Infant Crib Bi-Fold Sidewall for Pinch-Proof Full Access

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Solution Overview

Problem

Infant cribs with fold-down sides pose a pinching hazard due to the hinge points, and existing designs do not provide sufficient control over access to the bed space, risking injury and not meeting safety standards.

Innovation Solution

A vertical door access system with paired doors that can be opened partially or fully, featuring a pinch-proof hinging system and latching mechanisms operable from the exterior, with automatic reset and temporary door retention mechanisms to prevent doors from being pushed into the crib.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If fold-down sides with horizontal hinges are used, then ease of access to the bed space is improved, but pinching hazard at the hinge point is created

Engineering Contradiction:

Improveease of accessVSAvoidpinching hazard

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potential pinching hazard into a benefit by designing the hinge system so that the hinge body itself acts as a door stop when the door is open, and the hinge includes a finger guard that redirects any pinching force away from the user's fingers, transforming the dangerous feature into a safety feature

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces an intermediary element (the finger guard extending from the hinge) that mediates between the door and the user's fingers, preventing direct contact between the pinching point and the user's body

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If fixed height side walls are used, then safety standards are met and pinching hazards are eliminated, but ease of access to the infant is reduced

Engineering Contradiction:

ImprovesafetyVSAvoidease of access

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent applies dynamics by making the side wall configurable between two states: fixed (for safety) and foldable (for access). The door can be folded down to provide access and then locked in place, allowing the structure to adapt between safety and accessibility needs

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If entire sidewall is opened for access, then ease of access to the infant is improved, but structural rigidity of the front wall is reduced

Engineering Contradiction:

Improveease of accessVSAvoidstructural rigidity

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The patent segments the side wall into multiple independent doors that can be opened individually or together. This allows partial opening for access while keeping other sections closed to maintain structural rigidity, rather than requiring the entire wall to be opened or fixed

Inventive Principle:

Principle #1Segmentation

4Ease of operation

If multiple doors are used to provide access control, then ease of access is improved, but device complexity increases

Engineering Contradiction:

Improveaccess controlVSAvoiddoor system complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into the hinge assembly: the hinge provides the folding mechanism, acts as a door stop when open, provides structural support, and includes integrated locking and latch features. This consolidation reduces overall system complexity despite having multiple doors

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8566979B1Infant crib having paired sets of vertically hinged doors for creating opening along entire sidewall

Publication Date: 2013.10.29 KAYSER PETER

AI summary

A displaceable sidewall of an infant crib made from outwardly rotatable bi-fold door sets that cooperate to open outward to provide limited or complete access to the bed space. Each of the doors has a latch mechanism to retain the doors in a closed position and the central doors have a locking pin for maintaining the integrity of the sidewall when closed and locked.