Fluid-filled Vibration Damping Device with Pre-assembled Partition Member
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Solution Overview
Problem
The existing fluid-filled vibration damping devices face challenges in assembling the partition member with a movable membrane in air, leading to difficulties in eliminating air within the fluid chamber, which complicates the manufacturing process and can affect vibration damping performance.
Innovation Solution
The fluid-filled vibration damping device incorporates a partition member with overlapping first and second partition plates, featuring claw-shaped parts and perforation windows for fixation, and a widening area with air vent holes to facilitate air removal, allowing for pre-assembly in air and easy integration within a non-compressible fluid environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the partition member is assembled in air before fluid filling, then assembly complexity is reduced and part management is simplified, but air remains trapped in the holding area affecting vibration damping performance
Solution Approach 1:
The partition member is pre-assembled in air before being installed in the fluid-filled vibration damping device. This preliminary assembly action simplifies the manufacturing process and part management, while the subsequent fluid filling process automatically eliminates trapped air through displacement
Solution Approach 2:
The non-compressible fluid is used to displace and eliminate air from the holding area and fluid chamber. The fluid filling process utilizes hydraulic principles where the incompressible fluid pushes air out through designated paths, ensuring no air remains to affect vibration damping performance
2Device complexity
If the partition member components are assembled separately in air, then part management and transport become troublesome, but assembling in fluid is complex and requires simultaneous attachment work
Solution Approach 1:
The first partition plate, second partition plate, and movable membrane are combined to form an integrated partition member assembly. This merging of components into a single pre-assembled unit simplifies parts management and transport, while the modular design allows for straightforward installation in the fluid-filled device
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 simplifies the assembly process, reduces part management and transport complexities, and effectively prevents air from remaining in the fluid chamber, thereby enhancing vibration damping performance.
Implementation Method 1
pressures of the first fluid chamber and the second fluid chamber are applied to opposite surfaces of the movable membrane through the communicating holes so that the movable membrane undergoes elastic deformation based on pressure difference
Implementation Method 2
the movable membrane undergoes elastic deformation based on pressure difference between the first fluid chamber and the second fluid chamber
Implementation Method 3
a main rubber elastic body elastically connecting the first and second mounting members
Data Source
AI summary
A fluid-filled vibration damping device including: a partition member having first and second partition plates overlapping, and a holding area formed between overlapping surfaces of center parts of the two partition plates; and a movable membrane held and arranged in the holding area. A claw-shaped part and a perforation window are formed at respective corresponding positions of outer circumference parts of the two partition plates, and a fixing mechanism is constituted with the claw-shaped part latched in a circumference edge part of the perforation window. A widening area is provided between an outer circumference surface of the movable membrane and an inner circumference surface of the holding area by partially making a large distance therebetween. At least one of the two partition plates has a first air vent hole piercing a part constituting a wall part of the widening area.