JPS63124183U

JPS63124183U -

Info

Publication number: JPS63124183U
Application number: JP1591987U
Authority: JP
Priority date: 1987-02-05
Filing date: 1987-02-05
Publication date: 1988-08-12

Description

[Brief explanation of drawings]

図は本考案実施例の水性ボールペンを示すもの
で、第１図は完全な状態の縦断面図、第２図は尾
栓を取り外した状態の縦断面図である。１……軸筒、１ａ……小径部、１ｂ……大径部
、１ｃ……案内筒部、１ｄ……リブ、１ｅ……大
内径部、１ｆ……中内径部、１ｇ……小内径部、
２……縦溝Ａ、３……縦溝Ｂ、４……切欠部、５
……チツプ、５ａ……外径縮小部、６……ボール
、７……インク吸蔵体、８……誘導芯、９……尾
栓、９ａ……鍔部、９ｂ……圧入部、９ｃ……大
外径部、９ｄ……中外径部、９ｅ……小外径部、
９ｆ……最小外径部、１０……内孔、１１……横
孔、１２……切欠溝、１３……周方向の隙間Ａ、
１４……周方向の隙間Ｂ。 The drawings show a water-based ballpoint pen according to an embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional view of the pen in its complete state, and FIG. 2 is a vertical cross-sectional view of the pen with the tail plug removed. 1...Shaft tube, 1a...Small diameter part, 1b...Large diameter part, 1c...Guiding cylinder part, 1d...Rib, 1e...Large inner diameter part, 1f...Medium inner diameter part, 1g...Small inner diameter Department,
2... Vertical groove A, 3... Vertical groove B, 4... Notch, 5
. . . Chip, 5a . ...Large outer diameter part, 9d...Medium outer diameter part, 9e...Small outer diameter part,
9f...Minimum outer diameter part, 10...Inner hole, 11...Horizontal hole, 12...Notch groove, 13...Circumferential gap A,
14...Circumferential gap B.

Claims

[Scope of utility model registration request]

A large inner diameter section, a medium inner diameter section, and a small inner diameter section are provided in order from the open end toward the front on the inner surface of the rear end of the shaft cylinder, and the large inner diameter section is provided with an axial longitudinal groove A that communicates with the open end. The middle inner diameter part is provided with a vertical groove B that communicates with the large inner diameter part at a position substantially opposite to the longitudinal groove A, and a press-fitting part of the tail plug having an inner hole with an open front end is provided with a longitudinal groove B extending forward from the rear end. A large outer diameter section, a medium outer diameter section, and a small outer diameter section are provided in this order, and a horizontal hole is provided that communicates the inner hole with the outer surface of the small outer diameter section. Press fit into the inner diameter part, and press fit into the middle inner diameter part while positioning a part of the rear end of the middle outer diameter part in the large inner diameter part,
Furthermore, the small outer diameter part is press-fitted into the small inner diameter part with a part of the rear end located in the middle inner diameter part to create a circumferential gap between the middle outer diameter part of the tail plug and the large inner diameter part of the shaft cylinder. A, and a circumferential gap B is formed between the small outer diameter part of the tail plug and the middle inner diameter part of the shaft cylinder, and the inner hole, the horizontal hole, the circumferential gap B, and the vertical gap are A refill for a writing instrument such as a water-based ballpoint pen, characterized in that a series of ventilation passages are formed by a groove B, a circumferential gap A, a vertical groove A, etc.