DE3121627A1 - MINE - Google Patents

Abstract

1. Mine (1) with a casing (2) containing an explosive and a detonator (3) and a cap (4) containing an actuating member (5) for the detonator (3) and a blocking member (10) cooperating therewith, which can be pivoted by means of an arming lever (13) from the blocked position into a release position (13') for the actuating member (5), the arming lever (13) having a ring (11) positioned concentrically with respect to the cap axis, whose end faces are slidingly mounted on the cap, which acts on the blocking member (10) and whose bearing gaps (20) are sealed by O-seals inserted in the end faces, characterized in that each O-seal (19) has a circumferential notch (21) and is inserted in such a way that the notch is open towards the side.

Description

DR. ING. HANS LICHTI - Dl P ^- LVI NO. "FTEI ΝΈΙ * XfCHTI

DI PL. "PHYS. DR. JOST LEMPERT 3 1? 1 677

PATE N TA N WA LT E

D-7500 KARLSRUH E 41 (CRÖTZI NCEN) ■ DURLAC H ER STR. 31 (HIGH-RISE) TELEPHONE (0721) 4β5ΙΙ

May 29, 1981 6055/81-Lj

Industrie-Werke Karlsruhe Augsburg AG
Gartenstrasse 21 '
D-7500 Karlsruhe 1

mine

The invention relates to a mine, containing an explosive and detonator Housing and a cap in which an actuator for the igniter and a locking member cooperating with this is arranged, which by means of a focus lever from the locked position into a release position is pivotable for the actuator, the focus lever being a for Has a concentrically arranged cap axis, with its end faces slidingly mounted on the cap, acting on the locking member ring, whose bearing gaps are sealed by O-rings inserted in its end faces. ■

Mines of this structure are known. While most of the mine was encapsulated and as a result is not subject to external influences, the focus lever and its mounting are a problematic component. because it is the only movable part of the mine that is accessible from the outside.

—Β— 6055/81-Lj

The mobility of the focus lever sets a bearing and this in turn a seal ahead. Extreme requirements are placed on storage and sealing. ·

First of all, the focus lever may only take a certain amount of torque out of the Assurance can be moved into focus. This limit is supposed to so lie that on the focus lever by the person who is responsible for arming the Mine is turned off, no excessive torque has to be applied. The torque must therefore be a certain size on the one hand, but also on the other lie within a certain tolerance range. These sizes are also allowed do not change after long periods of storage.

Both the storage and the seal must be further arranged so that will not interfere with the function and the required operating torque at extreme temperature differences between about -30 ⁰ C and +50 ⁰ C or change only insignificantly. Finally, the seal must ensure tightness against dust and water, possibly also sea water, which in turn requires a certain compression of the seal. Again, however, this compression must not be too great, since otherwise the torque to be applied to the focus lever will be too great. .

Attempts have already been made to use the O-rings previously used for sealing by other sealing elements, for example by quad rings or Like. To replace. However, satisfactory results could not be achieved with this will.

The invention is based on the object of the round cord rings used hitherto to improve in the sense of the aforementioned requirements.

This object is achieved according to the invention in that each O-ring has a circumferential notch and is inserted so that the notch is open to the side. The notch is preferably designed as a V-groove which, according to a further feature of the invention, is arranged in such a way that that the center axis of the O-ring lies within the groove.

With the training according to the invention, the following advantages are achieved: The O-ring, which, as before, is made of a comparatively hard rubber, ζ- B. Perbunan, is given an additional elastic by the notch Resilience. As a result, the compression can initially be increased and thus the tightness in the area of the mounting of the ring can be improved. Practical Experiments have shown that with the simplest structure an absolutely dust-tight and watertight storage has been achieved. Furthermore can adjust the compression without difficulty so that the desired actuation torque for the focus lever can be adhered to, even in the case of extremely low temperatures, without the tightness suffered as a result.

This training offers very special advantages when assembling the mine cap. While it has so far been due to the non-eliminable Manufacturing tolerances was necessary over each individual O-ring To measure its entire diameter and to pair it with corresponding rings of the focus lever, this is in the training according to the invention no longer necessary. This is essentially due to what is possible here larger compression. In addition, O-rings with a slightly larger cross-section can now be used with the same structural dimensions. which additionally improves the tightness.

According to a further preferred embodiment of the invention, the V-groove from the outer vertex of the O-ring, it opens so to the outside. This not only facilitates the production of the O-ring, but has the further advantage that when it occurs

6055 / 81- ly

a pressure wave that penetrates the bearing gap from the outside, the O-ring additionally pressed against the sealing surfaces by widening the V-groove, thus increasing the tightness.

The invention is described below on the basis of an exemplary embodiment shown in the drawing.
In the drawing show:

FIG. 1 shows an axial section of the mine in a reduced representation;

Figure 2 is an axial section of the cap; ·

Figure 3 is a plan view of the cap according to Figure 1 and

FIG. 4 shows a view of the detail X in FIG.

The overall designated 1 mine has a housing 2, which the Includes explosives and a detonator 3. In its center is the housing 2 closed on the top by a cap 4 in which an actuator 5 is arranged for the igniter 3. The "actuator 5 is involved a partially spherical head 6 of the igniter 3 together. The closer structure the mine is irrelevant in the present context and otherwise known.

In Figures 2 and 3, the cap 4 can be seen in more detail. It essentially consists from a cylindrical housing ring 7 and a cover plate 8 .. Inside of the housing ring 7 sits the actuator 5, which under the action of a

-ß ~ - 6055/81-Lj

Spring 9 stands. By locking members in the form of bolts 10, the actuator in the left part! the upper position shown in Figure 2, the safest! lung, held. The bolts 10 in turn are in the Sperrsteüung by fixed a ring 11 acting on it on the outside, the several axially parallel Has recesses 12 into which the latches 10 retreat under the action of the spring 9 can, so that the actuator 5 in the right in Figure 2 Position shown, the focus can get out of the detonator is operated when pressure is applied from above.

The sharpening lever 13, which is integral with it, engages on the ring 11 (see FIG. 3) approximately radially, which is given by the solid line in FIG. 3 Said position can be pivoted into the position 13 'shown in dash-dotted lines, the focusing position, the ring 11 being the one on the right in FIG Half of the given position. The focus lever 13 runs on one de cap on a part of its circumference surrounding resilient support bracket 14, which has a stop ring 15 between the two positions of the focus lever 13. About one end 16 of the support bracket 15, the sharpness lever can can only be moved in the direction of focus if previously the support bracket is pressed down by pressure on the plate 17.

The ring 11 is between a collar 17 on the housing ring 7 of the cap 4 and the underside of the cover plate 8 mounted with its end faces. Warehousing is shown in more detail in FIG. The ring 11 has on both of its end faces each has an annular groove 18, in which an O-ring 19 is inserted, the bearing space 20 between cover plate 8 and ring 11 or between this and the federal government 17 seals. The pressing takes place in such a way that the Cover plate 8 is screwed onto the housing ring 7.

6055/81-Lj

As can be seen from FIG. 4, the O-ring 19 has a notch 21 provided in the form of a V-groove which is provided on the outer periphery of the O-ring 19. The groove is so deep into the O-ring 19 that that their base 22 is beyond the central axis 23 of the O-ring 19 is located.

Blank page

Claims (4)

DR. ING. HANS LlCHTI ■ DIPL.-ING. "HEINER Xi'CHTI DIPL.-PHYS. DR. JOST LEMPERT 3 1? 1 R 77 PATENTAN1WaLTE. D-750o karlsruhe 4j (grotzinc en) · durlac h er str. 31 (high-rise) TELEPHONE (0721) 48511 29 May 1981 6055/81-Lj Indus tr ie-Werke Karlsruhe Augsburg AG Gartenstrasse 21 D-7500 Karlsruhe 1 Claims 1.) Mine with a housing containing explosives and detonators and a cap in which an actuating member for the detonator and a locking member interacting therewith is arranged, which can be pivoted from the locking position into a release position for the actuating member by means of a focus lever the sharpening lever has a ring which is arranged concentrically to the cap axis, with its end faces slidingly mounted on the cap and acting on the locking member, the bearing gaps of which are sealed by round cord rings inserted in the end faces,
characterized, that each round cord ring (19) has a circumferential notch (21) and is inserted so that the notch is open to the side. 2. Mine according to claim 1, characterized in that the notch as V-Only (21) is formed. - 2 - 6055/81-Lj 3121 (327 3. Mine according to claim 1 or 2, characterized in that the V-groove (21) is designed so that the center axis (23) of the O-ring (19) lies within the groove (21). 4. Mine according to one of claims 1 to 3, characterized in that the V-groove (21) starts from the outer apex line of the O-ring (19). . ■ '