Rotatable Bed Movable Lift Device Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional movable lift devices are inconvenient for navigating through narrow spaces and pose a risk of accidents due to instability when rotating, potentially causing injuries to caregivers and patients.
Innovation Solution
A movable lift device with a rotatable bed featuring a post structure that includes a perpendicular and horizontal portion, allowing the bed to rotate independently while maintaining stability, and a stopper mechanism to limit rotation and prevent unintended movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the entire movable lift device is rotated to pass through narrow spaces, then the device can navigate corridors and doors, but the structure becomes unstable and may overturn
Solution Approach 1:
The patent divides the rotation function into two independent parts: the base frame remains stationary while only the bed assembly rotates around a vertical post. This segmentation allows the bed to navigate narrow spaces without rotating the entire device, maintaining stability of the base frame while achieving the navigability of the bed portion.
2Ease of operation
If the bed is made rotatable to improve movement convenience, then the device can pass through narrow corridors, but the center of mass changes and creates turnover risk
Solution Approach 1:
The patent positions the vertical post at the center of the base frame, creating a counterbalancing effect. The post acts as a pivot point that distributes the rotational forces evenly, preventing the center of mass from shifting to an unstable position during rotation. This ensures the device remains balanced and safe throughout the rotation process.
3Adaptability or versatility
If the bed rotates independently from the base frame, then navigation through narrow spaces is improved, but the mechanism becomes more complex
Solution Approach 1:
The patent combines the rotation function into the existing post structure that already supports the bed. The post serves dual purposes: supporting the bed vertically and enabling horizontal rotation. This merging of functions avoids adding separate complex rotation mechanisms while achieving independent bed rotation for improved navigability.
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
Enhances movement convenience through independent bed rotation, maintains structural stability, and reduces the risk of accidents by preventing overturning and controlling rotation, thereby ensuring safer handling and use.
Implementation Method 1
A guide groove may be formed in the base plate along the passage of the roller moved along the rotation of the post, to guide the movement of the roller.
Implementation Method 2
The stopper may be a brake provided in a hinge where the horizontal portion is rotated to selectively limit the rotation of the hinge.
Data Source
AI summary
A movable lift device including a rotatable bed which can be lifted or rotated by a user, with laying a user thereon. The movable lift device having a rotatable bed includes a base frame comprising a plurality of wheels installed therein; a post rotatably coupled to the base frame, the post upwardly extended from the base frame a predetermined length in an “L” shape; and a bed comprising a bed part that is able to ascend along the post, the bed part allowing a user to lie thereon. The post rotatably supporting the bed has an “L” shape and the supporting point of the post rotatably supporting the bed is formed in the center of the base frame, such that the structure may be stably maintained even when the bed having the patient lying thereon is rotated, only to prevent an accident of overturning the movable lift device.