Gear stage
AssigneeKEIPER GmbH & Co. KG
InventorsRolf Schüler, Bernd Bossmanns, Karsten Kalmus
Life of this patent
Estimating the term…
Abstract
A gear stage (10), in particular of a vehicle seat (3), is embodied as a friction wheel gear stage. The gear stage includes a housing (5), a drive (12), an output (14) that is set off from the drive (12) by an excentricity (e) and at least one sphere (15) or another rolling body for the transmission of force between the drive (12) and the output (14). The position of the excentricity (e) relative to the housing (5) is arranged in a spatially fixed manner.
Claims18
A gear stage of a vehicle seat, the gear stage being a friction wheel gear stage comprising:
- a housing;
- a drive input;
- a drive output spaced apart from the drive input by an eccentricity;
- for each drive direction, precisely one rolling body provided for transmitting force between the drive input and drive output, a position of the eccentricity with respect to the housing being spatially fixed;
- and
- a pressure-exerting element comprising at least one of a spring fixed to the housing and a magnet, which pushes or pulls the rolling body into a wedge gap between the drive input and drive output.
A gear stage arrangement comprising:
- a housing;
- a drive input;
- a drive output spaced apart from the drive input by an eccentricity, a position of the eccentricity with respect to the housing being fixed;
- a first rotational direction rolling body arrangement provided for transmitting force between the drive input and drive output in a first rotational direction to form a friction wheel gear stage, the first rotational direction rolling body arrangement comprising only a single rolling body as an only driving structure transmitting force between the drive input and the drive output in the first rotational direction and the only driving structure driving the drive output in the first rotational direction, the rolling body being movable in a space between the drive input and the drive output and a pressure-exerting element fixed to the housing, which pushes or pulls the single rolling body in a direction perpendicular to and axial direction into a wedge gap in the space between the drive input and drive output.
A gear stage arrangement comprising:
- a housing;
- a drive input rotating about a drive input axis;
- a drive output rotating about a drive output axis spaced apart from the drive input axis by an eccentricity, a position of the eccentricity with respect to the housing being fixed;
- a rolling body arrangement for transmitting force between the drive input and drive output to form a friction wheel gear stage driving the drive output in at least one of a first rotational direction of drive and a second rotational direction of drive, the rolling body arrangement comprising for each direction of drive only a single rolling body as an only driving structure transmitting force between the drive input and the drive output in a rotational direction and the only driving structure driving the drive output in the rotational direction, the single rolling body being movable relative to the drive input axis and relative to the drive output axis, and a pressure-exerting element which pushes or pulls the single rolling body, in at least one of a circumferential and radial direction, into a wedge gap between the drive input and drive output.
Dependencies are inferred from the claim text.