Eccentric Slider Shutter Mechanism for Fast Response
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Solution Overview
Problem
Conventional shutter devices in camera-embedded mobile devices face challenges due to increased parts and complexity, leading to high power consumption, slow response speed, and reduced image quality, as well as the need for a restoring mechanism to maintain the shutter in a closed position without power supply.
Innovation Solution
A shutter device with a simple power transfer structure using a slider and magnet unit with eccentric positioning, a stator, and a yoke member to inhibit magnetic flux leakage, allowing for efficient rotation of blades and a restoring mechanism to maintain the shutter in a closed position without power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional shutter device uses multiple gears and complicated link structure to drive the shutter, then the shutter can be operated, but the response speed becomes slow and the device complexity increases
Solution Approach 1:
The patent removes unnecessary intermediate transmission components (gears and link structures) from the conventional shutter mechanism, directly coupling the driving force from the coil and magnet assembly to the shutter blades. This extraction of redundant elements simplifies the transmission path and enables faster shutter response.
Solution Approach 2:
The patent replaces the conventional mechanical gear-based transmission system with a direct electromagnetic actuation system. The coil and magnet assembly generates electromagnetic force that directly drives the shutter blades without requiring mechanical gear trains, thereby reducing complexity and improving response speed.
2Use of energy by moving object
If a conventional shutter device uses multiple parts and complicated structure, then the shutter can function, but the installation space increases and power consumption increases
Solution Approach 1:
The patent combines multiple functional components into an integrated assembly where the coil, magnet, and shutter blade form a unified structure. This merging eliminates the need for separate transmission mechanisms and reduces the total number of parts, thereby reducing both installation space and power loss in power transfer.
Solution Approach 2:
The shutter mechanism is designed to be self-driven through electromagnetic force generation within the integrated assembly. The coil and magnet directly generate the force needed to move the shutter blades without requiring external transmission components, reducing power loss and simplifying the structure.
3Loss of energy
If a conventional shutter device uses complicated link structure with multiple gears, then the shutter can be driven, but the power transfer loss increases
Solution Approach 1:
The patent extracts and removes the intermediate gear transmission elements from the power transfer path. By eliminating these intermediate mechanical components, the design achieves direct power transfer from the electromagnetic actuator to the shutter blades, minimizing power transfer loss.
4Reliability
If a shutter device needs a restoring unit to maintain closed position without power, then reliability is improved, but device complexity increases
Solution Approach 1:
The restoring unit is designed to automatically return the shutter blades to the closed position using elastic restoration or gravitational force when power is not supplied. This self-service mechanism maintains reliability by ensuring the shutter can be reliably closed without active power input, while the integrated design minimizes added complexity.
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 configuration reduces installation space and power consumption, improves response speed, and enhances control responsiveness while ensuring the shutter remains closed without power, addressing the limitations of conventional devices.
Implementation Method 1
a stator linearly shifting the slider by providing an electromagnetic force to the magnet unit
Implementation Method 2
a yoke member to inhibit magnetic flux leakage
Implementation Method 3
a slider and magnet unit with eccentric positioning, allowing for efficient rotation of blades
Data Source
AI summary
A shutter device is disclosed, the device including a base formed with a lens hole through which reflective light from an object passes, a first blade and a second blade rotating about a hinge provided at the base to open or close the lens hole, and an actuator provided with a linearly-shifting slider at an area eccentrically positioned from the hinge to allow the first and second blades to be activated with rotation moment.