Automobile rear axle eccentric adjusting bolt
By designing the eccentric adjustment bolt for the rear axle of a car, and by using threaded means, and by using a washer with embedded threads and an eccentric circle design, the problem of displacement after the bolt is loosened is solved, thus achieving precise adjustment of the wheel angle and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SHUNYI FASTENER CO LTD
- Filing Date
- 2025-08-03
- Publication Date
- 2026-07-14
AI Technical Summary
The existing bolts may shift after the nut is loosened because the bolt axis does not coincide with the axis of the mounting hole, which may affect the stability and safety of the connection.
An eccentric adjustment bolt for a car rear axle has been designed, including a screw, a connecting block, a bolt head, threads, a positioning groove, and a washer. By embedding threads within the threads and setting hexagonal structures and eccentrically designed washers on the connecting block, fine-tuning of the angle can be achieved.
The eccentric structure enables controllable micro-displacement adjustment, precisely adjusting the wheel camber or toe-in, improving the safety and ease of operation of the device, and reducing slippage and localized wear.
Smart Images
Figure CN224497077U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of adjusting bolt technology, specifically to an eccentric adjusting bolt for a car rear axle. Background Technology
[0002] An automobile is a wheeled vehicle driven or towed by a power unit, used to carry people and goods on roads. It is one of the most important means of transportation in modern society. Bolts are commonly used in automobile assembly. A bolt is a mechanical part, a cylindrical threaded fastener fitted with a nut. It is a type of fastener consisting of a head and a threaded shank, which needs to be mated with a nut to fasten two parts with through holes. The nut prevents the bolt from loosening in vibration or impact environments. This type of connection is called a bolted connection. The core part of the bolt is the thread, which is designed based on the helical principle. The thread profile, pitch, diameter, and other parameters determine the bolt's load-bearing capacity and connection strength. Bolts are subjected to various stresses such as tension, shear, and bending during use. Stress analysis and finite element simulation are needed during design to ensure the strength and reliability of the bolts. However, in the use of existing bolts, when the nut is loosened and the eccentric bolt is rotated, displacement may occur because the bolt axis does not coincide with the axis of the mounting hole. Utility Model Content
[0003] The purpose of this utility model is to provide an eccentric adjustment bolt for the rear axle of an automobile, so as to solve the problem mentioned in the background art that when the eccentric bolt is rotated after the nut is loosened, the bolt axis and the mounting hole axis may be displaced.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an eccentric adjustment bolt for a car rear axle, comprising a screw rod, a connecting block fixedly connected to one side surface of the screw rod, and a bolt head connected to the end of the connecting block;
[0005] The screw has a thread embedded in its surface, and a positioning groove is embedded in one side of the screw. A gasket is fitted onto the surface of the connecting block.
[0006] Preferably, one end of the screw is provided with a thread, and the other end of the screw is provided with a smooth plane.
[0007] Using the above technical solution, when the pile body is rotated through the thread, the bolt rotates along the thread.
[0008] Preferably, the connecting block is configured as a hexagonal structure, the gasket has a hexagonal groove inside, and the gasket is sleeved and installed on the outside of the connecting block.
[0009] Using the above technical solution, the gasket is placed between the mounting surface and the bolt head.
[0010] Preferably, the bolt head has a hexagonal structure, and one side of the bolt head is chamfered.
[0011] By adopting the above technical solution, the bolt head is rotated, causing the bolt head to rotate on the screw, which in turn causes the screw to drive the thread to rotate.
[0012] Preferably, the threads and connecting blocks are symmetrically arranged at both ends of the screw, and the positioning groove is arranged at the thread of the screw.
[0013] Using the above technical solution, the thread rotates, causing it to rotate along the internal thread of the mounting surface.
[0014] Preferably, the hexagonal groove of the gasket is disposed on one side of the gasket, and the spacer and the connecting block are designed with an eccentric circle.
[0015] By adopting the above technical solution and changing the relative angle of the wheels through the eccentric circle design of the shim, the camber angle or toe-in can be adjusted.
[0016] Preferably, the spacer and the screw have an eccentric circle design.
[0017] With the above technical solution, the gaskets and screws are staggered, and the gaskets protect the mounting surface of the bolt heads.
[0018] Compared with the prior art, the beneficial effects of this utility model are: the eccentricity adjusting bolt for the rear axle of the automobile:
[0019] 1. With the addition of shims, when the bolts are rotated, the eccentric structure will push the rear axle control arm, wheel hub bracket and other components to make controllable micro-displacements, thereby precisely adjusting the camber angle or toe-in of the wheel, solving the problem that the bolts cannot achieve fine-tuning of the angle and improving the safety of the device.
[0020] 2. The screw and bolt head are designed to be quickly clamped with tools such as wrenches, reducing slippage during operation. The threaded design at one end of the screw can be used with a nut for quick tightening and loosening. At the same time, the washer can distribute the pressure of the bolt head on the mounting surface and avoid localized wear. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a three-dimensional structural diagram of the positioning groove installation of this utility model;
[0023] Figure 3 This is a three-dimensional structural diagram of the gasket installation of this utility model;
[0024] Figure 4 This is a three-dimensional structural diagram of the connecting block installation of this utility model;
[0025] Figure 5 This is a front view structural diagram of the present utility model.
[0026] In the diagram: 10, screw; 20, connecting block; 30, bolt head;
[0027] 40. Thread; 401. Locating groove;
[0028] 50. Gasket. Detailed Implementation
[0029] 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.
[0030] Please see Figure 1-5 This utility model provides a technical solution: an eccentric adjustment bolt for a car rear axle, including a screw 10, a connecting block 20, a bolt head 30, a thread 40, a positioning groove 401, and a washer 50;
[0031] When using this adjusting bolt, it is convenient to make fine adjustments to the angle where the bolt cannot be adjusted. The specific implementation method is as follows:
[0032] A connecting block 20 is fixedly connected to one side surface of the screw 10, and a bolt head 30 is connected to the end of the connecting block 20. The screw 10 has a thread 40 embedded in its surface, and a positioning groove 401 is embedded in one side surface of the screw 10. A washer 50 is fitted onto the surface of the connecting block 20. One end of the screw 10 has a thread 40, and the other end of the screw 10 is a smooth plane. The connecting block 20 has a hexagonal structure. The washer 50 has a hexagonal groove inside and is fitted onto the outside of the connecting block 20. The bolt head 30 has a hexagonal structure, and one side of the bolt head 30 has a chamfered structure. The thread 40 and the connecting block 20 are symmetrically arranged at both ends of the screw 10, and the positioning groove 401 is located at the thread 40 of the screw 10. The hexagonal groove of the washer 50 is located on one side of the washer 50, and the washer 50 and the connecting block 20 are eccentrically arranged. The washer 50 and the screw 10 are also eccentrically designed.
[0033] Place one side of the screw 10 into the hole on the mounting surface, and install a nut on one end of the screw 10. Rotate the nut along the thread 40 to fix the two mounting surfaces between the bolt and the nut. At this time, one side of the washer 50 is in contact with the surface of the mounting surface. Install a wrench on the outside of the bolt head 30 to engage the bolt head 30 with the wrench. Rotate the wrench to rotate the bolt head 30, which in turn rotates the connecting block 20, which in turn rotates the screw 10. The screw 10 rotates inside the hole, and the screw 10 rotates along the thread 40 inside the nut. This allows the outward tilt angle or toe-in of the mounting surface to be changed. At this time, the bolt head 30 rotates the position of the washer 50, which facilitates fine adjustment of the bolt angle.
[0034] Working principle: When using the rear axle eccentric adjustment bolt of this car, a bolt head 30, thread 40, positioning groove 401 and washer 50 are provided to facilitate fine-tuning of the bolt angle where it is not possible, thus increasing the overall practicality.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An eccentric adjustment bolt for a rear axle of an automobile, comprising a screw (10), wherein a connecting block (20) is fixedly connected to one side surface of the screw (10), and a bolt head (30) is connected to the end of the connecting block (20); Its features are: The screw (10) has a thread (40) embedded in its surface, and a positioning groove (401) is embedded in one side surface of the screw (10). A gasket (50) is fitted onto the surface of the connecting block (20).
2. The eccentricity adjusting bolt for a rear axle of an automobile according to claim 1, characterized in that: One end of the screw (10) is provided with a thread (40), and the other end of the screw (10) is provided with a smooth plane.
3. The eccentricity adjusting bolt for a rear axle of an automobile according to claim 1, characterized in that: The connecting block (20) is configured with a hexagonal structure, and the gasket (50) has a hexagonal groove inside, and the gasket (50) is sleeved and installed on the outside of the connecting block (20).
4. The eccentricity adjusting bolt for a rear axle of an automobile according to claim 1, characterized in that: The bolt head (30) has a hexagonal structure, and one side of the bolt head (30) is chamfered.
5. The eccentricity adjusting bolt for a rear axle of an automobile according to claim 1, characterized in that: The thread (40) and the connecting block (20) are symmetrically arranged at both ends of the screw (10), and the positioning groove (401) is arranged at the thread (40) of the screw (10).
6. The eccentricity adjusting bolt for a rear axle of an automobile according to claim 1, characterized in that: The hexagonal groove of the gasket (50) is provided on one side of the gasket (50), and the gasket (50) and the connecting block (20) are designed with an eccentric circle.
7. The eccentricity adjusting bolt for a rear axle of an automobile according to claim 1, characterized in that: The spacer (50) and the screw (10) are designed with an eccentric circle.