Title:
ELECTROMAGNETIC RELAY
Document Type and Number:
Japanese Patent JP2016143623
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an electromagnetic relay capable of keeping a contact device under an open state when abnormal current such as overcurrent and short-circuit current flows in the contact device.SOLUTION: A trip device 4 moves a movable element 32 to a third position by a magnetic flux which occurs in a second exciting coil 41 due to abnormal current of a specified value or more flowing through a contact device 2 under a state that the movable element 32 is located at a first position. A retainer 7 has a holding magnet 71 formed of a permanent magnet. The retainer 7 is configured to hold the movable element 32 at the third position by the magnetic flux occurring in the holding magnet 71 when the trip device 4 moves the movable element 32 to the third position. Here, the holding magnet 71 is disposed at the opposite side to a stator 33 with respect to the movable element 32 in one direction along which the stator 33 and the movable element 32 are aligned with each other.SELECTED DRAWING: Figure 1
Inventors:
KOBAYASHI SHOICHI
KIMOTO SHINYA
SHIMIZU YOSUKE
KIMOTO SHINYA
SHIMIZU YOSUKE
Application Number:
JP2015020765A
Publication Date:
August 08, 2016
Filing Date:
February 04, 2015
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
H01H50/04; H01H71/32; H01H73/36
Attorney, Agent or Firm:
Keisei Nishikawa
Takeshi Sakaguchi
Hidetoshi Kitade
Nakaishi Haruki
Takeshi Sakaguchi
Hidetoshi Kitade
Nakaishi Haruki
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