Segmented Adjustable Bed Frame With Cylinder-Driven Leg Support

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Solution Overview

Problem

Conventional automatically operated beds have complex drive mechanisms that increase fabrication costs and maintenance difficulties, and they cannot operate individual cushions according to user preferences, leading to discomfort due to constant leg bending.

Innovation Solution

The bed features a simplified construction with pivotally mounted drive cylinders and retractable drive rods that allow individual or simultaneous operation of frames to adjust cushion bending states, including an auxiliary frame with rollers for smooth leg support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a complex drive mechanism with elastic wires and connecting brackets is used to operate cushions, then the bed can achieve automated cushion adjustment, but the fabrication costs increase and maintenance becomes difficult

Engineering Contradiction:

Improveautomated cushion adjustmentVSAvoiddrive mechanism construction

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The patent replaces the complex mechanical drive mechanism (elastic wires, connecting brackets, pivot arms) with a simplified hydraulic or pneumatic cylinder system. The cylinders directly push the frames to adjust cushion positions, eliminating the need for elastic wires and connecting brackets while achieving the same automated cushion adjustment function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent divides the bed frame into separate segments (first frame for head cushion, second frame for leg cushion) that can be independently controlled by separate cylinders. This segmentation allows each cushion to be adjusted individually without requiring a unified complex mechanical linkage system.

Inventive Principle:

Principle #1Segmentation

2Extent of automation

If elastic wires are used to drive the rear cushion to bend constantly, then automated operation is achieved, but the user's legs are kept in a bent state causing discomfort

Engineering Contradiction:

Improveautomated rear cushion operationVSAvoiduser comfort

Core Design Contradiction:

Extent of automationVSEase of operation

Solution Approach 1:

The patent makes the rear cushion position dynamic and adjustable rather than constantly bent. The second cylinder can adjust the second frame to different positions, allowing the rear cushion to transition between bent and extended states according to user needs, improving comfort while maintaining automated operation.

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If the drive mechanism is designed with multiple components for individual cushion control, then customizable operation is achieved, but the construction becomes complicated increasing fabrication costs

Engineering Contradiction:

Improveindividual cushion operationVSAvoidfabrication cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent uses separate cylinders for each frame segment, allowing independent control of head and leg cushions. This segmentation provides customizable operation while keeping each control unit simple and modular, reducing overall fabrication complexity compared to a single complex mechanical linkage system.

Inventive Principle:

Principle #1Segmentation

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

This design reduces fabrication costs, simplifies maintenance, and provides comfortable leg support by allowing customizable cushion bending states, enhancing user comfort and operational convenience.

Implementation Method 1

a first drive cylinder having a first portion pivotally mounted on the support frame and a second portion provided with a retractable first drive rod

Methodology Applied

Scientific EffectHydraulic or pneumatic pressure: Hydraulic Press

Implementation Method 2

a retractable first drive rod pivotally mounted on a second portion of the first frame

Methodology Applied

Scientific EffectRotational motion through pivot: Lever

Implementation Method 3

an auxiliary frame having a first portion pivotally mounted on a second portion of the second frame and a second portion provided with two rollers

Methodology Applied

Scientific EffectRolling friction reduction: Roller

Data Source

PatentUS7293309B1Automatically operated bed

Publication Date: 2007.11.13 RUOEY LUNG ENTERPRISE

AI summary

An automatically operated bed includes a support frame, a first frame, a first drive cylinder, a second frame, a second drive cylinder, an auxiliary frame, and a cushion. Thus, the first frame and the second frame are lifted or lowered by operation of the first drive cylinder and the second drive cylinder, so that the bed has a simplified construction, thereby decreasing the costs of fabrication. In addition, the auxiliary frame is disposed at a horizontal state by support of the push bar of the second frame until the auxiliary frame so that a user's lower leg is supported by the auxiliary frame in comfortable manner to prevent the user's leg from being bent excessively, thereby providing a comfortable sensation to the user.