Torsional Vibration Damper Catch Structure Axial Securing
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Solution Overview
Problem
Torsional vibration dampers and tuned mass dampers face challenges in reducing rotational irregularities while maintaining operating reliability, simplicity in assembly and production, efficient use of installation space, and weight reduction, particularly in vehicle engineering, where increased energy efficiency measures lead to enhanced rotational irregularities and noise issues due to gravitational forces during low-speed operations.
Innovation Solution
A tuned mass damper design featuring a damper mass and carrier with a supporting body connected via a catch structure for positive engagement, allowing axial securing and noise reduction, while also simplifying assembly and production through elastic deformability and efficient use of space, using materials like plastics and metals with varying thermal expansion coefficients for enhanced reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If supporting rings are used to prevent damper mass collisions and reduce noise, then comfort is improved, but device complexity increases and reliability may be compromised
Solution Approach 1:
The invention extracts the noise-generating collision function from the supporting ring by introducing a separate end stop structure. The supporting ring is redesigned to engage with the damper mass carrier via a catch structure, removing its collision-damping function and leaving only the noise prevention function to the end stop, thereby simplifying the supporting ring's design and improving reliability.
Solution Approach 2:
The invention segments the functions of noise prevention and collision damping into separate structural elements: the supporting ring with catch structure handles axial positioning and noise reduction, while the end stop structure specifically handles collision prevention. This functional segmentation allows each component to be optimized independently, improving overall system reliability.
2Object-affected harmful factors
If supporting rings are used to prevent damper mass collisions, then comfort is improved, but assembly and production complexity increases
Solution Approach 1:
The invention merges the supporting ring and end stop structure into an integrated assembly where the supporting ring's catch structure directly engages with the damper mass carrier. This combination eliminates the need for separate fastening mechanisms and simplifies the assembly process, making production more efficient while maintaining noise reduction functionality.
Solution Approach 2:
The catch structure acts as an intermediary mechanism between the supporting ring and damper mass carrier, providing a simple yet effective connection method that facilitates easy assembly and production while ensuring reliable axial positioning of the supporting ring.
3Reliability
If the supporting body is securely connected to the damper mass carrier, then operating reliability is improved, but installation space requirements increase
Solution Approach 1:
The catch structure employs a dynamic engagement mechanism where the supporting ring can be easily installed and removed through axial movement. The catch structure provides secure connection during operation but allows for simple assembly and disassembly, optimizing both reliability and installation space efficiency.
4Reliability
If damper masses are used to absorb energy peaks, then rotational irregularities are dampened, but gravitational forces cause collisions at low speeds
Solution Approach 1:
The end stop structure provides beforehand cushioning by being pre-positioned to receive damper masses before gravitational forces can cause harmful collisions. This preventive structure ensures that even at low speeds where gravitational forces dominate, the damper masses are safely contained without generating noise or mechanical stress.
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 reduces noise and mechanical stress, enhances operating reliability, and simplifies assembly and production by securing the supporting body axially and radially, while optimizing space usage and material selection for thermal stability.
Implementation Method 1
The catch structure can be elastically deformable to make it possible to engage behind the damper mass carrier
Implementation Method 2
a tuned mass damper for damping a vibration component of a rotational movement
Implementation Method 3
the dominating force acting on the damper masses is gravitational force
Implementation Method 4
the dominating force acting on the damper masses is gravitational force and not centrifugal force
Data Source
AI summary
A torsional vibration damper for damping a vibration component of a rotational movement around an axial direction has a damper mass to carry out an oscillation to damp the vibration component, a damper mass carrier to movably guide the damper mass, and a supporting body in contact with or can enter into contact with the damper mass in at least one operating situation of the torsional vibration damper. The supporting body is connected to the damper mass carrier to drive the supporting body relative to the damper mass carrier during rotation of the torsional vibration damper, and a support structure formed together with the supporting body to radially support the supporting body under a first operating condition and to radially release the supporting body under a second operating condition which differs from the first operating condition.