| 摘要 |
PROBLEM TO BE SOLVED: To prevent a clip from moving relative to a barrel cylinder and falling off from the barrel cylinder by a method wherein in a groove part which is formed at an area of the barrel cylinder where the clip is attached, the pinching parts of the clip is attached in a manner to surround the barrel cylinder, and the end part on the pinching part side of the main body part of the plate-form clip is bent, and the end part is formed to extend to the groove part. SOLUTION: A groove part 3 which is formed on an outer peripheral part of a barrel cylinder, where a clip 2 is attached, is constituted of groove parts at two locations in the side surface direction. In the meantime, the clip 2 is constituted of a flat plate-form clip main body, base parts 8, 9 which are formed by bending in a rectangular direction from the upper part of the clip main body to the inside, pinching parts 10, 11 which are continuously curve-formed from the base parts 8, 9, and are fitted in the groove part 3 of the barrel cylinder in a manner to surround the barrel cylinder, and a bent part for which the upper part of the clip main body is bent in the direction of the barrel cylinder 1. By this method, a retracting motion of the clip 2 is stopped by a flange part which is formed by the groove part 3, and also, when the clip 2 is twisted in the lateral direction, one part of the top face of the end part of the bent part comes into contact with the flange part, and the retracting motion of the clip 2 is stopped. |
