A shock-absorbing assembly rack for multi-layer flexible circuit boards

Abstract

The present invention relates to the technical field of circuit board stacking, and in particular to a shock-absorbing assembly frame for a multi-layer flexible circuit board, comprising an upper mounting frame for connecting an upper flexible circuit board and a lower mounting frame for connecting a lower flexible circuit board. The shock-absorbing assembly frame for a multi-layer flexible circuit board of the present invention assembles adjacent flexible circuit boards through an upper mounting frame and a lower mounting frame, and then assembles them using an internal reset spring and an internal flip control bracket located inside a strip control port between the upper mounting frame and the lower mounting frame, and supports and limits the upper mounting frame and the lower mounting frame by inserting the limiting tooth surfaces inside a position-adjustable internal limiting plate at both ends of the internal flip control bracket, thereby improving its stability while ensuring shock absorption; the position of the limiting tooth surfaces is changed by pulling out an external plug-in block, thereby changing the spacing, making its assembly height adjustable, and having a wider range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board stacking, in particular to a shock-absorbing assembly rack for multi-layer flexible circuit boards. Background Art

[0002] Flexible circuit boards, also known as soft circuit boards and flexible circuit boards, are highly favored for their excellent properties such as light weight, thin thickness, and free bending and folding. With the rapid development of the electronics industry, circuit board design is becoming more and more high-precision and high-density. Traditional manual detection methods can no longer meet production needs, and automated detection of FPC defects has become an inevitable trend in industrial development.

[0003] Flexible circuit is a technology developed for the development of space rocket technology. It is a printed circuit with high reliability and excellent flexibility made of polyester film or polyimide as the substrate. By embedding the circuit design on the bendable thin plastic sheet, a large number of precision components can be stacked in a narrow and limited space to form a bendable flexible circuit. This kind of circuit can be bent and folded at will, with light weight, small size, good heat dissipation, and easy installation, breaking through the traditional interconnection technology. In the structure of the flexible circuit, the materials are insulating film, conductor and adhesive.

[0004] The current flexible circuit boards have a simple structure, and are mostly single-layer designs. At the same time, the spacing and angles between different layers of flexible circuit boards cannot be adjusted, so the scope of application is limited, and the impact resistance is poor. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, an improved shock-absorbing assembly frame for multi-layer flexible circuit boards is provided to solve the problems that the current flexible circuit boards have a simple structure, are mostly single-layer structures, and the spacing and angles between different layers of flexible circuit boards cannot be adjusted, the scope of application is limited, and the impact resistance is poor.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a shock-absorbing assembly frame for a multi-layer flexible circuit board, including an upper mounting frame for connecting an upper flexible circuit board and a lower mounting frame for connecting a lower flexible circuit board, strip control openings are provided inside the upper mounting frame and the lower mounting frame, an internal reset spring is installed inside the strip control opening between the upper mounting frame and the lower mounting frame, the middle position of the internal reset spring has an integrally bent central assembly cylinder, the internal reset spring is movably connected to an internal flip control bracket for adjusting the gap through the central assembly cylinder, and position-adjustable internal limit plates are installed on the left inner wall of the strip control opening of the upper mounting frame and the right inner wall of the strip control opening of the lower mounting frame.

[0007] A first lateral assembly slot for fixing and assembling an internal reset spring is provided on the right inner wall of the strip control opening of the upper mounting frame and the left inner wall of the strip control opening of the lower mounting frame, and a second lateral assembly slot for assembling a position-adjustable internal limit plate is provided on the left inner wall of the strip control opening of the upper mounting frame and the right inner wall of the strip control opening of the lower mounting frame.

[0008] The internal flip control bracket includes a flip support limit plate located inside the internal reset spring and an integral lateral rotating shaft fixed on both sides of the flip support limit plate. The flip support limit plate is inserted into the middle assembly tube through the lateral rotating shaft and is movably connected to the internal reset spring.

[0009] The position-adjustable internal limit plate comprises an internal assembly frame plugged and fixed inside the second lateral assembly slot, an external plug-in block plugged inside the internal assembly frame, an elastic limit extrusion frame fixed on both sides of the external plug-in block, an external limit plate fixed on the outside of the external plug-in block, and a limit tooth surface opened on the side wall of the external limit plate.

[0010] The inner sides of the first lateral assembly slot and the second lateral assembly slot are provided with lateral shrinkage strips at the opening position, the inner walls of the first lateral assembly slot and the second lateral assembly slot are provided with internal limit blocks of an integral structure, the internal assembly frame and the internal reset spring piece assembly surfaces are both provided with internal limit holes that match the internal limit blocks, the internal assembly frame is fixedly connected to the second lateral assembly slot on the outside of the internal limit block through the internal limit hole sleeve, and the internal reset spring piece is fixedly connected to the first lateral assembly slot on the outside of the internal limit block through the internal limit hole sleeve.

[0011] Both ends of the flip support limit plate are provided with top connecting grooves with built-in top limit cross bars, and the inner side surface of the limit tooth surface is located at the opening position and has an elastic arc strip for improving the anti-loosening property of the top limit cross bar.

[0012] The internal reset spring sheet and the flip support limit plate are installed in a staggered manner, and the left side of the upper surface and the right side of the lower surface of the flip support limit plate are both provided with lateral receiving grooves that match the external limit plate.

[0013] The side walls of the upper mounting frame and the lower mounting frame are fixedly connected with external linkage frames, and the side walls at both ends of the external connection frame are provided with an integrated arc-shaped lateral limiting frame bent upward.

[0014] A lateral clamping frame meshing with the inner side of the lateral limiting frame is inserted inside the lateral limiting frame.

[0015] The beneficial effects of the present invention are:

[0016] (1) A shock-absorbing assembly rack for a multi-layer flexible circuit board of the present invention assembles adjacent flexible circuit boards through an upper mounting rack and a lower mounting rack, and then assembles them using an internal reset spring and an internal flip control bracket located inside a strip-shaped control port between the upper mounting rack and the lower mounting rack. The two ends of the internal flip control bracket are respectively inserted into the limiting tooth surfaces inside the position-adjustable internal limiting plate to support and limit the upper mounting rack and the lower mounting rack, thereby ensuring shock absorption and improving stability;

[0017] (2) In the position-adjustable internal limit plate, the elastic limit extrusion frame on both sides of the external plug-in block is engaged with the internal assembly frame to achieve the fixed limit and adjustment functions. The position of the limit tooth surface is changed by pulling the external plug-in block, thereby changing the spacing, so that the assembly height is adjustable and the application range is wider;

[0018] (3) The internal reset spring and the flip support limit plate are installed in a staggered manner. At the same time, the left side of the upper surface and the right side of the lower surface of the flip support limit plate are provided with lateral storage grooves that match the external limit plate, so that the spacing between them is smaller in the storage state, which is convenient for storage and transportation;

[0019] (4) The stability and safety of the internal rollover control bracket connected to the limit end are improved by sleeve-forming the elastic arc strip at the opening position of the limit tooth surface on the top limit cross bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a partial cross-sectional view of the assembly ends on both sides of the strip-shaped control port in the present invention.

[0023] Figure 3 It is an internal cross-sectional view of the position of the lateral limit frame in the present invention. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Figure 1 , Figure 2 and Figure 3 A shock-absorbing assembly frame for a multi-layer flexible circuit board shown in the figure includes an upper mounting frame 1 for connecting an upper flexible circuit board and a lower mounting frame 2 for connecting a lower flexible circuit board. A strip control opening 3 is provided inside the upper mounting frame 1 and the lower mounting frame 2. An internal reset spring 4 is installed inside the strip control opening 3 between the upper mounting frame 1 and the lower mounting frame 2. The middle position of the internal reset spring 4 has an integrally bent central assembly tube 5. The internal reset spring 4 is movably connected to an internal flip control bracket for adjusting the gap through the central assembly tube 5. Position-adjustable internal limit plates are installed on the left inner wall of the strip control opening of the upper mounting frame 1 and the right inner wall of the strip control opening of the lower mounting frame 2.

[0027] Adjustment principle: by flipping the internal flip control bracket, both ends of the bracket are engaged and limited with the position-adjustable internal limit plates, thereby achieving the support limit function.

[0028] Furthermore, in order to cooperate with the installation connection, a first lateral assembly slot 6 for fixing and assembling the internal reset spring 4 is provided on the right inner wall of the strip control port of the upper mounting frame 1 and the left inner wall of the strip control port of the lower mounting frame 2, and a second lateral assembly slot 7 for assembling a position-adjustable internal limit plate is provided on the left inner wall of the strip control port of the upper mounting frame 1 and the right inner wall of the strip control port of the lower mounting frame 2.

[0029] Furthermore, in order to cooperate with the active assembly, the internal flip control bracket includes a flip support limit plate 8 located on the inner side of the internal reset spring sheet 4 and an integral structure lateral rotation shaft 9 fixed on both sides of the flip support limit plate 8. The flip support limit plate 8 is inserted into the middle assembly tube 5 through the lateral rotation shaft 9 and is movably connected with the internal reset spring sheet 4.

[0030] The flip support limit plate 8 is inserted from the notch on the central assembly tube 5 through the lateral rotation axis to complete the installation.

[0031] Furthermore, in order to cooperate with lateral extension and contraction, the position-adjustable internal limit plate includes an internal assembly frame 10 plugged and fixed inside the second lateral assembly slot 7, an external plug-in block 11 plugged into the internal assembly frame 10, an elastic limit extrusion frame 12 fixed on both sides of the external plug-in block 11, an external limit plate 13 fixed on the outside of the external plug-in block 11, and a limit tooth surface 14 opened on the side wall of the external limit plate 13.

[0032] By pressing the elastic limiting extrusion frame 12, the card slot on the outside of the elastic limiting extrusion frame 12 is disengaged from the limiting plate inside the internal assembly frame 10, so that the external plug-in block 11 can be telescopically adjusted, and then the elastic limiting extrusion frame 12 is released. At this time, the card slot on the outside of the elastic limiting extrusion block 12 is inserted into the limiting plate inside the internal assembly frame 10, and the external plug-in block 11 is fixed and limited.

[0033] Furthermore, in order to cooperate with installation and fixation, the inner sides of the first lateral assembly slot 6 and the second lateral assembly slot 7 are provided with lateral shrinking strips 15 at the opening position, and the inner walls of the first lateral assembly slot 6 and the second lateral assembly slot 7 are provided with internal limit blocks 16 of an integral structure. The internal assembly frame 10 and the internal reset spring piece 4 are provided with internal limit holes that cooperate with the internal limit blocks 16 on the assembly surfaces. The internal assembly frame 10 is fixedly connected to the second lateral assembly slot 7 on the outside of the internal limit block 16 through the internal limit hole sleeve, and the internal reset spring piece 4 is fixedly connected to the first lateral assembly 6 slot on the outside of the internal limit block 16 through the internal limit hole sleeve.

[0034] Furthermore, in order to improve the anti-loosening property and prevent the top limiting cross bar 17 from separating and loosening from the limiting tooth surface 14 due to external vibration, top connecting grooves with built-in top limiting cross bar 17 are provided at both ends of the flip support limiting plate 8, and the inner side surface of the limiting tooth surface 14 is located at the opening position and has an elastic arc strip 18 that improves the anti-loosening property of the top limiting cross bar 17.

[0035] Furthermore, in order to reduce the gap in the storage state, the internal reset spring 4 and the flip support limit plate 8 are installed in an offset manner, and the flip support limit plate 8 has a lateral storage groove 19 that cooperates with the external limit plate 13 on the left side of the upper surface and the right side of the lower surface.

[0036] Furthermore, in order to facilitate the assembly of the flexible circuit board, an external linkage frame 21 is fixedly connected to the side walls of the upper mounting frame 1 and the lower mounting frame 2. The side walls at both ends of the external connection frame 21 have an integrated arc-shaped lateral limiting frame 22 bent upward.

[0037] Furthermore, in order to cooperate with angle adjustment and lateral tightening, a lateral clamping frame 23 engaged with the inner side surface of the lateral limit frame 22 is inserted into the interior of the lateral limit frame 22 .

[0038] A downward-bending integral structure rack is provided at the upper end of the opening position of the lateral limit frame 22, and then an arc-shaped meshing tooth groove meshing with the rack is opened on the outer surface of the lateral clamping frame 23, and then a lateral receiving groove with a built-in extrusion spring sheet is opened on the inner wall adjacent to the lateral limit frame 22. The extrusion spring sheet is used to improve the meshing stability between the arc-shaped meshing tooth groove and the rack, and then the flexible circuit board is squeezed inward from both sides through the lateral clamping frame 23, so as to adjust the assembly angle of the flexible circuit board.

[0039] A shock-absorbing assembly frame for a multi-layer flexible circuit board of the present invention is used to assemble adjacent flexible circuit boards through an upper mounting frame 1 and a lower mounting frame 2, and then the internal reset spring piece 4 and the internal flip control bracket located inside the strip control port 3 between the upper mounting frame 1 and the lower mounting frame 2 are used for assembly, and the upper mounting frame 1 and the lower mounting frame 2 are supported and limited by inserting the limiting tooth surfaces 14 inside the position-adjustable internal limiting plate at both ends of the internal flip control bracket, thereby ensuring shock absorption and improving stability; the elastic limiting extrusion frame 12 on both sides of the position-adjustable internal limiting plate and the internal assembly frame 1 0 is connected internally to achieve the function of fixed limit and adjustment, and the position of the limit tooth surface 14 is changed by pulling out the external plug-in block 11, thereby changing the spacing, so that the assembly height is adjustable and the scope of application is wider; the internal reset spring piece 4 and the flip support limit plate 8 are installed in a staggered manner, and at the same time, the left side of the upper surface and the right side of the lower surface of the flip support limit plate 8 are provided with lateral storage grooves 19 that match the external limit plate 13, so that the spacing is smaller in the storage state, which is convenient for storage and transportation; the elastic arc strip 18 at the opening position of the limit tooth surface 14 is sleeved on the top limit cross bar 17 to improve the stability and safety of the internal flip control bracket 8 connecting the limit end.

[0040] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A shock-absorbing assembly frame for a multi-layer flexible circuit board, comprising an upper mounting frame (1) for connecting an upper flexible circuit board, and a lower mounting frame (2) for connecting a lower flexible circuit board, wherein: The upper mounting frame (1) and the lower mounting frame (2) are provided with a strip control opening (3) inside. An internal reset spring (4) is installed inside the strip control opening (3) between the upper mounting frame (1) and the lower mounting frame (2). The middle of the internal reset spring (4) has an integrally bent central assembly tube (5). The internal reset spring (4) is movably connected to an internal flip control bracket for adjusting the gap through the central assembly tube (5). Position-adjustable internal limit plates are installed on the left inner wall of the strip control opening of the upper mounting frame (1) and the right inner wall of the strip control opening of the lower mounting frame (2).

2. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 1, characterized in that: A first lateral assembly slot (6) for fixing and assembling an internal reset spring sheet (4) is provided on the right inner wall of the strip-shaped control opening of the upper mounting frame (1) and the left inner wall of the strip-shaped control opening of the lower mounting frame (2), and a second lateral assembly slot (7) for assembling a position-adjustable internal limit plate is provided on the left inner wall of the strip-shaped control opening of the upper mounting frame (1) and the right inner wall of the strip-shaped control opening of the lower mounting frame (2).

3. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 2, characterized in that: The internal flip control bracket comprises a flip support limit plate (8) located inside the internal reset spring sheet (4) and an integrally structured lateral rotation shaft (9) fixed on both sides of the flip support limit plate (8); the flip support limit plate (8) is inserted into the middle assembly tube (5) through the lateral rotation shaft (9) and is movably connected to the internal reset spring sheet (4).

4. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 3, characterized in that: The position-adjustable internal limit plate comprises an internal assembly frame (10) plugged and fixed inside the second lateral assembly slot (7), an external plug-in block (11) plugged inside the internal assembly frame (10), an elastic limit extrusion frame (12) fixed on both sides of the external plug-in block (11), an external limit plate (13) fixed on the outside of the external plug-in block (11), and a limit tooth surface (14) provided on the side wall of the external limit plate (13).

5. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 4, characterized in that: The inner side surfaces of the first lateral assembly slot (6) and the second lateral assembly slot (7) are provided with lateral shrinkage strips (15) at the opening position, and the inner walls of the first lateral assembly slot (6) and the second lateral assembly slot (7) are provided with internal limit blocks (16) of an integral structure. The assembly surfaces of the internal assembly frame (10) and the internal reset spring sheet (4) are both provided with internal limit holes that match the internal limit blocks (16). The internal assembly frame (10) is fixedly connected to the second lateral assembly slot (7) by being sleeved on the outer side of the internal limit block (16) through the internal limit holes, and the internal reset spring sheet (4) is fixedly connected to the first lateral assembly slot (6) by being sleeved on the outer side of the internal limit block (16) through the internal limit holes.

6. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 4, characterized in that: Both ends of the flip support limit plate (8) are provided with top connection grooves for internally storing a top limit cross bar (17), and the inner side surface of the limit tooth surface (14) is located at the opening position and has an elastic arc strip (18) for lifting the top limit cross bar (17) to prevent it from loosening.

7. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 3, characterized in that: The internal reset spring (4) and the flip support limit plate (8) are installed in a staggered manner, and the left side of the upper surface and the right side of the lower surface of the flip support limit plate (8) are both provided with lateral receiving grooves (19) that match the external limit plate (13).

8. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 1, characterized in that: The upper mounting frame (1) and the lower mounting frame (2) are fixedly connected to the side walls with external linkage frames (21), and the side walls at both ends of the external linkage frame (21) are provided with an integrated arc-shaped lateral limiting frame (22) bent upward.

9. The shock-absorbing assembly rack for a multi-layer flexible circuit board according to claim 8, characterized in that: A lateral clamping frame (23) is inserted into the lateral limit frame (22) and meshes with the inner side surface of the lateral limit frame (22).

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