DE4331969A1 - Inductive speed sensor - Google Patents
Inductive speed sensorInfo
- Publication number
- DE4331969A1 DE4331969A1 DE19934331969 DE4331969A DE4331969A1 DE 4331969 A1 DE4331969 A1 DE 4331969A1 DE 19934331969 DE19934331969 DE 19934331969 DE 4331969 A DE4331969 A DE 4331969A DE 4331969 A1 DE4331969 A1 DE 4331969A1
- Authority
- DE
- Germany
- Prior art keywords
- speed sensor
- sensor according
- inductive speed
- shaped
- housing section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
-
- 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
- G01D5/20—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 by varying inductance, e.g. by a movable armature
- G01D5/2006—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 by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
- G01D5/2013—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 by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
Abstract
Description
Die vorliegende Erfindung geht von einem gemäß dem Oberbegriff des Hauptanspruches konzipierten induktiven Geschwindigkeitssensor aus.The present invention is based on one according to the preamble of the main claim designed inductive Speed sensor off.
Derartige elektrische Sensoreinrichtungen sind dafür vorgesehen, um bei sich bewegenden Maschinenteilen - wie z. B. Zahnrädern - deren Geschwindigkeit bzw. Drehzahl festzustellen und über eine angeschlossene elektrische Leitung ein entsprechendes Signal einer Auswert- bzw. Steuereinheit zuzuführen. Ein solcher induktiver Geschwindigkeitssensor kann z. B. Teil eines Antiblockiersystems für Kraftfahrzeuge sein.Such electrical sensor devices are for this provided for moving machine parts - such as. B. Gears - determine their speed or speed and via a connected electrical line corresponding signal from an evaluation or control unit feed. Such an inductive speed sensor can e.g. B. be part of an anti-lock braking system for motor vehicles.
Ein dem Oberbegriff des Hauptanspruches entsprechender induktiver Geschwindigkeitssensor ist durch die DE 39 02 218 A1 bekanntgeworden. Bei dieser Sensoreinrichtung ist jedoch neben dem die Dauermagnet/Polkern-Anordnung aufnehmenden Formkörper noch ein weiterer den hinteren Gehäuseabschnitt bildender Formkörper erforderlich, an dem die Dauermagnet/Polkern-Anordnung über ein Federelement gegen den von einem becherförmigen Gehäuseteil gebildeten Boden des vorderen Gehäuseabschnitts eingespannt gehalten ist. Eine solche Ausführungsform weist aber einen relativ komplexen und damit ein recht beachtlichen Fertigungsaufwand erfordernden Aufbau auf.A corresponding to the preamble of the main claim inductive speed sensor is through the DE 39 02 218 A1 has become known. With this sensor device is next to that the permanent magnet / pole core arrangement receiving molding still another the rear Shaped body forming section required on which the Permanent magnet / pole core arrangement against the spring element formed by a cup-shaped housing part of the bottom front housing section is held clamped. A such embodiment has a relatively complex and thus requiring quite a considerable manufacturing effort Building on.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde einen induktiven Geschwindigkeitssensor zu schaffen, der sich gegenüber den bekannten Ausführungsformen durch einen optimale Funktionseigenschaften gewährleistenden, nur einen relativ geringen Aufwand erfordernden Aufbau auszeichnet.The present invention is based on the object to create inductive speed sensor that is compared to the known embodiments by an optimal Ensuring functional properties, only a relative distinguishes structure requiring little effort.
Erfindungsgemäß wird die Aufgabe bei einem induktiven Geschwindigkeitssensor der im Oberbegriff des Hauptanspruches vorausgesetzten Art durch die im kennzeichnenden Teil des Hauptanspruches angegebenen Merkmale gelöst.According to the invention, the task with an inductive Speed sensor in the preamble of the main claim assumed type by the in the characterizing part of the Main claim specified features solved.
Vorteilhaft für eine derartige Ausgestaltung ist, daß dabei eine an die Fertigung keine hohen Ansprüche stellende und trotzdem exakt funktionierende Magnet/Polkern-Anordnung Verwendung findet.It is advantageous for such an embodiment that one that does not place high demands on production and nevertheless exactly functioning magnet / pole core arrangement Is used.
Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Gegenstandes sind in den Unteransprüchen angegeben und werden anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Dabei zeigenFurther advantageous embodiments of the invention Subject matter are specified in the subclaims and are based on one shown in the drawing Embodiment explained in more detail. Show
Fig. 1 eine teilweise aufgebrochen dargestellte Ansicht des induktiven Geschwindigkeitssensors, Fig. 1 is a broken view of the inductive speed sensor, shown partly
Fig. 2 den Geschwindigkeitssensor nach Fig. 1 im Schnitt gemäß Linie A-B der Fig. 1. Fig. 2 shows the speed sensor 1 according to Fig. In section according to line AB of FIG. 1.
Wie aus der Zeichnung hervorgeht, besteht ein insbesondere zur Erfassung der Drehzahl eines drehbaren Maschinenteiles vorgesehener Geschwindigkeitssensor im wesentlichen aus einer in einem Gehäuse G angeordneten induktiven Meßanordnung. Dabei ist die Meßanordnung in dem vorderen, z. B. einem Zahnrad zugeordneten Gehäuseabschnitt G* vorhanden, während der über eine Übergangszone mit den vorderen Gehäuseabschnitt verbundene hintere Gehäuseabschnitt G** für den Anschluß einer der induktiven Meßanordnung zugeordneten elektrischen Leitung vorgesehen ist.As can be seen from the drawing, there is in particular for Detection of the speed of a rotatable machine part provided speed sensor essentially from a arranged in a housing G inductive measuring arrangement. Here is the measuring arrangement in the front, for. B. a gear assigned housing section G * available during the over a transition zone with the front housing section connected rear housing section G ** for connecting a the electrical line associated with the inductive measuring arrangement is provided.
Das Gehäuse G besteht aus einem im Spritzgußverfahren aus Kunststoff hergestellten Formkörper 1, an dessen dem vorderen Gehäuseabschnitt G* zugehörigen Endbereich 1* eine elektrische Spule angeordnet und eine zentral liegende, als Sackloch ausgeführte Ausnehmung 1′ vorhanden ist. In dieser Ausnehmung 1′ ist eine unter der Wirkung eines als Schraubendruckfeder ausgebildeten Federelementes 3 stehende Magnet/Polkern-Anordnung 4, 5 gehalten und zwar stützt sich das eine als Kopfstück 5* anzusehende Ende des Polkerns 5 über einen daran angeformten stegartigen Ansatz 5** an dem Boden 7* eines den Endbereich 1* des Formkörpers 1 umgebenden, aus ferromagnetischem Material - wie z. B. Nickeleisen - bestehenden becherförmigen Gehäuseteils 7 ab. Damit der Polkern 5 lagedefiniert in der Ausnehmung 1′ gehalten wird, ist derselbe mit einer seitlichen Abflachung versehen, die einer entsprechend ausgebildeten Zone der Ausnehmung 1′ zugeordnet ist.The housing G consists of an injection molded plastic body 1 , at the front housing section G * associated end portion 1 * an electrical coil is arranged and a centrally located, designed as a blind hole recess 1 'is available. In this recess 1 'a magnet / pole core arrangement 4 , 5 is held under the action of a spring element 3 designed as a helical compression spring, namely that the end of the pole core 5 , which is to be regarded as a head piece 5 *, is supported by a web-like attachment 5 ** formed thereon. on the bottom 7 * of the end region 1 * of the molded body 1 , made of ferromagnetic material - such as. B. nickel iron - existing cup-shaped housing part 7 from. So that the pole core 5 is held in a defined position in the recess 1 ', the same is provided with a lateral flattening which is assigned to a correspondingly formed zone of the recess 1 '.
Das becherförmige Gehäuseteil 7 ist auf dem einen Endbereich 1* des Formkörpers 1 durch Zwischenschaltung eines in einem umlaufenden rinnenförmigen Kanal 8 des Formkörpers 1 vorhandenen Dichtrings 9 dicht angeordnet und mittels eines an seinem offenen Ende durch Umbördelung gebildeten, in eine am Formkörper 1 vorhandene umlaufende Nut 6 eingreifenden Kragens 7** gehalten. In die umlaufende Nut 6 kann wie in Fig. 1 angedeutet, ein weiterer Dichtring 13 eingesetzt sein, der als Dichtmittel in Zusammenhang mit einem den Geschwindigkeitssensor aufnehmenden Maschinengehäuses vorgesehen ist.The cup-shaped housing part 7 is arranged on the one end region 1 * of the molded body 1 by interposing a sealing ring 9 present in a circumferential channel-shaped channel 8 of the molded body 1 and by means of a circumferential groove formed at its open end by flanging into an existing circumferential groove on the molded body 1 6 engaging collar 7 ** held. In the circumferential groove 6 , as indicated in FIG. 1, a further sealing ring 13 can be inserted, which is provided as a sealant in connection with a machine housing that accommodates the speed sensor.
Der hintere gegenüber dem vorderen Gehäuseabschnitt G* um ca. 90° abgewinkelte Gehäuseabschnitt G** wird von dem anderen Endbereich 1** des Formkörpers 1 gebildet. Dieser Endbereich ist als doppelpoliger elektrischer Stecker 1a ausgebildet, wobei die beiden im Formkörper 1 befindlichen, aus gestanzten und gebogenen Blechteilen gebildeten elektrischen Leiter 10a, 10b an ihren einen Enden als Steckkontaktelemente 10a*, 10b* ausgeführt und an ihren anderen Enden 10a**, 10b** unter Zuhilfenahme der Wickelanschlußtechnik mit den beiden Spulenanschlüssen verbunden sind.The rear housing section G ** angled by approximately 90 ° with respect to the front housing section G * is formed by the other end region 1 ** of the molded body 1 . This end region is designed as a double-pole electrical connector 1 a, the two electrical conductors 10 a, 10 b located in the molded body 1 , formed from stamped and bent sheet metal parts, being designed at one end as plug contact elements 10 a *, 10 b * and at their other ends Ends 10 a **, 10 b ** are connected to the two coil connections with the aid of the winding connection technology.
Um das Gehäuse z. B. an einem das sich bewegende Maschinenteil umgebenden Maschinengehäuse zu befestigen, ist an demselben ein Anschlagflansch 11 angeformt, der mit einem Befestigungsauge 12 versehen ist, über welches das Gehäuse G z. B. mittels Schraube am Maschinengehäuse zu befestigen ist.To the housing z. B. to attach to a machine housing surrounding the moving machine part, a stop flange 11 is formed on the same, which is provided with a fastening eye 12 , via which the housing G z. B. is to be fastened to the machine housing by means of a screw.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934331969 DE4331969C2 (en) | 1993-09-21 | 1993-09-21 | Inductive speed sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934331969 DE4331969C2 (en) | 1993-09-21 | 1993-09-21 | Inductive speed sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4331969A1 true DE4331969A1 (en) | 1995-03-23 |
DE4331969C2 DE4331969C2 (en) | 1998-10-29 |
Family
ID=6498148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19934331969 Expired - Fee Related DE4331969C2 (en) | 1993-09-21 | 1993-09-21 | Inductive speed sensor |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4331969C2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19644379A1 (en) * | 1996-10-25 | 1998-04-30 | Wabco Gmbh | Device for fixing the position of a coil carrier in a cup-shaped housing part |
DE19724483A1 (en) * | 1997-06-10 | 1998-12-17 | Beru Werk Ruprecht Gmbh Co A | Inductive speed sensor |
US11560142B2 (en) | 2018-01-12 | 2023-01-24 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Speed sensor including insulating inner and outer recesses |
DE102022000344A1 (en) | 2022-01-28 | 2023-08-03 | Baumer Germany Gmbh & Co. Kg | Generator for a rotary encoder and a rotary encoder with such a generator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2578018B1 (en) * | 1985-02-26 | 1990-04-27 | Electricfil | IMPROVEMENTS ON ELECTROMAGNETIC SENSORS |
DE3628585C2 (en) * | 1986-08-22 | 1998-04-09 | Wabco Gmbh | Pulse speed encoder |
DE3841654A1 (en) * | 1988-12-10 | 1990-06-13 | Bosch Gmbh Robert | Speed sensor for installation in a wheel bearing |
DE3902218A1 (en) * | 1989-01-26 | 1990-08-02 | Wabco Westinghouse Fahrzeug | DEVICE FOR FIXING THE POSITION OF A REEL CARRIER IN A POT SHAPED HOUSING PART |
JP2876090B2 (en) * | 1990-11-22 | 1999-03-31 | 愛三工業株式会社 | Electromagnetic induction type rotation detector |
JPH05209889A (en) * | 1992-01-30 | 1993-08-20 | Sumitomo Electric Ind Ltd | Wheel speed sensor |
-
1993
- 1993-09-21 DE DE19934331969 patent/DE4331969C2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19644379A1 (en) * | 1996-10-25 | 1998-04-30 | Wabco Gmbh | Device for fixing the position of a coil carrier in a cup-shaped housing part |
US5896029A (en) * | 1996-10-25 | 1999-04-20 | Wabco Gmbh | Arrangement for fixing the position of a coil carrier in a housing |
DE19724483A1 (en) * | 1997-06-10 | 1998-12-17 | Beru Werk Ruprecht Gmbh Co A | Inductive speed sensor |
US11560142B2 (en) | 2018-01-12 | 2023-01-24 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Speed sensor including insulating inner and outer recesses |
DE102022000344A1 (en) | 2022-01-28 | 2023-08-03 | Baumer Germany Gmbh & Co. Kg | Generator for a rotary encoder and a rotary encoder with such a generator |
Also Published As
Publication number | Publication date |
---|---|
DE4331969C2 (en) | 1998-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licenses declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |