JPS63179175U

JPS63179175U -

Info

Publication number: JPS63179175U
Application number: JP6945387U
Authority: JP
Priority date: 1987-05-08
Filing date: 1987-05-08
Publication date: 1988-11-21
Also published as: JPH0432304Y2

Description

[Brief explanation of the drawing]

図は本考案の実施例を示したもので、第１図は
軸長が伸長した状態の要部を断面とした側面図、
第２図は軸長が短縮した状態の要部を断面とした
側面図である。１……先軸、２……チヤツク機構、３……芯ケ
ース、４……弾性片部、５……係止部、６……係
止突起、７……止リング、８……キヤツプ、９…
…飾りリング、１０……係止解除リング、１１…
…抜止リング、１２……筒部、１３……係止孔、
１４……スリツト、１５……係止部、１６……鍔
、１７……消ゴム、１８……消ゴム止金具、１９
……嵌着筒部、２０……ノツク筒、２１……消ゴ
ムホルダー、２２……天冠、２３……コイルスプ
リング、２４……コイルスプリング。 The figures show an embodiment of the present invention, and Fig. 1 is a side view of the main part in a state where the axial length is extended;
FIG. 2 is a cross-sectional side view of the main part in a state where the axial length is shortened. DESCRIPTION OF SYMBOLS 1... Tip shaft, 2... Chuck mechanism, 3... Core case, 4... Elastic piece part, 5... Locking part, 6... Locking protrusion, 7... Stop ring, 8... Cap, 9...
...Decorative ring, 10...Latch release ring, 11...
... Retention ring, 12 ... Cylinder part, 13 ... Locking hole,
14...Slit, 15...Locking part, 16...Brim, 17...Eraser, 18...Eraser stopper, 19
...Fitting cylinder part, 20 ... Knot tube, 21 ... Eraser holder, 22 ... Crown, 23 ... Coil spring, 24 ... Coil spring.

Claims

[Scope of utility model registration request]

A locking protrusion that is elastically displaceable in the radial direction is provided on the side surface of the rear end of the lead case, which is attached to the inside of the lead shaft and moves the lead in the axial direction to extend the lead.
A lock release ring is fixed to a predetermined position on the inner surface of the cap that is freely movable in the axial direction with respect to the tip shaft, and the locking release ring collides with the locking protrusion of the lead case and displaces it toward the center when the cap is moved forward with respect to the tip shaft. , having a cylindrical part on the front end side into which the rear end of the core case is inserted, a locking hole into which the locking protrusion of the core case is fitted on the side surface of the cylindrical part, and a rear end edge of the locking hole. The locking part and the rear end constitute an eraser holder into which a knob cylinder is fitted, and the eraser holder is pressed by a coil spring inside the cap and normally maintains a fixed state so as to interlock with the cap. When a knock operation is applied, the coil spring is compressed and installed so that it can move freely in the axial direction with respect to the cap, and when the eraser holder is in the non-knocked state, the lock release ring is inserted slightly forward of the locking part of the locking hole. Set the position of
When the cap is moved forward relative to the tip shaft, the rear end of the lead case sinks into the cylindrical portion of the eraser holder, and when the cap is moved back relative to the tip shaft, the locking protrusion on the lead case locks the eraser holder. A retractable sharp pencil characterized in that the dimensions are set so that it fits into a hole and is located in front of a lock release ring.