| 摘要 |
A folding stage unit comprises a guide post and a stage proper. The guide post may be fixed to an indoor or outdoor support wall structure. An inner space of the guide post is generally divided into an inner chamber and outer chambers. Vertical grooves are provided in opposed side walls of the guide post, and make the outer chambers communicate with the outside of the guide post. A pair of vertically-movable supports are provided in the respective outer chambers. A vertically-movable balancer is located in the inner chamber. Mechanisms are provided in the inner space for connecting the supports and the balancer for opposite vertical movements. The stage proper includes a platform, a platform supporting structure with plural support legs which are pivotally connected to the bottom of the platform, and wheels provided in conjunction with respective foremost support legs to enable a front end portion of the stage proper to move smoothly toward or away from the guide post on a floor. Mechanisms provided for connecting a rear portion of the platform supporting structure to the supports through the grooves so that a rear portion of the stage proper can be moved along the guide post. A pair of opposed operating mechanisms are connected to the platform supporting structure for folding the stage proper from a horizontal position on the floor to a vertical position adjacent to the guide post or unfolding the stage proper from the vertical position to the horizontal position. Each operating mechanism includes a geared motor and an extensible swing arm member.
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