Abstract:
A drive-end gear wheel is engaged by a drive disc through an intermediate cushion that accepts slave bars of the driving disc and reinforcement ribs of the drive-end gear wheel. The reinforcement ribs couple an inner hub with an outer ring gear flange of the drive-end gear wheel. The reinforcement ribs are formed with transition curves that uniformly transmit tangential and radial deformation stresses to the outer ring gear flange, ensuring reliable and durable operation of the drive gear.
Abstract:
In a motor-gear drive unit, particularly for automobile window lifters and the like, a moisture-tight closure of the gear case (2) is provided by a gear case cover (4). The cover (4) is preferably injection-molded from plastic and can be connected to the gear case (2) nonpositively by a press-fitted, insertable clamp fastening. Specifically, the clamp fastening takes the form of a peripheral web (4.1) capable of being pressed into a peripheral channel-like groove (2.2), where the peripheral web (4.1) and the peripheral channel-like groove (2.2) are provided, respectively, on either the case (2) or the cover (4). If the peripheral web (4.1) is provided on the cover (4), a peripheral scraping rib (4.11) is molded on the inside surface of the web (4.1). An elastic gasket layer (5) having a static sealing edge (5.1) is applied, e.g., injection-molded onto an outer surface of the peripheral web (4.1).