Self-locking automobile bolt
By designing self-locking automotive bolts and utilizing components such as self-locking mechanisms and return springs, the problem of bolt loosening under vibration conditions is solved, thereby improving the stability and safety of the connection.
Patent Information
- Application Number
- CN202422885281.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Automobile bolts are prone to loosening under vibration conditions, causing safety hazards.
A self-locking automotive bolt is designed, which includes a bolt body and a self-locking mechanism. The self-locking mechanism prevents small displacements between the bolt and the connecting part and maintains the preload force by using components such as a cylinder, an oblique block, a self-locking part, and a return spring.
It effectively prevents bolts from loosening, improves the safety of automotive parts and ensures connection stability.
Smart Images
Figure CN223330929U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile bolts, in particular to a self-locking automobile bolt. Background Art
[0002] In the automotive processing industry, bolts are one of the most commonly used connectors. Bolts play a great role in automobile assembly, but at the same time, we will also find that the vibration generated during the operation of the car will be transmitted to the bolts. For this reason, the locked auto parts are often regularly inspected and reinforced to prevent the loosening of auto parts due to loose bolts.
[0003] However, in the existing technology, when a car is driving on a rough road, the wheels will constantly bounce up and down and transmit vibrations to various parts of the car body. For ordinary bolts, this vibration will cause the bolts to loosen slightly, because the vibration will cause repeated small displacements between the bolts and the connecting parts, gradually weakening the pre-tightening force generated during the initial tightening, causing the car bolts to loosen, posing a safety hazard. Utility Model Content
[0004] The purpose of the utility model is to solve the problem in the prior art that vibration will cause repeated small displacements between the bolt and the connecting piece, gradually weakening the pre-tightening force generated during the initial tightening, resulting in loosening of the automobile bolt and posing a safety hazard. A self-locking automobile bolt is proposed.
[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a self-locking automobile bolt, comprising a bolt body, a self-locking mechanism is provided at the lower end of the bolt body, the self-locking mechanism comprises a cylinder, a circular groove is provided at the lower end of the bolt body, four groups of guide holes are penetrated through the outer wall of the bolt body, self-locking parts are slidably installed inside the four groups of guide holes, four groups of oblique long blocks are welded to the upper end of the cylinder, and arc-shaped baffles are welded to the upper ends of the four groups of self-locking parts.
[0006] Preferably, the upper ends of the four groups of oblique long blocks are fixedly mounted with return springs, and the outer wall of the cylinder is provided with four groups of limiting grooves.
[0007] Preferably, one side of the four groups of arc-shaped baffles are in contact with the inner wall of the circular groove, and the four groups of oblique long blocks are arranged inside the circular groove.
[0008] Preferably, a portion of the cylinder is disposed inside the circular groove, and the upper inclined ends of the four groups of oblique long blocks are in contact with the lower inclined ends of the self-locking members respectively.
[0009] Preferably, the inner parts of the four groups of limiting grooves are all slidably mounted with limiting plates, and the inner top ends of the upper circular grooves of the reset springs are fixed.
[0010] Preferably, one side of the four groups of limiting plates are all fixed to the inner wall of the circular groove.
[0011] Compared with the prior art, the advantages and positive effects of the present invention are:
[0012] 1. In the present invention, the self-locking mechanism can make the bolt body self-locking, thereby preventing repeated small displacements between the bolt body and the connecting piece, and will not gradually weaken the pre-tightening force generated during the initial tightening, thereby preventing the bolt body from loosening and improving safety.
[0013] 2. In the present invention, a reset spring is provided to allow a portion of the cylinder to be withdrawn from the interior of the circular groove, thereby achieving a reset effect and facilitating subsequent use. Secondly, with the cooperation of the four sets of limit grooves and the four sets of limit plates, a blocking effect can be achieved on the cylinder to prevent the cylinder from being completely moved out of the interior of the circular groove, making it convenient to move the four sets of oblique long blocks to the appropriate position and to block one side of the four sets of self-locking parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 The utility model provides a three-dimensional structural diagram of a self-locking automobile bolt;
[0015] Figure 2 This is a partially cutaway perspective view of a self-locking automobile bolt proposed in the present invention;
[0016] Figure 3 The utility model provides a structural diagram of a self-locking mechanism in a self-locking automobile bolt;
[0017] Figure 4 The utility model provides a partial half-section structural schematic diagram of a self-locking automobile bolt.
[0018] Legend: 1. Bolt body; 2. Self-locking mechanism; 21. Cylinder; 22. Circular groove; 23. Guide hole; 24. Self-locking part; 25. Oblique long block; 26. Return spring; 27. Arc baffle; 28. Limiting groove; 29. Limiting plate. DETAILED DESCRIPTION
[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.
[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0021] Example 1: Figure 1 - Figure 4 As shown, the utility model provides a self-locking automobile bolt, comprising a bolt body 1, a self-locking mechanism 2 is provided at the lower end of the bolt body 1, the self-locking mechanism 2 comprises a cylinder 21, a circular groove 22 is opened at the lower end of the bolt body 1, four groups of guide holes 23 are opened through the outer wall of the bolt body 1, and self-locking parts 24 are slidably installed inside the four groups of guide holes 23, four groups of oblique blocks 25 are welded to the upper end of the cylinder 21, and arc-shaped baffles 27 are welded to the upper ends of the four groups of self-locking parts 24, one side of the four groups of arc-shaped baffles 27 are in contact with the inner wall of the circular groove 22, the four groups of oblique blocks 25 are all arranged inside the circular groove 22, a part of the cylinder 21 is arranged inside the circular groove 22, and the upper inclined ends of the four groups of oblique blocks 25 are respectively in contact with the inclined ends of the lower ends of the self-locking parts 24.
[0022] The following is a detailed description of the specific arrangement and function of this embodiment. When the cylinder 21 is squeezed, the cylinder 21 drives the four groups of oblique long blocks 25 to move upward together inside the circular groove 22. When the four groups of oblique long blocks 25 gradually move upward, the four groups of oblique long blocks 25 will respectively push the four groups of self-locking members 24 to move, so that the four groups of self-locking members 24 are respectively active inside the four groups of guide holes 23, and the four groups of self-locking members 24 will extend outward and closely contact the inner wall of the external connecting member, thereby enabling the bolt body 1 to self-lock, thereby preventing repeated small displacements between the bolt body 1 and the connecting member, and not gradually weakening the pre-tightening force generated during the initial tightening, preventing the bolt body 1 from loosening, and improving safety.
[0023] By welding four groups of arc-shaped baffles 27 on the upper ends of the four groups of self-locking parts 24, when the four groups of self-locking parts 24 slide inside the four groups of guide holes 23, the four groups of self-locking parts 24 will drive the four groups of arc-shaped baffles 27 to move together, and one side of the four groups of arc-shaped baffles 27 will contact the inner wall of the circular groove 22, which can block the four groups of self-locking parts 24 and prevent the four groups of self-locking parts 24 from moving out from the inside of the four groups of guide holes 23.
[0024] Example 2: Figure 2 、 Figure 3 and Figure 4 As shown, the upper ends of the four groups of oblique long blocks 25 are fixedly installed with a return spring 26, the outer wall of the cylinder 21 is provided with four groups of limit grooves 28, and the inner parts of the four groups of limit grooves 28 are all slidably installed with a limit plate 29. The inner top end of the circular groove 22 at the upper end of the return spring 26 is fixed, and one side of the four groups of limit plates 29 is fixed to the inner wall of the circular groove 22.
[0025] The effect achieved by the entire embodiment is that, by providing the return spring 26, when the bolt body 1 is not in use, the return spring 26 pushes the four groups of oblique long blocks 25 to move downward under the elastic force of the return spring 26. At the same time, the four groups of oblique long blocks 25 drive the cylinder 21 to slide together inside the circular groove 22, so that a part of the cylinder 21 is moved out of the circular groove 22, thereby achieving a reset effect and facilitating subsequent use;
[0026] When the cylinder 21 moves downward, the cylinder 21 slides on the outer wall of the four groups of limit plates 29 through the four groups of limit grooves 28. When the upper ends of the four groups of limit plates 29 respectively contact the inner top ends of the four groups of limit grooves 28, they can block the cylinder 21 and prevent the cylinder 21 from completely moving out of the inside of the circular groove 22, making it convenient to move the four groups of oblique blocks 25 to the appropriate position and block one side of the four groups of self-locking parts 24.
[0027] The usage and working principle of this device: First, by screwing the bolt body 1 into the interior of the connecting piece, when the bolt body 1 is completely screwed into the interior of the connecting piece, the cylinder 21 will contact the connecting piece and gradually move inside the circular groove 22. The cylinder 21 will drive the four groups of oblique blocks 25 to move upward together inside the circular groove 22. When the four groups of oblique blocks 25 gradually move upward, the four groups of oblique blocks 25 will respectively push the four groups of self-locking parts 24 to move, so that the four groups of self-locking parts 24 can move inside the four groups of guide holes 23 respectively, and the four groups of self-locking parts 24 will extend outward and closely contact the inner wall of the external connecting piece, thereby making the bolt body 1 self-locking, and preventing repeated small displacements between the bolt body 1 and the connecting piece.
[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.
Claims
1. A self-locking automobile bolt, comprising a bolt body (1), characterized in that: The lower end of the bolt body (1) is provided with a self-locking mechanism (2), and the self-locking mechanism (2) includes a cylinder (21). The lower end of the bolt body (1) is provided with a circular groove (22). The outer wall of the bolt body (1) is provided with four groups of guide holes (23). Self-locking parts (24) are slidably installed inside the four groups of guide holes (23). Four groups of oblique long blocks (25) are welded to the upper end of the cylinder (21), and arc-shaped baffles (27) are welded to the upper ends of the four groups of self-locking parts (24).
2. The self-locking automobile bolt according to claim 1, characterized in that: The upper ends of the four groups of oblique long blocks (25) are fixedly mounted with reset springs (26), and the outer wall of the cylinder (21) is provided with four groups of limiting grooves (28).
3. The self-locking automobile bolt according to claim 1, characterized in that: One side of the four groups of arc-shaped baffles (27) is in contact with the inner wall of the circular groove (22), and the four groups of oblique long blocks (25) are arranged inside the circular groove (22).
4. The self-locking automobile bolt according to claim 3, characterized in that: A portion of the cylinder (21) is arranged inside the circular groove (22), and the upper inclined ends of the four groups of oblique long blocks (25) are respectively in contact with the lower inclined ends of the self-locking member (24).
5. The self-locking automobile bolt according to claim 2, characterized in that: The interiors of the four groups of limiting grooves (28) are all slidably mounted with limiting plates (29), and the inner top ends of the upper circular grooves (22) of the return springs (26) are fixed.
6. The self-locking automobile bolt according to claim 5, characterized in that: One side of the four groups of limiting plates (29) is fixed to the inner wall of the circular groove (22).