US 2012/0074752 A1 · FITTING FOR A VEHICLE SEAT

Abstract

A fitting (10), in particular for a motor vehicle seat, includes a first fitting part (11), on which a ring gear (17) is formed, a second fitting part (12), on which a gear (16) is formed, which meshes with the ring gear (17), whereby the two fitting parts (11, 12) are in a transmission connection with each other, and a rotatably mounted, revolving eccentric for driving a relative rolling motion of the gear (16) and the ring gear (17). The eccentric is driven by a carrier, wherein during said rolling motion, a tooth flank (16d) of a tooth (16a) of the gear (16) contacts a tooth flank (17d) of a tooth (17a) of the ring gear (17) at a pitch point (W). The radius of curvature (K1) of the tooth flank (16d) of the tooth (16a) of the gear (16) at the pitch point (W) and the radius of curvature (K2) of the tooth flank (17d) of the tooth (17a); of the ring gear (17) at the pitch point (W) are at least approximately equal.

Claims20

Dependent claims

A fitting for a motor vehicle seat, the fitting comprising:

a first fitting part on which is formed a toothed ring;
a second fitting part on which is formed a toothed wheel which meshes with the toothed ring, as a result of which the two fitting parts are in gear connection with each other;
a rotatably supported circumferential eccentric;
a driver, the eccentric being driven by the driver for driving a relative rolling movement of the toothed wheel and the toothed ring, wherein, during this rolling movement, at one pitch point, a tooth flank of a tooth of the toothed wheel bears against a tooth flank of a tooth of the toothed ring, wherein a radius of curvature of the tooth flank of the tooth of the toothed wheel at the pitch point and the radius of curvature of the toothed flank of the tooth of the toothed ring at the pitch point are at least approximately identical.

1 more element

A vehicle seat comprising:

a seat part;
a backrest;
and
a fitting, the inclination of the backrest being adjusted by means of the fitting, the fitting comprising:
a first fitting part with a toothed ring;
a second fitting part with a toothed wheel which meshes with the toothed ring to provide a gear connection;
a rotatably supported circumferential eccentric;
a driver, the eccentric being driven by the driver for driving a relative rolling movement of the toothed wheel and the toothed ring, wherein during said rolling movement a tooth flank of a tooth of the toothed wheel bears against a tooth flank of a tooth of the toothed ring at a pitch point and a radius of curvature of the tooth flank of the tooth of the toothed wheel at the pitch point and a radius of curvature of the toothed flank of the tooth of the toothed ring at the pitch point are approximately identical.

5 more elements

Dependencies are inferred from the claim text.

Fitting for a vehicle seat

Life of this patent

Fitting for a vehicle seat

Life of this patent

Abstract

Claims20