Binder-Mounted File Cover for Stable Spread and Closed Postures
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Solution Overview
Problem
Conventional files with a fixed-size binder portion struggle to maintain a stable spread state and often interfere with each other when closed, lacking flexibility in posture changes.
Innovation Solution
A file design featuring a cover with hinge-connected front and back covers, communication holes for binder rings, and a base-mounted binder with rotatable members, allowing for spread, closed, and folded postures, facilitated by engaging protrusions and mounting jigs for stable attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixed-size binder portion is mounted on the outer surface of the spine cover, then the binder can be securely attached, but the file cannot stably take a spread state where front and back covers become coplanar
Solution Approach 1:
The binder is extracted from the conventional outer surface mounting and repositioned to the inner surface of the spine cover. This extraction allows the covers to spread coplanarly without the binder interfering with the spread state stability.
Solution Approach 2:
The binder mounting location transitions from a two-dimensional outer surface to a three-dimensional inner surface configuration, allowing the binder to be positioned where it does not interfere with the coplanar spread state while maintaining secure attachment.
2Stability of the object's composition
If the binder is mounted on the spine cover, then the binder is securely positioned, but the file cannot take a closed posture where inner surfaces of front and back covers face each other without binder interference
Solution Approach 1:
The binder is extracted from the interfering outer surface position and relocated to the inner surface of the spine cover, enabling the front and back covers to close properly with their inner surfaces facing each other without binder interference.
Solution Approach 2:
Instead of mounting the binder on the outer surface as conventionally done, the invention inverts the mounting location to the inner surface of the spine cover, fundamentally changing the spatial relationship between the binder and the covers to resolve the closure interference problem.
3Adaptability or versatility
If communication holes are added to allow binder rings to pass through, then posture change between spread and closed states is enabled, but the cover structure becomes more complex
Solution Approach 1:
The cover is segmented by adding communication holes that allow the binder rings to pass through, creating distinct functional zones that enable the cover to transition between spread and closed postures while maintaining structural integrity.
Data Source
AI summary
A file having the configuration that allows the file to suitably take a spread posture and a closed posture of a cover is provided.The file is configured to be capable of changing a posture of the file such that a cover A can take a spread posture (H) and a closed posture. A binder B includes: front and rear binding rings R(f), R(r) that are configured to be capable of taking an open posture (P) and a closed posture; and a base portion d2 mounted on an inner surface of a spine cover 3. A front cover 1 and a back cover 2 have first and second communication holes a1, a2 that allow the front and rear binding rings R(f), R(r) to pass therethrough thus enabling the cover A to perform the posture change between the spread posture (H) and the closed posture.