Heat dissipating brake rotor
AssigneeSram, LLC
InventorCHARLES DUNLAP
Life of this patent
Estimating the term…
Abstract
A brake rotor for a bicycle has a brake body formed of a first material and a cooling element with a cooling body, at least part of which is formed of a second material that has a higher thermal conductivity than the first material. The brake body has a generally annular shape with a first axial contact surface. The cooling body is coupled to the first axial contact surface. The cooling body may be in contact with the first axial contact surface around the brake body for a majority of a circumference of the heat dissipation region. The cooling body may be attached to or be an integral part of a carrier coupled to the brake body.
Claims31
A brake rotor for a bicycle, the brake rotor comprising:
- a brake body formed of a first material and having a generally annular shape with a radially outer friction region and a radially inner heat dissipation region, the heat dissipation region having a first axial contact surface;
- and
- a carrier having a coupling region, the carrier configured for transmitting a braking load between the brake body and the coupling region, the carrier including a cooling body formed of a second material and coupled to the first axial contact surface,
- wherein the second material has a higher thermal conductivity than the first material, and
- wherein the cooling body is in contact with the first axial contact surface around the brake body for a majority of a circumference of the heat dissipation region.
A brake rotor for a bicycle, the brake rotor comprising:
- a brake body formed of a first material and having a generally annular shape with a first axial surface and a second axial surface opposite the first axial surface;
- a carrier formed of a second material and coupled to the brake body such that one or more first contact sections of a first cooling body of the carrier contact the first axial surface of the brake body;
- and
- a second cooling body formed of a third material and coupled to the brake body such that one or more second contact sections of the second cooling body contact the second axial surface of the brake body,
- wherein at least one of the second material or the third material has a higher heat conductivity than the first material of the brake body.
A brake rotor for a bicycle, the brake rotor comprising:
- a brake body formed of a first material and having a generally annular shape, the brake body having a first axial surface, a second axial surface opposite the first axial surface, and an inner periphery that faces radially inward and extends circumferentially around the brake body;
- a carrier formed of a second material that has a higher thermal conductivity than the first material, the carrier coupled to the brake body with a portion of the carrier in contact with the first axial surface;
- a second cooling body coupled to the brake body with a portion of the second cooling body in contact with the second axial surface, the brake body disposed between the portion of the second cooling body and the portion of the carrier;
- and
- a plurality of attachment features formed into the inner periphery of the brake body,
- wherein the second cooling body and carrier are joined to one another and to the brake body by fasteners through the plurality of attachment features, whereby the plurality of attachment features are configured to permit relative radial expansion between the brake body and the second cooling body and carrier.
Dependencies are inferred from the claim text.