Steering assembly and vehicle

Abstract

The steering assembly comprises a hub bearing, a steering knuckle and a plurality of fasteners, the hub bearing comprises a first connecting face, the first connecting face comprises a plurality of connecting lugs which are arranged at intervals, the steering knuckle comprises a second connecting face, the second connecting face comprises a plurality of connecting parts, the connecting parts correspond to the connecting lugs one to one, and the fasteners are arranged on the connecting parts. The fasteners are connected with the connecting lugs and the connecting parts in a one-to-one correspondence mode so that the hub bearing can be fixedly connected with the steering knuckle, the first connecting face and the second connecting face are in contact with the connecting parts only through the connecting lugs, and the hub bearing and the steering knuckle are in contact with the connecting parts only through the connecting lugs and are fixedly connected. The contact area between the hub bearing and the steering knuckle is reduced, and the steering abnormal sound generated by twisting deformation between the hub bearing and the steering knuckle during steering of a vehicle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steering knuckles, in particular to a steering assembly and a vehicle. Background Art

[0002] A vehicle effectively transmits the power of a transmission shaft to a wheel through a wheel hub bearing to ensure smooth power transmission, and the wheel can rotate with the rotation of a steering knuckle connected to the wheel hub bearing to achieve vehicle steering. In the prior art, since the steering knuckle is subjected to axial torsional load during vehicle steering and causes rubbing deformation, there is a problem that steering abnormal noise is likely to occur between the steering knuckle and the wheel hub bearing. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a steering assembly and a vehicle to solve the problem that since the steering knuckle is subjected to axial torsional load during vehicle steering and causes rubbing deformation, there is a problem that steering abnormal noise is likely to occur between the steering knuckle and the wheel hub bearing.

[0004] To achieve the purpose of the utility model, the following technical solutions are provided:

[0005] In a first aspect, the utility model provides a steering assembly, including: a wheel hub bearing, including a first connection surface, the first connection surface including a plurality of connection ears arranged at intervals; a steering knuckle, including a second connection surface, the second connection surface including a plurality of connection parts, the plurality of connection parts corresponding to the plurality of connection ears one by one; a plurality of fasteners, the plurality of fasteners being connected to the plurality of connection ears and the plurality of connection parts one by one to connect and fix the wheel hub bearing and the steering knuckle; wherein, the first connection surface and the second connection surface are in contact only through the plurality of connection ears and the plurality of connection parts.

[0006] In an implementation manner, the surface roughness of the first connection surface and / or the second connection surface is Ra, satisfying: 1μm ≤ Ra ≤ 3μm.

[0007] In an implementation manner, the first connection surface and / or the second connection surface is provided with textures, and the shape of the textures is at least one of the following: polygon, circle, and ellipse.

[0008] In one embodiment, a plurality of first avoidance grooves are formed in the first connection surface. The first avoidance grooves are disposed between two adjacent connection ears. The plurality of first avoidance grooves are all recessed with respect to the first connection surface, and the side walls of the first avoidance grooves are connected to the top surfaces of the adjacent connection ears; and / or, a plurality of second avoidance grooves are formed in the second connection surface. The second avoidance grooves are disposed between two adjacent connection portions. The plurality of second avoidance grooves are all recessed with respect to the second connection surface, and the side walls of the second avoidance grooves are connected to the top surfaces of the adjacent connection portions.

[0009] In one embodiment, the depth of the first avoidance groove and / or the second avoidance groove is H, satisfying: 0.4 mm ≤ H ≤ 0.6 mm.

[0010] In one embodiment, the first avoidance groove and / or the second avoidance groove is in a flared shape.

[0011] In one embodiment, the plurality of connection portions and the plurality of second avoidance grooves are arranged in axial symmetry.

[0012] In one embodiment, the plurality of second avoidance grooves include a first sub-avoidance groove and a second sub-avoidance groove. The first sub-avoidance groove and the second sub-avoidance groove are respectively disposed at two ends of the connection portion in the circumferential direction. The dimension of the first sub-avoidance groove in the circumferential direction is greater than or less than the dimension of the second sub-avoidance groove in the circumferential direction.

[0013] In one embodiment, the first sub-avoidance groove includes a first side wall and a second side wall. The first side wall and the second side wall are oppositely disposed in a first direction. The first side wall and the second side wall both extend in a second direction. The first direction and the second direction intersect.

[0014] In one embodiment, the distance between the first side wall and the second side wall in the first direction is A, satisfying: 21.7 mm ≤ A ≤ 22.7 mm.

[0015] In one embodiment, the first sub-avoidance groove further includes a third side wall and a fourth side wall. The third side wall and the fourth side wall are oppositely disposed in the first direction. The third side wall is connected to the first side wall, and the fourth side wall is connected to the second side wall; from near the first side wall to away from the first side wall, the distance between the third side wall and the fourth side wall in the first direction gradually increases.

[0016] In one embodiment, the second sub-avoidance groove includes a fifth side wall and a sixth side wall. The fifth side wall and the sixth side wall both extend in a straight line. The included angle between the fifth side wall and the sixth side wall is B, satisfying: 69.5° ≤ B ≤ 70.5°.

[0017] In one implementation, there are at least two second sub-avoidance grooves, and the at least two second sub-avoidance grooves are respectively arranged on both sides of the first sub-avoidance groove in the first direction.

[0018] In one implementation, the plurality of second avoidance grooves further include a third sub-avoidance groove. The third sub-avoidance groove and the second sub-avoidance groove are respectively arranged at two ends of the connecting portion in the circumferential direction, and the third sub-avoidance groove is oppositely arranged with the first sub-avoidance groove in the second direction. The sizes of the first sub-avoidance groove, the second sub-avoidance groove, and the third sub-avoidance groove in the circumferential direction are all unequal.

[0019] In one implementation, the second sub-avoidance groove includes a seventh side wall and an eighth side wall. Both the seventh side wall and the eighth side wall extend along the second direction. The distance between the seventh side wall and the eighth side wall in the first direction is C, satisfying: 41.7 mm ≤ C ≤ 42.7 mm, and the first direction intersects with the second direction.

[0020] In a second aspect, the present invention further provides a vehicle, including the steering assembly according to any one of the implementations in the first aspect.

[0021] By setting that the first connection surface and the second connection surface only contact through a plurality of connection ears and a plurality of connection portions, the hub bearing and the steering knuckle only contact and are fixedly connected through the connection ears and the connection portions, reducing the contact area between the hub bearing and the steering knuckle, and reducing the steering abnormal noise generated due to rubbing deformation between the hub bearing and the steering knuckle when the vehicle steers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is an exploded structure diagram of a steering assembly of an embodiment;

[0024] Figure 2 is a front view of a hub bearing of an embodiment;

[0025] Figure 3 is a front view of a steering knuckle of an embodiment;

[0026] Figure 4 is Figure 3 a partial enlarged view of part Ⅰ in

[0027] Description of the reference numerals in the drawings:

[0028] 100 - Steering assembly;

[0029] 10 - Knuckle, 11 - Connecting part, 111 - First mounting hole, 112 - Texture, 12 - Second relief groove, 121 - First sub - relief groove, 1211 - First side wall, 1212 - Second side wall, 1213 - Third side wall, 1214 - Fourth side wall, 122 - Second sub - relief groove, 1221 - Fifth side wall, 1222 - Sixth side wall, 123 - Third sub - relief groove, 1231 - Seventh side wall, 1232 - Eighth side wall, 13 - Knuckle body, 131 - First connection port, 132 - Second connection port, 133 - First surface, 14 - First connecting arm, 15 - Second connecting arm, 16 - Mounting seat, 161 - First arc surface, 162 - Second arc surface, 163 - Third arc surface, 164 - Base, 17 - Through hole, 18 - Second connection surface;

[0030] 20 - Wheel hub bearing, 21 - Connecting ear, 211 - Second mounting hole, 22 - Outer ring, 23 - Inner ring, 24 - Outer ring flange, 25 - First connection surface, 26 - First relief groove, 261 - Fourth sub - relief groove, 262 - Fifth sub - relief groove, 263 - Sixth sub - relief groove;

[0031] 30 - Fastener;

[0032] 40 - Steering tie rod;

[0033] 50 - Spacer;

[0034] X - Third direction, Y - First direction, Z - Second direction. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0036] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0037] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meanings as those commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the description of this utility model in the specification are only for the purpose of describing specific embodiments, and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more of the related listed items.

[0038] The following will, with reference to the accompanying drawings, elaborate on some embodiments of this utility model. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0039] Please refer to Figure 1 , this utility model provides a vehicle, including a steering assembly 100 in the embodiments of this utility model. Optionally, the vehicle can be a fuel vehicle, an electric vehicle, or a hybrid vehicle, without limitation. The steering assembly 100 in the embodiments of this utility model is applied to the braking system of the vehicle, and power is transmitted through the steering assembly 100 to the wheels (not shown) to drive the vehicle to travel, and the steering assembly 100 rotates to steer the vehicle. The vehicle provided by this utility model, by adopting the steering assembly 100 in the embodiments of this utility model, realizes the power transmission to the wheels to drive the vehicle to travel, and can realize the vehicle steering through the rotation of the steering assembly 100, and at the same time, no abnormal steering noise is generated during the vehicle steering process.

[0040] Please refer to Figures 1 to 3 , this utility model also provides a steering assembly 100. The steering assembly 100 includes a hub bearing 20, a steering knuckle 10, and a plurality of fasteners 30. The hub bearing 20 includes a first connection surface 25. The first connection surface 25 includes a plurality of connection lugs 21 arranged at intervals. The steering knuckle 10 includes a second connection surface 18. The second connection surface 18 includes a plurality of connection parts 11. The plurality of connection parts 11 correspond to the plurality of connection lugs 21 one by one. The plurality of fasteners 30 are connected to the plurality of connection lugs 21 and the plurality of connection parts 11 one by one to connect and fix the hub bearing 20 and the steering knuckle 10. Among them, the first connection surface 25 and the second connection surface 18 are in contact only through the plurality of connection lugs 21 and the plurality of connection parts 11.

[0041] Optionally, please refer to Figure 1 and Figure 2 , the hub bearing 20 further includes an outer ring 22, an inner ring 23, and an outer ring flange 24. The outer ring 22 is sleeved on the inner ring 23 and is rotatably connected to the inner ring 23. The outer ring flange 24 is connected and fixed to the inner ring 23 and is located on the side of the inner ring 23 facing away from the steering knuckle 10. The connection lugs 21 are connected to the outer periphery of the outer ring 22. The outer ring 22 is connected and fixed to the mounting seat 16 through the connection lugs 21. The outer ring flange 24 is used to connect the wheels.

[0042] Optionally, the connecting portion 11 is provided with a first mounting hole 111, the connecting ear 21 is provided with a second mounting hole 211, and they are connected and fixed by a fastener 30.

[0043] Optionally, please refer to Figure 1 and Figure 4 , the steering assembly 100 further includes a gasket 50. The gasket 50 is a ring member. The gasket 50 is disposed between the fastener 30 and the connecting ear 21. The minimum spacing distance between the inner peripheral wall surface of the first mounting hole 111 and the inner peripheral wall surface of the through hole 17 of the knuckle 10 is D, and the difference between the outer diameter and the inner diameter of the gasket 50 is W, satisfying: W≤D. Optionally, the fastener 30 can be a bolt, a rivet, a pin, etc., without limitation. Optionally, the gasket 50 can be made of materials that meet the structural strength, corrosion resistance, and easy processing and forming, specifically rubber, stainless steel, spring steel, copper alloy, etc., without limitation.

[0044] By setting that the first connecting surface 25 and the second connecting surface 18 are in contact only through a plurality of connecting ears 21 and a plurality of connecting portions 11, the hub bearing 20 and the knuckle 10 are in contact and connected and fixed only through the connecting ears 21 and the connecting portions 11, reducing the contact area between the hub bearing 20 and the knuckle 10, and reducing the steering abnormal noise generated between the hub bearing 20 and the knuckle 10 due to rubbing deformation during vehicle steering.

[0045] Please refer to Figures 1 to 3 , the first connecting surface 25 is provided with a plurality of first avoidance grooves 26. The first avoidance grooves 26 are disposed between two adjacent connecting ears 21. The plurality of first avoidance grooves 26 are all recessed relative to the first connecting surface 25, and the side wall of the first avoidance groove 26 is connected to the top surface of the adjacent connecting ear 21; and / or, the second connecting surface 18 is provided with a plurality of second avoidance grooves 12. The second avoidance grooves 12 are disposed between two adjacent connecting portions 11. The plurality of second avoidance grooves 12 are all recessed relative to the second connecting surface 18, and the side wall of the second avoidance groove 12 is connected to the top surface of the adjacent connecting portion 11.

[0046] Optionally, the steering assembly 100 can be provided with a plurality of first avoidance grooves 26 only on the hub bearing 20, or a plurality of second avoidance grooves 12 only on the knuckle 10, or a plurality of first avoidance grooves 26 can be provided on the hub bearing 20 and a plurality of second avoidance grooves 12 can be provided on the knuckle 10 at the same time, without limitation. Optionally, the first connecting surface 25 is located on the aforementioned outer ring 22, and the first avoidance groove 26 is opened from the outer periphery of the outer ring 22 towards the inner ring 23. Optionally, the side wall surface of the first avoidance groove 26 is smoothly connected to the side surface of the connecting ear 21.

[0047] Optionally, please refer to Figure 1 and Figure 3, the knuckle 10 further includes a mounting seat 16 and a knuckle body 13. The knuckle body 13 includes a first surface 133, and the mounting seat 16 includes a base 164. The base 164 is disposed on the first surface 133, and the connecting portion 11 is disposed on the end face of the base 164 facing away from the first surface 133.

[0048] Optionally, please refer to Figure 1 , the mounting seat 16 and the knuckle body 13 are of an integral structure. Optionally, the base 164 and the connecting portion 11 are of an integral structure. Optionally, please refer to Figure 3 , in the orthographic projection of the first surface 133, the top surface of the connecting portion 11 falls within the bottom surface of the mounting seat 16. Optionally, from the top surface of the mounting seat 16 towards the first surface 133, the outer peripheral surface of the mounting seat 16 can extend linearly or bendedly, without limitation.

[0049] Optionally, the aforementioned second mounting hole 211 is a circular hole. The connecting ear 21 includes a first region, a second region, and a third region. The first region is annular and encloses to form the second mounting hole 211. The second region and the third region are located on opposite sides of the first region. The first region faces the connecting portion 11, and part of the second region and / or part of the third region faces the second avoidance groove 12.

[0050] Optionally, please refer to Figure 4 , the outer peripheral surface of the mounting seat 16 includes a first arc surface 161 and a second arc surface 162. The first arc surface 161 and the second arc surface 162 are smoothly connected. The first arc surface 161 constitutes part of the outer peripheral surface of the connecting portion 11, and the second arc surface 162 corresponds to the second avoidance groove 12. Wherein, at any position in the thickness direction of the mounting seat 16, the cross-sectional shapes of the first arc surface 161 and the second arc surface 162 are both arcs, and the first arc surface 161 bends towards the inner side of the mounting seat 16, and the second arc surface 162 bends towards the outer side of the mounting seat 16.

[0051] Optionally, please refer to Figure 4 , the outer peripheral surface of the mounting seat 16 further includes a third arc surface 163. The third arc surface 163 corresponds to the second avoidance groove 12, and the third arc surface 163 is smoothly connected to the second arc surface 162. Wherein, at any position in the thickness direction of the mounting seat 16, the cross-sectional shape of the third arc surface 163 is an arc, and the third arc surface 163 bends towards the inner side of the mounting seat 16.

[0052] Optionally, please refer to Figure 1 and Figure 3, the mounting seat 16 is an annular member that encloses the through hole 17, and the second avoidance groove 12 extends along the circumferential direction of the mounting seat 16. Optionally, the through hole 17 penetrates the knuckle body 13 from the top surface of the mounting seat 16 in the third direction X. The through hole 17 is used to receive one end of the outer ring 22 away from the outer ring flange 24. The outer ring 22 is connected in cooperation with the through hole 17. The drive shaft (not shown) of the vehicle is connected to the inner ring 23 through the through hole 17 to transmit power to the wheel through the inner ring 23 and the outer ring flange 24 to realize the driving of the wheel. Optionally, the second avoidance groove 12 communicates with the inner circumferential surface of the through hole 17 and the outer circumferential surface of the mounting seat 16. Exemplarily, the third direction X corresponds to the thickness direction of the knuckle 10.

[0053] Optionally, please refer to Figure 2 and Figure 3 , in the orthographic projection facing the first surface 133, the contour shape of the through hole 17 is circular. Correspondingly, the outer contour shape of the outer ring 22 is also circular. Optionally, in the orthographic projection facing the first surface 133, the contour shape of the through hole 17 can also be rectangular, triangular, elliptical, etc. Correspondingly, the outer contour shapes of the outer ring 22 are rectangular, triangular, elliptical, etc., without limitation.

[0054] Optionally, the knuckle body 13 is further provided with a first connection port 131 and a second connection port 132. The first connection port 131 and the second connection port 132 are arranged at intervals and are both located at one end of the knuckle body 13 in the first direction Y. Both the first connection port 131 and the second connection port 132 are used to connect with the caliper assembly (not shown) of the vehicle.

[0055] Optionally, the knuckle 10 further includes a first connecting arm 14 and a second connecting arm 15. The steering assembly further includes a tie rod 40. The first connecting arm 14 is connected to one end of the knuckle body 13 in the second direction Z. The second connecting arm 15 is connected to one end of the knuckle body 13 in the first direction Y. The first connecting arm 14 is used to connect with the suspension system (not shown) of the vehicle. The second connecting arm 15 is rotatably connected to the tie rod 40. The mounting seat 16 is arranged on the knuckle body 13. Exemplarily, the first direction Y corresponds to the width direction of the knuckle 10, and the second direction Z corresponds to the height direction of the knuckle 10.

[0056] One end of the steering tie rod 40 is rotatably connected to the steering knuckle 10, and the other end is connected to the steering wheel (not shown) of the vehicle. The driver rotates the steering wheel and drives the steering knuckle 10 to rotate through the steering tie rod 40, so as to drive the hub bearing 20 and the wheel to rotate to realize vehicle steering. When the vehicle is steering, due to changes in factors such as road conditions, vehicle speed, and load, the rotational synchronism between the wheel and the steering knuckle 10 will be affected. For example, when driving at high speed, due to the increased inertial effect of the wheel, the response speed of the wheel to the steering wheel will be relatively reduced. In addition, since the wheel is fixedly connected to the inner ring 23, and the steering knuckle 10 is fixedly connected to the outer ring 22, when the vehicle is steering, and the material properties of the steering knuckle 10 and the outer ring 22 are usually different, the rubbing deformations generated when the steering knuckle 10 and the outer ring 22 are subjected to axial torsional loads are not the same, resulting in abnormal noise between the connecting ear 21 on the outer ring 22 and the mounting seat 16 of the steering knuckle 10.

[0057] Optionally, the steering knuckle body 13, the first connecting arm 14, and the second connecting arm 15 are of an integral structure. Optionally, the mounting seat 16 and the steering knuckle body 13 are of an integral structure. Optionally, the steering knuckle 10 can be made of materials that meet the requirements of structural strength, wear resistance, and easy processing and forming, specifically, cast iron, cast steel, aluminum alloy, etc., without limitation.

[0058] By providing that the first connecting surface 25 is provided with a plurality of first avoidance grooves 26, the first avoidance grooves 26 are arranged between two adjacent connecting ears 21, the plurality of first avoidance grooves 26 are all recessed with respect to the first connecting surface 25, and the side wall of the first avoidance groove 26 is connected to the top surface of the adjacent connecting ear 21; and / or, the second connecting surface 18 is provided with a plurality of second avoidance grooves 12, the second avoidance grooves 12 are arranged between two adjacent connecting parts 11, the plurality of second avoidance grooves 12 are all recessed with respect to the second connecting surface 18, and the side wall of the second avoidance groove 12 is connected to the top surface of the adjacent connecting part 11, so that when the vehicle is steering, the slight deformations generated after the connecting ear 21 and the connecting part 11 are subjected to axial torsional loads can be correspondingly released to the first avoidance grooves 26 and the second avoidance grooves 12, reducing the rubbing deformation between the connecting part 11 and the connecting ear 21 during steering, thereby reducing steering abnormal noise.

[0059] Please refer to Figure 4 , the roughness of the first connecting surface 25 and / or the second connecting surface 18 is Ra, satisfying: 1 μm (micrometer) ≤ Ra ≤ 3 μm. Optionally, Ra can specifically be 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, etc., without limitation.

[0060] Optionally, when a plurality of first avoidance grooves 26 are formed in the first connection surface 25, the surface roughness Ra of the first connection surface 25 refers to the surface roughness Ra of the top surface of the connection ear 21. When a plurality of second avoidance grooves 12 are formed in the second connection surface 18, the surface roughness Ra of the second connection surface 18 refers to the surface roughness Ra of the top surface of the connection portion 11.

[0061] By setting the surface roughness of the first connection surface 25 and / or the second connection surface 18 to Ra, satisfying 1 μm ≤ Ra ≤ 3 μm, the connection portion 11 and the connection ear 21 can be stably connected and are not prone to displacement.

[0062] Please refer to Figure 4 , the first connection surface 25 and / or the second connection surface 18 is provided with a texture 112, and the shape of the texture 112 is at least one of the following: polygon, circle, and ellipse.

[0063] Exemplarily, the texture 112 is disposed on the top surface of the connection portion 11. In the orthographic projection of the second connection surface 18, the texture 112 is a grid structure or a honeycomb structure composed of a plurality of protruding units with a polygon, circle, or ellipse contour shape. Optionally, when the contour shape of the protruding unit in the orthographic projection of the second connection surface 18 is a polygon, its shape can be a rectangle, triangle, trapezoid, parallelogram, etc., without limitation.

[0064] By setting the first connection surface 25 and / or the second connection surface 18 to be provided with a texture 112, and the shape of the texture 112 is at least one of the following: polygon, circle, and ellipse, the connection portion 11 and the connection ear 21 can be stably connected and are not prone to displacement.

[0065] Please refer to Figure 1 , the depth of the first avoidance groove 26 and / or the second avoidance groove 12 is H, satisfying 0.4 mm (millimeter) ≤ H ≤ 0.6 mm. Optionally, when the bottom wall surface of the second avoidance groove 12 is a plane, H is the spacing distance in the third direction X between any position of the bottom wall surface of the second avoidance groove 12 and the top surface of the mounting seat 16. When the bottom wall surface of the second avoidance groove 12 is an arc surface, H is the maximum spacing distance in the third direction X between the bottom wall surface of the second avoidance groove 12 and the top surface of the mounting seat 16. Specifically, H can be 0.4 mm, 0.5 mm, 0.6 mm, etc., without limitation. Exemplarily, the third direction X corresponds to the thickness direction of the steering knuckle 10.

[0066] Optionally, when H < 0.4 mm, the depth of the second relief groove 12 is too low, which is not conducive to the mounting seat 16 releasing stress to the second relief groove 12 after being subjected to an axial torsional load. Optionally, when H > 0.6 mm, the structural strength of the side wall surface of the second relief groove 12 is low, and there is a risk of damage to the mounting seat 16 after being subjected to an axial torsional load. Optionally, the structure of the first relief groove 26 is similar to that of the second relief groove 12, and reference can be made thereto without further elaboration.

[0067] By setting the depth of the first relief groove 26 and / or the second relief groove 12 to be H, satisfying: 0.4 mm ≤ H ≤ 0.6 mm, the side wall surfaces of the first relief groove 26 and / or the second relief groove 12 have sufficient structural strength and are not easily damaged, and at the same time, there is sufficient space for the connecting ear 21 to release stress to the first relief groove 26 after being subjected to an axial torsional load, and / or, the connecting portion 11 releases stress to the second relief groove 12 after being subjected to an axial torsional load.

[0068] Please refer to Figure 1 and Figure 3 , the first relief groove 26 and / or the second relief groove 12 is in a flared shape. Specifically, in the direction from the bottom wall surface of the second relief groove 12 to the top surface of the mounting seat 16, the distance between the two opposite side wall surfaces of the second relief groove 12 gradually decreases.

[0069] Optionally, the side wall surface of the second relief groove 12 can be an arc surface or can extend along a straight line without limitation. Optionally, when the second relief groove 12 extends circumferentially, in the direction from the inner side of the mounting seat 16 to the outer side of the mounting seat 16, the distance between the two opposite side wall surfaces of the second relief groove 12 gradually increases. Optionally, the structure of the first relief groove 26 is similar to that of the second relief groove 12, and reference can be made thereto without further elaboration.

[0070] By setting the first relief groove 26 and / or the second relief groove 12 to be in a flared shape, a chamfer is formed between the side wall surface of the first relief groove 26 and the top surface of the connecting ear 21, and / or, a chamfer is formed between the side wall surface of the second relief groove 12 and the top surface of the mounting seat 16, reducing the stress at the connection, and the connecting ear 21 and / or the connecting portion 11 are not easily damaged when subjected to an axial torsional load.

[0071] Please refer to Figure 3 , the multiple connecting portions 11 and the multiple second relief grooves 12 are arranged axially symmetrically. Specifically, the multiple connecting portions 11 and the multiple second relief grooves 12 are both axially symmetrically arranged with respect to a first center line (not shown), the first center line extends along the second direction Z and passes through the center of the aforementioned through hole 17. Optionally, the multiple connecting ears 21 and the multiple first relief grooves 26 are also arranged axially symmetrically, the multiple connecting ears 21 are arranged in one-to-one correspondence with the multiple connecting portions 11, and the multiple first relief grooves 26 are arranged in one-to-one correspondence with the multiple second relief grooves 12.

[0072] By arranging a plurality of connecting portions 11 and a plurality of second relief grooves 12 to be axially symmetrically arranged, the load can be evenly distributed between the knuckle 10 and the outer ring 22, and it is not easy to cause abnormal noise and damage due to uneven stress.

[0073] Please refer to Figure 3 and Figure 4 , the plurality of second relief grooves 12 include a first sub-relief groove 121 and a second sub-relief groove 122. The first sub-relief groove 121 and the second sub-relief groove 122 are respectively arranged at both ends of the connecting portion 11 in the circumferential direction, and the size of the first sub-relief groove 121 in the circumferential direction is greater than or less than the size of the second sub-relief groove 122 in the circumferential direction.

[0074] Optionally, the first sub-relief groove 121 is located at one end of the mounting seat 16 in the second direction Z. Optionally, a connecting portion 11 may also be arranged on the side of the first sub-relief groove 121 away from the through hole 17 in the second direction Z. Optionally, a connecting portion 11 may also be connected to the side of the second sub-relief groove 122 away from the through hole 17 in the first direction Y. Exemplarily, the size of the first sub-relief groove 121 in the circumferential direction is less than the size of the second sub-relief groove 122 in the circumferential direction, and the first sub-relief groove 121 is located on the side of the second sub-relief groove 122 away from the road surface.

[0075] Optionally, the plurality of first relief grooves 26 include a fourth sub-relief groove 261 and a fifth sub-relief groove 262. The fourth sub-relief groove 261 and the fifth sub-relief groove 262 are respectively arranged at both ends of the connecting ear 21 in the circumferential direction. The fourth sub-relief groove 261 is correspondingly arranged with the first sub-relief groove 121, and the fifth sub-relief groove 262 is correspondingly arranged with the second sub-relief groove 122.

[0076] By arranging the plurality of second relief grooves 12 to include a first sub-relief groove 121 and a second sub-relief groove 122, the first sub-relief groove 121 and the second sub-relief groove 122 are respectively arranged at both ends of the connecting portion 11 in the circumferential direction, and the size of the first sub-relief groove 121 in the circumferential direction is greater than or less than the size of the second sub-relief groove 122 in the circumferential direction, so that the plurality of connecting portions 11 can be arranged at different positions of the knuckle 10 according to different stress conditions. The first sub-relief groove 121 and the second sub-relief groove 122 have different circumferential dimensions according to the arrangement mode of the connecting portion 11, so as to provide sufficient space for the corresponding connecting portion 11 to release stress.

[0077] Please refer to Figure 4 , the first sub-relief groove 121 includes a first side wall 1211 and a second side wall 1212. The first side wall 1211 and the second side wall 1212 are oppositely arranged in the first direction Y, and both the first side wall 1211 and the second side wall 1212 extend along the second direction Z. The first direction Y and the second direction Z intersect.

[0078] Optionally, one end of the first side wall 1211 is connected to the outer peripheral surface of the mounting seat 16, and there is a spacing distance between the other end and the inner peripheral wall surface of the through hole 17. The first side wall 1211 can also be connected to the inner peripheral wall surface of the through hole 17, without limitation. Optionally, one end of the second side wall 1212 is connected to the outer peripheral surface of the mounting seat 16, and there is a spacing distance between the other end and the inner peripheral wall surface of the through hole 17. The second side wall 1212 can also be connected to the inner peripheral wall surface of the through hole 17, without limitation. Optionally, the structure of the fourth sub-avoidance groove 261 is similar to that of the first sub-avoidance groove 121, and can be referred to without further elaboration.

[0079] By providing that the first sub-avoidance groove 121 includes a first side wall 1211 and a second side wall 1212, the first side wall 1211 and the second side wall 1212 are oppositely arranged in the first direction Y, and both the first side wall 1211 and the second side wall 1212 extend along the second direction Z, it is possible to reduce the occurrence of stress concentration. When subjected to an external force, the stress can be more evenly distributed over each part of the first sub-avoidance groove 121, thereby improving the strength and durability of the structure, and at the same time facilitating the machining and forming of the first sub-avoidance groove 121.

[0080] Please refer to Figure 4 , the spacing distance between the first side wall 1211 and the second side wall 1212 in the first direction Y is A, satisfying: 21.7 mm ≤ A ≤ 22.7 mm.

[0081] Optionally, A can specifically be 21.7 mm, 21.9 mm, 22.1 mm, 22.3 mm, 22.5 mm, 22.7 mm, etc., without limitation. Optionally, when A < 21.7 mm, the spacing distance between the connecting portions 11 on both sides of the first sub-avoidance groove 121 is too small, resulting in a low connection stability between the outer ring 22 and the steering knuckle 10, and it is easy to cause the connecting portion 11 to be subjected to excessive torque and be damaged, and the space of the first sub-avoidance groove 121 is too small to facilitate the connecting portion 11 to release stress. Optionally, when A > 22.7 mm, the structural strength of the mounting seat 16 at the first sub-avoidance groove 121 is low, and deformation and damage are likely to occur. Optionally, the structure of the fourth sub-avoidance groove 261 is similar to that of the first sub-avoidance groove 121, and can be referred to without further elaboration.

[0082] By providing that the spacing distance between the first side wall 1211 and the second side wall 1212 in the first direction Y is A, satisfying: 21.7 mm ≤ A ≤ 22.7 mm, the first sub-avoidance groove 121 has sufficient space for the connecting portions 11 on both sides to release stress to the first sub-avoidance groove 121 after being subjected to an axial torsional load, improving the structural strength and stability of the steering knuckle 10.

[0083] Please refer toFigure 4 The first sub-avoidance groove 121 further includes a third side wall 1213 and a fourth side wall 1214. The third side wall 1213 and the fourth side wall 1214 are oppositely arranged in the first direction Y. The third side wall 1213 is connected to the first side wall 1211, and the fourth side wall 1214 is connected to the second side wall 1212. From the direction close to the first side wall 1211 to the direction away from the first side wall 1211, the spacing distance between the third side wall 1213 and the fourth side wall 1214 gradually increases in the first direction Y.

[0084] Optionally, both the third side wall 1213 and the fourth side wall 1214 are bent and extended toward the side of the first sub-avoidance groove 121 close to the corresponding connecting portion 11. Optionally, the ratio of the length of the first side wall 1211 to the length of the third side wall 1213 can be 1 / 1, 1 / 2, 1 / 3, 1 / 4, etc., without limitation. Optionally, the ratio of the length of the second side wall 1212 to the length of the fourth side wall 1214 can be 1 / 1, 1 / 2, 1 / 3, 1 / 4, etc., without limitation. Optionally, the structure of the fourth sub-avoidance groove 261 is similar to that of the first sub-avoidance groove 121, and can be referred to without further elaboration.

[0085] By setting that the first sub-avoidance groove 121 further includes a third side wall 1213 and a fourth side wall 1214, the third side wall 1213 and the fourth side wall 1214 are oppositely arranged in the first direction Y, the third side wall 1213 is connected to the first side wall 1211, the fourth side wall 1214 is connected to the second side wall 1212, and from the direction close to the first side wall 1211 to the direction away from the first side wall 1211, the spacing distance between the third side wall 1213 and the fourth side wall 1214 gradually increases in the first direction Y, it can make the stress distribution more uniform when the connecting portion 11, the first sub-avoidance groove 121 and the connection outside the through hole 17 are subjected to stress, prevent cracking or fatigue failure caused by stress concentration, and extend the service life of the steering knuckle 10.

[0086] Please refer to Figure 4 The second sub-avoidance groove 122 includes a fifth side wall 1221 and a sixth side wall 1222. Both the fifth side wall 1221 and the sixth side wall 1222 extend along a straight line. The included angle B between the fifth side wall 1221 and the sixth side wall 1222 satisfies: 69.5° ≤ B ≤ 70.5°.

[0087] Optionally, B can specifically be 69.5°, 70°, 70.5°, etc., without limitation. Optionally, when B < 69.5°, the distance between the fifth side wall 1221 and the sixth side wall 1222 is too small, that is, the contact area between the connecting parts 11 on both sides of the second sub-avoidance groove 122 and the connecting ear 21 is too large when the positions of the connecting parts 11 remain unchanged, which is not conducive to reducing steering abnormal noise. Optionally, when B > 70.5°, the distance between the fifth side wall 1221 and the sixth side wall 1222 is too large, that is, the thickness of the outer wall of the first mounting hole 111 of the connecting part 11 is too small when the positions of the connecting parts 11 on both sides of the second sub-avoidance groove 122 remain unchanged, resulting in relatively low structural strength of the connecting part 11. The structure of the fifth sub-avoidance groove 262 is similar to that of the second sub-avoidance groove 122, and reference can be made thereto without further elaboration.

[0088] By setting that the second sub-avoidance groove 122 includes a fifth side wall 1221 and a sixth side wall 1222, both the fifth side wall 1221 and the sixth side wall 1222 extend along a straight line, and the included angle between the fifth side wall 1221 and the sixth side wall 1222 is B, satisfying: 69.5° ≤ B ≤ 70.5°, the contact area between the connecting parts 11 on both sides of the second sub-avoidance groove 122 and the connecting ear 21 is small, and the structural strength of the connecting part 11 meeting the preset value is ensured.

[0089] Please refer to Figure 4 , there are at least two second sub-avoidance grooves 122, and at least two second sub-avoidance grooves 122 are respectively arranged on both sides of the first sub-avoidance groove 121 in the first direction Y.

[0090] Exemplarily, there are two second sub-avoidance grooves 122, and the two second avoidance grooves 12 are respectively located on both sides of the through hole 17 in the first direction Y. Optionally, multiple second sub-avoidance grooves 122 can be arranged on one side and / or both sides of the through hole 17 in the first direction Y, and the multiple second sub-avoidance grooves 122 located on the same side of the through hole 17 in the first direction Y are arranged in sequence along the circumferential direction. Optionally, there are at least two fifth sub-avoidance grooves 262, and at least two fifth sub-avoidance grooves 262 are respectively arranged on both sides of the fourth sub-avoidance groove 261 in the first direction Y.

[0091] By setting that there are at least two second sub-avoidance grooves 122, and at least two second sub-avoidance grooves 122 are respectively arranged on both sides of the first sub-avoidance groove 121 in the first direction Y, the steering knuckle 10 can be fixedly connected to the outer ring 22 through multiple connecting parts 11, and when multiple steering knuckles 10 are subjected to axial torsional loads, they can all release stress to the second sub-avoidance grooves 122 connected thereto, further improving the structural strength and stability of the steering assembly 100.

[0092] Please refer to Figure 3 and Figure 4, the plurality of second relief grooves 12 further includes a third sub-relief groove 123. The third sub-relief groove 123 and the second sub-relief groove 122 are respectively disposed at two ends of the connecting portion 11 in the circumferential direction, and the third sub-relief groove 123 and the first sub-relief groove 121 are oppositely disposed in the second direction Z. The circumferential dimensions of the first sub-relief groove 121, the second sub-relief groove 122, and the third sub-relief groove 123 are all unequal.

[0093] Optionally, a connecting portion 11 may also be connected to the side of the third sub-relief groove 123 away from the through hole 17 in the second direction Z. Optionally, both ends of the two side wall surfaces of the third sub-relief groove 123 away from the through hole 17 extend along the second direction Z, and the ends close to the through hole 17 extend in a curved manner. Optionally, from the direction close to the through hole 17 to the direction away from the through hole 17, the spacing distance between the two side walls of the third sub-relief groove 123 close to the through hole 17 in the first direction Y gradually decreases.

[0094] Optionally, the first relief groove 26 further includes a sixth sub-relief groove 263. The sixth sub-relief groove 263 and the fifth sub-relief groove 262 are respectively disposed at two ends of the connecting ear 21 in the circumferential direction, and the sixth sub-relief groove 263 and the fourth sub-relief groove 261 are oppositely disposed in the second direction Z. The circumferential dimensions of the fourth sub-relief groove 261, the fifth sub-relief groove 262, and the sixth sub-relief groove 263 are all unequal.

[0095] By providing that the plurality of second relief grooves 12 further includes a third sub-relief groove 123, the third sub-relief groove 123 and the second sub-relief groove 122 are respectively disposed at two ends of the connecting portion 11 in the circumferential direction, and the third sub-relief groove 123 and the first sub-relief groove 121 are oppositely disposed in the second direction Z, and the circumferential dimensions of the first sub-relief groove 121, the second sub-relief groove 122, and the third sub-relief groove 123 are all unequal, it enables the plurality of connecting portions 11 to release stress to the third sub-relief groove 123 after being subjected to an axial torsional load, further improving the structural strength and stability of the steering knuckle 10 and not easily generating steering abnormal noise.

[0096] Please refer to Figure 4 , the second sub-relief groove 122 includes a seventh side wall 1231 and an eighth side wall 1232. Both the seventh side wall 1231 and the eighth side wall 1232 extend along the second direction Z. The spacing distance between the seventh side wall 1231 and the eighth side wall 1232 in the first direction Y is C, satisfying: 41.7 mm ≤ C ≤ 42.7 mm, and the first direction Y and the second direction Z intersect.

[0097] Optionally, the side wall surface of the third sub-avoidance groove 123 may extend linearly or at least partially bend, without limitation. Optionally, since the two opposite side wall surfaces of the third sub-avoidance groove 123 are inclined surfaces, C is the minimum spacing distance between the two opposite side wall surfaces of the third sub-avoidance groove 123 at the bottom wall surface of the third sub-avoidance groove 123.

[0098] Optionally, C may specifically be 41.7 mm, 41.9 mm, 42.1 mm, 42.3 mm, 42.5 mm, 42.7 mm, etc., without limitation. Optionally, when C < 41.7 mm, the spacing distance between the connecting portions 11 on both sides of the third sub-avoidance groove 123 is too small, resulting in relatively low connection stability between the outer ring 22 and the steering knuckle 10, easily causing excessive torque on the connecting portion 11 and leading to damage to the connecting portion 11, and the space of the third sub-avoidance groove 123 is too small to facilitate the release of stress by the connecting portion 11. Optionally, when C > 42.7 mm, the structural strength of the connecting portion 11 at the third sub-avoidance groove 123 is relatively low, prone to deformation and damage.

[0099] Among them, the spacing distance between the connecting portions 11 on both sides of the first sub-avoidance groove 121 is smaller than the spacing distance between the connecting portions 11 on both sides of the third sub-avoidance groove 123, enabling the connecting portions 11 on both sides of the first sub-avoidance groove 121 to enhance the mechanical distribution of the upper part of the steering knuckle 10, making the steering knuckle 10 more stable when bearing the weight from the vehicle body. At the same time, the connecting portions 11 on both sides of the third sub-avoidance groove 123 contribute to dispersing the lateral force and impact force generated during vehicle travel, improving the durability and safety of the steering knuckle 10.

[0100] Optionally, the structure of the sixth sub-avoidance groove 263 is similar to the structure of the third sub-avoidance groove 123, which can be referred to and will not be elaborated here.

[0101] By setting that the second sub-avoidance groove 122 includes a seventh side wall 1231 and an eighth side wall 1232, both the seventh side wall 1231 and the eighth side wall 1232 extend along the second direction Z, and the spacing distance between the seventh side wall 1231 and the eighth side wall 1232 in the first direction Y is C, satisfying: 41.7 mm ≤ C ≤ 42.7 mm, and the first direction Y and the second direction Z intersect, enabling the third sub-avoidance groove 123 to have sufficient space for the connecting portions 11 on both sides to release stress to the third sub-avoidance groove 123 after being subjected to axial torsional loads, improving the structural strength and stability of the steering knuckle 10.

[0102] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0103] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of rights of the present utility model. Those of ordinary skill in the art can understand the entire or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A steering assembly, characterized in that: include: The wheel hub bearing comprises a first connection surface, wherein the first connection surface comprises a plurality of connection ears spaced apart from each other; A steering knuckle, comprising a second connecting surface, wherein the second connecting surface comprises a plurality of connecting portions, and the plurality of connecting portions correspond one-to-one to the plurality of connecting ears; A plurality of fasteners, wherein the plurality of fasteners are connected to the plurality of connecting ears and the plurality of connecting parts in a one-to-one correspondence, so as to connect and fix the wheel hub bearing to the steering knuckle; Wherein, the first connection surface is in contact with the second connection surface only through the plurality of connection ears and the plurality of connection parts.

2. The steering assembly according to claim 1, characterized in that: The surface roughness of the first connection surface and / or the second connection surface is Ra, which satisfies: 1 μm≤Ra≤3 μm.

3. The steering assembly according to claim 1, characterized in that: The first connecting surface and / or the second connecting surface is provided with a texture, and the shape of the texture is at least one of the following: polygon, circle and ellipse.

4. The steering assembly according to claim 1, characterized in that: The first connecting surface is provided with a plurality of first avoiding grooves, the first avoiding grooves are arranged between two adjacent connecting ears, the plurality of first avoiding grooves are all recessed relative to the first connecting surface, and the side walls of the first avoiding grooves are connected to the top surfaces of the adjacent connecting ears; And / or, the second connecting surface is provided with a plurality of second avoidance grooves, the second avoidance grooves are arranged between two adjacent connecting parts, the plurality of second avoidance grooves are all recessed relative to the second connecting surface, and the side walls of the second avoidance grooves are connected to the top surfaces of the adjacent connecting parts.

5. The steering assembly according to claim 4, characterized in that: The depth of the first avoidance groove and / or the second avoidance groove is H, which satisfies: 0.4 mm ≤ H ≤ 0.6 mm.

6. The steering assembly according to claim 5, characterized in that: The first avoidance groove and / or the second avoidance groove is in a flared shape.

7. The steering assembly according to claim 4, characterized in that: The plurality of connection portions and the plurality of the second avoidance grooves are arranged in an axisymmetric manner.

8. The steering assembly according to claim 4, characterized in that: The plurality of second avoidance grooves include a first sub-avoidance groove and a second sub-avoidance groove, wherein the first sub-avoidance groove and the second sub-avoidance groove are respectively arranged at both ends of the connecting portion in the annular direction, and the size of the first sub-avoidance groove in the annular direction is larger or smaller than the size of the second sub-avoidance groove in the annular direction.

9. The steering assembly according to claim 8, characterized in that The first sub-avoidance groove includes a first side wall and a second side wall, the first side wall and the second side wall are arranged opposite to each other in a first direction, the first side wall and the second side wall both extend along a second direction, and the first direction and the second direction intersect.

10. The steering assembly according to claim 9, characterized in that The spacing distance between the first side wall and the second side wall in the first direction is A, which satisfies: 21.7 mm≤A≤22.7 mm.

11. The steering assembly according to claim 9, characterized in that The first sub-avoidance groove further includes a third side wall and a fourth side wall, the third side wall and the fourth side wall are arranged opposite to each other in the first direction, the third side wall is connected to the first side wall, and the fourth side wall is connected to the second side wall; From a direction close to the first side wall to a direction away from the first side wall, a spacing distance between the third side wall and the fourth side wall in the first direction gradually increases.

12. The steering assembly according to claim 8, characterized in that The second sub-avoidance groove includes a fifth side wall and a sixth side wall, the fifth side wall and the sixth side wall both extend in a straight line, and an angle B between the fifth side wall and the sixth side wall satisfies: 69.5°≤B≤70.5°.

13. The steering assembly according to claim 9, characterized in that There are at least two second sub-avoidance grooves, and the at least two second sub-avoidance grooves are respectively arranged on both sides of the first sub-avoidance groove in the first direction.

14. The steering assembly according to claim 8, characterized in that The plurality of second avoidance grooves also include a third sub-avoidance groove, and the third sub-avoidance groove and the second sub-avoidance groove are respectively arranged at the two ends of the connecting part in the annular direction, and the third sub-avoidance groove and the first sub-avoidance groove are arranged opposite to each other in the second direction, and the sizes of the first sub-avoidance groove, the second sub-avoidance groove and the third sub-avoidance groove in the annular direction are not equal.

15. The steering assembly according to claim 14, characterized in that The second sub-avoidance groove includes a seventh side wall and an eighth side wall, both of which extend along the second direction, and the spacing distance between the seventh side wall and the eighth side wall in the first direction is C, satisfying: 41.7mm≤C≤42.7mm, and the first direction and the second direction intersect.

16. A vehicle, characterized in that: Comprising a steering assembly as described in any one of claims 1-15.

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