Adjustable Hanging Folder Frame With Locked Wireframe Legs
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Solution Overview
Problem
Existing hanging file systems lack stability and rigidity, making it difficult to handle heavy files, and vertical filing systems are prone to paper loss due to inadequate pocket coverage and stress on the folder elements.
Innovation Solution
A frame with adjustable length and width, featuring transverse and longitudinal segments with slots and bridging rails, wireframe leg elements, and deflectable sidewalls to provide structural support and prevent paper loss, along with L-shaped slots and rails for smooth folder access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid frame structure is used to provide stability, then structural strength is improved, but adaptability to different file sizes is reduced
Solution Approach 1:
The frame structure incorporates adjustable legs with cam mechanisms that allow the frame dimensions to be dynamically modified. The legs can be extended or retracted to accommodate different file sizes while maintaining structural integrity through the cam locking mechanism that secures the legs in position.
Solution Approach 2:
The frame is divided into modular components including separate adjustable legs, transverse members, and longitudinal members that can be independently adjusted. This segmentation allows each component to be optimized for strength while collectively providing adaptability through coordinated adjustment of individual segments.
2Adaptability or versatility
If the frame is made adjustable to accommodate different file sizes, then adaptability is improved, but structural stability deteriorates
Solution Approach 1:
The cam mechanism provides a dynamic locking system that transitions the adjustable legs from a movable state during adjustment to a locked stable state during use. The cam lobes engage with slots to prevent unintended movement while allowing deliberate adjustment when needed.
Solution Approach 2:
The frame is designed with pre-engineered adjustment mechanisms that maintain stability in the adjusted position. The cam locks and connection structures are预先 designed to secure the frame in various configurations, ensuring stability is established before the frame is put into service.
3Reliability
If vertical filing pockets are made deep to prevent paper loss, then paper retention is improved, but ease of removing papers deteriorates
Solution Approach 1:
The vertical pockets are designed with depth that provides sufficient paper retention through friction and coverage, but not excessively deep to create removal difficulties. The pocket depth is optimized to provide just enough coverage to prevent paper loss while maintaining accessible paper edges for easy removal.
4Reliability
If accordion sidewalls are added to vertical pockets to prevent paper loss, then paper retention is improved, but device complexity and cost increase
Solution Approach 1:
The complex accordion sidewall mechanism is removed entirely. Instead, simple vertical pockets with appropriate depth and friction properties are used to achieve paper retention without the need for complicated expandable sidewall structures.
Solution Approach 2:
The design accepts that pockets may need replacement over time but uses simple, inexpensive materials and construction methods. The pockets are made from basic materials rather than complex engineered components, prioritizing simplicity and cost-effectiveness over long-term durability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The frame offers enhanced stability and paper retention by ensuring secure engagement of wireframe leg elements and preventing paper loss through deflectable sidewalls and frictional retention, allowing for easy adjustment to accommodate different file sizes.
Implementation Method 1
frictional retention
Data Source
AI summary
A hanging file folder frame is disclosed in several embodiments one of which is constructed of three segments. Two frames are joined together by rails. The frame includes a slot of a particular profile and the rails have a similar profile to slide into the slots. On the bottom of the frame are recesses sized to receive a portion of a wireframe leg. The leg is prevented from being ejected from the frame by a spanning flange which bridges part of the recess and confines a part of the leg between the recess walls and the flange.