FR3025666A1 - MAGNETIC TARGET - Google Patents
MAGNETIC TARGET Download PDFInfo
- Publication number
- FR3025666A1 FR3025666A1 FR1458419A FR1458419A FR3025666A1 FR 3025666 A1 FR3025666 A1 FR 3025666A1 FR 1458419 A FR1458419 A FR 1458419A FR 1458419 A FR1458419 A FR 1458419A FR 3025666 A1 FR3025666 A1 FR 3025666A1
- Authority
- FR
- France
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
L'invention concerne une cible magnétique (7) notamment agencée pour être montée sur un composant rotatif, ce composant étant notamment un arbre d'un rotor, cette cible comportant : - un support (10), - un aimant (11) pré-monté sur le support.The invention relates to a magnetic target (7) in particular arranged 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) with mounted on the support.
Description
1 Cible magnétique 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 rotating component.
L'invention vise à améliorer ce type de cible magnétique. 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 : un support, un aimant pré-monté sur le 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. 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. Avantageusement la face extérieure du support présente une section constante. La forme du support peut ainsi être simple et le support être facile à fabriquer. 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. 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. Le support comporte un logement pour permettre sa mise en place sur le composant rotatif. Ce logement présente une forme cylindrique de révolution.The aim of the invention is to improve this type of magnetic target. The invention thus particularly relates to a magnetic target in particular arranged to be mounted on a rotary component, this component being in particular a shaft of a rotor, this target comprising: a support, a magnet pre-mounted on the support. 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. 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. Advantageously, 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.
3025666 2 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. Ceci permet, notamment lorsque l'aimant est pré-magnétisé, de 5 pouvoir indexer angulairement la cible par rapport au composant rotatif lors de son assemblage sur ce composant rotatif. De préférence, le support présente une épaisseur inférieure à 5 mm, notamment inférieure à 2 mm, étant de préférence comprise entre 0,5 et lmm.Alternatively, the housing has an asymmetrical shape, including an oval shape or with at least one straight edge, for example being polygonal, in particular rectangular or square. This makes it possible, especially when the magnet is pre-magnetized, to index the target angularly relative to the rotary component when it is assembled on this rotary component. Preferably, the support has a thickness of less than 5 mm, especially less than 2 mm, being preferably between 0.5 and 1 mm.
10 La cible peut ainsi être relativement compacte, et les forces centrifuges appliquées sur la cible et notamment l'aimant sont réduites. Dans un exemple de mise en oeuvre de l'invention, le support est réalisé en acier, par exemple par emboutissage. De préférence, l'aimant est surmoulé sur le support.The target can thus be relatively compact, and the centrifugal forces applied on the target and in particular the magnet are reduced. In an exemplary implementation of the invention, the support is made of steel, for example by stamping. Preferably, the magnet is overmolded on the support.
15 Le cas échéant, l'aimant présente une épaisseur inférieure à 5mm, notamment 2mm, voire lmm. Avantageusement l'aimant comporte une base en élastomère, notamment NBR ou HNBR. Si on le souhaite, l'aimant comporte une ferrite ou une terre rare.If necessary, the magnet has a thickness of less than 5 mm, especially 2 mm or even 1 mm. Advantageously, the magnet comprises an elastomer base, in particular NBR or HNBR. If desired, the magnet has a ferrite or a rare earth.
20 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. En variante, l'aimant est pré-magnétisé, notamment avant d'être fixé sur le composant rotatif.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. Alternatively, the magnet is pre-magnetized, especially before being fixed on the rotating component.
25 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. L'invention a également pour objet une machine électrique tournante, comportant un rotor pourvu d'un arbre, une cible telle que décrite 30 ci-dessus.If necessary, 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.
3025666 3 L'arbre de rotor présente avantageusement un diamètre inférieur à 15mm, étant notamment d'environ 8mm. Si on le souhaite la machine comporte un capteur, notamment à effet Hall, agencé pour coopérer avec la cible magnétique, notamment en 5 vue de générer un signal représentatif de l'arbre, notamment de la position angulaire de l'arbre. Dans un exemple de mise en oeuvre 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 10 bobinage d'un stator de la machine en fonction de la position du rotor par rapport au 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 rotor shaft advantageously has a diameter of less than 15 mm, being in particular of about 8 mm. 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, in particular the angular position of the shaft. 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. of the machine depending on the position of the rotor with respect 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.
15 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. Le cas échéant, la machine est agencée de sorte que la température autour de la cible peut atteindre 150°C.For example, the rotation speed 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. If necessary, the machine is arranged so that the temperature around the target can reach 150 ° C.
20 L'invention concerne encore un turbo comportant la machine telle que précitée. L'invention sera mieux comprise et d'autres détails, caractéristiques et avantages de l'invention apparaîtront à la lecture de la 25 description suivante faite à titre d'exemple non limitatif en référence au dessin annexé dans lequel : - la figure 1 est une vue en coupe, schématique et partielle, d'une machine selon un exemple de réalisation de l'invention.The invention further relates to a turbo comprising the machine as aforesaid. 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 nonlimiting example with reference to the appended drawing in which: FIG. sectional view, schematic and partial, of a machine according to an exemplary embodiment of the invention.
3025666 4 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. La machine 2 est agencée pour comprimer de l'air destiné à 5 alimenter un moteur à combustion interne d'un véhicule automobile. Le turbo 1 comporte, à cet effet, une volute, non représentée, pour conduire l'air. La machine électrique tournante 2 comporte un rotor 5 pourvu d'un arbre 6 et une cible 7 telle que décrite ci-dessous.FIG. 1 shows 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 for supplying 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.
10 L'arbre 6 de rotor présente, dans l'exemple décrit, un diamètre d'environ 8mm. 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 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.
15 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. La cible magnétique 7 comporte : 20 un support 10, un aimant 11 pré-monté sur le support 10. L'aimant 11 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 machine 2 is arranged so that the signal produced by the sensor 8 and the target 7 is used to control the injection of electric current into the winding of a stator 9 of the machine according to the position. of the rotor 5 with respect to the stator 9. The magnetic target 7 comprises: a support 10, a magnet 11 pre-mounted on the support 10. The magnet 11 is pre-mounted in the direction in which the magnet is mounted on the support 10 before the target is assembled on the rotating component.
25 La face extérieure 12 du support 10 présente une forme cylindrique. Le support 10 présente une section d'épaisseur constante. Le support comporte une paroi cylindrique 13 agencée pour coopérer avec le composant rotatif 6, et l'aimant 11 est placé contre cette paroi cylindrique 13, à l'extérieur du support.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 11 is placed against this cylindrical wall 13, outside the support.
3025666 5 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 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, the height measured along the axis of rotation X of the shaft 6.
5 Le support 10 comporte un logement 15 pour permettre sa mise en place sur le rotor 6. Ce logement 15 présente une forme cylindrique de révolution. Le support présente une épaisseur comprise entre 0,5 et 1 mm. Dans un exemple de mise en oeuvre de l'invention, le support 10 10 est réalisé en acier, par exemple par emboutissage. L'aimant 11 est surmoulé sur le support 10. L'aimant 11 présente une épaisseur comprise entre 2mm et 2.5 mm, voire 1mm. L'aimant comporte une base en élastomère, notamment NBR ou 15 HNBR, et une ferrite ou une terre rare. L'aimant 11 est pré-magnétisé, notamment avant d'être fixé sur le composant rotatif. Le support 10 comporte une face transversale 17, notamment sensiblement plane, et l'aimant s'étend entièrement sur la face transversale 20 du support.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. In an exemplary implementation of the invention, the support 10 is made of steel, for example by stamping. The magnet 11 is overmolded on the support 10. The magnet 11 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 11 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 20 of the support.
Claims (14)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1458419A FR3025666B1 (en) | 2014-09-09 | 2014-09-09 | MAGNETIC TARGET |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1458419 | 2014-09-09 | ||
| FR1458419A FR3025666B1 (en) | 2014-09-09 | 2014-09-09 | MAGNETIC TARGET |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3025666A1 true FR3025666A1 (en) | 2016-03-11 |
| FR3025666B1 FR3025666B1 (en) | 2019-05-17 |
Family
ID=52102790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1458419A Expired - Fee Related FR3025666B1 (en) | 2014-09-09 | 2014-09-09 | MAGNETIC TARGET |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3025666B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346696A (en) * | 2016-05-04 | 2017-11-14 | 法雷奥电机控制系统公司 | For the magnetic part of Hall sensor, include its electric component/booster |
| WO2020207788A1 (en) * | 2019-04-11 | 2020-10-15 | Robert Bosch Gmbh | Sensor for a magnetic measuring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19848081A1 (en) * | 1998-09-01 | 2000-03-02 | Mannesmann Vdo Ag | Drive device with an actuator |
| US20050194968A1 (en) * | 2004-03-03 | 2005-09-08 | Benno Schmied | Angle-measurement device and method for fabrication thereof |
| EP1632752A1 (en) * | 2004-09-06 | 2006-03-08 | Hutchinson | Displacement encoder, device including such encoder and manufacturing method of such encoder |
| DE102011089243A1 (en) * | 2011-12-20 | 2013-06-20 | Continental Automotive Gmbh | magnetic wheel |
| FR2986676A1 (en) * | 2012-02-03 | 2013-08-09 | Bosch Gmbh Robert | ELECTRIC MACHINE, IN PARTICULAR FOR THE DRIVE DEVICE OF A MOTOR VEHICLE |
-
2014
- 2014-09-09 FR FR1458419A patent/FR3025666B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19848081A1 (en) * | 1998-09-01 | 2000-03-02 | Mannesmann Vdo Ag | Drive device with an actuator |
| US20050194968A1 (en) * | 2004-03-03 | 2005-09-08 | Benno Schmied | Angle-measurement device and method for fabrication thereof |
| EP1632752A1 (en) * | 2004-09-06 | 2006-03-08 | Hutchinson | Displacement encoder, device including such encoder and manufacturing method of such encoder |
| DE102011089243A1 (en) * | 2011-12-20 | 2013-06-20 | Continental Automotive Gmbh | magnetic wheel |
| FR2986676A1 (en) * | 2012-02-03 | 2013-08-09 | Bosch Gmbh Robert | ELECTRIC MACHINE, IN PARTICULAR FOR THE DRIVE DEVICE OF A MOTOR VEHICLE |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346696A (en) * | 2016-05-04 | 2017-11-14 | 法雷奥电机控制系统公司 | For the magnetic part of Hall sensor, include its electric component/booster |
| EP3244167A1 (en) | 2016-05-04 | 2017-11-15 | Valeo Systemes de Controle Moteur | Magnetic component for hall-effect sensor, electrical assembly and electric supercharger comprising such a magnetic component |
| WO2020207788A1 (en) * | 2019-04-11 | 2020-10-15 | Robert Bosch Gmbh | Sensor for a magnetic measuring device |
| CN113646610A (en) * | 2019-04-11 | 2021-11-12 | 罗伯特·博世有限公司 | Measured value transmitter for a magnetic measuring device |
| JP2022527011A (en) * | 2019-04-11 | 2022-05-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Measurement transmitter for magnetic measuring devices |
| JP7155443B2 (en) | 2019-04-11 | 2022-10-18 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Measured value transmitter for magnetic measuring devices |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3025666B1 (en) | 2019-05-17 |
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