Projector Stand Wheel Base and 3-Axis Alignment for Easy Positioning
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Solution Overview
Problem
Existing projector stands that support ultra-short throw projectors are cumbersome to attach and detach from tables due to clamping mechanisms, making them difficult to move and adjust.
Innovation Solution
A movable projector stand with a rotatable wheel base, adjustable elevator mechanism, and three-axis angular adjustment mechanism, allowing for easy positioning and height adjustment of the projector without the need for attachment and detachment work, featuring a base member with wheels, a strut with a gas spring elevator, and a three-axis adjustment mechanism for precise optical axis alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clamping mechanism is used to attach the projector stand to the table, then the stand is securely fixed, but the work associated with attaching and detaching the stand becomes cumbersome
Solution Approach 1:
The patent removes the clamping mechanism entirely from the projector stand design. Instead of using a clamping structure to attach to the table edge, the stand uses a movable base with wheels that can be freely positioned and stopped at desired locations, eliminating the cumbersome attachment and detachment operations while maintaining stable support during use
Solution Approach 2:
The patent transitions from a static clamped position to a dynamic movable base system. The base member includes wheels for easy movement and a stopping mechanism that allows flexible positioning without permanent attachment, enabling the stand to adapt to different locations and table configurations without complex attachment procedures
2Ease of operation
If the projector stand is made movable with wheels, then the stand can be easily moved to different locations, but the stability during projection may be compromised
Solution Approach 1:
The base member incorporates both wheels for mobility and a stopping mechanism for stability during projection. The stopping mechanism engages with the table surface or edge to prevent unwanted movement while maintaining the ability to easily relocate the stand when needed, achieving a balance between mobility and projection stability
Solution Approach 2:
The stand is divided into movable base and stable support structure components. The base with wheels provides mobility, while the strut and elevator mechanism provide stable, rigid support for the projector once positioned, separating the mobility function from the stability function
3Device complexity
If a fixed height stand is used, then the structure is simple, but the height cannot be adjusted to match different projected body heights
Solution Approach 1:
The patent replaces the fixed height structure with a height-adjustable elevator mechanism. The elevator member can be raised and lowered along the strut to match different projected body heights, transforming the static structure into a dynamic, adaptable system that maintains versatility while preserving structural simplicity through standardized components
Solution Approach 2:
The elevator mechanism provides multi-functionality by enabling the stand to accommodate various projected body heights and configurations. This single adjustable mechanism serves multiple purposes: height adjustment, adaptation to different tables, and flexibility for various projection scenarios, replacing the need for multiple fixed-height stands
4Measurement precision
If an angular adjustment mechanism is added, then the optical axis can be precisely aligned, but the device complexity increases
Solution Approach 1:
The angular adjustment is segmented into discrete, manageable axes (typically two axes for horizontal and vertical adjustment). Each axis is adjusted independently through simple rotational mechanisms, breaking down the complex task of optical alignment into sequential, straightforward steps that reduce overall system complexity while maintaining precision
Solution Approach 2:
The angular adjustment mechanism introduces controlled dynamics to the otherwise static projector mounting. The ability to rotate and tilt the projector along adjustment axes provides precise optical axis alignment without requiring complex mechanical structures, using simple rotational joints and locking mechanisms that maintain stability when adjusted to the desired position
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
Enables easy movement and versatile positioning of the projector stand, allowing for effortless attachment and detachment, adjustable height, and precise optical axis alignment, reducing the complexity of setup and enhancing usability.
Implementation Method 1
an elevator mechanism that raises and lowers the elevator member
Data Source
AI summary
A projector stand includes an elevator member fitted to a strut such that the elevator member can be raised and lowered, a guide plate fixed to the upper end of the elevator member, a slide member horizontally movable along the guide plate, and a three-axis adjustment mechanism provided or the slide member.