PISTOLS

FIELD OF THE INVENTION

The invention relates to a firing-pin mechanism for automatic and semi-automatic pistols that comprises a container for housing and guiding of a straight-running firing pin, a straight guiding firing pin and an automatic block of the firing pin.

BACKGROUND OF THE INVENTION

In general, a great disadvantage of all designs of firing-pin mechanisms that comprise a straight-running firing pin for automatic and semi-automatic pistols is that the striking spring of this firing pin leans against the breech during the tensioning and therefore during its tensioning this tensioning force acts against the force of the return spring. If the straight-running firing pin has too many friction surfaces that increase the force required for its tensioning, back-forcing of the return spring and thus an undesired movement of the breech might occur. Prior-art automatic blocks for automatic and semiautomatic pistols that are part of firing-pin mechanisms are generally designed in such a way that they are situated perpendicularly to the striker axis in a sliding way, or they have the form of a two-armed lever whose pivot they rotate on is perpendicular to the striker axis. A particular design known from the prior art is the design described in the document EP 2860484. In this design, the block is found near the front part of the striker in the breech, wherein the container only contains the striker. A disadvantage of this design is complicated assembly and production of the striker.

The present invention provides a different design of the automatic block, which brings a reduction of the overall friction forces, participating thus in elimination of the above mentioned disadvantages of the prior art.

SUMMARY OF THE INVENTION The above mentioned disadvantages of the prior art are eliminated by the firing-pin mechanism for automatic and semi-automatic pistols in accordance with the invention comprising a container for housing and guiding of a straight-running firing pin and a firing pin block the principle of which is that the container comprises a through hole for mounting of the firing pin and its sliding guiding along the axis of the hole identical to the longitudinal axis of the firing pin and is fitted with a firing pin block that is attached to the container in a rotary way.

In one of the preferred embodiments, the block of the firing pin is mounted in such a way that it can swing round on the plane that is perpendicular to the firing pin axis.

The block of the firing pin is preferably attached to the container with the use of a pivot. The axis of the pivot is preferably parallel to the axis of the hole for mounting of the firing pin.

In one of the preferred embodiments the hole for mounting of the firing pin is circular.

In one of the preferred embodiments, the container comprises in its bottom part, at one of its axial ends, a recess with lateral surfaces to prevent the rotary movement of the firing pin, whose rear part leans against these lateral surfaces with its sides.

In one of the preferred embodiments, the block of the firing pin is a one-armed lever that is, with its top part, connected to the container by means of a pivot and is forced by an elastic means into a position where it engages with tooth created on the firing pin with its first projection, thus blocking the firing pin, the block of the firing pin further comprising a second projection to control the movement of the block from the position where the block blocks the firing pin into the position where the first projection of the block gets out of the engagement with the tooth, thus releasing the firing pin for the striker of the firing pin to strike the percussion cap of the cartridge, the movement of the block being controlled by the movement of the trigger lever through the engagement of the projection of the trigger lever with the second projection of the block. The above mentioned elastic means is preferably a spring mounted on the pin and forcing the block into the position where it engages with the tooth created on the firing pin with its first projection, thus blocking the firing pin.

The container is preferably made of plastic and it is preferably a plastic moulding.

In one of the preferred embodiments, the block is positioned in a first recess provided on a flank of the container, perpendicularly to the axis of the hole, and the spring mounted on the pivot is positioned in a second recess, which is provided on the flank of the container next to the above mentioned first recess.

In one of the preferred embodiments, the hole for housing of the firing pin is fitted with a top guide and bottom guide for straight guiding of the firing pin in this hole with radius recesses at the lateral sides of this hole to reduce the contact area between the surface of the firing pin and the surface walls of the hole to reduce the friction forces acting against the sliding movement of the firing pin.

According to the present invention, a hole for the firing pin is made in the breech, which is extended in the rear part, and the container fitted with the firing pin is inserted in this hole together with the striking spring and the catch of the striking spring, and further with the automatic block, pivot of the automatic block and spring of the automatic block. In the front part of the container, a round hole is provided, which is subsequently interrupted with a radius recess from the right and left side in such a way that in the top part the hole continues with the non- recessed part of the circular hole to the rear part of the container - this is the top guide. The bottom part of the non-recessed circular hole is designed in the same way as the top one in the form of a rail - this is the bottom guide. However, the bottom guide does not continue up to the rear part of the container due to the recess for movement of the striker. This guide, fitted with lateral surfaces, and the used materials prevent the rotary movement of the striker. Further, on the container, perpendicularly to the axis of the circular hole, there is a recess for positioning the automatic block, a recess for the spring of the automatic block and a hole for the pivot of the automatic block, which is parallel to the axis of the circular opening.

The effect of the invention consists in simplicity of the assembly and in the fact that the straight movement of the firing pin is fixed by the circular hole as well as the top and bottom guide and lateral surfaces. This guiding guarantees minimal friction and thus a lower force required to tension the striking spring. It further consists in the location of the automatic block, which consists of a one- armed lever mounted on a pivot, which is parallel to the axis of the firing pin, which prevents the forward movement of the firing pin with its lateral projection.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be clarified in a more detailed way using examples of its embodiment with reference to drawings where: - fig. 1 presents a perspective view from the back of an example of an embodiment of the container,

- fig. 2 presents a view from the back of the container from fig. 1, from another angle,

- fig. 3 shows a perspective view of the container from fig. 1, from its front side,

- fig. 4 is a perspective view of the firing pin,

- fig. 5 presents a perspective view of the firing pin block on the pivot from a side,

- fig. 6 presents a perspective view of the firing pin block on the pivot from fig. 5 from the other side,

- fig. 7 presents a view of the design of the firing pin mechanism according to the invention comprising the container housed in it with the firing pin locked by the firing pin block,

- fig. 8 shows a detail of the firing pin mechanism from fig. 7, and

- fig. 9 shows a view of the firing pin mechanism from fig. 7, but with the block released and with the firing pin in the extended position.

DETAILED DESCRIPTION OF EMBODIMENTS

The firing pin mechanism according to the invention comprises a container 30, the firing pin 1 housed in it and an automatic block 46 connected to the container 30. An embodiment example of the container 30 is shown in detail in fig. 1 to 3, a detail of an embodiment example of the firing pin 1 is presented in fig. 4 and figures 5 and 6 show a detail of the block 46 of the firing pin 1. According to the embodiment example the firing pin mechanism is housed in an automatic or semi-automatic gun in such a way that in the rear part of the breech of the gun, along the axis equal to the barrel axis, a hole for the firing pin 1 is provided that is extended in the rear part and this hole contains the container 30 fitted with the firing pin 1 together with the striking spring 47 and the lock 7 of the striking spring 47, further with an automatic block 46, the pivot 40 of the block 46 and the spring 48 of the block 46. In the front part of the container 30, a round hole 20 is provided, which is subsequently interrupted with a radius recess 22, 21 from the right and left side in such a way that in the top part the hole 20 continues with the non-recessed part of the hole 20 to the rear part of the container 30 - this is the top guide 23. The bottom part of the non-recessed circular hole 20 is designed in the same way as the top one in the form of a rail and this is the bottom guide 24. However, it does not continue up to the rear part of the container 30 due to the recess for the movement of the firing pin 1. This recess is fitted with lateral surfaces 25, 26 preventing the rotary movement of the firing pin 1. Further, on the container 30, perpendicularly to the axis of the circular hole 20, there is the first recess 27 for positioning the block 46, the second recess 28 for the spring 48 of the block 46 and a hole 29 for the pivot 40 of the block 46, which is parallel to the axis of the circular opening 20. The above mentioned embodiment example is characterized in a simple assembly and further in that the straight movement of the firing pin 1 is fixed by the hole 20 as well as the top and bottom guides 23, 24 and the lateral surfaces 25, 26. This guiding 23, 24 guarantees minimal friction and thus a lower force required to tension the striking spring 47. The automatic block 46 consists of a one-armed lever and is mounted on a block 40 that is parallel to the axis of the firing pin 1. The automatic block 46 with its first projection 42 prevents the forward movement of the firing pin 1 in such a way that when the firing pin 1 moves forwards, the tooth 5 of the firing pin 1 hits the first projection 42 of the automatic block 46.

The container 30 is preferably made of plastic, e.g. as a plastic moulding. Fig. 4 shows and embodiment example of the firing pin

1. The front part of the firing pin 1 consists of the striker 2 and further of a recess 3 for positioning of the lock 7 of the striking spring 47. The rear part of the firing pin 1 consists of the part 4 that is fitted with tooth 5 on its inner side to catch the block 46 and with the tooth 6 for engagement with the top tooth 59 for pre- tensioning and tensioning of the firing pin 1.

Figs. 5 and 6 show an embodiment example of the automatic block 46. In a preferred embodiment, the block 46 consists of a one-armed lever containing a hole 41 in its top part that the pivot 40 on which the block 46 is mounted in a partially rotary way passes through. This pivot 40 is positioned in parallel to the axis of the firing pin 1 and it also serves as a shaft for the spring 48 pushing the block 46 into the position where it blocks the firing pin 1. In a preferred embodiment, the block 46 has parallel lateral surfaces 44 and 45. Further, the block 46 is fitted with the first projection 42, which blocks the firing pin 1 in such a way that during the forward movement of the firing pin 1 the firing pin 1 hits the first projection 42 of the automatic block 46 with its tooth 5.

Under this first projection 42, the block 46 is fitted with the second projection 43 employed to control the block 46 by means of the projection 49 on the trigger lever 53 (shown in fig. 7 and 9) in such a way that both these projections 43, 49 are arranged on an axis equal to the movement direction of the trigger lever 53. During triggering, when the trigger lever 53 moves backwards, the projection 49 on the trigger lever 53 approaches the second projection 43 on the block 1 and subsequently mutual interaction of the friction surfaces on the projections 43 and 49 causes deflection of the block 46 and thus unblocking of the firing pin 1. The design of the block 46 of the firing pin 1 mounted on the container 30 enables a very easy installation into the firearm.

Figs. 7 presents a view of an embodiment example of the firing-pin mechanism according to the invention that comprises a container 30 and the firing pin 1 secured with the block 46 housed in it. A detail of the firing pin mechanism from fig. 7 is shown in fig. 8. Fig. 9 shows a view of the firing pin mechanism from fig. 7, but with the block 46 released and with the firing pin 1 in the extended position (shooting position) . The firing pin 1 is released in such a way that the second projection 43 of the block 46 gets in contact with the projection 49 of the trigger lever 53 due to the backward movement of the trigger lever 53 in the direction A and further movement of the projection 49 of the trigger lever 53 causes deflection of the block 46, so the first projection 42 of the block 46 gets out of the engagement with the tooth 5 of the firing pin 1. Together with the backward movement of the trigger lever 53 in the direction A the trigger lever 53 moves downwards in the direction B due to the insertion of the projection 60 into the recess 60a of the tripping pin 95, which results in the top tooth 59 getting out of the engagement with the tooth 6 of the firing pin 1. This enables the forward movement of the firing pin 1, which is shot by the striking spring 47 with its striker 2 against the percussion cap of the cartridge (not shown) .

Now, the function of the firing-pin mechanism will be summarized as it ensues from the description above.

Fig. 7 shows the firing-pin mechanism in the position where the firing pin 1 from fig. 8 is partly pre-tensioned. In this position, the firing pin 1 is locked by the projection 42 of the block 46 in such a way that the projection 42 of the block 46 obstructs the path of the firing pin 1, the unwanted forward movement of the firing pin 1 being hindered by the tooth 5 of the firing pin 1, which hits the first projection 42 of the block 46 in case of an undesired movement of the firing pin 1. Pressing of the trigger sets the trigger lever 53 in motion whose projection 49 hits the second projection 43 of the block 46 and pushes it laterally in such a way that the first projection 42 of the block 46 no longer obstructs the path of the firing pin 1 and cannot block it. The present invention is not limited to the embodiment examples described and shown above, but it also comprises all modifications and changes falling within the frame delimited by the attached patent claims. LIST OF REFERENCE MARKS

1 - firing pin

2 - striker

3 - recess

4 - part

5, 6 - tooth

7 - lock

8 - opening

20 - opening

21, 22 - recess

23 - top guide

24 - bottom guide

25, 26 - lateral surface

27 - first recess

28 - second recess

29 - opening

30 - container

40 - pivot

41 - opening

42 - first projection

43 - second projection

44, 45 - lateral surface 46 - block

47 - striking spring

48 - spring

49 - projection 53 - trigger lever

59 - top teeth

60 - projection 60a - recess

95 - tripping pin A, B - direction