WO2002030722A2 - Electrically actuated automotive disc brake - Google Patents

Electrically actuated automotive disc brake Download PDF

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Publication number
WO2002030722A2
WO2002030722A2 PCT/EP2001/011709 EP0111709W WO0230722A2 WO 2002030722 A2 WO2002030722 A2 WO 2002030722A2 EP 0111709 W EP0111709 W EP 0111709W WO 0230722 A2 WO0230722 A2 WO 0230722A2
Authority
WO
WIPO (PCT)
Prior art keywords
disc brake
electrically actuated
stator winding
motor vehicle
vehicle disc
Prior art date
Application number
PCT/EP2001/011709
Other languages
German (de)
French (fr)
Other versions
WO2002030722A3 (en
Inventor
Andreas GRÜNDL
Bernhard Hoffmann
Original Assignee
Compact Dynamics 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 Compact Dynamics Gmbh filed Critical Compact Dynamics Gmbh
Priority to AU2002224775A priority Critical patent/AU2002224775A1/en
Publication of WO2002030722A2 publication Critical patent/WO2002030722A2/en
Publication of WO2002030722A3 publication Critical patent/WO2002030722A3/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H02K21/227—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos having an annular armature coil
    • 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
    • B60T13/74—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 electrical assistance or drive
    • B60T13/741—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 electrical assistance or drive acting on an ultimate actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut

Definitions

  • the invention relates to an electrically actuated motor vehicle disc brake.
  • the invention relates to a disc brake which enables the construction of a so-called dry brake system, i.e. without hydraulic or brake fluid, which is pressed into a cylinder / piston arrangement by a master brake cylinder when the driver actuates the brake pedal via a brake fluid line system.
  • an electric drive serves to bring the brake linings into frictional engagement with the brake disc.
  • Disc brake assemblies of this type are known in the prior art in a wide variety of configurations.
  • piezoelectric linear drives to perform an infeed movement on the brake linings arranged on both sides of a brake disc by means of a corresponding gear.
  • Another proposal provides for the use of linearly acting electromagnets to generate corresponding feed movements of the brake pads.
  • these proposals have so far been unsuccessful due to their considerable problems in converting them into a safe and mass-produced product.
  • the invention is therefore based on the problem of providing an electrically actuatable motor vehicle disk brake which, in particular, efficiently uses the small installation space for wheel brakes available in modern passenger motor vehicles, achieves the high level of reliability of conventional hydraulic brakes and the necessary contact pressure for provides the brake pads on the brake disc with the required speed.
  • an electrically actuable motor vehicle disc brake is provided according to the invention, with a brake caliper and an actuating unit arranged on the brake caliper.
  • the actuation unit is coupled to two friction linings, each of which cooperates with one side surface of a brake disk and is arranged to be displaceable to a limited extent in the brake caliper, wherein one of the friction linings can be brought into frictional engagement with the brake disk by the actuation unit and the other friction lining by the action of a reaction force applied by the brake caliper ,
  • the actuating unit has an electric motor and a gear unit, which is arranged between the electric motor and a friction lining, in order to convert the rotational movement of the electric motor into a translational movement for the friction linings.
  • the electric motor has a stator with at least one ring-shaped stator winding, on the two end faces of which a ring of pole pieces is arranged, the radially inner ends of the pole pieces of a ring being connected to one another and the radially outer end of the pole pieces of both rings protruding laterally. Furthermore, the electric motor has a rotor which at least partially encompasses the stator and which is connected to the input side of the Gear unit is coupled and carries magnets which are arranged opposite the pole shoes of the stator.
  • This arrangement forms a transverse flux motor with which a particularly high power density can be achieved.
  • a planetary gear required in known arrangements for example EP 394 238 B1 or DE 42 29 042 AI
  • EP 394 238 B1 or DE 42 29 042 AI can be saved in this way, which reduces both the construction space and the manufacturing outlay and costs.
  • this concept allows the electric motor to be designed both as an external rotor and as an internal rotor. Because of the possible larger surfaces of the magnets and the larger lever arm (due to the larger diameter of the rotor), preference should be given to the external rotor variant. Nevertheless, the invention covers both embodiments.
  • the efficiency is considerably improved.
  • the annular stator winding allows a very high filling factor of the winding (ratio of the winding wire volume to the total volume of the winding chamber), since on the one hand the winding shape is very simple and on the other hand rectangular wire or a copper strip can also be used in cross section.
  • this stator winding which is very easy to produce, requires only a very thin insulation of the wire used for it, since the individual turns only have a very small voltage difference of the order of one to a few volts. These circumstances also increase the efficiency compared to known arrangements.
  • this motor vehicle disc brake is extremely compact in construction and very easy to manufacture. With such an electrically actuated motor vehicle disc brake, the required contact pressure can be reliably achieved with the dynamics necessary for a correspondingly comfortable regulation of the braking behavior.
  • a gear unit which is preferably designed as a spindle / nut arrangement or as a spindle / ball bearing bush arrangement.
  • the rotor of the electric motor is rotatably connected to the nut or the ball bushing as the input side of the gear unit and the spindle has a translational effect on a brake pad.
  • stator windings arranged coaxially next to one another are provided, the pole shoes arranged on the end faces of a stator winding being offset in the circumferential direction with respect to the pole shoes of an adjacent stator winding.
  • the number of phases corresponding to stator windings and pole shoe rings encompassing them must be provided.
  • the pole shoes of one stator winding can be offset in the circumferential direction with respect to the pole shoes of the adjacent stator winding (s).
  • magnets assigned to a stator winding in relation to the magnets of the adjacent stator winding (s) in the circumferential direction.
  • one or more pole shoes For a particularly simple manufacture and assembly, it is expedient to manufacture one or more pole shoes to be arranged between two stator windings, axially adjacent (with their free ends oriented in opposite directions) and then to assemble them into a ring on which the two stator windings be pushed or plugged in on the side.
  • the / each stator winding In order to be able to introduce the magnetic field generated by the / each stator winding into the pole shoes or their ends facing the magnet, the / each stator winding is arranged on a ring 5 made of sheet iron. This ring made of sheet iron comes into (magnetic) contact when the pole shoes are assembled in the axial direction with their radially inner ends.
  • each of the magnets arranged on the rotor is dimensioned and positioned so that it is aligned with a pole piece of the stator in a predetermined rest position.
  • the magnets are preferably rare earth magnets (for example samarium / cobalt or the like).
  • the magnets are arranged with their radially outer side on a ring made of sheet iron, which serves as the magnetic yoke of the rotor.
  • the pole pieces can either be made of iron powder, the grains of which are electrical or magnetic
  • the variant pressed or sintered from iron powder is easier to manufacture as a mass product, but may have slightly less favorable magnetic properties than the laminated variant.
  • pole pieces form a jointly installable segment of the ring in order to be pushed together with the stator winding.
  • the pole shoes and the stator winding are designed so that they can be connected to one another by coaxial connection.
  • the electric motor is a drive that can be used independently of the application of the electrically actuable motor vehicle disc brake described above.
  • Fig. 1 shows a schematic representation of an electrically actuated motor vehicle disc brake in longitudinal section.
  • FIG. 2a shows a schematic plan view of a segment of a stator with two stator windings in a first embodiment of the invention.
  • FIG. 2b shows a schematic plan view of a segment of a stator with two stator windings in a second embodiment of the invention.
  • FIG. 1 shows an electrically actuable motor vehicle disc brake which has a brake caliper 10 which is essentially U-shaped in cross section and an electromechanical actuating unit 12 arranged on the brake caliper 10.
  • a brake caliper 10 Arranged in the brake caliper 10 on its two legs 10 ′, 10 ′′ are two friction linings 14, 14 ′ (which are accommodated in guides that are not illustrated in any more detail).
  • the two friction linings 14, 14 ′ are arranged on both sides of a brake disk 16 overlapped by the brake caliper 10 and cooperate with a respective side surface 16 ', 16 "of the brake disc 16, which is rotatably fixed with one only partially shown
  • Axle stub 18 is connected.
  • this is a floating caliper arrangement in which one of the friction linings 14 can be brought into frictional engagement with the brake disk 16 by the actuating unit 12 directly and the other friction lining 14 'by the action of a reaction force applied by the brake caliper 10.
  • the actuating unit 12 is attached to the side of the brake caliper 10 and has an electric motor 20 and a gear in the form of a nut / spindle arrangement 22 arranged between the electric motor 20 and a friction lining 14.
  • This gear 22 serves to convert the rotary movement of the electric motor 20 into a longitudinal movement for the friction linings 14, 14 '.
  • the electric motor 20 has a stator 24 with two annular stator windings 26, 26 '. On the two end faces of each stator winding 26, 26 'is a ring of pole shoes 28a, 28b; 28a '28b' (see also FIG. 2a) which partially overlap the outer jacket surface of the respective stator winding 26, 26 'with their free ends 30a, 30b, 30a', 30b 1 .
  • the radially inner ends of the pole shoes 32a, 32b; 32a ', 32b' of a ring are connected to one another by a magnetically conductive, integrally formed ring (not designated further).
  • pole shoes 30a, 30b, 30a ', 30b' of two rings arranged on a stator winding 26, 26 ' alternately engage with one another along the circumference of the respective stator winding 26, 26' and each protrude laterally.
  • the two adjoining rings of pole shoes 28b, 28a ', which are arranged between the two stator windings 26, 26' are configured as uniform components which have an essentially T-shaped configuration (see FIG. 1 below).
  • Each stator winding 26, 26 ' is arranged on a ring 34, 34' made of sheet iron, which serves as a magnetic yoke.
  • the pole pieces are made of sintered iron powder, the grains of which are electrically and magnetically insulated from one another by a plastic coating.
  • the electric motor 20 also has a rotor 40 in the form of an annular cylinder 40a, on the side facing away from the brake caliper 10, an end wall 40b is formed.
  • the rotor 40 with its ring cylinder 40a engages around the stator windings 26, 26 'in the radial and in the axial direction.
  • the end wall 40b of the rotor 40- is coupled to the input side of the gear unit 22 in such a way that the end wall 40b is connected to the nut 22a of the nut / spindle assembly 22 in a rotationally fixed (welded or form-fitting) manner.
  • the nut 22a of the nut / spindle arrangement 22 is rotatably mounted in a flange 48 formed on the leg 10 'of the brake caliper 10, but is not displaceable in the axial direction.
  • the nut 22a is coupled to the spindle 22c via balls 22b, the spindle 22c moving in the longitudinal direction when the nut 22a rotates and thereby pushing the brake pad 14 toward the brake disk 16 or away from it via a pressure plate 52.
  • the invention can be implemented with 1-, 2- or 3-phase motors, with two annular stator windings arranged coaxially next to one another being provided for multiphase motors - as shown in FIG. 2b for a 2-phase motor.
  • the pole shoes arranged on the end faces of a stator winding are arranged offset in the circumferential direction with respect to the pole shoes of an adjacent stator winding, and the magnets of a stator winding are arranged along the circumference of the rotor at the same position (ie not offset from one another).
  • the magnets can also be displaced and the pole pieces of adjacent stator windings have the same position along the circumference of the stator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to an electrically actuated automotive disc brake, comprising a caliper (10) and an actuator (12) disposed on said caliper, and two friction linings (14, 14') interacting with a disc brake (16). The actuator is provided with an electric motor (20) and with a transmission unit (22) for converting the rotational movement of the electric motor into a translational movement for the friction linings. The electric motor has a stator (24) with at least one annular stator winding (26, 26'), at the two front faces of which one ring of pole shoes (28a, 28b, 28a', 28b') each is disposed. The radially inner ends of the pole shoes of one ring are interlinked and the radially outer ends of the pole shoes of both rings project laterally on both sides. The electric motor is further provided with a rotor (40) that at least partially encloses the stator, said rotor being coupled to the input side of the transmission unit and carrying magnets (44, 44') that are disposed opposite the pole shoes.

Description

Elektrisch betätigbare Kraftfahrzeug-ScheibenbremseElectrically actuated motor vehicle disc brake
Beschreibungdescription
Hintergrund der ErfindungBackground of the Invention
Die Erfindung betrifft eine elektrisch betätigbare Kraftfahrzeug-Scheibenbremse. Insbesondere handelt es sich bei der Erfindung um eine Scheibenbremse, die den Aufbau eines sog. trockenen Bremssystems ermöglicht, also ohne Hydraulik- oder Bremsflüssigkeit, die durch einen Hauptbremszylinder bei einer Bremspedalbetätigung durch den Fahrer über ein Bremsflüssigkeitsleitungssystem in eine Zylinder/Kolbenanordnung gepreßt wird. Vielmehr dient bei der Erfindung ein elektrischer Antrieb dazu, die Bremsbeläge mit der Bremsscheibe in Reibungseingriff zu bringen.The invention relates to an electrically actuated motor vehicle disc brake. In particular, the invention relates to a disc brake which enables the construction of a so-called dry brake system, i.e. without hydraulic or brake fluid, which is pressed into a cylinder / piston arrangement by a master brake cylinder when the driver actuates the brake pedal via a brake fluid line system. Rather, in the invention, an electric drive serves to bring the brake linings into frictional engagement with the brake disc.
Stand der TechnikState of the art
Derartige Scheibenbremsenanordnungen sind im Stand der Technik in den unterschiedlichsten Ausgestaltungen bekannt. So gibt es zum Beispiel den Vorschlag, mittels piezoelektrischer Linearantriebe über ein entspechendes Getriebe eine Zustellbewegung auf die beiderseits einer Bremsscheibe angeordneter Bremsbeläge auszuüben. Ein anderer Vorschlag sieht die Verwendung von linear wirkenden Elektromagneten zum Erzeugen entsprechender Zustellbewegungen der Bremsbeläge vor. Diesen Vorschlägen ist jedoch aufgrund ihrer erheblicher Probleme bei der Umsetzung in ein sicheres und massenfertigbares Produkt bisher der Erfolg versagt geblieben.Disc brake assemblies of this type are known in the prior art in a wide variety of configurations. For example, there is a proposal to use piezoelectric linear drives to perform an infeed movement on the brake linings arranged on both sides of a brake disc by means of a corresponding gear. Another proposal provides for the use of linearly acting electromagnets to generate corresponding feed movements of the brake pads. However, these proposals have so far been unsuccessful due to their considerable problems in converting them into a safe and mass-produced product.
Weitere nachstehend genannte Dokumente zum Stand der Technik zeigen - ohne Anspruch auf Vollständigkeit - die Verwendung von Elektromotoren als Antriebselemente, welche über geeignete Drehmoment-umsetzende Getriebe auf die Bremsbeläge wirken. Allerdings sind auch die aus den Dokumenten DE 195 43 098 C2 , DE 195 11 287 AI, WO 89/03490, WO 97/11287, WO 97/ 17533, US 4,865,162, DE 34 10 006 AI, DE 42 29 042 AI, EP 0394 238 Bl bekannten Anordnungen nicht geeignet, die erforderlichen Kräfte bei entsprechendem geringem Bauraum mit der geforderten Dynamik und Ausfallsicherheit zu den für ein Massenprodukt erforderlichen niedrigen Kosten darzustellen.Further documents of the prior art mentioned below show - without claiming to be complete - the use of electric motors as drive elements which act on the brake pads via suitable torque-converting gears. However, those from documents DE 195 43 098 C2, DE 195 11 287 AI, WO 89/03490, WO 97/11287, WO 97/17533, US 4,865,162, DE 34 10 006 AI, DE 42 29 042 AI, EP 0394 238 Bl known arrangements not suitable, the required To represent forces with a correspondingly small installation space with the required dynamics and reliability at the low costs required for a mass product.
Der Erfindung zugrundeliegendes ProblemProblem underlying the invention
Der Erfindung liegt daher das Problem zugrunde, eine elektrisch betätigbare Kraftfahrzeug-Scheibenbremse bereitzustellen, die insbesondere den geringen, in modernen Personen- Kraftfahrzeugen zur Verfügung stehenden Einbauraum für Rad- bremsen effizient nutzt, die hohe Ausf llsicherheit von herkömmlichen Hydraulikbremsen erreicht und den notwendigen Anpreßdruck für die Bremsbeläge an der Bremsschreibe mit der erforderlichen Schnelligkeit bereitstellt.The invention is therefore based on the problem of providing an electrically actuatable motor vehicle disk brake which, in particular, efficiently uses the small installation space for wheel brakes available in modern passenger motor vehicles, achieves the high level of reliability of conventional hydraulic brakes and the necessary contact pressure for provides the brake pads on the brake disc with the required speed.
Erfindungsgemäße LösungSolution according to the invention
Zur Lösung dieses Problems wird erfindungsgemäß eine elektrisch betätigbare Kraftfahrzeug-Scheibenbremse bereitgestellt, mit einem Bremssattel sowie einer am Bremssattel angeordneten Betätigungseinheit. Die Betätigungseinheit ist mit zwei mit je einer Seitenfläche einer Bremsscheibe zusammenwirkenden und im Bremssattel begrenzt verschiebbar angeordneten Reibbelägen gekoppelt, wobei einer der Reibbeläge durch die Betätigungseinheit direkt und der andere Reibbelag durch die Wirkung einer vom Bremssattel aufgebrachten Reaktions- kraft mit der Bremsscheibe in Reibungseingriff bringbar ist. Die Betätigungseinheit hat einen Elektromotor sowie eine wirkungsmäßig zwischen dem Elektromotor und einem Reibbelag angeordnete Getriebeeinheit zur Umsetzung der Rotationsbewegung des Elektromotors in eine Translationsbewegung für die Reib- beläge. Der Elektromotor hat einen Stator mit wenigstens einer ringförmigen Statorwicklung, an deren beiden Stirnseiten jeweils ein Kranz aus Polschuhen angeordnet ist, wobei die radial innenliegenden Enden der Polschuhe eines Kranzes miteinander verbunden sind und die radial außenliegenden Endes der Polschuhe beider Kränze sich jeweils seitlich überragen. Weiterhin hat der Elektromotor einen den Stator zumindest teilweise umgreifenden Rotor, der mit der Eingangsseite der Getriebeeinheit gekoppelt ist und Magnete trägt, die den Polschuhen des Stators gegenüberliegend angeordnet sind.To solve this problem, an electrically actuable motor vehicle disc brake is provided according to the invention, with a brake caliper and an actuating unit arranged on the brake caliper. The actuation unit is coupled to two friction linings, each of which cooperates with one side surface of a brake disk and is arranged to be displaceable to a limited extent in the brake caliper, wherein one of the friction linings can be brought into frictional engagement with the brake disk by the actuation unit and the other friction lining by the action of a reaction force applied by the brake caliper , The actuating unit has an electric motor and a gear unit, which is arranged between the electric motor and a friction lining, in order to convert the rotational movement of the electric motor into a translational movement for the friction linings. The electric motor has a stator with at least one ring-shaped stator winding, on the two end faces of which a ring of pole pieces is arranged, the radially inner ends of the pole pieces of a ring being connected to one another and the radially outer end of the pole pieces of both rings protruding laterally. Furthermore, the electric motor has a rotor which at least partially encompasses the stator and which is connected to the input side of the Gear unit is coupled and carries magnets which are arranged opposite the pole shoes of the stator.
Vorteile und Ausgestaltungen der erfindungs emäßen Lösung Durch diese Anordnung wird ein Transversalflußmotor gebildet, mit dem eine besonders hohe Leistungsdichte realisierbar ist. Insbesondere kann auf diese Weise ein bei bekannten Anordnungen (zum Beispiel EP 394 238 Bl oder DE 42 29 042 AI) erforderliches Planetengetriebe eingespart werden, was sowohl Bau- räum als auch Herstellungsaufwand und -kosten reduziert.Advantages and refinements of the solution according to the Invention This arrangement forms a transverse flux motor with which a particularly high power density can be achieved. In particular, a planetary gear required in known arrangements (for example EP 394 238 B1 or DE 42 29 042 AI) can be saved in this way, which reduces both the construction space and the manufacturing outlay and costs.
Weiterhin erlaubt dieses Konzept die Ausgestaltung des Elektromotors sowohl als Außenläufer als auch als Innenläufer. Dabei ist wegen der möglichen größeren Flächen der Magnete und des größeren Hebelarms (aufgrund des größeren Durchmessers des Rotors) der Außenläufervariante der Vorzug zu geben. Dennoch erfaßt die Erfindung beide Ausführungsformen.Furthermore, this concept allows the electric motor to be designed both as an external rotor and as an internal rotor. Because of the possible larger surfaces of the magnets and the larger lever arm (due to the larger diameter of the rotor), preference should be given to the external rotor variant. Nevertheless, the invention covers both embodiments.
Da die ringförmige Statorwicklung keine Wicklungsköpfe auf- weist (wie zum Beispiel der Motor aus der WO 97/17553), ist der Wirkungsgrad erheblich verbessert. Außerdem erlaubt die ringförmige Statorwicklung einen sehr hohen Füllfaktor der Wicklung (Verhältnis des Wicklungsdrahtvolumens zum Gesamtvolumen der Wicklungskammer) , da einerseits die Wicklungsform sehr einfach ist und andererseits auch im Querschnitt rechteckiger Draht oder ein Kupferband verwendet werden kann. Weiterhin erfordert diese sehr einfach herzustellende Statorwicklung auch nur eine sehr dünne Isolation des dafür verwendeten Drahtes, da die einzelnen Windungen gegeneinander le- diglich eine sehr geringe Spannungsdifferenz in der Größenordnung von einem bis wenige Volt haben. Auch diese Umstände erhöhen den Wirkungsgrad gegenüber bekannten Anordnungen.Since the ring-shaped stator winding has no winding heads (such as the motor from WO 97/17553), the efficiency is considerably improved. In addition, the annular stator winding allows a very high filling factor of the winding (ratio of the winding wire volume to the total volume of the winding chamber), since on the one hand the winding shape is very simple and on the other hand rectangular wire or a copper strip can also be used in cross section. Furthermore, this stator winding, which is very easy to produce, requires only a very thin insulation of the wire used for it, since the individual turns only have a very small voltage difference of the order of one to a few volts. These circumstances also increase the efficiency compared to known arrangements.
Schließlich ist diese Kraftfahrzeug-Scheibenbremse im Aufbau äußerst kompakt und sehr einfach herzustellen. Mit einer derartigen elektrisch betätigbaren Kraftfahrzeug- Scheibenbremse kann der erforderliche Anpreßdruck mit der für eine entsprechend komfortable Regelung des Bremsverhaltens notwendigen Dynamik sicher realisiert werden.Finally, this motor vehicle disc brake is extremely compact in construction and very easy to manufacture. With such an electrically actuated motor vehicle disc brake, the required contact pressure can be reliably achieved with the dynamics necessary for a correspondingly comfortable regulation of the braking behavior.
Damit die von dem Rotor erzeugte Drehbewegung in eine Translationsbewegung für die Reibbeläge umgesetzt wird, ist eine Getriebeeinheit vorgesehen, die vorzugsweise als Spindel- /Mutteranordnung oder als Spindel-/Kugelumlaufbüchsenanord- nung ausgestaltet ist. Der Rotor des Elektromotors ist dabei mit der Mutter bzw. der Kugelumlaufbüchse als Eingangsseite der Getriebeeinheit drehfest verbunden und die Spindel wirkt translatorisch auf einen Bremsbelag.So that the rotary movement generated by the rotor is converted into a translational movement for the friction linings, a gear unit is provided, which is preferably designed as a spindle / nut arrangement or as a spindle / ball bearing bush arrangement. The rotor of the electric motor is rotatably connected to the nut or the ball bushing as the input side of the gear unit and the spindle has a translational effect on a brake pad.
Um den Elektromotor mehrphasig zu gestalten sind wenigstens zwei koaxial nebeneinander angeordnete ringförmige Statorwicklungen vorgesehen, wobei die an den Stirnseiten einer Statorwicklung angeordneten Polschuhe gegenüber den Polschu- hen einer benachbarten Statorwicklung in Umfangsrichtung ver- setzt sind. Bei dieser Ausgestaltung sind der Phasenzahl entsprechend Statorwicklungen und diese umgreifende Polschuh- Ringe vorzusehen. Um die unterschiedlichen Phasen zu realisieren, kann dabei die Positionierung der Polschuhe einer Statorwicklung gegenüber den Polschuhen der benachbarten Sta- torwicklung(en) in Umfangsrichtung versetzt werden. Alternativ dazu ist es auch möglich, die einer Statorwicklung zugeordneten Magnete gegenüber den Magneten der benachbarten Statorwicklung(en) in Umfangsrichtung zu versetzen.In order to make the electric motor multi-phase, at least two annular stator windings arranged coaxially next to one another are provided, the pole shoes arranged on the end faces of a stator winding being offset in the circumferential direction with respect to the pole shoes of an adjacent stator winding. In this embodiment, the number of phases corresponding to stator windings and pole shoe rings encompassing them must be provided. In order to implement the different phases, the pole shoes of one stator winding can be offset in the circumferential direction with respect to the pole shoes of the adjacent stator winding (s). Alternatively, it is also possible to offset the magnets assigned to a stator winding in relation to the magnets of the adjacent stator winding (s) in the circumferential direction.
Für eine besonders einfache Fertigung und Montage ist es zweckmäßig, einen oder mehrere zwischen zwei Statorwicklungen anzuordnende, in axialer Richtung benachbarte (mit ihren freien Enden entgegengesetzt orientierte) Polschuhe als ein Teil zu fertigen und dann zu einem Kranz zu montieren, an den die beiden Statorwicklungen seitlich darangeschoben oder -gesteckt werden. Damit ist es möglich, die Montage des mehrphasigen Motors besonders effizient zu gestalten. Um das durch die/jede Statorwicklung erzeugte Magnetfeld in die Polschuhe bzw. deren den Magneten zugewandte Enden einleiten zu können, ist die/ ede Statorwicklung auf einem Ring 5 aus Eisenblech angeordnet. Dieser Ring aus Eisenblech kommt bei der Montage der Polschuhe in axialer Richtung mit deren radial innen__liegenden Enden in (magnetischen) Kontakt.For a particularly simple manufacture and assembly, it is expedient to manufacture one or more pole shoes to be arranged between two stator windings, axially adjacent (with their free ends oriented in opposite directions) and then to assemble them into a ring on which the two stator windings be pushed or plugged in on the side. This makes it possible to make the assembly of the multi-phase motor particularly efficient. In order to be able to introduce the magnetic field generated by the / each stator winding into the pole shoes or their ends facing the magnet, the / each stator winding is arranged on a ring 5 made of sheet iron. This ring made of sheet iron comes into (magnetic) contact when the pole shoes are assembled in the axial direction with their radially inner ends.
Weiterhin ist jeder der an dem Rotor angeordneten Magnete so 0 dimensioniert und positioniertt, daß er - in einer vorbestimmten Ruhelage - mit einem Polschuh des Stators fluchtet. Bei den Magneten handelt es sich vorzugsweise um Seltenerden- Magnete (zum Beispiel Samarium/Cobalt oder dergl . ) .Furthermore, each of the magnets arranged on the rotor is dimensioned and positioned so that it is aligned with a pole piece of the stator in a predetermined rest position. The magnets are preferably rare earth magnets (for example samarium / cobalt or the like).
5 Dabei sind die Magnete mit ihrer radial außen liegenden Seite an einem Ring aus Eisenblech angeordnet, das als magnetischer Rückschluß des Rotors dient.5 The magnets are arranged with their radially outer side on a ring made of sheet iron, which serves as the magnetic yoke of the rotor.
Mit den Polschuhen eines Stators fluchtende Magnete, die in »0 Umfangsrichtung benachbart zueinander an dem Rotor angeordnet sind, haben eine abwechselnde magnetische Orientierung.Magnets aligned with the pole pieces of a stator, which are arranged on the rotor in the circumferential direction adjacent to one another, have an alternating magnetic orientation.
Die Polschuhe können entweder aus Eisenpulver hergestellt sein, dessen Körner gegeneinander elektrisch oder magnetischThe pole pieces can either be made of iron powder, the grains of which are electrical or magnetic
.5 isoliert sind, oder die Polschuhe sind aus gestapeltem, gegeneinander isoliertem Eisenblech hergestellt. Die aus Eisenpulver gepreßte oder gesinterte Variante ist als Massenprodukt leichter herstellbar, hat aber gegenüber der geblechten Variante ggf. geringfügig ungünstigere magnetische Eigen- 0 schaften..5 are insulated, or the pole pieces are made of stacked, mutually insulated sheet iron. The variant pressed or sintered from iron powder is easier to manufacture as a mass product, but may have slightly less favorable magnetic properties than the laminated variant.
Um die Montage zu vereinfachen bilden zwei oder mehr Polschuhe ein gemeinsam verbaubares Segment des Kranzes, um mit der Statorwicklung zusammengeschoben zu werden. Dazu sind die Polschuhe und die Statorwicklung so gestaltet, daß sie durch koaxiales Aneinanderstecken miteinander verbindbar sind.To simplify assembly, two or more pole pieces form a jointly installable segment of the ring in order to be pushed together with the stator winding. For this purpose, the pole shoes and the stator winding are designed so that they can be connected to one another by coaxial connection.
Im übrigen ist der Elektromotor ein von der vorstehend beschriebenen Anwendung der elektrisch betätigbaren Kraftfahrzeug-Scheibenbremse unabhängig nutzbarer Antrieb.Otherwise, the electric motor is a drive that can be used independently of the application of the electrically actuable motor vehicle disc brake described above.
Weitere Einzelheiten und Abwandlungen der Erfindung sind un- ter Bezugnahme auf die Zeichnung nachstehend erläutert.Further details and modifications of the invention are explained below with reference to the drawing.
Kurzbeschreibung der ZeichungBrief description of the drawing
Fig. 1 zeigt eine schematische Darstellung einer elektrisch betätigbaren Kraftfahrzeug-Scheibenbremse im Längsschnitt.Fig. 1 shows a schematic representation of an electrically actuated motor vehicle disc brake in longitudinal section.
Fig. 2a zeigt eine schematische Draufsicht auf ein Segment eines Stators mit zwei Statorwicklungen in einer ersten Ausführungsform der Erfindung.2a shows a schematic plan view of a segment of a stator with two stator windings in a first embodiment of the invention.
Fig. 2b zeigt eine schematische Draufsicht auf ein Segment eines Stators mit zwei Statorwicklungen in einer zweiten Ausführungsform der Erfindung.2b shows a schematic plan view of a segment of a stator with two stator windings in a second embodiment of the invention.
Detaillierte Beschreibung einer bevorzugten Ausfϋhrungsform Fig. 1 zeigt eine elektrisch betätigbare Kraftfahrzeug- Scheibenbremse, die einen im Querschnitt im wesentlichen U-förmigen Bremssattel 10 sowie eine am Bremssattel 10 angeordnete elektromechanische Betätigungseinheit 12 aufweist. In dem Bremssattel 10 sind an dessen beiden Schenkeln 10', 10" zwei (in nicht weiter veranschaulichten Führungen aufgenommene) Reibbeläge 14, 14' angeordnet. Die beiden Reibbeläge 14, 14' sind zu beiden Seiten einer durch den Bremssattel 10 übergriffenen Bremsscheibe 16 angeordnet und wirken mit jeweils einer Seitenfläche 16', 16" der Bremsscheibe 16 zusam- men, die drehfest mit einem lediglich teilweise gezeigtenDETAILED DESCRIPTION OF A PREFERRED EMBODIMENT FIG. 1 shows an electrically actuable motor vehicle disc brake which has a brake caliper 10 which is essentially U-shaped in cross section and an electromechanical actuating unit 12 arranged on the brake caliper 10. Arranged in the brake caliper 10 on its two legs 10 ′, 10 ″ are two friction linings 14, 14 ′ (which are accommodated in guides that are not illustrated in any more detail). The two friction linings 14, 14 ′ are arranged on both sides of a brake disk 16 overlapped by the brake caliper 10 and cooperate with a respective side surface 16 ', 16 "of the brake disc 16, which is rotatably fixed with one only partially shown
Achsstummel 18 verbunden ist. Die Reibbeläge 14, 14' sind im Bremssattel 10 auf die Bremsscheibe 16 hin bzw. von ihr weg verschiebbar angeordnet. Dabei handelt es sich in der gezeigten Ausführungsform um eine Schwimmsattelanordnung, bei der einer der Reibbeläge 14 durch die Betätigungseinheit 12 direkt und der andere Reibbelag 14 ' durch die Wirkung einer vom Bremssattel 10 aufgebrachten Reaktionskraft mit der Bremsscheibe 16 in Reibungseingriff bringbar ist.Axle stub 18 is connected. The friction linings 14, 14 'are in the brake caliper 10 towards the brake disc 16 or away from it slidably arranged. In the embodiment shown, this is a floating caliper arrangement in which one of the friction linings 14 can be brought into frictional engagement with the brake disk 16 by the actuating unit 12 directly and the other friction lining 14 'by the action of a reaction force applied by the brake caliper 10.
Die Betätigungseinheit 12 ist seitlich an dem Bremssattel 10 angesetzt und weist einen Elektromotor 20 sowie ein zwischen dem Elektromotor 20 und einem Reibbelag 14 angeordnetes Getriebe in Form einer Mutter/Spindelanordung 22 auf. Dieses Getriebe 22 dient dazu, die Drehbewegung des Elektromotors 20 in eine Längsbewegung für die Reibbeläge 14, 14' umzusetzen.The actuating unit 12 is attached to the side of the brake caliper 10 and has an electric motor 20 and a gear in the form of a nut / spindle arrangement 22 arranged between the electric motor 20 and a friction lining 14. This gear 22 serves to convert the rotary movement of the electric motor 20 into a longitudinal movement for the friction linings 14, 14 '.
Der Elektromotor 20 hat einen Stator 24 mit zwei ringförmigen Statorwicklungen 26, 26'. An den beiden Stirnseiten jeder Statorwicklung 26, 26' ist jeweils ein Kranz aus in Umfangsrichtung voneinander beabstandeten Polschuhen 28a, 28b; 28a' 28b' angeordnet (siehe auch Fig. 2a) , die die äußere Mantel- fläche der jeweiligen Statorwicklung 26, 26' mit ihren freien Enden 30a, 30b, 30a', 30b1 teilweise übergreifen. Die radial innenliegenden Enden der Polschuhe 32a, 32b; 32a', 32b' eines Kranzes sind miteinander durch einen magnetisch leitenden einstückig angeformten Ring (nicht weiter bezeichnet) verbun- den.The electric motor 20 has a stator 24 with two annular stator windings 26, 26 '. On the two end faces of each stator winding 26, 26 'is a ring of pole shoes 28a, 28b; 28a '28b' (see also FIG. 2a) which partially overlap the outer jacket surface of the respective stator winding 26, 26 'with their free ends 30a, 30b, 30a', 30b 1 . The radially inner ends of the pole shoes 32a, 32b; 32a ', 32b' of a ring are connected to one another by a magnetically conductive, integrally formed ring (not designated further).
Die radial außenliegenden (freien) Enden der Polschuhe 30a, 30b, 30a', 30b' zweier an einer Statorwicklung 26, 26' angeordneter Kränze greifen entlang des Umfangs der jeweiligen Statorwicklung 26, 26' abwechselnd ineinander und überragen sich jeweils seitlich. Zur vereinfachten Herstellung sind die beiden aneinander angrenzenden, zwischen den beiden Statorwicklungen 26, 26' angeordneten Kränze aus Polschuhen 28b, 28a' als einheitliche Bauteile ausgestaltet, die eine im we- sentlichen T-förmige Gestalt (siehe Fig. 1 unten) haben. Jede Statorwicklung 26, 26' ist auf einem Ring 34, 34' aus Eisenblech angeordnet, der als magnetischer Rückschluß dient. In der gezeigten Ausführungsform sind die Polschuhe aus gesintertem Eisenpulver hergestellt, dessen Körner durch einen Kunststoff-Überzug gegeneinander elektrisch und magnetisch isoliert sind.The radially outer (free) ends of the pole shoes 30a, 30b, 30a ', 30b' of two rings arranged on a stator winding 26, 26 'alternately engage with one another along the circumference of the respective stator winding 26, 26' and each protrude laterally. To simplify manufacture, the two adjoining rings of pole shoes 28b, 28a ', which are arranged between the two stator windings 26, 26', are configured as uniform components which have an essentially T-shaped configuration (see FIG. 1 below). Each stator winding 26, 26 'is arranged on a ring 34, 34' made of sheet iron, which serves as a magnetic yoke. In the embodiment shown, the pole pieces are made of sintered iron powder, the grains of which are electrically and magnetically insulated from one another by a plastic coating.
Der Elektromotor 20 hat außerdem einen Rotor 40 in Form eines Ringzylinders 40a, an dessen dem Bremssattel 10 abgewandten Seite eine Stirnwand 40b angeformt ist. Der Rotor 40 mit sei- nem Ringzylinder 40a umgreift die Statorwicklungen 26, 26' in radialer und in axialer Richtung. Die Stirnwand 40b des Rotors 40- ist mit der Eingangsseite der Getriebeeinheit 22 in der Weise gekoppelt, daß die Stirnwand 40b drehfest (verschweißt oder formschlüssig) mit der Mutter 22a der Mutter/ Spindelanordung 22 drehfest verbunden ist. An der Innenwand des Ringzylinders 40a des Rotors 40 sind den freien Enden der Polschuhe 28a, 28b; 28a' 28b' gegenüberliegend unter Bildung eines Luftspaltes 42 Seltenerden-Magnete 44, 44' mit ihrer radial außen liegenden Seite jeweils an einem Ring 46, 46' aus Eisenblech angeordnet. Dabei sind die Magnete 44, 44' so dimensioniert und angeordnet, daß sie mit einem Polschuh 28a, 28b; 28a' 28b" fluchten.The electric motor 20 also has a rotor 40 in the form of an annular cylinder 40a, on the side facing away from the brake caliper 10, an end wall 40b is formed. The rotor 40 with its ring cylinder 40a engages around the stator windings 26, 26 'in the radial and in the axial direction. The end wall 40b of the rotor 40- is coupled to the input side of the gear unit 22 in such a way that the end wall 40b is connected to the nut 22a of the nut / spindle assembly 22 in a rotationally fixed (welded or form-fitting) manner. On the inner wall of the ring cylinder 40a of the rotor 40, the free ends of the pole shoes 28a, 28b; 28a '28b' opposite to form an air gap 42 rare earth magnets 44, 44 'with their radially outer side each arranged on a ring 46, 46' made of sheet iron. The magnets 44, 44 'are dimensioned and arranged so that they with a pole piece 28a, 28b; 28a '28b "are aligned.
Die mit den eine Statorwicklung umgebenden Polschuhen fluch- tende Magnete, die in Umfangsrichtung benachbart zueinander an dem Rotor angeordnet sind, haben eine abwechselnde magnetische Orientierung.The magnets aligned with the pole pieces surrounding a stator winding, which are arranged adjacent to one another in the circumferential direction on the rotor, have an alternating magnetic orientation.
Die Mutter 22a der Mutter/Spindelanordung 22 ist in einem an dem Schenkel 10' des Bremssattels 10 angeformten Flansch 48 drehbar aber in axialer Richtung unverschiebbar gelagert. Über Kugeln 22b ist die Mutter 22a mit der Spindel 22c gekoppelt, wobei die Spindel 22c sich bei einer Drehung der Mutter 22a in Längsrichtung bewegt und dabei über eine Druckplatte 52 den Bremsbelag 14 in Richtung auf die Bremsscheibe 16 bzw. von ihr wegschiebt. Die Erfindung ist mit 1-, 2-, oder 3-Phasenmotoren realisierbar, wobei für Mehrphasenmotoren - wie in Fig. 2b für einen 2-Phasenmotor gezeigt - zwei koaxial nebeneinander angeordnete ringförmige Statorwicklungen vorgesehen sind. Hierbei sind die an den Stirnseiten einer Statorwicklung angeordneten Polschuhe gegenüber den Polschuhen einer benachbarten Statorwicklung in Umfangsrichtung versetzt angeordnet und die Magnete einer Statorwicklung sind entlang des Umfangs des Rotors an der selben Position (also nicht zueinander versetzt) ange- ordnet. Anstatt die Polschuhe in Umfangsrichtung zu versetzen, können auch die Magnete versetzt werden und die Polschuhe benachbarter Statorwicklungen haben die gleiche Position entlang des Umfangs des Stators. The nut 22a of the nut / spindle arrangement 22 is rotatably mounted in a flange 48 formed on the leg 10 'of the brake caliper 10, but is not displaceable in the axial direction. The nut 22a is coupled to the spindle 22c via balls 22b, the spindle 22c moving in the longitudinal direction when the nut 22a rotates and thereby pushing the brake pad 14 toward the brake disk 16 or away from it via a pressure plate 52. The invention can be implemented with 1-, 2- or 3-phase motors, with two annular stator windings arranged coaxially next to one another being provided for multiphase motors - as shown in FIG. 2b for a 2-phase motor. In this case, the pole shoes arranged on the end faces of a stator winding are arranged offset in the circumferential direction with respect to the pole shoes of an adjacent stator winding, and the magnets of a stator winding are arranged along the circumference of the rotor at the same position (ie not offset from one another). Instead of displacing the pole pieces in the circumferential direction, the magnets can also be displaced and the pole pieces of adjacent stator windings have the same position along the circumference of the stator.

Claims

Ansprüche Expectations
1. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse, mit1. Electrically actuated motor vehicle disc brake, with
- einem Bremssattel (10) sowie - einer am Bremssattel (10) angeordneten Betatigungseinheit (12) , und mit- A brake caliper (10) and - An actuating unit (12) arranged on the brake caliper (10), and with
- zwei mit je einer Seitenfläche (16', 16") einer Bremsscheibe (16) zusammenwirkenden und im Bremssattel (10) begrenzt verschiebbar angeordneten Reibbelägen (14, 14'), wobei einer der Reibbeläge (14) durch die Betätigungseinheit (12) direkt und der andere Reibbelag (14') durch die Wirkung einer vom Bremssattel (10) aufgebrachten Reaktionskraft mit der Bremsscheibe (16) in Reibungseingriff bringbar ist, wobei- Two, each with a side surface (16 ', 16 ") of a brake disc (16) cooperating and arranged in the brake caliper (10) to be limitedly displaceable friction linings (14, 14'), one of the friction linings (14) by the actuating unit (12) directly and the other friction lining (14 ') can be brought into frictional engagement with the brake disc (16) by the action of a reaction force exerted by the brake caliper (10), wherein
- die Betätigungseinheit (12) einen Elektromotor (20) sowie eine wirkungsmäßig zwischen dem Elektromotor (20) und einem- The actuating unit (12) an electric motor (20) and an effective between the electric motor (20) and one
Reibbelag (14) angeordnete Getriebeeinheit (22) zur Umsetzung der Rotationsbewegung des Elektromotors (20) in eine Translationsbewegung für die Reibbeläge (14, 14') aufweist, wobeiThe friction lining (14) has a gear unit (22) for converting the rotational movement of the electric motor (20) into a translational movement for the friction linings (14, 14 '), wherein
- der Elektromotor (20) -- einen Stator (24) mit wenigstens einer ringförmigen Statorwicklung (26, 26') aufweist, an deren beiden Stirnseiten jeweils ein Kranz aus Polschuhen (28a, 28b; 28a', 28b') angeordnet ist, wobei die radial innenliegenden Enden der Polschuhe (28a, 28b; 28a', 28b1) eines Kranzes miteinander ver- bunden sind und die radial außenliegenden Endes der Polschuhe beider Kränze sich jeweils seitlich überragen, und- The electric motor (20) has a stator (24) with at least one ring-shaped stator winding (26, 26 '), on each of the two end faces of which a ring of pole pieces (28a, 28b; 28a', 28b ') is arranged the radially inner ends of the pole pieces (28a, 28b; 28a ', 28b 1 ) of a ring are connected to one another and the radially outer ends of the pole pieces of both rings each project laterally, and
- einen den Stator (24) zumindest teilweise umgreifenden Rotor (40) aufweist, der mit der Eingangsseite der Getriebeeinheit (22) gekoppelt ist und Magnete (44, 44') trägt, die den Polschuhen gegenüberliegend angeordnet sind.- A stator (24) at least partially encompassing rotor (40) which is coupled to the input side of the gear unit (22) and carries magnets (44, 44 ') which are arranged opposite the pole pieces.
2. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei2. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- die Getriebeeinheit (22) als Spindel-/Mu ter nordnung oder als Spindel-/Kugelumlaufbüchsenanordnung ausgestaltet ist, bei der der Rotor des Elektromotors (40) mit der Mutter (22a) bzw. der Kugelumlaufbüchse als Eingangsseite der Getriebeein- heit (22) drehtest verbunden ist, und die Spindel (22c) auf einen Bremsbelag (14) wirkt.- The gear unit (22) is designed as a spindle / nut arrangement or as a spindle / ball bushing arrangement, in which the rotor of the electric motor (40) with the nut (22a) or the ball bearing bushing as the input side of the gear unit. unit (22) is connected to the rotary test, and the spindle (22c) acts on a brake pad (14).
3. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei3. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- wenigstens zwei koaxial nebeneinander angeordnete ringförmige Statorwicklungen (26, 26') vorgesehen sind, wobei die an den Stirnseiten einer Statorwicklung angeordneten Polschuhe gegenüber den Polschuhen einer benachbarten Statorwicklung in Umfangsrichtung versetzt angeordnet sind und die einer Statorwicklung zugeordneten Magnete gegenüber den einer benachbarten Statorwicklung zugeordneten Magneten in Umfangsrichtung an der selben Position angeordnet sind.- At least two annular stator windings (26, 26 ') arranged coaxially next to one another are provided, the pole shoes arranged on the end faces of a stator winding being offset in the circumferential direction with respect to the pole shoes of an adjacent stator winding and the magnets associated with a stator winding with respect to the magnets associated with an adjacent stator winding are circumferentially arranged at the same position.
4. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei4. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- wenigstens zwei koaxial nebeneinander angeordnete ringförmige Statorwicklungen (26, 26') vorgesehen sind, wobei die an den Stirnseiten einer Statorwicklung angeordneten Polschuhe gegenüber den Polschuhen einer benachbarten Statorwicklung in Umfangsrichtung an der selben Position angeordnet sind und die einer Statorwicklung zugeordneten Magnete gegenüber den einer benachbarten Statorwicklung zugeordneten Magneten in Umfangsrichtung versetzt sind.- At least two coaxial juxtaposed annular stator windings (26, 26 ') are provided, the pole shoes arranged on the end faces of a stator winding being arranged circumferentially at the same position with respect to the pole shoes of an adjacent stator winding and the magnets associated with a stator winding being opposite those of an adjacent one Stator winding associated magnets are offset in the circumferential direction.
5. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei5. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- jede Statorwicklung (26, 26') auf einem Ring (34, 34') aus Eisenblech angeordnet ist.- Each stator winding (26, 26 ') is arranged on a ring (34, 34') made of sheet iron.
6. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei6. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- jeder der Magnete (44, 44') so dimensioniert und angeordnet ist, daß er mit einem Polschuh fluchtet. - Each of the magnets (44, 44 ') is dimensioned and arranged so that it is aligned with a pole piece.
7. Elektrisch betätigbare Kraftf hrzeug-Scheibenbremse nach Anspruch 1, wobei7. Electrically actuated vehicle disc brake according to claim 1, wherein
- jeder der Magnete mit (44, 44') seiner radial außen liegen- p den Seite an einem Ring (46, 46') aus Eisenblech angeordnet ist .- Each of the magnets is arranged with (44, 44 ') its radially outer side p on a ring (46, 46') made of sheet iron.
8. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1, wobei8. Electrically actuated motor vehicle disc brake according to claim 1, wherein
) - mit den Polschuhen eines Stators fluchtende Magnete, die in Umfangsrichtung benachbart zueinander an dem Rotor angeordnet sind, abwechselnd magnetisch orientiert sind.) - magnets aligned with the pole pieces of a stator, which are arranged circumferentially adjacent to one another on the rotor, are alternately magnetically oriented.
9. Elektrisch betätigbare Kraftf hrzeug-Scheibenbremse nach 5 Anspruch 1 , wobei9. Electrically actuated vehicle disc brake according to claim 5, wherein
- die Polschuhe aus Eisenpulver hergestellt sind, dessen Körner gegeneinander elektrisch oder magnetisch isoliert sind.- The pole pieces are made of iron powder, the grains of which are electrically or magnetically insulated from one another.
10. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei10. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- die Polschuhe aus gestapeltem, gegeneinander isoliertem Eisenblech hergestellt sind.- The pole pieces are made of stacked, mutually insulated sheet iron.
11. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei11. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- die zwei oder mehr Polschuhe ein gemeinsam verbaubares Segment des Kranzes bilden.- The two or more pole pieces form a jointly installable segment of the ring.
12. Elektrisch betätigbare Kraftfahrzeug-Scheibenbremse nach Anspruch 1 , wobei12. Electrically actuated motor vehicle disc brake according to claim 1, wherein
- die Polschuhe und die Statorwicklung so gestaltet sind, daß sie durch koaxiales Aneinanderstecken miteinander verbindbar sind. - The pole pieces and the stator winding are designed so that they can be connected to one another by coaxial connection.
PCT/EP2001/011709 2000-10-11 2001-10-10 Electrically actuated automotive disc brake WO2002030722A2 (en)

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AU2002224775A AU2002224775A1 (en) 2000-10-11 2001-10-10 Electrically actuated automotive disc brake

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DE2000150352 DE10050352C1 (en) 2000-10-11 2000-10-11 Electrically actuated motor vehicle disk brake has one lining brought into frictional engagement directly by actuating unit, one by action of reaction force applied by brake caliper
DE10050352.7 2000-10-11

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WO2002030722A2 true WO2002030722A2 (en) 2002-04-18
WO2002030722A3 WO2002030722A3 (en) 2002-07-18

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PCT/EP2001/011709 WO2002030722A2 (en) 2000-10-11 2001-10-10 Electrically actuated automotive disc brake

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AU (1) AU2002224775A1 (en)
DE (1) DE10050352C1 (en)
WO (1) WO2002030722A2 (en)

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EP1502035B1 (en) 2002-04-26 2008-07-02 Continental Teves AG & Co. oHG Actuating unit for a disk brake which can be electromechanically actuated
DE10227828B4 (en) * 2002-06-21 2007-06-06 Compact Dynamics Gmbh Electrically actuated motor vehicle disc brake
US7687961B2 (en) 2005-03-01 2010-03-30 Honda Motor Co., Ltd. Stator, motor, and method of manufacturing such stator
DE102009004474B4 (en) * 2009-01-13 2014-09-25 Tirron-Elektronik Gmbh Transverse flux machine with disc-shaped rotors
ES2572653T3 (en) * 2009-09-21 2016-06-01 Höganäs Ab Stator device and electric machine

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DE3410006A1 (en) 1984-03-19 1985-09-19 Alfred Teves Gmbh, 6000 Frankfurt METHOD FOR CONTROLLING A BRAKE SYSTEM FOR MOTOR VEHICLES, AND DEVICE FOR IMPLEMENTING THE METHOD
WO1989003490A1 (en) 1987-10-07 1989-04-20 Allied-Signal Inc. Electrically actuated disc brake
US4865162A (en) 1986-12-15 1989-09-12 Opus Acquisition Corporation Electrically actuated aircraft brakes
DE4229042A1 (en) 1991-09-02 1993-03-04 Akebono Brake Ind Electric-motor-assisted hydraulic brake for motor vehicle - has sensitivity to brake pedal operation enhanced by gearing-down and unequal dias. of colinear pistons
DE19511287A1 (en) 1994-07-21 1996-01-25 Teves Gmbh Alfred Electromechanically actuated disc brake
DE19543098C2 (en) 1995-05-19 1997-03-20 Continental Ag Brake actuator for electrically operated vehicle brakes
WO1997011287A1 (en) 1995-09-21 1997-03-27 Lucas Industries Public Limited Company Improvements in electrically-operated disc brake assemblies for vehicles
WO1997017533A1 (en) 1995-08-10 1997-05-15 Fairbrother, Paul, Garnet Flushing apparatus
WO1997017553A1 (en) 1995-11-04 1997-05-15 Lucas Industries Public Limited Company Improvements in electrically-operated disc brake assemblies for vehicles

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DE59904085D1 (en) * 1998-11-27 2003-02-27 Bombardier Transp Gmbh Single or multi-phase transverse flux machine
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Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410006A1 (en) 1984-03-19 1985-09-19 Alfred Teves Gmbh, 6000 Frankfurt METHOD FOR CONTROLLING A BRAKE SYSTEM FOR MOTOR VEHICLES, AND DEVICE FOR IMPLEMENTING THE METHOD
US4865162A (en) 1986-12-15 1989-09-12 Opus Acquisition Corporation Electrically actuated aircraft brakes
WO1989003490A1 (en) 1987-10-07 1989-04-20 Allied-Signal Inc. Electrically actuated disc brake
EP0394238B1 (en) 1987-10-07 1992-06-17 AlliedSignal Inc. Electrically actuated disc brake
DE4229042A1 (en) 1991-09-02 1993-03-04 Akebono Brake Ind Electric-motor-assisted hydraulic brake for motor vehicle - has sensitivity to brake pedal operation enhanced by gearing-down and unequal dias. of colinear pistons
DE19511287A1 (en) 1994-07-21 1996-01-25 Teves Gmbh Alfred Electromechanically actuated disc brake
DE19543098C2 (en) 1995-05-19 1997-03-20 Continental Ag Brake actuator for electrically operated vehicle brakes
WO1997017533A1 (en) 1995-08-10 1997-05-15 Fairbrother, Paul, Garnet Flushing apparatus
WO1997011287A1 (en) 1995-09-21 1997-03-27 Lucas Industries Public Limited Company Improvements in electrically-operated disc brake assemblies for vehicles
WO1997017553A1 (en) 1995-11-04 1997-05-15 Lucas Industries Public Limited Company Improvements in electrically-operated disc brake assemblies for vehicles

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AU2002224775A1 (en) 2002-04-22
DE10050352C1 (en) 2002-01-03
WO2002030722A3 (en) 2002-07-18

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