Single-Motor Cleaning Robot Driving Wheel and Impeller Speed Reduction
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Solution Overview
Problem
Existing cleaning robots require two motors to provide different rotating speeds for the driving wheel and impeller, leading to increased weight, space occupation, and cost due to the need for separate motor units.
Innovation Solution
A cleaning robot design that uses a single motor to simultaneously drive both the driving wheel and impeller through a connector and speed reducer, allowing for different rotating speeds by utilizing a planetary gear reduction mechanism or belt pulley, resulting in a compact, lightweight, and cost-effective structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If two motors are used to provide different rotating speeds for the driving wheel and impeller, then the rotating speed requirements are met, but the weight increases
Solution Approach 1:
The patent combines two separate motors into a single motor system. The first motor is directly connected to the impeller, while the second motor drives the driving wheel through a belt pulley transmission system. This merging reduces the total number of motors from two to one, thereby reducing the weight of the cleaning robot while still meeting the different rotating speed requirements of the impeller and driving wheel through the belt pulley mechanism.
2Speed
If two motors are used to provide different rotating speeds for the driving wheel and impeller, then the rotating speed requirements are met, but the internal space is occupied
Solution Approach 1:
The patent merges two motor units into a single integrated motor system. The first motor is positioned to directly drive the impeller, while the second motor is arranged to drive the driving wheel through a belt pulley system. This consolidation reduces the number of separate motor housings, mounting brackets, and associated components, thereby freeing up internal space within the cleaning robot body.
3Speed
If two motors are used to provide different rotating speeds for the driving wheel and impeller, then the rotating speed requirements are met, but the product cost increases
Solution Approach 1:
The patent consolidates two separate motor purchases into one, directly reducing component costs. Additionally, the belt pulley transmission system is a simpler and more cost-effective solution compared to using two independent motors with their respective control systems, mounting hardware, and wiring. The reduced part count also lowers assembly costs and simplifies manufacturing processes.
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
Enables efficient operation with a single motor, reducing weight and cost while maintaining stable performance and compact design by allowing the impeller and driving wheel to operate at different speeds, thus addressing the limitations of prior art.
Implementation Method 1
a speed reducer is connected between the connector and the second rotating shaft
Implementation Method 2
The planetary gear reduction mechanism includes a first planetary gear reducer and a second planetary gear reducer
Data Source
AI summary
Disclosed is a cleaning robot capable of simultaneously driving a driving wheel and an impeller by a single motor, including a motor output shaft, a driving wheel provided with a second rotating shaft and an impeller provided with a first rotating shaft; a connector is connected between the motor output shaft and the first rotating shaft; and a speed reducer is connected between the connector and the second rotating shaft. The cleaning robot moves forward and backward and makes a turn by the driving wheel, allows wastes to enter an internal filter element under the action of negative pressure generated by the internal impeller, and discharges the purified water or air out of the equipment. The present invention can simultaneously drive the impeller and the driving wheel by using only one motor and can enable the driving wheel and the impeller to generate different rotating speeds.