JPS5848489U - Forward and backward device for ball chuck for sharp pencil - Google Patents

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

【図面の簡単な説明】[Brief explanation of drawings]

−第１図はこの考案の要部を示す断面図、第２図から第
４図までの作動の順番に示した半裁断面図、第５−Ａ図
から第５−ｃ図までは抵抗個所の他の変形例を示す。- Figure 1 is a sectional view showing the main parts of this invention, Figures 2 to 4 are half-cut sectional views showing the order of operation, and Figures 5-A to 5-c are resistor points. Another modification is shown.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 軸筒１１内に設けた内装バネ１０で後方に付勢されるチ
ャック作動体５の後端に該内装バネ１０よりも強い押バ
ネ１５を配設し、該内装バネ１０に抗したチャック作動
体５の前進およびこれに同伴したチャック体３の前進を
可能とする押圧部材１６を該押バネ１５の後端に設け、
該押圧部材１６には上記前進が完了後にチャック作動体
５とチャック体３との間に張設したチャック用バネ９に
抗してチャック体３を更に前進可能とする張出個所１７
を形成し、前記更に前進したチャック体３を係止でき且
つチャック作動体５の戻りにより圧縮されたチャック用
バネ９の力で上記係止を解除することができる抵抗個所
１８を軸筒１１内面に形成してなるシャープペンシル用
ボールチャックの前進後退装置。A push spring 15 stronger than the internal spring 10 is disposed at the rear end of the chuck actuating body 5 which is urged backward by an internal spring 10 provided in the shaft cylinder 11, and the chuck actuating body resists the internal spring 10. A pressing member 16 is provided at the rear end of the pressing spring 15 to enable the movement of the chuck body 5 and the accompanying movement of the chuck body 3;
The pressing member 16 has an overhanging portion 17 that allows the chuck body 3 to move further against the chuck spring 9 stretched between the chuck actuating body 5 and the chuck body 3 after the above-mentioned advance is completed.
, and a resistance point 18 that can lock the further advanced chuck body 3 and release the lock by the force of the chuck spring 9 compressed by the return of the chuck operating body 5 is provided on the inner surface of the shaft cylinder 11. A mechanical pencil ball chuck advancement/retraction device formed of.