EP0101817A1 - Secondary winding for inductive ignition - Google Patents

Secondary winding for inductive ignition Download PDF

Info

Publication number
EP0101817A1
EP0101817A1 EP83106141A EP83106141A EP0101817A1 EP 0101817 A1 EP0101817 A1 EP 0101817A1 EP 83106141 A EP83106141 A EP 83106141A EP 83106141 A EP83106141 A EP 83106141A EP 0101817 A1 EP0101817 A1 EP 0101817A1
Authority
EP
European Patent Office
Prior art keywords
secondary coil
coils
carrier material
coil
flat coils
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
EP83106141A
Other languages
German (de)
French (fr)
Other versions
EP0101817B1 (en
Inventor
Uwe Brede
Heinz Kern
Gerhard Kordel
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 EP0101817A1 publication Critical patent/EP0101817A1/en
Application granted granted Critical
Publication of EP0101817B1 publication Critical patent/EP0101817B1/en
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
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/12—Primers; Detonators electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/58—Electric firing mechanisms
    • F41A19/63—Electric firing mechanisms having means for contactless transmission of electric energy, e.g. by induction, by sparking gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2847—Sheets; Strips
    • H01F2027/2861—Coil formed by folding a blank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S336/00—Inductor devices
    • Y10S336/02—Separable

Definitions

  • the present invention relates to igniters for igniting propellant charge powders which operate on the induction principle.
  • the invention is concerned with the secondary coils contained in these igniters and their manufacture.
  • the principle of contactless energy transmission for ignition purposes is known, for example, from DE-OS 27 34 169 and DE-OS thanks (patent application P 30 24 554.9).
  • two coil systems work together according to the transformer system.
  • the secondary coil which causes the actual ignition via a carrier element with ignition resistor and electrical connection contacts, should be as small as possible in these systems - ie the coils should have a maximum diameter of 10 mm with a total height of approximately 0.5 to 1.5 mm.
  • Such support elements with ignition resistance are for example in DE-OS 17 71 889 and DE-PS 20 20 016 described.
  • With the usual use of wound wire coils with viden individual components the production of solder joints and contact points, as well as the entire connection technology, could be carried out without any problems.
  • these known procedures cannot be applied to the manufacture of coils with small dimensions, so that the desired miniaturization of the secondary coil poses serious problems for mass production.
  • a secondary coil for an inductive igniter which is designed as a multilayer solenoid with several windings in each layer, works inductively with a primary coil according to the transformer principle and is electrically conductively connected to a carrier element with an ignition resistor.
  • This coil is characterized in that the windings lying perpendicular to the cylinder axis are in the form of separate flat coils on a folded foil-shaped carrier material, the folds of which are located between adjacent flat coils, which are insulated from one another in the area of their planar extent and only at the fold are interconnected.
  • the carrier material is preferably a high-strength, but flexible polyimide or a corresponding polyester.
  • the different winding parts are on this carrier material applied by flat coils in a manner known per se. This is done, for example, in such a way that a film made of a conductive metal, for example copper, is laminated onto both sides of the carrier film and the conductor pattern is etched out on both sides in the form of flat coils in a manner known per se.
  • the conductor pattern is arranged in such a way that the outermost turns of two flat coils, which come to lie next to one another in the fully assembled solenoid, are connected to one another at an intended fold point of the carrier material.
  • the outermost turn should be understood to mean the turn with the largest diameter in each case.
  • the innermost turn ie the turn with the smallest diameter, passes through the carrier material, so that there is also an electrically conductive transition from one flat coil to the next flat coil on the other side of the carrier material.
  • the carrier material is preferably provided at this inner transition point with recesses of corresponding diameter, which are metallized in a known manner for through-plating.
  • This arrangement of the conductor pattern in the form of flat coils on the front and back of film-shaped carrier material enables the production of the coils according to the invention in the plane.
  • the windings are applied to a film material in the above arrangement and then provided with an insulating cover layer or intermediate layer or similar insulation.
  • the film is then folded at the intended locations and the individual folded pages are pressed together and / or glued.
  • the folding is preferably meandering.
  • the folding takes place at the transition point from an outermost turn of a flat coil to the outermost turn of the next flat coil, preferably in such a way that the Turns on the next fold side come to lie on the inside of the fold.
  • the windings thus folded up in the coil are in opposite directions of rotation as right and left coil images. In this way it is possible to produce coils in which the turns of the flat coils are two adjacent. Folding sides are opposite each other. An increase in the induced voltage is thus advantageously achieved.
  • the two folding sides which form the end of the coil are not provided with a conductor pattern: the one folding side which delimits the folded solenoid on the outside becomes partial. leave it wise or completely metal-clad. This side is then intended for ground contact in the igniter. The other outermost fold side is completely freed of the metal coating except for a small inner ring in the coil axis. The remaining inner ring then serves as a connection zone for the ignition resistance of the igniter.
  • the coils according to the invention preferably have a total of 40 to 90 turns, which are distributed over preferably 4 to 8 folded carrier foils coated on both sides with flat coils.
  • the number of turns depends u. a. from the primary coil.
  • the carrier film preferably has the same geometrical shape and size as the flat coil applied thereon, which is preferably of spiral design, the spiral also being able to be modified in an elliptical or almost rectangular manner.
  • the largest diameter is that of the invention
  • Coil circumscribing circle preferably between 5 and 10 mm.
  • the height of the coil according to the invention depends on the number of folded sides and the thickness of the carrier film; it is preferably between 0.3 and 0.8 mm; but it can also be considerably larger, depending on how many folding sides with flat coils the coil according to the invention is to have.
  • a further preferred embodiment is that an oscillation circuit is formed in conjunction with the resistance of the ignition element, wherein the circuit behavior must be adapted to the field change of the transmission system to achieve optimal thermal reaction in the resistance of the ignition element to - to ensure activation of the ignition charge. It is also possible, for example, to arrange an intacting made of magnetic material to the carrier element inside the folded coil arrangement, the frequency response of which is matched to the resonance frequency of the resonant circuit.
  • the coil according to the invention and its mode of action are exemplified in a primer.
  • Figure 1 shows an embodiment with 55 turns of a total of 6 flat coils.
  • the coil arrangement which has not yet been folded can be seen in one plane, side A being the front and side B the back of the unfolded coil.
  • the carrier material 1 here has the four folded sides 2, on each of which the various flat coils 3 are depicted with their spiral turns.
  • the openings 4 of the folded sides 2 serve for through-contacting between the sides A and B.
  • the connection zone 5 for the ground contact and the connection zone 6 for the ignition resistor, not shown can be seen.
  • the Lines CC ' show the folds.
  • the number of flat coils can be determined depending on the task
  • Figure 2 shows an intermediate stage of the folded coil.
  • Figure 3 shows the arrangement of a carrier element 8 to the coil.
  • the electrical carrier element which is in contact with the folded coil package 9 or also inserted with the aid of a pin into the opening 4 of the connection zone, the ignition resistance of which is designed in the known manner as a bridge or gap, is on the one hand in the central part via a suitable electrical connection 41, for example the aforementioned Pin, contacted with the coil beginning at 6 (not shown here) and on the outer circumference 42-eg electrically connected to the coil end at 5 via an electrically conductive support body 10 and capsule 11 (see also FIG. 4).
  • a suitable electrical connection 41 for example the aforementioned Pin
  • the folded and compressed coil 9, in connection with the carrier element 8, represents a compact component that can withstand high mechanical loads and withstands, for example, later pressing pressures when charging the primer 12 of approximately 20,000 N / cm 2 .
  • Figure 4 shows an overall view of the inductive igniter.
  • the coil package 9 with the attached electrical ignition element 8 is inserted into a support body 10 and forms a mechanically fixed unit with the outer capsule 11. After an electrical check, if necessary, the inductive igniter is charged with the igniter 12.
  • the mechanical components 8 to 11 of the inductive igniter can consist of both combustible and non-combustible materials.
  • the support body 10 consists preferably of soft iron or of high-strength sintered material with ferromagnetic properties in order to improve the magnetic flux and thereby increase the induced voltage.
  • the capsule 11 is preferably made of antimagnetic (diamagnetic or paramagnetic) materials. Brass or stainless steel is preferably used here.
  • the support body 10 is made of a composite material consisting of glass fiber, octogen, ferromagnetic metal or metal oxide powder and resin as a binder, the surface having to be electrically conductive for contacting purposes.
  • the outer capsule 11 consists of the composite material glass fiber octogen and resin as a binder.
  • the inductive ignition means 13 is shown in a combustion chamber 14 in FIG.
  • the inductive igniter 13 is acted upon by an alternating magnetic field, which is applied by the primary coil 15, the coil and the ignition resistor forming a resonant circuit, the optimal voltage is induced in the secondary coil at its resonance frequency in a known manner, which is caused by the electrical resistance of the igniter element Drives ignition current, which causes a conversion into Joule heat to ignite the ignition charge 12 in the ignition means 13.
  • the propellant powder 16 is thus ignited.
  • the result is a complete implementation of all combustible parts in the combustion chamber 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

Gegenstand der vorliegenden Erfindung sind die Sekundärspulen in induktiven Anzündmitteln zur Zündung von Treibladungspulver. In diesen bekannten Anzündmitteln wirken zwei Spulensysteme nach dem Transformatorsystem miteinander, wobei die Sekundärspule möglichst klein und mit dem Anzündmittel eine kompakte Einheit bilden soll. Dies wird erfindungsgemäß dadurch ermöglicht, daß die Wicklungen der Sekundärspule in Form von Flachspulen (3) auf einem Trägermaterial (1) isoliert in der Weise angeordnet sind, daß beim Falten des Trägermaterials die einzelnen Flachspulen jeweils sich gegenüber zu liegen kommen, so daß sie eine Zylinderspule bilden. Weiterhin sind diese Flachspulen über ihre äußersten und innersten Windungen miteinander verbunden, wobei der Übergang der äußersten Windungen an der Faltung (C) zu liegen kommt und die innersten Windungen dadurch miteinander verbunden sind, daß sich die Flachspulen sowohl auf der Vorder- als auch auf der Rückseite nahezu deckungsgleich angeordnet sind und der Übergang der innersten Spulen durch das Trägermaterial hindurch durchkontaktiert ist.The present invention relates to the secondary coils in inductive ignition means for igniting propellant powder. In these known igniters, two coil systems interact with one another according to the transformer system, the secondary coil being as small as possible and forming a compact unit with the igniter. This is made possible according to the invention in that the windings of the secondary coil in the form of flat coils (3) on a carrier material (1) are arranged insulated in such a way that when the carrier material is folded, the individual flat coils come to lie opposite each other, so that they are one Form solenoid. Furthermore, these flat coils are connected to one another via their outermost and innermost turns, the transition of the outermost turns coming to lie on the fold (C) and the innermost turns being connected to one another in that the flat coils are located both on the front and on the Rear are arranged almost congruently and the transition of the innermost coils is contacted through the carrier material.

Description

Die vorliegende Erfindung behandelt Anzündmittel zur Zündung von Treibladungspulver, die nach dem Induktionsprinzip arbeiten. Insbesondere befaßt sich die Erfindung mit den in diesen Anzündmitteln enthaltenden Sekundärspulen und deren Herstellung.The present invention relates to igniters for igniting propellant charge powders which operate on the induction principle. In particular, the invention is concerned with the secondary coils contained in these igniters and their manufacture.

Das Prinzip der kontaktlosen Energieübertragung für Anzündzwecke ist z.B. aus der DE-OS 27 34 169 und der DE-OS..... (Patentanmeldung P 30 24 554.9) bekannt. In diesen Anzündsystemen wirken zwei Spulensysteme nach dem Transformatorsystem miteinander. Die Sekundärspule, die die eigentliche Zündung über ein Trägerelement mit Zündwiderstand und elektrischen Anschlußkontakten bewirkt, soll in diesen Systemen möglichst klein sein - d.h. die Spulen sollen Durchmesser von maximal 10 mm bei einer Gesamthöhe von etwa 0,5 bis 1,5 mm besitzen. Derartige Trägerelemente mit Zündwiderstand sind beispielsweise in der DE-OS 17 71 889 und der DE-PS 20 20 016 beschrieben. Bei der bisher üblichen Verwendung von gewickelten Drahtspulen mit viden einzelnen Bauelementen konnte die Herstellung von Lötstellen und Kontaktstellen, sowie die gesamte Verbindungstechnik problemlos durchgeführt werden. Diese bekannten Verfahrensweisen lassen sich jedoch nicht auf die Her, stellung von Spulen mit kleinen Abmessungen übertragen, so daß die gewünschte Miniaturisierung der Sekundärspule eine Massenfertigung vor schwere Probleme stellt.The principle of contactless energy transmission for ignition purposes is known, for example, from DE-OS 27 34 169 and DE-OS ..... (patent application P 30 24 554.9). In these ignition systems, two coil systems work together according to the transformer system. The secondary coil, which causes the actual ignition via a carrier element with ignition resistor and electrical connection contacts, should be as small as possible in these systems - ie the coils should have a maximum diameter of 10 mm with a total height of approximately 0.5 to 1.5 mm. Such support elements with ignition resistance are for example in DE-OS 17 71 889 and DE-PS 20 20 016 described. With the usual use of wound wire coils with viden individual components, the production of solder joints and contact points, as well as the entire connection technology, could be carried out without any problems. However, these known procedures cannot be applied to the manufacture of coils with small dimensions, so that the desired miniaturization of the secondary coil poses serious problems for mass production.

Es bestand deshalb die Aufgabe, im Bereich der Sekundärspule ein fertigungstechnisch unkompliziertes System aufzubauen, das nur aus wenigen Bausteinen besteht, das mechanisch kompakt ist, wenig elektrische Kontaktnahtstellen aufweist und das den beim Füllen mit dem Anzündsatz aufzuwendenden Druck standhält.It was therefore the task to set up a production-technically uncomplicated system in the area of the secondary coil, which system consisted of only a few components, was mechanically compact, had few electrical contact seams and withstood the pressure to be applied when filling with the igniter.

In Erfüllung dieser Aufgabe wurde nun eine Sekundärspule für ein induktives Anzündmittel gefunden, die als mehrlagige Zylinderspule mit mehreren Wicklungen in jeder Lage ausgebildet ist, nach dem Transformatorprinzip induktiv mit einer Primärspule zusammenwirkt und mit einem Trägerelement mit Zündwiderstand elektrisch leitend verbunden ist. Diese Spule ist dadurch gekennzeichnet, daß die senkrecht zu der Zylinderachse liegenden Wicklungen in Form von separaten Flachspulen auf einem zusammengefalteten folienförmigen Trägermaterial vorliegen, dessen Faltungen sich jeweils zwischen nebeneinander angeordneten Flachspulen befinden, die im Bereich ihrer flächigen Erstreckung gegeneinander isoliert sind und nur an der Faltstelle miteinander verbunden sind.In fulfilling this task, a secondary coil for an inductive igniter has now been found, which is designed as a multilayer solenoid with several windings in each layer, works inductively with a primary coil according to the transformer principle and is electrically conductively connected to a carrier element with an ignition resistor. This coil is characterized in that the windings lying perpendicular to the cylinder axis are in the form of separate flat coils on a folded foil-shaped carrier material, the folds of which are located between adjacent flat coils, which are insulated from one another in the area of their planar extent and only at the fold are interconnected.

Das Trägermaterial ist vorzugsweise ein hochfestes, jedoch biegbares Polyimid oder ein entsprechender Polyester. Auf dieses Trägermaterial sind die verschiedenen Windungsteile von Flachspulen in an sich bekannter Weise aufgebracht. Dies erfolgt z.B. in der Weise, daß beidseitig auf die Trägerfolie eine Folie aus einem leitfähigen Metall, z.B. Kupfer, aufkaschiert und in an sich bekannter Weise das Leiterbild auf beiden Seiten in Form von Flachspulen ausgeätzt wird. Das Leiterbild wird dabei jeweils so angeordnet, daß an einer vorgesehenen Faltstelle des Trägermaterials die äußersten Windungen zweier Flachspulen, die in der fertigmontierten Zylinderspule nebeneinander zu liegen kommen, miteinander verbunden werden. Unter der äußersten Windung soll dabei die Windung mit dem jeweils größten Durchmesser verstanden werden. Die innerste Windung, d.h. die Windung mit dem kleinsten Durchmesser geht jeweils durch das Trägermaterial hindurch,-so daß dort auch ein elektrisch leitender Übergang von einer Flachspule zur nächsten Flachspule auf der anderen Seite des Trägermaterials gewährleistet ist. Bevorzugt ist das Trägermaterial an dieser inneren Übergangsstelle mit Ausnehmungen entsprechenden Durchmessers versehen, die zur Durchkontaktierung in bekannter Weise metallisiert sind.The carrier material is preferably a high-strength, but flexible polyimide or a corresponding polyester. The different winding parts are on this carrier material applied by flat coils in a manner known per se. This is done, for example, in such a way that a film made of a conductive metal, for example copper, is laminated onto both sides of the carrier film and the conductor pattern is etched out on both sides in the form of flat coils in a manner known per se. The conductor pattern is arranged in such a way that the outermost turns of two flat coils, which come to lie next to one another in the fully assembled solenoid, are connected to one another at an intended fold point of the carrier material. The outermost turn should be understood to mean the turn with the largest diameter in each case. The innermost turn, ie the turn with the smallest diameter, passes through the carrier material, so that there is also an electrically conductive transition from one flat coil to the next flat coil on the other side of the carrier material. The carrier material is preferably provided at this inner transition point with recesses of corresponding diameter, which are metallized in a known manner for through-plating.

Diese Anordnung des Leiterbildes in Form von Flachspulen auf der Vorder- und Rückseite von folienförmigem Trägermaterial ermöglicht die Herstellung der erfindungsgemäßen Spulen in der Ebene. Die Windungen werden dabei in der oben genannten Anordnung auf ein Folienmaterial aufgebracht und anschließend noch mit einer isolierenden Deckschicht oder Zwischenlage oder ähnlicher Isolierung versehen. Daraufhin wird die Folie an den vorgesehenen Stellen gefaltet und die einzelnen Faltseiten miteinander verpreßt und/oder verklebt. Die Faltung erfolgt vorzugsweise mäanderförmig.This arrangement of the conductor pattern in the form of flat coils on the front and back of film-shaped carrier material enables the production of the coils according to the invention in the plane. The windings are applied to a film material in the above arrangement and then provided with an insulating cover layer or intermediate layer or similar insulation. The film is then folded at the intended locations and the individual folded pages are pressed together and / or glued. The folding is preferably meandering.

Die Faltung erfolgt an der Übergangsstelle von einer äußersten Windung einer Flachspule auf die äußerste Windung der nächsten Flachspule, vorzugsweise in der Weise, daß die Windungen auf der nächsten Faltseite auf der Innenseite der Faltung zu liegen kommen. Bei gleicher Drehrichtung zweier benachbarter Windungen in der Ebene liegen dann die so zusammengefalteten Windungen in der Spule in sich entgegengesetzter Drehrichtung als rechte und linke Spulenbilder vor. Auf diese Weise ist es möglich, Spulen herzustellen, bei denen die Windungen der Flachspulen zweier benachbarter. Faltseiten jeweils gegenläufig sind. Damit wird in vorteilhafter Weise eine Erhöhung der induzierten Spannung erreicht.The folding takes place at the transition point from an outermost turn of a flat coil to the outermost turn of the next flat coil, preferably in such a way that the Turns on the next fold side come to lie on the inside of the fold. With the same direction of rotation of two adjacent windings in the plane, the windings thus folded up in the coil are in opposite directions of rotation as right and left coil images. In this way it is possible to produce coils in which the turns of the flat coils are two adjacent. Folding sides are opposite each other. An increase in the induced voltage is thus advantageously achieved.

In einer bevorzugten Durchführungsform werden die beiden Faltseiten, die das Ende der Spule bilden, nicht mit einem Leiterbild versehen: die eine, die zusammengefaltete Zylinderspule nach außen begrenzende Faltseite, wird teil-. weise oder vollständig metallkaschiert belassen. Diese Seite ist dann für die Masse-Kontaktierung in dem Anzündmittel vorgesehen. Die andere äußerste Faltseite wird bis auf einen kleinen Innenring in der Spulenachse vollständig von dem Metallüberzug befreit. Der verbleibende Innenring dient dann als Anschlußzone für den Zündwiderstand des Anzündmittels.In a preferred embodiment, the two folding sides which form the end of the coil are not provided with a conductor pattern: the one folding side which delimits the folded solenoid on the outside becomes partial. leave it wise or completely metal-clad. This side is then intended for ground contact in the igniter. The other outermost fold side is completely freed of the metal coating except for a small inner ring in the coil axis. The remaining inner ring then serves as a connection zone for the ignition resistance of the igniter.

Die erfindungsgemäßen Spulen haben vorzugsweise eine Gesamtzahl von 40 bis 90 Windungen, die sich auf vorzugsweise 4 bis 8 beidseitig mit Flachspulen beschichtete gefaltete Trägerfolien verteilen. Selbstverständlich hängt die Anzahl der Windungen u. a. von der Primärspule ab.The coils according to the invention preferably have a total of 40 to 90 turns, which are distributed over preferably 4 to 8 folded carrier foils coated on both sides with flat coils. Of course, the number of turns depends u. a. from the primary coil.

Die Trägerfolie hat vorzugsweise die gleiche geometrische Form und Größe wie die darauf aufgebrachte Flachspule, die vorzugsweise spiralförmig ausgebildet ist, wobei die Spirale auch ellipsenförmig oder nahezu rechteckig abgewandelt sein kann. Bei der spiralförmigen Ausbildung beträgt der Durchmesser des größten, die erfindungsgemäße Spule umschreibenden Kreises vorzugsweise zwischen 5 und 10 mm. Die Höhe der erfindungsgemäßen Spule hängt von der Anzahl der Faltseiten und der Dicke der Trägerfolie ab; sie beträgt vorzugsweise zwischen 0,3 und 0,8 mm; sie kann aber auch erheblich größer sein, je nachdem, wieviele Faltseiten mit Flachspulen die erfindungsgemäße Spule aufweisen soll.The carrier film preferably has the same geometrical shape and size as the flat coil applied thereon, which is preferably of spiral design, the spiral also being able to be modified in an elliptical or almost rectangular manner. In the spiral configuration, the largest diameter is that of the invention Coil circumscribing circle preferably between 5 and 10 mm. The height of the coil according to the invention depends on the number of folded sides and the thickness of the carrier film; it is preferably between 0.3 and 0.8 mm; but it can also be considerably larger, depending on how many folding sides with flat coils the coil according to the invention is to have.

Eine weitere bevorzugte Ausführungsform besteht darin, daß in Verbindung mit dem Widerstand des Anzündelements ein Schwingkreis gebildet wird, wobei das Kreisverhalten auf die Feldänderung des Übertragungssystems abgestimmt sein muß, um eine optimale Wärmeumsetzung im Widerstand des Anzündelements zur-Aktivierung des Anzündsatzes zu gewährleisten. Es ist weiterhin z.B. möglich, im Inneren der gefalteten Spulenanordnung eine Eontaktierung aus magnetischem Werkstoff zum Trägerelement anzuordnen, die in ihrem Frequenzverhalten auf die Resonanzfrequenz des Schwingkreises abgestimmt ist.A further preferred embodiment is that an oscillation circuit is formed in conjunction with the resistance of the ignition element, wherein the circuit behavior must be adapted to the field change of the transmission system to achieve optimal thermal reaction in the resistance of the ignition element to - to ensure activation of the ignition charge. It is also possible, for example, to arrange an intacting made of magnetic material to the carrier element inside the folded coil arrangement, the frequency response of which is matched to the resonance frequency of the resonant circuit.

anhand der Figuren 1 bis 6 wird die erfindungsgemäße Spule und ihre Wirkweise in einem Anzündhütchen beispielhaft erläutert.1 to 6, the coil according to the invention and its mode of action are exemplified in a primer.

Figur 1 zeigt ein Ausführungsbeispiel mit 55 Windungen aus insgesamt 6 Flachspulen. Man erkennt die noch nicht gefaltete Spulenanordnung in einer Ebene, wobei Seite A die Vorder- und Seite B die Rückseite der ungefalteten Spule sind. Das Trägermaterial 1 weist hier die vier Faltseiten 2 auf, auf denen jeweils die verschiedenen Flachspulen 3 mit ihren spiralförmigen Windungen abgebildet sind. Die Öffnungen 4 der Faltseiten 2 dienen zur Durchkontaktierung zwischen den Seiten A und B. Außerdem sind die Anschlußzone 5 für die Massekontaktierung und die Anschlußzone 6 für den nicht gezeigten Zündwiderstand zu erkennen. Die Linien C-C' zeigen die Faltstellen an. Die Anzahl der Flachspulen kann je nach Aufgabenstellung festgelegt werdeFigure 1 shows an embodiment with 55 turns of a total of 6 flat coils. The coil arrangement which has not yet been folded can be seen in one plane, side A being the front and side B the back of the unfolded coil. The carrier material 1 here has the four folded sides 2, on each of which the various flat coils 3 are depicted with their spiral turns. The openings 4 of the folded sides 2 serve for through-contacting between the sides A and B. In addition, the connection zone 5 for the ground contact and the connection zone 6 for the ignition resistor, not shown, can be seen. The Lines CC 'show the folds. The number of flat coils can be determined depending on the task

Figur 2 zeigt ein Zwischenstadium der gefalteten Spule.Figure 2 shows an intermediate stage of the folded coil.

Figur 3 zeigt die Anordnung eines Trägerelementes 8 zu der Spule. Das an dem gefalteten Spulenpaket 9 anliegende oder auch mit Hilfe eines Stiftes in die Öffnung 4 der Anschlußzone hineingesteckte elektrische Trägerelement, dessen Zündwiderstand in bekannter Weise als Brücke oder Spalt ausgebildet ist, ist einerseits im mittleren Teil über eine geeignete elektrische Verbindung 41, beispielsweise den vorgenannten Stift, mit dem Spulenanfang bei 6 (hier nicht gezeigt) kontaktiert und am äußeren Umfang 42-z.B. über einen elektrisch leitenden Stützkörper 10 und.Kapsel 11 mit dem Spulenende bei 5 elektrisch verbunden (siehe hierzu auch Figur 4).Figure 3 shows the arrangement of a carrier element 8 to the coil. The electrical carrier element which is in contact with the folded coil package 9 or also inserted with the aid of a pin into the opening 4 of the connection zone, the ignition resistance of which is designed in the known manner as a bridge or gap, is on the one hand in the central part via a suitable electrical connection 41, for example the aforementioned Pin, contacted with the coil beginning at 6 (not shown here) and on the outer circumference 42-eg electrically connected to the coil end at 5 via an electrically conductive support body 10 and capsule 11 (see also FIG. 4).

Die gefaltete und zusammengepreßte Spule 9, in Verbindung mit dem Trägerelement 8, stellt ein kompaktes Bauelement dar, das mechanisch hoch beanspruchbar ist und beispielsweise späteren Preßdrücken beim Laden des Zündsatzes 12 von ca. 20 000 N/cm2 standhält.The folded and compressed coil 9, in connection with the carrier element 8, represents a compact component that can withstand high mechanical loads and withstands, for example, later pressing pressures when charging the primer 12 of approximately 20,000 N / cm 2 .

Figur 4 zeigt eine Gesamtdarstellung des induktiven Anzündmittels. Das Spulenpaket 9 mit dem aufgesetzten elektrischen Anzündelement 8 ist in einen Stützkörper 10 eingesetzt und bildet mit der äußeren Kapsel 11 eine mechanisch feste Einheit. Nach ggf. elektrischer Überprüfung wird das induktive Anzündmittel mit dem Anzündsatz 12 geladen.Figure 4 shows an overall view of the inductive igniter. The coil package 9 with the attached electrical ignition element 8 is inserted into a support body 10 and forms a mechanically fixed unit with the outer capsule 11. After an electrical check, if necessary, the inductive igniter is charged with the igniter 12.

Die mechanischen Bauteile 8 bis 11 des induktiven Anzündmittels können sowohl aus verbrennbaren, als auch aus nicht verbrennbaren Werkstoffen bestehen. Der Stützkörper 10 besteht vorzugsweise aus Weicheisen oder aus hochfestem Sintermaterial mit ferromagnetischen Eigenschaften, um den magnetischen Fluß zu verbessern und dadurch die induzierte Spannung zu erhöhen. Die Kapsel 11 wird vorzugsweise aus antimagnetischen (dia- oder paramagnetischen) Werkstoffen ausgeführt. Es wird hier vorzugsweise Messing oder Edelstahl eingesetzt. Bei der verbrennbaren Version wird der Stützkörper 10 aus einem Verbundwerkstoff, bestehend aus Glasfaser, Oktogen, ferromagnetischem Metall- oder Metalloxidpulver und Harz als Bindemittel, ausgeführt, wobei die Oberfläche an Kontaktierungszwecken elektrisch leitend sein muß.The mechanical components 8 to 11 of the inductive igniter can consist of both combustible and non-combustible materials. The support body 10 consists preferably of soft iron or of high-strength sintered material with ferromagnetic properties in order to improve the magnetic flux and thereby increase the induced voltage. The capsule 11 is preferably made of antimagnetic (diamagnetic or paramagnetic) materials. Brass or stainless steel is preferably used here. In the combustible version, the support body 10 is made of a composite material consisting of glass fiber, octogen, ferromagnetic metal or metal oxide powder and resin as a binder, the surface having to be electrically conductive for contacting purposes.

Die äußere Kapsel 11 besteht aus dem Verbundwerkstoff Glasfaser-Oktogen und Harz als Bindemittel.The outer capsule 11 consists of the composite material glass fiber octogen and resin as a binder.

FunktionsbeschreibungFunctional description

Zur Erläuterung der Funktion ist in Figur 5 das induktive Anzündmittel 13 in einem Verbrennungsraum 14 dargestellt. Bei Beaufschlagung des induktiven Anzündmittels 13 mit einem magnetischen Wechselfeld, das durch die Primärspule 15 aufgebracht wird, wobei Spule und Zündwiderstand einen Schwingkreis bilden, wird bei dessen Resonanzfrequenz in bekannter Weise die optimale Spannung in der Sekundärspule induziert, die durch den elektrischen Widerstand des Anzündelementes einen Zündstrom treibt, der eine Umsetzung in Joul'sche Wärme zur Zündung des Anzündsatzes 12 in dem Anzündmittel 13 bewirkt. Das Treibladungspulver 16 wird damit gezündet. Eine komplette Umsetzung sämtlicher verbrennbarer Teile im Verbrennungsraum 14 ist die Folge.To explain the function, the inductive ignition means 13 is shown in a combustion chamber 14 in FIG. When the inductive igniter 13 is acted upon by an alternating magnetic field, which is applied by the primary coil 15, the coil and the ignition resistor forming a resonant circuit, the optimal voltage is induced in the secondary coil at its resonance frequency in a known manner, which is caused by the electrical resistance of the igniter element Drives ignition current, which causes a conversion into Joule heat to ignite the ignition charge 12 in the ignition means 13. The propellant powder 16 is thus ignited. The result is a complete implementation of all combustible parts in the combustion chamber 14.

Claims (6)

1. Sekundärspule in einem induktiven Anzündmittel, die als mehrlagige Zylinderspule mit mehreren Wicklungen in jeder Lage ausgebildet ist und nach dem Transformatorprinzip induktiv mit einer Primärspule zusammenwirkt und mit einem Trägerelement mit Zündwiderstand elektrisch verbunden ist, dadurch gekennzeichnet , daß die senkrecht zur Längsachse der Spule liegenden Wicklungen in Form von mindestens zwei separaten Flachspulen auf einem zusammengefalteten folienförmigen Trägermaterial vorliegen, dessen Faltungen sich jeweils zwischen nebeneinander angeordneten Flachspulen befinden, die nur an der Faltstelle miteinander verbunden sind, im Bereich ihrer flächigen Erstreckung aber gegeneinander isoliert sind.1. Secondary coil in an inductive igniter, which is designed as a multilayer solenoid with several windings in each layer and interacts inductively with a primary coil according to the transformer principle and is electrically connected to a carrier element with an ignition resistor, characterized in that the are perpendicular to the longitudinal axis of the coil Windings in the form of at least two separate flat coils are present on a folded-up film-shaped carrier material, the folds of which are each located between adjacent flat coils, which are only connected to one another at the folding point, but are insulated from one another in the area of their flat extension. 2. Sekundärspule gemäß Anspruch 1, dadurch gekennzeichnet, daß auf der Vorder- und Rückseite der durch die Faltungen entstehenden Faltenseiten des Trägermaterials jeweils eine Flachspule angeordnet ist.2. Secondary coil according to claim 1, characterized in that a flat coil is arranged on the front and back of the fold sides of the carrier material resulting from the folds. 3. Sekundärspule gemäß Anspruch 1, dadurch gekennzeichnet, daß die Windungen der Flachspulen zweier benachbarten Faltseiten jeweils gegenläufig sind.3. Secondary coil according to claim 1, characterized in that the turns of the flat coils of two adjacent folded sides are in opposite directions. 4. Sekundärspule gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Wicklung durch Abätzung eines kupferkaschierten Trägermaterials hergestellt ist.4. Secondary coil according to one of claims 1 to 3, characterized in that the winding is produced by etching a copper-clad carrier material. 5. Sekundärspule gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß eine der die Zylinderspule außen begrenzenden Faltseiten, die in dem Anzündmittel zum Kontaktieren mit der Masse in Berührung steht, mindestens teilweise metallisiert ist.5. Secondary coil according to one of claims 1 to 4, characterized in that one of the outside of the solenoid bounding folding sides which is in contact with the ground in the ignition means for contact, is at least partially metallized. 6. Sekundärspule gemäß Anspruch 5, dadurch gekennzeichnet, daß die innere Wicklung der anderen äußeren Faltseite als Anschlußzone für den Zündwiderstand des Trägerelements ausgebildet ist.6. Secondary coil according to claim 5, characterized in that the inner winding of the other outer folding side is designed as a connection zone for the ignition resistance of the carrier element.
EP83106141A 1982-08-24 1983-06-23 Secondary winding for inductive ignition Expired EP0101817B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3231369A DE3231369C1 (en) 1982-08-24 1982-08-24 Secondary coil for inductive igniters
DE3231369 1982-08-24

Publications (2)

Publication Number Publication Date
EP0101817A1 true EP0101817A1 (en) 1984-03-07
EP0101817B1 EP0101817B1 (en) 1987-03-18

Family

ID=6171546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106141A Expired EP0101817B1 (en) 1982-08-24 1983-06-23 Secondary winding for inductive ignition

Country Status (3)

Country Link
US (1) US4651254A (en)
EP (1) EP0101817B1 (en)
DE (2) DE3231369C1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8602948A (en) * 1986-11-20 1988-06-16 Philips Nv INDUCTIVE WINDING.
US4918418A (en) * 1988-08-04 1990-04-17 Caterpillar Inc. Inductive coil structure with electrical return path
US4914561A (en) * 1989-02-03 1990-04-03 Eldec Corporation Dual transformer device for power converters
US5017902A (en) * 1989-05-30 1991-05-21 General Electric Company Conductive film magnetic components
US4959630A (en) * 1989-08-07 1990-09-25 General Electric Company High-frequency transformer
US5565837A (en) * 1992-11-06 1996-10-15 Nidec America Corporation Low profile printed circuit board
JP3252605B2 (en) * 1994-07-04 2002-02-04 株式会社村田製作所 Electronic component and method of manufacturing the same
US6269728B1 (en) 1997-02-21 2001-08-07 Dynamit Nobel Gmbh Explosivstoff Und Systemtechnik Inductive ignition system, in particular for infantry weapons
US6222437B1 (en) * 1998-05-11 2001-04-24 Nidec America Corporation Surface mounted magnetic components having sheet material windings and a power supply including such components
TW462131B (en) * 1998-07-08 2001-11-01 Winbond Electronics Corp Assembling type inductive devices
EP1204840B1 (en) * 1999-07-30 2003-03-05 Dynamit Nobel AmmoTec GmbH Entirely combustible inductive primer
GB0027007D0 (en) * 2000-11-04 2000-12-20 Profec Technologies Oy Inductive components
US6768229B2 (en) * 2002-01-09 2004-07-27 Seagate Technology Llc Coil construction for voice coil motor
JP2004207700A (en) * 2002-12-11 2004-07-22 Canon Inc Electronic component and method for manufacturing the same
DE102005031748B3 (en) 2005-07-07 2006-08-03 Rheinmetall Waffe Munition Gmbh Receiver coil for a tempered non-lethal projectile containing paint, chemical irritant or mist comprises a metal-powder blank having magnetic properties
US8193781B2 (en) 2009-09-04 2012-06-05 Apple Inc. Harnessing power through electromagnetic induction utilizing printed coils
US20130305520A1 (en) * 2012-05-20 2013-11-21 Trevor Graham Niblock Batch Manufacturing Meso Devices on flexible substrates
US10254090B1 (en) 2013-03-14 2019-04-09 University Of Central Florida Research Foundation Layered energetic material having multiple ignition points
US9464874B1 (en) * 2013-03-14 2016-10-11 Spectre Materials Sciences, Inc. Layered energetic material having multiple ignition points
US20150345922A1 (en) * 2014-05-28 2015-12-03 Baker Hughes Incorporated Igniter for Downhole Use Having Flame Control
US11112222B2 (en) 2019-01-21 2021-09-07 Spectre Materials Sciences, Inc. Propellant with pattern-controlled burn rate
EP4295105A1 (en) 2021-02-16 2023-12-27 Spectre Materials Sciences, Inc. Primer for firearms and other munitions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE906831C (en) * 1951-12-11 1954-03-18 Rudolf Sliwka Simplified manufacture of induction coils, chokes and transformers
DE1239773B (en) * 1964-08-04 1967-05-03 Licentia Gmbh Folded windings for transformers, choke coils and similar induction devices are printed on a band-shaped carrier made of insulating material
EP0030580A1 (en) * 1978-10-13 1981-06-24 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Device for electric ignition by magnetic induction of a pyrotechnic substance

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3002260A (en) * 1961-10-03 shortt etal
US2014524A (en) * 1933-04-28 1935-09-17 Western Electric Co Article
US2911605A (en) * 1956-10-02 1959-11-03 Monroe Calculating Machine Printed circuitry
FR1370673A (en) * 1963-06-24 1964-08-28 Csf Superconducting winding coil and method of making it
US3484731A (en) * 1967-10-05 1969-12-16 Edward L Rich Printed circuit inductor
DE1771889A1 (en) * 1968-07-25 1972-01-27 Dynamit Nobel Ag Electric ignition element
DE1901271A1 (en) * 1969-01-11 1970-09-17 Messerschmitt Boelkow Blohm Inductive connection for an electrical ignition system of a powder or explosive charge
DE2020016C3 (en) * 1970-04-24 1974-12-12 Dynamit Nobel Ag, 5210 Troisdorf Metal film igniter
US3812442A (en) * 1972-02-29 1974-05-21 W Muckelroy Ceramic inductor
FR2363777A1 (en) * 1976-09-01 1978-03-31 Signaux Entr Electriques CONTACTLESS ELECTRIC ENERGY TRANSMISSION DEVICE, ESPECIALLY FOR PYROTECHNIC IGNITERS
DE3024554C2 (en) * 1980-06-28 1985-06-05 Dynamit Nobel Ag, 5210 Troisdorf Arrangement for the contactless transmission of electrical energy to missiles when they are launched
US4369557A (en) * 1980-08-06 1983-01-25 Jan Vandebult Process for fabricating resonant tag circuit constructions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE906831C (en) * 1951-12-11 1954-03-18 Rudolf Sliwka Simplified manufacture of induction coils, chokes and transformers
DE1239773B (en) * 1964-08-04 1967-05-03 Licentia Gmbh Folded windings for transformers, choke coils and similar induction devices are printed on a band-shaped carrier made of insulating material
EP0030580A1 (en) * 1978-10-13 1981-06-24 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Device for electric ignition by magnetic induction of a pyrotechnic substance

Also Published As

Publication number Publication date
DE3370372D1 (en) 1987-04-23
EP0101817B1 (en) 1987-03-18
DE3231369C1 (en) 1984-01-05
US4651254A (en) 1987-03-17

Similar Documents

Publication Publication Date Title
EP0101817B1 (en) Secondary winding for inductive ignition
DE112008003104B4 (en) Ceramic multilayer component
DE2703628C2 (en) Rechargeable, implantable stimulation pulse device
EP0520535B1 (en) Device for transmitting electrical energy and data in automotive vehicles
DE69002493T2 (en) Ignition arrangement for an internal combustion engine with a primary winding module.
DE60106519T2 (en) Electropyrotechnical igniter with thin film ignition bridge and low energy requirement
EP0150823B1 (en) Electric ignitor
DE102008037893A1 (en) Inductive conductivity sensor
DE1901271A1 (en) Inductive connection for an electrical ignition system of a powder or explosive charge
DE3812958A1 (en) ELECTRIC FUEL
DE3002233C2 (en)
DE3532660C2 (en)
DE3502526A1 (en) Electrical ignition element
DE1464646B2 (en) DEVICE FOR SHAPING WORKPIECES BY APPLICATION OF MAGNETIC PULSE ENERGY
DE2135767C3 (en) Trimmer capacitor and process for its manufacture
EP1929490B1 (en) Rod ignition transformer for supplying an ignition element, especially a spark plug of an internal combustion engine, with high voltage
EP1706878B1 (en) Ignition coil for an internal combustion engine
WO2001009563A1 (en) Entirely combustible inductive primer
DE3909579A1 (en) HIGH PERFORMANCE TUNING CAPACITOR
EP0191903B1 (en) Electric primer or igniter
DE69108072T2 (en) Conical spring for an electrical contact.
DE19624359C1 (en) Secondary explosive igniting device
EP0475429B1 (en) Voltage multiplier to be connected to an AC voltage source, for example the secondary winding of a transformer
AT216937B (en) Electric ignition device
DE2132879C3 (en) X-ray machine with two pulse generators, which have unloadable capacities for generating high-voltage pulses

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

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19840720

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 3370372

Country of ref document: DE

Date of ref document: 19870423

ET Fr: translation filed
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

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: HUELS TROISDORF AKTIENGESELLSCHAFT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940610

Year of fee payment: 12

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

Ref country code: FR

Payment date: 19940629

Year of fee payment: 12

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940630

Year of fee payment: 12

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

Ref country code: GB

Effective date: 19950623

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

Ref country code: LI

Effective date: 19950630

Ref country code: CH

Effective date: 19950630

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

Effective date: 19950623

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

Ref country code: FR

Effective date: 19960229

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: DE

Payment date: 19960715

Year of fee payment: 14

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

Ref country code: DE

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

Effective date: 19980303