| 摘要 |
PURPOSE: A stylus pen is provided to prevent piston rod to be drawn out or to be inserted regardless or intention of a user by one chuck member. CONSTITUTION: A piston rod is accepted to a cylinder body(10). A pressure member for information input touch(30) is combined to shear of the cylinder body or the shear of the piston rod. A chuck member(40) is inserted inside the cylinder body. The chuck member prevents the piston rod to be drawn out or to be inserted by unintentionally. A body cap(60) is combined inside the front of the cylinder body.
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