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US 12,560,210 B2Granted
Air disc brake system with caliper retraction and methods for the use and assembly thereof
AssigneeBendix Commercial Vehicle Systems LLC
InventorDavid R. Church
Life of this patent
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Abstract
An air disc brake system includes a carrier and a guide pin mounted to the carrier. A caliper is slidably mounted on the guide pin. The caliper has an annular groove extending radially outwardly from an inner circumferential surface. The caliper is moveable relative to the guide pin from a non-braking position to a braking position. A friction ring is disposed in the annular groove and is deformable from a first configuration when the caliper is in the non-braking position to a second configuration when the caliper is in the braking position. The friction ring biases the caliper from the braking position to the non-braking position. Methods of using and assembling the air disc brake system are also provided.
Claims17
An air disc brake system comprising:
- a carrier;
- a guide pin mounted to the carrier, wherein the guide pin comprises an outer circumferential surface;
- a caliper slidably mounted on the guide pin, wherein the caliper comprises an inner circumferential surface surrounding the outer circumferential surface and an annular groove extending radially outwardly from the inner circumferential surface, wherein the caliper is moveable relative to the guide pin from a non-braking position to a braking position, and wherein the caliper is moveable to the braking position in response to air pressure being applied to an actuator operably coupled to the caliper;
- and
- a friction ring disposed in the annular groove, wherein the friction ring comprises an inner circumferential surface engaging the outer circumferential surface of the guide pin, and wherein the friction ring is deformable from a first configuration when the caliper is in the non-braking position to a second configuration when the caliper is in the braking position, and wherein the friction ring biases the caliper from the braking position to the non-braking position.
2 more elements
A method of actuating an air disc brake system comprising:
- applying a force to a lever;
- moving a bridge in a first axial direction with the lever in response to the force being applied to the lever;
- moving an inner brake pad operably coupled to the bridge in the first axial direction;
- sliding a caliper in a second axial direction opposite the first axial direction on a guide pin;
- deforming a friction ring disposed between the caliper and the guide pin;
- moving an outer brake pad in the second axial direction with the caliper;
- releasing the force from the lever;
- biasing the bridge in the second axial direction with a spring;
- and
- biasing the caliper in the first axial direction with the friction ring.
7 more elements
An air disc brake system comprising:
- a carrier;
- a guide pin mounted to the carrier, wherein the guide pin comprises an outer circumferential surface;
- a caliper comprising:
- a housing slidably mounted on the guide pin, wherein the housing comprises a bore having an inner circumferential surface surrounding the outer circumferential surface and an annular groove extending radially outwardly from the inner circumferential surface, and wherein the housing is moveable relative to the guide pin from a non-braking position to a braking position;
- a lever supported by an eccentric bearing disposed in the housing, wherein the lever comprises a first portion engageable by an actuator, and a second portion, wherein the lever is pivotable relative to the caliper housing on the eccentric bearing from an unactuated position to an actuated position;
- and
- a bridge engaged by the second portion of the lever, wherein the bridge is moveable from a first position to a second position as the lever is pivoted from the unactuated position to the actuated position;
- and
- a friction ring disposed in the annular groove, wherein the friction ring comprises an inner circumferential surface engaging the outer circumferential surface of the guide pin, and wherein the friction ring is deformable from a first configuration when the housing is in the non-braking position to a second configuration when the housing is in the braking position, and wherein the friction ring biases the housing from the braking position to the non-braking position.
6 more elements
An air disc brake system comprising:
- a carrier;
- a guide pin mounted to the carrier, wherein the guide pin comprises an outer circumferential surface and an annular groove extending radially inwardly from the outer circumferential surface;
- a caliper slidably mounted on the guide pin, wherein the caliper comprises an inner circumferential surface surrounding the outer circumferential surface, and wherein the caliper is moveable relative to the guide pin from a non-braking position to a braking position;
- and
- a friction ring disposed in the annular groove, wherein the friction ring comprises an outer circumferential surface engaging the inner circumferential surface of the caliper, and wherein the friction ring is deformable from a first configuration when the caliper is in the non-braking position to a second configuration when the caliper is in the braking position, and wherein the friction ring biases the caliper from the braking position to the non-braking position.
2 more elements
Dependencies are inferred from the claim text.