キャップ

Cap

Abstract

PROBLEM TO BE SOLVED: To provide a cap in which enough venting paths can be ensured even when an inner cylinder and an outer cylinder are connected by a connecting part. SOLUTION: A cap 16 has an opened front end 20a and an opened back end 20b and has the outer cylinder 20 for removably inserting the front end 20a opening to a shaft cylinder 10 and the inner cylinder 22 whose opening of the front end 22a is brought into close contact with the surrounding of a writing part 12 of the shaft cylinder 10 and whose back end 22b is closed and rib-like connecting parts 26 extending in the longer direction for connecting the inner face part 20c of the outer cylinder and the outer face part 22c of the inner cylinder while venting paths 24 are ensured are formed and the widths of these connecting parts 26 are not definite widths in the longer direction but become narrower as they approach the front end 20a of the outer cylinder 20 so as to be formed into approximately a tear drop shape or a tapered wedge- like shape.
(57)【要約】 【課題】 内筒と外筒を連結部で連結しても十分な通気 路を確保できるキャップを提供する。 【解決手段】 キャップ16は、前端20aと後端20 bが開口しており軸筒体10に前端20a開口を着脱可 能に嵌着する外筒20と、前端22aの開口が軸筒体1 0の筆記部12周囲と密着してシールしかつ後端22b が塞がれている内筒22とを有してなり、外筒内面部2 0cと内筒外面部22cとを通気路24を確保して連結 する長手方向に延びるリブ状の連結部26を形成し、こ の連結部26の幅が長手方向で一定幅ではなく外筒20 の前端20a方向に行くにつれて狭くなるほぼ涙滴形状 あるいはテーパー状のほぼ楔形状に形成したものであ る。

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    Publication numberPublication dateAssigneeTitle
    JP-2009300933-ADecember 24, 2009Canon Inc, キヤノン株式会社撮像装置