Rifle Carriage Assembly Axial Stroke and Jamming
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Solution Overview
Problem
Existing rifles with hammer devices and striker-fired mechanisms often have complex interactions between the carriage assembly and the bullet, leading to reduced axial strokes and potential jamming issues during rearming operations.
Innovation Solution
A rifle design featuring a trigger group with a hammer device and a carriage assembly that allows for greater axial strokes, simplifying the interaction between the carriage assembly and the bullet, and enabling easier rearming operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hammer device trigger group is used, then reliability is improved, but device complexity increases due to complex interactions between carriage assembly and bullet
Solution Approach 1:
The patent extracts the complex interaction mechanisms between the carriage assembly and bullet from the system. By redesigning the carriage assembly to have simplified movement paths and removing unnecessary interaction points, the patent maintains the reliability benefits of the hammer device while eliminating the complexity caused by complex carriage-bullet interactions during rearming operations.
2Ease of operation
If carriage assembly axial stroke is reduced, then ease of operation is improved, but reliability deteriorates due to potential jamming issues during rearming
Solution Approach 1:
The patent applies dynamics by allowing the carriage assembly to have variable axial stroke characteristics. During normal operation, the axial stroke remains reduced for ease of operation. During rearming operations, the design allows for increased axial movement to prevent jamming. This dynamic adaptation resolves the contradiction between ease of operation and reliability.
3Reliability
If carriage assembly axial stroke is increased, then reliability is improved by reducing jamming risk, but device complexity increases due to complex interaction operations
Solution Approach 1:
The patent segments the carriage assembly into distinct functional components with simplified individual movements. By dividing the overall carriage assembly into modular sections, each performing a specific function with simple axial movement, the patent achieves increased axial stroke for reliability while avoiding the complexity of complex interaction operations between multiple moving parts.
Data Source
Figure 1a~1b
Figure 1a'~1b'
Figure 2
AI summary
The invention is a rifle (1) comprising a fixed main body (2), comprising a barrel (4), a receiver (6) comprising an upper opening (60), and a breech element (8). The rifle (1) further comprises a trigger group (10) at least partially housed in the receiver (6), comprising a trigger (100), a hammer device (110) operable by the trigger (100) and a safety member (120) positionable in a shooting position, in which it is disengaged from the hammer device (110) and in a safety position, in which it engages the hammer device (110), blocking it. In addition, the rifle (1) further comprises a carriage assembly (3) comprising a shutter group (5), positioned on the receiver (6) at the upper opening (60) and axially movable by the user between an advanced shooting configuration and a retracted rearming configuration, and vice versa. Said carriage assembly (3) comprises a safety group (7) commandable by the user, with the carriage assembly (3) in the advanced configuration, in a ready-to-shoot configuration, in which it is disengaged from the safety member (120), and a safety configuration, in which it engages and keeps the safety member (120) in the safety position.