| 摘要 |
<p>A stationery tool has a body (10), a pushbutton (12), a working element (14), and a push-proof device. The pushbutton (12) is pushably and rotatably mounted on an end of the body (10). The push-proof device is mounted between the body (10) and the pushbutton (12) and has a blocking protrusion and a blocking segment (30). The blocking protrusion is disposed on the pushbutton (12). The blocking segment (30) is disposed on the body (10), selectively abuts the blocking protrusion and has a passage defined in the blocking segment (30) to allow the blocking protrusion to pass the blocking segment (30). Accordingly, a push-proof capability is provided to the pushbutton (12) to prevent the working element (14) from extending out of the body (10) unintentionally.</p> |
