WRITING INSTRUMENT HAVING PEN-TIP APPEARING AND DISAPPEARING SYSTEM

摘要

The present invention relates to a writing instrument having a pen nib device, more particularly, a case 10 having a hinge portion 12; A pressing piece 20 including a hinge shaft 21 at one side to be fastened to the hinge part 12; A projection 22 formed on one side of the pressing piece 20; Pen nib (30) having a locking member 31; A pen core projection portion 40 having a hole for the appearance of the pen core 30 and fastened downwardly with the case 10; And a pen shim spring 50 provided at a lower end of the locking member 31.;Pushing piece, hinge axis, hinged government