Vibration Mount Stopper Geometry for Impact Shock Absorption
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Solution Overview
Problem
Existing vibration proofing devices with small spring constants in stoppers are inadequate in absorbing impact shocks when they hit the second bracket, leading to insufficient absorption of impact shocks.
Innovation Solution
The vibration proofing device features enlarged stoppers by increasing the volume of the corresponding side walls of the first attaching member, allowing for a larger spring constant and gradual displacement relative to the load, effectively absorbing impact shocks when the stoppers hit the second bracket. This is achieved by forming the side walls to project outward and be recessed relative to the top and bottom plates, thereby increasing the cross-sectional area without increasing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring constant of each stopper is small, then the displacement amount of each stopper increases, but each stopper cannot sufficiently absorb an impact shock when it hits the second bracket
Solution Approach 1:
The patent changes the physical parameters of the stopper by enlarging its cross-sectional area and volume. This increases the spring constant of the stopper, enabling it to effectively absorb impact shocks when hitting the second bracket, while maintaining sufficient displacement capability through the enlarged elastic structure
Solution Approach 2:
The patent extends the side walls of the first attaching member in the attaching direction, increasing the stopper's volume and cross-sectional area. This dimensional expansion enhances the stopper's spring constant and energy absorption capacity without compromising its displacement functionality
2Reliability
If the side walls of the first attaching member are enlarged to increase stopper volume, then the spring constant increases, but the weight of the first attaching member increases
Solution Approach 1:
The patent optimizes the geometric parameters of the side walls to achieve the desired stopper volume and spring constant while controlling weight. By carefully designing the extension length and cross-sectional dimensions of the side walls, the patent increases the stopper's energy absorption capacity without excessive weight gain
Solution Approach 2:
The patent applies the enlargement locally to specific regions where impact absorption is needed. The side walls are extended in the attaching direction to create larger stoppers at the impact zones, while other portions of the first attaching member maintain their original dimensions, achieving localized weight optimization
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 enlarged stoppers effectively absorb impact shocks by increasing the spring constant, ensuring efficient absorption of vibrations when they hit the second bracket, thus enhancing the vibration proofing performance.
Implementation Method 1
each side wall is provided on an outer face thereof with a stopper made of an elastic material
Data Source
AI summary
A vibration proofing device (10) includes an insulator (50) interposed between a first attaching member (30) and a second attaching member (40), and is disposed in an internal space (95) of a second bracket (90). The first attaching member (30) is formed to have two side walls (33, 33) parallel to each other to face the inner face of the second bracket (90). The second attaching member (40) is a tubular member having an opening (41a) passing therethrough in an upper-lower direction. At least one of side edge portions of each side wall (33) is disposed outside the opening (41a) of the second attaching member (40). Each side wall (33) is provided on an outer face thereof with a stopper (51) made of an elastic material. With this configuration, it is possible to sufficiently absorb an impact shock resulting from the stopper (51) hitting the second bracket (90).