Magnetic Sear Trigger Mechanism for Dry-Fire Training
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional firearms used for dry-fire training lack the ability to replicate the realistic trigger feel and automatic sear reset of live-fire firearms, requiring additional energy and mechanical complexity, which complicates training and introduces friction contact points.
Innovation Solution
A magnetically actuated sear mechanism using a permanent magnet and a magnet catch, aligned parallel to each other, with a fulcrum and trigger engagement device, allowing for a crisp trigger break and automatic reset without additional energy, designed to fit within the firearm's compact spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional mechanical sear mechanism is used for dry-fire training, then the trigger mechanism can be cycled, but it requires additional energy input and introduces friction contact points that reduce reliability
Solution Approach 1:
The patent replaces the conventional mechanical spring-based sear mechanism with a magnetic field-based system. A permanent magnet interacts with a magnet catch to hold the trigger in the engaged position, eliminating the need for mechanical springs and reducing friction contact points. This substitution reduces energy requirements and improves reliability for dry-fire training.
Solution Approach 2:
The patent changes the physical state and properties of the trigger mechanism by introducing magnetic field interactions. The permanent magnet creates a magnetic field that exerts force on the magnet catch, changing the operational parameters from purely mechanical contact forces to magnetic field forces, thereby reducing friction and energy consumption.
2Reliability
If a magnetic sear mechanism is implemented, then friction contact points are eliminated and reliability is improved, but the device complexity increases due to additional magnetic components
Solution Approach 1:
The patent extracts the friction-generating mechanical spring components from the trigger mechanism and replaces them with a permanent magnet and magnet catch system. By removing the complex spring assembly and replacing it with simpler magnetic components, the overall device complexity is actually reduced while maintaining or improving reliability.
Solution Approach 2:
The permanent magnet in the magnetic sear mechanism is a stationary component that generates a persistent magnetic field without requiring external energy input or complex control systems. The magnetic field automatically engages and disengages the magnet catch based on trigger position, making the system self-regulating and reducing the need for additional control components.
3Ease of operation
If the magnet and magnet catch are positioned to provide strong magnetic engagement, then the trigger break is crisp and realistic, but the magnetic components occupy more space within the firearm
Solution Approach 1:
The patent optimizes the spatial arrangement of the magnet and magnet catch by positioning them in specific orientations and dimensions within the trigger mechanism. The magnet is positioned to create a focused magnetic field that engages the magnet catch at a specific point, maximizing the magnetic engagement strength while minimizing the overall volume occupied by the magnetic components through strategic dimensional placement.
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 magnetic sear provides a realistic trigger break and automatic reset, reducing mechanical travel and energy requirements, while being compact, reliable, and easy to install, eliminating friction contact points and simplifying manufacturing.
Implementation Method 1
The magnet comprises a permanent magnet. The magnet may be a stationary magnet. The magnet may include a rare earth Neodymium magnet. The magnet catch includes a ferromagnetic material, iron, an alloy or other similar material.
Implementation Method 2
The magnet catch includes a ferromagnetic material, iron, an alloy or other similar material.
Data Source
AI summary
A magnetically actuated sear for simulated firearm training is disclosed. The magnetically actuated sear includes a magnet and a magnet catch. The magnetically actuated sear facilitates a crisp trigger break thereby replicating the actual sear release of a firearm. The application of a suitable external trigger force causes the magnet catch to travel along the fulcrum away from the magnet. The greater the difference between the holding force when the magnet is in direct contact with the magnet catch and the attraction force between the magnet and the magnet catch, the crisper the magnetically actuated sear will feel. The magnetically actuated sear can be designed so that slack or trigger creep of the magnetically actuated sear can be matched to the actual firearm's slack or trigger creep.