Playard Bassinet Height Adjustment for Level Positioning

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Solution Overview

Problem

Conventional playards with detachable bassinets face inconvenience due to fixed or limited depth adjustments, which hinder caregivers' ability to easily access babies, and existing height adjustment mechanisms fail to maintain the bassinet in a horizontal and steady position during adjustments.

Innovation Solution

A playard with a height adjustment device comprising adjustors and retainers that allow the bassinet to be moved horizontally, ensuring it remains level and can be adjusted to any desired height, using extendable belts that connect to the frame body and bassinet sides, allowing for easy access and arbitrary height adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the bassinet depth is increased to provide better security and sheltering for the baby, then the baby's safety is improved, but the caregiver must bend down excessively to access the baby, reducing convenience

Engineering Contradiction:
Improvebaby securityVSAvoidcaregiver access convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The bassinet depth is made dynamically adjustable through a height adjustment device with an adjustor that can be extended or retracted. This allows the bassinet to transition between deep (for security) and shallow (for accessibility) configurations, resolving the contradiction between baby security and caregiver convenience.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If conventional height adjustment mechanisms are used, then height adjustment is possible, but the bassinet cannot maintain horizontal position during adjustment, causing disturbance to the baby

Engineering Contradiction:
Improveheight adjustabilityVSAvoidbassinet horizontal stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The height adjustment device employs asymmetric structural design where the adjustor connects to the bassinet body at specific asymmetric points. This asymmetric connection geometry ensures that during adjustment, the bassinet body maintains horizontal orientation rather than tilting, thus preserving baby comfort while enabling height adjustability.

Inventive Principle:
Principle #4Asymmetry

3Adaptability or versatility

If two-way depth adjustment is provided using zipper or coupling mechanisms, then two depth alternatives are available, but arbitrary depth adjustability is not attainable

Engineering Contradiction:
Improvedepth adjustability optionsVSAvoidadjustment mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The adjustor is designed as a continuous adjustment mechanism rather than discrete stepped adjustment. This allows the bassinet depth to be adjusted to any arbitrary position within the adjustment range, providing continuous adaptability without requiring complex multi-position mechanisms.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS7543342B2Playard
Publication Date: 2009.06.09 WONDERLAND NURSERYGOODS CO LTD
  • US7543342B2 patent drawing
  • US7543342B2 patent drawing
  • US7543342B2 patent drawing

AI summary

In a playard, the bassinet has adjustors with one ends connecting to a first side of the bassinet body and the other ends to a second side of the bassinet body. The adjustors extend from the first side toward and cross a first side rail of the frame body, reaching to the bottom panel of the frame body and into the frame body, and connecting to the second side of the bassinet body. The playard includes two retainers, each mounting on the second side rail of the frame body. Pulling the adjustors brings the first side and the second side of the bassinet body to move up or down by the same distance. The bassinet can therefore maintain horizontal and be adjusted to an arbitrary height during height adjusting.