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US 11,261,928 B2Granted
Disc brake
AssigneeMeritor Heavy Vehicle Braking Systems (UK) Limited
InventorsMartin P. Taylor, Gareth Holtham
Life of this patent
Estimating the term…
Abstract
An actuation mechanism for a disc brake. The actuation mechanism may include a yoke, a piston, a wear adjustment mechanism, and a rolling element bearing. The piston may have a rotatable portion. The wear adjustment mechanism may have a driving portion. The rolling element bearing may be located between the driving portion and the yoke.
Claims19
An actuation mechanism for a disc brake, the actuation mechanism comprising:
- a non-rotatable yoke to transmit an actuating force from an operating shaft;
- a piston configured to be driven by the yoke to transmit the actuating force to a brake pad, the piston including a rotatable portion that is rotatable with respect to the yoke to cause the piston to extend;
- a wear adjustment mechanism for adjusting extension of the piston to account for wear of the brake pad, the wear adjustment mechanism including a driving portion configured to be driven by the operating shaft to transfer torque from the operating shaft to the rotatable portion of the piston to cause the rotatable portion to rotate and extend the piston, wherein the driving portion is a drive drum that is directly engaged by a link member that is connected to, or integral with, the operating shaft;
- and
- a rolling element bearing located between the drive drum of the wear adjustment mechanism and the yoke, wherein an outer race of the rolling element bearing is rotationally fixed to the yoke, and an inner race of the rolling element bearing is rotationally fixed to the drive drum.
2 more elements
A method of assembling a disc brake comprising the steps of:
- installing an actuation mechanism within the disc brake, the actuation mechanism comprising:
- a non-rotatable yoke to transmit an actuating force from an operating shaft;
- a piston configured to be driven by the yoke to transmit the actuating force to a brake pad, the piston including a rotatable portion that is rotatable with respect to the yoke to cause the piston to extend;
- and
- a wear adjustment mechanism for adjusting extension of the piston to account for wear of the brake pad, the wear adjustment mechanism including a driving portion configured to be driven by the operating shaft to transfer force from the operating shaft to the rotatable portion of the piston to cause the rotatable portion to rotate and extend the piston, wherein the driving portion is a drive drum that is directly engaged by a link member that is connected to, or integral with, the operating shaft;
- and
- locating a rolling element bearing between the drive drum of the wear adjustment mechanism and the yoke, wherein an outer race of the rolling element is rotationally fixed to the yoke, and an inner race of the rolling element bearing is rotationally fixed to the drive drum.
4 more elements
A disc brake comprising:
- an actuation mechanism that includes:
- a non-rotatable yoke to transmit an actuating force from an operating shaft;
- a piston configured to be driven by the yoke to transmit the actuating force to a brake pad, the piston including a rotatable portion that is rotatable with respect to the yoke to cause the piston to extend;
- and
- a wear adjustment mechanism for adjusting extension of the piston to account for wear of the brake pad, the wear adjustment mechanism including a driving portion configured to be driven by the operating shaft to transfer torque from the operating shaft to the rotatable portion of the piston to cause the rotatable portion to rotate and extend the piston, wherein the driving portion is a drive drum that is directly engaged by a link member that is connected to, or integral with, the operating shaft;
- and
- a rolling element bearing is located between the drive drum of the wear adjustment mechanism and the yoke, wherein an outer race of the rolling element bearing is rotationally fixed to the yoke, and an inner race of the rolling element bearing is rotationally fixed to the drive drum.
4 more elements
Dependencies are inferred from the claim text.