High-Voltage Connector Assembly With Shielded Waterproof Fastening
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Solution Overview
Problem
Existing connectors for high-voltage electrical circuits in automobiles lack waterproof and electromagnetic shielding functions due to open mounting holes, which increases complexity, production cost, and operation difficulty.
Innovation Solution
A connection assembly featuring a threaded fastener with an insulation member and a conductive plug that blocks the mounting hole, providing electromagnetic shielding, and an elastic sealing sleeve for waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal cover is set on the housing to close and seal the mounting hole for waterproof and electromagnetic shielding, then waterproof and electromagnetic shielding functions are achieved, but the complexity of the housing increases and production cost and operation difficulty increase
Solution Approach 1:
The patent merges the mounting hole cover with the housing structure by forming an elastic sealing ring directly on the inner wall of the mounting hole. This integration eliminates the need for separate metal covers while maintaining waterproof and electromagnetic shielding functions, thereby reducing housing complexity and production cost.
Solution Approach 2:
The elastic sealing ring serves multiple functions simultaneously: it seals the mounting hole for waterproofing, provides electromagnetic shielding, and allows the mounting hole to remain open for tool access during operation. This multi-functionality resolves the contradiction by achieving protection without requiring a separate cover structure.
2Reliability
If a metal cover is set on the housing to close and seal the mounting hole for waterproof and electromagnetic shielding, then waterproof and electromagnetic shielding functions are achieved, but production cost increases
Solution Approach 1:
The patent combines the sealing function with the existing housing structure by molding an elastic sealing ring directly onto the inner wall of the mounting hole. This eliminates the need for separate metal cover components and assembly steps, thereby reducing production cost while maintaining waterproof and electromagnetic shielding functions.
3Reliability
If a metal cover is set on the housing to close and seal the mounting hole for waterproof and electromagnetic shielding, then waterproof and electromagnetic shielding functions are achieved, but operation difficulty increases
Solution Approach 1:
The elastic sealing ring design allows the mounting hole to remain open during operation, enabling tool access for tightening and loosening the threaded connecting member. Simultaneously, it provides waterproof and electromagnetic shielding functions when not in use, thereby resolving the contradiction between protection and operational accessibility.
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 solution effectively achieves electromagnetic shielding and waterproofing, simplifying the connector design, reducing production costs, and enhancing operational ease while maintaining electrical connectivity.
Implementation Method 1
a conductive plug connected with the insulation member to allow the threaded fastener to be tightened or loosened by rotating the conductive plug
Implementation Method 2
an elastic sealing sleeve for waterproofing
Implementation Method 3
the insulation member is engaged between the conductive plug and the threaded connecting member and electrically isolating the conductive plug from the threaded connecting member
Data Source
AI summary
A connection assembly, a connector and a connector assembly are disclosed. The connection assembly is used to connect a high-voltage cable and comprises: a threaded fastener for fixedly connecting the high-voltage cable to a mating connection part, the threaded fastener comprising an insulation member; and a conductive plug connected with the insulation member to allow the threaded fastener to be tightened or loosened by rotating the conductive plug. In the present invention, the conductive plug arranged in the mounting hole of the conductive housing can realize the electromagnetic shielding function, and the elastic sealing sleeve sleeved on the conductive plug seals the gap between the conductive plug and the inner wall of the mounting hole and can realize the waterproof function. The insulation member serves to electrically isolate the threaded connecting member from the high voltage cable.