Multi-Hardness Cushion with Detachable Ventilation Structure
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Solution Overview
Problem
Existing multi-hardness vehicle cushions face issues with high defective rates due to integrated production of soft and hard layers, leading to increased replacement costs and reduced passenger comfort due to inadequate ventilation, which compromises both durability and seating comfort.
Innovation Solution
A multi-hardness cushion design featuring detachable support and friction cushions with a ventilation structure, including air flow channels and holes, and a shock-absorbing cushion with an air layer, allowing for even air circulation and perspiration removal, utilizing magnetic attachments for easy assembly and disassembly, and an elastic air pipe to maintain airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the soft layer and hard layer are manufactured using the same mold as an integrated multi-hardness cushion, then the cushion provides both comfort and durability, but the defective proportion increases and productivity decreases
Solution Approach 1:
The cushion is divided into separate soft layer and hard layer components that are manufactured independently and then assembled together. This segmentation allows each layer to be produced separately with optimized processes, reducing defects and improving productivity while maintaining the multi-hardness functionality of the complete cushion assembly.
2Ease of operation
If a ventilation mat is added to provide ventilation, then passenger comfort improves, but the thickness of the seat cushion decreases
Solution Approach 1:
The ventilation mat is integrated within the existing cushion structure by nesting it between the soft layer and hard layer, or incorporating it into one of the layers. This nested arrangement provides ventilation functionality without adding external thickness, maintaining passenger comfort while preserving the overall cushion thickness.
3Reliability
If a blower unit is individually provided on seat cushion side and seat back side, then ventilation effectiveness improves, but cost and weight increase
Solution Approach 1:
Multiple blower units are merged into a single centralized blower unit that serves both the seat cushion and seat back ventilation needs. This unified approach reduces the total weight and cost of ventilation components while maintaining effective ventilation across all seating surfaces through strategically positioned air outlets.
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
This design significantly reduces defective rates, minimizes replacement costs, enhances passenger comfort by ensuring even ventilation and shock absorption, and maintains durability through modular components, improving overall seating experience.
Implementation Method 1
a magnetic member having magnetic properties is provided on an outer circumferential surface of a lower portion of the friction cushion, and a contact member of a metal material is provided on an outer circumferential surface of the support cushion to be in contact with the magnetic member
Implementation Method 2
a second ventilation unit having a second air flow channel that is formed in the friction cushion to face the first air flow channel, a plurality of second air flow holes that are formed along the second air flow channel to penetrate the friction cushion
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Disclosed herein is a multi-hardness cushion having a ventilation structure. This includes a support cushion having an insert recess, and stepped portions formed on both sides of the insert recess; a friction cushion detachably provided in the insert recess and having locking parts locked to the stepped portions; a first ventilation unit having a first air flow channel provided in the insert recess, a plurality of first side flow channels provided in the stepped portions, and an air inlet opening provided in the first air flow channel; and a second ventilation unit having a second air flow channel formed in the friction cushion to face the first air flow channel, a plurality of second air flow holes formed along the second air flow channel to penetrate the friction cushion, and a plurality of second side flow holes formed in the locking parts.