Vacuum Piston Fastener Driver Eliminates Air Compressor Tether
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Solution Overview
Problem
Current fastener driving apparatuses face issues such as complexity, high cost, unreliability, poor ergonomics, and safety hazards due to reliance on fuel cells, air hoses, mechanical springs, and complicated coupling mechanisms, leading to high reactionary forces, limited portability, and inefficiency.
Innovation Solution
A fastener driving apparatus powered by rechargeable batteries using a single stroke linear vacuum generator to create a vacuum, which drives a piston and anvil to drive fasteners, improving efficiency and safety by eliminating the need for air compressors and mechanical springs, and simplifying the design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a pneumatic fastener gun is used, then fastener driving speed and productivity are improved, but the device requires tethering to an air compressor and loses portability
Solution Approach 1:
The patent extracts the air compressor and air hose components from the fastening system, integrating a portable battery-powered motor directly into the fastener gun. This eliminates the need for external air supply equipment while maintaining high-speed fastener driving capability, thus resolving the contradiction between productivity and portability
Solution Approach 2:
The patent replaces the pneumatic system (air compressor and air hose) with an electric motor system powered by rechargeable batteries. This substitution maintains the high-speed actuation capability while eliminating the tethering requirement, achieving both high productivity and portability
2Ease of operation
If a fuel cell system is used, then portability is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The patent replaces the complex fuel cell combustion system with a simpler electric motor system. The electric motor directly converts electrical energy from rechargeable batteries into mechanical motion to drive the fastener, eliminating the need for fuel storage, combustion chambers, spark sources, and exhaust systems, thus maintaining portability while reducing complexity
Solution Approach 2:
The patent extracts and eliminates the fuel cell components (fuel cartridges, combustion chamber, spark source) from the system, retaining only the essential battery-powered motor and control circuitry needed for portable operation, thereby simplifying the overall system while maintaining portability
3Ease of operation
If a solenoid or mechanical spring system is used, then portability is maintained, but the fastener driving force and capability are limited
Solution Approach 1:
The patent replaces the weak solenoid or mechanical spring actuation system with a powerful electric motor system. The motor provides sustained high torque output that can generate sufficient driving force for large fasteners while maintaining portability through battery power, overcoming the force limitations of smaller portable systems
Solution Approach 2:
The patent changes the energy source parameters from weak spring potential energy or solenoid electromagnetic force to high-capacity battery electrical energy. This parameter change enables the system to deliver sustained high force output appropriate for large fasteners while remaining portable
4Force
If a flywheel mechanism is used, then fastener driving capability is improved, but the device weight and size increase
Solution Approach 1:
The patent replaces the heavy flywheel mechanical energy storage system with a lightweight battery-powered electric motor system. The motor provides direct electromagnetic torque without requiring large rotating mass for energy storage, achieving high fastener driving capability while minimizing weight and size
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 solution significantly increases efficiency by more than 50% in energy consumption per fastener driven, reduces wear, and enhances safety by eliminating high reactionary forces and jam-clearing hazards, while being portable and cost-effective.
Implementation Method 1
A fastener driving apparatus powered by rechargeable batteries using a single stroke linear vacuum generator to create a vacuum
Implementation Method 2
A fastener driving apparatus powered by rechargeable batteries using a single stroke linear vacuum generator
Data Source
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AI summary
A fastener driving apparatus includes a vacuum piston and a drive piston, which vacuum piston, when moved (by way of a motor and linear motion converter), draws a vacuum against the drive piston, which drive piston may be held in place by retention means. An anvil is coupled to the drive piston. The retention means is released electrically or mechanically at or near the point of maximum vacuum volume. This drive piston and anvil assembly is then driven by atmospheric pressure and may strike a fastener to drive it into a substrate. At least one position sensor may be used. Once the fastener is driven, the apparatus may reset to an initial position. At least one valve may be included to dump the energy stored in the vacuum in the case of a jam condition, thus providing good safety profile.