Vehicle Headrest Speaker Layout Against Front-Load Deformation
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Solution Overview
Problem
The existing headrest designs with speakers and connecting members are prone to deformation due to loads applied from the front, leading to misalignment and potential damage.
Innovation Solution
A headrest configuration with speakers positioned outside vertical frames and a connecting member located rearward of a horizontal frame, supported by vertical frames and reinforced with additional structures to prevent deformation and maintain component alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If speakers and connecting member are arranged frontward of the headrest frame, then the headrest structure is simplified and easier to manufacture, but the speakers and connecting member are prone to deformation when loads are applied from the front
Solution Approach 1:
The patent repositions the connecting member from a frontward arrangement to a rearward arrangement relative to the horizontal frame, effectively moving components to a different spatial dimension. This dimensional repositioning allows the connecting member to be positioned in a region less susceptible to frontward loads, thereby reducing deformation while maintaining manufacturing simplicity
Solution Approach 2:
The horizontal frame acts as an intermediary structure between the vertical frames and the connecting member. By positioning the connecting member rearward of the horizontal frame, the horizontal frame serves as a protective mediator that shields the connecting member and speakers from direct frontward loads, reducing deformation without complicating the manufacturing process
2Ease of operation
If speakers are positioned outside the vertical frames, then sound output toward the occupant is improved, but the speakers become more exposed to frontward loads causing deformation
Solution Approach 1:
The horizontal frame serves as a protective intermediary structure positioned between the frontward loads and the speakers. By locating the connecting member rearward of the horizontal frame, the horizontal frame acts as a shield that reduces the direct impact of frontward loads on the speakers while allowing them to remain positioned outside the vertical frames for effective sound output
Solution Approach 2:
The connecting member is extracted from the frontward arrangement and repositioned to a rearward location relative to the horizontal frame. This extraction removes the connecting member and speakers from the high-stress frontward load zone while preserving their functional positioning for sound output toward the occupant
3Length of moving object
If the connecting member is located forward of the horizontal frame, then the overall headrest length is reduced, but the connecting member and speakers are subjected to greater deformation under front loads
Solution Approach 1:
The patent changes the spatial arrangement by positioning the connecting member in the rearward dimension relative to the horizontal frame rather than forward. This dimensional repositioning maintains a compact overall headrest length while placing the connecting member in a stable region less affected by frontward loads, preserving relative position stability
Data Source
AI summary
Provided is a headrest provided with speakers and configured to prevent deformation of the speakers and a connecting member.The headrest for a vehicle seat includes a headrest frame supported by a seat back, electrical components supported by the headrest frame, and a connecting member extending horizontally to connect the electrical components. The headrest frame includes headrest stays supported by the seat back and extending vertically, vertical frames attached to the headrest stays, and a horizontal frame extending horizontally to connect upper ends of the vertical frames. Upper parts of the vertical frames extend obliquely upward toward the front. The electrical components are provided at lateral positions outside of the vertical frames with lower parts thereof supported by lower parts of the vertical frames, and the connecting member is located rearward of the horizontal frame.