| 摘要 |
PURPOSE: To reduce the trouble in a molding process and improve the yield of a product without impairing strength by forming the one of a case member and a cover member for forming a sealed vessel out of a metal material and the other of a heat resistant resin. CONSTITUTION: Either one of a case member 2 and a cover member 3 for constituting a sealed vessel is formed out of the metal material like a cast material of aluminum or magnesium or a sheet metal material of SUS, Cu, Al, or plated Fe and the other is formed out of a heat resistant resin material, preferably fiber reinforced with glass material, metal or carbon or a resin material mixed with a metal powder grain, for example PPS, PA, PE, etc. By above constitution, the trouble of a molding process is reduced to the utmost without impairing strength as the sealed box and also the yield of a product can be improved and also the wear and damage at a bearing part can be reduced by lightening the driven side furthermore. |
