Vehicle steering assembly and vehicle

Abstract

The application discloses a vehicle steering assembly and a vehicle, and belongs to the technical field of vehicle steering assemblies. The vehicle steering assembly comprises a steering knuckle, a locking bolt, a nut sleeve, a first gasket and a bushing assembly. The steering knuckle is provided with a first threaded hole. The locking bolt comprises a bolt head and a shank. The bushing assembly is sleeved on the outer periphery of the shank. The bushing assembly is located between the bolt head and the first gasket. The nut sleeve is threadedly connected with the first threaded hole. The nut sleeve is provided with a second threaded hole. The second threaded hole is threadedly connected with the shank. The external thread of the nut sleeve has a first thread angle. The nut sleeve is provided with a first toothed portion. The first toothed portion comprises a first tooth surface. The inclination angle of the first tooth surface is greater than the first thread angle. The first gasket is sleeved on the outer periphery of the shank. The first gasket is provided with a second toothed portion. The second toothed portion comprises a second tooth surface which is matched with the first tooth surface. The inclination angle of the second tooth surface is greater than the first thread angle. The nut sleeve and the first gasket are locked with each other.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle steering assembly, in particular to a vehicle steering assembly and a vehicle. BACKGROUND

[0002] In order to save energy and reduce carbon emissions, the internal structure of the vehicle is manufactured by using a large amount of lightweight materials, among which a cast aluminum knuckle is widely used. In the related art, the knuckle is connected with the control arm through a bushing. In order to solve the stability and reliability of the knuckle connection, a nut sleeve and a bolt structure are used to lock the knuckle and the bushing. However, the nut sleeve and the knuckle are prone to loosening, and it is necessary to consider how to solve the loosening problem of the nut sleeve and the knuckle. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a vehicle steering assembly which can solve the loosening problem of the nut sleeve and the knuckle.

[0004] The present application also provides a vehicle comprising the above-mentioned vehicle steering assembly.

[0005] According to the vehicle steering assembly of the first aspect of the present application, the vehicle steering assembly comprises a knuckle provided with a first threaded hole; a locking bolt comprising a bolt head and a shank; a nut sleeve threadedly matched with the first threaded hole, the nut sleeve being provided with a second threaded hole, the second threaded hole being threadedly matched with the shank, the outer thread of the nut sleeve having a first thread angle, the nut sleeve having a first side and a second side arranged oppositely, the first side being provided with a plurality of first tooth portions arranged along the circumference of the nut sleeve, the first tooth portions comprising a first tooth surface, from the first side to the second side, the first tooth surface being inclined to an unlocking direction of the nut sleeve relative to the knuckle, a reference plane being defined as a plane perpendicular to the axis of the nut sleeve, the included angle between the first tooth surface and the reference plane being greater than the first thread angle; a first gasket sleeved on the outer periphery of the shank, one end of the first gasket being provided with a plurality of second tooth portions arranged along the circumference of the first gasket, the second tooth portions comprising a second tooth surface matched with the first tooth surface, the included angle between the second tooth surface and the reference plane being greater than the first thread angle; and a bushing member sleeved on the outer periphery of the shank, the bushing member being located between the bolt head and the first gasket.

[0006] The vehicle steering assembly according to the embodiments of the present application has at least the following beneficial effects: during assembly, the nut sleeve is first screwed into the first threaded hole of the steering knuckle, and then the first gasket, the bushing assembly and the locking bolt are assembled, specifically, the first gasket and the bushing assembly are respectively sleeved on the outer periphery of the shank portion of the locking bolt, the shank portion is matched with the second threaded hole of the nut sleeve, after the locking bolt is tightened, the bushing assembly is clamped between the first gasket and the head portion of the bolt, the first tooth portion on the nut sleeve is engaged with the second tooth portion of the first gasket, the first tooth surface of the first tooth portion and the second tooth surface of the second tooth portion abut, the included angle between the first tooth surface and the reference plane can be understood as the inclination angle of the first tooth surface, and the included angle between the second tooth surface and the reference plane can be understood as the inclination angle of the second tooth surface. The threaded cooperation between the nut sleeve and the steering knuckle can provide a certain pre-tightening force, the threaded cooperation between the nut sleeve and the locking bolt can also provide a certain pre-tightening force, the first gasket can play a loosening prevention role, and the locking of the steering knuckle and the bushing assembly is ensured. When the nut sleeve loosens, the nut sleeve has a tendency to rotate in the unlocking direction relative to the steering knuckle. Since the first thread angles of the external threads of the nut sleeve are all smaller than the inclination angles of the first tooth surface and the second tooth surface, the first tooth portion will be difficult to disengage from the second tooth portion, and the loosening of the nut sleeve will cause the first tooth surface to further abut against the second tooth surface, that is, the first gasket will hinder the rotation of the nut sleeve in the loosening direction, so that the nut sleeve is not easy to loosen. It can also be understood that the lift of the external threads of the nut sleeve is different from the lift of the first tooth portion, so that the nut sleeve and the first gasket are locked with each other, thereby playing a loosening prevention role on the nut sleeve and enhancing the fastening effect.

[0007] According to some embodiments of the present application, the first tooth portion includes a third tooth surface perpendicular to the reference plane, and the second tooth portion includes a fourth tooth surface perpendicular to the reference plane, and the third tooth surface is matched with the fourth tooth surface.

[0008] According to some embodiments of the present application, the first gasket has a third side and a fourth side arranged oppositely, the second tooth portion is located on the third side, and the fourth side is provided with an anti-skid structure for abutting against the bushing assembly, and the anti-skid structure is used to limit the relative rotation between the bushing assembly and the first gasket.

[0009] According to some embodiments of the present application, the anti-skid structure includes a plurality of anti-skid teeth arranged along the circumference of the first gasket, and the anti-skid teeth include an inclined surface for abutting against the bushing assembly, and the inclined surface is inclined to the unlocking direction of the locking bolt relative to the nut sleeve from the third side to the fourth side.

[0010] According to some embodiments of the present application, the nut sleeve includes a nut cap portion and a first flange portion, the first tooth portion is located at one end of the nut cap portion, and the flange portion is located at the other end of the nut cap portion. In the radial direction of the nut sleeve, the width of the first flange portion is greater than the width of the nut cap portion, and the first flange portion is used to abut against the steering knuckle.

[0011] According to some embodiments of the present application, one side of the knuckle is formed with an assembly hole in communication with the first threaded hole, a maximum inner diameter of the assembly hole is greater than a maximum inner diameter of the first threaded hole, and the first gasket is matched with the assembly hole.

[0012] According to some embodiments of the present application, an inner wall of the assembly hole is configured as an inner taper surface, a diameter of the inner taper surface gradually decreases from one side of the knuckle where the assembly hole is located to another side of the knuckle where the assembly hole is not located, and an outer periphery of the first gasket is provided with an outer taper surface matched with the inner taper surface.

[0013] According to some embodiments of the present application, the inner thread of the nut sleeve has a second thread angle, and the second thread angle is different from the first thread angle.

[0014] According to some embodiments of the present application, the locking bolt comprises a second flange portion located between the bolt head portion and the stud portion in the radial direction of the locking bolt, a width of the second flange portion is greater than a width of the bolt head portion, the vehicle steering assembly comprises a second gasket, one side of the second gasket abuts against the second flange portion, and another side of the second gasket abuts against the bushing assembly.

[0015] The vehicle according to the second aspect of the embodiments of the present application comprises the vehicle steering assembly according to the first aspect of the embodiments of the present application.

[0016] The vehicle according to the embodiments of the present application has at least the beneficial effects described above due to the vehicle steering assembly according to the first aspect of the embodiments of the present application, and details are not described herein again.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0019] Figure 1 A structural schematic view of the vehicle steering assembly according to some embodiments of the present application;

[0020] Figure 2 An exploded view of the vehicle steering assembly according to some embodiments of the present application;

[0021] Figure 3 A top view of the vehicle steering assembly according to some embodiments of the present application;

[0022] Figure 4 A structural schematic view of the vehicle steering assembly according to some embodiments of the present application; Figure 3 An enlarged view of A in FIG. 4;

[0023] Figure 5 For Figure 3 Enlarged view at B;

[0024] Figure 6 Structural schematic view of a first gasket of a vehicle steering assembly according to some embodiments of the present application;

[0025] Figure 7 Structural schematic view of a first gasket of a vehicle steering assembly according to some embodiments of the present application;

[0026] Figure 8 Structural schematic view of a nut sleeve of a vehicle steering assembly according to some embodiments of the present application.

[0027] Reference signs:

[0028] Vehicle steering assembly 1000;

[0029] Knuckle 100, first threaded hole 110, assembly hole 120, inner taper surface 121;

[0030] Locking bolt 200, bolt head 210, stud portion 220, second flange portion 230;

[0031] Nut sleeve 300, second threaded hole 310, first tooth portion 320, first tooth surface 321, third tooth surface 322, external thread 330, nut cap portion 340, first flange portion 350;

[0032] First gasket 400, second tooth portion 410, second tooth surface 411, fourth tooth surface 412, anti-slip teeth 420, inclined surface 421, outer taper surface 430;

[0033] Bushing assembly 500;

[0034] Second gasket 600. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and letters in the drawing and the following description denote the same or like elements or components. The embodiments described below are exemplary and not intended to be limiting of the scope of the application, as defined by the appended claims.

[0036] Referring to Figure 1 and Figure 2 , a vehicle steering assembly 1000 according to some embodiments of the present application is shown, the vehicle steering assembly 1000 comprising a knuckle 100, a locking bolt 200, a nut sleeve 300, a first gasket 400, and a bushing assembly 500. Referring to Figure 2 and Figure 3As shown, the knuckle 100 is provided with a first threaded hole 110, the locking bolt 200 includes a bolt head 210 and a stud portion 220, the outer peripheral wall of the nut sleeve 300 is provided with an external thread 330, the bushing assembly 500 is a sleeve structure, the bushing assembly 500 is sleeved on the outer periphery of the stud portion 220, the bushing assembly 500 is located between the bolt head 210 and the first gasket 400, the bushing assembly 500 is used to be connected with the control arm, and the locking knuckle 100 and the bushing assembly 500 can guarantee that the locking knuckle 100 is locked with the control arm. Referring to Figure 4 and Figure 8 As shown, the nut sleeve 300 has a first side and a second side arranged oppositely, the first side of the nut sleeve 300 is provided with a plurality of first tooth portions 320 arranged along the circumference of the nut sleeve 300, the first tooth portion 320 includes a first tooth surface 321, and the first tooth surface 321 is arranged obliquely. Referring to Figure 4 and Figure 7 As shown, one end of the first gasket 400 is provided with a plurality of second tooth portions 410 arranged along the circumference of the first gasket 400, the second tooth portion 410 includes a second tooth surface 411, and the second tooth surface 411 is arranged obliquely. In addition, the first tooth portion 320 and the second tooth portion 410 can be understood as wedge-shaped teeth.

[0037] Specifically, the reference plane is defined as a plane perpendicular to the axis of the nut sleeve 300. Figure 3 In the middle, the axis X can be understood as the axis of the locking bolt 200, the nut sleeve 300 or the first gasket 400, the reference plane mentioned above is perpendicular to the axis X, the unlocking direction of the nut sleeve 300 relative to the knuckle 100 is Y1, that is, rotating the nut sleeve 300 in the Y1 direction will cause the nut sleeve 300 to loosen the knuckle 100, the unlocking direction of the locking bolt 200 relative to the nut sleeve 300 is Y2, that is, rotating the locking bolt 200 in the Y2 direction will cause the locking bolt 200 to loosen the nut sleeve 300, the unlocking direction Y1 and the unlocking direction Y2 can be understood as the circumferential direction, Y1 and Y2 are opposite directions, generally, the unlocking direction Y1 is counterclockwise, and the unlocking direction Y2 is clockwise. Referring to Figure 4As shown, the thread angle of the external thread 330 is θ1, which can also be understood as the included angle between the tangent of the helix of the external thread 330 and the reference plane, and the size of θ1 determines the size of the moving distance of the nut sleeve 300 along the axis X after one rotation, the greater the θ1, the greater the moving distance of the nut sleeve 300 along the axis X after one rotation. From the first side of the nut sleeve 300 to the second side of the nut sleeve 300, the first tooth surface 321 is inclined to the unlocking direction Y1, and the included angle between the first tooth surface 321 and the reference plane is θ2. In order to enable the first tooth surface 321 to cooperate with the second tooth surface 411, the included angle between the second tooth surface 411 and the reference plane can be equal to θ2, and θ2 is greater than θ1, which can also be understood as the lift of the external thread 330 is greater than the lift of the first tooth surface 321, when the first tooth surface 321 cooperates with the second tooth surface 411, the nut sleeve 300 is not easy to rotate to the Y1 direction. In some other embodiments, the included angle between the second tooth surface 411 and the reference plane can also be slightly smaller than θ2 or slightly larger than θ2.

[0038] Referring to Figure 2 As shown, in the assembly of the above-mentioned vehicle steering assembly 1000, the nut sleeve 300 is first screwed into the first threaded hole 110 of the steering knuckle 100, and then the first gasket 400, the bushing assembly 500 and the locking bolt 200 are assembled. Specifically, the first gasket 400 and the bushing assembly 500 are respectively sleeved on the outer periphery of the stud portion 220 of the locking bolt 200, the stud portion 220 cooperates with the second threaded hole 310 of the nut sleeve 300, after the locking bolt 200 is tightened, the bushing assembly 500 is clamped between the first gasket 400 and the bolt head portion 210, the first tooth portion 320 on the nut sleeve 300 is engaged with the second tooth portion 410 of the first gasket 400, and the first tooth surface 321 of the first tooth portion 320 abuts against the second tooth surface 411 of the second tooth portion 410. The threaded cooperation between the nut sleeve 300 and the steering knuckle 100 can provide a certain pre-tightening force, and the threaded cooperation between the nut sleeve 300 and the locking bolt 200 can also provide a certain pre-tightening force, and the first gasket 400 can play a loosening prevention role to ensure that the steering knuckle 100 and the bushing assembly 500 are locked. Referring to Figure 4As shown, when the nut sleeve 300 is loosened, the nut sleeve 300 has a tendency to rotate in the unlocking direction Y1, and because the thread angle θ1 of the external thread 330 of the nut sleeve 300 is smaller than the inclination angle θ2 of the first tooth surface 321, the first tooth portion 320 is difficult to disengage from the second tooth portion 410, and the first tooth surface 321 further abuts against the second tooth surface 411, that is, the first washer 400 hinders the rotation of the nut sleeve 300 in the loosening direction, so that the nut sleeve 300 is not easy to loosen. It can be understood that the lift of the external thread 330 of the nut sleeve 300 is different from the lift of the first tooth surface 321, that is, the nut sleeve 300 rotates by a certain angle, and the relative movement distance of the knuckle 100 is not enough to disengage the first tooth portion 320 from the second tooth portion 410, so that the nut sleeve 300 and the first washer 400 are locked with each other, and the loosening of the nut sleeve 300 is prevented, and the fastening effect is enhanced.

[0039] In addition, when part of the structure in the vehicle steering assembly 1000 is subjected to creep and collapses, the threads of the nut sleeve 300 or the locking bolt 200 are easy to loosen, and the nut sleeve 300 can generate a lift during the loosening process, thereby generating an axial force, which acts on the first washer 400 and abuts against each other through the cooperation of the first tooth surface 321 and the second tooth surface 411, so as to compensate for the creep deformation, maintain the connection shaft force, ensure the reliability of the connection structure, and have the effect of preventing creep.

[0040] From another angle, referring to Figure 4 As shown, in the working process, the bushing assembly 500 generates a torque in the Y2 direction on the first washer 400, and the torque generates an axial force F2, and the direction of the force F2 can be understood as being opposite to the direction of the force F1. Figure 3The axis X in the first tooth surface 321 is parallel, and because the first tooth surface 321 cooperates with the second tooth surface 411, F2 can be decomposed into F21 and F22, wherein the direction of F21 is parallel to the first tooth surface 321, the direction of F22 is perpendicular to the first tooth surface 321, F21=F2*sinθ2, F22=F2*cosθ2, F22 can be understood as the support force of the first tooth surface 321 to the second tooth surface 411, the friction between the first tooth surface 321 and the second tooth surface 411 is related to F22, the greater F22 is, the greater the friction is, because the direction of F21 is generally toward the Y1 direction, F21 can be understood as the loosening force acting on the first gasket 400, the first gasket 400 is easy to rotate toward the Y1 direction under the action of F21. It should be noted that because the first gasket 400 abuts against the nut sleeve 300, F2 will be transmitted to the nut sleeve 300, the nut sleeve 300 is subjected to the axial force F1, and F2=F1, at a certain point of the external thread 330, F1 can be decomposed into F11 and F12, wherein the direction of F11 is parallel to the tangent of the external thread 330 at the point, and the direction of F12 is perpendicular to the tangent, F11=F1*sinθ1, F12=F2*cosθ1, F12 can be understood as the support force of the external thread 330 of the nut sleeve 300 to the internal thread of the first threaded hole 110, the friction between the external thread 330 of the nut sleeve 300 and the internal thread of the first threaded hole 110 is related to F12, the greater F12 is, the greater the friction is, because the direction of F11 is generally toward the Y1 direction, F11 can be understood as the loosening force acting on the nut sleeve 300, the nut sleeve 300 is easy to rotate toward the Y1 direction under the action of F11. Under the condition of equal axial force, because θ1<θ2, it can be known that F11<F21, that is, the loosening force acting on the nut sleeve 300 is smaller than the loosening force acting on the first gasket 400, and F22>F21, that is, the friction between the first gasket 400 and the nut sleeve 300 is smaller than the friction between the nut sleeve 300 and the first threaded hole 110, when the nut sleeve 300 is loosened by the axial force, the first gasket 400 is relatively easy to rotate relative to the nut sleeve 300, which can also be understood as allowing the first gasket 400 to rotate slightly in the Y1 direction relative to the nut sleeve 300, so that the second tooth surface 411 of the first gasket 400 further abuts against the first tooth surface 321 of the nut sleeve 300, interlocking is realized, thereby avoiding that the nut sleeve 300 rotates first, and playing a loosening prevention role on the nut sleeve 300.

[0041] In the above embodiments, since the unlocking direction Y1 and the unlocking direction Y2 are opposite to each other, it can be known that the locking direction of the nut sleeve 300 relative to the steering knuckle 100 is opposite to the locking direction of the locking bolt 200 relative to the nut sleeve 300. When tightening the nut sleeve 300 and the locking bolt 200, a tightening force can be applied to the nut sleeve 300 in the Y2 direction, and a tightening force can be applied to the locking bolt 200 in the Y1 direction. The nut sleeve 300 and the locking bolt 200 can be tightened at the same time. The different tightening directions of the nut sleeve 300 and the locking bolt 200 facilitate the application of force. Furthermore, since the unlocking directions Y1 and Y2 are opposite, when the locking bolt 200 loosens in the Y2 direction, it will also cause the nut sleeve 300 to rotate in the Y2 direction via the first washer 400 and the bushing 500. Because Y2 is the locking direction of the nut sleeve 300, this allows the nut sleeve 300 to be further tightened, counteracting the loosening movement of the locking bolt 200 and achieving an interlocking effect. Similarly, when the threaded sleeve loosens in the Y1 direction, it will cause the locking bolt 200 to rotate in the Y1 direction via the first washer 400 and the bushing 500. Because Y1 is the locking direction of the locking bolt 200, this allows the locking bolt 200 to be further tightened, counteracting the loosening movement of the threaded sleeve and achieving an interlocking effect. In some other embodiments, the unlocking directions Y1 and Y2 may also be the same.

[0042] In some embodiments, refer to Figure 4 As shown, the first tooth portion 320 includes a third tooth surface 322 perpendicular to the reference plane, and the second tooth portion 410 includes a fourth tooth surface 412 perpendicular to the reference plane. When the third tooth surface 322 and the fourth tooth surface 412 mate, they can restrict the first washer 400 from rotating relative to the nut sleeve 300 in the Y1 direction, or restrict the nut sleeve 300 from rotating relative to the first washer 400 in the Y2 direction. When assembling the vehicle steering assembly 1000, it is necessary to tighten the nut sleeve 300 in the Y2 direction and simultaneously tighten the locking bolt 200 in the Y1 direction. The mating of the third tooth surface 322 and the fourth tooth surface 412 can restrict the locking bolt 200 from driving the first washer 400 to rotate in the Y1 direction, which can also be understood as restricting the rotation of the first washer 400 relative to the nut sleeve 300, ensuring that the first washer 400 can be tightened and providing a good anti-loosening effect.

[0043] In some other embodiments, the third tooth surface 322 may not be perpendicular to the reference plane, and the third tooth surface 322 may form a certain angle with the reference plane. Similarly, the fourth tooth surface 412 may not be perpendicular to the reference plane, and the fourth tooth surface 412 may form a certain angle with the reference plane.

[0044] It can be understood that, in some embodiments, the first gasket 400 has a third side and a fourth side arranged oppositely, the second tooth portion 410 is located on the third side of the first gasket 400, and the fourth side of the first gasket 400 is provided with an anti-skid structure for abutting against the bushing assembly 500. The anti-skid structure can limit the relative rotation between the bushing assembly 500 and the first gasket 400, play an anti-skid role, make the first gasket 400 not easy to loosen, and enhance the fastening effect of the knuckle 100 and the bushing assembly 500. In some embodiments, the abutting surface of the anti-skid structure against the bushing assembly 500 is relatively rough, so that the friction between the anti-skid structure and the bushing assembly 500 is relatively large, and the relative rotation between the bushing assembly 500 and the first gasket 400 can be limited. In some embodiments, the bushing assembly 500 is made of rubber, polyurethane or other materials, so that the bushing assembly 500 has a certain elasticity, and the anti-skid structure can be configured as a sharp tooth structure, the sharp end of the sharp tooth structure abuts against the end surface of the bushing assembly 500. It can be understood that the sharp tooth structure pierces into the bushing assembly 500, and hinders the rotation of the first gasket 400 relative to the bushing assembly 500.

[0045] Referring to Figure 5 It can be understood that, in some embodiments, the anti-skid structure is mainly used to limit the relative rotation between the bushing assembly 500 and the first gasket 400 in the direction Y2. Specifically, the anti-skid structure includes a plurality of anti-skid teeth 420 arranged along the circumference of the first gasket 400, the anti-skid teeth 420 include inclined surfaces 421 for abutting against the bushing assembly 500, and the inclined surfaces 421 are inclined in the direction Y1 from the third side of the first gasket 400 to the fourth side of the first gasket 400. It can be understood that the inclination direction of the inclined surfaces 421 is opposite to the inclination direction of the second tooth surface 411. The anti-skid teeth 420 form sharp ends, the bushing assembly 500 has a certain elasticity, the sharp ends can pierce into the bushing assembly 500, and when the bushing assembly 500 rotates relative to the first gasket 400 in the direction Y2 or the first gasket 400 rotates relative to the bushing assembly 500 in the direction Y1, the anti-skid teeth 420 have relatively large resistance to the bushing assembly 500, so that the relative rotation of the bushing assembly 500 can be limited. In addition, when assembling the vehicle steering assembly 1000, it is necessary to tighten the locking bolt 200 in the direction Y1, the locking bolt 200 will press the bushing assembly 500 and drive the bushing assembly 500 to move in the direction Y1 relative to the anti-skid teeth 420. Since the inclined surfaces 421 are inclined toward the direction Y1, when the bushing assembly 500 moves in the direction Y1 relative to the anti-skid teeth 420, the end surface of the bushing assembly 500 will slide along the inclined surfaces 421. Compared with the rotation of the bushing assembly 500 relative to the anti-skid teeth 420 in the direction Y2, the resistance is smaller, which is beneficial to the assembly operation. In some embodiments, the cross section of the anti-skid tooth 420 is triangular, and specifically can be a right-angled triangle. In other embodiments, the cross section of the anti-skid tooth 420 can also be a right-angled trapezoid.

[0046] It can be understood that, referring to Figure 3 and Figure 8As shown, in some embodiments, the nut sleeve 300 comprises a nut portion 340 and a first flange portion 350, the first tooth portion 320 is located at one end of the nut portion 340, and the first flange portion 350 is located at the other end of the nut portion 340 along the radial direction of the nut sleeve 300, the width of the first flange portion 350 is greater than the width of the nut portion 340, after the nut sleeve 300 is tightened in the first threaded hole 110 of the knuckle 100, the nut portion 340 is located in the first threaded hole 110, and the first flange portion 350 is located outside the first threaded hole 110, the first flange portion 350 abuts against the outer wall of the knuckle 100, which can keep the nut sleeve 300 locked with the knuckle 100. In some embodiments, the first flange portion 350 has a polygonal structure, which can facilitate the cooperation of the outer peripheral wall of the first flange portion 350 with the tightening tool, thereby facilitating the tightening of the nut sleeve 300.

[0047] It can be understood that, with reference to Figure 3 As shown, in some embodiments, one side of the knuckle 100 is formed with an assembly hole 120 communicating with the first threaded hole 110, the maximum inner diameter of the assembly hole 120 is greater than the maximum inner diameter of the first threaded hole 110, the first gasket 400 cooperates with the assembly hole 120, and at least part of the structure of the first gasket 400 is located in the assembly hole 120. It can be understood that, the locking bolt 200 abuts against the inner wall of the assembly hole 120 with the first gasket 400, so that the first gasket 400 has friction with the inner wall of the assembly hole 120, and the first gasket 400 is not easy to rotate relative to the knuckle 100, thereby enhancing the anti-loosening effect. Moreover, the first tooth portion 320 and the second tooth portion 410 are located in the first threaded hole 110, and the knuckle 100 can shield the first tooth portion 320 and the second tooth portion 410, so that the first tooth portion 320 and the second tooth portion 410 are not disturbed by external environmental factors, thereby protecting the first tooth portion 320 and the second tooth portion 410.

[0048] It can be understood that, with reference to Figure 3 As shown, in some embodiments, the inner wall of the assembly hole 120 is configured as an inner tapered surface 121, which gradually decreases in diameter from the side of the knuckle 100 provided with the assembly hole 120 to the side of the knuckle 100 away from the assembly hole 120, with reference to Figure 3 and Figure 7 As shown, the outer peripheral wall of the first gasket 400 is provided with an outer tapered surface 430 cooperating with the inner tapered surface 121. The cooperation between the inner tapered surface 121 and the outer tapered surface 430 has a larger contact area, which can reduce the stress on the threads, effectively transmit the force of the two-force rod transmitted by the control arm to the knuckle 100, and reduce the stress on the threads.

[0049] It can be understood that, with reference to Figure 2As shown, in some embodiments, the locking bolt 200 comprises a second flange portion 230 located between the bolt head portion 210 and the shank portion 220, the vehicle steering assembly 1000 comprises a second gasket 600 located between the second flange portion 230 and the bushing assembly 500, one side of the second gasket 600 abuts the second flange portion 230, and the other side of the second gasket 600 abuts the bushing assembly 500, thereby preventing the relative rotation between the second flange portion 230 and the bushing assembly 500, and achieving the anti-loosening effect. In the radial direction of the locking bolt 200, the width of the second flange portion 230 is greater than the width of the bolt head portion 210, and the maximum width of the second gasket 600 is greater than the maximum width of the second flange portion 230, thereby increasing the contact area between the second flange portion 230 and the second gasket 600 and improving the friction.

[0050] In some embodiments, the inner thread of the nut sleeve 300 cooperates with the first threaded hole 110, the thread angle of the inner thread of the nut sleeve 300 is θ3, and the thread angle of the outer thread of the nut sleeve 300 is different from the thread angle of the outer thread 330 of the nut sleeve 300, that is, θ3 is different from θ1, and θ3 can be greater than or less than θ1, so that the lift of the inner thread of the nut sleeve 300 is inconsistent with the lift of the outer thread 330 of the nut sleeve 300, or it can be understood that when the nut sleeve 300 is loosened and rotated by a certain angle, the movement distance of the nut sleeve 300 on the axis X relative to the knuckle 100 is different from the movement distance of the nut sleeve 300 on the axis X relative to the locking bolt 200, which will lock the nut sleeve 300 and the locking bolt 200 with each other, thereby achieving the interlocking function.

[0051] It should be noted that different measuring tools can be used to measure the thread angle of the nut sleeve 300, for example, thread ring plug gauges and card board measurement, thread micrometer measurement, or tooth thickness vernier caliper measurement. The inclination angles of the first tooth surface 321, the second tooth surface 411, the third tooth surface 321, and the fourth tooth surface 412 can also be measured by using conventional measurement methods.

[0052] Some embodiments of the present application also provide a vehicle comprising the vehicle steering assembly 1000 of the above-mentioned embodiments, thus having the above-mentioned technical effects, and the fastening effect of the knuckle 100 and the control arm is good, and the knuckle 100 and the control arm are not easy to loosen, which can ensure safety. The vehicle steering assembly 1000 can be used in the front wheel steering system of the vehicle, and can also be used in the rear wheel steering system of the vehicle.

[0053] It should be noted that the vehicle described above can be a private car, such as a sedan, an SUV, an MPV, or a pickup truck, etc. The vehicle can also be an operating vehicle, such as a van, a bus, a small truck, or a large trailer, etc. The vehicle needs to have an electric motor that can output power or store mechanical energy as a generator. When the vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0054] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0055] In the description of the present application, if the first, second, etc. are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0056] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0057] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A vehicle steering assembly, characterized in that, include: The steering knuckle is provided with a first threaded hole; Locking bolt, including bolt head and stud portion; A nut sleeve is threadedly engaged with the first threaded hole. The nut sleeve has a second threaded hole that is threadedly engaged with the stud portion. The external thread of the nut sleeve has a first thread helix angle. The nut sleeve has a first side and a second side that are opposite to each other. The first side has a plurality of first teeth arranged circumferentially along the nut sleeve. Each first tooth includes a first tooth surface extending from the first side to the second side. The first tooth surface is inclined toward the unlocking direction of the nut sleeve relative to the steering knuckle. A reference plane is defined as a plane perpendicular to the axis of the nut sleeve. The included angle between the first tooth surface and the reference plane is greater than the first thread helix angle. A first washer is sleeved on the outer periphery of the stud portion. One end of the first washer is provided with a plurality of second teeth arranged along the circumference of the first washer. The second teeth include a second tooth surface that mates with the first tooth surface. The included angle between the second tooth surface and the reference plane is greater than the first thread helix angle. A bushing is fitted around the outer periphery of the stud portion, and the bushing is located between the bolt head and the first washer; The first tooth portion includes a third tooth surface perpendicular to the reference plane, and the second tooth portion includes a fourth tooth surface perpendicular to the reference plane, wherein the third tooth surface mates with the fourth tooth surface; The first pad has a third side and a fourth side facing away from each other, the second tooth is located on the third side, and the fourth side is provided with an anti-slip structure that abuts against the liner to restrict the relative rotation of the liner and the first pad. The anti-slip structure includes a plurality of anti-slip teeth arranged circumferentially along the first pad, each anti-slip tooth including an inclined surface for abutting against the bushing, extending from the third side to the fourth side, the inclined surface being inclined toward the unlocking direction of the locking bolt relative to the nut sleeve; One side of the steering knuckle has an assembly hole that communicates with the first threaded hole. The maximum inner diameter of the assembly hole is greater than the maximum inner diameter of the first threaded hole. The first gasket mates with the assembly hole. The inner wall of the assembly hole is constructed as an inner conical surface. From the side of the steering knuckle with the assembly hole to the side of the steering knuckle away from the assembly hole, the diameter of the inner conical surface gradually decreases. The outer periphery of the first gasket has an outer conical surface that mates with the inner conical surface. The internal thread of the nut sleeve has a second thread helix angle, which is different from the first thread helix angle.

2. The vehicle steering assembly according to claim 1, characterized in that, The nut sleeve includes a nut portion and a first flange portion. The first tooth portion is located at one end of the nut portion, and the flange portion is located at the other end of the nut portion. Along the radial direction of the nut sleeve, the width of the first flange portion is greater than the width of the nut portion. The first flange portion is used to abut against the steering knuckle.

3. The vehicle steering assembly according to claim 1, characterized in that, The locking bolt includes a second flange portion located between the bolt head and the stud portion. Along the radial direction of the locking bolt, the width of the second flange portion is greater than the width of the bolt head. The vehicle steering assembly includes a second washer, one side of which abuts against the second flange portion, and the other side of which abuts against the bushing.

4. A vehicle, characterized in that, Includes the vehicle steering assembly as described in any one of claims 1 to 3.

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