Vehicle fastener with anti-loosening function

Abstract

The utility model relates to the technical field of vehicle fasteners, in particular to a vehicle fastener with an anti-loosening function, which comprises a pin column, a fastening driving component is arranged inside and outside the pin column, the fastening driving component comprises a hydraulic cylinder fixedly mounted inside the pin column, and two communicating pipes are fixedly communicated with the outer wall of the bottom end inside the hydraulic cylinder; and a buffer attaching assembly is arranged inside and outside the pin column, the buffer attaching assembly comprises assembling grooves formed in the inside and outside of the pin column and distributed in an equiangular mode, and liquid flowing pipes are embedded in the assembling grooves and communicate with the hydraulic cylinder through communicating pipes. The outer wall of the liquid flowing pipe and the inner wall of a pin hole of a vehicle part can be mutually attached and extruded by increasing the size of the liquid flowing pipe, so that the friction effect between a pin column and the part is improved, and the anti-loosening effect can be achieved through extrusion; under the action of external force, vibration and impact can be better resisted through tighter connection.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle fasteners, in particular to a vehicle fastener with an anti-loosening function. Background Art

[0002] Vehicle fasteners refer to various mechanical elements used to connect and fix automotive components. They create mechanical connections to maintain the position and integrity of components. Common vehicle fasteners include bolts, nuts, screws, studs, washers, pins, rivets, etc. These fasteners have different shapes, sizes, and materials to meet various application requirements in automobile manufacturing.

[0003] A vehicle fastener pin is an elongated cylindrical or conical part, usually used to position and fasten components in a vehicle. The vehicle fastener pin forms a tight mechanical connection through its pin hole and axial pressure to transmit force and bear load, while ensuring the relative position between components is fixed, thus ensuring the normal operation and stability of the vehicle.

[0004] In the prior art solutions, the vehicle fastener pin forms a tight mechanical connection through its pin hole and axial pressure. However, this type of fastening connection is relatively single and cannot effectively reduce the force between the pin hole and the pin during vibration or impact, which will further accelerate the damage of the pin itself and reduce the fastening effect of the pin. Summary of the Invention

[0005] The purpose of the utility model is to provide a vehicle fastener with an anti-loosening function. By increasing the volume of the liquid circulation pipe, the outer wall of the liquid circulation pipe can be mutually attached and extruded with the inner wall of the pin hole of the vehicle component, so as to increase the friction effect between the pin column and the component, and the anti-loosening effect can be achieved through extrusion; when subjected to external forces, a tighter connection can better resist vibration and impact, so as to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A vehicle fastener with an anti-loosening function, including a pin column, and a fastening driving component is jointly arranged inside and outside the pin column. The fastening driving component includes a hydraulic cylinder fixedly installed inside the pin column, and two communicating pipes are fixedly communicated with the outer wall of the bottom end inside the hydraulic cylinder;

[0007] A buffer fitting component is jointly arranged inside and outside the pin column. The buffer fitting component includes assembly grooves opened at equal angles inside and outside the pin column. A liquid circulation pipe is embedded inside the assembly groove. The liquid circulation pipe is distributed in an S shape, and the liquid circulation pipe is mutually communicated with the hydraulic cylinder through the communicating pipe.

[0008] Preferably, a slot is provided at the upper end inside the pin post, and the fastening drive assembly further includes a drive push post slidably installed inside the slot.

[0009] Preferably, a plug body is fixedly installed at the bottom end of the drive push post. The outer wall of the plug body is in close fit with the inner wall of the hydraulic cylinder, and the plug body slides in the hydraulic cylinder through the drive push post.

[0010] Preferably, an anti-loosening assembly is provided both inside and outside the pin post. The anti-loosening assembly includes a first communication cavity opened at the upper end inside the pin post, and a second communication cavity opened at the lower end inside the pin post.

[0011] Preferably, the anti-loosening assembly further includes a first communication pipe fixedly installed at the upper end inside the pin post and communicating with the liquid circulation pipe, and a second communication pipe fixed at the lower end inside the pin post and communicating with the liquid circulation pipe.

[0012] Preferably, a first fitting plug body is slidably installed at one end of the first communication cavity away from the first communication pipe, and a second fitting plug body is slidably installed at one end of the second communication cavity away from the second communication pipe.

[0013] Preferably, the size of the assembly groove exposed on the end face of the pin post is smaller than the size of the liquid circulation pipe, and the volume of the liquid in the liquid circulation pipe bulges out of the outer end face of the pin post after being filled.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By increasing the volume of the liquid circulation pipe, the outer wall of the liquid circulation pipe can be mutually attached and extruded with the inner wall of the pin hole of the vehicle parts, so as to increase the friction effect between the pin post and the parts, and the anti-loosening effect can be achieved through extrusion. The liquid circulation pipe can tightly fill the tiny gap between the pin and the pin hole through its own expansion, making the connection more tight, reducing the shaking or loosening phenomenon caused by too large a gap. When subjected to external forces, a tighter connection can better resist vibration and impact. And the elastic characteristics of the liquid circulation pipe help to disperse the stress acting on the connection point and avoid damage caused by stress concentration.

[0016] 2. Through two groups of symmetrically arranged first fitting plug bodies and second fitting plug bodies, a multi-directional and multi-point fixing effect can be formed between the pin and the pin hole. The multi-directional and multi-point fixing can better resist external vibration and impact, ensuring that the mechanical parts still maintain a stable connection state under complex working conditions. The multi-point fixing reduces the risk of loosening caused by uneven single-point stress or wear, improving the reliability of the connection. The multi-directional fixing can disperse the force to multiple points, avoiding the risk of damage caused by excessive single-point stress. The stable connection and enhanced bearing capacity help to reduce the risk of safety accidents caused by connection failure. Brief Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is the overall structure view of the present invention;

[0019] Figure 2 It is the schematic diagram of the internal structure of the pin of the present invention;

[0020] Figure 3 It is the schematic diagram of the distribution structure of the liquid circulation pipe of the present invention;

[0021] Figure 4 It is the schematic diagram of the connection structure between the fastening drive assembly and the buffer fitting assembly of the present invention;

[0022] Figure 5 For the present invention Figure 4 The partial enlarged structure schematic diagram at position A in;

[0023] Figure 6 It is the schematic diagram of the end face structure of the pin of the present invention.

[0024] Explanation of the reference numerals in the drawings:

[0025] 1. Pin; 2. Fastening drive assembly; 201. Driving push rod; 202. Hydraulic cylinder; 203. Plug body; 204. Connecting pipe; 3. Buffer fitting assembly; 301. Liquid circulation pipe; 302. Assembly groove; 4. Anti-loosening assembly; 401. First connecting pipe; 402. First fitting plug body; 403. Second connecting pipe; 404. Second fitting plug body; 405. First connecting cavity; 406. Second connecting cavity; 5. Slot hole. Specific Embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] The present invention provides a technical solution:

[0028] Please refer toFigures 1 to 4 , a vehicle fastener with an anti-loosening function, including a pin column 1. A fastening drive assembly 2 is provided both inside and outside the pin column 1. The fastening drive assembly 2 includes a hydraulic cylinder 202 fixedly installed inside the pin column 1. Two connecting pipes 204 are fixedly communicated with the bottom outer wall inside the hydraulic cylinder 202; A buffer fitting assembly 3 is provided both inside and outside the pin column 1. The buffer fitting assembly 3 includes assembly grooves 302 equally angularly distributed inside and outside the pin column 1. A liquid circulation pipe 301 is embedded inside the assembly groove 302. The liquid circulation pipe 301 is distributed in an S shape. The liquid circulation pipe 301 is communicated with the hydraulic cylinder 202 through the connecting pipe 204. The size of the assembly groove 302 exposed on the end face of the pin column 1 is smaller than the size of the liquid circulation pipe 301. The volume of the liquid circulation pipe 301 after being filled with liquid protrudes from the outer end face of the pin column 1.

[0029] A slot hole 5 is opened at the upper end inside the pin column 1. The fastening drive assembly 2 further includes a drive push rod 201 slidably installed inside the slot hole 5. A plug body 203 is fixedly installed at the bottom end of the drive push rod 201. The outer wall of the plug body 203 is closely attached to the inner wall of the hydraulic cylinder 202. The plug body 203 slides in the hydraulic cylinder 202 through the drive push rod 201.

[0030] By adopting the above technical solution, during use, the pin column 1 is inserted into the pin hole of the vehicle spare parts. Through the connection extrusion between the pin hole and the pin column 1, the self-gravity of the vehicle components can squeeze and compress the drive push rod 201, so that the drive push rod 201 can contract through the slot hole 5, and then the plug body 203 can be compressed. Through the sliding compression of the plug body 203, the liquid in the hydraulic cylinder 202 can be squeezed out. The liquid in the hydraulic cylinder 202 can enter the liquid circulation pipe 301 through the connecting pipe 204. With the increase of the liquid in the liquid circulation pipe 301, the liquid circulation pipe 301 itself can expand, so that the liquid circulation pipe 301 can expand and extend from the assembly groove 302. Through the increase in the volume of the liquid circulation pipe 301, the outer wall of the liquid circulation pipe 301 can be mutually attached and squeezed with the inner wall of the pin hole of the vehicle components, so as to increase the friction effect between the pin column 1 and the components, and the anti-loosening effect can be achieved through extrusion. The liquid circulation pipe 301 can tightly fill the tiny gap between the pin and the pin hole through its own expansion, making the connection more tight, reducing the shaking or loosening phenomenon caused by too large a gap. The tight connection helps to improve the positioning accuracy between the pin and the pin hole, ensuring that the mechanical components can maintain an accurate relative position during movement. The expansion filling of the liquid circulation pipe 301 also increases the contact area and friction force between the pin and the pin hole, thereby improving the load-bearing capacity of the connection. When subjected to external forces, a tighter connection can better resist vibration and impact. And the elastic characteristics of the liquid circulation pipe 301 help to disperse the stress acting on the connection point, avoiding damage caused by stress concentration.

[0031] Specifically, as Figures 1 to 6 shown, an anti-loosening component 4 is provided both inside and outside the pin post 1. The anti-loosening component 4 includes a first communication cavity 405 opened at the upper end inside the pin post 1, and a second communication cavity 406 opened at the lower end inside the pin post 1. The anti-loosening component 4 further includes a first communication pipe 401 fixedly installed at the upper end inside the pin post 1 and communicating with the liquid circulation pipe 301, and a second communication pipe 403 fixedly installed at the lower end inside the pin post 1 and communicating with the liquid circulation pipe 301. A first fitting plug body 402 is slidably installed at one end of the first communication cavity 405 away from the first communication pipe 401, and a second fitting plug body 404 is slidably installed at one end of the second communication cavity 406 away from the second communication pipe 403.

[0032] By adopting the above technical solution, through the continuous extrusion and pumping of the liquid in the fastening drive component 2, the liquid in the liquid circulation pipe 301 can be continuously increased. In this way, the liquid in the liquid circulation pipe 301 can flow into the first communication cavity 405 and the second communication cavity 406 through the first communication pipe 401 and the second communication pipe 403 respectively. By increasing the liquid volume in the first communication cavity 405 and the second communication cavity 406, the first fitting plug body 402 and the second fitting plug body 404 can be squeezed and pushed, so that the protruding first fitting plug body 402 and the second fitting plug body 404 can squeeze and fix the inner wall of the pin hole of the vehicle parts. In this way, the fastening effect of the connection between the pin and the pin hole can be further improved, and the anti-loosening effect can be improved. Moreover, through the two groups of symmetrically arranged first fitting plug bodies 402 and second fitting plug bodies 404, a multi-directional and multi-point fixing effect can be formed between the pin and the pin hole. The multi-directional and multi-point fixing can better resist external vibration and impact, ensuring that the mechanical components still maintain a stable connection state under complex working conditions. The multi-point fixing reduces the risk of loosening caused by uneven single-point force or wear, improving the reliability of the connection. The multi-directional fixing can disperse the force to multiple points, avoiding the risk of damage caused by excessive single-point force. The stable connection and enhanced bearing capacity help to reduce the risk of safety accidents caused by connection failure.

[0033] Working principle: When in use, insert the pin post 1 into the pin hole of the vehicle spare part. Through the connection extrusion between the pin hole and the pin post 1, the self-gravity of the vehicle part can squeeze and compress the driving jack post 201, so that the driving jack post 201 can contract through the slot hole 5, and then compress the plug body 203. Through the sliding compression of the plug body 203, the liquid in the hydraulic cylinder 202 can be squeezed out. The liquid in the hydraulic cylinder 202 can enter the liquid circulation pipe 301 through the connecting pipe 204. With the increase of the liquid in the liquid circulation pipe 301, the liquid circulation pipe 301 itself can expand, so that the liquid circulation pipe 301 can expand and extend from the assembly groove 302. With the increase of the volume of the liquid circulation pipe 301, the outer wall of the liquid circulation pipe 301 can be mutually attached and squeezed with the inner wall of the pin hole of the vehicle part, so as to increase the friction effect between the pin post 1 and the part; through the continuous extrusion and pumping of the liquid in the fastening driving assembly 2, the liquid in the liquid circulation pipe 301 can continue to increase, so that the liquid in the liquid circulation pipe 301 can flow into the first communication cavity 405 and the second communication cavity 406 respectively through the first communication pipe 401 and the second communication pipe 403. With the increase of the liquid volume in the first communication cavity 405 and the second communication cavity 406, the first fitting plug body 402 and the second fitting plug body 404 can be squeezed and pushed, so that the extended first fitting plug body 402 and the second fitting plug body 404 can squeeze and fix the inner wall of the pin hole of the vehicle part, so as to further improve the fastening effect of the connection between the pin and the pin hole and improve the anti-loosening effect.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle fastener with an anti-loosening function, comprising a pin (1), characterized in that: The inside and outside of the pin column (1) are jointly provided with a fastening drive assembly (2), the fastening drive assembly (2) comprising a hydraulic cylinder (202) fixedly mounted inside the pin column (1), and two connecting pipes (204) fixedly connected on the outer wall of the bottom end inside the hydraulic cylinder (202); The inside and outside of the pin (1) are provided with a buffer fitting assembly (3), the buffer fitting assembly (3) comprising assembly grooves (302) arranged at equal angles inside and outside the pin (1), a liquid circulation tube (301) being embedded inside the assembly groove (302), the liquid circulation tube (301) being distributed in an S shape, and the liquid circulation tube (301) being connected to the hydraulic cylinder (202) via a connecting tube (204).

2. The vehicle fastener with anti-loosening function according to claim 1, characterized in that: A slot hole (5) is formed at the inner upper end of the pin column (1), and the fastening drive assembly (2) further comprises a drive top column (201) slidably mounted inside the slot hole (5).

3. The vehicle fastener with anti-loosening function according to claim 2, characterized in that: A plug body (203) is fixedly mounted on the bottom end of the driving top column (201); the outer wall of the plug body (203) is tightly fitted to the inner wall of the hydraulic cylinder (202); and the plug body (203) slides in the hydraulic cylinder (202) via the driving top column (201).

4. The vehicle fastener with anti-loosening function according to claim 1, characterized in that: An anti-loosening assembly (4) is provided on both the inside and outside of the pin (1), and the anti-loosening assembly (4) comprises a first communicating cavity (405) provided at the upper end of the interior of the pin (1), and a second communicating cavity (406) provided at the lower end of the interior of the pin (1).

5. The vehicle fastener with anti-loosening function according to claim 4, characterized in that: The anti-loosening assembly (4) further comprises a first connecting tube (401) fixedly mounted on the upper end of the pin column (1) and interconnected with the liquid circulation tube (301), and a second connecting tube (403) fixedly mounted on the lower end of the pin column (1) and interconnected with the liquid circulation tube (301).

6. The vehicle fastener with anti-loosening function according to claim 5, characterized in that: A first fitting plug body (402) is slidably mounted on one end of the first connecting cavity (405) away from the first connecting tube (401), and a second fitting plug body (404) is slidably mounted on one end of the second connecting cavity (406) away from the second connecting tube (403).

7. The vehicle fastener with anti-loosening function according to claim 1, characterized in that: The size of the exposed assembly groove (302) on the end face of the pin (1) is smaller than the size of the liquid circulation tube (301), and the volume of the liquid circulation tube (301) after being filled with liquid protrudes from the outer end face of the pin (1).

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