| 摘要 |
PURPOSE: To form an electric motor rotary shaft excellent in heat insulation and to improve the productivity, by using a resin of low heat conductivity in a constitutional member of an opposite load side part material, and securing a fitting connection part between a drive part material and the opposite load side part material by a bonding agent or the like. CONSTITUTION: In a connection part in an opposite load side end face of a metal-made drive part material 1a, a recessed part 1g is provided where an opposite load side part material 1b molded by a resin of low heat conductivity is pressed or fixed by bonding. An air bleeder hole 1c for extruding air in the recessed part 1g of the drive part material 1a, when the opposite load side part material 1b is pressed in the part 1g, is opened through the recessed part 1g from a peripheral surface of the drive part material 1a. In this way, an electric motor rotary shaft of high heat insulation can be formed by improving the productivity. |
