Rotating Magnet Shutter Assembly for Compact High-Speed Operation
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Solution Overview
Problem
Existing shutter assemblies face challenges in high-speed operation due to space limitations and the need for precise mechanical linkages, which can increase thickness and complicate component substitution, especially when using electromagnetic forces for opening and closing.
Innovation Solution
A shutter assembly design featuring a base with a central aperture, a rotating permanent magnet, and a shutter blade mounted on the magnet, where the magnet contacts a stop to limit rotation and impact for open and closed positions, allowing for compact and efficient high-speed operation without the need for separate solenoid layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a linear electric motor is used to open and close the shutter, then the shutter can operate at high speeds, but the mechanical linkage requires precise manufacturing and large dampening assemblies, increasing device complexity and thickness
Solution Approach 1:
The patent replaces the linear electric motor with a permanent magnet and solenoid assembly that uses electromagnetic forces directly to move the shutter blade, eliminating the need for complex mechanical linkages and dampening assemblies while maintaining high-speed operation capability
Solution Approach 2:
The patent extracts and removes the mechanical linkage components and dampening assemblies from the shutter system, retaining only the essential electromagnetic actuation mechanism and the shutter blade itself, thereby simplifying the overall device structure
2Force
If solenoids are situated in a separate tier layer above or below the permanent magnet, then electromagnetic forces can be applied, but the overall thickness of the shutter assembly increases
Solution Approach 1:
The patent merges the solenoid and permanent magnet into a compact integrated assembly where the solenoid is positioned immediately adjacent to the permanent magnet, eliminating the need for separate tier layers and significantly reducing the overall thickness of the shutter assembly while maintaining effective electromagnetic force application
Solution Approach 2:
The patent repositions the solenoid from a vertical stacking arrangement (above or below the magnet in separate tiers) to a horizontal adjacent arrangement, changing the spatial dimension of component layout to reduce thickness while maintaining electromagnetic actuation effectiveness
3Ease of operation
If components are placed near the shutter opening, then the shutter can be actuated, but the components must have a low profile to avoid interfering with the cone angle of light, limiting component size and placement options
Solution Approach 1:
The patent replaces bulky mechanical actuation components with a compact electromagnetic assembly that can be positioned close to the shutter opening without interfering with the light cone, using magnetic fields instead of mechanical linkages to achieve actuation in limited space
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 design enables compact, high-speed shutter operation with reduced thickness and complexity, maintaining precise control and minimizing mechanical linkage requirements, while allowing for flexible shutter size adjustments within the same base structure.
Implementation Method 1
such assemblies may include a permanent magnet disposed on a drive ring and a pair of spaced solenoids disposed above the permanent magnet. A polarity of an operative end of the first solenoid can be opposite that of an operative end of the second solenoid, such that the permanent magnet is attracted to one of the solenoids and repelled by the other.
Data Source
AI summary
A shutter assembly includes a base having a stop and a central aperture, a permanent magnet rotatably mounted on the base, and a shutter blade directly mounted on the magnet and configured to move between an open position exposing the aperture and a closed position blocking the aperture. The magnet contacts the stop in the open and closed positions.