RU2192601C2 - Firing mechanism of double-barrel grenade thrower - Google Patents

Abstract

FIELD: military equipment, close combat weapons, in particular. SUBSTANCE: firing mechanism of double-barrel grenade thrower includes firing pin with firing springs, sears, cocking mechanism and trigger assembly with one trigger. Firing pins with strikers are placed in split guides and in bushings, rests for interaction with front butts of firing springs located in bores of guides are screwed on front parts of firing pins. Protrusions for interaction with rear butts of firing springs are made in middle parts of firing pins. Protrusions can move in grooves of bushings. Two grooves with inertial and firing rests for interaction with sears are made in middle parts of firing pins. Tail parts of firing pins have flats on two sides with collars to rest against faces of grooves in cocking recess with lockpin anchored in it for interaction with longitudinal grooves of cocking lever are put on lateral axle in lower part of mechanism body. Sears are located in vertical grooves of body and carry firing and uncoupling protrusions. Spring-loaded blocking fixing arms with cones for interaction with conical sockets on axle of bolthead are installed beneath firing protrusions in through vertical hole. Sears have different lengths to position their uncoupling protrusions at one level with release made fast to rear part of trigger axle and having firing bevel at angle of 20 degrees with respect to trigger axle on one side and groove equal in thickness to protrusions of sears and parallel to trigger axle on the other side. Trigger interacting with shoulder on axle and shifter made fast to trigger axle with fixing relative to release are positioned on trigger axle. Through grooves are made in side walls of trigger body in parallel to trigger axle which thickness corresponds to flag of shifter. EFFECT: enhanced reliability and operational safety of grenade thrower. 9 dwg

Description

 The invention relates to military equipment, and specifically to melee weapons - hand grenade launchers and their trigger mechanisms.

 The proposed trigger mechanism with a fuse and firing lock with unlocked weapons is designed for a double-barreled hand grenade launcher with a closed breech, designed to engage underwater saboteurs from the side of the ship, from the cabin of the submarine and from the coastline.

 A known system for hitting underwater saboteurs, which is a direct analogue for the combat use of a grenade launcher with the proposed trigger mechanism. This is a manual single-barrel rocket launcher DP-61 "Duel". However, the “Duel" has a grenade electric start system [1].

 Externally, a double-barreled grenade launcher, for which the proposed trigger mechanism has been developed, resembles a scaled-up shotgun with a vertical block of barrels.

 Known trigger mechanisms of double-barreled guns with a vertical block of trunks. As an analogue of such a mechanism, we consider the trigger mechanism of the IZH-39E gun. See [2] or [3].

 The impact mechanism of the gun is a trigger with separate spring-loaded strikers and release hammers. Kurkov and whispered two - on each trunk. Each trigger has its own cylindrical (helical) mainspring. The trigger in the mechanism is one.

 When the barrel unit is opened through two shoulders, the platoon forces are transmitted to the triggers, the war springs are compressed and the triggers sit on the sear. For a shot, the shooter presses the trigger, and through the intermediate parts the pulling force is transmitted to one of the sear, which, turning on the axis, disengages from the trigger. The trigger, under the action of the mainspring, rotates on its axis and strikes the striker, which strikes the cartridge’s capsule, and a shot occurs.

 As a prototype of the proposed trigger mechanism, the application considers the trigger mechanism described in the patent - see [4] "High-speed strike mechanism for a double-barreled firearm with one trigger". In the drawings to the patent, the design of the striking mechanism of a weapon resembling a double-barreled gun with a vertical block of trunks is presented.

 The design of the proposed trigger mechanism is designed for a grenade launcher, which is also outwardly similar to a double-barreled shotgun with a vertical barrel block of caliber 45 mm, a center distance between the barrels of 60 mm and other design features due to the large dimensions, large mass of the grenade launcher and design features of the shots for it.

 So, with a grenade launcher length of 820 mm, a barrel length of 605 mm and a grenade launcher mass of 10 kg, due to the large mass of the barrel block, the grenade launcher would be difficult to hold by a short bolt when turning the barrel block while unlocking. In addition, the firing of a grenade launcher is carried out by shots FG-45 and SG-45, which do not have an obturating sleeve, and the weapons are obturated by pistons on the bolt entering the chamber of the barrels, which necessitates the translational movement of the bolt during discharge-loading, followed by its rotation.

Therefore, the design solutions of the impact mechanism of the prototype do not allow their use in the proposed trigger mechanism for the following reasons:
- drummers in the prototype mechanism, due to the lack of rebound after the shot, protrude behind the shutter mirror, which is unacceptable when translating forward shots by the shutter because of the danger of breaking the capsule;
- when the capsule of one of the shots is misfired, in the prototype mechanism it is necessary to unlock and “break” the bolt of the weapon for cocking the strikers, during which both cartridges can be extracted;
- the design of the mechanism for turning off the whispers in the prototype cannot be applied in the mechanism of a grenade launcher with the handle extended with the trigger extended forward relative to the shutter;
- the design of the cocking mechanism of the projectiles in the prototype when "breaking" the gun can not be used in a grenade launcher with a translational stroke of the shutter.

 The invention solves the problem of improving the reliability and safety of the operation of a grenade launcher.

This problem is solved by the fact that in the trigger mechanism of a double-barreled grenade launcher, containing drummers with war springs, whispering the cocking mechanism and the trigger device with one trigger, the new one is that the drummers with strikers and stops on their front are placed in split guides and bushings, stops interact with the front ends of the fighting springs located in the bores of the split guides, in the middle part of the shock projections are made to interact with the rear ends of the fighting springs and the ability to move these protrusions in the grooves of the bushings. In the middle part on the strikers, two grooves are made with inertial and combat stops for interacting with the sear, and in the tail part on the strikers there are flats on both sides with collars for abutting the ends of the platoon grooves with a pin fixed in it for interaction with the longitudinal grooves of the cocking lever mounted on the transverse axis at the bottom of the mechanism housing. The sear was placed in the vertical grooves of the hull and has fighting and turning off ledges, and under the fighting ledges in the through vertical hole there are spring-loaded locking locks with cones for interacting with conical nests on the axis of the combat larva. In addition, the whispers were made of different lengths with the aim of placing their switching protrusions on the same level with a switch rigidly fixed in the rear of the descent axis and having a battle bevel on one side at an angle of 20 ^o to the descent axis, and on the other hand, a whisper in the thickness of the protrusions parallel to the descent axis. A trigger is placed on the descent axis, interacting with a step on the axis, and a translator rigidly fixed to the descent axis with fixation relative to the switch, and through the descent housing, through grooves are made in the side walls parallel to the descent axis and the thickness corresponding to the translator’s flag.

The invention is illustrated by drawings where
figure 1 shows a section of the breech of a grenade launcher with a trigger mechanism;
figure 2 - the principle of operation and details of the cocking mechanism;
figure 3 is a section aa of the cocking mechanism;
in FIG. 4 - section of the breech of the grenade launcher with the details of the trigger;
figure 5 is a section bB trigger mechanism;
in FIG. 6 is a view, along arrow B, of the switch and the protruding protrusion of one of the searers;
Fig.7 is a front view of the descent housing and the translator in the shot position and in the fuse position;
in FIG. 8 - section BB along with an unlocked grenade launcher and locked sear;
figure 9 is a section bB with the grenade launcher locked the possibility of a shot from the lower barrel and a locked sear of the upper barrel.

 In the housing 1 of the trigger mechanism there are two strikers 2, the upper and lower, with strikers in the front and stops 3, fixed on the front of each striker. Drummers are placed in split guides 4 with a bore inside each of them for placement of war springs 5. In the middle part of the drummers, grooves are made with inertial and combat stops for interaction with the searers - upper 6 and lower 7.

 In the middle part of the strikers, two protrusions are made opposite each other, the front ends of which are flush with the support sleeves 8 with grooves for moving the protrusions.

 In the rear part of the drummers, flats with collars are made on both sides. The flats are introduced into the grooves of the cock 9, which, acting on the shoulders, cock the drummers before landing on the sear thanks to the cock’s stroke, which, with the pin 10 fixed in it, interacts with the longitudinal grooves of the cocking lever 11, which moves by turning on the axis 12 fixed in the lower part of the housing .

 To turn off the sear, upper and lower, there is a switch 13, rigidly fixed to the axis of the trigger 14, passing through the housing of the trigger 15, which by acting on the ledge on the axis and compressing the return spring 16, has the ability to move the switch.

 The translator 17 is rigidly fixed at the front end of the descent axis, in a position fixed relative to the switch. In the front part of the descent housing 18, through grooves are made in the horizontal plane in the side walls of the housing along the thickness of the translator’s flag.

 The whispering return springs 19 are supported on one side by the whispering protrusions, and on the other hand, on the bearing pads of the latches 20 with guide cylinders for the springs. On the other hand, locking locks are made of a cone for interacting with conical sockets on the axis 21 of the combat larva 22, which is intended to go beyond the fighting stops 23 of the grenade launcher during the locking process. In the locked position of the grenade launcher between the protrusions of the whispers and the cylindrical guides of the locking tabs, a gap is made that does not prevent the whispers from turning off when fired.

 To cock the hammer 2, it is necessary to move the cocking lever 11 back, and the pin 10 fixed in the cock 9 moves along the vertical grooves in the walls of the lever, moving the cock, which, interacting with its grooves on the shoulders of the flats of the hammer 2, removes them from the inertial stops that prevent movement drummers forward when the grenade launcher falls on the trunks, and “puts” the fighting emphasis on the fighting protrusions whispered - upper 6 and lower 7.

 When moving back firing pin 2 their stops 3 go into the bores of the guides 4 and compress the front coil springs 5, cocking the firing pin. At the same time, the fender protrusions on the projectiles, interacting with the rear ends of the combat springs, move backward in the grooves of the bushings 8 by the amount of cocking of the projectiles 2.

To produce a shot, the translator 17 from the lower position "PR", in which he plays the role of a fuse, by turning 90 ^{o is} set by a flag opposite one of the grooves in the descent housing 18, corresponding to a shot from the upper or lower barrel. By pressing the trigger 15, its body, acting on a ledge on the axis of the trigger 14, moves it back, compressing the return spring 16 of the trigger.

 The switch 13, rigidly connected to the descent axis, depending on the setting of the fire sequence from the upper or lower barrel, squeezes the turning protrusion of one of the whispers, the upper sear 6 down, and the lower sear 7 up. The protrusion of the whisper of the non-firing barrel enters the parallel groove of the switch 13, rigidly blocking the firing pin and making it impossible to simultaneously shoot from two barrels.

 The combat ledge of the whisper of the firing barrel disengages from the combat focus of the striker 2, and the combat spring 5 moves the striker forward with the striker, breaking the grenade capsule. When the striker 2 striker exits when it is “tipped” behind the piston mirror, the fender protrusions on the striker exit the grooves of the sleeve 8 beyond its end by the same distance, and the service spring 5, playing the role of a return spring, returns the striker 2 with the striker to “hang up” .

 If the grenade launcher is not locked, the combat larva 22 with locking surfaces does not go beyond the fighting stops 23 of the grenade launcher and the axis 21 of the combat larva squeezes the axes of the locking lock cone 20. The guiding cylinders of the locking locks select the gaps from the conical seats, rigidly locking the whispers and making it impossible firing a shot with an unlocked grenade launcher.

 The trigger mechanism of the described design has passed state tests and is currently transferred to mass production.

Sources of information
1. The magazine "Arms" 6-8, 1998, p. 6, Fig. 13, p. 8.

 2. Blum M.M., Shishkin I.B. "Shotgun". Reference book, "Agropromizdat", M., 1987, p. fifty.

 3. Mikhailov L.E., Izmetinsky N.L. "Izhevsk hunting rifles", "Udmurtia", Izhevsk, 1982, p. 204.

 4. US patent 4380881, F 41 C 27/00, publ. 04/26/83.

Claims (1)

Trigger mechanism of a double-barreled grenade launcher, containing shockers with strikers and with stops on their front, interacting with war springs, whispers, cocking mechanism and trigger device with one trigger placed on the trigger axis, cocking lever mounted on the transverse axis in the lower parts of the mechanism body, locking locks, switch, characterized in that the strikers with strikers are placed in split guides and bushings with grooves, and their stops are in the bores of split guides, in the middle part There were made protrusions with the possibility of moving them in the grooves of the bushings and two grooves with inertial and combat stops for interacting with the sear, in the tail part of the strikers there were flats with flanges on both sides for stopping in the ends of the cocking grooves with a pin fixed in it for interaction with longitudinal cocking lever slots, and the sear located in the vertical housing grooves and have fighting and turning off protrusions, locking locks are spring-loaded, placed under the fighting protrusions, the housing whispered in the through vertical hole and they have cones for interacting with conical nests on the axis of the combat larva, whispers are made of different lengths to place their switching protrusions at the same level with a switch rigidly fixed in the rear of the descent axis and having a battle bevel on one side at an angle of 20 ^o to the descent axis and, on the other hand, a groove equal to the thickness of the turning-off protrusions whispered and parallel to the axis of the descent, the trigger is placed on the axis of the descent with the possibility of interaction with the step of the axis of descent, on the front of which is rigidly closed relative to the switch captured translator and in the housing parallel to the shutter trigger axis through grooves formed in the side walls equal to the thickness of the translator pitch.

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