Waterproof Electric Connector With Elastic Sealing And Coupling Cap
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Solution Overview
Problem
Conventional waterproof electric connectors are prone to separation under external pressure and fail to maintain water-tightness, especially in environments with moisture, leading to safety concerns such as short circuits and electric shocks.
Innovation Solution
A waterproof electric connector design featuring inwardly narrowing wire entry ends with packings and finishing caps that press packings onto wires, coupled with a coupling cap and elastic packings to secure connections and prevent water infiltration, using ring-shaped protrusions and symmetrical wire movement prevention means to maintain connection and water-tightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional simple insertion coupling method is used, then ease of operation is improved, but connection reliability deteriorates due to separation under external pressure
Solution Approach 1:
The coupling mechanism is divided into multiple functional segments: the coupling cap with pressing members for securing contact terminals, the elastic packing for waterproofing, and the wire entry end with narrowing inner circumference for mechanical interlocking. Each segment performs a specific function, collectively ensuring both ease of operation and connection reliability.
Solution Approach 2:
The pressing members are pre-configured to apply pressing force to the contact terminals upon insertion, preventing separation before external pressure can act. The elastic packing is pre-installed to provide preliminary waterproof sealing, and the narrowing inner circumference of the wire entry end creates preliminary mechanical resistance against pull-out forces.
2Object-affected harmful factors
If waterproof caps are simply used to surround plugs, then water protection is improved, but structural defects remain allowing water infiltration between plug body and wire
Solution Approach 1:
The elastic packing acts as a flexible sealing element that conforms to the irregular surfaces between the coupling cap, housing, and wires. This flexible membrane provides reliable waterproofing where rigid structures would fail, preventing water infiltration at the critical interface between the plug body and wire entry points.
Solution Approach 2:
The waterproof structure employs nested sealing: the elastic packing is nested within the coupling cap and housing assembly, creating multiple concentric sealing zones. This nested configuration ensures that water must penetrate through multiple barriers, significantly enhancing water-tightness while maintaining a compact structure.
3Ease of operation
If conventional outlets are open at first ends for plug insertion, then ease of operation is improved, but impurity infiltration worsens
Solution Approach 1:
The wire entry ends are pre-configured with narrowing inner circumferences that automatically engage with the coupling cap during normal insertion operations. This preliminary mechanical interlocking ensures that when plugs are inserted for ease of operation, the waterproof and impurity-resistant sealing is simultaneously activated without requiring additional user actions.
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
Prevents water infiltration and connection release due to external pressure, ensuring reliable operation and safety by maintaining water-tightness between connectors and wires, even in moist environments.
Implementation Method 1
a first elastic packing configured to be provided in a portion where the coupling cap and a front end of the second housing come into contact with each other, and to maintain water-tightness
Implementation Method 2
first and second pressing members configured to press the first and second packings in a direction toward surfaces along which the inner circumferences of the first and second wire entry ends come into contact with the first and second wires
Data Source
AI summary
The present invention provides a waterproof electric connector, including: first and second connectors configured such that first and second wire entry ends are provided at the first side ends of first and second housings; first and second packings configured to be inserted into the inner circumferences of the first and second wire entry ends; first and second finishing caps formed as blocking components which are coupled to the outer circumferences of the first and second wire entry ends; a coupling cap configured such that one side end thereof is coupled to the outer circumference of one side end of the second housing; and a connection packing part configured to include a first elastic packing and a second elastic packing.