Automobile brake disc

Abstract

The invention discloses an automobile brake disc which comprises a disc body and a gooseneck protruding outwards from one side of the disc body, an annular groove is formed in the connecting position of the gooseneck and the disc body, the automobile brake disc further comprises an annular fin radiator arranged in the groove and a clamping spring arranged on one side of the annular fin radiator, and the annular fin radiator comprises a supporting seat and a plurality of layers of radiating fins which are arranged on the supporting seat and are concentrically distributed at intervals by taking the rotating axis of the disc body as the center. According to the automobile brake disc, the annular fin radiator is fixed in the groove formed in the connecting position of the gooseneck and the disc body through the clamping spring, heat generated by braking is guided out through the radiator by the disc body, and the situation that excessive heat is transmitted to a hub unit through the gooseneck, and the strength of a hub and the service life of peripheral plastic parts are affected is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of brake disc, in particular to an automobile brake disc. BACKGROUND

[0002] The automobile braking performance directly affects the driving safety of the automobile. The automobile brake is usually through the brake caliper to press the brake disc, and the braking force is generated by friction to make the tire decelerate and stop. In the prior art, if the heat cannot be dissipated in time during the braking process of the automobile brake disc after friction, the disc body temperature will be too high, and then the braking performance will be degraded (thermal decay), the disc body will be deformed, and even cracks will occur. The existing automobile brake disc adopts solid aluminum-based composite material. The solid disc body has no ventilation structure, so the heat dissipation effect is lower than that of the disc body with ventilation holes. The goose neck will transfer the heat that is not dissipated in time to the hub unit, which affects the strength of the hub and the service life of the surrounding plastic parts. The solid automobile brake disc in the prior art has poor heat dissipation effect. SUMMARY

[0003] In view of the defects in the prior art, the present application provides an automobile brake disc with good heat dissipation effect.

[0004] An automobile brake disc comprises a disc body and a goose neck protruding outward from one side of the disc body, an annular groove is formed at the connection between the goose neck and the disc body, the automobile brake disc further comprises an annular fin radiator arranged in the groove and a snap spring arranged on one side of the annular fin radiator, and the annular fin radiator comprises a support seat and a plurality of layers of heat dissipation fins arranged on the support seat in a concentric circle interval distribution centering on the disc body rotation axis.

[0005] In one embodiment, the distance between adjacent heat dissipation fins in the plurality of layers of heat dissipation fins gradually decreases in the radial direction away from the goose neck.

[0006] In one embodiment, the distance between the radially innermost heat dissipation fin and the support seat is 2mm-3mm, and the distance between the radially outermost heat dissipation fin and the support seat is 1mm-2mm.

[0007] In one embodiment, adjacent heat dissipation fins in the plurality of layers of heat dissipation fins are equidistantly arranged, and the distance between the adjacent heat dissipation fins is 1mm-2mm.

[0008] In one embodiment, the thickness of the heat dissipation fin is 0.1mm-0.5mm.

[0009] In one embodiment, the heat dissipation fin and the support seat are an integral structure.

[0010] In one of the embodiments, the annular fin heat sink further comprises connecting pieces arranged between adjacent heat dissipation fins, the plurality of connecting pieces being staggered between the plurality of layers of heat dissipation fins to form a three-dimensional network structure.

[0011] In one of the embodiments, the automobile brake disc further comprises a heat-conducting pad arranged between the support seat and the inner wall of the groove.

[0012] In one of the embodiments, the heat-conducting pad has a thickness of 0.5mm-2mm.

[0013] In one of the embodiments, the annular fin heat sink has a closed end close to the inner wall of the groove and an open end away from the inner wall of the groove.

[0014] The automobile brake disc described above has the annular fin heat sink fixed in the groove formed at the connection between the gooseneck and the disc body by the snap spring, and the heat generated by braking is conducted away by the disc through the heat sink, so that excessive heat is prevented from being transferred to the hub unit through the gooseneck, thereby affecting the strength of the hub and the service life of the surrounding plastic parts. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 Fig. 1 is a schematic diagram of the three-dimensional structure of the present application; Fig. 2 Fig. 2 is a schematic diagram of the exploded structure of the present application; Fig. 3 Fig. 3 is a schematic diagram of the cross-sectional structure of one embodiment of the present application; In the drawings: 1, disc body; 2, gooseneck; 3, heat-conducting pad; 4, annular fin heat sink; 5, snap spring; 6, heat dissipation fin; 7, disc cap; 8, support seat; 9, groove. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present application, the present application will be described more fully below, and preferred embodiments of the present application will be given. However, the present application can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0017] It should be noted that when an element is referred to as being "arranged" on another element, it can be directly on the other element or there can be an intervening element.

[0018] 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 the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0019] Reference Figs. 1 to 3 The automobile brake disc of one embodiment comprises a disc body 1 and a goose neck 2 protruding outward from one side of the disc body 1, and the connection between the goose neck 2 and the disc body 1 forms an annular groove 9. The automobile brake disc further comprises an annular fin heat sink 4 arranged in the groove 9 and a circlip 5 arranged on one side of the annular fin heat sink 4. The annular fin heat sink 4 comprises a support seat 8 and a plurality of layers of heat dissipation fins 6 arranged on the support seat 8. The heat dissipation fins 6 are arranged in concentric circles with the rotation axis of the disc body 1 as the center.

[0020] The heat generated by braking is transmitted from the disc body 1 to the plurality of layers of heat dissipation fins 6 through the support seat 8, and then dissipated to the air through heat exchange between the heat dissipation fins 6 and the air, thereby achieving the heat dissipation effect.

[0021] In the embodiment, in order to better achieve the heat dissipation effect, the distance between adjacent heat dissipation fins in the plurality of layers of heat dissipation fins 6 gradually decreases in the radial direction away from the goose neck 2, that is, the closer to the goose neck 2, the larger the distance, and the farther away from the goose neck 2, the smaller the distance. The distance between the innermost radial heat dissipation fin 6 and the support seat 8 is 2mm-3mm, and the distance between the outermost radial heat dissipation fin 6 and the support seat 8 is 1mm-2mm.

[0022] In other embodiments, the adjacent heat dissipation fins in the plurality of layers of heat dissipation fins can also be arranged at equal distances. Further, the distance between adjacent heat dissipation fins is 1mm-2mm.

[0023] Further, the thickness of the heat dissipation fin 6 is 0.1mm-0.5mm.

[0024] Further, the heat dissipation fin 6 and the support seat 8 are of an integrated structure to increase the structural strength and improve the heat conduction performance.

[0025] It should be noted that the shape of the support seat 8 matches the inner wall of the groove 9, so that the support seat 8 can be completely fitted with the inner wall of the groove 9, thereby improving the heat conduction effect.

[0026] Further, the annular fin heat sink 4 further comprises a connecting piece (not shown) arranged between adjacent heat dissipation fins. A plurality of connecting pieces are arranged between the plurality of layers of heat dissipation fins in a staggered manner, forming a three-dimensional mesh structure, which can prevent the fins from shaking and generating noise due to air flow during disc rotation, and also improve the structural strength.

[0027] In order to further improve the heat dissipation effect, the automobile brake disc further comprises a heat-conducting pad 3 arranged between the support seat 8 and the inner wall of the groove 9. Further, the thickness of the heat-conducting pad 3 is 0.5mm-2mm.

[0028] It should be noted that the finned radiator 4 is closed at one end close to the inner wall of the groove 9 and is open at the other end away from the inner wall of the groove 9, so as to better guide the heat generated by the disc into the air and achieve good heat dissipation effect.

[0029] The automobile brake disc has the ring-shaped finned radiator 4 in front, and the heat dissipation area at the groove 9 is about 307cm 2 After the ring-shaped finned radiator 4 is installed, the heat dissipation area can reach 1398cm 2 1886cm 2 It can be seen that by arranging the ring-shaped finned radiator 4 at the groove 9, the heat dissipation area can be greatly increased and the heat dissipation effect can be improved.

[0030] Further, in order to avoid increasing too much weight and affecting the lightweight effect, the heat-conducting pad 3, the ring-shaped finned radiator 4 and the snap spring 5 can be made of copper, aluminum, silver and other materials which have good heat conductivity and light weight.

[0031] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A brake disc for a vehicle comprising a disc body and a gooseneck projecting outwardly from one side of the disc body, the gooseneck and disc body meeting to form an annular recess, characterised in that, The automobile brake disc further comprises an annular fin heat sink arranged in the groove, and a clasp arranged on one side of the annular fin heat sink.

2. The automotive brake disc according to claim 1, characterized in that The distance between adjacent heat dissipation fins in the multilayer heat dissipation fins gradually decreases in the radial direction away from the swan neck.

3. The automotive brake disc of claim 2, wherein, The distance between the radially innermost heat dissipation fin and the support seat is 2-3 mm, and the distance between the radially outermost heat dissipation fin and the support seat is 1-2 mm.

4. The automotive brake disc of claim 1, wherein The adjacent heat dissipation fins in the multilayer heat dissipation fins are equidistantly arranged, and the distance between the adjacent heat dissipation fins is 1-2 mm.

5. The automotive brake disc according to claim 2 or 4, characterized in that The thickness of the heat dissipation fin is 0.1-0.5 mm.

6. The automotive brake disc of claim 1, wherein, The heat dissipation fin and the support seat are an integral structure.

7. The automotive brake disc of claim 1, wherein The annular fin heat sink further comprises a connecting piece arranged between adjacent heat dissipation fins, and the plurality of connecting pieces are staggered between the multilayer heat dissipation fins to form a three-dimensional mesh structure.

8. The automotive brake disc of claim 1, wherein, The automobile brake disc further comprises a heat-conducting pad arranged between the support seat and the inner wall of the groove.

9. The automotive brake disc of claim 8, wherein, The thickness of the heat-conducting pad is 0.5-2 mm.

10. The automotive brake disc of claim 1, wherein, The end of the annular fin heat sink close to the inner wall of the groove is a closed surface, and the end away from the inner wall of the groove is an open surface.

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