Connector with anti-back structure

Abstract

A mounting hole communicated with a mounting groove is formed in the upper end face of an insulating body, a first limiting piece and a second limiting piece which are arranged at intervals in the front-back direction integrally extend upwards from a main body part, and a limiting groove is formed between the first limiting piece and the second limiting piece in a clamping mode. The limiting groove corresponds to the mounting hole in position; the limiting block is arranged in the mounting hole in a matched mode and extends downwards into the mounting groove and the limiting groove, so that in the overall structure of the connector, the limiting block can extend downwards into the limiting groove, the front end face of the limiting block abuts against the first limiting piece, the front-back position of the terminal in the insulating body is limited, and even if the terminal is subjected to large plugging force, the terminal cannot be damaged. Therefore, the stability of the internal structure is ensured, and the connector is prevented from being damaged due to the fact that the plugging force is too large.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a connector with an anti-withdrawal structure. Background Art

[0002] A connector is also called a plug. In China, it is also called a connector and a socket, generally referring to an electrical connector. That is, a device connecting two active devices, transmitting current or signals. The male end and the female end can transmit information or current after contact, and it is also called a connector. The basic performance of the connector can be divided into three categories: mechanical performance, electrical performance, and environmental performance. Another important mechanical performance is the mechanical life of the connector. The mechanical life is actually a durability index, which is called mechanical operation in the national standard GB5095. It takes one insertion and one extraction as a cycle, and judges whether the connector can normally complete its connection function after the specified number of plugging and unplugging cycles.

[0003] In order to ensure the stability of the connection process between two connectors during the plugging and unplugging process, the clamping force between the connector terminals is generally increased. However, this structure will cause the terminals to receive a greater axial insertion force during the plugging process. In the existing connector, the terminals are directly fixedly installed with the insulating body, and only the position of the terminals is limited by the fixing structure. When the insertion force is large, the terminals will receive a large axial force during the plugging process. After long-term use, the terminals will slide backward relative to the insulating body, thus damaging the internal structure of the connector and affecting the service life of the connector. Therefore, it is necessary to further improve the existing connector structure. Summary of the Utility Model

[0004] In view of this, the main purpose of the present utility model is to provide a connector with an anti-withdrawal structure, which can effectively solve the problems of the simple limit structure of the existing connector structure, the inability to withstand large plugging and unplugging forces, and the short service life of the connector.

[0005] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0006] A connector with an anti-withdrawal structure includes an insulating body, terminals, and a limiting block; the insulating body has an installation groove penetrating through the front and rear end faces of the insulating body, and an installation hole communicating with the installation groove is opened on the upper end face of the insulating body; the terminals are arranged on the insulating body and are located in the installation groove. The terminal includes a main body portion and a connecting portion integrally extending forward from the main body portion. The main body portion integrally extends upward with a first limiting member and a second limiting member arranged at intervals before and after. A limiting groove is formed between the first limiting member and the second limiting member, and the limiting groove corresponds to the position of the installation hole; the limiting block is arranged in the installation hole and extends downward into the installation groove and the limiting groove, and the front end face of the limiting block abuts against the first limiting member.

[0007] As a preferred solution, a plurality of the mounting grooves are arranged at intervals transversely, and a terminal is correspondingly arranged in each mounting groove. Correspondingly, the mounting holes are arranged to extend transversely.

[0008] As a preferred solution, a plurality of mounting parts arranged at intervals transversely extend integrally upward from the bottom of the mounting hole. The limiting block is arranged to extend transversely, and a plurality of grooves cooperating with the mounting parts are formed in the limiting block. The lower end of the limiting block extends inward into the limiting groove of the corresponding terminal.

[0009] As a preferred solution, a limiting hole communicating with the mounting groove is formed in the bottom of the insulating body; a limiting part is integrally bent and formed downward from the main body part of the terminal, and the rear end face of the limiting part abuts against the rear side wall of the limiting hole.

[0010] As a preferred solution, the connecting part includes contact elastic pieces integrally bent and formed upward. The contact elastic pieces are two arranged symmetrically left and right, and an insertion groove is formed between the two contact elastic pieces.

[0011] As a preferred solution, the first limiting member includes a support part and a strengthening part integrally formed upward from the left and right sides of the main body part respectively. The support part extends vertically, and a mounting position is concavely provided on the upper end face of the support part. The strengthening part is integrally bent and formed upward from the main body part, and a mounting head cooperating with the mounting position is arranged at the outer end of the strengthening part. The strengthening part makes the mounting head cooperate with the mounting position through the bending and forming method.

[0012] As a preferred solution, convex parts cooperating with the side wall of the mounting hole extend integrally outward from the lower ends of the left and right end faces of the limiting block respectively.

[0013] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions:

[0014] An installation hole communicating with the installation groove is formed in the upper end face of the insulating body. The main body part integrally extends upward with a first limiting member and a second limiting member arranged at intervals front and back. A limiting groove is formed by clamping between the first limiting member and the second limiting member, and the limiting groove corresponds to the position of the installation hole; and in cooperation with the limiting block arranged in the installation hole and extending downward into the installation groove and the limiting groove, the limiting block can extend downward into the limiting groove in the overall structure of the connector, and the front end face of the limiting block abuts against the first limiting member, so as to limit the front and back positions of the terminal in the insulating body. Even when receiving a large insertion force, the terminal will not slide backward, ensuring the stability of the internal structure and avoiding damage to the connector due to excessive insertion force.

[0015] To more clearly illustrate the structural features and functions of the utility model, the following combines the drawings and specific embodiments to elaborate on the utility model in detail. Brief Description of the Drawings

[0016] Figure 1 Fig. is a schematic view of the usage state of the preferred embodiment of the present utility model;

[0017] Figure 2 Fig. is a schematic exploded view of the preferred embodiment of the present utility model;

[0018] Figure 3 Fig. is a schematic perspective view of the terminal in the preferred embodiment of the present utility model;

[0019] Figure 4 Fig. is a schematic cross-sectional view of the preferred embodiment of the present utility model.

[0020] Description of the Reference Numerals in the Drawings:

[0021] 10. Insulating body 101. Mounting groove

[0022] 102. Mounting hole 103. Limiting hole

[0023] 11. Mounting portion 20. Terminal

[0024] 201. Limiting groove 202. Insertion groove

[0025] 203. Mounting position 21. Main body portion

[0026] 22. Connecting portion 221. Contact elastic piece

[0027] 23. First limiting member 24. Second limiting member

[0028] 25. Limiting portion 26. Supporting portion

[0029] 27. Reinforcing portion 271. Mounting head

[0030] 30. Limiting block 301. Groove

[0031] 31. Convex portion. Detailed Description of the Preferred Embodiment

[0032] Please refer to Figures 1 to 4 shown, which shows the specific structure of the preferred embodiment of the present utility model, including an insulating body 10, a terminal 20 and a limiting block 30.

[0033] The insulating body 10 has a mounting groove 101 penetrating through the front and rear end faces of the insulating body 10, and a mounting hole 102 communicating with the mounting groove 101 is formed in the upper end face of the insulating body 10; in this embodiment, a plurality of the mounting grooves 101 are arranged at intervals transversely, and a terminal 20 is correspondingly arranged in each mounting groove 101. Correspondingly, the mounting holes 102 are arranged to extend transversely. A plurality of mounting portions 11 arranged at intervals transversely extend integrally upward from the bottom of the mounting hole 102. A limiting hole 103 communicating with the mounting groove 101 is formed in the bottom of the insulating body 10.

[0034] The terminal 20 is arranged on the insulating body 10 and is located in the mounting groove 101. The terminal 20 includes a main body portion 21 and a connecting portion 22 integrally formed by extending forward from the main body portion 21. A first limiting member 23 and a second limiting member 24 arranged at intervals before and after extend integrally upward from the main body portion 21. A limiting groove 201 is formed by clamping between the first limiting member 23 and the second limiting member 24, and the limiting groove 201 corresponds to the position of the mounting hole 102. In this embodiment, a limiting portion 25 is integrally formed by bending the main body portion 21 of the terminal 20 downward, and the rear end face of the limiting portion 25 abuts against the rear side wall of the limiting hole 103. Through the cooperation of the limiting portion 25 and the limiting hole 103, a further anti-withdrawal effect is achieved. The connecting portion 22 includes contact elastic pieces 221 integrally formed by bending upward. The contact elastic pieces 221 are two arranged symmetrically left and right. A plugging groove 202 is formed by enclosing between the two contact elastic pieces 221. The terminal 20 is connected and conducted with an external connector by inserting the terminal of the external connector into the plugging groove 202. The first limiting member 23 includes a supporting portion 26 and a reinforcing portion 27 integrally formed by extending upward from the left and right sides of the main body portion 21 respectively. The supporting portion 26 extends vertically, and a mounting position 203 is recessed in the upper end face of the supporting portion 26. The reinforcing portion 27 is integrally formed by bending the main body portion 21 upward, and a mounting head 271 matched with the mounting position 203 is arranged at the outer end of the reinforcing portion 27. The reinforcing portion 27 makes the mounting head 271 cooperate with the mounting position 203 by means of bending, thereby increasing the overall structural strength of the first limiting member 23 and the terminal 20 and further improving its anti-withdrawal performance.

[0035] The limit block 30 is arranged in the mounting hole 102 and extends downward into the mounting groove 101 and the limit groove 201. The front end face of the limit block 30 abuts against the first limiting member 23. Through the cooperation of the limit block 30 with the first limiting member 23 and the second limiting member 24, the function of limiting the front and rear positions of the terminal 20 is realized, so that the terminal 20 will not move backward even when bearing a large insertion force. In this embodiment, the limit block 30 is arranged to extend horizontally. A plurality of grooves 301 cooperating with the mounting portion 11 are formed in the limit block 30. The lower end of the limit block 30 extends inward into the limit groove 201 of the corresponding terminal 20, so as to realize the limiting process of each terminal 20. In this embodiment, convex portions 31 cooperating with the side wall of the mounting hole 102 are integrally extended outward from the lower ends of the left and right end faces of the limit block 30 respectively. Through the cooperation of the convex portions with the side wall of the mounting hole 102, the limit block 30 is prevented from falling off from the mounting hole 102, and the overall structural strength of the connector is further enhanced.

[0036] The design focus of the present utility model lies in: an installation hole communicating with the installation groove is formed in the upper end face of the insulating body, a first limiting member and a second limiting member arranged at intervals before and after are integrally extended upward from the main body portion, a limiting groove is formed by sandwiching between the first limiting member and the second limiting member, and the limiting groove corresponds to the position of the installation hole; and in cooperation with the limit block arranged in the installation hole and extending downward into the installation groove and the limiting groove, the limit block can extend downward into the limiting groove in the overall structure of the connector, and the front end face of the limit block abuts against the first limiting member, so as to limit the front and rear positions of the terminal in the insulating body. Even when receiving a large insertion force, the terminal will not slide backward, ensuring the stability of the internal structure and avoiding damage to the connector due to excessive insertion force.

[0037] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A connector with an anti-retraction structure, characterized in that: It includes an insulating body, a terminal and a limit block; the insulating body has a mounting groove that passes through the front and rear end surfaces of the insulating body, and the upper end surface of the insulating body is provided with a mounting hole connected to the mounting groove; the terminal is arranged on the insulating body and located in the mounting groove, the terminal includes a main body and a connecting part that extends forward from the main body as a whole, the main body extends upward as a whole to have a first limit piece and a second limit piece arranged in a front and rear interval, a limit groove is sandwiched between the first limit piece and the second limit piece, and the limit groove corresponds to the position of the mounting hole; the limit block is arranged in the mounting hole and extends downward into the mounting groove and the limit groove, and the front end surface of the limit block abuts against the first limit piece.

2. The connector with an anti-retraction structure according to claim 1, characterized in that: The installation grooves are arranged in a plurality at intervals in a transverse direction, each installation groove is provided with a terminal, and correspondingly, the installation holes are provided in a transversely extending manner.

3. The connector with an anti-retraction structure according to claim 2, characterized in that: The bottom of the mounting hole integrally extends upward to form a plurality of mounting portions arranged at intervals in a transverse direction. The limit block is arranged to extend in a transverse direction. The limit block is provided with a plurality of grooves cooperating with the mounting portions. The lower end of the limit block extends inwardly into the limit groove of the corresponding terminal.

4. The connector with an anti-retraction structure according to claim 1, characterized in that: A limiting hole connected to the mounting groove is formed at the bottom of the insulating body; the main body of the terminal is integrally bent downward to form a limiting portion, and the rear end surface of the limiting portion abuts against the rear side wall of the limiting hole.

5. The connector with an anti-retraction structure according to claim 1, characterized in that: The connecting portion includes a contact spring sheet that is integrally bent upward, and there are two contact spring sheets that are symmetrically arranged on the left and right, with a plug-in slot formed between the two contact spring sheets.

6. The connector with an anti-retraction structure according to claim 1, characterized in that: The first limiting member includes a supporting portion and a reinforcing portion which are integrally formed upward from the left and right sides of the main body respectively. The supporting portion extends up and down, and an installation position is concavely provided on the upper end surface of the supporting portion. The reinforcing portion is integrally bent upward from the main body, and an installation head which cooperates with the installation position is provided at the outer end of the reinforcing portion. The reinforcing portion is formed by bending to make the installation head cooperate with the installation position.

7. The connector with an anti-retraction structure according to claim 1, characterized in that: The lower ends of the left and right end surfaces of the limit block respectively extend outward to form convex parts that match the side walls of the mounting hole.

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