DE1009981B - Electric fuse for projectiles, especially rockets - Google Patents

Description

kl. 72 i 6

INTERNAT. KL. F 07 1

PATENT OFFICE

REGISTRATION DAY:

NOTICE
THE REGISTRATION
AND ISSUE OF THE
EDITORIAL:

B 30947XI / 72i 7 May 1954

June 6, 1957

The invention relates to an electric detonator for projectiles, in particular rockets, in which an electricity storage device in the storey, in particular a capacitor, after being fired to the inner circuits of the detonator can be connected by means of a changeover switch, whereby the detonator is armed. Before the changeover switch is in locked in a position in which the power storage device is disconnected from the internal circuits of the detonator is. In this position, the power storage unit can also be connected to external contacts connected to its charge.

The object on which the invention is based is to provide the fuse element that controls the changeover switch Locked until after it was fired, as strong as possible and at the same time the ones used for unlocking To make the current surge as weak as possible. It is already known to secure a detonator against premature sharpening to use a shaving body. This shear body was sheared off uses the persistence of the organ to be locked by the shear body. Here it was necessary either to make the shear body relatively weak, so that its locking effect was insufficient, or very difficult to train the body to be locked, so that the inertia that occurred when it was fired was capable of a relatively strong one Shear body. However, both types of solution are associated with disadvantages.

It has also been proposed to use a current surge to use a fuse to melt. Here either a considerable amount of electricity had to be used be to bring a fuse of considerable safety force to melt, or else the fuse was only weak and therefore had an inadequate safety effect when even a small current surge should be enough to destroy the fuse. Also this well-known Fuse was not suitable to solve the problem on which the invention is based.

To solve this problem, it is proposed according to the invention by means of an unlocking current surge to ignite a squib, through which: a the ■ switch element of the switch in a known manner securing shear body is sheared off.

The actual energy for shearing off the safety link is therefore not supplied by a current surge, but by the explosion of the squib. This explosion energy can be very considerable, so that it is sufficient, even a strong shear body, which has a sufficient safety effect, for the electric detonator for projectiles,
especially missiles

Applicant:
Brinro Limited Societe anonyme, Tangier

Representative: Dr. F. Zumstein, patent attorney,
Munich 2, Bräuhausstr. 4th

Claimed priority:
Luxembourg of June 29, 1953

To shear off. On the other hand, the current surge that causes the ignition of the squib needs only to be minor. The object set out at the beginning is thus fully achieved according to the invention solved.

The arming current surge is preferably supplied to the squib via a contact whose Closure is brought about in a known manner upon launch.

If the element of the switch that is locked before the launch consists of a switch element designed as a persistent switch in a cylinder displaceable piston, this has according to an expedient embodiment the invention has at least one transverse bore in which pressed outward by spring pressure Contact pieces, in particular contact balls, are arranged, which are arranged with in the cylinder wall Collaborate contacts.

The invention is illustrated in the drawing, for example, namely shows

Fig. 1 is an axial section along the line III-III 5 by the changeover switch of an electric projectile fuse in its locked by a shear member Starting position;

2 and 3 are partial sections through the switch in the locked state and after shearing off the die Locking effect shear member;

Fig. 4 is an axial section through the switch along the line VI-VI of FIG. 5, the movable The switch element is in the position in which it connects the internal igniter circuits to a power store connects;

709 547/97

Claims (1)

3 4 Fig. 5 is a schematic view in plan of the position shown in Figs. 1 and 2 to the front of the switch, while 'finally thrown into the position shown in Fig. 3, Fig. 6 is a cross-section along the line VIII-VIII which represents the front of the piston at the shoulder of FIG. ter 37 of the interior of the housing 26 is applied, and the switch shown belongs to an electrical 5 charging circuit a, a _{± of} the power storage is under the, otherwise not shown projectile tongues. The sheared-off end 33 'of the shearing wire of which in a known manner a current memory up 33 is in this case ^a piston herweist from the opening 27, which for example, an Open extended and reaches into the recess 34 so that the loadable from the outside ( condenser (not shown) consists of the burr that was formed when the projectile was sheared. through which the are connected, which, for example, in the case of beta pistons from the establishment of an impact contact shown in FIGS Fig. 3 position shown this connection of the power storage is brought to the inner 15, is aligned with the direction in which the circuits and thus the S make the detonation charf - the projectile moves when fired, and the direction of the action. on the contrary, when the projectile is fired. Switch housing 26 made of electrically insulating material 20 If then, after firing, the bullet material is locked by a shear member 33 in the position shown in FIG. In has (for example 30 g), so that the piston 27 is against the wall of the housing 26, three pairs of cones are arranged inside its housing under the action of its clocks, namely in the axial plane, to move inertia backwards, which it arrives The sectional plane of FIG. 1 is two behind 25 from the position shown in FIG. 3 into the mutually lying pairs of contacts a, a _± and b, b _t FIG. 4 shown position in which the balls of and in a Axial plane perpendicular to this (sectional front piston bore 28 the contacts b and b ₁ plane of FIG. 4) a third pair of contacts c, C ₁ . and the balls of the rear piston bore 29 which the switching piston 27, which connects a relatively contacts c and C ₁ with each other. As a result, it has a large inertial mass and therefore acts as the inertia 30 that the balls of the front piston bore 28, the schailter member, points in inner-line contacts b and b _± connect with each other, the transverse planes of two mutually perpendicular power storage devices to the inner circuits of the electrical bores 28 , 29 on. In each hole fresh detonator connected, this An ^ - two switching balls 30, 31 are stored, between the end z. B. the charging of one of these inner ones where there is a spring 32, which endeavors to result in the 35 circuits belonging to special Zündkondensa switching balls to the outside against the inner wall gate. The closure of the contacts c, C _{1 of} the housing 26 to press. The thyratron body 33 which is part of the electric igniter and which interlocks the heating circuit of a shear, which locks the position shown in FIG. 1, consists, for example, of a shear. wire that extends through the wall of the housing 26 40 is expediently inserted into the side of at least one of the constructions inside the housing through a bore 27 ″ of the piston 27, and with its inner end up to one in cycles b, b _v c , C _1, for example, in the side of the piston top side, recess 34 worked into the rear of C ₁ , a recess 38 worked into, which protrudes together The position of the piston 27 shown in FIG. 4 represents the balls 30, 31 and position locked, the spring 32 in the front bore 28 of the piston a conductive connection between the Kontak patent claims: th a, Ci ₁ , which are located in the charging circuit of the capacitor serving as a current storage device and connected to the electric detonator. In this position, their rockets, in which a power storage device in the Gedes piston 26, can be used to charge the capacitor shot from the outside, in particular a capacitor, afterwards. The locking caused by the shear wire 33 to the internal circuits of the detonator is so strong that even it can be connected by means of a changeover switch, the vibrations of 200 g in each direction (g = earth 55 by an acceleration by means of an electric current surge) can not bring the piston out of its in the disengaged locking member in a position shown in FIGS. 1 and 2 position. is locked, in which the current storage is separated from the internal circuits of the igniter caused by the shear wire 33 to unlock the piston 27, is characterized in the rear, that the unlocking part of the housing 26 is arranged a squib 35, 60 current impulse ignites a squib (35) through which a small amount of a sensitive igniter, which a switch member (27) of the switch which can be ignited by an ignition spark, z. B. in a known manner securing shear body (33) contains lead ricinate (lead trinitroresorcinate). This is sheared off. Detonator is marked via a line 36 shortly after the 2nd detonator according to claim 1, thereby, firing a current surge supplied, namely by means of 65 indicates that the arming current surge of the a contact which is fed in a known manner under the squib (35) via a contact, Influence of the launch movement is closed. its closure in a known manner when AbWenn the squib 35 is brought about by an electric shock to the shot. Ignition is brought, so the piston 27 is under 3. Igniter according to claim 1, with in a cylinder Simultaneous shearing of the shear wire 33 from 70 of the sliding pistons as an inertia switch member, characterized in that it has at least one transverse bore (28) in which are arranged contact pieces (31), in particular contact balls, which are printed outwards by spring pressure (32) and which are connected to contacts (α, a _v b, b _t ) work together. 4. igniter according to claim 3, characterized in that at least one of the contacts fixed in the cylinder wall (α, a _v b, O ₁ ) is is formed that it locks the piston (27) by its corresponding movable contact piece. Documents considered: German Patent No. 486 942; French Patent No. 864811; Swiss Patent No. 175 182; U.S. Patent Nos. 2458 464, 2458467, 458 479. 1 sheet of drawings ■ © 709 547/97 5.57