| 摘要 |
PURPOSE:To eliminate the inspection during a long period and to improve the reliability of insulating lead wirings by forming a wear resistant interposing layer having small frictional coeficient on the outer periphery of a connecting conductor, and forming an elastic layer having a cushioning effect. CONSTITUTION:A connecting conductor 9 is connected between a phase connecting ring 4 and a copper tube joint 8, filler 11 of compound is filled in a recess of the joint 8 and the conductor 9 to insulate without gap. An aromatic polyamide sheet which has small frictional coeffcient and good wear resistance is lap wound on the insulating layer 13 of a connecting ring 14 from the filler 11 to form an interposing layer 16. Then, the joint 8 is enclosed with a mica tape form the insulating layer 14 to secure the layer 16. Further, an elastic layer 17 made of felt or rubber having cushion effect is wound around the layer 16 oppositely to the layer 14, is further lapped thereon to form an insulating layer 15 of a connecting conductor with epoxy varnish glass cloth material. |
