EP3901555A1 - Firing pin safety mechanism for a gun - Google Patents

Abstract

The present invention relates to a pistol comprising a firing pin safety device integrated into a slide (5) of the pistol comprising a firing pin (1) comprising a lateral extension (25) comprising at least one safety lug (10,11) and a firing pin safety butterfly (2) arranged on a rotation axis (27) fixed to the slide and parallel to the translation axis of the firing pin (20), said safety butterfly (2) being able to rotate in a vertical plane between a firing position and a locking position, said butterfly (2) comprising at least one bearing surface (17,18) on which (s) the at least one lug (10,11) rest when said throttle is in the blocking position and at least one recess (14) capable of allowing at least one lug (10,11) to pass when said throttle is in firing position, the center of mass of said throttle (2) being on its axis of rotation (27) and the axis of rotation (27) being a main axis of inertia of said butterfly (2).

Description

Object of the invention

The present invention relates to a pistol firing pin safety device.

State of the art

For safety reasons, it is generally necessary in handguns to ensure that the firing pin can only strike a chambered cartridge when the trigger is pulled, even in the event of a fall, breakage or damage. exaggerated wear of the trigger directly controlling the firing pin. This type of safety, called firing pin safety, is generally controlled by a part in translation or in rotation actuated by the control chain. This part is generally held in the safety position by a spring.

The document WO2017 / 080537 describes such a device in which the locking of the firing pin is provided by a rotating part. The drawback of these devices is that the inertia of this locking part can cause it to unlock under the effect of a shock, for example caused by a fall. In fact, depending on the orientation of the fall, the inertia (both in rotation and in translation) can cause the firing pin safety to move and therefore to accidentally deactivate the safety. This phenomenon can also appear simply during firing. However, it is precisely during such falls or during intensive firing that the risk of accidental dropping of the firing pin is high.

An object of the invention is therefore to improve the firing pin locking safety, in particular during accidental falls.

Summary of the invention

A first aspect of the invention relates to a pistol comprising a firing pin safety device integrated into a slide of the pistol comprising a firing pin comprising at least one safety lug and a firing pin safety butterfly arranged on an axis of rotation fixed to slide and parallel to the axis of translation of the firing pin, said safety throttle being able to rotate in a vertical plane between a firing position and a locking position, said throttle comprising at least one bearing surface on which at least rest a lug when said throttle is in the locking position, the center of mass of said throttle being on its axis of rotation and the axis of rotation being a main axis of inertia of said throttle.

• ledit papillon comprend au moins un évidement pouvant laisser passer l'au moins un ergot lorsque ledit papillon est en position de tir ;
• ledit papillon comprend deux surfaces d'appui disposées symétriquement autour de l'axe du papillon et deux évidements symétriques ;
• le percuteur comprend deux ergots disposés de part et d'autre d'une extension latérale du percuteur;
• Le pistolet comprend des moyens élastiques prenant appui sur la glissière et maintenant ledit papillon en position de blocage ;
• la glissière est fixée à une carcasse comprenant une chaine de commande commandée par une queue de détente, ladite chaine de commande actionnant une gâchette de sécurité de percuteur faisant basculer ledit papillon de la position de sécurité à la position de mise à feu lorsque ladite queue de détente est pressée, ladite gâchette de sécurité de percuteur étant disposée sur un axe de gâchette de sécurité de percuteur horizontal perpendiculaire à l'axe du canon et localisé sur un axe principal d'inertie de la gâchette de sécurité de percuteur ;
• la gâchette de sécurité de percuteur et la chaîne de commande sont disposées de façon à ce que la gâchette de sécurité de percuteur soit actionnée avant une gâchette de percuteur libérant le percuteur ;
• l'axe de rotation du papillon est situé dans un plan vertical sous l'axe du percuteur;
• ledit papillon est disposé en fin de course du percuteur, empêchant l'émergence de la tête de percuteur hors d'un fond de culasse intégré à la glissière
• le percuteur comprend une extension latérale qui comporte l'au moins un ergot.

According to preferred embodiments of the invention, the slide comprises one, or an appropriate combination of at least two of the following characteristics:

• said butterfly comprises at least one recess capable of allowing at least one lug to pass when said butterfly is in the firing position;
• said butterfly comprises two bearing surfaces arranged symmetrically around the axis of the butterfly and two symmetrical recesses;
• the striker comprises two lugs arranged on either side of a lateral extension of the striker;
• The gun comprises elastic means bearing on the slide and maintaining said butterfly in the locking position;
• the slide is fixed to a carcass comprising a control chain controlled by a trigger tail, said control chain actuating a firing pin safety trigger causing said butterfly to switch from the safety position to the firing position when said tail of trigger is squeezed, said firing pin safety trigger being disposed on a horizontal firing pin safety trigger axis perpendicular to the axis of the barrel and located on a main axis of inertia of the firing pin safety trigger;
• the firing pin safety trigger and the control chain are arranged so that the firing pin safety trigger is actuated before a firing pin trigger releasing the firing pin;
• the axis of rotation of the butterfly is located in a vertical plane under the axis of the striker;
• said butterfly is placed at the end of the stroke of the firing pin, preventing the emergence of the firing pin head out of a cylinder head base integrated into the slide
• the striker comprises a lateral extension which comprises the at least one lug.

Brief description of the figures

• The figure 1 shows a section of an example of a gun according to the invention.
• The figure 2 shows a top view and side view of a slide of a gun according to the invention.
• The figure 3 shows a perspective view of a pistol firing pin according to the invention.
• The figure 4 shows a perspective view of a firing pin locking safety butterfly.
• The figure 5 shows a rear view of a section of the slide showing the firing pin safety butterfly in the safe position (the firing pin is shown in full).
• The figure 6 shows a rear view of a section of the slide showing the firing pin safety butterfly in firing position (the firing pin is shown in full).

Legend of figures

1. 1.striker
2. 2.firing pin (safety butterfly)
3. 3.firing pin stopper
4. 4.right striker spring
5. 5.zipper
6. 6.left firing pin spring
7. 7.zipper insert
8. 8.extractor claw
9. 9.striker head
10. 10.Left firing pin safety pin
11. 11.Right striker safety pin
12. 12.spring bearing surface
13. 13. firing pin spring housing recess
14. 14. Firing pin safety pin housing recess
15. 15. Recess equivalent to the return spring housing in order to balance the throttle.
16. 16. Return spring housing
17. 17. Right firing pin safety lug bearing surface
18. 18. Support surface of the left firing pin safety pin
19. 19. Firing pin return spring
20. 20. Firing pin
21. 21. Spring support
22. 22. Spring stop surface 4.6
23. 23. Bowl base (or breech base or percussion base)
24. 24. Housing
25. 25. Lateral extension of the striker
26. 26. Firing pin safety control trigger
27. 27. Safety throttle rotation axis
28. 28. Firing pin trigger
29. 29. Firing pin guide channel
30. 30. Striker stopping surface during empty firing
31. 31. Firing pin safety butterfly spring

Detailed description of the invention

The present description essentially describes an example of a weapon implementing all the aspects of the present invention. Those skilled in the art will easily understand that the different aspects of the invention, although they can be used separately, exhibit synergies which will appear clearly in the light of this example and of the few variants described.

In the present description, a solid is said to be balanced during its rotation around a fixed axis if, its center of mass is on the axis of rotation and the axis of rotation is a main axis of inertia for this solid.

According to the invention, the firing pin safety is no longer ensured by a mass in translation or in rotation along any axis, but rather by a firing pin safety butterfly 2 balanced on its axis of rotation 27. As a result, the absence of unbalance on the butterfly 2 ensures that a shock cannot induce its rotation.

To this end, an example of a butterfly is shown in the figure 4 , which has rotational symmetry ensuring perfect balance. This butterfly comprises two support surfaces 17,18 on which two lugs 10,11 fixed to a lateral extension 25 of the striker 1 can bear when the butterfly 2 is in the safety position. The assembly, seen from the rear in the safety position, is shown in the figure 5 .

When the trigger is actuated, a firing pin safety control trigger 26 pushes under the side surface to the right of the throttle 2, so as to rotate it on its axis 27. This rotation has the effect of clearing the surfaces of the throttle. supports 17,18 of the trajectory of the two pins 10,11 of the striker 1, allowing the latter to continue its course until emerging from the percussion base 23. The two pins 10,11 then take place in two housings 14 provided in the butterfly. This arrangement is shown, seen from the rear at the figure 6 .

It is important to note that a single lug 10 or 11 is sufficient to block the striker on one of the surfaces, and that, if the part shown is symmetrical, we would have as well could imagine an asymmetrical part with on one side the aforementioned elements and on the other a simple counterweight correcting the unbalance induced by said elements. However, the use of a striker having a lug on each side makes it possible to balance the forces and reduce the torque induced by the pressing of the striker 1 on the butterfly 2.

The butterfly 2 is advantageously held in the safety position by one or more springs 31, typically a torsion spring bearing on the one hand on one (or two) grooves 15, 16 formed on the lateral parts of the butterfly 2 and on the other part on the slide 5.

Advantageously, the firing pin safety butterfly 2 is controlled by a firing pin safety trigger 26 fixed to the frame (or a frame inserted into the frame) via a horizontal axis perpendicular to the axis of the barrel, this safety control trigger firing pin being also balanced on its axis so as to prevent accidental control of the safety throttle 2.

The trigger safety trigger can either be integrated with the firing pin trigger 28 or be integrated as a separate part (as shown in figure 1 ).

Preferably, the firing control chain actuated by the trigger tail is arranged so as to control the rotation of the firing pin safety butterfly 2 before releasing the firing pin 1. This sequence may be obtained by a greater stroke of firing pin 28, or more advantageously by using a separate firing pin safety trigger 26.

Claims (14)

Pistol comprising a firing pin safety device integrated into a slide (5) of the pistol comprising a firing pin (1) comprising at least one safety lug (10,11) and a firing pin safety butterfly (2) arranged on an axis of rotation (27) integral with the slide and parallel or coaxial with the translation axis of the firing pin (20), said safety butterfly (2) being able to rotate in a vertical plane between a firing position and a locking position, said butterfly (2) comprising at least one bearing surface (17,18) on which (s) rest the at least one lug (10,11) when said butterfly is in the locking position, the center of mass of said butterfly (2) being on its axis of rotation (27). A gun according to claim 1 wherein the axis of rotation (27) of the firing pin safety butterfly (2) is a main axis of inertia of said firing pin safety butterfly (2). Pistol according to claim 1 or 2, in which said safety butterfly valve (2) comprises at least one recess (14) capable of allowing at least one lug (10,11) to pass when said butterfly valve is in the firing position. Gun according to one of the preceding claims, in which said butterfly (2) comprises two bearing surfaces (17,18) arranged symmetrically around the axis (27) of the butterfly (2) and two symmetrical recesses (14). Gun according to Claim 4, in which the firing pin (1) comprises two lugs (10, 11) arranged on either side of a lateral extension (25) of the firing pin. Gun according to one of the preceding claims comprising elastic means (31) bearing on the slide and maintaining said butterfly (2) in the locking position. Gun according to one of the preceding claims in which the slide is fixed to a carcass or a frame comprising a control chain controlled by a trigger tail, said control chain actuating a firing pin safety trigger (30) causing said butterfly to tilt. (2) from the safety position to the firing position when said trigger tail is squeezed, said firing pin safety trigger (30) being disposed on a horizontal firing pin safety trigger axis perpendicular to the axis of the firing pin. barrel and passing through the center of mass of the firing pin safety trigger (30). A gun according to claim 7 in which the firing pin safety trigger (30) and the control chain are arranged so that the trigger firing pin safety device (30) is actuated before a firing pin trigger (28) releasing the firing pin (1). Gun according to one of the preceding claims, in which said axis of rotation (27) of the butterfly (2) is located in a vertical plane below the axis of the firing pin (20). Pistol according to one of the preceding claims wherein said butterfly is disposed at the end of the stroke of the firing pin (1), preventing the emergence of the firing pin head (9) out of a breech base (23) integrated into the slide (5). Gun according to one of the preceding claims, in which the striker (1) comprises a lateral extension (25) which comprises at least one lug (10,11). Gun according to one of the preceding claims, in which the firing pin safety trigger (26) is integral with a firing pin trigger (28) controlling the release of the firing pin. Gun according to one of the preceding claims, in which the firing pin safety control trigger (26) is arranged so as to resume its safety position before the rearming of the firing pin (1). (it would take an explanatory paragraph on how this is achieved, I guess it is unhooked at the same time as the firing pin trigger itself). Pistol according to one of the preceding claims, in which the firing pin safety butterfly (2) comprises a firing pin stop surface (30) enabling the firing pin to be stopped when no cartridge is chambered.

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