UA45494C2 - AUTOMATIC - Google Patents

Abstract

This invention is pertinent to hand self-firers. Self-firer has a barrel box (1), in which the shock-release mechanism and stop mechanism are installed. Shock-release mechanism comprises of a hammer (20) and a sear of auto-release with automatic cock (21). Stop mechanism has a rotary breech-mechanism (8) and a breach frame (10) with a rear lug, interacting with the hammer (20). At the barrel box (1) rifle butt (3) is fixed with a hinge, and in the front area – barrel (2) with gas-discharge mechanism. New in the claimed self-firer is the fact that the breach-mechanism frame (10) is made with possibility of interaction with a splay support surface of the barrel box (1). The rear lug has a length excluding the hammer (20) contact with the firing pin (9) at the breach-mechanism frame (10) kick. Rod (12) is installed in the breach-mechanism frame with possibility of restricted turning, for instance, at a threading with a gap. Gas pipe (6) has a lug (17) being in contact with the slot (18) of the sight unit (4) and it is spring-supported in direction of the business end. Sear (21) is made with a plate (23) of automatic cock and the plate (22) of the cock of hand recharge, those provide at hand recharge contact of the breech-mechanism frame (10) and the hammer (20), and at automatic fire – guaranteed gap between those. In the rifle butt, by rigid ribs (30), a housing (31) for a case (32) with equipment is formed, this is closed with a spring-supported rotary cover (34) installed with possibility of contact with a pusher (27) of fixing element (29) for marching position. In the barrel rifled part (2) transition from the rifled area to the bottom is made in two radii, coming to each other, ant a tangent line, which goes normally to the plain through all the barrel channel (2) and the middle of the area. In the barrel (2), in between the conic slant of the area (42) and the rifled part an additional conic area (43) is provided.

Description

Description of the invention

The invention relates to manual firearms and automatic weapons.

The well-known 7.62-mm Kalashnikov AK-47 machine gun (see Guide to shooting. 7.62-mm machine gun

Kalashnikov (AK) - M. "DTSAAF Publishing House", 1969), containing a receiver, a barrel with a chamber and a rifled part, a bolt frame with a bolt, a shock-trigger mechanism with a trigger, a trigger and a self-timer and a simple butt.

The well-known 7.62-mm modernized Kalashnikov assault rifle with an AKMS folding stock (see Guide to 70 marksmanship. 7.62-mm Kalashnikov assault rifle (AKM and AKMS), M. "Military Publishing House of the Ministry of Defense of the USSR", 1971), which taken as a prototype, containing a receiver, a locking mechanism that includes a rotary bolt with a striker, located in a bolt frame mounted on the guides of the receiver and provided with a rear protrusion that interacts with the trigger, a trigger mechanism that includes a trigger and a self-timer sear , a gas removal mechanism with a gas piston, the rod of which is installed in the opening of the shutter 12 frame, a collapsible stock and a barrel with a sight block, which consists of a chamber and a threaded part.

The disadvantages of the specified model are low reliability, failure of the weapon when used in extreme climatic and extreme conditions, low rate of fire, insufficiently high operational characteristics.

The task of the claimed invention is to improve the reliability and operational characteristics of the machine.

To solve the task, an automatic weapon contains a receiver, a locking mechanism, which includes a rotary shutter with a striker, located in a shutter frame mounted on the guides of the receiver and equipped with a rear projection that interacts with the trigger, a trigger mechanism that includes a trigger and a sear a self-timer with a combat bow, a gas removal mechanism with a gas tube and a piston, the rod of which is installed in the hole of the shutter frame, a collapsible stock with locking devices for the combat and retreating positions, and a barrel with a sight pad, which consists of a chamber and a threaded part. with

What is new in the claimed device is that the bolt frame is made with the possibility of interaction in the front Ge) position with the beveled support surface of the receiver; the rear protrusion of the shutter frame has a length that excludes the contact of the trigger with the striker when the shutter frame is rolled back; the rod is installed in the bolt frame with the possibility of limited angular displacement, and the gas tube is provided with a protrusion that contacts the groove of the sight block. M

The gas piston rod is installed in the hole of the bolt frame using a slotted thread. Self-timer trigger Fd) is equipped with a manual reload arch in the form of a platform on the trigger, located at a distance from the movement trajectory of the shutter frame, which ensures contact of the shutter frame with the trigger; the platform of the automatic arch M of the sear is made at a distance from the trajectory of the shutter frame, which provides a gap between the shutter frame and the trigger.

From Inside the stock, stiffeners form a slot for a pencil case with accessories, which is hidden by M spring-loaded rotary cover, installed with the possibility of interaction with the pusher of the trigger of the starting position.

The gas outlet tube is spring-loaded relative to the sight block in the direction of the muzzle. "

In the threaded part of the barrel, the transition from the field to the bottom of the grooves is made in the form of two radii that connect with Z and a tangent located perpendicular to the plane that passes through the axis of the barrel channel c and the middle of the field. An additional conical section is made in the barrel between the conical bevel of the fields and the threaded part

From" length | - (4...6)Й, where Й is the sum of the lengths of the support cone of the chamber and the conical bevel of the fields.

The set of proposed features of the declared automatic weapon significantly increased the reliability and operational characteristics of the sample.

The essence of the invention is explained by the drawings, which show: t- Fig. 1 - general view of automatic weapons; 4! Fig. 2 - view A in fig. 1, shutter frame in the forward position in contact with the protrusion of the receiver;

Fig. C - gas removal mechanism; shk Fig. 4 - cross-section of IM-IM in Fig. WITH; (Te) 20 Fig. 5- the trigger is in contact with the rear projection;

Fig. 6 - the trigger on the arch of the manual reloading of the self-timer whisperer;

T" Fig. 7 - the trigger on the automatic arch of the self-timer whisperer;

Fig. 8 - a plastic example with a receiver in cross-section;

Fig. 9 - an example, a cross-section along IH-IH in fig. 8; 29 Fig. 10 - an example, cross-section along X-X in fig. 8;

GF) Fig. 11 is an example, magnification 0 in fig. 8;

Fig. 12 - barrel in section; about Fig. 13 - the profile of the grooves in the barrel, cross-section along the KhPI-KHIIA in fig. 12;

Fig. 14 - footnote C in fig. 13; and 60 Fig. 15 - footnote M in fig. WITH.

The claimed automatic weapon (Fig. 1) contains a receiver 1, to which a barrel 2 is attached in the front part, and a plastic buttstock 3 is folded in the rear part. A sight block 4 and a gas chamber 5 are installed on the barrel, between which there is a gas tube 6. In the barrel the box (Fig. 4) has a locking mechanism (Fig. 3) installed on the guides 7, which includes a rotary shutter 8 with a striker 9, placed in the shutter frame 10. Because the shutter frame has a protrusion 11; a rod 12 with a piston 13 is fixed in the hole of the shutter frame using a cut with a gap. The shutter frame has a beveled support platform 14 on the side (Fig. 2), a protrusion 15 with a corresponding beveled platform 16 is made on the receiver, the gas tube in the rear part has a protrusion from below 17, which enters the groove 18 of the sight block 4 and is spring-loaded by the spring 19 in the direction of the muzzle. Inside the receiver there is a trigger mechanism (Fig. b), which includes a trigger 20 and a trigger with a sear 21, which has a manual reload cock in the form of a platform 22, and an automatic cock in the form of a platform 23 (Fig. 7). The butt is hingedly attached to the receiver 1 (Fig. 8, 9) using the axis 24

Z. It contains a hollow plastic body 25, a butt 26, a pusher 27 with a protrusion 28, which contacts the retainer 29 of the derived position. Inside the body of the butt, stiffeners ZO (Fig. 10) are made, which 7/0 form a socket 31 for a pencil case 32 with accessories. The pencil case is spring-loaded with a spring 33 and abuts against the rotary cover 34, which with its lower protrusion Z5 (Fig. 11) is in contact with the corresponding protrusion Zb of the push rod 27. The lateral recess 37 (Fig. 9) on the outer surface of the butt is made in the form of a nest under the bar 38 of the night sight, fixed on the receiver 1. In the rear part of the receiver there is a spring-loaded

L-shaped lock of the combat position of the butt.

The barrel 2 of the weapon (Fig. 12) consists of a chamber 40 with a support cone 41 and a threaded part, which consists of a conical bevel of the fields 42, an additional conical section 43 and a cylindrical part 44. The length of the additional conical section I) - (4...6 ) 0 (15 x - 12), where Я is the length of the support cone and | - the length of the conical bevel of the fields.

The threaded part of the barrel is a profile with grooves and fields (fig. 13, 14). The transition between them consists of the section "ar" of radius g 4, the section "bs" of radius g and the part "sa" of the tangent p to the radius g, which forms a right angle with the plane 5 passing through the axis of the bore and the middle of the field; 4; is the diameter of the field, and dr is the diameter of the cut.

Automatic weapons work like this. To load the weapon, it is necessary to move the bolt frame 10 back and sharply release it. When the shutter frame is retracted, it lowers the trigger 20 with its rear projection 11, which rises to the position of the manual reloading mechanism 22 of the sear 21 of the trigger at a distance from the trajectory of the shutter frame, which creates tension "K" between the trigger and the frame during its movement. When the trigger is pressed, a shot is fired, and i) powder gases, acting through the piston 13 with the rod 12 on the bolt frame, throw it back. During the reverse movement of the bolt frame, it again raises the trigger, which, turning, stands on the automatic arch 23, located at a distance from the trajectory of the bolt frame, which creates a gap "I" between the trigger and the bolt frame. Thanks to this, the shutter frame passes freely under the trigger when cocked, without touching it, which ensures higher reliability of operation. When cocking the trigger with the rear protrusion 11, its length is selected in such a way that the trigger never Me comes into contact with the firing pin 9, providing a gap "i" (Fig. 5), and the firing pin, in turn, does not push out "g earlier than necessary, the sleeve from the bolt cup, eliminating the loss of the cartridge case.

Coming to the front position, the shutter frame 10 is beveled at an angle p (Fig. 2) with a support platform 14 o

Зз5 hits the corresponding beveled platform 16 of the protrusion 15 of the receiver. At the same time, the frame shifts to the left "I and is pressed against the left guide 7 of the receiver. The piston 13 of the rod 12 of the breech frame enters the gas chamber 5 and, selecting the gap in the threaded connection with the breech frame, turns to the desired angle, compensating for errors in the installation of the gas chamber on the barrel and eliminating the skew of the breech frame.

When firing a weapon, the gas tube 6, fixed by the protrusion 17 in the groove 18 and spring-loaded by the spring 19

Aim pads 4, does not carry out any inertial movements. шщ с In the process of firing, the bullet at the initial moment hits the fields of the grooves, while the additional conical section 43 contributes to a smoother, uniform impact of the bullet, reducing the specific pressure of the bullet on the fields. This contributes to "" more smooth deformation of the bullet in the shape of the fields and increases the durability of the barrel. The presence of the curved surface of the transition of the fields into the grooves "ars", formed by the radii of r. and go and the rectilinear section "sa" along the tangent, allows you to more completely fill the grooves with the shell of the bullet, eliminating the breakthrough of powder gases and increasing the stability of the initial speed of the bullet.

The plastic case Z has the ability to change from a combat position to a derived one and vice versa. For the i-th transfer of the butt from the derived position to the combat position, it is necessary to press the push rod 27, which protrudes from the "th" hole of the buttplate 26, which, moving in the cavity of the butt body 25, with its projection 28 acts on the latch 29 of the derived position and brings the latch out of engagement with the side wall of the butt 26 of the butt. After that, it is necessary to turn the butt around the axis 24 and set it in the combat position. For translation

To move the butt from the combat position to the derivative position, it is necessary to squeeze the combat position lock 39 and, turning the butt around the axis 24, set it to the derivative position. At the same time, the latch 29 of the retracted position snaps over the side edge of the buttplate 26 and fixes the butt in the retracted position with its tooth. When assembling the butt, the bar 38 for the night sight is located in the recess 37 on the outer surface of the butt. To pull out the pencil case with accessories, it is necessary to press vigorously with your finger on the cover 34 of the back of the head 26, when iF) this the cover will turn and open the hole from the back of the head. The case under the action of the spring 33 will come out of the socket formed by the stiffeners 30 in the cavity 25 of the butt. The spring-loaded cover 34 will return to its original position, while the lower projection 35 of the cover, interacting with the projection 36 on the pusher 27, will shift the pusher to the rear position. This invention fully solves the set technical task: increasing reliability and improving operational characteristics and will be widely used in new models of the Automat design

Kalashnikov" currently being produced (AK 101, AK 102, AK 103, AK 104, AK 105, etc.).

Claims (7)

The formula of the invention b5 1. An automatic weapon that includes a receiver (1), a shock-trigger mechanism that includes a trigger (20) and an automatic trigger sear with an automatic arch (21), a locking mechanism that includes a rotary bolt (8) with a striker (9), located in the shutter frame (10), mounted on the guides (7) of the receiver (1) and provided with a rear protrusion (11) that interacts with the trigger (20), a gas removal mechanism with a gas tube (6) and a piston (13), a rod (12) which is installed in the hole of the bolt frame (10), buttstock (3) and barrel with a sight block (4), consisting of a chamber (40) and a threaded part, which is characterized by the fact that the bolt frame (10) is made with the possibility contacting in the forward position with the beveled surface (16) of the receiver (7); 70, the rear protrusion (11) of the bolt frame (10) is made with a length that excludes the contact of the trigger (20) with the striker (9) when the bolt frame (10) is rolled back, the rod (12) is installed in the bolt frame with the possibility of limited angular displacement, and the gas tube (6) is equipped with a protrusion (17) that contacts the groove (18) of the sight block (4). 2. An automatic weapon according to claim 1, which is characterized by the fact that the rod (12) of the gas piston (13) is installed in the hole of the shutter frame (10) using a slot with a gap. C. An automatic weapon according to claim 1, which is characterized by the fact that the trigger sear (21) is equipped with a manual reloading system in the form of a platform (22) on the sear (21), located at a distance from the trajectory of the bolt frame (10), which ensures contact of the bolt frame (10) with the trigger (20), and the platform of the automatic cocking (23) of the sear (21) is made at a distance from the trajectory of the shutter frame (10), which provides a gap between the shutter frame (10) and the trigger (20). - Automatic weapon according to claim 1, which differs in that the butt is made folding with latches 4 A b 1 idri Z and combat and retreating positions and inside the stock (3) stiffening ribs (ZO) formed a nest (31) for a pencil case (32) with accessories, which is closed by a spring-loaded rotary cover (34), installed with the possibility of interaction with a pusher (27) derivative position lock. 5. An automatic weapon according to claim 1, which is characterized by the fact that the gas tube (6) is spring-loaded relative to the sight pad (4) in the direction of the muzzle. 6. An automatic weapon according to claim 1, which differs in that in the rifled part of the barrel (2) the transition from the field to i) the bottom of the rifles is made in the form of two radii that connect and a tangent located perpendicular to the plane that passes through the axis of the channel and the middle of the field. 7. An automatic weapon according to claim 1, which differs in that an additional conical section of length I is made in the barrel between the conical bevel of the fields (42) and the threaded part; - (4.. 6), where H. is the sum of the lengths of the support cone of the chamber and the conical bevel of the fields (42). Me « IS) « - with . and? sh» 1 sh» Fo c» name) 60 b5