Vibration Damper Valve Restriction With Damped Radial Closing

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Solution Overview

Problem

Existing damping valve devices struggle to achieve optimal response behavior and damping force characteristics, which affect the overall functional quality of the device.

Innovation Solution

The introduction of a damping device controlled by at least one elastomer body or hydraulic damping mechanism, which can be supported on a valve support or cap, allows for adjustable damping force characteristics and improved response behavior.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If a damping device is added to control the valve body's dosing movement, then the speed of response and adaptability are improved, but the device complexity increases

Engineering Contradiction:
Improvespeed of responseVSAvoiddevice complexity
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The damping device is nested within the existing valve body structure, with the elastomer body integrated into the valve body's internal cavity. This allows the damping function to be added without requiring a separate external damping mechanism, thereby improving response speed while minimizing the increase in overall device complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

An elastomer body is used as the damping element, which provides flexible, speed-dependent damping characteristics. The elastomer's inherent viscoelastic properties enable it to adapt to different movement speeds, improving the valve body's response behavior without requiring complex mechanical damping structures.

Inventive Principle:
Principle #30Flexible shells and thin films

2Loss of energy

If the damping device is supported on the valve support, then frictional effects are reduced, but additional installation space is required

Engineering Contradiction:
Improvefrictional effectsVSAvoidinstallation space
Core Design Contradiction:
Loss of energyVSVolume of stationary object

Solution Approach 1:

The damping device is integrated with the valve support structure, combining the support function and damping function into a single unified component. This merging eliminates the need for separate mounting structures, reducing frictional effects while utilizing existing structural space rather than requiring additional installation volume.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If multiple damping devices are arranged circumferentially around the valve body, then selective adaptation to damping force characteristics is improved, but the device complexity increases

Engineering Contradiction:
Improveselective adaptationVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The damping function is segmented into multiple circumferentially arranged damping devices, each capable of providing damping force at different valve body diameters. This segmentation allows selective adaptation to different operating conditions by activating specific damping devices based on the valve body's expansion state, thereby improving versatility while maintaining manageable complexity through modular design.

Inventive Principle:
Principle #1Segmentation

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 configuration enhances the speed of response and adaptability of the damping valve device, enabling more selective control over damping force characteristics, thus improving the functional quality of the device.

Implementation Method 1

at least one elastomer body (81), which is flexible in the radial direction, is placed on the valve support (29)

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The damping device can be used to exert a very powerful effect on the speed of response of the damping valve device

Methodology Applied
Scientific EffectViscoelasticity: Viscoelasticity

Implementation Method 3

Alternatively, the damping device can be embodied as a hydraulic damping device

Methodology Applied
Scientific EffectHydraulic damping: Hydraulic Press

Implementation Method 4

In the case of a hydraulic damping device, a particularly simple design can be achieved if the valve body and the valve support form a pressure chamber

Methodology Applied
Scientific EffectPressure gradient: Pressure Gradient

Data Source

PatentUS12215755B2Restriction for a vibration damper
Publication Date: 2025.02.04 ZF FRIEDRICHSHAFEN AG
  • US12215755B2 patent drawing
  • US12215755B2 patent drawing
  • US12215755B2 patent drawing

AI summary

A damping valve device for a vibration damper is disclosed, the damping valve device comprising a valve body of variable diameter, which is guided by a valve support and, starting from a passage position, adopts a restricting position as a function of a speed of flow of a damping medium within the restriction by a radial closing movement in the direction of a flow guiding surface. The closing movement of the valve body is controlled by at least one damping device.