Mitsubishi Electric Corporation

Shizuka Ueda

Yoshinori Miyamoto

Shinichiro Yoshida

Yuji Kubo

Takeshi Musha

Yoshitomo Nakamura

Takuya Noguchi

Masanori Nimura

Hisanori Torii

Hitoshi Hasegawa

Akira Yokoyama

Toshio Mekata

The present disclosure includes: a magnetic member configured to cause a large Barkhausen effect; a power generation coil disposed so as to be wound around the magnetic member; and soft magnetic members formed at both end portions of the magnetic member so as to be in contact with the magnetic member and so as to press the magnetic member. Consequently, evenness of a magnetic flux density inside the magnetic member is increased, and the large Barkhausen effect is stably caused, whereby a highly stable power generation element is obtained.

Power generation element, and magnetic sensor, encoder, and motor using the same

A power generation element includes a magnetic member that produces a large Barkhausen effect and magnetism collection members including an insertion part having the magnetic member inserted therethrough. The magnetism collection member includes a first component on an opposite side of a boundary plane to a magnetic field generation unit and a second component on the same side of the boundary plane as the magnetic field generation unit, the boundary plane passing through a center of an imaginary circle inscribed in the insertion part and having a diameter equal to a length of the insertion part in a third direction perpendicular to first and second directions, the first direction is a direction of the insertion of the magnetic member, and the second direction is a direction in which the magnetic field generation unit is disposed. A volume of the second component is larger than a volume of the first component.

Power generation element, magnetic sensor, encoder, and motor

Growing community of inventors

Tokyo, Japan

Shizuka Ueda