Child Seat Base Energy-Management Pad for Impact Force Absorption
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Solution Overview
Problem
Existing child car seats do not effectively manage forces during impact events, which can lead to increased risk of injury to children.
Innovation Solution
A child restraint system featuring a seat base with an energy-management pad that absorbs and redistributes forces from the vehicle seat during impact, utilizing a blow-molded outer shell with reinforcement ribs to change shape and dissipate energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid seat base is used to provide structural support, then strength and stability are improved, but force absorption during impact is reduced
Solution Approach 1:
The patent incorporates an energy-management pad positioned between the seat-base foundation and the vehicle seat to absorb forces during impact events. This cushioning element is pre-installed to mitigate harmful forces before they reach the child restraint, resolving the contradiction by providing both structural support and impact protection.
Solution Approach 2:
The energy-management pad is constructed as a composite structure with an outer shell and energy-absorbing material. This composite design combines the structural integrity needed for support with the energy-absorbing properties required to mitigate impact forces, simultaneously achieving both strength and harm reduction.
2Reliability
If force absorption is increased during impact, then safety is improved, but structural rigidity is reduced
Solution Approach 1:
The seat base is segmented into distinct functional components: a seat-base foundation for structural support and an energy-management pad for force absorption. This segmentation allows each component to optimize its specific function without compromising the other, achieving both safety and rigidity.
Solution Approach 2:
The energy-management pad acts as an intermediary element between the rigid seat-base foundation and the vehicle seat. It mediates the interaction by absorbing impact forces while allowing the foundation to maintain its structural rigidity, thus improving safety without sacrificing strength.
3Ease of manufacture
If the seat base structure is simplified, then manufacturing ease is improved, but energy management capability is reduced
Solution Approach 1:
The energy-management pad utilizes a blow-molded outer shell that provides structural definition while accommodating the energy-absorbing material. This shell structure is relatively simple to manufacture yet effectively contains and manages the energy-absorbing properties, balancing manufacturing ease with energy management capability.
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 energy-management pad effectively reduces the forces acting on the child restraint during impact, thereby enhancing safety and compliance with safety standards by distributing and dissipating the forces over a longer period.
Implementation Method 1
The energy-management pad is configured to change from an un-deformed state to a deformed state in response to forces acting on the energy-management pad from the seat bottom of the vehicle seat
Implementation Method 2
The energy-management pad is positioned between at least a portion of the seat-base foundation and the seat bottom of the vehicle seat to absorb forces acting on the child restraint from the vehicle seat
Data Source
AI summary
A child restraint includes a seat base and a juvenile seat. The seat base is adapted to rest on a vehicle seat. The juvenile seat is coupled to the seat base. The seat base includes a seat-base foundation that supports the juvenile seat, and an energy-management pad coupled to the seat-base foundation.