JPH0273379U

JPH0273379U -

Info

Publication number: JPH0273379U
Application number: JP15355488U
Authority: JP
Priority date: 1988-11-28
Filing date: 1988-11-28
Publication date: 1990-06-05

Description

[Brief explanation of drawings]

図面は本考案に係る楕円、多角等のボールペン
の実施例を示したもので、第１図は一部を切欠し
た側面図、第２図は要部の拡大断面図、第３図は
同上のボールペン芯を引込めた状態の断面図、第
４図は第２図―線における拡大断面図、第５
図は第２図―線における拡大断面図、第６図
は第２図―線における拡大断面図、第７図は
第３図―線における拡大断面図である。１……軸筒、１ａ……縦条溝、２……キヤツプ
、２ａ……縦条溝、４……案内管、５……操作管
、８……カム筒、８ａ……傾斜カム溝、９……昇
降管、１２……突起、１３……固定部材、１４…
…ボールペン芯、１５……突起、１６……隆起突
条。 The drawings show examples of the elliptical, polygonal, etc. ballpoint pens according to the present invention. Figure 1 is a partially cutaway side view, Figure 2 is an enlarged cross-sectional view of the main part, and Figure 3 is the same as above. Figure 4 is an enlarged cross-sectional view along the line shown in Figure 2, Figure 5 is a cross-sectional view of the ballpoint pen with the retracted core.
The figures are an enlarged sectional view taken along the line of FIG. 2, FIG. 6 is an enlarged sectional view taken along the line of FIG. 2, and FIG. 7 is an enlarged sectional view taken along the line of FIG. 3. 1... Shaft tube, 1a... Vertical groove, 2... Cap, 2a... Vertical groove, 4... Guide tube, 5... Operating tube, 8... Cam cylinder, 8a... Inclined cam groove, 9...Elevating pipe, 12...Protrusion, 13...Fixing member, 14...
...ballpoint pen core, 15...protrusion, 16...raised ridge.

Claims

[Scope of utility model registration request]

It is equipped with an elliptical or polygonal shaft cylinder and a cap with vertical grooves on its circular inner circumferential surface, and an operating tube is fixed in the axial direction to the small diameter upper side of a guide tube that is connected and fixed to the upper end of the shaft cylinder. At the same time, a cam cylinder is fixed to the inside of the guide tube, and an elevator tube is fixed in the circumferential direction and movable in the axial direction through the operation tube, and the lower end thereof is fixed to the operating tube. A protrusion protruding from the circumferential surface is engaged with the inclined cam hole of the cam cylinder, the upper end of the ballpoint pen core is removably fixed to the upper end of the elevator tube, and a protrusion provided on the outer periphery of the guide tube is engaged with the inclined cam hole of the cam cylinder. a raised protrusion is provided on the outer periphery of the operating tube such that the protrusion of the elevator tube is located on the same axis as the protrusion of the guide tube at the upper end position or the lower end position of the inclined cam hole; A ballpoint pen of oval or polygonal shape, characterized in that the raised protrusion is engaged with a longitudinal groove of a cap fitted into an operating tube.