Child Safety Seat Backrest Locking for Easy Detachment

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Solution Overview

Problem

Conventional child safety seat locking mechanisms are complex and not user-friendly, making it difficult to easily and conveniently attach and detach the backrest from the base.

Innovation Solution

A backrest locking mechanism with a locking pin, locking component, and operating component, where the locking pin and locking hole structure engage or disengage based on the operation of the operating component, allowing for simple and reliable attachment and detachment of the backrest and base.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional locking mechanism is used, then the backrest can be secured to the base, but the structure becomes complicated and operation becomes difficult

Engineering Contradiction:
Improvesecuring capabilityVSAvoidlocking mechanism structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The locking mechanism is divided into separate functional components: a locking pin on the base, a locking component on the backrest with a locking hole structure, and an operating component. This segmentation allows each part to perform its specific function independently, simplifying the overall structure while maintaining securing capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The locking and releasing functions are extracted into distinct elements. The locking pin and locking hole structure handle the securing function, while the operating component separately handles the user interaction for locking and releasing, eliminating the need for complex integrated mechanisms.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If a conventional locking mechanism is used, then the backrest can be secured to the base, but the attachment and detachment operation becomes inconvenient

Engineering Contradiction:
Improveattachment reliabilityVSAvoidattachment and detachment convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The operating component is designed to automatically drive the locking pin and locking hole structure to engage or disengage when operated. The mechanism performs the locking and releasing actions automatically in response to simple user input, making operation convenient while ensuring reliable attachment.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The locking pin and locking hole structure are pre-positioned on the base and backrest respectively. When the operating component is actuated, these pre-positioned elements immediately engage or disengage, providing quick and convenient attachment and detachment without requiring complex manual manipulation.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the locking pin and locking hole structure are always engaged, then the backrest is securely attached, but the backrest cannot be detached for transportation and storage

Engineering Contradiction:
Improveattachment securityVSAvoiddetachability for transport
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The locking mechanism transitions from a static engaged state to a dynamic system where the operating component can easily switch between locked and unlocked states. This allows the backrest to be securely attached during use and quickly detached for transportation and storage, providing adaptability while maintaining security.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The operating component serves as an intermediary that controls the engagement and disengagement of the locking pin and locking hole structure. By introducing this mediator, the system allows easy switching between attached and detached states without compromising the security of the attached state.

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The mechanism provides a simple structure for easy and convenient operation while ensuring reliable attachment of the backrest and base, enhancing user experience and safety.

Implementation Method 1

The recovering component is resiliently deformed when the operating component is operated, and the resiliently deformed recovering component drives the operating component to recover

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11766958B2Backrest locking mechanism and child safety seat therewith
Publication Date: 2023.09.26 WONDERLAND SWITZERLAND AG
  • US11766958B2 patent drawing
  • US11766958B2 patent drawing
  • US11766958B2 patent drawing

AI summary

A backrest locking mechanism adapted for a backrest and a base of a child safety seat is provided. The backrest locking mechanism includes a locking pin, a locking component and an operating component. The locking pin is disposed on the base. The locking component is disposed on the backrest. A locking hole structure is formed on the locking component. The locking pin is configured to detachably engage with the locking hole structure. The operating component is movably disposed on the backrest or the base. The operating component drives the locking pin and the locking hole structure to engage with or disengage from each other when the operating component is operated. Besides, a child safety seat including the aforementioned backrest locking mechanism is provided.