A compact geared reduction unit for application with transmission shaft subjected to radial loads, comprising a box-like body inside which a gear system is accommodated for the transmission of rotary motion from a driving shaft to a transmission shaft, which is provided with an output reduction stage of the epicyclic type; the output reduction stage comprises a driving sun gear which rotates about a main axis and a ring gear which is integrally associated with the box-like body, between which multiple planet gears are engaged which are supported in rotation about respective longitudinal axes which are parallel to the main axis by a transmission planet carrier, which in turn rotates about the main axis and is associated so as to be integral in rotation with the transmission shaft at a connection region. The reduction unit furthermore provides for rolling means adapted to support radial loads associated with the transmission shaft.

Provided is an apparatus for supplying lubricant to a timing chain installed in an engine, the apparatus including an injection hole configured for injecting lubricant from an oil pump, and an inner cover having a guide groove configured to receive lubricant injected from the injection hole and guide the lubricant toward a engagement place between the timing chain and a sprocket, wherein the inner cover has a guide groove provided at a position facing an injection hole of a counter surface portion that is spaced apart from a cylinder block and faces the guide groove.

A drive includes a housing, an adapter plate, and a cover hood. A flat support surface is provided on the housing, e.g., for placement of the cover hood, and the adapter plate is attached to the housing. A first sealing ring, e.g., an O-ring, is received on the outer circumference of the adapter plate and is arranged between the cover hood and the cover plate, e.g., for sealing. A second sealing ring, e.g., an O-ring or a flat sealing ring, is received and/or attached to the side of the adapter plate facing the support surface, and the second sealing ring is arranged between the adapter plate and the support surface, e.g., for sealing.

A drive includes a housing, an adapter plate, and a cover hood. A flat support surface is provided on the housing, e.g., for placement of the cover hood, and the adapter plate is attached to the housing. A first sealing ring, e.g., an O-ring, is received on the outer circumference of the adapter plate and is arranged between the cover hood and the cover plate, e.g., for sealing. A second sealing ring, e.g., an O-ring or a flat sealing ring, is received and/or attached to the side of the adapter plate facing the support surface, and the second sealing ring is arranged between the adapter plate and the support surface, e.g., for sealing.

A rotary actuator includes a motor, a speed reducer configured to output after reducing a rotation of a rotary shaft of the motor, and a housing accommodating the motor and the speed reducer. The rotary actuator includes a bearing having an inner ring fixed to the rotary shaft and rotatably supporting the rotary shaft, and a cylindrical outer ring fixing portion integrally provided on the housing so as to fix an outer ring of the bearing. A front housing has a jig insertion hole into which an inner ring receiving jig can be inserted, and the jig insertion hole has an opening that overlaps with at least a part of one end surface of the inner ring in view from an axial direction.

A joint shaft structure includes: a base member; an output shaft member supported on one side of the base member so as to be rotatable; and a strain wave gear reducer rotating the shaft member relative to the base member by transmitting rotation of a motor to the shaft member while reducing the speed of the rotation. The reducer includes: a wave generator fixed to a shaft rotated by a driving force from the motor; a flexspline having, at one end, an elastic part which includes a plurality of external teeth and inside which the generator is fitted; and a ring gear disposed on a radially outer side of the flexspline and fixed to the shaft member, and having internal teeth meshing with the external teeth. The flexspline is fixed to the base member at the other end disposed farther on the base member side than the elastic part.

A motor is to be mounted on a vehicle as a drive source. The motor includes a motor shaft extending in an axial direction, a drive gear provided on the motor shaft, a gear shaft extending in the axial direction, a driven gear provided on the gear shaft and coupled to the drive gear, a rotating member, an inner bearing that supports the gear shaft, and an outer bearing that supports the gear shaft. The rotating member is provided on the gear shaft and is configured to be coupled to a power transmission member that transmits power to a wheel of the vehicle. The rotating member is located between the inner bearing and the outer bearing in the axial direction.

A motor is to be mounted on a vehicle as a drive source. The motor includes a motor shaft extending in an axial direction, a drive gear provided on the motor shaft, a gear shaft extending in the axial direction, a driven gear provided on the gear shaft and coupled to the drive gear, a rotating member, an inner bearing that supports the gear shaft, and an outer bearing that supports the gear shaft. The rotating member is provided on the gear shaft and is configured to be coupled to a power transmission member that transmits power to a wheel of the vehicle. The rotating member is located between the inner bearing and the outer bearing in the axial direction.

A driving source assembly includes: a prime mover including a driving shaft; a continuously variable transmission including a CVT case; a first gear that is between the prime mover and the CVT case and rotates together with the driving shaft; a second gear that is meshable with the first gear; an energy converter including a rotating shaft that rotates in association with the second gear; and a plate which is fixed to the prime mover and to which the energy converter is fixed. The first gear is between the plate and the CVT case. The CVT case includes a recess that defines an auxiliary accommodating space accommodating the first gear. The seal is between the recess and the plate.

A driving source assembly includes: a prime mover including a driving shaft; a continuously variable transmission including a CVT case; a first gear that is between the prime mover and the CVT case and rotates together with the driving shaft; a second gear that is meshable with the first gear; an energy converter including a rotating shaft that rotates in association with the second gear; and a plate which is fixed to the prime mover and to which the energy converter is fixed. The first gear is between the plate and the CVT case. The CVT case includes a recess that defines an auxiliary accommodating space accommodating the first gear. The seal is between the recess and the plate.