Electrical Connector Sealing Structure for Siphon-Resistant Glue Flow
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Solution Overview
Problem
Conventional electrical connectors suffer from reduced air tightness and waterproof performance due to a siphon effect exerted on the sealing glue by a narrow gap between the insulating body and the shielding shell, leading to uneven distribution and potential gaps in the sealing.
Innovation Solution
The electrical connector design includes extension parts with chamfers and reinforcing blocks that reduce the siphon effect, ensuring even distribution of sealing glue by enlarging the gap between the insulating body and the shielding shell, while maintaining structural stability through the use of chamfers and bevels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the gap between the insulating body and shielding shell is reduced to improve structural compactness, then the structural compactness is improved, but the siphon effect on sealing glue is strengthened, causing uneven distribution and reduced air tightness
Solution Approach 1:
The extension part is provided with a chamfer at its lower end, creating a local structural modification that changes the gap geometry from a uniform narrow gap to a tapered gap structure. This local quality change allows the gap width to vary along its length, reducing the siphon effect at the critical sealing region while maintaining overall structural compactness.
Solution Approach 2:
The chamfer introduces a dimensional change by transforming the originally vertical lower end face of the extension part into an inclined surface. This dimensional modification creates a gradual transition in gap width, effectively converting a one-dimensional narrow gap problem into a two-dimensional tapered gap structure that reduces capillary action.
2Reliability
If the gap between the insulating body and shielding shell is enlarged to reduce the siphon effect on sealing glue, then the air tightness is improved, but the structural stability is reduced
Solution Approach 1:
The chamfer provides localized structural support at the lower end of the extension part, reinforcing the gap region without requiring a complete redesign of the overall structure. This localized reinforcement maintains structural stability while allowing the gap to be sufficiently wide to reduce the siphon effect on sealing glue.
3Reliability
If the chamfer is provided at the lower end of the extension part to reduce the siphon effect, then the sealing glue distribution is improved, but the device complexity is increased
Solution Approach 1:
The chamfer is a simple local modification to the extension part geometry rather than a completely new component. This minimal structural change achieves significant improvement in sealing glue distribution by reducing the siphon effect, while adding only minimal complexity to the overall device structure.
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
This design enhances the air tightness and waterproof performance by ensuring even distribution of sealing glue, thereby improving the structural reliability and sealing effectiveness of the electrical connector.
Implementation Method 1
the gap S51' exerts a siphon effect on the sealing glue 50′ which is adjacent to the gap S51′, so a siphon force is applied on the sealing glue 50′
Data Source
AI summary
An electrical connector includes a shielding shell, an insulating body fastened in the shielding shell, and a plurality of contacting terminals. The insulating body has two extension parts protruded rearward from two sides of a rear end of the insulating body, and a covering part connected between two tail ends of the two extension parts and extending downward. The plurality of the contacting terminals are arranged in the insulating body. Each extension part has an upper surface and a lower surface which are opposite to each other. The covering part has an inner wall, an outer wall and two opposite side surfaces. An inner side of a rear end of the lower surface of each extension part slantwise extends inward and downward to form the side surface. A chamfer is formed at a junction between the lower surface and the side surface.