Wire end connector

Abstract

A wire end connector comprises an insulating shell, a crimping terminal and a limiting piece, a terminal hole and a limiting groove are formed in the insulating shell, the crimping terminal is installed in the terminal hole in the direction perpendicular to the length direction of the insulating shell, and the limiting piece is inserted into the limiting groove from the side face of the insulating shell to limit the crimping terminal; the limiting piece comprises a connecting part, a first cross arm, a second cross arm and an elastic arm, the first cross arm and the second cross arm extend from the two ends of the connecting part respectively, a protruding buckling part is arranged at one end of the elastic arm, and the buckling part is elastically buckled with the insulating shell. By changing the assembling mode of the terminal limiting structure, the insulating shell is connected with plastic in the upper direction, the middle direction and the lower direction, so that the structure of the wire end connector is kept stable; the elastic arm is arranged on the limiting piece, the elastic arm can be pulled and pressed to retreat from the limiting piece according to needs in the later period, the crimping terminal is unlocked for replacement, and the product maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically a wire-end connector. Background Technology

[0002] In wire-end connectors, the terminal limiting structure is typically inserted and assembled from top to bottom. The insulating shell needs to be designed with a hollow center to meet assembly requirements. This type of wire-end connector has a weak insulating shell structure that is prone to breakage, failing to meet the application requirements of end products in scenarios requiring high impact resistance and bending strength. Furthermore, the limiting structure of the wire-end connector cannot be removed after installation, failing to meet the replacement needs after terminal aging.

[0003] Based on the above shortcomings, it is necessary to design a wire connector that can improve structural strength and allow for quick terminal replacement, so as to provide stable signal transmission for terminal products in high-impact application environments and reduce the maintenance cost of terminal equipment. Utility Model Content

[0004] This utility model provides a wire-end connector. After improving the assembly method of the terminal limiting structure, the area inside the insulating housing where the terminal limiting structure is installed does not need to be hollowed out in the upper, middle, and lower directions, thus enhancing the strength of the insulating housing and adapting to the strength requirements of end products in various scenarios. An elastic arm is added to the terminal limiting structure to elastically engage with the insulating housing; pressing the elastic arm removes the terminal limiting structure, enabling quick terminal replacement. The purpose of this utility model is achieved through the following solutions:

[0005] A wire-end connector includes an insulating housing, crimp terminals, and a limiting member. The insulating housing has a terminal hole and a limiting groove. The crimp terminal is installed in the terminal hole along the length of the insulating housing. The limiting member is inserted into the limiting groove from the side of the insulating housing to limit the crimp terminal. The limiting member includes a connecting portion, a first horizontal arm and a second horizontal arm extending from both ends of the connecting portion, and an elastic arm. One end of the elastic arm has a protruding snap-fit ​​portion that elastically engages with the insulating housing. Pressing the elastic arm allows for quick replacement of the crimp terminal. In existing technology, terminal limiting structures are typically installed in the insulating housing using an upper and lower assembly method. Correspondingly, the area within the insulating housing where the terminal limiting structure is installed needs to be designed as a hollow space to allow for clearance. The wire-end connector relies solely on the plastic at both ends of the insulating housing for connection, making it prone to breakage under external force. A limiting groove is provided on the side of the insulating housing, and one end of the terminal limiting member is open. The limiting member is inserted into the limiting groove from the side of the insulating housing to fix the terminal. The side mounting method completely avoids the hollow structure of the insulating housing, greatly improving the impact resistance of the wire end connector. The top and bottom assembled terminal limiting structure has buckles on the left and right sides of its bottom to fix it to the insulating housing. Once installed, it cannot be easily pulled out, which cannot meet the needs of future terminal replacement of the wire end connector. The improved wire end connector has an elastic arm on the limiting member. After the limiting member is installed in the insulating housing, pressing the elastic arm can easily remove the limiting member, thereby quickly replacing the terminal.

[0006] Preferably, the crimp terminal has a plate end contact portion, a cable crimp portion, and a transition portion disposed between the two. A recess is formed on the transition portion, and the recess communicates with the limiting groove. The first and second horizontal arms of the limiting member pass through the recess during insertion into the limiting groove, preventing the crimp terminal from coming out of the insulating housing. The crimp terminal is installed in the terminal hole along the length direction perpendicular to the insulating housing. The limiting groove is disposed on the side of the insulating housing along the length direction. The transition portion of the crimp terminal intersects with the limiting groove, and the recess formed on the transition portion is located in and communicates with the limiting groove. The limiting member is inserted into the limiting groove from the side, and the first and second horizontal arms pass through the recess of the crimp terminal, respectively, and are engaged with the transition portion to fix the crimp terminal.

[0007] Preferably, the insulating housing further includes a snap-fit ​​groove. After the limiting member is inserted into the limiting groove, the snap-fit ​​portion of the elastic arm engages within the snap-fit ​​groove of the insulating housing. The snap-fit ​​groove is located on the outside of the insulating housing. After the limiting member is fully inserted, the snap-fit ​​portion engages within the snap-fit ​​groove, thus fixing the limiting member to the insulating housing. If the crimp terminal needs to be replaced later, the limiting member can be removed by pressing the end of the elastic arm on the outside of the insulating housing to disengage the snap-fit ​​portion from the snap-fit ​​groove.

[0008] Preferably, the limiting member includes a fixing rib located on the second cross arm and arranged along the length of the insulating shell; the insulating shell is correspondingly provided with a fixing groove to accommodate the fixing rib, thereby fixing the limiting member. After the limiting member is inserted into the insulating shell, the fixing rib is inserted into the fixing groove, which prevents the limiting member from swaying inside the insulating shell.

[0009] Preferably, the wire connector includes a cable, which is connected to the crimp terminal by riveting and then inserted into the terminal hole for installation; the limiting member is inserted into the limiting groove from the side of the insulating housing, the first cross arm and the second cross arm pass through the recess, the limiting member fixes the crimp terminal in the insulating housing, the snap-fit ​​part is fastened in the snap-fit ​​groove, and the limiting member is fixed to the insulating housing.

[0010] The beneficial effects of this utility model are as follows: the limiting member is inserted from the side of the insulating shell, and the area inside the insulating shell where the limiting member is installed does not need to be designed as a hollow, which can effectively enhance the structural strength of the wire end connector; the limiting member can be pulled out from the insulating shell by pressing the elastic arm set on the limiting member, unlocking the crimped terminal, which is convenient for replacing aging terminals and reducing product maintenance costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a wire-end connector in an embodiment of the present utility model;

[0012] Figure 2 This is a schematic diagram of the assembly structure of the limiting member and the insulating shell in an embodiment of this utility model;

[0013] Figure 3 This is a cross-sectional schematic diagram of the insulating shell in an embodiment of this utility model;

[0014] Figure 4 This is a schematic diagram of the assembly structure of the limiting member and the crimping terminal in an embodiment of this utility model;

[0015] Figure 5 This is a schematic diagram of the structure of the limiting member in an embodiment of this utility model;

[0016] Figure 6 This is a schematic diagram of the structure of the crimp terminal in an embodiment of this utility model;

[0017] The reference numerals in the accompanying drawings include:

[0018] Wire connector-1, insulating housing-20, terminal hole-201, limiting groove-202, snap-fit ​​groove-203, fixing groove-204, crimp terminal-30, board end contact part-301, cable crimp part-302, transition part-303, recess-3031, limiting member-40, connecting part-401, first cross arm-402, second cross arm-403, fixing rib-4031, elastic arm-404, snap-fit ​​part-4041, cable-50. Detailed Implementation

[0019] This application provides a wire-end connector that enhances the structural strength of the wire-end connector, enabling the terminal product to work stably in multiple scenarios. It also allows the limiting component to be pulled out without damaging the wire-end connector structure, thus reducing maintenance costs.

[0020] The technical solution in this application is to solve the above-mentioned technical problems, and the overall approach is as follows:

[0021] A wire-end connector modifies the assembly method between the limiting component and the insulating shell, resulting in less internal perforation and a more stable structure in the insulating shell. An elastic arm is added to the limiting component to elastically engage and fix it to the insulating shell, facilitating the replacement of improperly installed or aged and deformed crimp terminals.

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] like Figures 1 to 6 The following is an embodiment of this application:

[0024] A wire connector 1 includes an insulating housing 20, a crimp terminal 30, and a limiting member 40, wherein:

[0025] refer to Figures 1-3 The insulating housing 20 is provided with terminal holes 201 and limiting grooves 202. The terminal holes 201 are located on the front of the insulating housing 20 and are arranged along the length direction perpendicular to the insulating housing 20. The limiting grooves 202 are located on the side of the insulating housing 20 and are arranged along the length direction of the insulating housing 20. The limiting grooves 202 are perpendicular to the terminal holes 201 and pass through each terminal hole 201.

[0026] refer to Figure 1 , Figure 2 The terminal hole 201 and the limiting groove 202 respectively accommodate the crimp terminal 30 and the limiting member 40. (Reference) Figure 4 , Figure 6 The crimp terminal 30 includes a plate end contact portion 301, a cable crimp portion 302, and a transition portion 303 disposed between the two, wherein a recess 3031 is formed on the transition portion 303; Reference Figure 5 The limiting member 40 includes a connecting part 401, a first horizontal arm 402 and a second horizontal arm 403 extending from both ends of the connecting part 401 respectively, and an elastic arm 404. One end of the elastic arm 404 is connected to the second horizontal arm 403, and the other end is provided with a protruding buckle part 4041.

[0027] After the crimp terminal 30 is fully inserted into the terminal hole 201, the transition portion 303 intersects with the limiting groove 202, and the recess 3031 is located within the limiting groove 202 and communicates with the limiting groove 202; Reference Figure 4 The limiting member 40 is inserted into the limiting groove 202 from the side of the insulating housing 20. The first horizontal arm 402 and the second horizontal arm 403 pass through the recess 3031 of the crimp terminal 30 and are engaged with the transition portion 303 to fix the crimp terminal 30 and prevent it from coming out of the insulating housing 20. The limiting member 40 is inserted into the insulating housing 20 from the side, which reduces the area that needs to be hollowed out inside the insulating housing 20, resulting in a stable overall structure that is not easily broken. The horizontal arm structure of the limiting member 40 is engaged with the recess 3031 of the crimp terminal 30, effectively preventing the crimp terminal 30 from moving forward or backward in the insertion direction.

[0028] refer to Figure 1 The insulating housing 20 has a snap-fit ​​groove 203 at the end where the limiting member 40 is inserted. When the limiting member 40 is fully inserted into the insulating housing 20, the snap-fit ​​part 4041 on the elastic arm 404 elastically engages with the snap-fit ​​groove 203 of the insulating housing 20, preventing the limiting member 40 from falling out of the insulating housing 20. In the existing structure, the limiting member is assembled vertically within the insulating housing. After the crimp terminal is installed, pressing the limiting member causes it to snap into the insulating housing. Unlocking the crimp terminal subsequently will cause some damage to the snap-fit ​​structure of the limiting member. In the improved solution, while the limiting member 40 fixes the crimp terminal 30 to the insulating housing 20, the snap-fit ​​part 4041 elastically engages with the snap-fit ​​groove 203. The limiting member 40 is elastically fixed by the insulating housing 20. By pressing the elastic arm 404, the limiting member 40 can be easily removed, and the crimp terminal 30 can be unlocked for replacement.

[0029] refer to Figure 2 , Figure 3 , Figure 5The limiting member 40 also includes a fixing rib 4031, which is located on the second cross arm 403 and is arranged along the length of the insulating housing 20. A fixing groove 204 is provided in the insulating housing 20 to accommodate the fixing rib 4031. The fixing groove 204 is connected to the limiting groove 202. As the limiting member 40 is inserted into the insulating housing 20, the fixing rib 4031 is placed in the fixing groove 204, which effectively prevents the limiting member 40 from swaying inside the insulating housing 20 and improves the stability of the electrical connection.

[0030] The wire connector 1 also includes a cable 50, which is connected to the crimp terminal 30 by riveting and then inserted into the terminal hole 201 of the insulating housing 20 together with the crimp terminal 30. After the crimp terminal 30 is installed, the limiting member 40 is inserted into the limiting groove 202 from the side of the insulating housing 20. During the installation of the limiting member 40, the first cross arm 402 and the second cross arm 403 pass through the recess 3031 of the crimp terminal 30 to fix the crimp terminal 30 in the insulating housing 20. After the limiting member 40 is fully inserted, the snap-fit ​​part 4041 is elastically engaged in the snap-fit ​​groove 203 to complete the fixation of the limiting member 40 and the insulating housing 20.

[0031] In summary, this utility model designs a wire-end connector that changes the assembly method of the terminal limiting structure, so that the insulating shell has plastic connections in the upper, middle and lower directions, avoiding excessive hollowing inside the insulating shell and ensuring the stability of the wire-end connector structure. The limiting component is provided with an elastic arm, which can be pressed to remove the limiting component and unlock the crimped terminal for replacement as needed, reducing product maintenance costs.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A wire-end connector, characterized in that, Includes an insulating housing, crimp terminals, and limiting components, wherein: The insulating housing is provided with a terminal hole and a limiting groove. The crimp terminal is installed in the terminal hole along the length direction perpendicular to the insulating housing. The limiting member is inserted into the limiting groove from the side of the insulating housing to limit the crimp terminal. The limiting member includes a connecting part, a first horizontal arm and a second horizontal arm extending from both ends of the connecting part, and an elastic arm. One end of the elastic arm is provided with a protruding buckle part, which is elastically engaged with the insulating shell. Pressing the elastic arm can quickly replace the crimp terminal.

2. A wire-end connector according to claim 1, characterized in that, The crimp terminal has a plate end contact portion, a cable crimp portion, and a transition portion disposed between the two. A recess is formed on the transition portion, and the recess communicates with the limiting groove. The first and second horizontal arms of the limiting member pass through the recess during the insertion of the limiting groove to prevent the crimp terminal from coming out of the insulating housing.

3. A wire-end connector according to claim 2, characterized in that, The insulating housing also includes a snap-fit ​​groove. After the limiting member is inserted into the limiting groove, the snap-fit ​​portion of the elastic arm is engaged in the snap-fit ​​groove of the insulating housing.

4. A wire connector according to any one of claims 1 to 2, characterized in that, The limiting member includes a fixing rib, which is located on the second cross arm and is arranged along the length direction of the insulating shell; the insulating shell is correspondingly provided with a fixing groove to accommodate the fixing rib, so as to fix the limiting member.

5. A wire-end connector according to claim 3, characterized in that, The wire connector includes a cable, which is connected to the crimp terminal by riveting and then inserted into the terminal hole for installation; the limiting member is inserted into the limiting groove from the side of the insulating housing, the first horizontal arm and the second horizontal arm pass through the recess, the limiting member fixes the crimp terminal in the insulating housing, the snap-fit ​​part is fastened in the snap-fit ​​groove, and the limiting member is fixed to the insulating housing.

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