Firearm Trigger Mechanism Linear Guidance Friction Reduction
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Solution Overview
Problem
Existing firearm trigger devices with spring-loaded firing pins are prone to mechanical complexity, increased fault susceptibility, and inaccurate shot release due to excessive moving parts and misaligned locking mechanisms, which can lead to unintentional discharges.
Innovation Solution
A trigger device featuring a linearly guided locking rod with a ball-bearing roller and adjustable latching overlap, allowing precise control over the trigger pressure point and reducing friction, thereby enhancing accuracy and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a carriage structure with multiple moving parts is used for the catching piece, then the catching piece can be displaced between positions, but the device complexity increases and reliability decreases
Solution Approach 1:
The patent combines the catching piece with the trigger into a single integrated component that moves together as one unit. This merging eliminates the need for separate carriage structures and multiple intermediate moving parts, thereby reducing device complexity while maintaining the displacement capability between cocked and safety positions.
Solution Approach 2:
The trigger assembly serves multiple functions: it acts as both the triggering mechanism and the catching piece that engages with the firing pin. This multi-functionality reduces the number of dedicated components needed, simplifying the overall device structure while enabling position displacement for safety and cocking operations.
2Adaptability or versatility
If the catching piece moves relative to the trigger during displacement, then the catching piece can transition between positions, but the shot release accuracy deteriorates and unintentional discharge risk increases
Solution Approach 1:
By merging the catching piece and trigger into a single rigid unit, the invention ensures that they move together without relative displacement. This eliminates the accuracy deterioration and unintentional discharge risks associated with relative movement, while the entire assembly can still transition between cocked and safety positions through the firing pin's movement.
Solution Approach 2:
The trigger assembly is pre-positioned and rigidly connected to the catching piece, establishing a fixed geometric relationship before operation. This preliminary configuration ensures that the shot release point remains accurate and predictable, preventing unintentional discharges caused by relative movement during the firing sequence.
3Ease of operation
If a pivoted lever intermediate element is used, then the catching piece can slide during movement, but the firing point definition accuracy deteriorates
Solution Approach 1:
The invention eliminates the pivoted lever intermediate element by merging the trigger and catching piece into one unit. This removal of the intermediate sliding mechanism prevents the deterioration of firing point accuracy, as there is no separate component introducing relative movement or positional uncertainty during the triggering action.
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 a simple, reliable, and precise trigger mechanism that ensures accurate shot definition and reduced effort in transitioning between safety and firing positions, minimizing the risk of unintentional discharges.
Implementation Method 1
the catching piece slides over an intermediate roller on the intermediate element... if the roller has ball bearings in order to further reduce friction
Data Source
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AI summary
The invention relates to a trigger mechanism (2) for a firearm, comprising a spring-loaded firing pin (1) which, when in the cocked position, engages on a catch (8). The catch (8) can be released at a right angle to the direction of the firing pin to fire and can be displaced between the cocked position and a safety position uncocking the firing pin spring (5) along the direction of the firing pin to lock the firearm. The catch (8) slides on an intermediate member (10) when displaced, said member being mobile in the direction of release of the catch (8) and engaging on a click-stop edge (13) of a trigger (15) which click-stop edge can be disengaged to fire.