Variable Frequency Damper for Vehicle Drive Shaft
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Solution Overview
Problem
Existing damper systems for vehicle drive shafts are costly and inconvenient to manufacture, as they require multiple variations to accommodate different vehicle types, power train specifications, and regional conditions, and lack a simple method to tune damping frequencies effectively.
Innovation Solution
An integrated variable frequency damper system that adjusts rigidity using a rigidity tuning member, allowing for easy tuning of damping frequency while maintaining constant mass, and includes a display device for visual adjustment, enabling application across various drive shafts without the need for multiple damper types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple damper variations are manufactured to accommodate different vehicle types and power train specifications, then adaptability to different drive shafts is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The damper incorporates an adjustable mass mechanism that allows the operating mass to be varied dynamically. This enables a single damper design to adapt to different drive shaft resonant frequencies by changing the mass value, eliminating the need for multiple fixed-mass damper variations for different vehicle types and power train specifications.
Solution Approach 2:
The invention changes the physical parameter of mass in the damper to achieve adaptability. By providing an adjustable mass mechanism, the damper can be tuned to match different resonant frequencies of various drive shafts, effectively replacing multiple fixed designs with a single variable design.
2Ease of manufacture
If traditional dampers with fixed mass and rigidity are used, then manufacturing simplicity is maintained, but the ability to tune damping frequency for different applications is limited
Solution Approach 1:
The damper incorporates an adjustable mass mechanism that allows the operating mass to be varied dynamically. This enables a single damper design to adapt to different drive shaft resonant frequencies by changing the mass value, eliminating the need for multiple fixed-mass damper variations for different vehicle types and power train specifications.
Solution Approach 2:
The mass in the damper is divided into multiple separable components that can be independently adjusted or removed. This segmentation allows for easy modification of the total mass to tune the damping frequency, while maintaining a simple overall manufacturing process for the base damper structure.
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 solution significantly reduces development and manufacturing costs, improves NVH performance, and enhances marketability by addressing resonance-induced vibrations across different vehicle types and conditions with a single damper system.
Implementation Method 1
a hollow damper body (30) which is made of an elastic rubber material
Implementation Method 2
a hollow damper body (30) which is made of an elastic rubber material
Data Source
AI summary
A variable frequency damper for a drive shaft of a vehicle may include a mass body made of a metallic material and having mass, a damper body disposed on the drive shaft and to which the mass body is coupled, a banding member which fixes the damper body to the drive shaft, and a rigidity tuning member which is disposed on the banding member to press the damper body, and changes rigidity of the damper body depending on a degree to which the damper body is pressed.