Title:
VIBRATION POWER GENERATION DEVICE
Document Type and Number:
Japanese Patent JP2015033266
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To effectively prevent generation of collision noise in compact configuration in a vibration power generation device configured to generate an induction electromotive force while utilizing vibration in a vertical direction.SOLUTION: A magnetic circuit unit 40 which is disposed to surround a coil holder 30, is suspended and supported relatively to a case 20 via a coil spring 12 and by vibrating the magnetic circuit unit 40 in a vertical direction, an induction electromotive force is generated in a conductive coil 32 which is supported by the coil holder 30. In that case, clearances C1 and C3 between the magnetic circuit unit 40 and the coil holder 30 are set to values smaller than clearances C2 and C4 between the magnetic circuit unit 40 and the case 20. Thus, the magnetic circuit unit 40 is prevented from being abutted with the case 20, and loud collision noise is prevented from being generated. Further, the need of a countermeasure such as depositing an impact absorption tape to an inner peripheral surface of the case 20 is eliminated, and the case 20 is prevented from being enlarged.
Inventors:
KATO KISHUN
FUKAI YOSHIAKI
FUKAI YOSHIAKI
Application Number:
JP2013162652A
Publication Date:
February 16, 2015
Filing Date:
August 05, 2013
Export Citation:
Assignee:
STAR MFG CO
International Classes:
H02K35/02
Domestic Patent References:
| JP2008543254A | 2008-11-27 | |||
| JP2012165581A | 2012-08-30 |
Foreign References:
| WO2007121367A2 | 2007-10-25 |
Attorney, Agent or Firm:
Moriyama 隆
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