Double-fork-arm steering knuckle and vehicle

Abstract

The embodiment of the utility model relates to the technical field of double-fork-arm steering knuckles, and discloses a double-fork-arm steering knuckle and a vehicle, the double-fork-arm steering knuckle comprises a steering knuckle body, the steering knuckle body is provided with a bearing mounting seat, the bearing mounting seat is provided with a bearing mounting hole, and the bearing mounting hole is used for mounting a hub bearing. A plurality of fixing holes are formed in the bearing mounting seat, are arranged around the periphery of the bearing mounting hole, and are used for being connected with a hub bearing. A groove is formed in the face, back on to the steering knuckle body, of the bearing installation base, a groove is formed between at least two adjacent fixing holes, and the groove bottom of the groove is lower than the contact face of the bearing installation base and the hub bearing so that the groove bottom of the groove can be in clearance fit with the hub bearing. In this way, in the vehicle steering process, the hub bearing does not make contact with the groove, abnormal sound generated by deformation of the steering knuckle in the vehicle steering process can be avoided, and therefore the user experience is effectively improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of double-wishbone steering knuckles, and in particular, to a double-wishbone steering knuckle and a vehicle. Background Art

[0002] During the driving of a vehicle, steering needs to be performed through a steering system. Among them, the double-wishbone steering knuckle is one of the main parts in the steering system. The double-wishbone steering knuckle transmits the acting force of the steering wheel to the wheels to make the wheels turn.

[0003] The double-wishbone steering knuckle has a bearing mounting seat. The bearing mounting seat has a hub bearing mounting hole and a fixing hole. A part of the hub bearing is installed in the bearing mounting hole. The outer periphery of the hub bearing mounting hole has a bearing mating surface, and the mounting surface of the hub bearing contacts the bearing mating surface. However, during the steering of the vehicle, the double-wishbone steering knuckle is subjected to the steering pull arm force and at the same time the reverse friction force between the wheel and the ground, which causes the bearing mating surface of the double-wishbone steering knuckle to deform, thereby generating abnormal noise between the hub bearing and the double-wishbone steering knuckle, reducing the user experience. Utility Model Content

[0004] In view of this, the embodiments of the present application provide a double-wishbone steering knuckle and a vehicle, which can avoid the deformation of the steering knuckle during steering and generate abnormal noise, thereby effectively improving the user experience.

[0005] In order to achieve the above object, the technical solution of the embodiments of the present application is realized as follows:

[0006] In a first aspect, the embodiments of the present application provide a double-wishbone steering knuckle, including a steering knuckle body. The steering knuckle body has a bearing mounting seat. The bearing mounting seat is provided with a bearing mounting hole for mounting a hub bearing;

[0007] The bearing mounting seat has a plurality of fixing holes arranged around the outer periphery of the bearing mounting hole for connecting with the hub bearing;

[0008] A groove is provided on a surface of the bearing mounting seat facing away from the steering knuckle body. At least two adjacent fixing holes have the groove. The bottom of the groove is lower than the mating surface of the bearing mounting seat and the hub bearing, so that the bottom of the groove and the hub bearing are in clearance fit.

[0009] In the embodiment of the present application, a groove is formed on the surface of the bearing mount facing the hub bearing, and there is a groove between at least two adjacent fixing holes. The bottom of the groove is lower than the mating surface of the bearing mount and the hub bearing, so that there is a clearance fit between the bottom of the groove and the hub bearing. In this way, during the vehicle steering process, the hub bearing and the groove will not come into contact, which can avoid abnormal noise caused by deformation of the double-wishbone steering knuckle during the vehicle steering process, thereby effectively improving the user experience.

[0010] In a possible implementation manner of the present application, the surface of the bearing mount facing the hub bearing has a bearing mating surface, and the bearing mating surface is in contact with the hub bearing;

[0011] The fixing holes are formed on the bearing mating surface, and the groove is recessed from the bearing mating surface in a direction away from the hub bearing, so that there is a clearance between the groove and the hub bearing.

[0012] In a possible implementation manner of the present application, there is a groove between every two adjacent fixing holes.

[0013] In a possible implementation manner of the present application, the fixing holes include a first fixing hole, a second fixing hole, a third fixing hole, and a fourth fixing hole that are sequentially arranged around the outer circumference of the bearing mounting hole;

[0014] The grooves include a first groove between the first fixing hole and the second fixing hole, a second groove between the second fixing hole and the third fixing hole, a third groove between the third fixing hole and the fourth fixing hole, and a fourth groove between the fourth fixing hole and the first fixing hole.

[0015] In a possible implementation manner of the present application, the depth of the groove is 0.2 mm to 0.5 mm.

[0016] In a possible implementation manner of the present application, the circumferential length of the first groove is 50 mm to 90 mm.

[0017] In a possible implementation manner of the present application, the circumferential length of the second groove is 5 mm to 20 mm.

[0018] In a possible implementation manner of the present application, the circumferential length of the third groove is 55 mm to 95 mm.

[0019] In a possible implementation manner of the present application, the circumferential length of the fourth groove is 20 mm to 40 mm.

[0020] In a second aspect, the embodiment of the present application provides a vehicle, including a hub bearing and the double-wishbone steering knuckle described in any one of the above.

[0021] The hub bearing is fitted with the bearing mounting hole in the double-wishbone steering knuckle, and the hub bearing is in clearance fit with the groove on the bearing mounting seat. Description of the Drawings

[0022] Figure 1 It is a schematic structural view of a double-wishbone steering knuckle provided by an embodiment of the present application from one perspective;

[0023] Figure 2 It is a schematic structural view of a double-wishbone steering knuckle provided by an embodiment of the present application from another perspective;

[0024] Figure 3 It is Figure 2 the A-A cross-sectional view in

[0025] Figure 4 It is a partial enlarged view of a double-wishbone steering knuckle provided by an embodiment of the present application;

[0026] Figure 5 It is Figure 3 the enlarged view of area B in

[0027] Reference Signs:

[0028] 100 - Double-wishbone steering knuckle;

[0029] 110 - Steering knuckle body;

[0030] 111 - First connecting portion; 112 - Second connecting portion; 113 - Third connecting portion; 114 - Fourth connecting portion;

[0031] 120 - Bearing mounting seat;

[0032] 121 - Bearing mounting hole;

[0033] 122 - Fixing hole; 1221 - First fixing hole; 1222 - Second fixing hole;

[0034] 1223 - Third fixing hole; 1224 - Fourth fixing hole;

[0035] 123 - Groove; 1231 - First groove; 1232 - Second groove; 1233 - Third groove;

[0036] 1234 - Fourth groove;

[0037] 124 - Bearing mating surface. Detailed Description of the Embodiment

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will further describe the specific technical solutions of this application in detail with reference to the accompanying drawings in the embodiments of this application. The following embodiments are used to illustrate this application, but are not used to limit the scope of this application.

[0039] In the embodiments of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0040] In addition, in the embodiments of this application, orientation terms such as "upper", "lower", "left", and "right" are defined relative to the orientation in which the components in the drawings are schematically placed. It should be understood that these directional terms are relative concepts, and they are used for relative description and clarification, and they may change accordingly with the change of the orientation in which the components in the drawings are placed.

[0041] In the embodiments of this application, unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium.

[0042] In the embodiments of this application, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including that element.

[0043] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0044] Embodiments of the present application provide a double-wishbone steering knuckle and a vehicle including the double-wishbone steering knuckle. It should be noted that the vehicle in the present application can refer to large automobiles, small automobiles, special-purpose automobiles, etc. Exemplarily, classified by vehicle type, the automobiles in the present application can be sedan models, bus models, truck models, or off-road vehicle models, and can also be multi-purpose (Multi-Purpose Vehicles, MPV) models or other vehicle models. For example, the vehicle can be any one of an electric vehicle / electric car (Electric Vehicle; abbreviation: EV), a pure electric vehicle (Pure Electric Vehicle / Battery Electric Vehicle; abbreviation: PEV / BEV), a hybrid electric vehicle (Hybrid Electric Vehicle; abbreviation: HEV), a range-extended electric vehicle (Range Extended Electric Vehicle; abbreviation: REEV), a plug-in hybrid electric vehicle (Plug-in Hybrid Electric Vehicle; abbreviation: PHEV), and a new energy vehicle (New Energy Vehicle).

[0045] For a vehicle, generally, wheels, a power source, and a transmission system provided between the wheels and the power source are provided. The transmission system can transmit the power provided by the power source to the wheels to make the wheels rotate, thereby driving the vehicle to travel.

[0046] It should be noted that in the embodiments of the present application, the type of the power source of the vehicle is not limited. Exemplarily, for a fuel vehicle, the power source can refer to a fuel engine such as a gasoline engine or a diesel engine; for an electric vehicle, the power source can refer to an electric motor; for a fuel-electric hybrid vehicle, the power source can refer to an engine or an electric motor; for a vehicle powered by other means, the power source can refer to a device that generates power.)

[0047] The vehicle may further include a chassis and a body provided on the chassis. The body may have a passenger compartment, and a driver's seat, passenger seats, etc. may be provided in the passenger compartment. The driver can sit on the driver's seat to operate the vehicle. For example, structural components such as a steering wheel, a clutch, and a brake may also be provided on the body to enable the vehicle to achieve complete functions, which are not limited in the present application.

[0048] Among them, the double-wishbone steering knuckle can be connected to a wheel hub bearing. The steering knuckle can be connected to the upper swing arm, lower swing arm, steering tie rod, brake caliper, etc. of the vehicle. The side of the wheel hub bearing facing away from the steering knuckle is connected to a brake disc and a wheel, and the inner ring of the wheel hub can be connected to an axle. Thus, the steering operation of the vehicle can be transmitted to the wheels through the steering knuckle to make the wheels turn.

[0049] As described in the background art above, a bearing mating surface is also provided around the outer periphery of the bearing mounting hole on the double-wishbone steering knuckle, and the mounting surface of the hub bearing is in contact with the bearing mating surface. However, during the steering of the vehicle, the double-wishbone steering knuckle is subjected to the force of the steering tie rod and the frictional force between the tire and the ground, causing the bearing mating surface of the double-wishbone steering knuckle to deform, thereby generating abnormal noise between the hub bearing and the steering knuckle and reducing the user experience.

[0050] To solve the above problems, an embodiment of the present application provides a double-wishbone steering knuckle. By providing a groove on the surface of the bearing mounting seat facing the hub bearing, and at least two adjacent fixing holes have a groove therebetween, the bottom of the groove can be lower than the contact surface between the bearing mounting seat and the hub bearing, so that there is a clearance fit between the bottom of the groove and the hub bearing. In this way, during the steering of the vehicle, the hub bearing and the groove will not come into contact, and it is possible to avoid abnormal noise caused by deformation of the double-wishbone steering knuckle during the steering of the vehicle, thereby effectively improving the user experience.

[0051] The following will describe in detail the double-wishbone steering knuckle provided by the embodiment of the present application with reference to the accompanying drawings.

[0052] Figure 1 FIG. is a schematic structural diagram of a double-wishbone steering knuckle provided by an embodiment of the present application from one perspective. Figure 2 FIG. is a schematic structural diagram of a double-wishbone steering knuckle provided by an embodiment of the present application from another perspective. Figure 3 is Figure 2 the A-A cross-sectional view in

[0053] An embodiment of the present application provides a double-wishbone steering knuckle 100. Referring to Figure 1 as shown, the double-wishbone steering knuckle 100 may include a steering knuckle body 110. The steering knuckle body 110 may have a bearing mounting seat 120. A bearing mounting hole 121 may be provided on the bearing mounting seat 120, and the bearing mounting hole 121 may be used to mount a hub bearing. For example, a part of the hub bearing may be inserted into the bearing mounting hole 121.

[0054] A plurality of fixing holes 122 may be provided on the bearing mounting seat 120. The fixing holes 122 may be arranged around the outer periphery of the bearing mounting hole 121, and the fixing holes 122 may be used to connect with the hub bearing. For example, the hub bearing may be connected to the fixing holes 122 through bolt fasteners. The hub bearing may have mounting holes that cooperate with the fixing holes 122. The bolt fasteners may sequentially pass through the mounting holes on the hub bearing and the fixing holes 122 on the double-wishbone steering knuckle 100, so that the hub bearing can be connected to the double-wishbone steering knuckle 100 through bolt fasteners.

[0055] Among them, in combination with Figure 2 andFigure 3 As shown, a groove 123 can be formed on the side of the bearing mounting seat 120 facing away from the knuckle body 110, that is, a groove 123 is formed on the side of the bearing mounting seat 120 facing the wheel hub bearing. In other words, it can be understood that the groove 123 is located on the surface of the bearing mounting seat 120 that cooperates with the wheel hub bearing, so that the part of the groove 123 is lower than the remaining parts of the bearing mounting seat 120 that cooperate with the wheel hub bearing. Moreover, there can be a groove 123 between at least two adjacent fixing holes 122. For example, a groove 123 can be formed between one or two groups of adjacent fixing holes 122. Or, in some examples, a groove 123 can be formed between each pair of adjacent fixing holes 122. The bottom of the groove 123 can be lower than the contact surface between the bearing mounting seat 120 and the wheel hub bearing, so that there is a clearance fit between the bottom of the groove 123 and the wheel hub bearing. In this way, during the vehicle steering process, the wheel hub bearing and the groove 123 will not come into contact, which can avoid abnormal noise caused by deformation of the double-wishbone knuckle 100 during the vehicle steering process, thus effectively improving the user experience.

[0056] Continue to refer to Figure 2 and Figure 3 As shown, the side of the bearing mounting seat 120 facing the wheel hub bearing can have a bearing mating surface 124, and the bearing mating surface 124 can be in contact with the wheel hub bearing. For example, the bearing mating surface 124 can be located on the side of the bearing mounting seat 120 facing away from the knuckle body 110. During the connection between the wheel hub bearing and the double-wishbone knuckle 100, part of the wheel hub bearing can be inserted into the bearing mounting hole 121, and a part can cooperate with the bearing mating surface 124.

[0057] The fixing holes 122 are formed on the bearing mating surface 124. For example, during the connection between the wheel hub bearing and the fixing holes 122, part of the wheel hub bearing can be attached to the bearing mating surface 124, and the mounting holes on it can be aligned with the fixing holes 122, so that the bolt fasteners can pass through the mounting holes and the fixing holes 122 to fix the wheel hub bearing on the bearing mating surface 124.

[0058] The bearing mating surface 124 can improve the fitting degree and stability of the outer periphery of the wheel hub bearing and the fixing holes 122, can reduce or avoid the situation of offset or tilt of the wheel hub bearing during the connection with the fixing holes 122, helps to improve the reliability and firmness of the connection between the wheel hub bearing and the fixing holes 122, and improves the reliability and stability of the connection between the wheel hub bearing and the knuckle 100.

[0059] The groove 123 can be recessed from the bearing mating surface 124 in a direction away from the wheel hub bearing, that is, the groove 123 is recessed from the bearing mating surface 124 in a direction towards the steering knuckle body 110, so that there is a gap between the groove 123 and the wheel hub bearing. This can effectively prevent the wheel hub bearing from contacting the bottom wall of the groove 123, and during the steering process of the vehicle, it can effectively reduce or avoid abnormal noises caused by the deformation of the double-wishbone steering knuckle 100.

[0060] Continue to refer to Figure 1 and Figure 2 As shown, the steering knuckle body 110 may have a first connecting portion 111, and the first connecting portion 111 can be used to connect to the upper swing arm of the vehicle, so that the double-wishbone steering knuckle 100 can be connected to the vehicle body. The double-wishbone steering knuckle 100 may also have a second connecting portion 112 and a third connecting portion 113, and the second connecting portion 112 and the third connecting portion 113 can be used to connect to the brake caliper of the vehicle, so that the brake caliper can be installed on the double-wishbone steering knuckle 100 through the second connecting portion 112 and the third connecting portion 113 to brake the wheel.

[0061] Continue to refer to Figure 1 and Figure 2 As shown, the steering knuckle body 110 may also have a fourth connecting portion 114, and the fourth connecting portion 114 can be connected to the steering tie rod of the vehicle. The reversing tie rod can pull the double-wishbone steering knuckle 100 to rotate, so as to drive the wheel to rotate through the double-wishbone steering knuckle 100, thereby realizing the steering of the vehicle.

[0062] Continue to refer to Figure 2 As shown, there may be a groove 123 between every two adjacent fixing holes 122. In other words, grooves 123 are provided in the circumferential direction of the bearing mounting hole 121, so that the wheel hub bearing and the bearing mounting hole 121 are in clearance fit in the circumferential direction. It can prevent the wheel hub bearing from contacting the outer peripheral part of the bearing mounting hole 121, thereby effectively avoiding abnormal noises caused by extrusion of the above-mentioned parts during vehicle steering.

[0063] It should be noted that the circumferential direction of the above-mentioned bearing mounting hole 121 does not mean that there are continuous grooves 123 in the entire circumferential direction of the bearing mounting hole 121. The groove 123 can be understood as the part of the circumferential direction of the bearing mounting hole 121 except the bearing mating surface 124.

[0064] Figure 4 This is a partial enlarged view of a double-wishbone steering knuckle provided by an embodiment of the present application.

[0065] Refer to Figure 4As shown, the fixing holes 122 may include a first fixing hole 1221, a second fixing hole 1222, a third fixing hole 1223, and a fourth fixing hole 1224 that are sequentially arranged around the outer periphery of the bearing mounting hole 121. The first fixing hole 1221, the second fixing hole 1222, the third fixing hole 1223, and the fourth fixing hole 1224 may be spaced apart and distributed around the outer periphery of the bearing mounting hole 121. The hub bearing may be connected to the first fixing hole 1221, the second fixing hole 1222, the third fixing hole 1223, and the fourth fixing hole 1224 respectively through bolt fasteners to achieve connection with the double-wishbone steering knuckle 100. This can effectively improve the firmness and reliability of the connection between the hub bearing and the steering knuckle 100, thereby effectively enhancing the structural stability of the vehicle steering system.

[0066] Among them, the groove 123 may include a first groove 1231 located between the first fixing hole 1221 and the second fixing hole 1222, a second groove 1232 located between the second fixing hole 1222 and the third fixing hole 1223, a third groove 1233 located between the third fixing hole 1223 and the fourth fixing hole 1224, and a fourth groove 1234 located between the fourth fixing hole 1224 and the first fixing hole 1221.

[0067] The first groove 1231, the second groove 1232, the third groove 1233, and the fourth groove 1234 may be spaced apart and distributed around the outer periphery of the bearing mounting hole 121 to maintain a clearance fit with the hub bearing. The steering knuckle 100 can maintain a clearance fit with the hub bearing in the circumferential direction of the bearing mounting hole 121, thereby preventing the double-wishbone steering knuckle 100 from deforming and making abnormal noises with the hub bearing.

[0068] Continue to refer to Figure 4 As shown, the circumferential length of the first groove 1231 may be L1, and the value of L1 may be 50 mm to 90 mm. For example, the circumferential length L1 of the first groove 1231 may be 50 mm, 70 mm, or 90 mm. This can effectively increase the area of the clearance fit between the hub bearing and the steering knuckle 100 at the first groove 1231, and can effectively reduce or avoid contact between the hub bearing and the steering knuckle 100 at the first groove 1231, thereby preventing the double-wishbone steering knuckle 100 from deforming due to the first groove 1231 and generating abnormal noises.

[0069] Continue to refer to Figure 4As shown, the circumferential length of the second groove 1232 can be L2, and the value of L2 can be 5 mm to 20 mm. For example, the circumferential length L2 of the second groove 1232 can be 5 mm, 10 mm, or 20 mm. Among them, according to the specific layout of the knuckle 100 and the hub bearing in the vehicle, the distance between the second fixing hole 1222 and the third fixing hole 1223 can be relatively close. Correspondingly, the length of the second groove 1232 between the second fixing hole 1222 and the third fixing hole 1223 is also correspondingly shorter, so as to avoid the adverse effect on the second fixing hole 1222 and the third fixing hole 1223 due to the too long length of the second groove 1232. While avoiding abnormal noise, it helps to improve the structural stability of the second fixing hole 1222 and the third fixing hole 1223.

[0070] Continue to refer to Figure 4 As shown, the circumferential length of the third groove 1233 can be L3, and the value of L3 can be 55 mm to 95 mm. For example, the circumferential length L3 of the third groove 1233 can be 55 mm, 75 mm, or 95 mm. This can effectively increase the area of the clearance fit between the hub bearing and the knuckle 100 at the third groove 1233, and can effectively reduce or avoid the contact between the hub bearing and the knuckle 100 at the third groove 1233, thereby avoiding the abnormal noise generated by the deformation of the double-wishbone knuckle 100 due to the third groove 1233.

[0071] Continue to refer to Figure 4 As shown, the circumferential length of the fourth groove 1234 can be L4, and the value of L4 can be 20 mm to 40 mm. For example, the circumferential length L4 of the fourth groove 1234 can be 20 mm, 30 mm, or 40 mm. Among them, according to the specific layout of the knuckle 100 and the hub bearing in the vehicle, the distance between the fourth fixing hole 1224 and the first fixing hole 1221 can be relatively close. Correspondingly, the length of the fourth groove 1234 between the fourth fixing hole 1224 and the first fixing hole 1221 is also correspondingly shorter, so as to avoid the adverse effect on the fourth fixing hole 1224 and the first fixing hole 1221 due to the too long length of the fourth groove 1234. While avoiding abnormal noise, it helps to improve the structural stability of the fourth fixing hole 1224 and the first fixing hole 1221.

[0072] Figure 5 is Figure 3 The enlarged view of area B in.

[0073] Refer to Figure 5 As shown, the depth of the groove 123 is 0.2 mm to 0.5 mm. For example, taking the first groove 1231 as an example, the depth of the ground groove 123 can be d, and the value of d can be 0.2 mm to 0.5 mm. For example, it can be 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm, etc.

[0074] Correspondingly, the depths of the second groove 1232, the third groove 1233, and the fourth groove 1234 can also be 0.2 mm to 0.5 mm. For example, the depths of the second groove 1232, the third groove 1233, and the fourth groove 1234 can be 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm, etc.

[0075] This can avoid the contact between the hub bearing and the bottom of the groove 123, and can effectively avoid the deformation of the bottom of the groove 123 and the generation of abnormal noises.

[0076] Moreover, the above depths basically have no influence on the structural strength and stiffness of the double-wishbone steering knuckle 100, which can avoid excessive depth of the groove 123 and reduce the structural strength and stiffness of the double-wishbone steering knuckle 100, while achieving noise reduction.

[0077] Among them, the depths of the first groove 1231, the second groove 1232, the third groove 1233, and the fourth groove 1234 can be equal, or the depths of the first groove 1231, the second groove 1232, the third groove 1233, and the fourth groove 1234 can also be unequal. Specifically, the depth relationship between the first groove 1231, the second groove 1232, the third groove 1233, and the fourth groove 1234 can be selected and set according to the specific application scenario.

[0078] The serial numbers of the embodiments of the present application above are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A double wishbone steering knuckle, characterized in that: The steering knuckle body (110) is provided with a bearing mounting seat (120), the bearing mounting seat (120) is provided with a bearing mounting hole (121), and the bearing mounting hole (121) is used for mounting a wheel hub bearing; The bearing mounting seat (120) is provided with a plurality of fixing holes (122), the fixing holes (122) are arranged around the outer circumference of the bearing mounting hole (121), and the fixing holes (122) are used to be connected to the wheel hub bearing; A groove (123) is provided on a surface of the bearing mounting seat (120) facing away from the steering knuckle body (110), wherein at least the groove (123) is provided between two adjacent fixing holes (122), and a groove bottom of the groove (123) is lower than a matching surface between the bearing mounting seat (120) and the wheel hub bearing, so that a clearance fit is achieved between the groove bottom of the groove (123) and the wheel hub bearing.

2. The double wishbone steering knuckle according to claim 1, characterized in that: The bearing mounting seat (120) has a bearing matching surface (124) on one side facing the wheel hub bearing, and the bearing matching surface (124) is in contact with the wheel hub bearing; The fixing hole (122) is formed on the bearing matching surface (124), and the groove (123) is recessed from the bearing matching surface (124) in a direction away from the wheel hub bearing, so that a gap exists between the groove (123) and the wheel hub bearing.

3. The double wishbone steering knuckle according to claim 1 or 2, characterized in that: The groove (123) is provided between every two adjacent fixing holes (122).

4. The double wishbone steering knuckle according to claim 3, characterized in that: The fixing hole (122) comprises a first fixing hole (1221), a second fixing hole (1222), a third fixing hole (1223) and a fourth fixing hole (1224) which are sequentially arranged around the outer periphery of the bearing mounting hole (121); The groove (123) includes a first groove (1231) located between the first fixing hole (1221) and the second fixing hole (1222), a second groove (1232) located between the second fixing hole (1222) and the third fixing hole (1223), a third groove (1233) located between the third fixing hole (1223) and the fourth fixing hole (1224), and a fourth groove (1234) located between the fourth fixing hole (1224) and the first fixing hole (1221).

5. The double wishbone steering knuckle according to claim 4, characterized in that: The depth of the groove (123) is 0.2 mm to 0.5 mm.

6. The double wishbone steering knuckle according to claim 4, characterized in that: The circumferential length of the first groove (1231) is 50 mm to 90 mm.

7. The double wishbone steering knuckle according to claim 4, characterized in that: The circumferential length of the second groove (1232) is 5 mm to 20 mm.

8. The double wishbone steering knuckle according to claim 4, characterized in that: The circumferential length of the third groove (1233) is 55 mm to 95 mm.

9. The double wishbone steering knuckle according to claim 4, characterized in that: The circumferential length of the fourth groove (1234) is 20 mm to 40 mm.

10. A vehicle, characterized in that: It comprises a wheel hub bearing and a double wishbone steering knuckle as claimed in any one of claims 1 to 9; The wheel hub bearing is matched with the bearing mounting hole (121) in the double wishbone steering knuckle, and the wheel hub bearing is clearance-matched with the groove (123) on the bearing mounting seat (120).

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