Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Terasu Harashima

Koichi Tanaka

Naoki Kato

Hiroshi Hamaguchi

Yoshihiko Sasaki

Atsushi Teshima

Shintaro Goto

Shinji Oita

Yusuke Ohgata

Rikiya Kubo

Masayuki Fukai

Megumi Fujikawa

Shundou Yamaguchi

A power transmission device includes a first power transmission path that is provided between an engine and a driving wheel, and a second power transmission path that is provided between the engine and the driving wheel and that is provided in parallel with the first power transmission path. The first power transmission path includes a first clutch and a secondary clutch that is arranged on the driving wheel side with respect to the first clutch. The second power transmission path includes a continuously variable transmission and a second clutch. The secondary clutch is configured to make a changeover between a first mode and a second mode.

Power transmission device for vehicle

A vehicle power transmission device includes: a first power transmission member including a cylindrical shaft end portion rotatably supported via a first bearing on an inner circumferential side of a non-rotating support wall; and a second power transmission member supported on the inside of the cylindrical shaft end portion via a second bearing radially overlapping with the first bearing by the cylindrical shaft end portion to be rotatable concentrically and relatively to the first power transmission member, the second power transmission member including a circular disc gear portion protruded to an outer circumferential side at a predetermined distance from the second bearing in a shaft center direction of the second power transmission member, at a portion facing the first bearing, the gear portion having an annular inner circumferential guide protruding portion for guiding to the first bearing a lubricant oil that passes through the second bearing for lubrication, that enters into a gap between the second bearing and the gear portion, and that travels to the outer circumferential side due to the centrifugal force.

Vehicle power transmission device

PROBLEM TO BE SOLVED: A lubrication structure of a power transmission apparatus is provided with a lubricating liquid transport pipe for cooling a rotating electrical machine used to allow a lubricated member positioned axially outwardly of the rotating electrical machine to be lubricated in the axial direction. SOLUTION: A lubrication structure comprises an oil pipehaving discharge nozzlespositioned vertically above coil endsand discharge nozzlesaxially outwardly of the discharge nozzlein juxtaposed relationship with each other at the other axial end portion of the oil pipe, and a guide memberradially extending between the discharge nozzlesin the axial direction of a motor M and having a radially inner peripheral portion covering bearings. The guide memberhas a guide rib extending axially outwardly of a flange portionto guide the oil discharged from the discharge nozzlein the axial direction. A coverhas a cylindrical portioncovering the upper surface of a bearing. The cylindrical portionis formed with an oil passagefor guiding the oil guided by the guide ribto one axial end portion B of the bearing

Lubrication structure of power transmission apparatus

A vehicle oil pump that is driven by a drive gear provided on a rotating shaft that rotates in one direction when a vehicle travels forward and rotates in the opposite direction when the vehicle travel backward includes a first driven gear that is in mesh with the drive gear and provided on a drive shaft of the vehicle oil pump via a first one-way clutch, an idler gear that is in mesh with the drive gear, and a second driven gear that is in mesh with the idler gear and provided on the drive shaft of the vehicle oil pump via a second one-way clutch. The first one-way clutch is configured to transmit rotation of the first driven gear to the drive shaft when the vehicle travels in one direction, from among forward and backward, and the second one-way clutch is configured to transmit rotation of the second driven gear to the drive shaft when the vehicle travels in the other direction, from among forward and backward.

Vehicle oil pump

A wave spring holding structure includes a wave spring that includes crest portions and recessed portions that are alternately formed in a circumferential direction thereof, and a first gap; a circular member provided to be rotatable around an axis; and an arc-shaped snap ring that includes a second gap, and that restricts movement of the circular member in a direction of the axis. The wave spring and the snap ring share the axis with the circular member. The wave spring and the snap ring are rotatable with respect to each other. The wave spring is disposed and held between the circular member and the snap ring so that the crest portions protrude toward the circular member, and the recessed portions protrude toward the snap ring. The first gap is formed in one of the crest portions.

Wave spring holding structure and frictional engagement apparatus

An annular frictional engaging piston includes an annular pressure apply portion which pushes a frictional engagement element in an axial direction against urging force of a return spring that urges in a direction opposite the frictional engagement element, and which has a cutout portion where a portion in the circumferential direction has been removed to avoid interference between the piston and another member. A partially removed region is provided, and a mounting hole for mounting the return spring on the piston is provided in a region other than the partially removed region.

Frictional engaging piston and spring seat

A frictional engagement apparatus is provided. The frictional engagement apparatus includes a first frictional engagement unit, a second frictional engagement unit disposed axially spaced from the first frictional engagement unit, and one case that supports the first and the second frictional engagement units non-rotatably circumferentially but shiftably axially relative thereto. One retaining ring is fitted to the case so as to be located between the first and second frictional engagement units. The retaining ring is abutted to the nearest first friction plate and/or the second friction plate to stop an approaching shift of the first frictional engagement unit and/or the second frictional engagement units. The retaining ring includes a u-shaped cross section defined by an annular recess that extends in a circumferential direction of the retaining ring at a radially interior portion of the retaining ring.

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Toyota, Japan

Terasu Harashima