JPH0240583U

JPH0240583U -

Info

Publication number: JPH0240583U
Application number: JP11808188U
Authority: JP
Priority date: 1988-09-08
Filing date: 1988-09-08
Publication date: 1990-03-20

Description

[Brief explanation of drawings]

第１図は、本考案細管式筆記具の要部縦断面図
、第２図は、第１図のＡ―Ａ線断面図、第３図は
、本考案筆記具の一部切欠き分解斜視図、第４図
は従来の細管式筆記具の要部横断面図である。１……細管式筆記具、２……ペン芯、２１……
インキ流量調節部、２１１……環状櫛溝、２１２
……スリツト状インキ溝、２１３……空気交替凹
溝、２１４……中心孔、２２……規制部、２２１
……バネ座、２２２……インキ通孔、２３……ホ
ルダー嵌合部、３……錘、３１……クリーニング
針、３２……バネ座、４……インキ通路、４１…
…細幅の部分、４２……広幅の部分、５……軸筒
、５１……インキ貯蔵部、５２……栓体、５３…
…尾栓、６……筆記先端部、６１……チツプホル
ダー、６２……細管、７……前方部材、８……バ
ネ体。 FIG. 1 is a vertical cross-sectional view of essential parts of the thin tube type writing instrument of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a partially cutaway exploded perspective view of the writing instrument of the present invention. FIG. 4 is a cross-sectional view of a main part of a conventional thin tube type writing instrument. 1... Thin tube type writing instrument, 2... Pen core, 21...
Ink flow rate adjustment section, 211... annular comb groove, 212
... Slit-shaped ink groove, 213 ... Air exchange groove, 214 ... Center hole, 22 ... Regulation part, 221
... Spring seat, 222 ... Ink passage hole, 23 ... Holder fitting part, 3 ... Weight, 31 ... Cleaning needle, 32 ... Spring seat, 4 ... Ink passage, 41 ...
...Narrow portion, 42...Wide portion, 5...Shaft cylinder, 51...Ink storage section, 52...Plug body, 53...
... tail plug, 6 ... writing tip, 61 ... tip holder, 62 ... thin tube, 7 ... front member, 8 ... spring body.

Claims

[Scope of utility model registration request]

A writing tip 6 and a shaft tube 5 equipped with a thin tube 62 at the tip
An ink flow rate adjustment part 21 is provided on the peripheral surface between the ink storage part 51 at the rear part, a pen core 2 with a central hole 214 passing through it is arranged in the shaft center part, and a cleaning needle 31 is installed in the thin tube 62. A weight 3 fixed to the rear part of the needle is inserted into the center hole 214 so as to be slidable in the axial direction, and the outer peripheral surface of the weight 3 and the center hole 214 are inserted into the center hole 214 .
It is a capillary type writing instrument of the type in which ink is led out to the writing tip using the capillary gap formed between the wall surface and the ink passage 4, and the cross section of the pen core at the center hole 214 where the weight is housed. In this case, one half of the inner wall of the center hole 214 or the circumferential surface of the weight 3 is configured asymmetrically with respect to the other half, and the ink passage 4 is provided with a relatively wide portion and a narrow portion unevenly distributed. A thin tube type writing instrument 1.