Convertible Child Seat Double Lock for Accidental Release Prevention
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Solution Overview
Problem
Existing convertible child seats pose a safety risk due to accidental release of the swing frame from the main support frame, which can occur when the retractable rods are operated unintentionally, potentially leading to the child being unsecured.
Innovation Solution
A child seat design featuring a double lock mechanism that includes a latch system with a protrusion and pusher mechanism, allowing the seat frame to be securely locked in both high chair and swing configurations, ensuring the swing frame remains fixed to the main support frame until intentional conversion is initiated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a retractable rod mechanism is used to allow conversion between high chair and swing configurations, then the adaptability of the child seat is improved, but the reliability deteriorates due to accidental release of the swing frame
Solution Approach 1:
The latch is pre-positioned in a blocked state by the protrusion before conversion is needed. This preliminary blocking action prevents accidental release while still allowing intentional conversion when the user deliberately moves the latch to overcome the protrusion block and activate the release mechanism.
Solution Approach 2:
The protrusion acts as an intermediary element between the latch and the cross rod. It provides a mechanical barrier that mediates between the locked state (preventing accidental release) and the unlocked state (allowing intentional conversion), ensuring reliable operation.
2Ease of operation
If the latch is made movable in the cross rod to enable conversion, then the ease of operation is improved, but the reliability worsens due to risk of accidental movement
Solution Approach 1:
The protrusion preliminarily blocks the latch's movement path before conversion is needed. This pre-blocking action maintains reliability by preventing accidental movement, while still allowing easy intentional conversion when the user deliberately operates the latch to overcome the protrusion barrier.
Solution Approach 2:
The latch is designed to be dynamically movable within the cross rod, transitioning between blocked and unblocked states. This dynamic capability enables easy operation for intentional conversion while the protrusion provides a static blocking barrier that prevents accidental movement, resolving the contradiction between ease of operation and reliability.
Data Source
AI summary
A child seat includes a main support frame, a swing frame connected pivotally to the main support frame, a seat frame connected to the swing frame and convertible between a high chair configuration and a swing configuration, a first locking mechanism including a latch disposed movably between the swing frame and the main support frame and engaged releasably with the main support frame, and a second locking mechanism including a protrusion provided on the swing frame and movable between a first position, where movement of the latch is prevented, and a second position, where movement of the latch is permitted so that the latch can move away from the main support frame, thereby converting the seat frame to the swing configuration.