Firing adapter of an alarm gun

Abstract

The invention relates to a firing adapter of an alarm gun, having a starting segment hollow cylinder and a projectile, wherein the starting segment hollow cylinder has, at one end, a thread for screwing together with a congruent thread on a firing channel of the alarm gun, at the mouth of the latter, and wherein the starting segment hollow cylinder has a channel which is arranged along a longitudinal centre axis of the starting segment hollow cylinder and the end of which that faces the mouth is connected to the firing channel of the alarm gun, and wherein the projectile has a blind hole and the starting segment hollow cylinder is arranged, at its end remote from the thread, with at least one portion in the blind hole. Therefore, the invention addresses the problem of creating a firing adapter of an alarm gun for shooting hard or soft projectiles, wherein, in improper use, the firing of other ammunition can be precluded. At the same time, balanced shooting of the hard or soft projectile is intended to be achieved. The problem is solved in that the channel (5) is closed, at an end remote from the mouth, on the longitudinal centre axis (2b) of the starting segment hollow cylinder (2), and in that the channel (5) has at least one outflow opening (5a) and this outflow opening (5a) has a smaller cross section than a cross section of the channel (5) perpendicular to the longitudinal centre axis (2b) of the starting segment hollow cylinder, and in that the outflow opening (5a) is arranged away from the longitudinal centre axis (2b) of the starting segment hollow cylinder (2).

Description

[0001] firing adapter of a blank firing gun

[0002] The invention relates to a firing adapter of a blank firing weapon, comprising a starting segment hollow cylinder and a projectile, wherein the starting segment hollow cylinder has a thread at one end for screwing onto a congruent thread of an ejection channel of the blank firing weapon at its muzzle, and wherein the starting segment hollow cylinder has a channel arranged along a central longitudinal axis of the starting segment hollow cylinder, the end of which facing the muzzle is connected to the ejection channel of the blank firing weapon and thus a gas flow coming from the ejection channel can be guided into the channel, and wherein the projectile has a blind hole, and the starting segment hollow cylinder is arranged with the end facing away from the thread with at least one section in the blind hole.

[0003] Blank-firing or gas pistols are known from the prior art, for example from DE 87 17 520 U1. Such a blank-firing pistol has a housing with an ejection channel running longitudinally of the pistol, a trigger mechanism with a firing pin, and at least one gas cartridge. When the trigger mechanism is pulled, the firing pin strikes the gas cartridge, whereupon the gas contained in the gas cartridge suddenly flows out and escapes from the housing of the blank-firing pistol via the ejection channel. The sudden escape of the gas is accompanied by a clearly audible bang, which can be used, for example, as an acoustic warning signal. Furthermore, the ejection channel has an internal thread at the end facing away from the gas cartridge, which is provided for screwing in an insert barrel (also called a launching cup) for firing a signal rocket.The flare is inserted into the insert barrel, so that in addition to the acoustic signal, a visual signal is also generated when the trigger is pulled. However, the disadvantage is that the use of blank-firing weapons with acoustic warning signals and / or visual signals does not always achieve the desired deterrent effect, especially against aggressive animals.

[0004] DE 90 13 674 U1 also discloses a launching cup as a firing adapter for blank-firing weapons for firing soft bullets. This launching cup essentially consists of a tube that is screwed into the thread of the exit port at the muzzle of a blank-firing weapon. The tube serves to accommodate a spherical soft bullet, which, after the trigger is pulled, is expelled from the tube by the gas pressure of the gas cartridge. A disadvantage, however, is that the accuracy with this launching cup is relatively low. Another problem is that the spherical soft bullet rolls out of the launching cup if the blank-firing weapon is held with the barrel facing down.

[0005] Another firing adapter is known from WO 2021 / 259408 A2. This firing adapter consists of a hollow cylinder launch segment and a soft or hard bullet. The hollow cylinder launch segment has a continuous channel and, at one end, an external thread for screwing into an internal thread of an exit channel of a blank-firing weapon at its muzzle. The soft or hard bullet is designed with a blind hole, which accommodates the hollow cylinder launch segment. A disadvantage, however, is that this firing adapter can also be misused. If used improperly, a correspondingly sized metal ball could be placed in the hollow cylinder launch segment and fired. Even if the kinetic energy of such a fired metal ball is low, this could still have a negative impact on the firing adapter's approval under firearms law.

[0006] The object of the invention is therefore to create a firing adapter for a blank-firing weapon for firing hard or soft bullets, which can prevent the firing of other ammunition in the event of improper use. At the same time, a balanced firing of the hard or soft bullet is to be achieved.

[0007] This object is achieved with a shot adapter having the features of claim 1. Advantageous embodiments can be found in subclaims 2 to 8.

[0008] According to the invention, the channel of the hollow cylinder launch segment is closed at an end facing away from the muzzle on the central longitudinal axis of the hollow cylinder launch segment and has at least one outlet opening located outside the central longitudinal axis of the hollow cylinder launch segment and having a cross-section smaller than a cross-section of the channel perpendicular to the central longitudinal axis of the hollow cylinder launch segment. This ensures that other ammunition placed in the channel cannot be fired, thus preventing the formation of a barrel in the sense of firearms law.

[0009] Furthermore, the invention provides that a frustoconical section arranged at least partially along the circumference of the starting segment hollow cylinder is formed between the thread and the section of the starting segment hollow cylinder arranged in the blind hole. The channel is guided through this frustoconical section. At the end of the projectile facing the frustoconical section, an outer diameter of the frustoconical section is larger than the inner diameter of the blind hole. A base surface of the truncated cone points towards the muzzle and a lateral surface of the truncated cone points towards the projectile. A side surface of the projectile facing the truncated cone is designed to be at least partially congruent with the lateral surface of the truncated cone, wherein this at least partially congruent side surface of the projectile rests against the truncated cone.The base area is the larger of the two parallel circular surfaces of a truncated cone, and the smaller circular surface is the top surface. The third bounding surface of a truncated cone is its lateral surface. The projectile is thus formed with a kind of negative torpedo tail.

[0010] The firing adapter according to the invention, together with a blank firing weapon, forms a firing device for animal defense. The hollow cylinder launch segment of the firing adapter is connected to the barrel of the blank firing weapon via the thread. A projectile (soft or hard bullet) is positioned on the hollow cylinder launch segment as a further component of the firing adapter. This is achieved by a blind hole whose length and diameter match the hollow cylinder launch segment. In use, the firing adapter is screwed into the barrel (or exit channel) of the blank firing weapon (similar to a pyrotechnic launch cup), and the projectile is placed onto the hollow cylinder launch segment via the opposite end with the blind hole.When the blank firing gun is fired, the gas from the blank cartridge flows through the barrel into the hollow cylinder of the firing adapter. Upon exiting the hollow cylinder, it accelerates the soft or hard bullet located there. The bullet detaches from the hollow cylinder, which acts as a guide pin, and is propelled toward the threat (aggressive animal). The bullet thus acts as a stopping force against the aggressive animal, thus repelling it.

[0011] The truncated cone-shaped section of the launch segment hollow cylinder forms a rebound surface for the gas flowing out of the projectile and, thanks to its shape, ensures a uniform thrust on the projectile.

[0012] In a first embodiment, the at least one outflow opening is located at the end region of the launch segment hollow cylinder facing away from the exit channel, in a wall of the launch segment hollow cylinder surrounding the channel (outside the central longitudinal axis of the launch segment hollow cylinder) in the blind hole of the projectile. One or more outflow openings can be provided in the wall of the launch segment hollow cylinder. Several outflow openings distributed in the wall within the blind hole enable a more homogeneous outflow of the gas introduced into the channel.

[0013] An advantageous embodiment provides that the at least one outflow opening is arranged at an angle of 90 degrees to the central longitudinal axis of the starting segment hollow cylinder. However, the invention is not limited to an angle of 90 degrees.

[0014] A gas flow guided from the blank cartridge of the blank pistol through the barrel into the channel of the hollow cylinder of the starting segment exits the channel again via at least one outlet opening located at the end of the hollow cylinder of the starting segment facing away from the exit channel. Thus, the gas flow is guided laterally along the hollow cylinder of the starting segment into the blind hole of the bullet, so that the excess pressure of the bullet building up in the blind hole pushes it away from the hollow cylinder of the starting segment. At an angle of 90 degrees between the outlet opening and the central longitudinal axis, radial gas discharge from the blind hole is ensured in all directions.

[0015] A further advantageous embodiment provides that on an inner surface of the blind hole of the projectile facing the hollow launch segment cylinder, grooves are recessed into the inner surface, essentially parallel to the hollow launch segment cylinder, and at least some of these grooves are connected to the at least one outflow opening arranged in the wall of the hollow launch segment cylinder surrounding the channel. Gas flowing out of the blind hole is guided (at least partially) through these grooves. The design of these grooves can thus impart spin to the projectile during firing, which in turn stabilizes its trajectory. In an advantageous embodiment, the grooves are helical around the central longitudinal axis of the hollow launch segment cylinder. However, the invention is not limited to this. The helical design of the grooves causes the projectile to rotate during the gas pressure release.

[0016] It is proposed that a gas expansion chamber be provided in the region of the outflow opening, formed by a cross-sectional widening of the blind hole in this region, and that this gas expansion chamber be connected to the grooves recessed into the inner surface of the blind hole. In the gas expansion chamber, the gas introduced into the projectile can initially expand in this chamber and thus be more effectively distributed across several grooves. In a further embodiment of the shot adapter according to the invention, it is provided that the at least one outflow opening is arranged in the outer surface of the truncated cone in the region of the side surface of the projectile that bears against the outer surface.The gas flow introduced into the channel discharges through the outlet opening located in the outer surface of the truncated cone and flows toward the side surface of the projectile adjacent to the outer surface, thereby pushing the projectile away from the truncated cone. One or more outlet openings can be provided on the outer surface of the truncated cone-shaped section. Multiple outlet openings distributed over the outer surface of the truncated cone-shaped section enable a more homogeneous outflow of the gas introduced into the channel.

[0017] An advantageous embodiment provides that grooves are embedded in the side surface of the projectile, which at least partially rests against the truncated cone, and run essentially parallel to the outer surface of the truncated cone. At least some of these grooves are connected to the at least one outlet opening arranged in the outer surface of the truncated cone. Here, too, with appropriate design of the grooves, the projectile can be set in rotation during the gas pressure release.

[0018] An embodiment of the invention is explained below with reference to the drawings.

[0019] They show:

[0020] The firing adapter of a blank firing weapon according to the invention has a starting segment hollow cylinder and a projectile.

[0021] Fig. 1 shows a side view of the projectile 1 of an embodiment of the shot adapter according to the invention. The projectile 1 has a cylindrical outer contour and can be designed as a soft or hard projectile. For example, the projectile 1 can be made of hard rubber, polyamide, or a plastic with

[0022] 5

[0023] REPLACEMENT LEAF (RULE 26) similar material properties, without the invention being limited thereto.

[0024] Fig. 2 shows a side view of a hollow cylinder 2 for a blank-firing weapon's firing adapter according to the invention. The hollow cylinder 2 has a thread 3 at one end for screwing onto a congruent thread of an ejection port at the muzzle of the blank-firing weapon. However, the muzzle of the blank-firing weapon is not shown in this illustration.

[0025] Fig. 3 shows a sectional view of the starting segment hollow cylinder 2 according to Fig. 2. The starting segment hollow cylinder 2 has a channel 5 arranged along a central longitudinal axis 4 of the starting segment hollow cylinder 2, the end 5a of which facing the muzzle is connected to the discharge channel of the blank-firing weapon. Here, too, the muzzle of the blank-firing weapon is not shown in this illustration. A gas flow coming from the discharge channel can thus be guided into the channel 5 via the end 5a.

[0026] The channel 5 is closed at an end 5b facing away from the mouth on the central longitudinal axis 2b of the starting segment hollow cylinder 2. Furthermore, the channel 5 in the illustrated embodiment has a plurality of outflow openings 5c, each of which has a smaller cross-section than a cross-section of the channel 5 perpendicular to the central longitudinal axis 4 of the starting segment hollow cylinder 2. Furthermore, the outflow openings 5c are arranged outside the central longitudinal axis 4 of the starting segment hollow cylinder 2. The outflow openings 5c are guided through a wall 6 of the starting segment hollow cylinder 2 surrounding the channel 5 at the end region of the starting segment hollow cylinder 2 facing away from the mouth of the reject channel. The outflow openings 5c are arranged at an angle of 90 degrees to the central longitudinal axis 4 of the starting segment hollow cylinder 2. However, this angle is not mandatory and can also be smaller - for example in the range 30 degrees to 90 degrees.

[0027] The invention is not limited to the number of outlet openings 5c shown. In principle, at least one outlet opening 5c ​​is sufficient. However, the pressure dissipation of the gas pressure built up in the channel 5 can be better distributed via more than one outlet opening 5c.

[0028] The starting segment hollow cylinder 2 is designed such that at least one section 2a of the starting segment hollow cylinder 2 can be inserted into a blind hole 7 of the projectile 3.

[0029] 6

[0030] REPLACEMENT BLADE (RULE 26) Between the thread 3 and the section 2a of the launch segment hollow cylinder 2 arranged in the blind hole 7, there is a frustoconical section 8 arranged at least partially along the circumference of the launch segment hollow cylinder 2. The channel 5 is guided through this frustoconical section, with the channel 5, in the illustrated embodiment, leading from a base surface of the truncated cone to a top surface of the truncated cone. An outer diameter 9 of the base surface of the frustoconical section 8 is larger than an inner diameter 7b of the blind hole 7 at the end 10 of the projectile 1 facing the frustoconical section 8. The base surface of the frustoconical section 8 points towards the muzzle, and a lateral surface of the frustoconical section 8 points towards the projectile 1.

[0031] At the upper end of the blind hole 7, between the bottom of the blind hole 7 and the gas expansion chamber, a centering shaft 15 is provided. This centering shaft 15, as part of the blind hole 7, has a reduced cross-section compared to the gas expansion chamber 13 and is designed such that the upper end of the launch segment hollow cylinder 2, facing away from the muzzle, is received in this centering shaft 15 with minimal clearance. This ensures an approximately linear advance of the projectile from the launch segment hollow cylinder 2 when firing the projectile 1.

[0032] Fig. 4 shows a sectional view of the projectile 1 according to Fig. 1 with the blind hole 7. In the view in Fig. 4, at the entrance 7a of the blind hole 7, at the end 10 facing the frusto-conical section 8, a lower side surface 10a of the projectile 1 is chamfered in the direction of the blind hole 7. This chamfer is designed such that the lower side surface 10a (pointing in the direction of the frusto-conical section 8 of the launch segment hollow cylinder 2) is at least partially congruent to the outer surface 8a of the frusto-conical section 8 and thus, when the projectile 1 is deployed on the launch segment hollow cylinder 2, the side surface 10a of the projectile 1 facing the frusto-conical section 8 rests at least partially against the outer surface 8a of the frusto-conical section 8.

[0033] Furthermore, on an inner surface 11 of the blind hole 7 of the projectile 1 facing the launch segment hollow cylinder 2, grooves 12 are recessed into the inner surface 11, essentially parallel to the launch segment hollow cylinder 2. At least some of these grooves 12 are operatively connected to the at least one outflow opening 5c ​​arranged in the wall 6 of the launch segment hollow cylinder 2 surrounding the channel 5. Furthermore, in the region of the outflow openings 5c, a gas expansion chamber 13 is provided, which is formed by a cross-sectional widening of the blind hole 7 in this area. This gas expansion chamber 13 is connected to the grooves 12 recessed in the inner surface 11 of the blind hole 7.

[0034] In the illustrated embodiment, the grooves 12 are guided helically around the central longitudinal axis 4 of the starting segment hollow cylinder 2, without the invention being limited thereto.

[0035] In a further embodiment of the shot adapter according to the invention (not shown), the at least one outflow opening 5c ​​is arranged in the region of the side surface 10a of the projectile 1 lying against the outer surface 8a in the outer surface 8a of the frustoconical section 8. In an advantageous embodiment, the side surface 10a of the projectile 1 lying at least partially against the frustoconical section 8 can have grooves guided essentially parallel to the outer surface 8a of the frustoconical section 8, which grooves are connected to the at least one outflow opening 5c ​​arranged in the outer surface 8a of the frustoconical section 8.

[0036] In order to fix the projectile 1 placed on the starting segment hollow cylinder 2, one or more annular gaps 14 for receiving an O-ring are provided on the starting segment hollow cylinder 2, wherein an outer diameter of the O-ring is adapted to the inner diameter of the blind hole 7 in this area in such a way that an unintentional slipping of the projectile 1 from the starting segment hollow cylinder 2 when the blank firing weapon is not in use is prevented.

[0037] List of reference symbols

[0038] bullet

[0039] Starting segment hollow cylinder a Section of the starting segment hollow cylinder

[0040] thread

[0041] Central longitudinal axis of the starting segment hollow cylinder 2

[0042] Channel a end of the channel facing the outlet 5 b end of the channel facing away from the outlet 5 c outlet openings

[0043] Channel 5 surrounding wall of the starting segment hollow cylinder 2

[0044] Blind hole of the projectile 1 a Entrance of the blind hole 7 b Inner diameter of the blind hole 7 at the entrance 7a of the blind hole 7c Bottom of the blind hole 7 truncated conical section of the starting segment hollow cylinder 2

[0045] Outer diameter 0 end of the bullet facing the truncated cone section 11 inner surface of the blind hole 7 2 groove 3 gas expansion chamber 4 annular gap 5 centering shaft

Claims

Patent claims 1. A firing adapter (1) for a blank firing weapon, comprising a hollow cylinder for launching the segment (2) and a projectile (3), wherein the hollow cylinder for launching the segment (2) has a thread (4) at one end for screwing onto a congruent thread of an ejection channel of the blank firing weapon at its muzzle, and wherein the hollow cylinder for launching the segment (2) has a channel (5) arranged along a central longitudinal axis (2b) of the hollow cylinder for launching the segment (2), the end of which channel is connected to the ejection channel of the blank firing weapon and thus a gas flow coming from the ejection channel can be guided into the channel (5), and wherein the projectile (3) has a blind hole (6), and the hollow cylinder for launching the segment (2) is arranged with the end facing away from the thread (4) with at least one section (2a) in the blind hole (6), characterized in thatthat the channel (5) is closed at an end facing away from the mouth on the central longitudinal axis (2b) of the starting segment hollow cylinder (2) and that the channel (5) has at least one outflow opening (5a) and this outflow opening (5a) is smaller in its cross section than a cross section of the channel (5) perpendicular to the central longitudinal axis (2b) of the starting segment hollow cylinder and that the outflow opening (5a) is arranged outside the central longitudinal axis (2b) of the starting segment hollow cylinder (2) and that between the thread (4) and the section (2a) of the starting segment hollow cylinder (2) arranged in the blind hole (6) there is aa truncated cone-shaped element (14) is provided, the channel (5) is guided through this truncated cone-shaped element and that an outer diameter (15) of this truncated cone is larger than the inner diameter (8) of the blind hole (6) and that a base surface (14a) of the truncated cone points towards the muzzle and a lateral surface of the truncated cone points towards the projectile and that a side surface of the projectile facing the truncated cone is at least partially congruent with the lateral surface of the truncated cone and this at least partially congruent side surface of the projectile rests against the truncated cone.

2. Shot adapter (1) according to claim 1, characterized in that the at least one outflow opening (5a) in the blind hole of the projectile at the end region of the starting segment hollow cylinder facing away from the mouth of the discharge channel is arranged in a the wall (2c) of the starting segment hollow cylinder (2) surrounding the channel (5).

3. Shot adapter (1) according to claim 2, characterized in that the at least one outflow opening (5a) is arranged at an angle of 90 degrees to the central longitudinal axis (2b) of the starting segment hollow cylinder (2).

4. Shot adapter (1) according to one of claims 2 or 3, characterized in that on an inner surface of the blind hole of the projectile facing the starting segment hollow cylinder, grooves are let into the inner surface substantially parallel to the starting segment hollow cylinder and at least a part of these grooves is connected to the at least one outflow opening (5a) arranged in the wall (2c) of the starting segment hollow cylinder (2) surrounding the channel (5).

5. Shot adapter (1) according to claim 4, characterized in that a gas expansion chamber is provided in the region of the outflow opening (5a) and this gas expansion chamber is formed by a cross-sectional widening of the blind hole in this region and this gas expansion chamber is connected to the grooves recessed in the inner surface of the blind hole.

6. Shot adapter (1) according to claim 4 or 5, characterized in that the grooves are guided helically around the central longitudinal axis (2b) of the starting segment hollow cylinder (2).

7. Shot adapter (1) according to claim 1, characterized in that the at least one outflow opening (5a) is arranged in the region of the side surface of the projectile lying against the lateral surface in the lateral surface of the truncated cone.

8. Shot adapter (1) according to claim 7, characterized in that grooves are recessed into the side surface of the projectile which at least partially rests against the truncated cone and are guided substantially parallel to the outer surface of the truncated cone, and at least a part of these grooves is connected to the at least one outflow opening (5a) arranged in the outer surface of the truncated cone.

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