Writing implement having a bar type lead element and molding method of the lead element therein

Abstract

A writing implement has a bar type lead element, a container formed as a hollow member having one and opposite ends being open, a supporting shaft inserted in the container to be moved therein linearly in an axial direction, the supporting shaft being formed as a hollow member having a center hole pierced therethrough, and an adjustment member movably connected to a rear end of the container to be rotated, the rotation of the adjustment member causes the supporting shaft to be linearly moved in the container, the adjustment member being formed as a hollow member having one and opposite ends being open to be in fluid communication with the center hole 42. Accordingly, the raw material of the lead element is injected into the container from a rear end of the adjustment member through the center hole, and solidifies into the lead element, and the lead element is supported on the front end of the supporting shaft at its rear end, and moved in accordance with the movement of the supporting shaft. Accordingly, the raw material in melt state can be injected into the container with all the main parts being assembled in place. As a result, the manufacturing process becomes simplified, and the automation of assembly line can be achieved easily.

Dependencies are inferred from the claim text.