Anti-loosening nut capable of being used in combined mode

By designing a combinable anti-loosening nut, which uses a threaded sleeve and clamping rod structure to engage with the bolt, the problem of the nut loosening under vibration is solved, and the stability of the bolt connection is achieved.

CN223648278UActive Publication Date: 2025-12-09HAIYAN HONGMAO HARDWARE PROD CO LTD
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Patent Information

Application Number
CN202520441522.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2025-12-09
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

The existing nut structure is simple and easily loosens under external vibration, resulting in reduced tightness of the connection with the bolt.

Method used

The design includes a modular anti-loosening nut assembly that is worn over the bolt. The assembly contains a ball, a screw, an auxiliary toothed plate, a threaded sleeve, a grooved frame, a spring, and a locking rod. The threaded sleeve moves the grooved frame downward to adjust the spacing, and the locking rod engages in the bolt groove, using the spring's rebound force to achieve reinforcement.

Benefits of technology

It effectively reduces the possibility of the nut assembly loosening under external vibration and maintains the tightness of the connection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an anti-loosening nut capable of being used in a combined mode, which comprises a bolt, a nut assembly is sleeved outside the bolt, and a group of auxiliary assemblies are symmetrically arranged inside the nut assembly. The auxiliary assembly comprises a clamping ball, the clamping ball is movably clamped on the inner side of the nut assembly, and a screw rod is fixedly connected to the surface of the clamping ball. After the nut assembly is screwed to the needed position of the outer surface of the bolt, the threaded cylinder frame is rotated on the basis that the auxiliary toothed plate is pinched, so that the threaded cylinder frame effectively drives the groove frame to move downwards; when the end of the clamping rod is flush with a clamping groove formed in the surface of the bolt, the clamping rod is moved to the opposite face of the clamping groove, the pull rod always drives the clamping rod to compress the spring in the moving process of the clamping rod, then the pull rod is loosened, and the end of the clamping rod pops up and is effectively clamped into the clamping groove in the surface of the bolt under the influence of resilience force of the spring. The position of the nut assembly is reinforced, and the possibility that the nut assembly is loosened from the bolt due to external vibration is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of nut technology, and in particular to anti-loosening nuts that can be used in combination. Background Technology

[0002] A nut is a fastener that is screwed onto a bolt or threaded rod to secure a fastener. It is an essential component in all manufacturing machinery. Based on the material, nuts are classified into several types, including carbon steel, stainless steel, and non-ferrous metals (such as copper).

[0003] Existing nuts have a simple structure and are prone to loosening from bolts when subjected to external vibrations, thus reducing the tightness of the connection between the nut and bolt. In view of this, we propose a combination of anti-loosening nuts. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a combination of anti-loosening nuts to solve the technical problem that the existing nuts have a simple structure and are prone to loosening with bolts when subjected to external vibrations during use, thereby reducing the tightness of the connection with the bolts.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a combination-usable anti-loosening nut is designed, including a bolt, a nut assembly is sleeved on the outside of the bolt, and a set of auxiliary components are symmetrically arranged inside the nut assembly;

[0006] The auxiliary component includes a retaining ball that is movably engaged inside the nut assembly. A screw is fixedly connected to the surface of the retaining ball, and an auxiliary toothed plate is fixedly sleeved on the surface of the screw. A threaded sleeve is movably sleeved on the outside of the screw, and a grooved frame is movably engaged at the bottom of the threaded sleeve. A spring is provided inside the grooved frame, and a retaining rod is connected to one end of the spring near the opening of the grooved frame. A pull rod is fixedly connected to the surface of the retaining rod, and a sliding groove is fitted to the outside of the pull rod.

[0007] Preferably, the screw and the threaded sleeve are connected by a thread, and the slotted sleeve can rotate freely at the bottom of the threaded sleeve.

[0008] Preferably, the clamp rod is formed into an elastic structure by a spring and a groove frame, the clamp rod is inverted T-shaped, and the bolt surface is provided with a groove that matches the end of the clamp rod.

[0009] Preferably, the slot frame and the slide groove are integrally formed, and the pull rod forms an engaging and sliding structure with the slot frame through the slide groove.

[0010] Preferably, the nut assembly includes a nut body, which is fitted onto the surface of the bolt, and a limiting groove is formed on the inner side of the nut body.

[0011] Preferably, the ball and the partial screw are engaged in the limiting groove, and the ball and the partial screw can move in a circular motion along the limiting groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In this utility model, after the nut assembly is screwed to the desired position on the outer surface of the bolt, the threaded sleeve is rotated while the auxiliary toothed plate is held, so that the threaded sleeve effectively drives the slotted frame to move down, thereby adjusting the distance between the screw and the threaded sleeve. When the end of the locking rod is flush with the slot opened on the bolt surface, the locking rod is moved to the opposite side of the slot. During the movement of the locking rod, the pull rod always drives the locking rod to compress the spring. After releasing the pull rod, the end of the locking rod pops out and effectively engages with the slot on the bolt surface due to the spring rebound force, thereby reinforcing the position of the nut assembly and reducing the possibility of the nut assembly being subjected to external vibration and the bolt becoming loose.

[0014] 2. The limiting groove in this utility model facilitates the locking and limiting of a set of auxiliary components without affecting the rotation of the nut body on the bolt surface. Furthermore, the set of auxiliary components can be rotated and adjusted inside the limiting groove, making it convenient for the locking rod to cooperate with the locking groove on the bolt surface. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0017] Figure 3 This is a schematic diagram of the disassembled structure of this utility model;

[0018] Figure 4 This is a partial cross-sectional structural diagram of the present invention;

[0019] In the diagram: 1. Bolt; 2. Nut assembly; 3. Auxiliary components;

[0020] 201. Nut body; 202. Limiting groove;

[0021] 301. Ball clamp; 302. Screw; 303. Auxiliary toothed plate; 304. Threaded sleeve; 305. Groove frame; 306. Spring; 307. Clamping rod; 308. Pull rod; 309. Slide groove. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] For combinable anti-loosening nuts, see [link / reference]. Figures 1 to 4It includes a bolt 1, a nut assembly 2 is sleeved on the outside of the bolt 1, and a set of auxiliary components 3 are symmetrically arranged inside the nut assembly 2;

[0024] Auxiliary component 3 includes a retaining ball 301, which is movably engaged inside the nut assembly 2. A screw 302 is fixedly connected to the surface of the retaining ball 301. An auxiliary toothed plate 303 is fixedly sleeved on the surface of the screw 302. A threaded sleeve 304 is movably sleeved on the outside of the screw 302. A slotted frame 305 is movably engaged at the bottom of the threaded sleeve 304. The screw 302 and the threaded sleeve 304 are threadedly connected. The slotted frame 305 can rotate freely at the bottom of the threaded sleeve 304. A spring 306 is provided inside the slotted frame 305. 06 A locking rod 307 is connected to one end near the opening of the slot frame 305. Furthermore, the locking rod 307 forms an elastic structure with the slot frame 305 through the spring 306. The locking rod 307 is inverted T-shaped. The bolt 1 has a locking groove that matches the end of the locking rod 307. A pull rod 308 is fixed to the surface of the locking rod 307. A sliding groove 309 is attached to the outside of the pull rod 308. Furthermore, the slot frame 305 and the sliding groove 309 are integrally formed. The pull rod 308 forms a locking and sliding structure with the slot frame 305 through the sliding groove 309. In this invention, after the nut assembly 2 is screwed to the desired position on the outer surface of the bolt 1, the threaded sleeve 304 is rotated while the auxiliary toothed plate 303 is held. This causes the threaded sleeve 304 to effectively drive the slotted frame 305 downward, thereby adjusting the distance between the screw 302 and the threaded sleeve 304. When the end of the locking rod 307 is flush with the slot on the surface of the bolt 1, the locking rod 307 is moved to the opposite side of the slot. During the movement of the locking rod 307, the pull rod 308 always drives the locking rod 307 to compress the spring 306. After releasing the pull rod 308, the end of the locking rod 307 pops out and effectively engages with the slot on the surface of the bolt 1 due to the rebound force of the spring 306. This strengthens the position of the nut assembly 2 and reduces the possibility of the nut assembly 2 being subjected to external vibration and the bolt 1 becoming loose.

[0025] It is worth noting that the nut assembly 2 includes a nut body 201, which is fitted onto the surface of the bolt 1. A limiting groove 202 is formed inside the nut body 201, in which a retaining ball 301 and a partial screw 302 engage in the limiting groove 202. The retaining ball 301 and the partial screw 302 can move in a circular motion along the limiting groove 202. In this invention, the limiting groove 202 facilitates the engagement and limiting of a set of auxiliary components 3 without affecting the rotation of the nut body 201 on the bolt 1 surface. Furthermore, the set of auxiliary components 3 can be rotated and adjusted within the limiting groove 202, facilitating the engagement of the retaining rod 307 with the groove on the bolt 1 surface.

[0026] Working principle: The limiting groove 202 facilitates the locking and limiting of a set of auxiliary components 3 without affecting the rotation of the nut body 201 on the surface of the bolt 1. The set of auxiliary components 3 can be rotated and adjusted inside the limiting groove 202. After screwing the nut assembly 2 to the required position on the outer surface of the bolt 1, the threaded sleeve 304 is rotated while holding the auxiliary toothed plate 303, causing the threaded sleeve 304 to drive the groove frame 305 to move down, thereby adjusting the distance between the screw 302 and the threaded sleeve 304. When the end of the locking rod 307 is flush with the groove on the surface of the bolt 1, the locking rod 307 is moved to the opposite side of the groove. During the movement of the locking rod 307, the pull rod 308 always drives the locking rod 307 to compress the spring 306. After releasing the pull rod 308, the end of the locking rod 307 pops out and locks into the groove on the surface of the bolt 1 due to the rebound force of the spring 306, thereby reinforcing the position of the nut assembly 2 and reducing the possibility of the nut assembly 2 being subjected to external vibration and the bolt 1 becoming loose.

[0027] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A combinable anti-loosening nut, comprising a bolt (1), characterized in that, The bolt (1) is fitted with a nut assembly (2) on the outside, and a set of auxiliary components (3) are symmetrically arranged inside the nut assembly (2); The auxiliary component (3) includes a retaining ball (301), which is movably engaged inside the nut assembly (2). A screw (302) is fixedly connected to the surface of the retaining ball (301). An auxiliary toothed plate (303) is fixedly sleeved on the surface of the screw (302). A threaded sleeve (304) is movably sleeved on the outside of the screw (302). A slotted frame (305) is movably engaged at the bottom of the threaded sleeve (304). A spring (306) is provided inside the slotted frame (305). A retaining rod (307) is connected to one end of the spring (306) near the opening of the slotted frame (305). A pull rod (308) is fixedly connected to the surface of the retaining rod (307). A sliding groove (309) is attached to the outside of the pull rod (308).

2. The combinable anti-loosening nut as described in claim 1, characterized in that, The screw (302) and the threaded sleeve (304) are connected by a thread, and the slotted frame (305) can rotate freely at the bottom of the threaded sleeve (304).

3. The combinable anti-loosening nut as described in claim 1, characterized in that, The clamp (307) forms an elastic structure with the spring (306) and the slot frame (305). The clamp (307) is in the shape of an inverted T. The bolt (1) has a groove on its surface that matches the end of the clamp (307).

4. The combinable anti-loosening nut as described in claim 1, characterized in that, The slot frame (305) and the slide groove (309) are integrally formed, and the pull rod (308) forms an engaging and sliding structure with the slot frame (305) through the slide groove (309).

5. The combinable anti-loosening nut as described in claim 1, characterized in that, The nut assembly (2) includes a nut body (201), which is fitted onto the surface of the bolt (1), and a limiting groove (202) is provided on the inner side of the nut body (201).

6. The combinable anti-loosening nut as described in claim 5, characterized in that, The ball (301) and the local screw (302) are engaged in the limiting groove (202), and the ball (301) and the local screw (302) can move in a circular motion along the limiting groove (202).