SU366335A1 - PNEUMATIC RIFLE - Google Patents

Description

The invention relates to pneumatic guns, namely the design of its devices, ensuring the exclusion of recoil guns when fired.

Air rifles are known in which, to avoid kickback, a rifle pneumatic system is used that compresses air to shoot bullets. For this purpose, the pneumatic system is made in the form of two pistons and springs in between, placed in a receiver serving as a guide for the pistons and a working cavity for compressed air. When fired, the pistons move in opposite directions under the action of the spring, thereby balancing the recoil force of the guns.

However, in such a rifle the manufacture of a piston system is difficult and time consuming.

The purpose of the invention is to create an air rifle with a more reliable and simple in design pneumatic system, which excludes recoil when shooting.

For this, the pneumatic system of the rifle is made as a separate unit consisting of a movable cylinder placed in the receiver, a piston inserted into the cylinder, and a combat spring between them. The cylinder and the piston, forming a working cavity for compressing air, are able to move under the action of a spring in opposite directions.

FIG. 1 schematically shows an air rifle before arming

frontal.m section; on fng. 2 - the same, when cocked, top view (in section); in fig. 3 - the position of the parts of the rifle before firing.

Air rifle has a barrel /

(Fig. 1), barrel box 2 with pneumatic system 3, box 4, power tool (not shown) and descender 5.

The pneumatic system of a rifle consists of cylinder b, piston 7, guide sleeve 8, spring 9 and sear 10. Cylinder 6 in the front part is equipped with a partition // and sealing device 12 sliding along the shank 13 of the breech breech. The sealing device has a recess 14 (Fig. 2) for connection with a pull 15 of the lever 16 of the cocking mechanism. B of the rear part, the cylinder is closed by a threaded bushing 17 (Fig. 1) and has a longitudinal groove 18 for the protrusion of the firing pin 19 of the trigger mechanism. The piston 7, made in the form of a collar with a cuff, has a rod 20 with a groove 21 and a cone 22 at the end. The guide sleeve 8 in the middle part has a thickening 23, and in the tail part - the ledge 24, which is included in the hollow pipe

25, the butt plate 26 of the receiver box 2. The spring 9 is located on the front of the guide sleeve 8; at one end, the spring rests on the spraying 7, and the other on the thickening 23 of the guide bushing. Shentalo 10, installed in the groove of the thickening 23, is provided with a central hole 27 for the passage of the cone-shaped end 22 of the piston rod and the spring 28 which presses the sear downwards.

Before arming part of the air rifle occupy the following position (Fig. 1). Cylinder 6 is located at a distance of 7-10 mm from the end of the breech bore /, and piston 7 rests against the partition / cylinder. The spring 9 is preloaded between the piston 7 and the thickening 25 of the guide sleeve 8. The threaded sleeve of the cylinder 17 holds the guide sleeve in the cylinder cavity. The rear end of the guide bushing does not reach the butt plate 26 of the receiver. The whisper 10 under the action of the spring 28 is lowered to the lower end position. The protrusion protrusion / 9 of the trigger mechanism is located in the bores of the receiver and in the groove 18 of the cylinder 6.

When cocked (Fig. 2), the cylinder 6 of the 15th lever 16 of the cocking mechanism is first retracted to the extreme position, and then moved to the rifle until utao.ra sealing device 12 to the end of the breech. When the cylinder moves backwards, the rear end of the guide sleeve 8 rests on the butt pad 26, the spring 9 is compressed by the piston 7, and its rod 20 with its tapered end pulls the splinters 10 up. After combining the undercut 21 of the rod with the sear, the latter under the action of the spring 28 (Fig. 1) is lowered down and engages with the rod. At the end of the movement back, the cylinder 6 (fig. 3) acts by the end of its groove 18

on the ledge of the striker 19 and cocks the trigger mechanism 5; the projection of the striker 19 occupies the lowest position opposite the hole in the receiver. When moving

Forward, the cylinder 6 with the threaded sleeve 17 displaces the guide sleeve 8 and the associated piston 7 up to the stop of the ledge 24 of the guide sleeve 8 into the flange of the butt plate 25 of the butt plate 26. At the same time, the pinch 10 is set against the protrusion of the striker 19. is disconnected from the cylinder 6 of the pneumatic system (the disconnection mechanism is not shown in the drawings).

When fired by triggering the trigger 5, his drummer 19 is released. The last one, but the blow to Sentalu 10, moves him upwards. Shepta. I get out of engagement with the rod 20. Released stock

under the action of the fighting spring 9 moves forward and removes the air in the working cavity of the cylinder 6, and the cylinder under the action of the same spring moves in a progivayuschego direction. With such an impact of the moving masses of the pneumatic system, the recoil of the barrel is eliminated when fired.

Subject invention

A pneumatic rifle containing a barrel, a receiver with a pneumatic system, a box, an aiming device and a trigger mechanism, characterized in that, in order to simplify the design and eliminate recoil of the rifle, the pneumatic system in it is presented as a separate unit consisting of a rolling cylinder, a piston in it, and a mainspring between them, with the cylinder and the porsun made moving when fired in opposite directions.

I 12 13 // 2 13