Infant Car Seat Stability Leg With Multi-Stage Locking
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Solution Overview
Problem
Conventional infant car seat stability legs lack multi-phase adjustment capabilities, which can lead to instability during vehicle collisions and difficulties in storage.
Innovation Solution
The infant car seat features a stability leg with an upper, middle, and lower leg tube, along with a rotary member and latches for adjustable positioning. A release actuator with a handle portion and locking mechanism allows for easy operation and storage modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional stability leg with two leg tubes and one latch is used, then the structure is simple, but multi-phase adjustment capability is lost
Solution Approach 1:
The stability leg is divided into three separate leg tubes (first, second, and third) that can be independently adjusted and locked at different positions. Each leg tube can be extended or retracted relative to the others, providing multiple adjustment phases and positions to adapt to different installation scenarios and vehicle types.
Solution Approach 2:
The stability leg incorporates dynamic adjustment capabilities through multiple latches that can lock the leg tubes at various positions. The leg tubes can be extended or retracted during installation and locked at desired positions, allowing the stability leg to adapt dynamically to different spatial requirements and collision scenarios.
2Stability of the object's composition
If the stability leg is fixed in operation mode, then stability during collision is improved, but storage and transport become difficult
Solution Approach 1:
The stability leg transitions from a fixed state during operation to a movable state during storage. Multiple latches enable the leg tubes to be locked at various positions during installation to ensure stability, but can be unlocked and collapsed into a compact configuration for storage and transport, providing operational flexibility.
Solution Approach 2:
The stability leg is segmented into three adjustable leg tubes that can be independently positioned and locked. During storage, these segmented tubes can be collapsed relative to each other and locked in a compact configuration, enabling easy storage and transport while maintaining structural integrity.
3Adaptability or versatility
If the stability leg allows free movement for adjustment, then adaptability is improved, but locking mechanism complexity increases
Solution Approach 1:
The locking mechanism is segmented into multiple independent latches, each responsible for locking a specific leg tube at a specific position. This segmentation allows each latch to be simple in design while the combination of multiple latches provides comprehensive adjustment and locking capability for all leg tubes.
Solution Approach 2:
The latches are designed to automatically engage with corresponding slots or positions on the leg tubes when the tubes are extended or retracted to desired positions. This self-locking mechanism reduces the complexity of manual locking operations while maintaining adjustment flexibility and secure positioning.
Data Source
AI summary
An infant car seat includes a seat base and a stability leg. The stability leg includes an upper leg tube, a middle leg tube, a lower leg tube, a rotary member, a first latch and a second latch. The middle leg tube includes at least one hole. The lower leg tube includes at least one opening. The rotary member is assembled with the seat base and affixed to the upper leg tube. The first latch is disposed on a bottom of the upper leg tube and adapted to detachably engage with the at least one hole for constraining a movement between the upper leg tube and the middle leg tube. The second latch is disposed on a bottom of the middle leg tube, and adapted to detachably engage with the at least one opening for constraining a movement between the middle leg tube and the lower leg tube.