Roller brush assembly and cleaning robot
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Solution Overview
Problem
Current cleaning robots face limitations due to fixed roller and side brushes that attach to the ground, restricting movement speed and adaptability, especially when cleaning special areas, as they cannot adjust height or retract properly.
Innovation Solution
A roller brush assembly with a lifting drive motor and transmission assembly, featuring a swing arm that allows the roller brush to lift and adjust its position, enabling self-adaptive floating and improved adaptability by using a lifting transmission mechanism driven by the lifting drive motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the roller brush device keeps attaching with the ground during work progress, then cleaning coverage is maintained, but the speed of movement of the cleaning robot is limited
Solution Approach 1:
The roller brush device is transformed from a static ground-contacting structure to a dynamic one that can automatically lift and lower. The swing arm mechanism allows the roller brush to adapt its position dynamically - attaching to the ground during cleaning for maximum coverage, and lifting during movement phases to eliminate obstruction and improve speed. This dynamic adaptability resolves the contradiction between maintaining cleaning coverage and achieving higher movement speeds.
2Adaptability or versatility
If the height of the roller brush from the ground is fixed, then structural simplicity is maintained, but the ability to clean special areas is limited
Solution Approach 1:
The invention introduces a swing arm mechanism that enables the roller brush height to vary dynamically based on terrain and cleaning needs. The swing arm pivots to adjust the roller brush's vertical position, allowing it to maintain contact with the ground during cleaning while automatically lifting over obstacles or when approaching corners. This dynamic height adjustment capability provides adaptability to special areas without requiring complex manual adjustment mechanisms.
3Ease of operation
If the roller brush device attaches to the ground during return to clean itself, then cleaning function is maintained, but unnecessary cleaning action occurs where cleaning is not needed
Solution Approach 1:
The swing arm mechanism enables the roller brush to automatically lift during the robot's movement phases, including when returning to base for self-cleaning. This dynamic positioning ensures the roller brush only contacts the ground when actual cleaning is required, eliminating wasteful friction and energy consumption during transport and positioning maneuvers. The system thus achieves energy-efficient autonomous operation while maintaining thorough cleaning performance.
Data Source
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AI summary
A roller brush assembly includes a roller brush device, a lifting drive motor, and a lifting transmission assembly. The roller brush device includes a roller brush housing and a roller brush rotatably connected in the roller brush housing, and one side of the roller brush housing is provided with a swing arm. The lifting transmission assembly is connected to the lifting drive motor and driven by the lifting drive motor to drive the swing arm to swing, thereby lifting the roller brush device. Thus, the roller brush device can be lifted and held in a lifted position, thereby improving the adaptability of a cleaning robot having the roller brush assembly.