| 摘要 |
<p>PURPOSE:To surely prevent such a case where a battery is detached by mistake in an application state of a portable data input device. CONSTITUTION:A lock pin 22 is pushed in response to the opening action of a keyboard cover 15, and the tip 22b of the pin 22 is put into a lock pin inserting hole 24 formed on a single side face of a battery 18. Thus the battery 18 never comes off. Then the pin 22 is returned to its original place by the force of a spring 23 in response to the closing action of the cover 15. Thus the detachment preventing state of the battery 18 is canceled.</p> |
