Seat Tilting System with 360-Degree Pivot and Stackable Design

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Solution Overview

Problem

Conventional chairs restrict tilting motion to a single vertical plane, limiting user movement and contributing to orthopedic issues, and often feature complex mechanisms that prevent efficient stacking and storage.

Innovation Solution

A tilting system with an annular elastomer compression spring and compression ring, allowing 360-degree pivoting around a vertical axis, adjustable resistance, and a design that enables easy stacking by positioning the mechanism between the seat and base, rather than centrally.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional tilting mechanism with a central support beam is used, then the chair provides tilting function, but the chair cannot be stacked or stored efficiently

Engineering Contradiction:

Improvetilting functionVSAvoidstacking capability

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent removes the central support beam from the chair structure, extracting the element that prevented stacking. The tilting mechanism is repositioned to use the existing leg structure, allowing chairs to be stacked efficiently while maintaining the tilting function through a different structural arrangement.

Inventive Principle:

Principle #2Taking out (Extraction)

2Device complexity

If a conventional tilting mechanism restricting motion to a single vertical plane is used, then the mechanism is simple, but user movement is limited and orthopedic issues may arise

Engineering Contradiction:

Improvemechanism simplicityVSAvoidmovement range

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic tilting mechanism where the seat can tilt forward and backward while also allowing lateral movement and rotation. The linkage system connects the seat to the legs, enabling multi-directional movement that adapts to user needs while maintaining mechanical simplicity through the use of connected structural elements.

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

Enables natural, progressive tilting in all directions, reducing static sitting-related health issues and allowing chairs to be stacked efficiently, providing a comfortable and versatile seating solution.

Implementation Method 1

an annular, uniform, elastomeric compression spring surrounding the pivot

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the movement of the top plate is resisted by the compression spring

Methodology Applied

Scientific EffectCompression: Compression

Implementation Method 3

a compression ring surrounding the compression spring... the compression ring constrains the compression spring from moving laterally

Methodology Applied

Scientific EffectPhysical containment: Physical Containment

Data Source

PatentUS11439235B2Seat tilting system

Publication Date: 2022.09.13 ARTCO BELL CORP

AI summary

A seat tilting device includes: a bottom plate secured to a seat base; a top plate secured to a seat; a pivot connecting the top plate to the bottom plate; a compression spring surrounding the pivot; and a compression ring surrounding the compression spring, wherein there is space between a bottom surface of the top plate and a top surface of the compression ring such that the top plate may tilt on the pivot until it contacts the top surface of the compression ring and the movement of the top plate is resisted by the compression spring.