Projector Elevation Feet Layout for Stable Inclined Positioning
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Solution Overview
Problem
Existing projectors become unstable when inclined due to greatly inclined feet, leading to positional instability during image projection.
Innovation Solution
A projector design featuring a first foot that can be freely projected and withdrawn, and a second foot with increased inclination away from the first foot, along with a semispherical and elastic contact portion, maintains stability by adjusting the angle of inclination and contact area regardless of the projector's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the first foot is projected to raise the downstream end of the external housing for producing large inclination, then the projector can project image light toward a screen at a high position, but the feet become greatly inclined with respect to the installation surface causing the projector position to become unstable
Solution Approach 1:
The second foot is designed with a specific inclination angle (30 degrees or more with respect to the bottom surface) to provide different functional characteristics compared to the first foot. This local differentiation in foot design allows one foot to enable inclination while the other maintains stability during inclined operation
Solution Approach 2:
The two feet are designed asymmetrically with different inclination angles relative to the bottom surface. The second foot has a larger inclination angle (30 degrees or more) compared to the first foot, creating an asymmetric configuration that optimizes stability during inclined projection while maintaining the ability to project toward high-position screens
2Stability of the object's composition
If the second foot is designed with inclination away from the first foot to maintain stability during inclined position, then stable position is achieved under inclination, but the design complexity increases
Solution Approach 1:
The inclination angle of the second foot is optimized to be 30 degrees or more with respect to the bottom surface, which is the critical parameter that enables stable inclined positioning. By precisely controlling this angular parameter, the patent achieves stability without requiring complex mechanical structures or additional components
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 design ensures a stable position both in flat and inclined conditions, preventing contact issues and maintaining balance through adjustable angles and elastic deformation.
Implementation Method 1
the contact portion has elasticity
Data Source
AI summary
A projector includes: an external housing which forms an external case, wherein a bottom surface of the external housing as a surface opposed to an installation surface on which the projector is installed has feet contacting the installation surface, the feet has a first foot freely projected toward the installation surface and withdrawn from the installation surface, and a second foot disposed away from the first foot and projected toward the installation surface, and the second foot is inclined in a direction away from the first foot in such a manner that the inclination of the second foot increases in the direction toward the installation surface.