Auger and worm wheel type mechanical speed reducer for use in motor vehicle, has clearance retrieving body including primary cup engaged against bearing of auger and secondary cup positioned against bore of casing

摘要

The reducer has an auger (2) arranged inside a casing (6). A clearance retrieving elastic element is connected to a bearing (8) of the auger. The element constitutes a clearance retrieving body (9) i.e. helicoidal spring elastically deformed in axial direction and in transversal direction. The body is arranged along a central axis (A) of the auger. The body comprises a primary rigid cup (11) engaged against the bearing of the auger located opposite to a driving body i.e. shaft (4), and a secondary rigid cup (12) positioned against a bore (14) of the casing.