Rotating Hook Locking Mechanism for Child Safety Chair ISOFIX
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Solution Overview
Problem
Conventional ISOFIX fixing mechanisms for child safety chairs on vehicle seats are prone to disassembly during vehicle vibrations or accidents, leading to unreliable connections and potential damage, which increases maintenance costs.
Innovation Solution
A fixing mechanism with a connecting frame, engaging component, and driving component, utilizing resilient components to securely lock the child safety chair to the vehicle seat, replacing the conventional buckling method with a rotatable locking mechanism that enhances connection reliability and prevents damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conventional ISOFIX connector is buckled with the ISOFIX interface to fix the child safety chair on the vehicle seat, then the assembly is rapid and simple, but the connection is easily disassembled when the vehicle is vibrated or hit accidentally, decreasing reliability
Solution Approach 1:
The engaging component is designed to rotate between engaged and disengaged positions, transforming the static buckling connection into a dynamic rotatable locking mechanism. This rotational movement allows the hook portion to securely lock into the locking body, preventing accidental disassembly while maintaining ease of operation through simple rotational motion
Solution Approach 2:
The fixing mechanism is divided into distinct functional components: the connecting frame, the engaging component with hook portion, the locking body with opening, and the driving component. This segmentation allows each part to perform its specific function efficiently, with the engaging component responsible for locking and the driving component responsible for actuation, thereby improving overall connection reliability
2Ease of manufacture
If the ISOFIX connector uses a buckling mechanical assembly, then the assembly is simple, but the connector and interface may be damaged easily, shortening serviceable life and increasing maintenance cost
Solution Approach 1:
The rotatable engaging component replaces the static buckling mechanism with a dynamic locking system. The hook portion rotates to engage with the locking body, creating a more robust connection that resists damage from vibrations and impacts, thereby extending the serviceable life of the fixing mechanism while maintaining manufacturing simplicity
Solution Approach 2:
The resilient component is incorporated to provide cushioning and absorb shocks before they can damage the engaging and locking components. This pre-cushioning mechanism protects the mechanical assembly from impact forces during vehicle accidents or rough handling, extending the durability and serviceable life of the fixing mechanism
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed fixing mechanism provides a more reliable and secure connection between the child safety chair and the vehicle seat, reducing maintenance costs by preventing damage to the engaging and connecting components and improving the overall connection reliability.
Implementation Method 1
The driving component utilizes the resilient force of the first resilient component to provide power for the driving component
Implementation Method 2
the second resilient component upwardly pushes the hook portion
Data Source
AI summary
A fixing mechanism of a child safety chair is disclosed in the present invention. The fixing mechanism is disposed on a base of the child safety chair for connecting the child safety chair to a vehicle seat. The fixing mechanism includes a connecting frame, an engaging component and a driving component. An end of the connecting frame is connected to the base, a locking body is disposed on the other end of the connecting frame, and an opening is formed on the locking body. An end of the engaging component pivots to the connecting frame. The driving component is slidably disposed on the connecting frame and connected to the engaging component. The opening of the locking body is closed when the engaging component rotates into the locking body. Further, the opening of the locking body is opened when the driving component rotates the engaging component out of the locking body.