Gear Device Radial Struts Vibration Attenuation
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Solution Overview
Problem
Existing gear systems that aim to dampen vibrations are often complex and prone to degradation, leading to reduced longevity and reliability, and mechanical dampening methods like springs do not achieve desired durability.
Innovation Solution
A gear device with radially aligned struts and resonators that attenuate vibrations, reducing noise, vibration, and harshness (NVH) by targeting specific frequency bands, and is designed to be more durable through strategic material and structural design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If complex hydraulic dampening systems with pistons and fluid chambers are used, then vibration dampening is achieved, but system complexity increases and reliability decreases
Solution Approach 1:
The patent extracts the vibration dampening function from complex hydraulic systems and implements it through simple structural features directly integrated into the gear body - specifically radially aligned struts with openings and resonators. This eliminates the need for separate pistons, fluid chambers, and hydraulic components while maintaining effective vibration control.
Solution Approach 2:
The damping structures (struts and resonators) are merged directly into the gear body structure rather than being separate components. The struts are formed as integral parts of the gear, and resonators are embedded within the gear body, combining structural support and vibration dampening functions into a single unified component.
2Object-affected harmful factors
If mechanical dampening systems with springs are used, then vibration reduction is achieved, but durability is reduced due to degradation
Solution Approach 1:
The patent replaces traditional mechanical spring-based dampening systems with a passive structural dampening mechanism using radially aligned struts with openings and resonators. This eliminates degradable mechanical components like springs while maintaining effective vibration reduction through carefully designed geometric features that dissipate vibrational energy.
Solution Approach 2:
The patent uses simple, robust structural features (struts and resonators) that are inherently more durable than spring-based systems. These features are designed to withstand repeated vibrational cycles without degradation, providing long-term reliable vibration control without the lifespan limitations of elastic materials.
3Device complexity
If traditional gear systems without specialized dampening structures are used, then system simplicity is maintained, but noise, vibration, and harshness increase
Solution Approach 1:
The patent applies vibration dampening features at specific critical locations within the gear structure - radially aligned struts positioned to intercept vibrational modes and resonators placed at strategic points to target specific frequency ranges. This localized approach provides effective NVH control while maintaining overall system simplicity.
Solution Approach 2:
The patent uses resonators designed to vibrate at specific frequencies to counteract and dampen unwanted vibrational modes in the gear system. By tuning the resonators to target problematic frequency bands, the system actively utilizes vibration to reduce overall NVH without requiring complex active control systems.
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 gear device effectively reduces NVH, increases customer satisfaction, and enhances system durability by precisely attenuating unwanted vibrations, thereby extending the gear system's longevity.
Implementation Method 1
designed to attenuate vibrations occurring during rotation of the gear device
Implementation Method 2
a plurality of resonators sequentially spaced angularly around the gear device and coupled to the plurality of radially aligned struts. The resonators enable targeted frequency bands occurring in the system
Data Source
AI summary
Gear devices and methods for operating gear devices are provided. In one example, a gear device is provided that comprises structures designed to attenuate targeted vibrations occurring during rotation of the gear device. The structures includes radially aligned struts extending between an inner carrier and an outer carrier, a plurality of openings arranged between the struts, and/or resonators extending between sequential struts.