Foldable Child Carrier Linkage Locking for Compact Storage
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Solution Overview
Problem
Existing child carrying devices, such as strollers and child dining chairs, face challenges in efficiently reducing their occupied volume for easy storage and transport, particularly when the foldable carrier and carrier frame are not adequately integrated for compact folding.
Innovation Solution
A foldable carrier with a seat assembly, armrest assembly, backrest assembly, and linkage assembly, featuring a locking mechanism that allows the backrest assembly to pivot relative to the armrest assembly and a folding locking mechanism between seat tubes and a front cross rod, enabling smooth transitions between unfolded and folded states, and a holder that adjusts its effectiveness based on the carrier frame's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the foldable carrier and carrier frame are made detachable for easy storage, then the occupied volume is reduced, but the complexity of the locking and unlocking mechanism increases
Solution Approach 1:
The locking member is integrated into the linkage assembly, combining the locking function with the existing linkage structure. This eliminates the need for separate locking components and reduces overall mechanism complexity while still enabling secure attachment and detachment of the carrier from the frame.
Solution Approach 2:
The linkage assembly serves as an intermediary element that connects the backrest assembly to the locking mechanism. When the backrest assembly moves, it drives the linkage assembly which in turn actuates the locking member, providing a smooth transition between locked and unlocked states without requiring direct manual operation.
2Adaptability or versatility
If the backrest assembly is made pivotable relative to the armrest assembly for angle adjustment, then the adaptability is improved, but the stability of the carrier structure deteriorates
Solution Approach 1:
The backrest assembly is designed with a pivot connection to the armrest assembly, allowing dynamic adjustment of the backrest angle. This enables the carrier to adapt to different usage scenarios and user preferences while maintaining structural integrity through the controlled pivot mechanism.
Solution Approach 2:
The locking member is positioned to engage with the locking portion at specific pivot positions of the backrest assembly. As the backrest pivots, the linkage assembly preliminarily positions the locking member to engage with the locking portion at predetermined angles, ensuring stable locking at adjusted positions.
3Ease of operation
If the locking member is driven by the backrest assembly folding motion, then the ease of operation is improved, but the reliability of the locking mechanism deteriorates
Solution Approach 1:
The locking mechanism is designed to be self-actuating through the folding motion of the backrest assembly. The linkage assembly converts the folding motion directly into the locking action, eliminating the need for separate manual locking operations. This self-service approach improves ease of operation while maintaining reliability through the direct mechanical connection.
Solution Approach 2:
The linkage assembly provides mechanical feedback that ensures the locking member engages properly with the locking portion as the backrest assembly folds. The connected motion path ensures that the locking action is reliably triggered at the appropriate moment in the folding sequence, maintaining both ease of operation and locking reliability.
Data Source
AI summary
The present application relates to a foldable carrier, a carrier frame of a child carrying device, and a child carrying device. The foldable carrier includes a seat assembly, an armrest assembly, a backrest assembly, a linkage assembly, and a locking member. The armrest assembly is pivotable relative to the seat assembly and movable between a folded position and an unfolded position, and the armrest assembly is provided with a locking portion. The backrest assembly has a folded position and an unfolded position. The linkage assembly is movably connected to the backrest assembly. One end of the locking member is pivotally connected to the linkage assembly, the other end of the locking member is capable of being fitted with the locking portion, and the backrest assembly is folded in a direction approaching the armrest assembly to drive, through the linkage assembly, the locking member to be separated from the locking portion.