Shutter Blade Cam Mechanism for Impact Reduction
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Solution Overview
Problem
Existing shutter apparatuses face challenges in stabilizing the blade unit after return running, leading to longer operation times and limitations in improving continuous capturing frame rates due to increased impact during return running.
Innovation Solution
A shutter apparatus incorporating a blade unit, a blade moving member, an urging member, and a blade cam member that contacts the blade moving member as it opens, allowing for controlled movement and reduced impact during return running, thereby stabilizing the blade unit and enhancing continuous capturing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the blade unit performs return running with the driving member released, then the operation time is reduced, but the impact during return running increases and stabilization time is extended
Solution Approach 1:
The blade cam member acts as an intermediary between the blade moving member and the blade unit. During return running, the blade cam member contacts the blade moving member to guide and control its movement, reducing the impact caused by the released driving member while maintaining the shortened operation time benefit.
2Productivity
If the blade unit performs return running with the driving member released, then the continuous capturing frame rate is improved, but the stabilization time after running completion is extended
Solution Approach 1:
The blade cam member serves as a mediator that controls the blade moving member during return running and upon completion. By contacting the blade moving member, it ensures smooth deceleration and stabilization, reducing the stabilization time after running completion while maintaining the improved continuous capturing frame rate.
3Speed
If the blade moving member is allowed to move freely during return running, then the operation speed is increased, but the impact and bounds increase
Solution Approach 1:
The blade cam member acts as an intermediary that contacts the blade moving member during return running. It provides controlled guidance that maintains high operation speed while preventing excessive bounds and impact by regulating the movement of the blade moving member throughout the return running process.
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 solution effectively stabilizes the blade unit after return running, reducing operational time and improving continuous capturing frame rates by minimizing the impact of return running, thus enhancing the overall performance of the shutter apparatus.
Implementation Method 1
an urging member configured to urge at least one of the blade unit and the blade moving member in a direction from the closed position to the open position of the opening
Implementation Method 2
a blade cam member configured to contact the blade moving member as the blade unit moves from the closed position to the open position of the opening
Data Source
AI summary
A shutter apparatus includes a blade unit configured to open and close an opening used for exposure, a blade moving member configured to move the blade unit between an open position and a closed position of the opening, an urging member configured to urge at least one of the blade unit and the blade moving member in a direction from the closed position to the open position of the opening; and a blade cam member configured to contact the blade moving member as the blade unit moves from the closed position to the open position of the opening.