Rotatable Safety Seat Base Assembly for Universal Seat Fit

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Solution Overview

Problem

Existing child safety seats are costly due to the need for multiple replacements as children grow, and current designs do not adequately accommodate varying child sizes without compromising safety.

Innovation Solution

A manipulation assembly for a safety seat base that includes a seat fixing device with a pedestal and manipulation mechanism, allowing for detachable connection and adjustable rotation, enabling a universal base to fit different seat body assemblies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If safety seats are designed as integrated units for different ages, then safety and functionality are ensured, but cost increases and require multiple replacements

Engineering Contradiction:
ImprovesafetyVSAvoidadaptability to different child sizes
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The safety seat system is divided into two independent segments: a reusable base and interchangeable seat bodies. The base remains fixed while only the seat body needs to be replaced as the child grows, transforming a fully integrated design into a modular system that reduces replacement frequency and cost while maintaining safety.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base is designed with universal compatibility to accommodate multiple types and sizes of seat bodies. Through the manipulation assembly with rotatable pedestal and adjustable manipulation mechanism, a single base can serve different child age groups by simply changing the seat body, achieving multi-functionality without compromising safety standards.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Stability of the object's composition

If safety seats are designed as integrated units, then structural stability is maintained, but cost increases due to multiple replacements

Engineering Contradiction:
Improvestructural stabilityVSAvoidcost-effectiveness
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

By segmenting the safety seat into a stable base and removable seat bodies, the structural stability of the base is preserved while eliminating the need to replace the entire integrated unit. The base remains a constant, reliable structure that can support various seat bodies throughout the child's growth.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of discarding the entire safety seat when the child outgrows a specific size, only the seat body is replaced while the base is recovered and reused. This reduces waste and cost by maintaining the valuable base structure across multiple seat body iterations.

Inventive Principle:
Principle #34Discarding and recovering

3Ease of operation

If the base is made rotatable for convenience, then ease of operation improves, but device complexity increases

Engineering Contradiction:
Improveease of installation and adjustmentVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The pedestal is designed to be rotatable rather than fixed, allowing dynamic adjustment of the base orientation. This enables the base to rotate to different angles for convenient installation in various car seat positions and for easy access during child loading/unloading, while the rotation mechanism is kept simple through the manipulation assembly design.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The manipulation assembly acts as an intermediary mechanism between the user's manual operation and the pedestal's rotation. It provides a simple mechanical interface that translates user input into controlled rotation, adding ease of operation without significantly increasing overall structural complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Adaptability or versatility

If the manipulation mechanism is made adjustable for different seat sizes, then adaptability improves, but device complexity increases

Engineering Contradiction:
Improvecompatibility with different seat bodiesVSAvoidmanipulation mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The manipulation assembly is designed with universal adaptability to work with multiple types and sizes of seat bodies. The rotatable pedestal and adjustable manipulation mechanism can accommodate different seat configurations without requiring complex specialized mechanisms for each seat type, achieving versatility through flexible but relatively simple mechanical design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The manipulation mechanism allows for parameter changes in terms of rotation angle and manipulation position to accommodate different seat bodies. By adjusting these geometric parameters rather than changing the fundamental mechanism structure, the system achieves adaptability while keeping device complexity manageable.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3798049B1Manipulation assembly for safety seat base, and safety seat base, kit and manipulation method
Publication Date: 2025.12.17 TRANSTEK INDHKLTD
  • EP3798049B1 patent drawingFigure 1~2
  • EP3798049B1 patent drawingFigure 3~5
  • EP3798049B1 patent drawingFigure 6~7

AI summary

The invention belongs to the technical field of car safety seats, and particularly relates to a manipulation assembly applicable to a safety seat base, a safety seat base with the manipulation assembly and a safety seat kit comprising the base, and a safety seat manipulation method based thereon. The manipulation assembly for a safety seat base according to the invention provides a detachable connection mode by which a seat body is connected thereto, so that the base is universal and can match different types or sizes of seat bodies. To enhance the actual use, the manipulation assembly also has a rotation function to allow the adjustment of the seat orientation and can be mounted or demounted on the seat body, or to adjust the orientation of the seat body when a child is fastened and unfastened upon seating so as to facilitate adult operation. The safety seat base, the safety seat kit and the manipulation method of the invention also have the above functions and advantages accordingly.