FR2594220A1 - INSTANT PERCUTANT FLIPPER-DETONATOR FOR NON-GIRANT PROJECTILES - Google Patents

Abstract

Fuse characterized in that the striker 2 is guided in its middle part in the body 7 and its head in the warhead 8, while an axial weight 9 sliding around the striker is urged towards the head 10 of the striker by a first spring 11 resting on the firing pin, and is also urged towards the tip of the bullet 8 by a second spring 12 bearing on the body 7 and the stroke of which is limited, until the departure of the projectile, by a free wedge 13, wedged between the weight 9 and a first shoulder 14 of the ogive stopper by the biasing of the second spring 12, so that the head 10 of the striker does not protrude from the tip of the ogive 8, while the point 15 of the striker 2 laterally blocks the pivoting support 4 of the primer against the action of a third spring 16 loaded, driving the clockwork movement 5. (CF DRAWING IN BOPI)

Description

Fusée-detonator percussion

  Instant for non-gyrating projectiles.-

  The present invention relates to the

  detonator rockets equipping projectiles.

  More specifically, it is intended for instantaneous impact rockets for mortar shells and other non-gyrating projectiles. These rockets must meet certain criteria

  safety operation. Until their introduction

  launching rockets must not be able to operate in the event of a false or accidental

  sabotage must be detectable.

  Many solutions have been proposed to these problems, and the rockets currently used are relatively complex, and for the most part require an arming maneuver before the projectile is introduced into the launch weapon. If the user forgets this ultimate maneuver, the rocket does not work

  not and the projectile is inoperative.

  All rockets must, in addition, only become operational at a distance after their release from the launch weapon to ensure the safety

Staff.

  A rocket of this type is described in particular in the French patent application filed May 18, 1980

under number 81 09 819.

  The object of the invention is to provide a simple, robust and reliable rocket which does not require any cocking maneuver before launching, and which presents

the required guarantees.

  The object of the invention is an instantaneous rocket detonator, for a non-gyrating projectile, comprising an ogival body enclosing an axially sliding striker for sinking on impact and striking a primer triggering the explosion of the projectile by a pyrotechnic chain; the primer being housed in a

  pivoting support, blocked until the start of the projecti-

  the point of the striker, which then disappears under

  the action of an inertia device, and releases a movement

  timepiece causing the support to bring, after a predetermined time, the primer in the axis

  the firing pin, and in communication with a pyro relay

  technical, - rocket characterized in that the percussion

  is guided in its middle part in the body, and its head in the ogive, while an axial feeder, sliding around the striker, is urged towards the head of the firing pin by a first spring bearing on the firing pin, and is also biased towards the tip of the warhead by a second spring bearing on the body and whose stroke is limited, until the departure of the projectile, by a free wedge, wedged between the weight and a first abutment shoulder of the ogive by the solicitation of the second spring, so that the head of the striker does not protrude at the tip of the warhead, while the tip of the striker laterally blocks the pivoting support of the primer against the action of a third spring bandaged workout

  watch movement; rocket also

  risée in that, starting from the projectile, the flyweight slides by inertia around the firing pin by compressing the first and second springs and releasing the wedge, before being pushed by the first and second springs driving the firing pin

  towards the tip of the warhead to a second shoulder-

  stop of the ogive o the head of the striker protrudes out of the warhead, while the tip of the striker releases the support primer which the movement of clockwork brings progressively, before

  the impact, the primer in the axis of the striker.

  The wedge can be constituted by at least one ball sliding freely between the weight and the

internal side wall of the ogive.

  Such a ball can be kept partial-

  axially and radially free in an annular groove dug in the side wall of the

flyweight.

  If you want an extra guarantee, a safety pin that can be torn off by hand can jam the weight with the ball,

  through the side wall of the ogive.

  However, in general, security

  during transport can be satisfactorily

  by packing rockets - or projectiles with rockets in packages that do not leave

  longitudinal play. Thus, even in case of shock sufficient

  to release the ball, the percussion

  the driver remains depressed away from the leader.

  When unpacking, the striker output immediately signals

danger.

  So that the accidental arming of the rocket is quite obvious, it is preferable that the lateral part of the head of the striker called to protrude out of the warhead is of a vivacious color with the external color of

  the ogive and that of the top of the striker's head.

  The invention will be better understood when reading

  detailed description which will follow and to

  attached drawings which represent, by way of non-limiting example, an embodiment of the invention. On these drawings:

  FIG. 1 is a diagrammatic view, in elevation

  partly in diametrical section, depending on the

  line I-I of FIG. 2, of a rocket according to the invention

  2 is a diagrammatic sectional view according to the laundry II-II of FIG. 1; FIG. 3 is a view similar to FIG. 1 along line III-III of FIG. the same rocket after arming, and Figure 4 is a sectional view according to the

line IV-IV of Figure 3.

  In these figures, the same elements are

  designated by the same reference numbers.

  The rocket shown in the drawings essentially comprises an ogival body 1 composed of a cylindrical body 7 in which is screwed a nose 8 with interposition of an O-ring seal 23. The body 7 is screwed to the end of a projectile by a thread 40 inside which it receives an end of a detonator 24 with the interposition of an O-ring seal 25. Inside the body 7, is housed a pyrotechnic relay 26 axially in communication with the detonator 24 and the interior of the Gothic body 1. A radial blind bore 27 allows the locking of the various screwings with a stud wrench The body 7 also contains a clockwork movement 5 actuated by a toothed sector 28 carrying a flap 4 supporting a primer 3 and pivoting about an axis 29 under the stress of a spring 16 anchored, firstly in a plate 30 and secondly in the

part 4.

  A second plate 31, held by spacers 32, receives the ends of the pivots of the

  different organs pivoting through their other

  in the plate 30. The upper plate 31 is traversed freely in its axis by the tip 15 of a striker 2. The tip 15 laterally blocks, in the safety position of Figures 1 and 2, the flap 4 to prevent it. to pivot under the action of the spring 16. The other end of the striker 2 is integral with a blind head 10. Around the striker 2 slides freely a weight 9 dug a peripheral groove 19 which maintains

  partially a ball 13 inside a box

  cylindrical 18 hollowed in the warhead 8.

  A first spring 11 coaxial with the striker

  is supported, on the one hand on a collar 33 solidi-

  and secondly against the underside of the flyweight 9. A second spring 12 is supported also on the one hand below the weight 9, and on the other hand on a plate 34 forming the base of the piston. the ogive 8, and crossed by the tip 15 of the striker. The ball is thus held stuck axially against a shoulder 14 of the nose 8. It is held radially, on the one hand between the inner wall of the housing 18 and on the other hand the sides of the groove 19 of the weight. The head 10 of the firing pin is held against the end of the warhead 8

  by the spring 11. An O-ring 35 ensures the

  between head 10 and warhead 8.

  A pin 20, torn by hand, through the wall of the nose 8, and a portion of which engages in the groove 19, provides an additional guarantee

against any accidental arming.

  An O-ring 36 seals around

pin 20.

  In the safety position shown in Figures 1 and 2, the head 10 of the striker is flush with the end of the warhead 8. The pin 20 is optional and can generally be omitted, the device providing excellent security by jamming the ball 13. At the start of the projectile, the weight 9 slides by inertia along the striker 2 which can not

  sinking further due to the stop of the collar

lerette 33 on the plate 34.

  When the weight 9 compressing the springs-

  11 and 12 reaches below the housing 18 in the enlarged cylindrical portion 37, the ball 13 escapes and the weight 9 can go up to the bottom of the warhead 8 by driving the striker by its head 10 to come into stop against the shoulder 17 in

warhead 8.

  The raising of the striker 2 causes the release-

  of the pivoting support 4 of the tip 15 of the percussion

  tor, and the spring 16 can drive the flap 4 under the control of the clockwork movement 5 driven by a

classic exhaust 38.

  When the support 4 has finished its course, the various elements of the rocket, then in course of trajectoryoccupy the positions represented in FIGS. 3 and 4. The primer 3 is in the axis of the tip 15 of the retracted percuter, and also in the axis of the pyrotechnic relay 6. The ball 15 rests freely in the housing 37, and the head 10

  striker protrudes out of the warhead 8.

  The side wall of the head 10 of the striker painted a bright color, slice with the color of the

  upper face 22 of the head 10 and the body 8.

  For example, the side wall 21 may be yellow or bright red, while the top 22 of the head 10, as well as the whole of the outside of the body

  Gothic 1 can be painted a classic neutral gray.

  Thus, in case of accidental armament, such as a shock at the base of the rocket or projectile, or in case of sabotage, the appearance of the

  projecting head of the striker is immediately detected

table.

  Of course, the invention is not limited to the embodiment described and shown

  it is susceptible of many variations

  1 to those skilled in the art, depending on the intended applications and without departing from the scope of the invention.

Claims (5)

  1. Instant percussive fuze-detonator,   for non-gyrating projectile, comprising an ogic body   val (1) enclosing an axial sliding striker (2)   to hit the impact and strike a primer (3) triggering the explosion of the projectile by a pyrotechnic chain, the primer being housed in a   pivoting support (4), blocked until the start of the   jectile by the point of the striker which then fades under the action of an inertia device, and releases a clockwork movement (5) causing the support to bring, after a predetermined time, the primer in the axis of the firing pin, and in communication with a pyrotechnic relay (6); characterized in that the striker (2) is guided in its median part in the body (7), and its head in the warhead (8) while an axial weight (9) sliding around the striker is urged towards the head (10) of the firing pin by a first spring (11) bearing on the firing pin, and is also biased towards the tip of the nose (8) by a second spring (12) bearing on the body (7) and the stroke of which is limited until the launching of the projectile by a free block (13) wedged between the weight (9) and a first shoulder (14) for abutment of the warhead by the biasing of the second spring (12) , so that the head (10) of the striker does not protrude at the tip of the warhead (8), while the tip (15) of the striker (2) laterally blocks the pivoting support (4) of the primer against the action of a third spring (16) banded, driving the watch movement (5); rocket also characterized in that, at the start of the projectile, the weight (9) slides by inertia around the striker (2) by compressing the first and second springs (11, 12) and releasing the shim (13), before being pushed back by the first and second springs (11, 12) by driving the striker   towards the tip of the warhead (8) to a second shoulder-   the end (10) of the firing pin protrudes from the warhead (8) while the point (15) of the striker releases the bait support (4) whose movement timepiece (5) progressively brings, before the impact, the primer (3) into the axis of the striker (2).   2. Rocket according to claim 1, characterized   in that the wedge is constituted by at least one ball (13) sliding freely between the flyweight   (9) and the inner side wall (18) of the warhead (8).   3. Rocket according to claim 2, characterized   in that the ball (13) is kept partially   axially and radially free, in an annular groove (19) hollowed in the lateral wall of the flyweight (9).   4. Rocket according to one of claims 1 to   3, characterized in that a safety pin (20) which can be torn by hand, passes through the side wall of   the warhead (8) for wedging the weight (9) competitively with the ball (13).   Rocket according to one of claims 1   at 4, characterized in that the lateral portion (21) of the head (10) of the firing pin (2), which projects out of the warhead (8), is of a sharp color which is sharp with the external color of the warhead (8)   and the top (22) of the firing pin head (10).