CN110998218A

CN110998218A - Gun comprising a hammer and a firing pin

Info

Publication number: CN110998218A
Application number: CN201780089553.0A
Authority: CN
Inventors: 迪米特里·斯特雷申斯基
Original assignee: Arsenal Firearms Finance Ltd
Current assignee: Arsenal Firearms Finance Ltd
Priority date: 2017-04-14
Filing date: 2017-04-14
Publication date: 2020-04-10
Also published as: PH12019502297A1; BR112019021544A2; KR20200035233A; IL269951B; EP3610218A1; ZA201906511B; WO2018189574A1; MX2019012123A; US20210116198A1; AU2017408879B2; EP3610218B1; AU2017408879A1; EA201992457A1

Abstract

The gun (1) comprises a frame (2), a barrel (4) supported by the frame (2), a sleeve (8) longitudinally translatable with respect to the barrel (4), and at least one hammer (10), the hammer (10) being rotatably mounted with respect to the frame (2) to move at least one firing pin (12) of the gun (1) towards the barrel (4). A centre plane (Z) extends through the gun (1) between the opposite gun sides (14, 16) and the axis of rotation (R) of the hammer (10) is located on or substantially parallel to the centre plane (Z).

Description

Gun comprising a hammer and a firing pin

The present invention relates to a gun.

The firing devices in semi-automatic "short recoil" guns typically comprise either floating or hammer operated strikers, for example, EP2603764 by the present applicant discloses the former type of device.

Firearms having hammer-operated strikers are known to have a number of disadvantages, particularly the problem of accidental firing when the weapon is dropped.

The present invention proposes a gun with an improved hammer system with a view to at least solving the above-mentioned problems, in particular by proposing a gun with a more robust and reliable rotary hammer system.

This object is achieved by a gun according to claim 1. The dependent claims show variants of the preferred embodiments.

The invention will be described in detail below with reference to the attached drawing figures, wherein:

fig. 1 and 2 show a perspective view, partially in section, of a sleeve and a gun rest assembly, respectively, in a possible embodiment, and a corresponding perspective view of a hammer system of the invention;

fig. 3 and 4 show a top view of the gun of the invention in a possible embodiment, in which the sleeve is partly broken away and the two figures show different positions of the hammer and the firing pin;

fig. 5 and 6 show longitudinal cross-sectional perspective views of the sleeve and the gun rest of the present invention in positions corresponding to fig. 3 and 4, respectively;

fig. 7 and 8 show the gun of the invention in two possible positions of the hammer from a proximal rearward perspective, with the gun carrier and sleeve portions omitted for clarity.

With reference to the preceding figures, the reference numeral 1 generally designates a gun.

According to a possible embodiment, the gun 1 is a semi-automatic pistol or an automatic pistol (i.e. suitable for the round of a round).

According to one embodiment, the gun 1 is a short recoil gun (short recoil gun).

The gun 1 comprises a frame 2, a barrel 4 supported by the frame 2, a sleeve 8 longitudinally translatable with respect to the barrel 4, and at least one hammer 10.

In the present invention, "longitudinal" means in the direction X of the barrel 4.

According to one embodiment, the barrel 4 is supported by the frame 2 in a longitudinally movable manner to allow the barrel 4 to sit back.

According to one embodiment, the gun 1 includes a trigger (omitted from the figures) rotatably or translatably mounted on the gun carriage 2 and configured to be depressed by a user to fire a cartridge.

As shown in fig. 3, the center plane Z extends through the gun 1 between the

opposing gun sides

14, 16.

In other words, the central plane Z is a plane dividing the thickness of the gun 1 into two almost mirror-symmetrical halves.

A hammer 10 is rotatably mounted with respect to the frame 2 to move at least one firing pin 12 of the aforementioned gun 1 in a distal direction towards the barrel 4.

In this specification, the term "distal" is used to denote a component located toward the muzzle 54; in contrast, the term "proximal" refers to the part of the gun that is positioned near or toward the opposite and rearward end 58 of the gun 1.

With regard to the construction of barrel 4, it defines a firing chamber 6 at the proximal end, according to one embodiment. The firing chamber is for at least partially receiving a cartridge.

According to one embodiment, the firing pin 12 is movable towards the firing chamber 6 by means of a firing device, wherein the firing device comprises the hammer 10 and can be triggered by said trigger.

According to one embodiment, the striker 12 is housed within the sleeve 8 so as to be longitudinally movable within the sleeve seat 62.

According to an embodiment, the striker 12 passes through the inner wall 64 of the sleeve 8 (via the needle hole 66) and is thereby arranged to project towards and within the firing chamber 6.

According to one embodiment, barrel 4 opens distally toward muzzle 54 and advantageously defines an internal rifling 56, oriented, for example, in a clockwise or counterclockwise direction.

According to an embodiment, sleeve 8 is longitudinally slidable/translatable with respect to barrel 4 between a forward configuration, in which it closes firing chamber 6, and a rearward configuration; in the rearward configuration, the sleeve 8 is spaced from the proximal port 60 of the firing chamber 6 to open the latter.

According to the invention, the rotation axis R of the hammer 10 is located on the central plane Z or substantially parallel to said plane Z.

According to an embodiment, the barrel 4 extends in a substantially tubular manner along the longitudinal direction X.

According to an embodiment, the rotation axis R is substantially perpendicular to the longitudinal direction X.

According to an embodiment, the axis of rotation R is substantially perpendicular to the longitudinal direction X in a side view taken from one

side

14, 16 of the gun in a direction orthogonal to the centre plane Z.

According to an embodiment, the hammer 10 is integral with the sleeve 8 during the translational movement of the sleeve 8.

According to one embodiment, the hammer 10 is hinged to said sleeve 8.

According to an embodiment, the gun 1 comprises a rotation pin 18 of the hammer 10, which extends along the rotation axis R and is at least partially housed within the thickness of the sleeve wall 22.

According to an embodiment, the sleeve wall 22 is a wall bounding the sleeve in an "upward" direction relative to the direction of the gun shown in fig. 1.

According to an embodiment, the sleeve wall 22 delimits the rotation hole 20, wherein the rotation pin 18 is partially inserted, for example rotatably, in the rotation hole 20.

According to an embodiment, the rotation hole 20 passes completely through the thickness of the sleeve wall 22 and opens towards the top surface 24 of the sleeve 8 (e.g. to enable a lubricating operation).

According to an embodiment, the hammer 10 is completely housed in the sleeve compartment 26 of the sleeve 8 in each of its angular positions.

According to an embodiment, the sleeve compartment 26 is at least partially delimited by the gun rest 2, for example, in a position opposite the sleeve wall 22.

According to an embodiment, the sleeve compartment 26 is delimited by the sleeve wall 22 and the side walls 68, 72 of said sleeve 8 which are connected to the sleeve wall 22 and extend at substantially right angles therefrom.

According to an embodiment, the hammer 10 substantially or essentially has the shape of a body of revolution.

According to an embodiment, the hammer 10 has a substantially circular cross section in a plane substantially perpendicular to the rotation axis R.

According to an embodiment, the gun 1 includes the elastic means 28 and at least one holding member 30, wherein the elastic means 28 constantly urges the hammer 10 to the firing position (as shown in fig. 6), and the holding member 30 serves to mechanically hold the hammer 10 in the standby position (as shown in fig. 5) against the force exerted by the elastic means 28.

According to an embodiment, the holding member 30 is movable by a trigger for releasing the hammer 10 towards the firing position.

According to an embodiment, in said firing position, the firing pin 12 projects partially into the firing chamber 6, whereby the firing chamber 6 is oriented substantially parallel to the longitudinal direction X at each moment of the firing cycle of the gun 1.

In other words, in this embodiment, the firing chamber does not experience tilting motion as many prior art firearms do.

According to an embodiment, the gun 1 comprises elastic means 28 engaged between the sleeve 8 and the first engagement member 32 of the hammer 10.

According to an embodiment, the elastic means 28 comprise a helical spring.

According to one embodiment, the elastic means 28 are in a pre-compressed state between the sleeve 8 and the first engagement member 32.

According to one embodiment, elastic means 28 comprises opposite anchoring elements 74, 76 associated with sleeve 8 and first engaging member 32, respectively.

According to one embodiment, the first anchor 74 is substantially fork-shaped.

According to an embodiment, the first anchor 74 is housed partly within the thickness of the sleeve 8, more precisely within the inner wall 64.

According to one embodiment, second anchor 76 includes a loop portion 78 to receive at least a portion of first engagement member 32.

According to one embodiment, the firing pin 12 is pushed towards the barrel 4 by the second engagement member 34 of the hammer 10.

According to an embodiment, the first engagement member 32 and the second engagement member 34 are positioned eccentrically with respect to the rotation axis R.

According to one embodiment, first and

second engagement members

32, 34 project from opposing surfaces 44, 46 of hammer body 36.

More precisely, one of said surfaces 44, 46 is located above and the other below the median orthogonal plane of said hammer body with respect to the rotation axis R.

According to an embodiment, the first and

second engagement elements

32, 34 each comprise an element pin extending substantially parallel to the rotation axis R.

According to one embodiment, the second anchor 76 is coaxially mounted onto the element pin that constitutes the first engagement member 32.

According to an embodiment, the first engaging member 32 and/or the second engaging member 34 are located in a fan-shaped recess 48 of the hammer 10, which is angularly delimited by hammer surfaces 50, 52.

According to an embodiment, the rotation of the hammer 10 brings one of said hammer surfaces 50, 52 into abutment (or corresponding) with the resilient means 28 and/or with the firing pin 12 to determine the end of stroke position of the hammer 10.

According to an embodiment, the hammer surfaces 50, 52 extend axially along the rotation axis R.

According to one embodiment, the firing pin 12 comprises a pin body 38 connected to the hammer 10 and a needle tip 40 extending distally towards the barrel 4.

According to one embodiment, the needle body 38 and the needle tip 40 are made of one piece of the same material.

According to one embodiment, the needle body 38 and the hammer 10 are connected by a cam mechanism.

According to an embodiment, the needle body 38 defines a needle groove 42, wherein the second engagement member 34 or the second element pin partially fits into the needle groove.

According to this embodiment, the surfaces defining the needle groove 42 constitute cam surfaces for moving the needle tip 40 towards the needle cannula 4 and for moving the needle tip 40 away from the needle cannula 4.

According to one embodiment, the gun 1 comprises a locking device 70 which secures the barrel and sleeve (in particular in order to bring them together) in the forward configuration and releases the sleeve 8 in the rearward configuration so that it can be moved independently (proximally or rearwardly) to open the firing chamber 6.

In other words, the locking device 70 serves to mechanically restrain/release the barrel and sleeve when the gun 1 fires a cartridge.

According to one embodiment, the locking device 70 may be made according to the teachings of EP2603764 or PCT/IB2016/052242 of the present applicant.

As previously described, upon release of the trigger operated retaining member 30 of the hammer 10, the force exerted by the spring means 28 will move the trigger 10 from the rest position to the firing position (in a counter clockwise direction according to fig. 3).

When a reverse movement is concerned, which occurs after the firing of a bullet, according to a possible embodiment, the trigger 10 and the gun carrier 2 each comprise cooperating surfaces (not shown) which exert a return force on the trigger 10 when the sleeve 8 moves from the rearward configuration to the forward configuration, so that it moves in the clockwise direction of fig. 4 against the (smaller) force of the resilient means 28 in the standby position. In this position, the holding member 30 can take in the hammer again and hold it in the standby position.

Innovatively, the gun of the present invention is adapted to excellently overcome the aforementioned drawbacks of the prior art.

Advantageously, the gun of the invention has excellent balance, so that a high level of shooting accuracy can be maintained in rapid shooting, even in simultaneous firing for certain variants.

Advantageously, the hammer system allows to reduce the overall dimensions of the firearm and of the sleeve due to the rotational positioning of the various components of the gun.

Also, advantageously, the gun of the invention allows reducing mechanical stresses between the moving parts.

Advantageously, the gun of the invention is suitable to be produced in a very economical manner.

Advantageously, the gun of the present invention allows for reduced vertical forces during firing, thereby improving overall firing accuracy.

Advantageously, the gun of the present invention is easier to maintain than conventional weapons.

Advantageously, the gun of the invention allows for rapid maintenance operations without disassembling the gun.

Advantageously, the gun of the invention has the hammer completely housed inside the sleeve, avoiding any possible defective operation due to contact with external objects.

Advantageously, the hammer system has a low inertia, thereby reducing the factors that interfere with the accuracy of the shooting.

Advantageously, the gun of the invention allows to achieve a fail-safe position of the hammer in standby and firing configurations.

Advantageously, the gun of the present invention avoids striking the firing pin, and the firing pin is smoothly guided in each position by the mechanical connection of the firing pin to the hammer.

Those skilled in the art may modify the various embodiments of the gun described above or substitute other functionally equivalent elements to meet specific needs.

These variants are also included in the scope of protection defined by the claims.

Moreover, each variant described as belonging to a possible embodiment can be implemented independently of the other variants described.

Claims

1. Gun (1) comprising:

-a gun rest (2);

-a barrel (4) supported by the frame (2);

-a sleeve (8) longitudinally translatable with respect to the barrel (4);

-at least one hammer (10) rotatably mounted with respect to the frame (2) to move at least one firing pin (12) of the gun (1) towards the barrel (4);

wherein a centre plane (Z) extends through the gun (1) between opposite gun sides (14, 16);

the gun (1) is characterized in that the axis of rotation (R) of the hammer (10) is located on or substantially parallel to the centre plane (Z).

2. Gun according to claim 1, wherein the barrel (4) extends in a longitudinal direction (X), the axis of rotation (R) being substantially perpendicular to the longitudinal direction (X).

3. Gun according to any of the previous claims, wherein the hammer (10) is integral with the sleeve (8) during the translational movement of the sleeve (8) and the hammer (10) is articulated with the sleeve (8).

4. A gun according to any one of the preceding claims, wherein the gun comprises a rotation pin (18) of the hammer (10), which rotation pin (18) extends along the axis of rotation (R) and is at least partially accommodated within the thickness of a sleeve wall (22).

5. Gun according to claim 4, wherein said sleeve wall (22) delimits a rotation hole (20) in which said rotation pin (18) is partially inserted, said rotation hole (20) passing completely through the thickness of said sleeve wall (22) and opening towards the top surface (24) of said sleeve (8), for example to enable lubricating operations.

6. A gun according to any one of the preceding claims, wherein the hammer (10) is fully housed in a sleeve compartment (26) of the sleeve (8) in each of its angular positions, said sleeve compartment (26) being at least partially delimited by the gun rest (2).

7. Gun according to any of the preceding claims, wherein the hammer (10) has a general or substantial shape of a body of revolution.

8. A gun according to any of the preceding claims, wherein the gun comprises resilient means (28) and at least one retaining member (30), the resilient means (28) constantly urging the hammer (10) towards a firing position (fig. 6), the retaining member being adapted to mechanically retain the hammer (10) in a rest position (fig. 5) in opposition to the force exerted by the resilient means (28), the retaining member (30) being movable by a trigger for releasing the hammer (10) towards the firing position.

9. Gun according to any of the previous claims, wherein the gun comprises a resilient means (28) engaged between the sleeve (8) and a first engagement member (32) of the hammer (10), wherein the striker (12) is pushed towards the barrel (4) by a second engagement member (34) of the hammer (10).

10. Gun according to claim 9, wherein said first engagement member (32) and said second engagement member (34) are positioned eccentrically with respect to said rotation axis (R).

11. Gun according to claim 9 or 10, wherein said first (32) and second (34) engagement members protrude from opposite surfaces (44, 46) of the hammer body (36), one of which is located above and the other below a median orthogonal plane of said hammer body with respect to said rotation axis (R).

12. Gun according to claims 9-11, wherein the first joint (32) and the second joint (34) each comprise an element pin extending substantially parallel to the rotation axis (R).

13. Gun according to claims 9-11, wherein said first coupling (32) and/or said second coupling (34) are located in a fan-shaped recess (48) of said hammer (10) angularly delimited by hammer surfaces (50, 52), the rotation of the hammer (10) bringing one of said surfaces into abutment with said elastic means (28) and/or said firing pin (12) to determine the end-of-stroke position of said hammer (10).

14. Gun according to claim 13, wherein said hammer surface (50, 52) extends axially along said rotation axis (R).

15. Gun according to any of the previous claims, wherein the firing pin (12) comprises a needle body (38) connected to the hammer (10) and a needle tip (40) extending distally towards the barrel (4), the needle body (38) and the hammer (10) being connected by means of a cam mechanism.

16. Gun according to claims 9-14 and 15, wherein the needle body (38) delimits a needle groove (42), wherein the second engagement member (34) or second element is partially embedded in the needle groove and wherein the surface delimiting the needle groove (42) constitutes a cam surface for moving the needle tip (40) towards the barrel (4) or for moving the needle tip (40) away from the barrel (4).

17. Gun according to claim 8, wherein the barrel (4) delimits proximally a firing chamber (6) and, in the firing position, the firing pin (12) projects partially into the firing chamber (6), the firing chamber (6) being oriented substantially parallel to the longitudinal direction (X) at each instant of the firing cycle of the gun (1).

18. A gun as claimed in any one of the preceding claims, characterized in that the gun is a semi-automatic or automatic pistol.