Bed Rail Rotating Seat Lock for Low-Part Child Guard Frames

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Solution Overview

Problem

Bed rails designed to prevent children from falling out of bed are often expensive due to numerous parts requiring assembly and complex metal components, which increases production costs and operational complexity.

Innovation Solution

A bed rail design featuring a guard frame with a rotating seat mechanism that pivots between up and down positions, utilizing a limited number of integral sections and plastic components to reduce costs and simplify assembly, with a strap system to secure the frame to the bed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If bed rail apparatus includes many parts and metal components to ensure safety and functionality, then reliability is improved, but device complexity and manufacturing cost increase

Engineering Contradiction:
Improvesafety effectivenessVSAvoidnumber of parts
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into fewer integrated components. The guard frame integrates both the protective barrier function and the anchoring function by incorporating leg assemblies that directly attach to the bed structure. The rotating seat mechanism combines the locking and unlocking functions into a single mechanical system, reducing the total number of separate parts while maintaining safety effectiveness.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The leg assemblies serve multiple functions: they provide structural support for the guard frame, enable rotational movement for opening/closing operation, and incorporate anchoring mechanisms to secure the device to the bed. This multi-functionality reduces the need for separate components for each function, thereby reducing overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Strength

If bed rail apparatus uses many metal parts to ensure strength and durability, then strength is improved, but manufacturing cost increases

Engineering Contradiction:
Improvestructural strengthVSAvoidmanufacturing cost
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The patent employs composite construction by combining metal components (for strength-critical areas like the guard frame and leg assemblies) with plastic or polymer components (for non-critical structural elements and moving parts). This composite approach maintains necessary structural strength while reducing the total amount of expensive metal material required, thereby lowering manufacturing costs.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If bed rail apparatus includes complex mechanisms to enable opening and closing functionality, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveopening and closing functionalityVSAvoidoperational complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a rotating seat mechanism that allows the guard frame to dynamically transition between locked and unlocked positions through simple rotational movement. This dynamic mechanism provides adaptability for opening and closing functionality while maintaining operational simplicity, as the rotation action is intuitively understood and easy to perform by users.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rotating seat mechanism is designed to be self-locking through its geometric configuration, where the rotation itself engages or disengages the locking condition without requiring additional actuators or complex control systems. This self-service characteristic reduces operational complexity while maintaining the desired adaptability.

Inventive Principle:
Principle #25Self-service

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 design minimizes metal usage, reduces assembly complexity, and lowers production costs while maintaining effective prevention of children from falling out of bed, offering a cost-effective and user-friendly solution.

Implementation Method 1

a rotating seat for engaging a pin extending from the guard frame, where the rotating seat rotates in one direction to capture and contain the pin in the seat and to fix the guard frame in the up position

Methodology Applied
Scientific EffectMechanical engagement: Mechanical Fastener

Implementation Method 2

the rotating seat rotates in the other direction to orientate an opening of the seat along an arc through which the pin swings to permit the pin out of the seat

Methodology Applied
Scientific EffectRotational motion:

Implementation Method 3

orientate an opening of the seat along an arc through which the pin swings

Methodology Applied
Scientific EffectArc motion:

Implementation Method 4

the rotating seat includes a tab and where the leg includes a semi-circular slot having first and second ends, where the tab engages the slot, where the opening of the seat is aligned with the arc only when the tab engages the front or first end of the semi-circular slot, and where the seat captures and locks the pin when the tab is in any position other than the front and first end of the semi-circular slot

Methodology Applied
Scientific EffectMechanical constraint: Mechanical Fastener

Implementation Method 5

the seat for the pin having a U-shaped interior seating portion that seats a head of the pin, where the U-shaped interior seating portion can intersect, when the seat is rotated, the arc defined by the head of the pin as the guard frame swings between the up and down positions

Methodology Applied
Scientific EffectGeometric containment:

Implementation Method 6

a first junction between the guard frame and the legs such that the guard frame can swing between up and down positions

Methodology Applied
Scientific EffectPivotal rotation:

Data Source

PatentUS8458831B2Bed rail having rotating seat for guard frame
Publication Date: 2013.06.11 REGALO INTERNATIONAL LLC
  • US8458831B2 patent drawing
  • US8458831B2 patent drawing
  • US8458831B2 patent drawing

AI summary

A bed rail having a guard frame that prevents a child from rolling off a bed and a pair of legs that extend between the mattress and box spring. The guard frame swings between up and down positions and is pivotally connected to the legs via a first junction. A second junction locks the guard frame to the legs. The second junction includes a rotatable seat that engages a pin extending from the guard frame. The bed rail further includes a strap that engages a proximal end of a leg, a distal end of the leg, and an anchor, which engages the side of the bed opposite of the bed rail.