Robot Cleaner Driving Member Assembly for Adaptive Obstacle Passing
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Solution Overview
Problem
Existing robot cleaners face limitations in passing over obstacles due to restricted trajectories provided by the hitting member, often failing to navigate variously shaped obstacles.
Innovation Solution
A robot cleaner design incorporating a driving member assembly with a rotating motor and link assembly that varies the vertical level of the main body relative to the floor, allowing for different hitting radii when rotating forward and rearward, and a sensor system to determine optimal driving times, enabling the robot to escape obstacles and maintain stable movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a member that hits the floor face is included to pass over an obstacle, then the robot cleaner can pass over certain obstacles, but the passable obstacles are limited and the robot often fails to pass over other obstacles
Solution Approach 1:
The hitting member is designed to rotate about a rotation axis, changing its hitting position dynamically between a first hitting position and a second hitting position. This dynamic adjustment allows the robot cleaner to adapt to obstacles of various shapes and sizes, overcoming the limitation of fixed trajectory hitting mechanisms while maintaining structural simplicity.
2Adaptability or versatility
If the hitting member provides a certain trajectory when hitting the floor face, then the mechanism is simple, but the robot cleaner may fail to pass over variously shaped obstacles
Solution Approach 1:
The control unit automatically controls the hitting member to rotate about the rotation axis based on sensing information from the sensor. This self-service control mechanism enables the hitting member to adapt to different obstacle shapes without requiring complex manual control or user intervention, maintaining ease of operation while achieving trajectory variety.
3Reliability
If a sensor is included to sense information related to movement restriction, then the robot can detect obstacles, but the device complexity increases
Solution Approach 1:
The sensor is designed to sense multiple types of information related to movement restriction, including but not limited to obstacle presence, wheel slip, and movement speed. This multi-functional sensor reduces the need for multiple specialized sensors, achieving reliable obstacle detection while minimizing device complexity.
Data Source
AI summary
Provided is a robot cleaner including a main body including a suction portion disposed therein, a main wheel for moving the main body, wherein a vertical level of the main wheel varies in a vertical direction with respect to the main body, an auxiliary wheel disposed at a front portion or a rear portion of the main body, wherein a vertical level of the auxiliary wheel is fixed with respect to the main body, and a driving member assembly disposed in the main body, wherein the driving member assembly varies a vertical level of the main body from a floor face while rotating in forward and rearward directions of the main body, wherein the driving member assembly has different hitting radii when rotating forward and rearward.