Scanner Unit Hinge Mechanism for Unobstructed Maintenance Access
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Solution Overview
Problem
The existing printer design, as described in JP-A-2021-190873, faces issues where the supporting rod for the scanner unit obstructs access to the housing during maintenance due to its positioning at the open side, hindering effective maintenance operations.
Innovation Solution
A housing unit with an opening/closing section that rotates on a rotational movement shaft, featuring a first engaging portion and a second engaging portion that engage at a specific angle to maintain the scanner unit in an open posture, allowing for enhanced access and simplified maintenance without obstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a supporting rod is used to maintain the scanner unit in an open posture, then the workability during maintenance is improved, but the supporting rod blocks access to the inside of the housing
Solution Approach 1:
The patent removes the supporting rod from the system entirely. Instead of using a rod that extends into the housing interior, the invention uses the hinge structure itself to maintain the scanner unit in an open posture, eliminating the obstructing element while preserving the functional benefit.
Solution Approach 2:
Instead of adding a support element to maintain the open posture, the invention inverts the approach by using the hinge's geometric constraints and the scanner unit's weight to naturally maintain the open position, turning the problem of needing support into a solution where no support is needed.
2Adaptability or versatility
If the supporting rod is positioned at the open side to maintain the scanner unit, then the scanner unit can be maintained in an open state, but it obstructs access to the housing interior for maintenance operations
Solution Approach 1:
The supporting rod is completely removed from the system. The invention achieves the ability to maintain the scanner unit in an open state without relying on any element that would obstruct access to the housing interior.
Solution Approach 2:
The scanner unit's weight and the hinge structure work together to automatically maintain the open posture without requiring any additional support elements, allowing the system to serve itself rather than needing external assistance that would block access.
Data Source
AI summary
A housing structure includes a housing including an opening, and a scanner unit configured to rotate relative to the housing with a rotational movement shaft being a center to switch a posture to a closing posture and an opening posture. The opening is closed in the closing posture and open in the opening posture. The scanner unit includes a protruding portion. The housing includes a support portion. As the scanner unit is opened at 52° or more from the closing posture, the protruding portion together with the scanner unit is able to move in a direction along the rotational movement shaft. As the protruding portion moves in a direction along the rotational movement shaft, the protruding portion and the support portion engage with each other. Upon the protruding portion and the support portion engaging with each other, the scanner unit is maintained in the opening posture.