High-stability FPC and PCB connecting structure

Abstract

The utility model discloses a high-stability connection structure of an FPC (Flexible Printed Circuit) and a PCB (Printed Circuit Board). The high-stability connection structure comprises a first PCB, an FPC and a second PCB, the first PCB and the second PCB are both provided with fixing pieces, one end of the FPC is wound around the fixing piece of the first PCB to be electrically connected with the first PCB, and the other end of the FPC is wound around the fixing piece of the second PCB to be electrically connected with the second PCB. When the FPC is subjected to mechanical collision, as the FPC is wound on the fixing piece, certain buffering force of the FPC on the fixing piece can be reduced, the pulling force of the two end parts of the FPC is reduced, the FPC is prevented from falling off from the first PCB and the second PCB, the FPC is further prevented from losing electric energy supply and signal transmission of the first PCB and the second PCB, and the service life of the FPC is prolonged. Therefore, the connection between the FPC and the first PCB and the connection between the FPC and the second PCB are more reliable.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, and particularly to a connection structure between an FPC and a PCB with strong stability. Background Art

[0002] In the prior art, in large equipment, the size of the PCB board is too large, so the PCB board is divided into two pieces, and the two PCB boards are electrically connected by an FPC board to reduce the size of the product. However, there is no fixing device between the two PCB boards and the FPC board. If the connection structure is mechanically collided, due to the characteristics of the FPC, the FPC board is likely to fall off from the PCB board, causing the PCB board to lose power and signal transmission. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a connection structure between an FPC and a PCB with strong stability.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A connection structure between an FPC and a PCB with strong stability includes: a first PCB board, an FPC, and a second PCB board; fixing parts are arranged on both the first PCB board and the second PCB board. One end of the FPC winds around the fixing part of the first PCB board and is electrically connected to the first PCB board, and the other end winds around the fixing part of the second PCB board and is electrically connected to the second PCB board.

[0006] In one embodiment, the fixing part includes two fixing columns and a cross bar; the two fixing columns are respectively fixed on the first PCB board and the second PCB board, both ends of the cross bar are respectively fixed on the two fixing columns, and both ends of the FPC bypass the cross bar and are respectively electrically connected to the first PCB board and the second PCB board.

[0007] In one embodiment, the material of the fixing part is copper material.

[0008] In one embodiment, the cross bars on the first PCB board and the second PCB board are arranged in parallel.

[0009] In one embodiment, a connection structure between an FPC and a PCB with strong stability further includes two connectors, the two connectors are respectively welded on the first PCB board and the second PCB board, and the FPC is electrically connected to the first PCB board and the second PCB board through the two connectors respectively.

[0010] In one embodiment, fixing holes are respectively provided on the first PCB board and the second PCB board.

[0011] In one embodiment, four fixing holes are respectively provided on the first PCB board and the second PCB board, and the four fixing holes are respectively arranged at the four corners of the first PCB board and the second PCB board.

[0012] In one embodiment, a plug-in interface is provided at the edge of the second PCB board.

[0013] In one embodiment, the length of the cross bar is greater than the width of the FPC.

[0014] In one embodiment, copper-clad areas are respectively provided on the first PCB board and the second PCB board, and the fixing member is fixed on the copper-clad area.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] A connection structure of a highly stable FPC and PCB of the present utility model is provided with a first PCB board, an FPC, a second PCB board and a fixing member. Fixing members are provided on both the first PCB board and the second PCB board. One end of the FPC winds around the fixing member on the first PCB board, and the other end winds around the fixing member on the second PCB board and is electrically connected to the second PCB board. When the FPC is mechanically collided, since the FPC winds around the fixing member, the FPC can reduce a certain buffer force on the fixing member, making the pulling force at both ends of the FPC smaller, preventing the FPC from detaching from the first PCB board and the second PCB board, and further avoiding the FPC losing the power supply and signal transportation of the first PCB board and the second PCB board, thereby making the connection between the FPC and the first PCB board and the second PCB board more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic structural diagram of a connection structure of a highly stable FPC and PCB in an embodiment of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of a connection structure of a highly stable FPC and PCB in an embodiment of the present utility model;

[0020] Figure 3 It is a schematic structural diagram of a connection structure of a highly stable FPC and PCB in an embodiment of the present utility model.

[0021] Reference Signs:

[0022] The first PCB board 10, FPC 20, the second PCB board 30, the fixing member 40, the fixing post 41, the cross bar 42, the connector 50, and the fixing hole position 60. Detailed Embodiment

[0023] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0024] This application proposes a connection structure for an FPC and a PCB with strong stability. Please refer to Figure 1 , Figure 2 and Figure 3 , including: the first PCB board 10, FPC 20, the second PCB board 30, and the fixing member 40. Fixing members 40 are provided on both the first PCB board 10 and the second PCB board 30. One end of the FPC 20 winds around the fixing member 40 on the first PCB board 10, and the other end winds around the fixing member 40 on the second PCB board 30 and is electrically connected to the second PCB board 30. When the FPC 20 is mechanically collided, since the FPC 20 winds around the fixing member 40, the FPC 20 can reduce a certain buffer force on the fixing member 40, making the pulling force at both ends of the FPC 20 smaller, preventing the FPC 20 from detaching from the first PCB board 10 and the second PCB board 30, and thus avoiding the FPC 20 losing the power supply and signal transportation of the first PCB board 10 and the second PCB board 30, thereby making the connection between the FPC 20 and the first PCB board 10 and the second PCB board 30 more reliable.

[0025] Among them, please refer to Figure 3 , the fixing member 40 includes two fixing posts 41 and a cross bar 42. The two fixing posts 41 are fixed on the first PCB board 10 and the second PCB board 30, and both ends of the cross bar 42 are respectively fixed on the two fixing posts 41. Both ends of the FPC 20 bypass the cross bar 42 and are electrically connected to the first PCB board 10 and the second PCB board 30 respectively. When the FPC 20 is subjected to a pulling force, the FPC 20 can absorb most of the pulling force on the cross bar 42, reducing the pulling force at both ends of the FPC 20 and ensuring the stable electrical connection between the FPC 20 and the first PCB board 10 and the second PCB board 30.

[0026] Further, the fixing member 40 is made of copper material, which has good thermal conductivity. The first PCB board 10 and the second PCB board 30 can dissipate heat through the fixing member 40, accelerating the dissipation of the heat generated during the operation of the first PCB board 10 and the second PCB board 30. Moreover, copper-clad areas are respectively provided on the first PCB board 10 and the second PCB board 30, and the fixing member 40 is fixed on the copper-clad areas, so that the fixing member 40 can be stably fixed on the first PCB board 10 and the second PCB board 30.

[0027] In a preferred embodiment, the cross bars 42 on the first PCB board 10 and the second PCB board 30 are arranged in parallel, and the absorption area of the whole FPC 20 and the cross bars 42 is the largest, so that the force that the FPC 20 can absorb on the cross bars 42 is maximized, further ensuring the stable electrical connection between the FPC 20 and the first PCB board 10 and the second PCB board 30.

[0028] Further, please refer to Figure 2 , fixing holes 60 are respectively provided on the first PCB board 10 and the second PCB board 30, so that the first PCB board 10 and the second PCB board 30 can be fixed to the housing by screws passing through the fixing holes 60, reducing the shaking of the first PCB board 10 and the second PCB board 30 in the device. Preferably, the number of the fixing holes 60 is four, and the four fixing holes 60 are respectively arranged at the four corners of the first PCB board 10 and the second PCB board 30, thereby making the fixing of the first PCB board 10 and the second PCB board 30 in the housing more reliable.

[0029] Still further, a plug-in interface is provided at the edge of the second PCB board 30, and a gold finger is provided on the plug-in interface, so that the second PCB board 30 can be directly plugged into the electrical connection end of the main board, realizing fast electrical connection and improving the connection efficiency.

[0030] In another embodiment, the length of the cross bar 42 is greater than the width of the FPC 20, avoiding the FPC 20 from being folded or components falling off by the cross bar 42 in terms of width, affecting the circuit function and reducing the failure rate.

[0031] In addition, please refer to Figure 2 again, a connection structure between an FPC and a PCB with strong stability further includes two connectors 50. The two connectors 50 are respectively soldered on the first PCB board 10 and the second PCB board 30. The FPC 20 is electrically connected to the first PCB board 10 and the second PCB board 30 through the two connectors 50 respectively, so that the FPC 20 can be quickly electrically connected to the first PCB board 10 and the second PCB board 30, and the functional pins can be correspondingly connected.

[0032] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A highly stable FPC and PCB connection structure, characterized in that: include: A first PCB board, an FPC and a second PCB board; The first PCB board and the second PCB board are both provided with fixing parts, one end of the FPC is conductively connected to the first PCB board by passing through the fixing part of the first PCB board, and the other end is conductively connected to the second PCB board by passing through the fixing part of the second PCB board.

2. The connection structure of a FPC and a PCB with high stability according to claim 1, characterized in that: The fixing member includes two fixing columns and a cross bar; the two fixing columns are respectively fixed to the first PCB board and the second PCB board, the two ends of the cross bar are respectively fixed to the two fixing columns, and the two ends of the FPC bypass the cross bar and are respectively conductively connected to the first PCB board and the second PCB board.

3. The connection structure of a FPC and a PCB with high stability according to claim 1, characterized in that: The material of the fixing piece is copper.

4. The connection structure of a FPC and a PCB with high stability according to claim 2, characterized in that: The crossbars on the first PCB board and the second PCB board are arranged in parallel.

5. The connection structure of a FPC and a PCB with high stability according to claim 1, characterized in that: It also includes two connectors, which are respectively welded on the first PCB board and the second PCB board, and the FPC is respectively electrically connected to the first PCB board and the second PCB board through the two connectors.

6. The connection structure of a FPC and a PCB with high stability according to claim 1, characterized in that: The first PCB board and the second PCB board are respectively provided with fixing holes.

7. The FPC and PCB connection structure with high stability according to claim 6, characterized in that: The first PCB board and the second PCB board are respectively provided with four fixing holes, and the four fixing holes are respectively provided at four corners of the first PCB board and the second PCB board.

8. The connection structure of a FPC and a PCB with high stability according to claim 1, characterized in that: A plug-in interface is provided at the edge of the second PCB board.

9. The FPC and PCB connection structure with high stability according to claim 4, characterized in that: The length of the crossbar is greater than the width of the FPC.

10. The connection structure of a FPC and a PCB with high stability according to claim 1, characterized in that: Copper-clad areas are respectively provided on the first PCB board and the second PCB board, and the fixing member is fixed on the copper-clad areas.

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