Patent ID: 6227734
Filing Date: 2001-05-08
Classification: B43K

Abstract:
A knocking writing utensil comprising:an external cylinder having a guide hole formed therein;a wiring medium housed in the external cylinder so as to be movable in an axial direction;an elastic body for urging the writing medium rearwardly;a knock body exposed outwardly from the external cylinder to be knocked, wherein the knock body operates to move the writing medium between a withdrawal position at which the writing medium is withdrawn into said external cylinder and a forward position at which a tip of said writing medium protrudes from a tip of said external cylinder;a clip with its proximal end fixed to said external cylinder;an engagement body, provided within said external cylinder, for positioning the writing medium;an engagingly-locking protrusion formed on said engagement body;an engaging-lock receiving protruding portion includes an engaging-lock receiving portion at its front end being formed on a back surface of a non-proximate end of said clip, said guide hole being formed in the external cylinder so as to correspond to said engaging-lock receiving protruding portion of the clip, wherein the guide hole is wider than said engaging-lock receiving protruding portion in only one lateral side-of the guide hole relative to said engaging-lock receiving protruding portion, wherein said engagingly-locking protrusion is engaged with said engaging-lock receiving portion through said guide hole to held the writing medium at the forward portion and is disengaged from said engaging-lock receiving portion and placed behind said engaging-lock receiving protruding portion to hold the writing medium at the withdrawal position; anda knock bar, disposed inside said external cylinder, being integratedly operated with the knock body and including a cam portion;said cam portion being engageable with said engagement body;said cam portion guiding said engagingly-locking protrusion beyond said engaging-lock receiving protruding portion from behind it to said engaging-lock receiving portion and guiding said engagingly-locking protrusion from said engaging-lock receiving portion to behind said engaging-lock receiving protruding portion so as to pass by one lateral side of said engaging-lock receiving protruding portion.