Projector Lens Adjusting Device Manual Fixation Mechanism
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Solution Overview
Problem
Conventional lens adjusting devices in projectors require multiple complex components and motors to adjust and fix the lens position, leading to increased cost, weight, and space requirements, as well as an excessive burden on motor systems, especially when manual adjustments are needed.
Innovation Solution
A lens adjusting device with a frame, base, positioning structure, and locking device, where the lens is fixed using a screw, nut, and fixer mechanism, allowing for manual adjustment and fixation without the need for multiple motors, by utilizing a single locking device to secure the frame to the base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional lens adjusting device uses multiple frames and guiding rods to adjust lens position, then the lens position can be adjusted in horizontal and vertical directions, but the device complexity increases and weight increases
Solution Approach 1:
The patent merges the horizontal and vertical adjustment functions into a single integrated platform structure. The platform includes a horizontal moving portion and a vertical moving portion that work together as one unified mechanism rather than separate frames, reducing overall structural complexity while maintaining full position adjustment capability.
Solution Approach 2:
The adjustment mechanism is segmented into functional modules: a positioning structure with multiple positioning units, a locking device with independent locking units, and a platform with distinct horizontal and vertical moving portions. This modular segmentation allows each component to perform its specific function efficiently, reducing the need for excessive structural elements.
2Adaptability or versatility
If conventional lens adjusting device uses multiple frames and guiding rods, then lens position adjustment is achieved, but the device weight increases
Solution Approach 1:
Multiple separate structural components (horizontal frame, vertical frame, guiding rods) are merged into a single integrated platform structure. This consolidation eliminates redundant materials and reduces the overall weight of the stationary device while preserving the ability to adjust lens position in both horizontal and vertical directions.
3Extent of automation
If motor is used to drive gear group to adjust frames, then lens position can be adjusted automatically, but the motor burden increases when fixing lens position
Solution Approach 1:
The locking device is designed to automatically fix the lens position without requiring continuous motor operation. The locking units can engage and disengage independently to secure the platform at desired positions, allowing the motor to operate only during position transitions rather than continuously, thereby reducing energy consumption.
Solution Approach 2:
The system transitions from a static motor-driven gear mechanism to a dynamic system where the platform can be positioned and then independently locked. The locking units provide dynamic fixation capability, allowing the motor to stop at any position during adjustment and have the position maintained without continuous power input.
4Use of energy by moving object
If manual adjustment method is used, then motor burden is reduced, but the lens position cannot be fixed automatically
Solution Approach 1:
The locking device enables automatic fixation of the lens position through its self-contained locking units. When the platform reaches the desired position during manual adjustment, the locking units can engage to secure the position without requiring external motor assistance, providing automatic fixation capability while maintaining manual adjustability.
Data Source
AI summary
A lens adjusting device including a frame, a lens, a base, at least a positioning structure, and a locking device is provided. The lens is fixed on the frame. The base has a through hole with a predetermined shape formed thereon. The positioning structure is disposed on the base for movably positioning the frame on a plane above the base. The locking device including a screw, a nut, and a fixer is capable of fixing the frame to the base. The screw penetrates the frame and extends to below the base through the through hole of the base. The size of the through hole is greater than the size of a corresponding cross-section of the screw. The nut is disposed below the base and assembled to the screw to position the screw on the base. The fixer is disposed on the frame to constrain the rotation of the nut.