Document Feeding Device Tray-Swing Housing Mechanism
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Solution Overview
Problem
Conventional auto document feeders are difficult to handle, especially for individuals with less strength, as the upper frame is firmly fixed, making it hard to open and resolve document jams during maintenance.
Innovation Solution
A document feeding device with a housing system where the second housing is openable by swinging the document set tray, allowing easier exposure of the document conveyance mechanism, improving the operation for resolving sheet jams and maintenance work.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the upper frame is firmly fixed to the main body frame to maintain a precise conveyance path, then the conveyance precision is improved, but the ease of operation for opening the frame during document jam resolution deteriorates
Solution Approach 1:
The housing is divided into a first housing (main body frame) and a second housing (upper frame) that can be separated. The second housing is openable with respect to the first housing, allowing users to access the document conveyance mechanism without requiring excessive force, thus resolving the contradiction between firm fixation for precision and ease of opening for operation.
2Reliability
If the upper frame is firmly fixed to maintain structural stability, then the reliability of the document conveyance mechanism is improved, but the ease of repair and maintenance deteriorates
Solution Approach 1:
The housing is segmented into separable first and second housings, allowing the second housing to be opened for maintenance and repair operations while maintaining structural integrity during normal operation. This enables easy access to the document conveyance mechanism for troubleshooting and maintenance without compromising overall structural stability.
Solution Approach 2:
The second housing is configured to be dynamically openable with respect to the first housing. This dynamic configuration allows the housing to transition from a closed stable state during operation to an open accessible state during maintenance, resolving the contradiction between structural stability and ease of repair.
3Ease of operation
If the second housing is positioned to overlap with the movement trajectory of the document set tray, then the ease of opening the second housing is improved, but the device complexity increases
Solution Approach 1:
The opening trajectory of the second housing is merged with the movement trajectory of the document set tray. By positioning the closed position of the second housing to overlap with the movement trajectory of the document set tray, the opening operation utilizes the existing spatial configuration, simplifying the overall device structure while improving ease of opening.
Data Source
AI summary
A document feeding device 10 of an image forming apparatus 1 includes a housing 14 that houses a document conveyance mechanism 15, and a document set tray 16. An upper cover 12 of the housing 14 is openable and closable with respect to a fixed cover 11, and the document set tray 16 is swingably supported. A closed position of the upper cover 12 with respect to the fixed cover 11 is set to a position overlapping with a movement trajectory M of the document set tray 16 during a swinging operation, and it is possible to open the upper cover 12 in connection with the swinging operation of the document set tray 16.