Geared drive unit

摘要

The invention relates to a geared drive unit (10), in particular a window-lifter drive, comprises a drive-side gear element (11) rotatably mounted in a gear housing (15), by means of which gear element a drive torque can be transmitted to at least one driving element (25, 26) of an output-side coupling element (20). Further, a load torque block is provided, by means of which a torque initiated by the output-side coupling element (20) via the at least one driving element (25, 26) can be blocked, wherein the load torque block comprises a blocking element (42), preferably in the form of a wrap spring, which interacts with an element that is non-rotatably mounted in the gear housing (15) to block the torque. According to the invention, the non-rotatably mounted element is simultaneously constructed as a radial bearing for the drive-side gear element (11).

主权项

1. A geared drive unit (10), comprising a drive-side gear element (11) rotatably mounted in a gear housing (15), by means of which gear element a drive torque can be transmitted to at least one driving element (25, 26) of an output-side coupling element (20), and comprising a load torque block, by means of which a torque initiated by the output-side coupling element (20) via the at least one driving element (25, 26) can be blocked, wherein the load torque block comprises a blocking element (42), which interacts with an element that is non-rotatably mounted in the gear housing (15) to block the torque, characterized in that the non-rotatably mounted element also functions as a radial bearing for the drive-side gear element (11), wherein the non-rotatably mounted element is a brake drum (34) made from metal or plastic material and the gear element is a spur gear (11) made from plastic material, and wherein the brake drum (34) is configured substantially in the form of a sleeve or cup and serves with an outer wall (35) thereof as a bearing for the spur gear (11) and with an inner wall thereof as a bearing for the blocking element (42).