Integral folding frame type framework projection screen

Abstract

The invention discloses an integral folding frame type framework projection screen. The integral folding frame type framework projection screen comprises screen cloth and a scroll. The integral folding frame type framework projection screen is characterized by further comprising a framework which consists of two long side frames, four short side frames and six shaftless hinges, wherein the shaftless hinges which are internally arranged between the long side frames and the short side frames are fixedly connected to tube walls of the long side frames and the short side frames which are fixedly connected to the inside of the framework by virtue of a connecting rod of a shaftless hinge rotary plate; the shaftless hinges which are internally arranged between the two short side frames are fixedly connected on the tube walls of the two short side frames which are fixedly connected to the outside of the framework by virtue of the connecting rod of the shaftless hinge rotary plate; two groups of electromagnets are fixedly connected on the end heads of the short side frames respectively; supporting bases are fixedly connected on the back surface of the framework and the two ends of each long side frame respectively, at least one scroll is arranged between the supporting bases at the two ends of each long side frame and fixedly connected with the supporting bases; the screen cloth is arranged between the framework and the scroll; the two sides of the screen cloth are fixedly connected with the scroll which is fixedly connected on the long side frames or the long side frames respectively; and two groups of magnetic bars are respectively arranged at inner and outer sides of the screen cloth, between the short side frames of the framework and the screen cloth and fixedly connected.

Description

technical field [0001] The invention relates to a projection screen, which is an integral folding frame projection screen. Background technique [0002] The projection screen is a tool used to display images and video files in movies, offices, home theaters and large conferences. There are many types of projection screens, most of which are electric projection screens and frame projection screens used in offices, home theaters and large conferences. The electric projection screen adopts a reel retractable structure, which has the advantages of small volume after retraction, convenient retraction, and easy maintenance of the screen surface. However, due to the uneven force on the four sides, V-shaped lines, water ripples, uneven screen surface and Defects such as edges that are not straight and difficult to repair. The frame projection screen is fixed by profiles to form a frame. Spring hooks or pull buckles are set on the frame. The advantages of deformation, but there ar...

AI Technical Summary

Problems solved by technology

The electric projection screen adopts a reel retractable structure, which has the advantages of small volume after retraction, convenient retraction, and easy maintenance of the screen surface. However, due to the uneven force on the four sides, V-shaped lines, water ripples, uneven screen surface and Disadvantages such as not straight edges and difficult to repair

The frame projection screen is fixed by profiles to form a frame. Spring hooks or pull buckles are set on the frame. The advantages of deformation, but there are also disadvantages such as large area, difficult to store, easy to get dirty and aging, and poor coordination with the surrounding environment; there are also structures in which the frame projection screen is assembled with several parts and then hooked to the screen. The frame needs to be screwed to fix it, which is not beautiful, and the curtain and the frame are separated and not easy to carry

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