Connector with CPA structure and connector assembly

Abstract

The utility model discloses a connector with a CPA structure and a connector assembly, the connector comprises a connector body in plugging cooperation with a mating connector and a CPA structure slidably arranged on the connector body, one side wall of the connector body is provided with a clamping arm, and the CPA structure is provided with a clamping groove. The end, facing the matched connector, of the clamping arm is provided with the sliding groove arranged in the moving direction of the clamping arm, when the CPA structure is installed in the clamping arm of the connector body, the end, facing the matched connector, of the clamping arm is installed in the sliding groove, and compared with an existing CPA structure which is installed from the tail of the clamping arm, the scheme that the CPA structure is installed from the head of the clamping arm is provided. The CPA structure can be suitable for some limited connector scheme designs. Furthermore, the structure of the connector and the connector assembly adopting the CPA structure can be more flexible during design, and diversified design of the connector is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connector, especially to a connector with CPA structure and connector assembly. BACKGROUND

[0002] The connector can be applied to traffic, communication, household appliance and medical products, and under the condition of rapid development of product technology level and rapid growth of market in its matching field, strongly promotes the development of connector technology. So far, the connector has developed into a series of products with complete types, various specifications, diversified structures and standard system specification and specialization.

[0003] CPA (Connector Position Assurance) is a position keeping piece for ensuring that the male and female ends of the connector cannot be easily withdrawn after being locked by the one-time locking mechanism, and it has become an indispensable part of the safety assurance of the connector. With the diversified design of the connector, in order to meet the reliability of the mutual matching of the male and female connectors, the CPA design of some limited connectors is particularly important. SUMMARY

[0004] Therefore, the utility model aims at providing a connector with CPA structure to realize the CPA design of limited connector.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a connector with CPA structure, which comprises a connector body matched with a counter connector and a CPA structure slidingly arranged on the connector body. One side wall of the connector body is provided with a clamping arm, and one end of the clamping arm facing the counter connector is provided with a sliding groove arranged along the running direction of the clamping arm. The CPA structure is arranged in the sliding groove, and a limiting feature for limiting the CPA structure is protruded on the inner wall of the sliding groove. The CPA structure comprises a main body part slidingly arranged in the sliding groove and a limiting arm extended from the front end of the main body part. The limiting arm is provided with a locking clamping part and a preloading clamping part with a width greater than that of the limiting arm at intervals in the extension direction of the limiting arm. After the CPA structure is arranged in the sliding groove, the preloading clamping part is blocked with the limiting feature to limit the CPA structure at the preloading position. The limiting arm and the groove bottom of the sliding groove have an avoiding gap, and the top of the preloading clamping part is provided with a pressing block matched with the counter connector. When the connector body is matched with the counter connector, the counter connector extrudes the preloading clamping part through the pressing block, so that the free end of the limiting arm is offset to the direction of the groove bottom of the sliding groove, and the preloading clamping part is clamped between the limiting feature and the locking clamping part after passing the limiting feature, so as to limit the CPA structure at the locking position.

[0006] In some embodiments, the free end of the limiting arm has a guide head, which is a wedge-shaped surface away from the side end face of the connector body.

[0007] In some embodiments, the sliding groove includes a first sliding groove arranged inside the limiting arm, and a second sliding groove arranged through the upper end face of the limiting arm and in communication with the first sliding groove, the main body part is slidingly arranged in the first sliding groove, the limiting arm is suspended and slidingly arranged in the second sliding groove, and the limiting feature is arranged on the inner wall of the second sliding groove.

[0008] In some embodiments, the outer wall of the main body part is integrally formed with a sliding block matching the shape of the first sliding groove.

[0009] In some embodiments, the lower end face of the clamping arm is provided with a third sliding groove in communication with the first sliding groove, and the bottom of the main body part is suspended into the third sliding groove and can freely slide therein.

[0010] In some embodiments, the limiting feature is provided with two limiting features arranged opposite to each other, and the width of the locking clamping part and the pre-assembly clamping part is greater than the distance between the two limiting features.

[0011] In some embodiments, the top of the main body part is provided with a support, and when the CPA structure is switched from the pre-assembly position to the locking position, the support is moved from the outer side of the connector body to the outer side of the counter connector to clamp the counter connector between the connector body and the support.

[0012] In some embodiments, the side wall opposite to the locking clamping part and the pre-assembly clamping part is provided with a second inclined surface, and the limiting feature is provided with a first inclined surface at least on the side facing the counter connector.

[0013] A connector assembly includes the connector body, the counter connector in plug-in cooperation with the connector body, and the CPA structure slidingly arranged on the connector body; the connector body is partially inserted into the counter connector, the clamping arm of the connector body is symmetrically provided with a locking arm with a free end facing the counter connector on both sides, the inner wall of the counter connector is provided with a locking block in clamping cooperation with the locking arm, and the locking arm and the locking block are in clamping cooperation when the counter connector and the connector body are in plug-in cooperation; the top of the main body part is provided with a support, and when the CPA structure is switched from the pre-assembly position to the locking position, the support is moved from the outer side of the connector body to the outer side of the counter connector to clamp the counter connector between the connector body and the support, thereby achieving secondary locking between the connector body and the counter connector.

[0014] In some embodiments, the counter connector is provided with an accommodation slot for accommodating the support, and the support is embedded into the accommodation slot when the CPA structure is in the locking position.

[0015] In some embodiments, the counter connector is provided with a pressing block matched with the extruding block, and the pressing block abuts against the extruding block to offset the free end of the limiting arm towards the groove bottom of the sliding groove when the CPA structure is in the pre-assembly position.

[0016] Compared with the prior art, the CPA structure in the utility model is loaded into the sliding groove from the end of the clamping arm facing the counter connector, which provides a solution of loading from the head of the clamping arm, thus the CPA structure can be applied to some limited connector design, and the structure of the connector and the connector assembly adopting the CPA structure can be more flexible in design, which is beneficial to the diversified design of the connector. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0018] Figure 1 And Figure 2 are respectively the structure schematic view of the connector when the CPA structure is in the pre-assembly position and the locking position.

[0019] Figure 3 is the structure schematic view of the CPA structure in the connector provided by the utility model.

[0020] Figure 4 is the side view of the connector provided by the utility model.

[0021] Figure 5 is the structure schematic view of the connector assembly provided by the utility model.

[0022] Figure 6 And Figure 7 are respectively the sectional view of the connector assembly when the CPA structure is in the pre-assembly position and the locking position.

[0023] Figure 8 is the cooperation schematic view of the connector body and the counter connector in the connector assembly provided by the utility model.

[0024] The figures are indicated as follows:

[0025] 10, connector body; 101, clamping arm; 102, locking arm;

[0026] 20, CPA structure; 201, main body; 202, limiting arm; 203, locking clamping part; 204, preloading clamping part; 205, extrusion block; 206, guide head; 207, wedge surface; 208, sliding block; 2081, first part; 2082, second part; 209, support; 210, second inclined surface;

[0027] 30, counter connector; 301, locking block; 302, avoiding channel; 303, accommodating groove; 304, pressure block;

[0028] 40, sliding groove; 401, limiting feature; 402, first inclined surface; 403, avoiding gap; 404, first sliding groove; 405, second sliding groove; 406, third sliding groove. DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are illustrative only and do not limit the scope of the present application unless otherwise specifically stated.

[0030] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the scope of the present application and its applications or uses.

[0031] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus should be considered as part of the description of the present application.

[0032] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as a limitation. Thus, other examples of exemplary embodiments can have different values.

[0033] A connector assembly, such as Figures 1-8 As shown, it comprises a connector body 10, a counter connector 30 which is plugged with the connector body 10, and a CPA structure 20 which is slidably arranged on the connector body 10; the connector body 10 is partially inserted into the counter connector 30, and a clamping arm 101 is arranged on one side wall of the connector body 10, and two locking arms 102 which are symmetrical to each other and have free ends facing the counter connector are arranged on both sides of the clamping arm 101 of the connector body 10, and a locking block 301 which is clamped with the locking arm 102 is arranged on the inner wall of the counter connector 30, and when the counter connector 30 is plugged with the connector body 10, the locking arm 102 is clamped with the locking block 301, thereby realizing the first locking between the connector body 10 and the counter connector 30, and for details, please refer to Figure 8The above limited structure makes the existing CPA structure directly loaded from the tail of the clamping arm, and the technical scheme cannot be directly applied, therefore, it is urgent to design a scheme loaded from the head of the clamping arm, and the specific technical scheme is as follows:

[0034] As shown in Figures 1-4 , the utility model discloses the one end of facing the connector 30 of clamping arm 101 is set up along the trend of clamping arm 101 and is set up the slide groove 40, and the inner wall of slide groove 40 is protruded and is set up and is used for the limiting feature 401 of CPA structure 20 is limited, and CPA structure 20 includes the main part 201 of sliding setting in slide groove 40 and the limiting arm 202 formed by the front end of main part 201, and the extension direction of limiting arm 202 is set up and is spaced apart and is set up and is used for the locking clamping portion 203 and the preloading clamping portion 204 of limiting arm 202, and the limiting feature 401 is generally set up and is set up and is used for two and two limiting features 401 are relatively set up, and the width of locking clamping portion 203 and preloading clamping portion 204 is greater than the interval between two limiting features 401, and the interval between two limiting features 401 is basically same with the width of limiting arm 202.CPA structure 20 is loaded in slide groove 40, and preloading clamping portion 204 is blocked with limiting feature 401, to limit CPA structure 20 in preloading position;

[0035] As shown in Figures 1-4 , the limiting arm 202 and the groove bottom of slide groove 40 have an avoiding gap 403, and the top of preloading clamping portion 204 is provided with an extrusion block 205 matched with the counter connector 30, when the connector body 10 is inserted and matched with the counter connector 30, the counter connector 30 extrudes the preloading clamping portion 204 through the extrusion block 205, so that the free end of the limiting arm 202 is offset towards the direction of the groove bottom of the slide groove 40, and the preloading clamping portion 204 is pushed to clamp the limiting feature 401 between the locking clamping portion 203 and the preloading clamping portion 204 after passing the limiting feature 401, so as to limit the CPA structure 20 in the locking position, please refer to Figure 1 and Figure 2 . Specifically, the inner wall of the counter connector 30 is provided with a pressure block 304 matched with the extrusion block 205, when the CPA structure 20 is in the preloading position, the pressure block 304 abuts to the extrusion block 205, so that the free end of the limiting arm 202 is offset towards the direction of the groove bottom of the slide groove 40, please refer to Figure 6 .

[0036] As shown in Figures 1-3As shown, the top of the main body 201 is provided with a support 209, and when the CPA structure 20 is switched from the pre-assembly position to the locking position, the support 209 is moved from the outer side of the connector body 10 to the outer side of the counter connector 30 to clamp the counter connector 30 between the connector body 10 and the support 209, thereby achieving secondary locking between the connector body 10 and the counter connector 30. For details, please refer to Figures 5-7 .

[0037] The CPA structure 20 in the utility model is loaded into the clamping arm 101 of the connector body 10, and is loaded into the sliding groove 40 from the end of the clamping arm 101 facing the counter connector 30, which provides a scheme of loading from the head of the clamping arm 101 compared with the existing CPA structure 20 loaded from the tail of the clamping arm 101. Therefore, the CPA structure 20 can be applied to some limited connector design schemes. Further, the structure of the connector and the connector assembly using the CPA structure 20 can be more flexible in design, which is beneficial to the diversified design of the connector.

[0038] In an embodiment, as shown in Figure 5 The end of the counter connector 30 facing the connector body 10 is provided with an avoidance channel 302 for avoiding the main body 201, and the counter connector 30 is provided with a receiving groove 303 for receiving the support 209. When the CPA structure 20 is in the locking position, the support 209 is embedded into the receiving groove 303. The receiving groove 303 positions the loading of the CPA structure 20 in the locking position, and prevents the CPA structure 20 from shaking left and right after loading, which can improve the stability of the connector assembly.

[0039] In an embodiment, as shown in Figure 3 The free end of the limiting arm 202 has a guide head 206, and the side end face of the guide head 206 away from the connector body 10 is a wedge surface 207. The guide head 206 and the wedge surface 207 are provided to guide the limiting arm 202 of the CPA structure 20 to pass through the limiting feature 401 when the CPA structure 20 is switched from the pre-assembly position to the locking position, which has the effect of guiding positioning.

[0040] Further, as shown in Figures 1-3 In order to facilitate the switching of the CPA structure 20 between the pre-assembly position and the locking position, the side wall opposite to the locking clamping part 203 and the pre-assembly clamping part 204 is provided with a second inclined surface 210, and the limiting feature 401 is provided with a first inclined surface 402 on at least one side facing the counter connector 30.

[0041] In an embodiment, as shown in Figures 1-4As shown, the sliding groove 40 includes a first sliding groove 404 arranged inside the limiting arm 202, and a second sliding groove 405 arranged through the upper end surface of the limiting arm 202 and communicated with the first sliding groove 404, the main body part 201 is slidingly arranged in the first sliding groove 404, the limiting arm 202 is suspendedly and slidingly arranged in the second sliding groove 405, and the limiting feature 401 is arranged on the inner wall of the second sliding groove 405. In order to improve the stability of the CPA structure 20 during sliding, a sliding block 208 matching the shape of the first sliding groove 404 is integrally formed on the outer wall of the main body part 201, in the embodiment, the sliding block 208 includes a first part 2081 in a shape similar to a "playground shape", and a second part 2082 in a strip shape, the shape of the first part 2081 matches the shape of the groove bottom of the first sliding groove 404, so as to realize the sliding fit between the main body part 201 and the first sliding groove 404, and meanwhile, the sum of the heights of the first part 2081 and the second part 2082 is the same as the height of the first sliding groove 404, so as to improve the stability of the main body part 201 during sliding.

[0042] In order to further improve the stability of the CPA structure 20 during sliding, as shown in Figure 3 and Figure 4 As shown, the lower end surface of the clamping arm 101 is provided with a third sliding groove 406 communicated with the first sliding groove 404, and the bottom of the main body part 201 is suspended into the third sliding groove 406 and can freely slide in the third sliding groove 406.

[0043] It should be noted that when the CPA structure 20 is loaded into the sliding groove 40 by the head of the clamping arm 101, the main body part 201 of the CPA structure 20 needs to be preloaded into the first sliding groove 404, and the CPA structure 20 is slid, when the locking clamping part 203 of the CPA structure 20 contacts with the limiting feature 401, the operator manually presses the limiting arm 202, so that the free end of the limiting arm 202 is offset towards the direction of the groove bottom of the sliding groove 40, at this time, the interference between the locking clamping part 203 and the preloading clamping part 204 and the limiting feature 401 disappears, and then the CPA structure 20 is continuously slid, so that the locking clamping part 203 and the preloading clamping part 204 pass the limiting feature 401 in sequence, at this time, the preloading clamping part 204 is clamped and matched with the limiting feature 401, and the CPA structure 20 is in the preloading position.

[0044] Although some specific embodiments of the utility model have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the utility model. Those skilled in the art should understand that the above embodiments can be modified 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 with CPA structure, comprising a connector body to be mated with a counter connector and a CPA structure to be slidably arranged on the connector body, one side wall of the connector body is provided with a clamping arm, an opening is formed in one end of the clamping arm facing the counter connector, and a sliding groove is arranged along the clamping arm, characterized in that: the CPA structure is arranged in the sliding groove, and a limiting feature for limiting the CPA structure is protrudedly arranged on the inner wall of the sliding groove; the CPA structure comprises a main body portion to be slidably arranged in the sliding groove and a limiting arm formed by the front end of the main body portion, and a locking clamping portion and a preloading clamping portion with a width greater than that of the limiting arm are arranged at intervals in the extending direction of the limiting arm, the preloading clamping portion is blocked with the limiting feature after the CPA structure is arranged in the sliding groove, so as to limit the CPA structure in a preloading position; the limiting arm and the groove bottom of the sliding groove have a clearance, and the top of the preloading clamping portion is provided with a pressing block matched with the counter connector, when the connector body is mated with the counter connector, the counter connector presses the preloading clamping portion through the pressing block, so that the free end of the limiting arm is offset towards the direction of the groove bottom of the sliding groove, and the preloading clamping portion is arranged to clamp the limiting feature between the locking clamping portion and the preloading clamping portion after passing the limiting feature, so as to limit the CPA structure in a locking position. The free end of the limiting arm has a guide head, and the side end face of the guide head away from the connector body is a wedge-shaped surface. The sliding groove comprises a first sliding groove arranged inside the limiting arm and a second sliding groove arranged through the upper end face of the limiting arm and communicated with the first sliding groove, the main body portion is slidably arranged in the first sliding groove, the limiting arm is suspendedly and slidably arranged in the second sliding groove, and the limiting feature is arranged on the inner wall of the second sliding groove. The outer wall of the main body portion is integrally formed with a sliding block matched with the shape of the first sliding groove.

2. The connector with CPA structure according to claim 1, characterized in that: The lower end face of the clamping arm is provided with a third sliding groove communicated with the first sliding groove, and the bottom of the main body portion is suspended into the third sliding groove and can freely slide in the third sliding groove.

3. The connector with CPA structure according to claim 1, characterized in that: The limiting feature is arranged in two and oppositely arranged between the two limiting features, and the width of the locking clamping portion and the preloading clamping portion is greater than the distance between the two limiting features.

4. The connector with CPA structure according to claim 3, characterized in that: The top of the main body portion is provided with a support, and when the CPA structure is switched from the preloading position to the locking position, the support is moved from the outer side of the connector body to the outer side of the counter connector, so as to clamp the counter connector between the connector body and the support.

5. The connector with CPA structure according to claim 4, characterized in that: Second inclined surfaces are arranged on the side walls opposite to the locking clamping portion and the preloading clamping portion, and first inclined surfaces are arranged on at least one side of the limiting feature facing the counter connector.

6. The connector with CPA structure according to claim 1, characterized in that: The connector body, the counter connector to be mated with the connector body, and the CPA structure to be slidably arranged on the connector body are arranged.

7. The connector with CPA structure according to claim 1, characterized in that: ​ 8. The connector with CPA structure according to claim 1, characterized in that: ​ 9. A connector assembly characterized by: ​ The connector body part is inserted into the counter connector, and the locking arms of the connector body are symmetrically arranged on both sides of the connector body and have free ends facing the counter connector; the inner wall of the counter connector is provided with locking blocks matched with the locking arms; when the counter connector is matched with the connector body, the locking arms are matched with the locking blocks. The top of the main body part is provided with a support, and when the CPA structure is switched from the pre-assembly position to the locking position, the support is moved from the outside of the connector body to the outside of the counter connector to clamp the counter connector between the connector body and the support, thereby achieving secondary locking between the connector body and the counter connector.

10. A connector assembly according to claim 9, wherein: The end of the counter connector facing the connector body is provided with an avoiding channel for avoiding the main body part, and the counter connector is provided with a receiving groove for receiving the support; when the CPA structure is in the locking position, the support is embedded into the receiving groove.

11. A connector assembly according to claim 9, wherein: The inner wall of the counter connector is provided with a pressure block matched with the extrusion block; when the CPA structure is in the pre-assembly position, the pressure block abuts against the extrusion block, so that the free end of the limiting arm is offset towards the groove bottom of the sliding groove.

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