| 摘要 |
PURPOSE:To provide a positive restriction of vibration during operation and improve an outer appearance by a method wherein when a front panel is closed, a hook part is fixed to a receiving part of a front case and in turn when the front panel is opened, a special holding device is opened and the lower-most hook part is unfastened from the receiving part with a spring force of the special opening or closing device. CONSTITUTION:Under a condition in which a front panel 19 is closed, it is fixed by a projection 23 of a front panel 19 and a special holding device 24 of a front ease 17. A hook part 25 is engaged with the receiving part 26 at the lower-most position at the central part of the front panel 19 and fixed there. When the front panel 19 is opened, two lower-most ends of right and left sides of the front panel 19 are depressed with a finger, resulting in that a fixing of the special holding device 24 is released, and both ends of the right and left sides of the front panel 19 are slightly opened in advance with a force of a spring 21 of the special opening or closing device 22 and a resin resiliency of the front panel 19. Due to this fact, the central part of the front panel 19 is entirely lifted up by about 1.5 mm in the direction of arrow A. Accordingly, the hook part 25 is disengaged from the receiving part 26 and the front panel 19 is smoothly opened. |
