Multi-Leg Isolator Assembly for Broad-Frequency Vibration Damping
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Solution Overview
Problem
Existing damping and isolator assemblies do not adequately damp or isolate vibrations across all frequencies, and may not be configured for specific applications.
Innovation Solution
The proposed isolator assembly includes a bracket connected to a first and second isolator via a mass, with the isolators featuring radial flanges and legs that are designed to limit movement and absorb vibrations, allowing for customizable frequency behavior by varying the number and configuration of legs and support members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing damping or isolating designs are used, then the structure is simple, but they do not adequately damp or isolate vibration across all frequencies
Solution Approach 1:
The isolator is divided into multiple discrete legs (typically three or four) that extend radially from a central body. Each leg can be independently designed with specific dimensions and material properties to target different frequency ranges, allowing the overall isolator to effectively damp vibrations across a broader frequency spectrum while maintaining a relatively simple overall structure.
Solution Approach 2:
Different portions of the isolator structure are designed with different properties to optimize performance at specific frequencies. The legs may have varying lengths, thicknesses, or cross-sectional areas, and the central body may have non-uniform geometry, allowing each local region to contribute to damping specific frequency components of the vibration.
2Reliability
If the number and configuration of legs are increased to improve frequency behavior, then vibration damping improves, but manufacturing complexity increases
Solution Approach 1:
Multiple functional elements are combined into a single integrally formed isolator component. The central body and multiple legs are formed as one piece from a single material, eliminating the need for separate manufacturing and assembly steps for each leg. This allows optimization of leg configuration for frequency control while maintaining manufacturing simplicity through integral forming processes.
3Ease of operation
If radial flanges are designed with different outer diameters, then insertion control and removal force are improved, but the design complexity increases
Solution Approach 1:
The radial flanges are designed with asymmetric dimensions, where each flange has a different outer diameter tailored to its specific function. This asymmetric configuration provides optimized insertion control for some flanges while providing enhanced removal force for others, all within a relatively simple geometric framework that does not require complex multi-component assemblies.
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 configuration effectively absorbs and damps vibrations across a range of frequencies, providing improved isolation and movement limitation, suitable for various applications including vehicle components.
Implementation Method 1
an isolator assembly may include a bracket, a first isolator connected to the bracket, a second isolator connected to the bracket, and/or a mass connected to the bracket via the first isolator and the second isolator
Implementation Method 2
The first isolator and the second isolator may include a plurality of legs
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
An isolator assembly (10, 210) includes a bracket (12, 212), a first isolator (14, 214) connected to the bracket (12, 212), a second isolator (16, 216) connected to the bracket (12, 212), and/or a mass (18, 2218) connected to the bracket (21, 212) via the first isolator (14, 214) and the second isolator (16, 216). The first isolator (14, 214) and the second isolator (16, 216) may include a plurality of legs (80). The first isolator (14, 214) may include a first radial flange (62, 262) and a second radial flange (64, 264). The first radial flange (62, 262) and the second radial flange (64, 264) may be axially spaced from each other. An outer diameter (62D, 262D) of the first radial flange (62, 262) may be larger than an outer diameter (64D, 264D) of the second radial flange (64, 264). A distance (D1, D2) between the first radial flange (62, 262) and the second radial (64, 264) flange may correspond to a thickness of the bracket (12, 212).