Rods for use with hanging file holders
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Solution Overview
Problem
Hanging file folders often lack sufficient strength and engagement with rails, leading to derailing issues when adjusted or moved, especially due to variances in rail spacing and alignment within filing cabinets.
Innovation Solution
The design incorporates a resilient rod structure with adjustable hook portions that can move longitudinally to accommodate angle variances, ensuring secure engagement with rails and preventing dislodging, featuring a hook and rod assembly with a resilient mechanism, such as a tension spring, to maintain effective length and engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the load within the pocket of a file folder increases, then the hooks and rods require increased strength to provide suitable engagement with the rails, but the file folder may be twisted or flexed and may lock onto the rail, making it difficult to adjust
Solution Approach 1:
The rod is designed with a resilient section that allows it to flex and bend, transforming from a rigid structure to a dynamic one. This enables the rod to adapt to rail spacing variations and maintain engagement without locking onto the rail, thus preserving ease of operation while providing sufficient strength through the resilient material properties
Solution Approach 2:
The rod's physical state is changed from rigid to resilient by selecting appropriate material properties and structural design. The resilient section allows the rod to deform elastically under load, changing its geometric parameters dynamically to accommodate rail variations and prevent locking, thereby maintaining both strength and ease of operation
2Adaptability or versatility
If the spaced apart rails within cabinets are not provided perfectly at the same distance or are not parallel, then file folders may not hang perpendicular to the rails, but when moved or adjusted, the file folder may be pushed at an angle creating a greater distance between hooks, causing dislodging
Solution Approach 1:
The resilient rod section provides dynamic adaptability by allowing the rod to flex and adjust its shape in response to non-uniform rail spacing. This dynamic response enables the folder to maintain secure engagement even when rails are not perfectly parallel or equally spaced, preventing dislodging during adjustment movements
Solution Approach 2:
The resilient rod is pre-designed to anticipate and accommodate potential rail spacing variations before they cause problems. By incorporating flexibility in advance, the system can handle misaligned rails without requiring adjustment or intervention, maintaining reliable engagement from the outset
3Reliability
If a file folder has a small derailing angle with respect to the spaced apart rails, then the hooks dislodge easily from the rail when the folder is pushed at an angle, but increasing the derailing angle requires a more complex hook and rod assembly
Solution Approach 1:
The derailing angle is enhanced by changing the physical state of the rod from rigid to resilient. This material and structural parameter change allows the rod to flex and maintain a larger effective engagement angle with the rail, increasing the derailing angle without requiring complex mechanical structures like additional hooks or locking mechanisms
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
This solution enhances the strength and stability of file folders, allowing for easier adjustment and sliding along rails while increasing the derailing angle, ensuring secure attachment even on non-parallel or unevenly spaced rails, thereby preventing dislodging and improving overall usability.
Implementation Method 1
At least one of the first and second rods has a resilient structure for permitting at least one of the hook portions thereof to move longitudinally and adjust an effective length of its rod
Implementation Method 2
featuring a hook and rod assembly with a resilient mechanism, such as a tension spring, to maintain effective length and engagement
Data Source
AI summary
Rods for use in a filing system are disclosed. An example file folder rod includes a first end, a second end and an elongated body extending between the first end and the second end, the elongated body having a longitudinal axis. The example rod also includes a hook coupled to the first end of the rod. The example hook includes a longitudinal portion extending along the longitudinal axis, an elongated hook portion coupled to an end of the longitudinal portion with the elongated hook portion extending from the longitudinal portion a first distance, and a first extension extending from the longitudinal portion with the first extension extending from the longitudinal portion a second distance, the second distance less than the first distance.