A wooden board splicing structure, splicing board and splicing method

Abstract

The present invention discloses a wooden board splicing structure, a splicing board and a splicing method. The splicing structure comprises a first wooden board A and a second wooden board B. The first wooden board A is provided with two or more mortises and tenons on at least one end, and the second wooden board B is provided with two or more tenons and tenons that match the mortises and tenons on the first wooden board A on at least one end. In the splicing structure in which the first wooden board A and the second wooden board B are butt-jointed and assembled, at least one tenon on the first wooden board A and / or the second wooden board B is installed in the corresponding tenon in an overall bent or twisted state. The overall bending or twisting of the tenon is formed by the unbalanced interference fit between the tenon and the tenon, the unequal spacing between multiple tenons and the corresponding tenon, or the deflection structure provided in the tenon to force the corresponding tenon after installation. The tenon is twisted or bent as a whole to form a strong and lasting bending tension, so that the spliced ​​wooden board is more firm and durable.

Description

Technical Field

[0001] The invention relates to the technical field of wooden board splicing, in particular to a wooden board splicing method, a splicing structure and a splicing board, and belongs to the technical field of mortise and tenon jointing of wooden boards. Background Art

[0002] Chinese patent application CN102700355A discloses a spliced ​​wooden board (hereinafter referred to as "prior art 1"), including a wooden board, a protrusion, a groove, and an adhesive. The wooden board is provided with a protrusion and a groove, and several wooden boards are connected and fixed by embedding the protrusion in the groove, and the protrusion and the groove are connected by adhesive. The protrusion and the groove are trapezoidal. The invention inserts the protrusion into the groove and adheres it with an adhesive. The adhesive has extremely strong adhesion and a firm structure after adhesion. The waste wooden boards generated in the process of making picture frames and picture boxes are made into a spliced ​​board, which is used again to make picture frames and picture boxes, so as to realize the recycling of waste products, save resources, and improve the utilization rate. However, the docking direction of the protrusion and the groove is basically parallel to the board surface of the wooden board, and the tensile resistance is poor, so it needs to be fixed by an adhesive without loosening, and the tensile and tearing resistance can be increased. The adhesive not only increases the cost and process, but also may bring new environmental problems. There is also a problem whether the effective life of the adhesive can be as long as that of wood.

[0003] Chinese patent application CN103486121A discloses a solid wood splicing structure (hereinafter referred to as "prior art 2"), comprising a carrier plate (1) and a bracket plate (2), wherein the carrier plate (1) is provided with a tongue and groove (11), and the bracket plate (2) is provided with a convex pattern (21), and the carrier plate (1) is provided with a positioning structure at both ends of the tongue and groove (11) and at both ends of the bracket plate (2) for preventing the carrier plate (1) and the bracket plate (2) from moving longitudinally. Although the prior art 2 can overcome the problem of "longitudinal movement of the carrier plate and the insert plate" existing in the above patent CN102700355A, it also has other problems existing in CN102700355A.

[0004] Chinese patent application CN105365004A discloses a method and device for splicing wooden decorative strips (hereinafter referred to as "prior art 3"), the method steps including: (1) moisture control: (2) transverse splicing: (3) longitudinal splicing: (4) cutting. The device includes a frame, and a tightening cylinder assembly and an extrusion cylinder assembly arranged on the frame. Although the method and device for splicing wooden decorative strips of the invention can produce and process wooden decorative strips by splicing the waste scraps generated by upstream wood product processing enterprises in a transverse and longitudinal manner, the method and device can realize the waste recycling of waste scraps, and the products produced by the method are not deformed or peeled, which meets the production requirements of wooden decorative strip products. However, it still has the same problems as prior art 1, such as not being resistant to pulling, not being resistant to tearing, and requiring the use of adhesives.

[0005] Chinese patent application CN110821095A discloses a splicing structure for environmentally friendly wooden flooring (hereinafter referred to as "prior art 4"). Although the elastic force of the spring 14 pushes the slider 8, so that the cork core layer 2 and the reinforcement layer 3 inside the wooden board body 1 can increase the toughness of the wooden flooring and avoid deformation, this "cross-latch type" fixing method belongs to a relatively traditional fixing structure, and the fixing is generally loose and unstable. The overall idea of ​​its connection structure is still similar to the above-mentioned prior arts, and there is no major new concept compared with the traditional wood fixing method.

[0006] Chinese patent application CN101372996A discloses a novel assembly and connection method and device for disassembling and assembling furniture invented by the inventor of this patent (hereinafter referred to as "prior art 5"). The method is characterized in that a trapezoidal bar or a "〕"-shaped bar is fixed on the plane of the furniture board by screws, and a trapezoidal groove of a corresponding shape is opened on the side of the other connected board body. During assembly, the trapezoidal groove is inserted into the trapezoidal bar or the "〕"-shaped bar to achieve assembly connection and positioning. Although the device has a strong structure, it has a complex structure and requires special spare parts, which results in high cost of spare parts, and the installation is time-consuming and the labor cost is also high.

[0007] Chinese patent application CN106337863A discloses a seamless connection structure between furniture parts that is convenient for assembly and disassembly by the inventor of the present patent (hereinafter referred to as "prior art 6"), which comprises two furniture parts that can be connected to each other, namely a first furniture part (1) and a second furniture part (2): one or more connection buckles (11) are provided on the connection surface of the first furniture part (1); a connection slot (21) is correspondingly provided on the connection surface of the second furniture part (2); a connection buckle entrance slot (22) that is connected to the connection slot (21) is also provided on the second furniture part (2), and the connection buckle entrance slot (22) can be used to insert the connection buckle (11) therein and then push it into the connection slot (21) during connection and installation: the exit surface of the connection buckle entrance slot (22) and the exit surface of the connection slot (21) are located on the same side of the second furniture part (2), and there is no opening toward the other side of the second furniture part (2). Although the connection buckle entrance slot (22) can make the furniture firmly connected, convenient to disassemble, and intact in appearance, it also has the problems of complex structure, need for specific accessories, high cost, and time-consuming installation in the prior art 5.

[0008] Chinese patent application CN110701153A discloses a seamless splicing part invented by the inventor of this patent (hereinafter referred to as "prior art 7"), comprising a first component and a second component, wherein one end of the first component for connecting to the second component is provided with a first tenon and a first mortise which are equal in length to the end face, and one end of the second component for connecting to the first component is provided with a second tenon and a second mortise which are equal in length to the end face; the shape and structure of the first tenon and the second tenon are exactly the same, and the shape and structure of the first mortise and the second mortise are exactly the same; the mortise structure of the first mortise and the second mortise is characterized by being wide inside and outside and narrow in the middle, and the tenon structure of the first tenon and the second tenon corresponds to the structure of the mortise, so that the first component and the second component can be pressed and spliced ​​in a forward and backward symmetrical manner, so that the first tenon is completely embedded in the second mortise, and the second tenon is completely embedded in the first mortise. Although there are certain improvements (the tenon and mortise of the invention are compared with the protrusion and groove of the prior art 1, except for the difference in local structure, the overall design concept is still basically based on the concept of parallel docking structure), but in fact there is no essential improvement over the parallel docking structure of the above-mentioned prior arts 1 and 2, and there is only one tenon on one component, which cannot form a mutual support effect and is still unstable. In addition, the tenon is round or chamfered, which increases the rotatability of the tenon (i.e., instability), making it difficult to achieve a stable and firm connection, and it is not resistant to pulling or tearing. In order to enhance the stability and firmness of the connection, it is actually difficult to separate from industrial adhesive (industrial adhesive must be used for docking and bonding); in addition, the tenon must be processed into a round head shape (the mortise must also be processed into a corresponding arc surface), and the process is complicated, time-consuming, and costly.

[0009] Chinese patent application CN1319710A discloses an easily removable wooden floor and its laying and replacement method (hereinafter referred to as "prior art 8"), wherein the easily removable wooden floor is provided with a tenon facing the board surface and a groove for the tenon of another wooden board to be embedded on the protruding parts of the two long side edges of each strip of wooden floor, and its two short side end faces are planes, forming an upper and lower interlocking structure. Its laying method is to install the tenons relative to each other. Its replacement method is to suck up and replace the wooden floor to be replaced with a suction cup. Another structure is that each long side edge of each wooden floor is provided with an angle groove or arc groove composed of an inclined surface or arc surface inclined inwardly and downwardly and another plane or arc surface, and its two short side end faces are planes. Its laying method is to fix at intervals. Its replacement method is the same as above. This invention makes it extremely convenient to directly take out and replace the deformed wooden floor vertically. Although it has a certain structural force in the direction of the plate surface (the planar direction of the upper and lower planes of the plate), that is, it has a certain lateral pulling structural force, it does not have a large structural force or tension or pulling force in the direction perpendicular to the plate surface; even if interference fit can be performed to strengthen the connection force, its connection structural force is difficult to sustain; it is difficult to be used as cabinet panels, box panels, door panels and other panels that require higher structural strength.

[0010] Chinese patent CN210859446U discloses a seamless splicing piece invented by the inventor of this patent (hereinafter referred to as "prior art 9"), which is essentially the same technical solution as prior art 7 and also has the same technical deficiencies.

[0011] Chinese patent CN210859445U discloses an easy-to-process splicing piece invented by the inventor of this patent (hereinafter referred to as "prior art 10"), comprising a first component and a second component, wherein one end of the first component used for connecting the second component is provided with a first tenon and a first mortise which are equal in length to the end face, and one end of the second component used for connecting the first component is provided with a second tenon and a second mortise which are equal in length to the end face; the shape and structure of the first tenon and the second tenon are exactly the same, and the shape and structure of the first mortise and the second mortise are exactly the same; the mortise widths of the first mortise and the second mortise are characterized by being wide outside and narrow inside or having the same inner and outer widths, and the tenon structure of the first tenon and the second tenon corresponds to the structure of the mortise, so that the first component and the second component can be pressed and spliced ​​in a forward and reverse symmetrical manner, so that the first tenon is completely embedded in the second mortise, and the second tenon is completely embedded in the first mortise, and the double mortise and tenon structure will be very stable after splicing. Although it has a certain structural force in the direction of the board surface (upper and lower planes), it does not have a large structural force or tension in the vertical direction; even if an interference fit can be achieved, the structural force is difficult to sustain; it is difficult to be used as cabinet panels, box panels, door panels and other panels that require high structural force. In other words, it is essentially the same technical solution as prior arts 7 and 9, and has the same technical defects.

[0012] Chinese patent CN209620484U discloses a mortise and tenon joint structure wall panel (hereinafter referred to as "prior art 11"), which relates to a mortise and tenon joint structure wall panel, wherein one side of the wall panel body faces the side wall on one side to form a first connection portion, and the other side of the panel body faces the side wall on the other side opposite to the first connection portion to form a second connection portion, wherein the first connection portion includes a first platform located on the outside, at least one inclined tenon located in the middle, and a second platform located on the inside, and the second connection portion includes a third platform located on the inside, at least one inclined mortise located in the middle, and a fourth platform located on the outside, and the number of the inclined tenons and the inclined mortise grooves is equal and can be connected one by one. The wall panel provided by the utility model solves the problems of the mortise and tenon structure being vulnerable, loosely coupled, and easy to slide and dislocate in the existing wall panels, and the three-dimensional V-shaped concave surface formed between the wall panels will give the wall a three-dimensional sense of lines. Although it has certain structural force in the direction of the board surface (upper and lower planes), it does not have large structural force or tension in the direction of the vertical surface; even if it can be interference fit, the structural force is difficult to last; it is difficult to be used as a board with high structural force requirements such as cabinet boards, box boards, door boards, etc. That is, it has the same technical defects as the prior art 10. It only has a slight difference in the shape of the tenon and the mortise between it and the prior art 7, 9, and 10. It does not have a substantially different technical solution from these existing wood board docking technologies, and it has the same technical deficiencies as these existing technical solutions.

[0013] Chinese patent CN205242948U discloses a new type of floor with flexible structure change (hereinafter referred to as "prior art 12"), including a panel and a base plate, and its design key points are: the base plate is formed by splicing a plurality of solid wood boards in sequence, and the upper surface of the solid wood board is provided with longitudinal grooves arranged along the length direction of the base plate and transverse grooves arranged along the width direction of the base plate, the transverse grooves and the longitudinal grooves are intersected and connected, and the longitudinal grooves on each solid wood board are arranged in a straight line in sequence to form a long groove that spans the base plate along the length direction of the base plate; the panel is bonded to the upper surface of the base plate. The utility model provides a new type of floor with flexible structure change when used in conjunction with floor heating, which has good internal force balance, is not easy to deform and crack, and has good thermal conductivity and thermal insulation effect, high thermal efficiency, and is environmentally friendly. Moreover, these distributed grooves also help to conduct geothermal heat and keep warm, so that the temperature of the ground surface is more uniform, and ultimately improves energy efficiency. However, it is not a specific strong structure, and can only be used as a floor, and cannot be used as a cabinet board, door panel, etc. In addition, its jointed tongue and groove are difficult to have anti-folding properties, that is, it cannot be anti-folding, for example, Figure 3 By folding the other solid wood board 3 upward, the tenon 36 can be easily disengaged from the first tenon groove 35.

[0014] Chinese patent CN202831535U discloses a floor lock structure (hereinafter referred to as "prior art 13"), including a tenon and a tenon groove, the tenon is composed of a connection part and a tenon tongue extending downward from the end of the connection part, the tenon groove is composed of a connection part and a tenon tongue extending upward from the end of the connection part, the tenon tongue and the tenon tongue are inclined inward, the angle between the outer side and the inner side of the tenon tongue and the floor plane is 85-95 degrees, a locking protrusion is provided on the outer side of the tenon tongue, the angle between the inner side and the outer side of the tenon groove and the floor plane is 85-95 degrees, a locking recess is provided on the inner side of the tenon groove to engage with the locking protrusion, and the locking recess is located above the contact part between the outer side of the tenon groove and the tenon tongue. The beneficial effects of the utility model are: the inward tilt design of the tenon tongue and the tenon tongue makes the installation force required for the lock installation small, the locking is firm, and the installation is convenient, especially when installing the floor at the edge of the wall. Although it has a certain structural force in the direction of the board surface (upper and lower planes), it does not have a large structural force or tension in the direction of the vertical surface. Even if it can be interference-fitted, the structural force is difficult to last. It is difficult to be used as a board with high structural force requirements such as cabinet boards, box boards, and door boards. That is, it has the same technical defects as the prior art 11. It only has a slight difference in the shape of the tenon and the mortise between it and the prior art 11. It does not have a technical solution that is essentially different from these existing wooden board docking technologies. It has the same technical deficiencies as these existing technical solutions. At the same time, it is difficult for the docking mortise and tenon tongues (3, 4) and the mortise and tenon (2) to have anti-folding performance, that is, it cannot resist folding. Once folded, the mortise and tenon tongues (3, 4) can easily fall out of the mortise and tenon (2).

[0015] Chinese patent CN202644923U discloses a floor mortise and tenon locking structure (hereinafter referred to as "prior art 14"). It mainly solves the technical problem that the existing floor without keels will produce height differences when the ground is uneven during laying. The technical solution of the utility model is: a floor mortise and tenon locking structure, the floor can be a separate floor body when floor heating is used according to the construction situation, and a composite structure of a floor body and an elastic floor carrier when there is no floor heating. The floor body is a green-yellow balanced bamboo floor or a wood, single-sided bamboo, wood-plastic, or porcelain floor. A high-low balance tenon with an arc-shaped flat bottom and a convex outward is processed on one side and one end of the spliced ​​floor body, and a high-low balance four-side locking tenon with an inward upward curved finger shape at the flat bottom tail below it, and a high-low balance four-side locking tenon with matching shape is processed on one side and one end of the other floor body spliced ​​with it. The utility model has an obvious effect in correcting the height difference when assembling floors on uneven ground. This structure does not have a large structural force or tension in any direction; even if it can be interference fit, the structural force is difficult to last; it is difficult to be used as a board with high structural force requirements such as cabinet boards, box boards, door boards, etc. That is, there are the same technical defects as the prior arts 7, 9, and 10. It only has a slight difference in shape between the tenon and the mortise groove from the prior arts 7, 9, and 10. It does not have a technical solution that is essentially different from these existing wooden board docking technologies, and it has the same technical deficiencies as these existing technical solutions. At the same time, it is difficult for the tenon (1, 3) and the mortise (2, 4) to have anti-folding performance, that is, it cannot resist folding. Once folded, the tenon (1, 3) can easily fall out of the mortise groove (2, 4). That is, there are the same technical defects as the prior arts 11 and 12. It only has a slight difference in shape between the tenon and the mortise groove from the prior arts 11 and 12. It does not have a technical solution that is essentially different from these existing wooden board docking technologies, and it has the same technical deficiencies as these existing technical solutions.

[0016] Chinese patent CN201981763U discloses a buckle-type structure suitable for connecting strip-shaped plates made of plastic materials (hereinafter referred to as "prior art 15"), which enables effective connection and has multiple advantages. It includes a strip-shaped plastic plate (1), the key is that one end of the plate (1) is provided with an oblique groove (2), and the other opposite side is provided with an oblique tenon (3) matching the groove (2), the angle A between the two side walls of the groove (2) and the plane of the plate (1) is 50 to 85 degrees, and there is a small gap (4) between the end of the tenon (3) and the bottom surface of the groove (2). The structure provided by the utility model is suitable for various plastic materials, such as PVC, PE or other synthetic materials. Although it has a certain structural force in the direction of the plate surface (upper and lower planes), it does not have a large structural force or tension in the direction of the vertical surface; even if it can be interference fit, the structural force is difficult to last; it is difficult to be used as a plate with high structural force requirements such as cabinet panels, box panels, door panels, etc. The only difference between the tenon and the mortise is the shape of the tenon and the mortise groove. The tenon and the mortise groove are not essentially different from the existing wood board docking technologies. The tenon and the mortise groove have the same technical deficiencies as the existing wood board docking technologies. The "barb" type connection structure can only be adapted to plastic or steel connection structures, but not to wood connection structures, because if the mortise and tenon connection structure of wood is made into a "barb" type structure, it will break immediately, and its structural strength has no strength, especially when the entire wood board is only one to two centimeters long, and there are so many "barb" type structures, there is no structural strength at all.

[0017] Chinese patent CN102619323A discloses a buckle-type structure suitable for connecting strip-shaped plates made of plastic materials (hereinafter referred to as "prior art 16"), which enables effective connection and has multiple advantages. It includes a plate (1) made of strip-shaped plastic material, one side of which has a groove (2), and the other side of which has a corresponding tenon (3) that can be inserted into the groove (2). The key is that the opening of the groove (2) is upward, the tenon (3) is downward, and the groove (2) and the tenon (3) are mutually embedded, and the angle between the groove (2) and the plane of the plate (1) is 50 to 80 degrees, forming a groove (2) obliquely downward, and the tenon (3) is compatible with the groove (2) obliquely downward. The structure provided by the invention is suitable for various types of plastic materials, such as PVC, PE or other synthetic materials. Although it has certain structural force in the direction of the board surface (upper and lower planes), it does not have large structural force or tension in the direction of the vertical surface; even if it can be interference fit, the structural force is difficult to last; it is difficult to use as cabinet boards, box boards, door boards and other boards that require high structural force; it is difficult to use as cabinet boards, box boards, door boards and other boards that require high structural force. It only has a slight difference in the shape of the tenon and the mortise from the existing technologies 11, 12, 13, 14, and 15. It does not have a fundamentally different technical solution from these existing wood board docking technologies, and it has the same technical deficiencies as these existing technical solutions. Summary of the invention

[0018] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and provide a wooden board splicing structure and a splicing board; it aims to solve the above-mentioned deficiencies in the prior art, so that the wooden boards can be spliced ​​more stably and firmly, and the tensile, tear and bending resistance can be enhanced, especially the structural strength can be maintained more lastingly, and at the same time, the structure is simple, no gluing is required, and the material and processing costs can be reduced.

[0019] Another object of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a method for splicing wooden boards, wherein the processed wooden boards can maintain a stronger structural strength for a longer period of time and have a low processing cost.

[0020] To achieve the above-mentioned purpose, the technical solution of the present invention is: a wooden board splicing structure, which includes a first wooden board A and a second wooden board B; the first wooden board A is provided with more than two mortise and tenon strips (i.e., mortise and tenon structure) on at least one end; the second wooden board B is provided with more than two tenons and mortise strips (i.e., mortise and tenon structure) on at least one end that match the mortise and tenon strips on the first wooden board A; the matching relationship between the tenon strips and mortise strips can enable the first wooden board A and the second wooden board B to be connected to form an integrated structure after being butted against each other through mortise and tenon; in the splicing structure in which the first wooden board A and the second wooden board B are butt-jointed and assembled (i.e., when connected to form an integrated structure after being butt-jointed), at least one tenon strip on the first wooden board A and / or the second wooden board B is installed in a corresponding mortise strip in a deformed state of being bent or twisted as a whole, forming a structure in which the corresponding tenon strip is bent or twisted as a whole in the corresponding mortise strip and is in a high-tension connection state.

[0021] A further technical solution of the present invention is: the overall bending or twisting structure of the tenon is a structure formed by the unbalanced interference fit between the tenon and the mortise, or a structure formed by a clamping installation formed by unequal spacing between multiple tenons and corresponding mortises, or a structure formed by providing a deflection structure in the mortise to force the corresponding tenon to form after installation.

[0022] A further technical solution of the present invention is that the mortise and tenon structure of the first wooden board A (ie the mortise and tenon structure thereon) is the same as or symmetrical to the mortise and tenon structure of the second wooden board B.

[0023] A further technical solution of the present invention is: the first wooden board A is provided with two mortises and two tenons on at least one end, namely a first mortise, a second mortise, a first tenon, and a second tenon; the second wooden board B is provided with a third tenon, a fourth tenon, a third mortise, and a fourth mortise on at least one end, which cooperate with the first mortise, the second mortise, the first tenon, and the second tenon on the corresponding end of the first wooden board A, namely, the first mortise on the first wooden board A and the third tenon on the second wooden board B are in a matching relationship, the second mortise on the first wooden board A and the fourth tenon on the second wooden board B are in a matching relationship, the first tenon on the first wooden board A and the third mortise on the second wooden board B are in a matching relationship, and the second tenon on the first wooden board A and the fourth mortise on the second wooden board B are in a matching relationship, and the matching relationship enables the first wooden board A and the second wooden board B to be mutually connected to form an integrated structure through the mortise and tenon structure.

[0024] A further technical solution of the present invention is: the second mortise of the first wooden board A is divided into a first entrance section and a first deflection section, the first entrance section is located at the entrance position of the second mortise, the first deflection section is located at the inner position of the second mortise, and the first deflection section of the second mortise is a mortise section that is deflected toward the first tenon direction of the first wooden board A relative to the first entrance section; the fourth mortise of the second wooden board B is divided into a second entrance section and a second deflection section, and the second deflection section is deflected (i.e., bent or curved or twisted) toward the third tenon direction relative to the second entrance section.

[0025] A further technical solution of the present invention is: the outer wall at the entrance of the third mortise of the second wooden board B is provided with a closing structure extending toward the middle, and the outer wall at the entrance of the first mortise of the first wooden board A is also provided with a closing structure.

[0026] Preferably: the main extension direction of each mortise and tenon on the first wooden board A and the second wooden board B forms an angle b of 60 to 80 degrees or 65 to 75 degrees with the upper plane P1 or the lower plane P2 of the corresponding wooden board body.

[0027] Preferably: the matching relationship between the first mortise on the first wooden board A and the third tenon of the second wooden board B is an interference fit relationship, and the width of the third tenon of the second wooden board B is wider than the width of the first mortise, that is, if the width of the first mortise is r1, the width of the third tenon is r1+d1;

[0028] The matching relationship between the second mortise of the first wooden board A and the fourth tenon of the second wooden board B is a gap matching relationship, and the width of the second mortise of the first wooden board A is wider than the width of the fourth tenon of the second wooden board B, that is, if the width of the fourth tenon of the second wooden board B is r2, the width of the second mortise is r2+d2;

[0029] The third mortise on the second wooden board B and the first tenon of the first wooden board A are in an interference fit relationship, and the width of the first tenon of the first wooden board A is wider than the width of the third mortise on the second wooden board B, that is, if the width of the third mortise on the second wooden board B is r3, the width of the first tenon of the first wooden board A is r3+d3;

[0030] The matching relationship between the fourth mortise on the second wooden board B and the second tenon of the first wooden board A is a gap matching relationship. The width of the fourth mortise on the second wooden board B is wider than the width of the second tenon of the first wooden board A, that is, if the width of the second tenon of the first wooden board A is r4, the width of the fourth mortise on the second wooden board B is r4+d4.

[0031] Preferably, the interference thickness (d1, d2, d3, d4) of each wooden board is designed to be 1-2 mm or the interference thickness (d1, d2, d3, d4) is designed to be 5-15% of the corresponding mortise and tenon thickness (r1, r2, r3, r4).

[0032] Preferably: according to the different numerical relationships of the interference of each wooden board, the following several structural situations will exist:

[0033] ①. When d2 = d4, d1 = d3, and d4 > d1, then d5 = d2 - d1 or d5 = d4 - d1 or d5 = d2 - d3 or d5 = d4 - d3; a actually existing gap d5 will appear on the middle side of the second tenon of the first wooden board A after splicing; a actually existing gap d5 will appear on the middle side of the fourth tenon of the second wooden board B;

[0034] ②. When d2 = d4, d1 = d3, and d4 = d1, then d5 = d2 - d1 or d5 = d4 - d1 or d5 = d2 - d3 or d5 = d4 - d3; the middle sides of the second tenon of the first wooden board A and the fourth tenon of the second wooden board B are in contact with each other after splicing, and the middle gap d5 becomes a contact state, that is, d5 = 0, and there is no gap in the middle;

[0035] ③. When d2 = d4, d1 = d3, and d4 < d1, then d5 = d2 - d1 or d5 = d4 - d1 or d5 = d2 - d3 or d5 = d4 - d3, that is, d5 = d4 - d1, and d5 < 0; at this time, interference fits are formed on both sides of the second tenon of the first wooden board A and the fourth tenon of the second wooden board B. The interference fit near the middle side will offset the bending deformation amount that the second tenon of the first wooden board A can occur towards the middle, and the offset is d1 - d4. The actual bending deformation amount that the second tenon of the first wooden board A can occur is d1 - (d1 - d4) = d4; the bending deformation amount that the fourth tenon of the second wooden board B can occur is also d4;

[0036] If d4 >= 0, the second tenon of the first wooden board A will still bend towards the middle to form a certain tension;

[0037] If d4 < 0, d4 < 0 means that the width (r4 + d4) of the fourth mortise of the second wooden board B is less than the width r4 of the second tenon of the first wooden board A. At this time, interference fits are formed on both sides of the second tenon of the first wooden board A. If -d4 > d1, -d4 > d1, then the interference degree on the right side of the second tenon of the first wooden board A has exceeded the interference degree on its left side, and the second tenon of the first wooden board A will bend to the left.

[0038] Preferably: the corresponding mortise and tenon are provided with a matching arc or circular arc chamfer structure, that is, the front end corner of the tenon is a chamfer structure, and the corresponding mortise is provided with a chamfer structure that can be matched with it; the corresponding mortise and tenon are also provided with a dovetail type matching structure.

[0039] Another technical solution of the present invention is: a spliced ​​board, which includes a wooden board splicing structure; the first wooden board A and the second wooden board B of the wooden board splicing structure are spliced ​​into a whole through the tenon and mortise matching structure.

[0040] Another technical solution of the present invention is: a method for splicing wooden boards, comprising a first wooden board A and a second wooden board B;

[0041] The first wooden board A is provided with more than two mortises and / or tenons, and the second wooden board B is provided with more than two tenons and / or mortises that match the mortises and / or tenons provided on the first wooden board;

[0042] By one of the following method steps or two of the following method steps or any combination of the two method steps, at least one tenon of the first wooden board A and / or the second wooden board is integrally bent or twisted and installed in the corresponding mortise, so that the corresponding tenon is integrally bent or twisted in the corresponding mortise to form a high tension connection structure:

[0043] Step 1: By designing the interference fit between the tenon and the mortise to be unbalanced, at least one tenon is bent or twisted as a whole and installed in the corresponding mortise;

[0044] Step 2: by designing that the spacings between the plurality of tenons and the corresponding mortise grooves are unequal, after the tenons are installed in a clamping manner, at least one tenon is bent or twisted as a whole and installed in the corresponding mortise groove;

[0045] Step 3: By designing at least one mortise to have a deflection structure, the corresponding tenon is forced to be bent or twisted as a whole when installed in the corresponding mortise.

[0046] Compared with the prior art, the present invention has the following characteristics, advantages and technical effects:

[0047] 1. The present invention completely overturns the existing technology that only interference fit technology, cross-bolt technology, toothed structure, adhesive technology and other technical concepts and technical methods are used to make the wood board more solid in the mortise and tenon joint. For example, the traditional interference fit technology includes: a. using wedge-shaped tenon strips and mortise grooves to squeeze each other to make the structure more solid; b. using the method of punching (i.e. driving a wedge-shaped wood block into the tenon strip) to enhance the structural strength of the mortise and tenon connection. For example, when making stools in the traditional way, wedge-shaped wood blocks are always driven into the mortise and tenon connecting the stool legs and the stool surface to make the stool more solid; c. The cross-bolt technology mainly refers to driving horizontal nails into the mortise and tenon structure; d. The toothed structure refers to the use of tooth-shaped structures that are close to each other in the mortise and tenon connection surface. The present invention completely subverts the traditional wood connection structure. By designing at least two tenons (or tenons, tenons, etc., which belong to the same concept in the present invention and will not be repeated here) on the same wooden board and at least two mortise grooves (or mortise holes) matching structures on another wooden board, and by designing the inner or outer spacing between the tenons to be different from the inner or outer spacing of the mortise grooves, after the mortise and tenon are assembled, the pressure on both sides of at least one tenon is unbalanced, causing the tenon to twist or deform or bend as a whole, forming a strong and lasting overall bending tension, which is completely different from the deformation tension formed by the deformation of the surface of the mortise and tenon caused by the traditional interference fit. That is, the overall bending tension of the tenon is completely different from the tension formed by the traditional interference fit that can only cause the surface deformation, and has a greater and more lasting bonding force, making the spliced ​​wooden board more solid and more durable. That is, the concept of the present invention is completely separated from the traditional interference fit concept.

[0048] 2. The pressure imbalance on both sides of the tenon strip of the present invention can be achieved through surplus, with one side being large surplus and the other side being hollow, slightly in contact, or slightly surplus. As long as there is a surplus difference (the surplus on both sides is not equal, resulting in pressure imbalance), the tenon as a whole will be twisted or bent, and the tenon as a whole will form a kind of deformation internal tension, which will make the structural force of the tenon and the mortise stronger, more lasting, and more durable. Although the present invention may also use interference fit technology, this interference fit technology is not to make the mortise and tenon "fully stuck" like the traditional interference fit technology, but to make the tenon "stuck sideways" or "twisted".

[0049] 3. The pressure imbalance on both sides of the tenon of the present invention can be achieved through the gap between each tenon and each mortise, which can provide more structural forms for the present invention.

[0050] 4. When there are multiple matching mortise and tenon strips, a synergistic effect will be formed. It is not a mutually independent mortise and tenon strip matching structure, which has better anti-bending and anti-folding performance. For example, when there are more than two tenons, the tenons can form a mutually supporting synergistic effect, that is, no matter which direction they are bent (folded), one of the tenons will become the folding "support point" or "pulling point" of the other tenon strip, forming a larger anti-torsion moment; unlike the prior art, there is only one tenon strip, no support point, and the anti-bending moment it can withstand is very small. After bending (folding), it is easy for the tenon strip to fall out of the mortise strip and has no anti-bending performance; while in the present invention, when bending, one tenon strip will hold the mortise of the other wooden strip tightly (becoming a "pulling point"), and the other tenon strip will support it to form a "support point". The "support point" of the present invention is separated from the "pulling point", which increases the anti-bending moment; while the prior art is basically an independent mortise and tenon strip matching structure, and its "support point" and "pulling point" are basically the same mortise strip mortise, and the anti-bending moment is very small.

[0051] 5. The spliced ​​board of the present invention has better tensile resistance. Since the tension formed by pulling is basically parallel to the wooden board surface, and the angle design of the tenon or mortise and the board surface (for example, 70 degrees) of the present invention can decompose the folding or pulling tension into a large part of the force that is not parallel to the tenon or mortise, so that the pulling force parallel to the tenon or mortise will be smaller, and the pulling force is almost decomposed into half of the force, thereby enhancing the tensile resistance and folding resistance of the entire spliced ​​board.

[0052] 6. The combination of the present invention will be more flat, and the angle design between the tenon or mortise and the board surface of the present invention can make the present invention be assembled by applying pressure from a direction nearly perpendicular to the board or a direction nearly parallel to the tenon or mortise, that is, a large area of ​​pressure is applied from the upper and lower surfaces of the board as a whole. For example, two boards are placed on a platform for docking, and a flat pressure plate is used to apply pressure to them. After pressing, the upper and lower surfaces of the two boards are naturally flat with the flat pressure plate and the platform, so that the two sides of the assembled spliced ​​board are particularly flat, unlike the existing technology that mostly uses pressure from both sides of the board for docking, and the direction of pressure is completely parallel to the upper and lower surfaces of the board. There is no pressure control in the vertical direction of the upper and lower surfaces of the board, and it is impossible to ensure that the upper and lower surfaces of the combined board after docking are flat.

[0053] 7. Since the external forces on the combined wooden boards after splicing are mainly from the plane tension and the vertical pressure, it is difficult for the outside world to apply an oblique force of about 70 degrees to the wooden boards. For example, when used as a floor, people standing on the wooden boards will apply vertical pressure; if used as a cabinet board, it is mainly from the pressure in the plane direction of the wooden board, or the plane tension between the two wooden boards; that is, the plane tension (or extrusion) and the vertical pressure are the main structural tensions in use. If there is no tension resistance, it will definitely cause the two boards to separate. For example, the left and right sliding cabinet doors require a good anti-plane tension structure; the vertical pressure is mainly the vertical force applied. For example, the floor mainly comes from the vertical pressure itself, because people walking on the floor will apply a strong vertical pressure. If the vertical pressure resistance is not good, vertical separation will occur, that is, the floor will be uneven. Cabinet doors, box surfaces, etc. are also susceptible to vertical pressure on the board surface. The present invention is designed to be connected at an inclined angle of 70 degrees (roughly 70 degrees, the same below, no further details are given), so that no matter whether it is vertical pressure or planar tension, for the mortise and the tenon, its pull-out force (external force applied in a direction parallel to the mortise and the tenon) is only about half of the vertical pressure or planar tension, and the connected wooden board is unlikely to be subjected to a pulling force in a 70-degree direction (that is, it is difficult to be directly subjected to an external force applied in a direction parallel to the mortise and the tenon when in use). In fact, this oblique mortise and tenon connection structure can actually reduce the vertical pressure and planar tension of the connected wooden board by about half, thereby doubling the ability to resist pulling (in the planar direction) and impact (in the vertical direction), that is, the connected wooden board of the present invention is more durable.

[0054] 8. The present invention uses the margin to cause the tenon to twist or bend as a whole, so that the tenon is bent as a whole and does not get stuck in the mortise, forming a strong and lasting bonding force; at the same time, because of the oblique docking of the tenon and the mortise (that is, the direction in which the tenon and the mortise extend forms an angle of approximately 70 degrees with the upper and lower planes of the wooden board), the external force on the tenon and the mortise is reduced by about half, that is, this docking structure has better resistance to external force damage. The above two structures both enhance the structural strength of the combined wooden board, so that the combined wooden board does not need to use adhesives to increase its firmness like traditional combined wooden boards, thus saving the cost of adhesives and reducing the working hours of applying adhesives. At the same time, because no adhesives are used, the toxic side effects that may be caused by adhesives are also reduced, which is more environmentally friendly. In addition, adhesives generally have a lifespan, and after the lifespan expires, they will age and loosen. However, the present invention does not use adhesives, so its structural strength has better durability and can last the same period as the life of the wooden board itself.

[0055] 9. After the first plank A and the second plank B are installed, the fourth tenon of the second plank B can tightly press the first tenon of the slightly enlarged plank A into the third mortise of the second plank B; the second tenon of the first plank A can also tightly press the third tenon of the slightly enlarged plank B into the first mortise of the first plank A, forming a "double-locking structure". When the first tenon of the first plank A and the third tenon of the second plank B are both difficult to pull out or disengage, a greater torque effect is formed (that is, the first tenon and the third tenon are locked on both sides and difficult to disengage), forming a good synergy, improving the torsion and bending resistance of the entire spliced ​​board, making it difficult for the two planks to disengage from each other. In addition, the second tenon and the fourth tenon are installed in the fourth mortise and the second mortise respectively by bending (or twisting) as a whole, and they also have all the functions and advantages of the "unlocked" state. Therefore, when the first tenon and the third tenon are firmly stuck in the third mortise and the first mortise by the fourth tenon and the second tenon respectively, and the second tenon and the fourth tenon are locked by the fourth mortise and the second mortise respectively, each component achieves a combined effect of self-locking and interlocking, which can ensure that the butted wooden boards are very stable and firm without the need for sharpening, gluing, or cross bolts.

[0056] The detailed structure of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0059] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. In the description of the present invention, the meaning of "at least two" or "two or more" includes the base number, that is, at least two, which may be two or more, such as two, three, etc., unless otherwise specifically defined; the meanings of other similar expressions are similar.

[0060] In the present invention, unless otherwise clearly stipulated and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; "connection" may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0062] ~ represents a numerical range. For example, 1~5 represents from 1 to 5, and for another example, 30~60 degrees represents from 30 degrees to 60 degrees, and for yet another example, both 1~3% or 1%~3% represent from 1% to 3%.

[0063] > is the greater than symbol. For example, a>b means a is greater than b.

[0064] < is the less than symbol. For example, a<b means a is less than b.

[0065] >= is the greater than or equal to symbol. For example, a>=b means a is greater than or equal to b.

[0066] <= is the less than or equal to symbol. For example, a<=b means a is less than or equal to b.

[0067] - is the negative sign or minus sign. For example, -a represents the negative of a, and a - b represents a minus b. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 It is a schematic structural diagram of the first wooden board A of Embodiment 1 of the present invention;

[0069] Figure 2 A perspective view (i.e., a three-dimensional view, the same below) of the first wooden board A or the second wooden board B of Embodiment 1 of the present invention;

[0070] Figure 3 A perspective view (i.e., a three-dimensional view) of the first wooden board A or the second wooden board B from another viewing angle of Embodiment 1 of the present invention;

[0071] Figure 4 It is an exploded view of Embodiment 1 of the present invention (i.e., a structural schematic diagram before assembly, i.e., a to-be-assembled view, the same below); it is also an to-be-assembled view of Embodiment 5;

[0072] Figure 5 It is an assembly diagram of Embodiment 1 of the present invention (i.e., a structural diagram before assembly); it is also an assembly diagram of Embodiment 5;

[0073] Figure 6 is a schematic diagram of the structure of embodiment 1 of the present invention after being assembled (that is, a schematic diagram of the structure of embodiment 5 of the present invention);

[0074] Figure 7 for Figure 6 A local enlarged view along line C;

[0075] Figure 8 for Figure 7 A local enlarged view along line D;

[0076] Fig. 9 This is a schematic structural diagram of a first wooden board A and / or a second wooden board B in accordance with Embodiment 2 of the present invention;

[0077] Fig.10 This is a schematic structural diagram of a first wooden board A and / or a second wooden board B in Embodiment 3 of the present invention;

[0078] Fig.11 A schematic diagram of the exploded structure of Example 4 of the present invention (i.e., a diagram of a docking state before the first wooden board A and the second wooden board B of Example 4 of the present invention are assembled);

[0079] Fig.12 for Fig.11 A local enlarged view along line G;

[0080] Fig.13This is a structural comparison diagram of the first wooden board A and the second wooden board B of Example 4 of the present invention, that is, a structural imaginary diagram, which is a non-actual installation diagram, that is, assuming that the mortise and tenon are not deformed and the AB boards are in the installed position, the position relationship and structural schematic diagram of each mortise and tenon should be in. Through this structural comparison diagram, the shape structure and matching relationship of each mortise and tenon of the first wooden board A and the second wooden board B can be more clearly understood; since the structural comparison diagram is not a structural diagram of the actual installation, there will be overlapping parts, so the sideline of the second wooden board B is represented by a dotted line (that is, the dotted line is used to represent the theoretical position when the sideline of the second wooden board B is not deformed);

[0081] Fig.14 for Fig.13 A local enlarged view along the H line;

[0082] Fig.15 for Fig.13 A local enlarged view along line I;

[0083] Fig.16 is a schematic diagram of the structure of Embodiment 4 of the present invention (i.e., a schematic diagram of the structure after the first wooden board A and the second wooden board B of Embodiment 4 of the present invention are assembled);

[0084] Fig.17 for Fig.16 A local magnified view along the K-line range;

[0085] Fig.18 This is a schematic diagram of the explosion structure of Example 5 of the present invention (that is, before assembly). DETAILED DESCRIPTION

[0086] Embodiment 1, as Figure 1-4 As shown: a wooden board splicing structure, comprising a first wooden board A and a second wooden board B; the first wooden board A is provided with two mortises and two tenons on at least one end (hereinafter referred to as "the butt joint end of the first wooden board A" or "the butt joint end of the first wooden board A", all of which have the same meaning, the same below) , namely, a first mortise 1, a second mortise 2, a first tenon 3, and a second tenon 4; the main body direction (i.e., the main body extension direction) of the first mortise 1, the second mortise 2, the first tenon 3, and the second tenon 4 is as shown in FIG. Figure 1The directions shown by the center lines Z1, Z3, Z4, and Z2 in the figure, hereinafter referred to as the "mortise and tenon extension directions" or "mortise and tenon directions") are basically parallel, that is, the first mortise 1, the second mortise 2, the first tenon strip 3, and the second tenon strip 4 are designed to be parallel; the extension directions of the first mortise 1, the second mortise 2, the first tenon strip 3, and the second tenon strip 4 form an angle b of 60 to 80 degrees with the upper plane P1 or the lower plane P2 of the wooden board body (as shown in FIG. 1 ), that is, the angle b=60 to 80 degrees, and the angle b is usually about 70 degrees (such as 65 to 75 degrees), which is more suitable. After use and assembly, it is more conducive to resisting pulling or bending between the two wooden boards, because the pulling force is basically along the direction of the upper plane P1 or the lower plane P2, and the bending force is basically along the direction perpendicular to the upper plane P1 or the lower plane P2. direction, so this pulling force and bending force are not consistent with the main direction of the mortise or tenon, the pulling force or bending force forms an angle of about 70 degrees with the main direction of the mortise or tenon, resulting in the decomposition of the pulling force or bending force to the tension along the main direction of the mortise or tenon is roughly reduced by about half, so the wooden board splicing structure has better tensile and bending resistance. That is to say, since the angle b is about 70 degrees, the pulling or bending tension is decomposed in the direction of the mortise and the tenon, and is decomposed into an angle b of about 70 degrees different from the main direction of the mortise or tenon, resulting in only about half of the tension formed by pulling or bending falling in the main direction of the mortise or tenon, that is, the relative pulling and disengagement force between the mortise and the tenon is reduced, thereby improving the tenon of the present invention The ability to resist disengagement from the mortise after assembly is improved.

[0087] At least one end portion of the second wooden board B is provided with two tenons and two mortises, i.e., a third tenon 5, a fourth tenon 6, a third mortise 7, and a fourth mortise 8, which match the two mortises and two tenons on the first wooden board A; that is, at least one end portion of the second wooden board B is provided with a third tenon 5, a fourth tenon 6, a third mortise 7, and a fourth mortise 8, which match the first mortise 1, the second mortise 2, the first tenon 3, and the second tenon 4 on the first wooden board A.

[0088] The wooden board splicing structure can also be arranged on one end of the wooden board, or the splicing structure (i.e., the mortise and tenon structure, referred to as the mortise and tenon structure) can be arranged on multiple ends to facilitate splicing from different directions; multiple wooden boards with the wooden board splicing structure can be relatively connected and spliced ​​into a larger wooden board, and the entire wooden board can be ensured to be flat and firm.

[0089] like Figure 4As shown, the first mortise 1 on the first wooden board A and the third tenon 5 on the second wooden board B are designed to be in a matching relationship (can also be called a matching relationship, the same below), that is, the first mortise 1 on the first wooden board A and the third tenon 5 on the second wooden board B are in a matching relationship. The so-called matching relationship means that the size of the first mortise 1 on the first wooden board A can be used to install the third tenon 5 on the second wooden board B, that is, the third tenon 5 on the second wooden board B can be installed into the first mortise 1 on the first wooden board A (the same below). Similarly, the second mortise 2 on the first wooden board A and the fourth tenon 6 on the second wooden board B are in a matching relationship; the first tenon 3 on the first wooden board A and the third tenon 7 on the second wooden board B are in a matching relationship; the second tenon 4 on the first wooden board A and the fourth tenon 8 on the second wooden board B are in a matching relationship. The above matching relationships can ensure that the first wooden board A and the second wooden board B can be connected to each other as a whole through the mortise and tenon structure (such as Figure 6 as shown).

[0090] like Figure 3 As shown, the longitudinal direction Z5 of the mortise groove can be a through groove; or a blind groove, that is, a section is left at one or both ends without a mortise and tenon, so that the longitudinal displacement between the tenon strip and the mortise groove can be limited. However, this is not very meaningful for interference fit structures, because interference fit makes it difficult for longitudinal displacement to occur.

[0091] like Figure 4 As shown, the matching relationship between the first mortise 1 on the first wooden board A and the third tenon 5 of the second wooden board B is an interference fit relationship, that is, the width of the third tenon 5 of the second wooden board B is wider than the width of the first mortise 1 by a thickness of d1 (the terms "width" or "thickness" in this case have the same meaning, the same below), that is, if the width of the first mortise 1 is r1, then the width of the third tenon 5 is r1+d1. The matching relationship between the second mortise 2 of the first wooden board A and the fourth tenon 6 of the second wooden board B is a gap matching relationship (the same below), that is, the width of the second mortise 2 of the first wooden board A is wider than the width of the fourth tenon 6 of the second wooden board B by a thickness of d2, that is, if the width of the fourth tenon 6 of the second wooden board B is r2, then the width of the second mortise 2 is r2+d2.

[0092] The above-mentioned “the width of the third tenon 5 of the second wooden board B is wider than the width of the first mortise 1 by a thickness of d1” or “the width of the second mortise 2 of the first wooden board A is wider than the width of the fourth tenon 6 of the second wooden board B by a thickness of d2” does not merely mean that the tenon as a whole is wider than the corresponding mortise by a certain thickness or that the mortise as a whole is wider than the corresponding tenon by a certain thickness, nor does it mean that the overall front-to-back width of the mortise or tenon (i.e. the front-to-back width of the entire mortise or tenon itself) must be the same (for example, the width of the fourth tenon 6 is r2, which does not mean that the entire width of the fourth tenon 6 is r2, but means that at least one part of the fourth tenon 6 has a width of r2). The tenon being wider than the corresponding mortise as a whole by a certain width or the mortise being wider than the corresponding tenon by a certain width as a whole is only one of the situations of the present invention, and is not all the situations to be protected by the present invention. All the tenons being wider than the corresponding mortise by a certain thickness (or width) in the present invention refer to (unless otherwise specified) at least one portion of the tenon (e.g., the head, middle portion, root, any one portion, multiple portions, or all portions (i.e., the whole)) having a width wider than the corresponding mortise by a certain thickness (e.g., d1, d3), and the mortise being wider than the corresponding tenon by a certain thickness (or width) also refers to at least one portion of the mortise (e.g., the head, middle portion, root, any one portion, multiple portions, or all portions (i.e., the whole)) having a width wider than the corresponding tenon by a certain thickness (or width). Similarly, the figures ( Figure 4 , 5 , 6, 7, 8, etc.) also only show a situation where the whole is wider by a certain width (that is, all parts of the tenon or mortise are wider by a certain width), which does not mean that the present invention only protects the situation where the whole is wider by a certain width. The present invention is to protect the situation where the tenon is wider than the corresponding mortise or the mortise is wider than the corresponding tenon by a certain width in at least one part (that is, any one or more parts or the whole). That is, the drawings only show one wider situation. Of course, the drawings cannot show all the situations where the parts can be wider. The analysis of the statement in this paragraph adapts to the analysis of the description of the corresponding technology in the patent document of the entire present invention.

[0093] Similarly, the matching relationship between the third mortise groove 7 on the second wooden board B and the first tenon strip 3 of the first wooden board A is an interference fit relationship, that is, the width of the first tenon strip 3 of the first wooden board A is wider than the width of the third mortise groove 7 on the second wooden board B by the thickness of d3, that is, if the width of the third mortise groove 7 on the second wooden board B is r3, then the width of the first tenon strip 3 of the first wooden board A is r3+d3. The matching relationship between the fourth mortise groove 8 on the second wooden board B and the second tenon strip 4 of the first wooden board A is a gap matching relationship, and the width of the fourth mortise groove 8 on the second wooden board B is wider than the width of the second tenon strip 4 of the first wooden board A by the thickness of d4, that is, if the width of the second tenon strip 4 of the first wooden board A is r4, then the width of the fourth mortise groove 8 on the second wooden board B is r4+d4.

[0094] When splicing, Figure 4-6 As shown, the first mortise 1, the second mortise 2, the first tenon 3, and the second tenon 4 of the A board (i.e., the first wood board A, the same below) are respectively connected with the third tenon 5, the fourth tenon 6, the third mortise 7, and the fourth mortise 8 of the B wood block (i.e., the second wood board B, the same below), and then pressed against each other (as shown in FIG. Figure 6 As shown in Figure 1 As shown, since the mortise and tenon strips are in an oblique relationship (at an angle of about 70 degrees) relative to the plane of the wooden board (upper plane P1, lower plane P2), it is convenient to press and butt the upper and lower planes together. The lower plane of the B board can be placed on the work surface g1 (as shown in FIG. Figure 5 As shown), then the position of plate A is aligned with plate B, and then the lower pressing plate g2 is used to press plate A toward plate B (the lower pressing plate g2 is usually driven automatically by a machine, which is fast and safe. Of course, the lower pressing plate g2 can also be pressed down manually). In this way, on the one hand, it is not necessary to hold the two plates tightly like the traditional butt-jointed plates, and then butt them together in the middle at the same time. The traditional butt-jointed wooden boards are basically in the direction of applying force parallel to the work surface g1, because the direction of the butt-jointed mortise of the traditional board is basically parallel to the upper and lower sides of the wooden board, and is also basically parallel to the work surface g1. It is impossible to apply pressure to the upper and lower sides of the wooden board for assembly as in the present invention; Figure 5 As shown, the "vertical...pressure" can be pressure in a direction close to vertical, that is, pressure can be applied downward from the direction of Z3 or perpendicular to the direction of Z6. Pressure applied downward from any direction between Z3 and Z6 can achieve basically the same purpose. The angle J between Z3 and Z6 is generally designed to be between 15 and 30 degrees, usually 20 degrees. Pressure applied downward from any direction between Z3 and Z6 is basically close to vertical downward pressure, which facilitates assembly. The "vertical pressure" and "close to vertical pressure" described in the assembly scheme of this scheme elsewhere in this patent document have the same meaning as described here and will not be repeated.

[0095] Of course, the prior arts 8, 11, 13, 15, and 16 can also be butt-jointed by vertical pressing, which is a completely vertical butt-jointed structure, but because it is different from the structure of the present invention, it will bring other problems. For example, if the height or depth of the mortise and tenon is not accurately matched (it is difficult to process into an ideal equal length or depth), it is difficult to completely flatten, and it will be easy to over-press or under-press, that is, it is difficult to flatten. Because if the tenon is too long, it will not be pressed in, forming an under-pressed state, and it will obviously not be flattened; and if the tenon is too short, even if it is flattened during assembly, when in use, due to vertical pressure (such as the vertical force generated by people walking on the wooden floor), the tenon board will be over-pressed and uneven. The mortise and tenon of the present invention can be flattened even when the height or depth of the mortise and tenon do not need to be so precisely matched. It is only necessary to make the length of the tenon equal to the corresponding mortise depth or the tenon slightly shorter (this processing is definitely easier). Once the mortise depth is equal or the tenon is slightly shorter, the two boards can definitely be flattened during assembly. Even if the tenon is slightly shorter, it is difficult to form over-pressure during use because the extension direction of the mortise forms an angle of about 20 degrees with the vertical pressure J, and can withstand greater pressure. Usually, it is difficult for people to press the tenon in again and make the board surface uneven when walking on the floor.

[0096] The traditional direction of applying force is parallel to the work surface g1, which will bring many problems. The process is complicated and the force used for docking cannot be too great, otherwise the mortise may be crushed. Because the thickness of the wooden board is generally not large, the contact area under pressure is small, and strong pressure is easily applied to directly squeeze the mortise and break it. On the other hand, it is particularly important that it is difficult to ensure the flatness of both sides of the docking board, because the applied pressure is parallel to the board surface, and it is impossible to control the board surface to be uniformly flat from top to bottom. However, the present invention can use a lot of force by pressing and assembling up and down, generally using mechanical pressing. Even if there is a relatively large interference fit, it can be squeezed in, because the two boards are placed on the platform and pressed, and can be pressed hard. On the other hand, after pressing, the upper and lower planes (P1, P2) of the two boards are in close contact with the base surface (g1, g2), and the interface of the two wooden boards is pressed against the same plane, so that the joint of the entire board is in a flat state. Since the prior art (except prior art 8, 11, 13, 15, 16, the defects of prior art 8, 11, 13, 15, 16 have been described above) is difficult to achieve splicing by a plane pressing method that applies force close to a vertical table surface (close to a vertical wooden board surface), the two surfaces of the spliced ​​board cannot automatically become consistently flat. If a flat spliced ​​board is required, additional processing is required to make it flat.

[0097] When the splicing panels of the present invention are butt-jointed, if a plurality of small panels are to be assembled into a large wardrobe, table or other panel, mechanical batch pressing is generally adopted; if used as indoor wooden flooring, workers generally press and assemble them directly up and down on site.

[0098] The thickness of the interference fit (d1, d2, d3, d4) of the wooden board is generally designed to be 1 to 2 mm. Of course, it can also be designed to any thickness according to needs. Generally, the thickness of the interference fit (d1, d2, d3, d4) is designed to be 5 to 15% of the corresponding thickness (r1, r2, r3, r4), usually 10%. This can ensure the overall bending fit of the tenon.

[0099] The "overall bending (or twisting)" of the tenon (and similar expressions) described in the present invention refers to the bending or twisting deformation of at least one section, such as the front section, middle section, rear section, or all of the tenon as a whole, rather than just the bending or twisting deformation of the surface of the tenon. In other words, the "overall bending (or twisting)" of the tenon (and similar expressions) described in the present invention refers to the bending or twisting deformation of at least one section, such as the front section, middle section, rear section, or all of the tenon from the surface to the center axis after installation relative to before installation. This is the inventive point particularly emphasized in the present invention.

[0100] In the present invention, the first mortise 1 on the first wooden board A and the third tenon 5 on the second wooden board B are in an interference fit relationship, and the fourth mortise 8 on the second wooden board B and the second tenon 4 on the first wooden board A are in a gap fit relationship. When both exist at the same time, the second tenon 4 on the first wooden board A after being pressed together (i.e. after the two wooden boards are assembled) will bend (twist) and deform toward the middle (such as Figure 6-8As shown in the figure, because the outer side of the second tenon 4 of the first wooden board A is an interference fit, and the inner side (i.e., the side close to the middle of the wooden board) is a clearance fit, the second tenon 4 of the first wooden board A is subjected to unbalanced forces on both sides and will naturally bend or twist toward the side with smaller forces. This will cause the second tenon 4 of the first wooden board A to be in a state of distortion and deformation for a long time, forming a large distortion tension, which is what is traditionally referred to as the second tenon 4 of the first wooden board A being "stuck in the fourth mortise 8 on the second wooden board B. This "stuck in the middle" state has a better effect than an interference fit, because after the traditional interference fit, as the size of the mortise and tenon surface deforms, the fitting force between them will gradually decrease, because the traditional interference fit is ultimately an interference fit, and the part that is usually only deformed at 1 to 2 mm thickness of the mortise and tenon surface to form a "clamping" effect, and this "clamping" effect is only caused by a local tension. That is to say, with the traditional interference fit, the interference degree on both sides of the tenon is consistent, and the pressure on both sides will be in basic balance. Then the entire tenon will not be deformed as a whole, and will not bend to one side as a whole. Therefore, its tension only comes from the tension generated by the 1-2 mm deep deformation of the wooden board. That is, when the forces on both sides are equal, the main part in the middle of the tenon will not be deformed, resulting in very limited durability of the tension between the entire tenon and the mortise. However, in the present invention, the interference fit on both sides of the tenon are designed to be inconsistent, that is, after assembly, the forces on both sides are inconsistent. In the absence of a balanced force support on the other side, the tenon will naturally bend to the side with no support or less support. Note that this bending is the bending of the entire tenon to one side, rather than the bending or deformation of its local surface to one side. This is a significant difference between the present invention and any prior art of wooden board splicing. Therefore, the tension formed by this deformation can be very large, while the tension formed by the distortion of the entire tenon is difficult to reduce or disappear, and the durability of the firmness after splicing is greatly improved. The inventor's long-term experimental results show that the interference match and the gap match are arranged alternately, that is, there is a difference in the interference fit on both sides of the second tenon 4 designed as the first wooden board A, resulting in a difference in pressure on both sides, causing the second tenon 4 of the first wooden board A to form an overall bending or twisting force after assembly, which is much stronger than all tenons designed to be balanced interference matches on both sides, and the firmness can also last longer.

[0101] Furthermore, the matching relationship between the first mortise 1 on the first wooden board A and the third tenon 5 on the second wooden board B is an interference fit relationship, and there will also be the firmness advantage brought by the interference fit in the traditional sense, but this is not the focus of the present invention and will not be elaborated here.

[0102] Similarly, "when the third mortise 7 on the second wooden board B of the present invention and the first tenon 3 of the first wooden board A are in an interference fit relationship, and the second mortise 2 on the first wooden board A and the fourth tenon 6 of the second wooden board B are in a gap matching relationship at the same time," and "when the first mortise 1 on the first wooden board A of the present invention and the third tenon 5 of the second wooden board B are in an interference fit relationship, and the fourth mortise 8 on the second wooden board B and the second tenon 4 of the first wooden board A are in a gap matching relationship at the same time," have a similar structural relationship and also have a similar effect, namely, it will cause the fourth tenon 6 of the second wooden board B to bend to one side as a whole to form a strong and lasting bending or torsional tension. The completely identical or similar relationships and effects have been described in detail above and will not be repeated here.

[0103] The theory and concept that the difference in the interference on both sides of the second tenon 4 of the first wooden board A and the fourth tenon 6 of the second wooden board B causes them to bend to one side as a whole and form a strong and lasting bending or twisting tension can be further improved, and the theory can be further generalized and unified, and all belong to the protection scope of the present invention. The width (r1+d1) of the third tenon 5 of the second wooden board B is wider than the width r1 of the first mortise 1 of the first wooden board A by d1, and because the width r4 of the second tenon 4 of the first wooden board A is smaller than the width (r4+d4) of the fourth mortise 8 of the second wooden board B by a width d4, when assembled, the second tenon 4 of the first wooden board A will bend a distance d1 toward the middle direction (i.e., toward the second mortise 2 on the first wooden board A), that is, the second tenon 4 of the first wooden board A is "squeezed on one side and empty on the other side", and it will naturally bend toward the empty side under the pressure of assembly; Similarly, because the width of the first tenon 3 of the first wooden board A (r3+d3) is wider than the width r3 of the third mortise 7 of the second wooden board B by d3, and the width r2 of the fourth tenon 6 of the second wooden board B is smaller than the width of the second mortise 2 of the first wooden board A (r2+d2) by a width d2, when assembled, the fourth tenon 6 of the second wooden board B will bend toward the middle (i.e., toward the fourth mortise 8 on the second wooden board B) by a distance d3, that is, the fourth tenon 6 of the second wooden board B is "squeezed on one side and empty on the other side", and it will naturally bend toward the empty side under the pressure of assembly. And because the second tenon 4 of the first wooden board A is adjacent to the fourth tenon 6 of the second wooden board B, a gap with a width of d5 will be left between the second tenon 4 of the first wooden board A and the fourth tenon 6 of the second wooden board B (such as Figure 6-8 as shown).

[0104] like Figure 6-8 As shown, there is the following relationship between the widths:

[0105] d2+d4=2*d5+d1+d3 (e.g. Figure 8 shown);

[0106] That is, d5=(d2+d4-d1-d3) / 2;

[0107] If d2=d4,d1=d3, then d5=d2-d1 or d5=d4-d1 or d5=d2-d3 or d5=d4-d3.

[0108] To simplify the description, the following only considers the analysis of the case where d2=d4, d1=d3. The principles for other cases are the same. A person skilled in the art can undoubtedly infer the situations arising from other cases based on the principles of the present invention, and no further details will be given here.

[0109] When d4>d1, that is, d5=d4-d1>0, an actual gap d5 will appear on the middle side of the second tongue 4 of the first wooden board A after splicing ("gap d5" and "gap with a width of d5" have the same meaning, the same below, such as Figure 8 As shown), similarly, an actual gap d5 will appear on the middle side of the fourth tenon 6 of the second wooden board B. This is a symmetrical relationship. The description of the symmetrical relationship will be omitted or briefly given below, and one side of the symmetrical relationship will be mainly described.

[0110] When d4=d1, that is, d5=d4-d1=0, the second tenon 4 of the first wooden board A and the fourth tenon 6 of the second wooden board B just touch each other on the middle side after splicing, and the middle gap d5 becomes in contact state, that is, d5=0, and will not be subject to contact force. This is a better effect, because it will not affect the tension formed by the distortion of the second tenon 4 of the first wooden board A and the fourth tenon 6 of the second wooden board B. At the same time, there is no gap in the middle of the entire structure, and secondary deformation can be effectively prevented.

[0111] When d4 < d1, that is, d5 = d4 - d1 and d5 < 0. At this time, an interference fit is formed on both sides of the second tenon 4 of the first wooden board A and the fourth tenon 6 of the second wooden board B. The interference fit on the side closer to the middle will offset part of the tension formed on the outer side. Originally, when d4 >= d1, the second tenon 4 of the first wooden board A could undergo a maximum bending deformation of d1. Now, when d4 < d1, the interference on the middle side will offset the bending deformation of the second tenon 4 of the first wooden board A by d1 - d4. Therefore, the actual bending deformation that the second tenon 4 of the first wooden board A can undergo here is d1 - (d1 - d4) = d4. Similarly, the bending deformation that the fourth tenon 6 of the second wooden board B can undergo is also d4. If d4 >= 0, the torsional deformation of the second tenon 4 of the first wooden board A decreases, reducing the torsional tension. However, the interference degree on the outer side of the second tenon 4 of the first wooden board A (the concepts of interference amount, interference force, etc. are the same hereinafter) is still greater than that on the middle side, and the second tenon 4 of the first wooden board A will still bend towards the middle to form a certain tension. When d4 < 0 and -d4 > d1, d4 < 0 indicates that the width (r4 + d4) of the fourth mortise 8 of the second wooden board B is less than the width r4 of the second tenon 4 of the first wooden board A. At this time, interference fits exist on both sides of the second tenon 4 of the first wooden board A. -d4 > d1 means that the interference degree on the right side (the middle side, viewed from the orientation of Figure 4 , 6 ) of the second tenon 4 of the first wooden board A has exceeded the interference degree on its left side. The second tenon 4 of the first wooden board A will bend to the left instead of bending to the right as described above. However, as long as a wooden board docking structure and method in which the tenon is forced to bend towards one side under stress are within the protection scope of the present invention. If -d4 = d1, at this time, the interference degree on the outer side of the second tenon 4 of the first wooden board A is equal to the interference degree on the middle side, and the second tenon 4 of the first wooden board A will not bend towards any side, and no bending tension will be formed. It is just a simple interference fit relationship, which is not the main technical solution pursued by the present invention. The technical solution pursued by the present invention is that there is a difference in the interference degrees of the two outer sides of the tenon, resulting in the overall bending of the tenon towards one side, and thus a certain tension is formed outward by the whole tenon.

[0112] The present invention can also be designed in other forms, such that the interference amount on at least one side of the tenon is greater than that on the other side, resulting in overall torsion after installation and forming a large long-term deformation tension.

[0113] Of course, to achieve the purpose of the present invention by designing a difference in the interference amounts on both sides of the tenon, the difference in the interference amounts can be achieved by inconsistent widths on both sides (such as Figure 4-6As shown); it can also be achieved by the difference between the spacing between the tenons and the spacing between the mortises, but the spacing difference is essentially a width difference, because the spacing body formed between the two mortises is essentially a "tenon", and the spacing between the two mortises is essentially the width of the "tenon", so that the corresponding tenon is twisted or bent to one side after installation, forming a long-term deformation tension, which is also a method of the present invention. For example, Figure 4 As shown, it can be designed that the distance d8 between the outer wall of the third tenon 5 on the second wooden board B and the outer wall of the fourth tenon 6 on the second wooden board B is wider by the thickness of d3 than the distance d6 between the outer wall of the first mortise 1 on the first wooden board A and the outer wall of the second mortise 2 on the first wooden board A. In this way, after assembly, as long as the width of the second mortise 2 of the first wooden board A is wider than the width of the fourth tenon 6 of the second wooden board B by the thickness of d2, the fourth tenon 6 will bend or twist toward the middle side under the lateral pressure of the outer wall of the second mortise 2. The specific size and degree of bending depends on the specific size of the thickness values ​​d2 and d3. In this way, the same technical effect brought about by the corresponding situation of the interference fit mentioned above in the present invention can be achieved, and the specific situation will not be repeated. Similarly, it can also be designed that the outer wall of the first tenon 3 on the first wooden board A and the second tenon 2 on the first wooden board A The spacing d7 between the outer walls of the strips 4 is wider than the spacing d9 between the outer walls of the third mortise 7 on the second wooden board B and the outer walls of the fourth mortise 8 on the second wooden board B by the thickness of d1. Thus, after assembly, as long as the width of the fourth mortise 8 on the second wooden board B is wider than the width of the second tenon strip 4 on the first wooden board A by the thickness of d4, the second tenon strip 4 on the first wooden board A will bend or twist toward the middle side under the lateral pressure of the outer walls of the fourth mortise 8 on the second wooden board B. The specific size and degree of the bending depends on the specific size of the thickness values ​​d2 and d3. Therefore, the clamping structure formed by the unequal spacing between multiple mortise and tenon joints (which may be multiple discontinuous tenon strips or mortise grooves) can also achieve the same technical effect of the overall twisting or bending deformation of the tenon strip caused by the corresponding situation of the interference fit mentioned above in the present invention. There may be various similar situations, which will not be repeated here.

[0114] Due to the above advantages of the present invention, the present invention does not need to be fixed with glue, and the structure after assembly is very firm, strong, and durable.

[0115] The mortise and tenon structures (i.e., the mortise and tenon structures) at the ends of the first wooden board A and the second wooden board B that are connected to each other can be completely identical or symmetrical, that is, they can satisfy the following dimensional relationship: r1=r3, r2=r4; to ensure the consistency and simplicity of production, only one mold needs to be opened during production, and there is no need to open molds for the first wooden board A and the second wooden board B separately. When the mortise and tenon structures at the ends of the first wooden board A and the second wooden board B that are connected to each other are completely identical or symmetrical, the present invention actually evolves into a wooden board with one structure, that is, only one structure of wooden boards needs to be produced, and they can be infinitely spliced ​​with each other, that is, the present invention needs to protect a wooden board with one structure at the same time, that is, the first wooden board A or the second wooden board B are independently protected, and any kind of wooden board is within the protection scope of the present invention. When the mortise and tenon structures of the first wooden board A and the second wooden board B are exactly the same or symmetrical, the present invention actually evolves into a wooden board of one structure. Therefore, the corresponding matching relationship of the mortise and tenon structures between the two wooden boards evolves into the matching relationship of the self-structure of the first wooden board A or the second wooden board B (collectively referred to as wooden boards). Taking the first wooden board A as an example, its internal self-structure matching relationship is: the first mortise 1 on the first wooden board A and the first tenon strip 3 on the first wooden board A are designed to be in a matching relationship (also called a matching relationship, which is actually a corresponding relationship. To simplify the description, they are uniformly called matching relationships, the same below), that is, the first mortise 1 on the first wooden board A and the first tenon strip 3 on the first wooden board A have a matching relationship. The so-called matching relationship means that a mortise of the same size as the first mortise 1 on the first wooden board A can be used to install the first tenon strip 3 on the first wooden board A, the same below; similarly, the second mortise 2 on the first wooden board A and the second tenon strip 4 on the first wooden board A have a matching relationship; obviously, other width relationships and spacing relationships are also changed from the relationship between the first wooden board A and the second wooden board B to the corresponding relationship inside the first wooden board A, and the specific relationship comparison will not be repeated. Similarly, the corresponding spacing relationship of the mortise and tenon structure between the original two wooden boards (such as d6, d7, d8, d9) becomes the corresponding spacing relationship in the structure of the first wooden board A or the second wooden board B (collectively referred to as wooden boards). The specific spacing relationship will not be repeated, because it can refer to the replacement method of the matching relationship mentioned above, and the corresponding spacing relationship in the structure of the wooden board itself can be obtained without creative labor. In this way, when selling, it is only necessary to make a wooden board with such a structure. Wooden boards with the same structure are docked with each other, which also forms the same effect of the present invention and is also within the scope of protection of the present invention. Of course, the second wooden board B can have the same internal structure, but the name is different. At this time, the first wooden board A and the second wooden board B are actually wooden boards with the same structure and belong to the same patent product.

[0116] Of course, the mortise and tenon of the two boards of the present invention can be made completely identical or completely symmetrical, just for the convenience of production and assembly, but it is not required to limit the technical concept of the present invention. The number and related widths of the mortise and tenon of the two boards of the present invention can be completely different or asymmetrical. As long as they can be spliced ​​with each other and mainly achieve strong and lasting structural force through the overall twisting or bending of the tenon, they all fall within the protection scope of the present invention.

[0117] In the present invention, there are more than two tenons on the same wooden board, and the overall bending of the tenons can be achieved through the synergistic action between the two tenons, that is, one or more tenons can be bent as a whole through the synergistic force between the two or more tenons, which all belong to the concept of the present invention.

[0118] Embodiment 2, as Fig. 9 As shown, a wooden board splicing structure is provided, which mainly differs from Example 1 in that: the corresponding mortise and tenon are provided with matching arc-shaped or circular arc-shaped chamfered structures, that is, the front end corner of the tenon is an arc chamfered structure, and the corresponding mortise is provided with an arc chamfered structure that can match it; other structural technical features are the same as Example 1.

[0119] Embodiment 3, as Fig.10 As shown, a wooden board splicing structure is mainly different from Example 1 or Example 2 in that: the corresponding mortise and tenon are provided with a dovetail-type matching structure; that is, the lateral width of the front end portion of the tenon protrusion is greater than the lateral width of its root portion (that is, larger outside and smaller inside), and the lateral diameter of the outlet portion of the mortise is smaller than the lateral diameter of its interior (that is, smaller outside and larger inside), and its size is adapted to the size of the corresponding tenon; other structural and technical features are the same as Example 1 or Example 2.

[0120] Embodiment 4, as Figure 11-17 As shown, a wooden board splicing structure is mainly different from the embodiment 1 or the embodiment 2 or the embodiment 3 in that the rear section of the second mortise 2 of the first wooden board A is deflected (bent or twisted) outward, and the bending or twisting angle c is about 1 to 8 degrees (such as Fig.12 , 17 As shown), ensure that the length L1 of the second mortise 2 deviating from the straight position is about 0.5 to 3 mm, that is, the second mortise 2 of the first wooden board A is divided into a first entrance section 21 and a first deflection section 22, the first entrance section 21 is located at the front end of the entrance of the second mortise 2, and is generally substantially parallel to the main body direction of the adjacent first tenon 3 (that is, the central axis Z3 of the first entrance section 21 is parallel or substantially parallel to the central axis Z4 of the first tenon 3, as shown in FIG. Figure 1 , 11 , 12), the first deflection section 22 is located at the inner side of the second mortise 2, and the first deflection section 22 of the second mortise 2 is a mortise section that deflects and extends toward the first tenon 3 of the first wooden board A relative to the first entrance section 21.

[0121] Since the first deflection section 22 of the second mortise 2 of the first wooden board A is deflected toward the first tenon 3 of the first wooden board A, it is equivalent to hollowing out or digging out the inner side of the first tenon 3 of the first wooden board A near the root, causing the first tenon 3 of the first wooden board A to be in a "big head and small root" shape, that is, the first tenon 3 of the first wooden board A is in a big end and small inside shape, which also causes the first tenon 3 to be in a big head shape.

[0122] To further enhance the firmness, the outer wall of the entrance of the third mortise groove 7 of the second wooden board B is provided with a "closing structure" 71 (such as Fig.13 , 15 As shown), that is, the outer side wall of the second entrance section of the third mortise 7 of the second wooden board B is provided with a projection of 0.5 to 2 mm toward the middle (this is only the case of wooden boards with a thickness of 2 to 3 cm. If the thickness of the wooden board changes, and the material of the wooden board is different, this parameter will change accordingly, and under the guidance of the technical idea of ​​the present patent, the change of this parameter is roughly foreseeable or predictable, and can be obtained by a limited number of experiments, without the need for creative labor, so the parameters are not listed here one by one, the same below, the same above, and no further description is given), to achieve the place-taking effect of the first tenon 3 of the first wooden board A to be installed (such as Fig.13 , 15 As shown), after the first tenon 3 of the first wooden board A is installed, the first tenon 3 of the first wooden board A can be well pressed into the third mortise 7 of the second wooden board B, which is more helpful to prevent the first tenon 3 of the first wooden board A from falling out.

[0123] When the first wooden board A and the second wooden board B are installed and docked, under the action of the external installation thrust, the fourth tenon 6 of the second wooden board B is gradually inserted into the second mortise 2 of the first wooden board A. When the head of the fourth tenon 6 of the second wooden board B enters the first deflection section 22 of the second mortise 2 of the first wooden board A, due to the restriction of the first deflection section 22 of the second mortise 2, the front end of the fourth tenon 6 of the second wooden board B will deflect and deform (i.e., bend or twist) to one side of the first tenon 3 of the first wooden board A as the second mortise 2 of the first wooden board A is turned and restricted, and the first tenon 3 of the first wooden board A, which is slightly enlarged in shape, is tightly pressed into the third mortise 7 of the second wooden board B (such as Fig.16 , 17 As shown); at the same time, because the outer side wall of the second entrance section of the third mortise 7 of the second wooden board B is provided with a closing structure 71 extending toward the middle, the first tenon 3 of the first wooden board A will be more firmly pressed in the third mortise 7 of the second wooden board B and will not fall out.

[0124] Similarly, the fourth mortise 8 of the second wooden board B is also divided into a second entrance section 81 and a second deflection section 82. The second deflection section 82 is deflected toward the third tenon 5 relative to the second entrance section 81. The first mortise 1 of the first wooden board A also has a closing structure similar to the above, that is, the fourth mortise 8 of the second wooden board B has the same or symmetrical structure as the second mortise 2 of the first wooden board A, and has the same or similar effects and functions, and the specific situation needs no further elaboration.

[0125] After the first wooden board A and the second wooden board B are installed (that is, in the splicing structure in which the first wooden board A and the second wooden board B are butt-jointed and assembled), the fourth tenon 6 of the second wooden board B can firmly press the first tenon 3 of the slightly enlarged first wooden board A into the third mortise 7 of the second wooden board B; the second tenon 4 of the first wooden board A can also firmly press the third tenon 5 of the slightly enlarged second wooden board B into the first mortise 1 of the first wooden board A, forming a "double-locking structure". When the first tenon 3 of the first wooden board A and the third tenon 5 of the second wooden board B will not be pulled out or fall out, a greater torque effect is formed (that is, the first tenon 3 and the third tenon 5 are locked on both sides at the same time and will not fall out), forming a good synergistic effect, improving the torsion and bending resistance of the entire spliced ​​board, and preventing the two wooden boards from falling out of each other. In addition, the second tenon 4 and the fourth tenon 6 are respectively installed in the fourth mortise 8 and the second mortise 2 by being bent (or twisted) as a whole, and also have all the functions and advantages of the "dead" state described in Example 1. Before installation, the fourth tenon 6 of the second wooden board B does not have a deflection structure corresponding to the first deflection section 22 of the second mortise 2 of the first wooden board A. This will inevitably cause the fourth tenon 6 of the second wooden board B to undergo deflection deformation after installation, that is, an overall bending deformation or twisting deformation relative to that before installation, that is, the fourth tenon 6 undergoes an overall bending deformation or twisting deformation before installation, which is an important structure for forming stable and lasting high tension; similarly, the second tenon 4 also has the same structural principle, which will not be repeated here. Therefore, when the first tenon 3 and the third tenon 5 are firmly stuck in the third mortise 7 and the first mortise 1 by the fourth tenon 6 and the second tenon 4 respectively, and the second tenon 4 and the fourth tenon 6 are respectively stuck in the fourth mortise 8 and the second mortise 2, each component achieves a combined effect of self-locking and interlocking, which can ensure that the butted wooden boards are very stable and firm without the need for sharpening, gluing, or cross bolts.

[0126] Other structural and technical features are the same as those of Example 1, Example 2 or Example 3.

[0127] Embodiment 5, as Fig.18 As shown, a wooden board splicing structure is mainly different from Example 1 or Example 2 or Example 3 or Example 4 in that the first wooden board A is provided with four mortises and four tenons; the second wooden board B is provided with four matching tenons and four mortises.

[0128] There are some alternative forms of the design of the difference in interference between multiple mortises and multiple tenons. For example, there may be a difference in spacing between several tenons or mortises so that the interference exists between several tenons or mortises, rather than just between adjacent tenons or mortises. For example, in a splicing structure with four tenons and four mortises, the interference on both sides of the second and third tenons on the same wooden board are equal, while the interference on both sides of the first and fourth tenons are not equal. In this way, the first tenon on the same wooden board may be twisted or the fourth tenon may be bent, while the two middle tenons may not necessarily be twisted or bent, which is still within the scope of protection of the present invention.

[0129] Other structural and technical features are the same as those of Example 1 or Example 2 or Example 3 or Example 4.

[0130] Of course, it is also possible that the same wooden board is provided with three mortises and three tenons, or five mortises and five tenons, etc. This should be designed according to the thickness of the wooden board and the structural strength requirements, and it is still within the scope of protection of the present invention.

[0131] Embodiment 6, as Figure 4-8 As shown in , 11, and 15, a spliced ​​board includes at least two wooden boards (A, B), and a matching wooden board splicing structure of Example 1 or Example 2 or Example 3 or Example 4 or Example 5 is provided between two adjacent wooden boards. Example 6 is essentially the inevitable product of the application of Example 1 or Example 2 or Example 3 or Example 4 or Example 5. The spliced ​​board can be used to make furniture such as wardrobes, tables, and stools like "original wood boards", and can also be used for paving plots. It adopts industrialized splicing and is fast. When used, it is flat (beautiful), strong, firm and durable.

[0132] Embodiment 7, a method for splicing wooden boards, comprising a first wooden board and a second wooden board;

[0133] The first wooden board is provided with two or more mortises and / or tenons, and the second wooden board is provided with two or more tenons and / or mortises matching with the two or more mortises and / or tenons on the first wooden board, that is, at least one wooden board is provided with two or more tenons, and the other wooden board is provided with two or more tenons matching with the two or more tenons;

[0134] That is, one mortise strip can be formed between two adjacent mortises on the same wooden board (the first wooden board A or the second wooden board B, the same below), and one mortise strip can be formed between two adjacent mortise strips on the same wooden board;

[0135] Through one of the following method steps or any combination of the following method steps, at least one tenon of the first wooden board A and / or the second wooden board is integrally bent or twisted and installed in the corresponding mortise groove to form a structure in which the corresponding tenon is integrally bent or twisted in the corresponding mortise groove and is in a high tension connection state:

[0136] Step 1:

[0137] The spacing and width of each mortise and tenon are designed so that there is a difference in the spacing or width between at least one pair of matching mortise and tenon, and after matching and docking, the extrusion pressure on the two sides of at least one of the tenons is unequal, forming a pressure difference on the two sides, causing at least the tenon to bend or twisted as a whole, and causing at least one tenon to be bent or twisted and stuck in the corresponding mortise.

[0138] The squeezing pressure on the two sides of the tenon strip can also be the pressure difference on both sides obtained by the spacing difference or width formed by hollowing out the mortise groove or tenon strip on one side;

[0139] Step 2: By designing that the spacing between the plurality of tenons and the corresponding mortise grooves is unequal, at least one tenon is formed to be bent or twisted as a whole and installed in the corresponding mortise groove. Figure 4 As shown, it can be designed that the distance d8 between the outer wall of the third tongue 5 on the second wooden board B and the outer wall of the fourth tongue 6 on the second wooden board B is wider than the distance d6 between the outer wall of the first mortise 1 on the first wooden board A and the outer wall of the second mortise 2 on the first wooden board A by the thickness of d3. In this way, after assembly, it is sufficient that the width of the second mortise 2 of the first wooden board A is wider than the width of the fourth tongue 6 of the second wooden board B by the thickness of d2, that is, there is room for bending on the other side of the fourth tongue 6; similarly, it can also be designed that the distance d7 between the outer wall of the first tongue 3 on the first wooden board A and the outer wall of the second tongue 4 on the first wooden board A is wider than the distance d9 between the outer wall of the third mortise 7 on the second wooden board B and the outer wall of the fourth mortise 8 on the second wooden board B by the thickness of d1;

[0140] In addition, when there are multiple (more than two) matching mortise and tenon strips, a synergistic effect is formed, and the mortise and tenon strip matching structure is not independent of each other, which will also cause the tenon strip to bend or twist to one side. In essence, it is a technical solution that causes the tenon strip to bend or twist to one side due to the corresponding spacing difference;

[0141] Step 3: By designing at least one mortise with a deflection structure, the corresponding tenon strip is forced to be bent or twisted as a whole after installation in the corresponding mortise strip. For example: the second mortise strip 2 of the first wooden board A is divided into a first entrance section 21 and a first deflection section 22, the first entrance section 21 is located at the entrance position of the second mortise strip 2, the first deflection section 22 is located at the inner position of the second mortise strip 2, and the first deflection section 22 of the second mortise strip 2 is a mortise strip section deflected toward the first tenon strip 3 of the first wooden board A relative to the first entrance section 21; the fourth mortise strip 8 of the second wooden board B is also divided into a second entrance section 81 and a second deflection section 82, and the second deflection section 82 is deflected toward the third tenon strip 5 relative to the second entrance section 81.

[0142] The above steps 1, 2, and 3 do not represent a chronological order. Each step is a complete innovative method and is an innovative point of the present invention. They can be adapted independently, can be sequential steps, can not be adapted in the above order, and can be adapted in any combination with each other.

[0143] The mortise and tenon of the present invention can be arranged in various directions on the same wooden board at the same time, so as to be connected with another wooden board having a corresponding mortise and tenon structure. They are usually arranged on the left and right sides (or the upper and lower sides) of the same board to achieve extension and splicing in two directions; of course, they can also be arranged in four directions of the same board to achieve splicing and extension in four directions. These are all simple technical extensions of the present invention or simple applications or simple transformations of the technology of the present invention, and do not have much innovative ideas and cannot escape the protection of the present invention.

[0144] The tenon described in the present invention is not limited to a strip-shaped structure, but may be a tenon-shaped structure of other shapes, that is, including all tenons in strip-shaped, rod-shaped and other shapes, all of which fall within the protection scope of the present invention; the mortise described in the present invention is not limited to a slot-shaped hole, but also includes holes in long holes, square holes and other shapes. The mortise described in the present invention includes mortise holes of various shapes that can cooperate with the tenon, all of which fall within the protection scope of the present invention.

[0145] The above is only one of the preferred embodiments of the present invention, and does not limit the patent scope of the present invention. The present invention is not limited to the above-mentioned specific structure. All simple technical replacements, equivalent structural transformations, or direct / indirect applications in other related technical fields made under the concept of the present invention using the contents of the present invention specification and drawings are included in the patent protection scope of the present invention.

[0146] However, the present invention does not limit the material. The wooden board described in the present invention is only a name for a board. The wooden board described in the present invention is not limited to natural wood boards. It only illustrates that the technology of the present invention is better adapted to wooden boards. It is also applicable to materials with good elasticity and good compressibility such as plastic boards and artificial particle boards. Boards made of these materials with the same structure as the present invention also fall within the scope of protection of the present invention. Of course, the present invention can also be applied to metal plates. Metal plates with the same structure as the present invention also fall within the scope of protection claimed by the applicant. Using the structure of the present invention on metal plates also constitutes an infringement of the invention.

Claims

1. A wooden board splicing structure, comprising a first wooden board A and a second wooden board B; wherein: The first wooden board A is provided with more than two mortise grooves and tenons on at least one end, i.e., a mortise and tenon structure; the second wooden board B is provided with more than two tenons and mortise grooves matching the mortise grooves and tenons on the first wooden board A on at least one end; the matching relationship between the tenons and mortise grooves enables the first wooden board A and the second wooden board B to be connected to each other through the tenons and tenons to form an integrated structure; in the spliced ​​structure in which the first wooden board A and the second wooden board B are butt-jointed and assembled, at least one tenon on the first wooden board A and / or the second wooden board B is installed in the corresponding mortise groove in a deformed state of overall bending; The overall bending structure of the tenon is a structure formed by the unbalanced interference fit between the tenon and the mortise, or a structure formed by a clamping installation formed by unequal spacing between multiple tenons and corresponding mortises, or a structure formed by providing a deflection structure in the mortise to force the corresponding tenon to form after installation.

2. The wooden board splicing structure according to claim 1 is characterized in that: The mortise and tenon structure of the first wooden board A is the same as the mortise and tenon structure of the second wooden board B.

3. The wooden board splicing structure according to claim 1 or 2, characterized in that: The first wooden board A is provided with two mortises and two tenons on at least one end, namely, a first mortise (1), a second mortise (2), a first tenon (3), and a second tenon (4); the second wooden board B is provided with a third tenon (5), a fourth tenon (6), a third mortise (7), and a fourth mortise (8) on at least one end, which are matched with the first mortise (1), the second mortise (2), the first tenon (3), and the second tenon (4) on the corresponding end of the first wooden board A, namely, the first mortise (1) on the first wooden board A and the third tenon (5) on the second wooden board B are in a matching relationship, the second mortise (2) on the first wooden board A and the fourth tenon (6) on the second wooden board B are in a matching relationship, the first tenon (3) on the first wooden board A and the third mortise (7) on the second wooden board B are in a matching relationship, and the second tenon (4) on the first wooden board A and the fourth mortise (8) on the second wooden board B are in a matching relationship, and the matching relationship enables the first wooden board A and the second wooden board B to be mutually connected to form an integrated structure through the tenon and mortise structure.

4. The wooden board splicing structure according to claim 3 is characterized in that: The second mortise (2) of the first wooden board A is divided into a first entrance section (21) and a first deflection section (22), wherein the first entrance section (21) is located at the entrance position of the second mortise (2), and the first deflection section (22) is located at the inner side of the second mortise (2), and the first deflection section (22) of the second mortise (2) is a mortise section that deflects toward the first tenon (3) of the first wooden board A relative to the first entrance section (21); the fourth mortise (8) of the second wooden board B is divided into a second entrance section (81) and a second deflection section (82), and the second deflection section (82) deflects toward the third tenon (5) relative to the second entrance section (81).

5. The wooden board splicing structure according to claim 4 is characterized in that: The outer wall at the entrance of the third mortise (7) of the second wooden board B is provided with a closing structure (71) extending toward the middle, and the outer wall at the entrance of the first mortise (1) of the first wooden board A is also provided with a closing structure.

6. The wooden board splicing structure according to claim 1 or 2, characterized in that: The main extension direction of each mortise and tenon on the first wooden board A and the second wooden board B forms an angle b of 60 to 80 degrees with the upper plane P1 or the lower plane P2 of the corresponding wooden board body.

7. The wooden board splicing structure according to claim 6 is characterized in that: The main extension direction of each mortise and tenon on the first wooden board A and the second wooden board B forms an angle b of 65 to 75 degrees with the upper plane P1 or the lower plane P2 of the corresponding wooden board body.

8. The wooden board splicing structure according to claim 3 is characterized in that: The matching relationship between the first mortise (1) on the first wooden board A and the third tenon (5) on the second wooden board B is an interference fit relationship, and the width of the third tenon (5) on the second wooden board B is wider than the width of the first mortise (1), that is, if the width of the first mortise (1) is r1, the width of the third tenon (5) is r1+d1; The matching relationship between the second mortise (2) of the first wooden board A and the fourth tenon (6) of the second wooden board B is a gap matching relationship, and the width of the second mortise (2) of the first wooden board A is wider than the width of the fourth tenon (6) of the second wooden board B, that is, if the width of the fourth tenon (6) of the second wooden board B is r2, the width of the second mortise (2) is r2+d2; The matching relationship between the third mortise groove (7) on the second wooden board B and the first tenon strip (3) of the first wooden board A is an interference fit relationship, and the width of the first tenon strip (3) of the first wooden board A is wider than the width of the third mortise groove (7) on the second wooden board B, that is, if the width of the third mortise groove (7) on the second wooden board B is r3, the width of the first tenon strip (3) of the first wooden board A is r3+d3; The matching relationship between the fourth mortise (8) on the second wooden board B and the second tenon (4) of the first wooden board A is a gap matching relationship, and the width of the fourth mortise (8) on the second wooden board B is wider than the width of the second tenon (4) of the first wooden board A, that is, if the width of the second tenon (4) of the first wooden board A is r4, the width of the fourth mortise (8) on the second wooden board B is r4+d4.

9. The wooden board splicing structure according to claim 8 is characterized in that: The width difference (d1, d2, d3, d4) of the mortise and tenon of each wooden board is 1 to 2 mm or the width difference (d1, d2, d3, d4) of the mortise and tenon of each wooden board is 5 to 15% of the corresponding mortise and tenon width (r1, r2, r3, r4).

10. The wooden board splicing structure according to claim 8, characterized in that: According to the different numerical relationships of the interferences of the wooden boards, there are the following structures: ①, when d2=d4, d1=d3, d4>d1, then d5=d2-d1 or d5=d4-d1 or d5=d2-d3 or d5=d4-d3; after splicing, an actual gap d5 will appear on one side of the middle of the second tongue (4) of the first wooden board A; an actual gap d5 will appear on one side of the middle of the fourth tongue (6) of the second wooden board B; ②, when d2=d4, d1=d3, d4=d1, then d5=d2-d1 or d5=d4-d1 or d5=d2-d3 or d5=d4-d3; after splicing, the second tenon (4) of the first wooden board A and the fourth tenon (6) of the second wooden board B are in contact with each other at the middle side, and the gap d5 in the middle is in contact, that is, d5=0, and there is no gap in the middle; ③. When d2 = d4, d1 = d3, and when d4 < d1, then d5 = d2 - d1 or d5 = d4 - d1 or d5 = d2 - d3 or d5 = d4 - d3, that is, d5 = d4 - d1, and d5 < 0; at this time, an interference fit is formed on both sides of the second tenon (4) of the first wooden board A and the fourth tenon (6) of the second wooden board B. The interference fit near the middle side will offset the bending deformation amount that the second tenon (4) of the first wooden board A can undergo towards the middle, and the offset is d1 - d4. The actual bending deformation amount that the second tenon (4) of the first wooden board A can undergo is d1 - (d1 - d4) = d4; the bending deformation amount that the fourth tenon (6) of the second wooden board B can undergo is also d4. If d4 >= 0, the second tenon (4) of the first wooden board A will still bend towards the middle to form a certain tension. If d4 < 0, d4 < 0 means that the width (r4 + d4) of the fourth mortise (8) of the second wooden board B is less than the width r4 of the second tenon (4) of the first wooden board A. At this time, an interference fit is formed on both sides of the second tenon (4) of the first wooden board A. If -d4 > d1, -d4 > d1, then the interference degree on the right side of the second tenon (4) of the first wooden board A has exceeded the interference degree on its left side, and the second tenon (4) of the first wooden board A will bend to the left.

11. The wooden board splicing structure according to claim 1 or 2, characterized in that: The corresponding mortise and tenon are provided with a matching arc chamfer structure, that is, the front end corner of the tenon is a chamfer structure, and the corresponding mortise is provided with a chamfer structure that can be matched with it; the corresponding mortise and tenon are also provided with a dovetail type matching structure.

12. A spliced ​​plate, characterized by: It includes the wooden board splicing structure described in any one of claims 1 to 11; the first wooden board A and the second wooden board B of the wooden board splicing structure are spliced into a whole through the tenon and mortise matching structure.

13. A method for splicing wooden boards, characterized by: It includes a first wooden board A and a second wooden board B; Two or more mortises and / or tenons are provided on the first wooden board A, and two or more tenons and / or mortises that are matched with the mortises and / or tenons provided on the first wooden board are provided on the second wooden board B; The first wooden board A and / or the second wooden board are installed in the corresponding mortises in a deformed state where at least one tenon is bent as a whole by one of the following methods or any combination of the following two or more methods: Method 1: By designing an unbalanced interference fit between the tenon and the mortise to form at least one tenon bent as a whole and installed in the corresponding mortise; Method 2: By designing unequal distances between multiple tenons and the corresponding mortises and installing them in a clamping manner to form at least one tenon bent as a whole and installed in the corresponding mortise; Method 3: By designing at least one mortise with a deflection structure to force the corresponding tenon to bend as a whole and be installed in the corresponding mortise after installation.

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