EP2021658A1 - Boîte de vitesses équipée d'un dispositif de détection de la vitesse de rotation - Google Patents

Boîte de vitesses équipée d'un dispositif de détection de la vitesse de rotation

Info

Publication number
EP2021658A1
EP2021658A1 EP07728474A EP07728474A EP2021658A1 EP 2021658 A1 EP2021658 A1 EP 2021658A1 EP 07728474 A EP07728474 A EP 07728474A EP 07728474 A EP07728474 A EP 07728474A EP 2021658 A1 EP2021658 A1 EP 2021658A1
Authority
EP
European Patent Office
Prior art keywords
speed sensor
transmission
transmission according
shaft
transmission shaft
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Withdrawn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
EP07728474A
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 EP2021658A1 publication Critical patent/EP2021658A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • 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
    • 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
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19233—Plurality of counter shafts

Definitions

  • the present invention relates to a transmission, in particular for a motor vehicle, with a Drehiereabgriffs adopted having a non-rotatably connected to a Getriebewelie tachometer and a fixed speed sensor mitteis the speed of the gearwheel can be tapped at the tachometer.
  • DE 198 14 758 A1 ailgemei ⁇ a device for detecting the speed of a shaft.
  • the known device has a non-rotatably connected to the Welie signal generator, which is formed in the manner of a gear wherein the teeth of the gear jeweiis have a steep and a flat Zahnfianke.
  • an analogue Hall-effect sensor is provided, which picks up the rotational speed in the radial direction on the circumference of the toothed wheel, aiso on the teeth. Thanks to the different slope slopes of the two Zahnfianken it is possible, the speed! and to determine the direction of rotation of the shaft with only one sensor and at a constant refresh rate, if the shaft rotates at a very low speed.
  • the known device comprises for this purpose a transmission shaft to which a tachometer gear is rotatably mounted, wherein the tachometer gear turn a associated with fixed speed sensor, which picks up the speed in the radial direction on the circumference of the tachometer gear, so on the teeth.
  • the teeth of the tachometer gear generate when driving past the speed sensor electrical impulses, which are fed to a corresponding evaluation unit.
  • the present invention is therefore based on the object to provide a transmission with a Drehzahiabgriffs adopted, which also in swimming transmission gear units or, in the case of wear parts, with a large axial play! always ensures a safe tapping the speed.
  • the transmission of the invention which can be used for example in a motor vehicle, has a Drehzahiabgriffs coupled.
  • the Drehiereabgriffs comprises a rotatably connected to a transmission shaft speed sensor and a fixed speed sensor, by means of which the speed of the transmission shaft can be tapped at the speed sensor.
  • the speed sensor may, for example, be a hail-effect sensor, an induction sensor or the like.
  • the speed sensor extends radially outward into at least one guide which reduces the axial play of the speed sensor.
  • a guide may be provided for example on the transmission housing or another transmission part.
  • the invention has the advantage that the Axialspiei the speed sensor is limited by the guide, so that the speed sensor is held and guided even in a particularly large Axialspiei the gear shaft in a range in which the fixed speed sensor can pick up the speed of the tachometer.
  • the guide cooperates with the speed sensor so that the Axiaispiei the speed sensor can be reduced to a predetermined value.
  • the predetermined value can be adjusted by appropriate design of the guide to the properties of the speed sensor.
  • the predetermined value is therefore smaller than a predetermined tolerance value of the speed sensor. Under the predetermined tolerance value, for example, the maximum allowable axial clearance of the speed sensor can be understood, in which still a tapping by the speed sensor is possible. In this embodiment, a reliable and secure tapping the speed is always ensured at the speed sensor
  • the predetermined value is smaller than the axial play of Geretewelie. In this way, the Drehiereabgriffs shark can be used in particular in transmissions whose Geretewelie is floating or has a particularly large axial play.
  • the speed sensor is arranged in a further embodiment of the transmission according to the invention axially displaceable on the transmission shaft
  • this comprises at least one second Gereteweile, wherein the Guide is designed as a circumferential groove in or on the second transmission shaft.
  • an already existing transmission part is used which in addition - if it is, for example, a countershaft - is arranged in the vicinity of the first transmission shaft, so that the speed sensor does not have to have a particularly large diameter, up to the guide in the form of the circumferential groove to get.
  • the second Gereteweile in an advantageous embodiment of the transmission according to the invention has a lower Axialspie! as the first gear shaft.
  • the circumferential groove in a particularly preferred embodiment of the transmission according to the invention on two Nutfianken which are formed by the mutually facing sides of two adjacent gears on the second Getriebeweile.
  • Such a groove is given in any case at two adjacent gears when they are spaced apart, so that a processing of the transmission shaft, such as 2.
  • the speed sensor is oriented such that the speed can be tapped in the axial direction of the speed sensor. Since the Abgreif availability of the speed at the speed sensor in such an embodiment depends in particular on the axial play of the speed sensor, the invention reduction of Axiaispiels is particularly advantageous in this embodiment.
  • the speed sensor is in a special preferred embodiment of the transmission according to the invention as a speed sensor disc formed on its side facing the speed sensor side recesses.
  • the depressions may be arranged in a circle one behind the other and rotated past the rotational speed sensor so that corresponding pulses are generated in the rotational speed sensor.
  • the recesses are spaced in a further preferred embodiment of the transmission according to the invention from the edge of the tachometer disc. Consequently, the depression does not pass over into the edge of the rotational speed sensor, as is the case with an outwardly facing tooth space.
  • the rotational speed sensor disc can thus also be guided more smoothly in the guide on the side facing the rotational speed sensor; moreover, a collision between the rotational speed sensor Edge of the recesses and the toothing of the gear on the second gear shaft largely excluded.
  • the speed sensor disc is made of a perforated disc and a cover plate which are connected flat to each other.
  • the edges or walls of the recesses are thus predetermined by the perforated disc.
  • the cover plate forms the bottom of the recesses.
  • the hole and cover plate can be welded or soldered together, for example.
  • This embodiment has two major advantages. On the one hand, a particularly flat tachometer disc can be generated, so that the overall transmission length is only marginally increased. On the other hand, the production cost is lower than in a tachometer disc, in which the recesses would have to be introduced into a single, thin disc blank.
  • one of the groove flanks is formed exclusively by the teeth of a gear wheel, wherein the side facing the speed sensor side of the speed sensor disc faces this groove flank. Since a groove flank formed by the teeth of the toothed wheel can lead to increased wear on the tachometer disc, it makes sense to turn this groove flank to the more wear-resistant closed side of the tachometer disc.
  • one of the groove flanks is formed in a further advantageous embodiment of the transmission according to the invention at least partially by a closed portion of a gear, wherein the speed sensor facing side of the speed sensor disc faces this groove flank and the recesses in the speed sensor disk the closed section are arranged opposite one another.
  • the opposite arrangement relates only to those recesses which are currently rotated in the circumferential groove.
  • Fig. 1 is a schematic representation of an embodiment of the
  • Fig. 2 is a plan view of the transmission of Fig. 1 in the region of
  • FIG. 3 is a side view of the transmission of FIGS. 1 and 2 in the region of the rotary tooth tapping device and FIG. 3
  • Fig. 4 is a front view of the speed sensor disc from the
  • Fig. 1 shows a schematic illustration of an embodiment of the transmission 1 for a motor vehicle.
  • the transmission 1 is an equiaxed transmission with a drive shaft 2, a main shaft 3 and an output shaft 4, which are arranged one behind the other lying on an axis 5.
  • the main shaft 3 is connected to the output shaft 4 via a planetary gear 6, which is only indicated schematically.
  • There are also two countershafts 7, 8 are provided, which extend parallel to the drive shaft 2, the main white 3 and the output shaft 4 along two axes 9, 10.
  • the main shaft 3 is geiagert with large axial and radial clearance between the drive shaft 2 and the output shaft 4.
  • the transmission 1 further comprises a Gefriebegepuruse 11 through which the ends of the drive and output shafts 2, 4 facing away from the main shaft 3 extend outwards.
  • a drive gear 12, 13 is fixed, which is in engagement with a driven gear 14 of the drive shaft 2, so that the countershafts 7, 8 can be driven by the drive shaft 2.
  • 7 and 8 further fixed gears 15, 16 and 17, 18 are provided on the countershaft, which are in engagement with the idler gears 19, 20 on the Hauptwelie 3.
  • the fixed gears 15, 17 and the idler gear 19 form the wheelset of the second gear, while the fixed gears 16, 18 and the idler gear 20 form the wheel of the first gear.
  • at least one switchable coupling device is also provided on the main shaft 3, the illustration of which has been omitted for reasons of clarity.
  • the transmission 1 also has a speed tapping device for determining the rotational speed of the main shaft 3.
  • the Drehzahiabgriffs essentially comprises a tachometer 21 which is rotatably connected to the main shaft 3 and disposed between the Los LEGOdonn 19, 20, and a fixed speed sensor 22 which is attached via a support arm 23 (Fig. 3) to the Gefriebegepuruse 11 ,
  • the speed of the main shaft 3 can be tapped by means of the speed sensor 22 on the speed sensor 20, wherein the pulses generated in the speed sensor 22 are passed via a line 24 to an evaluation unit 25.
  • the speed sensor 21 is formed in the illustrated embodiment as a speed sensor disk 26.
  • the speed sensor disk 26 has recesses 27 in its side facing the speed sensor 22. These recesses 27 are circular and spaced apart in the said side of the Drehieregeberschei- 28 provided, as can be seen in particular in Fig. 4, which shows a front view of the speed sensor disk 26.
  • the depressions 27 are arranged at a predetermined distance from the edge 28 of the rotary indexing disk 26, i. h, these do not go into the edge 28, as is the case with tachometer gears.
  • the tachometer disc 26 has a central opening 29 which allows a rotationally fixed attachment to the main shaft 3.
  • the Drehzahigeberin 26 is made of a perforated disc 30 and a cover 31 hergesteilt, which are connected flat to each other, as can be seen in Figs. 2 and 3. With such a rotational speed disc, the recess flanks are thus formed by the edges of the holes in the perforated disc 30 and the bottom of the recess by the cover 31. This enables the cost-effective production and provision of particularly thin tachometer discs, whereby a lower overall transmission length can be achieved.
  • the Drehzahigeberin 26 is disposed axially displaceably on the main shaft 3, as illustrated by the double arrow A.
  • the Drehzahigeberefficiency 26 is connected to the main shaft 3 so that it can be inclined relative to the longitudinal axis 5 of the main shaft 3 (double arrow B).
  • Such a connection with the above-mentioned degrees of freedom can be achieved, for example, by the diameter of the opening 29 in the rotary indexing disk 26 being greater than the diameter of the main shaft 3, which allows said inclinability, while a passable spring (not shown), which extends on the one hand in the main field 3 and on the other hand in a lateral recess 32 in the opening 29 of the tachometer disc 26, causes a rotationally fixed connection.
  • the fixed gears 15 and 16 are axially spaced from each other fixed to the Vorgeiegewelle 7, so that between the fixed gears 15, 16, a guide 33 is formed in the form of a circumferential groove 34.
  • a guide 33 is formed in the form of a circumferential groove 34.
  • the circumferential groove 34 includes a first groove flank 37 which is formed from the side of the fixed gear 16.
  • the fixed gear 16 in this case has such a small diameter that the first groove flank 37 is formed exclusively by the side of the toothing 38 of the Fesfzahnrades 18.
  • the circumferential groove 34 further has a second groove flank 39 opposite the first groove flute 37, which is formed by the side of the fixed gear 15, wherein the second groove flank 39 extends both from the side of the toothing 40 and from a close-to-axis closed portion 41 of the fixed gear wheel 15 is formed.
  • the groove base 42 of the circumferential groove 34 is formed by the outer surface of the Vorgeiegewelie 7
  • the speed sensor disc 26 extends radially outward starting from the main shaft 3 and dips at the edge into the two circumferential grooves 34, 38, so that the axial play of the rotational speed sensor disc 27 is limited by the two groove flanks 37, 38 b2w. is reduced.
  • the Axialspie! the speed sensor disc 26 relative to a stationary part of the transmission, such as the speed sensor 22, is thus reduced to a predetermined value resulting from the axial play between the flanks 37, 38 and the axial play of the countershaft 7 and 8, respectively, wherein the Vorgeiegewelien 7, 8 are stored with low backlash and have a lower Axiaispiel than the floating supported Hauptweil 3.
  • the predetermined value of the axial length of the rotational speed disc 28 is set to be less than a predetermined tolerance value of the rotational speed sensor 22. Also, the predetermined value of the axial displacement of the rotational speed sensor disc 26 is smaller than the axial distance of the main angle 3.
  • the side of the tachometer disc 28 that is to say the side formed by the cover disc 31 and closed, faces the first groove flank 37.
  • the axial clearance of the rotational speed shaper 26, in particular in its edge region is limited to a predetermined value by the guides 33, 35. decreased value, wherein the inclinability of the tachometer disc 26 relative to the axis 5 of the main shaft 3 causes no loads on the tachometer disc 28 and the guides 33, 35 are applied.

Abstract

La présente invention concerne une boîte de vitesses équipée d'un dispositif de détection de la vitesse de rotation, lequel dispositif comprend un transmetteur de vitesse de rotation (21), solidaire en rotation d'un arbre de boîte de vitesses (3), et un capteur de vitesse de rotation fixe, au moyen duquel la vitesse de rotation de l'arbre de boîte de vitesses (3) peut être détectée sur le transmetteur de vitesse de rotation (21). Ce transmetteur de vitesse de rotation (21) s'étend radialement vers l'extérieur dans au moins un élément de guidage (33, 35) réduisant le jeu axial du transmetteur de vitesse de rotation (21). La boîte de vitesses selon l'invention garantit une détermination particulièrement fiable de la vitesse de rotation de l'arbre de boîte de vitesses (3).
EP07728474A 2006-05-19 2007-04-25 Boîte de vitesses équipée d'un dispositif de détection de la vitesse de rotation Withdrawn EP2021658A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006023553A DE102006023553A1 (de) 2006-05-19 2006-05-19 Getriebe mit einer Drehzahlabgriffseinrichtung
PCT/EP2007/054018 WO2007134934A1 (fr) 2006-05-19 2007-04-25 Boîte de vitesses équipée d'un dispositif de détection de la vitesse de rotation

Publications (1)

Publication Number Publication Date
EP2021658A1 true EP2021658A1 (fr) 2009-02-11

Family

ID=38326130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07728474A Withdrawn EP2021658A1 (fr) 2006-05-19 2007-04-25 Boîte de vitesses équipée d'un dispositif de détection de la vitesse de rotation

Country Status (5)

Country Link
US (1) US20090188336A1 (fr)
EP (1) EP2021658A1 (fr)
JP (1) JP2009537766A (fr)
DE (1) DE102006023553A1 (fr)
WO (1) WO2007134934A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102013221859A1 (de) 2013-10-28 2015-04-30 Schaeffler Technologies AG & Co. KG Druckstück für Spannschienen zur Entlüftung und Ölanspritzung von Ketten
DE102013221857A1 (de) 2013-10-28 2015-04-30 Schaeffler Technologies Gmbh & Co. Kg Bohrung zur Entlüftung am eingepressten Druckstück bei Spannschienen

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DE102006023554A1 (de) * 2006-05-19 2007-11-22 Zf Friedrichshafen Ag Ermittlung der Drehzahl einer Getriebewelle
DE102008054666A1 (de) * 2008-12-15 2010-06-17 Zf Friedrichshafen Ag Anordnung zur Ermittlung der Drehzahl einer schwimmend gelagerten Hauptwelle in einem Mehrgruppengetriebe
JP5532727B2 (ja) * 2009-08-03 2014-06-25 サンスター技研株式会社 ブレーキディスク
DE102013011532B4 (de) 2013-07-10 2016-08-25 Audi Ag Drehzahlmessvorrichtung für ein Getriebe und Verfahren zur Drehzahlmessung
FR3032798A1 (fr) * 2015-02-13 2016-08-19 Peugeot Citroen Automobiles Sa Boite de vitesses pour vehicule automobile a capteur du regime de l'arbre primaire de cette boite
DE102016212429A1 (de) * 2016-07-07 2017-08-03 Magna powertrain gmbh & co kg Getriebe für ein Kraftfahrzeug

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013221859A1 (de) 2013-10-28 2015-04-30 Schaeffler Technologies AG & Co. KG Druckstück für Spannschienen zur Entlüftung und Ölanspritzung von Ketten
DE102013221857A1 (de) 2013-10-28 2015-04-30 Schaeffler Technologies Gmbh & Co. Kg Bohrung zur Entlüftung am eingepressten Druckstück bei Spannschienen

Also Published As

Publication number Publication date
JP2009537766A (ja) 2009-10-29
DE102006023553A1 (de) 2007-11-22
US20090188336A1 (en) 2009-07-30
WO2007134934A1 (fr) 2007-11-29

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