Multi-Function Electric Hand Tool With Interchangeable Rotary Attachments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hand tools are limited in their versatility and require separate tools for various outdoor and gardening functions, lacking a single, efficient solution for tasks like tilling, brushing, cleaning, and polishing.
Innovation Solution
A multi-function electric hand tool with interchangeable tools mounted on a rotary shaft powered by a drill head, featuring reversible action, variable speed, and torque control, made from non-corroding metals and plastics, with an adjustable shroud to protect plants and prevent material throw.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate single-use tools are used for different outdoor functions, then each tool can be optimized for its specific function, but the user needs to carry and manage multiple tools
Solution Approach 1:
The patent implements a universal power tool platform with a standardized drive shaft and mounting interface that accepts multiple interchangeable attachments. The drill head provides reversible rotation and variable speed control, while the clutch mechanism enables torque management. Users can switch between tilling blades, brushes, polishers, and other attachments by simply changing the mounted tool, eliminating the need for multiple separate power sources and reducing the number of tools to carry.
2Ease of operation
If a drill head is used to power the tool, then variable speed and torque control are provided, but the tool requires electrical power source and is less portable
Solution Approach 1:
The drill head incorporates a clutch mechanism that automatically engages and disengages the power transmission to the attachment based on load conditions. This self-regulating feature provides torque control without requiring additional electronic controls or sensors, maintaining simplicity while enabling precise control. The clutch allows the user to manage power delivery manually through lever operation, balancing control precision with mechanical simplicity.
3Adaptability or versatility
If interchangeable tools are mounted on a rotary shaft, then multiple functions can be performed with one tool, but the mounting and changing of tools requires time and effort
Solution Approach 1:
The tool system is segmented into a standardized mounting interface on the drive shaft and corresponding attachment interfaces. Each attachment (tilling blade, brush, polisher, etc.) has a standardized mounting mechanism that aligns with and secures to the drive shaft. This segmentation allows tools to be quickly swapped by simply detaching one attachment and mounting another, significantly reducing tool changing time compared to integrated or custom-fitted systems.
4Productivity
If the tool is used for tilling and gardening tasks, then productive outdoor work can be done, but plant damage and material throw are potential harmful effects
Solution Approach 1:
The patent incorporates a protective shroud or guard as an intermediary component between the tilling blades and surrounding plants. This shroud directs the flow of tilled material and contains the cutting action within a controlled zone, preventing direct contact between rotating blades and nearby vegetation. The shroud acts as a physical barrier that protects plants from damage while allowing the tilling operation to proceed efficiently.
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 tool provides a versatile, efficient, and user-friendly solution for multiple outdoor and gardening tasks, minimizing plant damage and material dispersion, while offering quiet operation and adjustable features for different user heights and tasks.
Implementation Method 1
an electrically driven rotary shaft powered by a conventional drill head providing rotation
Data Source
AI summary
A powered hand tool is adapted to use a variety of interchangeable rotary tools to assist in outdoor activities. Either of two basic tool designs can be utilized for activities including garden tilling, brushing and cleaning, auguring or post hole digging, and auto finishing and polishing. In one embodiment, an adjustable shroud is utilized along with a tiller construction to change the viewing angle of the working tiller tines to facilitate use by operators of different heights, including a kneeling position. The ability to utilize tow torque and low speed assists in avoiding accidental damage to underground wires and, if encountered, the reversibility of the drive assists in untangling the wires.