Stepped bolt firm in connection
By designing reinforced parts of silicone rubber hexagonal hoods and anti-wear bumps on the step bolts, the problem of bolts being loose due to vibration is solved, and a firmer and safer connection is achieved.
Patent Information
- Application Number
- CN202422405204.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-05
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-10-05
AI Technical Summary
Existing bolts are fixed by threaded connections, which are susceptible to structural vibrations and cause looseness, affecting safe use.
A step bolt including the bolt body and reinforcement components is designed, and a hexagonal hood and anti-wear bump are used for silicone rubber material. The reverse rotation friction of the bolt is restricted through the annularly distributed anti-wear bump, and resists axial motion force through the anti-extrusion rebound action of the limiting member, which combines the elastic force of silicone rubber to provide a cushioning effect.
Effectively suppress bolt looseness, improve connection firmness and safety, and reduce the impact of vibration on bolt connection.
Smart Images
Figure CN223062867U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolt fastening, in particular to a stepped bolt with firm connection. Background Technique
[0002] A bolt is a fastener composed of a bolt head and a screw rod, which needs to be matched with a nut through a threaded connection for fastening and connecting two parts with through holes. For example, a stepped bolt.
[0003] A stepped bolt is a high-strength threaded connector, which is divided into an ordinary stepped bolt and a high-strength stepped bolt. It usually consists of a threaded rod, a nut and a washer. They can connect two objects together and have the ability to prevent loosening and resist stretching. Therefore, stepped bolts are widely used in the fields of industry, construction, aviation, etc.
[0004] The existing bolts can only be fixed through threads. During use, they are easily affected by the vibration of the structure, resulting in loosening of the threaded connection, which poses a great threat to the safe use of the bolts. In view of this, we propose a stepped bolt with firm connection. Content of the Utility Model
[0005] The purpose of the utility model is to provide a stepped bolt with firm connection to solve the problem that the existing bolts can only be fixed through threads. During use, they are easily affected by the vibration of the structure, resulting in loosening of the threaded connection, which poses a great threat to the safe use of the bolts as mentioned in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A stepped bolt with firm connection, including a bolt main body and a reinforcement component. The bolt main body consists of a stepped section, a bolt section and a head section. A hexagonal port is opened on the end face of the head section, and the reinforcement component is movably sleeved on the bolt main body;
[0007] The reinforcement component includes a hexagonal sleeve, which is movably sleeved on the head section. An anti-wear convex block is annularly arranged on the side of the hexagonal sleeve away from the head section. The longitudinal section of the anti-wear convex block is a right trapezoid. A limiting member is arranged inside the hexagonal sleeve, and the longitudinal sections of the anti-wear convex block and the limiting member are both right trapezoids.
[0008] Preferably, the hexagonal sleeve is sleeved on the side of the head section away from the hexagonal port.
[0009] Preferably, the inclination direction of the upper inclined surface of the anti-wear convex block is the same as the thread rotation direction of the bolt section.
[0010] Preferably, the limiting member is annularly arranged, and the limiting member and the anti-wear convex block are arranged in opposite directions.
[0011] Preferably, a hole groove for the insertion of the stepped stage is formed in the middle of the hexagonal ferrule, and the anti-wear bump is arranged outside the hole groove.
[0012] Preferably, the width of the hexagonal ferrule is smaller than the width of the bolt body.
[0013] Preferably, the height of the limiting member is 1 / 3 of the height of the inner cavity of the hexagonal ferrule.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. For this stepped bolt with firm connection, by sleeving a hexagonal ferrule on the bolt body, and arranging an annular limiting member and anti-friction bumps distributed on the end face of the hexagonal ferrule inside the hexagonal ferrule. During the use of the bolt, when the bolt is screwed in, the acting force can make the hexagonal ferrule drive the anti-wear bumps to gradually fit the component to be fastened and fit with the fastening component. Through the annularly distributed anti-wear bumps, the reverse rotation friction of the bolt can be further restricted, playing a role in restraining the radial movement of the bolt, thus making it more convenient for the fastening requirement of the bolt. At the same time, through the anti-extrusion and rebound effect of the limiting member, the axial movement force of the bolt can be resisted, reducing the occurrence probability of bolt loosening. And due to the self-elasticity of its silicone rubber, when the fastening component vibrates, it can play a certain shock-absorbing effect on the bolt connection, further ensuring the firmness of the bolt connection and improving the safety of bolt use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the present utility model;
[0017] Figure 2 is a first perspective schematic diagram of the reinforcement component of the present utility model;
[0018] Figure 3 is a second perspective schematic diagram of the reinforcement component of the present utility model;
[0019] Figure 4 is a semi-sectional structural schematic diagram of the reinforcement component of the present utility model.
[0020] In the figure: 1. Bolt body; 2. Stepped stage; 3. Bolt section; 4. Reinforcement component; 41. Hexagonal ferrule; 42. Anti-wear bump; 43. Limiting member; 5. End section; 6. Hexagonal port. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 creative efforts shall fall within the protection scope of the present utility model.
[0022] Embodiment: Please refer to Figures 1-4 , the present utility model provides a technical solution: a stepped bolt with firm connection, which mainly aims at the problem that the existing bolt can only be fixed by threads, and during use, it is easily affected by the vibration of the structure, resulting in loosening of the threaded connection, which poses a great threat to the safe use of the bolt. The specific solution is as follows: It includes a bolt body 1 and a reinforcement component 4. The bolt body 1 is composed of a stepped section 2, a bolt section 3, and a head section 5. A hexagonal port 6 is opened on the end face of the head section 5. When the bolt is tightened on the component, it can be operated by inserting a hexagonal wrench into the hexagonal port 6. The reinforcement component 4 is movably sleeved on the bolt body 1;
[0023] Please refer to Figure 2 , Figure 3 and Figure 4 , wherein, the reinforcement component 4 includes a hexagonal sleeve 41. The material of the hexagonal sleeve 41 is silicone rubber. The most valuable properties of silicone rubber are elasticity and high-temperature stability. It is arranged between the head section 5 and the component to be fastened. On the one hand, it can avoid the wear of the surface of the component to be fastened caused by the contact friction between the bolt and the component to be fastened when the bolt connection is tightened, and ensure the service life of the component to be fastened; on the other hand, using elastic silicone rubber, during the bolt tightening operation, the reinforcement component 4 will produce a certain amount of compressive deformation; and during the use of the bolt, the silicone rubber will generate a rebound force on the extruded deformation part. Therefore, during use, it can resist the axial movement force of the bolt and reduce the occurrence probability of bolt loosening. And due to the self-elasticity of the silicone rubber, when the fastened component vibrates, it can play a certain shock-absorbing effect on the bolt connection, further ensuring the firmness of the bolt connection.
[0024] Specifically, a hexagonal ferrule 41 is sleeved on one side of the end segment 5 away from the hexagonal port 6. The width of the hexagonal ferrule 41 is smaller than the width of the bolt body 1. The hexagonal ferrule 41 is movably sleeved on the end segment 5. An anti-wear bump 42 is annularly arranged on one side of the hexagonal ferrule 41 away from the end segment 5. The inclination direction of the upper inclined surface of the anti-wear bump 42 is the same as the thread rotation direction of the bolt segment 3. A hole groove for the insertion of the stepped segment 2 is formed in the middle of the hexagonal ferrule 41, and the anti-wear bump 42 is arranged outside the hole groove. The material of the anti-wear bump 42 is the same as that of the hexagonal ferrule 41, and the longitudinal section of the anti-wear bump 42 is in the shape of a right trapezoid. Through the arrangement of the anti-wear bump 42, during the use of the bolt, the acting force of the bolt screwing in can enable the hexagonal ferrule 41 to drive the anti-wear bump 42 to gradually fit the component to be fastened and fit with the fastening component. Through the annularly distributed anti-wear bumps 42, the reverse rotation friction of the bolt can be further restricted, and the radial movement of the bolt can be inhibited, thus making it more convenient for the fastening requirement of the bolt.
[0025] It is particularly worth noting that during the processing of the reinforcement component 4, first, the rubber material is punched into a certain shape, filled into the mold cavity, the mold is closed and placed between the upper and lower plates of the heated flat vulcanizing machine, and heated and pressurized according to the specified process to vulcanize the rubber material, and then the mold can be removed.
[0026] In this embodiment, a limiting member 43 is arranged inside the hexagonal ferrule 41. The material of the limiting member 43 is the same as that of the hexagonal ferrule 41, and the limiting member 43 and the hexagonal ferrule 41 are integrally processed. The height of the limiting member 43 is 1 / 3 of the inner cavity height of the hexagonal ferrule 41. The longitudinal sections of both the anti-wear bump 42 and the limiting member 43 are in the shape of a right trapezoid. The limiting member 43 is annularly arranged, and the limiting member 43 and the anti-wear bump 42 are arranged back to back. During the use of the bolt, the end segment 5 will extrude the limiting member 43. Therefore, during use, through the anti-extrusion and rebound effect of the limiting member 43, the axial movement force of the bolt can be resisted, and the occurrence probability of bolt loosening can be reduced. And due to the self-elasticity of its silicone rubber, when the fastening component vibrates, it can play a certain shock-absorbing effect on the bolt connection, further ensuring the firmness of the bolt connection.
[0027] When the firmly connected stepped bolt is in use, a hexagon wrench is inserted into the inner side of the hexagon port 6, and the bolt body 1 is driven to rotate by the hexagon wrench so that it is screwed into a plurality of components to be fastened, thereby achieving the effect of connecting the components; as the bolt is screwed in, the reinforcing component 4 can be made to fit more closely to the component to be fastened; during this process, the screwing force of the bolt can cause the hexagon ferrule 41 to drive the anti-wear convex block 42 to gradually fit the component to be fastened and fit with the fastening component. Through the annularly distributed anti-wear convex blocks 42, the reverse rotation friction of the bolt can be further restricted, playing a role in inhibiting the radial movement of the bolt; and through the anti-extrusion rebound effect of the limiting member 43, the axial movement force of the bolt can be resisted, reducing the occurrence probability of bolt loosening. Moreover, due to the self-elasticity of its silicone rubber, when the fastening component vibrates, a certain shock-absorbing effect can be achieved at the bolt connection, further ensuring the firmness of the bolt connection.
[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A step bolt with firm connection, comprising a bolt body (1) and a reinforcement component (4), characterized in that: The bolt body (1) is composed of a stepped stage (2), a bolt section (3) and a head section (5). A hexagonal port (6) is provided on the end face of the head section (5). The reinforcing member (4) is movably sleeved on the bolt body (1). The reinforcing member (4) includes a hexagonal sleeve (41). The hexagonal sleeve (41) is movably sleeved on the head section (5). An anti-wear convex block (42) is annularly arranged on one side of the hexagonal sleeve (41) away from the head section (5). The longitudinal section of the anti-wear convex block (42) is in the shape of a right trapezoid. A limiting member (43) is arranged inside the hexagonal sleeve (41). The longitudinal sections of both the anti-wear convex block (42) and the limiting member (43) are in the shape of a right trapezoid.
2. The stepped bolt with firm connection according to claim 1, characterized in that: The hexagonal sleeve (41) is sleeved on the side of the head section (5) away from the hexagonal port (6).
3. A step bolt with firm connection according to claim 1, characterized in that: The inclination direction of the upper inclined surface of the anti-wear convex block (42) is the same as the thread rotation direction of the bolt section (3).
4. A step bolt with firm connection according to claim 1, characterized in that: The limiting member (43) is annularly arranged, and the limiting member (43) and the anti-wear convex block (42) are arranged back to back.
5. The stepped bolt with firm connection according to claim 1, characterized in that: A hole groove for the insertion of the stepped stage (2) is provided in the middle of the hexagonal sleeve (41). The anti-wear convex block (42) is arranged outside the hole groove.
6. A step bolt with firm connection according to claim 1, characterized in that: The width of the hexagonal sleeve (41) is smaller than the width of the bolt body (1).
7. A step bolt with firm connection according to claim 1, characterized in that: The height of the limiting member (43) is 1 / 3 of the inner cavity height of the hexagonal sleeve (41).