| 摘要 |
FIELD: machine building. ^ SUBSTANCE: device consists of upper and lower horizontal elements of frame possessing in essence U-shape cross section with two opposite flanges and rib connecting said flanges. The frame of the device consists of two opposite vertical side elements connecting the horizontal elements of the frame and multitude of vertical by shape bars of display elements; the bars have triangle cross- section, are mounted in the upper and lower frame elements and are designed to rotate. Separate tooth mechanisms, arranged on one of the horizontal elements of the frame to drive corresponding display elements to rotate, are equipped with a drive gear with at least one tooth for periodic engaging a driven triangle tooth gear connected to the display element. The device consists of a driven electric motor connected to a common drive shaft for simultaneous rotation of corresponding driven gears of tooth mechanisms. The tooth mechanisms are assembled on a common mounting plate to form a drive module designed to slide along guides on flanges of one of U-shape horizontal elements of the frame. The drive module forms the plate of the bottom overlapping a gap between the flanges of one element of the frame. ^ EFFECT: facilitating quick and simplified assembly of sign board with changing image. ^ 6 cl, 12 dwg |
