Adjuster device for adjusting and holding a first part of a vehicle seat relative to a second part

A seat adjuster for the adjustment of a first part of a motor vehicle seat in relation to a second part of the seat, the seat adjuster comprising:

• an elbow piece connected with the first part and having a center as well as a regular front surface,
• a support piece connected with the second part, rotatably supported around the center and defining a first clamping bevel and a second clamping bevel, the clamping bevels facing in each case the front surface and forming with the front surface a first clamping gap and a second clamping gap, wherein the first clamping gap and the second clamping gap taper in each case,
• a first clamping body arranged between the first clamping bevel and the front surface, and a second clamping body arranged between the second clamping bevel and the front surface,
• two elastical means, one of said elastical means is arranged between the first clamping body and the support piece, loads the first clamping body into a clamping position in a first direction of rotation and presses the first clamping body within the first clamping gap into a wedging position, and the other of said elastical means is arranged between the second clamping body and the support piece, loads the second clamping body into a wedging position in a second direction of rotation and presses the second clamping body within the associated clamping gap into a wedging position, and
• a lever, which is rotatably arranged around the center, is normally in a neutral position, and defines a first driver and a second driver, the first driver facing the first clamping body without contacting the first clamping body and the second driver facing the second clamping body without contacting the second clamping body, and said lever, starting from the neutral position, is movable into an operating position in each case, in this operating position a driver presses a respective facing clamping body out of the wedging position and thereafter rotates the support piece.