Title:
無線給電式電気機器
Document Type and Number:
Japanese Patent JP6839604
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless power supply type electric apparatus which can perform a predetermined operation stably by reliably preventing an excessive temperature of an electric apparatus.SOLUTION: A wireless power supply type electric apparatus 10 has a power receiving portion 20 externally receiving power by wireless power supply, and performs a predetermined operation by the received power. The power receiving portion 20 has a power receiving coil 25 which is cylindrical with conducting wire 21 wound and receiving power supplied through a magnetic flux from an outside transmission antenna and generating heat, and a temperature-sensitive magnetic body member 30 arranged inside the power receiving coil 25 and having a characteristic of reducing a magnetic permeability by a temperature rise. When the power receiving coil 25 receives power and generates heat, the magnetic permeability of the temperature-sensitive magnetic body member 30 is reduced, and when receiving power of the power receiving coil 25 is reduced, the magnetic permeability of the temperature-sensitive magnetic body member 30 rises.SELECTED DRAWING: Figure 2
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Inventors:
Toshihiro Kimura
Application Number:
JP2017093380A
Publication Date:
March 10, 2021
Filing Date:
May 09, 2017
Export Citation:
Assignee:
Piolux Co., Ltd.
International Classes:
H02J50/12; A61B1/00; A61B1/018; A61N1/378; H02J7/00; H02J7/04
Domestic Patent References:
| JP2007082690A | ||||
| JP2009125100A | ||||
| JP6063154A |
Foreign References:
| US20020183829 |
Attorney, Agent or Firm:
Creation International Patent Office
Shigeru Matsui
Shigeru Matsui