Power driven adjuster for a backrest of a vehicle seat

Details Power driven adjuster for a backrest of a vehicle seat Power driven adjuster for a backrest of a vehicle seat

1978-07-21

1980-09-30

Lyddane, William E.

Chairs and seats

Movable back

Tiltable

74805, A47C 1025

Patent

active

042251826

ABSTRACT:
A drive for an arrangement for adjusting the inclination of a backrest component of a vehicle seat includes a motor and a transmission interposed between the motor and an actuating member of a tilting device incorporated in a hinge which tiltably mounts the backrest component on a seat component of the vehicle seat. The transmission includes a support member which is stationarily mounted on one of the hinge members of the hinge and has an internal gear annulus, an eccentric member rotatably mounted on the support member, and a gear element which is mounted on an eccentric portion of the eccentric member, has an external gear annulus meshing with the internal gear annulus of the support member, and is connected to the actuating member of the tilting device for joint rotation and for relative radial displacement to the extent of the eccentricity of the eccentric portion. The gear element may have a plurality of pins affixed thereto, and an output element jointly rotatable with the actuating member may have a corresponding plurality of apertures therein which receive the pins and each of which has a diameter exceeding that of the pin received therein by twice the eccentricity of the eccentric portion of the eccentric member.

REFERENCES:
patent: 2170951 (1939-08-01), Perry
patent: 3019594 (1962-02-01), Sundt
patent: 3037400 (1962-06-01), Sundt
patent: 3432880 (1969-03-01), Putsch et al.
patent: 3976327 (1976-08-01), Wirtz et al.

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