Rear axle assembly and vehicle

Abstract

The utility model discloses a rear axle assembly and a vehicle, and the rear axle assembly comprises a steering knuckle which is provided with a first via hole; the adapter piece is arranged on the steering knuckle, a second via hole is formed in the adapter piece, and the second via hole communicates with the first via hole; the end part of the driving shaft is arranged in the first via hole; and the hub bearing is arranged in the second via hole. Therefore, installation and maintenance of the driving shaft and the hub bearing can be facilitated, joint installation of the hub bearing and the end of the driving shaft on the adapter can be achieved, and disassembly and replacement of the hub bearing and the driving shaft can be facilitated.

Description

Technical Field

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

[0002] In the prior art, the use of a bent tube beam rear axle solves the rear axle motor layout problem, but the rear axle power cannot be transmitted by the rear axle half shaft, and an independent drive shaft needs to be installed for power transmission. The welding of the steering knuckles and bent tube beams at both ends of the bent tube beam rear axle structure makes it difficult to assemble and repair the rear drive shaft. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a rear axle assembly, which can facilitate the installation and maintenance of the drive shaft and the wheel hub bearing, and can also realize the joint installation of the wheel hub bearing and the end of the drive shaft on the adapter, so as to facilitate the disassembly and replacement of the wheel hub bearing and the drive shaft.

[0004] The utility model further provides a vehicle.

[0005] According to the rear axle assembly of the first embodiment of the utility model, the rear axle assembly includes: a steering knuckle, the steering knuckle is provided with a first through hole; an adapter, the adapter is arranged on the steering knuckle, the adapter is provided with a second through hole, and the second through hole is connected to the first through hole; a drive shaft, the end of the drive shaft is arranged in the first through hole; and a wheel hub bearing, the wheel hub bearing is arranged in the second through hole.

[0006] Therefore, the rear axle assembly can facilitate the installation and maintenance of the drive shaft and the wheel hub bearing, and can also realize the joint installation of the wheel hub bearing and the end of the drive shaft on the adapter, thereby facilitating the disassembly and replacement of the wheel hub bearing and the drive shaft.

[0007] According to some embodiments of the present invention, the second through hole is provided with a drainage hole or a drainage groove below the wheel hub bearing.

[0008] According to some embodiments of the utility model, an opening is provided on a side of the drainage hole or the drainage trough away from the steering knuckle.

[0009] According to some embodiments of the present invention, a positioning portion is provided on a side of the adapter facing the steering knuckle, and the positioning portion extends into the first through hole.

[0010] According to some embodiments of the present invention, the positioning portion is configured to be annular and is disposed around the second via hole.

[0011] According to some embodiments of the utility model, the end of the driving shaft extends into the second through hole and is provided with a first dustproof portion, the inner circumferential wall of the second through hole is provided with a second dustproof portion, and the first dustproof portion and the second dustproof portion are arranged opposite to each other in the axial direction of the second through hole.

[0012] According to some embodiments of the present utility model, the steering knuckle is provided with a plurality of first mounting holes arranged around the first through hole, the adapter is provided with a plurality of second mounting holes arranged around the second through hole, and the plurality of first mounting holes and the plurality of second mounting holes correspond to each other one by one and are respectively connected by fasteners;

[0013] The hub bearing outer periphery is provided with a plurality of third mounting holes, the plurality of third mounting holes are spaced apart along the hub bearing outer periphery, the adapter is provided with a plurality of fourth mounting holes arranged around the second through hole, the plurality of third mounting holes and the plurality of fourth mounting holes correspond one to one and are respectively connected by fasteners.

[0014] According to some embodiments of the utility model, the fastener includes a bolt and a nut, the periphery of the head of the bolt is provided with a knurled structure and is interference fit in the second mounting hole, the rod of the bolt sequentially passes through the second mounting hole and the first mounting hole and cooperates with the nut; and / or a plurality of the first mounting holes are evenly distributed on the periphery of the first through hole.

[0015] According to some embodiments of the present invention, the minimum gap between the end of the driving shaft and the inner peripheral wall of the first through hole is d, and d satisfies the relationship: d≥2mm.

[0016] A vehicle according to an embodiment of the second aspect of the utility model includes: the above-mentioned rear axle assembly.

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

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural schematic diagram of a rear axle assembly according to an embodiment of the utility model;

[0020] Figure 2 is an exploded view of a rear axle assembly according to an embodiment of the utility model;

[0021] Figure 3 is a schematic structural diagram of an adapter according to an embodiment of the utility model;

[0022] Figure 4 is a schematic structural diagram of the inner side of the adapter according to an embodiment of the utility model;

[0023] Figure 5 is a cross-sectional view of a rear axle assembly according to an embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the connection between the adapter and the steering knuckle according to an embodiment of the utility model;

[0025] Figure 7 It is a schematic structural diagram showing a gap between the end of the driving shaft and the inner peripheral wall of the first through hole according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 100. Rear axle assembly;

[0028] 10. Steering knuckle; 11. First through hole; 12. First mounting hole;

[0029] 20. adapter; 21. second via hole; 211. drainage hole; 212. opening; 213. second dustproof part; 22. positioning part; 23. second mounting hole; 24. fourth mounting hole;

[0030] 30. driving shaft; 31. first dustproof part;

[0031] 40. wheel hub bearing; 41. third mounting hole;

[0032] 50. Fastener; 51. Bolt; 511. Knurled structure;

[0033] 52. Nut. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0035] Reference below Figure 1-Figure 7 A rear axle assembly 100 according to an embodiment of the present invention is described.

[0036] like Figure 1 and Figure 2 As shown, the rear axle assembly 100 according to the first embodiment of the utility model includes: a steering knuckle 10, an adapter 20, a drive shaft 30 and a wheel hub bearing 40, the steering knuckle 10 is provided with a first through hole 11, the adapter 20 is arranged on the steering knuckle 10, the adapter 20 is provided with a second through hole 21, the second through hole 21 is connected to the first through hole 11, the end of the drive shaft 30 is arranged in the first through hole 11, and the wheel hub bearing 40 is arranged in the second through hole 21.

[0037] Specifically, the welding of the steering knuckles and the bent tube beams at both ends of the traditional bent tube beam type rear axle structure makes it difficult to assemble and repair the rear drive shaft. Therefore, it is necessary to optimize the design. The rear axle assembly 100 is mainly composed of a steering knuckle 10, an adapter 20, a drive shaft 30 and a hub bearing 40. The steering knuckle 10 is provided with a first through hole 11, which can facilitate the insertion of the end of the drive shaft 30. The hub bearing 40 is arranged in the second through hole 21 of the adapter 20, so that it is convenient to insert and install the hub bearing 40. Moreover, the adapter 20 is arranged on the steering knuckle 10, which can not only facilitate the installation of the drive shaft 30, but also facilitate the installation of the hub bearing 40. The second through hole 21 on the adapter 20 can make the end of the drive shaft 30 and a part of the hub bearing 40 relatively connected together in the second through hole 21.

[0038] Therefore, the rear axle assembly 100 can facilitate the installation and maintenance of the drive shaft 30 and the wheel hub bearing 40, and can also realize the joint installation of the wheel hub bearing 40 and the end of the drive shaft 30 on the adapter 20, thereby facilitating the disassembly and replacement of the wheel hub bearing 40 and the drive shaft 30.

[0039] According to some embodiments of the present invention, Figure 3 As shown, the second through hole 21 is provided with a drainage hole 211 or a drainage groove below the wheel hub bearing 40 .

[0040] The second through hole 21 of the adapter 20 is provided with a drainage hole 211 below the hub bearing 40, and the drainage hole 211 is extended outward to drain water outward. The drainage hole 211 and the axis of the second through hole 21 have an angle, and the angle is set to 45° or 30°, which can speed up the outflow speed of the muddy water in the drainage hole 211, thereby effectively avoiding the accumulation of muddy water at the adapter 20.

[0041] When the second through hole 21 is provided with a drainage groove below the wheel hub bearing 40 , the bottom of the drainage groove and the axis of the second through hole 21 have an angle of 45° or 30°, thereby effectively avoiding the accumulation of muddy water in the wheel hub bearing 40 .

[0042] According to the specific embodiment of the utility model, Figure 3 As shown, the drainage hole 211 or the drainage groove is provided with an opening 212 on the side away from the steering knuckle 10 .

[0043] The provision of the opening 212 can facilitate the muddy water to flow out of the adapter 20, thereby preventing the muddy water from gathering.

[0044] According to some embodiments of the present invention, Figure 4 and Figure 5 As shown, a positioning portion 22 is provided on a side of the adapter 20 facing the steering knuckle 10 , and the positioning portion 22 extends into the first through hole 11 .

[0045] The positioning portion 22 is protruded toward the steering knuckle 10 to extend into the first through hole 11 of the steering knuckle 10 , so that the adapter 20 and the steering knuckle 10 can be positioned and installed, thereby avoiding misalignment of the adapter 20 and the steering knuckle 10 .

[0046] According to the specific embodiment of the utility model, Figure 4 and Figure 5 As shown, the positioning portion 22 is configured in a ring shape, and the positioning portion 22 is disposed around the second via hole 21 .

[0047] Specifically, the positioning portion 22 is a ring-shaped structure, and the positioning portion 22 is disposed around the second through hole 21 of the adapter 20 , which can not only play a role in positioning and installation, but also increase the strength of the second through hole 21 .

[0048] According to some embodiments of the present invention, Figure 5 As shown, the end of the driving shaft 30 extends into the second through hole 21, and the driving shaft 30 is provided with a first dustproof portion 31, and the inner peripheral wall of the second through hole 21 is provided with a second dustproof portion 213, and the first dustproof portion 31 and the second dustproof portion 213 are arranged opposite to each other in the axial direction of the second through hole 21.

[0049] The second dustproof part 213 is constructed as an L-shaped structure or a labyrinth structure composed of multiple L-shaped structures. After the drive shaft 30 passes through the second through hole 21, in order to avoid interference between the drive shaft 30 and the second dustproof part 213, the portion of the drive shaft 30 corresponding to the second dustproof part 213 is provided with a first dustproof part 31, and there is a gap between the first dustproof part 31 and the second dustproof part 213, so that the drive shaft 30 can be prevented from interfering with the adapter 20 during rotation, and dirt and sand can also be prevented from entering.

[0050] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, the steering knuckle 10 is provided with a plurality of first mounting holes 12 arranged around the first through hole 11, the adapter 20 is provided with a plurality of second mounting holes 23 arranged around the second through hole 21, the plurality of first mounting holes 12 and the plurality of second mounting holes 23 correspond one to one, and the plurality of first mounting holes 12 and the plurality of second mounting holes 23 are respectively connected by fasteners 50, the outer periphery of the wheel hub bearing 40 is provided with a plurality of third mounting holes 41, and the plurality of third mounting holes 41 are arranged at intervals along the outer periphery of the wheel hub bearing 40, the adapter 20 is provided with a plurality of fourth mounting holes 24 arranged around the second through hole 21, the plurality of third mounting holes 41 and the plurality of fourth mounting holes 24 correspond one to one and are respectively connected by fasteners.

[0051] Among them, the steering knuckle 10 is provided with a plurality of first mounting holes 12, and correspondingly, the adapter 20 is provided with a plurality of second mounting holes 23. For example, the steering knuckle 10 is provided with 5 first mounting holes 12, and correspondingly, the adapter 20 is provided with 5 second mounting holes 23. The 5 first mounting holes 12 and the 5 second mounting holes 23 are arranged in a one-to-one correspondence with each other, so that the steering knuckle 10 and the adapter 20 can be fixedly connected by the fastener 50.

[0052] Furthermore, the provision of the first mounting hole 12 of the adapter 20 can prevent the fastener 50 on the adapter 20 from interfering with the drive shaft 30 .

[0053] In addition, the fourth mounting hole 24 is a blind hole, and four fourth mounting holes 24 can be set. Four bolts pass through the third mounting hole 41 and the fourth mounting hole 24 from the outside to the inside in sequence, so that the wheel hub bearing 40 can be connected to the adapter 20 more stably and firmly.

[0054] According to some embodiments of the present invention, Figure 4-Figure 6 As shown, the fastener 50 includes a bolt 51 and a nut 52, the periphery of the head of the bolt 51 is provided with a knurled structure 511, and the bolt 51 is interference fit in the second mounting hole 23, the rod of the bolt 51 sequentially passes through the second mounting hole 23 and the first mounting hole 12, and the bolt 51 cooperates with the nut 52, and / or multiple first mounting holes 12 are evenly distributed on the periphery of the first through hole 11.

[0055] The fastener 50 is mainly composed of a bolt 51 and a nut 52. The knurled structure 511 on the head of the bolt 51 is interference-fitted with the second mounting hole 23, which can make the bolt 51 set on the adapter 20 more stable and firm, thereby preventing the bolt 51 from falling off. Moreover, the bolt 51 passes through the second mounting hole 23 of the adapter 20 and the first mounting hole 12 of the steering knuckle 10 from the outside to the inside, and then the nut 52 is thread-locked with the tail of the bolt 51, so that the connection and cooperation between the adapter 20 and the steering knuckle 10 can be more stable and firm.

[0056] Furthermore, the plurality of first mounting holes 12 are evenly spaced along the circumference of the steering knuckle 10, and correspondingly, the plurality of second mounting holes 23 are evenly spaced along the circumference of the adapter 20, so that the steering knuckle 10 and the adapter 20 are subjected to uniform force, thereby avoiding stress concentration.

[0057] According to some embodiments of the present invention, Figure 7 As shown, the minimum gap between the end of the driving shaft 30 and the inner peripheral wall of the first through hole 11 is d, and d satisfies the relationship: d≥2mm.

[0058] The aperture of the first through hole 11 is larger than the maximum diameter of the shaft head of the drive shaft 30, and the minimum gap between the end of the drive shaft 30 and the inner wall of the first through hole 11 is 2 mm, so that the drive shaft 30 can pass through the first through hole 11 quickly and effortlessly.

[0059] A vehicle according to an embodiment of the second aspect of the utility model comprises: the rear axle assembly 100 of the above embodiment.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown 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 should not be understood as a limitation on the present invention.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rear axle assembly, characterized in that: include: A steering knuckle, wherein the steering knuckle is provided with a first through hole; A transfer member, the transfer member is arranged on the steering knuckle, the transfer member is provided with a second through hole, and the second through hole is communicated with the first through hole; a driving shaft, an end of which is disposed in the first through hole; A wheel hub bearing is arranged in the second through hole.

2. The rear axle assembly according to claim 1, characterized in that: The second through hole is provided with a drainage hole or a drainage groove below the wheel hub bearing.

3. The rear axle assembly according to claim 2, characterized in that: The drainage hole or the drainage groove is provided with an opening on one side away from the steering knuckle.

4. The rear axle assembly according to claim 1, characterized in that: A positioning portion is provided on a side of the adapter facing the steering knuckle, and the positioning portion extends into the first through hole.

5. The rear axle assembly according to claim 4, characterized in that: The positioning portion is configured in a ring shape and is disposed around the second via hole.

6. The rear axle assembly according to claim 1, characterized in that: The end of the driving shaft extends into the second through hole and is provided with a first dustproof portion, the inner peripheral wall of the second through hole is provided with a second dustproof portion, and the first dustproof portion and the second dustproof portion are arranged opposite to each other in the axial direction of the second through hole.

7. The rear axle assembly according to claim 1, characterized in that: The steering knuckle is provided with a plurality of first mounting holes arranged around the first through hole, and the adapter is provided with a plurality of second mounting holes arranged around the second through hole, and the plurality of first mounting holes and the plurality of second mounting holes correspond to each other one by one and are respectively connected by fasteners; The hub bearing outer periphery is provided with a plurality of third mounting holes, the plurality of third mounting holes are spaced apart along the hub bearing outer periphery, the adapter is provided with a plurality of fourth mounting holes arranged around the second through hole, the plurality of third mounting holes and the plurality of fourth mounting holes correspond one to one and are respectively connected by fasteners.

8. The rear axle assembly according to claim 7, characterized in that: The fastener comprises a bolt and a nut, the outer periphery of the head of the bolt is provided with a knurled structure and is interference-fitted in the second mounting hole, and the rod of the bolt passes through the second mounting hole and the first mounting hole in sequence and cooperates with the nut; and / or The plurality of first mounting holes are evenly distributed on the outer periphery of the first via hole.

9. The rear axle assembly according to claim 1, characterized in that: The minimum gap between the end of the driving shaft and the inner peripheral wall of the first through hole is d, and d satisfies the relationship: d≥2mm.

10. A vehicle, characterized in that: include: The rear axle assembly according to any one of claims 1 to 9.

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