Telescoping Load Leg for Child Safety Seat Adjustment

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Solution Overview

Problem

Existing child safety seats lack an adjustable load leg that can accommodate different vehicle types, making it difficult to ensure proper support and stability in both forward- and rear-facing positions.

Innovation Solution

A load leg system comprising telescoping members and engaging assemblies with an operating member, allowing for wide-range adjustment by simultaneous sliding of multiple telescoping components, enabling easy extension or shortening to fit various vehicle configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-length load leg is used, then the structure is simple, but it cannot accommodate different vehicle types

Engineering Contradiction:

Improveadaptability to different vehicle typesVSAvoidload leg structure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The load leg is divided into multiple telescoping members (first telescoping member, second telescoping member, third telescoping member) that can slide relative to each other, allowing the overall length to be adjusted according to different vehicle floor depths and seat positions

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The load leg transitions from a fixed structure to a dynamically adjustable structure through telescoping members that can extend and retract, enabling adaptation to various installation environments while maintaining structural integrity

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple engaging assemblies are added for adjustment, then adjustability improves, but the operation becomes more complex

Engineering Contradiction:

Improveadjustability of load leg lengthVSAvoidease of adjustment operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Multiple engaging assemblies (first engaging assembly, second engaging assembly) are connected through a single operating member via linking members, allowing one operation to simultaneously control the engagement/disengagement of multiple telescoping sections, simplifying the user interface while maintaining adjustability

Inventive Principle:

Principle #5Merging (Combining)

3Length of moving object

If telescoping members are used for extension, then length adjustment range increases, but the device complexity increases

Engineering Contradiction:

Improveload leg length adjustment rangeVSAvoidtelescoping mechanism complexity

Core Design Contradiction:

Length of moving objectVSDevice complexity

Solution Approach 1:

Multiple telescoping members are nested within each other (second telescoping member inside first, third inside second), allowing compact storage when retracted and extended length when needed, achieving wide adjustment range without excessive overall size

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The telescoping mechanism serves multiple functions: providing wide length adjustment range, maintaining structural support, and enabling compact configuration, making the load leg adaptable to various vehicle types and installation positions

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10562418B2Load leg and child safety seat assembly therewith

Publication Date: 2020.02.18 WONDERLAND SWITZERLAND AG

AI summary

A load leg adapted for a child safety seat includes a first telescoping member, a second telescoping member, a third telescoping member, a first engaging assembly, a second engaging assembly, and an operating member. The first engaging assembly is movably disposed on the first telescoping member for engaging with or disengaging from the second telescoping member. The second engaging assembly is movably disposed on the second telescoping member for engaging with or disengaging from the third telescoping member. The operating member is for driving the first engaging assembly and the second engaging assembly simultaneously to allow relative sliding movement of the first telescoping member and the second telescoping member and relative sliding movement of the second telescoping member and the third telescoping member at the same time, which provides a convenient way to extend the load leg between the child safety seat and a floor of a vehicle.