Vehicle Mount With Segmented Fluid Chamber For Vibration Damping
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Solution Overview
Problem
Typical vehicle mounts fail to adequately absorb complex vibrations across a wide frequency band, leading to incomplete vibration absorption and excessive noise due to limitations in fluid-filled spaces and membrane designs.
Innovation Solution
A vehicle mount design featuring a flange, insulator, housing, and damping part with a chamber divided into two spaces by a membrane, including large and small displacement passages and a circulating passage, allowing fluid to flow through different paths to absorb vibrations effectively across a broader frequency range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluid-filled chamber is used to absorb vibration, then vibration absorption is improved, but noise occurs due to fluid contact with the chamber walls
Solution Approach 1:
A membrane is introduced as an intermediary between the fluid and the chamber walls. The membrane allows the fluid to be contained and to transmit damping forces while preventing direct contact between the fluid and the chamber walls, thereby eliminating noise generation from fluid-wall interaction.
Solution Approach 2:
The patent employs a flexible membrane to enclose the fluid within the damping element. This thin film structure transmits the damping effect of the fluid to the surrounding structure while isolating the fluid from direct contact with housing surfaces that would generate noise.
2Adaptability or versatility
If the fluid-filled space is divided into two spaces with a membrane, then the frequency band of absorbable vibration is widened, but noise due to vibration occurs
Solution Approach 1:
The damping element is segmented into multiple chambers separated by membranes. Each chamber can be tuned to different frequency ranges, allowing the overall system to absorb vibrations across a broader frequency spectrum while each individual chamber operates at optimized frequencies that reduce noise.
Solution Approach 2:
The membranes serving as separators between chambers also serve as intermediaries that prevent direct fluid contact with the housing, thereby reducing noise while maintaining the frequency-tuning benefits of the segmented design.
3Ease of manufacture
If a typical mount structure is used, then manufacturing is simple, but vibration absorption across wide frequency band is insufficient
Solution Approach 1:
The damping element is designed as a segmented structure with multiple fluid-filled chambers separated by membranes. This segmentation allows each chamber to be optimized for specific frequency ranges while maintaining a relatively simple overall construction that can be manufactured using conventional processes.
Solution Approach 2:
The patent optimizes various parameters including the volume of each chamber, the thickness and material properties of the membranes, and the viscosity of the fluids used. By carefully selecting these parameters, the system achieves broad frequency band vibration absorption while maintaining manufacturing feasibility.
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 effectively reduces noise and enhances vibration absorption across a wide frequency band, maintaining damping performance while minimizing contact between the fluid and membrane to reduce noise and production costs.
Implementation Method 1
a fluid filled in the mount so that the fluid absorbs the vibration or impact
Implementation Method 2
a membrane for circulating the fluid by communicating with the two spaces
Data Source
AI summary
The present disclosure provides a mount for a vehicle that is provided at a portion at which damping performance is desired and that is fastened by a stud bolt. The mount for the vehicle includes a flange into which the stud bolt is inserted and that supports the stud bolt, an insulator configured to surround the flange, a housing coupled to the other one of the vibrating body or the supporting body and to which the insulator is fixed, a chamber formed inside the housing as a space surrounded by the housing and the insulator, and the chamber is filled with a fluid. In addition, the mount for the vehicle includes a damping part mounted on the housing to divide the chamber into two spaces and to be disposed in the chamber. The mount for the vehicle is configured to appropriately absorb vibrations and reduce noise.