CN219040831U

CN219040831U - Connector with CPA pre-fixing structure

Info

Publication number: CN219040831U
Application number: CN202222937676.6U
Authority: CN
Inventors: 王超
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-05-16
Anticipated expiration: 2032-11-04
Also published as: WO2024094143A8; WO2024094143A1

Abstract

A connector with a CPA pre-fixing structure relates to the technical field of connectors, a connector body, a shell and a CPA structure, wherein the connector body is detachably spliced with the shell through a locking device; the locking device comprises an elastic arm, the elastic arm is pressed to enable the locking device to be separated from the clamping connection, and the connector body and the shell are in a separable state; CPA structure, including the base member and set up the first joint portion in the base member both sides, set up the fixed orifices that holds at least part elastic arm on the base member, the connector body has the gliding spout of holding first joint portion and sets up first bayonet socket and the second bayonet socket in spout both sides along first joint portion slip direction, and when first joint portion and first bayonet socket joint, at least part elastic arm inserts in the fixed orifices and prevents the elastic arm to be pressed. The arrangement of the pre-fixing position ensures that the automatic production is more reliable, and the machine only needs to complete the action of pushing in the CPA structure.

Description

Connector with CPA pre-fixing structure

Technical Field

The utility model relates to the technical field of connectors, in particular to a connector with a CPA pre-fixing structure.

Background

The function of the connector is to realize a hub for power and signal transmission. The reliability of the connector pairing directly influences the performance stability of the product. The electric connector is mainly used in the fields of communication, electronic equipment and the like, and with the rapid development of new energy automobiles, the performance requirements of related parts are higher and higher, and particularly, the high-speed performance is faster than the transmission before, so that the connector is widely applied in the automobile field. However, since the car vibrates frequently in use, it is easy to separate the connector body from the housing mounted thereon, so that the CPA structure is required to secure the connection of the connector body and the connector housing. CPA is an abbreviation for connector position assurance, connector position assurance. The prior art is not suitable for automatic assembly, and therefore a CPA structure with a pre-fixing structure with a connector is needed in the prior art to meet the requirement of automatic assembly.

Disclosure of Invention

An object of the present utility model is to provide a connector with CPA pre-fixing structure, comprising:

the connector comprises a connector body, a shell and a CPA structure, wherein the connector body is detachably spliced with the shell through a locking device; the locking device comprises an elastic arm, the elastic arm is pressed to enable the locking device to be separated from the clamping connection, and the connector body and the shell are in a separable state;

the CPA structure comprises a base body and first clamping parts arranged on two sides of the base body, wherein fixing holes for accommodating at least part of the elastic arms are formed in the base body, the connector body is provided with a sliding chute for accommodating the first clamping parts and a first bayonet and a second bayonet which are arranged on two sides of the sliding chute along the sliding direction of the first clamping parts, when the first clamping parts are clamped with the first bayonet, at least part of the elastic arms are inserted into the fixing holes and prevented from being pressed, when the first clamping parts are clamped with the second bayonet, at least part of the elastic arms are separated from the fixing holes, and the elastic arms are in a pressable state.

The locking device comprises a clamping bayonet arranged on the shell and a clamping protrusion arranged on the free end of the elastic arm, and the clamping bayonet and the clamping protrusion are matched and clamped.

The clamping protrusions are arranged in a plurality and uniformly arranged on the free ends.

The junction of elastic arm with the connector body is the tie point, the elastic arm through the joint protruding with the casing joint, the tie point to the bellied distance of joint with the joint protruding reaches the ratio of the distance of free end tip of elastic arm is not less than 1:8.

the connector body is provided with a clamping groove, a third bayonet is arranged on the side wall of the clamping groove, the CPA structure is provided with a convex rib which is suitable for being inserted into the clamping groove, a second clamping part which is used for being clamped with the third bayonet is arranged on the convex rib, and the second clamping part is clamped with the third bayonet.

The convex ribs are U-shaped shock absorption structures.

And a chamfer is arranged on the second clamping part.

The CPA structure is provided with a connecting arm, the connecting arm is provided with a clamping hook, and the clamping hook is clamped on the connector body.

The connector comprises a connector body and is characterized in that fixing plates are arranged on two sides of the connecting arm, and supporting plates for supporting the fixing plates are arranged on the connector body.

The surface of the CPA structure is provided with a non-slip protrusion.

The beneficial effects of the utility model are as follows: the CPA structure is arranged on the connector body, so that the elastic arm cannot be pressed downwards, and the phenomenon that the elastic arm moves downwards to drive the clamping protrusion due to misoperation is avoided. The lower surface of the fixing hole is abutted with the elastic arm from bottom to top to prevent the elastic arm from moving downwards. The upper frame of the fixing hole can prevent the elastic arm from being damaged due to the fact that external force is directly exerted on the elastic arm. The arrangement of the pre-fixing position ensures that the automatic production is more reliable, and the machine only needs to complete the action of pushing in the CPA structure.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural view of a connector with a CPA pre-fixing structure according to the present utility model.

Fig. 2 is a schematic structural view of a housing of a connector with a CPA pre-fixing structure according to the present utility model.

Fig. 3 is a schematic view of a connector body with a CPA pre-fixing structure according to the present utility model.

Fig. 4 is a schematic structural view of a CPA structure of a connector with a CPA pre-fixing structure according to the present utility model.

Fig. 5 is a schematic view of a chute of a connector with CPA pre-fixing structure according to the present utility model.

Fig. 6 is a schematic diagram of a first clamping portion and a second bayonet of a connector with a CPA pre-fixing structure according to the present utility model.

Fig. 7 is a schematic view of a first clamping portion of a connector with a CPA pre-fixing structure in a chute according to the present utility model.

Fig. 8 is a schematic diagram of a first clamping portion and a first bayonet of a connector with a CPA pre-fixing structure according to the present utility model.

The figures are marked as follows:

1-a connector body; 11-a chute; 12-a first bayonet, 13-a second bayonet, 14-a clamping groove and 141-a third bayonet;

2-a housing; 21-a bayonet;

3-an elastic arm; 31-free end; 32-clamping protrusions;

4-CPA structure; 41-basal body, 411-first clamping part, 42-connecting arm, 421-clamping hook, 43-convex rib and 431-second clamping part;

5-a fixing plate;

6-supporting plate.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

A connector with CPA pre-securing structure, as shown in fig. 1-8, comprising:

the connector comprises a connector body 1, a shell 2 and a CPA structure 4, wherein the connector body 1 is detachably spliced with the shell 2 through a locking device; the locking device comprises an elastic arm 3, the elastic arm 3 is pressed to enable the locking device to be separated from the clamping connection, and the connector body 1 and the shell 2 are in a separable state;

the CPA structure 4 comprises a base 41 and first clamping parts 411 arranged on two sides of the base 41, a fixing hole for accommodating at least part of the elastic arms 3 is formed in the base 41, the connector body 1 is provided with a sliding groove 11 for accommodating the sliding of the first clamping parts 411, and a first bayonet 12 and a second bayonet 13 arranged on two sides of the sliding groove 11 along the sliding direction of the first clamping parts 411, when the first clamping parts 411 are clamped with the first bayonet 12, at least part of the elastic arms 3 are inserted into the fixing hole and prevented from being pressed, and when the first clamping parts 411 are clamped with the second bayonet 13, at least part of the elastic arms 3 are separated from the fixing hole, and the elastic arms 3 are in a pressable state. In one embodiment, the locking device comprises a clamping bayonet 21 arranged on the shell 2 and a clamping protrusion 32 arranged on the free end 31 of the elastic arm 3, and the clamping bayonet and the clamping protrusion are matched and clamped. The housing 2 is used to cooperate with the connector body 1 to protect the electrical connection device in the connector body 1, and the latch device is used to prevent the housing 2 from being separated from the connector body 1 after the housing 2 is plugged into the connector body 1. If the housing 2 is to be removed from the connector body 1, the free ends 31 of the resilient arms 3 are simply pressed down, and the snap projections 32 follow the resilient arms 31 to move downward, disengaging the snap openings 21, thereby disengaging the housing 2 from the connector body 1. In another embodiment, the place where the housing 2 is engaged with the engaging protrusion 32 is not a bayonet but a recess capable of engaging. In practical use, the situation that the elastic arm 3 is touched by mistake to cause the clamping protrusion 32 to separate from the clamping bayonet 21 is very easy to occur, so that the CPA structure 4 is arranged on the connector body 1, and the CPA structure 4 is at least partially positioned below the free end 31 of the elastic arm 3, so that the free end 31 cannot be pressed downwards, and the free end 31 is ensured not to be driven to generate the phenomenon that the clamping protrusion 32 is driven by the downward movement of the misoperation. If the housing 2 needs to be disassembled, the CPA structure 4 needs to be disassembled first to press the free end 31 of the elastic arm 3 to drive the clamping protrusion 32 to separate from the clamping bayonet 21, so as to separate the housing 2 from the connector body 1. Before use, the first clamping portion 411 is clamped with the second bayonet 13, as shown in fig. 6, so that the CPA structure 4 and the connector body 1 are pre-fixed. After the housing 2 and the connector body 1 are mounted, the CPA structure 4 is pushed, the first clamping portion 411 passes through the chute 11, as shown in fig. 7, and then is clamped into the first bayonet 12, as shown in fig. 8, and the chute 11 provides a space for the first clamping portion 311 to advance. The arrangement of the pre-fixing position ensures that the automatic production is more reliable, and the machine only needs to complete the action of pushing in the CPA structure. At this time, the CPA structure enters the working position, and the elastic arm 3 can be prevented from being pressed down, so that the safety is ensured. The lower surface of the fixing hole on the base 41 abuts against the elastic arm 3 from below upward, preventing downward movement thereof. The upper frame of the fixing hole can prevent the elastic arm 3 from being damaged due to the fact that external force directly presses the elastic arm 3.

In some embodiments, the clamping protrusions 32 are provided in plurality and uniformly arranged on the free end 31. The plurality of clamping protrusions 32 are matched with the plurality of clamping bayonets 21 at the same time, so that the connector body 1 and the shell can be connected more firmly.

In some embodiments, the connection between the elastic arm 3 and the connector body 1 is a connection point, the elastic arm 3 is clamped with the housing 2 through a clamping protrusion 32, and a ratio of a distance from the connection point to the clamping protrusion 32 to a distance from the clamping protrusion 32 to an end of the free end 31 of the elastic arm 3 is not less than 1:8. if the snap-in projection 32 is too close to the connection point, the free end 31 is downward, and the snap-in projection 32 is then not sufficiently downward, so that the housing 2 cannot be separated from the connector body 1. In order to find the ratio of the distance from the proper connection point to the clamping protrusion 32 to the distance from the clamping protrusion 32 to the end of the free end 31, the inventor performs an experiment, and the experimental method is to select different elastic arms 3 to be arranged on the same connector body 1 and clamped with the same shell 2, the positions of the clamping protrusions 32 on the elastic arms 3 are different, and the free ends 31 of the elastic arms 3 are respectively pressed, so that the separation of the shell 2 and the connector body 1 can be achieved, otherwise, the separation is failed, and the structure is shown in table 1.

Table 1: the ratio of the distance from the connection point to the clamping protrusion to the distance from the clamping protrusion to the free end portion has an influence on whether the housing and the connector body can be separated.

As shown in table 1, when the ratio of the distance from the connection point to the locking protrusion 32 to the distance from the locking protrusion 32 to the end of the free end 31 is less than 1:8, pressing the free end 31 of the elastic arm 3 cannot drive the locking protrusion 32 to disengage from the locking bayonet 21 and cannot separate the housing 1 from the connector body 1, so the inventors preferably have that the ratio of the distance from the connection point to the locking protrusion 32 to the distance from the locking protrusion 32 to the end of the free end 31 is not less than 1:8.

in some embodiments, the connector 1 body has a clamping groove 14, a third bayonet 141 is disposed on a side wall of the clamping groove 14, the CPA structure 4 has a rib 43 adapted to be inserted into the clamping groove 14, and a second clamping portion 431 for clamping with the third bayonet 141 is disposed on the rib 43, and the second clamping portion is clamped with the third bayonet 141. The rib 43 is inserted along the clamping groove 14, and the second clamping portion 431 is clamped with the third bayonet 141, so that the CPA structure 4 is connected with the connector body 1.

Further, the ribs 43 are U-shaped shock absorbing structures. That is, the ribs 43 are hollow, and have better elasticity, so that impact of the CPA structure on the connector body 1 can be reduced at the moment when the CPA structure is clamped into the working position.

Further, the second engaging portion 431 is provided with a chamfer. The chamfer is arranged in the direction that the second clamping part 431 enters the clamping groove 14, and the arrangement of the chamfer can facilitate the clamping connection of the second clamping part 431 and the third bayonet 141.

In some embodiments, a connecting arm 42 is provided on the CPA structure 4, and a hook 421 is provided on the connecting arm 42, where the hook 421 is clamped on the connector body 1. As shown in fig. 4 and 5, the clamping part of the clamping hook 421 on the connecting arm 42 and the connector body 1 is far away from the free end 31, so that the CPA structure 4 can be more stably arranged on the connector body 1.

Further, the fixing plates 5 are disposed on both sides of the connecting arm 42, and the support plate 6 for supporting the fixing plates 5 is disposed on the connector body 1. The support plate 6 can support the fixing plate 5, making the setting of the connecting arm 42 more stable.

In some embodiments, the side surface of the connecting arm 42 is provided with a second clamping portion 423, and the connector body 1 is provided with a second bayonet 13 adapted to be clamped by the second clamping portion 423. The second bayonet 13 and the second clamping portion 423 cooperate to further prevent the CPA structure 4 from being separated from the connector body 1, and the second bayonet 13 and the hook 421 have a double-insurance effect to jointly ensure the stability of the CPA structure 4.

In some embodiments, the surface of the CPA structure 4 is provided with cleats. Because the CPA structure 4 is firmly connected to the connector body 1, it is difficult to disassemble the connector, and the provision of the anti-slip protrusions can increase friction force to facilitate the operator to detach the CPA structure 4 from the connector body 1.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A connector having a CPA pre-fixing structure, comprising:

2. A connector with CPA pre-fixing structure according to claim 1, wherein: the locking device comprises a clamping bayonet arranged on the shell and a clamping protrusion arranged on the free end of the elastic arm, and the clamping bayonet and the clamping protrusion are matched and clamped.

3. A connector with CPA pre-fixing structure according to claim 2, wherein: the clamping protrusions are arranged in a plurality and uniformly arranged on the free ends.

4. A connector with CPA pre-fixing structure according to claim 1, wherein: the junction of elastic arm with the connector body is the tie point, the elastic arm through the joint protruding with the casing joint, the tie point to the bellied distance of joint with the joint protruding reaches the ratio of the distance of free end tip of elastic arm is not less than 1:8.

5. a connector with CPA pre-fixing structure according to claim 1, wherein: the connector body is provided with a clamping groove, a third bayonet is arranged on the side wall of the clamping groove, the CPA structure is provided with a convex rib which is suitable for being inserted into the clamping groove, a second clamping part which is used for being clamped with the third bayonet is arranged on the convex rib, and the second clamping part is clamped with the third bayonet.

6. A connector with CPA pre-fixing structure according to claim 5, wherein: the convex ribs are U-shaped shock absorption structures.

7. A connector with CPA pre-fixing structure according to claim 5, wherein: and a chamfer is arranged on the second clamping part.

8. A connector with CPA pre-fixing structure according to claim 1, wherein: the CPA structure is provided with a connecting arm, the connecting arm is provided with a clamping hook, and the clamping hook is clamped on the connector body.

9. The connector with CPA pre-fixing structure according to claim 8, wherein: the connector comprises a connector body and is characterized in that fixing plates are arranged on two sides of the connecting arm, and supporting plates for supporting the fixing plates are arranged on the connector body.

10. A connector with CPA pre-fixing structure according to claim 1, wherein: the surface of the CPA structure is provided with a non-slip protrusion.