| 摘要 |
<p>PURPOSE:To prevent water from infiltrating from the outside into a position where an exciting coil is provided, by leading both ends of the start and the end of winding of the exciting coil into a terminal block through the cylindrical opening of a bobbin comprizing two members. CONSTITUTION:In the electromagnet 28 of an electromagnetic clutch, a coil bobbin 29 is positioned in a ring yoke 14. The coil bobbin 29 is so constructed that an inner and outer coil bobbins 30 and 31 may be connected to each other, its complete unit is formed in hollow ring shape, an exciting coil 15 is provided in the hollow, and the cylindrical opening 31c of the coil bobbin 29 is inserted into a through hole 14e at the bottom of the ring groove of the yoke 14 through a rubber bush 35. Next, the start 15a and the 15b of winding of the exciting coil 15 are led into a terminal block 27 through the opening 31c, connected, and a cover body 37 is closely fitted by pressing through a packing 36. Thus, since any water is not infiltrated from the outside into a position where the exciting coil if provided, troubles such as poor insulation, etc. can be prevented.</p> |
