JPH022187U

JPH022187U -

Info

Publication number: JPH022187U
Application number: JP7948188U
Authority: JP
Priority date: 1988-06-17
Filing date: 1988-06-17
Publication date: 1990-01-09

Description

[Brief explanation of drawings]

第１図は本考案の実施例であるリフイールの縦
断面図、第２図は同種のリフイールをノツク式筆
記具に搭載し、ノツクして軸先より筆記先端部を
突出させた状態を示した要部透視断面図、又、第
３図は上記リフイールを軸内に収納し、軸先にシ
ールキヤツプを嵌着してチツプと通気孔を密嵌し
た状態を示した要部透視断面図である。１，１ａ……リフイール、２，２ａ……チユー
ブ、３……横孔、４……通気溝、５，５ａ……通
気孔、６，６ａ……筒体、７……チツプ、８……
インク誘導芯、９……インク吸蔵体、１０……尾
栓、１１，１１ａ……先端部、１２……軸、１３
……リターンスプリング、１４……シールキヤツ
プ、１５……ノツク式筆記具。 Fig. 1 is a vertical cross-sectional view of a refill that is an embodiment of the present invention, and Fig. 2 is a schematic diagram showing the refill of the same type mounted on a knock-type writing instrument, with the writing tip protruding from the tip of the shaft after being knocked down. FIG. 3 is a perspective sectional view of the main part showing a state in which the refill is housed in the shaft, a seal cap is fitted to the tip of the shaft, and the tip and the ventilation hole are tightly fitted. 1, 1a... Refill, 2, 2a... Tube, 3... Horizontal hole, 4... Ventilation groove, 5, 5a... Ventilation hole, 6, 6a... Cylindrical body, 7... Chip, 8...
Ink guide core, 9... Ink storage body, 10... Tail plug, 11, 11a... Tip, 12... Shaft, 13
... Return spring, 14 ... Seal cap, 15 ... Knot type writing instrument.

Claims

[Scope of utility model registration request]

A ball portion is held at the tip of a tube 2 made of a resin molded product with excellent properties for suppressing ink evaporation, and a tip 7 is fixed thereto, and an ink storage body 9 filled with ink is inserted from the rear end of the tube 2. In the refill 1 of a knob-type writing instrument such as a water-based ballpoint pen, the tube 2 is connected to the ink storage body 9 and has an ink guiding core 8 provided from approximately directly below the ball portion. A horizontal hole 3 is formed on the side of the ink storage body 9 at an appropriate rear side from the front end surface.
At the same time, a ventilation groove 4 is formed in the side surface of the tube 2 in order to tightly fit a thin metal cylinder 6 in the front part of the tube 2 to form a narrow and long air flow passage between them. 3 to the tip of the tube 2, furthermore, the inner diameter of the tip 11 of the cylindrical body 6 is slightly larger than the outer circumference of the tip 7,
A refill for a knob-type writing instrument such as a water-based ballpoint pen, characterized in that a ventilation hole 5 is provided on the end face of the tip part 11 in communication with the ventilation groove 4.