An anti-alteration support mechanism for projection equipment screen

Abstract

The invention provides an anti-alteration support mechanism for projection equipment curtains, which includes a lifting fixed rod and an upper hook; The bottom is slidably connected to the top of the support rod; a pull-down cavity is provided inside the support rod, and a sliding hole is respectively opened at the front and rear ends of the support rod, and the slide holes communicate with the inside of the pull-down cavity; the inside of the pull-down block is slidably connected to Inside the two sliding holes, and the left and right ends of the pull-down block are both hollow structures; the tension spring is located inside the support rod; there are four bolts in total, and the four bolts are respectively slidably connected to the two pull-down fixing rods and the two lift-up fixing rods. Inside the rod; it is beneficial to pull down the curtain installed on the mechanism, keeping the curtain tight, which is convenient for personnel to perform projection operations, and avoids the influence of air disturbance on the curtain, causing the bottom to swing back and forth, affecting the projection effect.

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. A pulley is installed on the fixed frame, and a hook is installed on the pulley. A take-up shaft is installed through a bracket at the lower position of one side of the support frame, and a telescopic rod is installed on the bottom of the support frame. The telescopic rod The bottom end is equipped with support legs through hinges. The curtain of the present invention is installed...

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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