Cable Cover Curved Supporting Portion

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Solution Overview

Problem

Existing cable covers apply excessive load to electrical wires due to the shape of the protection rib, which can cause pinching and wire breakage, especially under tensile force.

Innovation Solution

A cable cover design featuring a pair of divided bodies with a supporting portion that extends as a curved surface along the bent passage to support the inward portion of the cable bend, preventing pinching and reducing stress on the cable during assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an electrical wire protection rib is provided to prevent wire sandwiching, then wire protection is improved, but large load is applied to the electrical wire when it contacts the rib

Engineering Contradiction:

Improvewire protectionVSAvoidload on electrical wire

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The supporting portion is formed with a curved surface that follows the natural bend of the cable, allowing the cable to rest on the curved surface without sharp angles or protrusions that would concentrate stress. This curvature distributes the contact force along the cable surface, reducing peak loads while maintaining protection.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The supporting portion is strategically positioned to provide support only where the cable naturally bends, rather than using a uniform protection structure throughout. This localized approach ensures protection is applied precisely where needed without creating unnecessary contact points that could apply load to the wire.

Inventive Principle:

Principle #3Local quality

2Reliability

If a protection rib protrudes toward the bent portion of the wire, then wire sandwiching is prevented, but pinching occurs during assembly under tensile force

Engineering Contradiction:

Improveprevention of wire sandwichingVSAvoidpinching of cable

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The curved surface of the supporting portion eliminates sharp protrusions that would pinch the cable. Instead of a rib sticking out at right angles, the surface gently follows the cable's bend, allowing the cable to pass through assembly without being pinched even when tensile forces are present.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

Instead of making the protection structure protrude outward to prevent sandwiching, the supporting portion is designed to follow the cable's natural path and provide support from within the cable passage. This inverted approach prevents sandwiching by guiding the cable properly rather than blocking it with a protrusion.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS10530136B2Cable cover

Publication Date: 2020.01.07 JST MFG CO LTD

AI summary

A cable cover of this invention is used for guiding the orientation of a cable that extends out from a connector. This cable cover includes a pair of divided bodies, a cable passage, and a supporting portion. The pair of divided bodies have a pair of joining faces that are to be joined to each other. The cable passage includes a bent passage portion for housing a bent portion of the cable. The supporting portion extends as a curved surface along the forward direction of the cable in the bent passage portion, and is configured to be able to support an inward portion of the bend in the bent portion.