EP3350905A1 - Magnetic target - Google Patents

Magnetic target

Info

Publication number
EP3350905A1
EP3350905A1 EP15813475.9A EP15813475A EP3350905A1 EP 3350905 A1 EP3350905 A1 EP 3350905A1 EP 15813475 A EP15813475 A EP 15813475A EP 3350905 A1 EP3350905 A1 EP 3350905A1
Authority
EP
European Patent Office
Prior art keywords
support
magnet
target
target according
shaft
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Withdrawn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
EP15813475.9A
Other languages
German (de)
French (fr)
Inventor
Vincent Guibet
Chiyuan Chen
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.)
SC2N SAS
Original Assignee
SC2N SAS
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 SC2N SAS filed Critical SC2N SAS
Publication of EP3350905A1 publication Critical patent/EP3350905A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • 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
    • H02K7/003—Couplings; Details of shafts

Definitions

  • the present invention relates to a magnetic target in particular arranged to be mounted on a rotary component.
  • the aim of the invention is to improve this type of magnetic target.
  • the invention thus relates in particular to a magnetic target, in particular arranged to be mounted on a rotary component, this component notably being a shaft of a rotor, this target comprising:
  • the magnet is pre-mounted in the sense that the magnet is mounted on the support before the target is assembled on the rotating component.
  • the assembly of the target on the rotary component is simple because the assembly can be done with a reduced number of steps.
  • the outer face of the support has a constant section.
  • the shape of the support can thus be simple and the support be easy to manufacture.
  • the support comprises, if desired, a cylindrical wall arranged to cooperate with the rotary component, and the magnet is placed against this cylindrical wall, outside the support.
  • the outer face of the cylindrical wall of the support has a circular section, and the outer face diameter is constant over the entire height of the support.
  • the support has a housing to allow its implementation on the rotary component.
  • This housing has a cylindrical shape of revolution.
  • the housing has an asymmetrical shape, in particular an oval shape or with at least one straight edge, for example being polygonal, in particular rectangular or square.
  • the support has a thickness of less than 5 mm, in particular less than 2 mm, being preferably between 0.5 and 1 mm.
  • the target can thus be relatively compact, and the centrifugal forces applied to the target and in particular the magnet are reduced.
  • the support is made of steel, for example by stamping.
  • the magnet is overmolded on the support.
  • the magnet has a thickness less than
  • the magnet comprises an elastomer base, in particular NBR or HNBR.
  • the magnet has a ferrite or a rare earth.
  • the magnetization of the encoder is performed after mounting on the rotor to ensure good angular indexing between the poles of the magnet and the rotor.
  • the magnet is pre-magnetized, especially before being fixed on the rotating component.
  • the support comprises a transverse face, in particular substantially flat, and the magnet extends at least partially on the transverse face of the support.
  • the invention also relates to a rotating electrical machine comprising a rotor provided with a shaft, a target as described above.
  • the rotor shaft advantageously has a diameter of less than 15 mm, being in particular of about 8 mm.
  • the machine comprises a sensor, in particular Hall effect, arranged to cooperate with the magnetic target, in particular to generate a signal representative of the shaft, including the angular position of the shaft.
  • the machine is arranged so that the signal produced by means of the sensor and the target is used to control the injection of electric current into the winding of a stator. the machine according to the position of the rotor relative to the stator.
  • the machine is preferably arranged to compress air, in particular air intended to supply an internal combustion engine of a motor vehicle.
  • the speed of rotation of the rotor is capable of reaching 50,000 revolutions per minute, in particular 70,000 revolutions per minute, for example 75,000 revolutions per minute.
  • the machine is arranged so that the temperature around the target can reach 150 ° C.
  • the invention also relates to a turbo comprising the machine as mentioned above.
  • FIG. 1 is a schematic and partial sectional view of a machine according to an embodiment of the invention.
  • a turbo 1 comprising an electric machine 2, turbo associated with an internal combustion engine of a motor vehicle.
  • the machine 2 is arranged to compress air intended to feed an internal combustion engine of a motor vehicle.
  • the turbo 1 comprises, for this purpose, a volute, not shown, for driving the air.
  • the rotating electrical machine 2 comprises a rotor 5 provided with a shaft 6 and a target 7 as described below.
  • the rotor shaft 6 has, in the example described, a diameter of about 8 mm.
  • the machine 2 comprises a Hall effect sensor 8 arranged to cooperate with the magnetic target 7 in order to generate a signal representative of the shaft 6, namely the angular position of the shaft 6.
  • the machine 2 is arranged so that the signal produced with the aid of the sensor 8 and the target 7 is used to control the injection of electrical current into the winding of a stator 9 of the machine as a function of the position of the machine. rotor 5 with respect to the stator 9.
  • the magnetic target 7 comprises:
  • the magnet 1 1 is pre-mounted in the sense that the magnet is mounted on the support 10 before the target is assembled on the rotating component.
  • the outer face 12 of the support 10 has a cylindrical shape.
  • the support 10 has a section of constant thickness.
  • the support comprises a cylindrical wall 13 arranged to cooperate with the rotary component 6, and the magnet 1 1 is placed against this cylindrical wall 13, outside the support.
  • the outer face 12 of the cylindrical wall 13 of the support has a circular section, and the outer face diameter 12 is constant over the entire height of the support, height measured along the axis of rotation X of the shaft 6.
  • the support 10 comprises a housing 15 to allow its placement on the rotor 6.
  • This housing 15 has a cylindrical shape of revolution.
  • the support has a thickness of between 0.5 and 1 mm.
  • the support 10 is made of steel, for example by stamping.
  • the magnet 1 1 is overmolded on the support 10.
  • the magnet 1 1 has a thickness of between 2 mm and 2.5 mm, or even 1 mm.
  • the magnet comprises an elastomer base, in particular NBR or HNBR, and a ferrite or a rare earth.
  • the magnet 1 1 is pre-magnetized, in particular before being fixed on the rotary component.
  • the support 10 has a transverse face 17, in particular substantially flat, and the magnet extends entirely on the transverse face of the support.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

The invention relates to a magnetic target (7) in particular arranged so as to be mounted on a rotary component, this component being in particular a shaft of a rotor, this target comprising: - a support (10), - a magnet (11) pre-mounted on the support.

Description

Cible magnétique  Magnetic target
La présente invention concerne une cible magnétique notamment agencée pour être montée sur un composant rotatif. The present invention relates to a magnetic target in particular arranged to be mounted on a rotary component.
L'invention vise à améliorer ce type de cible magnétique.  The aim of the invention is to improve this type of magnetic target.
L'invention a ainsi notamment pour objet une cible magnétique notamment agencée pour être montée sur un composant rotatif, ce composant étant notamment un arbre d'un rotor, cette cible comportant :  The invention thus relates in particular to a magnetic target, in particular arranged to be mounted on a rotary component, this component notably being a shaft of a rotor, this target comprising:
un support,  a support,
- un aimant pré-monté sur le support.  - a magnet pre-mounted on the support.
Au sens de l'invention, l'aimant est pré-monté dans le sens où l'aimant est monté sur le support avant que la cible ne soit assemblée sur le composant rotatif.  For the purposes of the invention, the magnet is pre-mounted in the sense that the magnet is mounted on the support before the target is assembled on the rotating component.
Grâce à l'invention, l'assemblage de la cible sur le composant rotatif est simple car l'assemblage peut être fait avec un nombre réduit d'étapes.  Thanks to the invention, the assembly of the target on the rotary component is simple because the assembly can be done with a reduced number of steps.
Avantageusement la face extérieure du support présente une section constante.  Advantageously, the outer face of the support has a constant section.
La forme du support peut ainsi être simple et le support être facile à fabriquer.  The shape of the support can thus be simple and the support be easy to manufacture.
Le support comporte, si on le souhaite, une paroi cylindrique agencée pour coopérer avec le composant rotatif, et l'aimant est placé contre cette paroi cylindrique, à l'extérieur du support.  The support comprises, if desired, a cylindrical wall arranged to cooperate with the rotary component, and the magnet is placed against this cylindrical wall, outside the support.
La face extérieure de la paroi cylindrique du support présente une section circulaire, et le diamètre de face extérieure est constant sur toute la hauteur du support.  The outer face of the cylindrical wall of the support has a circular section, and the outer face diameter is constant over the entire height of the support.
Le support comporte un logement pour permettre sa mise en place sur le composant rotatif.  The support has a housing to allow its implementation on the rotary component.
Ce logement présente une forme cylindrique de révolution. En variante, le logement présente une forme asymétrique, notamment une forme ovale ou avec au moins une arête droite, étant par exemple polygonale, notamment rectangulaire ou carrée. This housing has a cylindrical shape of revolution. In a variant, the housing has an asymmetrical shape, in particular an oval shape or with at least one straight edge, for example being polygonal, in particular rectangular or square.
Ceci permet, notamment lorsque l'aimant est pré-magnétisé, de pouvoir indexer angulairement la cible par rapport au composant rotatif lors de son assemblage sur ce composant rotatif.  This makes it possible, especially when the magnet is pre-magnetized, to be able to index the target angularly with respect to the rotary component when it is assembled on this rotary component.
De préférence, le support présente une épaisseur inférieure à 5 mm, notamment inférieure à 2 mm, étant de préférence comprise entre 0,5 et 1 mm.  Preferably, the support has a thickness of less than 5 mm, in particular less than 2 mm, being preferably between 0.5 and 1 mm.
La cible peut ainsi être relativement compacte, et les forces centrifuges appliquées sur la cible et notamment l'aimant sont réduites.  The target can thus be relatively compact, and the centrifugal forces applied to the target and in particular the magnet are reduced.
Dans un exemple de mise en œuvre de l'invention, le support est réalisé en acier, par exemple par emboutissage.  In an exemplary implementation of the invention, the support is made of steel, for example by stamping.
De préférence, l'aimant est surmoulé sur le support.  Preferably, the magnet is overmolded on the support.
Le cas échéant, l'aimant présente une épaisseur inférieure à If necessary, the magnet has a thickness less than
5mm, notamment 2mm, voire 1 mm. 5mm, especially 2mm, even 1mm.
Avantageusement l'aimant comporte une base en élastomère, notamment NBR ou HNBR.  Advantageously, the magnet comprises an elastomer base, in particular NBR or HNBR.
Si on le souhaite, l'aimant comporte une ferrite ou une terre rare. De préférence, l'aimantation de l'encodeur est réalisée après montage sur le rotor afin de garantir une bonne indexation angulaire entre les pôles de l'aimant et le rotor.  If desired, the magnet has a ferrite or a rare earth. Preferably, the magnetization of the encoder is performed after mounting on the rotor to ensure good angular indexing between the poles of the magnet and the rotor.
En variante, l'aimant est pré-magnétisé, notamment avant d'être fixé sur le composant rotatif.  Alternatively, the magnet is pre-magnetized, especially before being fixed on the rotating component.
Le cas échéant, le support comporte une face transversale, notamment sensiblement plane, et l'aimant s'étend au moins partiellement sur la face transversale du support.  Where appropriate, the support comprises a transverse face, in particular substantially flat, and the magnet extends at least partially on the transverse face of the support.
L'invention a également pour objet une machine électrique tournante, comportant un rotor pourvu d'un arbre, une cible telle que décrite ci-dessus. L'arbre de rotor présente avantageusement un diamètre inférieur à 15mm, étant notamment d'environ 8mm. The invention also relates to a rotating electrical machine comprising a rotor provided with a shaft, a target as described above. The rotor shaft advantageously has a diameter of less than 15 mm, being in particular of about 8 mm.
Si on le souhaite la machine comporte un capteur, notamment à effet Hall, agencé pour coopérer avec la cible magnétique, notamment en vue de générer un signal représentatif de l'arbre, notamment de la position angulaire de l'arbre.  If desired, the machine comprises a sensor, in particular Hall effect, arranged to cooperate with the magnetic target, in particular to generate a signal representative of the shaft, including the angular position of the shaft.
Dans un exemple de mise en œuvre de l'invention, la machine est agencée de sorte que le signal produit à l'aide du capteur et de la cible est utilisé pour commander l'injection de courant électrique dans le bobinage d'un stator de la machine en fonction de la position du rotor par rapport au stator.  In an exemplary implementation of the invention, the machine is arranged so that the signal produced by means of the sensor and the target is used to control the injection of electric current into the winding of a stator. the machine according to the position of the rotor relative to the stator.
La machine est de préférence agencée pour comprimer de l'air, air notamment destiné à alimenter un moteur à combustion interne d'un véhicule automobile.  The machine is preferably arranged to compress air, in particular air intended to supply an internal combustion engine of a motor vehicle.
Par exemple la vitesse de rotation du rotor est capable d'atteindre 50 000 tours par minute, notamment 70 000 tours par minute, par exemple 75 000 tours par minute.  For example, the speed of rotation of the rotor is capable of reaching 50,000 revolutions per minute, in particular 70,000 revolutions per minute, for example 75,000 revolutions per minute.
Le cas échéant, la machine est agencée de sorte que la température autour de la cible peut atteindre 150°C.  If necessary, the machine is arranged so that the temperature around the target can reach 150 ° C.
L'invention concerne encore un turbo comportant la machine telle que précitée.  The invention also relates to a turbo comprising the machine as mentioned above.
L'invention sera mieux comprise et d'autres détails, caractéristiques et avantages de l'invention apparaîtront à la lecture de la description suivante faite à titre d'exemple non limitatif en référence au dessin annexé dans lequel : The invention will be better understood and other details, characteristics and advantages of the invention will become apparent on reading the following description given by way of non-limiting example with reference to the accompanying drawings in which:
- la figure 1 est une vue en coupe, schématique et partielle, d'une machine selon un exemple de réalisation de l'invention. On a représenté sur la figure 1 un turbo 1 comportant une machine électrique 2, turbo associé à un moteur à combustion interne d'un véhicule automobile. - Figure 1 is a schematic and partial sectional view of a machine according to an embodiment of the invention. There is shown in Figure 1 a turbo 1 comprising an electric machine 2, turbo associated with an internal combustion engine of a motor vehicle.
La machine 2 est agencée pour comprimer de l'air destiné à alimenter un moteur à combustion interne d'un véhicule automobile.  The machine 2 is arranged to compress air intended to feed an internal combustion engine of a motor vehicle.
Le turbo 1 comporte, à cet effet, une volute, non représentée, pour conduire l'air.  The turbo 1 comprises, for this purpose, a volute, not shown, for driving the air.
La machine électrique tournante 2 comporte un rotor 5 pourvu d'un arbre 6 et une cible 7 telle que décrite ci-dessous.  The rotating electrical machine 2 comprises a rotor 5 provided with a shaft 6 and a target 7 as described below.
L'arbre 6 de rotor présente, dans l'exemple décrit, un diamètre d'environ 8mm.  The rotor shaft 6 has, in the example described, a diameter of about 8 mm.
La machine 2 comporte un capteur à effet Hall 8 agencé pour coopérer avec la cible magnétique 7 en vue de générer un signal représentatif de l'arbre 6, à savoir la position angulaire de l'arbre 6.  The machine 2 comprises a Hall effect sensor 8 arranged to cooperate with the magnetic target 7 in order to generate a signal representative of the shaft 6, namely the angular position of the shaft 6.
La machine 2 est agencée de sorte que le signal produit à l'aide du capteur 8 et de la cible 7 est utilisé pour commander l'injection de courant électrique dans le bobinage d'un stator 9 de la machine en fonction de la position du rotor 5 par rapport au stator 9.  The machine 2 is arranged so that the signal produced with the aid of the sensor 8 and the target 7 is used to control the injection of electrical current into the winding of a stator 9 of the machine as a function of the position of the machine. rotor 5 with respect to the stator 9.
La cible magnétique 7 comporte :  The magnetic target 7 comprises:
- un support 10,  a support 10,
un aimant 1 1 pré-monté sur le support 10.  a magnet 1 1 pre-mounted on the support 10.
L'aimant 1 1 est pré-monté dans le sens où l'aimant est monté sur le support 10 avant que la cible ne soit assemblée sur le composant rotatif.  The magnet 1 1 is pre-mounted in the sense that the magnet is mounted on the support 10 before the target is assembled on the rotating component.
La face extérieure 12 du support 10 présente une forme cylindrique.  The outer face 12 of the support 10 has a cylindrical shape.
Le support 10 présente une section d'épaisseur constante.  The support 10 has a section of constant thickness.
Le support comporte une paroi cylindrique 13 agencée pour coopérer avec le composant rotatif 6, et l'aimant 1 1 est placé contre cette paroi cylindrique 13, à l'extérieur du support. La face extérieure 12 de la paroi cylindrique 13 du support présente une section circulaire, et le diamètre de face extérieure 12 est constant sur toute la hauteur du support, hauteur mesurée suivant l'axe de rotation X de l'arbre 6. The support comprises a cylindrical wall 13 arranged to cooperate with the rotary component 6, and the magnet 1 1 is placed against this cylindrical wall 13, outside the support. The outer face 12 of the cylindrical wall 13 of the support has a circular section, and the outer face diameter 12 is constant over the entire height of the support, height measured along the axis of rotation X of the shaft 6.
Le support 10 comporte un logement 15 pour permettre sa mise en place sur le rotor 6.  The support 10 comprises a housing 15 to allow its placement on the rotor 6.
Ce logement 15 présente une forme cylindrique de révolution. This housing 15 has a cylindrical shape of revolution.
Le support présente une épaisseur comprise entre 0,5 et 1 mm.The support has a thickness of between 0.5 and 1 mm.
Dans un exemple de mise en œuvre de l'invention, le support 10 est réalisé en acier, par exemple par emboutissage. In an exemplary implementation of the invention, the support 10 is made of steel, for example by stamping.
L'aimant 1 1 est surmoulé sur le support 10.  The magnet 1 1 is overmolded on the support 10.
L'aimant 1 1 présente une épaisseur comprise entre 2mm et 2.5 mm, voire 1 mm.  The magnet 1 1 has a thickness of between 2 mm and 2.5 mm, or even 1 mm.
L'aimant comporte une base en élastomère, notamment NBR ou HNBR, et une ferrite ou une terre rare.  The magnet comprises an elastomer base, in particular NBR or HNBR, and a ferrite or a rare earth.
L'aimant 1 1 est pré-magnétisé, notamment avant d'être fixé sur le composant rotatif.  The magnet 1 1 is pre-magnetized, in particular before being fixed on the rotary component.
Le support 10 comporte une face transversale 17, notamment sensiblement plane, et l'aimant s'étend entièrement sur la face transversale du support.  The support 10 has a transverse face 17, in particular substantially flat, and the magnet extends entirely on the transverse face of the support.

Claims

REVENDICATIONS
1 . Cible magnétique (7) notamment agencée pour être montée sur un composant rotatif, ce composant étant notamment un arbre d'un rotor, cette cible comportant : 1. Magnetic target (7), in particular designed to be mounted on a rotary component, this component notably being a shaft of a rotor, this target comprising:
un support (10),  a support (10),
un aimant (1 1 ) pré-monté sur le support.  a magnet (1 1) pre-mounted on the support.
2. Cible selon la revendication précédente, caractérisée par le fait que la face extérieure (12) du support présente une section constante. 2. Target according to the preceding claim, characterized in that the outer face (12) of the support has a constant section.
3. Cible selon l'une des revendications précédentes, caractérisée par le fait que le fait que le support (10) comporte une paroi cylindrique (13) agencée pour coopérer avec le composant rotatif, et l'aimant est placé contre cette paroi cylindrique, à l'extérieur du support. 3. Target according to one of the preceding claims, characterized in that the fact that the support (10) comprises a cylindrical wall (13) arranged to cooperate with the rotary component, and the magnet is placed against this cylindrical wall, outside the support.
4. Cible selon l'une des revendications précédentes, le support comportant un logement (15) pour permettre sa mise en place sur le composant rotatif. 4. Target according to one of the preceding claims, the support having a housing (15) to allow its establishment on the rotary component.
5. Cible selon l'une des revendications précédentes, le support présentant une épaisseur inférieure à 5 mm, notamment inférieure à 2 mm, étant de préférence comprise entre 0,5 et 1 mm. 5. Target according to one of the preceding claims, the support having a thickness of less than 5 mm, especially less than 2 mm, preferably between 0.5 and 1 mm.
6. Cible selon l'une des revendications précédentes, le support étant réalisé en acier. 6. Target according to one of the preceding claims, the support being made of steel.
7. Cible selon l'une des revendications précédentes, l'aimant7. Target according to one of the preceding claims, the magnet
(1 1 ) étant surmoulé sur le support (10). (1 1) being overmolded on the support (10).
8. Cible selon l'une des revendications précédentes, l'aimant présentant une épaisseur inférieure à 5mm, notamment 2mm. 8. Target according to one of the preceding claims, the magnet having a thickness of less than 5mm, especially 2mm.
9. Cible selon l'une des revendications précédentes, l'aimant comportant une base en élastomère, notamment NBR ou HNBR. 9. Target according to one of the preceding claims, the magnet comprising an elastomeric base, in particular NBR or HNBR.
10. Cible selon l'une des revendications précédentes, le support comportant une face transversale (17), notamment sensiblement plane, et l'aimant s'étend au moins partiellement sur la face transversale du support. 10. Target according to one of the preceding claims, the support having a transverse face (17), in particular substantially flat, and the magnet extends at least partially on the transverse face of the support.
1 1 . Machine électrique tournante, comportant un rotor (5) pourvu d'un arbre, une cible selon l'une des revendications précédentes étant monté sur l'arbre. 1 1. Rotating electric machine comprising a rotor (5) provided with a shaft, a target according to one of the preceding claims being mounted on the shaft.
12. Machine selon revendication précédente, comportant un capteur (8), notamment à effet Hall, agencé pour coopérer avec la cible magnétique, notamment en vue de générer un signal représentatif de l'arbre, notamment de la position angulaire de l'arbre. 12. Machine according to the preceding claim, comprising a sensor (8), in particular Hall effect, arranged to cooperate with the magnetic target, in particular to generate a signal representative of the shaft, including the angular position of the shaft.
13. Turbo comportant la machine selon l'une des revendications 12 et 13. 13. Turbo comprising the machine according to one of claims 12 and 13.
14. Procédé pour réaliser une machine selon l'une des revendications 1 1 et 12, comportant l'étape suivante : 14. Process for producing a machine according to one of claims 1 1 and 12, comprising the following step:
- l'aimantation de l'encodeur est réalisée après montage sur le rotor. - The magnetization of the encoder is performed after mounting on the rotor.
EP15813475.9A 2015-09-14 2015-09-14 Magnetic target Withdrawn EP3350905A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR2015/052444 WO2017046457A1 (en) 2015-09-14 2015-09-14 Magnetic target

Publications (1)

Publication Number Publication Date
EP3350905A1 true EP3350905A1 (en) 2018-07-25

Family

ID=54937247

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FR3065849B1 (en) * 2017-04-28 2019-05-03 Valeo Systemes De Controle Moteur ELECTRIC COMPRESSOR

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DE19848081A1 (en) * 1998-09-01 2000-03-02 Mannesmann Vdo Ag Drive device with an actuator
DE102004010947A1 (en) * 2004-03-03 2005-10-06 Carl Freudenberg Kg Angle measuring device and method for its production
FR2875005B1 (en) * 2004-09-06 2006-12-08 Hutchinson Sa MOVEMENT ENCODER, DEVICE COMPRISING SUCH ENCODER AND METHOD FOR MANUFACTURING SUCH ENCODER
DE102011089243A1 (en) * 2011-12-20 2013-06-20 Continental Automotive Gmbh magnetic wheel
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