Anti-loosening nut mechanism
By designing an anti-loosening nut mechanism, the combination of anti-loosening holes, threaded holes, compression springs and anti-loosening pins is solved, and the effective anti-loosening and disassembly effect is achieved under impact, vibration and variable load conditions is achieved.
Patent Information
- Application Number
- CN202422026076.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The reliability of existing nuts is reduced in dynamic loads, and common anti-loosening measures are prone to loosening under impact, vibration and variable loads, and are inconvenient to disassemble or cause irreversible damage.
An anti-loosening nut mechanism is designed, including a connector, a connected part, a nut and a bolt. The nut is equipped with anti-loosening holes and threaded holes. It is combined with a compression spring and an anti-loosening pin to achieve the locking and loosening of the nut by assisting the installation of the screws.
This design effectively prevents the nut from loosening under impact, vibration and variable load conditions, and the nuts and nuts can be replaced with the same type of nuts after deformation, making it easy to disassemble.
Smart Images
Figure CN222977212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of preventing nut loosening, and specifically relates to an anti-loosening nut mechanism. Background Technique
[0002] As a common mechanical component, the nut is widely used in various mechanical equipment, and its working principle is to use the friction between the nut and the bolt for self-locking. However, the reliability of this self-locking will be reduced under dynamic loads. To prevent the nut from loosening, we often take some anti-loosening measures in some special occasions to ensure the reliability of the nut locking. Using a locking nut is one of the anti-loosening measures. At present, the common anti-loosening methods are: Friction anti-loosening: including spring washer anti-loosening, opposed nut anti-loosening, self-locking nut anti-loosening, elastic ring nut anti-loosening, etc.; This anti-loosening method is relatively convenient for the disassembly of the nut, but it is easy to loosen and the thread connection fails under impact, vibration and variable loads. Mechanical anti-loosening: including grooved nut and split pin nut anti-loosening, round nut anti-loosening, stop washer anti-loosening, series wire anti-loosening, etc.; This method makes disassembly inconvenient. Riveting and punching anti-loosening: including edge punching method anti-loosening, bonding anti-loosening, etc.; The disadvantage of this method is that the screw can only be used once and the disassembly is very difficult, and the bolt pair must be damaged to disassemble. Structural anti-loosening: the self-structure of the thread pair for anti-loosening. This method can be disassembled repeatedly and has good anti-loosening performance, but it has special requirements and is difficult to process. Summary of the Invention
[0003] The purpose of the utility model is to provide an anti-loosening nut mechanism to solve the problems existing in the above background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solution: an anti-loosening nut mechanism, including a connecting member 1, a connected member 2, a nut 3 and a bolt 4. The connected member 2 is arranged above the connecting member 1, the bolt 4 passes through the connected member 2 and the connecting member 1, and the nut 3 is arranged above the connected member 2; The characteristics are that: the nut 3 is provided with an anti-loosening hole 7, and a threaded hole 6 and an assisting installation screw 5 are arranged above the anti-loosening hole 7; A counterbore 10 is arranged on the connected member 2, and a compression spring 9 and an anti-loosening pin 8 are arranged in the counterbore 10 from bottom to top.
[0005] Preferably, the top end of the anti-loosening pin 8 is a spherical head, and the total height of the compression spring 9 and the lower anti-loosening pin 8 in the relaxed state is greater than the depth of the counterbore 10.
[0006] Preferably, the effective threaded depth of the assisting installation screw 5 is equal to the thickness of the nut 3.
[0007] Preferably, a stop block 11 is arranged on one side of the bolt 4 below the connecting member 1.
[0008] Preferably, a rubber layer is arranged at the bottom of the nut 3.
[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: First, it is applied to various anti-loosening places of fasteners, facilitating the operation of maintenance personnel; second, after the nut thread is deformed, the interchange of the same type of nuts can be realized, and the disassembly is convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic structural diagram of the present utility model.
[0011] In the figure: 1, connecting piece; 2, connected piece; 3, nut; 4, bolt; 5, assisting installation screw; 6, threaded hole; 7, anti-loosening hole; 8, anti-loosening pin; 9, compression spring; 10, counterbore; 11, stop block. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0012] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0013] Please refer to Figure 1 , the present utility model provides a technical solution: an anti-loosening nut mechanism, including a connecting piece 1, a connected piece 2, a nut 3 and a bolt 4. The connected piece 2 is arranged above the connecting piece 1, the bolt 4 passes through the connected piece 2 and the connecting piece 1, and the nut 3 is arranged above the connected piece 2.
[0014] The nut 3 is provided with an anti-loosening hole 7, and a threaded hole 6 and an assisting installation screw 5 are arranged above the anti-loosening hole 7; at the same time, the connected piece 2 is provided with a counterbore 10, and a compression spring 9 and an anti-loosening pin 8 are arranged in the counterbore 10 from bottom to top.
[0015] The top end of the anti-loosening pin 8 is a ball head, and the total height of the compression spring 9 and the lower anti-loosening pin 8 in the relaxed state is greater than the depth of the counterbore 10; the effective threaded depth of the assisting installation screw 5 is equal to the thickness of the nut 3, and a rubber layer is arranged at the bottom of the nut 3, so that after the nut 3 is in place, it is ensured that it can continue to be screwed and is anti-slip; a stop block 11 is arranged on one side of the bolt 4 below the connecting piece 1 to prevent the bolt 4 from loosening.
[0016] The specific working principle is as follows:
[0017] During installation, screw in all the limited threads of the assisting installation screw 5 into the nut 3, that is, make the bottom of the assisting installation screw 5 flush with the bottom of the nut 3 to fill the anti-loosening hole 7. At this time, rotate the nut 3 to lock the connected part 2 and the connected part 1. Then loosen the assisting installation screw 5 and continue to tighten the nut 3 so that the anti-loosening pin 8 falls into the anti-loosening hole 7. When the anti-loosening pin 8 enters the anti-loosening hole 7, the limiting nut 3 will no longer rotate. If it is necessary to loosen the nut 3, screw in all the limited threads of the assisting installation screw 5 into the nut 3, push the anti-loosening pin 8 into the counterbore 10, and then loosen the nut 3.
[0018] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-loosening nut mechanism, comprising a connecting member (1), a connected member (2), a nut (3) and a bolt (4), wherein the connected member (2) is arranged above the connecting member (1), the bolt (4) penetrates the connected member (2) and the connecting member (1), and the nut (3) is arranged above the connected member (2); characterized in that: The nut (3) is provided with an anti-loosening hole (7), and a threaded hole (6) and an auxiliary installation screw (5) are provided above the anti-loosening hole (7); the connected member (2) is provided with a countersunk hole (10), and a compression spring (9) and an anti-loosening pin (8) are provided in the countersunk hole (10) from bottom to top.
2. The anti-loosening nut mechanism according to claim 1, characterized in that: The top end of the anti-loosening pin (8) is a ball head, and the total height of the compression spring (9) and the lower anti-loosening pin (8) in a relaxed state is greater than the depth of the countersunk hole (10).
3. The anti-loosening nut mechanism according to claim 1, characterized in that: The effective thread depth of the assisting installation screw (5) is equal to the thickness of the nut (3).
4. The anti-loosening nut mechanism according to claim 1, characterized in that: A stopper (11) is provided below the connecting piece (1) and on one side of the bolt (4).
5. The anti-loosening nut mechanism according to claim 1, characterized in that: The bottom of the nut (3) is provided with a rubber layer.