| 摘要 |
PURPOSE: A banner stand is provided to elevate a banner without the tilt of a side by rotating vertical axes of both sides. CONSTITUTION: Left and right vertical shafts(130,140) adjoin each end(110a,110b,120a,120b) of lower and upper driving shafts(110,120). A first to a forth bevel gear units(150~180) connect each end(130a,130b,140a,140b) of the left and right vertical shafts with each end of the lower and upper driving shafts. A power delivering unit(190) delivers rotary driving power to the lower driving shaft. A plurality of support shafts(213) are projected on moving pipes(210,220) and a fixing pipe(230). A plurality of connecting units(260) connect the supports shafts with each end of rotary wing(250). |
