Secondary lock and connector

Abstract

The utility model discloses a secondary lock and a connector. The secondary lock comprises a lock cylinder, wherein the two ends of the lock cylinder are each of an opening structure. One end of the lock cylinder is provided with at least one groove structure; the diameter of the end, provided with the groove structure, of the lock cylinder is larger than that of the other end. By means of the structure of the scheme, the secondary lock is not provided with an avoiding groove structure, the secondary lock can be directly pushed in the installation process, and assembling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a secondary lock and a connector. Background Art

[0002] The contact assembly, namely the terminal assembly, is an important component of the connector. In order to improve the reliability of the connection of the connector contact assembly, a secondary locking structure is generally used to achieve the locking of the contact assembly.

[0003] The utility model patent with application number 202321305164.6 discloses "a connector assembly", which has a snap-in groove circumferentially provided on the terminal assembly, and the elastic cantilever structure forms a bent portion by bending the free end toward the direction of the terminal assembly, and the bent portion abuts against the snap-in groove to achieve a primary locking of the terminal assembly. An avoidance groove matching the bent portion is provided on the terminal position assurance device, and a crimping slope for pressing the bent portion on its inner side is provided at the end of the avoidance groove, and the bent portion is pressed by the crimping slope to achieve a secondary locking of the terminal assembly.

[0004] However, the existing locking structure has the following problems: during installation, the avoidance groove and the bent portion need to be aligned first, and the avoidance groove is in the inner hole of the terminal position ensuring device, which is very inconvenient during assembly. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a secondary lock and a connector.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] The utility model provides a secondary lock in a first aspect, comprising a lock cylinder with openings at both ends;

[0008] One end of the lock cylinder is provided with at least one groove structure;

[0009] The diameter of one end of the lock cylinder provided with the groove structure is larger than the diameter of the other end.

[0010] A second aspect of the utility model provides a connector, comprising:

[0011] A contact assembly, wherein the contact assembly is provided with a locking groove along the circumferential direction;

[0012] A housing, wherein a contact assembly mounting hole is provided on the housing, and a locking piece having one end that can be clamped in the locking groove is provided in the contact assembly mounting hole along its axial direction;

[0013] A secondary lock as described in the first aspect, wherein one end of the secondary lock provided with a groove structure is placed in the gap between the locking piece and the housing;

[0014] A secondary lock and locking assembly is used to fix the secondary lock limit platform in the shell.

[0015] The utility model has the following advantages:

[0016] With the structure of this solution, there is no need to set an avoidance groove structure on the secondary lock. When installing, it can be directly pushed in, which is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the secondary lock of the utility model;

[0019] Figure 2 It is a side view of the secondary lock of the utility model;

[0020] Figure 3 It is a cross-sectional view of the connector of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the shell of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model provides a secondary lock and a connector, such as Figure 3 As shown, the connector includes the secondary lock, a contact assembly 2, a housing 3 and a secondary lock locking assembly.

[0029] The contact assembly 2 is provided with a locking groove 21 along the circumferential direction, correspondingly, as shown in FIG. Figure 4 As shown, a contact assembly mounting hole is provided on the housing 3 , and a locking piece 31 having one end that can be clamped in the locking groove 21 is provided in the contact assembly mounting hole along its axial direction.

[0030] like Figure 1 , 2 As shown, the secondary lock includes a lock cylinder 11 with opening structures at both ends; at least one groove structure 13 is provided at one end of the lock cylinder 11; the diameter of the end of the lock cylinder 11 provided with the groove structure 13 is larger than the diameter of the other end.

[0031] The secondary lock locking assembly is used to fix the secondary lock limiting platform 12 in the housing 3.

[0032] During installation, one end of the secondary lock provided with the groove structure 13 is placed in the gap between the locking piece 31 and the housing 3 .

[0033] With the above structure, one end of the locking piece 31 is stuck in the locking groove 21 to achieve primary locking of the contact assembly 2, and the secondary lock is stuck in the gap between the locking piece 31 and the housing 3 to achieve secondary locking, thereby preventing the locking piece 31 from deforming under the action of tension and falling out of the locking groove 21.

[0034] With the above structure, there is no need to set an avoidance groove structure on the secondary lock. When installing, it can be directly pushed in, which is convenient to install.

[0035] With the above structure, a groove structure 13 is provided at one end of the secondary lock. During the assembly process, it is deformed by force. After being assembled in place, under the action of the deformation elastic force, it can be tightly attached to the inner wall of the shell and maintain the position unchanged while the locking piece 31 is locked; and it is easy to disassemble during the disassembly process.

[0036] In order to facilitate the processing of the lock cylinder 11, as Figure 2 As shown, the diameter of the lock cylinder 11 gradually increases from one end with the groove structure 13 to the other end. The diameter of the smaller end of the lock cylinder 11 is less than or equal to the diameter of the contact assembly installation hole, and the diameter of the larger end is slightly larger than the diameter of the contact assembly installation hole.

[0037] In order to make the lock cylinder 11 deform better during the plugging process, the groove structure 13 is provided with at least two grooves. Figure 1 As shown, it is an example of setting 6 groove structures 13, and the groove structure 13 is parallel to the axis of the lock cylinder 11.

[0038] The locking piece 31 can adopt the solution in the prior art, that is, a bent portion structure, or can be Figure 3 , 4 As described above, a clamping protrusion is arranged on the spring piece to form a locking piece.

[0039] To facilitate installation, the width of the groove structure 13 in the circumferential direction of the contact assembly 2 is smaller than the width of the locking piece 31 .

[0040] During assembly, in order to facilitate the perception of the secondary lock being assembled in place, a limiting platform 12 is provided on the outer wall of the other end of the lock cylinder 11, that is, the groove structure 13 and the limiting platform 12 are respectively provided at both ends of the lock cylinder 11; a first step structure 14 is provided on the inner wall of one end of the groove structure 13 of the lock cylinder 11. A second step structure 34 for matching with the limiting platform 12 is provided in the housing 3. The first step structure 14 and the second step structure 34 are provided at positions such that when the limiting platform 12 abuts against the second step structure 34, the first step structure 14 abuts against the end of the locking piece 31.

[0041] The limiting platform 12 may be a convex structure or a ring structure.

[0042] By adopting the above structure, by adding a limit platform and a step structure, the assembly feature is made obvious.

[0043] In order to enhance the waterproof effect of the connector, the secondary locking assembly includes a waterproof sleeve 41 abutting against the end of the limit platform 12 and an end cap 42 detachably connected to one end of the housing 3. The connection between the end cap 42 and the housing 3 can be threaded.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A secondary lock, characterized in that: It comprises a lock cylinder (11) with openings at both ends; One end of the lock cylinder (11) is provided with at least one groove structure (13); The lock cylinder (11) is provided with a groove structure (13) and the diameter of one end thereof is larger than the diameter of the other end thereof.

2. A secondary lock according to claim 1, characterized in that: A limiting platform (12) is provided on the outer wall of the other end of the lock cylinder (11).

3. A secondary lock according to claim 2, characterized in that: The limiting platform (12) is ring-shaped.

4. A secondary lock according to claim 1, characterized in that: The diameter of the lock cylinder (11) gradually increases from one end where the groove structure (13) is provided to the other end.

5. A secondary lock according to claim 1, characterized in that: The groove structures (13) are provided with at least two grooves.

6. A secondary lock according to claim 1, characterized in that: The groove structure (13) is parallel to the axis of the lock cylinder (11).

7. A secondary lock according to claim 1, characterized in that: A first step structure (14) is provided on the inner wall of one end of the groove structure (13) of the lock cylinder (11).

8. A connector, characterized in that: include: A contact assembly (2), wherein the contact assembly (2) is provided with a locking groove (21) along the circumferential direction; A housing (3), wherein a contact assembly mounting hole is provided on the housing (3), and a locking piece (31) having one end that can be clamped in the locking groove (21) is provided in the contact assembly mounting hole along its axial direction; A secondary lock according to any one of claims 1 to 7, wherein one end of the secondary lock provided with a groove structure (13) is placed in the gap between the locking plate (31) and the housing (3); A secondary lock locking assembly, the secondary lock locking assembly is used to fix the secondary lock limit platform (12) in the housing (3).

9. A connector according to claim 8, characterized in that: A second step structure (34) is provided in the housing (3) and is used to match the limiting platform (12).

10. A connector according to claim 8, characterized in that: The secondary locking assembly comprises a waterproof sleeve (41) abutting against the end of the limiting platform (12) and an end cover (42) detachably connected to one end of the housing (3).

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