Child Seat Side Wing Mechanism to Prevent Jamming
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Solution Overview
Problem
Existing child safety seats with fixed side wings fail to provide optimal comfort and safety for children of different ages and sizes, and the inflexible side wings complicate storage, transportation, and testing due to their inability to be folded and opened at will.
Innovation Solution
A side wing adjustment mechanism that includes pins on the headrest and inclined grooves on the side wings, allowing for adjustable height and extension, along with a driving rod and return members to ensure smooth opening and folding, and springs for automatic retraction, enabling the side wings to be folded and opened effortlessly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If side wings are made fixed to ensure structural stability, then safety and structural integrity are improved, but adaptability to different child sizes and ease of storage are worsened
Solution Approach 1:
The side wings are designed to be dynamically adjustable rather than fixed. The adjustment mechanism includes a driving rod connected to adjustment handles, which can push or pull the side wings to change their extension state. This allows the side wings to adapt to different child sizes and storage requirements while maintaining structural stability when extended.
Solution Approach 2:
The side wing adjustment mechanism is segmented into multiple independent components: adjustment handles, driving rods, inclined grooves, and return members. This segmentation allows each component to perform its specific function independently, enabling smooth adjustment while maintaining overall structural integrity.
2Reliability
If side wings are made fixed to ensure safety, then protective function is improved, but ease of operation for folding and opening is worsened
Solution Approach 1:
The adjustment mechanism incorporates return members (springs) that automatically push the driving rods when the adjustment handles are released. This self-service feature allows the side wings to return to their original position automatically after being extended or retracted, significantly improving ease of operation while maintaining safety when properly positioned.
Solution Approach 2:
The driving rod acts as an intermediary between the adjustment handles and the side wings. It translates the rotational motion of the handles into linear motion that pushes or pulls the side wings, providing smooth and controlled adjustment while ensuring safety through the inclined groove constraint.
3Reliability
If side wings are extended to provide better protection, then safety and comfort are improved, but device complexity and space occupation increase
Solution Approach 1:
The side wings are designed with a flexible connection through the adjustment mechanism, allowing them to extend and retract smoothly. The inclined grooves and return members enable this flexibility while maintaining relatively simple structural design, reducing overall device complexity compared to rigid extension mechanisms.
4Adaptability or versatility
If side wings are made extendable to improve adaptability, then versatility is improved, but risk of deflection and jamming during operation increases
Solution Approach 1:
The mechanism replaces complex mechanical linkages with a simpler system based on inclined grooves and return members. The inclined grooves guide the driving rods along a predetermined path, eliminating the need for complex joints and connectors that could cause deflection or jamming, while still achieving full adjustability.
Data Source
AI summary
A side wing adjustment mechanism and an adjustable sitting device, the side wing adjustment mechanism includes: a pin arranged on the headrest; and a groove arranged on one of the side wings and including an inclined groove portion and a non-inclined groove portion. The pin is slidable along the inclined groove portion to adjust an extension distance of the one of the side wings and slidable along the non-inclined groove portion to adjust the height of the headrest relative to the backrest. The side wing can be folded and opened at will, and the structure of the application is more inclusive. During the opening and folding process, puling of the headrest or pushing of the side wing can be performed more smoothly and labor-savingly, and the phenomenon of deflection and jamming can be avoided, such that the opening and folding process of the side wings is smoother.