Profile Clamp Hinge Structure for Higher Flange Force

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Solution Overview

Problem

Existing profile clamps face challenges in applying high axial forces between flange parts due to limited transmission of flange forces and complex assembly processes, with existing connecting elements often leading to material damage and difficulty in positioning clamp halves.

Innovation Solution

A profile clamp design featuring a flat strip section with an angular or oval hole for articulated connection, allowing for increased flexibility and simplified production by merging clamp halves and clamping heads from a single component, with pressure lugs and self-locking nuts for enhanced clamping force and reduced material deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If a ring-like connecting element is used to connect clamp halves, then the articulated connection is formed, but the flange force transmission is limited and positioning is difficult

Engineering Contradiction:
Improveflange force transmissionVSAvoidpositioning of clamp halves
Core Design Contradiction:
ForceVSEase of operation

Solution Approach 1:

The flat strip section merges the connecting function and positioning function into a single integrated component. The flat strip section connects the two clamp halves while its flat geometry provides inherent positioning stability, eliminating the need for separate positioning mechanisms and allowing higher force transmission compared to ring-like elements.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The connecting element is changed from a ring-like shape to a flat strip section. This parameter change in geometry fundamentally improves both force transmission capability and positioning ease, as the flat strip can better resist bending moments and provides stable geometric alignment between clamp halves.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If connecting elements are repeatedly bent to form articulated connections, then the clamp halves can be moved open and closed, but material damage occurs quickly

Engineering Contradiction:
Improvearticulated movement capabilityVSAvoidmaterial durability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The flat strip section acts as a flexible connecting element that can be repeatedly bent to open and close the clamp halves. Its flat geometry and material properties allow for repeated articulation without the damage that occurs with traditional connecting elements, providing both movement capability and durability.

Inventive Principle:
Principle #30Flexible shells and thin films

3Ease of manufacture

If multiple individual parts are used to produce the profile clamp, then the clamping device can be assembled, but the production process becomes complex

Engineering Contradiction:
Improveproduction simplicityVSAvoidnumber of individual parts
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The flat strip section integrates multiple functions (connection, articulation, positioning) into a single component, reducing the total number of parts. The clamp halves and flat strip section can be produced as separate components that are then joined, simplifying production compared to multi-part assemblies while maintaining functional complexity.

Inventive Principle:
Principle #5Merging (Combining)

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

Enables higher axial force transmission and simplified assembly with reduced material damage, improved positioning, and increased clamping force, facilitating easier assembly and use in applications like turbochargers.

Implementation Method 1

The flat design of the articulated connection as a flat strip section results in reduced flexural rigidity, so that the clamp halves can be bent open and closed relative to one another without major plastic deformation by deforming the flat strip section

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The two clamping heads are connected to one another with a screw element, so that the profile clamp is tensioned by tightening the screw element

Methodology Applied
Scientific EffectMechanical fastening: Mechanical Fastener

Data Source

PatentEP3423745B1Profiled clamp
Publication Date: 2022.01.05 NORMA GERMANY GMBH
  • EP3423745B1 patent drawingFigure 1~2
  • EP3423745B1 patent drawingFigure 3
  • EP3423745B1 patent drawingFigure 4~6

AI summary

The invention relates to a profiled clamp (1), having a first profiled clamp half (10) and a second profiled clamp half (11), by means of which two flange parts can be connected to each other while applying an axial force, wherein a first tightening head (12) is formed at an end of the first clamp half (10) and a second tightening head (13) is formed at an end of the second clamp half (11) in order to form a tightening device. The ends of the clamp halves (10, 11) opposite the tightening heads (12, 13) are connected to each other by means of an articulated connection (14). According to the invention, the articulated connection (14) is formed by means of a flat strip section (15).