EP0973005B1 - Pistol with precocked percussion pin - Google Patents

Description

The invention relates to a gun, consisting of a trigger device containing housing and sliding on this, the barrel and the closure containing slide, wherein the closure with a drivable by a striker spring Firing pin is provided and a switch over a trigger bar on a trigger device acts, which one with a nose in the trajectory of the firing pin having a cross-catching piece.

Hammerless self-loading pistols have over those with hammer or cock the Advantage of simple design and operation. They work in the "Double Action" or in the "Single Action" mode or intermediate forms. In the former case, pressing the Züngels first tensioned the spring and after passing through the trigger path automatically the shot fired. This requires a long and exhausting for the trigger finger Tension and high pull-off force. This mode of operation is therefore predominantly at Authorities in use and less suitable for the civil market.

In the second case, the striker spring through the forward and backward closure piece cocked and held by the catch piece in a cocked position until the shot by pressing of the tongue is triggered. But because the striker to the required ignition energy To deliver strong, the trigger weight is significant. In this mode naturally, safety measures are more important.

From AT 395 909 B (GLOCK) a generic pistol is known in which the Strike spring is biased half and when pulling first the second half of the bias and then triggering the shot, for what purpose the trigger bar has a backdrop and for the first half of the bias a complicated and filigree mechanism is provided. Due to the partial preload and despite a specially designed relief spring is to be paid by the trigger finger Work in terms of strength and way, although somewhat reduced, is an exact firing but not given.

From EP 730 135 A1 (WALTHER) another generic pistol is known, which can be operated in "Double Action" as well as in "Single Action" mode. For The former mode is a slide-guided trigger bar cooperating with the firing pin provided, for the second mode a resting on a support and only swiveling catch piece. To pull off is after a kinematically very long Leerweg the support tipped away by the action of the trigger bar, with considerable Frictional and Hebelarmereinflüsse disturbing. The multipart and Maßsensible Mechanism should be the transition or light conversion from one to the other Enable operating mode.

It is therefore an object of the present invention to provide a hammerless pistol improve that with a simple construction as possible a decisive improvement the trigger characteristic achieved in meeting high security requirements becomes.

a) das Fangstück in Längsrichtung verschiebbar und abwärts verschwenkbar im Griffstück geführt und von einer ersten Feder aufwärts beaufschlagt ist,

b) eine gehäusefeste Schwelle vorgesehen ist, die mit einer Rampe des Fangstückes zusammenwirkt, sodaß beim Abziehen das Fangstück zuerst in Längsrichtung verschoben wird und nach Überschreiten der Schwelle abwärts schwenkt,

c) vor dem Fangstück ein um eine gehäusefeste Achse schwenkbarer Schlepphebel vorgesehen ist, der von einer zweiten Feder nach hinten zum Fangstück hin belastet ist, im Abstand von seiner Achse eine Scheitelkante aufweist und sich in seiner vordersten Stellung am Gehäuse abstützt,

d) das Fangstück vorne ein Näschen aufweist, das auf der Scheitelkante des Schlepphebels aufliegt, wenn sich Fangstück und Schlepphebel in einer hinteren Stellung befinden.

According to the invention this is achieved in that

a) the catching piece is guided displaceably in the longitudinal direction and pivotable downwards in the grip piece and is acted upon by a first spring upwards,

b) a housing-fixed threshold is provided, which cooperates with a ramp of the catching piece, so that when pulling the catching piece is first displaced in the longitudinal direction and swings down when the threshold is exceeded,

c) in front of the catching piece a rocker arm pivotable about a housing-fixed axis is provided, which is loaded by a second spring to the rear towards the catch piece, has a vertex at a distance from its axis and is supported in its foremost position on the housing,

d) the catch piece at the front has a nose which rests on the vertex edge of the finger lever when the catch piece and the finger lever are in a rear position.

The required parts are few and consistently easy and cheap to manufacture, they can be installed in a machine-friendly way. The main advantages of this construction according to the objective result from the interaction of all parts, see functional description further down. In particular, the ramp ensures according to feature b) an exact shot firing with short and dry firing range, reduces the second spring according to feature c) the trigger weight felt, and sets the nose according to Feature d) in cooperation with the first spring according to feature a) sure that the catching piece returns to the safe starting position. Finally, can The trigger mechanism is still very easily rebuilt in the "Double Action" mode by removing the drag lever and installing a longer catch.

In development, the housing-fixed threshold is as a bolt with circular cross-section and the Ramp designed as an obtuse-angled edge (claim 2). This will make the production further cheapened and despite the exact firing and high accuracy a softer Transition from the forward stroke to trigger reached.

In a preferred embodiment, the hammer has a flag with inclined Attack surface and the nose of the catch piece a sloped attack surface, and are the Incident angle of the attack surfaces and the obtuse angle of the edge approximately equal (Claim 3). This achieves a further improvement of the feeling of withdrawal: With the backward movement slides the catch piece on the flag and on the blunt Angle downwards. So the friction force spreads on a longer path and it finds despite the backward movement no further tensioning of the striker instead of what the trigger weight would increase.

A further improvement of safety and ease of operation is thereby achieved that the catching piece a recess with a rear thrust surface and on has a front control surface and cooperating with the end of the trigger bar can be applied to the thrust surface, so that the end of the trigger bar during downward pivoting of the catching piece is disengaged (claim 4). This will be the moment of triggering the trigger bar decoupled from the catching piece and on reaching the ready to fire position by itself coupled again. That enhances safety, in particular high level, when the front end of the trigger bar hinged to the reins and the tongue is provided with a trigger safety (claim 5). This is also full If safety given.

In a further development of the invention, the trigger weight can be adjusted by the second spring applied force by acting on the second leg by means of a Adjusting screw is adjustable (claim 6) and when the force exerted by the second spring Force smaller than the force of the striking spring is (claim 7).

Fig.1:

Eine erfindungsgemäße Pistole im Längsschnitt,

Fig.2:

Detail A in Fig.1, vergrößert, in einer ersten Stellung,

Fig.3:

Detail A in Fig.1, vergrößert, in einer zweiten Stellung.

Fig.4:

Detail A in Fig.1, vergrößert, in einer dritten Stellung.

In the following the invention will be described and explained with reference to figures. They show:

Fig.1:

A pistol according to the invention in longitudinal section,

Figure 2:

Detail A in Figure 1, enlarged, in a first position,

Figure 3:

Detail A in Figure 1, enlarged, in a second position.

Figure 4:

Detail A in Fig.1, enlarged, in a third position.

In Fig. 1, a part of the housing is denoted by 1 and a slide guided thereon 2. The carriage 2 includes in a known manner a lockable barrel 3 and a closure 4, which cooperates with a summarily denoted by 5 trigger device. In the shutter 4 is a firing pin against the force of a spring 8 slidably guided and provided with a flag 9, the down through a slot 10th protrudes in the closure 4 in the region of the trigger device. The term housing is used summarily and in a kinematic sense, since depending on the material, the housing in one piece or or made of plastic with corresponding metallic inserts can be.

A tongue 13 is pivotally mounted in the housing 1 about a Züngelachse 14 and with a front cranked trigger bar 15 connected via a pin 16. In the tongue 13 is a Züngelsicherung 17 pivotally mounted about the pin 16, the locking tooth 18 in known way cooperates with the housing 1 and thus prevents the removal, if not the tongue fuse is pressed. In the position shown is the Züngelsicherung opened, so that the tongue can be moved.

Fig. 2 shows the trigger device 5 in detail. A catching piece 20 with a nose 21 above (she has with the flag 9 a common attack surface) is by means of two at her rear end on both sides arranged stub 22 in grooves 23 of the housing longitudinally displaceable guided and swiveled around the stub 22. The catching piece 20 has one of bottom accessible recess 24, which is essentially a thrust surface 25th and a control surface 26 is limited, in which the one, bent, end 27 of the trigger bar 15 engages. Furthermore, a crosspiece 28 is provided, on which the first Leg 29 of a first spring 30 attacks and on this a forward-upward Exercise power. The first spring 30 is here a hairpin spring, the middle part of a Cross pin 31, which is also an axis, wraps around. At its front upper End of the catch piece has a nose 32. Under the nose 32 extends in the significant vertical chest area 33.

A cylindrical pin 35 is fixedly arranged in the housing, it forms a threshold and to him the second leg 36 of the first spring 30 is supported. The threshold 35 acts with a Ramp 37 together, by a horizontal leg surface 38 and a formed with this an obtuse angle forming ascending leg surface 39 is. The obtuse angle is approximately equal to the angle of the interacting attack surfaces the nose 21 and the flag 9.

A drag lever 40 is rotatably mounted about the housing-fixed pivot axis 31 and the Catch 20 upstream. It consists of one or two arms 41 and a bridge 42, to which the first leg 44 of a second spring 43 (here also a hairpin spring) acts. Its second leg 45 is located on a part of the housing 1, a housing wall 46 on. The rear upper end of the bridge 42 forms a crest edge 47, which in still too descriptive manner with the nose 32 cooperates. The housing wall 46 serves the drag lever 40 in its foremost position as a stop on which he is under can support the pressure of the striker. By another adjusting screw 50 in the housing wall 46 can act on the second leg of the second spring 43 be, whereby the trigger weight is adjustable. By adjusting the stop and thus the end position by means of a screw 51 can be the forward stroke on the trigger adjust.

The device described works as follows:

In the position of FIG. 2 , the device is ready to fire when the striker spring 8 is tensioned. The flag 9 is supported on the nose 21. The catching piece 20 lies on the one hand on the threshold 35 and therefore can not swing down and on the other hand in the longitudinal direction on the drag lever 40 at. Since the striking spring 8 is much stronger than the second spring 43, it overcomes their force and pushes the rocker arm 40 forward, where it rests against the housing wall 46 and the adjusting screw 51. The end 27 of the trigger rod 15 is located in the recess 24 and is located on the thrust surface 25 at. About the trigger guard 17, the entire trigger system is positively locked and secured against falls.

If the tongue is then actuated, the trigger rod 15, acting on the thrust surface 25, pushes the catching piece 20 backwards, against the force of the striking spring 8, but supported by the second spring 43. As long as the horizontal leg surface 38 of the ramp 37 on the Threshold 35 is guided, the catching piece 20 moves without pivoting to the rear. Only when the horizontal leg surface 38 merges into the ascending leg surface 39, the catching piece is pivoted downwards by the force of the striking spring 8 and the nose 21 releases the flag. This position can be seen in Fig.3 . When swiveling down, the approximately parallel alignment of the ascending leg surface 39 and the engagement surface between the lug 21 and the lug 9 makes itself noticeable in an advantageous manner. When swinging down the catching piece 20 and the bent end 27 of the trigger rod 15 is pushed by the action of the control surface 26 of the thrust surface 25, so that the connection between the trigger rod 15 and catching piece 20 is temporarily interrupted.

4 shows what happens after the return of the carriage 2, during the tensioning of the firing pin spring 8. As long as the firing pin spring 8 still exerts no force on the catching piece 20, this is pushed by the second spring 43 to the very rear and also pivoted from the first spring 30 all the way up. As a result, the vertex edge 47 of the finger lever 40 comes under the nose 32 of the catching piece 20. In the action of the shutter 4 of the firing pin 7 comes with its flag 9 back to the nose 21 of the catching piece 20 to the plant and moves it forward. Because the nose 32 rests on the vertex edge 47, the catching piece 20 but can not swing down and it is raised in the executed together with the cam follower 40 forward movement of its ramp 37 via the threshold 35. During this joint forward movement, however, the breast surface 33 which adjoins the nose at a lower distance from the axis 31 at the bottom causes the apex edge 47 to be pulled out below the nose 32. By now grown during the forward movement force of the striking spring 7, the catching piece 20 sets with its ramp 37, with its horizontal leg surface 38, again on the threshold 35, thus keeping the firing pin in a cocked position. Now the state of Fig.2 is reached again.

Claims (8)

1. Pistol made up of a casing containing a trigger device and of a carriage sliding on this and containing the barrel and the breech, whereby the breech (4) is provided with a percussion pin (7) which can be driven by a percussion spring (8) and a tip (13) effects the trigger device (5) via a trigger rod (15), which trigger device has a catch piece (20) which has a projection (21 ) that engages in the travel path of the percussion pin, characterised in that

   a) the catch piece (20) is guided in the casing (1) so that it can be moved lengthwise and pivoted downwards and is pressed upwards by a first spring (30),

   b) a step (35) is provided built into the casing and this step acts together with a ramp (37) of the catch piece (20) so that, when the trigger is pulled, the catch piece is first moved lengthwise and once the step is passed it pivots downwards,

   c) in front of the catch piece (20) there is a slip lever (40) hinged on an axle built into the casing, which slip lever is loaded backwards to the catch piece by a second spring (43), has an apex edge (47) at a distance from its axis (31) and, in its furthest forward position, is supported on the wall (46) of the casing,

   d) the catch piece (20) has a small projection (32) in front, which rests on the apex edge (47) of the slip lever (40), if the catch piece and the slip lever are in a rear position.
2. Pistol according to claim 1, characterised in that the step (35) built into the casing is formed as a pin with a circular section and the ramp (37) is formed from two obtuse angled flange faces (38, 39) that abut each other.
3. Pistol according to claim 2, characterised in that the percussion pin (7) has a lug (9) with an inclined contact surface and the projection (21 ) of the catch piece (20) has an inclined contact surface, and in that the angle of inclination of these two contact surfaces and the second flange surface (39) are more or less identical.
4. Pistol according to claim 3, characterised in that the catch piece (20) has a recess (24) with a thrust surface (25) at the back and a control surface (26) further forward and the end (27) of the trigger rod (15) that acts together with the catch piece can be placed against the thrust surface (25) so that the end (27) is disengaged when the catch piece is pivoted downwards.
5. Pistol according to claim 1, characterised in that the front end (27) of the trigger rod (15) is coupled to the tip (13) and the tip is provided with a trigger safety device (17).
6. Pistol according to claim 1, characterised in that the force exercised by the second spring (43) can be adjusted by acting on its second flange (45) using an adjusting screw (50).
7. Pistol according to claim 1, characterised in that the force exercised by the second spring (43) is less than the force of the percussion spring (8).
8. Pistol according to claim 1, characterised in that the first and/or second spring (30, 43) are hairpin springs wound on the axle (31) of the slip lever (40).

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