Patent ID: 8480322

Claim:
A side knock mechanical pencil, comprising a knock button, a barrel, an intermediate lead tube and a clip; a fixed hole is formed in a side wall of a front end of the barrel, and a rib groove is formed in an inner front side of the fixed hole; at least one button groove is formed in a front end of the knock button, and at least one region with an inclined plane is formed at a lower side of a rear end of the knock button; the knock button is embedded in the side wall of the barrel through the fixed hole and the button groove of the front end of the button is engaged with the rib groove of the fixed hole, at least one circular bulge which is adapted to engage with the inclined plane is disposed on a side of the intermediate lead tube such that the intermediate lead tube of the mechanical pencil will move in a reciprocating direction when the circular bulge of the tube is actuated by engagement with the inclined plane of the button.