WO2021180383A1 - Electrically controllable unit - Google Patents

Electrically controllable unit Download PDF

Info

Publication number
WO2021180383A1
WO2021180383A1 PCT/EP2021/050923 EP2021050923W WO2021180383A1 WO 2021180383 A1 WO2021180383 A1 WO 2021180383A1 EP 2021050923 W EP2021050923 W EP 2021050923W WO 2021180383 A1 WO2021180383 A1 WO 2021180383A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
signal transmitter
unit according
sheet metal
metal part
Prior art date
Application number
PCT/EP2021/050923
Other languages
German (de)
French (fr)
Inventor
Konstantin Haberkorn
Patrick Budaker
Janos Tamas Csoti
Andreas Krueger
Klaus Lerchenmueller
Benjamin HAUFE
Lothar Detels
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2021180383A1 publication Critical patent/WO2021180383A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
    • B60T13/18—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump output delivery, e.g. by distributor valves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • 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
    • H02K11/225—Detecting coils
    • 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 invention relates to an electrically controllable unit according to the features of the preamble of claim 1.
  • Such units are preferred in electronically slip-controllable brake systems of motor vehicles for driving a
  • Pressure medium delivery device used. With the conveyed pressure medium, a brake pressure is built up in the wheel brakes of these brake systems, the level of which is proportional to the conveyed volume of pressure medium. To calculate the displaced volume of pressure medium, there are sensor devices which detect the angle of rotation of a rotor of the assembly and feed the detected angle of rotation signal to an electronic control unit for further evaluation.
  • This control unit is also suitable for adapting the brake pressure for each wheel to the slip conditions that currently prevail on the respectively assigned wheels of the vehicle. Spinning wheels of a vehicle can thus be prevented, the driving stability of a vehicle can be improved and, ultimately, braking processes can be carried out as a function of the current traffic situation, regardless of the driver's braking request.
  • This known unit comprises an electrically commutated motor with a rotor and a motor shaft connected to this rotor in a rotationally fixed manner.
  • the rotor is constructed conventionally and has a rotor package with several magnets arranged next to one another in the circumferential direction. These magnets interact in a known manner with magnets of a stator of the motor in such a way that the rotor and motor shaft are driven to rotate.
  • the stator is accommodated in a motor housing in which the motor shaft with the rotor is also rotatably mounted.
  • a sensor device For a quantitative detection of the rotational movement of the rotor, a sensor device is provided which is composed of a signal transmitter rotating with the rotor and an associated signal receiver that is fixedly anchored on the motor housing.
  • the signal transmitter comprises an annular disk-shaped circuit board which is provided with a wing-shaped coating to form electrically conductive and electrically non-conductive areas that can be detected by the signal receiver.
  • This circuit board is attached to the rotor, for example by rivets or other mechanical connecting means.
  • the signal receiver comprises an excitation coil and a detector coil which, when the signal transmitter rotates, are swept over by the electrically conductive areas of the signal transmitter alternating with the electrically non-conductive areas of the signal transmitter.
  • a variable voltage is induced in the detector coil, which characterizes the rotational movement of the signal transmitter and thus that of the rotor.
  • circuit board with its wing-shaped coating is relatively expensive to manufacture and additional work steps are also necessary for fastening the circuit board to the rotor. If rivets or screws are used as connecting means, this leads to an increase in the number of components and in the weight and thus the moment of inertia of the rotor. Finally, when mounting the circuit board on the rotor, relatively high requirements must be met with regard to the concentricity of this circuit board with respect to a longitudinal axis of the motor shaft in order not to impair the precision of the rotation angle detection.
  • an electrically controllable unit has the advantage that the signal transmitter can be produced more cost-effectively than in the explained prior art.
  • the signal transmitter can be attached to the rotor package as part of the manufacture of the rotor, thus eliminating the need for a separate assembly of the signal transmitter.
  • the manufacture of the rotor assembly and the attachment of the signal transmitter to the rotor assembly can take place on the same or on similar machines and devices. Overall, the assembly process of the unit is significantly simplified and shortened.
  • a signal transmitter which comprises at least one shaped sheet metal part which is provided with openings in its circumferential direction, which form the electrically non-conductive areas of this signal transmitter.
  • the signal transmitter has at least one outer contour which is congruent with the outer contour of the Rotor. This allows the signal transmitter and the rotor package to be easily stacked on top of one another and attached to one another. Both operations can be easily automated and thus carried out quickly and inexpensively.
  • the signal transmitter is designed in addition to the rotor package and has a hub which surrounds the machine shaft of the rotor.
  • the signal transmitter is designed as a functional component of the rotor and has continuous recesses into which the magnets of the rotor protrude.
  • the shaped sheet metal part of the signal transmitter can be provided with a central recess, the diameter of which is larger than an outer diameter of the motor shaft in the area of this central recess.
  • a central recess By means of such a central recess, notch effects on the motor shaft emanating from the shaped sheet metal part of the signal transmitter are avoided and damage to the unit caused by running time is counteracted.
  • the central recess also creates space for the arrangement of a bearing with which the rotor is rotatably received in the motor housing. Ultimately, this shortens the overall length of the unit in the direction of the longitudinal axis of the motor shaft.
  • a connection of the electrical steel sheets of a rotor via hollow cylindrical knobs protruding from a front side of the electrical steel sheets has proven itself many times in practice. By reshaping material during the production of these knobs, several electrical sheets can be stacked flush on top of one another and connected to one another by shaping.
  • the connection method known in specialist circles under the terms clinching, pressure joining, clinching or toxening is used according to the invention to fix the signal transmitter on the rotor or on the rotor assembly of the rotor. Also advantageous for a compact construction of the unit is a flush contact of the sheet metal part of the signal transmitter on the rotor.
  • window-like openings on the shaped sheet metal part of the signal transmitter With window-like openings on the shaped sheet metal part of the signal transmitter, its dimensional stability is promoted and mechanical bending, for example as a result of the individual parts getting caught in the production process, is counteracted before they are assembled. At the same time, automated assembly of the unit is made easier.
  • the drawing comprises a total of 3 figures, each showing an exemplary embodiment of the invention.
  • a rotor of an electrical machine equipped with a signal transmitter is shown in a perspective view in each of the figures.
  • the rotor 10 of an electrical machine shown in Figures 1 to 3 each comprises a rotor package 12, several magnets 14 which are arranged along an outer circumference, next to one another on the rotor package 12, a signal transmitter 16 placed on a first end face of the rotor package 12 for a sensor device Detection of an angle of rotation of the rotor 10 and a machine shaft 18 which carries the rotor package 12 with its magnets 14 and which protrudes through an associated shaft opening 30 on the signal transmitter 16.
  • the machine shaft 18 and the rotor 10 are connected to one another in a rotationally fixed manner.
  • the signal transmitter 16 is attached to the rotor package 12 and, if necessary, can enter into an additional non-positive connection with the machine shaft 18, which is preferably designed as a press connection.
  • the rotor package 12 is made up of a plurality of rotor laminations stacked on top of one another and fastened to one another. These rotor sheets are essentially flat, largely circular shaped parts made of a soft magnetic material, so-called electrical sheet.
  • the individual rotor laminations have an outer contour that is congruent with one another and are provided with continuous recesses 22 in which the magnets 14 of the rotor 10 are received.
  • connection and fastening of several rotor sheets to one another is carried out using a process known as clinching, pressure joining, clinching or toxening.
  • hollow-cylindrical knobs are formed on the respective rotor laminations by means of a punch and a die, which protrude axially over one side of the rotor laminations and form a cup-shaped recess on the other side of the rotor laminations.
  • the knobs of a rotor lamination are pressed with their axially protruding area into the associated cup-shaped recess of a knobs of another rotor lamination in such a way that the two rotor lamination can be stacked almost flush to one another in a very small space to form a package and at the same time non-positively and form-fittingly with one another get connected.
  • connection points are provided per rotor lamination, which are arranged distributed over the surface of the rotor lamination.
  • all of the rotor laminations of a rotor core 12 have a geometrically uniform sheet metal blank. Only the rotor sheet 20 facing the signal transmitter 16 on the front side can deviate from this, for example by being provided with several openings which are lined up in the circumferential direction of the sheet metal plate to form a closed ring. The openings enclose a hub region of the rotor lamination with a hub formed in its center for fastening the rotor 10 on the machine shaft 18.
  • the signal transmitter 16 according to FIG. 1 is also designed as a shaped sheet metal part.
  • That consists of a metallic material, in particular of the same material as the rotor laminations of the rotor 10 and has a plurality of recesses 32 in the area along its outer circumference, which are each spaced apart from one another by wing-shaped sections 34.
  • the recesses 32 form electrically non-conductive areas and the wing-shaped sections 34 form electrically conductive areas of the signal transmitter 16.
  • the recesses 32 are open to the periphery of the sheet metal part; Their geometric shape largely corresponds, for example, to the geometric shape of the wing-shaped sections 34.
  • the recesses 32 or the wing-shaped sections 34 of the signal generator 16 are adjoined by an annular region with openings 26 lined up in a circumferential direction.
  • the openings 26 of the signal generator 16 are aligned with the openings on the frontal electrical sheet 20 of the rotor core 12; in addition, the openings of both components are shaped and dimensioned identically.
  • the individual openings 26 of the signal transmitter 16 are separated from one another by radial webs 38, connection points 40 being provided at those points at which these radial webs 38 merge into the radially outer edge of the ring area, through which the shaped sheet metal part of the signal transmitter 16 on the frontal rotor plate of the rotor 10 is anchored.
  • the openings 26 enclose a hub region 28 of the signal transmitter 16 with a shaft opening 30 formed in the center for the passage of the machine shaft 18.
  • the signal transmitter 16 is fastened to the rotor package 12 by means of the same method, ie clinching, pressure joining, clinching or toxening, with which the rotor laminations of the rotor package 12 are also connected to one another. Accordingly, a structural unit consisting of a rotor package 12 and a signal transmitter 16 is created, which can be produced inexpensively on the same or similar devices that are also used to produce rotor packages 12 from rotor laminations. If necessary, the signal transmitter 16 can be connected to the machine shaft 18 in a rotationally fixed manner in addition to its attachment to the rotor package 12. This connection can be predetermined by structurally coordinating the shaft opening 30 in the hub region 28 of the signal transmitter 16 with the outer diameter of the machine shaft 18 and, for example, can be implemented as a press connection.
  • the recesses 32 for forming the electrically non-conductive areas of the signal transmitter 16 are designed like windows and are accordingly closed radially outward.
  • a wing-shaped, electrically conductive section 34 of the signal transmitter 16 is located between two recesses 32.
  • this design of a signal transmitter 16 has a central recess 42, the diameter of which is significantly larger than the outer diameter of the machine shaft 18 protruding through this central recess 42 a motor housing, whereby an advantageous shortening of the overall length of the rotor 10 in the direction of a longitudinal axis of the machine shaft 18 can be achieved.
  • notch effects between the signal transmitter 16 and the machine shaft 18, which may influence the service life of the unit, are avoided.
  • the connection points 40 for fastening the signal transmitter 16 to the front-side rotor lamination of the rotor core 12 are also produced in this exemplary embodiment by the above-explained clinching connection technology (pressure joining, clinching, toxening). They are arranged along an annular region 36 of the signal transmitter 16, which is located between the central recess 42 and the recesses 32.
  • the ring area 36 limits the central recess 42 of the signal generator 16 radially outwards and the window-like recesses 32 of this signal generator 16 radially inwards, ie in the direction of the center of the intended sheet metal part.
  • the shaped sheet metal part of the signal generator 16 does not form a separate component to be fastened to the rotor assembly 12, but is designed as a component of this rotor assembly 12. Accordingly, the shaped sheet metal part of the signal generator 16 replaces the frontal rotor sheet metal facing the signal generator 16 and now has openings into which the magnets 14 of the rotor 10 protrude.
  • a plurality of electrically conductive wing-shaped sections 34 alternating with electrically non-conductive cutouts 32 are again present on the signal transmitter 16 in the circumferential direction.
  • these sections are located between the hub region 28 of this signal generator 16 and the magnets 14 arranged on the rotor core 12.
  • the signal transmitter 16 according to FIG. 3 has a contour that is closed towards the outside and towards the inside and is therefore designed to be particularly dimensionally stable. Due to its closed ring shape, the signal transmitter 16 can easily be handled by machine and is therefore particularly well suited for automated production of a rotor 10.
  • the recesses 32 of the signal transmitter 16 are connected to the openings 26 of the ring area following inward in the radial direction. As a result, they take up a larger area and are consequently easier to detect by the sensor receiver under operating conditions.
  • connection points 40 between the signal transmitter 16 and the rotor package 12 are produced by the clinching method explained (pressure joining, clinching or toxening). They are arranged in a transition area of the signal transmitter 16, which is located between the hub region 28 and the electrically conductive or electrically non-conductive sections 34, 32 of the signal transmitter 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

The invention relates to an electrically controllable unit. The unit has an electrical machine comprising a rotor (10), a machine shaft (18) connected to the rotor (10) for conjoint rotation, and a signal transmitter (16) that revolves with the rotor (10) and is part of a sensor arrangement for electronically sensing and evaluating the rotational angle of the rotor (10). The signal transmitter (16) is permanently connected to the rotor (10) to form a structural unit and has first regions (34) and second regions (32) that are arranged alternately in sequence around the periphery of said signal transmitter (16) and that differ from one other in their respective electrical conductivities. According to the invention, the signal transmitter (16) comprises at least one sheet metal part provided with openings (32) around its periphery, which form electrically non-conductive regions of the signal transmitter (16). The invention provides a signal transmitter (16) that can be produced particularly economically and can be connected simply to the rotor (10) to form a structural unit.

Description

Titel title
ELEKTRISCH ANSTEUERBARES AGGREGAT ELECTRICALLY CONTROLLED UNIT
Technischer Hintergrund Technical background
Die Erfindung betrifft ein elektrisch ansteuerbares Aggregat nach den Merkmalen des Oberbegriffs des Anspruchs 1. The invention relates to an electrically controllable unit according to the features of the preamble of claim 1.
Derartige Aggregate werden bevorzugt in elektronisch schlupfregelbaren Bremsanlagen von Kraftfahrzeugen zum Antrieb einerSuch units are preferred in electronically slip-controllable brake systems of motor vehicles for driving a
Druckmittelfördereinrichtung eingesetzt. Mit dem geförderten Druckmittel wird in Radbremsen dieser Bremsanlagen ein Bremsdruck aufgebaut, dessen Höhe sich proportional zum geförderten Volumen an Druckmittel einstellt. Zur Berechnung des verdrängten Volumens an Druckmittel sind Sensoreinrichtungen vorhanden, welche den Drehwinkel eines Rotors des Aggregats erfassen und das erfasste Drehwinkelsignal einem elektronischen Steuergerät zur weiteren Auswertung zuführen. Pressure medium delivery device used. With the conveyed pressure medium, a brake pressure is built up in the wheel brakes of these brake systems, the level of which is proportional to the conveyed volume of pressure medium. To calculate the displaced volume of pressure medium, there are sensor devices which detect the angle of rotation of a rotor of the assembly and feed the detected angle of rotation signal to an electronic control unit for further evaluation.
Dieses Steuergerät ist zudem geeignet, den Bremsdruck radindividuell an die Schlupfverhältnisse anzupassen, welche aktuell an den jeweils zugeordneten Rädern des Fahrzeugs vorherrschen. Durchdrehende Räder eines Fahrzeugs lassen sich somit verhindern, die Fahrstabilität eines Fahrzeugs verbessern und letztlich können Bremsvorgänge in Abhängigkeit der momentanen Verkehrssituation unabhängig von einem vorliegenden Bremswunsch eines Fahrers durchgeführt werden. This control unit is also suitable for adapting the brake pressure for each wheel to the slip conditions that currently prevail on the respectively assigned wheels of the vehicle. Spinning wheels of a vehicle can thus be prevented, the driving stability of a vehicle can be improved and, ultimately, braking processes can be carried out as a function of the current traffic situation, regardless of the driver's braking request.
Stand der Technik Ein elektrisch ansteuerbares Aggregat nach den Merkmalen des Oberbegriffs des Anspruchs 1 ist beispielsweise in der älteren Patentanmeldung Nr. State of the art An electrically controllable unit according to the features of the preamble of claim 1 is, for example, in the earlier patent application no.
DE 102018 222 842 offenbart. DE 102018 222 842 disclosed.
Dieses bekannte Aggregat umfasst einen elektrisch kommutierten Motor mit einem Rotor sowie eine drehfest mit diesem Rotor verbundene Motorwelle. Der Rotor ist konventionell aufgebaut und weist ein Rotorpaket mit mehreren in Umfangsrichtung nebeneinanderliegend angeordneten Magneten auf. Diese Magnete wirken in bekannter Art und Weise mit Magneten eines Stators des Motors derart Zusammenwirken, dass Rotor und Motorwelle zu einer Rotationsbewegung angetrieben werden. Der Stator ist dazu in einem Motorgehäuse untergebracht, in dem auch die Motorwelle mit dem Rotor drehbar gelagert ist. This known unit comprises an electrically commutated motor with a rotor and a motor shaft connected to this rotor in a rotationally fixed manner. The rotor is constructed conventionally and has a rotor package with several magnets arranged next to one another in the circumferential direction. These magnets interact in a known manner with magnets of a stator of the motor in such a way that the rotor and motor shaft are driven to rotate. For this purpose, the stator is accommodated in a motor housing in which the motor shaft with the rotor is also rotatably mounted.
Zu einer quantitativen Erfassung der Drehbewegung des Rotors ist eine Sensoreinrichtung vorgesehen, die aus einem mit dem Rotor umlaufenden Signalgeber sowie einem zugeordneten und am Motorgehäuse ortsfest verankerten Signalempfänger aufgebaut ist. Der Signalgeber umfasst eine ringscheibenförmige Leiterplatte, die zur Ausbildung von durch den Signalempfänger detektierbaren elektrisch leitfähigen und elektrisch nicht leitfähigen Bereichen mit einer flügelförmig ausgebildeten Beschichtung versehen ist. Diese Leiterplatte ist am Rotor befestigt, beispielsweise durch Nieten oder andere mechanische Verbindungsmittel. For a quantitative detection of the rotational movement of the rotor, a sensor device is provided which is composed of a signal transmitter rotating with the rotor and an associated signal receiver that is fixedly anchored on the motor housing. The signal transmitter comprises an annular disk-shaped circuit board which is provided with a wing-shaped coating to form electrically conductive and electrically non-conductive areas that can be detected by the signal receiver. This circuit board is attached to the rotor, for example by rivets or other mechanical connecting means.
Signalempfänger und Signalgeber arbeiten nach einem induktiven Messprinzip miteinander zusammen. Hierfür umfasst der Signalempfänger einer Erregerspule und eine Detektorspule, welche bei einer Rotation des Signalgebers von den elektrisch leitfähigen Bereichen des Signalgebers im Wechsel mit den elektrisch nicht leitfähigen Bereichen des Signalgebers überstrichen werden. Dabei wird eine veränderliche Spannung in der Detektorspule induziert, welche die Rotationsbewegung des Signalgebers und damit die des Rotors charakterisiert. Vorteilhaft an einer derartigen unmittelbaren Anordnung des Signalgebers am Rotor ist die kurze Bauweise des Aggregats in Richtung einer Längsachse seiner Motorwelle. Zudem wird eine relativ präzise Erfassung des tatsächlichen Drehwinkels dieses Rotors ermöglicht, weil zwischen Signalgeber und Rotor nahezu keine trägheitsbedingte Torsion der Motorwelle aufgrund von am Rotor angreifenden Beschleunigungs- oder Verzögerungskräften auftritt. Signal receivers and signal transmitters work together according to an inductive measuring principle. For this purpose, the signal receiver comprises an excitation coil and a detector coil which, when the signal transmitter rotates, are swept over by the electrically conductive areas of the signal transmitter alternating with the electrically non-conductive areas of the signal transmitter. A variable voltage is induced in the detector coil, which characterizes the rotational movement of the signal transmitter and thus that of the rotor. The advantage of such a direct arrangement of the signal transmitter on the rotor is the short construction of the unit in the direction of a longitudinal axis of its motor shaft. In addition, a relatively precise detection of the actual angle of rotation of this rotor is made possible because between the signal transmitter and the rotor there is almost no inertia-related torsion of the motor shaft due to acceleration or deceleration forces acting on the rotor.
Dennoch ist die Leiterplatte mit ihrer flügelförmigen Beschichtung relativ teuer in der Herstellung und es sind zudem zusätzliche Arbeitsgänge zur Befestigung der Leiterplatte am Rotor notwendig. Werden als Verbindungsmittel Nieten oder Schrauben eingesetzt, so führt dies zu einer Erhöhung der Bauteileanzahl sowie des Gewichts und damit des Trägheitsmoments des Rotors. Schließlich sind bei der Montage der Leiterplatte an den Rotor relativ hohe Anforderungen hinsichtlich der Konzentrizität dieser Leiterplatte zu einer Längsachse der Motorwelle einzuhalten, um die Präzision der Drehwinkelerfassung nicht zu beeinträchtigen. Nevertheless, the circuit board with its wing-shaped coating is relatively expensive to manufacture and additional work steps are also necessary for fastening the circuit board to the rotor. If rivets or screws are used as connecting means, this leads to an increase in the number of components and in the weight and thus the moment of inertia of the rotor. Finally, when mounting the circuit board on the rotor, relatively high requirements must be met with regard to the concentricity of this circuit board with respect to a longitudinal axis of the motor shaft in order not to impair the precision of the rotation angle detection.
Vorteile der Erfindung Advantages of the invention
Ein elektrisch ansteuerbares Aggregat nach den Merkmalen des Anspruchs 1 weist demgegenüber den Vorteil auf, dass der Signalgeber kostengünstiger als beim erläuterten Stand der Technik herstellbar ist. Zudem lässt sich der Signalgeber im Rahmen der Herstellung des Rotors am Rotorpaket befestigen und somit lassen sich Arbeitsgänge zu einer separaten Montage des Signalgebers einsparen. Eine Herstellung des Rotorpakets sowie die Befestigung des Signalgebers am Rotorpaket kann auf denselben bzw. auf gleichartigen Maschinen und Einrichtungen stattfinden. Insgesamt vereinfacht und verkürzt sich der Montagevorgang des Aggregats deutlich. In contrast, an electrically controllable unit according to the features of claim 1 has the advantage that the signal transmitter can be produced more cost-effectively than in the explained prior art. In addition, the signal transmitter can be attached to the rotor package as part of the manufacture of the rotor, thus eliminating the need for a separate assembly of the signal transmitter. The manufacture of the rotor assembly and the attachment of the signal transmitter to the rotor assembly can take place on the same or on similar machines and devices. Overall, the assembly process of the unit is significantly simplified and shortened.
Die oben genannten Vorteile werden erfindungsgemäß durch einen Signalgeber erreicht, der wenigstens ein Blechformteil umfasst, das in seiner Umfangsrichtung mit Durchbrüchen versehen ist, welche die elektrisch nicht-leitfähigen Bereiche dieses Signalgebers ausbilden. The advantages mentioned above are achieved according to the invention by a signal transmitter which comprises at least one shaped sheet metal part which is provided with openings in its circumferential direction, which form the electrically non-conductive areas of this signal transmitter.
Weitere Vorteile und vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und/oder aus der nachfolgenden Beschreibung. Further advantages and advantageous developments of the invention emerge from the subclaims and / or from the following description.
In vorteilhafter Weiterbildung der Erfindung weist der Signalgeber wenigstens eine Außenkontur auf, welche deckungsgleich ist mit der Außenkontur des Rotors. Dadurch lassen sich der Signalgeber und das Rotorpaket einfach aufeinanderstapeln und aneinander befestigen. Beide Arbeitsgänge lassen sich leicht automatisieren und damit schnell und kostengünstig durchführen. In an advantageous development of the invention, the signal transmitter has at least one outer contour which is congruent with the outer contour of the Rotor. This allows the signal transmitter and the rotor package to be easily stacked on top of one another and attached to one another. Both operations can be easily automated and thus carried out quickly and inexpensively.
Grundsätzlich sind mehrere Ausführungsbeispiele einer Baueinheit aus einem Rotorpaket und einem Signalgeber vorstellbar. In principle, several exemplary embodiments of a structural unit composed of a rotor package and a signal transmitter are conceivable.
Bei einem ersten Ausführungsbeispiel ist der Signalgeber zusätzlich zum Rotorpaket ausgebildet und weist eine Nabe auf, welche die Maschinenwelle des Rotors umschließt. In a first exemplary embodiment, the signal transmitter is designed in addition to the rotor package and has a hub which surrounds the machine shaft of the rotor.
Bei einer zweiten Ausführung ist der Signalgeber als funktionaler Bestandteil des Rotors ausgebildet und weist durchgehende Ausnehmungen auf, in welche die Magnete des Rotors hineinragen. In a second embodiment, the signal transmitter is designed as a functional component of the rotor and has continuous recesses into which the magnets of the rotor protrude.
Vorteilhaft ist darüber hinaus, wenn das Blechformteil des Signalgebers mit einer Zentralausnehmung versehen werden kann, deren Durchmesser größer ist, als ein Außendurchmesser der Motorwelle im Bereich dieser Zentralausnehmung. Mittels einer derartigen Zentralausnehmung werden von dem Blechformteil des Signalgebers ausgehende Kerbwirkungen auf die Motorwelle vermieden und damit laufzeitbedingten Schäden am Aggregat entgegengewirkt. Mit der Zentralausnehmung wird zusätzlich Platz für die Anordnung eines Lagers geschaffen, mit dem der Rotor im Motorgehäuse drehbar aufgenommen ist. Letztlich wird damit eine Baulänge des Aggregats in Richtung der Längsachse der Motorwelle verkürzt. It is also advantageous if the shaped sheet metal part of the signal transmitter can be provided with a central recess, the diameter of which is larger than an outer diameter of the motor shaft in the area of this central recess. By means of such a central recess, notch effects on the motor shaft emanating from the shaped sheet metal part of the signal transmitter are avoided and damage to the unit caused by running time is counteracted. The central recess also creates space for the arrangement of a bearing with which the rotor is rotatably received in the motor housing. Ultimately, this shortens the overall length of the unit in the direction of the longitudinal axis of the motor shaft.
Eine Verbindung der Elektrobleche eines Rotors über hohlzylindrische und gegenüber einer Vorderseite der Elektrobleche vorstehende Noppen hat sich in der Praxis vielfach bewährt. Durch die Umformung von Material bei einer Herstellung dieser Noppen lassen sich mehrere Elektrobleche flächenbündig aufeinander stapeln und umformtechnisch miteinander verbinden. Die in Fachkreisen unter den Begriffen Durchsetzfügen, Druckfügen, Clinchen oder Toxen bekannt Verbindungsmethode wird erfindungsgemäß zu einer Fixierung des Signalgebers am Rotor bzw. am Rotorpaket des Rotors eingesetzt. Weiterhin vorteilhaft für eine kompakte Bauweise des Aggregats ist eine flächenbündige Anlage des Blechformteils des Signalgebers am Rotor. A connection of the electrical steel sheets of a rotor via hollow cylindrical knobs protruding from a front side of the electrical steel sheets has proven itself many times in practice. By reshaping material during the production of these knobs, several electrical sheets can be stacked flush on top of one another and connected to one another by shaping. The connection method known in specialist circles under the terms clinching, pressure joining, clinching or toxening is used according to the invention to fix the signal transmitter on the rotor or on the rotor assembly of the rotor. Also advantageous for a compact construction of the unit is a flush contact of the sheet metal part of the signal transmitter on the rotor.
Mit fensterartig ausgebildeten Durchbrüchen am Blechformteil des Signalgebers wird dessen Formstabilität begünstigt sowie einer mechanischen Verbiegung bspw. infolge eines Verhakens der Einzelteile in der Fertigung vor ihrer Montage entgegengewirkt. Gleichzeitig wird eine automatisierte Montage des Aggregats erleichtert. With window-like openings on the shaped sheet metal part of the signal transmitter, its dimensional stability is promoted and mechanical bending, for example as a result of the individual parts getting caught in the production process, is counteracted before they are assembled. At the same time, automated assembly of the unit is made easier.
Zeichnung drawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden in der nachfolgenden Beschreibung detailliert erläutert. Exemplary embodiments of the invention are shown in the drawing and are explained in detail in the following description.
Die Zeichnung umfasst insgesamt 3 Figuren, welche jeweils ein Ausführungsbeispiel der Erfindung zeigen. The drawing comprises a total of 3 figures, each showing an exemplary embodiment of the invention.
In den Figuren ist dazu jeweils ein mit einem Signalgeber ausgestatteter Rotor einer elektrischen Maschine in einer perspektivischen Ansicht dargestellt. For this purpose, a rotor of an electrical machine equipped with a signal transmitter is shown in a perspective view in each of the figures.
Für einander entsprechende Bauteile bzw. Bauteilabschnitte sind in den Figuren einheitliche Bezugszeichen verwendet worden. Uniform reference symbols have been used in the figures for corresponding components or component sections.
Beschreibung der Figuren Description of the figures
Der in den Figuren 1 bis 3 dargestellte Rotor 10 einer elektrischen Maschine umfasst jeweils ein Rotorpaket 12, mehrere Magnete 14, welche entlang eines äußeren Umfangs, nebeneinanderliegend am Rotorpaket 12 angeordnet sind, einen an einer ersten Stirnseite des Rotorpakets 12 platzierten Signalgeber 16 einer Sensoreinrichtung zur Erfassung eines Drehwinkels des Rotors 10 sowie eine Maschinenwelle 18, welche das Rotorpaket 12 mit seinen Magneten 14 trägt und welche durch eine zugeordnete Wellenöffnung 30 am Signalgeber 16 hindurchragt. Die Maschinenwelle 18 und der Rotor 10 sind drehfest miteinander verbunden. Davon abgesehen ist der Signalgeber 16 am Rotorpaket 12 befestigt und kann bei Bedarf mit der Maschinenwelle 18 eine zusätzliche kraftschlüssige Verbindung eingehen, welche vorzugsweise als Pressverbindung ausgebildet ist. The rotor 10 of an electrical machine shown in Figures 1 to 3 each comprises a rotor package 12, several magnets 14 which are arranged along an outer circumference, next to one another on the rotor package 12, a signal transmitter 16 placed on a first end face of the rotor package 12 for a sensor device Detection of an angle of rotation of the rotor 10 and a machine shaft 18 which carries the rotor package 12 with its magnets 14 and which protrudes through an associated shaft opening 30 on the signal transmitter 16. The machine shaft 18 and the rotor 10 are connected to one another in a rotationally fixed manner. Apart from that, the signal transmitter 16 is attached to the rotor package 12 and, if necessary, can enter into an additional non-positive connection with the machine shaft 18, which is preferably designed as a press connection.
Das Rotorpaket 12 ist aus einer Mehrzahl von aufeinander gestapelten und aneinander befestigten Rotorblechen aufgebaut. Bei diesen Rotorblechen handelt es sich um im Wesentlichen ebene, weitgehend kreisrund ausgebildete Formteile aus einem weichmagnetischen Werkstoff, sogenanntem Elektroblech. Die einzelnen Rotorbleche haben eine zueinander deckungsgleiche Außenkontur und sind mit durchgehenden Aussparungen 22 versehen, in welchen die Magnete 14 des Rotors 10 aufgenommen sind. The rotor package 12 is made up of a plurality of rotor laminations stacked on top of one another and fastened to one another. These rotor sheets are essentially flat, largely circular shaped parts made of a soft magnetic material, so-called electrical sheet. The individual rotor laminations have an outer contour that is congruent with one another and are provided with continuous recesses 22 in which the magnets 14 of the rotor 10 are received.
Die Verbindung und Befestigung mehrerer Rotorbleche untereinander erfolgt durch ein Verfahren, das unter den Begriffen Durchsetzfügen, Druckfügen, Clinchen oder Toxen bekannt ist. Bei diesem Verfahren werden mittels eines Stempels und einer Matrize an den jeweiligen Rotorblechen hohlzylindrisch ausgestaltete Noppen angeformt, welche über eine Seite der Rotorbleche axial vorstehen und auf der anderen Seite der Rotorbleche eine becherförmige Aussparung ausbilden. Die Noppen eines Rotorblechs werden bei diesem Verfahren mit ihrem axial vorstehenden Bereich in die zugeordnete becherförmige Aussparung eines Noppens eines anderen Rotorblechs derart eingedrückt, dass die beiden Rotorbleche nahezu flächenbündig aneinander anliegend auf engstem Raum zu einem Paket stapelbar sind und dabei gleichzeitig kraft- und formschlüssig miteinander verbunden werden. Üblicherweise sind pro Rotorblech mehrere solcher Verbindungsstellen vorgesehen, die auf der Fläche des Rotorblechs verteilt angeordnet sind. The connection and fastening of several rotor sheets to one another is carried out using a process known as clinching, pressure joining, clinching or toxening. In this method, hollow-cylindrical knobs are formed on the respective rotor laminations by means of a punch and a die, which protrude axially over one side of the rotor laminations and form a cup-shaped recess on the other side of the rotor laminations. In this method, the knobs of a rotor lamination are pressed with their axially protruding area into the associated cup-shaped recess of a knobs of another rotor lamination in such a way that the two rotor lamination can be stacked almost flush to one another in a very small space to form a package and at the same time non-positively and form-fittingly with one another get connected. Usually, several such connection points are provided per rotor lamination, which are arranged distributed over the surface of the rotor lamination.
Prinzipiell haben alle Rotorbleche eines Rotorpakets 12 einen geometrisch einheitlichen Blechzuschnitt. Lediglich das dem Signalgeber 16 zugewandte Rotorblech 20 an der Stirnseite kann davon abweichen, beispielsweise indem es mit mehreren Durchbrüchen versehen ist, die in Umfangsrichtung der Blechplatine zu einem geschlossenen Ring aneinandergereiht sind. Die Durchbrüche umschließen einen Nabenbereich des Rotorblechs mit einer in dessen Zentrum ausgebildeten Nabe zur Befestigung des Rotors 10 auf der Maschinenwelle 18. Der Signalgeber 16 nach Figur 1 ist erfindungsgemäß ebenfalls als Blechformteil ausgeführt. Jenes besteht aus einem metallischen Material, insbesondere aus demselben Material wie die Rotorbleche des Rotors 10 und weist im Bereich entlang seines Außenumfangs mehrere Aussparungen 32 auf, welche jeweils durch flügelfömige Abschnitte 34 voneinander beabstandet sind. Die Aussparungen 32 bilden elektrisch nicht-leitfähige Bereiche und die flügelförmigen Abschnitte 34 elektrisch leitfähige Bereiche des Signalgebers 16 aus. Die Aussparungen 32 sind zum Umfang des Blechformteils hin offen; ihre geometrische Form entspricht beispielhaft weitgehend der geometrischen Form der flügelförmigen Abschnitte 34. In principle, all of the rotor laminations of a rotor core 12 have a geometrically uniform sheet metal blank. Only the rotor sheet 20 facing the signal transmitter 16 on the front side can deviate from this, for example by being provided with several openings which are lined up in the circumferential direction of the sheet metal plate to form a closed ring. The openings enclose a hub region of the rotor lamination with a hub formed in its center for fastening the rotor 10 on the machine shaft 18. According to the invention, the signal transmitter 16 according to FIG. 1 is also designed as a shaped sheet metal part. That consists of a metallic material, in particular of the same material as the rotor laminations of the rotor 10 and has a plurality of recesses 32 in the area along its outer circumference, which are each spaced apart from one another by wing-shaped sections 34. The recesses 32 form electrically non-conductive areas and the wing-shaped sections 34 form electrically conductive areas of the signal transmitter 16. The recesses 32 are open to the periphery of the sheet metal part; Their geometric shape largely corresponds, for example, to the geometric shape of the wing-shaped sections 34.
Nach radial innen schließt sich an die Aussparungen 32 bzw. an die flügelförmigen Abschnitte 34 des Signalgebers 16 ein Ringbereich mit in Umfangsrichtung aneinandergereihten Durchbrüchen 26 an. Die Durchbrüche 26 des Signalgebers 16 fluchten mit den Durchbrüchen am stirnseitigen Elektroblech 20 des Rotorpakets 12, zudem sind die Durchbrüche beider Bauteile gleichartig geformt und dimensioniert. Radially inward, the recesses 32 or the wing-shaped sections 34 of the signal generator 16 are adjoined by an annular region with openings 26 lined up in a circumferential direction. The openings 26 of the signal generator 16 are aligned with the openings on the frontal electrical sheet 20 of the rotor core 12; in addition, the openings of both components are shaped and dimensioned identically.
Die einzelnen Durchbrüche 26 des Signalgebers 16 sind durch Radialstege 38 voneinander getrennt, wobei an denjenigen Stellen an denen diese Radialstege 38 in den radial äußeren Rand des Ringbereichs übergehen, Verbindungsstellen 40 vorgesehen sind, durch welche das Blechformteil des Signalgebers 16 am stirnseitigen Rotorblech des Rotors 10 verankert ist. Die Durchbrüche 26 umschließen einen Nabenbereich 28 des Signalgebers 16 mit einer im Zentrum ausgebildeten Wellenöffnung 30 zur Durchführung der Maschinenwelle 18. The individual openings 26 of the signal transmitter 16 are separated from one another by radial webs 38, connection points 40 being provided at those points at which these radial webs 38 merge into the radially outer edge of the ring area, through which the shaped sheet metal part of the signal transmitter 16 on the frontal rotor plate of the rotor 10 is anchored. The openings 26 enclose a hub region 28 of the signal transmitter 16 with a shaft opening 30 formed in the center for the passage of the machine shaft 18.
Eine Befestigung des Signalgebers 16 am Rotorpaket 12 erfolgt mittels demselben Verfahren, d.h. einem Durchsetzfügen, Druckfügen, Clinchen oder Toxen, mit dem auch die Rotorbleche des Rotorpakets 12 untereinander verbunden sind. Es wird demnach eine Baueinheit aus Rotorpaket 12 und Signalgeber 16 geschaffen, die kostengünstig auf denselben bzw. auf gleichartigen Einrichtungen herstellbar ist, welche auch zur Herstellung von Rotorpaketen 12 aus Rotorblechen verwendet werden. Bei Bedarf kann der Signalgeber 16 zusätzlich zu seiner Befestigung am Rotorpaket 12 mit der Maschinenwelle 18 drehfest verbunden werden. Diese Verbindung kann durch eine konstruktive Abstimmung der Wellenöffnung 30 im Nabenbereich 28 des Signalgebers 16 auf den Außendurchmesser der Maschinenwelle 18 vorgegeben und beispielsweise als Pressverbindung ausgeführt werden. The signal transmitter 16 is fastened to the rotor package 12 by means of the same method, ie clinching, pressure joining, clinching or toxening, with which the rotor laminations of the rotor package 12 are also connected to one another. Accordingly, a structural unit consisting of a rotor package 12 and a signal transmitter 16 is created, which can be produced inexpensively on the same or similar devices that are also used to produce rotor packages 12 from rotor laminations. If necessary, the signal transmitter 16 can be connected to the machine shaft 18 in a rotationally fixed manner in addition to its attachment to the rotor package 12. This connection can be predetermined by structurally coordinating the shaft opening 30 in the hub region 28 of the signal transmitter 16 with the outer diameter of the machine shaft 18 and, for example, can be implemented as a press connection.
Beim Ausführungsbeispiel nach Figur 2 sind die Aussparungen 32 zur Ausbildung der elektrisch nicht-leitfähigen Bereiche des Signalgebers 16 im Unterschied zum Ausführungsbeispiel nach Figur 1 fensterartig ausgeführt und dementsprechend nach radial außen geschlossen. Zwischen zwei Aussparungen 32 befindet sich auch hier ein flügelförmiger, elektrisch leitfähiger Abschnitt 34 des Signalgebers 16. In the exemplary embodiment according to FIG. 2, the recesses 32 for forming the electrically non-conductive areas of the signal transmitter 16, in contrast to the exemplary embodiment according to FIG. 1, are designed like windows and are accordingly closed radially outward. Here, too, a wing-shaped, electrically conductive section 34 of the signal transmitter 16 is located between two recesses 32.
Zudem verfügt diese Bauform eines Signalgebers 16 über eine Zentralausnehmung 42, deren Durchmesser deutlich größer ist als der Außendurchmesser der durch diese Zentralausnehmung 42 hindurchragenden Maschinenwelle 18. In der Zentralausnehmung 42 des Signalgebers 16 kann ein Lager für die Maschinenwelle 18 zur drehbaren Anordnung des Rotors 10 in einem Motorgehäuse angeordnet werden, wodurch eine vorteilhafte Verkürzung der Baulänge des Rotors 10 in Richtung einer Längsachse der Maschinenwelle 18 erzielbar ist. Zudem werden Kerbwirkungen zwischen Signalgeber 16 und Maschinenwelle 18 vermeiden, welche ggf. die Lebensdauer des Aggregats beeinflussen können. Die Verbindungsstellen 40 zur Befestigung des Signalgebers 16 am stirnseitigen Rotorblech des Rotorpakets 12 sind auch bei diesem Ausführungsbeispiel durch die oben erläuterte Durchsetz- Verbindungstechnik (Druckfügen, Clinchen, Toxen) hergestellt. Sie sind entlang eines Ringbereichs 36 des Signalgebers 16 angeordnet, welcher sich zwischen der Zentralausnehmung 42 und den Aussparungen 32 befindet. In addition, this design of a signal transmitter 16 has a central recess 42, the diameter of which is significantly larger than the outer diameter of the machine shaft 18 protruding through this central recess 42 a motor housing, whereby an advantageous shortening of the overall length of the rotor 10 in the direction of a longitudinal axis of the machine shaft 18 can be achieved. In addition, notch effects between the signal transmitter 16 and the machine shaft 18, which may influence the service life of the unit, are avoided. The connection points 40 for fastening the signal transmitter 16 to the front-side rotor lamination of the rotor core 12 are also produced in this exemplary embodiment by the above-explained clinching connection technology (pressure joining, clinching, toxening). They are arranged along an annular region 36 of the signal transmitter 16, which is located between the central recess 42 and the recesses 32.
Dementsprechend begrenzt der Ringbereich 36 einerseits die Zentralausnehmung 42 des Signalgebers 16 nach radial außen und andererseits die fensterartigen Aussparungen 32 dieses Signalgebers 16 nach radial innen, d.h. in Richtung des Zentrums des vorgesehenen Blechformteils. Beim Ausführungsbeispiel nach Figur 3 bildet das Blechformteil des Signalgebers 16 kein am Rotorpaket 12 zu befestigendes separates Bauteil, sondern ist als Bauteil dieses Rotorpakets 12 ausgeführt. Dementsprechend ersetzt das Blechformteil des Signalgebers 16 das stirnseitige, dem Signalgeber 16 zugewandte Rotorblech und weist nunmehr Durchbrüche auf, in welche die Magnete 14 des Rotors 10 hineinragen. Am Signalgeber 16 sind im Umfangsrichtung wiederum mehrere elektrisch leitfähige flügelförmige Abschnitte 34 im Wechsel mit elektrisch nicht-leitfähigen Aussparungen 32 vorhanden. Diese Abschnitte befinden sich bei diesem Ausführungsbeispiel jeweils zwischen dem Nabenbereich 28 dieses Signalgebers 16 und den am Rotorpaket 12 angeordneten Magneten 14. Dementsprechend sind die von den Aussparungen 32 gebildeten Abschnitte des Signalgebers 16 wie beim Ausführungsbeispiel nach Figur 2 nach radial außen geschlossen. Accordingly, the ring area 36 limits the central recess 42 of the signal generator 16 radially outwards and the window-like recesses 32 of this signal generator 16 radially inwards, ie in the direction of the center of the intended sheet metal part. In the exemplary embodiment according to FIG. 3, the shaped sheet metal part of the signal generator 16 does not form a separate component to be fastened to the rotor assembly 12, but is designed as a component of this rotor assembly 12. Accordingly, the shaped sheet metal part of the signal generator 16 replaces the frontal rotor sheet metal facing the signal generator 16 and now has openings into which the magnets 14 of the rotor 10 protrude. A plurality of electrically conductive wing-shaped sections 34 alternating with electrically non-conductive cutouts 32 are again present on the signal transmitter 16 in the circumferential direction. In this exemplary embodiment, these sections are located between the hub region 28 of this signal generator 16 and the magnets 14 arranged on the rotor core 12.
Der Signalgeber 16 nach Figur 3 hat eine nach außen und nach innen geschlossenen Kontur und ist damit besonders formstabil ausgebildet. Aufgrund seiner geschlossenen Ringform ist der Signalgeber 16 leicht maschinell handhabbar und daher besonders gut für eine automatisierte Fertigung eines Rotors 10 geeignet. Zudem sind die Aussparungen 32 des Signalgebers 16 mit den in Radialrichtung nach innen folgenden Durchbrüchen 26 des Ringbereichs verbunden. Sie nehmen dadurch eine größere Fläche ein und sind in der Folge unter Betriebsbedingungen leichter vom Sensorempfänger detektierbar. The signal transmitter 16 according to FIG. 3 has a contour that is closed towards the outside and towards the inside and is therefore designed to be particularly dimensionally stable. Due to its closed ring shape, the signal transmitter 16 can easily be handled by machine and is therefore particularly well suited for automated production of a rotor 10. In addition, the recesses 32 of the signal transmitter 16 are connected to the openings 26 of the ring area following inward in the radial direction. As a result, they take up a larger area and are consequently easier to detect by the sensor receiver under operating conditions.
Auch bei diesem Ausführungsbeispiel sind die Verbindungsstellen 40 zwischen Signalgeber 16 und Rotorpaket 12 durch das erläuterte Durchsetz- Fügeverfahren (Druckfügen, Clinchen oder Toxen) hergestellt. Sie sind in einem Übergangsbereich des Signalgebers 16 angeordnet, welcher sich zwischen dem Nabenbereich 28 und den elektrisch leitfähigen bzw. den elektrisch nicht leitfähigen Abschnitten 34, 32 des Signalgebers 16 befindet. In this exemplary embodiment, too, the connection points 40 between the signal transmitter 16 and the rotor package 12 are produced by the clinching method explained (pressure joining, clinching or toxening). They are arranged in a transition area of the signal transmitter 16, which is located between the hub region 28 and the electrically conductive or electrically non-conductive sections 34, 32 of the signal transmitter 16.
Selbstverständlich sind Änderungen oder Ergänzungen an den beschriebenen Ausführungsbeispielen denkbar, ohne vom eingangs dargelegten Grundgedanken der Erfindung nach den Merkmalen des Anspruchs 1 abzuweichen. It goes without saying that changes or additions to the exemplary embodiments described are conceivable without what is stated at the beginning The basic ideas of the invention differ according to the features of claim 1.

Claims

Ansprüche Ansprüche Claims claims
1. Elektrisch ansteuerbares Aggregat, insbesondere für eine elektronisch schlupfregelbare Bremsanlage eines Kraftfahrzeugs, mit einer elektrischen Maschine, insbesondere einem elektronisch kommutierten Motor, die einen, eine Rotationsbewegung ausführenden Rotor (10) und eine drehfest mit dem Rotor (10) verbundene Maschinenwelle (18) aufweist und mit einem mit dem Rotor (10) umlaufenden Signalgeber (16) einer Sensoreinrichtung zur Erfassung des Drehwinkels dieses Rotors (10), wobei dieser Signalgeber (16) mit dem Rotor (10) fest zu einer Baueinheit verbunden ist und erste Bereiche (34) sowie zweite Bereiche (32) aufweist, welche in einem gegenseitigen Wechsel in Umfangsrichtung des Signalgebers (16) aufeinanderfolgend angeordnet sind und welche sich in ihrer jeweiligen elektrischen Leitfähigkeit voneinander unterscheiden, dadurch gekennzeichnet, dass der Signalgeber (16) wenigstens ein Blechformteil umfasst, das in seiner Umfangsrichtung mit Aussparungen (32) versehen ist, welche elektrisch nicht-leitfähige Bereiche dieses Signalgebers (16) ausbilden. 1. Electrically controllable unit, in particular for an electronically slip-controlled brake system of a motor vehicle, with an electrical machine, in particular an electronically commutated motor, the rotor (10) executing a rotational movement and a machine shaft (18) connected to the rotor (10) in a rotationally fixed manner and with a signal transmitter (16) rotating with the rotor (10) of a sensor device for detecting the angle of rotation of this rotor (10), this signal transmitter (16) being firmly connected to the rotor (10) to form a structural unit and first areas (34 ) and second regions (32) which are arranged in a mutual alternation in the circumferential direction of the signal transmitter (16) and which differ from one another in their respective electrical conductivity, characterized in that the signal transmitter (16) comprises at least one shaped sheet metal part which is provided in its circumferential direction with recesses (32) which electr Form non-conductive areas of this signal transmitter (16).
2. Aggregat nach Anspruch 1, dadurch gekennzeichnet, dass der Signalgeber (16) eine Außenkontur aufweist, die zu einer Außenkontur des Rotors (10) deckungsgleich ist. 2. Unit according to claim 1, characterized in that the signal transmitter (16) has an outer contour which is congruent with an outer contour of the rotor (10).
3. Aggregat nach Anspruch 1 oder 2, wobei der Rotor (10) mehrere in Umfangsrichtung nebeneinander angeordneten Magnete (14) aufweist, dadurch gekennzeichnet, dass der Signalgeber (16) mit durchgehenden Ausnehmungen (22) versehen ist, in welche die Magnete (14) des Rotors (10) hineinragen. 3. Unit according to claim 1 or 2, wherein the rotor (10) has several magnets (14) arranged next to one another in the circumferential direction, characterized in that that the signal transmitter (16) is provided with continuous recesses (22) into which the magnets (14) of the rotor (10) protrude.
4. Aggregat nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass am Signalgeber (16) ein die Maschinenwelle (18) umschließender Nabenbereich (28) ausgebildet ist. 4. Unit according to one of claims 1 to 3, characterized in that a hub region (28) surrounding the machine shaft (18) is formed on the signal transmitter (16).
5. Aggregat nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass in einem Zentrum des Signalgebers (16) eine Zentralausnehmung (42) ausgebildet ist, deren Durchmesser größer als ein Außendurchmesser der Maschinenwelle (18) im Bereich dieser Zentralausnehmung (42) ist. 5. Unit according to one of claims 1 to 3, characterized in that a central recess (42) is formed in a center of the signal transmitter (16), the diameter of which is greater than an outer diameter of the machine shaft (18) in the region of this central recess (42) .
6. Aggregat nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass an dem Blechformteil des Signalgebers (16) wenigstens ein vorspringender Noppen angeformt ist, über welchen der Signalgeber (16) mit dem Rotor (10) zu einer Baueinheit verbunden ist. 6. Unit according to one of claims 1 to 5, characterized in that at least one protruding nub is formed on the shaped sheet metal part of the signal transmitter (16), via which the signal transmitter (16) is connected to the rotor (10) to form a structural unit.
7. Aggregat nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das wenigstens eine Blechformteil des Signalgebers (16) flächenbündig am Rotor (10) anliegt. 7. Unit according to one of claims 1 to 6, characterized in that the at least one shaped sheet metal part of the signal generator (16) rests flush on the rotor (10).
8. Aggregat nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Aussparungen (32) des Signalgebers (16) fensterartig ausgeführt und nach radial außen geschlossen sind. 8. Unit according to one of claims 1 to 7, characterized in that the recesses (32) of the signal generator (16) are window-like and are closed radially outward.
9. Aggregat nach einem der Ansprüche 1 bis 8, wobei der Rotor (10) ein aus Rotorblechen bestehendes Rotorpaket (12) aufweist, dadurch gekennzeichnet, dass das Blechformteil des Signalgebers (16) und die Rotorbleche des Rotorpakets (12) jeweils aus einem Elektroblechmaterial, insbesondere aus demselben Elektroblechmaterial, gefertigt sind. 9. Unit according to one of claims 1 to 8, wherein the rotor (10) has a rotor package (12) consisting of rotor laminations, characterized in that that the shaped sheet metal part of the signal transmitter (16) and the rotor sheets of the rotor assembly (12) are each made of an electrical sheet material, in particular from the same electrical sheet material.
PCT/EP2021/050923 2020-03-13 2021-01-18 Electrically controllable unit WO2021180383A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102020203265.3 2020-03-13
DE102020203265 2020-03-13
DE102020209478.0A DE102020209478A1 (en) 2020-03-13 2020-07-28 Electrically controllable unit
DE102020209478.0 2020-07-28

Publications (1)

Publication Number Publication Date
WO2021180383A1 true WO2021180383A1 (en) 2021-09-16

Family

ID=77457242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/050923 WO2021180383A1 (en) 2020-03-13 2021-01-18 Electrically controllable unit

Country Status (2)

Country Link
DE (1) DE102020209478A1 (en)
WO (1) WO2021180383A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100072864A1 (en) * 2008-09-22 2010-03-25 Gm Global Technology Operations, Inc. Motor Assembly with Sensor Target on Motor Rotor and Method of Forming Same
US20100164333A1 (en) * 2008-12-25 2010-07-01 Mitsuba Corporation Motor with speed reduction mechanism
DE102018222842A1 (en) 2018-12-21 2020-06-25 Robert Bosch Gmbh Motor arrangement with position sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100072864A1 (en) * 2008-09-22 2010-03-25 Gm Global Technology Operations, Inc. Motor Assembly with Sensor Target on Motor Rotor and Method of Forming Same
US20100164333A1 (en) * 2008-12-25 2010-07-01 Mitsuba Corporation Motor with speed reduction mechanism
DE102018222842A1 (en) 2018-12-21 2020-06-25 Robert Bosch Gmbh Motor arrangement with position sensor

Also Published As

Publication number Publication date
DE102020209478A1 (en) 2021-09-16

Similar Documents

Publication Publication Date Title
WO2021180384A1 (en) Electrically controllable unit
EP1688280B1 (en) Device to adjust the suspension and level of automotive vehicles
DE102017118456B4 (en) Stator mounting in the torque sensor
WO2019141690A1 (en) Rotor for an electric machine
WO2000011776A1 (en) Electric motor with a rotor rotating around a stator
WO2022063809A1 (en) Electronically commutated machine and electronically slip-controllable braking system having an electronically commutated machine
EP1697054B1 (en) External rotor drive
WO2021104717A1 (en) Electrically actuatable drive assembly
DE10121870B4 (en) Inductive planar built-up angle sensor
WO2004001932A1 (en) Method and system for assembling an electricity generating unit
WO1998040954A1 (en) Engine pump unit
WO2021180383A1 (en) Electrically controllable unit
DE19958503C2 (en) Electrical machine
DE102012219903A1 (en) Wheel hub for motor car, has wheel mounting holes formed outside wheel centering devices in radial direction, where wheel centering devices lie between wheel mounting holes in circumferential direction
DE102021204589A1 (en) Rotor support for an electrical machine and electrical machine with this
DE2461353C2 (en) Wheel speed sensor for determining the angular speed of a wheel
EP3894726A2 (en) Rotor with integrally formed thread, electric motor, actuator, and parking lock
DE102020211373A1 (en) Electronically commutated machine, electronic slip controllable brake system with an electronically commutated machine and method for producing an electronically commutated machine
DE102016107855B4 (en) Side channel blower, in particular for a vehicle heater
WO2022128509A2 (en) Installation assembly and method for producing an installation assembly
WO2018158208A1 (en) Method for producing an electrical machine
DE102019203482A1 (en) Spur gear and its manufacturing process as well as brushless electric motor
DE19501574C2 (en) Drive combination
DE102021212340A1 (en) Electronically commutated machine, pressure generator unit with an electronically commutated machine and method for assembling an electronically commutated machine
EP0886364B1 (en) Rotor for an electrical machine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21701430

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21701430

Country of ref document: EP

Kind code of ref document: A1