Damped Fastening Unit Assembly for Axial and Radial Vibration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing fastening arrangements face challenges with high assembly and production efforts, and they often lack effective damping for both axial and radial vibrations or oscillations, particularly when used with different material thicknesses.

Innovation Solution

A fastening arrangement comprising two identically constructed fastening units with a central thru-opening, each including an assembly element and a damping element, where the assembly elements have a disk-like form with a central second thru-opening and identical latching structures, and the damping elements are disk-like with a central third thru-opening, allowing for secure engagement and compression to provide damping effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditionally configured fastening devices are used, then assembly and production efforts are high, but the damping effect is insufficient

Engineering Contradiction:

Improvedamping effectVSAvoidassembly and production effort

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The fastening device is divided into two separate fastening units, each with its own damping element and assembly element. This segmentation allows each unit to be independently manufactured and assembled, reducing overall production effort while maintaining effective damping through the combined action of both units

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The damping element is arranged at least partly in the central second thru-opening of the assembly element, creating a nested structure. This nesting allows the damping function to be integrated within the fastening structure itself, eliminating the need for separate damping components and reducing assembly complexity

Inventive Principle:

Principle #7Nested doll (Nesting)

2Ease of operation

If identically constructed fastening units are used, then unit identification is unnecessary, but traditional designs lack effective damping

Engineering Contradiction:

Improveassembly simplicityVSAvoiddamping performance

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Both fastening units are constructed identically with the same damping element and assembly element configuration. This universality allows either unit to be positioned in either location without requiring identification or differentiation, simplifying assembly operations while each unit independently provides the required damping performance

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The damping element is designed with specific material properties (shore A hardness between 40 and 80) and geometric parameters (thickness between 0.5 and 3 mm) that enable effective damping. These parameter changes transform the fastening unit from a simple mechanical connector to one with active vibration damping capabilities

Inventive Principle:

Principle #35Parameter changes

3Reliability

If damping elements are integrated in the fastening units, then damping performance is enhanced, but production complexity increases

Engineering Contradiction:

Improvevibration dampingVSAvoidproduction effort

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The damping element is pre-positioned within the assembly element during manufacturing, with the damping element arranged at least partly in the central second thru-opening. This preliminary integration ensures damping functionality is built-in before final assembly, eliminating the need for separate damping component installation and reducing overall production effort

Inventive Principle:

Principle #10Preliminary action

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

This solution reduces production effort, simplifies assembly by eliminating the need for unit identification, enhances damping performance for vibrations and oscillations, and allows for automated installation, while being adaptable to various application fields through material selection.

Implementation Method 1

a fastening arrangement with damping effect... compression of the respective damping element provides a damping effect for axial as well as radial vibrations

Methodology Applied

Scientific EffectVibration damping: Damping

Implementation Method 2

The damping element is formed disk-like and made of an elastomer or a thermoplastic elastomer having a shore A hardness of between 40 and 80 shore A

Methodology Applied

Scientific EffectViscoelasticity: Viscoelasticity

Data Source

PatentUS11466714B2Fastening arrangement with damping effect and component connection to the fastening arrangement

Publication Date: 2022.10.11 BOLLHOFF VERBINDUNGSTECHNIK GMBH

AI summary

A fastening arrangement with damping effect, consisting of two structurally identical fastening units each having a central first through opening. Each fastening unit comprises a mounting element and a damping element. The mounting element is disc-shaped with a central second through opening and an identical detent structure extends from a first side of each mounting element. The damping element is disc-shaped with a central third through opening and is arranged at last partially in the central second through opening of the mounting element. Due to this construction the two fastening units can be fastened to one another by means of the mutually facing first sides having the identical detent structure of the respective mounting elements with first component arranged between them.