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Title:
CONTACT MECHANISM OF SMALL SWITCH FOR BLOCKING DIRECT-CURRENT
Document Type and Number:
Japanese Patent JP2014194862
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a contact mechanism of a small switch for blocking a direct-current capable of reliably extinguishing arc by minimizing arc.SOLUTION: A first auxiliary contact piece 2 is arranged on a stationary contact 1, and a second auxiliary contact piece 5 is arranged on a movable contact piece 3 having a movable contact 4. A resistor 6 contacting the first auxiliary contact piece 2 and the second auxiliary contact piece 5 when the stationary contact 1 comes into contact with the movable contact 4 is arranged. When the stationary contact 1 and the movable contact 4 start an opening operation, the first auxiliary contact piece 2, the second auxiliary contact piece 5 and the resistor 6 maintain a contact state, and the stationary contact 1 and the movable contact piece 3 are conducted via the resistor 6, so as to restrain arc generated between the stationary contact 1 and the movable contact 4.

Inventors:
TANAKA YUKIHISA
TANAKA KATSUHIRO
Application Number:
JP2013070230A
Publication Date:
October 09, 2014
Filing Date:
March 28, 2013
Export Citation:
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Assignee:
NKK SWITCHES CO LTD
International Classes:
H01H9/42; H01H1/06; H01H13/02; H01H15/02; H01H23/02
Domestic Patent References:
JPS59221916A1984-12-13
JP2009163961A2009-07-23
JPS4921508B11974-06-01
JP2012212543A2012-11-01
JPH05325699A1993-12-10