| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a composite insulator formed with a core rod made of porcelain and a sheath made of a high polymer material by engaging them by contact friction. <P>SOLUTION: Disclosed is a composite insulator, comprising: a core rod 2 formed of porcelain and having a friction part on its outer peripheral surface; and a sheath 3 formed of a high polymer material, coating the outer peripheral surface of the core rod 2 in a state of engagement by contact friction with the friction part, and having a plurality of shade parts 7; the friction part being made of a convex and/or concave shaped structure 8, and the structure 8 being formed integrally with the core rod 2. The structure 8 is continuously formed in a line shape or in a dotted line shape along a circumferential direction and/or longer direction of the core rod 2. Also, the structure 8 is composed of a first structure formed by being wound in spiral around the outer peripheral surface of the core rod 2 in one direction, and a second structure formed by being wound in spiral in a direction opposite to the one direction. The core rod 2 has a plurality of minute porcelain pieces 9 on a part of or on a whole region of its outer peripheral surface, and the minute pieces 9 being formed integrally with the core rod 2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
