Hub brake disc assembly and vehicle

Abstract

The hub brake disc assembly comprises a brake disc, a hub ring and a hub assembly, the brake disc is provided with a first mounting hole and a second mounting hole which are through in the axial direction, the radial size of the second mounting hole is larger than that of the first mounting hole, and a first step face is formed at the joint of the second mounting hole and the first mounting hole; the hub ring is provided with a third mounting hole penetrating in the axial direction, the outer surface of one end, in the axial direction, of the hub assembly is provided with a first mounting protrusion protruding outwards in the radial direction, and the brake disc and the hub ring are arranged on the outer surface of the hub assembly in a penetrating mode through the second mounting hole, the first mounting hole and the third mounting hole in the axial direction. The first installation protrusion of the hub assembly abuts against the first step face, an installation part is formed at the end, away from the first installation protrusion in the axial direction, of the brake disc, and the installation part is fixedly connected with the hub assembly through the hub ring. Therefore, according to the hub brake disc assembly, the hub assembly does not need to be disassembled when the brake disc is disassembled and replaced, so that the disassembly and assembly process of the brake disc is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub brake discs, in particular to a wheel hub brake disc assembly and a vehicle. Background Art

[0002] The brake disc in the traditional wheel hub brake disc assembly is a built-in structure. Before the vehicle axle is assembled with the traditional wheel hub brake disc assembly, the wheel hub assembly and the brake disc must be assembled as an integrated part, and then the wheel hub brake disc assembly is installed as a whole on the vehicle axle. However, the traditional wheel hub assembly is usually installed on the outside of the brake disc. Therefore, when the brake disc needs to be replaced, the wheel hub brake disc assembly must be removed first, and then the brake disc is disassembled from the wheel hub assembly, and then a new brake disc is replaced. Finally, the wheel hub brake disc assembly with the new brake disc is assembled to the vehicle axle. The assembly process is relatively cumbersome, which invisibly increases the cost of using the whole vehicle. At the same time, since the brake disc is a wearing part with a short replacement cycle (about once every two years), and the grease-lubricated bearing unit is maintenance-free for life, frequent disassembly and assembly of the wheel hub assembly can easily damage the bearing unit, affecting the service life of the bearing. 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, the first purpose of the utility model is to provide a wheel hub brake disc assembly, which does not require the wheel hub assembly to be disassembled and replaced when the brake disc is disassembled, making the disassembly and assembly process of the brake disc simpler and more convenient, and at the same time, eliminating the impact of frequent disassembly and assembly of the wheel hub bearing on the service life of the bearing.

[0004] The second objective of the present invention is to provide a vehicle.

[0005] To achieve the above-mentioned purpose, the first embodiment of the utility model provides a wheel hub brake disc assembly, including: a brake disc and a wheel hub assembly, the wheel hub assembly including: a wheel hub ring and a wheel hub assembly;

[0006] The brake disc has a first mounting hole and a second mounting hole that penetrate axially, the radial size of the second mounting hole is larger than that of the first mounting hole, and a first step surface is formed at the connection between the first mounting hole and the second mounting hole, the wheel hub ring has a third mounting hole that penetrates axially, and the outer surface of one axial end of the wheel hub assembly has a first mounting protrusion that protrudes radially outward, the brake disc and the wheel hub ring are axially penetrated on the outer surface of the wheel hub assembly via the second mounting hole, the first mounting hole and the third mounting hole, and the first mounting protrusion of the wheel hub assembly abuts against the first step surface, and a mounting portion is formed at one end of the brake disc axially away from the first mounting protrusion, and the mounting portion is fixedly connected to the wheel hub assembly via the wheel hub ring.

[0007] According to the hub brake disc assembly of the embodiment of the present utility model, when disassembling and replacing the brake disc, the hub assembly does not need to be disassembled, making the disassembly and assembly process of the brake disc simpler and more convenient. At the same time, the influence of frequent disassembly and assembly of the hub bearing on the service life of the bearing is also eliminated.

[0008] According to an embodiment of the present utility model, the hub ring has a fourth mounting hole penetrating axially, and the radial dimension of the fourth mounting hole is larger than that of the third mounting hole.

[0009] The hub brake disc assembly further includes a first fastener, and the mounting portion is inserted between the inner surface of the fourth mounting hole and the outer surface of the hub assembly.

[0010] In the radial direction, the first fastener passes through the fourth mounting hole of the hub ring, the mounting portion of the brake disc, and the hub assembly to fixedly connect the hub ring and the brake disc to the hub assembly.

[0011] According to an embodiment of the present utility model, the hub assembly includes: a hub and a bearing assembly. A fifth mounting hole penetrating in the axial direction of the hub assembly is formed inside the hub, and the bearing assembly is fixedly arranged in the fifth mounting hole.

[0012] According to an embodiment of the present utility model, a sixth mounting hole is further formed inside the hub. The sixth mounting hole is axially located inside the fifth mounting hole, and the radial dimension of the sixth mounting hole is smaller than that of the fifth mounting hole. A second step surface is formed at the connection of the fifth mounting hole and the sixth mounting hole, and the bearing assembly abuts against the second step surface.

[0013] According to an embodiment of the present utility model, the bearing assembly includes: a bearing outer ring, a bearing inner ring, and a bearing. The bearing is installed between the bearing outer ring and the bearing inner ring. The outer surface of the bearing outer ring is fitted and assembled with the inner surface of the fifth mounting hole, and the inner side in the axial direction of the bearing outer ring abuts against the second step surface.

[0014] According to an embodiment of the present utility model, the bearing assembly includes: a bearing outer oil seal. The bearing outer oil seal is arranged inside the bearing outer ring and is located on the side far from the outer end of the bearing.

[0015] According to an embodiment of the present utility model, the hub assembly further includes: a gear ring. A third step surface is formed at one end of the first mounting protrusion axially away from the first step surface, and the gear ring is abutted and installed on the third step surface.

[0016] According to an embodiment of the present utility model, the hub ring has a seventh mounting hole, and the seventh mounting hole is fixedly connected to the wheel through a second fastener.

[0017] According to an embodiment of the present utility model, a fourth step surface is formed at one end of the hub ring axially close to the brake disc, and the mounting head of the second fastener abuts against the fourth step surface.

[0018] To achieve the above object, an embodiment of the second aspect of the present utility model provides a vehicle, including the hub brake disc assembly in the embodiment of the first aspect.

[0019] For the vehicle according to the embodiment of the present utility model, by providing the above-mentioned hub brake disc assembly, when disassembling and replacing the brake disc, it is not necessary to disassemble the hub assembly, making the disassembly and assembly process of the brake disc simpler and more convenient. At the same time, the influence of frequent disassembly and assembly of the hub bearing on the service life of the bearing is also eliminated.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a traditional hub brake disc assembly according to an embodiment of the present utility model;

[0022] Figure 2 Schematic diagram of a hub brake disc assembly according to an embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of the assembly of a hub brake disc assembly and an integral axle according to an embodiment of the present utility model;

[0024] Figure 4 Schematic diagram of a brake disc according to an embodiment of the present utility model;

[0025] Figure 5 Schematic diagram of a hub ring according to an embodiment of the present utility model;

[0026] Figure 6 Schematic diagram of a hub assembly according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] Hub brake disc assembly 100;

[0029] Brake disc 1; First mounting hole 11; Second mounting hole 12; First step surface 13; Mounting portion 14;

[0030] Hub ring 2; Third mounting hole 21; Fourth mounting hole 22; Seventh mounting hole 23; Fourth step surface 24;

[0031] Hub assembly 3; First mounting protrusion 31; Third step surface 311; Hub 32; Bearing assembly 33; Bearing outer ring 331; Bearing inner ring 332; Bearing 333; Bearing outer oil seal 334; Fifth mounting hole 34; Sixth mounting hole 35; Second step surface 36; Gear ring 37;

[0032] A first fastener 4;

[0033] A second fastener 5;

[0034] Conventional wheel hub brake disc assembly 200; conventional brake disc 201; conventional wheel hub assembly 202;

[0035] Vehicle bridge 300. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] It should be noted that if Figure 1 As shown, the brake disc in the conventional wheel hub brake disc assembly 200 is a built-in structure. Before the vehicle bridge 300 is assembled with the conventional wheel hub brake disc assembly 200, the conventional wheel hub assembly 202 and the conventional brake disc 201 must be assembled into an integral part, and then the conventional wheel hub brake disc assembly 200 is installed as a whole on the vehicle bridge 300. However, the conventional wheel hub assembly 202 is usually installed on the outside of the conventional brake disc 201, that is, the conventional brake disc 201 is located between the conventional wheel hub assembly 202 and the vehicle bridge 300. Therefore, When the brake disc needs to be replaced, the wheel hub brake disc assembly must be removed first, and then the brake disc is disassembled from the wheel hub assembly, and then a new brake disc is replaced, and finally the wheel hub brake disc assembly with the new brake disc is assembled to the vehicle bridge 300. The assembly process is relatively cumbersome, which invisibly increases the cost of using the entire vehicle. At the same time, since the brake disc is a wearing part with a short replacement cycle (about once every two years), and the grease-lubricated bearing unit is maintenance-free for life, frequent disassembly and assembly of the wheel hub assembly can easily damage the bearing unit, affecting the service life of the bearing.

[0038] Based on this, the present application proposes a wheel hub brake disc assembly 100, which does not require disassembly of the wheel hub assembly 3 when disassembling and replacing the brake disc 1, making the disassembly and assembly process of the brake disc 1 simpler and more convenient. At the same time, it also eliminates the impact of frequent disassembly and assembly of the wheel hub bearing on the service life of the bearing.

[0039] The hub brake disc assembly 100 and the vehicle provided in the embodiment of the present utility model are described below with reference to the accompanying drawings.

[0040] like Figures 2 - 6 As shown, the wheel hub brake disc assembly 100 according to the first embodiment of the utility model comprises: a brake disc 1 and a wheel hub 32 component, and the wheel hub 32 component comprises: a wheel hub ring 2 and a wheel hub assembly 3.

[0041] Among them, the brake disc 1 has a first mounting hole 11 and a second mounting hole 12 that penetrate axially. The radial dimension of the second mounting hole 12 is larger than that of the first mounting hole 11, and a first step surface 13 is formed at the connection of the first mounting hole 11 and the second mounting hole 12. The hub ring 2 has a third mounting hole 21 that penetrates axially. The outer surface of one end of the hub assembly 3 in the axial direction has a first mounting protrusion 31 that protrudes radially outward. The brake disc 1 and the hub ring 2 are axially passed through the outer surface of the hub assembly 3 via the second mounting hole 12, the first mounting hole 11, and the third mounting hole 21, and the first mounting protrusion 31 of the hub assembly 3 abuts against the first step surface 13. An installation portion 14 is formed at one end of the brake disc 1 axially away from the first mounting protrusion 31, and the installation portion 14 is fixedly connected to the hub assembly 3 via the hub ring 2.

[0042] Specifically, taking the hub brake disc assembly 100 arranged in the Figure 2 and Figure 3 shown placement direction as an example for description. Among them, the hub assembly 3 is fixedly connected to the vehicle integral bridge 300. When the brake disc 1 needs to be installed, the second mounting hole 12 and the first mounting hole 11 of the brake disc 1 are axially passed through the outer surface of the hub assembly 3 from left to right, and it is ensured that the first mounting protrusion 31 of the hub assembly 3 abuts against the first step surface 13, so as to realize the positioning of the brake disc 1. Subsequently, the third mounting hole 21 of the hub ring 2 is axially passed through the outer surface of the hub assembly 3 from left to right, so that the hub ring 2 is sleeved on the outer surface of the hub assembly 3. When the hub ring 2 is installed in place, for example, after the hub ring 2 abuts and assembles with the installation portion 14 of the brake disc 1, the installation portion 14 of the brake disc 1 and the hub assembly 3 are fixed together through the hub ring 2, so as to realize the fixed installation of the brake disc 1. During the entire installation process, there is no need to disassemble the hub assembly 3 and the vehicle integral bridge 300, and the brake disc 1 and the hub ring 2 can be sleeved on the hub assembly 3 in sequence.

[0043] Furthermore, when the brake disc 1 needs to be replaced, first release the fixing restriction of the installation portion 14 of the brake disc 1 and the hub assembly 3 by the hub ring 2, then move the hub ring 2 axially from right to left so that the hub ring 2 is separated from the hub assembly 3, and then move the brake disc 1 axially from right to left so that the brake disc 1 is separated from the hub assembly 3. During the entire disassembly process, the movement of the brake disc 1 and the hub ring 2 is not restricted by the hub assembly 3, and there is no need to disassemble the hub assembly 3 and the vehicle integral bridge 300, that is, the disassembly of the hub assembly 3 is realized. When the brake disc 1 is disassembled, a new brake disc 1 can be replaced. The installation process of the new brake disc 1 refers to the above, and will not be elaborated here.

[0044] Thus, when disassembling and replacing the brake disc 1 of the hub brake disc assembly 100, it is not necessary to disassemble the hub assembly 3, making the disassembly and assembly process of the brake disc 1 simpler and more convenient. At the same time, the influence of frequent disassembly and assembly of the hub bearing on the bearing service life is also eliminated.

[0045] In an embodiment of the present invention, as Figures 2 - 6 shown, the hub ring 2 has a fourth mounting hole 22 that penetrates axially. The radial dimension of the fourth mounting hole 22 is larger than that of the third mounting hole 21. The hub brake disc assembly 100 further includes a first fastener 4. The mounting portion 14 is inserted between the inner surface of the fourth mounting hole 22 and the outer surface of the hub assembly 3. In the radial direction, the first fastener 4 passes through the fourth mounting hole 22 of the hub ring 2, the mounting portion 14 of the brake disc 1, and the hub assembly 3 to fixedly connect the hub ring 2 and the brake disc 1 to the hub assembly 3.

[0046] Specifically, as Figure 5 shown, the radial dimension of the fourth mounting hole 22 on the right side of the hub ring 2 is larger than that of the third mounting hole 21 on the left side. A fifth step surface is formed at the connection between the third mounting hole 21 and the fourth mounting hole 22. When the hub ring 2 and the brake disc 1 are assembled, the mounting portion 14 of the brake disc 1 is inserted between the inner surface of the fourth mounting hole 22 and the outer surface of the hub assembly 3. Further, the right side of the mounting portion 14 can abut against the fifth step surface. With such a setting, the brake disc 1 is clamped between the hub ring 2 and the hub assembly 3, improving the assembly accuracy.

[0047] Further, in the radial direction, the first fixing holes, the second fixing holes, and the third fixing holes respectively corresponding to the hub ring 2, the mounting portion 14 of the brake disc 1, and the hub 32 assembly are coaxially arranged. Optionally, the first fastener 4 is set as a bolt, and the first fixing holes, the second fixing holes, and the third fixing holes are all threaded holes. Thus, the hub ring 2, the brake disc 1, and the hub assembly 3 are fixed as a whole by screwing the first fastener 4 with the first fixing holes, the second fixing holes, and the third fixing holes, and the installation and disassembly are relatively convenient.

[0048] In an embodiment of the present invention, as Figure 6 shown, the hub assembly 3 includes: a hub 32 and a bearing assembly 33. A fifth mounting hole 34 that penetrates axially in the hub 32 is formed inside the hub 32, and the bearing assembly 33 is fixedly arranged in the fifth mounting hole 34.

[0049] Specifically, the hub assembly 3 is composed of a hub 32 and a bearing assembly 33. It can be understood that the outer surface of the hub 32 has a first mounting protrusion 31. When the brake disc 1, the hub ring 2 and the hub assembly 3 are assembled in cooperation, the brake disc 1 and the hub ring 2 are sleeved on the outer surface of the hub 32 in sequence. Among them, the first stepped surface 13 of the brake disc 1 abuts against the first mounting protrusion 31 on the outer surface of the hub 32. Further, a fifth mounting hole 34 penetrating in the axial direction of the hub assembly 3 is formed inside the hub 32, and the bearing assembly 33 is fixed inside the hub 32. In this way, when disassembling and replacing the brake disc 1, it is not necessary to disassemble the bearing assembly 33 inside the hub assembly 3. Moreover, compared with the traditional split structure of the bearing 333, the hub assembly 3 in this application has fewer parts, lighter weight, and the installation and disassembly of the bearing assembly 33 are relatively simple.

[0050] In an embodiment of the present invention, as Figure 6 shown, a sixth mounting hole 35 is further formed inside the hub 32. The sixth mounting hole 35 is axially located inside the fifth mounting hole 34, and the radial dimension of the sixth mounting hole 35 is smaller than that of the fifth mounting hole 34. A second stepped surface 36 is formed at the connection between the fifth mounting hole 34 and the sixth mounting hole 35, and the bearing assembly 33 abuts against the second stepped surface 36. Specifically, taking the placement direction of the hub assembly 3 shown in Figure 6 as an example for description, during the installation process of the bearing assembly 33, the bearing assembly 33 is inserted into the fifth mounting hole 34 from the left side, and the bearing assembly 33 is moved axially to the right so that the right side of the bearing assembly 33 abuts against the second stepped surface 36. In this way, the quick installation and positioning of the bearing assembly 33 are realized, and the assembly efficiency is greatly improved.

[0051] In an embodiment of the present invention, as Figure 6 shown, the bearing assembly 33 includes: a bearing outer ring 331, a bearing inner ring 332 and a bearing 333. The bearing 333 is installed between the bearing outer ring 331 and the bearing inner ring 332. The outer surface of the bearing outer ring 331 is assembled in cooperation with the inner surface of the fifth mounting hole 34, and the inner side in the axial direction of the bearing outer ring 331 abuts against the second stepped surface 36.

[0052] Specifically, the bearing 333 is installed between the bearing outer ring 331 and the bearing inner ring 332 and jointly forms the bearing assembly 33. Among them, the outer surface of the bearing outer ring 331 is assembled in cooperation with the inner surface of the fifth mounting hole 34, and the right side of the bearing outer ring 331 abuts against the second stepped surface 36. For example, since the bearing assembly 33 and the hub 32 do not need to be disassembled frequently, the outer surface of the bearing outer ring 331 and the inner surface of the fourth mounting hole 22 are in interference fit, so as to improve the connection strength between the bearing assembly 33 and the hub 32.

[0053] In an embodiment of the present invention, asFigure 6 As shown in the figure, the bearing assembly 33 includes: an outer bearing oil seal 334, which is disposed within the outer bearing ring 331 and is located on the side away from the outer end of the bearing 333. That is to say, an outer bearing oil seal 334 is correspondingly arranged on the outer side of each bearing 333 to achieve the oil sealing function of the bearing 333. In this way, it can play a role in dust prevention and prevent the lubricating grease from leaking out of the bearing 333 under high-temperature operating conditions.

[0054] In an embodiment of the present invention, as Figure 6 shown in the figure, the hub assembly 3 further includes: a gear ring 37. A third stepped surface 311 is formed at one end of the first mounting protrusion 31 along the axial direction away from the first stepped surface 13, and the gear ring 37 is abutted and mounted on the third stepped surface 311. That is to say, the hub assembly 3 further includes a gear ring 37. The gear ring 37 can be configured as a stamping type ABS gear ring 37, and the gear ring 37 is fixedly mounted on the third stepped surface 311 of the first mounting protrusion 31, and the mounting method can be detachable.

[0055] In an embodiment of the present invention, as Figure 5 shown in the figure, the hub ring 2 has a seventh mounting hole 23, and the seventh mounting hole 23 is fixedly connected to the wheel through a second fastener 5. Specifically, the second fastener 5 passes through the seventh mounting hole 23 and is also fixedly connected to the wheel, so that the hub brake disc assembly 100 is fixedly mounted on the wheel through the hub ring 2. When it is necessary to disassemble the hub brake disc assembly 100, only the second fastener 5 needs to be disassembled. The second fastener 5 includes but is not limited to bolts, etc., and the disassembly process is relatively simple and convenient.

[0056] In an embodiment of the present invention, as Figure 5 shown in the figure, a fourth stepped surface 24 is formed at one end of the hub ring 2 along the axial direction close to the brake disc 1, and the mounting head of the second fastener 5 abuts against the fourth stepped surface 24. That is to say, when the second fastener 5 is installed in cooperation with the seventh mounting hole 23 of the hub ring 2, the mounting head of the second fastener 5 abuts against the fourth stepped surface 24 of the hub ring 2, which is beneficial to ensuring the installation accuracy.

[0057] To achieve the above object, a second aspect embodiment of the present invention proposes a vehicle, including the hub brake disc assembly 100 in the first aspect embodiment.

[0058] According to the vehicle of the embodiment of the present invention, when disassembling and replacing the brake disc 1, the hub assembly 3 does not need to be disassembled, which makes the disassembly and assembly process of the brake disc 1 simpler and more convenient. At the same time, it also eliminates the influence of frequent disassembly and assembly of the hub bearing on the service life of the bearing.

[0059] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, features defined as "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0060] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A hub brake disc assembly (100), characterized in that, Comprising: A brake disc (1) and a hub assembly, the hub assembly comprising: a hub ring (2) and a hub assembly (3); The brake disc (1) has a first mounting hole (11) and a second mounting hole (12) that penetrate axially. The radial dimension of the second mounting hole (12) is greater than that of the first mounting hole (11), and a first stepped surface (13) is formed at the connection between the first mounting hole (11) and the second mounting hole (12). The hub ring (2) has a third mounting hole (21) that penetrates axially. The outer surface of one end of the hub assembly (3) in the axial direction has a first mounting protrusion (31) that protrudes radially outward. The brake disc (1) and the hub ring (2) are axially inserted through the outer surface of the hub assembly (3) via the second mounting hole (12), the first mounting hole (11), and the third mounting hole (21), and the first mounting protrusion (31) of the hub assembly (3) abuts against the first stepped surface (13). An installation portion (14) is formed at one end of the brake disc (1) axially away from the first mounting protrusion (31), and the installation portion (14) is fixedly connected to the hub assembly (3) via the hub ring (2).

2. The hub brake disc assembly (100) according to claim 1, characterized in that, The hub ring (2) has a fourth mounting hole (22) that penetrates axially. The radial dimension of the fourth mounting hole (22) is greater than that of the third mounting hole (21). The hub brake disc assembly (100) further includes a first fastener (4). The installation portion (14) is inserted between the inner surface of the fourth mounting hole (22) and the outer surface of the hub assembly (3). In the radial direction, the first fastener (4) passes through the fourth mounting hole (22) of the hub ring (2), the installation portion (14) of the brake disc (1), and the hub assembly (3) to fixedly connect the hub ring (2) and the brake disc (1) to the hub assembly (3).

3. The hub brake disc assembly (100) according to claim 2, characterized in that, The hub assembly (3) includes: a hub (32) and a bearing assembly (33). The hub (32) has a fifth mounting hole (34) formed inside it that penetrates in the axial direction of the hub assembly (3), and the bearing assembly (33) is fixedly provided in the fifth mounting hole (34).

4. The hub brake disc assembly (100) according to claim 3, characterized in that, A sixth mounting hole (35) is further formed inside the hub (32). The sixth mounting hole (35) is axially located inside the fifth mounting hole (34), and the radial dimension of the sixth mounting hole (35) is smaller than that of the fifth mounting hole (34). A second stepped surface (36) is formed at the connection between the fifth mounting hole (34) and the sixth mounting hole (35), and the bearing assembly (33) abuts against the second stepped surface (36).

5. The hub brake disc assembly (100) according to claim 4, characterized in that, The bearing assembly (33) includes: an outer bearing ring (331), an inner bearing ring (332), and a bearing (333). The bearing (333) is installed between the outer bearing ring (331) and the inner bearing ring (332). The outer surface of the outer bearing ring (331) is fitted and assembled with the inner surface of the fifth mounting hole (34), and the inner side of the outer bearing ring (331) in the axial direction abuts against the second step surface (36).

6. The hub brake disc assembly (100) according to claim 5, characterized in that, The bearing assembly (33) includes: an outer bearing oil seal (334). The outer bearing oil seal (334) is provided inside the outer bearing ring (331), and the outer bearing oil seal (334) is located on a side away from the outer end of the bearing (333).

7. The hub brake disc assembly (100) according to claim 5, characterized in that, The hub assembly (3) further includes: a gear ring (37). A third step surface (311) is formed at one end of the first mounting protrusion (31) axially away from the first step surface (13). The gear ring (37) is mounted in abutment on the third step surface (311).

8. The hub brake disc assembly (100) according to any one of claims 1-7, characterized in that, The hub ring (2) has a seventh mounting hole (23). The seventh mounting hole (23) is fixedly connected to the wheel by a second fastener (5).

9. The hub brake disc assembly (100) according to claim 8, wherein, One end of the hub ring (2) axially close to the brake disc (1) forms a fourth step surface (24). The mounting head of the second fastener (5) abuts against the fourth step surface (24).

10. A vehicle, characterized in that, Including the hub brake disc assembly (100) according to any one of claims 1-9.

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