EP2228616B1 - Trigger mechanism for hand guns - Google Patents

Abstract

The trigger mechanism has an impacting lever (2) for actuating a firing pin (6) and a pre-tension spring (13) arranged to the impacting lever. A trigger spring (14) is arranged to the impacting lever. A controlling lever (5) is provided for controlling the pre-tension spring and a trigger bar (8). The pre-tension spring and the trigger spring are accommodated in the impacting lever.

Description

The invention relates to a trigger mechanism for handguns, in particular pistols, according to the preamble of claim 1.

Such a trigger mechanism is from the US 5166458 A known. In the EP 1878992 A1 a trigger mechanism is described, wherein the necessary ignition energy is provided by two separate and individually tunable impact springs. One of the two impact springs serves as a biasing spring for storing a biasing energy, while acting as a trigger spring second striker is tensioned by means of the trigger and determines the trigger force or the trigger resistance. The bias of Vorspanrifeder can be done for example by manually pressing the hammer or by the return of a shot as a result of the recoil automatically closing. The trigger spring is stretched by the shooter on the trigger and gives the actual pull-off force. Together, these two springs create the total energy required to ignite a cartridge, allowing the trigger resistance to be varied and easily adapted to the different needs of the shooter. In this known trigger mechanism, the two impact springs are arranged on separate striker rods below the hammer within the pistol grip piece. For this purpose, a corresponding space must be available.

The object of the invention is to provide a trigger mechanism of the type mentioned, which allows a preload function with reduced trigger force in a compact and space-saving design.

This object is achieved by a trigger mechanism with the features of claim 1. Advantageous embodiments and advantageous developments of the invention are specified in the dependent claims.

In the trigger mechanism according to the invention, the biasing spring and the trigger spring are housed in the hammer. As a result, a Vorspannabzugssystem is created, which is compact and a low trigger actuating force a Ensures sufficient ignition energy of the entire system. The control of the biasing spring is effected by a control lever which is actuated via the trigger rod and cooperates with the biasing spring for biasing or releasing the biasing force.

In a particularly compact and space-saving design, the trigger spring can be arranged within the biasing spring and to this coaxial in the hammer.

In a further advantageous embodiment, the biasing spring are supported on a arranged in the hammer lever biasing spring guide and the trigger spring on a likewise arranged in the hammer trigger trigger guide. The biasing spring is supported in an advantageous manner via a spacer bushing on the biasing spring guide. By selecting appropriately dimensioned spacers and biasing springs thus the withdrawal forces and the trigger characteristic can be changed easily. The changes are easy to carry out and can be achieved without much effort.

The biasing spring guide is preferably slidably and rotatably guided in the hammer and has a latching cam for engagement in a latching recess on a locking groove in the hammer on. For the operation of the biasing spring guide, the control lever in a further constructively expedient embodiment, a slot for the engagement of the locking cam. The control lever is used advantageously not only to control the biasing spring, but can also control the release or blocking of the firing pin. For this purpose, the control lever on a control surface for engagement with a firing pin safety device for the release or blocking of the firing pin.

Figur 1

einen erfindungsgemäßen Abzugsmechanismus einer Pistole in einer Perspektive;

Figur 2

den in Figur 1 gezeigten Abzugsmechanismus bei nicht vorgespannter Vorspannfeder;

Figur 3

den in Figur 1 gezeigten Abzugsmechanismus beim Spannvorgang der Vorspannfeder und

Figur 4

den in Figur 1 gezeigten Abzugsmechanismus bei vorgespannter Vorspannfeder.

Other features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawings. Show it:

FIG. 1

a trigger mechanism of a gun according to the invention in a perspective;

FIG. 2

the in FIG. 1 shown trigger mechanism with non-biased biasing spring;

FIG. 3

the in FIG. 1 shown trigger mechanism during clamping operation of the biasing spring and

FIG. 4

the in FIG. 1 shown trigger mechanism with preloaded biasing spring.

The in FIG. 1 trigger mechanism of a gun shown in perspective comprises a percussive lever 2 rotatably mounted on a percussion lever axis 1, a breaker lever 3 rotatably mounted on the percussion lever axis 1, a control lever 5 rotatably mounted on a percussion lever pin 4, a firing pin 6, a firing pin safety device cooperating with the control lever 5 for releasing or blocking the firing pin 6 and a trigger bar 8, which is hingedly connected at its front end with a trigger 9 and at its rear end with the hammer 2 and the control lever 5 cooperates. The trigger bar 8 is biased by a trigger rod spring 10 to the rear. The hammer 2, a stop 11 is also assigned. The hammer axis 1, the hammer pin 4, the stop 11 and an abutment 12 for the trigger rod spring 8 are arranged in a not shown insert of a handle of the gun.

How out FIG. 1 It can be seen that in the hammer 2 a striker set with a radially outer biasing spring 13 and a coaxial inner trigger spring 14 is housed. For this purpose, the hammer 2 includes a downwardly open blind hole-like recess 15, at the upper closed end 16, the upper ends of the biasing spring 13 and the trigger spring 14 are supported. The lower end of the radially inner trigger spring 14 is supported on a slidably guided within the recess 15 disc-shaped trigger spring guide 17 within the hammer 2. The disk-shaped trigger spring guide 17 in turn sits on the hammer lever 4 laterally offset to the beat lever axis 1.

The lower end of the radially outer biasing spring 13 is supported via a spacer sleeve 18 on an inner annular collar 19 a within the recess 14 of the hammer 2 slidably and rotatably guided, sleeve-shaped biasing spring guide 20. The sleeve-shaped biasing spring guide 20 has on its outer side a locking cam 21. This locking cam 21 protrudes through a lateral locking groove 22 of the hammer 2 and engages at the in FIG. 1 illustrated unstrained home position in an arcuate slot 23 of the control lever 5 a. At the upper end of the latching groove 22, a latching recess 24 is provided for the latching cam 21 on the hammer 2. In the starting position of FIG. 1 is the lower end of the sleeve-shaped biasing spring guide 20 on the disc-shaped trigger spring guide 17.

Hereinafter, the operation of the above-described trigger mechanism based on the FIG. 1 and 4 explained, wherein in the representations 2 to 4, the upper part of the breaker lever 3 and in FIG. 3 the rear part of the trigger lever 8 are cut away for better explanation.

In FIG. 1 the trigger mechanism is shown in a completely relaxed starting position. In this position, the hammer 2 is vertical, the radially outer biasing spring 13 and the coaxial inner trigger spring 14 are relaxed. By the trigger rod spring 10, the trigger bar 8 is pushed to the rear and the trigger 9 forward in the non-actuated starting position. In addition, the control lever 5 is pressed by means of the pull rod 8 pulled backwards by the trigger rod spring 10 into a starting position pivoted to the front via a lower lug 25. If the trigger 9 is actuated in this position, the hammer 2 is pivoted by the trigger rod 8 to the rear and the biasing spring 13 and the coaxial trigger spring 14 are on the hammer pin 4, on which the trigger spring 14 via the trigger spring guide 17 and the biasing spring supported by the spacer sleeve 18 and the biasing spring guide 20, tensioned. The clamping operation is carried out by the offset relative to the hammer axis 1 arrangement of the hammer bolt 4, which ensures the pivoting of the hammer for a shift of the trigger spring guide 17 and the biasing spring guide 20 and thus for the clamping operation of the biasing spring 13 and the trigger spring 14.

In the course of the clamping operation also the control lever 5 with the help of the trigger bar 8 from his in FIG. 1 shown front home position rotated backwards, according to FIG. 2 via an upper control surface 26 of the control lever 5 which is designed as a drop rod or drop gate firing pin 7 is raised from a firing pin 27 and the firing pin 6 releases to move. When the hammer 2 in the in FIG. 2 shown rear release position comes, the trigger bar 8 is disengaged from the hammer 2 and gives this to the forward movement for the actuation of the Striker 6 free. In this clamping and releasing operation of the locking cam 21 runs freely in the arcuate slot 23 of the control lever 5. The locking cam 21 arrives at the in FIG. 2 shown release position not yet to the locking recess 24, so that here no latching can take place.

If, however, the hammer 2 from the in FIG. 1 shown by hand or by the returning in the recoil closure in an in FIG. 3 shown rear end position pivoted, the breaker lever 3 by means of the closure, not shown here also to the rear (in FIG. 1 rotated counterclockwise) and controls the trigger bar 8 with a lower control surface 28 down from, so that the control lever 5 is disengaged from the trigger rod 8 and under spring action back into his in FIG. 1 and 3 shown front home position moves. As a result, the firing pin safety device 7 designed as a drop rod or drop gate can again move into the lower end position and secure the firing pin 6 against displacement by engagement in the firing pin catch 27.

When moving the hammer 2 in accordance with FIG. 3 shown rear end position also the biasing spring 13 and the trigger spring 14 are tensioned by displacement of the corresponding bias spring guide 20 and trigger spring guide 17 by means of the hammer bolt 4. By the stop 11 while the locking cam 21 is pivoted about its longitudinal axis in the detent recess 24 at the upper end of the locking groove 22 and engages with the locking recess 24 while rotating the sleeve-shaped biasing spring guide 20 When the closure passes after the repeating process back to its front starting position , Also, the hammer 2 goes back to its front starting position, whereby the radially inner trigger spring 14 relaxes again and also takes the trigger spring guide 17 in its initial position. The biasing spring 13, however, is held by the engagement of the latching cam 21 in the latching recess 24 in a biased position.

If the trigger 9 is actuated from this preloaded position, the hammer 2 on the trigger rod 8 back to the according to FIG. 4 pivoted trigger position shown. In this case, the radially inner trigger spring 14 is stretched over the exhaust pin guide 4 supported on the trigger lever pin 4. The biasing spring 13 is held under tension by means of the spacer sleeve 18 and the biasing spring guide 20, since this remains over the detent cam 21 held in the detent recess 24 in the cocked position. By operating the trigger 9 is on the trigger rod 8 and the control lever 5 backwards (in FIG. 4 rotated counterclockwise) and raised via the control surface 26 on its upper side designed as a drop rod or drop gate firing pin 7 from the firing pin 27 to release the firing pin 6 at.

At the in FIG. 4 shown trigger position of the hammer 2, the trigger rod 8 is disengaged from the hammer 2, so that this initially only under the action of the trigger spring 14 forward (in FIG. 4 in a clockwise direction) moves until the locking cam 21 of the biasing spring guide 20 runs onto a rear surface 29 of the control lever 5. Characterized the sleeve-shaped biasing spring guide 20 is rotated about its longitudinal axis, that the locking cam 21 is disengaged from the detent recess 24 on the hammer 2. From this point, the hammer 2 is pressed under the action of the biasing spring 13 and the trigger spring 14 in its front end position for actuating the firing pin 6. As a result, the ignition energy required for igniting a cartridge can also be provided with a low pull-off force.

Claims (12)

1. Trigger mechanism for hand guns, in particular pistols, with a firing lever (2) for actuating a firing pin (6), a cocking spring (13) associated with the firing lever (2), a trigger spring (14) associated with the firing lever (2), a control lever (5) for controlling the cocking spring (13) and a trigger rod (8) which is connected at its front end to a trigger (9) and at its rear end co-operates with the firing lever (2) and the control lever (5), wherein the trigger spring (14) is housed in the firing lever (2), characterised in that the cocking spring (13) is also housed in the firing lever (2).
2. Trigger mechanism according to claim 1, characterised in that the trigger spring (14) is arranged inside the cocking spring (13).
3. Trigger mechanism according to claim 1 or 2, characterised in that the cocking spring (13) is supported on a cocking spring guide (20) arranged in the firing lever (2).
4. Trigger mechanism according to one of claims 1 to 3, characterised in that the cocking spring (13) is supported by means of a spacer sleeve (18) on the cocking spring guide (20).
5. Trigger mechanism according to one of claims 1 to 4, characterised in that the trigger spring (14) is supported on a trigger spring guide (17) arranged in the firing lever (2).
6. Trigger mechanism according to claim 5, characterised in that the trigger spring guide (17) is supported on a firing lever pin (4).
7. Trigger mechanism according to one of claims 3 to 6, characterised in that the cocking spring guide (20) is guided so as to be displaceable and rotatable in the firing lever (2) and comprises a detent cam (21) for engagement in a detent recess (24) in a detent slot (22) in the firing lever (2).
8. Trigger mechanism according to claim 7, characterised in that the control lever (5) comprises a slot (23) for engagement of the detent cam (21) on the cocking spring guide (20).
9. Trigger mechanism according to one of claims 1 to 8, characterised in that the control lever (5) comprises a control face (26) for actuating a firing pin safety catch (7) for releasing or blocking the firing pin (6).
10. Trigger mechanism according to one of claims 1 to 9, characterised in that the trigger rod (8) has an associated disconnecting lever (3) for controlling the engagement of the trigger rod (8) with the firing lever (2).
11. Trigger mechanism according to one of claims 7 to 10, characterised in that the firing lever (2) has an associated stop (11) for actuating the detent cam (21) on the cocking spring guide (20).
12. Trigger mechanism according to one of claims 1 to 11, characterised in that the trigger rod (8) is cocked by a trigger rod spring (10).

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