Split type brake disc

Abstract

The split type brake disc comprises a carbon ceramic disc body and a joint which are matched with each other, and the carbon ceramic disc body and the joint are connected in a fastened mode through a bolt and a nut. The bolt is sleeved with a shaft sleeve and penetrates through the carbon-ceramic plate body and the joint, a first heat insulation part is arranged between the shaft sleeve and the carbon-ceramic plate body, the nut is in threaded fit with the bolt and tightly presses the side, away from the joint, of the carbon-ceramic plate body, and a second heat insulation part is arranged between the nut and the carbon-ceramic plate body. According to the split type brake disc, the nut and the carbon-ceramic disc body are separated through the second heat insulation component, the shaft sleeve and the carbon-ceramic disc body are separated through the first heat insulation component, heat transfer from the carbon-ceramic disc body to the nut and the first heat insulation component is reduced, and the phenomenon that the carbon-ceramic disc body cannot be damaged when the carbon-ceramic disc body is under the high-temperature condition, especially under the racing track working condition can be effectively reduced. The temperature of the connecting pieces such as the nut and the first heat insulation component is adjusted, so that the connecting pieces are prevented from being reduced in yield strength and tensile strength and even deformed in the working process, the service life of the device is prolonged, and the safety performance is improved.

Description

Technical Field

[0001] This application relates to the field of braking device technology, and in particular to split brake discs. Background Technology

[0002] Compared to traditional steel brake discs, carbon-ceramic brake discs have stronger high-temperature resistance and maintain good braking performance even in high-temperature environments. However, for split-type carbon-ceramic brake discs, the bushings, bolts, nuts, and other connecting parts are usually made of stainless steel. The yield strength and tensile strength of stainless steel components decrease with increasing temperature. For example, the strength of 304 stainless steel at 500℃ is only about 60% of that at room temperature. This can cause deformation and loosening of the connecting parts, resulting in lower connection reliability of the carbon-ceramic brake disc. Utility Model Content

[0003] Therefore, it is necessary to provide a split brake disc to solve the problem of reduced strength, deformation and loosening of the connecting parts on the split carbon ceramic brake disc under high temperature conditions.

[0004] A split-type brake disc includes a mating carbon-ceramic disc body and a coupling, wherein the carbon-ceramic disc body and the coupling are fastened together by bolts and nuts; a bushing is fitted on the bolt and passes through the carbon-ceramic disc body and the coupling; a first heat insulation component is provided between the bushing and the carbon-ceramic disc body; the nut is threadedly engaged with the bolt and pressed against the side of the carbon-ceramic disc body opposite to the coupling; a second heat insulation component is provided between the nut and the carbon-ceramic disc body.

[0005] In one embodiment, the carbon ceramic disc has a first mounting hole and a plurality of first fastening holes arranged around the first mounting hole, the connector has a second mounting hole and a plurality of second fastening holes arranged around the second mounting hole, the first mounting hole and the second mounting hole are positioned corresponding to each other, the plurality of first fastening holes and the plurality of second fastening holes are respectively one-to-one, and the bolt passes through the first fastening hole and the second fastening hole.

[0006] In one embodiment, the first heat insulation component is an aerogel tubular structure, and the first heat insulation component is sleeved on the bushing.

[0007] In one embodiment, the wall thickness of the first heat insulation component is 0.1 mm to 2 mm.

[0008] In one embodiment, the second thermal insulation component is an aerogel sheet structure.

[0009] In one embodiment, the thickness of the second heat insulation component is 0.1 mm to 5 mm.

[0010] In one embodiment, a metal gasket and a third heat insulation component are provided between the carbon ceramic disc and the connector. The metal gasket and the third heat insulation component are respectively sleeved on the first heat insulation component, and the third heat insulation component is located between the metal gasket and the carbon ceramic disc.

[0011] In one embodiment, the third thermal insulation component is an aerogel sheet structure.

[0012] In one embodiment, the thickness of the third heat insulation component is 0.1 mm to 5 mm.

[0013] In one embodiment, the carbon ceramic disc has multiple heat dissipation holes.

[0014] In one embodiment, the bushing includes a tubular portion and a limiting portion surrounding one end of the outer wall of the tubular portion, the limiting portion pressing against the side of the mortise facing away from the carbon ceramic disc.

[0015] Compared with traditional solutions, the above-mentioned split brake disc has the following advantages:

[0016] The aforementioned split brake disc nut is separated from the carbon ceramic disc body by a second heat insulation component, and the bushing is separated from the carbon ceramic disc body by a first heat insulation component. This reduces heat transfer from the carbon ceramic disc body to the nut and the first heat insulation component, effectively lowering the temperature of the nut and the first heat insulation component and other connecting parts when the carbon ceramic disc body is at high temperature, especially under track conditions. This prevents the connecting parts from experiencing a decrease in yield strength and tensile strength or even deformation during operation, thus improving the lifespan and safety performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a split brake disc according to an embodiment of this application;

[0018] Figure 2 for Figure 1 The exploded view of the split brake disc shown.

[0019] Figure 3 for Figure 1 A partial schematic diagram of the split brake disc is shown.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100. Split brake disc; 110. Carbon ceramic disc body; 111. First mounting hole; 112. First fastening hole; 113. Heat dissipation hole; 120. Connector; 121. Second mounting hole; 122. Second fastening hole; 130. Bolt; 140. Nut; 150. Bushing; 151. Tubular part; 152. Limiting part; 160. First heat insulation component; 170. Second heat insulation component; 180. Metal gasket; 190. Third heat insulation component. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please refer to Figure 1 and Figure 2 As shown, a split brake disc 100 according to an embodiment of this application includes a cooperating carbon ceramic disc body 110 and a connector 120.

[0028] The carbon-ceramic disc 110 and the connector 120 are fastened together by bolts 130 and nuts 140. A bushing 150 is fitted onto the bolt 130 and passes through both the carbon-ceramic disc 110 and the connector 120. A first heat-insulating component 160 is provided between the bushing 150 and the carbon-ceramic disc 110. The nut 140 is threaded into the bolt 130 and pressed against the side of the carbon-ceramic disc 110 opposite to the connector 120. Figure 3 As shown, a second heat insulation component 170 is provided between the nut 140 and the carbon ceramic disc 110.

[0029] The aforementioned split brake disc 100, nut 140, and carbon ceramic disc body 110 are separated by a second heat insulation component 170, and the bushing 150 and carbon ceramic disc body 110 are separated by a first heat insulation component 160. This reduces heat transfer from the carbon ceramic disc body 110 to the nut 140 and the first heat insulation component 160, effectively reducing the temperature of the connecting parts such as the nut 140 and the first heat insulation component 160 when the carbon ceramic disc body 110 is under high temperature conditions, especially under track conditions. This prevents the connecting parts from experiencing a decrease in yield strength and tensile strength or even deformation during operation, thereby improving the lifespan and safety performance of the device.

[0030] The carbon-ceramic disc 110, as the core friction component of the split brake disc 100, possesses high strength, high heat resistance, and excellent friction coefficient stability, enabling it to maintain structural integrity for extended periods under high-temperature conditions. The hub 120, a key component connecting the carbon-ceramic disc 110 to the vehicle wheel hub, is made of a material with good structural strength, such as steel, allowing the split brake disc 100 to be stably installed in the vehicle braking system. The carbon-ceramic disc 110 and hub 120 are securely connected by bolts 130 and nuts 140, forming a detachable split structure.

[0031] In some examples, the carbon-ceramic disc 110 has a ring-shaped structure. In some examples, the carbon-ceramic disc 110 has multiple heat dissipation holes 113 distributed on it. The arrangement of the heat dissipation holes 113 can increase the contact area between the carbon-ceramic disc 110 and the air, accelerate the airflow, and quickly remove heat from the carbon-ceramic disc 110 through convection heat transfer. The heat dissipation holes 113 are distributed, for example, but not limited to, radially or axially along the carbon-ceramic disc 110.

[0032] In some examples, the carbon ceramic disc 110 has a first mounting hole 111 and a plurality of first fastening holes 112 arranged around the first mounting hole 111. For example, the plurality of first fastening holes 112 are evenly distributed around the first mounting hole 111. The mortise and tenon joint 120 has a second mounting hole 121 and a plurality of second fastening holes 122 arranged around the second mounting hole 121. For example, the plurality of second fastening holes 122 are evenly distributed around the second mounting hole 121.

[0033] The first mounting hole 111 of the carbon ceramic disc 110 corresponds to the second mounting hole 121 of the mating head 120. The first mounting hole 111 and the second mounting hole 121 are used for assembling vehicle wheel hubs. The plurality of first fastening holes 112 of the carbon ceramic disc 110 correspond one-to-one with the plurality of second fastening holes 122 of the mating head 120. Bolts 130 pass through the first fastening holes 112 and the second fastening holes 122. Nuts 140 are threadedly connected to bolts 130 and are pressed against the side of the carbon ceramic disc 110 opposite to the mating head 120.

[0034] The nut 140 is made of a metal such as stainless steel, which has high strength. However, its yield strength and tensile strength gradually decrease as the temperature rises. To overcome this problem, the nut 140 is separated from the carbon-ceramic disc 110 by a second heat-insulating component 170, preventing direct contact between the nut 140 and the carbon-ceramic disc 110 and reducing heat transfer from the carbon-ceramic disc 110 to the nut 140. This prevents the nut 140 from experiencing a decrease in strength or deformation due to high temperatures, thus avoiding a reduction in its fastening strength.

[0035] The second thermal insulation component 170 is made of a thermal insulation material with low thermal conductivity and high temperature resistance. For example, in some examples, the second thermal insulation component 170 is an aerogel sheet structure. Further, in some examples, the second thermal insulation component 170 is a silica aerogel sheet structure.

[0036] Aerogels possess extremely low thermal conductivity, ranging from 0.012 W / (m·K) to 0.016 W / (m·K). Their nanoscale porous structure effectively blocks heat transfer pathways via conduction, convection, and radiation. Nut 140, as a connecting component, is typically installed in very compact spaces. By designing the second insulation component 170 as an aerogel sheet structure, the thickness of the aerogel is only 1 / 3 to 1 / 10 of that of traditional materials, achieving the same insulation effect. Therefore, it can achieve highly efficient insulation in extremely small spaces. The aerogel sheet provides excellent insulation and easily adapts to narrow installation gaps, preventing loosening of the connection due to excessive thickness of the second insulation component 170.

[0037] In some examples, the thickness of the second heat insulation component 170 is 0.1mm to 5mm, specifically 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, etc.

[0038] In some examples, the bushing 150 includes a tubular portion 151 and a retaining portion 152 surrounding one end of the outer wall of the tubular portion 151. The tubular portion 151 is through which a bolt 130 passes. When the nut 140 is tightened, the retaining portion 152 presses against the side of the head 120 away from the carbon ceramic disc 110.

[0039] The bushing 150 is made of a metal such as stainless steel, which has high strength. However, its yield strength and tensile strength gradually decrease as the temperature rises. To overcome this problem, the bushing 150 is separated from the carbon ceramic disc 110 by a first heat insulation component 160, so that the bushing 150 and the carbon ceramic disc 110 do not come into direct contact. This prevents the bushing 150 from losing strength or deforming due to high temperature, thereby affecting its radial positioning function on the bolt 130.

[0040] The first thermal insulation component 160 is made of a thermal insulation material with low thermal conductivity and high temperature resistance. For example, in some examples, the first thermal insulation component 160 is an aerogel tubular structure, and the first thermal insulation component 160 is sleeved on the bushing 150. Further, in some examples, the first thermal insulation component 160 is a silica aerogel tubular structure. Setting the first thermal insulation component 160 as an aerogel tubular structure enables efficient thermal insulation and can easily adapt to narrow installation gaps.

[0041] The inner diameter of the first heat insulation component 160 is adapted to the outer diameter of the bushing 150, ensuring that the first heat insulation component 160 can be tightly fitted onto the outside of the bushing 150. In some examples, the inner diameter of the first heat insulation component 160 is 0.1mm to 2mm, specifically, for example, 0.1mm, 0.5mm, 1mm, 2mm, etc.

[0042] The wall thickness of the first heat insulation component 160 is approximately equal to the distance between the inner wall of the first fastening hole 112 of the bushing 150 and the carbon ceramic disc 110. Preferably, the inner wall of the first fastening hole 112 is in close contact with the outer wall of the first heat insulation component 160 to improve the heat insulation effect and ensure the structural stability of the device. In some examples, the wall thickness of the first heat insulation component 160 is 0.1mm to 2mm, specifically, for example, 0.1mm, 0.5mm, 1mm, 2mm, etc.

[0043] like Figure 2 As shown, in some examples, a metal gasket 180 and a third heat insulation component 190 are provided between the carbon ceramic disc 110 and the joint 120. The metal gasket 180 and the third heat insulation component 190 are respectively fitted onto the first heat insulation component 160, and the third heat insulation component 190 is located between the metal gasket 180 and the carbon ceramic disc 110. By providing the metal gasket 180 and the third heat insulation component 190 between the carbon ceramic disc 110 and the joint 120, the assembly sealing and structural stability of the device are improved.

[0044] The metal gasket 180 is made of a metal such as stainless steel, which has high strength. However, its yield strength and tensile strength gradually decrease as the temperature rises. To overcome this problem, a third heat insulation component 190 is provided between the metal gasket 180 and the carbon-ceramic disc 110. The third heat insulation component 190 separates the metal gasket 180 from the carbon-ceramic disc 110, preventing direct contact between them and reducing heat transfer from the carbon-ceramic disc 110 to the metal gasket 180. This prevents the metal gasket 180 from experiencing a decrease in strength or deformation due to high temperatures, thus avoiding reduced structural stability.

[0045] The third thermal insulation component 190 is made of a thermal insulation material with low thermal conductivity and high temperature resistance. For example, in some examples, the third thermal insulation component 190 is an aerogel sheet structure. Further, in some examples, the third thermal insulation component 190 is a silica aerogel sheet structure. Setting the third thermal insulation component 190 as an aerogel sheet structure enables efficient thermal insulation and can easily adapt to narrow installation gaps.

[0046] In some examples, the thickness of the third thermal insulation component 190 is 0.1mm to 5mm, specifically 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, etc.

[0047] The aforementioned split brake disc 100, nut 140, and carbon ceramic disc body 110 are separated by a second heat insulation component 170, and the bushing 150 and carbon ceramic disc body 110 are separated by a first heat insulation component 160. This reduces heat transfer from the carbon ceramic disc body 110 to the nut 140 and the first heat insulation component 160, effectively reducing the temperature of the connecting parts such as the nut 140 and the first heat insulation component 160 when the carbon ceramic disc body 110 is under high temperature conditions, especially under track conditions. This prevents the connecting parts from experiencing a decrease in yield strength and tensile strength or even deformation during operation, thereby improving the lifespan and safety performance of the device.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A split-type brake disc, characterized in that, The device includes a mating carbon-ceramic disc and a fitting, which are fastened together by bolts and nuts. A bushing is fitted on the bolt and passes through the carbon-ceramic disc and the fitting. A first heat-insulating component is provided between the bushing and the carbon-ceramic disc. The nut is threaded with the bolt and pressed against the side of the carbon-ceramic disc opposite to the fitting. A second heat-insulating component is provided between the nut and the carbon-ceramic disc.

2. The split brake disc as described in claim 1, characterized in that, The carbon ceramic disc has a first mounting hole and a plurality of first fastening holes arranged around the first mounting hole. The connector has a second mounting hole and a plurality of second fastening holes arranged around the second mounting hole. The first mounting hole and the second mounting hole are positioned correspondingly. The plurality of first fastening holes and the plurality of second fastening holes are respectively one-to-one corresponding. The bolt passes through the first fastening hole and the second fastening hole.

3. The split brake disc as described in claim 1, characterized in that, The first heat insulation component is an aerogel tubular structure, and the first heat insulation component is sleeved on the bushing.

4. The split brake disc as described in claim 3, characterized in that, The wall thickness of the first heat insulation component is 0.1mm to 2mm.

5. The split brake disc as described in claim 1, characterized in that, The second heat insulation component is an aerogel sheet structure.

6. The split brake disc as described in claim 5, characterized in that, The thickness of the second heat insulation component is 0.1mm to 5mm.

7. The split brake disc as described in any one of claims 1 to 6, characterized in that, A metal gasket and a third heat insulation component are provided between the carbon ceramic disc and the fitting head. The metal gasket and the third heat insulation component are respectively fitted onto the first heat insulation component, and the third heat insulation component is located between the metal gasket and the carbon ceramic disc.

8. The split brake disc as described in claim 7, characterized in that, The third heat insulation component is an aerogel sheet structure.

9. The split brake disc as described in claim 8, characterized in that, The thickness of the third heat insulation component is 0.1mm to 5mm.

10. The split brake disc as described in any one of claims 1 to 6, characterized in that, The carbon ceramic disc has multiple heat dissipation holes distributed on it; And / or, the bushing includes a tubular portion and a limiting portion surrounding one end of the outer wall of the tubular portion, the limiting portion pressing against the side of the fitting away from the carbon ceramic disc.

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