Rear axle assembly and vehicle

Abstract

The utility model discloses a rear axle assembly and a vehicle. The rear axle assembly comprises a bent pipe beam, a front axle assembly and a rear axle assembly, the steering knuckle is connected to the bent pipe beam and is provided with a via hole; and the driving shaft assembly comprises a driving shaft and a hub bearing, the hub bearing is integrated on the driving shaft and allows the driving shaft to rotate, the driving shaft penetrates through the via hole, and the hub bearing is connected with the steering knuckle. Therefore, the driving shaft assembly can be conveniently arranged in a penetrating mode, installation working hours can be saved, use of an adjusting machine can be reduced, and therefore the installation efficiency of the driving shaft can be improved. The hub bearing is integrated on the driving shaft to form the driving shaft assembly, so that the structure can be simplified, the number of parts can be reduced, the weight of the whole vehicle can be reduced, and the fuel economy of the whole vehicle can be improved.

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, although the bent tube beam rear axle can realize the basic functions of the traditional rear axle, it is necessary to adjust the position of the bent tube beam by hoisting during installation to realize the installation of the drive shaft. In the process of adjusting the position, it is also necessary to pay attention to the bent tube beam and other components. There is a certain degree of danger compared to installation on tooling, and it also increases the installation time and production cost. 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, in which the setting of the steering knuckle can facilitate the installation of the drive shaft assembly, which can not only save installation time, but also reduce the use of position adjustment machines, thereby improving the installation efficiency of the drive shaft. The steering knuckle can also provide installation space for surrounding parts. Since the wheel hub bearing is integrated into the drive shaft to form a drive shaft assembly, the structure can be simplified and the number of parts can be reduced, thereby reducing the weight of the whole vehicle and improving the fuel economy of the whole vehicle.

[0004] The utility model further provides a vehicle.

[0005] According to the rear axle assembly of the first aspect of the utility model, it includes: a bent tube beam; a steering knuckle, which is connected to the bent tube beam and has a through hole; a drive shaft assembly, which includes: a drive shaft and a wheel hub bearing, which is integrated with the drive shaft and allows the drive shaft to rotate, the drive shaft passes through the through hole and the wheel hub bearing is connected to the steering knuckle.

[0006] Therefore, the setting of the steering knuckle through hole in the rear axle assembly can facilitate the installation of the drive shaft assembly, which can not only save installation time, but also reduce the use of adjustment machines, thereby improving the installation efficiency of the drive shaft. The steering knuckle can also provide installation space for surrounding parts. Since the wheel hub bearing is integrated into the drive shaft to form a drive shaft assembly, the structure can be simplified and the number of parts can be reduced, thereby reducing the weight of the entire vehicle and improving the fuel economy of the entire vehicle.

[0007] According to some embodiments of the present invention, the outer diameter of the drive shaft is smaller than the inner diameter of the through hole.

[0008] According to some embodiments of the utility model, a portion of the wheel hub bearing extends into the through hole, and the through hole is provided with a drainage hole or a drainage groove below the wheel hub bearing, and the bottom of the drainage groove forms an angle with the axis of the through hole.

[0009] According to some embodiments of the utility model, a plurality of circumferentially spaced support feet are provided on the outer periphery of the wheel hub bearing, and the plurality of support feet are respectively connected to the steering knuckle via fasteners.

[0010] According to some embodiments of the utility model, the steering knuckle includes: a mounting body, the mounting body is provided with the through hole and is connected to the bent tube beam; and a shock absorber connecting arm, the shock absorber connecting arm is connected to the mounting body and is located below the through hole.

[0011] According to some embodiments of the present utility model, the installation body is further provided with a mounting hole, the mounting hole is located at the rear side of the through hole, and the end of the bent tube beam extends into the mounting hole.

[0012] According to some embodiments of the present invention, a protruding welding ring is provided on one side of the installation body, and the welding ring is arranged around the installation hole and is welded to the bent tube beam.

[0013] According to some embodiments of the present invention, the steering knuckle further includes: a dust cover, which is arranged on the outside of the mounting hole and opposite to the mounting hole to cover the end of the bent tube beam.

[0014] According to some embodiments of the present invention, the dust cover is provided with a protrusion protruding toward the end of the bent tube beam, and the protrusion extends into the end of the bent tube beam.

[0015] A vehicle according to an embodiment of the second aspect of the utility model includes: the above-mentioned rear axle assembly.

[0016] 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

[0017] 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:

[0018] Figure 1 is a structural schematic diagram of a rear axle assembly according to an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the connection between the bent tube beam and the steering knuckle according to an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of a steering knuckle with a dust cover according to an embodiment of the utility model;

[0021] Figure 4It is a schematic structural diagram of the connection between the wheel hub bearing and the steering knuckle according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the mating of the protrusion of the dust cover and the end of the bent tube beam according to an embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of a shock absorber connected to a shock absorber connecting arm according to an embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of a structure in which a drainage hole is provided below a via hole according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 100. Rear axle assembly;

[0027] 10. Bent tube beam;

[0028] 20. Steering knuckle; 21. Through hole; 22. Mounting body; 23. Shock absorber connecting arm; 24. Mounting hole;

[0029] 30. Drive shaft assembly; 31. Drive shaft; 32. Wheel hub bearing;

[0030] 40. Outer ring; 41. Support foot;

[0031] 50. Welding ring;

[0032] 60. Dust cover; 61. Protrusion.

[0033] 70. Drainage hole. 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 As shown, the rear axle assembly 100 according to the first embodiment of the utility model includes: a bent tube beam 10, a steering knuckle 20 and a drive shaft assembly 30, the steering knuckle 20 is connected to the bent tube beam 10, and the steering knuckle 20 is provided with a through hole 21, the drive shaft assembly 30 includes: a drive shaft 31 and a hub bearing 32, the hub bearing 32 is integrated in the drive shaft 31 and allows the drive shaft 31 to rotate, the drive shaft 31 passes through the through hole 21, and the hub bearing 32 is connected to the steering knuckle 20.

[0037] Specifically, due to the layout requirements of the rear axle motor, the traditional integral rear axle cannot be used. To facilitate the layout of the rear axle motor, the rear axle is set as a curved tube beam rear axle. Although the curved tube beam rear axle can realize the basic functions of the traditional rear axle, the drive shaft needs to be installed by hoisting and adjusting the position of the curved tube beam. During the position adjustment process, it is necessary to pay attention to the curved tube beam not to collide with other parts, which increases the installation time and production cost.

[0038] Therefore, the rear axle assembly 100 is optimized and designed. The rear axle assembly 100 is mainly composed of a bent tube beam 10, a steering knuckle 20 and a drive shaft assembly 30. The steering knuckle 20 is connected to the bent tube beam 10, so that the steering knuckle 20 and the bent tube beam 10 can be integrated. The steering knuckle 20 is provided with a through hole 21, which can facilitate the insertion of the drive shaft assembly 30. In this way, when installing the drive shaft assembly 30, there is no need to adjust the position of the bent tube beam 10, which can save installation time and reduce the use of adjustment machines, thereby improving the installation efficiency of the drive shaft 31.

[0039] At the same time, the steering knuckle 20 can also provide installation space for surrounding parts. Since the hub bearing 32 is integrated with the drive shaft 31 to form a drive shaft assembly 30, the structure can be simplified and the number of parts can be reduced. For example, the number of connecting parts between the hub bearing 32 and the drive shaft 31 can be reduced, thereby reducing the weight of the entire vehicle. In addition, the bent tube beam 10 and the steering knuckle 20 are integrated together, thereby further reducing the weight of the entire vehicle and improving the fuel economy of the entire vehicle.

[0040] In addition, the wheel hub bearing 32 is connected to the steering knuckle 20 , and the steering knuckle 20 can provide an installation position for the wheel hub bearing 32 , thereby facilitating the installation and fixation of the wheel hub bearing 32 .

[0041] Therefore, the setting of the through hole 21 of the steering knuckle 20 in the rear axle assembly 100 can facilitate the installation of the drive shaft assembly 30, which can not only save installation time, but also reduce the use of position adjustment machines, thereby improving the installation efficiency of the drive shaft 31. The steering knuckle 20 can also provide installation space for surrounding parts. Since the wheel hub bearing 32 is integrated into the drive shaft 31 to form the drive shaft assembly 30, the structure can be simplified and the number of parts can be reduced, thereby reducing the weight of the whole vehicle and improving the fuel economy of the whole vehicle.

[0042] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the outer diameter of the driving shaft 31 is smaller than the inner diameter of the through hole 21 .

[0043] The maximum outer diameter of the drive shaft 31 is smaller than the inner diameter of the through hole 21 , so that the drive shaft 31 can be directly inserted into the through hole 21 without adjusting the position of the steering knuckle 20 , thereby increasing the installation speed of the drive shaft 31 .

[0044] According to some embodiments of the present invention, Figure 7 As shown, a portion of the wheel hub bearing 32 extends into the through hole 21, and the through hole 21 is provided with a drainage hole 70 or a drainage trough below the wheel hub bearing 32. The bottom of the drainage trough has an angle with the axis of the through hole 21. In the present embodiment, the angle is set to 45° or 30°, which can effectively prevent mud and water from accumulating in the wheel hub bearing.

[0045] A drainage hole is provided below the inner wall of the through hole 21, that is, below the wheel hub bearing 32. The drainage hole 70 extends outward to drain water outward, thereby effectively preventing muddy water from accumulating in the wheel hub bearing.

[0046] According to some embodiments of the utility model, the wheel hub bearing 32 includes: an outer ring 40, an inner ring, a retaining frame and a rolling element. The outer ring 40 is connected to the steering knuckle 20, the inner ring is integrated with the drive shaft 31, and the inner ring rotates synchronously with the drive shaft 31. The retaining frame is arranged between the outer ring 40 and the inner ring, and the rolling element is arranged on the retaining frame.

[0047] Among them, the wheel hub bearing 32 is mainly composed of an outer ring 40, an inner ring, a retaining frame and rolling elements. The outer ring 40 is connected and matched with the steering knuckle 20, and the drive shaft 31 rotates synchronously with the inner ring. In this way, the motor at the rear axle transmits power to the wheel hub through the drive shaft 31.

[0048] Furthermore, the retaining frame is located between the outer ring 40 and the inner ring, and the retaining frame can provide a mounting position for the rolling element, thereby ensuring the stability and reliability of the rotation of the wheel hub.

[0049] According to some embodiments of the present invention, Figure 4 As shown, a plurality of circumferentially spaced support legs 41 are disposed on the outer periphery of the wheel hub bearing 32 , and the plurality of support legs 41 are respectively connected to the steering knuckle 20 via fasteners.

[0050] The outer periphery of the wheel hub bearing 32 is provided with a plurality of legs 41 , which can facilitate the connection between the wheel hub bearing 32 and the steering knuckle 20 and can also make the connection between the wheel hub bearing 32 and the steering knuckle 20 more stable and firm.

[0051] Furthermore, the plurality of legs 41 are evenly spaced along the outer circumference of the outer ring 40 , so that the force of the connection between the wheel hub bearing 32 and the steering knuckle 20 can be more even.

[0052] According to the specific embodiment of the utility model, Figure 2 and Figure 3As shown, the steering knuckle 20 includes: a mounting body 22 and a shock absorber connecting arm 23, the mounting body 22 is provided with a through hole 21, and the mounting body 22 is connected to the bent tube beam 10, the shock absorber connecting arm 23 is connected to the mounting body 22, and the shock absorber connecting arm 23 is located below the through hole 21.

[0053] Specifically, a through hole 21 is provided in the middle of the installation body 22, and the through hole 21 can facilitate the installation of the drive shaft assembly 30, wherein the installation can be completed without adjusting the position of the bent tube beam 10 by hoisting, thereby saving space for rear axle arrangement, and thus increasing the overall thickness of the steering knuckle 20 to improve the overall strength of the steering knuckle 20, while not affecting the installation and arrangement of other components. In addition, the installation body 22 can be welded to the bent tube beam 10, so that the steering knuckle 20 and the bent tube beam 10 can be integrated.

[0054] In addition, the setting of the shock absorber connecting arm 23 of the mounting body 22 is used to install the shock absorber connecting arm 23, so that the setting of the shock absorber bracket can be reduced. In this way, by optimizing the structure and rationally utilizing the space, the structure can be made more compact.

[0055] According to some embodiments of the present invention, Figure 2 As shown, the mounting body 22 is further provided with a mounting hole 24 , which is located at the rear side of the through hole 21 , and the end of the bent tube beam 10 extends into the mounting hole 24 .

[0056] The mounting hole 24 can facilitate the installation of the bent tube beam 10 , and the end of the bent tube beam 10 extends into the mounting hole 24 , so that the bent tube beam 10 and the mounting hole 24 can be better connected.

[0057] According to some embodiments of the present invention, Figure 2 As shown, a protruding welding ring 50 is provided on one side of the mounting body 22 . The welding ring 50 is arranged around the mounting hole 24 , and the welding ring 50 is welded to the bent tube beam 10 .

[0058] The welding ring 50 is protruded toward the end of the bent tube beam 10, which can increase the contact area between the welding ring 50 and the end of the bent tube beam 10, thereby reducing the force on the welding ring 50 and the end of the bent tube beam 10. The welding ring 50 has a mounting hole 24 inside, which can facilitate the insertion of the end of the bent tube beam 10. Moreover, the welding ring 50 is welded to the bent tube beam 10, so that the connection between the welding ring 50 and the bent tube beam 10 can be more stable and firm.

[0059] After the steering knuckle 20 is welded to the bent tube beam 10, the bent tube beam 10 with the welded steering knuckle 20 is then installed on the vehicle frame, and the rear axle motor is also installed on the vehicle frame, and then the drive shaft 31 of the integrated wheel hub bearing 32 is passed through the through hole 21 at the steering knuckle 20, and finally the wheel hub bearing 32 is fixedly connected to the steering knuckle 20 with bolts.

[0060] According to some embodiments of the present invention, Figure 3 and Figure 5 As shown, the steering knuckle 20 further includes a dust cover 60 , which is disposed outside the mounting hole 24 and is opposite to the mounting hole 24 , thereby covering the end of the bent tube beam 10 .

[0061] The dust cover 60 is integrated on the steering knuckle 20, so that the bent tube beam 10 does not need to make a separate dust cover 60 for welding, thereby reducing the welding process of the dust cover 60, saving installation time, and reducing the production cost of the vehicle. The dust cover 60 is integrated on the steering knuckle 20, which can reduce the welding bead and reduce the weight of the rear axle of the bent tube beam 10, thereby reducing the weight of the whole vehicle and improving the fuel economy of the whole vehicle.

[0062] According to some embodiments of the present invention, Figure 5 As shown, the dust cover 60 is provided with a protrusion 61 protruding toward the end of the bent tube beam 10 , and the protrusion 61 extends into the end of the bent tube beam 10 .

[0063] Among them, a cavity is formed inside the bent tube beam 10, and the protrusion 61 extends into the cavity at the end of the bent tube beam 10. The protrusion 61 and the end of the bent tube beam 10 are interference fit, so that the connection between the protrusion 61 and the end of the bent tube beam 10 can be made more stable and firm.

[0064] A vehicle according to an embodiment of the second aspect of the utility model comprises: the rear axle assembly 100 of the above embodiment.

[0065] 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.

[0066] 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.

[0067] 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: Bent tube beam; A steering knuckle, the steering knuckle is connected to the bent tube beam and has a through hole; A drive shaft assembly, the drive shaft assembly comprising: a drive shaft and a wheel hub bearing, the wheel hub bearing being integrated with the drive shaft and allowing the drive shaft to rotate, the drive shaft passing through the through hole and the wheel hub bearing being connected to the steering knuckle; The steering knuckle comprises: a mounting body, the mounting body is provided with the through hole and is connected to the bent tube beam; The installation body is also provided with an installation hole, the installation hole is located at the rear side of the through hole, and the end of the bent tube beam extends into the installation hole; The steering knuckle further includes a dust cover, which is arranged outside the mounting hole and opposite to the mounting hole to cover the end of the bent tube beam.

2. The rear axle assembly according to claim 1, characterized in that: The outer diameter of the driving shaft is smaller than the inner diameter of the through hole.

3. The rear axle assembly according to claim 1, characterized in that: A portion of the wheel hub bearing extends into the through hole, and the through hole is provided with a drainage hole or a drainage groove below the wheel hub bearing, and the groove bottom of the drainage groove forms an angle with the axis of the through hole.

4. The rear axle assembly according to claim 1, characterized in that: The outer periphery of the wheel hub bearing is provided with a plurality of circumferentially spaced support feet, and the plurality of support feet are respectively connected to the steering knuckle via fasteners.

5. The rear axle assembly according to claim 1, characterized in that: The steering knuckle also includes: A vibration damper connecting arm is connected to the mounting body and is located below the through hole.

6. The rear axle assembly according to claim 1, characterized in that: A protruding welding ring is arranged on one side of the installation body, and the welding ring is arranged around the installation hole and is welded to the bent tube beam.

7. The rear axle assembly according to claim 1, characterized in that: The dust cover is provided with a protrusion protruding toward the end of the bent tube beam, and the protrusion extends into the end of the bent tube beam.

8. A vehicle, characterized in that: include: The rear axle assembly according to any one of claims 1 to 7.

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