DE4231033A1 - Passive sensor for measuring rotation rate of vehicle wheel bearing - comprises winding with low number of turns coupled to step=up voltage transformer - Google Patents
Passive sensor for measuring rotation rate of vehicle wheel bearing - comprises winding with low number of turns coupled to step=up voltage transformerInfo
- Publication number
- DE4231033A1 DE4231033A1 DE4231033A DE4231033A DE4231033A1 DE 4231033 A1 DE4231033 A1 DE 4231033A1 DE 4231033 A DE4231033 A DE 4231033A DE 4231033 A DE4231033 A DE 4231033A DE 4231033 A1 DE4231033 A1 DE 4231033A1
- Authority
- DE
- Germany
- Prior art keywords
- sensor
- voltage transformer
- vehicle wheel
- transformer
- wheel bearing
- 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.)
- Ceased
Links
- 238000004804 winding Methods 0.000 title claims abstract description 12
- 229920000136 polysorbate Polymers 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
Classifications
-
- 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
- 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
-
- 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
- F16C19/185—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 with two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Anwendungsbereich der vorliegenden Erfindung sind Meß vorrichtungen für die Drehgeschwindigkeit zwischen zwei in relativer Drehung stehenden Teilen wie den Lagern eines Fahrzeugrades. Gegenstand der Erfindung ist insbesondere ein Passivfühler mit niedriggängiger Wicklung.The scope of the present invention is measurement devices for the speed of rotation between two in relative rotation of standing parts such as bearings Vehicle wheel. The subject of the invention is in particular a passive sensor with low winding.
Die unter den Bezeichnungen ABV, ASR, RDWS geläufigen modernen Überwachungskreise sind im allgemeinen mit Basis komponenten wie Tonrad, Meßfühler, Bordcomputer und öldy namischem Gehäuse ausgestattet.Those familiar under the names ABV, ASR, RDWS modern surveillance circles are generally based components such as the tone wheel, sensor, on-board computer and öldy Named housing equipped.
Bei dem Tonrad handelt es sich gewöhnlich um einen auf dem zu überwachenden sich drehenden Teil montierten Zahn ring, während der Fühler am festen Teil des Rahmens an gebracht wird und von einer bestimmten Entfernung aus dem Zahnbereich des Tonrades zugewandt ist.The tone wheel is usually one on the rotating part to be assembled ring while the sensor is attached to the fixed part of the frame brought and from a certain distance from the Tooth area of the tone wheel is facing.
Die vom Fühler abgegebenen Elektroimpulse werden an den Bordcomputer geleitet, der beim ABV-System die Geschwin digkeitsdifferenzen der Räder ermittelt.The electrical impulses emitted by the sensor are sent to the On-board computer directed, the speed in the ABV system difference in the wheels determined.
Ein im Lager eingebauter Fühler besteht gewöhnlich aus einer Spule, die in einem Flußkonzentrator mit speziellen Kanten enthalten ist, mittels derer er direkt auf das La ger aufgesteckt wird.A sensor installed in the bearing usually consists of a coil in a flux concentrator with special Edges is included, by means of which it directly on the La ger is plugged on.
Die Entwicklung eines im Lager integrierten Passiv fühlers für Einrichtungen vom Typ ABV führte zur Herstel lung einer Spule mit erhöhter Windungszahl und einem gro ßen Wicklungsquerschnitt (6 bis 20 qmm). Dazu kommt der eventuelle Raumbedarf durch den Querschnitt der Spule, die normalerweise die Windungen enthält, sowie der Raumbedarf des Tonrads.The development of a passive integrated in the warehouse feels for devices of the type ABV led to the manufacture a coil with an increased number of turns and a large outer winding cross-section (6 to 20 sqmm). Add to that the possible space requirement through the cross section of the coil, the normally contains the turns, as well as the space requirement the tone wheel.
Die Hersteller bemühen sich um einen minimalen Raumbe darf in Axialrichtung des Lagers; Hauptziel der vorliegen den Erfindung ist daher die Vorstellung eines niedrig gängigen Fühlers, der in der Lage ist, den Raumbedarf in Axialrichtung auf ein Minimum zu reduzieren.The manufacturers strive for a minimal space may be in the axial direction of the bearing; The main aim of the present the invention is therefore a low idea common sensor that is able to measure the space required Reduce axial direction to a minimum.
Zu diesem und zu anderen Zwecken, die nachfolgend ge nauer erläutert werden, wird erfindungsgemäß die Herstel lung einer Einrichtung zur Messung der Drehgeschwindigkeit zwischen zwei in relativer Drehung zueinander stehenden Elementen wie den Ringen eines Fahrzeugradlagers vorge schlagen, das seiner Art gemäß ein einteilig mit dem Dreh ring des Lagers gebautes Tonrad und einen vom festen Ring des Lagers getragenen Fühler bzw. Meßspule beinhaltet. Dieser Fühler ist durch seine niedriggängige Wicklung in Verbindung mit einem Umspanner oder Spannungsübertrager bzw. -erhöher gekennzeichnet.For this and other purposes, the following ge are explained in more detail, the manufacturer according to the invention a device for measuring the rotational speed between two in relative rotation to each other Elements such as the rings of a vehicle wheel bearing are featured beat, which is a one-piece with the twist according to its nature ring of the bearing built tone wheel and one of the fixed ring bearing sensor or measuring coil carried in the bearing. This sensor is in due to its low winding Connection with a transformer or voltage transformer marked or increased.
Die der Erfindung entsprechende Einrichtung wird nun in Form eines Beispiels in einer bevorzugten, jedoch nicht ausschließlichen Herstellungsform und unter Bezugnahme auf die anliegenden Zeichnungen beschrieben, d. h.:The device according to the invention is now in Form an example in a preferred, but not exclusive manufacturing form and with reference to the attached drawings are described, i. H.:
Abb. 1 zeigt den Teilschnitt eines Wälzlagers, auf dem eine Meßvorrichtung für die Drehgeschwindigkeit mit dem erfindungsgemäßen niedriggängigen Fühler mon tiert ist; Fig. 1 shows the partial section of a rolling bearing on which a measuring device for the rotational speed is installed with the low-speed sensor according to the invention;
Abb. 2 beschreibt schematisch die Bestandteile des Fühlers entsprechend der Erfindung; Fig. 2 schematically describes the components of the sensor according to the invention;
Abb. 3 zeigt eine Spannungskurve über die Geschwindigkeit, wie sie für den betreffenden Fühler kennzeichnend ist. Fig. 3 shows a voltage curve over speed as it is characteristic of the sensor in question.
Abb. 1 zeigt ein aus einem äußeren drehenden Ring 10 und einem inneren festen Ring 11 bestehendes Wälzlager mit zwei zwischen den Ringen 10 und 11 gelagerten Kugelkränzen 12. Die Meßvorrichtung der Geschwindigkeit der relativen Drehung zwischen den Ringen 10 und 11 besteht im wesentli chen aus einem Tonrad 13, das von einem auf dem äußeren Drehring 10 befestigten Schirm 14 getragen wird, sowie aus einem Fühler oder Spule 15, der in einem einteilig mit dem inneren festen Ring 11 gebauten und dem Tonrad 13 zuge wandten Flußkonzentrator 16 enthalten ist. Fig. 1 shows a rolling bearing consisting of an outer rotating ring 10 and an inner fixed ring 11 with two ball rings 12 mounted between the rings 10 and 11 . The measuring device of the speed of relative rotation between the rings 10 and 11 consists in wesentli Chen from a tone wheel 13 , which is supported by a screen 14 attached to the outer rotating ring 10 , and a sensor or coil 15 , which is in one piece with the built inner fixed ring 11 and the tone wheel 13 facing flux concentrator 16 is included.
Der Erfindung entsprechend besteht der Fühler 15 aus ei ner niedriggängigen Wicklung, deren Ende 17 an einen Span nungsübertrager oder -erhöher (Abb. 2) angeschlossen wird, welcher aus einem Primärkreis 19, verbunden mit einem Se kundärkreis 20 besteht.According to the invention, the sensor 15 consists of egg ner low-speed winding, the end 17 is connected to a voltage transformer or riser ( Fig. 2), which consists of a primary circuit 19 , connected to a secondary circuit 20 Se.
Der so hergestellte Fühler arbeitet "unter Strom", d. h. bei extrem niedriger Spannung, anstatt "unter Spannung" wie die herkömmlichen Fühler. Der Umwandler bringt das Si gnal somit auf das für den Betrieb des Steuergehäuses not wendige Spannungsniveau, für das die Messung der vom Fühler 15 ausgehenden Signale mit Niederspannung bei Feh len des Übertragers kritisch wäre.The sensor thus produced works "under current", ie at extremely low voltage, instead of "under voltage" as the conventional sensors. The converter thus brings the signal to the voltage level necessary for the operation of the control housing, for which the measurement of the signals from the sensor 15 with low voltage would be critical in the absence of the transformer.
In einer ersten Herstellungsform wird der Umwandler oder Übertrager günstig im Inneren eines (nicht dargestellten) Verbinders positioniert, welcher den Fühler an die Verka belung des elektronischen Steuergehäuses anschließt.In a first production form, the converter or Transmitter cheap inside a (not shown) Positioned connector, which connects the sensor to the Verka connection of the electronic control housing.
Eine optimale Lösung sieht den Gebrauch einer 8-gängigen Wicklung mit Draht von 0,5 mm Durchmesser vor, was einen Wicklungs-Gesamtquerschnitt von 2 qmm beinhaltet. Die Ver wendung von Draht mit 0,5 mm Durchmesser ermöglicht die Herstellung von vorgefertigten Wicklungen ohne Hilfsspule, was eine zusätzliche Raumersparnis mit sich bringt. Der notwendige Umwandler hat einen geringen Raumbedarf (in diesem Fall 4 bis 5 qcm), so daß er leicht im Inneren des Verbinders eingebaut werden kann.An optimal solution sees the use of an 8-course Winding with wire of 0.5 mm diameter before what a Total winding cross section of 2 qmm included. The Ver The use of wire with a diameter of 0.5 mm enables Production of prefabricated windings without auxiliary coil, which means additional space savings. The necessary converter has a small space requirement (in this case 4 to 5 qcm), so that it is easily inside the Connector can be installed.
Abb. 3 zeigt eine auf einen Fühler und einen Übertrager mit folgenden technischen Merkmalen bezogene Ansprechkur ve: Fig. 3 shows a response curve relating to a sensor and a transmitter with the following technical features:
- - Fühler: 8 Windungen; R = 0,1 ohm; L = 18 microhenry;- Sensor: 8 turns; R = 0.1 ohm; L = 18 microhenry;
- - Übertrager (Primärwicklung): R = 0,45 ohm; L = 3 millihenry;- transformer (primary winding): R = 0.45 ohm; L = 3 millihenry;
- - Übertrager (Sekundärwicklung): R = 750 ohm; L = 25 henry; - transformer (secondary winding): R = 750 ohms; L = 25 henry;
- - Übersetzungsverhältnis: 60.- Gear ratio: 60.
Die Abszisse zeigt die Drehgeschwindigkeit, die Ordinate die daraus folgende Spannung am Ausgang des Übertragers (durchgehende Linie) und am Ausgang des Fühlers (gestri chelte Linie).The abscissa shows the speed of rotation, the ordinate the resulting voltage at the output of the transformer (solid line) and at the sensor output (streaked smiled line).
Die folgende auf das Beispiel von Abb. 3 bezogene Tabel le gibt in der ersten Spalte die Fahrzeuggeschwindigkeit V an, in der zweiten Spalte die Drehgeschwindigkeit des La gers, in der dritten Spalte die Impulsfrequenz, in der vierten Spalte die Ausgangsspannung am Fühler, in der fünften Spalte die Ausgangsspannung am Übertrager.The following table, based on the example of Fig. 3, indicates the vehicle speed V in the first column, the rotational speed of the bearing in the second column, the pulse frequency in the third column, and the output voltage at the sensor in the fourth column fifth column the output voltage at the transformer.
Bei einer anderen nicht dargestellten Herstellungsform kann der Übertrager in unmittelbarer Nähe des Fühlers 15 anstatt im Inneren des Verbinders angebracht werden; hier durch werden die zur Länge des Drahtes 17 proportionalen Leistungsverluste verringert. Dagegen muß bei dieser Va riante der Übertrager in einer Umgebung arbeiten, in der er durch die Nähe einer Wärmequelle wie der Bremsscheibe höheren Temperaturen ausgesetzt ist.In another form of manufacture, not shown, the transmitter can be installed in the immediate vicinity of the sensor 15 instead of inside the connector; through this the power losses proportional to the length of the wire 17 are reduced. On the other hand, in this variant, the transformer must work in an environment in which it is exposed to higher temperatures due to the proximity of a heat source such as the brake disc.
Der der Erfindung entsprechende Fühler bietet ferner die Möglichkeit zur Herstellung der Windungen mit einer ein- oder mehrschichtigten gedruckten Schaltung zur sofortigen Anwendung.The sensor according to the invention also offers the Possibility of producing the turns with a single or multilayer printed circuit for instant Application.
In jedem Fall löst der niedriggängige Fühler auf wirksa me und wirtschaftliche Weise das Problem der Forderung nach minimalem Raumbedarf in Axialrichtung des Lagers.In any case, the low-speed sensor resolves to effective me and economic way the problem of the claim after minimal space requirement in the axial direction of the bearing.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO910725A IT1250840B (en) | 1991-09-26 | 1991-09-26 | PASSIVE SENSOR WITH LOW-SPOOL WINDING. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4231033A1 true DE4231033A1 (en) | 1993-04-08 |
Family
ID=11409604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4231033A Ceased DE4231033A1 (en) | 1991-09-26 | 1992-09-17 | Passive sensor for measuring rotation rate of vehicle wheel bearing - comprises winding with low number of turns coupled to step=up voltage transformer |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE4231033A1 (en) |
| IT (1) | IT1250840B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5603575A (en) * | 1994-10-20 | 1997-02-18 | Nsk Ltd. | Rolling bearing unit with rotating speed detector |
| US5893648A (en) * | 1996-07-30 | 1999-04-13 | The Timken Company | Combined bearing and sensor assembly |
| EP0930505A1 (en) * | 1998-01-16 | 1999-07-21 | SKF INDUSTRIE S.p.A. | A rolling bearing unit with a rotating speed measuring device |
| US5967669A (en) * | 1996-10-11 | 1999-10-19 | Nsk Ltd. | Rolling bearing unit with rotational speed sensor |
| US6109794A (en) * | 1997-07-17 | 2000-08-29 | Skf Industrie S.P.A. | Rolling contact bearing provided with a seal and an electrostatic current discharge device |
| US6153514A (en) * | 1999-01-04 | 2000-11-28 | Advanced Micro Devices, Inc. | Self-aligned dual damascene arrangement for metal interconnection with low k dielectric constant materials and nitride middle etch stop layer |
| US6190051B1 (en) | 1998-02-24 | 2001-02-20 | Skf Industrie S.P.A. | Roller contact bearing with a sealing device and a device for rotation speed |
| CN104421343A (en) * | 2013-09-04 | 2015-03-18 | Skf公司 | Sealing and signaling device, in particular for a rolling bearing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0438624A1 (en) * | 1989-12-15 | 1991-07-31 | Skf Industrie S.P.A. | Device enabling the revolutionary speed to be measured between the races of a rolling bearing for the support of a vehicle wheel |
-
1991
- 1991-09-26 IT ITTO910725A patent/IT1250840B/en active IP Right Grant
-
1992
- 1992-09-17 DE DE4231033A patent/DE4231033A1/en not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0438624A1 (en) * | 1989-12-15 | 1991-07-31 | Skf Industrie S.P.A. | Device enabling the revolutionary speed to be measured between the races of a rolling bearing for the support of a vehicle wheel |
Non-Patent Citations (2)
| Title |
|---|
| JP 58-151562 A. In: Patents Abstracts of Japan P-241 December 7, 1983, Vol. 7/No. 274 * |
| JP 59-116552 A. In: Patents Abstracts of Japan P-311 November 7, 1984, Vol.8/No. 242 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5603575A (en) * | 1994-10-20 | 1997-02-18 | Nsk Ltd. | Rolling bearing unit with rotating speed detector |
| US5722777A (en) * | 1994-10-20 | 1998-03-03 | Nsk, Ltd. | Rolling bearing unit with rotating speed detector |
| US5893648A (en) * | 1996-07-30 | 1999-04-13 | The Timken Company | Combined bearing and sensor assembly |
| US5967669A (en) * | 1996-10-11 | 1999-10-19 | Nsk Ltd. | Rolling bearing unit with rotational speed sensor |
| US6109794A (en) * | 1997-07-17 | 2000-08-29 | Skf Industrie S.P.A. | Rolling contact bearing provided with a seal and an electrostatic current discharge device |
| EP0930505A1 (en) * | 1998-01-16 | 1999-07-21 | SKF INDUSTRIE S.p.A. | A rolling bearing unit with a rotating speed measuring device |
| US6323640B1 (en) | 1998-01-16 | 2001-11-27 | Skf Industrie S.P.A. | Rolling bearing unit with a rotating speed measuring device |
| US6190051B1 (en) | 1998-02-24 | 2001-02-20 | Skf Industrie S.P.A. | Roller contact bearing with a sealing device and a device for rotation speed |
| US6153514A (en) * | 1999-01-04 | 2000-11-28 | Advanced Micro Devices, Inc. | Self-aligned dual damascene arrangement for metal interconnection with low k dielectric constant materials and nitride middle etch stop layer |
| CN104421343A (en) * | 2013-09-04 | 2015-03-18 | Skf公司 | Sealing and signaling device, in particular for a rolling bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO910725A0 (en) | 1991-09-26 |
| IT1250840B (en) | 1995-04-21 |
| ITTO910725A1 (en) | 1993-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8131 | Rejection |