Modular Firearm Trigger Unit with Adjustable Pull Weight
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Solution Overview
Problem
Existing firearm trigger mechanisms lack a comprehensive modular system that can be easily configured to meet different user requirements, compromising reliability and safety, and are not cost-effective to manufacture in various configurations.
Innovation Solution
A modular trigger unit with a support system that includes a trigger pull weight adjustment device, safety system with a translating central safety selector, and optional set trigger device, allowing for various configurations such as simple safety without bolt locking and set trigger devices, with adjustable trigger pull weight and silent operation, compatible with both right- and left-handed firearms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional fixed trigger mechanism is used, then the structure is simple and manufacturing cost is low, but the adaptability to different user requirements is poor
Solution Approach 1:
The trigger mechanism is divided into separate functional modules: trigger guard assembly, trigger pull assembly, safety assembly, and firing pin assembly. Each module can be independently configured and assembled, allowing customization without requiring complete redesign of the entire trigger system.
Solution Approach 2:
The trigger guard assembly is designed with universal compatibility to accommodate different trigger types (standard trigger, set trigger, benchrest trigger). The same basic assembly structure can serve multiple functions by simply changing the trigger pull assembly or safety assembly components.
2Adaptability or versatility
If multiple trigger configurations are provided to meet different user needs, then the adaptability is improved, but the manufacturing cost increases
Solution Approach 1:
By segmenting the trigger system into interchangeable modules, the manufacturer can produce each module in standardized quantities, reducing per-unit costs through economies of scale. The modular design allows efficient inventory management and assembly.
Solution Approach 2:
Multiple trigger configurations are merged into a single universal trigger guard assembly that can accept different trigger pull assemblies. This consolidation reduces the total number of unique parts that need to be manufactured and inventoried.
3Ease of operation
If a modular trigger unit is implemented, then the adaptability and ease of configuration are improved, but the device complexity increases
Solution Approach 1:
The modular segmentation is designed with standardized interfaces and alignment features that guide proper assembly. Users can easily identify and assemble the correct components without requiring complex procedures or specialized knowledge.
Solution Approach 2:
The modular components are designed with self-aligning features and intuitive interfaces that allow users to configure and assemble the trigger system themselves without requiring technical assistance or complex tooling.
4Reliability
If traditional safety mechanisms are used, then the structure is simple, but the reliability and safety performance are insufficient
Solution Approach 1:
The safety function is segmented into a separate, dedicated safety assembly that works independently from the trigger pull mechanism. This separation ensures that safety functions are not compromised by trigger mechanism variations and provides redundant safety through independent component failure modes.
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 trigger unit provides enhanced reliability and safety with adjustable trigger pull weight, silent operation, and ambidextrous safety, allowing easy configuration to meet diverse user needs while being cost-effective to manufacture, compatible with both right- and left-handed firearms.
Implementation Method 1
a spring-loaded selector (9) which, when rotated, translates between a safe position and a fire position
Implementation Method 2
The drum (21) has a V-shaped configuration, in the vertex (24) of which the end of a spring-loaded safety selection rod (25) is hinged, and which ensures a sharp selection of the safety from the on safe position to the on fire position
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A trigger unit including a support adapted to be mounted on a receiver of a firearm and supporting components of a trigger mechanism and a safety system; the trigger unit is characterized in that it is modular; the support includes a plurality of seats adapted to accommodate one or more different functional components in various combinations.