Camera Fan Mount Structure for Microphone Vibration Isolation
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Solution Overview
Problem
Vibration of the fan in an image pickup apparatus propagates to attached components, amplifying noise and degrading recording quality due to the fan's drive and vibration noise being recorded by the microphone.
Innovation Solution
An image pickup apparatus with a fan is designed to include an elastic member that contacts the fan and a first component fixing the fan without contacting the sound pickup unit, using ventilation sheets and elastic members to attenuate vibration and separate the fan from noise-sensitive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fan is press-fitted and supported by the antivibration fan cover in multiple directions for reliable fixation, then the fixation reliability is improved, but the device size increases
Solution Approach 1:
The invention extracts the essential function of vibration isolation by using only a single antivibration fan cover in the rotation axis direction, removing the need for covers in all six directions. This selective approach maintains reliable fixation while reducing the overall device size.
Solution Approach 2:
Instead of supporting the fan cover in all six directions (conventional approach), the invention inverts the approach by providing support only in the rotation axis direction. The fan frame itself provides support in other directions, achieving reliable fixation with minimal components.
2Object-affected harmful factors
If the fan is press-fitted against the attachment bracket through the antivibration fan cover, then the vibration noise transfer is reduced, but the vibration due to fan drive still propagates to the attachment bracket
Solution Approach 1:
The elastic member serves as an intermediary between the fan and the fan frame, providing vibration isolation. This mediator absorbs vibration energy while maintaining the necessary mechanical connection, preventing both noise transfer and vibration propagation to the attachment bracket.
Solution Approach 2:
The invention uses a composite structure combining the elastic member (vibration isolation material) with the fan frame and fan cover. This composite approach leverages the vibration-damping properties of the elastic material to simultaneously address both noise transfer and vibration propagation issues.
3Stability of the object's composition
If the antivibration fan cover is provided for all six surfaces of the frame for reliable fixation, then the fixation stability is improved, but the device complexity increases
Solution Approach 1:
The fan frame serves multiple functions: it provides structural support, acts as a mounting surface for the fan, and provides fixation in directions where separate covers would be needed. This multi-functionality reduces the number of components while maintaining fixation stability.
Solution Approach 2:
The invention merges the functions of multiple separate fixation components into a single integrated fan frame structure. By combining the support functions across all six directions into one component, the design achieves fixation stability with reduced 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
The design effectively reduces the propagation of vibration noise to the sound pickup unit, maintaining recording quality while minimizing the device's size by supporting the fan with elastic members and ventilation sheets, thus reducing noise interference.
Implementation Method 1
an elastic member that contacts the fan
Data Source
AI summary
An image pickup apparatus includes a sound pickup unit configured to pick up sound during moving image capturing, a fan, an elastic member provided in contact with the fan, and a first component that fixes the fan through the elastic member. The first component does not contact the sound pickup unit.