Brake disc assembly and vehicle

Abstract

The invention belongs to the technical field of vehicles, and discloses a brake disc assembly and a vehicle, the brake disc assembly is used for being connected with a hub assembly and comprises a brake disc and a screw, the brake disc is provided with a first connecting face and a second connecting face which are oppositely arranged at intervals, and the first connecting face is located on the side close to the hub assembly; the first heat insulation pad is arranged between the first connecting surface and the hub assembly, so that heat transfer between the brake disc and the hub assembly is hindered through the first heat insulation pad, and conduction of a large amount of heat from the brake disc to the hub assembly is avoided; the screw is provided with a head part and a rod part, the rod part penetrates through the brake disc and can be in threaded connection with the hub assembly, and the rod part and the brake disc are arranged at intervals, so that heat transfer is hindered, and conduction of a large amount of heat from the brake disc to the rod part is avoided; and a second heat insulation pad is arranged between the head part and the second connecting surface, so that heat transfer between the brake disc and the head part is hindered through the second heat insulation pad, and conduction of a large amount of heat from the brake disc to the head part is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a brake disc assembly and a vehicle. Background Art

[0002] The brake disc is a critical component of the vehicle chassis. It forms a friction pair with the friction element of the disc brake, generating braking force. During braking, frequent friction occurs between the disc and the friction element, converting the vehicle's kinetic and potential energy into heat energy, which can easily cause the disc to overheat. This heat can then be transferred to the wheel hub, causing it to overheat.

[0003] In this regard, the existing technology provides a brake disc, which includes two disc bodies, which are connected by a number of columns. There are gaps between the columns, so that the heat of the brake disc can be conducted out through the gaps between the columns, thereby improving the heat dissipation effect of the brake disc. However, under frequent braking conditions such as going down long slopes in mountainous areas, the brake disc may still overheat, which in turn causes the wheel hub to overheat. Summary of the Invention

[0004] According to one aspect of the present invention, the present invention provides a brake disc assembly to solve the problem in the prior art that the brake disc may still overheat under frequent braking conditions such as going down a long slope in mountainous areas, thereby causing the wheel hub to overheat.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Brake disc assembly, used to connect to the wheel hub assembly; includes:

[0007] A brake disc having a first connecting surface and a second connecting surface that are opposite and spaced apart, wherein the first connecting surface is located on a side close to the wheel hub assembly, and a first thermal insulation pad is provided between the first connecting surface and the wheel hub assembly;

[0008] The screw has a head and a rod, wherein the rod passes through the brake disc and can be threadedly connected to the wheel hub assembly. The rod is spaced apart from the brake disc, and a second thermal insulation pad is provided between the head and the second connecting surface.

[0009] As a preferred solution of the brake disc assembly, a heat insulating sleeve is provided between the rod and the brake disc.

[0010] As a preferred solution of the brake disc assembly, along the extension direction of the screw, one end of the thermal insulation sleeve abuts against the first thermal insulation pad, and the other end abuts against the second thermal insulation pad.

[0011] As a preferred solution of the brake disc assembly, the brake disc includes a first disc body and a second disc body that are arranged in parallel and at intervals, and the first disc body and the second disc body are connected by a column assembly.

[0012] As a preferred solution for the brake disc assembly, along the radial direction of the brake disc, the column assembly includes an inner column group, a middle column group and an outer column group arranged in sequence from the inside to the outside, the inner column group includes a plurality of inner columns arranged at intervals along the circumferential direction of the brake disc, the middle column group includes a plurality of middle columns arranged at intervals along the circumferential direction of the brake disc, and the outer column group includes a plurality of outer columns arranged at intervals along the circumferential direction of the brake disc.

[0013] As a preferred solution of the brake disc assembly, the cross-sectional area of the inner column and the cross-sectional area of the outer column are both larger than the cross-sectional area of the middle column.

[0014] As a preferred solution of the brake disc assembly, the cross-section of the outer column is runway-shaped.

[0015] As a preferred solution of the brake disc assembly, the brake disc includes a first disc body and a second disc body that are parallel and spaced apart, the first disc body is provided with a first groove, the second disc body is provided with a second groove, the bottom wall of the first groove is the first connecting surface, and the bottom wall of the second groove is the second connecting surface.

[0016] According to another aspect of the present invention, a vehicle is provided, comprising the above-mentioned brake disc assembly and a wheel hub assembly, wherein the first connecting surface of the brake disc is located on a side close to the wheel hub assembly, and a first thermal insulation pad is arranged between the first connecting surface and the wheel hub assembly, and the rod portion of the screw passes through the brake disc and is threadedly connected to the wheel hub assembly.

[0017] As a preferred solution for the vehicle, the brake disc has a central through hole, the wheel hub assembly includes a hub body and a brake disc connecting portion arranged on the outer periphery of the hub body, the rod portion passes through the brake disc and is threadedly connected to the brake disc connecting portion, the hub body passes through the central through hole, and the outer periphery of the hub body is spaced apart from the hole wall of the central through hole.

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a brake disc assembly for connecting to a wheel hub assembly, comprising a brake disc and a screw. The brake disc has a first connecting surface and a second connecting surface that are opposite and spaced apart. The first connecting surface is located on a side close to the wheel hub assembly, and a first thermal insulation pad is disposed between the first connecting surface and the wheel hub assembly. The first thermal insulation pad acts to block heat transfer between the brake disc and the wheel hub assembly, thereby preventing a large amount of heat from being transferred from the brake disc to the wheel hub assembly. The screw has a head and a stem. The stem passes through the brake disc and is threadably connected to the wheel hub assembly. The stem is spaced apart from the brake disc, thereby blocking heat transfer, thereby preventing a large amount of heat from being transferred from the brake disc to the stem. A second thermal insulation pad is disposed between the head and the second connecting surface. The second thermal insulation pad acts to block heat transfer between the brake disc and the head, thereby preventing a large amount of heat from being transferred from the brake disc to the head. The brake disc assembly can block heat transfer from the brake disc to the wheel hub assembly, the head, and the stem, thereby preventing overheating of the wheel hub assembly and the screw connected to the wheel hub assembly.

[0020] The present invention also provides a vehicle, including the above-mentioned brake disc assembly and a wheel hub assembly, wherein the first connecting surface of the brake disc is located on a side close to the wheel hub assembly, and a first thermal insulation pad is arranged between the first connecting surface and the wheel hub assembly, and the rod of the screw passes through the brake disc and is threadedly connected to the wheel hub assembly. The brake disc assembly can prevent the heat of the brake disc from being transferred to the wheel hub assembly, the head and the rod, and can prevent the wheel hub assembly and the screws connected to the wheel hub assembly from overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the brake disc assembly and the wheel hub assembly in an embodiment of the present invention;

[0022] Figure 2 is an enlarged view of the partial structure of the brake disc assembly and the wheel hub assembly in an embodiment of the present invention;

[0023] Figure 3 is a first structural schematic diagram of a brake disc assembly according to an embodiment of the present invention;

[0024] Figure 4 is a second structural schematic diagram of a brake disc assembly according to an embodiment of the present invention;

[0025] Figure 5 is a third structural schematic diagram of a brake disc assembly according to an embodiment of the present invention;

[0026] Figure 6 2 is a schematic structural diagram of a wheel hub assembly according to an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Wheel hub assembly; 101. End face; 102. Threaded hole; 11. Wheel hub body; 12. Brake disc connection;

[0029] 2. Brake disc; 201. First connection surface; 202. Second connection surface; 203. Connecting through hole; 204. Center through hole; 21. First disc body; 211. First groove; 22. Second disc body; 221. Second groove;

[0030] 3. Screw; 31. Head; 32. Shaft;

[0031] 41. First thermal insulation pad; 42. Second thermal insulation pad; 43. Thermal insulation sleeve;

[0032] 5. Column assembly; 51. Inner column group; 511. Inner column; 52. Middle column group; 521. Middle column; 53. Outer column group; 531. Outer column; 54. Ventilation duct. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0034] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0037] When a vehicle brakes, friction frequently occurs between the brake disc and the friction element, converting the vehicle's kinetic and potential energy into heat energy in the brake disc, which can easily lead to overheating. Heat from the brake disc can then be transferred to the wheel hub, causing it to overheat. To address this issue, existing technologies offer a brake disc that includes two disc bodies connected by a number of columns. Gaps are created between the columns, allowing heat from the brake disc to be transferred away through the gaps between the columns, improving the disc's heat dissipation. However, under frequent braking conditions, such as descending long slopes in mountainous areas, the brake disc can still overheat, potentially leading to wheel hub overheating.

[0038] In response to the above problems, this embodiment provides a brake disc assembly to solve the problem in the prior art that the brake disc may still overheat under frequent braking conditions such as going down a long slope in mountainous areas, thereby causing the wheel hub to overheat. It can be used in the field of vehicle technology.

[0039] Reference Figures 1-6 The brake disc assembly is used to connect the wheel hub assembly 1, including a brake disc 2 and a screw 3. The brake disc 2 has a first connecting surface 201 and a second connecting surface 202 that are opposite to and spaced apart. The first connecting surface 201 is located on the side close to the wheel hub assembly 1, and a first thermal insulation pad 41 is provided between the first connecting surface 201 and the wheel hub assembly 1, so that the first thermal insulation pad 41 hinders the heat transfer between the brake disc 2 and the wheel hub assembly 1, thereby preventing a large amount of heat from being conducted from the brake disc 2 to the wheel hub assembly 1; the screw 3 has a head 31 and a rod 32, the rod 32 passes through the brake disc 2 and can be threadedly connected to the wheel hub assembly 1, specifically, the brake disc 2 has a connecting through hole 203, the rod 32 of the screw 3 passes through the connecting through hole 203, the wheel hub assembly 1 has a threaded hole 102, and the rod 32 of the screw 3 is threadedly connected to the threaded hole 102. The rod 32 is spaced apart from the brake disc 2, thereby hindering heat transfer and preventing large amounts of heat from being transferred from the brake disc 2 to the rod 32. A second thermal insulation pad 42 is provided between the head 31 and the second connecting surface 202, thereby hindering heat transfer between the brake disc 2 and the head 31 and preventing large amounts of heat from being transferred from the brake disc 2 to the head 31. This brake disc assembly can prevent heat from the brake disc 2 from being transferred to the wheel hub assembly 1, the head 31, and the rod 32, thereby preventing overheating of the wheel hub assembly 1 and the screws 3 connected to the wheel hub assembly 1.

[0040] Continue to refer to Figures 1-6 A heat insulating sleeve 43 is provided between the rod 32 and the brake disc 2, that is, a heat insulating sleeve 43 is provided in the gap between the rod 32 and the brake disc 2, which can further improve the heat insulation effect compared with the solution without the heat insulating sleeve 43.

[0041] Optionally, along the extension direction of the screw 3, one end of the insulation sleeve 43 abuts against the first insulation pad 41, and the other end abuts against the second insulation pad 42, so that no gap will appear between the insulation sleeve 43 and the first insulation pad 41 and between the insulation sleeve 43 and the second insulation pad 42, forming a seal and further improving the insulation effect.

[0042] Continue to refer to Figures 1-6 The brake disc 2 includes a first disc body 21 and a second disc body 22 which are arranged in parallel and at intervals. The first disc body 21 and the second disc body 22 are connected by a column assembly 5, so that the two friction elements on the disc brake rub against the first disc body 21 and the second disc body 22 respectively to generate braking force. The first disc body 21 and the second disc body 22 are connected by the column assembly 5, so that the first disc body 21 and the second disc body 22 are not arranged as a whole, which is conducive to heat dissipation.

[0043] Continue to refer to Figures 1-6 Along the radial direction of the brake disc 2, the column assembly 5 includes an inner column group 51, a middle column group 52 and an outer column group 53 arranged in sequence from the inside to the outside. The inner column group 51 includes a plurality of inner columns 511 arranged at intervals along the circumferential direction of the brake disc 2, the middle column group 52 includes a plurality of middle columns 521 arranged at intervals along the circumferential direction of the brake disc 2, and the outer column group 53 includes a plurality of outer columns 531 arranged at intervals along the circumferential direction of the brake disc 2. Among them, there is a gap between any inner column 511 and any middle column 521, and there is a gap between any middle column 521 and any outer column 531, so that a ventilation duct 54 is formed between each inner column 511, the middle column 521 and the outer column 531. Air can circulate in the ventilation duct 54 and exchange heat with the first disk body 21, the second disk body 22, each inner column 511, the middle column 521 and the outer column 531 to achieve rapid heat dissipation.

[0044] Optionally, the inner pillars 511 in the inner pillar group 51 are spaced the same, the middle pillars 521 in the middle pillar group 52 are spaced the same, and the outer pillars 531 in the outer pillar group 53 are spaced the same, so that the inner pillars 511, middle pillars 521, and outer pillars 531 are evenly distributed, achieving a balanced heat dissipation effect at all parts of the brake disc 2. Furthermore, the inner pillars 511, middle pillars 521, and outer pillars 531 are distributed axially symmetrically.

[0045] Of the inner pillars 511, middle pillars 521, and outer pillars 531, the inner pillars 511 and outer pillars 531 are located at the edges, while the middle pillar 521 is located in the middle. Therefore, to ensure that the structural strength of the edge of the brake disc 2 meets requirements, the cross-sectional areas of the inner pillars 511 and outer pillars 531 are both larger than the cross-sectional area of the middle pillars 521. Furthermore, because the inner pillar assembly 51 requires connecting holes 203 for mounting screws 3, the cross-sectional area of the inner pillars 511 can be larger. In this embodiment, the cross-sectional area of the inner pillars 511 is larger than that of the outer pillars 531.

[0046] Optionally, there are multiple middle column groups 52, and the multiple middle column groups 52 are arranged in sequence from the inside to the outside. In this embodiment, the number of middle columns 521 included in the multiple middle column groups 52 is the same. Since the circumference of the circle where the middle column group 52 located on the outside is greater than the circumference of the circle where the middle column group 52 located on the inside is, in order to adapt to the above characteristics, the cross-sectional area of the middle column 521 of the middle column group 52 located on the outside is greater than the cross-sectional area of the middle column 521 of the middle column group 52 located on the inside.

[0047] Optionally, the number of middle columns 521 included in the middle column group 52 is the same as the number of outer columns 531 included in the outer column group 53, so that the flow path of air in the ventilation duct 54 is wavy and the gas flow resistance is small.

[0048] Continue to refer to Figures 1-6 In order to further ensure the structural strength of the outer side of the brake disc 2, the cross section of the outer column 531 is in the shape of a racetrack. Optionally, the inner column 511 and the middle column 521 are both in the shape of a cylinder.

[0049] Continue to refer to Figures 1-6The brake disc 2 includes a first disc body 21 and a second disc body 22 which are arranged in parallel and at intervals. The first disc body 21 is provided with a first groove 211, and the second disc body 22 is provided with a second groove 221. The bottom wall of the first groove 211 is the first connecting surface 201, and the bottom wall of the second groove 221 is the second connecting surface 202. Such arrangement allows the first thermal insulation pad 41 and part of the wheel hub assembly 1 to extend into the first groove 211, and the first groove 211 provides certain positioning and protection for the first thermal insulation pad 41, and allows the second thermal insulation pad 42 and part of the head 31 to extend into the second groove 221, and the second groove 221 provides certain positioning and protection for the second thermal insulation pad 42. Optionally, the wheel hub assembly 1 is spaced apart from the side wall of the first groove 211 to prevent heat from being directly conducted from the side wall of the first groove 211 to the wheel hub assembly 1; the head 31 is spaced apart from the side wall of the second groove 221 to prevent heat from being directly conducted from the side wall of the second groove 221 to the head 31.

[0050] This embodiment also provides a vehicle, comprising the aforementioned brake disc assembly and a wheel hub assembly 1. The first connection surface 201 of the brake disc 2 is located on a side proximal to the wheel hub assembly 1, and a first thermal insulation pad 41 is disposed between the first connection surface 201 and the wheel hub assembly 1. The shank 32 of the screw 3 passes through the brake disc 2 and is threadedly connected to the wheel hub assembly 1. This brake disc assembly can prevent heat from the brake disc 2 from being transferred to the wheel hub assembly 1, the head 31, and the shank 32, thereby preventing overheating of the wheel hub assembly 1 and the screw 3 connected thereto. The brake disc connection portion 12 has an end surface 101, which mates with the first connection surface 201. The first thermal insulation pad 41 is disposed between the end surface 101 and the first connection surface 201.

[0051] The brake disc 2 has a central through hole 204, and the wheel hub assembly 1 includes a hub body 11 and a brake disc connecting portion 12 arranged on the outer periphery of the hub body 11. The rod portion 32 passes through the brake disc 2 and is threadedly connected to the brake disc connecting portion 12. The hub body 11 passes through the central through hole 204, and the outer periphery of the hub body 11 and the hole wall of the central through hole 204 are spaced apart to prevent heat from being directly conducted from the hole wall of the central through hole 204 to the hub body 11. In addition, the gap between the outer periphery of the hub body 11 and the hole wall of the central through hole 204 is connected to the ventilation duct 54 to facilitate air circulation.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A brake disc assembly, used to connect to a wheel hub assembly (1); characterized in that: include: A brake disc (2) having a first connecting surface (201) and a second connecting surface (202) that are opposite and spaced apart, wherein the first connecting surface (201) is located on a side close to the wheel hub assembly (1), and a first thermal insulation pad (41) is provided between the first connecting surface (201) and the wheel hub assembly (1); A screw (3) has a head (31) and a rod (32), wherein the rod (32) passes through the brake disc (2) and can be threadedly connected to the wheel hub assembly (1), the rod (32) and the brake disc (2) are spaced apart, and a second thermal insulation pad (42) is provided between the head (31) and the second connecting surface (202).

2. The brake disc assembly according to claim 1, characterized in that: A heat insulation sleeve (43) is provided between the rod portion (32) and the brake disc (2).

3. The brake disc assembly according to claim 2, characterized in that: Along the extending direction of the screw (3), one end of the heat-insulating sleeve (43) abuts against the first heat-insulating pad (41), and the other end abuts against the second heat-insulating pad (42).

4. The brake disc assembly according to claim 1, characterized in that: The brake disc (2) comprises a first disc body (21) and a second disc body (22) which are arranged in parallel and at intervals, and the first disc body (21) and the second disc body (22) are connected via a column assembly (5).

5. The brake disc assembly according to claim 4, characterized in that: Along the radial direction of the brake disc (2), the column assembly (5) includes an inner column group (51), a middle column group (52), and an outer column group (53) arranged in sequence from the inside to the outside, the inner column group (51) includes a plurality of inner columns (511) arranged at intervals along the circumferential direction of the brake disc (2), the middle column group (52) includes a plurality of middle columns (521) arranged at intervals along the circumferential direction of the brake disc (2), and the outer column group (53) includes a plurality of outer columns (531) arranged at intervals along the circumferential direction of the brake disc (2).

6. The brake disc assembly according to claim 5, characterized in that: The cross-sectional area of the inner column (511) and the cross-sectional area of the outer column (531) are both greater than the cross-sectional area of the middle column (521).

7. The brake disc assembly according to claim 5, characterized in that: The cross section of the outer column (531) is in the shape of a racetrack.

8. The brake disc assembly according to claim 1, characterized in that: The brake disc (2) comprises a first disc body (21) and a second disc body (22) which are arranged in parallel and at intervals, the first disc body (21) is provided with a first groove (211), the second disc body (22) is provided with a second groove (221), the bottom wall of the first groove (211) is the first connecting surface (201), and the bottom wall of the second groove (221) is the second connecting surface (202).

9. A vehicle, characterized in that It comprises a brake disc assembly as described in any one of claims 1 to 8, and also comprises a wheel hub assembly (1), the first connecting surface (201) of the brake disc (2) is located on a side close to the wheel hub assembly (1), and a first thermal insulation pad (41) is provided between the first connecting surface (201) and the wheel hub assembly (1), and the rod portion (32) of the screw (3) passes through the brake disc (2) and is threadedly connected to the wheel hub assembly (1).

10. The vehicle according to claim 9, characterized in that The brake disc (2) has a central through hole (204), the wheel hub assembly (1) includes a wheel hub body (11) and a brake disc connecting portion (12) arranged on the outer periphery of the wheel hub body (11), the rod portion (32) passes through the brake disc (2) and is threadedly connected to the brake disc connecting portion (12), the wheel hub body (11) passes through the central through hole (204), and the outer periphery of the wheel hub body (11) is spaced apart from the hole wall of the central through hole (204).

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