Gas Spring Isolator Layout for Larger Air Chamber Volume
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing gas spring type vibration isolators face a challenge in increasing the volume of the gas chamber of the up-down gas spring without deteriorating the material yield during the processing of the fixed base, which is typically made of steel.
Innovation Solution
The solution involves attaching a horizontal gas spring to the outer circumferential surface of the up-down gas spring's recess formation member, rather than recessing it, allowing for an increase in the gas chamber volume without material yield deterioration. This configuration includes a piston with a load receiving member and a tubular piston body that swings to absorb vibrations, reducing the natural frequency in the up-down direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the recess of horizontal gas springs is provided in the side wall member of the fixed base, then the horizontal gas springs can be supported, but the volume of the gas chamber of the up-down gas spring cannot be increased
Solution Approach 1:
The horizontal gas spring is separated from the fixed base structure and attached as an independent component to the outer circumferential surface of the up-down gas spring's recess formation member. This segmentation allows the up-down gas spring's gas chamber volume to be increased without being constrained by the fixed base's recess configuration, while the horizontal gas spring maintains its support function through separate attachment.
Solution Approach 2:
The horizontal gas spring is attached to the outer circumferential surface of the up-down gas spring's recess formation member, creating a nested configuration where one gas spring structure is positioned on the surface of another. This nesting approach allows both gas springs to coexist without interfering with each other's gas chamber volumes, enabling the up-down gas spring to have a larger gas chamber while the horizontal gas spring provides lateral support.
2Volume of moving object
If an annular protrusion is provided instead of recess to partition the gas chamber, then the gas chamber volume can be increased, but material yield deteriorates due to shaving process
Solution Approach 1:
The horizontal gas spring is divided into a separate attachable component rather than being integrated as a protrusion from the fixed base. This segmentation eliminates the need for shaving material from the fixed base to create protrusions, thereby preventing material yield deterioration while still achieving the desired gas chamber volume through the attached horizontal gas spring structure.
Solution Approach 2:
The outer circumferential surface of the up-down gas spring's recess formation member serves as an intermediary surface for attaching the horizontal gas spring. This intermediary attachment point allows the horizontal gas spring to be positioned without requiring material removal from the fixed base, thus avoiding the shaving process and its associated material yield deterioration.
3Volume of moving object
If the horizontal gas spring is detachably attached to the outer circumferential surface of the up-down gas spring, then the gas chamber volume can be increased without material yield deterioration, but the attachment strength must be sufficient
Solution Approach 1:
The horizontal gas spring is designed as a detachable component attached to the up-down gas spring's recess formation member. This segmentation enables the horizontal gas spring to be separately manufactured and attached, allowing the up-down gas spring to have a larger gas chamber volume without requiring material removal from the fixed base, while the attachment mechanism ensures sufficient strength through proper design of the attachment interface.
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 approach effectively increases the volume of the gas chamber of the up-down gas spring, reduces material yield deterioration, and enhances vibration isolation performance by lowering the natural frequency and improving attachment strength and modularity of the horizontal gas spring.
Implementation Method 1
a diaphragm that blocks between the piston and an opening circumferential edge of the recess to partition a gas chamber
Implementation Method 2
a tubular piston body member spaced apart from the load receiving member on the axially other side and elastically held by the diaphragm to be swingable around a freely selected axis in a direction orthogonal to the center axis
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An isolator (2) includes an up-down air spring (S1) that supports a mounting board (3) in the up-down direction and a horizontal air spring (S2, S2, ...) that supports the mounting board (3) in the horizontal direction. Each of the air springs (S1, S2, S2, ...) has an inner casing (20), an outer casing (200), a piston (30, 300), and a diaphragm (40, 400) that partitions an air chamber (23, 230). The air spring (S2, S2, ...) is detachably attached to an outer circumferential surface portion of the inner casing (20) in the air spring (S1).