A type of automotive brake disc with rapid heat dissipation

Abstract

This utility model relates to the field of brake disc technology and discloses an automotive brake disc with rapid heat dissipation. It includes a brake disc body with heat dissipation holes on the friction surface, the holes extending radially in an arc shape to form heat dissipation strips. Multiple heat dissipation grooves are formed on the side of the brake disc body, with multiple heat dissipation fins spaced apart within each groove. An annular mounting groove is formed near the axis of the brake disc body, communicating with some of the heat dissipation holes. A mounting ring is fitted onto the inner side of the mounting groove, and the mounting ring and the inner side of the mounting groove are rotatably connected via a bearing. Multiple blades are arranged on the outer side of the mounting ring, located within the mounting groove. When the brake disc body stops rotating, the mounting ring and blades continue to rotate for a period of time due to inertia. During this process, the rotating blades accelerate the airflow between the heat dissipation holes on both sides, causing heat to dissipate rapidly, thereby further improving heat dissipation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of brake disc technology, specifically relating to an automotive brake disc that can quickly dissipate heat. Background Technology

[0002] A brake disc is a metal disc that is fixed to the wheel and rotates with it. When braking, the brake calipers clamp the sides of the brake disc, using the resulting friction to force the wheel to slow down until it stops, converting the vehicle's kinetic energy into heat and dissipating it into the air.

[0003] However, during vehicle braking, the brake disc heats up rapidly due to friction. Sustained high temperatures can degrade the brake disc's performance. Therefore, the brake disc must have good heat dissipation capabilities to ensure rapid cooling and maintain stable performance. In existing technologies, common brake disc designs are relatively simple and lack effective heat dissipation structures, resulting in slow heat dissipation during braking and thus affecting braking performance. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a car brake disc that can dissipate heat quickly, so as to solve the technical problem in the prior art that the lack of heat dissipation structure in the brake disc leads to slow heat dissipation during braking, which affects braking performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fast-heat dissipation automotive brake disc includes a brake disc body. Heat dissipation holes are formed on the friction surface of the brake disc body, extending through the entire brake disc body along its thickness direction. The heat dissipation holes extend radially in an arc shape to form heat dissipation strips, which are evenly spaced circumferentially. Multiple heat dissipation grooves are evenly spaced circumferentially on the side of the brake disc body, and multiple heat dissipation fins are spaced within these grooves. An annular mounting groove is formed near the axis of the brake disc body, communicating with some of the heat dissipation holes. A mounting ring is fitted onto the inner side of the mounting groove, and the mounting ring and the inner side of the mounting groove are rotatably connected via a bearing. Multiple blades are formed on the outer side of the mounting ring, and these blades are located within the mounting groove.

[0007] Furthermore, an annular air outlet groove is also provided on the inner side of the heat dissipation groove. The heat dissipation groove and the annular air outlet groove are adjacent to each other. The annular air outlet groove is located at the center position in the thickness direction of the brake disc body. The annular air outlet groove is connected to the outermost heat dissipation hole.

[0008] Furthermore, the mounting groove is also located at the center of the brake disc body in the thickness direction, the axis of the mounting groove coincides with the axis of the brake disc body, the mounting groove is located inside the annular air outlet groove and there is a gap between the two.

[0009] Furthermore, a protruding mounting flange is provided at the center of the brake disc body. A connection hole is opened on the end face of the mounting flange. Bolts pass through the connection hole and fix the brake disc to the wheel hub, thereby enabling the brake disc and the wheel hub to rotate synchronously.

[0010] The beneficial effects of this utility model are as follows:

[0011] Compared with existing technologies, during braking, the friction surfaces of the caliper and the brake disc body are pressed together. The friction force gradually reduces the rotation speed of the brake disc body and the car wheel hub until they stop rotating. After the brake disc body stops rotating, the mounting ring and blades continue to rotate for a period of time under the action of inertia. During this process, the rotating blades accelerate the flow of air between the heat dissipation holes on both sides, so that the heat is dissipated quickly, thereby further improving the heat dissipation efficiency. Attached Figure Description

[0012] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0013] Figure 1 This is an overall schematic diagram of the automotive brake disc capable of rapid heat dissipation in Embodiment 1 of this utility model.

[0014] Figure 2 for Figure 1 Enlarged view at point A1;

[0015] Figure 3 This is a cross-sectional view of the automotive brake disc capable of rapid heat dissipation in Embodiment 1 of this utility model.

[0016] Figure 4 for Figure 3 Enlarged view at point A2;

[0017] Figure 5 for Figure 4 Enlarged view of section A3 in the middle.

[0018] The following labels are used in the attached diagram:

[0019] Brake disc 1, brake disc body 101, mounting flange 102, connecting hole 1021, heat dissipation hole 103, heat dissipation groove 104, heat dissipation fins 105, annular air outlet groove 106, mounting groove 107, mounting ring 108, bearing 109, blade 110. Detailed Implementation

[0020] Example 1, specifically as follows Figures 1-5 As shown.

[0021] A fast-heat dissipation automotive brake disc, the brake disc 1 includes a disc-shaped brake disc body 101 and a mounting flange 102 protruding outward at the center of the brake disc body 101. A connection hole 1021 is opened on the end face of the mounting flange 102, and bolts pass through the connection hole 1021 to fix the brake disc 1 to the wheel hub, thereby enabling the brake disc 1 and the wheel hub to rotate synchronously.

[0022] Heat dissipation holes 103 are formed on the friction surface of the brake disc body 101. The heat dissipation holes 103 extend through the entire brake disc body 101 along its thickness direction. It is worth noting that in this embodiment, the heat dissipation holes 103 extend radially in an arc shape to form heat dissipation strips, which are evenly spaced circumferentially. By providing the heat dissipation holes 103, on the one hand, during braking, the brake disc body 101 generates a large amount of heat under the clamping action of the caliper. This heat is dissipated through the heat dissipation holes 103, reducing the peak temperature of the brake disc 1 and ensuring heat dissipation efficiency while preventing thermal fade in the entire braking system. On the other hand, by providing the heat dissipation holes 103, the weight of the entire brake disc 1 is reduced while ensuring braking performance, achieving a lightweight design for the brake disc 1. Furthermore, by setting the heat dissipation holes 103 to extend in an arc shape, the entire heat dissipation hole 103 is arranged in a turbine-like pattern. When the brake disc rotates, the arc-shaped layout creates an angle difference between the inlet and outlet of the channels. This angle difference allows the channels to actively draw in cool air from one end and expel hot air from the other end, much like fan blades, during rotation.

[0023] Multiple heat dissipation grooves 104 are evenly spaced along the circumferential direction on the side surface of the brake disc body 101. Multiple heat dissipation fins 105 are evenly spaced within each heat dissipation groove 104. In this embodiment, a single heat dissipation groove 104 contains three heat dissipation fins 105, which divide the internal space of the heat dissipation groove 104. By creating the heat dissipation grooves 104 and arranging the heat dissipation fins 105 within them, the heat dissipation area can be effectively increased, improving the heat transfer efficiency between the brake disc body 101 and the air, allowing hot air to escape from the edges, thereby improving heat dissipation efficiency. Furthermore, by creating the heat dissipation grooves 104, sharp corners are avoided at the edges, allowing stress to be evenly distributed across the entire brake disc, effectively preventing stress concentration-induced cracks, thus extending the service life and safety of the brake disc.

[0024] An annular air outlet groove 106 is also provided on the inner side of the heat dissipation groove 104. The heat dissipation groove 104 and the annular air outlet groove 106 are adjacent to each other. The annular air outlet groove 106 is located at the center position in the thickness direction of the brake disc body 101. The cross-section of the heat dissipation groove 104 is circular. In addition, it is worth noting that the annular air outlet groove 106 is connected to the outermost heat dissipation hole 103. The edge of the friction surface of the brake disc body 101 is in direct contact with the caliper, and the temperature changes rapidly and the peak value is high. By setting the annular air outlet groove 106 to connect the outermost heat dissipation hole 103, the airflow and flow speed are increased, thereby ensuring the heat dissipation efficiency at the edge of the friction surface.

[0025] A ring-shaped mounting groove 107 is formed near the axis of the brake disc body 101. The mounting groove 107 is also located at the center of the brake disc body 101 in the thickness direction. The mounting groove 107 is located inside the ring-shaped air outlet groove 106, with a gap between them. The cross-section of the mounting groove 107 is rectangular. It is worth noting that the axis of the mounting groove 107 coincides with the axis of the brake disc body 101. The mounting groove 107 is connected to some of the heat dissipation holes 103. A mounting ring 108 is fitted onto the inner side of the mounting groove 107. The mounting ring 108 and the inner side of the mounting groove 107 are rotatably connected by a bearing 109. Specifically, the inner ring of the bearing 109 is interference-fitted with the inner side of the mounting groove 107, and the outer ring of the bearing 109 is welded to the inner side of the mounting ring 108. Multiple blades 110 are evenly spaced along the circumferential direction on the outer surface of the mounting ring 108, and the blades 110 are located within the mounting groove 107.

[0026] During vehicle operation, the mounting ring 108 and blade 110 rotate synchronously with the wheel hub. When braking, the caliper presses against the friction surface of the brake disc body 101. Through friction, the rotation speed of the brake disc body 101 and the vehicle wheel hub gradually decreases until they stop rotating. After the brake disc body 101 stops rotating, the mounting ring 108 and blade 110 continue to rotate for a period of time due to inertia. During this process, the rotating blade 110 accelerates the airflow between the heat dissipation holes 103 on both sides, allowing heat to dissipate rapidly, thereby further improving heat dissipation efficiency.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A rapidly heat-dissipating automotive brake disc, characterized in that, The brake disc body includes a friction surface with heat dissipation holes that extend through the entire body along its thickness. These holes extend radially in an arc shape to form heat dissipation strips that are evenly spaced circumferentially. Multiple heat dissipation grooves are evenly spaced circumferentially on the side of the brake disc body, each groove containing multiple heat dissipation fins. An annular mounting groove is located near the shaft center of the brake disc body, connecting to some of the heat dissipation holes. A mounting ring is fitted onto the inner side of the mounting groove, and the mounting ring and the inner side of the mounting groove are rotatably connected via a bearing. Multiple blades are located on the outer side of the mounting ring within the mounting groove.

2. The automotive brake disc with rapid heat dissipation according to claim 1, characterized in that, An annular air outlet groove is also provided on the inner side of the heat dissipation groove. The heat dissipation groove and the annular air outlet groove are adjacent to each other. The annular air outlet groove is located at the center position in the thickness direction of the brake disc body. The annular air outlet groove is connected to the outermost heat dissipation hole.

3. The automotive brake disc with rapid heat dissipation according to claim 1, characterized in that, The mounting groove is also located at the center of the brake disc body in the thickness direction. The axis of the mounting groove coincides with the axis of the brake disc body. The mounting groove is located inside the annular air outlet groove and there is a gap between the two.

4. The automotive brake disc with rapid heat dissipation according to claim 1, characterized in that, A mounting flange protruding outward is provided at the center of the brake disc body. A connection hole is opened on the end face of the mounting flange. Bolts pass through the connection hole and fix the brake disc to the wheel hub, so that the brake disc and the wheel hub rotate synchronously.

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