BRAKE DISK

摘要

A brake disk includes an annular body, a plurality of first heat dissipation holes and a plurality of second heat dissipation holes. The annular body has two opposite side surfaces, an inner circumferential wall and an outer circumferential wall. The first heat dissipation holes are formed on at least one of the two side surfaces. The second heat dissipation holes penetrate through the annular body between the inner circumferential wall and the outer circumferential wall. A surface within any of the second heat dissipation holes is formed with irregular structures.

主权项

1. A brake disk, comprising:
an annular body, integrally formed in one piece, having two opposite side surfaces, an inner circumferential wall and an outer circumferential wall; a plurality of first heat dissipation holes, formed on at least one of the side surfaces; and a plurality of second heat dissipation holes, penetrating through between the inner circumferential wall and the outer circumferential wall, a surface within any of the second heat dissipation holes being formed with irregular structures; wherein each diameter of each second heat dissipation hole is smaller than ½ of each diameter of each first heat dissipation hole.