Loading Tray Interlock for Roller Cover Closure in Media Feeders
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Solution Overview
Problem
Medium conveying apparatuses face issues with improper closure of the roller cover leading to jamming or skewing of media during conveyance, especially after roller replacement or cleaning.
Innovation Solution
A medium conveying apparatus with a loading tray that can be attached and detached, featuring a cover that is automatically closed by the tray's movement, ensuring the roller cover remains closed during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cover is made openable and closable to allow roller replacement and cleaning, then ease of operation is improved, but reliability deteriorates due to risk of improper closure causing jamming or skewing
Solution Approach 1:
The loading tray is designed to automatically push the cover to the closed position through its movement from loading position to operational position. This preliminary action ensures the cover is properly closed before medium conveyance begins, preventing jamming or skewing while maintaining ease of roller replacement and cleaning access when needed.
2Reliability
If a locking mechanism is added to ensure cover closure, then reliability is improved, but device complexity increases
Solution Approach 1:
The loading tray itself serves the dual function of both loading media and actuating the cover closure. As the tray moves from its loading position to the operational position, it automatically pushes the cover to the closed position through integrated contact geometry. This self-service mechanism eliminates the need for separate locking mechanisms, buttons, or sensors, maintaining device simplicity while ensuring reliable cover closure.
3Reliability
If the loading tray is made fixed to ensure stable medium placement, then reliability is improved, but adaptability deteriorates due to reduced access for maintenance
Solution Approach 1:
The loading tray is designed with dynamic positioning capability, allowing it to move between a loading position (for easy medium loading and maintenance access) and an operational position (for stable medium conveyance). During operation, the tray's movement automatically closes the cover, ensuring reliability. This dynamic design provides both stable medium placement during conveyance and easy access for maintenance when the tray is in the loading position.
Data Source
AI summary
Provided is a medium conveying apparatus which is prevented from being used with a roller cover open. A medium conveying apparatus includes a housing, a loading tray provided to be attachable and detachable relative to the housing and be movable between a fixed position where the loading tray is fixed to the housing to place a medium and an inclined position inclined relative to the fixed position for mounting the loading tray to the housing, a roller to separate the medium, and a cover provided to be openable and closable relative to the housing and be swingable between a closed position where the cover covers the roller and forms part of a guide surface of a medium and an open position for attaching and detaching the roller. The loading tray includes a contact part to come into contact with the cover and push the cover toward the closed position when the loading tray is located at the inclined position or when the loading tray moves from the inclined position to the fixed position with the cover located at the open position.