Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Katsunari Takagi

Masaya Inoue

Yoshihiko Onishi

Teruhiko Moriguchi

Yoshiaki Kitta

Koichi Ojima

Manabu Yoshinori

Kazuhisa Kurita

Tadashi Murakami

Soichi Sato

Hiromichi Tsugami

Yukitaka Sakata

Keisuke Shimomura

Kenji Nakao

Takeshi Sugiyama

Shuzo Isozumi

Hiroyuki Higashino

Takuya Uryu

Ryuji Kitamura

Tomohiro Bessho

In order to efficiently cool a stator and rotor of a rotating electrical machine, cooling oil is supplied by a pump in a pressurized state to a first reservoir portion provided in an upper portion inside a housing, and after the cooling oil is ejected from the first reservoir portion, the cooling oil is guided to a stator coil end cooling structure, and to a rotor bearing and rotor core cooling structure, using the weight of the cooling oil itself.

Rotating electric machine

An electric rotating machine that can raise the utilization efficiency of cooling oil is obtained. In an rotation axle, there are provided an oil flow path having a predetermined length from an end of the rotation axle and a flow path hole that communicates with the oil flow path and has an opening toward the inside of the electric rotating machine; a supporting member includes a cylinder section and a disk section that partitions the cylinder section in the axis direction, and a discharging hole is provided at an end of the cylinder section; between the flow path hole and the discharging hole, there is provided a partition plate that encloses a space formed by the supporting member and the rotation axle and guides cooling oil traveling from the flow path hole to the inside of the electric rotating machine to the discharging hole.

Apparatus for cooling an electric rotating machine

Provided is an electric motor capable of cooling a stator without being increased in size with a small number of components and even with simple work. The electric motor includes ring-shaped sealing members () having flexibility and being arranged on an inner diameter side of a stator coil () so as to surround inner diameter portions of coil ends. Cooling oil flowing from an upper part of a housing into the housing flows downward through coil end oil paths () formed by the sealing members (), coil end covers (), and the coil ends.

Rotary electric machine

An insulator includes: a trunk portion that is interposed between a tooth and a stator coil; and a first flange portion that is disposed on the trunk portion so as to be adjacent to the stator coil in a radial direction of a stator core. A notch portion is disposed on a flange protruding portion of the first flange portion that protrudes from the stator core in the axial direction of the stator core from an outer circumferential portion of the flange protruding portion toward the trunk portion. A holder that has a holder main body that is disposed on the notch portion is mounted onto the flange protruding portion. A temperature sensor is held between the holder main body and the stator coil.

Rotary electric machine with a pair of interfitting portions, rotary electric machine stator, and rotary electric machine stator manufacturing method

In the rotary electric machine, a cylinderof a ring componentis formed in such a way that a fitting outer surfaceof the cylinderof the ring componentis fitted to a fitting inner surfaceof a first housing; a clearance value between the fitting outer surface of the cylinder and a fitting inner surface of the first housing is lower than a clearance value between an outer surface, in which the fitting outer surface is excepted, of the cylinder and an inner surface, in which the fitting inner surface is excepted, of the first housing; and a position in a diameter direction of a stator corefacing to the first housing is set by above-described fitting process.

In a rotary electric machine, a cylindrical stator core holding frame is cantilevered on a housing. A cylindrical stator core is fitted together and held inside the stator core holding frame. The stator core holding frame includes: a flange portion that is fixed to the housing; and a frame cylindrical portion that is coupled to the flange portion, and that holds the stator core. A thickness of the flange portion is greater than a thickness of the frame cylindrical portion.

An throttle body for rotating a valve shaft of an air-intake throttle valve through a decelerating mechanism by a motor and change the opening area of an air-intake passage by rotating the valve shaft is equipped with a lever portion that is disposed so as to be interlocked with the decelerating mechanism and regulates the opening degree of the air-intake throttle valve under the full-open state, and an adjusting screw that is threadably inserted from the outside of the body portion and abuts against the lever portion in the body portion to change the opening degree of the air-intake throttle valve under the full-open state.

Throttle body for internal combustion engine

A rotation angle detection apparatus is capable of preventing an eddy current and radio wave noise from being transmitted from outside to a yoke and a permanent magnet through a metal plate, and thence to a non-contact sensor through radiation as it is. The apparatus includes a yoke, a permanent magnet that is arranged on an inner wall surface with magnetic flux flowing from its N pole to its S pole through an inner space thereof, a metal plate formed integral with the yoke and the permanent magnet through a resin by insert molding, and a non-contact sensor arranged in the inner space of the permanent magnet. Between the metal plate and the individual end faces of the yoke and the permanent magnet, there is interposed a high impedance member that prevents radio wave noise from flowing from the metal plate to the yoke and the permanent magnet.

Rotation angle detection apparatus

An intake throttle valve apparatus comprising a throttle valve () including a housing (), a valve shaft () rotatably supported within the housing () and a valve element () fixed on the shaft () for changing an opening area of an intake passage (), a reduction gear train () operatively coupled to the throttle valve (), and an electric motor () coupled to the gear train () so that a driving force of the driving motor () is transmitted to the valve shaft () through the gear train () for changing the opening area of the intake passage () by rotating the valve element (). The gear train () includes an output gear () secured to a motor shaft () of the motor () and an input gear () secured to the valve shaft () at one end and directly meshing with the output gear ().

Intake throttle valve apparatus

A throttle valve controller for an internal combustion engine in which a ring gear comprises a core body having rigidity and a synthetic resin tooth portion integrated with the core body to improve the engagement accuracy of the ring gear and reduce costs.

Growing community of inventors

Tokyo, Japan

Katsunari Takagi