Connector with automatic latching structure

Abstract

A connector with an automatic latching structure. The connector comprises fixed elastic pieces and an actuator. Each fixed elastic piece consists of a connecting plate, a first support arm and an elastic arm, wherein the first support arm is disposed on one side of the connecting plate; the elastic arm is disposed at the end of the first support arm away from the connecting plate; and the elastic arm comprises an elastic portion, a bent-back portion and a contact portion in sequence from the end close to the first support arm to the end away from the first support arm. A positioning arm is disposed at the end of a pressing plate close to each connecting plate. A hook capable of engaging with a flexible flat cable plug is provided at the end of the positioning arm away from the pressing plate. A surface of the contact portion is pressed against an inner wall of the pressing plate. A pressing portion and positioning portions are provided on a surface of the actuator. The positioning portions can be fitted and connected to a connector housing. The actuator is made of plastic. The connector solves the technical problem in the prior art of damage caused by metal fatigue easily occurring due to an actuator being made of metal.

Description

Connector with automatic locking structure TECHNICAL FIELD

[0001] The present application relates to the field of connectors, in particular to a connector with automatic locking structure. BACKGROUND

[0002] FPC connector (Flexible Printed Circuit Connector), that is, a flexible printed circuit board connector, is an electronic component specially used for connecting two or more flexible printed circuit boards (FPC) or connecting a flexible printed circuit board to a hard circuit board. FPC connectors are widely used in modern electronic devices, and the structure of the FPC connector usually includes a socket, a pin, a fixing part, and possibly a locking mechanism. The socket part is designed with contacts corresponding to the FPC, and the pin is fixed on the FPC. When the FPC is inserted into the socket, the pin is in close contact with the contact, thereby achieving electrical connection. The fixing part and the locking mechanism are used to ensure that the FPC can remain stable after being inserted and prevent accidental falling off.

[0003] The locking mechanism in the FPC connector usually includes a fixed spring and an actuator, both of which are installed in the connector housing. The fixed spring is provided with a limiting hook for engaging the cable ear. Pressing the actuator can extrude the fixed spring to deform, so that the limiting hook is separated from the cable ear.

[0004] In the existing locking mechanism for the connector, since the actuator is made of metal, when applied to a car, the working environment is relatively harsh. When the car is running, the connector will be in a high-vibration environment, which is prone to metal fatigue and damage, and has a short service life. In addition, the limiting hook for engaging the cable ear is usually provided on the fixed spring. After the actuator is pressed on the fixed spring for several times, the part of the fixed spring that is extruded is prone to deformation, which makes it difficult for the limiting hook to be separated from the cable.

[0005] SUMMARY

[0006] The present application provides a connector with automatic locking structure, which solves the technical problem of metal fatigue and damage caused by the metal composition in the prior art.

[0007] The technical solution of the present application is as follows:

[0008] The utility model provides a connector with automatic lock structure, including fixed spring and actuator, the fixed spring is by connecting plate, first support arm and elastic arm constitutes, connecting plate can be installed in the connector shell, first support arm sets up in the side of connecting plate, the elastic arm sets up in the end of first support arm away from connecting plate, the elastic arm is from close to first support arm one end to away from first support arm one end in proper order elastic part, return bending part and contact part, elastic part is bent to the direction of connecting plate, return bending part is bent to the direction away from connecting plate, the actuator is by pressing plate and positioning arm constitutes, positioning arm sets up in the end of pressing plate close to connecting plate, the end of positioning arm away from pressing plate is provided with the hook that can with flat cable plug interlock, the surface of contact part is pressed tightly with the inner wall of pressing plate, the surface of pressing plate is provided with pressing part and positioning part, and positioning part can be connected with the cooperation of connector shell, the actuator is by plastic constitutes, and the actuator can extrude contact part and make elastic part produce elastic deformation.

[0009] Further, the second support arm is provided on the connecting plate, the second support arm is aligned with the first support arm, and a limiting portion for limiting the position of the actuator is arranged at the end of the second support arm away from the first support arm, and the limiting portion is bent towards the side of the second support arm close to the connecting plate.

[0010] Further, the second support arm is provided on the connecting plate, the second support arm is aligned with the first support arm, and a limiting portion for limiting the position of the actuator is arranged at the end of the second support arm away from the first support arm, and the limiting portion is bent towards the side of the second support arm close to the connecting plate.

[0011] Further, the inner wall of the pressing plate is provided with a fixed slot, and the end of the contact part away from the return bending part can be inserted into the fixed slot.

[0012] Further, the connecting plate is further provided with a welding portion, and a groove is arranged on the welding portion.

[0013] Further, the connecting plate is further provided with a positioning plate.

[0014] Further, the edge of the pressing plate is provided with a clearance opening, and the elastic part is arranged in the clearance opening.

[0015] The working principle and beneficial effects of the present application are as follows:

[0016] 1. In the present application, the actuator is made of plastic, and the automatic lock function is realized by the fixed spring. Compared with the traditional metal actuator, it has higher anti-vibration ability and longer service life.

[0017] 2. In the present application, the hook is arranged on the actuator, and the hook interlocked with the flat cable plug is connected with the pressing plate through the positioning arm. The flat cable is directly controlled to be unlocked and locked by the actuator, which is more convenient to use and more reliable in structure, avoiding the situation that the actuator is difficult to press the fixed spring for unlocking after deformation. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be described in further detail below in connection with the accompanying drawings and detailed description.

[0019] Fig. 1 is a perspective view of the application;

[0020] Fig. 2 is a perspective view of the fixed spring in the application;

[0021] Fig. 3 is a perspective view of the actuator in the application;

[0022] Fig. 4 is a sectional view of the application;

[0023] Fig. 5 is an enlarged view of the partial section at A in Fig. 4;

[0024] Fig. 6 is a schematic view of the fixed spring and the actuator mounted in the connector housing in the application;

[0025] Fig. 7 is a schematic view of the sectional structure of the limiting assembly in Example 2 of the application mounted in the interior of the connector housing;

[0026] Fig. 8 is a schematic view of the sectional structure of the limiting assembly in Example 2 of the application;

[0027] Fig. 9 is a schematic view of the sectional structure of the check portion in Example 2 of the application.

[0028] Fig. 1 is a perspective view of the application; Fig. 2 is a perspective view of the fixed spring in the application; Fig. 3 is a perspective view of the actuator in the application; Fig. 4 is a sectional view of the application; Fig. 5 is an enlarged view of the partial section at A in Fig. 4; Fig. 6 is a schematic view of the fixed spring and the actuator mounted in the connector housing in the application; Fig. 7 is a schematic view of the sectional structure of the limiting assembly in Example 2 of the application mounted in the interior of the connector housing; Fig. 8 is a schematic view of the sectional structure of the limiting assembly in Example 2 of the application; Fig. 9 is a schematic view of the sectional structure of the check portion in Example 2 of the application. 1, fixed spring; 11, connecting plate; 12, first support arm; 13, elastic arm; 131, elastic portion; 132, return portion; 133, contact portion; 14, welding portion; 141, groove; 15, second support arm; 151, limiting portion; 152, insertion plate; 16, positioning plate; 2, actuator; 21, pressing plate; 211, pressing portion; 212, positioning portion; 213, fixed insertion slot; 214, clearance opening; 22, positioning arm; 221, hook; 3, limiting assembly; 301, housing; 302, connecting rod; 303, coil spring; 304, swing plate; 305, contact block; 306, transmission shaft; 307, roller; 308, ratchet wheel; 309, elastic pawl; 310, rubber ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below in connection with the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative effort, are within the protection scope of the application.

[0030] As shown in FIG. 1 to FIG. 9, a connector with automatic locking structure, comprising a fixed spring 1 and an actuator 2, the fixed spring 1 is composed of a connecting plate 11, a first support arm 12 and an elastic arm 13, the connecting plate 11 can be installed in the connector housing, the first support arm 12 is arranged on one side of the connecting plate 11, the elastic arm 13 is arranged on the end of the first support arm 12 away from the connecting plate 11, the elastic arm 13 is sequentially provided with an elastic part 131, a back bending part 132 and a contact part 133 from the end close to the first support arm 12 to the end away from the first support arm 12, the elastic part 131 is bent towards the connecting plate 11, the back bending part 132 is bent away from the connecting plate 11, the actuator 2 is composed of a pressing plate 21 and a positioning arm 22, the positioning arm 22 is arranged on the end of the pressing plate 21 close to the connecting plate 11, the end of the positioning arm 22 away from the pressing plate 21 is provided with a hook 221 which can be engaged with the cable plug, the surface of the contact part 133 is pressed against the inner wall of the pressing plate 21, the connecting plate 11 is further provided with a welding part 14, the welding part 14 is provided with a groove 141, the surface of the pressing plate 21 is provided with a pressing part 211 and a positioning part 212, the positioning part 212 can be connected with the connector housing, the inner wall of the pressing plate 21 is provided with a fixed slot 213, the end of the contact part 133 away from the back bending part 132 can be inserted into the fixed slot 213, preventing the contact part 133 from being separated from the pressing plate 21.

[0031] The connecting plate 11 is further provided with a second support arm 15, the second support arm 15 is aligned with the first support arm 12, the end of the second support arm 15 away from the first support arm 12 is provided with a limiting part 151 for limiting the position of the actuator 2, the limiting part 151 is bent towards the side of the second support arm 15 close to the connecting plate 11, the limiting part 151 can press the side wall of the actuator 2, preventing the actuator 2 from being separated from the connector housing, the end of the second support arm 15 away from the first support arm 12 is provided with a plug plate 152 which can be matched with the connector housing, the plug plate 152 is bent towards the side of the second support arm 15 close to the first support arm 12, the plug plate 152 can be inserted into the fixed slot in the connector housing, preventing the fixed spring 1 from being separated from the connector housing.

[0032] The connecting plate 11 is further provided with a positioning plate 16, the connector housing is provided with a spring fixing slot, the connecting plate 11, the first support arm 12, the second support arm 15 and the positioning plate 16 can be arranged in the spring fixing slot, so that the fixed spring 1 is fixedly installed in the connector housing.

[0033] The edge of the pressing plate 21 is provided with a clearance opening 214, the pressing plate 21 extrudes the contact part 133 to deform the elastic part 131, at the same time, the pressing plate 21 moves downward to make the hook 221 separated from the cable or facilitate the cable to be inserted into the connector housing, when the pressing plate 21 approaches the connector housing, the elastic part 131 passes through the clearance opening 214, preventing the elastic part 131 from pressing against the pressing plate 21 and unable to press.

[0034] The connector with the automatic locking structure of the embodiment, the actuator 2 is composed of plastic, and the automatic locking function is realized through the fixed elastic sheet 1. Compared with the traditional metal actuator 2, the connector has higher anti-vibration capability and longer service life. The hook 221 is arranged on the actuator 2, the hook 221 engaged with the wire harness plug is connected with the pressing plate 21 through the positioning arm 22, the wire harness is directly controlled to be unlocked and locked through the actuator 2, the fixed elastic sheet 1 is used for resetting and positioning of the actuator 2, the connector is more convenient to use and more reliable in structure, and the situation that the actuator 2 is deformed and cannot be pressed to unlock the fixed elastic sheet 1 is avoided.

[0035] In the embodiment two, on the basis of the embodiment one, in order to prevent the influence of vibration on the connection, the limiting assembly with the anti-vibration function is further arranged, two limiting assemblies 3 are symmetrically arranged on the two sides in the connector housing, and are used for automatic locking in cooperation with the hook.

[0036] The limiting assembly comprises a housing 301, a connecting rod 302, a coil spring 303, a limiting part and a non-return part. The housing 301 is fixedly arranged on the two sides in the rubber core, the connecting rod 302 is rotatably arranged in the two housings 301, the coil spring 303 is fixedly arranged in the two housings 301, the coil spring 303 is fixedly connected with the connecting rod 302, the limiting part is arranged on the connecting rod 302 and is used for cooperation with the connecting rod 302 to rotate, and the non-return part is arranged on the limiting part and is used for fixing the wire harness.

[0037] Specifically, when the wire harness is fixed in the rubber core, the wire harness is in contact with the limiting part after being inserted into the rubber core, the limiting part swings through the connecting rod 302 by a certain angle, the connecting rod 302 rotates in the housing 301, the coil spring 303 is arranged to ensure that the limiting part is always in contact with the wire harness, until the wire harness moves to the fixed position, the wire harness is limited to be extracted through the arrangement of the non-return part, and the wire harness is further fixed. When unlocking is needed, the limiting part is separated from the contact position of the wire harness only by pressing the actuator 2, and the wire harness is unlocked.

[0038] The limiting part comprises a swing plate 304, a contact block 305, a transmission shaft 306 and a roller 307. The swing plate 304 is fixedly arranged on the extending end of the connecting rod 302, the contact block 305 is fixedly arranged on the end of the swing plate 304, the transmission shaft 306 is fixedly arranged on the other end of the swing plate 304, and the roller 307 is rotatably arranged on the transmission shaft 306. The roller 307 is hollow.

[0039] Specifically, with the movement of the wire harness, the roller 307 is pressed on the wire harness through the swing plate 304, the connecting rod 302 and the coil spring 303, so as to realize the function of fixing the wire harness.

[0040] The check portion comprises a ratchet wheel 308, an elastic pawl 309 and a rubber ring 310. The ratchet wheel 308 is fixedly installed on the two transmission shafts 306 and located inside the roller 307. The elastic pawl 309 is fixedly installed inside the two ratchet wheels 308 and engaged with the ratchet wheel 308. The rubber ring 310 is fixedly installed on the outer periphery of the two rollers 307.

[0041] Specifically, with the movement of the flat cable, the roller 307 is in contact with the flat cable, and the roller 307 rotates. The roller 307 drives the elastic pawl 309 to rotate. Since the position of the transmission shaft 306 is fixed, the elastic pawl 309 constantly overcomes the ratchet wheel 308, thereby realizing the rolling of the roller 307. When the flat cable is pulled out, the elastic pawl 309 abuts against the ratchet wheel 308, thereby fixing the relative position between the roller 307 and the swing plate 304. The setting of the rubber ring 310 can improve the friction and eliminate part of the vibration in the vibration process, thereby improving the connection strength.

[0042] The above only describes the preferred embodiment of the present application and should not be used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A connector with an automatic locking structure, comprising a fixed spring (1) and an actuator (2), the fixed spring (1) and the actuator (2) are detachably installed in a connector housing, characterized in that, The utility model relates to a connector fixing device, including: The fixed elastic sheet (1) is composed of connecting plate (11), first support arm (12) and elastic arm (13); The connecting plate (11) is detachable installation in the connector shell, and the first support arm (12) is arranged on one side of the connecting plate (11), and the elastic arm (13) is arranged on the end of the first support arm (12) away from the connecting plate (11).

2. The connector with automatic locking structure according to claim 1, characterized in that, The elastic arm (13) is sequentially provided with elastic part (131), back bending part (132) and contact part (133) from the end close to the first support arm (12) to the end away from the first support arm (12); The elastic part (131) is bent to the connecting plate (11) direction; The back bending part (132) is bent to the direction away from the connecting plate (11).

3. The connector with automatic locking structure according to claim 2, wherein The actuator (2) is composed of pressing plate (21) and positioning arm (22), and the positioning arm (22) is arranged on the end of the pressing plate (21) close to the connecting plate (11), and the end of the positioning arm (22) away from the pressing plate (21) is provided with the hook (221) that can be mutually engaged with the wire plug; The surface of the contact part (133) is pressed tightly with the inner wall of the pressing plate (21), and the surface of the actuator (2) is provided with pressing part (211) and positioning part (212), the positioning part (212) can be connected with the connector shell, and the actuator (2) is composed of plastic.

4. The connector with automatic locking structure according to claim 3, characterized in that The actuator (2) can extrude the contact part (133) to make the elastic part (131) produce elastic deformation.

5. The connector with automatic locking structure according to claim 4, characterized in that: The connecting plate (11) is further provided with the second support arm (15), and the second support arm (15) is aligned with the first support arm (12); The end of the second support arm (15) away from the first support arm (12) is provided with the limiting part (151) for limiting the position of the actuator (2), and the limiting part (151) is bent to the side of the second support arm (15) close to the connecting plate (11).

6. The connector with automatic locking structure according to claim 5, characterized in that: The end of the second support arm (15) away from the first support arm (12) is provided with the plugboard (152) matched with the connector shell, and the plugboard (152) is bent to the side of the second support arm (15) close to the first support arm (12).

7. The connector with automatic locking structure according to claim 6, characterized in that: The inner wall of the pressing plate (21) is provided with the fixed slot (213), and the end of the contact part (133) away from the back bending part (132) can be inserted into the fixed slot (213).

8. The connector with automatic locking structure according to claim 7, characterized in that: The connecting plate (11) is further provided with the welding part (14), and the welding part (14) is provided with the groove (141).

9. The connector with automatic locking structure according to claim 8, characterized in that: The connecting plate (11) is further provided with the positioning plate (16).

10. The connector with automatic locking structure according to claim 9, characterized in that: The edge of the pressing plate (21) is provided with the avoidance opening (214), and the elastic part (131) is arranged in the avoidance opening (214).

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