| 摘要 |
<p>PURPOSE:To prevent the lowering of sensitivity of the polarized electromagnet device by arranging each two-armature-surface of upper and lower yokes coupled by a permanent magnet at the insides and outsides of the four-armature-surfaces at both sides of an armature, which has a coil and reciprocates and moves horizontally. CONSTITUTION:The both inside and outside side surfaces of both side pieces 4 of the ?- shaped armature 2, an intermediate piece 3 thereof has the coil 1, both ends thereof have the both side pieces 4 and which reciprocates and moves horizontally, are made the four-armature-surfaces 4a, 4b, and the-two-armature surfaces 5b of the outer side surfaces of the upper yoke 5 are disposed so as to separate from or contact with the inside armature surfaces 4b, 4b of the armature 2. The two-armature-surfaces 8a of the inside side surfaces of both side pieces 8 of the lower yoke 6 are arranged so as to separate from or contact with the outside armature surfaces 4a, 4a of the armature 2. The permanent magnet 9 is disposed between the upper and lower yokes 5, 6 to magnetically couple the both 5, 6. Accordingly, since the magnetomotive flux of the coil 1 does not pass through the permanent magnet 9, the sucking force of the coil 1 horizontally reciprocating and moving the armature 2 is not damped, and the lowering of sensitivity is prevented.</p> |
