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Patent Searching and Data


Title:
VOLTAGE JUDGMENT METHOD, VOLTAGE JUDGMENT PART, POWER CUT-OFF METHOD, AND POWER CUT-OFF DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/124807
Kind Code:
A1
Abstract:
A voltage judgment method for judging whether a voltage exceeds a predetermined value includes: a diode preparation step for preparing a diode having Zener voltage substantially identical to a predetermined value; a bimetal preparation step for preparing a bimetal capable of changing its state from a normal temperature state to a high temperature state by receiving heat generated from the diode; a B contact preparation step for preparing a B contact changing from the current-supplied state to the non-current-supplied state which is interlocked with the change of the bimetal from the normal temperature state to the high temperature state; a first circuit preparation step for preparing a first circuit having a conductive material bridged on a pair of terminals for receiving the heat generated from the diode so as to be melted and cut off when a predetermined temperature is reached; and a voltage application step for applying voltage in the reverse direction to the diode. With this configuration, it is possible to provide a voltage judgment method, a voltage judgment part, a power cut-off method, and a power cut-off device having a simple configuration and performing reliable operation.

Inventors:
KUSHITA OSAMI (JP)
Application Number:
PCT/JP2005/011193
Publication Date:
December 29, 2005
Filing Date:
June 13, 2005
Export Citation:
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Assignee:
BIMETAL JAPAN INC (JP)
KUSHITA OSAMI (JP)
International Classes:
H01H37/14; H01H37/54; H02H5/04; H02H7/18; H02H3/08; (IPC1-7): H01H37/14; H01H37/54; H02H5/04; H02H7/18
Foreign References:
JP2002540756A2002-11-26
JP2001514435A2001-09-11
JPH02237437A1990-09-20
JPH01105430A1989-04-21
JPS59159846U1984-10-26
JP2001520858A2001-10-30
JPH0287935A1990-03-28
Attorney, Agent or Firm:
Kozuka, Toshiki (2nd Floor, Aoki-Bldg. 4-9, Monzennakacho 2 chom, Koto-ku Tokyo, 135-0048, JP)
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