EP0437736B1 - Demountable breech unit for a rifle - Google Patents

Description

The invention is directed to a sports or hunting rifle according to the preamble of claim 1 (see EP-A-0 228 548).

In known multi-barrel rifles, the striking pieces are generally radially striking and arranged side by side. Because of this relatively wide construction of the lock housing, the barrel of the rifle is weakened in the lock area.

From DE-A-1 903 798 a rifle lock for a multi-barrel break barrel weapon is known, in which striking elements, clamping elements and firing pins are arranged parallel to one another and can be moved in the same direction and these elements, which are designed as rotating parts, are guided in bores.

From DE-A-1 939 939 another rifle lock for a multi-barrel break barrel weapon is known, in which two strikes are also arranged one above the other, but are designed as stamped parts.

EP-A-0-228 548 describes a striking device with an integrated safety device for firearms, which has a frame which is located inside the base, e.g. a rifle, which is not shown, is housed. No indication is given that this striking device can be removed from the basket.

In contrast to this, it is stated in the catalogs "Frankonia Jagd", 81/82, page 33 and "Waffen-Frankonia Würzburg", 73/74, page 47 that the trigger groups in the shotguns described there can be removed completely with lock parts , but no security measures are recognizable.

The invention is based on the object, starting from EP-A-0 228 548, to design a rifle according to the preamble of claim 1 so that the lock housing can be inserted into or removed from the lock box on the one hand and a fuse is present on the other hand, so that the lock housing can only be removed and installed when the at least one striker is relaxed. This object is achieved by the measures according to the characterizing part of claim 1. After that is the one with the hammer connected guide pin in a special way, in addition to guiding the coil spring to take over security tasks. For this purpose, the guide pin is guided in the side of the lock housing facing away from the barrel and so long that it does not protrude from the rear wall of the lock housing when the striker is knocked off; simple measures on the lock box can prevent the protruding from the lock housing tip of the at least one guide pin that the lock housing can be removed if only a guide pin still protrudes from the lock housing; the lock housing can therefore only be inserted or removed when the at least one impact piece is relaxed.

An advantageous embodiment of the rifle with the removable lock housing is characterized in that there are bores in the one or more striking pieces, into which the coil springs partially protrude. In this way, a compact design can be achieved even with angular striking pieces.

In addition, according to a further development of the invention, it can also be achieved that the lock cannot be inadvertently tensioned when removed. This is achieved by a pressure pin that has grooves and is slightly offset from the plane of the guide pins in the lock housing so that the ends of the guide pins can only protrude from the rear wall of the lock housing when the guide pins can slide in the grooves of the pressure pin.

Preferably, there is a spring acting on the pressure pin, which can only be compressed to such an extent that the guide pins can slide in the grooves of the pressure pin only when the lock is installed. A maximum of security is thus achieved with simple means.

The one or more striking pieces have an angular, essentially rectangular shape in cross section and, according to a further proposal of the invention, are provided with grooves or edges and corresponding counter edges or grooves on the lock housing for their guidance. As a result, only a relatively narrow lock housing is required, in which the striking elements are guided in a simple manner and are inexpensive to manufacture.

Preferably, the parallel movement of the striking pieces in the lock housing is approximately the same direction as the movement of the striking pin. This minimizes the losses in energy transmission; a relatively low impact energy is sufficient. With such an arrangement, the stroke distance is short, which correlates with a quick ignition. Due to a smaller energy, preferably stored in a helical spring, the force required for tensioning is correspondingly lower and the pull-off resistance is lower.

It may be sufficient if, according to the invention, the lock housing has only one side wall parallel to the plane of the striking pieces, because the striking pieces can also be adequately guided from a side wall. The lock housing can be made particularly narrow without sacrificing precision and stability.

In the rifle according to the invention, the clamping pieces can be clamped directly by a linear movement of the clamping rod without any intermediate pieces; the movement of the tension rod and the movement of the striking pieces are approximately parallel. A further preferred embodiment is characterized in that the end of the tensioning rod presses on the lower striker during tensioning and thereby stretches, an extension is provided on the top striker which laterally overlaps the lower striker so that the end of the tensioning rod also opens when tensioned presses this approach and thus also tensions the upper striking piece. In this way, the simultaneous tensioning of the striking pieces arranged one above the other can take place without any special effort and without further deflection devices or translations.

If - as is often the case - only one trigger is provided, a changeover switch must be available for the striking elements arranged one above the other. In the rifle according to the invention, two advantageous embodiments are preferred in which the changeover can be carried out by means of a changeover bolt which can be moved transversely to the direction of travel. Such a switching pin has the advantage that the shooter no longer has to let go of the barrel already encompassed for switching the barrel. The transverse displacement of the switch pin is transferred to a switch rocker, which in turn adjusts an oscillating weight, via correspondingly running surfaces. In one embodiment, the oscillating weight is preferably perpendicular to the plane of the Striking pieces so displaceable that the swinging weight engages only on one of the trigger rods of the upper or lower striking piece. In another embodiment, the swinging weight is rotatable in the plane of the striking pieces so that it only engages on one of the trigger rods of the upper or lower striking piece.

Since the lock housing is very compact and in particular very narrow, the barrel of the rifle is not weakened in the lock area. The lock housing is inserted in a form-fitting manner in the lock case. To remove the lock housing, only a locking pawl has to be actuated, which clamps the lock housing best on the side facing away from the barrel and which should preferably only be operated when a safety slide attached to the top of the barrel is pushed back.

Figur 1

ein herausnehmbares Schloßgehäuie mit zwei gespannten Schlagstücken (am Ende des Spannvorganges bei abgeknickten Läufen);

Figur 2

ein herausnehmbares Schloßgehäuse mit abgeschlagenem Schlagstück für den oberen Lauf und Schußbereitschaft für den unteren Lauf.

The invention is illustrated by way of example in the drawing and further explained below. Show it:

Figure 1

a removable lock housing with two tensioned striking pieces (at the end of the tensioning process with kinked barrels);

Figure 2

a removable lock housing with a knocked-off hammer for the upper barrel and readiness to fire for the lower barrel.

Two operating states are shown in the figures, with the cut through the lock not always running consistently in the plane of the striking pieces to facilitate understanding. The angular, axially movable striking elements, which are arranged in parallel one above the other, are characteristic. Such a lock would also be used in a rifle with three barrels if one of the two striking pieces were assigned to a third barrel in a known manner by a switching mechanism, not shown here.

The size of a lock housing 1 is matched to a corresponding approximately cuboid breech box 2 in the rifle. A single locking pawl 50 is sufficient for fastening in the case of positive locking; it is only indicated by dashed lines in FIG. 2 in the rear wall 3 of the lock housing 1; it is arranged in the lock housing 1 offset to the plane of the striking pieces 4, 5 or the again slightly offset push pin 32.

The parallel, cross-sectionally impact pieces 4, 5 transmit the energy stored in tensioned coil springs 6, 7 to firing pins 8, 9. The coil springs 6, 7 are pushed over guide pins 10, 11. For reasons of space, the striking pieces 4, 5 have bores 12, 13 into which the guide pins 10, 11 protrude. They are connected to the striking elements 4, 5 at the bottom of the bores 12, 13. The bottom of the bore 12, 13 and the rear wall 3 of the lock housing 1 serve as a counter bearing for the coil springs 6, 7 For reasons of space, trigger rods 14, 15 are located in grooves 16, 17 of the striking elements 4, 5. The trigger rods 14, 15 are pivotally mounted about pivot points 18, 19 and are supported on support points 20, 21. The path of each striker 4, 5 to the striker 8, 9 is limited in a known manner by stops, not shown in the figure. Due to springs 22, 23, the trigger rods 14, 15 engage at the support points 20, 21 during tensioning.

When moving an oscillating weight 24 perpendicular to the direction of movement of the striking pieces 4, 5 (upward in the drawing), one of the trigger rods 14, 15 is pivoted via one of the catches 25, 26 and thus the blockage of the striking piece 4, 5 in question is released: the relevant one Striking piece 4, 5 meets the corresponding striking pin 8, 9.

The guide pins 10, 11 for the coil springs 6, 7 also assume an important securing function. The tips 27, 28 of the guide pins 10, 11 protrude from the rear wall 3 of the lock housing 1 in the tensioned state. Edges 29, 30 matched to the tips 27, 28 of the guide pins 10, 11 are present in the breech box 2 in the rifle, which in a simple manner prevents the lock housing 1 from being released from the breech box 2 (in the drawing downward) can be removed.

Tensioning of the striking pieces 4, 5 in the removed state is prevented by the guide pins 10, 11 in connection with a pressure pin 31. The push pin 31 is inserted into the rear wall 3 of the lock housing 1 such that when it is pressed by a matched pin 32 in the lock case 2 (down in the drawing), it becomes possible for the tips 27, 28 of the guide pins 10, 11 can be inserted through the rear wall 3, because grooves 33, 34 in the push pin 31 push the guide pins 10, 11 past the "obstacle push pin" 31 which is offset somewhat from the plane of the striking pieces 4, 5 enable. If the spring 35 were not compressed to the "correct" extent by the pressure pin 31, the grooves 33, 34 in the lock housing 1 would be too "high" or "deep", and the striking elements 4, 5 would be tensioned until the trigger rods 14, 15 snapped into place would be impossible.

As soon as the lock housing 1 is removed from the lock box 2 (which is only possible, as explained above, when both strikers 4, 5 are relaxed), the pressure pin 31 deflects upwards due to the spring 35. When the lock housing 1 is inserted, this safety device is switched off without any special action by the protection.

The striking pieces 4, 5 are tensioned by a tensioning rod 36. When the barrels are tilted, the tensioning rod 36 moves towards the lock housing 1 and thereby pushes the front side 37 of the lower striking piece 5 - if it should have been relaxed - against the coil spring 7 in the breech housing 1 until the trigger rod 15 engages behind the support point 21. In this lock construction, the tensioning of the striking piece by the tension rod 36 is particularly inexpensive and mechanically very simple. (Figure 1)

Due to a shoulder 38 on the upper striker 4 which overlaps the lower striker 5 so that the front surface 37a of the shoulder 38 is level with the front surface 37 of the lower striker 5, both or each striker can be individually tensioned by the tension rod 36 be recorded. This means that both striking pieces 4, 5 can be brought back into the cocked position when the barrels tip over, provided they have not remained cocked.

The striking pieces 4, 5 are released via a trigger lever 39 about a pivot point 40. When the trigger lever 39 is actuated, a trigger arm 41 is located in a bore in the trigger lever 39 is arranged to be longitudinally displaceable, raised, it in turn takes the oscillating weight 24 with it. In Figure 1, the swing weight 24 is blocked by the safety slide 42; when it is pushed into a central position (FIG. 2), in FIG. 1 as in FIG. 2 when the trigger lever 39 is actuated about the pivot point 40, the trigger rod 15 can be raised by the catch 26, as a result of which the trigger rod 15 is no longer through the support point 21 blocked: the striking piece 5 strikes, driven by the coil spring 7, on the lower striking pin 9, it being readily apparent that the direction of movement of the striking piece 5 does not deviate significantly from the moving direction of the striking pin 9, so that hardly any loss of energy transmission occurs.

As soon as the lower striking piece 5 has snapped towards the striking pin 9, the swinging weight 24 can be tilted somewhat by a spring 43 about a pivot point 48 and the upper catch 25 on the swinging weight 24 is brought into positive connection with the upper trigger rod 15, so that the upper catch 25 releases the blockage of the upper striking piece 4 when the oscillating weight 24 is moved again.

If the shooter wants the upper striker 4 to be triggered first (FIG. 1), he only needs to move a switch pin 44. The movement of the switching pin 44 takes place transversely to the level of the striking pieces 4, 5. In the switching pin 44, there is a groove with an inclined position, into which a ball head 45 is guided in connection with a switching rocker 46 such that the switching rocker 46 is about a pivot point 47 at Switching swiveled. The longer arm of the rocker switch 46 runs in a backdrop of the trigger arm 41 and moves it backwards. The swinging weight 24, which is movable about the pivot point 48, comes out of engagement with the trigger rod 15 at the catch 26, while the upper catch 25 engages with the swing weight 24 in the upper trigger rod 14. This has reversed the sequence of shots. As soon as the upper striking piece has been knocked off, the oscillating weight 24 is automatically engaged with the lower trigger rod 15 (FIG. 2).

If the lock housing 1 is to be removed, only one locking pawl 50 in the rear wall 3 of the lock housing 1 is to be actuated. It makes sense if the actuation of the spring-loaded locking pawl 50 can only take place when the safety slide 42 is secured on the top of the rifle. When the lock housing 1 is removed, which is only possible with relaxed strikers 4, 5, the pressure pin 31 is displaced in the axial direction by the spring 35, thereby automatically achieving a state in which the strikers 4, 5 cannot be tensioned.

A trigger guard 49 is integrally connected to the lock housing 1.

Claims (13)

1. Sporting or hunting rifle having at least one barrel, with there being allocated to said barrel a firing pin piece (4, 5) - driven striker pin (89), a lock housing (1) having a trigger device having a trigger arm (14, 15) and a firing pin (4, 5), which is driven by a helical spring (6, 7), has a bevelled and substantially rectangular shape in terms of its cross-section and is guided in the lock housing (1) so as to be axially movable, a cocking device having a cocking rod (36) and a safety slide (42), with the lock housing (1) being accommodated in a locking case (2) and held in the latter as a result of form-locking,
   characterised in that the lock housing (1) can be inserted into the locking case (2) and removed therefrom, and attached to the firing pin piece (4, 5) is a guide pin (10, 11) for guiding the helical spring (6, 7), and when the lock is cocked, the end (27, 28) of the guide pin (10, 11) protruding from the back wall (3) of the lock housing (1) so far that inserting the lock housing (1) into the locking case (2) or removing said lock housing (1) from said locking case (2) is prevented because of an edge (29, 30) in the locking case (2) which acts as an obstacle.
2. Rifle according to claim 1, characterised in that in the striking piece (4, 5) is a bore (12, 13), into which the helical spring (6, 7) partly protrudes.
3. Rifle according to claim 1 or 2, characterised in that, in the back wall (3) of the lock housing (1), there is a pressure pin (31), the pressure pin (31) has at least one groove (33, 34), the pressure pin (31) is arranged in the lock housing (1) in such a way that the end (27, 28) of the guide pin (10, 11) can protrude from the back wall (3) of the lock housing (13) only if the guide pin (10, 11) can slide in the groove (33, 34) of the pressure pin (31).
4. Rifle according to claim 3, characterised in that there is a spring (35) which acts on the pressure pin (31), and only when this spring is compressed to a determined extent is it possible for the guide pin (10, 11) to slide in the groove (33, 34) of the pressure pin (31).
5. Rifle according to one of the claims 1 to 4, characterised in that, in order to guide the firing pin piece (4, 5), there are slits or edges on the striking piece and the corresponding opposing edges or opposing slits are on the lock housing (1).
6. Rifle according to claim 5, characterised in that the lock housing (1) has only one side wall parallel to the firing pin piece (4, 5).
7. Rifle according to claim 6, characterised in that the side wall is used to guide the firing pin piece (4, 5).
8. Rifle according to one of claims 1 to 7, in which two firing pin pieces (4, 5) are arranged one above the other, characterised in that, when cocking, the end of the cocking rod (36) presses on the lower firing pin piece (5) and thereby cocks it, there is a shoulder (38) on the upper firing pin piece (4) that laterally overlaps the lower firing pin piece (5) in such a way that the end of the cocking rod (36) also presses on this shoulder (38) and consequently also cocks the upper firing pin (4).
9. Rifle according to one of the claims 1 to 8, in which rifle two firing pins (4, 5) are arranged one above the other, characterised in that provided on the trigger device is a change-over pin (44) which can be shifted transversely with respect to the line of the barrel and by means of which a swing weight (24), by way of which the triggering movement can be transferred to one of the trigger arms (14, 15) on the firing pin pieces (4, 5), can be so shifted and thereby so engages the trigger arms (14, 15) that the triggering movement leads only to the release of the upper or lower striking piece (4, 5).
10. Rifle according to claim 9, characterised in that the swing weight (24) can be shifted perpendicularly with respect to the plane of the firing pin pieces (4, 5) in such a way that it engages only at one of the trigger arms (14, 15) of the upper or lower firing pin piece (4, 5).
11. Rifle according to claim 9, characterised in that the swing weight (24) can be rotated in the plane of the striking pieces (4, 5) in such a way that it engages only at one of the trigger arms (14, 15) of the upper or lower firing pin piece (4, 5).
12. Rifle according to one of the claims 1 to 11, characterised in that the lock housing (1) fits into the locking case (2) in such a form-locking manner that a locking catch (50) which supports the back wall (3) of the lock housing (1) is sufficient for the form-locking fastening.
13. Rifle according to claim 12, characterised in that the locking catch (50) can be actuated by sliding back the safety slide (42) on the locking case (2).

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