| 摘要 |
PCT No. PCT/JP82/00124 Sec. 371 Date Dec. 15, 1982 Sec. 102(e) Date Dec. 15, 1982 PCT Filed Apr. 16, 1982.An electromagnet including a housing for a load rotary body, an annular movable electromagnet section formed of magnetic material, of U-shaped radial cross section, defining an annular groove, rotatively supported by the housing through bearings, and a fixed electromagnetic section disposed in the annular groove, including a winding coil box body which includes an outer sleeve opposing an outer cylindrical wall of the movable section and an inner sleeve opposing an inner cylindrical wall of the movable body. A magnetic yoke joins the inner and outer sleeves at the open end of the movable section and opposes the inner and outer cylindrical walls of the movable section. A winding coil is bounded by the inner and outer sleeves and the yoke, and the yoke, with the movable electromagnetic section, defining a magnetic path about the winding coil. A flange connects the side of the yoke opposite the coil to the housing so as to support the fixed electromagnetic section on the housing. A lead wire connection for the coil extends circumferentially in a circumferentially extending storage space within the yoke, the yoke also including at least one opening for electrical connection therethrough to the lead wire connection.
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