A wiring harness connection locking mechanism
By employing a rotating threading structure and a telescopic inner tube design, the adaptability of wire harness connections in confined or curved spaces is solved, enabling multi-directional rotational locking and length compensation, thereby improving the reliability and installation efficiency of wire harness connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI FENGWEI INTELLIGENT MANUFACTURING CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-31
AI Technical Summary
Existing wire harness connection locking mechanisms cannot adapt to narrow or curved spaces, resulting in high wire harness bending and wear rates. Furthermore, errors during installation can easily lead to rework, affecting construction efficiency.
It adopts a rotating threading structure and a telescopic inner tube design, and uses the spherical fit between the ball head tube and the ball head clamping tube to achieve multi-directional rotational locking. Combined with the sealing rubber ring and the telescopic inner tube, it provides length compensation to adapt to connection requirements of different directions and lengths.
Eliminates assembly stress, reduces wire harness bending and wear, automatically compensates for installation errors, improves installation efficiency and connection reliability, and adapts to complex environments.
Smart Images

Figure CN224582791U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire harness locking, and in particular to a wire harness connection locking mechanism. Background Technology
[0002] The wire harness connection locking mechanism is a mechanism accessory used to lock and fix the wire harness installation position when the wire harness is installed and connected. It can prevent the wire harness from loosening and ensure that the wire harness is used stably for a long time. It is widely used in wire harness installation applications.
[0003] However, when using the locking mechanism, the existing mechanism has a fixed angle connection, which cannot adapt to narrow or curved spaces, causing the wire harness to be forced to bend. Therefore, the rigid connection method will cause assembly stress concentration, high wear rate at the bend, and significantly shorten the service life of the wire harness. At the same time, the existing technology requires the wire harness reserved length to be accurate to a certain value. Small length errors during the installation process often lead to rework and reinstallation. In complex wire harness systems, this causes the above-mentioned time waste and material loss, which seriously affects the construction efficiency. Utility Model Content
[0004] The main objective of this invention is to provide a wire harness connection locking mechanism that can effectively solve the technical problems raised in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A wire harness connection locking mechanism includes a main ring sleeve. One end of the main ring sleeve is integrally formed with a threaded tube. A retractable locking tube is fixedly installed at one end of the threaded tube. A sealing ring is inserted into the inner side of the retractable locking tube. A locking nut is threadedly connected to the outer side of the threaded tube. A rotating wire threading structure is movably connected to the other end of the main ring sleeve. A fixed sleeve is fixedly installed on one side of the rotating wire threading structure. A telescopic inner tube is movably installed at the end of the fixed sleeve away from the rotating wire threading structure.
[0007] As a further embodiment of this utility model, the locking nut is fitted on the outside of the shrink-lock tube, and the locking nut presses the shrink-lock tube inward to shrink.
[0008] As a further embodiment of this utility model, the sealing ring is located on one side of the main ring sleeve, and the sealing ring and the locking nut are arranged concentrically.
[0009] As a further embodiment of this utility model, the rotating threading structure includes a locking screw sleeve, a ball head retaining tube, a ball head tube, and a connecting tube. The connecting tube is threadedly installed at the other end of the main ring sleeve, the ball head tube is integrally formed at one end of the connecting tube, the ball head retaining tube is fixedly installed at one end of the fixed sleeve, and the locking screw sleeve is threadedly installed on the outside of the ball head retaining tube.
[0010] As a further embodiment of this utility model, the ball head tube is inserted into the inner side of the ball head retaining tube and the locking screw sleeve and is movably connected thereto, and the ball head tube and the connecting tube are provided with through holes inside.
[0011] As a further embodiment of this utility model, the end of the telescopic inner tube away from the fixed sleeve is integrally formed with a hexagonal connector. The telescopic inner tube is inserted into the interior of the fixed sleeve and moves in a telescopic manner with it. The telescopic inner tube and the interior of the fixed sleeve are connected in a through manner. Both the connecting ends of the telescopic inner tube and the fixed sleeve are provided with sealing rings.
[0012] Compared with existing technologies, this utility model has the following advantages: The rotating threading structure adopts the spherical fit of the ball-head tube and the ball-head clamping tube, and the angle is fixed by the locking screw sleeve. It supports multi-directional rotation, allowing the wire harness to be threaded and locked in different directions, eliminating assembly stress, adapting to the locking installation in narrow or curved spaces, and locking firmly after adjustment, reducing wire harness bending and wear, and improving installation efficiency. At the same time, the telescopic inner tube and the fixed sleeve are slidably fitted by the sealing ring, providing a certain length telescopic range, automatically compensating for wire harness reserved errors, reducing cutting waste. In complex wire harness systems, the installation time is shortened, and the internal through channel has no right-angle bends, reducing the risk of wire harness fatigue failure. It solves industry pain points such as sealing failure, space limitation, and installation errors in wire harness connections, significantly improving connection reliability and environmental adaptability, and is especially suitable for scenarios with high vibration and complex spaces such as vehicle and industrial equipment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of a wire harness connection locking mechanism according to the present invention;
[0014] Figure 2 This is a sectional view of a wire harness connection locking mechanism according to the present invention.
[0015] Figure 3 This is an enlarged view of the rotating threading structure in a wire harness connection locking mechanism of this utility model.
[0016] In the diagram: 1. Main ring sleeve; 2. Threaded tube; 3. Shrink locking tube; 4. Sealing ring; 5. Locking nut; 6. Rotary threading structure; 7. Fixed sleeve; 8. Telescopic inner tube; 9. Hexagonal connector; 61. Locking nut sleeve; 62. Ball head clamping tube; 63. Ball head tube; 64. Butt joint tube. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0018] like Figures 1-3 As shown, a wire harness connection locking mechanism is described; please refer to it carefully. Figures 1-3 It includes a main ring sleeve 1, one end of which is integrally formed with a threaded tube 2, one end of which is fixedly installed with a shrink-locking tube 3, a sealing ring 4 is inserted into the inner side of the shrink-locking tube 3, and a locking nut 5 is threadedly connected to the outer side of the threaded tube 2. The other end of the main ring sleeve 1 is movably connected with a rotating threading structure 6, one side of which is fixedly installed with a fixing sleeve 7, and the end of the fixing sleeve 7 away from the rotating threading structure 6 is movably installed with a telescopic inner tube 8.
[0019] Please refer to this carefully. Figure 2 and Figure 3 The locking nut 5 is fitted on the outside of the shrink locking tube 3, and the locking nut 5 presses the shrink locking tube 3 inward to shrink it.
[0020] Please refer to this carefully. Figure 3 The sealing ring 4 is located on one side of the main ring 1, and the sealing ring 4 and the locking nut 5 are arranged concentrically.
[0021] Specifically, the end of the wire harness passes through the locking nut 5, then enters the shrink locking tube 3 and the sealing ring 4, and exits from the main body ring 1. By tightening the locking nut 5 and the threaded tube 2, the shrink locking tube 3 and the sealing ring 4 are compressed and contracted, thereby connecting, locking and fixing the wire harness and sealing it.
[0022] Please refer to this carefully. Figure 2 and Figure 3 The rotating threading structure 6 includes a locking screw sleeve 61, a ball head retaining tube 62, a ball head tube 63, and a connecting tube 64. The connecting tube 64 is threadedly installed at the other end of the main body ring sleeve 1. The ball head tube 63 is integrally formed at one end of the connecting tube 64. The ball head retaining tube 62 is fixedly installed at one end of the fixed sleeve 7. The locking screw sleeve 61 is threadedly installed on the outside of the ball head retaining tube 62.
[0023] Please refer to this carefully. Figure 2 and Figure 3 The ball head tube 63 is inserted into the inner side of the ball head retaining tube 62 and the locking screw sleeve 61 and is movably connected thereto. The ball head tube 63 and the connecting tube 64 have through holes inside.
[0024] Specifically, the wire harness passes sequentially through the connector 64, ball-end tube 63, locking screw 61, fixing sleeve 7, and telescopic inner tube 8 to connect and install the wire harness to the installation position, and to lock and position the wire harness. After positioning the wire harness, the overall length of the connector is adjusted by utilizing the telescopic structure of the fixing sleeve 7 and the telescopic inner tube 8. This allows for adjustment of the wire harness connection length to accommodate wire harnesses of different reserved lengths. Simultaneously, the rotation of the ball-end tube 63 around the ball-end retaining connector 62 and locking screw 61 allows the wire harness to rotate at multiple angles after being fixed, facilitating the connection and locking of the wire harness in different directions. After adjustment, the ball-end tube 63 is locked and fixed by rotating the locking screw 61.
[0025] Please refer to this carefully. Figures 1-3 The telescopic inner tube 8 has a hexagonal connector 9 integrally formed at the end away from the fixed sleeve 7. The telescopic inner tube 8 is inserted into the interior of the fixed sleeve 7 and moves with it. The telescopic inner tube 8 and the interior of the fixed sleeve 7 are connected through each other. Both the telescopic inner tube 8 and the fixed sleeve 7 are provided with sealing rings at the connection ends.
[0026] Specifically, the wire harness eventually exits from the hexagonal connector 9, which can be threaded to the wire harness installation location.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A wiring harness connection locking mechanism, comprising a main body sleeve (1), one end of the main body sleeve (1) is integrally formed with a threaded tube (2), one end of the threaded tube (2) is fixedly installed with a shrink locking tube (3), characterized in that: A sealing ring (4) is inserted into the inner side of the shrink-locking tube (3), and a locking nut (5) is threaded onto the outer side of the threaded tube (2). A rotating threading structure (6) is movably connected to the other end of the main body ring (1). A fixed sleeve (7) is fixedly installed on one side of the rotating threading structure (6), and a telescopic inner tube (8) is movably installed on the end of the fixed sleeve (7) away from the rotating threading structure (6).
2. A wiring harness connector locking mechanism according to claim 1, wherein: The locking nut (5) is fitted on the outside of the shrink locking tube (3), and the locking nut (5) presses the shrink locking tube (3) inward to shrink.
3. A wiring harness connector locking mechanism according to claim 1, wherein: The sealing ring (4) is located on one side of the main ring (1), and the sealing ring (4) and the locking nut (5) are arranged concentrically.
4. A wiring harness connector locking mechanism as described in claim 1, wherein: The rotating threading structure (6) includes a locking screw sleeve (61), a ball head retaining tube (62), a ball head tube (63), and a connecting tube (64). The connecting tube (64) is threadedly installed at the other end of the main body ring sleeve (1). The ball head tube (63) is integrally formed at one end of the connecting tube (64). The ball head retaining tube (62) is fixedly installed at one end of the fixed sleeve (7). The locking screw sleeve (61) is threadedly installed on the outside of the ball head retaining tube (62).
5. A wiring harness connector locking mechanism according to claim 4, wherein: The ball head tube (63) is inserted into the inside of the ball head retaining tube (62) and the locking nut (61) and is movably connected thereto. The ball head tube (63) and the connecting tube (64) have through holes inside.
6. The wire harness connection locking mechanism according to claim 1, characterized in that: The telescopic inner tube (8) has a hexagonal connector (9) integrally formed at the end away from the fixed sleeve (7). The telescopic inner tube (8) is inserted into the interior of the fixed sleeve (7) and moves in a telescopic manner with it. The telescopic inner tube (8) and the interior of the fixed sleeve (7) are connected in a through manner. Both the telescopic inner tube (8) and the fixed sleeve (7) are provided with sealing rings at the connection ends.