Lifting screen

Abstract

The invention relates to a lifting screen, comprising a supporting frame; wherein the supporting frame is internally provided with a stainless steel winding drum assembly, the stainless steel winding drum assembly comprises a stainless steel winding drum, the stainless steel winding drum is internally provided with a concentric first gear shaft and an eccentric second gear shaft, the first gear shaft and the second gear shaft are meshed, and the second gear shaft is sheathed with a steel wire rope winding drum and is arranged in the stainless steel winding drum by virtue of a supporting member; the first gear shaft is connected with a reducer motor; the steel wire rope of the stainless steel winding drum is suspended with a screen curtain, the screen curtain is provided with an upper rod and a lower rod; the rotating shaft of the stainless steel winding drum is provided with an electromagnetic brake, the electromagnetic brake and the reducer motor are all connected with an electrical control system arranged in an electrical box; and the lower side edge axial length of the stainless steel winding drum is opened with a notch for containing the upper rod of the screen curtain. The invention has the beneficial effects that structure is compact, occupying space is small, performance is stable, action is reliable, noise is less, and cost is low.

Description

technical field [0001] The invention relates to a lifting screen. Background technique [0002] The projection screen has a relatively suitable suspension height relative to the audience's line of sight, generally within the range of 0.8-2.5 meters from the ground, and the storage box of the screen is just above 2.5 meters. Modern public buildings, including ordinary residential buildings, have higher and higher requirements for space height, and the larger space height puts forward new requirements for the suspension, storage and space occupation of projection screens. [0003] There are usually two solutions. The first is that the collection box is still located above 2.5 meters. The disadvantage is that the collection box is in the middle, which affects the interior decoration and appearance, and takes up space; the second is that the collection box is moved up to the ceiling of the building. , to increase the height of the curtain, the disadvantage is that the volume of...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that the volume of the storage box of the existing projection screen and the deformation of the screen occupy a large space and is not beautiful, and provides a lifting screen that satisfies the requirements of hanging, storing and occupying a small space for the projection screen after the height of the building is increased.

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