1. Field of the Invention
This invention relates to the filed of mechanical pencils, especially to a side knock type mechanical pencil.
2. Description of the Related Art
Nowadays, the mechanical pencil can be used continuously by refilling the lead so that it is used frequently by the people when they work and study. The principle of mechanical pencils made in the prior art is to drive the lead to come out by pressing a knock button disposed on a rear end of the pencil.
It is known from the above that when using the mechanical pencil according to the prior art, the user usually has to stop writing, move his/her hand to the rear end of the pencil, and then press the button disposed on the rear end of the pencil so as to make the lead come out. Therefore, the mechanical pencil according to the prior art, has less practicality.