| 摘要 |
PROBLEM TO BE SOLVED: To easily and surely prevent the error of suction for a rubber plug, by forming a groove for releasing the air which reaches the periphery from the center of an elevation pin, at the rubber plug placing face of the pin. SOLUTION: A crossed air vent groove 13, which reach reaches the peripheral face of an elevation pin 10, is made a placing face 11 of the pin 10. The crossed air vent groove 13 is arranged to make a crossing at the center of the pin 10, and it is arranged so that the cable passage hole 51 of a rubber plug 50 may conform to the crossing 13a of the crossed air vent groove 13 when the rubber plug 50 is placed accurately on the placing face 13. That is, by having made the air vent groove 13 cross-shaped, even if the rubber plug 50 is dislocated on a placing face 11d within the range of H, the crossed air vent groove 13 and the cable passage hole 51 of the rubber plug 50 conform to each other, and the air release can be performed without fail. Accordingly, the error in suction for the rubber plug 50 can be prevented easily and surely. |
