Power generation input device and electronic-apparatus using the power generation input device

Patent metadata

Field	Value
Publication number	US-8975766-B2
Application number	US-201213543562-A
Country	US
Kind code	B2
Filing date	Jul 6, 2012
Priority date	Jul 7, 2011
Publication date	Mar 10, 2015
Grant date	Mar 10, 2015

Abstract

First and second opposing ends are formed in a magnetic path forming member on which a power generation coil is wound. A rotating body has a permanent magnet, a first magnetization member and a second magnetization member. When an operating force does not act on an operating member, an end surface of the first magnetization member is opposed to the first opposing end via a gap and an end surface of the second magnetization member is opposed to the second opposing end via a gap. When the operating member is pressed, the rotating body rotates and when the force to the operating member is released, the operating member and the rotating body return. Since the rotating body and the magnetic path forming member do not come into contact with each other, the force required to operate the operating member is relatively weak and large electromotive force can be obtained.

First claim

What is claimed is:

1. A power generation input device comprising:
a magnetic path forming member comprising a magnetic material;
a first opposing end surface and a second opposing end surface that are a portion of the magnetic path forming member and opposed to each other with a space interposed in between;
a power generation coil wound on the magnetic path forming member between the first opposing end and the second opposing end;
a rotating body positioned in the space to…

Assignees

• Inada Yuji
• Suzuki Katsutoshi
• Alps Electric Co Ltd

Inventors

• Inada Yuji
• Suzuki Katsutoshi

Classifications

• H01F7/122 Primary

  Electricity · mapped topic

• H02M7/068

  Electricity · mapped topic

• H01F7/14

  Electricity · mapped topic