US 6,536,564 B1Granted

Vented disc brake rotor

AssigneeVisteon Global Technologies, Inc.

InventorsGeorge Albert Garfinkel, Douglas Charles Myers, Nicholas James Gianaris, Syed Amir A. Hashmi

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Abstract

A vented disc brake rotor is provided. In one embodiment, the rotor includes a plurality of curved directing walls disposed between first and second braking surfaces to define a plurality of flow channels. A separating wall is disposed in each flow channel to create first and second subchannels. The total cross-sectional area of each flow channel remains substantially constant over the length of the flow channel. The flow channels can be closed to the two braking surfaces. Alternatively, the braking surfaces can be intermittent, defining a plurality of gaps that provide access to the flow channels. A tapered throat region between the braking surfaces and a hat region facilitates dissipation of heat from the braking surfaces. Rotors according to the present invention can be fabricated in a single step using various conventional casting techniques, such as die-, sand- and squeeze-casting.

Claims20

Dependent claims

A vented disc brake rotor comprising:

first and second annular braking surfaces jointly defining inner and outer circumferential surfaces and a central region;
a hat region disposed in the central region and adapted for mounting said rotor to a vehicle;
a plurality of directing walls disposed between the first and second braking surfaces and defining a plurality of flow channels, each flow channel extending from the inner circumferential surface to the outer circumferential surface;
a separating wall disposed in each flow channel, each separating wall extending from a first end at a point between the inner and outer circumferential surfaces to a second end at the outer circumferential surface, dividing a flow channel into first and second subchannels, and having a width that increases from the first end to the second end;
and
a plurality of directing fins projecting into the central region, each of the plurality of directing fins disposed adjacent a flow channel and defining a directing surface adapted to direct air into the flow channel;
wherein the total cross-sectional area of each of the plurality of flow channels remains substantially constant from the inner circumferential surface to the outer circumferential surface.

4 more elements

A vented disc brake rotor, comprising:

first and second annular braking surfaces jointly defining inner and outer circumferential surfaces and a central region;
a hat region disposed in the central region and adapted for mounting said rotor to a vehicle;
first and second pluralities of curved directing walls disposed between the first and second braking surfaces and defining a plurality of flow channels, each of the first plurality of directing walls extending from an underside of the first braking surface toward the second braking surface and each of the second plurality of directing walls extending from an underside of the second braking surface toward the first braking surface;
each of the plurality of flow channels extending from the inner circumferential surface to the outer circumferential surface;
and
a curved separating wall disposed in each flow channel, each separating wall extending from a first end at a point between the inner and outer circumferential surfaces to a second end at the outer circumferential surface, dividing a flow channel into first and second subchannels, and having a width that increases from the first end to the second end;
wherein the total cross-sectional area of each of the plurality of flow channels remains substantially constant from the inner circumferential surface to the outer circumferential surface.

4 more elements

Dependencies are inferred from the claim text.