| 摘要 |
<p>PURPOSE:To prevent a locking means provided between a protection cover and a keyboard panel from being opened by automatically locking a lock pawl to an opening for lock when the protection cover is closed and to automatically house the lock pawl inside the protection cover when the protection cover is opened. CONSTITUTION:This device is composed of a slider 10, which is provided inside a protection cover 1 so as to be slid parallelly with the side face of the protection cover 1 while using a sliding operation knob 9 and an elastic member 14, and an eccentric cam 15 equipped with a lock pawl 17 almost vertically pivotally supported on both left and right side faces and extended in a direction intersecting to this pivotally supported part. The center part on the side face of the eccentric cam 15 is pivotally supported so as to be rotated at one end of the slider 10, and a part opposite this pivotally supported part and positioned out of the center of the side face are pivotally supported by a fixer 19 of the protection cover 1. Then, the motion of the slider 10 is transformed to rotary motion by the eccentric cam 15, and the lock pawl 17 can be protruded from the protection cover 1 or housed inside the protection cover 1.</p> |
