Adjustable Child Safety Seat Base for Rear-Facing Leg Room
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Solution Overview
Problem
Existing child safety seats face challenges in accommodating older children with larger body sizes in a rear-facing position due to limited leg space, which can lead to concerns about leg injury during collisions.
Innovation Solution
A child safety seat design featuring a support base with a sliding extension part that can be adjusted between retracted and deployed positions, allowing for increased leg room by extending the seat's footprint when needed, and a recline foot for adjusting the seat's inclination to prevent rotation and rebound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the child safety seat is installed in a rear facing position to provide better protection, then the child's head and torso are better protected, but there is not enough space for the child's legs
Solution Approach 1:
The support base incorporates a movable extension part that can be adjusted between retracted and extended positions. This dynamic structure allows the leg space to be modified based on the child's size and position, providing adequate room for larger children while maintaining a compact form when not needed.
Solution Approach 2:
The support base is divided into a main body and a separate extension part. This segmentation allows the extension part to be independently adjusted or removed, providing flexibility in configuring the available leg space without affecting the overall structural integrity of the child safety seat.
2Area of stationary object
If the child safety seat is designed for larger children, then more leg room is needed, but the seat may rebound onto the seatback during collision
Solution Approach 1:
The extension part is designed to be adjustable and can be positioned to provide leg room while maintaining proper rearward orientation. By allowing customization of the support base configuration, the design enables adequate leg space without compromising the seat's stability and resistance to rebound during collision.
3Area of stationary object
If the support base is made larger to accommodate larger children, then more leg space is provided, but the device complexity increases
Solution Approach 1:
Rather than creating a permanently larger and more complex support base, the invention uses a dynamic extension part that can be adjusted as needed. This approach provides the necessary leg space only when required, maintaining a simpler overall structure compared to a permanently enlarged base.
Data Source
AI summary
A child safety seat includes a child seat for receiving a child, and a support base for supporting the child seat, the child seat being detachably installable on the support base. The support base includes a shell body having an end and a bottom surface, and an extension part disposed adjacent to the end of the shell body and having a foremost end surface. The child safety seat is positionable on a vehicle seat with the foremost end surface in contact with a seatback of the vehicle seat, the extension part being movable relative to the shell body substantially parallel to the bottom surface between a first and a second position, the foremost end surface being adjacent to the end of the shell body in the first position and deployed away from the end of the shell body in the second position.