Vehicle Headrest Speaker Airbag Collision Safety
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Solution Overview
Problem
There are safety concerns regarding the placement of speakers near passengers' heads in motor vehicles, as they can potentially cause injury during collisions due to their hard and/or sharp parts.
Innovation Solution
A loudspeaker arrangement is integrated into the headrest of a motor vehicle, equipped with a collision sensor, an air bag, and a spider/cone configuration that can absorb impact or detach upon collision, ensuring passenger safety by deploying an air bag or breaking away from the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If speakers are placed near passengers' heads in motor vehicles, then audio sound quality is improved, but passenger safety deteriorates due to hard and/or sharp parts causing potential injury during collisions
Solution Approach 1:
The patent integrates an air bag directly into the speaker assembly, positioned to deploy between the speaker's hard components and the passenger's head during a collision. This beforehand cushioning mechanism is pre-positioned to immediately protect the passenger when the collision occurs, resolving the contradiction by maintaining speaker placement for audio quality while eliminating injury risk through the deployed air cushion.
Solution Approach 2:
The patent combines the air bag safety mechanism with the speaker assembly into a single integrated unit. The air bag is housed within or directly attached to the speaker structure, allowing both audio reproduction and collision protection functions to coexist in the same component location. This merging resolves the technical contradiction by making the safety feature inherent to the speaker rather than a separate system.
2Reliability
If traditional hard speaker components are used, then audio performance is maintained, but passenger protection during collision deteriorates
Solution Approach 1:
The air bag is pre-positioned within the speaker assembly to deploy during collision, creating a protective cushion between the hard speaker components and the passenger. This beforehand cushioning allows the speaker to maintain its structural integrity for audio performance while the deployed air bag eliminates impact injury risk.
Solution Approach 2:
The patent changes the physical state of the protective mechanism from solid (hard speaker components) to gas (deployed air bag). The air bag transitions from a compressed state during normal operation to an expanded state during collision, fundamentally changing the interaction parameter between the speaker assembly and passenger from hard contact to soft cushioning, thereby maintaining audio performance while preventing injury.
Data Source
AI summary
A loudspeaker arrangement in a motor vehicle includes a collision sensor transmitting a collision signal in response to detecting that the motor vehicle has been in a collision. An audio system transmits an audio signal. A loudspeaker includes an air bag connected thereto. The loudspeaker is coupled to the audio system and produces audible sounds based on the audio signal. The air bag is coupled to the collision sensor and is activated in response to the collision sensor transmitting the collision signal.