Helmholtz Resonator Wheel Cap for Sonic Resonance Reduction
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Solution Overview
Problem
Existing methods for reducing sonic resonance in vehicle tires, such as separate resonant tubes mounted on wheels or those integrated through stir welding, are costly and labor-intensive.
Innovation Solution
A Helmholtz resonator for vehicle wheels featuring a wheel cap with an internal chamber and a connecting pipe that extends through the wheel, coupled with a nut to maintain airtightness and secure the cap to the wheel without additional mounting processes, reducing manufacturing costs and facilitating assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a resonant tube is separately mounted on a rim portion of a wheel, then sonic resonance can be reduced, but working man-hours and manufacturing costs increase due to special coupling processes such as welding
Solution Approach 1:
The resonant tube function is merged with the wheel cap structure. The wheel cap itself forms an internal chamber that acts as the resonant cavity, eliminating the need for separate resonant tubes and their complex welding couplings. This integration reduces manufacturing steps and costs while maintaining the sonic resonance reduction function.
Solution Approach 2:
The wheel cap is given multiple functions: it serves both as a cosmetic cover for the wheel and as a resonant chamber for reducing sonic resonance. The connecting pipe integrated into the wheel cap connects the internal chamber to the cavity between the wheel and tire, enabling the wheel cap to perform the resonance reduction function that previously required separate components.
2Object-affected harmful factors
If wheel stir welding is used to form a resonant tube in a cross section of a wheel, then sonic resonance can be reduced, but manufacturing costs excessively increase
Solution Approach 1:
The resonance reduction system is segmented into separate functional components: the wheel cap with internal chamber, the connecting pipe, and the cavity space between wheel and tire. This segmentation avoids the need for complex stir welding operations on the wheel itself, as the resonant structure is formed by assembling separate parts (wheel cap, pipe, wheel, tire) rather than welding into the wheel structure.
Solution Approach 2:
The connecting pipe acts as an intermediary element that connects the wheel cap's internal chamber to the cavity between the wheel and tire. This intermediary component enables the resonance reduction function without requiring direct welding or modification of the wheel structure, thereby reducing manufacturing costs while maintaining effectiveness.
3Object-affected harmful factors
If a resonant tube is separately mounted on a wheel, then sonic resonance can be reduced, but mounting complexity and time increase
Solution Approach 1:
The resonant tube function is merged with the wheel cap assembly process. Since the wheel cap with its internal chamber and connecting pipe is assembled as a unit before mounting to the wheel, the resonance reduction components are already integrated and positioned correctly, eliminating the need for separate mounting operations and reducing overall mounting time.
Solution Approach 2:
The wheel cap, connecting pipe, and resonant chamber are prepared and assembled in advance as a complete unit. This preliminary assembly ensures that all resonance reduction components are ready for installation, and the connecting pipe is pre-positioned to align with the cavity, thereby simplifying and accelerating the final mounting process on the wheel.
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
Effectively absorbs sonic resonance generated during vehicle operation, enhancing ride quality while minimizing mounting complexities and costs.
Implementation Method 1
Helmholtz resonator for vehicle wheel capable of absorbing sonic resonance, which is generated from tires during running of the vehicle
Data Source
AI summary
A Helmholtz resonator for a vehicle wheel reduces sonic resonance, which is generated in a tire during running of the vehicle, by employing a wheel cap, which has an internal chamber in the vehicle wheel cap and is closely mounted on the vehicle wheel from the outside of the vehicle wheel, a connecting pipe connecting the internal chamber in the vehicle wheel cap with the cavity in the tire and a coupling member.