JPS6225589U

JPS6225589U -

Info

Publication number: JPS6225589U
Application number: JP11592185U
Authority: JP
Priority date: 1985-07-30
Filing date: 1985-07-30
Publication date: 1987-02-17

Description

[Brief explanation of the drawing]

第１図は、この考案の一実施例の縦断面図、第
２図は、リードチヤツクの頭部の平面図、第３図
乃至第５図は、芯送り出し動作の説明図を示す。１は外筒、３は芯パイプ、５はリードチヤツク
、６はチヤツク締付リング、８はスリーブ、１０
はチヤツク締付用の弾性体、１７は弾性体。 FIG. 1 is a longitudinal sectional view of an embodiment of this invention, FIG. 2 is a plan view of the head of the lead chuck, and FIGS. 3 to 5 are illustrations of the lead feeding operation. 1 is an outer cylinder, 3 is a core pipe, 5 is a lead chuck, 6 is a chuck tightening ring, 8 is a sleeve, 10
17 is an elastic body for tightening the chuck.

Claims

[Scope of utility model registration request]

A core pipe 3 is housed in an outer cylinder 1 so as to be slidable in the axial direction, and a core pipe 3 is disposed on the tip side of the core pipe 3.
A lead chuck 5 for attaching a core that allows the lead to move forward but prevents it from retreating; and a tapered inner wall is fitted onto the head of the lead chuck 5, and movement toward the rear end is restricted by a sleeve 8. A tightening ring 6, an elastic body 10 for tightening a chuck with a small coefficient of elasticity elastically elasticized between the sleeve 8 and the lead chuck 5, and an elastic body 10 that is slidable in the axial direction toward the distal end side of the lead chuck 5. A sharp pencil comprising a slider 12 which is arranged and biased forward by an elastic body 17 having a larger elasticity coefficient than the elastic body 10.