Fastener-Driving Tool Self-Powered Generator
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Solution Overview
Problem
Powered fastener-driving tools, particularly those using compressed air, deplete internal power sources due to the operation of controls and indicators, leading to reduced efficiency and functionality over time.
Innovation Solution
Integration of an electrical generator within the tool's housing, utilizing moving components like pistons and fans to generate electricity, which is stored in power storage devices or used to power electrical components, thereby conserving energy and extending tool operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If internal power sources (batteries) are used to power controls and indicators, then the tool can operate electrical components, but the power sources are depleted over time requiring replacement
Solution Approach 1:
The tool generates its own electrical power through an integrated generator that converts mechanical energy from the piston assembly into electrical energy. This self-powered system eliminates the need for external battery replacements by producing electricity internally during operation, directly resolving the power depletion issue while maintaining full functionality of controls and indicators
Solution Approach 2:
The patent replaces the chemical energy storage system (batteries) with a mechanical-to-electrical energy conversion system. The generator assembly converts the mechanical motion of the piston assembly into electrical energy, substituting the depleted battery system with a regenerative power source that continuously generates electricity during tool operation
2Duration of action of moving object
If an electrical generator is integrated into the tool, then power sources are replenished and operational efficiency is extended, but the device complexity increases
Solution Approach 1:
The generator assembly is integrated directly into the existing piston assembly structure, merging the power generation function with the mechanical drive mechanism. This consolidation allows the tool to generate electricity using components that already exist in the fastener-driving system, extending operational duration without proportionally increasing overall device complexity
Solution Approach 2:
The piston assembly serves dual functions: it provides the mechanical drive for fastener insertion and simultaneously drives the generator to produce electrical energy. This multi-functionality allows the same mechanical motion to power both the fastening operation and the electrical components, reducing the need for separate power sources while extending tool operation
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 electrical generator effectively supplements and recharges internal power sources, enhancing the tool's operational efficiency and extending its usage by generating electricity through electromagnetic induction and air-powered motor assemblies, reducing the need for frequent battery replacements.
Implementation Method 1
Rotation of the fan causes the electric motor to generate electricity that is directed to the at least one power storage device and the electrical component
Implementation Method 2
Pressurized air is supplied to the housing through a pressurized air connector on the housing and contacts the fan to cause the fan to rotate
Data Source
AI summary
A fastener-driving tool including a housing having an air connector, at least one of a power storage device and an electrical component associated with the housing and an electric motor assembly associated with the housing. The electric motor assembly includes a fan where air is supplied to the housing through the air connector and moves through the housing and contacts the fan to cause the fan to rotate, rotation of the fan causing the electric motor to generate electricity that is directed to the at least one power storage device and the electrical component.