| 摘要 |
PURPOSE:To eliminate the defective contact of a ring with a ring-shaped contact by a method wherein both opposite protrusion parts on a ring are extended respectively in parallel in the axial-line direction, the ring is moved loose by its own weight when a connecting pin is laid horizontally in order to insert the ring and a line or a face which connects both protrusion parts is tilted by its own weight. CONSTITUTION:Two protrusion parts 3 (3a, 3b) for continuity use are projected and molded in diametrically opposite positions of a cylindrical member constituting a ring 1. A cutout part 5 does not exist in the intermediate position of an arc connecting both protrusion parts 3a, 3 b; it is formed in an angular position which is close to the protrusion part (e.g. 3a) on one side. As an angler, a value of, e.g. about 45 deg. is considered. When a connecting pin is fitted and mounted, the protrusion parts 3 on the ring 1 are necessarily situated in angular positions which are displaced from counterbored positions situated side by side in the horizontal direction. Consequently, the protrusion parts 3 on the ring 1 are not fitted in the counterbored positions. Thereby, the defective continuity and the defective connection of an electric circuit are not caused. |
