Title:
VIBRATION-POWERED GENERATOR
Document Type and Number:
WIPO Patent Application WO/2015/140959
Kind Code:
A1
Abstract:
This invention makes a vibration-powered generator more compact and expands, relative to existing vibration-powered generators, the range of frequencies over which a desired generating efficiency can be obtained. This vibration-powered generator contains the following: a permanent magnet that can vibrate axially within a frame; a coil laid out in a fixed manner within said frame, which faces the outside of the permanent magnet; two spring mechanisms provided on the axial ends of the permanent magnet via a guide rod; and a magnetic bearing that allows the guide rod to slide axially. The aforementioned vibration-powered generator is provided, in the axial direction, with a plurality of movable units each comprising a permanent magnet, a guide rod, and a magnetic bearing and further contains a joining spring that joins said movable units in the axial direction via a spring mechanism that can extend and contract. A resonant frequency is individually set for each movable unit via the selection of the respective spring constants of the joining spring and the spring mechanisms.
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Inventors:
NOMURA HIROMORI (JP)
Application Number:
PCT/JP2014/057525
Publication Date:
September 24, 2015
Filing Date:
March 19, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC ENG (JP)
International Classes:
H02K35/02
Domestic Patent References:
| WO2007121380A2 | 2007-10-25 |
Foreign References:
| JP2012249442A | 2012-12-13 | |||
| JP2013055714A | 2013-03-21 | |||
| JP2006333688A | 2006-12-07 | |||
| JP2009118581A | 2009-05-28 |
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)
Michiharu Soga (JP)
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