| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a writing utensil held by a normal way, wherein operations such as knock pushing and cap removal are unnecessary, a pen tip protrudes only during writing, and the pen tip penetrates when the writing utensil is released. <P>SOLUTION: When an operation part (2c) is pressed by a first finger (thumb) and a second finger (index finger), the driving slope (5f) of an engagement part (2d) is engaged. Then, a cover body (5) is moved backward relative to an operation body (2), and a pen tip protrudes to become in a writing enable state. When the pressing of the operation part (2c) by the first finger (thumb) and the second finger (index finger) is released, the cover body (5) advances to a regulation stage part (5h) where the engagement part (2c) is connected to the driving slope (5f), to become in a state where the pen tip (3a) is penetrated. <P>COPYRIGHT: (C)2011,JPO&INPIT |
