Damper With Differential Elasticity Regions for Vibration Control
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Solution Overview
Problem
Existing dampers for sound reinforcement devices and musical instruments face challenges in uniformly damping both vertical and horizontal vibrations, leading to sound distortion and limited service life due to material settling under weight, especially with heavy devices.
Innovation Solution
A damper design with a front region of lower elasticity and a rear region of higher elasticity, where the rear part is fully enclosed by the housing to handle vertical vibrations effectively while limiting radial damping, ensuring stable connection to the footprint and extended service life through even force distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the damper element is made of elastic material to dampen vibrations, then vibration damping performance is improved, but the material settles under weight of heavy devices leading to limited service life
Solution Approach 1:
The damper insert is designed with different elasticity values in different regions: the front region has lower elasticity (higher hardness) to resist compression from device weight, while the rear region has higher elasticity (lower hardness) to effectively dampen vibrations. This local differentiation allows the same component to simultaneously maintain structural integrity under load and provide effective vibration damping, resolving the contradiction between reliability and service life.
2Stability of the object's composition
If the damper element is enclosed by housing to provide stable connection, then horizontal stability is improved, but vertical vibration damping capability is reduced
Solution Approach 1:
The housing encloses only the rear region of the damper insert, leaving the front region exposed. This selective enclosure allows the rear high-elasticity region to dampen vertical vibrations effectively while the front low-elasticity region maintains contact with the footprint for horizontal stability, thus resolving the contradiction between horizontal stability and vertical vibration damping.
3Reliability
If uniform damping is applied in all directions, then overall vibration reduction is improved, but sound quality deteriorates due to inability to differentiate between vertical and horizontal vibrations
Solution Approach 1:
The damper insert employs region-specific elasticity: the front region with lower elasticity handles horizontal vibrations to maintain stable connection, while the rear region with higher elasticity targets vertical vibrations for optimal sound quality. This spatial differentiation of damping characteristics allows selective vibration control that prevents sound distortion while maintaining overall vibration reduction.
Solution Approach 2:
The damper insert is functionally segmented into front and rear regions with different elastic properties. This segmentation enables independent optimization of damping characteristics for different vibration directions, allowing the system to reduce overall vibrations while maintaining sound quality by treating vertical and horizontal vibrations differently.
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 design maintains sound quality by effectively damping vertical vibrations while maintaining a stable connection in the horizontal direction, enhancing mechanical stability and service life by preventing material compression and ensuring consistent sound properties.
Implementation Method 1
a first elasticity of the front region of the damper insert is less than a second elasticity of a rear region of the damper insert
Data Source
Figure 1~2
Figure 3~4
AI summary
A damper (1) for installation between a sound reinforcement or consumer electronics device, in particular an audio playback device, or a musical instrument and a surface, comprises a housing (10) for mounting on the device or musical instrument and a damper insert (20) made of an elastic material. The damper insert (20) can be inserted into the housing (10) such that, when the housing (10) is attached, a front portion (21.2) of the damper insert (20) partially protrudes from the housing (10) in a direction away from the device or musical instrument. The first elasticity of the front portion (21.2) of the damper insert (20) is less than the second elasticity of a rear portion (21.1) of the damper insert (20), which contacts the housing (10) on its outer surface.