Vehicle Headrest Mass Mounting for Seat Vibration Attenuation
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Solution Overview
Problem
Existing vehicle seat headrest structures are complex due to multiple brackets and springs, making it difficult to mount a mass body on the frame simply.
Innovation Solution
A vehicle seat design featuring a headrest with a frame supported to vibrate relative to the seat back, utilizing a pair of covers to hold a mass body between them, simplifying the mounting structure and allowing the headrest to vibrate with the seat back, thereby attenuating vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plurality of brackets and springs are used to mount the mass body on the frame, then the mass body can be securely mounted and vibration attenuation function is achieved, but the structure becomes complicated
Solution Approach 1:
The patent combines multiple brackets and springs into a single integrated frame structure. The frame directly incorporates the mounting function for the mass body through its structural design, eliminating the need for separate brackets and springs, thus simplifying the overall structure while maintaining the vibration attenuation function
Solution Approach 2:
The frame is designed to serve multiple functions simultaneously: it provides structural support for the headrest, enables vibration attenuation through its vibratable connection to the seat back, and directly mounts the mass body through its integrated structure. This multi-functionality eliminates the need for separate dedicated components for each function
2Strength
If multiple brackets are mounted on the frame, then the mass body can be connected securely, but the mounting structure becomes complex and difficult to assemble
Solution Approach 1:
The frame integrates the mass body mounting function directly into its structure, combining what would otherwise require separate brackets and connection mechanisms. This integration maintains secure mounting while significantly simplifying the assembly process
Solution Approach 2:
Instead of mounting separate brackets onto the frame and then attaching the mass body to those brackets, the patent inverts the approach by designing the frame itself to directly support and mount the mass body, reversing the traditional assembly sequence and simplifying the overall structure
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 simplified structure enables effective vibration attenuation of the vehicle seat by allowing the headrest to vibrate with respect to the seat back, reducing noise and enhancing the mounting efficiency of the mass body.
Implementation Method 1
when the seat vibrates, the mass body vibrates with respect to the frame, such that the vibration of the seat may be decayed
Implementation Method 2
the vibration of the seat may be decayed
Data Source
AI summary
A vehicle seat including: a seat back; and a headrest that is provided to an upper part of the seat back, the headrest including, a frame that is supported to be vibratable with respect to the seat back, a headrest body that is mounted on the frame, a first cover and a second cover that nip and hold the frame in cooperation with each other in the headrest body, and a mass body that is held between the first cover and the second cover.