| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problems: in a prime body including semi-fixed skeleton portions and joint portions by joining the skeleton and joint portions of the whole body by use of a metal convertible into magnetic iron, forming a skin portion of the prime body of a soft resin from above them, converting the skeleton and joint portions into magnetic iron, thereafter filling a liquid between the skeleton and joint portions, and the skin portion, applying defoam processing, and sealing the whole body, when the skeleton portions and the joint portions are formed of only the metal convertible into magnetic iron, it is difficult to carry or drive the primary body because the skeleton portions and the joint portions become heavy when the primary body becomes large. <P>SOLUTION: In forming the skeleton portion and the joint portion to be used in the primary body in forming the primary body, a plastic resin material such as a carbon resin or an acrylic resin is mixed with metal powder and metal pieces convertible into magnetic iron to form the skeleton portion and the joint portion in place of the metal convertible into magnetic iron. Thereby, the more lightweight skeleton portion and the more lightweight joint portion can be formed while maintaining strength equal to the skeleton portion and the joint portion formed of only the metal convertible magnetic iron. <P>COPYRIGHT: (C)2013,JPO&INPIT |
