Recoil brake and barreled firearm

Abstract

A recoil brake for braking recoiling masses of a barreled firearm, comprising a hollow cylinder, which has an interior filled with a fluid and having a high-pressure side and a low-pressure side, a control rod arranged in the hollow cylinder, which has an end connected to the hollow cylinder, a piston rod surrounding the control rod, which is arranged within the hollow cylinder for movement in an axial direction of the hollow cylinder, a piston being formed on the piston rod, which is arranged for displacement in the axial direction and which fluidically separates the high-pressure side from the low-pressure side. A distance by which the piston is displaceable in the axial direction is at least as great as the recoil distance of the recoiling masses during a passage of a bullet through the barreled firearm.

Claims

1. A recoil brake for braking recoiling masses of a barreled firearm, the recoil brake comprising: a hollow cylinder, which has an interior filled with a fluid; a control rod arranged in the hollow cylinder that has an end connected to the hollow cylinder; a piston rod that surrounds the control rod and is arranged within the hollow cylinder for movement in an axial direction of the hollow cylinder; and a piston is formed on the piston rod and is arranged for displacement in the axial direction and fluidically separates a high-pressure side from a low-pressure side of the interior, wherein a control gap is formed within the piston rod in between an inner surface of the piston rod and an outer surface of the control rod, the control pap connecting the high-pressure side and the low-pressure side, wherein the piston rod has at least one opening, which connects the high-pressure side and the control gap to each other, the at least one opening being arranged in front of an idle position of the piston, and wherein the control gap communicates with the high-pressure side and the low-pressure side in the idle position of the piston.

2. The recoil brake according to claim 1, wherein the piston fluidically separates the high-pressure side from the low-pressure side such that a fluidic communication between the high-pressure side and the low-pressure side through the piston is prevented in an area between an outer contour of the piston rod and an inner contour of the hollow cylinder.

3. The recoil brake according to claim 1, wherein a distance, by which the piston is axially displaceable in the axial direction, is at least as great as a recoil distance of the recoiling masses during a passage of a bullet through the barreled firearm.

4. The recoil brake according to claim 1, wherein the piston has two essentially radially running end faces.

5. The recoil brake according to claim 4, wherein one of the two end faces of the piston is a high-pressure-side end face, whose entire end face corresponds to the high-pressure side in the idle position of the piston.

6. The recoil brake according to claim 5, wherein another one of the two end faces of the piston is a low-pressure-side end face, whose entire end face corresponds to the low-pressure side at all times.

7. The recoil brake according to claim 1, wherein the piston rod has an essentially cylindrical outer contour over an entire length.

8. The recoil brake according to claim 1, wherein the piston has a chamfer on a high-pressure-side end face, which has a same angle of inclination as the at least one opening.

9. The recoil brake according to claim 1, further including a stop element arranged on the piston rod for providing an end stop in an end position of the piston.

10. A barreled firearm comprising at least one of the recoil brake according to claim 1.

11. A recoil brake for braking recoiling masses of a barreled firearm, the recoil brake comprising: a hollow cylinder, which has an interior filled with a fluid; a control rod arranged in the hollow cylinder that has an end connected to the hollow cylinder; a piston rod that surrounds the control rod and is arranged within the hollow cylinder for movement in an axial direction of the hollow cylinder; and a piston is formed on the piston rod and is arranged for displacement in the axial direction and fluidically separates a high-pressure side from a low-pressure side of the interior, wherein a control gap is formed within the piston rod in between an inner surface of the piston rod and an outer surface of the control rod, the control gap connecting the high-pressure side and the low-pressure side, wherein the piston rod has at least one opening, which connects the high-pressure side and the control gap to each other, and wherein the piston is displaceable between an idle position and an end position and the control gap is not closed by the piston when the piston is in the idle position, the end position or a position between the idle position and the end position.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein the sole FIGURE shows a schematic sectional representation of a recoil brake according to the invention.

DETAILED DESCRIPTION

(2) The FIGURE shows a schematic sectional representation of a recoil brake 1 according to the invention. Recoil brake 1 is provided for braking recoiling masses of a barreled firearm. Recoil brake 1 includes a hollow cylinder 10, which has an interior 11 filled with a fluid. Interior 11 has a high-pressure side 14 and a low-pressure side 12.

(3) Recoil brake 1 further comprises a control rod 40 arranged in hollow cylinder 10. Control rod 40 has an end 42, which is connected to hollow cylinder 10. Control rod 40 and hollow cylinder 10 are preferably screwed to each other for this purpose. Control rod 40 is thus not movable relative to hollow cylinder 10 in the mounted state.

(4) Recoil brake 1 further comprises a piston rod 30, which surrounds control rod 40 and is arranged within hollow cylinder 10 for movement relative to hollow cylinder 10 and control rod 40 in an axial direction A of hollow cylinder 10. As is apparent from FIG. 1, piston rod 30 is a tubular component, in which control rod 40 is arranged.

(5) Hollow cylinder 10 of the recoil brake 1 is connected to a cradle of the barreled firearm, and piston rod 30 is connected to the recoiling masses of the firearm. However, it is also alternatively possible that hollow cylinder 10 is connected to the recoiling masses of the firearm, and piston rod 30 is connected to the cradle.

(6) A piston 20, which is displaceable in axial direction A, is further arranged within hollow cylinder 10. The outer diameter is dimensioned in such a way that it is slightly smaller than the inner diameter of hollow cylinder 10, so that they form a clearance fit, which makes it possible for piston 20 to be displaceable in axial direction A within hollow cylinder 10. Piston 20 further includes seals, so that it is sealed against hollow cylinder 10 at its outer diameter.

(7) Piston rod 30, which is displaceable relative to the piston, is supported within piston 20, so that piston 20, which is arranged for displacement in axial direction A and fluidically separates high-pressure side 14 from low-pressure side 12, is formed on piston rod 30. Piston 20 is displaceable axially along piston rod 30 between an idle position R and an end position E.

(8) A stop element 50 is also arranged on piston rode 30 at one end for providing an end stop in an end position E of piston 20. Stop element 50 is also used to hold an elastic 16 on piston rod 30 and to provide an end stop for elastic 16.

(9) The other side of the elastic 16 is supported on piston 20 and ensures that the latter may have a defined pretension with respect to stop element 50. In an example, the elastic 16 can be, for example, a spring. For this purpose, stop element 50 is, for example, screwed onto piston rod 30 or secured by a screw.

(10) Piston 20, which is arranged for displacement in axial direction A and fluidically separates high-pressure side 14 from low-pressure side 12, is formed on piston rod 30. Piston 20 is displaceable axially along piston rod 30 between an idle position R and an end position E. Idle position R defines a position of piston 20 before a bullet is fired, and end position E of piston 20 is defined by stop element 50 arranged on piston rod 30. Piston 20 and piston rod 30 are furthermore axially displaceable together relative to hollow cylinder 10.

(11) Piston 20 fluidically separates high-pressure side 14 from low-pressure side 12 in such a way that no fluidic communication between high-pressure side 14 and low-pressure side 12 through piston 20 is formed, in particular in an area B between an outer contour of piston rod 30 and an inner contour of hollow cylinder 10. Instead, the fluid for fluidic communication must flow through a control gap 34, which connects high-pressure side 14 to low-pressure side 12.

(12) Control gap 34 is formed within piston rod 30, in particular between piston rod 30 and control rod 40. Piston rod 30 has at least one opening 32, which connects high-pressure side 14 and control gap 34 to each other, opening 32 being arranged in front of idle position R of piston 20. Alternatively, the at least one opening 32 may also be arranged in such a way that it is only exposed by the displacement of piston 20 on piston rod 30.

(13) The other side of control gap 34 is connected to low-pressure side 12 via a further opening, so that control gap 34 connects high-pressure side 14 and low-pressure side 12 to each other.

(14) A distance L by which piston 20 is axially displaceable in axial direction A, is at least as great as the recoil distance of the recoiling masses during a passage of a bullet through the barreled firearm, i.e. the distance covered by the recoiling masses until the bullet leaves the firearm barrel.

(15) While the firearm barrel is being braked by recoil brake 1, and piston rod 30, together with piston 20, is moving through hollow cylinder 10, the pressure is higher on high-pressure side 14 than on low-pressure side 12.

(16) Piston 20 has two essentially radially running end faces 22, 24. One of the two end faces 22, 24 is a high-pressure-side end face 24, whose entire end face 24 corresponds to high-pressure side 14 in an idle position R. The other end face is a low-pressure-side end face 22, which corresponds to low-pressure side 12 at all times.

(17) Piston 20 has a chamfer 28 on high-pressure-side end face 24, which has the same angle of inclination as opening 32. Contour 33 of opening 32 is elongated by chamfer 28 of piston 20 in idle position R illustrated in FIG. 1.

(18) Low-pressure-side end face 22 has a groove, in which the elastic 16 is supported.

(19) If a bullet is fired and moves through the barrel, the recoiling mass of the barreled firearm recoils. Piston rod 30, which is also connected to the recoiling parts of the barreled firearm, also recoils, so that piston rod 30 is displaced relative to piston 20 within hollow cylinder 10 of recoil brake 1 in axial direction A. Piston 20 remains in its position, due to its inertia of mass. This relative displacement continues while the bullet moves through the barrel. Distance L by which piston 20 is axially displaceable on piston rod 30 is dimensioned in such a way that piston rod 30 moves relative to piston 20 for the entire length of time needed by the bullet to pass through the firearm barrel, and the recoiling mass may recoil without being braked. In other words, the size of distance L between idle position R and end position E of piston 20 on piston rod 30 is selected in such a way that the bullet has left the firearm barrel before piston 20 rests against stop element 50.

(20) The elastic 16, which may be designed as a spring, in particular as a pressure spring, is compressed while piston 20 is recoiling on piston rod 30. Only when the bullet has left the firearm barrel does piston 20 reach stop element 50 and is carried along by piston rod 30, so that piston 20 and piston rod 30 move together through hollow cylinder 10 of recoil brake 1 from this point in time on, and the braking effect of recoil brake 1 sets in. For this purpose, the fluid is pressed through the at least one opening 32 in piston rod 30 by control gap 34 from high-pressure side 14 to low-pressure side 12, whereby the brake pressure builds up and the braking force of the recoil brake is generated.

(21) To the extent that the above disclosure relates to a recoil brake 1 as such, it is also considered to be simultaneously disclosed for a barreled firearm including a recoil brake 1 of this type.

(22) The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.