| 摘要 |
PURPOSE: A hatch opening and closing device and a movable unit with the same are provided with a small volume and reduced weight as a plurality of speed reducer gears and a spring are not installed. CONSTITUTION: A hatch opening and closing device comprises a shaft and a lift control unit. The shaft is extended through a hatch cover, and spiral grooves are formed on the inner periphery of the shaft. The lift control unit comprises an elevating shaft(310), a ratchet(316), and a lever. The elevating shaft is inserted into the shaft, and threads are engaged with the spiral grooves. The ratchet is connected to the elevating shaft, and rotates the elevating shaft. A stopping member(315) of the lever restricts a rotational direction of the ratchet.
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