Wall-Hung Bracket Lead Screw Adjustment Mechanism
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Solution Overview
Problem
Existing wall-hung brackets for projection screens have low precision in height adjustment, making it difficult to align the screen perfectly with the projection picture, as they rely on step adjustment methods that are not precise enough.
Innovation Solution
A wall-hung bracket system featuring a guide rail, slider, and lead screw with a threaded connection, allowing for continuous vertical adjustment of the projection screen, enabling precise alignment with the projection picture and self-locking mechanism for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If step adjustment method using adjustment holes and screws is used, then the structure is simple and easy to manufacture, but the adjustment precision is low and cannot align the projection screen perfectly with the projection picture
Solution Approach 1:
The patent replaces the traditional mechanical step-adjustment system (adjustment holes and screws) with a lead screw mechanism that enables continuous stepless adjustment. The lead screw converts rotational motion into linear motion, allowing the projection screen to be positioned at any height within the adjustment range, thereby achieving high precision alignment while maintaining mechanical simplicity.
Solution Approach 2:
The patent changes the adjustment parameter from discrete step positions (defined by adjustment holes) to continuous position variation. By using a lead screw with threads, the system allows the slider to move continuously along the guide rail, transforming the adjustment from a limited set of fixed positions to an infinite range of possible positions, thus achieving precise alignment.
2Productivity
If traditional adjustment method is used, then the installation is simple, but the adjustment time and labor cost are high due to repeated trial and error
Solution Approach 1:
The patent replaces the inefficient trial-and-error adjustment process with a lead screw mechanism that enables precise, controlled movement. The operator can directly achieve the desired position through rotational adjustment of the lead screw, eliminating the need for repeated installation and adjustment, thereby significantly reducing time loss and improving productivity.
Solution Approach 2:
The lead screw mechanism provides self-locking capability through its threaded structure, which automatically maintains the adjusted position without requiring additional locking mechanisms or repeated adjustments. This self-service feature ensures that once the desired position is achieved, it is held stable, reducing the need for further intervention and minimizing adjustment time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides stepless adjustment for precise alignment of the projection screen with the projection picture, reducing labor costs and time consumption in adjustments, and ensuring the screen remains accurately positioned.
Implementation Method 1
The lead screw is provided with threads, and the lead screw is in threaded connection to the slider. When the lead screw rotates on its longitudinal axis, the slider slides in the vertical direction along the guide rail driven by the lead screw.
Data Source
AI summary
A wall-hung bracket for a projection screen is provided, including a guide rail, a slider and a lead screw. The guide rail is configured for being fixed on a wall along a vertical direction. The slider is slidingly connected to the guide rail. The slider is configured for being connected to a rear surface of a projection screen. The lead screw is provided with threads, and the lead screw is in threaded connection to the slider. When the lead screw rotates on its longitudinal axis, the slider slides in the vertical direction along the guide rail driven by the lead screw.