Linear Trigger Mechanism for Consistent Pull and Easy Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Firearms with complex trigger mechanisms require significant disassembly for maintenance, leading to compromised reliability and safety, and uneven trigger pulls affect accuracy.
Innovation Solution
A linear trigger mechanism with a removable side plate, angled sear engagement surfaces, and a safety selector that allows for easy maintenance and consistent trigger pull, featuring a linear trigger pathway and a roller pin to transfer force to the sear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex trigger mechanism is used, then the firearm can achieve reliable firing function, but the device complexity increases and maintenance becomes difficult
Solution Approach 1:
The trigger mechanism is divided into modular components including a trigger assembly, sear assembly, and safety selector assembly, each housed in separate compartments within the trigger housing. This segmentation allows for simplified manufacturing, easier maintenance, and improved reliability while reducing overall device complexity.
Solution Approach 2:
The safety selector is extracted as a separate, independently operable component from the main trigger mechanism. This allows the safety function to be simplified and separated from the firing mechanism, reducing the complexity of the overall trigger assembly while maintaining reliable safety and firing functions.
2Reliability
If a complex trigger mechanism is used, then the firearm can achieve reliable firing function, but the ease of repair and maintenance deteriorates
Solution Approach 1:
The trigger housing is segmented into multiple accessible compartments that can be opened independently to access specific assemblies (trigger, sear, safety selector). This allows users to perform maintenance on individual components without disassembling the entire mechanism, significantly improving ease of repair while maintaining reliability.
Solution Approach 2:
The modular design with removable side plates and accessible compartments enables end-users to perform basic maintenance, cleaning, and inspection of trigger components without requiring specialized tools or expertise. This self-service capability improves ease of repair while maintaining reliable operation through regular user maintenance.
3Ease of operation
If a traditional rotational trigger is used, then the trigger mechanism can achieve firing function, but the trigger pull consistency deteriorates due to torque variations
Solution Approach 1:
Instead of using a traditional rotational trigger pull that creates varying torque around a pivot point, this invention uses a linear trigger movement where the trigger translates straight back along its axis. This inversion of the trigger motion from rotational to linear eliminates torque variations and ensures consistent trigger pull force, improving both ease of operation and manufacturing precision.
Solution Approach 2:
The rotational mechanical system is replaced with a linear translation system. The trigger moves linearly along a defined pathway rather than rotating around a pivot, substituting the rotational mechanical advantage system with a direct linear force transmission system that provides consistent trigger pull without torque variations.
4Manufacturing precision
If the trigger pathway length is increased to improve trigger pull consistency, then the trigger pull becomes more uniform, but the device complexity and size increase
Solution Approach 1:
By inverting the trigger motion from rotational to linear, the invention achieves trigger pull consistency through a short, direct linear pathway rather than requiring a long rotational arc. This inversion allows for uniform trigger pull with minimal pathway length, reducing device complexity while maintaining manufacturing precision.
Solution Approach 2:
The trigger housing provides localized guidance and constraint only where necessary along the short linear trigger pathway. The trigger guide shelf and engagement surfaces are precisely formed in the local region of trigger movement, providing the necessary precision for uniform trigger pull without requiring the entire housing to be complex or large in size.
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
Ensures predictable and repeatable trigger pulls, simplifies maintenance, and enhances firearm reliability and accuracy by minimizing torque variations.
Implementation Method 1
a roller pin captured between the angled sear engagement surface and the angled trigger engagement surface, where the roller pin is configured to transfer a force applied to the trigger by a user to the sear
Implementation Method 2
a compression spring disposed between the trigger and the trigger housing configured to return the trigger to a first position
Implementation Method 3
a sear that is at least partially disposed between the trigger housing and the removeable side plate and is configured to pivot with respect to the trigger housing
Data Source
AI summary
Disclosed is a linear trigger mechanism for a firearm. In certain examples, the trigger mechanism includes a trigger housing having a linear trigger pathway and a removeable side plate. The trigger mechanism also includes a trigger that is at least partially disposed between the trigger housing and the removeable side plate, where the trigger is configured to move between a first position and a second position along a path that is defined by the trigger pathway, and where the trigger includes an angled sear engagement surface. The trigger mechanism also includes a sear that is at least partially disposed between the trigger housing and the removeable side plate and is configured to pivot with respect to the trigger housing, where the sear includes an angled trigger engagement surface that corresponds with the angled sear engagement surface.