Elastic Reversible Locking Element for Metal Wire Plant Stakes

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Solution Overview

Problem

Existing methods for locking horizontal metal or plastic wires on vertical stakes in agricultural support grids are either labor-intensive, require complex manual handling, or result in bulky accessories that can damage wires or obstruct vegetation.

Innovation Solution

An elastic and reversible locking element with a specific geometry that allows for quick assembly by unskilled personnel, providing a strong and secure fixation of the wire to the stake with multiple points of contact, thus preventing horizontal sliding and ensuring stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a section of metal wire is wrapped around the stake and tightened by clamps or pliers, then the horizontal wire is firmly joined to the vertical stake, but the manual work required for each individual application becomes demanding and time-consuming

Engineering Contradiction:
Improvefirmness of wire-stake connectionVSAvoidspeed of wire fixation
Core Design Contradiction:
StrengthVSProductivity

Solution Approach 1:

The locking element is designed to automatically lock the wire to the stake without requiring external tools like clamps or pliers. The element's own structure enables it to tighten and secure the wire through its geometry and elastic properties, making the system self-sufficient and eliminating the need for additional manual operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention extracts the tightening function from separate tools (clamps, pliers) and integrates it into the locking element itself. By removing the need for external tightening devices, the process becomes simpler and faster while maintaining connection strength.

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If a section of metal wire is arranged oblique to wrap around both the vertical stake and horizontal wire, then both components can be connected, but the wire allows horizontal sliding and becomes less applicable

Engineering Contradiction:
Improveability to connect wire and stakeVSAvoidstability of wire position
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The locking element is divided into distinct functional segments: a first end with folds for embracing the wire, a central portion for positioning, and a second end for locking against the stake. This segmentation allows each part to perform its specific function optimally, preventing wire sliding while maintaining connectivity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of wrapping the wire obliquely around the stake, the invention inverts the approach by using a structured element that engages the wire perpendicularly and locks it against the stake. This reversal of the connection geometry eliminates the sliding problem while maintaining adaptability.

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

3Reliability

If a specific accessory with a screwdriver lever is used to tighten and lock the wire, then the stake is optimally locked on the wire, but the accessory cannot be reused and is bulky, disturbing vegetation and potentially damaging the wire

Engineering Contradiction:
Improveoptimality of stake lockingVSAvoidbulkiness and reusability of accessory
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking element is designed as a simple, inexpensive, disposable component that can be quickly applied and then discarded or reused if needed. Its simplicity reduces bulkiness and eliminates the need for complex reusable accessories with multiple parts, while still achieving optimal locking.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The invention merges the locking and tightening functions into a single integrated element that directly engages the wire and stake without requiring separate accessories. This consolidation eliminates the bulkiness of multi-component systems while maintaining reliable locking.

Inventive Principle:
Principle #5Merging (Combining)

4Strength

If a vertical hook with saddle portion and folds is used to engage the stake and wire, then strong tightening is achieved, but the element requires complex processing and individual handling of multiple parts

Engineering Contradiction:
Improvetightening force of wire-stake connectionVSAvoidcomplexity of element processing
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The locking element is segmented into functional zones (wire-embracing folds, central positioning portion, stake-locking end) that can be formed through simple sequential operations. This segmentation allows complex functionality to be achieved through straightforward manufacturing steps rather than intricate processing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention achieves strong tightening through controlled elastic deformation of the locking element during installation. By utilizing material elasticity and controlled bending, the element generates sufficient locking force without requiring complex heat treatment, alloying, or other advanced manufacturing processes.

Inventive Principle:
Principle #35Parameter changes

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

The solution significantly reduces the time and effort required for wire fixation, enhances the stability and resistance of the wire to stake connection, and is cost-effective to produce, while avoiding damage to the wire or obstruction of vegetation.

Implementation Method 1

The invention refers to an elastic and reversible locking element of horizontal metal wires on stakes or vertical rods

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4110042B1Improved reversible locking element of a metal wire on a plant stake
Publication Date: 2025.04.16 BORTOLUSSI CLAUDIO
  • EP4110042B1 patent drawingFigure 1
  • EP4110042B1 patent drawingFigure 2A
  • EP4110042B1 patent drawingFigure 2B~2C

AI summary

The present invention relates to an improved reversible locking element of a metal wire on a plant stake. The invention also relates to a system for orchards, preferably vineyards, comprising a plurality of said elements, as well as a method for supporting the branches of fruit plants comprising the construction of a support grid for said branches, wherein horizontal wires are reversibly locked on plant stakes by means of said element. The element allows a very firm tightening and is particularly comfortable and simple to use since it is constructively simplified compared to similar known elements.