Anti-backout threaded cable accessory and connector assembly

Abstract

The utility model relates to a kind of anti-back thread cable accessory and connector assembly, the cable accessory includes sleeve and the connecting nut of rotation being set at the outer periphery of the sleeve front end, the sleeve outer periphery is equipped with locking sleeve along radial direction, the front end of the locking sleeve and connecting nut are matched to realize circumferential rotation stop by concave-convex structure, rear end and sleeve are matched to realize circumferential rotation stop by concave-convex structure;The connection of the radial position of the locking sleeve makes locking sleeve keep in the state of circumferential rotation stop with connecting nut and sleeve.The utility model cable accessory is added locking sleeve along radial direction assembly fixed and disassembled between connecting nut and sleeve, the anti-back of connecting nut is realized by the circumferential rotation stop of locking sleeve and connecting nut and sleeve, not only simple structure, and assembly and disassembly operation are simple, can realize quick assembly and disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of connector accessories technology, specifically relating to an anti-reverse threaded cable accessory and connector assembly. Background Technology

[0002] The connector tail accessory is fixed to the connector housing via a connecting nut. However, during use, the connecting nut can loosen due to environmental vibrations, making the tail accessory connection unreliable and affecting the stability of the connector. To address the issue of loose threaded connections in the tail accessory, existing technologies typically use methods such as drilling fuse holes or applying thread-locking adhesive. However, these methods are inconvenient to operate and lack reliability. Summary of the Invention

[0003] The purpose of this utility model is to provide a novel anti-reverse threaded cable accessory, which adds a locking sleeve between the connecting nut and the sleeve for radial assembly, fixation, and disassembly. The locking sleeve simultaneously locks the connecting nut and the sleeve to prevent the connecting nut from retracting.

[0004] The purpose of this utility model and the technical problem it solves are achieved by the following technical solution. According to this utility model, an anti-reverse threaded cable accessory includes a sleeve 3 and a connecting nut 1 rotatably disposed on the outer periphery of the front end of the sleeve 3. A locking sleeve 5 is radially mounted on the outer periphery of the sleeve 3. The front end of the locking sleeve 5 engages with the connecting nut 1 through a concave-convex structure to achieve circumferential anti-rotation, and the rear end engages with the sleeve 3 through a concave-convex structure to achieve circumferential anti-rotation. A connecting member radially limits the locking sleeve 5, keeping it in a state of circumferential anti-rotation with the connecting nut 1 and the sleeve 3.

[0005] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0006] In the aforementioned anti-reverse threaded cable accessory, the front end face of the locking sleeve 5 and the tail end face of the connecting nut 1 are engaged by at least one tooth and tooth groove.

[0007] In the aforementioned anti-reverse threaded cable accessory, the sleeve 3 and the locking sleeve 5 achieve circumferential anti-rotation through the cooperation of at least one convex key and keyway.

[0008] In the aforementioned anti-reverse threaded cable accessory, the sleeve 3 and the locking sleeve 5 achieve circumferential anti-rotation through the cooperation of the convex key / keyway distributed on the inner circumference of the locking sleeve 5 and the keyway / convex key on the outer circumference of the sleeve 3.

[0009] In the aforementioned anti-reverse threaded cable accessory, the sleeve 3 and the locking sleeve 5 achieve circumferential anti-rotation through the cooperation of the convex key / keyway distributed on the tail end face of the locking sleeve 5 and the keyway / convex key distributed on the outer circumferential platform 33 of the sleeve 3.

[0010] In the aforementioned anti-reverse threaded cable accessory, the front end of the locking sleeve 5 is axially stopped and limited by the connecting nut 1, and the rear end is axially stopped and limited by the ring platform 33.

[0011] In the aforementioned anti-reverse threaded cable accessory, the extension length of the keyway along the axial direction of the sleeve 3 is greater than the extension length of the convex key that is adapted to the keyway, so that the locking sleeve 5 can float axially, and within the axial floating stroke of the locking sleeve 5, the locking sleeve 5 always maintains circumferential anti-rotation with the connecting nut 1 and the sleeve 3.

[0012] The aforementioned anti-reverse threaded cable accessory, wherein the connector is a cable tie 6.

[0013] The aforementioned anti-reverse threaded cable accessory, wherein the locking sleeve 5 is a cylindrical structure composed of two arc-shaped sleeves that are interlocked with each other.

[0014] In the aforementioned anti-reverse threaded cable accessory, the locking sleeve 5 has two limiting platforms 53 spaced apart along the axial direction on its outer periphery, and the cable tie 6 is tied in the annular groove between the two limiting platforms 5.

[0015] Compared with the prior art, this utility model has significant advantages and beneficial effects. Through the above technical solution, this utility model achieves considerable technological advancement and practicality, and has broad industrial application value. It possesses at least the following advantages:

[0016] This utility model cable accessory adds a locking sleeve between the connecting nut and the sleeve for radial assembly, fixation, and disassembly. The locking sleeve prevents the connecting nut from retracting by circumferentially preventing rotation between the connecting nut and the sleeve. It is not only simple in structure, but also requires no special tools for assembly and disassembly, making it easy to operate and enabling quick assembly and disassembly.

[0017] The locking sleeve of this cable accessory, which achieves anti-loosening locking, is located between the connecting nut and the sleeve, without increasing the radial dimension of the accessory. Furthermore, the locking sleeve is assembled radially, requiring no axial assembly space.

[0018] This utility model cable accessory can achieve cyclic unlocking and locking. When unlocking, the cable accessory and connector can be connected and separated normally. When locking, the threaded connection between the cable accessory and connector does not retract. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the anti-reverse threaded cable accessory of Embodiment 1 of this utility model;

[0020] Figure 2 This is an exploded view of the anti-reverse threaded cable accessory of Embodiment 1 of this utility model;

[0021] Figure 3 This is an exploded view of the anti-reverse threaded cable accessory of Embodiment 2 of this utility model.

[0022] [Explanation of Key Component Symbols]

[0023] 1-Connecting nut

[0024] 11-First annular groove

[0025] 12-tooth groove

[0026] 2-Rubber ring

[0027] 3-sleeve

[0028] 31-Second annular groove

[0029] 32-keyway

[0030] 33-Around Taiwan

[0031] 34-Anti-rotation tooth

[0032] 35-groove

[0033] 4-Snap ring

[0034] 5-Locking sleeve

[0035] 51-Locking teeth

[0036] 52-First Convex Key

[0037] 53-Limiting Platform

[0038] 54-Second Convex Key

[0039] 6-Cable ties Detailed Implementation

[0040] To further illustrate the technical means and effects adopted by this utility model to achieve the intended purpose of the invention, the following detailed description of the specific implementation method, structure, features and effects of the anti-reverse threaded cable accessory proposed according to this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0041] Please see Figure 1 and Figure 2 This is a structural schematic diagram of the anti-reverse threaded cable accessory of Embodiment 1 of this utility model. The cable accessory includes a straight sleeve 3 extending along the axial direction and a connecting nut 1 rotatably disposed on the outer periphery of the front end of the sleeve 3. The connecting nut 1 is tensilely connected to the sleeve 3 and can realize the connection between the sleeve 3 and the connector housing through the engagement of the inner periphery thread of its front end with the outer periphery thread of the connector housing.

[0042] The cable accessory also includes a locking sleeve 5. In this embodiment, the locking sleeve 5 is a cylindrical structure composed of two arc-shaped sleeves that are fastened together. The two arc-shaped sleeves that make up the locking sleeve 5 are radially fastened to each other on the outer periphery of the sleeve 3, and the two arc-shaped sleeves are also kept in a fastened state by a connector. In this state, the locking sleeve 5 also has a circumferential anti-rotation fit with the connecting nut 1 and the sleeve 3 respectively. In this embodiment, the tail of the connecting nut 1 has circumferentially spaced toothed grooves 12, and at least one front end face of each arc-shaped sleeve that makes up the locking sleeve 5 is provided with at least one locking tooth 51. The locking sleeve 5 achieves a circumferential anti-rotation fit between the locking tooth 51 and the toothed groove 12 at the tail of the connecting nut 1. In other embodiments of this invention, the locking tooth 51 and the toothed groove 12 can also be provided in the same number, with each locking tooth 51 corresponding to one toothed groove 12. Both can be provided in one or multiple ways. Preferably, the locking tooth 51 is a rectangular tooth, and the toothed groove 12 is a rectangular groove.

[0043] In this embodiment of the invention, the locking sleeve 5 achieves a circumferential anti-rotation fit with the sleeve 3 by at least one first protruding key 52 on its inner circumference engaging with the keyway 32 on the outer circumference of the sleeve 3. In this embodiment, the keyway 32 is a groove extending radially along the outer circumference of the sleeve 3. Preferably, each of the two arc-shaped sleeves constituting the locking sleeve 5 has a first protruding key 52 on its inner circumference.

[0044] In this embodiment, the sleeve 3 is further provided with an annular platform 33 on its outer periphery. When the locking sleeve 5 is wrapped around the outer periphery of the sleeve 3 and prevents rotation of the sleeve and the connecting nut 1 in the circumferential direction, the annular platform 33 axially stops and limits the tail end face of the locking sleeve 5, and the front end face of the locking sleeve 5 is axially stopped and limited by the tail end face of the connecting nut 1. Preferably, the axial extension length of the keyway 32 in the sleeve 3 is much greater than the length of the first convex key 52, so that the first convex key 52 has a certain axial floating amount in the keyway 32, thereby reducing the positioning accuracy requirements between the first convex key 52 and the keyway 32. In other embodiments of this utility model, the design of the ring platform 33 can be omitted, and the circumferential anti-rotation and axial limiting of the locking sleeve 5 can be achieved directly through the cooperation of the key and keyway and the cooperation of the tooth and tooth groove. In the axial direction, the key can float axially in the keyway, and the tooth can also float axially in the tooth groove, so that the locking sleeve 5 can float axially. However, within its floating stroke, the first convex key 52 is always in circumferential anti-rotation cooperation with the keyway 32, and the locking tooth 51 always maintains circumferential anti-rotation cooperation with the tooth groove 12.

[0045] In this embodiment of the invention, the connecting member is a cable tie 6, which binds the two arc-shaped sleeves that make up the locking sleeve 5 together, keeping them in a state of circumferential limitation on the sleeve 3. Preferably, the cable tie 6 is a steel cable tie. When it is necessary to unlock the connecting nut 1, the steel cable tie is removed, and the two arc-shaped sleeves that make up the locking sleeve 5 are separated radially. Preferably, two limiting platforms 53 are distributed at intervals along the axial direction on the outer circumference of the locking sleeve 5, and the cable tie 6 is bound in the annular groove between the two limiting platforms 53, thereby axially limiting the cable tie 6 through the two limiting platforms 53.

[0046] In another embodiment of the present invention, the connector includes a locking platform located on the outer periphery of one of the arc-shaped sleeves and a locking hook located on the other arc-shaped sleeve, and the two arc-shaped sleeves are kept in a fastened state by the cooperation of the locking platform and the locking hook.

[0047] In this embodiment of the invention, the connecting nut 1 and the sleeve 3 are connected by a retaining spring 4 for tensile strength. The outer ring of the retaining spring 4 is located in the first annular groove 11 on the inner circumference of the connecting nut 1, and the inner ring is located in the second annular groove 31 on the outer circumference of the sleeve 3. To prevent the retaining spring 4 from coming out of the first annular groove 11, the second annular groove 31 is a stepped groove that is shallow at the front and deep at the back. The deep groove at the rear end of the second annular groove 31 is used to accommodate the retaining spring 4, so that when the connecting nut 1 is assembled, the retaining spring 4 can be completely inserted into the second annular groove 31, preventing it from interfering with the connecting nut 1. The shallow groove at the front end of the second annular groove 31 is used to limit the inner circumference of the retaining spring 4, preventing it from coming out of the first annular groove 11. During assembly, the snap ring 4 is first installed in the deep groove at the rear end of the second annular groove 31. Then, the connecting nut 1 is put on the sleeve 3. When the first annular groove 11 on the connecting nut 1 moves to the position corresponding to the deep groove at the rear end of the second annular groove 31, the snap ring 4 opens and enters the first annular groove 11. The connecting nut 1 is moved forward axially until it is axially stopped and limited. At this time, the connecting nut is assembled in place. The outer ring of the snap ring 4 is located in the first annular groove 11, and the inner ring is located in the shallow groove at the front end of the second annular groove 31, and is radially limited by the bottom of the shallow groove.

[0048] In another embodiment of this utility model, the connecting nut 1 and the sleeve 3 are connected in a tensile manner through the engagement of inner and outer protrusions. The connecting nut 1 has an inner protrusion, and the sleeve 3 has an outer protrusion on its outer periphery. The front end face of the inner protrusion and the rear end face of the outer protrusion engage to achieve a tensile connection between the connecting nut 1 and the sleeve 3. In this embodiment, the connecting nut 1 can only be assembled onto the outer periphery of the sleeve 3 from back to front.

[0049] The connecting nut 1 also has an annular groove on its inner circumference at the front end. A rubber ring 2 is provided within this groove to seal the connecting nut 1 against the connector housing and sleeve 3, preventing external liquids or dust from entering the connector and accessories through the connection point between the accessory and the connector housing. In this embodiment, at least two raised ribs are provided on both the inner and outer circumferential surfaces of the rubber ring 2 to enhance its sealing effect.

[0050] The sleeve 3 has anti-rotation teeth 34 evenly distributed in the circumferential direction on the front end face. The anti-rotation teeth 34 can mesh with the teeth on the tail end face of the connector housing to achieve circumferential anti-rotation with the connector housing.

[0051] The outer periphery of the sleeve 3 is also provided with a plurality of toothed grooves extending circumferentially and spaced apart axially. These toothed grooves are used to enhance the friction between the cable shielding layer and the outer peripheral surface of the sleeve 3, so as to achieve reliable fixation of the cable shielding layer on the outer periphery of the sleeve 3. An annular anti-detachment platform is also provided on the outer periphery of the sleeve 3 at positions before and after the toothed grooves.

[0052] Please see Figure 3 This is an exploded view of the cable accessory according to Embodiment 2 of this utility model. The difference between this embodiment and Embodiment 1 is that the keyway 32 is a groove 35 distributed on the ring platform 33. In this case, the locking sleeve 5 achieves circumferential anti-rotation by cooperating with the keyway 35 on the ring platform 33 through the second protruding key 54 on its tail end face. At the same time, the front and rear end faces of the locking sleeve 5 are respectively stopped and limited by the tail end face of the connecting nut 1 and the front end face of the ring platform 33. Preferably, each of the two arc-shaped sleeve tails that make up the locking sleeve 5 is provided with a second protruding key 54, so that the locking sleeve 5 is provided with a set of second protruding keys 54 located on different arc-shaped sleeve tail end faces, while the ring platform 33 is provided with two sets of grooves 35. Each set of grooves can be adapted to the second protruding key 54 on the locking sleeve 5. The arrangement of the two sets of grooves 35 can realize the radial installation and disassembly of the locking sleeve 5 from different sides of the outer periphery of the sleeve 3, meeting different operation and use requirements.

[0053] Compared with Embodiment 1, Embodiment 2 of this utility model has the following distinguishing features: the sleeve 3 of this application has a bent structure. The locking sleeve 5 of this utility model has a structure for installation, fixing and disassembly in the radial direction, thereby enabling it to adapt to sleeves 3 with different structural forms.

[0054] The above description is only a preferred embodiment of the present utility model. However, in other embodiments of the present utility model, the locking sleeve 5 may also be an arc-shaped sleeve structure covering only one side of the outer circumference of the sleeve 3. The locking sleeve 5 is assembled, fixed, and removed radially from one side of the sleeve 3. The connecting member radially limits the locking sleeve 5, keeping it on the outer circumference of the sleeve 3, thereby maintaining a circumferential anti-rotation fit with the connecting nut 1 and the sleeve 3. The connecting member may be a cable tie 6 or a buckle structure composed of hooks and latches (the buckle structure is partially located on the locking sleeve 5 and partially located on the sleeve 3 or the connecting nut 1), etc., which can fix the locking sleeve 5 on the outer circumference of the sleeve 3.

[0055] In this invention, the circumferential anti-rotation between the locking sleeve 5, the sleeve 3, and the connecting nut 1 is achieved through a concave-convex structure. When the locking sleeve 5 contacts the end face of the connecting nut 1, the locking sleeve 5 and the connecting nut 1 are engaged by a key and keyway or a tooth and groove. That is, one of the locking sleeve 5 and the connecting nut 1 has a key / tooth, while the other has a keyway / groove. When the locking sleeve 5 is fitted around the outer periphery of the connecting nut 1, the locking sleeve 5 and the connecting nut 1 are still engaged by a key / tooth and keyway / groove. One of the key / tooth and keyway / groove is located on the inner wall of the locking sleeve 5, and the other is located on the outer periphery of the connecting nut 1. The locking sleeve 5 and the sleeve 3 are also engaged by a tooth and groove structure for circumferential anti-rotation.

[0056] This utility model also provides a connector assembly, which includes a connector and the aforementioned cable accessory. The cable accessory is threadedly locked to the tail of the connector housing by a connecting nut, and the locking sleeve 5 prevents loosening after the connecting nut is locked.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A threaded cable accessory for preventing backflow, comprising a sleeve and a connecting nut rotatably disposed on the outer periphery of the front end of the sleeve, characterized in that: A locking sleeve is radially fitted on the outer periphery of the sleeve. The front end of the locking sleeve engages with the connecting nut through a concave-convex structure to prevent circumferential rotation, and the rear end engages with the sleeve through a concave-convex structure to prevent circumferential rotation. The connecting piece that radially limits the locking sleeve keeps it in a state of circumferential anti-rotation with the connecting nut and the sleeve.

2. The anti-reverse threaded cable accessory according to claim 1, characterized in that: The front end face of the locking sleeve and the tail end face of the connecting nut are fitted together by at least one tooth and tooth groove.

3. The anti-reverse threaded cable accessory according to claim 2, characterized in that: The sleeve and the locking sleeve achieve circumferential anti-rotation through the cooperation of at least one convex key and a keyway.

4. The anti-reverse threaded cable accessory according to claim 3, characterized in that: The sleeve and the locking sleeve achieve circumferential anti-rotation through the cooperation of the convex keys / keyways distributed on the inner circumference of the locking sleeve and the keyways / convex keys on the outer circumference of the sleeve.

5. The anti-reverse threaded cable accessory according to claim 3, characterized in that: The sleeve and the locking sleeve achieve circumferential anti-rotation through the cooperation of the convex keys / keyways distributed on the tail end face of the locking sleeve and the keyways / convex keys distributed on the outer circumferential platform of the sleeve.

6. The anti-reverse threaded cable accessory according to claim 5, characterized in that: The front end of the locking sleeve is axially stopped and limited by the connecting nut, and the rear end is axially stopped and limited by the ring platform.

7. The anti-reverse threaded cable accessory according to claim 3, characterized in that: The extension length of the keyway along the sleeve axis is greater than the extension length of the convex key that matches the keyway, so that the locking sleeve can float axially, and within the axial floating stroke of the locking sleeve, the locking sleeve always maintains circumferential anti-rotation with the connecting nut and the sleeve.

8. The anti-reverse threaded cable accessory according to any one of claims 1-7, characterized in that: The connector is a cable tie.

9. The anti-reverse threaded cable accessory according to claim 8, characterized in that: The locking sleeve is a cylindrical structure composed of two arc-shaped sleeves that are fastened together.

10. The anti-reverse threaded cable accessory according to claim 9, characterized in that: The locking sleeve has two limiting platforms spaced apart along the axial direction on its outer periphery, and the cable tie is tied in the annular groove between the two limiting platforms.

11. A connector assembly comprising a connector and an accessory threadedly connected to the tail of the connector housing, characterized in that: The accessory is the anti-reverse threaded cable accessory as described in any one of claims 1-10.

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