RU2387942C1 - Fire-arm - Google Patents

Abstract

FIELD: weapons.

SUBSTANCE: invention relates to small arms and can be used in sniper, sporting and hunting guns. Proposed gun comprises breech frame with lock and trigger mechanism arranged in said breech frame. Trigger mechanism comprises spring-loaded hammer baffles with hammer, sear representing a bell crank with its front arm provided with a tooth to interact with cock. Trigger lever is arranged below aforesaid sear and has fire ledges mating sear slots. Anchor is fitted on sear axle to interact with cock and trigger lower arm. Safety lock is fitted on axle at the breech house center and represents a bell crank. The latter has one arm arranged on breech-bloc way, while L-like latch made on second arm is arranged behind the trigger to prevent its turn. Inertial safety lock is fitted on the axle inside breech frame to prevent trigger turn at axial inertial load. Trigger actuation force and its stroke can be adjusted.

EFFECT: higher safety.

4 cl, 7 dwg

Description

The invention relates to the field of weapons technology and can be used in sniper and sporting and hunting weapons.

A known design of small arms containing a receiver with a bolt and a return spring, a trigger mechanism consisting of a sear installed in the receiver on the axis of the sear with a response cock cocking bolt supporting surface offset from the axis of the sear, spring-loaded stop stop and installed with the possibility of interaction with it trigger lever.

Under the sear, the sear stop is connected, connected with the trigger lever and moving reciprocally with each shot when interacting with the ratchet mechanism. The ratchet mechanism is driven by a rolling bolt frame [1].

The disadvantages of this design are:

- the complexity of the design due to the presence of a ratchet mechanism consisting of a large number of parts;

- significant jamming of the stop whispered, which necessitates the existence of special mechanisms for controlling the firing, for example, an electric trigger interacting with the trigger lever;

The above disadvantages reduce the overall reliability of the weapon.

Known small arms containing a receiver with a barrel, a bolt with a bolt, a trigger mechanism containing a spring-loaded trigger with a cocking, a sear, made in the form of a two-shouldered rocker arm, on the front shoulder of which is made a tooth interacting with the combat whispered, interacting with the battle cocking the trigger, and on the back shoulder, a protrusion with the possibility of interaction with the lower plane of the trigger in the final phase of cocking, a two-armed trigger, kinematically connected with the trigger, and a magazine [2].

The disadvantages of the above design is the lack of safety devices that exclude the possibility of unauthorized shots, both with inertial axial loads and by accidentally pulling the trigger.

The aim of the invention is to ensure the reliability of the operation of weapons.

This goal is achieved by the fact that in small arms containing a receiver with a barrel, a bolt frame with a bolt, a trigger mechanism containing a spring-loaded trigger with a cocking platoon, a sear, made in the form of a two-shouldered rocker arm, on the front shoulder of which is offset from the axis of rotation whispered a tooth interacting with a cocking cock, and on the back shoulder a protrusion with the possibility of interaction with the lower plane of the cock in the final phase of cocking, a two-arm trigger, kinematically connected with the trigger yakov hook and store:

- details of the trigger mechanism are placed in a single housing, mounted in the receiver;

- on the axis of the sear, an anchor is freely installed with the possibility of interaction with the trigger in the final phase of its cocking and with the shoulder of the trigger lever with the rotation of the latter fully placed in the housing;

- on the second shoulder of the trigger lever, side stops are made that respond to the combat platoon on the sear;

In the middle part of the body on the axis of the fuse is installed, made in the form of a two-shouldered lever, one shoulder of which is in the “P” position - the fuse is placed on the way the shutter moves, and the “G” -shaped hook made on the second shoulder is placed behind the trigger lever, preventing its turn;

- a spring-loaded inertial fuse is mounted on the axis at the rear wall of the housing with the possibility of its rotation under axial inertial load and interaction with the lower arm of the trigger lever.

The foregoing is illustrated by drawings, where:

- figure 1 shows a longitudinal section on the details of automation and the trigger mechanism;

- figure 2 shows a right view of the details of the trigger mechanism, the trigger is pulled;

- figure 3 shows a left view of the details of the trigger mechanism, cocked and put on the fuse;

- Fig. 4 shows a left view of a trigger mechanism detail, the trigger is pulled, the fuse is in the “O” position — fire;

- figure 5 shows the position of the inertial fuse in the locked position of the trigger lever under inertial load;

- figure 6 shows a screw that controls the magnitude of the stroke of the trigger;

- Fig.7 shows a screw that regulates the trigger pull on the trigger.

The small arms comprise a receiver 1 with a barrel 2, a bolt frame 3 with a bolt 4, a trigger mechanism and a magazine 5. Details of the trigger mechanism are located in a single housing 6, in which the trigger 8 with a trigger spring 9 and a spring 9 are placed trigger 10 with a platoon 11. On the axis 12 in the case is installed a sear 13 made in the form of a two-shouldered rocker arm, on the front shoulder of which a tooth 14 displaced from the axis of rotation is made, interacting with the cocking 11 of the trigger 10, and on the rear shoulder a protrusion of 15 sec the ability to interact with bottom plane of the trigger 16 in the final phase of cocking. Under the sear in the case there is a two-shouldered trigger lever 17, through a rod 18 kinematically connected with the trigger 19. The anchor 20 is freely mounted on the axis of the sear; housed in the case. On the second shoulder 23 of the trigger lever, combat stops 24 are made, responding to the cocking platoon 25 on the sear 13. In the middle part of the body, on the axis 26 (fuse axis with a flag not shown in the drawing), fuse 27 is installed, one shoulder 28 of which is in position “P” - the fuse is located on the path of movement of the bolt frame 4, and the "G" -shaped hook 29, made on the second shoulder 30, is placed behind the trigger lever, preventing it from turning. An inertial fuse 33 is mounted on the axis 31 at the rear wall of the housing on the axis 31. In the rebound of the trigger 8 there is a groove for accommodating the trigger and protrusions 34 for interacting with the skeleton 35 of the slide frame. An emphasis 22 mounted in the housing and restricting the rotation of the trigger lever towards the sear is movable, for example, in the form of an adjusting screw. The combat spring 9 is mounted on the trunnion trunnions. Its loop rests on the trigger of the trigger, and the ends of the spring are placed in the slots made in the walls of the holes supported by the adjusting screws 37.

Before firing, the details and mechanisms of small arms occupy the following position. The cartridge is in the chamber, the shutter 4 is locked. The trigger 10 is cocked, its combat platoon 11 is meshed with the tooth 14 on the sear. The combat stops 24 on the shoulder 23 of the trigger lever 17 are located under the cocking platoon 25 of the sear 13 and hold the latter from turning under the action of the combat spring. The fuse 27 is in the "O" position - the fire and its "G" -shaped hook does not interfere with the rotation of the trigger lever 17. The inertial fuse 33, under the action of the spring 32, is pressed against the rear wall of the housing 6 of the trigger mechanism. The trigger 19 is in its extreme forward position.

When you press the trigger 19, the rod 18 connected with the trigger lever 17 rotates the latter and its combat stops 24 disengage from the cocking 25 on the sear 13. The impact of the mainspring 9 on the release of the trigger 8 and the trigger 10 is transmitted through the side cocking of the trigger 11 on the tooth whispered 14, and since the latter is offset from the axis of rotation of the sear, the resulting moment turns the sear, releasing the trigger. The release of the trigger together with the trigger rotates in the direction towards the back of the shutter body until the protrusions 34 of the trigger hang of the shutter body. Then the trigger continues to move by inertia until it hits the hammer 38. A shot is fired.

To reload, it is necessary to move the shutter to the rear position behind the reload handle. When moving backward the skeleton 35 of the shutter 4 with its bevel 39 cockes the trigger 10. In the final phase of cocking, the lower plane of the trigger 16, interacting with the protrusion 15 on the back shoulder, whispered 13, turns it around and, after acting on the anchor 20, the latter unfolds the trigger lever. The combat platoon 25 of the sear 13 sits on the fighting stops 24 of the trigger lever, and the cocking cock of the trigger 11 on the tooth 14 whispered 13. When the bolt frame moves with the bolt forward, the cartridge is sent to the chamber and the barrel bore is locked by the bolt. When you press the trigger, the cycle repeats.

In the absence of the need for firing, the fuse 27 is translated into position “P” - the fuse, its shoulder 28 is placed on the path of movement of the shutter, and the “G” -shaped hook 29, made on the second shoulder behind the trigger lever, prevents it from turning. The inertial fuse 33 when an axial inertial load occurs is deployed and blocks the possibility of rotation of the trigger lever. Adjusting screws 22 and 37 allow you to adjust the magnitude of the stroke of the trigger and the pulling force.

The proposed technical solution is implemented in a prototype small arms and tested with positive results. It allowed to ensure the safe operation of weapons.

Information sources

1. Swiss patent No. 402670, cl. 72h 1/02, 1961

2. Patent RU No. 21114367, IPC 6 F41A 19/17, publ. 06/27/98, BI No. 18.

Claims (4)

1. Small arms containing a receiver with a barrel, a bolt frame with a bolt, a trigger mechanism containing a spring-loaded trigger with a cocking platoon, a whisper made in the form of a two-shouldered rocker arm, on the front shoulder of which a tooth interacting with the whispered axis of interaction, interacting with trigger cock, and on the back shoulder - a protrusion with the ability to interact with the lower plane of the trigger in the final phase of cocking, a two-armed trigger, kinematically connected with the trigger, and a magazine, different the fact that the details of the trigger mechanism are placed in a single housing fixed in the receiver, the anchor is freely mounted on the axis of the sear with the possibility of interaction with the trigger in the final phase of cocking and the trigger lever with the latter turning until it stops, placed in the housing, on the second the shoulder of the trigger lever made combat stops responding to a cocking platoon on the sear, in the middle part of the body on the axis there is a fuse made in the form of a two-shouldered lever, one shoulder of which in position “P” is a fuse placed on the path of movement of the shutter, and the L-shaped hook made on the second shoulder is placed behind the trigger lever, preventing it from turning, a spring-loaded inertial fuse is mounted on the rear wall of the housing with the possibility of its rotation under axial inertial load and interaction with the lower trigger arm lever. 2. Small arms according to claim 1, characterized in that on the axis of the trigger there is a trigger for the trigger with a groove for placing the lower part of the trigger and protrusions for interacting with the bolt skeleton in the final phase of the trigger rotation until it interacts with the hammer in the bolt. 3. Small arms according to claim 1, characterized in that the emphasis restricting the rotation of the trigger lever in the direction to the sear is movable with the possibility of changing the engagement of the trigger guns of the trigger lever with a battle platoon. 4. Small arms according to claim 1, characterized in that the ends of the mainspring are placed in slots made in the walls of the holes, relying on adjusting screws with the possibility of changing the magnitude of the tightened mainspring.

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