Brake disc, brake system and vehicle

Abstract

The utility model provides a brake disc, a brake system and a vehicle. The brake disc comprises a disc body and a friction assembly. The friction assembly at least covers part of the disc face of the disc body. The material density of the disc body is smaller than that of the friction assembly. According to the brake disc, the friction assembly with the large material density makes contact with the friction plate, so that the hub connected to the disc body is braked, the material density of the disc body is small, the weight of the brake disc is reduced, and the light weight effect of the brake disc is achieved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of vehicle braking, and more specifically to a brake disc, a brake system and a vehicle. Background Art

[0002] The brake disc is one of the important parts in the automobile braking system. When the car is running, the brake disc is connected to the wheel hub and rotates synchronously. At this time, there is a gap between the friction plate and the brake disc to prevent the friction plate and the brake disc from contacting and generating braking torque. When the car brakes, the friction plate fits the brake disc, and the contact surface generates a large friction force, which hinders the car from decelerating. Therefore, the performance of the brake disc directly affects the safety of the car.

[0003] Existing cast iron ventilated brake discs are inexpensive, easy to manufacture and are currently widely used in front / rear brakes. However, due to the large mass of the cast iron brake discs, the fuel consumption of the vehicle also increases, which has an adverse effect on the vehicle's power and fuel economy. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the utility model provides a brake disc in a first aspect, the brake disc comprising:

[0006] Plate body;

[0007] A friction assembly, wherein the friction assembly at least covers a portion of the disk surface of the disk body;

[0008] Wherein, the material density of the disc body is less than the material density of the friction component.

[0009] The brake disc according to the first aspect of the utility model brakes the wheel hub connected to the disc body by contacting the friction plate through the friction component with a larger material density, while the material density of the disc body is smaller, thereby reducing the weight of the brake disc, thereby achieving the effect of lightweighting the brake disc.

[0010] Optionally, the disc body is provided with a ventilation passage, and the friction assembly at least partially extends into the ventilation passage.

[0011] Optionally, the friction assembly comprises:

[0012] an outer friction layer, the outer friction layer being adhered to and fixed to the disk surface; and

[0013] An inner friction layer is adhered to and fixed to the inner surface of the ventilation duct.

[0014] Optionally, the outer friction layer is arranged around the disc body along the circumferential direction of the disc body, and the inner friction layer is arranged at intervals around the axis of the disc body along the circumferential direction of the disc body.

[0015] Optionally, the friction assembly further comprises ribs, wherein the ribs are connected to the outer friction layer, and the ribs are connected to the inner friction layer.

[0016] Optionally, the disk surface is provided with a connection port, the connection port is communicated with the ventilation duct, and the connection port is used to accommodate the rib.

[0017] Optionally, the disk body is provided with a plurality of the ventilation ducts and a plurality of the connection ports, and the plurality of the ventilation ducts are respectively provided in one-to-one correspondence with the plurality of the connection ports.

[0018] Optionally, the friction assembly includes an outer friction layer, a plurality of ribs and a plurality of inner friction layers, the plurality of ribs are arranged in a one-to-one correspondence with the plurality of inner friction layers, the plurality of ribs are all connected to the outer friction layer, and the plurality of inner friction layers are arranged in a one-to-one correspondence with the plurality of ventilation ducts.

[0019] Optionally, the outer friction layer, the inner friction layer and the ribs are integrally formed.

[0020] Optionally, two groups of the friction components are included, and the two groups of the friction components are spaced apart along the axial direction of the disc body and symmetrically distributed on the two disc surfaces of the disc body.

[0021] Optionally, the friction component is connected to the disc body by casting, or the friction component is connected to the disc body by pressing.

[0022] Optionally, the ventilation passage extends in a radial direction of the disk body and communicates with a side wall of the disk body.

[0023] Optionally, the friction component is made of cast iron; and / or

[0024] The disc body is made of at least one of aluminum alloy material, aluminum alloy ceramic material and carbon fiber ceramic material.

[0025] Optionally, the thickness of the outer friction layer and / or the inner friction layer is at least 1 mm.

[0026] Optionally, the number of the ribs is twice the number of the ventilation channels.

[0027] Optionally, the volume of the friction assembly is not greater than the volume of the disc body.

[0028] A second aspect of the utility model provides a braking system, comprising:

[0029] A brake disc according to above; and

[0030] Friction plates are arranged on both sides of the disc body.

[0031] According to the brake system of the second aspect of the utility model, a lightweight brake disc is adopted to reduce the weight of the brake system.

[0032] A third aspect of the utility model provides a vehicle, comprising the braking system according to the above.

[0033] The vehicle according to the third aspect of the utility model adopts a brake disc with low weight, which is conducive to lightweighting of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0035] Figure 1 A schematic diagram of a brake disc according to a preferred embodiment of the present invention;

[0036] Figure 2 for Figure 1 A three-dimensional schematic diagram of the disk in FIG. 1 ; and

[0037] Figure 3 for Figure 1 A three-dimensional schematic diagram of the friction component in FIG.

[0038] Description of Reference Numerals

[0039] 100: disk body 101: disk surface

[0040] 102: Ventilation duct 103: Connection port

[0041] 104: Connecting part 105: Bolt hole

[0042] 110: Friction component 111: External friction layer

[0043] 112: Inner friction layer 113: Ribs

[0044] D1: thickness direction D2: circumferential direction

[0045] D3: Radial direction DETAILED DESCRIPTION

[0046] In the following description, a large number of specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0047] In this document, ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0048] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0049] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0050] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0051] Figures 1 to 3 A brake disc according to the present invention is shown, and the brake disc comprises a disc body 100 and a friction assembly 110. The friction assembly 110 at least covers a portion of a disc surface 101 of the disc body 100.

[0052] The material density of the disc body 100 is less than the material density of the friction component 110 .

[0053] According to the brake disc of the present invention, the friction assembly 110 with a larger material density contacts the friction plate, thereby braking the wheel hub connected to the disc body 100, while the material density of the disc body 100 is smaller, thereby reducing the weight of the brake disc, thereby achieving the effect of lightweighting the brake disc.

[0054] Optionally, the volume of the friction assembly 110 is not greater than the volume of the disc body 100 , thereby further reducing the weight of the brake disc.

[0055] Reference Figure 1 and Figure 2A connecting portion 104 is provided at the center of the disk body 100, and the connecting portion 104 protrudes from the disk surface 101 of the disk body 100 along the thickness direction D1. The connecting portion 104 has a bolt hole 105, and the connecting portion 104 is fixed to the wheel hub through the bolt hole 105, so that the disk body 100 is fixed to the wheel hub.

[0056] Reference Figure 1 and Figure 2 The disc body 100 is provided with a ventilation duct 102, and the friction assembly 110 at least partially extends into the ventilation duct 102, so that the friction assembly 110 is connected to both the inner and outer sides of the disc body 100, so that the disc body 100 is wrapped in the friction assembly 110, so that the friction assembly 110 is tightly connected to the disc body 100 and is not easy to loosen.

[0057] Reference Figure 3 The friction assembly 110 includes an outer friction layer 111 and an inner friction layer 112, combined with Figure 1 and Figure 2 As shown, the outer friction layer 111 is attached to the disk surface 101 and fixed to the disk surface 101. The inner friction layer 112 is attached to the inner surface of the ventilation duct 102 and fixed to the inner surface of the ventilation duct 102. In detail, the inner friction layer 112 is arranged on the two inner surfaces of the ventilation duct 102 perpendicular to the thickness direction D1 of the disk body 100. The inner friction layer 112 covers the inner surface of the ventilation duct 102 perpendicular to the thickness direction D1, so the shape of the inner friction layer 112 is adjusted according to the shape of the inner surface of the ventilation duct 102 perpendicular to the thickness direction D1. For example, the ventilation duct 102 extends along the radial direction D3 of the disk body 100 and is connected to the side wall of the disk body 100, and the inner surface of the ventilation duct 102 perpendicular to the thickness direction D1 is fan-shaped, then the shape of the inner friction layer 112 is fan-shaped. The outer friction layer 111 is annular and arranged around the axis of the disk body 100.

[0058] Reference Figure 2 and Figure 3 The disk surface 101 is provided with a connection port 103, and the connection port 103 is connected to the ventilation duct 102. The friction assembly 110 also includes a rib 113, which is connected to the outer friction layer 111. The rib 113 is accommodated in the connection port 103 and connected to the inner friction layer 112 through the connection port 103. The arrangement of the connection port 103 and the rib 113 is conducive to strengthening the limitation of the outer friction layer 111 along the circumferential direction D2 of the disk body 100, so that the outer friction layer 111 is not easily separated from the disk body 100.

[0059] Reference Figure 2 The disk body 100 is provided with a plurality of ventilation channels 102 and a plurality of connection ports 103. The plurality of ventilation channels 102 are evenly distributed around the axis of the disk body 100, and the plurality of ventilation channels 102 and the plurality of connection ports 103 are arranged one by one. Figure 3The friction assembly 110 includes an outer friction layer 111, a plurality of ribs 113 and a plurality of inner friction layers 112. The plurality of ribs 113 are arranged in one-to-one correspondence with the plurality of inner friction layers 112. The plurality of ribs 113 are all connected to the outer friction layer 111. The plurality of inner friction layers 112 are arranged in one-to-one correspondence with the plurality of ventilation ducts 102 and are arranged at intervals around the axis of the disk body 100 along the circumferential direction D2 of the disk body 100, which not only enhances the heat dissipation performance of the disk body 100, but also further enhances the connection strength between the friction assembly 110 and the disk body 100.

[0060] Optionally, the outer friction layer 111, the inner friction layer 112 and the ribs 113 are integrally formed. Specifically, the friction assembly 110 and the disc body 100 are formed by two materials entering a mold and blending and connecting. The disc body 100 can be made of aluminum alloy, aluminum alloy ceramic or carbon fiber ceramic material, and the friction assembly 110 can be made of cast iron material, such as cast iron HT250, HT150, HT200, etc.

[0061] As an alternative, the friction assembly 110 may also be connected to the disk body 100 by high-pressure pressing.

[0062] Optionally, the thickness of the outer friction layer 111 is at least 1 mm, so that the friction component 110 has good wear resistance. The thickness of the inner friction layer 112 can also be at least 1 mm, ensuring the connection strength between the friction component 110 and the disc body 100.

[0063] Overall, referring to Figures 1 to 3 According to the utility model, the brake disc includes two groups of friction components 110, which are spaced apart along the axial direction of the disc body 100 (i.e., the radial direction D1) and symmetrically distributed on the two disc surfaces 101 of the disc body 100, corresponding to the friction plates in the existing braking system (two friction plates are clamped to the two disc surfaces 101 of the brake disc), thereby ensuring the wear resistance and braking performance of the brake disc.

[0064] Optionally, refer to Figure 2 and Figure 3 The number of ribs 113 is twice the number of ventilation channels 102, so that the two groups of outer friction layers 111 and inner friction layers 112 on both sides of the disc body 100 are independently connected, the connection structure is stable, and it is easy to manufacture and process.

[0065] The utility model also provides a brake system, comprising the brake disc and friction plates according to the above, wherein the friction plates are arranged on both sides of the disc body 100. According to the brake system of the utility model, a lightweight brake disc is used to reduce the weight of the brake system.

[0066] Generally speaking, the braking system also includes a caliper (not shown in the figure), which is driven by hydraulic pressure. Two friction plates are respectively arranged on the two inner walls of the caliper. When the caliper is started, the two friction plates are clamped to the two outer friction layers 111 of the brake disc, thereby braking the disc body 100 and the wheel hub.

[0067] The utility model also provides a vehicle, comprising the above-mentioned brake system. According to the third aspect of the utility model, the vehicle adopts a brake disc with low weight, thereby facilitating the weight reduction of the whole vehicle.

[0068] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" and the like appearing in this article may indicate that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0069] The utility model has been described through the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of the protection claimed by the utility model.

Claims

1. A brake disc, characterized in that: The brake disc comprises: Plate body; A friction assembly, wherein the friction assembly at least covers a portion of the disk surface of the disk body; Wherein, the material density of the disc body is less than the material density of the friction component.

2. The brake disc according to claim 1, characterized in that The disc body is provided with a ventilation passage, and the friction assembly at least partially extends into the ventilation passage.

3. The brake disc according to claim 2, characterized in that The friction assembly comprises: an outer friction layer, the outer friction layer being adhered to and fixed to the disk surface; and An inner friction layer is adhered to and fixed to the inner surface of the ventilation duct.

4. The brake disc according to claim 3, characterized in that The outer friction layer is arranged around the disc body along the circumferential direction of the disc body, and the inner friction layer is arranged at intervals around the axis of the disc body along the circumferential direction of the disc body.

5. The brake disc according to claim 3, characterized in that The friction assembly further includes ribs connected to the outer friction layer and the ribs connected to the inner friction layer.

6. The brake disc according to claim 5, characterized in that The disk surface is provided with a connection port, the connection port is communicated with the ventilation duct, and the connection port is used to accommodate the rib.

7. The brake disc according to claim 6, characterized in that The disk body is provided with a plurality of the ventilation passages and a plurality of the connection ports, and the plurality of the ventilation passages are respectively provided in one-to-one correspondence with the plurality of the connection ports.

8. The brake disc according to claim 5, characterized in that The friction assembly includes an outer friction layer, a plurality of ribs and a plurality of inner friction layers, the plurality of ribs are arranged in a one-to-one correspondence with the plurality of inner friction layers, the plurality of ribs are all connected to the outer friction layer, and the plurality of inner friction layers are arranged in a one-to-one correspondence with the plurality of ventilation ducts.

9. The brake disc according to claim 5, characterized in that The outer friction layer, the inner friction layer and the ribs are integrally formed.

10. The brake disc according to claim 2, characterized in that The invention comprises two groups of friction components, which are spaced apart in the axial direction of the disc body and symmetrically distributed on the two disc surfaces of the disc body.

11. The brake disc according to claim 1, characterized in that The friction component is connected to the disc body by casting, or the friction component is connected to the disc body by pressing.

12. The brake disc according to claim 2, characterized in that The ventilation passage extends in a radial direction of the disk body and communicates with a side wall of the disk body.

13. The brake disc according to claim 1, characterized in that The friction component is made of cast iron; and / or The disc body is made of at least one of aluminum alloy material, aluminum alloy ceramic material and carbon fiber ceramic material.

14. The brake disc according to claim 3, characterized in that The thickness of the outer friction layer and / or the inner friction layer is at least 1 mm.

15. The brake disc according to claim 5, characterized in that The number of the ribs is twice the number of the ventilation channels.

16. The brake disc according to any one of claims 1 to 15, characterized in that The volume of the friction component is not greater than the volume of the disc body.

17. A braking system, characterized in that: include: A brake disc according to any one of claims 1 to 16; as well as Friction plates are arranged on both sides of the disc body.

18. A vehicle, characterized in that: Comprising a braking system according to claim 17.

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