Seat Cushion Bladder Assembly for Bond-Free Lumbar Support
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Solution Overview
Problem
Existing vehicle seat assemblies lack effective integration of inflatable bladders and tube assemblies for enhanced lumbar and lateral support, which limits their ability to provide dynamic and customizable support to seat occupants.
Innovation Solution
A seat assembly design that includes a seat cushion with indentations and slits for receiving inflatable bladders, which are fluidly connected to tube assemblies, allowing for the inflatable bladders to be inserted and positioned without gluing or bonding, and enabling inflation and deflation for massage functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inflatable bladders are integrated into the seat cushion using traditional bonding methods, then the bladders are securely fixed, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The seat cushion is segmented with recesses and slits that separately receive and secure different portions of the bladder assembly. The bladder is divided into inflation portion and tube assembly portion, with each received in its designated recess, simplifying the integration process while maintaining secure fixation.
Solution Approach 2:
The tube assembly is inserted through the slit into the recess, with the bladder nested within the recess and the tube assembly nested through the slit. This nested arrangement allows multiple components to be integrated through a single insertion action, reducing assembly complexity while ensuring reliable positioning.
2Ease of operation
If inflatable bladders are inserted through the slit from the second surface, then the tube assembly can be disposed proximate the slit for easy connection, but the bladder must be precisely positioned within the cushion
Solution Approach 1:
The slit acts as an intermediary pathway that guides the tube assembly into the recess. By inserting the tube assembly through the slit, the bladder is automatically positioned within the recess without requiring precise manual placement, as the slit geometry constrains and guides the components into their correct positions.
Solution Approach 2:
The recess and slit are strategically positioned and dimensioned to provide localized guidance and constraint. The slit extends from the second surface toward the first surface, creating a localized pathway that ensures the tube assembly and bladder are positioned correctly within the cushion structure without requiring overall precision throughout the entire assembly process.
3Adaptability or versatility
If multiple indentations and slits are provided in the seat cushion, then multiple bladders can be integrated for enhanced support, but the cushion structure becomes more complex
Solution Approach 1:
The seat cushion is designed with multiple identical recesses and slits that can receive different types of bladder assemblies (lumbar support, lateral support, massage functions). This universal design allows the same structural pattern to serve multiple functions, enabling customizable support configurations without proportionally increasing structural complexity.
Solution Approach 2:
The cushion is segmented into multiple zones with discrete recesses and slits for different bladder functions. Each recess-slit pair is an independent module that can be configured separately, allowing versatile bladder arrangements while maintaining a systematic and organized cushion structure that doesn't become overly complex despite having multiple integration points.
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 provides customizable support and massage functions by allowing inflatable bladders to be easily integrated and positioned within the seat cushion, enhancing occupant comfort and support without compromising the structural integrity of the seat cushion material.
Implementation Method 1
an inflatable bladder disposed within the seat cushion and fluidly connected to a tube assembly extending into the slit
Implementation Method 2
a tube assembly disposed proximate the second surface and extending into the slit, fluidly connected to the inflatable bladder
Data Source
AI summary
A seat assembly having an inflatable bladder and a method of assembly. The seat assembly may have a seat cushion that may have a slit. The inflatable bladder may be inserted through a slit from a second surface of the seat cushion toward a first surface and may be received in the indentation.