Liquid Seal Vibration Isolator Membrane for Durable Orifice Blocking
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Solution Overview
Problem
The durability of valve portions in existing liquid seal type vibration isolation devices is compromised due to deformation of one valve portion when switching from an opened to a blocked state, leading to reduced effectiveness.
Innovation Solution
A liquid seal type vibration isolation device with a switching membrane that includes a plate portion sandwiched between partition plates, featuring tubular valve portions with inclined surfaces that allow independent deformation, recesses, and projections to enhance durability and sensitivity of the valve portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pair of annular valve portions protrude from the support portion toward both sides in the axial direction, then the orifice can be blocked when liquid flow causes the valve portion to fall down and contact the inner wall, but one valve portion becomes deformed and separated from the inner wall, reducing durability
Solution Approach 1:
The valve mechanism is divided into independent first and second valve portions that can operate independently. Each valve portion can fall down and contact the inner wall of the orifice separately, ensuring that if one valve portion is deformed, the other can still perform the blocking function. This segmentation improves reliability while reducing the durability burden on each individual valve portion.
Solution Approach 2:
The first and second valve portions are positioned at different locations within the orifice, allowing them to have different functional roles. The first valve portion primarily handles blocking, while the second valve portion can serve as a backup or handle different flow conditions. This local differentiation ensures that deformation of one valve portion does not compromise the overall system durability.
2Reliability
If the valve portion deforms to block the orifice, then the blocking function is achieved, but the deformation decreases the durability of the valve portion
Solution Approach 1:
The valve is segmented into multiple independent valve portions that can operate independently. When blocking is needed, only one valve portion needs to deform and contact the inner wall, while the other remains intact. This segmentation distributes the mechanical stress and deformation burden, improving the overall durability of the valve system while maintaining reliable blocking function.
Solution Approach 2:
The second valve portion serves as a backup copy or alternative to the first valve portion. If the first valve portion becomes deformed or fails, the second valve portion can take over the blocking function. This redundancy ensures that the blocking function is maintained while reducing the durability requirements for each individual valve portion.
3Duration of action of stationary object
If one valve portion deforms and separates from the inner wall, then the blocking effectiveness is reduced, but the other valve portion remains intact
Solution Approach 1:
The valve system includes a backup valve portion that serves as a copy or alternative to the primary valve portion. If the primary valve portion deforms or fails to block effectively, the backup valve portion can compensate and maintain the blocking function. This redundancy ensures that blocking effectiveness is maintained even when one valve portion deteriorates.
Solution Approach 2:
The second valve portion acts as a pre-prepared backup that compensates for potential failure of the first valve portion. By having this backup in place beforehand, the system ensures that blocking effectiveness is maintained even if one valve portion deforms or separates from the inner wall during operation.
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 solution improves the durability and sensitivity of the valve portions by allowing independent deformation, maintaining consistent thickness and reducing strain concentration, thereby enhancing the device's performance and longevity.
Implementation Method 1
a switching membrane (40, 61, 80) made of an elastic body and configured to switch between an opened state and a blocked state of the orifice
Implementation Method 2
a vibration-isolating base body made of an elastic body and connecting the first member and the second member
Implementation Method 3
a diaphragm made of an elastic body and mounted on the second member to form a liquid chamber in which a liquid is sealed
Data Source
AI summary
A plate portion of a switching membrane is sandwiched between a first partition plate and a second partition plate. A pair of tubular valve portions protrude from an entire circumference of a circumferential edge portion of the plate portion toward both sides in a plate thickness direction of the plate portion. An inclined surface inclined toward a side away from an opposing wall surface in a radial direction while extending toward a center in the plate thickness direction of the plate portion is formed in a circumferential surface of the switching membrane at a position including the circumferential edge portion of the plate portion.