EP0034151A1

EP0034151A1 - Fuse head for a hand grenade fuse

Info

Publication number: EP0034151A1
Application number: EP80901461A
Authority: EP
Inventors: Hans Assmann
Original assignee: Oregon Etablissements fuer Patentverwertung
Current assignee: Oregon Etablissements fuer Patentverwertung
Priority date: 1979-07-31
Filing date: 1981-02-24
Publication date: 1981-08-26
Also published as: ZA804433B; BE884541A; AT364285B; GB2070208B; WO1981000451A1; SG4484G; MY8400328A; ATA524779A; GR68793B; GB2070208A; PH21193A

Abstract

Afin d'augmenter la securite du lanceur entre le retrait de la goupille de securite (20) et le jet de la grenade a main, la tete de fusee (1) est munie d'une surface (5) assurant le guidage de la partie (3) en forme de crochet qui entoure un boulon de support (9) et maintient en place l'etrier de securite (2), cette surface de guidage etant adaptee a la courbure de la partie de maintien (3) et reposant sur son cote oppose (4) au boulon de support (9). De plus, au moins un dispositif de pincement (12) ainsi que de preference aussi au moins une surface d'appui (14) pour l'anneau de retrait (19) de la goupille de securite (20) sont disposes sur une paroi laterale (26) de la tete de fusee (1), de maniere a realiser un appui en trois points. Les deux Joues laterales (21) de l'etrier de securite (2) penetrent, dans la zone de la goupille de securite (20), a l'interieur de deux rainures (22) menagees dans la tete de fusee (1) chacune entre une paroi laterale (26) et une douille (24, 25).In order to increase the safety of the launcher between the withdrawal of the safety pin (20) and the throwing of the hand grenade, the rocket head (1) is provided with a surface (5) ensuring the guiding of the part. (3) in the form of a hook which surrounds a support bolt (9) and keeps the safety bracket (2) in place, this guide surface being adapted to the curvature of the holding part (3) and resting on its opposite dimension (4) to the support bolt (9). In addition, at least one clamping device (12) as well as preferably also at least one bearing surface (14) for the withdrawal ring (19) of the safety pin (20) are arranged on a side wall. (26) of the rocket head (1), so as to achieve a three-point support. The two side cheeks (21) of the safety bracket (2) penetrate, in the area of the safety pin (20), inside two grooves (22) made in the knuckle head (1) each between a side wall (26) and a bush (24, 25).

Description

Detonator head for a hand grenade detonator

The invention relates to a detonator head for a hand grenade detonator with a securing bracket which, in the secured position, in which it is held by a locking split pin having a pull-out ring, holds a striking piece of the detonating head and pivots with a hook-like curved holder on a supporting bolt of the detonating head. and is detachably mounted.

Characteristic of the known prior art

Such detonator heads are known in various designs (US Pat. No. 2,562,928; AT-PSen 253,987, 323,606, 347,298; DE-OS 20 31 940) and ensure adequate safety when operated properly. The hand grenades are taken for throwing in such a way that the bow rests on the palm of the hand, so that the safety split pin extends essentially in the direction of movement of the second hand of the launcher engaging the retaining ring. This position of the hand grenade is necessary so that the bracket remains in contact with the hand grenade body after the cotter pin has been pulled out and is not thrown off, as a result of which the grenade would be ignited prematurely. If operated improperly, however, it can happen that, without the hand grenade being thrown and the safety bracket falling off, the striking element overturns and the delay set is triggered.

Because the safety bar is still attached to the hand grenade, the thrower can then believe that it is still secured, but this is not the case. The detonation takes place after about four seconds while the hand grenade is still in the hand of the launcher.

Reasons for early release are: a) The hook-like bracket of the opening safety bracket is released from the support bolt of the fuse head and the safety bracket is "pushed" out of the hand. This process comes as a surprise, at least for the inexperienced launcher, so that the delay time of the primer may no longer be sufficient to throw the sharp hand grenade far enough away. This unintentionally te solution of the hook-like bracket may be even easier in that it is bent, broken or torn by external effects and does not properly grip the support bolt.

b) In the version according to AT-PS 323.606, the clamped retaining ring is now approximately parallel to the palm of the wearer's hand and, in order to be brought into the extended position, must be turned forward by approx. 180 °. This means that when turning the retaining ring must be changed, or that the hand must be twisted unusually to loosen the retaining ring. Both have the result that the thrower is tempted to hold the grenade in his hand other than in the position that is not dangerous for him, in order to make it easier to release the retaining ring.

c) Detonator heads are now generally made of plastic, but the safety bracket is made by pressing from a metal sheet. The two side cheeks of the safety bracket are in a secure position on the side walls of the detonator head. The cotter pin with its free end, which is spread out, projects on one side with the eyelet for the retaining ring on the other side. The free, protruding end of the split pin can be pushed back into the detonator head due to carelessness, dropping, etc., which eliminates the spread and, because the side plates of the retaining clip are very thin, a side plate loses its hold on the split pin. In white As a result, the cotter pin can of course very easily be pulled out completely.

Object of the invention

The object of the invention is to eliminate at least the most important disadvantage mentioned first and to create a detonator head that is as safe as possible until the actual throw.

State the nature of the invention

According to the invention, this is solved by a guide surface of the igniter head which follows the curvature of the hook-like holder and which lies on the side of the hook-like holder which is remote from the supporting bolt.

The hook-like holder of the safety bracket is thus performed according to the invention in a circular arc-shaped slot corresponding to its curvature between the support bolt and the guide surface. The hook-like holder can no longer stand out radially from the supporting bolt, but rather can perform an exclusive rotary movement around it. It is also no longer free, since it is protected by the guide surface, so that bending due to external influences is impossible, as well as bending when the safety bracket is opened and closed several times within the opening angle up to the overturning of the impact piece, which may be the case with the "game "in the hand, consciously or out of nervousness of the inexperienced thrower.

In a preferred embodiment, in which the support pin is arranged on a central support web protruding from the detonator head, it is provided that the guide surface on both sides of the support web on lateral projections the support web is formed. In particular, this embodiment also ensures the lateral protection of the hook-like holder, since the total width of the guide surface corresponds at least to the total width of the hook-like holder or preferably projects beyond it.

Another embodiment of the invention, in which the support bolt and the detonator head have a common upper contact plane, provides that the upper boundary line of the guide surface lies in the top of the support web and is at a distance from the contact plane. This embodiment therefore has a depression that extends over the entire width between the top sides of the detonator head and the carrying bolt. This results in the possibility of restricting the two parts or claws of the hook-like holder formed on the left and right of the support web to the absolute length necessary for reaching around the supporting bolt, since the end region of the securing bracket having the hook-like holder can be folded in its full width. This also means stiffening this area and the hook-like holder. Since in the known designs the upper side of the support web is aligned with the upper side of the detonator head, the two claws of the hook-like holder had to be made considerably longer than necessary.

Another of the disadvantages mentioned above is remedied in one embodiment in that the pull-out ring extends approximately perpendicularly to the safety split pin in the secured position, and at least one clamping device is arranged on the side of the igniter head.

Due to this lateral arrangement of the small device and the pull-out ring, when the hand grenade is correctly gripped, the pull-out ring is approximately perpendicular to the pull-out direction of the safety pin and thus also perpendicular to the normal direction of return movement of the pull-out second hand of the launcher. The pull-out ring, which extends approximately forward from the thrower in the arrangement according to the invention, can be gripped and released very easily by the second hand. For the rotation by approx. 90 to the extended position, no gripping or unusual rotary movement of the hand is required. The release of the pull-out ring is also facilitated when the thrower is wearing gloves, which makes him clumsy from the start.

Occasionally, a secured hand grenade may fall to the ground from a greater height. In order to prevent the pulling ring fixed in the clamping device from at least partially pulling out the safety split pin due to a lever effect in the event of an impact and thus causing premature ignition, the invention further provides that at least one contact surface on the detonator head and / or along the circumferential line of the pulling ring is arranged on the area of the hand grenade body near the igniter head.

In this way, at least a three-point bearing is achieved. Of course, more than one support cam can also be provided, and thus storage at more than three points can be achieved.

The same effect can also be achieved if more than one clamping device is provided on the igniter head for the pull-out ring.

Finally, a further embodiment of the detonator head according to the invention, which also eliminates the third disadvantage mentioned at the outset, is that at least on one side, preferably on both sides of the detonator head, forming a slot in the region of the push-through hole, a sleeve which extends the push-through hole is formed at a distance from the side wall of the detonator head is the width of the slot corresponds at least to the thickness of the side cheek of the securing bracket which engages in the secured position.

The sleeve or sleeves are easily produced in one operation with the igniter head. The bore of the sleeve is widened like a funnel at the free end so that the splint end can be spread. In the preferred embodiment, in each of which a sleeve is formed on both sides, the second sleeve can serve as a sliding guide when pulling out the safety split pin so deeply, in order to avoid friction between the split pin and the safety clip and its tilting, or also as a support for the serve the pull-out ring receiving the split pin, so that a further insertion of the split pin, which could in turn cause the spread end to protrude from the other sleeve, is prevented, moreover, it is also possible to remove the split pin from one or the other from the other side.

Description of the drawing figures

The invention will now be described in more detail below with reference to the figures in the drawings, without being limited thereto.

Show it:

1 shows a hand grenade with a detonator head according to the invention;

Fig. 2 to 5 different views of the igniter head of Fig. 1 in an enlarged view;

Fig. 6 shows the safety bracket of Figure 1 in a front view.

Fig. 7, the upper part of the securing bracket in longitudinal section, and Fig. 8 is a front view of another embodiment of the igniter head.

A detonator head 1 made of plastic has a securing bracket 2 which is attached to it and can be swiveled and ejected. The securing bracket 2 is provided with a hook-like holder 3 which, in the exemplary embodiment in FIGS. 1 to 7, consists of two circular claws 15 which extend over an angular range of approximately 90 °. The claws 15 engage under a support pin 9, which is arranged on a laterally projecting support web 6 (FIGS. 3 and 4) of the detonator head 1. The support web 6 has a lateral projection 7 on both sides, which form a guide surface 5 for the hook-like holder 3. The guide surface 5 follows the curvature of the claws 15 of the hook-like holder 3 and therefore rests on its side 4 (FIG. 7) facing away from the supporting pin 9. A guide slot for the claws 15 thus remains between the projections 7 and the carrying bolt 9, which on the one hand prevents the safety catch from being lifted radially and on the other hand also prevents the claws 15 from bending. Furthermore, the hook-like holder 3 does not protrude beyond the edges of the detonator head 1 on any side, so that external influences remain on the shape of the hook-like holder 3 without disadvantageous consequences.

From FIGS. 2 and 3 it can be seen that the upper boundary line 10 of the guide surface 5 is at a distance a from a contact plane 8, in which the top of the detonator head 1 and the carrying bolt 9 is located. Since the boundary line 10 also lies in the top of the support web 6, a depression 11 is formed which extends over the entire width of the igniter head 1. The end region of the securing bracket 2 carrying the hook-like holder 3 can therefore have a bend 16 (FIGS. 6 and 7) which projects into the recess 11, which likewise contributes significantly to its stiffening. The length of the hook-like holder 3 or the claws 15 is therefore necessary Extent limited.

At the detonator head 1 there is also a bore 17 for the position bolt of the spring-loaded hammer, not shown.

The detonator head 1 is further provided on at least one side wall 26 with a clamping device 12 in the form of two clamping jaws. Between the two jaws, the pull-out ring 19 of a locking pin 20 is fixed, which is inserted into a push-through hole 13. The lateral fixing of the pull-out ring 19 enables the pull-out ring to be loosened following the normal movement sequence and immediately afterwards to pull out the safety pin 20 from the push-through hole 13 without requiring an unusual hand movement. If the safety bracket 2 faces the inner surface of a hand, when the pull-out ring 19 is loosened, it is rotated by approximately 90 in the pull-out direction. The clamping device 12 and the push-through hole 13 lie approximately diametrically opposite one another with respect to the pull-out ring 19. The pull-out ring 19 is further arranged so that its upper edge does not protrude upward beyond the contact plane 8. This avoids unintentional loosening of the pull-out ring 19 by branches or twigs in the field. Another advantage of this embodiment is that the hand grenades can be carried in the previously used munition boxes, which under certain circumstances can no longer be closed with a pull-out ring 19 projecting upwards.

At the lower edge of the detonator head 1, support surfaces 15 are formed, on which the pull-out ring 19 rests in a fixed position. This results in three-point storage, which is particularly advantageous if the hand grenade accidentally falls to the floor, since in this case a lever effect and an at least partial pulling out of the safety pin 20 is prevented. With the shown leadership example, two contact surfaces 14 are available. The desired effect can also be achieved with one or more than two contact surfaces 14. With regard to the shape of the contact surfaces 14, there are various design options. If necessary, the support surfaces (or one of the support surfaces 14) can also be designed as a clamping device analogous to the clamping device 12 or have such a clamping device.

A sleeve 24, 25 is formed on the lower part of the detonator head 1 to form a slot 22 at a distance from the side walls 26 of the upper part of the detonator head 1. The sleeves 24, 25 each have a bore in the extension of the push-through hole 13 of the igniter head 1, through which the safety pin 20 runs in a secured position. The safety bracket 2 can also be inserted into the slots 22 with its respective side holes 21, so that the width of the slots 22 corresponds at least to the thickness of the engaging side cheeks 21 of the safety bracket 2, which pivots on the support pin 9 of the detonator head 1 is detachably mounted.

In the exemplary embodiment shown, which is provided for the insertion of the safety split pin only from the side shown in FIG. 1, the clamping device 12 and the contact surfaces 14 are formed only on this side. The sleeve 24 therefore only serves as a pull-out guide for the safety pin 20 and for supporting the eye of the safety pin 20 and therefore has a cylindrical bore. On the opposite side, however, the sleeve 25 can also be provided with a funnel-like widening of its bore, in which the ends of the securing split pin 20 can be expanded without protruding therefrom. Of course, the sleeve 24 can also be of the same design. The depth of the slots 22 is of course such that the side cheeks 21 of the securing bracket 2 can be inserted so far that their bores with the through hole 13 are cursed.

In Fig. 8, a second embodiment of the fuse head according to the invention is shown in front view. In this embodiment, the hook-like holder consists of only a central claw-like extension of the safety bracket 2, which engages around the support pin 9. According to this embodiment, the support pin 9 is arranged on two lateral support webs 18 and the guide surface 5 between the two support webs 18 is formed in the middle. The rest of the configuration is the same as that of the exemplary embodiment according to FIGS. 1 to 7. Here too, a depression 11 is provided, into which the fold 16 of the securing bracket 2 projects.

If a hand grenade is unlocked with the detonator according to the invention by pulling off the safety cotter pin, and the safety bracket is moved in the area of the opening angle in which the impact piece does not roll over, the safety bracket 2 rotates exactly in the one formed between the supporting bolt 9 and the guide surface 5 Guide slot and is not bent radially or deformed in its ha ken-like bracket 3.

Claims

Patent claims

1. Detonator head for a hand grenade detonator with a securing bracket which, in the secured position, in which it is held by a locking pin with a pull-out ring, holds an impact piece of the detonator head and hangs it with a hook-like curved holder on a supporting bolt of the detonating head and removably hangs it is characterized by one of the curvature of the hook-like holder (3) follow de guide surface (5) of the detonator head _. (1), which rests on the side (4) of the hook-like holder (3) facing away from the supporting bolt (9).

2. Detonator head according to claim 1, characterized in that ddiiee FFüühhrruu: ngsfläche (5) limits a swivel angle of approximately 90 °.

3. Detonator head according to claim 1 or 2, in which the Trdgbol zen is arranged on a central support web protruding from the igniter head, characterized in that the guide surface (5) on both sides of the support web (6) on lateral projections (7) of the support web (6) is trained.

4. detonator head according to claim 3, wherein the support pin and the detonator head have a common upper contact plane, characterized in that the upper loading limit line (10) of the guide surface (5) in the

The top of the support web (6) lies and has a distance (a) to the plane of contact (8).

5. Detonator head according to one of claims 1 to 4, characterized in that the pull-out ring (19) extends approximately perpendicular to the safety pin (20) in the secured ter position, and at least one small device (12) is arranged on the side of the igniter head (1).

6. detonator head according to claim 3 and 5, characterized in that the pull-out ring (19) is arranged in a secured position below the contact plane (8) of the detonator head (1).

7. Detonator head according to one of claims 1 to 6, characterized in that along the circumferential line of the pull-out ring (19) at least one contact surface (14) is arranged on the detonator head (1) and / or on the area of the hand grenade body (23) close to the detonator head .

8. Detonator head according to one of claims 1 to 7, characterized in that at least on one side, preferably on both sides of the detonator head (1), forming a slot (22) in the area of the Durσbsteckloches (13) for the safety pin (20) one Dufchsteckloch (13) extending sleeve (24, 25) is formed at a distance from the side wall (26) of the igniter head (1), the width of each slot (22) at least the thickness of the side cheek (21) engaging in it in a secured position Safety bracket (2) corresponds.