Integrated Power-Signal Connector Layout to Prevent Wiring Errors

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Solution Overview

Problem

Existing signal lines for devices such as electrical equipment, electric vehicles, and mechanical control systems require separate power and signal transmission, leading to wiring difficulties, potential damage from errors, and challenges in waterproofing and mass production, especially with traditional connectors.

Innovation Solution

A transmission cable set featuring symmetrical male and female plugs with conductive interfaces and elastic sheets, allowing for quick and secure connection, preventing reverse wiring errors, and facilitating easy assembly and mass production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate power lines and signal lines are configured, then power transmission and signal transmission can be achieved independently, but wiring complexity increases and the risk of wiring errors increases

Engineering Contradiction:
Improvewiring error preventionVSAvoidwiring complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines power transmission and signal transmission into a single integrated transmission cable system. The cable includes both power conductors and signal conductors within the same insulation layer, allowing simultaneous transmission of both power and signals through one cable rather than requiring separate cables for each function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent employs asymmetric connector design where the male and female connectors have non-symmetrical contact arrangements. The signal contacts and power contacts are positioned at different locations and orientations, creating a keyed connection that prevents incorrect wiring through physical incompatibility of mismatched configurations.

Inventive Principle:
Principle #4Asymmetry

2Object-affected harmful factors

If traditional waterproof connectors with special mechanisms are used, then waterproof performance is achieved, but manufacturing complexity increases and mass production becomes difficult

Engineering Contradiction:
Improvewaterproof performanceVSAvoidmass production capability
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent uses an insulation layer that extends beyond the connector contacts to form a protective covering. This insulation layer acts as a waterproof barrier, sealing the connection interface without requiring complex mechanical waterproofing mechanisms such as buckles or special sealing structures.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The connector is designed with modular components including the insulation layer, metal shell, and contact elements that can be manufactured separately and assembled. This segmentation allows each component to be optimized for its specific function while simplifying the overall manufacturing process and enabling easier mass production.

Inventive Principle:
Principle #1Segmentation

3Adaptability or versatility

If additional signal lines or power lines are added through wiring, then transmission requirements are met, but construction difficulty increases and equipment may be damaged due to wiring errors

Engineering Contradiction:
Improvetransmission capabilityVSAvoidconstruction difficulty
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The transmission cable is designed with multiple conductors that can simultaneously carry power and various signal types. The cable structure supports both power transmission and data communication functions within a single integrated system, eliminating the need for separate wiring for different transmission requirements.

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

Solution Approach 2:

The cable is pre-configured with insulated conductors arranged in specific patterns before connection. The insulation layers and conductor arrangements are established during manufacturing, eliminating the need for complex field wiring and reducing the risk of construction errors during installation.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3667835B1A transmission line set
Publication Date: 2025.09.03 KUNSHAN JUNLEI ELECTRONICS CO LTD
  • EP3667835B1 patent drawingFigure 1A~1B
  • EP3667835B1 patent drawingFigure 1C~2A
  • EP3667835B1 patent drawingFigure 2B~2C

AI summary

A transmission line set for power transmission or signal transmission, comprising: a pair of male plug transmission lines, having a first protruding portion and a second protruding portion to form a pair of male plugs, the first protruding portion being disposed at a center of the pair of male plugs, the second protruding portion being in a ring type, a third groove in a ring-shape formed between the first protrusion potion and the second protruding portion, the first protruding portion having upper and lower surfaces, each configured with at least two upper conductive interfaces and at least two lower conductive interfaces, the at least two upper conductive interfaces and the at least two lower conductive interfaces being symmetrically conductive with each other at opposite angles; and a pair of female plug transmission lines, having a third protruding portion and a fourth protruding portion to form a pair of female plug, the third protruding portion forming a first groove in a ring type, the first groove being located at a center of the pair of female plugs, a fourth protruding portion formed in a ring shape and a second recess formed between the fourth protruding portion and the third protrusion, the third protruding portion having upper and lower surfaces, each configured with at least two upper conductive elastic sheets and at least two lower conductive elastic sheets, the at least two upper conductive elastic sheets and the at least two lower conductive elastic sheets being symmetrically conductive with each other at opposite angles.