Self-Supporting Cutting Wire With Retaining Arrangements
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Solution Overview
Problem
Cutting wires for plant cutting devices, such as trimmers and brushcutters, require specialized packaging to maintain their coiled shape, which increases environmental impact and manufacturing costs.
Innovation Solution
A self-supporting cutting wire design with reciprocal retaining arrangements, allowing each turn to cooperate mechanically with adjacent turns to form a stable coil without external packaging, utilizing elastic deformation and friction to maintain the coil shape, enabling storage and transportation without additional packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If cutting wire is stored in specialized packaging to maintain coiled shape, then the wire maintains its shape and stability, but manufacturing costs increase and environmental impact worsens
Solution Approach 1:
The cutting wire is designed with self-retaining features where the wire itself maintains its coiled shape through its own structural characteristics rather than requiring external packaging. The wire's profile and coiling geometry enable it to support its own shape, making the packaging obsolete and reducing manufacturing costs while eliminating environmental impact from specialized packaging.
2Stability of the object's composition
If cutting wire is stored in specialized packaging to maintain coiled shape, then the wire maintains its shape and stability, but environmental impact increases
Solution Approach 1:
The cutting wire is designed with self-retaining features where the wire itself maintains its coiled shape through its own structural characteristics rather than requiring external packaging. The wire's profile and coiling geometry enable it to support its own shape, making the packaging obsolete and reducing environmental impact from specialized packaging.
3Strength
If cutting wire has rigid material structure, then the wire maintains structural integrity, but the wire cannot remain in coil form without external holding means
Solution Approach 1:
The cutting wire incorporates localized geometric features such as ridges, grooves, or asymmetric cross-sections at specific positions along its length. These local structural modifications create mechanical interlocking between adjacent turns when coiled, enabling the rigid wire to maintain its coil form without external packaging while preserving overall structural integrity.
Solution Approach 2:
The cutting wire is designed with a specific coiled geometry where the wire forms tight loops with controlled curvature. This curved configuration, combined with local structural features, allows the rigid wire to nestle into itself and maintain the coil form through geometric interlocking rather than requiring external holding means.
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
Reduces environmental impact and manufacturing costs by eliminating the need for specialized packaging, while maintaining the wire's ability to be wound into a stable coil for use and storage.
Implementation Method 1
two adjacent turns fit together by elastic deformation of the retaining arrangements
Implementation Method 2
the retaining arrangements cooperate by friction
Data Source
Figure 1A
Figure 1B~1C
Figure 2
AI summary
The invention relates to a cutting wire (1) for a plant cutting device, such as an edge trimmer or a brush cutter, the wire (1) being profiled and adapted to be wound on itself so as to form a coil (B) comprising at least two turns (S), characterized in that the wire (1) comprises reciprocal retaining arrangements (10, 20) such that each turn (S) cooperates with at least one adjacent turn (S) so as to retain it mechanically, so that the coil (B) is self-supporting.