Cocking Device for Firing Pin Spring via Control Cam
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Solution Overview
Problem
Firing pins in weapons often become prematurely tensioned when the bolt returns to its rear position due to the tensioning of the firing pin spring during bolt transport, which is undesirable.
Innovation Solution
The firing pin spring is tensioned only when the breech or breech head advances in the firing direction using a control cam integrated into a clamping slide, allowing the cocking slide to cock and relax the spring independently of the bolt's forward speed, ensuring the firing mechanism operates independently of bolt cadence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the firing pin spring is tensioned during bolt transport to the rear position, then the firing pin is ready for immediate discharge, but the spring becomes prematurely tensioned which is undesirable
Solution Approach 1:
The control cam on the cocking slide performs preliminary action by tensioning the firing pin spring only during the forward movement of the breech, preparing the firing mechanism at the optimal moment before discharge without premature tensioning during bolt transport
Solution Approach 2:
The control cam integrated into the cocking slide acts as an intermediary mechanism that selectively engages to tension the spring only when the breech advances, mediating between bolt movement and spring tensioning to prevent unwanted premature engagement
2Adaptability or versatility
If the firing pin spring is tensioned independently of bolt forward speed, then firing operation becomes independent of bolt cadence, but requires a separate control mechanism
Solution Approach 1:
The control cam is merged with the cocking slide structure, integrating the independent spring tensioning control into the existing bolt mechanism without adding separate complex control systems
Solution Approach 2:
The cocking slide with integrated control cam serves multiple functions: it controls the firing pin spring tensioning independently of bolt cadence while also being part of the overall bolt operation mechanism, achieving versatility without proportionate complexity increase
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
This solution allows for reliable and independent firing, as the spring tensioning occurs during the breech's forward movement, ensuring the firing pin strikes the primer cap accurately and consistently, regardless of the bolt's speed or position.
Implementation Method 1
a control cam for cocking integrated into a cocking slide
Implementation Method 2
The firing pin comprises a firing pin spring (13.2), which must be cocked
Data Source
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AI summary
Disclosed is a cocking device for a firing pin spring (13.2) of a firing pin (13) of a weapon (100), the firing pin (13) being integrated into a breech (1). This firing pin spring (13.2) is cocked during the pre-run of the control slide (2), by means of a cocking slide (17) on the weapon (100), said cocking slide having a cocking curve (17.1), in which a pin (14.1) of a cocking rocker (14) is engaged.