| 摘要 |
PURPOSE: A door structure of navigation case is provided to ensure convenience of a user by using a tension coil spring and a torsion coil spring to adopt a slidable button above a navigation case. CONSTITUTION: A door structure of navigation case comprises a button(10), an upper plate(20), a lower plate(30), a tension coil spring(40), a torsion coil spring(50), a stopper, a switch(70), first hook and a case. The button(10) is installed with sliding-type in the upper part of the navigation case. If the button(10) slides, the upper plate(20) is displaced in the same direction. The upper plate(20) is connected to the tension coil spring(40), pushes first protrusion(31) of the lower plate(30) and presses the switch(70). The lower plate(30) is pushed by the displacement of the upper plate(20) and has second hook to be engaged with the first hook. The stopper stops the first protrusion(31) of the lower plate(30). Second protrusion of the lower plate(30) is pushed by the first hook to close the door. The closed door is fixed by the second hook.
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