Isofix Child Safety Seat Dynamic Backrest Adjustment
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Solution Overview
Problem
Current child car safety seats lack advanced mechanisms to dynamically adjust their position relative to the backrest, which can lead to inadequate protection during sudden stops or collisions, as they often rely on fixed angles and lack integrated sensors for real-time adjustments.
Innovation Solution
An adjustment system comprising a controlling unit, isofix motor, angle adjuster motor, sensors (pulling, pressure, and displacement), and a communication module that receives monitoring signals to generate operation commands for the isofix device and angle adjuster, allowing for real-time adjustment of the car safety seat and backrest to enhance safety and compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed angle between seat and backrest is used, then the structure is simple, but the safety protection during sudden stops or collisions is inadequate
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed backrest angle into a dynamically adjustable parameter. The backrest can now change its angle relative to the seat based on real-time monitoring of vehicle conditions (acceleration, deceleration, collision detection). This allows the safety seat to adapt its configuration during sudden stops or collisions, improving safety protection while accepting increased structural complexity through motors, sensors, and control systems.
2Reliability
If an isolated accessory device is used, then the device complexity is low, but the safety function is limited
Solution Approach 1:
The patent implements multi-functionality by integrating multiple safety functions into a single system. The safety seat not only provides basic restraint but also includes collision detection, real-time positioning adjustment, communication with vehicle systems, and adaptive backrest angle control. This universal approach enhances the safety function significantly while accepting increased device complexity through the integration of motors, sensors, controllers, and communication modules.
3Reliability
If real-time monitoring and adjustment system is implemented, then the safety performance is enhanced, but the device complexity increases
Solution Approach 1:
The patent applies feedback principles by implementing a closed-loop control system. Sensors continuously monitor vehicle conditions (acceleration, deceleration, collision) and send signals to the controller, which then adjusts the backrest angle and seat position accordingly. This real-time feedback mechanism enhances safety performance by enabling dynamic adaptation to changing conditions, while the system complexity increases due to the integration of sensors, controllers, and actuation mechanisms.
Data Source
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AI summary
An adjustment system for adjusting relative position between a car safety seat and an onboard backrest is introduced and has a controlling unit to receive a first monitoring signal or a second monitoring signal in response to pressure change, pull change or displacement. The adjustment system allows a backrest of the car safety seat to closely lean against the onboard backrest so that the child sitting on the car safety seat is well protected when in a sudden brake or a collision.