JPH0282589U

JPH0282589U -

Info

Publication number: JPH0282589U
Application number: JP16189788U
Authority: JP
Priority date: 1988-12-15
Filing date: 1988-12-15
Publication date: 1990-06-26

Description

[Brief explanation of drawings]

第１図は全体の縦断面図、第２図はガイド筒の
平面図、第３図はガイド筒の縦断面図、第４図は
第２図Ａ−Ａ線横断面図、第５図は第２図Ｂ−Ｂ
線横断面図、第６図は第２図Ｃ−Ｃ線横断面図、
第７図はキヤツプの平面図、第８図はキヤツプの
縦断面図、第９図は第８図Ｄ−Ｄ線横断面図、第
１０図は第８図Ｅ−Ｅ線横断面図、第１１図はノ
ツク棒の一部切断側面図、第１２図は回転子の側
面図、第１３図は回転子の縦断面図、第１４図は
回転子の前端面図である。第１５図は摺動コマの
急な角度に形成した突起が円筒カムの切欠部に係
合した状態を示した説明図、第１６図は通常に係
合した状態を示した説明図である。１……ガイド筒、２……筒部、３……案内溝、
４……ツバ、５……小孔、６……筆記体、７……
受け棒、８……摺動コマ、９……リターンスプリ
ング、１０……先軸、１１……円筒カム受け、１
５……キヤツプ、１８……リブ、１９……溝、２
０……回転止リブ、２１……回転ストツパー片、
２２……円筒カム、２３……カム斜面、２４……
溝、２６……切欠部、２７……当接スプリング、
２８……ノツク棒、３２……回転子、３７……先
端筆記部、３８……軸先端口、５１……カム斜面
、５２，５３……突起部。 Fig. 1 is a longitudinal sectional view of the whole, Fig. 2 is a plan view of the guide cylinder, Fig. 3 is a longitudinal sectional view of the guide cylinder, Fig. 4 is a cross-sectional view taken along line A-A in Fig. 2, and Fig. 5 is a cross-sectional view of the guide cylinder. Figure 2 B-B
Figure 6 is a cross-sectional view taken along line C-C in Figure 2.
Fig. 7 is a plan view of the cap, Fig. 8 is a vertical cross-sectional view of the cap, Fig. 9 is a cross-sectional view taken along line D-D in Fig. 8, Fig. 10 is a cross-sectional view taken along line E-E in Fig. 8, 11 is a partially cutaway side view of the knock rod, FIG. 12 is a side view of the rotor, FIG. 13 is a longitudinal sectional view of the rotor, and FIG. 14 is a front end view of the rotor. FIG. 15 is an explanatory diagram showing a state in which a protrusion formed at a steep angle on a sliding piece engages with a notch of a cylindrical cam, and FIG. 16 is an explanatory diagram showing a normally engaged state. 1... Guide tube, 2... Cylinder part, 3... Guide groove,
4... Brim, 5... Small hole, 6... Cursive, 7...
Reception rod, 8...Sliding piece, 9...Return spring, 10...Front shaft, 11...Cylindrical cam receiver, 1
5... Cap, 18... Rib, 19... Groove, 2
0... Rotation stopper rib, 21... Rotation stopper piece,
22... Cylindrical cam, 23... Cam slope, 24...
Groove, 26... Notch, 27... Contact spring,
28...Knob bar, 32...Rotor, 37...Tip writing portion, 38...Shaft tip opening, 51...Cam slope, 52, 53...Protrusion portion.

Claims

[Scope of utility model registration request]

A guide cylinder having a plurality of guide grooves in the axial direction is fixed to the front shaft, and a plurality of writing pieces each having a sliding piece attached to the rear end are moved relative to the guide cylinder so that the sliding pieces move back and forth along each guide groove. A cylindrical cam having a cam slope that moves in the axial direction is integrally attached to the inner surface of the cap at least in the rotational direction, and the cylindrical cam is fitted against the guide cylinder so that the cam slope and each writing body slide. At the same time, assemble the pieces so that they are in contact with each other, the cap is rotatably fitted into the guide tube, and by rotating the cap, each sliding piece slides on the cam slope, allowing each writing body to move forward and backward. In a compound writing instrument in which the writing tip of the cursive body protrudes and retracts from the shaft tip opening, a substantially rectangular notch is provided at the tip of the cylindrical cam, and at least one part of the cylindrical cam is cut out on the cam slope of the cylindrical cam. A compound writing instrument characterized in that a tip protrusion of a sliding piece that has substantially the same sliding cam slope and engages with a notch of the cylindrical cam is formed at an angle that is moderately steeper than the angle of the cam slope.