Flexible printed circuit (FPC) connector with stable contact

Abstract

The utility model discloses a stable contact FPC connector comprising a housing, the inner side surface of the housing is provided with a mounting groove, the interior of the mounting groove is provided with a first contact terminal and a second contact terminal, one end of the housing is plugged with a protection seat, the side surfaces of the two ends of the protection seat are fixedly provided with positioning blocks, and the positioning blocks are connected with the first contact terminal and the second contact terminal. And backrests are fixedly arranged at the two ends of the shell. According to the FPC connector with stable contact, the deformation gaps are reserved on the upper side and the lower side of the terminal, so that the terminal can move up and down in a deformation mode when being in contact with the FPC, and even if a slight fall exists between adjacent pins, poor contact caused by a contact problem does not exist; through the mode that the protection seat is connected with the supporting locking piece and the barb locking piece at one end of the first contact terminal and one end of the second contact terminal after being inserted into the shell, the first contact terminal and the second contact terminal can be stably installed after being inserted into the shell, and loosening of parts cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC connectors, in particular to an FPC connector with stable contact. Background Art

[0002] FPC connector is a circuit board made of soft material, also called flexible printed circuit board, used to connect LCD display to PCB. There are three common FPC connection methods, which are divided into upper contact, lower contact and double-sided contact. It has the advantages of high density, small size and light weight, flexible application, can be bent and folded, and can be moved and stretched at will in three-dimensional space. It has good heat dissipation performance, simple wiring, can effectively save space and labor costs, and can realize the integration of component devices and wire connections. It is widely used in the electronic product market. On the one hand, devices represented by smart phones are developing towards small and thin, and on the other hand, the integration of functional modules has led to a growing demand for signal transmission. FPC flexible circuits are usually used as the main connection inside electronic products, which can provide interconnection between mobile or active parts and realize the connection between the display and the body of the smart phone. It is very stable and reliable in strength and structure. The development of FPC connectors has also changed with the changes in electronic equipment, with a trend of small pitch, multiple pins, small size, high integration and multiple contacts. FPC connectors must be comprehensively analyzed and strictly tested from appearance design to product performance and quality. Control, in the manufacturing process of FPC connectors, testing is a very important part. First of all, the appearance must be confirmed to be firm and qualified, and the performance must be tested to test the reliability, environmental resistance, and life span of the connection. Secondly, the test connection module must have strong adaptability in small pitches, strong connection functions, and the ability to transmit large currents. The FPC connector consists of four parts, namely, the rubber core, tongue, terminal, and welding piece. These four parts have different functions: the rubber core protects the terminal, insulates, guides during connection, and provides mechanical strength, and the tongue crimps the cable, Insulation, correction during connection and providing structural strength, etc. The terminals play the role of electronic signal transmission, and the welding pieces play the role of component positioning, fixing and increasing strength. The terminals are usually made by stamping process, and stamping parts belong to high-capacity workstations. The mold design is often based on maximizing output. When stamping in 4*4 mode, 4 terminal workpieces will be produced at a time. When the FPC connector is assembled, it will be assembled in a cycle according to the order of the output terminals 1234. Therefore, when there is a size difference between the four pins, it will be fed back to the finished product. If the gap is large, poor contact will occur. Utility Model Content

[0003] The utility model aims to provide an FPC connector with stable contact, so as to solve the problem of poor contact when four pins have size differences proposed in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a stable contact FPC connector, comprising a shell, an inner surface of the shell is provided with a mounting groove, and a first contact terminal and a second contact terminal are arranged inside the mounting groove, a protective seat is inserted into one end of the shell, positioning blocks are fixedly arranged on the side surfaces of both ends of the protective seat, and a backrest is fixedly arranged at both ends of the shell.

[0005] Preferably, the first contact terminal is fixedly arranged at both ends of the support locking piece, and the support locking piece is of U-shaped design, and an anti-slip rod is fixedly arranged on one side of the lower end of the support locking piece, and the side surface of one end of the first contact terminal facing the outside of the shell is designed to be bent toward each other, and a gap is left between one end of the bent design of the first contact terminal and the inner upper surface of the mounting groove and the upper surface of the anti-slip rod.

[0006] By adopting the above technical solution, the first contact terminal can obtain space for deformation to ensure stable insertion.

[0007] Preferably, a pressing block is fixedly provided at the lower end of the protection seat, and gaps are left between the pressing blocks, and the pressing blocks are evenly distributed at the lower end of the protection seat.

[0008] By adopting the above technical solution, the pressing block can stably press the supporting locking piece.

[0009] Preferably, a barb locking piece and a second anti-dropout rod are fixedly provided at one end of the second contact terminal facing the protective seat, and anti-dropout rods 2 and 1 are both fixedly provided with anti-dropout hooks at one end, and the side surface of one end of the second contact terminal facing the outside of the housing is designed to be bent toward each other, and a gap is left between one end of the second contact terminal with a bent design and the upper and lower surfaces inside the mounting groove.

[0010] By adopting the above technical solution, the second contact terminal can obtain space for deformation to ensure stable insertion.

[0011] Preferably, the barb locking piece is a rod-shaped design with a barb provided at one end, and the anti-detachment hook is snap-fitted and installed with the lower end of the housing.

[0012] By adopting the above technical solution, the anti-drop hook can ensure that the first contact terminal and the housing are stably installed.

[0013] Preferably, a barb column is fixedly provided between two adjacent pressing blocks, and the barb column is engaged with the barb locking piece.

[0014] By adopting the above technical solution, the barb locking piece can ensure the stability of the second contact terminal by engaging with the barb column.

[0015] Preferably, the lower end of the pressing block is in contact with the upper surface of the supporting locking piece.

[0016] By adopting the above technical solution, the supporting locking piece can be deformed under the extrusion of the pressing block so that the upper end of the first contact terminal maintains a gap with the top surface of the mounting groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are: the FPC connector with stable contact:

[0018] 1. By reserving deformation gaps on both sides of the terminal, the terminal can move up and down by deformation when in contact with the FPC. Even if there is a slight drop between adjacent pins, there will be no contact problem resulting in poor contact.

[0019] 2. After the protective seat is inserted into the housing, it is connected to the support locking piece and the barb locking piece at one end of the first contact terminal and the second contact terminal respectively, so that the first contact terminal and the second contact terminal can be stably installed after being inserted into the housing without loosening of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the shell and the backrest of the utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the cross-section surface connecting the protection seat and the positioning block of the utility model;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the cross-section surface of the second contact terminal and the barbed locking member of the utility model;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the first contact terminal and the supporting locking member of the utility model;

[0025] Figure 6 It is a schematic diagram of the overall three-dimensional explosion structure of the utility model.

[0026] In the figure: 1. housing; 2. mounting groove; 3. first contact terminal; 4. second contact terminal; 5. protection seat; 6. positioning block; 7. backrest; 8. support locking piece; 9. anti-off rod 1; 10. pressing block; 11. barb locking piece; 12. anti-off rod 2; 13. barb column; 14. anti-off hook. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 The utility model provides a technical solution: a stable contact FPC connector, comprising: a shell 1, an inner surface of the shell 1 is provided with a mounting groove 2, and a first contact terminal 3 and a second contact terminal 4 are arranged inside the mounting groove 2, a protective seat 5 is inserted into one end of the shell 1, and positioning blocks 6 are fixedly arranged on the side surfaces of both ends of the protective seat 5, and a backrest 7 is fixedly arranged at both ends of the shell 1.

[0029] The first contact terminal 3 is fixedly arranged at both ends of the supporting locking piece 8, and the supporting locking piece 8 is of U-shaped design, and an anti-dropout rod 9 is fixedly arranged on one side of the lower end of the supporting locking piece 8, and the side surface of the end of the first contact terminal 3 facing the outside of the shell 1 is designed to be bent toward each other, and a gap is left between the bent end of the first contact terminal 3 and the inner upper surface of the mounting groove 2 and the upper surface of the anti-dropout rod 9, and the second contact terminal 4 is fixedly arranged with a barbed locking piece 11 and an anti-dropout rod 12 at one end facing the protective seat 5, and the anti-dropout rod 12 and one end of the anti-dropout rod 9 are both fixedly provided with an anti-dropout hook 14, and the side surface of the end of the second contact terminal 4 facing the outside of the shell 1 is designed to be bent toward each other, and a gap is left between the bent end of the second contact terminal 4 and the inner upper and lower surfaces of the mounting groove 2, and the first contact terminal 3 and the second contact terminal 4 can maintain stable contact with the FPC by deformation through the setting of the gap between the first contact terminal 3 and the second contact terminal 4 and the mounting groove 2.

[0030] A pressing block 10 is fixedly provided at the lower end of the protective seat 5, and gaps are left between the pressing blocks 10, and the pressing blocks 10 are evenly distributed at the lower end of the protective seat 5. The barb locking piece 11 is a rod-shaped design with a barb at one end. The anti-detachment hook 14 is snap-fitted with the lower end of the shell 1. A barb column 13 is fixedly provided between two adjacent pressing blocks 10, and the barb column 13 is snap-fitted with the barb locking piece 11. The lower end of the pressing block 10 is in contact with the upper surface of the support locking piece 8, so that the first contact terminal 3 and the second contact terminal 4 can be stably installed with the shell 1 through the protective seat 5.

[0031] Working principle: When using the FPC connector with stable contact, first insert the lower end of the protective seat 5 downward into the end of the shell 1 provided with the backrest 7. At this time, the protective seat 5 is kept in contact with the backrest 7 by the positioning block 6, so that the protective seat 5 will not shake inside one end of the shell 1. Then, press the protective seat 5 to align the first contact terminal 3 with the mounting groove 2 through the support locking piece 8 and insert it into the shell 1. At this time, the support locking piece 8 is squeezed by the pressing block 10, and the support locking piece 8 is deformed so that the upper end of the first contact terminal 3 is pressed down to maintain a gap with the upper surface of the mounting groove 2, and the lower end of the first contact terminal 3 is in contact with the lower surface of the mounting groove 2 through the anti-slip rod 9 and a gap is left between the first contact terminal 3 and the anti-slip rod 9 to ensure the deformation space, so that the first contact terminal 3 can be more stably plugged in. At this time, the anti-slip rod 9 is installed with the shell 1 through the anti-slip hook 14 to further ensure the stable installation of the first contact terminal 3.

[0032] Then, the second contact terminal 4 is inserted into the housing 1 through the barb locking piece 11 to align with the mounting groove 2. At this time, one end of the barb locking piece 11 is deformed under the extrusion of the barb column 13 to let the barb column 13 pass, and the anti-detachment hook 14 at one end of the anti-detachment rod 12 pulls the second contact terminal 4 in the opposite direction after passing over the housing 1. The second contact terminal 4 is installed with the housing 1 through the anti-detachment hook 14, and the second contact terminal 4 is stably installed in coordination with the barb locking piece 11 and the barb column 13. The second contact terminal 4 ensures space for deformation through the bending setting of the end portion, so that the second contact terminal 4 can be more stably plugged in.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable contact FPC connector, comprising a housing (1), an inner surface of the housing (1) being provided with a mounting groove (2), and a first contact terminal (3) and a second contact terminal (4) being arranged inside the mounting groove (2), and a protective seat (5) being plugged into one end of the housing (1), characterized in that: Positioning blocks (6) are fixedly provided on the side surfaces at both ends of the protection seat (5), and backrests (7) are fixedly provided on both ends of the housing (1).

2. The FPC connector with stable contact according to claim 1, characterized in that: The first contact terminal (3) is fixedly arranged at both ends of the support locking member (8), and the support locking member (8) is of U-shaped design. An anti-dropout rod (9) is fixedly arranged on one side of the lower end of the support locking member (8). The side surface of one end of the first contact terminal (3) facing the outside of the housing (1) is designed to be bent towards each other, and a gap is left between the bent end of the first contact terminal (3) and the inner upper surface of the mounting groove (2) and the upper surface of the anti-dropout rod (9).

3. The FPC connector with stable contact according to claim 1, characterized in that: A pressing block (10) is fixedly arranged at the lower end of the protection seat (5), gaps are left between the pressing blocks (10), and the pressing blocks (10) are evenly distributed at the lower end of the protection seat (5).

4. The FPC connector with stable contact according to claim 1, characterized in that: The end of the second contact terminal (4) facing the protective seat (5) is fixedly provided with a barb locking piece (11) and a second anti-dropout rod (12), and one end of the second anti-dropout rod (12) and the first anti-dropout rod (9) are both fixedly provided with an anti-dropout hook (14), and the side surface of the end of the second contact terminal (4) facing the outside of the housing (1) is designed to be bent towards each other, and a gap is left between the bent end of the second contact terminal (4) and the upper and lower surfaces inside the mounting groove (2).

5. The FPC connector with stable contact according to claim 4, characterized in that: The barb locking piece (11) is of a rod-shaped design with a barb provided at one end, and the anti-drop hook (14) is mounted in a snap-fit ​​manner on the lower end of the housing (1).

6. The FPC connector with stable contact according to claim 3, characterized in that: A barb column (13) is fixedly arranged between two adjacent pressing blocks (10), and the barb column (13) is mounted in engagement with the barb locking piece (11).

7. The FPC connector with stable contact according to claim 3, characterized in that: The lower end of the pressing block (10) is in contact with the upper surface of the supporting locking piece (8).

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