Piezoelectric Vibrator Resin Layer for Camera Lens Water Removal
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Solution Overview
Problem
Existing camera systems with piezoelectric or ultrasonic water-droplet removal mechanisms face issues with large vibrations leading to stress and potential cracking of the vibrators, which can result in malfunction, especially when dealing with substances other than water.
Innovation Solution
A vibrating device with a tubular body and a piezoelectric vibrator, where a bent portion and connecting portion are integrated to reduce the load on the vibrator, allowing for efficient removal of water droplets or other substances from camera lenses or covers without excessive stress, using a breathing vibration mode that converts to bending vibration, and a support structure to enhance displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a piezoelectric ceramic vibrator or ultrasonic transducer is used to generate large vibrations to remove water droplets and other substances, then the water droplet removal effectiveness is improved, but the vibrator receives large stress and cracks may be formed leading to malfunction
Solution Approach 1:
A resin layer is introduced as an intermediary between the piezoelectric vibrator and the dome-shaped cover. This resin layer acts as a stress-absorbing medium that transmits vibrational energy to the cover while protecting the piezoelectric vibrator from direct mechanical stress and potential cracking, thereby maintaining both removal effectiveness and vibrator reliability
Solution Approach 2:
The invention changes the physical state and properties of the vibrational transmission system by using a viscoelastic resin layer instead of direct rigid coupling. This allows for energy dissipation and stress distribution, reducing peak stresses on the piezoelectric vibrator while maintaining effective vibration transmission to the cover for water droplet removal
2Adaptability or versatility
If a large vibration is generated to remove various substances including water droplets, solutions, and colloidal solutions, then the removal capability is improved, but the piezoelectric vibrator or ultrasonic transducer is required to generate large vibration which leads to large stress and potential cracking
Solution Approach 1:
The resin layer serves as a protective intermediary that enables the piezoelectric vibrator to generate necessary vibrations for removing various substances (water droplets, solutions, colloidal solutions) without directly承受 the full mechanical stress, thus preserving vibrator structural integrity while maintaining versatile removal capability
Solution Approach 2:
The resin layer provides beforehand cushioning by being pre-positioned between the piezoelectric vibrator and the dome-shaped cover. This cushioning layer is designed to absorb and distribute stresses before they can cause cracking in the piezoelectric vibrator, enabling sustained operation for removing various substances
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 removes water droplets and other substances from camera lenses or covers without placing a large load on the piezoelectric vibrator, reducing the risk of malfunction and extending the device's lifespan.
Implementation Method 1
a piezoelectric vibrator provided on a first end surface of the tubular body
Implementation Method 2
The piezoelectric ceramic vibrator is vibrated to vibrate the cylindrical portion and the dome-shaped cover, thus removing water droplets that have adhered to the surface of the dome-shaped cover
Data Source
AI summary
A vibrating device includes a tubular body including first and second end surfaces, and a side wall portion that connects the first and second end surfaces, a piezoelectric vibrator provided on the first end surface of the tubular body, and a light transmitting body that is directly or indirectly connected to the second end surface and covers an opening in the second end surface of the tubular body. A connecting portion is connected to the first end surface of the tubular body inside or outside an opening in the first end surface. A tubular bent portion is connected to a surface of the connecting portion that faces toward the second end surface of the tubular body. The tubular bent portion extends in a direction from the first end surface toward the second end surface of the tubular body.