EP1075729A1 - Generateur servant a produire des impulsions d'energie electrique de courte duree - Google Patents

Generateur servant a produire des impulsions d'energie electrique de courte duree

Info

Publication number
EP1075729A1
EP1075729A1 EP99915758A EP99915758A EP1075729A1 EP 1075729 A1 EP1075729 A1 EP 1075729A1 EP 99915758 A EP99915758 A EP 99915758A EP 99915758 A EP99915758 A EP 99915758A EP 1075729 A1 EP1075729 A1 EP 1075729A1
Authority
EP
European Patent Office
Prior art keywords
magnet
inducing
induction coil
induction
magnetic field
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99915758A
Other languages
German (de)
English (en)
Inventor
Peter Kloft
Jürgen GELING
Walter Lengenfelder
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.)
Dynamit Nobel AG
Original Assignee
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of EP1075729A1 publication Critical patent/EP1075729A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
    • H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1853—Rotary generators driven by intermittent forces
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K2017/9706—Inductive element

Definitions

  • the invention relates to a generator for generating short-term electrical energy pulses according to the preamble of the first claim.
  • a stationary outer ring consisting of magnet and coil, surrounds an iron core and the flux change takes place by moving the iron core relative to the coil and magnet, while in version b) a core magnet is used, which is moved relative to the coil.
  • the basic diagram of a gas lighter is shown in Figure 56.7.
  • the mode of operation of the generator is based on the fact that an electromotive force is generated in a winding when the magnetic circuit is opened. The armature is suddenly torn away from the pole shoes when the magnetic force is reached via an actuation button and an intermediate compression spring.
  • the change in the magnetic flux density over time is responsible for the magnitude of the voltage or current pulse.
  • impact detonators for example, as are known from Figure 56.6 of the specified literature reference, the high impact velocity of the projectile is used. Impact detonator must be carefully protected against unintentional activation before they are triggered as intended.
  • the object of the present invention is to present a generator with permanent magnets which is safe to handle and which delivers a high electrical energy pulse even when triggered manually.
  • the structure of the generator according to the invention differs significantly from the prior art.
  • the induction coil or coils and the inducing permanent magnet generating the magnetic field are initially spatially separated from one another.
  • the inducing magnet is movable.
  • At least one further magnet is arranged in a stationary manner in front of the induction coil or the induction coils. From this stationary magnet, a magnetic field with such an orientation of the Polarity creates that it represents an obstacle in front of the induction coil for the induction magnet, which it must overcome.
  • the magnetic field, which initially prevents the induction magnet from approaching the induction coil, is, according to the first embodiment of the invention, generated by a magnet, which is advantageous due to the effect of two magnets, which is stationary on the path of the induction magnet between its initial position and the Induction coil are arranged.
  • the term "stationary" is not intended to rule out the fact that these magnets can be adjusted in a distance from the induction coil for optimal coordination of the acceleration of the induction magnet to the induction coil inducing magnet in its starting position in a direction away from the induction coil acts repulsive.
  • the inducing magnet So that the inducing magnet can develop its intended effect, it must first overcome the repulsive force of the magnetic field of the stationary magnet or magnets.
  • This position lies behind the so-called point of symmetry, usually behind the point at which the inducing magnet is arranged symmetrically to the stationary magnets and the similar poles of the inducing and the stationary magnets are exactly opposite one another.
  • the invention has the advantage that after overcoming the securing effect of the magnetic field of the stationary magnet, this magnetic field even supports the intended generation of an electrical energy pulse by accelerating the inducing magnet in the direction of the coil.
  • An advantageous embodiment of the first embodiment of the generator according to the invention is constructed in such a way that the poles of the inducing magnet are arranged perpendicular to its direction of movement.
  • the poles of the stationary magnets are also arranged perpendicular to the direction of movement of the inducing magnet.
  • the poles of all magnets are in one plane.
  • the facing poles of the stationary magnets have a different polarity.
  • the poles of the stationary magnets that border the path of the inducing magnet have the same polarity as the poles of the inducing magnet that face them. This arrangement of the poles in relation to each other creates a strong repulsive effect on the inducing magnet.
  • the magnetic field of the stationary magnet or magnets can also have an orientation of polarity such that it has an attractive effect on the inducing magnet in the starting position.
  • the poles of the stationary magnet or magnets and the poles of the induction magnet which lie in one plane, are aligned with one another in such a way that opposite poles are opposite one another.
  • the inducing magnet can be positioned in its starting position and is held there.
  • the attractive force of the stationary magnets must be overcome and the inducing magnet accelerated in the direction of the induction coil. The attraction is overcome with the means provided.
  • the acceleration towards Induction coil advantageously takes place automatically after overcoming the attractive force if the induction coil has, for example, a core collecting the magnetic field lines, if possible a yoke with a gap which is closed by the inducing magnet.
  • the magnetic field that builds up in the core accelerates the inducing magnet towards the induction coil.
  • the invention presents a generator for generating short-term electrical energy pulses, which according to the invention has a magnetic field that can perform a safety function that makes it difficult to trigger the generator unintentionally. If the inducing magnet is in its initial position, the magnetic field of the stationary magnet, because of its repulsive or attractive effect, prevents the inducing magnet from being able to move out of this position automatically.
  • the invention advantageously makes it possible to make the known impact detonators even safer.
  • the bolt which can be displaced by the action of force is generally connected to the inducing magnet. If the impact energy of a fired projectile is not sufficient to allow the induction magnet according to the first embodiment of the invention to overcome the repulsive force of the magnetic field of the stationary magnet in the direction of the induction coil, the impact bolt is also not pressed in. This is a sign that the generator has actually not been operated. In the case of a non-exploded projectile with the bolt pressed in, however, it can be assumed that the detonator was actuated but not triggered, so that this projectile represents a recognizable danger.
  • the other embodiment of the generator according to the invention in which the inducing magnet is held by the magnetic field of the stationary magnet, also makes it more difficult to trigger an impact detonator. In this case, however, the distance that can be seen by the release bolt is less.
  • the means with which the movable, inducing magnet can be brought out of its initial position in the direction of the coil can be matched to the magnetic field of the stationary magnet with regard to the force to be applied in such a way that manual triggering of the generator is possible and an electrical energy pulse nevertheless is generated, which is sufficiently high for the intended use, for example the ignition of a charge, the induction of a voltage for the operation of a timer or the control of a projectile.
  • a manually operated pushing device can be provided as the means for moving the inducing magnet out of its initial position.
  • the leverage of a manual trigger that acts on the pusher can be used.
  • the generator of a weapon according to the invention can thus also be triggered by an operator without, for example, requiring an electrical energy source.
  • a latent energy store can be, for example, a prestressed spring which, viewed in the intended direction of movement of the inducing magnet, is arranged in front of the latter. The spring is kept tensioned and when a fuse is removed, the relaxing spring throws the inducing magnet beyond the point of symmetry of the repelling magnetic field into the area of the magnetic field in which it is accelerated towards the induction coil or releases it from the attraction of the stationary magnet.
  • the force of the tensioned spring must be higher than the repulsive or attractive force of the respective magnetic field of the stationary magnet, so that the securing effect of the magnetic field does not come into effect in this exemplary embodiment.
  • another latent energy accumulators can also be provided with propellant charges or gas generators, which, however, also require ignition before they take effect.
  • the intended use and the space available determine the shape and the equipment of the inductive part of the generator, which contains at least one induction coil.
  • Three possible designs that advantageously have a simple construction are presented here.
  • the induction coil can be a cylindrical coil which has no core collecting the field lines of the magnetic field. It is a so-called air coil.
  • the inducing magnet can be moved in or through along its longitudinal axis.
  • the magnetic field cuts the windings of the coil and induces a voltage in them. The level of this voltage depends on the speed at which the inducing magnet moves in the coil.
  • the version presented here is simple in structure. If the inducing magnet remains mechanically connected to the means with which it can be brought out of its starting position towards the coil, it can also be pulled out of the coil again because the magnetic field is not amplified by a core.
  • a bolt of appropriate length or, in the case of manual actuation, a pushing device is suitable as a means.
  • the proposed design enables both a single use and a reuse if the generator is not arranged in a floor itself.
  • an energy pulse is only generated when the inducing magnet is thrown into the coil either by the repulsive effect of the magnetic field of the stationary magnet or, if the version with the attracting magnetic field is selected, by means of a latent energy store.
  • Induction coil be a rod core coil, the core of which collects the magnetic field lines.
  • the coil encloses, for example, an iron core, which generally consists of layered, interconnected metal sheets.
  • An iron core collects them magnetic field lines and thereby strengthens the magnetic field, so that the induced voltage is higher than in a solenoid without a core, a so-called air coil.
  • the intensity of the magnetic field in the coil changes and an electrical energy pulse is generated.
  • the inductive part relates to an induction coil which is arranged on a core which has a gap which is closed by the inducing magnet.
  • the core can have a U-shape, for example, and the magnet closes the gap between the two legs. Because the core is suddenly closed by a magnet, a magnetic field strengthened by the core with a high change in intensity and thus a high yield of electrical energy is created immediately.
  • Another advantage of this arrangement is that a coil can be arranged on each of the U-legs. The two coils can be connected in series to add up the induced voltages.
  • the induction coil or the induction coils can be arranged on a simple or multi-membered, non-closed core, for example on an annular core or an E-shaped core, the inducing magnet in each case closing the gap.
  • the achievable level of the induced voltage is essentially influenced by the quality of the inducing magnet, ie by the strength of its magnetic field and by the material of the core which amplifies the magnetic field in the induction coil.
  • Magnets made from metallic sintered materials, for example from NdFe (neodymium iron), and cores from laminated cores, the laminations consisting, for example, of an iron-cobalt alloy, are particularly suitable.
  • the acceleration of the induction magnet in the direction of the induction coil is additionally advantageously supported in that the stationary magnet is arranged at such a distance from the core of the induction coil that the induction magnet is already in the gap on the way into the gap of the core occurs while it covers the stationary magnet or magnets at most up to half.
  • a magnetic field is then already built up in the core, which attracts the inducing magnet.
  • the attracting effect of the magnetic field building up in the core is added to the overcoming magnetic field with the repulsive effect on the induction magnet, as a result of which the acceleration effect on the induction magnet in the direction of the induction coil is increased.
  • the magnetic field with the attractive effect on the inducing magnet the release from this magnetic field is supported.
  • a positive guide made of a non-magnetizable material is provided for the inducing magnet between its starting position and the induction coil.
  • Such positive guidance can be, for example, a tube adapted to the dimensions of the inducing magnet.
  • the positive guidance enables the induction magnet to be moved out of its initial position and from there on it can be safely forwarded to the induction coil.
  • the positive guidance effectively prevents the inducing magnet from changing its position and orientation during its travel or from being deflected from its intended direction.
  • the inducing magnet should be exposed to as little friction as possible on its way to the induction coil. It is therefore advantageous if the inducing magnet is covered with a material with a low coefficient of friction at least on the surfaces with which it rests on the positive guide. This material can be Teflon, for example.
  • a sliding layer made of grease or oil serves the same purpose if it has no negative effects on materials or electronic components.
  • the positive guidance consists of a material with a low coefficient of friction or the inducing magnet is mounted on a slide made of a material with a low coefficient of friction.
  • FIG. 1 shows a generator, the induction coil of which is a cylindrical coil without a core, in longitudinal section,
  • 1 a shows a cross section through the positive guidance of the generator at the level of the two stationary magnets
  • FIG. 2 shows a generator, the induction coils of which are rod core coils, in the end position in each case one pole of the inducing magnet being positioned in front of an end face of a rod core, in longitudinal section,
  • FIG. 3 shows a generator with two series-connected coils on a U-shaped iron core, with the inducing magnet in the starting position and a manually operated pushing device, in longitudinal section, 4, the generator of FIG. 3, wherein the inducing magnet is in the point of symmetry of the repelling magnetic field,
  • Fig. 5 shows the generator of Fig. 3, wherein the inducing magnet is in the end position
  • Fig. 6 shows a generator with an inductive part corresponding to the generator of Fig. 3, but in which the inducing magnet is held in its starting position by the attracting magnetic field of the stationary magnets.
  • a generator 100 according to the invention is shown schematically in section in FIG.
  • the housing 2 also contains the positive guide 3 for the inducing magnet 4.
  • the positive guide 3 has a rectangular cross section, as can be seen in FIG. 1 a, and is made up of the two side walls 5 and 6 and the base 7 and the cover 8 of the housing 2 is formed.
  • the cover 8 has been omitted to show the structure of the generator 100.
  • the housing 2 is made of a non-magnetizable material with a low coefficient of friction.
  • the side walls 5 and 6 have a greater wall thickness than the base 7 and the cover 8 because, on the one hand, they receive the two stationary magnets 9 and 10 in recesses 11 and 12 respectively provided for this purpose, which carry the induction coil 13, cut longitudinally here and serve as a fastening for the actuating device 14, which is provided as a means for moving the inducing magnet 4 out of its initial position 15.
  • the induction coil 13 is a cylindrical coil without a core, a so-called air coil, and therefore has a cavity 31 around the center line 23.
  • the actuating device 14 consists of a rod 16 which is guided through the end wall 17 of the housing 2 and is connected to a carriage 18 on which the inducing magnet 4 is mounted.
  • the carriage 18 is made of a material with a low coefficient of friction. It completely envelops the inducing magnet 4 and thus its sliding surfaces, the surfaces of the poles N and S, as can be seen from FIG. 1 a.
  • 1 a shows a cross section through the positive guide 3 of the generator 100 at the level of the two stationary magnets 9 and 10.
  • the slide 18 is located in the positive guide 3, easily displaceable.
  • the actuating device 14 also includes two springs 19 and 20, which are pushed over the rod 16.
  • the spring 19 is arranged between the end wall 17 of the housing 2 and the slide 18 and can be put under a predetermined tension by compression, while the rod 16 is held in the starting position shown by a device, not shown here. If this device releases the rod 16, it can be moved in the direction of arrow 21, the spring 19 being able to support this movement.
  • the preload can be chosen so large that the force of the spring 19 is sufficient to accelerate the inducing magnet 4 beyond the point of symmetry 26 of the repelling magnetic field 24 of the stationary magnets 9 and 10 into the cavity 31 of the induction coil 13.
  • the inductive magnet 4 dips along the common center line 23 from the positive guide 3 and the solenoid 13 into the cavity 31 of the solenoid 13 and, after generation of the energy pulse, reaches the end position 22 shown in broken lines, the movement of the carriage 18 being braked by the spring 20 and path 27 is limited by the length of stage 16.
  • the voltage induced in the induction coil 13 is fed via the connections 32 of the induction coil to an amplifier circuit, not shown here, which belongs to the prior art.
  • the inducing magnet 4 has to overcome the repelling magnetic field 24 of the stationary magnets 9 and 10 on its way 27 from the starting position 15 to the end position 22.
  • the repelling magnetic field 24, the structure of which is represented by some field lines 25, is constructed as follows by the arrangement of the poles of the stationary magnets 9 and 10:
  • the north pole N of the magnet 9 and the south pole S of the magnet 10 face the positive guide 3 and are oriented perpendicular to the direction of movement 21 of the inducing magnet 4.
  • the poles can also have reversed polarity.
  • the opposite poles N of the magnet 9 and S of the magnet 10 attract each other. Without the presence of the inducing magnet 4, the magnetic field 24 would be constructed symmetrically.
  • the point of symmetry 26 lies in the middle of the opposing poles 9 and 10 on the center line 23 of the positive guide 3.
  • the magnetic field 28 of the inducing magnet 4 is also symmetrical, without the presence of the repelling magnetic field 24, as can be seen from the course of the field line 29 of the part of the magnetic field 28 which faces the end wall 17 of the housing.
  • the inducing magnet 4 is arranged in the positive guide 3 such that a north pole N faces the north pole N of the stationary magnet 9 and its south pole S faces the south pole S of the stationary magnet 10. All magnets are in one plane. Where the inducing magnet 4 extends into the area of the stationary magnets 9 and 10, the magnetic fields 24 and 28 of the same type collide due to the polarity of the magnets which are assigned to one another. There is a strong repulsive force, as the bent field lines 25 and 29 are intended to illustrate. In the starting position 15, this force acts on the induction magnet 4 in the direction 30 away from the induction coil 13.
  • the generator 100 is actuated by displacing the inducing magnet 4 by means of the rod 16 in the direction 21 onto the induction coil 13, the repulsive force of the magnetic field 24 of the stationary magnets 9 and 10 acts counter to the displacement direction 2 until the inducing one Magnet 4 is located at the point of symmetry 26 of the magnetic field 24. At this point, there is an indifferent equilibrium between the magnetic field 28 generated by the inducing magnet 4 and the magnetic field 24. A slight force acting on the inducing magnet 4 in the direction 21 towards the induction coil 13 brings it out of equilibrium and the magnetic field 24 acts the inducing magnet 4 in the direction repelling on the induction coil 13.
  • the inducing magnet 4 is thrown into the cavity 31 of the coil 13 by the repulsive force of the magnetic field 24 along the path 27.
  • the more intensive this process is, the higher the speed the field lines 29 of the magnetic field 28 of the inducing magnet 4 penetrate the windings of the coil 13 and the higher the induced voltage which is present at their connections 32.
  • FIG. 2 shows a generator 101 with a further exemplary embodiment for the inductive part.
  • Features that correspond to the previous exemplary embodiment are identified by the same reference numerals.
  • the inductive part of the generator 101 differs from the inductive part of the generator 100 in that in the present exemplary embodiment two rod core coils 33 and 34 are provided as induction coils, each of which has a rod core 35 and 36 collecting the magnetic field lines, which in the present exemplary embodiment consists of layered sheets 37 exists.
  • the induction coils 33 and 34 have a common axis 38 which is perpendicular to the center line 23 of the positive guide 3.
  • the induction coils 33 and 34 are attached to the side walls 5 and 6 of the housing 2.
  • the side walls 5 and 6 have openings 39 and 40, respectively, through which the rod cores 35 and 36 extend to the position which the inducing magnet 4 assumes in the illustrated end position after induction has taken place.
  • the inducing magnet 4 has left its starting position 41 shown in broken lines after being triggered by the actuating device 14. After he has overcome the magnetic field 24 generated by the stationary magnets 9 and 10 and has covered the path 27, he has applied to the end faces 45 and 46 of the two rod cores 35 and 36, respectively. He has induced a voltage in the two induction coils 33 and 34.
  • the induced voltage can be connected via the respective connections 43 or 44 of the induction coils 33 or 34 either in parallel or in series with a device not shown here. but can be supplied by the prior art amplifier circuit. However, the induced voltages can also be used separately, for example to generate two separate signals.
  • FIGS. 3 to 5 A particularly preferred embodiment of the invention is shown in FIGS. 3 to 5. It is a generator 102 that can be triggered with the aid of a manually operated pushing device 47.
  • the generator 102 differs from the generators 100 and 101 of the previous exemplary embodiments by the manually operable pushing device 47 and the inductive part.
  • Features matching the previous exemplary embodiments are designated by the same reference numerals.
  • the inductive part of the generator 102 has a U-shaped yoke 48 made of layered sheets of an iron-cobalt alloy.
  • the yoke 48 connects to the housing 2 with the stationary magnets 9 and 10 in such a way that its two legs 49 and 50 form the side walls of the positive guide 3.
  • the positive guide 3 simultaneously encloses the gap 51 between the two legs 49 and 50, which is closed by the inducing magnet 4 during the generation of the energy pulse.
  • An induction coil is pushed onto one leg of the yoke 48, the induction coil 53 onto the leg 49 and the induction coil 54 onto the leg 50.
  • the two coils 53 and 54 are connected in series, which is why only two connections, 52 a and 52 b, are provided.
  • the pushing device 47 is composed of the actuating device 14 and the manual release 55.
  • the illustrated manual release 55 shows only one of the possible designs.
  • the housing 2 and the yoke 48 of the generator 102 are held on a carrier 56, to which a handle 57 connects.
  • a lever 59 is rotatably mounted in a recess 58.
  • Its fulcrum 60 lies in the transition from the carrier 56 to the handle 57
  • Lever arm 61 carries at its end a half cylinder 62 which bears against another half cylinder 63 which is located on the end of the rod 16.
  • the lever arm 61 is in its starting position on a bolt 64 as a stop.
  • the other lever arm 65 is pulled to actuate the pushing device 47 by the fingers of the operator in the direction of the arrow 66, whereby the lever arm 61 moves in the direction of the arrow 67. As a result, the rod 16 is displaced in the direction of arrow 68.
  • the inducing magnet 4 With a corresponding lever transmission, which is matched to the force which acts on the inducing magnet 4 through the magnetic field 24, the inducing magnet 4 is moved from its starting position 15, against the force of the magnetic field 24, in the direction of the induction coils 53 and 54 .
  • the lever arm 61 has been pivoted so far that the half cylinder 62 has reached the position 69 shown in broken lines, the inducing magnet 4 has already overcome the point of symmetry 26 of the magnetic field 24 on its path 27.
  • FIG. 4 shows the situation that the inducing magnet 4 is located in the point of symmetry 26 of the magnetic field 24.
  • the structure of the magnetic fields 24 of the stationary magnets 9 and 10 and 28 of the inducing magnet 4 shows that there is an indifferent balance in the forces acting on the inducing magnet 4. Therefore, with further actuation of the lever arm 65 of the manual release 55, a small force is sufficient to move the rod 16 in the direction of arrow 68 and to push the inducing magnet 4 beyond the point of symmetry 26. Then the repulsive force of the magnetic field 24 acts on the inducing magnet 4, but now in the direction of the induction coils 53 and 54.
  • FIG. 5 shows the end position of the induction magnet 4 after closing the gap 51 between the two legs 49 and 50 of the U-shaped yoke 48 and generation of the electrical energy pulse.
  • the spring 20 has braked the movement of the inducing magnet 4 before it reaches its end position. If the generator 102 is reused, the spring 20 avoids an unbraked impact of the induction magnet 4 on the induction coils 53 and 54 and thus damage to the coils and the magnet. It can be seen from FIG. 5 that the stationary magnets 9 and 10 are arranged at such a distance from the U-shaped yoke 48 of the induction coils 53 and 54 that the inducing magnet shown in position 4 'already enters the gap 51 , while it covers the stationary magnets 9 and 10 at most up to half.
  • FIG. 1 A further exemplary embodiment for a generator 103 is shown in FIG.
  • the inductive part, the arrangement of the induction coils 53 and 54 and the U-shaped yoke 48 correspond to the exemplary embodiment of the generator 102 according to FIGS. 3 to 5. More, with the
  • the generator 103 differs from the exemplary embodiments of the generators 100, 101 and 102 in that the inducing magnet 4 is arranged in its starting position 15 between the two stationary magnets 70 and 71.
  • the poles of the stationary magnets 70 and 71 and the poles of the inducing magnet 4 are assigned to one another in such a way that the north and south poles face each other.
  • the assignment of the magnetic poles is therefore exactly the opposite of that in the generators of the previous exemplary embodiments.
  • the inducing one Magnet 4 is thus held in its starting position by the attractive force of the magnetic field 73 built up by the stationary magnets 70 and 71.
  • the inducing magnet 4 To trigger the generator 103, the inducing magnet 4 must first be released from the attractive force of the magnetic field 73 of these magnets 70 and 71 and then accelerated in the direction of the induction coils 53 and 54.
  • the actuation device 14 is provided, which, as not shown here, can also be coupled to a manual actuation, as is shown in the exemplary embodiment of the generator 102, FIGS. 3 to 5.
  • the actuating device 14 If a force acts on the actuating device 14 in the direction of the arrow 72 that is large enough to overcome the acting attractive force of the stationary magnets 70 and 71 on the inducing magnet 4, the latter is pushed along the path 27 into the gap 51 of the U-shaped yoke 48 .
  • the magnetic lines of the inducing magnet 4 are collected in the yoke 48 and the magnetic field is thereby strengthened.
  • the inducing magnet 4 is attracted by the magnetic field that it builds up in the yoke 48 and accelerates into the gap 51 to close the core and thereby the magnetic circuit.
  • the magnetic field in the induction coils 53 and 54 changes and a voltage is induced which can be tapped at the terminals 52 a and 52 b.
  • the inducing magnet is only attracted and accelerated by the magnetic field it has built up, its speed with which it acts on the gap 51 of the yoke 48 is lower than when it is additionally accelerated by the repulsive action of the magnetic field of the stationary magnets .

Abstract

Les générateurs servant à produire des impulsions d'énergie électrique de courte durée, également appelés ? générateurs de chocs ?, sont utilisés par exemple pour amorcer un gaz dans des brûleurs à gaz ou comme fusée percutante pour des projectiles. La vitesse élevée requise pour modifier la densité de flux magnétique dans le temps peut être produite en général uniquement au moyen de forces élevées, comme celles qui sont produites par exemple dans le cas de fusées percutantes. Les générateurs à commande manuelle, en général, ne sont pas en mesure d'induire des tensions relativement élevées, car les forces appliquées sont limitées. Les fusées percutantes doivent être protégées contre un actionnement non intentionnel. Selon l'invention, avant la production de l'impulsion d'énergie électrique, l'aimant inducteur se trouve dans une position initiale à l'écart de la bobine d'induction. Au moins un aimant, placé de façon stationnaire en amont de la bobine d'induction, produit un champ magnétique dont la polarité est orientée de sorte que ce champ représente pour l'aimant inducteur un obstacle placé en amont de la bobine d'induction. Il est prévu des éléments permettant à l'aimant inducteur de franchir ce champ magnétique en direction de la bobine d'induction.
EP99915758A 1998-04-25 1999-04-08 Generateur servant a produire des impulsions d'energie electrique de courte duree Withdrawn EP1075729A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19818580 1998-04-25
DE1998118580 DE19818580A1 (de) 1998-04-25 1998-04-25 Gasgenerator zur Erzeugung kurzzeitiger elektrischer Energieimpulse
PCT/EP1999/002478 WO1999056382A1 (fr) 1998-04-25 1999-04-08 Generateur servant a produire des impulsions d'energie electrique de courte duree

Publications (1)

Publication Number Publication Date
EP1075729A1 true EP1075729A1 (fr) 2001-02-14

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Application Number Title Priority Date Filing Date
EP99915758A Withdrawn EP1075729A1 (fr) 1998-04-25 1999-04-08 Generateur servant a produire des impulsions d'energie electrique de courte duree

Country Status (4)

Country Link
EP (1) EP1075729A1 (fr)
CA (1) CA2329993A1 (fr)
DE (1) DE19818580A1 (fr)
WO (1) WO1999056382A1 (fr)

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WO1999056382A1 (fr) 1999-11-04
CA2329993A1 (fr) 1999-11-04
DE19818580A1 (de) 1999-10-28

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