Weapon Feed Safety Bolt Dynamics Against Acceleration
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Solution Overview
Problem
Existing safety devices for ammunition are complex in assembly and limited in their ability to prevent damage from high transverse and longitudinal accelerations, as they require multiple helical compression springs and have a cylindrical design that restricts positioning.
Innovation Solution
A safety device with radially movable safety bolts and a spring device that secures a percussion weight, featuring an annular groove in the ammunition housing and a cup-shaped lower part with radially oriented through holes, allowing the bolts to twist and release an axial impact path for the firing pin to hit a detonator during high accelerations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known safety devices with flybolt and stop are used, then ammunition is protected against damage from accelerations, but the protection is limited to absolute amounts of transverse and longitudinal accelerations
Solution Approach 1:
The safety bolt is designed as a resilient element that can dynamically adapt to acceleration forces. It features a resilient portion that can be elastically deformed, allowing the bolt to move and absorb energy during high acceleration events, then return to its original position to maintain security
Solution Approach 2:
The invention changes the physical state and properties of the safety bolt by incorporating a resilient portion with specific elastic characteristics. This allows the bolt to undergo temporary deformation under high acceleration forces while maintaining its structural integrity and security function
2Reliability
If the safety device structure is made more complex to withstand higher accelerations, then damage protection improves, but device complexity increases
Solution Approach 1:
The safety bolt integrates multiple functions into a single component: it serves as both a securing element and a resilient energy-absorbing element. The resilient portion is incorporated directly into the bolt structure, combining the securing function with the acceleration-withstanding function in one unified component
Solution Approach 2:
The safety bolt performs multiple functions simultaneously: it secures the firing pin in the normal position, absorbs energy from high acceleration forces through elastic deformation, and automatically resets to maintain continuous protection. This multi-functionality eliminates the need for separate complex mechanisms
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 safety device maintains a simple structure and effectively withstands high transverse and longitudinal accelerations without sustaining damage, ensuring reliable operation.
Implementation Method 1
The spring device 60 is formed by an annular spring 62... When transverse forces occur, such as those produced during a drop test, the corresponding securing bolt 30 can move outwards in the radial direction if the forces acting from outside exceed the spring force of the mechanically prestressed spring device 60... immediately after the external forces are again smaller than the spring force of the spring device 60, the safety bolts 30 are reset by the spring device 60 into the starting position
Implementation Method 2
The same details are denoted in FIG. 3 with the same reference numbers as FIG. 1, so that it is not necessary to describe all these details again in detail in connection with FIG. FIG. 3 shows the safety device 10 in a sectional view similar to Figure 1 in the unlocked position, with the triggered safety bolts 30 moving radially outwards as a result of the centrifugal forces acting on them during the rapid rotation of the ammunition 14 caused by a gun barrel
Data Source
Figure 1~3
AI summary
A safety mechanism for the firing pin (12) of a weapon, while ammunition (14) is being fed into the breech, has a number of safety bolts (30) distributed around it with radial movement through the lower section (22) of the ammunition. A spring unit (60) in a beating weight (40) holds them firmly axially. When the ammunition is rammed home into a ring groove (18), the spring force is overcome to clear the firing pin path to strike the primer at the base of the ammunition.