Removable Pole Strap Attachment With Elastic Interlocking

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Solution Overview

Problem

Existing strap attachment devices for poles are complex to manufacture and lack adjustable release force, leading to quick wear and inconsistent trigger thresholds.

Innovation Solution

A removable fastening device with deformable connecting surfaces and elastic interlocking mechanisms, featuring spikes and openings, allows for adjustable trigger force and simple manufacturing, ensuring secure attachment and easy release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If existing strap attachment devices are used, then the wrist strap can be detached from the pole, but the devices are complex to manufacture and require inadvertent trigger force

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoiddevice structure complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The fastening device is divided into two separate parts: a male part with protrusions and a female part with recesses. These segmented components can be manufactured independently using simple injection molding processes, avoiding the need for complex single-piece structures while maintaining functional integrity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of using a complex locking mechanism that requires precise assembly, the invention inverts the approach by using simple geometric complementary shapes (protrusions fitting into recesses) that naturally guide assembly and provide secure attachment through basic elastic deformation

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

2Reliability

If existing strap attachment devices are used, then the wrist strap can be detached from the pole, but the devices wear out quickly and alter the trigger threshold

Engineering Contradiction:
Improvetrigger threshold consistencyVSAvoiddevice service life
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The invention changes the physical state of the connecting surfaces by making them elastically deformable. This elastic property allows the fastening device to absorb repeated attachment and detachment cycles without permanent deformation, maintaining consistent trigger thresholds and extending service life

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The elastic material provides a cushioning effect that absorbs the mechanical stress of repeated attachment and detachment operations. This pre-built elastic cushion prevents wear and threshold alteration by distributing forces evenly across the connecting surfaces

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Ease of operation

If a removable fastening device is implemented, then the wrist strap can be detached from the pole, but the connecting surfaces must deform elastically requiring precise force control

Engineering Contradiction:
Improveattachment and detachment easeVSAvoidtrigger force control
Core Design Contradiction:
Ease of operationVSForce

Solution Approach 1:

The elastic connecting surfaces automatically adjust to the applied force, providing self-regulating attachment and detachment. The material's inherent elastic properties eliminate the need for precise external force control, as the device itself manages the force requirements through its deformable nature

Inventive Principle:
Principle #25Self-service

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 provides a user-friendly, adjustable, and durable attachment system that ensures safe and reliable release of the strap from the handle, addressing the manufacturing complexity and wear issues of prior devices.

Implementation Method 1

at least one connecting surface of the male and/or female part of the fastening device is capable of deformation in a direction substantially perpendicular to said at least one connecting surface

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

one of the second connecting surfaces of the male or female part comprising studs and the other second connecting surface of the female or male part comprising openings capable of cooperating with said studs

Methodology Applied
Scientific EffectElastic interlocking: Elasticity

Data Source

PatentEP3415207B1Removable attachment device for a pole
Publication Date: 2020.12.23 SKIS ROSSIGNOL SA VOIRON FR
  • EP3415207B1 patent drawingFigure 1~2
  • EP3415207B1 patent drawingFigure 3~4
  • EP3415207B1 patent drawingFigure 5~8

AI summary

Removable fastening device (1) for stick (2) comprising a male part (100) and a female part (200), one of these two parts (100, 200) being intended to be attached to a handle (3) of a stick (2) and the other of these two parts (100, 200) being intended to receive a wrist strap (4), characterized in that the male part (100) comprises at least one connecting surface (110) capable of cooperating by elastic interlocking with at least one connecting surface (210) of the female part (200), one of the connecting surfaces (110; 210) of the male or female part comprising studs (130) and the other connecting surface (210; 110) of the female or male part comprising openings (230) capable of cooperating with said studs (130).