DE2366343C2 - Electrically ignitable ignition device - Google Patents

Description

sealing capsule ensures gas tightness even when very high pressures occur. The arrangement of an opposite pole piece on the side of the primer opposite the pole piece and the primer or capsule laterally Insulating elements which insulate towards the jacket ensure that the ignition current actually flows through the primer flows and not about the edge of the primer along directly from the tip to the A coat.

The configuration according to the invention thus ensures reliable ignition and ensures gas tightness

For this purpose 2 sheets of drawings 15

30th

45

SO

55

Claims (6)

1 2 In the following description Ausfüh- patent claims: approximately examples of the invention explained in detail with reference to the drawings 1. Electrically ignitable ignition device with one fig. 1 an ignition device in axial section,
nem cylindrical housing (16), which has a pole piece 5 Fig. La a modified embodiment of (17), an ignition device (26) laterally surrounding an ignition device shown in Fig. 1 with only partially jacket (18, 18 ') and the pole piece (17) opposite this illustration, the jacket (18, 18 ') insulating elements (23) Fi g. 2 shows a representation corresponding to FIG. 1 receives, characterized by an alternative embodiment, and see ignition charge (26) and pole piece (17) arranged, io F i g. 3 another embodiment in a corresponding electrically conductive capsule (24, 24 '), further, the corresponding representation. The capsule (24, 24 ') is isolated from the jacket (18, 18'). 1 shown ignition device lating insulating elements (25, 25 ', 25 ") and on, the housing 16 has an electrical pole piece 17, the ignition charge (26) on the pole piece (17) which is removed from the housing 16 by insulating elements 23, the Opposite side seated opposite pole piece 15 - it is surrounded on the sides, completely insulated. (27,31,33). elements 23, which are made of insulating material with good 2. Ignition device according to claim 1, marked mechanical resistance and heat-resistant by being made adjacent to the opposite, also isolate the pole body 17 pole piece (27) axially extending flame opening opposite the jacket 18, which is inside the housing (28,29,32). 20 16 is attached in such a way that it receives a capsule 24 3. Ignition device according to claim 2, can be marked. This is made of electrically conductive, metallizeichnet produced by a material between the primer (26) and is at its bottom side and opposite pole piece (27,31,33) on the other hand with the upper part of the pole piece 17 directly in ordered retaining disc (29 ', 34). Contact, while it is through insulating means 25 of the same kind 4. Ignition device according to claim 2 or 3, there being 25 like the insulating elements 23 with respect to the jacket 18 characterized in that the opposite pole piece (27) is insulated as a cylinder surrounded by the flame opening. Inside the capsule 24, an ignition charge 26 is off is formed is a material with good electrical conductivity. 5. Ignition device according to claim 2 or 3, counter-pole piece 27 of the jacket 18 is in contact with the outer one, characterized in that the counter-pole piece is formed as a central part of the electrical ignition charge 26 in close one piece with the jacket (18, 18 ') and has lateral flame openings 28.
the ignition _{charge V} 26) facing the annular nose (30). The pole piece of the ignition element according to FIG. la is forms is compared to that of the ignition element of 6. Ignition device according to claim 2 or 3, that F i g. 1, designed differently: The pole piece is here with characterized in that the counter pole piece (31) 35 is formed in one piece with the jacket 18 but has a than used in the jacket (18 '), with a central flame opening 29. The pole piece has a Flame opening (32) forming bore and an annular nose 30, which faces the primer 26 Zwidem Ignition charge (26) facing the ring nose see ignition charge 26 and flame opening 29 is one ne disc (31) is formed, retaining disc 29 'is provided, which the primer 26 40 in the event of stresses occurring during operation Place In the case of the FIG. 2, compared to that in FIG. 1 shown embodiment The invention relates to an electrically ignitable example, with regard to the housing 16 no differences ignition device according to the preamble of the main 45 to be determined. The pole piece 17, however, has a stronger one Saying. emphasized, axially protruding part. However, the shape of such an electrically ignitable ignition device of the jacket 18 'differs considerably from device is known from GB-PS 11 68 684 In this the embodiment shown in Fig. 1, namely If the ignition charge rests directly on the pole piece, the jacket 18 'does not have insulating elements above the ignition charge the pole piece from the housing and the one below the primer in the area of the pole piece isolate the jacket designed as an intermediate ring. 17 an inwardly extending annular projection The disadvantage here is that at high pressures, in particular 18 ", on which the primer is supported while it is at the other when used for large projectiles, one of the exemplary embodiments described above Gas tightness is not guaranteed. Another disadvantage is that it rests on the pole piece 17, of course Hg that the ignition current in the embodiment after the interposition of electrically insulating elements 25, GB-PS 11 68 684 along the insulating element immediately 25 '. The opposite pole piece 31 is here by a plate bar via the intermediate ring to the housing 31 which can form the flame opening 32 with one, a safe one. An annular nose 33 is provided in the central bore to ensure ignition flow through the primer is therefore not ensured, the plate 31 is in direct / n contact with the The invention is therefore based on the object of providing an ignition charge 26 which is surrounded by the capsule ^ ignition device of the type mentioned above corresponds to In the embodiment of FIG ^ f create; at''der ^ a ^ pich & efZünduhg ^ it'absoluter W the design of the mantle part is essentially the ^ J • iGas tightness is guaranteed * '·' * in E ig. la shown form. The retaining disk 34, f S According to the invention, this object is achieved by the here made of a material with good electrical conductivity 'characterizing part of the main claim is given 65, but extends here over the entire area NEN features are solved, the subclaims provide before the ignition charge 26. Partial configurations of the ignition device according to the invention away. . device ensures the ignition charge down