Vibration Damping Device With Extended Mounting Member
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Solution Overview
Problem
Existing vibration damping devices face challenges in maintaining the performance of the elastic body over a prolonged period due to inadequate absorption and damping of vibrations, leading to reduced effectiveness and shorter service life.
Innovation Solution
A vibration damping device with a tubular first mounting member, a second mounting member, and pressure-receiving liquid chambers, where the second mounting member extends over the entire length of the liquid chambers, allowing for significant deformation and expansion/contraction in both axial and orthogonal directions, preventing local elastic deformation and enhancing damping performance by eliminating the need for an auxiliary liquid chamber in the limiting path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the second mounting member does not extend over the entire length of the liquid chambers, then the device complexity is reduced, but the elastic body suffers local deformation leading to reduced service life
Solution Approach 1:
The second mounting member is designed to extend over the entire length of each pressure-receiving liquid chamber in the axial direction, creating different functional zones: the extended regions prevent local deformation of the elastic body at the chamber ends, while the central region allows necessary deformation for vibration damping. This localized differentiation of the mounting member's function resolves the contradiction between durability and simplicity.
2Reliability
If the first limiting path contacts the auxiliary liquid chamber, then the damping performance is improved, but the device complexity increases due to additional liquid chamber requirements
Solution Approach 1:
The invention extracts the auxiliary liquid chamber from the limiting path configuration. The first limiting path is designed to connect only the pair of first pressure-receiving liquid chambers without contacting the auxiliary liquid chamber, which is reserved exclusively for connecting to the second pressure-receiving liquid chamber. This separation simplifies the overall liquid chamber configuration while maintaining effective damping performance through dedicated chamber functions.
3Reliability
If the pressure-receiving liquid chambers are significantly expanded/contracted, then the vibration damping performance is improved, but the elastic body may suffer from excessive deformation leading to reduced durability
Solution Approach 1:
The invention optimizes the parameters of the pressure-receiving liquid chambers by ensuring the second mounting member extends over the entire length of each chamber in the axial direction. This geometric parameter change allows the chambers to expand and contract significantly for effective damping while the extended mounting member prevents excessive localized deformation of the elastic body, balancing damping performance with durability.
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 device effectively maintains the performance of the elastic body for a longer period by significantly expanding/contracting pressure-receiving liquid chambers, improving damping performance and preventing local deformation, thus enhancing the overall durability and efficiency of vibration absorption.
Implementation Method 1
the first mounting member and the second mounting member are relatively displaced in the sandwiching direction while elastically deforming the elastic body
Implementation Method 2
absorb and damps vibration along both the axial direction and a direction in which the pair of first pressure-receiving liquid chambers sandwich the second mounting member
Implementation Method 3
the liquid flows through the first limiting path, and the vibration is absorbed and damped
Implementation Method 4
the liquid flows through the second limiting path between the second pressure-receiving liquid chamber and the auxiliary liquid chamber
Data Source
Figure 1
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AI summary
In a vibration damping device (10), a plurality of pressure-receiving liquid chambers (25, 26) of which portions of wall surfaces are constituted of an elastic body (14) are disposed within the first mounting member (12). The pressure-receiving liquid chambers (25, 26) include a pair of first pressure-receiving liquid chambers (25) that communicate with each other through a first limiting path (27), and a second pressure-receiving liquid chamber (26) that communicates with an auxiliary liquid chamber (28) through a second limiting path. The pair of first pressure-receiving liquid chambers (25) sandwich a second mounting member (13) therebetween. The second pressure-receiving liquid chamber (26) is arranged side by side with the second mounting member (13) in an orthogonal direction (D1) orthogonal to both an axial direction of the first mounting member (12) and a sandwiching direction (D2) in which the pair of first pressure-receiving liquid chambers (25) sandwich the second mounting member (13). The second mounting member (13) extends over the entire length of each of the pair of first pressure-receiving liquid chambers (25) and the second pressure-receiving liquid chamber (26) in the axial direction. The first limiting path (27) does not contact the auxiliary liquid chamber (28). According to the vibration damping device (10), the performance of the elastic body (14) can be easily maintained for a prolonged period of time.