Vehicle Seat Cushion Rail System for Child Car Seat Installation
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Solution Overview
Problem
Conventional child car seats are heavy and difficult to install in vehicle rear seats, requiring awkward positioning that inconveniences both parents and children due to limited space.
Innovation Solution
A vehicle seat assembly with a movable cushion portion and rail system that allows the child car seat to be easily slid between seating locations, using a platform and slide rails with a lock device for secure mounting and repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional child car seat is installed in the rear seat of a vehicle, then the child is secured for travel, but the installation is difficult and requires awkward positioning that inconveniences both parent and child
Solution Approach 1:
The seat base is divided into a first outboard cushion portion and a center cushion portion that can be independently moved. This segmentation allows the parent to create access space by moving only the necessary cushion portion, rather than moving the entire seat, thereby simplifying the installation process while maintaining ease of operation
Solution Approach 2:
The cushion portions are made movable between a seating condition and a non-seating condition. This dynamic capability allows the seat to adapt during installation - cushions can be moved forward to expose the rail system for easy child seat attachment, then returned to their seating position afterward, resolving the contradiction between ease of installation and operational complexity
2Ease of operation
If the cushion portion is moved forward to access the rail system, then the child car seat can be easily mounted, but the seating surface is disrupted
Solution Approach 1:
The cushion portion's ability to move between seating and non-seating conditions allows it to temporarily disrupt the seating surface during installation, then restore it afterward. This dynamic behavior resolves the contradiction by allowing easy mounting when needed while maintaining seating surface integrity during normal use
Solution Approach 2:
By segmenting the cushion into movable portions, only the specific area needed for access is disturbed, while the rest of the seating surface remains stable. This localized disruption minimizes the impact on overall seating integrity while still providing access for easy child seat mounting
Data Source
AI summary
A vehicle seat assembly includes a seat base connected to a seat back. The seat base has a cushion portion and a support portion for supporting the cushion portion. The cushion portion is movable between a seating condition where the cushion portion forms a seating surface and non-seating condition where the cushion portion is tilted forward relative to the seat back about a forward end portion of the support portion. A rail system is mounted to the support portion. In the seating condition the rail system is covered by the cushion portion, and in the non-seating condition the rail system is configured to have mounted thereto an associated child car seat. The rail system is configured to move the associated child seat along a lateral direction of the vehicle seat assembly between a first outboard seating location and a center seating location defined by the seat base.