Wire harness connector with anti-falling structure
By using a limit stud and spring reset design, the problem of easy detachment of the wire harness connector is solved, achieving stable locking and easy unlocking, thus improving the safety and reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU DONGWEI TECH
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-19
AI Technical Summary
Existing wire harness connectors lack an effective locking structure, making them prone to detachment under equipment vibration or external force pulling, and non-staff members can easily unlock them, failing to meet high safety requirements.
An anti-dislodgement structure with a limiting stud and a spring reset component was designed. The limiting stud and the threaded through hole work together to achieve stable locking of the socket and plug. The special structural design prevents unauthorized personnel from unlocking the lock, and the spring reset component enables convenient unlocking.
It achieves stable anti-dislodgement of sockets and plugs, prevents unauthorized unlocking by non-staff members, improves the safety and reliability of the equipment, and simplifies the unlocking operation.
Smart Images

Figure CN224264398U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire harness connector technology, and in particular to a wire harness connector with an anti-detachment structure. Background Technology
[0002] In modern electronic devices, automobiles, communications, and industrial control systems, wire harness connectors are key components for achieving circuit connections, and their reliability directly affects the normal operation of the system.
[0003] Currently, traditional wire harness connectors mainly achieve electrical connection through mechanical snap-fit or flexible plug-in structure. Although they can achieve a certain anti-dislodgement function, they lack an effective locking structure. The simple snap-fit design and plug-in form make it easy for the plug and socket to shift or even separate under equipment vibration, external force pulling, etc. Moreover, their safety is insufficient. Because their structure is relatively common, non-staff members can easily unlock them with common external tools, leading to misoperation or malicious damage, which cannot meet the needs of high-safety scenarios. Utility Model Content
[0004] This utility model relates to a wire harness connector with an anti-detachment structure, which solves the problem that existing wire harness connectors lack an effective locking structure, and that their anti-detachment structures are relatively common, making it easy for non-staff members to unlock them with common external tools.
[0005] This utility model provides a wire harness connector with an anti-detachment structure, specifically including: a socket and a plug. The top and bottom surfaces of the socket each have a square-shaped limiting protrusion. The center of each limiting protrusion has a circular groove for receiving the protrusion. A threaded through hole communicating with the socket's insertion port is formed at the axial center of each of the two receiving grooves. The top and bottom surfaces of the plug each have a circular-shaped limiting slot. When the socket and plug are inserted, the limiting slot and the threaded through hole are coaxial. A limiting stud is installed in the threaded through hole.
[0006] Furthermore, a circular locking block is fixedly installed on the top surface of the locking stud. The diameter of the locking block is the same as the diameter of the receiving groove, and the thickness of the locking block is less than the depth of the receiving groove.
[0007] Furthermore, when the bottom surface of the limiting mating block contacts the bottom surface of the inner end of the receiving groove, the bottom end of the limiting stud is inserted into the limiting slot; when the top surface of the limiting mating block and the top surface of the limiting mating protrusion are at the same horizontal plane, the bottom end of the limiting stud is completely received inside the threaded through hole.
[0008] Furthermore, the limiting and fitting block has an elliptical groove at its axial center on the top surface; it also includes a plug block whose structural dimensions match the plug groove's structural dimensions; and the plug block has a hexagonal torsion groove at its axial center on the top surface.
[0009] Furthermore, a circular groove structure is provided at the axial center of the bottom surface of the inner end of the insertion slot for resetting and storing; a rotating block is rotatably mounted on the bottom of the inner end of the resetting and storing slot via a bearing, and a spring resetting component is fixedly mounted on the top surface of the rotating block; in its natural state, the top of the spring resetting component is higher than the bottom surface of the inner end of the insertion slot.
[0010] This utility model provides a wire harness connector with an anti-detachment structure, which has the following advantages:
[0011] When the socket and plug are connected, the present invention ensures that the limiting slot and the threaded through hole are automatically aligned, so that the limiting stud can be screwed vertically into the limiting slot along the axis, forming a stable plug-in locking structure. This forcibly restricts the relative displacement of the socket and plug, ensuring that they cannot be separated before the lock is released, thus preventing them from falling off.
[0012] This invention, through the setting of a spring reset component, ensures that after the anti-drop locking is achieved, the spring reset component, which is in a compressed state, will quickly return to its original position after no pressure is applied. This will automatically push the top of the plug block away from the plug slot, so that the operator can directly grasp the exposed top of the plug block to separate the plug block from the plug slot without the need for additional tools or complicated operations, making it more convenient.
[0013] This utility model features a specially designed plug slot that does not match the geometry of commonly used tools such as screwdrivers and Allen wrenches. This prevents external tools from driving the limiting engagement block to rotate through the plug slot. Furthermore, when locking to prevent detachment, the limiting engagement block is completely housed within the plug slot, with no exposed parts on its outer circumference. This avoids forced rotation by clamping with tools or turning with fingers. In addition, the spring reset component of this utility model is rotatably connected to the reset storage slot via a bearing, further preventing the limiting engagement block from being rotated by gripping the spring. Based on the above structure, it is ensured that when the plug block is not in use, non-operators cannot release the limiting stud from the limiting slot, maximizing the protection against detachment of the socket and plug. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.
[0016] In the attached diagram:
[0017] Figure 1 A schematic diagram of the top isometric structure of this utility model is shown;
[0018] Figure 2 A schematic diagram of the bottom isometric structure of this utility model is shown;
[0019] Figure 3 This diagram shows a top isometric view of the structure of the present invention in its disassembled state.
[0020] Figure 4 This diagram shows the structure of the limiting and cooperating block, bearing, rotating block and spring reset component of this utility model in a disassembled state;
[0021] Figure 5 This diagram shows a partial enlarged cross-sectional view of the storage slot portion of the present invention;
[0022] List of reference numerals
[0023] 1. Socket; 101. Limiting protrusion; 102. Storage slot; 103. Threaded through hole; 2. Plug; 201. Limiting slot; 3. Limiting block; 301. Plug groove; 302. Limiting stud; 303. Reset storage slot; 304. Bearing; 305. Rotating block; 306. Spring reset component; 4. Plug block; 401. Torsion groove. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0025] Example: Please refer to Figures 1 to 5 :
[0026] This utility model proposes a wire harness connector with an anti-detachment structure, including: a socket 1 and a plug 2. The top and bottom surfaces of the socket 1 are each provided with a square-shaped limiting and mating protrusion 101. The center of each limiting and mating protrusion 101 has a circular groove 102. The axial center of each of the two grooves 102 has a threaded through hole 103 communicating with the socket 1's insertion port. The top and bottom surfaces of the plug 2 each have a circular groove. The limiting slot 201; when the socket 1 and plug 2 are plugged in, the limiting slot 201 and the threaded through hole 103 are coaxial; a limiting stud 302 is installed in the threaded through hole 103; a limiting mating block 3 with a circular block structure is fixedly installed on the top surface of the limiting stud 302, the diameter of the limiting mating block 3 is the same as the diameter of the receiving groove 102, and the thickness of the limiting mating block 3 is less than the depth of the receiving groove 102; when the bottom surface of the limiting mating block 3 is in contact with the inner surface of the receiving groove 102, the limiting slot 201 and the threaded through hole 103 are coaxial; a limiting stud 302 is installed in the threaded through hole 103; a limiting mating block 3 with a circular block structure is fixed on the top surface of the limiting stud 302, the diameter of the limiting mating block 3 is the same as the diameter of the receiving groove 102, and the thickness of the limiting mating block 3 is less than the depth of the receiving groove 102; when the bottom surface of the limiting mating block 3 is in contact with the inner surface of the receiving groove 102, the limiting slot 201 and the threaded through hole 103 are coaxial; a limiting stud 302 is installed in the threaded through hole 103; a limiting mating block 3 with a circular block structure is installed in the threaded through hole 102 ... When the bottom surfaces of the two ends are in contact, the bottom end of the limiting stud 302 is inserted into the limiting slot 201; when the top surface of the limiting mating block 3 and the top surface of the limiting mating protrusion 101 are on the same horizontal plane, the bottom end of the limiting stud 302 is completely housed inside the threaded through hole 103; an elliptical groove 301 is provided at the axial part of the top surface of the limiting mating block 3; it also includes a plug block 4, the structural dimensions of which match the structural dimensions of the plug groove 301; plug-in A hexagonal groove 401 is provided at the axial center of the top surface of block 4; a circular groove 303 is provided at the axial center of the bottom surface of the inner end of the insertion groove 301; a rotating block 305 is rotatably mounted on the bottom of the inner end of the reset storage groove 303 via a bearing 304; a spring reset component 306 is fixedly mounted on the top surface of the rotating block 305; in its natural state, the top of the spring reset component 306 is higher than the bottom surface of the inner end of the insertion groove 301.
[0027] The working principle of this embodiment:
[0028] When the socket 1 and plug 2 are connected, the limiting slot 201 and the threaded through hole 103 are in a coaxial state. Therefore, the staff can insert the plug block 4 they carry into the plug slot 301 that matches its structural size. Then, insert one end of the Allen wrench into the twisting slot 401 with a hexagonal slot structure. When the plug block 4 is rotated by the Allen wrench, downward pressure will be applied. At this time, the plug block 4 will move down along the plug slot 301 until it contacts the bottom surface of the inner end of the plug slot 301. At this time, the spring reset member 306 is compressed into the reset storage slot 303.
[0029] By engaging the plug 4 with the plug slot 301, the limiting engagement block 3 rotates synchronously along the receiving groove 102 when the plug 4 is rotated. At this time, the limiting stud 302 rotates downwards along the threaded through hole 103. When the limiting engagement block 3 rotates until its bottom surface contacts the bottom surface of the inner end of the receiving groove 102, the bottom end of the limiting stud 302 is engaged in the limiting slot 201, thus limiting and fixing the engagement state of the socket 1 and the plug 2. Before the limiting engagement between the limiting stud 302 and the limiting slot 201 is released, the engagement between the socket 1 and the plug 2 cannot be released, thus preventing them from falling off. Furthermore, after the Allen wrench is removed, without external pressure, the spring reset member 306, which is in a compressed state, quickly returns to its original position, thereby pushing the top of the plug block 4 to automatically disengage from the plug slot 301. This makes it easier for the operator to grasp the top of the plug block 4 that has disengaged from the plug slot 301 and remove the plug block 4 from the plug slot 301.
[0030] The elliptical groove design of the insertion slot 301 prevents commonly used tools such as screwdrivers and Allen wrenches from being inserted into the slot 301 to rotate the limiting block 3 without the insertion of the insertion block 4. Because the thickness of the limiting block 3 is less than the depth of the receiving groove 102, when the bottom surface of the limiting block 3 contacts the bottom surface of the inner end of the receiving groove 102, the entire structure of the limiting block 3 is contained within the receiving groove 102, thus preventing the rotation of tools. The outer circumferential surface of the clamping and limiting engagement block 3 is used to achieve rotation; the rotating block 305, which is fixedly connected to the spring reset member 306, is rotatably connected to the reset storage groove 303 through the bearing 304, so it is also impossible to achieve rotation of the limiting engagement block 3 by gripping the spring reset member 306; based on the above structure, it is ensured that when there is no plug block 4, non-operators cannot release the limiting stud 302 from the limiting slot 201, thus maximizing the protection against the socket 1 and plug 2 from falling off.
Claims
1. A wire harness connector with an anti-detachment structure, comprising a socket (1) and a plug (2), characterized in that, The socket (1) has a square block structure limiting protrusion (101) on its top and bottom surfaces. The center of each limiting protrusion (101) has a circular groove structure storage groove (102). The axial center of each storage groove (102) has a threaded through hole (103) that communicates with the socket (1) socket. The plug (2) has a circular groove structure limiting slot (201) on its top and bottom surfaces. When the socket (1) and plug (2) are plugged in, the limiting slot (201) and the threaded through hole (103) are coaxial. The threaded through hole (103) is threaded with a limiting stud (302).
2. The wire harness connector with an anti-detachment structure according to claim 1, characterized in that, The top surface of the limiting stud (302) is fixedly installed with a limiting mating block (3) in the shape of a circular block. The diameter of the limiting mating block (3) is consistent with the diameter of the receiving groove (102), and the thickness of the limiting mating block (3) is less than the depth of the receiving groove (102).
3. The wire harness connector with an anti-detachment structure according to claim 2, characterized in that, When the bottom surface of the limiting mating block (3) contacts the bottom surface of the inner end of the receiving groove (102), the bottom end of the limiting stud (302) is inserted into the limiting slot (201); when the top surface of the limiting mating block (3) and the top surface of the limiting mating protrusion (101) are on the same horizontal plane, the bottom end of the limiting stud (302) is completely received inside the threaded through hole (103).
4. The wire harness connector with an anti-detachment structure according to claim 3, characterized in that, The limiting and fitting block (3) has an elliptical groove (301) at the axial part of the top surface; it also includes a plug block (4), the structural dimensions of which match the structural dimensions of the plug groove (301); the plug block (4) has a hexagonal groove (401) at the axial part of the top surface.
5. The wire harness connector with an anti-detachment structure according to claim 4, characterized in that, A circular groove structure is provided in the center of the bottom surface of the inner end of the insertion groove (301) for resetting and storing. A rotating block (305) is rotatably mounted on the bottom of the inner end of the resetting and storing groove (303) via a bearing (304). A spring resetting component (306) is fixedly mounted on the top surface of the rotating block (305). In its natural state, the top of the spring resetting component (306) is higher than the bottom surface of the inner end of the insertion groove (301).