Waterproof Connector Wire With Overlapped Sheet Member
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Solution Overview
Problem
Conventional connector wires experience detachment of the sheet member from the connector due to elasticity recovery, leading to reduced waterproof properties and reliability over time, especially in environments where high-level waterproofing is not consistently required.
Innovation Solution
The connector wire design features a waterproof member with a wrapping shape that includes an overlapped region where the sheet member's front and back surfaces are contacted, preventing deformation and detachment, and is positioned to cover the connector and electric wire, maintaining the waterproof function without an 'ear part' that could interfere with other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a two-folded sheet member is used to provide waterproof function, then waterproof property is improved, but the sheet member detaches from the connector due to elasticity recovery over time
Solution Approach 1:
The sheet member is divided into multiple segments (first sheet member and second sheet member) that are overlapped and adhered together. This segmentation allows each segment to independently manage elastic recovery forces, preventing the entire waterproof structure from detaching while maintaining the waterproof seal through the overlapping configuration.
2Ease of manufacture
If a simple waterproof function is used to reduce cost, then cost is reduced, but waterproof property is insufficient for long-term use
Solution Approach 1:
The waterproof structure merges the waterproof sealing function with the elastic recovery characteristic into a unified system. The first and second sheet members are overlapped and adhered to form an integrated waterproof assembly that utilizes elastic recovery to maintain continuous contact with the connector, ensuring long-term waterproof performance without requiring complex additional components.
3Reliability
If the sheet member is folded in two with adhesive surfaces inside, then waterproof function is achieved, but deformation occurs in the direction to be separated from each other
Solution Approach 1:
The solution transitions from a two-dimensional folded configuration to a three-dimensional overlapping arrangement. The first and second sheet members are positioned in an overlapping relationship along the longitudinal direction of the connector, creating a multi-layer structure that prevents deformation-induced separation while maintaining the waterproof barrier through the overlapping geometry.
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 effectively maintains the waterproof function of the connector wire over time, simplifies operations such as mounting and transportation, and reduces the influence on the lock arm's operability, ensuring reliable performance and ease of use.
Implementation Method 1
using the connector wire for a long time can cause a detachment of the sheet member from the connector due to a phenomenon that the sheet member recovers its original shape by its own elasticity (so-called elasticity recovery)
Data Source
AI summary
An electric wire with connector includes: an electric wire; a connector having a housing chamber to house an electric terminal provided at an end of the electric wire, the housing chamber opening on an end surface of the connector; and a waterproof member to cover the housing chamber. The waterproof member includes a sheet member having a width extending from the end surface of the connector as a reference position toward both of the connector and the electric wire. The sheet member has a wrapping shape winding around in a manner to have an overlapped region of the a front surface of one end of the sheet member and a back surface of the other end of the sheet member. The front surface and the back surface are contacted each other at the overlapped region. An inner peripheral surface of an end part of the waterproof member near the connector is contacted to an outer peripheral surface of the connector, and at least part of an inner peripheral surface of the other end part of the waterproof member near the electric wire is contacted to an outer peripheral surface of the electric wire.