Electromechanical drive for a motor-vehicle power door latch

Details Electromechanical drive for a motor-vehicle power door latch Electromechanical drive for a motor-vehicle power door latch

1993-11-23

1995-11-07

Lindsey, Rodney M.

Closure fasteners

Bolts

Swinging

292DIG23, 74 96, 192139, 192150, E05C 306

Patent

active

054642604

ABSTRACT:
A motor-vehicle door latch has a drive having a housing formed with an inner surface formed relative to a main axis traversing the housing with two angularly offset and radially inwardly open notches, a shaft rotatable in the housing about the main axis and having a radially outwardly projecting bump, and a wheel rotatable in the housing about the main axis, surrounding the shaft in the housing, and connected to the input member of the latch to rotate jointly with the input member between locked and unlocked positions of the latch. A lobe on the wheel projects radially outward into one of the notches. A radially outwardly deflectable abutment on the wheel is angularly engageable with the bump of the shaft and is urged by a spring radially inward on the wheel so that the bump can angularly engage the abutment and angularly displace the wheel. A rocker pivotal on the wheel about a rocker axis generally parallel to the main axis and angularly offset from the abutment has an end offset angularly from the rocker axis and formed with an outwardly directed tooth engageable in the other notch only in the locked position of the wheel. The bump and an inner surface of the rocker are dimensioned such that, when the wheel is in the locked position, engagement of the bump with the end of the rocker forces the tooth radially outward into the other notch and thereby angularly blocks the wheel in the housing.

REFERENCES:
patent: 2256781 (1941-09-01), Nelson
patent: 4610340 (1986-09-01), Helmes et al.
patent: 4669283 (1987-06-01), Ingenhoven
patent: 5261711 (1993-11-01), Mizuki et al.

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