Socket connector with secondary locking structure

Abstract

The utility model discloses a socket connector with a secondary locking structure, which is characterized in that a rear cover is detachably arranged on a terminal mounting part of the socket connector, and at least two locking arms are arranged on the end face of one side, directly facing the terminal mounting part, of the rear cover in an extending manner along the direction in which a power terminal and a signal terminal are mounted into a sheath; and at least two locking arms are respectively inserted in the first terminal cavity and the second terminal cavity and are respectively abutted against the power terminal and the signal terminal so as to prevent the power terminal and the signal terminal from withdrawing from the sheath, and the secondary locking structure is integrated on the high-voltage connector body so as to further lock and limit the terminals, so that the high-voltage connector is convenient to use. Compared with the prior art, the socket connector has the advantages of simple assembly, low product cost and the like, the secondary locking structure is directly integrated on the rear cover of the high-voltage connector, and the assembling direction of the rear cover and the secondary locking structure is consistent with the assembling direction of the terminal, so that the assembly of the socket connector is not limited by the assembling space, and the practicability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a socket connector with a secondary locking structure. Background Art

[0002] With the development of the new energy electric vehicle industry, the use of high-voltage connectors in the whole vehicle is also increasing. Various complex wiring environments have also caused higher and higher requirements for the performance indicators of high-voltage connectors by wire harness factories. Among them, the fixing reliability of terminals is one of the more prominent ones. For the standard terminals of small-current high-voltage connectors, simply relying on the elastic pieces on the terminals to fix can no longer meet the use requirements. At present, the method of adding a secondary locking structure (TPA) is mostly used to further lock and limit the terminals. However, the existing secondary locking structure (TPA) is generally independently arranged with the high-voltage connector body, which has the problems of complex assembly and high product cost. Moreover, the independently arranged method makes the high-voltage connector more sensitive to the assembly space requirements. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a socket connector with a secondary locking structure to solve the technical problems mentioned in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a socket connector with a secondary locking structure, which is paired and connected with a plug connector, includes a sheath and a terminal installation part partially arranged in the sheath. A first terminal cavity and a second terminal cavity are axially and parallelly arranged inside the terminal installation part. A power terminal and a signal terminal are respectively installed in the first terminal cavity and the second terminal cavity. A rear cover is detachably arranged at one end of the terminal installation part away from the plug connector. At least two locking arms are arranged on the side end face of the rear cover facing the terminal installation part and extend along the direction in which the power terminal and the signal terminal are inserted into the sheath. At least two locking arms are respectively inserted into the first terminal cavity and the second terminal cavity and respectively abut against the power terminal and the signal terminal to prevent the power terminal and the signal terminal from withdrawing from the sheath.

[0005] In some embodiments, there are two first terminal cavities, and the two first terminal cavities are arranged in parallel. The second terminal cavity is located between the two first terminal cavities. At least one locking arm is inserted into each of the first terminal cavity and the second terminal cavity.

[0006] In some embodiments, a power terminal is clamped in each of the first terminal cavities. The power terminal includes a conductive part, a square clamping part, and a first connecting part for connecting a first cable. A first avoiding groove for avoiding the first connecting part and the first cable is arranged on the locking arm inserted into the first terminal cavity along the extending direction of the locking arm.

[0007] In some embodiments, two locking arms are inserted into the first terminal cavity, and the two locking arms inserted into the first terminal cavity are arranged on opposite sides of the first connecting portion and the first cable.

[0008] In some embodiments, two locking arms inserted into the first terminal cavity have arc-shaped surfaces on two opposite end surfaces that match the shape of the first terminal cavity.

[0009] In some embodiments, two signal terminals are clamped inside the second terminal cavity, and the two signal terminals are arranged opposite to each other. The signal terminal includes a square main body and a second connecting portion for connecting a second cable. A locking arm inserted into the second terminal cavity is provided with a second avoidance groove for avoiding the second connecting portion of the two signal terminals and the second cable along the extension direction of the locking arm.

[0010] In some embodiments, the back cover is provided with a cable hole for the first cable and the second cable to pass through.

[0011] In some embodiments, the clamping portion and the main body are respectively provided with a first clamping arm and a second clamping arm, and the inner walls of the first terminal cavity and the second terminal cavity are respectively provided with a first clamping groove and a second clamping groove that are clamped with the first clamping arm and the second clamping arm.

[0012] In some embodiments, at least two lugs are provided on the outer edge of the back cover extending along the direction in which the power terminals and the signal terminals are installed into the sheath, and a snap-in hole is penetrated through the lug, and a snap block that snaps into engagement with the snap-in hole is protruding from the outer side wall of the terminal mounting portion.

[0013] In some embodiments, two lugs are provided, and the two lugs are arranged opposite to each other on the back cover.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the socket connector of the utility model integrates the secondary locking structure on the high-voltage connector body to achieve further locking and limiting of the terminal. Compared with the existing independent arrangement of the secondary locking structure (TPA) and the high-voltage connector body, it has the advantages of simple assembly and low product cost. Moreover, the secondary locking structure is directly integrated into the back cover of the high-voltage connector. Since the installation direction of the back cover and the secondary locking structure is consistent with the installation direction of the terminal, the assembly of the socket connector is not limited by the assembly space, and the practicality is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0016] Figure 1 Structural schematic diagram of the socket connector provided by the present utility model;

[0017] Figure 2 is Figure 1 Structural schematic diagram of the shown socket connector from another angle;

[0018] Figure 3 is Figure 1 Side view of the shown socket connector;

[0019] Figure 4 is Figure 3 Cross-sectional view along the C-C direction;

[0020] Figure 5 is Figure 3 Cross-sectional view along the D-D direction;

[0021] Figure 6 is Figure 3 Cross-sectional view along the E-E direction;

[0022] Figure 7 is Figure 1 Schematic diagram of the cooperation between the power terminal and the signal terminal and the rear cover in the shown socket connector;

[0023] Figure 8 is Figure 1 Structural schematic diagram of the rear cover in the shown socket connector.

[0024] The markings in the figure are as follows:

[0025] 10. Sheath;

[0026] 20. Terminal mounting part; 201. First terminal cavity; 202. Second terminal cavity; 203. First card slot; 204. Second card slot; 205. Card block;

[0027] 30. Power terminal; 301. Conductive part; 302. Clamping part; 303. First connecting part; 304. First cable; 305. First clamping arm;

[0028] 40. Signal terminal; 401. Main body part; 402. Second connecting part; 403. Second cable; 404. Second clamping arm;

[0029] 50. Rear cover; 501. Locking arm; 502. First relief groove; 503. Arc surface; 504. Second relief groove; 505. Cable hole; 506. Lobe; 507. Clamping hole;

[0030] 60. Direction for inserting the power terminal and the signal terminal into the sheath. Detailed implementation mode

[0031] Reference will now be made in detail to various exemplary embodiments of the present invention with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present invention or its application or use.

[0033] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0034] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of exemplary embodiments may have different values.

[0035] As Figures 1 - 8 shown, a socket connector having a secondary locking structure is matingly connected to a plug connector (not shown in the figures), and includes a sheath 10 and a terminal mounting portion 20 partially disposed within the sheath 10. A first terminal cavity 201 and a second terminal cavity 202 are axially and parallelly formed inside the terminal mounting portion 20. A power terminal 30 and a signal terminal 40 are respectively installed in the first terminal cavity 201 and the second terminal cavity 202. As Figure 7 shown, the power terminal 30 includes a conductive portion 301, a square-shaped clamping portion 302, and a first connecting portion 303 for connecting a first cable 304. The signal terminal 40 includes a square-shaped main body portion 401 and a second connecting portion 402 for connecting a second cable 403. A first clamping arm 305 and a second clamping arm 404 are respectively provided on the clamping portion 302 and the main body portion 401. First clamping grooves 203 and second clamping grooves 204 that are in clamping cooperation with the first clamping arm 305 and the second clamping arm 404 are respectively provided on the inner walls of the first terminal cavity 201 and the second terminal cavity 202. The power terminal 30 is clamped in the first terminal cavity 201 by the cooperation of the first clamping arm 305 and the first clamping groove 203, and the signal terminal 40 is clamped in the second terminal cavity 202 by the cooperation of the second clamping arm 404 and the second clamping groove 204, thereby achieving a primary locking of the power terminal 30 and the signal terminal 40. For details, please refer to Figure 5 and Figure 6 .

[0036] As Figure 1 , Figure 2 , Figures 4 - 8As shown, a rear cover 50 is detachably provided at one end of the terminal mounting portion 20 away from the plug connector. A cable hole 505 for the first cable 304 and the second cable 403 to pass through is formed in the rear cover 50. On one side end face of the rear cover 50 facing the terminal mounting portion 20, at least two locking arms 501 are arranged along the direction 60 in which the power terminal and the signal terminal are inserted into the sheath. The at least two locking arms 501 are respectively inserted into the inside of the first terminal cavity 201 and the second terminal cavity 202 and respectively abut against the power terminal 30 and the signal terminal 40 to prevent the power terminal 30 and the signal terminal 40 from withdrawing from the sheath. The socket connector of the present utility model integrates the secondary locking structure on the high-voltage connector body to further lock and limit the terminals. Compared with the existing setting method in which the secondary locking structure (TPA) is independent of the high-voltage connector body, it has the advantages of simple assembly and low product cost. Moreover, since the secondary locking structure is directly integrated on the rear cover 50 of the high-voltage connector, and the installation direction of the rear cover 50 and the secondary locking structure is the same as the installation direction of the power terminal 30 and the signal terminal 40, the assembly of the socket connector is not restricted by the assembly space, and the practicability is better.

[0037] In one embodiment, as Figure 1 and Figure 3 shown, there are two first terminal cavities 201, and the two first terminal cavities 201 are arranged in parallel. The second terminal cavity 202 is located between the two first terminal cavities 201. At least one locking arm 501 is inserted into the inside of each first terminal cavity 201 and the second terminal cavity 202. Specifically, one power terminal 30 is clamped in each first terminal cavity 201. A first avoidance groove 502 for avoiding the first connection portion 303 and the first cable 304 is formed on the locking arm 501 inserted into the first terminal cavity 201 along the extending direction of the locking arm 501. Two signal terminals 40 are clamped inside the second terminal cavity 202, and the two signal terminals 40 are arranged oppositely. A second avoidance groove 504 for avoiding the second connection portion 402 of the two signal terminals 40 and the second cable 403 is formed on the locking arm 501 inserted into the second terminal cavity 202 along the extending direction of the locking arm 501. For details, please refer to Figure 7 and Figure 8 . The settings of the first avoidance groove 502 and the second avoidance groove 504 can prevent the situation that the rear cover 50 cannot be smoothly installed when the rear cover 50 is installed on the terminal mounting portion 20 due to interference between the locking arm 501 and the power terminal 30 and the signal terminal 40.

[0038] Furthermore, as Figure 3 , Figure 7 and Figure 8As shown, two locking arms 501 are inserted into the first terminal cavity 201, and the two locking arms 501 inserted into the first terminal cavity 201 are arranged on opposite sides of the first connecting portion 303 and the first cable 304. After the rear cover 50 is installed to the terminal mounting portion 20, the two locking arms 501 inserted into the first terminal cavity 201 abut against the clamping portion 302 of the power terminal 30 together. Since the two are arranged relative to each other, the holding force provided to the clamping portion 302 of the power terminal 30 is relatively stable, preventing the power terminal 30 from shaking when subjected to external force. At the same time, Figure 8 As shown, the two locking arms 501 inserted into the first terminal cavity 201 have arcuate surfaces 503 on the two opposite end surfaces that match the shape of the first terminal cavity 201. The setting of the arcuate surface 503 can facilitate the locking arms 501 to be smoothly inserted into the first terminal cavity 201.

[0039] In one embodiment, if Figure 2 and Figure 8 As shown, at least two lugs 506 are provided on the outer edge of the back cover 50 extending along the direction 60 in which the power terminals and the signal terminals are installed into the sheath, and a snap-in hole 507 is provided through the lug 506. A clamping block 205 that snaps into the snap-in hole 507 is protrudingly provided on the outer side wall of the terminal mounting portion 20. The back cover 50 is matched with the lug 506 and the clamping block 205, thereby realizing a detachable connection of the back cover 50. In order to ensure the stability of the back cover 50 after installation, two lugs 506 are provided, and the two lugs 506 are arranged opposite to each other on the back cover 50.

[0040] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A socket connector with a secondary locking structure, which is mated with a plug connector, comprises a sheath and a terminal mounting portion partially disposed in the sheath, wherein a first terminal cavity and a second terminal cavity are provided in parallel along the axial direction inside the terminal mounting portion, a power terminal and a signal terminal are respectively installed in the first terminal cavity and the second terminal cavity, and a rear cover is detachably provided at one end of the terminal mounting portion away from the plug connector, characterized in that: At least two locking arms are provided on one side end surface of the rear cover facing the terminal mounting portion, extending in the direction in which the power terminal and the signal terminal are installed into the sleeve. The at least two locking arms are respectively inserted into the interior of the first terminal cavity and the second terminal cavity and respectively abut against the power terminal and the signal terminal to prevent the power terminal and the signal terminal from withdrawing from the sleeve.

2. The socket connector with a secondary locking structure according to claim 1, characterized in that: There are two first terminal cavities, which are arranged in parallel with each other. The second terminal cavity is located between the two first terminal cavities. At least one locking arm is inserted in each of the first terminal cavity and the second terminal cavity.

3. The socket connector with a secondary locking structure according to claim 2, characterized in that: A power terminal is clamped in each of the first terminal cavities, and the power terminal includes a conductive portion, a square clamping portion, and a first connecting portion for connecting a first cable. A first avoidance groove for avoiding the first connecting portion and the first cable is provided on a locking arm inserted in the first terminal cavity along the extension direction of the locking arm.

4. The socket connector with a secondary locking structure according to claim 3, characterized in that: Two locking arms are inserted in the first terminal cavity, and the two locking arms inserted in the first terminal cavity are arranged on opposite sides of the first connecting portion and the first cable.

5. The socket connector with a secondary locking structure according to claim 4, characterized in that: The two locking arms inserted in the first terminal cavity have arc-shaped surfaces matching the shape of the first terminal cavity on the two end surfaces facing away from each other.

6. The socket connector with a secondary locking structure according to claim 3, characterized in that: Two signal terminals are clamped inside the second terminal cavity, and the two signal terminals are arranged opposite to each other. The signal terminal includes a square main body and a second connecting portion for connecting a second cable. A second avoidance groove for avoiding the second connecting portion of the two signal terminals and the second cable is provided on a locking arm inserted into the second terminal cavity along the extension direction of the locking arm.

7. The socket connector with a secondary locking structure according to claim 6, characterized in that: The rear cover is provided with a cable hole for the first cable and the second cable to pass through.

8. The socket connector with a secondary locking structure according to claim 6, characterized in that: The clamping portion and the main body are respectively provided with a first clamping arm and a second clamping arm, and the inner walls of the first terminal cavity and the second terminal cavity are respectively provided with a first clamping groove and a second clamping groove that are clamped with the first clamping arm and the second clamping arm.

9. The socket connector with a secondary locking structure according to claim 1, characterized in that: The outer edge of the rear cover is provided with at least two lugs extending along the direction in which the power terminals and the signal terminals are installed into the sheath, and the lugs are penetrated by a snap-fitting hole. A snap-fitting block that snaps into the snap-fitting hole is protrudingly provided on the outer side wall of the terminal mounting portion.

10. The socket connector with a secondary locking structure according to claim 9, characterized in that: The lugs are provided with two, and the two lugs are arranged opposite to each other on the rear cover.

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