Seat Massage Device with Deformation-Compensating Position Control
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Solution Overview
Problem
Conventional massage devices for seats often experience force attenuation during airbag expansion, which reduces the effectiveness of the massage on the seat occupant.
Innovation Solution
A massage device with a pressing portion, an adjustment portion, a deformation detector, and a controller that adjusts the position of the pressing portion based on detected deformation to maintain optimal force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the pressing portion expands to press the seat occupant, then the massage function is provided, but the seat body is pressed and deformed which attenuates the pressing force
Solution Approach 1:
The pressing portion is made movable relative to the seat body through a support structure with adjustment portions. The controller dynamically adjusts the position of the pressing portion based on deformation detection, allowing the system to adapt to seat body deformation and maintain effective pressing force on the seat occupant.
Solution Approach 2:
A deformation detection device detects the deformation of the seat body caused by pressing portion expansion. The controller uses this feedback information to control the adjustment portion, moving the pressing portion to compensate for the deformation and maintain optimal pressing force.
2Force
If the pressing portion is fixed to the seat body, then the structure is simple, but the pressing force is attenuated due to seat deformation during expansion
Solution Approach 1:
The pressing portion is made movable relative to the seat body through a support structure with adjustment portions. The controller dynamically adjusts the position of the pressing portion based on deformation detection, allowing the system to adapt to seat body deformation and maintain effective pressing force on the seat occupant.
Solution Approach 2:
A deformation detection device detects the deformation of the seat body caused by pressing portion expansion. The controller uses this feedback information to control the adjustment portion, moving the pressing portion to compensate for the deformation and maintain optimal pressing force.
3Productivity
If the pressing portion expands fully to maximize massage effect, then the massage coverage is improved, but the seat deformation increases which reduces pressing effectiveness
Solution Approach 1:
The pressing portion is made movable relative to the seat body through a support structure with adjustment portions. The controller dynamically adjusts the position of the pressing portion based on deformation detection, allowing the system to adapt to seat body deformation and maintain effective pressing force on the seat occupant.
Solution Approach 2:
A deformation detection device detects the deformation of the seat body caused by pressing portion expansion. The controller uses this feedback information to control the adjustment portion, moving the pressing portion to compensate for the deformation and maintain optimal pressing force.
Data Source
AI summary
A massage device for a seat includes a pressing portion configured to expand to press a seat occupant seated on the seat, an adjustment portion configured to adjust a position of the pressing portion between the seat occupant and the seat, a deformation detector configured to detect deformation of the seat caused by expansion of the pressing portion, and a controller configured to control the adjustment portion based on a detection result of the deformation detector.