Anti-loosening buffering hexagon bolt
By designing a rack and pinion meshing structure and rubber gasket buffer in the hexagonal bolt, the problems of easy loosening and lack of buffering of existing hexagonal bolts under strong external forces are solved, achieving the effect of stable connection and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHONGLI BOLT MFG CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-05
AI Technical Summary
Existing anti-loosening buffer hexagonal bolts are prone to loosening and slipping under strong external forces, have a low coefficient of friction, and lack an effective buffer structure, leading to equipment failure, safety hazards, and shortened service life.
The threaded rod is designed to mesh with the bottom rack of the screw head and the top rack of the washer to increase friction; the rubber washer on the top of the nut provides cushioning, a protective shell is provided on the outside of the screw head, and an anti-slip plate is provided on the outside of the nut.
It effectively prevents bolts from loosening, extends service life, reduces the risk of equipment failure, and improves connection stability and safety.
Smart Images
Figure CN224200946U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hexagonal bolt technology, and in particular to an anti-loosening buffer hexagonal bolt. Background Technology
[0002] In industrial production and machinery assembly, anti-loosening buffer hex bolts serve as critical connecting components, playing a vital role in stabilizing parts and ensuring the normal operation of equipment. With the continuous development of industrial technology, the requirements for the anti-loosening and buffering performance of hex bolts are also increasing. While existing anti-loosening buffer hex bolts meet some of these requirements to a certain extent, there is still room for further improvement in their performance.
[0003] Existing anti-loosening hexagonal bolts typically consist of a bolt head, a threaded shank, and a matching nut and washer. The bolt head is hexagonal, facilitating installation and removal using tools such as wrenches; the threaded shank engages with the nut for tightening. The washer is generally placed between the bolt head and the connected parts to increase the contact area and distribute pressure. Some anti-loosening hexagonal bolts also employ special thread designs or add anti-loosening adhesive to enhance their anti-loosening effect.
[0004] However, existing anti-loosening buffer hexagonal bolts still have significant shortcomings. On the one hand, the coefficient of friction between the hexagonal bolt and the washer is relatively low. During equipment operation, when subjected to strong external forces, the bolt is prone to loosening or even slipping, seriously affecting the fixing effect of items and potentially leading to equipment failure or safety accidents. On the other hand, when the bolt is subjected to a strong impact, due to the lack of an effective buffer structure, the impact force acts directly on the bolt, easily causing bolt damage, shortening its service life, increasing equipment maintenance costs, and creating safety hazards. Therefore, an anti-loosening buffer hexagonal bolt is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an anti-loosening buffer hexagonal bolt, which aims to improve the problems of low friction between the bolt and the washer in the prior art, easy loosening and slippage under strong external force, resulting in failure to fix the item, lack of buffer structure when encountering strong impact, easy damage to key parts of the bolt, shortened service life, increased maintenance costs and safety risks.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A type of anti-loosening buffer hexagonal bolt includes a threaded rod, a screw head fixedly connected to the top of the threaded rod, a washer provided at the bottom of the screw head, a plurality of racks I provided at the bottom of the screw head, and a plurality of racks II provided at the top of the washer, wherein the racks I and the racks II mesh.
[0008] As a further description of the above technical solution:
[0009] The threaded rod is threaded with a nut on the outside, and a rubber gasket is provided on the top of the nut;
[0010] As a further description of the above technical solution:
[0011] The diameter of the rubber gasket is larger than the diameter of the screw head;
[0012] As a further description of the above technical solution:
[0013] The screw head has an internal hexagonal groove on its inner wall, and the internal hexagonal groove has a cross groove on its inner wall.
[0014] As a further description of the above technical solution:
[0015] The rubber gasket abuts against the gasket;
[0016] As a further description of the above technical solution:
[0017] The screw head is fitted with a protective shell on the outside;
[0018] As a further description of the above technical solution:
[0019] The diameter of the washer is larger than the diameter of the screw head;
[0020] As a further description of the above technical solution:
[0021] An anti-slip plate is fixedly connected to the outside of the nut.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the bolt is mainly composed of a threaded rod and a screw head. The bottom rack of the screw head and the top rack of the washer mesh with each other. During installation, the washer is put into the bolt and then tightened with the nut, which greatly increases the contact area between the two parts, thereby increasing the friction between the two contacting objects. This effectively prevents the bolt from loosening, ensures a stable connection of the objects, reduces the risk caused by loosening, and ensures the safe and reliable operation of the equipment.
[0024] 2. In this utility model, the rubber washer at the top of the nut has a buffering effect when the bolt is subjected to strong impact, reducing the risk of threaded rod breakage, reducing the risk of equipment failure, ensuring the safety and stability of the connection structure, and extending the service life of the bolt and reducing maintenance costs. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of an anti-loosening buffer hexagonal bolt proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the screw head of an anti-loosening buffer hexagonal bolt proposed in this utility model;
[0027] Figure 3 This is a schematic diagram of the structure of a gasket for an anti-loosening buffer hexagonal bolt proposed in this utility model.
[0028] Legend:
[0029] 1. Protective shell; 2. Rubber gasket; 3. Threaded rod; 4. Nut; 5. Screw head; 6. Washer; 7. Anti-slip plate; 8. Rack one; 9. Rack two. Detailed Implementation
[0030] 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.
[0031] Reference Figures 1-3 This utility model provides an embodiment of an anti-loosening buffer hexagonal bolt, comprising a threaded rod 3, a screw head 5 fixedly connected to the top of the threaded rod 3, a washer 6 provided at the bottom of the screw head 5, multiple toothed racks 8 at the bottom of the screw head 5, and multiple toothed racks 9 at the top of the washer 6. The toothed racks 8 and 9 mesh with each other. The threaded rod 3 and the screw head 5 form the main structure of the bolt. During bolt installation, the washer 6 needs to be inserted into the bolt first, and then the nut 4 is connected into the threaded rod 3. At the same time, the washer 6 also has multiple toothed racks 9 at the top. When the upper and lower racks are fully engaged, the bolt and the washer 6 are more firmly fixed, preventing them from loosening. The meshing of the toothed racks 8 at the bottom of the screw head 5 and the toothed racks 9 at the top of the washer 6 achieves the fixation between the washer 6 and the bolt, making the connection between the two objects more secure and reducing unnecessary risks.
[0032] Reference Figure 1 and Figure 2 The threaded rod 3 is connected to a nut 4 on the outside. A rubber washer 2 is provided on the top of the nut 4. When the bolt is subjected to a strong impact, the rubber washer 2 on the nut 4 can play a certain buffering role to prevent the strong impact from causing the threaded rod 3 to break, thus causing greater danger.
[0033] Reference Figures 1-3The diameter of the rubber gasket 2 is larger than that of the screw head 5. The larger area of the rubber gasket can provide more space for elastic deformation. When the bolt is subjected to vibration and impact, the energy is absorbed by the compression and rebound of the rubber, reducing the direct impact force on the bolt and the connected parts, and reducing the risk of bolt damage.
[0034] Reference Figure 2 The screw head 5 has an internal hexagonal groove on its inner wall, and a cross groove on its inner wall. The hexagonal groove on the top of the screw head 5 can be used with a hex wrench, while the cross groove on the bottom side of the screw head 5 can be used with a Phillips head screwdriver, making it suitable for multiple usage scenarios.
[0035] Reference Figure 1 and Figure 2 The rubber gasket 2 abuts against the gasket 6. The rubber gasket 2 on the nut 4 plays a buffering role. When the screw head 5 is subjected to a strong impact, the elasticity of the rubber gasket 2 can buffer part of the force, thereby reducing the pressure on the threaded rod 3 and the gasket 6 and preventing them from breaking.
[0036] Reference Figure 1 The screw head 5 is covered with a protective shell 1. With prolonged use, external factors will continuously corrode the bolt, causing it to rust. The protective shell 1 can mitigate the impact of external factors on the screw head 5 to a certain extent.
[0037] Reference Figures 1-3 The diameter of the washer 6 is larger than the diameter of the screw head 5. The portion of the washer 6 that extends beyond the edge of the screw head 5 can evenly transmit the bolt tightening force to the surface of the connected parts, avoiding local indentations, deformation or damage caused by direct compression from the screw head 5.
[0038] Reference Figure 1 and Figure 2 The nut 4 is fixedly connected to the outside of the anti-slip plate 7. The anti-slip plate 7 on the nut 4 can increase the contact area with the user's fingers and prevent the user's hand from slipping while tightening the nut 4.
[0039] Working Principle: Upon initial use, the operator removes the protective shell 1 from the top of the screw head 5, then inserts the washer 6 onto the bolt, aligning the rack 2 9 on top of the washer 6 with the rack 1 8 at the bottom of the screw head 5. Subsequently, the nut 4 is smoothly connected to the threaded rod 3 and gradually tightened. As the nut 4 is tightened, continuous pressure is generated between the screw head 5 and the washer 6, causing the rack 1 8 and rack 2 9 to fully engage. This full engagement significantly increases the contact area between the screw head 5 and the washer 6, and also significantly enhances the friction between them. Once the upper and lower racks are fully engaged, the bolt and washer 6 are securely connected, preventing loosening under strong impact and ensuring a durable and reliable fixation. Furthermore, the rubber washer 2 on the nut 4 plays a crucial role when the bolt is subjected to strong impact. With its excellent elasticity and flexibility, the rubber gasket 2 can deform rapidly upon impact, converting the powerful impact force into its own elastic potential energy, thereby effectively buffering the impact force and preventing the impact force from acting directly on the threaded rod 3. This greatly reduces the possibility of the threaded rod 3 breaking due to strong impact, not only ensuring the integrity of the bolt structure, but also effectively avoiding safety hazards caused by bolt damage, and significantly improving the reliability and service life of the bolt under complex working conditions.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A type of anti-loosening buffer hexagonal bolt, comprising a threaded rod (3), characterized in that: The top of the threaded rod (3) is fixedly connected to a screw head (5), a washer (6) is provided at the bottom of the screw head (5), a plurality of racks (8) are provided at the bottom of the screw head (5), a plurality of racks (9) are provided at the top of the washer (6), and the racks (8) mesh with the racks (9).
2. The anti-loosening buffer hexagonal bolt according to claim 1, characterized in that: The threaded rod (3) is threaded with a nut (4) on the outside, and a rubber gasket (2) is provided on the top of the nut (4).
3. The anti-loosening buffer hexagonal bolt according to claim 2, characterized in that: The diameter of the rubber gasket (2) is larger than the diameter of the screw head (5).
4. The anti-loosening buffer hexagonal bolt according to claim 1, characterized in that: The screw head (5) has an internal hexagonal groove on its inner wall, and a cross groove is formed on the inner wall of the internal hexagonal groove.
5. The anti-loosening buffer hexagonal bolt according to claim 2, characterized in that: The rubber gasket (2) abuts against the gasket (6).
6. The anti-loosening buffer hexagonal bolt according to claim 1, characterized in that: The screw head (5) is fitted with a protective shell (1) on the outside.
7. The anti-loosening buffer hexagonal bolt according to claim 1, characterized in that: The diameter of the washer (6) is larger than the diameter of the screw head (5).
8. The anti-loosening buffer hexagonal bolt according to claim 2, characterized in that: An anti-slip plate (7) is fixedly connected to the outside of the nut (4).