JPS6360384U

JPS6360384U -

Info

Publication number: JPS6360384U
Application number: JP15303886U
Authority: JP
Priority date: 1986-10-03
Filing date: 1986-10-03
Publication date: 1988-04-21

Description

[Brief explanation of the drawing]

第１図は本考案筆記具の第１実施例を示す縦断
面図、第２図はこの第１実施例で使用する回転―
直線移動変換機構を構成する部品の斜視図、第３
図は第２実施例を示す縦断面図、第４図はこの第
２実施例で使用する回転―直線移動機構を構成す
る部品の斜視図、第５図ａ〜ｃは本考案における
回転―直線移動変換機構の要部の各例を示す説明
図、第６図は第３実施例を示す縦断面図、第７図
はこの第３実施例で使用する回転―直線移動変換
機構を構成する部品の斜視図である。１……クリツプ、２……外筒、３……筆記軸体
、４……ノツク部、４ａ……操作部、６……先端
、９……突子、１１……回転筒、１２ａ……挿入
路、１２ｂ……終点路、１２ｃ……ラセン路、１
２ｄ……始点路、１３ａ……突部、１３ｂ……環
状溝、３７……ガイド孔、３７ａ……頚れ部、３
８……突曲路面。 Fig. 1 is a vertical cross-sectional view showing the first embodiment of the writing instrument of the present invention, and Fig. 2 is a rotating section used in this first embodiment.
Perspective view of parts constituting the linear movement conversion mechanism, 3rd
The figure is a longitudinal sectional view showing the second embodiment, FIG. 4 is a perspective view of parts constituting the rotation-linear movement mechanism used in the second embodiment, and FIGS. 5 a to c are rotation-linear movement mechanisms according to the present invention. An explanatory diagram showing each example of the main parts of the movement conversion mechanism, Fig. 6 is a vertical cross-sectional view showing the third embodiment, and Fig. 7 shows parts constituting the rotation-linear movement conversion mechanism used in the third embodiment. FIG. DESCRIPTION OF SYMBOLS 1...Clip, 2...Outer tube, 3...Writing shaft body, 4...Knob part, 4a...Operation part, 6...Tip, 9...Protrusion, 11...Rotating tube, 12a... Insertion path, 12b...End point path, 12c...Spiral path, 1
2d... Starting point path, 13a... Projection, 13b... Annular groove, 37... Guide hole, 37a... Neck, 3
8... Curved road surface.

Claims

[Scope of utility model registration request]

By inserting the writing shaft 3 into the outer cylinder 2 and rotating the operating part 4a protruding from the rear end of the outer cylinder 2, the tip 6 of the writing shaft 3 is held so as to protrude from the front end of the outer cylinder 2, and is operated. In a writing instrument in which the tip 6 of the writing shaft 3 can be retracted by rotating the portion 4a in the opposite direction, the operating portion 4a is provided at the rear end of the writing shaft 3.
are integrally provided, a protrusion 9 is provided on the outer surface of the rear end of the writing shaft 3 or the outer surface of the operating part 4a, and a helical path 12c is formed on the rear end of the outer cylinder 2,
A writing instrument formed by fitting the protrusion 9 into the helical path 12c.