Adjustable Child Restraint Chest Clip with Multi-Position Locking
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Solution Overview
Problem
Current child safety seat chest clips are not adaptable to accommodate children of different sizes, failing to provide a suitable fit for varying body types.
Innovation Solution
A chest clip device with adjustable connectors that can engage and lock at multiple positions, allowing the shoulder straps to be held at different distances to accommodate children of different sizes, featuring a resilient engaging part and a catch structure for secure adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-position chest clip is used, then the structure is simple and easy to manufacture, but it cannot accommodate children of different sizes
Solution Approach 1:
The chest clip is designed with movable connectors that can be positioned at multiple locations along the shoulder straps. The engaging part can selectively engage with the catch structure at different positions, allowing the distance between shoulder straps to be adjusted dynamically based on the child's size, thereby resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The chest clip is divided into separate components including a first connector, a second connector, and an engaging part that can move independently between the connectors. This segmentation allows each component to perform its specific function while enabling overall adjustability without significantly increasing manufacturing complexity.
2Adaptability or versatility
If the chest clip allows adjustment to different positions, then it can fit children of various sizes, but the engagement mechanism becomes more complex
Solution Approach 1:
The engaging part is designed to be resilient and capable of self-engagement with the catch structure. When the connectors are moved to different positions, the engaging part automatically engages or disengages from the catch structure through its resilient nature, eliminating the need for complex manual locking mechanisms and reducing overall device complexity while maintaining adjustability.
3Ease of operation
If the chest clip uses a resilient engaging part, then the adjustment is smooth and secure, but the manufacturing precision requirements increase
Solution Approach 1:
The engaging part is designed with resilient properties that allow it to deform elastically during engagement and disengagement. This parameter change (elastic deformation) enables smooth adjustment operations and secure locking, while the tolerances are distributed across the resilient component rather than requiring high precision in all engagement surfaces, thereby reducing overall manufacturing precision requirements.
Data Source
AI summary
A child restraint harness includes first and second shoulder straps, a first chest clip connector held with the first shoulder strap and having an engaging part, and a second chest clip connector held with the second shoulder strap and having a catch structure. The engaging part is operable to engage and lock with the catch structure selectively at a first position to hold the first and second shoulder straps apart from each other at a first distance, and at a second position to hold the first and second shoulder straps apart from each other at a second distance greater than the first distance.