Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Rikiya Kubo

Koichi Tanaka

Yoshihiko Sasaki

Koichi Nakamura

Masaki Yoshida

Hiroshi Hamaguchi

Tatsuya Kawamura

Terasu Harashima

Katsutoshi Shimizu

Hiroya Mizuta

Yusuke Kojima

Ryuta Horie

A hybrid drive device that includes an input member drivably coupled to an internal combustion engine; a speed change device; a rotary electric machine disposed side by side with the speed change device in an axial direction and including a rotary shaft coupled to an input shaft of the speed change device; a case that houses the rotary electric machine and the speed change device; an intermediate support member disposed between the rotary electric machine and the speed change device in the axial direction and configured to rotatably support the rotary shaft and the input shaft; and a fastening bolt that fixes the intermediate support member to the case.

Hybrid drive device

A differential includes a pinion shaft holder, a differential case, a first side gear, a second side gear, a first spring and a second spring. The differential case includes a first side boss portion and a second side boss portion. The first spring is interposed between the first side boss portion and the first side gear. The second spring is interposed between the second side boss portion and the second side gear. A recessed portion is provided on the pinion shaft holder and is configured to avoid interference with an auxiliary tool. The auxiliary tool maintains one of the first spring and the second spring in the compressed state.

Differential and differential assembly method

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 power transmission device includes: an input shaft; a planetary gear type speed reducer disposed concentrically to the input shaft to reduce and output rotation input to the input shaft; and a differential gear device disposed adjacently to the input shaft in a shaft center direction, the differential gear device being rotationally driven by the speed reducer to transmit a drive force to a pair of axles disposed on the shaft center while allowing a rotational difference between the axles, the speed reducer including a sun gear that is fit with a shaft end portion of the input shaft in a relatively non-rotatable manner, the sun gear being prevented from relatively moving toward the differential gear device by an annular snap ring fit and attached to an annular snap ring groove formed on an outer circumferential surface of the shaft end portion of the input shaft on the differential gear device side of the sun gear, the differential gear device including a differential case having a cylindrical end portion formed on the sun gear side or a member fixed thereto that is extended to the outer circumferential side of the snap ring, the differential case having a radial distance of an annular gap formed between the cylindrical end portion or the member fixed thereto and the snap ring set smaller than a groove depth of the snap ring groove.

Vehicle power transmission device

Growing community of inventors

Okazaki, Japan

Rikiya Kubo