CN110792705A - brake disc - Google Patents

Abstract

The present invention relates to a brake disc, comprising: a main body, including an inner ring portion, an outer ring portion and a connecting portion extending radially and connected to the inner ring portion and the outer ring portion; at least one heat sink, combined with the main body, including a first surface facing the main body and overlapping with the connecting portion, the first surface having a first portion and a second portion that are relatively concave and convex.

Description

brake disc

technical field

The present invention relates to a brake disc.

Background technique

The braking methods of general bicycles include disc brakes and drum brakes, among which disc brakes are widely used because of their high braking force and not easy to wear parts. Disc brakes are used to make the pads clamp the brake disc to generate friction, thereby stopping the wheels from rotating to achieve the effect of braking. The high heat generated by the constant friction will cause the friction between the brake disc and the pad to decrease, resulting in poor braking effect or even failure. Therefore, the heat dissipation effect of the brake disc is very important. However, although the known brake disc is provided with a plurality of heat dissipation holes for ventilation, the heat dissipation effect is still insufficient, and the structural strength of the brake disc may be weakened due to the opening, which has disadvantages that need to be improved.

Therefore, it is necessary to provide a novel and progressive brake disc to solve the above-mentioned problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a brake disc, which can increase the heat dissipation effect.

To achieve the above object, the present invention adopts the following technical solutions:

The present invention provides a brake disc, comprising: a body including an inner ring portion, an outer ring portion and a connecting portion radially extending and connected with the inner ring portion and the outer ring portion; at least one cooling fin, Combined with the main body, it includes a first surface facing the main body and overlapping with the connecting portion, and the first surface has a first part and a second part which are relatively concave and convex.

The body further includes two opposite side surfaces in the thickness direction, and the first portion protrudes between the two side surfaces.

The first surface is in contact with at least one of the inner ring portion, the outer ring portion and the connecting portion.

The at least one heat sink is fixedly connected to at least one of the inner ring portion, the outer ring portion and the connecting portion.

A heat dissipation channel is defined between at least one of the first part and the second part and the connecting part.

The outer ring portion further includes at least one protruding rib extending radially inward, and the at least one cooling fin at least partially overlaps the at least one protruding rib.

The connecting portion includes a plurality of spoke ribs connected between the inner ring portion and the outer ring portion, and the second portion includes a plurality of cover portions that cover the plurality of spoke ribs.

The thickness of the at least one heat sink is between 0.2 and 1.22 mm.

The body further includes two opposite sides in the thickness direction, the first part protrudes between the two sides; the first surface and the inner ring part, the outer ring part and the connecting part at least One of them is in contact; the at least one heat sink is fixedly connected to at least one of the inner ring portion, the outer ring portion and the connecting portion; the body is provided with a first assembly portion, and the at least one heat sink is provided with a a second assembling part that can be connected with the first assembling part; a heat dissipation channel is defined between at least one of the first part and the second part and the connecting part; the outer ring part further comprises a plurality of diameters Inwardly extending protruding ribs, the at least one cooling fin at least partially overlaps the plurality of protruding ribs; the second part further comprises a plurality of cover parts covering the plurality of protruding ribs; the connecting part comprises a plurality of cover parts connected to the plurality of protruding ribs The spoke ribs between the inner ring portion and the outer ring portion, the second part includes a plurality of cover portions covering the plurality of spoke ribs; each of the protruding ribs and each of the spoke ribs are arranged at intervals; Thicknesses range from 0.2 to 1.22 mm.

The number of the at least one heat sink is two, and the two heat sinks are respectively disposed on opposite sides of the body in the thickness direction.

The beneficial effects of the present invention are: the brake disc provided by the present invention can increase the heat dissipation effect.

Description of drawings

FIG. 1 is a perspective view of a first preferred embodiment of the present invention.

FIG. 2 is an exploded view of the first preferred embodiment of the present invention.

FIG. 3 is a partial enlarged view of FIG. 2 .

FIG. 4 is a partial enlarged view of FIG. 1 .

FIG. 5 is a cross-sectional view of the portion indicated by the arrow in FIG. 1 .

FIG. 6 is an exploded view of the second preferred embodiment of the present invention.

FIG. 7 is a partial enlarged view of FIG. 6 .

Reference numerals: 1: brake disc; 10: body; 11: inner ring part; 111: assembly hole; 12: outer ring part; 121: convex rib; 13: connecting part; 131: spoke rib; 14: side surface ; 15: first assembly part; 16: second assembly part; 20, 20a: heat sink; 21: first surface; 211: first part; 212, 212a: second part; 214: ring part; 215: through hole; 22: heat dissipation channel; 30: fixing part.

Detailed ways

The following examples are only used to illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, and are described together first.

Please refer to FIGS. 1 to 5 , which show a first preferred embodiment of the present invention. The brake disc 1 of the present invention includes a main body 10 and at least one cooling fin 20 .

The body 10 includes an inner ring portion 11 , an outer ring portion 12 and a connecting portion 13 extending radially and connected to the inner ring portion 11 and the outer ring portion 12 ; the at least one heat sink 20 is combined with the body 10 , including a first surface 21 facing the body 10 and overlapping the connecting portion 13 , the first surface 21 has a first portion 211 and a second portion 212 that are relatively concave and convex. Thereby, the brake disc 1 can have a larger heat dissipation area and better heat dissipation effect, and the relatively uneven first surface 21 has better structural strength without additional components.

The body 10 further includes two opposite side surfaces 14 in the thickness direction, and the first portion 211 protrudes between the two side surfaces 14 to make the brake disc 1 thinner. Of course, the first portion 211 can also directly contact the body 10 . The first surface 21 is in contact with at least one of the inner ring portion 11 , the outer ring portion 12 and the connecting portion 13 . In this embodiment, the first surface 21 is in contact with the inner ring portion 11 and the connecting portion 13 . In contact with each other, the thermal energy of the body 10 can be guided to the at least one heat sink 20 to increase the heat dissipation effect.

In detail, a heat dissipation channel 22 is defined between at least one of the first part 211 and the second part 212 and the connecting part 13 , and the heat dissipation channel 22 can allow air to circulate to increase heat dissipation efficiency. The connecting portion 13 includes a plurality of spoke ribs 131 connected between the inner ring portion 11 and the outer ring portion 12 , and the second portion 212 includes a plurality of cover portions 213 covering the plurality of spoke ribs 131 . In this embodiment, the number of the at least one heat sink 20 is two, and the two heat sinks 20 are respectively disposed on opposite sides of the body 10 in the thickness direction to increase the structural strength of the brake disc 1 . The two corresponding first parts 211 on the two heat sinks 20 are in contact with each other, and the two corresponding cover parts 213 surround a spoke rib 131 to form the heat dissipation channel 22 , and the gas can circulate through the heat dissipation channel 22 to increase the heat dissipation effect . Of course, the two first portions corresponding to the positions of the two heat sinks can also be arranged at intervals; the heat sinks can also be layered on the body.

The outer ring portion 12 further includes at least one protruding rib 121 extending radially inward. The at least one fin 20 at least partially overlaps the at least one protruding rib 121 . It should be noted that the above-mentioned "overlapping" may refer to the state viewed in the axial direction, including the contact or non-contact of the first surface 21 and the connecting portion 13 . In this embodiment, the at least one protruding rib 121 is plural and integrally extends from the outer ring portion 12 , and the plural protruding ribs 121 are in contact with the at least one heat sink 20 , whereby the heat energy generated by friction can be dissipated by the The outer ring portion 12 is guided to the at least one heat sink 20 through the plurality of protruding ribs 121 to improve heat dissipation efficiency. Of course, the plurality of protruding ribs 121 may not be in contact with the at least one heat sink 20; the plurality of protruding ribs may also be additionally connected.

Preferably, the second portion 211 includes a plurality of cover portions 213a covering the plurality of protruding ribs 121, and at least one heat dissipation channel 22 is defined between each of the cover portions 213a and one of the protruding ribs 121; each of the covers The portion 213a and each of the protruding ribs have corresponding outer contours, and can also extend radially inward to increase the gas circulation efficiency. Preferably, each of the protruding ribs 121 and each of the spoke ribs 131 can be arranged at intervals, so that the heat energy of the main body 10 can be uniformly dissipated.

The at least one heat sink 20 is fixedly connected to at least one of the inner ring portion 11 , the outer ring portion 12 and the connecting portion 13 . The body 10 is provided with a first assembling portion 15 , and the at least one heat sink 20 is provided with a second assembling portion 16 which can be connected with the first assembling portion 15 . In this embodiment, the first assembling portion 15 is disposed on the at least one protruding rib 121 , the second assembling portion 16 is disposed on the cover portion 213 a , the first assembling portion 15 and the second assembling portion 16 is connected by a fastener 30 . The first assembly portion 15 and the second assembly portion 16 can also be connected by, for example, but not limited to, riveting, welding, welding, or screwing.

Furthermore, the thickness of each of the heat sinks 20 is between 0.2 mm and 1.22 mm, which has appropriate structural strength and good heat dissipation effect. The material of the heat sink 20 is preferably aluminum alloy, which is light in weight and good in thermal conductivity, which is helpful for heat dissipation, and has good formability, corrosion resistance and durability. The heat dissipation fin can be a single component formed integrally; the heat dissipation fin can also include a plurality of heat dissipation elements, and the plurality of heat dissipation elements can be distributed on opposite sides in the thickness direction of the body at intervals or in contact; the plurality of heat dissipation elements can also be Multiple layers are stacked on the body.

Please refer to the second preferred embodiment shown in FIG. 6 and FIG. 7 , wherein the second portion 212 a further includes a ring portion 214 connected to the plurality of cover portions 213 , and the ring portion 214 and the plurality of cover portions 213 are located on the same plane superior. The ring portion 214 is provided with a plurality of through holes 215 corresponding to the plurality of connecting holes 111 of the inner ring portion 11 . The body 10 and the heat sink 20 a can be locked through the connecting holes 111 and the through holes 215 . For a bicycle hub, increase stability.

Claims (10)

1. a brake disc, is characterized in that, it comprises: a body, comprising an inner ring portion, an outer ring portion and a connecting portion extending radially and connected with the inner ring portion and the outer ring portion; At least one heat sink, combined with the main body, includes a first surface facing the main body and overlapping with the connecting portion, and the first surface has a first portion and a second portion that are relatively concave and convex. 2 . The brake disc according to claim 1 , wherein the body further comprises two opposite side surfaces in the thickness direction, and the first portion protrudes between the two side surfaces. 3 . 3 . The brake rotor of claim 1 , wherein the first surface is in contact with at least one of the inner ring portion, the outer ring portion, and the connecting portion. 4 . 4 . The brake rotor of claim 1 , wherein the at least one cooling fin is fixedly connected to at least one of the inner ring portion, the outer ring portion and the connecting portion. 5 . 5 . The brake rotor of claim 1 , wherein a heat dissipation channel is defined between at least one of the first portion and the second portion and the connecting portion. 6 . 6 . The brake disc of claim 1 , wherein the outer ring portion further comprises at least one protruding rib extending radially inward, and the at least one cooling fin at least partially overlaps the at least one protruding rib. 7 . rib. 7. The brake disc of claim 1, wherein the connecting portion comprises a plurality of spoke ribs connected between the inner ring portion and the outer ring portion, and the second portion comprises a plurality of covers provided on the cover portion of the plurality of spoke ribs. 8 . The brake disc of claim 1 , wherein the thickness of the at least one cooling fin ranges from 0.2 to 1.22 mm. 9 . 9 . The brake disc according to claim 1 , wherein the body further comprises two opposite sides in the thickness direction, and the first part protrudes between the two sides; the first side and the At least one of the inner ring portion, the outer ring portion and the connection portion is in contact; the at least one heat sink is fixedly connected to at least one of the inner ring portion, the outer ring portion and the connection portion; The body is provided with a first assembly part, the at least one heat sink is provided with a second assembly part which can be connected with the first assembly part; at least one of the first part and the second part is connected with the first assembly part. A heat dissipation channel is defined between the connecting parts; the outer ring part further includes a plurality of protruding ribs extending radially inward, and the at least one heat dissipation fin at least partially overlaps the plurality of protruding ribs; the second part further includes a plurality of covers arranged on the cover part of the plurality of protruding ribs; the connecting part comprises a plurality of spoke ribs connected between the inner ring part and the outer ring part, the second part comprises a plurality of cover parts arranged on the plurality of spoke ribs; each The protruding rib is spaced apart from each of the spoke ribs; the thickness of the at least one heat sink is between 0.2 mm and 1.22 mm. 10. The brake disc according to any one of claims 1 to 9, wherein the number of the at least one cooling fin is two, and the two cooling fins are respectively disposed opposite to each other in the thickness direction of the body. sides.

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