CN219304006U

CN219304006U - Connector locking structure

Info

Publication number: CN219304006U
Application number: CN202320641949.4U
Authority: CN
Inventors: 蒋川新; 张洺诚; 王孟; 周洁; 卢志琴
Original assignee: Sichuan Interconnect Innovation Technology Co ltd
Current assignee: Sichuan Interconnect Innovation Technology Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-07-04
Anticipated expiration: 2033-03-28

Abstract

The utility model discloses a connector locking structure which comprises a shell, a lock catch and a wire harness terminal, wherein the shell is provided with an accommodating groove, the rear side wall of the accommodating groove is an elastic buckle provided with an axial bulge, the lower surface of the elastic buckle is provided with a limit lug, the rear side wall of the limit lug is provided with a wedge-shaped surface, the wire harness terminal is provided with an annular groove, the front end surface of the annular groove is a terminal retaining surface, the wire harness terminal is arranged in the shell, the limit lug is positioned in the annular groove, the lock catch is arranged in the accommodating groove, the lock catch is provided with a lock tongue, and the lower end part of the lock tongue is positioned in the annular groove. The beneficial effects of the utility model are as follows: the elastic buckle is provided with a limit bump which is designed in a sufficient space, is not easy to break and damage in the use process, and the lock catch is fixed in the connector shell and can cover the elastic buckle to protect the elastic buckle.

Description

Connector locking structure

Technical Field

The utility model relates to a locking structure of a wire harness terminal, in particular to a connector locking structure.

Background

With the rapid development of the automobile industry, various in-car wire harness connectors are widely applied to automobiles, particularly to new energy automobiles. The type of connector such as the conventional fka-MINI FKARA-HSD-H-MTD has in common that the connectors used to secure the harness terminals are designed with primary and secondary locking arrangements to provide for a sufficiently effective securement of the harness terminals.

The primary lock and the secondary lock in the prior art are mostly arranged on different sides of the connector respectively. Often because the space is limited, the cantilever of the elastic wall of the primary lock structure is very short, the elasticity is not good enough, and the cantilever is easy to break in the actual use process, especially the cantilever can be broken in the disassembly process. Meanwhile, the unreasonable space arrangement also increases the difficulty of disassembly, and is particularly characterized in that insufficient space accommodating tools apply force to the elastic wall so as to perform disassembly work. Once the elastic wall breaks, the whole connector shell cannot be reused and can only be scrapped, so that the cost loss of manpower and material resources brings about no negative effect on the increase of enterprise profits. On the other hand, the primary lock in the prior art is often directly exposed to the connector shell, and can be subjected to advanced aging due to the change of external environment for a long time, so that the functionality is poor.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a connector locking structure.

The aim of the utility model is achieved by the following technical scheme: the utility model provides a connector locking structure, which comprises an outer shell, hasp and pencil terminal, the storage tank has been seted up on the shell, the back lateral wall in storage tank is that be provided with the bellied elasticity knot of axial, be provided with spacing lug on the lower surface of elasticity knot, be provided with the wedge face on the back lateral wall of spacing lug, have annular groove on the pencil terminal, annular groove's preceding terminal surface is the terminal stopping face, pencil terminal installs in the shell, and spacing lug is located annular groove, the hasp is installed in the storage tank, and be provided with the spring bolt on the hasp, the lower tip of spring bolt is located annular groove.

Optionally, the lock tongue has an arc surface matched with the arc of the annular groove, and a groove body for accommodating the limit bump is further formed on the lock tongue.

Optionally, the guide way has been seted up on the left and right sides wall of holding groove, has seted up the locking hole on the guide way, and the left and right sides of hasp still is provided with the elastic arm, and the elastic arm is located the front end of spring bolt, and the outside of elastic arm is provided with the buckle, and the elastic arm inserts the guide way, and the buckle card goes into in the locking hole.

Optionally, the guide grooves have two locking holes and are distributed up and down, wherein the upper part is provided with a first locking hole, and the lower part is provided with a second locking hole.

Optionally, an outward inclined guide slope is arranged at the inlet of the guide groove.

Optionally, a prying hole is formed in the front end face of the lock catch, and the prying hole is exposed outside after the lock catch is mounted in the accommodating groove.

The utility model has the following advantages: the locking structure of the wire harness terminal is characterized in that the elastic buckle is provided with the limit lug which is designed in a sufficient space, so that the limit lug is not easy to break and damage in the use process, and the lock catch is fixed in the connector shell and can cover the elastic buckle to protect the elastic buckle.

Drawings

FIG. 1 is a schematic illustration of the components of the present utility model prior to assembly;

FIG. 2 is an assembled cross-sectional view of the present utility model;

FIG. 3 is another directional cross-sectional view of the assembled utility model;

FIG. 4 is an isometric view of the present utility model after assembly;

in the figure, 1-a housing; 2-locking; 3-wire harness terminals; 11-elastic buckle; 111-limit bumps; 12-a first locking hole; 13-a second locking hole; 14-accommodating grooves and 15-guiding grooves; 21-a buckle; 22-a lock tongue; 23-picking the hole; 24-elastic arms, 31-terminal stopping surfaces; 32-an annular groove.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and fig. 4, a connector locking structure includes a housing 1, a lock catch 2 and a wire harness terminal 3, wherein the wire harness terminal 3 is installed in the housing 1, a containing groove 14 is formed in the housing 1, the rear side wall of the containing groove 14 is an elastic buckle 11 provided with an axial protrusion, as shown in fig. 2 and fig. 3, a limit bump 111 is provided on the lower surface of the elastic buckle 11, a wedge-shaped surface is provided on the rear side wall of the limit bump 111, an annular groove 32 is formed in the wire harness terminal 3, the front end surface of the annular groove 32 is a terminal retaining surface 31, the limit bump 111 is located in the annular groove 32, when the wire harness terminal 3 is installed, the front end of the wire harness terminal 3 interferes with the limit bump 111 when the wire harness terminal 3 is just started to be inserted, that is to enable the elastic buckle 11 to deform, and then facilitate the insertion of the wire harness terminal 3, when the terminal retaining surface 31 passes over the limit bump 111, the limit bump 111 resets under the action of elastic restoring force, and then enables the limit bump 111 to be located in the annular groove 32, and the wire harness terminal 3 interferes with the limit bump 111 once, thereby realizing that the wire harness terminal 3 is retained by the primary interference of the wire harness terminal 3.

In this embodiment, as shown in fig. 1 and 4, the lock catch 2 is installed in the accommodating groove 14, the lock catch 2 is provided with the lock catch 22, the lower end portion of the lock catch 22 is located in the annular groove 32, and the end surface of the lock catch 22 also interferes with the terminal retaining surface 31, so that the wire harness terminal 3 is retained, and further secondary locking of the wire harness terminal 3 is achieved, further, the lock catch 22 has an arc surface matched with the arc of the annular groove 32, and the lock catch 22 is further provided with a groove body for accommodating the limiting bump 111, that is, when the lock catch 2 is installed, the limiting bump 111 is located in the groove body, so that the lock catch 2 does not interfere with the elastic buckle 11 in the installation process.

In this embodiment, as shown in fig. 1, the left and right side walls of the accommodating groove 14 are provided with guide grooves 15, the guide grooves 15 are provided with locking holes, the left and right sides of the lock catch 2 are further provided with elastic arms 24, the elastic arms 24 are located at the front ends of the lock bolts 22, the outer sides of the elastic arms 24 are provided with buckles 21, the elastic arms 24 are inserted into the guide grooves 15, and the buckles 21 are clamped into the locking holes, preferably, the number of the locking holes on the guide grooves 15 is two, and the locking holes are distributed up and down, wherein the upper first locking hole 12 and the lower second locking hole 13 are arranged, when the lock catch 21 is clamped in the second locking hole 13, the buckles 21 of the lock catch 2 are sequentially clamped into the first locking hole 12 and the second locking hole 13, after the buckles 21 are clamped in the second locking holes 13, the lock bolts 22 are clamped into the annular grooves 32, the end faces of the lock bolts 22 abut against terminal retaining faces 31 on the wire harness terminals 3, and accurate retaining and limiting of the wire harness terminals 3 are completed.

In this embodiment, as shown in fig. 1, an outwardly inclined guide slope is provided at the entrance of the guide groove 15, thereby facilitating insertion of the elastic arm 24 into the guide groove 15.

In this embodiment, as shown in fig. 4, a prying hole is formed in the front end surface of the lock catch 2, when the lock catch 2 is installed in the accommodating groove 14, the prying hole is exposed, and when the lock catch 2 needs to be detached, prying is performed in the prying hole 23 inserted into the lock catch 2, so that the lock catch 21 is sequentially separated from the second locking hole 13 and the first locking hole 12 upwards, and detachment of the lock catch 2 is completed. Then, a tool is inserted into the annular groove 32 and is pried slightly upward with force, so that the elastic buckle 11 is separated from the terminal retaining surface 31, and then the wire harness terminal 3 is pulled out in the axial direction.

The working process of the utility model is as follows: after the harness terminal 3 is inserted into the housing 1 in the axial direction and slid forward, the elastic buckle 11 on the housing 1 is elastically deformed upward by the pushing force of the outer surface of the harness terminal 3. When the wire harness terminal 3 is inserted into the predetermined position and stopped, the limit bump 111 on the elastic buckle 11 can rebound and fall into the annular groove 32 on the wire harness terminal 3, and the rear end face of the limit bump 111 abuts against the terminal stopping face 31 on the wire harness terminal 3. Thus, the preliminary limit assembly of the housing 1 and the wire harness terminal 3 is completed, and then the buckle 21 on the lock catch 2 is downwards and sequentially clamped into the first locking hole 12 and the second locking hole 13, so that the assembly of the lock catch 2 is completed. At this time, the lock tongue 22 of the lock catch 2 is clamped into the limit groove of the housing 1, the rear end face of the lock tongue 22 abuts against the terminal retaining face 31 on the wire harness terminal 3, accurate retaining and limiting of the wire harness terminal 3 are completed, the inner wall face of the lock catch 2 covers the upper surface of the elastic buckle 11, the elastic buckle 11 is not affected by vibration and the like and elastically deforms outwards, the functional stability of the elastic buckle 11 can be improved, when the lock catch is disassembled, as shown in fig. 2 and 4, the lock catch is inserted into the prying hole 23 on the lock catch 2 by a tool to pry, the lock catch 21 is sequentially separated from the second locking hole 13 and the first locking hole 12 upwards, and the disassembly of the lock catch 2 is completed. Then, a tool is inserted into the annular groove 32 and is pried slightly upward with force, so that the limit bump 111 is separated from the terminal retaining surface 31, and then the wire harness terminal 3 is pulled out along the axial direction.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A connector locking structure, characterized in that: including shell, hasp and pencil terminal, the storage tank has been seted up on the shell, the back lateral wall in storage tank is that is provided with the bellied elasticity knot of axial, be provided with spacing lug on the lower surface of elasticity knot, be provided with the wedge face on the back lateral wall of spacing lug, have annular groove on the pencil terminal, the preceding terminal surface of annular groove is the terminal stopping face, the pencil terminal is installed in the shell, just spacing lug is located in the annular groove, the hasp is installed in the storage tank, just be provided with the spring bolt on the hasp, the lower tip of spring bolt is located in the annular groove.

2. A connector locking structure according to claim 1, wherein: the lock tongue is provided with an arc-shaped surface matched with the arc of the annular groove, and a groove body for accommodating the limit lug is further formed in the lock tongue.

3. A connector locking structure according to claim 2, wherein: the left side wall and the right side wall of the accommodating groove are provided with guide grooves, the guide grooves are provided with locking holes, the left side and the right side of the lock catch are also provided with elastic arms, the elastic arms are positioned at the front ends of the lock tongues, the outer sides of the elastic arms are provided with buckles, the elastic arms are inserted into the guide grooves, and the buckles are clamped into the locking holes.

4. A connector locking structure according to claim 3, wherein: the number of the locking holes on the guide groove is two, and the locking holes are distributed up and down, wherein the first locking holes are arranged on the upper surface, and the second locking holes are arranged on the lower surface.

5. The connector locking structure of claim 4, wherein: an outward inclined guide inclined plane is arranged at the inlet of the guide groove.

6. The connector locking structure of claim 5, wherein: and a prying hole is formed in the front end face of the lock catch, and is exposed after the lock catch is mounted in the accommodating groove.