Title:
ELECTROMAGNETIC CONTACTOR
Document Type and Number:
WIPO Patent Application WO/2012/157171
Kind Code:
A1
Abstract:
Provided is an electromagnetic contactor capable of improving the suction force of a movable plunger by preventing the magnetic flux passing through the movable plunger from dropping when the movable plunger moves. An electromagnetic contractor provided with a movable contact (130) disposed so as to be able to come into contact with and separate from a pair of secured contacts (111, 112), and an electromagnet unit (200) for driving the movable contact. The electromagnet unit (200) is provided with: a magnetic yoke (201) having a cross-section that is in the shape of a U; an upper magnetic yoke (210) disposed so as to bridge the upper opening of the magnetic yoke (201); a spool (204) around which an exciting coil (208) disposed on the bottom plate of the magnetic yoke (201) is wound and which has a center opening; a movable plunger (215) disposed within the center opening of the spool (204) in a movable manner in the axial direction and connected to the movable contact (130); and an auxiliary yoke (203) for forming a magnetic path between the movable plunger (215) and the U-shaped magnetic yoke (201) while the movable plunger is in a release position.
Inventors:
NAKA YASUHIRO (JP)
TAKAYA KOUETSU (JP)
SUZUKI KENJI (JP)
TACHIKAWA HIROYUKI (JP)
TAKAYA KOUETSU (JP)
SUZUKI KENJI (JP)
TACHIKAWA HIROYUKI (JP)
Application Number:
PCT/JP2012/002328
Publication Date:
November 22, 2012
Filing Date:
April 03, 2012
Export Citation:
Assignee:
FUJI ELEC FA COMPONENTS & SYS (JP)
FUJI ELECTRIC CO LTD (JP)
NAKA YASUHIRO (JP)
TAKAYA KOUETSU (JP)
SUZUKI KENJI (JP)
TACHIKAWA HIROYUKI (JP)
FUJI ELECTRIC CO LTD (JP)
NAKA YASUHIRO (JP)
TAKAYA KOUETSU (JP)
SUZUKI KENJI (JP)
TACHIKAWA HIROYUKI (JP)
International Classes:
H01H50/36; H01H51/22
Foreign References:
JPS6482607A | 1989-03-28 | |||
JP3107288B2 | 2000-11-06 | |||
JPH01268005A | 1989-10-25 | |||
JPH10125196A | 1998-05-15 | |||
JP3107288B2 | 2000-11-06 |
Other References:
See also references of EP 2711961A4
Attorney, Agent or Firm:
HIROSE, Hajime et al. (JP)
Hirose 1 (JP)
Hirose 1 (JP)
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Claims: