JPS5874590U

JPS5874590U - double-ended writing instrument

Info

Publication number: JPS5874590U
Application number: JP17090581U
Authority: JP
Inventors: 恭夫村越
Original assignee: 株式会社　トンボ鉛筆
Priority date: 1981-11-17
Filing date: 1981-11-17
Publication date: 1983-05-20

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案による両頭筆記具の不使用時の断面図で
あり、第２図はスプリングをボールペン先端金具の押圧
部と頭冠との間に介した場合の要部の断面図であり、第
３図はスプリングをボールペン先端金具の段部と頭冠と
の間に介した場合め要部の断面図であり、第４図はスプ
リングをキャップスライドの後端面ど頭冠との間に介し
た場合の要部の断面図であり、第５図はチャックが鉛筆
芯を掴持した際の断面図である。　　。１・・・外軸、２・・・チャック、３・・・締めリング
、４・・・芯ケース、５・・・膨出部、６・・・キャッ
プスライド、７・・・係合突起、８・・・内キャップ、
９・・・キャップ、１０・・・ボールペン先端金具、１
１・・・押圧部、１２・・・環状突起、１３・・・頭冠
、１４・・・スプリング、１５・・・テーパ面、１６・
・・段部、Ｓ・・・シャープペンシル部、Ｂ・・・ボー
ルペン体。Fig. 1 is a sectional view of the double-ended writing instrument according to the present invention when not in use, and Fig. 2 is a sectional view of the main parts when a spring is interposed between the pressing part of the ballpoint pen tip fitting and the crown. Figure 3 is a sectional view of the main part of the spring inserted between the stepped part of the ballpoint pen tip fitting and the crown, and Figure 4 is a sectional view of the main part of the spring inserted between the rear end of the cap slide and the crown. FIG. 5 is a cross-sectional view of the main part when the chuck is gripping the pencil lead. . DESCRIPTION OF SYMBOLS 1... Outer shaft, 2... Chuck, 3... Tightening ring, 4... Core case, 5... Swelling part, 6... Cap slide, 7... Engaging protrusion, 8...Inner cap,
9...Cap, 10...Ballpoint pen tip fitting, 1
DESCRIPTION OF SYMBOLS 1... Pressing part, 12... Annular projection, 13... Crown, 14... Spring, 15... Tapered surface, 16...
...Double part, S...Mechanical pencil part, B...Ballpoint pen body.

Claims

[Scope of utility model registration request]

(1) At one end of the outer shaft 1, a sharp sill portion S including a chunk 2 and a tightening ring 3 is provided, and a ball body B is inserted into the rear end of the core case 4, and the outer shaft 1 A cap slide 6 having a bulging portion 5 at the other end is integrally attached, an inner cap 8 having an engaging protrusion 7 at the tip is fixed to the cap 9, and the pressing portion 1 of the ballpoint pen tip holder 10 is attached.
A crown 13 having an annular protrusion 12 with a length reaching up to 1 is fitted into the rear end of the inner cap 8, and at the same time a spring 14 is fixed to the front end surface of the crown 13 to constantly press the cap 9 backward, This double-ended writing instrument has a structure in which the engaging protrusion 7 is engaged with the engaging protrusion 7 over the bulge 5 of the cap slide 6.

(2) The double-ended writing instrument according to claim 1, in which the spring 14 is interposed between the tapered surface 15 of the ballpoint pen end fitting 10 and the crown 13.

(3) The double-ended writing instrument according to claim 1, in which the spring 14 is interposed between the pressing portion 11 of the ballpoint pen end fitting 10 and the crown 13.

(4) The double-ended writing instrument according to claim 1, in which the spring 14 is interposed between the stepped portion 16 of the ballpoint pen end fitting 10 and the crown 13.

(5) The double-ended writing instrument according to claim 1, in which the spring 14 is interposed between the rear end surface of the cap slide 6 and the crown 13.