Waterproof Connector Assembly With Integrated Rubber Plug Sealing
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Solution Overview
Problem
Existing connectors lack waterproofness, and adding sealing members increases the number of components.
Innovation Solution
A connector design with a rubber plug featuring cavities and sealing portions to accommodate wires and terminals, along with locking mechanisms to ensure waterproofness without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing member is added to the connector to prevent water intrusion, then waterproofness is improved, but the number of components increases
Solution Approach 1:
The sealing member is integrated into the housing structure, forming a unified component rather than a separate part. The housing includes a sealing portion that directly contacts the insulation coating, eliminating the need for additional sealing components while maintaining waterproof integrity.
Solution Approach 2:
The housing serves multiple functions: it provides structural support, accommodates the terminal and wires, and simultaneously acts as a sealing barrier through its integrated sealing portion. This multi-functionality reduces the overall component count while ensuring waterproof protection.
2Reliability
If multiple sealing components are added to ensure waterproofness, then reliability is improved, but device complexity increases
Solution Approach 1:
The sealing function is merged into the housing structure itself. The housing includes a sealing portion that directly contacts the insulation coating of the wires, creating a unified sealing system that eliminates the need for separate sealing components and reduces structural complexity.
3Device complexity
If a rubber plug with integrated sealing features is used, then the number of components is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The rubber plug utilizes the elastic properties of rubber material to achieve sealing. The rubber plug includes an insertion portion that elastically deforms to contact and seal around the terminal, providing effective sealing through material flexibility rather than precise geometric tolerances, thus reducing manufacturing precision requirements.
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
Provides a waterproof connector with a simplified configuration by using a rubber plug with integrated sealing and locking features, reducing the number of components and insertion forces.
Implementation Method 1
a first sealing portion disposed on one side in the first direction with respect to the terminal to seal an outer peripheral surface of the first insulation coating and a second sealing portion disposed on the other side in the first direction with respect to the terminal to seal an outer peripheral surface of the second insulation coating
Data Source
AI summary
A connector is connected to a second wire and includes a first wire, a terminal, a rubber plug, and a housing for accommodating the rubber plug. The first wire includes a first core wire and a first insulation coating covering the first core wire. The second wire includes a second core wire and a second insulation coating covering the second core wire. The terminal includes a first connecting portion to be connected to the first core wire and a second connecting portion to be connected to the second core wire. The rubber plug is formed with a cavity extending in a first direction, the terminal, the first wire and the second wire being inserted inside the cavity.