Hub assembly and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and discloses a hub assembly and a vehicle, the hub assembly comprises a shell and a bearing, the inner wall of the shell is provided with a step surface and an abutting surface, the step surface is perpendicular to the axis of the shell, the abutting surface is annular, and the center line of the abutting surface coincides with the axis of the shell; an arc surface is arranged between the step surface and the abutting surface; the bearing comprises an inner ring and an outer ring, the end face of the outer ring abuts against the step face, the peripheral face of the outer ring abuts against the abutting face, so that the bearing is installed in place and limited, a transition face is arranged between the end face and the peripheral face of the outer ring, the transition face and the arc face are arranged at intervals, and a certain gap is formed between the transition face and the arc face. Therefore, in the running process of the hub assembly, the transition surface is not in direct contact with the arc surface, the arc surface is prevented from being extruded by the transition surface of the bearing, and stress concentration of the arc surface is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to wheel hub assembly and vehicle. Background Technology

[0002] In commercial vehicles and other vehicles, to improve vehicle weight reduction, some wheel hubs are made of aluminum alloy. For example, existing technology provides a forged high-strength aluminum alloy wheel hub, in which the hub shell is made of aluminum alloy to reduce the hub's weight. Furthermore, to accommodate two bearings, the shell has two stepped surfaces, with each bearing fitting against one of these surfaces to ensure proper installation. However, due to the relatively low strength of aluminum alloy, during wheel hub operation, the outer wall of the bearing continuously presses against the hub shell, causing stress concentration at the interface between the stepped surfaces and the outer wall of the bearing mounting holes, ultimately damaging the hub shell. Utility Model Content

[0003] According to one aspect of the present invention, the present invention provides a wheel hub assembly to solve the problem in the prior art that, during the operation of the wheel hub, the outer wall of the bearing continuously squeezes the wheel hub housing, which leads to stress concentration at the junction of the stepped surface and the outer wall of the bearing mounting hole, thereby causing damage to the wheel hub housing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Wheel assembly, including:

[0006] The shell has an inner wall with a stepped surface and an abutting surface. The stepped surface is perpendicular to the axis of the shell, and the abutting surface is annular with its center line coinciding with the axis of the shell. There is an arc surface between the stepped surface and the abutting surface.

[0007] The bearing includes an inner ring and an outer ring. The end face of the outer ring abuts against the stepped surface, and the outer peripheral surface of the outer ring abuts against the abutting surface. A transition surface is provided between the end face and the outer peripheral surface of the outer ring, and the transition surface is spaced apart from the arc surface.

[0008] As a preferred embodiment of the wheel hub assembly, one end of the arc surface is connected to the stepped surface, and the other end is located outside the abutment surface.

[0009] As a preferred embodiment of the wheel hub assembly, the end of the arc surface away from the stepped surface is connected to a connecting surface, the connecting surface being flared and connected to the abutting surface.

[0010] As a preferred embodiment of the wheel hub assembly, the length of the connecting surface along the axial direction of the housing is L, and the radius of the arc surface is R, where 1.5 ≤ L / R ≤ 3.

[0011] As a preferred embodiment of the wheel hub assembly, the connecting surface is frustum-shaped, and the frustum inclination angle is α, 3°≤α≤7°.

[0012] As a preferred embodiment of the wheel hub assembly, the housing is integrally machined from aluminum alloy.

[0013] As a preferred embodiment of the wheel hub assembly, two of each of the stepped surface, the abutting surface, and the bearing are provided. The end faces of the outer rings of the two bearings abut against the two stepped surfaces in a corresponding manner, and the two bearings are located at the two ends of the two stepped surfaces respectively. The outer peripheral surfaces of the outer rings of the two bearings abut against the two abutting surfaces in a corresponding manner.

[0014] As a preferred embodiment of the wheel hub assembly, it also includes a spacer sleeve disposed within the housing, with both ends of the spacer sleeve abutting against the inner rings of the two bearings, respectively.

[0015] As a preferred embodiment of the wheel hub assembly, the housing, the spacer, and the two bearings form a lubrication cavity. The housing is provided with an oil inlet for injecting lubricating oil into the lubrication cavity. The lubricating oil in the lubrication cavity can flow to the bearings. The wheel hub assembly also includes an oil inlet plug for opening or closing the oil inlet.

[0016] As a preferred embodiment of the wheel hub assembly, the housing has wheel bolt mounting holes, and the wheel hub assembly further includes a plurality of wheel bolts. Each wheel bolt includes a first mounting section, a second mounting section, and a threaded section connected in sequence. The first mounting section and the second mounting section are both located inside the wheel bolt mounting holes, and the first mounting section is in contact with the inner wall of the wheel bolt mounting holes.

[0017] Along the direction away from the first mounting section, the diameter of the second mounting section gradually decreases, and the threaded section is used to connect the wheel.

[0018] As a preferred embodiment of the wheel hub assembly, the second mounting section is frustum-shaped with an inclination angle of β, where 0° < β ≤ 3°.

[0019] As a preferred embodiment of the wheel hub assembly, the wheel bolt further includes a bolt head and a splined segment connected to the bolt head. The bolt head is located outside the wheel bolt mounting hole and abuts against the housing. The splined segment is connected to the first mounting section. The housing also has a splined hole that is coaxial with and communicates with the wheel bolt mounting hole. The splined hole and the splined segment are splinedly engaged.

[0020] As a preferred embodiment of the wheel hub assembly, it also includes a plurality of half-shaft bolts, all of which are double-ended studs, with one end of each half-shaft bolt threaded to the housing and the other end threaded to the half-shaft.

[0021] According to another aspect of the present invention, a vehicle is provided, including the aforementioned wheel assembly, the wheel assembly being connected to a differential via a half-shaft, and the wheel assembly being used to mount wheels.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a wheel hub assembly, including a housing and a bearing. The inner wall of the housing has a stepped surface and an abutment surface. The stepped surface is perpendicular to the axis of the housing, and the abutment surface is annular, with its center line coinciding with the axis of the housing. There is an arc surface between the stepped surface and the abutment surface. The bearing includes an inner ring and an outer ring. The end face of the outer ring abuts against the stepped surface, and the outer circumferential surface of the outer ring abuts against the abutment surface, thereby installing the bearing in place and limiting its position. There is a transition surface between the end face of the outer ring and the outer circumferential surface. The transition surface and the arc surface are spaced apart, i.e., there is a certain gap between the transition surface and the arc surface. Therefore, during the operation of the wheel hub assembly, the transition surface will not directly contact the arc surface, preventing the transition surface of the bearing from squeezing the arc surface and thus avoiding stress concentration on the arc surface.

[0024] This utility model also provides a vehicle, including the aforementioned wheel hub assembly. The wheel hub assembly is connected to the differential via a half-shaft and is used to mount the wheel. The wheel hub assembly abuts against the stepped surface through the end face of the outer ring and the outer peripheral surface of the outer ring abuts against the abutting surface, so that the bearing is installed in place and the bearing is limited. The transition surface and the arc surface are spaced apart, that is, there is a certain gap between the transition surface and the arc surface, so that during the operation of the wheel hub assembly, the transition surface will not directly contact the arc surface, preventing the transition surface of the bearing from squeezing the arc surface, thereby avoiding stress concentration on the arc surface. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the wheel hub assembly in an embodiment of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the housing and bearing in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the housing and wheel bolts in an embodiment of this utility model.

[0028] In the picture:

[0029] 1. Housing; 101. Stepped surface; 102. Abutment surface; 103. Arc surface; 104. Connecting surface; 105. Wheel bolt mounting hole; 106. Lubrication cavity;

[0030] 2. Bearing; 21. Inner ring; 22. Outer ring;

[0031] 3. Spacer sleeve;

[0032] 4. Wheel bolts; 41. First mounting section; 42. Second mounting section; 43. Threaded section; 44. Bolt head; 45. Splined section;

[0033] 5. Half-shaft bolts;

[0034] 61. Oil filling plug; 62. Oil seal. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] In commercial vehicles and other vehicles, to improve vehicle weight reduction, some wheel hubs are made of aluminum alloy. For example, existing technology provides a forged high-strength aluminum alloy wheel hub, in which the hub shell is made of aluminum alloy to reduce the hub's weight. Furthermore, to accommodate two bearings, the shell has two stepped surfaces, with each bearing fitting against one of these surfaces to ensure proper installation. However, due to the relatively low strength of aluminum alloy, during wheel hub operation, the outer wall of the bearing continuously presses against the hub shell, causing stress concentration at the interface between the stepped surfaces and the outer wall of the bearing mounting holes, ultimately damaging the hub shell.

[0040] In response, this embodiment provides a wheel hub assembly to solve the problem in the prior art where, during the operation of the wheel hub, the outer wall of the bearing continuously squeezes the wheel hub housing, causing stress concentration at the junction of the stepped surface and the outer wall of the bearing mounting hole, which in turn causes damage to the wheel hub housing. This assembly can be used in the field of vehicle technology.

[0041] Reference Figures 1-3 The hub assembly includes a housing 1 and a bearing 2. The inner wall of the housing 1 has a stepped surface 101 and an abutment surface 102. The stepped surface 101 is perpendicular to the axis of the housing 1, and the abutment surface 102 is annular, with the center line of the abutment surface 102 coinciding with the axis of the housing 1. There is an arc surface 103 between the stepped surface 101 and the abutment surface 102. The bearing 2 includes an inner ring 21 and an outer ring 22. The outer ring 22 can rotate relative to the inner ring 21 and can be fixedly connected to the housing 1. The inner ring 21 is used to fixally connect to the half-shaft sleeve, so that the housing 1 can rotate stably relative to the half-shaft sleeve. The end face of the outer ring 22 abuts against the stepped surface 101, and the outer peripheral surface of the outer ring 22 abuts against the abutting surface 102, thereby installing the bearing 2 in place and limiting the bearing 2. There is a transition surface between the end face of the outer ring 22 and the outer peripheral surface. The transition surface and the arc surface 103 are spaced apart, that is, there is a certain gap between the transition surface and the arc surface 103. So that during the operation of the hub assembly, the transition surface will not directly contact the arc surface 103, preventing the transition surface of the bearing 2 from squeezing the arc surface 103, thereby avoiding stress concentration on the arc surface 103.

[0042] During vehicle operation, the housing 1 of the wheel hub assembly may undergo significant deformation. However, due to the certain gap between the transition surface and the arc surface 103, even if the housing 1 undergoes certain deformation, it will not cause compression to the arc surface 103. This allows the housing 1 to use lightweight materials to reduce the weight of the wheel hub assembly. Specifically, in this embodiment, the housing 1 is integrally formed from aluminum alloy material.

[0043] Continue to refer to Figures 1-3One end of the arc surface 103 is connected to the step surface 101, and the other end is located on the outside of the abutment surface 102, so that one end of the arc surface 103 is located on the inside of the abutment surface 102 and connected to the step surface 101. The other end of the arc surface 103 extends to the outside of the abutment surface 102, thereby creating a larger space between the arc surface 103 and the transition surface, further preventing the transition surface of the bearing 2 from squeezing the arc surface 103 during the operation of the hub assembly, and allowing the housing 1 to undergo greater deformation.

[0044] Continue to refer to Figures 1-3 The end of the arc surface 103 away from the step surface 101 is connected to a connecting surface 104. The connecting surface 104 is trumpet-shaped and connects to the abutment surface 102. Specifically, the wide end of the connecting surface 104 connects to the end of the arc surface 103 away from the step surface 101, and the narrow end connects to the abutment surface 102, thereby making a smooth transition between the arc surface 103 and the abutment surface 102. Furthermore, a rounded chamfer is provided between the connecting surface 104 and the abutment surface 102 to avoid stress concentration at the connection point of the connecting surface 104 and the abutment surface 102.

[0045] Continue to refer to Figures 1-3 Along the axial direction of the shell 1, the length of the connecting surface 104 is L, and the radius of the arc surface 103 is R, where 1.5 ≤ L / R ≤ 3. Experiments show that when the ratio of the length of the connecting surface 104 to the radius of the arc surface 103 is between 1.5 and 3, stress concentration can be significantly reduced. At this time, the structural strength of the arc surface 103 and the connecting surface 104 is the highest. Specifically, the ratio of the length of the connecting surface 104 to the radius of the arc surface 103 can be 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, or 3.0. Specifically, in this embodiment, the length of the connecting surface 104 is 4 mm, i.e., L = 4 mm, and the radius of the arc surface 103 is 2 mm, i.e., R = 2 mm, and L / R = 2.0. In other embodiments, the length of the connecting surface 104 and the radius of the arc surface 103 can be set to other values ​​according to the actual situation.

[0046] Continue to refer to Figures 1-3 The connecting surface 104 is frustum-shaped with an inclination angle of α, where 3°≤α≤7°. The angle between the connecting surface 104 and the axis of the housing 1 is the same as the angle between the connecting surface 104 and the outer circumferential surface of the outer ring 22 of the bearing 2. This arrangement allows the connecting surface 104 and the outer circumferential surface of the outer ring 22 of the bearing 2 to have a certain angle, which is relatively small. Specifically, the angle α between the connecting surface 104 and the axis of the housing 1 can be 3°, 3.5°, 4°, 4.5°, 5°, 5.5°, 6°, 6.5° or 7°. In this embodiment, it is 5°.

[0047] Continue to refer to Figures 1-3 There are two of each of the step surface 101, the abutment surface 102, and the bearing 2. The end faces of the outer rings 22 of the two bearings 2 abut against the two step surfaces 101 in a corresponding manner, and the two bearings 2 are located at the two ends of the two step surfaces 101 respectively. The outer peripheral surfaces of the outer rings 22 of the two bearings 2 abut against the two abutment surfaces 102 in a corresponding manner, so that the two bearings 2 can be stably installed inside the housing 1.

[0048] Continue to refer to Figures 1-3 The hub assembly also includes a spacer 3, which is disposed inside the housing 1, and both ends of the spacer 3 abut against the inner rings 21 of the two bearings 2 respectively. During the processing of the hub assembly, the clearance of the two bearings 2 can be controlled by controlling the distance between the two stepped surfaces 101, the length of the two bearings 2 and the length of the spacer 3, so as to ensure the performance of the two bearings 2.

[0049] Continue to refer to Figures 1-3 The housing 1, spacer 3, and two bearings 2 form a lubrication cavity 106. The housing 1 is provided with an oil inlet for injecting lubricating oil into the lubrication cavity 106. The lubricating oil in the lubrication cavity 106 can flow to the bearings 2, thereby lubricating the bearings 2. The hub assembly also includes an oil filling plug 61, which is used to open or close the oil filling port to facilitate oil filling and to close the oil filling port after oil filling is completed. Optionally, an oil seal 62 is provided on the inner side of the housing 1, and the oil seal 62 and the end cover of the bearing 2 seal the outer end of the bearing.

[0050] Continue to refer to Figures 1-3 The housing 1 has wheel bolt mounting holes 105. The wheel hub assembly also includes multiple wheel bolts 4. Each wheel bolt 4 includes a first mounting section 41, a second mounting section 42, and a threaded section 43 connected in sequence. The first mounting section 41 and the second mounting section 42 are both located within the wheel bolt mounting holes 105. The first mounting section 41 fits against the inner wall of the wheel bolt mounting hole 105, and one end of the outer wall of the second mounting section 42 connects to the outer wall of the first mounting section 41. The threaded section 43 is used to connect the wheel, thereby connecting the wheel hub assembly to the wheel. For the housing 1 made of materials such as aluminum alloy, the housing 1 is prone to deformation, and the wheel bolts 4 can easily squeeze the housing 1, causing crushing. To address this, the diameter of the second mounting section 42 gradually decreases in the direction away from the first mounting section 41, allowing the second mounting section 42 to undergo a certain displacement within the wheel bolt mounting holes 105. When the housing 1 undergoes slight deformation, the second mounting section 42 will not squeeze the housing 1.

[0051] Continue to refer to Figures 1-3The second mounting section 42 is frustum-shaped with an inclination angle of β, where 0° < β ≤ 3°. This creates a certain angle between the outer wall of the second mounting section 42 and the inner wall of the wheel bolt mounting hole 105. However, the angle is not too large, which would affect the structural strength of the wheel bolt 4. Specifically, the angle β between the outer wall of the second mounting section 42 and the inner wall of the wheel bolt mounting hole 105 can be 0.5°, 1°, 1.5°, 2°, 2.5°, or 3°. In this embodiment, it is 1°.

[0052] Continue to refer to Figures 1-3 The wheel bolt 4 also includes a bolt head 44 and a splined section 45 connected to the bolt head 44. The bolt head 44 is located outside the wheel bolt mounting hole 105 and abuts against the housing 1. The splined section 45 is connected to the first mounting section 41. The housing 1 also has a splined hole that is coaxial with and communicates with the wheel bolt mounting hole 105. The splined hole and the splined section 45 are splined to allow them to rotate synchronously, thereby improving the stability of the connection.

[0053] Continue to refer to Figures 1-3 The wheel hub assembly also includes multiple half-shaft bolts 5, all of which are double-ended studs. One end of the half-shaft bolt 5 is threaded to the housing 1, and the other end is threaded to the half-shaft, so as to avoid repeatedly disassembling the half-shaft bolt 5 relative to the housing 1 during routine maintenance, thereby protecting the housing 1.

[0054] This embodiment also provides a vehicle, including the aforementioned wheel hub assembly. The wheel hub assembly is connected to the differential via a half-shaft and is used to mount the wheel. The wheel hub assembly abuts against the stepped surface 101 through the end face of the outer ring 22, and the outer peripheral surface of the outer ring 22 abuts against the abutting surface 102, so that the bearing 2 is installed in place and the bearing 2 is limited. The transition surface and the arc surface 103 are spaced apart, that is, there is a certain gap between the transition surface and the arc surface 103. So that during the operation of the wheel hub assembly, the transition surface will not directly contact the arc surface 103, preventing the transition surface of the bearing 2 from squeezing the arc surface 103, thereby avoiding stress concentration on the arc surface 103.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A wheel hub assembly, characterized in that, include: The shell (1) has an inner wall with a stepped surface (101) and an abutting surface (102). The stepped surface (101) is perpendicular to the axis of the shell (1), and the abutting surface (102) is annular, with the center line of the abutting surface (102) coinciding with the axis of the shell (1). There is an arc surface (103) between the stepped surface (101) and the abutting surface (102). The bearing (2) includes an inner ring (21) and an outer ring (22). The end face of the outer ring (22) abuts against the stepped surface (101), and the outer peripheral surface of the outer ring (22) abuts against the abutting surface (102). There is a transition surface between the end face of the outer ring (22) and the outer peripheral surface, and the transition surface is spaced apart from the arc surface (103).

2. The wheel hub assembly according to claim 1, characterized in that, One end of the arc surface (103) is connected to the step surface (101), and the other end is located outside the abutting surface (102).

3. The wheel hub assembly according to claim 2, characterized in that, The arc surface (103) is connected to a connecting surface (104) at one end away from the step surface (101). The connecting surface (104) is flared and connected to the abutting surface (102).

4. The wheel hub assembly according to claim 3, characterized in that, Along the axial direction of the housing (1), the length of the connecting surface (104) is L, and the radius of the arc surface (103) is R, 1.5≤L / R≤3.

5. The wheel hub assembly according to claim 3, characterized in that, The connecting surface (104) is frustum-shaped, and the angle of inclination of the frustum is α, 3°≤α≤7°.

6. The wheel hub assembly according to any one of claims 1-5, characterized in that, The shell (1) is integrally formed from aluminum alloy material.

7. The wheel hub assembly according to any one of claims 1-5, characterized in that, Two of each of the step surface (101), the abutting surface (102), and the bearing (2) are provided. The end faces of the outer rings (22) of the two bearings (2) abut against the two step surfaces (101) in a one-to-one correspondence. The two bearings (2) are located at the two ends of the two step surfaces (101) respectively, and the outer peripheral surfaces of the outer rings (22) of the two bearings (2) abut against the two abutting surfaces (102) in a one-to-one correspondence.

8. The wheel hub assembly according to claim 7, characterized in that, It also includes a spacer (3), which is disposed inside the housing (1), and the two ends of the spacer (3) respectively abut against the inner rings (21) of the two bearings (2).

9. The wheel hub assembly according to claim 8, characterized in that, The housing (1), the spacer (3), and the two bearings (2) form a lubrication cavity (106). The housing (1) is provided with an oil inlet for injecting lubricating oil into the lubrication cavity (106). The lubricating oil in the lubrication cavity (106) can flow to the bearings (2). The hub assembly also includes an oil inlet plug (61) for opening or closing the oil inlet.

10. The wheel hub assembly according to any one of claims 1-5, characterized in that, The housing (1) has wheel bolt mounting holes (105), and the wheel hub assembly also includes a plurality of wheel bolts (4). Each wheel bolt (4) includes a first mounting section (41), a second mounting section (42), and a threaded section (43) connected in sequence. The first mounting section (41) and the second mounting section (42) are both located inside the wheel bolt mounting holes (105), and the first mounting section (41) is in contact with the inner wall of the wheel bolt mounting holes (105). Along the direction away from the first mounting section (41), the diameter of the second mounting section (42) gradually decreases, and the threaded section (43) is used to connect the wheel.

11. The wheel hub assembly according to claim 10, characterized in that, The second installation section (42) is frustum shaped and the frustum tilt angle is β, 0°<β≤3°.

12. The wheel hub assembly according to claim 10, characterized in that, The wheel bolt (4) also includes a bolt head (44) and a splined section (45) connected to the bolt head (44). The bolt head (44) is located outside the wheel bolt mounting hole (105) and abuts against the housing (1). The splined section (45) is connected to the first mounting section (41). The housing (1) also has a splined hole that is coaxial with and communicates with the wheel bolt mounting hole (105). The splined hole and the splined section (45) are splined together.

13. The wheel hub assembly according to any one of claims 1-5, characterized in that, It also includes multiple half-shaft bolts (5), all of which are double-ended studs, and one end of each half-shaft bolt (5) is threaded to the housing (1), and the other end is threaded to the half-shaft.

14. A vehicle, characterized in that, Includes a wheel assembly as described in any one of claims 1-13, the wheel assembly being connected to a differential via a half-shaft, and the wheel assembly being used to mount a wheel.

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