Sumida Corporation

Motomi Takahashi

Mitsugu Kawarai

Tsutomu Otsuka

Tomohiro Kajiyama

Shinichi Sakamoto

Juichi Oki

Teruaki Tanaka

Satoru Yamada

Kazuyuki Kikuchi

Juichi Ooki

Fumio Uchikoba

Kentaro Masuda

A manufacturing method of a coil component comprising the steps of: preparing a coil assembly body in which a coil is attached on a magnetic core and a mold body which is formed with a cavity portion in the inside thereof and which includes at least one opening portion, putting a viscous admixture including magnetic powders and thermosetting resin and the coil assembly body in the cavity portion, pushing the put-in viscous admixture in the mold body, and thermally-curing the pushed-in viscous admixture and forming a magnetic exterior body which covers the coil assembly body.

Manufacturing method of coil component and coil component

An electronic component includes; a magnetic-body core having a plate-shaped portion and a core portion which extends from an upper surface of the plate-shaped portion; a winding wire which includes a wound portion wound by a rectangular wire into an Edgewise winding form and two non-wound portions extending from the wound portion to two distal ends, and the core portion is inserted through the wound portion; and a magnetic exterior body which covers at least the wound portion and the core portion. The two non-wound portions are respectively arranged along a bottom surface and at least one of the side surfaces of the plate-shaped portion. Parts of the two non-wound portions arranged along the bottom surface are electrodes.

Electronic component

Provided are a small electronic component including: a magnetic core including at least a columnar core part; a winding coil arranged so as to surround an outer peripheral surface side of the columnar core part and formed by winding a winding wire; and a magnetic cover part formed so as to cover at least part of the magnetic core and the winding coil while following at least part of shapes of the magnetic core and the winding coil through use of a magnetic material containing a mixture of a phosphoric acid ester-based surfactant, magnetic powder, and a resin, an electronic circuit board using the small electronic component, and a method of manufacturing a small electronic component.

Small electronic component, electronic circuit board, and method of manufacturing small electronic component

An ultrasonic motor () includes a vibrator () and an application means (oscillation circuit). A first vibrator area () and a second vibrator area (), which form a vibrator (), include piezoelectric elements polarized in the thickness direction, and fixed portions () respectively. The oscillation circuitapplies an AC voltage to the piezoelectric elements respectively and makes the first vibrator area () and the second vibrator area () resonate individually in the surface-spreading directions. The ultrasonic motor () includes a coupling portion () for coupling vibration end portions () each other and a contact element () which is provided on this coupling portion (). The vibration end portions () are positions which vibrate respectively in the approaching and separating directions by the resonances of the first vibrator area () and the second vibrator area () in the surface-spreading directions with respect to the fixed portions ().

Ultrasonic motor

Growing community of inventors

Natori, Japan

Motomi Takahashi