The present disclosure relates to an actuator for a brake device. The actuator includes a housing having a motor accommodating part and a gear accommodating part, a motor accommodated in the motor accommodating part, and a reduction device accommodated in the gear accommodating part, wherein the reduction device includes, a crossed helical gear reduction unit including a driving crossed helical gear coupled to a shaft of the motor, and a ring wheel provided with a driven crossed helical gear engaged with the driving crossed helical gear on an outer circumference thereof, and a planetary gear reduction unit including a sun gear rotating together with the ring wheel, a ring gear provided as an internal gear, a plurality of planetary gears engaged with the sun gear and the ring gear, and a carrier on which the plurality of planetary gears is rotatably supported and having an output shaft.

A venetian blind adjustment device includes a hollow bottom shell, a worm and worm wheel mechanism arranged in the bottom shell, an operation member, and a cover. The bottom shell includes two opposite sidewalls, and defines an opening in a top and between tops of the sidewalls. The worm and worm wheel mechanism includes a worm and a worm wheel. An end of the operation member extends into the bottom shell and is connected to the worm. The cover is mounted to the bottom shell to close the opening. Two ends of the worm wheel are rotatably mounted to the sidewalls of the bottom shell, and two limit hooks extend down toward the bottom shell from opposite sides of the cover, to abut against outer surfaces of the sidewalls, respectively.

A venetian blind adjustment device includes a hollow bottom shell, a worm and worm wheel mechanism arranged in the bottom shell, an operation member, and a cover. The bottom shell includes two opposite sidewalls, and defines an opening in a top and between tops of the sidewalls. The worm and worm wheel mechanism includes a worm and a worm wheel. An end of the operation member extends into the bottom shell and is connected to the worm. The cover is mounted to the bottom shell to close the opening. Two ends of the worm wheel are rotatably mounted to the sidewalls of the bottom shell, and two limit hooks extend down toward the bottom shell from opposite sides of the cover, to abut against outer surfaces of the sidewalls, respectively.

A rotary table (1) includes a base body (10), a worm wheel (21), an inner ring (22), a plurality of rolling elements, and a worm screw unit (30). The worm screw unit (30) includes a worm screw (31) held to be rotatable around an axis and having a second gear (31A) meshing with the first gear (215), and a worm screw housing (32) surrounding and holding the worm screw (31) and being fixed to contact the holding surface at a planar contacting surface thereof. One of the holding and contacting surfaces has a cylindrical pin (33) arranged to protrude therefrom. The other of the holding and contacting surfaces has a first recess (11) formed to receive the pin (33), the first recess having a width corresponding to the pin (33) and being elongated in the radial direction of the worm wheel (21).

A gear is provided that has excellent continuous moldability for practical use, and both high slidability and high durability. The provided gear is a molded resin constructed of a resin composition comprising a thermoplastic resin (A) and cellulose nanofibers (B) with an average fiber diameter of 1000 nm or smaller, and having a number average molecular weight of the thermoplastic resin (A) in the range of 10,000 to 150,000, wherein a sliding surface of the gear with another gear teeth has an arithmetic mean surface roughness Sa of 3.0 μm or lower.

A gear is provided that has excellent continuous moldability for practical use, and both high slidability and high durability. The provided gear is a molded resin constructed of a resin composition comprising a thermoplastic resin (A) and cellulose nanofibers (B) with an average fiber diameter of 1000 nm or smaller, and having a number average molecular weight of the thermoplastic resin (A) in the range of 10,000 to 150,000, wherein a sliding surface of the gear with another gear teeth has an arithmetic mean surface roughness Sa of 3.0 μm or lower.

The invention relates to an actuator mechanism (1) for adjusting the orientation of a mirror element in an exterior mirror unit of a vehicle. The mechanism comprises an electric motor (9, 10) with a driving shaft (11, 12), a drive train (13, 14), and a movable mirror adjusting element (5, 6) coupled via the drive train to the driving shaft of the electric motor. Also, the actuator mechanism comprises an actuator frame (2) which carries the electric motor, the drive train and the mirror adjusting element. The driving shaft of the electric motor is bearing mounted in the actuator frame.

A gear unit for a motor vehicle having a rotary bearing supporting a worm gear shaft, rotatable about an axially extending rotation axis, on a housing. The rotary bearing pivotable about a pivot axis and includes a spherical outer face and a stationary pivot ring. The gear unit includes a spring element extending tangentially or circumferentially, at least partially, around the rotation axis, and positioned such that one side engages the housing and the other side, through two axially protruding contact portions lying opposite each other in the direction of the pivot axis, engages the rotary bearing. The spring element includes a ring portion extending transversely to the axial direction and tangentially, at least partially, around the rotation axis.

A gear unit for a motor vehicle having a rotary bearing supporting a worm gear shaft, rotatable about an axially extending rotation axis, on a housing. The rotary bearing pivotable about a pivot axis and includes a spherical outer face and a stationary pivot ring. The gear unit includes a spring element extending tangentially or circumferentially, at least partially, around the rotation axis, and positioned such that one side engages the housing and the other side, through two axially protruding contact portions lying opposite each other in the direction of the pivot axis, engages the rotary bearing. The spring element includes a ring portion extending transversely to the axial direction and tangentially, at least partially, around the rotation axis.

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.