Mitsubishi Electric Corporation

Beckman Coulter, Inc.

National Institute for Materials Science

Murata Manufacturing Co., Ltd.

Olympus Corporation

W.l. Gore & Associates, Co., Ltd.

Naoki Ohashi

Isao Sakaguchi

Koichi Ojima

Tetsuya Abe

Hajime Haneda

Masaya Inoue

Ryuichi Kitora

Akihiro Yamamura

Keiichi Konishi

Kiyoshi Shimamura

Encarnacion Antonia Garcia Villora

Koichi Shimizu

Sakyo Hirose

Shoichiro Nishitani

Hideki Yoshikawa

Takamasa Ishigaki

Kazuyuki Iwamoto

Takashi Sekiguchi

Keisuke Murase

Takafumi Namba

Kiyoaki Kobayashi

Haruki Ryoken

Yutaka Adachi

Tadashi Takenaka

Hiroyuki Taguchi

Takeshi Ohgaki

Ken Kataoka

Takafumi Nanba

Provided is a rotary electric machine that is able to suppress vibration noise of the rotary electric machine caused by an out-of-plane deformation. The rotary electric machine includes a stator including a frame being an annular member, and a plurality of split cores arranged in an annular shape and fitted to and held by a radially inner portion of the frame, wherein the frame is formed such that an inner diameter of each of both end portions thereof is smaller than an inner diameter of an axial middle portion thereof, and fitting fastening force between the frame and each split core is set to be greater at both the end portions than at the axial middle portion.

Rotary electric machine

The rotary electric machine includes: a stator that includes: a stator core; and a stator coil; a ring member that accommodates the stator so as to hold the stator core in an internally fitted state; a housing case formed into a floored cylindrical shape with an opening at a first end portion, and that accommodates the ring member and the stator; and a cover mounted onto the first end portion of the housing case so as to cover the opening of the housing case, wherein a first end portion of each of the ring member and the housing case is fixed by fastening to the cover such that a fastening direction of each is oriented in an axial direction, and a second end portion of the ring member is fitted into and held by the housing case by means of an interfitting member.

A piezoelectric material for a combustion pressure sensor, a method for producing the piezoelectric material, and a combustion pressure sensor using the piezoelectric material are provided. The piezoelectric material of the present invention includes a single crystal containing Ca, Ta, an element M (M is Al or Ga), Si, and O, the single crystal has the same crystal structure as the crystal structure of langasite represented by LaGaSiO, and at least the content of the element M is insufficient for the stoichiometric composition represented by CaTaMSiO. Preferably, in a case where the element M is Ga, each content of the Ca and the Si is excessive for the stoichiometric composition, and in a case where the element M is Al, the content of the Ca is excessive for the stoichiometric composition, and the content of the Ta is insufficient for the stoichiometric composition.

Piezoelectric material, method for producing the same, piezoelectric element and combustion pressure sensor

This invention is concerning a rotary electric machine, this electric motorbeing provided with an inner cylinder, a rotorprovided so as to be rotatable inside the inner cylinder, a statorfixed to the inner cylinderand separated via a gap from an outer periphery of the rotor, and an outer cylinderthat covers an entire periphery of the inner cylinderand forms a space, which serves as a coolant passage, in conjunction with the inner cylinder, wherein both ends of the inner cylinderand the outer cylinderin an axial direction are fixed to each other by cylinder welding portionsformed by welding. Accordingly, a rotary electric machine that is small and light can be obtained at low cost.

In the rotary electric machine according to the present invention, a first O-ringis mounted between a pair of position regulating membersthat are press-fitted onto and held in a vicinity of a second axial end of an outer circumferential surface of a stator core housing portionso as to be spaced apart in an axial direction, and is pressed and held between the stator core housing portionand a cylindrical portion, and a second O-ringis mounted into an O-ring housing groovethat is recessed into an outer circumferential surface of a frame mounting portion, and is pressed and held between the frame mounting portionand the cylindrical portion, such that a coolant channelis formed between the frameand the cylindrical portion

Provided is a stator for rotating electric machine that enables reduction in imbalance of compression stress on a stator core between a thin portion due to formation of a cooling passage of a frame and a thick portion where there is no cooling passage. This stator for rotating electric machine includes: a stator coreformed in a cylindrical shape; and a framehaving an inner circumferential side to which the stator coreis fitted and fixed with a predetermined interference, and an outer circumferential side on which a passagefor cooling fluid for cooling the stator coreis formed, wherein the interference at a thin portion A due to formation of the cooling passage, of the frameis greater than the interference at a thick portion B where there is no cooling passage

Stator for rotating electric machine fixed to frame with predetermined interference

In the rotary electric machine, bus-bar lead terminals of bus bars, which are held by a connection component, are formed in such a way that the bus-bar lead terminals are protruded from the bus bars to an axis direction of a stator, and a plurality of bus-bar storage grooves are formed by using a plurality of partitions which are concentrically arranged in a diameter direction of the stator via gaps, and in the plurality of partitions, lengths, in the axis direction, of the most outer circumference partition, which is positioned at the most outer circumference side in the diameter direction, and the most inner circumference partition, which is positioned at the most inner circumference side in the diameter direction, are longer than lengths, in the axis direction, of a plurality of middle partitions, which are positioned between the most outer circumference partition and the most inner circumference partition.

Rotary electric machine and manufacturing method thereof

A cooling structure for cooling a stator core of a rotating electrical machine includes: a stator core () arranged along an outer periphery of a rotor fixed to a rotary shaft (AX) of a rotating electrical machine; a stator frame () extending along an outer peripheral surface of the stator core (), the stator frame being configured to fix and support the stator core from the outer peripheral surface side thereof; and a motor case () having small-diameter end portions on both sides in an axial direction of the rotary shaft (AX), the small-diameter end portions being welded with airtightness onto an outer peripheral surface of the stator frame so that the motor case forms a space, which is the coolant flow path (CC), together with the outer peripheral surface of the stator frame.

Cooling structure for cooling a stator core of a rotating electrical machine and method of manufacturing the cooling structure

A resistance switching device having a high resistance variation ratio, an excellent response characteristic, an excellent resistance memory characteristic (retention characteristics) and an excellent repeat resistance. The resistance switching device comprises an n-type oxide semiconductor and first and second electrodes which are disposed so as to interpose at least a part of the n-type oxide semiconductor therebetween wherein a Schottky junction which provides resistance variation/memory characteristics by the application of voltage having different polarities between the first and second electrodes is formed at an interface between the n-type oxide semiconductor and the first electrode; and the first electrode is positioned such that it is in contact with the n-type oxide semiconductor, and has a lower layer which is formed from Au oxide or a Pt oxide or Au or Pt containing oxygen having the thickness of 1-50 nm.

Resistance switching device and process for producing thereof

The objective is to prevent the flange of a ring member for holding the stator core from enlarging the diameter of a rotating electric machine and to eliminate a screwing space and a pedestal portion in the housing case so as to suppress the weight of the rotating electric machine from increasing; one end of the ring member for holding the stator core protrudes from the outer circumference of the stator core toward the rotation axle and the ring member is fixed to the cover or the housing case at the protruding portion.

Stator-core fixing structure for rotating electric machine

In a carbon black (CB)/PTFE composite porous sheet that can be used as a gas diffusion layer in an electrochemical device in applications involving electro chemical reaction such as a polymer electrolyte fuel cell, electrolysis, gas sensor and the like, wrinkle or breakage may be produced due to its flexibility. A method is provided which makes it possible to easily handle this sheet that is difficult to handle, without giving rise to wrinkle or breakage. The present invention relates to a method for laminating the composite sheet on MEA, comprising the steps of:

Method for laminating composite sheet using release film, laminate obtained by the method, and release film for use in the method

A sealing member includes a sealing portion that is used for a cap attached to a reagent container and covers an opening of the cap with an open-close movement by flapping around a predetermined point. The sealing portion has, on an outer circumference in the predetermined point side, an extending portion that extends outward of the opening. The extending portion contacts with an upper edge of the opening when the sealing portion covers the opening.

Sealing member, cap for reagent container, and reagent container

Provided is an opening-and-closing mechanism that can be latched at a predetermined opening angle, wherein the latching can be disengaged with a small force in the opening direction whereas the latching is gradually disengaged in the closing direction. An opening-and-closing mechanism includes first and second supporting members disposed relatively rotatable around a rotary axis; a plurality of protruding portions provided on the first supporting member; and a plurality of depressed portions provided on the second supporting member and engaged with the plurality of protruding portions, wherein, when the first and second supporting members are in a plurality of predetermined relative alignments, some of the plurality of protruding portions and some of the plurality of depressed portions are engaged, and wherein forces required for disengaging the protruding portions and the depressed portions by rotating at least one of the first and second supporting members differ first and second rotation directions.

Opening-and-closing mechanism and latching mechanism

A zinc oxide semiconductor has a zinc oxide-based laminated structure including two layers of a zinc oxide layer with a lattice volume of Va and a donor concentration of Na, and a zinc oxide or zinc oxide solid solution layer with a lattice volume of Vb and a donor concentration of Nb. The relationships of Va&#x3c;Vb and Na&#x3e;Nb are satisfied. The layer with the lattice volume Va serves as a charge-supplying layer and the layer with the lattice volume Vb serves as a charge-receiving layer in the laminated structure. The charge is transferred from the layer serving as the charge-supplying layer to the layer serving as the charge-receiving layer even when no external electric field is applied to the laminated structure. A charge depletion layer is formed in the charge-supplying layer due to charge transfer from the charge-supplying layer to the charge-receiving layer.

Zinc oxide-based multilayer structural body and its producing method

The present invention provides an opening-and-closing mechanism capable of reducing a falling momentum due to gravitational force of a lid that is opened and closed past the top in the perpendicular direction and easily raising the lid against the gravitational force. The opening-and-closing mechanism includes two supporting members () and an intermediate member () disposed so as to be relatively rotatable about a rotation axis; a first damper (R), disposed between a first one of the supporting members () and the intermediate member (), for generating resistance against rotation during relative rotation of the two supporting members () in one direction; a second damper (L), disposed between a second one of the supporting members () and the intermediate member (), for generating resistance against rotation during relative rotation of the two supporting members () in another direction; and rotation-restricting portions (R,L) for restricting relative rotation ranges of the two supporting members () and the intermediate member ().

Growing community of inventors

Tokyo, Japan

Naoki Ohashi