Integrated Metal Shell for Drop-Resistant Rechargeable E-Cigarettes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The shell of existing rechargeable electronic cigarettes is prone to disconnection and damage upon falling, rendering the device unusable due to its three-section structure, which lacks durability and strength.
Innovation Solution
The shell is integrally molded from metal with specific design features such as a protrusion and mounting groove, enhanced thickness, and arc-shaped transitions to enhance durability and grip, preventing disconnection and damage during falls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the shell is made as a three-section structure with shell, housing, and bottom cover, then the manufacturing complexity is reduced and assembly is easier, but the structural strength and durability are insufficient causing disconnection upon falling
Solution Approach 1:
The patent merges the shell, housing, and bottom cover into a single integrated shell body made of metal material. This unified structure eliminates the joints and connection points between separate components, preventing disconnection during drops while maintaining manufacturability through metal forming processes.
2Ease of operation
If the shell is made as a three-section structure, then the ease of assembly is improved, but the reliability is reduced due to potential disconnection and damage during falls
Solution Approach 1:
The patent combines multiple components into one integrated shell body, eliminating assembly steps while ensuring reliability. The single-piece metal construction removes all potential failure points at connection interfaces, guaranteeing structural integrity during impact events.
3Strength
If the shell body thickness is increased to enhance strength, then the impact resistance is improved, but the weight and material consumption increase
Solution Approach 1:
The patent utilizes metal material with inherent high strength-to-weight ratio to achieve impact resistance without excessive weight gain. The metal formulation provides the necessary structural strength while maintaining acceptable weight characteristics for a handheld device.
Solution Approach 2:
The patent implements variable thickness design with specific thickness ranges (0.6-1.0mm for side walls, 0.8-1.2mm for bottom) optimized for different structural requirements. This localized quality approach ensures adequate impact resistance at critical areas while minimizing overall weight.
Data Source
AI summary
This invention is a shell of a rechargeable electronic cigarette, including a shell body integrally molded and made of metal. The shell body is vertically extended. The shell body is shaped as a result of a plurality of stamping and stretching. A mounting groove of a bottom cover and a protrusion protruding into the mounting cavity that correspond to each other are formed at the middle of the bottom of the shell body by upward counter-stamping. A charging hole and a screw positioning hole are also disposed on the bottom surface of the mounting groove of the bottom cover, respectively. A switch and a power display hole are also disposed on the side wall of the shell body.