Optical Scanning Device Cleaning System Edge Positioning
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Solution Overview
Problem
The optical scanning device's window portion contamination hinders proper irradiation of scanning light to the scanning object, necessitating regular automatic cleaning, which existing systems struggle to maintain effectively.
Innovation Solution
The optical scanning device incorporates a cleaning system with a cleaning unit and drive system that moves the cleaning member along the window portion's edges, ensuring thorough cleaning without interference or deformation, using a pulley and drive wire mechanism to interlock the holders and control the cleaning member's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the cleaning member is moved along the window portion using a holder, then the window portion can be cleaned automatically, but the cleaning member may interfere with the scanning light rays or become deformed due to improper positioning
Solution Approach 1:
The drive system positions the cleaning member inside the first edge and second edge of the window portion before cleaning operations begin. This preliminary positioning ensures that the cleaning member does not interfere with scanning light rays during cleaning, while still enabling effective cleaning of the window portion surface.
Solution Approach 2:
The cleaning member is positioned at specific locations relative to the window portion edges during different phases of operation. During outward cleaning, it is positioned inside the first edge; during return cleaning, it is positioned inside the second edge. This localized positioning optimizes cleaning effectiveness while preventing light interference.
2Productivity
If the cleaning member contacts the window portion surface, then cleaning effectiveness is improved, but the cleaning member may deform or the window portion may be damaged due to excessive contact pressure
Solution Approach 1:
The holder is designed to control and limit the contact pressure between the cleaning member and the window portion surface. By positioning the cleaning member inside the edges and controlling its movement, the system prevents excessive pressure that could cause deformation or damage, while maintaining sufficient contact for effective cleaning.
3Area of stationary object
If the holder moves the cleaning member across the entire window portion, then complete coverage is achieved, but the cleaning system complexity increases
Solution Approach 1:
The cleaning member is positioned inside the first edge and second edge of the window portion during outward and return cleaning operations. This partial positioning approach ensures complete coverage of the window portion surface while simplifying the holder design and reducing system complexity compared to requiring precise positioning throughout the entire window area.
Data Source
AI summary
Each of first and second glasses to be cleaned has a first edge and a second edge. A cleaning system has a cleaning member having a contact surface adapted to contact a surface of the glass, and first and second holders that hold the cleaning member. A drive system moves the holder so as to perform an outward cleaning moving from the first edge toward the second edge and a return cleaning returning from the second edge to the first edge. At a start position of the outward cleaning, the holder is stopped so that a portion of the contact surface of the cleaning member is positioned inside the first edge, and at a start position of the return cleaning, the holder is stopped so that a portion of the contact surface is positioned inside the second edge.