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US 4,225,182 AGranted
Power driven adjuster for a backrest of a vehicle seat
AssigneeKeiper Automobiltechnik GmbH & Co. KG
InventorPaul Werner
Life of this patent
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AssigneeKeiper Automobiltechnik GmbH & Co. KG
InventorPaul Werner
Estimating the term…
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.
In an arrangement for adjusting the inclination of a backrest part relative to a seat part of a motor vehicle seat, including two hinge members secured, respectively, to said seat parts, a rotary first actuation member having a centric portion bearing for rotation on one of said hinge members and an eccentric portion supporting for rotation the other hinge member, a first internal gear formed on said one hinge member around said centric portion and a first spur gear formed on said other hinge member around said eccentric portion, said spur gear being smaller in diameter than said internal gear and being in mesh with the latter, a combination comprising a reduction transmission including a support member secured to said one hinge member and being formed with a second internal gear corresponding in diameter to said first internal gear;
Dependencies are inferred from the claim text.