WO2016005549A1 - Magnetic encoder on shaft circumference - Google Patents

Magnetic encoder on shaft circumference Download PDF

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Publication number
WO2016005549A1
WO2016005549A1 PCT/EP2015/065799 EP2015065799W WO2016005549A1 WO 2016005549 A1 WO2016005549 A1 WO 2016005549A1 EP 2015065799 W EP2015065799 W EP 2015065799W WO 2016005549 A1 WO2016005549 A1 WO 2016005549A1
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WO
WIPO (PCT)
Prior art keywords
sensor
signal element
carrier body
signal
peripheral surface
Prior art date
Application number
PCT/EP2015/065799
Other languages
German (de)
French (fr)
Inventor
Jens Habig
Martin Haverkamp
S. Orcun Yapici
Original Assignee
Continental Teves Ag & Co. Ohg
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 Continental Teves Ag & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Publication of WO2016005549A1 publication Critical patent/WO2016005549A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • 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
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

Definitions

  • the invention relates to a position sensor element for a sensor for detecting a rotation according to the preamble of claim 1 and a sensor with a position sensor element.
  • Position transmitter elements with a magnetic encoder are known from the prior art.
  • the magnet encoder is incorporated on an end face of a shaft element and serves as a position sensor for a sensor.
  • the arrangement of the magnet ⁇ coders on the end face has the advantage that the diameter of the Magnetcoders can be variably adjusted in the range of the diameter of the end face of the shaft member.
  • the arrangement of the magnetic encoder on the end face has the disadvantage that when changing the external temperature, the expansion of the waves ⁇ elements is not equal to the extension of the magnetic encoder, resulting in additional mechanical stresses. In practice, therefore, often an elastic intermediate layer between the shaft member and the magnetic encoder is installed, which should compensate for the mechanical stresses or strains.
  • the object of the invention is therefore to show a sensor or a position sensor element that overcomes these disadvantages.
  • the invention makes use of the knowledge that the typical mechanical loads occurring during use are substantially more evenly distributed by rotation of the carrier body in the region of the circumferential surface than in the area of the end face.
  • the peripheral surface comprises the region of the carrier body which is arranged between the two end faces of the carrier body. It is immaterial whether the peripheral surface is formed flat or contoured.
  • the term peripheral surface encompasses the entire surface which connects the two end faces.
  • the arrangement of the signal element on the peripheral surface has the advantage that the mechanical stresses due to expansion of the carrier body at each point of the peripheral surface occur substantially uniformly and the signal element is easier to adjust it. The centrifugal forces act substantially evenly on the contact surface or contact surface of the signal element to the carrier body.
  • the contact surface of the signal ⁇ elements on the support body by the size of the peripheral surface without major problems can be increased so that pressure peaks can be avoided more easily than if one would arrange the signal element on the end face of the support body.
  • the stresses caused by thermal expansion are distributed evenly over the contact surface of the signal element on the carrier body, so that the signal element is easily interpretable to the respective loads.
  • the disadvantage of possibly increased expense in the production of the position sensor element can be circumvented by suitable manufacturing processes, as described below.
  • the carrier body is usually out ⁇ forms as a shaft member which is fixed to a rotating shaft itself.
  • the carrier body is disc-shaped.
  • the carrier body is designed as a metal body.
  • Trä ⁇ gerraj thus not about a shaft itself, but one on a shaft or the like. attachable body.
  • the thickness of the carrier body is designed so that the signal element covers the peripheral surface almost completely.
  • the shaft itself is the support body for the Sig ⁇ nalelement. The signal element would then be arranged on the lateral surface of the shaft.
  • the positional element according to the invention is further formed in front part ⁇ manner that the signal element has a base body and bound therein magnetic particles.
  • a signal element constructed in this way can be arranged particularly simply on the carrier body.
  • the positional element according to the invention is further developed in some exemplary prior ⁇ a manner that the material of the Ba sis stressess includes an elastomer, and the magnetic particles are magnetic particles connectable with the elastomer. Elastomers are particularly well suited because of their ease of molding and elasticity as a base body for the signal element.
  • the positional element according to the invention is further formed in front part ⁇ manner that the magnetic particles are sintered particles in the base body. In this way, a high resistance of the signal element can be achieved.
  • the positional element according to the invention is further formed in front part ⁇ manner that the support body of the base body of the signalment is or forms the latter. Instead of a separate base body for the magnetic particles, the magnetic particles are directly on the support body in the area of Applied circumferential surface.
  • the signal element is fastened particularly durable on the carrier body.
  • the position element according to the invention is further developed in an advantageous manner in that the signal element is designed as a magnetizable track, which is applied on the peripheral surface of the carrier body.
  • the position element according to the invention is further developed in an advantageous manner such that the carrier body has a depression or a groove on the peripheral surface into which the signal element can be inserted.
  • This shape of the peripheral surface is particularly well suited for receiving the signal element with a base body.
  • the position element according to the invention is thereby further developed in an advantageous manner that the trough has a U-shape.
  • the positional element according to the invention is further developed in some exemplary prior ⁇ a manner that the signal element is designed as a magnetic element, which he attests ⁇ a magnetic field whose magnetic effect propagates substantially in the axial direction of the carrier Köpers.
  • the positional element according to the invention is further developed in some exemplary prior ⁇ a manner that the signal element has a substantially U-shaped cross section, said Sig ⁇ nalelement is aligned in the groove in such a way that the opening of the U shape is directed radially outward.
  • the magnetic effect can be made particularly strong by the shaping in the region between the flanks of the signal element, so that in this way the signal quality can be improved.
  • the positional element according to the invention is further developed in some exemplary prior ⁇ a manner that the signal element and whose side walls are formed substantially flush locking with the peripheral surface of the carrier body.
  • the object is further achieved according to a second aspect of the invention by means of a sensor according to the second independent claim.
  • the sensor according to the invention is further developed in an advantageous manner that the sensor element has a printed circuit board, which is formed circular segment, wherein the radius is selected such that an edge region of the printed circuit board with a uniform distance to the signal element can be positioned.
  • the sensor element can ⁇ particularly advantageously between the flanks of the Sig ⁇ nalelements and as close as possible to the signal element positio ⁇ kidney in order to achieve a higher signal quality. Furthermore, this arrangement is particularly space-saving.
  • the sensor according to the invention is further developed in an advantageous manner in that the sensor element is arranged between the end faces of the carrier body adjacent to the signal element.
  • the sensor according to the invention is further developed in an advantageous manner in that the sensor has a plurality of sensor elements.
  • FIG. 1 shows a perspective partial view of a first exemplary embodiment of the sensor according to the invention
  • FIG. 2 shows a sectional view onto a partial cross section of the position-indicating element according to the first embodiment
  • Figure 3 is a sectional view on a partial cross section of the position sensor element according to a second
  • FIG. 4 shows a sectional view onto a partial cross section of the position-indicating element according to a third exemplary embodiment
  • Figure 1 shows the essential parts of the sensor of the invention, namely, a position sensor element 10 of the invention and two disposed on a printed circuit board 50 Sen ⁇ sorieri 51, 52.
  • the sensor elements 51, 52 are as like ⁇ -magnetic sensor elements are formed, the ⁇ donor element specified by the position signals to capture.
  • the position sensor element 10 is equipped with a signal element 11 which has alternating magnetic poles in a ring formation.
  • the invention is not limited to this form of the signal element.
  • Other parts of the sensor, such as a housing, connectors, etc. have been hidden from the figures for better representation of the aforementioned elements.
  • the position sensor element 10 has a carrier body 11 with two axial end faces 12, 13, wherein the second end face 13 of the carrier body 11 is concealed in FIG.
  • the end faces 12 and 13 are connected by means of a circumferential surface 14, which is here largely covered by the signal element 20.
  • a better view of the peripheral surface is shown in Figures 2 to 4.
  • the carrier body 10 is made of a metallic material and is annular. In this way, the carrier body on a shaft or the like. be attached.
  • the inner peripheral surface 15 and the end faces 12, 13 can be provided with an arbitrary contour as required and have no significant influence on the execution of the invention.
  • the signal element 20 is arranged on the outer peripheral surface or peripheral surface 14 of the carrier body 10. As can be seen in FIGS.
  • the circumferential surface is contoured due to the depression 16 between the end surfaces.
  • the signal element 20 is disposed or incorporated within the trough 16.
  • the depth of the trough is designed so that it can receive the signal element 20 We ⁇ sentlichen complete and the upper or radially outer edges of the signal element is substantially flush with the radially outer edges of the peripheral surface 14 ends.
  • a contact surface which covers substantially the entire peripheral surface 14. Radially outward forces are distributed evenly over the contact surface.
  • the signal element 20 has a base body 21, in which magnetic particles are incorporated. These can be incorporated into the base body 21 in different ways.
  • the embodiment shown in Figure 1 shows a base body 21 made of an elastomer.
  • the base body 21 of the signal element 20 has a substantially U-shaped cross-section, wherein the opening of the U-shape in the radial direction facing outwards.
  • the side walls or flanks of the base body 21 extend in the radial direction and partially surround a small area into which the sensor elements 51, 52 can be arranged.
  • the two flanks of the sensor element 20 make it possible to build up a magnetic field which extends in regions in the axial direction, which is for detecting the rotation of the Carrier body is particularly advantageous.
  • the sensor elements are constructed and posi ⁇ tioniert so that they are disposed within the space enclosed by the signal element 20 range.
  • the printed circuit board is a circular segment 50 is formed from ⁇ and the radius of the printed circuit board corresponds approximately to the outer radius of the base body 21 so that an edge portion of the printed circuit board is positioned at a uniform distance from the signal element 21st
  • FIGS 3 and 4 show two alternative embodiments.
  • the reference numerals of identical elements have been retained for the second and third embodiments.
  • the carrier body 11 has a circumferential surface 14b, which merges into an open end surface 12b.
  • the end face 12b opposite this end face 12b has a larger outer radius than the end face 12b, so that the support body 11 has a semi-open U-profile in the area of the circumferential face 14b and the signal element 20b can be supported thereon.
  • the signal element 20b is further formed substantially with a U-shaped cross section, wherein the side facing the open end face 12b of the base body 21b signal ⁇ elements 20b flush with the open end face 12b and closes also engages around a rounding 17, which is arranged in the transition from the peripheral surface 14b to the open end face 12b.
  • the open end face 12b is widened in this way by the base body 21b, so that the flanks of the base body 21b further enclose a region 16 in which the sensor elements 51, 52 can be arranged.
  • FIG. 4 shows a third exemplary embodiment that is similar to the second exemplary embodiment.
  • the signal element 20 is now provided with a base body 21c, which is also open to the open end face 12b.
  • the cross section of the base body therefore resembles an L-shape.
  • the sensor elements 51, 52 are disposed adjacent to the radially extending edge of the Ba ⁇ sis stressess 21c.
  • the semi-open profile of the carrier body 11 allows a simpler attachment of the signal element 20b, 20c to the carrier body.
  • the third embodiment also has the advantage that the positioning of the sensor elements 51, 52 adjacent to the signal element 20c is easier, even under tight space conditions.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The invention relates to a position transmitting element (10) for a sensor (1) for detecting a rotation, having - a support element (11) with two axial bases (12, 12b, 12c, 13) and a circumferential surface (14, 14b) which connects the two bases (12, 12b, 12c, 13), and - at least one signaling element (20, 20b, 20c) which can be coded in multiple sections that are magnetically different from one another. The sections can be detected by a sensor element (51, 52) in order to measure a rotational movement, and the signaling element (20, 20b, 20c) is attached to the support element (11). The invention is characterized in that the signaling element (20, 20b, 20c) is arranged on the circumferential surface (14, 14b) of the support element (11).

Description

Beschreibung description
Magnetischer Encoder am Wellenumfang Die Erfindung betrifft ein Positionsgeberelement für einen Sensor zum erfassen einer Drehung gemäß dem Oberbegriff des Anspruchs 1 sowie einen Sensor mit einem Positionsgeberelement. The invention relates to a position sensor element for a sensor for detecting a rotation according to the preamble of claim 1 and a sensor with a position sensor element.
Aus dem Stand der Technik sind Positionsgeberelemente mit einem Magnetencoder bekannt. Der Magnetencoder ist auf einer Stirnfläche eines Wellenelementes eingearbeitet und dient als Positionsgeber für einen Sensor. Die Anordnung des Magneten¬ coders auf der Stirnfläche hat dabei den Vorteil, dass der Durchmesser des Magnetencoders variabel im Bereich des Durchmessers der Stirnfläche des Wellenelements eingestellt werden kann. Es hat sich jedoch als nachteilig herausgestellt, dass die Zentrifugalkräfte bei der Rotation des Wellenelements mechanische Belastungen verursachen, die sich negativ auf die Verbindung zwischen Magnetencoder und Wellenelement oder auf den Magnetencoder selbst auswirken. Ferner hat die Anordnung des Magnetencoders auf der Stirnfläche den Nachteil, dass bei Veränderung der Außentemperatur die Ausdehnung des Wellen¬ elements ungleich der Ausdehnung des Magnetencoders ist, was zu zusätzlichen mechanischen Spannungen führt. In der Praxis wird daher oftmals eine elastische Zwischenschicht zwischen dem Wellenelement und dem Magnetencoder eingebaut, welche die mechanischen Spannungen bzw. Belastungen kompensieren sollen. Position transmitter elements with a magnetic encoder are known from the prior art. The magnet encoder is incorporated on an end face of a shaft element and serves as a position sensor for a sensor. The arrangement of the magnet ¬ coders on the end face has the advantage that the diameter of the Magnetcoders can be variably adjusted in the range of the diameter of the end face of the shaft member. However, it has been found to be disadvantageous that the centrifugal forces during the rotation of the shaft member cause mechanical loads, which have a negative effect on the connection between the magnetic encoder and shaft element or on the magnetic encoder itself. Further, the arrangement of the magnetic encoder on the end face, has the disadvantage that when changing the external temperature, the expansion of the waves ¬ elements is not equal to the extension of the magnetic encoder, resulting in additional mechanical stresses. In practice, therefore, often an elastic intermediate layer between the shaft member and the magnetic encoder is installed, which should compensate for the mechanical stresses or strains.
Die Aufgabe der Erfindung ist es daher einen Sensor bzw. einen Positionsgeberelement aufzuzeigen, das diese Nachteile über¬ windet . The object of the invention is therefore to show a sensor or a position sensor element that overcomes these disadvantages.
Die Aufgabe wird gelöst gemäß einem 1. Aspekt der Erfindung mittels eines Positionsgeberelements mit den Merkmalen nach Anspruch 1. Der Gegenstand der abhängigen Ansprüche wird durch Bezugnahme ausdrücklich zum Inhalt der Beschreibung gemacht. The object is achieved according to a first aspect of the invention by means of a position sensor element with the features Claim 1. The subject matter of the dependent claims is expressly incorporated herein by reference.
Die Erfindung macht sich die Erkenntnis zunutze, dass die während der Nutzung auftretenden typischen mechanischen Belastungen durch Rotation des Trägerkörpers im Bereich der Umfangsfläche wesentlich gleichmäßiger verteilt sind als im Bereich der Stirnfläche. Die Umfangsfläche umfasst dabei den Bereich des Trägerkörpers, der zwischen den beiden Stirnflächen des Trä- gerkörpers angeordnet ist. Dabei ist es unwesentlich, ob die Umfangsfläche ebenförmig oder konturiert ausgebildet ist. Im Sinne der Erfindung umfasst der Begriff Umfangsfläche die gesamte Fläche, welche die beiden Stirnseiten verbindet. Die Anordnung des Signalelements an der Umfangsfläche hat den Vorteil, dass die mechanischen Belastungen durch Ausdehnung des Trägerkörpers an jeder Stelle der Umfangsfläche im Wesentlichen gleichmäßig auftreten und das Signalelement einfacher darauf einstellbar ist. Die Zentrifugalkräfte wirken im Wesentlich gleichmäßig auf der Kontaktfläche bzw. Auflagefläche des Signalelements zum Trägerköper. Des weiteren kann die Auflagefläche des Signal¬ elements an dem Trägerkörper durch die Größe der Umfangsfläche ohne größere Probleme so vergrößert werden kann, so dass sich Druckspitzen leichter vermeiden lassen, als wenn man das Signalelement auf der Stirnfläche des Trägerkörpers anordnen würde. Auch die durch thermische Ausdehnung verursachten Spannungen verteilen sich gleichmäßig über die Auflagefläche des Signalelements am Trägerkörper, so dass das Signalelement einfach an die jeweiligen Belastungen auslegbar ist . Der Nachteil des möglicherweise erhöhten Aufwandes bei der Herstellung des Positionsgeberelements kann durch geeignete Herstellprozesse, wie nachfolgend beschrieben, umgangen werden. The invention makes use of the knowledge that the typical mechanical loads occurring during use are substantially more evenly distributed by rotation of the carrier body in the region of the circumferential surface than in the area of the end face. The peripheral surface comprises the region of the carrier body which is arranged between the two end faces of the carrier body. It is immaterial whether the peripheral surface is formed flat or contoured. For the purposes of the invention, the term peripheral surface encompasses the entire surface which connects the two end faces. The arrangement of the signal element on the peripheral surface has the advantage that the mechanical stresses due to expansion of the carrier body at each point of the peripheral surface occur substantially uniformly and the signal element is easier to adjust it. The centrifugal forces act substantially evenly on the contact surface or contact surface of the signal element to the carrier body. Furthermore, the contact surface of the signal ¬ elements on the support body by the size of the peripheral surface without major problems can be increased so that pressure peaks can be avoided more easily than if one would arrange the signal element on the end face of the support body. The stresses caused by thermal expansion are distributed evenly over the contact surface of the signal element on the carrier body, so that the signal element is easily interpretable to the respective loads. The disadvantage of possibly increased expense in the production of the position sensor element can be circumvented by suitable manufacturing processes, as described below.
Der Trägerkörper ist üblicherweise als Wellenelement ausge¬ bildet, der an eine sich rotierende Welle befestigt wird. Typischerweise ist der Trägerkörper scheibenförmig geformt. Vorteilhafterweise ist der Trägerkörper als Metallkörper ausgebildet ist. Vorzugsweise handelt es sich bei dem Trä¬ gerkörper somit nicht um eine Welle selbst, sondern einem auf einer Welle oder dgl . anbringbaren Körper. Die Dicke des Trägerkörpers ist dabei so ausgelegt, dass das Signalelement die Umfangsfläche nahezu vollständig bedeckt. Es ist jedoch auch denkbar, dass die Welle selbst den Trägerkörper für das Sig¬ nalelement darstellt. Das Signalelement würde dann auf der Mantelfläche der Welle angeordnet sein. The carrier body is usually out ¬ forms as a shaft member which is fixed to a rotating shaft itself. Typically, the carrier body is disc-shaped. Advantageously, the carrier body is designed as a metal body. Preferably, in which Trä ¬ gerkörper thus not about a shaft itself, but one on a shaft or the like. attachable body. The thickness of the carrier body is designed so that the signal element covers the peripheral surface almost completely. However, it is also conceivable that the shaft itself is the support body for the Sig ¬ nalelement. The signal element would then be arranged on the lateral surface of the shaft.
Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass das Signalelement einen Basiskörper und darin gebundene magnetische Partikel. Ein so aufgebautes Signalelement kann besonders einfach auf dem Trägerkörper angeordnet werden. The positional element according to the invention is further formed in front part ¬ manner that the signal element has a base body and bound therein magnetic particles. A signal element constructed in this way can be arranged particularly simply on the carrier body.
Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass das Material des Ba- siskörpers einen Elastomer enthält und die magnetischen Partikel mit dem Elastomer verbindbare Magnetpartikel sind. Elastomere eignen sich besonders aufgrund ihrer einfachen Formbarkeit und Elastizität gut als Basiskörper für das Signalelement. Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass die magnetischen Partikel in den Basiskörper gesinterte Partikel sind. Auf diese Weise ist eine hohe Beständigkeit des Signalelements erreichbar. Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass der Trägerkörper der Basiskörper des Signalements ist bzw. diesen bildet. Anstelle eines separaten Basiskörpers für die Magnetpartikel, werden die Magnetpartikel direkt auf dem Trägerkörper im Bereich der Umfangsflache aufgebracht. Das Signalelement ist besonders haltbar an dem Trägerkörper befestigt. Die vorgenannten The positional element according to the invention is further developed in some exemplary prior ¬ a manner that the material of the Ba siskörpers includes an elastomer, and the magnetic particles are magnetic particles connectable with the elastomer. Elastomers are particularly well suited because of their ease of molding and elasticity as a base body for the signal element. The positional element according to the invention is further formed in front part ¬ manner that the magnetic particles are sintered particles in the base body. In this way, a high resistance of the signal element can be achieved. The positional element according to the invention is further formed in front part ¬ manner that the support body of the base body of the signalment is or forms the latter. Instead of a separate base body for the magnetic particles, the magnetic particles are directly on the support body in the area of Applied circumferential surface. The signal element is fastened particularly durable on the carrier body. The aforementioned
Das erfindungsgemäße Positionselement wird dadurch in vor- teilhafter Weise weitergebildet, dass das Signalelement als eine magnetisierbare Spur ausgebildet ist, die auf der Umfangsfläche des Trägerkörpers aufgetragen ist. The position element according to the invention is further developed in an advantageous manner in that the signal element is designed as a magnetizable track, which is applied on the peripheral surface of the carrier body.
Das erfindungsgemäße Positionselement wird dadurch in vor- teilhafter Weise weitergebildet, dass der Trägerkörper an der Umfangsfläche eine Mulde oder eine Nut aufweist, in welche das Signalelement einlegbar ist. Diese Form der Umfangsfläche eignet sich besonders gut zum Aufnehmen des Signalelements mit einem Basiskörper . The position element according to the invention is further developed in an advantageous manner such that the carrier body has a depression or a groove on the peripheral surface into which the signal element can be inserted. This shape of the peripheral surface is particularly well suited for receiving the signal element with a base body.
Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass die Mulde eine U-Form aufweist . Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass das Signalelement als Magnetelement ausgebildet ist, das ein magnetisches Feld er¬ zeugt, dessen magnetische Wirkung sich im Wesentlichen in axialer Richtung des Trägerköpers ausbreitet. The position element according to the invention is thereby further developed in an advantageous manner that the trough has a U-shape. The positional element according to the invention is further developed in some exemplary prior ¬ a manner that the signal element is designed as a magnetic element, which he attests ¬ a magnetic field whose magnetic effect propagates substantially in the axial direction of the carrier Köpers.
Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass das Signalelement eine im Wesentliche U-förmigen Querschnitt aufweist, wobei das Sig¬ nalelement in der Nut derart ausgerichtet ist, dass die Öffnung der U-Form radial nach außen gerichtet ist. Die magnetische Wirkung kann durch die Formgebung im Bereich zwischen den Flanken des Signalelements besonders stark ausgebildet werden, so dass auf diese Weise die Signalgüte verbesserbar ist. Das erfindungsgemäße Positionselement wird dadurch in vor¬ teilhafter Weise weitergebildet, dass das Signalelements bzw. dessen Seitenwände im Wesentlichen bündig mit der Umfangsfläche des Trägerkörpers schließend ausgebildet sind. The positional element according to the invention is further developed in some exemplary prior ¬ a manner that the signal element has a substantially U-shaped cross section, said Sig ¬ nalelement is aligned in the groove in such a way that the opening of the U shape is directed radially outward. The magnetic effect can be made particularly strong by the shaping in the region between the flanks of the signal element, so that in this way the signal quality can be improved. The positional element according to the invention is further developed in some exemplary prior ¬ a manner that the signal element and whose side walls are formed substantially flush locking with the peripheral surface of the carrier body.
Die Aufgabe wird ferner gelöst gemäß einem zweiten Aspekt der Erfindung mittels eines Sensors nach dem zweiten unabhängigen Anspruch . Der erfindungsgemäße Sensor wird dadurch in vorteilhafter Weise weitergebildet, dass das Sensorelement eine Leiterplatine aufweist, die kreissegmentförmig ausgebildet ist, wobei der Radius derart gewählt ist, dass ein Randbereich der Leiterplatine mit einem gleichförmigen Abstand zum Signalelement positionierbar ist. Insbesondere in Kombination mit einem U-förmig ausgebildeten Signalelement lässt sich das Sensor¬ element besonders vorteilhaft zwischen den Flanken des Sig¬ nalelements und so nah wie möglich am Signalelement positio¬ nieren, um eine erhöhte Signalgüte zu erreichen. Ferner ist diese Anordnung besonders platzsparend. The object is further achieved according to a second aspect of the invention by means of a sensor according to the second independent claim. The sensor according to the invention is further developed in an advantageous manner that the sensor element has a printed circuit board, which is formed circular segment, wherein the radius is selected such that an edge region of the printed circuit board with a uniform distance to the signal element can be positioned. In particular in combination with a U-shaped signal element, the sensor element can ¬ particularly advantageously between the flanks of the Sig ¬ nalelements and as close as possible to the signal element positio ¬ kidney in order to achieve a higher signal quality. Furthermore, this arrangement is particularly space-saving.
Der erfindungsgemäße Sensor wird dadurch in vorteilhafter Weise weitergebildet, dass das Sensorelement zwischen den Stirnflächen des Trägerkörpers benachbart zum Signalelement angeordnet ist. The sensor according to the invention is further developed in an advantageous manner in that the sensor element is arranged between the end faces of the carrier body adjacent to the signal element.
Der erfindungsgemäße Sensor wird dadurch in vorteilhafter Weise weitergebildet, dass der Sensor mehrere Sensorelemente aufweist. The sensor according to the invention is further developed in an advantageous manner in that the sensor has a plurality of sensor elements.
Die Erfindung wird nachfolgend anhand von Figuren und Aus- führungsbeispielen beschrieben. Es zeigen: The invention will be described below with reference to figures and exemplary embodiments. Show it:
Figur 1 eine perspektivische Teilansicht auf ein erstes Ausführungsbeispiel des erfindungsgemäßen Sensors, Figur 2 eine Schnittansicht auf einen Teilquerschnitt des Positionsgeberelements gemäß des ersten Ausführungsbeispiels, FIG. 1 shows a perspective partial view of a first exemplary embodiment of the sensor according to the invention, FIG. 2 shows a sectional view onto a partial cross section of the position-indicating element according to the first embodiment,
Figur 3 eine Schnittansicht auf einen Teilquerschnitt des Positionsgeberelements gemäß eines zweiten Ausführungsbei¬ spiels, und Figure 3 is a sectional view on a partial cross section of the position sensor element according to a second Ausführungsbei ¬ play, and
Figur 4 eine Schnittansicht auf einen Teilquerschnitt des Positionsgeberelements gemäß eines dritten Ausführungsbei- spiels, FIG. 4 shows a sectional view onto a partial cross section of the position-indicating element according to a third exemplary embodiment,
Figur 1 zeigt die wesentlichen Teile des erfindungsgemäßen Sensors, nämlich einen erfindungsgemäßen Positionsgeberelement 10 sowie zwei auf einer Leiterplatine 50 angeordneten Sen¬ sorelemente 51, 52. Die Sensorelemente 51, 52 sind als mag¬ netische Sensorelemente ausgebildet, die die vom Positions¬ geberelement vorgegebenen Signale erfassen. In diesem Aus- führungsbeispiel ist das Positionsgeberelement 10 mit einem Signalelement 11 ausgestatte, das alternierende Magnetpole in einer Ringformation aufweist. Die Erfindung ist jedoch nicht auf diese Form des Signalelements zu beschränken. Weitere Teile des Sensors, wie bspw. ein Gehäuse, Anschlüsse, usw. wurden zur besseren Darstellung der vorgenannten Elemente aus den Figuren ausgeblendet . Figure 1 shows the essential parts of the sensor of the invention, namely, a position sensor element 10 of the invention and two disposed on a printed circuit board 50 Sen ¬ sorelemente 51, 52. The sensor elements 51, 52 are as like ¬-magnetic sensor elements are formed, the ¬ donor element specified by the position signals to capture. In this exemplary embodiment, the position sensor element 10 is equipped with a signal element 11 which has alternating magnetic poles in a ring formation. However, the invention is not limited to this form of the signal element. Other parts of the sensor, such as a housing, connectors, etc. have been hidden from the figures for better representation of the aforementioned elements.
Das Positionsgeberelement 10 weist einen Trägerkörper 11 mit zwei axialen Stirnflächen 12, 13 auf, wobei die zweite Stirnfläche 13 des Trägerkörpers 11 in Figur 1 verdeckt ist. Die Stirnflächen 12 und 13 sind mittels einer Umfangsfläche 14 verbunden, die hier durch das Signalelement 20 größtenteils verdeckt ist. Eine bessere Ansicht auf die Umfangsfläche ist in den Figuren 2 bis 4 dargestellt. Der Trägerkörper 10 ist aus einem metallischen Material gefertigt und ist ringförmig ausgebildet. Auf diese Weise kann der Trägerkörper auf eine Welle oder dgl . angebracht werden. Die Innenumfangsfläche 15 und die Stirnseiten 12, 13 können je nach Bedarf mit einer beliebigen Kontur versehen werden und haben für die Ausführung der Erfindung keinen wesentlichen Einfluss. Wesentlich hingegen ist, dass das Signalelement 20 auf der Außenumfangsfläche bzw. Umfangsfläche 14 des Trägerkörpers 10 angeordnet ist. Die Umfangsfläche ist wie in den Figuren 2 bis 4 zu sehen, aufgrund der Mulde 16 zwischen den Stirnflächen konturiert ausgebildet. Das Signalelement 20 ist innerhalb der Mulde 16 angeordnet oder eingearbeitet. Die Tiefe der Mulde ist dabei so ausgebildet, dass es das Signalelement 20 im We¬ sentlichen vollständig aufnehmen kann und die oberen bzw. radial äußeren Ränder des Signalelements im Wesentlichen bündig zu den radial äußeren Rändern der Umfangsfläche 14 enden. Zwischen dem Signalelement 20 und dem Trägerkörper 11 ergibt sich auf diese Weise eine Kontaktfläche, die im Wesentlichen die gesamte Umfangsfläche 14 abdeckt. Radial nach außen wirkende Kräfte verteilen sich somit gleichmäßig über die Kontaktfläche . The position sensor element 10 has a carrier body 11 with two axial end faces 12, 13, wherein the second end face 13 of the carrier body 11 is concealed in FIG. The end faces 12 and 13 are connected by means of a circumferential surface 14, which is here largely covered by the signal element 20. A better view of the peripheral surface is shown in Figures 2 to 4. The carrier body 10 is made of a metallic material and is annular. In this way, the carrier body on a shaft or the like. be attached. The inner peripheral surface 15 and the end faces 12, 13 can be provided with an arbitrary contour as required and have no significant influence on the execution of the invention. On the other hand, it is essential that the signal element 20 is arranged on the outer peripheral surface or peripheral surface 14 of the carrier body 10. As can be seen in FIGS. 2 to 4, the circumferential surface is contoured due to the depression 16 between the end surfaces. The signal element 20 is disposed or incorporated within the trough 16. The depth of the trough is designed so that it can receive the signal element 20 We ¬ sentlichen complete and the upper or radially outer edges of the signal element is substantially flush with the radially outer edges of the peripheral surface 14 ends. Between the signal element 20 and the carrier body 11 results in this way a contact surface which covers substantially the entire peripheral surface 14. Radially outward forces are distributed evenly over the contact surface.
Das Signalelement 20 weist einen Basiskörper 21 auf, in dem magnetische Partikel eingearbeitet sind. Diese können auf unterschiedliche Art und Weise in den Basiskörper 21 einge- arbeitet sein. Die in Figur 1 gezeigte Ausführung zeigt einen Basiskörper 21 aus einem Elastomer. Der Basiskörper 21 des Signalelements 20 weist einen im Wesentlichen U-förmig geformten Querschnitt auf, wobei die Öffnung der U-Form in radialer Richtung nach außen zeigt. Die Seitenwände bzw. Flanken des Basiskörpers 21 verlaufen in radialer Richtung und umschließen teilweise einen kleinen Bereich in die die Sensorelemente 51, 52 angeordnet werden können. Die zwei Flanken des Sensorelements 20 ermöglichen es ein Magnetfeld aufzubauen, das bereichsweise in axialer Richtung verläuft, was für die Erfassung der Rotation des Trägerkörpers besonders vorteilhaft ist. Wie in Figur 1 und 2 zu sehen, sind die Sensorelemente derart ausgebildet und posi¬ tioniert, so dass sie innerhalb des von den Signalelement 20 umschlossenen Bereichs angeordnet sind. Hierzu ist es vor- teilhaft, dass die Leiterplatine 50 kreissegmentförmig aus¬ gebildet ist und der Radius der Leiterplatine in etwa dem Außenradius des Basiskörpers 21 entspricht, so dass ein Randbereich der Leiterplatine mit einem gleichförmigen Abstand zum Signalelement 21 positionierbar ist. The signal element 20 has a base body 21, in which magnetic particles are incorporated. These can be incorporated into the base body 21 in different ways. The embodiment shown in Figure 1 shows a base body 21 made of an elastomer. The base body 21 of the signal element 20 has a substantially U-shaped cross-section, wherein the opening of the U-shape in the radial direction facing outwards. The side walls or flanks of the base body 21 extend in the radial direction and partially surround a small area into which the sensor elements 51, 52 can be arranged. The two flanks of the sensor element 20 make it possible to build up a magnetic field which extends in regions in the axial direction, which is for detecting the rotation of the Carrier body is particularly advantageous. As can be seen in Figures 1 and 2, the sensor elements are constructed and posi ¬ tioniert so that they are disposed within the space enclosed by the signal element 20 range. For this purpose, it is part way forward, that the printed circuit board is a circular segment 50 is formed from ¬ and the radius of the printed circuit board corresponds approximately to the outer radius of the base body 21 so that an edge portion of the printed circuit board is positioned at a uniform distance from the signal element 21st
Als Alternative zu den in den Figuren 1 und 2 gezeigtem Aus¬ führungsbeispiel ist es denkbar das Signalelement als magne¬ tische Spur oder dgl . direkt auf die Umfangsflache aufzubringen. Ferner ist es möglich die magnetischen Partikel in die Um- fangsflache des Trägerkörpers durch Sintern anzubringen. Im Hinblick auf die thermischen Spannungen ist es vorteilhaft die Spur auf der Umfangsfläche aufzubringen. As an alternative to gezeigtem in Figures 1 and 2 from ¬ leadership example, it is conceivable that signal element as magnetic tables ¬ track or the like. directly on the circumferential surface apply. Furthermore, it is possible to attach the magnetic particles in the peripheral surface of the carrier body by sintering. With regard to the thermal stresses, it is advantageous to apply the track on the peripheral surface.
Die Figuren 3 und 4 zeigen zwei alternative Ausführungsbeispiele. Die Bezugszeichen identischer Elemente wurden für das zweite und dritte Ausführungsbeispiel beibehalten. Figures 3 and 4 show two alternative embodiments. The reference numerals of identical elements have been retained for the second and third embodiments.
In Figur 3 ist das zweite Ausführungsbeispiel gezeigt. Der Trägerkörper 11 weist eine Umfangsfläche 14b auf, die in eine offene Stirnfläche 12b fließend übergeht. Die dieser Stirnfläche 12b gegenüber liegende Stirnfläche 13 weist einen größeren Außenradius als die Stirnfläche 12b auf, so dass der Trägerkörper 11 im Bereich der Umfangsfläche 14b ein halboffenes U-Profil aufweist und das Signalelement 20b daran abstützbar ist. In Figure 3, the second embodiment is shown. The carrier body 11 has a circumferential surface 14b, which merges into an open end surface 12b. The end face 12b opposite this end face 12b has a larger outer radius than the end face 12b, so that the support body 11 has a semi-open U-profile in the area of the circumferential face 14b and the signal element 20b can be supported thereon.
Das Signalelement 20b ist weiterhin im Wesentlichen mit einem U-förmigen Querschnitt ausgebildet, wobei die zur offenen Stirnfläche 12b gewandete Seite des Basiskörpers 21b Signal¬ elements 20b bündig zur offenen Stirnfläche 12b abschließt und auch um eine Abrundung 17 greift, die im Übergang von der Umfangsflache 14b zur offenen Stirnfläche 12b angeordnet ist. Die offene Stirnfläche 12b wird auf diese Weise durch den Basiskörper 21b erweitert, so dass die Flanken des Basiskörpers 21b weiterhin einen Bereich 16 umschließen, in dem die Sensorelemente 51, 52 anordnenbar sind. The signal element 20b is further formed substantially with a U-shaped cross section, wherein the side facing the open end face 12b of the base body 21b signal ¬ elements 20b flush with the open end face 12b and closes also engages around a rounding 17, which is arranged in the transition from the peripheral surface 14b to the open end face 12b. The open end face 12b is widened in this way by the base body 21b, so that the flanks of the base body 21b further enclose a region 16 in which the sensor elements 51, 52 can be arranged.
In Figur 4 ist ein drittes Ausführungsbeispiel gezeigt, dass sich mit dem zweiten Ausführungsbeispiel ähnelt. Jedoch ist das Signalelement 20 nun mit einem Basiskörper 21c versehen, das zur offenen Stirnfläche 12b hin auch offen ist. Der Querschnitt des Basiskörpers gleicht daher einer L-Form. Die Sensorelemente 51, 52 sind benachbart zu der radial verlaufenden Flanke des Ba¬ siskörpers 21c angeordnet. FIG. 4 shows a third exemplary embodiment that is similar to the second exemplary embodiment. However, the signal element 20 is now provided with a base body 21c, which is also open to the open end face 12b. The cross section of the base body therefore resembles an L-shape. The sensor elements 51, 52 are disposed adjacent to the radially extending edge of the Ba ¬ siskörpers 21c.
Das halboffene Profil des Trägerkörpers 11 ermöglicht eine einfachere Anbringung des Signalelements 20b, 20c an den Trägerkörper. Das dritte Ausführungsbeispiel bietet zudem den Vorteil, dass die Positionierung der Sensorelemente 51, 52 benachbart zu Signalelement 20c auch unter engen Bauraumbedigungen einfacher möglich ist. The semi-open profile of the carrier body 11 allows a simpler attachment of the signal element 20b, 20c to the carrier body. The third embodiment also has the advantage that the positioning of the sensor elements 51, 52 adjacent to the signal element 20c is easier, even under tight space conditions.

Claims

Patentansprüche claims
1. Positionsgeberelement (10) für einen Sensor (1) zum Er¬ fassen einer Drehung aufweisend 1. position sensor element (10) for a sensor (1) for He ¬ capture a rotation having
- einen Trägerkörper (11) mit zwei axialen Stirnflächen (12, 12b, 12c, 13) und eine die zwei Stirnflächen (12, 12b, 12c, 13) verbindende Umfangsfläche (14, 14b), a carrier body (11) with two axial end faces (12, 12b, 12c, 13) and a peripheral face (14, 14b) connecting the two end faces (12, 12b, 12c, 13),
- mindestens ein Signalelement (20, 20b, 20c), das in mehreren magnetisch voneinander unterschiedlichen Abschnitten codierbar ist, wobei die Abschnitte von einem Sensorelement (51, 52) erfassbar sind, um eine Drehbewegung zu messen, und wobei das Signalelement (20, 20b, 20c) an dem Trägerkörper (11) angebracht ist ,  - At least one signal element (20, 20 b, 20 c) which is codable in a plurality of magnetically different sections, wherein the portions of a sensor element (51, 52) are detectable to measure a rotational movement, and wherein the signal element (20, 20 b , 20c) is attached to the carrier body (11),
dadurch gekennzeichnet, dass das Signalelement (20, 20b, 20c) an der Umfangsfläche (14, 14b) des Trägerkörpers (11) angeordnet ist . characterized in that the signal element (20, 20b, 20c) on the peripheral surface (14, 14b) of the carrier body (11) is arranged.
2. Element (10) nach einem dem vorstehenden Anspruch, dadurch gekennzeichnet, dass das Signalelement einen Basiskörper2. Element (10) according to one of the preceding claim, characterized in that the signal element is a base body
(21, 21b, 21c) und darin gebundene magnetische Partikel aufweist . (21, 21b, 21c) and magnetic particles bound therein.
3. Element (10) nach Anspruch 2, dadurch gekennzeichnet, dass das Material des Basiskörpers (21, 21b, 21c) einen Elastomer enthält und die magnetischen Partikel mit dem Elastomer verbindbare Magnetpartikel sind. 3. element (10) according to claim 2, characterized in that the material of the base body (21, 21b, 21c) contains an elastomer and the magnetic particles are connected to the elastomer magnetic particles.
4. Element (10) nach Anspruch 3, dadurch gekennzeichnet, dass die magnetischen Partikel in den Basiskörper (21, 21b, 21c) gesinterte Partikel sind. 4. element (10) according to claim 3, characterized in that the magnetic particles in the base body (21, 21 b, 21 c) are sintered particles.
5. Element (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Trägerkörper (11) der Basiskörper des Signalements ist. 5. Element (10) according to any one of the preceding claims, characterized in that the carrier body (11) is the base body of the signal element.
6. Element (10) nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass das Signalelement als eine magne- tisierbare Spur ausgebildet ist, die auf der Umfangsflache (14, 14b) des Trägerkörpers (11) aufgetragen ist. 6. element (10) according to the preceding claim, characterized in that the signal element is designed as a magnetizable track, which is applied to the peripheral surface (14, 14b) of the carrier body (11).
7. Element (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Trägerkörper (11) an der Um- fangsfläche (14, 14b) eine Mulde oder eine Nut aufweist, in welche das Signalelement einlegbar ist. 7. Element (10) according to any one of the preceding claims, characterized in that the carrier body (11) on the peripheral surface (14, 14b) has a recess or a groove into which the signal element can be inserted.
8. Element (10) nach Anspruch 7, dadurch gekennzeichnet, dass die Mulde eine U-Form aufweist. 8. element (10) according to claim 7, characterized in that the trough has a U-shape.
9. Element (10) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Signalelement (20, 20b, 20c) als9. element (10) according to any one of the preceding claims, characterized in that the signal element (20, 20 b, 20 c) as
Magnetelement ausgebildet ist, das ein magnetisches Feld erzeugt, dessen magnetische Wirkung sich im Wesentlichen in axialer Richtung (A) des Trägerkörpers ausbreitet. Magnetic element is formed which generates a magnetic field whose magnetic effect propagates substantially in the axial direction (A) of the carrier body.
10. Element (10) nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass das Signalelement (20, 20b, 20c), eine im Wesentliche U-förmigen Querschnitt aufweist, wobei das Signalelement (20, 20b, 20c), in der Nut derart ausgerichtet ist, dass die Öffnung der U-Form radial nach außen gerichtet ist. 10. element (10) according to the preceding claim, characterized in that the signal element (20, 20 b, 20 c), having a substantially U-shaped cross-section, wherein the signal element (20, 20 b, 20 c), aligned in the groove is that the opening of the U-shape is directed radially outward.
11. Element (10) nach einem Ansprüche 7 bis 10, dadurch gekennzeichnet, dass das Signalelement (20, 20b, 20c), im Wesentlichen bündig mit den Stirnflächen (12, 12b, 13) des Trägerkörpers (11) schließend ausgebildet sind. 11. Element (10) according to any one of claims 7 to 10, characterized in that the signal element (20, 20b, 20c), substantially flush with the end faces (12, 12b, 13) of the carrier body (11) are formed closing.
12. Sensor (1) mit einem Positionsgeberelement (10) nach einem der Ansprüche 1 bis 11 und mindestens einem Sen- sorelement (51, 52) zum Erfassen der vom Positionsge¬ berelement (10) vorgegebenen Signale. 12. Sensor (1) with a position transmitter element (10) according to one of claims 1 to 11 and at least one sensor sorelement (51, 52) for detecting the predetermined Positionsge from ¬ berelement (10) signals.
13. Sensor (1) nach Anspruch 12, dadurch gekennzeichnet, dass das Sensorelement (51, 52) eine Leiterplatine (50) aufweist, die kreissegmentförmig ausgebildet ist, wobei der Radius derart gewählt ist, dass ein Randbereich der Leiterplatine (50) mit einem gleichförmigen Abstand zum Signalelement (20, 20b, 20c) positionierbar ist. 13. Sensor (1) according to claim 12, characterized in that the sensor element (51, 52) has a printed circuit board (50) which is formed in a circular segment, wherein the radius is selected such that an edge region of the printed circuit board (50) with a uniform distance to the signal element (20, 20b, 20c) can be positioned.
14. Sensor (1) nach einem der Ansprüche 12 bis 13, dadurch gekennzeichnet, dass das Sensorelement (51, 52) zwischen der Stirnflächen (12, 12b, 13) des Trägerkörpers (11) benachbart zum Signalelement (20, 20b, 20c) angeordnet ist. 14. Sensor (1) according to one of claims 12 to 13, characterized in that the sensor element (51, 52) between the end faces (12, 12b, 13) of the carrier body (11) adjacent to the signal element (20, 20b, 20c) is arranged.
15. Sensor (1) nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass der Sensor (1) mehrere Sensorelemente (51, 52) aufweist. 15. Sensor (1) according to any one of claims 12 to 14, characterized in that the sensor (1) has a plurality of sensor elements (51, 52).
PCT/EP2015/065799 2014-07-10 2015-07-10 Magnetic encoder on shaft circumference WO2016005549A1 (en)

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