Ball ramp actuator

摘要

A first ball ramp half includes a first ball ramp plate grounded within a housing against translation that defines first portions of respective one or more ramped ball receiving recesses. A second ball ramp half includes a gear plate supported within the housing for rotation relative to the first ball ramp plate and grounded within the housing against translation relative to the first ball ramp plate that has gear teeth, a second ball ramp plate supported within the housing for rotation relative to the first ball ramp plate that defines complementary second portions of the respective one or more ramped ball receiving recesses, and a joint coupling the gear plate to the second ball ramp plate. The joint imparts rotation of the gear plate to the second ball ramp plate, and is permissive of translation of the second ball ramp plate relative to the first ball ramp plate.

主权项

1. A ball ramp actuator, comprising:
a housing; a first ball ramp half including:
a first ball ramp plate grounded within the housing against translation, the first ball ramp plate defining first portions of respective one or more ramped ball receiving recesses; a second ball ramp half opposing the first ball ramp half and including:
a gear plate supported within the housing for rotation relative to the first ball ramp plate and grounded within the housing against translation relative to the first ball ramp plate, the gear plate having gear teeth,a second ball ramp plate supported within the gear plate for rotation relative to the first ball ramp plate, the second ball ramp plate defining complementary second portions of the respective one or more ramped ball receiving recesses, anda joint coupling the gear plate to the second ball ramp plate, the joint imparting rotation of the gear plate to the second ball ramp plate, permissive of translation of the second ball ramp plate relative to the first ball ramp plate, including one or more circumferentially spaced guide slots opening from one of a radially outer edge of the second ball ramp plate and a radially inner edge of the gear plate, and including one or more rollers extending from the other of the radially outer edge of the second ball ramp plate and the radially inner edge of the gear plate into respective ones of the one or more guide slots;a load transferring ball positioned in the each of the one or more ramped ball receiving recesses; anda driven pinion gear having gear teeth meshed with the gear teeth of the gear plate to rotate the second ball ramp plate via the gear plate relative to the first ball ramp plate.