Cable Connector Insulator Embedding Terminals and Cables

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Solution Overview

Problem

Conventional cable connectors are prone to short circuits due to inadequate electrical insulation and water infiltration, which existing technologies have not effectively addressed.

Innovation Solution

A cable connector design featuring an insulating body with embedded electrical terminals and cables, filled with an insulator, a mounting plate with circular holes, and a capacitor for electromagnetic shielding, made from moulded plastic with a hollow frame and covers to prevent short circuits and water ingress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional cable connectors are used with basic insulation structure, then the device complexity is low, but the reliability is poor due to short circuits and water infiltration

Engineering Contradiction:
Improveelectrical insulation reliabilityVSAvoidconnector structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connector is divided into distinct functional components: a hollow frame structure, a separate insulator filling the internal cavity, mounting plates for cable positioning, and capacitor elements for electromagnetic shielding. This segmentation allows each component to optimize its specific function while collectively achieving high reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insulator is nested within the hollow frame structure, with cables and electrical terminals embedded within the insulator material. The capacitor elements are integrated within the same internal cavity. This nested arrangement maximizes space utilization and ensures comprehensive protection of electrical components.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If adequate electrical insulation and water protection are implemented, then the reliability improves, but the manufacturing complexity increases

Engineering Contradiction:
Improveprotection against short circuitsVSAvoidmanufacturing process simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The insulator serves multiple functions simultaneously: it provides electrical insulation between conductive elements, acts as a barrier against water infiltration, and serves as the matrix for embedding cables and terminals. This merging of functions into a single component simplifies the manufacturing process while maintaining high reliability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connector employs composite construction combining the hollow frame structure with the insulator material filling, creating a composite assembly that leverages the advantages of different materials to achieve both protection and manufacturability.

Inventive Principle:
Principle #40Composite materials

3Reliability

If electromagnetic shielding elements are added to prevent interference, then the reliability improves, but the device complexity increases

Engineering Contradiction:
Improveelectromagnetic interference protectionVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The capacitor elements serve dual purposes: they provide electromagnetic shielding to protect against interference, and simultaneously act as electrical connection elements within the circuit. This self-service approach eliminates the need for separate shielding components, reducing overall device complexity while maintaining reliability.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3188315B1Cable connector
Publication Date: 2022.09.21 JOHNSON ELECTRIC INTERNATIONAL AG
  • EP3188315B1 patent drawingFigure 1
  • EP3188315B1 patent drawingFigure 2
  • EP3188315B1 patent drawingFigure 3

AI summary

A cable connector is provided which includes an insulating body (11) comprising a frame (13) which defines a region (131) therein; a plurality of electrical terminals (14, 15) fixed to the insulating body (11) and extending into the region (131); and a plurality of cables (1, 2) electrically connected to the electrical terminals (14, 15) respectively in the region (131). The region (131) is filled with an insulator (18) to embed the electrical terminals (14, 15) and the cables (1, 2). The cable connector has a relatively high reliability.