BILATERAL DRIVE

摘要

The invention relates to a bilateral drive for rotating in the one or the other direction of drive a drive wheel (1) which is linked with an adjusting device. Said drive comprises a drive lever (2) which can be rotated about a drive axis (10), starting from an initial position, in the one or the other direction. Said lever is linked with a coupling element for expanding a spring element (6) that is at least partially supported by the cylindrical drive surface of the drive wheel (1) and that entrains the drive wheel (1) in the peripheral direction when the drive lever (2) is moved away from the initial position, while the spring element (6) is no longer supported by the cylindrical drive surface of the drive wheel (1) and the drive wheel (1) is not entrained when the drive lever (2) is returned to the initial position. The coupling element comprises expansion cams (31, 32) that can be tilted about an axis spaced apart from the drive axis (10). The expansion cams expand the actuation lever (51, 52) which is linked with the spring element (6) in such a manner that the spring element (6) which is supported by the cylindrical drive surface of the drive wheel (1) is expanded.