Robotic Vacuum Side Arm Retraction for Obstacle Clearance
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Solution Overview
Problem
Robotic vacuum cleaners with side arms struggle to effectively navigate and retract during collisions with obstacles, especially when the side arm strikes an obstacle from the rear during rotational movement, leading to incomplete cleaning and potential operational halt.
Innovation Solution
A robotic vacuum cleaner design featuring a pivotable and linearly displaceable side arm mounted on a rotary shaft with an elongate hole, utilizing a spring mechanism for inward pivoting into the housing upon contact, and a guide mechanism to ensure smooth retraction, allowing the side arm to avoid obstacles during both forward and rotational movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the side arm is extended to reach deeper portions of corners, then the cleaning capability is improved, but the risk of brush filaments entering drive wheels increases and collision avoidance becomes more difficult
Solution Approach 1:
The side arm is made dynamically adjustable in length through a telescopic mechanism with multiple segments that can extend and retract. This allows the side arm to adapt its length based on operational needs, extending to reach deep corners when necessary and retracting to avoid collisions and prevent brush filaments from entering drive wheels.
Solution Approach 2:
The length parameter of the side arm is made variable rather than fixed. The telescopic mechanism enables continuous adjustment of the side arm length, allowing the system to optimize between cleaning effectiveness and collision avoidance by changing the extended length parameter as needed.
2Productivity
If the side arm is made longer to reach deeper corners, then the cleaning result is improved, but the frequency of collisions with obstacles increases
Solution Approach 1:
The telescopic side arm mechanism allows dynamic adjustment of arm length during operation. When approaching obstacles or during rotational movements, the side arm can be retracted to prevent collisions, while extending when needed for deep corner cleaning, thus resolving the contradiction between reaching capability and collision frequency.
3Productivity
If the side arm is fixed in the outward position, then the cleaning of border regions is effective, but the robotic vacuum cleaner cannot continue rotational movement when the side arm strikes an obstacle
Solution Approach 1:
The side arm's telescopic mechanism enables it to dynamically adjust its position during rotational movements. When an obstacle is detected or contact is made, the side arm can retract into the housing, allowing the robotic vacuum cleaner to continue its rotational movement without interruption, while still maintaining effective cleaning capability when the path is clear.
4Manufacturing precision
If the side arm is made motor-driven for precise control, then the positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The telescopic side arm mechanism is designed to be automatically controllable through sensors and control systems that detect obstacles and cleaning needs. The system serves itself by automatically extending and retracting the side arm based on environmental feedback, achieving precise positioning control without requiring complex manual intervention mechanisms.
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 the robotic vacuum cleaner to effectively avoid collisions by retracting the side arm into the housing, maintaining cleaning efficiency and preventing operational halts, even when encountering obstacles during rotational directions.
Implementation Method 1
The side arm is inwardly pivotable into the inside of a housing of the robotic vacuum cleaner by a spring mechanism in the event of contact with an obstacle
Data Source
AI summary
A robotic vacuum cleaner includes a movable side arm. The side arm is inwardly pivotable into the inside of a housing of the robotic vacuum cleaner by a spring mechanism in the event of contact with an obstacle. The side arm is mounted on a rotary shaft so as to be pivotable and linearly displaceable along an elongate hole.