Compression Charging Assembly for Stable E-Cigarette Contacts
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Solution Overview
Problem
Existing charging devices for electronic cigarette cases rely on point-contact charging, which may not ensure reliable and secure electrical connections, leading to inefficiencies in charging and potential mechanical issues with contact durability.
Innovation Solution
A compression charging device is developed, featuring a cylindrical positive electrode cover, a drum-shaped filter holding seat, and a negative spring mechanism that compresses to establish electrical connections between the cigarette case and set, utilizing stannum solder and press riveting for secure connections, with a charging insulation sleeve and fixing sleeve for insulation and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If point-contact charging is used, then the device structure is simple, but the electrical connection reliability is poor
Solution Approach 1:
The charging device is divided into separate positive and negative contact components. The positive contact includes a positive electrode column, positive spring, and positive electrode cover, while the negative contact includes a negative spring and charging base. This segmentation allows each contact to be independently optimized for reliability while maintaining manageable complexity.
Solution Approach 2:
The charging device uses elastic springs (positive spring and negative spring) that can dynamically compress and expand. When the cigarette case is closed, the springs compress to establish firm electrical contact. When opened, they expand to release the cigarette set. This dynamic mechanism ensures reliable electrical connection during charging while enabling easy disconnection.
2Reliability
If compression charging mechanism is used, then electrical connection reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The manufacturing process is segmented into modular assembly steps. Each spring contact assembly (positive and negative) is prepared separately with its corresponding insulation components, then assembled into the charging case. This modular approach improves manufacturing ease while maintaining the reliable compression charging mechanism.
Solution Approach 2:
Insulation components (insulation ring, insulation fixed seat, insulation fixed column) are introduced as intermediary elements between conductive parts. These intermediaries prevent unintended electrical connections while organizing the compression mechanism, simplifying the manufacturing process by providing clear assembly guides and reducing the risk of manufacturing errors.
3Duration of action of stationary object
If point-contact charging is used, then the device is easy to operate, but the contact durability is poor
Solution Approach 1:
The elastic springs provide dynamic compression force that maintains firm electrical contact during charging. The positive spring compresses between the positive electrode column and charging spring seat, while the negative spring compresses between the charging base and the cigarette set. This dynamic compression significantly improves contact durability compared to static point-contact charging.
Solution Approach 2:
The charging mechanism merges electrical conduction function with mechanical bouncing/ejection function. The same compression springs that establish reliable electrical contact also provide the force to eject the cigarette set when the case is opened. This merging improves contact durability without adding separate mechanisms, maintaining ease of operation.
4Productivity
If compression charging mechanism with insulation components is used, then charging efficiency is improved, but the device complexity increases
Solution Approach 1:
Insulation components (insulation ring, insulation fixed seat, insulation fixed column) serve as intermediaries that organize the compression charging mechanism and prevent unintended electrical connections. These components enable reliable multi-point compression charging without proportionally increasing complexity, as they integrate seamlessly into the existing spring-contact structure.
Solution Approach 2:
The compression mechanism with insulation components achieves multiple functions: establishing reliable electrical contact, preventing short circuits, and enabling easy ejection. This multi-functionality improves charging efficiency (productivity) while the integrated design prevents excessive complexity increase.
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 compression mechanism ensures reliable electrical connections during charging and easy disconnection when the case is opened, providing a durable and efficient charging solution with the dual function of electrical conduction and mechanical bouncing for easy ejection of the cigarette set.
Implementation Method 1
a positive spring 6, wherein the positive spring 6 is located inside a spring cap 3, the positive spring 6 has an upper portion connected to a lower surface of the positive electrode column 2 and a lower portion connected to a charging spring seat 4
Implementation Method 2
When the cigarette set is placed into the cigarette case, the cigarette case cover compresses the cigarette set. The positive spring 6 is in a compression state
Implementation Method 3
The charging spring seat 4 and the negative spring 5 are connected to the PCB 8 by a stannum solder
Implementation Method 4
The positive electrode cover 1 is connected to the positive electrode column 2 through a press riveting. The spring cap 3 is connected to the charging spring seat 4 through a press riveting
Implementation Method 5
a charging insulation sleeve 7 located between the charging spring seat 4 and the negative spring 5; and an insulation fixing sleeve 10 located between the filter holding seat 9 and the charging base 11
Data Source
Figure 1~2
Figure 3
AI summary
A compression charging device includes a cigarette case charging part and a cigarette set charging part. The cigarette case charging part includes a positive electrode cover (1), a positive spring (6), a negative spring (5), a charging insulation sleeve (7), and a PCB (8). The cigarette set charging part includes a filter holding seat (9), a charging base (11), and an insulation fixing sleeve (10). The compression charging device is configured for cigarette set charging. The negative spring and the positive spring have a double function of electrical conduction and bouncing.