Inhaler Cartridge Cap with Recessed Conductor Reception for Sealing

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Solution Overview

Problem

Existing inhaler cartridges lack a novel structure that effectively seals the tank while allowing for easy assembly and disassembly of components, leading to potential liquid leakage and inefficient aerosol generation.

Innovation Solution

A cartridge design featuring a cap with a seal region and recessed reception portions for conductors, which seals the tank's opening and prevents conductor-induced leakage, while allowing for easy assembly of the heater and liquid holding member, enhancing aerosol generation efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional tank sealing structure is used, then the structure is simple, but liquid leakage occurs and sealing reliability is poor

Engineering Contradiction:
Improvesealing reliabilityVSAvoidcap structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The cap is divided into multiple functional regions: a seal region with a seal rib for liquid-tight sealing, and a reception portion with a recess for receiving the heater assembly. This segmentation allows each region to perform its specific function optimally - the seal region prevents leakage while the reception portion provides structural support and positioning, thereby improving overall sealing reliability without excessive complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different portions of the cap have different structural characteristics tailored to their functions. The seal region features a protruding seal rib with high structural integrity for reliable sealing, while the reception portion has a recessed structure for accommodating electrical components. This local differentiation of structural quality ensures that each area performs its intended function effectively.

Inventive Principle:
Principle #3Local quality

2Reliability

If conductors are exposed on the cap surface, then assembly is simple, but liquid leakage occurs around conductors

Engineering Contradiction:
Improvesealing reliabilityVSAvoidassembly ease
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The reception portion extracts the heater and conductor assembly from the main sealing area by providing a dedicated recessed space. This separation ensures that conductors are contained within the recess and do not interfere with the seal rib's liquid-tight sealing function, preventing leakage around conductors while maintaining assembly simplicity through the integrated recess design.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The reception portion acts as an intermediary structure between the seal region and the heater assembly. It provides a transition zone that accommodates the heater and conductors while maintaining the integrity of the seal region, allowing both sealing reliability and assembly ease to be achieved simultaneously.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If the cap structure is simplified, then manufacturing is easier, but aerosol generation efficiency is reduced

Engineering Contradiction:
Improveaerosol generation efficiencyVSAvoidmanufacturing ease
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The cap is segmented into a seal region and a reception portion, where the reception portion specifically accommodates the heater assembly in a recessed structure. This segmentation enables efficient aerosol generation by providing proper positioning and support for the heater, while the overall cap structure remains relatively simple and easy to manufacture using conventional molding techniques.

Inventive Principle:
Principle #1Segmentation

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 effectively seals the tank, preventing liquid leakage and facilitating easy assembly, resulting in improved aerosol generation and delivery to the user.

Implementation Method 1

a heater arranged to face the liquid holding member... a heater for heating the liquid

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a seal region configured to seal at least part of the space in the tank... the seal region of the cap is configured to seal the opening

Methodology Applied
Scientific EffectSealing: Physical Containment

Data Source

PatentUS11317652B2Cartridge and inhaler
Publication Date: 2022.05.03 JAPAN TOBACCO INC
  • US11317652B2 patent drawing
  • US11317652B2 patent drawing
  • US11317652B2 patent drawing

AI summary

To provide an inhaler cartridge and an inhaler including a novel structure.Provided is a cartridge for an inhaler with a tank capable of containing a liquid. The cartridge includes a cap configured to seal at least part of a space in the tank. The cap includes a seal region configured to seal at least part of the space in the tank, and a reception portion that receives a conductor constituting part of an electric path between a heater for heating the liquid and the battery portion. The reception portion is provided on an outer side of the seal region.