TW201945650A - Brake disc - Google Patents

Abstract

A brake disc is provided, including: a main body, including an inner ring portion, an outer ring portion and a connecting portion which extends radially and is connected between the inner ring portion and the outer ring portion; at least one heat dissipating plate, being attached to the main body, including a first surface which faces the main body and overlaps the connecting portion, the first surface having a first portion and a second portion which are convex and concave relatively.

Description

Brake disc

The invention relates to a brake disc.

Generally, the braking methods of bicycles include disc brakes and drum brakes. Among them, the disc brakes are widely used because of their high braking force and difficult to wear parts. The disc brake is used to make the disc clamp the brake disc to generate friction, and then stop the wheels to achieve the effect of braking. The high heat generated by constant friction will cause the friction between the brake disc and the disc to decrease, resulting in poor or even failure of the braking effect. Therefore, the cooling effect of the brake disc is very important. However, although the conventional brake disc is provided with a plurality of heat dissipation holes for ventilation, its heat dissipation effect is still insufficient and the structural strength of the brake disc may be weakened due to the opening, which has the disadvantage of needing urgent improvement.

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

The main 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 provides a brake disc, comprising: a 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 A heat sink is coupled to the body, and includes a first surface facing the body and overlapping the connection portion, the first surface having a first portion and a second portion that are relatively concave and convex.

The following only illustrates the possible implementation aspects of the present invention by way of examples, but is not intended to limit the scope of the present invention to be protected, which will be described 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 body 10 and at least one heat sink 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 coupled to the body 10 The first surface 21 includes a first surface 21 facing the body 10 and overlapping with the connecting portion 13. The first surface 21 has a first portion 211 and a second portion 212 which are relatively uneven. Thereby, the brake disc 1 can have a large heat dissipation area and a better heat dissipation effect, and the relatively uneven first surface 21 has better structural strength without the need for additional components.

The body 10 further includes two opposite side surfaces 14 in the thickness direction. The first portion 211 protrudes between the two side surfaces 14 to make the brake disc 1 thinner. However, 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 portion 211 and the second portion 212 and the connection portion 13, and the heat dissipation channel 22 can be used for gas circulation 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. The second portion 212 includes a plurality of cover portions 213 covered on 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 two opposite sides in the thickness direction of the body 10 to increase the structural strength of the brake disc 1. The two radiating fins 20 are in contact with the corresponding first portion 211, and the cover 213 surrounds the spoke rib 131 to form a radiating passage 22. Gas can flow through the radiating passage 22 to increase the heat dissipation effect. . However, the first two parts corresponding to the two positions on the two heat sinks may be disposed at intervals; the heat sinks may also be layered on the body.

The outer ring portion 12 further includes at least one protruding rib 121 extending radially inward, and the at least one heat sink 20 at least partially overlaps the at least one protruding rib 121. It should be noted that the above-mentioned "overlap" may refer to a state viewed in the axial direction, including that the first surface 21 is in contact with or not in contact with the connection portion 13. In the present embodiment, the at least one protruding rib 121 is plural and extends integrally from the outer ring portion 12, and the plurality of protruding ribs 121 are in contact with the at least one heat sink 20, whereby the thermal energy generated by friction can be obtained by the The outer ring portion 12 is guided to the at least one heat sink 20 via the plurality of ribs 121 to improve heat dissipation efficiency. However, 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 be separately connected and disposed.

Preferably, the second portion 211 includes a plurality of cover portions 213a disposed on the plurality of ribs 121, and at least one of the heat dissipation channels 22 is defined between each of the cover portions 213a and one of the ribs 121; each of the covers The portion 213a and each of the convex ribs have corresponding outer contours, and may also extend radially inward to increase gas flow efficiency. Each of the convex ribs 121 and each of the spoke ribs 131 may be disposed at intervals, so that the thermal energy of the body 10 can be uniformly discharged.

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 connection portion 13. The body 10 is provided with a first group of connecting portions 15, and the at least one heat sink 20 is provided with a second group of connecting portions 16 that can be connected to the first group of connecting portions 15. In this embodiment, the first group connection portion 15 is provided on the at least one rib 121, the second group connection portion 16 is provided on the cover portion 213a, the first group connection portion 15 and the second group connection portion The 16 series are connected through a fixing member 30. The first group of joints 15 and the second group of joints 16 can also be connected by, for example, but not limited to, riveting, welding, welding, or screwing.

Furthermore, the thickness of each heat sink 20 is between 0.2 and 1.22 millimeters, which has proper structural strength and good heat dissipation effect. The material of the heat sink 20 is preferably an aluminum alloy, which is light in weight and has good thermal conductivity, helps heat dissipation, and has better formability, corrosion resistance and durability. The heat sink may be a single component integrally formed; the heat sink may also include a plurality of heat dissipation elements, and the plurality of heat dissipation elements may be spaced apart or in contact with each other on opposite sides in the thickness direction of the body; the plurality of heat dissipation elements may also be Multiple layers are provided on the body.

Please refer to the second preferred embodiment shown in FIGS. 6 and 7, wherein the second portion 212a 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. on. The ring portion 214 is provided with a plurality of through holes 215 corresponding to the plurality of array connection holes 111 of the inner ring portion 11, and the body 10 and the heat sink 20a can be locked by each of the group of connection holes 111 and each of the through holes 215. Fixed to the hub of a bicycle for added stability.

1‧‧‧brake disc

10‧‧‧ Ontology

11‧‧‧ Inner Ring Department

111‧‧‧set of holes

12‧‧‧ Outer Ring Department

121‧‧‧ raised rib

13‧‧‧Connecting Department

131‧‧‧ spoke rib

14‧‧‧ side

15‧‧‧The first group connection

16‧‧‧The second group connection department

20,20a‧‧‧ heat sink

21‧‧‧ the first side

211‧‧‧Part I

212,212a‧‧‧Part II

213,213a‧‧‧cover

214‧‧‧Ring

215‧‧‧through hole

22‧‧‧cooling channel

30‧‧‧Fixed parts

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 partially enlarged view of FIG. 2. FIG. 4 is a partially enlarged view of FIG. 1. FIG. 5 is a cross-sectional view of a portion indicated by an arrow in FIG. 1. FIG. 6 is an exploded view of a second preferred embodiment of the present invention. FIG. 7 is a partially enlarged view of FIG. 6.

Claims (10)

A brake disc includes: a 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 body Includes a first surface facing the body and overlapping the connecting portion, the first surface having a first portion and a second portion which are relatively concave and convex. The brake disc according to claim 1, wherein the body further includes two opposite sides in a thickness direction, and the first portion projects between the two sides. The brake disc according to 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. The brake disc according to claim 1, wherein 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 brake disc according to claim 1, wherein a heat dissipation channel is defined between at least one of the first part and the second part and the connection part. The brake disc according to claim 1, wherein the outer ring portion further includes at least one rib extending radially inward, and the at least one fin at least partially overlaps the at least one rib. The brake disc according to claim 1, wherein 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 lid portions covering the plurality of spoke ribs. . The brake disc according to claim 1, wherein the thickness of the at least one heat sink is between 0.2 and 1.22 mm. The brake disc according to claim 1, wherein the body further includes two opposite sides in a thickness direction, and the first portion projects between the two sides; the first surface and the inner ring portion and the outer ring portion In contact with at least one of the connecting portions; 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 group of connecting portions, the at least one The heat sink is provided with a second group connection part which can be connected with the first group connection part; at least one of the first part and the second part defines a heat dissipation channel between the connection part; the outer ring part further includes A plurality of ribs extending radially inward, the at least one heat sink is at least partially overlapped with the plurality of ribs; the second part further includes a plurality of lid portions covering the plurality of ribs; the connecting portion includes a plurality of connecting portions connected to the plurality of ribs The second rib includes an inner rib portion and an outer rib portion. The second portion includes a plurality of lid portions covering the plurality of spoke ribs. Each of the convex ribs is spaced apart from each of the ribs. The thickness of the at least one fin Between 0.2 and 1.22 mm. The brake disc according to any one of claims 1 to 9, wherein the number of the at least one heat sink is two, and the two heat sinks are respectively disposed on two opposite sides in the thickness direction of the body.