Connector for flexible printed circuit board

Abstract

The utility model discloses a connector for a flexible printed circuit board, which belongs to the technical field of electrical connection, and is characterized in that the connector comprises a shell, the front side of the shell is provided with a connecting cavity, through arrangement of a clamping assembly, FPCs with different thicknesses can be placed in the connecting cavity during use, contact pins of the FPCs are positioned on the inner sides of metal contact pieces, and then the metal contact pieces are clamped by the clamping assembly. The screws at the top and the bottom are rotated by a hexagon wrench, the screws move inwards to compress the springs, the screws can be stabilized by rebound force generated by the springs, the positions of the isolation plates can be adjusted along with rotation of the screws, then the metal contact pieces are driven to move towards the FPC contact pins and clamp the FPC contact pins, the clamping force is accurately adjusted according to the thickness of the FPC, and stable connection is ensured. The deformation metal sheet has elasticity and is in an S shape, and can deform when the metal contact piece moves inwards, so that the metal contact piece and the FPC contact pin are attached more tightly, the contact resistance is effectively reduced, and the signal transmission quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical connection, especially relates to a connector for flexible printed circuit board. BACKGROUND

[0002] Flexible printed circuit board can be simply referred to as FPC, because of having light, thin, bendable and other advantages, it is increasingly widely used in electronic equipment, and the performance of the connector as the key component for connecting FPC and other electronic components directly affects the overall operation stability of the electronic equipment.

[0003] The existing connector is inconvenient to install and disassemble, and is not firm and easy to fall off when connected, which leads to unstable connection of the connector; and the existing connector is inconvenient to detect the electronic components inside the connector.

[0004] The existing patent (publication number: CN210052928U) discloses a printed circuit board connector, which comprises a shell, a clamp, a concave shell and an opening, so that the clamp can be lowered and clamped on the opening by extruding the shell, thereby realizing the clamping of the shell and the concave shell, and further firmly inserting the connector male seat and the connector female seat inside, and the elastic element in the concave shell can provide restoring force during clamping, so that the clamp can be clamped more firmly on the concave shell.

[0005] In view of the above problems, the existing patent provides a solution, but the existing FPC connector has poor adaptability to FPCs of different thicknesses. With the development of electronic equipment towards lightness, thinness and multifunction, the thickness specifications of FPCs are increasingly diversified, but the existing connector is difficult to meet this trend. In the face of FPCs of different thicknesses, the existing connector either cannot be stably connected or has poor signal transmission quality after connection, greatly limiting its application in diversified products and being difficult to meet the market demand for the universality and compatibility of the connector.

[0006] Therefore, a connector for flexible printed circuit board is proposed. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a connector for flexible printed circuit board, which can solve the problem of poor adaptability of the existing FPC connector to FPCs of different thicknesses. With the development of electronic equipment towards lightness, thinness and multifunction, the thickness specifications of FPCs are increasingly diversified, but the existing connector is difficult to meet this trend. In the face of FPCs of different thicknesses, the existing connector either cannot be stably connected or has poor signal transmission quality after connection, greatly limiting its application in diversified products and being difficult to meet the market demand for the universality and compatibility of the connector.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a connector for flexible printed circuit board, including casing, the front side of casing is equipped with connecting cavity, the inside of connecting cavity is provided with clamping component, the inside of clamping component is provided with FPC, the rear side of top and bottom of FPC is provided with contact pin;

[0009] The clamping component includes a connecting piece embedded in the front side of the connecting cavity, a deformation metal sheet is welded to the top and bottom of the front side of the connecting piece, a metal contact piece is welded to the front side of the deformation metal sheet, the metal contact piece is located on the outer side of the FPC contact pin, a hole groove is formed in the top and bottom of the casing, a spring is fixedly connected to the inner side of the hole groove, a screw rod is arranged in the spring, the screw rod is threadedly connected to the inner side of the hole groove and penetrates through, a connecting isolation plate is fixedly connected to the outer side of the metal contact piece, the connecting isolation plate is rotatably connected to the inner side of the screw rod, auxiliary sliding structures are arranged on both sides of the connecting cavity.

[0010] Preferably, the auxiliary sliding structure includes a fixed block fixedly connected to both sides of the connecting cavity, and the fixed block is located on the outer side of the FPC, the metal contact piece and the connecting isolation plate.

[0011] Preferably, a groove is formed in the inner side of the fixed block, and a rotating shaft is rotatably connected to the front side and the rear side of the groove.

[0012] Preferably, an auxiliary sliding belt is sleeved on the outer side of the rotating shaft, and the auxiliary sliding belt is located on the outer side of the FPC.

[0013] Preferably, a connecting terminal is arranged in the inner side of the rear side of the casing, and the front side of the connecting terminal is welded to the rear side of the connecting piece.

[0014] Preferably, a sharp elastic sheet is welded to the inner side of the metal contact piece, and the sharp elastic sheet is in a conical shape.

[0015] Preferably, a plug cover is clamped to the outer side of the hole groove, and the plug cover is made of rubber material.

[0016] Preferably, a pull ring is fixedly connected to the outer side of the plug cover, and the pull ring is hollow.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1、The application sets up the clamping assembly, when using, the FPC of different thickness can be put into the connecting cavity, the contact pin of FPC is located in the inner side of the metal contact piece, then the hexagonal wrench is used to rotate the screw rod of the top and bottom, the screw rod moves inward and compresses the spring, the rebound force generated by the spring can stabilize the screw rod, with the rotation of the screw rod, the inner side can adjust the position of the connecting isolation plate, and then drives the metal contact piece to move and clamp the FPC contact pin, realizes the accurate adjustment of clamping force according to the thickness of FPC, ensures the stability of connection, in addition, the deformed metal sheet has elasticity and is S-shaped, when the metal contact piece moves inward, it will deform, so that the metal contact piece and the FPC contact pin fit more tightly, effectively reduce the contact resistance, improve the signal transmission quality, meet the use demand of diversified products;

[0019] 2、The application sets up the auxiliary sliding structure, when inserting FPC of different thickness, it can play the auxiliary guiding and positioning role, so that FPC cooperates with the clamping assembly smoothly and accurately, avoids the problems of deviation and jamming, which not only improves the installation efficiency, but also further guarantees the stability of connection, enhances the universality and compatibility of the connector in practical application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structural drawing of the connector for flexible printed circuit board of the utility model;

[0021] Figure 2 It is the structure drawing of the shell of the utility model;

[0022] Figure 3 It is the structure drawing of the clamping assembly of the utility model;

[0023] Figure 4 It is the structure drawing of the auxiliary sliding structure of the utility model;

[0024] Figure 5 It is the structure drawing of the connecting sheet of the utility model.

[0025] In the drawing, 1, shell; 2, connecting cavity; 3, clamping assembly; 31, connecting sheet; 32, deformed metal sheet; 33, metal contact piece; 34, hole groove; 35, spring; 36, screw rod; 37, connecting isolation plate; 38, auxiliary sliding structure; 381, fixed block; 382, recess; 383, rotating shaft; 384, auxiliary sliding belt; 4, FPC; 5, connecting terminal; 6, sharp elastic sheet; 7, plug cover; 8, pull ring. DETAILED DESCRIPTION

[0026] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0027] Please refer to Figures 1-5 The utility model provides technical scheme:

[0028] A kind of connector for flexible printed circuit board, including shell 1, the front side of shell 1 is equipped with connecting cavity 2, the inside of connecting cavity 2 is provided with clamping component 3, the inside of clamping component 3 is provided with FPC 4, the rear side of FPC 4 top and bottom is provided with contact pin;

[0029] Clamping component 3 includes connecting sheet 31 embedded in the inside front side of connecting cavity 2, the top and bottom of the front side of connecting sheet 31 are welded with deformation metal sheet 32, the front side of deformation metal sheet 32 is welded with metal contact piece 33, metal contact piece 33 is located at the outside of FPC 4 contact pin, the top and bottom of shell 1 are equipped with hole slot 34, the inside of hole slot 34 is fixedly connected with spring 35, the inside of spring 35 is provided with screw rod 36, screw rod 36 is screw connected on the inside of hole slot 34 and penetrates, the outside of metal contact piece 33 is fixedly connected with connecting isolation plate 37, the outside of connecting isolation plate 37 is rotatably connected with the inside of screw rod 36, both sides in connecting cavity 2 are provided with auxiliary sliding structure 38.

[0030] In the embodiment: by setting clamping component 3, when connecting FPC 4, the connecting cavity 2 of shell 1 can satisfy FPC 4 of different thicknesses to be put in, simultaneously, auxiliary sliding structure 38 plays an important role when FPC 4 is inserted into connecting cavity 2, it guides FPC 4 to be inserted accurately, avoids deviation and jam, so that FPC 4 can enter quickly and smoothly, improves installation efficiency, and then, the FPC 4 placed makes its contact pin be at the inside of metal contact piece 33, at this time, screw rod 36 is rotated, because screw rod 36 is screw connected with hole slot 34, when being rotated inward, spring 35 will be compressed, the rebound force of spring 35 can prevent screw rod 36 from shaking, ensure stable adjustment, along with the rotation of screw rod 36, connecting isolation plate 37 moves under the drive of screw rod 36, and then pushes metal contact piece 33 to be close to FPC 4 contact pin and clamps tightly, because screw rod 36 can be rotated flexibly according to the thickness of FPC 4, so that the clamping force can be adjusted accurately, adapt to FPC 4 of different thicknesses, and the deformation metal sheet 32 of S type will be elastically deformed when metal contact piece 33 moves, so that metal contact piece 33 is tightly attached to FPC 4 contact pin, reduces contact resistance, and guarantees high-quality signal transmission.

[0031] Specifically, as Figure 4As shown, the auxiliary sliding structure 38 includes a fixing block 381 fixedly connected to both sides inside the connecting cavity 2. The fixing block 381 is located outside the FPC4, the metal contact piece 33 and the connecting isolation plate 37.

[0032] Specifically, such as Figure 4 As shown, a groove 382 is provided on the inner side of the fixing block 381, and a rotating shaft 383 is rotatably connected to the front and rear sides of the groove 382.

[0033] Specifically, such as Figure 4 As shown, an auxiliary sliding belt 384 is sleeved on the outer side of the rotating shaft 383, and the auxiliary sliding belt 384 is located on the outer side of the FPC4.

[0034] In this embodiment: by setting the auxiliary sliding structure 38, when the FPC4 is inserted into the connecting cavity 2, the auxiliary sliding bands 384 on the fixing blocks 381 on both sides of the connecting cavity 2 begin to function. The rotating shaft 383 in the groove 382 on the inner side of the fixing block 381 can rotate flexibly, so that the auxiliary sliding band 384 can roll as the FPC4 is inserted. The auxiliary sliding band 384 is located on the outside of the FPC4, providing a stable guide for the FPC4, effectively preventing the FPC4 from deviating during the insertion process, ensuring that it can accurately enter the connecting cavity 2 and cooperate with the clamping assembly 3. At the same time, the rolling auxiliary sliding band 384 reduces the friction when the FPC4 is inserted, preventing jamming, allowing the FPC4 to reach the designated position quickly and smoothly, significantly improving the installation efficiency.

[0035] Specifically, such as Figure 5 As shown, a connecting terminal 5 is provided inside the rear side of the housing 1, and the front side of the connecting terminal 5 is welded to the rear side of the connecting piece 31.

[0036] Specifically, such as Figure 5 As shown, a sharp spring 6 is welded to the inner side of the metal contact 33, and the sharp spring 6 is conical in shape.

[0037] In this embodiment: By setting the connecting terminal 5 and the sharp spring 6, the connecting terminal 5 is welded to the back side of the connecting piece 31, which acts as a bridge. After the housing 1 is plugged into the corresponding connecting end on the electronic device, the connecting terminal 5 will be electrically connected to the connecting end. In this way, the signal on the FPC4 can be stably transmitted to other electronic devices. In addition, the sharp spring 6 inside the metal contact 33 is conical. When the metal contact 33 is in close contact with the contact pin of the FPC4, the sharp spring 6 can easily pierce the oxide layer that may exist on the surface of the contact pin of the FPC4 due to its conical structure, so that the conductive part of the metal contact 33 and the contact pin of the FPC4 can directly contact each other. In this way, not only is the contact area increased, but the contact resistance is also reduced, thereby ensuring high-quality signal transmission and ensuring the reliability and stability of the connector in terms of electrical connection.

[0038] Specifically, as shown in Figure 3 The outer side of the hole slot 34 is clamped with a plug cover 7, which is made of rubber material.

[0039] Specifically, as shown in Figure 3 The outer side of the plug cover 7 is fixedly connected with a pull ring 8, and the inside of the pull ring 8 is a cavity.

[0040] In this embodiment: by setting the plug cover 7 and the pull ring 8, the rubber plug cover 7 clamped on the outer side of the hole slot 34 can effectively prevent dust, sundries and the like from entering the inside of the hole slot 34, avoiding that these impurities affect the normal work of the screw rod 36 and the spring 35, and the pull ring 8 on the plug cover 7 has a cavity inside, which is convenient to hook with fingers or tools, when it is necessary to adjust the screw rod 36, the plug cover 7 can be easily pulled off from the hole slot 34 through the pull ring 8, and after the adjustment is completed, the plug cover 7 can be conveniently clamped back into the hole slot 34 with the help of the pull ring 8, the operation is simple and convenient, and the user experience is enhanced.

[0041] Working principle: in the process of using the connector for flexible printed circuit board, first, when connecting the FPC 4, insert the FPC 4 into the connecting cavity 2, at this time, the auxiliary sliding belt 384 in the auxiliary sliding structure 38 on both sides of the connecting cavity 2 begins to play a role, the rotating shaft 383 in the inner side groove 382 of the fixed block 381 rotates flexibly, drives the auxiliary sliding belt 384 to roll, the auxiliary sliding belt 384 is located outside the FPC 4, not only provides guidance for the FPC 4 to prevent it from deviating when inserting, but also reduces the friction force to avoid jamming, so that the FPC 4 can quickly and smoothly enter the connecting cavity 2 and reach the specified position, improve the installation efficiency, after the FPC 4 is placed in place, the contact pin is located inside the metal contact piece 33, then, rotate the screw rod 36 at the top and the bottom by using the hexagonal tool, since the screw rod 36 is screwed with the hole slot 34, rotating the screw rod 36 inward will compress the spring 35, the rebound force generated by the spring 35 ensures that the screw rod 36 is stable during adjustment and will not shake, with the rotation of the screw rod 36, the connecting isolation plate 37 moves under the driving of the screw rod 36, and then pushes the metal contact piece 33 to approach and clamp the contact pin of the FPC 4, according to the thickness of the FPC 4, flexibly rotating the screw rod 36 can accurately adjust the clamping force to adapt to FPC 4 of various thicknesses, in this process, the S-shaped deformed metal sheet 32 will be elastically deformed due to the movement of the metal contact piece 33, so that the metal contact piece 33 is more closely attached to the contact pin of the FPC 4, reducing the contact resistance and ensuring high-quality signal transmission, in addition, the conical sharp spring 6 inside the metal contact piece 33 can pierce the oxide layer on the surface of the contact pin when the metal contact piece 33 is closely attached to the contact pin of the FPC 4, so that the metal contact piece 33 directly contacts the conductive part, further increasing the contact area and reducing the contact resistance, ensuring reliable and stable electrical connection, after completing the connection of the FPC 4, only need to insert the shell 1 of the connector with the corresponding connecting terminal on the electronic equipment, the connecting terminal 5 plays the role of bridge to realize the electrical connection with the connecting terminal of the electronic equipment, so that the signal on the FPC 4 is stably transmitted to other electronic equipment, the overall cooperation meets the use demand of diversified products, and enhances the universality and compatibility of the connector in practical application.

[0042] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A connector for flexible printed circuit boards, comprising a housing (1), characterized in that: The front side of the housing (1) is provided with a connecting cavity (2), and a clamping assembly (3) is provided inside the connecting cavity (2). An FPC (4) is provided inside the clamping assembly (3), and contact pins are provided on the rear side of the top and bottom of the FPC (4). The clamping assembly (3) includes a connecting piece (31) embedded in the front side of the connecting cavity (2). Deformable metal sheets (32) are welded to the top and bottom of the front side of the connecting piece (31). A metal contact (33) is welded to the front side of the deformable metal sheet (32). The metal contact (33) is located outside the contact pin of the FPC (4). The top and bottom of the housing (1) are provided with slots (34). A spring (35) is fixedly connected to the inner side of the slot (34). A screw (36) is provided inside the spring (35). The screw (36) is threaded to the inner side of the slot (34) and passes through it. A connecting isolation plate (37) is fixedly connected to the outer side of the metal contact (33). The outer side of the connecting isolation plate (37) is rotatably connected to the inner side of the screw (36). A sliding structure (38) is provided on both sides inside the connecting cavity (2).

2. The connector for a flexible printed circuit board according to claim 1, characterized in that: The auxiliary sliding structure (38) includes a fixing block (381) fixedly connected to both sides inside the connecting cavity (2), and the fixing block (381) is located outside the FPC (4), the metal contact plate (33) and the connecting isolation plate (37).

3. The connector for a flexible printed circuit board according to claim 2, characterized in that: The inner side of the fixing block (381) is provided with a groove (382), and the front and rear sides of the groove (382) are rotatably connected to a rotating shaft (383).

4. A connector for a flexible printed circuit board according to claim 3, characterized in that: An auxiliary sliding band (384) is sleeved on the outside of the rotating shaft (383), and the auxiliary sliding band (384) is located on the outside of the FPC (4).

5. A connector for a flexible printed circuit board according to claim 1, characterized in that: A connecting terminal (5) is provided inside the rear side of the housing (1), and the front side of the connecting terminal (5) is welded to the rear side of the connecting piece (31).

6. A connector for a flexible printed circuit board according to claim 1, characterized in that: A sharp spring (6) is welded to the inner side of the metal contact (33), and the sharp spring (6) is conical in shape.

7. A connector for a flexible printed circuit board according to claim 1, characterized in that: A plug (7) is snapped into the outer side of the inside of the groove (34), and the plug (7) is made of rubber material.

8. A connector for a flexible printed circuit board according to claim 7, characterized in that: A pull ring (8) is fixedly connected to the outside of the plug (7), and the inside of the pull ring (8) is a cavity.

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