EP0634621B1 - Firing mechanism for fire arms - Google Patents

Abstract

Firing mechanism for firearms, this mechanism comprising a hammer (5) pivoting between a "cocked" position and a "dropped" position in contact with the striker (4), a sear (8) capable of retaining the hammer (5) in the cocked position, an actual trigger (13) controlling the sear (8), means (20) for causing the hammer (5) to pivot from its cocked position towards the striker (4) of the firearm when this hammer (5) is released by the sear (8), and a safety device comprising a manually engageable locking element (27) capable of blocking the trigger (13), characterised in that, in the safety position, the locking element (27) cooperates not only with the trigger (13), but simultaneously with the means (20) for causing this hammer to pivot, in order to prevent the hammer (5) from knocking against the striker (4) as long as the locking element (27) is in its abovementioned position. <IMAGE>

Description

The invention relates to a firing mechanism for weapons fire, this mechanism comprising a dog swiveling between a "armed" position and a "fallen" position in contact with the striker, a trigger that can hold the dog in armed position, a trigger itself commanding the trigger, means for rotating the dog from from its armed position towards the striker of the weapon when this dog is released by the trigger and a device security including a lockable lock element manually, which can block the trigger and the armed dog.

Such a fire mechanism is described in EP-A-0.428.292. This mechanism includes a lock element can pivot about its axis which is parallel to the axis of rotation of the dog. In its safety position, this latch element acts directly on the dog, preventing its rotation, and at the same time blocks the separator connecting trigger trigger, thereby indirectly preventing movement of the trigger.

Unintentional trigger rotation or rotation involuntary dog in case of trigger failure or the part of the dog cooperating with the trigger is thus excluded when the lock element is in position security.

The pivoting safety element cannot, however, be put in the safety position only when the dog is armed, arming the dog being impossible when the element of lock is in the latter position.

After arming the dog, it can strike unintentionally the striker as long as the latch member has not been rotated to the safety position.

The object of the invention is to overcome this drawback and to provide a firing mechanism with safety extra safely preventing that the dog comes into contact with the striker as long as the device is engaged.

According to the invention, this object is achieved by the fact that the lock element, in the safety position, cooperates not only with relaxation, but simultaneously with means for rotating the dog, these means comprising a control element, one end of which is fixed swivel to the dog at a distance from its axis of pivoting, this control element being provided with a part which is retained by part of the element of lock when the latter is in the safety position and that the dog is armed, the lock element allowing both in safety position and in firing position the passage, during the arming of the dog, of the above-mentioned part of the control element to its position where it is retained by the lock element, the part of the control element not preventing passage of the latch member from its fire position to its safety position and vice versa when held by the latch member.

In a particular embodiment of the invention, the latch member is movable in one direction parallel to the pivot axis of the dog and includes a part cooperating in the safety position with the trigger and another party cooperating in the same position with the means to rotate the dog.

The control element may be a connecting rod, the means for rotate the dog including a push button the end of the rod away from the dog. The part that is retained from the control element is preferably a hook.

la figure 1 représente un fusil dans lequel est incorporé un mécanisme de mise à feu selon l'invention;

la figure 2 représente en coupe longitudinale la partie indiquée par F2 à la figure 1, partie généralement appelée "sous-garde", à une échelle plus grande et avec le mécanisme de mise à feu en position armée;

la figure 3 représente une coupe selon la ligne III-III de la figure 2;

la figure 4 représente une vue en perspective de la partie du fusil représentée à la figure 2;

la figure 5 représente une coupe semblable à celle de la figure 2, mais avec le mécanisme de mise à feu en position de détente et le chien donc en position tombée;

la figure 6 représente une coupe selon la ligne VI-VI de la figure 5;

la figure 7 représente une coupe semblable à celles des figures 2 et 6, mais dans le cas où par accident la gâchette ne retient plus le chien en position armée tandis que le dispositif de sécurité demeure en position de sécurité;

la figure 8 représente une coupe selon la ligne XIII-XIII de la figure 7.

In order to better highlight the characteristics of the invention, a preferred embodiment is given below by way of example, without any limiting character, with reference to the appended drawings, in which:

Figure 1 shows a rifle in which is incorporated a firing mechanism according to the invention;

2 shows in longitudinal section the part indicated by F2 in FIG. 1, part generally called "sub-guard", on a larger scale and with the firing mechanism in the armed position;

Figure 3 shows a section along line III-III of Figure 2;

Figure 4 shows a perspective view of the part of the rifle shown in Figure 2;

5 shows a section similar to that of Figure 2, but with the firing mechanism in the relaxed position and the dog therefore in the fallen position;

Figure 6 shows a section along line VI-VI of Figure 5;

7 shows a section similar to those of Figures 2 and 6, but in the case where by accident the trigger no longer retains the dog in the armed position while the safety device remains in the safety position;

FIG. 8 represents a section along the line XIII-XIII of FIG. 7.

The rifle according to Figure 1 comprises, in known manner, a carcass 1 with the sub-guard 1 ', a stock 2 mounted at a end on the carcass, a barrel 3, mounted at the other end of the carcass 1 and, inside the carcass 1, a striker 4 (see Figure 5), an arming mechanism and a firing mechanism.

The firing mechanism also includes known, a dog 5 pivotally mounted on the sub-guard 1 'around a transverse axis 6 between a so-called "armed" position as shown in Figures 2 and 4, and a so-called "fallen" position, shown at FIG. 5, in which the dog 5 strikes the striker 4. This striker 4 is located in front, that is to say on the side of the barrel 3, relative to the dog 5, in the fallen position. The part of the dog 5 distant from the axis 6 is folded towards the rear seen in this position and forms at the end a spout 7.

The firing device also includes a trigger 8 L-shaped, pivotally mounted in the sub-guard 1 'using an axis 9 and capable of retaining the dog 5 in its armed position. This trigger 8 is retained in its armed position, i.e. the position shown in Figure 2 in which it retains the dog 5, using a tension spring 10 surrounding axis 9 and leaning on the one hand against part 11 of the sub-guard 1 'and inserted on the other hand into a hole 12 provided in the trigger 8.

A trigger 13 is mounted so pivoting in the sub-guard 1 'using an axis 14 and controls the trigger via a separator 15.

The separator 15 is rotatably mounted between the two legs from the upper fork end of the trigger 13 using an axis 16. The axes 9, 14 and 16 are parallel to the axis 6 of the dog 5. A spring 17 fixed with a part to a support 18 integral with the sub-guard 1 'and on the other hand to the separator 15, at a distance from the axis 16, pulls the lever and therefore the upper end of the trigger 13 backwards, that is to say in the position normal shown in Figures 2 and 4.

The separator 15 is prevented from pivoting under the action of the spring 17 because its front end is taken below one end folded back towards the back of an arm trigger 8.

This end is provided at the rear with a notch 19 in which the beak 7 of the dog 5 hooks in the armed position.

The firing mechanism also includes means 20 to rotate dog 5 as soon as it is no longer retained by the trigger 8, these means 20 comprising a connecting rod dog 21, extending between the fork arms of the trigger 13 and fixed by its front end so swivel to the dog 5 using an axis 22 parallel to, but located at a distance from, the axis 6, and a pusher 23 pushed forward by a spring 24, acting on the end rear of the connecting rod 21 and mounted in a recess 25 in the sub-guard 1 '.

One of the characteristics of the invention is that the end rear of the connecting rod 21 forms a hook 26.

The firing mechanism further includes a device manual security which basically consists of a latch element 27, housed in a transverse opening in sub-guard 1 'and therefore extending parallel to the axes 6, 9, 14 and 16.

It is also characteristic that this lock element 27 does not include only a cooperating part 28, in safety position, directly with trigger 13 for prevent it from being operated, but also part 29, cooperating in this position with the hook 26 of the connecting rod 21 to retain the latter. Lock element 27 can be moved from the safety position, such as represented in FIGS. 7 and 8 in the so-called firing position, as shown in Figures 2 to 6, by sliding along its longitudinal axis, using a button 30 formed at one end and protruding outside the sub-guard 1 ', on the right or left side depending on the choice of weapon user, element symmetry lock making it reversible.

Part 28 has a triangle-shaped section with the point down. Part 29 adjacent to the same section but with a notch in the top two corners of in this way to form a stop notch in which the hook 26 of the connecting rod 21 is hooked in the armed position of dog 5 and safety position of the lock element 27. This stop notch intended to receive the hook 26 is flanked on either side of part of the element of latch 27 protruding from the stopper of so that when the hook 26 is engaged in this notch stop, changing the position of the lock element 27 is prevented by the presence of the hook 26. Between the parts 28 and 29 on the one hand and the button 30 on the other hand, the lock element 27 comprises a section portion 31 triangular but smaller than that of part 28.

The firing mechanism works as follows:
The arming of the dog 5 is done in a known manner. In the armed position, the dog 5 is hung with its beak 7 in the notch 19 of the trigger 8. The latter also retains the separator 15 in the position shown in FIG. 2. The connecting rod 21 then pushes the pusher 23 against spring 24.

When the lock element 27 is in the safety position, the part 28 is in contact with the trigger 13 and prevents any movement of it. At the same time, the hook 26 of the connecting rod 21 is located behind and in front of the catch of part 29. The arming of the dog 5 can take place while the latch member 27 is in the position of security. For this purpose, during the rear movement of the connecting rod 21, the oblique face 33 of the hook 26 forces the part rear of the connecting rod 21, including the hook 26, to pass above the upper face 32 of the lock element 27. In doing so, the support of the connecting rod 21 slides obliquely on the face 34 of the pusher 23. Once the hook 26 of the connecting rod 21 passed behind the stopper of part 29 of the lock element 27, the action of the spring 24 combined at the obliquity of the face 34 of the pusher 23 causes the rear part of the connecting rod 21, including the hook 26, in a position where the hook 26 is facing the notch stopping part 29 of the latch element 27. A once armed, dog 5 is therefore put in safety until that the lock element 27 is moved to the position of shoot.

After having unlocked the lock element 27 and therefore put it in the firing position, which is done in pushing button 30 and moving the element of latch 27 up to the position of FIG. 3, the trigger mechanism is then in the position as as shown in Figures 2 to 4. Dog 5 remains hooked to trigger 8 and nothing happens but the trigger 13 can be pulled backwards since it opposite the smaller part 31 of the element latch 27 and the connecting rod 21 is no longer retained by the element lock 27 because it is above this part 31 and therefore next to the stopper of part 29.

When the trigger 13 is pulled back, the separator 15 is pushed forward and switches the trigger 8 to forward against the spring 10. The dog 5 is thus released and, since the hook 26 of the connecting rod 21 does not meets no obstacle, it pivots to position fallen and struck the striker 4 as shown in Figures 5 and 6.

In Figures 7 and 8, the latch member 27 is shown in safety position. As already explained, the trigger 13 is then blocked and the hook 26 of the connecting rod 21 is located opposite part 29 of the lock element 27. If for any reason, for example a pivot unintentional trigger 8 triggered by shock or mechanical failure such as the breaking of the dog 5 or the trigger 8, trigger 8 no longer holds the dog 5, this the latter is however prevented by the connecting rod 21 from striking the striker 4, this connecting rod 21 forming a safety additional and remaining attached to the lock element 27.

Due to the fact that the hook 26 of the connecting rod 21 is in one of the notches forming a stopper of part 29 of the lock element 27, it is also impossible to make pass the latch member 27 into the firing position. We have to first reset the dog 5. If after this rearming, you can passing the latch element 27 into the firing position, is that the untimely stalling of dog 5 was due to shock and not mechanical failure and the weapon can be used normally.

If, on the other hand, after rearming dog 5, you do not arrive still not to pass the lock element 27 in firing position, there is a failure mechanical which requires, to be repaired, to remove the whole sub-guard of the weapon. The weapon is therefore inoperative as this repair has not been made.

The firing mechanism described above has a increased safety and prevents dog 5 from hitting the striker 4 even in the event of an impact or failure mechanical, when the latch element 27 is in position of security.

Dog 5 can move from the "fallen" position to the "armed" position whatever the security position, that is to say the latch element 27 ("firing" position or "safety" position).

Safety can be engaged in "fire" or "safety" position whatever the position of the dog 5 ("fell" or "army"), unless, following a mechanical failure, the hook 26 is kept in contact with the part 29 of the lock element 27.

It is obvious that many modifications can be made to the example described above, without however leaving the part of the invention.

In particular, the shape of the lock element is not given as an example. Other forms are possible provided that in a safe position, a party can prevent the movement of the trigger, while simultaneously another party can hold the connecting rod dog or any other means to rotate the dog when released by the trigger.

The connection between the trigger and the trigger must not necessarily consist of a separator. Indeed, the trigger can be an element or part of the relaxation.

Claims (8)

1. Firing mechanism for fire arms, comprising a hammer (5) pivoting between a "cocked" position and a "tumbled" position in contact with the striker (4), a tumbler (8) which can retain the hammer (5) in the cocked postion, an actual trigger (13) which controls the tumbler (8), means (20) for having the hammer (5) pivoted from its cocked position towards the striker (4) of the weapon when the hammer (5) is released by the tumbler (8), and a safety device containing a locking element (27) which can be locked manually and which can block the trigger (13) and the cocked hammer (5), characterized in that the locking element (27), in safety position, not only cooperates with the trigger (13), but simultaneously with the means (20) for pivoting this hammer (5), whereby these means comprise an actuation element (21), one extremity of which is fixed pivotable to the hammer (5) at a distance to its pivoting axis (6), whereby this actuation element (21) is provided with a part (26) which is retained by a part (29) of the locking element (27) when this latter is in safety position and the hammer (5) is cocked, whereby the locking element (27), in safety position as well as in firing position, during cocking of the hammer (5), allows the transition of the above-said part (26) of the actuation element (21) into its position in which it is retained by the locking element (27), whereby the part (26) of the actuation element (21) does not prevent the transition of this locking element (27) from its firing position into its safety position and reverse, while it is retained by the locking element (27).
2. Mechanism according to claim 1, characterized in that the locking element (27) is movable in a direction parallel to the pivoting axis (6) of the hammer (5) and comprises a part (28) which, in safety position, cooperates with the trigger (13), and another part (29) cooperating in the same position with the means (20) for pivoting the hammer (5).
3. Mechanism according to claim 1 or 2, characterized in that the actuation element (21) of the means (20) for pivoting the hammer (5) is a rod, whereby these means (20), amongst others, comprise a pushing element (23) pushing upon the extremity of the rod (21) which is located away from the hammer (5).
4. Mechanism according to any of the preceding claims, characterized in that the portion (26) of the actuation element (21) cooperating with the locking element (27) is a hook.
5. Mechanism according to claims 3 and 4, characterized in that the part (29) of the locking element (27) cooperating with the hook (26) of the rod (21) has such a shape that, when the hook (26) is engaged by this part, it is impossible to move the locking element (27) out of the safety position.
6. Mechanism according to any of the claims 4 and 5, characterized in that the part (29) of the locking element (27) cooperating with the hook (26) of the rod (21), comprises a part in the shape of a detent portion in which the hook (26) can engage.
7. Mechanism according to any of the preceding claims, characterized in that the part (28) of the locking element (27) cooperating with the trigger (13) has a triangular or similar cross-section.
8. Mechanism according to any of the preceding claims, characterized in that the trigger (13) actuates the tumbler (8) by means of a separating lever (15) fixed with one end in a pivotable manner to the trigger (13) and with its other end coming into contact with an extremity of the tumbler (8) in the active position in which it retains the hammer (5), whereby the movement of the separating lever (15), following the movement of the trigger (13), causes the tumbler (8) to pivot against a spring (10) into a position in which it releases the hammer (5).

Images