A gear unit for a motor vehicle having a drive shaft extending axially and mounted rotatably, and a worm gear shaft which cooperates with a worm gear wheel. A torque-transmitting coupling connects the drive shaft to one end of the worm gear shaft with the other end supported by a bearing. A pretension element loads the bearing and correspondingly the worm gear shaft so the worm gear shaft is biased or pressed against the worm gear wheel. The torque-transmitting coupling provides a suitable connection between the drive shaft and worm gear shaft.

A gear unit for a motor vehicle including a rotatable worm gear shaft rotating about a rotation axis and cooperating with a worm gear wheel in an engagement region spaced from the rotation axis. A pivotable rotary bearing mounts the worm gear shaft on a housing on one side of the engagement region and a loose rotary bearing, pretensioned in the direction of the spacing axis, mounts the other side in the housing. A support device supports the pivotable rotary bearing on the housing in the direction of the rotation axis. To optimize engagement between a worm gear shaft and a worm gear wheel, the pivotable rotary bearing pivots relative to the housing about a pivot axis perpendicular to the rotation axis and to the spacing axis. A support point of the support device is offset relative to the rotation axis along the spacing axis towards the engagement region.

A gear unit for a motor vehicle including a rotatable worm gear shaft rotating about a rotation axis and cooperating with a worm gear wheel in an engagement region spaced from the rotation axis. A pivotable rotary bearing mounts the worm gear shaft on a housing on one side of the engagement region and a loose rotary bearing, pretensioned in the direction of the spacing axis, mounts the other side in the housing. A support device supports the pivotable rotary bearing on the housing in the direction of the rotation axis. To optimize engagement between a worm gear shaft and a worm gear wheel, the pivotable rotary bearing pivots relative to the housing about a pivot axis perpendicular to the rotation axis and to the spacing axis. A support point of the support device is offset relative to the rotation axis along the spacing axis towards the engagement region.

A gear unit for a motor vehicle including an axially extending worm gear shaft, rotatable about a rotation axis, and cooperating with a worm gear wheel. The worm gear shaft supported, on one side of the worm gear wheel, through a first rotary bearing, on a housing and on the other side by of the worm gear wheel by a second rotary bearing loaded such that the worm gear shaft is pretensioned against the worm gear wheel. To optimize worm gear shaft and worm gear wheel engagement the first rotary bearing pivots or tilts relative to the housing, with deformation of at least one return element about a tilt axis perpendicular to the rotation axis. The return elements supporting the first rotary bearing on the housing in the axial and radial direction.

A gear unit for a motor vehicle including an axially extending worm gear shaft, rotatable about a rotation axis, and cooperating with a worm gear wheel. The worm gear shaft supported, on one side of the worm gear wheel, through a first rotary bearing, on a housing and on the other side by of the worm gear wheel by a second rotary bearing loaded such that the worm gear shaft is pretensioned against the worm gear wheel. To optimize worm gear shaft and worm gear wheel engagement the first rotary bearing pivots or tilts relative to the housing, with deformation of at least one return element about a tilt axis perpendicular to the rotation axis. The return elements supporting the first rotary bearing on the housing in the axial and radial direction.

A worm gear drive mechanism (1) having a housing (8), a rotatably mounted worm gear (4) and a worm shaft (2) rotatably mounted at at least one bearing point (7), wherein the bearing point (7) has a displacement element (10) for displacing the axial spacing (17) between the gear axis of rotation (6) of the worm gear (4) and the shaft axis of rotation (5) of the worm shaft (2).

A worm gear drive mechanism (1) having a housing (8), a rotatably mounted worm gear (4) and a worm shaft (2) rotatably mounted at at least one bearing point (7), wherein the bearing point (7) has a displacement element (10) for displacing the axial spacing (17) between the gear axis of rotation (6) of the worm gear (4) and the shaft axis of rotation (5) of the worm shaft (2).

A drive (1) with a housing (2) and a toothed part (4) which is mounted rotatably relative thereto with a wire race bearing (15), wherein a threaded ring (23) is screwed onto the housing (2) or the toothed part (4), said threaded ring axially fixing the wire race bearing (15) and permitting an adjustment.

A drive (1) with a housing (2) and a toothed part (4) which is mounted rotatably relative thereto with a wire race bearing (15), wherein a threaded ring (23) is screwed onto the housing (2) or the toothed part (4), said threaded ring axially fixing the wire race bearing (15) and permitting an adjustment.

A gearbox assembly for an electric power assisted steering apparatus includes a gearbox housing, a worm shaft, a main bearing assembly, and a first fulcrum means. The worm shaft may be supported relative to the housing by a main bearing assembly at an end closest to the motor. The main bearing assembly may include an inner ring defining an inner bearing race, an outer ring defining an outer bearing race, and a plurality of bearings that run between the two races. The first fulcrum means may be located on a first side of the main bearing assembly which reacts only the axial component of the wormshaft tooth load for a first direction of gearwheel torque. A second fulcrum means may be located on a second, opposing, side of the main bearing assembly, which reacts only the axial component of the wormshaft tooth load for the second direction of gearwheel torque.