Liquid Seal Mount Diaphragm Assembly With Inclination Control
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Solution Overview
Problem
The existing liquid seal type vibration isolation devices face difficulties in assembling the diaphragm due to the annular member's enlarged inner diameter, which leads to inclination issues when stacked on partitions with multiple wall portions, making it challenging to perform diameter reduction processing effectively.
Innovation Solution
A liquid seal type vibration isolation device with a diaphragm and annular member where the annular member has a thinner radial thickness, featuring a contact portion that regulates inclination by contacting wall portions on the partition, allowing for proper assembly even with enlarged inner diameters, and a manufacturing method involving initial stacking and subsequent diameter reduction of the second member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner diameter of the annular member is enlarged to improve diaphragm durability, then the free length of the diaphragm is increased, but the annular member becomes inclined when stacked on the partition, making assembly difficult
Solution Approach 1:
The contact portion acts as an intermediary element between the annular member and the partition wall portions. It provides a stable contact interface that prevents the annular member from becoming inclined during assembly, thereby enabling easy assembly while maintaining the enlarged inner diameter configuration that improves diaphragm durability
Solution Approach 2:
The contact portion is specifically positioned at the location where contact with the partition wall portions is needed to regulate inclination. By concentrating the inclination-regulating function at this specific local area rather than redesigning the entire annular member or partition structure, the solution maintains the beneficial enlarged inner diameter while solving the assembly difficulty
2Length of stationary object
If the thickness in the radial direction of the annular member is made thin to ensure large inner diameter, then the diaphragm free length is increased, but the annular member easily enters between the second fixture and partition when shifted, causing inclination
Solution Approach 1:
The contact portion serves as a mediator that provides stable contact with the partition wall portions, preventing the thin annular member from shifting and becoming inclined when the inner diameter is enlarged. This allows the annular member to maintain its thin profile for maximum diaphragm free length while ensuring positional stability during assembly
3Strength
If multiple wall portions are formed on the outer edge of the partition, then the partition structure is enhanced, but the contact area between the annular member and partition is reduced, facilitating unintended inclination
Solution Approach 1:
The contact portion acts as an intermediary that bridges the gap between the multiple wall portions of the partition and the annular member. It provides a continuous contact interface that spans across the wall portions, ensuring stable alignment and preventing inclination even when the annular member is shifted, thereby maintaining ease of assembly while preserving the structurally enhanced partition design
Data Source
AI summary
To provide a liquid seal type vibration isolation device to which a diaphragm can be appropriately assembled, and a method for manufacturing the liquid seal type vibration isolation device. Even if the annular member 16 is shifted in a radial direction, the contact portion 15a and the wall portions 23 are in contact with each other, to regulate an inclination of the annular member 16 to the partition 20. The diameter reduction processing is performed on the second fixture 12 in this state in which the inclination is regulated, whereby the diaphragm 15 (annular member 16) can be fixed on an inner circumference side of the second fixture 12 at an appropriate angle.