3216 pressing against the two adjacent lower facades 222b and 222a respectively. Therefore, floorboards 2a and 2b will have gaps and / or height differences. As shown in Figures 17-10, by using the third locking body locking fastener 3" and the locking fastener 3 together to lock and fix adjacent floorboards 2a and 2b, the inner facades 3431 and 3241 of the first and second locking strips respectively abut against each other. The third locking body fastener 3" rests against the outer surface 2232 of the groove of the adjacent floor 2, thus restricting the horizontal movement of floor 2a and floor 2b to the outside of the connection. Since the seventh protruding outer surface 3213 and the eighth protruding outer surface 3216 of the fastener 3 abut against the two adjacent lower surfaces 222b and lower surface 222a respectively, and the seventh protruding outer surface 3213 and the eighth protruding outer surface 3216 of the third locking body fastener 3" abut against the two adjacent lower surfaces 222a and lower surface 222b respectively, the fastener 3 cannot rotate at the connection of floor 2a and floor 2b. It can be seen that the third locking body fastener 3" not only strengthens the horizontal locking strength of the adjacent floor 2 on the side of the floor, but also makes the fastener 3 stable at the connection of the adjacent floor 2 without rotation, so that the adjacent floor 2 is locked and fixed firmly in the vertical direction on the front of the floor.

[0330] The second advantage is that the horizontal locking strength of the adjacent floorboards on both sides is 20-50% higher than that of existing click-lock floorboards. As shown in Figures 17-10, the lower end of the tenon 22 and the upper end of the first groove 20 are equipped with two horizontal locking devices between the two layers. Specifically, on both sides of the adjacent floorboards between the upper end of the first groove 20, there are abutment restrictions between the first abutment surface 3131 and the third abutment surface 2021a, and abutment restrictions between the lever lock strip abutment surface 334 and the third abutment surface 2021b. At the same time, a third lock is provided between the lower end of the tenon 22a. The inner surfaces 3431 and 3241 of the first and second locking strips of the body lock fastener 3" respectively abut against the outer surfaces 2232b and 2232a of the groove of the adjacent floor 2b and floor 2a, respectively. In particular, it is preferable that the outer surface 2232 of the groove is at a right angle with respect to the horizontal plane, so that the first locking strip 343 and the second locking strip 324 of the third lock body lock fastener 3" are more stable and securely locked to the adjacent floor 2. Therefore, the horizontal locking strength of the side of the adjacent floor 2 is increased by 20-50% compared with the existing locking floor.

[0331] The third advantage is that the horizontal locking device combination between the two layers is provided at the lower end of the tenon 22 and the upper end of the first groove 20. This structure can effectively improve the problem of height difference between adjacent floorboards 2 caused by deformation and twisting of the floorboard 2 due to the combined effects of wood internal stress and / or environmental humidity and temperature. Usually, the deformation of the floorboard 2 with the wood top layer is caused by the increase or decrease of the humidity level of the floorboard 2, which can cause the floorboard to bulge, sink, or arch, especially perpendicular to the fiber orientation, such as in the corner or center of the short edge portion. Parallel floorboards may be less sensitive to unwanted sinks or arches because the deformation of two adjacent edge portions is very similar. Therefore, as shown in Figures 17-10, when the protrusion 21 on the adjacent floorboard 2 expands due to excessive humidity (arrow A25 direction) and arches, the first abutment surface 3131 and the third abutment surface 2021a on both sides of the adjacent floorboards at the upper end of the first groove 20, and the lever locking strip abutment surface 334 and the third abutment surface 2021a, respectively, provide abutment restriction. The restraining measures of surface 2021b can reduce the arching phenomenon at the joint of adjacent floor 2, as shown in Figure 17-10, by tightening the force at the connection of floor 2a and floor 2b according to arrow A26; secondly, when floor 2a and floor 2b are locked and fixed with the locking member 3 and the locking member with the third locking body 3", the seventh protruding outer surface 3213 and the eighth protruding outer surface 3216 abut against the two lower surfaces 222 of the adjacent floor 2. When the lower tenon 22 of the two adjacent floor 2 expands and deforms due to excessive humidity, the lower tenon 2 The lower layer of 2a has a third locking body fastener 3” whose first and second inner surfaces 3431 and 3241 respectively abut against the outer surface 2232 of the groove of the adjacent floor 2. This abutment and restriction measure can reduce the phenomenon of the joint of the adjacent floor 2 being recessed downward on the front of the floor 2. Therefore, it can reduce the horizontal gap and vertical misalignment between the upper surfaces 212 of the adjacent floor 2 due to the internal stress of the wood and / or environmental humidity and temperature of the wooden floor 2, especially the single-layer wooden floor 2.

[0332] The fourth advantage is that it enables the better implementation of the technical solution of the fourth preferred embodiment of the present invention.

[0333] The fifth advantage is that it enables the better implementation of the technical solution of the fifth preferred embodiment of the present invention.

[0334] The sixth advantage is that it enables the better implementation of the technical solution of the sixth preferred embodiment of the present invention.

[0335] The seventh advantage is that it enables the better implementation of the technical solution of the seventh preferred embodiment of the present invention.

[0336] Fourth preferred embodiment of the present invention:

[0337] The fourth preferred objective of this invention is that a certain number of wood flooring manufacturers in the field still use four-axis four-sided planers for grooving equipment. These planers have two upper and lower axes and two left and right axes. The upper and lower axes typically process the bottom surface (including the lower groove 223) and the front surface of the flooring, while the left and right axes typically process the horizontal groove of the first groove 20 without the upper groove 202. Therefore, a four-axis four-sided planer refers to a grooving equipment that processes the upper groove 202 of the flooring 2 of this invention without an oblique axis. Manufacturers using four-axis four-sided planers lack the oblique axis for processing the upper groove 202 when processing flooring tongue and groove. To fully cover manufacturers using four-axis four-sided planers with the technical solution of this invention, as shown in Figures 18 and 19, Figure 18 shows the lockless locking member 3 of the fourth preferred embodiment of this invention, and Figure 19 shows the flooring 2 without the upper groove of the fourth preferred embodiment of this invention.

[0338] As shown in Figure 18, the locking member 3 has an unlimited lock head 313. The locking member 3 with unlimited lock head 313 is set as a lockless locking member 3. The upper edge of the inner side surface 3113 of the first tenon and the side edge of the upper surface 3111 of the first tenon are connected to form an inclined surface, which is set as the sixth abutment surface 351. The upper edge of the sixth abutment surface 351 is connected to the upper surface 3111 of the first tenon to form a fifth protrusion 352. The upper surface 3111 of the first tenon is a locking surface, and the vertical distance V9 between the upper surface 3111 of the first tenon and the bottom surface 3112 of the first tenon is equal to the vertical distance V1 between the bottom surface 211 of the upper protrusion and the upper surface 221 of the lower tenon as shown in Figure 19.

[0339] When the second base plate 323 of the lockless latch 3 is in a horizontal state, the upper surface 3111 of the first protrusion of the lockless latch 3 is flush with the surface of the abutment surface 334 of the lever lock bar in the horizontal direction.

[0340] As shown in Figure 19, the floor 2 has no upper groove 202, and the floor 2 without upper groove 202 is set as the floor 2 without upper groove.

[0341] When the third lock body latch 3" is placed horizontally, as shown in Figure 20-1 in this embodiment; the included angle A1 formed by the connection between the upper surface of the second inclined pressure strip 322 of the third lock body latch 3" and the upper surface 331 of the lever lock strip is set to: 35º≤A1≤180º, preferably 86º≤A1≤180º, as shown in Figure 20-1, A1 equals 180º. As can be seen from Figure 20-2, when angle A1 equals 121º, the third lock body latch 3" will have a certain deformation, but its function and role are completely consistent with the third lock body latch 3" shown in Figure 20-1; therefore, this fourth preferred embodiment uses angle A1 equal to 180º as the implementation scheme description; and appropriately extends the lever lock strip 33, as shown in Figure 20-1, with an eleventh protrusion 3321 horizontally extending from the end of the lever lock strip 33 with the third lock body latch 3"; the eleventh protrusion 3321 includes an eleventh protrusion upper surface 3323, which partially overlaps with the abutment surface 334 of the lever lock bar with the third lock body latch 3". The eleventh protrusion upper surface 3323 includes the abutment surface 334 of the lever lock bar. The eleventh protrusion upper surface 3323 is parallel to the upper surface of the second base plate 323. The eleventh protrusion upper surface 3323 is a locking surface, and the vertical distance V8 between the eleventh protrusion upper surface 3323 and the upper surface of the second base plate 323 is equal to the vertical distance V10 between the bottom surface 211 of the upper protrusion and the bottom surface 224 of the lower tenon (as shown in Figure 18).

[0342] As shown in Figures 21-1 to 21-4, Figure 19 illustrates a typical installation step of the fourth preferred embodiment of the present invention, where the third lock body fastener 3 is installed into the floor 2 without an upper groove shown in Figure 18 for pre-hanging. The details are as follows:

[0343] 4.1.1) The third locking body fastener 3” is locked and fixed at a certain distance on one of the opposite sides of the floor without upper groove 2, as shown in Figure 21-1. First, the third locking body fastener 3” is tilted at a certain angle so that the lower groove 223a of the floor without upper groove 2a is hung on the second clip 324. The third locking body fastener 3” rotates around the second clip 324 in the lower groove 223a in the direction of arrow A16 so that the upper edge of the eleventh protrusion 3321 of the third locking body fastener 3” abuts against the bottom surface 211a of the upper protrusion.

[0344] 4.1.2) As shown in Figure 21-1, the eleventh protrusion 3321 presses upward against the bottom surface 211a of the upper protrusion. Since there is a certain gap C9 between the lower inclined surface 225a and the bottom surface 3221 of the second inclined pressure strip and / or the bottom surface 332 of the lever lock strip, the second locking strip 324 moves downward along the outer vertical surface 2232a of the lower groove. As shown in Figure 21-2, during the rotation of the third lock body buckle 3", the bottom surface 3221 of the second inclined pressure strip abuts against the lower inclined surface 225a, and the upper side edge of the eleventh protrusion 3321 abuts against the bottom surface 211a of the upper protrusion.

[0345] 4.1.3) As shown in Figure 21-3, continue to rotate the third lock body fastener 3” in the direction of arrow A16, so that the upper side edge of the eleventh protrusion 3321 with the third lock body fastener 3” presses the bottom surface 211a of the upper protrusion upward. Since there is a wedge effect between the upper protrusion 21a and the lower protrusion 22a, the upper protrusion 21a and the lower protrusion 22a can be opened by a certain distance under the action of external force, so that the eleventh protrusion 3321 moves towards the bottom side wall 201a of the first groove along the opened dotted line portion of the upper protrusion bottom surface 211a.

[0346] 4.1.4) As shown in Figures 21-4, the upper protrusion 21a and the lower protrusion 22a lose their closure due to external force, causing the bottom surface 3221 of the second inclined strip to abut against the lower inclined surface 225a of the floor without upper groove 2a, the bottom surface 224a of the lower protrusion to abut against the upper surface of the second base plate 323, the inner vertical surface 3248 of the second clip to abut against the outer vertical surface 2232a of the lower groove, and the upper surface 3323 of the eleventh protrusion to abut against the bottom surface 211a of the upper protrusion, thereby locking and fixing the third locking body fastener 3" with the floor without upper groove 2a, completing the pre-hanging of the third locking body fastener 3" with the floor without upper groove 2a.

[0347] As shown in Figures 21-5, a third lock body fastener 3” is fixed at a certain distance to the side of the grooveless floor 2a, and the side of the grooveless floor 2a with the third lock body fastener 3” does not have the third lock body fastener 3” on the opposite side.

[0348] As shown in Figures 21-4, the floor without the upper groove 2 also includes a third lock body fastener 3".

[0349] Technical points: As can be seen from Figure 20-1, the second inclined pressure strip 322 and the paddle lock strip 33 are extended compared to the third lock body fastener 3” shown in Figure 15 of the third preferred embodiment. In order to prevent the pressure from being applied directly to the upper surface 3323 of the eleventh protrusion through the bottom surface 211a of the upper convex body of the floor without upper groove 2a when the front of the floor without upper groove is subjected to pressure, causing the paddle lock strip 33 to bend and deform downward easily, as shown in Figure 21-4; therefore, as shown in Figure 20-1, the thickness V3 of the paddle lock strip 33 and the thickness V4 of the second inclined pressure strip 322 should be appropriately thickened compared to the thickness of the fastener 3 shown in Figure 14-13 of the second preferred embodiment. Usually, V3 and V4 of the third lock body fastener 3” shown in Figure 20-1 are set as follows: 0.85mm≤V3≤2.5mm, preferably 1.1mm≤V3≤1.8mm, wherein preferably V4≥V3;

[0350] As shown in Figures 21-6 and 21-7, the floor 2 without an upper groove with a third lock body fastener 3” in Figure 21-4 is pre-attached with a lockless fastener 3. Since the lockless fastener 3 is pre-attached on the same side of the floor 2a without an upper groove with the third lock body fastener 3”, and the lockless fastener 3 is arranged at least in the empty space between two adjacent lock bodies fasteners 3”, in order to enable those skilled in the art to clearly understand the demonstration of the pre-attaching process of the lockless fastener 3 and the floor 2a with the pre-attached third lock body fastener 3”, the lockless fastener 3” is removed in the demonstration in Figure 21-6.

[0351] 4.2.1) As shown in Figures 21-6, the headless locking fastener 3 is tilted at a certain angle so that the sixth abutting surface 351 abuts against the bottom surface 211a of the upper protrusion. At this time, the vertical distance V11 between the sixth abutting surface 351 and the bottom surface of the rotating protrusion 314 is less than the vertical distance V1 between the bottom surface 211a of the upper protrusion and the upper surface 221a of the lower protrusion. The first protrusion 311 of the headless locking fastener 3 is translated towards the bottom side wall 201a of the first groove so that the rotating protrusion 314 abuts against the upper surface 221a of the lower protrusion.

[0352] 4.2.2) As shown in Figures 21-7, the first tenon 311 is moved along the upper surface 221a of the lower tenon towards the bottom side wall 201a of the first groove, so that the upper surface 331 of the lever lock bar abuts against the upper vertical surface 212a, the fifth protrusion 352 or the sixth abutting surface 351 abuts against the bottom surface 211a of the upper protrusion, and the rotating protrusion 314 abuts against the upper surface 221a of the lower tenon. The lockless fastener 3 and the lock fastener 3" with the third lock body are arranged at intervals on the same side of the floor without the upper groove 2a, and the lockless fastener 3 and the floor without the upper groove 2a are pre-attached.

[0353] The grooveless floor 2 also includes a lockless locking fastener 3 and a locking fastener 3 with a third lock body.

[0354] As shown in Figures 22-1 to 22-4, these are typical installation steps for using a combination of a locking fastener 3" with a third locking body and a locking fastener 3 without a locking head to lock and fix the recessed floor 2a and the recessed floor 2b together. The specific steps are as follows:

[0355] 4.3.1) As shown in Figure 22-1, lift the floor 2b without the upper groove to a certain height, so that the lower groove 223b on one side of the floor 2b without the upper groove without the third lock body fastener 3” is hung on the second locking strip 324 of the lock head fastener 3 that has been set on the floor 2a, and the outer part of the lower protrusion 22b of the floor 2b without the upper groove falls into the second groove 325 of the lock head fastener 3.

[0356] 4.3.2) As shown in Figure 22-2, when the upper grooveless floor 2b is pressed down, the lower groove guide surface 223b of the upper grooveless floor 2b and the lower tenon bottom surface 224b intersect and abut against the upper surface of the second base plate 323 of the lock-free fastener 3, causing the first tenon 311 to rotate around the support point S5 of the rotating protrusion 314 abutting against the upper surface 221a of the lower tenon within the first groove 20a. It should be further noted that during the rotation process, the first tenon 311 will move along the upper surface 221a of the lower tenon towards the groove of the first groove 20a. The outer side rotates and moves, so that the support point S5 where the first tenon 311 rotates is not limited to the current horizontal position. Therefore, the "support point S5" can also be extended to the "support area S5". During the rotation of the lockless fastener 3, the fifth protrusion 352 presses the bottom surface 211a of the upper protrusion upward. Since there is a wedge effect between the upper protrusion 21a and the lower tenon 22a, the upper protrusion 21a and the lower tenon 22a can open a certain distance under the action of external force, so that the fifth protrusion 352 moves along the bottom surface 211a of the upper protrusion along the dotted line towards the groove of the first groove 20a.

[0357] 4.3.3) As shown in Figure 22-2, while pressing down on the floor 2b to be installed without the groove, the guide surface 333 on the lever lock bar moves along the upper dotted line of the upper convex bottom surface 211bd of the floor 2b without the groove towards the bottom wall 201b of the first groove.

[0358] 4.3.4) As shown in Figure 22-3, during the rotation of the first tenon 311 around the rotating protrusion 314 in the first groove 20a, the lower groove outer surface 2232b of the floor 2b without upper groove adjacent to the floor 2a abuts against the first upper inclined surface 3432 of the first clip 343 of the third lock body fastener 3” on the floor 2a without upper groove.

[0359] 4.3.5) As shown in Figure 22-4, when the fifth protrusion 352 slides past the point where the bottom surface 211a of the upper protrusion is at its highest tension, the upper protrusion 21a and the lower tenon 22a gradually close and return to their pre-opening state as the external force gradually disappears. This causes the upper surface 3111 of the first tenon to abut against the bottom surface 211a of the upper protrusion, the bottom surface 3112 of the first tenon to abut against the upper surface 221a of the lower tenon, and the bottom surface 3121 of the first inclined strip to abut against the lower inclined surface 225a. This locks the first lock body 31 of the lockless fastener 3 and the connected floor 2a without an upper groove in the vertical direction of the front of the floor.

[0360] 4.3.6) As shown in Figure 22-4, the upper abutting surface 334 of the lever lock bar abuts against the bottom surface 211b of the upper protrusion, so that the bottom surface 3221 of the second inclined pressure bar abuts against the lower inclined surface 225b of the floor without upper groove, the bottom surface 224b of the lower protrusion abuts against the upper surface of the second base plate 323, and the inner vertical surface 3241 of the second locking strip abuts against the outer vertical surface 2232b of the lower groove, so that the floor without upper groove 2b, the lever lock bar 33 and the second lock body 32 are locked and fixed in the vertical direction of the floor surface;

[0361] 4.3.7) As shown in Figure 22-4, the lower surfaces 222a and 222b of adjacent grooveless floor 2a and grooveless floor 2b respectively abut against the eighth convex outer surface 3216 and the seventh convex outer surface 3213 of the lock-free fastener 3. At the same time, the lower surfaces 222a and 222b of adjacent grooveless floor 2a and grooveless floor 2b also abut against the seventh convex outer surface 3213" and the eighth convex outer surface 3216" of the lock-free fastener 3". The third lock-free fastener 3" and the lock-free fastener 3 are used together to lock and fix the adjacent grooveless floor 2a and grooveless floor 2b, and the front surfaces of the two adjacent floor 2 are flush.

[0362] 4.3.8) As shown in Figure 22-4, the inner surface 3431 of the first locking strip and the inner surface 3241 of the second locking strip of the third lock body fastener 3 respectively abut against the outer surface 2232b of the lower groove of the floor 2b and the outer surface 2232a of the lower groove of the floor 2a, so as to realize the horizontal locking and fixing of the adjacent floor 2a and floor 2b without upper groove in the side of the floor.

[0363] Fifth preferred embodiment of the present invention:

[0364] Another advantage of using the third locking body fastener 3" in this invention is that it enables the implementation of the fifth preferred embodiment. Since the curved side floor 2 in customized products in this field can usually only use a flat-mouth male tenon and female groove structure and be installed with the aid of glue, this fifth preferred embodiment can use the technical solution of this invention to realize the locking connection of the curved side floor 2. That is, by pressing vertically, the adjacent curved side floor 2a and the curved side floor 2b with the same curved side floor 2a are locked and fixed by using the fastener 3 and the third locking body fastener 3". As shown in Figure 23-1, it is a schematic diagram of the curved side floor 2a and the curved side floor 2b assembled together. The connection of the adjacent curved side floor 2a and the curved side floor 2b is further described by the side partial area R1 of the two adjacent connected curved edges of the curved side floor 2a and the curved side floor 2b shown in Figure 23-2.

[0365] In the fifth preferred embodiment of the present invention, the arc-shaped side floor 2 is the floor 2 without upper groove in the fourth preferred embodiment of the present invention, and the locking fastener 3 is the locking fastener without a lock head in the fourth preferred embodiment. In the fifth preferred embodiment of the present invention, the locking fastener without a lock head has a seventh protrusion 3211 but no eighth protrusion 3212.

[0366] As shown in Figure 23-3, the bottom surface 3121 of the first inclined pressure strip of the locking member 3 is slightly higher than the bottom surface 3221 of the second inclined pressure strip in the vertical direction, so that the bottom surface 3121 of the first inclined pressure strip and the bottom surface 3221 of the second inclined pressure strip are in a non-mirror relationship with respect to the vertical center line VP. The reference line is the second inclined pressure strip bottom surface 3221d formed by mirroring the bottom surface 3221 of the second inclined pressure strip, as shown in Figure 23-3. The vertical distance V21 between the bottom surface 3121 of the first inclined pressure strip and the bottom surface 3221 of the second inclined pressure strip is higher. The value of V21 is related to the curvature of the curved side of the curved side floor 2, that is, it is related to the radius of the curved side of the curved side floor 2. Generally, V21 can be set to ≥ 0.3 mm, preferably V21 > 0.76 mm, which is basically applicable to the size of the curved radius greater than 100 mm. When the radius of the curved side floor is larger, the value of V21 is smaller.

[0367] Furthermore, the first side facade 3227 of the vertical strip 321 is provided with a seventh protrusion 3211, and the second side facade 3228 of the vertical strip does not have an eighth protrusion 3212. The horizontal distance between the vertical extension line of the second side facade 3228 of the vertical strip 321 and the vertical extension line of the outer facade 3213 of the seventh protrusion is set to L21, and the horizontal distance between the vertical extension line of the outer facade 3213 of the seventh protrusion and the vertical extension line of the inner facade 3241 of the second strip is set to L22. (See Figure 23) -3 The locking member 3 shown is a variation of the locking member 3 shown in Figure 18 in the fourth preferred embodiment of the present invention. Appropriately extending the upper surface 3111 of the first tenon of the locking member 3 towards the outer side 3114 of the first tenon helps to increase the contact area between the bottom surface 211 of the upper protrusion of the floor 2 and the upper surface 3111 of the first tenon. When the front of the floor 2 is subjected to greater pressure, the contact part of the bottom surface 211 of the upper protrusion of the floor 2 is concave upward due to the mutual compression between the upper surface 3111 of the first tenon of the locking member 3 and the bottom surface 211 of the upper protrusion of the floor 2.

[0368] In the fifth preferred embodiment of the present invention, there is a third lock body fastener 3”, which is the same as the third lock body fastener 3” in the fourth preferred embodiment of the present invention. In the fifth preferred embodiment of the present invention, the third lock body fastener 3” has an eighth protrusion 3212 but no seventh protrusion 3211, as shown in Figures 23-4. The third lock body fastener 3” has an eighth protrusion 3212 on the second side facade 3228 of the vertical strip 321, but no seventh protrusion 3211 on the first side facade 3227 of the vertical strip. The horizontal distance between the vertical extension line of the first side facade 3227 of the vertical strip and the vertical extension line of the outer facade 3216 of the eighth protrusion is set to L23. The vertical extension line of the outer facade 3216 of the eighth protrusion is set to the inner facade 3 of the first locking strip. The horizontal distance L24 between the vertical extension lines of 431 is set, and the horizontal distance L25 between the vertical extension line of the first side facade 3227 of the vertical strip and the vertical extension line of the inner facade 3241 of the second card strip is set. The third lock body fastener 3" shown in Figure 23-4 is a variation of the third lock body fastener 3" shown in Figure 20-2 in the fourth preferred embodiment of the present invention. Appropriately extending the upper surface 3323 of the eleventh protrusion in the direction of the first card strip 343 is beneficial to increase the contact area with the bottom surface 211 of the upper protrusion of the floor 2. When the front of the floor 2 is subjected to greater pressure, the contact part of the bottom surface 211 of the upper protrusion of the floor 2 is concave upward due to the mutual compression between the upper surface 3323 of the eleventh protrusion and the bottom surface 211 of the upper protrusion of the floor 2.

[0369] In the fifth preferred embodiment of the present invention, the value of L21 is further set to be less than or equal to the value of L23, and preferably the value of L21 is equal to the value of L23. The value of L21 is set to be less than the vertical distance L9 between the lower surface 222a of the adjacent floor 2a and the lower surface 222b of the floor 2b. As shown in Figures 14-4, when the aluminum alloy material is preferably the locking element 3 and the locking element 3" with the third lock body, the value of L21 is usually greater than 0.8mm, preferably 1.1mm≤L21≤2.2mm. For example, in this fifth preferred embodiment, the value of L21 is equal to the value of L23, and L21 is equal to 1.98mm.

[0370] In a fifth preferred embodiment of the present invention, the values ​​of L22 and L24 are set to be equal, and the value of L24 is set to be less than the value of L25.

[0371] As shown in Figures 23-4, in the fifth preferred embodiment of the present invention, when the upper surface of the second base plate 323 of the third lock body fastener 3" is on the same plane as the upper surface of the second base plate 323 of the fastener 3 shown in Figure 23-3, the bottom surface 3221 of the second inclined pressure strip of the third lock body fastener 3" is set in the vertical direction to be no lower than the bottom surface 3211 of the first inclined pressure strip of the fastener 3 shown in Figure 23-3; Figure 23-5 shows a cross-sectional schematic diagram of the fastener 3 and the third lock body fastener 3" partially overlapping; Figure 23-6 is a three-dimensional schematic diagram of the fastener 3 in the fifth preferred embodiment of the present invention; Figure 23-7 is a three-dimensional schematic diagram of the fastener 3" in the fifth preferred embodiment of the present invention.

[0372] When using the locking fastener 3 and the locking fastener 3" with a third locking body to lock and fix the adjacent floor 2a and floor 2b on the curved side, it is important to note that the first two sets of fixed data are determined. The first set of fixed data is the data of the locking fastener 3 as shown in Figure 23-3 and the locking fastener 3" with a third locking body as shown in Figure 23-4, but does not include the required cutting length. The second set of fixed data is the L4 value as shown in Figure 14-1 in the second preferred embodiment, that is, the horizontal distance L4 between the vertical extension line of the upper facade 212 and the vertical extension line of the lower facade 222 of the curved side floor 2. Based on the above two sets of fixed data, four sets of varying numbers are calculated according to the curvature of the curved side floor 2, that is, the different curvature radii constituting the curved side floor 2. The values ​​are: the cutting length L27 of the latch 3, the cutting length L28 of the latch 3" with the third lock body, the horizontal distance L5a between the vertical extension line of the outer surface 2232a of the recess of the floor 2a and the vertical extension line of the lower surface 222a of the floor 2a, and the horizontal distance L5b between the vertical extension line of the outer surface 2232b of the recess of the floor 2b adjacent to the floor 2a and the vertical extension line of the lower surface 222b of the floor 2b. The values ​​of L5a and L5b are not necessarily the same. If the values ​​of L21 and L23 are set to be equal, the cutting length L27 of the latch 3 and the cutting length L28 of the latch 3" with the third lock body are also equal on the same arc-shaped side edge.

[0373] Typically, those skilled in the art often use CNC milling machines or CNC machining centers to process the curved side floor 2. The advantages of this structural design are obvious. During processing, only one set of milling cutters for the first groove 20 and the lower groove 223 of the lower tenon bottom surface 224 of the floor 2 are needed to perform automatic high-precision processing based on the imported data. The fifth preferred embodiment of the present invention further provides the following steps and methods for calculating the values ​​of L5a and L5b, as well as L27 and L28:

[0374] Firstly, the horizontal position of the locking fastener 3 and the curved side floor 2b is considered to ensure a stable connection between the adjacent curved side floor 2a and the curved side floor 2b. As shown in Figures 22-4 in the fourth preferred embodiment, the upper abutment surface 334 of the lever lock bar abuts against the bottom surface 211b of the upper protrusion, so that the bottom surface 3221 of the second inclined pressure strip abuts against the lower inclined surface 225b of the floor 2b without the upper groove, the bottom surface 224b of the lower tenon abuts against the upper surface of the second base plate 323, and the inner vertical surface 3241 of the second locking strip abuts against the outer vertical surface 2232b of the lower groove, so that the floor 2b without the upper groove abuts against the lower groove. The grooved floor 2b is locked and fixed to the paddle lock bar 33 and the second lock body 32 in the vertical direction on the floor surface. Since the curved side floor 2a and floor 2b are curved sides, while the locking fastener 3 is a straight strip shape, the mutual contact surface between the locking fastener 3 and the curved side floor 2a and curved side floor 2b in the horizontal direction is generally not affected by the radius value of the curved side. However, the mutual contact surface between the inclined surface and the vertical surface of the curved side floor 2a and floor 2b will vary according to the radius value of the curved side floor 2.

[0375] The first step is to determine the length L27 of the locking element 3. As shown in Figure 23-8, the first lock body 31 faces the concave arc-shaped side floor 2a, while the second lock body 32 and the lever lock bar 33 face the convex arc-shaped side floor 2b. First, a conversion formula is given, and then the basis for this formula is explained. Known parameters include the vertical distance L9 between the lower surfaces 222a and 222b of floor 2a and floor 2b, the radius of the arc forming the arc of the arc-shaped side floor 2b is set to R5, and the horizontal distance L21 between the vertical extension line of the second side surface 3228 of the vertical bar and the vertical extension line of the seventh convex outer surface 3213. L27 = It is preferred that the L21 value of the locking element 3 is equal to the L23 value of the locking element 3" with the third lock body, and the L27 value is equal to the L28 value.

[0376] VP is set as the vertical centerline between adjacent floorboards. As shown in Figure 23-8, the upper region R2 is a schematic diagram of the cross-section of adjacent curved side floorboards 2a and 2b. The lower region R1 is a top view connecting adjacent curved side floorboards 2a and 2b. As shown in Figure 23-8, the curve of the vertical centerline VP, the dashed curve 222as of the lower elevation 222a of floorboard 2a, the dashed curve 222bs of the lower elevation 222b of floorboard 2b, and the horizontal centerline HP20 passing through the center of the circle are shown.

[0377] As shown in Figures 23-8, preferably, the seventh convex outer surface 3213 of the locking member 3 abuts against the lower inclined surface 225b of the curved side floor 2b. Since the curved side floor 2b is convex, the seventh convex outer surface 3213 of the locking member 3 abuts against the lower surface 222b0 coordinate point; the vertical extension line of the second side surface 3228 of the vertical strip intersects with the curved dotted line 222as of the curved lower surface 222a of the curved side floor 2a to form two... The coordinates are 222as1 and 222as2, respectively. The vertical distance between the horizontal extension lines HP21 of coordinate point 222as1 and HP22 of coordinate point 222as2 is L27. That is, the seventh convex outer surface 3213 of the two sides of the locking fastener 3 abuts against the two coordinate points 222as1 and 222as2 of the curved side floor 2. As shown in Figure 23-8, the formula can be derived: L27 = .

[0378] As can be seen from Figures 23-8, when the lever lock bar 33 and the second lock body 32 are on one side of the convex arc-shaped side floor 2b, the bottom surface 3221 of the second inclined pressure bar can abut against the lower inclined surface 225b of the arc-shaped side floor 2b, and the bottom surface 3221 of the second inclined pressure bar abuts against the coordinate point 225b0 of the lower inclined surface 225b of the arc-shaped side floor 2b.

[0379] Further calculate the horizontal distance L5a between the vertical extension line of the lower groove outer surface 2232a of floor 2a and the vertical extension line of the lower surface 222a of the curved side floor 2a, and the horizontal distance L5b between the vertical extension line of the lower groove outer surface 2232b of the curved side floor 2b adjacent to the curved side floor 2a and the vertical extension line of the lower surface 222b of the curved side floor 2b, as shown in Figure 23-9. Set the center line of the vertical extension line VPb1 of the inner surface 3241 of the second card strip, where the center line of VPb1 intersects the horizontal extension lines HP21 and HP22 to form two coordinate points 2232bs1 and 2232bs2 respectively. The formula for obtaining the value of L5b from Figure 23-9 is: L5b=L5-L9-L21.

[0380] Furthermore, as shown in Figure 23-10, the center line of the vertical extension line VPa1 of the inner surface 3431 of the first locking strip of the third lock body locking buckle 3" is provided. The center line of VPb1 intersects with the center line of HP20 in the horizontal direction to form a coordinate point 2232a0. The formula for obtaining the value of L5a from Figure 23-9 is: L5a=L5.

[0381] As shown in Figures 23-9 and 23-10, it can be concluded that when the second lock body 32 and the paddle lock bar 33 of the locking fastener 3 and the first locking bar 343 of the locking fastener 3" are on the side of the convex arc-shaped side floor 2b, the value of L5a is greater than the value of L5b.

[0382] As shown in Figures 23-9, the vertical distance V21 between the bottom surface 3121 of the first inclined pressure strip and the bottom surface 3221 of the second inclined pressure strip is higher than that of the second inclined pressure strip. The value of V21 is related to the curvature of the curved side of the curved side floor 2. Typically, V21 can be set to ≥ 0.3 mm, preferably V21 > 0.76 mm, which is applicable to dimensions with a curvature radius greater than 100 mm. This design requirement allows the upper surface 3111 of the first tenon to abut against the bottom surface 211a of the upper protrusion of the curved side floor 2a when the locking fastener 3 and the curved side floor 2a are locked together. This also allows the bottom surface 3112 of the first tenon to abut against the upper surface 221a of the lower tenon of the curved side floor 2a, thus locking the locking fastener 3 and the curved side floor 2a together in the vertical direction.

[0383] As shown in Figures 23-9, the upper surface of the second base plate 323 of the fastener 3 abuts against the bottom surface 224b of the lower protrusion of the curved side floor 2b, the bottom surface 3221 of the second inclined strip of the fastener 3 abuts against the lower inclined surface 225b of the curved side floor 2b, the abutting surface 334 of the latching strip of the fastener 3 abuts against the bottom surface 211b of the upper protrusion of the curved side floor 2b, and the inner vertical surface 3241 of the second locking strip of the fastener 3 abuts against two coordinate points 2232bs1 and 2232bs2 of the outer vertical surface 2232bs of the lower groove of the curved side floor 2b, so that the fastener 3 and the curved side floor 2b are locked and fixed in the vertical direction.

[0384] As shown in Figure 23-10, when the third lock body fastener 3” and the fastener 3 are used together to lock adjacent curved side floor 2a and curved side floor 2b, the first locking strip 343 of the third lock body fastener 3” and the second locking strip 324 of the fastener 3 are on the same side. After the third lock body fastener 3” is locked and fixed with the curved side floor 2a, the upper surface 3323 of the eleventh protrusion of the third lock body fastener 3” abuts against the bottom surface 211a of the upper protrusion of the curved side floor 2a. It should be noted that the fastener 3 and the third lock body fastener 3” are spaced apart on the side of the curved side floor 2, and the upper surface of the second bottom plate 323 of the third lock body fastener 3” is adjacent to the curved side floor 2b. The bottom surface 224a of the tenon of floor 2a abuts against the upper surface of the first base plate 342 of the third lock body fastener 3" abuts against the bottom surface 224b of the tenon of the curved side floor 2b. The inner surface 3431 of the first clip of the third lock body fastener 3" abuts against the two coordinate points 2232bs3 and 2232bs4 of the outer surface 2232bs of the lower groove of the curved side floor 2b. The inner surface 3241 of the second clip of the third lock body fastener 3" abuts against the coordinate point 2232a0 of the outer surface 2232a of the lower groove of the curved side floor 2a. Thus, the third lock body fastener 3" is locked and fixed to the curved side floor 2a and the curved side floor 2b in the horizontal direction.

[0385] As shown in Figure 23-9, after the locking fastener 3 is locked and fixed to the curved side floor 2a and the adjacent curved side floor 2b, since the floor 2a is a curved side, depending on the size of the curvature of the curved side, the bottom surface 3121 of the first inclined pressure strip of the locking fastener 3 may not abut against the lower inclined surface 225a of the curved side floor 2a. Similarly, as shown in Figure 23-10, the bottom surface 3221 of the second inclined pressure strip of the locking fastener 3" with the third lock body also does not abut against the lower inclined surface 225a of the curved side floor 2a. This will inevitably cause the locking fastener 3 and the locking fastener 3" with the third lock body to easily rotate in the direction of arrow A16. Therefore, according to the formula L27= Calculations show that when the length of the locking element 3 is calculated to be L27, the second side surface 3228 of the vertical strips on both sides of the length direction of the locking element 3 abuts against two coordinate points 222as1 and 222as2 on the arc-shaped lower surface 222as of the arc-shaped side floor 2a. At the same time, the first side surface 3227 of the vertical strip of the third lock body locking element 3" abuts against two coordinate points 222as1 and 222as2 on the arc-shaped lower surface 222as of the arc-shaped side floor 2a. Such abutment and restraint measures make it difficult for the locking element 3 and the third lock body locking element 3" to rotate in the direction of arrow A16.

[0386] Another scenario, as shown in Figure 23-11, involves two slightly S-shaped curved side panels 2a and 2b on the same floor. It can be seen that one side of each curved side panel 2a and 2b has both a concave curved side and a convex curved side. Figures 23-3 to 23-10 have described in detail how the first locking body 31 of the locking fastener 3 and the eleventh protrusion 3321 of the locking fastener 3" are calculated on the side of the concave curved side panel 2a to obtain the values ​​L27, L28, and L5a. The methods and steps for calculating the values ​​of L27, L28, L5a, and L5b are further described below. This is as shown in Figure 23-11, where one side of the convex arc-shaped side floor 2b in the R6 region is connected to a locking element 3. Specifically, this is done when the convex arc-shaped side floor 2b is on the side of the first lock body 31 and the eleventh protrusion 3321 of the third lock body locking element 3", i.e., when the corresponding second lock body 32 lever lock bar 33 is positioned on the side of the concave arc-shaped side floor 2a.

[0387] The first step is to follow the formula L27= The value of L27 can be calculated. It is preferable to set the value of L21 of the locking element 3 to be equal to the value of L23 of the locking element 3" with the third lock body, and the value of L27 to be equal to the value of L28.

[0388] As shown in Figure 23-12, firstly, the second side face 3228 of the vertical strip of the locking member 3 is placed against the lower face 222b of the curved side floor 2b. Based on the intersection of the vertical extension line VPb3 of the seventh convex outer face 3213 and the curved lower face 222as of the curved side floor 2a, two coordinate points are formed: 222as3 and 222as4. The vertical distance between the horizontal extension lines HP21 and HP22 of coordinate points 222as3 and 222as4 is L27. From Figure 23-12, the formula can be derived: L27 = .

[0389] Furthermore, as shown in Figure 23-13, a point on the lower inclined surface 225a of the curved side floor 2a is designated as coordinate point 225as. The vertical distance between the horizontal extension line of coordinate point 225as and the horizontal extension line of the bottom surface 224a of the lower tenon of the curved side floor 2a is set as L29. As shown in Figure 23-13, the coordinate point 225as intersects the horizontal extension lines HP21 and HP22 along the side edge of the curved side at the same height L29, forming two coordinate points 225as1 and 225as2 respectively. The two coordinate points 225as1 and 225as2 fall on the same vertical line VPb5. A point on the lower inclined surface 225a is designated as the vertical extension line VPb4 of coordinate point 225as. The horizontal distance VPb5 between the vertical extension line of coordinate point 225as1 and the horizontal extension line of the second base plate 323 of the fastener is L30. As shown in Figure 23-13, the value of L30 is equal to the displacement value of the fastener 3, that is, L30 = L9 - L21. When the side of the straight floor 2 is locked and fixed with the fastener 3, that is, when the fastener 3 has no displacement, the bottom surface 3221 of the second inclined strip of the fastener 3 abuts against the lower inclined surface 225 of the floor 2. Therefore, when the fastener 3 is displaced, the vertical distance between the horizontal extension line of coordinate point 3221as of the fastener 3 and the horizontal extension line of the upper surface of the second base plate 323 of the fastener 3 is set as L31. From this, it can be concluded that the value of L29 is equal to the value of L31. Therefore, when the length L27 of the fastener 3 is calculated according to the formula L27 = When cutting and using, the bottom surface 3221 of the second inclined strip of the locking member 3 can abut against the lower inclined surface 225a of the curved side floor 2a.

[0390] Furthermore, as shown in Figure 23-14, the outer facade 2232a5 of the lower groove is a schematic diagram of the dimensions of the original straight floor 2. It can be seen that the outer facade 2232a5 of the lower groove falls outside the inner facade 3241 of the first clip of the locking member 3. Therefore, the outer facade 2232a5 of the lower groove must be moved so that the outer facade 2232a5 of the lower groove abuts against the inner facade 3241 of the first clip of the locking member 3. The distance between the vertical extension line of the outer facade 2232a of the lower groove of the curved side floor 2a and the vertical extension line of the lower facade 222a of the curved side floor 2a is calculated. The horizontal distance L5a is the distance between the vertical extension line of the outer surface 2232b of the lower groove of the curved side floor 2b adjacent to the curved side floor 2a and the vertical extension line of the lower surface 222b of the curved side floor 2b, as shown in Figure 23-14. The center line of the vertical extension line VPa2 of the inner surface 3241 of the second card strip is set, where the center line of VPa2 intersects with the horizontal center line HP20 passing through the center of the circle to form the coordinate point 2232a3. From Figure 23-14, the formula for the value of L5a can be obtained as: L5a=L5-L9-L21.

[0391] Furthermore, as shown in Figure 23-15, the center line of the vertical extension line VPb2 of the inner surface 3431 of the first locking strip of the third lock body is provided. The center line of VPb2 intersects with the horizontal extension lines HP21 and HP22 respectively to form two coordinate points 2232bs3 and 2232bs4. The formula for obtaining the value of L5b from Figure 23-15 is: L5b=L5.

[0392] As shown in Figure 23-13, when the locking fastener 3 and the curved side floor 2b are locked together, the upper surface 3111 of the first tenon can abut against the bottom surface 211b of the upper protrusion of the curved side floor 2b, so that the bottom surface 3112 of the first tenon abuts against the upper surface 221b of the lower tenon of the floor 2b, thereby locking the locking fastener 3 and the curved side floor 2b together in the vertical direction.

[0393] As shown in Figure 23-13, the upper surface of the second base plate 323 of the fastener 3 abuts against the bottom surface 224a of the lower protrusion of the curved side floor 2a, the bottom surface 3221 of the second inclined strip of the fastener 3 abuts against the lower inclined surface 225a of the curved side floor 2a, the abutting surface 334 of the lever lock strip 33 of the fastener 3 abuts against the bottom surface 211a of the upper protrusion of the curved side floor 2a, and the inner vertical surface 3241 of the second locking strip of the fastener 3 abuts against the coordinate point 2232a3 of the outer vertical surface 2232a of the lower groove of the curved side floor 2a, so that the fastener 3 and the curved side floor 2a are locked and fixed in the vertical direction.

[0394] As shown in Figures 23-14, when the third lock body latch 3" and latch 3 are used together to lock adjacent curved side floor 2a and curved side floor 2b, the first locking strip 343 of the third lock body latch 3" and the second locking strip 324 of the latch 3 are on the same side. After the third lock body latch 3" is locked and fixed with the curved side floor 2b, the upper surface 3323 of the eleventh protrusion of the third lock body latch 3" abuts against the bottom surface 211b of the upper protrusion of the curved side floor 2b, and the upper surface of the second bottom plate 323 of the third lock body latch 3" abuts against the bottom surface 224b of the lower tenon of the curved side floor 2b. The inner surface 3431 of the first locking strip of the third lock body fastener 3" abuts against the coordinate point 2232a3 of the outer surface 2232a of the lower groove of the curved side floor 2a. It should be noted that the fastener 3 and the third lock body fastener 3" are spaced apart on the side of the curved side floor 2. The two sides of the inner surface 3241 of the second locking strip of the third lock body fastener 3" abut against the two coordinate points 2232bs3 and 2232bs4 of the outer surface 2232bs of the curved lower groove of the curved side floor 2b, so that the third lock body fastener 3" is locked and fixed with the curved side floor 2a and the curved side floor 2b in the horizontal direction.

[0395] As shown in Figure 23-12, after the locking fastener 3 is locked and fixed to the curved side floor 2a and the adjacent curved side floor 2b, due to the curved side floor 2b being curved, depending on the size of the curvature of the curved side floor 2b, the bottom surface 3121 of the first inclined pressure strip of the locking fastener 3 may not abut against the lower inclined surface 225b of the curved side floor 2b. Similarly, as shown in Figure 23-14, the bottom surface 3221 of the second inclined pressure strip of the locking fastener 3" with the third lock body may not abut against the lower inclined surface 225b of the curved side floor 2b. This usually makes it easy for the locking fastener 3 and the locking fastener 3" with the third lock body to rotate in the direction of arrow A16. Therefore, according to the formula... Calculations show that when the length of the locking element 3 is calculated to be L27, the second side surface 3228 of the vertical strips on both sides of the length direction of the locking element 3 abuts against the coordinate point 222b0 on the lower surface 222b of the floor 2b. At the same time, the eighth convex outer surface 3216 of the third lock body locking element 3" abuts against the two coordinate points 222as3 and 222as4 on the arc-shaped lower surface 222as of the arc-shaped side floor 2a. Such abutment and restraint measures make it difficult for the locking element 3 and the third lock body locking element 3" to rotate in the direction of arrow A16.

[0396] The fifth preferred embodiment of the present invention further describes the installation method and typical steps of the curved side floor 2.

[0397] First, cut the required length of the locking fastener 3 and the locking fastener 3 with a third lock body according to the curvature of the curved side floor 2.

[0398] The second step involves pre-hanging the third lock body fastener 3" with the curved side floor 2a. Specifically, refer to steps 4.1.1) to 4.1.4) of the fourth preferred embodiment of the present invention. As shown in Figures 23-16, this is a three-dimensional schematic diagram of the pre-hanging of the third lock body fastener 3" with the curved side floor 2a.

[0399] The third step involves pre-hanging the fastener 3 to the curved side floor 2a. The fastener 3 and the fastener with the third lock body 3" are spaced apart on the side of the curved side floor 2a. Specifically, refer to steps 4.2.1) to 4.2.1) of the fourth preferred embodiment of the present invention. As shown in Figures 23-17, it is a three-dimensional schematic diagram of the pre-hanging of the fastener 3 to the curved side floor 2a.

[0400] The fourth step involves locking and fixing the curved side floor 2b to the curved side floor 2a, which has been pre-attached with the locking fastener 3 and the third locking body fastener 3". Specifically, refer to steps 4.3.1) to 4.3.8) of the fourth preferred embodiment of the present invention. As shown in Figures 23-18, this is a three-dimensional schematic diagram of the installation steps of the locking fastener 3 and the third locking body fastener 3" with the curved side floor 2a and the curved side floor 2b.

[0401] The sixth preferred embodiment of the present invention:

[0402] One advantage of the use of the third locking body fastener 3" in this invention is that it enables the better implementation of the sixth preferred embodiment. Since flooring 2 in this field still uses joists or boards to install wooden flooring, as shown in Figure 24-1, flooring 2a and flooring 2b are laid on joists 48. The third locking body fastener 3" is pre-hung on one side of flooring 2a and then fixed to the joists 48 with screws. The joists 48 are typically made of composite materials such as wood and PVC, fixed to the ground. The third locking body fastener 3" is pre-hung on one side of flooring 2a and then fixed to the joists 48 with screws.

[0403] As shown in Figure 24-1, the first base plate 342 with the third lock body fastener 3” has an extension plate 3425 extending outward from the edge of the first locking strip 343 and the first base plate 342. The extension plate 3425 has a length distance L61 of about 3mm-10mm. As shown in Figure 14-1, the horizontal width L3 at the groove of the groove 223a of the floor 2 can be set to the following values: usually L3≥1.2mm, preferably 2.5mm≤L3≤5.5mm. In this sixth preferred embodiment, the horizontal width L3 at the groove of the groove 223 is preferably greater than 4mm, preferably 5mm≤L3≤9mm. This design requires that the screw tail 68 of the screw 67 that fixes the third lock body fastener 3” can fall into the groove 223 of the floor 2, so that the upper surface of the first base plate 342 with the third lock body fastener 3” can fit tightly with the bottom surface 224b of the tenon of the floor 2b, as shown in Figure 24-1.

[0404] The sixth preferred embodiment of the present invention further describes the implementation steps and methods as follows: First, joists 48 are laid on the ground according to the length of the floor 2. Under normal circumstances, as shown in Figure 24-2, the spacing L41 of the joists 48 is set within the range of 200mm≤L41≤400mm, and the upper surface of the joists 48 is basically flat. Usually, the joists 48 are fixed to the ground with nails or expansion screws.

[0405] The second step involves pre-hanging a third lock body fastener 3” according to the spacing L41 between the keels, so that the third lock body fastener 3” falls exactly on the keel, and fastening the third lock body fastener 3” to the keel 48 with screws, as shown in Figure 24-3. The pre-hanging of the third lock body fastener 3” to the floor 2 is described in steps 3.1.1) to 3.1.4) of the third preferred embodiment of the present invention.

[0406] The third step is to pre-hook the locking fastener 3 onto the floor 2a that has been laid on the keel in the space between the third locking body locking fastener 3”, as shown in Figures 24-4. The method of pre-hooking the locking fastener 3 into the floor 2a is to refer to steps 3.2.1) to 3.2.3) of the third preferred embodiment of the invention.

[0407] It should be further explained that, since this invention can be implemented to vertically lock and fix adjacent floorboards 2, as shown in Figures 14-11, floorboards 2a and 2c are already fixed to the ground, and floorboard 2b can be vertically installed between floorboards 2a and 2c. Therefore, as shown in Figures 24-5, floorboard 2a can be fixed to the joist 48, floorboard 2c can be fixed to the joist with a gap of the width of floorboard 2b, and then floorboard 2b can be locked and fixed. The advantage of this installation is that when there are wires and cables under the joist and subsequent adjustments are needed, floorboard 2b can be lifted with a suction cup without damaging floorboards 2a and 2c, and can be re-locked and fixed. Therefore, for installations such as sockets on floorboards 2 or wire and cable facilities between the joists 48 under floorboards 2, floorboards 2a and 2c can be fixed to the joist with a third locking body fastener 3" at intervals, and then floorboard 2b can be installed.

[0408] The fourth step is to vertically lock the floor 2b with the pre-attached third lock body fastener 3” vertically downwards to the adjacent floor 2a, as shown in Figure 24-5; or to vertically lock the floor 2b with the pre-attached third lock body fastener 3” vertically downwards to simultaneously lock the adjacent floor 2a and floor 2c, as shown in Figure 24-6.

[0409] Figure 24-7 shows a cross-sectional diagram of the locking fastener 3 and the third locking fastener 3" used together to lock and fix the floor 2b vertically between the adjacent floor 2a and floor 2c.

[0410] The seventh preferred embodiment of the present invention:

[0411] One of the advantages of using the third locking body fastener 3" in this invention is that it can better implement the seventh preferred embodiment. Since the use of flooring as wall panel has become a trend in the art, as shown in Figure 25-1, flooring 2 is wall panel 2". The third locking body fastener 3" is pre-hung on one side of the wall panel 2" and then fixed to the keel with screws. The keel is usually a wooden keel or a light steel keel 65 fixed to the wall 66.

[0412] Similar to the sixth preferred embodiment of the present invention, it is important to note in implementing the seventh preferred embodiment that, as shown in Figure 25-1, the first base plate 342 with the third lock body latch 3" has an extension plate 3425 extending outward from the edge of the first locking strip 343 at the connection point with the first base plate 342. The length of the extension plate 3425 is approximately 3mm-5mm. As shown in Figure 14-1, the horizontal width L3 at the groove opening of the groove 223a under the floor 2 can be set to the following values: typically L3 ≥ 1.2mm, preferably 2. 5mm≤L3≤5.5mm, in this seventh preferred embodiment, the horizontal width L3 at the groove opening of the lower groove 223" is preferably greater than 4mm, and preferably 5mm≤L3≤9mm; this design requirement allows the screw tail 68 of the screw 67 that is fixed with the third lock body fastener 3" to fall into the lower groove 223" of the wall panel 2", so that the upper surface of the second base plate 323 with the third lock body fastener 3" can fit tightly with the bottom surface 224 of the lower tenon of the wall panel 2", as shown in Figure 25-1.

[0413] Another scenario is shown in Figure 25-2, where the floor 2 is arranged on the wall as a wall panel. Typically, decorative lines 49 with decorative effects are provided between the two wall panels 2". The seventh preferred embodiment of the present invention provides a locking fastener 3 without a pry bar 33. The locking fastener 3 without a pry bar 33 is set as a locking fastener 3 without a pry bar.

[0414] The seventh preferred embodiment of the present invention provides a decorative strip 49 for use with the floor 2 as a wall panel 2". As shown in Figures 25-3, a decorative strip 491 protrudes from the upper end of the upper surface 212 of the decorative strip 49. The decorative strip 491 covers the adjacent wall panel 2", making the wall panel 2" more visually appealing. There are various styles of decorative strips, and Figures 25-3 show one of them in the seventh preferred embodiment of the present invention.

[0415] As shown in Figures 25-4 and 25-5, the third lock body fastener 3"a and the third lock body fastener 3"b are fixed at intervals on the sides of the wall panel 2"a and the wall panel 2"b, respectively. The fastener 3a is pre-hung at the side of the empty position between the third lock body fasteners 3"a, and the fastener 3b is pre-hung at the side of the empty position between the third lock body fasteners 3"b.

[0416] As shown in Figures 25-6, it can be seen from the second preferred embodiment of the present invention that after the first locking body 31 of the locking member 3 is locked and fixed with the floor 2, the locking member 3 can be restricted from flipping. Therefore, the decorative line 49 can be locked and fixed between the wall panel 2"a and the wall panel 2"b.

[0417] Secondly, the use of floor 2 as a stair tread is becoming increasingly common. The implementation scheme using wall panels is also applicable to the implementation scheme of floor 2 as a stair tread, as shown in Figure 25-7. Figure 25-8 is a partial enlarged schematic diagram of Figure 25-7.

[0418] Eighth preferred embodiment of the present invention:

[0419] The eighth preferred embodiment of the present invention is an embodiment for disassembling and replacing the floor 2 after the floor 2 and the fastener 3 are combined: the eighth preferred embodiment is implemented using the combination structure of the floor 2 and the fastener 3 of the second preferred embodiment. The disassembly method of the floor 2 and the fastener 3 is divided into the following two situations. The first situation is when the floor 2 is being installed, and if the newly installed floor 2 needs to be replaced due to factors such as texture and color, and the floor 2 can still be used in other areas to be installed, as shown in Figure 26-1, for example, there are already installed floor 2a, floor 2b, floor 2c and floor 2d. Suppose that the newly installed floor 2d needs to be disassembled, and floor 2d can continue to be used in other areas to be installed after disassembly. If the floor 2d is disassembled by rotating it in the direction of arrow A16 as shown in Figure 26-2, it is easy to damage the floor 2d. Because the upper end of the first lock body 31 is provided with a limiting measure to restrict the contact between the second abutting surface 3133 of the limiting lock head 313 and the fourth abutting surface 2022a in the upper groove 202a of the floor 2a, the disassembly may easily cause the connection between the outer vertical surface 2232d of the lower groove and the upper surface 2233d of the lower groove of the floor 2d to crack and fall off. The correct method is to place a thin piece C14 of about 2.5mm-5mm, such as a wooden piece as shown in Figure 26-3, under the bottom surface of the floor 2d, step on or press down the floor 2d, and then apply pressure to the front of the floor 2a, floor 2b, and floor 2c adjacent to the floor 2d as shown in Figure 26-1. Applying pressure is usually done by tapping the edge of the connection between the floor 2a, floor 2b, and floor 2c and the floor 2d on the front of the floor 2a, floor 2b, and floor 2c with a rubber hammer, etc., so that the floor 2d can be removed.

[0420] As shown in Figure 26-4, floor 2g is located between floor 2a, floor 2b, floor 2c, floor 2d, floor 2e, and floor 2f. Floors 2a, 2b, 2c, 2d, 2e, and 2f are also connected to other floor 2s. To disassemble floor 2g and replace it with a new floor 2g1, a method using a suction cup or similar tool to lift floor 2g has been tested. As shown in Figure 26-5, locking parts 3a and 3e rotate in the directions of arrows A16 and A13, respectively. As shown in Figure 26-5, locking part 3a rotates in the direction of arrow A16. Obviously, floor 2a and floor 2b connected to locking part 3a can be disassembled from floor 2g, and floor 2a and floor 2b will not be damaged when lifted by the suction cup. On the other side of floor 2g, adjacent to floor 2g, as shown in Figure 26-5, it can be seen that the second locking strip 3241e of locking part 3e follows the direction of arrow A1. 8. Pressure is applied to the outer surface 2232e of the groove in floor 2e. Therefore, lifting floor 2g upwards can easily cause the connection between the outer surface 2232e of the groove and the inner inclined surface 2235 of the groove to crack. Since the floor 2g to be replaced is damaged and usually not reused after disassembly, cutting is the preferred method to remove floor 2g. In the eighth preferred embodiment of the present invention, floor 2g is preferably cut and removed by a person skilled in the art using a cutting tool. The cutting method for removing flooring from the middle of an installed floor is already mature. The cutting and removal time for a single floor is usually about 5-20 minutes. The advantage of cutting the floor 2g to be removed is that it will not damage other flooring 2a, flooring 2b, flooring 2c, flooring 2d, flooring 2e and flooring 2f around flooring 2g. However, non-professionals cannot complete this independently. Removing flooring by cutting is something that installation and maintenance technicians in the art can do using existing technology. This eighth preferred embodiment will not describe it.

[0421] The method for replacing and inserting the new floor 2g1 in the eighth preferred embodiment is as follows: After taking out the floor 2g, as shown in Figure 26-6, lift the floor 2e appropriately and then lower the first lock body 31e of the fastener 3e, so that the fastener 3e is rotated in the direction of arrow A16 and the fastener 3e is taken out one by one. Lift the lever lock bar 33a of the fastener 3a on the floor 2a in the direction of arrow A16, and pre-hook the taken out fastener 3e and fastener 3a on the floor 2e and the floor 2a respectively, as shown in Figure 26-7.

[0422] As shown in Figure 26-8, place the new floor 2g1 between the adjacent floor 2a and floor 2e, so that the lower groove 202g of the floor 2g1 is hooked on the second clip 324a of the fastener 3a and the second clip 324e of the fastener 3e. Press down on the front of the floor 2g1, so that the fastener 3a rotates in the direction of arrow A13 and the fastener 3e rotates in the direction of arrow A16. For specific implementation steps, refer to steps 2.2.1) to 2.2.6) in the second preferred embodiment to complete the replacement of the floor 2g1. Figure 26-9 shows a schematic diagram when the replacement of the floor 2g1 is completed.

[0423] The applicant has developed and applied for utility model patents multiple times since November 14, 2019, including application number CN201921965030.0, utility model patent application number CN201922056195.2 filed on November 25, 2019, and utility model patent application number CN202222418527.9 filed on September 13, 2022. From these publicly available patent documents, it is clear that the applicant's consistent insistence on vertical installation of adjacent floorboards is aimed at achieving this goal, and the difficulty is also considerable. This is because it requires not only maintaining a vertical installation method to secure the adjacent floorboards to the locking mechanism, but also further improving the locking strength of the floorboard surface in the vertical direction to approach that of a flat surface. The locking strength of the floorboards in the vertical direction on the floor surface is even consistent with that of the floorboards themselves. While meeting the requirements for the horizontal locking strength of adjacent floorboard sides and the vertical locking strength of the floorboard front, achieving vertical installation of adjacent floorboards is of great significance in this field. It allows designed products to be free from limitations in production, installation, and subsequent use and maintenance, greatly promoting the development of more personalized products in the industry, significantly improving the production and installation efficiency of various products, and further driving new opportunities for equipment upgrades in the industry. As can be seen from the ninth preferred embodiment of this invention, the field has evolved from initially using the I-shaped installation method for long strip floorboards to the increasing popularity of various irregularly shaped products in recent years, especially straight irregularly shaped products. Some examples of these in the ninth preferred embodiment are listed below:

[0424] Ninth preferred embodiment of the present invention:

[0425] Figure 27-1 shows an installation diagram of the I-shaped installation method of the long strip floor 2 of the present invention; Figure 27-2 shows a herringbone installation diagram of the long strip floor 2 of the present invention; Figure 27-3 shows an installation diagram of the herringbone floor 2 of the present invention.

[0426] In this ninth preferred embodiment, a hexagonal floor installation diagram as shown in Figure 27-4 is provided. Above the already installed and connected floor 2a, floor 2b, and floor 2c, there is a floor 2d to be installed. The upper surfaces 212d1, 212d2, and 212d3 of floor 2d are all on the same vertical extension plane as the upper surfaces 212a1, 212b1, and 212c1 of floor 2a, floor 2b, and floor 2c, respectively. Since the technical solution of the present invention does not require tilting or horizontal movement before pressing, it only requires pressing floor 2d vertically to achieve simultaneous locking and fixing of three sides. Therefore, the pattern shown in Figure 27-5 can also be easily implemented using the technical solution of the present invention.

[0427] As shown in Figure 27-6, there are four commonly used parquet flooring patterns in this field. As shown in Figure 27-6, I consists of 27 small pieces of various shapes connected together to form a square floor. As shown in Figure 27-6, II consists of 16 small pieces of various shapes connected together to form a square floor. As shown in Figure 27-6, III consists of 24 small pieces of various shapes connected together to form a square floor. As shown in Figure 27-6, IV consists of 16 small pieces of various shapes connected together to form a square floor. Existing technology usually uses glue to connect the small pieces of various shapes together and then uses a press to assemble them. The process is cumbersome, inefficient, and very costly. However, using the technology of this invention, the various shapes of the flooring pieces 2" can be connected together to form a square floor 2 through the locking fastener 3, which can quickly complete the production of parquet flooring without the use of glue and a press.

[0428] Tenth preferred embodiment of the present invention:

[0429] The tenth preferred embodiment of the present invention provides a locking member 3 for adding a retaining strip 80 between adjacent floorboards 2. As shown in Figure 28-1, a toothed U-shaped body 70 replaces the vertical strip 321 of the locking member 3. A U-shaped groove 702 is provided in the middle part of the toothed U-shaped body 70, and toothed protrusions 701 are respectively provided on both sides of the inner wall of the U-shaped groove 702. The locking member 3 of the toothed U-shaped body 70 is a U-shaped toothed locking member 3.

[0430] Furthermore, as shown in Figure 28-2, the vertical bar 321 of the third lock body lock fastener 3" used in conjunction with the U-shaped rack and pinion lock fastener 3 is also replaced by the rack and pinion U-shaped body 70, and the third lock body lock fastener 3" with rack and pinion U-shaped body 70 is set as the U-shaped rack and pinion third lock body lock fastener 3".

[0431] As shown in Figure 28-3, a fastening strip 80 has a strip-shaped fastening strip 801 at its upper end and a lower toothed strip 802 at the center of its lower end.

[0432] As shown in Figure 28-4, an elastic clip 90 has an upward-opening upper toothed groove 901 at the vertical center line of its upper end and a lower toothed protrusion 902 at the vertical center line of its lower end. The lower toothed protrusion 902 of the elastic clip 90 can be embedded in the U-shaped groove 702 of the U-shaped toothed locking member 3 as shown in Figure 28-1. The lower toothed bar 802 of the buckle bar 80 can be embedded in the upper toothed groove 901 of the elastic clip 90. Elastic clip inclined abutment surfaces 903 are symmetrically provided on both sides of the upper end of the lower toothed protrusion 902. When the lower toothed protrusion 902 of the elastic clip 90 is embedded in the U-shaped groove 702 of the U-shaped toothed locking member 3, the inclined abutment surfaces 903 can respectively abut against the upper surface of the first inclined pressure bar 312 and the upper surface of the second inclined pressure bar 322 of the U-shaped toothed locking member 3.

[0433] The installation steps of the tenth preferred embodiment of the present invention are as follows:

[0434] The first step, as shown in Figures 28-5, is to pre-hook the U-shaped rack and pinion fastener 3 into the first groove 20a of the floor 2a. For specific implementation methods and steps, refer to steps 2.1.1) to 2.1.4) in the second preferred embodiment of the present invention.

[0435] The second step, as shown in Figures 28-6, is to lock and fix floor 2b and floor 2a together using a U-shaped toothed fastener 3. For specific implementation methods and steps, refer to steps 2.2.1) to 2.2.6) in the second preferred embodiment of the present invention.

[0436] The third step, as shown in Figure 28-7, is to press the elastic clip 90 downward into the gap between the floor 2a and the floor 2b and insert it into the toothed protrusions 701 on both sides of the inner wall of the U-shaped groove 702 of the U-shaped toothed fastener 3. Since the material of the elastic clip 90 is elastic, the lower toothed protrusion 902 of the elastic clip 90 can engage with the toothed protrusions 701 of the U-shaped toothed fastener 3, so that the inclined abutment surface 903 of the elastic clip can abut against the upper surface of the first inclined pressure strip 312 and the upper surface of the second inclined pressure strip 322 of the U-shaped toothed fastener 3, as shown in Figure 28-8.

[0437] Fourth step, as shown in Figure 28-8, press the fastening strip 80 downward into the upper toothed groove 901 at the upper end of the elastic clip 90. Since the material of the elastic clip 90 is elastic, the lower toothed strip 802 at the lower end of the fastening strip 80 can be embedded in the upper toothed groove 901 at the upper end of the elastic clip 90, thus completing the installation of the fastening strip 80 between the floor 2a and the floor 2b.

[0438] As shown in Figures 28-9, if it is necessary to use the third lock body fastener 3" with U-shaped rack and pinion as shown in Figure 28-2 to lock the floor 2a and floor 2b together with the U-shaped rack and pinion fastener 3, the specific implementation steps and methods can be referred to the third preferred embodiment.

[0439] In a further embodiment of the present invention, the floor 2 of the present invention also includes a U-shaped toothed locking fastener 3.

[0440] The present invention further includes a U-shaped toothed third lock body fastener 3" in the floor 2 of the present invention.

[0441] The present invention further includes a snap-fit ​​strip 80 and an elastic clip 90 in the floor 2.

[0442] The technical solution of the tenth preferred embodiment of the present invention can be implemented by replacing the locking member 3 with a U-shaped toothed locking member 3 to add a snap-on strip 80, which can further expand the personalized customization needs. In addition, the strip-shaped snap-on strip 801 of the snap-on strip 80 can cover the front of the adjacent floor 2a and floor 2b, as shown in Figures 28-10.

[0443] In this invention, as shown in Figure 30, floor 2a and floor 2b are connected in the locking fastener 3. Industrial applicability

[0444] This invention has significant industrial applicability:

[0445] First, the materials used to make the flooring are widely applicable. For wood materials, it is suitable for single-layer wood flooring, multi-layer wood flooring, two-layer wood flooring, and three-layer wood flooring. It is also suitable for wood-based flooring made of high-density fiberboard, medium-density fiberboard, particleboard, etc. The middle layer material can also be replaced with materials such as polymer-based core, which contains thermoplastic or thermosetting materials. Thermoplastic materials can include polyvinyl chloride plastic and other materials with similar elasticity and toughness to wood.

[0446] In the flooring production process, because the first groove and the lower tenon are uniformly opened on the side, the tools required for the grooving process are simple, and the grooving tools are easy and efficient to adjust. This is especially true for the production and processing of irregularly shaped products such as herringbone flooring and fishbone flooring.

[0447] Since the locking technology of the present invention is applicable to the grooving equipment of all existing flooring manufacturers in the field, especially through the effective implementation of the fourth preferred embodiment, the locking technology solution of the present invention can be applied to the ordinary four-sided planer equipment of relevant manufacturers in the field.

[0448] Secondly, the range of materi...

Claims

1. A floor fixing assembly comprising a floor and a locking piece, the floor (2) is provided with a first groove (20) and a lower tongue (22), the upper end of the first groove (20) is provided with an upper convex body (21), the lower surface of the upper convex body (21) is provided with an upper convex body bottom surface (211), the outer end surface of the upper convex body (21) is provided with an upper vertical surface (212), the lower surface of the lower tongue (22) is provided with a lower tongue bottom surface (224), the outer end surface of the lower tongue (22) is provided with a lower vertical surface (222), and the bottom wall of the inner side of the first groove (20) is provided with a first groove bottom side wall (201), characterized in that, The first groove (20) further comprises an open downward upper groove (202) opened on the upper convex bottom surface (211), and the lower convex tenon (22) further comprises an open downward lower groove (223) opened on the lower convex tenon bottom surface (224); The lock piece (3) comprises a first lock body (31), a second lock body (32) and a lock bar (33) connected together, the first lock body (31) and the lock bar (33) are respectively connected to opposite side edges of the upper end of the second lock body (32), and the lock piece (3) is in a strip shape. The first groove (20) is horizontally arranged on the side surface of the floor (2), the first groove (20) and the lower convex tenon (22) are arranged on the same side surface of the floor (2), the first groove (20) is arranged on the upper end of the lower convex tenon (22), the lower surface of the first groove (20) is provided as a first groove bottom surface (203), the upper surface of the lower convex tenon (22) is provided as a lower convex tenon upper surface (221), the first groove bottom surface (203) and the lower convex tenon upper surface (221) are on the same plane, that is, the first groove bottom surface (203) and the lower convex tenon upper surface (221) overlap, and the lower convex tenon (22) horizontally extends inward to the inside of the upper vertical surface (212), that is, extends towards the center and / or position of the floor (2). The floor (2) further comprises a lower undercut portion (230), which is arranged in the space between the lower convex tenon bottom surface (224) and the bottom surface of the floor (2) in the vertical direction and / or position. The first lock body (31) is embedded in the first groove (20) of the floor (2), the lock bar (33) is embedded in the first groove (20) of the adjacent floor (2), the lower convex tenon (22) of the floor (2) connected with the lock bar (33) is embedded in the second lock body (32), the adjacent floor (2) is simultaneously locked and fixed in the vertical direction of the front surface of the floor and the horizontal direction of the side surface of the floor, and the front surfaces of the adjacent floor (2) are flush.

2. The floor fastening assembly of claim 1, wherein, The first lock body (31) of the lock piece (3) comprises a first convex tenon (311), a first inclined pressing strip (312) and a limiting lock head (313), and the second lock body (32) comprises a vertical strip (321), a second inclined pressing strip (322), a second bottom plate (323) and a second clamping strip (324).

3. The floor fastening assembly of claim 2, wherein, The lower end edge of the vertical strip (321) of the lock catch (2) placed vertically is connected with the side edge of the second bottom plate (323) placed horizontally in L shape, the second clamping strip (324) is connected with the upper surface of the other side edge of the second bottom plate (323), the second inclined pressing strip (322) is placed obliquely, the bottom surface of the second inclined pressing strip (322) is provided as a second inclined pressing strip bottom surface (3221), the upper end edge of the vertical strip (321) is connected with the lower end edge of the second inclined pressing strip (322), and the second inclined pressing strip (322) and the second bottom plate (323) are on the same side in the horizontal direction and / or position with the vertical strip (321) as the reference; the first inclined pressing strip (312) is an obliquely placed strip-shaped body, the bottom surface of the first inclined pressing strip (312) is provided as a first inclined pressing strip bottom surface (3121), the lower end edge of the first inclined pressing strip (312) is connected with the upper end edge of the vertical strip (321), the first inclined pressing strip (312) and the second inclined pressing strip (322) are connected together in V shape, the first inclined pressing strip (312), the second inclined pressing strip (322) and the vertical strip (321) are connected together in Y shape, the upper surface of the first tenon (311) is provided as a first tenon upper surface (3111), the bottom surface of the first tenon (311) is provided as a first tenon bottom surface (3112), one side surface of the first tenon (311) is provided as a first tenon inner side surface (3113), the side surface opposite to the first tenon inner side surface (3113) is provided as a first tenon outer side surface (3114), and the bottom side edge of the first tenon inner side surface (3113) is connected with the upper end edge of the first inclined pressing strip (312); the first inclined pressing strip bottom surface (3121), the second inclined pressing strip bottom surface (3221) and the first tenon bottom surface (3112) are all clamping surfaces; The push piece lock strip (33) is an obliquely placed strip-shaped body, the lower end edge of the push piece lock strip (33) and the upper end edge of the second inclined pressing strip (322) are connected together in V shape, the push piece lock strip (33) and the second inclined pressing strip (322) are connected in V shape to form an obtuse angle, and the obtuse angle (A1) formed by the push piece lock strip (33) and the second inclined pressing strip (322) is directed towards the first tenon (311); The second inclined pressing strip (322), the vertical strip (321), the second bottom plate (323) and the second clamping strip (324) are connected together to form a second recess (325).

4. The floor fastening assembly of claim 3, wherein, The first tenon bottom surface (3112) and the lower end side edge of the first tenon outer side surface (3114) are connected to form a convex strip (314), and the side edge of the first tenon upper surface (3111) and the upper side edge of the first tenon inner side surface (3113) are connected to form a second convex strip (315).

5. The floor securing assembly of claim 2, wherein, The second clamping strip (324) comprises a second clamping strip inner vertical surface (3241), a second clamping strip upper surface (3242) and a second clamping strip outer surface (3243) arranged in sequence in the horizontal direction and / or position, the second clamping strip inner vertical surface (3241) faces the vertical strip (321), the lower side of the second clamping strip inner vertical surface (3241) is connected to the upper surface of the second bottom plate (323), the upper side of the second clamping strip inner vertical surface (3241) is connected to one side edge of the second clamping strip upper surface (3242), the other side edge of the second clamping strip upper surface (3242) is connected to the upper side of the second clamping strip outer surface (3243), the lower side of the second clamping strip outer surface (3243) is connected to the upper surface edge of the second bottom plate (323), and the second clamping strip inner vertical surface (3241) is a clamping surface.

6. The floor securing assembly of claim 1, wherein, The dial piece lock bar (33) is an obliquely placed strip-shaped body, the surface of the dial piece lock bar (33) facing the direction of the first lock body (31) is provided as a dial piece lock bar upper surface (331), the other side of the dial piece lock bar (33) relative to the dial piece lock bar upper surface (331) is provided as a dial piece lock bar bottom surface (332), and the upper end side surface of the dial piece lock bar (33) is provided as a dial piece lock bar upper guide surface (333), which is an arc surface.

7. The floor securing assembly of claim 6, wherein, A slope is formed between the dial piece lock bar upper surface (331) and the upper side of the dial piece lock bar upper guide surface (333) to form a dial piece lock bar abutting surface (334), which is a clamping surface, and a slope is formed between the dial piece lock bar bottom surface (332) and the lower side of the dial piece lock bar upper guide surface (333) to form a dial piece lock bar lower guide surface (335).

8. The floor fastening assembly according to claim 3 or 6, characterized in that The dial piece lock bar bottom surface (332) and the second inclined pressing strip bottom surface (3221) are connected to form a slope as a third guide surface (336), the upper side of the third guide surface (336) and the lower side of the dial piece lock bar bottom surface (332) are connected to form a convex strip as a ninth convex strip (337), and the lower side of the third guide surface (336) and the upper side of the second inclined pressing strip bottom surface (3221) are connected to form a convex strip as a tenth convex strip (338).

9. The floor securing assembly of claim 2, wherein, The limiting lock head (313) comprises a first abutting surface (3131), a limiting lock head inner convex strip (3135) and a limiting lock head upper surface (3132), both the first abutting surface (3131) and the limiting lock head upper surface (3132) are clamping surfaces.

10. The floor fastening assembly according to claim 2, 3 or 9, wherein, The limiting lock head (313) protrudes on the first tenon upper surface (3111), the first abutting surface (3131) lower side is connected to the first tenon upper surface (3111), the first abutting surface (3131) upper side is connected to the limiting lock head upper surface (3132) one side to form a convex strip as the limiting lock head inner convex strip (3135), the limiting lock head upper surface (3132) other side extends downward and inward in an arc shape and is connected to the first tenon outer side (3114) upper side, and the limiting lock head (313) partially protrudes on the first tenon outer side (3114).

11. The floor securing assembly of claim 1, wherein: The upper convex body bottom surface (211) outer side and the upper vertical surface (212) lower side are connected to form an inclined surface as the upper inclined surface (213), the lower tenon upper surface (221) outer side and the lower vertical surface (222) upper side are connected to form an inclined surface as the lower inclined surface (225), the lower inclined surface (225) upper side and the lower tenon upper surface (221) outer side are connected to form a convex strip as the fourth convex strip (226), and the lower inclined surface (225) and the lower vertical surface (222) are connected to form a convex strip as the sixth convex strip (2251); the lower tenon bottom surface (224) and the lower vertical surface (222) are connected to form an inclined surface as the lower tenon bottom inclined surface (2249). ​ 12. The floor securing assembly of claim 1, wherein, The first recess bottom side wall (201) is horizontally and inwardly provided with an elastic adjusting recess (204), the elastic adjusting recess (204) bottom side inner wall is set as the elastic adjusting recess bottom side wall (2041), the elastic adjusting recess (204) upper surface and the first recess bottom side wall (201) are connected to form a convex strip as the first recess inner convex strip (2014), the elastic adjusting recess (204) upper surface and the elastic adjusting recess bottom side wall (2041) are connected to form an inclined surface as the elastic adjusting recess upper inclined surface (2042), and the elastic adjusting recess (204) lower surface and the elastic adjusting recess bottom side wall (2041) are connected to form an inclined surface as the elastic adjusting recess lower inclined surface (2043).

13. The floor securing assembly of claim 1, wherein, The upper recess (202) comprises a third abutting surface (2021), a fourth abutting surface (2022), an upper recess upper surface (2023), an upper recess outer convex strip (2024), and an upper recess inner convex strip (2025).

14. The floor fastening assembly according to claim 1 or 13, wherein The third abutting surface (2021) extends upward and intersects with the upward extension surface of the fourth abutting surface (2022), and the intersection forms a straight line. The upper groove upper surface (2023) can be a plane and / or an arc surface, and the upper groove upper surface (2023) can be parallel to the front surface of the floor (2). The lower side of the third abutting surface (2021) is connected to the edge of the upper convex body bottom surface (211) to form a convex strip, which is the upper groove outer convex strip (2024). The upper side of the third abutting surface (2021) is connected to one side of the upper groove upper surface (2023). The other side of the upper groove upper surface (2023) is connected to the upper side of the fourth abutting surface (2022). The lower side of the fourth abutting surface (2022) is connected to the edge of the upper convex body bottom surface (211) to form a convex strip, which is the upper groove inner convex strip (2025).

15. The floor securing assembly of claim 1, wherein, With the opening of the upper groove (202) as a reference, in the horizontal direction and / or position, the part of the upper convex body bottom surface (211) between the upper groove (202) and the lower side of the upper inclined surface (213) is set as the upper convex body outer bottom surface (2112). The part of the upper convex body bottom surface (211) between the upper groove (202) and the first groove bottom side wall (201) is set as the upper convex body inner bottom surface (2113).

16. The floor securing assembly of claim 1, wherein, The lower groove (223) is sequentially provided with a lower groove guide surface (2231), a lower groove outer vertical surface (2232), a lower groove inner inclined surface (2235), a lower groove upper surface (2233), and a lower groove inner vertical surface (2234) in the horizontal direction and / or position from one side of the lower vertical surface (222) to the direction of the first groove bottom side wall (201).

17. The floor fastening assembly according to claim 1 or 16, wherein The lower side of the lower groove outer vertical surface (2232) is connected to the lower side of the lower convex tongue bottom surface (224) to form an inclined surface, which is the lower groove guide surface (2231). The upper side of the lower groove outer vertical surface (2232) is connected to one side of the lower groove upper surface (2233) to form an inclined surface, which is the lower groove inner inclined surface (2235). The other side of the lower groove upper surface (2233) is connected to the upper end side of the lower groove inner vertical surface (2234). The lower side of the lower groove inner vertical surface (2234) is connected to the side of the lower convex tongue bottom surface (224).

18. The floor anchoring assembly according to claim 1, 2, 4, 6, 13 or 15, wherein, The typical steps of the lock catch (3) entering the first groove (20) of the floor (2) for pre-hanging installation are as follows: 1.1.1), tilt the lock piece (3) at an angle, with the second protrusion (315) resting on the upper protrusion outer bottom surface (2112) of the floor (2), move the first lock body (31) towards the first recess bottom sidewall (201), the first lock body (31) moves along the lower protrusion upper surface (221) towards the first recess bottom sidewall (201), the second protrusion (315) slides through the upper recess outer protrusion (2024) into the upper recess (202), the bottom of the rotating protrusion (314) rests on the lower protrusion upper surface (221); 1.1.2), rotate the lock piece (3) to adjust the tilt angle of the lock piece (3), to reduce the height of the second lock body (32) in the vertical direction, in the vertical direction and / or position, the upper end surface of the second protrusion (315) protrudes upwards in the upper recess (202) beyond the upper protrusion bottom surface (211); 1.1.3), rotate around the rotating protrusion (314) in the first recess (20), i.e. reduce the height of one side of the second lock body (32) in the vertical direction, so that the highest end surface of the limiting lock head (313) does not exceed the upper protrusion bottom surface (211), then move the first lock body (31) along the lower protrusion upper surface (221) towards the first recess bottom sidewall (201), then make the limiting lock head (313) slide through the upper recess inner protrusion (2025), then make the limiting lock head (313) rest on the upper protrusion inner bottom surface (2113), and the upper surface of the lock piece lock bar (331) rests on the upper vertical surface (212), the pre-hanging of the floor (2) and the lock piece (3) is completed.

19. The floor anchoring assembly according to claim 1, wherein, The floor (2) further comprises the lock piece (3).

20. The floor anchoring assembly according to claim 1, 2, 6, 9, 15 or 19, wherein, At least one lock piece (3) is connected to at least one side of the floor (2), and the opposite side of the floor on which the lock piece (3) has been provided is not provided with the lock piece (3); the first lock body (31) of the lock piece (3) is arranged in the first recess (20) of the floor (2), the limiting lock head inner protrusion (3135) of the lock piece (3) rests on the upper protrusion inner bottom surface (2113), the upper surface of the lock piece lock bar (331) rests on the upper vertical surface (212), and the second bottom plate (323), the second clamping strip (324), and the lock piece lock bar (33) of the second lock body (32) all protrude outside the upper vertical surface (212) of the floor (2).

21. The floor anchoring assembly of claims 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 15, or 16, wherein, The typical installation steps of adjacent floors (2) and lock pieces (3) are as follows: 1.2.1), the floor (2) is placed on the installation surface, the second bottom plate (323) and the second clamping strip (324) of the locking piece (3) of the floor (2) protrude outside the upper vertical surface (212a) of the floor (2a), the floor (2b) is lifted to a certain height, and the lower groove (223b) of the floor (2b) without the pre-hung locking piece (3) is hung into the second clamping strip (324) of the floor (2a) on one side of the floor (2a) with the locking piece (3); 1.2.2), the floor (2b) is pressed downward, the first lock body (31) rotates in the first groove (20a) around the rotating convex strip (314) and the lower convex tenon upper surface (221a) support point, the limiting lock head inner convex strip (3135) extrudes the upper convex body inner bottom surface (2025a) upward, because the upper convex body (21a) and the lower convex tenon (22a) have a wedge effect, when subjected to an external force, the upper convex body (21a) and the lower convex tenon (22a) can be opened to a certain distance, so that the limiting lock head (313) slides through the upper groove inner convex strip (2025a) and enters the upper groove (202a), in the rotating process of the first lock body (31), the first inclined pressing strip bottom surface (3121) abuts against the fourth convex strip (226a) and slides downward along the fourth convex strip (226a), so that the first lock body (31) moves along the lower convex tenon upper surface (221a) to the side of the slot of the first groove (20a); 1.2.3), in the rotating process of the first lock body (31), when the limiting lock head (313) enters the upper groove (202), the second convex strip (315) abuts against the third abutting surface (2021a), the upper convex body (21a) and the lower convex tenon (22a) have a wedge effect, so that when subjected to an external force, the upper convex body (21a) and the lower convex tenon (22a) are opened to a certain distance, so that the second convex strip (315) slides through the upper groove outer convex strip (2112a), the upper convex body (21a) and the lower convex tenon (22a) close due to the loss of external force and recover to the state before opening, the limiting lock head upper surface (3132), the first abutting surface (3131) and the first tenon upper surface (3111) abut against the upper groove upper surface (2023a), the third abutting surface (2021a) and the upper convex body outer bottom surface (2112a) respectively, the first tenon bottom surface (3112) abuts against the lower convex tenon upper surface (221a), the first inclined pressing strip bottom surface (3121) abuts against the lower inclined surface (225a), and the locking and fixing of the first lock body (31) and the floor (2) is completed; 1.2.4), while the first lock body (31) rotates, the second lock body (32) and the dial lock bar (33) rotate around the second clamping strip (324) in the lower groove (223b), so that the upper guide surface (333) of the dial lock bar abuts against the outer bottom surface (2112b) of the upper convex body (21b), the upper convex body (21b) and the lower convex tenon (22b) have a wedge effect, so that a certain distance is opened between the upper convex body (21b) and the lower convex tenon (22b) under the action of an external force, so that the upper guide surface (333) of the dial lock bar slides through the outer convex strip (2112b) of the upper groove and enters the upper groove (202b), the upper convex body (21b) and the lower convex tenon (22b) close and recover to the state before opening due to the loss of external force, so that the dial lock bar abutting surface (334) abuts against the third abutting surface (2021b), and the lower convex tenon (22b) of the floor (2b) connected with the dial lock bar (33) is embedded in the second groove (325) of the second lock body (32), the second inclined pressing strip bottom surface (3221) abuts against the lower inclined surface (225b), the lower convex tenon bottom surface (224b) abuts against the upper surface of the second bottom plate (323), and the second clamping strip inner vertical surface (3241) abuts against the lower groove outer vertical surface (2232b), so that the second lock body (32) and the dial lock bar (33) are locked and fixed with the floor (2) to complete the locking and fixing. The adjacent floor (2) is locked and fixed together by the first lock body (31), the second lock body (32) and the dial lock bar (33) of the lock buckle (3), and the front surface and the bottom surface of the adjacent floor (2) are flush.

22. The floor securing assembly of claim 2, wherein, The limiting lock head (313) further comprises a second abutting surface (3133), which is a clamping surface, and the second abutting surface (3133) faces the outer side of the first lock body (31).

23. A floor fastening assembly according to claim 2, 3, 9 or 22, wherein, The limiting lock head (313) protrudes on the upper surface (3111) of the first tenon between the outer side surface (3114) and the inner side surface (3113) of the first tenon, the upper side of the second abutting surface (3133) is connected to one side of the limiting lock head upper surface (3132), the lower side of the second abutting surface (3133) is connected to the upper side of the first tenon outer side surface (3114) to form an arc-shaped groove as a limiting lock head groove (3134); the upward extension surface of the second abutting surface (3133) intersects with the upward extension surface of the first abutting surface (3131), and the intersection is a straight line.

24. The floor anchoring assembly according to claim 1, wherein, The first lock body (31) further comprises a third convex strip (3115).

25. The floor securing assembly of claim 3, 9 or 24, wherein, The lower end side of the first abutting surface (3131) is connected to the upper end side of the first tenon inner side surface (3113) to form a convex strip as the third convex strip (3115).

26. The floor anchoring assembly according to claim 1, wherein, The upper groove (202) further comprises a third groove (205), which is an open groove inclined to the direction of the first groove (20) opening, and is arranged between the upper groove (202) and the first groove bottom side wall (201) in the horizontal direction and / or position.

27. The floor securing assembly of claim 26, wherein, The third groove (205) comprises a third groove abutting surface (2051), a third groove bottom surface (2052) and a third groove inclined surface (2053).

28. The floor anchoring assembly according to claim 1 or 27, wherein, The third groove abutting surface (2051) is an inclined surface, which is inclined downward to the outside of the first groove (20) opening.

29. The floor anchoring assembly according to claim 1, wherein, The upper groove (202) further comprises an upper undercut surface (207) and a first protrusion (206).

30. The floor securing assembly of claim 12, 13, 27, or 29, wherein, The lower side of the fourth abutting surface (2022) and the lower side of the third groove abutting surface (2051) are connected to form a plane, which is the upper undercut surface (207), and the third groove abutting surface (2051) and the upper undercut surface (207) are connected to form a protrusion, which is a pre-hanging limiting protrusion (2055); one side of the upper undercut surface (207) and the lower side of the fourth abutting surface (2022) are connected to form a protrusion, which is the first protrusion (206), and the third groove inclined surface (2053) and the edge of the upper protrusion bottom surface (211) are connected to form a protrusion, which is a third groove inner protrusion (2054), and the third groove inner protrusion (2054) and the first groove bottom side wall (201) at the upper end of the first groove inner protrusion (2014) are connected to form an inclined surface, which is a first groove upper inclined surface 2015.

31. The floor anchoring assembly according to claim 2, wherein, The opposite two side surfaces of the vertical bar (321) of the lock catch (3) are respectively provided with a vertical bar first side surface (3227) and a vertical bar second side surface (3228), and the vertical bar first side surface (3227) faces the second clamping bar (324).

32. The floor securing assembly of claim 31, wherein, The upper end of the vertical bar first side surface (3227) of the lock catch (3) is provided with a seventh protrusion (3211), and the vertical bar second side surface (3228) is provided with an eighth protrusion (3212).

33. The floor securing assembly of claim 32, wherein, The seventh protrusion (3211) is sequentially provided with a seventh protrusion outer surface (3213), a seventh protrusion lower protrusion (3215) and a seventh protrusion lower surface (3217) from top to bottom in the vertical direction, and the eighth protrusion (3212) is sequentially provided with an eighth protrusion upper protrusion (3214) and an eighth protrusion outer surface (3216) from top to bottom in the vertical direction.

34. The floor securing assembly of claim 33, wherein, The seventh protrusion outer surface (3213) is parallel to the eighth protrusion outer surface (3216), the distance D6 between the upper side of the seventh protrusion lower protrusion (3215) and the lower side of the eighth protrusion upper protrusion (3214) is greater than the vertical distance L13 between the seventh protrusion outer surface (3213) and the eighth protrusion outer surface (3216).

35. The floor anchoring assembly according to claim 3, wherein, The second groove (325) further comprises a second groove inner cavity (3251).

36. The floor anchoring assembly of claims 2, 3, 33 or 35, wherein, The second recess inner cavity (3251) is in the space of the vertical downward projection of the seventh convex body lower surface (3217) on the upper surface projection area of the second bottom plate (323), and the second recess inner cavity (3251) is in the second recess (325).

37. The floor anchoring assembly according to claims 1, 2, 3 or 33, wherein, When the second bottom plate (323) is horizontally placed, the first inclined pressing strip bottom surface (3121) and the second inclined pressing strip bottom surface (3221) are arranged on the lock catch (3) in a mirror image relationship with the vertical center line between the seventh convex body outer facade (3213) and the eighth convex body outer facade (3216) as the center line, when the side edges of the floor (2) are straight lines, and the first inclined pressing strip bottom surface (3121) and the second inclined pressing strip bottom surface (3221) are arranged on the lock catch (3) in a non-mirror image relationship when the side edges of the floor (2) are arc-shaped side edges, and the first inclined pressing strip bottom surface (3121) is higher than the second inclined pressing strip bottom surface (3221) in the vertical direction and / or position.

38. The floor anchoring assembly according to claim 1, wherein, The lower convex tenon (22) further comprises a third inclined surface (227), a third inclined surface upper ridge (228), and a third inclined surface lower ridge (229).

39. The floor anchoring assembly according to claim 1, 11 or 38, wherein, The lower inclined surface (225) and the lower vertical surface (222) are connected to form a third inclined surface (227), the upper side of the third inclined surface (227) is connected to the lower side of the lower inclined surface (225) to form a third inclined surface upper ridge (228), and the lower side of the third inclined surface (225) is connected to the upper side of the lower vertical surface (222) to form a third inclined surface lower ridge (229).

40. The floor anchoring assembly according to claim 1, wherein, The third lock body (34) replaces the first lock body (31) of the lock catch (3), and the lock catch (3) without the first lock body (31) is provided as a third lock body lock catch (3").

41. The floor anchoring assembly according to claim 40, wherein, The third lock body (34) comprises a first bottom plate (342) and a first clamping strip (343).

42. The floor anchoring assembly according to claim 2 or 41, wherein, The first bottom plate (342) is horizontally placed, and one side edge of the first bottom plate (342) is connected to the outer side edge of the connection between the vertical strip (321) and the second bottom plate (323). With the vertical strip (321) as a reference, the first bottom plate (342) is on one side of the first convex tenon (311) in the horizontal direction and / or position, and the first clamping strip (343) is connected to the other side edge of the upper surface of the first bottom plate (342).

43. The floor anchoring assembly according to claim 2 or 41, wherein, The upper surface of the first bottom plate (342) is on the same plane as the upper surface of the second bottom plate (323), and the vertical thickness of the first bottom plate (342) is the same as the vertical thickness of the second bottom plate (323), that is, the bottom surface of the first bottom plate (342) is on the same plane as the bottom surface of the second bottom plate (323).

44. The floor anchoring assembly according to claim 41, wherein, In the horizontal direction and / or position, the first clamping strip (343) is sequentially provided with a first clamping strip inner vertical surface (3431), a first clamping strip upper inclined surface (3432), a first clamping strip upper surface (3433), and a first clamping strip outer surface (3434).

45. The floor anchoring assembly according to claim 2, 41 or 44, wherein, In the horizontal direction, the first clamping strip inner vertical surface (3431) is connected to the upper surface of the first bottom plate (342) at the lower end side, and the upper side of the first clamping strip inner vertical surface (3431) is connected to the upper side of the first clamping strip upper surface (3433) to form a slope, that is, the first clamping strip upper slope (3432). The other side of the first clamping strip upper surface (3433) is connected to the upper side of the first clamping strip outer surface (3434), and the lower side of the first clamping strip outer surface (3434) is connected to the upper surface outer side of the first bottom plate (342).

46. The floor anchoring assembly of claims 1, 2, 4, 6, 9, 11, 13, 15, 22, 24, 26, 27, or 29, wherein, The pre-hanging steps of the lock catch (3) with the limiting lock head (313) of the second abutting surface (3133) and the floor (2) with the third groove (205) and the first protrusion (206) are as follows: 2.1.1), tilt the lock catch (3) at an angle, so that the third protrusion (3115) of the first lock body (31) abuts against the upper convex body outer bottom surface (2112a) of the floor (2), and the first lock body (31) moves along the upper convex body outer bottom surface (2112a) to the first groove bottom side wall (201a); Or tilt the lock catch (3) at an angle, so that the rotating protrusion (314) abuts against the lower slope (225a), and the rotating protrusion (314) moves upward along the lower slope (225a) into the upper groove (202a); 2.1.2), when the third protrusion (3115) of the lock catch (3) moves in the horizontal direction and / or position and passes the boundary of the upper groove outer protrusion (2024a), the first lock body (31) is lifted upward along the third abutting surface (2021a), so that the lowest point of the rotating protrusion (314) is higher than the upper surface of the lower protrusion tenon (221a) in the vertical direction, and the first lock body (31) is translated to the first groove bottom side wall (201a), so that the rotating protrusion (314) abuts against the upper surface of the lower protrusion tenon (221a); 2.1.3), the lock catch (3) is gradually rotated around the supporting point of the rotating protrusion (314) and the upper surface of the lower protrusion tenon (221a) to adjust the inclination angle of the lock catch (3), that is, gradually lower the vertical height of one side of the second lock body (32), and at the same time, the lock catch (3) is gradually translated to the first groove bottom side wall (201a) side in the gradual rotation process, so that the limiting lock head (313) enters the third groove (205a), the upper surface of the lock catch (3) abuts against the upper vertical surface (212a) of the floor (2), the first abutting surface (3131) abuts against the third groove abutting surface (2051a), and the pre-hanging of the lock catch (3) and the floor (2) is completed.

47. The floor anchoring assembly according to claim 1, 2, 6, 9 or 27, wherein, The floor (2) further comprises the lock piece (3); the first abutting surface (3131) of the limiting lock head (313) of the lock piece (3) abuts on the third groove abutting surface (2051), and the upper surface (331) of the lock bar abuts on the upper vertical surface (212) of the floor (2); The second bottom plate (323) and the second clamping strip (324) of the lock piece (3) protrude outside the upper vertical surface (212) of the floor (2); The lock piece (3) is arranged on at least one side of the floor (2), and the side of the floor (2) on which the lock piece (3) is arranged is opposite to another side without the lock piece (3).

48. The floor anchoring assembly of claims 1, 2, 3, 5, 6, 7, 11, 13, 15, 16, or 40, wherein, The third lock body lock piece (3") is arranged in the first groove (20a) of the floor (2a) to implement the pre-hanging installation locking and fixing steps as follows: 3.1.1), the third lock body lock piece (3") is inclined at a certain angle, so that the lower groove (223a) of the floor (2a) is hung on the second clamping strip (324) of the third lock body lock piece (3"), and then the third lock body lock piece (3") is rotated in the lower groove (223a) around the second clamping strip (324), so that the upper guiding surface (333) of the lock bar of the third lock body lock piece (3") abuts on the upper convex body outer bottom surface (2112a) of the floor (2a); 3.1.2), because the upper convex body (21a) and the lower convex tenon (22a) have a wedge effect, the upper convex body (21a) and the lower convex tenon (22a) can be opened at a certain distance when subjected to an external force, so that the upper guiding surface (333) of the lock bar moves along the upper convex body outer bottom surface (2112a) to the direction of the first groove bottom side wall (201a), the upper guiding surface (333) of the lock bar slides through the boundary of the upper groove outer convex strip (2112a), and the upper guiding surface (333) of the lock bar enters the upper groove (202a); 3.1.3)the upper convex body (21a) and the lower tenon (22b) are closed and restored to the state before opening under the action of external force, so that the lock bar (33) is abutted against the third abutment surface (2021a), the second inner vertical surface (3241) is abutted against the lower groove outer vertical surface (2232a), the second inclined pressing strip bottom surface (3221) is abutted against the lower inclined surface (225a), and the lower tenon bottom surface (224a) is abutted against the upper surface of the second bottom plate (323), so that the second lock body (32) with the third lock body locking member (3") and the lock bar (33) are locked and fixed with the floor (2a), the pre-hanging of the second lock body (32) with the third lock body locking member (3") with the floor (2a) is completed, and the second lock body (32) with the third lock body locking member (3") is arranged at a certain distance on one of the opposite two sides of the floor (2a) in the pre-hanging state, and the side with the second lock body (32) with the third lock body locking member (3") is opposite to the other side.

49. The floor anchoring assembly of claims 1, 2, 3, 5, 7, 11, 13, 16, 40 or 41, wherein, The floor (2) further comprises the third lock body locking member (3"); the lock bar abutment surface (334) of the third lock body locking member (3") is abutted against the third abutment surface (2021), the second inner vertical surface (3241) of the third lock body locking member (3") is abutted against the lower groove outer vertical surface (2232), the second inclined pressing strip bottom surface (3221) of the third lock body locking member (3") is abutted against the lower inclined surface (225), the lower tenon bottom surface (224) is abutted against the upper surface of the second bottom plate (323), and the first bottom plate (342) and the first clamping strip (343) of the third lock body locking member (3") protrude outward from the lower vertical surface (222) of the floor (2).

50. The floor anchoring assembly of claims 1, 4, 6, 9, 11, 13, 15, 24, 26, 27, 40 or 41, wherein, The pre-hanging steps of the locking member (3) and the floor (2a) are as follows: 3.2.1) the first lock body (31) of the locking member (3) is pre-hung on the same side of the floor (2a) on which the third lock body locking member (3") has been pre-hung, and at least one or more than one empty position between adjacent third lock body locking members (3") is selected to pre-hang the locking member (3); 3.2.2) the locking member (3) is inclined at a certain angle, so that the third convex strip (3115) of the first lock body (31) is abutted against the upper convex body outer bottom surface (2112a) of the floor (2a), and the first lock body (31) moves along the upper convex body outer bottom surface (2112a) to the first groove bottom side wall (201a); or the locking member (3) is inclined at a certain angle, so that the rotating convex strip (314) is abutted against the lower inclined surface (225a), and the rotating convex strip (314) moves upward along the lower inclined surface (225a) into the upper groove (202a). 3.2.3), when the third protrusion (3115) of the lock piece (3) moves in the horizontal direction and / or position and passes the boundary of the upper groove outer protrusion (2024a), the first lock body (31) is lifted upwards along the third abutting surface (2021a), the lowest point of the rotating protrusion (314) is higher than the upper surface of the lower protrusion (221a) in the vertical direction, and the first lock body (31) is translated towards the first groove bottom side wall (201a), so that the rotating protrusion (314) abuts against the upper surface of the lower protrusion (221a); 3.2.4), the lock piece (3) rotates around the supporting point of the rotating protrusion (314) and the upper surface of the lower protrusion (221a) to adjust the inclination angle of the lock piece (3), i.e., to gradually reduce the vertical height on one side of the second lock body (32), and to gradually translate the lock piece (3) towards the first groove bottom side wall (201a) during the gradual rotation, so that the limiting lock head (313) enters the third groove (205a), the upper surface of the lock piece (331) abuts against the upper vertical surface (212a) of the floor (2a), the first abutting surface (3131) abuts against the third groove abutting surface (2051a), and the pre-hanging of the lock piece (3) and the floor (2a) is completed.

51. The floor anchoring assembly of claims 1, 2, 3, 5, 6, 7, 9, 11, 13, 16, 27, 40 or 41, wherein, The floor (2) further comprises the lock piece (3) and the third lock body lock piece (3"); at least one lock piece (3) and at least one third lock body lock piece (3") are arranged on the same side of the floor (2), and no lock piece (3) and third lock body lock piece (3") are arranged on the opposite side of the floor (2) where the lock piece (3) and the third lock body lock piece (3") are arranged; the first abutting surface (3131) of the limiting lock head (313) of the lock piece (3) abuts against the third groove abutting surface (2051), the upper surface of the lock piece (331) abuts against the upper vertical surface (212) of the floor (2), and the second bottom plate (323) and the second clamping strip (324) of the lock piece (3) protrude outward from the upper vertical surface (212) of the floor (2); The lock piece (3) further comprises the lock piece (3) and the third lock body lock piece (3"); at least one lock piece (3) and at least one third lock body lock piece (3") are arranged on the same side of the floor (2), and no lock piece (3) and third lock body lock piece (3") are arranged on the opposite side of the floor (2) where the lock piece (3) and the third lock body lock piece (3") are arranged; the first abutting surface (3131) of the limiting lock head (313) of the lock piece (3) abuts against the third groove abutting surface (2051), the upper surface of the lock piece (331) abuts against the upper vertical surface (212) of the floor (2), and the second bottom plate (323) and the second clamping strip (324) of the lock piece (3) protrude outward from the upper vertical surface (212) of the floor (2); 52. The floor anchoring assembly according to claim 2, wherein, The lock catch (3) is without the limiting lock head (313), and the lock catch (3) without the limiting lock head (313) is provided as a lock head-free lock catch (3).

53. The floor anchoring assembly according to claim 3, wherein, The upper side of the first tenon inner side (3113) is connected with the side of the first tenon upper surface (3111) to form a bevel as a sixth abutting surface (351), and the upper side of the sixth abutting surface (351) is connected with the first tenon upper surface (3111) to form a convex strip as a fifth convex strip (352), and the first tenon upper surface (3111) is a clamping surface.

54. The floor anchoring assembly according to claim 2, 3, 7 or 52, wherein, When the second bottom plate (323) of the lock head-free lock catch (3) is in a horizontal state, the first tenon upper surface (3111) of the lock head-free lock catch (3) is flush with the surface of the tab lock bar abutting surface (334) in the horizontal direction, and the tab lock bar abutting surface (334) can be a plane, and the tab lock bar abutting surface (334) is parallel to the upper surface of the second bottom plate (323).

55. The floor anchoring assembly according to claim 1, wherein, The floor (2) is without the upper groove (202), and the floor (2) without the upper groove (202) is provided as an upper groove-free floor (2).

56. The floor anchoring assembly according to claim 40, wherein, The third lock body lock catch (3") further comprises an eleventh convex body (3321), and the eleventh convex body (3321) further comprises an eleventh convex body upper surface (3323), and the eleventh convex body upper surface is a clamping surface.

57. The floor anchoring assembly according to claim 1, 2, 6, 7, 40 or 56, wherein, The upper surface of the second inclined pressing strip (322) of the third lock body lock catch (3") and the tab lock bar upper surface (331) form an angle (A1) towards the first lock body (31), and the value of the angle (A1) is set as 35º≤A1≤180º, the tab lock bar abutting surface (334) of the third lock body lock catch (3") overlaps with the eleventh convex body upper surface (3323), the eleventh convex body upper surface (3323) comprises the tab lock bar abutting surface (334), and the eleventh convex body upper surface (3323) is parallel to the upper surface of the second bottom plate (323).

58. The floor anchoring assembly according to claim 1, 2 or 56, wherein, The eleventh convex body upper surface (3323) is parallel to the upper surface of the second bottom plate (323), and the vertical distance (V8) between the horizontal extension line of the eleventh convex body upper surface (3323) and the horizontal extension line of the upper surface of the second bottom plate (323) is equal to the vertical distance (V10) between the horizontal extension line of the lower tenon bottom surface (224) and the horizontal extension line of the upper convex body bottom surface (211).

59. The floor anchoring assembly according to claim 40 or 55, wherein, The upper groove-free floor (2) further comprises the third lock body lock catch (3"), and the third lock body lock catch (3") is fixed at a certain distance apart from the edge of one of the adjacent two side surfaces of the upper groove-free floor (2), and the other side surface of the upper groove-free floor (2) without the third lock body lock catch (3") is opposite to the side surface with the third lock body lock catch (3").

60. The floor anchoring assembly of claims 1, 2, 3, 4, 5, 6, 11, 16, 33, 35, 36, 40, 41, 44, 52, 53, 55, or 56, wherein, The third lock body lock catch (3") and the lock head-free lock catch (3) are used in combination to jointly implement the typical installation steps with the adjacent upper groove-free floor (2) as follows: 4.1.1), first fix the third lock body has lock piece (3") on one of the opposite sides of the no upper groove floor (2a) at a certain distance apart, and the third lock body has lock piece (3") is inclined at a certain angle, so that the lower groove (223a) of the no upper groove floor (2a) is hung on the second clamping strip (324); 4.1.2), the third lock body has lock piece (3") rotates around the second clamping strip (324) in the lower groove (223a), so that the upper guide surface (333) of the third lock body has lock piece (3") is abutted on the upper convex body bottom surface (211a); 4.1.3), the third lock body has lock piece (3") rotates around the second clamping strip (324) in the lower groove (223a), because of the wedge effect between the upper convex body (21a) and the lower convex tenon (22a), the upper convex body (21a) and the lower convex tenon (22a) can be opened at a certain distance when subjected to external force, so that the upper guide surface (333) of the third lock body has lock piece (3") moves along the upper convex body bottom surface (211a) to the first groove bottom side wall (201a) direction; 4.1.4), when the second inclined pressing strip bottom surface (3221) is abutted on the lower inclined surface (225a) of the no upper groove floor (2a), the lower convex tenon bottom surface (224a) is abutted on the upper surface of the second bottom plate (323), the second clamping strip inner vertical surface (3241) is abutted on the lower groove outer vertical surface (2232a), the eleventh convex body upper surface (3323) is abutted on the upper convex body bottom surface (211a), the pre-hung locking of the third lock body has lock piece (3") and the no upper groove floor (2a) is completed; 4.2.1), the no lock head lock piece (3) is pre-hung on the side surface of the no upper groove floor (2a) on the same side as the third lock body has lock piece (3"), first incline the no lock head lock piece (3) at a certain angle, so that the vertical distance (V11) between the horizontal direction extension line of the uppermost end of the sixth abutting surface (351) and the horizontal direction extension line of the lowermost end of the rotating convex strip (314) is less than or equal to the vertical distance (V1) between the horizontal direction extension line of the upper convex body bottom surface (211a) of the no upper groove floor (2a) and the horizontal direction extension line of the lower convex tenon upper surface (221a); the first convex tenon (311) of the no lock head lock piece (3) is translated to the first groove bottom side wall (201a) direction, so that the rotating convex strip (314) is abutted on the lower convex tenon upper surface (221a); 4.2.2) Move the first tenon (311) along the upper surface (221a) of the lower tenon toward the bottom sidewall (201a) of the first groove, so that the upper surface (331) of the lever lock bar abuts against the upper vertical surface (212a), the fifth protrusion (352) and / or the sixth abutting surface (351) abut against the bottom surface (211a) of the upper protrusion, the lockless locking fastener (3) and the locking fastener with the third lock body (3") are arranged at intervals on the same side of the floor without the upper groove (2a), and the lockless locking fastener (3) is pre-hung with the floor without the upper groove (2a); 4.3.1) Lift the grooveless floor (2b) to a certain height, so that the lower groove (223b) on the side of the grooveless floor (2b) without the third lock body fastener (3") is hung on the second clip (324) of the lockless fastener (3), and the lower tenon (22b) of the grooveless floor (2b) to be installed falls into the second groove (325) and the inner cavity (3251) of the lockless fastener (3); 4.3.2) Press down on the floor without upper groove (2b), the upper surface (2233b) of the lower groove of the floor without upper groove (2b) abuts against the outer surface (3243) of the second clip of the lockless fastener (3), so that the first tenon (311) rotates around the rotating protrusion (314) in the first groove (20a), and the fifth protrusion (352) presses up on the bottom surface (211a) of the upper protrusion. Since there is a wedge effect between the upper protrusion (21a) and the lower tenon (22a), the upper protrusion (21a) and the lower tenon (22a) can open a certain distance under the action of external force, so that the fifth protrusion (352) moves along the bottom surface (211a) of the upper protrusion (211a) along the dotted line towards the groove of the first groove (20a); 4.3.3) While pressing down on the grooveless floor (2b), the guide surface (333) on the lever lock bar moves along the upper end of the upper convex bottom surface (211b) of the grooveless floor (2b) toward the first groove bottom sidewall (201b); 4.3.4) During the rotation of the first tenon (311) around the rotating protrusion (314) in the first groove (20a), the lower edge of the outer surface (2232b) of the lower groove of the floor without upper groove (2b) abuts against the upper inclined surface (3432) of the first locking strip (343) with the third locking body fastener (3"). 4.3.5) When the fifth protrusion (352) slides past the point where the bottom surface (211a) of the upper protrusion is at its highest tension, the upper protrusion (21a) and the lower protrusion (22a) gradually close and return to their pre-open state due to the gradual loss of external force, so that the upper surface (3111) of the first protrusion abuts against the bottom surface (211a) of the upper protrusion, the bottom surface (3112) of the first protrusion abuts against the upper surface (221a) of the lower protrusion, the bottom surface (3121) of the first inclined strip abuts against the lower inclined surface (225a), so that the first lock body (31) of the lockless locking buckle (3) and the floor (2a) without upper groove connected therein are locked and fixed in the vertical direction of the front of the floor; 4.3.6) The abutting surface (334) of the paddle lock bar abuts against the bottom surface (211b) of the upper protrusion, the bottom surface (3221) of the second inclined pressure bar abuts against the lower inclined surface (225b) of the floor without upper groove (2b), the bottom surface (224b) of the lower protrusion tenon abuts against the upper surface of the second base plate (323), and the inner vertical surface (3241) of the second locking strip abuts against the outer vertical surface (2232b) of the lower groove, thereby completing the locking and fixing of the floor without upper groove (2b) with the paddle lock bar (33) and the second lock body (32) in the vertical direction on the front of the floor; 4.3.7) The lower surfaces (222a) of the adjacent grooveless floor (2a) and the lower surfaces (222b) of the adjacent grooveless floor (2b) abut against the eighth convex outer surface (3216) and the seventh convex outer surface (3213) of the lockless fastener (3), and the lower surfaces (222a) of the adjacent grooveless floor (2a) and the lower surfaces (222b) of the adjacent grooveless floor (2b) also abut against the seventh convex outer surface (3213") and the eighth convex outer surface (3216") of the lock with the third lock body fastener (3"), so that the lock with the third lock body fastener (3") and the lockless fastener (3) are used together to lock and fix the adjacent grooveless floor (2a) and the grooveless floor (2b), and the front surfaces of the two adjacent floor (2) are flush. 4.3.8) The inner surface (3431) of the first locking strip and the inner surface (3241) of the second locking strip of the third locking body fastener (3") respectively abut against the outer surface (2232b) of the lower groove of the floor (2b) and the outer surface (2232a) of the lower groove of the floor (2a), so as to realize the horizontal locking and fixing of the adjacent floor (2a) without upper groove and the floor (2b) without upper groove on the side of the floor.

61. The floor anchoring assembly according to claim 13, wherein, The upper surface (2023) of the upper groove can be an inclined surface. The upper surface (2023) of the upper groove extends upward and intersects with the upward extending surface of the fourth abutment surface (2022), and the intersection is a straight line.

62. The floor anchoring assembly according to claim 32 or 52, wherein, The vertical strip first side surface (3227) of the lock catch (3) without a lock head is provided with the seventh convex body (3211), and the vertical strip second side surface (3228) is not provided with the eighth convex body (3212) on one side.

63. The floor anchoring assembly according to claim 32 or 56, wherein, The vertical strip first side surface (3227) of the lock catch (3) with a third lock body is not provided with the seventh convex body (3211), and the vertical strip second side surface (3228) is provided with the eighth convex body (3212) on one side.

64. The floor anchoring assembly according to claim 1, wherein, The lock catch (3) is not provided with the push piece lock bar (33), and the lock catch (3) without the push piece lock bar (33) is a lock catch (3) without a push piece lock bar.

65. The floor anchoring assembly of Claim 55, wherein, The side edge of the upper groove-free floor (2) is an arc-shaped side edge, and the upper groove-free floor (2) with an arc-shaped side edge is an arc-shaped side edge floor (2).

66. The floor anchoring assembly according to claim 1, 16 or 65, wherein, When a cross section along a tangent of a circle center of the arc-shaped side edge floor (2) is formed, a horizontal distance between a vertical extension line of the upper side surface (212) and a vertical extension line of the lower groove outer side surface (2232) is (L5), and the (L5) values of adjacent arc-shaped side edge floors (2) can be different.

67. The floor anchoring assembly according to claim 2, wherein, A rack U-shaped body (70) is used instead of the vertical strip (321), and the lock catch (3) with the rack U-shaped body (70) and without the vertical strip (321) is a U-shaped rack lock catch (3), which comprises a U-shaped groove (702) and a tooth-shaped convex strip (701).

68. The floor anchoring assembly according to claim 32 or 67, wherein, The U-shaped rack lock catch (3) comprises the seventh convex body (3211) and the eighth convex body (3212).

69. The floor anchoring assembly according to claim 1 or 67, wherein, The floor (2) further comprises the U-shaped rack lock catch (3).

70. The floor anchoring assembly according to claim 1 or 67, wherein, The floor (2) further comprises a collection and buckling strip (80) and an elastic clamping piece (90), the upper end of the collection and buckling strip (80) is provided with a strip-shaped buckling strip (801), the lower end of the strip-shaped buckling strip (801) is provided with a lower toothed strip (802) at the central position, the upper end of the elastic clamping piece (90) is vertically provided with an upwardly opening upper toothed clamping groove (901) at the central position, the lower end of the elastic clamping piece (90) is provided with a lower toothed convex strip (902) at the central line position, and the two sides of the upper end of the lower toothed convex strip (902) are symmetrically provided with elastic clamping piece inclined abutting surfaces (903), the lower toothed convex strip (902) of the elastic clamping piece (90) can be embedded into the U-shaped groove (702) of the U-shaped rack lock catch (3), the lower toothed strip (802) of the collection and buckling strip (80) can be embedded into the upper toothed clamping groove (901) of the elastic clamping piece (90), and the two elastic clamping piece inclined abutting surfaces (903) can abut on the upper surfaces of the first inclined pressing strip (312) and the second inclined pressing strip (322) of the U-shaped rack lock catch (3), respectively.

71. The floor anchoring assembly according to claim 2, 32, 40 or 67, wherein, The rack-toothed U-shaped body (70) replaces the vertical strip (321) of the third lock body lock catch (3"), and the third lock body lock catch (3") without the vertical strip (321) is provided as a U-shaped rack third lock body lock catch (3"), which comprises the seventh convex body (3211), the eighth convex body (3212), a U-shaped groove (702), and a toothed convex strip (701).

72. The floor anchoring assembly according to claim 6 or 7, wherein, The shackle piece (3) is connected with the shackle piece lock bar upper surface (331) to form a step recessed inwardly to the direction of the shackle piece lock bar bottom surface (332) as a shackle piece lock bar support step (3341), and the upward inclined surface connected with the shackle piece lock bar support step (3341) is the shackle piece lock bar abutting surface (334).

73. The floor securing assembly of claims 1, 2 or 3, wherein, The first convex tenon upper surface (3111) of the lock catch outwardly extends and protrudes from the first convex tenon outer side surface (3114), and the outwardly extended first convex tenon upper surface (3111) is an inclined surface, in the vertical direction, the side of the first convex tenon upper surface (3111) close to the first convex tenon outer side surface (3114) is higher than the side of the first convex tenon upper surface (3111) close to the limiting lock head (313) connection.

74. The floor anchoring assembly according to claim 2 or 3, wherein, The first convex tenon outer side surface (3114) is provided with a first weight-reducing groove (361), which is slightly trumpet-shaped, and the first inclined pressing strip (321) is provided with a second weight-reducing groove (362) at the upper end of the connection with the first convex tenon inner side surface (3113).

75. A floor fixing assembly according to claim 1, characterized in that, The floor (2) is made of wood or MDF (medium density fiberboard) and HDF (high density fiberboard) based wood products.

76. The floor anchoring assembly of Claim 1, wherein The floor (2) core material can be a polymer-based core containing thermoplastic or thermosetting material and filler; wherein the thermoplastic material can contain polyvinyl chloride plastic and mineral-based filler; wherein the thermosetting material can contain melamine formaldehyde resin, and contains wood fibers; wherein the mineral base can contain magnesium oxide and optional magnesium chloride (e.g. MgCl2) and / or magnesium sulfate (e.g. MgSO4), the floor (2) is made of the polymer-based core material, and the floor (2) has certain elasticity and toughness.

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