Telescopic ISOFIX Child Seat Base for Stable Age Adjustment
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Solution Overview
Problem
Existing child safety seats with ISOFIX standard suffer from unstable connections, leading to shaking and discomfort or safety issues, and are inflexible for children of different ages.
Innovation Solution
A child safety seat design featuring a telescopically adjustable ISOFIX assembly with a base, utilizing a sliding rail and sleeve system for enhanced stability and adjustability, including an operating mechanism with engaging hooks and elastic members for easy adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ISOFIX assembly is fixed rigidly to the base using screws, then the connection stability is improved, but the adjustability for different ages of children deteriorates
Solution Approach 1:
The ISOFIX assembly is designed with a telescopic adjustment mechanism that allows it to move relative to the base through sliding rails and engagement holes. This dynamic structure enables the ISOFIX assembly to be adjusted to different positions while maintaining stable connection through engagement holes that lock into place, thus resolving the contradiction between connection stability and adjustability for different ages of children.
2Adaptability or versatility
If the ISOFIX assembly is made adjustable for different positions, then the adaptability for different ages is improved, but the connection stability deteriorates due to potential loosening
Solution Approach 1:
The telescopic adjustment mechanism incorporates engagement holes at specific positions along the sliding rail. When adjusted, the engagement hole locks into place to maintain stable connection. This dynamic locking mechanism enables both adjustability for different positions and connection stability, preventing loosening while allowing position changes.
Solution Approach 2:
The ISOFIX assembly allows changing the position parameter along the sliding rail through the telescopic mechanism. The engagement holes provide discrete stable positions, enabling the system to maintain stability at each position while allowing adjustment between positions, thus resolving the contradiction between adaptability and connection stability.
3Device complexity
If a simple single-rail sliding mechanism is used, then the device complexity is reduced, but the stability and shaking reduction deteriorates
Solution Approach 1:
The sliding mechanism is segmented into multiple components: sliding rails, sleeve portions, and engagement holes. This segmentation allows the mechanism to maintain simplicity while achieving stable connection and shaking reduction through the coordinated interaction of these segmented elements, resolving the contradiction between device complexity and stability.
Data Source
AI summary
A child safety seat includes an ISOFIX assembly and a base. The ISOFIX assembly includes a support foot, a connecting portion, and a sliding rail portion between the support foot and the connecting portion. The connecting portion connects to a car seat. The sliding rail portion includes a first sliding rail portion and a second sliding rail portion connected to the first sliding rail portion. A width of the second sliding rail portion is larger than a width of the first sliding rail portion. The base has a frame assembly which has a sleeve portion slidably sleeved on the sliding rail portion. The sleeve portion includes first and second sleeve portions slidably sleeved on corresponding first and second sliding rail portions. The base is operable to be adjusted telescopically with respect to the ISOFIX assembly through a sliding cooperation between the sliding rail portion and the sleeve portion.