Child Vehicle Seat Secure Base Connection Mechanism

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Solution Overview

Problem

Existing child vehicle seats lack a secure connection to the base when the pins are unlocked, leading to potential falls and injuries, as there is no predefined position ensuring all pins are locked, and the seat can only rest on rails, increasing the risk of accidental disconnection.

Innovation Solution

A child vehicle seat design that includes a detachable and swivelable seat with slots ensuring the seat remains connected to the base during reclining, using pins and slots to maintain a secure attachment and allowing easy locking and unlocking, with a slidable element and handle for easy adjustment, ensuring the seat is always connected to the base.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the seat is made detachable and connected only via pins to the base, then the seat can be easily removed and used on different bases, but the seat may accidentally fall when pins are unlocked during reclining

Engineering Contradiction:

Improveease of seat removal and interchangeabilityVSAvoidsafety connection between seat and base

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The connection system is segmented into two independent functions: pins for detachable connection between seat and slide, and slots for maintaining connection between slide and base during reclining. This segmentation allows the seat to be easily removed while preventing accidental falls during adjustment.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The slide acts as an intermediary component between the seat and base. The seat connects to the slide via pins, while the slide connects to the base via slots during reclining. This intermediary structure enables easy seat removal while maintaining safety connection through the base-mounted slots.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If the pins are used for both connecting seat to base and enabling reclining motion, then the structure is simple, but there is no predefined position ensuring all pins are locked

Engineering Contradiction:

Improvesimplicity of connection structureVSAvoidensuring proper locking of pins

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The locking function is segmented between pins (for detachable connection) and slots (for guiding and ensuring proper positioning during reclining). The slots provide predefined positions that ensure pins are properly locked, eliminating the reliability issue while maintaining structural simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The slots in the base act as intermediaries that guide the pins during reclining motion. The slots provide predefined positions and geometric constraints that ensure pins are properly locked, adding reliability without significantly increasing complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If the seat rests only on rails when pins are unlocked, then the structure is simple, but forces may cause the seat to fall

Engineering Contradiction:

Improvesimplicity of support structureVSAvoidrisk of seat falling and causing injury

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The slots in the base serve as intermediaries that maintain connection between the slide and base during reclining. Even when pins are unlocked, the slots provide geometric constraints that prevent the seat from falling, eliminating the harmful effect while maintaining structural simplicity.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The slots provide predefined positions and geometric constraints before any harmful motion can occur. By designing the slots to guide and constrain the slide throughout the entire reclining range, the system prevents accidental falls before they can happen.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Adaptability or versatility

If the seat includes integrated reclining means, then the reclining function is built-in, but the seat weight and complexity increase

Engineering Contradiction:

Improveintegrated reclining capabilityVSAvoidweight of the seat

Core Design Contradiction:

Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The reclining function is extracted from the seat and relocated to the base. The base now contains the slots that enable reclining motion, while the seat becomes a simpler, lighter component that only needs detachable connection via pins. This extraction reduces seat weight while maintaining the integrated reclining capability of the overall system.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The base is given multi-functionality by incorporating the slots that enable both connection and reclining functions. This allows different seats to be used on the same base, making the base universal while keeping individual seats lightweight and simple.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2228253B1Child vehicle seat as well as a base suitable for such a child vehicle seat

Publication Date: 2012.02.29 MAXI MILIAAN BV

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AI summary

Child vehicle seat comprising a base, provided with at least a support, a slide being swivelable with respect to the support from at least the sitting position to the reclined position and vice versa, a seat being detachably connected to the base and swivelable together with the slide with respect to the support of the base. The child vehicle seat further comprises pins for locking the scat in at least the reclined position and actuating means for unlocking the pins.