EP2048468A2 - Remote control unit for machine guns - Google Patents

Abstract

A remote firing control for an automatic hand weapon, e.g. a machine gun or self loading gun, has the trigger pulled by a firing solenoid magnet and with the safe operating sequence controlled by a securing safety solenoid magnet. The magnets are fitted to the rear of the breech in place of a shoulder stock and are operated by a control program which ensures the correct firing sequence, e.g. safety release, firing, end of firing, pause, safety lock. The program controls single shot as well as automatic burst.

Description

The invention relates to the remote control of infantry weapons in particular those of machine guns. For this purpose, the machine gun is held in a device, for example in a carriage, which contains a safety actuator for securing or unlocking the machine gun and a trigger actuator for firing the machine gun.

As an introduced device machine guns are called, which passed the weapons and security qualification and have gone into the use. The qualifications must be repeated by changing weapon-critical parts. The shoulder rest, the handle and the tripod, which are dismantled as part of the mass compensation, are not among the weapon critical parts.

By mistake on or in the remote control of the machine gun, for example, by wire break, emergency stop u. Ä., There may be a change in the operating sequence, which in the regular functional sequence of the functional steps "Unlock" - "firing" - "Stop fire" - "waiting time" - "Save" composed. Changing this order of operation can result in an uninterruptible continuous fire. The reason for this is the same mechanism in the handle with all these weapons. Moving the safety lever / lever from the firing position to the safety position while the trigger is depressed will jam the catching blade, preventing the catch from being caught. Uninterruptible firing can result in collateral damage to the target area and destruction of the machine gun and gun carriage as a result of firing overload. In any case, it leads to the loss of ammunition stock.

Out DE 102 15 910 B4 a device for increasing the security of the operation of a gun zuzuschießenden is known. As you know, with such weapons, the shutter always goes forward with continuous fire and takes the cartridge with it, even if the last shot of the continuous fire drops. Therefore, a second magnet is included, which serves to ensure that, as in single fire, the closure after the last shot to the rear in the safe state is performed.

DE 102 04 292 A1 also relates to a device for increasing the safety of the operation of a machine gun with a second in the path of the Abfeuerermagneten to provide increased safety in errors in the firing circuit and to avoid accidental firing.

The not before published DE 10 2007 011 591.3 Proposes to use only a stroke-holding magnet as the electric actuator of the fuse. Between the magnet and the rotary switch is a transmission linkage whose transmission ratio can preferably be changed manually. With the weapon secured, when the magnet is at rest and the rotary switch is set to "Safe", the translation can be preset to "single fire" or "continuous fire", as this choice is usually not time-critical and thus this operation on the weapon is acceptable , When switching the magnet, the weapon is unlocked in the sequence in the preselected state. If the magnet fails, the weapon automatically returns to the secured state.

The invention has as its object to ensure compliance with the operating sequence both in case of failure and under extreme environmental or operating conditions with simple means.

The object is achieved by the features of claim 1. Advantageous embodiments are shown in the subclaims.

The invention is based on the idea, once by means of an adaptable magnetic carrier frame at the rear end or to the bottom piece, preferably instead of the shoulder support of a machine gun made interchangeable and ideally mount in these a trigger magnet and a safety magnet. Both magnets ensure that the safe operating state is achieved in the event of a fault. In addition, there must be no entry into the operating sequence if there is an error.

As a safety magnet to a known Hubhaltemagnet is replaced by a Hubhaltemagnet with redundant holding winding. The supply of the holding windings is in each case by a capacitive energy storage, hereinafter referred to as buffer capacitor to comply with the waiting time in the operating sequence. This redundancy allows for the continuous alternating testing of both the hold-winding and buffer capacitor arrangement with respect to line breakage and capacitance loss. The risk of interruption of both retaining windings by loosening a possible plug connection between safety magnet and buffer capacitors is sensory detected by retracting (shortened) plug contacts. From the first error firing is interrupted or suppressed to comply with the order of operations, or not to allow their introduction.

Furthermore, the pull-in winding of the securing magnet is supplied via a capacitive energy store, referred to hereafter as a smoothing capacitor, which supplies the energy for the duration of the tightening, that is to say the duration of the switched-on take-up winding. The smoothing capacitor significantly reduces the supply current for the benefit of the lead design and provides a large winding current for the benefit of the pull winding design. With the Amperewindungszahl the suit winding, the lifting of a magnet is set. The space of the attraction winding is in this case inversely proportional to the winding current. The larger the winding current, the smaller and lighter the magnet is for the same lifting work.

Furthermore, the smoothing capacitor is charged to a specified voltage via a voltage converter in order to be able to provide a constant energy, for the benefit of magnetic design, independently of a vehicle electrical system voltage (17.5 V to 32 V). With defined energy supply at the highest possible charging voltage, the magnet can be small and easily interpreted.

Furthermore, as a trigger magnet, the previous solenoid is replaced by a reversing solenoid, allowing for single-fire shooting and rapid single-fire shooting. The energy for the stroke and return stroke supplies the described smoothing capacitor. The double use of the smoothing capacitor saves space and mass.

Furthermore, with a current stabilizer, the starting current in the trigger magnet is reduced to a holding current as soon as its armature is in the working position. The holding current is sufficient to hold the anchor in the working position. The Stromkonstanter significantly reduces the supply current, especially in the case of continuous fire or intermittent firing (Dauerfeuerschießrhythmen) to the advantage of the cable layout.

Optionally to the current stabilizer the installation of a holding magnet with the advantage of the smallest holding current is possible. The disadvantage of a holding magnet-related Rückhubverzögerung and a more complex magnetic structure are weighed separately.

In order to produce the function and accuracy, the same conditions must apply to the machine gun in the gun carriage as to the machine gun operated by the infantryman. The unit of returning mass and return path shall not deviate significantly from the unit of machine-gun mass in the shoulder stop of the infantryman. Otherwise, the weapon's functional behavior changes, followed by lesser accuracy, increased wear, and malfunction.

In continuation of the invention it is provided to attach the now small and light magnets over previous solutions instead of the shoulder rest on the machine gun. This improves the efficiency in the power transmission without obstructing the required rapid tool-free installation and removal of the machine gun. With better efficiency consequently smaller and lighter magnets are used, whereby the returning mass approaches the originators. When attaching the magnets to the shoulder rest interface, the force transferring force from the magnets to the trigger and retainer wing / lever is forcibly coupled into the trigger guard and the gun guard. The power transmission is designed such that the lateral forces on the armature shaft of the magnets in terms of life are minimal.

As a further advantage of this solution is to be noted that the machine gun of the infantryman and that remain identical in the gun carriage and therefore interchangeable. In particular, functional intervention in weapon-critical grip to comply with the operating sequence must not be made. In addition, the connection and switching elements are smaller, lighter and cheaper due to lower supply current. The total weight of the carriage drops compared to the known carriages. The magnetic forces can be dosed more accurately because they are more independent of the vehicle electrical system voltage. It can be reproducible Create minimum waiting times. The new trigger magnet (reversible lifting magnet) enables the unparalleled single fire for machine guns. The magnet and mechanism unit becomes an easily replaceable unit (LRE) using plugs for the convenience of logistical support. The functional test (FP) required in accordance with defense equipment standard VG 95 287 can be carried out both electrically and manually.

Based on two embodiments, the invention will be explained in more detail.

It shows:

Fig. 1

a flow chart-like representation of the sequence of operations of a machine gun,

Fig. 2

a right side view of a known machine gun with the attachment for a trigger and a safety magnet,

Fig. 3

a view from behind Fig. 2 .

Fig. 4

a view from the left Fig. 2 .

Fig. 5

an attachment to another machine gun.

Original parts of the respective machine gun (not shown in detail, as known) are for better understanding in Fig. 2 to Fig. 5 featuring texts.

Fig. 1 shows in general form the operating sequence of an automatic machine gun (MG), wherein in the case of an error, an automatic sequence is initiated. Here, a distinction is made between errors in the power supply F1 (power interruption, emergency stop, undervoltage) and sensor-detected errors F2. In case of errors in the power supply, the machine gun is transferred to the secured state (MG OFF and secured). For sensor-detected errors, which are derived from the function monitoring FÜ according to defense device standard VG 95 287 and include the mechanical assemblies, the machine gun is transferred to the secured state (MG fault and secured) and communicated the error by the integrated test system IPS the operator. The energies for the stroke from the working to the rest position are taken from both magnets of the respective integrated spring. The tensioning of these springs takes place during the working stroke.

Fig. 2 shows the side view from the right of the rear part of a machine gun without shoulder rest. Parts of the machine gun 11.n are for better understanding in Fig. 2 featuring texts. At the bottom piece, instead of the shoulder support (not shown), the magnet carrier frame 6 is preferably suspended without tools. The magnetic frame 6 carries the trigger magnet 1, the securing magnet 7 and the mechanism for transmitting power between the magnet and the machine gun. The armature shaft of the trigger magnet 1 ends preferably in a joint 1.2. In the joint 1.2 a guided in the frame 6 preferably U-shaped, the handle on the left side evasive, rod 3 is mounted. When hanging and staking from the frame 6 on the bottom piece, the front in the direction of weft end of the rod 3 lays like a finger in front of the trigger. The front end of the rod 3 is slidably or preferably provided with a roller 3.1, so that it slides or rolls on the trigger during the lifting movement. The magnet 1 preferably has a connector 1.1, which is permanently installed as shown or mounted on a cable tail. Alternatively, the armature shaft terminates in a connection to which the elastic rod 3 is attached. Due to space constraints, it may be necessary that the armature of the trigger magnet 1 and the securing magnet 7 is extended by the bearing plate B 1.3 or 7.3 and provided with a handle for manual operation of the trigger or the weapon safety.

Fig. 3 shows the bolt, with the frame 6 is staked on the machine gun. The arrangement of the two magnets 1 and 7 is determined by the external space conditions, a displacement of the magnets 1 and 7 to each other or one above the other is possible and permissible.

Fig. 4 shows the side view from the left of the machine gun. The armature shaft of the securing magnet 7 preferably ends in a joint 7.2. From this, the magnetic force is transmitted by means of a rod 8 via a further joint 9.1 to a rocker 9. The rocker 9 is mounted in the frame 6. About the bearing point 9.2, the rotational movement is transmitted to safety wing die 9.3. When hanging and staking the frame 6 on the bottom piece, the frictional connection between the die 9.3 and the safety wing takes place. The shape of the die 9.3 satisfies the secure adhesion. Alternatively, the armature shaft ends in a connection to which a rack is attached. The lifting movement of the securing magnet 7 is converted by means of the rack into a rotational movement of the rocker 9. Alternatively, the joint can be performed 9.1 as a slot in which the extended armature shaft is staked.

The operation is as follows: Fig. 5 shows the side view from the right on the back of another machine gun. The illustrated construction is equivalent to that in FIG Fig. 2 to Fig. 4 shown. At the bottom piece, instead of the shoulder support (not shown), the magnet carrier frame 6 is preferably mounted without tools on the bayonet coupling of the shoulder support and locked with a bayonet nut 10. The magnetic frame 6 carries the trigger magnet 1, the securing magnet 7 and the mechanism for transmitting power between the magnet and the machine gun. The armature shaft of the trigger magnet 1 ends preferably in a joint 1.2. In the joint 1.2, the guided in the frame 6 is preferably U-shaped, the handle on the left evasive, rod 3 hooked. When attaching and locking the frame 6 at the bottom of the front in the direction of weft end of the rod 3 engages like a finger forced against the trigger. The front end of the rod 3 is slidably or preferably provided with a roller 3.1, so that it slides or rolls on the trigger during the lifting movement. The trigger magnet 1 also here preferably has a connector 1.1, which is permanently installed as shown or mounted on a cable tail. The same applies to the plug 7.1 of the securing magnet 7. The arrangement of the magnets 1 and 7 is determined by the external space, a shift both to each other or one above the other is possible and permissible. The armature shaft of the securing magnet 7 preferably terminates in the joint 7.2. From this, the magnetic force is transmitted by means of a run in the frame 6 contour pin 5 on the safety slide. When attaching and locking the frame 6 on the bottom piece, the frictional connection between the contour pin 5 and the safety slide takes place. The lifting movement of the securing magnet 7 is converted by the contour pin 5 in a transverse movement, by which the safety slide between the positions secured and unlocked changes.

Tightening windings are supplied with voltage for the duration of the lifting movement (<100 ms), holding windings for the duration of holding in the working position. The armature of the securing magnet 7 is moved from the rest position to the working position when the contactor switches on the safety switch on the operating device. When switching off the anchor of the securing magnet 7 falls back by the minimum waiting time delayed in the rest position.

The minimum waiting time determined from the buffer capacitor holding winding arrangement is greater than the return stroke movement time of the tightening magnet armature plus a reserve time> 1 / cadence. In this way, the operating order is according to Fig. 1 respected. The lifting movement of the safety magnet is prevented when the armature of the trigger magnet, detected by sensors, is not in the basic position.

A first monitor checks the buffer capacitor 1 holding coil 1 arrangement of the fuse magnet. A second monitoring checks the buffer capacitor holding winding arrangement of the securing magnet 7. The monitors check alternately, whereby the current operation must not be interrupted. The - thus sensory detected - failure of one of the two arrangements transfers the machine gun in the secured state in compliance with the operating sequence according to Fig. 1 , The detected fault is communicated to the user by the integrated test system.

Single-fire and continuous fire are possible if there are no faults in the safety circuit, if none of the monitoring reports an error. The position signals of the magnets 1 and 7 are also monitored.

The single fire is initiated when the shooter presses the fire button on the directional handle. The attraction winding of the trigger magnet 1 is supplied with voltage for the duration of the lifting movement and a holding time. Then retraction winding is supplied with voltage for the duration of the return stroke. Depending on the weapon type, ie depending on the weapon cadence, these supply times will more or less overlap. For this purpose, the energy of a smoothing capacitor is used, which is designed for the fast process.

The continuous fire is also initiated by pressing the fire button on the directional grip. In this case, the pull-in winding of the trigger magnet 1 is tensioned until the shooter releases the fire button. The trigger magnet 1 carries out the lifting operation with the energy of the buffer capacitor and is designed such that it can be held in the firing position with the subsequently lower current. When the shooter releases the fire button, the trigger magnet returns to its home position via its internal spring. Optionally, the return stroke can be carried out quickly via a second buffer capacitor connected only to the pull-back winding. This arrangement is used for fast single fire.

Instead of capacitors, it is also possible to use other energy stores which can apply the same power levels required by the system. The capacitors can be composed of several and different types of capacitors depending on space and cost.

Claims (8)

Remote control operation for a machine gun with a trigger (11.4, 12.4) and a trigger guard (11.5, 12.5), characterized in that an adaptable magnet carrier frame (6) at the rear end or to the bottom piece (5), preferably instead of the shoulder support of a machine gun (20, 25) can be hung with a trigger magnet (1) and a securing magnet (7). Operation according to Claim 1, characterized in that the securing magnet (7) is a lifting holding magnet with a redundant holding winding. Operation according to claim 2, characterized in that the supply of the holding windings takes place in each case by a capacitive energy store. Operation according to claim 2 or 3, characterized in that a loosening of a possible plug-in connection between securing magnet (7) and buffer capacitors is sensory detected by trailing plug contacts. Operation according to one of claims 1 to 4, characterized in that the attraction winding of the securing magnet (7) is supplied via a capacitive energy store. Operation according to one of claims 1 to 5, characterized in that as Abzugssmagnet (1) a Umkehrhubmagneten is used. Operation according to one of claims 1 to 6, characterized in that is reduced with a current constant of the starting current in the trigger magnet to a holding current as soon as the armature is in the working position. Operation according to one of claims 1 to 7, characterized in that the smoothing capacitor is charged via a voltage converter to a predetermined voltage in order to provide a constant energy independent of a vehicle electrical system voltage can.

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