Blade Drive Regulating Member for Speed Variation
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Solution Overview
Problem
Existing blade drive devices for optical apparatuses, such as digital cameras, do not effectively suppress variations in blade movement speed during continuous operation, leading to longer operation intervals.
Innovation Solution
Incorporating a regulating member with an inclined abutting surface on the blade drive device to stabilize the initial positions and sliding resistance of blades, ensuring consistent movement speed by guiding the blades to contact each other at prescribed positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no regulating member is provided for blades, then the device structure is simple, but variations in blade movement speed occur during continuous operation
Solution Approach 1:
A regulating member is introduced as an intermediary component between the blades and the drive mechanism. This regulating member includes a regulating surface that contacts the blades during housing, ensuring they return to consistent initial positions. The regulating member mediates the interaction between blades, providing controlled contact and stable sliding resistance without requiring complex active control systems.
2Productivity
If the operation interval of blades is shortened to improve frame speed, then productivity increases, but variations in blade movement speed become more significant
Solution Approach 1:
The regulating member performs preliminary action by ensuring blades are properly positioned and contacted before each expansion operation. The inclined regulating surface guides blades to contact each other at prescribed positions during housing, pre-establishing consistent initial conditions for the next operation cycle. This preliminary positioning action ensures reliable performance even at shortened operation intervals and high frame speeds.
3Manufacturing precision
If blades are housed without regulation, then the housing process is fast, but initial positions of blades vary in each operation
Solution Approach 1:
The regulating member enables blades to self-regulate their positions through mutual contact on the inclined regulating surface. As blades are housed, they naturally contact each other and the regulating surface, which guides them to prescribed positions without requiring external positioning mechanisms. This self-service approach achieves precise initial positioning while maintaining fast housing operation.
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 allows for the stabilization of blade movement speed and reduction in operation intervals, enhancing the performance of optical apparatuses by achieving higher frame speeds with reduced variations in blade movement.
Implementation Method 1
the blades abutting on the inclined surface move toward the bed plate side
Implementation Method 2
sliding resistance in respective blades which contact one another occurring when the blades are expanded and moved can be stabilized
Data Source
AI summary
To provide a blade drive device capable of suppressing variations in movement speed of blades at the time of continuous operation and shortening the operation interval of blades. A blade drive device 10 includes a bed plate 11 having an opening 12, a blade receiving plate 15 arranged so as to face the bed plate 11, a plurality of blades 31b to 34b provided between the bed plate 11 and the blade receiving plate 15, which are expanded in a state where the opening 12 is closed and are housed while overlapping one another in a state where the opening 12 is opened and a regulating member 80 having an abutting surface 82 on which side edge portions 31b1 to 34b1 of the blades 31b to 34b abut when the blades are housed. The abutting surface 82 is an inclined surface 83 inclined to the bed plate 11 side as it goes from the bed plate 11 side to the blade receiving plate 15 side.