CN220910300U - Brake disc - Google Patents

Abstract

The application relates to a brake disc, which comprises a metal inner ring and a carbon-ceramic composite outer ring, wherein the outer periphery of the metal inner ring is fixedly connected with the inner periphery of the carbon-ceramic composite outer ring. The brake disc has the advantages of simple structure, simple manufacturing process and higher structural strength.

Description

Brake disc

Technical Field

The application relates to the technical field of automobiles, in particular to a brake disc.

Background

The outer ring of the brake disc for friction with the brake caliper is typically made of a carbon ceramic composite material and the inner ring for mounting with the wheel hub is typically made of metal.

The outer ring made of the carbon ceramic composite material and the inner ring made of the metal material are generally directly manufactured in an integrated manufacturing mode. The brake disc manufactured by the method is complex in manufacturing process, long in production period and high in manufacturing cost. Meanwhile, the outer ring made of the carbon-ceramic composite material and the inner ring made of the metal material are integrally manufactured, so that the inner structure of the brake disc is complex, the structural strength of the brake disc is difficult to guarantee, and the working stability of the brake disc is reduced.

Disclosure of utility model

In order to solve the problems, the application provides the brake disc which is simple in structure and high in structural strength. The method specifically comprises the following steps:

The application provides a brake disc, which comprises a metal inner ring and a carbon-ceramic composite outer ring, wherein the outer periphery of the metal inner ring is fixedly connected with the inner periphery of the carbon-ceramic composite outer ring.

According to the brake disc, the metal inner ring is arranged, so that the brake disc can be fixedly arranged on the wheel hub and synchronously rotates along with the wheel. And meanwhile, the carbon-ceramic composite outer ring is arranged, so that the brake caliper can form a supporting and holding effect with the brake disc and generate friction effect in the braking process. When the automobile starts to brake, the brake calipers are abutted against two opposite surfaces of the outer ring of the carbon-ceramic composite material of the brake disc, friction force is generated to reduce the rotating speed of the brake disc, and the wheels are driven by the brake disc to form synchronous deceleration, so that the braking function of the brake disc is realized.

The carbon-ceramic composite material has the advantages of low density, high temperature resistance, wear resistance and high stability, and the carbon-ceramic composite material is arranged on the outer ring of the carbon-ceramic composite material, so that the wear resistance and the high temperature resistance of the brake disc can be ensured, the service effect and the stability of the brake disc are further improved, and the service life of the brake disc is prolonged. The metal inner ring is made of metal, so that the metal inner ring can form good installation effect and matching effect with the wheel hub, and the matching degree between the metal inner ring and the wheel hub is improved. Meanwhile, the metal material has the advantages of low density and excellent heat conduction performance, and the metal inner ring is made of metal, so that the metal inner ring has good heat conduction performance, the overall quality of the brake disc can be reduced, and the use effect of the brake disc is improved.

In one embodiment, the brake disc comprises a first surface and a second surface which are opposite to each other along the thickness direction of the brake disc, the outer peripheral surface of the metal inner ring is provided with a first flange, the thickness of the first flange is smaller than that of the metal inner ring, and the first flange is provided with a first positioning surface which is away from the first surface; the inner peripheral surface of the outer ring of the carbon ceramic composite material is provided with a second flange, the thickness of the second flange is smaller than that of the outer ring of the carbon ceramic composite material, and the second flange is provided with a second positioning surface which is away from the second surface; the first positioning surface is attached to and fixed with the second positioning surface, so that the metal inner ring is fixedly connected with the outer ring of the carbon-ceramic composite material.

According to the brake disc, the first flange is arranged on the outer peripheral surface of the metal inner ring, and the second flange is arranged on the inner peripheral surface of the carbon ceramic composite outer ring, so that the first positioning surface of the first flange and the second positioning surface of the second flange can be mutually attached and fixed, the effect of mutually fixing the metal inner ring and the carbon ceramic composite outer ring is further formed, the defect that the metal inner ring and the carbon ceramic composite outer ring mutually rotate when the brake disc achieves a braking function is avoided, the structural strength of the brake disc is guaranteed, and the working stability and the braking effect of the brake disc are further guaranteed. Meanwhile, the first flange is arranged on the outer peripheral surface of the metal inner ring, and the second flange is arranged on the inner peripheral surface of the carbon ceramic composite outer ring, so that the structure of the first flange and the structure of the second flange can form an effect of mutual matching, the inner structure of the brake disc is simplified, the manufacturing procedure for manufacturing the brake disc can be simplified, and the manufacturing difficulty of manufacturing the brake disc is reduced.

In one embodiment, the material of the inner metal ring includes at least one of 6-series aluminum of aluminum-magnesium alloy, 7-series aluminum of Al-Zn-MgCu alloy, and gray cast iron.

In this embodiment, the material of aluminum alloy has the advantage that density is little, thermal expansion coefficient is little, heat conductivility is good and wear resistance is high, can be the aluminum alloy through the material that sets up the metal inner ring, can reduce the weight of brake disc, reduces the temperature when the brake disc is braked to can avoid the metal inner ring to be heated expansion deformation too big when the braking and the carbon ceramic combined material outer loop to form the condition emergence of mutual extrusion, and then can improve holistic job stabilization nature, work effect and the working life of brake disc.

In one embodiment, the thickness of the outer ring of the carbon-ceramic composite material is greater than that of the inner metal ring, and the two opposite surfaces of the outer ring of the carbon-ceramic composite material are respectively configured as a first surface and a second surface of the brake disc; the metal inner ring comprises a first end face and a second end face which are opposite to each other along the thickness direction of the metal inner ring, and the distance between the first end face and the first surface is equal to the distance between the second end face and the second surface.

In this embodiment, through setting up the thickness of carbon ceramic combined material outer loop and being greater than the thickness of metal inner loop to set up to have interval distance between first terminal surface and the first surface, have interval distance between second terminal surface and the second surface, can guarantee to form certain interval distance between metal inner loop and the first surface and the second surface of brake disc respectively, in order to reduce the influence of a large amount of heat that produce at first surface and second surface to metal inner loop when brake disc braking, avoid metal inner loop to receive too fast and influence job stabilization nature.

Meanwhile, the distance between the first end face and the first surface is equal to the distance between the second end face and the second surface, so that heat generated by friction of the brake disc can be uniformly transferred from the first end face and the second end face, which are opposite to each other, of the metal inner ring to the metal inner ring, the metal inner ring can uniformly receive heat transfer of the carbon ceramic composite outer ring, different deformation of the metal inner ring caused by uneven heating at different positions is avoided, and accordingly adverse effects are generated on the overall working stability and the working effect of the brake disc.

In one embodiment, the distance between the first end surface and the first surface in the thickness direction of the brake disc is 22-42 mm.

In one embodiment, the distance between the second end surface and the second surface in the thickness direction of the brake disc is 22-42 mm.

In one embodiment, the brake disc comprises a plurality of fixing pieces, the plurality of fixing pieces are arranged at intervals along the circumferential direction of the outer ring of the carbon-ceramic composite material, and each fixing piece penetrates through the second flange along the thickness direction of the brake disc and is fixed to the first flange.

In this embodiment, through setting up each mounting and running through the second flange and being fixed in first flange along the thickness direction of brake disc respectively, can make first locating surface and second locating surface laminating each other and fix, and then form the effect that metal inner ring and carbon ceramic combined material outer loop are fixed each other. Through setting up a plurality of mounting, can improve the joint strength of metal inner ring and carbon ceramic combined material outer loop to further improve brake disc's job stabilization nature and work effect. Through setting up a plurality of mounting along the circumference interval arrangement of carbon ceramic combined material outer loop for brake disc atress is even, and then can improve brake disc structural strength and structural stability. Meanwhile, the fixing effect between the metal inner ring and the carbon ceramic composite outer ring is achieved through the fixing piece, installation between the metal inner ring and the carbon ceramic composite outer ring is facilitated, matching precision between the metal inner ring and the carbon ceramic composite outer ring can be guaranteed, and the product yield of the brake disc is improved.

In one embodiment, the first positioning surface is convexly provided with a plurality of raised strips, each raised strip extends along the radial direction of the metal inner ring and is connected with the outer peripheral surface of the metal inner ring, and the raised strips are distributed at intervals along the circumferential direction of the metal inner ring; the second positioning surface is provided with a plurality of grooves which are arranged in one-to-one correspondence with the convex strips; each raised strip is embedded into one groove, and the width of the circumferential raised strip along the metal inner ring is equal to the width of the groove.

In this embodiment, through protruding the being equipped with the sand grip at first locating surface, set up the recess in the position that the second locating surface corresponds to the sand grip to set up every sand grip and imbed in a recess respectively, can increase the area of laminating between first locating surface and the second locating surface, and then improve the connection stability of metal inner ring and carbon ceramic combined material outer loop. Simultaneously, through the cooperation between sand grip and the recess for the shearing force that partial mounting born can be shared to the sand grip, with structural strength and the structural stability of improvement brake disc. Through setting up the width of the circumference sand grip along the metal inner ring and the width of recess equals, can inject the displacement of sand grip along metal inner ring circumference in the recess, and then can bear the shearing force with guaranteeing the sand grip to further improve the structural strength of brake disc.

In one embodiment, the dimension of the protruding strip along the thickness direction of the brake disc is 1-10 mm.

In one embodiment, each of the protruding strips has an extension portion, and the extension portion is attached to the outer peripheral surface of the metal inner ring and extends in the thickness direction of the brake disc in a direction away from the second flange.

In one embodiment, the second positioning surface is convexly provided with a plurality of raised strips, each raised strip extends along the radial direction of the outer ring of the carbon-ceramic composite material and is connected with the inner peripheral surface of the outer ring of the carbon-ceramic composite material, and the raised strips are distributed along the circumferential direction of the outer ring of the carbon-ceramic composite material; the first positioning surface is provided with a plurality of grooves which are arranged in one-to-one correspondence with the convex strips; each raised strip is embedded into one groove, and the width of the circumferential raised strip along the outer ring of the carbon-ceramic composite material is equal to the width of the groove.

In one embodiment, the sum of the height dimension of the raised strip relative to the first positioning surface and the thickness dimension of the first flange is equal to the thickness dimension of the metal inner ring.

In this embodiment, the sum of the height dimension of the protruding strip relative to the first positioning surface and the thickness dimension of the first flange is equal to the thickness dimension of the metal inner ring, so as to increase the area of the protruding strip bearing the shearing force, further improve the structural strength of the brake disc and ensure the working stability of the brake disc.

In one embodiment, the groove extends through the second flange in the thickness direction of the outer ring of carbon-ceramic composite material.

In this embodiment, the grooves penetrate the second flange along the thickness direction of the outer ring of the carbon-ceramic composite material, so that the matching effect between the grooves and the raised strips can be improved, and meanwhile, the grooves can be conveniently machined and manufactured, so that the manufacturing process of the brake disc is further simplified.

In one embodiment, a gap is left between the inner surface of the groove and the outer surface of the protruding strip in the radial direction of the brake disc.

In this embodiment, through setting up the clearance between the surface of internal surface and the sand grip of recess, can avoid sand grip and recess to lead to the two mutual extrusions because of the coefficient of expansion is different and the deformation is different after being heated to make metal inner ring or carbon ceramic combined material outer loop probably appear bad phenomenon such as crackle.

In one embodiment, the gap has a width dimension in the radial direction of the brake disc of 5-20 mm.

In one embodiment, the brake disc is provided with a plurality of heat dissipation holes, the plurality of heat dissipation holes are distributed at intervals along the circumferential direction of the brake disc, and the heat dissipation holes penetrate through the outer ring and the inner metal ring of the carbon-ceramic composite material along the radial direction of the brake disc.

In this embodiment, through setting up the louvre to set up the opposite both ends of every louvre and run through respectively in the outer peripheral face of carbon-ceramic combined material outer loop and the inner peripheral face of metal inner loop, make the heat that transfers to the metal inner loop can follow the louvre and transfer out the brake disc, and then can improve the radiating effect of brake disc, avoid the heat gathering unable heat dissipation and influence the structural performance of brake disc.

In one embodiment, a gap is left between the outer circumferential surface of the metal inner ring and the inner end surface of the second flange in the radial direction of the brake disc.

In this embodiment, a gap is left between the outer peripheral surface of the metal inner ring and the inner peripheral surface of the second flange, so that the metal inner ring and the carbon ceramic composite outer ring can be prevented from being mutually extruded due to different deformation after being heated caused by different expansion coefficients, and adverse phenomena such as cracks and the like of the metal inner ring or the carbon ceramic composite outer ring can be avoided.

In one embodiment, the clearance between the outer circumferential surface of the inner metal ring and the inner end surface of the second flange in the radial direction of the brake disc is greater than or equal to 3mm.

In one embodiment, a gap is left between the outer end surface of the first flange along the radial direction of the brake disc and the inner peripheral surface of the carbon-ceramic composite outer ring along the radial direction of the brake disc.

In this embodiment, a gap is left between the outer peripheral surface of the first flange and the inner peripheral surface of the outer ring of the carbon ceramic composite material, so that the metal inner ring and the outer ring of the carbon ceramic composite material can be prevented from being mutually extruded due to different deformation after being heated caused by different expansion coefficients, and adverse phenomena such as cracks and the like of the metal inner ring or the outer ring of the carbon ceramic composite material can be avoided.

In one embodiment, a gap between an outer end surface of the first flange in a radial direction of the brake disc and an inner peripheral surface of the carbon-ceramic composite outer ring is greater than or equal to 3mm.

In one embodiment, the inner metal ring has a first volume and the outer carbon ceramic composite ring has a second volume, the ratio between the first volume and the second volume being between 0.15 and 0.3.

In this embodiment, the ratio between the first volume and the second volume is set to be 0.15-0.3, so as to limit the ratio of the volume of the metal inner ring in the brake disc, so as to avoid the adverse phenomenon that the carbon ceramic composite outer ring may crack due to extrusion of the carbon ceramic composite outer ring caused by overlarge volume expansion change of the heated metal inner ring, that is, the ratio between the first volume and the second volume is set to be 0.15-0.3, and further ensure the working performance and the working effect of the brake disc.

In one embodiment, the distance between the radially outer end surface of the first flange in the radial direction of the brake disc and the outer circumferential surface of the metal inner ring is 5-10 mm.

In one embodiment, the distance between the outer circumferential surface of the inner metal ring and the inner circumferential surface of the inner metal ring is 5-20 mm in the radial direction of the brake disc.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the working scenario of a brake disc of the present application;

FIG. 2 is a schematic view of the embodiment of FIG. 1 from the perspective of one side of the brake disc of the present application;

FIG. 3 is a schematic view of the embodiment of FIG. 1 from the other side of the brake disc of the present application;

FIG. 4 is a schematic view of the embodiment of FIG. 3 showing the structure of the brake disc of the present application from the view of one side of the inner metal ring;

FIG. 5 is a schematic structural view of the embodiment of FIG. 3 showing a view from one side of the outer ring of the carbon-ceramic composite material of the brake disc of the present application;

FIG. 6 is a schematic cross-sectional view of the brake disc of the present application at the A-A position in the embodiment of FIG. 2;

FIG. 7 is a schematic view of the structure of a view from one side of the metal inner ring of the brake disc according to the present application in one possible embodiment;

FIG. 8 is a schematic structural view of a side view of an outer ring of a carbon-ceramic composite material of a brake disc according to one possible embodiment of the present application;

FIG. 9 is a schematic view of the structure of a view from one side of the metal inner ring of the brake disc according to the present application in one possible embodiment;

FIG. 10 is a schematic view of the structure of a view from one side of the metal inner ring of the brake disc according to the present application in one possible embodiment;

FIG. 11 is a schematic view of the structure of a view from one side of the metal inner ring of the brake disc according to the present application in one possible embodiment;

FIG. 12 is a schematic view of a brake disc of the present application from a side view in one embodiment;

FIG. 13 is a schematic cross-sectional view of the embodiment of FIG. 12 from the side view of the brake disc of the present application at position B-B.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the application. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the application may be practiced. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. Directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., in the present application are merely referring to the directions of the attached drawings, and thus, directional terms are used for better, more clear explanation and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprises," "comprising," "includes," "including," or "having," when used in this specification, are intended to specify the presence of stated features, operations, elements, etc., but do not limit the presence of one or more other features, operations, elements, etc., but are not limited to other features, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, and that there is no intention to exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, 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 in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Referring to fig. 1, fig. 1 is a schematic view of a working scenario of a brake disc 100 according to the present application. As shown in fig. 1, the present application provides a brake disc 100 for cooperating with a brake caliper 101 to perform the braking function of an automobile.

Specifically, as shown in fig. 1, the brake disc 100 is fixedly connected to a hub (not shown) of a vehicle wheel and rotates in synchronization with the vehicle wheel. The brake disc 100 includes a first surface 100a and a second surface 100b opposite to each other along the thickness direction of the brake disc 100, the number of the brake calipers 101 may be two, the two brake calipers 101 are respectively located at two opposite sides of the brake disc 100 along the thickness direction of the brake disc 100, and one brake caliper 101 is disposed corresponding to the first surface 100a, and the other brake caliper 101 is disposed opposite to the second surface 100 b.

When the automobile is normally running, the two brake calipers 101 are far away from the brake disc 100 along the thickness direction of the brake disc 100 and form a certain distance with the first surface 100a and the second surface 100b respectively so as to ensure the normal running of the wheels.

When the automobile performs a braking function, the two brake calipers 101 move along the thickness direction of the brake disc 100 towards the direction close to each other and form a butt against the first surface 100a and the second surface 100b of the brake disc 100, namely, the effect that the brake calipers 101 hold the brake disc 100 is formed, so that friction force can be generated between the brake disc 100 and the two brake calipers 101 to reduce the rotating speed of the brake disc 100, and the rotating speed of wheels is reduced by the driving of the brake disc 100, so that the braking function of the automobile is realized.

It should be noted that in the embodiment shown in fig. 1, only one possible embodiment of the brake caliper 101 is illustrated as an example, and the actual structure and arrangement position of the brake caliper 101 are not limited. In other embodiments of the present application, the actual structure and layout position of the brake caliper 101 can be adjusted according to the actual design requirements, which is not particularly limited in the present application.

Meanwhile, the first surface 100a and the second surface 100b of the brake disc 100 are configured as two friction surfaces of the brake disc 100 to perform the function of abutting and generating friction between the brake disc 100 and the brake caliper 101. That is, in the following description of the embodiments, the "first surface 100a" and the "second surface 100b" may be understood as both friction surfaces of the brake disc 100.

Referring to fig. 2 and fig. 3 together, fig. 2 is a schematic structural view of one side of the brake disc 100 according to the present application in the embodiment shown in fig. 1, and fig. 3 is a schematic structural view of the other side of the brake disc 100 according to the present application in the embodiment shown in fig. 1. As shown in fig. 2, the brake disc 100 includes an outer carbon-ceramic composite ring 20 and an inner metal ring 10, and the outer carbon-ceramic composite ring 20 is sleeved on the outer periphery of the inner metal ring 10.

Specifically, the metal inner ring 10 is fixedly connected with a wheel hub, so that the brake disc 100 can realize synchronous rotation with the wheel, and the wheel can be driven to decelerate to realize braking when the brake caliper 101 holds the brake disc 100 tightly.

The outer periphery of the metal inner ring 10 is fixedly connected with the inner periphery of the carbon ceramic composite outer ring 20. The two opposite surfaces of the outer ring 20 of the carbon-ceramic composite material are respectively configured as a first surface 100a and a second surface 100b of the brake disc 100, that is, two friction surfaces of the brake disc 100, so that the brake caliper 101 can form a contact with and generate a friction effect with the two surfaces of the outer ring 20 of the carbon-ceramic composite material during braking.

In other words, when the automobile starts to brake, the brake caliper 101 abuts against two surfaces opposite to the outer ring 20 of the carbon-ceramic composite material and generates friction force to reduce the overall rotation speed of the brake disc 100, and the inner ring 10 drives the wheels to synchronously reduce the speed, so that the braking function of the brake disc 100 is realized.

Further, the metal inner ring 10 is made of metal. It can be appreciated that the metal inner ring 10 is made of metal, so that the metal inner ring 10 can form a good installation effect and a good matching effect with the wheel hub, and the matching degree between the metal inner ring 10 and the wheel hub is improved.

Meanwhile, the metal material has good heat conduction performance, the metal inner ring 10 has the advantages of low density and excellent heat conduction performance by arranging the metal inner ring 10 of the metal, and the metal inner ring 10 has good heat conduction performance and can reduce the overall quality of the brake disc 100 by arranging the metal inner ring 10 of the metal, so that the use effect of the brake disc 100 is improved.

For example, in one possible embodiment, the material of the metal inner ring 10 includes, but is not limited to, at least one of 6-series aluminum of aluminum-magnesium alloy, 7-series aluminum of al—zn—mgcu alloy, and gray cast iron.

It can be appreciated that the aluminum alloy material has the advantages of small density, small thermal expansion coefficient, good heat conduction performance and high wear resistance, and the material of the metal inner ring 10 can be aluminum alloy, so that the weight of the brake disc 100 can be reduced, the temperature of the brake disc 100 during braking can be reduced, the situation that the metal inner ring 10 is excessively deformed due to thermal expansion during braking and the carbon ceramic composite outer ring 20 forms mutual extrusion can be avoided, and further the working stability, the working effect and the service life of the whole brake disc 100 can be improved.

The main body of the outer ring 20 is made of carbon-ceramic composite material. The carbon-ceramic composite material has the advantages of low density, high temperature resistance, wear resistance and high stability, and the material of the outer ring 20 made of the carbon-ceramic composite material can ensure the wear resistance and the high temperature resistance of the brake disc 100, so that the use effect and the stability of the brake disc 100 are improved.

Referring to fig. 3 to 5, fig. 4 is a schematic structural view of the inner metal ring 10 of the brake disc 100 according to the embodiment shown in fig. 3, and fig. 5 is a schematic structural view of the outer carbon ceramic composite ring 20 of the brake disc 100 according to the embodiment shown in fig. 3. As shown in fig. 3 and 4, the metal inner ring 10 is provided with a first flange 11, the first flange 11 being located on the side of the outer peripheral surface 12 of the metal inner ring 10 near the first surface 100a, the first flange 11 having a first positioning surface 111 facing away from the first surface 100 a.

Wherein, along the thickness direction of the brake disc 100, the thickness of the first flange 11 is smaller than the thickness of the metal inner ring 10.

The first flange 11 is convexly arranged on one side, close to the first surface 100a, of the outer peripheral surface 12 of the metal inner ring 10, and the thickness of the first flange 11 is smaller than that of the metal inner ring 10, so that the outer peripheral surface 12 of the metal inner ring 10 forms a step-shaped structure, and the matching installation of the following carbon ceramic composite outer ring 20 is facilitated.

In the present specification, the term "in the thickness direction of the brake disc 100" is understood to mean the direction of the axial direction of the brake disc 100, and the term "thickness of the brake disc 100" is correspondingly understood to mean the dimension of the distance between the opposite surfaces of the brake disc 100 in the axial direction of the brake disc 100.

Similarly, the "thickness of the first flange 11" in the present specification is to be understood as a dimension of a distance between two opposite surfaces of the first flange 11 in the axial direction of the brake disc 100, which is simply referred to as "thickness of the first flange 11" in the present specification.

I.e. the "thickness" in the present description is to be understood as the dimension of the distance between the opposite surfaces of the functional structure in the axial direction of the brake disc 100.

In one embodiment, a first width W1 is provided between an outer end surface of the first flange 11 in the radial direction of the brake disc 100 and the outer circumferential surface 12 of the metal inner ring 10 in the radial direction of the brake disc 100. Wherein the first width W1 is 5-10 mm.

In one embodiment, the second width W2 is provided between the outer circumferential surface 12 of the metal inner ring 10 and the inner circumferential surface of the metal inner ring 10 in the radial direction of the brake disc 100. Wherein the second width W2 is 5-20 mm.

As shown in fig. 3 and 5, the outer carbon ceramic composite ring 20 is convexly provided with a second flange 22, the second flange 22 is located on a side of the inner circumferential surface 21 of the outer carbon ceramic composite ring 20 close to the second surface 100b, that is, the second flange 22 is located on a side of the inner circumferential surface 21 of the outer carbon ceramic composite ring 20 away from the first surface 100a, and the second flange 22 has a second positioning surface 222 facing away from the second surface 100 b.

Wherein, along the thickness direction of the brake disc 100, the thickness of the second flange 22 is smaller than the thickness of the carbon-ceramic composite outer ring 20.

By providing the second flange 22 on the side of the inner peripheral surface 21 of the outer carbon ceramic composite ring 20 away from the first surface 100a, and providing the thickness of the second flange 22 to be smaller than the thickness of the outer carbon ceramic composite ring 20, the inner peripheral surface 21 of the outer carbon ceramic composite ring 20 can form a stepped structure corresponding to the outer peripheral surface 12 of the inner metal ring 10, so that the outer carbon ceramic composite ring 20 can be sleeved on the inner metal ring 10, and the effect of mutually fitting and mounting the outer carbon ceramic composite ring 20 and the inner metal ring 10 is achieved.

In one embodiment, the metal inner ring 10 has a first volume, the carbon ceramic composite outer ring 20 has a second volume, the first volume is less than the second volume, and the ratio between the first volume and the second volume is 0.15 to 0.3.

The ratio between the first volume and the second volume is set to be 0.15-0.3, so that the ratio of the volume of the metal inner ring 10 in the brake disc 100 is limited, the phenomenon that the carbon ceramic composite outer ring 20 is possibly cracked due to extrusion of the carbon ceramic composite outer ring 20 caused by overlarge volume expansion change of the heated metal inner ring 10 due to overlarge volume ratio of the metal inner ring 10 is avoided, namely, the working performance and the working effect of the brake disc 100 can be further ensured by setting the ratio between the first volume and the second volume to be 0.15-0.3.

The metal inner ring 10 is made of aluminum alloy, the carbon ceramic composite outer ring 20 is made of carbon ceramic composite, the thermal expansion coefficients of the metal inner ring 10 and the carbon ceramic composite outer ring 20 are different, the metal inner ring 10 is heated and expanded to squeeze the carbon ceramic composite outer ring 20, and adverse phenomena which lead to cracking or cracking of the carbon ceramic composite outer ring 20 can occur, so that the structural strength and structural stability of the carbon ceramic composite outer ring 20 are affected.

By setting the ratio between the first volume of the metal inner ring 10 and the second volume of the carbon ceramic composite outer ring 20 to be 0.15-0.3, the influence of the thermal expansion of the metal inner ring 10 on the carbon ceramic composite outer ring 20 can be reduced, and the structural strength and structural stability of the carbon ceramic composite outer ring 20 can be improved.

In one embodiment, a gap is left between the outer circumferential surface 12 of the metal inner ring 10 and the inner end surface of the second flange 22 in the radial direction of the brake disc 100.

It can be appreciated that, by providing a gap between the outer circumferential surface of the metal inner ring 10 and the inner end surface of the second flange 22 along the radial direction of the brake disc 100, it is possible to avoid the metal inner ring 10 and the carbon ceramic composite outer ring 20 from being mutually extruded due to different deformation after being heated caused by different expansion coefficients, so that adverse phenomena such as cracks and the like may occur in the metal inner ring 10 or the carbon ceramic composite outer ring 20.

In one embodiment, the clearance between the outer peripheral surface 12 of the metal inner ring 10 and the inner end surface of the second flange 22 in the radial direction of the brake disc 100 is greater than or equal to 3mm.

In one embodiment, a gap is left between the radially outer end surface of the first flange 11 in the radial direction of the brake disc 100 and the inner peripheral surface 21 of the carbon-ceramic composite outer ring 20.

By providing the first flange 11 with a gap between the outer end surface along the radial direction of the brake disc 100 and the inner circumferential surface 21 of the outer carbon ceramic composite ring 20, the metal inner ring 10 and the outer carbon ceramic composite ring 20 can be prevented from being mutually extruded due to different deformation after being heated caused by different expansion coefficients, and thus adverse phenomena such as cracks and the like of the metal inner ring 10 or the outer carbon ceramic composite ring 20 can be avoided.

In one embodiment, the clearance between the radially outer end surface of the first flange 11 in the brake disc 100 and the inner peripheral surface 21 of the carbon-ceramic composite outer ring 20 is 3mm or more.

Further, referring to fig. 6, fig. 6 is a schematic cross-sectional view of the brake disc 100 of the embodiment of fig. 2 at A-A position. As shown in fig. 6, when the outer ring 20 of the carbon ceramic composite material is sleeved on the inner ring 10, the second positioning surface 222 of the outer ring 20 of the carbon ceramic composite material is mutually adhered and fixed with the first positioning surface 111 of the inner ring 10 of the metal, so as to achieve the effect of fixing the inner ring 10 of the metal on the outer ring 20 of the carbon ceramic composite material.

That is, as shown in fig. 6, the first flange 11 and the second flange 22 are located on opposite sides with respect to the outer peripheral surface 12 of the metal inner ring 10, respectively, in the thickness direction of the brake disc 100, so as to form a stepped structure that fits with each other on the outer peripheral surface 12 of the metal inner ring 10 and the inner peripheral surface 21 of the carbon-ceramic composite outer ring 20, thereby enabling the first positioning surface 111 of the first flange 11 and the second positioning surface 222 of the second flange 22 to fit with each other.

Specifically, the brake disc 100 includes a plurality of fixing members 30, the plurality of fixing members 30 being arranged at intervals along the circumferential direction of the outer race 20 of the carbon-ceramic composite material, each fixing member 30 penetrating through the second flange 22 in the thickness direction of the brake disc 100 and being fixed to the first flange 11.

In the embodiment shown in fig. 6, the second flange 22 is provided with a plurality of through holes 221, the plurality of through holes 221 are arranged at intervals along the circumferential direction of the carbon-ceramic composite outer ring 20, and each through hole 221 penetrates the second flange 22 in the thickness direction of the brake disc 100.

The first positioning surface 111 of the first flange 11 is provided with a plurality of mounting holes 112, each mounting hole 112 extending in the thickness direction of the brake disc 100, and each mounting hole 112 being arranged corresponding to the position of one through hole 221.

The mounting hole 112 formed in the first flange 11 may or may not extend through the first flange 11 in the thickness direction of the brake disc 100, and the present application is not limited thereto. The extension length of the mounting hole 112 in the thickness direction of the brake disc 100 may be sufficient for positioning and fixing the fixing member 30.

The fixing member 30 passes through the through hole 221 and protrudes into the mounting hole 112 to achieve a fixed connection between the first positioning surface 111 and the second positioning surface 222. The fixing member 30 may be a screw or other structural member capable of achieving a fixed connection between the first flange 11 and the second flange 22.

By providing each fixing member 30 penetrating the second flange 22 in the thickness direction of the brake disc 100 and being fixed to the first flange 11, the first positioning surface 111 and the second positioning surface 222 can be mutually bonded and fixed, and the effect of mutually fixing the metal inner ring 10 and the carbon ceramic composite outer ring 20 can be further obtained. And the fixing effect between the metal inner ring 10 and the carbon ceramic composite outer ring 20 can be achieved through the fixing piece 30, the installation convenience between the metal inner ring 10 and the carbon ceramic composite outer ring 20 is improved, the matching precision between the metal inner ring 10 and the carbon ceramic composite outer ring 20 can be ensured, and the product yield of the brake disc 100 is improved.

Meanwhile, the number of the fixing pieces 30 is multiple, so that the connection strength of the metal inner ring 10 and the carbon-ceramic composite outer ring 20 can be improved, and the working stability and the working effect of the brake disc 100 can be further improved. And a plurality of mounting 30 evenly arrange along the circumference of carbon-ceramic combined material outer loop 20 for brake disc 100 whole atress is even, and then can improve brake disc 100 structural strength and structural stability.

In the embodiment shown in fig. 6, only one possible embodiment in which the first positioning surface 111 and the second positioning surface 222 are fixedly connected is described as an example, but the method of fixedly connecting the first positioning surface 111 and the second positioning surface 222 of the present application is not limited thereto.

In other embodiments of the present application, the first positioning surface 111 and the second positioning surface 222 may be fixedly connected by other process means, so as to fix the metal inner ring 10 and the carbon-ceramic composite outer ring 20 to each other, which is not particularly limited in the present application.

One embodiment, please continue to refer to fig. 6. As shown in fig. 6, the thickness of the outer ring 20 of the carbon-ceramic composite material is greater than that of the inner ring 10, and the inner ring 10 includes a first end face 10a and a second end face 10b opposite to each other in the thickness direction thereof, the first end face 10a being closer to the first surface 100a than the second end face 10 b. I.e. the first end face 10a is located on the side close to the first surface 100a and the second end face 10b is located on the side close to the second surface 100 b.

As shown in fig. 6, a first distance H1 is provided between the first end face 10a and the first surface 100a of the metal inner ring 10 and a second distance H2 is provided between the second end face 10b and the second surface 100b of the metal inner ring 10 in the thickness direction of the brake disc 100 itself, that is, in the axial direction of the metal inner ring 10. Wherein the first distance H1 is equal to the second distance H2.

Through setting the thickness of the carbon ceramic composite outer ring 20 to be greater than the thickness of the metal inner ring 10, and setting the interval distance between the first end face 10a and the first surface 100a and the interval distance between the second end face 10b and the second surface 100b, a certain interval distance can be ensured to be formed between the metal inner ring 10 and the first surface 100a and the second surface 100b of the brake disc 100 respectively, so that the influence of a large amount of heat generated on the first surface 100a and the second surface 100b on the metal inner ring 10 during braking of the brake disc 100 is reduced, and the influence on the working stability caused by the fact that the metal inner ring 10 is heated too fast is avoided.

In other words, by setting the first distance H1 and the second distance H2 such that the first end face 10a and the second end face 10b of the metal inner ring 10 facing away from each other are not directly connected or contacted with the first surface 100a and the second surface 100b for friction, the influence of heat generated by friction of the carbon ceramic composite outer ring 20 on the metal inner ring 10 is reduced.

Meanwhile, the first distance H1 and the second distance H2 are equal, so that heat generated by friction of the brake disc 100 can be uniformly transferred to the metal inner ring 10 from two opposite surfaces of the carbon-ceramic composite outer ring 20, the first end face 10a and the second end face 10b of the metal inner ring 10 opposite to each other can uniformly and synchronously receive heat transfer, and different deformation of the metal inner ring 10 at different positions due to uneven heating is avoided, so that adverse effects are generated on the overall working stability and the working effect of the brake disc 100.

In one embodiment, as shown in fig. 6, the distance between the first end surface 10a and the first surface 100a is 22-42 mm.

In one embodiment, as shown in fig. 6, the distance between the second end surface 10b and the second surface 100b is 22-42 mm.

Referring to fig. 7 and 8 together, fig. 7 is a schematic structural view of a side view of the metal inner ring 10 of the brake disc 100 according to one possible embodiment, and fig. 8 is a schematic structural view of a side view of the carbon ceramic composite outer ring 20 of the brake disc 100 according to one possible embodiment. As shown in fig. 7, a plurality of protruding strips 13 are provided protruding from the first positioning surface 111 of the first flange 11. Each of the protruding strips 13 extends in the radial direction of the metal inner ring 10 and is connected to the outer peripheral surface 12 of the metal inner ring 10, and the plurality of protruding strips 13 are arranged at intervals in the circumferential direction of the metal inner ring 10.

In the embodiment shown in fig. 7, the number of protruding ribs 13 protruding on the first positioning surface 111 is the same as the number of mounting holes 112 formed on the first flange 11, and the plurality of protruding ribs 13 and the plurality of mounting holes 112 are alternately arranged in sequence at intervals.

In the embodiment shown in fig. 7, only one possible arrangement and one possible arrangement of the plurality of protruding strips 13 are exemplified, but the number and arrangement of the protruding strips 13 in the present application are not limited thereto. In other embodiments of the present application, the number and arrangement of the protruding strips 13 can be adjusted according to the actual design requirement, which is not particularly limited in the present application.

As shown in fig. 8, a plurality of grooves 23 are formed in the second positioning surface 222 of the second flange 22 of the outer ring 20 of the carbon ceramic composite material, corresponding to the plurality of protruding strips 13 on the first positioning surface 111 of the first flange 11.

In the embodiment shown in fig. 8, the plurality of grooves 23 are disposed in one-to-one correspondence with the plurality of convex strips 13. Each protruding strip 13 is respectively embedded into one corresponding groove 23, and the width of the protruding strip 13 along the circumferential direction of the metal inner ring 10 is equal to the width of the groove 23.

It can be understood that, by convexly providing the protruding strips 13 on the first positioning surface 111, providing the grooves 23 at the positions of the second positioning surface 222 corresponding to the protruding strips 13, and arranging each protruding strip 13 to be respectively embedded into one groove 23, the attaching area between the first positioning surface 111 and the second positioning surface 222 can be increased, and further, the connection stability of the metal inner ring 10 and the carbon ceramic composite outer ring 20 can be improved.

Meanwhile, by the cooperation between the protruding strips 13 and the grooves 23, the protruding strips 13 can share the shearing force carried by part of the fixing piece 30, so as to improve the structural strength and structural stability of the brake disc 100.

Through setting up the width of the circumference sand grip 13 along metal inner ring 10 and the width of recess 23 equal, can inject the displacement of sand grip 13 along metal inner ring circumference in recess 23, and then can bear the shearing force with guaranteeing sand grip 13 to further improve the structural strength of brake disc 100.

In one embodiment, the dimension of the protruding strip 13 in the thickness direction of the brake disc 100 is 1 to 10mm.

In one embodiment, a gap is left between the inner surface of the groove 23 and the outer surface of the protrusion 13 in the radial direction of the brake disc 100 to prevent the protrusion 13 and the groove 23 from being pressed against each other due to thermal expansion.

By arranging the gaps between the inner surfaces of the grooves 23 and the outer surfaces of the raised strips 13, the phenomenon that the raised strips 13 and the grooves 23 are mutually extruded due to different deformation after being heated caused by different expansion coefficients can be avoided, and therefore, the metal inner ring 10 or the carbon ceramic composite outer ring 20 can possibly have bad phenomena such as cracks and the like.

Referring to fig. 9, fig. 9 is a schematic structural view of a side view of a metal inner ring 10 of a brake disc 100 according to one possible embodiment of the present application. As shown in fig. 9, each of the protruding strips 13 has an extension 131, and the extension 131 is attached to the outer peripheral surface 12 of the metal inner ring 10 and extends in the thickness direction of the brake disc 100 in a direction away from the second flange 22.

That is, as shown in fig. 9, the protruding strip 13 protrudes from the first positioning surface 111 and extends to be connected to the outer peripheral surface 12 of the metal inner ring 10.

In the embodiment shown in fig. 9, the extension 131 extends to be connected to the outer peripheral surface 12 of the metal inner ring 10 and extends to the second end surface 10b of the metal inner ring 10 in the axial direction of the metal inner ring 10.

By providing the extension 131 extending to the second end face 10b of the metal inner ring 10 in the axial direction of the metal inner ring 10, the capability of the raised strips 13 to bear shear force can be further improved, so as to further improve the structural strength of the connection strength between the metal inner ring 10 and the carbon-ceramic composite outer ring 20 of the brake disc 100.

Referring to fig. 10 and 11 together, fig. 10 is a schematic structural view of a side view of a metal inner ring 10 of a brake disc 100 according to one possible embodiment, and fig. 11 is a schematic structural view of a side view of a carbon ceramic composite outer ring 20 of the brake disc 100 according to one possible embodiment. As shown in fig. 10, the sum of the height dimension of the protruding strip 13 with respect to the first positioning surface 111 and the thickness dimension of the first flange 11 is equal to the thickness dimension of the metal inner ring 10.

Specifically, in the embodiment shown in fig. 10, the sum of the height dimension of the protruding strip 13 with respect to the first positioning surface 111 and the thickness dimension of the first flange 11 at each position in the thickness direction of the brake disc 100 is equal to the thickness dimension of the metal inner ring 10.

The sum of the height dimension of the raised strips 13 relative to the first positioning surface 111 and the thickness dimension of the first flange 11 is equal to the thickness dimension of the metal inner ring 10, so that the shearing force bearing area of the raised strips 13 is increased, the structural strength of the brake disc 100 is further improved, and the working stability of the brake disc 100 is ensured.

As shown in fig. 11, the grooves 23 penetrate the second flange 22 along the thickness direction of the outer ring 20 of the carbon ceramic composite material, so that the protruding strips 13 can be embedded into the grooves 23, thereby improving the fixing connection effect between the inner metal ring 10 and the outer ring 20 of the carbon ceramic composite material, and improving the structural strength of the brake disc 100.

In other words, by providing the groove 23 penetrating the second flange 22 in the thickness direction of the outer ring 20 of the carbon ceramic composite material, the processing and manufacturing of the groove 23 can be facilitated while improving the mating effect between the groove 23 and the protruding strip 13, so as to further simplify the manufacturing process of the brake disc 100 of the present application.

In the embodiment shown in fig. 7 to 10, the convex strip 13 is provided on the metal inner ring 10 and the groove 23 is provided on the carbon ceramic composite outer ring 20 by way of example only, but the convex strip 13 is not limited to be provided on the metal inner ring 10, and the groove 23 is provided on the groove 23. In other embodiments of the present application, the arrangement positions of the protruding strips 13 and the recessed grooves 23 can be adjusted according to the actual design requirements, which is not particularly limited in the present application.

For example, in one embodiment, the second positioning surface 222 is convexly provided with a plurality of ribs 13, each rib 13 extends along the radial direction of the outer carbon-ceramic composite ring 20 and is connected to the inner peripheral surface 21 of the outer carbon-ceramic composite ring 20, and the plurality of ribs 13 are arranged along the circumferential direction of the outer carbon-ceramic composite ring 20. Meanwhile, the first positioning surface 111 is provided with a plurality of grooves 23, the grooves 23 are arranged in one-to-one correspondence with the plurality of raised strips 13, each raised strip 13 is embedded into one groove 23, and the width of the circumferential raised strip 13 along the outer ring 20 of the carbon ceramic composite material is equal to the width of the groove 23.

Referring to fig. 12 and 13 together, fig. 12 is a schematic structural view of a side view of a brake disc 100 according to an embodiment of the present application, and fig. 13 is a schematic sectional structural view of a side view of a brake disc 100 according to an embodiment of the present application at a B-B position in fig. 12. As shown in fig. 12, the brake disc 100 is provided with a plurality of heat dissipation holes 40, each heat dissipation hole 40 extends along the radial direction of the brake disc 100, and the plurality of heat dissipation holes 40 are distributed at intervals along the circumferential direction of the brake disc 100, and opposite ends of each heat dissipation hole 40 respectively penetrate through the carbon-ceramic composite outer ring 20 and the metal inner ring 10.

Specifically, as shown in fig. 13, the heat dissipation holes 40 include a plurality of sub heat dissipation holes 41 and a plurality of heat dissipation channels 42, the sub heat dissipation holes 41 are formed on the metal inner ring 10, the heat dissipation channels 42 are formed on the carbon-ceramic composite outer ring 20, and the plurality of sub heat dissipation holes 41 and the plurality of heat dissipation channels 42 are arranged in one-to-one correspondence.

In the embodiment shown in fig. 13, each sub-heat-radiating hole 41 penetrates the inner peripheral surface of the metal inner ring 10 and the outer peripheral surface 12 of the metal inner ring 10 in the radial direction of the brake disc 100, respectively. Each of the heat dissipation passages 42 penetrates the inner peripheral surface 21 of the carbon ceramic composite outer ring 20 and the outer peripheral surface of the carbon ceramic composite outer ring 20, respectively, in the radial direction of the carbon ceramic composite outer ring 20. Wherein each sub-heat dissipation hole 41 and its corresponding heat dissipation channel 42 are jointly configured as one heat dissipation hole 40.

As shown in fig. 13, the cross-sectional shape of each heat dissipation channel 42 is fan-shaped in the thickness direction of the brake disc 100, and the opening area of each heat dissipation channel 42 near the sub-heat dissipation holes 41 is smaller than the opening area of each heat dissipation channel 42 near the outer peripheral surface of the carbon-ceramic composite outer ring 20.

By arranging the heat dissipation channel 42 with a fan-shaped cross section, the air flow rate in the heat dissipation channel 42 of the brake disc 100 in the rotation process can be improved, and the heat dissipation effect of the brake disc 100 can be improved.

In one embodiment, the opening area of each heat dissipation channel 42 near the corresponding sub heat dissipation hole 41 is greater than or equal to the opening area of the corresponding sub heat dissipation hole 41, so as to ensure that the heat in the sub heat dissipation hole 41 can be transferred into the corresponding heat dissipation channel 42, and improve the heat transfer effect on the metal inner ring 10.

It can be appreciated that by arranging the heat dissipation holes 40, and arranging opposite ends of each heat dissipation hole 40 to penetrate through the outer ring 20 and the inner metal ring 10 of the carbon-ceramic composite material, heat transferred to the inner metal ring 10 can be transferred out of the brake disc 100 from the heat dissipation holes 40, so that the heat dissipation effect of the brake disc can be improved, and the influence on the structural performance of the brake disc 100 caused by incapability of heat dissipation due to heat aggregation is avoided.

In the embodiment shown in fig. 12 and 13, only one structural shape, arrangement position, and arrangement number of the heat radiation holes 40 are exemplified, but the structural shape, arrangement position, and arrangement number of the heat radiation holes 40 are not limited thereto. In other embodiments of the present application, the structural shape, arrangement position and arrangement number of the heat dissipation holes 40 can be adjusted according to design requirements, which is not particularly limited in the present application.

For example, in one embodiment, the heat dissipation channel 42 may also have a linear, arcuate, wavy shape along the radial direction of the brake disc 100.

When the brake disc 100 is manufactured, the C/C preform can be obtained by adopting the process technologies of laminated needling, carbonization, chemical vapor deposition and the like, and then the required contour shape is processed in the preform. And then carrying out high-temperature treatment on the prefabricated body with the required contour shape to obtain a high-temperature treated blank body, and carrying out heat preservation on the obtained high-temperature treated blank body, wherein the heat preservation time is longer than or equal to 2 hours. Wherein the temperature of the high-temperature treatment is more than or equal to 2000 ℃.

And (3) treating the blank at high temperature by a liquid phase siliconizing process to obtain the carbon ceramic brake disc blank. Wherein the siliconizing temperature is more than or equal to 1700 ℃. And preserving the heat of the obtained carbon ceramic brake disc blank for more than or equal to 3 hours.

The carbon-ceramic brake disc blank is subjected to surface processing to obtain a carbon-ceramic composite outer ring 20 made of carbon-ceramic composite. And the machined carbon ceramic composite outer ring 20 is assembled with the metal inner ring 10 to collectively construct the brake disc 100.

In general, a brake disc manufactured by adopting an integral manufacturing mode is generally directly manufactured between a carbon ceramic composite outer ring and a metal inner ring, wherein the carbon ceramic composite outer ring and the metal inner ring are made of metal materials, and the manufacturing process is complex, the production period is long and the manufacturing cost is high. Meanwhile, the outer ring of the carbon-ceramic composite material made of the carbon-ceramic composite material and the inner ring of the metal material are integrally manufactured, so that the inner structure of the brake disc is complex, the structural strength of the brake disc is difficult to ensure, and the working stability of the brake disc is reduced.

The brake disc 100 of the present application prepares the outer ring 20 of the carbon ceramic composite material and the inner ring 10 of the metal, and the first flange 11 is disposed on the outer circumferential surface 12 of the inner ring 10 of the metal, and the second flange 22 is disposed on the inner circumferential surface 21 of the outer ring 20 of the carbon ceramic composite material, so that the first positioning surface 111 of the first flange 11 and the second positioning surface 222 of the second flange 22 can be mutually attached and fixed, thereby forming the mutual fixing effect of the inner ring 10 of the metal and the outer ring 20 of the carbon ceramic composite material, avoiding the defect that the inner ring 10 of the metal and the outer ring 20 of the carbon ceramic composite material rotate with each other when the brake disc 100 realizes the braking function, so as to ensure the structural strength of the brake disc 100, and further ensure the working stability and the braking effect of the brake disc 100.

Meanwhile, the first flange 11 is arranged on the outer peripheral surface 12 of the metal inner ring 10, and the second flange 22 is arranged on the inner peripheral surface 21 of the carbon ceramic composite outer ring 20, so that the structure of the first flange 11 and the structure of the second flange 22 can form an effect of mutual matching, the internal structure of the brake disc 100 is simplified, the manufacturing process for manufacturing the brake disc 100 is simplified, and the manufacturing difficulty for manufacturing the brake disc 100 is reduced.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the application is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims. Those skilled in the art will recognize that the full or partial flow of the embodiments described above can be practiced and equivalent variations of the embodiments of the present application are within the scope of the appended claims.

Claims (16)

1. The brake disc is characterized by comprising a metal inner ring and a carbon-ceramic composite outer ring, wherein the outer periphery of the metal inner ring is fixedly connected with the inner periphery of the carbon-ceramic composite outer ring;

The brake disc comprises a first surface and a second surface which are opposite to each other along the thickness direction of the brake disc, a first flange is arranged on the outer circumferential surface of the metal inner ring, the thickness of the first flange is smaller than that of the metal inner ring, and the first flange is provided with a first positioning surface which is away from the first surface;

The inner peripheral surface of the carbon ceramic composite outer ring is provided with a second flange, the thickness of the second flange is smaller than that of the carbon ceramic composite outer ring, and the second flange is provided with a second positioning surface deviating from the second surface;

The first positioning surface is attached to and fixed with the second positioning surface, so that the metal inner ring is fixedly connected with the carbon ceramic composite outer ring.

2. The brake disc of claim 1, wherein the thickness of the outer carbon-ceramic composite ring is greater than the thickness of the inner metal ring, the opposite surfaces of the outer carbon-ceramic composite ring being configured as the first and second surfaces of the brake disc, respectively;

The metal inner ring comprises a first end face and a second end face which are opposite to each other along the thickness direction of the metal inner ring, and the distance between the first end face and the first surface is equal to the distance between the second end face and the second surface.

3. The brake disc of claim 2, wherein the distance between the first end face and the first surface is 22-42 mm and the distance between the second end face and the second surface is 22-42 mm in the thickness direction of the brake disc.

4. The brake disc of claim 1, wherein the brake disc includes a plurality of fixing members arranged at intervals along a circumferential direction of the brake disc, each of the fixing members penetrating through the second flange and being fixed to the first flange in a thickness direction of the brake disc, respectively.

5. The brake disc according to claim 1, wherein the first positioning surface is provided with a plurality of protruding strips, each protruding strip extends in a radial direction of the metal inner ring and is connected to the outer peripheral surface of the metal inner ring, and the plurality of protruding strips are arranged at intervals in a circumferential direction of the metal inner ring; the second positioning surface is provided with a plurality of grooves, and the grooves are arranged in one-to-one correspondence with the convex strips;

Each raised strip is embedded into one groove, and the width of the raised strip is equal to the width of the groove along the circumferential direction of the inner ring.

6. The brake disc of claim 5, wherein the dimension of the rib in the thickness direction of the brake disc is 1 to 10mm.

7. The brake disc according to claim 5, wherein each of the projecting strips has an extension portion that is fitted to an outer peripheral surface of the metal inner ring and extends in a thickness direction of the brake disc toward a direction away from the second flange.

8. The brake disc of claim 5, wherein a sum of a height dimension of the rib relative to the first locating surface and a thickness dimension of the first flange is equal to a thickness dimension of the metal inner ring; and/or the number of the groups of groups,

The groove penetrates through the second flange along the thickness direction of the outer ring of the carbon-ceramic composite material.

9. The brake disc of claim 5, wherein an inner surface of the groove has a gap from an outer surface of the rib in a radial direction of the brake disc.

10. Brake disc according to claim 9, characterized in that the gap has a width dimension in the radial direction of the brake disc of 5-20 mm.

11. Brake disc according to any one of claims 1-10, characterized in that a gap is left between the outer circumferential surface of the inner metal ring and the inner end surface of the second flange in the radial direction of the brake disc; and/or the number of the groups of groups,

And a gap is reserved between the outer end face of the first flange along the radial direction of the brake disc and the inner peripheral surface of the carbon-ceramic composite outer ring.

12. The brake disc according to claim 11, wherein a gap between the outer peripheral surface of the metal inner ring and an inner end surface of the second flange in a radial direction of the brake disc is greater than or equal to 3mm.

13. The brake disc according to claim 11, wherein a gap between an outer end surface of the first flange in a radial direction of the brake disc and the inner peripheral surface of the carbon-ceramic composite outer ring in the radial direction of the brake disc is 3mm or more.

14. The brake disc of claim 1, wherein the outer circumferential surface of the brake disc is provided with a plurality of heat dissipation holes, the plurality of heat dissipation holes being distributed at intervals along the circumferential direction of the brake disc, the heat dissipation holes penetrating through the carbon-ceramic composite outer ring and the metal inner ring in the radial direction of the brake disc.

15. The brake disc of claim 1, wherein the inner metal ring has a first volume and the outer carbon-ceramic composite ring has a second volume, the ratio between the first volume and the second volume being 0.15-0.3.

16. A brake disc according to claim 1, wherein the distance between the outer circumferential surface of the inner metal ring and the inner circumferential surface of the inner metal ring in the radial direction of the brake disc is 5-20 mm.