Cam Mechanism for Movable Wall Panel Deployment
Solution Overview
Problem
Existing movable wall systems face challenges in efficiently transitioning between stowed and deployed positions, particularly in managing panel weight distribution and alignment, which affects stability and operational efficiency.
Innovation Solution
The system employs a cam mechanism with a flexible lift member and a support rack to rotate and position panels, transferring weight between the cam and lift member, and using mating tongue and groove engagement for alignment, allowing panels to move between stowed and deployed positions while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If panels are moved directly between stowed and deployed positions without intermediate support, then the movement process is simplified, but the panel weight cannot be properly distributed and alignment cannot be maintained
Solution Approach 1:
The support rack is pre-positioned and biased to engage with the cam mechanism before panel movement begins. The cam is preliminarily positioned to receive panels from the support rack, ensuring that weight transfer and alignment occur in a controlled sequence rather than requiring direct movement between stowed and deployed positions.
Solution Approach 2:
The cam mechanism serves as an intermediary device between the support rack and the panels during deployment, and between the panels and the support rack during stowing. This intermediary allows for controlled weight transfer and precise alignment that would not be possible with direct movement, resolving the contradiction by adding a mediating element rather than simplifying the process.
2Manufacturing precision
If the cam mechanism directly supports panel weight during rotation, then alignment is maintained, but the force required to rotate the cam becomes excessive
Solution Approach 1:
The support rack is preliminarily engaged with the panels to bear their weight before the cam begins its rotating motion. This preliminary weight-bearing action by the support rack reduces the force the cam must exert during rotation, while the cam still maintains alignment through its guided rotation path and engagement geometry.
Solution Approach 2:
The system dynamically transitions weight bearing from the support rack to the cam and back again during the movement cycle. During cam rotation, the support rack bears panel weight to reduce rotational force requirements, while the cam maintains alignment through its dynamic engagement with the panels and support rack, allowing both alignment precision and reduced force to be achieved at different phases of the cycle.
3Productivity
If panels are lowered quickly during deployment, then the deployment time is reduced, but the panels may become misaligned or unstable during the lowering process
Solution Approach 1:
The cam mechanism acts as an intermediary that guides panel lowering, maintaining alignment and stability even at higher speeds. The cam's rotational motion and engagement geometry provide continuous control during the lowering process, allowing faster deployment while preventing misalignment that would occur with uncontrolled rapid lowering.
Solution Approach 2:
The support rack and cam are preliminarily positioned and biased to work in coordination during panel lowering. This preliminary coordination ensures that as panels are lowered more quickly, the support rack and cam work together to maintain alignment and stability throughout the process, rather than allowing instability to develop.
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 solution enables smooth and efficient movement of panels between stowed and deployed positions, ensuring stable alignment and weight distribution, thereby improving the operational efficiency and stability of the movable wall system.
Implementation Method 1
lowering the first panel in response to rotation of the cam... lowering the second panel in response to further rotation of the cam
Implementation Method 2
Supporting the first panel on a flexible lift member in response to lowering the first panel, so that the flexible lift member bears the first weight
Implementation Method 3
fixing the second panel to the first panel through a mating tongue and groove engagement
Data Source
AI summary
A method of moving panels from a stowed position to a deployed position includes supporting a first panel on a cam, rotating the cam in a first direction and lowering the first panel which separates the first panel from the cam and supports the first panel on a flexible lift member. Supporting a second panel on a support rack, biasing the second panel into engagement with the cam, rotating the cam in the first direction to transfer the second panel from the support rack to the cam. Further rotating the cam in the first direction, lowering the second panel to transfer the second panel from the cam to the first panel, so that the flexible lift member bears the weight of the first and second panels through the connection between the first panel and the flexible lift member. Fixing the first and second panels through a tongue and groove engagement.