Invention Grant
- Patent Title: Electromagnetic relay
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Application No.: US15111176Application Date: 2015-02-04
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Publication No.: US09734972B2Publication Date: 2017-08-15
- Inventor: Yoshihisa Fukuda , Kazuhiro Kodama , Junji Takahashi , Hisashi Hiraki , Shuichi Katayama , Tomohiro Ota
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2014-025096 20140213
- International Application: PCT/JP2015/000483 WO 20150204
- International Announcement: WO2015/122151 WO 20150820
- Main IPC: H01H51/01
- IPC: H01H51/01 ; H01H50/20 ; H01H51/22 ; H01H50/36 ; H01H50/42

Abstract:
An electromagnetic relay includes a contactor including a fixed contact and a movable contact, and an electromagnet device for moving the movable contact. The electromagnet device includes a coil generating a first magnetic flux by energization, a tubular body including a permanent magnet generating a second magnetic flux in a direction identical to a direction of the first magnetic flux and having a hollow extending in a center axis direction, a movable element disposed in the hollow of the tubular body and reciprocating in the center axis direction, and a yoke forming a magnetic circuit passing together with the movable element and the tubular body. The magnetic circuit allows at least one of the first and second magnetic fluxes to pass through the magnetic circuit. The electromagnet device is configured to, when the coil is energized, move the movable contact to a first position by attracting the movable element with the first magnetic flux and the second magnetic flux. The electromagnet device is configured to, when energization of the coil is suspended, move the movable contact to a second position different from the first position. This electromagnetic relay is easily designed and reduces power consumption at a low cost.
Public/Granted literature
- US20160336133A1 ELECTROMAGNETIC RELAY Public/Granted day:2016-11-17
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