Breech and barrel gun

Abstract

The invention relates to a breech block, in particular wedge breech block, having a breech end and a breech wedge, and comprising an opener shaft with a rotationally coupled opening lever and an ejector system for pulling out cartridge cases or cartridge bases from the breech block, said ejector system comprising at least one ejector and at least one ejector lever that actuates the ejector, the ejector lever being rotationally movably mounted on the opener shaft and the ejector system comprising at least one transmission element that transmits a rotational movement of the opening lever to the ejector lever.

Description

[0001] The invention relates to a closure having the features of the preamble of claim 1, according to GB 639 187 A.

[0002] Furthermore, the invention relates to a barrel weapon with such a weapon breech.

[0003] A wedge breech block for a barrel weapon is known from DE 10 2004 052 550 A1. The wedge breech block features a locking wedge that can be opened downwards perpendicular to the bore axis of the weapon barrel.

[0004] DE 198 43 294 C2 discloses a large-caliber barrel weapon with a barrel and a baseplate attached to the barrel on the breech side. A longitudinally displaceable catching and ejection device for securing and extracting rimless cartridge cases is formed on the baseplate. The ejector pivots against the pressure of a compression spring.

[0005] DE 41 33 618 C2 discloses an ejector system for barreled weapons featuring a linearly movable ejector actuated by an ejector lever. The ejector lever, in turn, is actuated by an actuating cam located on the breech wedge.

[0006] Based on this, the object of the invention is to create a closure which has an improved ejector system.

[0007] This object is achieved by the closure of claim 1. Furthermore, the object is achieved by a barrel weapon according to claim 8. Advantageous embodiments and further developments are the subject of the respective subclaims.

[0008] According to the invention, a closure, in particular a wedge closure, is provided with a base piece and a closure wedge, comprising an opener shaft with a rotationally fixedly connected opener lever and an ejector system for extracting cartridge cases or cartridge bases from the closure, comprising at least one ejector and at least one ejector lever which actuates the ejector, wherein the ejector lever is rotatably mounted on the opener shaft and the ejector system has at least one transmission element which transmits a rotational movement of the opener lever to the ejector lever.

[0009] Furthermore, according to the invention, a barrel weapon comprising at least one such closure or one further developed as described below is provided.

[0010] A barrel weapon is a barrel weapon with a recoiling mass that has at least a barrel and the breech.

[0011] The wedge breech block is in particular a vertical wedge breech block with a breech block that can be moved transversely to the bore axis of the weapon barrel between a closed and open position.

[0012] Furthermore, the closure has a locking mechanism through which the closure can be opened and closed.

[0013] The opening shaft and the opening lever, which is connected to the opening shaft for rotation, serve to move the locking wedge between an open and closed position. The opening shaft is driven by the locking mechanism.

[0014] At least one ejector lever is mounted on the opening shaft for rotation. A rotational movement of the opening shaft is not transmitted directly to the ejector lever, but rather the rotational movement of the opening shaft is transmitted to the ejector lever via the transmission element.

[0015] The ejector lever actuates the ejector, which in turn ejects the cartridge case or the cartridge base.

[0016] According to the invention, a closure with a compact ejector system is created that avoids direct contact between the opening lever and the ejector lever. According to the invention, the rotational movement of the opening lever is first transmitted to the transmission element, which in turn transmits the rotational movement to the ejector lever. This prevents a direct impact or shock-like actuation of the ejector lever by the opening lever. This ensures less wear on the opening lever and the ejector lever, thus achieving an improved service life.

[0017] According to the invention, the transmission element is mounted on a first axis which is spaced from the opening shaft.

[0018] This ensures that the rotary movement of the opening lever does not have to be transferred directly to the ejector lever, but that the transmission element is arranged as an intermediate element between the ejector lever and the opening lever and can transfer or reduce the rotary movement of the opening lever to the ejector lever.

[0019] A further advantage is that the transmission element can be changed independently of the opener shaft and the ejector lever due to the bearing on the first axis, ensuring easy assembly and disassembly of the transmission element.

[0020] In a design of the closure, it can be provided that the ejector system has at least one first contact roller arranged at one end of the transmission element for contact with the opening lever and at least one second contact roller arranged at the first end of the transmission element for contact with the at least one ejector lever.

[0021] This ensures that a rolling action occurs between the contact rollers of the transmission element and the respective lever being contacted. Frictional losses between the opening lever and the first contact roller, as well as between the ejector lever and the second contact roller, are thus avoided. This leads to reduced wear and an increased service life of the ejector system of the closure according to the invention.

[0022] Preferably, a first contact roller is formed for each opening lever and a second contact roller is formed for each ejector lever.

[0023] Preferably, the at least one first contact roller and the at least one second contact roller are arranged on a common second axis.

[0024] In the design of the closure, it can be provided that the ejector system has at least one pretensioning element that pretensions the transmission element relative to the at least one ejector lever.

[0025] This ensures that the transmission element and ejector lever are in contact with each other at all times, and thus also with the case base. When an ejector movement begins and the ejectors are actuated, they are already in contact with the case base to be ejected.

[0026] The preload element can be designed, for example, as a spring or as a spring-damper system.

[0027] In an advantageous development of the closure, it can be provided that the at least one ejector lever has a lever arm with an arcuate contact surface which is permanently in contact with the at least one second contact roller.

[0028] This ensures that the rotational movement of the opening lever is not transferred linearly to the ejector lever, but rather that the angle of rotation of the ejector lever describes a degressive or progressive characteristic curve in relation to the angle of rotation of the opening lever. Accordingly, the ejector describes a corresponding degressive or progressive characteristic curve in relation to the forward movement. Thus, the shape of the arcuate contact surface can predetermine the movement characteristics of the ejector. Likewise, the movement characteristics of the ejector can be adjusted by changing the ejector lever.

[0029] This changes the contact direction of the ejector / opener shaft axis. As the angular velocity of the opener lever remains constant, the transmission behavior changes.

[0030] Furthermore, it can be provided that the contact surface is designed to be substantially concave, so that the angle of rotation of the rotary movement of the ejector lever describes a progressive characteristic curve compared to the angle of rotation of the rotary movement of the opening lever when opening the closure.

[0031] The progressive characteristic curve ensures that a cartridge base or cartridge to be ejected is continuously accelerated throughout the ejection process, thus ensuring safe ejection of the cartridge or cartridge base.

[0032] In a further development of the closure, it can be provided that the opening lever is designed in such a way that it is not in contact with the first contact roller in the open position of the closure and the first contact roller can be brought into contact with the opening lever during the opening process.

[0033] This ensures that there is no permanent contact between the opening lever and the ejector lever, thus preventing pre-tensioning between these elements. This prevents the pre-tensioning elements of the ejector system from becoming worn out.

[0034] The invention will be explained below using an embodiment with reference to the drawings.

[0035] They show: Fig. 1 is a schematic perspective view of the closure according to the invention with an ejector system; Fig. 2 is a schematic perspective enlarged view of the closure with the ejector system ofFigur 1 ; Fig. 3a a schematic side view of the ejector system of the closure according to the invention, wherein the closure wedge is in the closed position; Fig. 3b a schematic side view of the ejector system of the closure according to the invention according to Fig. 3a , wherein the locking wedge is in the open position; Fig. 4 is a schematic diagram of the angle of the opening lever and the angle of the ejector lever with respect to the forward movement; Fig. 5a is a schematic rear view of the lock according to the invention in the open position; Fig. 5b is a further schematic rear view of the lock according to the invention in the open position.

[0036] Fig. 1 shows a schematic perspective view of the breechblock 10 according to the invention with an ejector system 30. The breechblock 10 is preferably a weapon barrel breechblock, in particular a wedge breechblock with a base piece 12 and a breechblock wedge 14.

[0037] The bolt is part of a tube weapon 1, not shown in detail.

[0038] The closure 10 further comprises an opening shaft 20 with a rotationally fixed opening lever 22. The opening shaft 20 is mounted on the underside of the base piece 12 by means of several opening shaft bearings 24.

[0039] Furthermore, the opening shaft 20 has a gear wheel via which the opening shaft 20 can be driven.

[0040] The breechblock 10 further comprises an ejector system 30 for extracting cartridge cases or cartridge heads from the breechblock 10. The ejector system 30 comprises at least one ejector 32 and at least one ejector lever 34 which actuates the ejector 32.

[0041] The ejector lever 34 is rotatably mounted on the opening shaft 22 and the ejector system has at least one transmission element 40 which transmits a rotational movement of the opening lever 22 to the ejector lever 34.

[0042] Fig. 2 shows a schematic perspective enlarged view of the closure with the ejector system 30 from Fig. 1 . As from Fig. 2 As can be seen more clearly, the transmission element 40 is mounted on a first axis 43, which is spaced from the opening shaft 20. The first axis 43 is attached to the underside of the base piece 12 with corresponding bearings, which support the axis 43.

[0043] At one end 41a of the transmission element 40, at least one first contact roller 42 is arranged for contact with the opening lever 22. Furthermore, at least one second contact roller 44 is arranged for contact with the at least one ejector lever 34 at the first end 41a of the transmission element 40.

[0044] The at least one first contact roller 42 and the at least one second contact roller 44 are arranged on a common second axis 46.

[0045] The ejector system 30 has at least one biasing element 50 that biases the transmission element 40 relative to the at least one ejector lever 34. According to the embodiment, the biasing element 50 is a spring arranged at a second end 41b of the transmission element 40.

[0046] As in Fig.1 and Fig.2 As shown, the transmission element 40 is designed in the form of a lever. As shown in Fig. 3a As can be seen, the first end 41a has two fork-like projections on which the axis 46 is arranged. The second end 41b is arranged on the opposite side of the transmission element 40 and is angled relative to the first end 41a.

[0047] In Fig.1 and Fig. 2 It can be seen that two ejector levers 34 are formed, for each of which a second contact roller 34 is formed.

[0048] Fig. 3a shows a schematic side view of the ejector system 30 of the closure 10 according to the invention, wherein the closure wedge 14 is in the closed position. Fig. 3b shows a schematic side view of the ejector system 30 of the closure 10 according to the invention according to Fig. 3a , with the locking wedge 14 in the open position.

[0049] The at least one ejector lever 34 has a first lever arm 36 with an arcuate contact surface 38 which is permanently in contact with the at least one second contact roller 44.

[0050] Furthermore, the ejector lever 34 has a second lever arm 38, as shown in Fig. 1 can be seen. The second lever arm 38 serves to actuate the ejector 32.

[0051] The contact surface 38 of the first lever arm 36 is essentially concave, so that the angle of rotation of the rotary movement of the ejector lever 34 describes a progressive characteristic curve compared to the angle of rotation of the rotary movement of the opening lever 22 when opening the closure 10.

[0052] The opening lever 22 is designed such that, in the open position of the closure 10, it is not in contact with the first contact roller 42 and the first contact roller 42 can be brought into contact with the opening lever 22 during the opening process.

[0053] As in Fig. 3a und Fig. 3b As can be seen, the opening lever 22 has a projection with a contact surface 23, which can be brought into contact with the first contact roller 42. The contact surface 23 of the opening lever 22 is essentially flat.

[0054] Fig. 4 shows a schematic diagram of the angle of rotation of the opening lever 22 and the angle of rotation of the ejector lever 34 with respect to the forward movement. The diagram shows that, with respect to the forward movement, the angle of rotation of the opening shaft 20 changes linearly, and the angle of rotation of the ejector 32 describes a progressive characteristic curve.

[0055] Fig. 5 shows a schematic rear view of the breechblock 10 according to the invention in the open position with the cartridge chamber 11 open. The wedge breechblock 14 is in the open position and the ejector 32 is clearly visible. Figur 5 The view shown shows the ejector 32 after ejecting a cartridge base or cartridge case. BEZUGSZEICHENLISTE

[0056] 10 Bolt 11 Cartridge chamber 12 Base 13 Base opening 14 Bolt wedge 18 Opener shaft bearing 20 Opener shaft 22 Opener lever 23 Opener lever contact surface 24 Opener shaft bearing 30 Ejector system 32 Ejector 34 Ejector lever 36 Lever arm 38 Contact surface 40 Transmission element 41a First end 42 First contact roller 43 First axis 44 Second contact roller 46 Second axis 50 Preload element 100 Bolt mechanism

Claims

1. A breech block (10), in particular wedge breech block, comprising a breech end (12) and a breech wedge (14), comprising an opener shaft (20) having an an opening lever (22) attached to the opener shaft (20) in a rotationally fixed manner and an ejector system (30) to pull out cartridge cases or cartridge bases out of the breech block (10), comprising: at least one ejector (32) and at least one ejector lever (34) that actuates the ejector (32), wherein the ejector lever (34) is rotationally movably mounted on the opener shaft (20) and wherein the ejector system (30) comprises at least one transmission element (40) that is designed to transmit a rotational movement of the opening lever (22) to the ejector lever (34), characterized in that the transmission element (40) is mounted on a first axis (43) which is spaced from the opener shaft (20).

2. The breech block (10) according to claim 1, characterized in that the ejector system (30) has at least one first contact roller (42) arranged at an end of the transmission element (40) for contact with the opening lever (22) and has at least one second contact roller (44) arranged at the first end of the transmission element (40) for contact with the at least one ejector lever (34).

3. The breech block (10) according to claim 2, characterized in that at least the first contact roller (43) and the second contact roller (44) are arranged on a common second axis (46).

4. The breech block (10) according to one of claims 1 to 3, characterized in that the ejector system (30) has at least one preload element (50) which preloads the transmission element (40) against the at least one ejector lever (34).

5. The breech block (10) according to one of claims 2 to 4, characterized in that the at least one ejector lever (34) has a lever arm (36) with an arc-shaped contact surface (38) that is permanently in contact with the second contact roller (44).

6. The breech block (10) according to claim 5, characterized in that the contact surface (38) is substantially concave such that when opening the breech block (10) the rotation angle of the rotational movement of the ejector lever (34) describes a progressive characteristic curve in relation to the angle of rotation of the rotational movement of the opening lever (22).

7. The breech block (10) according to one of claims 2 to 6, characterized in that the opening lever (22) is designed in such a way that in the open position of the breech block it is not in contact with the first contact roller (42) and the first contact roller (42) can be brought into contact with the opening lever (22) in the course of the opening process.

8. A gun (1) comprising at least one breech block (10) according to one of claims 1 to 7.

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