American-standard self-locking nut structure
By designing a self-locking nut structure based on American standards and utilizing a combination of disc springs and nylon rings, the problem of traditional nuts loosening under vibration and impact was solved, achieving a stable connection in harsh environments.
Patent Information
- Application Number
- CN202520476791.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Traditional nuts are prone to loosening under vibration, impact, and temperature changes, leading to connection failure and causing safety accidents or equipment malfunctions.
A self-locking nut structure based on American standard was designed, which uses a combination of disc spring and nylon ring to maintain locking force and prevent loosening by utilizing elastic deformation and friction.
Under vibration and impact, self-locking nuts can automatically compensate for preload, maintain locking force, improve connection stability and prevent loosening, and enhance safety.
Smart Images
Figure CN223964763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nut technology, and in particular to a structure of an American standard self-locking nut. Background Technology
[0002] A nut is a part that is screwed together with a bolt or thread to provide a fastening effect.
[0003] In mechanical connections, traditional nuts are prone to loosening due to factors such as vibration, impact, and temperature changes, leading to connection failure and causing safety accidents or equipment malfunctions. For example, in high-speed, high-vibration equipment such as aircraft engines and automobile engines, loose nuts can have serious consequences. Utility Model Content
[0004] The purpose of this invention is to solve the problem that traditional ordinary nuts are prone to loosening due to factors such as vibration, impact, and temperature changes, leading to connection failure, safety accidents, or equipment malfunctions. Therefore, this invention proposes a self-locking nut structure based on American standards.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a standard self-locking nut structure, comprising a nut body, a limiting block fixedly connected to one end of the nut body, a threaded groove through the interior of the nut body, a telescopic groove on the outer wall of the other end of the nut body, a pad movably connected to the inner wall of the telescopic groove, a compression groove on the inner wall of the pad, a disc spring I between the inner wall of the compression groove and the end face of the nut body, a disc spring II on one side of the disc spring I, and the disc spring I and disc spring II are disposed opposite each other inside the compression groove.
[0006] Preferably, a nylon ring is fixedly embedded in the inner wall of the limiting block, and the inner diameter of the nylon ring is larger than the inner diameter of the threaded groove.
[0007] Preferably, the inner wall of the telescopic groove is fixedly connected with a protrusion, and the outer wall of the pad is provided with a limiting groove, and the protrusion and the limiting groove are movably connected.
[0008] Preferably, an anti-slip groove is formed on the outer wall of one end of the pad.
[0009] Preferably, a rubber pad is fixedly connected to the other end of the pad.
[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0011] 1. In this utility model, through the expansion and contraction of the pad in the expansion groove, after the utility model is tightened, the disc spring one and disc spring two are compressed in the compression groove. Thus, by utilizing the elastic deformation of disc spring one and disc spring two, when the utility model is subjected to vibration causing the pre-tightening force to decrease, disc spring one and disc spring two automatically compensate for the pressure, maintain the locking force, and improve the self-locking effect of this utility model.
[0012] 2. In this utility model, the threaded groove is connected to the external thread of the screw by rotating the nut body. During the tightening process of this utility model and the screw, the nylon ring undergoes deformation contact, thereby increasing the friction force and preventing the nut from loosening. Under vibration and impact, it can always maintain the clamping force on the screw. Combined with the elastic effect of the spring, it further improves the self-locking ability of this utility model and improves the connection stability of this utility model. Attached Figure Description
[0013] Figure 1 This utility model provides a three-dimensional structural diagram of a self-locking nut structure conforming to American Standard.
[0014] Figure 2 This utility model provides a rear view structural diagram of a US standard self-locking nut structure;
[0015] Figure 3 This utility model provides an internal structural cross-sectional view of an American standard self-locking nut structure;
[0016] Figure 4 This utility model proposes a structure for a self-locking nut conforming to American standards. Figure 3 Enlarged view of the structure at point A in the middle.
[0017] Illustrations: 1. Nut body; 11. Expansion groove; 12. Protrusion; 2. Limiting block; 3. Nylon ring; 4. Threaded groove; 5. Washer plate; 51. Anti-slip groove; 52. Limiting groove; 53. Rubber pad; 54. Compression groove; 55. Disc spring one; 56. Disc spring two. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Example 1: As Figure 1- Figure 4 As shown, this utility model provides a structure for an American standard self-locking nut, including a nut body 1, a limiting block 2 fixedly connected to one end of the nut body 1, a threaded groove 4 through the interior of the nut body 1, a telescopic groove 11 on the outer wall of the other end of the nut body 1, a pad 5 movably connected to the inner wall of the telescopic groove 11, a compression groove 54 on the inner wall of the pad 5, a disc spring 55 between the inner wall of the compression groove 54 and the end face of the nut body 1, a disc spring 56 on one side of the disc spring 55, and the disc spring 55 and the disc spring 56 are arranged opposite each other inside the compression groove 54.
[0021] The specific settings and functions of this embodiment are described in detail below. Through the expansion and contraction of the pad 5 in the expansion groove 11, after the present invention is tightened, the disc spring 55 and the disc spring 56 are compressed in the compression groove 54. By utilizing the elastic deformation of the disc spring 55 and the disc spring 56, when the preload is reduced due to vibration, the disc spring 55 and the disc spring 56 automatically compensate for the pressure, maintain the locking force, and improve the self-locking effect of the present invention.
[0022] Example 2: Figure 1 - Figure 4 As shown, a nylon ring 3 is fixedly embedded in the inner wall of the limiting block 2. The inner diameter of the nylon ring 3 is larger than the inner diameter of the threaded groove 4. A protrusion 12 is fixedly connected to the inner wall of the telescopic groove 11. A limiting groove 52 is opened on the outer wall of the pad 5. The protrusion 12 and the limiting groove 52 are movably connected. An anti-slip groove 51 is opened on the outer wall of one end of the pad 5. A rubber pad 53 is fixedly connected to the other end of the pad 5.
[0023] The overall effect of this embodiment is that by rotating the nut body 1 to connect the threaded groove 4 with the external thread of the screw, the nylon ring 3 deforms and contacts during the tightening process of this utility model with the screw, thereby increasing the friction and preventing the nut from loosening. Under vibration and impact, it can always maintain the clamping force on the screw. Combined with the elastic effect of the spring, it further improves the self-locking ability of this utility model and improves the connection stability of this utility model. Through the connection between the protrusion 12 and the limiting groove 52, the movement of the pad 5 is limited and guided.
[0024] The usage and working principle of this device are as follows: During use, the threaded groove 4 is connected to the external thread of the screw by rotating the nut body 1. During the tightening process of this device with the screw, the nylon ring 3 undergoes deformation contact, thereby increasing the friction. Through the expansion and contraction of the pad 5 in the expansion groove 11, after tightening, the disc spring 55 and disc spring 56 are compressed in the compression groove 54. By utilizing the elastic deformation of disc spring 55 and disc spring 56, when the preload is reduced due to vibration, disc spring 55 and disc spring 56 automatically compensate for the pressure and maintain the locking force.
[0025] 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 other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A structure of a metric self-locking nut comprising a nut body (1), characterized in that: One end of the nut body (1) is fixedly connected with a limiting block (2), a threaded groove (4) is arranged through the inside of the nut body (1), an expansion groove (11) is arranged on the outer wall of the other end of the nut body (1), a backing plate (5) is movably connected to the inner wall of the expansion groove (11), a compression groove (54) is arranged on the inner wall of the backing plate (5), a disc spring one (55) is arranged between the inner wall of the compression groove (54) and the end face of the nut body (1), a disc spring two (56) is arranged on one side of the disc spring one (55), and the disc spring one (55) and the disc spring two (56) are oppositely arranged in the compression groove (54).
2. The structure of the metric self-locking nut according to claim 1, characterized in that: The inner wall of the limiting block (2) is fixedly connected with a nylon ring (3).
3. The structure of the metric self-locking nut according to claim 1, characterized in that: The inner wall of the expansion groove (11) is fixedly connected with a protruding block (12), the outer wall of the backing plate (5) is provided with a limiting groove (52), and the protruding block (12) and the limiting groove (52) are movably connected.
4. The metric self-locking nut structure according to claim 3, characterized in that: The outer wall of one end of the backing plate (5) is provided with an anti-skid groove (51).
5. The metric self-locking nut structure according to claim 4, characterized in that: The other end of the backing plate (5) is fixedly connected with a rubber pad (53).