Power Interface Snap-Fit Structure for Stable Charging Connections
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Solution Overview
Problem
Existing power interfaces in mobile terminals face reliability issues due to loose connections between the plug body and the plug shell, leading to unstable charging and data transmission.
Innovation Solution
The power interface incorporates a first baffle in the plug shell and a snap-fit flange on the plug body, fixed by a second baffle, to securely anchor the plug body within the plug shell, preventing movement and separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the plug body is simply inserted into the plug shell without additional fixing structures, then the device complexity is reduced, but the connection reliability deteriorates due to loose connections and potential movement
Solution Approach 1:
The fixing mechanism is divided into separate functional elements: the first baffle for initial positioning, the snap-fit flange for engagement, and the second baffle for final securing. This segmentation allows each component to perform its specific function while maintaining overall structural simplicity.
Solution Approach 2:
The snap-fit flange acts as an intermediary element between the plug body and the second baffle. It provides a dedicated engagement interface that mediates the connection, ensuring reliable fixation without requiring complex direct bonding or mechanical fastening between the main components.
2Reliability
If additional fixing structures such as baffles and snap-fit flanges are added, then the connection reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The first baffle and second baffle are integrated into the plug shell as single-piece components, and the snap-fit flange is formed as an integral part of the plug body. This merging eliminates the need for separate fasteners or additional assembly steps, simplifying manufacturing while maintaining the multi-stage fixing functionality.
Solution Approach 2:
The snap-fit flange is designed to automatically engage with the second baffle through elastic deformation and snap-fit action during the assembly process. This self-service mechanism eliminates the need for additional fastening operations, tools, or complex alignment procedures, making the manufacturing process simpler and more efficient.
3Reliability
If the plug body is allowed to move freely in the plug shell, then the ease of operation is improved for insertion and removal, but the connection reliability deteriorates due to unstable charging and data transmission
Solution Approach 1:
The fixing mechanism is designed to be dynamic during insertion, allowing the plug body to move freely until it engages with the baffles. Once engaged, the snap-fit flange transitions to a locked state that prevents movement during charging and data transmission, providing both ease of operation and connection reliability.
Solution Approach 2:
The first baffle is positioned in advance within the plug shell to guide and preliminarily position the plug body during insertion. This preliminary action ensures proper alignment before the snap-fit flange engages with the second baffle, facilitating easy insertion while ensuring stable connection.
Data Source
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AI summary
A mobile terminal, a power adaptor, and a power interface (100) and a manufacturing method therefor. The power interface (100) comprises a plug shell (1), a plug body (2), and a second baffle (3). A first baffle (11) is provided within the plug shell (1). The plug body (2) is provided within the plug shell (1). The plug body (2) is provided with a snap-fit flange (2422). The second baffle (3) is provided within the plug shell (1) and is connected to the plug shell (1). The second baffle (3) is separated from the first baffle (11). The snap-fit flange (2422) is disposed between the first baffle (11) and the second baffle (3)..