RU63917U1 - PNEUMATIC UNDERWATER GUN - Google Patents

Abstract

Field of technology The utility model relates to sports equipment, namely to guns, pistols for spearfishing. The shotgun contains a barrel 1 with a muzzle bushing 2 and a seal 3, a harpoon 4, a trigger mechanism consisting of a trigger 5, a spring 6, a rod 7 and an axleless sear 8. The shotgun also contains a step plug 9 interacting with a seal 3 and a harpoon 4, s with a diameter smaller than the diameter of the barrel 1, the handle 10, the lodgement 11, the rear sleeve 12, with a charging valve 13 and a plug 14. The muzzle sleeve 2 is equipped with a liner 15, front sight 16 and support 17.

Description

Technical field

The utility model relates to sports equipment, namely to guns, pistols for spearfishing.

State of the art

Known air rifle for spearfishing (Russian patent N 2148771), containing coaxially placed glasses with sides, with radial holes made in the wall of the muzzle sleeve.

Also known is a pneumatic gun for spearfishing (Russian patent N 2168140). The pneumatic gun has a housing with a working medium, a handle with a trigger, a spring-loaded rod connected to it, a muzzle with holes on one end of the housing and a nipple mounted on the other end of the housing having a two-stage outer surface.

Also known is a pneumatic underwater gun (Russian patent N 2082933). The gun contains a barrel, a muzzle, a receiver, a piston and a handle with a trigger.

An underwater gun is also known (Russian patent N 2086882). When loading the gun, the harpoon is inserted into the axial channel of the rod with simultaneous sealing of the shank.

When fired, the working piston with the rod and harpoon moves forward, pushing the annular column of water, which is scattered through the drainage holes into the environment.

Also known is a pneumatic harpoon gun for sports underwater shooting (Russian patent N 2071587). The gun contains a concentrically arranged pneumatic accumulator and a barrel, the volume of the pneumatic accumulator being at least ten times the volume of the barrel. The diameter of the harpoon is as close as possible to the internal diameter of the barrel, their difference is not more than 1-2 mm. The area of the barrel opening for ejection of intra-barrel water is not less than twice the cross-sectional area of the barrel.

Also known is a pneumatic spear gun (New Zealand patent N 334398) containing compressed air in the barrel connected to the receiver, the receiver volume being controlled by an annular piston.

Also known is a pneumatic valve universal speargun for spearfishing (Russian patent N 2154249), comprising a receiver with a handle, a trigger,

barrel mounted in the receiver, piston-pusher, muzzle, battle regulator. return spring and retaining ball.

Also known is a pneumatic speargun for spearfishing (Russian patent N 2168140), comprising a housing with a working medium, a handle with a trigger. a spring-loaded rod connected to it, a muzzle with openings mounted on one end of the housing and a nipple mounted on the other end of the housing, having a two-stage outer surface.

Also known is a pneumatic spear gun (patent of Russia N 2239761) containing a barrel with a muzzle, a piston placed in the barrel with the possibility of longitudinal movement, a harpoon, a sear installed with the possibility of interaction in the cocked position with its upper end with an annular groove at its front end and cravings. The rod is pivotally attached at one end to the rear end of the trigger, and at the other end to the trigger. The disadvantages of the known technical solutions are:

- Low efficiency, for example, in piston underwater guns there are energy losses for acceleration of the piston and water in the barrel;

- Throttling of the outgoing water in the bow, which leads to a decrease in efficiency;

- Noisiness when fired;

- Lack of reliability of the trigger mechanism;

- Low accuracy of the battle;

- The complexity and low technological design, for example, in piston underwater guns, it is necessary to carefully process the inner surface of the barrel:

- Large mass and dimensions.

Utility Model Disclosure

The purpose of the utility model is to create a targeted, powerful, small-sized reliable airgun for spearfishing. The technical solution allows us to simplify the design and improve the operational characteristics of the device (silent shots, high efficiency - up to 97%, high combat accuracy, operational reliability, increased safety, reduced weight and dimensions, etc.), and also makes it possible to achieve high technology.

Also an advantage of the claimed device is the high accuracy of the battle, due to the fact that the harpoon moves along the muzzle (guide) until it leaves the barrel. This allows you to shoot fish from a greater distance than with

piston air rifles. The small size of the guns is a particular advantage during transportation and spearfishing in dense algae, and the high accuracy of the battle allows you to hit fish from a long distance.

Brief Description of the Drawings

The technical solution is illustrated by drawings, in which Fig. 1 shows a general view of an underwater gun, Fig. 2 shows a view of a gun and a spreader from above, and Fig. 3.4 shows the operation of an axleless sear.

Description

The gun contains a barrel 1 (Figure 1) with a muzzle bushing 2 and a seal 3, a harpoon 4, a trigger mechanism consisting of a trigger 5, a spring 6, a rod 7 and an axleless sear 8. The gun also contains a step plug 9 interacting with the seal 3 and a harpoon 4, with a diameter smaller than the diameter of the barrel 1, the handle 10, the lodgement 11, the rear sleeve 12, with a charging valve 13 and a plug 14. The muzzle sleeve 2 is provided with a liner 15, a front sight 16 and a support 17. A protrusion is located on the muzzle sleeve 2 line spreader 18 (Figure 2). The plug 14 holds the spring 19 of the hook 20 of the spreader. The step plug contains 3 steps - 21, 22 and 23, with the step of the smallest diameter 21 interacting with the groove on the harpoon 4, the middle step 22 has a diameter equal to the diameter of the harpoon 4, and the step of the largest diameter 23 is larger than the diameter of the harpoon, but less than the inner diameter of the barrel 1, while the frictional force between the harpoon 4 and the cork part with the smallest diameter 21 exceeds the inertia force acting on the cork when firing,

A rubber rod 24 protruding beyond its axis can be mounted on a step plug 9 perpendicular to the plug axis. The barrel 1 is a pressure pneumatic accumulator — a source of shot energy and can be made of metallic or non-metallic material.

Utility Model Embodiments

Unscrewing the plug 14 (Figure 1), pump (not shown) pump air into the receiver. formed by barrel 1, muzzle 2 and rear 12 bushings, up to a pressure of 20-50 atmospheres. Insert the harpoon 4 into the muzzle bushing 2, while the plug 9, with its smaller diameter step, enters the groove of the rear of the harpoon 4. Overcoming the air resistance in the receiver, the harpoon 4 is inserted into the barrel 1 to the extreme rear position. In this case, the groove in the front of the harpoon is located opposite the sear 8. The trigger rod 7, moving in the support 17 under the action of the spring 6, squeezes the sear 8 up into the groove C of the harpoon 4 with its bevel A and passes forward by 0.5-1.5 mm .

Harpoon 4 takes its starting position for a shot. Wrap the line (not shown in the figure) on the protrusion 18 and the hook 20 (Figure 2), starting from the hook 20.

To fire a shot, press the trigger 5, pulling the rod 7 back. The harpoon 4 with its bevel D in the groove C squeezes, whispered 8 down and starts moving forward in the sleeve 15, overturning the hook 20 at the beginning of the movement to release the line. Harpoon 4 silently and without friction loss moves into the liner 15 and leaves the gun (Figure 3). Operation when charging a harpoon turns into kinetic energy of a harpoon.

Unlike pneumatic guns with a piston, in which the rubber seal on the piston moves towards the water in the barrel and is lubricated with a water film - with noticeable friction losses, in the proposed design, the seal is lubricated with oil film on the harpoon inside the barrel and at high speed the friction in the ring 3 is practically absent (aquaplaning effect). Moving together with the harpoon 4, the plug 9 in the front position by a step of a larger diameter 23 lies on the o-ring 3 (Figure 4). Since the cork 9 is made of polymer, weighing about 2 g and hits the rubber ring 3, there is no sound upon impact. The shot occurs silently and you can hear the harpoon falling into the fish or flying by. The fish is not afraid.

Until the moment the harpoon leaves the 4 guns, he moves absolutely precisely, providing high accuracy of hit. In ordinary guns (V.I. Vinogradov. Spearfishing in Russia. Moscow, Publishing House Ripol Classic, 2003, p. 62), the harpoon rests on the piston and the line bushing, which is knocked out almost immediately with water at the beginning of the shot.

In the proposed design, the muzzle sleeve 2, plug 9 and the rear sleeve occupy a relatively small part of the length of the gun, and there are practically no losses on the working length. With conventional guns, only 40-50% of the work when charging turns the energy of the shot. Therefore, with the same energy of the shot, the gun turns out to be half as long as usual. A shorter harpoon of smaller mass provides a high sharpness of battle (with a “sluggish" dispersal of a harpoon over a long length of a gun, fish often manage to get away from the harpoon).

In the proposed design, the tench is attached to the harpoon in front. This does not affect the accuracy of the battle, at a length of 3 m.

The acceleration on the harpoon during firing reaches 100 g and the inertia force of 200 g that detaches it from the harpoon acts on the cork weighing 2 g. For reliable operation of the gun, the friction force of the cork relative to the harpoon should be in the range from 0.5 to 1 kg. This force is provided either by fitting the cork or by a rubber rod,

installed in the cork in the step of the smallest diameter perpendicular to its axis, and slightly protruding beyond it. The only wearing part is ring 3, which improves the performance of the gun.

In the presented design of the gun, the muzzle and rear bushings are screwed with the barrel, so the barrel wall thickness should be at least 1.5-2 mm. It is possible to connect the muzzle and rear bushings with the help of an internal tube along which the tube moves with sliding (not shown in the drawings). The connection of both bushings can also be carried out using long studs. Trigger 5 can be made to swing.

Industrial applicability

When analyzing the technical solution for compliance with the “novelty” criterion, it was revealed that part of the features of the claimed population is new, therefore, the solution meets the “novelty” criterion.

In addition, through the proposed device, a result is achieved that meets long-standing needs.

The technical solution can be used in industry, can be replicated and, therefore, meets the criterion of "industrial applicability".

The advantages of the proposed technical solution are to create optimal operating conditions that best suit the working conditions of underwater rifles.

Thus, the proposed design has the following technical result.

With a sharp decrease in design complexity and an increase in manufacturability, a powerful target small-sized, silent, underwater gun was obtained that surpasses well-known technical solutions for ease of use and transportation.

Claims (15)

1. A pneumatic underwater gun containing a barrel with a muzzle and seal, a harpoon, a handle, a trigger and a step plug interacting with a seal and a harpoon with a diameter smaller than the barrel’s inner diameter, characterized in that the plug is three-stage and the smallest the diameter interacts with the harpoon groove, the middle step has a diameter equal to the diameter of the harpoon, and the step of the largest diameter has a diameter greater than the diameter of the harpoon, but smaller than the inner diameter of the barrel, When this friction force between the harpoon and the tube part with the smallest diameter exceeds the force of inertia acting on the plug during firing. 2. Pneumatic underwater gun according to claim 1, characterized in that the friction force between the harpoon and part of the cork with the smallest diameter is 2-5 times less than the inertia force acting on the cork when fired. 3. Pneumatic underwater gun according to claim 1, characterized in that the trigger mechanism is made in the form of an axial-free sear. 4. Pneumatic underwater gun according to claim 1, characterized in that at the stage of the smallest diameter of the tube there is a rubber rod, perpendicular to the axis of the tube, protruding beyond the diameter of the stage and interacting with the groove on the harpoon. 5. Pneumatic underwater gun according to claim 1, characterized in that between the barrel and the handle there is a lodgement in which the trigger is placed. 6. Pneumatic underwater gun according to claim 1, characterized in that the length of the harpoon is selected with the possibility of touching the harpoon with a stopper of the rear sleeve when charging. 7. Pneumatic underwater gun according to claim 1, characterized in that in one barrel there are several harpoons. 8. Pneumatic underwater gun according to claim 1, characterized in that the handle can occupy a front, neutral, and rear position relative to the center of the barrel. 9. Pneumatic underwater gun according to claim 1, characterized in that the muzzle bushing and the shank are connected by thread on the barrel. 10. Pneumatic underwater gun according to claim 1, characterized in that the muzzle and rear bushings are connected by thread on the barrel. 11. Pneumatic underwater gun according to claim 1, characterized in that the muzzle and rear bushings are connected by an inner tube, while the step of the tube of a larger diameter is greater than or equal to the diameter of the inner tube, and the inner tube is provided with holes. 12. Pneumatic underwater gun according to claim 1, characterized in that the muzzle bushing and the shank are connected via rods. 13. Pneumatic underwater gun according to claim 1, characterized in that the muzzle and rear bushings are connected by means of studs. 14. Pneumatic underwater gun according to claim 1, characterized in that the cork is made of durable polymer. 15. Pneumatic underwater gun according to claim 1, characterized in that the cross section of the barrel is made in the form of an ellipse.