Stacked Multi-Chamber Vehicle Mount for EV Vibration Damping
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Solution Overview
Problem
Conventional vehicle mounts for electric vehicles, particularly those with power electric systems, face challenges in effectively damping vibrations and noise due to their smaller weight and higher dynamic characteristics, leading to deteriorated handling performance and increased NVH (noise, vibration, and harshness).
Innovation Solution
A vehicle mount with a stacked multi-chamber air or hydraulic damping structure, featuring an internal pipe coupled to a vehicle-mounted device, an insulator with vertically spaced fluid-filled chambers, and flow path plates allowing fluid movement between chambers, integrated with a fork portion to enhance damping performance and increase the pumping area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional bush-type mount is used for electric vehicles, then the mounting structure is simple and easy to manufacture, but the damping performance is insufficient leading to increased noise and vibration
Solution Approach 1:
The insulator is divided into multiple chambers (first chamber, second chamber, third chamber, fourth chamber) that are vertically spaced from each other. Each chamber can independently damp vibrations, providing cumulative damping effect while maintaining a compact stacked structure that is relatively simple to manufacture.
Solution Approach 2:
The flow path plate is integrated within the insulator structure, with flow paths formed inside the insulator body. The chambers are nested vertically within the insulator, creating a compact multi-chamber configuration that improves damping performance without significantly increasing external dimensions or manufacturing complexity.
2Weight of moving object
If the weight of vehicle-mounted devices is reduced in electric vehicles, then energy efficiency improves, but vibration and noise insulation performance deteriorates
Solution Approach 1:
The multi-chamber insulator structure provides enhanced damping performance per unit weight compared to conventional single-chamber mounts. By dividing the damping function across multiple vertically-spaced chambers, the system achieves superior vibration and noise insulation without requiring a proportional increase in overall weight.
Solution Approach 2:
The flow path plate enables fluid (air or hydraulic fluid) to move between chambers, creating pneumatic or hydraulic damping effects. This fluid-based damping mechanism provides effective vibration and noise insulation with relatively lightweight construction, suitable for electric vehicle applications where weight is critical.
3Object-affected harmful factors
If a multi-chamber air or hydraulic damping structure is implemented, then damping performance and noise insulation are significantly improved, but the structural complexity increases
Solution Approach 1:
The flow path plate is merged with the insulator structure, with flow paths formed integrally within the insulator body rather than as separate components. The multiple chambers are combined in a vertical stacked arrangement, creating a unified multi-chamber insulator that improves damping performance while minimizing the increase in structural complexity.
Solution Approach 2:
The flow path plate and chambers are nested within the insulator structure, with the flow paths contained inside the insulator body. This nested configuration allows the complex multi-chamber damping system to be compactly integrated without requiring additional external structural elements, thereby limiting the increase in overall structural complexity.
4Object-affected harmful factors
If vertically spaced chambers are used in the insulator, then the pumping area and damping value are increased, but the manufacturing precision requirements increase
Solution Approach 1:
The multiple chambers and flow paths are merged into a single integrated insulator structure, formed as one piece during the molding process. This integration eliminates the need for separate assembly of chambers, thereby reducing the cumulative alignment precision requirements while still achieving the desired pumping area and damping value through the vertical chamber configuration.
Solution Approach 2:
The chambers are nested vertically within the insulator in a standardized stacked arrangement, with flow paths contained within the insulator body. This nested configuration allows for consistent chamber spacing and alignment to be built-in during molding, reducing the need for post-manufacturing adjustment and lowering overall precision requirements compared to assembled multi-component structures.
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 significantly improves damping performance, reduces noise and vibration, and enhances handling by increasing the damping value and size, while maintaining durability and dynamic characteristics, effectively addressing the limitations of conventional bush-type mounts.
Implementation Method 1
A vehicle mount with a stacked multi-chamber air or hydraulic damping structure, featuring an internal pipe coupled to a vehicle-mounted device, an insulator with vertically spaced fluid-filled chambers, and flow path plates allowing fluid movement between chambers
Implementation Method 2
A vehicle mount with a stacked multi-chamber air or hydraulic damping structure, featuring an internal pipe coupled to a vehicle-mounted device, an insulator with vertically spaced fluid-filled chambers, and flow path plates allowing fluid movement between chambers
Implementation Method 3
the rubber 3 serves to insulate vibration transmitted through the internal pipe 2 from the motor and the reducer, preventing the vibration from being transmitted to the external pipe 4
Implementation Method 4
a rubber (also referred to as an 'insulator') 3 vulcanized and molded into a predetermined shape and provided on an external diameter portion of the internal pipe 2
Data Source
AI summary
A vehicle mount includes an internal pipe coupled to a vehicle-mounted device, an insulator molded to be integrated with an external diameter portion of the internal pipe, the insulator including a stacked structure formed therein and configured to allow a plurality of chambers to be vertically spaced from each other, a flow path plate formed to provide a flow path configured to allow fluid to be movable between the chambers in a state of being coupled to an external peripheral surface of the insulator and sealing the chambers including the stacked structure, and an external pipe coupled to and configured to surround the insulator and the flow path plate and coupled to a vehicle body side portion. It is an object of the present disclosure to provide the vehicle mount including an improved air damping mount structure configured for increasing a damping effect.