Nested Sheet Feeding Adjuster Prevents Protrusion Injury
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Solution Overview
Problem
Conventional manual sheet-feeding devices have adjusting members that protrude from the apparatus body, posing risks of user injury and device damage due to accidental contact, and require readjustment if hit.
Innovation Solution
The adjusting members are positioned within the sheet feeding opening and are movable in a direction orthogonal to the sheet insertion, guiding the sheet internally without protruding, preventing user contact and eliminating the need for readjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adjusting member protrudes from the apparatus body, then the user can easily access and operate the adjusting member, but the user's clothes may get caught in the adjusting member or the user may hit his hand on the adjusting member, causing injury or device damage
Solution Approach 1:
The adjusting member is nested within the sheet feeding opening and does not protrude from the exterior surface of the apparatus body. The adjusting member is positioned inside the apparatus body while still being accessible for operation, effectively hiding the dangerous part within the device structure.
Solution Approach 2:
The adjusting member is repositioned from a protruding external structure to an internal structure within the sheet feeding opening. By changing the spatial dimension from external protrusion to internal positioning, the patent eliminates the harmful exposure while maintaining functionality.
2Ease of operation
If the adjusting member protrudes from the apparatus body, then the adjusting function is readily accessible, but the adjusting member may move due to accidental contact, requiring readjustment of the sheet position
Solution Approach 1:
The adjusting member is nested within the sheet feeding opening, protecting it from accidental external contact. This nested positioning prevents unintended movement while maintaining the ability to deliberately adjust the sheet position when needed.
Solution Approach 2:
The design preemptively prevents accidental contact with the adjusting member by positioning it internally within the sheet feeding opening. This preliminary protective measure stops potential harmful actions before they can occur, ensuring position stability.
3Object-affected harmful factors
If the adjusting member is positioned internally within the sheet feeding opening, then user safety is improved and accidental movement is prevented, but the adjusting member must still be accessible for operation
Solution Approach 1:
The adjusting member is nested within the sheet feeding opening in such a way that it remains accessible for deliberate operation while being protected from accidental contact. The nested positioning allows the adjusting member to be reached when needed but hidden when not in use.
Solution Approach 2:
The adjusting member is repositioned to a different spatial dimension - internally within the sheet feeding opening rather than externally protruding. This dimensional change maintains operational accessibility while eliminating safety hazards.
Data Source
AI summary
An adjusting member is positioned in a sheet feeding opening. The adjusting member is adjusted according to the size of the paper sheet. The adjusting member does not jut out of an exterior surface of an apparatus body.