Motor vehicle clutch assembly having a hydraulic actuator which hydraulic actuator has a transmission

US5680916A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Udo Borschert · Schweinfurt, DE
• Lutz Leimbach · Oberwerrn, DE
• Ullrich Scherpf · Hammelburg, DE
• Manfred Waning · Wonfurt, DE
• Michael Zottmann · Dittelbrunn, DE

Key dates

• Filing date: Sep 21, 1995
• Grant date: Oct 28, 1997
• Expiry date: Sep 21, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2025/081
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An actuator is provided with a drive system and a crank mechanism which converts the motion of the drive system into an essentially translational motion of an output element. The crank mechanism is designed as a worm gear pair with a worm gear which sits on the output shaft and is engaged with a segment worm gear which is rotationally mounted in a housing, whereby engaged with the segment worm gear, in addition to the output element, there is an energy storing device, preferably a spring device, mounted so that it can pivot in a bearing, which energy storing device can move relative to the segment worm gear. The spring device, in the relative position of the energy storing device with respect to the segment worm gear in which the distance between the bearing point of the energy storing device and its engagement with the segment worm gear is at a minimum, is brought closer with its end facing the segment worm gear, to within the gap width, to the outer edge of the segment worm gear, and when the worm gear is displaced around its axis of rotation, can be inserted in a recess which is located in the segment worm gear.