Cylinder Vacuum Cleaner Steering for Stable Cornering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cylinder vacuum cleaners face challenges in maneuverability and stability, particularly when navigating around corners or avoiding obstacles, due to their design which does not effectively distribute the weight and pivot the separating apparatus relative to the rolling assembly.
Innovation Solution
The vacuum cleaner features a substantially spherical rolling assembly with a steering mechanism that allows relative pivotal movement between the separating apparatus and the rolling assembly, enabling the appliance to pivot and adjust its center of gravity towards the direction of movement, along with inclined wheel axes and a ball and socket joint for a secure fluid connection, enhancing maneuverability and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional castor wheel mounted on a circular support is used, then the vacuum cleaner can swivel in response to direction changes, but the appliance becomes prone to getting trapped against upstanding items and lacks stability during maneuvering
Solution Approach 1:
The rolling assembly is made substantially spherical instead of using a conventional castor wheel on a circular support. This spherical shape enables the separating apparatus to be turned towards the direction of steering by pivoting about a vertical axis, improving both maneuverability and stability. The curved surface allows smooth directional changes without getting trapped against obstacles.
Solution Approach 2:
The steering mechanism is designed to pivot the separating apparatus relative to the rolling assembly about a vertical axis, creating a dynamic system that actively adjusts the center of gravity towards the direction of movement. This dynamic adjustment improves stability during maneuvering while maintaining ease of operation.
2Device complexity
If the separating apparatus is fixed relative to the rolling assembly, then the structure is simple, but the appliance cannot effectively adjust its center of gravity during steering
Solution Approach 1:
The vacuum cleaner is divided into functionally independent segments: the rolling assembly and the separating apparatus are separate components that can pivot relative to each other about a vertical axis. This segmentation allows the separating apparatus to be turned towards the direction of steering, improving maneuverability while maintaining reasonable structural simplicity.
Solution Approach 2:
The steering mechanism introduces controlled relative movement between the separating apparatus and rolling assembly. This dynamic capability allows the center of gravity to shift towards the direction of movement during steering, enhancing maneuverability without excessive structural complexity.
3Device complexity
If the wheels have vertical rotational axes, then the design is simple, but the rolling assembly cannot effectively engage the floor surface for rapid directional changes
Solution Approach 1:
The wheels are designed with curved, dome-shaped outer surfaces instead of flat surfaces with vertical rotational axes. This curvature allows the wheels to engage the floor surface more effectively and enables the rolling assembly to spin on its point of contact, facilitating rapid directional changes including 180-degree turns.
Solution Approach 2:
The rotational axes of the wheels are inclined upwardly towards the main body at an angle of 5-15 degrees from the vertical. This parameter change in the wheel orientation enables better floor engagement and facilitates the spinning motion needed for rapid directional changes while maintaining relatively simple wheel design.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cleaning appliance of the cylinder type comprising separating apparatus (12) for separating dirt from a dirt-bearing fluid flow, a floor engaging rolling assembly (20), and a steering mechanism (32) for steering the cleaning appliance as it is manoeuvred over a floor surface and for pivoting the separating apparatus relative to the rolling assembly.