Transmission Mount Stopper for Vibration Attenuation
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Solution Overview
Problem
Conventional transmission mounts, such as hydro engine mounts, face increased cost and weight while attempting to effectively reduce vibration and noise, and require complex structures to restrict center core movement in both vertical and lateral directions for improved steering performance.
Innovation Solution
A transmission mount design incorporating a stopper with a vertical movement restrictor and a lateral movement restrictor, formed from materials like rubber or polyurethane, which are separately assembled to restrict the center core's movement, allowing for adjustable stiffness and reduced complexity by using a connector system with protrusions and latches to prevent vertical and lateral displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a hydro engine mount is used to reduce vibration and noise, then the attenuation effect is improved, but the cost and weight are increased substantially
Solution Approach 1:
The transmission mount is divided into separate functional components: a rubber insulator for vibration attenuation, a center core for structural support, and a stopper mechanism for movement restriction. This segmentation allows each component to be optimized independently, using simple rubber materials rather than complex hydro liquid systems, thereby reducing weight and cost while maintaining vibration attenuation effectiveness.
Solution Approach 2:
The patent uses inexpensive rubber materials for the insulator and stopper components instead of expensive hydro liquid systems. The rubber components are designed to be simple, replaceable parts that provide the necessary vibration attenuation without the complexity and high cost of hydro engine mounts, achieving cost reduction while maintaining functional performance.
2Object-affected harmful factors
If a hydro engine mount is used to reduce vibration and noise, then the attenuation effect is improved, but the structure becomes complex
Solution Approach 1:
The transmission mount is divided into separate functional components: a rubber insulator for vibration attenuation, a center core for structural support, and a stopper mechanism for movement restriction. This segmentation allows each component to be optimized independently, using simple rubber materials rather than complex hydro liquid systems, thereby reducing weight and cost while maintaining vibration attenuation effectiveness.
Solution Approach 2:
The patent extracts the essential vibration attenuation function from the complex hydro engine mount system and implements it using simple rubber insulator materials. By taking out only the necessary damping function and implementing it through conventional rubber components with a stopper mechanism, the design eliminates the complexity of hydro liquid systems while preserving the vibration and noise reduction capabilities.
3Ease of operation
If the center core movement is restricted in lateral direction to improve steering performance, then the steering performance is improved, but additional structural elements are required
Solution Approach 1:
The stopper mechanism combines multiple functions into a single integrated component: it restricts vertical movement through its main body, restricts lateral movement through protrusions that engage with grooves, and provides structural connection between the insulator and mounting bracket. This merging of functions into one component achieves lateral movement restriction for improved steering performance without adding separate complex structural elements.
Solution Approach 2:
The stopper is designed as a multi-functional component that simultaneously performs vertical movement restriction, lateral movement restriction through protrusion-groove engagement, and structural connection. This universal design achieves steering performance improvement through lateral restriction while avoiding the need for additional dedicated structural elements, as the stopper itself provides all necessary constraints.
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 solution provides enhanced vibration attenuation and steering performance by restricting center core movement, minimizing cost and weight increases, and simplifying the structure through dualized material usage, while maintaining effective noise reduction.
Implementation Method 1
The stopper may be formed of a rubber material which is the same as a material for the insulator. Alternately, the stopper may be formed of a polyurethane material which is different from a material for the insulator.
Implementation Method 2
a hydro engine mount (fluid-enclosed engine mount) configured to enclose a predetermined amount of hydro liquid has been developed... capable of simultaneously attenuating vibrations in a high-frequency region and a low-frequency region
Data Source
AI summary
A transmission mount is provided that has a stopper which is separately assembled from an insulator to obtain an improved attenuation effect. The transmission mount includes a transmission mount bracket and an insulator that has a body press-fitted into the transmission mount bracket and a center core disposed therein. The insulator includes a base supported on a bottom surface of the transmission mount bracket and a connector that connects the body and the base. A stopper is provided that includes a vertical movement restrictor configured to come into contact with a lower portion of the body and an upper portion of the base to restrict a vertical movement of a center core and a lateral movement restrictor configured to come into contact with sides of the base to be latched with the sides of the base to restrict a lateral movement of the center core.