EP1237230A1 - Vibration resistant electrical connector for low signals, and firearm with such connector - Google Patents

Abstract

The weak signal electrical connector (9) has two connector pad sets (20,21) support mounted (16,17) with spring returns (22). The two connection pads face each other for contact. The two connection contact surfaces (20c,21c) are curved so that one surface fits into the other.

Description

The invention relates to an electrical connector allowing particularly the noise-free electrical transmission of low level signals (especially between 2 and 25 mV) between two removable parts of the same device susceptible to strong shocks or vibrations, such as a shooting weapon or a shooting weapon simulator for example.

As part of the design of a small arms simulator of shooting, it may be useful to provide removable parts of each other, either because we want to be able to easily access certain critical parts of the simulator in order to facilitate maintenance, either because we wish to carry out the simulator from a real weapon, keeping as many as possible parts of the original weapon, and that the latter is composed of different removable parts.

But weapon simulators have various sensors or electrical components, generating low level electrical signals (2 to 25 mV for example) intended to be transmitted to final processing means and / or of processing said signals (computer means of a simulation system for example). To allow the transmission of electrical signals generated by electrical components located in a part of the weapon simulator towards means of final or intermediate processing located in another part of it it can therefore be necessary to ensure the electrical connection between these two parts, while authorizing relative assembly and disassembly of said simple and rapid parts, and therefore an automatic establishment and dissociation of the electrical connection and snapshots with assembly and disassembly operations.

However, weapon simulators are subject to vibrations or violent shocks, such as, for example, shocks linked to the recoil force undergone by the simulator during the shooting (which corresponds to the recoil force undergone by the real weapon when a cartridge explodes). If these shocks had a defined direction and substantially constant, the electrical connection between two parts of the simulator could easily be guaranteed by the use of a connector provided with studs (or contact pins) and associated contact plates with which they are maintained in permanent contact by elastic axial return means, said means studs and plates being arranged so as to present contact faces perfectly orthogonal to the direction of the shocks. Such a connector is for example described in DE-198.38.418, US 4,904,213 or US 2,724,096. But the inventors have shown that weapon simulators undergo shocks and vibrations of variable directions, even omnidirectional.

In addition, even if there was a preferred direction of shock, it would not necessarily be possible to position said studs parallel to this direction: the arrangement of the studs is indeed imposed by nature and relative position of the parts of the simulator to be connected (and in particular by the orientation, relative to the direction of impact, of the adjacent faces of these parts), as well as the space available inside the two parts to be able to house the connector. Known connectors with studs and associated plates are therefore unsuitable for the conditions of use of firing weapon simulators.

In addition, the relative assembly / disassembly operations of parts of the simulator may require, in addition to translational movements, a relative pivoting of the two parts. Such operations do not allow guarantee correct contacting of the above-mentioned earlier studs and may possibly damage them.

There are also connectors, such as the one described by US-6,146,210, comprising a male plug with male electrical contacts of the type pin elastically mounted on a first support by means of springs, and a socket with female electrical contacts of the socket type fixed mounted on a second support, the male and female electrical contacts having surfaces of conjugate contact (comprising a cylindrical portion and an end spherical). By surfaces (or shapes) is meant two surfaces (or substantially identical shapes, one concave, the other convex, so that, nested one inside the other, they are substantially in contact and tangent in all point. These connectors are incompatible with mounting / dismounting parts of the simulator by relative pivoting of these around an axis parallel to the faces adjacent to said parts, taking into account the length of the male contacts.

GB-413.030 describes a connector comprising a first series of contacts (male) having conical contact ends or spherical, and a second series of (female) contacts whose ends of contact are milled so as to have a shape combined with that of contact ends of the first series to be able to fit on them. The contacts of the two series are resiliently mounted on supports by means springs. The shape of said contacts allows them to be assembled by pivoting relative of their support. However, the inventors have demonstrated that such a connector did not allow permanent and safe electrical contact between the contacts associated in extreme conditions of omnidirectional vibrations and shocks such as those encountered in a shooting weapon simulator. Indeed, in these conditions of use, micro-cuts and noises greater than the signals transmitted appear. This phenomenon can be explained by the fact that the techniques current machining does not allow to make conjugate contacts of perfectly identical dimensions and shapes, and that the contacts deform slightly under the effect of vibrations and shocks. So the contact Electricity is often only established at a single point (variable over time depending on direction of the main force undergone at time "t" by the connector) so permed.

The invention aims to overcome the drawbacks of connectors known, and in particular to propose a connector in two removable parts in particular by relative pivoting, capable of transmitting signals securely low levels (especially 2 to 25 mV), under shock and particularly unfavorable vibration. In particular, the invention aims to propose a connector adapted to withstand strong shocks or vibrations and omnidirectional.

The objective of the invention is also to propose a connector, ensuring the transmission of signals between two parts of a device removable from each other, suitable for mounting and dismounting said parts simply and quickly, without risk of damaging the connector or any of its constituent elements. In particular, the connector according to the invention allows mounting and dismounting by relative pivoting of the parts.

To this end, the invention relates to an electrical connector comprising at least one pair of conductive contact pads, integral respectively of two insulating supports, and elastic axial return means at least one of the studs of each pair relative to its support adapted so that, when the two supports are in the relative electrical connection position, the two facing studs are applied one against the other elastically, in contact electric. The supports are said to be in the relative electrical connection position when they are arranged so that the two studs of the same pair face each other from each other and the distance between the supports is less than a distance maximum given beyond which the facing studs are no longer in contact. Any intermediate position between the limit position defined by this distance maximum and a position of maximum approximation of the supports constitutes a relative position of electrical connection. By means of elastic axial return, we means any means capable of exerting on the stud a non-zero axial force tending to apply said pad to the facing pad as soon as they are in contact (i.e. as soon as the supports are in the relative electrical connection position). Of preferably, this force is inversely proportional to the distance separating the supports.

The connector according to the invention is characterized in that the associated studs of each pair of studs have non-planar contact faces and unconjugated, adapted to be able to fit into one another and define between they a peripheral linear contact. This characteristic, associated with the presence elastic return means, guarantees permanent contact with the associated studs: the pad (or the pad portion) having a convex contact face is embedded in the pad (or the pad portion) of the concave contact face and maintained inside said concavity by the axial force exerted by the elastic return means. The non-planar shapes of contact faces adapted to define contact between them linear peripheral, act as many lateral stops (acting all simultaneously, in all directions) to maintain the studs in permanent electrical contact, despite violent shocks and vibrations.

Advantageously and according to the invention, one of the pads has a fully concave contact face, the other pad having a contact face fully convex. In particular, the concave contact face pad has the shape of a cone (truncated or not), and the convex contact face pad forms it a spherical cap (and in particular a half-sphere). So whatever the direction of the shocks, thanks to the elastic return means, the contact between the two plots is constantly drawn at any point in a circle. In case of imperfect machining of the spherical cap of the male stud or the conical cap of the female stud, the contact is at least guaranteed on a plurality of arcs of circles and / or line segments. This latter embodiment is more particularly advantageous in the case a connector electrically connecting two parts of a device that can be dismantled relative pivoting. The respectively spherical and conical shapes of the studs associated facilitate such assembly and disassembly operations, the caps spherical and conical being free to rotate with respect to each other, at least on a given angle sufficient to allow the two parts of the device to be separated.

Advantageously and according to the invention, the return means axial elasticity of a stud include a compression spring, supported by a end on the insulating support and at the other end on the stud. In a mode of advantageous embodiment, for each pair of studs, only one of the studs is associated with axial elastic return means, the other stud being mounted fixed on its support. The pad associated with the elastic return means is preferably that having a convex contact face (in particular in the form of a spherical cap), the associated fixed stud having a concave contact face (in particular in the form of cone). The elastic return means thus being arranged, taking account of the shape of the contact faces of the pads, part of the shocks received by the two pads is transmitted to the elastic return means, whatever the direction of said shocks. Thanks to the invention, the shocks and vibrations to which the studs are subjected are therefore partly absorbed by the elastic return means. What is not the case of the previous pin and plate connectors, for which a side impact by example (i.e. perpendicular to the axis of the pins) results in a force of shear fully supported by pins.

Advantageously and according to the invention, the studs are covered a thin plating, typically a few tenths of micrometers, including gold and nickel, to prevent corrosion and facilitate electrical transmission. Such an alloy further contributes to reducing or even remove any residual noise from the slightly mobile contact of associated studs. It should be noted that the elastic return means, combined with the shape studs, also contribute to making these noises negligible by avoiding all relative displacement of said studs: the return means, by exerting an axial force on at least one of the pads, prohibit any relative axial displacement of said pads; their shapes adapted to fit into one another and establish a linear contact peripheral, associated with this axial force, also makes it possible to limit or even to prohibit any other relative movement of the studs. Thus, the connector obtained is able to transmit low level signals (2 to 25 mV). Furthermore, the alloy chosen being slightly malleable, the repeated shocks undergone by the studs during use of the weapon simulator help to shape contact faces of the stud perfectly adapted to said shocks, to overcome possible machining imperfections and to increase the effective contact area of said pads initially theoretically linear and which can, in places, become surface. This characteristic helps reduce the noise that may appear on contact with both pads.

Advantageously and according to the invention, each pad has one end of connection to a conductive wire having a shape called shape of tulip, adapted to facilitate the insertion and soldering and / or crimping of said wire conductor in said connector end.

Advantageously and according to the invention, the pad supports insulators are made of rigid synthetic material resistant to mechanical shock and / or important thermal. In addition to the shocks and vibrations mentioned above, these supports are subject to high temperatures, especially when soldering wires conductors on the pads. This welding is indeed carried out in the immediate vicinity from the face of the support opposite to that receiving the contact end of the stud, at a temperature of around 300 ° C for a few seconds (typically 4 to 5 s). It is imperative that the support does not present any deformation following this operation, in order in particular to preserve the relative movements of the stud and its support.

The invention extends to an apparatus comprising at least two parts removable from each other, and between which a weak electrical signal level must be transmitted, characterized in that it comprises an electrical connector as described above, one of the insulating supports of the connector being integral of a first part of the device, the other insulating support being integral with the second part.

In particular, the device can be a light weapon for live fire or simulation formed by a plurality of parts which can be dismantled together, one of which at least comprises sensor means intended to emit electrical signals to be transmitted to an electronic and / or computer unit arranged in a other party, with a view to their processing and / or their transmission to means computer operating outside the weapon.

Such a live fire or simulated weapon includes example a removable mechanism box, fixed in the lower part of a box breech and containing in particular a firing trigger whose position is identified by a sensor in order to determine with precision the instant of the start of the shot. The signals emitted by the sensor must be transmitted to an electronic unit located in the barrel of the weapon. For this purpose, there is an electrical connector at the border between the mechanism box and the cylinder head box, one of the connector supports being secured to the mechanism housing, the other support being secured to the cylinder head.

Such a light live-fire or simulated weapon may also present a removable stock, fixed in the rear part of a cylinder head box and which includes a strain gauge to measure the pressure exerted by the shooter on the back side of the butt. The signals emitted by this strain gauge are transmitted to the electronic unit (located in the barrel) via a connector one of the supports of which is integral with the removable stock, the other support being secured to the cylinder head box.

Such a live fire or simulated weapon can also have a removable trigger guard, fixed under the barrel of the weapon and comprising a sensor position of the safety of the weapon in order to control the position of said safety at at any time and in particular to determine when the shooter withdraws the security according to various shooting scenarios. The signals emitted by this sensor are transmitted to the unit electronic via a connector of which one of the supports is integral of the trigger guard, the other support being integral with the barrel.

The invention also relates to a system for simulating shooting comprising at least one screen for viewing target images associated with means for diffusing said images, at least one simulation weapon comprising a laser simulating shooting on the display screen (s), means computer, linked to the means of diffusion and to the weapon (s) of simulation and suitable for controlling the dissemination of target images, detecting the impact of broadcasts laser of the simulation weapon (s) on the screen (s), calculate the position of the impact of the corresponding simulated shots on the target images, etc., said system being characterized in that it comprises at least one simulation weapon comprising all or part of the characteristics defined above.

The invention also relates to a connector, an apparatus and a simulation system characterized in combination by all or some of the features mentioned above and below.

• la figure 1 est une vue de profil d'une partie d'une arme de tir de simulation selon l'invention,
• la figure 2 est une coupe par un plan "vertical" (lorsque l'arme est dans une position normale de tir) de deux connecteurs selon l'invention présents dans l'arme représentée sur la figure 1.

Other objects, characteristics and advantages of the invention will appear on reading the following description which refers to the appended figures representing preferred embodiments of the invention given solely by way of nonlimiting examples, and in which:

• FIG. 1 is a side view of part of a simulation firing weapon according to the invention,
• FIG. 2 is a section through a "vertical" plane (when the weapon is in a normal firing position) of two connectors according to the invention present in the weapon shown in FIG. 1.

Figure 1 shows part of a light weapon automatic submachinegun type, including a barrel 1 for supporting a barrel 2 extended at the rear by a cylinder head box 3, inside which moves a bolt 10, and a butt 11 to allow the shooter to position the weapon resting against his shoulder. The shooting is controlled by a trigger 4 whose movement is transmitted to a hammer 5. When the rifle is cocked, the hammer 5 is in a rear position in which it is subjected to a force directed forward exerted by a spring in compression, the hammer being locked in this position by a trigger not shown. Pressing the trigger turns the trigger and releases the hammer which pivots violently forward, coming to strike, in the case of a real weapon, a striker causing the explosion of the cartridge. Concerning of a simulation weapon, striker and cartridges were replaced by a laser each emission of which simulates a shot. For the simulation to be correct and efficient, the laser emissions are triggered at the precise moment of the start of the shot corresponding real. This stroke departure corresponds to the precise moment when the hammer 5 reaches the end of the stroke and hits the striker. This hammer position is therefore detected by a magnet secured to the hammer, associated with a sensor (effect Hall for example) secured to a fixed part of the weapon and located exactly opposite of the magnet when the hammer is at the end of its travel.

The electrical signals produced by the hammer sensor must be transmitted to a computer system external to the weapon. Their treatment allows to activate various simulation instruments at the start of the shot, such as the aforementioned laser, for simulating shooting, as well as an air device tablet feeding a chamber in the barrel of the weapon at the front of a ballasted piston, for simulating the recoil force. For this purpose, the sensor is connected electrically to an electronic unit 6, located in the barrel 1, which performs a first processing of the received signals and transmits the resulting digital data to the computer system via a series of cables 7.

The hammer 5 of such a weapon is mounted on a case of removable mechanisms 8 fixed in the lower part of the cylinder head box 3. The mounting and dismounting of this removable housing is effected by relative pivoting said parts (around a transverse axis). The housing 8 has an opening in upper part through which the hammer 5 projects opposite the striker. We could therefore consider running the connecting wires of the hammer to electronic unit 6 through this upper opening, taking care arrange them so as not to impede the stroke of the cylinder head 10. However, it it is useful, for maintenance reasons, to keep the possibility of dismantling the mechanism housing. A connector 9 according to the invention is therefore interposed between the mechanism box 8 and the cylinder head box 3. A first part of the connector (comprising a series of parallel pads and a support block for said pads) is fixed in the upper part of a side wall of the mechanism housing so that its contact pads are flush with the upper opening of said housing. The second part of the connector is fixed on the side wall of the cylinder head box located in the extension of that of the mechanism housing, so that the two parts of the connector are facing each other and in electrical contact. This connector 9 is shown in section along a vertical plane in Figure 2, and will described in more detail below.

The simulation weapon shown in Figure 1 presents a removable stock 11, inside which is housed a strain gauge 12 in view of measuring the pressure exerted on the rear face of said stock. In particular, this strain gauge makes it possible to control, for didactic purposes, the behavior of the shooter under the effect of the recoil force, and in particular to check the good support of the weapon by the shooter against his shoulder at the start of the shot. The data measured by this strain gauge are transmitted to the unit electronics 6 via a connector 13 extending longitudinally. The connector 13 allows an electrical connection to be made between the butt 11 and the cylinder head box 3 integral with the barrel 1.

The simulation weapon also has a trigger guard 14 removable, carrying trigger 4 and safety device 13. As part of a simulation of technical shooting involving realistic scenarios projected on a video screen, it may be useful, for educational purposes, to control the shooter's behavior in various situations, in particular by checking the state of security (removed or not) 13 throughout the simulation scenario. The shooter is in fact required, to the extent of possible, to keep the triggered safety off when fired, and not to remove it only immediately before firing. In addition, the simulation system is suitable for prohibit simulated firing (laser inactive) when safety is activated. The position of safety 13 is identified by a magnet inserted in said safety, detectable when this is removed by a sensor arranged on the trigger guard 14. Said trigger guard being removable, a connector 15 is installed between the trigger guard 14 and the barrel 1 for the transmission of signals from the safety sensor to the electronic unit 6.

Figure 2 shows a section through a vertical plane of a detail of the simulation weapon shown in Figure 1 on which the connectors 9 and 13. Connector 9 is made up of two independent parts secured respectively to the mechanism housing 8 and the cylinder head box 3 of the simulation weapon. The first part includes a series of four studs 21 parallel females carried by an insulating support block 16, the second part comprising a series of four male studs 20 carried by an insulating support block 17 so that each male stud 20 is opposite a female stud 21 when the mechanism box 8 is fixed to the cylinder head box 3. It should be noted that the blocks insulating supports 16 and 17 have a triple function: they each carry a series studs, male or female, electrically isolate said studs from each other, and allow to fix the two parts of the connector on the two parts of the weapon to connect electrically.

The insulating support block 17 has four reservations 25 of receiving the male studs 20. Each male stud 20 is formed of a cylindrical body 20b and a generally cylindrical contact head 20a of wider section than the body 20b and ending with a convex cap-shaped end 20c spherical. The male stud 20 is subject to a compression spring 22 surrounding itself around its body 20b inside the reservation 25 and limiting the movements relative translation of the pad 20 and the support block 17. Said spring rests on a end on the insulating support block 17, on a shoulder of the reservation 25, and at the other end on the head 20a of the male stud. The male stud 20 is held in its reservation 25 by means of a washer 27 integral with said stud, arranged on a heel 20d of the stud, and coming to bear, under the effect of the spring 22 and when the two parts of the connector are at a distance, against the rear face 31 of the support block 17.

This spring 22 keeps the male stud 20 constantly pressed against the facing female stud 21. Each female stud 21 has a cylindrical body 21b and a contact head 21a ending in a concave end 21c in the shape of a slightly truncated cone into which fits the end 20c of the associated male stud. Each female stud 21 is embedded so fixed in a reservation 26 perfectly complementary to said stud, arranged in the insulating support 16. The respective shapes of the ends in contact with the studs male and female ensure permanent contact of the two studs in all directions (the contact is circular and peripheral), and facilitates assembly / disassembly of the two parts of the connector during assembly / disassembly of the mechanism box 8 relative to the cylinder head box 3 by relative pivoting. The contact between a male stud 20 and a female stud 21 is theoretically linear (it is a circle), but it can become more or less areal (ring) under the action of successive shocks and vibrations undergone by the connector. There are however advantageously peripheral.

Each stud 20 has a heel 20d for connection to a wire conductor 23 from the hammer sensor. Said heel 20d includes a axial recess 27 inside which the conducting wire 23 is inserted. Thus positioned, the conductive wire 23 is welded to the heel 20d, the welding material being brought between the wire and said heel through a transverse hole 28. The weld takes place at a temperature of around 300 ° C, at which the stud, wire and support neighboring insulation are subjected for a few seconds. Conductive wires 24 connected to the electronic unit 6 are coupled to the female studs 21 in a similar manner.

The two parts of the connector are fixed respectively on the side wall 29 of the mechanism housing 8 by means of fixing screws 19 passing through the insulating support 17, and on the side wall 30 of the cylinder head box 3 at fixing screw means 18 passing through the support 16.

The previous remarks regarding connector 9 remain valid for connector 13 ensuring an electrical connection between the butt 11 and the cylinder head box 3. Note that this connector includes two insulating supports of square cross section, supporting 4 pairs of studs distributed on two planes horizontal (and two vertical planes).

A fire simulation system includes a simulation according to the invention, a screen on which are projected, by means of a projector, target images (combat scenario videos for training), and IT resources. Said IT means include between others: a camera for detecting impacts on the laser emission screen from the simulation weapon; a control screen for viewing operating modes of the simulation system, shooter's results, etc. ; a keyboard for entering various data (choice of weapon, scenario, etc.); and a central computer unit for managing the various aforementioned peripherals (including the simulation weapon and an air compressor feeding, at by means of a pipe, a jack located in the barrel of the weapon and serving to reproduce the recoil force at each simulated shot), and for the execution of various programs specific to the simulator, including programs for calculating the position of the impact of the shooting from the impact of the laser beam on the screen, the size of the target and certain characteristics of the real weapon, called simulated weapon, represented by the weapon of simulation.

The simulation weapon includes various position sensors, constraint, etc., including the sensors described above, connected by wires conductors and connectors according to the invention to the electronic unit located in the was of the weapon. The latter includes a memory (of the EEPROM type by example) in which the technical characteristics of the weapon are recorded simulated necessary for the simulation. This electronic unit performs a first processing of the electrical signals that it receives from the sensors, and transmits the resulting digital data to the central computer unit via a data cable transmission. The data is then analyzed by the central processing unit, if necessary, the compressor and the laser of the weapon to trigger a simulated shot.

It goes without saying that the invention can be the subject of numerous variants compared to the embodiments previously described and represented in the figures.

In particular, the shape of the insulating supports and the number of studs can be variable, and depend respectively on the size available inside the removable parts to connect and constraints electrical (nature and level of signals to be transmitted, etc.).

Furthermore, the connectors according to the invention can be used in other devices than the one described above requiring a connector for the transmission of electrical signals, in particular of low levels, between two removable parts subjected to violent efforts and variables, including omnidirectional shocks.

Claims (15)

Electrical connector (9) comprising at least one pair of conductive contact pads (20, 21), respectively secured to two insulating supports (16, 17), and elastic return means (22) of at least one of the studs (20) of each pair relative to its support (17) adapted so that, when the two supports (16, 17) are in the relative electrical connection position, the two facing studs (20, 21) are applied one against the other elastically in electrical contact, characterized in that , for each pair, the two associated studs (20, 21) have non-conjugated non-planar contact faces (20c, 21c), suitable for fitting in one in the other and define between them a peripheral linear contact. Connector according to claim 1, characterized in that one of the studs (21) of the same pair has a contact face (21c) entirely concave, the other stud (20) having a contact face (20c) entirely convex. Connector according to claim 2, characterized in that the concave contact face stud (21c) has the shape of a cone, and in that the convex contact face stud (20c) has the shape of a spherical cap . Electrical connector according to one of claims 1 to 3, characterized in that the means of axial elastic return of a stud comprise a compression spring (22), bearing at one end on the insulating support (17) and at the other end on the stud (20). Electrical connector according to one of claims 1 to 4, characterized in that , for each pair of studs, only one (20) of the studs is associated with means (22) of axial elastic return, the other stud ( 21) being fixedly mounted on its support (16). Electrical connector according to claim 5, characterized in that the stud (20) associated with the elastic return means has a convex contact face (20c), the fixed conjugate stud (21) having a concave contact face (21c). Electrical connector according to one of claims 1 to 6, characterized in that the studs (20, 21) are covered with a thin plating comprising gold and nickel. Electrical connector according to one of claims 1 to 7, characterized in that each stud (20, 21) has one end of connection (20d, 21d) to a conductive wire (23, 24) having a shape called a tulip shape, adapted to facilitate insertion and crimping and / or soldering of said conductive wire (23, 24) into said connector end (20d, 21d). Electrical connector according to one of claims 1 to 8, characterized in that each support (16, 17) is made of rigid synthetic material resistant to significant mechanical and / or thermal shocks. Apparatus comprising at least two parts which can be dismantled from each other, and between which a low level electrical signal must be transmitted, characterized in that it comprises an electrical connector according to one of claims 1 to 9, l one of the insulating supports of the connector being secured to a first part of the device, the other insulating support being secured to the second part. Apparatus according to claim 10, characterized in that it is a real or simulated firing weapon, formed of a plurality of parts which can be dismantled together, at least one of which comprises sensor means intended to emit signals electrical to be transmitted to an electronic and / or computer unit arranged in another part, for their processing and / or their transmission to computer means of exploitation external to the weapon. Weapon according to claim 11, characterized in that it comprises a removable mechanism housing (8), fixed in the lower part of a breech box (3) and containing in particular a firing trigger (5) whose position is identified by a sensor, and in that one (17) of the connector supports (9) is integral with the mechanism housing 8, the other support (16) being integral with the cylinder head box (3). Weapon according to one of claims 11 or 12, characterized in that it has a removable stock (11), fixed in the rear part of a breech box and comprising a strain gauge, and in that one of the connector supports (13) is secured to the removable stock (11), the other support being secured to the cylinder head box (3). Weapon according to one of claims 11 to 13, characterized in that it has a removable trigger guard (14), fixed under the barrel (1) of the weapon and comprising a safety position sensor (13) of the weapon, and in that one of the connector supports (15) is secured to the trigger guard (14), the other support being secured to the barrel (1). Firing simulation system comprising at least one screen for viewing target images associated with means for diffusing said images, at least one simulation weapon comprising a laser simulating shooting on the display screen (s), computer means, connected to the means of diffusion and to the simulation weapon (s) and adapted to control the diffusion of the target images, detect the impact of laser emissions from the weapon (s) of simulation on the screen (s), calculating the position of the impact of the corresponding simulated shots on the target images, said system being characterized in that it comprises at least one simulation weapon conforming to one of the claims 11 to 14.

Images