Steering Wheel Acoustic Chamber for Low-Frequency Sound Output
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Solution Overview
Problem
Conventional speaker installations in steering apparatuses of vehicles face limitations in securing space for low-frequency sound output, affecting the frequency characteristics of the sound emitted.
Innovation Solution
The steering apparatus includes a rim member and a center member connected to a steering shaft, with hollowed-out spaces to accommodate sound output apparatuses on the front surface and within the rim member, creating a closed chamber configuration that enhances low-frequency sound emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If speakers are disposed in the steering apparatus, then sound output is achieved, but the space behind the speakers is limited affecting low-frequency sound output
Solution Approach 1:
The patent applies nesting by placing the speaker within the steering apparatus structure, specifically utilizing the space between the rim member and center member. The speaker is nested within the steering apparatus while the chamber unit is nested within the rim member, creating a compact integrated design that maximizes space utilization without increasing overall device complexity
Solution Approach 2:
The patent creates a three-dimensional chamber unit within the rim member that extends in multiple directions. The chamber unit includes a bottom surface, side surfaces, and a front surface that communicates with the speaker back surface, utilizing vertical and radial dimensions within the steering apparatus to maximize the space behind the speaker without increasing the footprint
2Reliability
If the steering apparatus structure is modified to accommodate sound output apparatuses, then low-frequency sound emission is enhanced, but the device complexity increases
Solution Approach 1:
The steering apparatus is designed to serve multiple functions: it maintains its primary steering function while simultaneously serving as a housing for the speaker and acoustic chamber. The rim member and center member serve both structural/steering purposes and acoustic enclosure purposes, eliminating the need for separate dedicated speaker housings and reducing overall device complexity
Solution Approach 2:
The patent merges the steering apparatus structure with the acoustic enclosure by integrating the speaker mounting and chamber formation into the existing rim member and center member components. This combining of functions allows the steering apparatus to provide both steering control and enhanced sound output without requiring additional separate 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
This configuration improves the frequency characteristics of the sound output, enabling the steering apparatus to effectively produce low-frequency sounds by securing sufficient space behind the sound output apparatuses.
Implementation Method 1
a first rim chamber unit provided in the rim member and in communication with a space behind the first sound output apparatus... This configuration improves the frequency characteristics of the sound output, enabling the steering apparatus to effectively produce low-frequency sounds
Data Source
AI summary
A steering apparatus according to an aspect of the present disclosure includes a rim member, a center member connected to a steering shaft at a rotation center of the rim member, a first sound output apparatus provided on a front surface of the rim member or the center member, and a first rim chamber unit provided in the rim member and in communication with a space behind the first sound output apparatus.