Pendulum rocker damper with a rotation axis
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Solution Overview
Problem
Existing pendulum rocker dampers require significant installation space, exhibit hysteresis, and have difficulty in reliably adjusting transmission characteristics, especially when using elastomer damping elements that are prone to aging.
Innovation Solution
A pendulum rocker damper design with axially offset roller tracks and a helical compression spring as the energy storage device, allowing for a compact and hysteresis-free operation with adjustable transmission characteristics, using a ramp mechanism to convert energy into a customizable torque-to-angle relationship.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional pendulum rocker dampers are used, then damping function is achieved, but installation space requirement increases
Solution Approach 1:
The patent applies dimensional change by transitioning from a conventional planar rocker mechanism to a three-dimensional spherical rocker mechanism. The spherical rocker elements with radial roller tracks enable the damping function to be achieved in a more compact volume by utilizing spatial arrangement in multiple dimensions, thereby reducing the overall installation space while maintaining damping performance.
Solution Approach 2:
The patent implements nesting by integrating multiple functional components within the spherical rocker structure. The roller tracks, rolling elements, and spring elements are nested within the spherical rocker housing, allowing the damping mechanism to be compactly arranged. This nested configuration reduces the external dimensions and installation space requirement while preserving all necessary damping functions.
2Adaptability or versatility
If elastomer damping elements are used, then compact design is achieved, but transmission characteristic adjustment becomes difficult and aging occurs
Solution Approach 1:
The patent replaces the elastomer material-based damping mechanism with a mechanical system consisting of spherical rockers, roller tracks, and spring elements. This substitution eliminates the aging problems associated with elastomers while providing a reliable and adjustable mechanical damping mechanism. The transmission characteristics can be adjusted by modifying the mechanical geometry of the roller tracks and spring preloads.
Solution Approach 2:
The patent applies dynamics by using adjustable spring preloads and variable geometry roller tracks within the spherical rocker mechanism. This allows the transmission characteristics to be dynamically adjusted according to different operating conditions, providing versatility while maintaining reliable mechanical operation without aging effects.
3Strength
If conventional roller track designs are used, then simple structure is maintained, but hysteresis occurs and stiffness is reduced
Solution Approach 1:
The patent applies segmentation by dividing the roller track into multiple discrete sections or zones within the spherical rocker mechanism. Each segment can be independently optimized for specific functions such as force transmission, rolling contact, or geometric constraints. This segmented approach enables higher stiffness through optimized local structures while managing overall complexity through modular design.
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 design achieves high stiffness with minimal space requirements, low hysteresis, and adjustable transmission characteristics, suitable for various applications including vehicle suspension systems, without the need for additional damping elements, and is resistant to aging.
Implementation Method 1
a plurality of rocker elements with an input-side roller track and an output-side roller track; and a number of rolling elements corresponding to the number of roller tracks of the rocker elements; wherein the input side to each of the input-side roller tracks has a corresponding input-side counter-track, between which an input-side rolling element is clamped so as to roll off by means of the energy storage device
Implementation Method 2
an energy storage device for transmitting torque between the input side and the output side
Implementation Method 3
using a ramp mechanism to convert energy into a customizable torque-to-angle relationship
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a pendulum rocker damper (1) with a rotation axis (2), comprising at least the following components: - an input side (3); - an output side (4); - a stored energy source (5) for transferring a torque between the input side (3) and the output side (4); - a plurality of rocker elements (6) with an input-side roller track (7) and an output-side roller track (8); and - a corresponding number of rolling elements (9, 10), the input side (3) having a counter track (11) for each input-side roller track (7), between each input-side roller track and counter track there being an input-side rolling element (9) clamped rollably by means of the stored energy source (5), and the output side (4) having a counter track (12) for each of the output-side roller tracks (8), between each output-side roller track and counter track there being an output-side rolling element (10) clamped rollably by means of the stored energy source (5). The pendulum rocker damper (1) is characterised above all in that three separate partial tracks (13, 14, 15) arranged axially offset from one another are enclosed by the rocker elements (6) and form the roller tracks (7, 8). The invention further relates to a roll stabiliser (32) having a pendulum rocker damper (1). The pendulum rocker damper proposed here is compact and makes it possible to generate a high torsional rigidity. The roll stabiliser can be operated with reduced rattling noises.