Honda Motor Co., Ltd.

Takashi Wakui

Shinji Kato

Masahiro Imai

Motoshi Togasaki

Yasuhiro Fujita

Fumiya Nishii

Noriyuki Yagi

Kentaro Fukui

Masaru Sora

Taku Ueda

Kazuki Sakurai

A power transmission device includes: a first rotation member; a first rotation shaft supporting the first rotation member; and a case rotatably supporting the first rotation shaft, in which the case includes a rotation member accommodation chamber accommodating the first rotation shaft and the first rotation member, a first storage portion provided at a bottom portion of the rotation member accommodation chamber and configured to store a lubricating liquid such that a portion of the first rotation member is immersed therein, and a second storage portion provided above the first rotation shaft in the rotation member accommodation chamber and configured to store the lubricating liquid.

Power transmission device

A drive unit includes a drive motor, a drive unit case having a motor chamber in which the drive motor is accommodated, a heat exchanger which cools a cooling fluid for cooling the drive motor, and a storage portion which stores the cooling fluid. The drive unit case is formed with a buffer chamber separated from the motor chamber and adjacent to the motor chamber. The buffer chamber is divided from the motor chamber by a dividing wall. The storage portion is provided at a position isolated from the motor chamber with the buffer chamber interposed therebetween.

Drive unit having a buffer chamber that separates a motor chamber from a storage portion

A stator includes a cylindrical stator core having a plurality of slots, and a plurality of coils having segment conductors inserted through the plurality of slots and extending in axial direction, a coolant flow channel through which coolant flows is formed between outer circumferential surface of the segment conductor and inner circumferential surface of the slot, the outer circumferential surface of the segment conductor includes first flat surface facing radial direction, second flat surface facing circumferential direction, and a corner portion curved surface connecting the first flat surface and the second flat surface, the corner portion curved surface includes first curved surface continuous with the first flat surface and second curved surface continuous with the second flat surface, and when seen in cross-sectional view perpendicular to the axial direction, radius of curvature of the first curved surface is greater than radius of curvature of the second curved surface.

Stator and rotary electric machine

A power transmission device includes: a planetary gear mechanism; and a case accommodating the planetary gear mechanism, in which the planetary gear mechanism includes an input shaft, a sun gear, a plurality of planetary gears, a planetary carrier, and a ring gear, the sun gear is an external gear provided on the input shaft, a gear member is attached to one end of the input shaft, a baffle plate extending between the gear member and the sun gear is attached to the case, and at least a part of the gear member and the planetary gear mechanism is immersed in a lubricating liquid stored in a lower portion of the case.

A dynamoelectric machine includes: a winding; a stator core including a slot in which the winding is installed; a cover part that covers the stator core; and a crossing part that is a space formed between the cover part and the stator core, wherein, in the crossing part, an end portion of the winding in an axial direction is exposed, and a filling member is disposed between a side surface of the winding in a radial direction and an inner side surface of the cover part in the radial direction.

Dynamoelectric machine having a structure for coolant which enters a micro gap between windings

A rotating electric machine includes a rotor and a stator. The rotor includes: a rotor core having a refrigerant flow path; and an end surface plate arranged at least on one side of the rotor core. The refrigerant flow path includes: a first refrigerant flow path; and a second refrigerant flow path which is disposed further on a radial inner side than the first refrigerant flow pat. The stator includes: a stator core; and a coil end portion protruding from at least one side of the stator core. The end surface plate includes: a root side refrigerant supply portion which communicates with the first refrigerant flow path and supplies the refrigerant to a root region of the coil end portion; and a distal side refrigerant supply portion which communicates with the second refrigerant flow path and supplies the refrigerant to a distal region of the coil end portion.

Growing community of inventors

Saitama, Japan

Takashi Wakui