Propaganda display rack
A display rack and negative pressure cavity technology, applied in the field of publicity display racks, can solve the problems of poster pulling, poster damage, poster wrinkling, etc., and achieve the effect of convenient operation, easy trampling, and avoiding damage
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Embodiment 1
[0028] like figure 1 As shown, the publicity display rack of this embodiment includes a seat body 10 and a publicity display rack body 20, the seat body 10 is arranged at both ends of the publicity display rack body 20, and the publicity display rack body 20 is clamped in the middle, thereby supporting the publicity display rack body 20 . The publicity display rack body 20 is provided with adsorption units and pasting units, each of which is provided with six adsorption units and pasting units, and one side of the adsorption units and the pasting units is arranged at intervals. The front of the publicity display rack body 20 is an adhesive surface, and the adhesive surface is used for pasting posters or publicity newspapers.
[0029] like figure 2 , image 3 As shown, both the adsorption unit and the pasting unit include a piston chamber, a negative pressure chamber and a piston 41 disposed in the piston chamber. The piston chamber includes a first piston chamber 23a and ...
Embodiment 2
[0037] Such as Figure 4 As shown, the difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the rotating shaft 30 drives the piston 41 to slide through the crank 51 slider mechanism; its specific structure is: the rotating shaft 30 is welded with a crank 51, and the bottom of the piston 41 Welded with pull rod 53, pull rod 53 and crank 51 are connected by connecting rod 52, and one end of connecting rod 52 is hinged with the lower end of pull rod 53, and the other end of connecting rod 52 is hinged with the end of crank 51; Thereby make crank 51, connecting rod 52 and piston 41 form crank 51 slide block mechanism, then rotating shaft 30 can drive piston 41 to slide when rotating.
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