PMMA Stroller Divider with Releasable Clamps for Contact Prevention
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Solution Overview
Problem
Current strollers lack a mechanism to prevent physical contact between children seated next to each other, which can lead to annoyance or injury, posing a challenge for caregivers to ensure the safety of the children during transport.
Innovation Solution
A divider structure made of PMMA material, affixed to a vertical bar using releasable clamps, is designed to prevent contact between children by shaping the PMMA sheet to inhibit upper and lower body contact between adjacent seats, allowing visibility and being removable for non-aggressive situations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vertical divider is installed between children to prevent contact, then safety is improved, but visibility between children and caregivers is reduced
Solution Approach 1:
The patent applies transparency (an optical property similar to color changes) by using a transparent PMMA material for the divider. This allows light to pass through the divider, maintaining visibility between children and caregivers while still providing the physical barrier needed for safety. The transparent material resolves the contradiction by allowing visual contact to penetrate the physical barrier.
2Reliability
If a full vertical divider spanning the entire seated body is installed, then contact prevention is improved, but device complexity and obstruction of caregiver view are worsened
Solution Approach 1:
The patent applies segmentation by dividing the protective barrier into two separate horizontal sections (upper body divider and lower body divider) rather than using one continuous vertical structure. This segmentation reduces the overall complexity of the device while maintaining contact prevention effectiveness, as the divided sections are easier to install, adjust, and remove than a full vertical divider.
Solution Approach 2:
The patent applies dynamics by making the divider sections removable and adjustable rather than fixed. The clamps allow the dividers to be easily attached and detached, enabling the structure to adapt between different usage scenarios (when contact prevention is needed versus when it is not), reducing permanent structural complexity while maintaining protection when required.
3Adaptability or versatility
If a removable divider structure is used for non-aggressive situations, then adaptability is improved, but reliability in preventing contact may be worsened
Solution Approach 1:
The patent applies dynamics by designing the divider with removable clamp mechanisms that provide secure attachment when installed. The clamps create a dynamic system that transitions between two reliable states: fully assembled for contact prevention and easily removed for non-aggressive situations. This dynamic design ensures reliability is maintained in both configured states while providing adaptability.
Data Source
AI summary
An occupant divider structure for a child's stroller utilizes a Poly(methyl methacrylate) (PMMA) sheet affixed by two releasable clamps to a bar extending vertically from a slotted insert receptacle that extends upwardly from the seat back center between two “side-by-side occupant seats in a molded stroller frame. The shape of the PMMA sheet is designed so as to prevent contact by and between infants/toddlers occupying adjacent seats. The clamping mechanisms are designed to allow easy release from the mounting bar for removal thereof from the stroller.