Electronic Cigarette Assembly for Leak-Controlled Liquid Refill

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Solution Overview

Problem

Existing disposable electronic cigarettes have a small liquid capacity and short usage time, failing to meet user needs for extended usage.

Innovation Solution

An electronic cigarette assembly comprising an electronic cigarette body with a storage chamber and an expandable tobacco liquid bottle, where a movable part opens liquid passing holes upon assembly, allowing tobacco liquid to be absorbed by liquid absorbing cotton, and includes sealing rings and guiding cotton to prevent leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If an expanded tobacco liquid bottle is added to increase liquid capacity, then the service life is prolonged, but the device complexity increases

Engineering Contradiction:
Improveservice lifeVSAvoiddevice complexity
Core Design Contradiction:
Duration of action of moving objectVSDevice complexity

Solution Approach 1:

The expanded tobacco liquid bottle is sleeved on the outer side of the storage chamber, with the storage chamber placed inside the perforating hole of the bottle. This nested structure allows the bottle to expand liquid capacity while maintaining a compact form factor and avoiding excessive complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The liquid storage system is divided into two independent parts: the original storage chamber with first liquid absorbing cotton, and the expandable bottle with second liquid absorbing cotton. This segmentation allows flexible capacity expansion while keeping each component relatively simple in structure.

Inventive Principle:
Principle #1Segmentation

2Quantity of substance

If liquid passing holes are opened for refilling, then the liquid capacity is increased, but liquid leakage may occur

Engineering Contradiction:
Improveliquid capacityVSAvoidliquid leakage
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The movable part preliminarily covers the second liquid passing holes to prevent leakage during transport and storage. When the bottle is assembled with the electronic cigarette body, the movable part automatically moves to open the holes, allowing liquid to flow only when intended.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The first liquid absorbing cotton acts as an intermediary between the first liquid passing hole and the storage chamber interior, controlling liquid flow. Similarly, the second liquid absorbing cotton controls flow from the bottle, preventing uncontrolled leakage while enabling refilling.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Quantity of substance

If the storage chamber is opened for refilling, then the liquid capacity can be increased, but the ease of operation deteriorates

Engineering Contradiction:
Improveliquid capacityVSAvoidease of operation
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The expanded tobacco liquid bottle is designed as a self-contained refillable unit that can be attached to the electronic cigarette body without opening the storage chamber. The bottle automatically connects to the liquid passage system through the movable part mechanism, allowing users to refill liquid simply by attaching the bottle rather than disassembling the device.

Inventive Principle:
Principle #25Self-service

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 solution increases the tobacco liquid capacity and prolongs the service life of the electronic cigarette by allowing for refilling without opening the storage chamber, while preventing liquid leakage.

Implementation Method 1

first liquid absorbing cotton for storing tobacco liquid

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Data Source

PatentEP4595791A1Electronic cigarette assembly
Publication Date: 2025.08.06 PAX INT LTD
  • EP4595791A1 patent drawingFigure 1
  • EP4595791A1 patent drawingFigure 2
  • EP4595791A1 patent drawingFigure 3

AI summary

An electronic cigarette assembly includes an electronic cigarette body (200) and an expanded tobacco liquid bottle (100). The electronic cigarette body includes a storage chamber (222). The storage chamber is provided with first liquid absorbing cotton (223) and a first liquid passing hole (226). The expanded tobacco liquid bottle stores tobacco liquid and is provided with second liquid passing holes (125) and a movable part (150). When the expanded tobacco liquid bottle is not assembled with the electronic cigarette body, the movable part covers the second liquid passing holes to prevent the tobacco liquid from flowing out of the second liquid passing holes. When the expanded tobacco liquid bottle is assembled with the electronic cigarette body, the movable part moves to open the second liquid passing holes, allowing the tobacco liquid to pass through the second liquid passing holes and the first liquid passing hole to be adsorbed by the first liquid absorbing cotton.