Removable Child Seatback Latch for Convertible Booster Seats
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Solution Overview
Problem
Existing convertible child safety seats lack a cost-effective and easy-to-assemble mechanism for adapting to different ages of a child, often requiring multiple purchases and being wasteful, confusing, and expensive.
Innovation Solution
A child safety seat assembly featuring a removable seatback with elongated beams and a latch system that allows easy assembly and disassembly, enabling the seat to convert from a standard seat to a booster seat by engaging and disengaging the latch through an elongated slot, facilitating adjustments as the child grows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a child safety seat is designed to be convertible with a removable seatback, then the adaptability to different ages is improved, but the device complexity increases
Solution Approach 1:
The child safety seat is divided into separable components: a base seat portion and a removable seatback. The seatback can be completely detached from the base, allowing the seat to convert from a full seat configuration to a booster seat configuration. This segmentation enables adaptability to different age groups while keeping each component relatively simple in design.
Solution Approach 2:
The seatback is extracted as a removable component from the overall seat structure. By taking out the seatback, the system gains versatility to accommodate both younger children (with seatback) and older children (without seatback, as booster). The extraction is achieved through a latch mechanism that simplifies the removal process despite the added functionality.
2Reliability
If a complex latch mechanism is used to secure the seatback, then the reliability of attachment is improved, but the ease of operation deteriorates
Solution Approach 1:
The latch mechanism is designed to be self-latching and self-locking. When the seatback is inserted into the base, the latch automatically engages and secures itself without requiring manual manipulation or additional fastening steps. This self-service mechanism ensures reliable attachment while maintaining ease of operation, as parents simply need to insert and remove the seatback without dealing with complex manual latching procedures.
Solution Approach 2:
The patent replaces traditional complex mechanical fastening systems (such as multiple bolts, screws, or manual latches) with a simplified latch mechanism that uses elastic deformation and geometric interlocking. The latch leverages the natural elasticity of materials and the geometry of the engagement surfaces to achieve secure attachment, eliminating the need for complex mechanical systems while maintaining both reliability and ease of use.
3Adaptability or versatility
If multiple child safety seats are purchased for different ages, then the adaptability to different ages is improved, but the loss of substance increases
Solution Approach 1:
The child safety seat is designed as a universal system that can serve multiple functions and accommodate different age groups. The base seat portion remains permanent and reusable, while the seatback can be removed or retained based on the child's age and size. This multi-functionality allows a single seat to replace what would traditionally require multiple different seats, thereby preventing waste of materials and reducing the need for multiple purchases.
Solution Approach 2:
The design enables selective discarding and recovering of the seatback component. As the child grows, the seatback can be removed (discarded from active use) while the base seat portion is retained and recovered for continued use as a booster seat. This approach prevents the complete disposal of the entire seat system and allows families to recover and reuse the base portion, reducing waste.
Data Source
AI summary
A convertible child safety seat assembly includes a seat portion and a removable seatback. The seat portion has a seat portion having an upper surface, and an elongated slot opened on the upper surface. The seatback is affixed with at least one beam that has an elongated shape. The beam has a distal end, and is assembled with a latch movable transversally relative to the beam. The seatback is attached to the seat portion with the beam received in the elongated slot, the distal end engaged under the upper surface, and the latch engaging through a sidewall of the elongated slot.