Title:
POLAR ELECTROMAGNET AND ELECTROMAGNETIC CONTACT
Document Type and Number:
WIPO Patent Application WO/2011/125142
Kind Code:
A1
Abstract:
A movable iron core part (27) comprises a first movable opposing plate (29) and a second movable opposing plate (30) affixed respectively to the two ends of a movable iron core rod (28) inserted through an insertion hole (31) in an electromagnetic coil (32). In a fixed iron core part (24), a first fixed opposing plate (36) opposes the first movable opposing plate at a separation therefrom, a second fixed opposing plate (37) opposes the second movable opposing plate at a separation therefrom, and the first and second fixed opposing plates are coupled by a fixed side plate (35) that extends around the outside of the electromagnetic coil. When the electromagnetic coil is energized, creating an electromagnetic attractive force in the gap between the first fixed opposing plate and the first movable opposing plate, said force opposes a spring force from a return spring (15) and an attractive force from a permanent magnet (26), and the first movable opposing plate moves towards the first fixed opposing plate. An armature section (37) of the first fixed opposing plate and an armature section (39) of the first movable opposing plate extend diagonally with respect to the movement direction of the movable iron core part and are parallel to each other.
Inventors:
WATANABE, Masaaki (5-7, Nihonbashi Odemma-cho, Chuo-k, Tokyo 11, 〒1030011, JP)
渡邊 勝昭 (〒11 東京都中央区日本橋大伝馬町５番７号 富士電機機器制御株式会社内 Tokyo, 〒1030011, JP)
渡邊 勝昭 (〒11 東京都中央区日本橋大伝馬町５番７号 富士電機機器制御株式会社内 Tokyo, 〒1030011, JP)
Application Number:
JP2010/007382
Publication Date:
October 13, 2011
Filing Date:
December 20, 2010
Export Citation:
Assignee:
FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO.,LTD. (5-7 Nihonbashi Odemma-cho, Chuo-ku Tokyo, 11, 〒1030011, JP)
富士電機機器制御株式会社 (〒11 東京都中央区日本橋大伝馬町５番７号 Tokyo, 〒1030011, JP)
WATANABE, Masaaki (5-7, Nihonbashi Odemma-cho, Chuo-k, Tokyo 11, 〒1030011, JP)
富士電機機器制御株式会社 (〒11 東京都中央区日本橋大伝馬町５番７号 Tokyo, 〒1030011, JP)
WATANABE, Masaaki (5-7, Nihonbashi Odemma-cho, Chuo-k, Tokyo 11, 〒1030011, JP)
International Classes:
H01F7/16; H01H50/16
Attorney, Agent or Firm:
HIROSE, Hajime et al. (Tokkyo Gyomu Hojin Nichiei Kokusai Tokkyo Jimusho, Yusen Iwamotocho Bldg. 8th Floor 3-3, Iwamoto-cho 2-chome, Chiyoda-k, Tokyo 32, 〒1010032, JP)
Claims: