| 摘要 |
PURPOSE:To establish a miniaturization of an electromagnet with an attractive force of a magnetic pole weakened by a method wherein a pressing member for pressing a control member to other magnetic pole is formed in the control member in a condition that the control member is attracted and held by a pair of magnetic poles. CONSTITUTION:An electromagnet device includes an electromagnet 1 having two pairs of magnetic poles 4, 5 by winding two sets of coils 2, 3, a control member 6 attracted and held in opposition to the repelling force by a pair of magnetic poles of the electromagnet, and a restricting member 7 attached movably to the control member 6 and attracted and held by the magnetic pole 5. In this case, an elastic pressing member 8 is provided on the member 6. When the member 6 is set at a position to be attracted and held to the magnetic pole 4, the member 8 urges the member 7 to be pressed to a position to be attracted and held by the magnetic pole 5 and the member 8 serves to release the member 7 from the pressing condition in accordance with departing of the member 6. Thereby, the attractive force of the magnetic pole 5 can be weakened and therefore a miniaturization of the electromagnet 1 be established. |
