Patent ID: 9206869
Filing Date: 2015-12-08
Classification: F16D

Abstract:
1. A brake disk comprising: a body formed integrally having an annular portion defined thereon, the annular portion of the body defining a central axis, the annular portion having a brake portion which is remote from the central axis for a bike brake device to clamp the brake portion, the body having at least one assembling portion extended toward the central axis for connecting with a bike hub, at least one connecting portion formed between the assembling portion and the brake portion, the connecting portion having at least one first fixing portion formed thereon; and at least two heat dissipation members respectively assembled at two corresponding lateral sides of the connecting portion, each heat dissipation member having at least one second fixing portion, the second fixing portion fixedly assembled to the first fixing portion; wherein the at least one assembling portion includes plural assembling portions formed thereon; each assembling portion is formed as substantially V-shaped or Y-shaped and has two arms; a connecting position of the two arms is connected with the connecting portion; each arm of each of the plural assembling portion is connected with an adjacent arm of an adjacent one of the plural assembling portion, so that the assembling portions perform as substantially a radial structure; an assembling hole is formed on one said connecting position between two connected arms of every two adjacent assembling portions.