Silicon Rubber Wiper for Dome Camera Cleaning
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Solution Overview
Problem
Monitoring camera devices with plastic-made dome-shaped covers face damage from dust and water droplets, and existing solutions require complex structures with high-pressure fluid ejection systems.
Innovation Solution
A monitoring camera device with a silicon rubber wiper blade and wiper mechanism that rotates to clean the dome-shaped cover portion without damaging it, using a simple structure that includes a wiper arm and driving mechanism to remove dust and water drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a high-pressure fluid ejection system is used to clean the dome-shaped cover, then dust and water drops are removed effectively, but the structure becomes large in scale due to requiring a compressor and other components
Solution Approach 1:
The invention extracts the cleaning function from the complex high-pressure fluid ejection system and implements it through a simple wiper mechanism. The wiper blade, made of rubber or silicone material, is attached to a wiper arm that rotates to clean the dome surface, eliminating the need for compressors and high-pressure fluid systems.
Solution Approach 2:
The invention replaces the mechanical fluid ejection system with a direct mechanical wiper cleaning system. Instead of using high-pressure fluid to remove contaminants, the wiper blade mechanically contacts and wipes the dome surface, achieving cleaning through simple mechanical motion.
2Strength
If a conventional glass-made dome window is used, then the dome is more durable and less easily damaged, but the plastic-made dome window allows for better integration with housing and lighter weight
Solution Approach 1:
The invention changes the material parameter of the dome from glass to plastic, specifically using materials like acrylic or polycarbonate that offer better impact resistance and durability. This material substitution maintains the lightweight and integration advantages while significantly improving durability.
3Device complexity
If a wiper blade is used to clean the dome-shaped cover, then the structure is simplified, but the wiper blade may damage the plastic dome if not properly designed
Solution Approach 1:
The invention applies local quality by using rubber or silicone material specifically for the wiper blade, which has low friction coefficients and is gentle on the plastic dome surface. This material choice ensures that the cleaning action does not damage the dome while maintaining effective cleaning capability.
Solution Approach 2:
The invention changes the material properties of the wiper blade by using rubber or silicone, which have specific friction and elasticity characteristics that prevent damage to the plastic dome. These material parameter changes ensure reliable cleaning without compromising dome integrity.
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
Effectively cleans the dome-shaped cover portion without damaging it, using a silicon rubber wiper blade that reduces friction and maintains image quality, and allows for easy replacement and efficient operation.
Implementation Method 1
a silicon rubber wiper blade having an arc surface along a curved surface of the dome-shaped cover portion
Data Source
AI summary
A monitoring camera device is disclosed. The device includes a housing body in which at least a monitoring camera is built in, a transparent plastic-made semispherical dome-shaped cover portion provided on one surface of the housing body, a wiper mechanism rotatably provided on the housing body and which cleans the dome-shaped cover portion, and a wiper driving portion that reciprocatively rotates and drives the wiper mechanism. The wiper mechanism includes a silicon rubber-made wiper blade having an arc surface along a curved surface of the dome-shaped cover portion, and a wiper arm having both end portions rotatably provided around a central axis of the housing body, the central axis being parallel to a bottom surface of the dome-shaped cover portion, and to which the wiper blade is attached protruding to the dome-shaped cover portion side by a predetermined length.