Semi-Automatic Rifle With Pivoting Receiver Cover
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Solution Overview
Problem
Current semi-automatic rifles lack the military ruggedness and appearance while being restricted to semi-automatic mode, which limits their functionality compared to fully-automatic machine guns.
Innovation Solution
A semi-automatic rifle designed with features typical of light machine guns, including a pivoting receiver cover, belt-fed ammunition capability, and a spring system for the hammer to strike the firing pin, with a trigger assembly that includes a sear and disconnector for controlled firing, and a charging handle for seating rounds, mimicking the operation of military machine guns but in a semi-automatic configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If semi-automatic rifles use traditional hunting rifle designs, then they meet ownership requirements for semi-automatic mode, but they lack military ruggedness and appearance
Solution Approach 1:
The rifle receiver is designed with a universal ammunition feeding system that can accept both belt-fed ammunition and magazine-fed ammunition without modification. The receiver includes a magazine well for magazine insertion and a ramp mechanism that can handle both belt and magazine ammunition types, allowing the same firearm to serve multiple operational roles while maintaining semi-automatic operation only
2Adaptability or versatility
If the rifle accepts belt-fed ammunition, then it achieves military-grade functionality, but it requires a complex loading mechanism with pivoting receiver cover
Solution Approach 1:
The receiver cover is designed to pivot between open and closed positions rather than being fixed. This dynamic element allows the cover to move out of the way during belt loading operations and return to its protective position during normal operation, providing the necessary functionality while maintaining a streamlined appearance when not in use
3Ease of operation
If the trigger assembly includes sear and disconnector mechanisms, then it provides controlled firing with tactile feedback, but it increases the complexity of the trigger housing
Solution Approach 1:
The trigger assembly incorporates a disconnector mechanism that provides tactile and audible feedback to the operator. When the trigger is released, the disconnector pivots the sear to catch the hammer, creating a noticeable click that confirms the weapon is ready to fire again. This feedback mechanism ensures the operator knows the firing cycle is complete and the weapon is safe to operate, improving ease of operation through clear operational confirmation
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 rifle achieves a military-grade appearance and functionality in a semi-automatic mode, allowing for efficient loading and firing of ammunition from both belts and magazines without modification, providing a tactile and audible feedback for the user on trigger release, enhancing user experience and operational efficiency.
Implementation Method 1
a spring system for urging the hammer to move forward in the receiver to strike the firing pin
Data Source
AI summary
A semi-automatic rifle is configured to fire single rounds of ammunition via a magazine or a belt of ammunition. A receiver cover pivots open to receive the first round of a belt of ammunition or a magazine can be inserted in a magazine well. The rifle operates using a closed bolt firing cycle, with a sliding hammer that, on its return from recoil after firing a first round, is caught by a sear regardless of whether the trigger is still in the pulled position. The trigger must be fully released before a second round can be fired.