Patent ID: 6126350
Filing Date: 2000-10-03
Classification: B43K

Abstract:
A writing instrument comprising an outer barrel comprised of a front barrel and a rear barrel connected to the front barrel with a front end of the rear barrel being inserted in a rear end of the front barrel and a writing medium advancing mechanism assembled in the outer barrel by inserting the writing medium advancing mechanism into the outer barrel from a rear end side of the outer barrel, wherein the writing medium advancing mechanism has a sleeve provided with resilient engaging means on an outer surface of the sleeve, the engaging means being displaceable in radial direction, a step portion is formed on an inner surface of the front barrel, a front end portion of the sleeve is brought into contact with the step portion of the front barrel and the resilient engaging means of sleeve is engaged with the front end of the rear barrel so that the writing medium advancing mechanism is held in the outer barrel, and the sleeve is provided with an elastic portion which can be elastic in an axial direction of the sleeve, between the front end portion of the sleeve and the engaging means of the sleeve.