Positioning drive for a motor vehicle door closing device

Details Positioning drive for a motor vehicle door closing device Positioning drive for a motor vehicle door closing device

1987-07-09

1989-04-18

Ostrager, Allen M.

Power plants

System having plural motors or having diverse types of...

System of plural motors having a common output structure

292144, 292201, 292216, 70279, 70282, E05C 306, E05B 3720

Patent

active

048215210

ABSTRACT:
The positioning drive for a motor vehicle door closing device, particularly for a motor vehicle central locking mechanism, comprises an electric motor, a transmission, a gear/spindle unit and a positioning element all mounted in a housing. The positioning element is extendible and retractable by alternating action with the spindle. So that the positioning element can be moved back to its initial position without operation of the motor or application of a external manual force a spring extensible by a rotary motion is mounted in the transmission. It is attached with one end on a rotatable transmission component and braced or supported with the other end on the housing. This spring is extensible by the electric motor with the extension or retraction of the positioning element. The positioning element is returnable to its initial position by operation of the spring after the electric motor is shut off.

REFERENCES:
patent: 4624491 (1986-11-01), Vincent
patent: 4708378 (1987-11-01), Ingenhoven

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