Firing pin safety of a pistol

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 butterfly safety (2) positioned on an axis of rotation (27) fastened to the slide and parallel to the axis of translation of the firing pin (20), said butterfly safety (2) being able to rotate in a vertical plane between a firing position and a blocking position, said butterfly (2) comprising at least one bearing surface (17,18) on which the at least one lug (10,11) rests when said butterfly is in the blocking position and at least one recess (14) able to allow the at least one lug (10,11) to pass when said butterfly is in the shooting position, the center of mass of said butterfly (2) being on its axis of rotation (27) and the axis of rotation (27) being a main axis of inertia of said butterfly (2).

Claims

1. 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 butterfly safety positioned on an axis of rotation secured to the slide and parallel to the axis of translation of the firing pin, said butterfly safety being able to rotate in a vertical plane between a firing position and a blocking position, said butterfly comprising at least one bearing surface on which the at least one lug rests when said butterfly is in the blocking position, the center of mass of said butterfly being on its axis of rotation wherein said safety butterfly comprises at least one recess able to allow the at least one lug to pass when said butterfly is in the shooting position.

2. The pistol according to claim 1, wherein the axis of rotation of the firing pin safety butterfly is a main axis of inertia of said firing pin safety butterfly.

3. The pistol according to claim 1, wherein said butterfly comprises two bearing surfaces positioned symmetrically about the axis of the butterfly and two symmetrical recesses.

4. The pistol according to claim 3, wherein the firing pin comprises two lugs positioned on either side of a lateral extension of the firing pin.

5. The pistol according to claim 1, comprising resilient means bearing on the slide and keeping said butterfly in the blocking position.

6. The pistol according to claim 1, wherein the slide is fastened to a frame or a chassis comprising a control chain controlled by a trigger, said control chain actuating a firing pin safety trigger tail causing said butterfly to switch from the safety position to the firing position when said trigger is pressed, said firing pin safety trigger tail being positioned on a horizontal firing pin safety trigger tail axis which is perpendicular to the axis of the barrel and passing through the center of mass of the firing pin safety trigger tail.

7. The pistol according to claim 6, wherein the firing pin safety trigger tail and the control chain are positioned such that the firing pin safety trigger tail is actuated before a firing pin trigger tail releasing the firing pin.

8. The pistol according to claim 1, wherein said axis of rotation of the butterfly is located in a vertical plane below the axis of the firing pin.

9. The pistol according to claim 1, wherein said butterfly is positioned at the end of travel of the firing pin, preventing the firing pin head from emerging from a breech face integrated into the slide.

10. The pistol according to claim 1, wherein the firing pin comprises a lateral extension which includes the at least one lug.

11. The pistol according to claim 1, wherein the firing pin safety trigger tail is secured to a firing pin trigger tail controlling the release of the firing pin.

12. The pistol according to claim 1, wherein the firing pin safety butterfly comprises a firing pin stop surface making it possible to stop the firing pin when no cartridge is chambered.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) FIG. 1 shows a sectional view of an example pistol according to the invention.

(2) FIG. 2 shows a sectional top view and side view of a slide of a pistol according to the invention.

(3) FIG. 3 shows a perspective view of a pistol firing pin according to the invention.

(4) FIG. 4 shows a perspective view of a firing pin blocking safety butterfly.

(5) FIG. 5 shows a rear view of a section of the slide showing the firing pin safety butterfly in the safety position (the firing pin is shown in its entirety).

(6) FIG. 6 shows a rear view of a section of the slide showing the firing pin safety butterfly in the shooting position (the firing pin is shown in its entirety).

LEGEND OF THE FIGURES

(7) 1. Firing pin

(8) 2. Firing pin lock (safety butterfly)

(9) 3. Firing pin stop

(10) 4. Right firing pin spring

(11) 5. Slide

(12) 6. Left firing pin spring

(13) 7. Slide insert

(14) 8. Extractor prong

(15) 9. Firing pin head

(16) 10. Left firing pin safety lug

(17) 11. Right firing pin safety lug

(18) 12. Spring bearing surface

(19) 13. Firing pin spring housing recess

(20) 14. Firing pin safety lug housing recess

(21) 15. Recess equivalent to the return spring housing in order to balance the butterfly

(22) 16. Return spring housing

(23) 17. Bearing surface of the right firing pin safety lug

(24) 18. Bearing surface of the left firing pin safety lug

(25) 19. Return spring of the firing pin

(26) 20. Firing pin axis

(27) 21. Spring support

(28) 22. Stop surface of the springs 4,6

(29) 23. Cartridge headspace bottom (or breech bottom or breech face)

(30) 24. Case

(31) 25. Lateral extension of the firing pin

(32) 26. Firing pin safety control trigger tail

(33) 27. Axis of rotation of the safety butterfly

(34) 28. Firing pin trigger tail

(35) 29. Guide channel of the firing pin

(36) 30. Firing pin stop surface during dry fire

(37) 31. Firing pin safety butterfly spring

DETAILED DESCRIPTION OF THE INVENTION

(38) The present description essentially describes an example weapon implementing all of the aspects of the present invention. The person skilled in the art will easily understand that the various aspects of the invention, although usable separately, have synergies that will appear clearly in light of this example and of several described variants.

(39) In the present description, a solid is said to be balanced when it rotates about 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.

(40) According to the invention, the firing pin safety is no longer ensured by a mass in translation or in rotation along any axis, but by a firing pin safety butterfly 2 which is balanced on its axis of rotation 27. As a result, the absence of unbalance on the butterfly 2 ensures that an impact cannot cause it to rotate.

(41) To this end, an example butterfly is shown in FIG. 4, which has a symmetry of rotation ensuring perfect balance. This butterfly comprises two bearing surfaces 17,18 on which two lugs 10,11 fastened on a lateral extension 25 of the firing pin 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 FIG. 5.

(42) When the trigger is actuated, a firing pin safety control trigger tail 26 pushes below the right lateral surface of the butterfly 2, so as to cause it to rotate on its axis 27. This rotation results in freeing the bearing surfaces 17,18 from the trajectory of the two lugs 10,11 of the firing pin 11, allowing the latter to continue its travel until it emerges from the breech face 23. The two lugs 10,11 are then placed in two housings 14 arranged in the butterfly. This positioning is shown, from the rear, in FIG. 6.

(43) It is important to note that a single lug 10 or 11 suffices to block the firing pin on one of the surfaces, and that, while the illustrated part is symmetrical, it would also have been possible to imagine an asymmetrical part with the aforementioned elements on one side and a simple counterweight on the other side correcting the unbalance caused by said elements. Nevertheless, the use of a firing pin having a lug on each side makes it possible to balance the forces and to reduce the torque caused by the bearing of the firing pin 1 on the butterfly 2.

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

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

(46) The release safety trigger can either be integrated into the firing pin release trigger 28, or be integrated into a separate part (as shown in FIG. 1).

(47) Preferably, the shooting control chain actuated by the trigger is positioned so as to control the rotation of the firing pin safety butterfly 2 before releasing the firing pin 1. This sequence can either be obtained by a greater travel of the firing pin trigger tail 28, or more advantageously by using a separate firing pin safety trigger tail 26.