EP1960795A1 - Wheel bearing with sensor - Google Patents

Wheel bearing with sensor

Info

Publication number
EP1960795A1
EP1960795A1 EP06828606A EP06828606A EP1960795A1 EP 1960795 A1 EP1960795 A1 EP 1960795A1 EP 06828606 A EP06828606 A EP 06828606A EP 06828606 A EP06828606 A EP 06828606A EP 1960795 A1 EP1960795 A1 EP 1960795A1
Authority
EP
European Patent Office
Prior art keywords
sensor
wheel bearing
ring
wheel
metal part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06828606A
Other languages
German (de)
French (fr)
Inventor
Jens Heim
Darius Dlugai
Peter Niebling
Christian Mock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler KG
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 Schaeffler KG filed Critical Schaeffler KG
Publication of EP1960795A1 publication Critical patent/EP1960795A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Definitions

  • the invention relates to a wheel bearing with a sensor for measuring rotational or angular movements of a wheel of a motor vehicle, with a Radlagerflansch and an attached rolling bearing, on the circumferential inner ring serving as a transmitter encoder ring is arranged.
  • Sensors used in wheel bearings are particularly needed for measuring the rotational speeds and rotational behavior of the wheels of a motor vehicle, the vehicle containing a control system that processes this information as inputs to the control system.
  • control systems are used for example for anti-lock control, traction control, driving stability control and the like.
  • the measurement of direct measured variables is advantageous.
  • Count among the measured variables Brake and drive accelerations, the wheel speed, the angular acceleration and lateral, acting on the vehicle chassis accelerations.
  • the wheel bearing is because of the power transmission from the road to the vehicle chassis an optimal measuring point for detecting forces and accelerations.
  • Wheel bearings with sensors are already known in various configurations.
  • the sensor is arranged and fastened in different ways on the wheel bearing.
  • a sensor body is inserted into a receiving opening of a fastening tab, which is directly connected to the stationary part of the axle body, namely the wheel bearing outer ring, and locked with a clamp.
  • DE 103 38 959 A1 discloses an arrangement of a sensor on a wheel bearing unit, wherein the sensor is fastened to an outer wheel bearing ring of the wheel bearing unit and is opposite to an encoder rotatable relative to the sensor about an axis of rotation of the wheel bearing unit.
  • the wheel bearing unit has at least one row of rolling elements and a second row of rolling elements adjacent to the first row in the axial direction of the rotational axis, wherein the wheel bearing ring surrounds at least one of the rows.
  • the sensor is integrated into a housing and attached to the outer bearing ring by means of a lever. The lever extends axially from the sensor and extends partially radially over the outer race.
  • a partially pressed-in, screwed-in or optionally fixed bolt holds the sensor on the outer bearing ring via the lever.
  • the encoder is concealed from the sensor by means of a cover plate. hereby although the encoder is protected against contamination and rust infiltration, but not the contact surface of the sensor.
  • a disadvantage of these known devices is the relatively complicated mounting of the sensor on the wheel bearing, in particular by the provision of additional components such as brackets, springs, levers, etc.
  • the uniform and constant distance between the sensor and the encoder, encoder ring or impulse wheel, that is the sensor surface and the encoder surface to be detected is an important feature for the function of the measuring device on the wheel bearing and the associated control system.
  • Moisture caused rust infiltration on the mounting surface of the sensor can cause the sensor depending on its mounting position axially or radially pushed away from the encoder so that the distance between the sensor surface and the encoder surface increases. This often leads to signal failures of the sensor, so that a reliable speed or rotation angle measurement is impaired at the wheel bearing.
  • the invention has for its object to provide a wheel bearing with a sensor that allows safe operation even under the influence of dirt and rust and is easy to assemble and disassemble.
  • the invention is thus based on a wheel bearing with a sensor for measuring rotational or angular movements of a wheel of a motor vehicle, with a Radlagerflansch and an attached rolling bearing, on the circumferential inner ring serving as a transmitter Encoder ring is arranged.
  • the senor is mounted parallel to its radial reading direction on a radial contact surface of the wheel bearing flange pointing to the encoder ring plane, and on the stationary outer ring of the rolling bearing a sheet metal part covering at least the reading range of the sensor and the encoder ring is, which serves as a circumferential contact surface for the sensor.
  • the senor is mounted parallel to its radial reading direction on a pointing to the encoder ring radial bearing surface of the Radlagerflansches.
  • the fastening element prevents a radial movement of the sensor relative to the encoder on the basis of just this orientation of the fastener.
  • the sensor is fixed in its installed position on Radlagerflansch in the radial direction. A rust infiltration of the sensor in the area the contact surface on Radlagerflansch is thus prevented. This in turn leads to a safe operation of the wheel bearing in conjunction with the associated control system, since corrosion-induced signal failures are prevented.
  • the sensor is easy to assemble or disassemble.
  • fastening may take place by means of a fastening element directed at a predeterminable angle, in particular by means of a right-angled fastening element.
  • an angle deviating from the perpendicularity of the fastening element can also be selected here, as a result of which an anti-twist protection can be additionally realized.
  • the safe operation of the sensor according to the invention is further supported by the fact that on the fixed outer ring of the bearing a at least the reading range of the sensor and the encoder ring overlapping sheet metal part is placed, which serves as circumferentially-related contact surface for the sensor. Due to the right angle to the contact surface directed fastener for the sensor this is prevented from twisting in the case of rust undercuts against the mounting axis of the fastener from its normal mounting position, since the sensor surface rests on the encoder ring overlapping sheet metal part.
  • the encoder ring has evenly distributed on the circumference arranged alternately signal-receiving, signal-reflecting or signal-generating areas. This provides the encoder ring with a sensible surface.
  • the sensor on the radial bearing surface of the Radlagerflansches - at right angles or at a different angle from the angle - screwed prevents twisting of the sensor about the axis of the screw.
  • the sensor is preferably attached from the back of the Radlagerflansches forth with a screw on the contact surface.
  • a screw connection of the sensor with the Radlagerflansch forms a safe and easy to implement connection, through which also an easy assembly and disassembly of the sensor is made possible at the wheel bearing.
  • another type of mounting of the sensor can be realized, for example by means of a bolt.
  • the senor on the circumferential side of the sensor surface at least two spaced-apart webs, which rest against the radial outer peripheral surface of the attached to the outer ring of the rolling bearing sheet metal part.
  • the webs prevent twisting or tilting of the sensor about its attachment axis in relation to the encoder surface, in particular in the event of rust infiltration of the sensor installation surface.
  • the senor in the reading region may have a contour which corresponds to the peripheral contour of the sheet metal part placed on the outer ring of the rolling bearing. Also by this measure, a twisting or tilting of the sensor is avoided around its mounting axis, since the contours of the sensor reading surface and the sheet metal part are congruent.
  • the sheet metal part In order to prevent rusting of the sheet metal part placed on the outer ring of the roller bearing, the sheet metal part consists of a stainless material.
  • FIG. 1 is a front perspective view of a wheel bearing according to the
  • FIG. 2 is a rear perspective view of the wheel bearing of FIG.
  • the wheel bearing 1 of a motor vehicle, not shown, shown in Figures 1 and 2 has a Radlagerflansch 2, which has a substantially triangular shape with rounded corners.
  • One of the sides of Radlagerflansches 2 is provided with a survey 3.
  • the wheel bearing 1 comprises a roller bearing 4, which may have one, two or four row WälzSystem instruments, but also all other possible wheel bearing sets with rollers or balls as rolling elements 5.
  • the rolling bearing 4 has a fixed outer ring 6 and an axially elongated and rotatable inner ring 7, between which the rolling elements 5 are mounted in a roller bearing cage 8.
  • an encoder ring 9 On the rotating inner ring 7 of the rolling bearing 5, an encoder ring 9 is attached, which has a U-shape in cross section, the bottom 10 of the U-shape extends radially to the wheel bearing axis 11, the shorter leg 12 of the U-shape coaxial between the Inner ring 7 and the outer ring 6 projects, and the longer leg 13 of the U-shape coaxially and outwardly of the outer ring 6 protrudes.
  • the rotating with the inner ring 7 encoder ring 9 has a plurality of evenly distributed around the circumference arranged alternately signal-receiving, signal-reflecting or signal-generating areas 14, which are detectable by a sensor 15.
  • the encoder ring 9 can be mutually polarized from a magnetized material, such as polyamide plastic, or from magnetized or ferromagnetic metal or a combination of these materials.
  • a sheet metal part 16 consisting of a non-limiting material is plugged, which serves as a circumferential contact surface for the sensor 15.
  • the sheet metal part 16 has in cross section a leg 17 which extends radially outward from the wheel bearing axis 11 and then at a right angle coaxial to the wheel bearing axis 11 around the peripheral surface of the outer ring 6 towards the wheel bearing flange 2.
  • the sheet metal part 16 is reversed to form a gap 18 by 180 ° coaxial with the wheel bearing axis 11, and the remaining leg 19 extends coaxially with the wheel bearing axis 11 away from the Radlagerflansch 2, wherein the axial end edge of the leg 19 approximately to the bottom plane of the encoder ring. 9 is flush.
  • the leg 13 of the encoder ring 9 projects axially into the gap 18 formed by the sheet metal part 16.
  • the sensor 15 is used to measure rotational or angular movements of a wheel of the motor vehicle and consists essentially of a sensor head 20 and a sensor housing 21, from which a sensor cable 22 leads to a control system, not shown, of the motor vehicle.
  • the sensor 15 is attached to a flat contact surface 23 of the survey 3 of the Radlagerflansches 2, which is shown in dark color in Fig. 1 and extends radially to the wheel bearing axis 11 and lies in the plane of the front of the Radlagerflansches 2.
  • the sensor head 20, whose reading direction is illustrated by the arrow 24 in Fig. 1, is thus aligned so that its sensor surface on theticianpartyf laugh of the leg 19 of the sheet metal part 16 is applied.
  • the sensor surface is congruent with the areas 14 of the encoder ring 9 that are distributed uniformly around the circumference and can detect them.
  • the signals or measured data are transmitted via the sensor cable 22 to the control system of the motor vehicle.
  • the sensor surface of the sensor 15 has a contour in the reading region which corresponds to the contour of the leg 19 of the sheet metal part 16 placed on the outer ring 6 of the roller bearing 5.
  • the sensor 15 is attached from the back 25 of the Radlagerflansches 2 forth with serving as a fastener screw 26 on the contact surface 23 of the survey 3, so that the mounting axis 27 of the screw 26 extends parallel to the wheel bearing axis 11.
  • the sensor surface of the sensor head 20 is peripherally provided with at least two spaced-apart webs 28, which abut against the radial outer peripheral surface of the attached to the outer ring 6 of the rolling bearing 5 sheet metal part 16, namely its legs 19.

Abstract

The invention relates to a wheel bearing (1) with a sensor (15) for measuring rotational or angular movements of a wheel of a motor vehicle, with a wheel bearing flange (2) and a roller bearing (4) attached thereto, on whose peripheral inner ring (7) an encoder ring (9) serving as transducer is arranged. The intention is to ensure a reliable operating mode even under the influence of dirt and rust and to be able to attach and detach the wheel bearing (1) with ease. To this end, the sensor (15) is attached parallel to its radial reading direction (24) on a radial contact face (23), pointing to the plane of the encoder ring (9), of the wheel bearing flange (2). Furthermore, a sheet-metal part (16) is fitted on the fixed outer ring (6) of the roller bearing (4), which sheet-metal part (16) covers at least the reading area of the sensor (15) and the encoder ring (9) and serves, in circumferential terms, as contact face for the sensor (15).

Description

Bezeichnung der Erfindung Name of the invention
Radlager mit SensorWheel bearing with sensor
Beschreibungdescription
Gebiet der ErfindungField of the invention
Die Erfindung bezieht sich auf ein Radlager mit einem Sensor zur Messung von Dreh- oder Winkelbewegungen eines Rades eines Kraftfahrzeuges, mit einem Radlagerflansch und einem daran befestigten Wälzlager, an dessen umlaufenden Innenring ein als Messwertgeber dienender Encoderring angeordnet ist.The invention relates to a wheel bearing with a sensor for measuring rotational or angular movements of a wheel of a motor vehicle, with a Radlagerflansch and an attached rolling bearing, on the circumferential inner ring serving as a transmitter encoder ring is arranged.
Hintergrund der ErfindungBackground of the invention
In Radlagern verwendete Sensoren werden insbesondere zur Messung der Drehgeschwindigkeiten und des Drehverhaltens der Räder eines Kraftfahrzeuges benötigt, wobei das Fahrzeug ein Regelsystem enthält, das diese Informationen als Eingangsgrößen des Regelsystems verarbeitet. Solche Regelsysteme dienen beispielsweise zur Blockierschutzregelung, Antriebsschlupfregelung, Fahrstabilitätsregelung und dergleichen. Dabei ist die Messung von direkten Messgrößen vorteilhaft. Zu den Messgrößen zählen Brems- und Antriebsbeschleunigungen, die Raddrehzahl, die Winkelbeschleunigung sowie seitliche, auf das Fahrzeugchassis wirkende Beschleunigungen. Das Radlager ist wegen der Kraftübertragung von der Fahrbahn zum Fahrzeugchassis eine optimale Messstelle zur Erfassung von Kräften und Beschleunigungen.Sensors used in wheel bearings are particularly needed for measuring the rotational speeds and rotational behavior of the wheels of a motor vehicle, the vehicle containing a control system that processes this information as inputs to the control system. Such control systems are used for example for anti-lock control, traction control, driving stability control and the like. In this case, the measurement of direct measured variables is advantageous. Count among the measured variables Brake and drive accelerations, the wheel speed, the angular acceleration and lateral, acting on the vehicle chassis accelerations. The wheel bearing is because of the power transmission from the road to the vehicle chassis an optimal measuring point for detecting forces and accelerations.
Radlager mit Sensoren sind bereits in verschiedenen Ausgestaltungen bekannt. Dabei wird der Sensor auf unterschiedliche Weise am Radlager angeordnet und befestigt. Bei einer Radlagersensoranordnung gemäß der DE 195 32 328 A1 wird ein Sensorkörper in eine Aufnahmeöffnung einer Befestigungslasche eingesetzt, die direkt mit dem stationären Teil des Achskörpers, nämlich dem Radlager-Außenring, verbunden ist, und mit einer Klammer arretiert.Wheel bearings with sensors are already known in various configurations. In this case, the sensor is arranged and fastened in different ways on the wheel bearing. In a wheel bearing sensor assembly according to DE 195 32 328 A1, a sensor body is inserted into a receiving opening of a fastening tab, which is directly connected to the stationary part of the axle body, namely the wheel bearing outer ring, and locked with a clamp.
Aus der DE 197 35 978 A1 ist ein Radlager bekannt, bei dem der Sensor in einer zu einem Impulsgeber offenen Vertiefung des Radträgers angeordnet ist. Dabei liegt die Sensorstirnfläche an einem Lagerteil an und wird durch eine am Vertiefungsboden angeordnete Feder an dieses Lagerteil angedrückt.From DE 197 35 978 A1 discloses a wheel bearing is known in which the sensor is arranged in an open to a pulse generator recess of the wheel carrier. In this case, the sensor end face bears against a bearing part and is pressed against this bearing part by a spring arranged on the recess bottom.
Des Weiteren ist aus der DE 103 38 959 A1 eine Anordnung eines Sensors an einer Radlagereinheit bekannt, wobei der Sensor an einem äußeren Radlagerring der Radlagereinheit befestigt ist und dabei einem zu dem Sensor um eine Drehachse der Radlagereinheit drehbeweglichen Encoder gegen- über liegt. Die Radlagereinheit weist wenigstens eine Reihe Wälzkörper und eine zu der ersten Reihe in Axialrichtung der Drehachse benachbarte zweite Reihe Wälzkörper auf, wobei der Radlagerring wenigstens eine der Reihen umgreift. Der Sensor ist in ein Gehäuse integriert und am äußeren Lagerring mittels eines Hebels befestigt. Der Hebel geht axial von dem Sensor ab und erstreckt sich teilweise radial über den äußeren Lagerring. Ein partiell einge- presster, eingeschraubter oder wahlweise anderweitig festsitzender Bolzen hält den Sensor über den Hebel an dem äußeren Lagerring. Der Encoder ist gegenüber dem Sensor mittels eines Abdeckbleches verdeckt. Hierdurch wird zwar der Encoder vor Verschmutzungen und Rostunterwanderung geschützt, nicht jedoch die Anlagefläche des Sensors.Furthermore, DE 103 38 959 A1 discloses an arrangement of a sensor on a wheel bearing unit, wherein the sensor is fastened to an outer wheel bearing ring of the wheel bearing unit and is opposite to an encoder rotatable relative to the sensor about an axis of rotation of the wheel bearing unit. The wheel bearing unit has at least one row of rolling elements and a second row of rolling elements adjacent to the first row in the axial direction of the rotational axis, wherein the wheel bearing ring surrounds at least one of the rows. The sensor is integrated into a housing and attached to the outer bearing ring by means of a lever. The lever extends axially from the sensor and extends partially radially over the outer race. A partially pressed-in, screwed-in or optionally fixed bolt holds the sensor on the outer bearing ring via the lever. The encoder is concealed from the sensor by means of a cover plate. hereby Although the encoder is protected against contamination and rust infiltration, but not the contact surface of the sensor.
Nachteilig bei diesen bekannten Vorrichtungen ist die verhältnismäßig auf- wendige Befestigung des Sensors am Radlager, insbesondere durch das Vorsehen von zusätzlichen Bauteilen wie Klammern, Federn, Hebel usw.A disadvantage of these known devices is the relatively complicated mounting of the sensor on the wheel bearing, in particular by the provision of additional components such as brackets, springs, levers, etc.
Weiterhin ist der gleichmäßige und gleichzuhaltende Abstand zwischen dem Sensor und dem Encoder, Encoderring bzw. Impulsrad, das heißt der Sen- sorfläche und der zu detektierenden Encoderfläche, ein wichtiges Merkmal für die Funktion der Messvorrichtung am Radlager und des zugehörigen Regelsystems. Eine nicht auszuschließende Rostunterwanderung der Befestigungsfläche des Sensors, insbesondere in dessen Befestigungsbereich, stellt dabei ein nicht zu unterschätzendes Problem dar. Durch Feuchtigkeit verursachte Rostunterwanderung an der Befestigungsfläche des Sensors kann dazu führen, dass der Sensor in Abhängigkeit von seiner Einbaulage axial oder radial vom Encoder weggedrückt wird, so dass sich der Abstand zwischen der Sensorfläche und der Encoderfläche vergrößert. Dies führt häufig zu Signalausfällen des Sensors, so dass eine zuverlässige Drehzahl- oder Drehwinkelmessung am Radlager beeinträchtigt wird.Furthermore, the uniform and constant distance between the sensor and the encoder, encoder ring or impulse wheel, that is the sensor surface and the encoder surface to be detected is an important feature for the function of the measuring device on the wheel bearing and the associated control system. A not undermined Rostunterwanderung the mounting surface of the sensor, in particular in its mounting area, thereby represents a problem not to be underestimated. Moisture caused rust infiltration on the mounting surface of the sensor can cause the sensor depending on its mounting position axially or radially pushed away from the encoder so that the distance between the sensor surface and the encoder surface increases. This often leads to signal failures of the sensor, so that a reliable speed or rotation angle measurement is impaired at the wheel bearing.
Aufgabe der ErfindungObject of the invention
Der Erfindung liegt die Aufgabe zugrunde, ein Radlager mit einem Sensor zu schaffen, das eine sichere Funktionsweise auch unter Einfluss von Verschmutzungen sowie Rost ermöglicht und dabei einfach zu Montieren und Demontieren ist.The invention has for its object to provide a wheel bearing with a sensor that allows safe operation even under the influence of dirt and rust and is easy to assemble and disassemble.
Zusammenfassung der ErfindungSummary of the invention
Die Lösung dieser Aufgabe ergibt sich aus den Merkmalen des Hauptan- Spruchs, während vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung den Unteransprüchen entnehmbar sind.The solution to this problem arises from the characteristics of the main Say, while advantageous embodiments and modifications of the invention, the dependent claims are removable.
Die Erfindung geht somit aus von einem Radlager mit einem Sensor zur Messung von Dreh- oder Winkelbewegungen eines Rades eines Kraftfahrzeuges, mit einem Radlagerflansch und einem daran befestigten Wälzlager, an dessen umlaufenden Innenring ein als Messwertgeber dienender Encoderring angeordnet ist.The invention is thus based on a wheel bearing with a sensor for measuring rotational or angular movements of a wheel of a motor vehicle, with a Radlagerflansch and an attached rolling bearing, on the circumferential inner ring serving as a transmitter Encoder ring is arranged.
Zur Lösung der Aufgabe ist erfindungsgemäß vorgesehen, dass der Sensor parallel zu seiner radialen Leserichtung an einer zur Ebene des Encoderrings weisenden radialen Anlagefläche des Radlagerflansches montiert ist, und am feststehenden Außenring des Wälzlagers ein zumindest den Lesebereich des Sensors und den Encoderring überdeckendes Blechteil aufge- setzt ist, das als umfangsbezogene Anlagefläche für den Sensor dient.To achieve the object, it is provided according to the invention that the sensor is mounted parallel to its radial reading direction on a radial contact surface of the wheel bearing flange pointing to the encoder ring plane, and on the stationary outer ring of the rolling bearing a sheet metal part covering at least the reading range of the sensor and the encoder ring is, which serves as a circumferential contact surface for the sensor.
Da während des Betriebes des Radlagers durch Feuchtigkeit verursachte Rostunterwanderung an einer konventionellen Befestigungsfläche des Sensors auftreten kann, würde die Rostunterwanderung dazu führen, dass der Sensor radial vom Encoder weggedrückt wird. Dadurch könnte sich der Abstand zwischen der Sensorfläche und der Encoderfläche nachteilig vergrößern.Since rust infiltration caused by moisture during operation of the wheel bearing may occur on a conventional mounting surface of the sensor, the rust infiltration would cause the sensor to be pushed radially away from the encoder. This could adversely increase the distance between the sensor surface and the encoder surface.
Erfindungsgemäß ist der Sensor parallel zu seiner radialen Leserichtung an einer zur Ebene des Encoderrings weisenden radialen Anlagefläche des Radlagerflansches montiert.According to the invention, the sensor is mounted parallel to its radial reading direction on a pointing to the encoder ring radial bearing surface of the Radlagerflansches.
Dieses kann vorzugsweise mittels eines Befestigungselementes, insbesondere einer Schraub-, Clips- oder Klebverbindung, erfolgen. Das Befesti- gungselement verhindert dabei eine radiale Bewegung des Sensors relativ zum Encoder auf Grund eben dieser Ausrichtung des Befestigungselementes. Dadurch wird der Sensor in seiner Einbaulage am Radlagerflansch in radialer Richtung fixiert. Eine Rostunterwanderung des Sensors im Bereich der Anlagefläche am Radlagerflansch wird somit verhindert. Dies wiederum führt zu einer sicheren Funktion des Radlagers in Verbindung mit dem zugehörigen Regelsystem, da korrosionsbedingte Signalausfälle verhindert werden. Darüber hinaus ist der Sensor auf einfache Weise zu montieren bezie- hungsweise zu demontieren.This can preferably be done by means of a fastening element, in particular a screw, clip or adhesive bond. The fastening element prevents a radial movement of the sensor relative to the encoder on the basis of just this orientation of the fastener. As a result, the sensor is fixed in its installed position on Radlagerflansch in the radial direction. A rust infiltration of the sensor in the area the contact surface on Radlagerflansch is thus prevented. This in turn leads to a safe operation of the wheel bearing in conjunction with the associated control system, since corrosion-induced signal failures are prevented. In addition, the sensor is easy to assemble or disassemble.
Weiterhin kann hier besonders bevorzugt vorgesehen sein, dass die Befestigung mittels eines unter einem vorgebbaren Winkel, insbesondere mittels eines rechtwinklig, zur Anlagefläche gerichteten Befestigungselementes er- folgt.Furthermore, it may be particularly preferred here for the fastening to take place by means of a fastening element directed at a predeterminable angle, in particular by means of a right-angled fastening element.
Allerdings kann auch hier ein von der Rechtwinkligkeit abweichender Winkel des Befestigungselements gewählt werden, wodurch darüber hinaus eine Verdrehsicherung reaiisert werden kann.However, an angle deviating from the perpendicularity of the fastening element can also be selected here, as a result of which an anti-twist protection can be additionally realized.
Weiterhin wird die sichere Funktionsweise des Sensors erfindungsgemäß noch dadurch unterstützt, dass am feststehenden Außenring des Wälzlagers ein zumindest den Lesebereich des Sensors und den Encoderring überdeckendes Blechteil aufgesetzt ist, das als umfangsbezogene Anlagefläche für den Sensor dient. Infolge des rechtwinklig zur Anlagefläche gerichteten Befestigungselementes für den Sensor wird dieser daran gehindert, im Falle einer Rostunterwanderung sich gegenüber der Befestigungsachse des Befestigungselementes aus seiner normalen Einbaulage zu verdrehen, da die Sensorfläche am den Encoderring überdeckenden Blechteil anliegt.Furthermore, the safe operation of the sensor according to the invention is further supported by the fact that on the fixed outer ring of the bearing a at least the reading range of the sensor and the encoder ring overlapping sheet metal part is placed, which serves as circumferentially-related contact surface for the sensor. Due to the right angle to the contact surface directed fastener for the sensor this is prevented from twisting in the case of rust undercuts against the mounting axis of the fastener from its normal mounting position, since the sensor surface rests on the encoder ring overlapping sheet metal part.
Der Encoderring weist gleichmäßig am Umfang verteilt angeordnete alternativ signalnehmende, signalreflektierende oder signalerzeugende Areale auf. Damit ist der Encoderring mit einer sensierbaren Fläche versehen.The encoder ring has evenly distributed on the circumference arranged alternately signal-receiving, signal-reflecting or signal-generating areas. This provides the encoder ring with a sensible surface.
Gemäß einer weiteren Ausgestaltung der Erfindung ist der Sensor an der radialen Anlagefläche des Radlagerflansches - rechtwinklig oder unter einem von der Rechtwinkligkeit abweichenden Winkel - verschraubt. Dies verhindert ein Verdrehen des Sensors um die Achse der Verschraubung. Dabei ist der Sensor vorzugsweise von der Rückseite des Radlagerflansches her mit einer Schraube an der Anlagefläche befestigt. Eine Verschraubung des Sensors mit dem Radlagerflansch bildet eine sichere und auf einfache Weise zu realisierende Verbindung, durch die auch eine leichte Montage und Demontage des Sensors am Radlager ermöglicht wird. Realisierbar ist selbstverständlich auch eine andersgeartete Befestigung des Sensors, beispielsweise mittels eines Bolzens.According to a further embodiment of the invention, the sensor on the radial bearing surface of the Radlagerflansches - at right angles or at a different angle from the angle - screwed. This prevents twisting of the sensor about the axis of the screw. there the sensor is preferably attached from the back of the Radlagerflansches forth with a screw on the contact surface. A screw connection of the sensor with the Radlagerflansch forms a safe and easy to implement connection, through which also an easy assembly and disassembly of the sensor is made possible at the wheel bearing. Of course, another type of mounting of the sensor can be realized, for example by means of a bolt.
Bei einer weiteren Ausgestaltung des Radlagers weist der Sensor umfangs- seitig an der Sensorfläche mindestens zwei zueinander beabstandete Stege auf, die an der radialen Außenumfangsfläche des am Außenring des Wälzlagers aufgesetzten Blechteils anliegen. Durch die Stege wird ein Verdrehen bzw. Verkippen des Sensors um dessen Befestigungsachse in Bezug zur Encoderfläche insbesondere im Falle einer Rostunterwanderung der Sen- soranlagef lache verhindert.In a further embodiment of the wheel bearing, the sensor on the circumferential side of the sensor surface at least two spaced-apart webs, which rest against the radial outer peripheral surface of the attached to the outer ring of the rolling bearing sheet metal part. The webs prevent twisting or tilting of the sensor about its attachment axis in relation to the encoder surface, in particular in the event of rust infiltration of the sensor installation surface.
Alternativ oder außerdem dazu kann der Sensor im Lesebereich eine Kontur aufweisen, die der Umfangskontur des am Außenring des Wälzlagers aufgesetzten Blechteils entspricht. Auch durch diese Maßnahme wird ein Verdre- hen beziehungsweise Verkippen des Sensors um dessen Befestigungsachse vermieden, da die Konturen der Sensorlesefläche und des Blechteils kongruent sind.Alternatively or in addition to this, the sensor in the reading region may have a contour which corresponds to the peripheral contour of the sheet metal part placed on the outer ring of the rolling bearing. Also by this measure, a twisting or tilting of the sensor is avoided around its mounting axis, since the contours of the sensor reading surface and the sheet metal part are congruent.
Um ein Rosten des am Außenring des Wälzlagers aufgesetzten Blechteils zu verhindern, besteht das Blechteil aus einem nichtrostenden Material.In order to prevent rusting of the sheet metal part placed on the outer ring of the roller bearing, the sheet metal part consists of a stainless material.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung wird im Folgenden an Hand der beiliegenden Zeichnung an einem Ausführungsbeispiel näher erläutert. Darin zeigt Fig. 1 eine perspektivische Vorderansicht eines Radlagers gemäß derThe invention will be explained in more detail below with reference to the accompanying drawings of an embodiment. It shows Fig. 1 is a front perspective view of a wheel bearing according to the
Erfindung, und Fig. 2 eine perspektivische Rückseitenansicht des Radlagers nach Fig.Invention, and Fig. 2 is a rear perspective view of the wheel bearing of FIG.
1.1.
Detaillierte Beschreibung der ZeichnungenDetailed description of the drawings
Das in den Figuren 1 und 2 gezeigte Radlager 1 eines nicht dargestellten Rades eines Kraftfahrzeuges besitzt einen Radlagerflansch 2, der eine im Wesentlichen Dreieckform mit abgerundeten Ecken besitzt. Eine der Seiten des Radlagerflansches 2 ist mit einer Erhebung 3 versehen. Das Radlager 1 umfasst ein Wälzlager 4, das ein-, zwei- oder vierreihige Wälzkörpersätze, aber auch alle anderen möglichen Radlagersätze mit Rollen oder Kugeln als Wälzkörper 5 aufweisen kann. Das Wälzlager 4 hat einen feststehenden Außenring 6 und einen axial verlängerten und drehbaren Innenring 7, zwischen denen die Wälzkörper 5 in einem Wälzlagerkäfig 8 gelagert sind.The wheel bearing 1 of a motor vehicle, not shown, shown in Figures 1 and 2 has a Radlagerflansch 2, which has a substantially triangular shape with rounded corners. One of the sides of Radlagerflansches 2 is provided with a survey 3. The wheel bearing 1 comprises a roller bearing 4, which may have one, two or four row Wälzkörpersätze, but also all other possible wheel bearing sets with rollers or balls as rolling elements 5. The rolling bearing 4 has a fixed outer ring 6 and an axially elongated and rotatable inner ring 7, between which the rolling elements 5 are mounted in a roller bearing cage 8.
Auf dem sich drehenden Innenring 7 des Wälzlagers 5 ist ein Encoderring 9 aufgesteckt, der eine im Querschnitt etwa U-Form besitzt, wobei der Boden 10 der U-Form radial zur Radlagerachse 11 verläuft, der kürzere Schenkel 12 der U-Form koaxial zwischen den Innenring 7 und den Außenring 6 ragt, und der längere Schenkel 13 der U-Form koaxial und nach außerhalb des Außenringes 6 ragt. Der mit dem Innenring 7 drehende Encoderring 9 weist eine Vielzahl gleichmäßig am Umfang verteilt angeordnete alternativ signalnehmende, signalreflektierende oder signalerzeugende Areale 14 auf, die durch einen Sensor 15 detektierbar sind. Der Encoderring 9 kann wechselseitig polarisiert aus ei- nem magnetisierten Material, wie Polyamid-Kunststoff, oder aus magnetisier- tem oder ferromagnetischem Metall oder einer Kombination aus diesen Materialien bestehen.On the rotating inner ring 7 of the rolling bearing 5, an encoder ring 9 is attached, which has a U-shape in cross section, the bottom 10 of the U-shape extends radially to the wheel bearing axis 11, the shorter leg 12 of the U-shape coaxial between the Inner ring 7 and the outer ring 6 projects, and the longer leg 13 of the U-shape coaxially and outwardly of the outer ring 6 protrudes. The rotating with the inner ring 7 encoder ring 9 has a plurality of evenly distributed around the circumference arranged alternately signal-receiving, signal-reflecting or signal-generating areas 14, which are detectable by a sensor 15. The encoder ring 9 can be mutually polarized from a magnetized material, such as polyamide plastic, or from magnetized or ferromagnetic metal or a combination of these materials.
Am feststehenden Außenring 6 des Wälzlagers 4 ist ein aus einem nichtros- tenden Material bestehendes Blechteil 16 aufgesteckt, das als umfangsbe- zogene Anlagefläche für den Sensor 15 dient. Das Blechteil 16 besitzt im Querschnitt einen Schenkel 17, der sich zunächst radial zur Radlagerachse 11 nach außen und dann in einem rechten Winkel koaxial zur Radlagerachse 11 um die Umfangsfläche des Außenringes 6 hin zum Radlagerflansch 2 erstreckt. Im weiteren Verlauf kehrt sich das Blechteil 16 unter Bildung eines Spaltes 18 um 180° koaxial zur Radlagerachse 11 um, und der verbleibende Schenkel 19 verläuft koaxial zur Radlagerachse 11 weg vom Radlagerflansch 2, wobei die axiale Abschlusskante des Schenkels 19 etwa zur Bodenebene des Encoderringes 9 bündig ist. Somit ragt der Schenkel 13 des Encoderringes 9 axial in den durch das Blechteil 16 gebildeten Spalt 18.On the stationary outer ring 6 of the rolling bearing 4, a sheet metal part 16 consisting of a non-limiting material is plugged, which serves as a circumferential contact surface for the sensor 15. The sheet metal part 16 has in cross section a leg 17 which extends radially outward from the wheel bearing axis 11 and then at a right angle coaxial to the wheel bearing axis 11 around the peripheral surface of the outer ring 6 towards the wheel bearing flange 2. In the further course, the sheet metal part 16 is reversed to form a gap 18 by 180 ° coaxial with the wheel bearing axis 11, and the remaining leg 19 extends coaxially with the wheel bearing axis 11 away from the Radlagerflansch 2, wherein the axial end edge of the leg 19 approximately to the bottom plane of the encoder ring. 9 is flush. Thus, the leg 13 of the encoder ring 9 projects axially into the gap 18 formed by the sheet metal part 16.
Der Sensor 15 dient zur Messung von Dreh- oder Winkelbewegungen eines Rades des Kraftfahrzeuges und besteht im Wesentlichen aus einem Sensorkopf 20 und einem Sensorgehäuse 21 , aus dem ein Sensorkabel 22 zu einem nicht dargestellten Regelsystem des Kraftfahrzeuges führt. Der Sensor 15 ist an einer planen Anlagefläche 23 der Erhebung 3 des Radlagerflansches 2 befestigt, die in Fig. 1 dunkel eingefärbt dargestellt ist und sich radial zur Radlagerachse 11 erstreckt sowie in der Ebene der Vorderseite des Radlagerflansches 2 liegt. Der Sensorkopf 20, dessen Leserichtung durch den Pfeil 24 in Fig. 1 verdeutlicht wird, ist somit derart ausgerichtet, dass dessen Sensorfläche an der Außenumfangf lache des Schenkels 19 des Blechteils 16 anliegt. Damit befindet sich die Sensorfläche kongruent zu den gleichmäßig am Umfang ver- teilt angeordneten Arealen 14 des Encoderringes 9 und kann diese detektie- ren. Die Signale bzw. Messdaten werden über das Sensorkabel 22 an das Regelsystem des Kraftfahrzeuges übertragen. Die Sensorfläche des Sensors 15 weist im Lesebereich eine Kontur auf, die der Kontur des Schenkels 19 des am Außenring 6 des Wälzlagers 5 aufgesetzten Blechteils 16 entspricht.The sensor 15 is used to measure rotational or angular movements of a wheel of the motor vehicle and consists essentially of a sensor head 20 and a sensor housing 21, from which a sensor cable 22 leads to a control system, not shown, of the motor vehicle. The sensor 15 is attached to a flat contact surface 23 of the survey 3 of the Radlagerflansches 2, which is shown in dark color in Fig. 1 and extends radially to the wheel bearing axis 11 and lies in the plane of the front of the Radlagerflansches 2. The sensor head 20, whose reading direction is illustrated by the arrow 24 in Fig. 1, is thus aligned so that its sensor surface on the Außenumfangf laugh of the leg 19 of the sheet metal part 16 is applied. As a result, the sensor surface is congruent with the areas 14 of the encoder ring 9 that are distributed uniformly around the circumference and can detect them. The signals or measured data are transmitted via the sensor cable 22 to the control system of the motor vehicle. The sensor surface of the sensor 15 has a contour in the reading region which corresponds to the contour of the leg 19 of the sheet metal part 16 placed on the outer ring 6 of the roller bearing 5.
Der Sensor 15 ist von der Rückseite 25 des Radlagerflansches 2 her mit einer als Befestigungselement dienenden Schraube 26 an der Anlagefläche 23 der Erhebung 3 befestigt, so dass sich die Befestigungsachse 27 der Schraube 26 parallel zur Radlagerachse 11 erstreckt.The sensor 15 is attached from the back 25 of the Radlagerflansches 2 forth with serving as a fastener screw 26 on the contact surface 23 of the survey 3, so that the mounting axis 27 of the screw 26 extends parallel to the wheel bearing axis 11.
Weiterhin ist die Sensorfläche des Sensorkopfes 20 umfangsseitig mit mindestens zwei zueinander beabstandeten Stege 28 versehen, die an der radialen Außenumfangsfläche des am Außenring 6 des Wälzlagers 5 aufgesetzten Blechteils 16, nämlich dessen Schenkel 19 anliegen. Furthermore, the sensor surface of the sensor head 20 is peripherally provided with at least two spaced-apart webs 28, which abut against the radial outer peripheral surface of the attached to the outer ring 6 of the rolling bearing 5 sheet metal part 16, namely its legs 19.
Bezugszeichenreference numeral
1 Radlager1 wheel bearing
2 Radlagerflansch2 wheel bearing flange
3 Erhebung3 survey
4 Wälzlager4 rolling bearings
5 Wälzkörper5 rolling elements
6 Außenring6 outer ring
7 Innenring7 inner ring
8 Wälzlagerkäfig8 rolling bearing cage
9 Encoderring9 encoder ring
10 Boden10 floor
11 Radlagerachse11 wheel bearing axle
12 Schenkel12 thighs
13 Schenkel13 thighs
14 Areale14 areas
15 Sensor15 sensor
16 Blechteil16 sheet metal part
17 Schenkel17 thighs
18 Spalt18 gap
19 Schenkel19 thighs
20 Sensorkopf20 sensor head
21 Sensorgehäuse21 sensor housing
22 Sensorkabel22 sensor cables
23 Anlagefläche23 contact surface
24 Leserichtung24 Reading direction
25 Rückseite25 back side
26 Schraube26 screw
27 Befestigungsachse27 attachment axis
28 Stege 28 bridges

Claims

Patentansprüche claims
1. Radlager (1 ) mit einem Sensor (15) zur Messung von Dreh- oder Winkelbewegungen eines Rades eines Kraftfahrzeuges, mit einem Radlagerflansch (2) und einem daran befestigten Wälzlager (4), an dessen umlaufenden Innenring (7) ein als Messwertgeber dienender Encoderring (9) angeordnet ist, dadurch gekennzeichnet, dass der Sensor (15) parallel zu seiner radialen Leserichtung (24) an einer zur Ebene des Encoderrings (9) weisenden radialen Anlagefläche (23) des Radlagerflansches (2) montiert ist, und am feststehenden Außenring (6) des Wälzlagers (4) ein zumindest den Lesebereich des Sensors (15) und den Encoderring (9) überdeckendes Blechteil (16) aufgesetzt ist, das als umfangsbezogene Anlagefläche für den Sensor (15) dient.1. Wheel bearing (1) with a sensor (15) for measuring rotational or angular movements of a wheel of a motor vehicle, with a Radlagerflansch (2) and an attached rolling bearing (4), at its peripheral inner ring (7) serving as a transmitter Encoder ring (9) is arranged, characterized in that the sensor (15) is mounted parallel to its radial reading direction (24) pointing to a plane of the encoder ring (9) radial bearing surface (23) of the Radlagerflansches (2), and on the fixed Outer ring (6) of the rolling bearing (4) a at least the reading range of the sensor (15) and the encoder ring (9) overlapping sheet metal part (16) is placed, which serves as circumferentially-related contact surface for the sensor (15).
2. Radlager nach Anspruch 1 , dadurch gekennzeichnet, dass der Sensor (15) an der radialen Anlagefläche (23) mittels eines Befestigungselementes (26) montiert, insbesondere verschraubt, ist.2. Wheel bearing according to claim 1, characterized in that the sensor (15) on the radial contact surface (23) by means of a fastening element (26) mounted, in particular screwed, is.
3. Radlager nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Sensor (15) an der radialen Anlagefläche (23) mittels eines unter einem vorgebbaren Winkel, insbesondere eines rechtwinklig, zur Anlagefläche (23) gerichteten Befesti- gungselementes (26) montiert ist, insbesondere durch eine Schraubverbindung verschraubt ist. 3. Wheel bearing according to at least one of the preceding claims, characterized in that the sensor (15) on the radial abutment surface (23) by means of a fastening element (26) directed at a predetermined angle, in particular a right angle to the contact surface (23) mounted is, in particular screwed by a screw connection.
4. Radlager nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Sensor (15) von der Rückseite (25) des Radlagerflansches (2) her mit einer Schraube (26) an der Anlagefläche (23) befestigt ist.4. Wheel bearing according to at least one of the preceding claims, characterized in that the sensor (15) from the rear side (25) of the Radlagerflansches (2) is fixed with a screw (26) on the contact surface (23).
5. Radlager nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Sensor (15) umfangsseitig an der Sensorfläche mindestens zwei zueinander beabstandete Stege (28) aufweist, die an der radialen Außenumfangsfläche des am Außenring (6) des Wälzlagers (4) aufgesetzten Blechteils (16) anliegen.5. Wheel bearing according to at least one of the preceding claims, characterized in that the sensor (15) peripherally on the sensor surface at least two spaced-apart webs (28) which on the outer radial surface of the outer ring (6) of the rolling bearing (4) placed Sheet metal part (16) abut.
6. Radlager nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Sensor (15) im Lesebereich eine Kontur aufweist, die der Kontur des am Außenring (6) des Wälzlagers (4) aufgesetzten Blechteils (16) im Wesentlichen entspricht.6. Wheel bearing according to at least one of the preceding claims, characterized in that the sensor (15) in the reading area has a contour which corresponds to the contour of the outer ring (6) of the rolling bearing (4) patch sheet metal part (16) substantially.
7. Radlager nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das am Außenring (6) des Wälzlagers (4) aufgesetzte Blechteil (16) aus einem nichtrostenden Material be- steht.7. Wheel bearing according to at least one of the preceding claims, characterized in that the outer ring (6) of the rolling bearing (4) patch sheet metal part (16) consists of a stainless material.
8. Radlager nach mindestens einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Encoderring (9) gleichmäßig am Umfang verteilt angeordnete alternativ signalnehmende, signalreflek- tierende oder signalerzeugende Areale (14) aufweist. 8. wheel bearing according to at least one of the preceding claims, characterized in that the encoder ring (9) evenly distributed around the circumference arranged alternately signal-receiving, signal-reflecting or signal-generating areas (14).
EP06828606A 2005-12-13 2006-12-05 Wheel bearing with sensor Withdrawn EP1960795A1 (en)

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WO2007068235A1 (en) 2007-06-21
DE102005059393A1 (en) 2007-06-14

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