Hanging File Folder Rod Design for Rail Misalignment Tolerance

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Solution Overview

Problem

Hanging file folders often lack sufficient strength and ease of adjustment along spaced apart rails, leading to potential derailing due to variances in rail distance and angle, which complicates hanging and sliding without dislodging from the rails.

Innovation Solution

The implementation of a hanging file folder system with a resilient rod structure that allows longitudinal movement of hook portions to adjust the effective length, accommodating variances in angle and maintaining engagement with the rails, thereby preventing dislodging.

Engineering Contradictions & Design Principles

VSEngineering 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 slide

Engineering Contradiction:
Improvestrength of hooks and rodsVSAvoidease of sliding folders along rails
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The rod is designed with resilient sections that allow it to flex and dynamically adjust to lateral forces applied during sliding operations. This dynamic flexibility enables the rod to maintain engagement with the rails while accommodating the twisting and flexing that occurs when folders are moved, preventing the folder from locking onto the rail.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rod's physical properties are changed by incorporating resilient sections with specific flexibility characteristics. This parameter change allows the rod to deform under lateral loads and then return to its original position, maintaining engagement with the rails while allowing smooth sliding motion.

Inventive Principle:
Principle #35Parameter changes

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 adjusted at an angle, the file folder may dislodge or come off of the rail entirely

Engineering Contradiction:
Improveaccommodation of rail misalignmentVSAvoidengagement with rails
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The resilient sections of the rod allow it to dynamically adjust its position and angle in response to misaligned rails. When the folder is hung or adjusted, the rod can flex to accommodate non-perpendicular angles while maintaining secure engagement with both rails, preventing dislodging even when rails are not perfectly parallel or spaced.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rod's flexibility parameter enables it to adapt to varying rail configurations. The resilient sections can deform to match the actual geometry of misaligned rails, maintaining reliable engagement across different cabinet configurations without requiring perfect rail alignment.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If a file folder has a small derailing angle with respect to the spaced apart rails, then it is difficult to hang and adjust or slide file folders along such rails without having the folders come off the rails

Engineering Contradiction:
Improveease of hanging and adjusting foldersVSAvoidprevention of derailing
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The resilient rod sections provide dynamic adjustment capability that increases the effective derailing angle. When lateral forces are applied during hanging or sliding operations, the rod flexes to accommodate larger angular deviations, allowing folders to be easily hung and adjusted without coming off the rails, while still maintaining secure engagement during normal use.

Inventive Principle:
Principle #15Dynamics

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

Enhances the strength and ease of sliding file folders along rails by increasing the derailing angle and accommodating rail misalignment, ensuring secure and stable hanging even when rails are not perfectly parallel or spaced equally.

Implementation Method 1

a resilient rod structure that allows longitudinal movement of hook portions to adjust the effective length, accommodating variances in angle and maintaining engagement with the rails

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11845297B2Rods for use with hanging file holders
Publication Date: 2023.12.19 TOPS PRODUCTS LLC
  • US11845297B2 patent drawing
  • US11845297B2 patent drawing
  • US11845297B2 patent drawing

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.