RU2525339C1 - Lockwork - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: automatic gun lockwork comprises sear with trigger, trigger pin, drop-in auto sear fitted in trigger pin, decocking and spring-loaded automatic release trigger, firing spring, trigger pin, spring-loaded automatic release with sear and spring-loaded release pin. Trigger is composed by L-like leer with stepped full cock to interact with spring-loaded U-shape automatic release with its pin arranged between trigger pin and hammer pin.

EFFECT: higher reliability, smaller sizes.

2 dwg

Description

The invention relates to the field of weapons technology and can be used in the design of trigger mechanisms for automatic small arms.

Known trigger mechanism of automatic small arms (description of the invention to the patent of the Russian Federation No. 2074347, IPC F41A 19/00, publ. 02.27.1997) containing a trigger, an axis of the trigger, a trigger with a mainspring and a self-timer. In it, the self-timer is installed on the axis of the trigger, and the mainspring is made with turns, its free ends cover the axis of the trigger, and one of the free ends of the mainspring is installed with the possibility of interaction with the self-timer.

A disadvantage of the known design is the low reliability of the design, due to the location of the mechanism, namely, behind the bolt frame at a large distance from the protrusion of the bolt frame. In this case, the rotation angles of the self-timer whisper are small and, as a result, small overlaps occur between the cocking cock and the self-timer sear, while friction increases, and small contact areas wear out quickly. Therefore, the survivability of the mechanism is reduced and reliability is reduced.

Known trigger mechanism of a small-sized machine, described in the Eurasian patent EA0020 B1, publ. 12/30/1997, selected as the closest analogue. The trigger mechanism is located in the receiver, where it is attached by three interchangeable axes, and consists of a trigger with a mainspring, a trigger moderator with a spring, a trigger, a single-shot whisper with a spring, a self-timer with a spring, a translator and a tubular axis. The trigger has a platoon and a self-timer platoon. The self-timer has a protrusion (a self-timer) to hold the trigger on the self-timer cock and a lever for turning the self-timer. The self-timer sear is made stepwise: the lower stage holds the trigger when it is cocked in the process of loading the machine, and the upper one - when the cock is cocked after firing.

When analyzing the known design, it was revealed that the self-timer is placed on the axis located in front of the axis of rotation of the trigger, which increases the dimensions of the trigger mechanism in the longitudinal direction and in general the mass of the product.

The task of the invention is to reduce the size of the mechanism, reduce the total mass of the product, increase the reliability of the structure.

The technical result consists in the arrangement of the components of the mechanism due to the location of the axis of the self-timer between the axis of the trigger and the axis of the trigger, creating a guaranteed clearance between the trigger and the bolt frame when firing.

The task is achieved in that the trigger mechanism of an automatic weapon consists of a sear with a trigger, an axis of the trigger, a single-shot whisper mounted on the axis of the trigger, a cock with a cocking cock and a self-timer cock, a combat spring, a trigger axis, a spring-loaded self-timer with the sear and the self-timer axis. The trigger is made in the form of a L-shaped lever with a self-timer platoon of a step shape with the possibility of interaction with the self-timer sear, the axis of which is located between the trigger axis and the trigger.

The design of the product is illustrated by drawings, where

- figure 1 shows a side view to the right of the trigger mechanism in the position of the details: trigger self-timer, self-timer lever turned forward, down, self-timer whispered out of contact with the self-timer platoon;

- figure 2 shows a side view of the trigger mechanism in the position of the parts at the time of reloading: the self-timer lever is turned up; self-timer cock on the self-timer sear.

The trigger mechanism of automatic small arms is assembled in a single housing fixed in the receiver 1, a sear 2 with a trigger 3 is mounted on axis 4, a single fire sear is installed on the same axis 4. Trigger 6 is mounted on the trigger axis 7 and contains a fighting cock platoon 8, which has a first self-timer platoon stage 9 and a second self-timer platoon stage 10. The mainspring 11 is also located on the axis 7 of the trigger. The self-timer 12 is made in a U-shape and interacts with the protrusion 13 of the shutter frame 14. The sear 15 of the self-timer 12 interacts with the first stage 9 of the self-timer platoon and the second stage 10 of the self-timer platoon. The self-timer 12 is mounted on the axis 16 and is spring-loaded by the self-timer spring 17. The self-timer 12 interacts with the protrusion 13 of the shutter frame 14 through the lever 18.

To load weapons, it is necessary to take the slide frame 14 back and sharply release it. When the bolt frame 14 is retracted, it pulls the trigger 6, rotates (cockes it), twisting the mainspring 11. In the final cocking phase, the self-timer 15 whispered 12 compresses the self-timer spring 17 until the self-timer 12 whispered 15 and captures the first cocking stage 9 self-timer. When releasing the bolt frame 14, it returns to the front position, and after locking the bore (not shown), continuing to move forward, runs onto the self-timer lever 18. When the self-timer 12 is turned, sear 15 disengages from the first stage 9 of the self-timer platoon.

After the shot, the bolt frame 14 with a higher speed than when manually reloading runs onto the trigger 6. When cocked, the trigger 6 turns the self-timer 12, while having more energy from interacting with the bolt frame 14, it rotates a larger angle, as a result of which 15 the self-timer whispered 12 trigger 6 captures the second stage 10 output self-timer.

When holding the trigger 6 with the sear 15 of the self-timer 12, the slide frame 14 freely passes over the trigger 6, without touching it. The location of the axis 16 of the self-timer between the axis 4 of the trigger and the axis 7 of the trigger creates a guaranteed clearance between the trigger 6 and the bolt frame 14 when firing, while the trigger 6 receives a larger moment of rotation and rotates a greater angle when firing than with manual forced cocking, therefore there is no friction of parts of the mechanism, which increases its reliability.

An optimal arrangement of elements of the trigger mechanism was found, leading to a compact circuit, which reduces the dimensions of the mechanism and at the same time leads to an increase in the operational characteristics of the weapon.

The proposed design of the trigger mechanism was implemented on a prototype automatic weapons and showed ease of use, reducing the size of the mechanism and reducing the total mass of the product.

Claims (1)

The trigger mechanism of an automatic weapon, containing the sear with the trigger, the axis of the trigger, the whisper of a single shot mounted on the axis of the trigger, the trigger with a cocking platoon and a spring-loaded self-timer, the mainspring, the axis of the trigger, a spring-loaded self-timer with a sear and a spring-loaded self-timer axis characterized in that the trigger is made in the form of a L-shaped lever with a stepped combat platoon with the possibility of interaction with a spring-loaded U-shaped self-timer, the axis of which is located ozhena axis between the trigger and the trigger axis.

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