JPS647578U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図及び第２図は第１実施例に係り、第１図
は小管式筆記具の縦断面図、第２図は中芯の拡大
横断面図である。又、第３図は本考案第２実施例
のサインペンの縦断面図である。 １……インク、２……インクタンク、３……先
軸、４……空気孔、５……コレクター、６……先
端孔、７……パイプ、８……内孔、９……中心孔
、１０……中駒、１１……段部、１２……段部、
１３……コイルばね、１４……溝、１５……中芯
、１６……尾栓、１７……軸筒、１８……インク
吸蔵体、１９……ホルダー、２０……中心孔、２
１……カシメ部。 FIGS. 1 and 2 relate to the first embodiment, with FIG. 1 being a longitudinal cross-sectional view of the small tube type writing instrument, and FIG. 2 being an enlarged cross-sectional view of the core. Further, FIG. 3 is a longitudinal sectional view of a felt-tip pen according to a second embodiment of the present invention. 1... Ink, 2... Ink tank, 3... Tip shaft, 4... Air hole, 5... Collector, 6... Tip hole, 7... Pipe, 8... Inner hole, 9... Center hole. , 10... middle piece, 11... tiered section, 12... tiered section,
13...Coil spring, 14...Groove, 15...Center core, 16...Tail plug, 17...Shaft cylinder, 18...Ink storage body, 19...Holder, 20...Center hole, 2
1...Crimping part.

Claims (1)

【実用新案登録請求の範囲】 １ 小径パイプ内に中芯を挿通した構造の筆記部
を構成し、その中芯を超硬合金製とし且つその外
面に軸方向の溝が形成される異形断面としたこと
を特徴とする筆記具。 ２ パイプを中芯と同一材料製としパイプ又は中
芯と接触する他の部材を非金属製又は中芯と同一
材料製とした実用新案登録請求の範囲第１項記載
の筆記具。[Scope of Claim for Utility Model Registration] 1. A writing part having a structure in which a core is inserted into a small diameter pipe, the core is made of cemented carbide, and an irregular cross section in which an axial groove is formed on the outer surface. A writing instrument characterized by 2. The writing instrument according to claim 1 of the utility model registration claim, in which the pipe is made of the same material as the core, and the pipe or other members in contact with the core are made of non-metal or the same material as the core.