DE922445C - Electric drive device for eddy current tachometer - Google Patents

Electric drive device for eddy current tachometer

Info

Publication number
DE922445C
DE922445C DEW402D DEW0000402D DE922445C DE 922445 C DE922445 C DE 922445C DE W402 D DEW402 D DE W402D DE W0000402 D DEW0000402 D DE W0000402D DE 922445 C DE922445 C DE 922445C
Authority
DE
Germany
Prior art keywords
eddy current
drive device
electric drive
magnet
tachometer
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.)
Expired
Application number
DEW402D
Other languages
German (de)
Inventor
Gustav Kraemer
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.)
Westfaelische Metall Industrie KG Hueck and Co
Original Assignee
Westfaelische Metall Industrie KG Hueck and Co
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 Westfaelische Metall Industrie KG Hueck and Co filed Critical Westfaelische Metall Industrie KG Hueck and Co
Priority to DEW402D priority Critical patent/DE922445C/en
Application granted granted Critical
Publication of DE922445C publication Critical patent/DE922445C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • H02K49/02—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type
    • H02K49/04—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type
    • H02K49/043—Dynamo-electric clutches; Dynamo-electric brakes of the asynchronous induction type of the eddy-current hysteresis type with a radial airgap
    • 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
    • G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
    • G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Description

Zur Fernanzeige der Wellendrehzahl z. B. von Verbrennungskraftmaschinen verwendet man als Drehzahlgeber Wechs eistromgeneratoren, die mit der Motorenwelle gekuppelt sind und deren Strom einem Synchronmotor zugeleitet wird, der seinerseits einen Wirbelstromgeschwindigkeitsmesser antreibt. Dieser Geschwindigkeitsmesser zeigt entweder die Umdrehungszahl der Motorenwelle oder die Geschwindigkeit des Fahrzeuges in Kilometer pro Stunde an. Die Erfindung betrifft einen Fernantrieb der beschriebenen Art, bei der der Synchronmotor und der Wirbeistromanzeiger eine Baueinheit bilden. Zweck der Erfindung ist eine bauliche Vereiniachung der bekannten Geräte. Sie besteht daraus, daß der umlaufende Magnet des Synchronmotors zugleich den Magneten des Wirbelstromdrehzahlmessers bildet. Diese auch im Hinblick auf die Raumersparnis vorteilhafte Ausbildung wird vorteilhaft dadurch erreicht, daß der Magnetläufer mit einer Verlängerung unter die Wirbelstromglocke greift. For remote display of the shaft speed z. B. of internal combustion engines alternating current generators connected to the motor shaft are used as speed sensors are coupled and whose current is fed to a synchronous motor, which in turn drives an eddy current speedometer. That speedometer shows either the number of revolutions of the motor shaft or the speed of the Vehicle in kilometers per hour. The invention relates to a remote operator of the type described, in which the synchronous motor and the vortex current indicator one Form unit. The purpose of the invention is a structural simplification of the known Devices. It consists of the rotating magnet of the synchronous motor at the same time forms the magnet of the eddy current tachometer. This also with regard to the Space saving advantageous training is advantageously achieved in that the Magnetic rotor engages with an extension under the eddy current bell.

In der Zeichnung ist die Erfindung in einer beispielsweisen Ausführungsform veranschaulicht. In the drawing the invention is in an exemplary embodiment illustrated.

Der in das Gehäuse b eingesetzte Wirbelstromdrehzahlmesser ist mit dem den Synchronmotor d aufnehmenden Gehäuse c mit den Kontaktklemmen a zu einer Baueinheit verbunden. Der umlaufende Dauermagnet e des Synchronmotors weist eine Verlängerung et auf, die unter die Wirbeistromgiocke f greift. Diese Verlängerung et des Magneten e für den Synchronmotor bildet erfindungsgemäß den Magneten des Wirbelstromdrehzahlmessers. The eddy current tachometer inserted into the housing b is with the housing c receiving the synchronous motor d with the contact terminals a to one Unit connected. The rotating permanent magnet e of the synchronous motor has a Extension et, which engages under the Wirbeistromgiocke f. This extension et of the magnet e for the synchronous motor according to the invention forms the magnet of the Eddy current tachometer.

Im Bereich der Wirbelstromglocke f ist eine Temperaturkompensation in Form eines in die Mantelfläche des Magneten eingelassenen Ringes g aus temperaturveränderlichem Material vorgesehen. There is temperature compensation in the area of the eddy current bell f in the form of a ring g made of temperature-variable material embedded in the surface of the magnet Material provided.

Diese Ausbildung ist jedoch nicht Gegenstand des Patents.However, this training is not the subject of the patent.

Der Drehzahlmesser ist in üblicher Weise mit einer Rüclcholfeder h und einem Zeiger i ausgestattet, der die Geschwindigkeit auf der Skala k anzeigt. Mit I sind Dynamobleche bezeichnet, die als Asynchronmotor wirken; die den Magneten e, et tragende Hohlwelle n sitzt auf dem Zapfen m; o ist die Zeigerwelle. The tachometer is in the usual way with a back spring h and a pointer i, which shows the speed on the scale k. I designates dynamo sheets that act as an asynchronous motor; the the magnet e, et supporting hollow shaft n sits on the pin m; o is the pointer shaft.

Dadurch, daß der umlaufende Magnet des Synchronmotors zugleich den Magneten für den Drehzahlmesser bildet, und zwar ohne Einschaltung von Zwischengliedern, wird eine hohe Genauigkeit der Messung erreicht. The fact that the rotating magnet of the synchronous motor at the same time Forms magnets for the tachometer, without the involvement of intermediate links, a high accuracy of the measurement is achieved.

PATENTANSPRACHE 1. Elektrische Antriebseinrichtung für Wirbelstromtachometer mit einem umlaufenden permanenten Magneten, die aus einem mit der Antriebswelle, bei Fahrzeugen mit deren Wegwelle gekuppelten Wechselstromgenerator und einem den Rotor des Wirbelstromtachometers antreibenden, mit dem Tachometer eine Baueinheit bildenden Synchronmotor besteht, dadurch gekennzeichnet, daß der umlaufende Dauermagnet (e) des Synchronmotors (d) auch den Magneten (et) für den Geschwindigkeitsmesser bildet. PATENT APPEAL 1. Electric drive device for eddy current tachometers with a rotating permanent magnet, which consists of one with the drive shaft, in vehicles with their drive shaft coupled alternator and a The rotor of the eddy current tachometer driving, with the tachometer a structural unit forming synchronous motor, characterized in that the rotating permanent magnet (e) the synchronous motor (d) also the magnet (et) for the speedometer forms.

Claims (1)

2. Einrichtung nach Anspruch I mit einem glockenförmigen Wirbelstromanker, dadurch gekennzeichnet, daß der Magnet des Synchronmotors mit einer Verlängerung (el) unter die Wirbelstromglocke (f) greift. 2. Device according to claim I with a bell-shaped eddy current armature, characterized in that the magnet of the synchronous motor with an extension (el) reaches under the eddy current bell (f). Angezogene Druckschriften: Deutsche Patentschriften Nr. 482 768, 427 045, 54 702; USA.-Patentschrift Nr. 2 232 789. Attached publications: German patent specifications No. 482 768, 427 045, 54 702; U.S. Patent No. 2,232,789.
DEW402D 1943-07-11 1943-07-11 Electric drive device for eddy current tachometer Expired DE922445C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW402D DE922445C (en) 1943-07-11 1943-07-11 Electric drive device for eddy current tachometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW402D DE922445C (en) 1943-07-11 1943-07-11 Electric drive device for eddy current tachometer

Publications (1)

Publication Number Publication Date
DE922445C true DE922445C (en) 1955-01-17

Family

ID=7590792

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW402D Expired DE922445C (en) 1943-07-11 1943-07-11 Electric drive device for eddy current tachometer

Country Status (1)

Country Link
DE (1) DE922445C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016966B (en) * 1956-01-11 1957-10-03 Max Wuppermann Dipl Ing Attachment for tachometer or the like.
DE1063412B (en) * 1958-10-18 1959-08-13 Vdo Schindling Magnet arrangement for eddy current tachometer
FR2482730A1 (en) * 1980-05-14 1981-11-20 Jaeger DEVICE FOR MEASURING THE FREQUENCY OF AN ELECTRICAL CURRENT REPRESENTING A VARIABLE SIZE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE54702C (en) * 1890-06-20 1890-12-06 SCHUCKERT & Co., COMMANDITGESELLSCHAFT, in Nürnberg Speed indicator with an electric motor drive
DE427045C (en) * 1925-06-10 1926-03-24 Jaeger Ets Ed Speedometer
DE482768C (en) * 1925-09-26 1929-09-19 Georges Mombur Eddy current speedometer
US2232789A (en) * 1937-03-22 1941-02-25 Square D Co Tachometer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE54702C (en) * 1890-06-20 1890-12-06 SCHUCKERT & Co., COMMANDITGESELLSCHAFT, in Nürnberg Speed indicator with an electric motor drive
DE427045C (en) * 1925-06-10 1926-03-24 Jaeger Ets Ed Speedometer
DE482768C (en) * 1925-09-26 1929-09-19 Georges Mombur Eddy current speedometer
US2232789A (en) * 1937-03-22 1941-02-25 Square D Co Tachometer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016966B (en) * 1956-01-11 1957-10-03 Max Wuppermann Dipl Ing Attachment for tachometer or the like.
DE1063412B (en) * 1958-10-18 1959-08-13 Vdo Schindling Magnet arrangement for eddy current tachometer
FR2482730A1 (en) * 1980-05-14 1981-11-20 Jaeger DEVICE FOR MEASURING THE FREQUENCY OF AN ELECTRICAL CURRENT REPRESENTING A VARIABLE SIZE
US4371834A (en) * 1980-05-14 1983-02-01 Jaeger Device for measuring the frequency of an electrical current representative of a variable quantity

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