US-12624716-B2 - Coupling structure for board assembly

Abstract

A board coupling structure comprises of a first board and a second board. The first board and the second board are respectively formed with strip-shaped ribs and strip-shaped grooves that can be interlocked with each other. The strip-shaped rib can comprise at least one longitudinally extending arm and one more ore transversely extending arms. In particular, the one or more spaced apart transversely extending arms can increase the contact surface of the strip-shaped rib and the strip-shaped groove. Moreover, the connected boards do not need connectors.

Inventors

• Jinglei JIANG

Assignees

• YIXIANG BLOW MOLDING FURNITURE CO., LTD.

Dates

Publication Date

20260512

Application Date

20240701

Claims (7)

1. 1 . A board coupling structure, comprising: a first board ( 1 ) and a second board ( 2 ) each being respectively formed with a strip-shaped rib ( 11 ) and a strip-shaped groove ( 21 ) that can be inserted into each other, the first board ( 1 ) and the second board ( 2 ) being only movable relative to each other in the insertion direction, wherein the strip-shaped rib ( 11 ) comprises a longitudinally extending arm ( 111 ) with parallel sides extending outwards from a circumferential side ( 12 ) and at least two transversely extending arms ( 112 ) that are spaced apart on the same side of the longitudinally extending arm ( 111 ), wherein the strip-shaped groove ( 21 ) is disposed on the inner side wall of the second board ( 2 ), and the shape of the strip-shaped groove ( 21 ) matches the shape of the strip-shaped rib ( 11 ); and wherein one end of the strip-shaped groove ( 21 ) forms an opening in the insertion direction, and the other end is closed in the insertion direction.
2. 2 . The board coupling structure of claim 1 , wherein the longitudinally extending arm ( 111 ) and the circumferential side ( 12 ) are perpendicular to each other, and the transversely extending arm ( 112 ) and the longitudinally extending arm ( 111 ) are perpendicular to each other.
3. 3 . The board coupling structure of claim 1 , wherein the at least two transversely extending arms ( 112 ) are of different lengths.
4. 4 . The board coupling structure of claim 1 , wherein the at least two transversely extending arms ( 112 ) are of the same lengths.
5. 5 . The board coupling structure of claim 1 , wherein the strip-shaped groove ( 21 ) is disposed near the edge of the second board ( 2 ) and along the length direction of the edge.
6. 6 . The board coupling structure of claim 1 , wherein when the first board ( 1 ) and the second board ( 2 ) are interlocked, the first board ( 1 ) and the second board ( 2 ) are perpendicular to each other.
7. 7 . The board coupling structure of claim 1 , wherein the first board ( 1 ) and the second board ( 2 ) are rectangle or square boards.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS This application is a continuation application of a U.S. patent application Ser. No. 17/553,534, entitled “COUPLING STRUCTURE FOR BOARD ASSEMBLY”, filed on Dec. 16, 2021, which claims the priority of CN Patent Application No. CN2021112372255, entitled “COUPLING STRUCTURE FOR BOARD ASSEMBLY,” filed Oct. 20, 2021, which is incorporated herein by reference for all purposes. TECHNICAL FIELD The present subject matter is in the field of board construction. More particularly, embodiments of the present subject matter relate to a screw-free, plug-in connection structure for plastic boards. BACKGROUND Many existing of furniture are constructed by assembling multiple boards. In the assembly process of these furniture, screws are often required to connect and fix the boards, which is troublesome to install. For example, take the cabinet structure as an example: when assembling the cabinet, people often need to use a screw driver to install and fix the screws and other connectors on the bottom board, four side boards and cover board, so that the bottom board, side board and cover board can be put together. The process is not only time-consuming and laborious but also has low efficiency. In addition, when disassembling the cabinet, the screws must be removed one by one, which is also inconvenient. Moreover, when the cabinet is connected and fixed with screws, it is often necessary to reserve mounting holes on the boards when manufacturing them. For precise assembly, the position of these reserved mounting holes must be accurate. Otherwise, it would cause installation failure. Even more, some cabinets are equipped with embedded connectors in the reserved mounting holes. These embedded parts are often manually installed, resulting in low efficiency. Although the prior art has disclosed the plug-in structure with improved efficiency, the bite of these plug-in structures is low, and the structural reliability and stability need to be further improved. In addition, the contact area of the joint is not large enough, resulting in poor waterproof ability. In summary, the existing board connection structure needs to be further improved. SUMMARY OF THE INVENTION The present subject matter can solve the technical problem as described herein by providing a board coupling structure with a reliable structure and optimized stability in view of the present state of the art. The technical solution of the present subject matter to solve the afore-mentioned technical problems is: a board coupling structure that comprises a first board and a second board each being respectively formed with a strip-shaped rib and a strip-shaped groove that can be inserted into each other, the first board and the second board being only movable relative to each other in the insertion direction, wherein the strip-shaped rib comprises a longitudinally extending arm extending outwards from a circumferential side and a transversely extending arm extending laterally on at least one of the side walls of the longitudinal extending arm; and wherein the strip-shaped groove is disposed on the inner side wall of the second board, and the shape of the strip-shaped groove matches the shape of the strip-shaped rib. According to some embodiments, the longitudinally extending arm and the circumferential side are perpendicular to each other, and the transversely extending arm and the longitudinally extending arm are perpendicular to each other. According to some embodiments, one or more transversely extending arms are disposed on the side surfaces of the longitudinally extending arm, and there are at least two transversely extending arms that are spaced apart at intervals. As such, the multiple transversely extending arms can increase the contact area between the strip-shaped rib and the strip-shaped groove, thereby improving the stability and reliability of the board coupling structure. Furthermore, the multi-layer coupling structure can improve the waterproof performance of the board joint. According to some embodiments, one or more transversely extending arms are disposed on opposite sides of the longitudinally extending arm, and there are at least two transversely extending arms that are spaced apart at intervals. Accordingly, the spaced transversely extending arms on both sides of the longitudinal extension arm can further increase the contact areas between the strip-shaped rib and the strip-shaped groove, thereby further improving the structural stability and waterproof performance of the board coupling structure. According to some embodiments, the longitudinally extending arm and the transversely extending arm can jointly form a cross-shaped structure. The four different directions of the strip ribs can be engaged with the strip grooves, thereby effectively improving its' structural stability and waterproof performance. According to some embodiments, the longitudinally extending arm and the transversely extending arm can joint