EP0520360A1 - Bestandteil eines elektronischen Detonators und Methode zum Zusammenbau eines elektronischen Detonators - Google Patents

Bestandteil eines elektronischen Detonators und Methode zum Zusammenbau eines elektronischen Detonators Download PDF

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Publication number
EP0520360A1
EP0520360A1 EP92110529A EP92110529A EP0520360A1 EP 0520360 A1 EP0520360 A1 EP 0520360A1 EP 92110529 A EP92110529 A EP 92110529A EP 92110529 A EP92110529 A EP 92110529A EP 0520360 A1 EP0520360 A1 EP 0520360A1
Authority
EP
European Patent Office
Prior art keywords
substrate
enclosure
energy dissipating
dissipating device
electronic detonator
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Withdrawn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
EP92110529A
Other languages
English (en)
French (fr)
Inventor
Christo Andre Beukes
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.)
Expert Explosives Pty Ltd
Original Assignee
Expert Explosives Pty Ltd
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 Expert Explosives Pty Ltd filed Critical Expert Explosives Pty Ltd
Publication of EP0520360A1 publication Critical patent/EP0520360A1/de
Withdrawn legal-status Critical Current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
    • F42B3/12—Bridge initiators
    • F42B3/121—Initiators with incorporated integrated circuit
    • 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
    • F42B3/195—Manufacture

Definitions

  • This invention relates generally to an electronic detonator component and is particularly concerned with a method of assembling an electronic detonator.
  • a detonator firing element which includes an energy dissipation device and electronic control circuitry using integrated circuit techniques.
  • the energy dissipating device As the energy dissipating device is relatively small it dissipates a small amount of energy, when actuated. This energy must be effectively transferred to a primary explosive to initiate detonation. The primary explosive must therefore be in good thermal contact with the energy dissipating device.
  • a detonator of the aforementioned kind is described for example in the specification of U.K. patent No.2190730.
  • the invention is concerned in the first instance with a method of assembling an electronic detonator, which is easy to implement, and which ensures that the primary explosive is brought into intimate contact with the energy dissipating device.
  • the invention provides a method of assembling an electronic detonator which includes an energy dissipating device formed on a substrate, wherein the energy dissipating device is located in an enclosure, a primary explosive is placed in the enclosure, and a force is applied to the primary explosive to compress the primary explosive into intimate contact with the energy dissipating device, the direction of the force which is applied being at any angle other than perpendicular relatively to the surface of the substrate in the region of the energy dissipating device.
  • the direction of the force which is applied to the primary explosive is substantially parallel to the surface of the substrate in the region of the energy dissipating device.
  • the method may include the step of providing isolating means around the substrate within the enclosure to isolate a portion of the substrate with the energy dissipating device, on one side of the isolating means, from a portion of the substrate on an opposing side of the isolating means.
  • the invention also extends to an electronic detonator component which includes an enclosure, a substrate which is located at least partially inside the enclosure, and an energy dissipating device which is formed on the substrate and which is located inside the enclosure, the surface of the substrate in the region of the energy dissipating device opposing an inner wall surface of the enclosure.
  • the surface of the substrate, or of the inner wall, or both surfaces may be planar or curved, or have any other shape. These surfaces may be substantially parallel to one another, or extend generally in the same direction, or one surface may be relatively inclined to the other surface.
  • the surface of the substrate in the region of the energy dissipating device is substantially parallel to an opposing inner wall surface of the enclosure.
  • the enclosure may have a mouth or opening and the energy dissipating device may be positioned inside the enclosure so that the surface of the substrate in the region of the energy dissipating device is substantially at right angles to a plane in which the opening or mouth lies.
  • the enclosure may be of any appropriate shape but preferably is tubular.
  • the substrate may be rectangular in outline and extend longitudinally inside the enclosure.
  • the substrate may extend from a first inner wall surface of the enclosure to an opposing inner wall surface.
  • the substrate preferably extends diametrically across the enclosure.
  • Isolating means may be provided around the substrate in contact with an opposing inner circumferential wall surface of the enclosure and isolating a portion of the substrate with the energy dissipating device on one side of the isolating means from a portion of the substrate on an opposing side of the isolating means.
  • Primary explosive may be located in a cavity which is formed between a surface of the substrate in the region of the energy dissipating device and an opposing inner wall surface of the enclosure.
  • the cavity may be bounded at least partly by portion of the said isolating means.
  • FIGS. 1 and 2 of the accompanying drawings illustrate a detonator component 10 which includes a tubular housing or enclosure 12, a substrate 14 on or in which is formed, or to which attached, integrated circuitry 16 and an energy dissipating device 18, and an isolating member 20.
  • a detonator component 10 which includes a tubular housing or enclosure 12, a substrate 14 on or in which is formed, or to which attached, integrated circuitry 16 and an energy dissipating device 18, and an isolating member 20.
  • the integrated circuit 16 can be formed in any appropriate way using techniques which are conventional and known per se. For this reason this aspect of the invention is not further described hereinafter.
  • the energy dissipating device 18 may be formed in any one of a number of ways and may for example include thick film bridges, thin film bridges, bridges formed by printing techniques, etching, laser cutting, sputtering, or vacuum deposition, and film bridges.
  • the energy dissipating device is shown in the accompanying drawings as being formed together with an integrated electronic circuit 16, and this is the preferred form of construction, it is to be understood that this type of construction is given only by way of example and the scope of the invention is not limited to an electronic detonator component which is based on the use of an integrated electronic circuit nor on the use of an energy dissipating device which is formed by integrated circuit techniques.
  • the substrate 14 is in the form of a printed circuit board of rectangular outline.
  • the width of the board is slightly less than the internal diameter of the tubular enclosure 12 and consequently when the board is inserted into the enclosure, as shown in the drawings, it extends longitudinally substantially for the length of the enclosure and diametrically across the interior of the enclosure abutting diametrically opposed inner wall surfaces of the enclosure.
  • the surface of the substrate, in the region of the energy dissipating device 18, is approximately at right angles to the plane which the mouth or opening of the tubular enclosure, adjacent the device 18, occupies.
  • the isolating member 20 is bonded to the substrate 14 and extends circumferentially around it tightly engaging with an inner circumferential wall surface of the enclosure.
  • the isolating means therefore effectively separates that portion of the substrate which carries the energy dissipating device 18 from the remainder of the substrate, designated 22, on an opposing side of the isolating means.
  • the portion 22 of the substrate carries contact pads 24 by means of which a cable 26 can be connected to the integrated circuit.
  • a shroud 30 engages with the cable and an outer surface of the tubular enclosure. This is shown schematically only for any other means may be provided to protect the connections of the cable to the substrate. For example it is common practice to use a can 36 for this purpose, in which event the tubular enclosure is completely located inside the can and the mouth of the can is then crimped closed, on to the cable.
  • a primary explosive 32 is placed in a cavity 34 which is defined by the portion of the substrate which is above the isolating member 20, in the drawings, by the adjacent surface of the isolating member, and by a portion of the inner wall of the tubular housing.
  • the primary explosive 32 is compressed into the cavity by means of a press pin 40 under a force F which is directed as shown in Figure 1 i.e. in a direction which is parallel to the longitudinal axis of the tubular housing.
  • the primary explosive is in powder form and, within the body of the primary explosive, laterally directed compressive forces arise which urge the primary explosive into intimate contact with the energy dissipating device 18.
  • the construction of the electronic detonator component has the advantage that the isolating member 20 separates the lower portion 22 of the substrate from the primary explosive.
  • the components and the circuitry on or connected to the lower portion 22 are therefore not exposed to the effects of the primary explosive, nor to the compressive force of the press pin acting with force F on the explosive.
  • the orientation of the substrate 14 which is longitudinally aligned inside the tubular housing and which spans the diameter of the housing means that ample space is available to make connections to the substrate and where necessary to secure components to the substrate. This must be contrasted with the situation which pertains when the substrate extends diametrically across the tubular housing and, in effect, has a surface area equal to the cross sectional area of the housing.
  • the substrate is oriented within the tubular enclosure as shown in the drawings.
  • the substrate carries the energy dissipating device 18 it follows that the surface of the substrate, adjacent the energy dissipating device, lies in the general plane of the entire substrate. Access to the cavity 34 is limited and it is therefore not normally possible to apply force to the primary explosive, in a direction which is perpendicular to the surface of the substrate adjacent the energy dissipating device, in order to force the explosive into intimate contact with the energy dissipating device.
  • the isolating component 20 may be formed by any one of a number of techniques and, for example, may be over-moulded, cast with resin, press fitted, formed in the same way as glass to metal sealed transistor headers are formed, or in any other equivalent manner.
  • a detonator can 36 which contains a secondary explosive 38 is attached to the tubular enclosure 12.
  • the can 36 is engaged with the outer side of the enclosure.
  • the cable 26 which is attached to the substrate may be part of a cable harness in a sequential blasting system. This aspect of the invention is known per se and consequently is not further described herein.
  • Figures 1 and 2 make use of substrate 14 which may be rigid.
  • the substrate, designated 50 is flexible and thus can be curved, and carries integral conductors 52 which replace the cable 26.
  • the circuit 16 and energy dissipating device 18, of Figures 1 and 2 are shown collectively as a component 54, in Figures 3, 4 and 5.
  • the substrate passes through an opening 56 in a wall of an enclosure 58 and then enters a hollow 60 via a mouth 62.
  • the component 54 lies against an inner wall surface of the hollow and primary explosive, not shown, is compacted into the hollow in the manner which has been described with reference to Figures 1 and 2.
  • the Figure 3 construction obviates the need for an isolating member of the kind designated 20 in Figures 1 and 2.
  • the substrate 50 passes through an isolating member 64 and lies on an inclined surface 66 so that the component 54 is slightly inclined to the direction 68 in which a force F is applied to compress primary explosive into the hollow 60.
  • Figure 5 shows a construction wherein the flexible substrate 50 passes through an isolating member 64 and lies against, or close to, an inner wall surface of the hollow 60.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Air Bags (AREA)
EP92110529A 1991-06-26 1992-06-23 Bestandteil eines elektronischen Detonators und Methode zum Zusammenbau eines elektronischen Detonators Withdrawn EP0520360A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA914914 1991-06-26
ZA914914 1991-06-26

Publications (1)

Publication Number Publication Date
EP0520360A1 true EP0520360A1 (de) 1992-12-30

Family

ID=25580770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110529A Withdrawn EP0520360A1 (de) 1991-06-26 1992-06-23 Bestandteil eines elektronischen Detonators und Methode zum Zusammenbau eines elektronischen Detonators

Country Status (2)

Country Link
EP (1) EP0520360A1 (de)
CA (1) CA2072030A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194098A (ja) * 1992-09-11 1994-07-15 Morton Internatl Inc エアバッグ膨張装置用のプリント回路ブリッジおよびエアバッグ膨張装置
EP0717259A1 (de) * 1994-12-14 1996-06-19 Altech Industries (Pty) Limited Detonatoren
EP1030158A1 (de) * 1999-02-18 2000-08-23 Livbag SNC Elektrischer, pyrortechnischer Anzünder mit integrierter Elektronik
US6598532B2 (en) * 2001-08-14 2003-07-29 Donald G. Gerard Electric circuit for an electrically dischargeable primer
CN103090751A (zh) * 2013-02-27 2013-05-08 中国科学技术大学 内凹型变截面雷管激发装置及使用该装置的雷管
CN108317918A (zh) * 2018-03-29 2018-07-24 贵州盘江民爆有限公司 全自动电子雷管卡口、检测、赋码、激光编码生产线
CN109489508A (zh) * 2018-12-17 2019-03-19 江西国泰民爆集团股份有限公司 一种用于电子雷管自动装配的立式紧口装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945803A1 (de) * 1979-11-13 1981-05-27 Heko - Elektronik GmbH & Co KG, 2804 Lilienthal Einrichtung zum zuenden eines spreng-oder treibstoffes
US4858529A (en) * 1988-07-01 1989-08-22 The United States Of America As Represented By The Department Of Energy Spark-safe low-voltage detonator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945803A1 (de) * 1979-11-13 1981-05-27 Heko - Elektronik GmbH & Co KG, 2804 Lilienthal Einrichtung zum zuenden eines spreng-oder treibstoffes
US4858529A (en) * 1988-07-01 1989-08-22 The United States Of America As Represented By The Department Of Energy Spark-safe low-voltage detonator

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194098A (ja) * 1992-09-11 1994-07-15 Morton Internatl Inc エアバッグ膨張装置用のプリント回路ブリッジおよびエアバッグ膨張装置
EP0609605A1 (de) * 1992-09-11 1994-08-10 Morton International, Inc. Brückenzünder mit gedruckten Leiterplatten für Airbag-Aufblasgeräte
EP0717259A1 (de) * 1994-12-14 1996-06-19 Altech Industries (Pty) Limited Detonatoren
EP1030158A1 (de) * 1999-02-18 2000-08-23 Livbag SNC Elektrischer, pyrortechnischer Anzünder mit integrierter Elektronik
FR2790077A1 (fr) * 1999-02-18 2000-08-25 Livbag Snc Allumeur electro-pyrotechnique a electronique integree
US6418853B1 (en) 1999-02-18 2002-07-16 Livbag Snc Electropyrotechnic igniter with integrated electronics
US6598532B2 (en) * 2001-08-14 2003-07-29 Donald G. Gerard Electric circuit for an electrically dischargeable primer
CN103090751A (zh) * 2013-02-27 2013-05-08 中国科学技术大学 内凹型变截面雷管激发装置及使用该装置的雷管
CN108317918A (zh) * 2018-03-29 2018-07-24 贵州盘江民爆有限公司 全自动电子雷管卡口、检测、赋码、激光编码生产线
CN108317918B (zh) * 2018-03-29 2024-03-22 贵州盘江民爆有限公司 全自动电子雷管卡口、检测、赋码、激光编码生产线
CN109489508A (zh) * 2018-12-17 2019-03-19 江西国泰民爆集团股份有限公司 一种用于电子雷管自动装配的立式紧口装置
CN109489508B (zh) * 2018-12-17 2023-08-22 江西新余国泰特种化工有限责任公司 一种用于电子雷管自动装配的立式紧口装置

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Publication number Publication date
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