Child Seat Folding Mechanism with Backrest-Actuated Locking
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Solution Overview
Problem
Existing child strollers require additional steps to fold and unfold due to detachable seats that are not coupled to the stroller frame, complicating the process and increasing operational complexity.
Innovation Solution
A child seat design featuring a seat portion fixedly connected with a coupling part, a backrest frame pivotally connected to the seat portion, and a locking mechanism that allows for rotational locking and unlocking, enabling convenient folding and unfolding by rotating the backrest frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the seat portion is made detachable from the stroller frame, then the adaptability and versatility of the child seat system is improved, but the device complexity and number of operating steps increase
Solution Approach 1:
The patent combines the detachable seat mechanism with the folding operation by integrating a coupling part on the stroller frame that interfaces with the seat portion. This coupling part includes a locking mechanism that is actuated during the folding operation, thereby merging the detachment function with the folding sequence and eliminating separate detachment steps.
Solution Approach 2:
The locking mechanism is designed to be automatically actuated during the folding operation. When the caregiver performs the folding motion, the coupling part and locking mechanism work together to automatically detach the seat portion from the stroller frame, eliminating the need for separate manual detachment actions.
2Reliability
If additional locking mechanisms are added to secure the detachable seat, then the reliability of seat attachment is improved, but the ease of operation during folding is worsened
Solution Approach 1:
The locking mechanism is pre-configured in the coupling part such that the locking and unlocking actions are automatically performed as part of the folding motion sequence. The mechanism is designed so that the folding operation itself triggers the locking/unlocking sequence in advance, eliminating the need for separate locking/unlocking steps.
Solution Approach 2:
The locking mechanism is designed to be self-actuating during the folding operation. The mechanical interaction between the coupling part and the seat portion during folding automatically engages or disengages the locking mechanism, maintaining security during normal use while enabling automatic release during folding without additional user actions.
Data Source
AI summary
A child seat includes a seat portion fixedly connected with a first coupling part, a backrest frame fixedly connected with a second coupling part, the second coupling part being pivotally connected with the first coupling part so that the backrest frame is rotatable relative to the seat portion, a rotary element pivotally connected with the first coupling part, the rotary element being rotatable relative to the seat portion and the backrest frame, and a locking mechanism operatively connected with the backrest frame and operable to rotationally lock and unlock the rotary element with respect to the seat portion. The locking mechanism is configured to switch between a locking state and an unlocking state in response to a rotation of the backrest frame relative to the seat portion and the rotary element.