| 摘要 |
PCT No. PCT/JP82/00147 Sec. 371 Date Dec. 29, 1982 Sec. 102(e) Date Dec. 29, 1982 PCT Filed Apr. 30, 1982 PCT Pub. No. WO82/03944 PCT Pub. Date Nov. 11, 1982.A polarized electromagnetic relay of this invention comprises a yoke providing air gaps at four diagonal positions and an H-shaped armature block having four pole contacting portions positioned in the air gaps of the yoke. This yoke comprises two yoke units, each of which is formed with a substantially U-shaped first magnetic member and a permanent magnet installed at one of its poles to the middle on the lower side of the first magnetic member, and a second magnetic member contacted with the other pole of the permanent magnet and providing air gaps between its both ends and the free ends of the first magnetic member. The polarized electromagnetic relay according to this invention is high in the operating speed and sensitivity and low in the impact generation, for reasons that the armature block forming a moving part is light in weight because it contains no permanent magnet therein, the magnetic efficiency is high since no permanent magnet is interposed in the path of the magnetic flux of electromagnet coil, and so on.
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