Fire Control Hammer Spring Centering Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fire control mechanisms in firearms lack reliability and longevity, often experiencing premature failure due to undesirable geometries and stresses caused by the interaction between hammer springs and frames.
Innovation Solution
A fire control mechanism design featuring a hammer spring with legs and coils that engage flanges with hooks or bends, maintaining centering on the hammer axis and reducing movement relative to the frame, thereby enhancing reliability and extending service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hammer spring designs are used, then the structure is simple, but reliability and longevity are poor due to premature failure from undesirable geometries and stresses
Solution Approach 1:
The hammer spring is divided into multiple legs (first leg, second leg, third leg, fourth leg) with distinct functions. Each leg engages with specific features on the hammer and frame, distributing stresses and improving reliability through functional segmentation of the spring structure.
Solution Approach 2:
Different portions of the hammer spring have different geometric properties optimized for their specific functions. The legs have varying orientations and engagement points, with each section designed to handle specific stress patterns, creating local quality variations that enhance overall reliability.
2Reliability
If hammer spring contacts frame flange at multiple points, then reliability improves, but movement relative to frame increases
Solution Approach 1:
The hammer spring features asymmetric leg configurations with specific orientations. The first and second legs engage with the hammer, while the third and fourth legs engage with the frame at different locations and angles, creating an asymmetric structure that maintains stability through distributed contact points.
Solution Approach 2:
The hammer spring contacts the frame flange at multiple spatial locations and orientations, utilizing three-dimensional positioning rather than simple linear contact. This multi-dimensional engagement distributes forces and maintains positional stability while improving operational reliability.
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 design increases the reliability and longevity of the hammer spring by maintaining its centering on the hammer axis, reducing premature failure and stress, and allowing for smooth operation and extended service life.
Implementation Method 1
A hammer spring is arranged to bias the hammer about the hammer axis
Implementation Method 2
The hammer spring comprises a leg comprising a bend
Data Source
AI summary
In some embodiments, a fire control mechanism comprises a frame comprising a flange comprising a peak. A hammer is arranged to pivot about a hammer axis. A hammer spring is arranged to bias the hammer about the hammer axis. The hammer spring contacts the peak of the flange.