Electronic Cigarette Pneumatic Switch Airflow Activation

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Solution Overview

Problem

Conventional electronic cigarettes suffer from accidental activation due to switch buttons and noisy air intake processes, which detract from user experience.

Innovation Solution

An electronic cigarette design integrating an atomization assembly with a battery assembly via a copper threaded ring, featuring a pneumatic switch in the air passage that activates with airflow, eliminating the need for a switch button and incorporating a spiral groove for noiseless air flow, comprising components like a mouthpiece, seal rings, and a battery cell with no external switch button.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a switch button is used for activation, then the electronic cigarette can be controlled to start, but it may be touched by accident causing bad user experience

Engineering Contradiction:
Improveactivation controlVSAvoidaccidental activation
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent removes the switch button from the device entirely. Instead of using a mechanical button that can be accidentally pressed, the invention extracts this problematic component and replaces it with an airflow-activated pneumatic switch that only responds to intentional drawing motions.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs a pneumatic switch that uses airflow pressure to activate the heating element. When the user draws on the device, air flows through the air passage, activates the pneumatic switch, and triggers vaporization. This eliminates the need for mechanical contact switches.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Ease of operation

If air intake process is used for activation, then the electronic cigarette can be controlled to start, but it produces noise

Engineering Contradiction:
Improveactivation controlVSAvoidnoise
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a spiral groove structure in the air passage that creates localized flow patterns. This geometric modification directs airflow in a controlled spiral motion rather than direct linear flow, reducing turbulence and noise generation at the air intake point while maintaining activation functionality.

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 design provides a seamless user experience with no accidental activation and silent operation, as the pneumatic switch is activated by airflow, ensuring the electronic cigarette remains inactive when not in use and operates quietly.

Implementation Method 1

the control panel comprises a pneumatic switch disposed in an air passage of the electronic cigarette; and when in use, air passes through the air passage to activate the pneumatic switch to work

Methodology Applied
Scientific EffectPneumatic switch activation:

Implementation Method 2

The spring (7) and the location rod (6) are consecutively disposed in a location hole of the center pillar (8)

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP3909442B1Electronic cigarette
Publication Date: 2024.10.09 LIU TUANFANG
  • EP3909442B1 patent drawingFigure 1A~1B
  • EP3909442B1 patent drawingFigure 2
  • EP3909442B1 patent drawingFigure 3

AI summary

An electronic cigarette including an atomization assembly and a battery assembly. The atomization assembly is disposed on the battery assembly. The atomization assembly includes a base seat. The battery assembly includes a copper threaded ring and a control panel. The base seat is in threaded connection to the copper threaded ring so that the atomization assembly is integrated with the battery assembly. The control panel includes a pneumatic switch disposed in an air passage of the electronic cigarette. When in use, the air passes through the air passage to activate the pneumatic switch to work.