Composite structure brake disc and vehicle

Abstract

The composite structure brake disc comprises a brake disc body made of metal and a brake pad made of carbon-carbon / carbon-ceramic materials, the brake pad is arranged on the connecting face of the brake disc body, a groove is formed in the edge of the contact face of the connecting face and the brake pad, and a corresponding protruding part is arranged at the contact position of the brake pad and the connecting face. The edge of the brake disc body is further provided with an outer frame abutting against the outer edge of the brake pad. According to the utility model, the groove and the outer frame are arranged to limit the edge of the brake pad, so that the brake pad is prevented from directly flying out after being broken, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to a vehicle brake mechanical component, in particular to a composite structure brake disc and a vehicle. Background Art

[0002] In the automobile braking system, the brake is an important executive component that generates braking force to stop the moving car; according to the type of brake, it can be divided into disc brake and drum brake. The working principle of disc brake is to use the friction between the brake pad and the brake disc to generate braking torque relative to the wheel, converting the kinetic energy consumption of the car into heat energy.

[0003] The main reasons for the failure of brake discs on the market are wear and cracking of the disc surface. Due to frequent braking of the vehicle and large braking energy, the friction surface of the brake pad will gradually wear out. When it reaches a certain limit, the brake disc must be replaced. In addition, when the carbon-carbon / carbon-ceramic brake pad is broken, it will splash under the centrifugal effect, which is easy to cause safety hazards to vehicle equipment.

[0004] Patent application No. CN111503184A discloses a carbon-ceramic brake disc for heavy-duty trucks, comprising: an upper disc body, a flange disc body and a lower disc body; the flange disc body is arranged between the upper disc body and the lower disc body; the upper disc body and the lower disc body are both made of carbon-ceramic composite materials.

[0005] Patent No. CN219452725U discloses a brake disc and a vehicle, wherein the brake disc comprises a disc body and a brake ring; the disc body has two connecting surfaces arranged opposite to each other, each connecting surface is provided with a plurality of mounting holes; the disc body is made of aluminum alloy; there are two brake rings, which are respectively stacked on the two connecting surfaces; a plurality of mounting protrusions are convexly provided on the mounting surface of each brake ring that is in contact with the connecting surface, the number of mounting protrusions on each mounting surface is the same as the number of mounting holes on the corresponding matching connecting surface, the mounting protrusions correspond to the mounting holes one by one and are interference-fitted; the brake ring is made of carbon ceramic. It can solve the problem that the brake disc in the prior art is heavy and not conducive to lightweighting. Summary of the invention

[0006] The utility model aims to solve the existing problems and provide a brake disc with a composite structure and a vehicle.

[0007] In order to achieve the above-mentioned purpose, the composite structure brake disc provided by the utility model includes a metal brake disc body and a brake pad made of carbon-carbon / carbon-ceramic material. The brake pad is arranged on the connecting surface of the brake disc body. A groove is provided at the edge of the contact surface between the connecting surface and the brake pad. A corresponding protrusion is provided at the contact position between the brake pad and the connecting surface. The edge of the brake disc body is also provided with an outer frame that presses against the outer edge of the brake pad.

[0008] In some embodiments, the brake pad is annular.

[0009] In some embodiments, the brake pad is of split-piece type and is divided into a plurality of circular arc pieces along the circumference.

[0010] In some embodiments, the brake pad is a structure in which silicon is deposited in a preform formed by weaving carbon fibers through high-temperature sintering.

[0011] In some embodiments, the brake disc body and the brake pad are bonded together by an adhesive; or the brake disc body and the brake pad are cast as one body.

[0012] In some embodiments, the groove and the protrusion are both in a circular shape.

[0013] In some embodiments, the brake disc body is fixedly connected to the brake pads on both sides thereof by a plurality of rivets, and the rivets penetrate the brake pads, the brake disc body and the brake pad on the other side in sequence.

[0014] In some embodiments, the plurality of rivets are evenly distributed along the circumference.

[0015] In some embodiments, the rivets are also evenly distributed in the radial direction.

[0016] In some embodiments, a cooling air duct is also included, which is arranged in the interlayer of the connecting surface of the brake disc body; the brake disc is divided into two disc surfaces, and a plurality of connecting entities are arranged between the two disc surfaces, and the plurality of connecting entities are distributed radially, and the remaining part constitutes the cooling air duct.

[0017] The utility model also provides a vehicle, comprising any one of the above-mentioned iron-ceramic composite structure brake discs.

[0018] Compared with the prior art, the utility model sets grooves and outer frames to limit the edge of the brake pad, preventing the brake pad from flying out directly after breaking, thereby improving safety performance. The brake pad made of carbon-carbon / carbon-ceramic material has high strength and temperature resistance, meets the high performance requirements of the brake disc, and reduces the manufacturing and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A cross-sectional view of an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of an embodiment of the utility model;

[0022] Figure 4 is a schematic diagram of the connection surface and the brake pad;

[0023] Figure 5 is a schematic diagram of a cooling air duct;

[0024] Referring to the accompanying drawings, there are a brake disc body 1 , a rivet 2 , a brake pad 3 , an outer frame 4 , a groove 5 , and a cooling air duct 6 . DETAILED DESCRIPTION

[0025] The utility model will now be further described with reference to the accompanying drawings.

[0026] See also Figure 1 and Figure 2 , Figure 1 and Figure 2 What is shown is an embodiment of the utility model, which mainly includes a cast iron brake disc body and a carbon-carbon / carbon-ceramic brake pad. The two brake pads are arranged on the two connecting surfaces of the brake disc body to form a composite structure.

[0027] Preferably, the brake pad uses carbon fiber as raw material, and a preform of carbon fiber is woven according to the design. After the preform is roughly processed, it enters a special device to deposit silicon elements in the preform, and is sintered at high temperature to ceramicize into a thin carbon ceramic body. The carbon-carbon / carbon ceramic material used is less, the shape is simple and the thickness is not large, and it is easy to manufacture. Carbon ceramic has high wear resistance, and at the same time, it has high strength due to the weaving of carbon fiber; and it is an inorganic component, and has higher temperature resistance.

[0028] See also Figure 4 A groove is provided at the edge of the contact surface between the connection surface and the brake pad, and a corresponding protrusion is provided at the contact position between the brake pad and the connection surface. At the same time, an outer frame is also provided at the edge of the brake disc body to abut against the outer edge of the brake pad.

[0029] The fit between the groove and the protrusion can enhance the connection strength at the edge of the brake pad. The outer frame can limit the brake pad in the radial outward direction. When the brake pad breaks or flies out in extreme cases, the above structures can limit and regulate the edge of the brake pad to a certain extent, protect other equipment, and improve safety performance.

[0030] Preferably, the brake pad is in the shape of a ring. The brake pad can also be equally divided into several arc pieces along the circumference to form a split type, which reduces the difficulty of manufacturing and is more convenient for maintenance and replacement. Furthermore, the groove and the protrusion are both in the shape of a ring.

[0031] Further, see Figure 1 The brake disc body is fixedly connected to the two brake pads on both sides thereof by a plurality of rivets. The rivets sequentially penetrate the brake pad, the brake disc body and the connecting holes of the brake pad on the other side to complete the fixation.

[0032] As a preference, see Figure 4, several rivets are evenly distributed along the circumference. And there are two rivets distributed on each circular diameter (the number can also be greater than two), that is, they are also evenly distributed along the radial direction. The evenly distributed rivets increase the connection strength, balance the force, and reduce the possibility of fragmentation.

[0033] Preferably, the brake disc body and the brake pad are bonded and connected by an adhesive to further improve the strength. Preferably, the brake disc body and the brake pad can be cast in one piece. Specifically, when casting the brake disc body, the carbon-carbon / carbon-ceramic brake pad is pre-placed in a casting mold and the brake disc body is cast together with the carbon-carbon / carbon-ceramic part. This connection structure does not contain rivets, and molten iron is filled in the reserved riveting holes to replace the rivets to solidify the two together.

[0034] As a preference, see Figure 5 In another embodiment, a cooling air duct is also retained on the brake disc body, and the cooling air duct is arranged in the interlayer of the connection surface of the brake disc body. Specifically, the brake disc is divided into two brake disc surfaces, and a plurality of connection entities are arranged between the two brake disc surfaces, and the plurality of connection entities are distributed radially to form reinforcement ribs; a plurality of rivets (conventional standard parts) respectively pass through the reinforcement ribs and connect the two brake disc surfaces, and the remaining parts constitute the cooling air duct for heat dissipation.

[0035] The utility model also provides a vehicle, in particular a heavy commercial vehicle, whose brake system comprises any one of the above-mentioned iron-ceramic composite structure brake discs.

[0036] The above describes the implementation mode of the utility model in combination with the drawings and embodiments. The structure given in the embodiments does not constitute a limitation of the utility model. Those skilled in the art can make adjustments as needed. Various deformations or modifications made within the scope of the attached claims are within the scope of protection.

Claims

1. A composite brake disc, comprising a metal brake disc body and a carbon-carbon / carbon-ceramic brake pad, wherein the brake pad is arranged on a connecting surface of the brake disc body, and wherein: A groove is provided at the edge of the contact surface between the connection surface and the brake pad, and a corresponding protrusion is provided at the contact position between the brake pad and the connection surface; The edge of the brake disc body is also provided with an outer frame which abuts against the outer edge of the brake pad.

2. The iron-ceramic composite structure brake disc according to claim 1, characterized in that: The brake pad is annular.

3. The iron-ceramic composite structure brake disc according to claim 1, characterized in that: The brake pad is a split type, divided into several arc pieces along the circumference.

4. The iron-ceramic composite structure brake disc according to claim 1, characterized in that: The brake pad is a structure in which silicon elements are deposited in a preform formed by weaving carbon fibers through high-temperature sintering.

5. The iron-ceramic composite structure brake disc according to claim 1, characterized in that: The brake disc body and the brake pad are also bonded and connected by an adhesive; or the brake disc body and the brake pad are cast as one body.

6. The iron-ceramic composite brake disc according to any one of claims 1 to 5, characterized in that: The groove and the protrusion are both in annular shape.

7. The iron-ceramic composite structure brake disc according to claim 1, characterized in that: The brake disc body is fixedly connected to the brake pads on both sides thereof through a plurality of rivets.

8. The iron-ceramic composite structure brake disc according to claim 1, characterized in that: The rivets are evenly distributed along the circumference; and / or the rivets are also evenly distributed along the radial direction.

9. The iron-ceramic composite structure brake disc according to claim 1, characterized in that: The brake disc body is provided with a cooling air duct. The brake disc is divided into two brake disc surfaces. A plurality of radially distributed connecting entities are provided between the two brake disc surfaces. A plurality of rivets pass through the connecting entities and connect the two brake disc surfaces, and the remaining parts constitute the cooling air duct.

10. A vehicle, characterized in that: A brake disc comprising an iron-ceramic composite structure as described in any one of claims 1-9.

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