Camera Shutter Braking Mechanism for Impact Reduction
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Solution Overview
Problem
Existing photographing apparatus shutters face damage due to high impact forces when the blade assembly closes the exposure opening, as a result of its rapid closing speed.
Innovation Solution
Incorporating a braking member, such as a braking ring, friction member, and biasing member, into the shutter mechanism to decelerate the shutter mechanism when the blade assembly closes the exposure opening, thereby reducing the impact force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the blade assembly operates at high closing speed to achieve fast shutter operation, then the exposure time control is improved, but the shutter mechanism is subjected to large impact force that may cause damage
Solution Approach 1:
The patent introduces a braking mechanism that applies braking force to the blade assembly during its closing motion, before the blades fully close. This pre-cushioning of the closing speed through controlled deceleration reduces the impact force on the shutter mechanism while maintaining the overall fast operation capability, thereby resolving the contradiction between speed and reliability
2Productivity
If the blade assembly closes rapidly to maintain short exposure time, then the productivity of the camera is improved, but the impact force on shutter components increases causing potential damage
Solution Approach 1:
The patent implements a dynamic braking system where the braking force is applied progressively during the blade closing process rather than as a sudden stop. This dynamic control allows the blade assembly to maintain high speed for most of the closing行程, preserving short exposure time, while gradually reducing speed near the end to minimize impact force on the shutter mechanism
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 braking member effectively reduces the impact force applied to the shutter mechanism when the exposure opening is closed, preventing damage and enhancing the reliability of the shutter mechanism.
Implementation Method 1
a braking member configured to generate a braking force when the blade assembly closes the exposure opening
Data Source
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AI summary
The present invention provides a shutter and a photographing apparatus, and pertains to the field of photographing apparatus technologies. The shutter and the photographing apparatus are intended to solve a problem that a shutter mechanism may be damaged by a large impact force when the shutter mechanism closes an exposure opening. The shutter includes: a shutter base including an exposure opening; a shutter mechanism including a blade assembly and a synchronizer ring for driving the blade assembly, the synchronizer ring being movable between a first position and a second position, and the exposure opening being open when the synchronizer ring is in the first position and closed when the synchronizer ring is in the second position; and a braking member for decelerating the shutter mechanism. In the shutter and the photographing apparatus according to the present invention, the shutter mechanism may be buffered when the blade assembly closes the exposure opening of a camera, so as to prevent the shutter mechanism from being damaged.