Convertible Highchair Sill Interlock for Correct Back Positioning
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Solution Overview
Problem
Existing highchair designs face difficulties in ensuring safe and correct mounting of components, particularly the sill, leading to unreliable connections and safety concerns.
Innovation Solution
A convertible chair with a base frame, height-adjustable seat body, and detachable sill equipped with safety mechanisms that prevent coupling when the movable back is in an incorrect position, ensuring secure attachment and adaptability for various uses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the sill is made detachable for versatility, then adaptability is improved, but connection reliability deteriorates
Solution Approach 1:
The patent introduces safety means as an intermediary mechanism between the sill and seat body. This intermediary component verifies the position of the movable back and only allows connection when proper positioning is achieved, thus maintaining both detachability for versatility and reliability through safety verification
Solution Approach 2:
The safety means prevent incorrect coupling attempts before they can compromise reliability. By blocking improper connections in advance, the system ensures that only correct configurations can be assembled, maintaining connection reliability while preserving the detachable nature of the sill
2Reliability
If safety means are added to prevent incorrect coupling, then reliability is improved, but device complexity increases
Solution Approach 1:
The safety means operate autonomously to verify the position of the movable back and control the coupling of the sill. The mechanism self-activates based on the position of components without requiring external monitoring or complex control systems, thereby improving safety while minimizing the increase in device complexity
3Reliability
If the movable back position verification is integrated into the coupling mechanism, then safety is improved, but ease of operation deteriorates
Solution Approach 1:
The safety means act as an intermediary that automatically verifies the movable back position during the coupling process. This intermediary mechanism handles the safety verification automatically, so users do not need to manually check positions, thereby maintaining ease of operation while improving safety
Data Source
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AI summary
A chair (1), convertible into a baby's highchair, comprising a base frame (2) to which it is possible to connect a seat body (10) with height adjustment means, the seat body comprising a fixed back (13) to which a movable and height-adjustable back (14) is connected, a sill (20) being further provided which can be detachably associated with the seat body (10) and being provided with safety means adapted to prevent coupling to the seat body (10) when the movable back (14) is in an incorrect position.