Projector Position Adjustment Unit Single-Axis Dial Design
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Solution Overview
Problem
Conventional projectors require complex gear systems for dual-axis adjustment of the projection lens, increasing the volume and complexity of the position adjustment unit, making it difficult to achieve a compact and symmetric design.
Innovation Solution
A projector design that utilizes a single-axis rotation mechanism for the adjustment dial, incorporating a gear module and guide slots/projections to facilitate movement in both vertical and horizontal directions, reducing the number of gears and allowing for a central dial placement, thereby simplifying the position adjustment unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dial that rotates around at least two axes is used for vertical and horizontal adjustments, then the position adjustment function is achieved, but the volume of the position adjustment unit increases and the structure becomes complex
Solution Approach 1:
The patent combines vertical and horizontal adjustment functions into a single dial that rotates around one axis. The dial includes a first dial for vertical adjustment and a second dial arranged on the circumference of the first dial for horizontal adjustment, both operable from a single rotational axis location.
Solution Approach 2:
The second dial is arranged on the circumference of the first dial in a ring shape, creating a nested configuration where one dial is positioned on the perimeter of the other, allowing both adjustment functions to be integrated in a compact arrangement.
2Ease of operation
If gears are connected complexly to enable dual-axis dial rotation, then the position adjustment function is achieved, but the device complexity increases
Solution Approach 1:
The patent merges the gear systems for vertical and horizontal adjustments into a shared single-axis rotation mechanism. A first gear module connects the first dial to the projection lens module for vertical adjustment, while a second gear module connects the second dial to the projection lens module for horizontal adjustment, both operating from the same rotational axis.
Solution Approach 2:
The single rotational axis serves dual purposes by controlling both the first dial for vertical adjustment and the second dial for horizontal adjustment, making the rotation mechanism universal for both adjustment directions.
3Volume of stationary object
If a single-axis rotation mechanism is used for the adjustment dial, then the volume of the position adjustment unit is reduced and structure is simplified, but the ability to adjust in both vertical and horizontal directions must be achieved through innovative mechanism design
Solution Approach 1:
The adjustment dial is segmented into two independent dials: the first dial for vertical adjustment and the second dial for horizontal adjustment. Each dial has its own gear module (first gear module and second gear module respectively) that independently controls the projection lens module in its respective direction, allowing both adjustment capabilities to coexist in a compact single-axis design.
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
This design reduces the volume of the position adjustment unit, lowers complexity, and enhances product quality and price competitiveness by enabling a compact, symmetric, and efficient two-directional adjustment with a single rotation axis.
Implementation Method 1
a first movement bracket including a helix groove engaging with a helix of the screw may move in the first direction
Implementation Method 2
a gear module moving the second movement bracket in the second direction on rotation of the second dial
Data Source
AI summary
The present invention relates to a projector comprising: a housing; a projection part for projecting an image; a projection lens module for expanding and projecting, on an outside screen, the image projected from the projection part; and a position adjustment part for controlling the positions of a first direction and a second direction of the projection lens module. The position adjustment part comprises: a first fixed bracket fixed to the housing and comprising an opening part through which a projection lens passes; a first moving bracket positioned on one surface of the fixed bracket and enclosing the circumference of the projection lens; a second moving bracket positioned on one surface of the first moving bracket and enclosing the circumference of the projection lens; a screw coupled to the first moving bracket in the first direction; a first dial exposed to the outer side by being coupled to the end part of the screw; a second dial positioned in a ring-shape on the circumference of the first dial; and a gear module for moving the second moving bracket in the second direction when the second dial rotates.