| 摘要 |
<p>PURPOSE:To eliminate the necessity of providing a locking board separately and to reduce a material and a manday by forming the locking board flexible in a board thickness direction to a mechanical chassis in one body and forming an engaging part which is engagible-detachable from the engaging part of a mode lever at the board part. CONSTITUTION:A locking board 4 and a main part 5 are in the same position in a board thickness direction in a condition in which a mechanical chassis 2 is formed, and the board 4 is held in a locking position in which an upper face 4a is in the same planes as the upper face of the main part 5 by a bullet piece 7 when the pressure of the board thickness does not exist. Besides, when the board 4 is pressed upward, it is turned in a lock canceling direction with a hinge part 6 as a center. At the same time, the bullet piece 7 is deformed to lengthen the distance of both edges, bullet power to a counterclockwise direction with the position continuous with the main part 5 as a turning center is stored in the bullet piece 7. Consequently, when the pressure to the board 4 is canceled, the board 4 is moved back to the locking position. Thus, the one part of the mechanical chassis can be made function as the locking board and a material and a manday can be reduced.</p> |
