The invention relates to a shifting device for a motor vehicle transmission, comprising a first coupling component, a second coupling component rotatable about a transmission axis (A), an inner friction ring which has a conical surface on a radially outer face, an outer friction ring which has a conical surface on a radially inner face, and an intermediate friction ring which comprises a friction cone and is connected to the second coupling component for joint rotation with and for axial displacement with respect to the second coupling component, whilst the inner friction ring and the outer friction ring are connected to the first coupling component for joint rotation with and for axial displacement with respect to the first coupling component. The friction cone extends between the conical surfaces of the inner friction ring and outer friction ring, the coupling components being decoupled in the rotation direction in an axial starting position of the outer friction ring and being coupled in a frictional fit in the rotation direction in an axial frictional fit position of the outer friction ring. The intermediate friction ring has a C-shaped ring cross section extending peripherally in the circumferential direction, comprising a radially outer linear cone limb which forms the friction cone and comprises two substantially parallel conical friction surfaces, and comprising a radially inner linear axial limb which is integrally connected to the cone limb by a radial web.

An engine power unit for a vehicle has a crankcase made up of tow left and right crankcase members, and a lubricant feed pump disposed in one crankcase member in such a fashion that one side surface of pump rotors of the feed pump lies on the mating surface of the crankcase members. The feed pump is mounted on one end of the shaft of the feed pump while a drive gear for rotating the shaft is disposed on the opposite end of the shaft. A lubricant oil filter to which oil is delivered from the feed pump is disposed on the other crankcase member. Thus, the structure for supplying lubricating oil is simplified, and the power unit is reduced in size in its entirety.

A gear device includes a first gear, a second gear, and a third gear. The second gear is offset eccentrically when the first gear is rotated. The third gear is rotated at a speed slower than a rotation speed of the first gear when the second gear is offset eccentrically. The stopper plate is engaged with the second gear through a fitting structure thereby restricting rotational movement of the second gear while permitting linear movement of the second gear. One of the second gear and the stopper plate includes an engagement claw. The other one of the second gear and the stopper plate includes a recess engaged with the engagement claw. The engagement claw includes a grease sump that holds grease applied between the recess and the engagement claw.

A transmission device is provided in which a support shaft is supported by a carrier, has planetary gears, supports the planetary gears, and is provided with an oil hole and a discharge hole communicating with the oil hole and having an outer end opening on the support shaft, wherein the support shaft has the oil hole, a discharge hole having an inner end communicating with the oil hole and having an outer end opening on the support shaft, and an engagement part provided on one end portion of the support shaft, the other end portion of the support shaft is fixed to the carrier, and a to-be-engaged part is provided on the transmission member, the engagement part engaging with the to-be-engaged part for positioning the support shaft at a position in which the outer end of the discharge hole faces outward in a radial direction of the carrier.

The invention relates to a lubricating device for controlling lubrication in a stepped transmission comprising a splitter section (10, 20) with an input shaft (I) and a main gear section (30, 40, 50, 60) with an output shaft (O) and a countershaft (C); where the splitter section (10, 20) comprises a first splitter gear set (10) connectable to the input shaft (I) by a first gear shift mechanism (23); and a second splitter gear set (20) connectable to the input shaft (I) by the first gear shift mechanism (23); and connectable to the output shaft (O) by a second gear shift mechanism (33). A lubrication arrangement for the second splitter gear set (20) is arranged to be controlled by the current positions of the first and the second gear shift mechanisms (23, 33); wherein the lubrication arrangement is controlled to at least reduce lubrication when the first and the second gear shift mechanisms (23, 33) are simultaneously connected to or disconnected from the second splitter gear set (20).

A transmission includes a rotating shaft, a sleeve configured to rotate around an axial center of the rotating shaft, a fork engaged with an external circumference of the sleeve, and a shift shaft disposed parallel to the rotating shaft and supporting the fork. The fork includes a support part supported by the shift shaft, a first arm part extending from the support part in a circumferential direction of the rotating shaft and disposed above the sleeve, and an oil receiving part disposed on the first arm part. The oil receiving part has an elongated hole that extends in a direction perpendicular to an axial direction of the rotating shaft as seen in a top view.

A planet gear support shaft includes a cylindrical body that is open at both ends in a central axis direction. The cylindrical body has an inlet port through which lubricating oil is introduced into a hollow portion of the cylindrical body, and a discharge port through which the lubricating oil introduced into the hollow portion is discharged, the inlet port and the discharge port being open to an inner peripheral surface of the hollow portion at different positions in the central axis direction. An oil guide groove is provided between a first opening of the inlet port and a second opening of the discharge port in the inner peripheral surface. The oil guide groove is configured to guide the lubricating oil between the first opening and the second opening.

A transmission device is provided in which a support shaft is supported by a carrier, has planetary gears, supports the planetary gears, and is provided with an oil hole and a discharge hole communicating with the oil hole and having an outer end opening on the support shaft, wherein the support shaft has the oil hole, a discharge hole having an inner end communicating with the oil hole and having an outer end opening on the support shaft, and an engagement part provided on one end portion of the support shaft, the other end portion of the support shaft is fixed to the carrier, and a to-be-engaged part is provided on the transmission member, the engagement part engaging with the to-be-engaged part for positioning the support shaft at a position in which the outer end of the discharge hole faces outward in a radial direction of the carrier.

Provided is a transmission device including a transmission unit housed inside a transmission case with an oil storing part at a bottom part of the transmission case. As viewed in a projection plane orthogonal to a rotation axis of the transmission unit, an oil capturing part is arranged in a semicircle part of an outer circumferential wall of the transmission case. The semicircle part starts at a deepest part of the oil storing part and is positioned on a front side in a normal direction of a carrier.

The invention relates to a lubricating device for controlling lubrication in a stepped transmission comprising a splitter section (10, 20) with an input shaft (I) and a main gear section (30, 40, 50, 60) with an output shaft (O) and a countershaft (C); where the splitter section (10, 20) comprises a first splitter gear set (10) connectable to the input shaft (I) by a first gear shift mechanism (23); and a second splitter gear set (20) connectable to the input shaft (I) by the first gear shift mechanism (23); and connectable to the output shaft (O) by a second gear shift mechanism (33). A lubrication arrangement for the second splitter gear set (20) is arranged to be controlled by the current positions of the first and the second gear shift mechanisms (23, 33); wherein the lubrication arrangement is controlled to at least reduce lubrication when the first and the second gear shift mechanisms (23, 33) are simultaneously connected to or disconnected from the second splitter gear set (20).