Cover Overhanging Portion Reduces Gap in Image Forming Apparatus
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Solution Overview
Problem
Existing devices with covers for image forming apparatuses face challenges in reducing gaps while minimizing the increase in the number of components, leading to increased costs and potential noise leakage.
Innovation Solution
The device incorporates an overhanging portion at the end of the opening and closing cover, which overhangs from the outside to the inside along a rotation trajectory, and another overhanging portion at the cover's end, both formed in triangular shapes with inclined surfaces, to maintain a smaller gap without adding extra components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a gap is decreased by adding a component such as a rubber member and a seal member, then the gap between the cover and the opening and closing cover is reduced, but the number of components increases
Solution Approach 1:
The patent merges the gap-reducing function into the existing cover structure by forming an overhanging portion directly on the opening and closing cover. This integrates the gap reduction function into the cover itself rather than adding separate rubber members or seal members, thereby reducing the gap while avoiding an increase in component count
Solution Approach 2:
The patent employs dimensional change by creating an overhanging portion that extends in a direction perpendicular to the main plane of the cover. This three-dimensional structural modification allows the cover to overlap with the opening and closing cover, effectively reducing the gap through spatial arrangement rather than adding linear extensions or separate components
2Object-affected harmful factors
If the gap between the cover and the opening and closing cover is reduced, then noise leakage is minimized, but the structure becomes more complex
Solution Approach 1:
The noise reduction function is merged into the cover structure itself through the overhanging portion. This integrated design achieves noise leakage prevention without requiring separate soundproofing components or complex multi-layer structures, thereby minimizing structural complexity while effectively addressing noise leakage
Solution Approach 2:
The patent uses dimensional arrangement to prevent noise leakage by creating an overlapping configuration in the vertical dimension. The overhanging portion extends downward to overlap with the opening and closing cover, forming a noise-blocking structure through spatial arrangement rather than requiring complex horizontal layering or additional soundproofing materials
Data Source
AI summary
A device with a cover includes a cover that is provided at an apparatus body, an opening and closing cover that is provided at the apparatus body to be adjacent to the cover in a state where a gap with the cover is provided, that is opened and closed by rotating around a shaft portion arranged on an inside with respect to a portion of the opening and closing cover on a cover side, and that is adjacent to the cover on a shaft portion side, and an overhanging portion that is formed at an end portion of the opening and closing cover on the cover side and in which an end portion on the inside overhangs from an end portion on an outside to the cover side in a range of a rotation trajectory having a largest radius formed at the end portion on the cover side with the shaft portion as a rotation center.