FI69360C - SLUTANORDNING FOER ETT AUTOMATVAPEN - Google Patents

Description

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(51) Kv.lk, * / lnt.a. 'F 41 C 11/02 // F 4l D 3/00 FINLAND —FINLAND (21) Patent application - Patent »n * 6knlng 773562 (22) Filing date - Ansöknlngtdag 24.11. 77 <* = *) (23) Starting date - Glltighetsdag 24.11 .77 (41) Has become public - Blivit offentlig 26.05 78

Patent * and National Board of Registration Date of publication and publication date— in gq or

Patent * och registerstyrelsen '' Ansökan utlagd och utl.jkrlften publicerad · 7> J

(32) (33) (31) Privilege claimed - Begird prloritet 25.11.76 22.12.76, 22.i2.76 Japan-Japan (jp)

Sho 51-141399, Sho 51-154703, Sho 51-172181 (71) Kabushiki Kaisha Kawaguchiya Hayashi Juho Kayaku-Ten, No. 3, 4-chome, Muromachi, Nihonbashi, Chuo-ku, Tokyo, Japan-JapanJP) (72) Hisao Hayashi, Tokyo, Japan-Japan (jP) (74) Oy Kolster Ab (54) Automatic weapon closing device - Slutanordning för ett automatatvapen

The invention relates to a closing device for a gas-operated automatic weapon, which device comprises a slider moving back and forth inside the box, a closing piece slidably placed on the slide and a latch device fitted thereto, and an operating device for the closing device.

It is known from firearms that the closing device closes the closing surface of the barrel of the weapon tightly, whereby the locking device controls the backward movement of the closing piece. This latch piece can be connected to the barrel of the firearm and in this state closes the closing surface completely, and the slider belonging to the closing device can be moved back and forth at a certain interval, with backward movement when the pressure of the gas evolved when the cartridge is triggered moves through the gas device to move the closing piece together. after which the rearward movement of the previously locked closure of the latch device is released in the event of its return stroke.

69360 Such a known device has a slider arranged at the bottom of the closure body and can be moved back and forth within a predetermined distance. In the central part of the closure is a radially directed, through-bore into which the latch device is fitted so that a protrusion formed therein which engages a non-shown barrel of the firearm is pivoted up and down, and specifically depending on the relative movement of the slider relative to the closure.

However, such a known device exhibits the disadvantages described below. First, the barrier must be tightly locked to the barrel barrel barrier surface relative to the latch protrusion, because the force acting on the end face of the gas pressure barrier when triggering the charge is directed through the firearm barrel by the above barrier device, forces the barrier device and rotates due to its structure.

This latch device rotates clockwise so that the rear of the closure collides with the inner wall opposite the protrusion. At the same time, the contact area of the latch device on the front wall of the latch of the latch device is arranged close to the pivot point and forms a substantially linear or streak-like so that the surface subjected to the above-mentioned force is small. Therefore, the closure must be very stable and strong.

After opening the locking device, this is released from the through-bore of the closing piece so that it can be moved freely forwards and backwards during the impact of the closing device. Therefore, the necessary guide rails are usually provided inside the casing to prevent malfunction of the latch device which could be triggered by an obstacle on the inner wall of the frame.

If the end part of the latch device opposite to the side on which the projection is located protrudes towards the closing piece, the axis of rotation performs the above-mentioned rotational movement. Therefore, the relative dimensions between the rotating part and the through-bore of the rotating shaft and the closure body and the front wall surface of the latch device must be improved so as to undesirably complicate the construction of the closing device.

Il 69360

In the following, the term "closing device" includes a closing piece, a slide, a locking device, etc. as a whole.

The actuator of this closure device is configured so that the load generated by the gas pressure generated by firing the cartridge is transferred to the closure device in the jacket by means of a device mounted on the side of the gas firearm barrel so that the closure device tightly connected to the closure surface is recoiled. The closing device then moves forward under the force of the return spring fitted to the log of the firearm and is thus ready for charging and firing a new cartridge.

In a known closing device, a coupling is provided between this and the return spring, whereby the coupling takes place on the slide of the closing device in order to perform an upward and downward turning movement. Such a closing device is provided with a closing piece which can be tightly locked to the closing surface. In addition, a slider is provided which can be moved back and forth relative to the closure body within a predetermined distance and which is connected to the gas-operated device described above. This slider moves backwards when first triggered, to open the lock between the closing piece and the closing surface, while at the same time moving the closing piece backwards.

Therefore, there must be a connection between the slider and the return spring to move the closing device back to the starting position by means of the return spring. In this case, the log of the weapon is such that the firearm is pressed against the shoulder of the shooter. The coupling, which depends to some extent on the reciprocating movement of the closing device, is then controlled by a return spring fitted to the log. The closing device, and in particular the closing piece itself, must be kept in a locked state for a predetermined time, in which case the closing surface is completely closed. Normally, the closing device is then moved completely backwards, after which the slider is released from the lock due to recoil. If the locking state of the closure is not appropriate, malfunctions may occur, e.g. the closure, simultaneously with the firing of the cartridge, may immediately move backwards.

4,69360

Since the sleeve in this case, due to the backward movement of the closure, is thrown from the barrel of the firearm, this occurs at the beginning of the firing of the gunpowder, so that the shooter is in considerable danger and may be injured by the gunpowder.

The object of the invention is to develop a known closing device so that an undesired outflow of combustion gases can be avoided by the latch device non-rotatably and tightly connecting the closing device against the closing surface of the firearm by means of a closing piece. This task is carried out by means of a structure as set out in the claims.

Accordingly, the slider surrounds the closure body in a sliding connection, while the rear of the latch device is kept radially rigid by the slider. Thus, the rotational movement of the latch device is limited to the time when the latch device is subjected to the impact-like load described above, so that collision of the latch device with the barrel of the firearm or the inner wall of the casing is completely prevented. Thus, there is no need to increase the thickness of the inner wall of the casing for reinforcement or to continue the barrel of the firearm inside the casing.

With the device according to the invention, in which the pressure surface of the latch device contacts the closure body in the locked state, complete surface contact between the pressure surface and the closure body is achieved. In the known closing device, it is hardly possible to avoid the rotational movement of the rear main part of the locking device in the presence of pressure, so that the contact described above usually takes place on a linear surface. On the other hand, in the device according to the invention the rotation of the rear part of the latch device is limited, the surface contact of the pressure receiving surface of the latch device with the closure can be maintained during locking so that the pressure acting on the receiving surface per unit area is significantly reduced so that the latch and closure can be weak and rigid.

Pressing the protrusion of the latch into the bore of the closure after the protrusion has been released from the grip of the cartridge case of the firearm barrier prevents malfunction and damage to the latch.

II

5 69360 because the protrusion remains in the bore; otherwise, malfunction could occur because the inner wall of the sheath holds the protrusion during the time the closure device moves back and forth. Due to the structure of the closing device according to the invention, no guide rails of any kind are required for the locking device in the inner wall of the casing, so that considerable advantages are achieved in terms of machining and manufacturing costs.

When dismantling the shut-off device for maintenance purposes, the shut-off lever can be removed manually. In addition, assembly is simplified and manufacturing costs are reduced so that assembly and disassembly can be performed without special tools. The closing piece lever is attached to the closing device so that it can also be operated by means of gas pressure or by the reaction forces generated during the firing of the cartridge. In the known closing device, a lever is attached to the device so as to engage it through the cartridge case outlet formed in the wall portion on the side of the housing, i.e. the lever fits into the opening of the closing device; the cartridge case outlet can act to charge the cartridge. A pin is arranged in the closing device in the area where the lever is placed in the opening, which, under the tension of the springs, protrudes from the inner circumference of the opening so that the pull-out of the closing piece lever is prevented; this is done by the co-operation of the pin and the cavity formed in the closure lever.

However, if the holding force of the pin in the cavity is small in such devices, the closing piece lever can be pulled from the closing device by the effect of high impact force, vibration, etc., which occur in the closing device when the cartridge is triggered. On the other hand, if the gripping force is large enough, it is difficult to pull out the closing piece lever when dismantling the closing device for maintenance during short-term use of the firearm.

When using a shut-off device, it is often difficult to remove the lever from the shut-off device without suitable tools. By means of the drive device according to the invention, the closing device is moved forwards and backwards in the casing together with the closing hand lever, which is then held in the cartridge outlet and in the guide bore bounded by the outlet. Therefore, according to the invention, the latch of the closing body lever is formed on the wall surface. The closure 69360 body lever has arms that are in sliding contact with the inside of the wall surfaces of the cartridge core outlets and the guide bore, and specifically so that the arm of the lever engages the opening of the closure apparatus. In addition, a groove is made in the outlet, at a predetermined location, before assembling the barrel of the firearm; the branches described above can seize this groove. In such a structure, the pins, springs, etc. required in the known closing device are not required, but it is sufficient that only a bore is fitted to the closing device, to which the arm of the closing piece lever is fitted. Thus, considerable advantages are obtained, in particular the reduction in the number of components, the simplification of assembly, the reduction in the manufacturing costs of the closure, etc. In addition, no special tools are required for disassembly of the closure, e.g. for maintenance purposes, and individual components can be removed by hand.

The invention will now be described in more detail with reference to the accompanying drawing, in which Figure 1 shows a closing device according to the invention with its components, Figure 2 shows an automatic firearm drive device in partial longitudinal section, Figure 3 shows a device according to Figure 2 in a side view, Figure 4 shows a longitudinal section of a device, various components, unlocked device Fig. 6 shows a cross-sectional view along the line AA according to Fig. 2, Fig. 7 shows a longitudinal section of the device, components, casing before firing the cartridge, Fig. 8 shows a longitudinal section to show the sealing device after firing the cartridge, Fig. 9 shows a longitudinal section along the line AA, 9b bottom view resp. 9c is an end view of the closing device with its connecting parts.

Figures 1, 6 show e.g. the following components: a substantially shank-shaped shutter body 1, a through-bore 2 radially fitted to the shutter body, a pull-out 3 and a latch device 4 fitted to the bore 2 of the shutter body 69360 7, the protrusion 5 being formed at the front end of the latch device 4 a branch 6 and a rear branch 7. A surrounding part 9 is arranged in the front, cylindrical part 9 'of the slider 8 of the closing device, in which the closing piece 1 is movably arranged so that it can be moved forwards and backwards by a predetermined distance; in addition, the rear end of the latch device 4 is surrounded and supported so that it cannot perform radial movement. The front part of the surrounding part 9 is open and its cross-section is mainly C-shaped. The part 9 surrounding the slide 8 has a bore 10 for accommodating the front branch 6 of the latch device 4 and a side bore 11 for receiving the closure lever 12.

In the middle of the closing piece 1 as well as the slider 8, bores 13 are arranged, respectively. 14; a striker 15 is arranged in the axial bores 13 and 14 and is biased to the rear by means of a helical spring 16; a helical spring 16 is arranged between the stepped part of the striker 15 and the inner wall surface of the closure body 1, in which the through-bore 2 is formed; the striker 15 is fixed to the slide 8 by means of a pin 17 so that the striker can be moved axially by a predetermined distance.

As a whole, the above-mentioned components form the device mentioned below as a closing device S.

The jacket 18 receives a closing device S, which, according to Fig. 6, can be reciprocated with the slider 8 by gripping the grooves 19 in the inner wall of the jacket 18.

According to Figures 3 and 6, a sleeve outlet 20 is formed in the side wall of the jacket 18 to remove empty cartridge cases, and a guide slot 21 abutting the outlet 20 is provided to guide the closure body lever 12. A groove 22 is formed in the side wall of the outlet opening 20 to extend the arm 12 'of the closure lever 12. To prevent pulling out, a protruding cam 12 "is formed in the center of the arm 12 'of the lever 12. According to Fig. 2, the jacket 18 is rigidly attached to the firearm barrel 23, and a cut 25 is formed in the extension 24 of the firearm barrel 23.

8 69360

The figure also shows the closing surface 26, the cartridge magazine tube 27 and the connecting part 28 connected to the sliding part 8.

Figures 2, 5 and 6 show the various components of the closing device S in the locked state. The latch device 4 is pressed up with its front leg 6 in contact with the slider 8 so that the protrusion 5 at the front end of the latch device 4 points radially away from the closure body 1 and is then in contact with the cut 25 of the barrel extension 24 of the firearm. When the cartridge is fired from a firearm in which the components of the closing device are in the positions explained above, the cut 25 and the point B of the slide 8 (cf. Fig. 5) receive a restoring force acting on the front surface of the closing piece 1 through the locking device 4 so that the closing piece 1 is retained in retraction. 5 by engaging the cut 25 of the latch device 4 so that the closure piece 1 cannot move backwards. At the same time, the restoring force generated by the gas pressure is transferred to the slide 8 by means of a non-shown gas-operated device, so that this begins to move backwards. When this slider 8 moves backwards by a predetermined distance, the front branch 6 of the latch device 4 falls into the radial bore 10 of the slider 8 so that the projection 5 of the latch device 4 penetrates the radial, through bore 2 of the closure body 1 (cf. Figs. 4 and 5). Since the lever 12 according to Fig. 4 biases the rear branch 7 of the latch device 4 so as to oscillate when forced, it remains in the bore of the closure body 1. In this case, the closing piece 1 is released from the lock and the barrel 23 of the firearm is released, and the slide 8 moves together with the closing piece 1 so that the closing piece is periodically retracted. During the return movement, the closing device S throws out the empty cartridge case, and then the closing device S moves forward again so that it is ready for a new cartridge release.

The lever 12 engages the slide 8 and prevents it and the closure body 1 from rotating and at the same time swings the latch device 4 forcibly.

In the embodiment described above, the latch device 4 is turned into the bore of the closure body 1 only at its front end, in which the projection 5 is made, while the rear end of the latch device 4 does not perform radial movement. When the closing device is locked, there is a surface contact between the contact surfaces of the front walls of the bore 2 of the closing piece 69360 1 and the latch device 4, because no rotational movement of the latch device 4 occurs. Therefore, the surface pressure per unit area can be significantly reduced. In addition, since the latch device 4 is forcibly rocked by the lever 12, it is certain to prevent the latch device 4 or its projection from moving radially away from the closure body 1 during the time when the closure body 1 and the slide 8 are in the extended state; thus reliably eliminating the risk of damage to the relevant components or the locking device 4. In the embodiment described above, no special components or special machining measures are required to manufacture the inner wall of the sheath 18, so that machining is simplified and manufacturing costs are advantageously reduced.

In the following, it will be explained in more detail how the closing piece lever 12 is fitted to it during the operation of the closing device S.

The backward returning force upon firing of the cartridge is transmitted through a non-shown gas-operated device of the slide 8, and the arm 12 'of the closure lever 12 impinges on the rear leg 7 of the latch device 4 as the slide 8 moves backwards; at the same time the front leg 6 locks into the bore 10. As a result, the latch device 4 is forced to swing and detaches from the grip of the projection 5 of the latch device 4 from the cut-out 25 of the firearm barrel extension so that it disengages from the lock.

This has the advantage that the forced pivoting movement of the latch device 4 takes place due to the fitting of the lever 12, when the rotational movement of the actual closing piece 1 is prevented. According to Fig. 3, the fastening of the lever 12 takes place by inserting the closing device S from the front end into the casing 18 and then inserting the cam 12 ”of the lever 12 into the groove 22 of the casing 18, to take the slide 12 of the lever 12 with the bore 10. In this case, the arm 12 'of the lever 12 has a bore 8 in the grip with the bore of the slider 8. At the end of the above-mentioned operations, the barrel 23 of the firearm is fixed to the casing 18, and the closing device S moves backwards to the position shown in Fig. 2. Thereafter, the lever 12 is prevented from moving forward into the groove 22 until the firearm barrel 23 is taken out of the casing 18. Therefore, according to Fig. 6, the cam 12 "of the lever 12 is in sliding contact with the inner wall of the wrapper opening 20 69360 of the casing 18 for empty cartridge cases. filled to prevent the lever 12 from being pulled out.

If lever 12 needs to be removed, the above steps are performed in reverse order. The pull-out of the lever 12 is achieved in a very simple manner at a groove 22 cut in an inner wall which acts as a counter-bearing for pulling out the lever 12.

An embodiment of the drive device according to the invention for the closing device 105 and the connecting part 109 will be described below with reference to Figs.

These figures show e.g. the following components: a firearm barrel 101, a jacket 102, a cartridge magazine tube 103, a drive rod 104 for a gas-powered device, a shut-off device 105 and a slider 106 guided by rails (not shown) inside the jacket 102 so that it can be moved by arrow B to FIG. back and forth. The closure body 107 is fitted to the bore in the slide 106, at its front end, so that it can be moved back and forth a certain distance. The latch device 108 is fitted in the central bore of the closure body 107 and can be moved up and down. The locking device 108 is pressed up when the closing piece 107 and the slide 106 have not been moved, i.e. when they are held according to Fig. 7, when the latch device 108 is lowered, when the closing piece 107 and the slide 106 are moved relative to each other. The connecting part 109 is freely pivotally connected to the slide 10 by means of a shaft 110, the tip of the connecting part 109 being gripped by the rear end of the closure piece 107 so that the downward pivoting movement of the rear end of the connecting part 109 can be limited. However, this restriction is overcome when the closure body 107 and the slide 106 are moved relative to each other. In addition, there is a return spring, a chamber cylinder 112 for receiving the return spring 111, and a spacer 113 between the connecting part 109 and the return spring 11. In addition, a barrier surface 114, an extension 115 of the firearm barrel 101 and a locking bore 116 of the extension 115 are shown.

Figure 7 shows the relative positions of the components making up the device before the non-shown cartridge is fired. The spring force of the return spring 111 is transmitted to the slide 106 through the connecting part 109 so that the closing device 105 is brought to the front view shown.

II

69360 11 to the earthly position. Currently, the front surface of the closure member 107 is in grip with the closure surface 114 and closes it tightly while the slider 106 and the closure member 107 are held in their non-displaced positions; as a result, the latch device 108 is pushed upward to lock the closure member 107 from engagement of the protrusion 117 in the bore 116. The front portion 109 is gripped with the lower portion of the rear end of the closure member 107 at its front end so that downward movement of the back end of the closure portion is limited.

When the cartridge is fired, the generated gas pressure is transferred to the slide 106 via the drive rod 104 of the gas-operated device and has a backward force. At the same time, the same gas pressure acts on the front surface of the closure body 107. However, its immediate rearward movement is prevented so that the closure body 107 is locked by the latch device 108 as shown above.

In the normal state, when the protrusion 117 of the latch 108 engages the extension 115 of the firearm barrel 101, the closure 107 is locked in the position shown in Fig. 7, and therefore the slider 106 first starts to move backwards after the return stroke reaches a predetermined value. that the latch lowers.

Thus, the closure piece 107 is released and, together with the slider 106, begins to move backwards. At the same time, the tip of the connecting part 109 detaches from the grip with the rear end of the closing piece 107 due to the relative movement between the closing piece and the slider 106, so that the rear main part of the connecting part 109 can be freely swung. Therefore, the connecting part 109 moves to the cylinder 112, whereby it bends a certain amount and settles in the position shown in Fig. 8. Thereafter, the forward movement of the closing device 105 begins under the action of the return spring 111 and returns to the initial position, whereby during this forward movement, the firearm is loaded with a new cartridge.

If the closure body 107 is not securely locked to the firearm barrel extension 115 due to a failure or breakage of the protrusion 117 of the latch device 108 or improper upward movement of the latch device 108, this will immediately and simultaneously begin to move backward with the firing of the cartridge. Therefore, sufficient relative movement is not provided between the slider 106 and the closure body 107, however, these components move backwards together, and the slider 106 and the closure body 107 do not move relative to each other and remain substantially immovable so that the contraction of the back oscillation is not reversed.

Thus, the connecting part 109 is prevented from moving into the cylinder 122 and oscillating so that the rearward movement of the connecting part is limited due to the upper inner wall of the cylinder 112. In this case, the shut-off device 105 remains in the position behind its rest position, and only at the end of a small stroke, so that the removal of the cartridge parts is prevented, the delivery of the burned gas being substantially smaller in relation to known firearms.

As described above, the device according to the invention for the closing device effectively protects the shooter from accidents during the use of the firearm, since the cartridge sleeves are not removed when the gunpowder burns, while the removal of combustion gases from the jacket waste opening is greatly reduced. At its rear part, the connecting part is gripped by a return spring which applies a forward force to the closing device. The front main surface of the connecting part connected to the slide is limited in its oscillating movement and cannot be oscillated unless there is sufficient relative movement between the closing piece and the slide. Thus, the movement behind the closing device is limited if its locking is disengaged. In addition, when the shut-off device in normal use affects normal reverse and forward movements, reliable loading of the next cartridge is prevented.

The shock spring 118 is arranged between the closing piece 107 and the slider 106, which move towards each other during the movement of the closing device 105, and specifically under the action of the shock spring 118.

Therefore, in this case, the upward movement of the latch device 108 occurs only when the slide 106 moves alone without the closure piece 107, after this has come into contact with the closure surface 114 and is retained there. In other arrangements of the closure piece 107, the protrusion of the latch device is retained in a lowered position relative to the closure member and is surrounded there so as to reliably prevent the protrusion from colliding with the casing or barrel extension and being damaged or folded.

Claims (4)

An automatic weapon end device, said end device comprising a sliding piece (8, 106) which moves reciprocally within a slide (18, 102), a sliding piece (1, 107) arranged in the sliding piece, provided with a locking piece (4, 108), and a drive means for the closing device, characterized in that the sliding piece (8, 106) is a substantially genuine cylinder which is open at the front end and partly on the sides and in the front part (9) of the end piece (1). , 107) including the locking piece (4, 108) are slidably arranged, that the end piece (1, 107) has a radial bore (2) for the locking piece (4, 108), that the locking piece (4, 108) has a protrusion (5, 117). ) for engaging in a cut (25, 116) in the reading frame (24, 115) and for limiting the movement of the front piece (1, 107) in front of the end piece, which closes a cartridge chamber at the rear, that the closing device has a pivot member for the locking piece (4, 108), which means pushes the protrusion (5, 117) into the bore (2), the end piece (1, 107) and sliding piece t (8, 106) are separated from each other, and which means pulls the protrusion out of the bore (2), where the end piece (1, 107) and the slider (8, 106) move towards each other, that the drive means of the end device contains a handrail (28 , 109), which is attached to the rear portion of the sliding piece (8, 106) and which at its rear end rests against a retaining spring (111) arranged in the gun bar, and that the device further comprises a removable end piece arm (12), which is provided in the bore (11) provided in the sliding piece (8, 106). 2. Device according to claim 1, characterized in that the end piece arm (12) is arranged to be displaced by and through a coupling part in the bore (11) of the sliding piece (8) to force the locking piece (4, 108) into the bore (2). of the end piece (1), where the end piece and the sliding piece are detached from each other. Device according to claims 1 and 2, characterized in that the end piece arm (12) extends to a removal opening (20) for the sleeve located in the side wall (18, 102) of the sleeve and through a guide heel (21) outside the side wall of the leather and the arm is provided. with a fuse comb (12 ") which prevents the removal and such sliding touches the surface of the interior of the leather (18, 102)