Replaceable Stool Assembly With Detachable Seat and Ribbed Base
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Solution Overview
Problem
Existing table-stool seating systems require the replacement of entire stool seating portions when either the seat or seat-support structure fails, leading to inefficiencies in labor, materials, and cost, especially in institutional settings, and often result in aesthetic mismatches due to incompatible parts.
Innovation Solution
A replaceable stool assembly with a base portion and seat portion designed to be removably mounted to the tubing of a table, featuring reinforcing ribs for structural integrity, allowing for individual component replacement without necessitating the entire assembly's replacement, and compatible with both 1″ and 1¼″ diameter tubing without re-drilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an integral one-piece stool seating portion is used, then the stool has structural simplicity and ease of manufacture, but the entire stool seating portion must be replaced when either the seat or seat-support structure fails
Solution Approach 1:
The stool seating portion is divided into two separate components: a seat portion and a seat-support structure. The seat portion can be detached from the seat-support structure, allowing independent replacement of each component. This segmentation enables repair of only the damaged part rather than replacing the entire integral structure, thus improving ease of repair while maintaining manufacturing simplicity for each individual component.
2Reliability
If the entire stool seating portion is replaced when a component fails, then structural integrity is maintained, but labor and material costs increase significantly
Solution Approach 1:
By segmenting the stool into detachable seat portion and seat-support structure, the system allows replacement of only the failed component while maintaining structural integrity through secure reattachment of the remaining functional parts. This reduces both labor and material costs compared to replacing the entire assembly.
Solution Approach 2:
The invention enables recovery and reuse of functional components. When one part fails (seat or seat-support structure), the functional part can be detached, recovered, and reused on a replacement assembly, reducing material waste and manufacturing costs while maintaining structural integrity.
3Manufacturing precision
If different sized tubing requires different seat-support structures, then proper fit is achieved, but inventory complexity and manufacturing costs increase
Solution Approach 1:
The seat-support structure is designed with universal adaptability to accommodate multiple tubing diameters (1" and 1¼"). A single design of seat-support structure can be used across different tubing sizes, eliminating the need for multiple specialized versions. This reduces inventory complexity and manufacturing costs while maintaining proper fit through adjustable or adaptable mounting mechanisms.
4Strength
If the seat-support structure makes up the majority of mass and volume, then structural strength is provided, but replacement cost and inefficiency increase when only the seat portion needs replacing
Solution Approach 1:
The segmentation of the stool into detachable seat portion and seat-support structure enables selective replacement. When only the seat portion fails, only that lightweight component needs replacement while the heavy seat-support structure remains in use. This reduces material waste significantly compared to replacing the entire stool assembly, while the seat-support structure continues to provide the necessary structural strength.
Data Source
AI summary
A replaceable stool assembly is adapted to be removably mounted to the free end of a tubing of a piece of furniture. The assembly includes a base portion adapted to be removably mounted to the free end of the tubing and defining a plurality of reinforcing ribs disposed on the base portion for adding structural integrity to the base portion. The stool assembly further includes a seat portion adapted to operatively support a user of the assembly and be nestingly received by and removably supported on the base portion.