Foldable Rollator Handle Tube Angles for Ergonomic Support
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Solution Overview
Problem
Existing rollators lack flexibility in adjusting the angle of their handrails, limiting their functionality and user comfort.
Innovation Solution
The rollator design allows for adjustable handrails that can switch between two inclined states, enhancing user convenience and comfort by accommodating different user needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the handrail tube is fixed on the frame, then the structure is simple and stable, but the rollator lacks flexibility and has single function
Solution Approach 1:
The handrail tube is changed from a fixed static connection to a rotatable dynamic connection with the frame. The rotatable connection allows the handrail tube to switch between different inclined states (first inclined state and second inclined state), enabling the rollator to adapt to different user needs while maintaining structural simplicity through a single degree of freedom rotation mechanism.
2Ease of operation
If the handrail tube is fixed at a single angle, then the structure is simple, but the user comfort and ergonomics are limited
Solution Approach 1:
The handrail tube's inclination angle parameter is made adjustable between two specific states. The first inclined state provides a first angle with the support surface, while the second inclined state provides a second angle, allowing users to select the most comfortable angle for their needs. This parameter change is achieved through the rotatable connection mechanism without requiring complex adjustment systems.
Data Source
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AI summary
A rollator, comprising a frame body, pedal assemblies, a backrest assembly, and a seat assembly. The frame body comprises a first frame, a second frame, and a connecting frame; the seat assembly is arranged on the connecting frame; the first frame is connected to the second frame by means of the connecting frame and can be folded towards the second frame; the pedal assemblies are rotatably connected or detachably mounted on the first frame and the second frame and are located below the connecting frame; the backrest assembly is rotatably connected or detachably mounted on the first frame and the second frame and are located above the connecting frame; a first handle tube is rotatably connected to the first frame, and a second handle tube is rotatably connected to the second frame; and the first handle tube and the second handle tube each have a first inclined state in which the first handle tube and the second handle tube form a first included angle with a supporting surface on which the frame body is placed and a second inclined state in which the first handle tube and the second handle tube form a second included angle with the supporting surface, wherein the first included angle ranges from 80° to 90°, and the second included angle ranges from 65° to 75°.