Upright vacuum cleaner
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Solution Overview
Problem
Upright vacuum cleaners often experience reduced dust suction efficiency due to the brushroll casing separating from the cleaning surface, leading to incomplete cleaning and secondary pollution from dust kicked up by the gap between the brushroll and the surface.
Innovation Solution
An upright vacuum cleaner design featuring a brushroll assembly with an elastic assembly between the brushroll casing and a bridging member, which is pivotally connected to the motor housing, allowing the brushroll to abut the surface when the body rotates from an upright to an oblique position, enhancing dust collection and preventing secondary pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the brushroll casing is designed to be lightweight and simple, then manufacturing cost is reduced, but the brushroll casing easily separates from the surface to be cleaned, degrading dust suction effect
Solution Approach 1:
The bridging member is designed to be rotatable relative to the motor housing, allowing the brushroll assembly to dynamically adjust its position. When the vacuum cleaner body tilts during use, the bridging member rotates to maintain the brushroll's contact with the surface, ensuring stable cleaning performance without requiring a complex fixed structure
Solution Approach 2:
The elastic assembly automatically pushes the brushroll casing to maintain contact with the surface based on the body's tilt angle. This self-adjusting mechanism eliminates the need for external control systems or complex mechanical linkages, achieving reliable brush contact through the inherent elastic deformation and recovery of the material
2Adaptability or versatility
If the brushroll casing is allowed to lift off the surface, then the structure becomes more flexible and adaptable, but impurities kicked up from the gap cause secondary pollution
Solution Approach 1:
The elastic assembly pre-applies a downward force on the brushroll casing to maintain contact with the surface before any lifting occurs. This preliminary action prevents the formation of gaps that would allow impurities to be kicked up, thereby preventing secondary pollution before it can happen
Solution Approach 2:
The bridging member is pre-configured in a position that, when the body tilts, it automatically pushes the brushroll assembly down onto the surface. This preliminary positioning ensures the brushroll maintains contact during the transition, preventing dust kick-up that would occur if the brushroll lifted off the surface
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
Improves cleaning efficiency by ensuring the brushroll consistently contacts the surface, reducing secondary pollution and enhancing overall cleaning effectiveness.
Implementation Method 1
an elastic assembly provided between the brushroll casing and the bridging member, and configured to be pressed downward against the brushroll casing by the bridging member when the body rotates from the upright position to the oblique position
Data Source
AI summary
An upright vacuum cleaner (1) includes a brushroll assembly (100) having a brushroll casing (12) and a brushroll (11); a motor assembly (200) having a motor housing (21) and a motor (22); a body assembly (300) having a body (31) and a bridging member (32), in which the bridging member (32) is pivotally connected to the motor housing (21) to make the body (31) rotatable between an upright position and an oblique position; and an elastic assembly (4) provided between the brushroll casing (12) and the bridging member (32), and configured to be pressed downward against the brushroll casing (12) by the bridging member (32) when the body (31) rotates from the upright position to the oblique position.