Bent Sheet Waterproof Cover for Compact Joint Connectors

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Solution Overview

Problem

Existing joint connectors face challenges in achieving waterproofing while minimizing the size of the waterproof member.

Innovation Solution

A wiring member design featuring a waterproof member formed by bending a sheet material to cover the connector housing and electrical wires, with specific configurations to minimize size and enhance sealing, including direct contact fixation and drainage features.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a waterproof member is provided to cover the connector, then waterproofing is achieved, but the size of the waterproof member increases

Engineering Contradiction:
ImprovewaterproofingVSAvoidsize of waterproof member
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The sheet material is divided into multiple bent portions (first bent portion, second bent portion, third bent portion) that segmentally cover different surfaces of the connector housing (front surface, upper surface, side surface). This segmentation allows the waterproof member to conform to the connector's geometry while minimizing material usage and overall size.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The sheet material is bent in multiple dimensions to create a three-dimensional waterproof cover that adapts to the connector housing's outer shape. By bending the material along different axes (front, upper, and side surfaces), the waterproof member achieves comprehensive coverage without requiring excessive material volume.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If the sheet material is completely connected, then structural integrity is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The sheet material has different connection states at different locations: it is connected at the first and second edge portions for structural stability, but separated at the third edge portion to facilitate manufacturing and assembly. This local differentiation of connection quality optimizes both structural integrity and ease of manufacture.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The edge portions of the sheet material are segmented into connected regions (first and second edge portions) and a separated region (third edge portion). This segmentation allows the waterproof member to maintain structural integrity where needed while enabling simpler manufacturing and assembly processes at other locations.

Inventive Principle:
Principle #1Segmentation

3Reliability

If the waterproof member covers all surfaces, then waterproofing is enhanced, but the device complexity increases

Engineering Contradiction:
ImprovewaterproofingVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A single sheet material serves multiple functions: it covers the front surface, upper surface, and side surface of the connector housing, and also covers the electrical wires extending from the back surface. This multi-functional design achieves comprehensive waterproofing without requiring multiple separate components, thereby reducing device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The waterproof member integrates coverage for both the connector housing and the electrical wires into a single bent sheet structure. By merging these coverage functions into one component, the design simplifies the overall structure while maintaining enhanced waterproofing across all surfaces.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12463373B2Wiring member
Publication Date: 2025.11.04 SUMITOMO WIRING SYSTEMS LTD
  • US12463373B2 patent drawing
  • US12463373B2 patent drawing
  • US12463373B2 patent drawing

AI summary

A wiring member includes a plurality of electrical wires, a connector, and a waterproof member. The waterproof member is formed by bending the sheet material to cover a region including a front surface, an upper surface, and a side surface continuously formed in the connector housing. The sheet material which has not been bended is connected in a part corresponding to two edge portions of any of an edge portion between the front surface and the upper surface, an edge portion between the front surface and the side surface, and an edge portion between the upper surface and the side surface, and is separated in a part corresponding to a remaining one edge portion.