Anti-rattle caliper assembly
AssigneeZF Active Safety US Inc.
InventorsPerry J. Jenkins, Galus Chelaidite
Life of this patent
Estimating the term…
Abstract
A piston assembly for a disc brake assembly having a housing with a passage includes a piston provided in the passage and axially movable therein in response to hydraulic pressure. A rotatable spindle extends into the piston. A nut is threadably connected to the spindle such that rotation of the spindle results in axial movement of the nut within the passage to thereby axially move the piston. A damping member encircles the nut and has one of a sliding and rolling interface with the piston in response to relative axial movement between the nut and the piston to prevent rattling of the nut against the piston.
Claims20
A piston assembly for a disc brake assembly having a housing with a passage, comprising:
- a piston provided in the passage and axially movable therein in response to hydraulic pressure;
- a rotatable spindle extending into the piston;
- a nut threadably connected to the spindle such that rotation of the spindle results in axial movement of the nut within the passage to thereby axially move the piston;
- and
- a damping member encircling the nut and having a rolling interface with the piston in response to relative axial movement between the nut and the piston to prevent rattling of the nut against the piston.
A piston assembly for a disc brake assembly having a housing with a passage, comprising:
- a piston provided in the passage and axially movable therein in response to hydraulic pressure;
- a rotatable spindle extending into the piston;
- a nut threadably connected to the spindle such that rotation of the spindle results in axial movement of the nut within the passage to thereby axially move the piston;
- a volume reducer connected to the nut and having a recess;
- and
- an annular damping member provided in the recess and having a circular cross-section in the circumferential direction, the damping member having a rolling interface between the recess and the piston in response to relative axial movement between the nut and the piston to prevent rattling of the nut against the piston.
Dependencies are inferred from the claim text.