Fujitsu General Limited

Nec Corporation

Nissan Motor Company Limited

Yoichi Tanabe

Masaki Yamada

Tomonori Kojima

Hirokazu Matsuzaki

Masanori Murakami

Takushi Fujioka

Toshiaki Tanno

Hidetaka Terakubo

Shinichi Yamada

Yoshikazu Tanaka

Kenji Narita

Hisao Igarashi

Takayuki Shinohara

Shinichiro Katagiri

Takashi Suzuki

Kenta Suzuki

Yuichi Shibukawa

Atsushi Itagaki

Ken Maeyama

Toshihiko Yamada

Yoshitaka Kitajima

Takuya Hamano

Hiroaki Shibukawa

Tomohiro Kashiwagi

Yosuke Matsui

Rei Omata

Hiroo Kojima

There is provided an electric motor that can be downsized in a rotation axis direction and can also suppress the deformation of a bearing and a bearing house portion along with the deformation of a resin shell. The electric motor includes: a columnar rotor; a shaft disposed along a rotation axis of the rotor; a cylindrical stator core disposed on an outer circumferential side of the rotor; a resin shell that covers the stator core; a bearing that rotatably supports the shaft; and a bearing house portion that stores the bearing. The resin shell includes an annular portion integral with the stator core, and an end surface portion connected to an end portion of the annular portion and expanding from the annular portion to an inner circumferential side. The end surface portion includes a connection portion to be connected to the bearing house portion. The bearing house portion includes a tubular portion and a flange portion extending from an end of the tubular portion to the outer circumferential side in the radial direction. An outer circumferential edge portion of the flange portion is fixed to the connection portion of the resin shell.

Electric motor that can be downsized in a rotation axis direction

In a method for manufacturing an axial air-gap electronic motor, a plurality of core member and a plurality of dummy members are prepared, wherein each of the dummy members has a shape same as that of the core members. Then, the plurality of core members is arranged such that teeth surfaces of the core members face each other, and the dummy member is arranged between predetermined core members. Thereafter, a coil is wound from one end side toward the other end side of the core members through the dummy member continuously without cutting. A part of the coil corresponding to a transition wire set between the core members is wound on the dummy member.

Method for manufacturing an axial air-gap electronic motor

There is provided an electrical motor in which the dimensional accuracy of a stator is increased more easily, and the influence exerted on a magnetic circuit is kept as little as possible. In an electrical motor in which the statorformed with n number (n is a positive integer) of teethin a row in a straight line form is bent into an annular shape and the end parts thereof are connected to each other, the sum of opening angles &#x3b8; of a cutoutformed between segments of the statoris made larger than 360 degrees, and a minute clearance is formed between the opposed surfaces of the cutoutwhen the stator is bent into an annular shape.

Electrical motor

In an electric rotary machine, a stator, a metallic supporting member configured to support the stator, and a rotor are provided, the rotor is relatively rotatably supported with respect to the stator, a magnetic path is formed via a gap portion between the stator and the rotor to give a torque to the rotor, and a space section is provided to interrupt the magnetic path at a position of the metallic supporting member near to a magnetic pole of the stator facing the gap portion.

Electric rotary machine

A magnetic pre-pressurizing section for pre-pressurizing the inner ring of the bearing in the axial direction by a difference of magnetic forces of permanent magnets of the two rotors is arranged. The magnetic pre-pressurizing section is constructed by a difference of a magnetizing amount for forming permanent magnetsarranged in the respective rotors. The magnetic pre-pressurizing section is also constructed by a difference of distances of an air gap Lof a statorand a permanent magnet, and an air gap Lof the statorand a permanent magnet. The magnetic pre-pressurizing section is also constructed by a difference of thicknesses of the rotating axis direction of a permanent magnetand a permanent magnetarranged in the respective rotors.

Axial air gap type electric motor

In an axial air-gap electronic motor in which a teeth surface of a stator and a magnet surface of a rotor are arranged opposedly along the axis line direction of an output shaft of the rotor with a predetermined gap being provided therebetween, the stator has a plurality of core members connected in a ring form with the axis line being a center, and each of the core members is provided with a connecting device for connecting the teeth surfaces to each other in an opposed state. In order to shorten the wire winding time and reduce the assembling manpower for the core members, a stator is formed by connecting a plurality of core members in a ring form with the axis line being a center, and locking ribs are provided as connecting devices for connecting the core members to each other in a rod form along the axis line direction.

Axial air-gap electronic motor

In a baseband processing unit in a node-B, a path search circuit includes a path capture unit, path track transfer unit, and channel estimation unit, all of which are primarily provided for the path capture, channel estimation, and RAKE combination. In the baseband processing unit, a synchronization determination circuit includes a decoding unit provided for decoding RAKE-combined data and calculating an average SIR per wireless frame and a correction calculation unit primarily provided for reliably and stably detecting wireless frame synchronization. The processing time required to detect synchronization establishment during wireless frame synchronization determination is shortened.

Wireless base station, wireless frames synchronization detection method used therein, and recording medium on which program therefor is recorded

An axial gap electronic motor includes a stator and a rotor disposed opposingly with a predetermined gap. In order to provide an easy assembling operation of the stator, the stator includes a plurality of pole members annularly connectable. The annular stator core is obtained by connecting each of the pole members to which coil winding is previously applied.

Axial gap electronic motor

A non-instantaneous-disruption hard handover (HHO) control device includes a CFN generation block () for monitoring the state of a source baseband resource () and a destination baseband resource (), generating a CFN which autonomously configures a switch timing so as to enable non-instantaneous-disruption HHO, transferring CFN information to the source baseband resource () and destination baseband resource (). The device further includes HHO-information write-in/read-in blocks () for writing radio information of the source baseband resource (), transferring the radio information to the destination baseband resource (), and enabling continuous communication by using the radio information.

Non-instantaneous hard handover control device and method

An axial gap electronic motor includes a stator having a plurality of poles, and a rotor. Each pole is formed of a stator iron core made of a magnet body and a coil wound therearound. The rotor has a plurality of poles formed of permanent magnet and arranged along a rotation axis direction of said rotor with a predetermined gap provided therebetween. The stator has a magnetic force generating section in which a plurality of the stator iron cores is arranged in a ring shape on a concentric circle with the rotation axis line of the rotor being a center axis. Each of teeth of the stator iron core is provided with a skew.

Growing community of inventors

Kawasaki, Japan

Yoichi Tanabe