Remote Ammunition Ignition Lever Locking Against Shock Triggering

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Solution Overview

Problem

Existing remote-controlled ammunition ignition devices face safety issues due to potential unintentional ignition caused by vibrations and shocks, particularly when using pre-tensioned firing pins, which can lead to accidental discharge.

Innovation Solution

A device with a movable guide element and lever system, incorporating a safety mechanism to prevent unintended ignition, utilizing a remotely controlled actuator, a movable lever, and a safety device to impede the movement of the firing pin, combined with a return element to reset the system to a safe state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pre-tensioned firing pins are used for remote-controlled ignition, then ignition reliability is improved, but safety against unintentional ignition deteriorates

Engineering Contradiction:
Improveignition reliabilityVSAvoidunintentional ignition risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device segments the ignition control into three independent functions: pre-tensioning the firing pin, securing the firing pin in a safe position, and triggering the firing pin. This segmentation allows the firing pin to be pre-tensioned for reliable ignition while simultaneously being secured in a safe position to prevent unintentional discharge, resolving the contradiction between ignition reliability and safety.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The firing pin is pre-tensioned in advance to store the necessary energy for reliable ignition. However, this pre-tensioned state is immediately followed by a securing action that locks the firing pin in a safe position until deliberate triggering occurs. This preliminary action followed by control measures resolves the contradiction by ensuring both ignition readiness and safety.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the striking element is made movable for remote triggering, then remote ignition capability is improved, but vulnerability to vibrations and shocks deteriorates

Engineering Contradiction:
Improveremote ignition capabilityVSAvoidvibration and shock sensitivity
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The securing device applies a counteracting force to the movable firing pin, holding it firmly in the safe position against any external disturbances such as vibrations or shocks. This preliminary anti-action prevents the firing pin from moving unintentionally while still allowing controlled movement when the triggering device is activated, resolving the contradiction between remote ignition capability and vibration resistance.

Inventive Principle:
Principle #9Preliminary anti-action

3Reliability

If a separate securing mechanism is added to prevent accidental discharge, then safety is improved, but device complexity deteriorates

Engineering Contradiction:
Improvesafety against accidental dischargeVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The securing device is integrated with the existing firing pin mechanism, using the same structural elements and movement paths. The securing function is combined with the triggering function, where the triggering device simultaneously releases the securing constraint and activates the firing pin. This merging approach improves safety without significantly increasing device complexity.

Inventive Principle:
Principle #5Merging (Combining)

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 provides enhanced safety against accidental ignition by ensuring controlled and reliable ignition processes, even under conditions of vibration and shock, through the use of a movable guide element and safety mechanisms.

Implementation Method 1

An electromagnet is proposed for the actuator, which can be remotely magnetized or demagnetized

Methodology Applied
Scientific EffectElectromagnet: Electromagnet

Implementation Method 2

In the simplest embodiment, a spring can be provided for this purpose

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4718014A2Device for remote controlled ignition of ammunition
Publication Date: 2026.04.01 RHEINMETALL WAFFE MUNITION GMBH
  • EP4718014A2 patent drawingFigure 1~2
  • EP4718014A2 patent drawingFigure 3~4
  • EP4718014A2 patent drawingFigure 5

AI summary

Device for remotely igniting ammunition. The device includes an ignition device (16) and a firing pin (1). Furthermore, the device has a movable lever (4) that can move the firing pin (1). A guide element (2) is movably mounted within the device and, when moved, can cause the lever (4) to rotate. The guide element (2) can assume a rest position from which it can only be moved by an actuator and/or a drive force, which can be remotely controlled. A safety device (14, 18) is also provided, which can restrict the movement of the lever (4).