Massage device for seat
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Solution Overview
Problem
Conventional massage devices for seats experience force attenuation during airbag expansion, which reduces the effectiveness of the massage on the seat occupant.
Innovation Solution
A massage device for a seat that includes pressing portions and adjustment portions, supported by pivotable supports, with a controller that manages air supply and pressure detection to maintain consistent force application by adjusting the position and pressure of the pressing portions based on detected deformation and pressure gradients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If airbags are expanded to massage the seat occupant, then the massage effect is improved, but the chair body is pressed and deformed which attenuates the force of the airbags
Solution Approach 1:
The patent introduces adjustable supports that can dynamically change their support force based on the deformation of the chair body. When the chair body deforms during airbag expansion, the supports detect this deformation and adjust their support force accordingly, allowing the system to adapt to changing conditions rather than remaining static
Solution Approach 2:
The patent implements a feedback mechanism where the state of the chair body deformation is detected and used to adjust the support force. The supports continuously monitor the chair body's shape changes and modify their support force in response, creating a closed-loop control system that maintains optimal massage force despite chair body deformation
2Productivity
If airbags are expanded with high force to improve massage effect, then the massage effectiveness is improved, but the chair body deformation increases which reduces the actual force transmitted to the occupant
Solution Approach 1:
The supports detect chair body deformation and use this feedback information to adjust their support force, ensuring that the intended pressing force is consistently transmitted to the occupant despite variations in chair body rigidity or deformation
Solution Approach 2:
The system automatically adjusts the support force based on detected deformation without requiring external intervention. The supports self-regulate to compensate for chair body deformation, maintaining reliable force transmission throughout the massage process
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 solution effectively limits force attenuation, ensuring a consistent and proper massage by detecting seat deformation and adjusting the airbag positions, thereby maintaining effective pressure on the seat occupant.
Implementation Method 1
a compressor 40 (fluid supply source), which supplies the pressing portions 10 and the adjustment portions 30 with compressed air
Implementation Method 2
a pressure detector 60, which detects the inner pressure of the pressing portion 10 and the adjustment portion 30
Data Source
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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.