EP0119458A2 - Allumeur électrique - Google Patents

Allumeur électrique Download PDF

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Publication number
EP0119458A2
EP0119458A2 EP84101461A EP84101461A EP0119458A2 EP 0119458 A2 EP0119458 A2 EP 0119458A2 EP 84101461 A EP84101461 A EP 84101461A EP 84101461 A EP84101461 A EP 84101461A EP 0119458 A2 EP0119458 A2 EP 0119458A2
Authority
EP
European Patent Office
Prior art keywords
ignition
contact
carrier element
pole piece
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84101461A
Other languages
German (de)
English (en)
Other versions
EP0119458A3 (fr
Inventor
Hellmut Bendler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huels Troisdorf AG
Original Assignee
Huels Troisdorf AG
Dynamit Nobel AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huels Troisdorf AG, Dynamit Nobel AG filed Critical Huels Troisdorf AG
Publication of EP0119458A2 publication Critical patent/EP0119458A2/fr
Publication of EP0119458A3 publication Critical patent/EP0119458A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/103—Mounting initiator heads in initiators; Sealing-plugs

Definitions

  • the invention relates to an electrical ignition device according to the preamble of claim 1.
  • ignition and ignition means with ignition devices which have two independent ignition resistances. These are attached as glow wire bridges either on separate supports or on a support element made of electrically non-conductive material. The ignition is in these ignition devices by e.g. glowing wires triggered. From DE-PS 20 20 016 electrical ignition means are known with metal layer contacts attached to an insulating body and an ignition bridge consisting of tantalum or tantalum nitride and applied in a very thin layer.
  • DE-PS 26 54 087 describes electrical ignition means with at least two externally accessible contact pins, between which the electrical voltage is applied for the ignition process.
  • the invention has for its object to provide a safe ignition device in a multi-pole version, which in particular has a very high reliability of the ignition in a small size.
  • the ignition takes place via at least two separate ignition resistors, which e.g. according to DE-PS 20 20 016 can be applied reliably and extremely precisely to a carrier element made of electrically non-conductive material using very simple methods in series production. With a small size, the two ignition resistors achieve extremely high reliability of the ignition process. It is also possible to provide a four-pole version with three ignition resistors or an even higher number of poles. In this case, a central pole or contact is preferably always provided, which is assigned to all ignition resistances, i.e. is connected to these in an electrically conductive manner, and in each case a further connection contact for each individual ignition resistor.
  • the inventive design according to claim 2 also enables the ignition limits and ignition insensitivity limits of the ignition resistors via their elec interpret the resistance in different ways. As a result, different ignition conditions can be set in the case of an ignition means by identifying the contacts which are connected to the ignition resistors and are accessible from the outside. This is particularly advantageous if currents of different strengths are available for different applications. Due to the configuration according to the invention with two or more ignition resistors, diverse requirements can be taken into account.
  • the housing of the ignition means according to the invention can be made from an electrically non-conductive material.
  • the contacts to the pole piece and to the ignition resistors are usually designed as pins. However, it is also possible to provide recesses in the pole piece or in the insulation surrounding the pole piece, into which recesses the corresponding contact pins of the electrical leads are firmly pressed during assembly of the ignition means.
  • the contact connections attached to the further contacts assigned to the ignition resistors are preferably extrusion-coated with an electrically non-conductive plastic during assembly.
  • the contact tongues of the contact connections which bear against the outer electrode surfaces of the carrier element are bent over during the assembly of the ignition means in order to make contact with the electrode surfaces. Permanent contact between outer electrode surfaces and contact tongues is e.g. by axial pressure with a by e.g. reached flanged support ring held, but the contact tongues can also be attached in other ways, e.g. by soldering or welding.
  • an electrical ignition device is shown in a multi-pole version, in which the contacts are designed as pins.
  • a housing 1 which is preferably made of non-corrosive metals or metal alloys such as brass, copper or aluminum, there are mutually opposite contact connections 3, which are electrically insulated from the housing 1 by the insulation 2.
  • contact connections 3 are from the primer facing side of the pole piece 4 electrically connected to contacts 7, 7a, which are designed here as pins.
  • the contacts 7, 7a are electrically insulated from one another and from the pole piece 4 by the correspondingly lengthened insulation 8.
  • the contacts 7, 7a are electrically insulated from the housing 1 by the analogously extended insulation 2.
  • the pole piece has on its side facing away from the ignition set a contact 9 which is designed as a pin and which is in turn electrically insulated from the contacts 7, 7a and the contact connections 3 by the insulation 8.
  • the contact connections 3 are electrically conductively connected to the carrier element 5 by contact tongues 18 angled through 90 ° during assembly, the connection being established, for example, by soldering, welding or pressing.
  • Fig. 3 illustrates the arrangement of the electrically conductive components on the carrier element 5.
  • the two separate ignition resistors 10 are applied to the carrier element. These are electrically conductively connected to outer and inner electrode surfaces 11, 12.
  • the outer and inner electrode surfaces of one ignition resistor 10 are electrically insulated from the electrode surfaces of the other ignition resistor by the metal-coating-free strip-shaped surfaces 20.
  • the contact between the inner electrode surfaces 12 and the pole piece 4 shown in FIG. 1 is explained with reference to FIG. 4.
  • the two ignition resistors 10 and the outer and inner electrode surfaces 11, 12 are attached in an electrically conductive connection.
  • From the inner electrode surfaces 12 leads in a bore 6 of the support member via 13 in electrically conductive Ver connection to the bottom 9a of the support member.
  • the underside 9a of the carrier element 5 is in electrically conductive connection to the contact 9 via a support surface 17 (see FIG. 1) of the pole piece 4.
  • the contacting by means of the contact tongues 18 shown in FIG. 1 is explained in more detail with reference to FIG. 5.
  • the outer electrode surfaces 11 are connected in an electrically conductive manner to the contact tongues 18 in the form of a ring segment.
  • the type of connection was carried out in the description of FIG. 1.
  • the contacts 7, 7a are contacted via the contact connections 3 (not shown in FIG. 5).
  • the remaining parts shown in Fig. 5 have already been described and are provided with the same reference numerals as before. 5, the insulation 2 is shown in one piece. It corresponds to the insulation 2, 8 in Fig. 1.
  • the insulation 2 and 8 are preferably in a known manner made of electrically non-conductive plastic, for example made of polyethylene.
  • the ignition charge 15 is pressed onto the carrier element 5 with the ignition resistors 10, which are not shown in FIG. 1.
  • the primer is enclosed by a support ring 14, which rests on the insulation 2 and the contact tongues 18 via an insulating ring 19.
  • the support ring 14 is held in the housing 1, for example by the flanged edge of the housing.
  • the ignition charge is on its free end face with an additional cover 16 protected by painting, such as a tin! i plated lead foil or paper.
  • the primer 15 consists, for example, of an igniter, such as lead trinitroresorcinate, and optionally for reinforcing an ignition mixture made of flame or gas-generating substances. In the case of such a composition, the primer is first pressed onto the carrier element 5, then the primer mixture onto the primer.
  • the electrical internal resistance of the ignition means is measured separately for each ignition resistance between contacts 9 and 7 or 9 and 7a on the finished ignition means. It depends on the dimensioning of the ignition resistors 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP84101461A 1983-03-11 1984-02-13 Allumeur électrique Withdrawn EP0119458A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3308635 1983-03-11
DE19833308635 DE3308635A1 (de) 1983-03-11 1983-03-11 Elektrisches zuendmittel

Publications (2)

Publication Number Publication Date
EP0119458A2 true EP0119458A2 (fr) 1984-09-26
EP0119458A3 EP0119458A3 (fr) 1985-05-02

Family

ID=6193146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101461A Withdrawn EP0119458A3 (fr) 1983-03-11 1984-02-13 Allumeur électrique

Country Status (2)

Country Link
EP (1) EP0119458A3 (fr)
DE (1) DE3308635A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772909A1 (fr) * 1997-12-22 1999-06-25 Livbag Snc Initiateur electro-pyrotechnique a trois connexions electriques
WO2002057705A3 (fr) * 2001-01-22 2002-10-24 Smi Technology Pty Ltd Amorce de detonateur electronique
WO2017071896A1 (fr) * 2015-10-29 2017-05-04 Auto-Kabel Management Gmbh Élément d'allumage pour substance pyrotechnique et système d'allumage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842917C1 (en) * 1988-12-21 1989-11-30 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De Fuze device for detonating a pyrotechnic charge
US5113764A (en) * 1989-09-25 1992-05-19 Olin Corporation Semiconductor bridge (SCB) packaging system
US5029529A (en) * 1989-09-25 1991-07-09 Olin Corporation Semiconductor bridge (SCB) packaging system
US6820556B1 (en) * 2001-11-21 2004-11-23 Daicel Chemical Industries, Ltd. Initiator assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059576A (en) * 1958-09-26 1962-10-23 Conax Corp Electrically fired detonator
US3407732A (en) * 1966-03-08 1968-10-29 Przybylik Roza Electrical detonator
FR2388245A1 (fr) * 1977-04-19 1978-11-17 Bofors Ab Dispositif de declenchement d'un allumeur electrique a retard
FR2438820A1 (fr) * 1978-10-13 1980-05-09 France Etat Dispositif electrique d'allumage d'une substance pyrotechnique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059576A (en) * 1958-09-26 1962-10-23 Conax Corp Electrically fired detonator
US3407732A (en) * 1966-03-08 1968-10-29 Przybylik Roza Electrical detonator
FR2388245A1 (fr) * 1977-04-19 1978-11-17 Bofors Ab Dispositif de declenchement d'un allumeur electrique a retard
FR2438820A1 (fr) * 1978-10-13 1980-05-09 France Etat Dispositif electrique d'allumage d'une substance pyrotechnique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772909A1 (fr) * 1997-12-22 1999-06-25 Livbag Snc Initiateur electro-pyrotechnique a trois connexions electriques
EP0926461A1 (fr) * 1997-12-22 1999-06-30 Livbag S.N.C. Initiateur électro-pyrotechnique à trois connexions électriques
WO2002057705A3 (fr) * 2001-01-22 2002-10-24 Smi Technology Pty Ltd Amorce de detonateur electronique
WO2017071896A1 (fr) * 2015-10-29 2017-05-04 Auto-Kabel Management Gmbh Élément d'allumage pour substance pyrotechnique et système d'allumage

Also Published As

Publication number Publication date
EP0119458A3 (fr) 1985-05-02
DE3308635A1 (de) 1984-09-13

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Effective date: 19860507

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18W Application withdrawn

Withdrawal date: 19860916

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HUELS TROISDORF AKTIENGESELLSCHAFT

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BENDLER, HELLMUT