Bottom for bed apparatus

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Solution Overview

Problem

Existing bed apparatus bottoms with molded metallic plates cause a jagged sensation due to flexing and gaps, and fail to prevent mattress slipping, leading to discomfort and instability.

Innovation Solution

A height-adjustable bed bottom composed of resin plates with depressed portions and passage holes, featuring connecting parts that are thinner and integrally formed, providing a flexible and breathable surface that alleviates pressure and prevents slipping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple metallic plates are joined together to form the bottom, then the bottom can support back-raising and foot-raising operations, but gaps between plates cause a jagged sensation to the user

Engineering Contradiction:

Improveback-raising and foot-raising supportVSAvoidjagged sensation

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The bottom is divided into multiple separate resin plates (back bottom, hip bottom, knee bottom, foot bottom) that can flex independently during back-raising and foot-raising operations, while the segmentation itself is resolved by making connecting parts thin and integral to eliminate gaps

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connecting parts are designed with locally different properties: they are made thinner than the essential parts and formed integrally with them, creating a smooth transition that eliminates the jagged sensation at connection points while maintaining structural integrity

Inventive Principle:

Principle #3Local quality

2Stability of the object's composition

If connecting parts join the essential parts of the bottom, then the bottom maintains structural integrity, but the user may feel a bumpy sensation at connecting parts

Engineering Contradiction:

Improvestructural integrityVSAvoidbumpy sensation

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The connecting parts are designed with locally different properties: they are made thinner than the essential parts and formed integrally with them, creating a smooth transition that eliminates the bumpy sensation at connection points while maintaining structural integrity

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The connecting parts are formed integrally with the essential parts as a single piece, merging the connection function into the structure itself rather than using separate fasteners or joints, which eliminates gaps and bumpy sensations

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If a flat surface bottom is used, then the structure is simple, but pressure points on the user's body are not alleviated

Engineering Contradiction:

Improvebottom structureVSAvoidpressure points

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

Depressed portions are formed in the central part of each bottom plate, creating a curved, concave surface that conforms to the user's body contours, alleviating pressure points while maintaining overall structural simplicity

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The depressed portions are located specifically in the central part of each bottom plate where they correspond to the user's body width, providing localized pressure relief at key contact points (hips, knees) while leaving surrounding areas flat

Inventive Principle:

Principle #3Local quality

4Device complexity

If solid resin plates are used for the bottom, then the structure is simple, but breathability is reduced

Engineering Contradiction:

Improvebottom structureVSAvoidbreathability

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

Passage holes are formed through the depressed portions of the bottom plates, creating a porous structure that allows air circulation and improves breathability while maintaining the overall simplicity of the solid resin plate construction

Inventive Principle:

Principle #31Porous materials

Data Source

PatentUS9814323B2Bottom for bed apparatus

Publication Date: 2017.11.14 PARAMOUNT BED CO LTD

AI summary

To provide a bottom for a bed apparatus that can make the user feel comfortable when lying on the bed apparatus. The bottom for a bed apparatus, which is height adjustable and is mounted on the top of a bed apparatus, comprising a plurality of parts each formed of a resin plate having a thickness, including a back bottom, a hip bottom, a knee bottom and a foot bottom. Of the parts, essential parts are joined by connecting parts, and the connecting parts are formed of the same material with, to be thinner than, and integrally with, the essential parts, and, depressed portions are formed on the top surface of the bottom around the center in the width direction of the bottom, and a plurality of passage holes are perforated in the depressed portions from the top surface to the undersurface of the bottom.