Spherical Robotic Vacuum Using Housing as Wheel and Gravity Steering
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Solution Overview
Problem
Existing robotic vacuum designs require significant maintenance and often need user intervention to overcome physical obstacles, increasing maintenance time and effort.
Innovation Solution
A spherical robotic vacuum design with a perforated casing that uses adjustments to its center of gravity, either via a pendulum or weight and rod system, to steer and vacuum debris without additional mechanical parts, reducing the need for maintenance and user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional robotic vacuum designs are used with separate wheels and mechanical components, then the device can move and vacuum, but the number of mechanical parts increases leading to more maintenance requirements
Solution Approach 1:
The patent merges the wheel function with the device housing itself. The spherical casing acts as both the structural housing and the rolling element, eliminating separate wheels and associated mechanical components. This integration directly reduces the number of parts that require maintenance while preserving mobility functionality.
Solution Approach 2:
The spherical housing serves multiple functions simultaneously: it provides structural containment, enables rolling motion, and facilitates navigation. By making the housing multi-functional, the patent eliminates the need for dedicated wheel components and reduces overall device complexity.
2Extent of automation
If traditional robotic vacuum designs are used with fixed center of gravity, then the structure is simple, but the device cannot overcome physical obstacles autonomously
Solution Approach 1:
The patent implements a dynamic center of gravity system using a pendulum mechanism that can shift weight distribution within the spherical housing. This dynamic adjustment allows the robot to autonomously respond to and overcome physical obstacles by repositioning its center of gravity, transforming a static structure into an adaptive system.
Solution Approach 2:
The pendulum-based center of gravity adjustment system enables the device to autonomously navigate obstacles without external user intervention. The mechanism self-regulates by shifting weight in response to terrain variations, providing automated obstacle overcoming capability.
3Ease of operation
If additional mechanical parts are added for steering and movement control, then the device can navigate better, but maintenance time and effort increase
Solution Approach 1:
The patent combines steering control with the center of gravity adjustment mechanism. The same pendulum system that shifts weight for obstacle overcoming also provides steering functionality by asymmetrically positioning weight. This merging of functions eliminates separate steering mechanisms and reduces maintenance requirements.
Solution Approach 2:
The center of gravity adjustment mechanism serves dual purposes: it provides both steering control and obstacle overcoming capability. This multi-functionality reduces the number of separate mechanical systems needed, thereby decreasing maintenance time and effort.
4Speed
If more electrical energy is used for driving mechanisms, then the device can move more effectively, but less energy is available for the main vacuuming function
Solution Approach 1:
The patent replaces active mechanical driving mechanisms with passive gravitational motion. The spherical device rolls by shifting its center of gravity, utilizing gravitational force rather than motor-driven wheels. This substitution dramatically reduces electrical energy consumption for movement, leaving more energy available for the vacuuming function.
Solution Approach 2:
The device exploits gravitational potential energy by continuously shifting its center of gravity to create rolling motion. This approach uses the environment's gravitational field rather than consuming electrical energy for propulsion, optimizing energy allocation for vacuuming.
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 design minimizes maintenance requirements and enables the robotic vacuum to navigate obstacles autonomously, reducing energy consumption and enhancing vacuuming efficiency by utilizing the device's housing as the primary movement mechanism.
Implementation Method 1
Turning left and right is controlled by adjusting the center of gravity inside the sphere. In one embodiment, a pendulum is adjusted to change the center of gravity and control turning.
Implementation Method 2
The housing of the device serves as the wheel on which the device rolls in order to move about the work environment.
Implementation Method 3
The housing is perforated to allow debris on the work surface to be vacuumed into the device.
Data Source
AI summary
A spherical or ovoid design for a robotic vacuum in which the housing of the vacuum also serves as the means by which the device moves. Steering of the device is controlled by adjusting the center of gravity within the housing. Perforations in the housing allow debris to be vacuumed into the device.