Document Conveyance Apparatus Stopper Mechanism for Cover Angle Control
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Solution Overview
Problem
Document conveyance apparatuses do not maintain a desirable opening angle for the cover, which can lead to interference with adjacent apparatuses, such as post-processing devices, when the cover is opened.
Innovation Solution
Incorporating a restriction member attached to the elongated hole of the document conveyance apparatus, which restricts the moving amount of the stopper along the hole, allowing the document cover to be supported at an opening angle smaller than the fixed angle, preventing interference with adjacent devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the stopper is configured to support the document cover at a fixed opening angle, then the cover can be maintained at a stable opening angle, but the cover may interfere with adjacent apparatuses when opened
Solution Approach 1:
The patent applies the dynamics principle by making the stopper movable along an elongated hole instead of fixed. The stopper can dynamically adjust its position within the elongated hole to accommodate different opening angles. When the document cover opens, the stopper moves along the elongated hole to a position that prevents interference with adjacent apparatuses, while still maintaining stability at the desired opening angle through engagement with the elongated hole's boundaries.
2Adaptability or versatility
If the stopper is made movable along an elongated hole to prevent interference, then the opening angle can be adjusted, but the mechanism becomes more complex
Solution Approach 1:
The patent applies the universality principle by designing the stopper to serve multiple functions: it acts as both a positioning element that maintains the document cover at a fixed opening angle and a movable element that adjusts along the elongated hole to prevent interference with adjacent apparatuses. This multi-functional design eliminates the need for separate adjustment mechanisms, thereby reducing overall device complexity while maintaining adaptability.
3Length of moving object
If the stopper is positioned far from the elongated hole to restrict movement, then the cover opening angle is reduced, but the stopper's rotational support position becomes less stable
Solution Approach 1:
The patent applies the local quality principle by strategically positioning the stopper's rotational support at a specific location that optimizes both stability and movement restriction. The rotational support is positioned such that the stopper maintains stable engagement with the elongated hole while its movement along the hole is naturally restricted by the hole's geometry. This localized positioning ensures that the stopper remains stable during rotation while effectively limiting the document cover's opening angle.
Data Source
AI summary
A document conveyance apparatus includes a conveyance part, a document cover, a stopper and a restriction member. One end of the stopper is rotatably supported by the document cover, and the other end of the stopper is movably supported by an elongated hole formed in the conveyance part. The stopper supports the document cover with respect to the conveyance part at a fixed opening angle. The restriction member is attached to the elongated hole. When the restriction member is attached to the elongated hole on the side of the one end edge, a moving amount of the other end of the stopper along the elongated hole at a time of opening the document cover is restricted to be short so that the document cover is supported at an opening angle smaller than the fixed opening angle.