Vehicle Seat Back Structure With Direct-Mounted Vibrating Unit
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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 minimizing part count and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vibrator is retained in the frame member via spring members, then the upper body of the occupant is supported from behind, but the vibration from the vibrator is absorbed by the spring members before being transmitted to the frame member, decreasing vibration transmission efficiency
Solution Approach 1:
The patent removes the spring members from the vibration transmission path by directly attaching the vibrator to the frame member. This extraction of the elastic supporting member eliminates the absorption of vibration energy that occurred through the spring members, thereby improving vibration transmission efficiency to the occupant's upper body.
Solution Approach 2:
The patent merges the functions of the vibrator attachment and the structural support by directly coupling the vibrator to the frame member. This consolidation eliminates the intermediate spring members and reduces the number of parts while maintaining structural integrity and improving vibration transmission.
2Reliability
If dedicated spring members are used for attaching the vibrator to the frame member, then the vibrator is securely retained, but the number of parts increases
Solution Approach 1:
The patent combines the vibrator attachment function with the existing frame member structure, eliminating the need for separate spring members. This merging of functions reduces the total number of parts while maintaining secure retention of the vibrator through direct attachment to the frame member.
3Reliability
If the vibrating unit is retained via spring members, then it is securely mounted, but it may interfere with peripheral members causing abnormal noise or discomfort
Solution Approach 1:
The patent removes the spring members that caused interference with peripheral members and replaced them with a direct attachment method to the frame member. This extraction eliminates the source of abnormal noise and discomfort while maintaining secure mounting of the vibrating unit.
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, and minimizes interference, enhancing comfort and operational stability of the vibrating unit.
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.