Wheel Link Rotational Absorber With Dual Buffers for Strike Prevention

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Solution Overview

Problem

Existing wheel link devices for motor vehicles do not effectively address the need for high driving comfort by efficiently damping vibrations and preventing components from striking each other, leading to noise and discomfort.

Innovation Solution

A wheel link device with a vibration absorber featuring an absorber mass, coupling element, and dual buffers - a first buffer to prevent direct strikes and a second buffer to tune absorber frequency, using elastically deformable materials to damp vibrations and isolate components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a vibration absorber is added to the wheel link device, then vibration damping performance is improved, but device complexity increases

Engineering Contradiction:
Improvevibration damping performanceVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The vibration absorber is integrated into the wheel link device by nesting the absorber mass within the structural components. The absorber mass is positioned inside the wheel link assembly, utilizing existing space rather than adding external components, thereby reducing overall device complexity while maintaining vibration damping functionality.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The vibration absorber functionality is merged with the wheel link structure by combining the absorber mass with the coupling element and buffer system. This integration allows the vibration damping function to be achieved without requiring separate, independent components, thus improving vibration damping performance while controlling device complexity.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If buffers are used to prevent component strikes, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improveprotection against component strikesVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Buffers are strategically positioned between the wheel link and absorber mass to provide beforehand cushioning. This prevents direct strikes and impacts between components during vibration events, thereby improving reliability by protecting components from damage while maintaining a relatively simple device structure through targeted buffer placement.

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

3Reliability

If dual buffers are implemented for different functions, then vibration damping effectiveness is improved, but device complexity increases

Engineering Contradiction:
Improvevibration damping effectivenessVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Two buffers with different properties are implemented at different locations within the vibration absorber assembly. The first buffer is positioned to prevent direct strikes between components, while the second buffer is positioned to tune the absorber frequency. This local differentiation of buffer functions improves vibration damping effectiveness while maintaining device simplicity through targeted, location-specific buffer placement.

Inventive Principle:
Principle #3Local quality

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 effectively damps vibrations and prevents component strikes, enhancing driving comfort by reducing noise and ensuring efficient vibration absorption across various temperature and excitation ranges.

Implementation Method 1

the coupling element is elastically deformable in the event of a relative rotation between the components about the pivot axis

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a first buffer (7a, b), which is elastically deformable, is provided

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 3

a second buffer (8a, b), which is elastically deformable, is provided

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 4

The vibration absorber has an absorber mass (5), which is pivotable about a pivot axis relative to the wheel link (2)

Methodology Applied
Scientific EffectVibration damping: Damping

Data Source

PatentUS20250381816A1Wheel Link Device for a Motor Vehicle, in Particular for a Passenger Car, and Motor Vehicle
Publication Date: 2025.12.18 BAYERISCHE MOTOREN WERKE AG
  • US20250381816A1 patent drawing

AI summary

A wheel link device for a motor vehicle has a wheel link as a first component, and a vibration absorber designed as a rotational absorber, wherein the vibration absorber has an absorber mass as a second component, which can be pivoted relative to the wheel link about a pivot axis, and has at least one coupling element, which is elastically deformable to damp the vibrations in the event of a respective relative rotation between the components about the pivot axis. At least one elastically deformable first buffer is provided, which in an idle position of the wheel link device is spaced apart from at least one of the components and therefore the first buffer prevents the wheel link from directly hitting the absorber mass. An elastically deformable second buffer is provided, which in the idle position is supported on both components.