GEAR REDUCER HAVING A SEALING PLUG PROVIDING AXIAL SUPPORT TO A SPRING FOR GEAR SLACK COMPENSATION

摘要

The invention relates to a gear reducer (1) for an assisted-steering module, including a casing (3), a worm (4) which meshes with a worm wheel (6), and a spring (10) for taking up gear play, which presses said worm (4) radially against the worm wheel (6), the wall of the casing (3) being bored, away from of the axis (XX′) of the worm, with an opening (14) sealed by a plug (15), the spring (10) for taking up gear play including at least one retaining lug (17, 18) which projects radially to the axis (XX′) of the worm (4), and the hub (20) of the plug (15) having a guiding wall (21) that is substantially transverse to the axis (XX′) of the worm (4), which is designed to be placed axially opposite said at least one retaining lug (17, 18), in order to prevent the axial movement of the spring (10) beyond a predetermined functional travel.

主权项

1. A gear reducer comprising
a casing, a worm which is rotationally mounted in said casing by at least one first bearing, such as a ball bearing, and which meshes with a worm wheel, and a gear slack compensation spring interposed between the casing and the first bearing in order to press said worm radially against the toothing of the worm wheel, wherein a wall of the casing is bored, in an extension of an axis of the worm, with an opening blocked by a plug, wherein the gear slack compensation spring comprises at least one retaining lug which protrudes radially to the axis of the worm and the hub of the plug has a guiding wall substantially transverse to the axis of the worm, which is designed to be placed axially facing said at least one retaining lug, in such a manner as to cooperate with said at least one retaining lug for preventing the axial displacement of the spring beyond a predetermined functional travel.