Gearbox for a motor-drive

摘要

The arrangement includes a drive-shaft connected with a drive motor, and an output shaft connected with stepping switch, or similar, to be adjusted. The drive shaft and the output shaft are mechanically coupled over a gearing, preferably a band drive. The gearing comprises devices for a possible manual activation of the entire motor drive through a hand crank, and furthermore devices for the mechanical limiting and/or locking of an end position. The arrangement is formed as a complete modular assembly group and is enclosed by an one-piece casing (1), in such way, that the casing is completely closed from above, below and at three of the four lateral surfaces. The gearing is arranged between drive shaft (2) and output shaft (3), in the interior of the casing, whereby upper and lower bearing (5, 7) of the drive shaft, as well as upper and lower bearing (9, 11) of the output shaft are arranged at the wall of the casing. All devices for the manual activation and for the mechanical limiting and/or locking of the end position are likewise arranged in the interior of the casing or in its wall.