Adjustable Pole Caddy Shelves With Friction-Locking Collars
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Solution Overview
Problem
Traditional pole caddies with permanently attached shelves are difficult to clean and adjust, requiring tools for elevation changes, which can damage the pole and increase manufacturing costs, while also complicating maintenance and cleanliness.
Innovation Solution
A pole caddy design featuring shelves that pivot on collars with elastomer pads for frictional engagement, allowing easy elevation adjustment and removal, using a combination of welded wire and injection molded plastic collars, enabling shelves to be easily cleaned and rearranged without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If shelves are permanently attached to collars, then structural stability is improved, but ease of cleaning and adjustability deteriorates
Solution Approach 1:
The shelf assembly is segmented into three separable components: the shelf body, the collar, and the attachment mechanism. The shelf attaches to the collar via tangs that engage with slots, allowing the shelf to be easily detached from the collar for cleaning without removing the collar from the pole, thus maintaining structural stability during use while enabling easy cleaning when needed.
2Ease of operation
If screws or fasteners are used to hold collars in place, then adjustability is improved, but pole surface damage and manufacturing cost increase
Solution Approach 1:
The screw-based mechanical fastening system is replaced with a friction-based retention system. The collar includes a flange with outwardly extending arms that press against the pole surface, creating frictional force to hold the collar in place. This substitution eliminates the need for screws that could mar the pole surface while maintaining adjustability through simple frictional engagement.
3Ease of operation
If multiple vertical holes or depressions are added to the pole for fasteners, then adjustability is improved, but manufacturing cost and cleaning difficulty increase
Solution Approach 1:
The adjustment functionality is extracted from the pole and relocated to the collar assembly. Instead of modifying the pole with multiple holes or depressions, the collar itself incorporates the adjustment mechanism through its frangible connection to the shelf and its friction-based retention on the pole. This extraction keeps the pole structure simple and easy to clean while maintaining full adjustability capability.
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 design enhances ease of adjustability and cleaning, reduces manufacturing costs, and maintains a clean and aesthetically pleasing appearance by allowing shelves to be easily removed and repositioned, while minimizing the risk of pole damage.
Implementation Method 1
The tab has a contact portion, for example an elastomer pad, which is pressed against the pole by the brace due to the weight of the shelf and any load on the shelf, creating frictional force which holds the collar and thus the shelf at a desired elevation.
Data Source
AI summary
A pole caddy comprises a pole, one or more collars to each of which is removably attached a cantilevered shelf preferably made of metal wire. Each collar, preferably made of structural plastic, has a downwardly extending tab that runs along the pole. The tab has a contact portion, preferably an elastomer pad, in contact with the exterior of the pole. The weight of the shelf and any articles on the shelf applies force through a brace part of the shelf, to cause the tab to frictionally engage the pole and thus hold the shelf at a desired elevation.