Rounded Cable Tie Cut via Curved Blade Geometry

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Solution Overview

Problem

Severed cable ties often have sharp edges that can cause abrasive damage to clothing and injuries during maintenance or repair in systems with complex wiring schemes, as existing cable management solutions do not adequately address the safety concerns of edge sharpness.

Innovation Solution

A cable tie severing tool with a nosepiece assembly and blade member that produces a rounded cut on the serrated portion of a cable tie, ensuring the cut is free of sharp edges and maintaining sufficient serrations for secure looping, using a blade member with a sharp curve cutting edge and a nosepiece assembly for precise alignment and secure engagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a cable tie is severed with a conventional cutting tool, then the cable tie is separated into two parts, but sharp edges are created on the severed ends

Engineering Contradiction:

Improveease of severingVSAvoidsharp edges causing abrasive damage

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The cutting blade is designed with a curved cutting edge that produces a rounded cut on the cable tie. This curvature transforms the sharp linear cut into a rounded profile, eliminating sharp edges while maintaining effective severing capability. The rounded cut profile is the direct result of applying spheroidality principle to the cutting geometry.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Length of moving object

If the cut is made closer to the head portion, then less serrated portion remains, but the loop may become insecure

Engineering Contradiction:

Improvelength of serrated portion remainingVSAvoidsecurity of loop

Core Design Contradiction:

Length of moving objectVSReliability

Solution Approach 1:

The nosepiece assembly incorporates a vertical rail and channel mechanism that replaces manual measurement and positioning with a precise mechanical guidance system. This ensures the blade consistently cuts at the optimal position that balances remaining serrated length with loop security, eliminating variability in operator technique.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If manual cutting methods are used, then simple tools are required, but consistent rounded cuts at precise distances are difficult to achieve

Engineering Contradiction:

Improvesimplicity of toolVSAvoidprecision of cut position and shape

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The nosepiece assembly acts as an intermediary mechanism between the simple trigger activation and the cutting blade. It translates the simple triggering action into precise blade displacement along the vertical rail, ensuring consistent rounded cuts at the correct distance from the head portion while maintaining overall tool simplicity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12157240B2Severing a cable tie with a rounded cut

Publication Date: 2024.12.03 HELLERMANNTYTON CORP

AI summary

A cable tie cutting apparatus comprises a housing and a nosepiece assembly coupled to the housing. The nosepiece assembly comprises an upper portion, and a side portion and a front portion orthogonal to and extending from the upper portion. The front portion comprises a receiving element configured to receive a tail portion of a cable tie through a slotted opening and a vertical rail protruding from the front portion. The tool further comprises the blade member having a curved cutting edge and a rear planar surface that defines a channel that mates with the vertical rail of the nosepiece assembly.