KNOCK AND PRESSING TYPE WRITING INSTRUMENT

摘要

PURPOSE: A knock press writing instrument is provided to easily discharge ink from the writing instrument when writing by increasing the pressure inside a writing lead by operating a knock press. CONSTITUTION: A knock press writing instrument comprises the following: a shaft case(10); a writing lead(20); a pressuring tube(50) located on the opposite side of one tip of the writing lead in the inside of the shaft case; a tube support member(40) assembled with other tip of the writing lead; an elastic member(30) installed inside the shaft case; a pressing member(70) assembled to the backend of the shaft case; and a knock member(60) installed in between the pressing member and the tube support member while maintaining the exposed state, or the storing state of the tip of the writing lead from the shaft case.