A projection screen lifting mechanism

CN224383586UActive Publication Date: 2026-06-19WUXI LEXIN AV EQUIP

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: WUXI LEXIN AV EQUIP
Filing Date: 2025-07-26
Publication Date: 2026-06-19

AI Technical Summary

Technical Problem

Existing projection screen lifting mechanisms are prone to shaking, trembling, and slapping due to external factors when unfolding, and the flatness of the unfolded screen is not good, which affects the projection effect and service life.

Method used

The design employs a combination of rotating components, tension adjustment components, and limiting components. A reciprocating stepper motor drives the take-up roller, which, combined with a counterweight and a sliding groove structure, dynamically adjusts the tension of the projection screen to ensure smooth unfolding and stability.

Benefits of technology

It effectively suppresses the shaking, trembling and slapping of the projection screen, improves the flatness and stability after unfolding, and enhances the user experience and device lifespan.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN224383586U_ABST

Patent Text Reader

Abstract

This utility model belongs to the field of projection screen technology, specifically relating to a projection screen lifting mechanism. It includes a top box, inside which is a rotating component with a take-up roller. The projection screen body is mounted on the take-up roller. A first sliding groove is formed on the inner wall of the top box, and a tension adjusting component is installed inside the first sliding groove. Support frames are provided on both sides of the bottom of the top box, and a second sliding groove is provided on the side of the two support frames that are close to each other. A limit component is installed inside the second sliding groove, and a counterweight connected to the bottom of the projection screen body is installed on the limit component. The rotating component includes a reciprocating stepper motor mounted on the top box, and the output end of the reciprocating stepper motor is connected to the take-up roller. This device can dynamically absorb or compensate for instantaneous tension changes in the projection screen body during unfolding and stabilization, effectively suppressing violent shaking, jittering, and slapping phenomena of the projection screen body, and significantly improving the flatness and stability of the projection screen body after unfolding.

Need to check novelty before this filing date? Find Prior Art