Wearable Fastening Adjustment Unit for Stable Strap Positioning

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Solution Overview

Problem

Existing fastening devices for wearable articles with shoulder straps often lack adjustable positioning and tightness, leading to discomfort and unwanted displacement during wear, especially during active movements.

Innovation Solution

A fastening device with an adjustment unit featuring a main body with locking channels and a hook element that engages with a fastening cord, allowing for secure and adjustable positioning and tightness, enhancing wearing comfort by preventing longitudinal movement and allowing for easy release without high force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the fastening device is fixedly connected to the shoulder straps, then the positioning is stable, but the adjustability is lost

Engineering Contradiction:

Improvepositioning stabilityVSAvoidpositioning adjustability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The fastening device incorporates a dynamic adjustment mechanism that allows the positioning to be changed when needed, then locked stable when adjusted. The adjustment unit can be operated to move between different positions and then secured, providing both adaptability during adjustment and reliability during use.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the fastening device allows positioning adjustment, then the adaptability is improved, but the stability is reduced due to continuous movement and displacement

Engineering Contradiction:

Improvepositioning adjustabilityVSAvoidpositioning stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The adjustment unit is designed to be pre-adjusted to the desired position before actual use. Once the positioning is set, the adjustment mechanism allows for easy release and re-adjustment if needed, but maintains stable locking during normal wear without continuous movement.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If the fastening device is tightened securely, then the wearing comfort is improved, but the ease of operation deteriorates during activities such as running

Engineering Contradiction:

Improvewearing comfortVSAvoidtightening ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The adjustment unit incorporates a self-locking mechanism that automatically secures the fastening device at the desired tightness level. The design allows the device to maintain its own tension without requiring continuous manual adjustment, and the release mechanism can be operated easily even during physical activities.

Inventive Principle:

Principle #25Self-service

4Adaptability or versatility

If the fastening device comprises loose sections with large movement range, then the adjustability is improved, but the wearing comfort is reduced

Engineering Contradiction:

Improveadjustability rangeVSAvoidwearing comfort

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The fastening device is divided into segmented sections with controlled movement ranges. Each segment can be adjusted independently to the appropriate degree of looseness or tightness, allowing the device to provide both adjustability and comfort by eliminating excessive loose movement while maintaining necessary flexibility.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20240023654A1Adjustment unit, fastening device and wearable article

Publication Date: 2024.01.25 ON CLOUDS GMBH

AI summary

An adjustment unit (1) with a main body and an adjustment unit hook element (3) protruding from the main body which can be used in an adjustment device (1), as well as a wearable article with such a fastening device (100).