Waterproof Electrical Connector with Inclined Metal Shell
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Solution Overview
Problem
Conventional electrical connectors with a waterproof function cannot be reduced in height and size while maintaining effective waterproofing, as the sealing member cannot achieve the necessary bonding pressure with the enclosure surface.
Innovation Solution
An electrical connector design featuring a metal shell with an inclined surface and a sealing member protruded forward, allowing the sealing member to make pressure contact with the enclosure, thereby preventing liquid entry and enabling size and height reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sealing member is provided on the housing, then waterproof function is achieved, but height and size cannot be reduced
Solution Approach 1:
The sealing member is extracted from the housing and relocated to the metal shell. This allows the sealing function to be separated from the housing structure, enabling the housing to be reduced in height while the metal shell with its inclined surface provides the necessary bonding area for the sealing member to contact the enclosure.
2Length of moving object
If the sealing member is provided on the metal shell, then height and size are reduced, but bonding pressure with enclosure surface cannot be achieved
Solution Approach 1:
The metal shell is designed with an inclined surface that extends in the radial direction from the rear surface. This dimensional change transforms the bonding interface from a simple flat surface to an extended inclined plane, allowing the sealing member to contact the enclosure over a larger area and achieve sufficient bonding pressure while maintaining compact height.
3Length of moving object
If the sealing member is provided on the metal shell without projected portion, then size is reduced, but positive waterproof effects cannot be achieved
Solution Approach 1:
The sealing member is designed with a projected portion that protrudes forward from the metal shell before insertion. This preliminary positioning ensures that the sealing member is already in contact with the enclosure surface upon insertion, establishing the waterproof seal in advance and preventing liquid ingress through the attachment portion.
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 achieves both reduced size and height and positive waterproof effects by ensuring the sealing member is in pressure contact with the enclosure, effectively preventing liquid ingress.
Implementation Method 1
the projected portion of the sealing member protruded frontward from the metal shell is in pressure contact with the enclosure
Data Source
AI summary
A waterproof attachment portion to an enclosure is formed to implement the reduction in height, reduction in size, and positive waterproof effects at the same time. An electrical connector includes: an electrically conductive contact; an insulating housing for holding the contact; a metal shell which includes an opening opened frontward to allow a mating connector to be inserted therein and accommodates the housing; and a sealing member which is provided on the outer peripheral surface of the metal shell and protruded frontward from the metal shell.