Portable self-supporting manual-lifting screen

Abstract

The invention discloses a portable self-standing manual lifting screen which is belong to the field of a screen device or apparatus used for projection or watching. The portable self-standing manual lifting screen consists of a shell, a foldable telescoping mechanism, a screen, an upper pull rod and a drum part, one end of the screen is connected with the upper pull rod, the other end is coiled by the elastic force of the drum and is arranged on the drum; one end of the foldable telescoping mechanism supports the upper pull rod in the manner of axle suspension, and the other end is in pivot connection with a base part on the back side of the shell, an assist part are arranged on the foldable telescoping mechanism, a protection part of the foldable telescoping mechanism is arranged on the back side of the shell along the length direction of the shell, the foldable telescoping mechanism is pronated on the back side on the shell and parallel with the length direction of the shell, a hinge connection part for an upper bar and a lower bar of a left arm and a right arm of the foldable telescoping mechanism is arranged in the protection part, a handle arranged on the central part of the upper pull rod is a clamping part, when being packed, a clamped part arranged on the central part of the shell is clamped by the clamping part to form a transportable screen device. The portable self-standing manual lifting screen has simple structure, convenient use, being capable of meeting the unfold height of the screen, small volume and being convenient for carrying.

Description

technical field [0001] The invention relates to a portable self-supporting manual lifting screen, which belongs to the field of screen devices or equipment for projection or viewing, and in particular relates to a portable self-standing manual lifting screen. Background technique [0002] Chinese patent application CN03811687.1 discloses a self-supporting manual lifting screen, which consists of the following components, including a housing, a folding telescopic mechanism, a screen, an upper pull rod, a reel and the like. One end of the screen is connected to the pull-up rod, and the other end is curled and installed on the roll by the elastic force of the roll. The roll used for curling the screen is installed in the housing when the curling force is applied. One end of the folding telescopic mechanism supports the pull-up rod , and the other end is pivotally connected with the housing base part. The booster part is installed on the folding telescopic mechanism, which can ...

AI Technical Summary

Problems solved by technology

However, because the folding telescopic mechanism is larger than the telescopic pillar and has a complex structure, the folding telescopic mechanism is easily damaged when exposed, especially when it is carried, the two ends of the folding telescopic mechanism are easy to be damaged and other items are attached, so they are all installed in the casing. But this also increases the size of the lifting screen, which is not easy to carry

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