Wire Protector Notch Layout for Emergency Power Cut Access

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Solution Overview

Problem

Existing circuit interrupting devices are complex and difficult to install in easily accessible locations, leading to potential delays in emergency power source interruption.

Innovation Solution

A wire protector that is easily installable and includes a notch for cutting the target wire to quickly interrupt power in emergencies, with a simple structure and low cost.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional circuit interrupting device is used, then the power supply circuit can be interrupted, but the structure becomes complex and installation difficulty increases

Engineering Contradiction:
Improvepower source interruption capabilityVSAvoidcircuit interrupting device structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the essential function of circuit interruption from a complex circuit interrupting device and implements it through a simple wire protector with a notch. Instead of using a complex device with multiple components, the invention isolates the critical wire and provides a dedicated cutting access point, reducing the system to its fundamental elements while maintaining the interruption capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Rather than providing a complex device that actively interrupts the circuit through mechanical or electrical means, the invention inverts the approach by creating a passive structure (wire protector with notch) that enables simple manual cutting. The complexity is removed by allowing direct access to the wire for cutting, reversing the conventional approach of using sophisticated interrupting mechanisms.

Inventive Principle:
Principle #13The other way round (Inversion)

2Reliability

If a conventional circuit interrupting device is used, then the power supply circuit can be interrupted, but installation in easily accessible locations becomes difficult

Engineering Contradiction:
Improvepower source interruption capabilityVSAvoidinstallation accessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The wire protector is segmented to include a specific notch portion that creates localized access to the wire. This segmentation allows the wire to be exposed at a specific point for cutting while the rest of the wire remains protected, enabling the device to be installed in various locations including easily accessible ones without compromising safety or functionality.

Inventive Principle:
Principle #1Segmentation

3Ease of manufacture

If existing wire protectors are replaced with the new design, then cost is suppressed, but the number of parts may increase

Engineering Contradiction:
Improvemanufacturing costVSAvoidnumber of parts
Core Design Contradiction:
Ease of manufactureVSQuantity of substance

Solution Approach 1:

The invention merges the wire protector function with the circuit interruption capability into a single integrated component. The wire protector not only protects the wire but also includes the notch that enables cutting, combining multiple functions into one part and avoiding the need for separate interrupting devices, thereby suppressing cost and reducing part count.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4309959B1Wire protector
Publication Date: 2025.12.10 TOYOTA JIDOSHA KK
  • EP4309959B1 patent drawingFigure 1
  • EP4309959B1 patent drawingFigure 2
  • EP4309959B1 patent drawingFigure 3

AI summary

A wire protector of the present disclosure partially covers a plurality of wires including a cut target wire to be cut in order to interrupt a power source in an emergency and includes a notch that allows the cut target wire to be cut by a tool. The wire protector enables the power source to be quickly interrupted in the emergency while suppressing a cost increase.