Breech drive for a weapon
First Claim
1. A drive operably connected to a breech carrier of a weapon, wherein a breech is moveable with the breech carrier in an axial direction with respect to a weapon barrel of the weapon, wherein the drive comprises(a) a motor;
- (b) a crank operably connected to be driven by the motor, wherein the crank is provided with a first groove formed in the crank;
(c) a crank pin having at least one roller and a guide block fitted to the crank pin, wherein the crank pin is disposed in the first groove of the crank; and
(d) a first control cam, wherein the crank pin is positively guided in the first control cam, wherein the crank is rotated about a rotation axis by the motor, and the guide block is disposed to engage in a second groove formed in the breech carrier, wherein the second groove is arranged transversely with respect to a firing direction of the weapon, so that movements of the breech in the firing direction are predetermined by the first control cam and are transmitted to the breech via the crank pin and the breech carrier, and movements of the crank pin transversely with respect to the firing direction result in relative movement of the guide block of the crank pin with respect to the second groove formed in the breech carrier.
1 Assignment
0 Petitions
Accused Products
Abstract
A drive for a weapon is provided, wherein rotational motion of a motor is converted to a forward or reverse motion of the breech in a simple manner using the Scotch yoke principle. In order to allow rest periods of the breech in the end positions, the crank radius is defined by a control cam, which changes when the crank is rotated. The hinge pin of the crank may be externally driven via a pinion shaft. A yoke pin is arranged in a groove of the crank so as to be radially displaceable and carries the breech carrier or the breech in a groove extending transversely to the direction of fire via a sliding block. Two rollers are arranged on the crank pin and run in control cams in the weapon or crank housing. The control cam is subdivided into different sectors/sections, thereby achieving the desired motion of the breech.
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Citations
20 Claims
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1. A drive operably connected to a breech carrier of a weapon, wherein a breech is moveable with the breech carrier in an axial direction with respect to a weapon barrel of the weapon, wherein the drive comprises
(a) a motor; -
(b) a crank operably connected to be driven by the motor, wherein the crank is provided with a first groove formed in the crank; (c) a crank pin having at least one roller and a guide block fitted to the crank pin, wherein the crank pin is disposed in the first groove of the crank; and (d) a first control cam, wherein the crank pin is positively guided in the first control cam, wherein the crank is rotated about a rotation axis by the motor, and the guide block is disposed to engage in a second groove formed in the breech carrier, wherein the second groove is arranged transversely with respect to a firing direction of the weapon, so that movements of the breech in the firing direction are predetermined by the first control cam and are transmitted to the breech via the crank pin and the breech carrier, and movements of the crank pin transversely with respect to the firing direction result in relative movement of the guide block of the crank pin with respect to the second groove formed in the breech carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A drive operably connected to a breech carrier of a weapon, wherein a breech is moveable with the breech carrier in an axial direction with respect to a weapon barrel of the weapon, wherein the drive comprises
(a) a motor; -
(b) a crank operably connected to be driven by the motor, wherein the crank is provided with a first groove formed in the crank; (c) a crank pin having at least one roller and a guide block fitted to the crank pin, wherein the crank pin is disposed in the first groove of the crank; and (d) a first control cam, wherein the crank pin is positively guided in the first control cam, wherein the crank is rotated about a rotation axis by the motor, and the guide block is disposed to engage in a second groove formed in the breech carrier, wherein the second groove is arranged transversely with respect to a firing direction of the weapon, so that movements of the breech in the firing direction are predetermined by the first control cam and are transmitted to the breech via the crank pin and the breech carrier, and movements of the crank pin transversely with respect to the firing direction result in relative movement of the guide block of the crank pin with respect to the second groove formed in the breech carrier, and wherein the first control cam is integrated in a housing lower part of a weapon housing or of a crank housing of the weapon. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A drive operably connected to a breech of a weapon, wherein the breech is moveable in an axial direction with respect to a weapon barrel of the weapon, wherein the drive comprises
(a) a motor; -
(b) a crank operably connected to be driven by the motor, wherein the crank is provided with a first groove formed in the crank; (c) a crank pin having at least one roller and a guide block fitted to the crank pin, wherein the crank pin is disposed in the first groove of the crank; and (d) a first control cam, wherein the crank pin is positively guided in the first control cam, wherein the crank is rotated about a rotation axis by the motor, and the guide block is disposed to engage in a second groove formed in the breech, wherein the second groove is arranged transversely with respect to a firing direction of the weapon, so that movements of the breech in the firing direction are predetermined by the first control cam and are transmitted directly to the breech, and movements of the crank pin transversely with respect to the firing direction result in relative movement of the guide block of the crank pin with respect to the second groove formed in the breech.
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20. A drive operably connected to a breech of a weapon, wherein the breech is moveable in an axial direction with respect to a weapon barrel of the weapon, wherein the drive comprises
(a) a motor; -
(b) a crank operably connected to be driven by the motor, wherein the crank is provided with a first groove formed in the crank; (c) a crank pin having at least one roller and a guide block fitted to the crank pin, wherein the crank pin is disposed in the first groove of the crank; and (d) a first control cam, wherein the crank pin is positively guided in the first control cam, wherein the crank is rotated about a rotation axis by the motor, and the guide block is disposed to engage in a second groove formed in the breech, wherein the second groove is arranged transversely with respect to a firing direction of the weapon, so that movements of the breech in the firing direction are predetermined by the first control cam and are transmitted directly to the breech, and movements of the crank pin transversely with respect to the firing direction result in relative movement of the guide block of the crank pin with respect to the second groove formed in the breech, and wherein the first control cam is integrated in a housing lower part of a weapon housing or of a crank housing of the weapon.
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Specification