DE1264298B - Impact fuse for twist-free projectiles - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. GL:

F 42c

German KL: 72 i-3/08

Number: 1264 298

File number: J 297611 c / 72 i

Filing date: January 4, 1966

Open date: March 21, 1968

The invention relates to an impact fuse for swirl-free projectiles, which has web security means, the one actuated indirectly by a spring and the radial adjustment speed a rack with the help of an escapement-regulating compensation lever, the first Has locking means that both the ■ effective the compensation lever before the launch as well as the displacement of a firing pin lock prevent, which is also provided with additional locking means for the ignition pin bolt, which of the rack are controlled to the firing pin only after a certain displacement of this rack fully releasing, the first locking means consisting of · an axially in the body of the The detonator's movable shaft is made at the same time as the detonator bolt by removing it at most the cap is accessible to this shaft and the bolt after a functional check returned to the starting position.

The invention has set itself the task of creating a simple igniter of the type in question here To create the possibility for the functional test of the safety devices before the launch.

For the above purpose it is provided according to the invention in the new percussion fuse, that the escapement is reversible and that the toothed rack is located opposite one another in the body radially Bore is provided, which allows to act from the outside on the rack to them after the functional test returned to the starting position, with the additional locking means are arranged so that, as soon as the detonator is brought into a precisely defined position, under the Action of gravity return to the starting position before the functional test after the Firing pin latch itself has been returned to its original position.

In this way it is achieved that not only the one representing the first locking means, axially in the Body of the detonator movable shaft and the detonator pin bolt by removing at most one cap is accessible from the outside, but that the additional locking means for the ignition pin latch representing rack by means of a bore with the same design of the escapement as reversible escapement is accessible from the outside.

An exemplary embodiment of the invention is shown in the drawing. It shows

F i g. 1 shows an axial section of the igniter according to the invention along the line 1-1 of FIG. 3,

Impact fuse for swirl-free projectiles

Applicant:

Industrial Holding Establishment,

Vaduz (Liechtenstein)

Representative:

Dipl.-ing. R. Magenbauer, patent attorney,

7300 Eßlingen, Hölderlinweg 58

Claimed priority:

Switzerland of January 8, 1965 (278)

Fig. 2 is a section along the line 2-2 of

3 shows the igniter according to the invention with organs in the safety position in a section along the line 3-3 in FIG. 1,

F i g. 4 shows a representation corresponding to that according to FIG. 3, but with itself in the immediate release position organs located,

F i g. 5 shows a representation corresponding to that according to FIG. 3, but with organs in the so-called delayed position,

6 shows a section along line 6-6 in FIG. 7 in partial representation, with the compensating lever and the inhibition are shown

F i g. 7 shows the illustration according to FIG. 6 in a plan view,

F i g. 8 one already from FIG. 1 detail to be recognized, whereby the organs are in the safety position before the launch, in a partial sectional side view,

F i g. 9 shows the arrangement according to FIG. 8 in a section along line 9-9 of FIG. 8th,

FIG. 10 shows a representation corresponding to that according to FIG. 8, but with the organs in the operating position are shown which they occupy after the shot is fired, and

11 shows the arrangement according to FIG. 10 in one Section along line 11-11 of FIG. 10.

The igniter according to the invention consists of a body 1 on which a cap 3 is provided Capsule 2 is rotatably attached. A seal 4 is provided between the body 1 and the capsule 2. The immobilization of the capsule 2 with respect to the body in the axial direction is

809 519/183

achieved with the help of an elastic, slotted ring 5, which is in two associated, complementary Grooves 6, 7 is arranged, one of which (6) in the body 1 and the other (7) opposite is provided in the capsule 2. Normally this ring 5 is contracted in such a way that it is completely embedded in the groove 6. A screw 8 with a tip is in a corresponding one Threaded hole of the capsule 2 arranged so that the two outer ends of this ring 5 from each other can be removed as soon as the screw 8 is screwed in its hole to the bottom. That Removing the two ends of the ring 5 from each other causes it to expand and thus it in the in F i g. 1 (right) position shown is transferred, from which it can be seen that this ring partially seated in the two grooves 6 and 7, eliminating any axial movement of the body 1 and the capsule is prevented, but at the same time the capsule 2 remains free to face the body 1 to turn.

When the capsule 2 is in the position shown in FIG. 1 is the position shown in FIG. 3, the organs are in the safety position in which the ignition needle 9 is held immovable by an ignition needle latch 10. At the same time, the ignition needle 9 is located opposite a full wall of a drum. On the other hand, a toothed rack 12 in this safety position causes the interruption of the pyrotechnic chain which forwards the ignition, as will be shown later.

In the secured position, there is one in the body 1 opposite a full section of the capsule 2 provided radial bore 13. Two balls 14, 15 are mounted in this bore, of which the first (14) completely and the second (15) is only partially received in the bore 13. The ball 15 is partial embedded in a recess 16 of a shaft 17 parallel to the axis of the detonator. This Shank 17 is slidably guided in a channel 18 which is arranged in a frame 19 of a safety device which will be described later. The lower hollow end of this shaft 17 is housed in a sleeve 20, which in turn is in a recess in the. Body 1 is arranged. One Compression spring 21 is provided in the interior of the sleeve 20 and acts according to FIG. 1 from the bottom to the top on the shaft 17. As long as the balls 14 and 15 are in the position shown in Fig. 1, the shaft 17 is blocked and kept immobile. In this safety position, the Shank 17 the ignition pin 10, d. that is, it prevents it from turning around its pivot axis 22 (Fig. 2) to turn.

In addition, the following means are also provided to block the firing pin latch 10: A ball 23 partially engages in a recess 24 · on the lower side of the firing pin lock 10 and partially into a bore 25 parallel to the axis of the detonator and provided in the upper part 26 of the frame 19 is. For assembly reasons, the frame 19, 26 consists of two parts. The aforementioned ball 23 is held in the position shown in FIG. 1 by the pin 27 which is displaceable in the bore 26 is arranged. The lower end of this pin 27 abuts the rack 12 when the organs are in the in Fig. 1 are in the position shown.

If you want to arm the detonator, either put it in the immediate release position 4 or in the delay position according to FIG. 2 and 5, you turn the capsule 2 in the desired direction in relation to the body 1. The following explains what is in both these cases take place.

When the capsule 2 is rotated in such a way that the organs are in the immediate release position according to FIG

ίο F i g. 4 are transferred, d. H. until the moment in which the identification mark I shown on the capsule 2 has taken the position that the one the identification mark S is in the secured position (FIG. 3), a fixed relative to the capsule 2 engages Driving fingers 28 partially into a slot 29 provided in drum 11. With the relative Rotational movement of the capsule 2 with respect to the body 1, the driving finger 28 forces the drum 11 to rotate on its own axis by drawing it from the position shown in FIG. 3 visible position in the in Fi g. 4th Position shown transferred. As a result of this fact, the ignition charge 30 lies in the axis of the igniter. This ignition charge is for instantaneous ignition (immediate triggering) when the projectile hits intended. The other ignition charge 31 of the drum 11 takes the one shown in FIG. 4 position shown.

In order to pass from the secured position into the delay position, the capsule 2 is in the Rotated way that the identification mark R is transferred to the position that the identification mark S in the safety position holds. In the delay position, the organs are in the position shown in FIG. 2 and 5 shown Position. The rotation of the capsule 2 in a direction opposite to that described above Direction caused with the back of the driving finger 28 the rotation of the drum 11 in such a way that in this case the ignition charge 31 in the axis of the Floor is (Fig. 5). The ignition charge 31 differs from the ignition charge 30 in that

40 'it ignites more slowly than with the immediate release.

The transfer to the exact immediate release or delay position, d. H. the correct rotation angle the capsule 2 in relation to the body 1 is ensured by the following means:

A cam 32 is attached to the body 1 and is opposite to one provided in the capsule 2 Milling 33. In the secured position, this cam 32 is located between the two Ends of the cutout 33, while he is in the immediate release position at one of these ends and in the Delay position is applied at the other end. So the choice of one of these operating positions, delay or immediate release position can be taken without the aid of the eyes. As soon as the organs of the detonator are either in the immediate release or in the delay position, the projectile can be fired.

At the time of launch, the following happens:

The transfer of capsule 2 into the immediate release or delay position, As a result, the bore 13 is faced with a cutout 34 with a depth that is sufficient so that the balls 14,15 can move up to the position shown in Fig. 10, in which the ball 15 has completely emerged from the recess 16. The shaft 17 is therefore through the Balls 14,15 no longer blocked.

At the moment of launch, the shaft 17 goes out of position as a result of its persistence according to FIG. 8 in the position according to FIG. 10 by compressing the compression spring 21. As soon this position is reached, relaxes one attached to a part of the body 1 in a manner not shown Leaf spring 35 and here goes from the position according to FIG. 8 in the position according to FIG. 10 about, in which its free end is opposite the upper end of the shaft 17. From now on This leaf spring 35 prevents the shaft 17 from continuing to obey the action of the compression spring 21. Of the Shaft 17 is thus blocked in the lower position.

In this lower position there is a further recess 36 in the shaft 17 on a compensating lever 37 opposite, the one running coaxially with the detonator hollow axis 38 is pivotably mounted. Before the shot is fired, d. i.e. as long as the When shaft 17 was in the upper position, this shaft held the balance lever 37 (and the firing pin latch 10) and prevents it from pivoting. Now that this shaft 17 is in the is in the lower position, it no longer opposes this pivoting. This balance lever 37 now pivots thanks to the following means under the action of a compression spring 39: This compression spring 39 is disposed in a threaded plug 40 which is inserted into a radial bore of the Body 1 is screwed in, which is opposite the rack 12. The ignition charge 41 is of the Rack 12 worn. The inhibition 42 cooperates with a gear 43, which with a pinion

44 is connected to another gear

45 combs; this gear 45 is firmly connected to another pinion 46 which is connected to the toothing 47 the rack 12 meshes. It goes without saying that the gear train described above under the action the compression spring 39 to rotate and the inhibition 42 begins to act as soon as the balance lever 37 can pivot, which leads to the rack 12 advancing step by step. This shift the rack 12 in the frame 19 continues until the moment in which this rack 12 abuts against a portion of the body 1 of the detonator, as shown in FIG. If the Rack 12 has reached the end position, its ignition charge 41 is located in the axis of the detonator. From this point on, the various elements of the pyrotechnic chain (30 or 31, 41 and a transfer charge 53 of detonator 54 in FIG. 10) aligned so that ignition can take place can. Before the rack 12 reaches its end position, its rear end piece 48 goes to lower end of the pin 27 over, which has the effect that it is no longer in the position shown in FIG. 1 bleated is. Under the action of a not shown and acting on the ignition pin 10 Torsion spring rotates this bolt, whereby the ball 23 and the pin 27 are pressed downwards, since this pen is no longer held back. As soon as the firing pin latch 10, the firing pin 9 is released the latter is able to cause the ignition. This can be done in two ways, namely either by impact or impact on the central part 49 of the cap 3, which crushes or is pressed in and the ignition needle 9 is pushed downwards as shown in FIG. 1 presses, or if the projectile strikes against an obstacle, d. H. is braked, the drum 11 is driven by its inertia thrown forward, and the detonating charge 30 or 31, which is in axial alignment, strikes onto the tip of the ignition needle 9. The spring 50 normally holds the ignition needle 9 in the rest position.

The detonator shown is also equipped with railway safety means, which consist of a Compression spring 39 actuated and the radial adjustment speed of a rack 12 for the ignition charge 41 regulating compensating lever 37 exist, the regulation being carried out by an inhibition 42 will. These railway securing means also comprise first locking means (shaft 17), to on the one hand the compensation lever 37 before the launch and on the other hand the displacement of the firing pin lock 10 to prevent. There are also additional locking means provided by the Pin 27 and the ball 23 are shown, and serve the ignition needle 9 only after a certain displacement to release the rack 12 completely.

It should be noted that the first locking means in this example advantageously from a consist in a known manner in one piece shaft 17, which is axially in the body 1 of the detonator slides. In this way, a number of organs found in known detonators are replaced by a single organ. It goes without saying that the means not shown are one can easily imagine being provided for an accidental rotation of the shaft 17 about its own To prevent axis.

It must also be noted that the shaft 17 is at the same time as the firing pin latch 10 is accessible by simply removing the capsule 2. This weight loss is easy to do, since you only have to unscrew the screw 8 slightly so that the elastic ring 5 is in the retracted position Arrives position and so the capsule 2 releases. This offers the possibility of the shaft 17 and return the firing pin latch 10 to the starting position after the functional check has been carried out. As is known, a functional check is understood to mean a mechanical check which it allows all functions of the detonator to be checked, with the exception of the ignition itself, of course. This ignition can be prevented very simply by using a drum for the experiment

11 provides, which is equipped with an inert ignition charge and which is replaced after the experiment will.

Furthermore, to carry out the function check in the body 1 is a radial, with a thread provided bore 51 is provided, which is diametrically opposed to the compression spring 39. One with a thread provided plug 52 normally closes this bore 51. After the functional test, when the rack 12 is in the end position (Fig. 11), it is easy to move the rack

12 returned to the starting position. It is sufficient to unscrew the plug 52 and the To push back the rack 12 with the help of a pin-like aid inserted into the bore 51, until the rack 12 is in the end position. This recoil or return movement the rack 12 is made possible in that the escapement 42 is reversible. If the Rack 12 in this way in the starting point

development according to FIG. 1 has been returned, one acts while it is held in this position, on the shaft 17 with the help of another pen-like tool of the same diameter, so as to the withdrawal of the leaf spring 35 and then the return of the shaft 17 in the upper position below the action of the compression spring 21 to achieve. As soon Once this has been done, the escapement mechanism and the rack 12 are blocked in the starting position. Of course, one must take the precaution, first the firing pin latch 10 returned by hand to the locking position and then the detonator with the To turn the tip downwards, with the result that the action of gravity causes the pin 27 and the ball 23 can be returned to the operating position according to FIG. That way lets also the lower end of this pin 27 of the rack 12 in its retraction movement free passage.

When the control has been completed and the organs have been returned to their starting position are, you reinsert the capsule 2, screw the screw 8 with point to the bottom, then the plug 52 is inserted. The organs 8 and 52 can be hit with a point, a grain, etc., or by caulking, so as to make acts of sabotage to prevent.

Claims (2)

Patent claims: 1. Impact fuse for swirl-free projectiles, which has web security means that consist of a indirectly actuated by a spring and the radial adjustment speed of a rack with hooves of an escapement-regulating compensation lever, which also has first locking means has, which both the entry into effect of the equalizing lever before the launch as well prevent the displacement of a firing pin lock, which is also provided with additional locking means for the firing pin lock, ~ 3ie controlled by the rack, the firing pin only after a certain shift to fully release this rack, the first locking means consisting of an axial exist in the body of the detonator movable shaft, which is at the same time with the ignition pin lock by removing at most the cap is accessible to this shaft and the latch after completion Function check returned to the starting position, characterized in that that the inhibition (42) is reversible and that the rack (12) has a radially arranged bore in the body (1) opposite it (51) is provided, which allows it to act from the outside on the rack (12) in order to follow the Functional test returned to the starting position, with the additional locking means (23 to 27) are arranged so that as soon as the detonator is in a precisely defined position is brought under the action of gravity in the starting position before the functional test get back after the firing pin latch (10) itself has returned to its starting position has been. 2. Impact fuse according to claim 1, characterized in that the first locking means from an axially slidable arranged in the body (1) of the igniter, in a manner known per se consist of one-piece shaft (17) which cannot be rotated about its own axis. Considered publications:
German patent specifications No. 1122 878, 1135 798. For this purpose 2 sheets of drawings 809 519/183 3. 68 © Bundesdruckerei Berlin