Dual Dynamic Vibration Damper Bracket for Multi-Frequency Tuning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vibration dampers face challenges in achieving sufficient vibration damping due to limited tunability of resonance frequency and increased installation space requirements, especially when targeting specific or multiple vibration frequencies.
Innovation Solution
A vibration damper design featuring a metal bracket with a first and second dynamic damper, each with distinct elastic connections and structures, allowing for independent tuning of resonance frequencies and simultaneous attachment to a target member, thereby enhancing vibration damping effectiveness for single or multiple frequencies while minimizing installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a larger mass member is adopted to achieve higher vibration damping performance at a specific frequency, then the vibration damping effect is improved, but the installation space increases
Solution Approach 1:
The vibration damper is divided into multiple independent dynamic dampers (first dynamic damper with mass member, second dynamic damper with outer mass member) that can be tuned to different frequencies. This segmentation allows each damper to be optimized for specific frequency ranges without requiring a single large mass member, thereby reducing overall installation space while maintaining effective vibration damping performance across multiple frequencies.
2Reliability
If two automotive dynamic dampers tuned to different vibration frequencies are separately attached to achieve excellent vibration damping effects for two types of vibrations, then the vibration damping effectiveness is improved, but the attaching complexity increases
Solution Approach 1:
Multiple dynamic dampers (first dynamic damper and second dynamic damper) are merged onto a single metal bracket structure. The bracket integrates attachment means for both dampers, allowing them to be simultaneously attached to the target member as one unit. This merging reduces attaching complexity compared to separately attaching multiple dampers, while maintaining the ability to dampen vibrations at different frequencies.
Solution Approach 2:
The metal bracket serves multiple functions: it provides structural support, integrates attachment means for both dynamic dampers, and enables simultaneous installation of multiple dampers tuned to different frequencies. This multi-functionality simplifies the overall attaching process while achieving comprehensive vibration damping effectiveness across multiple frequency ranges.
3Adaptability or versatility
If multiple dynamic dampers are attached to a common metal bracket to increase vibration damping tunability, then the degree of freedom in tuning is improved, but the load on the bracket increases
Solution Approach 1:
The metal bracket is designed with localized reinforcement at critical areas where dynamic dampers are attached. The bracket includes specific structural features such as reinforced attachment regions and optimized thickness distribution, providing enhanced local strength and rigidity where needed to withstand the loads from multiple dynamic dampers, while maintaining overall adaptability for tuning different frequencies.
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 provides a high degree of freedom in tuning vibration damping characteristics, achieving effective damping for specific or multiple frequencies with reduced load on the metal bracket, ensuring sufficient strength and rigidity to prevent resonance, and allowing for easy attachment and replacement of components.
Implementation Method 1
a pair of support rubber elastic bodies fixed to the rising walls and a mass member elastically supported by the support rubber elastic bodies
Implementation Method 2
the resonance frequency of the mass-spring system composed of the mass member and the elastic body is tuned to match the frequency of the vibration to be damped
Implementation Method 3
a pair of support rubber elastic bodies fixed to the rising walls and a mass member elastically supported by the support rubber elastic bodies
Data Source
AI summary
A vibration damper including a plate-shaped metal bracket having an attachment, and first and second extended parts extending from the attachment toward mutually opposite sides. Edge flanges rise from both widthwise edges of the attachment across its entire length. The first extended part includes the edge flanges extending continuously from the attachment and a pair of rising walls rising on both widthwise sides thereof. A first dynamic damper including a pair of support rubber elastic bodies and a mass member is provided between the rising walls. The second extended part includes a rising supporter rising from its end and the edge flanges being continuous with the attachment across its entire length including the rising supporter. A second dynamic damper including an inner shaft member and an outer mass member elastically connected by a main rubber elastic body is attached to the rising supporter.