EP0235115A1 - Fusée de proximité pour la mise à feu d'une charge creuse, destinée en particulier à une mine - Google Patents

Fusée de proximité pour la mise à feu d'une charge creuse, destinée en particulier à une mine Download PDF

Info

Publication number
EP0235115A1
EP0235115A1 EP87890004A EP87890004A EP0235115A1 EP 0235115 A1 EP0235115 A1 EP 0235115A1 EP 87890004 A EP87890004 A EP 87890004A EP 87890004 A EP87890004 A EP 87890004A EP 0235115 A1 EP0235115 A1 EP 0235115A1
Authority
EP
European Patent Office
Prior art keywords
resonant circuit
ferrite ring
solenoid
target
proximity switch
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.)
Granted
Application number
EP87890004A
Other languages
German (de)
English (en)
Other versions
EP0235115B1 (fr
Inventor
Reinhard Zierler
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.)
Intertechnik Techn Produktionen GmbH
Original Assignee
Intertechnik Techn Produktionen GmbH
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 Intertechnik Techn Produktionen GmbH filed Critical Intertechnik Techn Produktionen GmbH
Publication of EP0235115A1 publication Critical patent/EP0235115A1/fr
Application granted granted Critical
Publication of EP0235115B1 publication Critical patent/EP0235115B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C13/00—Proximity fuzes; Fuzes for remote detonation
    • F42C13/003—Proximity fuzes; Fuzes for remote detonation operated by variations in electrostatic field
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B23/00—Land mines ; Land torpedoes
    • F42B23/04—Land mines ; Land torpedoes anti-vehicle, e.g. anti-aircraft or anti tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C13/00—Proximity fuzes; Fuzes for remote detonation
    • F42C13/06—Proximity fuzes; Fuzes for remote detonation operated by sound waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C13/00—Proximity fuzes; Fuzes for remote detonation
    • F42C13/08—Proximity fuzes; Fuzes for remote detonation operated by variations in magnetic field
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F42C14/08—Mechanical fuzes characterised by the ammunition class or type for land mines

Definitions

  • the invention relates to a proximity switch for igniting a shaped charge, in particular for a mine, using an electrical resonant circuit with a solenoid.
  • proximity switches for detonating the explosive charge, these proximity switches being controlled by sound waves or changes in a magnetic field.
  • Proximity switches of particularly simple design and reliable function are obtained on the basis of resonant circuits which are detuned by the approaching vehicle and trigger the mine to ignite.
  • Such proximity switches based on electrical resonant circuits cannot, however, be used to ignite shaped charges because the metallic hollow body in front of the explosive charge causes excessive damping of the resonant circuit due to the eddy currents induced in the hollow body.
  • the invention is therefore based on the object to avoid this deficiency and to provide a proximity switch for igniting a shaped charge on the basis of an electrical resonant circuit, the responsiveness of which is not impaired by the hollow metal body of the shaped charge.
  • the invention solves this problem in that the upstream of the metallic hollow body of the shaped charge ver with an electrostatic shield see solenoid of the resonant circuit on its side facing away from the target with a coaxial ferrite ring is connected and electrically isolated.
  • the field lines of the electromagnetic field excited by the cylindrical coil penetrate the ferrite ring essentially radially due to the magnetic resistance of the ferrite ring, which is substantially lower than air, so that a disturbing field propagation in the area of the metallic hollow body of the shaped charge is prevented. Therefore, no eddy currents will be induced in the hollow metal body of the shaped charge.
  • the ferrite ring can be produced from a material of high permeability and a comparatively large specific ohmic resistance, the eddy currents induced by the coil field in the ferrite core can be reduced to an allowable level without endangering the functionality of the proximity switch.
  • the proximity switch should only respond when the target is at a comparatively small distance from the shaped charge, and a corresponding spreading of the coil field in the direction of the target by the ferrite ring on the side of the coil remote from the target cannot be prevented.
  • the ferrite ring can be connected to the cylindrical coil of the resonant circuit in various ways, since the only thing that is important is that the ferrite ring is assigned to the cylindrical coil so that it cannot move. Particularly advantageous design conditions are ensured, however, in that the ferrite ring is connected to the cylindrical coil of the resonant circuit by an electrically insulating adhesive layer.
  • This adhesive not only makes other connecting means which possibly influence the formation of the coil field superfluous, but also provides effective electrical insulation between the solenoid or its electrostatic shielding and the ferrite ring.
  • the solenoid with the ferrite ring can first be inserted into a plastic housing, which is then filled with the potting compound, which preferably consists of a permanently elastic material is formed.
  • Fig. 1 is a shaped charge with a solenoid of a proximity switch according to the invention in a schematic axial section and Fig. 2 shows the cross section of the solenoid of the resonant circuit of the proximity switch on a larger scale.
  • the shaped charge shown consists of a plastic housing 1, which is filled with explosive 2 and is terminated on the target side by a metallic hollow body 3, usually in the form of a hollow cone.
  • the housing 1 forms an annular receptacle 4 for the solenoid 5 of a resonant circuit, not shown, of a proximity switch for igniting the shaped charge.
  • This solenoid 5 is with an electrostatic Provide shielding 6 and connected on its side facing away from the target with a coaxial ferrite ring 7 fixed against displacement.
  • An adhesive layer 8 is used to connect the ferrite ring 7 and the solenoid 5, which at the same time provides electrical insulation between the ferrite ring 7 and the electrostatic shield 6 or the solenoid 5.
  • the solenoid 5 connected to the ferrite ring 7 of the proximity switch is embedded within the annular receptacle 4 of the plastic housing 1 in a permanently elastic casting compound 9, which ensures that the solenoid 5 is held well with the ferrite ring 7.
  • the ferrite ring 7 Since the ferrite ring 7 has a very small magnetic resistance to air, the field lines of the electromagnetic field excited by the solenoid 5 of the resonant circuit close via this ferrite ring 7, so that the metallic hollow body 3 of the shaped charge lies in an essentially field-free space. In the metallic hollow body 3, therefore, no eddy currents which dampen the resonant circuit in an impermissible manner can be induced.
  • the induction of eddy currents in the ferrite ring 7 can be limited to an admissible value without difficulty because the material for the ferrite ring 7 can have a high permeability and a comparatively large specific ohmic resistance, which prevents the induction of larger eddy currents and thus the damping of the resonant circuit in an acceptable area.
  • a sufficiently large coil field can thus form in the direction of the target, which is changed by the target when the target approaches, so that the associated detuning of the resonant circuit of the proximity switch for igniting the shaped charge can be exploited.
  • proximity switches according to the invention can be used with particular advantage in the case of shaped charges for mines, the invention is of course not limited to limited this use case. Missiles, grenades and projectiles with shaped charges can also be provided with such proximity switches if the shaped charge needs to be detonated at a certain distance from the target.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
EP19870890004 1986-01-28 1987-01-14 Fusée de proximité pour la mise à feu d'une charge creuse, destinée en particulier à une mine Expired EP0235115B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT189/86 1986-01-28
AT18986A AT384298B (de) 1986-01-28 1986-01-28 Annaeherungsschalter zum zuenden einer hohlladung, insbesondere fuer eine mine

Publications (2)

Publication Number Publication Date
EP0235115A1 true EP0235115A1 (fr) 1987-09-02
EP0235115B1 EP0235115B1 (fr) 1989-10-04

Family

ID=3483840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870890004 Expired EP0235115B1 (fr) 1986-01-28 1987-01-14 Fusée de proximité pour la mise à feu d'une charge creuse, destinée en particulier à une mine

Country Status (5)

Country Link
EP (1) EP0235115B1 (fr)
AT (1) AT384298B (fr)
DE (1) DE3760696D1 (fr)
ES (1) ES2011303B3 (fr)
GR (1) GR3000196T3 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR864811A (fr) * 1939-12-21 1941-05-06 Centre Nat Rech Scient Fusée sonore
FR1317270A (fr) * 1961-12-26 1963-02-08 Mine à pose rapide
US3252418A (en) * 1963-07-22 1966-05-24 C R I F Sa Magnetic mine
US3347165A (en) * 1958-10-28 1967-10-17 Cletus A Kessler Flux guide for a magnetic fuze
FR2071823A5 (fr) * 1969-11-04 1971-09-17 Messerschmitt Boelkow Blohm
FR2086528A5 (fr) * 1970-04-01 1971-12-31 Clausin Pierre
US3653351A (en) * 1969-07-16 1972-04-04 Us Navy Magnetic detector
FR2358635A1 (fr) * 1976-07-15 1978-02-10 Haut Rhin Manufacture Machines Detecteur de proximite pour projectile explosif a charge creuse ou formee
US4206707A (en) * 1977-11-22 1980-06-10 General Dynamics Corportation Electromagnetic hazard suppression techniques

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR864811A (fr) * 1939-12-21 1941-05-06 Centre Nat Rech Scient Fusée sonore
US3347165A (en) * 1958-10-28 1967-10-17 Cletus A Kessler Flux guide for a magnetic fuze
FR1317270A (fr) * 1961-12-26 1963-02-08 Mine à pose rapide
US3252418A (en) * 1963-07-22 1966-05-24 C R I F Sa Magnetic mine
US3653351A (en) * 1969-07-16 1972-04-04 Us Navy Magnetic detector
FR2071823A5 (fr) * 1969-11-04 1971-09-17 Messerschmitt Boelkow Blohm
FR2086528A5 (fr) * 1970-04-01 1971-12-31 Clausin Pierre
FR2358635A1 (fr) * 1976-07-15 1978-02-10 Haut Rhin Manufacture Machines Detecteur de proximite pour projectile explosif a charge creuse ou formee
US4206707A (en) * 1977-11-22 1980-06-10 General Dynamics Corportation Electromagnetic hazard suppression techniques

Also Published As

Publication number Publication date
EP0235115B1 (fr) 1989-10-04
ES2011303B3 (es) 1990-01-01
ATA18986A (de) 1987-03-15
DE3760696D1 (en) 1989-11-09
AT384298B (de) 1987-10-27
GR3000196T3 (en) 1990-12-31

Similar Documents

Publication Publication Date Title
DE2304952A1 (de) Pyrotechnische vorrichtung mit sicherung gegen ungewolltes detonieren
CH635673A5 (de) Elektrisches anzuendelement.
EP0150823B1 (fr) Allumeur électrique
DE102005031673A1 (de) Initialsprengstofffreies Zündsystem
DE3119924A1 (de) Elektrischer zuender
DE2455903C2 (de) Elektrozünder
DE1901271A1 (de) Induktive Verbindung fuer ein elektrisches Zuendsystem einer Pulver- oder Sprengladung
DE10057773B4 (de) Näherungsschalter
DE3338936C2 (fr)
EP0235115B1 (fr) Fusée de proximité pour la mise à feu d'une charge creuse, destinée en particulier à une mine
DE3812958A1 (de) Elektrisches anzuendmittel
DE2734169A1 (de) Vorrichtung fuer kontaktlose uebertragung elektrischer energie, insbesondere fuer pyrotechnische zuender
EP0378963A1 (fr) Composant d'éclateur pour montage blindé
EP0142780B1 (fr) Amorce électrique
DE102004008013B4 (de) Zündspule
DE4214033A1 (de) Elektrisches zuendelement mit soll-entladungsstrecke
DE3315186C2 (de) Abstandszünder für Panzerabwehr-Geschosse
DE10225384C1 (de) Zündvorrichtung für den Gasgenerator eines Insassen-Rückhaltesystems in einem Kraftfahrzeug
DE2821529A1 (de) Elektromagnetischer naeherungszuender
DE4033478C1 (en) Electrically triggered lighter or igniter - has safety slidable or rotatable sleeve short circuiting electrical connections until application of working system
DE102014204866A1 (de) Aufprallsensor mit triboelektrischem Effekt mit Zonen unterschiedlicher Elastizität für ein Kraftfahrzeug
DE3217033A1 (de) Detektoreinrichtung fuer metallische objekte
DE3211666C2 (fr)
DE1763635A1 (de) Zuendkapsel
DE7806953U1 (de) Zuendvorrichtung fuer flugkoerper

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19880202

17Q First examination report despatched

Effective date: 19890313

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB GR IT LI LU NL SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3760696

Country of ref document: DE

Date of ref document: 19891109

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO CONS. BREVETTUALE S.R.L.

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3000196

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19950101

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950103

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950112

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950116

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950120

Year of fee payment: 9

Ref country code: CH

Payment date: 19950120

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19950125

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19950126

Year of fee payment: 9

EAL Se: european patent in force in sweden

Ref document number: 87890004.2

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950131

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950731

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960114

Ref country code: GB

Effective date: 19960114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960115

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960131

Ref country code: CH

Effective date: 19960131

Ref country code: BE

Effective date: 19960131

BERE Be: lapsed

Owner name: INTERTECHNIK TECHN. PRODUKTIONEN G.M.B.H.

Effective date: 19960131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19960731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960801

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960114

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960930

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3000196

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19961001

EUG Se: european patent has lapsed

Ref document number: 87890004.2

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990405

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050114