Portable Adjustable Chair with Pivoting Back Support for Truck Bed Use

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Solution Overview

Problem

Existing portable chairs lack adjustability for use in truck beds, failing to efficiently occupy minimal space while providing comfortable seating.

Innovation Solution

A portable adjustable chair design featuring a seating area with a front and back portion, supported by respective legs and a cross-member, incorporating a fulcrum member that allows the back support to pivot and transfer support to a secondary support member when not in use, reducing the chair's footprint within a truck bed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the back support is made movable to reduce footprint, then space efficiency is improved, but structural stability deteriorates

Engineering Contradiction:
ImprovefootprintVSAvoidstructural stability
Core Design Contradiction:
Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The back support is designed as a movable component that can pivot between a horizontal position (providing back support) and a vertical position (reducing footprint). This dynamic configuration allows the chair to adapt its structure based on whether it is in use or being stored, resolving the contradiction between stability during use and compactness for storage.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The chair is divided into separate functional components: a fixed front support, a movable back support, and a fulcrum member connecting them. This segmentation allows the back support to move independently relative to the front support, enabling the chair to transition between expanded and compact configurations while maintaining structural integrity through the fulcrum connection.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the back support is moved to vertical position, then space efficiency is improved, but seating comfort deteriorates

Engineering Contradiction:
ImprovefootprintVSAvoidseating comfort
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The back support transitions dynamically between horizontal (comfortable seating position) and vertical (compact storage position) configurations. When in use, the back support remains horizontal to provide comfort; when not in use, it pivots vertical to minimize footprint, allowing the chair to satisfy both comfort and space efficiency requirements at different times.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10292503B2Portable adjustable chair
Publication Date: 2019.05.21 BROWN SHAUN WALTER
  • US10292503B2 patent drawing
  • US10292503B2 patent drawing
  • US10292503B2 patent drawing

AI summary

A portable adjustable chair is disclosed comprising a seating area for receiving a person having a front portion and a back portion. A front support connected to the front portion of the seating area for supporting the front portion of the seating area is also provided and a back support connected to the back portion of the seating area for supporting the back portion of the seating area. The chair also has a fulcrum member allowing movement of the back support and removing support for the back portion of the seating area provided by the back support while allowing the front support to support the front portion of the seating area and a support member connected to the seating area to support the back portion of the seating area when the back support is not supporting the back portion of the seating area.