RU2455608C1 - Automatic pistol for cartridge with powder gas cutoff in case - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: automatic pistol comprises a frame, a tube, an open bolt, a return spring with a guide, a firing mechanism, a bolt stop and a magazine. The frame in the rear part is arranged with guide ledges for interaction with response slots in the bolt. The tube comprises a front fixed and a rear movable parts. In the first part of the frame there are slots and a window for interaction with a guide ledge of the bolt. In the front part of the frame there is a slot to fix a guide return spring. In the middle part of the frame there is a ledge to stop the bolt in the end of recoil. In the upper part of the bolt there is a longitudinal channel to place a guide with a return spring. A rear sight is installed in the upper part of the bolt. The rear sight protrudes into a channel cavity, and there is a flange on the guide for interaction with the rear sight.

EFFECT: design simplification; reliability and operational parameters enhancement.

9 dwg

Description

The invention relates to the field of small arms, designed for silent, flameless and smokeless firing, in particular for self-loading pistols under a cartridge with a cut-off of powder gases, in which the return spring is located above the barrel.

The closest in technical solution to the proposed invention is a self-loading pistol according to the patent of the Russian Federation No. 2072076, IPC F41C 3/00. This gun contains a frame, a free shutter, bolt delay, a barrel consisting of a fixed front part and a rear movable part (movable chamber). The shutter has a channel for accommodating the guide and return spring. Mounting the bolt on the gun is a latch. The direction of the shutter during movement is carried out along the protrusions in the rear of the frame and the guide return spring, which interacts with the latch with its front part. The shutter stops in the rear position when it hits a protrusion in the upper part of the chamber. To remove the shutter from the frame, you must pull the lock forward before removing it from the barrel and turn sideways. Then raise the front of the shutter above the protrusion of the chamber and, sliding back, remove the shutter. To protect against accidental departure of the guide and the return spring to the side of the arrow, a stop is inserted in the shutter channel.

The above construction has several disadvantages. The first is the availability of auxiliary parts for attaching the shutter and eliminating the accidental departure of the guide (latch, limiter). The second - a large number of parts involved in the direction of the shutter (frame, guide, retainer, barrel) and requiring high precision manufacturing and relative positioning. Third, the need to further strengthen the chamber to accommodate the protrusion to stop the shutter.

The objective of the invention is to develop a pistol design for a cartridge with a cutoff of the powder gases in the sleeve, having a simple design, high reliability, with improved performance by eliminating the above disadvantages.

To achieve the task in a self-loading pistol for a cartridge with a cutoff of powder gases in a sleeve containing a frame, a barrel consisting of a front fixed and a rear movable part, a free bolt, a return spring with a guide, a trigger mechanism, a slide delay and a magazine, a frame in the rear part is made with guide protrusions for interacting with mating grooves in the shutter. In the front of the frame there are grooves and a window for interacting with the shutter guide, in addition, in the front of the frame there is a slot for attaching the return spring guide. A ledge is made in the middle part of the frame to stop the shutter at the end of the rollback, while a longitudinal channel is made in the upper part of the shutter to accommodate the guide with a return spring and a pillar protruding into the channel cavity is placed, and there is a flange on the guide to interact with the whole.

Thanks to this design, the gun becomes much more technologically advanced, since its manufacture is greatly simplified - there is no need for high precision manufacturing and relative positioning of parts, the number of auxiliary parts is reduced, and disassembly and assembly of the gun is greatly simplified.

Figure 1 is a diagram of the proposed gun, side view; figure 2 is a front view; figure 3-6 presents the details of the gun in sections aa, bb, bb and gd, figure 7-9 schematically shows the process of disassembling the gun.

The gun contains a frame 1, a shutter 2, a barrel 3, a movable chamber 4, a guide 5, a return spring 6, a rear sight 7.

The guide 5 has a flange 8 with a flat in the back for interaction with the lower part of the rear sight and a flange 9 to prevent improper assembly of the guide with the shutter.

For fastening and direction of the shutter 2, the frame 1 in the rear part has guide protrusions 10 (Figs. 1, 5) with flats cut at an angle, and in the front part there are guide grooves 11 with a window 12 (Figs. 1, 6). Also, in the front of the frame there is a slot 15 (FIGS. 1, 2) for fastening the return spring guide. In the middle part of the frame, a step 17 is made to stop the shutter at the end of the rollback.

The shutter 2 has for the direction in the frame of the grooves 16 (figure 5) in the rear and a guide protrusion 13 (figure 3) in the front. In the upper part of the shutter has a channel 18 for accommodating the guide 5 and the return spring 6. Also in the upper part of the shutter is located the rear pillar 7 so that its lower part extends into the channel 18, thereby forming a protrusion for interaction with the flange 8.

In front of the guide 5 has two flats 14 for fixing it in the slot 15 of the frame.

The process of removing the shutter from the frame is shown in Fig.7-9. To disassemble the gun, it is necessary to slide the shutter a little back so that the guide protrusion of the shutter 13 coincides with the window 12 in the frame (Fig.7). Then slide the guide 5 forward so that its front part disengages from the slot 15 in the frame. In this position, it is necessary to raise the front of the shutter and, sliding it back, remove from the frame (Fig. 8). To remove the return spring and the guide from the shutter, it is necessary to rotate the guide around its axis by 180 ° so that the flange 8 disengages from the whole 7 and remove the parts from the shutter channel (Fig. 9)

Claims (1)

A self-loading pistol for a cartridge with a cut-off of powder gases in a sleeve containing a frame, a barrel, a movable chamber, a free bolt, in the longitudinal channel of which there is a return spring with a guide, a trigger mechanism, a slide delay and a magazine, characterized in that the frame is in the back made with guiding protrusions for interacting with mating slots in the shutter, grooves and a window for interacting with the guiding protrusion of the shutter are made in the front of the frame, in addition, there is a slot in the front of the frame for fastening the return spring guide, and a ledge is made in the middle part of the frame to stop the shutter at the end of the rollback, while at the top of the shutter there is a pillar protruding into the channel cavity, and on the guide there is a flange for interacting with the whole.

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