Rifle Trigger Mechanism With Slider Safety and Rigid Profile
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Solution Overview
Problem
Existing trigger mechanisms for sporting rifles are complex, leading to increased assembly and disassembly times, potential misalignment issues, and higher costs due to the need for multiple parts, which can result in operational errors and inefficiencies.
Innovation Solution
A trigger mechanism assembled on a fixed profile with a rigid structure that facilitates layer-by-layer assembly, incorporating a slider mechanism for piston blocking and an ellipsoidal aperture for enhanced safety catch functionality, reducing the number of parts required and eliminating the need for springs and shafts, with a single-piece trigger automatically centered by a stud.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex trigger mechanism with multiple parts is used, then the functionality is comprehensive, but the assembly and disassembly time increases
Solution Approach 1:
The trigger mechanism is divided into modular components that can be assembled and disassembled independently. The cover is segmented to allow access to internal components without disassembling the entire mechanism, and the safety catch is designed as a separate removable component. This modular segmentation enables rapid assembly and disassembly while maintaining comprehensive functionality.
Solution Approach 2:
Multiple functions are combined into integrated components. The rigid profile simultaneously serves as structural support, mounting surface for the trigger, and guide for the safety catch. The cover both protects internal components and provides a mounting surface for the trigger stud. This merging reduces the number of separate parts and simplifies assembly procedures.
2Reliability
If multiple parts are used in the trigger mechanism, then the functionality is enhanced, but the cost increases
Solution Approach 1:
The rigid profile integrates multiple structural and functional elements into a single manufactured component, eliminating the need for separate mounting brackets, guides, and support structures. The cover combines protective and mounting functions in one piece. This merging significantly reduces part count and manufacturing cost while preserving all necessary functionalities.
Solution Approach 2:
The rigid profile serves multiple purposes: structural support for the trigger mechanism, mounting surface for the trigger and safety catch, guide for the trigger stud movement, and attachment point for the cover. This multi-functionality reduces the number of specialized parts needed, lowering manufacturing costs while maintaining comprehensive functionality.
3Strength
If a complex assembly structure is used, then the trigger mechanism is robust, but the alignment precision deteriorates
Solution Approach 1:
The mechanism is segmented into components with built-in alignment features. The trigger stud has a cylindrical shape that fits into a corresponding hole in the rigid profile, providing automatic alignment. The safety catch uses a pinned connection that self-aligns during assembly. This segmentation with standardized connection features ensures precise alignment while maintaining robustness.
Solution Approach 2:
The trigger stud automatically centers itself in the rigid profile through its cylindrical geometry and the corresponding recess, eliminating the need for complex alignment procedures. The safety catch's pinned connection self-aligns during assembly. These self-aligning features ensure manufacturing precision without requiring complex assembly structures or procedures.
4Ease of manufacture
If traditional trigger mechanism design is used, then the structure is conventional, but the operational reliability decreases
Solution Approach 1:
The trigger stud is extracted from traditional complex linkages and simplified to a single cylindrical component that moves in a straight line within the rigid profile. This extraction eliminates multiple joints and connection points that could fail, improving operational reliability while maintaining manufacturing simplicity. The safety catch is similarly simplified to a single pinned component rather than a multi-part assembly.
Data Source
AI summary
A firing mechanism for a sporting rifle includes a piston, a rigid profile, a trigger and a trigger safety catch. A wall is firmly attached to the rigid profile. The trigger and safety catch are on one of the faces of said wall. A first stud is firmly attached to the trigger. A cover partially covers the trigger and safety catch. The cover includes an aperture, in the form of a slider, allowing the first stud to pass through it and for movement of the first stud along the length of the aperture. A slider is arranged over the cover. When the barrel is in the broken position, the slider will block the movement of the stud along the length of the aperture, thus immobilizing the trigger. When the barrel is in the closed position, the slider allows movement of the first stud along the aperture.