Cable Stripping Tool Compact Handle Design

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional cable stripping tools require a long handle due to the spring suspension of the cable retaining bracket, making them impractical for use in tight spaces and posing a risk of injury from exposed tension springs.

Innovation Solution

The tension spring is integrated into a cavity within the sliding tab of the cable retention bracket, allowing for a shorter handle design and concealing the spring to prevent injuries, while maintaining the necessary length for ergonomic comfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the tension spring is exposed for suspension of the cable retaining bracket, then the bracket can be easily suspended and moved, but the user can be injured by contact with the spring or the spring can get caught on objects

Engineering Contradiction:
Improveease of suspensionVSAvoidinjury risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The tension spring is integrated into a cavity within the sliding tab of the cable retention bracket, nesting the spring inside the bracket structure. This eliminates exposure of the spring while maintaining its suspension function, as the spring remains contained within the hollow body of the sliding tab throughout operation.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If a long handle is used for spring suspension, then the spring can be adequately suspended, but the tool cannot be used in tight spaces and junction boxes close to ceilings

Engineering Contradiction:
Improvespring suspension reliabilityVSAvoidhandle length
Core Design Contradiction:
ReliabilityVSLength of moving object

Solution Approach 1:

The tension spring is nested within the hollow body of the sliding tab, utilizing the internal cavity space rather than requiring external handle length. This integration allows adequate spring suspension and deflection within the compact handle structure, enabling use in tight spaces while maintaining reliable spring function.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Length of moving object

If the tension spring is integrated into the sliding tab cavity, then the handle can be shortened and the spring concealed, but the spring must still maintain adequate length for ergonomic operation

Engineering Contradiction:
Improvehandle lengthVSAvoidergonomic comfort
Core Design Contradiction:
Length of moving objectVSEase of operation

Solution Approach 1:

The spring is arranged in a three-dimensional cavity within the sliding tab, utilizing vertical and lateral space rather than extending the handle length. The spring extends from the front area of the sliding tab to the rear of the cavity, maintaining adequate length for ergonomic operation while being contained within the compact handle structure.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This design enables a more compact cable stripping tool that can be used in narrow spaces without the risk of spring-related injuries, and allows for additional tools to be integrated into the handle, such as a retractable knife blade.

Implementation Method 1

a tension spring (30) extending between a first suspension point (16) on the sliding tab (21) and a second suspension point (25) in the handle body (10)

Methodology Applied
Scientific EffectSpring: Spring

Data Source

PatentEP1887669B1Cable stripping tool
Publication Date: 2012.06.27 KRAMPE FRANZ
  • EP1887669B1 patent drawingFigure 1
  • EP1887669B1 patent drawingFigure 2
  • EP1887669B1 patent drawingFigure 3a~3b

AI summary

The tool has a gripping body (10), and a cable retaining bracket (20) that is adjustably supported with a movable plate in an opened recess and in a closed receiving channel in the body against the force of a tension spring (30). The spring extends between a suspension point (25) at bracket and another suspension point (16) at the body. The plate is partially formed as a hollow body with a hollow space, in which the spring is arranged.