Pyrotechnic device

Abstract

Pyrotechnic device (1), in particular smoke cartridge, with - at least one receiving unit (3) in which a pyrotechnic agent (42) is received, and - at least one ignition system (32) with at least one first ignition system (5) for igniting the pyrotechnic agent (42), characterized in that the ignition system (32) has at least one second ignition system (7) independent of the first ignition system (5), which is also designed for igniting pyrotechnic agent (42).

Description

[0001] The invention relates to a pyrotechnic device, in particular a smoke cartridge, according to the preamble of claim 1.

[0002] Such devices are known from the field of pyrotechnics and serve to generate visible or thermal effects, such as smoke, light, sound, or heat, through the combustion or reaction of a pyrotechnic agent. These devices are used in civilian applications, for example, in fireworks or technical signaling devices, as well as in military and police applications for combat simulation, irritant distribution, or signaling. These devices are typically equipped with a single ignition system, which can be electrical, mechanical, or thermal. However, this has the disadvantage that the user is predetermined to use a specific ignition method. If this ignition system fails or if activation is not possible under the given conditions, such as a power outage or exposure to moisture, the pyrotechnic device cannot be activated.This limits operational reliability and reduces flexibility in practical use.

[0003] The invention is based on the objective of providing a pyrotechnic device that can be reliably ignited in variable operating situations and has increased functional redundancy without significantly impairing its design simplicity.

[0004] The features of claim 1 serve to solve this problem.

[0005] The invention advantageously provides that the ignition system comprises at least a second ignition system, independent of the first, which is also designed to ignite the pyrotechnic agent. In this way, the device can be used with various triggering mechanisms. Depending on the situation, the user can, for example, use remote electrical ignition or manual ignition via a friction pull. This increases reliability, as an alternative ignition method is available if one system fails. Furthermore, the device is flexibly applicable in various scenarios, such as by fire departments, police, the military, or in civilian settings.

[0006] The first and second ignition systems can be assigned different ignition principles. This further increases the independence of the systems and achieves technical decoupling.

[0007] The different ignition principles can be electrical, mechanical, or thermal. This allows for a flexible combination of proven ignition technologies, depending on the application and safety requirements.

[0008] The first ignition system can be electrical, and the second ignition system mechanical or thermal. This allows, for example, the combination of a modern remote ignition with a robust manual alternative.

[0009] At least one of the recording units can have a metallic outer housing. This results in a mechanically stable and weatherproof design.

[0010] An inner sleeve, made primarily of cardboard, can be arranged within the metallic outer casing. This allows for an economical and thermally efficient design of the components.

[0011] A thermally insulating layer and a thermally insulating base can be provided between the inner sleeve and the outer casing. This reduces unwanted heating or fire hazards for the outer casing.

[0012] The thermally insulating layer and / or the thermally insulating floor can consist of mineral insulating materials, in particular ceramic paper, rock wool, glass wool, clay powder, terracotta powder, mica powder, diatomaceous earth or zeolite. These materials are characterized by high temperature resistance and low weight.

[0013] The inner sleeve holds the pyrotechnic agent. This allows for clean and flexible interchangeability between the pyrotechnic compositions and the surrounding structure.

[0014] The device can have an inner cover to house the ignition system and an outer cover for a watertight seal, with the inner and outer covers being connected to the outer housing and together forming a cavity. This design protects the ignition system from external influences such as moisture or mechanical stress.

[0015] The cavity between the inner and outer covers can accommodate electric ignition wires as a primary ignition system and a mechanically triggered inner pull, particularly a friction ignition pull, as a secondary ignition system. This allows both systems to be integrated in a space-saving and protected manner.

[0016] The electrical ignition system can include a firing pin that can be connected to an external or integrated power source via at least two electrical leads. This design is compatible with common electrical triggering devices.

[0017] The mechanical ignition system can include a friction pull that, when pulled out, is guided along a friction surface, with friction between the pull and the friction surface igniting the pyrotechnic agent. This solution operates independently of power sources and is simple and reliable to use.

[0018] In the following, exemplary embodiments of the invention are explained in more detail with reference to the drawings.

[0019] They show schematically: Fig. 1. A sectional view of the ignition system Fig. 2 a sectional view of the pyrotechnic device

[0020] Fig. Figure 1 shows an embodiment of an ignition system 32 for a pyrotechnic device 1, in particular a smoke cartridge. The illustration is a sectional view, showing the individual components and their functional integration.

[0021] The housing 4 forms the central structure of the ignition system and is designed as a cylindrical protective tube. A cover 2 is provided in the upper part of the housing 4, serving as a mechanical cover and mounting point for the ignition systems. Two independent ignition systems 5 and 7 are integrated: The first ignition system 5 is designed as an electrical ignition system and comprises an ignition pellet 14, which can be connected to an external or integrated power source via electrical leads 18. The ignition pellet 14 is located in a cavity within the housing 4 and is in direct contact with the igniter cord 10, which runs through the housing 4 to the pyrotechnic agent.

[0022] The second ignition system 7 is designed as a mechanical ignition system and consists of a friction pull 20, which is activated by a pulling motion. The friction pull 20 is guided along a friction surface 16, which is attached to the cover 2. A friction element 12 is attached to the lower end of the friction pull 20 and is moved along the friction surface 16 when it is pulled out, thereby igniting the device through friction. This ignites the igniter cord 10, which in turn ignites the pyrotechnic agent.

[0023] The ignition cord 10 is positioned so that it can be ignited by both the first ignition system 5, which is designed as an electrical ignition system, and the second ignition system 7, which is designed as a mechanical ignition system. The integration of both ignition systems allows for variable triggering of the pyrotechnic agent, either electrically or mechanically, depending on the application.

[0024] As shown, several ignition perforations 6 can be radially arranged in the casing, serving as passage openings. Barrier membranes 8 are arranged over the ignition perforations 6, acting as a thermal and mechanical barrier against the ingress of the pyrotechnic agent into the cavity of the casing.

[0025] Furthermore, as shown, a barrier membrane 8 can be arranged at the bottom of the ignition system 32. This, as well as the barrier membranes 8 over the ignition perforations 6, serve as a protective measure against the ingress of the pyrotechnic agent into the cavity of the housing. The inner sleeve 38, which is not shown in the figure but is shown in Fig. Figure 2 shows the absorption of the pyrotechnic agent 42.

[0026] The entire arrangement is designed to ensure safe and flexible ignition of the pyrotechnic agent, with the two ignition systems operating independently. The mechanical and electrical triggering mechanisms are clearly separated and accessible via their own activation elements (friction pull 20, electrical leads 18). The protective measures provided by barrier membranes 8 and the arrangement of the ignition perforations 6 ensure controlled and reliable ignition under various environmental conditions.

[0027] Fig. Figure 2 shows an embodiment of the pyrotechnic device 1, in particular a smoke cartridge, with an integrated ignition system 32. The device is shown as a cylindrical system, with the individual components visible in a sectional view.

[0028] The outer housing 24 forms the outer boundary of the device and is made of a metallic material that ensures mechanical protection and structural integrity. A receiving unit 3 is arranged inside the outer housing 24.

[0029] In the upper part of the device is an outer cover 22, which serves to seal the device 1 watertight. Directly below it is an inner cover 26, which serves to house the ignition system 32. Between the outer cover 22 and the inner cover 26 is a cavity 28, in which the electrical conductors 18 and other components of the ignition system 32 are housed. Mechanical trigger elements, which function as part of a mechanical ignition system, are also visible in the area of ​​the cavity 28.

[0030] The ignition system 32 is positioned centrally in the upper area of ​​the device 1 and includes both, as in relation to Fig. Figure 1 explains a first and a second ignition system 5, 7. The electrical conductors 18 run from the outside through the cavity 28 and are connected to the first ignition system 5, which is designed as an electrical ignition system. The mechanical triggering elements for the second ignition system are not shown in the Fig. 2 shown. However, they are also arranged in cavity 28 and allow for alternative ignition by means of mechanical activation.

[0031] The receiving unit 3 is arranged inside the outer housing 24 and has at least one inner sleeve 38, which is preferably made of cardboard. The inner sleeve 38 serves as a container for the pyrotechnic agent 42, which is positioned centrally within the device. A thermally insulating layer 36 is provided between the inner sleeve 38 and the outer housing 24. This layer can consist of mineral insulating materials, such as ceramic paper, rock wool, glass wool, clay powder, terracotta powder, mica powder, diatomaceous earth, or zeolite. A thermally insulating base 40, which can also be made of mineral insulating materials and forms an additional thermal barrier, is arranged at the lower end of the inner sleeve 38.

[0032] The device is designed so that the pyrotechnic agent 42 can be ignited either electrically via the conductors 18 or mechanically via the triggering elements 30. The ignition system 32 has a modular design and allows for flexible activation depending on the application. The thermally insulating layer 36 and the base 40 ensure that the thermal energy remains controlled during ignition and that no unwanted heat transfer to the outer casing 24 occurs.

[0033] The integration of the outer cover 22 and inner cover 26 with the outer housing 24 ensures that the device is sealed watertight and that the internal components are protected from environmental influences. The cavity 28 serves as a receiving area for the ignition systems and enables safe and reliable activation of the pyrotechnic agent 42.

[0034] In summary, it shows Fig.2 A pyrotechnic device with a combined ignition system, comprising a metallic outer casing 24, an inner sleeve 38 for receiving the pyrotechnic agent 42, a thermally insulating layer 36 and a thermally insulating base 40, as well as a modular ignition system 32, which integrates at least two ignition methods. The covers 22 and 26, together with the outer casing 24, form a cavity 28 for receiving and protecting the ignition systems.

Claims

[1] Pyrotechnical device (1), in particular smoke cartridge, with - at least one receiving unit (3) in which a pyrotechnic agent (42) is received, and - at least one ignition system (32) with at least one first ignition system (5) for igniting the pyrotechnic agent (42), characterized by that the ignition system (32) has at least a second ignition system (7) independent of the first ignition system (5), which is also designed to ignite pyrotechnic agent (42). [2] Device according to claim 1, characterized by , that the first and second ignition systems (5, 7) are assigned to different ignition principles. [3] Device according to claim 2, characterized by that the different ignition principles can be electrical, mechanical or thermal ignition principles. [4] Device according to any one of claims 1 to 3, characterized by, that the first ignition system (5) is electrical and the second ignition system (7) is mechanical or thermal. [5] Device according to any one of claims 1 to 4, characterized by , that at least one receiving unit (3) has a metallic outer casing (24). [6] Device according to claim 4, characterized by , that an inner sleeve (38) is arranged inside the metallic outer casing (24), which is made in particular of cardboard or metal. [7] Device according to claim 6, characterized by , that a thermally insulating layer (36) and a thermally insulating base (40) are provided between the inner sleeve (38) and the outer casing (24). [8] Device according to claim 7, characterized by, that the thermally insulating layer (36) and / or the thermally insulating floor (40) consist of mineral insulating materials, in particular ceramic paper, rock wool, glass wool, clay powder, terracotta powder, mica powder, diatomaceous earth or zeolite. [9] Device according to any one of claims 6 to 8, characterized by , that the inner sleeve (38) receives the pyrotechnic agent (42). [10] Device (1) according to any of the preceding claims, characterized by , that the device (1) has an inner cover (26) for receiving the ignition system (32) and an outer cover (22) for watertight sealing, wherein the inner and outer covers (26, 22) are connected to the outer housing (24) and together form a cavity (28). [11] Device according to claim 10, characterized by, that the cavity (28) between inner cover (26) and outer cover (22) is provided with electrical ignition wires (18) as a first ignition system (5) and with a mechanically triggerable inner pull, in particular a friction ignition pull, as a second ignition system (7). [12] Device according to any one of the preceding claims, characterized by , that the electrical ignition system designed as the first ignition system comprises an ignition pellet (14) which can be connected to an external or integrated power source via at least two electrical lines (18). [13] Device according to any one of the preceding claims, characterized by , that the mechanical ignition system designed as a second ignition system comprises a friction pull (20) with a friction set (12) which is guided along a friction surface (16) when being pulled out, wherein an initial ignition for the pyrotechnic agent is generated by friction between the friction set (12) and the friction surface (16). [14] Device according to any one of the preceding claims, characterized by , that a igniter cord (10) is provided which can be ignited by the first ignition system (5) or second ignition system (7) and thus ignites the pyrotechnic agent.

Images