JPH0656280B2 - Signal device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an outer tube containing at least one signal and at least one cover plate that detachably closes an end face side opening of the outer tube assigned to the signal. The present invention relates to a signal device having, especially a signal rocket or a signal cartridge.

BACKGROUND OF THE INVENTION Pyrotechnic signaling devices are used to draw attention to third parties, especially during aviation and navigation, in emergencies and in the event of a hazardous situation. For this purpose, on the one hand a signal rocket which is normally fired manually and on the other hand a signal cartridge fired from a suitable signal pistol is used. Such signaling devices are used as pyrotechnic illuminators to illuminate airport aprons at night or during nighttime search and rescue operations.

The signal is emitted from an outer tube or shell that contains the signal. The signal is ignited and then external tube (shell) with a detachable closure member separated from the signal
It is fired from the outer tube (shell case) through the opening.

The invention consists in constructing a closure at the upper end of the outer tube in a practical manner so that it fulfills almost two requirements. First, the closure member must withstand the mechanical loading of the signal rocket or signal cartridge, in particular the drop impact on the closed opening, so that the unignited signal does not fall out of the outer tube or shell. Secondly, after igniting the signal rocket or signal cartridge, the signal must be emitted from the opening of the outer tube with as little resistance as possible, i.e. the closure must be easily disengaged or destroyed.

In the known signaling device, the closure of the upper opening of the outer tube is performed by a cover plate, which is usually made of cardboard or cardboard. In order to prevent the cover plate from being dissociated by a mechanical load, the cover plate must be press-fitted in the outer tube so as to be fixedly fixed and adhered to the outer tube. This known arrangement does not meet the demands placed on the signaling device in mechanical terms, ie in terms of drop test.

Problems to be Solved by the Invention The object of the present invention is to solve the problems without significantly increasing the recoil.
It is an object of the present invention to provide a signaling device having a closure member that can withstand a mechanical load sufficiently.

Means for Solving the Problems The problem has been solved according to the invention by the fact that a catcher plate is provided inside the outer tube in addition to the cover plate.

Advantageous Effect of the Invention The closure according to the invention is constituted by at least one (normal) cover plate and an additional catch plate which are fitted in the outer tube with a slight clamping force. The signal is arranged in the outer tube by a trap plate so that it can withstand a mechanical (falling) load sufficiently.

In a preferred embodiment of the invention, the capture plate is bent towards the signal. This prevents undesired dissociation of the capture plate, even when subjected to mechanical loads, especially falling loads, if a signal is directed to the capture plate. This is because the signal is pressed in the central region of the capture plate bent toward the signal and the outer edge of the capture plate is widened at this time. In this way, the capture plate is wedged to the inner peripheral surface of the outer tube as the mechanical load increases. When the signal rocket or signal cartridge is ignited, the trapping plate is deformed in the opposite direction, in which case the gas pressure generated inside the outer tube, strictly above the signal, acts on the inclined surface of the trapping plate and As a result, the outer edge of the capture plate is bent in the dissociation direction. In this way, the clamping force in the peripheral surface area or the peripheral surface partial area of the acquisition plate relative to the inner peripheral surface of the external tube is reduced or eliminated in order to easily release the acquisition plate from the outer tube.
Therefore, the closure formed according to the invention does not significantly increase the recoil compared to the closures of known signaling devices.

The acquisition plate is preferably bent about its axis, preferably only about its central axis. This allows the acquisition plate to bend easily and to change its outer peripheral shape and dimensions with very little bending.

In a preferred design of the catch plate, the catch plate has a central fold line, whereby the catch plate is chevron-shaped when viewed on both sides of the fold line. The central fold line forms the apex between two (of the same size) flat surface portions that extend at an obtuse angle to each other. When the signaling device is mechanically loaded, the signal is linearly supported at the apex and tends to widen the angle between the two sides. This increases the projection surface of the capture plate. On the other hand, if the signal rocket or the signal cartridge is ignited and the gas pressure acts on the surface portions facing each other, the projection surface of the trapping plate is reduced to decrease the angle formed between the surface portions. Furthermore, such a catch plate is particularly simple to manufacture.

Instead of folding the capture plate in the middle, it can also be selectively arched in one direction as well as rotationally symmetrical (conical). The catch plate can have any suitable number of radial slits or folds so that it can be easily deformed when rotationally symmetrically bent.

According to another embodiment of the invention, the acquisition plate can be formed from an oval or oval cut piece. In this case, both axes (short axis or long axis) of the trimming piece are such that the short axis coincides with the central fold line or apex and is preferably of the same size as the inner diameter of the cylindrical outer tube or It is designed to be slightly smaller than the inner diameter of the tube. On the other hand, the major axis is formed larger than the inner diameter of the outer tube. In practice, the length of the long axis of the cutting piece is such that when the capture plate is bent, the length projected on one plane of the long axis is equal to or slightly larger than the inner diameter of the outer tube. Is designed to. In this way, the catch plate can be pushed into the upper open outer tube easily and with a slight elastic clamping force if necessary. Such a tightening force is actually generated by itself because the surface portions are forcibly bent by the apex located at the front when the capturing plate is pushed in. The cover, which engages in the outer tube, in this case has a substantially circular shape in the flat position.

The acquisition plate is preferably made of a spring-elastic material. This allows the capture plate to be sufficiently elastically deformed to maintain the clamping force in the capture plate even after the signal device has been stocked for a long time and to prevent plastic deformation when the capture plate is inserted into the outer tube. Virtually completely avoided.

EXAMPLE FIG. 1 and FIG. 2 show a closed parasitic signal rocket 10 according to the invention of conventional construction type. The parasitic signal rocket has openings 12, 13 facing each other, that is, an elongated cylindrical outer fitting 11 having open end faces. The lower opening 12 has a bottom portion 14 fixedly connected to the outer pipe 11.
A shutter-operated release member 15 for ignition is housed in the bottom portion of the shutter. A propulsion unit 17 and a signal above this propulsion unit, that is, a star unit 18 with a folded parasite 19 arranged above it, are provided above the bottom 14 in the direction of firing (arrow 16). The upper opening 13 of the outer tube 11 is a closure cap 20 and a catch plate 21 according to the invention arranged above this closure cap.
And an outer cover plate 22 made of cardboard. Furthermore, the propulsion unit 17 and the star unit 18 can be assigned a combustion unit, a deceleration unit and an intermediate unit (not shown in detail), which are formed in a manner known per se.

Unlike the acquisition plate 21 and the cover plate 22, the closing cap 20 is mounted loosely on the head of the star unit 18, which is directed towards the upper opening 13, i.e. on the parasite 19. The upper cover plate 22, which is used only for protection from moisture, is easily detachable on the upper edge of the outer tube 11,
It is bonded (not shown) by means of a moisture-proof sealing sheet (not shown), which is preferably made of aluminum. If desired, the outer cover plate can be dispensed with, ie the upper end of the outer tube 11 can be closed only by means of a sealing sheet.

As shown in FIG. 2, the capture plate 21 shown in the drawing has a V
It is bent into a letter shape. Therefore, the capture plate is the top 2 of the center.
It has two face parts 23, 24 of approximately the same size with 5. The apex 25 is formed by a fold line extending over the entire width of the capturing plate 21. In this way, the double-sided portions 23 and 24 form an obtuse angle of approximately 160 degrees.

The trapping plate 21 is arranged in the outer tube 11 such that the trapping plate 21 is pushed into the outer tube 11 at a slight distance from the upper opening 13 by the apex 25 facing the star unit 18. Has been done. In this case, the apex is supported by a closing cap 20 loosely mounted on the parasite 19 of the star unit 18 for holding the star unit and the parasite 19 in play. When the capturing plate is fitted into the outer tube 11, both side portions are elastically bent to each other, so that the catching plate is frictionally held in the outer tube 11 by an elastic tightening force. By this, vertex 2
The edge regions located on both sides of 5 are supported on the inner peripheral surface of the outer tube 11 with a clamping force.

The design of the trap plate 21 for closing the parasitic signal rocket 10 is performed as follows. That is, the thickness is 0.2 mm, the length of the short axis 54 is 40 mm, the length of the long axis 53 is 42 mm, and the parasitic signal cartridge 40 is shown in FIGS. 3 and 4. With the exception of its small size and different ignition mechanism, this parasitic signal cartridge has in principle a construction comparable to that of the aforementioned parasitic signal rocket 10.

The parasitic signal cartridge also has an outer tube 41, which is constructed in the shape of a cartridge, i.e. the lower opening 42 is closed by an integral cartridge bottom 43. The bottom of the cartridge has a detonator 44 to activate the rocket propellant charge.

In addition, the outer pipe 41 of the parasitic type signal cartridge
Inside the rocket launch charge 4 as seen in the firing direction (arrow 16)
Above 5 is a signal formed as a propulsion unit 46 and a star unit 47 with a parasite located above it.

In this case, the closure of the upper opening 49 is in a similar manner to the parasitic signal rocket 10, namely
8 by means of a closing cap 50 loosely mounted on 8, a catching plate 51 of the construction according to the invention arranged above this closing cap and a cover plate 52. The cover plate 52 is attached to the outer tube 4 if necessary to seal moisture.
Can be glued to 1.

The arrangement and configuration of the capture plate 51 of the parasitic signal cartridge is performed in a manner similar to that of the parasitic signal rocket 10.

FIG. 5 shows a plan view and a cutting piece for the capturing plate 21 or 51. The cut piece has a substantially oval cross section with a major axis 53 and a minor axis 54. Minor axis 5 that coincides with apex 25 in completed capture plate 21 or 51
4 is slightly smaller than the inner diameter of the outer pipe 11 or 41.

On the other hand, if the long axis 53 is somewhat longer, the length of the line connecting the outer edges of the catch plates located on the long axis 53 when the catch plate 21 or 51 is bent is longer than the inner diameter of the outer pipe 11 or 41. Designed to be slightly larger. If the trapping plate 21 or 51 is pushed into the outer pipe 11 or 41, such an extra dimension results in that the surface portion 23 or 24 is compressed in the elastic range, so that the surface portion itself forms a slight obtuse angle. Be compensated.

Correspondingly, the eccentricity e of the starting point for the radius R located on the major axis 53 is chosen. The size of the radius R corresponds approximately to the inner radius of the outer tube 11 or 41. The lateral edge range of the cutting piece between the radii R, that is, the range of the eccentricity e on both sides of the minor axis 54 may be rounded as shown, or may be linear. It can also be formed.

The closure member with the trapping plate 21 or 51 according to the invention can be used for other signals, for example pyrotechnical signaling devices with only one or multiple stars (without parasites) or metal strips with reflective action ( It can also be provided in a radar reflector or cartridge with a signal consisting of strips, as well as in pyrotechnic luminaires.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a vertical sectional view of an upright parasite type signal rocket, and FIG. 2 is a parasite of FIG. Fig. 3 is a vertical cross-sectional view of the upper range of the signal type signal rocket, Fig. 3 is an enlarged cross-sectional view of an upright parasite type signal cartridge, and Fig. 4 is an upper side of the parametric type signal cartridge shown with a 90 degree shift relative to Fig. FIG. 5 is a vertical cross-sectional view of the area, and FIG. 5 is a plan view of a cutting piece for manufacturing the capturing plate. 10: Parasitic signal rocket, 11,41
...... Outer tube, 12, 13, 42, 49 …… Aperture, 14 ……
... Bottom, 15 ... Release member, 17,46 ... Propulsion unit, 18,47 ... Star unit, 19,48 ...
Parasite, 20 ...... Closed cap, 21,51 ......
Capture plate, 22, 52 ... Cover plate, 23, 24 ... Surface portion, 25 ... Apex, 40 ... Parasitic type signal cartridge, 43 ... Cartridge bottom, 44 ... Detonator, 45 ... Rocket launching device Medicine, 50 ... Closed cap, 53 ... Long axis, 54 ... Short axis, R ... Radius, e
...... Eccentricity

Claims (9)

[Claims] 1. A signal device, in particular a signal rocket or a signal device, having an outer tube containing at least one signal and at least one cover plate which releasably closes the end-side opening of the outer tube assigned to the signal. Bent capture plate (21, 51) in cartridge
And the catch plate (21, 51) is bent inward toward the signal, and inside the outer pipe (11, 14) below the cover plate (22, 52) made of cardboard. A signal device, characterized in that it is arranged in. 2. Signal device according to claim 1, characterized in that the acquisition plate (21, 51) is bent around at least one axis. 3. The signal device according to claim 1, wherein the capturing plate (21, 51) is bent in a chevron shape around a central bending axis. 4. Double-sided parts (23, 24) of capture plate (21, 51) of substantially equal size formed by bending.
The apex (25) in between forms the folding axis and these face portions form an obtuse angle with each other.
The signal device according to the item. 5. The signal device according to claim 1, wherein the capture plate (21, 51) is formed from a substantially oval or elliptical cut piece. . 6. A short axis line (54) of the cut piece has a capture plate (21,
Signal device according to claim 5, extending through the apex (25) of 51). 7. The short axis (54) of the cut piece is the outer tube (11,
41) the same size as the inner diameter or the outer pipe (11, 41)
The signal device according to any one of claims 1 to 6, which is formed to be slightly smaller than the inner diameter of the signal device. 8. A major axis (53) of the cut piece is a minor axis (54).
If the cutting piece is bent around the short axis (54) and extends through the center of the short axis perpendicular to the outer edges of the capture plate located on the long axis (53). The length of the line connecting the two is designed to be equal to or slightly larger than the inner diameter of the outer pipe (11, 41), according to any one of claims 5 to 7. Signal device. 9. Signal device according to claim 8, characterized in that the acquisition plate (21, 51) is made of a spring-elastic material.