EP1117970B1 - Mounting device for fixing a silencer to the barrel of a portable firearm - Google Patents

Abstract

A retainer for securing a silencer to a barrel of a handgun is disclosed. The retainer includes a counter-attachment on the barrel of the handgun for attaching the barrel to the retainer, and also includes a forward part for receiving the silencer. A bore extends through the retainer for receiving the counter-attachment, and the inner profile of the bore and the outer profile of the counter-attachment define at least one gas expansion chamber between the counter attachment and the bore when the counter-attachment is disposed in the bore. A lock on the retainer engages a collar on the counter-attachment, thereby releasably securing the counter-attachment in the bore.

Description

The invention relates to a holder for fastening a Silencer on the barrel of a handgun. This Bracket is outlined in claim 1 and is by inventive Training determined both on the silencer are present or can be attached to it, as well as on the barrel or be attached to this can.

In the following, "pointing in the weft direction" under "front" Roger that.

For handguns with a removable silencer, the Bracket usually meet two requirements: it must have a centering effect so that the soul axis or the longitudinal center axis of the silencer and that of the barrel cursed well with each other, and she must be against them Combustion gases emerging from the barrel are gas-tight his. These combustion gases have the highest pressure occurring in the area of the silencer. A slight leak causes the shot Combustion gas - usually at supersonic speeds - exits outdoors and for a clear one Expansion bang ensures.

It is on the transition between drum and barrel one Revolvers referenced from which when shooting practically always Gas escapes and causes an expansion bang that the Effect of a silencer on a revolver so strong reduces that one usually refrains from a revolver to be equipped with a silencer at all.

For centering are cylindrical, coaxial to the core axis, complementary fits on the muffler and barrel trained, which are pushed together as free of play as possible can be. A gas seal is usually used Fine thread used that has at least some slopes is long and therefore a sufficiently sealing labyrinth seal forms (DE 42 31 183 C1) ..

Because screwing on the muffler is time consuming and requires a bit of tact to do that A fine fit can also not damage fine threads can be used as a gas seal. Prerequisite for this however, that is of complementary cylindrical surfaces formed seat zone of the snug fit in the longitudinal direction the soul axis extends over such a sufficient distance, that all possible leaks have become ineffective are due to pressure-related yielding of the fitting surfaces caused and caused by scratches and other formal errors in the areas are reinforced. In other words, the said seating area in the axial direction be long enough, otherwise it can, especially after prolonged use, when shooting to Gas leakage and thus the occurrence of an expansion bang come.

The quick, but at the same time gentle pushing together especially two cylinder mating surfaces that are long in the axial direction is also not easy and takes time almost as long as screwing the Silencer. Pinching can occur, in particular then when the cylinder surfaces are dirty are. Powdery smoke, which is deposited in the seating area has particularly hindered the removal of the silencer from the barrel, see e.g. document DE-C-4 231 183.

In view of this problem, the aim of the invention is a bracket for a silencer on the barrel of a To find handgun, where the deferral of the Silencer on the barrel is possible without it on the above-mentioned difficulties (clamps or the like) comes, and without a clear expansion bang occurs.

Furthermore, the muffler should be removed from the barrel be relieved.

• die zylindrische Sitzzone möglichst lang auszubilden, um eine gute Zentrierung und besonders eine gute Abdichtung zu erhalten, auch wenn die Passung nicht unbedingt für einen strammen Sitz sorgt,
• die Sitzzone möglichst unterbrechungsfrei und glatt auszubilden, um ein störungsfreies Aufeinanderschieben der zylindrischen Flächen zu gewährleisten, und
• einen konischen Einlaufbereich auszubilden, der beim Aufschieben des Schalldämpfers die zylindrischen Flächen aufeinander ausrichtet, bevor sie in der Sitzzone in Berührungseingriff gelangen. Eine solche Halterung baut allerdings relativ lang; Pulverschmauch, der in die Sitzzone gelangt, erschwert außerdem das Abziehen des Schalldämpfers vom Lauf der Feuerwaffe noch immer, wenn auch ein wenig geringer als früher, soweit die Passung lose genug ist.

For this it would be useful

• make the cylindrical seat zone as long as possible to ensure good centering and particularly good sealing, even if the fit does not necessarily ensure a tight fit,
• to make the seating area as smooth and uninterrupted as possible in order to ensure that the cylindrical surfaces are pushed together without interference, and
• to form a conical inlet area which, when the silencer is pushed on, aligns the cylindrical surfaces with one another before they come into contact with one another in the seating zone. However, such a bracket is relatively long; Powder smoke entering the seating area also makes it more difficult to remove the muffler from the barrel of the firearm, albeit a little less than before, insofar as the fit is loose enough.

According to the invention, the above goal is achieved in a completely different way: the seating area is not excessively long and is also not designed without interruption, but within the length of the seating area is at least an expansion room arranged: the centering and sealing Only sits on a short ring area in front of and behind the expansion space (claim 1).

If you add up the length of all ring areas, the result is a seat zone length that, by itself considered, for satisfactory high pressure sealing not would be sufficient. The front ring area that the Muffler is closest, is therefore the shot let combustion gases pass behind, which then actually blow out into the expansion space. There, however, these gases can relax, so that the Pressure applied to the rear annulus, which in turn from Muffler is removed so low that over this gas leaking away no more expansion bang generated.

If necessary, several expansion rooms can be arranged one behind the other are present, each by a centering Ring area are separated from each other. The combustion gases gradually relax in the expansion rooms; from the rearmost expansion room leak gas, but only with excess pressure, that no longer allows a disturbing expansion bang. When putting on and especially when removing the Muffler preferably no longer has to be the annoying, mutual Engagement of the mating surfaces over the entire length the fit are overcome, but only in each case over the length of a ring area.

It should also be noted that the ring areas only very much are short; preferably only two ring areas are provided. The corresponding mating surfaces and fitting holes are with the desired quality (finished or grated) easier to manufacture than a continuous, long Mating surface or fitting bore.

Are, as preferred (claim 2), the ring areas after continuously increased in diameter at the back, then it suffices inserting or removing the silencer in relation on the run over a total of only one length that the corresponds to the longest ring area since the outer circumference of the barrel in the foremost ring area no longer on the larger inner circumference of the muffler or its retaining attachment can sit in the rearmost ring area.

It should be noted that the centering only the distance between the foremost and rearmost ring area is dependent.

It is therefore quick to put on and take off the Muffler possible. However, this must be done after Put on still be attached to the barrel by means of the lock.

A bayonet lock can be provided as a lock be the grain base on the front if necessary Grips at the end of the barrel. The disadvantage in this case however, the fact that the muffler when touching down on the grain base or on a similar projection must be aligned. According to the invention proposed (claim 3) that a sprung Crossbar is provided, which by a suspension in a Circumferential groove pressed into the outer surface of the barrel becomes.

By pressing the crossbar against the spring action it can be pushed back across the Bore axis. Then the silencer can easily be pushed onto or removed from the barrel.

According to the invention, this configuration can also be achieved be improved (claim 4) that with two mating surfaces with different diameters between these one gentle bevel is formed, and that the circumferential groove arranged behind the fitting surface with a larger diameter is. so the latch can run on the bevel and be moved transversely to the axis of the soul until it is in the circumferential groove incident. Pressing the latch is at It is not necessary to slide the silencer onto the barrel.

In this case, the expansion space is run through the bevel limits.

With a bracket of the type described last after a large series of shots on the bolt traces of smoke found without an expansion bang when firing would have been heard. The expansion space therefore has reduce the pressure in front of the rear ring area sufficiently, about the occurrence of a disturbing expansion bang to prevent.

Fig. 1

eine perspektivische Ansicht eines Schalldämpfers mit erfindungsgemäßem Halteansatz,

Fig. 2

den Halteansatz der Fig. 1 vergrößert und im Längsschnitt, und

Fig. 3

den vorderen Teil eines Laufes mit dem Gegenansatz, im gleichen Maßstab wie in Fig. 2.

The subject matter of the invention is explained in more detail, for example, using the attached schematic drawing of a preferred exemplary embodiment. In this shows:

Fig. 1

2 shows a perspective view of a muffler with a holding attachment according to the invention,

Fig. 2

1 enlarged and in longitudinal section, and

Fig. 3

the front part of a barrel with the counter shoulder, on the same scale as in Fig. 2nd

In Fig. 1, a silencer 1 is shown, which at its Back has a retaining lug 3, which in turn is set up to counter the approach of a barrel muzzle 5 (Fig. 3) to be put on. 3 is one Muzzle 5 shown, in which the counterpart integrated is. The counter-approach can also be used separately, if necessary made by the barrel muzzle and then on this gas-tight, for example by soldering.

The holding approach 3 (Fig. 2) is made of a front part 7 and a rear part 9 constructed.

The front part 7 is a turned part with an external fine thread 11 for screwing on the silencer or its outer tube, the one on the seat 13 to the front part 7 is exactly centered. Behind the external fine thread 11 is an external fine thread 15 for screwing the rear part 9 is formed.

The front part 7 is pierced in the middle, the diameter the hole rises from front to back and front (in the drawing on the left) begins with a measurement that is only slightly larger than the diameter of barrel 5 missile projectiles.

After a short distance, the hole increases to one front cylindrical fitting bore 17. The bore ends on the back of the front part 7 in a rear, cylindrical Fitting bore 19, the diameter of which is clear is larger than that of the front fitting bore 17. From the front fitting hole 17 expanded to the rear fitting hole 19 the bore through a conical bore section 21st

The front end of the barrel mouth 5 has a cylindrical Outside on a front fitting cylinder 23rd forms the when inserted into the front fitting bore 17th sits in this without play. The muzzle 5 sits on the shoulder between the front fitting hole 17 and the front portion of the bore of the front part 7 is formed.

Behind the front fitting cylinder 23 is on the outside the barrel 5 is formed a rear fitting cylinder 25, whose position and diameter are determined so that it with little play engages in the rear fitting bore 19, when the front fitting cylinder 23 is just in the front Fitting bore 17 sits.

A section with a cylindrical outer surface 27 connects on the outside of barrel 5, the two fitting cylinders 23, 25. This section 27 can also be designed as a thread his.

When the front part 7 is pushed fully onto the barrel 5 then it is exactly centered by two fits that by sitting in the front fitting bore 17 without play front fitting cylinder 23 and in the rear fitting hole 19 rear fitting cylinder 25 with no play are formed.

The inner surface 21 of the bore of the front part and the Outside surface 27 of barrel 5 together define a spacious Annulus, which is when the front part 7 on the barrel 5 is pushed between the snug fit 17 and the seat 19 forms an expansion space. Gas that resulted the high overpressure penetrates the first fit 17, 23, first fills the expansion space and tries only then, through the second seat 19, 25 to the outside to penetrate. But since the pressure before the first fit 17, 23 drops rapidly, the pressure in the expansion space can increase only moderately. So much gas from the expansion room through the second seat 19, 25 to the outside into the ambient air penetrates, the gas emerges with such a low Overpressure to the outside, that no or no noticeable expansion bang is caused.

If an annoying expansion bang still occurs, can easily be another expansion space behind the rear seat 19, 25 and an additional, rearmost Fit to be provided.

The cylinder 25 forms a collar, to which the diameter the run 5 rises steadily from the front. Behind the The diameter falls to form a paragraph from, which extends at right angles to the soul axis 35. This paragraph limits an annular groove 33 in the front Outside of barrel 5.

This ring groove 33 is seated with the muffler in place and in a recess of the rear part 9 a bolt 29, which is movable transversely to the axis of the soul 35 and in this Movement led through the back of the front part 7 becomes.

The bolt 29 is designed as a flat circular ring with an inner diameter that is a little larger than that Diameter of the rear fitting cylinder 25. On the outside diameter the ring has a radially outwardly extending one Extension, which is characterized by a recess in the The rear part 9 extends outwards and forms a handle. Opposite this handle is a compression spring 31 provided between the bar 29 and the inner surface of the rear part 9, and the bolt 29 and tries to push its handle outwards.

Latch 29 and spring 31 are from the front in the rear 9 inserted. Then the front part 7 with its fine thread 15 screwed into the rear part 9, so that the front part 7 the space for movement of the latch 29 limited.

The silencer 1 with the bracket 3 from the front pressed onto barrel 5, then the cylinders slide 23, 25 in the fitting holes 17, 19. Simultaneously presses the increasing outer diameter of the barrel 5 before rear fitting cylinder 25 against the inside diameter of Riegel 29 and moves it transversely to the axis 35 of the soul and against the action of the compression spring 32. So the slides Bolt 29 back over the rear cylinder 25 until he at the paragraph delimiting this backwards into the Groove 33 of barrel 5 collapses. At the same time bumps the front End of barrel 5 at the end of the front fitting cylinder 23 against the foremost step of the hole in the front part 7 of the retaining lug 3, so that the silencer 1 the barrel 5 is attached exactly centrally and firmly. The conical bore 21, which ultimately limits the expansion space, leads the front end of the barrel 5, so that seats 17, 23 and 19, 25 can be easily manufactured. Finally, the latch 29 snaps after becoming more and more radial was moved against the spring 31, back, engages behind the shoulder that forms the front wall of the annular groove 33. Therefore, the silencer is, so to speak, with only attachable firmly and precisely with a single hand movement.

To remove the handle of the bolt 29 must be pressed and the muffler 1 is pulled forward from the barrel 5 become. It is possible that the seats 17, 23 and 19, 25 are baked by powder smoke, so that a increased effort is necessary. But this only has to be applied over the fairly short distance that the axial length of one of the fits 17, 23 and 19, 25 corresponds. The effort is only about one Fifth of what would be required if a continuous Fit would be available from the front to rear fit is sufficient.

The latch 29 is slightly beveled on its front part, so that when he hits the front wall of the groove 33 is present, the barrel 5 powerfully into the front part 7 suppressed.

Claims (5)

1. A mounting for fixing a silencer (1) on the barrel (5) of a small arm, having

   a retaining projection (3), which is mounted or constructed on the silencer (1), and which comprises a centring bore arrangement (17, 19),

   a counter-projection, which is mounted or constructed on the barrel (5) and comprises a central locating surface arrangement (23, 25) fitting into the bore arrangement (17, 19), and

   a detachable catch (29) for fixing the retaining projection (3) on the counter-projection, wherein

   the bore arrangement (17, 19) and the locating surface arrangement (23, 25) are seated in centring manner one on another in a seating zone, and wherein

   at least one expansion chamber (21, 27) is formed between the two axial ends of the seating zone.
2. A mounting according to Claim 1,
   characterised in that the rearmost portion (19, 15) of the seating zone has a larger diameter than the foremost portion (17, 13) of the seating zone.
3. A mounting according to one of Claims 1 or 2,
   characterised in that a transversely movable, spring-loaded (31) lock (29), which engages in a circumferential groove (33) of the outer surface of the barrel (5), is constructed behind the rearmost portion (19, 25) of the seating zone as a catch.
4. A mounting according to Claim 3,
   characterised

   in that at the front end the barrel (5) comprises a front circumferential locating surface (23) and spaced behind it a rear circumferential locating surface (25),

   in that the transition from the front (23) to the rear (25) circumferential locating surface is rounded, and in that the circumferential groove (31) is constructed behind the rear circumferential locating/seat-engaging surface (25).
5. A mounting according to one of Claims 3 or 4,
   characterised in that the front surface of the lock (29) is bevelled so that with continuous engagement into the circumferential groove (33) the lock (29) increasingly lies against its front wall and at the same time presses the counter-projection into the retaining projection (3).

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