Rotating Hammer Firearm Mechanism Preventing Drop Discharge
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Solution Overview
Problem
Firearms with hammer-operated firing pins face issues of accidental discharge when dropped, due to mechanical instability and potential for mechanical failure.
Innovation Solution
A semi-automatic handgun with a rotating hammer system, where the hammer is hingedly connected to the slide and features a rotation axis perpendicular to the longitudinal direction, utilizing elastic means and a retention member for secure positioning, and a cam mechanism for precise firing pin alignment, reducing mechanical stress and external contact risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hammer-operated firing pin system is used, then the firing mechanism can be activated, but accidental discharge occurs when the weapon is dropped due to mechanical instability
Solution Approach 1:
The hammer is designed to rotate about a transverse axis rather than move linearly, creating a dynamic system where the hammer's position is controlled by rotation angle. This rotational mechanism with defined stop positions (cocked and firing positions) provides inherent stability against gravitational forces that would otherwise cause accidental discharge in linear hammer systems.
Solution Approach 2:
The invention changes the fundamental parameter of hammer movement from linear translation to rotational motion. By altering the degree of freedom from one-dimensional linear movement to two-dimensional rotational movement constrained by specific angular positions, the system achieves greater stability and prevents unintended activation during drops.
2Measurement precision
If the hammer is hingedly connected to the slide with rotation axis perpendicular to longitudinal direction, then shooting accuracy is enhanced and mechanical stress is reduced, but device complexity increases
Solution Approach 1:
The hammer's rotation axis is oriented transversely (perpendicular to the longitudinal axis of the firearm), introducing a dimensional change in the mechanism's orientation. This transverse rotation allows the hammer to strike the firing pin from a more favorable angle, improving shooting accuracy while the hinge connection simplifies the overall mechanism compared to traditional complex hammer systems.
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 solution enhances shooting accuracy, reduces mechanical stress, allows for easier maintenance, and prevents accidental discharges by ensuring the hammer remains secure and balanced, maintaining high accuracy even in rapid firing and reducing overall firearm dimensions.
Implementation Method 1
gun comprises elastic means forcing constantly the hammer towards a firing position
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Gun (1) comprising a gun frame (2), a barrel (4) supported by the gun frame (2), a slide (8), translatable longitudinally in relation to the barrel (4), and at least a hammer (10), rotatably mounted with respect to the gun frame (2) so as to move at least a firing pin (12) of said gun (1) towards the barrel (4). A centreline plane (Z) crosses said gun (1) between opposite gun flanks (14, 16), and the rotation axis (R) of said hammer (10) lies in the centreline plane (Z) or is substantially parallel to said plane (Z).