EP0051702B1 - Solénoide perfectionné - Google Patents

Solénoide perfectionné Download PDF

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Publication number
EP0051702B1
EP0051702B1 EP80303981A EP80303981A EP0051702B1 EP 0051702 B1 EP0051702 B1 EP 0051702B1 EP 80303981 A EP80303981 A EP 80303981A EP 80303981 A EP80303981 A EP 80303981A EP 0051702 B1 EP0051702 B1 EP 0051702B1
Authority
EP
European Patent Office
Prior art keywords
solenoid
armature
sleeve
bore
magnetic material
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.)
Expired
Application number
EP80303981A
Other languages
German (de)
English (en)
Other versions
EP0051702A1 (fr
Inventor
Raymond Noel Quenneville
Dennis Robert Custer
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.)
Jacobs Vehicle Systems Inc
Original Assignee
Jacobs Manufacturing Co
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 Jacobs Manufacturing Co filed Critical Jacobs Manufacturing Co
Priority to EP80303981A priority Critical patent/EP0051702B1/fr
Priority to DE8080303981T priority patent/DE3070590D1/de
Priority to AT80303981T priority patent/ATE13104T1/de
Publication of EP0051702A1 publication Critical patent/EP0051702A1/fr
Application granted granted Critical
Publication of EP0051702B1 publication Critical patent/EP0051702B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures

Definitions

  • This invention relates generally to the field of solenoids and solenoid actuated valves. More specifically, it relates to a solenoid construction which has increased pulling capacity compared with prior art solenoid constructions.
  • a solenoid typically comprises a helically wound coil of insulated wire capable of inducing a directionalized magnetic field when an electric current flows through the coil.
  • the solenoid may be equipped with a movable plunger in the form of an iron rod or bar designed for axial movement with respect to the coil.
  • the force or pull which may be exerted by the solenoid is a function of the current in the coil once the core has become saturated. Prior to saturation, force or pull is proportional to the square of the exciting current.
  • the force or pull of a solenoid may be increased using an ironclad solenoid so as to provide an iron return path for the magnetic flux.
  • the air gaps in the magnetic circuit decrease the force or pulling power of the solenoid increases.
  • the conventional plunger type solenoid as the plunger or armature moves axially into the coil, the air gap in the magnetic circuit decreases and the force or pull of the solenoid increases.
  • the solenoid and armature will have both a primary and a secondary air gap. These gaps will usually be found at opposite ends of the armature and will be of the same magnitude since the solenoid is ordinarily designed to provide essentially no air gap in the fully energized state. The useful travel of the armature is thus equal to approximately half of the total initial air gap.
  • a plunger type armature is disclosed in German DE-A-1173582.
  • This publication is concerned with a solenoid having an anti-buzz feature.
  • this publication provides a spring and a non-magnetic stop device which cants the armature against the pole piece within the solenoid coil when it is de-energized.
  • the canting effect is increased by the asymmetrical magnetic field.
  • the tendency of the armature to vibrate or buzz at low energy levels is overcome.
  • the armature is drawn fully into the coil and rests against the core 5.
  • a sblenoid comprising a solenoid coil disposed within a solenoid body, comprising a sleeve with a bore at least partially therethrough and being disposed in said body at least in part within the inner confines of said coil, an armature of magnetic material freely disposed for movement within an armature chamber formed adjacent one end of the sleeve, and means providing magnetic interconnection between at least the armature, the sleeve the solenoid body and a wall of the armature chamber, characterized in that the sleeve is of magnetic material, that the armature chamber is formed substantially externally of the sleeve, that when the solenoid is in a de-energized state, the armature can normally be spaced from the wall of the armature chamber and from the sleeve forming thereby, a first air gap with the wall of the armature chamber and a second air gap with said sleeve, and
  • the prior art reciprocable armature is replaced by a relatively unrestrained magnetically permeable, preferably generally flat armature member which may be in the form of a disc.
  • the armature may be unitary or it may be split.
  • the armature may moreover constitute a part of a valve or may directly or indirectly actuate a valve member. Where the armature member indirectly actuates a valve member, it may do so through a pin which is preferably made of non-magnetic material or material of relatively low permeability.
  • the solenoid of the present invention may include an integral body and valve portion or it may cooperate with an external valve mechanism. Additionally, a portion of the magnetic circuit may be provided by the equipment with which the solenoid is used thereby decreasing both the size and the cost of the solenoid device.
  • the solenoid valve body is indicated generally by the numeral 10 and comprises an upper solenoid portion 12 and a lower valve portion 14.
  • the valve body 10 is symmetrical about its axis and is made from a magnetic material so as to be capable of functioning as part of a magnetic circuit.
  • the body 10 is formed with five concentric and communicating bores.
  • the largest bore is the solenoid bore 16 which is adapted to receive the solenoid coil 18.
  • a second and smaller sleeve bore 20 is positioned concentrically between the solenoid bore 16 and a ball valve bore 22.
  • the fourth and still smaller spring bore 24 communicates between the ball valve bore 22 and a relief aperture 26.
  • the valve portion 14 of the body 10 has threads 28 formed exteriorly thereon to facilitate the attachment of the solenoid valve to a machine (not shown) or other device with which the valve may be used. It will be understood that appropriate gaskets, washers or 0-ring seals (not shown) may also be employed.
  • An annular groove 29 is formed on the outer surface of the valve portion 14 and a diametral passageway 30 communicates between the annular groove 29 and the ball valve bore 22.
  • a second annular groove 32 is formed in the valve portion 14 of the solenoid body 10 and communicates through a second diametral passageway 34 with the sleeve bore 20.
  • the annular groove 32 may, for example, communicate with a source of fluid, such as oil, under pressure while the annular groove 29 communicates with a device requiring a supply of pressurized fluid.
  • a sleeve 36 made from a magnetic material is press fitted into the sleeve bore 20, or otherwise closely fitted to the sleeve bore 20, and extends upwardly to a point near the top of the solenoid body 10.
  • the sleeve 36 is provided with an axial bore 38 which contains an enlarged region 40 at the lower end thereof.
  • An annular groove 42 is formed on the outside surface of the sleeve 36 so as to register with the diametral passageway 34 and a diametral passageway 44 communicates between the annular groove 42 and the enlarged region 40 of the axial bore 38.
  • a ball valve 46 is located in the ball valve bore 22 and biased by a spring 48 against a seat 50 formed in the lower end of the sleeve 36 by the enlarged region 40 of the axial bore 38.
  • the spring 48 is seated in the spring bore 24.
  • the solenoid coil 18 may be sealed into the solenoid portion 12 of the solenoid body 10 by appropriate potting material 52.
  • One terminal 54 of the solenoid coil 18 may be connected electrically to the solenoid portion 12 of the solenoid body 10 which, in this event, would be appropriately grounded, while the other terminal 56 of the solenoid coil 18 carries a screw 58 to connect the solenoid coil 18 to an appropriate electrical circuit (not shown).
  • external terminals for both ends of the solenoid coil may also be provided.
  • An annular cap 60 made from a magnetic material is affixed to the solenoid portion 12 of the body 10, for example, by crimping a thin wall portion 62 of the body 10 over the rim of the cap 60.
  • the thin wall portion 62 thus provides a magnetic circuit means to interconnect the annular cap 60 and the solenoid portion 12 of the body 10 which, in turn, is in magnetic connection with the sleeve 36.
  • the upper portion of the cap 60 is preferably star shaped and is adapted to be engaged by a standard 12-point socket wrench to facilitate tightening of the solenoid body 10 into a threaded seat (not shown).
  • the cap 60 may be designed to be engaged by other types of spanner wrenches or equivalent tightening means may be formed on the exterior surface of the solenoid portion 12 of the body 10.
  • an insert 64 made from a non-magnetic material is fitted into the anular cap 60. While the insert 64 is illustrated in Figure 2 as having a large central orifice, it may be desirable to reduce the size of the orifice to inhibit introduction of foreign material into the armature chamber or to eliminate the orifice if no venting is desired.
  • a drive pin 66 preferably formed from a non-magnetic material, is mounted for reciprocating movement within the axial bore 38 of the sleeve 36 and is of such length as to contact the ball valve 46 at its lower end and an armature member 68 at its upper end.
  • the drive pin 66 pushes the armature member 68 upwardly and closely adjacent to the lower surface of the insert 64. It will be understood that the drive pin 66 is not affixed to either the ball valve 46 or the armature member 68.
  • the armature member 68 is made from a magnetic material and is slightly smaller than the inside dimension of the annular cap 60 which defines an armature chamber. As shown in Figures 1 and 2, the armature member 68 is, preferably, disc shaped and loosely located in the armature chamber of the annular cap 60. It will thus be apparent that the armature member 68 is freely moveable, i.e., relatively unrestrained, and may have components of motion with respect to the drive pin 66 which comprise translation or rotation or both. In order to accomplish this motion, the maximum dimension of the armature must be less than the inside dimension of the armature chamber, the precise amount of the lateral clearance not being critical.
  • the magnetic circuit includes the solenoid portion 12 of the body 10, the thin wall portion 62 of the body 10, the sleeve 36, the armature member 68 and the annular cap 60.
  • two air gaps are initially present, a lateral one between the armature member and the inside wall of the annular cap 60 and an axial gap between the armature and the upper end of the sleeve. Because there is relatively little resistance to lateral movement of the armature, immediately upon passage of a current through the coil 18, the resulting magnetic field will exert a force on the armature member 68 which will cause it to slide relative to the drive pin 66 until contact is made between the armature member 68 and a point on the internal wall of the cap 60.
  • the armature member 68 may fortuitously already be in contact with the internal peripheral wall of the cap 60. In either event, the practical effect is that the magnetic circuit effectively eliminates one of the air gaps leaving thereby only a single air gap the gap between the armature member 68 and the sleeve 36.
  • Figures 3A-3D show, schematically, the movement of the armature member 68 and drive pin 66 when electrical current is caused to flow in the coil 18.
  • Figure 3A represents the general condition of the armature member 68 when no current is flowing in the coil 18. Under this condition, the spring 48 will urge the ball valve 46 against its seat 50 and push the drive pin 66 upwardly. If pressurized hydraulic fluid is present above the ball valve 46 in the regions identified by the numerals 32, 34, 40,42 and 44, (in Figure 2), fluid pressure will also act on the end of the drive pin 66 forcing it upwardly until the drive pin 66 holds the armature member 68 against the insert 64 as suggested by the arrow 70 in Figure 3A.
  • the gap 74 will be substantially closed as shown in Figure 3D as the drive pin 66 reaches the limit of its travel. At this point, the gap may be on the order of 0.254 mm.
  • the initial sliding motion of the armature member occurs under substantially frictionless conditions and the initial pivoting action also requires very little force as this motion occurs while the clearance in the system is being taken up.
  • the required operating forces are at a minimum so that the solenoid according to the present invention is a rapid acting device.
  • the tolerance on the dimensions of the armature member and pin and the free travel of the armature member and pin are not critical and therefore the cost of the solenoid may be minimized.
  • the high speed characteristic of the solenoid according to the present invention fits it for use in devices such as a compression relief engine brake where fast and reliable solenoid operations is required.
  • the sleeve member 36' need be modified by providing a bore 38' therein which is offset from the axis of the sleeve by the desired amount.
  • the longer overhanging portion of the armature member 68 i.e., that part to the left of pin 66 as viewed in Figure 8, will be drawn towards the coil 18 first and the shorter portion of ' the armature member 68 is adjacent the pivot point A. Because the pin 66 is located closer to the pivot point A, the mechanical advantage of the armature and pin linkage is increased.
  • the improved, compact solenoid of the present invention can be further modified to operate various associated mechanisms. While it has been illustrated in conjunction with a ball valve in Figure 2, the solenoid may be used with other types of hydraulic or pneumatic devices or to operate electrical switching mechanisms or microswitches. Examples of such further modifications are shown in Figures 5 through 7.
  • FIG. 5 and 6 illustrate a modification of the present invention to provide a combination of a solenoid and valve where the solenoid and valve is integral with the equipment with which it is employed.
  • the machine body 80 formed from a magnetic material has formed therein a bore 82 to accommodate the solenoid valve assembly 84.
  • a somewhat smaller concentric bore 86 is also formed in the machine body 80 to receive, preferably, a pad or disc of non-magnetic material 88.
  • the remainder of the bore 86 functions as an armature chamber and receives the relatively unrestrained armature member 90.
  • the non-magnetic pad or disc 88 may, alternatively be affixed to the armature member 90, if desired. While it is preferred to provide a disc of non-magnetic material 88, such a disc may be replaced by an air gap or may be omitted entirely.
  • the armature member 90 is shown in solid lines in Figure 6 in its unenergized condition while the phantom lines indicate the fully energized position. As shown in Figure 6 the armature member 90 fits loosely or freely in the bore 86 so as to provide a small annular gap between the armature member 90 and the bore 86. It will be appreciated that the machine body 80 forms a portion of the magnetic circuit required for the action of the solenoid assembly 84. This requires that the machine body 80 be formed from a magnetic material.
  • the machine body 80 is formed from a non-magnetic material, such as aluminum, for example, an insert made from a magnetic material, such as iron, could be placed in the machine body 80 in the region of the solenoid assembly to meet the requirements of the magnetic circuit.
  • the solenoid assembly 84 comprises a cylindrical solenoid body portion 92 having a circumferential shoulder 94 to accommodate an O-ring seal 96 which provides a seal between the solenoid body 92 and the bore 82.
  • a sleeve 98 is press fitted or otherwise joined to the solenoid body 92.
  • the sleeve 98 is provided with an axial bore 100, the upper end of which may be tapped to form a connection for a fluid line (not shown).
  • a valve seat 102 may be formed on the opposite or inner end of the sleeve 98.
  • a plate 104 is fitted on the solenoid body 92 in magnetic contact with the sleeve 98 and is fastened to the machine body 80 by a plurality of fasteners 106 so as to complete the magnetic circuit between the sleeve member 98 and the machine body 80 and function as a magnetic circuit means.
  • a solenoid coil 108 is placed in the solenoid body 92 and sealed in place by appropriate potting material 110.
  • One terminal 112 of the solenoid coil 108 extends upwardly through the potting material 110 while the other terminal 114 may be grounded to the plate 104.
  • a passageway 116 in the machine body 80 communicates between the bore 82 and a portion of the machine (not shown) requiring an intermittent supply of fluid.
  • the solenoid valve of the present invention is normally open in the unenergized state and fluid entering the bore 100 may pass freely through the bore 100, the bore 82 and thence through the passage way 116.
  • a magnetic field is created in the magnetic circuit comprising the sleeve 98, the plate 104, the machine body 80 and the armature 90.
  • the magnetic circuit contains two air gaps: (1) the annular gap between the armature member 90 and the bore 86 and (2) the gap between the armature member 90 and the seat 102 on the sleeve 98.
  • the first gap is closed quickly as the armature member 90 slides on the pad 88 until it contacts the bore 86, for example, at point B. Thereafter, the armature member 90 pivots about the point B until the armature member strikes the valve seat 102. Finally, the armature member 90 will come to rest making surface contact with the valve seat 102 to close the bore 100 and prevent further flow of fluid through bore 100. It will be understood that at least the central portion of the upper surface of the armature member 90 and the bottom portion of the sleeve 98 comprising the valve seat 102 must be ground flat so as to provide a fluid-tight closure. If desired, the valve seat 102 may be formed separately from the sleeve 98 and pressed or otherwise attached to the sleeve 98.
  • a light spring preferably formed from a non-magnetic material may be installed to urge the armature member 90 away from the valve seat 102. Such an arrangement may also be used if it is desired to operate the solenoid valve is an inverted position.
  • FIG. 7 A further modification is shown in Figure 7 wherein the solenoid of the present invention is used to operate a plurality of valves.
  • the figure 118 designates a machine body made from a magnetic material such as iron or steel having formed therein a bore 120 which accommodates the solenoid assembly 122.
  • a passageway 124 communicates between a source of fluid (not shown) and the bore 120.
  • Bores 126 and 128 are formed in the machine body 118 and also communicate with the bore 120.
  • Bore 130 communicates between the bore 126 and a first part of the machine body 118 requiring an intermittent supply of fluid while bore 132 communicates between bore 128 and a second part of the machine body 118 requiring an intermittent supply of fluid.
  • a ball valve 134 is positioned in the bore 126 and biased against a seat 136 by a light spring 138 seated in plug 140 threaded into the bore 126.
  • the ball valve 134 is shown in its closed position in solid lines while its open position is indicated by phantom lines.
  • a second ball valve 142 is positioned in the bore 128 and biased against a seat 144 by a light spring 146 seated in a plug 148 threaded into the bore 128. Again, the ball valve 142 is shown in its closed position by solid lines while the open position is indicated by phantom lines.
  • a pin 150 is positioned in the bore 128 between the ball valve 142 and a pad 152 on the armature member 154 which is loosely or freely positioned within the bore 120.
  • a second pad 156 may be formed on the armature member 154 to contact the ball valve 136.
  • the pads 152 and 156 are, preferably, formed from a non-magnetic material.
  • the armature member 154 is shown in its energized position by solid lines and in its unenergized position in phantom lines.
  • the solenoid assembly 122 comprises a cylindrical body portion 158 having a circumferential shoulder 160 adapted to carry an O-ring seal 162 which seals the solenoid body 158 against the machine body bore 120.
  • the solenoid body 158 is affixed to a plate 164 which provides magnetic circuit interconnection to armature member 154.
  • the plate 164 is formed from a magnetic material which plate is fastened to the machine body 118 also of magnetic material by a plurality of screws 166.
  • a core or sleeve 168 formed from a magnetic material is press fitted or otherwise fastened to the body 158 and the plate 164 so as to provide good magnetic contact with the plate 164.
  • Compression spring 172 is designed with a higher spring rate than the sum of the spring rates of springs 138 and 146 so that in the unenergized condition of the solenoid the armature member 154 will normally be positioned as shown in the phantom lines and the ball valves 134 and 142 will be open.
  • a solenoid coil 174 is located in the body 158 and sealed therein by appropriate potting material 176.
  • One terminal 178 of the solenoid coil 174 may conveniently be grounded to the plate 164 while the other terminal 180 extends upwardly through the potting material 176.
  • a magnetic field will be established in the magnetic circuit which comprises the machine body 118, the plate 164, the sleeve 168 and the armature 154.
  • the armature member 154 will first slide laterally to close the annular gap between it and the inner peripheral edge of the bore 120. Thereafter, the armature member 154 will pivot about the point of contact as previously described and finally come to rest against the lower side of the solenoid body 158.
  • pads 152, 156 have been described, it will be understood that a thin layer of non-magnetic material may be placed on the lower surface of the armature member 154. If the armature member 154 is disc shaped, it may be desirable to combine the pads 152, 156 into a single annulus or circular pad.
  • ball valve 142 is separated from the armature member 154 by the pin 150 while no similar pin is used in conjunction with ball valve 134. It will be understood that both valves may utilize either construction as may be desired. Moreover, more than two valves may be controlled by the solenoid assembly 122 provided that the spring rate of spring 172 exceeds the combined rate of the ball valve springs. Finally, while ball valves have been described and illustrated, other types of valves such as poppet valves, leaf valves or sliding or spool valves could be substituted for the ball valves.
  • FIG. 7 The embodiment of the invention shown in Figure 7 is particularly desirable for use in the operation of a compression relief engine brake of the type disclosed in U.S. patent 3,220,392, for example, where both a solenoid and a control valve are required and a high-speed but compact and reliable system is desired.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Valve Device For Special Equipments (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Claims (12)

1. Electro-aimant comprenant une bobine d'électroaimant (18, 108 ou 174) qui est disposée à l'intérieur d'un corps d'électro-aimant (10, 92, 158) comprenant un manchon (36, 98 ou 168) qui présente un alésagele traversant au moins partiellement et qui est disposé dans ce corps, au moins en partie, à l'intérieur des limites intérieures de la bobine, une armature de matériau magnétique (68, 90 ou 154) qui est disposée de manière à pouvoir se déplacer librement à l'intérieur d'une chambre d'armature qui est ménagée au voisinage de l'une des extrémités du manchone, et des moyens (62, 104 ou 164) qui fournissent une interconnexion magnétique entre au moins l'armature, le manchon, le corps d'électro-aimant et une paroi de la chambre d'armature, caractérisé en ce que le manchon (36, 98 ou 168) est en matériau magnétique, en ce que la chambre d'armature est réalisée essentiellement à l'extérieur du manchon, en ce que, lorsque l'électro-aimant se trouve dans un état hors tension, l'armature (68, 90 ou 154) peut normalement être située à distance de la paroi de la chambre d'armature et du manchon, formant ainsi un premier entrefer avec cette paroi de la chambre d'armature et un second entrefer avec ce manchon, et en ce que, lorsque l'électroaimant est mis sous tension, l'armature effectue deux mouvements, un premier mouvement, latéral, qui ferme le premier entrefer, suivi d'un second mouvement, de rotation, en direction du manchon, permettant ainsi un fonctionnement plus rapide de l'électro-aimant.
2. Electro-aimant selon la revendication 1, caractérisé en ce que la chambre d'armature est cylindrique et la pièce d'armature (68, 90,154) est en forme de disque.
3. Electro-aimant selon la revendication 1 ou 2, caractérisé en ce que lesdits moyens fournissant une interconnexion comprenant une plaque magnétique (104, 164) qui est fixé audit manchon (98, 168) et à des moyens (80, 118) qui sont réalisés en un matériau magnétique de manière à constituer ladite chambre d'armature.
4. Electro-aimant selon la revendication 3, caractérisé en ce que les moyens d'étanchéité (96, 162) sont disposés entre le corps d'électro-aimant (92, 158) et lesdits moyens (80, 118) dans lesquels est ménagée la chambre d'armature, ces derniers moyens (80, 118) comportant un passage (116, 124) qui communique avec cette chambre d'armature.
5. Electro-aimant selon l'une quelconque des revendications précédentes, caractérisé en ce que le manchone (98) présente un alésage (100) qui le traverse entièrement, un siège de soupape (102) s'étendant circulairement autour de cet alésage à l'extrémité du manchon qui est voisine de l'armature.
6. Electro-aimant selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'alésage (170) ménagé dans le manchon (168) ne s'étend que partiellement à travers celui-ci, des moyens de sollicitation (172) étant disposés dans cet alésage pour repousser l'armature (154) à distance de ce manchon.
7. Electro-aimant selon la revendication 6, caractérisé par au moins un organe de soupape (136) qui est manoeuvré par l'armature et qui communique avec la chambre d'armature.
8. Electro-aimant selon la revendication 1 ou 2, caractérisé en ce qu'un doigt (66) est disposé de manière à se déplacer en va-et-vient à l'intérieur de l'alésage (38) du manchon (36), la chambre d'armature se trouvant dans les limites d'un chapeau (60) qui est fixé sur le corps (12), de manière à présenter un contact magnétique avec celui-ci, l'armature étant disposée à l'intérieur de ce chapeau à une certaine distance de l'extrémité supérieure du manchon et au contact de l'extrémité supérieure dudit doigt.
9. Electro-aimant selon la revendication 8, caractérisé en ce que ce doigt est réalisé en un matériau non magnétique, tandis qu'une couche de matériau non magnétique (64) est disposée à l'intérieur du chapeau.
10. Electro-aimant selon la revendication 9, caractérisé en ce que le chapeau présente une forme annulaire et ladite couche de matière non magnétique est constituée par une pièce rapportée qui est disposée dans la surface intérieure du dessus du chapeau.
11. Electro-aimant selon l'une quelconque des revendications 8 à 10, caractérisé en ce que le manchon est disposé de manière symétrique autour de l'axe de la bobine et en ce que l'alésage de ce manchon est soit situé sur l'axe de celui-ci, soit excentré par rapport à lui.
12. Electro-aimant selon la revendication 1 ou 2, caractérisé en ce que l'armature est subdivisée en deux parties, sensiblement le long d'un axe de symétrie de cette armature.
EP80303981A 1980-11-06 1980-11-06 Solénoide perfectionné Expired EP0051702B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP80303981A EP0051702B1 (fr) 1980-11-06 1980-11-06 Solénoide perfectionné
DE8080303981T DE3070590D1 (en) 1980-11-06 1980-11-06 Improved solenoid
AT80303981T ATE13104T1 (de) 1980-11-06 1980-11-06 Solenoid.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80303981A EP0051702B1 (fr) 1980-11-06 1980-11-06 Solénoide perfectionné

Publications (2)

Publication Number Publication Date
EP0051702A1 EP0051702A1 (fr) 1982-05-19
EP0051702B1 true EP0051702B1 (fr) 1985-05-02

Family

ID=8187294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80303981A Expired EP0051702B1 (fr) 1980-11-06 1980-11-06 Solénoide perfectionné

Country Status (3)

Country Link
EP (1) EP0051702B1 (fr)
AT (1) ATE13104T1 (fr)
DE (1) DE3070590D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3912042A1 (de) * 1988-04-12 1990-01-11 Scholz Joachim Elektromagnet

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB564351A (en) * 1941-08-21 1944-09-25 Landis & Gyr Sa Improved electro-magnetic apparatus with tilting armatures, more especially tilting relays
NL274270A (fr) * 1961-02-06
DE1173582B (de) * 1963-04-18 1964-07-09 Licentia Gmbh Magnetisches Ausloesesystem fuer Schaltgeraete
DE1278609B (de) * 1963-08-09 1968-09-26 Teldix Luftfahrt Ausruestung Elektromagnet mit auf Rollkoerpern gelagertem Anker
DE1464526A1 (de) * 1963-11-09 1969-04-24 Concordia Maschinen U Elek Zit Elektromagnetisch betaetigtes Ventil
US3327264A (en) * 1965-04-23 1967-06-20 Keith S Rodaway Alternating current solenoid construction
AU2397570A (fr) * 1970-01-04 1972-07-06
DE2262247A1 (de) * 1972-12-20 1974-06-27 Teves Gmbh Alfred Elektromagnetisches ventil

Also Published As

Publication number Publication date
EP0051702A1 (fr) 1982-05-19
ATE13104T1 (de) 1985-05-15
DE3070590D1 (en) 1985-06-05

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