FPC connector

Abstract

The utility model discloses a flexible printed circuit (FPC) connector, which comprises a rubber body, a cover and a wire bonding terminal, one end of the rubber body is provided with a flat cable plug-in groove, the other end of the rubber body is provided with a wire plug-in groove, the rubber body is internally provided with a wire bonding terminal accommodating cavity, and the wire bonding terminal is inserted into the wire bonding terminal accommodating cavity through the wire plug-in groove; the colloid is provided with a buckle structure used for preventing the flat cable from falling off. The wire bonding terminal is provided with an anti-falling structure which is used for preventing the wire bonding terminal from falling off from the colloid; and the cover is positioned outside the colloid and is used for fixing the wire bonding terminal. By adopting the FPC connector provided by the utility model, the direct connection of the wire rod and the flat cable and the arrangement of an anti-dropping and buckling structure can be realized, the problem that the terminal, the flat cable and the wire rod may drop due to the absence of PCB welding fixation is solved, the stability and the connection efficiency of the direct connection of the wire rod and the flat cable are effectively improved, the production efficiency is improved, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flexible ribbon cable connection technology, specifically to an FPC connector. Background Technology

[0002] Flexible flat cable (FFC), also known as flexible flat cable, is a signal transmission component that uses FPC connectors in conjunction with electronic connectors to achieve signal transmission. Flexible printed circuit (FPC) is characterized by high precision and high density, making it suitable for electronic devices that require high flexibility and complex circuit designs. FPC cable is a type of FPC. Most FPC connectors used in the market connect FFC cable to PCB.

[0003] In the prior art:

[0004] Document 1 (CN118318359A) discloses a connector, a connector assembly, and a cable with connectors. A coaxial cable 10 is connected to an antenna module substrate B2 via a relay FPC substrate. Two single-core coaxial connectors C1 and a WTB (Wire-to-Board Connector) connector C2 are mounted on the relay FPC substrate. The coaxial cable 10 is connected to the coaxial connectors C1, and multiple discrete cables 15 are connected to the WTB connector C2. The other end of each discrete cable 15 is connected to the main substrate B1 to transmit power signals and / or control signals. In this scheme, to connect the wire ends to the FPC connector, the FPC connector must first connect the ribbon cable to the PCB board, and then the WTB connector must connect the PCB board to the wires. This operation procedure is complex and cumbersome, the soldering operation is time-consuming, and quality problems are prone to occur, seriously affecting connection efficiency and even production efficiency, and greatly increasing costs.

[0005] Document 2 (CN209001293U) discloses an adapter for converting to FPC, including a housing 1 and several terminals 2. The terminals 2 are arranged side by side inside the housing 1. The housing 1 has an accommodating cavity 11 with openings at both ends. Each terminal has a first end 21 and a second end 22. After the terminal 2 is inserted into the accommodating cavity 11 from one end of the housing 1, the first end 21 of the terminal 2 is used to connect to an FPC 3, and the second end 22 is used to connect to a wire-to-board connector 4. The terminal also includes a fixing part 23. When the terminal 2 is inserted from one side of the housing 1, the fixing part 23 is fixed to the upper and lower inner walls of the accommodating cavity 11. The FPC adapter in Document 2 still needs to be connected to a separately provided wire-to-board connector to realize the connection of FPC cables and wires. The operation procedure is complicated and inefficient. Moreover, the connection structure between the FPC adapter and the wire-to-board connector is prone to detachment, resulting in poor stability in actual use and seriously affecting connection efficiency and even production efficiency. At the same time, although the terminal in Document 2 has a fixing part, the installation stability of the protruding fixing part is poor, and it is easy to detach in actual use.

[0006] In the aforementioned prior art, FPC connectors are used to connect the ribbon cable and the PCB board, and then WTB connectors are used to connect the PCB board and the wires. This process is complex, soldering is time-consuming, and the yield rate is low. It is also inconvenient to install and remove the wires and ribbon cables, and replacement is difficult. The installation cost is high and it is not practical. Furthermore, the existing FPC adapters still need to be connected to WTB wire-to-board connectors to connect the FPC ribbon cable and the wires. The WTB wire-to-board connectors, ribbon cables, and terminals are all prone to falling off due to external forces, which affects the connection stability and seriously affects the connection efficiency. Utility Model Content

[0007] To address the aforementioned issues, this invention provides an FPC connector that enables direct connection between FPC cables and wires, thereby improving connection stability and reliability, extending service life, and reducing costs.

[0008] This utility model provides an FPC connector, comprising: a gel body, a cover, and a bonding terminal. One end of the gel body has a ribbon cable insertion groove, and the other end has a wire insertion groove. The gel body has a bonding terminal receiving cavity, through which the bonding terminal is inserted into the bonding terminal receiving cavity. One end of the bonding terminal is connected to a wire, and the other end is connected to a ribbon cable. The gel body has a snap-fit ​​structure to prevent the ribbon cable from falling off. The bonding terminal has an anti-detachment structure to prevent it from coming out. The cover is located outside the gel body and is used to fix the bonding terminal after it is inserted into the wire insertion groove.

[0009] Furthermore, the buckle structure is disposed in the cable connector slot, and the buckle structure includes a buckle block, with a buckle slot provided at the position of the buckle block corresponding to the position of the cable.

[0010] Furthermore, the cable connector slot is provided with a guide structure to guide the cable when it is inserted, preventing interference; the guide structure may be a wedge-shaped block.

[0011] Furthermore, the colloid has a stop portion on the side near the ribbon cable connector slot to prevent the head of the bonding terminal from tilting up after being inserted into the colloid and affecting the insertion of the ribbon cable; the stop portion has a C-shaped bending structure.

[0012] Furthermore, the anti-detachment structure includes a terminal clip, and the adhesive body has a terminal hole. When the bonding terminal is inserted into the adhesive body, the terminal clip will spring into the terminal hole to form a stop and prevent the terminal from falling off; the terminal clip is bent.

[0013] Furthermore, the anti-detachment structure also includes a crimping part, and the cover is provided with a pressing block. After the cover is closed, the pressing block will be inserted into the terminal hole to press the crimping part, forming a secondary blocking effect to further prevent the terminal from falling off.

[0014] Furthermore, the cap is provided with multiple cap clips for inserting into the colloid for fixation, thereby improving stability.

[0015] Furthermore, the wire-punch terminal is provided with a foolproof structure, and the wire insertion slot of the colloid is provided with a foolproof groove. When the wire-punch terminal is inserted in reverse, the foolproof structure will interfere with the colloid to prevent the terminal from being inserted, thus protecting the colloid and preventing damage to the colloid and the wire-punch terminal. Only when inserted in the correct direction can the foolproof structure of the wire-punch terminal be inserted into the foolproof groove of the colloid and correctly inserted into the colloid.

[0016] Furthermore, the punch-down terminal includes a bullet end for connecting the ribbon cable. The bullet end has bent portions on both sides to enhance the structural strength of the terminal and prevent the terminal from being bent or broken. The bullet end of the punch-down terminal has a rounded corner structure to ensure that the ribbon cable is not damaged when plugged in or unplugged. At the same time, the punch-down terminal includes a wire connection end and a ribbon cable connection end. Both the wire connection end and the ribbon cable connection end of the punch-down terminal have a chamfered structure to prevent the edges from being too sharp and damaging the ribbon cable and the wire.

[0017] Beneficial effects:

[0018] (1) The FPC connector body adopts an integrated structure, which can realize a fast and stable direct connection between the wire and the ribbon cable compared with the traditional soldering connection or adapter structure. The addition of an anti-detachment structure makes the wire-punch terminal more stable in the connector. On the one hand, it can prevent the wire-punch terminal from coming off due to external force, and on the other hand, it can prevent the connector from being damaged due to the instability of the wire-punch terminal. This utility model adopts an anti-detachment structure with terminal buckle and crimping structure, which can further improve the stability of the wire-punch terminal, thereby ensuring the stability of the connection between the wire and the ribbon cable.

[0019] (2) The FPC connector cable insertion slot is provided with a snap-fit ​​structure, and the cable is provided with a slot corresponding to the snap-fit ​​structure to prevent the cable from falling off. At the same time, a guide structure is also provided so that the cable can be inserted along the guide structure, which facilitates the insertion of the cable and will not cause interference. The side of the colloid near the cable insertion slot is provided with a stop part to prevent the head of the wire-punch terminal from tilting up after being inserted into the colloid and affecting the insertion of the cable.

[0020] (3) The FPC connector's bonding terminal is equipped with a foolproof structure. When the bonding terminal is inserted in reverse, the foolproof structure will interfere with the colloid to prevent the bonding terminal from being inserted and to prevent the colloid from being damaged. At the same time, the bonding terminal's end bullet has bent portions on both sides. The two bent portions surround the end bullet side, which can effectively enhance the strength of the terminal structure and make the terminal less prone to bending, breakage, and other risks. Meanwhile, the wire and ribbon cable connection ends of the bonding terminal are all chamfered to prevent the edges from being too sharp and damaging the ribbon cable and wire.

[0021] The FPC connector involved in this utility model can eliminate the soldering step, PCB connection board and WTB connector, and realize the direct connection between wire and ribbon cable. At the same time, it is equipped with anti-detachment and buckle structures to solve the problem that terminals, ribbon cables and wires may fall off when there is no PCB board soldering fixation. It effectively improves the stability and connection efficiency of the direct connection between wire and ribbon cable, thereby improving production efficiency and reducing costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the ribbon cable and FPC connector of this utility model;

[0023] Figure 2 This is a schematic diagram of the FPC connector colloid structure of this utility model;

[0024] Figure 3 This is a partial enlarged view of the ribbon cable connector slot of this utility model;

[0025] Figure 4 This is a left sectional view of the FPC connector of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection structure between the cover and the colloid of the FPC connector of this utility model;

[0027] Figure 6 This is a schematic diagram of the cover of the FPC connector of this utility model;

[0028] Figure 7 This is a front view of the FPC connector of this utility model;

[0029] Figure 8 This is a front view of the bonding terminal of the FPC connector of this utility model;

[0030] Figure 9 This is a top view of the bonding terminal of the FPC connector of this utility model;

[0031] Figure 10 This is a schematic diagram of the wiring of this utility model.

[0032] Wherein: 10-colloid, 20-cap, 30-wire terminal, 40-ribbon cable, 11-wire connector slot, 12-ribbon cable connector slot, 13-stop part, 14-block, 15-guide structure, 16-terminal hole, 17-foolproof groove, 21-cap buckle, 22-pressing block, 31-terminal buckle, 32-crimping part, 33-end bullet piece, 34-foolproof structure, 35-wire connection end, 36-ribbon cable connection end, 41-slot. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification.

[0034] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical, and operation may be made without departing from the spirit and scope of this disclosure. The following detailed description should not be considered limiting, and the scope of the embodiments of the present application is defined only by the claims of the published patents. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application. Spatially related terms, such as “upper,” “lower,” “left,” “right,” “below,” “below,” “lower part,” “above,” “upper part,” etc., may be used herein to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0035] Figure 1-9 This utility model discloses an FPC connector, comprising: a colloid 10, a cover 20, and a bonding terminal 30. One end of the colloid 10 has a wire insertion groove 11, and the other end has a ribbon cable insertion groove 12. The colloid 10 contains a bonding terminal receiving cavity. The bonding terminal 30 is inserted into the bonding terminal receiving cavity through the wire insertion groove 11. The bonding terminal includes a wire connection end 35 and a ribbon cable connection end 36. The colloid 10 has a snap-fit ​​structure to prevent the ribbon cable 40 from falling off. The bonding terminal has an anti-detachment structure to prevent the bonding terminal 30 from falling out of the colloid 10. The cover 20 is located outside the colloid 10 and is used to fix the bonding terminal 30 after it is inserted into the bonding terminal receiving cavity.

[0036] The snap-fit ​​structure of the colloid 10 is disposed in the ribbon cable connector slot 12. The snap-fit ​​structure includes a snap block 14, and the ribbon cable 40 has a slot 41 at the position corresponding to the snap block 14 (see Figure 3 , 10 The ribbon cable connector slot 12 is also equipped with a guide structure 15, which guides the ribbon cable 40 when it is inserted to prevent interference. The guide structure can be a wedge-shaped block (see...). Figure 3 ).

[0037] A stop 13 is provided on one side of the cable insertion slot 12 of the wire bonding terminal receiving cavity of the colloid 10, to prevent the head of the wire bonding terminal 30 from tilting up after being inserted into the colloid and affecting the insertion of the cable. The stop is a C-shaped bent structure (see [link]). Figure 4 ).

[0038] The anti-disengagement structure of the punch-on terminal 30 includes a terminal latch 31 and a crimping part 32. The adhesive body 10 is provided with a terminal hole 16. When the punch-on terminal 30 is inserted into the adhesive body 10, the terminal latch 31 will spring into the terminal hole 16 to form a stop. The terminal latch 31 is bent (see...). Figure 4 The cover 20 is provided with a pressing block 22. After the cover 20 is closed, the pressing block 22 will be inserted into the terminal hole 16 to press the crimping part 32, preventing the wire bonding terminal 30 from falling off. The pressing block 22 can be a U-shaped pressing block (see...). Figure 4 , 6 ).

[0039] The cap 20 is provided with multiple cap clips 21. Due to the overall length of the cap 20, at least three cap clips 21 are provided to secure the cap 20 to the colloid 10, thereby improving stability (see [link]). Figure 5-6 ).

[0040] The wire-punch terminal 30 is also provided with a foolproof structure 34. A foolproof groove 17 is provided at the wire insertion slot 11 position of the colloid 10. When the wire-punch terminal 30 is inserted in reverse, the foolproof structure 34 interferes with the colloid 10, preventing the wire-punch terminal 30 from being inserted, thus protecting the colloid 10 and preventing damage to both the colloid 10 and the wire-punch terminal 30. Only when inserted in the correct direction can the foolproof structure 34 of the wire-punch terminal 30 be inserted into the foolproof groove 17 of the colloid 10 and correctly inserted into the colloid 10 (see [link]). Figure 7-8 ).

[0041] The punch-down terminal 30 also includes an end spring tab 33 for connecting the ribbon cable 40. The end spring tab 33 has bent portions on both sides (see...). Figure 8-9 The two bends surround the end bullet piece side, enhancing the terminal structure strength and making the terminal less prone to bending, breakage, or other risks; the end bullet piece 33 of the wire bonding terminal 30 adopts a rounded corner structure (see...). Figure 4 , 8This ensures that the ribbon cable 40 will not be damaged when plugged in or unplugged; at the same time, the wire connection end 35 and the ribbon cable connection end 36 of the punch terminal 30 are both chamfered to prevent the edges from being too sharp and damaging the ribbon cable and wire.

[0042] Preparation and use process of this utility model:

[0043] 1) The colloid 10, cap 20 and wire bonding terminal 30 are processed and prepared. The mold of colloid 10 needs to be formed by a slider. In order to ensure that no burrs are generated, the ribbon cable plug groove 12 is made into a countersunk structure to facilitate mold forming. The ribbon cable plug groove 12 of the colloid 10 wire bonding terminal receiving cavity is processed with a stop part 13 on one side to prevent the head of the wire bonding terminal 30 from lifting up after being inserted into the colloid. The end bullet piece 33 of the wire bonding terminal 30 is processed into a rounded corner structure. At the same time, the two sides of the end bullet piece 33 are bent. The wire connection end 35 and the ribbon cable connection end 36 of the wire bonding terminal 30 are both processed with chamfered structure.

[0044] 2) Insert the wire-punch terminal 30 into the wire-punch terminal receiving cavity of the colloid 10 through the wire insertion groove 11. The terminal latch 31 of the wire-punch terminal 30 will spring into the terminal hole 16 to form a stop.

[0045] 3) Install the cover 20 on the outside of the colloid 10, insert the pressing part 22 of the cover 20 into the terminal hole 16 to press the pressing part 32, and prevent the wire bonding terminal 30 from falling off;

[0046] 4) Insert the wire into the wire connector slot 11 and into the wire connection end 35 of the punch-down terminal 30;

[0047] 5) Insert the ribbon cable 40 into the ribbon cable connector slot 12. When inserting, make the ribbon cable 40 go in along the chamfered structure 15 and engage the slot 41 of the ribbon cable 40 with the snap block 14 of the glue snap structure to prevent the ribbon cable from falling off.

[0048] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. An FPC connector, characterized in that: The device includes a gel, a cap, and a bonding terminal. One end of the gel has a ribbon cable insertion groove, and the other end has a wire insertion groove. The gel contains a bonding terminal receiving cavity, through which the bonding terminal is inserted. The gel has a snap-fit ​​structure to prevent the ribbon cable from falling off. The bonding terminal has an anti-detachment structure to prevent it from coming out of the gel. The cap is located outside the gel and is used to secure the bonding terminal.

2. The FPC connector according to claim 1, characterized in that: The buckle structure is set in the cable connector slot. The buckle structure includes a buckle block, and the cable has a buckle slot at the position corresponding to the buckle block.

3. The FPC connector according to claim 1, characterized in that: The cable connector slot is also equipped with a guide structure, which can guide the cable when it is inserted.

4. The FPC connector according to claim 1, characterized in that: The wiring slot of the terminal receiving cavity is provided with a stop to prevent the terminal from tilting up.

5. The FPC connector according to claim 1, characterized in that: The anti-detachment structure includes a terminal buckle, and the colloid has a terminal hole. The terminal buckle springs into the terminal hole to form a stop.

6. The FPC connector according to claim 5, characterized in that: The anti-detachment structure includes a crimping part, and the cover is provided with a pressing block part, which is inserted into the terminal hole to press the crimping part.

7. The FPC connector according to any one of claims 1-6, characterized in that: The lid is equipped with multiple lid clips that connect to the adhesive.

8. The FPC connector according to any one of claims 1-6, characterized in that: The bonding terminal is equipped with a foolproof structure.

9. The FPC connector according to any one of claims 1-6, characterized in that: The punch-down terminal includes a bullet end for connecting the ribbon cable, and the bullet end has bent portions on both sides.

10. The FPC connector according to claim 9, characterized in that: The bullet tip has a rounded corner structure, and the wire terminal includes a wire connection end with a chamfered structure and a ribbon cable connection end.

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