Eccentric bolt and vehicle-based eccentric bolt adjusting method

Abstract

The embodiment of the invention provides an eccentric bolt and an eccentric bolt adjusting method based on a vehicle. The eccentric bolt comprises a bolt body, a positioning block and an eccentric clamping groove limiting block; a plurality of limiting clamping grooves are formed in a first target surface of the eccentric clamping groove limiting block, the limiting clamping grooves are arranged at intervals in the circumferential direction of the first target surface, and the limiting clamping grooves extend in the radial direction; a positioning key matched with the limiting clamping groove is arranged on a second target surface of the positioning block; and the bolt body is connected with the positioning block. The eccentric bolt is provided with the limiting clamping grooves with multiple angles, so that the connecting angle between the positioning block and the eccentric clamping groove limiting block can be changed, the rotating angle of the bolt body is further changed, and the angle of the eccentric bolt is flexibly and efficiently adjusted.

Description

Technical Field

[0001] This application relates to the automotive field, and more particularly to an eccentric bolt and a method for adjusting the eccentric bolt based on a vehicle. Background Technology

[0002] With the development of the automotive industry, double wishbone front suspension has been widely used in various vehicle models due to its excellent handling stability and comfort, enabling precise control of wheel trajectory. Among these parameters, wheel camber angle, as a key four-wheel alignment parameter, directly affects vehicle stability, tire wear, and tendency to pull to one side. In actual production, bolts with an eccentric structure are typically used to adjust the relative position between the lower control arm and the subframe, thereby adjusting the camber angle.

[0003] Currently, the angle compensation of eccentric bolts relies heavily on the precision of parts manufacturing or manual rework after online inspection. This method is costly, slow to respond, and difficult to meet the needs of efficient production. Summary of the Invention

[0004] This application provides an eccentric bolt and a vehicle-based eccentric bolt adjustment method to improve the efficiency of eccentric bolt angle adjustment.

[0005] In a first aspect, embodiments of this application provide an eccentric bolt, which includes a bolt body, a positioning block, and an eccentric groove limiting block;

[0006] Multiple limiting slots are provided on the first target surface of the eccentric slot limiting block, and the limiting slots are arranged at intervals along the circumference of the first target surface and extend radially.

[0007] A positioning key adapted to the limiting slot is provided on the second target surface of the positioning block;

[0008] The bolt body is connected to the positioning block.

[0009] In one possible implementation, each limiting slot in the eccentric slot limiting block intersects at a preset point on the first target surface;

[0010] The positioning key on the positioning block passes through a preset point on the second target surface and extends radially.

[0011] In one possible implementation, a handle is provided on the third target surface of the eccentric slot limiting block.

[0012] In one possible implementation, the eccentric bolt includes a pre-embedded magnet;

[0013] The embedded magnet is used to connect the eccentric slot limiting block and the positioning block.

[0014] In one possible implementation, a positioning groove is provided on the fourth target surface of the positioning block;

[0015] The bolt body is provided with a positioning structure;

[0016] The positioning structure is positioned and installed in the positioning groove.

[0017] In one possible implementation, the positioning structure is a hexagonal pan head, and the positioning groove is a hexagonal groove adapted to the hexagonal pan head.

[0018] Secondly, embodiments of this application provide a method for adjusting an eccentric bolt based on a vehicle, comprising: an eccentric bolt as described in any one of claims 1-6 installed on the vehicle, the eccentric bolt comprising a positioning block and an eccentric slot limiting block; a plurality of limiting slots being provided on a first target surface of the eccentric slot limiting block, the limiting slots being arranged at circumferential intervals along the first target surface, the limiting slots extending radially; a positioning key adapted to the limiting slots being provided on a second target surface of the positioning block; the method comprising:

[0019] Acquire the vehicle's camber angle data within a preset time period;

[0020] Based on the camber angle data within the preset time period, the camber offset information of the vehicle is determined; wherein, the camber offset information characterizes the degree of deviation between the camber angle of the wheel and the preset angle;

[0021] Based on the outward tilt offset information, the adjustment angle of the eccentric bolt is determined; wherein, the adjustment angle is used to indicate the embedding relationship between the adjustment positioning key and the limit slot.

[0022] In one possible implementation, determining the vehicle's camber offset information based on camber angle data within the preset time period includes:

[0023] Based on the camber angle data within the preset time period, the dispersion information of the vehicle is determined; wherein, the dispersion information characterizes the degree of dispersion of the camber angle data within the preset time period;

[0024] If the dispersion information meets the preset conditions, then the camber offset information of the vehicle is determined based on the camber angle data within the preset time period.

[0025] In one possible implementation, determining the adjustment angle of the eccentric bolt based on the outward tilt offset information includes:

[0026] Based on a preset first association relationship, the distance information corresponding to the camber offset information is determined as the target distance; wherein, the preset first association relationship represents the association relationship between the camber offset information and the distance information, and the distance information represents the distance that the lower control arm needs to move in a preset direction;

[0027] Based on a preset second correlation, an adjustment angle corresponding to the target distance is determined, which is the adjustment angle of the eccentric bolt; wherein, the preset second correlation represents the correlation between distance information and adjustment angle.

[0028] In one possible implementation, determining the adjustment angle of the eccentric bolt based on the outward tilt offset information includes:

[0029] Obtain the vehicle's driving information and environmental information within a preset time period;

[0030] Based on the driving information, environmental information, and camber offset information, the adjustment angle of the eccentric bolt is determined according to a preset model; wherein, the preset model is a pre-trained neural network model, which is used to predict the adjustment angle of the eccentric bolt based on the driving information, environmental information, and camber offset information.

[0031] This application provides an eccentric bolt and a vehicle-based eccentric bolt adjustment method. By setting an eccentric slot limiting block with limiting slots of multiple angles and a matching positioning block, the installation angle of the eccentric bolt can be precisely adjusted, improving the adjustment efficiency and accuracy of the eccentric bolt angle. During vehicle operation, by combining the collection and feedback analysis of camber angle data, the deviation of the vehicle's camber angle is determined, and the adjustment angle required for compensation of the eccentric bolt is determined in a timely manner, so that the camber angle tends to the design median value, further improving the adjustment efficiency and accuracy of the eccentric bolt, effectively enhancing suspension performance and vehicle handling stability, and reducing rework rate and production costs. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0033] Figure 1 This is a schematic diagram of the structure of an eccentric bolt provided in an embodiment of this application;

[0034] Figure 2 A front view of the first target surface of the eccentric slot limiting block provided in an embodiment of this application;

[0035] Figure 3 A front view of the positioning block provided in an embodiment of this application;

[0036] Figure 4 A side view of the positioning block provided in an embodiment of this application;

[0037] Figure 5 This is a schematic diagram of the structure of an eccentric bolt provided in an embodiment of this application;

[0038] Figure 6 A schematic diagram of the tooling for the eccentric bolt provided in the embodiments of this application;

[0039] Figure 7 A schematic flowchart illustrating a vehicle-based eccentric bolt adjustment method provided in this application embodiment;

[0040] Figure 8 A schematic diagram illustrating the engagement of the limiting slot and the positioning key provided in an embodiment of this application;

[0041] Figure 9 A schematic diagram of a vehicle-based eccentric bolt adjustment device provided in an embodiment of this application;

[0042] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0043] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0044] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0045] It should be noted that, in the embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a method or apparatus that includes a list of elements includes not only the elements expressly described, but also other elements not expressly listed, or elements inherent to implementing the method or apparatus. Without further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other related elements in the method or apparatus that includes that element (e.g., steps in the method or modules in the apparatus; for example, a module may be a portion of circuitry, a portion of a processor, a portion of a program or software, etc.).

[0046] For example, the vehicle-based eccentric bolt adjustment method provided in the embodiments of the present invention includes a series of steps. However, the vehicle-based eccentric bolt adjustment method provided in the embodiments of the present invention is not limited to the steps described herein. Similarly, the vehicle-based eccentric bolt adjustment device provided in the embodiments of the present invention includes a series of modules. However, the vehicle-based eccentric bolt adjustment device provided in the embodiments of the present invention is not limited to the modules explicitly described, but may also include modules that need to be set up for obtaining relevant information or processing based on the information.

[0047] This invention provides an eccentric bolt and a vehicle-based method for adjusting the eccentric bolt, which can be applied to vehicles.

[0048] It should be noted that the above-mentioned vehicle-based eccentric bolt adjustment method can be implemented through the processor of the vehicle terminal. The processor can be at least one of the following: Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), controller, microcontroller, and microprocessor.

[0049] In one embodiment, the vehicle terminal may include an audio acquisition device, an audio output device, a video acquisition device, a video output device, a human-computer interaction device, and a processor as described above; for example, the human-computer interaction device may include a display screen capable of acquiring and recognizing touch operations, but this embodiment of the present invention does not limit this.

[0050] With the development of automotive manufacturing technology, double wishbone suspensions have been widely used in mid-to-high-end models due to their excellent handling and comfort. However, this structure faces the problem of a low first-pass yield rate for the front suspension camber angle during actual production. Due to manufacturing tolerances, assembly deviations, and measurement errors, the wheel camber angle often deviates from the design mean value. Especially for models with high sensitivity to wheel slippage, the camber angle needs to be controlled within ±0.3°. This requirement leads to a large workload for production line adjustments, tight schedules, and increased costs.

[0051] Currently, most solutions rely on improving the machining precision of parts or online fine adjustment. However, the former significantly increases manufacturing costs, while the latter is inefficient and difficult to optimize in a closed loop. Therefore, there is an urgent need for a simple, responsive, and cost-effective eccentric bolt and adjustment method to improve the adjustment accuracy and efficiency of the outward tilt angle, i.e., to improve the adjustment accuracy and efficiency of the eccentric bolt.

[0052] The present invention provides an eccentric bolt and a vehicle-based method for adjusting the eccentric bolt, which aims to solve the above-mentioned technical problems.

[0053] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0054] Figure 1 A schematic diagram of an eccentric bolt provided in an embodiment of the present invention is shown, as follows: Figure 1 As shown, an eccentric bolt may include a bolt body 10, a positioning block 20, and an eccentric groove limiting block 30.

[0055] Multiple limiting slots 301 are provided on the first target surface of the eccentric slot limiting block 30. Each limiting slot 301 is arranged at intervals along the circumference of the first target surface and extends radially.

[0056] A positioning key 201 adapted to the limiting slot 301 is provided on the second target surface of the positioning block 20;

[0057] The bolt body 10 is connected to the positioning block 20.

[0058] For example, the eccentric bolt in this embodiment is an eccentric bolt structure that enables precise adjustment of the installation angle. Through the cooperation of a mechanical slot and a positioning key, the overall orientation of the eccentric bolt can be adjusted to compensate for the camber deviation caused by accumulated manufacturing and assembly errors. The eccentric bolt includes three core components: a bolt body 10, a positioning block 20, and an eccentric slot limiting block 30. The bolt body 10, as the main load-bearing component, connects the lower control arm and the subframe in the suspension system and achieves fine-tuning of its position through its eccentric structure. The positioning block 20 is a key intermediate element for angle setting. One end of the positioning block 20 is fixedly connected to the bolt body 10, and the other end is provided with a positioning key 201 for angle positioning. The surface where the positioning key 201 is located is the second target surface. The eccentric slot limiting block 30 is an external tooling component with multiple circumferentially distributed limiting slots 301 to match the positioning key 201 on the positioning block 20, forming a multi-level angle adjustment mechanism. The surface where the limiting slots 301 are located is the first target surface.

[0059] The first target surface of the eccentric slot limiting block 30 refers to the mating end face facing the positioning block 20. Multiple limiting slots 301 are formed on this end face. These limiting slots 301 are arranged at uniform or non-uniform intervals around the center of the first target surface in a circular direction. The specific number can be determined according to the required resolution adjustment; for example, one slot can be set every 6°, for a total of 10 slots to cover the range of 0° to 60°. Each limiting slot 301 extends radially, from the edge of the first target surface towards the center and through the center. The first target surface can be circular, and the length of the limiting slot 301 can be its diameter. The depth and width can be designed to match the dimensions of the positioning key 201, ensuring sufficient torsional strength and positioning stability after embedding. When the positioning key 201 is embedded in the limiting slots 301 at different positions, the entire eccentric bolt undergoes a corresponding change in rotation angle, thereby achieving precise control of the eccentric direction.

[0060] The second target surface of the positioning block 20 is a mating surface corresponding to the first target surface, and a positioning key 201 adapted to the limiting slot 301 is provided on it. The positioning key 201 can be a raised structure, such as a spline tooth, a trapezoidal tenon, or a rectangular boss, with its axis passing through the geometric center of the second target surface and extending radially to ensure rotational symmetry and accurate angle transmission. The number of positioning keys 201 can be one or more. A clearance fit or a transition fit can be used between the positioning key 201 and the limiting slot 301, facilitating quick insertion and removal while preventing loosening and detachment. In some embodiments, the positioning key 201 can be covered with an elastic material or have an undercut structure to improve connection reliability.

[0061] The connection between the bolt body 10 and the locating block 20 can be selected by welding, riveting, threaded connection, or integral molding. For example, the head of the bolt body 10 has a locating structure, such as a hexagonal pan head, while the locating block 20 has a corresponding locating groove, such as a hexagonal groove. Circumferential fixation is achieved through interference fit or fasteners to ensure that relative rotation does not occur during torque transmission. This modular design facilitates disassembly and maintenance, and also supports batch replacement of locating blocks of different specifications to meet the needs of various vehicle models.

[0062] In this embodiment, each limiting slot 301 in the eccentric slot limiting block 30 intersects at a preset point on the first target surface; the positioning key 201 on the positioning block 20 passes through the preset point on the second target surface and extends radially.

[0063] Specifically, the first target surface of the eccentric slot limiting block 30 is provided with multiple limiting slots 301. These limiting slots 301 are arranged at circumferential intervals and extend radially. The extension paths of all the limiting slots 301 converge in space and intersect at a preset point on the first target surface, i.e., a preset point, which may be the geometric center point. This radial arrangement ensures that each limiting slot 301 has the same angular spacing relative to the preset point, forming a symmetrical distribution pattern with the center as the origin of rotation. For example, Figure 2 This is a front view of the first target surface of the eccentric slot limiting block. Figure 2 The device has seven limiting slots with angles of 0°, -20°, 20°, -40°, 40°, -60°, and 60°. Non-uniformly distributed slots can also be used according to actual adjustment needs, but their extension lines must still converge at the same preset point to maintain the consistency of the rotational adjustment reference. This first target surface is usually one end face or mounting surface of the eccentric slot limiting block; its surface flatness and center positioning accuracy directly affect the overall adjustment performance.

[0064] The second target surface of the positioning block 20 is provided with a positioning key 201 that matches the limiting slot 301. The positioning key 201 starts from a preset point on the second target surface and extends radially outward, with its axis passing through the geometric center of the target surface. The length of the positioning key 201 can be greater than the diameter of the second target surface. For example... Figure 3 and Figure 4 As shown, Figure 3 This is the front view of the positioning block. Figure 4 This is a side view of the positioning block. When the positioning key 201 is embedded in either of the limiting slots 301, the engagement between the two always revolves around a common rotation center, avoiding angular deviations caused by eccentricity or misalignment. The cross-sectional shape of the positioning key 201 can be designed as rectangular, trapezoidal, or polygonal to match the contour of the limiting slot, ensuring torsional resistance and anti-rotation effect. In this embodiment, the positioning key 201 can also be detachably installed on the positioning block 20, facilitating the replacement of key bodies of different sizes or angular characteristics to adapt to the adjustment needs of various specifications of eccentric bolts.

[0065] The spatial relationship between the limiting slot 301 and the positioning key 201 constitutes a mechanical positioning system based on center alignment. When the positioning block 20 rotates relative to the eccentric slot limiting block 30, the positioning key 201 slides into different limiting slots 301 in sequence, with each insertion corresponding to a preset angular position. Since all limiting slots 301 pass through preset points and are radially distributed, and the positioning key 201 also extends radially from the center, the change in rotational angle formed by each switch remains consistent, achieving equal-angle incremental adjustment. This structure not only improves the intuitiveness and predictability of the adjustment operation but also reduces the risk of human error or improper assembly. In addition, the center alignment design facilitates the unification of positioning references during the processing, reduces the accumulation of manufacturing errors, and improves the interchangeability and assembly efficiency between tooling parts.

[0066] By configuring both the limiting slot 301 and the positioning key 201 as radial structures with their respective target surface centers as references, symmetry and consistency are achieved during the angle adjustment process, thereby improving the accuracy and repeatability of angle positioning during eccentric bolt assembly. This design is particularly suitable for applications requiring multi-level, equal-angle step adjustment, such as the initial adjustment of the camber angle of a vehicle suspension system, achieving a high degree of symmetry and geometric consistency in the spatial layout of the limiting structure.

[0067] In this embodiment, when assembling the eccentric bolt, the operator can select the corresponding limiting slot according to actual needs, insert the positioning key on the positioning block into it, and use the eccentric slot limiting block to lock the angle; then, the assembly is placed in the installation position of the subframe, and the fastening nut is tightened to complete the installation of the eccentric bolt at the preset angle. Since the eccentricity of the eccentric bolt is directly related to its rotation angle, the Y-axis position of the lower control arm lateral tie rod can be changed by rotating the angle, thereby affecting the wheel camber angle and making the camber angle tend to the design median value. The Y-axis refers to the left-right position of the vehicle in the vehicle coordinate system.

[0068] This embodiment of the application, by setting circumferentially distributed radial limiting grooves on the eccentric groove limiting block and cooperating with the positioning key on the positioning block, can achieve multi-level, high-precision angle presets. Furthermore, because the bolt body is rigidly connected to the positioning block, the preset angle can be stably transmitted to the working state of the eccentric bolt, thereby flexibly adjusting the suspension geometry parameters without changing the machining accuracy of the parts. Therefore, this structure effectively solves the problem of camber angle deviation caused by manufacturing and assembly errors, improves the first-pass yield of vehicles, reduces rework costs, and has advantages such as simple structure, convenient operation, and high reusability, making it suitable for mass automated assembly scenarios.

[0069] Figure 5 To illustrate the structural schematic diagram of an eccentric bolt provided in an embodiment of the present invention, as shown below... Figure 5As shown, an eccentric bolt may include a bolt body 10, a positioning block 20, an eccentric slot limiting block 30, and a pre-embedded magnet 40.

[0070] In this embodiment, a handle 302 is provided on the third target surface of the eccentric slot limiting block 30.

[0071] Specifically, the handle 302 is disposed on the third target surface of the eccentric slot limiting block 30, serving as a structural component for the operator's handheld operation, used to achieve overall gripping and positioning of the tooling during assembly. The third target surface is the side facing away from the first target surface. The handle 302 can be a solid structure protruding from the third target surface, and its shape can be designed as an arc, U-shape, or finger groove recessed structure to adapt to the human hand grip posture and improve grip comfort and stability. The material of the handle 302 can be the same as the main body of the eccentric slot limiting block 30, for example, it can be integrally machined from high-strength metal material to ensure structural strength; it can also be a split design, installed on the third target surface by threaded connection, welding, or embedded fixing, for easy replacement or maintenance.

[0072] The third target surface is a designated surface on the eccentric slot limiting block 30 used for installation or operation. Its position can be set according to the overall layout of the tooling and the usage scenario, and it is usually located on the side away from the working area of ​​the limiting slot 301 to avoid interfering with the assembly action. The arrangement direction of the handle 302 on this surface should facilitate the application of rotational torque or axial push-pull force, thereby assisting the operator in accurately aligning the tooling with and embedding it into the eccentric slot position on the subframe. In practical applications, the length, height, and tilt angle of the handle 302 can be adjusted according to space constraints and ergonomic parameters to adapt to the operating needs of different vehicle assembly environments.

[0073] In this embodiment, because a handle 302 is provided on the third target surface of the eccentric slot limiting block 30, the operator can hold the tooling more stably and complete precise positioning and fixing actions in narrow or poorly visible assembly spaces. This reduces the risk of misalignment caused by slipping or unstable grip, and improves assembly efficiency and operational safety. This structure requires no complex mechanical modifications, is low in cost, easy to manufacture, and does not affect the normal operation of other functional modules of the tooling, thus possessing good practicality and promotional value.

[0074] In this embodiment, the eccentric bolt includes a pre-embedded magnet 40; the pre-embedded magnet 40 is used to connect the eccentric slot limiting block 30 and the positioning block 20.

[0075] Specifically, by introducing a pre-embedded magnet 40 into the eccentric bolt structure, a quick and stable connection between the eccentric slot limiting block 30 and the positioning block 20 is achieved.

[0076] An embedded magnet 40, as a key component for achieving detachable fixing of the two parts, is pre-embedded into the internal structure of at least one of the two parts, the eccentric slot limiting block 30 and the positioning block 20. For example, it is positioned within the inner cavity of the eccentric slot limiting block 30 or on the mating surface of the positioning block 20, avoiding exposure that could cause wear or affect assembly accuracy. Figure 5 As shown, there is a circular pattern in the middle of the first target surface. This circular pattern is an inward-facing groove into which a pre-embedded magnet 40 can be inserted. The shape of the pre-embedded magnet 40 can be designed as circular, square, or polygonal according to the installation space, and its size is adapted to the preset groove to ensure that it does not loosen or shift after installation.

[0077] The eccentric slot limiting block 30 and the positioning block 20 achieve automatic locking after alignment through the magnetic attraction generated by the pre-embedded magnet 40. When the operator aligns the positioning key 201 on the positioning block 20 with the limiting slot 301 on the eccentric slot limiting block 30 and rotates it to the target angle, the contact surfaces of the two come close and quickly adhere to each other under the action of magnetic force, forming a stable assembly. This connection method eliminates the need for additional mechanical fasteners such as screws, pins, or clips, simplifying the overall structure of the tooling, reducing the number of parts and assembly steps, and improving on-site operation efficiency. At the same time, because the magnetic attraction is evenly distributed along the contact surface, it can effectively suppress relative slippage caused by vibration or handling, ensuring the accuracy and consistency of angle setting.

[0078] In this embodiment, a boltless, fast, and reliable magnetic connection is achieved between the eccentric slot limiting block 30 and the positioning block 20. Because a pre-embedded magnet 40 is used as the connection method, the problems of easy loosening, cumbersome assembly, and complex structure in traditional connection methods are solved. This improves assembly efficiency, enhances connection stability, and extends service life, and helps to improve the response speed and process consistency of the tilt angle compensation adjustment.

[0079] In this embodiment, a positioning groove 202 is provided on the fourth target surface of the positioning block 20; a positioning structure 101 is provided on the bolt body 10; the positioning structure 101 is positioned and installed in the positioning groove 202.

[0080] Specifically, a positioning groove 202 is provided on the positioning block 20, and a corresponding positioning structure 101 is configured on the bolt body 10, so that the two can form a stable positioning fit relationship during the assembly process, thereby ensuring the angular consistency and repeatability of the eccentric bolt during installation.

[0081] The fourth target surface is a specific surface on the positioning block 20 used for connection and positioning with the bolt body 10. Its position and orientation are set according to the overall structural layout, and it is usually a flat surface or an end face with a certain curvature to facilitate processing and assembly. For example, it can be the side opposite to the second target surface. As the bearing base surface of the positioning groove 202, the fourth target surface must have sufficient structural strength and flatness to ensure positioning accuracy. In some optional embodiments, the fourth target surface can be located on the side of the positioning block away from the eccentric slot limiting block 30 to facilitate observation and operation during assembly.

[0082] A positioning groove 202 is disposed on the fourth target surface to receive and limit the positioning structure 101. The shape of the positioning groove 202 is adapted to the positioning structure 101, and can be a polygonal groove, keyway, D-hole, or other non-circular symmetrical structure, etc., to prevent the bolt body 10 from rotating circumferentially relative to the positioning block 20. The positioning groove 202 can be formed by machining, and the material can be the same metal material as the positioning block 20 to ensure wear resistance and dimensional stability. In this embodiment, the positioning groove 202 can be designed as a replaceable insert structure, which is installed on the fourth target surface by thread or interference fit, facilitating maintenance and specification changeover.

[0083] The positioning structure 101 is mounted on the bolt body 10, and its shape matches the positioning groove 202, enabling circumferential fixation after insertion. The positioning structure 101 can be a protrusion, such as a hexagonal pan head, D-type shaft head, spline head, or polygonal cylinder, with precisely designed dimensions to form a clearance fit or transition fit with the positioning groove 202, ensuring smooth assembly while preventing loosening. The positioning structure 101 can be integrally formed with the bolt body 10, or it can be additionally connected by welding, press-fitting, or other methods.

[0084] During assembly, the positioning structure 101 on the bolt body 10 is aligned and embedded into the positioning groove 202 on the positioning block 20, thus locking the relative angle. This installation process can be completed with visual assistance or tooling guidance, ensuring repeatability of the assembly accuracy each time. Since both the positioning groove 202 and the positioning structure 101 are non-circular symmetrical designs, they can only be fully engaged at a specific angle, thereby achieving unique angular positioning. This effectively restricts the free rotation of the bolt body 10 around its axis, providing a reliable initial reference position for subsequent eccentric adjustment.

[0085] In this embodiment, during the assembly of the eccentric bolt, the rotational freedom of the bolt body 10 relative to the positioning block 20 is constrained by the cooperation between the positioning structure 101 and the positioning groove 202. This solves the problem of installation angle deviation caused by the lack of effective positioning, and improves the assembly accuracy and reliability of the overall structure. This design is particularly suitable for vehicle suspension adjustment scenarios that require high repeatability positioning accuracy. Without adding a complex control system, it achieves a simple, efficient, and stable angle preset function.

[0086] In this embodiment, the positioning structure 101 is a hexagonal pan head, and the positioning groove 202 is a hexagonal groove adapted to the hexagonal pan head.

[0087] Specifically, the positioning structure 101 is designed as a hexagonal pan head, and a hexagonal groove matching its shape, namely the positioning groove 202, is set on the positioning block 20, so that the two form a mating relationship, thereby effectively restricting relative rotational movement and ensuring that the initial angle of the eccentric bolt can be accurately fixed and kept stable during the assembly process.

[0088] A hexagonal pan head is a head structure with six symmetrical sides, located at one end of the bolt body 10. Its outer contour is a regular hexagon, possessing good torsional resistance and machinability. As a positioning structure 101, the hexagonal pan head primarily functions to embed into the hexagonal groove on the positioning block 20 during assembly, achieving circumferential limiting and preventing the bolt from rotating when the back nut is tightened, thereby ensuring that the eccentric angle setting does not deviate.

[0089] The cross-sectional shape of the hexagonal groove matches that of the hexagonal pan head, also being a regular hexagon, but slightly larger than the circumscribed circle diameter of the hexagonal pan head. This allows for an appropriate assembly clearance, balancing ease of assembly with positioning accuracy. The hexagonal groove's function is to form a multi-faceted contact fit with the hexagonal pan head, providing constraint forces in both the radial and circumferential directions. Particularly in the circumferential direction, it forms six bearing surfaces, evenly distributing shear stress and significantly improving the torsional stiffness and repeatability of the connection structure.

[0090] In practical applications, when the eccentric bolt is installed onto the subframe and passes through the tooling's preset angle, the hexagonal pan head is inserted into the hexagonal groove, locking the entire bolt body circumferentially. At this point, even if a large tightening torque is applied to the nut end, the bolt head will not rotate relative to the positioning block 20, thus ensuring the accuracy of the preset eccentric angle. Furthermore, because the hexagonal structure is a standardized geometry, it possesses excellent interchangeability and versatility, allowing for rapid replacement and maintenance between tooling batches or models, reducing production preparation time and costs.

[0091] In this embodiment, the positioning structure can also adopt other polygonal pan head forms, such as square pan head or octagonal pan head. Correspondingly, the positioning groove is designed as a quadrilateral or octagonal groove, which can still achieve a similar anti-rotation function. Alternatively, in some scenarios with high space requirements, the hexagonal pan head can be replaced with a cylindrical head structure with a flat keyway, which, together with the key and keyway, achieves circumferential positioning. Although the structural complexity increases slightly, it is suitable for specific compact layout requirements. Figure 6 This is a schematic diagram of the tooling for the eccentric bolt. The eccentric bolt is connected to the subframe 50. The eccentric bolt includes an adjustable eccentric slot limiting block 30, a pre-embedded magnet 40, a positioning block 20, and a bolt body 10. When connecting the eccentric bolt to the vehicle, firstly, the positioning block 20 is rotated into the corresponding angle slot according to the required adjustment angle. Then, the positioning block 20 and the eccentric slot limiting block 30 are clamped together by the pre-embedded magnet 40. Then, the angle of the eccentric bolt is limited by the boundary of the eccentric slot on the subframe 50 and the hexagonal head groove on the positioning block 20. Finally, the nut on the back of the eccentric bolt is tightened to complete the installation of the eccentric bolt.

[0092] This embodiment achieves a reliable mechanical lock between the positioning structure and the positioning groove. By adopting a surface contact engagement method between a hexagonal pan head and a hexagonal groove, it solves the problem that the connecting structure is prone to relative rotation under high torque assembly conditions, which leads to angular deviation. This achieves the effects of improving positioning accuracy, enhancing torsional resistance, and ensuring the consistency of initial assembly of eccentric angle. At the same time, the structure is simple, easy to process, and convenient for automated assembly, making it suitable for the high-efficiency operation requirements in a mass automotive manufacturing environment.

[0093] Figure 7 This illustration shows a flowchart of a vehicle-based eccentric bolt adjustment method according to an embodiment of this application. The method is executed by a vehicle-based eccentric bolt adjustment device. Figure 7 As shown, the method includes the following steps:

[0094] S701, Obtain the camber angle data of the vehicle within a preset time period.

[0095] For example, as automotive suspension system designs become increasingly complex, especially with the widespread application of double wishbone front suspension structures in high-end models, the assembly accuracy of wheel camber angle directly affects the vehicle's handling stability and drift performance. Due to manufacturing tolerances, component assembly deviations, and measurement errors, the front suspension camber angle often deviates from the design mean value when a vehicle leaves the factory. This is particularly true for high-performance models that are sensitive to camber angle, requiring the camber angle to be controlled within ±0.3° to meet production standards. Current production practices often rely on manual adjustment based on experience or rework after online inspection for angle compensation. This approach is slow, inefficient, and makes it difficult to achieve proactive intervention and closed-loop optimization, resulting in impacted production line cycle time, high rework rates, and increased manufacturing costs.

[0096] This embodiment provides a method for adjusting eccentric bolts on a vehicle. The vehicle is equipped with the eccentric bolts described in the above embodiment. The eccentric bolts include a positioning block and an eccentric slot limiting block. Multiple limiting slots are provided on the first target surface of the eccentric slot limiting block, with each limiting slot arranged circumferentially along the first target surface and extending radially. A positioning key adapted to the limiting slots is provided on the second target surface of the positioning block.

[0097] The eccentric bolt is an adjustable mechanical connector. By changing the engagement position of the locating key with different limiting slots, the Y-axis position of the lower control arm tie rod can be finely adjusted, thus affecting the wheel camber angle. The first target surface is a working end face of the eccentric slot limiting block used to accommodate the locating key. Multiple radially distributed limiting slots are formed on this end face, arranged in a circular array around the center, creating multiple discrete angle adjustment positions. The limiting slots can be V-shaped, U-shaped, or rectangular, with a cross-sectional shape matching the locating key to ensure no circumferential slippage occurs during positioning. The second target surface is the corresponding mating surface on the locating block, which has a locating key. This locating key can be a spline, tenon, or pin, and can be selectively inserted into any limiting slot to achieve angle locking. By changing different insertion combinations, the phase angle of the eccentric bolt can be precisely controlled, thereby adjusting the suspension geometry.

[0098] Camber angle data of vehicles can be periodically acquired within a preset time period before or after the vehicle leaves the factory, allowing for timely angle compensation of the eccentric bolts. The preset time period refers to the data acquisition window used for statistical analysis, such as a week, a shift, or a batch of production, which can be flexibly set according to production line rhythm and data stability. If the vehicle is before leaving the factory, the camber angle data can come from the actual measurement results of the four-wheel alignment machine at the vehicle assembly line, covering the camber angle values ​​of the left and right front wheels. This data can be automatically collected and stored in the database through the MES (Manufacturing Execution System). If the vehicle is after leaving the factory, the camber angle data can be acquired based on preset sensors. The data format can be raw measurements, mean, range, or trend curves. The acquisition process requires no additional manual intervention and is continuous and traceable. In this embodiment, wireless sensors can be used to transmit camber change data in real time under dynamic driving conditions for more refined compensation modeling.

[0099] S702. Determine the camber offset information of the vehicle based on the camber angle data within a preset time period; wherein, the camber offset information characterizes the degree of deviation between the camber angle of the wheel and the preset angle.

[0100] For example, the preset angle is the median of the target camber angle in the design specifications, also known as the design median, which is usually determined by the vehicle manufacturer based on the principle of balancing handling and tire wear. Camber offset information can be obtained by calculating the difference between the arithmetic mean of the measured data and the preset angle; the measured data is the collected camber angle data. The camber offset information of multiple vehicles can reflect the systematic deviation trend. For example, if the average left front wheel camber angle of 20 consecutive vehicles is −0.85°, while the target value is −0.5°, then the camber offset information is −0.35°, indicating that the overall trend is negative, and positive compensation is required through eccentric bolts.

[0101] In this embodiment, determining the camber offset information of the vehicle based on the camber angle data within a preset time period includes: determining the dispersion information of the vehicle based on the camber angle data within the preset time period; wherein, the dispersion information characterizes the degree of dispersion of the camber angle data within the preset time period; if the dispersion information meets preset conditions, then determining the camber offset information of the vehicle based on the camber angle data within the preset time period.

[0102] Specifically, by statistically analyzing the camber angle data collected within a preset time period, indicators reflecting the data fluctuation characteristics are extracted as dispersion information. Dispersion information is used to quantify the distribution stability of camber angle data within the preset time period, i.e., its degree of dispersion. For example, statistical measures such as standard deviation, variance, range, and interquartile range can be used to characterize dispersion information. These statistical methods can effectively identify whether there are abnormal fluctuations or outliers in the camber angle data. In practical applications, camber angle data of the left and right front wheels of vehicles coming off the production line can be obtained periodically from four-wheel alignment equipment, and dispersion information can be calculated for each side of the wheel. Taking standard deviation as an example, when n camber angle data are collected in a certain week, the average value is calculated first, and then the standard deviation is calculated based on the average value as dispersion information. The smaller the standard deviation value, the higher the consistency of the camber angle; conversely, it indicates that there are large fluctuations in the assembly process.

[0103] During the manufacturing process, even if the average camber angle is close to the design mean, excessive variance can still cause some vehicles to exceed the tolerance zone, affecting the overall vehicle's performance. Therefore, introducing variance information helps to comprehensively evaluate the suspension assembly quality.

[0104] Pre-set conditions are established for judging dispersion information. For example, the preset conditions may be pre-defined thresholds. The determination of whether the dispersion information meets the preset conditions involves, for example, comparing the calculated dispersion information with the pre-defined threshold. If the dispersion information is greater than the preset threshold, the preset conditions are considered met; otherwise, they are not. The preset conditions can be a single threshold comparison. For example, if the standard deviation is less than 0.15°, the camber angle data is considered stable and no further angle adjustment is needed, i.e., the preset conditions are not met. Alternatively, they can be composite logical conditions. For example, if the range does not exceed 0.4° and there are no outliers, the camber angle data is considered stable and no further angle adjustment is needed, i.e., the preset conditions are not met. In this embodiment, the preset conditions can be adaptively adjusted according to vehicle characteristics, historical production line data, or seasonal changes, without specific limitations.

[0105] If the dispersion information meets the preset conditions, subsequent angle compensation is required, which means that the camber offset information of the vehicle needs to be determined based on the camber angle data within the preset time period; if the dispersion information does not meet the preset conditions, subsequent angle compensation is not required.

[0106] Camber offset information characterizes the degree of deviation between the wheel's camber angle and the preset angle. For example, camber offset information is usually expressed as the difference between the average camber angle data and the design median value, in degrees. For instance, if the design median camber angle of a certain vehicle model is -0.5°, while the average measured value this week is -0.7°, then the camber offset information is -0.2°, indicating an overall negative bias. This needs to be compensated by adjusting the eccentric bolts to tilt the top of the wheel outwards.

[0107] This embodiment achieves effective identification of outboard tilt data quality and scientific linkage between control and adjustment decisions. By introducing dispersion information as a preliminary judgment basis, the risk of misadjustment due to accidental noise or short-term anomalies is avoided; by quantitatively evaluating the degree of dispersion, the algorithm's ability to identify real process trends is improved; combined with the flexible configuration of preset conditions, the robustness and applicability of the system are enhanced; ultimately, the accuracy and reliability of the eccentric bolt adjustment commands are ensured, providing a reliable data foundation for achieving the goal of outboard tilt angle approaching the design median value.

[0108] S703. Determine the adjustment angle of the eccentric bolt based on the outward tilt offset information; wherein, the adjustment angle is used to indicate the embedding relationship between the adjustment positioning key and the limit slot.

[0109] For example, the adjustment angle refers to the change in the rotation angle of the eccentric bolt to counteract the outward tilt offset. Essentially, it involves reselecting which limiting slot the locating key is embedded in, thereby changing the direction and magnitude of the eccentricity. This angle can be obtained through methods such as table lookup, analytical calculation, or model prediction. For instance, angle numbers corresponding to each limiting slot can be pre-defined, such as 0°, 6.3°, 13.9°, etc. Based on the outward tilt offset information, the corresponding angle number can be found. This angle number indicates the adjustment angle of the eccentric bolt, and is directly issued to the assembly station for operators to adjust, i.e., change the limiting slot that engages with the locating key.

[0110] Figure 8 This is a schematic diagram showing the engagement of the limit slot and the positioning key. Figure 8 In the diagram, the dashed line represents the positioning block, and the rectangle within the dashed line is the positioning key, which engages with the 0° limit slot.

[0111] In this embodiment, determining the adjustment angle of the eccentric bolt based on the camber offset information includes: determining the distance information corresponding to the camber offset information as the target distance based on a preset first correlation relationship; wherein the preset first correlation relationship represents the correlation between the camber offset information and the distance information, and the distance information represents the distance that the lower control arm needs to move in a preset direction; and determining the adjustment angle corresponding to the target distance as the adjustment angle of the eccentric bolt based on a preset second correlation relationship; wherein the preset second correlation relationship represents the correlation between the distance information and the adjustment angle.

[0112] Specifically, camber offset information refers to the average deviation of the wheel camber angle from the design median value collected within a preset time period. This parameter reflects the geometric deviation trend of the front suspension system under the current vehicle assembly state. The first correlation is a preset mapping relationship established based on the kinematic model of the suspension system, used to convert the macroscopic performance index, i.e., camber angle deviation, into an executable mechanical displacement at the structural level. This first correlation can be obtained through theoretical modeling, simulation analysis, or actual measurement calibration, and stored in the form of mathematical functions, lookup tables, or empirical formulas. For example, using 3DCS (3-Dimensional Constraint Simulation) dimensional deviation analysis software to perform tolerance accumulation simulation on a double wishbone suspension, the camber angle change curve under different combinations of manufacturing errors is output as the preset first correlation. From the camber change curve, the target distance that the lower control arm needs to move in a preset direction to compensate for a certain camber offset can be deduced. The preset direction can be the Y-axis, and the target distance is the Y-axis displacement value, usually in millimeters. The displacement direction of the target distance can depend on the offset polarity. In this embodiment, the preset first correlation can also be obtained through bench test calibration. For example, components with known dimensional deviations can be artificially introduced onto the test bench, and the corresponding camber angle output can be measured to construct a "camber offset - tie rod displacement" comparison database, enabling rapid table lookup and matching. "Camber offset" represents camber offset information, and "tilt rod displacement" represents the target distance.

[0113] Table 1. Schematic diagram of the correlation between outward tilt offset information and distance information.

[0114]

[0115] In Table 1, -2, -1, 0, 1, and 2 represent the distances between the front and rear control arms. The intersection of the movement distances of the front and rear control arms indicates the camber offset. By consulting Table 1, the movement distances of the front and rear control arms can be determined. Based on the vehicle's tooling design, the target distance that the lower control arm needs to move in the preset direction can then be obtained.

[0116] The second correlation describes the nonlinear functional relationship between the target distance the lower control arm actually needs to move and the rotation angle of the eccentric bolt it depends on. Since the eccentric bolt drives the connecting component to generate radial displacement through its eccentric structure, there is a definite geometric functional relationship between this displacement and the rotation angle, specifically determined by the eccentricity, the relative position of the bolt axis and the connecting arm, and the installation constraints. The preset second correlation can be established in advance through experimental testing or motion simulation and solidified into a "displacement-angle" lookup table or a fitted polynomial equation. "Displacement" represents the target distance, and "angle" represents the adjustment angle, i.e., the rotation angle of the eccentric bolt. By looking up the table or interpolating, the required adjustment angle can be derived from the target distance with an accuracy within 0.1°. In this embodiment, multiple independent datasets of the second correlation can be configured for different vehicle models or different specifications of eccentric bolts, supporting flexible production switching.

[0117] Table 2. Schematic diagram of the relationship between distance information and adjustment angle.

[0118]

[0119] By referring to Table 2, the adjustment angle corresponding to the target distance can be determined.

[0120] This embodiment implements a two-stage conversion path from outward tilt offset to eccentric bolt angle. The outward tilt offset information is first mapped to a target distance, and then further mapped to an adjustment angle based on the target distance. This avoids the efficiency loss caused by repeated trial adjustments on site, enabling the installation of eccentric bolts quickly, accurately, and in a standardized manner. It significantly improves the first-pass yield rate of outward tilt angles, reduces reliance on operator skill levels, and is suitable for automated assembly line upgrade scenarios.

[0121] In this embodiment, determining the adjustment angle of the eccentric bolt based on the camber offset information includes: acquiring the vehicle's driving information and environmental information within a preset time period; determining the adjustment angle of the eccentric bolt based on the driving information, environmental information, and camber offset information, using a preset model; wherein, the preset model is a pre-trained neural network model, which is used to predict the adjustment angle of the eccentric bolt based on the driving information, environmental information, and camber offset information.

[0122] Specifically, driving information can include, but is not limited to, data characterizing the vehicle's dynamic operating status such as vehicle speed, acceleration, steering frequency, braking frequency, and cumulative mileage. This data can be collected in real time via on-board diagnostics (OBD) or a telematics box and transmitted to a cloud-based data analysis platform via a CAN (Controller Area Network) bus. For example, in urban driving conditions, frequent starts and stops and low-speed cornering can cause the suspension system to experience asymmetrical loads, affecting camber stability; while in high-speed cruising scenarios, continuous lateral wind pressure may cause small but cumulative drift in positioning parameters. Therefore, incorporating driving information can more comprehensively reflect the impact mechanisms of actual use on camber.

[0123] Environmental information can include external factors such as road type, temperature and humidity, altitude, and precipitation. For example, the increased stiffness of rubber bushings in low-temperature environments may lead to slight changes in suspension geometry; slippery or bumpy roads will exacerbate wear and loosening of components, thus affecting the maintenance of assembly precision. Environmental information can be obtained through GPS (Global Positioning System) positioning combined with high-precision map matching, or directly detected by onboard sensors, or supplemented by access from a meteorological service platform interface.

[0124] In this embodiment, the time granularity of driving information and environmental information can be set to a statistical period such as daily, weekly or monthly. For example, a week can be used as a preset statistical period to balance the representativeness and timeliness of the data.

[0125] The preset model is a pre-trained neural network model, which can specifically adopt structures such as MLP (Multi-Layer Perceptron), LSTM (Long Short-Term Memory), or GNN (Graph Neural Network), flexibly selected based on the dimension of the input features and the temporal characteristics of the data. During the model training phase, supervised learning is performed using a complete dataset of historical batches of vehicles. Input variables include standardized feature vectors such as camber offset, average vehicle speed, number of rapid acceleration / deceleration events, steering angle integral value, road surface grade, and ambient temperature. The output is the adjustment angle. In this embodiment, the training process and model architecture of the preset model are not specifically limited.

[0126] The vehicle's current driving information, environmental information, and the latest camber offset information are normalized and then input into a pre-trained preset model. The model's inference output is the recommended adjustment angle. For example, when it is identified that users in a certain area generally drive on winding mountain roads and in low temperatures, the model can automatically increase the compensation angle margin to cope with the combined effects of low-temperature hardening and frequent lateral forces.

[0127] In this embodiment, camber offset information provides an initial deviation benchmark, while driving information and environmental information serve as dynamic supplements. All three are used as input data to drive the preset model to output a precise adjustment angle, thereby improving the accuracy of the adjustment angle determination and effectively enhancing the stability of the overall vehicle assembly quality.

[0128] This application provides an eccentric bolt and a vehicle-based eccentric bolt adjustment method. By setting eccentric slot limit blocks with multiple angles and matching positioning blocks, the installation angle of the eccentric bolt can be precisely adjusted, improving the adjustment efficiency of the eccentric bolt angle. During vehicle operation, by combining camber angle data acquisition and feedback analysis, the camber angle deviation of the vehicle is determined, and the required adjustment angle of the eccentric bolt is determined in a timely manner, so that the camber angle tends to the design median value. This improves the adjustment efficiency and accuracy of the eccentric bolt, effectively enhancing suspension performance and overall vehicle handling stability, while reducing rework rate and production costs.

[0129] Figure 9 A schematic diagram of a vehicle-based eccentric bolt adjustment device is provided as an embodiment of this application, as shown below. Figure 9 As shown, the eccentric bolt adjustment device 90 based on a vehicle provided in this embodiment includes:

[0130] The data acquisition unit 901 is used to acquire the camber angle data of the vehicle within a preset time period;

[0131] The offset determination unit 902 is used to determine the camber offset information of the vehicle based on the camber angle data within a preset time period; wherein, the camber offset information characterizes the degree of offset between the camber angle of the wheel and the preset angle.

[0132] Angle determination unit 903 is used to determine the adjustment angle of the eccentric bolt based on the outward tilt offset information; wherein, the adjustment angle is used to indicate the embedding relationship between the adjustment positioning key and the limit slot.

[0133] In one possible implementation, the offset determination unit 902 is specifically used for:

[0134] Based on the camber angle data within a preset time period, the vehicle's dispersion information is determined; whereby the dispersion information characterizes the degree of dispersion of the camber angle data within the preset time period.

[0135] If the dispersion information meets the preset conditions, the camber offset information of the vehicle is determined based on the camber angle data within the preset time period.

[0136] In one possible implementation, the angle determining unit 903 is specifically used for:

[0137] Based on the preset first correlation, the distance information corresponding to the camber offset information is determined as the target distance; wherein, the preset first correlation represents the correlation between the camber offset information and the distance information, and the distance information represents the distance that the lower control arm needs to move in the preset direction;

[0138] Based on the preset second correlation, the adjustment angle corresponding to the target distance is determined, which is the adjustment angle of the eccentric bolt; wherein, the preset second correlation represents the correlation between distance information and adjustment angle.

[0139] In one possible implementation, the angle determining unit 903 is specifically used for:

[0140] Acquire vehicle driving and environmental information within a preset time period;

[0141] Based on driving information, environmental information, and camber offset information, the adjustment angle of the eccentric bolt is determined using a preset model. The preset model is a pre-trained neural network model used to predict the adjustment angle of the eccentric bolt based on driving information, environmental information, and camber offset information.

[0142] This embodiment provides a vehicle-based eccentric bolt adjustment device that can perform the method provided in the above-described method embodiments. Its implementation principle and technical effects are similar, and will not be described in detail here.

[0143] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 10 As shown, the electronic device 1000 provided in this embodiment includes at least one processor 1001 and a memory 1002. Optionally, the device 1000 further includes a communication component 1003. The processor 1001, memory 1002, and communication component 1003 are connected via a bus 1004.

[0144] In a specific implementation, at least one processor 1001 executes computer execution instructions stored in memory 1002, causing at least one processor 1001 to perform the above-described method.

[0145] The specific implementation process of processor 1001 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0146] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0147] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0148] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0149] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0150] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0151] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0152] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0153] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0154] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0155] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0156] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0157] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0158] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An eccentric bolt, characterized in that, The eccentric bolt includes a bolt body, a positioning block, and an eccentric groove limiting block; Multiple limiting slots are provided on the first target surface of the eccentric slot limiting block, and the limiting slots are arranged at intervals along the circumference of the first target surface and extend radially. A positioning key adapted to the limiting slot is provided on the second target surface of the positioning block; The bolt body is connected to the positioning block.

2. The eccentric bolt according to claim 1, characterized in that, Each limiting slot in the eccentric slot limiting block intersects at a preset point on the first target surface; The positioning key on the positioning block passes through a preset point on the second target surface and extends radially.

3. The eccentric bolt according to claim 1, characterized in that, A handle is provided on the third target surface of the eccentric slot limiting block.

4. The eccentric bolt according to claim 1, characterized in that, The eccentric bolt includes a pre-embedded magnet; The embedded magnet is used to connect the eccentric slot limiting block and the positioning block.

5. The eccentric bolt according to claim 1, characterized in that, A positioning groove is provided on the fourth target surface of the positioning block; The bolt body is provided with a positioning structure; The positioning structure is positioned and installed in the positioning groove.

6. The eccentric bolt according to claim 5, characterized in that, The positioning structure is a hexagonal pan head, and the positioning groove is a hexagonal groove adapted to the hexagonal pan head.

7. A method for adjusting eccentric bolts based on vehicles, characterized in that, The vehicle is equipped with an eccentric bolt as described in any one of claims 1-6, the eccentric bolt comprising a positioning block and an eccentric slot limiting block; a plurality of limiting slots are provided on the first target surface of the eccentric slot limiting block, the limiting slots being arranged at circumferential intervals along the first target surface, and the limiting slots extending radially; a positioning key adapted to the limiting slots is provided on the second target surface of the positioning block; the method includes: Acquire the vehicle's camber angle data within a preset time period; Based on the camber angle data within the preset time period, the camber offset information of the vehicle is determined; wherein, the camber offset information characterizes the degree of deviation between the camber angle of the wheel and the preset angle; Based on the outward tilt offset information, the adjustment angle of the eccentric bolt is determined; wherein, the adjustment angle is used to indicate the embedding relationship between the adjustment positioning key and the limit slot.

8. The method according to claim 7, characterized in that, Based on the camber angle data within the preset time period, determine the camber offset information of the vehicle, including: Based on the camber angle data within the preset time period, the dispersion information of the vehicle is determined; wherein, the dispersion information characterizes the degree of dispersion of the camber angle data within the preset time period; If the dispersion information meets the preset conditions, then the camber offset information of the vehicle is determined based on the camber angle data within the preset time period.

9. The method according to claim 7, characterized in that, Based on the outward tilt offset information, the adjustment angle of the eccentric bolt is determined, including: Based on a preset first correlation, the distance information corresponding to the camber offset information is determined as the target distance; wherein, the preset first correlation represents the correlation between the camber offset information and the distance information, and the distance information represents the distance that the lower control arm needs to move in a preset direction; Based on a preset second correlation, an adjustment angle corresponding to the target distance is determined, which is the adjustment angle of the eccentric bolt; wherein, the preset second correlation represents the correlation between distance information and adjustment angle.

10. The method according to any one of claims 7-9, characterized in that, Based on the outward tilt offset information, the adjustment angle of the eccentric bolt is determined, including: Obtain the vehicle's driving information and environmental information within a preset time period; Based on the driving information, environmental information, and camber offset information, the adjustment angle of the eccentric bolt is determined according to a preset model; wherein, the preset model is a pre-trained neural network model, which is used to predict the adjustment angle of the eccentric bolt based on the driving information, environmental information, and camber offset information.

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