Headrest Acoustic Layout for Shock-Resistant Voice Collection
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Solution Overview
Problem
Conventional headrest devices face challenges in reducing shock transmission when incorporating acoustic devices, such as speakers and microphones, which often come into contact with the user's head, making it difficult to meet shock absorption standards while maintaining performance.
Innovation Solution
A headrest device design featuring a shock-resistant surface with an opening for a non-contact type acoustic microphone positioned inside, along with sound collecting mechanisms and multiple speakers disposed around the microphone to enhance sound collection and reduce shock transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an acoustic device (speaker or microphone) is provided in the headrest or in the vicinity of the front surface of the headrest, then the performance of the acoustic device can be efficiently exhibited, but the acoustic device touches the head to cause a shock that fails to satisfy safety standards
Solution Approach 1:
The patent introduces a shock-resistant surface as an intermediary layer between the acoustic device and the user's head. This surface is formed by covering the acoustic device with a material having shock resistance (such as foam or rubber) that extends to the front surface of the headrest, allowing the acoustic device to function efficiently while preventing direct contact and shock transmission to the user's head.
2Reliability
If the acoustic device is positioned closer to the front surface of the headrest for better sound collection and output, then acoustic performance is improved, but the risk of head contact and shock increases
Solution Approach 1:
The shock-resistant surface material acts as a mediator that allows the acoustic device to be positioned close to the front surface for optimal sound collection while preventing direct head contact. The material's shock-resistant properties ensure that even when the head presses against the headrest, the acoustic device is protected from direct impact.
Solution Approach 2:
The patent uses a flexible shock-resistant material (such as foam or rubber) that can deform under pressure to accommodate head contact while protecting the rigid acoustic device underneath. This flexible layer absorbs the shock and allows the acoustic device to maintain its optimal positioning for sound collection.
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 design effectively reduces shock transmission, allowing for efficient acoustic performance while meeting safety standards by positioning the microphone and speakers to minimize contact and optimize sound collection.
Implementation Method 1
a non-contact type acoustic microphone is disposed on the inner side of the opening
Implementation Method 2
A sound collecting mechanism may be disposed between the opening of the core material and the acoustic microphone
Data Source
AI summary
To make it possible to provide an acoustic device in a headrest device such that a standard of a shock is satisfied and the performance of the acoustic device can be efficiently exhibited. In the headrest device, a shock resistant surface is formed in a core material of a headrest main body, an opening is formed in the shock resistant surface, and a non-contact type acoustic microphone is disposed on the inner side of the opening.