Cleaning apparatus, and housing and sensor used therefor
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Solution Overview
Problem
Sensors in electronic products, such as infrared sensors, face signal distortion due to reflection from mounting holes and are affected by water vapor in humid environments, leading to misjudgments and reduced service life.
Innovation Solution
A cleaning device housing with an inclined mounting hole and a reflective structure on the hole wall, which divides the surface into multiple reflecting surfaces, reduces signal reflection and includes a hermetically sealed sensor assembly to prevent water vapor ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mounting hole is provided for the sensor, then the sensor can transmit and receive signals, but signal distortion occurs due to reflection from the hole wall
Solution Approach 1:
The patent converts the harmful reflection from the mounting hole wall into a beneficial effect by designing a reflective structure with specific inclination angles. The reflective structure redirects reflected light away from the sensor, transforming the harmful reflection into a useful feature that prevents signal distortion while maintaining transmission reliability.
Solution Approach 2:
The patent applies different surface properties to different parts of the mounting hole structure. The hole wall is designed with specific inclination angles and reflective characteristics in certain zones, while other areas maintain different properties, creating localized optical control to prevent signal distortion without affecting overall sensor functionality.
2Reliability
If the sensor is exposed to the environment for signal transmission, then the sensor can function, but water vapor enters the sensor in humid environments, reducing service life
Solution Approach 1:
The patent employs a sealing structure that acts as a protective barrier between the sensor and the external humid environment. This sealing mechanism allows the sensor to remain enclosed and protected from water vapor ingress while still enabling optical signal transmission through the mounting hole structure.
3Ease of manufacture
If the mounting hole wall is smooth, then manufacturing is easier, but signal reflection is increased causing misjudgment
Solution Approach 1:
The patent applies different surface properties to different parts of the mounting hole structure. The hole wall is designed with specific inclination angles and reflective characteristics in certain zones, while other areas maintain different properties, creating localized optical control to prevent signal distortion without affecting overall sensor functionality.
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 minimizes signal distortion and extends sensor service life by controlling light reflection and preventing water vapor entry, enhancing the accuracy and reliability of sensor operations in humid conditions.
Implementation Method 1
due to the reflection by a hole wall, a detection result of the sensor may be distorted... the hole wall is provided with a reflective structure; and the reflective structure divides the hole wall into a plurality of reflecting surfaces
Implementation Method 2
a sealing part disposed between the cover body and the main body portion such that the main body portion and the cover body are hermetically connected... preventing water vapor entry
Data Source
AI summary
A cleaning apparatus, a housing and a sensor used therefor. The housing is provided with a mounting hole for assembling the sensor; a hole wall of the mounting hole is obliquely provided, such that a cross-sectional area of the mounting hole is gradually increased from the inside to the outside; and a reflective structure is arranged on the hole wall, and the reflective structure divides the hole wall into a plurality of reflecting surfaces. The sensor comprises a shell and a sensor assembly arranged inside the shell, wherein the shell is provided with a lens; a cover is used for closing an opening of a main body portion; the cover is connected to the main body portion by means of a threaded member; and a sealing member is provided between the cover and the main body portion, such that the main body portion and the cover are in sealing connection.