Novel anti-loosening nut
By combining the externally inclined thickened nut with the inner washer, the problem of poor self-locking reliability of the nut under dynamic load is solved, achieving stable connection and anti-loosening effect, while maintaining the overall thickness and strength of the nut.
Patent Information
- Application Number
- CN202520501185.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Existing nuts have poor self-locking reliability under dynamic loads, and existing anti-loosening measures are inconvenient to install and remove, and may damage the nut structure and reduce its strength.
The structure employs an externally inclined thickened nut and an inner washer. The connection between the inner washer and the screw is directly assisted to ensure a stable connection, and the anti-loosening effect is achieved through the cooperation of the inner washer pin and the pin groove.
It achieves stability and firmness in the connection between the nut and the screw, is easy to install and does not affect the overall thickness and strength of the nut, resulting in a more stable structure.
Smart Images
Figure CN223839530U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of self-connecting fastener technology, specifically a novel anti-loosening nut. Background Technology
[0002] The working principle of a nut is based on the self-locking effect achieved through friction between the nut and the bolt. However, the reliability of this self-locking decreases under dynamic loads. In some critical situations, we take measures to prevent loosening and ensure the reliable tightening of the nut.
[0003] Existing lock nuts typically have a through-hole drilled from the outer surface of the nut to the inner threaded surface, used to screw in a small-diameter countersunk screw. The purpose is to apply a centripetal force to the thread to prevent the lock nut from loosening. However, the installation and removal of such lock nuts are inconvenient and can damage the original structure of the nut, reducing its strength.
[0004] Therefore, this utility model provides a novel anti-loosening nut to solve the above problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a novel anti-loosening nut that solves the aforementioned problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel anti-loosening nut, comprising:
[0007] An externally inclined thickened nut, comprising a nut body located at the top and a frustum base block located at the bottom, wherein the nut body and the frustum base block are integrally formed;
[0008] The inner washer of the nut is installed at the bottom of the outer inclined thickened nut. The inner washer of the nut includes a frustum washer and inner washer pins symmetrically fixed on both sides of the frustum washer. The top wall of the frustum washer has two inner washer separation grooves symmetrically formed.
[0009] Preferably, the bottom end of the frustum base block is provided with an inner pad mounting groove that matches the frustum washer, the frustum washer is inserted into the inner pad mounting groove, and the inner wall of the inner pad mounting groove is symmetrically provided with inner pad pin grooves that cooperate with the inner pad pin.
[0010] Preferably, pin groove indicator marks are provided on both sides of the outer wall of the frustum base block corresponding to the position of the inner pad pin groove, and the pin groove indicator marks are upward arrows.
[0011] Preferably, the connecting line of the two inner pad pins is perpendicular to the connecting line of the two inner pad separation grooves.
[0012] Preferably, the inner diameter of the frustum washer is the same as the inner diameter of the nut body, and the thickness of the frustum base block and the nut body are the same.
[0013] Preferably, the bottom end of the inner washer of the nut extends 0.5mm beyond the bottom wall of the inner washer mounting groove and is flush with the bottom wall of the frustum block.
[0014] Beneficial effects
[0015] This utility model provides a novel anti-loosening nut. Compared with the prior art, it has the following advantages:
[0016] This utility model employs a structure in which an inner washer is installed inside the externally inclined thickened nut. This directly assists the threaded connection between the externally inclined thickened nut and the external screw, making the connection between the externally inclined thickened nut and the external screw stable and unaffected by external influences. The connection between the externally inclined thickened nut and the external screw is more secure. At the same time, the overall height of the externally inclined thickened nut is the same as that of a regular nut. The internal cut-off part of the externally inclined thickened nut is horizontally thickened on the outside, making the overall thickness of the nut uniform, balancing the force, making the structure more stable, and simplifying installation. Attached Figure Description
[0017] Figure 1 This is a perspective view of the external structure of this utility model;
[0018] Figure 2 This is a three-dimensional view of the internal structure of the externally inclined thickened nut of this utility model;
[0019] Figure 3 This is a half-sectional perspective view of the externally inclined thickened nut of this utility model;
[0020] Figure 4 This is a three-dimensional view of the external structure of the inner washer of the nut according to this utility model.
[0021] In the figure: 1. Outer beveled thickened nut; 11. Nut body; 12. Frustum base block; 2. Nut inner washer; 21. Frustum washer; 22. Inner washer pin; 3. Inner washer mounting groove; 4. Inner washer pin groove; 5. Inner washer split groove; 6. Pin groove indicator. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example:
[0024] Please see Figure 1-4 A new type of anti-loosening nut, comprising:
[0025] The externally inclined thickened nut 1 includes a nut body 11 located at the upper part and a frustum base block 12 located at the bottom. The nut body 11 and the frustum base block 12 are integrally formed.
[0026] The inner washer 2 is installed at the bottom of the outer inclined thickened nut 1. The inner washer 2 includes a frustum washer 21 and inner washer pins 22 symmetrically fixed on both sides of the frustum washer 21. The top wall of the frustum washer 21 has two inner washer separation grooves 5 symmetrically opened.
[0027] The bottom end of the frustum base block 12 is provided with an inner pad mounting groove 3 that matches the frustum washer 21. The frustum washer 21 is inserted into the inner pad mounting groove 3. The inner wall of the inner pad mounting groove 3 is symmetrically provided with inner pad pin grooves 4 that cooperate with the inner pad pin 22.
[0028] The outer walls of the truncated cone base 12 are provided with pin groove indicator marks 6 on both sides corresponding to the inner pad pin groove 4. The pin groove indicator marks 6 are upward arrows.
[0029] The connecting line of the two inner pad pins 22 is perpendicular to the connecting line of the two inner pad separating grooves 5.
[0030] The inner diameter of the frustum washer 21 is the same as the inner diameter of the nut body 11, and the thickness of the frustum base block 12 is the same as that of the nut body 11.
[0031] The bottom end of the inner washer 2 of the nut extends 0.5mm beyond the bottom wall of the inner washer mounting groove 3 and is flush with the bottom wall of the frustum base block 12.
[0032] In this embodiment, an inner washer 2 is installed inside the outer inclined thickened nut 1 to directly assist the threaded connection between the outer inclined thickened nut 1 and the outer screw, making the connection between the outer inclined thickened nut 1 and the outer screw stable and unaffected by external factors. The connection between the outer inclined thickened nut 1 and the outer screw is more secure. At the same time, the overall height of the outer inclined thickened nut 1 is the same as that of a normal nut. The inner cut-off part of the outer inclined thickened nut 1 is horizontally thickened on the outside (i.e., at the position of the frustum base block 12), so that the overall thickness of the nut is the same, the force is balanced, the structure is more stable, and the installation is simple. When using this device, first align the inner washer pin 22 on the inner washer 2 of the nut with the inner washer pin groove 4 in the inner washer mounting groove 3. The pin groove indicator 6 on the outside of the outer inclined thickened nut 1 allows the operator to easily see the position of the inner washer pin groove 4 from the outside, making it convenient to insert the inner washer 2 of the nut into the inner washer mounting groove 3, while ensuring that the inner washer pin 22 is inserted into the inner washer pin groove 4. When installing the outer inclined thickened nut 1, use a wrench to rotate the outer inclined thickened nut 1 to the root of the screw, until the bottom of the outer inclined thickened nut 1 is in contact with the mounting surface. Continue to rotate the outer inclined thickened nut 1. The external rotational force and the friction of the bottom surface cause the inner washer 2 of the nut to deform around the screw thread. At this time, the inner washer separation groove 5 closes and engages the screw thread. The inner thread of the outer inclined thickened nut 1 and the outer thread of the screw are locked together as the inner washer separation groove 5 closes, thereby achieving the purpose of preventing loosening.
[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A novel anti-loosening nut, characterized in that, include: An externally inclined thickened nut (1) includes a nut body (11) located at the top and a frustum base block (12) located at the bottom. The nut body (11) and the frustum base block (12) are integrally formed. Nut inner washer (2), the nut inner washer (2) is installed at the bottom of the outer inclined thickened nut (1), the nut inner washer (2) includes a frustum washer (21) and inner washer pins (22) symmetrically fixed on both sides of the frustum washer (21), and the top wall of the frustum washer (21) has two inner washer separation grooves (5) symmetrically opened.
2. The novel anti-loosening nut according to claim 1, characterized in that, The bottom end of the frustum base block (12) is provided with an inner pad mounting groove (3) that matches the frustum washer (21). The frustum washer (21) is inserted into the inner pad mounting groove (3). The inner wall of the inner pad mounting groove (3) is symmetrically provided with inner pad pin grooves (4) that cooperate with the inner pad pin (22).
3. A novel anti-loosening nut according to claim 2, characterized in that, The outer walls of the frustum base (12) are provided with pin groove indicator marks (6) corresponding to the inner pad pin groove (4) positions. The pin groove indicator marks (6) are upward arrows.
4. A novel anti-loosening nut according to claim 1, characterized in that, The connecting line of the two inner pad pins (22) is perpendicular to the connecting line of the two inner pad separating grooves (5).
5. A novel anti-loosening nut according to claim 1, characterized in that, The inner diameter of the frustum washer (21) is the same as the inner diameter of the nut body (11), and the thickness of the frustum base block (12) and the nut body (11) is the same.
6. A novel anti-loosening nut according to claim 1, characterized in that, The bottom end of the inner washer (2) of the nut extends 0.5mm beyond the bottom wall of the inner washer mounting groove (3) and is flush with the bottom wall of the frustum base block (12).