Sheet Feeding Device Restricting Member Stability
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Solution Overview
Problem
Conventional sheet feeding devices face issues with the sheet stacking portion moving during transportation, potentially leading to damage or noise when the device is mounted, due to the lack of effective restriction mechanisms.
Innovation Solution
A sheet feeding device is designed with a restricting member that attaches to the supporting frame, preventing the sheet stacking member from moving downward when lifted to a predetermined position, thus ensuring stability during transportation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sheet stacking portion is lifted by winding up the wire to make it abut to a part of the sheet accommodating portion to restrict moving during transportation, then the sheet stacking portion is restricted from moving, but the packaging material may be fallen by the sheet stacking portion lifting or a driving portion may make noise when the device is mounted
Solution Approach 1:
The restriction function is divided into two independent parts: the wire for lifting the sheet stacking portion, and the packaging material for restricting movement. This segmentation allows each component to perform its specific function without interfering with the other, preventing the packaging material from falling while the sheet stacking portion is lifted.
Solution Approach 2:
The sheet stacking portion is lifted to a predetermined position before shipping, and the packaging material is positioned to restrict movement at this position. This preliminary action ensures that when the device is mounted and the sheet stacking portion is lowered, the packaging material remains in place and does not fall, preventing noise and damage.
2Quantity of substance
If a bulk of sheet is stacked on the sheet stacking portion, then the sheet feeding capacity is increased, but the sheet stacking portion requires lifting up and down which increases the movable area
Solution Approach 1:
The sheet stacking portion is designed as a movable component that can be lifted up and down via a wire winding mechanism. This dynamic structure allows the sheet stacking portion to accommodate bulk sheets while maintaining a compact form factor during storage and transportation, effectively managing the trade-off between capacity and complexity.
3Device complexity
If the sheet stacking portion is not restricted during transportation, then the structure is simple, but the sheet stacking portion may move and break in the sheet accommodating portion by vibration
Solution Approach 1:
The packaging material serves as an intermediary between the sheet stacking portion and the sheet accommodating portion. It provides a simple yet effective restriction mechanism that prevents the sheet stacking portion from moving and breaking during transportation due to vibration, without adding complex structural elements.
Data Source
AI summary
A sheet feeding device includes a sheet stacking member, a feeding member provided above the sheet stacking member, a lifting member to lift up and down the sheet stacking member. An accommodating unit for accommodating the sheet and is provided with a supporting frame for supporting the sheet stacking member. A restricting member restricts a position of the sheet stacking member. Movement in a lifting down direction of the sheet stacking member is restricted by the restricting member when the restricting member is attached to the supporting frame in a state in which the sheet stacking member is lifted up to a predetermined position.