Floor fixing assembly

Abstract

The utility model provides a floor fixing assembly, which comprises a floor and a locking fastener, the same side surface of the floor is provided with a first groove and a lower tenon, the locking fastener comprises a first lock body, a second lock body and a plectrum locking bar, and the first lock body and the plectrum locking bar are respectively embedded into the first groove of the adjacent floor so as to fix the floor. The second lock body is locked with the lower tenon of the floor on the same side of the connecting plectrum locking bar, so that the adjacent floors are locked in the horizontal direction and the vertical direction; the utility model has the beneficial effects that: the adjacent floors can be mounted only by relatively displacing in the vertical direction, and as a plurality of measures for preventing the locking fasteners from rotating are arranged between the locking fasteners and the floors, the adjacent floors connected by the locking fasteners have horizontal and vertical locking effects, so that the requirement on the flatness of the ground is low, and the installation is convenient. The adjacent floors are not prone to fluctuating up and down, the floors are easy to install and operate, nail-free and glue-free, low in cost and high in efficiency, and the damaged floors can be replaced from any position in the middle through lock catch pieces.

Description

Technical Field

[0001] The utility model belongs to the field of floor decoration engineering in the IPC classification E04F15, specifically for wooden floors or imitation wooden floors on the building floor surface. The utility model relates to a floor fixing component, especially a floor with a first groove and a lower tenon on the same side, and realizes the tight locking and splicing of adjacent floors by flipping and / or moving in the first groove of the floor with the help of a locking component. Background Art

[0002] In the prior art, floors are mainly divided into two types: flat-edge floors and locking floors. For flat-edge floors, male tenons and female grooves are respectively provided on the opposite two side edges of the floor periphery. The male tenon on one side of the floor is translated and inserted into the female groove of the adjacent floor. As Figure 1-1 shown, the side of the flat-edge floor 01 is provided with a male tenon 011, and a female groove 012 that cooperates with the male tenon 011 of the floor 01 is provided on the opposite other side of the floor 01. Figure 1-2 is a schematic diagram of the connection of male tenons and female grooves of two adjacent floors. It can be seen from Figure 1-2 that the locking strength of adjacent flat-edge floors in the vertical direction of the floor surface is very high, and it is not easy for adjacent flat-edge floors to show undulating phenomena. However, since the flat-edge floors have no locking strength in the horizontal direction, nails need to be used to fix them on the wooden keel from the side of the male tenon, or glue is used to bond the male tenons and female grooves of adjacent flat-edge floors together. Another method is to bond and fix the bottom surface of the flat-edge floor to the ground with glue. These methods of installing flat-edge floors not only take a long installation time and have high installation labor costs, but also the installation auxiliary materials such as keels, glue, and nails for installing flat-edge floors are very costly.

[0003] Locking floors are mainly divided into two categories. Analyzing the existing locking floor structures, one category is to set matching male tenons and female grooves on the opposite two side edges of the floor, and directly assemble the male tenons and female grooves on the opposite two side edges of the floor; the other category is to use an independent locking connector in cooperation with the floor, and male tenons and / or female grooves are provided on the side of the floor to cooperate with the female grooves and / or male tenons of the independent locking connector to fix adjacent floors.

[0004] First, let's look at the locking floor with matching male tenons and female grooves on the opposite two side surfaces of the floor. When installing this type of locking floor, each floor to be installed needs to be tilted at a certain angle so that the male tenon of the tilted locking floor fits on the bottom edge of the female groove of the already installed locking floor on the other side. Pressing one side of the female groove of the tilted floor to be installed can complete the installation of adjacent locking floors. Hereinafter, this type of locking floor is referred to as an inclined plug-in locking floor in this article.

[0005] The opposite two side edges of the inclined plug-in locking floor are respectively provided with matching male tenons 101 and female grooves 104, as specifically shown in Figure 1-3 shown; as Figure 1-4As shown, when installing the angled plug-in lock floor, the angled plug-in lock floor 10a must be tilted at a certain angle so that the male tenon 101 can be inserted into the female grooves 104 of the angled plug-in lock floors 10c and 10d. At the same time, the end where the female groove 104 of the angled plug-in lock floor 10b is located should be lifted so that the male tenon 101 can enter the female groove 104. Then, the angled plug-in lock floor is pressed flat and locked to fix adjacent angled plug-in lock floors. Figure 1-5 Figure 1-5 is a cross-sectional schematic diagram of the lock connection after adjacent angled plug-in lock floors 10 are installed. The installation of this type of angled plug-in lock floor cannot be independently completed by non-professionals. The angled plug-in lock floor is based on a series of patents such as CN97190692.0, "Floor Composed of Hard Board Units and Method for Manufacturing Such Board Units," authorized by Unilin Management B.V. in 2002. There are more than twenty patent applications in this series, and their structures are basically the same. Since when installing the angled plug-in lock floor, it is not necessary to use nails in cooperation with keels and glue bonding to firmly lock adjacent angled plug-in lock floors horizontally, the advantages in the installation link are very obvious. That is, the angled plug-in lock floor does not require the use of keels laid between traditional flat-joint floors and the ground, but can adopt the floating floor installation method. The definition of the floating floor installation method in the national standard GB / T20238-2018 of the People's Republic of China is: a flooring method that directly lays the floor on the underlay. Therefore, as long as a moisture-proof underlay is laid on the ground, the angled plug-in lock floor can be installed. Installing the angled plug-in lock floor using the floating floor installation method is relatively faster and more convenient than installing flat-joint floors using keels and nails in cooperation or using glue bonding, reducing the installation labor cost, improving the installation efficiency, and also reducing the cost of auxiliary materials for installing the angled plug-in lock floor. Secondly, with the popularization of floor heating facilities, more and more floors are selected to use the floating installation method. Therefore, the floating installation of angled plug-in lock floors is widely adopted by consumers.

[0006] Since the angled plug-in lock floor has been used for a long time, more and more problems have been reported in aspects such as production and processing, installation and after-sales, and the application of the lock structure. The following is a basic description of the common problems of the angled plug-in lock floor.

[0007] Firstly, the raw material waste of the processed inclined plug-in lock floor is large. Since the female groove of the inclined plug-in lock floor is different from that of the flat floor, the female groove of the flat floor is hidden inside the side of the flat floor, that is, the female groove of the flat floor does not protrude from the floor surface, only the male tenon side of the flat floor protrudes from the floor surface, while both the male tenon and the female groove of the inclined plug-in lock floor protrude outside the floor surface. The area occupied by these male tenons and female grooves usually accounts for 4-10% of the surface area of the finished inclined plug-in lock floor, and some are even higher, specifically varying according to the size of the surface area of the finished inclined plug-in lock floor and the protruding size of the male tenons and female grooves. The smaller the surface area of a single-piece inclined plug-in lock floor, the greater the raw material waste. Secondly, since the male tenons and female grooves that are arranged oppositely on both sides of the inclined plug-in lock floor are used in cooperation, two different rabbet cutters are required for the production and processing of the male tenons and female grooves. Moreover, the requirements for the equipment are relatively high and the debugging of the rabbet cutters is rather cumbersome, and the efficiency of the equipment debugging process is low.

[0008] If it is necessary to install the inclined plug-in lock floor or the flat floor in a herringbone pattern, during production and processing, it is necessary to produce two groups of floors 11a and 11b with male tenons and female grooves arranged in different ways for combined use. As Figure 1-6 shown, the male tenons of the inclined plug-in lock floor 11a or the flat floor 11a are 101a and 103a respectively, and the female grooves of the inclined plug-in lock floor 11a or the flat floor 11a are 102a and 104a respectively. While the male tenons of the inclined plug-in lock floor 11b or the flat floor 11b are 101b and 103b respectively, and the female grooves of the inclined plug-in lock floor 11b or the flat floor 11b are 102b and 104b respectively. It can be Figure 1-6 seen that the arrangement patterns of the male tenons and female grooves of the inclined plug-in lock floors 11a and 11b on the floor sides are different. Such an installation pattern makes the operations in the rabbet slotting link, the surface coating process link, the classification placement in the packaging and warehousing and other links of the production and processing of the inclined plug-in lock floor cumbersome. During the installation process, it is also necessary to alternately use the floors 11a and 11b in cooperation. Therefore, when installing the herringbone pattern, the installation difficulty of the inclined plug-in lock floor is increased, the installation efficiency is low, and the installation labor cost is also high.

[0009] Secondly, when installing the angled plug-in lock floor, it is first necessary to select the floor arrangement direction, which is also a trouble for installers. Due to the unity of the arrangement of the male tenons and female grooves of the angled plug-in lock floor, the probability of reusing the cutting scraps generated during the installation of the angled plug-in lock floor is not high. The area of loss generated during the installation of the angled plug-in lock floor accounts for about 3-10% of the net area after actual installation. The specific area of loss generated varies according to the size of the room where the angled plug-in lock floor is used, the arrangement method during the installation of the angled plug-in lock floor, and the size of the floor surface of the angled plug-in lock floor. The smaller the area of the room where the angled plug-in lock floor is used and the larger the area of the floor surface of the angled plug-in lock floor, the greater the actual loss of the angled plug-in lock floor.

[0010] After-sales maintenance and replacement of the angled plug-in lock floor are also very cumbersome. Usually, the angled plug-in lock floor is disassembled piece by piece from the wall, which is likely to cause damage to other parts and accessories, such as skirting boards, etc. It will also damage the undamaged floors around the damaged floor during disassembly; or the damaged angled plug-in lock floor to be replaced is cut off with a cutting tool. Nowadays, the construction method and supporting tools for cutting out the damaged angled plug-in lock floor from the middle position are already mature. Usually, the time required to cut out a single angled plug-in lock floor with a cutting tool only takes 5-20 minutes under the normal proficiency of those skilled in the art, which specifically varies according to the size of the floor surface to be replaced and the method used for the previous floor installation. However, since both the male tenons and female grooves of the angled plug-in lock floor protrude from the floor surface, it is necessary to cut off the male tenons and female grooves protruding from the floor surface around the new angled plug-in lock floor to be replaced, and paste and fix the back of the angled plug-in lock floor to the ground with glue. Such a repair method has complicated procedures and high repair costs. Since the newly replaced angled plug-in lock floor has no male tenons and female grooves on the side of the floor, it is impossible to position and fix the relative height with the adjacent floors. Therefore, it is very difficult to ensure the surface flatness with the adjacent floors, and using glue to fix the newly replaced floor is likely to cause the glue to come off, loosen, and warp during later use.

[0011] It should be particularly noted that since the angled plug-in lock floor needs to be installed at a certain angle, such an installation method results in the lock connection function only being applicable to floors with a rectangular surface. Therefore, the angled plug-in lock floor cannot be applied to various shaped floors such as triangular, parallelogram, hexagonal, and arc-sided floors. In the art, the parallelogram is usually called the herringbone floor, and hereinafter in this article, the parallelogram floor will be referred to as the herringbone floor.

[0012] Due to the above problems existing in the obliquely inserted locking floor, relevant manufacturers have also spared no effort in research and improvement, hoping to design a locking floor that does not require the male tenons and female grooves to protrude from the floor surface and does not need to be installed at a certain angle. The R & D personnel designed to uniformly provide grooves and / or tenons on the side of the floor, and lock and connect them with a locking connector that matches the grooves and / or tenons.

[0013] From the connection function of the locking connector and the material of the locking connector, it can generally be divided into two types of locking connectors. One type of locking connector is a locking connector with a certain elasticity made of materials such as plastic, ABS engineering plastic or elastic metal materials, which will be hereinafter referred to as an elastic locking connector in this article.

[0014] The other type is a locking connector made of metal, metal alloy or high-strength polymer material. The locking connector itself basically has no elasticity, and the locking connector is not prone to deformation and / or breakage, which will be hereinafter referred to as a rigid locking connector in this article.

[0015] When using an elastic locking connector to connect the floor, first of all, a part of the structural device of the elastic locking connector should have a certain elastic function to ensure that the grooves and / or tenons of the floor can be embedded into the tenons and / or grooves that match the elastic locking connector, so as to complete the connection and fixation of the floor and the elastic locking connector.

[0016] The problems existing in connecting the floor with an elastic locking connector will be described first below.

[0017] Practical cases of using elastic snap connectors to connect floors are represented by the Chinese invention patent CN2397201Y "Combined Structure of Wood Floors" and the Chinese invention patent CN102493625 A "Snap-Type Plate Connector and Its Plate"; in these two cases, taking the invention patent CN102493625 A "Snap-Type Plate Connector and Its Plate" as an example, the plate connector adopted in this invention is strip-shaped and slightly inverted T-shaped when viewed from the end face. The slightly inverted T-shaped plate connector is symmetrically arranged left and right. It has a bottom plate forming the inverted T shape and an upright part in the middle of the upper surface of the bottom plate. For other technical features, please refer to the disclosure of the patent CN102493625 A; the plate connector of this invention and other elastic snap connectors of the same type are provided with an elastic bottom plate at the bottom. On the same side of the side of the floor that cooperates with these elastic snap connectors, corresponding tenons and / or grooves are provided. When installing such floors, first, one side of the elastic snap connector enters one side of the floor. After the floor to be installed needs to be horizontally moved and abutted against the side of such an elastic snap connector, it is then pressed down into the floor to complete the connection and installation of adjacent floors. It should be noted that by referring to the specification and drawings of CN102493625 A "Snap-Type Plate Connector and Its Plate", when installing the floor, it is necessary to first move horizontally and then press down. Therefore, when splicing more complex splicing patterns and colors and the construction requirements are difficult, for example, when a floor needs to be seamlessly combined with the edges of a wall or tiles, it still cannot be effectively solved.

[0018] Another problem with using elastic snap connectors to connect floors is that since the upper side edges of adjacent floors are not pressed down vertically in the same vertical plane, but rather the floor to be installed needs to be first horizontally moved and then pressed down. For details, please refer to the specification and attached Figure 3 figures of CN102493625 A "Snap-Type Plate Connector and Its Plate". Such an installation step results in that when the floor in the middle position needs to be replaced, after removing the floor in the middle position, one side of the convex strip of the elastic snap connectors around the remaining floors protrudes above the floor surfaces of the surrounding floors. Before embedding the floor to be installed, it is necessary to use tools to lift the floors around the position where the floor to be embedded is located at a certain angle so that the floor to be installed can be embedded. Such a way of replacing the floor cannot be independently completed by one person, and the replacement difficulty is extremely high. Even when replacing long-strip floors or large-sized floors, the operation of replacing the floor often easily fails.

[0019] When using elastic snap connectors to connect floors, there is also a problem that the biting tension between the horizontal elastic snap connectors and the floors is insufficient. The main reason is that when the tenons and / or grooves of the floor are inserted into the grooves and / or tenons of the elastic snap connectors, it relies on the elastic functional characteristics of the material of the elastic snap connectors, causing the bottom plate of the elastic snap connectors to deform downward in order to insert the male tenons of the floor. Secondly, the locking block on the base of the elastic snap connectors and the biting part of the tenons of the floor are designed with an arc or inclined surface structure. For specific reference, see the specification and appendix of CN102493625 A, "Snap-Type Plate Connectors and Their Plates". Figure 3 Refer to step of Figure 7 in the attached drawings. Therefore, when wooden floors encounter high humidity, the wooden floors will expand and open, resulting in the floors being easily separated from the elastic snap connectors to a certain extent, causing the adjacent floors to have height differences and gaps.

[0020] When using elastic snap connectors to connect floors, there is also a problem that the vertical locking strength between adjacent floor surfaces is insufficient, resulting in a height difference problem between adjacent floors when the floors are subjected to large forces on the floor surface. This is mainly because when installing the floors, a moisture-proof and shock-absorbing film of a certain thickness needs to be laid on the bottom surface of the floors, and the bottom plate of the elastic snap connectors has a certain elasticity, causing adjacent floors to easily fluctuate with each other and generate height differences when the floors are subjected to large forces on the surface.

[0021] Since the materials used to manufacture elastic snap connectors are usually plastics or ABS engineering plastics, etc., under the action of surrounding environmental conditions such as air, light, and heat for a long time, their chemical structures will gradually be damaged, resulting in the deterioration of physical properties and the reduction of mechanical properties. Eventually, they may become hard and brittle or soft and sticky, and are no longer suitable for use. Therefore, it will affect the connection strength between the floors and the elastic snap connectors.

[0022] To solve the above problems, the applicant previously designed a rigid snap connector that does not require horizontal movement and only needs to press and connect adjacent floors vertically downward. The applicant applied for a utility model patent in 2019 and obtained the authorization and public disclosure on October 27, 2020, CN211775350U, "A Fixed Fastener and a Decoration Material Fixing Assembly". Combining the disclosed drawings, in the second decoration material fixing assembly in the embodiment, the second decoration material fixing assembly includes the above-mentioned fixed fastener and the decoration material. There are slots for fixing the limiting plates on the inner side surface of the decoration material. There is a card slot at each end of the inner side surface of the decoration material, and there is a closing part at the end of the card slot, and the closing part abuts against the space between the adjacent first retaining piece and the second retaining piece. Press the decoration material, and the closing part drives the rotating body to rotate and fix. The distance between the two limiting plates is slightly smaller than the distance between the two slots for further clamping and fixing the decoration material. It can be applicable to Figure 3 、 Figure 5 、the fixed fastener in Figure 6, where Figure 3 The installation process diagram of the fixed fastener can be referred to Figure 12-1 to Figure 12-3, as can be seen from the above drawings, the decorative material in this embodiment is a floor. Since the sides of the slots on both sides of the bottom of the floor are perpendicular to the horizontal plane of the floor, the limiting plates on both sides of the bottom plate of the fixing fastener are respectively inserted into the two slots at the bottom of the floor. The advantage of the locking of the limiting plate with the slot of the floor is that the locking strength of the floor side in the horizontal direction is very high. In addition to this advantage, there are still the following problems in the actual application of this locking technology; firstly, the cost of the fixing fastener is very high. Since this type of fixing fastener consists of two parts, the first part is referred to as the fixing fastener body in this article. The fixing fastener body is composed of a bottom plate, a rotating shaft and a limiting plate. The second part is the locking buckle, which consists of a rotating body, a first retaining piece and a second retaining piece. Since the thickness value of the vertical closing part of the floor closing part structure design in the vertical direction is small, the slots opened at the bottom of the floor are arranged in the horizontal direction and / or position such that the slots at the bottom of the floor are located between the inner side walls of the slots opened on the inner side of the floor and the two limiting plates on both sides of the floor center position. Therefore, the bottom width dimension of the fixing fastener must have a relatively wide width, resulting in too high a cost of the fixing fastener body. Secondly, since the locking buckle needs to be placed on the rotating shaft on the bottom plate, it not only increases the overall cost of the fixing fastener, but also increases the labor cost of the assembly of the locking buckle and the fixing fastener body. And since there is a limiting slope on the rotating shaft of the fixing fastener body, the locking buckle must be kept parallel to the rotating shaft from one side of the rotating shaft on the bottom plate of the fixing fastener body to be moved in to complete the pre-hanging of the locking buckle and the fixing fastener body. Since the tolerance reserved for the cooperation between the diameter of the rotating shaft and the inner diameter of the rotating body of the locking buckle is very small, it is very difficult to pre-hang the locking buckle on the rotating shaft, and the operation labor cost is high. Therefore, the cost of a set of fixing fasteners composed of two components is very high. Since the floor is different from the wall panel, the size of the floor surface is usually relatively small compared to the wall panel. Therefore, the number of fixing fasteners required during the installation of the floor is very large, and the cost of using such fixing fasteners in the floor is much higher than the cost of other locking floor, and even higher than the cost of the inclined plug-in locking floor. Secondly, the disadvantages of applying such fixing fasteners to the floor also include low installation efficiency. Since the parts of the first retaining piece and the second retaining piece protruding outside the outer diameter of the rotating body are very short, when the floor to be installed is pressed into the previously installed floor in a non-flat state, it is easy to cause the closing part of the floor at the end with a downward inclination of the floor to be installed not to fall into the space between the first retaining piece and the second retaining piece, resulting in the closing part of the floor directly falling below the second retaining piece, causing the installation and fixation of adjacent floors to fail, resulting in the need to disassemble the incorrectly installed floor and repeat the new installation steps again. Therefore, the installation efficiency is low; in addition, since the floor is different from the wall panel, the commonly used thickness of the floor is between 8-18mm. Since there is also the thickness of the bottom plate, the diameter of the rotating shaft and the outer diameter of the rotating body of the locking buckle in this type of fixing fastener, in the prior art, the floor thickness is less than 14.A size of 5mm is not suitable for connecting and fixing the floor using such fixing fasteners; moreover, there are still problems with the installation locking strength, especially the locking strength in the vertical direction of the floor surface. Because the floor is different from the wall panel, when the front loads of two adjacent floors are different, or when one floor is slightly warped and bent relative to another floor, a height difference may occur at the joint side between the adjacent floors. From the attached description of the patent CN110924614A applied and published by the applicant... Figure 4-2 It can be seen that the first retaining piece and the second retaining piece form a V shape. As can be seen from Figure 13 of the attached drawings, when the floor installation is completed, the first retaining piece and the second retaining piece respectively abut against the upper and lower inclined surfaces of the floor closing part. In this way, the locking method of the lock on such a fixing fastener with the floor cannot be fixed firmly, which may lead to a height difference at the joint side between adjacent floor boards.

[0023] The applicant applied for a utility model patent in 2022 and obtained the authorization and publication on June 6, 2023, for CN219138238U "Implicit Press-fit Locking Connector and Grooved Wood Floor". A female groove is opened in the middle of the periphery of the floor. The inner wall of the female groove has a step and a bottom groove structure. The two ends of the connector are respectively a tooth hook end and an arc plate end, and there are multiple levels of convex teeth on the outer edge of the tooth hook end; by placing the connector between the butt female grooves and pressing the floor boards, the tooth hook end and the arc plate end of the connector are simultaneously and reversely flipped and respectively synchronously embedded into the two female grooves on both sides. The connector is tightly locked and embedded in the female groove of the floor, forming a lock in the interlayer direction. The tooth hook end and the arc plate end are respectively embedded into the two butt female grooves on two adjacent floor boards to complete the splicing of the floor; the advantages of using this connector to connect the floor are that, firstly, in the installation method, it still only requires pressing vertically without horizontal movement of the floor to install the floor. Secondly, since the connector has no bottom plate and is small in size, and there is no need to combine multiple independent accessories into a connector, the cost of the connector is low; in addition to these advantages, the disadvantage of the implicit press-fit locking connector is that after the connector is inserted into the female groove, when a relatively large force is applied to the floor surface and / or the ground flatness under the floor is poor, when a relatively large force is applied to the floor surface, the connector will still rotate to a certain extent in the female groove of the floor, and the connector cannot be stably at an angle with the floor, resulting in an easy height difference at the joint of adjacent floors; secondly, before installing the floor, there is still a problem of pre-hanging and falling off in the pre-fixing method of this floor and the connector. Especially, it is difficult to accurately position the connector fixed on the convex teeth of the floor by external force in the female groove of the floor, and the connector pre-hung in the female groove of the floor is prone to partial falling off because the floor surface usually has a certain bending, resulting in multiple connectors on the same side not being on the same horizontal line, causing the connectors pre-fastened on the floor to be installed to be unable to be simultaneously inserted into the female grooves of the floors already installed on the ground, and causing some of the connectors pre-embedded in the female grooves on the floor to be installed to fall off, which not only increases the installation difficulty, but also non-professionals cannot complete the installation independently.

[0024] In addition, when repairing and replacing the floor connected by the internal implicit press-locking connector, if the length of the long-strip floor is too long, for example, exceeding 1200 mm, when pre-hanging the connector on the peripheral female groove of the new floor to be replaced, due to the too long length of the floor, some connectors that have been buckled on the female groove of the floor may fall off from the female groove during the movement of the floor. Repairing and replacing the floor with a longer length usually requires the assistance of multiple people to complete together, and non-professionals cannot operate it.

[0025] The above has made a relatively detailed and objective description of the problems existing in the mainstream floor of the prior art in terms of installation method, application scope of the locking groove, locking strength in the vertical direction of the floor surface, locking strength in the horizontal direction of the floor side, floor installation, repair and replacement, raw material cost of manufacturing the floor, production and processing efficiency, pre-hanging of the locking groove connector with the floor before installation, and cost of the locking groove connector, etc. However, in the prior art, obviously, the flat floor is the best in terms of the locking strength in the vertical direction of the floor front. And for the floor of CN211775350U "A Fixed Fastener and a Fixed Component for Decoration Materials" applied by the applicant in 2019 and authorized and publicly disclosed as a utility model patent on October 27, 2020, the locking method between the floor and the fixed fastener is the best in terms of the locking strength in the horizontal direction of the floor side. Since the floating installation of the floor is simple and fast and does not require other materials such as keels, the floating installation method is very popular in the market. However, the locking strength in the vertical direction of the floor front and the locking strength in the horizontal direction of the floor side are still the key concerns of relevant technical personnel in this field. In the prior art, after choosing the floating installation method for the floor with inclined plug-in locking grooves, or the floor connected with elastic locking groove connectors or rigid locking groove connectors, these three types of locking groove floors are easily affected by factors such as changes in climate humidity in the use environment, differences in ground flatness, and structural design defects of the floor or the floor and the locking groove connectors during use. When a relatively large load is applied to the front of adjacent floors during actual floor use, it is easy to produce noises. The noise problem causes troubles to floor manufacturing enterprises, traders, installation after-sales service personnel, and consumers. And due to the after-sales service caused by the noise problem generated during floor use, since the judgment responsibility standard cannot be unified, it often results in user complaints and even lawsuits. Therefore, in 2006, China introduced and revised in 2018 the national standard GB / T20238-2018 "Code for Installation, Acceptance and Use of Wood Flooring in the People's Republic of China", which made detailed regulations on the installation, acceptance and use specifications of floating installation of wood floors. Among them, Article 6 of this standard: Requirements for Floating Method Floor Installation and Completion Acceptance. The ground requirement for floating installation of wood floors in this standard clause is: Use a 2m straightedge to detect the ground flatness, and the maximum chord height between the straightedge and the ground should be ≤ 3mm (see other specified clauses in Article 6.2.2 of the national standard GB / T20238-2018 for details). This standard requires that the ground flatness must meet the requirements of this standard before floor installation. Article 6.2.5.The regulations on abnormal noises generated by the floor during use are as follows: abnormal noises are not obvious in the main walking areas; allowing unobvious abnormal noises in the main walking areas under such strict floor flatness requirements is based on the fact that such problems are widespread in the existing technologies and there is no effective technical solution to address them; moreover, it is still difficult to handle such abnormal noise problems in after-sales services during actual operations. Therefore, relevant enterprises have also made technical improvements. For example, paraffin wax coating technology is adopted at the joint of the male tenon and female groove of the existing floor to enhance the lubrication effect of the joint part of the male tenon and female groove, thereby reducing the friction coefficient of the joint part of the male tenon and female groove, and thus reducing the noise generated when the joint of the male tenon and female groove rotates and / or moves during walking and trampling on the front surface of the floor. Some other enterprises use diaphragm made of polypropylene, polytetrafluoroethylene or polyvinyl chloride with a thickness within 0.5 mm and set it between the male tenon and female tenon to reduce noise. For instance, Darya (Jiangsu) Floor Co., Ltd., one of the enterprises using the inclined plug-in lock technology, applied for and obtained the utility model patent CN208668859U "Locking device for reducing noise of lock floor" in 2018. However, practice has proved that the known embodiments do not always work smoothly, and the noise problem is actually difficult to keep under control. Therefore, relevant enterprises choose to bond the bottom surface of the floor to the ground with glue. In fact, bonding the bottom surface of the floor to the ground with glue strengthens the locking strength in the vertical direction on the floor surface and the locking strength in the horizontal direction on the side of the floor for adjacent floors, especially the strengthening of the locking strength in the vertical direction on the floor surface, thereby reducing the noise problem generated during walking and trampling on the floor surface. However, the disadvantages of installing lock floors by pasting them to the ground with glue are also obvious: first, due to the large amount of glue used, the installation process is numerous and cumbersome, and the installation efficiency is extremely low, thus increasing the material cost and labor cost of installing the floor; second, since the glue contains some volatile substances, it is not beneficial to human health; third, after installing the floor by pasting with glue, once there are scratches or other damages on the floor surface during use, it is extremely difficult to replace such glued floors during later maintenance, and it is also easy to cause damage to the self-leveling layer of the ground and other undamaged floors.

[0026] The construction of a safety locking system with high locking strength is conceivable, and the design ability to connect the floor is actually infinite. Continuing to use rigid locking connectors can not only achieve the installation method of vertical installation, enabling the locking technology to be applied to various special-shaped patterns such as triangles, parallelograms, hexagons, and curved sides. The rigid material characteristics of the rigid locking connectors also make the floor and the locking connectors very stable in the inlay fit, and the service life is very long. In addition to these advantages, there is still room for improvement in the rigid locking connectors and the floor used in conjunction with the rigid locking connectors. For example, when the floor bears a relatively large load, the rigid locking connectors fixed in the female groove of the floor cannot be stabilized at a certain angle, causing the locking parts to easily rotate; in addition, the technical solution of pre-hanging the rigid locking connectors and the floor before installation can still be further improved, making the rigid locking connectors not easily fall off from the pre-hung state of the female groove of the floor. In addition, some technical advantages of these locking systems, such as the strong locking strength in the vertical direction of the front of the floor, have not been fully utilized. There is still room for further improvement, especially in a wooden floor system that is prone to deformation under climate changes, such as changes in humidity in the floor use environment. In addition, there is also the possibility of further improving the inlay decoration of other auxiliary materials for personalized needs. For example, without changing the floor structure, a decorative closing strip can be added between adjacent floors by simply replacing the rigid locking connectors with U-shaped locking connectors with racks. Summary of the Invention

[0027] Aiming at the deficiencies existing in the prior art, the utility model provides a floor fixing component to solve the problems of insufficient locking strength in the vertical direction on the surface of adjacent floors and insufficient horizontal locking strength in the horizontal direction on the side surfaces of adjacent floors in the prior art.

[0028] The utility model further solves the problem that when the floor selects the floating paving method, especially due to insufficient vertical locking strength on the surface of adjacent floors, it is easy to produce noises when the floor surface is pressed.

[0029] The utility model further improves the wooden floor, especially the single-layer wooden floor that is prone to shrinkage or expansion deformation due to humidity changes. Due to the change of climate humidity, the problem that the locking parts are not firmly locked with the floor.

[0030] The utility model solves the problem that external force is required to pre-hang the locking parts with the floor, and it is difficult to accurately position the locking parts pre-hung in the female groove of the floor.

[0031] The utility model further solves the problem that the locking parts pre-hung in the floor groove are easy to fall off during the installation of the floor, thereby further solving the problems of cumbersome floor paving steps, low efficiency, and complex paving technology and disassembly technology.

[0032] The utility model solves the problem that the buckle technology cannot be fully and completely applied to various special-shaped patterns such as triangular, parallelogram, hexagonal and arc-shaped sides.

[0033] The utility model solves the problem of excessive loss of floor materials during production and processing; the utility model solves the problem that the floor installation process is complex and non-professionals cannot install it by themselves.

[0034] The utility model further solves the problems of cumbersome steps for after-sales maintenance and replacement of the floor, low replacement efficiency, and insufficient firmness of the replaced floor.

[0035] The utility model further solves the problem of difficulty in installing a snap strip with decorative beauty between adjacent floors.

[0036] To solve the above technical problems, the first technical solution provided by the utility model is as follows: a floor fixing component, including a floor and a buckle, wherein the side of the floor is provided with a first groove and a lower tenon, the upper part of the first groove is set as an upper convex body, the lower surface of the upper convex body is set as the bottom surface of the upper convex body, the outer end surface of the upper convex body is set as an upper vertical surface, the lower surface of the lower tenon is set as the bottom surface of the lower tenon, the outer end surface of the lower tenon is set as a lower vertical surface, and the inner bottom side wall of the first groove is set as the bottom side wall of the first groove.

[0037] The utility model is further provided that the first groove and the lower tenon are arranged 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 downward and a lower groove with an opening downward are respectively formed on the bottom surface of the upper convex body and the bottom surface of the lower tenon;

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

[0040] The floor further includes a lower bottom cut part, and in the vertical direction and / or position, the lower bottom cut part is in the space part between the bottom surface of the lower tenon and the bottom surface of the floor.

[0041] The bottom surface of the lower tenon and the lower vertical surface are connected to form an inclined surface set as the bottom inclined surface of the lower tenon.

[0042] The lower tenon extends horizontally inward to within the upper vertical surface, that is, extends in the direction and / or position towards the center of the floor.

[0043] The present utility model is further configured such that the locking fastener includes a first lock body, a second lock body, and a toggle lock bar, and the locking fastener is in a long strip shape.

[0044] The present utility model is further configured such that the first lock body includes a first tenon, a first inclined pressing strip, and a limit lock head, and the second lock body includes an upright strip, a second inclined pressing strip, a second bottom plate, and a second clamping strip.

[0045] The present utility model is further configured such that the lower edge of the upright strip placed vertically is connected to one side edge of the second bottom plate placed horizontally in an L shape, the second clamping strip is connected to the upper surface of the other side edge of the second bottom plate, the second inclined pressing strip is placed obliquely, the bottom surface of the second inclined pressing strip is set as the bottom surface of the second inclined pressing strip, the upper edge of the upright strip is connected to the lower edge of the second inclined pressing strip, and with the upright strip as a reference, in the horizontal direction and / or position, the second inclined pressing strip and the second bottom plate are on the same side.

[0046] Further, the first inclined pressing strip is a strip-shaped body placed obliquely, the bottom surface of the first inclined pressing strip is set as the bottom surface of the first inclined pressing strip, the lower edge of the first inclined pressing strip is connected to the upper edge of the upright strip, the first inclined pressing strip and the second inclined pressing strip are connected together in a slightly V shape, the first inclined pressing strip, the second inclined pressing strip, and the upright strip are connected together in a slightly Y shape, one side surface of the first tenon is set as the inner side surface of the first tenon, the bottom side edge of the inner side surface of the first tenon is connected to the upper edge of the first inclined pressing strip, the side surface opposite to the inner side surface of the first tenon is set as the outer side surface of the first tenon, the upper surface of the first tenon is set as the upper surface of the first tenon, the lower surface of the first tenon is set as the bottom surface of the first tenon, and the bottom surface of the first tenon is a clamping surface; the toggle lock bar is a strip-shaped body placed obliquely, the lower edge of the toggle lock bar is connected to the upper edge of the second inclined pressing strip in a slightly V shape, the toggle lock bar and the second inclined pressing strip are connected in a slightly V shape to form an obtuse angle, and the obtuse angle formed by the connection of the toggle lock bar and the second inclined pressing strip faces the second tenon; the second inclined pressing strip, the upright strip, the second bottom plate, and the second clamping strip are connected to each other to form a groove set as the second groove.

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

[0048] The present utility model is further configured such that the second clamping strip includes a second clamping strip inner surface, a second clamping strip upper surface, and a second clamping strip outer surface that are arranged in sequence in the horizontal direction and / or position. The second clamping strip inner surface faces the upright strip. The lower side edge of the second clamping strip inner surface is connected to the upper surface of the second bottom plate. The upper side edge of the second clamping strip inner surface is connected to one side edge of the second clamping strip upper surface. The other side edge of the second clamping strip upper surface is connected to the upper side edge of the second clamping strip outer surface. The lower side edge of the second clamping strip outer surface is connected to the upper surface edge of the second bottom plate. The second clamping strip outer surface can be a flat surface and / or an arc surface, and the second clamping strip inner surface is a clamping surface.

[0049] The present utility model is further configured such that the toggle lock strip is an obliquely placed strip-shaped body. The surface of the toggle lock strip facing the first lock body is set as the upper surface of the toggle lock strip. The other side surface of the toggle lock strip relative to the upper surface of the toggle lock strip is set as the bottom surface of the toggle lock strip. The upper end side surface of the toggle lock strip is set as the upper guiding surface of the toggle lock strip, and the upper guiding surface of the toggle lock strip is an arc surface.

[0050] A slope is formed and connected between the upper surface of the toggle lock strip and the upper side edge of the upper guiding surface of the toggle lock strip, which is set as the abutting surface of the toggle lock strip. The abutting surface of the toggle lock strip is a clamping surface. A slope is formed and connected between the bottom surface of the toggle lock strip and the lower side edge of the upper guiding surface of the toggle lock strip, which is the lower guiding surface of the toggle lock strip.

[0051] A slope is formed and connected between the bottom surface of the toggle lock strip and the bottom surface of the second diagonal pressing strip, which is set as the third guiding surface. The upper side edge of the third guiding surface is connected to the lower side edge of the bottom surface of the toggle lock strip to form a convex strip, which is set as the ninth convex strip. The lower side edge of the third guiding surface is connected to the upper side edge of the bottom surface of the second diagonal pressing strip to form a convex strip, which is set as the tenth convex strip.

[0052] The limit lock head includes a first abutting surface, an inner convex strip of the limit lock head, and an upper surface of the limit lock head. Both the first abutting surface and the upper surface of the limit lock head are clamping surfaces.

[0053] The limit lock head protrudes above the upper surface of the first tenon. In the horizontal direction and / or position, the lower side edge of the first abutting surface is connected to the upper surface of the first tenon. The upper side edge of the first abutting surface and one side edge of the upper surface of the limit lock head are connected to form a convex strip, which is the inner convex strip of the limit lock head. The other side of the upper surface of the limit lock head extends downward and inward in an arc shape and is connected to the upper side edge of the outer side surface of the first tenon. A part of the limit lock head protrudes outside the outer side surface of the first tenon.

[0054] The present utility model is further provided that a slope is formed between the outer edge of the bottom surface of the upper convex body and the lower edge of the upper vertical surface, which is set as the upper slope; a slope is formed between the outer edge of the upper surface of the lower convex tenon and the upper edge of the lower vertical surface, which is set as the lower slope; a rib is formed between the upper edge of the lower slope and the outer edge of the upper surface of the lower convex tenon, which is set as the fourth rib; a rib is formed between the lower slope and the lower vertical surface, which is set as the sixth rib.

[0055] The present utility model is further provided that an elastic adjustment groove is horizontally and inwardly opened on the bottom side wall of the first groove.

[0056] The present utility model is further provided that the upper groove includes a third abutting surface, a fourth abutting surface, the upper surface of the upper groove, the outer rib of the upper groove and the inner rib of the upper groove; the upward extension of the third abutting surface intersects with the upward extension surface of the fourth abutting surface, and a straight line is formed at the intersection; the third abutting surface, the upper surface of the upper groove and the fourth abutting surface are clamping surfaces; the upper surface of the upper groove can be a flat surface 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 a slope, and the upward extension of the upper surface of the upper groove intersects with the upward extension surface of the fourth abutting surface, and a straight line is formed at the intersection.

[0057] A rib is formed between the lower edge of the third abutting surface and the edge of the bottom surface of the upper convex body, which is set as the outer rib of the upper groove; the bottom surface of the upper convex body between this part of the outer rib of the upper groove and the upper slope is set as the outer bottom surface of the upper convex body; the upper edge of the third abutting surface is connected to one edge of the upper surface of the upper groove; the other edge of the upper groove is connected to the upper edge of the fourth abutting surface; a rib is formed between the lower edge of the fourth abutting surface and the edge of the bottom surface of the upper convex body, which is set as the inner rib of the upper groove; the bottom surface of the upper convex body between this part of the inner rib of the upper groove and the upper side edge of the bottom side wall of the first groove is set as the inner bottom surface of the upper convex body.

[0058] The present utility model is further provided that the lower groove is sequentially provided with a lower groove guiding surface, a lower groove outer vertical surface, a lower groove inner slope, the upper surface of the lower groove and a lower groove inner vertical surface in the horizontal direction and / or position from one side of the lower vertical surface to the direction of the bottom side wall of the first groove.

[0059] A slope is formed between the bottom surface of the lower convex tenon and the lower edge of the lower groove outer vertical surface, which is set as the lower groove guiding surface; a slope is formed between the upper edge of the lower groove outer vertical surface and one edge of the upper surface of the lower groove, which is set as the lower groove inner slope; the other edge of the upper surface of the lower groove is connected to the upper end edge of the lower groove inner vertical surface; the lower edge of the lower groove inner vertical surface is connected to the side edge of the bottom surface of the lower convex tenon.

[0060] The present utility model is further configured such that the floor further includes the locking fastener; at least one locking fastener is connected to at least one side portion of the floor, and there is no locking fastener on the opposite side portion of the side portion of the floor where the locking fastener has been provided; and the first lock body of the locking fastener is disposed in the first groove of the floor, the limiting lock head of the locking fastener abuts against the inner bottom surface of the upper convex body, the upper surface of the toggle lock bar abuts against the upper vertical surface, and the second bottom plate, the second clamping bar and the toggle lock bar of the second lock body all protrude outside the upper vertical surface of the floor.

[0061] The locking fastener may be at least one provided on the side surface of the floor, and the length of the locking fastener does not exceed the length between the bottom side walls of the first grooves at both ends of the side of the floor connected to the locking fastener. Preferably, a plurality of locking fasteners with a length of 15 mm - 300 mm are arranged at intervals on at least one side surface of the floor.

[0062] The present utility model is further configured such that the limiting lock head further includes a second abutting surface, the second abutting surface is a clamping surface, and the second abutting surface faces the outside of the first lock body.

[0063] The limiting lock head protrudes on the upper surface of the first tenon between the outer side surface and the inner side surface of the first tenon. The upper side edge of the second abutting surface is connected to one side edge of the upper surface of the limiting lock head. The lower side edge of the second abutting surface is concave towards the limiting lock head and is connected to the upper side edge of the outer side surface of the first tenon to form an arc-shaped groove as the limiting lock head groove. The second abutting surface extends upward and intersects with the upward extending surface of the first abutting surface, and the intersection connection is a straight line.

[0064] The present utility model is further configured such that the first lock body further includes a third rib, and the lower side edge of the first abutting surface is connected to the upper end side edge of the inner side surface of the first tenon to form a rib as the third rib.

[0065] The present utility model is further configured such that the upper groove further includes a third groove, the third groove is a groove with an opening obliquely facing the notch direction of the first groove, and the third groove is provided between the upper groove and the bottom side wall 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, and the third groove abutting surface may be parallel to the front surface of the floor.

[0067] The third groove abutting surface may be a slope relative to the horizontal plane, and the third groove abutting surface inclines downward and towards the outside of the notch of the first groove.

[0068] The present utility model is further configured such that the upper groove further includes an upper bottom cutting surface and a first rib. A plane formed by connecting the lower side edge of the fourth abutting surface and the lower side edge of the third groove abutting surface is the upper bottom cutting surface.

[0069] A rib formed by connecting the third groove abutting surface and the upper bottom cutting surface is a pre - hanging limit rib, and the upper bottom cutting surface can be parallel to the front surface of the floor.

[0070] The upper bottom cutting surface can be an inclined surface relative to the upper surface of the floor, and the upper bottom cutting surface inclines downward towards the bottom surface of the upper convex body.

[0071] A rib formed by connecting one side edge of the upper bottom cutting surface and the lower side edge of the fourth abutting surface is set as the first rib.

[0072] A rib formed by connecting the inclined surface of the third groove and the edge of the bottom surface of the upper convex body is set as the inner rib of the third groove.

[0073] The present utility model is further configured such that on opposite side surfaces of the vertical strip, a first side vertical surface of the vertical strip and a second side vertical surface of the vertical strip are respectively provided, wherein the first side vertical surface of the vertical strip faces the second latch strip.

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

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

[0076] The seventh convex body outer vertical surface is parallel to the eighth convex body outer vertical surface, and the distance D6 between the upper side edge of the seventh convex body lower rib and the lower side edge of the eighth convex body upper rib is ≥ the vertical distance L13 between the seventh convex body outer vertical surface and the eighth convex body outer vertical surface.

[0077] The present utility model is further configured such that when the second bottom plate is placed horizontally, with the vertical center line between the seventh convex body outer vertical surface and the eighth convex body outer vertical surface as the center line, the bottom surfaces of the first inclined pressing strip and the second inclined pressing strip are arranged in a mirror image relationship on the locking part.

[0078] The present utility model is further configured such that the second groove further includes a second groove inner cavity, and the second groove inner cavity is arranged in the spatial part of the projection area on the upper surface of the second bottom plate of the vertical projection of the lower surface of the seventh convex body.

[0079] The present utility model is further configured such that a slope is formed between the lower slope and the lower vertical surface, which is set as the third slope. The upper side edge of the third slope is connected to the lower side edge of the lower slope to form a protruding strip, which is set as the upper protruding strip of the third slope. The lower side edge of the third slope is connected to the upper side edge of the lower vertical surface to form a protruding strip, which is set as the lower protruding strip of the third slope.

[0080] The present utility model is further configured such that the floor further includes a locking member; 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 toggle lock bar abuts against the upper vertical surface of the floor, and the second bottom plate and the second clamping strip of the locking member protrude outside the upper vertical surface of the floor; the locking member can be at least one provided on at least one side surface of the floor, and there is no locking member on the opposite side surface of the side surface of the floor where the locking member has been provided; wherein the length of the locking member does not exceed the length between the adjacent bottom side walls of the first grooves on both sides of the floor connected to the locking member, and preferably, multiple locking members with a length of 15 mm - 300 mm are arranged at intervals on at least one side surface of the floor.

[0081] The present utility model is further configured such that the toggle lock bar abutting surface of the locking member and the upper surface of the toggle lock bar are connected to form a step that is concave towards the bottom surface of the toggle lock bar, which is set as the toggle lock bar support step, and the slope connecting upwards with the toggle lock bar support step is the toggle lock bar abutting surface; the upper surface of the first tenon of the locking member extends outwards and protrudes outside the outer side surface of the first tenon, and the upper surface of the first tenon extending outwards is a slope. The side edge of the upper surface of the first tenon close to the outer side surface of the first tenon is higher than the connection part of the upper surface of the first tenon close to the limiting lock head. The purpose of such a design is to enable the third groove abutting surface of the upper groove of the floor to abut against the upper surface of the first tenon, thereby increasing the connection stability between the locking member and the floor.

[0082] The second technical solution provided by the present utility model is as follows: a third lock body replaces the first lock body of the locking member, and the locking member with the third lock body and without the first lock body is set as the locking member with the third lock body.

[0083] The present utility model is further configured such that the third lock body includes a first bottom plate and a first clamping strip.

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

[0085] The upper surface of the first base plate is on the same plane as the upper surface of the second base plate, and the thickness of the first base plate is the same as that of the second base plate;

[0086] In the horizontal direction and / or position, the first clamping strip is successively provided with a first inner vertical surface of the clamping strip, a first upper inclined surface of the clamping strip, a first upper surface of the clamping strip, and a first outer surface of the clamping strip;

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

[0088] The present utility model is further provided that the floor further includes a third lock body fastener. The third lock body fastener can be at least one provided on one of the opposite side surfaces of the floor, and there is no third lock body fastener on the other side surface of the floor opposite to the fastener of the third lock body. Preferably, the length of the third lock body fastener is 15 mm - 300 mm, and the third lock body fasteners are spaced and provided on at least one side surface of the floor;

[0089] The picklock strip abutting surface of the third lock body fastener abuts against the third abutting surface of the floor. The second inner vertical surface of the clamping strip of the third lock body fastener abuts against the outer vertical surface of the lower groove. The bottom surface of the second inclined pressing strip of the third lock body fastener abuts against the lower inclined surface. The bottom surface of the lower tenon abuts against the upper surface of the second base plate. The first base plate and the first clamping strip of the third lock body fastener protrude outside the lower vertical surface of the floor.

[0090] The present utility model is further provided that the floor further includes the fastener and the third lock body fastener. At least one of each of the fastener and the third lock body fastener is provided on the same side surface of the floor;

[0091] The first abutting surface of the limit lock head of the fastener abuts against the third groove abutting surface. The upper surface of the picklock strip abuts against the upper vertical surface of the floor. The second base plate and the second clamping strip of the fastener protrude outside the upper vertical surface of the floor;

[0092] The abutting surface of the pick-lock bar of the third lock body lock fastener abuts against the third abutting surface, the inner vertical surface of the second locking bar of the third lock body lock fastener abuts against the outer vertical surface of the lower groove, the bottom surface of the second inclined pressing bar of the third lock body lock fastener abuts against the lower inclined surface, the bottom surface of the lower 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 lock fastener protrude outside the lower vertical surface of the floor.

[0093] The present utility model is further provided that the lock fastener has no pick-lock bar, and the lock fastener without the pick-lock bar is defined as a pick-lock-barless lock fastener.

[0094] The present utility model provides the following third technical solution: the lock fastener has no limit lock head, and the lock fastener without the limit lock head is defined as a lock-headless lock fastener;

[0095] A slope is formed and defined as the sixth abutting surface by connecting the upper side edge of the inner side surface of the first tenon of the lock-headless lock fastener and the side edge of the upper surface of the first tenon. A rib is formed by connecting the upper side edge of the sixth abutting surface and the upper surface of the first tenon and is defined as the fifth rib. The sixth abutting surface is a clamping surface, and the upper surface of the first tenon is a clamping surface;

[0096] When the second base plate of the lock-headless lock fastener is in a horizontal state, the upper surface of the first tenon of the lock-headless lock fastener is flush with the pick-lock bar abutting surface in the horizontal direction. The pick-lock bar abutting surface can be a flat surface, and the pick-lock bar abutting surface is parallel to the upper surface of the second base plate.

[0097] The present utility model is further provided that the floor has no upper groove, and the floor without the upper groove is defined as an upper-grooveless floor;

[0098] The upper-grooveless floor further includes the third lock body lock fastener. The third lock body lock fastener is fixed at a certain distance on the side surface of the upper-grooveless floor, and there is no third lock body lock fastener on the opposite side surface of the side surface of the upper-grooveless floor where the third lock body lock fastener is located;

[0099] The third lock body lock fastener further includes an eleventh convex body, and the eleventh convex body further includes an upper surface of the eleventh convex body. The upper surface of the eleventh convex body is a clamping surface.

[0100] The value of the included angle A1 formed by the connection between the upper surface of the second inclined pressure bar of the third lock body lock fastener and the upper surface of the toggle lock bar, which faces the first lock body, is set such that 35° ≤ A1 ≤ 180°. The toggle lock bar abutting surface of the third lock body lock fastener overlaps with the upper surface of the eleventh convex body, and the upper surface of the eleventh convex body includes the toggle lock bar abutting surface. The upper surface of the eleventh convex body is parallel to the upper surface of the second bottom plate.

[0101] The upper surface of the eleventh convex body is parallel to the upper surface of the second bottom plate, and the vertical distance V8 between the horizontal extension line of the upper surface of the eleventh convex body and the horizontal extension line of the upper surface of the second bottom 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 convex body.

[0102] The lockless groove floor further includes the lockless head lock fastener and the third lock body lock fastener. At least one of each of the lockless head lock fastener and the third lock body lock fastener is provided on the same side surface of the lockless groove floor.

[0103] The sixth abutting surface or the fifth convex strip of the lockless head lock fastener abuts against the bottom surface of the upper convex body. The upper surface of the toggle lock bar abuts against the upper vertical surface of the lockless groove floor. The second bottom plate and the second clamping strip of the lockless head lock fastener protrude outside the upper vertical surface of the floor.

[0104] The toggle lock bar abutting surface of the third lock body lock fastener abuts against the third abutting surface of the lockless groove floor. The inner vertical surface of the second clamping strip of the third lock body lock fastener abuts against the outer vertical surface of the lower groove. The bottom surface of the second inclined pressure bar of the third lock body lock fastener abuts against the lower inclined surface. The bottom surface of the lower tenon abuts against the upper surface of the second bottom plate. The first bottom plate and the first clamping strip of the third lock body lock fastener protrude outside the lower vertical surface of the floor.

[0105] The present utility model is further provided such that the side edge of the lockless groove floor is an arc-shaped side edge, and the lockless groove floor with the arc-shaped side edge is set as an arc-shaped side edge floor.

[0106] Furthermore, for the lockless head lock fastener used in cooperation with the arc-shaped side edge floor, a seventh convex body is provided on the first side vertical surface of the upright strip of the lockless head lock fastener, and there is no eighth convex body on one side of the second side vertical surface of the upright strip.

[0107] Furthermore, for the third lock body lock fastener used in cooperation with the arc-shaped side edge floor, there is no seventh convex body on the first side vertical surface of the upright strip, and an eighth convex body is provided on one side of the second side vertical surface of the upright strip.

[0108] The fourth technical solution provided by the present utility model is as follows: the vertical strip is replaced by a U-shaped body with a rack, and the locking part with the U-shaped body with a rack and without the vertical strip is set as a U-shaped rack locking part.

[0109] Furthermore, the U-shaped rack locking part includes the seventh convex body, the eighth convex body, a U-shaped groove and a toothed convex strip.

[0110] The vertical strip of the locking part with the third lock body is replaced by the U-shaped body with a rack, and the locking part with the third lock body with the U-shaped body with a rack and without the vertical strip is set as a U-shaped rack third lock body locking part. The U-shaped rack third lock body locking part includes the seventh convex body, the eighth convex body, a U-shaped groove and a toothed convex strip.

[0111] The present utility model is further provided that a first weight reduction groove is provided on the outer side surface of the first tenon, the first weight reduction groove is slightly trumpet-shaped, and a second weight reduction groove is provided at the upper connection of the first inclined pressing strip and the inner side surface of the first tenon.

[0112] The utility model has the following beneficial effects: Since the first groove and the lower tenon which are used in cooperation with the lock component are uniformly arranged on the side of the floor, and neither the first groove nor the lower tenon protrudes from the board surface of the floor, the male tenon and the female groove of the conventional oblique insertion type lock floor are transformed into the actual usable area, which improves the wood utilization rate, reduces the material cost, protects forest resources, and makes the production process of the floor simple, with high production efficiency and reduced production cost; The lock component is provided with a plurality of anti-rotation structural designs to prevent the lock component from freely rotating in the first groove of the floor, which enhances the locking strength of adjacent floors in the vertical direction. In the case of poor ground flatness, adjacent floors are jointly locked and fixed by the combination of the lock fastener and the third lock body lock fastener. The problem of rotation between the lock fastener and the floor is further improved, the problem of adjacent floors rising and falling is effectively improved, and the horizontal locking of the floor is further improved. The utility model further improves, that is, further reduces the noise problem caused by the insufficient locking strength of adjacent floors in the vertical direction on the floor surface and the insufficient locking strength of adjacent floors in the horizontal direction on the side surface of adjacent floors when the floors are stressed on the floor surface. The utility model provides a lock fastener and a third lock body lock fastener in combination to lock and fix the floor, so that the horizontal directions of the two layers between the upper end of the first groove of the floor and the bottom surface of the lower tenon are simultaneously locked and fixed. Therefore, the problem of height difference between adjacent floors caused by the deformation and distortion of the floor due to the combined action of internal stress of wood and / or environmental humidity and temperature and other factors in wooden floors, especially single-layer wooden floors, is further improved; The technical solution of the utility model can realize the pre-hanging of the lock fastener and the floor without external force, and the pre-hanging of the lock fastener and the floor can be completed without complicated positioning. Non-professionals can quickly and simply complete the operation according to the steps of the drawings or video materials; The utility model further solves the problem of the lock fastener falling off when pre-hung on the first groove; Using the technical solution of the utility model, adjacent floors can be locked and fixed without translation or tilting at a certain angle, but only with a vertical buckling structure design, so that the lock technology can be fully and completely applied to floors with any special-shaped patterns, including floors with arc-shaped sides, such as hexagonal floors, triangular floors, herringbone floors and arc-shaped sides and other special-shaped patterns, and chevron floors do not need to be opened with male and female tenon grooves; Since the technical solution of the utility model does not require horizontal movement of the floor to be installed, but only needs to be vertically pressed to realize the locking and fixing of adjacent floors, the problem of seamless docking between the floor and other parts and accessories is solved in places where seamless docking with other parts and accessories is required, for example, where the skirting board or tiles have been installed; The installation process of the floor and the lock fastener of the utility model is simple and fast, and non-professionals can complete it independently;The present utility model further solves the technical problem of difficult floor repair and replacement. When repairing or replacing the floor, the floor to be replaced can be taken out from any position in the middle of the installed floor by cutting tools or the like. Then, the locking fastener is taken out and pre-hung again in the first groove of the adjacent floor around the removed floor. Then, the floor to be installed is vertically pressed into the position of the removed floor to complete the floor replacement and repair. In addition, when installing the floor, the use of keel, nail materials and glue materials can be avoided, which not only saves the installation material cost, but also saves the labor cost and improves the installation quality. The present utility model further expands personalized products. For example, the receiving strip is embedded between adjacent floors without changing the floor structure, and the receiving strip can be simply added by using a matching locking fastener to replace it, making the overall effect of the floor more beautiful. The locking component of the present utility model has a simple structure, high production efficiency and low manufacturing cost. Because the locking component only needs to use an extrusion die and various extrusion materials such as metals, metal alloys or high-strength non-metallic materials, it can be precision extruded (injected) into shape, and then cut into the required length to process into a locking component. The surface of the finished locking component is smooth and has wide applicability. In particular, the profile of the locking component made of metal materials has high precision, strong durability and stability, making the locking and fixing of the floor and the locking component more firm and stable, and the service life after the locking component is locked and fixed with the floor is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0113] Figure 1-1 It is a cross-sectional view of a flat floor in the background art; Figure 1-2 It is a cross-sectional view of the connection method of the flat floor in the background art; Figure 1-3 It is a cross-sectional view of an obliquely inserted locking fastener in the background art; Figure 1-4 It is a schematic diagram of the sequential installation of obliquely inserted locking floor slabs in the background art; Figure 1-5 It is a cross-sectional view of the connection method of the obliquely inserted locking floor in the background art; Figure 1-6 It is a schematic diagram of two different arrangements of male tenons and female grooves for the herringbone installation of rectangular floors in the background art.

[0114] Figure 2 It is a cross-sectional structural view of the floor of the first preferred embodiment of the present utility model.

[0115] Figure 3 For Figure 2 It is a three-dimensional view of the floor of the first preferred embodiment of the present utility model.

[0116] Figure 4 It is a cross-sectional structural view of the locking fastener of the first preferred embodiment of the present utility model.

[0117] Figure 5 For Figure 4Schematic perspective view of the locking fastener according to the first preferred embodiment of the present utility model.

[0118] Figures 6-1 to 6-5 In the first preferred embodiment of the present utility model Figure 4 Schematic diagram of the installation steps for pre-hanging the locking fastener into the floor 2.

[0119] Figures 7-1 to 7-18 Adjacent to the first preferred embodiment of the present utility model Figure 2 The floor and Figure 4 Schematic diagram of the typical installation steps of the locking fastener.

[0120] Figure 8 Schematic cross-sectional view of the floor in the second preferred embodiment of the present utility model (with a third groove).

[0121] Figure 9 For Figure 8 Schematic perspective view of the floor in the second preferred embodiment of the present utility model (with a third groove).

[0122] Figure 10 Schematic cross-sectional view of the locking fastener in the second preferred embodiment of the present utility model (with a second abutting surface).

[0123] Figure 11 For Figure 10 Schematic perspective view of the locking fastener in the second preferred embodiment of the present utility model (with a second abutting surface).

[0124] Figure 12 Schematic partial enlarged view of the floor in the second preferred embodiment of the present utility model (with angles A5 and A6).

[0125] Figures 13-1 to 13-6 In the second preferred embodiment of the present utility model Figure 10 The locking fastener 3 is set to enter Figure 8 Schematic diagram of the typical installation steps for pre-hanging the floor 2.

[0126] Figures 14-1 to 14-20 In the second preferred embodiment of the present utility model Figure 10 The locking fastener and the adjacent Figure 8 Schematic diagram of the typical installation steps for locking and fixing the floor.

[0127] Figure 15 Schematic cross-sectional structure view of the locking fastener with a third lock body in the third preferred embodiment of the present utility model (with a third lock body and no first lock body).

[0128] Figure 16 For Figure 15 Schematic three-dimensional structure view of the locking fastener with a third lock body in the third preferred embodiment of the present utility model.

[0129] Figures 17-1 to 17-5In the third preferred embodiment of the present utility model Figure 15 The locking fasteners are arranged at intervals and enter Figure 8 The installation step diagram of pre-hanging the floor

[0130] Figures 17-6 to 17-7 In the third preferred embodiment of the present utility model Figure 10 The locking fasteners are arranged to enter the floor that has been pre-hung Figure 15 of the locking fasteners Figure 8 on the same side of the floor for pre-hanging

[0131] Figures 17-8 to 17-10 In the third preferred embodiment of the present utility model, adjacent Figure 8 floors and Figure 15 locking fasteners and Figure 10 The combined locking fasteners jointly implement the locking and fixing schematic diagram

[0132] Figure 18 Cross-sectional structure schematic diagram of the locking fastener (without a limiting lock head) in the fourth preferred embodiment of the present utility model

[0133] Figure 19 Cross-sectional schematic diagram of the floor (without an upper groove) in the fourth preferred embodiment of the present utility model

[0134] Figures 20-1 to 20-2 Cross-sectional schematic diagram of the locking fastener (with a third lock body and an eleventh convex body but without a first lock body) in the fourth preferred embodiment of the present utility model

[0135] Figures 21-1 to 21-5 In the fourth preferred embodiment of the present utility model Figure 20-1 The locking fasteners are arranged at intervals and enter Figure 19 The installation step diagram of pre-hanging the floor

[0136] Figures 21-6 to 21-7 In the fourth preferred embodiment of the present utility model Figure 18 The locking fasteners are arranged to enter the floor that has been pre-hung Figure 20-1 of the locking fasteners Figure 19 Schematic diagram of pre-hanging installation on the same side of the floor

[0137] Figures 22-1 to 22-4 In the fourth preferred embodiment of the present utility model Figure 18 locking fasteners and Figure 20-1 The combined locking fasteners are used together to jointly implement the locking and fixing of adjacent Figure 19 Typical installation step diagram of the floor

[0138] Figure 23-1 And Figure 23-2 Schematic diagram of the splicing of the arc-side floor in the fifth preferred embodiment of the present utility model

[0139] Figure 23-3This is the fifth preferred embodiment of the utility model, a lock fastener (with a seventh convex body, no limit lock head, and no eighth convex body).

[0140] Figure 23-4 This is the fifth preferred embodiment of the utility model, a lock fastener with a third lock body (with an eighth convex body, no seventh convex body, and no limit lock head).

[0141] Figures 23-5 - 23-18 This is the fifth preferred embodiment of the utility model, the arc-shaped side floor and Figure 23-3 the lock fastener and Figure 23-4 the combination method and typical installation steps schematic diagram of the lock fastener with a third lock body.

[0142] Figures 24-1 to 24-7 This is the sixth preferred embodiment of the utility model, using a lock fastener with a third lock body (with an extension plate) and Figure 10 the combination use of the lock fastener will Figure 8 the installation steps and method schematic diagram of the floor on the keel.

[0143] Figures 25-1 to 25-6 This is the seventh preferred embodiment of the utility model, using a lock fastener with a third lock body (with an extension plate) and Figure 10 the combination use of the lock fastener will Figure 8 the cross-sectional structure schematic diagram of the floor used as a wall panel locked and fixed on the wall.

[0144] Figure 25-7 This is the seventh preferred embodiment of the utility model, using a lock fastener with a third lock body (with an extension plate) and Figure 10 the combination use of the lock fastener in the middle will Figure 8 the cross-sectional structure schematic diagram of the floor used as a stair plate locked and fixed on the stair base layer in the middle.

[0145] Figure 25-8 This is the seventh preferred embodiment of the utility model Figure 25-7 partial enlarged schematic diagram.

[0146] Figures 26-1 to 26-9 This is the eighth preferred embodiment of the utility model Figure 8 the floor in the middle and Figure 10 the installation, disassembly, repair, replacement method and installation steps diagram of the lock fastener in the middle after installation.

[0147] Figures 27-1 to 27-6 This is the ninth preferred embodiment of the utility model Figure 8 the floor in the middle and Figure 10 the schematic diagram of the lock fastener in the middle applied to rectangular and various straight-shaped special-shaped patterns.

[0148] Figure 28-1 This is the cross-sectional structure schematic diagram of the U-shaped rack lock fastener in the tenth preferred embodiment of the utility model (with a U-shaped body with a rack and no vertical strip).

[0149] Figure 28-2 Cross-sectional structure schematic diagram of the third lock body lock fastener with a U-shaped rack in the tenth preferred embodiment of the present utility model (U-shaped body with a rack and no vertical strip).

[0150] Figure 28-3 Cross-sectional structure schematic diagram of the buckle strip in the tenth preferred embodiment of the present utility model.

[0151] Figure 28-4 Cross-sectional structure schematic diagram of the elastic clip in the tenth preferred embodiment of the present utility model.

[0152] Figures 28-5 to 28-8 In the tenth preferred embodiment of the present utility model Figure 28-1 with a U-shaped rack lock fastener, Figure 28-3 with a buckle strip in Figure 28-4 and cross-sectional schematic diagram of the typical installation steps of the elastic clip in.

[0153] Figure 28-9 In the tenth preferred embodiment of the present utility model Figure 28-1 with a U-shaped rack lock fastener and Figure 28-2 with the combined use of the third lock body lock fastener with a U-shaped rack and Figure 28-3 with a buckle strip in Figure 28-4 and cross-sectional schematic diagram of the completion step of locking with the elastic clip in. Figure 28-10 Schematic diagram of the strip-shaped buckle of the buckle strip covering the front surfaces of adjacent floors 2a and 2b.

[0154] Figures 29-1 to 29-4 Cross-sectional structure schematic diagram of the composition structure of part of the wood materials of the present utility model.

[0155] Figure 30 For the present utility model Figure 8 with adjacent floors and Figure 10 cross-sectional schematic diagram of the completion of locking and fixing of the lock fastener in (with the first weight reduction groove and the second weight reduction groove).

[0156] Reference numerals include: floor 2, first groove 20, lower tenon 22, upper convex body 21, bottom surface of upper convex body 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 rib 226, sixth rib 2251, third abutting surface 2021, fourth abutting surface 2022, upper surface of upper groove 2023, outer rib of upper groove 2024, inner rib of upper groove 2025, outer bottom surface of upper convex body 2112, inner bottom surface of upper convex body 2113, guiding surface of lower groove 2231, outer vertical surface of lower groove 2232, inner inclined surface of lower groove 2235, upper surface of lower groove 2233, inner side surface of lower groove 2234, locking fastener 3, first lock body 31, second lock body 32, toggle lock bar 33, first tenon 311, first diagonal pressure bar 312, limit lock head 313, vertical bar 321, second diagonal pressure bar 322, second bottom plate 323, second clamping bar 324, bottom surface of second diagonal pressure bar 3221, bottom surface of first diagonal pressure bar 3121, upper surface of first tenon 3111, bottom surface of first tenon 3112, inner side surface of first tenon 3113, outer side surface of first tenon 3114, second groove 325, rotating rib 314, second rib 315, inner vertical surface of second clamping bar 3241, upper surface of second clamping bar 3242, outer surface of second clamping bar 3243, upper surface of toggle lock bar 331, bottom surface of toggle lock bar 332, upper guiding surface of toggle lock bar 333, abutting surface of toggle lock bar 334, lower guiding surface of toggle lock bar 335, third guiding surface 336, ninth rib 337, tenth rib 338, first abutting surface 3131, inner rib of limit lock head 3135, upper surface of limit lock head 3132, third groove 205, first rib 206, abutting surface of third groove 2051, bottom surface of third groove 2052, inclined surface of third groove 2053, upper bottom cut surface 207, pre-hanging limit rib 2055, upper inclined surface upper rib 2131, elastic adjustment groove 204, third inclined surface 227, third inclined surface upper rib 228, third inclined surface lower rib 229, inner rib of third groove 2054, second abutting surface 3133, groove of limit lock head 3134, third rib 3115, seventh convex body 3211, eighth convex body 3212, outer vertical surface of seventh convex body 3213, lower rib of seventh convex body 3215, lower surface of seventh convex body 3217, upper rib of eighth convex body 3214, outer vertical surface of eighth convex body 3216, inner cavity of second groove 3251, bottom inclined surface of lower tenon 2249, third lock body 34, third lock body locking fastener 3", first bottom plate 342, first clamping bar 343, inner vertical surface of first clamping bar 3431, upper inclined surface of first clamping bar 3432, upper surface of first clamping bar 3433, outer surface of first clamping bar 3434, lockless locking fastener 3, sixth abutting surface 351, fifth rib 352, floor without upper groove 2, pre-hanging limit rib 2055Third groove inner convex strip 2054, first side elevation of the vertical strip 3227, second side elevation of the vertical strip 3228, arc-shaped side floor 2, U-shaped body with rack 70, U-shaped rack lock fastener 3, U-shaped groove 702, toothed convex strip 701, third lock body lock fastener of U-shaped rack 3", support step of the toggle lock strip 3341, lock fastener without toggle lock strip 3, receiving buckle strip 80, elastic clip 90, strip-shaped buckle strip 801, lower rack 802, upper toothed card slot 901, lower toothed convex strip 902, inclined abutment surface of the elastic clip 903, extension plate 3425, eleventh convex body 3321, upper surface of the eleventh convex body 3323, first weight reduction groove 361, second weight reduction groove 362. Detailed implementation manners

[0157] The following combines the drawings in the preferred embodiments of the present invention to clearly and completely describe the technical solutions in the preferred embodiments of the present invention. Obviously, the described preferred embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0158] The locking method of the present invention can be a mechanical locking method.

[0159] The vertical (horizontal) locking of the floor described in the preferred embodiment of the present invention refers to locking and fixing the floor in the vertical (horizontal) direction with the front surface of the floor (the side surface of the floor in the horizontal direction). Taking adjacent floors as an example, it is the edge part of two adjacent floors, and the floors can be vertically and horizontally locked and fixed in the assembled state.

[0160] Generally, terms such as "upward" in this text refer to the direction or position towards the front surface of the floor, while terms such as "downward" refer to the direction or position towards the bottom surface of the floor.

[0161] The first preferred embodiment of the present invention:

[0162] As shown in the attached Figure 2 and the attached Figure 3 shown, where the attached Figure 2 shown is a cross-sectional structure diagram of the floor 2 of the first preferred embodiment of the present invention, and the attached Figure 3 is a three-dimensional structure diagram of the floor 2. A first groove 20 and a lower tenon 22 are provided on the same side surface of the floor 2. The upper end part of the first groove 20 is provided as an upper convex body 21. The lower surface of the upper convex body 21 is provided as the bottom surface 211 of the upper convex body. The outer end surface of the upper convex body 21 is provided as an upper elevation 212. The lower surface of the first groove 20 is provided as the bottom surface 203 of the first groove. The inner bottom surface of the first groove 20 is provided as the bottom side wall 201 of the first groove.

[0163] In the vertical direction, the first groove 20 is above the lower tenon 22. The upper surface of the lower tenon 22 is defined as the upper surface 221 of the lower tenon, the lower surface of the lower tenon 22 is defined as the bottom surface 224 of the lower tenon, the outer end surface of the lower tenon 22 is defined as the lower vertical surface 222, and the bottom surface 203 of the first groove overlaps with the upper surface 221 of the lower tenon.

[0164] The lower tenon 22 extends horizontally inward within the upper vertical surface 212, that is, extends in the direction and / or position towards the center of the floor 2.

[0165] In the vertical direction, between the bottom surface 224 of the lower tenon and the bottom surface of the floor 2 is the lower bottom cut portion 230.

[0166] The present utility model is further provided that an upper groove 202 with an opening downward is provided on the bottom surface 211 of the upper convex body, and a lower groove 223 with an opening downward is provided on the bottom surface 224 of the lower tenon.

[0167] A slope is formed between the outer edge along of the bottom surface 211 of the upper convex body and the lower edge along of the upper vertical surface 212, which is defined as the upper slope 213. A slope is formed between the outer edge along of the upper surface 221 of the lower tenon and the upper edge along of the lower vertical surface 222, which is the lower slope 225. The upper edge along of the lower slope 225 is connected to the outer edge along of the upper surface 221 of the lower tenon to form a rib, which is defined as the fourth rib 226. The lower edge along of the lower slope 225 is connected to the upper edge along of the lower vertical surface 222 to form a rib, which is defined as the sixth rib 2251.

[0168] The upper groove 202 includes a third abutting surface 2021, a fourth abutting surface 2022, the upper surface 2023 of the upper groove, the outer rib 2024 of the upper groove, and the inner rib 2025 of the upper groove. Among them, the third abutting surface 2021 extends upward and intersects with the upward extending surface of the fourth abutting surface 2022, and a straight line is formed at the intersection connection. The third abutting surface 2021 and the upper surface 2023 of the upper groove are clamping surfaces, and the upper surface 2023 of the upper groove can be a flat surface or an arc surface;

[0169] Among them, the lower edge along of the third abutting surface 2021 is connected to the edge of the bottom surface 211 of the upper convex body to form a rib, which is the outer rib 2024 of the upper groove. The upper edge along of the third abutting 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 along of the fourth abutting surface 2022. The lower edge along of the fourth abutting surface 2022 is connected to the edge of the bottom surface 211 of the upper convex body to form a rib, which is the inner rib 2025 of the upper groove.

[0170] This part of the bottom surface 211 of the upper convex body between the upper groove 202 and the upper slope 213 is defined as the outer bottom surface 2112 of the upper convex body; this part of 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 defined as the inner bottom surface 2113 of the upper convex body.

[0171] The lower groove 223 is sequentially provided with a lower groove guiding surface 2231, a lower groove outer surface 2232, a lower groove inner inclined surface 2235, a lower groove upper surface 2233 and a lower groove inner side surface 2234 from one side of the lower vertical surface 222 towards the first groove bottom side wall 201 in the horizontal direction and / or position.

[0172] Wherein, the lower convex tenon bottom surface 224 and the lower side edge of the lower groove outer surface 2232 are connected to form an inclined surface which is the lower groove guiding surface 2231, the upper side edge of the lower groove outer surface 2232 and one side edge of the lower groove upper surface 2233 are connected to form an inclined surface which is the lower groove inner inclined surface 2235, the other side edge of the lower groove upper surface 2233 is connected to the upper end side edge of the lower groove inner side surface 2234, the lower side edge of the lower groove inner side surface 2234 is connected to the inner side edge of the lower convex tenon bottom surface 224, and on the upper side edge of the lower groove outer surface 2232.

[0173] In the present utility model, as shown in the attached Figure 4 and the attached Figure 5 figures. As shown in the attached Figure 4 figures is a schematic cross-sectional structure diagram of the lock fastener 3 of the first preferred embodiment of the present utility model, and as shown in the attached Figure 5 figures is a schematic three-dimensional structure diagram of the lock fastener 3. The lock fastener 3 of the present utility model is in a long strip shape, and when viewed from the cross-section, the middle part of the lock fastener 3 is slightly in a Y shape connecting the first lock body 31, the second lock body 32 and the toggle lock bar 33.

[0174] The first lock body 31 includes a first convex tenon 311, a first inclined pressure bar 312 and a limit lock head 313, and the second lock body 32 includes a vertical strip 321, a second inclined pressure bar 322, a second bottom plate 323 and a second clamping bar 324.

[0175] The lower end edge of the vertically placed vertical strip 321 and one side edge of the horizontally placed second bottom plate 323 are connected together in an L shape, the second clamping bar 324 is connected to the upper surface of the other side edge of the second bottom plate 323, the second inclined pressure bar 322 is placed obliquely, the bottom surface of the second inclined pressure bar 322 is set as the second inclined pressure bar bottom surface 3221, and the upper end edge of the vertical strip 321 is connected to the lower end edge of the second inclined pressure bar 322. With the vertical strip 321 as a reference, in the horizontal direction and / or position, the second inclined pressure bar 322 and the second bottom plate 323 are on the same side.

[0176] The first diagonal compression bar 312 is a strip-shaped body placed obliquely. The bottom surface of the first diagonal compression bar 312 is set as the bottom surface 3121 of the first diagonal compression bar. The lower edge of the first diagonal compression bar 312 is connected to the upper edge of the vertical bar 321. The first diagonal compression bar 312 and the second diagonal compression bar 322 are connected together in a slightly V-shaped manner. The first diagonal compression bar 312, the second diagonal compression bar 322, and the vertical bar 321 are connected together in a slightly Y-shaped manner. The upper surface of the first tenon 311 is set as the upper surface 3111 of the first tenon. The bottom surface of the first tenon 311 is set as the bottom surface 3112 of the first tenon. One side surface of the first tenon 311 is set as the inner side surface 3113 of the first tenon. The side surface opposite to the inner side surface of the first tenon is set as the outer side surface 3114 of the first tenon. The bottom side edge of the inner side surface 3113 of the first tenon is connected to the upper edge of the first diagonal compression bar 312. The bottom surface 3112 of the first tenon is a clamping surface.

[0177] The toggle lock bar 33 is a strip-shaped body placed obliquely. The lower edge of the toggle lock bar 33 is connected to the upper edge of the second diagonal compression bar 322 in a slightly V-shaped manner. The toggle lock bar 33 and the second diagonal compression bar 322 are connected in a slightly V-shaped manner to form an obtuse angle A1. The obtuse angle A1 formed by the connection of the toggle lock bar 33 and the second diagonal compression bar 322 faces the side of the first tenon 311.

[0178] The second diagonal compression bar 322, the vertical bar 321, the second bottom plate 323, and the second clamping bar 324 are connected to each other to form a groove set as the second groove 325.

[0179] A convex strip is formed by connecting between one side edge of the bottom surface 3112 of the first tenon and the lower side edge of the outer side surface 3114 of the first tenon, which is set as the rotating convex strip 314. A convex strip is formed by connecting between the side edge of the upper surface 3111 of the first tenon and the upper side edge of the inner side surface 3113 of the first tenon, which is set as the second convex strip 315.

[0180] The second clamping bar 324 includes the inner vertical surface 3241, the upper surface 3242, and the outer surface 3243 of the second clamping bar arranged in sequence in the horizontal direction and / or position. The inner vertical surface 3241 of the second clamping bar faces the vertical bar 321. The lower side edge of the inner vertical surface 3241 of the second clamping bar is connected to the upper surface of the second bottom plate 323. The upper side edge of the inner vertical surface 3241 of the second clamping bar is connected to one side edge of the upper surface 3242 of the second clamping bar. The other side edge of the upper surface 3242 of the second clamping bar is connected to the upper side edge of the outer surface 3243 of the second clamping bar. The lower side edge of the outer surface 3243 of the second clamping bar is connected to the upper surface edge of the second bottom plate 323. The inner vertical surface 3241 of the second clamping bar is a clamping surface.

[0181] The surface of the paddle lock bar 33 facing the first lock body 31 is defined as the upper surface 331 of the paddle lock bar. The other side surface of the paddle lock bar 33 opposite to the upper surface 331 of the paddle lock bar is defined as the bottom surface 332 of the paddle lock bar. The surface at the upper edge of the upper end of the paddle lock bar is set as the upper guiding surface 333 of the paddle lock bar. The upper guiding surface 333 of the paddle lock bar is an arc surface in the first preferred embodiment of the present invention.

[0182] A slope is formed and set as the abutting surface 334 of the paddle lock bar between the upper surface 331 of the paddle lock bar and the upper side edge of the upper guiding surface 333 of the paddle lock bar. The abutting surface 334 of the paddle lock bar is a clamping surface. A slope is formed between the bottom surface 332 of the paddle lock bar and the lower side edge of the upper guiding surface 333 of the paddle lock bar and is set as the lower guiding surface 335 of the paddle lock bar.

[0183] The bottom surface 332 of the paddle lock bar is connected to the bottom surface 3221 of the second inclined pressure bar to form a slope and is set as the third guiding surface 336. The upper side edge of the third guiding surface 336 is connected to the lower side edge of the bottom surface 332 of the paddle lock bar to form a convex strip and is set as the ninth convex strip 337. The lower side edge of the third guiding surface 336 is connected to the bottom surface 3221 of the second inclined pressure bar to form a convex strip and is set as the tenth convex strip 338.

[0184] The limit lock head 313 includes a first abutting surface 3131, a limit lock head inner convex strip 3135 and an upper surface 3132 of the limit lock head. The first abutting surface 3131 and the upper surface 3132 of the limit lock head are clamping surfaces.

[0185] The limit lock head 313 protrudes on the upper surface 3111 of the first tenon. The outer side surface 3114 of the first tenon extends upward and intersects with the upward extending surface of the first abutting surface 3131, and the intersection is a straight line. The lower side edge of the first abutting surface 3131 is connected to the upper surface 3111 of the first tenon. The upper side edge of the first abutting surface 3131 is connected to one side edge of the upper surface 3132 of the limit lock head to form a convex strip as the limit lock head inner convex strip 3135. The other side of the upper surface 3132 of the limit lock head extends downward in an arc and is connected to the upper side edge of the outer side surface 3114 of the first tenon. Horizontally and / or in terms of position, the limit lock head 313 has a part protruding from the outer side surface 3114 of the first tenon.

[0186] In the present invention, as shown in the attached Figure 6-1 to the attached Figure 6-5 The following shows the typical installation steps of the lock fastener shown in the attached Figure 4 diagram when it is set to enter the first groove 20 of the floor 2 for pre - hanging:

[0187] 1.1.1), as shown in the attached Figure 6-1 diagram, first tilt the lock fastener 3 at a certain angle so that the second convex strip 315 abuts against the outer bottom surface 2112 of the upper convex body of the floor 2, and move the first lock body 31 in the direction of arrow A11;

[0188] 1.1.2), as shown in the appendix Figure 6-2 As shown, make the bottom of the rotating rib 314 higher than or flush with the upper surface of the lower tenon 221 in the vertical direction. The first lock body 31 moves along the outer bottom surface 2112 of the upper convex body towards the side wall of the bottom of the first groove 201 in the direction of arrow A11, so that the second rib 315 enters the upper groove 202 through the outer rib 2024 of the upper groove;

[0189] 1.1.3), as shown in the appendix Figure 6-3 As shown, the rotating rib 314 abuts against the upper surface of the lower tenon 221. Rotate the first lock body 31 around the support point S5 where the rotating rib 314 abuts against the upper surface of the lower tenon 221 in the first groove 20 in the direction of arrow A12. It should be further noted that during the rotation of the first lock body 31, the first lock body 31 will move towards the side wall of the bottom of the first groove 20 while rotating into the first groove 20 along the upper surface of the lower tenon 221, so that the support point S5 where the first lock body 31 rotates is not limited to the current horizontal position point. Therefore, "support point S5" can also be extended to "support area S5"; make the extension line H1 of the upper end surface of the second rib 315 exceed the extension line HP1 of the bottom surface of the upper convex body 211, and at the same time make the extension line H2 of the highest point of the inner rib 3135 of the limit lock head 313 not exceed the extension line HP1 of the bottom surface of the upper convex body 211. While the first lock body 31 moves along the upper surface of the lower tenon 221 in the direction of arrow A11, gradually rotate the lock fastener 3 in the direction of arrow A12, so that the limit lock head 313 slides over the inner rib 2025 of the upper groove;

[0190] 1.1.4), as shown in the appendix Figure 6-4 As shown, the inner rib 3135 of the limit lock head abuts against the inner bottom surface 2113 of the upper convex body, the upper surface of the toggle lock bar 331 abuts against the upper vertical surface 212, and the pre-hanging of the lock fastener 3 into the floor 2 is completed. There are two points to note. The lock fastener 3 is inclined and pre-set in the first groove 20 of the floor 2. When the lock fastener 3 is set in the first groove 20 on one side of the floor 2, the lock fastener 3 is not set in the first groove 20 on the opposite side of the floor where there is the lock fastener 3. For the specific three-dimensional schematic diagram, see Figure 6-5 As shown, the lock fastener 3 is set in the first grooves 20 on the two adjacent sides S1 and S2 of the floor 2, while there is no lock fastener 3 on the opposite sides S3 and S4 of the floor 2 relative to the two adjacent sides S1 and S2 of the floor 2. Secondly, it should be noted that for the purpose of setting the upper inclined surface 213 at the connection between the bottom surface 211 of the upper convex body and the upper vertical surface 212, see Figure 6-4As shown, when the upper surface 331 of the toggle lock bar coincides with the upper vertical surface 212 of the floor 2, in order to increase the connection strength between the toggle lock bar 33 and the second diagonal pressing bar 322, and to meet the requirement that the thickness of the second diagonal pressing bar 322 of the lock fastener 3 does not deform or bend during the locking process, the upper inclined surface 213 is provided so that the area where the dotted first triangular block C11 is located becomes a part of the second diagonal pressing bar 322, making it not easy for the lock fastener 3 to deform or bend during the locking and fixing process.

[0191] In the present utility model, as shown in the attached Figure 2 figure, the floor further includes a lock fastener 43 as shown in the attached Figure 4 figure.

[0192] At least one side edge of the floor 2 is connected to at least one of the lock fasteners 3, and there is no lock fastener 3 on the opposite side edge of the floor where the lock fastener 3 has been set; the lock fastener 3 is inclined and the first lock body 31 is arranged in the first groove 20 of the floor 2, the inner convex strip 3135 of the limit lock head of the lock fastener 3 abuts against the inner bottom surface 2113 of the upper convex body, the upper surface 331 of the toggle lock bar abuts against the upper vertical surface 212, and the second bottom plate 323, the second clamping strip 324 of the second lock body 32 and the toggle lock bar 33 all protrude outside the upper vertical surface 212 of the floor 2.

[0193] In the first preferred embodiment of the present utility model, there is no need to apply external force to squeeze or forcefully move the positioning lock fastener 3 to implement the pre-hung lock fastener 3 in the first groove 20 of the floor 2.

[0194] It should be specifically noted that all the lock fasteners 3 in the present utility model or other lock fasteners mentioned subsequently are rigid lock fasteners. Regarding the rotation and deformation description during the locking and fixing process of the lock fastener 3 with the floor 2, the description that there is no deformation or no bending means that after the lock fastener 3 is locked with the adjacent floor, the cooperation of the mutually cooperating characteristic devices can still meet the actual use requirements.

[0195] In the present utility model, as shown in the attached Figure 7-1 figure to the attached Figure 7-18 figure shows a schematic diagram of the typical steps of the installation and locking and fixing of the lock fastener 3 with the floor 2a and the floor 2b after the lock fastener 3 is set and enters the pre-hung floor 2a in the first preferred embodiment of the present utility model. Since the present utility model can implement the relative displacement of the upper vertical surface 212a of the floor 2a and the upper vertical surface 212b of the floor 2b in the same vertical plane for installation, the first preferred embodiment sets the VP vertical center plane as the coincidence plane where the upper vertical surfaces 212 of the adjacent floors 2 abut against each other, and makes the upper floor 2b relative to the floor 2a displace downward along the VP vertical center plane, so as to further illustrate the typical installation steps of the present utility model that do not require prior horizontal movement and only involve vertical relative displacement:

[0196] 1.2.1), as shown in the appendix Figure 7-1 ; the locking fastener 3 has been set in the first side groove 20a of the floor 2a. Horizontally, the second bottom plate 323 and the second clamping strip 324 of the locking fastener 3 protrude outside the upper vertical surface 212a of the floor 2a, and the upper vertical surface 212b of the floor 2b is overlapped with the VP vertical center plane; it should be noted here that, as shown in the appendix Figure 7-2 ; when the floor 2b is installed with the floor 2a, if the floor 2b on one side of the connection between the floor 2b and the floor 2a has no connection with other floors 2 on the other side, it is not necessary to overlap the upper vertical surface 212b of the floor 2b with the VP vertical center plane for installation. There is a C12 gap between the floor 2b and the VP vertical center line, and the installation and locking process between the floor 2b and the floor 2a is allowed; as shown in the appendix Figure 7-3 ; when the opposite sides of the floor 2b are simultaneously locked and fixed with the floor 2a and the floor 2c, the upper vertical surfaces 212b on the opposite sides of the floor 2b must coincide with the VP vertical center planes on both sides for locking installation;

[0197] The purpose of setting the VP vertical center plane and using it as the central coordinate of the relative displacement of adjacent floors 2 in each step showing the locking installation steps of two adjacent floors 2 is to enable those of ordinary skill in the art to know how to fully implement the vertical installation technology, so that those of ordinary skill in the art will have no obstacle in applying the locking technology during subsequent implementation processes, such as replacing and installing a new floor in the middle position of the floor 2 or developing various special-shaped products. Therefore, products with various patterns can be developed;

[0198] As shown in the appendix Figure 7-1 ; another purpose of forming the upper inclined surface 213b at the connection between the bottom surface 211b of the upper convex body and the upper vertical surface 212b is that when the adjacent floor 2b is displaced downward in the vertical direction, the upper inclined surface 213b of the floor 2b may touch the outer edge of the front surface of the floor 2a and still be able to displace downward smoothly;

[0199] Therefore, when installing the floor 2b piece by piece, only need to directly hook the lower groove 223b on the second clamping strip 324 of the locking fastener 3. At this time, the upper surface 2233b of the lower groove abuts against the outer surface 3243 of the second clamping strip 324 of the second clamping strip, and the outer part of the lower tenon 22b falls into the second groove 325;

[0200] As shown in the appendix Figure 7-4As shown, it should be noted that in the vertical direction and / or position, a third guiding surface 336 is connected and arranged along the upper side edge of the bottom surface 3221 of the second diagonal pressure bar and the lower side edge of the bottom surface 332 of the toggle lock bar. The purpose of the ninth rib 337 and the tenth rib 338 connected to the third guiding surface 336 is that, on the premise of ensuring that the locking process of the locking part 3 does not deform, the second triangular block C13 (dotted line) of the locking part 3 is appropriately removed, and the locking strength of the locking part 3 will not be affected. In this way, the sixth rib 2251b can fall below the ninth rib 337 to prevent the locking part 3 and the floor 2b from being squeezed against each other during the locking installation rotation process, causing deformation of the second diagonal pressure bar 322 of the locking part 3 and / or extrusion damage to the sixth rib 2251b of the floor 2b.

[0201] As shown in the appendix Figure 7-4 As shown, if the position of the bottom surface 224b of the lower tenon in the vertical direction remains unchanged 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 rib 2251b abuts against the vertical surface of the second triangular block C13 (dotted line); it is not difficult to see that even without the second triangular block C13 (dotted line), the sixth rib 2251bd (dotted line part) is still above the ninth rib 337. To give priority to maintaining the strength of the locking part 3, if the third guiding surface 336 cannot be further adjusted to make the sixth rib 2251bd fall below the ninth rib 337, the angles A2 and A3 formed between the bottom surface 3221 of the second diagonal pressure bar and the bottom surface 3121 of the first diagonal pressure bar and the vertical bar 321 can be adjusted respectively. In the present utility model, the side edge of the floor 2 is a straight side edge, so angle A2 is equal to angle A3. Therefore, the angle degree of angle A2 can be correspondingly increased. For example, angle A4 is added to angle A2 to make the sixth rib 2251b fall below the ninth rib 337d (as shown in the appendix Figure 7-5 shown). When A2 becomes larger, the angle A1 (as shown in the appendix Figure 4 shown) also needs to be adjusted so that the angle degree of angle A1 also becomes larger appropriately. The purpose is to keep the upper surface 331 of the toggle lock bar still coincident with the upper vertical surface 212a of the floor 2a in the pre-hung state (as shown in the appendix Figure 6-4 shown); when A2 becomes larger, the upper inclined surface 213a of the floor 2a also needs to be tilted upward appropriately. Specifically, as shown in the appendix Figure 7-5 shown, the upper inclined surface 213ad (dotted line) is shown; as shown in the appendix Figure 7-5 shown is a partial enlarged cross-sectional schematic diagram of angle A4 and the second triangular block C13.

[0202] 1.2.2), as shown in the appendix Figure 7-6As shown, when pressing down the floor 2b, the upper surface 2233b of the lower groove of the floor 2b presses on the outer surface 3243 of the second locking strip, causing the first lock body 31 to rotate around the rotating rib 314 and abut against the support point S5 on the upper surface 221a of the lower tenon in the first groove 20a in the direction of arrow A13. It should be further noted that during the rotation of the first lock body 31, in addition to moving towards the side wall 201a of the bottom of the first groove during the pre-hanging process, the first lock body 31 also moves along the upper surface 221a of the lower tenon towards the notch side of the first groove 20a, causing the support point S5 where the first lock body 31 rotates to not be limited to the current horizontal position point. Therefore, the "support point S5" can also be extended to the "support area S5"; the inner rib 315 of the limit lock head presses upwards on the inner bottom surface 2113a of the upper tenon. Due to the wedge effect between the upper tenon 21a and the lower tenon 22a, when subjected to an external force, the upper tenon 21a and the lower tenon 22a can open a certain distance, forming the dotted line 2113ad at the upper end of the upper tenon 21a, causing the inner rib 3135 of the limit lock head to slide along the inner bottom surface 2113ad of the upper tenon 21a where the upper tenon 21a opens along the dotted line.

[0203] 1.2.3), as shown in the attached Figure 7-7 It can be seen that when the upper surface 3132 of the limit lock head abuts against the inner rib 2025a in the upper groove, and in the vertical direction, the sixth rib 2251b is below the tenth rib 338, continue to press the floor 2b. The inclined surface 2235b in the lower groove presses on the side edge of the upper surface 3242 of the second locking strip, causing the first lock body 31 to continue to rotate around the support point S5 in the direction of arrow A13, making the bottom surface 3121 of the first inclined pressure strip abut against the fourth rib 226a. Due to the abutment restriction between the bottom surface 3121 of the first inclined pressure strip and the fourth rib 226a and gradually sliding along the fourth rib 226a in the direction of arrow A14, the rotating rib 314 moves along the upper surface 221a of the lower tenon towards the outside of the notch of the first groove 20a. At the same time, on the other side, that is, on the side of the floor 2b, the sixth rib 2251b of the floor 2b enters the position below the bottom surface 3221 of the second inclined pressure strip through the ninth rib 337, the third guiding surface 336, and the tenth rib 338. When pressing down the floor 2b, that is, while the first lock body 31 rotates around the bottom support point S5 of the rotating rib 314, the second lock body 32 and the toggle lock strip 33 rotate in the lower groove 223b of the floor 2b around the second locking strip 324, causing the upper guiding surface 333 of the toggle lock strip to abut against the outer bottom surface 2112b of the upper tenon. Due to the wedge effect between the upper tenon 21b and the lower tenon 22b, when subjected to an external force, the upper tenon 21b and the lower tenon 22b can open a certain distance, causing the upper guiding surface 333 of the toggle lock strip to move towards the outer rib 2024b of the upper groove along the outer bottom surface 2112bd of the upper tenon at the dotted line part at the upper end of the upper tenon 21b.

[0204] Technical key points: as shown in the attached Figure 7-6 and the attachedFigure 7-7 As shown, when the limit lock head 313 jacks up the upper groove inner rib 2025a, the distance D4 (dotted line indicates) between the upper groove inner rib 2025a and the upper groove inner rib 2025ad in the dotted line part is set according to the material of the manufactured floor 2a, especially according to the elasticity of the materials of the upper convex body 21a and the lower tenon 22a: 0.10 mm ≤ D4 ≤ 0.65 mm; Based on the upper groove inner rib 2025a being close to the first groove bottom side wall 201a, as shown in the appendix Figure 7-7 As can be seen from the figure, the value of the distance L7 between the elastic force application point of the upper groove inner rib 2025a and the elastic fulcrum 201as of the first groove bottom side wall 201a is small. Therefore, if the opened distance D4 is too large, that is, the larger the distance that the upper convex body 21a and the lower tenon 22a open with the first groove bottom side wall 201a as the connection point, the greater the elastic force generated at the force application point of the upper groove inner rib 2025a, which will easily cause the lock fastener 3 to deform when rotating, and also easily cause cracking at the connection between the first groove bottom side wall 201a and the upper convex body bottom surface 211a and / or the lower tenon upper surface 221a, and it is difficult for the lower tenon 22a and the upper convex body 21a to close and return to the state before opening after opening. Therefore, generally, it is preferably 0.10 mm ≤ D4 ≤ 0.30 mm, as shown in the appendix Figure 7-8 Shown in the figure is a partial enlarged cross-sectional schematic diagram of parts of D4 and L7;

[0205] The magnitude of the value of D4 can be adjusted by adjusting the horizontal position of the upper groove inner rib 2025a; as shown in the appendix Figure 7-13 As shown, when the upper groove inner rib 2025a is moved towards the first groove bottom side wall 201a, the value of D4 becomes smaller, and vice versa. Moving the horizontal position of the upper groove inner rib 2025a can be adjusted by moving the distance between the fourth abutting surface 2022a and the third abutting surface 2021a in the horizontal direction. When the third abutting surface 2021a is set to be stationary and the angle of the fourth abutting surface 2022a remains unchanged, the fourth abutting surface 2022a moves horizontally towards the first groove bottom side wall 201a, such as the fourth abutting surface 2022as in the dotted line part, and its corresponding D4 value becomes smaller, and vice versa, the D4 value becomes larger; It can also be adjusted by adjusting the included angle A15 between the upper groove upper surface 2023a and the fourth abutting surface 2022a. When the angle degree of the angle A15 becomes larger, the value of D4 becomes smaller, and vice versa;

[0206] Secondly, as shown in the appendix Figure 7-9 As shown, according to the elastic force of different materials of the manufactured floor 2a, the length of L7 can be extended by changing the horizontal depth of the first groove bottom side wall 201a. Usually, an elastic adjustment groove 204a is horizontally opened towards the inner side of the first groove bottom side wall 201a to extend the length of L7, so as to obtain a suitable elastic force when opening the same D4 distance, as shown in the appendixFigure 7-9 As shown, ensure that the locking fastener 3 does not deform during rotation and / or movement, and the upper convex body 21a and the lower tenon 22a can open and close and return to the state before opening. At the same time, ensure that the inner side bottom of the bottom side wall 201a of the first groove or the elastic adjustment groove 204a does not crack;

[0207] 1.2.4), as shown in the appendix Figure 7-10 As shown, when the limit lock head 313 slides over the inner convex strip 2025a of the upper groove, since the external force between the upper convex body 21a and the lower tenon 22a is lost, due to the wedge effect between the upper convex body 21a and the lower tenon 22a, the upper convex body 21a and the lower tenon 22a close and return to the state before opening. The limit lock head 313 enters the upper groove 202a, and the second convex strip 315 abuts against the third abutting surface 2021a;

[0208] As shown in the appendix Figure 7-11 As shown, due to the wedge effect between the upper convex body 21a and the lower tenon 22a, when subjected to an external force, the upper convex body 21a and the lower tenon 22a can open a certain distance, so that the second convex strip 315 slides along the outer bottom surface 2112ad of the upper convex body of the dotted line. The opening distance D5 between the outer convex strip 2024a of the upper groove and the outer convex strip 2024ad of the dotted line part of the upper groove is usually set as: 0.15mm ≤ D5 ≤ 0.45mm, as shown in the appendix Figure 7-12 is an enlarged schematic diagram of the D5 part;

[0209] As shown in the appendix Figure 7-13 As shown, when the second convex strip 315 slides over the outer convex strip 2024a of the upper groove, since the upper convex body 21a and the lower tenon 22a gradually decrease and the external force is lost, the upper convex body 21a and the lower tenon 22a gradually close and return to the state before opening due to the wedge effect. 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 limit 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 convex body, 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.

[0210] Technical key points: as shown in the appendix Figure 7-13As can be seen, when the first lock body 31 of the lock fastener 3 is locked and fixed to the floor 2a, the greater the horizontal distance L1 between the contact surface of the upper surface 3111 of the first tenon and the outer bottom surface 2112a of the upper tenon, the more stable the locking and fixing of the first lock body 31 to the floor 2a. That is, when a pressure is applied to the front of the floor, the first lock body 31 is not easily rotated in the direction of arrow A16. Due to the abutment limiting measures between the first abutting surface 3131 and the third abutting surface 2021a, the abutment limiting measures of the bottom surface 3121 of the first inclined pressing strip against the lower inclined surface 225a, and the bottom surface 3112 of the first tenon against the upper surface 221a of the lower tenon, the first lock body 31 is not easily rotated in the direction of arrow A13. Therefore, when a pressure is applied to the front of the floor 2a, the first lock body 31 of the lock fastener 3 can be stably located in the first groove 20a. Secondly, the abutment limiting between the first abutting surface 3131 and the third abutting surface 2021a, and the abutment limiting between 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 easily move out of the notch of the first groove 20a;

[0211] As shown in the attachment Figure 7-14 by making the inner side surface 3113 of the first tenon inclined at a certain angle relative to the vertical plane, that is, adjusting the included angle A7 between the inner side surface 3113 of the first tenon and the upper surface of the first inclined pressing strip 312. When the degree of the angle A7 is smaller, the value of L1 is larger. The L1a value in the attachment Figure 7-14 is greater than the L1 value shown in the attachment Figure 7-13 As shown in the attachment Figure 7-14 when the abutting contact surface L1a between the upper surface 3111 of the first tenon and the outer bottom surface 2112a of the upper tenon is larger, the first lock body 31 is more stable in the first groove 20a and is less likely to rotate in the direction of A16. And when L1a becomes larger relative to L1, the D5 value shown in the attachment Figure 7-11 will also become larger;

[0212] As shown in the attachment Figure 7-15As shown, the numerical range of L1 is also restricted by the fact that the fastener 3 is pre-set into the first groove 20a of the floor 2a. The rotating ridge 314 has abutted against the upper edge of the lower inclined surface 225a, the abutting surface 334 of the toggle lock bar abuts against the upper edge of the upper vertical surface 212a, and the second ridge 315 has passed through the outer ridge 2024a of the upper groove. The second ridge 315 can lift the first lock body 31 upward along the third abutting surface 2021a. Rotate the fastener 3 step by step in the direction of arrow A13 and translate the first lock body 31 step by step toward the bottom side wall 201a of the first groove, so that the bottom of the rotating ridge 314 abuts against the upper surface 221a of the lower tenon. Referring to steps 1.1.1) to 1.1.4) of this first preferred embodiment, the fastener 3 can be pre-set into the first groove 20a of the floor 2a; when the value of L1a is too large, obviously, as the second ridge 315d in the dotted line part, the first lock body 31 cannot be pre-set in the first groove 20a of the floor 2a;

[0213] Of course, when the value of L1a is too large, the corresponding value of D5 will also increase. An overly large value of D5 may cause the fastener 3 to deform and rotate and / or may cause cracking at the connection between the bottom side wall 201a of the first groove and the inner edge of the upper convex body 21a and / or at the inner edge connection of the lower tenon 22a during use. For example, when manufacturing the floor with wood materials, the value of L1 is usually set as: 0.6mm ≤ L1 ≤ 1.75mm. Generally, the greater the air-dry density of the wood, the greater its strength and the corresponding greater elasticity. Preferably, 0.8mm ≤ L1 ≤ 1.65mm, which is basically applicable to wood products with an air-dry density of 0.5g / cm 3 to 1.0g / cm 3 for the above wood products;

[0214] As shown in the appendix Figure 7-13 The set range of the value of L1 is also related to the size of the distance L10 between the vertical extension line of the outer ridge 2024a of the upper groove and the vertical extension line of the side surface of the bottom side wall 201a of the first groove or the elastic adjustment groove 204a. When it is necessary to make the value of L1 larger, the value of L10 can be appropriately increased. That is, under other unchanged conditions, when horizontally opening the elastic adjustment groove 204a in the bottom side wall 201a of the first groove toward the center position of the floor 2, that is, horizontally moving the bottom side wall 201a of the first groove inward toward the center position of the floor 2 to make the value of L10 larger, the value of L1 can be increased correspondingly;

[0215] As shown in the appendix Figure 7-14 As shown; in addition, the value of L1 can be increased by appropriately reducing the vertical thickness value of the upper convex body 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 convex body and the horizontal extension line of the front surface of the floor 2a; preferably, the value of V0 is not less than 3mm;

[0216] Overall, the value of L1 cannot exceed the maximum limit beyond which the first lock body 31 cannot be pre-hung into the first groove 20. Its maximum limit is mainly related to the parameter data in five aspects:

[0217] As shown in the appendix Figure 7-14 The first parameter is related to the value of the width of the first groove 20a in the vertical direction, that is, related to the value of the vertical distance V1 between the horizontal extension line of the bottom surface 211a of the upper convex body 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.

[0218] The second parameter is related to the angle degree of the acute angle A8 of the third abutting surface 2021a relative to the horizontal plane. As shown in the appendix Figure 7-14 The larger the angle degree of angle A8 is, that is, the value of L1 becomes larger. Among them, the appendix Figure 7-18 is the partial enlarged schematic diagram of angle A7 and angle A8. Figure 7-14 There is a partial enlarged schematic diagram of angle A7 and angle A8.

[0219] The third parameter is related to the value of the horizontal distance L8 between the vertical extension line of the upper groove protruding strip 2024a and the vertical extension line of the upper vertical surface 212a. The larger the value of L8 is, the smaller the set range of the value of L1 can be. As shown in the appendix Figure 7-15 As shown, when the upper groove protruding strip 2024as is set to be on the outer side of the upper groove protruding strip 2024a close to the notch in the horizontal direction, the dotted part 315d can enter the upper groove 202a through the upper groove protruding strip 2024as. Assuming there is no upper groove protruding strip 2024as, the dotted part 315d cannot enter the upper groove 202a through the upper groove protruding strip 2024a;

[0220] The fourth parameter is related to the horizontal distance L11 between the vertical extension line of the fourth rib 226a and the vertical extension line of the upper vertical surface 212a (as shown in the appendix Figure 2 As shown), the larger the value of L11 is, the larger the set range of the value of L1 can be. As shown in the appendix Figure 7-15 As shown, when the angle of the lower inclined surface 225a is set to be unchanged and the lower inclined surface 225as (dotted part) is horizontally inwardly moved towards the center position of the floor 2 appropriately, the value of L11 can be increased, and the dotted part 315d can enter the upper groove 202a through the upper groove protruding strip 2024a;

[0221] The fifth parameter is related to the angle degree of the acute angle A9 of the lower inclined surface 225a relative to the horizontal plane. As shown in the appendix Figure 2 As shown, the larger the angle degree of angle A9 is, the larger the set range of the value of L1 can be;

[0222] It should be noted that through experiments and analyses, in order to firmly lock and fix the locking fastener 3 to the floor 2, the value of L8 should be greater than the value of L11; one set of experimental data disclosed in this first preferred embodiment is: when V0 is equal to 4.5 mm, V1 is equal to 3.5 mm, A8 is equal to 41°, L8 is equal to 3.31 mm, L11 is equal to 2.48 mm, and A9 is equal to 34.1°, L1 is the maximum value of 1.1 mm. When L1 is equal to 1.1 mm, the air-dry density is between 0.5 g / cm 3 to 1.0 g / cm 3 When the value of L10 of the floor 2 made of the above wood material is 3.5 mm - 10.2 mm, since the hardness of each type of wood is only one of the reasons affecting its elasticity and there are also differences in the application of vertical and horizontal grain intersections, some data may be on the small or large side. And for floors 2 such as those composed of thin laminated wood sheets, three-layer floors 2 with vertical and horizontal intersections, multi-layer wood floors 2, floors 2 made of MDF (medium-density fiberboard) and HDF (high-density fiberboard) wood materials, etc., will be further described later; for floors 2 made of other materials with different properties, those skilled in the art can optimize according to the described method and the published parameter data.

[0223] As shown in the Figure 7-1 accompanying Figure 7-11 figures, it can be seen that when the floor 2b is pressed downward, in the vertical direction and / or position, the sixth rib 2251b of the floor 2b always moves below the ninth rib 337, the third guiding surface 336, the tenth rib 338, and the bottom surface 3221 of the second diagonal pressing strip.

[0224] As shown in the Figure 7-1 accompanying Figure 7-11 figures, it can be seen that during the installation process, the upper vertical surfaces 212a of the floor 2a and the upper vertical surfaces 212b of the floor 2b always coincide with the vertical center plane VP.

[0225] 1.2.5), as shown in the Figure 7-16 figures, when the upper guiding surface 333 of the toggle lock bar abuts against the outer bottom surface 2112b of the upper convex body on the floor 2b, due to the wedge effect between the upper convex body 21b and the lower tenon 22b, the upper convex body 21b and the lower tenon 22b open. The connecting line distance D7 between the outer bottom surface 2112b of the upper convex body (the dotted line when the upper convex body 21b opens) and the outer rib 2024b of the upper groove is set to: 0.15 mm ≤ D7 ≤ 0.95 mm, preferably 0.30 mm ≤ D7 ≤ 0.65 mm. When the upper guiding surface 333 of the toggle lock bar slides over the highest point of the upper convex body 2112b, since the external force between the upper convex body 21b and the lower tenon 22b gradually disappears, due to the wedge effect, the upper convex body 21b and the lower tenon 22b gradually close and return to the state before opening, as shown in the Figure 7-13As shown, the abutting surface 334 of the paddle lock bar abuts against the third abutting surface 2021b, the bottom surface 3221 of the second inclined 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 bottom plate 323, and the inner vertical surface 3241 of the second locking bar abuts against the outer vertical surface 2232b of the lower groove of the floor 2b. The second lock body 32 and the paddle lock bar 33 are respectively locked and fixed with the lower tenon 22b and the first groove 20b of the floor 2b to complete the locking.

[0226] Technical key points: In the present utility model, the structures of all sides of the floor 2a and the floor 2b used in cooperation with the first lock body 31, the second lock body 32 and the paddle lock bar 33 of the lock fastener 3 are the same. Therefore, when designing the relevant structures and parameter ratios in the first groove 20a of the floor 2a, the locking and fixing with the first lock body 31 is considered first, and then the structure and parameter ratio of the paddle lock bar 33 of the floor 2b are considered to adapt to the locking and fixing with the floor 2b. Accordingly, by extending or shortening the length of the paddle lock bar 33, that is, changing the length D2 between the connection of the second inclined bar 322 and the paddle lock bar 33 and the guiding surface 333 on the paddle lock bar, the value of D7 can be changed. As shown in the appendix Figure 7-16 As shown, when the value of D2 increases, the value of D7 also increases, and vice versa, the value of D7 decreases. Figure 7-17 It is an enlarged schematic diagram of D7.

[0227] As shown in the appendix Figure 7-13 As shown, due to the abutting restriction measures between the abutting surface 334 of the paddle lock bar and the third abutting surface 2021b, the second lock body 32 and the paddle lock bar 33 are not easily rotated in the direction of arrow A16; due to the multiple abutting restriction measures that the bottom surface 3221 of the second inclined 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 bottom plate 323, and the inner vertical surface 3241 of the second locking bar abuts against the outer vertical surface 2232b of the lower groove, the paddle lock bar 33 and the second lock body 32 are not easily rotated 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 easily rotated.

[0228] As shown in the appendix Figure 7-13 As shown, the purpose of setting the inner inclined surface 2235b of the lower groove is that by arranging a slightly triangular third triangular block-shaped reinforcing rib (shown by a dotted line) S7 along the upper side edge of the outer vertical surface 2232b of the lower groove, when the lock fastener 3 rotates in the direction of arrow A13, the outer vertical surface 2232b of the lower groove will not be subjected to excessive external force in the outer side direction (arrow A18 direction) by the inner vertical surface 3241 of the second locking bar, causing the cross connection S6 (shown by a dotted line) between the outer vertical surface 2232b of the lower groove and the upper surface 2233b of the lower groove to crack. The inner inclined surface 2235b of the lower groove can be a flat surface or an inner concave arc surface, and in this first preferred embodiment, it is a flat surface.

[0229] The second preferred embodiment of the present utility model:

[0230] The second preferred embodiment of the present utility model is the best embodiment in the present utility model. As shown in the attached Figure 8 and the attached Figure 9 As shown, the attached Figure 8 is a schematic cross-sectional structure diagram of the floor 2 of the second preferred embodiment of the present utility model, and the attached Figure 9 is a schematic three-dimensional structure diagram of the floor 2. The floor 2 shown in the attached Figure 8 is provided with a third groove 205 on the bottom surface 211 of the upper convex body of the floor 2 shown in the attached Figure 2 shown in the first embodiment. The third groove 205 is a groove with an opening obliquely facing the notch direction of the first groove 20. Horizontally and / or in terms of position, the third groove 205 is arranged between the upper groove 202 and the bottom side wall 201 of the first groove. The upper groove 202 includes the third groove 205;

[0231] Among them, the third groove 205 includes a third groove abutting surface 2051, a third groove bottom surface 2052, and a third groove inclined surface 2053.

[0232] Among them, the third groove abutting surface 2051 forms an acute angle A5 with respect to the horizontal plane, and the angle A5 is set as: 0°≤A5≤11°, preferably 2.5°≤A5≤10.5°.

[0233] The upper groove 202 further includes an upper bottom cutting surface 207 and a first rib 206.

[0234] A plane is formed by connecting the lower side edge of the fourth abutting surface 2022 and the lower side edge of the third groove abutting surface 2051 as the upper bottom cutting surface 207. A rib is formed by connecting the lower side edge of the third groove abutting surface 2051 and one side edge of the upper bottom cutting surface 207 as the pre-hanging limit rib 2055. A rib is formed by connecting the other side edge of the upper bottom cutting surface 207 and the lower side edge of the fourth abutting surface 2022 as the first rib 206. A rib is formed by connecting the third groove inclined surface 2053 and the edge of the upper convex body bottom surface 211 as the third groove inner rib 2054. The fourth abutting surface 2022 is a clamping surface.

[0235] The upper bottom cutting surface 207 forms an acute angle A6 with respect to the horizontal plane, and the angle A6 is set as 0°≤A6≤7.2°, preferably the angle A6 is equal to 0°;

[0236] A rib is formed by connecting the upper vertical surface 212 and the upper inclined surface 213 of the floor 2 as the upper inclined surface upper rib 2131.

[0237] As shown in the attached Figure 12 is a partial enlarged schematic diagram with the angle A5 and the angle A6.

[0238] In the second preferred embodiment of the present utility model, as shown in the appended Figure 10 and the appended Figure 11 shown, the appended Figure 10 is a schematic cross-sectional structure diagram of the lock fastener 3 of the second preferred embodiment of the present utility model, and the appended Figure 11 is a schematic three-dimensional structure diagram of the lock fastener 3 of the appended Figure 10 . The lock fastener 3 shown in the appended Figure 10 sets the limit lock head 313 of the lock fastener 3 shown in the appended Figure 3 of the first embodiment 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, and the limit lock head protrudes on the upper surface 3111 of the first tenon;

[0239] The limit lock head 313 further includes a second abutting surface 3133, and the second abutting surface 3133 is a clamping surface. In the horizontal direction, the second abutting surface 3133 and the outer side surface 3114 of the first tenon face the same direction.

[0240] Wherein the upper side edge of the second abutting surface 3133 is connected to one side edge of the upper surface 3132 of the limit lock head, and the lower side edge of the second abutting surface 3133 is concave into the limit lock head 313 and connected to the upper side edge of the outer side surface 3114 of the first tenon to form an arc-shaped groove as the limit lock head groove 3134. The second abutting surface 3133 extends upward and intersects with the upward extension surface of the first abutting surface 3131, and the intersection connection is a straight line;

[0241] The first lock body 31 further includes a third rib 3115. The lower side edge of the first abutting surface 3131 and the upper side edge of the inner side surface 3113 of the first tenon are connected to form a rib as the third rib 3115;

[0242] The opposite side surfaces of the vertical strip 321 are provided with a first vertical side surface 3227 and a second vertical side surface 3228 of the vertical strip. Among them, the first vertical side surface 3227 of the vertical strip faces the second strip 324, and the upper side surface of the first vertical side surface 3227 of the vertical strip is provided with a seventh convex body 3211, and the second vertical side surface 3228 of the vertical strip is provided with an eighth convex body 3212.

[0243] Among them, the seventh convex body 3211 is at least provided with a seventh convex body outer side surface 3213, a seventh convex body lower rib 3215 and a seventh convex body lower surface 3217 in sequence from top to bottom in the vertical direction, and the eighth convex body 3212 is at least provided with an eighth convex body upper rib 3214 and an eighth convex body outer side surface 3216 in sequence from top to bottom in the vertical direction;

[0244] In the present utility model, as shown in the appended Figure 13-1 to the appended Figure 13-6 shown is the lock fastener 3 of the present utility model shown in the appended Figure 10 set to enter the appended Figure 8Schematic diagram of typical pre - hanging installation steps in the first groove 20 of the floor 2 shown:

[0245] 2.1.1), As shown in the appendix Figure 13-1 As shown, tilt the locking part 3 at a certain angle so that the third rib 3115 of the first lock body 31 abuts against the outer bottom surface 2112 of the upper convex body of the floor 2, and the first lock body 31 moves along the outer bottom surface 2112 of the upper convex body in the direction of arrow A11 towards the bottom side wall 201 of the first groove;

[0246] Or as shown in the appendix Figure 13-2 As shown, tilt the locking part 3 at a certain angle so that the rotating rib 314 abuts against the lower inclined surface 225, and move the rotating rib 314 upward along the lower inclined surface 225 into the upper groove 202;

[0247] 2.1.2), As shown in the appendix Figure 13-3 As shown, the third rib 3115 of the locking part 3 moves horizontally and / or in position and passes through the boundary of the outer rib 2024 of the upper groove, and then lift the locking part 3 upward along the third abutting surface 2021 so that the bottom end face of the rotating rib 314 is higher than the upper surface 221 of the lower tenon in the vertical direction. Further move the locking part 3 in the direction of arrow A11 so that the bottom end face of the rotating rib 314 abuts against the upper surface 221 of the lower tenon;

[0248] 2.1.3), As shown in the appendix Figure 13-4 As shown, the first lock body 31 of the locking part 3 rotates around the support point S5 where the rotating rib 314 abuts against the upper surface 221 of the lower tenon in the first groove 20 in the direction of arrow A12. It should be further noted that during the rotation of the first lock body 31, the first lock body 31 will move along the upper surface 221 of the lower tenon towards the inner side of the bottom side wall 201 of the first groove or towards the outer side of the notch of the first groove 20, so that the support point S5 where the first lock body 31 rotates is not limited to the current horizontal position point. Therefore, "support point S5" can also be extended to "support area S5"; Rotate several times in the direction of arrow A12 and gradually move the locking part 3 in the direction of arrow A11 during the rotation. The purpose of rotation is to make the highest point of the limit lock head 313 below the upper bottom cutting plane 207, so that the first lock body 31 can translate towards one side of the bottom side wall 201 of the first groove, so that the limit lock head 313 passes through the upper bottom cutting plane 207 and the limit lock head 313 enters the third groove 205;

[0249] Technical key point: As shown in the appendix Figure 13-4 As shown, although the upper surface 331 of the toggle lock bar does not completely overlap with the upper vertical surface 212, actually the locking part 3 and the floor 2 are in accordance with the appendix Figure 13-4The existing combined state shown does not affect the locking and fixing of the adjacent floorboards 2, which is conducive to the pre-hanging and setting of the lock fastener 3 at least on one long side of the floorboard 2 in the factory. Since the third groove abutting surface 2051 is an inclined surface, the lock fastener 3 can be moved to the outside of the notch of the first groove 20 by rotating in the opposite direction of the arrow A12. This is conducive to the factory pre-hanging and setting the first lock body 31 of the lock fastener 3 into the first groove 20 of the floorboard 2. During packaging, transportation and final on-site installation, it is not necessary to adjust the lock fastener 3 one by one to make the upper surface 331 of the paddle lock strip completely overlap with the upper facade 212, thereby improving production efficiency and installation efficiency.

[0250] 2.1.4) As attached Figure 13-5 As shown, the lock member 3 is further moved in the direction of arrow A11 so that the lock member 3 moves along the upper surface 3221 of the lower tenon, the upper surface 331 of the paddle lock bar abuts against the upper vertical surface 212 of the floor 2, the first abutting surface 3131 abuts against the abutting surface 2051 of the third groove, and the rotating protrusion 314 abuts against the upper surface 221 of the lower tenon, and the lock member 3 and the floor 2 are in the best pre-hanging state;

[0251] As attached Figure 8 The floor 2 shown also includes an attached Figure 10 Locking piece 3;

[0252] As attached Figure 10 The lock member 3 is shown to be inclined so that the first lock body 31 is arranged near Figure 8 In the first groove 20 of at least one side of the floor 2 shown, there is no locking component 3 on the other side opposite to the side of the floor 2 on which the locking component 3 has been pre-hung. The second preferred embodiment of the utility model does not require the use of forced squeezing or force plate to dynamically position the locking component 3 in the first groove 20 of the floor 2.

[0253] Technical points: as attached Figure 13-5 As shown, the third groove abutting surface 2051 is preferably an inclined surface, which can limit the lock member 3 from moving toward the notch direction of the first groove 20 without external force or without rotating the lock member 3 in the opposite direction of the arrow A12 after the lock member 3 is pre-hung with the floor 2. When the lock member 3 and the floor 2 are in the best pre-hung state, the first abutting surface 3131 abuts against the third groove abutting surface 2051, so as shown in the attached Figure 8 The value of the acute angle A5 of the third groove abutting surface 2051 relative to the horizontal plane is preferably 2.5°≤A5≤10.5°, for example, in the second preferred embodiment, A5 is equal to 6.9°;

[0254] As attached Figure 12As shown, the acute angle A6 between the upper bottom cutting plane 207 and the horizontal plane is preferably equal to 0°. Since there are still some enterprises using non-CNC grooving equipment, when debugging the grooving tool of the equipment, that is, when actually debugging the tool shaft of the grooving tool for the upper groove 202, to determine whether the depth of the upper groove 202 relative to the bottom surface 211 of the upper convex body meets the requirements of the drawing design, it is usually possible to analyze and judge by projection, but the actual efficiency is low, affecting the debugging efficiency. Therefore, the upper bottom cutting plane 207 can be parallel to the front surface of the floor 2, that is, the acute angle A6 between the upper bottom cutting plane 207 and the horizontal plane is equal to 0°. Usually, the horizontal length of the upper bottom cutting plane 207 can reach about 1 mm. Therefore, by using the outer measuring jaws of a vernier caliper to measure, the value of the depth of the upper groove 202 relative to the bottom surface 211 of the upper convex body can be judged, making the measured data accurate and the measuring process simple and fast. As shown in the appendix Figure 13-6 As shown, the two jaw heads C22 and C23 of the outer measuring jaws of the vernier caliper are respectively abutted against the front surface of the floor 2 and the upper bottom cutting plane 207.

[0255] In the present utility model, as shown in the appendix Figure 14-1 to the appendix Figure 14-18 As shown, this is a schematic diagram of the typical installation steps for the locking fastener 3 shown in the appendix Figure 10 and the locking and fixing of the floor 2a and the floor 2b shown in the appendix Figure 8 As shown. The second preferred embodiment of the present utility model sets the VP vertical center plane as the relative displacement plane along the VP vertical center plane where the upper vertical surfaces of adjacent floors abut and coincide with each other. The specific typical installation steps are as follows:

[0256] 2.2.1), as shown in the appendix Figure 14-1 As shown, the first lock body 31 of the locking fastener 3 is pre-hung into the first groove 20a of the floor 2a according to the steps 2.1.1) to 2.1.4) in the second preferred embodiment. At this time, the second bottom plate 323 and the second card strip 324 of the locking fastener 3 protrude outside the upper vertical surface 212a of the floor 2a. The lower groove 223b of the floor 2b is hung on the second card strip 324 of the locking fastener 3, and the upper surface 2233b of the lower groove of the floor 2b abuts against the outer surface 3243 of the second card strip.

[0257] Technical point one: A second groove inner cavity 3251 is reserved below the lower surface 3217 of the seventh convex body, that is, the second groove inner cavity 3251 is arranged in the space of the projection area of the downward projection of the lower surface 3217 of the seventh convex body on the upper surface of the second bottom plate 323, and the projection direction is perpendicular to the upper surface of the second bottom plate 323. The purpose of setting the second groove inner cavity 3251 is: as shown in the appendix Figure 14-1In the state of the locking member 3 shown, the lower tenon 22b vertically enters the second groove 325 of the locking member 3, and the lower vertical surface 222b does not abut against the outer vertical surface 3213 of the seventh protrusion, so that the lower groove 223b of the floor 2b can be hooked on the second strip 324, wherein the second groove 325 includes a second groove inner cavity 3251.

[0258] Technical point two: As shown in the appendix Figure 14-1 As shown, the horizontal width L3 at the notch of the lower groove 223a can be set as follows: In this second embodiment, L3≥1.2mm is set, preferably 2.5mm≤L3≤5.5mm. The purpose is that when adjacent floors 2b are to be locked and fixed, as shown in the appendix Figure 13-5 As shown, the best state of pre-hanging the locking member 3 and the floor 2 is that the locking and fixing of adjacent floors 2b can be implemented, and the situation of pre-hanging the locking member 3 and the floor 2 as shown in the appendix Figure 13-4 As shown is also allowed to lock and fix the installation of adjacent floors 2b. This will cause each second strip 324 in different pre-hanging states of the locking member 3 on the same side of the floor 2 where the locking member 3 is pre-hung not to maintain the same distance from the upper vertical surface 212 of the floor 2, that is, the multiple second strips 324 on the same side of the same floor 2 are not necessarily in a straight line. Therefore, widening the horizontal notch width L3 of the lower groove 223 is beneficial for the lower groove 223b to be able to be hooked onto the second strips 324 of all the locking members 3 pre-hung on the side of the adjacent floor 2 during the vertical displacement of the floor 2b, which is beneficial for improving the installation efficiency. Secondly, for ultra-long strip-shaped floors 2, such as floors with a length exceeding 1800mm, the lower groove 223 of the floor 2 can be quickly and accurately hooked onto the second strips 324 of the locking members 3 pre-hung on the adjacent floor 2.

[0259] Technical point three: As shown in the appendix Figure 14-1 As shown, preferably, the vertical distance V3 between the upper surface 331 and the bottom surface 332 of the toggle lock bar is ≤ the horizontal distance L4 between the vertical extension line of the upper vertical surface 212a and the vertical extension line of the lower vertical surface 222a of the floor 2a. The purpose is as shown in the appendix Figure 14-11 As shown, the locking member 3a is pre-hung on the floor 2a, and the locking member 3c is pre-hung on the floor 2c. When installing the floor 2b between the floors 2a and 2c, when V3≤L4, the lower vertical surfaces 222b on both sides of the floor 2b can pass through the toggle lock bars 33a of the locking member 3a pre-hung on the floor 2a and the toggle lock bars 33c of the locking member 3c pre-hung on the floor 2c, and the lower groove 223b of the floor 2b is hooked onto the second strip 324a and the second strip 324c.

[0260] Technical point 4: Since the value of the thickness V3 of the toggle lock bar 33 of the lock fastener 3 will affect whether it will deform during the rotation process in the first groove 20. Generally, it should be noted that in view of the fact that the edge thickness of the actual floor 2 to which the lock fastener 3 and subsequent other supporting lock fasteners must be combined (i.e., the vertical distance from the front of the floor to the bottom of the floor) is usually less than 20 mm (and even less than 8 mm in many cases), the cross-section of the lock fastener 3 can only be of a relatively small size. Therefore, as shown in the appendix Figure 14-13 As shown, the available space for some devices of the lock fastener 3, such as the vertical bar 321, the second bottom plate 323, the first inclined pressure bar 312, and the second inclined pressure bar 322, is usually only on the order of about 0.8 mm or less. When the requirement of maintaining the rigidity of the lock fastener 3 must be met under such a small size, especially because the total length of the toggle lock bar 33 and the connected second inclined pressure bar 322 is relatively long, the toggle lock bar with a small size is prone to deformation when the toggle lock bar abutment surface 334 or the guiding surface 333 on the toggle lock bar is stressed. When anyone expects to implement it in the traditional way by dealing with different thicknesses, the feasibility is also limited. In order to prevent the toggle lock bar 33 and the second inclined pressure bar 322 of the lock fastener 3 from being easily deformed, therefore, an attempt is made to maintain, for example, when the lock fastener 3 is made of aluminum alloy material, the thickness V3 of its toggle lock bar 33 and the minimum part thickness V4 of the second inclined pressure bar 322 are usually not less than 0.8 mm. As shown in the appendix Figure 14-13 As shown, that is, the vertical distance V3 between the upper surface 331 of the toggle lock bar and the bottom surface 332 of the toggle lock bar is preferably not less than 0.8 mm, and the minimum vertical distance V4 between the bottom surface 3221 of the second inclined pressure bar and the upper surface of the second inclined pressure bar 322 is usually not less than 0.8 mm. Preferably, the values of V3 and V4 are 0.85 mm - 2.5 mm. In this second preferred embodiment, the lock fastener 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.

[0261] Therefore, when the vertical thickness of the edge of the floor 2 is small and V3 may be greater than L4, in order to prevent the situation as shown in the appendix Figure 14-12 As shown, before the floor 2b vertically enters the second groove 325 of the lock fastener 3, the bottom surface 224b of the lower tenon abuts against the guiding surface 333 on the toggle lock bar. Therefore, as shown in the appendix Figure 14-14 As shown, on the outer side edge of the bottom surface 224b of the lower tenon, a slope is formed by connecting with the lower side edge of the lower vertical surface 222b, which is the bottom slope 2249b of the lower tenon. Further, on the upper side edge of the bottom surface 332 of the toggle lock bar, a slope is formed by connecting with the lower side edge of the guiding surface 333 on the toggle lock bar, which is the lower guiding surface 335 of the toggle lock bar. As shown in the appendix Figure 14-14As shown, the lower tenon bottom inclined surface 2249b of the floor 2b slides over the guiding surface 333 on the toggle lock bar, and the lower side of the lower vertical surface 222b of the lower tenon 22b abuts against and presses the lower guiding surface 335 of the toggle lock bar. Since the floor 2 is floatingly installed, when the floor 2b vertically drops, two adjacent floors 2a will slightly move in the direction of arrow A20, enabling the lower vertical surface 222b of the floor 2b to press and slide over the bottom surface 332 of the toggle lock bar and enter the second groove 325.

[0262] 2.2.2), as shown in the appendix Figure 14-2 As shown, when pressing down the floor 2b, the upper surface 2233b of the lower groove of the floor 2b abuts against the outer surface 3243 of the second 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 rib 314 and the upper surface 221a of the lower tenon. It should be further noted that during the rotation of the first lock body 31, the first lock body 31 will move along the upper surface 221a of the lower tenon towards the notch side of the first groove 20a, making the support point S5 where the first lock body 31 rotates not limited to the current horizontal position point. Therefore, the "support point S5" can also be extended to the "support area S5"; at the same time, the toggle lock bar 33 and the second lock body 32 rotate in the lower groove 223b around the second strip 324 in the direction of arrow A13. The inner rib 3135 of the limit lock head presses upwards against the abutting surface 2051a of the third groove. Due to the wedge effect between the upper convex body 21a and the lower tenon 22a, when an external force acts between the upper convex body 21a and the lower tenon 22a, they can open a certain distance, enabling the limit lock head 313 to slide along the dotted line where the upper convex body 21a opens and abut against the upper bottom cutting surface 207ad, as shown in the appendix Figure 14-3 As shown, continue to press down the floor 2b, causing the limit lock head 313 to continue to move along the upper bottom cutting surface 207ad of the upper end dotted line of the upper convex body 21a towards the first rib 206ad.

[0263] Technical key point: As shown in the appendix Figure 14-3 As shown, due to the wedge effect between the upper convex body 21a and the lower tenon 22a of the floor 2a, when an external force acts, when the first lock body 31 rotates in the first groove 20a, the bottom of the rotating rib 314 of the first lock body 31 supports on the upper surface 221a of the lower tenon. When rotating the first lock body 31, the limit lock head 313 presses upwards against the abutting surface 2051ad of the third groove. Therefore, whether it can be achieved that during the rotation of the first lock body 31 of the lock fastener 3 in the first groove 20a, the limit lock head 313 accurately engages in the upper groove 202a, and ensuring that the first rib 206ad will not be damaged and the bottom side wall 201a of the first groove will not crack. At the same time, it is also necessary to ensure that due to the wedge effect between the upper convex body 21a and the lower tenon 22a, when the external force is removed, whether the upper convex body 21a and the lower tenon 22a can close and return to the state before opening is one of the key technical solutions of the present utility model, as shown in the appendixFigure 14-3 As shown, under normal circumstances, one of the important factors for the first lock body 31 to rotate within the first groove 20a and for the limit lock head 313 to be inserted into the upper groove 202a is whether the elastic force between the upper convex body 21a and the lower tenon 22a is appropriate. There are mainly three aspects affecting the elastic force between the upper convex body 21a and the lower tenon 22a, which are specifically as follows:

[0264] The first aspect is as shown in the appendix Figure 14-3 As shown, during the rotation of the first lock body 31, the inner convex strip 3135 of the limit lock head abuts against the upper bottom cutting surface 207a. At this time, the abutting point of the inner convex strip 3135 of the limit lock head and the upper bottom cutting surface 207ad of 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 cutting surface 207a. The larger the value of D1, the larger the opening distance between the upper convex body 21a and the lower tenon 22a, and the greater the elastic force between the upper convex body 21a and the lower tenon 22a. Therefore, as shown in the appendix Figure 14-13 As shown, the vertical distance V5 between the horizontal extension line of the upper bottom cutting surface 207 and the horizontal extension line of the upper surface 2023 of the upper groove can be adjusted to adjust the opening distance between the upper convex body 21a and the lower tenon 22a of the floor 2a. In essence, by adjusting the value of V5 to adjust the value of D1 to obtain an appropriate elastic force between the upper convex body 21a and the lower tenon 22a.

[0265] The second aspect is due to the different materials of the floor 2, especially the different air-dry densities of wood materials. Under normal circumstances, the greater the air-dry density of wood, the greater its hardness. Generally, the greater the hardness of wood, the greater its elasticity and the more difficult it is to deform. Therefore, the hardness of wood materials is one of the important factors affecting the elasticity of wood, that is, it affects the elastic force between the upper convex body 21a and the lower tenon 22a of the floor 2a. Secondly, as shown in the appendix Figure 7-14 As shown, the elastic force between the upper convex body 21a and the lower tenon 22a is related to the value of the thickness V0 of the upper convex body 21. Analyzing the overall structure of the side of the floor 2, it is preferred that the vertical thickness V2 of the lower tenon 22, that is, 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 greater than the value of V0. Such a structure is more stable and firm in actual installation and floor use. When the value of V2 remains unchanged, when the value of V0 is larger, the elastic force between the upper convex body 21a and the lower tenon 22a is also greater. Therefore, by adjusting the value of V0, an appropriate elastic force can be obtained between the upper convex body 21a and the lower tenon 22a when the same D1 value is opened. It is preferred that when the value of V0 is not less than 3mm, the thickness V7 of the lower bottom cutting part 230 can be adjusted to adapt to the vertical distance from the front of the floor to the bottom of the floor.

[0266] As shown in the appendix Figure 14-13As shown, the third aspect is to appropriately extend the horizontal distance L12 between the first convex strip 206 and the bottom side wall 201 of the first groove, that is, by horizontally opening an elastic adjustment groove 204 (as shown in the attachment) on one side of the bottom side wall 201 of the first groove in the direction of the center of the floor 2. Figure 7-9 As shown), so for floors 2 made of materials with different air-dry densities (usually), by adjusting the value of L12, an appropriate elastic force can be obtained between the upper convex body 21a and the lower tenon 22a when the same D1 value is opened.

[0267] Combining the main factors of the first aspect to the third aspect, as can be seen from the attachment Figure 14-13 described, the larger the value of V5, the more stable the first lock body 31 in the first groove 20. Therefore, in actual operation, it is very important to give priority to considering the value of V5. Usually, the value of V5 is preferably satisfied first, followed by the value of V0, and then the size of the L12 value is considered. The result of this design sequence not only satisfies the locking and fixing firmness of the lock fastener 3 and the floor 2, but also has feasibility in production. Because the value of V5 is related to the tool for processing the upper groove 202, different V5 values result in different tools for processing the upper groove 202. On the one hand, it will increase the tool cost and the time for replacing the tool shaft of the tool for processing the upper groove 202. And L12 is different. Because usually, if there is at least one tool shaft on one side for processing the first groove 20 in the horizontal direction, even if it is the so-called four-tool-shaft four-sided planer in the art, only saw blades with different diameters need to be clamped between the tools to adjust the value of L12, and its cost is extremely low and will not increase other production costs. If there are two tool shafts on one side that can process the first groove 20 in the horizontal direction, as long as one tool shaft is used to install a tool or saw blade for opening the elastic adjustment groove 204, different depths of the elastic adjustment groove 204 can be obtained only by adjusting the tool shaft process, without increasing production costs, and the debugging is simple and fast; adjusting the value of V0 is very simple, without replacing the tool, and the adjustment is simple and fast.

[0268] This second preferred embodiment discloses a set of experimental data: the edge thickness of the floor is 15 mm, the value of V0 is equal to 4.5 mm, the value of V1 is equal to 3.5 mm, the value of V2 is equal to 5.7 mm, the vertical distance V7 of the lower bottom cut part 230 is equal to 1.3 mm. As shown in the attachment Figure 7-14 shown, the angle A8 in the first preferred embodiment can be equal to 41°, while the angle degree of the angle A8 in this second embodiment is equal to 35°, L8 is equal to 2.91 mm, L11 is equal to 2.48 mm, where L8 is greater than L11, the angle degree of A9 is equal to 34.1°. In this second preferred embodiment, the value of V5 is set to 0.45 mm; through experiments, the set range of the value of V5 is: 0.25 mm ≤ V5 ≤ 1.25 mm. Usually, it is applicable to air-dry density at 0.5 g / cm 3-1.0 g / cm 3 Wood, preferably 0.35 mm ≤ V5 ≤ 0.75 mm. Since the hardness of each type of wood is only one of the reasons affecting its elasticity and there are also differences in the application of horizontal and vertical wood grains, some data may be on the small or large side. For floors 2 made of laminated thin wood sheets, three-layer cross-laminated floors 2, multi-layer wooden floors 2, floors 2 made of MDF (medium density fiberboard) and HDF (high density fiberboard) wood materials, etc., further explanations will be given later. For floors 2 made of other materials with different properties, those skilled in the art can optimize them according to the described methods and published parameter data.

[0269] 2.2.3), as shown in the appendix Figure 14-3 As shown, during the rotation and / or movement of the first lock body 31, the eighth convex body 3212 successively abuts against the third inclined surface upper convex strip 228a, the third inclined surface 227a, the third inclined surface lower convex strip 229a, and the lower vertical surface 222a, and the eighth convex body 3212 slides downward along the third inclined surface upper convex strip 228a, the third inclined surface 227a, the third inclined surface lower convex strip 229a, and the lower vertical surface 222a respectively, causing the first lock body 31 to move along the upper surface of the lower tenon 21a towards the notch of the first groove 20a during rotation, so that the limit lock head 313 is embedded in the upper groove 202a, as shown in the appendix Figure 14-4 as shown.

[0270] Technical key point: Since the locking fastener 3 is provided with the eighth convex body 3212, when the eighth convex body 3212 directly abuts against the lower side edge of the lower inclined surface 225a and / or the sixth convex strip 2251a during the rotation of the locking fastener 3, it causes the locking fastener 3 to move too much towards the floor 2b side, causing the floor 2b to deviate from the VP vertical center plane; as shown in the appendix Figure 14-2 It can be seen that there is a common intersection part, the fourth triangular block S8 (with a dotted line slightly in the shape of a triangle), between the connection of the lower vertical surface 222a and the upper inclined surface 225a and the upper side edge of the eighth convex body 3212 and / or the eighth convex body upper convex strip 3214, as shown in the appendix Figure 14-5 is a partial enlarged schematic diagram of the fourth triangular block S8. By setting the third inclined surface 227a, the fourth triangular block S8 is removed, enabling the upper vertical surface 212a of the floor 2a to be on the same plane as the VP vertical center plane. At the same time, it is also to ensure that the floor 2b remains on the same plane as the VP vertical center line plane during downward displacement; as shown in the appendix Figure 14-2 to the appendix Figure 14-4 As shown, it is because a third inclined surface 227a is provided at the connection of the lower vertical surface 222a and the lower inclined surface 225a, and the third inclined surface 227b of the floor 2b successively falls below the ninth convex strip 337, the third guiding surface 336, the tenth convex strip 338, and the second inclined pressing strip 322.

[0271] 2.2.4), as shown in the appendix Figure 14-4As shown, when the external force between the upper convex body 21a and the lower tenon 22a is removed, it closes and returns to the state before opening. The bottom surface 3112 of the first tenon abuts against the upper surface 221a of the lower tenon, 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 limit lock head is on the upper surface 2023a of the upper groove, and the bottom surface 3121 of the first inclined pressure strip abuts against the lower inclined surface 225a. The first lock body 31 is locked with the floor 2a to complete the locking;

[0272] Technical key points: As shown in the appendix Figure 14-4 As shown, due to the restriction measure that the second abutting surface 3133 on the outside of the limit lock head 313 abuts against the fourth abutting surface 2022a of the floor 2a, the rotation of the first lock body 31 in the first groove 20 in the direction of arrow A16 is restricted. Secondly, the limit lock head 313 is arranged 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. As shown by the dotted line connection in the appendix Figure 14-4 As can be seen from the dotted line connection shown in the appendix, at the abutting joint C1 between the second abutting surface 3133 and the fourth abutting surface 2022a, the abutting joint between the upper surface 3132 of the limit lock head and the upper surface 2023a of the upper groove is C2, the abutting joint between the first abutting surface 3131 and the third abutting surface 2021a is C3, the abutting joint C4 between the bottom surface 3121 of the first inclined pressure strip and the lower inclined surface 225a, and the two ends of the bottom surface 3112 of the first tenon respectively abut against the two ends C5 and C6 on the upper surface 221a of the lower tenon. From the appendix Figure 14-4 It is not difficult to see that the projection of the connection line between C1, C2 and C3 downward falls within the connection line between C5 and C6, and also falls within the connection line between C4 and C6. Obviously, when pressure is applied only to the upper end of the connection line of C1, C2 and C3, the first lock body 31 will not turn over. Therefore, the rotation of the first lock body 31 in the first groove 20a is further restricted. The appendix Figure 14-6 The figure shown is a partial enlarged schematic diagram of the joints from C1 to C6.

[0273] 2.2.5), As shown in the appendix Figure 14-2As shown, on one side of the floor 2b, while pressing down the floor 2b, the guiding surface 333 on the toggle lock bar abuts against the outer bottom surface 2112b of the upper convex body of the floor 2b. The third inclined upper convex strip 228b is below the ninth convex strip 337. Continuing to press down the floor 2b, the third inclined upper convex strip 228b is always below the ninth convex strip 337, the tenth convex strip 338, and the second inclined pressing 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 an external force, causing the guiding surface 333 on the toggle lock bar to move along the virtual upper convex outer bottom surface 2112bd of the opened upper convex body 21b towards the bottom side wall 201b of the first groove, enabling the guiding surface 333 on the toggle lock bar to slide past the boundary of the upper groove outer convex strip 2024b, and causing the abutting surface 334 of the toggle lock bar to enter the upper groove 202b, as shown in the appendix Figure 14-4 As shown, when the external force is removed, the upper convex body 21b and the lower tenon 22b close and return to the state before opening, causing the abutting surface 334 of the toggle lock bar to abut against the third abutting surface 2021b, the inner vertical surface 3241 of the second latch to abut against the outer vertical surface 2232b of the lower groove, the bottom surface 3221 of the second inclined pressing strip to abut against the lower inclined surface 225b, and the bottom surface 224b of the lower tenon to abut against the upper surface of the second floor board 323, completing the locking and fixing of the second lock body 32 and the toggle lock bar 33 with the floor 2b.

[0274] Technical key points; further illustrate the toggle lock bar 33 of the present utility model with reference to the D7 value described in 1.2.6) of the first preferred embodiment, 0.15mm ≤ D7 ≤ 0.95mm, preferably 0.30mm ≤ D7 ≤ 0.65mm; as shown in the appendix Figure 7-16 As shown, while giving priority to ensuring the locking and fixing strength between the lock fastener 3 and the floor 2 and taking into account the cost of the lock fastener 3, the horizontal distance L5 between the vertical extension line of the outer vertical surface 2232a of the lower groove and the vertical extension line of the lower vertical surface 222a, where L5 is equal to the horizontal distance L6 between the vertical extension line of the inner vertical surface 3241 of the second latch and the vertical extension line of the outer vertical surface 3213 of the seventh convex block; further analyzing the relationship between the D7 value and the L5 value is very important, as shown in the appendix Figure 14-4 As shown, under other unchanged conditions, in the horizontal direction, three groups of outer vertical surfaces 2232L51, 2232L52, and 2232L53 of the lower groove with different L5 sizes are set, corresponding to three coordinate points of the D7 value formed by three parabolic dotted lines of the simulated running trajectories of the guiding surface 333 on the toggle lock bar and the outer bottom surface 2112b of the upper convex body, which are L51, L52, and L53 respectively. From the appendix Figure 14-4 As shown, Figure 14-4As can be seen, the three dashed lines intersect with the guiding surface 333 on the paddle lock bar. Set the vertical distance V6 between the horizontal extension line of the uppermost surface of the guiding surface 333 on the paddle lock bar and the horizontal extension line of the bottom surface 211b of the upper convex body. When the value of V6 remains unchanged, the larger the value of L5 is set, the smaller the value of D7 will be. In other words, to maintain the same value of D7, when it is necessary to increase the value of L5 to improve the locking strength between the floor 2 and the locking fastener 3, the value of V6 should be increased accordingly, that is, extend the length D2 value between the guiding surface 333 on the paddle lock bar to the connection between the paddle lock bar 333 and the second diagonal pressing bar 322 (attached Figure 14-16 shown); in order to enable those of ordinary skill in the art to implement the technical solution of the present invention without further experiments, the value of L5 in the preferred embodiment of the present invention is set as: 2.2 mm ≤ L5 ≤ 6.5 mm, preferably 3.0 mm ≤ L5 ≤ 4.5 mm; attached Figure 14-7 is a partial enlarged schematic diagram of L51, L52, L53 and D7.

[0275] The value of D7 is usually an important basis for actual calculation and analysis. The method of showing the value of D7 in the present invention enables those of ordinary skill in the art to master the analysis method, and can adjust the values of L5 and D2 according to actual needs to meet the actual use requirements. In order to enable those of ordinary skill in the art to implement the technical solution of the present invention without further experiments, the present invention discloses through experiments that when L5 is equal to 3.1 mm or 4.0 mm, the vertical direction V6 between the highest point of the paddle lock bar 33 of the locking fastener 3 and the outer bottom surface 2112 of the upper convex bar is correspondingly set as 0.45 mm ≤ V6 ≤ 0.76 mm or 0.60 mm ≤ V6 ≤ 1.05 mm, as attached Figure 14-4 shown. Since the value of V6 directly determines the value of D7, the value of V6 can be adjusted by adjusting the combined tool for machining the first groove 20. Adjusting the combined tool for machining the first groove 20 is a basic skill of those skilled in the art, and the embodiment of the present invention will not be described here. In addition, the size of the D7 value is also related to the V0 value, L12 value in the structure of the floor 2 and the hardness factors of each kind of wood used to manufacture the floor 2, and there are also differences in the application of horizontal and vertical interlaced wood grains. Therefore, the value of V6 may be too small or too large.

[0276] It should be noted that since the locking fastener 3 in the present invention does not have elasticity, during the process of locking and fixing the adjacent floor 2 and the locking fastener 3, relying on the elastic and ductile characteristics between the upper convex body 21 and the lower tenon 22 of the floor 2, the wedge effect between the upper convex body 21 and the lower tenon 22 is applied. Therefore, not only for the floor 2 composed of a single piece of wood, such as attached Figure 29-1The floor 2 shown has a paint or wood wax oil layer as the surface layer 411 of the single-layer wooden floor; the elasticity and toughness of this single-layer wooden floor are mainly related to the hardness of the wood material, i.e., the air-dried density.

[0277] On the upper surface of the substrate 420 composed of multiple layers of thin wood sheets bonded and laminated with glue, a wooden top layer 421 is bonded with glue to form the floor 2, as shown in the appendix Figure 29-2 As shown, the wooden top layer 421 is made of high-quality wood with a thickness of 0.5 mm - 6 mm. The wooden top layer 421 can be used as a decorative layer. The fiber orientation of the wood fibers in the wooden top layer 421 can be basically parallel to their long-edge parts. 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 bonded to the top layer.

[0278] As shown in the appendix Figure 29-3 As shown, the floor 2 is composed of three layers of wood materials, including a wood core strip 432 arranged in the middle, a wooden top layer 431, and a wooden bottom balance layer 430; the wooden top layer 421 is made of high-quality wood. The wooden top layer 431 can be used as a decorative layer, and the wooden bottom balance layer 430 can be made of relatively inexpensive wood. The fiber orientation of the wood fibers in the wooden top layer 431 can be basically parallel to their respective long-edge parts.

[0279] As shown in the appendix Figure 29-4 As shown, the middle core board 442 is made of MDF (medium-density fiberboard) or HDF (high-density fiberboard). Its top layer 441 is based on one or more resin-impregnated layers (such as printed decorative layers and so-called protective layers) and also includes a balance layer 440 that also includes one or more resin-impregnated layers. The whole is bonded and strengthened under heating 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 middle core board.

[0280] From what is shown in the appendix Figure 29-1 shown to what is shown in the appendix Figure 29-4 shown are floors 2 mainly composed of wood materials. Those skilled in the art can optimize according to the above methods and the published parameter data.

[0281] In addition to wood materials, for example, the above-mentioned floors 2 including or selected as high-density fiberboard, medium-density fiberboard, particleboard, or plywood, as well as single-layer wood, where the intermediate layer material can be replaced, there are also, for example, polymer-based cores, which contain thermoplastic materials or thermosetting materials. The thermoplastic materials can contain polyvinyl chloride plastics, preferably mineral-based fillers, etc. Materials with non-wood material main bodies can be adjusted in formulation to have elasticity and toughness similar to those of wood materials and can be further optimized with reference to the above methods and the published parameter data.

[0282] Accordingly, the various aspects of several preferred embodiments disclosed herein are mainly described with reference thereto. However, as will be readily understood by those skilled in the art, other embodiments in addition to the several preferred embodiments disclosed are equally possible within the scope of the disclosed aspects.

[0283] As shown in the appended Figure 14-8 figures to the appended Figure 14-10 figures, the front surface of the floor 2 forms a 90° angle with the upper vertical surface 212, which is commonly referred to in the art as a non-chamfered floor. When adjacent non-chamfered floors 2 are assembled together, the gap at the splicing joint is usually invisible to the naked eye in the middle. Therefore, during the installation of such floors 2, since the edge of the front surface of the non-chamfered floor 2 cannot be damaged, the angle A1 at the connection between the upper surface of the second slanting pressure bar 322 and the upper surface of the toggle lock bar 331 can be slightly increased as shown in the appended Figure 14-8 figures. When the non-chamfered floor 2 to be installed descends, the upper vertical surface 212b is outside the VP vertical line relative to the upper vertical surface 212a of the floor 2a, so that when the floor 2b moves downward, the bottom inclined surface 2249b of the lower tenon of the floor 2b will not touch the front edge of the floor 2a, and the upper vertical surfaces 222a and 222b of the floors 2a and 2b will not collide and rub during the initial stage of installation. During the installation process, as shown in the appended Figure 14-9 figures, the upper vertical surfaces 212a and 212b of the floors 2a and 2b both protrude upward, so that the outer edges of the front surfaces of the floors 2a and 2b will not touch each other, and thus it is easy to damage the right-angle edges of the adjacent floors 2a and 2b. As shown in the appended Figure 14-10 figure is a schematic diagram of the locking and fixing of the floors 2a and 2b with the locking fastener 3 completed.

[0284] In order to enable those of ordinary skill in the art to implement the technical solution of the present utility model without further experimentation, as shown in the appended Figure 14-8 figures, the value of A1 is 153°, while the value of A1 shown in the appended Figure 14-1 figures is 149.7°; it can be seen therefrom that slightly increasing the angle A1 can still enable the locking process of the adjacent floors 2 and the locking fastener 3 without horizontally moving the floor 2 to be installed, and only by maintaining a vertical downward displacement, the locking and fixing of the adjacent floors 2 can be completed. Moreover, the two upper vertical surfaces 212 of the adjacent floors 2 will not touch each other during the installation process, so that the edges and corners of the outer side of the front surface of the non-chamfered floor 2 can be prevented from being damaged.

[0285] It should be noted that the specific data disclosed in all embodiments of the present utility model are provided to enable those of ordinary skill in the art to implement the technical solution of the present utility model without further experimentation. The disclosed specific data do not limit the protection scope of the present utility model to the specific data protection scope. For example, the angle of A and the shape deformation treatment of the locking fastener 3, etc. When the vertical distance V1 value between the horizontal extension line of the upper surface 221 of the lower tenon that cooperates with the locking fastener 3 and the horizontal extension line of the bottom surface 211 of the upper convex body changes, correspondingly, the structure of the locking fastener 3 will also change accordingly, as shown in the attached Figure 14-15 figure. When V1 changes, the angle A1 of the locking fastener 3 and the shapes of, for example, the limit lock head 313 and the upper groove 202 that cooperates with the limit lock head 313 change accordingly, but the locking principle and the 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 limit lock head, respectively abut against the third abutting surface 2021b, the fourth abutting surface 2022b, and the upper surface 2023b of the upper groove 202b on the floor 2b. The upper surface 3132 of the limit lock head is an inclined surface, and correspondingly, the upper surface 2023b of the upper groove is also an inclined surface. And as shown in the attached Figure 10 figure, the upper surface 3132 of the limit lock head is a plane, and as shown in the attached Figure 8 figure, the upper surface 2023 of the upper groove is a plane; as shown in the attached Figure 14-15 figure, when the V1 value is 4.5 mm and the A1 value is 147.9°, the upper vertical surfaces 212 of the adjacent floors 2a and 2b coincide with the VP vertical plane, that is, the installation method is the same as that shown in the attached Figure 14-1 figure to the attached Figure 14-4 figure. And as shown in the attached Figure 14-1 figure, when the V1 value is equal to 3.5 mm, the A1 value is 149.7°. In the second preferred embodiment of the present utility model, the V1 shown in the attached Figure 14-1 figure is equal to 3.5 mm; as shown in the attached Figure 8 figure, the acute angle A5 between the third groove abutting surface 2051 and the horizontal plane preferably has a value of 2.5° ≤ A5 ≤ 10.5°. For example, in this second preferred embodiment, the angle A5 is equal to 6.9°; and in the attached Figure 14-15 figure, when the V1 value is equal to 4.5, in this attached Figure 14-15 figure, the degree of the angle A5 is 8.5°. Of course, this data change is also related to other values; in the second preferred embodiment of the present utility model, the locking fastener 3 shown in the attached Figure 14-1 figure is preferably applicable to the floor 2 with a thickness of 14 mm - 17.5 mm, that is, the vertical distance from the front surface of the floor 2 to the bottom surface of the floor is between 14 mm - 17.5 mm; in the second preferred embodiment, the attached Figure 14-15The shown lock fastener 3 is preferably applicable to floors with a thickness between 16.5 mm and 22 mm. Since the lock fastener 3 does not need to have elastic characteristics, metal materials can usually be selected for production, such as aluminum alloy materials. Therefore, the thickness dimension of the first lock body 31 in the vertical direction can be reduced without affecting the strength of the lock fastener 3. Accordingly, the dimension of the vertical direction width V1 value of the first groove 20 of the floor is correspondingly reduced, that is, the vertical distance V1 value 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 convex body. The proper locking strength between the floor 2 and the lock fastener 3 can still be maintained. For example, when V1 = 2.5 mm, as shown in the appendix Figure 14-19 The shown lock fastener 3 is as shown in the appendix Figure 10 A deformation of the shown lock fastener 3 is as shown in the appendix Figure 14-19 The first lock body 31 of the shown lock fastener 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 ≤ 2.5 mm, it can adapt to a thinner floor 2. For example, in the second preferred embodiment of the present invention, as shown in the appendix Figure 14-19 The V1 value shown is equal to 2.5 mm, as shown in the appendix Figure 14-20 As shown, a step recessed inward toward the bottom surface 332 of the toggle lock bar is formed at the connection between the toggle lock bar abutment surface 334 and the upper surface 331 of the toggle lock bar of the toggle lock bar 33 of the lock fastener 3, which is set as the toggle lock bar support step 3341. The upward inclined surface connected to the toggle lock bar support step 3341 is the toggle lock bar abutment surface 334. The advantage of setting the toggle lock bar support step 3341 is obvious. When the vertical thickness of the upper convex body 21b of the floor 2b is relatively thin, the toggle lock bar support step 3341 can support the bottom surface 211a of the upper convex body when the front of the floor 2b is loaded, so that the upper convex body 21a is not easily deformed; the upper surface 3111 of the first tenon of the lock fastener 3 extends outward and protrudes on the outer side surface 3114 of the first tenon, and the outwardly extending upper surface 3111 of the first tenon is an inclined surface. The connection between the upper surface 3111 of the first tenon and the outer side surface 3114 of the first tenon is higher than the connection between the upper surface 3111 of the first tenon and the limit lock head 313. The purpose of such a design is that the third groove abutment surface 2051a of the upper groove 202a of the floor 2a can abut against the upper surface 3111 of the first tenon, increasing the connection stability between the lock fastener 3 and the floor 2a; therefore, by further reducing the size of the lock fastener 3 in a certain proportion and appropriately adjusting measures such as the angle degree of A1, etc., the lock fastener 3 can be applicable to floors 2 with a thinner thickness, such as floors within a thickness of 8 mm. Therefore, the deformations of some technical features of the lock fastener 3 and the floor 2 applicable to different size floors are still within the protection scope of the claims of the present invention.

[0286] It should be further noted that, as shown in the appendix Figure 14-15 As shown, the shape of the limit lock head 313 of the lock fastener 3 is as shown in the appendix Figure 10A variation of the shown limit lock head 313, a horn-shaped first weight reduction groove 361 is provided on the outer side surface 3114 of the first tenon; a second weight reduction groove 362 is provided on the upper side of the connection between the inner side surface 3133 of the first tenon and the first inclined pressure strip 312; in the same manner and at the same position in the attached Figure 10 The lock fastener 3 is provided with a first weight reduction groove 361 and a second weight reduction groove 362, attached Figure 14-16 The lock fastener is attached Figure 10 A variation of the lock fastener 3 after setting the first weight reduction groove 361 and the second weight reduction groove 362, the purpose is to make the lock fastener 3 lighter in weight and reduce the cost of the lock fastener 3 without affecting the function and strength of the lock fastener 3.

[0287] 2.2.6), as attached Figure 14-4 As shown, when the first lock body 31 is locked and fixed to the floor 2a, and the second lock body 32 and the toggle lock bar 33 are locked and fixed to the floor 2b, the outer surface 3213 of the seventh convex body and the outer surface 3216 of the eighth convex body respectively abut against the lower surface 222b of the adjacent floor 2b and the lower surface 222a of the floor 2a.

[0288] Technical key point: Further restricting the rotation of the lock fastener 3 in a groove 20 of the adjacent floor 2 is the key to solving the locking strength in the vertical direction of the surface of the adjacent floor 2. As attached Figure 14-4 As shown, the outer surface 3213 of the seventh convex body and the outer surface 3216 of the eighth convex body respectively abut against the lower surface 222b of the adjacent floor 2b and the lower surface 222a of the floor 2a. Usually, when the floor 2b is slightly higher than the floor 2a, when the floor 2a is under pressure on the front side, an external force will be generated to make the lock fastener 3 rotate in the direction of arrow A16. However, due to attached Figure 14-4 As shown, the connecting line distance D6 between the lower side edge of the upper rib 3214 of the eighth convex body and the upper side edge of the lower rib 3215 of the seventh rib is greater than the vertical distance L13 between the outer surface 3216 of the eighth convex body and the outer surface 3213 of the seventh convex body (as attached Figure 10 As shown), when the vertical distance L9 value between the lower surfaces 222 on both sides of the adjacent floor 2 is set to be equal to the L13 value, as attached Figure 14-4 As shown, there are mutual abutting and restricting measures between the outer surface 3213 of the seventh convex body and the outer surface 3216 of the eighth convex body of the lock fastener 3 and the lower surfaces 222 on both sides of the adjacent floor 2, so that the lock fastener 3 is not easy to rotate between the adjacent floors 2.

[0289] Therefore, as attached Figure 14-17 As shown, attached Figure 14-17The floor 2 has a total of 7 rows, numbered from row 71 to row 77 respectively; among them, 73 locking fasteners 3 and a long strip locking fastener 3L are connected in the long side direction of the floor 2, and there are a total of 12 locking fasteners 3 in the short side direction of the floor 2. The length of the locking fastener 3L does not exceed the length L2 between the bottom side walls 2g2 of the first grooves at both ends of the side of the floor 2g2 connected to the locking fastener 3L, as shown in the attached Figure 14-16 and the attached Figure 14-17 shown; preferably, multiple locking fasteners 3 with lengths of 15 mm - 300 mm are arranged at intervals on the floor 2 as shown in the attached Figure 14-17 shown. Usually, 3 - 6 locking fasteners 3 with lengths of 30 mm - 60 mm are arranged on the side of the floor 2 with a length of 600 mm, and 1 - 2 locking fasteners 3 with lengths of 30 mm - 60 mm are arranged on the short side.

[0290] As shown in the attached Figure 14-17 shown, the floor 2c2 is relatively in the middle position compared to other floors 2. From the attached Figure 14-17It can be seen that the locking fasteners 3 are locked and fixed to the floor 2c2 on all its peripheral sides. Among them, in the second preferred embodiment, the locking fastener 3 can be more stably locked to the floor 2 under the pressure on the floor compared to the first preferred embodiment. The main reason is that the second preferred embodiment has made corresponding and important improvements to the limiting lock head 313 and the upper groove 202 of the floor 2, enabling the locking fastener 3 to be more stably locked to the side of the floor 2. Another improvement is that the outer surface 3213 of the seventh protrusion and the outer surface 3216 of the eighth protrusion respectively abut against the lower side surfaces 222 on both sides of the adjacent floor 2, further restricting the rotation of the locking fastener 3. When pressure is applied to the front of the floor 2c2, it may cause an external force that could make the locking fastener 3 rotate (for example, the ground flatness exceeds the Chinese national standard GB / T20238 - 2018, which has detailed regulations on the paving, acceptance, and use specifications of floating wooden floors. Article 6 of this standard: Requirements for paving and final acceptance of floating floors. The ground requirement for floating wooden floors in this standard clause is: Use a 2m straightedge to detect the ground flatness, and the maximum chord height between the straightedge and the ground should be ≤ 3mm. For specific reference, see other regulation clauses in Article 6.2.2 of the national standard GB / T20238 - 2018), causing the outer surface 3213 of the seventh protrusion and the outer surface 3216 of the eighth protrusion to respectively squeeze the lower side surfaces 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 periphery of the floor 2c2 is locked and fixed to the adjacent floor 2 in the horizontal direction by multiple locking fasteners 3. And, for example, the floors 2b1, 2b2, and 2b3 adjacent to the floor 2c2 are respectively connected to the floors 2a1, 2a2, and 2a3. Such a connection effect prevents the floor 2c2 in the third row (i.e., row 73) from moving and separating from the adjacent floors 2b1, 2b2, and 2b3 in the horizontal direction. Therefore, even if the locking fastener 3 of the floor 2c2 rotates under the action of an external force, it is restricted by the abutment of the outer surface 3213 of the seventh protrusion and the outer surface 3216 of the eighth protrusion against the lower side surfaces 222 on both sides of the floor 2 adjacent to the floor 2c2, making the locking fastener unable to rotate in the first groove 20c2 of the floor 2c2. Thus, the floor 2c2 and the surrounding floors 2 can undulate as a whole, further reducing the phenomenon of height differences between adjacent floors 2 when the ground flatness is insufficient.

[0291] However, due to the technological requirement of leaving expansion joints between the floor 2 and the tiles or between the floor 2 and the wall, the floor 2a adjacent to the tiles or the wall on one side of the adjacent floor 2 may have the possibility of the locking fastener 3 rotating due to factors such as insufficient ground flatness. When pressure is applied to the front of the floor 2a or 2b, it may cause the locking fastener 3 of the floor 2a adjacent to the tiles or the wall to rotate, which may cause the outer surface 3213 of the seventh protrusion and the outer surface 3216 of the eighth protrusion to respectively squeeze the lower side surface 222 of the adjacent floor 2. Usually, an expansion joint C7 needs to be reserved at the joint between the floor 2a and the wall or the tiles, resulting in the horizontal displacement of the floor 2a adjacent to the wall or the tiles towards the tiles or the wall, as shown in the appendixFigure 14-18 As shown, the locking fastener 3 is combined with the floors 2a and 2b. The floor 2a is close to the wall 50, and there is an expansion joint C7 between the floor 2a and the wall. When the flatness of the ground 60 is uneven (using a 2m straightedge to detect the flatness of the ground, when the maximum chord height between the straightedge and the ground is greater than 3mm or even a higher value), when the front of the floor 2a or the floor 2b is under pressure, it may cause an external force that makes the locking fastener 3 rotate, causing the outer surface 3213 of the seventh convex body and the outer surface 3216 of the eighth convex body to respectively press against the lower surface 222 of the adjacent floor 2. The floor 2a moves towards the wall along the arrow A21 direction, and the locking fastener 3 may rotate. Therefore, it is necessary to further solve the problem of the locking fasteners of the adjacent floors 2 close to the tiles or the wall.

[0292] As shown in the appendix Figure 14-13 As shown, in this second preferred embodiment, the inner inclined surface 2235 of the lower groove is set as an inward concave arc surface.

[0293] The third preferred embodiment of the present utility model:

[0294] As shown in the appendix Figure 15 and the appendix Figure 16 As shown, the appendix Figure 15 is a schematic cross-sectional structure diagram of the locking fastener 3 of the third preferred embodiment of the present utility model, and the appendix Figure 16 is a schematic three-dimensional structure diagram of the locking fastener 3.

[0295] As shown in the appendix Figure 15 As shown, the third lock body 34 replaces the first lock body 31 of the locking fastener 3. The locking fastener 3 without the first lock body 31 and with the third lock body 34 is set as the locking fastener 3" with the third lock body.

[0296] The third lock body 34 includes a first bottom plate 342 and a first clamping strip 343. The first bottom plate 342 is horizontally placed, and one side edge of the first bottom plate 342 is connected to the edge of the intersection of the vertical strip 321 and the second bottom plate 323. With the vertical strip 321 as a reference, in the horizontal direction and / or position, the first bottom plate 342 is on the opposite side of the second bottom plate 323, and the first clamping strip 343 is connected to the other side edge of the upper surface of the first bottom plate 342.

[0297] Furthermore, 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 thickness of the first bottom plate 342 in the vertical direction is the same as the thickness of the second bottom plate 323 in the vertical direction.

[0298] Further, on the horizontal direction and / or position, the first clamping strip 343 is successively provided with a first inner vertical surface 3431, a first upper inclined surface 3432, a first upper surface 3433 and a first outer surface 3434. The first inner vertical surface 3431 faces the direction of the vertical strip 321. The lower side edge of the first inner vertical surface 3431 is connected to the upper surface of the first bottom plate 342. The upper side edge of the first inner vertical surface 3431 is connected to the side edge of the first upper surface 3433 to form an inclined surface which is the first upper inclined surface 3432. The other side edge of the first upper surface 3433 is connected to the upper side edge of the first outer surface 3434. The lower side edge of the first outer surface 3434 is connected to the outer side edge of the upper surface of the first bottom plate 342.

[0299] As shown in the Figure 17-1 accompanying Figure 17-10 figures, as shown in the Figure 15 figures, the third lock body locking part 3" is used in combination with the locking part 3 as shown in the Figure 10 figures to jointly lock and fix the adjacent floors 2a and 2b. Before pre-hanging the locking part 3 with the floor 2a, first pre-hang the third lock body locking part 3" with the floor 2a. The specific steps are as shown in the Figure 17-1 accompanying Figure 17-5 figures and are as follows:

[0300] 3.1.1), as shown in the Figure 17-1 figures, tilt the third lock body locking part 3" at a certain angle so that the lower groove 223a of the floor 2a is hung on the second clamping strip 324, and then rotate the third lock body locking part 3" around the second clamping strip 324 in the lower groove 223a.

[0301] 3.1.2), as shown in the Figure 17-2 figures, the guiding surface 333 on the toggle lock bar of the third lock body locking part 3" abuts against the outer bottom surface 2112a of the upper convex body of the floor 2a. Due to the wedge effect between the upper convex body 21a and the lower tenon 22a, the upper convex body 21a and the lower tenon 22a can be opened a certain distance under the action of an external force, so that the guiding surface 333 on the toggle lock bar moves along the outer bottom surface 2112a of the upper convex body in the opened dotted line part towards the bottom side wall 201a of the first groove.

[0302] 3.1.3), as shown in the Figure 17-3 figures, further slide the guiding surface 333 on the toggle lock bar over the boundary of the outer convex strip 2024a of the upper groove, so that the guiding surface 333 on the toggle lock bar enters the upper groove 202a.

[0303] 3.1.4), as shown in the Figure 17-4As shown, when the external force acting on the upper convex body 21a and the lower tenon 22a is removed, they close and return to the state before opening. The contact surface 334 of the toggle lock bar abuts against the third contact surface 2021a, the inner vertical surface 3241 of the second latch bar abuts against the outer vertical surface 2232a of the lower groove, the bottom surface 3221 of the second inclined pressure bar abuts against the lower inclined surface 225a, and the bottom surface 224a of the lower tenon abuts against the upper surface of the second bottom plate 323, so that the second lock body 32 with the third lock body fastener 3" and the toggle lock bar 33 are locked and fixed to the floor 2a, completing the pre-hanging of the third lock body fastener 3" with the floor 2a. It should be noted that the third lock body fastener 3" is pre-hung on one side of the opposite side of the floor 2a, and the third lock body fastener 3" is pre-hung on the side of the floor 2a at a certain interval on the same side of the floor 2a. Attached Figure 17-5 Shown is a three-dimensional schematic diagram.

[0304] As attached Figure 17-4 As shown, the floor 2 further includes a third lock body fastener 3".

[0305] Among them, attached Figure 17-4 As shown, 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 opposite to the side where the third lock body fastener 3" has been pre-installed; As attached Figure 17-5 Shown is a three-dimensional schematic diagram of the floor 2 with the third lock body fastener 3" pre-hung. 3.2.1), As attached Figure 17-6 As shown. Continue to implement steps 2.1.1) to 2.1.4) of the second preferred embodiment, and pre-hang one of the sides of the fastener 3 opposite to the floor 2a. It should be noted that, as attached Figure 17-6 As shown, pre-hang the first lock body 31 of the fastener 3 on the same side of the floor 2a where the third lock body fastener 3" has been pre-hung, and select at least one vacant position between adjacent third lock body fasteners 3" to pre-hang the fastener 3. Attached Figure 17-7 Shown is the three-dimensional schematic diagram as attached Figure 17-6 As shown.

[0306] As attached Figure 17-6 As shown, the floor 2 further includes a fastener 3 and a third lock body fastener 3".

[0307] 3.2.2), As attached Figure 17-8 As shown, hang the lower groove 223b on the side of the floor 2b where the third lock body fastener 3" has not been pre-hung on the second latch bar 324 of the fastener 3 pre-hung with the floor 2a, and continue to implement steps 2.2.1) to 2.2.6) in the second preferred embodiment to make the fastener 3 and the third lock body fastener 3" jointly combine and lock and fix with the floor 2a. As attached Figure 17-9 Shown is as attachedFigure 17-8 Schematic perspective view.

[0308] 3.2.3), During the locking and fixing process of continuously implementing the steps 2.2.1) to 2.2.6) of the second preferred embodiment, when the third lock body locking part 3" and the locking part 3 are used in combination to lock and fix the adjacent floor 2, after the first lock body 31 is locked and fixed with the floor 2, and at the same time the second lock body 32 and the toggle lock bar 33 are locked and fixed with the adjacent floor 2a and the floor 2b, the lower groove 223b of the floor 2b connected to the second lock body 32 is caught on the first strip 343 of the third lock body locking part 3", so that the inner facade 3431 of the first strip abuts against the outer facade 2232b of the lower groove, and the adjacent floors 2a and 2b are jointly locked and fixed with the locking part 3 and the third lock body locking part 3", as shown in Figure 17-10 Figures I, II, and III in the appendix show the cross-sectional schematic view of the adjacent floors 2a and 2b jointly locked and fixed with the locking part 3 and the third lock body locking part 3", where, as shown in Figure 17-10 Figure I in the appendix shows that the locking part 3 and the third lock body locking part 3" are connected at different positions on the same side of the floors 2a and 2b. To clearly understand how the locking part 3 and the third lock body locking part 3" lock the floors 2a and 2b, as shown in Figure 17-10 Figures II and III in the appendix show the schematic views of the locking part 3 and the third lock body locking part 3" connected to the floors 2a and 2b respectively.

[0309] Technical key point: The third lock body locking part 3" cannot be locked and fixed with the adjacent floor 2 alone in the present invention. The third lock body locking part 3" must be used in combination with the locking part 3 shown in the appendix of the first embodiment to jointly lock and fix the floor 2 as shown in the appendix Figure 4 as shown, or used in combination with the locking part 3 shown in the appendix Figure 2 as shown to jointly lock and fix the floor 2 shown in the appendix Figure 10 as shown; By adding the third lock body locking part 3" at intervals on the same side of the adjacent floors 2 to assist the locking part 3 in jointly locking and fixing the adjacent floors 2, there are mainly the following seven advantages: Figure 8 The first advantage is that it is beneficial to solve the problem that the adjacent floors 2 shown in the appendix

[0310] are not firmly locked and fixed. As can be seen from the appendix Figure 14-18 shown, if the locking part 3 rotates for the floors 2a and 2b, there may be a gap between the floors 2a and 2b. The gap is caused by the rotation of the locking part 3 under external force at the connection of the floors 2a and 2b, resulting in the outer facades 3213 of the seventh protrusion and 3216 of the eighth protrusion respectively squeezing the two adjacent lower facades 222b and 222a against which they abut. Therefore, there will be a gap and / or height difference between the floors 2a and 2b; As shown in Figure 14-18 the appendix Figure 17-10As shown, the third lock body lock fastener 3" and the lock fastener 3 are used in combination to jointly lock and fix the adjacent floors 2a and 2b. The inner facade 3431 of the first strip and the inner facade 3241 of the second strip respectively abut against the outer facade 2232 of the lower groove of the adjacent floor 2, thereby restricting the horizontal movement of the floors 2a and 2b outward to the joint. Since the outer facade 3213 of the seventh protrusion and the outer facade 3216 of the eighth protrusion of the lock fastener 3 respectively abut against the adjacent lower facades 222b and 222a, and the outer facade 3213 of the seventh protrusion and the outer facade 3216 of the eighth protrusion of the third lock body lock fastener 3" respectively abut against the adjacent lower facades 222a and 222b, the lock fastener 3 cannot rotate at the joint of the floors 2a and 2b. It can be seen that the use of the third lock body lock fastener 3" not only strengthens the horizontal locking strength of the adjacent floors 2 on the floor side, but also enables the lock fastener 3 to be stable at the joint of the adjacent floors 2 without rotation, making the adjacent floors 2 firmly locked and fixed in the vertical direction of the floor front.

[0311] The second aspect of the advantage is that the horizontal locking strength of the side of the adjacent floor 2 is increased by 20 - 50% compared with the lock - button floor of the prior art. As shown in the attached Figure 17-10 As shown, at the lower end of the lower tenon 22 and the upper end of the first groove 20, there are respectively two sets of horizontal locking device combinations between layers. That is, at the upper end of the first groove 20 between adjacent floors on both sides, there are respectively the abutment restrictions between the first abutment surface 3131 and the third abutment surface 2021a, and the abutment restrictions between the abutment surface 334 of the toggle lock bar and the third abutment surface 2021b. At the same time, at the lower end of the lower tenon 22a between layers, there are also abutment restriction measures in which the inner facade 3431 of the first strip and the inner facade 3241 of the second strip of the third lock body lock fastener 3" respectively abut against the outer facade 2232b of the lower groove of the adjacent floor 2b and the outer facade 2232a of the lower groove of the floor 2a. In particular, it is preferably that the outer facade 2232 of the lower groove is a right angle relative to the horizontal plane, making the first strip 343 and the second strip 324 of the third lock body lock fastener 3" more stable and firm in locking and fixing with 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 lock - button floor of the prior art.

[0312] The third aspect of the advantage is that since there are respectively two sets of horizontal locking device combinations between two adjacent layers at the lower end of the lower tenon 22 and the upper end of the first groove 20, such a structure can effectively improve the problem of height difference between adjacent wooden floors 2 caused by the combined action of internal stress of wood and / or environmental humidity and temperature in wooden floors, especially single-layer wooden floors 2. Generally, the deformation of the floor 2 with a wooden top layer is caused by an increase or decrease in the humidity level of the floor 2, which can respectively cause the floor to bulge, sink or arch. Especially perpendicular to the fiber orientation, for example, at the corner part or the center part of the short edge part, the parallel arranged floors may be less sensitive to unwanted depressions or arches because the deformations of two adjacent edge parts are very similar. Therefore, as shown in the attached Figure 17-10 figure, when the upper convex body 21 of the adjacent floor 2 expands due to excessive humidity (in the direction of arrow A25) and arches, due to the abutment restrictions between the first abutment surface 3131 and the third abutment surface 2021a on both sides of the adjacent floors at the upper end layer of the first groove 20 and the abutment restrictions between the abutment surface 334 of the toggle lock bar and the third abutment surface 2021b, the arching phenomenon at the joint of the adjacent floors 2 can be reduced. As shown in the attached Figure 17-10 figure, the tightening force in the direction of arrow A26 towards the connection between the floor 2a and the floor 2b; Secondly, since when the floor 2a and the floor 2b and the lock fastener 3 and the third lock body lock fastener 3" are in the locked and fixed state, the outer surfaces 3213 of the seventh convex body and 3216 of the eighth convex body are in mutual abutment with the two lower outer surfaces 222 of the adjacent floor 2. When the lower tenon 22 of the adjacent two floors 2 expands and deforms due to excessive humidity, the inner surfaces 3431 of the first clamping strip and 3241 of the second clamping strip of the third lock body lock fastener 3" provided at the lower end layer of the lower tenon 22a respectively abut against the outer surface 2232 of the lower groove of the adjacent floor 2, and the abutment restriction measures can reduce the phenomenon of downward depression at the joint of the adjacent floors 2 on the front side of the floor 2. Therefore, the horizontal separation between the upper surfaces 212 of the adjacent floors 2 and the vertical height misalignment phenomenon caused by the influence of internal stress of wood and / or environmental humidity and temperature and other factors in the wooden floor 2, especially the single-layer wooden floor 2, can be reduced.

[0313] The fourth aspect of the advantage is that the technical solution of the fourth preferred embodiment of the present invention can be preferably implemented.

[0314] The fifth aspect of the advantage is that the technical solution of the fifth preferred embodiment of the present invention can be preferably implemented.

[0315] The sixth aspect of the advantage is that the technical solution of the sixth preferred embodiment of the present invention can be preferably implemented.

[0316] The seventh aspect of the advantage is that the technical solution of the seventh preferred embodiment of the present invention can be preferably implemented.

[0317] The fourth preferred embodiment of the present invention:

[0318] The fourth preferred object of implementing the present utility model is that there are still a certain number of enterprises in the wood floor manufacturing industry using the grooving equipment of a four-knife-axis four-side planer. The four-knife-axis four-side planer has two upper and lower knife shafts and two left and right knife shafts. Among them, the two upper and lower knife shafts are usually used to process the bottom surface of the floor (including the lower groove 223 that can be processed) and the front surface, and the two left and right knife shafts are usually used to process the grooves in the horizontal direction of the first groove 20 without the upper groove 202. Therefore, the four-knife-axis four-side planer refers to the grooving equipment for processing the upper groove 202 of the floor 2 of the present utility model without an oblique knife shaft. For the manufacturing enterprises using the four-knife-axis four-side planer to process the floor tongue-and-groove, due to the lack of an oblique knife shaft for processing the upper groove 202, in order to fully cover the manufacturing enterprises using the four-knife-axis four-side planer equipment with the technical solution of the present utility model, as shown in the attached Figure 18 and the attached Figure 19 shown, as shown in the attached Figure 18 shown, the lockless fastener 3 of the fourth preferred embodiment of the present utility model, as shown in the attached Figure 19 shown is the floor 2 without an upper groove of the fourth preferred embodiment of the present utility model.

[0319] As shown in the attached Figure 18 shown, the lockless fastener 3 has no limit lock head 313. The lockless fastener 3 without a limit lock head 313 is set as a lockless fastener 3. A slope is formed between the upper side edge of the inner side surface 3113 of the first tenon and the side edge of the upper surface 3111 of the first tenon, which is set as the sixth abutting surface 351. A rib, the fifth rib 352, is formed between the upper side edge of the sixth abutting surface 351 and the upper surface 3111 of the first tenon. The upper surface 3111 of the first tenon is a clamping surface, and the vertical distance V9 between the upper surface 3111 and the bottom surface 3112 of the first tenon is equal to the vertical distance V1 between the bottom surface 211 of the upper convex body and the upper surface 221 of the lower tenon as shown in the attached Figure 19 shown;

[0320] When the second bottom plate 323 of the lockless fastener 3 is in a horizontal state, the upper surface 3111 of the first tenon of the lockless fastener 3 is flush with the surface of the abutting surface 334 of the toggle lock bar in the horizontal direction.

[0321] As shown in the attached Figure 19 shown, the floor 2 has no upper groove 202. The floor 2 without an upper groove 202 is set as a floor without an upper groove 2;

[0322] When the third lock body fastener 3" is placed horizontally, as shown in the attached Figure 20-1 shown in this embodiment; the included angle A1 formed by the upper surface of the second inclined pressure bar 322 of the third lock body fastener 3" and the upper surface 331 of the toggle lock bar is set as: 35° ≤ A1 ≤ 180°, preferably 86° ≤ A1 ≤ 180°. As shown in the attached Figure 20-1 shown, A1 is equal to 180°. From the attached Figure 20-2As can be seen, when the angle A1 is equal to 121°, the third lock body lock fastener 3" will have a certain deformation, but its function and role are exactly the same as those of the third lock body lock fastener 3" shown in the attachment; therefore, in this fourth preferred embodiment, the angle A1 is equal to 180° is used as the implementation scheme for description; and the toggle lock bar 33 is appropriately extended. As shown in the attachment, at the end of the toggle lock bar 33 of the third lock body lock fastener 3", an eleventh convex body 3321 is horizontally extended. The eleventh convex body 3321 includes an upper surface 3323 of the eleventh convex body. The upper surface 3323 of the eleventh convex body partially coincides with the abutting surface 334 of the toggle lock bar of the third lock body lock fastener 3". The upper surface 3323 of the eleventh convex body includes the abutting surface 334 of the toggle lock bar; the upper surface 3323 of the eleventh convex body is parallel to the upper surface of the second bottom plate 323. The upper surface 3323 of the eleventh convex body is a clamping surface, and the vertical distance V8 between the upper surface 3323 of the eleventh convex body and the upper surface of the second bottom plate 323 is equal to the vertical distance V10 between the bottom surface 211 of the upper convex body and the bottom surface 224 of the lower tenon (as shown in the attachment). Figure 20-1 As shown, when the angle A1 is equal to 180°, the third lock body lock fastener 3" is used as the implementation scheme for description; and the toggle lock bar 33 is appropriately extended. As shown in the attachment, at the end of the toggle lock bar 33 of the third lock body lock fastener 3", an eleventh convex body 3321 is horizontally extended. The eleventh convex body 3321 includes an upper surface 3323 of the eleventh convex body. The upper surface 3323 of the eleventh convex body partially coincides with the abutting surface 334 of the toggle lock bar of the third lock body lock fastener 3". The upper surface 3323 of the eleventh convex body includes the abutting surface 334 of the toggle lock bar; the upper surface 3323 of the eleventh convex body is parallel to the upper surface of the second bottom plate 323. The upper surface 3323 of the eleventh convex body is a clamping surface, and the vertical distance V8 between the upper surface 3323 of the eleventh convex body and the upper surface of the second bottom plate 323 is equal to the vertical distance V10 between the bottom surface 211 of the upper convex body and the bottom surface 224 of the lower tenon (as shown in the attachment). Figure 20-1 As shown in the attachment, at the end of the toggle lock bar 33 of the third lock body lock fastener 3", an eleventh convex body 3321 is horizontally extended. The eleventh convex body 3321 includes an upper surface 3323 of the eleventh convex body. The upper surface 3323 of the eleventh convex body partially coincides with the abutting surface 334 of the toggle lock bar of the third lock body lock fastener 3". The upper surface 3323 of the eleventh convex body includes the abutting surface 334 of the toggle lock bar; the upper surface 3323 of the eleventh convex body is parallel to the upper surface of the second bottom plate 323. The upper surface 3323 of the eleventh convex body is a clamping surface, and the vertical distance V8 between the upper surface 3323 of the eleventh convex body and the upper surface of the second bottom plate 323 is equal to the vertical distance V10 between the bottom surface 211 of the upper convex body and the bottom surface 224 of the lower tenon (as shown in the attachment). Figure 18 As shown in the attachment.

[0323] As shown in the attachment Figure 21-1 to the attachment Figure 21-4 As shown, it is a schematic diagram of the typical installation steps for the third lock body lock fastener 3" shown in the fourth preferred embodiment of the present invention to be installed in the pre-hung non-grooved floor 2 shown in the attachment. The specific steps are as follows: Figure 19 As shown in the attachment, the third lock body lock fastener 3" is installed in the pre-hung non-grooved floor 2 shown in the attachment Figure 18 As shown in the attachment, the schematic diagram of the typical installation steps is as follows:

[0324] 4.1.1), Lock and fix the third lock body lock fastener 3" at a certain interval on one of the opposite sides of the non-grooved floor 2. As shown in the attachment, first, tilt the third lock body lock fastener 3" at a certain angle so that the lower groove 223a of the non-grooved floor 2a is hung on the second strip 324. The third lock body lock fastener 3" rotates in the lower groove 223a around the second strip 324 in the direction of arrow A16, so that the upper end side edge of the eleventh convex body 3321 of the third lock body lock fastener 3" abuts against the bottom surface 211a of the upper convex body; Figure 21-1 As shown in the attachment, first, tilt the third lock body lock fastener 3" at a certain angle so that the lower groove 223a of the non-grooved floor 2a is hung on the second strip 324. The third lock body lock fastener 3" rotates in the lower groove 223a around the second strip 324 in the direction of arrow A16, so that the upper end side edge of the eleventh convex body 3321 of the third lock body lock fastener 3" abuts against the bottom surface 211a of the upper convex body;

[0325] 4.1.2), As shown in the attachment Figure 21-1 As shown in the attachment, the eleventh convex body 3321 presses the bottom surface 211a of the upper convex body upward. 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 toggle lock bar, the second strip 324 moves downward along the outer surface 2232a of the lower groove. As shown in the attachment, during the rotation of the third lock body lock fastener 3", the bottom surface 3221 of the second inclined pressure strip abuts against the lower inclined surface 225a, and the upper end side edge of the eleventh convex body 3321 abuts against the bottom surface 211a of the upper convex body; Figure 21-2 As shown in the attachment, during the rotation of the third lock body lock fastener 3", the bottom surface 3221 of the second inclined pressure strip abuts against the lower inclined surface 225a, and the upper end side edge of the eleventh convex body 3321 abuts against the bottom surface 211a of the upper convex body;

[0326] 4.1.3), as shown in the appendix Figure 21-3 As shown, continue to rotate the third lock body lock fastener 3" in the direction of arrow A16, so that the upper end side of the eleventh convex body 3321 of the third lock body lock fastener 3" squeezes the bottom surface of the upper convex body 211a upward. Due to the wedge effect between the upper convex body 21a and the lower tenon 22a, the upper convex body 21a and the lower tenon 22a can open a certain distance under the action of an external force, so that the eleventh convex body 3321 moves along the bottom surface 211a of the upper convex body in the open dotted line part towards the bottom side wall 201a of the first groove;

[0327] 4.1.4), as shown in the appendix Figure 21-4 As shown, the upper convex body 21a and the lower tenon 22a lose their closure due to the action of an external force, so that the bottom surface of the second inclined pressure bar 3221 abuts against the lower inclined surface 225a of the floor 2a without an upper groove, the bottom surface of the lower tenon 224a abuts against the upper surface of the second bottom plate 323, the inner vertical surface 3248 of the second clamping bar abuts against the outer vertical surface 2232a of the lower groove, and the upper surface 3323 of the eleventh convex body abuts against the bottom surface 211a of the upper convex body, so that the third lock body lock fastener 3" is locked and fixed with the floor 2a without an upper groove, and the pre-hanging of the third lock body lock fastener 3" with the floor 2a without an upper groove is completed.

[0328] As shown in the appendix Figure 21-5 As shown, the third lock body lock fastener 3" is fixed at a certain distance on the side of the floor 2a without an upper groove, and there is no third lock body lock fastener 3" on the side opposite to the side of the floor 2a without an upper groove where the third lock body lock fastener 3" is located.

[0329] As shown in the appendix Figure 21-4 As shown, the floor 2 without an upper groove further includes a third lock body lock fastener 3".

[0330] Technical key point: It can be seen from the appendix Figure 20-1 As shown that the second inclined pressure bar 322 and the toggle lock bar 33 are extended relative to the third preferred embodiment shown in the appendix Figure 15 As shown of the third lock body lock fastener 3". In order to prevent the pressure from directly pressing on the upper surface 3323 of the eleventh convex body through the bottom surface 211a of the upper convex body of the floor 2a without an upper groove when the front of the floor 2a without an upper groove is under pressure, resulting in the toggle lock bar 33 being easily bent and deformed downward, as shown in the appendix Figure 21-4 As shown; therefore, as shown in the appendix Figure 20-1 As shown, the thickness V3 of the toggle lock bar 33 and the thickness V4 of the second inclined pressure bar 322 are appropriately thickened relative to the thickness of the lock fastener 3 shown in the second preferred embodiment in the appendix Figure 14-13 As shown. Usually, the V3 and V4 of the third lock body lock fastener 3" shown in the appendix Figure 20-1 As shown are set as: 0.85 mm ≤ V3 ≤ 2.5 mm, preferably 1.1 mm ≤ V3 ≤ 1.8 mm, where preferably V4 ≥ V3;

[0331] As shown in the appended Figure 21-6 and the appended Figure 21-7 shown is the appended Figure 21-4 The upper-groove-free floor 2 with the third lock body lock fastener 3" and the headless lock fastener 3 is pre-hung. Since the headless lock fastener 3 is pre-hung on the same side of the third lock body lock fastener 3" of the upper-groove-free floor 2a with the third lock body lock fastener 3", and the headless lock fastener 3 is arranged at least on the side of the space between two adjacent third lock body lock fasteners 3", in order to enable those skilled in the art to clearly understand the pre-hanging process of the headless lock fastener 3 and the floor 2a with the pre-hung third lock body lock fastener 3", the third lock body lock fastener 3" is removed during the demonstration in the appended Figure 21-6 During the demonstration process, the third lock body lock fastener 3" is removed;

[0332] 4.2.1), as shown in the appended Figure 21-6 shown, the headless lock fastener 3 is tilted at a certain angle so that the sixth abutting surface 351 abuts against the bottom surface 211a of the upper convex body. At this time, the vertical distance V11 between the abutment of the sixth abutting surface 351 and the bottom surface of the rotating rib 314 ≤ the vertical distance V1 between the bottom surface 211a of the upper convex body and the upper surface 221a of the lower tenon. The first tenon 311 of the headless lock fastener 3 is translated towards the bottom side wall 201a of the first groove so that the rotating rib 314 abuts against the upper surface 221a of the lower tenon.

[0333] 4.2.2), as shown in the appended Figure 21-7 shown, 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 toggle lock bar abuts against the upper vertical surface 212a, the fifth rib 352 or the sixth abutting surface 351 abuts against the bottom surface 211a of the upper convex body, the rotating rib 314 abuts against the upper surface 221a of the lower tenon, and the headless lock fastener 3 and the third lock body lock fastener 3" are arranged at intervals on the same side of the upper-groove-free floor 2a, and the pre-hanging of the headless lock fastener 3 and the upper-groove-free floor 2a is completed.

[0334] The upper-groove-free floor 2 further includes a headless lock fastener 3 and a third lock body lock fastener 3".

[0335] As shown in the appended Figure 22-1 to the appended Figure 22-4 shown is a schematic diagram of the typical installation steps of the combined use of the third lock body lock fastener 3" and the headless lock fastener 3 to jointly lock and fix the upper-groove-free floor 2a and the upper-groove-free floor 2b. The specific steps are as follows: 4.3.1), as shown in the appended Figure 22-1As shown, lift the floor 2b without upper groove to a certain height, so that the lower groove 223b on one side of the floor 2b without the third lock body lock fastener 3" is hung on the second card strip 324 of the lockless lock fastener 3 already set on the floor 2a, and the outer part of the lower tenon 22b of the floor 2b without upper groove falls into the second groove 325 of the lockless lock fastener 3.

[0336] 4.3.2), as shown in the appendix Figure 22-2 As shown, press down the floor 2b without upper groove. The intersection of the lower groove guiding surface 223b and the bottom surface 224b of the lower tenon of the floor 2b without upper groove abuts against the upper surface of the second bottom plate 323 of the lockless lock fastener 3, so that the first tenon 311 rotates around the rotating strip 314 against the support point S5 on the upper surface 221a of the lower tenon in the first groove 20a. It should be further noted that during the rotation of the first tenon 311, the first tenon 311 will rotate and move along the upper surface 221a of the lower tenon towards the outer side of the notch of the first groove 20a, so that the support point S5 where the first tenon 311 rotates is not limited to the current horizontal position point. Therefore, the "support point S5" can also be extended to the "support area S5"; during the rotation of the lockless lock fastener 3, the fifth strip 352 presses up against the bottom surface 211a of the upper convex body. Due to the wedge effect between the upper convex body 21a and the lower tenon 22a, the upper convex body 21a and the lower tenon 22a can open a certain distance under the action of external force, so that the fifth strip 352 moves along the bottom surface 211a of the upper convex body along the dotted line towards the notch direction of the first groove 20a;

[0337] 4.3.3) As shown in the appendix Figure 22-2 As shown, while pressing down the floor 2b without upper groove to be installed, the upper guiding surface 333 of the toggle lock bar moves along the upper dotted line bottom surface 211bd of the upper convex body of the floor 2b without upper groove towards the bottom side wall 201b of the first groove.

[0338] 4.3.4), as shown in the appendix Figure 22-3 As shown, during the rotation of the first tenon 311 around the rotating strip 314 in the first groove 20a, the lower side edge of the outer surface 2232b of the lower groove of the floor 2b without upper groove adjacent to the floor 2a abuts against the upper inclined surface 3432 of the first card strip 343 of the first card strip with the third lock body lock fastener 3" on the floor 2a without upper groove.

[0339] 4.3.5), as shown in the appendix Figure 22-4As shown, when the fifth rib 352 slides over the highest tension point on the bottom surface 211a of the upper convex body, the upper convex body 21a and the lower tenon 22a gradually close and return to the state before opening due to the gradual loss of external force, causing the upper surface 3111 of the first tenon to abut against the bottom surface 211a of the upper convex body, the bottom surface 3112 of the first tenon to abut against the upper surface 221a of the lower tenon, the bottom surface 3121 of the first diagonal pressing strip to abut against the lower inclined surface 225a, and the first lock body 31 of the lockless lock fastener 3 to be locked and fixed in the vertical direction of the floor front with the connecting upper-groove-free floor 2a;

[0340] 4.3.6), as shown in the appendix Figure 22-4 As shown, the abutting surface 334 on the toggle lock strip abuts against the bottom surface 211b of the upper convex body, causing the bottom surface 3221 of the second diagonal pressing strip to abut against the lower inclined surface 225b of the upper-groove-free floor 2b, the bottom surface 224b of the lower tenon to abut against the upper surface of the second bottom plate 323, and the inner vertical surface 3241 of the second strip to abut against the outer vertical surface 2232b of the lower groove, so that the upper-groove-free floor 2b is locked and fixed in the vertical direction of the floor surface with the toggle lock strip 33 and the second lock body 32;

[0341] 4.3.7), as shown in the appendix Figure 22-4 As shown, the lower vertical surfaces 222a of the adjacent upper-groove-free floors 2a and 222b of the upper-groove-free floor 2b respectively abut against the outer vertical surface 3216 of the eighth convex body and the outer vertical surface 3213 of the seventh convex body of the lockless lock fastener 3. At the same time, the lower vertical surfaces 222a of the adjacent upper-groove-free floors 2a and 222b of the upper-groove-free floor 2b also respectively abut against the outer vertical surface 3213" of the seventh convex body and the outer vertical surface 3216" of the eighth convex body of the lock fastener 3" with the third lock body, so that the lock fastener 3" with the third lock body and the lockless lock fastener 3 are used in combination to jointly lock and fix the adjacent upper-groove-free floors 2a and 2b, and the fronts of the two adjacent floors 2 are flush.

[0342] 4.3.8), as shown in the appendix Figure 22-4 As shown, the inner vertical surface 3431 of the first convex strip and the inner vertical surface 3241 of the second strip of the lock fastener 3" with the third lock body respectively abut against the outer vertical surface 2232b of the lower groove of the floor 2b and the outer vertical surface 2232a of the lower groove of the floor 2a, realizing the locking and fixing of the adjacent upper-groove-free floors 2a and 2b in the horizontal direction of the floor side.

[0343] The fifth preferred embodiment of the present utility model:

[0344] Another advantage of using the third lock body lock fastener 3" in the present utility model is that it can implement the fifth preferred embodiment. Since in the personalized products in this field, the floor 2 with an arc-shaped side usually can only use a flat male tenon and female groove structure and is assisted by glue bonding for installation, the fifth preferred embodiment of the present utility model can use the technical solution of the present utility model to achieve the snap connection of the arc-shaped side floor 2, that is, by pressing vertically, the adjacent arc-shaped side floors 2a and the arc-shaped side floor 2b with the same arc-shaped side as the arc-shaped side floor 2a are locked and fixed by using the lock fastener 3 and the combined use of the third lock body lock fastener 3", as shown in the attached Figure 23-1 The figure shows a schematic diagram of the arc-shaped side floors 2a and 2b assembled together. As shown in the attached Figure 23-2 The figure further describes the connection between the adjacent arc-shaped side floors 2a and 2b through the partial area R1 of the side of the two adjacent connecting arc-shaped edges of the arc-shaped side floors 2a and 2b as shown.

[0345] The arc-shaped side floor 2 in the fifth preferred embodiment of the present utility model is the upper-groove-free floor 2 in the fourth preferred embodiment of the present utility model, the lock fastener 3 is the lock-head-free lock fastener 3 in the fourth preferred embodiment, and in the fifth preferred embodiment of the present utility model, the lock-head-free lock fastener 3 has a seventh convex body 3211 and no eighth convex body 3212.

[0346] As shown in the attached Figure 23-3 The figure shows that in the vertical direction, the bottom surface 3121 of the first inclined pressure bar of the lock fastener 3 is slightly higher than the bottom surface 3221 of the second inclined pressure bar, so that the bottom surface 3121 of the first inclined pressure bar and the bottom surface 3221 of the second inclined pressure bar are in a non-mirror image relationship with the vertical center line VP. Taking the vertical center line VP as the center line, the bottom surface 3221 of the second inclined pressure bar is mirrored to form a reference line of the bottom surface 3221d of the second inclined pressure bar. As shown in the attached Figure 23-3 The figure shows that the vertical distance V21 by which the bottom surface 3121 of the first inclined pressure bar is higher than the bottom surface 3221 of the second inclined pressure bar. The value of V21 is related to the radian size of the arc-shaped side of the arc-shaped side floor 2, that is, related to the radius size of the arc-shaped side constituting the arc-shaped side floor 2. Usually, V21≥0.3mm can be set, preferably V21>0.76mm, which can basically be applicable to the radius greater than 100mm for forming the arc. The larger the radius of the arc-shaped side floor constituting the arc, the smaller the value of V21.

[0347] Further, a seventh convex body 3211 is provided on the first side elevation 3227 of the vertical strip 321, and there is no eighth convex body 3212 on the second side elevation 3228 of the vertical strip. The horizontal distance between the vertical extension line of the second side elevation 3228 of the vertical strip 321 and the vertical extension line of the outer surface 3213 of the seventh convex body is L21. The horizontal distance between the vertical extension line of the outer surface 3213 of the seventh convex body and the vertical extension line of the inner surface 3241 of the second locking strip is L22. Attached Figure 23-3 The shown locking fastener 3 is a deformation of the locking fastener 3 in the fourth preferred embodiment of the present invention. Appropriately extending the upper surface 3111 of the first tenon of the locking fastener 3 in the direction of the outer surface 3114 of the first tenon is beneficial to increasing the contact area between the bottom surface 211 of the upper convex body of the floor 2 and the upper surface 3111 of the first tenon. When a relatively large pressure is applied to the front surface of the floor 2, due to the mutual extrusion between the upper surface 3111 of the first tenon of the locking fastener 3 and the bottom surface 211 of the upper convex body of the floor 2, the contact part of the bottom surface 211 of the upper convex body of the floor 2 is recessed upward. Figure 18

[0348] In the fifth preferred embodiment of the present invention, the third lock body locking fastener 3" is the third lock body locking fastener 3" in the fourth preferred embodiment of the present invention. And in the fifth preferred embodiment of the present invention, the third lock body locking fastener 3" has an eighth convex body 3212 and no seventh convex body 3211. As attached Figure 23-4 Shown, there is a third lock body locking fastener 3". An eighth convex body 3212 is provided on the second side elevation 3228 of the vertical strip 321, and there is no seventh convex body 3211 on the first side elevation 3227 of the vertical strip. The horizontal distance between the vertical extension line of the first side elevation 3227 of the vertical strip and the vertical extension line of the outer surface 3216 of the eighth convex body is L23. The horizontal distance L24 between the vertical extension line of the outer surface 3216 of the eighth convex body and the vertical extension line of the inner surface 3431 of the first locking strip is set. The horizontal distance L25 between the vertical extension line of the first side elevation 3227 of the vertical strip and the vertical extension line of the inner surface 3241 of the second locking strip is attached Figure 23-4 The shown third lock body locking fastener 3" is attached in the fourth preferred embodiment of the present invention Figure 20-2 The shown third lock body locking fastener 3" is a deformation of the third lock body locking fastener 3" in the fourth preferred embodiment of the present invention. Appropriately extending the upper surface 3323 of the eleventh convex body in the direction of the first locking strip 343 is beneficial to increasing the contact area with the bottom surface 211 of the upper convex body of the floor 2. When a relatively large pressure is applied to the front surface of the floor 2, due to the mutual extrusion between the upper surface 3323 of the eleventh convex body and the bottom surface 211 of the upper convex body of the floor 2, the contact part of the bottom surface 211 of the upper convex body of the floor 2 is recessed upward.

[0349] ​In the fifth preferred embodiment of the present utility model, it is further set that the value of L21 ≤ the value of L23, preferably the value of L21 is equal to the value of L23, and the set value of L21 is less than the vertical distance L9 between the lower vertical surface 222a of the adjacent floor 2a and the lower vertical surface 222b of the floor 2b, as shown in the appendix Figure 14-4 As shown, when the preferred aluminum alloy material is used for the lock fastener 3 and the third lock body lock fastener 3", generally the value of L21 should be greater than the value of 0.8 mm, preferably 1.1 mm ≤ L21 ≤ 2.2 mm. For example, in this fifth preferred embodiment, the value of L21 is equal to the value of L23, and among them, L21 is equal to 1.98 mm;

[0350] In the fifth preferred embodiment of the present utility model, it is further set that the value of L22 is equal to the value of L24, and the set value of L24 is less than the value of L25.

[0351] In the fifth preferred embodiment of the present utility model, as shown in the appendix Figure 23-4 As shown, when the upper surface of the second bottom plate 323 of the third lock body lock fastener 3" is in the same plane as the upper surface of the second bottom plate 323 of the lock fastener 3 shown in the appendix Figure 23-3 As shown, the bottom surface 3221 of the second inclined pressure bar of the third lock body lock fastener 3" is set to be not lower than the bottom surface 3211 of the first inclined pressure bar of the lock fastener 3 shown in the appendix Figure 23-3 As shown; as shown in the appendix Figure 23-5 As shown in the partial overlapping cross-sectional schematic diagram of the lock fastener 3 and the third lock body lock fastener 3", the appendix Figure 23-6 is the three-dimensional schematic diagram of the lock fastener 3 in the fifth preferred embodiment of the present utility model, and the appendix Figure 23-7 is the three-dimensional schematic diagram of the third lock body lock fastener 3" in the fifth preferred embodiment of the present utility model.

[0352] It should be noted that when using the lock fastener 3 and the third lock body lock fastener 3" to lock and fix the adjacent floors 2a and 2b of the arc side, the first thing to determine is two sets of fixed data. The first set of fixed data is the data of the lock fastener 3 shown in the appendix Figure 23-3 and the third lock body lock fastener 3" shown in the appendix Figure 23-4 shown, but does not include the required cutting length; the second set of fixed data is the data in the second preferred embodiment as shown in the appendix Figure 14-1The value of L4, i.e., 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 arc-shaped side floor 2; based on the above two sets of fixed data, according to the radian size of the arc-shaped side floor 2, that is, the different arc radii that make up the arc-shaped side floor 2, four sets of variable data are calculated respectively: the cutting length L27 of the locking fastener 3, the cutting length L28 of the locking fastener 3" with the third lock body, the horizontal distance L5a between the vertical extension line of the outer facade 2232a of the lower groove of the floor 2a and the vertical extension line of the lower facade 222a of the floor 2a, and the horizontal distance L5b between the vertical extension line of the outer facade 2232b of the lower groove of the floor 2b adjacent to the floor 2a and the vertical extension line of the lower facade 222b of the floor 2b. And the value of L5a and the value of L5b are usually not necessarily the same. If the values of L21 and L23 are set to be equal, on the same arc-shaped side edge, the cutting length L27 of the locking fastener 3 is equal to the cutting length L28 of the locking fastener 3" with the third lock body.

[0353] Generally, those skilled in the art commonly use a computer numerical control milling machine or a computer numerical control machining center to process the arc-shaped side floor 2. The advantages of such a structural design are obvious. During processing, only a set of milling cutters for the first groove 20 and the milling cutters for the lower groove 223 of the lower tenon bottom surface 224 of the floor 2 are required to perform automatic high-precision processing according to the imported data. The fifth preferred embodiment of the present invention further provides the following step methods for calculating the values of L5a, L5b, L27, and L28:

[0354] First, consider that the horizontal position of the locking fastener 3 and the arc-shaped side floor 2b is based on the need to make the connection between the adjacent arc-shaped side floors 2a and 2b stable. As shown in the fourth preferred embodiment, as shown in the attached Figure 22-4 figure, the abutting surface 334 on the toggle lock bar abuts against the upper tenon bottom surface 211b, so that the bottom surface 3221 of the second diagonal pressure bar abuts against the lower inclined surface 225b of the floor 2b without the upper groove, the lower tenon bottom surface 224b abuts against the upper surface of the second bottom plate 323, and the inner vertical surface 3241 of the second locking bar abuts against the outer facade 2232b of the lower groove, so that the floor 2b without the upper groove is vertically locked and fixed with the toggle lock bar 33 and the second lock body 32 on the floor surface. Since the arc-shaped side floors 2a and 2b are arc-shaped sides, and the locking fastener 3 is a straight long strip shape, such a locking method generally does not affect the mutual abutting surface between the locking fastener 3 and the horizontal planes of the arc-shaped side floors 2a and 2b by the radius value of the arc-shaped side, but the mutual abutting surfaces between the inclined surfaces and the vertical surfaces of the arc-shaped side floors 2a and 2b will change according to the radius value of the arc-shaped side floor 2.

[0355] The first step is to determine the value of the length L27 of the lock fastener 3. As shown in the appendix Figure 23-8 It can be seen that the first lock body 31 faces the concave arc-shaped side floor 2a, while the second lock body 32 and the toggle lock bar 33 face the side of the convex arc-shaped side floor 2b. First, a set of conversion formulas will be given, and then the basis for forming these formulas will be further explained. The known parameters are set as follows: the vertical distance L9 between the lower vertical surface 222a of the floor 2a and the lower vertical surface 222b of the floor 2b, the radius of the arc forming the arc-shaped side floor 2b is set as R5, and the horizontal distance between the vertical extension line of the second side vertical surface 3228 of the vertical bar and the vertical extension line of the seventh convex outer surface 3213 is L21; Preferably, the value of L21 of the lock fastener 3 is set to be equal to L23 of the third lock body lock fastener 3", and the value of L27 is set to be equal to the value of L28.

[0356] Set VP as the vertical center line between adjacent floors. As shown in the appendix Figure 23-8 The schematic diagram of the upper end region R2 part shown is the cross-sectional schematic diagram of adjacent arc-shaped side floors 2a and 2b, and the lower end region R1 part is the top view of the connection of adjacent arc-shaped side floors 2a and 2b. As shown in the appendix Figure 23-8 Shown are the curve of the vertical center line VP, the dotted curve 222as of the lower vertical surface 222a of the floor 2a, the dotted curve 222bs of the lower vertical surface 222b of the floor 2b, and the horizontal center line HP20 passing through the center of the circle.

[0357] As shown in the appendix Figure 23-8 Shown, preferably, the seventh convex outer surface 3213 of the lock fastener 3 abuts against the lower inclined surface 225b of the arc-shaped side floor 2b. Since the arc-shaped side floor 2b is of a convex shape, the seventh convex outer surface 3213 of the lock fastener 3 abuts against the coordinate point on the lower vertical surface 222b0. The vertical extension line of the second side vertical surface 3228 of the vertical bar intersects the arc-shaped dotted line 222as of the arc-shaped lower vertical surface 222a of the arc-shaped side floor 2a to form two coordinate points 222as1 and 222as2 respectively. The vertical distance between the horizontal extension line HP21 of the two coordinate points 222as1 and the horizontal extension line HP22 of the coordinate point 222as2 is the value of L27, that is, the seventh convex outer surfaces 3213 on both sides of the lock fastener 3 respectively abut against the two coordinate points 222as1 and 222as2 of the arc-shaped side floor 2. From the appendix Figure 23-8 Shown, the formula can be obtained:

[0358] As shown in the appendix Figure 23-8As can be seen, when the paddle lock bar 33 and the second lock body 32 are on the side of the arc-shaped side floor 2b with a convex shape, the bottom surface 3221 of the second diagonal bar can be abutted against the lower inclined surface 225b of the arc-shaped side floor 2b, and the bottom surface 3221 of the second diagonal bar abuts against the coordinate point 225b0 on the lower inclined surface 225b of the arc-shaped side floor 2b.

[0359] Further calculate the horizontal distance L5a between the vertical extension line of the outer surface 2232a of the lower groove of the floor 2a and the vertical extension line of the lower surface 222a of the arc-shaped side floor 2a, and the horizontal distance L5b between the vertical extension line of the outer surface 2232b of the lower groove of the arc-shaped side floor 2b adjacent to the arc-shaped side floor 2a and the vertical extension line of the lower surface 222b of the arc-shaped side floor 2b. As shown in the appendix Figure 23-9 As shown, set the center line VPb1 of the vertical extension line of the inner surface 3241 of the second locking bar. The center line VPb1 intersects with the horizontal extension line HP21 and the horizontal extension line HP22 to form two coordinate points 2232bs1 and 2232bs2 respectively. From the appendix Figure 23-9 As shown, the formula for obtaining the value of L5b is: L5b = L5 - L9 - L21.

[0360] Furthermore, as shown in the appendix Figure 23-10 As shown, set the center line VPa1 of the vertical extension line of the inner surface 3431 of the first locking bar of the third lock body locking part 3". The center line VPb1 intersects with the horizontal center line HP20 to form a coordinate point 2232a0. From the appendix Figure 23-9 As shown, the formula for obtaining the value of L5a is: L5a = L5.

[0361] As shown in the appendix Figure 23-9 As shown in the appendix Figure 23-10 As shown and can be obtained from the appendix, when the second lock body 32 and the paddle lock bar 33 of the locking part 3 and the first locking bar 343 of the third lock body locking part 3" are on the side of the arc-shaped side floor 2b with a convex shape, the value of L5a is greater than the value of L5b.

[0362] As shown in the appendix Figure 23-9As shown in the figure, the vertical distance V21 from the bottom surface 3121 of the first diagonal pressure bar to the bottom surface 3221 of the second diagonal pressure bar in the vertical direction, where the value of V21 is related to the radian size of the arc side of the arc side floor 2. Usually, V21 ≥ 0.3mnm can be set, preferably V21 > 0.76mm, which can be applicable to the size with a radian radius value greater than 100mm. Such design requirements can enable the locking part 3 and the arc side floor 2a to be locked and fixed, the upper surface 3111 of the first tenon can abut against the bottom surface 211a of the upper convex body of the arc side floor 2a, the bottom surface 3112 of the first tenon can abut against the upper surface 221a of the lower tenon of the arc side floor 2a, and the locking part 3 and the arc side floor 2a can be locked and fixed in the vertical direction.

[0363] As shown in the Figure 23-9 figure, the upper surface of the second bottom plate 323 of the locking part 3 abuts against the bottom surface 224b of the lower tenon of the arc side floor 2b, the bottom surface 3221 of the second diagonal pressure bar of the locking part 3 abuts against the lower inclined surface 225b of the arc side floor 2b, the abutting surface 334 of the toggle lock bar of the locking part 3 abuts against the bottom surface 211b of the upper convex body of the arc side floor 2b, and the inner vertical surface 3241 of the second clamping bar of the locking part 3 abuts against two coordinate points 2232bs1 and 2232bs2 of the arc-shaped lower groove outer surface 2232bs of the lower groove outer surface 2232b of the arc side floor 2b, so that the locking part 3 and the arc side floor 2b are locked and fixed in the vertical direction.

[0364] As shown in the Figure 23-10 figure, when the third lock body locking part 3" and the locking part 3 are used in combination to jointly lock the adjacent arc side floors 2a and 2b, the first clamping bar 343 of the third lock body locking part 3" and the second clamping bar 324 of the locking part 3 are on the same side. And after the third lock body locking part 3" is locked and fixed with the arc side floor 2a, the upper surface 3323 of the eleventh rib of the third lock body locking part 3" abuts against the bottom surface 211a of the upper convex body of the arc side floor 2a. It should be noted here that the locking part 3 and the third lock body locking part 3" are arranged at intervals on the side of the arc side floor 2. The upper surface of the second bottom plate 323 of the third lock body locking part 3" abuts against the bottom surface 224a of the lower tenon of the arc side floor 2a, the upper surface of the first bottom plate 342 of the third lock body locking part 3" abuts against the bottom surface 224b of the lower tenon of the arc side floor 2b, the inner vertical surface 3431 of the first clamping bar of the third lock body locking part 3" abuts against two coordinate points 2232bs3 and 2232bs4 of the arc-shaped lower groove outer surface 2232bs of the lower groove outer surface 2232b of the arc side floor 2b, and the inner vertical surface 3241 of the second clamping bar of the third lock body locking part 3" abuts against the coordinate point 2232a0 of the lower groove outer surface 2232a of the arc side floor 2a, so that the third lock body locking part 3" is locked and fixed with the arc side floors 2a and 2b in the horizontal direction.

[0365] As shown in the attached Figure 23-9 figure, after the locking fastener 3 is locked and fixed to the arc-shaped side floor 2a and the arc-shaped side floor 2b adjacent to the arc-shaped side floor 2a, since the floor 2a has an arc-shaped side, depending on the different radian sizes of the arc-shaped side, it may cause the bottom surface 3121 of the first inclined pressure bar of the locking fastener 3 not to abut against the lower inclined surface 225a of the arc-shaped side floor 2a. Similarly, as shown in the attached Figure 23-10 figure, there is also no abutment between the bottom surface 3221 of the second inclined pressure bar of the third locking body locking fastener 3" and the lower inclined surface 225a of the arc-shaped side floor 2a. This will surely cause the locking fastener 3 and the third locking body locking fastener 3" to easily rotate in the direction of arrow A16. Therefore, according to the formula calculation, when the length of the locking fastener 3 is calculated to be the value of L27, the second side facades 3228 of the vertical bars along both sides in the length direction of the locking fastener 3 abut against two coordinate points 222as1 and 222as2 on the arc-shaped lower facade 222as of the arc-shaped side floor 2a. At the same time, the first side facades 3227 of the vertical bars of the third locking body locking fastener 3" abut against two coordinate points 222as1 and 222as2 on the arc-shaped lower facade 222as of the arc-shaped side floor 2a. Such abutment limiting measures make it not easy for the locking fastener 3 and the third locking body locking fastener 3" to rotate in the direction of arrow A16.

[0366] Another situation is as shown in the attached Figure 23-11 figure of the arc-shaped side floor 2a and the arc-shaped side floor 2b that are slightly S-shaped on the same floor. Therefore, it can be seen that one side of the arc-shaped side floor 2a and the arc-shaped side floor 2b has both an inward concave arc-shaped side and an outward convex arc-shaped side. As shown in the attached Figure 23-3 figure to Figure 23-10 figure, the methods and steps for calculating the values of L27, L28, L5a, and L5b of the first locking body 31 of the locking fastener 3 and the eleventh convex body 3321 of the third locking body locking fastener 3" on the side of the inward concave arc-shaped side floor 2a have been described in detail. The following further describes the methods and steps for calculating the values of L27, L28, L5a, and L5b when connecting the locking fastener 3 to the outward convex arc-shaped side floor 2b on one side of the R6 area as shown in the attached Figure 23-11 figure. When the outward convex arc-shaped side floor 2b is on the side of the first locking body 31 and the eleventh convex body 3321 of the third locking body locking fastener 3", that is, under the condition that the toggle lock bar 33 of the corresponding second locking body 32 is set on the side of the inward concave arc-shaped side floor 2a, the methods and steps for calculating the values of L27, L28, L5a, and L5b are as follows:

[0367] The first step is according to the formula The value of L27 can be calculated. Preferably, the value of L21 of the locking fastener 3 is set to be equal to the L23 of the third locking body locking fastener 3", and the value of L27 is equal to the value of L28.

[0368] As shown in the appendix Figure 23-12 First, the second side surface 3228 of the vertical bar of the locking fastener 3 is abutted against the lower surface 222b of the arc-shaped side floor 2b. According to the vertical direction extension line VPb3 of the seventh convex outer surface 3213, it intersects with the arc-shaped lower surface 222as of the arc-shaped side floor 2a to form two coordinate points, namely 222as3 and 222as4. The vertical distance between the horizontal direction extension line HP21 of the two coordinate points 222as3 and the horizontal direction extension line HP22 of the coordinate point 222as4 is the value of L27. As shown in the appendix Figure 23-12 The following formula can be obtained:

[0369] Furthermore, as shown in the appendix Figure 23-13 A point on the lower inclined surface 225a of the arc-shaped side floor 2a is set as the coordinate point 225as. The vertical distance between the horizontal direction extension line of the coordinate point 225as and the horizontal direction extension line of the bottom surface 224a of the lower tenon of the arc-shaped side floor 2a is L29. As shown in the appendix Figure 23-13 As shown in the appendix, the side edges of the same height L29 along the arc of the coordinate point 225as intersect with the horizontal direction extension line HP21 and the horizontal direction extension line HP22 to form two coordinate points, namely 225as1 and 225as2. And the two coordinate points 225as1 and 225as2 fall on the same vertical line VPb5. A point on the lower inclined surface 225a is set as the horizontal distance VPb5 between the vertical direction extension line VPb4 of the coordinate point 225as and the vertical direction extension line of the coordinate point 225as1, which is L30. As shown in the appendix Figure 23-13 It can be seen that the value of L30 is equal to the displacement value of the locking fastener 3, that is, L30 = L9 - L21; when the side of the straight floor 2 is locked and fixed with the locking fastener 3, that is, when the locking fastener 3 has no displacement, the bottom surface 3221 of the second inclined pressure bar of the locking fastener 3 abuts against the lower inclined surface 225 of the floor 2. Therefore, when the locking fastener 3 has a displacement, the vertical distance between the horizontal direction extension line of the coordinate point 3221as of the locking fastener 3 and the horizontal direction extension line of the upper surface of the second bottom plate 323 of the locking fastener 3 is set as L31. From this, it can be obtained that the value of L29 is equal to the value of L31. Therefore, when the length L27 of the locking fastener 3 is cut and used according to the formula The bottom surface 3221 of the second inclined pressure bar of the locking fastener 3 can abut against the lower inclined surface 225a of the arc-shaped side floor 2a.

[0370] Furthermore, as shown in the appendix Figure 23-14As shown, the outer surface 2232a5 of the lower groove is a dimension schematic of the original straight floor 2. It can be seen that the outer surface 2232a5 of the lower groove falls outside the inner surface 3241 of the first clamping strip of the locking fastener 3. Therefore, it is necessary to move the outer surface 2232a5 of the lower groove so that the outer surface 2232a5 of the lower groove abuts against the inner surface 3241 of the first clamping strip of the locking fastener 3. Calculate the horizontal distance L5a between the vertical extension line of the outer surface 2232a of the lower groove of the arc-shaped side floor 2a and the vertical extension line of the lower surface 222a of the arc-shaped side floor 2a, and the horizontal distance L5b between the vertical extension line of the outer surface 2232b of the lower groove of the arc-shaped side floor 2b adjacent to the arc-shaped side floor 2a and the vertical extension line of the lower surface 222b of the arc-shaped side floor 2b. As shown in the appendix Figure 23-14 As shown, set the center line VPa2 of the vertical extension line of the inner surface 3241 of the second clamping strip. The center line VPa2 intersects with the horizontal center line HP20 passing through the center of the circle to form a coordinate point 2232a3. From the appendix Figure 23-14 As shown, the formula for obtaining the value of L5a is: L5a = L5 - L9 - L21.

[0371] Furthermore, as shown in the appendix Figure 23-15 As shown, set the center line VPb2 of the vertical extension line of the inner surface 3431 of the first clamping strip of the third lock body locking fastener 3". The center line VPb2 intersects with the horizontal extension line HP21 and the horizontal extension line HP22 respectively to form two coordinate points 2232bs3 and 2232bs4. From the appendix Figure 23-15 As shown, the formula for obtaining the value of L5b is: L5b = L5.

[0372] As shown in the appendix Figure 23-13 As shown, when the locking fastener 3 and the arc-shaped side floor 2b are locked and fixed, the upper surface 3111 of the first tenon can abut against the bottom surface 211b of the upper convex body of the arc-shaped 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, and the locking fastener 3 and the arc-shaped side floor 2b are locked and fixed in the vertical direction.

[0373] As shown in the appendix Figure 23-13 As shown, the upper surface of the second bottom plate 323 of the locking fastener 3 abuts against the bottom surface 224a of the lower tenon of the arc-shaped side floor 2a, the bottom surface 3221 of the second inclined pressing strip of the locking fastener 3 abuts against the lower inclined surface 225a of the arc-shaped side floor 2a, the abutting surface 334 of the toggle lock bar 33 of the locking fastener 3 abuts against the bottom surface 211a of the upper convex body of the arc-shaped side floor 2a, and the inner surface 3241 of the second clamping strip of the locking fastener 3 abuts against the coordinate point 2232a3 of the outer surface 2232a of the lower groove of the arc-shaped side floor 2a, so that the locking fastener 3 and the arc-shaped side floor 2a are locked and fixed in the vertical direction.

[0374] As shown in the appendixFigure 23-14 As shown in the figure, when the third lock body locking part 3" and the locking part 3 are used in combination to jointly lock the adjacent arc side floor 2a and the arc side floor 2b, the first clamping strip 343 of the third lock body locking part 3" and the second clamping strip 324 of the locking part 3 are on the same side. And after the third lock body locking part 3" is locked and fixed with the arc side floor 2b, the upper surface 3323 of the eleventh rib of the third lock body locking part 3" abuts against the bottom surface 211b of the upper convex body of the arc side floor 2b, and the upper surface of the second bottom plate 323 of the third lock body locking part 3" abuts against the bottom surface 224b of the lower tenon of the arc side floor 2b. The inner vertical surface 3431 of the first clamping strip of the third lock body locking part 3" abuts against the coordinate point 2232a3 of the outer vertical surface 2232a of the lower groove of the arc side floor 2a. It should be noted here that the locking part 3 and the third lock body locking part 3" are arranged at intervals on the side of the arc side floor 2. The two side edges of the inner vertical surface 3241 of the second clamping strip of the third lock body locking part 3" abut against the two coordinate points 2232bs3 and 2232bs4 of the arc-shaped lower groove outer surface 2232bs of the arc side floor 2b, so that the third lock body locking part 3" is horizontally locked and fixed with the arc side floor 2a and the arc side floor 2b.

[0375] As shown in the appendix Figure 23-12 As shown in the figure, after the locking part 3 is locked and fixed with the arc side floor 2a and the arc side floor 2b adjacent to the arc side floor 2a, since the arc side floor 2b is an arc side, due to the different radian sizes of the arc side, it may cause the bottom surface 3121 of the first inclined pressure strip of the locking part 3 not to abut against the lower inclined surface 225b of the arc side floor 2b. Similarly, as shown in the appendix Figure 23-14 As shown in the figure, the bottom surface 3221 of the second inclined pressure strip of the third lock body locking part 3" also does not abut against the lower inclined surface 225b of the arc side floor 2b. In this way, it is usually easy to cause the locking part 3 and the third lock body locking part 3" to rotate in the direction of arrow A16. Therefore, according to the formula Calculated, when the length of the locking part 3 is L27 through calculation, the second side surfaces 3228 of the vertical strips on both sides of the length direction of the locking part 3 abut against the coordinate point 222b0 on the lower vertical surface 222b of the floor 2b. At the same time, the outer surface 3216 of the eighth convex body of the third lock body locking part 3" abuts against the two coordinate points 222as3 and 222as4 of the arc-shaped lower vertical surface 222as of the arc side floor 2a. Such abutment limiting measures make it not easy for the locking part 3 and the third lock body locking part 3" to rotate in the direction of arrow A16.

[0376] The fifth preferred embodiment of the present invention further describes the installation method and typical steps of the arc side floor 2.

[0377] First, cut the length of the locking fasteners 3 and the third-locking-body locking fasteners 3" according to the radian of the arc-shaped side floor 2.

[0378] In the second step, pre-hang the third-locking-body locking fasteners 3" with the arc-shaped 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 the appendix Figure 23-16 The figure shows a three-dimensional schematic diagram of the pre-hanging completion of the third-locking-body locking fasteners 3" with the arc-shaped side floor 2a.

[0379] In the third step, pre-hang the locking fasteners 3 with the arc-shaped side floor 2a. The locking fasteners 3 and the third-locking-body locking fasteners 3" are arranged at intervals on the side of the arc-shaped 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 the appendix Figure 23-17 The figure shows a three-dimensional schematic diagram of the pre-hanging completion of the locking fasteners 3 with the arc-shaped side floor 2a.

[0380] In the fourth step, the arc-shaped side floor 2b is shown to be locked and fixedly installed with the arc-shaped side floor 2a that has been pre-hung with the locking fasteners 3 and the third-locking-body locking fasteners 3". Specifically, refer to steps 4.3.1) to 4.3.8) of the fourth preferred embodiment of the present invention. As shown in the appendix Figure 23-18 The figure shows a three-dimensional schematic diagram of the installation steps of the locking fasteners 3 and the third-locking-body locking fasteners 3" with the arc-shaped side floor 2a and the arc-shaped side floor 2b.

[0381] The sixth preferred embodiment of the present invention:

[0382] One of the advantages of using the third-locking-body locking fasteners 3" of the present invention is that the sixth preferred embodiment can be preferably implemented. Since in this field, the floor 2 still uses keels or installs wooden floors on the boards. As shown in the appendix Figure 24-1 The figure shows that the floors 2a and 2b are laid on the keel 48. The third-locking-body locking fasteners 3" are pre-hung on one side of the floor 2a and then fixed to the keel 48 with screws. The keel 48 is usually made of synthetic materials such as wood and plastic steel and is fixed to the ground. The third-locking-body locking fasteners 3" are pre-hung on one side of the floor 2a and then fixed to the keel 48 with screws.

[0383] It should be noted that when implementing this sixth preferred embodiment. As shown in the appendix Figure 24-1 The figure shows that at the edge of the connection between the first strip 343 and the first bottom plate 342 of the third-locking-body locking fasteners 3", an extension plate 3425 is provided outward on the first bottom plate 342. The length of the extension plate 3425 is about 3 mm - 10 mm, with a length distance L61; As shown in the appendix Figure 14-1The horizontal width L3 at the notch of the lower groove 223a of the floor 2 shown can be set as follows: Generally, L3≥1.2mm is set, preferably 2.5mm≤L3≤5.5mm. In the sixth preferred embodiment of the present invention, the horizontal width L3 at the notch of the lower groove 223 is preferably greater than 4mm, and preferably 5mm≤L3≤9mm; such a design requirement enables the screw tail 68 of the screw 67 fixing the third lock body fastener 3" to fall within the lower groove 223 of the floor 2, so that the upper surface of the first bottom plate 342 with the third lock body fastener 3" can be closely attached to the bottom surface 224b of the lower tenon of the floor 2b, as shown in the appendix Figure 24-1 shown.

[0384] The following is a further description of the implementation steps and methods of the sixth preferred embodiment of the present invention. First, lay the keel 48 on the ground according to the length of the floor 2. Generally, as shown in the appendix Figure 24-2 shown, the spacing distance L41 of the keel 48 is set in the range of: 200mm≤L41≤400mm, and the upper surface of the keel 48 is made basically flat. Generally, the keel 48 is fixed to the ground with nails or expansion screws.

[0385] In the second step, pre-hang the third lock body fastener 3" according to the spacing L41 between the keels, so that the third lock body fastener 3" just falls on the keel, and fasten the third lock body fastener 3" to the keel 48 with screws, as shown in the appendix Figure 24-3 shown, where the pre-hanging of the third lock body fastener 3" and the floor 2 refers to steps 3.1.1) to 3.1.4) of the third preferred embodiment of the present invention.

[0386] In the third step, pre-hang the fastener 3 at the vacant position between the third lock body fasteners 3" on the floor 2a that has been laid on the keel, as shown in the appendix Figure 24-4 shown. The method of pre-hanging the fastener 3 into the floor 2a refers to steps 3.2.1) to 3.2.3) of the third preferred embodiment of the utility model.

[0387] It should be further noted here that since the present invention can be implemented for vertical locking and fixing between adjacent floors 2, as shown in the appendix Figure 14-11 shown, the floors 2a and 2c have been fixed to the ground, and the floor 2b can be vertically installed between the floors 2a and 2c. Therefore, as shown in the appendix Figure 24-5As shown, the floor 2a can be fixed on the joist 48, and the floor 2c is fixed on the joist at an interval equal to the width of the spaced floor 2b. Then, the floor 2b is locked and fixed. The advantage of such installation is that when there are electric wires and cables under the joist and subsequent adjustments are needed, the floor 2b can be lifted with a suction cup without damaging the floors 2a and 2c, and the locking and fixing can be re-implemented. Therefore, in the case of installing sockets or other facilities on the floor 2 or having electric wire and cable facilities between the joists 48 under the floor 2, the floors 2a and 2c can be fixed on the joist at intervals with the third lock body locking fastener 3", and then the floor 2b is installed.

[0388] The fourth step is to vertically lock and engage the pre-hung floor 2b with the third lock body locking fastener 3" downward to the adjacent floor 2a, as shown in the appendix Figure 24-5 ; or vertically lock and engage the pre-hung floor 2b with the third lock body locking fastener 3" downward to the adjacent floors 2a and 2c simultaneously, as shown in the appendix Figure 24-6 shown.

[0389] As shown in the appendix Figure 24-7 Shown is a schematic cross-sectional view of the locking and fixing of the locking fastener 3 and the third lock body locking fastener 3" used in combination to vertically lock and fix the floor 2b between the adjacent floors 2a and 2c.

[0390] The seventh preferred embodiment of the present utility model.

[0391] One of the advantages of using the third lock body locking fastener 3" in the present utility model is that the seventh preferred embodiment can be preferably implemented. Since it has become a trend to use the floor as a wall panel to be mounted on the wall in the art, as shown in the appendix Figure 25-1 shown, the floor 2 is the wall panel 2". The third lock body locking fastener 3" is pre-hung on one side of the wall panel 2", and then fixed to the joist with screws. The joist is usually a wooden joist and a light steel joist 65 fixed to the wall 66.

[0392] Similar to the sixth preferred embodiment of the present utility model, it should be noted that when implementing the seventh preferred embodiment, as shown in the appendix Figure 25-1 shown, at the connection between the first strip 343 and the first bottom plate 342 of the third lock body locking fastener 3", an extension plate 3425 is provided outward at the edge of the first bottom plate 342. The length of the extension plate 3425 is about 3 mm - 5 mm; as shown in the appendix Figure 14-1As shown, the horizontal width L3 at the notch of the lower groove 223a under the floor 2 can be set as follows: Usually, L3 ≥ 1.2 mm is set, preferably 2.5 mm ≤ L3 ≤ 5.5 mm. In this seventh preferred embodiment, for the horizontal width L3 at the notch of the lower groove 223", preferably, the value of L3 is greater than 4 mm, and preferably 5 mm ≤ L3 ≤ 9 mm; such a design requirement enables the screw tail 68 of the screw 67 fixing the third lock body fastener 3" to fall within the lower groove 223" of the wall panel 2", so that the upper surface of the second bottom plate 323 with the third lock body fastener 3" can be closely attached to the bottom surface 224" of the lower tenon of the wall panel 2", as shown in the appendix Figure 25-1 as shown.

[0393] Another situation is as shown in the appendix Figure 25-2 As shown, the floor 2 is arranged on the wall as a wall panel. Usually, a decorative strip 49 with a decorative effect is provided between two wall panels 2". The seventh preferred embodiment of the present utility model provides a fastener 3 for a non-paddle lock strip 33, and the fastener 3 for the non-paddle lock strip 33 is set as a non-paddle lock strip fastener 3.

[0394] The seventh preferred embodiment of the present utility model provides a decorative strip 49 that is used in conjunction with the floor 2 used as a wall panel 2", as shown in the appendix Figure 25-3 As shown, a molding strip 491 is provided at the upper end of the upper vertical surface 212 of the decorative strip 49. The molding strip 491 covers the upper surface of the adjacent wall panel 2", making the wall panel 2" more aesthetically pleasing visually. There are various styles of the molding strip. The seventh preferred embodiment of the present utility model is shown in the appendix Figure 25-3 as one of them.

[0395] As shown in the appendix Figure 25-4 as shown and as shown in the appendix Figure 25-5 As shown, a third lock body fastener 3"a and a third lock body fastener 3"b are respectively and fixedly spaced on the sides of the wall panel 2"a and the w...

Claims

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

2. A floor fixing assembly according to claim 1, characterized in that: The first lock body (31) of the locking member (3) comprises a first tenon (311), a first oblique pressure strip (312) and a limit lock head (313), and the second lock body (32) comprises a vertical strip (321), a second oblique pressure strip (322), a second bottom plate (323) and a second clamping strip (324).

3. A floor fixing assembly according to claim 2, characterized in that: The lower edge of the vertical strip (321) of the locking member (3) placed vertically is connected to the edge of one side of the second bottom plate (323) placed horizontally in an L shape, the second clamping strip (324) is connected to the upper surface of the other side edge of the second bottom plate (323), the second oblique pressure strip (322) is placed obliquely, the bottom surface of the second oblique pressure strip (322) is set as the bottom surface (3221) of the second oblique pressure strip, the upper edge of the vertical strip (321) is connected to the lower edge of the second oblique pressure strip (322), and with the vertical strip (321) as a reference, in the horizontal direction and / or position, the second oblique pressure strip (322) and the second bottom plate (323) are on the same side; The first oblique pressure strip (312) is a strip-shaped body placed obliquely, the bottom surface of the first oblique pressure strip (312) is set 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 V shape, the first oblique pressure strip (312), the second oblique pressure strip (322) and the vertical strip (321) are connected together in a Y shape, the upper surface of the first tenon (311) is set as the first tenon upper surface (3111), the bottom surface of the first tenon (311) is set as the first tenon bottom surface (3112), one side surface of the first tenon (311) is set as the first tenon inner side surface (3113), the side surface opposite to the first tenon inner side surface (3113) is set as the first tenon outer side surface (3114), the first tenon inner side surface (3115) is set as the first tenon outer side surface (3116), the first tenon inner side surface (3117) is set as the first tenon outer side surface (3118), the first tenon inner side surface (3119) is set as the first tenon inner side surface (3111) and the first tenon inner side surface (3114) is set as the first tenon outer side surface (3119). The bottom side edge of the surface (3113) is connected to the upper edge of the first oblique pressure strip (312); the bottom surface (3121) of the first oblique pressure strip, the bottom surface (3221) of the second oblique pressure strip and the bottom surface (3112) of the first tenon are all clamping surfaces; the paddle lock strip (33) is an obliquely placed strip-shaped body, the lower edge of the paddle lock strip (33) is connected to the upper edge of the second oblique pressure strip (322) in a V shape, the paddle lock strip (33) and the second oblique pressure strip (322) are connected in a V shape to form an obtuse angle, and the angle (A1) formed by the V-shaped connection between the paddle lock strip (33) and the second oblique pressure strip (322) is toward the first tenon (311); the second oblique pressure strip (322), the vertical strip (321), the second bottom plate (323) and the second clamping strip (324) are connected to each other to form a groove set as the second groove (325).

4. A floor fixing assembly according to claim 3, characterized in that: A convex strip (314) is connected between one side edge of the bottom surface (3112) of the first tenon and the lower end side edge of the outer side surface (3114) of the first tenon to form a convex strip, which is set as a rotating convex strip (314); and a convex strip (315) is connected between the side edge of the upper surface (3111) of the first tenon and the upper side edge of the inner side surface (3113) of the first tenon to form a convex strip.

5. A floor fixing assembly according to claim 3, characterized in that: The second clip strip (324) includes a second clip strip inner surface (3241), a second clip strip upper surface (3242) and a second clip strip outer surface (3243) which are sequentially arranged in the horizontal direction and / or position, the second clip strip inner surface (3241) faces the vertical strip (321), the lower side edge of the second clip strip inner surface (3241) is connected to the upper surface of the second bottom plate (323), the upper side edge of the second clip strip inner surface (3241) is connected to one side edge of the second clip strip upper surface (3242), the other side edge of the second clip strip upper surface (3242) is connected to the upper side edge of the second clip strip outer surface (3243), the lower side edge of the second clip strip outer surface (3243) is connected to the upper surface edge of the second bottom plate (323), and the second clip strip inner surface (3241) is a clipping surface.

6. A floor fixing assembly according to claim 5, characterized in that: The paddle lock bar (33) is a strip-shaped body placed obliquely, the surface of the paddle lock bar (33) facing the first lock body (31) is set as the paddle lock bar upper surface (331), the other side surface of the paddle lock bar (33) relative to the paddle lock bar upper surface (331) is set as the paddle lock bar bottom surface (332), and the upper end side surface of the paddle lock bar (33) is set as the paddle lock bar upper guide surface (333), and the paddle lock bar upper guide surface (333) is an arcuate surface.

7. A floor fixing assembly according to claim 6, characterized in that: An inclined surface 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, which is set as a paddle lock bar abutment surface (334); the paddle lock bar abutment surface (334) is a clamping surface; and an inclined surface 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, which is set as a paddle lock bar lower guide surface (335).

8. A floor fixing assembly according to claim 6, characterized in that: The bottom surface (332) of the paddle lock strip is connected to the bottom surface (3221) of the second oblique pressure strip to form an inclined surface set 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 strip to form a convex strip set as the ninth convex strip (337); the lower edge of the third guide surface (336) is connected to the upper edge of the bottom surface (3221) of the second oblique pressure strip to form a convex strip set as the tenth convex strip (338).

9. A floor fixing assembly according to claim 7, characterized in that: The limit lock head (313) comprises a first abutting surface (3131), an inner convex strip (3135) of the limit lock head and an upper surface (3132) of the limit lock head, wherein the first abutting surface (3131) and the upper surface (3132) of the limit lock head are both clamping surfaces.

10. A floor fixing assembly according to claim 9, characterized in that: The limiting lock head (313) protrudes from the upper surface (3111) of the first tenon. In the horizontal direction and / or position, the lower edge of the first abutting surface (3131) is connected to the upper surface (3111) of the first tenon. The upper edge of the first abutting surface (3131) is connected to one side of the upper surface (3132) of the limiting lock head to form a convex strip as the inner convex strip (3135) of the limiting lock head. The other side of the upper surface (3132) of the limiting lock head extends downward and inward in an arc shape and is connected to the upper edge of the outer side surface (3114) of the first tenon. The limiting lock head (313) partially protrudes from the outer side surface (3114) of the first tenon.

11. A floor fixing assembly according to claim 1, characterized in that: The outer edge of the bottom surface (211) of the upper convex body is connected to the lower edge of the upper vertical surface (212) to form an inclined surface set as the upper inclined surface (213); the outer edge of the upper surface (221) of the lower tenon is connected to the upper edge of the lower vertical surface (222) to form an inclined surface set 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 tenon to form a convex strip set as the fourth convex strip (226); the lower inclined surface (225) is connected to the lower vertical surface (222) to form a convex strip set as the sixth convex strip (2251); the bottom surface (224) of the lower tenon is connected to the lower vertical surface (222) to form an inclined surface set as the lower tenon bottom inclined surface (2249).

12. A floor fixing assembly according to claim 1, characterized in that: The bottom side wall (201) of the first groove is provided with an elastic adjustment groove (204) horizontally inwardly.

13. A floor fixing assembly according to claim 9, characterized in that: The upper groove (202) comprises a third abutting surface (2021), a fourth abutting surface (2022), an upper groove upper surface (2023), an upper groove outer convex strip (2024) and an upper groove inner convex strip (2025).

14. A floor fixing assembly according to claim 13, characterized in that: The third abutment surface (2021) extends upward and intersects with the upward extension surface of the fourth abutment surface (2022), and a straight line is formed at the intersection. The upper surface (2023) of the upper groove can be a plane and / or an arcuate surface, and the upper surface (2023) of the upper groove can be parallel to the front of the floor (2); the lower side edge of the third abutment surface (2021) is connected to the edge of the bottom surface (211) of the upper convex body to form a convex strip, which is the outer convex strip (2024) of the upper groove; the upper side 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 side edge of the fourth abutment surface (2022); the lower side edge of the fourth abutment surface (2022) is connected to the edge of the bottom surface (211) of the upper convex body to form a convex strip, which is the inner convex strip (2025) of the upper groove.

15. A floor fixing assembly according to claim 1, characterized in that: With the opening of the upper groove (202) as a reference, in the horizontal direction and / or position, the portion of the upper convex body bottom surface (211) between the upper groove (202) and the lower side edge of the upper inclined surface (213) is set as the upper convex outer bottom surface (2112); and the portion 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 inner bottom surface (2113).

16. A floor fixing assembly according to claim 13, characterized in that: The lower groove (223) is provided with a lower groove guide surface (2231), a lower groove outer surface (2232), a lower groove inner inclined surface (2235), a lower groove upper surface (2233) and a lower groove inner surface (2234) in sequence from one side of the lower vertical surface (222) to the first groove bottom side wall (201) in the horizontal direction and / or position.

17. A floor fixing assembly according to claim 16, characterized in that: The bottom surface (224) of the lower tenon is connected to the lower side edge of the lower groove outer surface (2232) to form an inclined surface as the lower groove guide surface (2231); the upper side edge of the lower groove outer surface (2232) is connected to one side edge of the lower groove upper surface (2233) to form an inclined surface as the lower groove inner inclined surface (2235); the other side edge of the lower groove upper surface (2233) is connected to the upper end side edge of the lower groove inner surface (2234), and the lower side edge of the lower groove inner surface (2234) is connected to the side edge of the bottom surface (224) of the lower tenon.

18. A floor fixing assembly according to claim 1, characterized in that: The floor (2) also includes the locking member (3).

19. A floor fixing assembly according to claim 9, characterized in that: At least one locking member (3) is connected to at least one side of the floor (2), and the locking member (3) is not present on the other side of the floor on which the locking member (3) is already provided; the first lock body (31) of the locking member (3) is arranged in the first groove (20) of the floor (2), the inner convex strip (3135) of the limiting lock head of the locking member (3) abuts against the inner bottom surface (2113) of the upper convex body, the upper surface (331) of the paddle lock strip abuts against the upper vertical surface (212), and the second bottom plate (323) and the second clamping strip (324) of the second lock body (32) and the paddle lock strip (33) all protrude from the outer side of the upper vertical surface (212) of the floor (2).

20. A floor fixing assembly according to claim 9, characterized in that: The limit lock head (313) further comprises a second abutting surface (3133), wherein the second abutting surface (3133) is a locking surface, and the second abutting surface (3133) faces the outside of the first lock body (31).

21. A floor fixing assembly according to claim 20, characterized in that: The limiting lock head (313) protrudes from the upper surface (3111) of the first tenon between the outer side surface (3114) of the first tenon and the inner side surface (3113) of the first tenon; the upper side edge of the second abutting surface (3133) is connected to the edge of one side of the upper surface (3132) of the limiting lock head; the lower side edge of the second abutting surface (3133) is concave toward the limiting lock head (313) and connected to the upper side edge of the outer side surface (3114) of the first tenon to form an arc-shaped groove as the limiting lock head groove (3134); the second abutting surface (3133) extends upward and intersects with the upward extension surface of the first abutting surface (3131), and the intersection is a straight line.

22. A floor fixing assembly according to claim 9, characterized in that: The first lock body (31) also includes a third convex strip (3115).

23. A floor fixing assembly according to claim 22, characterized in that: The lower end side edge of the first abutting surface (3131) is connected to the upper end side edge of the inner side surface (3113) of the first tenon to form a convex strip, which is the third convex strip (3115).

24. A floor fixing assembly according to claim 16, characterized in that: The upper groove (202) further comprises a third groove (205), wherein the third groove (205) is a groove with an opening obliquely facing the notch of the first groove (20), and in horizontal direction and / or position, the third groove (205) is arranged between the upper groove (202) and the bottom side wall (201) of the first groove.

25. A floor fixing assembly according to claim 24, characterized in that: The third groove (205) comprises a third groove abutting surface (2051), a third groove bottom surface (2052) and a third groove inclined surface (2053).

26. A floor fixing assembly according to claim 25, characterized in that: The third groove abutting surface (2051) is an inclined surface, and the third groove abutting surface (2051) is inclined downward toward the outer side of the notch of the first groove (20).

27. A floor fixing assembly according to claim 1, characterized in that: The upper groove (202) further comprises an upper bottom cut surface (207) and a first convex strip (206).

28. A floor fixing assembly according to claim 25, characterized in that: The lower side edge of the fourth abutting surface (2022) is connected to the lower side edge of the third groove abutting surface (2051) to form a plane as an upper bottom cut surface (207); the third groove abutting surface (2051) is connected to the upper bottom cut surface (207) to form a convex strip as a pre-hanging limit convex strip (2055); one side edge of the upper bottom cut surface (207) is connected to the lower side edge of the fourth abutting surface (2022) to form a convex strip set as a first convex strip (206); the third groove inclined surface (2053) is connected to the edge of the upper convex body bottom surface (211) to form a convex strip set as a third groove inner convex strip (2054).

29. A floor fixing assembly according to claim 25, characterized in that: The two opposite side surfaces of the vertical strip (321) of the locking member (3) are respectively provided with a first vertical strip side surface (3227) and a second vertical strip side surface (3228), and the first vertical strip side surface (3227) faces the second locking strip (324).

30. A floor fixing assembly according to claim 29, characterized in that: A seventh protrusion (3211) is provided at the upper end of the first side elevation (3227) of the vertical bar of the locking member (3), and an eighth protrusion (3212) is provided at the second side elevation (3228) of the vertical bar.

31. A floor fixing assembly according to claim 30, characterized in that: The seventh protrusion (3211) is provided with at least a seventh protrusion outer facade (3213), a seventh protrusion lower convex strip (3215) and a seventh protrusion lower surface (3217) in sequence from top to bottom in the vertical direction, and the eighth protrusion (3212) is provided with at least an eighth protrusion upper convex strip (3214) and an eighth protrusion outer facade (3216) in sequence from top to bottom in the vertical direction.

32. A floor fixing assembly according to claim 31, characterized in that: The outer facade of the seventh protrusion (3213) is parallel to the outer facade of the eighth protrusion (3216), and the distance D6 between the upper edge of the lower convex strip (3215) of the seventh protrusion and the lower edge of the upper convex strip (3214) of the eighth protrusion is ≥ the vertical distance L13 between the outer facade of the seventh protrusion (3213) and the outer facade of the eighth protrusion (3216).

33. A floor fixing assembly according to claim 31, characterized in that: The second groove (325) also includes a second groove inner cavity (3251).

34. A floor fixing assembly according to claim 33, characterized in that: The inner cavity (3251) of the second groove is in the space of the projection area of ​​the upper surface of the second bottom plate (323) vertically projected downwardly from the lower surface (3217) of the seventh convex body, and the inner cavity (3251) of the second groove is in the second groove (325).

35. A floor fixing assembly according to claim 34, characterized in that: When the second bottom plate (323) is placed horizontally, with the vertical center line between the seventh convex outer facade (3213) and the eighth convex outer facade (3216) as the center line, when the side of the floor (2) is a straight line, the bottom surface of the first oblique pressure strip (3121) and the bottom surface of the second oblique pressure strip (3221) are arranged on the locking member (3) in a mirror-image relationship; when the side of the floor (2) is an arc-shaped side, the bottom surface of the first oblique pressure strip (3121) and the bottom surface of the second oblique pressure strip (3221) are arranged on the locking member (3) in a non-mirror-image relationship, and the bottom surface of the first oblique pressure strip (3121) is higher than the bottom surface of the second oblique pressure strip (3221) in the vertical direction and / or position.

36. A floor fixing assembly according to claim 1, characterized in that: The lower tenon (22) further comprises a third inclined surface (227), a third inclined surface upper convex strip (228) and a third inclined surface lower convex strip (229).

37. A floor fixing assembly according to claim 36, characterized in that: The lower inclined surface (225) and the lower vertical surface (222) are connected to form an inclined surface, which is the third inclined surface (227); the upper edge of the third inclined surface (227) is connected to the lower edge of the lower inclined surface (225) to form a convex strip, which is the third inclined surface upper convex strip (228); the lower edge of the third inclined surface (227) is connected to the upper edge of the lower vertical surface (222) to form a convex strip, which is the third inclined surface lower convex strip (229).

38. A floor fixing assembly according to claim 30, characterized in that: The third lock body (34) replaces the first lock body (31) of the locking member (3), and the locking member with the third lock body (34) but without the first lock body (31) is configured as a locking member (3") with the third lock body.

39. A floor fixing assembly according to claim 38, characterized in that: The third lock body (34) comprises a first bottom plate (342) and a first locking strip (343).

40. A floor fixing assembly according to claim 39, characterized in that: The first bottom plate (342) is placed horizontally, and one side edge of the first bottom plate (342) is connected to the outer edge of the connection between the vertical bar (321) and the second bottom plate (323). With the vertical bar (321) as a reference, in the horizontal direction and / or position, the first bottom plate (342) is on one side of the first tenon (311), and the first clamping bar (343) is connected to the other side edge of the upper surface of the first bottom plate (342).

41. A floor fixing assembly according to claim 40, characterized in that: The upper surface of the first bottom plate (342) and the upper surface of the second bottom plate (323) are on the same plane, 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) and the bottom surface of the second bottom plate (323) are on the same plane.

42. A floor fixing assembly according to claim 41, characterized in that: In the horizontal direction and / or position, the first clip strip (343) is sequentially provided with a first clip strip inner facade (3431), a first clip strip upper inclined surface (3432), a first clip strip upper surface (3433) and a first clip strip outer surface (3434).

43. A floor fixing assembly according to claim 42, characterized in that: In the horizontal direction, the inner vertical surface (3431) of the first clip strip faces the direction of the vertical strip (321), the lower end side edge of the inner vertical surface (3431) of the first clip strip is connected to the upper surface of the first bottom plate (342), the upper side edge of the inner vertical surface (3431) of the first clip strip is connected to the side edge of the upper surface (3433) of the first clip strip to form an inclined surface as the upper inclined surface (3432) of the first clip strip, the other side edge of the upper surface (3433) of the first clip strip is connected to the upper side edge of the outer surface (3434) of the first clip strip, and the lower side edge of the outer surface (3434) of the first clip strip is connected to the outer side edge of the upper surface of the first bottom plate (342).

44. A floor fixing assembly according to claim 25, characterized in that: The floor (2) further comprises the locking member (3); the first abutting surface (3131) of the limiting lock head (313) of the locking member (3) abuts against the third groove abutting surface (2051), and the upper surface (331) of the paddle lock strip abuts against the upper vertical surface (212) of the floor (2); the second bottom plate (323) and the second clamping strip (324) of the locking member (3) protrude outside the upper vertical surface (212) of the floor (2); at least one of the locking members (3) is arranged on at least one side surface of the floor (2), and the locking member (3) is absent on the side surface of the floor (2) on which the locking member (3) is arranged relative to the other side.

45. A floor fixing assembly according to claim 39, characterized in that: The floor (2) also includes the third lock body lock component (3"); the paddle lock strip abutting surface (334) of the third lock body lock component (3") abuts against the third abutting surface (2021), the inner facade (3241) of the second clamping strip of the third lock body lock component (3") abuts against the outer facade (2232) of the lower groove, the bottom surface (3221) of the second inclined pressure strip of the third lock body lock component (3") abuts against the lower inclined surface (225), the bottom surface (224) of the lower convex tenon abuts 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 lock component (3") protrude from the outside of the lower facade (222) of the floor (2).

46. ​​A floor fixing assembly according to claim 39, characterized in that: The floor (2) further comprises the locking member (3) and the locking member (3") having a third lock body; at least one of the locking member (3) and the locking member (3") having a third lock body is arranged on the same side of the floor (2); and the locking member (3) and the locking member (3") having a third lock body are not arranged on the other side of the side of the floor (2) where the locking member (3) and the locking member (3") having a third lock body are arranged; the first abutting surface (3131) of the limiting lock head (313) of the locking member (3) abuts against the abutting surface (2051) of the third groove, the upper surface (331) of the paddle lock strip abuts against the upper vertical surface (212) of the floor (2), and the second bottom plate (323) and the locking member (3) of the locking member (3) are arranged on the upper vertical surface (212) of the floor (2); The second clamping strip (324) protrudes from the outer side of the upper vertical surface (212) of the floor (2); the abutting surface (334) of the paddle lock strip with the third lock body lock member (3") abuts against the third abutting surface (2021), the inner vertical surface (3241) of the second clamping strip with the third lock body lock member (3") abuts against the outer vertical surface (2232) of the lower groove, the bottom surface (3221) of the second inclined pressure strip with the third lock body lock member (3") abuts against the lower inclined surface (225), the bottom surface (224) of the lower convex tenon abuts against the upper surface of the second bottom plate (323), and the first bottom plate (342) with the third lock body lock member (3") and the first clamping strip (343) protrude from the outer side of the lower vertical surface (222) of the floor (2).

47. A floor fixing assembly according to claim 30, characterized in that: The locking component (3) does not have the limiting lock head (313), and the locking component (3) without the limiting lock head (313) is configured as a locking component (3) without a lock head.

48. A floor fixing assembly according to claim 3, characterized in that: The upper side edge of the inner side surface (3113) of the first tenon is connected to the side edge of the upper surface (3111) of the first tenon to form an inclined surface set as the sixth abutment surface (351), the upper side edge of the sixth abutment surface (351) is connected to the upper surface (3111) of the first tenon to form a convex strip set as the fifth convex strip (352), and the upper surface (3111) of the first tenon is a clamping surface.

49. A floor fixing assembly according to claim 47, characterized in that: When the second bottom plate (323) of the headless locking fastener (3) is in a horizontal state, the upper surface (3111) of the first tenon of the headless locking fastener (3) is flush with the surface of the paddle lock bar abutment surface (334) in the horizontal direction, and the paddle lock bar abutment surface (334) can be a plane, and the paddle lock bar abutment surface (334) is parallel to the upper surface of the second bottom plate (323).

50. A floor fixing assembly according to claim 38, characterized in that: The floor (2) does not have the upper groove (202), and the floor (2) without the upper groove (202) is set as a floor (2) without an upper groove.

51. A floor fixing assembly according to claim 50, characterized in that: The third lock body lock member (3") further comprises an eleventh protrusion (3321), and the eleventh protrusion (3321) further comprises an eleventh protrusion upper surface (3323), and the eleventh protrusion upper surface is a locking surface.

52. A floor fixing assembly according to claim 51, characterized in that: The value of the angle (A1) formed by the connection between the upper surface of the second oblique pressure strip (322) with the third lock body lock piece (3") and the upper surface (331) of the paddle lock strip toward the first lock body (31) is set to 35°≤A1≤180°, the paddle lock strip abutting surface (334) with the third lock body lock piece (3") overlaps with the upper surface (3323) of the eleventh convex body, the upper surface (3323) of the eleventh convex body includes the paddle lock strip abutting surface (334), and the upper surface (3323) of the eleventh convex body is parallel to the upper surface of the second bottom plate (323).

53. A floor fixing assembly according to claim 51, characterized in that: The upper surface (3323) of the eleventh protrusion is parallel to the upper surface of the second bottom plate (323), and the vertical distance (V8) between the horizontal extension line of the upper surface (3323) of the eleventh protrusion 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 bottom surface of the lower tenon (224) and the horizontal extension line of the bottom surface (211) of the upper protrusion.

54. A floor fixing assembly according to claim 51, characterized in that: The floor without upper groove (2) also includes the third lock body locking component (3"), which is fixed at a certain distance on one of the side edges of two adjacent side surfaces of the floor without upper groove (2), and the side of the floor without upper groove (2) with the third lock body locking component (3") is not provided with the third lock body locking component (3") on the other side surface.

55. A floor fixing assembly according to claim 13, characterized in that: The upper surface (2023) of the upper groove may be an inclined surface, and the upper surface (2023) of the upper groove extends upward to intersect with the upward extending surface of the fourth abutting surface (2022), and the intersection is a straight line.

56. A floor fixing assembly according to claim 49, characterized in that: The first side elevation (3227) of the vertical bar of the lock-less locking component (3) is provided with the seventh protrusion (3211), and the second side elevation (3228) of the vertical bar is not provided with the eighth protrusion (3212).

57. A floor fixing assembly according to claim 38, characterized in that: The first side elevation (3227) of the vertical bar with the third lock body lock member (3") does not have the seventh protrusion (3211), and the eighth protrusion (3212) is provided on one side of the second side elevation (3228) of the vertical bar.

58. A floor fixing assembly according to claim 1, characterized in that: The locking component (3) does not have the paddle lock strip (33), and the locking component (3) without the paddle lock strip (33) is set as a locking component (3) without a paddle lock strip.

59. A floor fixing assembly according to claim 50, characterized in that: The side edges of the floor (2) without upper grooves are arc-shaped side edges, and the floor (2) without upper grooves with arc-shaped side edges is set as an arc-shaped side edge floor (2).

60. A floor fixing assembly according to claim 59, characterized in that: When the curved side floor (2) forms a cross section along the center section, the horizontal distance between the vertical extension line of the upper facade (212) and the vertical extension line of the lower groove outer facade (2232) is L5, and the L5 values ​​of adjacent curved side floors (2) may be different.

61. A floor fixing assembly according to claim 38, characterized in that: The U-shaped body with a rack (70) replaces the vertical bar (321), and the locking member (3) having the U-shaped body with a rack (70) and without the vertical bar (321) is configured as a locking member (3) with a U-shaped rack, and the locking member (3) with a U-shaped rack comprises a U-shaped groove (702) and a toothed convex bar (701).

62. A floor fixing assembly according to claim 61, characterized in that: The U-shaped rack locking component (3) further comprises the seventh protrusion (3211) and the eighth protrusion (3212).

63. A floor fixing assembly according to claim 61, characterized in that: The floor (2) also includes the U-shaped rack locking member (3).

64. A floor fixing assembly according to claim 61, characterized in that: The floor (2) further comprises a buckle strip (80) and an elastic clip (90), wherein a strip buckle strip (801) is arranged at the upper end of the buckle strip (80), and a lower rack (802) is arranged at the center position of the lower end of the strip buckle strip (801); an upper toothed slot (901) opening upward is arranged at the vertical center of the upper end of the elastic clip (90); a lower toothed convex strip (902) is arranged at the vertical center line position of the lower end of the elastic clip (90), and elastic clip oblique abutment surfaces (902) are symmetrically arranged on both sides of the upper end of the lower toothed convex strip (902) 903); the lower toothed protrusion (902) of the elastic clip (90) can be embedded in the U-shaped groove (702) of the U-shaped rack locking component (3), and the lower rack (802) of the buckle strip (80) can be embedded in the upper toothed groove (901) of the elastic clip (90); the oblique abutment surfaces (903) of the elastic clip on both sides can respectively abut against the upper surface of the first oblique pressure strip (312) and the upper surface of the second oblique pressure strip (322) of the U-shaped rack locking component (3).

65. A floor fixing assembly according to claim 61, characterized in that: The U-shaped body with a rack (70) replaces the vertical bar (321) of the third lock body locking member (3"), and the third lock body locking member (3") with the U-shaped body with a rack (70) but without the vertical bar (321) is configured as a third lock body locking member with a U-shaped rack, and the third lock body locking member with a U-shaped rack includes the seventh protrusion (3211), the eighth protrusion (3212), the U-shaped groove (702) and the toothed protrusion (701).

66. A floor fixing assembly according to claim 7, characterized in that: The paddle lock bar abutting surface (334) of the locking member (3) is connected to the paddle lock bar upper surface (331) to form a step that is concave inwardly toward the paddle lock bar bottom surface (332) and is set as a paddle lock bar supporting step (3341); and the upward inclined surface connected to the paddle lock bar supporting step (3341) is the paddle lock bar abutting surface (334).

67. A floor fixing assembly according to claim 3, characterized in that: The first tenon upper surface (3111) of the locking element extends outward and protrudes from the outer side surface (3114) of the first tenon, and the first tenon upper surface (3111) extending outward and protruding is an inclined surface. In the vertical direction, the first tenon upper surface (3111) is closer to the outer side surface (3114) of the first tenon and is higher than the first tenon upper surface (3111) and the connection part close to the limit lock head (313).

68. A floor fixing assembly according to claim 2 or 3, characterized in that: The outer side surface (3114) of the first tenon is provided with a first weight-reducing groove (361), and the first weight-reducing groove (361) is trumpet-shaped. A second weight-reducing groove (362) is provided at the upper end of the connection between the first oblique pressure strip (312) and the inner side surface (3113) of the first tenon.

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