Firearm Firing Pin Roller Counterweight Friction Reduction
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Solution Overview
Problem
Existing firearm firing mechanisms, particularly in semi-automatic pistols, suffer from increased trigger weight due to asymmetric lateral arrangement of the firing pin lug, leading to tilting and increased friction, which affects shooting accuracy and reliability.
Innovation Solution
A firing mechanism with a roller positioned radially opposite to the firing pin lug, compensating for radial forces and minimizing friction, allowing for a more compact and stable design with reduced trigger weight and improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the firing pin lug is arranged asymmetrically laterally, then the firing mechanism can be compact, but the firing pin tilts in its guide increasing friction and trigger weight
Solution Approach 1:
A counterweight element is provided on the firing pin, extending radially outward from the opposite side of the firing pin lug. This counterweight creates a balancing moment that compensates for the tilting tendency caused by the asymmetric firing pin lug arrangement, thereby reducing friction and trigger weight while maintaining compact mechanism design
2Device complexity
If the firing pin is guided with sliding friction, then the structure is simple, but the friction increases trigger weight and affects shooting accuracy
Solution Approach 1:
A roller element is introduced as an intermediary between the firing pin and the guide bore. The roller reduces sliding friction by converting it to rolling friction, thereby minimizing the force required to actuate the trigger while maintaining a relatively simple guiding structure. The roller acts as a mediator that enables smooth movement without significantly increasing structural complexity
3Device complexity
If the firing pin tilts in its guide, then the asymmetric arrangement is maintained, but friction increases and trigger weight increases
Solution Approach 1:
The counterweight element on the firing pin creates a balancing moment that opposes the tilting tendency caused by the asymmetric firing pin lug arrangement. This counterbalancing action reduces the friction force between the firing pin and guide while maintaining the compact asymmetric design
4Reliability
If operating-related wear is reduced, then long-term safety is improved, but additional measures may increase device complexity
Solution Approach 1:
The roller element serves as an intermediary that significantly reduces operating-related wear by converting sliding friction to rolling friction. This wear reduction improves long-term reliability and safety of the firing mechanism. The roller is integrated into the existing structure, minimizing the increase in device complexity while achieving substantial wear reduction
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 reduces trigger weight and operating-related wear, ensuring long-term safety and enhancing shooting accuracy by minimizing friction and recoil leverage, while allowing for a uniform trigger characteristic and visual indication of weapon readiness.
Implementation Method 1
the friction occurring between the firing pin and the housing is considerably minimized
Implementation Method 2
a spring-loaded firing pin is guided in a guide
Data Source
AI summary
The invention relates to a firing mechanism for a firearm, comprising a housing in which a spring-loaded firing pin is guided in a guide, which firing pin can be held in a cocked position by means of a firing pin lug which latches on a latching tab of a latching piece and lies radially on one side of the firing pin, with the firing pin being guided in the guide via at least one roller, and wherein the roller lies on that side of the firing pin that is located radially opposite to the firing pin lug.