JPS6360680U

JPS6360680U -

Info

Publication number: JPS6360680U
Application number: JP15599586U
Authority: JP
Priority date: 1986-10-09
Filing date: 1986-10-09
Publication date: 1988-04-22

Description

[Brief explanation of drawings]

第１図は本考案筆記具の一実施例の引込み状態
を上半分断面で示した正面図、第２図は同じくそ
の突出状態を部分断面で示した正面図、第３図は
本考案における出没機構の円筒カムの正面図、第
４図ａ，ｂはそれぞれその左側面図及び右側面図
、第５図は同じく出没機構の回転バー及びノツク
部の下半分断面で示した正面図、第６図ａ，ｂ，
ｃは本考案における出没機構の動作説明図、第７
図は従来筆記具の一例の引込み状態を上半分断面
で示した正面図、第８図は同じくその突出状態を
上半分断面で示した正面図、第９図は従来におけ
る出没機構の円筒カムの断面図、第１０図ａ，ｂ
はそれぞれ第９図のＸ_ａ―Ｘ_ａ線断面矢視図及び
Ｘ_ｂ―Ｘ_ｂ線断面図、第１１図は同じく出没機構
の回転カムの正面図、第１２図は第１１図のＸ
―Ｘ線断面矢視図、第１３図は同じく出没機構
のカムバーの正面図、第１４図は第１３図のＸＩ
Ｖ―ＸＩＶ線矢視図、第１５図は同じく出没機構
のノツク部の正断面図、第１６図ａ，ｂは従来に
おける出没機構の動作説明用展開図である。１……外筒、２……レフイール、３……ノツク
部、４……引込みばね、５……先端、６……円筒
カム、７……回転バー、８……前方突子、９……
後方突子、１０……レの字状浅溝、１０ａ……斜
面、１０ｂ……谷、１１……レの字状深溝、１１
ａ……斜面、１１ｂ……谷、１２……鋸歯状歯、
１２ａ……斜面、１２ｂ……谷、１４……内段部
、１５……傾斜突部、１６……リング溝。 Fig. 1 is a front view showing the retracted state of one embodiment of the writing instrument of the present invention in an upper half cross section, Fig. 2 is a front view showing the protruding state in a partial cross section, and Fig. 3 is the ejection/retraction mechanism in the present invention. 4a and b are respectively left and right side views of the cylindrical cam, FIG. 5 is a front view showing the lower half cross section of the rotating bar and the notch of the retracting mechanism, and FIG. 6 a, b,
c is an explanatory diagram of the operation of the retraction mechanism in the present invention, No. 7
The figure is a front view showing an example of a conventional writing instrument in a retracted state with an upper half cross section, Figure 8 is a front view showing the protruding state with an upper half cross section, and Figure 9 is a cross section of a cylindrical cam of a conventional ejection/retraction mechanism. Fig. 10a, b
are respectively a sectional view taken along the line X _a - X _a and a sectional view taken along the line X _b - X _b in FIG. 9, FIG.
- X-ray cross-sectional view, Fig. 13 is a front view of the cam bar of the same mechanism, Fig. 14 is the XI of Fig. 13
A view taken along the line V-XIV, FIG. 15 is a front sectional view of the notch portion of the ejection mechanism, and FIGS. 16a and 16b are exploded views for explaining the operation of the conventional ejection and retraction mechanism. DESCRIPTION OF SYMBOLS 1...Outer cylinder, 2...Refoil, 3...Knot part, 4...Retraction spring, 5...Tip, 6...Cylindrical cam, 7...Rotary bar, 8...Front protrusion, 9...
Posterior protrusion, 10... V-shaped shallow groove, 10a... Slope, 10b... Valley, 11... V-shaped deep groove, 11
a... Slope, 11b... Valley, 12... Sawtooth,
12a... Slope, 12b... Valley, 14... Inner step, 15... Inclined protrusion, 16... Ring groove.

Claims

[Scope of utility model registration request]

By inserting the refil 2 into the outer cylinder 1 and knocking the notch part 3 protruding from the rear end of the outer cylinder 1 against the retraction spring 4, the tip 5 of the refil 2 is pushed out from the tip of the outer cylinder 1 and held. In this writing instrument, the tip 5 of the refill 2 can be retracted by the spring force of the retraction spring 4 by reknocking the notch part 3 against the retraction spring 4, and an inner cylinder cam 6 is attached to the inner surface of the outer cylinder 1. A rotary bar 7 rotatably connected to the notch portion 3 is fitted into the inner cylindrical cam 6, and the refil 2 is locked to the front part of the rotary bar 7. In addition to providing the protrusion 8 and the rear protrusion 9, the cylindrical cam 6
In the circumferential direction of the front end surface, the front protrusion 8 alternately forms shallow grooves 10 and deep grooves 11 in the shape of a rectangle that press against the slopes 10a, 11a when the rotary bar 7 moves backward, and in the circumferential direction of the rear end surface, the front protrusion 8 forms A writing instrument in which the protrusion 9 forms serrated teeth 12 that press against the slope 12a when the rotary bar 7 moves forward.