Practice Weapon Adapter for Tool-Free Barrel Conversion
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Solution Overview
Problem
Conventional practice weapons experience jamming and insufficient slide movement due to weak recoil springs when using practice ammunition with minimal charge, as the standard breeches are not adequately moved by explosion gases, necessitating a conversion method that does not require tools and can be performed outside the weapon chamber.
Innovation Solution
A special adapter is used to secure a fixed barrel, allowing for the use of weakly charged ammunition by preventing forward movement during disassembly but allowing backward movement post-discharge, combined with a guide surface for easy cartridge supply, ensuring the slide's required movement without tool intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional breech is used in practice weapons, then the weapon structure remains simple, but the breech is not sufficiently moved by explosion gases from weakly charged practice ammunition, causing jamming and insufficient slide movement
Solution Approach 1:
The breech mechanism is divided into two distinct components: a practice breech for use with practice ammunition and a conventional breech for service ammunition. This segmentation allows each breech to be optimized for its specific ammunition type, resolving the contradiction by enabling reliable operation with practice ammunition while maintaining the option for simple conventional structure when using service ammunition.
Solution Approach 2:
The invention introduces a dynamic conversion mechanism that allows the breech to change its configuration based on ammunition type. The practice breech can be quickly installed or removed without tools, transforming the weapon's internal mechanics to match the requirements of the loaded ammunition, thereby achieving reliable operation with practice ammo while avoiding permanent complexity.
2Ease of operation
If the barrel is made movable to allow disassembly, then the weapon can be maintained and reassembled, but the forward movement of the barrel during disassembly interferes with the slide's required backward movement after discharge
Solution Approach 1:
The locking mechanism is segmented into a lock that remains stationary in the handle piece and a carriage that moves with the barrel. This segmentation allows the barrel to move forward for disassembly while the lock provides a fixed reference point, preventing interference with the slide's backward movement and ensuring reliable operation.
Solution Approach 2:
The carriage acts as an intermediary between the movable barrel and the stationary lock. It translates the barrel's forward movement during disassembly into a motion that does not interfere with the slide's rearward movement, thereby maintaining both ease of disassembly and reliability of slide operation.
3Reliability
If a fixed barrel is used in practice weapons, then the barrel position is stable and slide movement is reliable, but the weapon cannot be disassembled without tool intervention
Solution Approach 1:
The barrel's fixation state is made dynamic rather than static. A release mechanism allows the barrel to transition between a fixed position (for reliable operation) and a movable position (for easy disassembly). This dynamic capability resolves the contradiction by providing both stability during firing and ease of maintenance.
Solution Approach 2:
The disassembly mechanism is designed to be self-operating without requiring external tools. The user can manually activate the release mechanism to move the carriage and disengage the lock, enabling easy barrel removal while maintaining fixed barrel stability during normal operation.
4Object-affected harmful factors
If practice ammunition with minimal charge is used, then the weapon can be safely handled and visually distinguished, but the explosion gases are insufficient to move the conventional breech, causing jamming
Solution Approach 1:
The practice breech is specifically designed with local quality modifications tailored to practice ammunition characteristics. The breech face geometry, extractor design, and recoil spring tension are locally optimized to be adequately moved by the minimal charge of practice ammunition, resolving the contradiction between safety and reliability.
Solution Approach 2:
The invention changes key parameters of the breech mechanism to match practice ammunition properties. The recoil spring tension is reduced, the breech face angle is modified, and the mass of moving parts is adjusted, allowing the weak explosion gases from practice ammunition to reliably cycle the breech without causing harmful recoil or misfires.
Data Source
AI summary
A practice weapon, having a conventional handle piece with a lock for a drop barrel, with a trigger mechanism which optionally has a rotary bearing for a rotatable trigger, with a spring base on which the return spring is supported; and with a practice breech with a fixed practice barrel. In order to permit a conversion without the use of a tool, an adapter is inserted into the handle piece, the adapter being supported firstly above the trigger mechanism, optionally above the rotary bearing, on a brace and secondly in the upper region of the spring base of the handle piece. Furthermore, the upper region of the adapter has guides for the practice barrel, and the lock interacts with a locking carriage, which is formed in a locking slot of the adapter, in such a manner that the locking carriage secures the practice barrel.