Integrated Suspension Arm Rotation Damper for Vibration Damping
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Solution Overview
Problem
Existing motor vehicle wheel suspension systems face challenges with limited installation space, weight, and cost due to the need for additional components and linkage systems for rotation dampers, which result in inadequate vibration attenuation and noticeable acoustic vibrations.
Innovation Solution
The rotation damper is directly integrated into the suspension arm, allowing pivoting movements to be transferred to a motion-coupled rotatable damper part, eliminating the need for additional space-consuming components and enhancing vibration damping through a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rotation damper is connected via linkages with push rods, then vibration damping function is achieved, but device complexity and installation space requirements increase
Solution Approach 1:
The rotation damper is merged with the suspension arm support to form an integrated unit. The damper housing is formed as one piece with the support structure, eliminating the need for separate linkage components such as push rods and mounting brackets. This integration maintains the vibration damping function while significantly reducing device complexity and the number of parts.
Solution Approach 2:
The support structure serves multiple functions: it provides structural support for the suspension arm, acts as the housing for the rotation damper, and serves as the mounting point for the damper element. This multi-functionality eliminates the need for separate components and reduces overall system complexity.
2Reliability
If rotation damper is connected via linkages, then damping function is provided, but weight and cost of wheel suspension increase
Solution Approach 1:
By combining the support structure and damper housing into a single integrated component, the total material usage is reduced. The linkage components, push rods, and mounting structures are eliminated, resulting in significant weight reduction for the wheel suspension system while maintaining the damping function.
3Ease of operation
If eccentric connections are used for rotation damper, then mounting is simplified, but angular range of movement is limited
Solution Approach 1:
The suspension arm is designed with dynamic geometry that allows it to pivot through a large angular range. The integrated support structure accommodates this motion without the constraints of fixed eccentric mounting points, enabling the damper to effectively operate across the full range of suspension travel.
4Adaptability or versatility
If long rods are used to realize large spring excursions, then movement range is increased, but installation space requirements increase
Solution Approach 1:
The rotation damper is nested within the hollow-cylindrical bearing seat of the suspension arm. This nested arrangement allows the damper mechanism to occupy minimal space while still accommodating large spring excursions through rotational motion, eliminating the need for long external rods.
Solution Approach 2:
The solution transitions from linear rod extension to rotational motion within a compact cylindrical space. By utilizing the rotational dimension within the bearing seat, the system achieves large effective excursions without increasing the linear dimensions or external space requirements.
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 solution provides a space-saving, compact wheel suspension design that effectively attenuates vibrations and reduces acoustic noise, while allowing for improved damping performance and energy recovery through the integration of the rotation damper within the suspension arm.
Implementation Method 1
at least one rotation damper having at least one damper element for damping the relative movement between a first mass arranged on a wheel suspension side and a second mass arranged on a vehicle body side
Data Source
AI summary
A motor vehicle has a plurality of vehicle wheels that are or can be mounted on the vehicle body by means of wheel suspensions. A wheel has at least one suspension arm that connects a vehicle wheel to a vehicle body and is pivotable about an axis, and at least one rotation damper having at least one damper element for damping the relative movement between a first mass arranged on the wheel suspension and a second mass arranged on the vehicle body. The rotation damper is integrated directly into the mounting of the suspension arm, wherein pivoting movements of the suspension arm induced by the mass movement can be transferred to a rotatable damper part of the damper element which is motion-coupled to the connecting element.