EP2118525A1 - Mécanisme avec un dispositif détecteur de vitesse de rotation - Google Patents

Mécanisme avec un dispositif détecteur de vitesse de rotation

Info

Publication number
EP2118525A1
EP2118525A1 EP08717311A EP08717311A EP2118525A1 EP 2118525 A1 EP2118525 A1 EP 2118525A1 EP 08717311 A EP08717311 A EP 08717311A EP 08717311 A EP08717311 A EP 08717311A EP 2118525 A1 EP2118525 A1 EP 2118525A1
Authority
EP
European Patent Office
Prior art keywords
transmission
sensor
sensor arm
speed
rotational speed
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.)
Withdrawn
Application number
EP08717311A
Other languages
German (de)
English (en)
Inventor
Kim Führer
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP2118525A1 publication Critical patent/EP2118525A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/38—Inputs being a function of speed of gearing elements
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox

Definitions

  • the present invention relates to a transmission, in particular for a motor vehicle, with a Drehiereabgriffs worn according to the closer defined in the preamble of claim 1 Art.
  • DE 103 47 494 A1 describes a device in which the torque is to be determined on transmission shafts.
  • the device comprises for this purpose a transmission shaft to which a tachometer gear is rotatably mounted, wherein the tachometer gear in turn is associated with a fixed speed sensor.
  • the teeth of the tachometer gear generate when passing the speed sensor electrical impulses, which are fed to a corresponding evaluation unit.
  • the non-prepublished application of the applicant with the file reference 10 2006 034 946 discloses a sensor module in an automated switching system in which various sensors are arranged.
  • the sensor module is designed such that it can be attached via suitable fastening elements to suitable fastening points in the automated switching system.
  • the sensor module has rotational speed sensors, via which the rotational speeds of a sliding sleeve, which is rotationally fixedly and axially displaceably arranged on a transmission main shaft, and of a transmission can be detected.
  • the speed sensors are positioned here by means of a long sensor arm directly on the sliding sleeve or the encoder wheel.
  • a disadvantage here is that a long freely hanging sensor arm is needed to position the speed sensors.
  • the sensor arm could collide with other transmission components and be damaged, or it must be provided in the design of the transmission so much space that this can not be done.
  • an arrangement for determining the rotational speed of a transmission shaft has a rotatably connected to the transmission shaft speed sensor and a fixed speed sensor, by means of which the speed can be tapped at the speed sensor.
  • the speed sensor is provided on the circumference of an axially displaceable and non-rotatably mounted on the transmission shaft sliding sleeve and the speed sensor is arranged on a sensor arm such that the rotational speed can be tapped in the radial direction of the tachometer.
  • a Radsatznavieresensor is provided on the sensor arm, by means of which the speed of a loose gear can be tapped from the same at the teeth.
  • the speed sensors are arranged here on a long sensor arm and are positioned directly on the speed sensors.
  • the sensor arm begins to oscillate itself with external vibration excitation and by these vibrations, a faulty speed signal can arise.
  • the sensor arm must be placed in a shift fork open- dipping, wherein the shift fork arms of the shift fork must be designed asymmetrically and the shift fork can not be massively manufactured.
  • the transmission must be switched to a specific gear, so that the sensor arm can be mounted or dismounted.
  • the wheelset speed is tapped by a gear which is mounted with great play on a drive shaft. Tumbling movements of the shaft or of the toothed wheel can falsify the measuring signal of the wheelset speed sensor.
  • an intelligent sensor must be used here, which outputs a correct signal despite the wobbling movements.
  • such a sensor is much more expensive than a conventional speed sensor without additional evaluation.
  • the present invention has for its object to present a transmission with a Drehiereabgriffs worn, through which a safe speed detection is made possible and by which the disadvantages of the prior art are eliminated.
  • the object underlying the invention is achieved by a, including the characterizing features of the main claim exhibiting, generic transmission with a Drehiereabgriffs worn.
  • the transmission according to the invention which can be used for example in a motor vehicle, has a transmission housing and a speed tap device.
  • the Drehiereabgriffs comprises at least one rotatably connected to a transmission shaft speed sensor and at least one fixed speed sensor, which is arranged on a sensor arm and by means of which the speed of the transmission shaft can be tapped at the speed sensor.
  • the sensor arm is attached to the transmission housing and extends through a
  • a is here to understand that space within the gear housing in which the adjusting means of the transmission circuit are, such as shift rails, Shifters and sliding sleeves of a dog clutch.
  • the speed sensor may be, for example, a Hall effect sensor or an induction sensor, and the transmission shaft may be a drive shaft, a countershaft, a main shaft or an output shaft of the transmission.
  • the speed sensor is provided for example on the circumference of a sliding sleeve, which is arranged axially displaceable and rotationally fixed to the transmission shaft.
  • spur gears can be connected to their shafts via corresponding claw-type short teeth, which are located, for example, laterally on the spur gears.
  • such coupling devices can be supplemented with synchronizing and Sperrsynchronisier sensibleen.
  • the sensor arm having the speed sensor and the gear housing are designed such that the sensor arm can be fastened to at least two fastening points on the gear housing.
  • the two ends of the sensor arm can be firmly connected to the transmission housing.
  • the sensor arm is no longer freely suspended in the transmission housing, whereby the sensor arm in the transmission housing can not swing freely.
  • the speed sensor can securely tap the speed at the speed sensor and a collision between the sensor arm and existing transmission elements caused by an external vibration excitation can be safely avoided.
  • the first fastening point is formed by a fixedly arranged on the gear housing device and connectable to the device end of the sensor arm has a corresponding to this device shape. This ensures that the connection of the sensor arm with the first attachment point is easy and safe to produce.
  • the end of the sensor linkable with the device is arms so brought to the device that this is connected to the device and thus fixed to the gear housing.
  • the end of the sensor arm which can be connected to the device can be fork-shaped and the device can have a corresponding contour.
  • the device receiving the end of the sensor arm may, for example, be formed in one piece from the transmission housing.
  • the second attachment point can be realized by a fixed connection of the sensor arm and the gear housing, wherein this connection is preferably made only when the connectable to the first attachment point end of the sensor arm is fixed to the transmission housing.
  • the second attachment point can be realized for example by a screw connection. It is also conceivable that the sensor arm is firmly connected to the transmission housing via at least one fastening clip.
  • the end of the sensor arm which has the shape corresponding to the first attachment point, and arranged in or on the sensor arm speed sensor for detecting the rotational speed of the transmission shaft are arranged close to each other.
  • the thus small distance between the first attachment point and the speed sensor ensures that the speed sensor undergoes no natural vibration at an external vibration excitation and the speed is thus tapped off safely on the speed sensor. The risk of error signal generation by swinging back and forth of the sensor arm is thus eliminated.
  • the sensor arm is designed in such a way and the speed sensor in or on the sensor arm arranged such that the speed of the transmission shaft can be tapped in the radial direction of the speed sensor.
  • the speed sensor is formed by an external toothing of a rotatably connected to the transmission shaft sliding sleeve, which can be brought in the axial direction of the transmission shaft in a neutral position, a first coupling position and a second coupling position.
  • the rotational speed sensor is arranged such that the rotational speed in the neutral position, the first clutch position and the second clutch position of the sliding sleeve on the external toothing can be reliably tapped off. In this way, the external teeth of the sliding sleeve can be used in unmodified form as a speed sensor.
  • the sensor arm and existing switching elements of the transmission are designed such that a collision-free assembly or disassembly process of the sensor arm is ensured.
  • the sensor arm can be guided past a shift fork for actuating the sliding sleeve and can be meshed into the first attachment point on the transmission housing.
  • the switching elements and the sensor arm are preferably designed such that the sensor arm can be assembled or disassembled in each switching state of the transmission.
  • the shift fork for this purpose may be slightly symmetrical.
  • the mechanical properties of the asymmetrically formed shift fork such as the stability or rigidity, can be influenced by a massive design of the shift fork accordingly.
  • the sensor arm has a second speed sensor, for example a wheelset speed sensor, by means of which the speed of a further transmission element can be tapped off.
  • a second speed sensor for example a wheelset speed sensor
  • the Speed sensors can be arranged or injected on or in the sensor arm.
  • the further gear element is a fixed gear on a second gear, which serves as a speed sensor, wherein the rotational speed of the gear and thus the rotational speed of the second gear shaft can be tapped by the Radsatznavieresensor on the toothing of the gear.
  • the wheelset speed sensor may in this case be arranged such that the rotational speed of the wheelset can be tapped off in the radial direction of the gearwheel fixedly arranged on the second transmission shaft.
  • the sensor arm and the Radsatztextieresensor can be designed and arranged such that the rotational speed of the wheelset can be tapped in the axial direction of the teeth of the gear fixed to the second gear shaft.
  • the second transmission shaft is a very well mounted in the transmission housing shaft.
  • the speed sensor for the Radsatznavieresensor be avoided, which can be used for detecting the Radsatznaviere a cost-effective speed sensor without additional evaluation.
  • the sensor arm having the rotational speed sensors is part of a sensor module, wherein the end of the sensor arm remote from the first actuating point is firmly connected to the housing of the sensor module.
  • the other end of the sensor arm in turn has a shape corresponding to the first attachment point and can thus be firmly fixed to the transmission housing.
  • the second attachment point is in this case realized by a fixed connection between the housing of the sensor module and the transmission housing.
  • the transmission shaft is a main shaft and the second transmission shaft is a countershaft. formed wave of the transmission, wherein the main shaft can be mounted floating between two countershafts.
  • the single figure shows a section of a transmission 1, which can be used for example in a motor vehicle.
  • the transmission 1 has a transmission housing 7 and a Drehiereabgriffs worn.
  • the Drehiereabgriffs worn here includes a non-rotatably connected to a transmission shaft 11 speed sensor 8 and a fixed speed sensor 4, which is arranged on a sensor arm 2 and by means of which the speed of the gear shaft 1 1 can be tapped at the speed sensor 8.
  • the sensor arm 2 has a second rotational speed sensor 3, which is designed here as a wheel set speed sensor, by means of which the rotational speed of a toothed wheel 13 fixedly arranged on a second gear shaft 12 is detected at the toothing 14 thereof.
  • the gear shaft 1 1 is shown here as the main shaft and the second gear shaft 12 is shown here as a countershaft of the transmission 1.
  • the sensor arm 2 and the Radsatzdusieresensor 3 are here designed and arranged such that the speed of the wheelset can be tapped in the axial direction of the teeth 14 of the gear 13 fixedly mounted on the countershaft 12. Since the countershaft 12 is a very well mounted in the transmission housing shaft, no tumbling movements of the countershaft 12 and the gear 13 occur, which can be used for detecting the Radsatznaviere a cost-effective speed sensor 3 without additional evaluation.
  • the sensor arm 2 extends through a
  • the adjusting means of the transmission circuit are, such as shift rails 17, shift forks 10 and sliding sleeves 9 a claw circuit.
  • the speed sensor 3, 4 having sensor arm 2 is attached to two attachment points 5, 6 on the transmission housing 7.
  • the first attachment point 5 is formed by a fixedly arranged on the gear housing 7 device 15 and connectable to the device 15 end of the sensor arm 2 has a corresponding to this device 15 form.
  • the connectable to the device 15 end of the sensor arm 2 is formed here fork-shaped.
  • the second attachment point 6 is realized here by a screw 16, through which the device 15 remote from the end of the sensor arm 2 is fixedly connected to the transmission housing 7.
  • the end of the sensor arm 2, which has the shape corresponding to the device 15, and arranged in or on the sensor arm 2 speed sensor 4 for detecting the rotational speed of the main shaft 1 1 are arranged close to each other, thereby ensuring that the speed sensor 4 despite an outer Vibration excitation experiences no natural vibration.
  • the sensor arm 2 is formed in such a way and the speed sensor 4 is arranged in or on the sensor arm 2 such that the rotational speed of the main shaft 1 1 in the radial direction and laterally to the main shaft 11 at the speed sensor 8 can be tapped.
  • the speed sensor 8 is formed here by an external toothing of a rotatably connected to the main shaft 1 1 sliding sleeve 9, which in the axial direction of the main shaft 1 1 in a neutral position, a first coupling position and a second coupling position can be brought.
  • the sensor arm 2 and existing switching elements 9, 10, 17 of the transmission 1 are designed such that a collision-free assembly and disassembly process of the sensor arm 2 is ensured and switching operations are collision-free feasible.
  • the sensor arm 2 is guided past the shift fork 10, which serves to actuate the sliding sleeve 9, and is inserted into the first attachment point 5 or the device 15 on the transmission housing 7 and then secured by the screw connection 16 to the transmission housing 7 connected.
  • the shift fork 10 is slightly asymmetrical in this case, so that the sensor arm 2 can be assembled or disassembled in each switching state of the transmission 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

La présente invention concerne une transmission (1) comportant un carter de transmission (7) et un dispositif détecteur de vitesse de rotation, qui présente un capteur de vitesse (8) solidaire en rotation avec un arbre de transmission (11) et un détecteur de vitesse de rotation (4) fixe, lequel est disposé dans un bras de capteur (2) et permet de prélever la vitesse de rotation de l'arbre de transmission (11) sur le capteur de vitesse (8). Le bras de capteur (2) présentant le détecteur de vitesse de rotation (4) est apte à être fixé à au moins deux emplacements de fixation (5, 6) sur le carter de mécanisme (7).
EP08717311A 2007-03-13 2008-03-03 Mécanisme avec un dispositif détecteur de vitesse de rotation Withdrawn EP2118525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710011897 DE102007011897A1 (de) 2007-03-13 2007-03-13 Getriebe mit einer Drehzahlabgriffseinrichtung
PCT/EP2008/052546 WO2008110472A1 (fr) 2007-03-13 2008-03-03 Mécanisme avec un dispositif détecteur de vitesse de rotation

Publications (1)

Publication Number Publication Date
EP2118525A1 true EP2118525A1 (fr) 2009-11-18

Family

ID=39496151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08717311A Withdrawn EP2118525A1 (fr) 2007-03-13 2008-03-03 Mécanisme avec un dispositif détecteur de vitesse de rotation

Country Status (3)

Country Link
EP (1) EP2118525A1 (fr)
DE (1) DE102007011897A1 (fr)
WO (1) WO2008110472A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9644735B2 (en) 2014-11-24 2017-05-09 Ford Global Technologies, Llc Powertrain control based on bearing speed

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008054666A1 (de) * 2008-12-15 2010-06-17 Zf Friedrichshafen Ag Anordnung zur Ermittlung der Drehzahl einer schwimmend gelagerten Hauptwelle in einem Mehrgruppengetriebe
GB2524819B (en) 2014-04-04 2018-05-23 Jaguar Land Rover Ltd Speed sensor of a vehicle transmission

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739672B1 (fr) * 1995-10-06 1997-10-31 Renault Dispositif de prise d'information de vitesse sur un arbre primaire de boite de vitesses mecanique
DE19632715A1 (de) * 1996-08-14 1998-02-19 Fag Oem & Handel Ag Wälzlagerung mit einer Drehzahlerfassungseinrichtung
DE19703488A1 (de) * 1997-01-31 1998-08-06 Porsche Ag Verfahren zur Messung der Relativbewegung von zumindest zwei Bauteilen
DE10118387A1 (de) * 2001-04-12 2002-11-07 Valeo Auto Electric Gmbh Getriebe, insbesondere Schneckengetriebe
DE10347494A1 (de) 2003-10-13 2005-06-09 Zf Friedrichshafen Ag Verfahren und Vorrichtung zur Bestimmung des Drehmoments an Getriebewellen
DE102005021572B4 (de) * 2005-05-10 2010-01-07 Sauer-Danfoss (Neumünster) GmbH & Co OHG Hydraulische Pumpe oder hydraulischer Motor mit einem Drehzahlsensor
DE102006023554A1 (de) 2006-05-19 2007-11-22 Zf Friedrichshafen Ag Ermittlung der Drehzahl einer Getriebewelle
DE102006034946A1 (de) 2006-07-28 2008-01-31 Zf Friedrichshafen Ag Automatisiertes Schaltsystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008110472A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9644735B2 (en) 2014-11-24 2017-05-09 Ford Global Technologies, Llc Powertrain control based on bearing speed

Also Published As

Publication number Publication date
DE102007011897A1 (de) 2008-09-18
WO2008110472A1 (fr) 2008-09-18

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