Linkage Assembly for Straight-Line Motion With Deployable Support
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Solution Overview
Problem
There is a need for an improved assembly that can convert rotational motion into a straight line motion, particularly for applications where a component needs to move in a straight line in response to rotational motion, and the assembly should be compact and capable of deploying a supporting member as it moves from a retracted to an extended position.
Innovation Solution
The assembly comprises a first arm rotatable about a first fixed pivot, a second arm rotatable about a second fixed pivot, a third arm pivotably connected to the second arm, and connecting arms that allow the third arm to move in a straight line when the first and second arms rotate, with a support arm that can be deployed as the assembly extends, enabling the assembly to be compact and versatile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional straight line mechanisms (e.g., Watt linkage, Peaucellier-Lipkin inversor) are used to convert rotational motion into straight line motion, then the conversion function is achieved, but the device complexity and number of components increase
Solution Approach 1:
The mechanism is divided into functional modules: a rotating member (first component) and a translating member (second component) connected through a optimized linkage system. This segmentation allows each component to perform its specific function efficiently, reducing overall complexity while maintaining motion conversion accuracy.
Solution Approach 2:
The linkage mechanism is designed to serve multiple purposes: converting rotational motion to linear motion, providing structural support, and enabling compact configuration. The same components achieve both motion conversion and structural integrity, reducing the need for additional separate elements.
2Volume of moving object
If the assembly is designed to be compact, then space efficiency is improved, but the range of motion and extension capability are limited
Solution Approach 1:
The mechanism employs a nested configuration where the translating member moves along the rotating member in a compact arrangement. The components are arranged to minimize the assembly's footprint when retracted, while still allowing for significant extension range when deployed, effectively packing the motion range within a small volume.
3Length of moving object
If the assembly extends from retracted to extended position, then the working range is increased, but structural stability may be compromised
Solution Approach 1:
The support member is pre-configured and automatically deployed as the assembly transitions from retracted to extended position. This preliminary preparation ensures that stability support is in place before full extension is achieved, maintaining structural integrity throughout the motion range without requiring additional active stabilization mechanisms.
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 assembly effectively converts rotational motion into a straight line motion with high accuracy and compactness, allowing for efficient movement of components in a straight line, and the support arm provides additional stability and support as the assembly extends, enhancing its versatility and range of applications.
Implementation Method 1
a first arm rotatable at a first position thereon about a first fixed pivot; a second arm rotatable at a first position thereon about a second fixed pivot... a third arm pivotably connected at a first position thereon to the second arm
Data Source
AI summary
An assembly for converting motion comprises a first arm rotatable about a first fixed pivot; a second arm rotatable about a second fixed pivot; a third arm pivotably connected to a second position on the second arm; a first connecting arm extending between the first and third arms; a second connecting arm extending between the first and second arms; a support arm extending from the connection between the second and third arms, the support arm linked to the connection between the first arm and the first connecting arm, wherein one of the connection between the second and third arms and the connection between the first arm and the first connecting arm is moveable relative to the support arm and the other of the connection between the second and third arms and the connection between the first arm and the first connecting arm is fixed relative to the support arm.