Modular Holding Device for Safety Nets with Sliding Profile Sleeves

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Solution Overview

Problem

Existing holding devices for fall protection systems are costly to produce, require high conversion effort for adjustments, and are limited in their applications due to complex designs and bulky components, making them unsuitable for quick assembly in tight spaces.

Innovation Solution

A modular holding device with ferrule-like clamping units featuring profile sleeves that can be slid onto a guide rod, allowing for easy positioning and fixing with a simple clamping mechanism, utilizing a form-fitting and frictional connection system, and enabling adaptation to various support positions with a minimal number of parts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional holding device with multiple clamping elements and adjusting spindles is used, then the clamping connection is secure, but the conversion effort and assembly time increase significantly

Engineering Contradiction:
Improveclamping connection securityVSAvoidconversion effort
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The holding device is divided into modular components: a guide rod that can be inserted into the guide slot, and a clamping unit with profile sleeves that can be independently positioned and fixed. This segmentation allows each component to be assembled separately and quickly connected, reducing overall assembly effort while maintaining secure clamping through the interaction of these modular parts.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The profile sleeves are designed to slide onto the guide rod and be positioned within the clamping unit structure. The support part is received within the clamping unit, creating a nested arrangement where smaller components fit within larger ones. This nesting reduces the number of separate assembly operations needed while ensuring secure positioning through the hierarchical structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If a holding device with many individual parts is used, then the clamping function is comprehensive, but the production cost and system complexity increase

Engineering Contradiction:
Improveclamping function comprehensivenessVSAvoidnumber of individual parts
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The guide rod serves multiple functions: it provides a guide path for the clamping unit, acts as a support element, and enables the profile sleeves to be positioned along its length. The profile sleeves themselves can function both as positioning elements and as clamping surfaces. This multi-functionality reduces the need for separate dedicated components for each function, thereby reducing overall part count while maintaining comprehensive clamping capability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The guide slot and guide rod are designed as complementary components that together provide both guidance and support functions. The clamping unit combines the profile sleeves, clamping elements, and support part reception into a single integrated assembly. By merging these functions into fewer components, the device achieves comprehensive clamping capability with reduced complexity and lower production costs.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If a holding device with fixed clamping jaws is used, then the structure is simple, but the adaptability to different support positions is limited

Engineering Contradiction:
Improvestructural simplicityVSAvoidadaptability to different support positions
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The profile sleeves are designed to be displaceable along the guide rod, allowing the clamping unit to be dynamically positioned at different locations. The guide slot in the support part provides a path that allows the guide rod to be inserted and the profile sleeves to be moved to various positions. This dynamic positioning capability enables the same simple structural components to adapt to different support positions and application requirements.

Inventive Principle:
Principle #15Dynamics

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 modular design allows for quick and efficient assembly in different support positions, reduces production costs, and can be expanded inexpensively, making it suitable for various applications in tight spaces with reduced technical effort.

Implementation Method 1

the security of the clamp connection is increased by a form-fitting system that can be achieved in addition to the frictional connection of the system

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

the profile sleeves, which have an undercut or similar contact form, can be fixed by a comparatively simple adjusting and clamping movement be fixed in this holding position

Methodology Applied
Scientific EffectForm-fitting connection: Mechanical Fastener

Data Source

PatentEP2177690B1Holding device for a safety component, in particular for security walls or nets
Publication Date: 2013.07.24 WEGLAGE GEORG
  • EP2177690B1 patent drawingFigure 1~3
  • EP2177690B1 patent drawingFigure 4~5
  • EP2177690B1 patent drawingFigure 6~7

AI summary

The device (1) has a clamping unit (K) comprising clamping jaws for clamping a protection part (2) in an area of a support part (3). The support part is formed as a support sleeve (11) in a region of the clamping unit. The support sleeve comprises a holding shoulder (12) for holding the protection part. The support sleeve comprises plug openings for connecting units (31, 31'), where a guide rod (6) is supported at the plug openings with variable support positions (W, W', W''). The support sleeve is attached to the guide rod.