Hitachi, Ltd.

Hitachi Automotive Engineering Co., Ltd.

Hitachi Automotive Systems, Ltd.

Other

Hitachi Car Engineering Co., Ltd.

Hatachi Ltd

Hitachi Astemo Ltd.

Mitsuaki Mirumachi

Yoshinori Fukasaku

Masamichi Yagai

Takashi Ishigami

Osamu Koizumi

Masashi Kitamura

Shin Onose

Takashi Yokoyama

Toshiyuki Innami

Kenichi Nakayama

Toshiaki Ueda

Tomohiro Fukuda

Katsuhiko Hashimoto

Yutaka Matsunobu

Shinichi Fujino

Hisaya Shimizu

Hideo Tatsumi

Hiromitsu Okamoto

Kazuo Ojima

Susumu Yamazaki

Tsuyoshi Goto

Takashi Genmoto

Tomohiro Adachi

Kou Ajima

Hiroaki Mizoguchi

Hiroshi Matahira

Masamichi Kase

Mitsuo Ujiie

Dai Nakamura

The coil ends in a rotating electric machine are to be made smaller in size. A stator coilinserted into a slotin a stator of a rotating electric machine is formed with segment coilsconnected to one another. In the stator coil, the segment coilseach include an insulating coated portion coated with an insulating coating, and a slitor a recess is formed in the insulating coated portion of each of the segment coilsat a coil end. The slitor the recess is preferably formed between a diagonal conductor portionD and a conductor-end straight portionE of each segment coil

Stator coil, stator including said stator coil, and rotating electric machine including said stator

A rotating electric machine having downsized coil ends is provided. In a rotating electric machine having a statorincluding a stator coreformed with a plurality of slotsrowed in a circumferential direction and a stator coilinserted into the slots of the stator core, and a rotordisposed rotatably with respect to the stator core with a clearance interposed therebetween. The stator coil is formed by a plurality of segment coilsbeing connected, the segment coilsbeing made of a conductor shaped into a rough U-shape and having a rectangular cross-section. The segment coil has at an end a connection portionconnected to another segment coil, the connection portion having a corner portion

Rotating electric machine including a stator with a connection portion having a corner portion and method for manufacturing same

A small-sized motor for electric power steering, in which coil connection can be easily performed with space saving, and a method for manufacturing the motor. Multi-phase stator coils assembled in a stator coil are connected per phase by connecting rings at coil ends of the stator coils. A bus bar supplied with electric power from the exterior is stacked onto the connecting rings in the axial direction of the motor and is electrically connected to the connecting rings.

Motor for electric power steering and method for manufacturing the same

A stator of a rotating electric machine includes a stator core, and multiphase stator coils incorporated in the stator core. The stator core is formed by connecting a plurality of split core pieces. Each of the stator coils is wound around a coil bobbin installed on the outer periphery of the tooth portion of a respective one of the core pieces, by a concentrated winding method; and around mutually adjacent tooth portions, the respective coils that have the same phase and mutually different in the winding direction are continuously wound. A crossover wire for connecting the first stator coil wound around the first tooth portion and the second stator coil wound around the second tooth portion, is located at a position further toward the central side in the axial direction of the coil bobbin than the end portion of the coil bobbin, inclusive of this end portion.

Production method for rotating electric machine and stator coils, and electric power steering motor

The stator core of a motor comprises an annular back core, and a plurality of tees created separately from the back core and secured onto the inner periphery of the back core. A stator coil is wound on each of the tees by a distributed or concentrated winding method. The stator core and stator coil are formed by molding.

DC brushless motor for electrical power steering and the production method thereof

A permanent-magnet type brushless motor has a rotor which is made by integrally forming a rotating magnetic pole comprising a cylindrical multi-pole anisotropic magnet, a shaft and an elastic insulating supporting member having rigidity lower than at least that of the shaft. The multi-pole anisotropic magnet causes its magnetic flux to flow to form the closed magnetic circuit, thereby eliminating the necessity of forming the closed magnetic circuit using an inner stator core in the magnet required for the radial anisotropic magnet. A cylindrical casing holding therein a stator core.

Anisotropic magnet brushless motor having a rotor with elastic insulating support structure

A motor 2 has a motor flange 6 for supporting the weight of the motor and is installed on a blower casing 5. The motor flange 6 has a dimension in the radial direction of the motor which is smaller than the outer diameter of the fan 1 and extends in the radial direction of the motor 2 from an outer peripheral portion of the motor 2. A motor casing 5 is formed by a flange portion 5a having an outside installing portion 5m and an inside supporting portion 5n, and a cylindrical shaped housing portion 5b. The outside installing portion 5m has a dimension in the radial direction of the motor which is larger than the outer diameter of the fan 1 and the inside supporting portion 5n has a dimension in the radial direction of the motor which is smaller than the outer diameter of the fan 1. The motor 2 is installed on the blower casing 4 through the outside installing portion 5m of the motor casing 5. Due to the configuration of the housing portion 5b, a space s is formed which establishes a non-contacting condition between the inner peripheral portion of the housing portion 5b and the outer peripheral portion of the motor 2, except for the motor flange 6, and the motor 2 is enclosed outside of the blower casing 4 by the housing portion 5b.

Blower apparatus having a casing and motor flange having noise reducing

To accomplish conflicting goals of weight and noise reduction in a small motor, a plastic motor case with a flange is divided into two parts in the axial direction and an elastic body is mounted between the motor body and motor case so as to absorb vibration. A thin end bracket and motor housing can be used and not only for weight reduction but also for noise reduction can be realized.

Miniature motor and fan using the same

A blower of an automotive air conditioner has a lower casing a part of which is formed is a plastic housing for a motor and a porous member in the form of a flat plate disposed at a position where the plastic housing and an upper casing of the blower abut against each other. An air layer is defined between the flat-plate porous member and the lower casing to add a muffling function.

Noise reduced centrifugal blower

A centrifugal fan with a noise suppressing arrangement includes a fan, a motor for rotating the fan and a scroll casing for accommodating the fan, the scroll casing is formed of a first scroll casing member covering the fan and a second scroll casing member forming the bottom part of the scroll casing, the second scroll casing member being provided with at the center thereof a cylindrical housing for holding the electric motor, and further includes a porous sound absorbing member having elasticity sandwiched and secured between the first scroll casing member and the second scroll casing member whereby the combination of the porous sound absorbing member and an air layer formed between the porous sound absorbing member and the inner bottom wall of the second scroll casing member suppresses noises caused by rotation of the fan.

Centrifugal fan with noise suppressing arrangement

A blower unit for an automobile air conditioner including a fan for introducing air through an air intake unit and for forcibly discharging air introduced to a casing of the automobile air conditioner through a discharge opening. A scroll casing includes a side wall, arranged around the fan, and a bottom wall closing the side wall. The side wall of the scroll casing is formed in a shape symmetrical about a center line thereof with the center line being parallel to an air streamline in the vicinity of the discharge opening. The side wall has opposed facing ends at the discharge opening. A nose member is mounted within the scroll casing close to one of the opposed facing ends of the side wall.

Blower unit for automobile air conditioner

Growing community of inventors

Hitachinaka, Japan

Mitsuaki Mirumachi