| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate the need for applying an undue force to an abutting cover by placing the forward edge of a dish-like enlarged part, formed at the forward end of tubular part of insulator coupling port, in the circumferential space between inner and outer creases of a tension insulator. SOLUTION: A semi-tubular part for insulator coupling tube forms a tubular part G of insulator coupling port when side face cover bodies 20, 20 are closed through a hinge. The tubular part G of insulator coupling port covers the coupling pin 61 of a tension insulator 6 pivoted to a clamp 5. A half dish enlarged part formed at the forward of semi-tubular part for insulator coupling tube forms each dish-like diametral part S when the side face cover bodies 20, 20 are closed through a hinge. The tension insulator 6 has inner and outer tubular pleats 62, 63 defining a circumferential space 631 between them. Forward edge of the enlarged dish-like part S at the tubular part G of insulator coupling port is located on the open face of circumferential space 631.</p> |
