Steering knuckle for light-weight vehicle
By installing a stainless steel bushing and a limiting structure between the bearing and the knuckle body, the problem of abnormal noise caused by bearing loosening in the lightweight steering knuckle was solved, achieving stable bearing connection and maintaining lightweight performance.
Patent Information
- Application Number
- CN202520693123.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-14
AI Technical Summary
The bearings of existing lightweight steering knuckles become loose due to self-rotation and shearing on the aluminum alloy knuckle body, causing abnormal noise.
A stainless steel bushing is installed between the bearing and the joint body. The rotation and shearing of the bearing are restricted by the cooperation of the limiting step and the limiting rib, so as to ensure a stable connection.
It effectively suppresses abnormal noises when the wheels are turning, improves the stability of the bearings and the solidity of the connection, and maintains lightweight performance.
Smart Images
Figure CN223864953U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of vehicle accessories, in particular to a light-weight vehicle steering knuckle. BACKGROUND
[0002] The steering knuckle is an important part of the automobile steering system, which is used for bearing the load of the automobile, supporting and driving the wheel hub to rotate around the kingpin to steer the automobile. The steering knuckle comprises a knuckle body and a wheel hub chuck arranged on the knuckle body. The wheel hub is fixedly connected to the wheel hub chuck to realize the rotational connection with the knuckle body. In order to ensure the stability and smoothness of the rotational connection between the wheel hub chuck and the knuckle body, the wheel hub chuck is arranged on the knuckle body through a bearing. In the prior art, the bearing is generally press-fitted into the mounting hole of the knuckle body through interference fit. However, since the knuckle body of the light-weight steering knuckle is made of aluminum alloy, the bearing will shear the inner wall of the knuckle body when it is under stress, which will cause the interference fit between the bearing and the knuckle body to loosen, and further cause the connection between the wheel hub chuck and the knuckle body to loosen, thereby producing abnormal noise during the steering of the automobile.
[0003] In view of the above problems, the utility model is improved. CONTENT OF THE UTILITY MODEL
[0004] The utility model provides a light-weight vehicle steering knuckle, which solves the above problems existing in the prior art during use.
[0005] The technical scheme of the utility model is as follows:
[0006] A light-weight vehicle steering knuckle comprises a knuckle body, a bearing and a wheel hub chuck. The knuckle body is provided with a mounting hole. The bearing is arranged on the center sleeve of the wheel hub chuck. The utility model further comprises a bushing made of stainless steel and having an outer diameter consistent with the inner diameter of the mounting hole. An annular first limiting step is formed on the inner wall of the mounting hole. An annular second limiting step is formed on the outer wall of the bushing. The bushing passes through the mounting hole so that the first limiting step and the second limiting step abut each other. The end of the bushing that passes out of the mounting hole is bent to form a first limiting part in the form of a ring abutting the port of the mounting hole. The bearing is arranged in the bushing.
[0007] Preferably, the end of the bushing is provided with an annular second limiting part. The bearing is inserted into the bushing so that one end of the outer ring of the bearing abuts the second limiting part. A retaining ring is welded to the bushing and abuts the other end of the outer ring of the bearing.
[0008] Preferably, an annular third limiting step is formed on the center sleeve of the wheel hub chuck. The center sleeve of the wheel hub chuck passes into the bearing so that one end of the inner ring of the bearing abuts the third limiting step. The end of the center sleeve of the wheel hub chuck that passes out of the bearing is bent to form a third limiting part in the form of a ring abutting the other end of the inner ring of the bearing.
[0009] Preferably, a plurality of first limiting ribs extending along the axial direction of the bushing are formed on the outer wall of the bushing, a plurality of first limiting grooves matched with the first limiting ribs are formed on the inner wall of the mounting hole, and the first limiting ribs are one-to-one retained in the first limiting grooves.
[0010] Preferably, a plurality of second limiting ribs extending along the axial direction of the bushing are formed on the inner wall of the bushing, a plurality of second limiting grooves matched with the second limiting ribs are formed on the outer wall of the bearing outer ring, and the second limiting ribs are one-to-one retained in the second limiting grooves.
[0011] Preferably, the joint body is hollow in the inner cavity and is made of aluminum alloy.
[0012] Preferably, a plurality of reinforcing ribs are formed on the outer wall of the kingpin connecting arm of the joint body.
[0013] In summary, the bushing is located between the bearing and the joint body, the rotation of the bearing under stress is limited in the bushing to avoid the bearing from shearing the joint body, the bushing made of stainless steel has high strength and can resist the shearing force of the bearing, the bearing is stably retained in the mounting hole and cannot produce radial deviation and axial movement, and the abnormal sound during the turning of the wheel is effectively inhibited. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0015] Figure 1 It is a structural schematic diagram of the present application;
[0016] Figure 2 It is a sectional view schematic diagram of the present application;
[0017] Figure 3 It is Figure 2 It is an enlarged schematic diagram of A in the middle;
[0018] Figure 4 It is a structural schematic diagram of the bushing and the bearing in the present application.
[0019] In the figure: 1, knuckle body; 11, mounting hole; 12, first limiting step; 13, first limiting groove; 14, reinforcing rib; 15, kingpin connecting arm; 2, bearing; 21, second limiting groove; 3, wheel hub chuck; 31, center sleeve; 32, third limiting step; 33, third limiting part; 4, bushing; 41, second limiting step; 42, first limiting part; 43, second limiting part; 44, first limiting rib; 45, second limiting rib; 5, check ring. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Figures 1-4 It is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0021] As shown in the figure, a lightweight vehicle steering knuckle includes a knuckle body 1, a bearing 2 and a wheel hub chuck 3, the knuckle body 1 is formed with a mounting hole 11, the bearing 2 is arranged on the center sleeve 31 of the wheel hub chuck 3, and a bushing 4 made of stainless steel and having an outer diameter consistent with the inner diameter of the mounting hole 11 is further included, an annular first limiting step 12 is formed on the inner wall of the mounting hole 11, an annular second limiting step 41 is formed on the outer wall of the bushing 4, the bushing 4 passes through the mounting hole 11 so that the first limiting step 12 and the second limiting step 41 abut, the end of the bushing 4 that passes out of the mounting hole 11 is bent to form an annular first limiting part 42 abutting the port of the mounting hole 11, and the bearing 2 is arranged in the bushing 4.
[0022] Specifically, the bearing 2 is arranged in the bushing 4 in the following structure: an annular second limiting part 43 is formed at the end of the bushing 4, the bearing 2 is inserted into the bushing 4 so that one end of the outer ring of the bearing 2 abuts the second limiting part 43, and a check ring 5 is welded in the bushing 4 and abuts the other end of the outer ring of the bearing 2.
[0023] Specifically, the bearing 2 is arranged on the center sleeve 31 of the wheel hub chuck 3 in the following structure: an annular third limiting step 32 is formed on the center sleeve 31 of the wheel hub chuck 3, the center sleeve 31 of the wheel hub chuck 3 passes into the bearing 2 so that one end of the inner ring of the bearing 2 abuts the third limiting step 32, and the end of the center sleeve 31 of the wheel hub chuck 3 that passes out of the bearing 2 is bent to form an annular third limiting part 33 abutting the other end of the inner ring of the bearing 2.
[0024] In the above structure, when the bearing 2 is assembled in the mounting hole 11 of the joint body 1, the bushing 4 is inserted into the mounting hole 11 from the inner side end of the mounting hole 11 and is in close contact with the inner wall of the mounting hole 11, the second limiting step 41 is abutted against the first limiting step 12, the end of the bushing 4 is inserted out of the mounting hole 11, the end of the bushing 4 inserted out of the mounting hole 11 is bent to form the first limiting portion 42 abutting against the outer side end of the mounting hole 11, the axial movement of the bushing 4 relative to the joint body 1 is limited by the cooperation of the second limiting step 41 and the first limiting portion 42, thereby achieving the fixed arrangement of the bushing 4 in the mounting hole 11, then the bearing 2 is pressed into the bushing 4 from the outer side end of the bushing 4, the outer ring of the bearing 2 is abutted against the second limiting portion 43, after the stop ring 5 is welded to the outer ring of the bearing 2, the axial movement of the bearing 2 relative to the bushing 4 is limited by the cooperation of the second limiting portion 43 and the stop ring 5, thereby achieving the fixed arrangement of the bearing 2 in the bushing 4, then the center sleeve 31 of the hub chuck 3 is pressed into the bearing 2 from the outer side end of the bearing 2, the inner ring of the bearing 2 is abutted against the third limiting step 32, the end of the center sleeve 31 is inserted out of the bearing 2, after the end of the center sleeve 31 inserted out of the bearing 2 is bent to form the third limiting portion 33 abutting against the inner ring of the bearing 2, the axial movement of the center sleeve 31 relative to the bearing 2 is limited by the cooperation of the third limiting step 32 and the third limiting portion 33, thereby achieving the fixed arrangement of the hub chuck 3 on the bearing 2, after the hub chuck 3 is assembled on the joint body 1 by the above structure and mode, the bushing 4 is located between the bearing 2 and the joint body 1, the rotation of the bearing 2 possibly caused by the force is limited in the bushing 4, thereby avoiding the shearing of the joint body 1 by the bearing 2, and the bushing 4 made of stainless steel has high strength and can resist the shearing force of the bearing 2, thereby stably keeping the bearing 2 in the mounting hole 11 and avoiding the radial deviation and axial movement, thereby effectively inhibiting the abnormal sound during the steering of the wheel.
[0025] On the basis of the above structure, a plurality of first limiting ribs 44 extending along the axial direction of the bushing 4 are formed on the outer wall of the bushing 4, a plurality of first limiting grooves 13 matched with the first limiting ribs 44 are formed on the inner wall of the mounting hole 11, and the first limiting ribs 44 are one-to-one kept in the first limiting grooves 13, the first limiting ribs 44 are inserted into and kept in the first limiting grooves 13 at the same time when the bushing 4 is inserted into the mounting hole 11, the rotation of the bushing 4 relative to the joint body 1 is limited by the cooperation of the first limiting ribs 44 and the first limiting grooves 13, thereby preventing the shearing of the inner wall of the mounting hole 11 caused by the rotation of the bushing 4, and thereby enhancing the stability of the bushing 4 arranged in the mounting hole 11 and limiting the abnormal sound during the steering of the wheel.
[0026] On the basis of the above structure, the inner wall of the bushing 4 is formed with a plurality of second limiting ribs 45 extending along the axial direction of the bushing 4, the outer wall of the outer ring of the bearing 2 is formed with a plurality of second limiting grooves 21 matched with the second limiting ribs 45, the second limiting ribs 45 are one-to-one retained in the second limiting grooves 21, the second limiting ribs 45 are inserted into and retained in the second limiting grooves 21 while the bearing 2 is pressed into the bushing 4, the rotation of the outer ring of the bearing 2 relative to the bushing 4 is limited by the cooperation of the second limiting ribs 45 and the second limiting grooves 21, the shearing between the outer ring of the bearing 2 and the inner wall of the bushing 4 is prevented, and thus the stability of the bearing 2 arranged in the bushing 4 is enhanced, and the abnormal sound during the wheel steering is effectively inhibited.
[0027] On the basis of the above structure, the knuckle body 1 is hollow in the cavity and is made of aluminum alloy, so that the weight of the knuckle body 1 is reduced and the knuckle has better lightweight performance.
[0028] On the basis of the above structure, the outer wall of the kingpin connecting arm 15 of the knuckle body 1 is formed with a plurality of reinforcing ribs 14, the kingpin connecting arm 15 is used for connecting the kingpin of the frame and supporting the hub, and the strength of the kingpin connecting arm 15 is enhanced by the action of the reinforcing ribs 14 without excessively affecting the lightweight performance of the knuckle, so that the stability of the connection between the knuckle and the kingpin of the frame is ensured.
[0029] The above only describes preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A lightweight automotive steering knuckle, comprising a knuckle body (1), a bearing (2), and a hub chuck (3), wherein the knuckle body (1) has a mounting hole (11), and the bearing (2) is disposed on the central sleeve (31) of the hub chuck (3), characterized in that: It also includes a stainless steel bushing (4) with an outer diameter that matches the inner diameter of the mounting hole (11). A first annular limiting step (12) is formed on the inner wall of the mounting hole (11), and a second annular limiting step (41) is formed on the outer wall of the bushing (4). The bushing (4) passes through the mounting hole (11) so that the first limiting step (12) and the second limiting step (41) abut against each other. The end of the bushing (4) that protrudes from the mounting hole (11) is bent to form a first annular limiting part (42) that abuts against the port of the mounting hole (11). The bearing (2) is disposed inside the bushing (4).
2. The lightweight automotive steering knuckle according to claim 1, characterized in that: The bushing (4) has an annular second limiting part (43) at its end. The bearing (2) is inserted into the bushing (4) so that one end of the outer ring of the bearing (2) abuts against the second limiting part (43). A retaining ring (5) is welded into the bushing (4) to abut against the other end of the outer ring of the bearing (2).
3. The lightweight automotive steering knuckle according to claim 2, characterized in that: A ring-shaped third limiting step (32) is formed on the central sleeve (31) of the hub chuck (3). The central sleeve (31) of the hub chuck (3) is inserted into the bearing (2) so that one end of the inner ring of the bearing (2) abuts against the third limiting step (32). The end of the central sleeve (31) of the hub chuck (3) that protrudes from the bearing (2) is bent to form a ring-shaped third limiting part (33) that abuts against the other end of the inner ring of the bearing (2).
4. The lightweight automotive steering knuckle according to claim 3, characterized in that: The outer wall of the bushing (4) has a plurality of first limiting ribs (44) extending axially along the bushing (4), and the inner wall of the mounting hole (11) has a plurality of first limiting grooves (13) matching the first limiting ribs (44), and the plurality of first limiting ribs (44) are held in the plurality of first limiting grooves (13).
5. The lightweight automotive steering knuckle according to claim 4, characterized in that: The inner wall of the bushing (4) has a plurality of second limiting ribs (45) extending along the axial direction of the bushing (4), and the outer wall of the outer ring of the bearing (2) has a plurality of second limiting grooves (21) matching the second limiting ribs (45), and the plurality of second limiting ribs (45) are held in the plurality of second limiting grooves (21).
6. The lightweight automotive steering knuckle according to claim 5, characterized in that: The segment (1) is cast from aluminum alloy and has a hollow inner cavity.
7. The lightweight automotive steering knuckle according to claim 6, characterized in that: Several reinforcing ribs (14) are formed on the outer wall of the main pin connecting arm (15) of the segment (1).