Torsion Vibration Damper Axial Centering Guide Bodies
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Solution Overview
Problem
Existing torsional vibration damper arrangements for vehicle drive trains face challenges in achieving a compact design with good decoupling quality between the primary and secondary sides, as they often lack effective axial security for deflection masses and guide bodies, leading to potential misalignment and reduced vibration damping efficiency.
Innovation Solution
A torsional vibration damper arrangement featuring a deflection mass carrier with two carrier disks and guide tracks that utilize roller-like guide bodies to maintain axial centering and minimize friction, ensuring the deflection masses are securely positioned and move radially to absorb vibrational energy effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If guide bodies are used to enable friction-free movement of deflection masses in guide tracks, then vibration damping efficiency is improved, but axial centering and security of guide bodies relative to carrier disks is lost leading to potential misalignment
Solution Approach 1:
The guide bodies are given a conical shape with axial extension, transforming them from purely radial rollers to three-dimensional elements that can simultaneously provide radial movement guidance and axial centering. The conical surface allows friction-free radial motion while the axial extension with centered positioning provides the missing axial stability dimension.
Solution Approach 2:
The guide bodies are designed to self-center axially through their conical geometry and interaction with the guide tracks. The axial centering is achieved automatically by the geometry itself without requiring additional external centering components, making the system self-sufficient for both radial and axial positioning.
2Reliability
If additional components are added to secure guide bodies axially, then axial positioning is improved, but device complexity increases
Solution Approach 1:
The guide bodies merge multiple functions into a single component: radial guidance, axial centering, and friction-free movement. This consolidation eliminates the need for separate centering components that would otherwise be required, reducing overall device complexity while maintaining reliability.
Solution Approach 2:
The guide bodies are designed as multi-functional elements that simultaneously perform radial guidance, axial centering, and support the deflection masses. This universal design approach allows one component to fulfill multiple roles that would traditionally require separate dedicated components.
3Loss of energy
If deflection masses are allowed to move radially for vibration damping, then vibration absorption is improved, but axial stability may be compromised
Solution Approach 1:
The movement of deflection masses is segmented into independent radial and axial components. Radial movement is permitted for vibration damping while axial position is independently controlled and centered, allowing each degree of freedom to be optimized separately for its specific function.
Solution Approach 2:
The guide bodies act as intermediary elements between the deflection masses and the carrier disks. They mediate the movement by allowing radial displacement for vibration absorption while simultaneously maintaining axial centering, thus decoupling the two movement dimensions.
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 design enhances decoupling quality and vibration damping efficiency by maintaining axial centering without additional components, allowing for friction-free movement and improved axial positioning of deflection masses, thus effectively reducing rotational irregularities in the drive train.
Implementation Method 1
roller-like guide bodies to maintain axial centering and minimize friction
Implementation Method 2
minimize friction
Implementation Method 3
at least one deflection mass carried on the deflection mass carrier from a base with a maximum distance from the axis of rotation into a deflection position with a smaller distance from the axis of rotation
Data Source
Figure 1
Figure 2~4
Figure 5~7
AI summary
The arrangement has a primary side to be coupled to a drive element and a secondary side rotated with respect to the primary side about an axis of rotation against action of a damper element assembly. The secondary side includes circumferential support elements (102, 104) including circumferential support regions (106, 108) and an angular disk-type mass element. A connecting element (118) i.e. riveted bolt, is connected with one of the circumferential supporting elements and a deflection mass support (12) through the secondary-sided mass element.