Power actuator for child-safety motor-vehicle door latch

Closure fasteners – Bolts – Swinging

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Details

292DIG23, E05C 306

Patent

active

056672594

ABSTRACT:
A motor-vehicle door latch has an operating lever and is provided with a child-safety cutout device movable between an enabled position in an on position of the operating lever and a disabled position in an angularly offset off position of the lever. A power actuator for the latch has a housing immediately adjacent the operating lever, an electric motor on the housing, and a rotatable output wheel on the housing adjacent the operating lever. A gear train on the housing connects the motor to the wheel for rotation of the wheel by the motor and a coupling lever fixed on and rotatable with the wheel has a pin that fits in a slot formed on the operating lever so that rotation of the wheel pivots the lever between its positions. A switching wheel or disk in the housing coaxial with and adjacent the output wheel is connected via a lost-motion coupling to the output wheel for rotating the switching wheel by the output wheel only after travel of the output wheel through a predetermined angular play. A switch in the housing operable by the switching wheel on rotation thereof signals the position of the operating lever.

REFERENCES:
patent: 4900074 (1990-02-01), Kleefeldt et al.
patent: 5240296 (1993-08-01), Kobayashi
patent: 5261711 (1993-11-01), Mizuki et al.
patent: 5476294 (1995-12-01), Menke

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