Seat Back Pressure-Receiving Member for Direct Vibration Transfer
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Solution Overview
Problem
Conventional vehicle seats with embedded vibrators suffer from reduced vibration transmission efficiency due to absorption by spring members, increased part count, and potential interference with peripheral components, leading to discomfort and noise issues.
Innovation Solution
A vehicle seat design featuring a pressure-receiving member in the seat back frame, elastically supported by a cover material, with the vibrating unit attached directly to the pressure-receiving member, allowing efficient vibration transmission and reducing the number of parts by eliminating the need for spring members, while using a cover material and interference suppressing members to minimize interference and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring members are used to retain the vibrator in the frame member, then the vibrator is securely retained, but the vibration is absorbed by the spring members before transmission to the occupant
Solution Approach 1:
The patent removes the spring members from the system entirely. The vibrator is directly retained by the frame member through rigid attachment structures, eliminating the energy-absorbing elastic elements while maintaining secure retention of the vibrator during operation.
Solution Approach 2:
The vibrator is directly integrated with the frame member through rigid connection structures. This merging eliminates the intermediate spring members and creates a direct transmission path from the vibrator to the frame member and subsequently to the occupant, improving vibration transmission efficiency.
2Reliability
If dedicated spring members are used for attaching the vibrator to the frame member, then the vibrator is securely attached, but the number of parts increases
Solution Approach 1:
The vibrator attachment structure is merged with the frame member itself. The frame member is designed to directly retain the vibrator through integrated rigid connection structures, eliminating the need for separate spring members and reducing the overall part count.
Solution Approach 2:
The frame member serves multiple functions: it provides structural support for the seat back and simultaneously acts as the retention structure for the vibrator. This multi-functionality eliminates the need for dedicated spring members, reducing part count while maintaining attachment reliability.
3Ease of manufacture
If the vibrating unit is retained via spring members, then it can be easily installed, but it may interfere with peripheral members causing abnormal noise or discomfort
Solution Approach 1:
The spring members that caused interference with peripheral members are completely removed from the system. The vibrator is directly attached to the frame member using rigid connection structures that provide stable positioning without the interference issues associated with elastic spring members.
Solution Approach 2:
The patent replaces the complex spring member retention system with simpler rigid attachment structures that are easier to manufacture and install. These direct connection structures provide stable vibrator positioning without the interference problems that plagued the spring member system.
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 ensures efficient vibration transmission to the occupant, reduces part count, minimizes interference, and enhances the stability and comfort of the vibrating unit, improving overall performance and reducing noise.
Implementation Method 1
an elastically supporting member elastically supporting the pressure-receiving member in the seat back frame
Implementation Method 2
a vibrating unit is attached to the pressure-receiving member... vibration generated from the vibrating unit is entirely and directly transmitted to the pressure-receiving member
Data Source
AI summary
A vehicle seat includes a seat cushion S1 and a seat back S2. The seat back S2 includes a seat back frame F2 constituting a framework thereof, a pressure-receiving member 30 located in the seat back frame F2 and designed to support an upper body of an occupant, elastically supporting members 26, 27 elastically supporting the pressure-receiving member 30 in the seat back frame F2, and a cover material covering the seat back frame F2 and the pressure-receiving member 30. The seat back is configured such that when a backward movement load is applied from the upper body of the occupant seated on the seat cushion S1 to the seat back S2, the pressure-receiving member 30 moves backward to allow the upper body of the occupant to sink into the seat back S2. A vibrating unit 50 is attached to the pressure-receiving member 30.