Child Car Seat with Rotatable Backrest and Articulated Support Leg
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Solution Overview
Problem
Existing rear-facing car seats for children are prone to tilting during frontal and rear impacts, especially when using ISOFIX attachment points, which can lead to unsafe installation and increased risk of injury due to non-standardized anchor points and complex assembly processes.
Innovation Solution
A rear-facing car seat design featuring a rotatable backrest that pivots freely relative to the seat, with adjustable inclination and a reinforcing leg that articulates between a storage and deployed position, allowing for secure attachment without additional anchoring straps, thereby controlling seat movement and reducing installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a reinforcing leg is added to prevent tilting, then stability during impact is improved, but device complexity increases and installation becomes more difficult
Solution Approach 1:
The car seat is divided into separable components: a seat base and a backrest that can be independently assembled. The reinforcing leg is integrated into the seat base as a distinct modular element, allowing it to be installed separately from the backrest. This segmentation enables the stabilizing function to be achieved without requiring complex integrated structures.
Solution Approach 2:
The reinforcing leg is extracted as a separate functional element that can be independently positioned and secured. Rather than being an integrated part of the backrest assembly, it is taken out as a discrete component that attaches to the seat base, simplifying both the manufacturing and installation processes while maintaining its stabilizing function.
2Stability of the object's composition
If additional anchoring straps are added to prevent tilting, then stability during impact is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The need for separate anchoring straps is eliminated by extracting the stabilizing function and integrating it directly into the seat base through the reinforcing leg. This removes the additional component that would require separate attachment to vehicle anchor points, simplifying the installation process.
Solution Approach 2:
The stabilizing function previously requiring separate anchoring straps is merged with the seat base structure itself through the reinforcing leg. The reinforcing leg becomes an integral part of the seat base that provides stabilization without requiring additional external attachment mechanisms.
3Adaptability or versatility
If non-standardized anchor points are used, then adaptability to different vehicles is improved, but installation safety and reliability deteriorate
Solution Approach 1:
The dependency on external vehicle anchor points is extracted and eliminated. The stabilizing function is achieved through the reinforcing leg integrated into the seat base, which does not require attachment to vehicle-specific anchor points. This removes the reliability issues associated with non-standardized vehicle anchor points while maintaining universal vehicle compatibility.
Solution Approach 2:
The seat base with integrated reinforcing leg becomes self-sufficient for stabilization, without requiring external vehicle anchor points. The reinforcing leg provides inherent stability through its integration with the seat base structure, making the system self-contained and eliminating reliance on variable external attachment points.
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
A child car seat (1), intended for mounting on the seat of a motor vehicle, comprising a seat (2), a backrest (3), and a support leg (5) connected at its upper end to said backrest (3), said support leg (5) being mounted articulated relative to said backrest (3) between a folded storage position and an extended use position in which its lower end rests on the floor of said vehicle. The backrest (3) is mounted to rotate freely relative to the seat (2), the rotational movement of said backrest (3) relative to said seat (2) being unrestricted when the backrest moves towards the seat.