DE102009011807A1 - Displacement measuring system for detecting operating displacement of piston of master cylinder in hydraulic path in e.g. brake actuating application, has axially displaceable element staying in operative connection with piston by push rod - Google Patents

Displacement measuring system for detecting operating displacement of piston of master cylinder in hydraulic path in e.g. brake actuating application, has axially displaceable element staying in operative connection with piston by push rod Download PDF

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Publication number
DE102009011807A1
DE102009011807A1 DE102009011807A DE102009011807A DE102009011807A1 DE 102009011807 A1 DE102009011807 A1 DE 102009011807A1 DE 102009011807 A DE102009011807 A DE 102009011807A DE 102009011807 A DE102009011807 A DE 102009011807A DE 102009011807 A1 DE102009011807 A1 DE 102009011807A1
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DE
Germany
Prior art keywords
piston
measuring system
axially displaceable
displaceable element
master cylinder
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
DE102009011807A
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German (de)
Inventor
Renato Franca
Roselene Santos
Saulo Ribeiro
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
LuK Lamellen und Kupplungsbau Beteiligungs KG
LuK Lamellen und Kupplungsbau GmbH
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 LuK Lamellen und Kupplungsbau Beteiligungs KG, LuK Lamellen und Kupplungsbau GmbH filed Critical LuK Lamellen und Kupplungsbau Beteiligungs KG
Priority to DE102009011807A priority Critical patent/DE102009011807A1/en
Publication of DE102009011807A1 publication Critical patent/DE102009011807A1/en
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/06—Details
    • F15B7/08—Input units; Master units
    • 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
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/08—Brake-action initiating means for personal initiation hand actuated
    • B60T7/085—Brake-action initiating means for personal initiation hand actuated by electrical means, e.g. travel, force sensors
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0025—Measuring of vehicle parts
    • G01B5/0028—Brakes, brakeshoes, clutches
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/18—Sensors; Details or arrangements thereof

Abstract

The system (1) has an axially displaceable element with magnets and a sensor assembly (4) provided in a measuring cylinder (2) against elastic force of a compression spring. The axially displaceable element stays in operative connection with the piston by a transfer element i.e. push rod (6). The sensor assembly covers a complete distance of the displaceable element. The spring is supported at the displaceable element and at a stop. The stop is arranged at an end of the measuring cylinder, where the end is turned away from the piston.

Description

Die Erfindung betrifft ein Wegmesssystem für einen Geberzylinder und findet zur Erfassung des Stellweges des Kolbens des Geberzylinders in einer hydraulischen Strecke bei einer Kupplungs- oder Bremsbetätigung Anwendung.The The invention relates to a displacement measuring system for a master cylinder and takes place to detect the travel of the piston of the master cylinder in a hydraulic line during a clutch or brake application Application.

Es sind zahlreiche Lösungen bekannt, welche am Kolben einen Magneten und außen am Gehäuse eine Sensorbaugruppe mit einem Magnetsensor zur Erfassung des Stellweges des Kolbens aufweist. Eine derartige Vorrichtung ist beispielsweise aus DE 203 15 735 U1 bekannt, wobei am Gehäuse eines Geber- oder Nehmerzylinders ein Sensorgehäuse angeordnet ist, in welchem ein magnetflussempfindlicher Sensor angeordnet ist. Das Sensorgehäuse wird mittels Schrauben an entsprechenden Befestigungsflanschen angeschraubt. Diese Verbindungsart ist aufwendig, benötigt einen relativ großen Bauraum und gewährleistet keine lagesichere Befestigung des Sensorgehäuses am Gehäuse des Geber- oder Nehmerzylinders, da sich die beiden Schraubverbindungen bei mechanischer Beanspruchung lösen können. Weiterhin kann es durch die beiden an sich gegenüberliegenden Gehäuseenden und an unterschiedlichen Gehäuseseiten angreifenden Schraubverbindungen zum Verzug des Sensorgehäuses kommen. Nachteilig ist ebenfalls, dass bei der Montage eine Schnittstelle entsteht, an der zwei Gehäuseteile aufeinander montiert werden. Somit vergrößert sich der Luftspalt zwischen Sensorelement (im Sensorgehäuse) und zu sensierendes Objekt (im Kolben des Zylinders). Je größer der Abstand ist, desto schwieriger wird es, die Sensierung überhaupt durchführen zu können.Numerous solutions are known which have a magnet on the piston and a sensor module on the outside of the housing with a magnetic sensor for detecting the travel of the piston. Such a device is for example off DE 203 15 735 U1 known, wherein on the housing of a donor or slave cylinder, a sensor housing is arranged, in which a magnetflußempfindlicher sensor is arranged. The sensor housing is screwed by means of screws to corresponding mounting flanges. This type of connection is complicated, requires a relatively large amount of space and ensures no positionally secure attachment of the sensor housing on the housing of the donor or slave cylinder, since the two screw can solve under mechanical stress. Furthermore, it can come by the two opposite ends of the housing and acting on different sides of the housing screw to delay the sensor housing. Another disadvantage is that an interface is created during assembly, are mounted on the two housing parts to each other. Thus, the air gap between sensor element (in the sensor housing) and object to be sensed increases (in the piston of the cylinder). The larger the distance, the harder it becomes to be able to perform the sensing at all.

Weiterhin ist der Abstand des Magnetsensors zum Magnet relativ groß, da das Sensorgehäuse dazwischen liegt. Auch wirkt sich die aufgrund der vielen Bauteile zu verzeichnende große Toleranzkette negativ auf die Genauigkeit des Messsystems aus.Farther is the distance of the magnetic sensor to the magnet relatively large, because the sensor housing is in between. Also affects due to the many components to record large Tolerance chain negatively affects the accuracy of the measuring system.

Durch die Montage der Komponenten zueinander (z. B. durch Schrauben) werden Sensor und Gebergehäuse nur unzureichend genau zueinander positioniert. Dies hat zur Folge, dass eine Kalibrierung des Sensors notwendig wird.By the assembly of the components to each other (eg by screws) are Sensor and encoder housing positioned only insufficiently to each other. This has the consequence that a calibration of the sensor is necessary becomes.

Aufgabe der Erfindung ist es, ein Wegmesssystem für einen Geberzylinder zu entwickeln, welches für die Befestigung des Sensors einen minimalen radialen Bauraum benötigt. Weiterhin soll der Abstand zwischen Magnet und Sensor verringert und somit die Messgenauigkeit des Systems erhöht werden.task The invention is a path measuring system for a master cylinder to develop, which for the attachment of the sensor requires a minimal radial space. Continue to the distance between magnet and sensor decreases and thus the Measurement accuracy of the system can be increased.

Diese Aufgabe wird durch die Merkmale des ersten Patentanspruchs gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.These The object is solved by the features of the first claim. Advantageous embodiments emerge from the subclaims.

Bei dem Wegmesssystem für einen Geberzylinder zur Erfassung des Stellweges des Kolbens des Geberzylinders ist erfindungsgemäß das Wegmesssystem dem Geberzylinder nachgeschaltet und besteht aus einem in einem Messzylinder axial verschiebbaren Element mit einem Magneten und einer Sensorbaugruppe, wobei das axialverschiebbare Element mittels eines Übertragungsgliedes mit dem Kolben in Wirkverbindung steht. Die Sensorbaugruppe ist außen am Gehäuse des Messzylinders angeordnet oder in das Gehäuse des Messzylinders integriert. Die Sensorbaugruppe überdeckt dabei vorteilhafter Weise erstmalig die gesamte Wegstrecke des axial verschiebbaren Elementes. Das axialverschiebbare Element wird insbesondere mittels einer Druckstange mit dem Kolben gekoppelt.at the displacement measuring system for a master cylinder for detection the travel of the piston of the master cylinder is the invention Position measuring system downstream of the master cylinder and consists of a in an measuring cylinder axially displaceable element with a magnet and a sensor assembly, wherein the axially displaceable element by means of a transfer member with the piston in operative connection stands. The sensor module is on the outside of the housing arranged in the measuring cylinder or in the housing of the measuring cylinder integrated. The sensor module covers more advantageous For the first time the entire distance of the axially displaceable Element. The axially displaceable element is in particular by means of a push rod coupled to the piston.

Der Magnet wird an bzw. in das axial verschiebbare Element eingegossen oder eingeclipst. Alternativ ist es möglich, dem axialverschiebbaren Element magnetisierbares Material beizumengen.Of the Magnet is poured into or into the axially displaceable element or clipped. Alternatively, it is possible for the axially displaceable element Add magnetizable material.

Bevorzugt ist das verschiebbare Element entgegen einer Federkraft einer Feder axial verschiebbar, die insbesondere als Druckfeder ausgebildet ist und sich an dem axialverschiebbaren Element und einem Anschlag im Messzylinder abstützt. Der Anschlag ist insbesondere an dem dem Koben abgewandten Ende des Messzylinders angeordnet.Prefers is the displaceable element against a spring force of a spring axially displaceable, in particular designed as a compression spring is and on the axially displaceable element and a stop supported in the measuring cylinder. The stop is in particular arranged at the end remote from the piston of the measuring cylinder.

Mit der erfindungsgemäßen Lösung ist ein geringer Abstand der Sensorbaugruppe mit dem axial verschiebbaren Element, in welchem der Magnet angeordnet ist realisierbar und dadurch eine hohe Messsicherheit gewährleistet. Es ist weiterhin erstmalig möglich, den gesamten Stellweg des Kolbens zu sensieren.With the solution according to the invention is a smaller one Distance of the sensor assembly with the axially displaceable element, in which the magnet is arranged realizable and thereby a ensures high measuring reliability. It is still the first time possible to sense the entire travel of the piston.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels und zugehöriger Zeichnungen näher erläutert. Es zeigen:The Invention will be described below with reference to an embodiment and associated drawings explained in more detail. Show it:

1 dreidimensionale Darstellung des Wegmesssystems, 1 three-dimensional representation of the position measuring system,

2 Längsschnitt durch das Wegmesssystem, 2 Longitudinal section through the displacement measuring system,

3 Längsschnitt durch das an den Geberzylinder adaptierten Wegmesssystem in einer vorderen Position, 3 Longitudinal section through the displacement sensor system adapted to the master cylinder in a forward position,

4 Längsschnitt durch das an den Geberzylinder adaptierten Wegmesssystem in einer hinteren Endposition, 4 Longitudinal section through the displacement sensor system adapted to the master cylinder in a rear end position,

Das Wegmesssystem 1 weist gern. 1 einen Messzylinder 2 auf, an dessen Außenkontur eine Ausnehmung 3 angeformt ist, in welcher eine Sensorbaugruppe 4 sitzt. Die Ausnehmung 3 ist mittels eines Deckels 3.1 verschlossen. An die Ausnehmung 3 ist ein Steckbereich 5 zum Anschluss eines hier nicht dargestellten Steckers angeformt. Aus dem Messzylinder 2 ragt in Richtung zu dem hier nicht dargestellten Geberzylinder durch einen mittigen Durchbruch 2.1 des Messzylinders 2 eine Druckstange 6.The distance measuring system 1 likes to show. 1 a measuring cylinder 2 on, on the outer contour of a recess 3 is formed, in which a sensor assembly 4 sitting. The recess 3 is by means of a lid 3.1 locked. To the recess 3 is a plug-in area 5 molded to connect a plug, not shown here. From the measuring cylinder 2 protrudes in the direction of the master cylinder, not shown here through a central opening 2.1 of the measuring cylinder 2 a push rod 6 ,

Den Längsschnitt durch das Wegmesssystem in der vorderen Endposition zeigt 3. In dem Messzylinder 2 ist ein axial verschiebbares Element 7 angeordnet, an welchem die Druckstange 6 befestigt ist.The longitudinal section through the displacement measuring system in the front end position shows 3 , In the measuring cylinder 2 is an axially displaceable element 7 arranged on which the push rod 6 is attached.

Das axial verschiebbare Element 7 weist einen Magneten 8 auf und besitzt an seiner der Druckstange 6 abgewandten Seite eine Druckfläche 9. An dem dem Durchbruch 2.1 gegenüberliegenden Ende des Messzylinders 2 ist in diesem ein Anschlag 10 angeordnet. Zwischen der Druckfläche 9 und dem Anschlag 10 stützt sich eine Druckfeder 11 ab.The axially displaceable element 7 has a magnet 8th on and has at its the push rod 6 opposite side of a printing surface 9 , At the breakthrough 2.1 opposite end of the measuring cylinder 2 is a stop in this 10 arranged. Between the printing surface 9 and the stop 10 supports a compression spring 11 from.

3 zeigt den Längsschnitt durch das an den Geberzylinder 12 adaptierte Wegmesssystem 1 in einer vorderen Endposition und 4 in einer hinteren Endposition. 3 shows the longitudinal section through the to the master cylinder 12 adapted position measuring system 1 in a front end position and 4 in a rear end position.

Das Ende des Messzylinders 2, welches den Durchbruch 2.1 aufweist, sitzt in einer Ausnehmung 13 des Geberzylinders. Die Druckstange 6 ist an dem stirnseitigen Ende 14 des Kolbens 15 befestigt, der bei Betätigung der am anderen Ende des Kolbens befestigten Kolbenstange 16 entlang der Achse A bewegt wird.The end of the measuring cylinder 2 which is the breakthrough 2.1 has, sits in a recess 13 of the master cylinder. The push rod 6 is at the front end 14 of the piston 15 attached, the upon actuation of the piston rod attached to the other end of the piston 16 is moved along the axis A.

Wirkt auf den Kolben 15 mittels der Kolbenstange 16 eine axiale Kraft F in Pfeilrichtung, so wird dieser aus seiner Position in 3 in Richtung zum Messzylinder 2 verschoben. Gleichzeitig wird die Druckstange 6 und mit dieser das axial verschiebbare Element 7 und der Magnet 8 entgegen der Federkraft der Druckfeder 11 in Richtung zum Anschlag 10 verschoben. Der Magnet 8 wird unter der Sensorbaugruppe 4 hindurch bewegt und induziert in dieser eine Veränderung des magnetischen Flusses, wodurch die axiale Lage des Magneten 8, und darüber die axiale Lage des Kolbens 15 bestimmt werden kann.Act on the piston 15 by means of the piston rod 16 an axial force F in the direction of the arrow, so this is from its position in 3 towards the measuring cylinder 2 postponed. At the same time, the push rod 6 and with this the axially displaceable element 7 and the magnet 8th against the spring force of the compression spring 11 towards the stop 10 postponed. The magnet 8th will be under the sensor assembly 4 moves through it and induces in it a change of the magnetic flux, whereby the axial position of the magnet 8th , and about the axial position of the piston 15 can be determined.

Die hintere Endposition des Kolbens 15 und somit die hintere Endposition des Magneten 8 zeigt 4.The rear end position of the piston 15 and thus the rear end position of the magnet 8th shows 4 ,

Die Sensorbaugruppe 4 sitzt hier in nur geringem Abstand über dem Magneten 8, wodurch Messfehler vermieden werden.The sensor assembly 4 sits here just a short distance above the magnet 8th , which avoids measurement errors.

11
Wegmesssystemdisplacement measuring system
22
Messzylindermeasuring cylinders
2.12.1
Durchbruchbreakthrough
33
Ausnehmungrecess
3.13.1
Deckelcover
44
Sensorbaugruppesensor assembly
55
Steckbereichplug-in region
66
Druckstangepushrod
77
axial verschiebbares Elementaxial sliding element
88th
Magnetmagnet
99
Druckflächeprint area
1010
Anschlagattack
1111
Druckfedercompression spring
1212
GeberzylinderMaster cylinder
1313
Ausnehmungrecess
1414
stirnseitiges Endefrontal The End
1515
Kolbenpiston
1616
Kolbenstangepiston rod
AA
Achseaxis

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 20315735 U1 [0002] - DE 20315735 U1 [0002]

Claims (11)

Wegmesssystem (1) für einen Geberzylinder (12) zur Erfassung des Stellweges des Kolbens (15) des Geberzylinders (12), dadurch gekennzeichnet, dass das Wegmesssystem (1) dem Geberzylinder (12) nachgeschaltet ist und aus einem in einem Messzylinder (2) axial verschiebbaren Element (7) mit einem Magneten (8) und einer Sensorbaugruppe (4) besteht, wobei das axial verschiebbare Element (7) mittels eines Übertragungsgliedes mit dem Kolben (15) in Wirkverbindung steht.Position measuring system ( 1 ) for a master cylinder ( 12 ) for detecting the travel of the piston ( 15 ) of the master cylinder ( 12 ), characterized in that the displacement measuring system ( 1 ) the master cylinder ( 12 ) and from a in a measuring cylinder ( 2 ) axially displaceable element ( 7 ) with a magnet ( 8th ) and a sensor assembly ( 4 ), wherein the axially displaceable element ( 7 ) by means of a transmission member with the piston ( 15 ) is in operative connection. Wegmesssystem nach Anspruch 1, dadurch gekennzeichnet, dass die Sensorbaugruppe (4) am Gehäuse des Messzylinders (2) angeordnet ist.Position measuring system according to claim 1, characterized in that the sensor assembly ( 4 ) on the housing of the measuring cylinder ( 2 ) is arranged. Wegmesssystem nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Sensorbaugruppe (4) in das Gehäuse des Messzylinders (2) integriert ist.Position measuring system according to one of claims 1 or 2, characterized in that the sensor module ( 4 ) in the housing of the measuring cylinder ( 2 ) is integrated. Wegmesssystem nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Sensorbaugruppe (4) die gesamte Wegstrecke des axial verschiebbaren Elementes (7) überdeckt.Position measuring system according to one of claims 1 to 3, characterized in that the sensor assembly ( 4 ) the entire distance of the axially displaceable element ( 7 ) covered. Wegmesssystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das axial verschiebbare Element (7) mittels eines Übertragungsgliedes in Form einer Druckstange (6) mit dem Kolben (15) gekoppelt ist.Position measuring system according to one of claims 1 to 4, characterized in that the axially displaceable element ( 7 ) by means of a transfer member in the form of a push rod ( 6 ) with the piston ( 15 ) is coupled. Wegmesssystem nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Magnet (8) in/an das axial verschiebbare Element (7) ein/gegossen oder eingeclipst ist.Position measuring system according to one of claims 1 to 5, characterized in that the magnet ( 8th ) in / on the axially displaceable element ( 7 ) is / poured or clipped. Wegmesssystem nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass dem axial verschiebbaren Element (7) magnetisierbares Material beigemengt ist.Position measuring system according to one of claims 1 to 6, characterized in that the axially displaceable element ( 7 ) magnetizable material is added. Wegmesssystem nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das axial verschiebbare Element (7) entgegen einer Federkraft einer Feder axial verschiebbar ist.Position measuring system according to one of claims 1 to 7, characterized in that the axially displaceable element ( 7 ) is axially displaceable against a spring force of a spring. Wegmesssystem nach Anspruch 8, dadurch gekennzeichnet, dass die Feder eine Druckfeder (11) ist.Position measuring system according to claim 8, characterized in that the spring is a compression spring ( 11 ). Wegmesssystem nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Druckfeder (11) sich an dem axial verschiebbaren Element (7) und einem Anschlag (10) im Messzylinder (2) abstützt.Position measuring system according to claim 8 or 9, characterized in that the compression spring ( 11 ) on the axially displaceable element ( 7 ) and a stop ( 10 ) in the measuring cylinder ( 2 ) is supported. Wegmesssystem nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass der Anschlag (10) an dem dem Koben (15) abgewandten Ende des Messzylinders (2) angeordnet ist.Position measuring system according to one of claims 8 to 10, characterized in that the stop ( 10 ) on the Koben ( 15 ) facing away from the end of the measuring cylinder ( 2 ) is arranged.
DE102009011807A 2008-03-31 2009-03-05 Displacement measuring system for detecting operating displacement of piston of master cylinder in hydraulic path in e.g. brake actuating application, has axially displaceable element staying in operative connection with piston by push rod Ceased DE102009011807A1 (en)

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DE102009011807A DE102009011807A1 (en) 2008-03-31 2009-03-05 Displacement measuring system for detecting operating displacement of piston of master cylinder in hydraulic path in e.g. brake actuating application, has axially displaceable element staying in operative connection with piston by push rod

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DE102008016452.6 2008-03-31
DE102008016452 2008-03-31
DE102009011807A DE102009011807A1 (en) 2008-03-31 2009-03-05 Displacement measuring system for detecting operating displacement of piston of master cylinder in hydraulic path in e.g. brake actuating application, has axially displaceable element staying in operative connection with piston by push rod

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012214652A1 (en) 2011-09-16 2013-03-21 Schaeffler Technologies AG & Co. KG Master cylinder or slave cylinder and path measuring device
DE102012221008A1 (en) 2011-12-14 2013-06-20 Schaeffler Technologies AG & Co. KG Method for calibrating linear displacement measuring sensor of master cylinder for hydraulic operation of clutch system in motor car, involves generating switching point signal by sensor after reaching pressure threshold level
WO2014076190A2 (en) * 2012-11-16 2014-05-22 Lucas Automotive Gmbh Master brake cylinder arrangement with actuation detection for a motor vehicle brake system
CN111692156A (en) * 2020-05-15 2020-09-22 华为终端有限公司 Linear motor device and terminal device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20315735U1 (en) 2003-06-11 2003-12-18 Fte Automotive Gmbh & Co. Kg Axial position sensing device for piston in hydraulic clutch in motor vehicle, has flux-conducting element extending over range of relative axial positions of permanent magnet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20315735U1 (en) 2003-06-11 2003-12-18 Fte Automotive Gmbh & Co. Kg Axial position sensing device for piston in hydraulic clutch in motor vehicle, has flux-conducting element extending over range of relative axial positions of permanent magnet

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012214652A1 (en) 2011-09-16 2013-03-21 Schaeffler Technologies AG & Co. KG Master cylinder or slave cylinder and path measuring device
WO2013037342A1 (en) 2011-09-16 2013-03-21 Schaeffler Technologies AG & Co. KG Master or slave cylinder and displacement measuring device
DE102012221008A1 (en) 2011-12-14 2013-06-20 Schaeffler Technologies AG & Co. KG Method for calibrating linear displacement measuring sensor of master cylinder for hydraulic operation of clutch system in motor car, involves generating switching point signal by sensor after reaching pressure threshold level
WO2014076190A2 (en) * 2012-11-16 2014-05-22 Lucas Automotive Gmbh Master brake cylinder arrangement with actuation detection for a motor vehicle brake system
WO2014076190A3 (en) * 2012-11-16 2014-09-04 Lucas Automotive Gmbh Master brake cylinder arrangement with actuation detection for a motor vehicle brake system
US9797417B2 (en) 2012-11-16 2017-10-24 Lucas Automotive Gmbh Master brake cylinder arrangement with actuation detection for a motor vehicle brake system
CN111692156A (en) * 2020-05-15 2020-09-22 华为终端有限公司 Linear motor device and terminal device
CN111692156B (en) * 2020-05-15 2022-08-09 华为终端有限公司 Linear motor device and terminal device

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