SENIOR INDUSTRIAL DESIGNER

PROBO 3

Where Design Meets Clean.

Rebalanced Ergonomics for One-Handed Overhead Cleaning

An electrostatic disinfectant-enabled hygiene system for the post-COVID home

Industrial Design | Consumer Appliances | Ergonomics | Product Architecture | 2021

Context / Brief

The COVID-19 pandemic reshaped how users perceive cleanliness, shifting the focus from visible dirt removal to complete surface-level disinfection. While handheld and stick vacuum cleaners address dust and debris, they remain ergonomically compromised during overhead use and functionally limited when it comes to comprehensive sanitization.

This project explores how a next-generation handheld vacuum can be re-engineered to address both:

The biomechanical inefficiency of front-heavy overhead cleaning, and
The growing need for advanced surface disinfection in everyday environments.

Problem Statement (Ergonomic Core)

Conventional handheld and stick vacuum cleaners are designed with their primary mass positioned forward of the user’s grip. While this configuration works for floor-level cleaning, it becomes a significant ergonomic drawback during overhead tasks such as cleaning ceilings, fans, light fixtures, and high surfaces.

With the extension pole attached, the center of mass shifts further away from the wrist and shoulder axis, generating high rotational torque. This results in:

Rapid arm and shoulder fatigue
Loss of one-handed control
Compensatory two-handed use
Reduced precision and stability

In such conditions, the fundamental promise of a “handheld” device effortless, single-handed maneuverability is compromised.

Probo 3 is a handheld battery powered Vacuum Cleaner that has 3 ideal modes for cleaning your house, A user-centric design approach to reduce fatigue and acquiring more stability. It also has a robotic unit attachment which allows the user to take a day off and let it do the job. Yet one of the main features of the device is the inbuilt electrostatic disinfectant sprayer, which enables the user to disinfect any contaminated surface with ease. Making it an ideal product for home hygiene.

Core Concept: Lever-Locked Mass Architecture

Instead of suspending the suction and motor mass forward of the hand, the design repositions the canister closer to the user’s forearm. When the device is lifted overhead, the arm and product form a unified lever system, allowing the forearm to absorb and counterbalance the load.

This configuration:

Reduces the moment arm acting on the wrist
Transfers load closer to the shoulder’s natural support axis
“Locks” the device against the forearm for rotational stability
Enables controlled, precise motion with minimal muscular compensation

The result is a handheld tool that behaves not as a hanging weight, but as a structurally supported extension of the arm.

Final Design

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