Modular Linear Striker for Light Trigger Pull
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Solution Overview
Problem
Double action trigger mechanisms with striker assemblies in firearms require longer trigger travel and heavier pull weight for each shot, which can be tiring and may not need an external mechanical safety, but lack the automatic cocking mechanism of single action systems.
Innovation Solution
A modular linear striker mechanism with an elongated firing pin, axial spring, and housing, featuring a slider mechanism that allows preloading and a reset spring to limit the firing pin's forward movement, enabling efficient and short trigger pull with consistent performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a double action trigger mechanism with striker assembly is used, then the firearm can operate without an external mechanical safety, but the trigger travel becomes longer and pull weight becomes heavier
Solution Approach 1:
The trigger mechanism is divided into separate functional modules: a trigger assembly that controls release and a separate striker assembly that performs the firing function. This segmentation allows the trigger to have a shorter, lighter pull while the striker handles the safety and firing sequence, resolving the contradiction between safety reliability and ease of operation.
Solution Approach 2:
The striker assembly acts as an intermediary between the trigger and the firing pin. The trigger releases the striker, which then moves forward to strike the firing pin. This intermediary mechanism enables the trigger to have reduced travel and pull weight while still providing safe operation through the striker's controlled release sequence.
2Ease of operation
If a single action trigger mechanism with striker assembly is used, then the trigger has short travel and light pull weight, but an external mechanical safety is required
Solution Approach 1:
The safety function is merged into the striker assembly itself rather than requiring a separate external safety mechanism. The striker's design incorporates automatic safety features that prevent accidental discharge while maintaining the short travel and light pull weight characteristics of single-action triggers, thus combining safety reliability with ease of operation.
3Ease of operation
If a modular linear striker mechanism is used, then the trigger pull becomes consistent and light with reduced travel distance, but the device complexity increases
Solution Approach 1:
The mechanism is segmented into standardized modular components (trigger assembly, striker assembly, housing) that can be manufactured separately and assembled. This segmentation reduces overall complexity by allowing each module to be optimized independently while maintaining consistent, light trigger pull through precise modular interfaces and alignment features.
Solution Approach 2:
The modular striker assembly is designed with universal features that can be adapted to different firearm models including pistols and rifles. This universality reduces complexity by using standardized components across multiple applications rather than designing unique mechanisms for each firearm type, while still achieving consistent trigger pull characteristics.
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 modular design provides a consistent and light trigger pull with reduced travel distance, enhancing the responsiveness and reducing the weight of the firearm, while allowing incorporation into various firearm models, including pistols and rifles.
Implementation Method 1
The axial spring produces the force which propels the firing pin toward the primer in the cartridge
Implementation Method 2
the firing pin is also biased back from the front face of the housing by a reset spring
Data Source
AI summary
A modular linear striker has a firing pin assembly, an axial spring and a housing. The firing pin assembly includes a firing pin and a reset spring and may also include a separate slider. The firing pin has a resting position, a cocked position and a firing position. The reset spring biases the firing pin back in its resting position. When the slider is incorporated into the firing pin assembly, the axial spring biases the slider forward with a preloaded force. The housing surrounds the firing pin assembly and the axial spring. The housing has a notched section between its front face and its body section which fits within a setting in the firearm frame. The notched section engages the fitting in the firearm frame so that the modular linear striker is arranged in the proper position and orientation within the frame.