JPH0573998B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention is an ammunition cartridge feeding device for automatic firearms, which includes an endless chain for transporting and storing ammunition cartridges, a drive device for the endless chain, and a device for combing ammunition cartridges from the endless chain. and a star-shaped carrier driven by the reseating of the gun barrel of the firearm for conveying the combed cartridge to the automatic weapon. (Prior Art) A cartridge feeding device of this type is known (West German Patent Specification No. 4252049 and U.S. Patent Specification No.
No. 4252049), which likewise has an endless chain for conveying and storing cartridges and is equipped with a combing device for combing out the cartridges by means of the conveying movement of the chain. The combing devices are located in both transport directions of the endless chain in a position to plow out the cartridges. This known device has a relatively large cartridge storage capacity. Additional equipment is therefore required for driving the conveying chain and the combing device. The endless chain is driven in both directions, so that two different cartridges can be closed at any time. Continuous fire weapons require very precise synchronization in order to immediately deliver another cartridge with each shot. This known cartridge feeding device has the following disadvantages. Additional equipment, such as a hydraulic motor, requires an energy source or pump. Furthermore, costly synchronization devices are required. The drive of the endless chain in two transport directions makes the combing device very difficult and leads to a complicated combing device. OBJECT OF THE INVENTION It is an object of the present invention to create a cartridge feeding device that does not require external drives and additional energy sources, is driven exclusively by the firearm, and is capable of feeding two types of cartridges. It is. (Means for Solving the Problem) This problem is to provide an ammunition cartridge supply device for an automatic firearm, including an endless chain for transporting and storing ammunition cylinders, a drive device for the endless chain, and a cartridge feeding device for an automatic firearm. In an automatic firearm cartridge feeder having a combing device for combing out the cartridges and a conveying star for conveying the cartridge to the firearm driven by the rear seat of the firearm's barrel, the endless chain drive device is It is connected to the star-shaped conveyor and has a storage spring for storing the energy generated during rearward seating of the gun barrel and for feeding the endless chain, as well as for stopping the conveying chain during the combing process. The present invention is solved by the cartridge feeding device in the automatic firearm, characterized in that it has an intermittent drive device that performs the operation. Effects of the Invention The use of a helical spring has the advantage that the energy used in rearning the gun barrel can first be stored and then used for driving the endless chain. This is necessary because very few cartridges can be accelerated by the rear gun barrel without the intermediate connection of the helical spring. The use of a Maltese cross transmission makes it possible to drive the combing device by means of a star carrier when the endless chain is stopped. DESCRIPTION OF THE PREFERRED EMBODIMENTS According to FIG. 1, one cartridge feeding device 11 and 12 is arranged on each side of the firearm 10, with reference to the axis 13 of the gun barrel 65 for the firearm 10. Since these two cartridge feeding devices 11, 12 are identical and mirror symmetrical, only the one device 12 on the right side of the firearm 10, viewed in the firing direction of the firearm, is now described. This right cartridge feeding device has an upper shaft 14 and a lower shaft 15. Two sprockets 16, 17 are fixed on the lower shaft 14 and on the upper shaft 15, the sprockets being shown in FIG. 1 only as circles, of which only one is shown. . 1st
According to the figure, an endless chain 18 is stretched across the two sprockets 16 and 17, and the endless chain is likewise shown only as a dash-dotted line. A plurality of cartridge supports are fixed to this chain 18, in which one cartridge 19 is located. Only four cartridges 19 are shown in FIG. In the present embodiment, a total of 20 cartridge supports 20 (see FIG. 4) are fixed to the chain 18, into which a total of 17 cartridges 19 are inserted.
By rotation of the shaft 14, the cartridge 19 is conveyed in the other direction by the conveying chain 18 into the range of the firearm 10 and from there fed into the gun barrel. axis 14
Manual or ratchet wheel 21 or gun barrel 6
It is driven by the rear seat of 5. There are two shafts 24 (FIG. 5) on the firearm 10, among which shaft 2 is shown in FIG.
Only numbers 2 and 23 are shown. These star-shaped carriers 24 are rotated in the direction of arrow A by the rear seat and restoring of the gun barrel. The drive of the star carrier 24 to the firearm 10 by rearning and restoring the gun barrel 10 is known and will not be described in detail here. One or other star carriers 24 can be driven. These star carriers 24 are connected via clutches 25 to the following drives of the cartridge feeders 11 and 12. This clutch 25 is the switching lever 2
It is turned on and off by 6. Switching lever 26
The clutch 25 is engaged in the position shown in the figure.
The cartridge feeding devices 11 and 12 can then be driven by the firearm 10. To disengage the clutch 25, the switching lever 26 is pivoted in the direction of arrow B to a position 26 of 30 DEG. There is a detent that can be shut off, so that the conveying chain 18 can be easily moved during engagement and disengagement of the clutch. This detent can be blocked by a blocking lever 27. To interrupt the detent, the blocking lever 27 is rotated through 90° in the direction of arrow D and the third
Occupy the position shown in the figure. If cartridge feeders 11 and 12 are driven by firearm 10, a detent must be engaged. In the position of FIG. 3 of the blocking lever 27, the detent is engaged and the transport chain 18 is prevented from being returned unintentionally. Of course, each cartridge feeder 11 and 12 has a detent, the detent of the right cartridge feeder 12 being omitted from FIG. 1 for clarity. The conveying chain 18 is moved forward and backward by the ratchet lever 21. There is a switching lever 28 for reversing the direction of movement. For reversal of the direction of movement, the switching lever 28 is moved to position 2 in the direction of arrow E.
Turned to 8. Of course, each cartridge feeder 11 and 12 has a ratchet lever 21 and a switching lever 28, both levers 21 and 28 of the left cartridge feeder 11 being omitted in FIG. 1 for clarity. According to FIG. 2, the ratchet levers 21 and 2
8 is located at the front of the cartridge feeder, while the aforementioned clutch 25 is located at the rear. The housing 29 of the cartridge feeding device 11, 12 has two hinges at the rear so that the entire device can be pivoted out of the range of the firearm. A bayonet bearing 31 is provided for locking the devices 11, 12 in the working position. According to FIG. 1, the lower shaft 15 rests on a movable bearing plate 32. By means of the screw 67 the bearing plate is moved in the direction of the arrow F, so that the conveying chain 18 can be tightened or loosened if necessary.
Such bearing plates 32 are at both ends of the lower shaft 15, so that the lower shaft 15 can be moved exactly parallel to the upper shaft 14. According to FIGS. 3 and 4, the aforementioned clutch 25 between the star carrier 24 and the drive of the cartridge feeding device 11, 12 already mentioned consists of a disk 33, which is connected to the shaft 34. Although it is arranged to be able to move upward, the rotation about the shaft 34 is fixed by two keys 35. The spring 36 connects the disk 33 to the gear 37
trying to be pushed against. The gear 37 is connected to the disk 33 by four bolts 38.
It is fixed to the gear 37 by this bolt 38, and in the insertion position, its head is attached to the hole 3 of the disc 33.
Enter 9. In FIG. 4, the shaft 38 of the gear 37
enters hole 39 in disk 33, whereby the clutch is shown in the engaged condition. Gear 37 has 4
In addition to the two shafts 38, four further pins or shafts 40 are fixed, which shafts engage in radial slots 42 of another disc 41. Therefore gear 3
The four pins 40 of 7 together with the slots 42 of the disc 41 form a kind of Maltese cross transmission device.
According to FIG. 3, the slit 42 of this disc 41 is funnel-shaped and curved, so that the radial outer end of the slit 42 is wider than the diameter of the pin 40. When the pin 40 enters the slit 42 of the disc 41 (during the rotation of the gear 37 in the direction of arrow A), and when the pin leaves the slit 42 again, some play occurs, which causes the disc to Gear 37 can be rotated by this amount of play without 41 moving, taking into account the kinematics of the Maltese cross. The other gear 43 is rigidly fixed to the disc 41, and the gear is intermittently fed by a Maltese cross. This gear 43 is always in mesh with another gear 44, and the other gear is supported on the upper shaft 14. This gear 4
Beside 4 is a housing 45 with a helical spring 46. The housing 45 is rotatably fixed on the upper shaft 14 by a key 47. According to FIG. 3, the inner end 48 of the helical spring 46 is attached to the gear 44;
The outer end 49 is fixed to the housing 45. When the gear 44 is driven by the Maltese crosses 40 and 41, the upper shaft 14 is rotated in the direction of arrow A. Said gear 37 and other gears 50 of the Maltese cross transmission device
are always intertwined. A triangular cam plate 51 is fixed to this gear 50, and the cam plate serves to operate the combing device 52. The cam plate 51 serves to actuate a link 53 which is fixed to the shaft 51. Two combing cams 55 are fixed to the shaft 54, only one of which is shown in FIGS. 4 and 5. Upon actuation of the link 53 by the cam plate 51, the shaft 54 according to FIG. 5 is pivoted clockwise. Third
According to the figure, the cartridge 1 is located in the cartridge support 20 of the endless chain 18 when the shaft 54 is pivoted clockwise.
The combing cam 55 collides with 9. As can be seen in FIG. 5, the endless chain 18 is guided in the region of the combing device 52 in a curved disk 56. The combing cam 55 is rotated approximately 58 degrees to position 1.
At 9, it hits the cartridge, and at that position it is within the range of the star-shaped carrier 24, which carries the cartridge, and the gun barrel axis 13 is shown in FIG. Moved to the range of gun barrel 15. Another pawl 57 is fixed on the shaft 54 of the combing device 52, and the pawl is also connected to the cam plate 5.
Work together with 1. Upon actuation of the second pawl 57 by the cam plate 51, the shaft 54 is returned to its starting position again in the counterclockwise direction according to FIG. both gears 3
The gear ratio of 7 and 50 means that gear 1 rotates 1/3 for one rotation of gear 37, which causes triangular cam plate 51 to rotate the combing device exactly 4 times, and as a result, 4 cartridges are combed. chosen to be taken. During one rotation of the gear wheel 37, the four pins 40 engage with the four slots 42 of the disk 41, so that the conveying chain 18 is likewise rotated four times and four cartridges 19 are fed into the carding device 52. Ru. According to FIG. 4, a bearing 58 for the upper shaft 14 is fixed to the housing wall 29, and a shaft 59 is also fixed.
A disc 41 and a gear 43 connected thereto are supported on the disc 41 . Furthermore, the clutch 2 is attached to the housing wall 29.
A bearing 60 of the shaft 34 of No. 5 is fixed, and a shaft 61 is also fixed, a gear 50 is supported together with a triangular cam 51 on the shaft, and a shaft of the combing device 52 is supported on the support plate 62. 54 is rotated.
According to FIG. 3, the already mentioned blocking lever 27 is mounted pivotably about an axis 63. The tension spring 64 is fastened on the one hand to the blocking lever 27 and on the other hand to the housing wall 29. In the position shown, the spring tends to force the blocking lever 27 into the play of the gear wheel 43 by means of the cam 66. When the blocking lever 27 is turned by hand in the direction of arrow D, the spring 64 is pulled apart via the shaft 63;
and attempts to hold the blocking lever 27 in its free position. (Operation of the Invention) The operation method of the described cartridge supply device is as follows. The star-shaped carrier 24 moves in the direction of arrow A (the fifth
Figure). When the clutch 25 is engaged, the gear 37 is also rotated 90 degrees in the direction of arrow A from the star-shaped carrier 24 (FIG. 4) via the first disc 33 and via the shaft 38 (FIG. 3). One of the four pins 40 fixed on the gear 37 then engages in the slit 42 of the second disc 41, so that the disc 41
Rotated 90°. A gear 43 thereby connected to the disk 41 and a gear 44 meshing with this gear 43
is turned 90° in the direction of arrow A (Figure 3). This rotation of the gear 44 tensions the accumulator or helical spring 46. At the same time, the gear 50 is rotated by 120 DEG by the gear 37, and the combing device 52 is activated. A triangular cam plate 51 fixed to the gear 50 comes into contact with the pawl 33 when the gear 50 rotates by 120 degrees, and as shown in FIG.゜Turn.
This pivoting movement of the skimming cam 55 moves the cartridge 19 towards the star carriers 25, 24, and the star carrier moves the cartridge 19 towards the gun barrel 6.
Move to range 5. As soon as the cartridge 19 is pushed out of the cartridge support or cartridge holder 20,
The conveyor chain 18 is moved one step and the previously compressed spring 46 is relaxed again. The firearm 10 is switchable so that cartridges can be selectively removed from one or the other cartridge supply device 11 or 12. If both magazines are empty, the switch will occur automatically. Maltese cross conduction device 40, 41, 42 described
The method of operation will be explained based on FIGS. 6 to 13. The positions of the star-shaped carrier 24, the cam plate 51 with the slit 42, and the cam plate 51 correspond to each other in FIGS. 3 and 6. If the star carrier 24 is turned by 10° in the direction of arrow A, the positions according to FIGS. 7 to 13 are obtained, with a rotation angle of 15° being indicated between FIGS. has been done. The star-shaped carrier 24 and the fixed shaft 40 (FIG. 3) are rotated by an equal amount of 10° (or
15°). According to FIG. 3, the cam plate 51 is
Rotated by the star carrier 24 via gears 37 and 50, the cam plate is rotated by an equal amount 12° 20' (or in FIGS. 9 and 10) corresponding to the direction of arrow B.
20°). On the other hand, if the star carrier pair 24 is rotated by an equal amount, then the disc 41 is rotated by an equal amount in accordance with the configuration of the Maltese cross transmission. If the cam plates 51 are turned by equal amounts, the combing device 52 is likewise turned by the same amount with the combing cam 55. This relationship can be obtained from FIGS. 7-13 and the following chart.

[Table] According to FIGS. 6 to 9, the pin 40 comes out of the slit 42 of the disc 41 in a step shape, and according to FIGS. 10 to 13, the next pin 40 comes out in a step shape in a circle. enters the slit 42 of the plate 41, and before the next pin 40 engages the next slit 42, the first pin 40 enters the next slit 42.
Pin 40 of 1a emerges from slit 42 (FIGS. 9 and 10). Therefore, when the first pin 40 is engaged and disengaged, the slit 42 of the disc 41 of the second pin 40
A trouble-free transition is guaranteed when entering the country. For this purpose there is one projection between each two slits 42 of the disc 41. In addition, eight pins 71 are fixed to the gear wheel 37, to which four pins 40 are fixed, only two of which are shown in the diagram. According to FIG. 7, the cam 70 begins to enter between the two adjacent pins 71, while the pin 40 comes out of the slit 42. According to FIG. 9, the cam 70
completely connects slit 4 between pin 71 and pin 40.
At the outer edge of 2. According to FIG. 10, the cam 70 always begins to enter the outer end of the slit 42 between one pin 70 and the next pin 40. Each 13°20' of the cam plate 51 in the direction of arrow B
(or 20 DEG), the carding cam 55 is also pivoted clockwise about the shaft 54 and moves the cartridge 19 into position 19 according to FIG. While the cartridge 19 is being plowed out of the cartridge holder 20, the endless chain 18 is not moved (FIG. 3), since the cartridge 19 rests against a stationary stop 73 (FIG. 6). However, as mentioned above,
Since the conveying chain 18 is driven from the star-shaped conveying body 24 via a Maltese cross transmission, the accumulating pressure spring 4
6 is tensioned (Figure 3). 7 to 13, the position of the cartridge holder 20, indicated by 20, indicates how far the cartridge holder would be moved if it were not closed by the cartridge 19 abutting the stopper 73. shows. 7 to 13, the position of the combing cam 55 is shown, and the combing cam is first moved twice;
It is then swiveled by 8 degrees and then by an equal amount of 11 degrees, with all devices 24, 41, 5 shown in FIGS.
1 and 55, large steps are shown.

[Brief explanation of the drawing]

Fig. 1 is a front view of the cartridge feeding device in the firing direction of the firearm, Fig. 2 is a side view of the device shown in Fig. 1, Fig. 3 is an enlarged partial view of Fig. 1 as seen in the firing direction, and Fig. 4 is a side view of the device shown in Fig. 1. 3, FIG. 5 is a sectional view taken along the line - in FIG. 4, and FIGS. 6 to 13 are schematic diagrams of the method of operation of the Maltese cross conduction device. Codes in the figure: 10... Automatic firearms, 11, 12...
Ammunition supply device, 18... Endless chain, 19...
Ammunition cylinder, 24... Star-shaped carrier, 37, 43, 44
... Drive device, 46 ... Pressure storage spring, 52 ... Combing device, 65 ... Gun barrel.

Claims (1)

[Claims] 1. Endless chain 18 for transporting and storing ammunition cartridges 19 as an ammunition cartridge supply device for automatic firearms.
and drive devices 37, 43, 44 for the endless chain 18.
, a combing device 52 for combing out the cartridge 19 from the endless chain 18, and a star-shaped carrier 24 for transporting the cartridge 19 to the firearm 10 driven by the rear seat of the gun barrel 65 of the firearm 10. In the cartridge feeding device for automatic weapons, the drive device 37, 43, 44 of the endless chain 18 is connected to the star-shaped carrier 24 and for storing the energy generated during the rear seat of the gun barrel 65 and the endless chain 18. Maltese cross transmission 40, 41, 42 with storage spring 46 for feeding the chain 18 and for stopping the conveying chain 18 during the skimming process
A cartridge supply device for the automatic firearm as described above, characterized in that it has the following. 2. The storage spring 46 is designed as a helical spring, whose outer end 49 is rigidly connected via the housing 45 to the upper shaft 14 of the endless chain 18 and whose inner end is connected to the drive device 37, 43, 44. Claim 1, which is rigidly connected to the gear 44 of
Ammunition feeding device for automatic firearms as described in 2. 3. The Maltese cross transmission 40, 41, 44 has a disc 41 with a slit 42, in which the pin 40 of the wheel 37 engages, and this radial slit 42 is used for the removal of the cartridge 19. In order to ensure the necessary stopping of the conveying chain 18, the conveying chain 18 is curved on the one hand and is wider at its open outer end than the closed inner end on the other hand. Ammunition feeding device for automatic firearms. 4. A cartridge in an automatic firearm according to claim 1, wherein one cartridge supply device 11, 12 is disposed on each side of the automatic firearm 10 for supplying at least two types of cartridges. Feeding device. 5 Drive devices 37, 43, 44 are star-shaped carriers 24
2. A cartridge feeding device for an automatic firearm according to claim 1, further comprising a clutch for connecting or disconnecting the cartridge and the endless conveying chain. 6. In the automatic firearm according to claim 1, wherein the combing device 52 is connected to the drive devices 37, 43, 44 via a gear 50 and can be driven at the same time by the star-shaped carrier 24. Ammunition feeding device.