| 摘要 |
<p>PURPOSE:To obtain a self-holding type solenoid powerful and low power consumptive, by a method wherein permanent magnets are fixed to both sides of an axis of a movable iron core symmetrically facing with each other, movably yokes are disposed on the outsides of the magnets facing a fixed yoke, and a fixed iron core and a movable iron core are disposed also facing with each other. CONSTITUTION:A fixed iron core 41 is caulked inside of a U-shaped fixed yoke 40, an electromagnetic coil 42 is fitted therein, a non-magnetic mounting plate 43 is caulked to the fixed yoke 40, a square bar 45 is movably inserted to a square hole provided in the center of the electromagnetic coil 42, flat permanent magnets 47 are adhered to both sides of a head 46, a movable yokes 48 are adhered outside thereof. A movable iron core 44 is provided with a deep hole in the center thereof, to which a spring 49 is fitted, and is provided with a valve body 51 having a valve rubber 50 on the end surface of the head 46. 52 is a valve seat. The movable iron core 44 is adsorbed by magnetic force, when the electromagnetic coi 42 is excited instantaneously or the valve body is opened. The movalbe iron core 44 is released and the valve seat 52 is closed, when the magnetic coil 42 is instantaneously applied with the inverse exciting current, as it weakens the magnetic field, decreasing adsorbability.</p> |
