Brake disk

摘要

Disclosed is a brake disk. The brake disk includes a friction part having a coupling aperture within a center thereof and a plurality of recessed portions repeatedly formed at a predetermined interval along an inner circumference of the coupling aperture, in which bevels protrude from inner surfaces of the recessed portions, respectively. The bevels are tapered along upper and lower sides thereof toward protruding centers. The brake disk also includes a hub having a plurality of protrusions inserted into and attached to the recessed portions when coupled to and received in the coupling aperture of the friction part via a cast-bonding method, along a circumference thereof.

主权项

1. A brake disk comprising:
a friction part having a coupling aperture within a center thereof and having a plurality of recessed portions repeatedly formed at a predetermined interval along an inner circumference of the coupling aperture, in which bevels protrude inner side surfaces of the recessed portions, respectively, the bevels tapered along upper and lower sides of the inner side surfaces toward protruding centers thereof; and a hub having a plurality of protrusions inserted into and attached to the recessed portions when coupled to the coupling aperture of the friction part, along a circumference thereof, wherein insertion portions protruding between the plurality of recessed portions are repeatedly formed along an inner circumference of the coupling aperture, and terraces are formed on upper or lower surfaces of the protruding insertion portions.