RU99605U1 - SELF-LOADED AIR ROTOR RELOADING DEVICE - Google Patents

Abstract

 1. The reloading device of a self-loading air rifle, comprising a housing with a channel for supplying charges, a trigger mechanism with a spring-loaded striker and a trigger, a gas valve with a pusher interacting with the striker, a bolt with a cocking lever, a charge recharger connected to the bolt and installed in the inlet the barrel bore of an air rifle, a power cylinder with a piston connected to the thrust, while the over-piston cavity of the power cylinder is in communication with a gas chamber located at the cut of the channel the barrel of an air rifle, characterized in that it is equipped with a shutter locking mechanism, driven by a rod connected to the piston of the power cylinder. ! 2. The device according to claim 1, characterized in that the shutter locking mechanism is made in the form of a rotated cocking lever, equipped with a position lock, while the axis of rotation of the cocking lever is connected to the shutter. ! 3. The device according to claim 3, characterized in that the position lock is made in the form of a strap connected to the cocking lever, and a protrusion is formed on the opposite surface of the housing, while on the surface of the cocking lever there is a guide surface in contact with the end surface of the rod, and a groove made with the possibility of contact with the end surface of the rod outside the guide surface, while on the end of the strip formed protrusion made with the possibility of contact with the protrusion of the housing, and between the shutter and the spring is installed on the side of the contacting surfaces of the protrusions of the strip and the body. ! 4. The device according to claim 1, characterized in that it further comprises

Description

The utility model relates to self-loading air guns and can be used in multi-shot air rifles used for amateur shooting and sports.

Known multi-charged air rifles with a manual reloading mechanism and an element for locking the shutter in the form of a wedge mechanism (see, for example, US patent No. 3810455, IPC: F41B 11/00, published on 05/14/1974). Such airguns have high accuracy and accuracy of fire, however, such rifles do not provide a self-loading function, which significantly reduces the rate of fire.

Currently, for amateur shooting and sports are widely used automatic air rifles with a tank - high pressure for storing compressed gas. For example, the Russian utility model certificate No. 16544Ш (IPC: F41B 11/00, F41B 11/02, published January 10, 2001) describes the design of a gas-filled pneumatic assault rifle that provides high firing rates when using the entire store supply. The pneumatic machine contains a mechanism for reloading with a movable shutter. When the bolt is cocked by its handle, the engagement of the protrusion on its surface and whispers occurs. Due to the movement of the pusher under the action of a straightening compression spring, the shutter larva rotates to align with the channel of the store, and the charge is supplied to the shutter larva channel. When you press the trigger, the sear will release the combat protrusion of the shutter, which begins to move, putting pressure on the pusher. The shutter larva rotates to align its channel with the bore. At the moment of impact of the striker against the valve shank, compressed gas is released through the outlet opening connecting the central channel of the shutter and the chamber of the valve device. Part of the gas flow exerts pressure on the charge located in the gate channel. Another part of the compressed gas exerts pressure on the shutter itself, which moves in the opposite direction with respect to the charge, blocking the gas channel opening and releasing the shutter larva. When the shutter recoils, the compressed gas is released from the shutter chamber, after which the full cycle of the shot is repeated. This sequence of actions provides an automatic firing process. It should be noted that the reloading process in the known air rifle is carried out by spending part of the compressed gas from the tank. The consumed part of the compressed gas is not used to accelerate the charge in the barrel. In addition, accuracy and accuracy of shooting is reduced due to the movement of the shutter at the time of the shot.

The closest analogue to the patented utility model is the reloading mechanism of a self-loading air rifle, the design of which is disclosed in European patent EP 1729082 B1 (IPC: F41B 11/06, F41B 11/32, published September 17, 2008). The device comprises a trigger associated with a sear with a protrusion made on the surface of a spring-loaded striker. The valve of the device communicates the barrel of the rifle with a gas cavity filled with compressed gas. The valve disc pusher interacts with the trigger drummer. The bolt of an air rifle is freely movable and is connected through a spring-loaded pusher with a hammer. The charge rammer is rigidly connected to the shutter. A gas chamber is installed at the cut of the rifle barrel, which is communicated through a tube with a power cylinder, in which a piston is placed mechanically connected by means of a rod to the trigger of the trigger mechanism.

The design of the known air rifle allows you to fully use the energy of compressed gas to accelerate the charge in the bore. Partially expanded gas at the cut of the barrel is transferred to the power cylinder, with the help of which the shutter is cocked for the next shot. Accuracy and accuracy of firing increases due to the fact that the shutter is moved after the charge leaves the barrel. However, the known reloading device does not exclude the possibility of moving the rammer together with the shutter under the action of compressed gas supplied to the barrel through the valve when the trigger is pulled.

The utility model is aimed at eliminating the mobility of the air rifle bolt from the moment the trigger is pressed until the charge exits the barrel. The solution to this technical problem will significantly improve the accuracy and accuracy of fire with the effective consumption of compressed gas.

This technical result is achieved using a reloading device of a self-loading air rifle equipped with a shutter locking mechanism. The device includes the following elements: a housing with a channel for supplying charges, a trigger mechanism with a spring-loaded striker connected to the trigger mechanism, a gas valve with a pusher interacting with the striker, a bolt with a cocking lever, a charge recharger connected to the bolt and installed in the inlet the bore of the barrel of an air rifle, and a power cylinder with a piston connected to the rod. The over-piston cavity of the power cylinder is in communication with a gas chamber located on a section of the barrel bore of an air rifle. The reloading device of a self-loading air rifle is additionally equipped with a shutter locking mechanism, driven by a rod connected to the piston of the power cylinder.

The presence of a locking mechanism ensures the immobility of the shutter from the moment it is cocked until the charge leaves the bore of the air rifle. This feature of the patented device characterizes its difference from the known devices of automatic reloading with a free shutter. Due to the exclusion of the possibility of moving the shutter under the action of high pressure of the compressed gas during the movement of the charge in the barrel channel, the accuracy and accuracy of firing significantly increases.

The shutter locking mechanism can be made in the form of a rotated cocking lever equipped with a position lock, while the axis of rotation of the cocking lever is rigidly connected to the shutter. To simplify the design of the device, the position lock can be made in the form of a strap connected to the cocking lever. In this embodiment, the design of the device on the opposite (with respect to the bar) surface of the housing is a ledge. A guide surface is created on the surface of the cocking lever in contact with the end surface of the thrust. On this surface of the cocking lever there is also a groove made with the possibility of contact with the end surface of the rod outside the guide surface. A protrusion is formed on the end of the strip, which is configured to contact the protrusion of the housing. To return the strap to a fixed position after depressurizing the cylinder above the piston cavity, a spring is installed between the valve and the strap on the side of the contacting surfaces of the protrusions of the strap and the housing.

In a preferred embodiment, the device includes a removable magazine for feeding charges into the bore. The channel of the store is combined with the channel of the case for supplying charges.

Next, the utility model is illustrated by a description of a specific example of the implementation of the utility model. In this example, the design of the reloading device of a self-loading air rifle uses a shutter locking mechanism made in the form of a rotated cocking lever. The lock position lock has the form of a bar with a guide surface and grooves. The accompanying explanatory drawings show the following:

figure 1 - schematic section of the device in a vertical plane (in the plane of placement of the trigger) in the initial position until the first cocking of the shutter;

figure 2 - schematic section of the device in the horizontal plane (in the plane of placement of the cocking lever) in the initial position until the first cocking of the shutter;

figure 3 is a schematic section of a device in a horizontal plane at the time of starting cocking the shutter;

figure 4 is a schematic section of the device in a horizontal plane at the first stage of cocking the shutter (supply of charge from the store to the barrel);

figure 5 is a schematic section of a device in a vertical plane at the first stage of cocking the shutter (supply of charge from the store to the barrel);

in Fig.6 is a schematic section of the device in the horizontal plane after the second stage of cocking the shutter (the charge is transferred to the compressed gas supply chamber);

Fig.7 is a schematic section of a device in a vertical plane after the second stage of cocking the shutter (the charge is transferred to the compressed gas supply chamber);

on Fig is a schematic section of a device in a vertical plane at the time of the shot;

figure 9 is a schematic section of a device in the horizontal plane at the time of the shot;

figure 10 is a schematic section of a device in a vertical plane at the first stage of automatic cocking of the shutter.

The reloading device of a self-loading air rifle includes a housing 1 with a channel 2 for supplying charges 3 to the barrel bore 4 of an air rifle (see figure 1 of the drawings). A removable drum-type magazine 5 is installed in channel 2, in which charges 3 move in the direction of the bore 4. The device also includes a trigger 6 with a trigger 7 and a hammer 8. Between the hammer 8 and the housing 1, a combat spring 9 is installed. In the chamber 10, in which the striker 8 is moving, a movable pusher 11 of the gas valve 12 is placed. The pusher 11 is mounted to interact with the end surface of the striker 9. The gas valve 12 is connected to the pusher 11 and is in communication with the pressure tank 13, filled with compressed gas through a perforated wall 14. A spring 15 is installed between the gas valve plate 12 and the perforated wall 14. The gas cavity under the valve seat 12 is in communication with the bore 4 through the gas channel 16. The outlet 17 of the gas channel 16 is located behind the channel 2, through which charges 3 enter the bore 4.

The structure of the device includes a movable shutter 18, to which a rammer 19 is located, located in the bore of the barrel 4. On the side cylindrical surface of the shutter 18 there is a protrusion 20 in contact with the opposite surface of the hammer 8. Between the rear end surface of the shutter 18 and the housing 1 there is a return spring 21 Coaxial to the barrel of the air rifle is a power cylinder 22 with a piston 23 moving along the barrel 4. Between the back of the piston 23 and the housing 1, a return piston is installed in the piston space dinner 24. In the initial state, the return spring 24 provides the position of the piston 23 near the cut of the bore 4. Over the piston 23 in the housing 1 is formed a gas chamber 25 with an outlet 26.

The cocking lever 27 of the shutter 18 is rotatable relative to the axis 28, which is rigidly connected to the shutter 18, and is equipped with a position lock (see figure 2 of the drawings). In the considered embodiment of the device, the cocking lever 27 together with the position lock form a shutter locking mechanism. According to an example of the construction of the device shown in figures 1-10 of the drawings, the latch position of the shutter has the shape of a strap 29, which is connected to the cocking lever 27. Between the strap 29 and the opposite surface of the shutter 18, a spring 30 is installed. On the surface of the housing 1 facing the strap 29, a protrusion 31 is formed.

The piston 23 is connected to the locking mechanism of the shutter by means of a movable rod 32. One end part of the rod 32 is connected to the piston 23, and the opposite end part is in contact with the cocking lever 27. On the surface of the cocking lever 27 there is a guide surface 33 in contact with the end surface of the rod 32 A groove 34 is formed on the same surface of the cocking lever 27, which is configured to contact the end surface of the rod 32 outside the guide surface 33. A protrusion 35 is formed on the end of the bar 29, which made with the possibility of contact with the protrusion 31 of the housing 1. The spring 30 is placed relative to the axis 28 of rotation of the cocking lever 27 from the contact surfaces of the groove 35 and the protrusion 31.

The operation of the reloading device of a self-loading air rifle shown in figures 1-10 of the drawings is as follows.

In the initial position of the shutter 18, before its first cocking (see FIGS. 1 and 2 of the drawings), the self-loading air rifle is equipped with a high-pressure tank 13 filled with compressed air at an initial operating pressure of ~ 30 MPa, and a removable magazine 5 with charges 3. Channel store 5 is combined with the channel 2 of the housing 1, designed to supply charges 3 to the barrel 4.

The drummer 8 is in the chamber 10 in the extreme right position, in contact with the valve follower 11. The gas valve plate 12 blocks the gas channel 16 through the compressed gas pressure and spring force 15, through which the compressed gas is supplied from the high pressure tank 13 to the barrel channel 4. The shutter 18 is in a fixed position using the shutter locking mechanism. As the lock position of the shutter, a plate 29 is used, connected with a cocking lever 27 rotated about an axis 28. The position of the plate 29 is fixed by a spring 30, which presses the plate 29 against the opposite surface of the housing 1. Due to the force of the spring 30, the protrusion 35 of the strip engages with the protrusion 31 case, as a result of which the shutter 18 is locked, and rammer 19 can not move in the bore 4.

At the moment of the first cocking of the shutter (see FIG. 3 of the drawings), a force F is applied to the cocking lever 27, under which the cocking lever 27 and the strap 29 connected to it rotate relative to the axis 28. As a result of the rotation of the strap 29, the protrusion 35 disengages from the protrusion 31. Further, in the first cocking stage, the shutter 18 under the influence of the cocking force F moves to the extreme left position (see figure 4 of the drawings). The cocking force F is transmitted through the protrusion 20, made on the surface of the shutter 18, to the hammer 8, cocking the trigger 6 (see figure 5 of the drawings). When displaced along with the shutter 18 of the rammer 19, the channel 2 for supplying charges opens, and the charge 3 is ejected from the magazine 5 into the barrel channel 4 (see FIGS. 4 and 5 of the drawings).

At the second cocking stage, the shutter 18, under the action of the compression force of the return spring 21, moves in the opposite direction (to the barrel 4) until the position of the shutter 18 is fixed, when the protrusion 35 engages with the protrusion 31 under the action of the spring force 30. Moreover, together with the shutter 18 the rammer 19 also moves, pushing the charge 3 in the bore 4 beyond the outlet 17 of the gas channel 16 (see Fig.6 and 7 of the drawings). In the initial state, after the first cocking of the shutter, a compressed gas supply chamber is formed between the back of the charge 3 and the end part of the recharger 19, which is connected through the closed gas valve 12 to the high pressure tank 13. A significant difference between the reloading device of a self-loading air rifle is that, after preparing for the shot, the shutter 18 is locked (stationary) using the locking mechanism. The lock position of the shutter 18 due to the engagement of the strap 29 in the housing 1 prevents the shutter 18 from moving away from the bore of the barrel 4. At the same time, from the cocking lever 27, the guide surface 33 is in contact with the opposite end surface of the rod 32 connected to the piston 23 of the power cylinder 22.

When you press the trigger 7, the trigger 6 is triggered. The trigger of the trigger releases the hammer 8, which, under the action of the force of the mainspring 9, moves in the chamber 10 towards the pusher 11 (see Fig. 8 drawings). When the end part of the striker 8 hits the end of the pusher 11, the gas valve 12 briefly opens, and a portion of compressed air enters from the pressure vessel 13 through the perforated wall 14 and the gas channel 16 into the gas chamber of the barrel 4 (between the end part of the rammer 19 and the rear part charge 3). Due to the pressure differential between the compressed air pressure and the ambient pressure, charge 3 is accelerated in the bore 4 to a predetermined speed. After the shot, the gas valve 12 closes under the action of the compression force of the return spring 15. The accelerated charge 3 after exiting the bore 4 passes through the gas chamber 25 located behind the cut of the bore 4 and flies out from the outlet 26 of the air rifle.

When the charge 3 exits the bore 4, the partially expanded compressed gas enters the gas chamber 25 and the shutter 18 is automatically cocked. Under the action of the compressed gas pressure, the piston 23 begins to move to the left, compressing the return spring 24. Together with the piston 23, the connected to it also moves rod 32. When the end part of the rod 32 moves along the guide surface 33, the cocking lever 27 together with the bar 29 rotates about the axis 28 (see Fig. 9 of the drawings). Outside the guide surface 33, the end part of the rod 32 is fixed in the groove 34. After compression of the spring 30 and fixing the angular position of the cocking lever 27 under the action of the force transmitted by the rod 32, the shutter 18 is moved forward to the leftmost position.

The thrust force 32 is also transmitted to the hammer 8 using the protrusion 20 on the surface of the shutter 18. When the hammer 8 is displaced in the direction from the pusher 11, the trigger 6 is cocked (see FIG. 10 of the drawings). As a result of the discharge of compressed air from the gas chamber 25 through the outlet 26, the piston 23 moves to its original position under the action of the force of the return spring 24. After this, the following operations are repeated in cyclic mode: feeding and recharging the charge 3 into the bore 4, locking the shutter 18, operating trigger 6 when you press the trigger 7, the shot and the automatic cocking of the shutter 18 in conjunction with the trigger 6.

During the reloading cycle, from the moment the charge is transferred to the barrel until the charge leaves the bore 4, the shutter 18 remains stationary and is locked using the locking mechanism. The moment of unlocking the shutter is synchronized with the moment charge 3 leaves the bore 4. This feature of the reloading device as part of a self-loading air rifle determines high accuracy and accuracy of fire.

It should be noted that the above-described example of the design of the reloading device is the simplest constructive solution and does not exclude other more complex forms of construction of the shutter locking mechanism and, in particular, the shutter latch. As a removable store can be used not only drum shops, but also linear stores. The reloading device can be used as part of various designs of self-loading air rifles.

Claims (4)

1. The reloading device of a self-loading air rifle, comprising a housing with a channel for supplying charges, a trigger mechanism with a spring-loaded striker and a trigger, a gas valve with a pusher interacting with the striker, a bolt with a cocking lever, a charge recharger connected to the bolt and installed in the inlet the barrel bore of an air rifle, a power cylinder with a piston connected to the thrust, while the over-piston cavity of the power cylinder is in communication with a gas chamber located at the cut of the channel the barrel of an air rifle, characterized in that it is equipped with a shutter locking mechanism, driven by a rod connected to the piston of the power cylinder. 2. The device according to claim 1, characterized in that the shutter locking mechanism is made in the form of a rotated cocking lever, equipped with a position lock, while the axis of rotation of the cocking lever is connected to the shutter. 3. The device according to claim 3, characterized in that the position lock is made in the form of a strap connected to the cocking lever, and a protrusion is formed on the opposite surface of the housing, while on the surface of the cocking lever there is a guide surface in contact with the end surface of the rod, and a groove made with the possibility of contact with the end surface of the rod outside the guide surface, while on the end of the strip formed protrusion made with the possibility of contact with the protrusion of the housing, and between the shutter and the spring is installed on the side of the contacting surfaces of the protrusions of the strip and the body. 4. The device according to claim 1, characterized in that it further comprises a removable magazine for supplying charges to the barrel, while the outlet channel of the store is combined with the channel of the housing for supplying charges.