Carbon ceramic brake disc
By designing an improved heat dissipation channel structure on the carbon ceramic brake disc, the problems of uneven heat dissipation and high-temperature gas inflow were solved, resulting in better heat dissipation and extended service life, thus ensuring brake stability.
Patent Information
- Application Number
- CN202520068825.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing carbon ceramic brake discs have poor heat dissipation, resulting in uneven heat distribution, accelerated brake disc wear, and shortened service life. Furthermore, during emergency braking, high-temperature gas flows into the connecting shaft seat, causing its temperature to rise and affecting stability.
A through-hole stepped design and a ring array of connecting platforms are designed on the carbon ceramic brake disc body. Main and auxiliary heat dissipation channels and heat dissipation grooves are set up. By improving the heat dissipation channel structure, the air flow is increased and the temperature of the connecting shaft seat is reduced.
The carbon ceramic brake disc improves heat dissipation, extends service life, reduces temperature rise in the connecting shaft, and ensures braking stability.
Smart Images
Figure CN223511379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of braking equipment technology, specifically to a carbon ceramic brake disc. Background Technology
[0002] With the rapid development of modern transportation, the demand for high-performance braking components is increasing. Carbon-ceramic brake discs, made of carbon fiber reinforced silicon carbide-based composite materials, combine the physical properties of carbon fiber and polycrystalline silicon carbide. They possess numerous advantages such as low density, high temperature resistance, and high and stable friction performance, showing broad application prospects in high-energy braking fields such as automobiles, high-speed trains, and aircraft.
[0003] However, with the current technology, there are still many shortcomings that need to be addressed.
[0004] Firstly, the ventilation structure of domestic carbon ceramic brake discs is mostly a straight groove structure. During braking, this structure causes uneven heat distribution and slow heat dissipation inside the brake disc, resulting in a long-term high temperature state. This leads to accelerated wear of the brake disc, a significant reduction in friction effect, and a marked shortening of service life. Especially under extreme conditions, it can easily cause brake failure and even traffic accidents, seriously threatening traffic safety.
[0005] Secondly, under special circumstances such as emergency braking, due to the sudden change in speed, high-temperature gas will flow to the inside of the brake disc, causing the temperature of the brake disc connecting shaft to rise, which reduces the life of the connecting shaft and is also not conducive to the long-term stable use of the brake disc.
[0006] In conclusion, existing carbon ceramic brake disc technology has shortcomings in terms of heat dissipation and lifespan, and it is necessary to improve and innovate it. Utility Model Content
[0007] In response to the aforementioned technical problems, this application solves the issues of heat dissipation and insufficient lifespan of existing carbon ceramic brake discs.
[0008] To achieve the above objectives, the technical solution adopted in this application is as follows: a carbon ceramic brake disc, including a disc body, wherein a through, circular stepped hole is axially opened at the center of the disc body, and multiple connecting platforms are equally spaced in a ring array on the stepped surface of the stepped hole, and bolt holes are opened on the connecting platforms. The stepped surface between two adjacent connecting platforms of the stepped hole is provided with a semi-circular heat dissipation groove.
[0009] The interior of the disk body has multiple main heat dissipation channels arranged in a ring array at equal intervals, and each main heat dissipation channel is arranged in the radial direction. One end of the main heat dissipation channel extends toward the inner side of the disk body and communicates with a corresponding heat dissipation groove. The other end of the main heat dissipation channel extends out of the outer wall of the disk body. An auxiliary heat dissipation groove is formed on the inner wall of the main heat dissipation channel. A first heat dissipation hole communicating with the auxiliary heat dissipation groove is formed on both end faces of the disk body.
[0010] To better realize this utility model, the disk body is further provided with an auxiliary heat dissipation channel on each side of the main heat dissipation channel, and a second heat dissipation hole communicating with the auxiliary heat dissipation channel is provided on both end faces of the disk body.
[0011] To better realize this utility model, the inner diameter of the main heat dissipation channel is further increased radially from the center of the disk body outwards.
[0012] To better realize this utility model, further, there are multiple auxiliary heat dissipation slots, which are arranged in pairs along the radial direction, and each group of auxiliary heat dissipation slots is arranged mirror-symmetrically on both sides of the main heat dissipation channel.
[0013] To better realize this utility model, the auxiliary heat dissipation groove is further defined as a blind hole, with the blind hole end inclined towards one end of the main heat dissipation channel and the open end of the blind hole inclined towards the other end of the main heat dissipation channel.
[0014] To better realize this utility model, furthermore, the internal volume of the multiple sets of blind holes gradually increases radially from the center of the disk body outwards.
[0015] The technical solution provided by this utility model has the following advantages compared with the prior art:
[0016] 1. Compared with the prior art, this utility model changes the internal diameter of the main heat dissipation channel and adds auxiliary heat dissipation channels and auxiliary heat dissipation slots on the basis of the original heat dissipation channel (the ventilation structure is a straight groove structure), so that the air flow is greater and the heat dissipation effect is better.
[0017] 2. Due to the presence of auxiliary heat dissipation grooves, this utility model reduces the flow of high-temperature air from the outside of the brake disc into the inside, lowers the temperature of the brake disc connecting shaft seat, and improves service life. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 In this utility model Figure 1 Top view;
[0021] Figure 3 In this utility model Figure 2 Side view;
[0022] Figure 4 In this utility model Figure 2 Top view;
[0023] Figure 5 In this utility model Figure 4 Sectional view at point AA.
[0024] In the diagram: 100-Disk body; 101-Connecting platform; 102-Bolt hole; 103-Heat sink; 104-First heat dissipation hole; 105-Main heat dissipation channel; 106-Auxiliary heat dissipation channel; 107-Auxiliary heat dissipation slot; 108-Second heat dissipation hole; 109-Stepped hole. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.
[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0031] Example 1:
[0032] like Figures 1 to 5 As shown, a carbon ceramic brake disc includes a disc body 100. A through, circular stepped hole 109 is axially opened at the center of the disc body 100. Multiple connecting platforms 101 are arranged in a ring array at equal intervals on the stepped surface of the stepped hole 109. Bolt holes 102 are opened on the connecting platforms 101. The stepped surface of the stepped hole 109 between two adjacent connecting platforms 101 is provided with a semi-circular heat dissipation groove 103.
[0033] The interior of the disk body 100 has multiple main heat dissipation channels 105 arranged in a ring array at equal intervals, and each main heat dissipation channel 105 is arranged in the radial direction. One end of the main heat dissipation channel 105 extends toward the inner side of the disk body 100 and communicates with a heat dissipation groove 103. The other end of the main heat dissipation channel 105 extends out of the outer wall of the disk body 100. An auxiliary heat dissipation groove 107 is provided on the inner wall of the main heat dissipation channel 105. A first heat dissipation hole 104 communicating with the auxiliary heat dissipation groove 107 is provided on both end faces of the disk body 100.
[0034] like Figures 1 to 5 As shown, in this embodiment, the disk body 100 has an auxiliary heat dissipation channel 106 mirror-symmetrically opened on both sides of the main heat dissipation channel 105, and a second heat dissipation hole 108 communicating with the auxiliary heat dissipation channel 106 is opened on both end faces of the disk body 100.
[0035] like Figures 1 to 5 As shown, in this embodiment, the inner diameter of the main heat dissipation channel 105 gradually increases radially from the center of the disk body 100 outwards.
[0036] like Figures 1 to 5 As shown, in this embodiment, there are multiple auxiliary heat dissipation slots 107, which are arranged in pairs along the radial direction. Each group of auxiliary heat dissipation slots 107 is arranged symmetrically on both sides of the main heat dissipation channel 105.
[0037] like Figures 1 to 5 As shown, in this embodiment, the auxiliary heat dissipation groove 107 is a blind hole. The blind hole end of the blind hole is inclined towards one end of the main heat dissipation channel 105 (the inclination angle here can be determined according to the actual situation, for example, 15°, 30°, 45° or 60°), and the opening end of the blind hole is inclined towards the other end of the main heat dissipation channel 105 (the inclination angle here can be determined according to the actual situation, for example, 15°, 30°, 45° or 60°).
[0038] like Figures 1 to 5 As shown, in this embodiment, the internal volume of the multiple sets of blind holes gradually increases radially from the center of the disk 100 outwards.
[0039] Compared with the prior art, this utility model changes the internal diameter of the main heat dissipation channel 105 and adds an auxiliary heat dissipation channel 106 and an auxiliary heat dissipation groove 107 on the basis of the original heat dissipation channel (the ventilation structure is a straight groove structure), so that the air flow is greater and the heat dissipation effect is better.
[0040] The presence of the auxiliary cooling groove 107 reduces the flow of hot air from the outside of the brake disc to the inside, lowers the temperature of the brake disc connecting shaft seat, and improves service life.
[0041] Working principle:
[0042] The brake disc is fixedly connected to the vehicle via the connecting platform 101 and the connector, and is fastened to the vehicle with bolts via bolt holes 102. When the vehicle moves, the brake disc body 100 can be rotated.
[0043] When the brake disc rotates, according to Bernoulli's principle, the main heat dissipation channel 105 and the auxiliary heat dissipation channel 106 draw the air from the brake disc surface (i.e. the two ends of the disc body 100) into the auxiliary heat dissipation groove 107 through the first heat dissipation hole 104 and the second heat dissipation hole 108.
[0044] At the same time, the air inside the brake disc is drawn into the heat dissipation groove 103 and finally discharged from the brake disc through the main heat dissipation channel 105 and the auxiliary heat dissipation channel 106. During this process, due to the rapid flow of air, the heat generated by friction of the brake disc is carried out of the brake disc, thereby achieving the purpose of cooling.
[0045] In special situations such as emergency braking, the presence of the auxiliary heat dissipation groove 107 allows the returning high-temperature gas to enter the auxiliary heat dissipation groove 107 during its flow. However, since the opening direction of the auxiliary heat dissipation groove 107 points to the outside of the brake disc (i.e., the opening end of the blind hole tends towards the other end of the main heat dissipation channel 105), the high-temperature gas eventually flows out to the outside, ultimately reducing the inflow of high-temperature air from the outside of the brake disc to the inside and lowering the temperature of the brake disc connecting shaft seat.
[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A carbon-ceramic brake disc, characterized in that: The device includes a disk body (100), which has a through, circular stepped hole (109) axially opened at the center of the disk body (100). Multiple connecting platforms (101) are arranged at equal intervals in a ring array on the stepped surface of the stepped hole (109). Bolt holes (102) are opened on the connecting platforms (101). The stepped surfaces of the stepped holes (109) between two adjacent connecting platforms (101) are all provided with semi-circular heat dissipation grooves (103). The interior of the disk (100) has multiple main heat dissipation channels (105) arranged in a ring array at equal intervals, and each main heat dissipation channel (105) is arranged in the radial direction. One end of the main heat dissipation channel (105) extends toward the inner side of the disk (100) and is connected to a heat dissipation groove (103). The other end of the main heat dissipation channel (105) extends out of the outer wall of the disk (100). An auxiliary heat dissipation groove (107) is provided on the inner wall of the main heat dissipation channel (105). A first heat dissipation hole (104) communicating with the auxiliary heat dissipation groove (107) is provided on both end faces of the disk (100).
2. The carbon ceramic brake disc according to claim 1, characterized in that: The disk body (100) has an auxiliary heat dissipation channel (106) mirror-symmetrically opened on both sides of the main heat dissipation channel (105). The disk body (100) has a second heat dissipation hole (108) on both end faces that communicates with the auxiliary heat dissipation channel (106).
3. A carbon ceramic brake disc according to claim 2, characterized in that: The inner diameter of the main heat dissipation channel (105) gradually increases radially from the center of the disk (100) outwards.
4. A carbon ceramic brake disc according to claim 1, 2 or 3, characterized in that: There are multiple auxiliary heat dissipation slots (107), and they are arranged in pairs along the radial direction. Each group of auxiliary heat dissipation slots (107) is arranged in a mirror image symmetrically on both sides of the main heat dissipation channel (105).
5. A carbon ceramic brake disc according to claim 4, characterized in that: The auxiliary heat dissipation groove (107) is a blind hole, with the blind hole end inclined towards one end of the main heat dissipation channel (105) and the open end of the blind hole inclined towards the other end of the main heat dissipation channel (105).
6. A carbon ceramic brake disc according to claim 5, characterized in that: The internal volume of the multiple sets of blind holes gradually increases radially from the center of the disk (100) outwards.