Foldable Rocking Chair Frame Using Nested Stands and Sliding Links

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Solution Overview

Problem

Most rocking chairs are not foldable, taking up significant space and being inconvenient for storage and transportation, and existing foldable models are difficult to fold and unfold.

Innovation Solution

A foldable rocking chair frame design featuring interconnected left and right side stands with a rocking structure, supports, and a connecting assembly that allows for easy folding and unfolding, including an arched member, slider, links, and cross members for stability and portability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If rocking chairs are made foldable, then storage and transportation convenience is improved, but folding and unfolding operation becomes difficult

Engineering Contradiction:
Improvestorage convenienceVSAvoidfolding operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The side stands are designed to nest within each other when folded, with the second side stand containing the first side stand. This nesting arrangement compactly stores the chair while maintaining ease of folding through the guided sliding mechanism of the arched members along the guide surfaces.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If existing foldable rocking chairs are designed, then portability is improved, but folding and unfolding takes time and effort

Engineering Contradiction:
ImproveportabilityVSAvoidfolding time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The chair employs dynamic elements including sliders that move along guide surfaces and links that pivot to transform the chair from unfolded to folded state. These dynamic mechanisms enable smooth, guided transitions that reduce folding time and effort while maintaining structural integrity during the transformation.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the frame is made foldable for portability, then storage convenience is improved, but frame stability may be compromised

Engineering Contradiction:
ImproveportabilityVSAvoidframe stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The frame is segmented into modular components including side stands, supports, links, and connecting assemblies that can independently move and reconnect. This segmentation allows the frame to fold compactly for portability while maintaining stability in use through precise geometric relationships and connection mechanisms between segments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple structural elements are combined into integrated assemblies: the side stands combine rocking structures with support systems, the connecting assembly merges link mechanisms with support connections, and the arched members integrate sliders with guide surfaces. These merged structures provide both folding capability and operational stability.

Inventive Principle:
Principle #5Merging (Combining)

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 enables easy folding and unfolding, making the rocking chair frames and chairs portable, convenient for storage and transportation, while maintaining stability and providing smooth rocking motion.

Implementation Method 1

The slider is disposed at the arched member and slidable along the arched member

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

Each of the one or more links has a first end portion pivotally connected to the arched member and a second end portion pivotally connected to a support in the plurality of supports

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Implementation Method 3

The connecting assembly is disposed between the left side stand and the right side stand to connect the left and right side stands and allow the left and right side stands to fold into each other

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentUS12053099B2Foldable rocking chair frame and chair having same
Publication Date: 2024.08.06 CAMPVALLEY XIAMEN LEISURE PRODS
  • US12053099B2 patent drawing
  • US12053099B2 patent drawing
  • US12053099B2 patent drawing

AI summary

A foldable rocking chair frame includes a left side stand and a right side stand. Each stand includes a rocking structure and a plurality of supports interconnected and foldable into each other. The rocking structure includes an arched member, a slider, and one or more links. When the frame is unfolded, the arched member has an end portion disposed at the rear side of the frame and extends from the rear side of the frame toward the front side of the frame. The slider is disposed at the arched member and slidable along the arched member. Each of the one or more links is pivotally connected to the arched member and a support in the plurality of supports. The left and right side stands are connected by a connecting assembly that allows the left and right side stands to fold into each other.