Pushchair Seat Adaptor Assembly for Stable Two-Child Mounting
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Solution Overview
Problem
Existing pushchairs often struggle to accommodate more than one child without compromising stability or ease of use.
Innovation Solution
A pushchair assembly that includes a second seat assembly and an adaptor, allowing a second seat to be mounted on the pushchair frame, with features like a subsidiary frame member, latches, and a second seat adaptor to secure and stabilize the additional seat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a second seat is added to the pushchair frame, then the capacity to carry multiple children is improved, but the stability of the pushchair deteriorates
Solution Approach 1:
The adaptor acts as an intermediary component between the pushchair frame and the second seat assembly. It includes a pushchair frame coupling that interfaces with the existing frame, a second seat coupling that connects to the second seat assembly, and structural elements like protrusions and recesses that mediate the connection and distribute loads, thereby maintaining stability while enabling multi-child capacity
Solution Approach 2:
The system is segmented into distinct functional components: the original pushchair frame, the adaptor, and the second seat assembly. The adaptor itself is segmented into multiple coupling mechanisms (pushchair frame coupling, second seat coupling, primary seat coupling) and stabilizing elements (protrusions, recesses, latches). This segmentation allows each component to perform its specific function while working together to maintain overall stability
2Adaptability or versatility
If a second seat assembly is mounted on the pushchair frame, then the versatility of the pushchair is improved, but the device complexity increases
Solution Approach 1:
The adaptor is designed as a universal interface that can accommodate different second seat assemblies while attaching to a specific pushchair frame. The pushchair frame coupling and second seat coupling are designed with standardized features (protrusions, recesses, latch mechanisms) that can work with various seat configurations, providing versatility without requiring multiple specialized components for each scenario
Solution Approach 2:
The adaptor serves as a universal intermediary that decouples the complexity of the second seat assembly from the pushchair frame. By providing a standardized interface layer, it allows different seat assemblies to be attached without modifying the original frame, thereby increasing versatility while containing complexity within the adaptor component itself
3Reliability
If latches and coupling mechanisms are added to secure the second seat, then the reliability of the mounting is improved, but the ease of operation deteriorates
Solution Approach 1:
The latch mechanism is designed to be self-actuating through lever action. When the latch lever is moved to the locked position, it automatically engages with the latch coupling portion and secures the connection. The mechanism uses mechanical advantage through the lever to ensure reliable engagement without requiring additional tools or complex procedures, and can be released by simply moving the lever back, providing ease of operation while ensuring security
Data Source
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AI summary
A pushchair assembly for mounting a second seat (220) on a pushchair frame (10) of a pushchair comprises: a second seat assembly (200), wherein the second seat assembly comprises: a subsidiary pushchair frame member (210) configured to couple to a frame member of the pushchair frame; and the second seat (220) for the pushchair mounted on the subsidiary pushchair frame member; and a second seat adaptor (700) having a first end and a second end, wherein the adaptor comprises a second seat coupling (710) at the first end, the second seat coupling configured to couple to the second seat assembly; a pushchair frame coupling (704) between the first and second ends for coupling to the pushchair frame; and a primary seat coupling (702) at the second end, wherein the primary seat coupling is for supporting a primary seat of the pushchair. An adaptor for mounting primary and second seats on a pushchair frame is also provided.