Removable Double Child Seat with Modular Harness System
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Solution Overview
Problem
Existing child carrying devices like strollers and wagons typically have fixed seats designed for one child, lacking sufficient restraints to safely accommodate multiple children side by side.
Innovation Solution
A removable child seat cover with two child restraint harnesses that can be attached over a single fixed seat, converting it into a double child seat with a releasable connection system for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single child seat is used in a stroller or wagon, then the device can be simpler and lighter, but it cannot safely accommodate multiple children side by side
Solution Approach 1:
The child seat is divided into modular components: a base seat structure and separate removable seat inserts. Each insert contains its own integrated harness system, allowing the seat to be segmented into multiple independent child restraint units that can be attached side by side to the stroller or wagon frame.
Solution Approach 2:
The base seat structure is designed with universal attachment points that can accommodate different types of seat inserts. The same base structure serves multiple functions: it provides the structural framework, attachment mechanisms, and can hold either one large seat insert or multiple smaller insert seats, making the system adaptable to various carrying configurations.
2Reliability
If a double child seat is designed from the beginning, then multiple children can be transported safely, but the device becomes more complex and harder to store
Solution Approach 1:
The double child seat configuration is achieved by segmenting the system into a reusable base structure and separate seat inserts. This allows the safety features (harnesses, attachment points) to be distributed across modular units that can be independently manufactured, tested, and assembled, reducing overall structural complexity while maintaining reliability.
Solution Approach 2:
The seat system is designed to be dynamically reconfigurable. The seat inserts can be removed and attached as needed, allowing the parent to convert between single-child and double-child configurations. This dynamic adaptability means the complex double-seat structure only exists when needed, simplifying storage and transport when not in use.
3Adaptability or versatility
If a removable seat cover is used to convert a single seat to double seat, then the base seat can be reused, but the connection system must be secure and reliable
Solution Approach 1:
The connection system merges multiple attachment mechanisms into an integrated assembly. The seat inserts include built-in attachment points that engage with complementary receptacles on the base structure, combining mechanical interlocking, friction fit, and possibly latching mechanisms into a single reliable connection system that ensures secure attachment while maintaining ease of installation and removal.
Data Source
AI summary
Strollers, wagons and other child carrying devices will typically comprise one or more child seats for transporting a child or children. Each child seat may comprise a child restraint harness system to retain the child safely in the child seat for transporting. Most child seat may accommodate only one child but may have sufficient space to accommodate two children but are not equipped with enough seat belts or other proper restraints. A removable double child seat may be removably attached to the single child seat to convert the single child seat into a double child seat with an appropriate harness system to retain both children safely.