Brake disc dust cover, brake assembly and vehicle

Abstract

The present disclosure relates to a brake disc dust cover, a brake assembly and a vehicle. The brake disc dust cover comprises a main body, the main body is used to be connected to the brake disc, a gap is provided between the main body and the brake disc; a flange is formed on the main body, the flange is used to guide the wind, and the flange is configured to guide the heat dissipation wind blowing toward the flange and the brake disc to between the main body and the brake disc, and to the inside of the ventilation ribs of the brake disc. The brake disc dust cover can guide the wind by means of the flange on the main body, so that the heat dissipation wind blowing toward the brake disc can be guided by the flange, and can avoid being blocked by the main body, thereby not affecting the heat dissipation of the brake disc. The flange can guide the heat dissipation wind blowing toward the flange and the brake disc to two places, thereby improving the heat dissipation effect of the brake disc and ensuring the braking performance.

Description

Technical Field

[0001] The present disclosure relates to the technical field of brake cooling, and in particular to a brake disc dust cover, a brake assembly and a vehicle. Background Art

[0002] In the related art, the dust cover will cover the brake disc as much as possible to prevent stones from hitting the brake disc, causing scratches on the surface of the brake disc and cracks on the brake disc. However, the dust cover will block the cooling air blowing to the brake disc, which will affect the heat dissipation of the brake disc and affect the braking performance. Summary of the invention

[0003] The purpose of the present disclosure is to provide a brake disc dust cover, a brake assembly and a vehicle to solve the above-mentioned problems in the related art.

[0004] In order to achieve the above object, one aspect of the present disclosure provides a brake disc dust cover, comprising:

[0005] A body, used to be connected to a brake disc, with a gap being provided between the body and the brake disc;

[0006] Among them, a flange is formed on the main body, and the flange is used to guide wind. The flange is configured to guide the heat dissipation wind blowing toward the flange and the brake disc to between the main body and the brake disc, and to the inside of the ventilation ribs of the brake disc.

[0007] Optionally, the flange includes a first flange and a second flange, both of which extend along the axial direction of the body, the first flange is configured to guide the heat dissipation air to between the body and the brake disc, and the second flange is configured to guide the heat dissipation air to the inside of the ventilation ribs of the brake disc.

[0008] Optionally, the main body is constructed as a disc-shaped structure, an assembly hole is opened at the axis of the main body, the main body has an inner edge wall close to the axis and an outer edge wall away from the axis, the first flange is formed on the outer edge wall of the main body, and the second flange is formed on the inner edge wall of the main body.

[0009] Optionally, the second flange is used to guide the heat dissipation wind between the body and the brake disc to the inside of the ventilation ribs of the brake disc.

[0010] Optionally, the first flange and the second flange extend in directions away from each other, the first flange extends in a direction away from the brake disc and toward a direction in which the cooling air blows, and the second flange extends toward the brake disc.

[0011] Optionally, the first flange is inclined at an angle to the brake disc, the angle between the first flange and the brake disc is set to a first angle, the angle between the flow direction of the heat dissipation air blowing toward the brake disc and the brake disc is set to a second angle, and the angle of the first angle is equal to the angle of the second angle.

[0012] Optionally, a virtual extension line is provided along the first flange in a direction away from the brake disc, and the cooling air is blown toward the brake disc through a cooling air duct. The cooling air duct is farther away from the axis of the brake disc than the first flange, and a tangent is provided at one end of the cooling air duct at the air outlet close to the axis of the brake disc, and the vertical straight-line distance between the virtual extension line and the tangent is set to 5mm-10mm.

[0013] Optionally, the connection between the first flange and the body is configured as a first arc-shaped transition, and a chamfer radius of the first arc-shaped transition is greater than 20 mm.

[0014] Optionally, in the axial direction of the brake disc, one end of the second flange away from the body extends toward the inner disc wall of the brake disc and a gap is provided between the second flange and the inner disc wall of the brake disc;

[0015] Wherein, in the axial direction of the brake disc, the width of the gap is less than 10 mm.

[0016] Optionally, the connection between the second flange and the body is configured as a second arc-shaped transition, and the chamfer radius of the second arc-shaped transition is greater than 10 mm.

[0017] Optionally, in the radial direction of the brake disc, a flow space for heat dissipation wind to flow is provided between the second flange and the inner annular wall of the brake disc;

[0018] Wherein, in the radial direction of the brake disc, the width of the flow space is set to 10-20 mm.

[0019] A second aspect of the present disclosure further provides a brake assembly, including a brake disc, a heat dissipation duct, and the brake disc dust cover mentioned above;

[0020] The main body of the brake disc dust cover is connected to the brake disc, and the air outlet of the heat dissipation air duct faces the flange of the brake disc dust cover and the brake disc.

[0021] A third aspect of the present disclosure also provides a vehicle, comprising the above-mentioned brake assembly.

[0022] The above technical scheme can achieve wind guidance through the flange on the main body, so that the heat dissipation wind blowing to the brake disc can be guided by the flange, and can avoid being blocked by the main body, thereby not affecting the heat dissipation of the brake disc. The flange can guide the heat dissipation wind blowing to the flange and the brake disc to two places. One is between the main body and the brake disc. A gap is set between the main body and the brake disc to allow air to flow through, which greatly improves the convection heat transfer coefficient on the surface of the brake disc, realizes the heat dissipation of the brake disc, and can effectively take away the heat on the brake disc. The other is the inside of the ventilation ribs of the brake disc, which can effectively achieve the heat dissipation inside the ventilation ribs of the brake disc, improve the heat dissipation effect of the brake disc, and ensure the braking performance.

[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 It is a three-dimensional schematic diagram of a brake disc dust cover according to an embodiment of the present invention.

[0026] Figure 2 It is a three-dimensional schematic diagram of the use state of the brake disc dust cover according to an embodiment of the present invention.

[0027] Figure 3 It is a structural schematic diagram of a brake disc dust cover in one embodiment of the present invention from one perspective of the usage state.

[0028] Figure 4 It is a structural schematic diagram of a brake disc dust cover connected to a brake disc according to an embodiment of the present invention.

[0029] Figure 5 This is an embodiment of the present disclosure Figure 4 Sectional view of the AA surface.

[0030] Description of Reference Numerals

[0031] 1. body, 11. assembly hole;

[0032] 2. Flanging, 21. First flanging, 22. Second flanging, 23. First angle, 24. Second angle, 25. Virtual extension line, 26. First arc transition, 27. Second arc transition, 28. Gap, 29. Flow space;

[0033] 3. Brake disc;

[0034] 4. Cooling duct, 41. Tangent. DETAILED DESCRIPTION

[0035] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0036] In the present disclosure, unless otherwise stated, directional words such as "upper, middle, and lower" are generally defined by the direction of the drawing plane of the accompanying drawings, and "inner" and "outer" refer to the inside and outside of the relevant parts. In addition, the terms "first", "second", etc. are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0038] Braking is an important property of a vehicle. If the temperature of the brake disc or friction pad is too high, it will have a great impact on the braking performance, resulting in thermal decay, which will greatly increase the braking distance of the vehicle or even cause a complete loss of braking force, seriously affecting driving safety. Therefore, it is of great significance to improve the brake heat dissipation capacity of the vehicle's brake disc.

[0039] Most of the current family cars use the rotation of the brake disc to remove the heat from the brake disc, thereby reducing the temperature of the brake disc; in some models, additional brake air ducts are arranged to actively dissipate heat and cool the brake disc. The inlet of the air duct is usually in the front fender area, and the outlet is arranged in the wheel cavity area of ​​the vehicle. The airflow enters from the front fender inlet, flows out from the wheel cover outlet, blows towards the brake disc, removes the high-temperature gas on the surface of the brake disc, and at the same time increases the convective heat transfer coefficient of the brake disc, which is to characterize the heat dissipation capacity of the brake disc and improve the heat dissipation capacity of the brake system.

[0040] A dust cover is arranged between the vehicle brake disc and the suspension steering knuckle. Its main function is to prevent stones from hitting the brake disc, causing scratches on the surface of the brake disc and cracks in the brake disc. It also plays a heat-insulating role to prevent the high-temperature radiation of the brake disc from damaging the surrounding rubber and electronic components.

[0041] In the related art, the dust cover will partially avoid the surrounding parts while covering the brake disc as much as possible to prevent stones from hitting the brake disc and causing scratches on the surface of the brake disc and cracks in the brake disc. However, the dust cover will block the cooling air blowing to the brake disc, resulting in the air blown out of the brake air duct not being able to blow directly to the brake disc, which will affect the heat dissipation of the brake disc and the braking performance. Some dust covers are set with local openings for air to pass through, but the diversion effect is limited. After the airflow blows to the brake disc, it disperses and is not reused.

[0042] For this reason, Figure 1-Figure 5 As shown, one aspect of the present disclosure provides a brake disc dust cover, comprising a body 1 .

[0043] The body 1 is used to be connected to the brake disc 3 , and a gap is provided between the body 1 and the brake disc 3 .

[0044] Among them, a flange 2 is formed on the main body 1, and the flange 2 is used to guide the wind. The flange 2 is configured to guide the heat dissipation wind blowing toward the flange 2 and the brake disc 3 to between the main body 1 and the brake disc 3, and to the inside of the ventilation ribs of the brake disc 3.

[0045] The body 1 is located on the inner side of the brake disc 3. It should be noted that the inner side of the brake disc 3 refers to the side facing the vehicle body. The flange 2 can guide the wind. It can be understood that the heat dissipation wind blowing toward the flange 2 and the brake disc 3 can be guided under the action of the flange 2, thereby guiding it to the designated position.

[0046] In the above technical scheme, wind guidance can be achieved through the flange 2 on the main body 1, so that the heat dissipation wind blown to the brake disc 3 can be guided by the flange 2, and can avoid being blocked by the main body 1, thereby not affecting the heat dissipation of the brake disc 3. The flange 2 can guide the heat dissipation wind blown to the flange 2 and the brake disc 3 to two places. One is between the main body 1 and the brake disc 3. A gap is set between the main body 1 and the brake disc 3 to allow air to flow through, which greatly improves the convection heat transfer coefficient on the surface of the brake disc 3, realizes the heat dissipation of the brake disc 3, and can effectively take away the heat on the brake disc 3. The other is the inside of the ventilation ribs of the brake disc 3, which can effectively realize the heat dissipation of the ventilation ribs of the brake disc 3, improve the heat dissipation effect of the brake disc 3, and ensure the braking performance.

[0047] Optionally, in one embodiment of the present disclosure, the flange 2 includes a first flange 21 and a second flange 22, both of which extend along the axis of the body 1, the first flange 21 is configured to guide the heat dissipation wind between the body 1 and the brake disc 3, and the second flange 22 is configured to guide the heat dissipation wind to the inside of the ventilation ribs of the brake disc 3. By such a configuration, two wind guides can be achieved respectively, so that the heat dissipation wind can be better guided between the body 1 and the brake disc 3 and to the inside of the ventilation ribs of the brake disc 3.

[0048] Among them, the main body 1 of the dust cover is coaxially arranged with the brake disc 3, and the first flange 21 and the second flange 22 extend in the axial direction of the main body 1, which can facilitate the first flange 21 and the second flange 22 to contact with the heat dissipation wind to achieve diversion, and the first flange 21 and the second flange 22 respectively divert the heat dissipation wind, which can facilitate the heat dissipation wind to be diverted between the main body 1 and the brake disc 3 and inside the ventilation ribs of the brake disc 3, respectively, and can better achieve the heat dissipation of the brake disc 3.

[0049] In some examples, the first flange 21 and the second flange 22 are integrally formed with the body 1 and are formed by directly bending the body 1. In other examples, the first flange 21 and the second flange 22 can be welded to the body 1.

[0050] In order to better guide the heat dissipation wind to between the body 1 and the brake disc 3 and inside the ventilation ribs of the brake disc 3. Optionally, in one embodiment of the present disclosure, the body 1 is constructed as a disc-shaped structure, the axis of the body 1 is provided with an assembly hole 11, the body 1 has an inner wall close to the axis and an outer wall away from the axis, the first flange 21 is formed on the outer wall of the body 1, and the second flange 22 is formed on the inner wall of the body 1.

[0051] The first flange 21 is located on the outer wall of the body 1, so that the heat dissipation wind blowing toward the body 1 and the brake disc 3 can be directly guided into between the body 1 and the brake disc 3 under the action of the first flange 21. The second flange 22 is located on the inner wall of the body 1, and the inner wall is close to the axis of the body 1, so that the second flange 22 can facilitate the heat dissipation wind to be guided to the inside of the ventilation ribs of the brake disc 3.

[0052] In some examples, the first flange 21 is formed by bending the outer wall of the body 1 , and the second flange 22 is formed by bending the inner wall of the body 1 .

[0053] Optionally, in another embodiment of the present disclosure, the flange 2 is a whole, and the flange 2 can directly guide the heat dissipation wind to between the body 1 and the brake disc 3 and inside the ventilation ribs of the brake disc 3. The flange 2 extends directly from the outer wall of the body 1 to the inner wall of the body 1.

[0054] Optionally, in an embodiment of the present disclosure, the second flange 22 is used to guide the heat dissipation wind between the body 1 and the brake disc 3 to the inside of the ventilation ribs of the brake disc 3.

[0055] Among them, the first flange 21 and the second flange 22 can guide the heat dissipation air in a relay form, that is, the first flange 21 first guides the heat dissipation air to between the main body 1 and the brake disc 3, and then the second flange 22 guides the heat dissipation air flowing into between the main body 1 and the brake disc 3 to the inside of the ventilation ribs of the brake disc 3.

[0056] Optionally, in another embodiment of the present disclosure, the first flange 21 and the second flange 22 respectively guide the heat dissipation air blown toward the brake disc 3, that is, the heat dissipation air is divided into two parts, one part is guided between the main body 1 and the brake disc 3, and the other part is directly guided to the inside of the ventilation ribs of the brake disc 3.

[0057] Optionally, in one embodiment of the present disclosure, the first flange 21 and the second flange 22 extend in directions away from each other, the first flange 21 extends in a direction away from the brake disc 3 and toward the direction of the cooling air, and the second flange 22 extends toward the brake disc 3. By such a configuration, the first flange 21 can be used to guide the cooling air blowing toward the brake disc 3 and the body 1, and the second flange 22 extends toward the brake disc 3, which can facilitate the second flange 22 to guide the cooling air between the body 1 and the brake disc 3 to the inside of the ventilation ribs of the brake disc 3.

[0058] It can be understood that the first flange 21 and the second flange 22 are located on both sides of the main body 1 to respectively implement two cooling air diversions.

[0059] Optionally, in another embodiment of the present disclosure, the first flange 21 and the second flange 22 extend in the same direction, and both of the first flange 21 and the second flange 22 extend in a direction away from the brake disc 3. An air guide hole may be provided at the second flange 22, and the second flange 22 guides the heat dissipation air to the air guide hole. The heat dissipation air passes through the air guide hole and enters into the ventilation ribs of the brake disc 3 to achieve heat dissipation.

[0060] In order to further guide the heat dissipation air to between the main body 1 and the brake disc 3, optionally, in one embodiment of the present disclosure, the first flange 21 is inclined at an angle to the brake disc 3, the angle between the first flange 21 and the brake disc 3 is set to a first angle 23, the angle between the flow direction of the heat dissipation air blown to the brake disc 3 and the brake disc 3 is set to a second angle 24, and the angle of the first angle 23 is equal to the angle of the second angle 24.

[0061] The first angle 23 refers to the angle between the plane of the first flange 21 and the plane of the brake disc 3. The flow direction of the heat dissipation wind blowing toward the brake disc 3 can be regarded as a straight line, and the angle between the straight line and the plane where the brake disc 3 is located is the second angle 24. By making the angle of the first angle 23 equal to the angle of the second angle 24, the heat dissipation wind blows directly toward the angle position between the first flange 21 and the brake disc 3, so that the first flange 21 has a guiding effect, and the brake disc 3 can also have a blocking effect, so that the heat dissipation wind blows can collide with the brake disc 3, thereby generating dispersed airflow in multiple directions.

[0062] In some examples, there may be dispersed airflow in four directions, three of which are distributed in the upper, middle and lower directions to enter the gap between the body 1 and the brake disc 3, and the other direction can flow over the brake disc 3 toward the direction of the brake disc 3 away from the vehicle body, and flow out from between the brake disc 3 and the rim, thereby improving the heat dissipation effect on the brake disc 3. The airflow entering the gap between the body 1 and the brake disc 3 flows in three directions: upper, middle and lower. The airflow flowing in the upper and lower directions can improve the heat dissipation capacity of the upper and lower areas of the brake disc 3 covered by the body 1, and the airflow flowing in the middle direction can enter the ventilation ribs of the brake disc 3 under the guidance of the second flange 22, thereby improving the heat dissipation effect of the brake disc 3.

[0063] Optionally, in one embodiment of the present disclosure, a virtual extension line 25 is provided along the first flange 21 in a direction away from the brake disc 3, and the heat dissipation wind is blown toward the brake disc 3 through the heat dissipation duct 4. The heat dissipation duct 4 is farther away from the axis of the brake disc 3 than the first flange 21, and a tangent line 41 is provided at one end of the air outlet of the heat dissipation duct 4 close to the axis of the brake disc 3, and the vertical straight-line distance between the virtual extension line 25 and the tangent line 41 is set to 5mm-10mm. By such a setting, the heat dissipation wind blown out of the air outlet of the heat dissipation duct 4 can flow toward the position of the first angle 23 between the first flange 21 and the brake disc 3, which is more conducive to entering between the body 1 and the brake disc 3.

[0064] The heat dissipation duct 4 is offset from the first flange 21 in the axial direction away from the brake disc 3, so that the heat dissipation air blown out of the air outlet of the heat dissipation duct 4 can be prevented from being blown directly toward the body 1 and blocked by the body 1 of the dust cover. It should be noted that the vertical straight line distance between the virtual extension line 25 and the tangent line 41 is set to 5mm-10mm, which refers to the length of the straight line perpendicular to both the virtual extension line 25 and the tangent line 41. In some examples, the distance can be 5mm.

[0065] Optionally, in one embodiment of the present disclosure, the connection between the first flange 21 and the body 1 is configured as a first arc transition 26, and the chamfer radius of the first arc transition 26 is greater than 20 mm. By such a configuration, the heat dissipation air can enter between the body 1 and the brake disc 3 more smoothly, avoiding the problem of airflow being blocked.

[0066] Optionally, in one embodiment of the present disclosure, in the axial direction of the brake disc 3, the end of the second flange 22 away from the main body 1 extends toward the inner disc wall of the brake disc 3 and a gap 28 is provided between the end and the inner disc wall of the brake disc 3; wherein, in the axial direction of the brake disc 3, the width of the gap 28 is less than 10 mm.

[0067] The second flange 22 can extend as far as possible along the axis direction of the brake disc 3 toward the inner disc wall of the brake disc 3, so that the second flange 22 can guide as much heat dissipation wind as possible to the inside of the ventilation ribs of the brake disc 3, thereby improving the heat dissipation performance of the brake disc 3. By extending the end of the second flange 22 away from the body 1 toward the inner disc wall of the brake disc 3 and providing a gap 28 between the end and the inner disc wall, interference between the second flange 22 and the brake disc 3 can be avoided. The width of the gap 28 can be set according to actual needs, and no excessive restrictions are imposed here.

[0068] It can be understood that the axis of the brake disc 3 has an inner groove, the second flange 22 extends into the inner groove, and the groove bottom of the inner groove can be set as the inner disc wall of the brake disc 3.

[0069] Optionally, in one embodiment of the present disclosure, the connection between the second flange 22 and the body 1 is configured as a second arc transition 27, and the chamfer radius of the second arc transition 27 is greater than 10 mm. By such a configuration, the heat dissipation air can more smoothly enter the ventilation ribs of the brake disc 3, avoiding the problem of airflow being blocked.

[0070] Optionally, in one embodiment of the present disclosure, in the radial direction of the brake disc 3, there is a flow space 29 for the heat dissipation wind to flow between the second flange 22 and the inner ring wall of the brake disc 3. In the radial direction of the brake disc 3, the width of the flow space 29 is set to 10-20 mm. By setting in this way, the second flange 22 can be facilitated to guide the heat dissipation wind, and the heat dissipation wind can be facilitated to enter the ventilation ribs of the brake disc 3. In the radial direction of the brake disc 3, the width of the flow space 29 can be set according to actual needs, and no excessive restrictions are imposed here.

[0071] A second aspect of the present disclosure further provides a brake assembly, including a brake disc 3, a heat dissipation duct 4 and the above-mentioned brake disc dust cover.

[0072] The main body 1 of the brake disc dust cover is connected to the brake disc 3 , and the air outlet of the heat dissipation air duct 4 faces the flange 2 of the brake disc dust cover and the brake disc 3 .

[0073] Among them, the heat dissipation air duct 4 can blow air, and the air is blown out from the air outlet of the heat dissipation air duct 4, and is guided to between the main body 1 and the brake disc 3 and inside the ventilation ribs of the brake disc 3 under the action of the flange 2, so as to realize the heat dissipation of the brake disc 3.

[0074] A third aspect of the present disclosure also provides a vehicle, comprising the above-mentioned brake assembly.

[0075] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0076] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0077] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A brake disc dust cover, characterized in that: include: A body, used to be connected to a brake disc, with a gap being provided between the body and the brake disc; Wherein, a flange is formed on the body, and the flange is used to guide wind. The flange is configured to guide the heat dissipation wind blowing toward the flange and the brake disc to between the body and the brake disc, and to the inside of the ventilation ribs of the brake disc; The flange includes a first flange and a second flange, the first flange and the second flange both extend along the axial direction of the body, the first flange is configured to guide the heat dissipation wind to between the body and the brake disc, and the second flange is configured to guide the heat dissipation wind to the inside of the ventilation ribs of the brake disc; The first flange extends in a direction away from the brake disc and toward the direction in which the heat dissipation wind blows, so as to directly guide the heat dissipation wind blowing toward the body and the brake disc into between the body and the brake disc; the first flange is arranged to be inclined at an angle to the brake disc, and the angle between the first flange and the brake disc is set to a first angle, so that the heat dissipation wind blows toward the angle position between the first flange and the brake disc, thereby generating dispersed airflows in multiple directions; The dispersed airflows in three directions are distributed in the upper, middle and lower directions and enter the gap between the body and the brake disc, and the dispersed airflow in another direction passes over the brake disc and flows out from between the brake disc and the rim.

2. The brake disc dust cover according to claim 1, characterized in that: The main body is constructed as a disc-shaped structure, and an assembly hole is opened at the axis of the main body. The main body has an inner edge wall close to the axis and an outer edge wall away from the axis. The first flange is formed on the outer edge wall of the main body, and the second flange is formed on the inner edge wall of the main body.

3. The brake disc dust cover according to claim 1, characterized in that: The second flange is used to guide the heat dissipation wind between the body and the brake disc to the inside of the ventilation ribs of the brake disc.

4. The brake disc dust cover according to claim 3, characterized in that: The first flange and the second flange extend in directions away from each other, and the second flange extends toward the brake disc.

5. The brake disc dust cover according to claim 4, characterized in that: The angle between the flow direction of the cooling air blowing toward the brake disc and the brake disc is set to a second angle, and the angle of the first angle is equal to the angle of the second angle.

6. The brake disc dust cover according to claim 5, characterized in that: A virtual extension line is provided along the first flange in a direction away from the brake disc, and the cooling air is blown toward the brake disc through a cooling air duct. The cooling air duct is farther away from the axis of the brake disc than the first flange, and a tangent is provided at one end of the cooling air duct at the air outlet close to the axis of the brake disc, and the vertical straight-line distance between the virtual extension line and the tangent is set to 5mm-10mm.

7. The brake disc dust cover according to claim 1, characterized in that: The connection between the first flange and the body is configured as a first arc-shaped transition, and the chamfer radius of the first arc-shaped transition is greater than 20 mm.

8. The brake disc dust cover according to claim 1, characterized in that: In the axial direction of the brake disc, one end of the second flange away from the body extends toward the inner disc wall of the brake disc and a gap is provided between the second flange and the inner disc wall of the brake disc; Wherein, in the axial direction of the brake disc, the width of the gap is less than 10 mm.

9. The brake disc dust cover according to any one of claims 1 to 8, characterized in that: The connection between the second flange and the body is configured as a second arc-shaped transition, and the chamfer radius of the second arc-shaped transition is greater than 10 mm.

10. The brake disc dust cover according to any one of claims 1 to 8, characterized in that: In the radial direction of the brake disc, a flow space for heat dissipation wind to flow is provided between the second flange and the inner annular wall of the brake disc; Wherein, in the radial direction of the brake disc, the width of the flow space is set to 10-20 mm.

11. A brake assembly, characterized in that: It comprises a brake disc, a heat dissipation duct and a brake disc dust cover as claimed in any one of claims 1 to 10; The main body of the brake disc dust cover is connected to the brake disc, and the air outlet of the heat dissipation air duct faces the flange of the brake disc dust cover and the brake disc.

12. A vehicle, characterized in that: Comprising the brake assembly as claimed in claim 11.

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