Eccentric wheel of steering system

Abstract

The utility model discloses a steering system eccentric wheel, and particularly relates to the technical field of steering system eccentric wheels, the steering system eccentric wheel comprises a supporting disc, an eccentric supporting assembly is arranged on the supporting disc, and the eccentric supporting assembly comprises a mounting disc arranged at the top of the supporting disc. According to the utility model, parts such as the mounting disc and the limiting sleeve can be driven to rotate around the axis of the supporting disc by detaching the positioning pin or the bolt in the limiting hole, so that large-range coarse adjustment is realized; and the bolts matched with the adjusting grooves and the positioning holes are loosened, so that the bolts move along the arc-shaped adjusting grooves, and small-range fine adjustment can be realized. According to the adjusting mode, the problem that the angle of an existing eccentric wheel cannot be adjusted is effectively solved, the differential requirements of steering systems of different vehicle types for the eccentric angle can be met, the purchase and inventory cost of parts is reduced, after the steering system is abraded, the transmission error can be compensated by adjusting the eccentric angle, and the transmission efficiency is improved. And the steering precision can be recovered without replacing parts.

Description

Technical Field

[0001] This utility model relates to the field of steering system eccentric wheel technology, and more specifically, to steering system eccentric wheel. Background Technology

[0002] As a core control component in vehicle operation, the steering system directly affects driving safety and comfort. The eccentric wheel, a key transmission component within the steering system, plays a decisive role in the overall performance of the system through its structural design and functional performance. The core characteristic of the eccentric wheel lies in the pre-set offset between its rotation center and geometric center. In practical applications, it requires precise coordination with components such as the steering shaft and rack. Through its rotation around its center of rotation, it utilizes its eccentric characteristics to drive a driven component (such as the rack) to produce reciprocating linear motion or oscillation at a specific angle, thereby controlling the vehicle's steering trajectory.

[0003] However, in existing technologies, most steering system eccentric wheels adopt an integrated fixed structure design, with their eccentric angle fixed during the manufacturing process, making it impossible to adjust according to the needs of actual usage scenarios. This fixed structure has significant limitations: on the one hand, different vehicle models have different requirements for transmission travel and steering sensitivity in their steering systems, and eccentric wheels with fixed eccentric angles are difficult to adapt to the steering systems of various vehicle models, resulting in poor parts interchangeability and increasing procurement costs and inventory pressure for automakers; on the other hand, even for the same vehicle model, during long-term use, steering system components may experience problems such as increased transmission clearance and decreased steering accuracy due to wear, aging, and other factors. If the transmission error could be compensated by adjusting the eccentric angle of the eccentric wheel, the service life of the steering system could be effectively extended. However, existing fixed-structure eccentric wheels cannot achieve this function, and the problem can only be solved by replacing the entire eccentric wheel or related transmission components, which not only increases maintenance costs but also reduces vehicle utilization efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an eccentric wheel for a steering system, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a steering system eccentric wheel, including a support plate on which an eccentric support component is provided;

[0006] The eccentric support assembly includes a mounting plate disposed on the top of the support plate, a limiting sleeve fixedly disposed on the mounting plate, an eccentric cavity opened in the middle of the limiting sleeve, a rotating shaft sleeve rotatably connected inside the eccentric cavity, and an extension ring fixedly disposed at the bottom end of the rotating shaft sleeve.

[0007] The bottom of the mounting plate is fixedly provided with a boss, and the support plate has a through hole, with one end of the limiting sleeve fixed to the boss.

[0008] Optionally, in a possible implementation, the boss has a mounting groove in the middle, a limiting rib is embedded in the mounting groove, the limiting rib is sleeved on the outside of the extension ring, the boss has several limiting holes through it, the boss is located in the through hole, the top of the mounting plate has several adjusting grooves through it, and each adjusting groove is distributed on the outside of the limiting sleeve, the outside of the through hole has several positioning holes, and each positioning hole is through it on the support plate, the positioning holes are located at the bottom of the adjusting grooves, the mounting plate, the support plate and the limiting sleeve are all in the same axial direction, and the eccentric cavity is eccentrically set;

[0009] The technical effects and advantages of this utility model are as follows:

[0010] By removing the locating pins or bolts inside the limiting holes, components such as the mounting plate and limiting sleeve can be rotated around the axis of the support plate, achieving a large range of coarse adjustments. Loosening the bolts that mate with the adjusting grooves and locating holes allows the bolts to move along the arc-shaped adjusting grooves, enabling a small range of fine adjustments. This adjustment method effectively solves the problem that existing eccentric wheels cannot adjust their angles. It not only adapts to the different requirements of steering systems for eccentric angles in different vehicle models, reducing parts procurement and inventory costs, but also compensates for transmission errors by adjusting the eccentric angle after the steering system wears down, restoring steering accuracy without replacing parts and extending the service life of the steering system.

[0011] The precise fit between the boss and the through hole of the support plate provides stable support and positioning for the mounting plate, further enhancing structural stability. At the same time, a limiting rib is embedded in the mounting groove of the boss and fitted onto the outside of the extension ring of the rotating shaft sleeve. The limiting rib is made of wear-resistant alloy material, which not only guides the rotation of the extension ring and prevents it from deviating, but also reduces the direct friction between the extension ring and the boss, reducing wear and tear, extending the service life of parts, ensuring the long-term stable operation of the steering system, and reducing maintenance frequency and costs. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0013] Figure 1 This is a front view of the overall structure of this utility model.

[0014] Figure 2 This is a top view of the overall structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the support plate of this utility model.

[0016] Figure 4 This is a schematic diagram of the mounting plate, boss, rotating bushing, extension ring, and limiting rib ring of this utility model.

[0017] The attached diagram is labeled as follows: 1. Support plate; 2. Mounting plate; 3. Limiting sleeve; 4. Rotary shaft sleeve; 5. Extension ring; 6. Limiting rib ring; 7. Mounting groove; 8. Eccentric cavity; 9. Boss; 10. Limiting hole; 11. Adjusting groove; 12. Positioning hole; 13. Through hole. Detailed Implementation

[0018] 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.

[0019] This embodiment discloses an eccentric wheel for a steering system, which aims to solve the problem that the eccentric wheel of the steering system in the prior art is fixed and cannot be adjusted according to actual use needs, resulting in limitations in use under different working conditions.

[0020] Specifically, the eccentric wheel of the steering system includes a support plate 1. The support plate 1 serves as the basic support component for the entire eccentric wheel, connecting with other fixed structures of the steering system and providing a stable reference for the subsequent installation of various components. A through hole 13 is provided through the support plate 1 to accommodate the boss 9. Several positioning holes 12 are distributed on the outer side of the through hole 13, each extending through the support plate 1. The positioning holes 12 can be used with bolts or other connecting parts to achieve precise positioning and fixation of the support plate 1 with other components of the steering system.

[0021] An eccentric support assembly is provided on the support plate 1. This eccentric support assembly includes a mounting plate 2 located on top of the support plate 1. The mounting plate 2 and the support plate 1 are arranged vertically and correspondingly, and the mounting plate 2, the support plate 1, and the subsequent limiting sleeve 3 are all in the same axial direction, ensuring the coaxiality of the overall structure and reducing shaking and wear during use. A boss 9 is fixedly provided at the bottom of the mounting plate 2. The boss 9 is an integral structure with the mounting plate 2 and is located inside the through hole 13. The outer diameter of the boss 9 matches the inner diameter of the through hole 13, allowing the boss 9 to be stably placed within the through hole 13 and also providing positioning for the mounting plate 2 on the support plate 1.

[0022] Several limiting holes 10 are formed through the boss 9. The limiting holes 10 can be used to insert positioning pins or bolts. When it is necessary to fix the relative position of the mounting plate 2 and the support plate 1, the positioning pins or bolts can be passed through the limiting holes 10 and connected to the support plate 1 to fix the two. When it is necessary to adjust the eccentric angle, the positioning pins or bolts can be removed to rotate the mounting plate 2 and adjust its position relative to the support plate 1. In addition, a mounting groove 7 is formed in the middle of the boss 9. A limiting rib 6 is embedded in the mounting groove 7. The limiting rib 6 is made of wear-resistant alloy material, which can effectively improve its service life. At the same time, the limiting rib 6 is sleeved on the outside of the subsequent extension ring 5 to guide and limit the rotation of the extension ring 5 and prevent the extension ring 5 from deviating during rotation.

[0023] A limiting sleeve 3 is fixedly installed on the mounting plate 2. The limiting sleeve 3 and the mounting plate 2 are integrally cast to ensure connection strength. One end of the limiting sleeve 3 is fixed to the boss 9, further enhancing the connection stability between the limiting sleeve 3, the mounting plate 2, and the boss 9. An eccentric cavity 8 is provided in the middle of the limiting sleeve 3. The eccentric cavity 8 is eccentrically positioned, meaning that the central axis of the eccentric cavity 8 does not coincide with the central axis of the limiting sleeve 3. This is the core structure for realizing the eccentric wheel function. A rotating shaft sleeve 4 is rotatably connected inside the eccentric cavity 8. The outer diameter of the rotating shaft sleeve 4 is adapted to the inner diameter of the eccentric cavity 8, allowing the rotating shaft sleeve 4 to rotate flexibly within the eccentric cavity 8. The rotating shaft sleeve 4 is used to connect to the steering shaft in the steering system. When the steering shaft drives the rotating shaft sleeve 4 to rotate, due to the eccentric setting of the eccentric cavity 8, it will drive the limiting sleeve 3, the mounting plate 2, and other components to produce eccentric motion, thereby driving the driven components in the steering system, such as the rack, to reciprocate or oscillate.

[0024] An extension ring 5 is fixedly installed at the bottom end of the rotating sleeve 4. The extension ring 5 and the rotating sleeve 4 are an integral structure. A limiting rib 6 is sleeved on the outer side of the extension ring 5. As mentioned above, the limiting rib 6 guides the rotation of the extension ring 5. At the same time, the extension ring 5 also increases the contact area between the rotating sleeve 4 and the boss 9, improving the stability of the rotating sleeve 4 during rotation. In addition, several adjustment grooves 11 are opened through the top of the mounting plate 2. Each adjustment groove 11 is distributed on the outer side of the limiting sleeve 3. The adjustment grooves 11 have an arc-shaped structure, and their opening direction is consistent with the circumferential direction of the mounting plate 2. The adjustment grooves 11 are used to cooperate with connecting parts such as bolts. When it is necessary to fine-tune the angle of the mounting plate 2, the bolt can be passed through the adjustment groove 11 and connected to the positioning hole 12 on the support plate 1. The positioning hole 12 is located at the bottom of the adjustment groove 11. By loosening the bolt, the bolt moves along the arc trajectory in the adjustment groove 11, which can drive the mounting plate 2 to rotate, thereby achieving fine adjustment of the eccentric angle. After adjustment, tightening the bolt will fix the position of the mounting plate 2.

[0025] The specific working principle is as follows: When installing the eccentric wheel into the steering system, firstly, the support plate 1 is fixed in the designated position of the steering system through the positioning hole 12 on the support plate 1 and the bolts; then, the steering shaft is inserted into the rotating shaft sleeve 4, and the steering shaft and the rotating shaft sleeve 4 are fixedly connected by key connection or tight fit. When it is necessary to adjust the eccentric angle of the eccentric wheel, if a larger angle adjustment is required, the positioning pin or bolt in the upper limit hole 10 of the boss 9 can be removed first, and then the mounting plate 2 can be rotated, so that the mounting plate 2 drives the limiting sleeve 3, rotating shaft sleeve 4 and other components to rotate around the axis of the support plate 1. After rotating to the required eccentric angle, the positioning pin or bolt is reinserted into the limiting hole 10 and fixed to complete the coarse adjustment; if a fine adjustment is required, the bolt passing through the adjustment groove 11 on the mounting plate 2 and the positioning hole 12 on the support plate 1 can be loosened, so that the bolt moves slightly along the arc trajectory in the adjustment groove 11, thereby driving the mounting plate 2 to rotate slightly, so as to achieve fine adjustment of the eccentric angle. After the adjustment is in place, the bolt can be tightened. During the operation of the steering system, the steering shaft drives the rotating shaft sleeve 4 to rotate within the eccentric cavity 8 of the limiting sleeve 3. Due to the eccentric setting of the eccentric cavity 8, the rotating shaft sleeve 4 will drive the limiting sleeve 3 and the mounting plate 2 to generate eccentric motion when rotating. The mounting plate 2 achieves stable support through the cooperation of the boss 9 and the support plate 1. At the same time, the limiting rib ring 6 guides the rotation of the extension ring 5 to ensure the stability of the overall structural movement. Finally, the eccentric motion drives the driven component in the steering system, such as the rack, to reciprocate or swing, thereby realizing the steering function of the vehicle.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An eccentric wheel for a steering system, including a support disc (1), characterized in that: An eccentric support assembly is provided on the support plate (1); The eccentric support assembly includes a mounting plate (2) set on the top of the support plate (1), a limiting sleeve (3) fixedly set on the mounting plate (2), an eccentric cavity (8) opened in the middle of the limiting sleeve (3), a rotating shaft sleeve (4) rotatably connected in the eccentric cavity (8), and an extension ring (5) fixedly set at the bottom end of the rotating shaft sleeve (4). The bottom of the mounting plate (2) is fixedly provided with a boss (9), and the support plate (1) is provided with a through hole (13), and one end of the limiting sleeve (3) is fixed on the boss (9).

2. The eccentric wheel of the steering system according to claim 1, characterized in that: The boss (9) has a mounting groove (7) in the middle, and a limiting rib ring (6) is embedded in the mounting groove (7). The limiting rib ring (6) is sleeved on the outside of the extension ring (5).

3. The eccentric wheel of the steering system according to claim 1, characterized in that: The boss (9) has several limiting holes (10) through it, and the boss (9) is located inside the through hole (13).

4. The eccentric wheel of the steering system according to claim 1, characterized in that: The top of the mounting plate (2) is provided with several adjustment slots (11), and each adjustment slot (11) is distributed on the outside of the limiting sleeve (3).

5. The eccentric wheel of the steering system according to claim 4, characterized in that: A number of positioning holes (12) are distributed on the outer side of the through hole (13), and each of the positioning holes (12) is opened through the support plate (1).

6. The eccentric wheel of the steering system according to claim 5, characterized in that: The positioning hole (12) is located at the bottom of the adjustment groove (11), the mounting plate (2), the support plate (1) and the limiting sleeve (3) are all on the same axis, and the eccentric cavity (8) is eccentrically set.

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