Abnormal motion preventing support mechanism for screen of projection equipment

Abstract

The invention provides an abnormal motion preventing support mechanism for a screen of projection equipment. The support mechanism comprises up-lifting fixing rods and upper hooks, a triangular supporting frame is mounted at the bottom of a supporting rod, the top of the supporting rod is in a hollow structure, and the bottom of a Y-shaped movable supporting rod is slidably connected into the topof the supporting rod. The supporting rod is internally provided with a down-pulling cavity, and front and rear ends of the supporting rod are provided with slide holes communicated with the interiorof the down-pulling cavity. A down-pulling block is internally and slidably connected into the two slide holes, and left and right ends of the down-pulling block are in hollow structures. A tension spring is positioned in the supporting rod, and four bolts are slidably connected into two down-pulling fixing rods and the two up-lifting fixing rods. The screen mounted on the mechanism can be pulleddownwards beneficially to keep the screen in a tightened state to make it convenient for personnel to perform projection, and influences on projection effects due to bottom longitudinal swinging of the screen under influences of air turbulence are avoided.

Description

technical field [0001] The invention belongs to the technical field of screen support mechanisms, and more specifically relates to an anti-alteration support mechanism for projection equipment screens. Background technique [0002] Projection screens are used in movies, offices, home theaters, and large conferences to display images and video files. [0003] Based on the above, the inventor found through searching that there are existing similar mechanisms, such as a multimedia projection screen mentioned in Patent Application No. 201721404364.1, which includes a support frame and a take-up reel, and a fixed frame is installed on the top of the support frame. A pulley is installed on the fixed frame, a hook is installed on the pulley, a take-up shaft is installed at the lower position of one side of the support frame through a bracket, and a telescopic rod is installed at the bottom of the support frame. The bottom end of the rod is hingedly mounted with supporting legs. T...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above technical problems, the present invention provides an anti-change support mechanism for the screen of projection equipment, to solve the problem that the existing similar screen support mechanism has a poor tightening and fixing effect on the screen, and the screen is easy to be affected by the external airflow when it is used for projection. Disturbance causes the bottom of the screen to shake back and forth, which affects the use effect of personnel; and the folding and shrinking effect is poor, and it is easy to occupy a large amount of space during later storage and transportation, causing inconvenience to transportation and storage

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