Inflatable Doll Pneumatic Segmentation for Dynamic Movement

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Solution Overview

Problem

Conventional inflatable dolls lack dynamic movement, becoming unattractive to passersby over time.

Innovation Solution

An inflatable doll with a body, expandable members, and an air blower assembly, featuring a first air blower for inflation and multiple second air blowers for controlled deformation, along with a controller, microphone, speech recognition servers, and a speaker for interactive movement and sound generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If conventional inflatable dolls are used with static structure, then manufacturing cost is low and structure is simple, but dynamic movement capability is lacking and attractiveness decreases over time

Engineering Contradiction:
Improveattractiveness durationVSAvoidstructure complexity
Core Design Contradiction:
Duration of action of moving objectVSDevice complexity

Solution Approach 1:

The inflatable doll is divided into multiple independent inflatable sections (head, torso, limbs, etc.) that can be inflated or deflated independently through separate air channels and control valves, enabling segmented movement and dynamic poses

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The doll incorporates dynamic control systems including air pumps, control valves, and sensors that enable real-time adjustment of inflatable section volumes, allowing the doll to change poses, wave, dance, and interact with users throughout the day

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If multiple air blowers and control systems are added to achieve dynamic movement, then movement capability is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improvemovement controlVSAvoidair blower assembly complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The air blowers are designed to serve multiple functions: inflating different body sections, creating movement patterns, and maintaining structural support, reducing the need for separate actuators for each function

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses pneumatic control through air pressure differential to achieve bidirectional movement (inflation and deflation) of expandable members, eliminating the need for complex mechanical actuators and reducing overall system complexity

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Duration of action of moving object

If expandable members are added for independent movement of body portions, then dynamic movement is achieved, but device complexity and air consumption increase

Engineering Contradiction:
Improvedynamic movement capabilityVSAvoidair consumption
Core Design Contradiction:
Duration of action of moving objectVSUse of energy by moving object

Solution Approach 1:

The air blowers operate in periodic cycles, inflating expandable members to create movement and then allowing controlled deflation, rather than maintaining continuous inflation, thereby reducing overall air consumption while preserving dynamic movement capability

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

Different body sections are inflated to different pressure levels and volumes based on their specific movement requirements, optimizing air distribution and reducing total air consumption compared to uniform inflation of the entire doll

Inventive Principle:
Principle #3Local quality

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 doll achieves dynamic movements and interactive responses, enhancing its attractiveness by moving different portions independently and engaging with users through voice recognition and sound generation.

Implementation Method 1

a first air blower configured to introduce air into the body to inflate the body and the expandable members

Methodology Applied
Scientific EffectAir pressure: Pressure Increase

Implementation Method 2

Each second air blower is configured to direct air out of one corresponding expandable member intermittently, so that the expandable members are deformed to move the body

Methodology Applied
Scientific EffectAir pressure differential: Pressure Gradient

Data Source

PatentEP4461394B1Inflatable doll
Publication Date: 2025.12.17 COMIN INT INC
  • EP4461394B1 patent drawingFigure 1
  • EP4461394B1 patent drawingFigure 2
  • EP4461394B1 patent drawingFigure 3~4

AI summary

The present disclosure provides an inflatable doll, which includes a body having a first air inlet, a plurality of expandable members received in the body and connected with the body, and an air blower assembly. Each expandable member defines a second air inlet. The air blower assembly includes a first air blower arranged adjacent to the first air inlet and a plurality of second air blowers received in the body and communicated with second air inlets. The first air blower is configured to introduce air into the body to inflate the body and the expandable members. Each second air blower is configured to direct air out of one corresponding expandable member intermittently, so that the expandable members are deformed to move the body.