Hand-Held Surface Prep Motor Positioning
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Solution Overview
Problem
Existing hand-held surface preparation tools are unbalanced, limiting their maneuverability and effectiveness on non-flat surfaces, and lack a means to efficiently manage debris, leading to user fatigue and safety concerns.
Innovation Solution
A hand-held apparatus with a motor positioned directly above a task-specific roller, equipped with a vacuum-capable handle and adjustable debris guards, allowing for balanced operation on varied surfaces and effective debris management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor is located to the rear or side of the device, then the device can be compact, but the device becomes unbalanced causing arm and side torque for the user
Solution Approach 1:
The motor is repositioned from the traditional rear or side location to a position directly above the contact surface, changing the spatial dimension of motor placement. This vertical alignment creates a balanced configuration where the motor's weight counteracts the weight of the contact surface, eliminating arm and side torque while maintaining device compactness.
2Ease of operation
If the motor is positioned to provide balanced operation, then user comfort improves, but the device complexity increases
Solution Approach 1:
The motor housing serves multiple functions: it contains the motor, provides structural support, and acts as a counterweight to balance the device. This multi-functionality achieves balanced operation for user comfort without significantly increasing device complexity, as the same structural components fulfill multiple roles.
3Device complexity
If traditional hand-held tools are used, then the device structure is simple, but the tools cannot properly contour to rounded or uneven surface shapes
Solution Approach 1:
The contact surface is designed with a curved or contoured shape that matches the curvature of rounded or uneven surfaces. This curvature allows the tool to properly conform to various surface geometries while maintaining simple motor and structural components, achieving adaptability without excessive complexity.
4Device complexity
If no vacuum attachment is provided, then the device structure remains simple, but debris management becomes problematic
Solution Approach 1:
A vacuum attachment is added as an intermediary component to the device. This attachment includes a vacuum port connected to the motor housing, allowing debris to be suctioned away during operation. The vacuum system acts as a mediator between the grinding process and debris disposal, managing harmful factors while adding minimal complexity to the overall device structure.
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 apparatus provides improved balance and maneuverability on flat and uneven surfaces, reducing user fatigue and enhancing safety by maintaining consistent contact and efficiently removing debris through the vacuum system.
Implementation Method 1
a vacuum capable handle connected thereto
Data Source
AI summary
A hand-held surface preparation apparatus comprising a frame, a hollow semi-circular shaped housing member connected to said frame, a drive housing connected to said housing member, a motor secured to said drive housing aligned directly over said hollow semi-circular shaped housing member, a roller rotatably positioned inside of the semi-circular shaped housing member in communication with said motor, front and rear guide handles extending from said frame, and removably connected front and rear debris guards.