WO2023135344A1 - Pre-charged pneumatics or pre-charged air sports carbine comprising an over-moulded reeiver body - Google Patents

Abstract

Pre-Charged-Pneumatics (PCP) or pre-charged air sports carabine comprising at least a first group (1) corresponding to the barrel (18), a second group (2) corresponding to the bolt (7) and hammer (10) mechanism, a third group (3) corresponding to the firing mechanism, and a fourth group (19) corresponding to the fluid that actuates a projectile (20) characterised in that it comprises at least one over-moulded or over-injected body (4), which in turns comprises at least partially the first group (1), at least partially the second group (2) and at least partially the third group (3), wherein the three groups jointly interact to fire the projectile (20).

Description

PCP OR PRE-LOADED AIR RIFLE.

DESCRIPTION

PCP sport carbine of the type that comprises at least a first group corresponding to the barrel, a second group corresponding to the bolt and hammer mechanisms, a third group corresponding to the firing mechanism, and a fourth group corresponding to the actuating fluid of a projectile characterized because it comprises at least one body, overmolded or overinjected, comprising at least partially the first group, at least partially the second group and at least partially the third group, the three groups interacting together to fire the projectile.

BACKGROUND OF THE INVENTION

Different procedures for overmolding/overinjection of silencers and barrels are known in the state of the art.

Thus, European Patent No. 2112452 (ES2345012) "FIREARM OR SPORTS WEAPON WITH SILENCER" belongs to the state of the art, from the same owner of this application, from 2008, which refers to a firearm or airarm. compressed with a sound reducer, of the type that includes a firing mechanism, a barrel, a chamber, said firearm or compressed air weapon comprising a sound reducer overmolded or overinjected into said barrel so that the barrel and the reducer form a single piece.

The signature itself is the holder of European Patent No. 2677267 (ES2531858) "Procedure for the manufacture of a "bull barrel" model barrel with sound reducer and "bull barrel model" barrel with sound reducer obtained", from the year 2011 , which refers to a procedure for the manufacture of a model cannon "bull sweep can sound reducer and cannon "bull sweep model with sound reducer obtained comprising: the following phases: a first phase in which a tube, which defines two ends, a first and a second, with a larger internal diameter To the outer diameter of the barrel, it is fixed to a wedge at its first end, a second phase in which a muzzle that ends in a hat is fixed to the second end of the tube, said muzzle comprising at least one lateral opening and at least one first ring that fits into the tube, sealing the second end with also stops that define channels located in the hat, which connect the exterior with the interior of the muzzle, the aforementioned stops being the end of the career of the aforementioned tube, a third phase in which the barrel is fixed to the muzzle and to the wedge, defining a space or cavity between the tube and the barrel, and a fourth phase in which the configuration of the third phase is introduced into a molding machine that overmoulds it with the exception of the inlet end of the barrel, giving it the desired shape, penetrating said overmolding into the tube through the channels up to the said first ring.

Another patent in the same sector and from the same applicant firm is European Patent No. 2803934 (ES2570369) "PROCEDURE FOR THE MANUFACTURE OF A CANNON FOR COMPRESSED AIR OR CO ₂ RIFLES AND CANNON SO OBTAINED", of the year 2012, which refers to procedure for manufacturing a barrel for compressed air or CO ₂ rifles and barrel thus obtained comprising a hollow tube, inside which a pellet circulates, with an inlet end and an outlet end, characterized in that it comprises: a first phase in which the tube is introduced into a molding machine, and fixing elements or supports are introduced, fixing the tube and leaving it cantilevered, centered, stable, inside the molding machine, and a second phase in which it is overmolded the tube except for the inlet end of the tube, shaping it into the desired shape.

Finally, it is also worth noting from the same applicant company the European Patent No. 3358289 (ES2767929) "SPORTS CARBINE WITH REDUCER DE SONIDO", of the year 2016, which refers to a sports carbine with a sound reducer that includes a stock, a trigger mechanism, and a barrel partially covered by an overmolded or overinjected material, said overmolded or overinjected material also defining a primer. space or housing for the placement of a sound reducer below or next to the barrel and a second space around at least a part of the barrel, and in that the sound reducer comprises: - an entrance where the barrel is located and comprising a diameter support like the second space on which it fits, with perforations that connect said second space with the first space or housing, and - an outlet comprising a built-in plug.

BRIEF DESCRIPTION OF THE INVENTION

The present invention falls within the field of sports carbines, specifically PCP carbines.

PCP carbines are known as "pre-charged pneumatic" or translated as pre-charged air.

As can be seen, the applicant firm is continually evolving the subject of overmoulding/over-injection. The previous examples refer to so-called “break-barrel” carbines.

In this application, a monobloc body of a PCP carbine is overmoulded/overinjected, unlike the closest document (EP3358259), which is the barrel with the sound reducer.

Usually in PCP carbines there are three different groups that are assembled together. These are the barrel group, the mechanism group (bolt and hammer drive) and the trigger group. The fact that they are three different groups means that the construction tolerances of each one of them is added to the others and finally it happens that a very wide field of tolerances is created in the finished product, which can negatively influence the operation of the PCP carbine.

With the monoblock design of the present invention, the three systems are part of the same part, so this range of tolerances can be considerably reduced as it is a single over-injected or over-moulded part.

On the other hand, there is also a cost reduction. In the section on material costs, the main injection body replaces many parts that were previously used, which, moreover, most of them have very expensive machining. With the new design, the inventors calculate that the number of parts is reduced by 25%, depending on the carbine model.

In the section of cost reduction related to assembly, with this invention, by eliminating a large number of parts of the product, a very significant drop in assembly costs is achieved, since the carbine is produced more quickly and is more reliable.

All of this leads the inventors to calculate that the new invention would mean a reduction in costs, both due to the issue of parts and assembly, of more than 40%, compared to conventional PCP carbines.

Another optional upgrade to the bolt mechanism should also be noted. In conventional PCPs, the bolt is normally actuated by turning around its axis to unlock and then pulling it backwards. To insert the pellet you have to push forward and turn the bolt again to lock. In the present invention, as it has been made in an injection part, the actuation is much more natural, slightly pressing the bolt downwards and pulling it back to position a new pellet and simply pushing it forward to insert it into the barrel. This would not have been possible with machined parts as was usually done. An object of the present invention is a PCP sport carbine of the type that comprises at least a first group corresponding to the barrel, a second group corresponding to the bolt and hammer mechanisms, a third group corresponding to the firing mechanism, and a fourth group corresponding to the actuating fluid of a projectile characterized in that it comprises at least one body, overmolded or overinjected, comprising at least partially the first group, at least partially the second group and at least partially the third group, the three groups being interacting together for firing of the projectile.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to facilitate the explanation, eight sheets of drawings are attached to this report in which a practical case of realization has been represented, which is cited by way of example, not limiting the scope of the present invention:

- Figure 1 is a perspective view of a carbine object of the present invention,

- Figure 2 is a longitudinal section along line ll-ll of figure 1,

- Figure 3 is a detail of Figure 2, of the body area,

- Figure 4 is an inclined rear view of Figure 1 without the stock,

- Figure 5 is a view of the second group and the third group,

- Figure 6 is a perspective view of the intermediate block,

- Figure 7 is a view of the base with the barrel integrally overmolded, and

- Figure 8 is a detail of the bolt lock.

CONCRETE PERFORMANCE OF THE PRESENT INVENTION Thus, Figure 1 illustrates a first group 1, a second group 2, a third group 3, a body 4, a fourth group 19, a magazine 33 and a stock 23.

Figure 2 represents the third group 3, a bolt 7, a hammer 10, an intermediate block 11, a barrel 18, a gas tank 22 and the stock 23.

Figure 3 shows the third group 3, the base 5, the bolt 7 with its housing 8 and a first stop 9, the hammer 10, the intermediate block 11, a housing 12, a push means 13, a lower fin 14, the barrel 18, a projectile 20, the gas tank 22, the stock 23, a valve 24, a valve shaft 25, an air passage 26, a slider 27, a ratchet 28, a trigger 29, a counter pawl 30, magazine 33, a first tooth 34, a second tooth 35 and a spring 37.

Figure 4 exemplifies the body 4, the base 5, a cover 6, the bolt 7, the first group 1, fixing means 21, the gas tank 22, the trigger 29, anchors 32 and the magazine 33 .

Figure 5 shows the bolt 7, the first stop 9, the hammer 10, the intermediate block 11, the thrust means 13, the lower fin 14, a strap 15, the projectile 20, the guiding elements 31, the first tooth 34, and spring 37.

Figure 6 shows the intermediate block 11, the second housing 12, the thrust means 13, the strap 15, the guide elements 31 and the second stop 36.

Figure 7 shows the first group 1, the base 5, the housing 8, some first guides 16, some second guides 17 and the anchors 32.

Finally, figure 8 reproduces the base 5, the bolt 7, the first tooth 34 and the second tooth 35. The PCP sport rifle, or also known as pre-charged air rifle, of the present invention, is divided into a series of general groups that group together different parts and components of the rifle.

Thus, it comprises at least a first group 1 corresponding to the barrel 18, which is overmolded as shown in figure 1.

It also includes a second group 2 that corresponds to the bolt 7 and hammer 10 mechanisms of the sport rifle.

It also includes a third group 3 that refers to the firing mechanism itself.

And, finally, it comprises a fourth group 19 corresponding to the system that stores and activates the actuating fluid of a projectile 20.

The invention also comprises at least one body 4, overmolded or overinjected, which, in turn, comprises at least partially the first group 1, at least partially the second group 2 and at least partially the third group 3, the three groups being interacting. jointly for firing the projectile 20. That is, it is a body 4 that allows the three groups to be interrelated by means of overmolding or overinjection.

This means cost savings, since fewer parts are needed to assemble a PCP carbine, but also in terms of reliability, since the measurements and dimensions do not vary with the interrelationships between the different groups and the parts are always the same, fitting without problems in the enabled spaces. Before it could happen that by tightening a screw more or less the effectiveness of the shot could be varied, both in terms of aiming, as well as the gas outlet, the trigger and accessories. With this invention all these problems are solved since the number of of parts, the tolerances between them are reduced and therefore the chances of failure in the development of the carbine.

Optionally, the body 4 comprises a base 5 and a cover 6, which by removing said cover 6 allows access to the interior of the sport rifle.

Also optionally, it can be configured that the base 5 is integral with the first group 1, as shown in figure 7. This has advantages relative to manufacturing, since at the moment the base 5 is obtained by molding or injection, the part of the first group 1, the barrel part, is also obtained.

Another of the manufacturing options is that the cover 6 is the one that is attached to the first group 1 . The difference between the option of the previous paragraph and this paragraph is determined by the barrel 18, which may happen that, depending on which model, it is easier to over-mold the first group 1 attached to the cover 6, than to make it attached to the base 5.

The second group 2 comprises a bolt 7, which is also manufactured over-molded or over-injected, which benefits with the tolerances and in its manufacture, and which is arranged in a first housing 8 made in the body 4, said bolt 7 comprising the minus one lower fin 14.

It can also comprise an intermediate block 11 (figure 6), which is located between the bolt 7 and the hammer 10 (figures 3 and 5). Said intermediate block 11 also comprises a second housing 12 with a path given for the arrangement and movement of the lower flap 14 inside it. Said intermediate block 11 also comprises thrust means 13 for moving the hammer 10.

That is, when the lower flap 14 moves inside the second housing 12, when it reaches the limit of the second housing 12 and said flap continues to move The lower 14 pushes the intermediate block 11 away from the gas tank 22, and the pushing means 13 that are integral with the intermediate block 11 move the hammer 10 away from the gas tank 22 when it comes into contact with it.

For this reason, when the thrust means 13 are displaced by the action of the lower flap 14, the thrust means also displace the hammer 10.

The bolt 7 can be configured to comprise a first stop 9, arranged outside the housing 12. This first stop 9 serves as an obstacle to the end of the bolt 7 stroke when it moves away from the barrel 18 and at the same time helps to push the block intermediate 11 when the bolt 7 advances towards the interior of the body 4 through the first housing 8.

To help fasten the bolt 7 in a secure manner, there is the possibility that the bolt 7 comprises at least one first tooth 34 that engages in a second tooth 35 of the body 4, blocking the exit of the bolt from inside the first housing. 8, as shown in Figure 8. In the event that the bolt 7 was to be released to fire a new shot, a slight downward pressure on the bolt 7 by the user would unlock the first tooth 34 of the second. tooth 35 and would allow bolt 7 to come out.

The intermediate block 11 could also be configured with an elastic band 15, which blocks the movement of the intermediate block 11 when the latch 7 is in its most advanced position. Thus, the first stop 9 creates tension on the strap 15 and the intermediate block 11 is prevented from becoming loose.

For guiding the intermediate block 11, in its forward and backward movements, the possibility has been designed for the base 5 and the cover 6 to each comprise first guides 16, facing each other. In this way, when the guiding elements 31 of the intermediate block 11 fit into said first guides 16, on the one hand, they facilitate the guiding of the intermediate block 11 in its movement, but at the same time they ensure that the intermediate block 11 does not move from that position, as a consequence of blows or jolts that the rifle may suffer.

Based on the same concept as in the previous paragraph, the inventors have added the possibility that the base 5 and the cover 6 each comprise second guides 17, facing each other, for guiding the hammer 10, in the movements advance and retreat, which are produced when said hammer 10 is pushed by the thrust means 13 of the intermediate block 11 in the direction away from the gas tank 22, compressing the spring 37, and in the direction of approaching the gas tank 22 as action from the decompression of the spring 37, when the ratchet 28 releases the hammer 10.

The carbine may also comprise fixing means 21 for a gas reservoir 22 belonging to the fourth group 19 to the barrel 18 overmolded or overinjected. Said fixing means can be in the form of flanges, leaving said flanges 21, which are attached to anchors 32 that are over-molded or over-injected in the barrel 18, strapped when mounting a stock 23.

In some carbine models, an overmolded or over-injected strip 27 could be configured in the body 4, thus avoiding having to manually install a strip 27 to mount the scope. In this way, since the strip 27 is overmolded or over-injected in the body 4, greater reliability is achieved in the shot since the strip 27 will always be correctly installed and calibrated.

In a specific embodiment, to load a new projectile 20, in this embodiment a pellet, the athlete would take the PCP carbine and pull the bolt 7 backwards, moving the bolt 7 away from the magazine 33, allowing said magazine 33 to rotate so that it a new pellet is faced 20. When pulling back, the bolt 7 must make a downward movement to release the first tooth 34 from the second tooth 35.

In addition, the lower flap 14 of the bolt 7 moves inside the second housing 12 of the intermediate block 11, until it reaches the end of its travel.

Upon reaching the end of its journey inside the second housing 12, due to the pull of the latch 7 outwards, the lower flap 14 comes up against the end of the second housing 12 and pushes it, moving the intermediate block 11 .

The intermediate block 11 has internal thrust means 13 that by contact move the hammer 10 backwards, compressing the spring 37, until the ratchet 28 blocks it.

The intermediate block 11 comprises guide elements 31 that move inside the first guides 16 of the base 5 and of the lid 6.

Next, the bolt 7 is driven forward and the lower flap 14 comes into contact with the second stop 36 of the intermediate block 11, pushing the intermediate block 11 due to the advancement of the bolt 7.

The bolt 7 at its front end pushes the new pellet 20 into the chamber of the pellet and at the same time the first tooth 34 is blocked by contact with the second tooth 35, blocking the bolt 7.

In the same way, the thrust means 13, when advancing forward thanks to the impulse of the lower flap 14 against the second stop 36, leave the hammer 10 without obstacles so that it impacts against the valve shaft 25.

When the athlete activates the trigger 29, he releases the counter-ratchet 30 and this acts on the ratchet 28, which releases the hammer 10, which, thanks to the spring 37, is released. decompresses, advances towards the valve shaft 25 which it hits, pushing it into the valve 24, unlocking the passage of the fluid that comes out, driving said fluid through the air passage 26 to the ball chamber, propelling the ball 20 through the interior of canyon 18 and from there to the exterior.

The present invention describes a new PCP or pre-loaded air sport rifle. The examples mentioned here are not limiting of the present invention, therefore it may have different applications and/or adaptations, all of them within the scope of the following claims.

Claims

1.- PCP or pre-loaded air rifle of the type comprising at least a first group (1) corresponding to the barrel (18), a second group (2) corresponding to the bolt (7) and hammer (10) mechanisms ), a third group (3) corresponding to the firing mechanism, and a fourth group (19) corresponding to the actuating fluid of a projectile (20) characterized in that it comprises at least one body (4), overmolded or overinjected, which at least partially comprises the first group ( 1), at least partially the second group (2) and at least partially the third group (3), the three groups being interacting together to fire the projectile (20). 2.- Carbine, according to claim 1, characterized in that the body (4) comprises a base (5) and a lid (6). 3.- Carbine, according to claim 2, characterized in that the base (5) is in solidarity with the first group (1). 4. Carbine, according to claim 2, characterized in that the cover (6) is integral with the first group (1). 5. Carbine, according to claim 3 or 4, characterized in that the second group comprises an overmolded or over-injected bolt (7), which is arranged in a first housing (8) made in the body (4) comprising said bolt ( 7) at least one lower flap (14). 6. Carbine, according to claim 5, characterized in that it comprises an intermediate block (11), arranged between the bolt (7) and the hammer (10), with a second housing (12) with a given route for the arrangement and the displacement of the lower flap (14) inside and thrust means (13) for the displacement of the hammer (10). 7. Carbine, according to claim 6, characterized in that the bolt (7) comprises a first stop (9), arranged outside the housing (12). 8. Carbine, according to claim 7, characterized in that the bolt (7) comprises at least one first tooth (34) that engages in a second tooth (35) of the body (4), blocking the exit of the bolt from the inside. of the first accommodation (8). 9.- Carbine, according to claim 6, characterized in that the intermediate block (11) comprises an elastic band (15), which blocks the movement of the intermediate block (11) when the bolt (7) is in its furthest position. advanced. 10.- Carbine, according to claim 6, characterized in that the base (5) and the cover (6) each comprise first guides (16), facing each other, which fit into guide elements (31) of the intermediate block (11), for guiding said intermediate block (11) in its forward and backward movement. 11. Carbine, according to claim 6, characterized in that the base (5) and the cover (6) each comprise second guides (17), facing each other, for guiding the hammer (10). 12.- Carbine, according to claim 6, characterized in that it comprises fixing means (21) of a gas tank (22) belonging to the fourth group (19) to the barrel (18) overmolded or overinjected, said means of fixing (21) flanges, leaving said flanges (21) that are attached to anchors (32) overmolded or overinjected in the barrel (18), strapped when assembling a stock (23). 13. Carbine, according to claim 4, characterized in that the body (4) comprises a strip (27) overmolded or overinjected.