ZA200409577B - Detonator with onboard electronics Mechanically connected to ignition element - Google Patents
Detonator with onboard electronics Mechanically connected to ignition element Download PDFInfo
- Publication number
- ZA200409577B ZA200409577B ZA200409577A ZA200409577A ZA200409577B ZA 200409577 B ZA200409577 B ZA 200409577B ZA 200409577 A ZA200409577 A ZA 200409577A ZA 200409577 A ZA200409577 A ZA 200409577A ZA 200409577 B ZA200409577 B ZA 200409577B
- Authority
- ZA
- South Africa
- Prior art keywords
- ignition
- detonator
- electronics
- plug
- ignition element
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000002360 explosive Substances 0.000 description 6
- 238000005422 blasting Methods 0.000 description 4
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- GPUADMRJQVPIAS-QCVDVZFFSA-M cerivastatin sodium Chemical compound [Na+].COCC1=C(C(C)C)N=C(C(C)C)C(\C=C\[C@@H](O)C[C@@H](O)CC([O-])=O)=C1C1=CC=C(F)C=C1 GPUADMRJQVPIAS-QCVDVZFFSA-M 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- KRTSDMXIXPKRQR-AATRIKPKSA-N monocrotophos Chemical compound CNC(=O)\C=C(/C)OP(=O)(OC)OC KRTSDMXIXPKRQR-AATRIKPKSA-N 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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
- F42B3/103—Mounting initiator heads in initiators; Sealing-plugs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Air Bags (AREA)
Description
,. ‘Woo3100343 PCI/IBO3/01968
SPECIFICATION
DETONATOR WITH ONBOARD ELECTRONICS MECHANICALLY CONNECTED TO
IGNITION ELEMEENT
BACKGROUND OF THE I NVENTION
[000] The present invention relates to pyrotechnic detonators, and more particularly, to a detonator having onboard electronics and an ignition element that are mechanically connected to each other.
[0002] The efficient use of explosives in mining operations and the demolition of structures often requires that many charges be placed in a predetermined pattern and detonated in a timed sequence. In general, timed detonatiorm can be accomplished by detonators that use pyrotechnic delays, sequential-type blasting machines, and electronically programmalole detonators. Some examples of detonators that have onboard electronics, i.e., electronics contained within the detonator itself, for processing an ignition signal from, e.g., a blasting machine, are described in U.S. Patent Nos. 6,173,651, 6,085,659, 6,079,332, 5,602,360, 5,460,093, 4,863, 170, 4,819,560, 4,130,558, and 4,712,477, the disclosur es of which are hereby incorporated by reference herein.
[0003] Such detonators involve soldered connections between the ’ ignition element of the detonator to th e onboard electronics,
. WG 03/100343 PCT/IB03/01968
EE
FEE
2 mechanical connector assembly includes an insulation displacement connector. 7. The electro-explosive device of claim 6, wherein said electro-explosive devi<e is a mining or blasting detonator. 8. The electro-explosive device of claim 6, wherein said ignition element includes a glass-to-metal header having a sealed feedthrough . 9. The electro-explosive devices of claim 6, wherein said electronics comprise a circwit board that includes electronic components for processing an ignition signal. 10. The electro-explosive device of claim 9, wherein said mechanical connector assembly is soldered to said circuit board at one or more through-board contacts. 11. The ignition subassembly including any new and inventive integer or combination of integers, substantially as herein described. 12. The ignition subassembly according to the invention, as hereinbefore generally described. 13. The ignition subassembly as specifically described with reference to or as illustrat.ed in the accompanying drawings.
AMENDED SHEET
DETALLED DESCRIPTION OF A PREFERRED EMBODIMENT! ) [0005] Referring to Figs. 1-3, a detonator utilizing an . embodiment of the present invention is shown. Referrimg to Fig. 1, an ignition subassembly 8 is placed inside of a shell 40 that may contain a mprimary charge 36 and a base charge 38 loaded into its closed end. (A detonator shell is typically a metal cylinder 6 to 8 mm. in diameter and from 60-100 mm. in length).
Subassembly 8 «an then be secured in place in the shell 40, such as by placing an elastomeric plug or the like (see elas tomeric plug 46 and cramp 47 in Figs. 5 and 6) in the open end of the shell and crimping the shell 40 to the plug, or other suitable method. Subassembly 8 may have a body portion formed of an encapsulation 31 and is preferably formed to snugly fit within the shell 40, pereferably with features such as ridges ox other protuberances f ormed to dampen vibrations to which the detonator may be subjected, generally in accordance with the teachings of
U.S. Patent No. 6,079,332. Some relevant teachings regarding ' The present description incorporates by reference in full the disclosures of the following copending applications file=d herewith: “DETOINATOR UTILIZING FEATURES OF AUTOMOTIVE AI RBAG
INITIATORS,” by John J. Walsh, David M. Forman, Abrar A.
Tirmizi, and Gloria Vawter (Express Mail No. EU124494952 (Ss), “STANDALONE IGNITION SUBASSEMBLY FOR DETONATORS,” by Joh.n J. . Walsh, David M. Forman, Abrar A. Tirmizi, and Gloria Vaw ter, (Express Mail No. EU124495286US), “DETONATOR WITH AN IGN ITION
ELEMENT HAVING A TRANSISTOR-TYPE SEALED FEEDTHROUGH,” by David 3 M. Forman and John H. Oldham (Express Mail No. EU1244952 72US), each of which applications is assigned to the assignee of the present application.
1, 'W003/100343 PCT/1B03/01968 encapsulation are also set forth in U.S. Patent Nos. 6,079,332 and 4,869,170. ] [0006] A header-based, or automotive airbag iniwiator-style, igrition element 28 is shown in the embodiment depicted in the
Figures, but a detonator according to the presen t invention may include any kind of suitable ignition element (e .g., matchhead- type). U.S. Patent Nos. 6,274,252, 5,709,724, 5_639,986, 5,602,359, 5,596,163, 5,404,263, 5,140,906, and 3,971,320 are also hereby incorporated by reference herein for their disclosure concerning the construction of ignition elements based on a glass-to-metal sealed header feedthrough, including the types of pins commonly used.
[0007] As shown in Fig. 2, ignition element 28 ircludes a header assembly with a sealed electrical feedthrough, comprising an eyelet 10 (preferably stainless steel), insulator glass 14 (preferably a glass such as a sodasilicate, e.g., 9010, that is chosen to form a compression seal with the eyelet and center pin, or less preferably a matched seal), a center pin 18 (preferably iron/nickel alloy), a ground pin 20, &nd an igniter wire 12 (preferably a low energy igniter wire with: a diameter of to 20 microns). The ignition element 28 further preferably includes a charge can 26 that is preferably metall ic and . hermetically sealed to the eyelet at circumferenti al through- weld 16, with an ignition charge 30 contained betw een the can 26 and upper surface of the header, in tight contact with igniter ' wire 12. An insulator cup 27 may preferably be attached around ) the can 26 so that, except for female connectors 52 that protrude from the input end of the subassembly, the entire outer surface of ignition subassembly 8 consists of insulating material, thus providing electrical isolation and vibration and environmental protectior to the components within until such time as the subassembly is placed in the detonator shell.
[0008] Turning again to Fig. 1, it can be seen that a circuit board 24 and electronic components 25 are provided within ignition subassembly 8, to provide a means of triggering ignition of the ignition element based on the processing of an electrical ignition signal from a blasting machine or the like that supplies power and commands to the detonator. Such electronic components are well-known and preferably include means for imparting a programmable period of delay to the : - ignition, means for ESD and RF protection, et cetera. (Another preferred alternative is the use of an application-specific integrated circuit). Circuit board 24 and electronic components 25 are preferably encapsulated together in encapsulation 31, and connected to female connesctors 52 and to plug and crimp connectors 50 at contacts 22 through soldering or other suitable . connection.
TL 'W003/100343 PCT/IB03/01968
[0009] Suitable plug and crimp connectors 50 that may be purchased off the shelf are suitable for use in arm embodiment of } the present invention like that depicted. Thus, a fter the plug and crimp connectors 50 are attached to the circuit board 24 (or other electronics), pins 18 and 20 of ignition sub assembly 28 are inserted within the openings of connectors 50, and & crimping tool is used to securely crimp the connectors 50 te pins 18 and 20. Virtually any contact pin (of appropriate size) designed for use with a header is suitable for use with conrmectors 50.
After the plug and crimp connection has been made, ignition _ Subassembly 8 can be completed by the provision of encapsulation 31 around the circuit board, electronics, plug and crimp cornectors, pins, and bottom of the ignition subassemblies. [©010] Alternately to a plug and crimp connection, a standard off-the-shelf “Insulation Displacement Connection” (IDC) can be m ade, with or without insulation sheathing on the p ins. IDCs: may be soldered during circuit board assembly in comventional fashion. The pins 18 and 20 of ignition subassemblsy 28 can then be inserted into an IDC and secured. [oot] It should be noted that although the Figures depict embodiments including electronic components that receive, process, and deliver an ignition signal, such an igraition signal . may alternately be received, processed, and deliveresd by a number of other well-known non-electronic or partly- electronic
. WG 03/100343 PCT/IB03/01968
EEE
. A means, such as throu gh the use of a shock tube to deliver an ignition signal to a piezoelectric device, column fuse delays, et cetera. It is not ed that the foregoing detailed description of certa in embodiments herein does not imply that such alternate embodiments are not within the scope of the invention.
[0012] A preferred embodiment of a detonator having an ignition element and onboard electronics that are mechanically connect ed together, and many of its attendant advantages, has thus been disclosed. It will be apparent, however, that various changes may be made in the form, construction, and ar rangement of the parts without departing from the spirit and scope of the invention, the form hereinbefore described being merely a preferred or exemplary embodiment thereof. Therefore, the invention is not to be restricted or limited except in accordance with the following claims. "Comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or rmore other features, integers, steps or components or groups thereof. 7
AMENDED SHEET
Claims (20)
1. An ignition subassembly for use in a detonator, comprising an ignition element and electronics for processing an igmition signal, said electronics being mechanically cormnected to said ignition element.
2. The ignition subassembly of claim 1, wherein the mechanical comnection between said ignition element and said electronics includes a plug and crimp connec tion.
3. Thee ignition subassembly of claim 1, wherein the mechanical connection between said ignition element and said ele ctronics includes an insulation displacement connection.
4. The ignition subassembly of claim 1, wherein said electronics include a circuit board having two ends, one of the ends of said circuit board being mechanically connected to s=said ignition element.
5. The ignition subassembly of claim 1, wherein said ignition element includes a glass-to-metal header havi ng a sealed feedthrough.
.
6. The ignition subassembly of claim 2, further w«womprising two plugger and crimp connectors, wherein said ignition element
_ ©. 'WO003/100343 PC171BU3/01968 includes two electrode pins that mate with said plug and crimp connectors.
7. A detonator comprisimg: a) an ignition elemert; b) electronics for processing an ignition signal; and, c) a mechanical conne=ctor assembly between said ignition element and said e lectronics, said connector mechanically conne<ting said ignition element to said electronics.
8. The detonator of clairm 7, wherein said mechanical connector assembly includes a plug and crimp connector.
9. The detonator of claimm 7, wherein said mechanical connector assembly includes an insulation displacement connector.
10. The detonator of claim 7, wherein said ignition element includes a glass-to-me=tal header having a sealed feedthrough.
11. The detonator of claim 7, wherein said electronics comprise a circuit board that includes electronic components for processing an ignition signal.
©. WO003/100343 PCT/IB03/(®1968
12. The detonator of claim 11, wherein said mechanical connector assembly is soldered to said circuit board at one . or more through -board contacts.
13. A method of making an ignition subassembly for use in a detonator, compxising the following steps: a) providing an ignition element suitable for initiat ing the detonatox; b) providing electronics for processing an ignition signal that is intended to trigger said ignition element; c) providing a mechanical connector assembly comprisimg a
. male portion and a female portion; d) incorporating or attaching said male portion of sai.d connector assembly to cone of said ignition element or said electron ics; e) incorporating or attaching said female portion of said connector ass embly to the other of said ignition el ement and said elec tronics; and, f) mechanically connecting together said male and fema le portions of said connector assembly.
14. The method of claim 13, wherein step c¢) includes the step of providing at least one plug and crimp connector.
To «WO 03/100343 PCT/IB03/01968
15. The method of claim 13, whereir step c¢) includes the step of providing at least one insulation displacement } connector.
16. The method of claim 13, wherein step a) includes the step of providing a glass-to-metal header having a sealed feedthrough, and wherein step d) includes the step of providing said header with a gr ound pin protruding away from said header, and the step of sealing a center pin in said header so as to form said sealed feedthrough and so as to protrude away from said header.
17. The method of claim 16, wherein step e) includes the step of attaching two plug and crimp connectors to said : electronics, and wherein step f3 comprises the step of pushing said pins into said plug and crimp connectors and’ crimping said plug and crimp cornectors to said pins.
18. The method of claim 13, wherein step b) comprises the step of providing a circuit board including electronic components for processing an igraition signal.
19. The method of claim 18, wherein step e) comprises the step : of soldering two plug and crimp connectors to said circuit board at through-board contacts.
20. The method of claim 17, further comprising the step of substantially encapsulating said electronics, plug and . crimp connectors, and pins.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/158,677 US20030221578A1 (en) | 2002-05-29 | 2002-05-29 | Detonator with onboard electronics mechanically connected to ignition element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200409577B true ZA200409577B (en) | 2006-06-28 |
Family
ID=29582732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200409577A ZA200409577B (en) | 2002-05-29 | 2004-11-26 | Detonator with onboard electronics Mechanically connected to ignition element |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20030221578A1 (en) |
| EP (1) | EP1509742A1 (en) |
| AU (1) | AU2003228015A1 (en) |
| WO (1) | WO2003100343A1 (en) |
| ZA (1) | ZA200409577B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2741091C (en) | 2008-10-24 | 2017-01-17 | Battelle Memorial Institute | Electronic detonator system |
| US7946466B1 (en) * | 2009-12-07 | 2011-05-24 | Continental Industries, Inc. | Alternative ignition source system for an exothermic reaction mold device |
| US7975900B2 (en) * | 2009-12-07 | 2011-07-12 | Continental Industries, Inc. | Ignition source system for an exothermic reaction mold device |
| CA2802888C (en) * | 2010-06-18 | 2018-08-21 | Battelle Memorial Institute | Non-energetics based detonator |
| MX2018014668A (en) * | 2016-06-03 | 2019-02-28 | Hubbell Inc | Tools for use in confined spaces. |
| WO2019095098A1 (en) * | 2017-11-14 | 2019-05-23 | 四川桑莱特智能电气设备股份有限公司 | Exothermic welding device and exothermic welding method |
| HUE058671T2 (en) * | 2019-12-19 | 2022-09-28 | Schott Ag | Metal fixing material feedthrough, method for the production and uses thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2965033A (en) * | 1956-10-19 | 1960-12-20 | Hercules Powder Co Ltd | Blasting cap assembly |
| US3971320A (en) * | 1974-04-05 | 1976-07-27 | Ici United States Inc. | Electric initiator |
| DE8432097U1 (en) * | 1984-11-02 | 1986-07-17 | Dynamit Nobel Ag, 5210 Troisdorf | Electronic time detonator |
| DE9017665U1 (en) * | 1990-11-22 | 1991-08-08 | Temic Bayern-Chemie Airbag Gmbh, 84544 Aschau | Base body for an ignition device |
| US5140906A (en) * | 1991-11-05 | 1992-08-25 | Ici Americas, Inc. | Airbag igniter having double glass seal |
| JP2700100B2 (en) * | 1993-05-28 | 1998-01-19 | 日本工機株式会社 | Igniter |
| US5616045A (en) * | 1995-07-14 | 1997-04-01 | Augat Inc. | Squib connector for automotive air bag assembly |
| KR19990071967A (en) * | 1995-12-06 | 1999-09-27 | 리차드 스티븐 크니본 | Electronic explosion starter |
| DE19610799C1 (en) * | 1996-03-19 | 1997-09-04 | Siemens Ag | Ignition device for triggering a restraint in a motor vehicle |
| US6070531A (en) * | 1997-07-22 | 2000-06-06 | Autoliv Asp, Inc. | Application specific integrated circuit package and initiator employing same |
| DE19962590B4 (en) * | 1999-01-08 | 2013-01-10 | Orica Explosives Technology Pty. Ltd. | Control module for tripping units for the initiation of pyrotechnic elements |
| DE50110428D1 (en) * | 2000-03-28 | 2006-08-24 | Hirschmann Automotive Gmbh | Ignition device for a safety system |
-
2002
- 2002-05-29 US US10/158,677 patent/US20030221578A1/en not_active Abandoned
-
2003
- 2003-05-22 EP EP03725483A patent/EP1509742A1/en not_active Withdrawn
- 2003-05-22 WO PCT/IB2003/001968 patent/WO2003100343A1/en not_active Application Discontinuation
- 2003-05-22 AU AU2003228015A patent/AU2003228015A1/en not_active Abandoned
-
2004
- 2004-11-26 ZA ZA200409577A patent/ZA200409577B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP1509742A1 (en) | 2005-03-02 |
| US20030221578A1 (en) | 2003-12-04 |
| WO2003100343A1 (en) | 2003-12-04 |
| AU2003228015A1 (en) | 2003-12-12 |
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