Self-Loading Hand Firearm Breech Locking for Reliable Cycling
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Solution Overview
Problem
Existing self-loading handguns have complex locking mechanisms that are prone to malfunctions and are difficult to disassemble and maintain, making them unsuitable for reliable operation under challenging conditions.
Innovation Solution
A self-loading handgun with a breech locking mechanism comprising two lateral limbs and a breech face, articulated together, which is unlocked via a gas piston-driven backward movement of the slide, allowing for a simple, flat design with reduced parts and improved handling, and featuring a breech face that moves coaxially with the barrel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex locking mechanism with multiple moving parts is used, then the breech can be locked and unlocked, but the device complexity increases and the reliability decreases
Solution Approach 1:
The breech is divided into two separate parts: the breech face (1) and the breech locking mechanism (4). The breech locking mechanism includes two lateral limbs (8, 9) with retaining cams (24, 25) that engage with shoulders (26) on the frame. This segmentation allows each component to have a specific function, reducing overall complexity while maintaining reliability.
Solution Approach 2:
The invention extracts and eliminates unnecessary intermediate components from traditional locking mechanisms. The gas piston (19) directly acts on the crosspiece (13) which is connected to the breech locking mechanism, removing redundant parts and simplifying the transmission path while maintaining effective locking and unlocking functionality.
2Ease of manufacture
If traditional locking mechanisms with multiple components are used, then the breech can be secured, but the ease of manufacture and maintenance deteriorates
Solution Approach 1:
By dividing the breech into separable components (breech face and locking mechanism), the invention enables independent manufacturing and assembly of each part. The locking mechanism with its two lateral limbs and retaining cams can be manufactured separately from the breech face, simplifying production processes and facilitating maintenance.
Solution Approach 2:
Instead of using complex angular guide curves as in traditional mechanisms, the invention inverts the approach by using simple linear guiding surfaces (20) that guide the driving element (22) in a straightforward upward motion. This inversion simplifies manufacturing while achieving the same locking/unlocking function.
3Reliability
If a complex locking mechanism is used, then the breech can be locked securely, but the risk of malfunction increases
Solution Approach 1:
The invention extracts and removes unnecessary intermediate components that could potentially fail. The direct connection between the gas piston, crosspiece, and breech locking mechanism eliminates redundant parts, reducing the number of potential failure points while maintaining secure locking functionality.
Solution Approach 2:
The retaining cams (24, 25) are designed with specific geometries that provide gradual engagement with the shoulders (26) on the frame. This design cushions the locking action, distributing forces over a longer period and reducing stress concentrations that could lead to premature failure.
4Ease of operation
If traditional breech designs are used, then the locking function is achieved, but the ease of operation and handling deteriorates
Solution Approach 1:
The invention inverts the traditional approach by having the breech locking mechanism move linearly upward along simple guiding surfaces rather than rotating along complex angular curves. This inversion simplifies the structure while maintaining effective locking, improving ease of operation and handling.
Solution Approach 2:
The retaining cams engage with shoulders on the frame in a vertical dimension, while the driving element moves upward in the same vertical dimension. This alignment in the same dimension simplifies the mechanism compared to traditional designs that require movement in multiple dimensions, improving handling.
Data Source
AI summary
A self-loading hand firearm with a barrel secured to a frame, a firing pin, a slide, and a closure which is held, in the front position of the slide, in a locking position on the frame and which is moved from the locking position into a release position by gas pressure of a fired projectile. The closure is formed at least in two parts with a closure locking mechanism, which has two lateral legs, and a closure impact base lying between the legs, the closure locking mechanism being provided at the legs with at least one protruding driver element, which engages in a recess of the slide, and with at least one retaining cam, which engages in a shoulder of the frame. The closure impact base and the closure locking mechanism are hinged to one another.