Power actuator for motor-vehicle central lock system

US4941694A · kind A · utility

Assignee

• Kiekert GmbH & Co. Kommanditgesellschaft · DE

Inventors

• Peter Bartel · Hattingen, DE
• Rolf Schüler · Heiligenhaus, DE

Key dates

• Filing date: Apr 25, 1989
• Grant date: Jul 17, 1990
• Expiry date: Apr 25, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T292/57
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A power actuator used with a door latch has a housing fixed adjacent the latch and a slide linked to the latch and displaceable along an axis in the housing between locked and unlocked positions respectively corresponding to the locked and unlocked conditions of the latch. This slide is formed with a radially elastically deflectable entrainment formation and with a crosspiece. An axial spindle carries a nut engageable with the entrainment formation and the crosspiece of the slide. A radially elastically deflectable locking dog axially fixed to the slide is also engageable with the nut and the housing is formed with a radially inwardly open recess in which the dog is engageable only in the locked position of the slide. An electric motor can rotate the spindle and thereby displace the nut from an antitheft end position through an intermediate position and into an end locked position. In the antitheft position the nut engages the crosspiece and the dog, presses the dog into the recess, and positively retains the slide in the locked position. In the intermediate position the nut engages the entrainment formation of the nut in the locked position of the slide and out of engagement with …