| 摘要 |
PURPOSE:To obtain an electromagnetic controller, which has a compact outer diameter, magnetism thereof hardly leaks, power consumption thereof can be economized and which can conduct control operation proportional to the quantity of conduction to a coil, by transmitting the movement, of a plunger displaced in response to the balance of magnetic attracting force and the force of spring section of a spring over a material to be controlled. CONSTITUTION:When a coil 4 is conducted, magnetic attracting force corresponding to the quantity of conduction is generated in an air gap formed between the cylinder end surface of a magnetic cylindrical body1 as a core material for a magnetic positioned on the outer circumferential side of the coil 4 and the cylinder and section of a movable magnetic cylindrical body 12 incorporated to a plunger 7 freely-fitted into the inner hollow section of an electromagnet in a coaxial manner, and the plunger 7 is attracted into the inner hollow section of the electromagnet only by a distance section corresponding to the quantity of conduction against the force of pushing action of a spring 6. The object of control is effected by transmitting the movement of the plunger 6 over an operating mechanism for controlling a material to be controlled. Since the magnetic cylindrical body 1 is positioned onto the outermost circumferential section of a device, the surface area of the air gap is widened, thus increasing magnetic attracting force on the basis of the augmentation of a flux passage sectional area in the air gap. |
