Parallelogram Linkage Holder for Lens Positioning
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Solution Overview
Problem
Existing mechanical holders for optical elements like lenses are complex, bulky, and require precise coordination, making them unsuitable for applications with limited installation space, as they often cannot be adjusted finely enough to accommodate varying positions effectively.
Innovation Solution
An adjustable mechanical holder with a stationary fastening region and a holding region connected by a parallelogram linkage, utilizing movable actuators to allow for precise adjustments along multiple spatial directions, enabling compact and easy handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional actuators with supports and tensioning elements are used, then the holder can achieve positioning function, but the device becomes complicated and bulky
Solution Approach 1:
The patent extracts and eliminates the tensioning element (spring) from the traditional actuator design. The actuator consists only of a support and a lever arm, removing the complex coordination between multiple components while maintaining the positioning function through the parallelogram linkage mechanism.
Solution Approach 2:
The holder is segmented into distinct functional modules: stationary fastening region, movable holding region, parallelogram linkage for position control, and actuators for orientation control. This segmentation allows each component to perform its specific function independently, reducing overall complexity.
2Ease of operation
If traditional actuators with multiple coordinated parts are used, then positioning can be achieved, but the holder becomes too large for limited installation spaces
Solution Approach 1:
The patent merges the positioning and orientation functions into a compact integrated structure. The parallelogram linkage combines position control through its geometric mechanism with orientation control through the lever arm actuators, eliminating the need for separate positioning and orientation mechanisms that would increase volume.
Solution Approach 2:
The holder utilizes dynamic geometric transformation through the parallelogram linkage mechanism. The holding region can dynamically adjust its position and orientation coordinates (x, y, z, α, β, γ) through the coordinated movement of the linkage and actuators, enabling full six-degree-of-freedom control within a compact volume.
3Manufacturing precision
If precise coordination of built-in parts is required, then positioning accuracy can be achieved, but the holder becomes complicated and difficult to manufacture
Solution Approach 1:
The parallelogram linkage mechanism provides self-aligning properties that automatically maintain geometric relationships between components during movement. The linkage structure itself ensures the holding region moves in a controlled manner without requiring complex external coordination systems, reducing manufacturing and assembly complexity.
4Volume of moving object
If a compact design is implemented, then installation space is reduced, but the holder may lack sufficient adjustment range
Solution Approach 1:
The patent achieves six-degree-of-freedom positioning capability within a compact structure by utilizing multiple spatial dimensions. The parallelogram linkage provides position control in three translational dimensions (x, y, z) while the lever arm actuators provide orientation control in three rotational dimensions (α, β, γ), maximizing adjustment range within minimal volume.
Data Source
AI summary
An adjustable mechanical holder for finely adjusting a position of an element attachable or attached to the mechanical holder includes a stationary fastening region configured to fasten the mechanical holder to a holding structure and a holding region configured as a mounting for the element. At least a first parallelogram linkage is disposed between the holding region and the fastening region. The first parallelogram linkage connects the holding region movably to the fastening region. The mechanical holder further includes a first movable actuator, by which the holding region is movable by the first parallelogram linkage along a first spatial direction.