| 摘要 |
PURPOSE:To improve workabilities of assembling and promote heat-release effects by forcing a core block having a required member of cores made of magnetic material, a solenoid being inserted into each of the cores, into an opening of a radiating member made of material having high thermal conductivity, wherein the diameter of said opening is slightly smaller than that of the circumference of the core block, so that the core block is fixed to the radiating member. CONSTITUTION:A plurality of cores 104 serving as magnetic pole are formed on a core block 101 made of ferromagnetic substances such as pure iron, silicon steel, etc., in such a manner that said cores protrude at regular intervals and are disposed in a radial manner, wherein a solenoid 110 is inserted into each of the cores 104. The surface area of a radiating member 106 made of material having high thermal conductivity and moldability such as aluminum, copper, etc., is made as large as possible so that the outer peripheries thereof are formed into fin-like configurations 107 to promote heat-release effects. And a base plate 113 is secured to the lower part of the member 106, while an opening 116 having a diameter slightly smaller than that of outer circumference of the block 101 is provided at the central part of said member, whereby the block 101 is pressed into said opening 116 and secured thereto. As a result, heat is radiated effectively to the atmosphere and machining cost can be reduced. |
