EP1119736A1

EP1119736A1 - Trigger device

Info

Publication number: EP1119736A1
Application number: EP99952536A
Authority: EP
Inventors: Manfred Gühring; Rudi Beckmann
Original assignee: Heckler und Koch GmbH
Current assignee: Heckler und Koch GmbH
Priority date: 1998-10-09
Filing date: 1999-10-07
Publication date: 2001-08-01
Anticipated expiration: 2019-10-07
Also published as: US6640479B2; DE59905494D1; ES2193753T3; EP1119736B1; US20010054246A1; CA2347422C; DE19846657C2; ATE239895T1; CA2347422A1; ZA996334B; WO2000022367A1; DE19846657A1

Abstract

A hammer release apparatus for a hand held firearm which reduces the force required to discharge the firearm is disclosed which includes a hammer, a pivotably mounted trigger, and a restraining lever. The restraining lever engages the cocked hammer which is biased towards a firing position by a hammer spring. The restraining lever counteracts the force of the hammer spring to reduce the pull resistance associated with the trigger of the firearm.

Description

Teeing facility

description

The invention relates to an advance arrangement for a firearm, with a firing pin, which via a Schlagweg is composed of a tensioning position by the action of a striking spring away into a rest position movable to there to cause the ignition of a cartridge, and that in the clamping position by a trigger mechanism festhal ^' tbar or can be released after its operation.

The striking piece is about a firing pin or a cock which is loaded by a striking spring and has a stud which in the tensioned position has a trigger directly or via a rod. In the limit, the two surfaces of the stud and trigger or rod pressed together by the load of the striking spring are perpendicular to the direction of movement of the striking piece and thus to the direction of action of the force of the striking spring, so that only the frictional force to be overcome to release the striking piece Studs and trigger or rod is effective. In fact, for safety reasons, it is necessary to position the above-mentioned, pressed surfaces a little against the direction of movement of the striking piece, so that the striking piece is released in addition to the frictional force, a component of the force of the striking spring has to be overcome (see DE 196 26 077 AI).

-> - If a shooter actuates the trigger of the handgun, then in addition to this release force (friction force + component of the impact spring force), he must also overcome the spring forces that hold the trigger in its rest position, as well as the low frictional forces, the trigger and, if applicable Pole are exposed when he wants to fire a shot.

With a high-performance sport weapon, all these forces can be minimized, since such a weapon is only loaded on the shooting range immediately before the shot and is handled with extreme care; With a military weapon, on the other hand, one must take into account that it can fall to the ground in a ready-to-fire state, that the shooter wears thick gloves, or other circumstances that require it, far beyond the still achievable limits of the spring forces and the inclination of the engagement Surface of studs and trigger to stay in the direction of the force of the striking spring. If, for example, a weapon falls down a slope, it will hit the ground with increasing speed and at various angles and trigger mass forces in the trigger or in the rod, which must be successfully counteracted by the corresponding spring if you want to prevent it in such circumstances a shot will fire. Military and police weapons are therefore inevitably tougher than sport weapons.

Utility weapons for hunting, military shooting, self-defense and leisure activities have deductions, the operating force of which for firing a shot lies between the above extremes, because such weapons are generally handled with care, but are subject to certain loads. If one disregards optional, additional devices to make it easier to pull off (engraver), such weapons have fume cupboards, the actuation force of which, when using a pistol grip, should be between 15 and 20 Newtons when firing a shot, and which are a skilled shooter of utility weapons perceived as pleasant and soft (military pistols can have a so-called "trigger weight" of up to 50 Newtons, sports pistols with mechanical release down to about 0.3 Newtons).

Now you cannot reduce the trigger weight of a military weapon, for example, if you want to produce a civilian version of this military weapon that is intended for reservist sport and hobby, because the spring forces and the angle of attack of the contact surface between the stud and the trigger or rod are as described above , cannot be optimized beyond a limit for security reasons. It is possible to reduce the frictional forces that occur by polishing the bearing points and the engagement surface, but it is complex and otherwise prone to failure: even slight contamination, for example by flying sand, virtually completely eliminates any improvement achieved by polishing.

The installation of intermediate links, transmission levers etc. between the trigger and the striker is often difficult to implement due to space and cost reasons.

The invention is therefore based on the object to reduce the trigger weight of a handgun with simple and inexpensive means. In particular, the trigger weight of the sport version of a military rifle should be reduced, the construction of the military version being used without additional precision revision, but without the safety of the rifle suffering.

The achievable improvement in the trigger weight should preferably be able to be canceled by actuating a handle or the like, so that it is possible for reservists to use their Train the rifle in conditions that are as close as possible to those that are present in a military rifle.

This object is achieved in that an inhibiting device is provided which is set up to apply an inhibiting force to the striking element only in its tensioned position, which is opposed to the force of the striking spring and is smaller than this (claim 1).

In the tensioned position, the striking piece is no longer supported solely on the trigger gallery, but also on the inhibiting device, so that less force is absorbed by the trigger gallery and accordingly the frictional forces on it that have to be overcome by the trigger are reduced. However, once the trigger has been pulled off, the spring force of the striking spring overcomes that of the retarding device, which then becomes ineffective in the course of the striking movement of the striking piece, because the retarding device is only effective in the tensioned position. The inhibiting device thus reduces the impact of the striking piece at most insignificantly.

The inhibitor could be, for example, a rest, which acts on the striker in the tensioned position and must be overcome by the striker in its movement in any direction. However, in order not to increase the forces required to tension the striking piece, which could possibly lead to malfunctions in the case of a self-loading weapon, the invention further proposes that the inhibiting device be designed such that it is ineffective when the striking piece is in its resting position from its rest position is moved (claim 2).

For this purpose, the inhibiting device could be pressed by the striker in a detent when the striker is triggered, which is only lifted by the striker again when it is fully tensioned again. According to the invention, however, it is preferred that the inhibiting device is designed as a directional lock (claim 3), which intervenes effectively when the striking piece is knocked off, but is simply overrun by the striking piece when the striking piece is tensioned.

A handgun of the type mentioned at the outset generally has a safety device which fixes the striker directly or indirectly via the trigger or the rod. Fuses of the latter type must have good, force-transmitting engagement between the stud of the striking piece and the trigger or the rod. For this reason, it is proposed in a preferred embodiment of the invention to render the inhibiting device ineffective when securing (claim 4), so that in the case of the secured weapon the entire force of the striking spring is introduced into the securing device via the stud and the trigger and / or the rod and thus the seat of the gallery is improved so that the same conditions are present as with a construction-like military weapon, in which the effectiveness of the safety device has been tested in many and lengthy tests (drop tests, etc.), so that such a version for the civilian version search series superfluous.

However, it can also be advantageous to switch off the inhibiting device entirely (claim 5), so that the same force must be applied to the trigger as is present with a military weapon. This can be useful for reservist exercises, or for a hunting weapon, if the hunter does not want to secure the weapon when overcoming difficult terrain, but wants to avoid that the rifle can be pulled off by branches, for example, when crossing a bush.

It is fundamentally possible to form an additional depression or notch on the striking piece, in which the inhibiting device engages. In the civil version of a mi The weapon intended for the military weapon, in which only the notch has been introduced, can then be used.

However, it is more advantageous (claim 6) to form an additional, protruding projection on the striking piece which, although it can also be retrofitted to the standard striking piece, is preferably formed in one piece with it. The inhibitor then does not engage any other portion of the striker other than the protrusion. Furthermore, the striking piece could be the firing pin of a firing pin lock, but is preferably the tap of a cock lock.

The inhibitor could be designed as a spring-loaded detent ball, which could even be inserted into the tap itself, but is preferably designed as a detent finger (claim 7), which is in the tensioned position from outside the stroke path, which is traversed by the tap and its projection of the tap against the projection, so that it counteracts the action of the striking spring. The critical areas of the firing device of a military weapon can thus remain unchanged, since the locking finger, and in relation to this the projection of the cock, can be positioned in such a way that a free space along the stroke path of the cock can be used in the present firing device. Likewise, the projection on the tap does not have to be arranged in the center, but can be on the side, where the inhibitor finger can easily be accommodated.

The restraining finger can be loaded in its longitudinal direction by the restraining spring and can be pressed against the tap; however, the escapement finger is preferably designed as a swivel lever which is pivotally mounted at one end remote from the firing pin and at the other end from the escapement spring for engagement with the projection of the tap is loaded (claim 8). Such training is particularly pollution-proof.

According to a further preferred embodiment, the end of the pivot lever engaging with the projection is designed as a spring-loaded pawl which engages behind the projection in the tensioned position of the valve and is supported on it; However, if the tap and thus the projection is moved in the clamping direction, it runs freely past the pawls because it folds away against the force of a weak spring in front of the incoming projection.

A cock lock, for example for a military rifle, has a transverse safety shaft, on the two ends of which, on the outside of the handle, there is an actuating lever by means of which the safety shaft can be pivoted. This safety shaft has a projection or a depression which can come into engagement with an extension of the trigger in order to allow the trigger to move freely or to fix it. The locking shaft is fixed in each of its positions by a catch. The safety shaft can also have further resting positions, for example for continuous fire and continuous fire with a limited number of shots.

According to a further embodiment of the invention, this locking shaft also has a circumferential cam configuration for the pivot lever, which is pressed against it by the restraining spring, so that the pivot lever in the

Position in which the striking or triggering device is secured is lifted out of engagement with the projection of the striking element, the above-mentioned advantages being achieved.

A further rotational position of the safety shaft can also be provided, which in the case of a civilian weapon without the possibility of continuous fire is the third position in which the pivot lever is disengaged from the projection of the handle. nes is raised, although the strike or trigger device is unsecured, so that the trigger receives the trigger weight of the corresponding military weapon, ie a trigger weight that is not reduced by the effectiveness of the inhibiting device.

The subject matter of the invention is explained in more detail, for example, with the aid of the accompanying drawing, the single figure of which shows a longitudinal section through part of a grip piece for a rifle; the tee device and a trigger device are shown in this handle. The handle shown shows to the left, which is hereinafter referred to as "front".

The entire trigger device of this military-type rifle is described in detail in the published German patent application 196 26 077.9 of the applicant of the present patent application; the disclosure of this published patent application is expressly incorporated into the present disclosure.

The present trigger and knock-off device corresponds to the above-mentioned known trigger device, but the continuous fire mode has been omitted.

In the present drawing, the same reference numerals have been used for all parts which correspond to those of the known trigger device. All three-digit reference numerals relate to parts that are new compared to the known trigger device.

The trigger and knock-off device 5 is accommodated in a handle 1 which has a handle 3. Deviate from the known military version

Handle 1 and handle 3 are not designed as a separate component, but are incorporated into a rear rifle stock part made of plastic, which forms a structural unit. A tap 13 is rotatably mounted on a tap shaft 21 and has a locking lug 19 which, in the tensioned position, can be brought into engagement with a counter lug 47 which is assigned to a trigger 33 which is pivotably mounted about a trigger axis 35. A spring (not shown) is assigned to the cock 13 and the trigger 33, each loading the cock 13 (impact spring) and the trigger 33 (return spring) in the direction of a rest position; both springs are shown in the aforementioned, previously published patent application, the representation of which is referred to here.

Above the trigger axis 33 is pivotable with an elongated hole 45 and in the direction of extension of the elongated hole and limited longitudinally by this a trigger lever 43 is attached, which has the counter-lug 47 at the front end (seen in the weft direction), is pressed forward by a trigger spring 53 and has two operating positions can take: in the operating position shown, the ready-to-fire position, the rear end 49 of the trigger lever 43 lies above the rear end of the trigger 33, which forms an engagement lug 39, the trigger 33 being released and being in the front position. In the second operating position, the trigger 33 is pulled, that is to say it is in the rear position, and the trigger lever 43 is pressed forward by the trigger spring 53 and rests against the circumference of the cock 13 with the counter-lug 47, while the rear one End 49 immersed in a recess 41 which is formed on the top of the trigger 33 and is limited to the rear by the engagement lug 39.

If the trigger 33 is pulled in the ready-to-fire position of the figure, i.e. pulled backwards, the engaging nose 39 lifts the rear end 53 of the trigger lever 43 upwards, whereby it is pivoted about the trigger axis 35 and dips downward with the counter-stud 47 so that this releases the locking studs 19 - the Tap 13 knocks off. At the same time, the trigger spring 53 pushes the trigger lever 43 forward, because the locking lug 19 no longer acts on its front end, and the trigger lever 43 falls into the recess 41 with its rear end 49, namely until the counter lug 49 counteracts the circumference of the tap 13 is applied.

After the shot is triggered, the cock 13 is tensioned again by the retracting breech, not shown here, the latching stud 19 moves forward over the counter-stud 47 and the tap reverses its movement after reaching a dead center until the latching stud 19 comes into engagement with the counter lug 47 and the tap 13 is held shortly before its clamping position. If the trigger is now released, it snaps forward and its engaging nose 31 dips down behind the rear end 49 of the trigger lever 43. Now the trigger lever 43 is pushed a little backwards by the locking stud 19 until it has reached its rear end position, which is shown in the figure. Now the cock 13 is again in its clamping position.

Behind and above the engaging nose 39 there is a locking shaft 55 which penetrates the handle 1 transversely and which can assume different (here two) rotational positions and is held there by means of a catch (catch spring 69). An integrated safety extension (not shown in the drawing) is formed on the back of the trigger 33 and laterally offset from the engaging nose 39, which extends as far as the safety shaft 55.

If this is based on its scope, the deduction is fixed (security position). If the securing shaft is then rotated until a recess is opposite the upper end of the securing extension, the trigger can be pushed backwards because this recess allows the securing extension to be immersed and thus the pivoting movement of the trigger 33. Up to this point, the trigger and tee device according to the invention corresponds to the known one mentioned above, and thus the trigger weight corresponds to both, which, as is customary with a military weapon, is quite high.

In the knock-off device according to the invention, the tap 13 has a projection 101 at a point which corresponds to the tap handle of a revolver tap. Furthermore, at the level of the safety shaft 55, but behind it, an axis 109 parallel to the cock shaft 21 is arranged in the handle 1, on which the rear end of a pivot lever 103 is pivotally mounted. The axis 109 also passes through the eyes of two adjacent and structurally identical escapement springs 105 which resemble flat clothespin springs, only one of which is visible and which press the swivel lever 103 downwards with its front end. This front end carries a pawl 107, which has a lower, flat edge, which in the clamping position shown rests on the projection 101 of the valve 13 and tries to press it down by the action of the locking springs 105. As a result, the tap 13 is not pushed back, but the force with which the locking lug 19 of the tap 13 is pressed against the counter lug 47 of the trigger lever 43 is reduced by the action of the locking springs 105 - the trigger 33 has become softer, i.e. the trigger weight is reduced.

If the trigger 33 is now pulled, then the cock 13 is released, and since the force of the striking spring, which acts on the projection 101, overcomes the force of the escapement springs 105, which also acts on the projection, the cock 13 subsequently strikes unimpeded after the Swing lever 103 was swung upwards by the force of the striking spring with its front end. Now the shot is released and at the same time the pivot lever 103 returns approximately to the position shown in the figure. The pawl 107 is held in the position shown by a pawl spring, not shown. While the cock 13 is now cocked again, ie moved back into the position shown in the figure, the projection 101 runs onto the front inclined surface of the pawl 107 shown, presses it back against the action of the pawl spring and runs to a dead center, after which the tap 13 runs back into the position of the figure and sits again with the projection 101 on the lower edge of the pawl 107.

The pivot lever 103 has a window which is penetrated by the securing shaft 55. The upper inner edge of the window has a cam projection which points downward and, in the fire readiness position shown, dips into a locking recess in the outer circumferential surface of the securing shaft 55. If the locking shaft 55 is now rotated into the locking position, then the outer circumference of the locking shaft 55 engages under the cam projection and thus lifts the pivot lever 103 so that the projection 101 and the pawl 107 disengage.

The same inhibitor could also be installed in the known trigger device if the trigger weight should be drastically reduced there.

Claims

Expectations

1. A firing device for small arms, with an impact piece (13) which can be held in a cocked position by a trigger mechanism (33, 43) or released after its actuation and can be moved into a rest position after being released by the action of a striking spring, in order to initiate the ignition of a cartridge, characterized by an inhibiting device (103, 105, 107) which is set up to act on the

Impact piece (13, 101) in its clamping position to apply an inhibiting force which is opposite to the force of the impact spring and is smaller than this.

2. Teeing device according to claim 1, characterized in that the inhibiting device (103, 105, 107) is set up to remain at least largely ineffective when moving the striking piece (13, 101) from the rest position into the tensioned position.

3. Teeing device according to one of the preceding claims, characterized in that the inhibiting device (103, 105, 107) is designed as a directional lock, which interferes with the striking piece (13, 101) only when moving from the tensioned position into the rest position .

4. Teeing device according to one of the preceding claims, characterized by a securing device (55) which, in its securing position, cancels the engagement between the inhibiting device (103, 14D5, 107) and the striker (13, 101).

5. Teeing device according to one of the preceding claims, characterized in that the inhibiting device (103, 105, 107) can be moved into a constantly ineffective position.

6. Teeing device according to one of the preceding claims, characterized in that the striking piece is designed as a cock (13) which travels the stroke in a circular path about an axis (21), and that the cock (13) circumferentially has a protruding projection (101 ) which can be brought into engagement with the inhibiting device (103, 105, 107).

7. Teeing device according to claim 6, characterized in that the inhibiting device (103, 105, 107) has an inhibiting finger (103) which can be applied against the projection (101) from outside the stroke path by the force of an inhibiting spring (105), when the tap (13) is in the clamping position.

8. Teeing device according to claim 7, characterized in that the inhibiting finger as a pivot lever

(103) is formed, which is pivotally mounted at one end and can be placed at its other end against the projection (101), and that the locking spring (105) loads the pivot lever (103) to bear against the projection (101). ± r>

9. A knock-off device according to claim 8, characterized in that the end of the pivot lever (103) which can be placed against the projection (101) has a pawl (107) which can be swung out resiliently and which acts on the projection (101 ) of the valve (13) when it is in the tensioned position, but pivots out of engagement with the projection (101) when the valve (13) is moved from the rest position into the tensioned position.

10. Teeing device according to one of claims 8 or 9, characterized in that the pivot lever (103) by the escapement spring (105) against the surface before a non-circular, rotatable locking shaft

(55) is pressed, in a first rotational position causes the locking of the trigger mechanism and / or the reduction means and releases it in a second rotational position, and that the securing shaft (55) has a circumferential elevation, ^'in the first rotational position of the pivot lever (103) engages and lifts out of engagement with the projection (101) of the valve (13).

11. Teeing device according to claim 10, characterized in that the securing shaft (55) has the following features:

a third rotational position in which the trigger mechanism and the knock-off device are released, and

a further circumferential elevation or circumferential recess which lifts the swivel lever (103) or into which the swivel lever (103) falls and thereby comes into a position in which it is out of engagement with the projection (101) of the valve (13), even if this is in the clamping position.