Tire Wheel with Integrated Resonance Pipe
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Solution Overview
Problem
Resonant sounds produced between the tire and wheel in vehicles reduce noise and vibration quality, affecting ride comfort, and existing technologies have not effectively addressed this issue.
Innovation Solution
A tire wheel design featuring a disc portion, a rim portion, and a ring-shaped resonance pipe made of a material with a higher melting point than the disc and rim, integrated through a molding process, with sound-absorbing holes to act as a Helmholtz resonator, reducing resonant noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a space is formed between the tire and the wheel, then the tire can be mounted on the wheel, but resonant sound is produced that decreases noise and vibration quality
Solution Approach 1:
The patent converts the harmful resonant sound into a beneficial effect by designing the wheel with a resonance pipe that acts as a Helmholtz resonator. The resonance pipe is tuned to resonate at the same frequency as the problematic space resonance, creating destructive interference that cancels out the harmful noise while maintaining the necessary tire mounting space.
Solution Approach 2:
The resonance pipe serves as an intermediary acoustic element between the tire-wheel space and the vehicle interior. It mediates the sound waves by absorbing and redirecting them through its specially designed hollow structure, preventing direct propagation of resonant noise into the vehicle cabin while preserving the functional space.
2Reliability
If the resonance pipe is made of a material with higher melting point, then durability is improved, but manufacturing complexity increases
Solution Approach 1:
The resonance pipe is pre-formed as a separate component using core pins before the final wheel molding process. This preliminary preparation allows the use of high-melting-point materials like steel without requiring complex in-situ formation processes, as the pre-formed pipe can be easily integrated into the wheel structure during standard molding operations.
Solution Approach 2:
Core pins act as intermediaries to hold and position the pre-formed resonance pipe during the molding process. These core pins facilitate the integration of the high-melting-point material component into the lower-melting-point wheel structure, simplifying the manufacturing process by enabling separate preparation and assembly of dissimilar materials.
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 effectively reduces resonant noise and enhances durability by integrating the disc and rim portions with the resonance pipe, simplifying manufacturing and improving noise cancellation.
Implementation Method 1
A plurality of sound absorbing holes that penetrates into an interior of the resonance pipe may be formed in the rim portion with being equally spaced along a circumference of the resonance pipe
Data Source
AI summary
A disc portion and a rim portion of a tire wheel are integrally formed simultaneously, with a resonance pipe formed between the disc and rim portions, by inserting a molten metal into a space formed by a mold combined with the resonance pipe by core pins.