Electromagnetic Piston Air Compression for Airsoft Propulsion
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Solution Overview
Problem
Existing airsoft projectile propulsion systems face issues with bulky compressed gas containers or limited shot capacity, energy inefficiency, irregular thrust due to spring properties, and noise generation, which affect accuracy and stealth.
Innovation Solution
An electromagnetic piston-based device with a cylindrical sheath, permanent magnet, and conductive wire winding, utilizing a teat-shaped piston and O-ring seals to achieve efficient air compression and controlled projectile acceleration with reduced energy consumption and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If compressed gas reservoirs are used to propel projectiles, then sufficient power is provided, but the pressurized container becomes cumbersome and bulky
Solution Approach 1:
The patent replaces the traditional mechanical spring-based compression system with an electromagnetic piston system. The electromagnetic piston uses magnetic fields generated by coils to compress air directly, eliminating the need for bulky mechanical springs and gearboxes while maintaining high compression ratios and projectile propulsion power.
Solution Approach 2:
The invention extracts and removes the cumbersome mechanical transmission components (springs, gears, linkages) from the compression system, retaining only the essential electromagnetic piston and air chamber. This extraction reduces the overall size and weight of the pressurized container while preserving the power delivery capability.
2Use of energy by moving object
If electromechanical means with springs are used, then electrical energy is utilized, but the thrust becomes uneven and energy consumption increases
Solution Approach 1:
The patent substitutes the mechanical spring thrust mechanism with an electromagnetic piston that can be precisely controlled through electrical signals. This allows for optimized energy utilization by adjusting the electromagnetic field strength and duration to match the projectile's acceleration requirements, minimizing energy losses.
Solution Approach 2:
The electromagnetic piston system enables dynamic control of the compression process, adjusting the force and duration of air compression based on real-time requirements. This dynamic adjustment optimizes energy transfer to the projectile and reduces wasted energy, unlike fixed mechanical spring systems.
3Speed
If mechanical gearboxes are used to drive the piston, then projectile acceleration is achieved, but friction increases energy consumption
Solution Approach 1:
The invention replaces the mechanical gearbox-driven piston system with a direct electromagnetic actuation system. The electromagnetic piston moves directly within the air chamber without requiring mechanical transmission through gears and linkages, eliminating friction losses while maintaining high projectile acceleration speeds.
4Power
If spring-based compression is used, then projectile propulsion is achieved, but noise and vibration are generated
Solution Approach 1:
The patent replaces the noisy and vibrating mechanical spring compression system with a silent electromagnetic piston system. The electromagnetic actuation generates no mechanical contact noise or vibration, providing projectile propulsion power while eliminating harmful noise and vibration factors.
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 provides efficient energy use, consistent acceleration, reduced noise, and improved accuracy by leveraging electromagnetic forces for projectile propulsion, enhancing the overall performance and stealth of the airsoft system.
Implementation Method 1
The mobile electromagnetic means include a piston, a permanent magnet and a winding of conductive wire
Implementation Method 2
The piston comprises at least one seal in the form of an O-ring made of an elastomer material
Implementation Method 3
Air compression means for moving the projectile from the initial position towards the end position
Data Source
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AI summary
The subject matter of the invention is a device for projecting a projectile B using compressed air, in particular provided to be built into a weapon replica, associated with an electric power source, characterised in that it includes a sheath (10) which receives electromagnetic means (12) for moving a piston (34) which is movable in said sheath (10) between a thrust nose (14), sealing the front (10‐1) of said sheath provided with a projection tube, and a breech (18) sealing the rear (10‐2) of said sheath. The invention also relates to a method for controlling said device.