SK500542014A3 - Trigger mechanism for auto-loading weapon, and auto-loading manual weapon - Google Patents

Abstract

The self-loading firing mechanism, allowing a single control on the weapon to select the appropriate firing mode, is a single-action / double-acting mode (SA / DA) with safe hammer triggering (7) with the possibility of securing a tensioned hammer and exclusively double-acting mode (DAO). The trigger mechanism comprises a pivot (23), a main hammer catch (9.1) and a hammer auxiliary catch (9.2) which are provided with means for cooperating with each other and with the hammer (7), the pin (23) being rotatably mounted and controlled by a control element (22) on the surface of the weapon.

Description

Trigger mechanism of a self-loading weapon and a self-loading, manually operated weapon

Technical field

The invention relates to a combined trigger mechanism of a self-loading weapon with a percussion hammer, which allows shooting in single-acting and double-acting modes with the possibility of locking and controlled lowering of the hammer and shooting in a double-acting mode as well as a self-loading handgun .

Prior art.

Triggers used in self-loading weapons are:

Single-action trigger mechanism SA - Single Action, where pressing the trigger can release the drum mechanism and thus a shot only if the shooter himself or by moving the breech after the previous shot first tensions the drum mechanism, so that the drum pad remains caught in a tensioned position. This mechanism can also be supplemented with a manual fuse.

The double-action trigger mechanism DA - Double Action, works in such a way that by pressing the trigger the shooter tensiones the drum mechanism until the percussion hammer is triggered and the charge is initiated (fired). The percussion hammer is in the front position or on the safety tooth.

Combination of single-acting and double-acting SA / DA trigger mechanism. Trigger mechanisms of this type in various design variants are described in CZ 301749 B6,, *, US4 028 836, US7 257 918B2, US6 381 892 B1, US6 341

442 B1. These documents do not address the safe starting of the hammer and its use in the double-acting mode only.

DC trigger mechanisms (decocker) with safe firing of the hammer without a shot, i. with controlled hammer lowering are described, for example, in CZ 293 435 B6, US 6 718 680 B2, US 6 481 139 B2, US 6 588 136 B2. The weapons described in these documents cannot be used in DAO mode.

Triggering mechanisms with an exclusively double-acting mode are described e.g. in EP 1 472 501 B1, but this does not allow the use of the SA / DA mode.

EP 0 730 135 B1 and EP 2 525 185 A1 describe weapons with a single-action and double-action trigger mechanism, with the possibility of use in the double-action mode only, but this modification of the trigger mechanism requires replacement of some components of the trigger mechanism or their deactivation, which is an intervention into the design of the weapon and it is not possible to do with the control of the weapon.

A multifunctional trigger mechanism with the possibility of switching several firing modes by means of a control element on the weapon is described in the document SK 279 478 B6, but it does not solve the safe triggering of the hammer in a single-acting mode, which is important from the point of view of safety.

The object of the present invention is to provide a mechanism with the possibility of simple switching of the firing mode single-acting and double-acting with the possibility of securing against firing, supplemented by safe firing of a stretched hammer and exclusively double-acting mode (SA / DA + DC and DAO) for self-loading weapons intended for service and civilian use without the need to disassemble the weapon.

The essence of the invention

The shortcomings of the prior art are eliminated by the trigger mechanism for the self-loading weapon, which allows the single control on the weapon to change the firing mode to single-action / double-action mode with safe lowering of the hammer with the possibility of securing the tensioned hammer and for firing exclusively in double-action mode. The trigger mechanism includes a pin which is provided with a groove with an edge for controlling the main hammer catch for setting only the double-acting mode and safely lowering the drum hammer and a recess for inserting the main catch when deflecting from the drum hammer and part of the cylindrical surface of the pin for securing the main hammer catch. .

The main hammer catch has a tooth for catching the tooth of the percussion hammer and a protrusion for controlling the deflection from engagement with the percussion hammer by means of a pin in the DAO mode and for safely lowering the hammer. The main hammer catch has an area for deflection from engagement with the hammer by means of a pull rod and a protrusion for locking in SA / DA mode by means of a pin.

The auxiliary hammer catch has an area on which the hammer strikes when it is started safely.

The percussion hammer has a tooth for gripping with the tooth of the main hammer grip in the single-acting mode and a surface with which it rests on the auxiliary grip of the hammer when it is safely lowered.

The trigger mechanism according to the invention consists of a pivotally arranged pin, a main hammer catch and an auxiliary hammer catch, which are provided with means for cooperating with each other and with the hammer, the pin being rotatably mounted and actuated by an actuating element on the surface of the weapon.

Another object of the present invention is a self-loading weapon, in particular a pistol with the possibility of selecting a suitable firing mode by means of a control element located on the surface of the weapon, namely single / double action mode (SA / DA mode) with safe lowering of the hammer, or with the possibility of securing a stretched hammer or winning a double action. mode (DAO). The weapon according to the invention consists of a handle into which a container is inserted, provided with guides and comprising a trigger mechanism according to the invention, a car fuse, a car fuse lever, and a closure is slidably arranged in the container guides. The trigger mechanism according to the invention consists of:

- a pin comprising an edge for actuating the main hammer catch in the DAO mode and for safely lowering the hammer, a recess into which the main catch engages when deflected to release the hammer in the SA / DA mode and a part of the cylindrical surface for securing the main hammer catch;

- a main hammer catch which is provided with a hammer catch tooth in SA mode, the main hammer catch further comprising a protrusion for the possibility of controlling the deflection from engagement with the hammer by means of a pin in DAO mode and a surface for deflection from engagement with the hammer by rods and lug for locking in SA / DA mode by means of a pin;

- an auxiliary catch of a hammer, which is provided with a surface, for hitting the hammer during safe starting in the DC mode; a

- a hammer, which is provided with a tooth for gripping with the main hammer grip in the single-acting mode SA and an area on which the auxiliary hammer grip rests when the hammer is triggered safely, these elements of the trigger mechanism being arranged for mutual cooperation and the selection of a suitable firing mode element located on the surface of the weapon.

The biggest advantage of the mechanism is that the user can choose the appropriate firing mode himself, as needed in a particular situation, which is not possible with commonly used mechanisms. By a suitable choice of mode, it is possible to use all the advantages that individual modes provide. Improper choice of the shooting mode, the use of the weapon is not limited in any way, but the user loses the comfort and especially the safety that the weapon offers him and thus approaches the commonly used standards by not using its capabilities. The size of the caliber of the handgun used does not affect the function and use of this trigger mechanism. Switching between the individual modes is done using a single control located on the weapon so that it is not necessary to change the grip of the weapon. The control is double-sided and gives the same control when shooting from a weapon held in the right or left hand.

Overview of figures in the drawings:

Fig.A.1.1 - view of the weapon handle

Fig.A.1.2 - view of the container with the percussion mechanism

Fig.A.1.3 - view of the end of the weapon

Fig.A.1.4 - view of the fingerboard position limiter

Fig.A.1.5 - view of securing the position of the fingerboard with locking threads

Fig.A.1.6 - view of important construction details of selected parts of the mechanism

Fig.A.2.1 - view of the arrangement of parts of the mechanism from the right

Fig.A.2.2 - view of the arrangement of parts of the mechanism from the left

Fig.B.1 - view of the weapon and the position of the control keyboards in the SA-unlocked mode

Fig.B.2.1 - view of the arrangement of the parts of the mechanism from the right in the SA-unlocked mode

Fig.B.2.2 - view of the arrangement of parts of the mechanism from the left in the SA-unlocked mode

Fig.B.3.1 - section of the trigger mechanism in the SA-unlocked mode

Fig.B.3.2 - section of the trigger mechanism in the SA-unlocked mode

Fig.B.4 - section of the trigger mechanism in the SA mode, tensioning the hammer manually by means of a lock

Fig.B.5 - section of the trigger mechanism in the SA mode, tension of the hammer at the end after the shot

Fig.C.1 - view of the weapon and the position of the control keyboards in the SA-locked mode

Fig.C.2 - detailed view of the arrangement of parts of the mechanism in the SA-locked mode

Fig.C.3.1 - section of the trigger mechanism in the SA-locked mode

Fig.C.3.2 - section of the trigger mechanism in the SA-locked mode

Fig.D.1 - view of the weapon and the position of the control keyboards in the SA / DA mode

Fig.D.2.1 - view of the arrangement of parts of the mechanism in the SA / DA mode

Fig.D.2.2 - view of the arrangement of parts of the mechanism in the SA / DA mode

Fig.D.3 - section of the trigger mechanism in DA mode, before releasing the hammer

Fig.D.4 - a detailed view of the arrangement of the parts of the mechanism in the DA mode, before releasing the hammer

Fig.E.1 - view of the weapon and the position of the control keyboards in the DC mode

Fig.E.2 - detailed view of the arrangement of parts of the mechanism in DC mode

Fig.E.3.1 - section of the trigger mechanism in DC mode

Fig.E.3.2 - section of the trigger mechanism in DC mode

Fig.F.1 - view of the weapon and the position of the control keyboards in the DAO mode

Fig.F.2 - detailed view of the arrangement of parts of the mechanism in the DAO mode

Fig.F.3.1 - section of the trigger mechanism in DAO mode before the start of hammer tensioning

Fig.F.3.2 - section of the trigger mechanism in DAO mode before the start of hammer tensioning

Fig.F.4 - section of the trigger mechanism in DAO mode before releasing the hammer

Fig.F.5 - detailed view of the arrangement of the parts of the mechanism in the DAO mode before the release of the hammer

Examples of embodiments of the invention

The trigger mechanism is used in this example in a self-loading small arms, in particular a pistol, the main parts of which are shown in Figure A.1.1 handle 1, Figure A.1.2 container 2 and Figure A. 1.3 Conclusion 3, with the folded state being the container 2 inserted into the handle 1 and the lock 3 with grooves 101b is movably mounted in guides 101a on the container 2. A double-ended rod 21 is mounted in the handle 1 provided with a trigger 6 and the right and left sides are provided with locking threads 24. The trigger mechanism according to the invention is stored in a container 2, which is provided with an actuating element, 22 in this case a fingerboard, and is actuated by a trigger 6. The container comprises a guide 101a for sliding the closure 3, which is shown in figure A.1.3 and comprises grooves 101b for cooperating with the guides 101a of the container 2. Figure A.1.4 shows a detail of the inside of the handle 1. There is one of the fingerboards 22. which is connected to a pin 23 for setting the selected position and thus a suitable firing mode. The handle 1 is provided with a left and right locking thread 24 with a spring ball 104d and stop surfaces 103. The inner surface of both fingerboards is provided with a stop 102 for abutment on one of the stop surfaces 103 on the handle 1 and recesses 104a and 104b and an edge 104c for receiving the spring ball. 104d of the locking thread 24. Figures A.1.5 show the fingerboards 22 with the inserted pin 23 in three different positions, which allows three firing modes. Figure A. 1.5 on the left shows the locking of the fingerboard by the locking thread 24 in the position for the SA / DA-locked mode, where the spring ball 104d is supported on the edge 104c. Figure A.1.5 in the middle shows the locking of the fingerboard 22 by the locking thread 24 in the position for the SA / DA-unlocked mode, where the spring ball 104d is supported in the recess 104b. Figure A. 1.5 on the right shows the locking of the fingerboard 22 by the locking thread 24 in the position for the DAO mode, where the spring ball 104d is supported in the recess 104a. Figures A. 1.6 show the essential components of the trigger mechanism in an exploded state from two different perspectives, which are the pin 23, the main hammer catch 9.1, the auxiliary hammer catch 9.2 and the hammer 7. The pin 23 is provided with a recess with an edge 122a which deflects the main catch 9Ί. The main hammer catch 9Ί is provided with a tooth 122b for cooperating with the edge 122a of the pin 23 and a tooth 108b for cooperating with the tooth 108a of the hammer 7 and a surface 114 for cooperating with the rod 21. The auxiliary catch 9.2 of the hammer is provided with a bearing surface 109b for cooperating with the surface 109a on the hammer. 7. Figures A.2.1 and A2.2 show a partial sectional view of the arrangement of the individual parts of the trigger mechanism according to the invention with separate sides 35 and fingerboards. The sidewalls contain holes for storing the axles of the individual components. Arranged on the double-sided rod 21 with protrusion 106 and contact 107 is a trigger 6 which is connected via a rod 21 to a mechanism consisting of a main hammer catch 9J, an auxiliary hammer catch 9.2, a pin 23, a hammer 7, a fuse 14 with a hammer surface 110. 7, drum springs 33, hub matches 105, car fuse lever 48 and car fuse 13.

Functions of individual components of the trigger mechanism:

The lock 3 serves to tension the hammer 7 by moving backwards after the shot or manually before the shot and through the rod 21 breaks the contact of the trigger 6 with the main catch 9.1 of the hammer after the shot by the protrusion 106.

The trigger 6 in the single-acting trigger mode (SA) via the rod 21 controls the main catch 9J of the hammer and the auxiliary catch 9.2 of the hammer. In the double-acting mode (DA), the trigger 6 controls the main catch 9.1 and the auxiliary catch 9.2 of the hammer and the hammer 7 via the pull rod 21. In the double-acting mode (DAO) only, the trigger 6 controls the hammer 7 via the pull rod 21.

In all modes, the trigger operates the car fuse 13 via the rod 21 and the car fuse lever 48.

The hammer 7 together with the whip spring 33 serves as a source of kinetic energy for moving the fuse 14 by striking the surface 110 of the fuse 14.

Main hammer catch 9Ί in single-acting mode (SA) - catches hammer 7 on tooth 108b by means of tooth 108a in tensioned position in single-acting mode (SA) Auxiliary hammer catch 9.2 in safe hammer start (DC) mode catches hammer 7 by impact on surface 109b when controlled lowering the hammer 7 in a position in which the hammer 7 does not come into contact with the fuse 14 and at the same time serves as a safety catch in case of accidental (uncontrolled) release of the hammer 7 in SA / DA modes with uncompressed trigger 6.

Car fuse 13 - (Fall arrester) A safety element that blocks the movement of the fuse 14 and prevents it from coming into contact with the charge until the trigger 6 is pressed into the position for firing the charge.

The detonator 14, after hitting the hammer 7 on the surface 110 of the detonator, is set in motion and, by striking the surface of the match 105 of the charge, detonates the charge.

The rod 21 transmits the movement of the trigger 6 to the main catch 9.1 of the hammer and the auxiliary catch 9.2 of the hammer.

In the double-acting mode (DA) and exclusively in the double-acting mode (DAO), the rod 21 transmits the movement of the trigger 6 to the hammer 7. The rod 21 transmits the movement of the trigger 6 to the car fuse 13 via the car fuse lever 48. The rod 21 interrupts the contact of the trigger 6 with the main catch 9.1 of the hammer in the single-acting mode (SA) by touching the protrusion 106 by the closure 3 after firing. The rod 21 breaks the contact of the trigger 6 with the hammer 7 by touching 107 the rod to the pin 23 in the DA and DAO modes.

The fingerboard 22 is an actuating element of the mechanism which, by means of the pin 23, switches between the modes SA / DA, SA Locked, DAO and triggers the controlled lowering of the hammer 7.

the pin 23 is controlled by the residence of the fingerboards 22 and by moving it downwards it blocks the movement of the main hammer catch 9J and secures the mechanism in the SA mode against firing when the hammer 7 is tensioned by preventing movement of the cylindrical surface portion 118a of the pin 23 by the hammer main catch protrusion 118b. In the SA mode with the hammer 7 tensioned, as the fingerboards move downwards, the hammer 7 releases the edge 122a of the pin 23 by pulling the edge 122a of the pin 23 against the protrusion 122b of the main catch 9Ί of the hammer from the tooth 108b of the main catch 9J of the hammer. by pressing on the protrusion 122b of the main hammer catch 9J, the main hammer catch 9.1 deactivates and thus switches the mechanism to the DAO mode.

The locking thread 24 secures the position of the fingerboards 22 by means of a spring ball 104d against unintentional movement.

The whip spring 33 - together with the hammer 7 serves as a source of kinetic energy for moving the fuse 14.

The other parts of the trigger mechanism are used to fasten the individual main parts in the container and handle. These include the container 2, the ejector 10, the side wall 35 and the pins which are used to suspend the individual parts and the springs to force the position and direct the movement, the function of which is also apparent from the illustration in the following figures.

Description of the function in individual modes:

SA (Single Action) - Figure B.1 is an overall view of the weapon with the fingerboards in a horizontal position, which in this case corresponds to the mode of the unlocked single-action trigger mechanism (mode SA - unlocked). Figures B.2.1, B.2.2 show the position of the individual elements on the right and left in the SA unlocked mode. In the SA mode, the trigger 6 actuates via the rod 21 the main hammer catch 9.1 and the auxiliary hammer catch 9.2 and the car fuse 13 via the car fuse lever 48. In the SA mode, the tooth 108b of the main catch is 9.1. the hammer is caught by the tooth 108a of the hammer 7, the hammer 7 always being in the SA mode before the firing in the tensioned position. In the SA mode, there are three ways of tensioning the hammer 7, namely manually directing the hammer 7, manually by means of the lock 3 and the lock 3 automatically after the shot. In Figure B.3.1 and Figure B.3.2, the hammer 7 is tensioned directly by hand by pressing on the hammer 7 in the direction of the arrow H1, where it is caught on the tooth 108b of the main catch 9J of the hammer. Figure B.4 shows the tension of the hammer 7 manually by moving the bolt 3 backwards in the direction of the arrow 112, where the bolt 3 pushes the hammer 7 by pressing the surface 113 of the hammer 7, which is caught on the tooth 108b of the main catch 9Ί of the hammer by the tooth 108a. 3 returns to the position as in Figure B.3.1 and the mechanism is thus ready for firing. After pressing the trigger 6 in the direction of the arrow 115, it rotates around the point 116 and by moving the rod 21 pushes on the surface 114 of the main hammer catch 9J, which deflects into the recess 123 on the pin 23 and thus releases the hammer 7 which strikes the fuse 14. After firing, Figure B.5, the bolt 3 moves backwards in the direction of the arrow 117 by pulling the hammer 7 by pressure on the surface 113 of the hammer 7, which remains stretched and caught by its tooth 108a on the tooth 108b of the main catch 9.1 of the hammer and at the same time the pressure of the bolt 3 on the rod 21 in instead of the protrusion 106, the contact of the trigger 6 with the main catch 9.1 of the hammer breaks. After the shot, the bolt 3 returns to the position as in Figure B.3.1 and releasing the trigger 6 performs a reset, which returns the mechanism to its original configuration, followed by another shot by pressing the trigger 6 in SA mode. Assuming that the charge is in the charge chamber, it is necessary to tension the hammer 7 before the first shot. The shot in the SA mode is characterized by significantly lower resistance and shorter trigger operation 6 compared to the DA and DAO modes, and also significantly shorter mechanism compared to DAO mode.

SA Locked by a manual lock - Figure C.1 is a general view of the weapon, where the fingerboards 22 are raised in the SA / DA position - Locked, the hammer 7 is tensioned. The position of the fingerboards 22 is secured against unintentional movement by the locking rivets 24. Figure C.2 is a detailed view (the left fingerboard 22 is offset for better illustration) showing the locking principle performed by rotating the fingerboards 22 upwards in the direction of arrow 124 which rotates the pin 23 to a position in which the cylindrical surface 118a blocks the movement of the main catch 9.1 of the hammer at the protrusion 118b against release from the hammer 7. The situation is shown in Figure C.3.1, where the pin 23 blocks the movement of the main catch 9Ί of the hammer at 118a and 118b. its release from the tooth 108a on the hammer 7. Figure C.3.2 shows the position and arrangement of the auxiliary catch 9.2 of the hammer, which serves in the locked mode SA as a secondary safety element in case of accidental release of the hammer 7.

DA (Double Action) - double action mechanism, also referred to as single action / double action - SA / DA. The overall view of the weapon is in Figure D.1, where the fingerboards 22 are in the SA / DA position (horizontally) and the hammer 7 is lowered. The arrangement of the parts is shown in Figure D.2.1 and Figure D.2.2. In addition to the method in the SA mode, the hammer 7 can also be tensioned through the rod 21 by pressing the trigger 6 in the direction of the arrow 115, engaging the teeth 119 on the hammer 7 and pulling the hammer 7 to the position shown in Figure D.3 and Figure D.4. , where the teeth 119 of the hammer 7 are released from the rod 21 by successive pressure up to the position determined by the mechanism by pushing the rod 21 in place of the surface 120 of the rod 21 against the pin 23 and the released hammer 7 fires a charge by striking the fuse 14. At the same time, the rod 21 pushes the car fuse 13 through the car fuse lever 48 and thus releases the locked fuse 14. After firing, the hammer 7 remains stretched by the bolt 3 on the main catch 9.1 of the hammer as shown in Figure B.5. After the solution, the mechanism is ready for the next shot in SA mode, where the arrangement of parts is as in Figure B.3.1. The DA mechanism is always in combination with the SA mechanism and, provided that the charge is in the charge chamber, it is not necessary to have the hammer 7 tensioned before the first shot.

DC (DeCocker) - deactivation of a tensioned hammer, is the addition of the SA / DA mechanism with a controlled lowering of the hammer 7 without a shot, even if the charge is in the charge chamber. We start from the state according to figure B.3.1 and figure B.3.2, where the hammer 7 is tensioned. Figure E.1 is a view of the weapon, showing the situation of controlled lowering of the hammer 7 without firing by pushing the fingerboards 22 downwards in the direction 121 and the hammer 7 is lowered to the state according to Figure E.1. A detailed illustration of the arrangement of the parts of the mechanism is shown in Figure E.2. The fingerboards 22 rotate the pin 23, which pushes the main catch 9.1 of the hammer at the point 122b at the edge 122a and lowers the hammer 7, which is stopped by the impact of the surface 109a on the surface 109b of the auxiliary catch 9.2 of the hammer. Figure E.3.1 and Figure E.3.2 show the mechanism after the controlled lowering of the hammer 7, where it can be seen that the hammer 7 remains caught at a safe distance from the fuse 14. Even in case of failure e.g. due to mechanical damage to the auxiliary catch 9.2 of the hammer or the hammer 7, the fuse 14 is secured against movement by the car fuse 13 and no firing occurs.

DAO (Double Action Only) - exclusively only double action mechanism, the overall view of the weapon is in Figure F.1, where the fingerboards 22 are in the DAO position, the hammer 7 is lowered. The position of the fingerboards is secured against unintentional movement by the locking rivets 24. Figure F.2 shows an arrangement of parts where the switch to DAO firing mode is done by pushing the fingerboards down, turning the pin 23 which pulls off the main hammer catch 9J by pushing the protrusion 122b and deactivate it. Figure F.3.1 and Figure F.3.2 show the mechanism ready for firing in DAO mode. By pressing the trigger 6 in the direction 115, the hammer 7 is pulled by the rod 21 through the teeth 119 and the pressure is continued to the position determined by the mechanism according to Figure F.4 and Figure F.5 by pushing the rod 21 against the pin 23 in the surface 120 and they fire a charge on the fuse 14. At the same time, the rod 21 raises the car fuse 13 by pressing the car fuse lever 48 and releases the fuse 14 before firing. After firing, the hammer 7 remains untensioned and returns with the lock 3 to the position before firing as in Figure F.3.1 and Figure F.3.2. The hammer 7 is decelerated by the surface 125 of the bolt 3 so that no shot is fired on impact with the fuse. After resolving the mechanism, another shot follows again in DAO mode. The tension of the hammer 7 is characterized by an increased resistance and a long run of the trigger 6 as well as a long cut of the trigger mechanism.

Resetting the trigger mechanism - is an action required to re-prepare the mechanism for firing after breaking the contact of the trigger 6 and the main grip 9.1 of the hammer after firing in Figure B.5, where the lock 3 at the protrusion 106 pushes the rod 21. Reset is performed by moving the trigger 6 forward against movement 115 by spontaneously pressing the expansion spring 30 into the position of the trigger 6 before firing as in Figure B.3.1 in SA mode, or Figure F.3.1 in DAO mode.

Claims (5)

PATENT CLAIMS A trigger mechanism for a self-loading weapon, enabling the only control element on the weapon to select a suitable firing mode, namely single-action / double-action mode (SA / DA) with safe lowering of the hammer (7) with the possibility of securing a tensioned hammer and only double-action mode (DAO) containing trigger (6), by which a hammer (7) is actuated via a double-armed rod (21), characterized in that it consists of a pivotally arranged pin (23), a main hammer catch (9.1) and a hammer auxiliary catch (9.2), which are provided with means for cooperating with each other and for cooperating with a hammer (7), the pin (23) being rotatably adjustable and actuated by an actuating element 22 on the surface of the weapon. Trigger mechanism according to claim 1, characterized in that the pin (23) for cooperating with the main hammer catch (9.1) is provided with an edge (122a), a recess (123) and a part (118a) of the cylindrical surface; and the main catch (9.1) of the hammer for cooperating with the pin (23) is provided with a protrusion (122b) for cooperating with the edge (122a), a tooth (118b) for cooperating with a part (118a) of the cylindrical surface of the pin (23) and the surface (114) for cooperation with a double-arm drawbar (21). Trigger mechanism according to claim 1, characterized in that the auxiliary catch 9.2 of the hammer is provided with a surface (109b) for cooperating with the hammer (7) and the hammer (7) is provided with a bearing surface (109a) for abutment of the auxiliary catch (9.2) of the hammer . Trigger mechanism according to claim 1, characterized in that the actuating element (22) of the pin on the surface of the weapon is accessible from both the right and the left side of the weapon in the form of fingerboards. 5. Self-loading weapon, in particular a pistol with the possibility to select a suitable firing mode by means of a control on the surface of the weapon, namely single-action / double-action mode (SA / DA) with safe lowering of the hammer (7), or with the possibility of securing a tensioned hammer (7) double-acting mode (DAO), consisting of a handle (1) into which a container (2) is inserted, provided with guides (101a) and • · · · aβ • · · β ·· • · · · · · · · < • · ·· ···· u comprising a trigger mechanism, a car fuse (13), a car fuse lever (48), and a closure 3 is slidably arranged in the guides (101a), characterized in that a trigger mechanism according to one of claims 1 to 4 is accommodated in the container (2) , consisting of - a pin (23) comprising an edge (122a) for actuating the main catch (9.1) of the hammer in DAO mode and for safely lowering the hammer (7) and a recess (123) into which the main catch (9.1) engages when deflected to release the hammer (7) in SA / DA mode and a portion (118) of the cylindrical surface for securing the main hammer catch (9.1); - a main catch (9.1) of the hammer, which is provided with a tooth (108b) for catching the hammer (7) in the SA mode, the main catch (9.1) of the hammer further comprising a protrusion (122b) for controlling the deflection from engagement with the hammer (7) by means of a pin (23) in DAO mode and with safe lowering of the hammer (7), by the surface (114), for deflection from engagement with the hammer (7) by means of a rod (21) and a protrusion (118b) for securing in SA / DA mode by means of a pin (23) ); - an auxiliary catch (9.2) of the hammer, which is provided with a surface (109b), for the hammer (7) to strike during safe starting in the DC mode; a- a hammer (7), which is provided with a tooth (108a) for gripping with the main catch (9.1) of the hammer in the idle mode SA and an area (109a) on which the auxiliary catch (9.2) of the hammer rests when the hammer (7) is lowered safely .