Oscillating side brush for mobile robotic vacuum
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Solution Overview
Problem
Conventional side brushes on robotic vacuums are prone to entanglement with obstructions like electrical cords due to their spinning mechanism, requiring human intervention and reducing the device's autonomy.
Innovation Solution
An oscillating side brush mechanism with a base assembly and brush assembly that includes a rotating axle, arms, a slot, anchors, and a return spring, allowing the side brush to move back and forth and push obstructions aside rather than wrapping around them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional spinning side brushes are used to extend beyond the body to reach inaccessible areas, then cleaning coverage is improved, but entanglement with obstructions increases
Solution Approach 1:
The side brush is transformed from a static spinning configuration to a dynamic oscillating configuration. The brush assembly moves back and forth along a linear path guided by a slot, allowing the brush to dynamically adapt its position and contact points while maintaining extended reach for cleaning coverage without the rotational entanglement issues.
Solution Approach 2:
Instead of rotating the side brush to achieve cleaning coverage, the invention inverts the approach by using linear oscillation. The brush moves forward and backward in a straight line rather than rotating, fundamentally changing the motion pattern to eliminate entanglement while preserving the ability to reach and clean areas beyond the main body.
2Productivity
If spinning side brushes are used to reach obstructions, then cleaning capability is improved, but autonomy is reduced due to human intervention required
Solution Approach 1:
The oscillating mechanism enables the side brush to dynamically respond to obstructions through controlled back-and-forth motion, allowing the robotic vacuum to autonomously navigate around cords and wires without human intervention, thereby maintaining both cleaning capability and autonomy.
3Productivity
If side brushes extend beyond the body to reach inaccessible areas, then cleaning effectiveness is improved, but vulnerability to obstructions increases
Solution Approach 1:
The extended side brush is equipped with a dynamic oscillating mechanism that allows it to move back and forth along a slot-guided path. This dynamic motion enables the brush to maintain extended reach for cleaning effectiveness while reducing vulnerability to obstructions by avoiding the rotational entanglement problems of conventional spinning brushes.
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
The oscillating side brush effectively prevents entanglement, allowing the robotic vacuum to operate autonomously by sweeping debris towards the main brush, enhancing its cleaning efficiency and reducing the need for human intervention.
Implementation Method 1
a return spring coupled with the first anchor and the second anchor
Implementation Method 2
a return spring coupled with the first anchor and the second anchor
Implementation Method 3
a rotating axle extending perpendicularly from the base plate, at least one arm coupled with the rotating axle, a slot along a path of the at least one arm
Data Source
AI summary
Oscillating mechanisms with side brushes are presented including: a base assembly, the base assembly including, a base plate, a rotating axle extending perpendicularly from the base plate, at least one arm coupled with the rotating axle, a slot along a path of the at least one arm, and a first anchor positioned along a proximal end of the slot; and a brush assembly slidingly coupled with the base assembly, the brush assembly including, a hub slidingly coupled with the base plate along the slot, a side brush coupled with the hub, the side brush extending outwardly from the base assembly, a second anchor positioned along the hub, and a return spring coupled with the first anchor and the second anchor. In some embodiments, mechanisms further include: at least two arms coupled with the rotating axle, the at least two arms positioned at least 90 degrees apart from each other.