Circuit board with hinge folding structure

Abstract

The invention discloses a circuit board with a hinge folding structure, which comprises a first circuit board and a second circuit board, a flexible circuit board is fixedly connected between the first circuit board and the second circuit board, and two hinges are symmetrically connected between the first circuit board and the second circuit board; the hinge comprises a first mounting groove formed in the upper side of the first circuit board, a second mounting groove corresponding to the first mounting groove is formed in the side wall of the upper side of the second circuit board, the first mounting groove is symmetrically and fixedly connected with two first fixing blocks, and a first hinge piece is fixedly connected between the two first fixing blocks. The problem that the flexible circuit board is damaged due to the fact that pulling force is concentrated on the flexible circuit board can be avoided, the connection stability of the folding circuit board is effectively improved, the service life of the folding circuit board is effectively prolonged, elements on the first circuit board and the second circuit board can be protected, and the service life of the folding circuit board is prolonged. And the use safety of the first circuit board and the second circuit board is improved.

Description

Technical Field

[0001] This invention relates to the field of circuit board technology, specifically to a circuit board with a hinged folding structure. Background Technology

[0002] Circuit boards, also known as printed circuit boards, miniaturize and visualize circuits. They play a crucial role in the mass production of fixed circuits and the optimization of electrical appliance layouts. Circuit boards have a wide range of applications in many fields. Some electronic devices with folding capabilities require connecting two folded circuit boards together. Current technology typically uses flexible circuit boards for this connection. However, this method has relatively poor strength. During folding, the flexible circuit board is subjected to significant tensile forces, which can damage it over time, affecting the stability of the circuit board's connectivity. Summary of the Invention

[0003] The purpose of this invention is to provide a circuit board with a hinged folding structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention provides a circuit board with a hinged folding structure, including a first circuit board and a second circuit board, wherein a flexible circuit board is fixedly connected between the first circuit board and the second circuit board, and two hinges are symmetrically connected between the first circuit board and the second circuit board.

[0006] The hinge includes a first mounting groove on the upper side of the first circuit board, and a second mounting groove corresponding to the first mounting groove on the side wall of the upper side of the second circuit board. Two first fixing blocks are symmetrically fixedly connected to the first mounting groove, and a first hinge component is fixedly connected between the two first fixing blocks. Two second fixing blocks are symmetrically fixedly connected to the second mounting groove, and a second hinge component is fixedly connected between the two second fixing blocks. A U-shaped groove is provided on the side of the first hinge component near the second hinge component. Two fixing holes communicating with the U-shaped groove are provided on the first hinge component, and the same fixing shaft is fixedly inserted into the two fixing holes. A shaft hole is provided on the second hinge component, and the fixing shaft passes through the shaft hole to the second hinge component.

[0007] Furthermore, slots are provided on the front and rear sidewalls of the first circuit board and the second circuit board. The slots are connected to support members. The support members include rubber strips that are movably inserted into the slots. Both ends of the rubber strips extend out of the slots. A first limiting sleeve and a second limiting sleeve are fixedly sleeved on the rubber strips.

[0008] Furthermore, each of the four corners of the upper surface of the flexible circuit board is provided with a first rivet hole, and the upper sidewalls of the first circuit board and the second circuit board are provided with a hidden groove. The flexible circuit board is located in two hidden grooves, and two second rivet holes corresponding to the first rivet holes are symmetrically provided in the hidden grooves. Rivets are riveted into the two corresponding first rivet holes and second rivet holes.

[0009] Furthermore, both the first fixing block and the second fixing block are provided with first threaded holes, and both the first circuit board and the second circuit board are provided with second threaded holes corresponding to the first threaded holes. Multiple second threaded holes are distributed in the first mounting groove and the second mounting groove, and locking screws are threaded into the first threaded holes and the second threaded holes.

[0010] Furthermore, both the first and second circuit boards have two pin holes symmetrically formed.

[0011] Furthermore, a limiting strip is fixedly connected inside the slot, and two limiting blocks are symmetrically fixedly connected to the side walls of the first limiting sleeve and the second limiting sleeve on opposite sides, with the distance between the upper and lower limiting blocks being less than the thickness of the limiting strip.

[0012] Furthermore, a first buffer pad is fixedly connected to the upper side wall of the first hinge component, and a second buffer pad is fixedly connected to the upper side of the second hinge component. The first buffer pad and the second buffer pad are made of rubber.

[0013] Furthermore, the flexible circuit board has multiple elliptical holes, which are evenly distributed on the flexible circuit board.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention, through the design of hinges, during installation, fixes two first hinge components in a first mounting groove on a first circuit board and two second hinge components in a second mounting groove on a second circuit board. The second hinge components are then inserted into U-shaped grooves on the first hinge components, aligning the fixing holes on the first hinge components with the shaft holes on the second hinge components. A fixing shaft is then inserted into the fixing hole and the shaft hole. Through the interference fit between the fixing shaft and the fixing hole, the fixing shaft is securely fixed within the fixing hole, thereby enabling the first and second hinge components to be rotatably connected together. This allows the first and second circuit boards to be hinged together. The two hinges securely connect the first and second circuit boards and distribute the tensile force generated when the first and second circuit boards are folded, preventing the tensile force from concentrating on the flexible circuit board and causing damage. This effectively improves the stability of the folded circuit board connection and extends its service life.

[0016] 2. The present invention, through the provided slot, support member, rubber strip, first limiting sleeve and second limiting sleeve, allows the support member to be stably locked in the slot during use. The support member provides support to the upper and lower sides of the first circuit board and the second circuit board, allowing the upper and lower sides of the first circuit board and the second circuit board to be suspended during installation. This protects the components on the first circuit board and the second circuit board and improves the safety of using the first circuit board and the second circuit board. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a partial structural schematic diagram of the present invention;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the first and second circuit boards;

[0021] Figure 5 for Figure 1 A partial structural diagram of the central hinge;

[0022] Figure 6 for Figure 1 A schematic diagram of the structure of the first hinge component;

[0023] Figure 7 for Figure 1 A schematic diagram of the structure of the second hinge component;

[0024] Figure 8 for Figure 1 A schematic diagram of the structure of the middle support component.

[0025] In the diagram: 1. First circuit board; 2. Second circuit board; 3. Flexible circuit board; 4. Hinge; 5. First mounting slot; 6. Second mounting slot; 7. First fixing block; 8. First hinge component; 9. Second fixing block; 10. Second hinge component; 11. U-shaped groove; 12. Fixing hole; 13. Fixing shaft; 14. Shaft hole; 15. Slot; 16. Support component; 17. Rubber strip; 18. First limiting sleeve; 19. Second limiting sleeve; 20. First rivet hole; 21. Hidden groove; 22. Second rivet hole; 23. Rivet; 24. First threaded hole; 25. Second threaded hole; 26. Locking screw; 27. Pin hole; 28. Limiting strip; 29. ​​Limiting block; 30. First buffer pad; 31. Second buffer pad; 32. Oval hole. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-8 The present invention provides a circuit board with a hinged folding structure, including a first circuit board 1 and a second circuit board 2, a flexible circuit board 3 fixedly connected between the first circuit board 1 and the second circuit board 2, and two hinges 4 symmetrically connected between the first circuit board 1 and the second circuit board 2.

[0028] The hinge 4 includes a first mounting groove 5 on the upper side of the first circuit board 1, and a second mounting groove 6 corresponding to the first mounting groove 5 on the side wall of the upper side of the second circuit board 2. Two first fixing blocks 7 are symmetrically fixedly connected to the first mounting groove 5, and a first hinge component 8 is fixedly connected between the two first fixing blocks 7. Two second fixing blocks 9 are symmetrically fixedly connected to the second mounting groove 6, and a second hinge component 10 is fixedly connected between the two second fixing blocks 9. A U-shaped groove 11 is provided on the side of the first hinge component 8 near the second hinge component 10. Two fixing holes 12 communicating with the U-shaped groove 11 are provided on the first hinge component 8, and the same fixing shaft 13 is fixedly inserted into the two fixing holes 12. A shaft hole 14 is provided on the second hinge component 10, and the fixing shaft 13 passes through the shaft hole 14 to penetrate the second hinge component 10.

[0029] In this embodiment, during installation, two first hinge components 8 are fixed in the first mounting groove 5 on the first circuit board 1, and two second hinge components 10 are fixed in the second mounting groove 6 on the second circuit board 2. The second hinge components 10 are inserted into the U-shaped groove 11 on the first hinge component 8, aligning the fixing hole 12 on the first hinge component 8 with the shaft hole 14 on the second hinge component 10. The fixing shaft 13 is inserted into the fixing hole 12 and the shaft hole 14. Through the interference fit between the fixing shaft 13 and the fixing hole 12, the fixing shaft 13 can be firmly fixed in the fixing hole 12, thereby enabling the first hinge component 8 and the second hinge component 10 to be rotatably connected together, thus enabling the first circuit board 1 and the second circuit board 2 to be hinged together. The two hinges 4 can firmly connect the first circuit board 1 and the second circuit board 2 together and can share the tensile force generated when the first circuit board 1 and the second circuit board 2 are folded, thus avoiding the problem of tensile force being concentrated on the flexible circuit board 3 and causing damage to the flexible circuit board 3. This effectively improves the stability of the folded circuit board connection and effectively improves the service life of the folded circuit board.

[0030] The first circuit board 1 and the second circuit board 2 have slots 15 on their front and rear sidewalls. The slots 15 are connected to support members 16. The support members 16 include rubber strips 17 that are movably inserted into the slots 15. Both ends of the rubber strips 17 extend out of the slots 15. A first limiting sleeve 18 and a second limiting sleeve 19 are fixedly sleeved on the rubber strips 17.

[0031] In the above embodiments, during use, the first limiting sleeve 18 and the second limiting sleeve 19 can stably lock the support member 16 into the slot 15. The support member 16 can support the upper and lower sides of the first circuit board 1 and the second circuit board 2, so that the upper and lower sides of the first circuit board 1 and the second circuit board 2 are suspended during installation, thereby protecting the components on the first circuit board 1 and the second circuit board 2 and improving the safety of the first circuit board 1 and the second circuit board 2.

[0032] The flexible circuit board 3 has first rivet holes 20 at each of the four corners of its upper surface. The sidewalls of the first circuit board 1 and the second circuit board 2 have hidden grooves 21. The flexible circuit board 3 is located in two hidden grooves 21. Two second rivet holes 22 corresponding to the first rivet holes 20 are symmetrically opened in the hidden grooves 21. Rivets 23 are riveted into the two corresponding first rivet holes 20 and second rivet holes 22.

[0033] In this embodiment, the rivets 23 can securely fix the flexible circuit board 3, thereby improving the stability of the connection between the flexible circuit board 3 and the first circuit board 1 and the second circuit board 2.

[0034] Both the first fixing block 7 and the second fixing block 9 are provided with a first threaded hole 24, and both the first circuit board 1 and the second circuit board 2 are provided with a second threaded hole 25 corresponding to the first threaded hole 24. Multiple second threaded holes 25 are distributed in the first mounting groove 5 and the second mounting groove 6. Locking screws 26 are threaded into the first threaded hole 24 and the second threaded hole 25.

[0035] In this embodiment, when installing the first hinge component 8 and the second hinge component 10, the first threaded hole 24 and the second threaded hole 25 are aligned, and the locking screw 26 is screwed into the first threaded hole 24 and the second threaded hole 25, thereby fixing the first fixing block 7 and the second fixing block 9, and thus quickly fixing the first hinge component 8 and the second hinge component 10, effectively improving the convenience and stability of hinge 4 installation.

[0036] Both the first circuit board 1 and the second circuit board 2 have two symmetrical pin holes 27.

[0037] In this embodiment, the provided pin hole 27 facilitates the fixing of the first circuit board 1 and the second circuit board 2, effectively improving the convenience of fixing and installing the first circuit board 1 and the second circuit board 2.

[0038] The slot 15 is fixedly connected to a limiting strip 28. The side walls of the first limiting sleeve 18 and the second limiting sleeve 19 on opposite sides are symmetrically fixedly connected to two limiting blocks 29. The distance between the upper and lower limiting blocks 29 is less than the thickness of the limiting strip 28.

[0039] In the above embodiment, the limiting strip 28 and the limiting block 29 cooperate with each other to limit the support member 16, thereby improving the stability of the support member 16 installation.

[0040] A first buffer pad 30 is fixedly connected to the upper side wall of the first hinge component 8, and a second buffer pad 31 is fixedly connected to the upper side of the second hinge component 10. The first buffer pad 30 and the second buffer pad 31 are made of rubber.

[0041] In this embodiment, the first buffer pad 30 and the second buffer pad 31 cooperate to limit and buffer the first hinge component 8 and the second hinge component 10, thereby avoiding the problem of damage to the components of the first circuit board 1 and the second circuit board 2 due to excessive folding of the circuit board, and effectively improving the safety of using the folding circuit board.

[0042] The flexible circuit board 3 has multiple elliptical holes 32, which are evenly distributed on the flexible circuit board 3.

[0043] In the above embodiments, the multiple elliptical holes 32 provided can improve the smoothness of deformation when the flexible circuit board 3 is folded and bent, and can improve the convenience of gas flow near the flexible circuit board 3, thereby improving the folding smoothness of the circuit board.

[0044] Working principle: During installation, two first hinge pieces 8 are fixed in the first mounting slot 5 on the first circuit board 1, and two second hinge pieces 10 are fixed in the second mounting slot 6 on the second circuit board 2. The second hinge pieces 10 are inserted into the U-shaped groove 11 on the first hinge pieces 8, so that the fixing hole 12 on the first hinge piece 8 is aligned with the shaft hole 14 on the second hinge piece 10. The fixing shaft 13 is inserted into the fixing hole 12 and the shaft hole 14. Through the interference fit between the fixing shaft 13 and the fixing hole 12, the fixing shaft 13 can be firmly fixed in the fixing hole 12, thereby enabling the first hinge pieces 8 and the second hinge pieces 10 to be rotatably connected together, thereby enabling the first circuit board 1 and the second circuit board 2 to be hinged together. The two hinges 4 can firmly connect the first circuit board 1 and the second circuit board 2 together and can share the tensile force generated when the first circuit board 1 and the second circuit board 2 are folded, thus avoiding the problem of tensile force being concentrated on the flexible circuit board 3 and causing damage to the flexible circuit board 3. This effectively improves the stability of the folded circuit board connection and effectively improves the service life of the folded circuit board.

[0045] In use, the first limiting sleeve 18 and the second limiting sleeve 19 can stably lock the support member 16 into the slot 15. The support member 16 can support the upper and lower sides of the first circuit board 1 and the second circuit board 2, so that the upper and lower sides of the first circuit board 1 and the second circuit board 2 are suspended during installation, thereby protecting the components on the first circuit board 1 and the second circuit board 2 and improving the safety of the first circuit board 1 and the second circuit board 2.

[0046] The rivets 23 can securely fix the flexible circuit board 3, thereby improving the stability of the connection between the flexible circuit board 3 and the first circuit board 1 and the second circuit board 2.

[0047] When installing the first hinge component 8 and the second hinge component 10, align the first threaded hole 24 with the second threaded hole 25, and screw the locking screw 26 into the first threaded hole 24 and the second threaded hole 25, so as to fix the first fixing block 7 and the second fixing block 9, thereby enabling the first hinge component 8 and the second hinge component 10 to be quickly fixed, effectively improving the convenience and stability of hinge 4 installation.

[0048] The pin hole 27 facilitates the fixing of the first circuit board 1 and the second circuit board 2, effectively improving the convenience of fixing and installing the first circuit board 1 and the second circuit board 2.

[0049] The first buffer pad 30 and the second buffer pad 31 work together to limit and buffer the first hinge component 8 and the second hinge component 10, thereby avoiding damage to the components of the first circuit board 1 and the second circuit board 2 due to excessive folding of the circuit board, and effectively improving the safety of using the folding circuit board.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit board with a hinged folding structure, comprising a first circuit board (1) and a second circuit board (2), characterized in that: A flexible circuit board (3) is fixedly connected between the first circuit board (1) and the second circuit board (2), and two hinges (4) are symmetrically connected between the first circuit board (1) and the second circuit board (2); The hinge (4) includes a first mounting groove (5) on the upper side of the first circuit board (1), and a second mounting groove (6) corresponding to the first mounting groove (5) on the side wall of the upper side of the second circuit board (2). The first mounting groove (5) is symmetrically fixedly connected to two first fixing blocks (7), and a first hinge component (8) is fixedly connected between the two first fixing blocks (7). The second mounting groove (6) is symmetrically fixedly connected to two second fixing blocks (9), and a second hinge component (10) is fixedly connected between the two second fixing blocks (9). The first hinge component (8) has a U-shaped groove (11) on the side close to the second hinge component (10). The first hinge component (8) has two fixing holes (12) communicating with the U-shaped groove (11). The same fixing shaft (13) is fixedly inserted into the two fixing holes (12). The second hinge component (10) has a shaft hole (14), and the fixing shaft (13) passes through the second hinge component (10) through the shaft hole (14).

2. A circuit board with a hinged folding structure according to claim 1, characterized in that: The first circuit board (1) and the second circuit board (2) have slots (15) on their front and rear sidewalls. The slots (15) are connected to support members (16). The support members (16) include rubber strips (17) that are movably inserted into the slots (15). Both ends of the rubber strips (17) extend out of the slots (15). A first limiting sleeve (18) and a second limiting sleeve (19) are fixedly sleeved on the rubber strips (17).

3. A circuit board with a hinged folding structure according to claim 2, characterized in that: The flexible circuit board (3) has four corners with first rivet holes (20). The sidewalls of the first circuit board (1) and the second circuit board (2) are provided with hidden grooves (21). The flexible circuit board (3) is located in two hidden grooves (21). Two second rivet holes (22) corresponding to the first rivet holes (20) are symmetrically provided in the hidden grooves (21). Rivets (23) are riveted into the two corresponding first rivet holes (20) and second rivet holes (22).

4. A circuit board with a hinged folding structure according to claim 3, characterized in that: Both the first fixing block (7) and the second fixing block (9) are provided with a first threaded hole (24), and both the first circuit board (1) and the second circuit board (2) are provided with a second threaded hole (25) corresponding to the first threaded hole (24). Multiple second threaded holes (25) are distributed in the first mounting groove (5) and the second mounting groove (6). Locking screws (26) are threaded into the first threaded hole (24) and the second threaded hole (25).

5. A circuit board with a hinged folding structure according to claim 4, characterized in that: Both the first circuit board (1) and the second circuit board (2) have two pin holes (27) symmetrically formed.

6. A circuit board with a hinged folding structure according to claim 5, characterized in that: A limiting strip (28) is fixedly connected inside the slot (15). Two limiting blocks (29) are symmetrically fixedly connected to the side walls of the first limiting sleeve (18) and the second limiting sleeve (19) on opposite sides. The distance between the upper and lower limiting blocks (29) is less than the thickness of the limiting strip (28).

7. A circuit board with a hinged folding structure according to claim 6, characterized in that: A first buffer pad (30) is fixedly connected to the upper side wall of the first hinge component (8), and a second buffer pad (31) is fixedly connected to the upper side of the second hinge component (10). The first buffer pad (30) and the second buffer pad (31) are made of rubber.

8. A circuit board with a hinged folding structure according to claim 7, characterized in that: The flexible circuit board (3) has multiple elliptical holes (32) evenly distributed on the flexible circuit board (3).

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