Powertrain Buffer With Ramp Deflecting Battery Upwards
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Solution Overview
Problem
Existing powertrain fixing devices in vehicles primarily focus on maintenance and do not adequately address the issues of vibration transmission and collision safety, leading to increased costs and complexity, and do not effectively prevent damage to vital components during frontal impacts.
Innovation Solution
A powertrain fixing device with a buffer system that includes a ramped component to deflect components like the battery upwards during collisions and additional mass to enhance vibration damping, comprising a first ramp, a hollow insert, and indexing features for secure positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional components or devices are installed in the vehicle to address collision safety and vibration damping, then the protection of vital organs and vibration reduction is improved, but the costs of supply and assembly, complexity and internal bulk increase
Solution Approach 1:
The patent combines multiple functions into a single buffer component: vibration damping (through elastomeric material), collision protection (through the ramp structure that deflects objects), and mass addition (through the heavy part with 150-700g). This integration eliminates the need for separate protective devices and vibration control systems, thereby reducing overall complexity while maintaining reliability
Solution Approach 2:
The buffer component serves multiple purposes simultaneously: it acts as a vibration isolator between the powertrain and vehicle body, a collision protection device that deflects objects away from vital organs, and a mass addition element for improving vibration damping characteristics. This multi-functionality resolves the contradiction by achieving enhanced protection without proportionally increasing system complexity
2Loss of energy
If a damping pad is used to reduce vibration transmission, then vibration damping is improved, but during frontal impact the fixing lug breaks which may not adequately protect vital organs
Solution Approach 1:
The ramp structure is pre-configured in the buffer component to actively deflect objects away from vital organs before collision occurs. This proactive geometric design provides inherent collision protection that works in conjunction with the passive vibration damping of the elastomeric material, ensuring both vibration reduction and reliable collision protection without relying on component failure
Solution Approach 2:
The buffer component combines elastomeric material (for vibration damping) with a heavy part made of denser material (for mass and collision protection). This composite construction allows the damping pad to effectively reduce vibrations while the integrated heavy part with ramp structure provides enhanced collision protection, resolving the limitation of using damping material alone
3Loss of energy
If the part has greater mass (150g-700g) to enhance vibration damping, then vibration reduction is improved, but the weight of the fixing device increases
Solution Approach 1:
The patent specifies a mass range (150g-700g, preferably 300g-400g) for the heavy part, allowing optimization of the mass parameter to achieve sufficient vibration damping while controlling the weight increase. This parameter optimization resolves the contradiction by finding the optimal balance between vibration energy dissipation and weight addition
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 reduces the risk of collision damage to vital components by deflecting them upwards and enhances vibration damping by adding mass to the system, thereby improving safety and reducing noise and assembly complexity.
Implementation Method 1
In the event of a violent frontal impact of the vehicle, the force of inertia of the various components of the vehicle tends to detach them from their supports to project them forwards
Implementation Method 2
a buffer (13) to reduce the transmission of vibrations between the powertrain engine and body
Implementation Method 3
The viscoelastic properties of the elastomeric material make it possible to obtain a vibration damping coefficient
Implementation Method 4
The additional mass of this part makes it possible to dampen the vibrations of the powertrain
Data Source
AI summary
The invention relates to device for attaching a powertrain (16) to a motor vehicle body, comprising a front surface and a buffer (13) for reducing the transmission of vibrations between the powertrain and the body. The device comprises a part (10) arranged at the top of the buffer (13) and having at least one ramp (31), on a surface opposite the front surface, that rises gradually in the direction of said front surface.