Side Impact Protection Linkage for Auto-Deploying Safety Seat Bases
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Solution Overview
Problem
Existing child safety seat side impact protection devices often fail to function effectively due to complex and insensitive driving mechanisms, leading to neglect in activation, which compromises their protective capabilities during accidents.
Innovation Solution
A side impact protection linkage mechanism with a simple structure and sensitive response, featuring a support frame with an engaging member and linkage member, where the linkage member's downward movement drives the engaging member to unlock the side impact protection block, allowing it to extend automatically for protection, and a driving member connected to the linkage member for automatic activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a foldable lateral protection device is manually opened, then the device can provide side impact protection, but the structure becomes complicated and the response is not sensitive enough
Solution Approach 1:
The side impact protection block is designed with a tendency to rotate to the expanded position automatically. The elastic member provides restoring force that enables the block to self-expand without manual intervention, eliminating the need for complex driving mechanisms while ensuring reliable protection function
Solution Approach 2:
The linkage member is designed to slide upward and downward along the support frame, converting linear motion into rotational motion of the engaging member. This dynamic mechanism enables sensitive response to minor movements (such as seat installation) and automatically triggers the protection device expansion
2Reliability
If the lateral protection device is manually opened, then protection is provided when child is seated, but users often neglect to open it manually
Solution Approach 1:
The mechanism automatically activates the side impact protection block through the interaction between the linkage member and engaging member. When the seat is installed or during normal use, the driving member forces the linkage member to slide downward, which rotates the engaging member and releases the lock portion, causing the block to automatically expand without requiring user action
Solution Approach 2:
The engaging member is pre-configured with a lock portion that can engage with the side impact protection block to lock it at the folded position. The linkage member is positioned to automatically disengage this lock when activated, ensuring the protection device is ready to deploy immediately when needed
3Volume of moving object
If the lateral protection device is folded to avoid occupying lateral space, then space is saved when child leaves seat, but the device cannot function well if not opened
Solution Approach 1:
The side impact protection block is designed as a foldable structure that can transition between folded and expanded positions. The linkage member and engaging member work together to enable automatic transition from folded to expanded state through sliding and rotating motions, ensuring the device maintains compact form during storage while reliably deploying for protection when activated
Solution Approach 2:
The elastic member provides restoring force that maintains the block in the expanded protective position once activated. The mechanism automatically transitions from the folded storage state to the expanded protection state without manual intervention, ensuring the device functions reliably while minimizing space occupation during non-use
Data Source
AI summary
A side impact protection linkage mechanism (100) includes a side impact protection block (10). The side impact protection block (10) is pivotally connected to a side wall (20) of a safety seat base (200) and has a folded position attached to the side wall (20) and an expanded position away from the side wall (20). A support frame (11) is disposed in the side wall (20). The support frame (11) is equipped with an engaging member (12) and a linkage member (13). An end of the engaging member (12) is pivotally connected to the support frame (11) and another end of the engaging member (12) has a lock portion (120) slidably protruding from the side wall (20). The engaging member (12) is detachably engaged with the side impact protection block (10) through the lock portion (120). The linkage member (13) is disposed below the engaging member (12) and capable of sliding upward and downward along the support frame (11). The linkage member (13) is configured to drive the engaging member (12) rotate downward.