Linear Firearm Trigger Mechanism for Smooth, Repeatable Pull
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Solution Overview
Problem
Existing firearm trigger mechanisms often have uneven or rough trigger pulls, affecting the accuracy of the firearm.
Innovation Solution
A linear trigger mechanism with a trigger housing, trigger bar, sear assembly, and blocking lever, which allows for a smooth, predictable, and repeatable trigger pull by moving linearly parallel to the firearm's bore axis, incorporating a compression spring for biasing and a spring-loaded ball detent to maintain the firing pin in a ready position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional spring-loaded hammer trigger mechanism is used, then the firearm can be discharged, but the trigger pull becomes rough or uneven affecting accuracy
Solution Approach 1:
The trigger mechanism is divided into separate functional components: a linearly moving trigger body, a separate hammer assembly, and a connector mechanism. This segmentation allows each component to perform its specific function independently, with the trigger body providing smooth linear movement while the connector translates this movement to the hammer, resolving the contradiction between reliability and manufacturing precision.
Solution Approach 2:
Instead of the traditional mechanism where the trigger pivots and indirectly actuates the hammer, this invention inverts the approach by having the trigger move linearly in the opposite direction (away from the hammer) and use a connector to transfer motion. This inversion creates a smoother, more predictable trigger pull while maintaining reliable hammer actuation.
2Manufacturing precision
If a linear trigger mechanism is implemented, then trigger pull consistency is improved, but the device complexity increases
Solution Approach 1:
The connector serves as a merging element that combines the linear motion of the trigger body with the rotational motion required to actuate the hammer. This single component performs multiple functions: transferring force, converting motion types, and maintaining proper timing, thereby reducing overall complexity despite the linear trigger design.
Solution Approach 2:
The trigger body serves multiple functions: it provides the linear pulling motion for consistent trigger pull, houses the safety mechanism, and acts as the interface for finger application. This multi-functionality reduces the need for separate components, offsetting the complexity increase from the linear mechanism design.
3Manufacturing precision
If the trigger moves linearly parallel to the bore axis, then trigger pull accuracy is enhanced, but the ease of operation may be reduced
Solution Approach 1:
The connector acts as an intermediary between the linearly moving trigger body and the hammer assembly. It mediates the motion transformation, converting the linear pull into the appropriate hammer actuation motion, thereby maintaining ease of operation while achieving precise linear trigger pull movement parallel to the bore axis.
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 linear trigger mechanism provides a consistent and repeatable trigger pull, enhancing firearm accuracy and reducing the risk of accidental misfires by ensuring precise engagement with the firing pin.
Implementation Method 1
a compression spring configured to bias the blocking lever to blocking position
Implementation Method 2
a spring-loaded ball detent disposed between the sear assembly and the ejector housing, where the spring-loaded ball detent is configured to bias the sear assembly to a locking position
Data Source
AI summary
Disclosed is a linear trigger mechanism for a firearm. In certain examples, the trigger mechanism includes a trigger housing configured to couple with a fire control unit of the firearm, and a trigger slideably coupled with the trigger housing and movable along a linear path. The linear trigger mechanism also includes a trigger bar having a first end coupled with the trigger and a second end coupled with a sear activation module, where the sear activation module is moveable with respect to the fire control unit along a longitudinal path with the trigger bar, and where the sear activation module is moveable laterally with respect to the trigger bar.