Bladder-Actuated Seat Cushion for Dynamic Hardness Adjustment
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Solution Overview
Problem
Traditional vehicle seats lack dynamic adjustability to accommodate varying road conditions, providing only static comfort settings that do not adapt to real-time changes in vehicle operation or road quality.
Innovation Solution
An adjustable seat system featuring a bladder-based cushion with a porous foam support structure, actuated by an inflatable and deflatable bladder system that adjusts hardness based on real-time data from the vehicle's suspension system, including road conditions and driving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional static seat adjustment mechanisms are used, then the seat provides consistent support, but it cannot adapt to varying road conditions and driving modes
Solution Approach 1:
The patent applies the dynamics principle by transforming the static seat cushion into a dynamic system that can change its hardness in real-time. The cushion incorporates an inflatable bladder that can be selectively inflated or deflated to adjust the support characteristics of the cushion, enabling it to adapt to varying road conditions and driving modes rather than remaining fixed in a single state
Solution Approach 2:
The patent implements parameter changes by modifying the physical state of the cushion through bladder inflation and deflation. This changes the hardness parameter of the seat cushion dynamically, allowing the system to adjust its mechanical properties (from soft to firm) based on detected driving conditions, thereby resolving the contradiction between adaptability and complexity
2Strength
If the seat hardness is increased to provide better support during cornering, then occupant support improves, but comfort deteriorates on rough roads
Solution Approach 1:
The system uses dynamic adjustment of cushion hardness through the inflatable bladder, allowing the seat to transition between soft and firm states based on real-time driving conditions. During cornering, the bladder inflates to increase support; on rough roads, it deflates to reduce vibrational discomfort, thus resolving the contradiction between support capability and comfort
Solution Approach 2:
The system employs feedback from the vehicle's suspension system to automatically adjust cushion hardness. The suspension system detects road conditions and driving dynamics, and this information feeds back to control the bladder inflation/deflation, enabling the seat to automatically provide appropriate support levels without manual intervention and resolving the support-comfort trade-off
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
Enhances occupant comfort by dynamically adjusting seat hardness to absorb vibrational loads and provide support during different driving conditions, such as potholes and cornering, thereby improving the overall driving experience.
Implementation Method 1
an actuator in communication with the bladder, wherein the actuator is configured to selectively adjust the hardness of the cushion by inflating and deflating the bladder
Data Source
AI summary
An adjustable seat system for use with a vehicle, with the system including a cushion associated with a passenger seat of the vehicle. The cushion includes a support structure and a bladder encapsulating the support structure, wherein the support structure is formed from a porous foam material. The system also includes an actuator in communication with the bladder, wherein the actuator is configured to selectively adjust the hardness of the cushion by inflating and deflating the bladder.