Baby Bed Base Fastening Structure for Easy Folding Lock Release

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Solution Overview

Problem

Existing baby bed designs require significant labor to fold, as users must manually rotate and lift a rotary handle to transition from an expanded to a folded configuration, making the bed inconvenient to use.

Innovation Solution

A security fastening structure featuring a base member with connecting rods, stopped components, a stopping bar mechanism, and an elastic element, where the stopping bars contact the stopped components to secure the bed in an expanded configuration and can be easily pivoted away by pulling a cord to facilitate folding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a rotary handle mechanism is used to fasten the connecting rods, then the baby bed can be securely fastened in expanded configuration, but it requires significant labor and complex operation to fold the bed

Engineering Contradiction:
Improvefastening securityVSAvoidfolding convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The invention extracts the essential fastening function from the complex rotary handle mechanism and implements it through a simpler stopping bar mechanism that engages with stopped components on the connecting rods. The fastening action is achieved by the natural gravitational force on the stopping bar rather than requiring manual rotation and lifting operations.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The stopping bar mechanism utilizes gravitational force to automatically engage with the stopped components when the connecting rods are in the expanded position, providing self-fastening without requiring manual operation. The elastic element also provides automatic return to the fastening position after folding.

Inventive Principle:
Principle #25Self-service

2Stability of the object's composition

If the stopping bar mechanism contacts the stopped components, then the baby bed remains firm and stable in expanded configuration, but the mechanism becomes more complex

Engineering Contradiction:
Improvebed stabilityVSAvoidfastening mechanism complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The fastening mechanism is segmented into distinct functional components: stopping bars on the base member, stopped components on the connecting rods, and an elastic element. This segmentation allows each component to perform its specific function independently, achieving stability through simple geometric relationships rather than complex integrated mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of using an active mechanism to prevent bouncing, the invention uses a passive geometric constraint where the stopping bar naturally contacts the stopped component due to the expanded configuration geometry, inverting the approach from active control to passive constraint.

Inventive Principle:
Principle #13The other way round (Inversion)

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 solution ensures the baby bed is firm and stable in use while allowing for effortless conversion to a folded configuration by simply pulling the cord, enhancing user convenience compared to prior designs.

Implementation Method 1

an elastic element is fitted on the bar mechanism to bias the bar mechanism into a stretched state

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS7676860B2Security fastening structure of a base of a baby bed for babies to play in
Publication Date: 2010.03.16 CHENG PAO HSIEN
  • US7676860B2 patent drawing
  • US7676860B2 patent drawing
  • US7676860B2 patent drawing

AI summary

A baby bed includes a base member arranged on a middle of a bottom of a frame thereof; the frame includes two connecting rods, which will extend along a same diagonal line of the bottom of the frame after the baby bed is expanded; two stopped components are joined on inward ends of the connecting rods respectively, and a stopping bar mechanism is pivoted on a middle of the base member; an elastic element is fitted on the stopping bar mechanism to bias the stopping bar mechanism into a stretched state; the stopped components will come into contact with the stopping bar mechanism to prevent the connecting rods from bouncing when the baby bed is in expanded configuration; the stopping bar mechanism will be apart from the stopped components to allow the baby bed to be folded after the stopping bar mechanism is pivoted with its upper ends moving upwards.