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WO2005095992A1 - Speed sensor - Google Patents

Speed sensor Download PDF

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Publication number
WO2005095992A1
WO2005095992A1 PCT/EP2005/051070 EP2005051070W WO2005095992A1 WO 2005095992 A1 WO2005095992 A1 WO 2005095992A1 EP 2005051070 W EP2005051070 W EP 2005051070W WO 2005095992 A1 WO2005095992 A1 WO 2005095992A1
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WO
WIPO (PCT)
Prior art keywords
housing
carrier
speed sensor
plastic
coil
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
Application number
PCT/EP2005/051070
Other languages
German (de)
French (fr)
Inventor
Harry Skarpil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2005095992A1 publication Critical patent/WO2005095992A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator

Definitions

  • the invention relates to a speed sensor with a pot-like housing made of plastic, which has a cylindrical or step-cylindrical cup opening, into which a carrier made of plastic is inserted, which carries a coil, the winding ends of which are conductively connected to plug contacts, or carries an electrical circuit with electrical components and a sensor element, which is conductively connected to plug contacts, the plug contacts projecting axially to the pot opening into a pot-like plug receptacle also axially aligned thereto, and a mating plug can be inserted into the plug receptacle in a contacting manner.
  • the object of the invention is therefore to provide a speed sensor of the type mentioned which, with a simple structure, is to a large extent sealed against the ingress of moisture.
  • the housing consists of a plastic that is transparent to laser radiation and the carrier consists of a plastic that is not transparent for the laser radiation, that the plastic of the housing is identical to the plastic of the carrier, and that both plastics have approximately the same melting point and that the carrier in the area of the plug receptacle is connected to the housing radially by means of a diode laser is welded, the housing protruding sleeve-like axially beyond the connector receptacle-side end of the carrier and forming a step of larger cross-section of the connector receptacle into which the mating connector with its radially circumferential outer surface can be inserted adjacent to the radially circumferential inner wall of the large step with radial prestress.
  • This design enables a serial two-stage sealing of the inside of the housing to the outside without additional components such as seals.
  • the mating connector lies with its radially circumferential outer surface close to the radially circumferential inner wall of the sleeve-like housing.
  • This seal is usually sufficient to seal the interior of the housing from the outside. Should e.g. if this seal is not perfect, the second stage of the seal prevents moisture penetration, this second stage being carried out by welding the carrier to the inside of the housing. This second stage of sealing provides a seal even when the mating connector is removed.
  • the carrier can be inserted into the pot opening up to axial contact with the bottom of the pot opening of the housing.
  • the carrier is an injection molded part, into which the plug contacts designed as sheet metal parts are injected.
  • the sheet metal parts can be any suitable material.
  • the sheet metal parts can be any suitable material.
  • the speed sensor can be an inductive speed sensor, the support being a coil support on which the coil and a permanent magnet and a bolt made of an electrically conductive material and projecting through a coaxial opening of the coil are arranged.
  • a Hall chip which forms the sensor element, can also be arranged on the carrier.
  • the inductive speed sensor shown in the figure has a pot-like housing 1 made of a plastic that is transparent to laser radiation and has a cylindrical pot opening 2.
  • the housing 1 On a part of its cylindrical outer contour, the housing 1 is provided with an external thread 3, with which it can be screwed into a threaded bore of a holding part, not shown, until a flange 4 of the housing 1 abuts on the holding part.
  • a radially circumferential groove 5 is formed on the housing, into which a sealing ring 6 is inserted, which can be clamped between the flange 4 and the holding part.
  • a hexagon 7 formed on the outer contour of the housing 1, on which a tool for screwing in the speed encoder into the threaded bore of the holding part.
  • the speed sensor is an inductive speed sensor with a coil holder 9 that can be inserted into the pot opening 2 up to axial contact with the bottom 8 of the pot opening 2.
  • the coil holder 9 consists of a plastic that is similar to the plastic of the housing 1 and also has an approximately identical melting point.
  • the plastic of the coil carrier 9 is not transparent to the laser radiation.
  • the coil carrier 9 has a radially circumferential, outwardly open receptacle 10, in which a coil 11 is arranged.
  • An opening 12 is formed coaxially in the area of the coil 11 in the coil carrier 9, in which an bolt 13 made of an electrically conductive material is arranged. With its one end, the bolt 13 lies against the bottom 8 of the housing 1.
  • the bolt 13 With its other end region, the bolt 13 is axially in contact with a permanent magnet 15 inserted in a chamber 14 of the coil carrier 9.
  • Plug contacts 16 projecting into a pot-shaped receptacle 18 on the end of the coil carrier 9 facing away from the base 8.
  • the other ends are formed to form conductor tracks 17 close to the coil 11 and are connected to the winding ends of the coil 11, not shown.
  • the housing 1 and the coil carrier 9 have a radially circumferential weld 20, which is carried out by means of a diode laser. Due to the transparency of the plastic of the housing 1, the diode laser penetrates the housing 1 and then melts the non-transparent plastic of the coil carrier 9 that absorbs the diode laser.
  • the housing plastic also plasticizes in the area of the melted coil carrier plastic by means of heat conduction and leads to its fusion.
  • the housing 1 protrudes like a sleeve beyond the end of the coil carrier 9 at its mouth-side end region and forms a step 21 with a larger cross section of the plug receptacle 18.
  • a mating connector (not shown) can be inserted in such a way that it contacts the plug contacts 16 on the one hand and, on the other hand, with its radially circumferential circumferential surface on the radially circumferential inner wall 22 of the large steps 21 sealingly with radial prestress.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

The invention relates to a pot-shaped housing (1) made of plastic material, which has a cylindrical opening (2) in which a support (9) made of a plastic material is inserted. A coil (11) is mounted in the support (9), the ends of the winding of the coil being conductively connected to plug-in contacts (16). A mating connector contacting the plug-in contacts is inserted into a pot-shaped connector mount (18). The housing (1) consists of a plastic material that is transparent to laser radiation and the support (9) consists of a plastic material that is non-transparent to laser radiation. The plastic material of the housing (1) is the same as the plastic material of the support (1) and both plastic materials have an almost similar melting point. The support is welded in a radially peripheral manner to the housing (1) by means of a diode laser in the area of the connector mount, wherein the housing (1) projects axially in the form of an envelope beyond the end of the support (9) located on the connector mount side and forms a step (21) having a larger cross section than the connector mount (18), in which the radially peripheral enveloping surface of the mating connector is radially prestressed and inserted in the radially peripheral inner wall (22) of the large step (21).

Description

Be s eh eibungBe sibung

DrehzahlgeberTachometer

Die Erfindung bezieht sich auf einen Drehzahlgeber mit einem topfartigen Gehäuse aus einem Kunststoff, das eine zylindrische oder stufenzylindrische Topföffnung besitzt, in die ein Träger aus einem Kunststoff eingesetzt ist, der eine Spule trägt, deren Wicklungsenden mit Steckerkontakten leitend ver- bunden sind, oder der eine elektrische Schaltung mit elektrischen Bauelementen und einem Sensorelement trägt, die mit Steckerkontakten leitend verbunden ist, wobei die Steckerkontakte axial zur Topföffnung in eine dazu ebenfalls axial ausgerichtete topfartige Steckeraufnahme ragen und ein Gegenste- cker die Steckerkontakte kontaktierend in die Steckeraufnahme einführbar ist.The invention relates to a speed sensor with a pot-like housing made of plastic, which has a cylindrical or step-cylindrical cup opening, into which a carrier made of plastic is inserted, which carries a coil, the winding ends of which are conductively connected to plug contacts, or carries an electrical circuit with electrical components and a sensor element, which is conductively connected to plug contacts, the plug contacts projecting axially to the pot opening into a pot-like plug receptacle also axially aligned thereto, and a mating plug can be inserted into the plug receptacle in a contacting manner.

Bei derartigen Drehzahlgebern besteht insbesondere bei der Anwendung in Kraftfahrzeugen das Problem, dass keine Feuch- tigkeit in das Innere des Drehzahlgebers gelangen darf.The problem with such speed sensors, particularly when used in motor vehicles, is that moisture must not get inside the speed sensor.

Aufgabe der Erfindung ist es daher einen Drehzahlgeber der eingangs genannten Art zu schaffen, der bei einfachem Aufbau in hohem Maß dicht gegen Eindringen von Feuchtigkeit ist.The object of the invention is therefore to provide a speed sensor of the type mentioned which, with a simple structure, is to a large extent sealed against the ingress of moisture.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Gehäuse aus einem für eine Laserstrahlung transparenten Kunststoff und der Träger aus einem für die Laserstrahlung nichttransparenten Kunststoff besteht, dass der Kunststoff des Gehäuses gleichartig zum Kunststoff des Trägers ist und beide Kunststoffe einen etwa gleichen Schmelzpunkt aufweisen und dass der Träger im Bereich der Steckeraufnahme radial umlaufend mittels eines Diodenlasers mit dem Gehäuse ver- schweißt ist, wobei das Gehäuse hülsenartig axial über das steckeraufnahmenseitige Ende des Trägers hinausragt und eine Stufe größeren Querschnitts der Steckeraufnahme bildet, in die der Gegenstecker mit seiner radial umlaufenden Mantelflä- ehe an der radial umlaufenden Innenwand der großen Stufe mit radialer Vorspannung anliegend einführbar ist.This object is achieved according to the invention in that the housing consists of a plastic that is transparent to laser radiation and the carrier consists of a plastic that is not transparent for the laser radiation, that the plastic of the housing is identical to the plastic of the carrier, and that both plastics have approximately the same melting point and that the carrier in the area of the plug receptacle is connected to the housing radially by means of a diode laser is welded, the housing protruding sleeve-like axially beyond the connector receptacle-side end of the carrier and forming a step of larger cross-section of the connector receptacle into which the mating connector with its radially circumferential outer surface can be inserted adjacent to the radially circumferential inner wall of the large step with radial prestress.

Durch diese Ausbildung wird ohne zusätzliche Bauteile wie Dichtungen eine serielle zweistufige Abdichtung des Innen- rau s des Gehäuses nach außen erreicht. In der ersten Stufe liegt der Gegenstecker mit seiner radial umlaufenden Mantelfläche dicht an der radial umlaufenden Innenwand des hülsenartigen Gehäuses an. Diese Abdichtung ist normalerweise bereits ausreichend, um den Gehäuseinnenraum nach außen abzu- dichten. Sollte z.B. durch Beschädigungen diese Abdichtung nicht vollkommen sein, verhindert die zweite Stufe der Abdichtung ein Eindringen von Feuchtigkeit, wobei diese zweite Stufe durch die Verschweißung des Trägers auf der Innenseite des Gehäuses erfolgt. Diese zweite Stufe der Abdicljtung sorgt auch bei entferntem Gegenstecker für eine Abdichtung.This design enables a serial two-stage sealing of the inside of the housing to the outside without additional components such as seals. In the first stage, the mating connector lies with its radially circumferential outer surface close to the radially circumferential inner wall of the sleeve-like housing. This seal is usually sufficient to seal the interior of the housing from the outside. Should e.g. if this seal is not perfect, the second stage of the seal prevents moisture penetration, this second stage being carried out by welding the carrier to the inside of the housing. This second stage of sealing provides a seal even when the mating connector is removed.

Zur einfachen lagerichtigen Montage kann der Träger bis zur axialen Anlage an dem Boden der Topföffnung des Gehäuses in die TopfÖffnung eingeführt sein.For easy assembly in the correct position, the carrier can be inserted into the pot opening up to axial contact with the bottom of the pot opening of the housing.

Einfach herstellbar und montierbar ist es, wenn der Träger ein Spritzgussteil ist, in den die als Blechformteile ausgebildeten Steckerkontakte eingespritzt sind.It is easy to manufacture and assemble if the carrier is an injection molded part, into which the plug contacts designed as sheet metal parts are injected.

Dabei können in weiterer Vereinfachung die BlechformteileIn a further simplification, the sheet metal parts can

Leiterbahnzüge bildend bis nahe zu den Wicklungsenden geführt sein. Der Drehzahlgeber kann ein induktiver Drehzahlgeber sein, wobei der Träger ein Spulenträger ist, auf dem die Spule sowie ein Dauermagnet und ein eine koaxiale Öffnung der Spule durchragender Bolzen aus einem elektrisch leitfähigen Werk- stoff angeordnet sind.Conductor tracks can be routed close to the winding ends. The speed sensor can be an inductive speed sensor, the support being a coil support on which the coil and a permanent magnet and a bolt made of an electrically conductive material and projecting through a coaxial opening of the coil are arranged.

Auf dem Träger kann aber auch ein Hallchip angeordnet sein, das das Sensorelement bildet.However, a Hall chip, which forms the sensor element, can also be arranged on the carrier.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Die einzige Figur der Zeichnung zeigt einen Drehzahlgeber im Schnitt.An embodiment of the invention is shown in the drawing and is described in more detail below. The only figure in the drawing shows a speed sensor in section.

Der in der Figur dargestellte induktive Drehzahlgeber besitzt ein topfartiges Gehäuse 1 aus einem für eine Laserstrahlung transparenten Kunststoff, das eine zylindrische Topföffnung 2 besitzt.The inductive speed sensor shown in the figure has a pot-like housing 1 made of a plastic that is transparent to laser radiation and has a cylindrical pot opening 2.

An einem Teil seiner zylinderartigen Außenkontur ist das Gehäuse 1 mit einem Außengewinde 3 versehen, mit dem es in eine Gewindebohrung eines nicht dargestellten Halteteils bis zur Anlage eines Flansches 4 des Gehäuses 1 am Halteteil einschraubbar ist.On a part of its cylindrical outer contour, the housing 1 is provided with an external thread 3, with which it can be screwed into a threaded bore of a holding part, not shown, until a flange 4 of the housing 1 abuts on the holding part.

Zwischen Flansch 4 und Außengewinde 3 ist eine radial umlaufende Nut 5 am Gehäuse ausgebildet, in die ein Dichtring 6 eingelegt wird, der zwischen dem Flansch 4 und dem Halteteil verspannbar ist.Between the flange 4 and the external thread 3, a radially circumferential groove 5 is formed on the housing, into which a sealing ring 6 is inserted, which can be clamped between the flange 4 and the holding part.

An den Flansch 4 schließt sich ein an der Außenkontur des Gehäuses 1 ausgebildeter Sechskant 7 an, an dem ein Werkzeug zum Einschrauben des Drehzahlgebers in die Gewindebohrung des Halteteils angreifen kann.Connected to the flange 4 is a hexagon 7 formed on the outer contour of the housing 1, on which a tool for screwing in the speed encoder into the threaded bore of the holding part.

Der Drehzahlgeber ist ein induktiver Drehzahlgeber mit einem in die Topföffnung 2 bis zur axialen Anlage an dem Boden 8 der TopfÖffnung 2 einführbaren Spulenträger 9. Der Spulenträger 9 besteht aus einem zum Kunststoff des Gehäuses 1 gleichartigen Kunststoff, der auch einen etwa gleichen Schmelzpunkt besitzt. Dabei ist der Kunststoff des Spulenträgers 9 für die Laserstrahlung nichttransparent.The speed sensor is an inductive speed sensor with a coil holder 9 that can be inserted into the pot opening 2 up to axial contact with the bottom 8 of the pot opening 2. The coil holder 9 consists of a plastic that is similar to the plastic of the housing 1 and also has an approximately identical melting point. The plastic of the coil carrier 9 is not transparent to the laser radiation.

An seinem dem Boden 8 näheren Endbereich weist der Spulenträger 9 eine radial umlaufende, nach außen offene Aufnahme 10 auf, in der eine Spule 11 angeordnet ist. Koaxial ist im Be- reich der Spule 11 im Spulenträger 9 eine Öffnung 12 ausgebildet, in der ein Bolzen 13 aus einem elektrisch leitfähigen Werkstoff angeordnet ist. Mit seinem einen stirnseitigen Ende liegt der Bolzen 13 an dem Boden 8 des Gehäuses 1 an.At its end region closer to the bottom 8, the coil carrier 9 has a radially circumferential, outwardly open receptacle 10, in which a coil 11 is arranged. An opening 12 is formed coaxially in the area of the coil 11 in the coil carrier 9, in which an bolt 13 made of an electrically conductive material is arranged. With its one end, the bolt 13 lies against the bottom 8 of the housing 1.

Mit seinem anderen Endbereich ist der Bolzen 13 axial an einem in einer Kammer 14 des Spulenträgers 9 eingesetzten Dauermagnet 15 in Anlage.With its other end region, the bolt 13 is axially in contact with a permanent magnet 15 inserted in a chamber 14 of the coil carrier 9.

In dem als Spritzgussteil ausgebildeten Spulenträger sind zwei Blechformteile eingespritzt, von denen die einen EndenIn the coil carrier designed as an injection molded part, two sheet metal parts are injected, one end of which

Steckerkontakte 16 bildend in eine topfartig an dem dem Boden 8 abgewandten Ende des Spulenträgers 9 ausgebildete Steckeraufnahme 18 ragen.Plug contacts 16 projecting into a pot-shaped receptacle 18 on the end of the coil carrier 9 facing away from the base 8.

Die anderen Enden sind Leiterbahnzüge 17 bildend bis nahe zu der Spule 11 geführt und werden mit den nicht dargestellten Wicklungsenden der Spule 11 verbunden. Etwa im Bereich des Bodens 19 der Steckeraufnähme 18 haben das Gehäuse 1 und der Spulenträger 9 eine radial umlaufende Verschweißung 20, die mittels eines Diodenlasers erfolgt ist. Durch die Transparenz des Kunststoffs des Gehäuses 1 durch- dringt der Diodenlaser das Gehäuse 1 und schmilzt dann den den Diodenlaser absorbierenden, nichttransparenten Kunststoff des Spulenträgers 9.The other ends are formed to form conductor tracks 17 close to the coil 11 and are connected to the winding ends of the coil 11, not shown. Approximately in the area of the bottom 19 of the plug receptacles 18, the housing 1 and the coil carrier 9 have a radially circumferential weld 20, which is carried out by means of a diode laser. Due to the transparency of the plastic of the housing 1, the diode laser penetrates the housing 1 and then melts the non-transparent plastic of the coil carrier 9 that absorbs the diode laser.

Mittels Wärmeleitung plastifiziert sich auch der Gehäuse- kunststoff im Bereich des geschmolzenen Spulenträgerkunst- stoffs und führt zu deren Verschmelzung.The housing plastic also plasticizes in the area of the melted coil carrier plastic by means of heat conduction and leads to its fusion.

Das Gehäuse 1 ragt an seinem mündungsseitigen Endbereich hülsenartig über das Ende des Spulenträgers 9 hinaus und bildet eine Stufe 21 größeren Querschnitts der Steckeraufnahme 18.The housing 1 protrudes like a sleeve beyond the end of the coil carrier 9 at its mouth-side end region and forms a step 21 with a larger cross section of the plug receptacle 18.

In diese Stufe 21 größeren Querschnitts ist ein nicht dargestellter Gegenstecker derart einführbar, dass er zum einen die Steckerkontakte 16 kontaktiert und zum anderen mit seiner radial umlaufenden Mantelfläche an der radial umlaufenden Innenwand 22 der großen Stufen 21 dichtend mit radialer Vorspannung in Anlage ist. In this step 21 of larger cross-section, a mating connector (not shown) can be inserted in such a way that it contacts the plug contacts 16 on the one hand and, on the other hand, with its radially circumferential circumferential surface on the radially circumferential inner wall 22 of the large steps 21 sealingly with radial prestress.

Claims

Patentansprüche claims 1. Drehzahlgeber mit einem topfartigen Gehäuse aus einem Kunststoff, das eine zylindrische oder stufenzylindri- sehe Topföffnung besitzt, in die ein Träger aus einem Kunststoff eingesetzt ist, der eine Spule trägt, deren Wicklungsenden mit Steckerkontakten leitend verbunden sind, oder der eine elektrische Schaltung mit elektrischen Bauelementen und einem Sensorelement trägt, die mit Steckerkontakten leitend verbunden ist, wobei die Steckerkontakte axial zur Topföffnung in eine dazu e- benfalls axial ausgerichtete topfartige Steckeraufnahme ragen und ein Gegenstecker die Steckerkontakte kontaktierend in die Steckeraufnahme einführbar ist, d a - dur ch gekenn z ei chnet , dass das Gehäuse (1) aus einem für eine Laserstrahlung transparenten Kunststoff und der Träger (9) aus einem für die Laserstrahlung nichttransparenten Kunststoff besteht, dass der Kunststoff des Gehäuses (1) gleichartig zum Kunst- Stoff des Trägers (9) ist und beide Kunststoffe einen etwa gleichen Schmelzpunkt aufweisen und dass der Träger (9) im Bereich der Steckeraufnahme (18) radial umlaufend mittels eines Diodenlasers mit dem Gehäuse (1) verschweißt ist, wobei das Gehäuse (1) hülsenartig axi- al über das steckeraufnahmenseitige Ende des Trägers (9) hinausragt und eine Stufe (21) größeren Querschnitts der Steckeraufnahme (18) bildet, in die der Gegenstecker mit seiner radial umlaufenden Mantelfläche an der radial umlaufenden Innenwand (22) der großen Stufe (21) mit radialer Vorspannung anliegend einführbar ist. 1. Speed sensor with a pot-like housing made of plastic, which has a cylindrical or step-cylindrical pot opening, into which a carrier made of plastic is inserted, which carries a coil, the winding ends of which are conductively connected to plug contacts, or which has an electrical circuit carries electrical components and a sensor element, which is conductively connected to the plug contacts, the plug contacts projecting axially to the pot opening into a pot-like plug receptacle, which is also axially aligned therewith, and a mating plug can be inserted into the plug receptacle in a contacting manner, so as to be identified chnet that the housing (1) consists of a plastic that is transparent to laser radiation and the carrier (9) consists of a plastic that is not transparent to the laser radiation, that the plastic of the housing (1) is similar to the plastic of the carrier (9) and both plastics have approximately the same melting point kt and that the carrier (9) in the area of the connector receptacle (18) is welded radially all round to the housing (1) by means of a diode laser, the housing (1) projecting axially like a sleeve beyond the end of the carrier (9) on the connector receptacle side and forms a step (21) of larger cross-section of the connector receptacle (18) into which the mating connector with its radially circumferential outer surface can be inserted so as to bear against the radially circumferential inner wall (22) of the large step (21) with radial prestress. 2. Drehzahlgeber nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der Träger (9) bis zur axialen Anlage an dem Boden (8) der Topf Öffnung (2) des Gehäuses (1) in die Topf Öffnung (2) eingeführt ist.2. Speed sensor according to claim 1, so that the carrier (9) is inserted into the pot opening (2) up to the axial contact with the bottom (8) of the pot opening (2) of the housing (1). 3. Drehzahlgeber nach einem der vorhergehenden Ansprüche, dadu rch ge ke nn z ei chnet , dass der Träger (9) ein Spritzgussteil ist, in den die als Blechformteile ausgebildeten Steckerkontakte (16) ein- gespritzt sind.3. Speed sensor according to one of the preceding claims, so that the carrier (9) is an injection molded part, into which the plug contacts designed as sheet metal parts (16) are injected. 4. Drehzahlgeber nach einem der vorhergehenden Ansprüche, dadurch ge kenn z ei chnet , dass die Blechformteile Leiterbahnzüge (17) bildend bis nahe zu den Wicklungsenden geführt sind.4. Speed sensor according to one of the preceding claims, characterized ge z ei chnet that the sheet metal parts conductor tracks (17) are guided forming close to the winding ends. 5. Drehzahlgeber nach einem der vorhergehenden Ansprüche, dadurch ge kenn z ei chnet , dass der Drehzahlgeber ein induktiver Drehzahlgeber ist.5. Speed sensor according to one of the preceding claims, characterized ge z ei chnet that the speed sensor is an inductive speed sensor. 6. Drehzahlgeber nach Anspruch 5, dadur ch gekenn z ei chnet , dass der Träger (9) ein Spulenträger ist, auf dem die Spule (11) sowie ein Dauermagnet (15) und ein eine koaxiale Öffnung (12) der Spu- le (11) durchragender Bolzen (13) aus einem elektrisch leitfähigen Werkstoff angeordnet sind.6. Speed sensor according to claim 5, characterized in that the carrier (9) is a coil carrier on which the coil (11) and a permanent magnet (15) and a coaxial opening (12) of the coil ( 11) protruding bolts (13) made of an electrically conductive material are arranged. 7. Drehzahlgeber nach einem der Ansprüche 1 bis 4, dadurch gekenn z ei chnet , dass auf dem Träger ein Hallchip angeordnet ist. 7. Speed sensor according to one of claims 1 to 4, characterized in that a hall chip is arranged on the carrier.
PCT/EP2005/051070 2004-04-02 2005-03-10 Speed sensor Ceased WO2005095992A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410016430 DE102004016430B3 (en) 2004-04-02 2004-04-02 Revolution rate sensor for use in motor vehicles has housing made of plastic that is transparent to laser radiation and carrier made of a plastic that is non-transparent to laser radiation
DE102004016430.4 2004-04-02

Publications (1)

Publication Number Publication Date
WO2005095992A1 true WO2005095992A1 (en) 2005-10-13

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WO (1) WO2005095992A1 (en)

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DE102018000221A1 (en) 2018-01-12 2019-07-18 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Speed sensor with insulating inner and outer recesses

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DE19947437A1 (en) * 1999-10-02 2001-04-05 Valeo Schalter & Sensoren Gmbh Sensor for use in motor vehicle management system is laser welded to housing

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Publication number Priority date Publication date Assignee Title
US5764057A (en) * 1996-06-24 1998-06-09 Trw Inc. Sensor unit with shell structure having a detent structure
DE19947437A1 (en) * 1999-10-02 2001-04-05 Valeo Schalter & Sensoren Gmbh Sensor for use in motor vehicle management system is laser welded to housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013020385A1 (en) 2012-12-28 2014-07-03 Crm-System Gmbh Revolution counter for motor car, has housing within which stator is rotatably arranged around rotational axis and sensor arrangement, which is arranged to detect relative revolutions between stator and housing

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