Shicoh Engineering Co., Ltd.

New Shicoh Technology Co., Ltd.

M-Link Co., Ltd.

Coreless Motor Co., Ltd.

Shicoh Motor (Shanghai) Co., Ltd.

Shicoh Co., Ltd.

Aisin Seiki Kabushiki Kaisha

Hitachi Metals, Ltd.

Kanegafuchi Chemical Industry Co., Ltd.

M. Gottlieb Assoc.

Sicoh Engineering Co., Ltd.

Manabu Shiraki

Osami Miyao

Junichi Tada

Naoki Sekiguchi

Akira Kitajima

Shuichi Omomo

Hiroshi Sato

Hiroyuki Amano

Tomoaki Nishimura

Masayuki Ohsaka

Katsumasa Shimizu

Tsutomu Shiraki

Satoshi Asakawa

Koji Toyama

Noriyuki Washio

Osamu Hamaguchi

Norimitsu Hirano

Kazuhiro Ichikawa

Morimasa Yoshie

Kazuo Suzuki

Sumio Ishii

Toru Ikeuchi

Shoji Fujisawa

Shunji Kawashima

Masayuki Fujiwara

Daishi Yamaguchi

Soota Komiya

Yasunobu Hiratsuka

Makoto Fujii

Kazuhito Egami

Katsu Okubo

Kikuo Shimazu

A coreless rotating electrical machine for being operated continuously comprises a stator including an energizable coreless cylindrical coil and a lid-type mount; and a rotor including a cup-type mount. The lid-type mount is equipped with a channel for supplying a refrigerant liquid to the air gap. The coreless rotating electrical machine is operated continuously by supplying the refrigerant liquid into the air gap, allowing the cylindrical coil, which generates heat, to vaporize the refrigerant liquid, cooling the cylindrical coil by latent heat of vaporization, and repeating an operation of supplying the refrigerant liquid to prevent a temperature of the cylindrical coil exceeding an allowable maximum temperature, and an operation of adjusting the supply of the refrigerant liquid to prevent the temperature of the cylindrical coil falling below a minimum temperature, so as to maintain the temperature in a range between the allowable maximum and minimum temperatures.

Coreless rotating electrical machine for being operated under load exceeding rating, driving method thereof, and driving system including thereof

One U-phase coil portion and the next U-phase coil portion in a circumferential direction, one V-phase coil portion and the next V-phase coil portion in the circumferential direction, and one W-phase coil portion and the next W-phase coil portion in the circumferential direction are electrically connected by conductive junctions, respectively.

Coil body

A coreless rotating electrical machine for being operated under load exceeding rated load, driving method thereof, driving system including thereof; coreless rotating electrical machine for being operated under load exceeding rated load, driving method thereof, driving system including thereof, in which air space including air gap is formed by stator consisting of lid-type mount which fixes end face of energizable coreless cylindrical coil and rotor consisting of cylindrical mount or cup-type mount opposingly and rotatably positioned to lid-type mount with plurality of magnets equipped on inner surface of cylindrical or cup-type mount, wherein when load exceeds the rating, operation is enabled by adjusting supply amount of refrigerant liquid so the temperature of cylindrical coil does not exceed allowable maximum temperature at rated operation; refrigerant liquid supplied to air space including air gap to allow cylindrical coil to vaporize refrigerant liquid to cool by latent heat of vaporization of refrigerant liquid.

A rotary electrical machine has a first annular body and a second annular body that face opposite each other with a coil interposed therebetween, either the first annular body or the second annular body being provided with a permanent magnet, the first annular body and/or the second annular body rotating about the axis of a rotating shaft, and the driving force of a motor being extracted through the rotating first annular body or second annular body or through the axis of the rotating shaft rotating with the rotating first annular body or second annular body.

Rotary electrical machine

A high performance rotating electrical machine which aims at downsizing, and challenges inevitable technical problems such as deterioration of efficiency &#x3b7; caused by copper loss and temperature rise inside the rotating electrical machine due to heat generation induced by eddy current generated in magnetic body.

Coreless rotating electrical machine with stator including cylindrical coil and cooling method therefor

Present invention relates to a high performance rotating electrical machine which aims at downsizing, and challenges inevitable technical problems such as deterioration of efficiency &#x3b7; caused by copper loss and temperature rise inside the rotating electrical machine due to heat generation induced by eddy current generated in magnetic body. Such technical problem may be solved by: opposingly arranging a rotorwith a cup-type mount, the rotorbeing integrated with magnetsequipped on an outer cylindrical air-channel forming body and an inner cylindrical air-channel forming body which forms an air gap where one of end faces of a cylindrical coil is arranged and being coupled to a driveshaft which penetrates a lid-type mount, with respect to a statorwith a lid-type mount rotatably coupled with the driveshaft, to which one of end faces of a cylindrically-shaped energizeable coreless cylindrical coil cylindrically formed using a laminate structure consisting of a few overlapping conductive metal sheets; feeding or intaking cooling medium or cooling air to an air gap formed in an inner surface of the cylindrical coil; and directly cooling an inner surface and outer surface of the cylindrical coil arranged in the air gap.

The present invention relates to a high performance rotating electrical machine which aims at downsizing, and challenges inevitable technical problems such as deterioration of efficiency &#x3b7; caused by copper loss and temperature rise inside the rotating electrical machine due to heat generation induced by eddy current generated in a magnetic body. Such technical problem may be solved by configuring a coreless rotating electrical machine as comprising a stator having a cylindrical coil of a laminate structure consisting of two-layer or four-layer conductive metal sheets and a lid-type mount which fixes one of end faces of the cylindrical coil, and a rotor having a cup-type mount opposingly positioned with respect to the lid-type mount, with an air gap formed by a bottom, an inner cylindrical air-channel forming body and an outer cylindrical air-channel forming body, in which the cylindrical coil is arranged as suspended, and a plurality of magnets equipped on the outer cylindrical air-channel forming body and/or the inner cylindrical air-channel forming body, the cup-type mount has intake holes leading to the second air space on the bottom and a plurality of exhaust holes leading to the air gap, positioned in a row around a circumference of the outer cylindrical air-channel forming body, close to the bottom, and/or a plurality of exhaust holes leading to the air gap, consisting of arrays in a lengthwise direction of the air gap, from the open end face to the bottom with equally spaced intervals on the circumference of the outer cylindrical air-channel forming body, wherein ambient air taken into the second air space and/or ambient air taken into the outer side of the cylindrical coil, under differential pressure generated around the rotor by rotation thereof, are configured to directly cool a plurality of the magnets exposed in the air gap and both surfaces of the cylindrical coil arranged in the air gap, and to be discharged from the exhaust holes of the rotating outer cylindrical air-channel forming body.

Coreless rotating electrical machine including stator comprising cylindrical coil and cooling method therefor

An autofocus camera is provided which restrains and corrects any tilt that may occur in the optical axis direction without the need of providing any additional new sensors for that purpose. The autofocus camera includes an image sensor for receiving light from an object and converting the light into corresponding electrical signals, a lens driving device having a lens for focusing the light from the object upon said image sensor, and a control portion for causing said lens driving device to adjust any tilt that may occur in the optical axis in response to the electrical signals received from said image sensor. The control portion is operated to cause the lens driving device to adjust any tilts of the optical axis with respect to the image sensor in the orthogonal directions with each other, so that the resolution signals at the predetermined positions of said image sensor can be maximized.

Lens driving device, camera, and camera-equipped electronic device

A driving member, a linear driving device using the driving member, a camera device and an electronic device are provided. The driving member () includes a deformable thin plate () having a flexible thin plate () capable of expanding and contracting itself under the applied voltage and an elastic thin plate () having at least one side thereof rigidly fixed to the flexible thin plate () and a driving shaft () having its one axial end rigidly fixed to the deformable thin plate () and being capable of undergoing displacements that are operatively associated with the deformation of the deformable thin plate (), wherein the driving shaft () has the lateral side portion () of the one axial end thereof rigidly fixed to the corresponding inner side portion of a through hole formed on the deformable thin plate ().

Driving member, linear driving device, camera device, and electronic device

Autofocus camera for adjusting tilt in the optical axis of a lens, and camera-equipped electronic device

The in-wheel motor for installation inside a wheel disk of a wheel includes: a cylindrical coil body; a coil body support member fixed to a shaft; an outer yoke that is disposed on an outer circumferential side of the coil body, and is fixed to a wheel disk; a cylindrical inner yoke that is disposed on an inner circumferential side of the coil body, and is rotatable around the shaft; and a magnet that is fixed on one of an inner circumferential face of the outer yoke and an outer circumferential face of the inner yoke, the magnet disposed to face a circumferential face of the coil body.

In-wheel motor and electrically driven vehicle

The in-wheel motor of the present invention includes: a cylindrical coil body; a coil body support member fixed to a shaft; an outer yoke that is disposed on an outer circumferential side of the coil body, and is fixed to a wheel disk; a magnet fixed on an inner circumferential face of the outer yoke; an inner yoke that is disposed on an inner circumferential side of the coil body, and is disposed to face the coil body. The outer yoke and the inner yoke are fixed, and are rotatable around the shaft; and a caliper is provided on an inner circumferential side of the inner yoke.

In the lens driving device of the present invention, at least two second coils are disposed at a 90 degree interval in a circumferential direction of a first coil wound around an outer circumference of a lens support in the circumferential direction, at least four magnets are provided at an inner circumferential side of a circumferential wall of a yoke and are provided at even intervals about the circumferential direction of the first coil, each magnet being provided so that an inner circumferential face is the same magnetic pole and opposes an outer circumferential face of the first coil, and in addition is opposite the second coil at the position of providing the second coil. When the lens support is moved in the optical axis direction, an electric current flows in the first coil, and when the lens support is moved in an X-Y direction orthogonal to the optical axis, a predetermined electric current flows in a predetermined second coil.

Lens driving device, autofocus camera and camera-equipped mobile terminal

A lens driving device, an autofocus camera and a camera-equipped mobile terminal are provided that can correct movement of a lens in an optical axis direction and tilt of an optical axis, and reduce the dimension thereof in the optical axis direction. The device includes: a lens supportfor supporting a lens at an inner circumference; a plurality of coilstodisposed at regular intervals in a circumferential direction on an outer periphery of the lens support; a basethat supports the lens supportso as to move freely in an optical axis direction of the lens; and a magnet portionprovided on the baseand facing each of the coilsto, in which an electric current of equal current value is applied to each of the coilstowhen moving the lens supportin the optical axis direction, and current values of the electric current applied to predetermined coilstoare varied when correcting tilt of the optical axis of the lens.

Lens driving device, autofocus camera, and camera-equipped mobile terminal

Growing community of inventors

Yamato, Japan

Manabu Shiraki