Steering knuckle, steering assembly and vehicle

Abstract

A steering knuckle, a steering assembly and a vehicle are characterized in that a first mounting hole and a second mounting hole are defined by the steering knuckle, the first mounting hole and the second mounting hole are communicated and coaxially arranged, the first mounting hole is suitable for being connected with an outer ring of a hub bearing in a matched mode, an inner ring of the hub bearing is suitable for being connected with a transmission shaft, and the second mounting hole is suitable for containing a gear ring of the transmission shaft; the first mounting hole and the second mounting hole are formed, the first mounting hole and the second mounting hole are communicated and coaxially formed, the first mounting hole is suitable for being connected with the outer ring of the hub bearing in a matched mode, the inner ring of the hub bearing is suitable for being connected with the transmission shaft, and the second mounting hole is suitable for containing the gear ring of the transmission shaft, so that the gear ring is not prone to being invaded by water and dust; rust and dust accumulation of the gear ring are prevented, and failure of reading the rotating speed of the gear ring is avoided.

Description

Technical Field

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

[0002] The vehicle effectively transmits the power of the drive shaft to the wheels through the wheel hub bearings to ensure smooth power transmission. In the case of emergency braking, the anti-lock braking system (ABS) accurately reads the speed of the drive shaft ring gear to determine whether the wheel is about to lock. Then, the anti-lock braking system quickly adjusts the brake power based on this information to prevent the wheel from locking, thereby maintaining the stability and controllability of the vehicle.

[0003] The gear ring in the prior art is easily invaded by moisture and dust, and there is a problem that the gear ring is easily rusted and dusty, resulting in failure in reading the gear ring speed. Utility Model Content

[0004] The utility model aims to provide a steering knuckle, a steering assembly and a vehicle, so as to solve the problem in the prior art that the gear ring is easily invaded by moisture and dust, and the gear ring is easily rusted and dusted, resulting in failure in reading the gear ring speed.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a steering knuckle, which encloses a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are connected and coaxially arranged, the first mounting hole is suitable for being matched and connected with the outer ring of the wheel hub bearing, the inner ring of the wheel hub bearing is suitable for being connected with the transmission shaft, and the second mounting hole is suitable for accommodating the gear ring of the transmission shaft.

[0007] In one embodiment, the steering knuckle includes a main body and a first protrusion, the main body includes a first end face in the axial direction of the first mounting hole, the first protrusion is connected to the first end face, the first protrusion is a cylindrical component, the main body encloses the first mounting hole, and the main body and the first protrusion together enclose the second mounting hole.

[0008] In one embodiment, the steering knuckle further includes a second protrusion connected to an end of the main body facing away from the first protrusion, the second protrusion is a cylindrical component and encloses a receiving space, and the receiving space is suitable for receiving at least a portion of the outer ring.

[0009] In one implementation, a thickness of the second protrusion in a radial direction of the first mounting hole is G, which satisfies: 3mm≤G≤4mm.

[0010] In a second aspect, the utility model further provides a steering assembly, comprising a transmission shaft, a wheel hub bearing and a steering knuckle according to any one of the various embodiments of the first aspect, wherein the transmission shaft comprises a shaft body and a gear ring, the gear ring is arranged on the shaft body, the wheel hub bearing comprises an outer ring and an inner ring, the outer ring is sleeved on the inner ring and is rotatably connected to the inner ring, the outer ring is cooperatively connected to the first mounting hole, the inner ring is connected to the shaft body, and the gear ring is accommodated in the second mounting hole.

[0011] In one implementation manner, a minimum spacing distance between the inner circumferential wall surface of the second mounting hole and the gear ring is A, satisfying: 1mm≤A≤3mm.

[0012] In one embodiment, the transmission shaft further includes a boss connected to an end of the gear ring away from the first mounting hole; the minimum spacing distance between the inner circumferential wall surface of the second mounting hole and the boss is B, satisfying: 1.5mm≤B.

[0013] In one embodiment, the steering knuckle includes a main body and a first protrusion, the main body includes a first end face in the axial direction of the first mounting hole, the first protrusion is connected to the first end face, the main body encloses the first mounting hole, and the main body and the first protrusion together enclose the second mounting hole; the maximum spacing distance between the end face of the first protrusion facing away from the first end face and the end face of the boss facing away from the gear ring in the axial direction of the second mounting hole is C, satisfying: 2mm≤C.

[0014] In one embodiment, the length of the first protrusion protruding from the first end surface is D, and the length of the gear ring in the axial direction of the second mounting hole is E, satisfying: D≥E+C.

[0015] In one embodiment, the transmission shaft also includes a shaft body, the gear ring and the boss are both arranged in an annular manner on the shaft body, and the shaft body is connected to the inner ring; the minimum spacing distance between the end face of the first protrusion facing away from the first end face and the shaft body is F, satisfying: F≥1.5mm.

[0016] In one embodiment, the steering knuckle also includes a second protrusion, which is connected to an end of the main body facing away from the first protrusion, and the second protrusion is a cylindrical component and encloses a receiving space, and at least a portion of the outer ring is received in the receiving space; the minimum spacing distance between the inner circumferential wall surface of the second protrusion and the outer circumferential surface of the outer ring is L, satisfying: L ≥ 5mm.

[0017] In one embodiment, the minimum spacing distance between the end surface of the second protrusion facing away from the main body and the inner ring is H, which satisfies: 3mm≤H≤5mm.

[0018] In a third aspect, the present invention further provides a vehicle, comprising a steering assembly as described in any one of the various embodiments of the second aspect.

[0019] By setting a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are connected and coaxially arranged, the first mounting hole is suitable for being matched and connected with the outer ring of the wheel hub bearing, the inner ring of the wheel hub bearing is suitable for being connected with the transmission shaft, and the second mounting hole is suitable for accommodating the gear ring of the transmission shaft, so that the gear ring is not easily invaded by moisture and dust, preventing the gear ring from rusting and dust accumulation, and avoiding failure in reading the gear ring speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is an exploded view of a steering assembly of one embodiment;

[0022] Figure 2 is a cross-sectional view of a steering assembly of one embodiment;

[0023] Figure 3 is a structural diagram of a steering member of an embodiment;

[0024] Figure 4 A partial cross-sectional view of a steering assembly of an embodiment Figure Ⅰ ;

[0025] Figure 5 A partial cross-sectional view of a steering assembly of an embodiment Figure II .

[0026] Description of reference numerals:

[0027] 100-steering assembly;

[0028] 10-steering knuckle, 11-main body, 111-first mounting hole, 112-first fixing hole, 113-first side hole, 114-first connecting arm, 115-second connecting arm, 116-third connecting arm, 117-first end surface, 118-second end surface, 12-first protrusion, 13-second mounting hole, 14-second protrusion, 141-accommodating space;

[0029] 20-wheel hub bearing, 21-outer ring, 211-outer ring body, 212-connecting ear, 213-second fixing hole, 22-inner ring, 221-inner ring body, 222-wheel hub, 23-rolling element;

[0030] 30-transmission shaft, 31-gear ring, 32-shaft body, 321-receiving groove, 33-fixed shaft, 34-universal joint, 35-boss;

[0031] 40-fixing parts;

[0032] 50-brake disc;

[0033] 60-Fenders. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model 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 related listed items.

[0037] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] Please refer to Figure 1 and Figure 2 The utility model provides a steering knuckle 10, which encloses a first mounting hole 111 and a second mounting hole 13. The first mounting hole 111 and the second mounting hole 13 are connected and coaxially arranged. The first mounting hole 111 is suitable for being matched and connected with the outer ring 21 of the wheel hub bearing 20, the inner ring 22 of the wheel hub bearing 20 is suitable for being connected with the transmission shaft 30, and the second mounting hole 13 is suitable for accommodating the gear ring 31 of the transmission shaft 30.

[0039] Optionally, the steering knuckle 10 is further provided with a plurality of first fixing holes 112 on the outer circumferential side of the first mounting hole 111 and the second mounting hole 13, and the plurality of first fixing holes 112 are arranged at intervals along the circumferential direction, the outer ring 21 includes an outer ring body 211 and a plurality of connecting ears 212, and the plurality of connecting ears 212 are all provided with second fixing holes 213, and the plurality of first fixing holes 112 are arranged in a one-to-one correspondence with the plurality of second fixing holes 213, and are connected and fixed by a plurality of fixing members 40, so that the steering knuckle 10 is connected and fixed to the outer ring 21. Optionally, the fixing member 40 may be a bolt, a rivet bolt, a latch, etc., without limitation.

[0040] Optionally, the steering knuckle 10 is provided with a first side hole 113, which penetrates the outer surface of the steering knuckle 10 to the inner wall surface of the second mounting hole 13, and the second side hole is used for a wheel speed sensor (not shown) to extend into to read the rotation speed of the ring gear 31. Optionally, the rotation speed sensor is electrically connected to an anti-lock braking system (not shown) of the vehicle, and the anti-lock braking system determines whether the wheel (not shown) is locked by the rotation speed of the ring gear 31 and controls the magnitude of the brake power.

[0041] Optionally, the steering knuckle 10 further includes a first connecting arm 114, which is used to connect with a guide arm (not shown) and a subframe (not shown) to drive the steering knuckle 10 to rotate. Optionally, the steering knuckle 10 further includes a second connecting arm 115 and a third connecting arm 116, which are both used to connect with a suspension system (not shown) of a vehicle (not shown), and are connected to a chassis (not shown) of the vehicle through the suspension system. Optionally, the steering knuckle 10 can be made of a material that meets structural strength, wear resistance and is easy to process, specifically cast iron, cast steel, aluminum alloy, etc., without limitation.

[0042] The transmission shaft 30 transmits the power output by the engine to the wheels through the wheel hub bearing 20. The driver controls the steering wheel and drives the steering knuckle 10 to rotate through the steering rod to control the rotation of the wheels to achieve the driving direction of the covered vehicle. In the case of emergency braking, the anti-lock braking system accurately reads the rotation speed of the transmission shaft 30 ring gear 31 to determine whether the wheel is about to lock, and then quickly adjusts the brake power according to this information to prevent the wheel from locking, thereby maintaining the stability and controllability of the vehicle.

[0043] By setting the first mounting hole 111 and the second mounting hole 13, the first mounting hole 111 and the second mounting hole 13 are connected and coaxially arranged, the first mounting hole 111 is suitable for being matched and connected with the outer ring 21 of the hub bearing 20, the inner ring 22 of the hub bearing 20 is suitable for being connected with the transmission shaft 30, and the second mounting hole 13 is suitable for accommodating the ring gear 31 of the transmission shaft 30. Compared with the scheme in which the ring gear 31 is arranged outside the steering knuckle 10 and is directly exposed to the external environment, the ring gear 31 in this scheme is accommodated in the second mounting hole 13, so that the ring gear 31 is not easily invaded by moisture and dust, thereby preventing the ring gear 31 from rusting and dust accumulation, and avoiding failure in reading the rotation speed of the ring gear 31.

[0044] Please refer to Figure 1 and Figure 2 The steering knuckle 10 includes a main body 11 and a first protrusion 12. The main body 11 includes a first end face 117 in the axial direction of the first mounting hole 111. The first protrusion 12 is connected to the first end face 117. The first protrusion 12 is a cylindrical component. The main body 11 encloses the first mounting hole 111. The main body 11 and the first protrusion 12 jointly enclose a second mounting hole 13.

[0045] Optionally, the connection between the first protrusion 12 and the first end face 117 is rounded to reduce the stress effect at the connection between the first protrusion 12 and the main body 11, and improve the structural strength of the steering knuckle 10. Optionally, the end face of the first protrusion 12 facing away from the first end face 117 is an arc surface, and is smoothly connected to the outer peripheral surface of the first protrusion 12 and the inner peripheral wall surface of the second mounting hole 13.

[0046] Optionally, the thickness of the first protrusion 12 in the radial direction of the second mounting hole 13 gradually decreases from the direction close to the first end surface 117 to the direction away from the first end surface 117. Optionally, the main body 11 and the first protrusion 12 can be an integrated structure, or can be detachably connected by means of clamping, screwing, riveting, etc., without limitation.

[0047] The steering knuckle 10 includes a main body 11 and a first protrusion 12, the main body 11 includes a first end face 117 in the axial direction of the first mounting hole 111, the first protrusion 12 is connected to the first end face 117, the first protrusion 12 is a cylindrical component, the main body 11 encloses the first mounting hole 111, and the main body 11 and the first protrusion 12 together enclose the second mounting hole 13, so that the steering knuckle 10 can form the second mounting hole 13, and the ring gear 31 is less connected to the external environment under the isolation effect of the first protrusion 12, so that the ring gear 31 is not easily invaded by moisture and dust, and the ring gear 31 is prevented from rusting and dust accumulation, and the reading of the rotation speed of the ring gear 31 is avoided.

[0048] Please refer to Figures 1 to 3The steering knuckle 10 also includes a second protrusion 14 , which is connected to one end of the main body 11 facing away from the first protrusion 12 . The second protrusion 14 is a cylindrical component and encloses a receiving space 141 . The receiving space 141 is suitable for receiving at least a portion of the outer ring 21 .

[0049] Optional, please refer to Figure 3 The main body 11 further includes a second end surface 118 , the second protrusion 14 is connected to the second end surface 118 , the plurality of first fixing holes 112 all extend from the first end surface 117 to the second end surface 118 , and the spacing distances between the plurality of first fixing holes 112 and the inner peripheral wall of the second protrusion 14 are the same.

[0050] Optionally, in the axial orthographic projection of the first mounting hole 111, the contour shape of the receiving space 141 corresponds to the contour shape of the outer ring 21, and the inner wall surface of the receiving space 141 and the outer peripheral surface of the outer ring 21 have the same spacing distance at any position. Optionally, the inner wall surface of the receiving space 141 may contact the outer peripheral surface of the outer ring 21, or may have a spacing distance, without limitation.

[0051] Optionally, the connection between the second protrusion 14 and the second end surface 118 is chamfered to reduce the stress effect at the connection between the second protrusion 14 and the main body 11 and improve the structural strength of the steering knuckle 10. Optionally, the connection between the end surface of the second protrusion 14 facing away from the second end surface 118 and the outer peripheral surface of the second protrusion 14 is chamfered.

[0052] Optionally, the thickness of the second protrusion 14 in the radial direction of the second mounting hole 13 gradually decreases from the direction close to the second end surface 118 to the direction away from the second end surface 118. Optionally, the main body 11 and the second protrusion 14 can be an integral structure, or can be detachably connected by means of snap connection, screw connection, riveting, etc., without limitation.

[0053] By providing a second protrusion 14, the second protrusion 14 is connected to one end of the main body 11 facing away from the first protrusion 12. The second protrusion 14 is a cylindrical component and encloses a receiving space 141. The receiving space 141 is suitable for receiving at least a part of the outer ring 21, so that the outer peripheral surface of the outer ring 21 and the gap between the outer ring 21 and the inner ring 22 are not easily invaded by moisture and dust under the insulating effect of the second protrusion 14, thereby preventing the wheel hub bearing 20 from rusting and dust accumulation, and extending the service life of the wheel hub bearing 20.

[0054] Please refer to Figure 4, the thickness of the second protrusion 14 in the radial direction of the first mounting hole 111 is G, which satisfies: 3mm≤G≤4mm. Specifically, G can be 3.2mm, 3.4mm, 3.6mm, 3.8mm and 4mm, etc., without limitation. Optionally, the thickness of the second protrusion 14 at any position in the axial direction of the first mounting hole 111 can be the same, or the thickness of the second protrusion 14 in the radial direction of the second mounting hole 13 can gradually decrease or increase from the direction close to the second end face 118 to the direction away from the second end face 118, without limitation.

[0055] Optionally, when G is less than 3 mm, the thickness of the second protrusion 14 is too small, so that the structural strength of the second protrusion 14 is difficult to meet the preset requirements, and it is easy to deform or damage due to factors such as high temperature or stress during operation. Optionally, when G is greater than 4 mm, the thickness of the second protrusion 14 is too large, which is not conducive to the lightweight of the steering knuckle 10 and increases the product cost.

[0056] By setting the thickness of the second protrusion 14 in the radial direction of the first mounting hole 111 to G, the following condition is satisfied: 3mm≤G≤4mm. Thus, the second protrusion 14 has sufficient structural strength and is not easily damaged, thereby effectively ensuring the isolation effect on the outer ring 21, so that the outer peripheral surface of the outer ring 21 and the gap between the outer ring 21 and the inner ring 22 are not easily invaded by moisture and dust, thereby preventing the wheel hub bearing 20 from rusting and dust accumulation, and extending the service life of the wheel hub bearing 20.

[0057] Please refer to Figure 1 and Figure 2 The utility model also provides a steering assembly 100, including a transmission shaft 30, a wheel hub bearing 20 and a steering knuckle 10 in an embodiment of the utility model, the transmission shaft 30 includes a shaft body 32 and a ring gear 31, the ring gear 31 is arranged around the shaft body 32, the wheel hub bearing 20 includes an outer ring 21 and an inner ring 22, the outer ring 21 is sleeved on the inner ring 22 and is rotatably connected to the inner ring 22, the outer ring 21 is matched and connected to the first mounting hole 111, the inner ring 22 is connected to the shaft body 32, and the ring gear 31 is received in the second mounting hole 13.

[0058] Optionally, the outer ring 21 includes an outer ring body 211 and a plurality of connecting ears 212, and the plurality of connecting ears 212 are arranged at intervals along the outer circumference of the outer ring body 211 in the circumferential direction. The outer ring body 211 is sleeved on the inner ring 22 and is rotatably connected to the inner ring 22, and at least partially extends into the aforementioned receiving space 141. The plurality of connecting ears 212 are used to be connected and fixed to the steering knuckle 10, and each connecting ear 212 is provided with the aforementioned second fixing hole 213, and the aforementioned first mounting hole 111 is cooperatively connected with the outer ring body 211.

[0059] Optionally, the inner ring 22 includes an inner ring body 221 and a wheel hub 222, the wheel hub 222 is connected to one end of the inner ring body 221 in the axial direction, the inner ring body 221 is rotatably connected to the outer ring body 211, the wheel hub 222 is located at one end of the inner ring body 221 away from the steering connection, and the wheel hub 222 is used to connect to the wheel of the vehicle. Optionally, the inner circumferential surface of the inner ring body 221 and the transmission shaft 30 are both provided with splines that cooperate with each other, so that the transmission shaft 30 can drive the inner ring 22 to rotate.

[0060] Optionally, a plurality of rolling elements 23 are further provided between the outer ring body 211 and the inner ring body 221 to relatively fix the outer ring body 211 and the inner ring body 221 in the radial and axial directions of the hub bearing 20, and to rotationally connect the outer ring body 211 and the inner ring body 221. The rolling elements 23 may be balls, rollers, etc., without limitation.

[0061] Optionally, the steering assembly 100 further includes a brake disc 50, which is connected and fixed to the wheel hub 222, and is used to cooperate with a brake caliper to reduce the driving speed of the vehicle. Optionally, the steering assembly 100 further includes a fender 60, which is disposed between the wheel hub 222 and the brake disc 50 and is connected and fixed to the steering knuckle 10, and is used to prevent external moisture and dust from intruding into the wheel hub bearing 20 in the axial direction of the wheel hub bearing 20.

[0062] Optionally, the rotating shaft includes a shaft body 32 and a fixed shaft 33 which are sequentially connected in the axial direction of the transmission shaft 30, the shaft body 32 is used for transmission connection with the inner ring 22, and the fixed shaft 33 extends from the wheel hub 222 side of the wheel hub bearing 20 to the wheel hub 222, and is connected and fixed with the wheel hub 222 in cooperation with a fastener (not shown). Optionally, the shaft body 32 and the fixed shaft 33 can be an integrated structure, or can be detachably connected by means of clamping, screwing and riveting, etc., without limitation. Optionally, a receiving groove 321 is provided at one end of the shaft body 32 away from the fixed shaft 33, and a universal joint 34 is provided in the receiving groove 321. The universal joint 34 is used to maintain the equal angular speed transmission of the output shaft of the vehicle's transmission (not shown) and the shaft body 32 when the steering knuckle 10 rotates driven by the aforementioned steering tie rod.

[0063] Optionally, the gear ring 31 is arranged around one end of the shaft body 32 near the universal joint 34. Optionally, the gear ring 31 and the shaft body 32 can be an integral structure, or can be detachably connected by means of snap connection, screw connection, riveting, etc., without limitation. Optionally, the transmission shaft 30 also includes a boss 35, which is connected to one end of the gear ring 31 near the universal joint 34 and protrudes from the outer peripheral surface of the gear ring 31, and the boss 35 is used to cooperate with the second mounting hole 13 to reduce the minimum gap between the transmission shaft 30 and the inner wall surface of the second mounting hole 13.

[0064] Optionally, the transmission shaft 30 can be made of a material that meets the requirements of structural strength, wear resistance and ease of processing and forming, specifically chrome-molybdenum alloy steel, carbon steel, aluminum alloy, cast iron and carbon fiber, etc., without limitation. Optionally, the wheel hub bearing 20 can be made of a material that meets the requirements of structural strength, wear resistance and ease of processing and forming, specifically chrome steel, stainless steel, cast iron, polytetrafluoroethylene and polyimide, etc., without limitation. Optionally, the brake disc 50 can be a powder metallurgy brake disc 50, a metal ceramic brake disc 50, a carbon fiber composite brake disc 50 and a cast iron brake disc 50, etc., without limitation. Optionally, the fender 60 can be made of a material that meets the requirements of structural strength, corrosion resistance and ease of processing and forming, specifically rubber, plastic and stainless steel, etc., without limitation.

[0065] The rotating assembly provided by the utility model adopts a transmission shaft 30, a wheel hub bearing 20 and a steering knuckle 10 in the embodiment of the utility model. The transmission shaft 30 includes a shaft body 32 and a ring gear 31. The ring gear 31 is arranged around the shaft body 32. The wheel hub bearing 20 includes an outer ring 21 and an inner ring 22. The outer ring 21 is sleeved on the inner ring 22 and is rotatably connected with the inner ring 22. The outer ring 21 is matched and connected with the first mounting hole 111, and the inner ring 22 is connected with the shaft body 32. The ring gear 31 is accommodated in the second mounting hole 13, so that the power transmission of the transmission shaft 30 to the wheel hub bearing 20 is realized, and the vehicle can be turned under the drive of the steering knuckle 10. At the same time, the ring gear 31 is not easily invaded by external moisture and dust, so that the ring gear 31 is prevented from rusting and dust accumulation, and the reading of the rotation speed of the ring gear 31 is avoided.

[0066] Please refer to Figure 5 , the minimum spacing distance between the inner circumferential wall of the second mounting hole 13 and the gear ring 31 is A, which satisfies: 1mm≤A≤3mm. Specifically, A is the spacing distance between the inner circumferential wall of the second mounting hole 13 and the top of the gear of the gear ring 31 in the radial direction of the second mounting hole 13. Optionally, the inner circumferential wall of the second mounting hole 13 is arranged parallel to the outer circumferential surface of the gear ring 31. Optionally, A can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, etc., without limitation.

[0067] Optionally, when A is less than 1 mm, the distance between the inner circumferential wall of the second mounting hole 13 and the gear ring 31 is too small, and the transmission shaft 30 has poor passability through the second mounting hole 13. During the assembly process, the transmission shaft 30 and the steering knuckle 10 are prone to scratching and damaging the steering knuckle 10 or the transmission shaft 30. Optionally, when A is greater than 3 mm, the distance between the inner circumferential wall of the second mounting hole 13 and the gear ring 31 is too large, and the isolation effect on external moisture and dust is not obvious, and there is a risk of water and dust accumulation being difficult to discharge. Preferably, in the embodiment of the utility model, A = 2 mm.

[0068] By setting the minimum spacing distance between the inner circumferential wall of the second mounting hole 13 and the ring gear 31 to A, the following is satisfied: 1mm≤A≤3mm, so that external moisture and dust are not easy to penetrate into the second mounting hole 13 to corrode and damage the ring gear 31, thereby preventing the ring gear 31 from rusting and accumulating dust, and avoiding failure in reading the rotation speed of the ring gear 31. At the same time, the second mounting hole 13 has enough space for the transmission shaft 30 to pass through, so that scratches and wear are not easy to occur when assembling the transmission shaft 30.

[0069] Please refer to Figure 5 The transmission shaft 30 further includes a boss 35, which is connected to one end of the gear ring 31 away from the first mounting hole 111, and the minimum spacing distance between the inner peripheral wall surface of the second mounting hole 13 and the boss 35 is B, which satisfies: 1.5 mm ≤ B. Specifically, B is the spacing distance between the inner peripheral wall surface of the second mounting hole 13 and the outer peripheral surface of the boss 35 in the radial direction of the second mounting hole 13.

[0070] Optionally, when B is less than 1.5 mm, the spacing between the inner circumferential wall of the second mounting hole 13 and the boss 35 is too small, and the transmission shaft 30 has poor passability through the second mounting hole 13. During the assembly process, the transmission shaft 30 and the steering knuckle 10 are prone to scratching and damaging the steering knuckle 10 or the transmission shaft 30. By setting the transmission shaft 30 to also include a boss 35, the boss 35 is connected to the end of the ring gear 31 away from the first mounting hole 111, and the minimum spacing distance between the inner circumferential wall of the second mounting hole 13 and the boss 35 is B, satisfying: 1.5 mm ≤ B, so that the spacing distance between the entrance of the second mounting hole 13 and the transmission shaft 30 is further reduced, the isolation effect of external moisture and dust is improved, the ring gear 31 is prevented from rusting and dust accumulation, and the reading of the rotation speed of the ring gear 31 is avoided. At the same time, the second mounting hole 13 has enough space for the transmission shaft 30 to pass through, and it is not easy to scratch and wear when assembling the transmission shaft 30.

[0071] Please refer to Figure 5 The steering knuckle 10 includes a main body 11 and a first protrusion 12, the main body 11 includes a first end face 117 in the axial direction of the first mounting hole 111, the first protrusion 12 is connected to the first end face 117, the main body 11 encloses the first mounting hole 111, the main body 11 and the first protrusion 12 together enclose a second mounting hole 13, and the maximum spacing distance between the end face of the first protrusion 12 facing away from the first end face 117 and the end face of the boss 35 facing away from the gear ring 31 in the axial direction of the second mounting hole 13 is C, satisfying: 2mm≤C.

[0072] Specifically, in the present embodiment, since the end surface of the boss 35 facing away from the gear ring 31 is a plane, and the end surface of the first protrusion 12 facing away from the first end surface 117 is a curved surface, C is specifically the axial spacing distance between the top of the curved surface and the end surface of the boss 35 facing away from the gear ring 31 in the second mounting hole 13.

[0073] Optionally, in the present embodiment, when C is less than 2 mm, since the end surface of the first protrusion 12 facing away from the first end surface 117 is a curved surface, the connection between the curved surface and the inner circumferential wall surface of the second mounting hole 13 has too little isolation effect on the gear ring 31, and external moisture and dust can easily enter the second mounting hole 13 and corrode the gear ring 31.

[0074] By setting the maximum spacing distance C between the end face of the first protrusion 12 facing away from the first end face 117 and the end face of the boss 35 facing away from the gear ring 31 in the axial direction of the second mounting hole 13, the following condition is satisfied: 2mm≤C, so that the length of the first protrusion 12 protruding from the boss 35 meets the preset requirement, further improving the isolation effect against external moisture and dust, preventing the gear ring 31 from rusting and dust accumulation, and avoiding failure in reading the rotation speed of the gear ring 31.

[0075] Please refer to Figure 5 The length of the first protrusion 12 protruding from the first end surface 117 is D, and the length of the gear ring 31 in the axial direction of the second mounting hole 13 is E, which satisfies: D≥E+C.

[0076] Optionally, D may be equal to E+C or greater than E+C, without limitation. Optionally, when D<E+C, in this embodiment, the length of the first protrusion 12 is insufficient, which may easily cause external moisture and dust to enter the second mounting hole 13 and corrode the gear ring 31.

[0077] By setting the length of the first protrusion 12 protruding from the first end face 117 to D, and the axial length of the ring gear 31 in the second mounting hole 13 to E, it is satisfied that: D≥E+C, so that the end face of the first protrusion 12 facing away from the first end face 117 is located on the axial outside of the ring gear 31, further improving the isolation effect of external moisture and dust, preventing the ring gear 31 from rusting and dust accumulation, and avoiding failure in reading the rotation speed of the ring gear 31.

[0078] Please refer to Figure 5 The transmission shaft 30 also includes a shaft body 32, the gear ring 31 and the boss 35 are both arranged around the shaft body 32, the shaft body 32 is connected to the inner ring 22, and the minimum spacing distance between the end face of the first protrusion 12 facing away from the first end face 117 and the shaft body 32 is F, satisfying: F ≥ 1.5 mm.

[0079] Specifically, in this embodiment, since the outer peripheral wall surface of the outer wall of the receiving groove 321 is a tapered surface, F is the vertical distance between the junction of the end surface of the first protrusion 12 facing away from the first end surface 117 and the inner peripheral wall surface of the second mounting hole 13 and the outer peripheral wall surface of the outer wall of the receiving groove 321. Optionally, when F is less than 1.5 mm, the spacing distance between the first protrusion 12 and the shaft body 32 is too small, resulting in low passability of the second mounting hole 13, random scratches and wear when assembling the transmission shaft, and easy motion interference during the rotation of the transmission shaft 30.

[0080] By setting the minimum spacing distance F between the end face of the first protrusion 12 facing away from the first end face 117 and the shaft body 32 to satisfy: F ≥ 1.5 mm, the size of the first protrusion 12 is matched with the size of the transmission shaft 30. Under the premise that the first protrusion 12 has an isolation effect on the ring gear 31, the first protrusion 12 will not interfere with the movement of the transmission shaft 30.

[0081] Please refer to Figure 4 The steering knuckle 10 also includes a second protrusion 14, which is connected to one end of the main body 11 facing away from the first protrusion 12. The second protrusion 14 is a cylindrical component and encloses a receiving space 141. At least a portion of the outer ring 21 is received in the receiving space 141. The minimum spacing distance between the inner circumferential wall surface of the second protrusion 14 and the outer circumferential surface of the outer ring 21 is L, which satisfies: L ≥ 5 mm.

[0082] Specifically, in this embodiment, L is the spacing distance between the inner peripheral wall surface of the second protrusion 14 and the maximum outer peripheral surface of the connecting ear 212. Optionally, when L is less than 5 mm, the installation clearance of the receiving space 141 is too small, and scratches and wear are likely to occur when the hub bearing 20 is assembled.

[0083] By setting the minimum spacing distance between the inner circumferential wall surface of the second protrusion 14 and the outer circumferential surface of the outer ring 21 to L, the following is satisfied: L ≥ 5 mm, so that the second protrusion 14 can satisfy the isolation effect on the outer ring 21, and the accommodating space 141 still has sufficient installation clearance for assembling the wheel hub bearing 20 and the steering knuckle 10.

[0084] Please refer to Figure 4 , the minimum spacing distance between the end surface of the second protrusion 14 facing away from the main body 11 and the inner ring 22 is H, which satisfies: 3mm≤H≤5mm. Specifically, in this embodiment, since the outer ring 21 is relatively fixed to the steering knuckle 10, and the inner ring 22 rotates relative to the steering knuckle 10 and the outer ring 21, H is the minimum spacing distance between the end surface of the second protrusion 14 facing away from the main body 11 and the aforementioned wheel hub 222.

[0085] Optionally, H can be 3mm, 3.5mm, 4mm, 4.5mm and 5mm, etc., without limitation. Optionally, when H is less than 3mm, the distance between the second protrusion 14 and the wheel hub 222 is too small, and the wheel hub 222 may interfere with the movement during rotation due to factors such as vehicle bumps, and noise may be easily generated if the distance is too small. Optionally, when H is greater than 5mm, the gap between the wheel hub 222 and the second protrusion 14 is too large, and external moisture and dust may easily enter the receiving space 141 through the gap between the wheel hub 222 and the second protrusion 14, and the inner ring 22 may be easily corroded and damaged by moisture and dust.

[0086] By setting the minimum spacing distance H between the end face of the second protrusion 14 facing away from the main body 11 and the inner ring 22 to meet the following conditions: 3mm≤H≤5mm, the wheel hub 222 is not likely to interfere with the movement of the second protrusion 14 and generate noise during rotation, while ensuring that external moisture and dust are not easily intruded into the accommodating space 141 and the gap between the outer ring 21 and the inner ring 22.

[0087] Please refer to Figure 1 and Figure 2 The present invention also provides a vehicle, including the steering assembly 100 in the embodiment of the present invention. Optionally, the vehicle may be a fuel vehicle, an electric vehicle, or a hybrid vehicle, without limitation. The steering assembly 100 in the embodiment of the present invention is applied to the chassis transmission system of the vehicle, and the power is sequentially transmitted to the wheels through the transmission shaft 30 and the hub bearing 20 to drive the vehicle, and the vehicle can be steered under the drive of the rotating knuckle. The vehicle adopts the steering assembly 100 in the embodiment of the present invention to prevent the steering knuckle 10 from being invaded by external moisture and dust on one side of the transmission shaft 30, to prevent the gear ring 31 of the transmission shaft 30 from rusting or dust accumulation, and to avoid failure in reading the rotation speed of the gear ring 31.

[0088] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0089] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A steering knuckle, characterized in that: The steering knuckle is surrounded by a first mounting hole and a second mounting hole, the first mounting hole and the second mounting hole are connected and coaxially arranged, the first mounting hole is suitable for being matched with the outer ring of the wheel hub bearing, the inner ring of the wheel hub bearing is suitable for being connected to the transmission shaft, and the second mounting hole is suitable for accommodating the gear ring of the transmission shaft.

2. The steering knuckle according to claim 1, characterized in that: The steering knuckle includes a main body and a first protrusion, the main body includes a first end face in the axial direction of the first mounting hole, the first protrusion is connected to the first end face, the first protrusion is a cylindrical component, the main body encloses the first mounting hole, and the main body and the first protrusion together enclose the second mounting hole.

3. The steering knuckle according to claim 2, characterized in that: The steering knuckle further includes a second protrusion connected to an end of the main body facing away from the first protrusion. The second protrusion is a cylindrical component and encloses a receiving space, and the receiving space is suitable for receiving at least a portion of the outer ring.

4. The steering knuckle according to claim 3, characterized in that: The thickness of the second protrusion in the radial direction of the first mounting hole is G, which satisfies: 3mm≤G≤4mm.

5. A steering assembly, characterized in that: It comprises a transmission shaft, a wheel hub bearing and a steering knuckle as claimed in any one of claims 1 to 4, wherein the transmission shaft comprises a shaft body and a gear ring, wherein the gear ring is arranged on the shaft body, and the wheel hub bearing comprises an outer ring and an inner ring, wherein the outer ring is sleeved on the inner ring and is rotatably connected to the inner ring, wherein the outer ring is cooperatively connected to the first mounting hole, wherein the inner ring is connected to the shaft body, and the gear ring is received in the second mounting hole.

6. The steering assembly according to claim 5, characterized in that: The minimum spacing distance between the inner circumferential wall surface of the second mounting hole and the gear ring is A, which satisfies: 1mm≤A≤3mm.

7. The steering assembly according to claim 5, characterized in that: The transmission shaft further comprises a boss, wherein the boss is connected to an end of the gear ring away from the first mounting hole; The minimum spacing distance between the inner peripheral wall surface of the second mounting hole and the boss is B, which satisfies: 1.5 mm ≤ B.

8. The steering assembly according to claim 7, characterized in that: The steering knuckle comprises a main body and a first protrusion, the main body comprises a first end surface in the axial direction of the first mounting hole, the first protrusion is connected to the first end surface, the main body encloses the first mounting hole, and the main body and the first protrusion together enclose the second mounting hole; The maximum spacing distance between the end surface of the first protrusion facing away from the first end surface and the end surface of the boss facing away from the gear ring in the axial direction of the second mounting hole is C, which satisfies: 2 mm≤C.

9. The steering assembly according to claim 8, characterized in that The length of the first protrusion protruding from the first end surface is D, and the length of the gear ring in the axial direction of the second mounting hole is E, satisfying: D≥E+C.

10. The steering assembly according to claim 8, characterized in that The transmission shaft further comprises a shaft body, the gear ring and the boss are both arranged around the shaft body, and the shaft body is connected to the inner ring; The minimum spacing distance between the end surface of the first protrusion facing away from the first end surface and the shaft body is F, which satisfies: F≥1.5 mm.

11. The steering assembly according to claim 8, characterized in that The steering knuckle further includes a second protrusion, the second protrusion is connected to an end of the main body facing away from the first protrusion, the second protrusion is a cylindrical member and encloses a receiving space, and at least a portion of the outer ring is received in the receiving space; The minimum spacing distance between the inner peripheral wall surface of the second protrusion and the outer peripheral surface of the outer ring is L, which satisfies: L≥5mm.

12. The steering assembly according to claim 11, characterized in that The minimum spacing distance between the end surface of the second protrusion facing away from the main body and the inner ring is H, which satisfies: 3mm≤H≤5mm.

13. A vehicle, characterized in that: Comprising a steering assembly as described in any one of claims 5-12.

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