Upright Vacuum Cleaner Motor Assembly with Non-Parallel Axis Layout
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Solution Overview
Problem
Conventional upright vacuum cleaners have a large motor housing and occupy significant space due to horizontally disposed motors, limiting the arrangement of other components and requiring two motors for driving the brushroll and fan, which complicates the design and increases size.
Innovation Solution
The upright vacuum cleaner features a motor assembly with a rotating axis non-parallel to the brushroll axis, using a drive belt for power transmission and a clutching device that allows the motor to move between upright and oblique positions, reducing motor volume and enabling synchronous control of dust sweep and suction with fewer parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the motor is disposed horizontally with parallel rotating axes, then the motor can drive the brushroll and fan, but the motor housing volume becomes huge and occupies large area
Solution Approach 1:
The patent changes the motor orientation from horizontal to vertical disposition, altering the spatial arrangement from parallel axes to non-parallel (perpendicular or angled) axes. This dimensional change allows the motor housing to occupy significantly less space while maintaining the driving function through belt transmission to the brushroll.
2Power
If two motors are used to drive brushroll and fan respectively, then the driving function is achieved, but the device complexity increases
Solution Approach 1:
The single motor is designed to perform multiple functions: driving the brushroll through belt transmission and driving the fan through direct connection or additional belt transmission. This multi-functional design eliminates the need for two separate motors, reducing device complexity while maintaining complete driving capability for both components.
Solution Approach 2:
The patent merges the functions of two separate motors into a single motor unit. The motor housing contains both the motor shaft connected to the fan and the belt transmission mechanism connected to the brushroll, combining multiple driving functions into one integrated component.
3Power
If the motor is disposed horizontally, then the motor can drive the brushroll, but the arrangement of other parts is limited to a great extent
Solution Approach 1:
By changing the motor disposition from horizontal to vertical, the patent creates new spatial relationships and arrangement possibilities. The non-parallel axis configuration allows other components such as the brushroll, fan, and housing elements to be arranged more flexibly in three-dimensional space, improving adaptability and versatility of the overall structure.
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 results in a compact, stable, and reliable upright vacuum cleaner that occupies less space, simplifies operation, and allows for diverse component arrangements while maintaining efficient dust collection and suction functionality.
Implementation Method 1
the motor drives the brushroll rolling by a drive belt
Implementation Method 2
a first upright position of tensioning the drive belt
Implementation Method 3
a lever cam member rotatably disposed on the motor housing and defining two ends cooperating with the first toggling block and the second toggling block respectively
Data Source
AI summary
An upright vacuum cleaner (1) includes a brushroll (11); a motor assembly (200) including a motor housing (21) and a motor (22), in which a rotating axis of the motor (22) and a rotating axis of the brushroll (11) are disposed in a non-parallel manner, and the motor (22) drives the brushroll (11) rolling by a drive belt (13) and is rotatable between a first upright position of tensioning the drive belt (13) and a first oblique position of loosening the drive belt (13); a body assembly (300) including a body (31), a bridging member (32) and a dirt cup (37) mounted on the body (31), in which the bridging member (32) is rotatably connected with the motor housing (21) to make the body (31) rotatable between a second upright position and a second oblique position, and the motor (22) is moved by the bridging member (32) from the first oblique position to the first upright position when the body (31) moves from the second upright position to the second oblique position.