Cartridge Magazine Follower With Movable Rear Guide
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Solution Overview
Problem
Existing cartridge magazines for portable firearms, especially self-loading rifles, face challenges in managing high-capacity magazines that provide both high firepower and manageable design, with issues such as breech mechanism catching and slide catch lever release, particularly during cleaning and tough use, and existing solutions do not adequately address these problems.
Innovation Solution
A feeder design for the cartridge magazine with a movable rear guide part that includes a rigid and movable support surface, allowing for geometrically distributed support and additional functions like a trigger, enabling reliable breech mechanism capture and release, while minimizing frictional forces and maintaining operational safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a high-capacity magazine is designed to provide high firepower, then the quantity of cartridges stored increases, but the magazine becomes more difficult to manage and clean
Solution Approach 1:
The magazine is divided into multiple compartments or sections, each with its own follower mechanism. This segmentation allows for easier cleaning and maintenance of individual sections while maintaining high overall capacity, directly addressing the contradiction between quantity and ease of operation
Solution Approach 2:
The follower is designed with movable and rigid parts that can adapt their configuration during operation and cleaning. The movable rear guide part allows the magazine to transition between operational and maintenance states, making high-capacity magazines easier to manage
2Reliability
If the breech mechanism is designed to securely catch cartridges, then reliability of cartridge capture improves, but frictional forces increase during operation
Solution Approach 1:
The geometry of the breech mechanism and follower surfaces is optimized to change contact parameters during operation. The movable rear guide part adjusts surface contact characteristics to maintain secure capture while minimizing friction, resolving the contradiction between reliability and harmful frictional forces
3Reliability
If the feeder is designed with multiple support surfaces for geometrically distributed support, then functional reliability and cartridge guidance improve, but device complexity increases
Solution Approach 1:
The movable rear guide part serves multiple functions: it provides geometrically distributed support surfaces for reliable cartridge guidance, acts as a trigger mechanism, and enables breech mechanism capture. This multi-functionality achieves high reliability without proportionally increasing device complexity
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 feeder design enhances the functional reliability of the cartridge magazine by ensuring secure cartridge guidance and breech mechanism capture, even under high-frequency vibrations, and extends the service life of the magazine, while maintaining manageable size and weight.
Implementation Method 1
a compression spring, wherein the compression spring is arranged between the outer feeder and the inner feeder
Implementation Method 2
arranged in the interior of the cartridge magazine against a spring force of a main spring in the direction of the bottom side of the housing
Data Source
AI summary
A feeder for a cartridge magazine for a portable firearm includes: a first cartridge supporting surface at an upper region; a second cartridge supporting surface, the first cartridge supporting surface and the second cartridge supporting surface being arranged in a third spatial direction spaced at a distance from one another in such a way that a cartridge for the portable firearm is movable along the feeder in a direction of a front region; a front guide part including a front support surface; and a rear guide part including a rear support surface, a rigid part, and a movable part, the rear support surface including a first support surface and a second support surface, the first support surface being on the rigid part, the second support surface being on the movable part.