Title:
振動発電用振動子
Document Type and Number:
Japanese Patent JP4213540
Kind Code:
B2
Abstract:
Unnecessary moment in a vibrator is remarkably reduced and the power generation efficiency in capacitance-type vibrational power generation is remarkably improved. A vibrator provided in a variable-capacitance type vibrator has a structure in that one ends of oscillation plates extending in a longitudinal direction thereof sandwiches a mass and the other ends thereof sandwiches a spacer, respectively, wherein the oscillation plates are arranged parallel to each other. A space portion between the oscillation plates and in which the mass and the spacer are not in contact with each other functions as a spring. By holding the mass by the two oscillation plates, the mass can be oscillated while it is in parallel to an opposing electrode. Therefore, generation of unnecessary moment in a direction other than an oscillation direction can be remarkably reduced.
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Inventors:
Hidetoshi Tanaka
Norio Okubo
Masafumi Kinyu
Norio Okubo
Masafumi Kinyu
Application Number:
JP2003295806A
Publication Date:
January 21, 2009
Filing Date:
August 20, 2003
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H02N2/00; B60L50/10; B61C9/38; H02N1/00; H02P9/04
Domestic Patent References:
| JP1198868A |
Attorney, Agent or Firm:
Yamato Tsutsui