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WO1997046815A1 - Dispositif de selection et de passage de vitesses d'une boite de vitesses mecanique - Google Patents

Dispositif de selection et de passage de vitesses d'une boite de vitesses mecanique Download PDF

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Publication number
WO1997046815A1
WO1997046815A1 PCT/NL1997/000271 NL9700271W WO9746815A1 WO 1997046815 A1 WO1997046815 A1 WO 1997046815A1 NL 9700271 W NL9700271 W NL 9700271W WO 9746815 A1 WO9746815 A1 WO 9746815A1
Authority
WO
WIPO (PCT)
Prior art keywords
operating element
gearbox
axis
detection means
stationary part
Prior art date
Application number
PCT/NL1997/000271
Other languages
English (en)
Inventor
Roelof Jan Wind
Jan Hendrik Kievits
Original Assignee
Applied Power Incorporated
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 Applied Power Incorporated filed Critical Applied Power Incorporated
Priority to AU27146/97A priority Critical patent/AU2714697A/en
Publication of WO1997046815A1 publication Critical patent/WO1997046815A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • 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
    • F16H59/68—Inputs being a function of gearing status
    • F16H59/70—Inputs being a function of gearing status dependent on the ratio established

Definitions

  • the present invention relates to a device for selecting and engaging the gear of a mechanical gearbox for a motor vehicle in accordance with the preamble of claim 1.
  • a device of this kind is known, for example, from GB-2 214 248.
  • two potentiometers are provided for detecting the position of the operating element, which potentiometers each transmit a signal which is representative of the displacement of the operating element in the direction of the first axis and of the rotation of the operating element about the first axis, respectively.
  • the signals transmitted by the potentiometers are fed back to the control means, in order to control the valves of the hydraulic actuators of the known device.
  • the detection means of the known device which are realized using two potentiometers, have the drawback that they require a relatively large amount of space, are susceptible to faults, and require a mechanical coupling between the operating element and the potentiometers, which coupling is inevitably subject to mechanical wear and, as a result, will in the long term have adverse effects on the accuracy of the detection.
  • the object of the present invention is to eliminate the abovementioned drawbacks.
  • the present invention provides a device according to the preamble of claim 1, which is characterized in that the detection means comprise magnets which are arranged fixedly on the operating element and create a first magnetic field, having lines of force which extend substantially in the direction of the first axis, and a second magnetic field, having lines of force which extend substantially at right angles to the lines of force of the first magnetic field, and in that the detection means furthermore comprise a first Hall sensor and a second Hall sensor, which are arranged fixedly on the stationary part of the device and are respectively disposed so as to detect the first and the second magnetic fields.
  • the present invention therefore provides for the use of the Hall effect, which is known per se, for determining the position of the operating element of the device.
  • the use of the Hall effect makes it possible for there to be a gap between the Hall sensors, on the one hand, and the magnets, on the other hand, so that there can be no mechanical wear of the detection means during the service life of the device, and the accuracy of the detection means remains guaranteed throughout the service life.
  • the detection means provided according to the invention appear to be eminently suitable for operating in the adverse conditions which prevail in the region of a gearbox of a motor vehicle.
  • the invention provides for arranging the magnets and the Hall sensors on a part of the device which is situated in the interior of the gearbox.
  • the magnets are disposed in a common magnet support which can be mounted on the operating element, and the Hall sensors are disposed in a common Hall-sensor support which can be mounted on the stationary part of the device. This design is extremely compact.
  • Fig. 1 diagrammatically shows a cross-section of an exemplary embodiment of the device according to the invention
  • Fig. 2 shows the schematic diagram of the detection means of the device in Fig. 1.
  • FIG. 10 An exemplary embodiment of the device, which is indicated by the reference numeral 10, according to the invention is depicted extremely diagrammatically in Figure I.
  • the device 10 is intended to be arranged directly on a mechanical gearbox, which is known per se and is not shown, for a motor vehicle, and serves to select and engage the desired gear of the gearbox. With regard to its structure, the device 10 is largely identical to that in GB-2 214 248, for which reason a summary description of the corresponding parts is sufficient here.
  • the device 10 comprises a stationary part
  • the shaft 12 bears a finger 13 which is movable in a conventional H pattern, shown as 14, and can be coupled to a gear-change mechanism in the gearbox.
  • the shaft 12 is displaceable in the direction of its longitudinal axis, which displacement corresponds to a displacement along neutral line N of the H pattern of the gearbox, and can assume three positions in that direction. In each of these three positions, the shaft 12 is rotatable over a certain angle in two opposite directions about its longitudinal axis, which rotation of the shaft 12 corresponds to the engagement of a desired gear of the gearbox.
  • the device 10 comprises hydraulic actuator means.
  • the hydraulic actuator means comprise a first double-acting piston-cylinder assembly 15, which is aligned with the shaft 12, and a second double- acting piston-cylinder assembly 16, in a direction perpendicular to the shaft 12.
  • hydraulic valve means (not shown) , which are preferably electromagnetically actuated, are present, as well as a diagrammatically indicated electronic control device 18 for effecting the desired displacement of the shaft 12 in the direction of its longitudinal axis and the desired pivoting of the shaft 12 about its longitudinal axis.
  • the device furthermore comprises detection means 20 for detecting the actual position of the shaft 12 with respect to the stationary part 11 of the device 10 and for providing corresponding feedback signals for the control device 18.
  • the detection means comprise an annular magnet support 21, which is arranged fixedly on the shaft 12, and a bush-like Hall- sensor support 22, which is arranged fixedly on the stationary part 11 of the device 10.
  • the magnet support 21 bears a first permanent magnet 23 and a second permanent magnet 24, which respectively create a first magnetic field, having lines of force which extend substantially in the direction of the longitudinal axis of the shaft 12, and a second magnetic field, having lines of force which extend substantially at right angles to the lines of force of the first magnetic field.
  • the Hall-sensor support 22 bears a first Hall sensor 25 and a second Hall sensor 26, which are respectively disposed so as to detect the first and the second magnetic fields created by the two magnets 23 and 24.
  • the detection means 20 also comprise an electronic circuit 27 for the Hall sensors 25 and 26, which circuit supplies a first output signal which is representative of the position of the shaft 12 viewed in its longitudinal direction and a second output signal which is representative of the position of the shaft 12 in the direction of the pivoting about its longitudinal axis.
  • the above-described detection means 20 are compact, accurate and easy to mount. A further important advantage is that they are resistant to the adverse conditions which prevail in the region of, or even in, a gearbox.
  • a preferred embodiment provides for the magnet support 21 and the Hall-sensor support 22 to be arranged on part of the shaft 12 which comes to lie in the interior of the gearbox; this location is indicated in Figure 1 by 30.
  • the detection means 20 described are then preferably accommodated in a space which is closed by seals, so that no gearbox oil passes into the gap between the magnet support 21 and the Hall-sensor support 22. This is important because gearbox oil contains metal particles which could interfere with the magnetic field of the detection means.
  • the closed space may be filled with another liquid (oil) .
  • Disposing the detection means in the gearbox means that the device 10 takes up less space outside the contours of the gearbox, which is particularly important when using a device of this kind in passenger vehicles.

Landscapes

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

Abstract

Un dispositif de sélection et de passage de la vitesse voulue d'une boîte de vitesse mécanique de véhicule automobile comprend une partie fixe (11), laquelle est destinée à être agencée de manière fixe sur le carter de la boîte de vitesses, ainsi qu'un élément de commande mobile (12) pouvant être couplé à un mécanisme de changement de vitesses de la boîte de vitesses. L'élément de commande peut être déplacé le long d'un premier axe, son déplacement correspond à un déplacement le long de la ligne du point mort (N) de la boîte de vitesses, et il tourne autour du premier axe, sa rotation correspondant au passage de la vitesse voulue. Le dispositif comprend également des moyens de détection (21, 22) destinés à détecter la position effective de l'élément de commande par rapport à la partie fixe du dispositif, et à transmettre des signaux de retour correspondants au moyen de commande. Les moyens de détection comprennent des aimants (23, 24) agencés de manière fixe sur l'élément de commande et créant un premier champ magnétique présentant des lignes de force s'étendant sensiblement dans le sens du premier axe, ainsi qu'un second champ magnétique présentant des lignes de force s'étendant sensiblement perpendiculairement aux lignes de force du premier champ magnétique. En outre, le moyen de détection comprend un premier détecteur (25) à effet de Hall, ainsi qu'un second détecteur (26) à effet de Hall, lesquels sont agencés de manière fixe sur la partie fixe du dispositif est sont disposés respectivement de manière à détecter les premier et second champs magnétiques.
PCT/NL1997/000271 1996-06-07 1997-05-15 Dispositif de selection et de passage de vitesses d'une boite de vitesses mecanique WO1997046815A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27146/97A AU2714697A (en) 1996-06-07 1997-05-15 Device for selecting and engaging the gear of a mechanical gearbox

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1003299 1996-06-07
NL1003299A NL1003299C2 (nl) 1996-06-07 1996-06-07 Bedieningsinrichting voor het kiezen en inschakelen van de versnelling van een mechanische versnellingsbak.

Publications (1)

Publication Number Publication Date
WO1997046815A1 true WO1997046815A1 (fr) 1997-12-11

Family

ID=19762986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1997/000271 WO1997046815A1 (fr) 1996-06-07 1997-05-15 Dispositif de selection et de passage de vitesses d'une boite de vitesses mecanique

Country Status (3)

Country Link
AU (1) AU2714697A (fr)
NL (1) NL1003299C2 (fr)
WO (1) WO1997046815A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315526B (en) * 1996-07-25 2001-02-14 Luk Getriebe Systeme Gmbh Method for the function monitoring of a motor vehicle gearbox and motor vehicle for use with the method
WO2001051893A1 (fr) * 2000-01-13 2001-07-19 Continental Teves Ag & Co. Ohg Capteur de deplacement lineaire et utilisation en tant que dispositif d'actionnement de vehicules motorises
EP1843063A1 (fr) * 2006-04-06 2007-10-10 Magneti Marelli Powertrain S.p.A. Actionneur avec capteur de position sans contact
EP1882871A1 (fr) * 2006-07-26 2008-01-30 Sc2N Boîte de vitesses d'un véhicule automobile comportant un capteur magnétique à effet Hall
DE102008036107A1 (de) * 2008-08-02 2010-02-04 Hartmann-Exact Gmbh Einrichtung zur Bestimmung der Position des Stellgliedes eines Getriebes
WO2010057760A1 (fr) * 2008-11-20 2010-05-27 Schaeffler Technologies Gmbh & Co. Kg Dispositif pour détecter toutes les positions de changement de vitesses d'une boîte de vitesses
FR2954824A1 (fr) * 2009-12-28 2011-07-01 Continental Automotive France Procede de determination de la position d'un element magnetique utilisant des capteurs a effet hall lineaires et dispositif associe
WO2012059149A1 (fr) 2010-11-04 2012-05-10 Continental Automotive France Procede et dispositif de determination de la position d'un element magnetique utilisant des cellules a effet hall lineaires
CN110886840A (zh) * 2018-09-11 2020-03-17 上海汽车变速器有限公司 变速器自动换挡机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581002A1 (fr) * 1985-04-26 1986-10-31 Jidosha Kiki Co Installation de detection de la position d'un mecanisme de transmission de vehicule automobile
JPS6280330A (ja) * 1985-10-01 1987-04-13 Yuhshin Co Ltd 車輌用変速機の検出装置
GB2214248A (en) 1987-12-08 1989-08-31 Automotive Products Plc Ratio selector system using fluid actuators and ectrohydraulic control in a vehicle transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581002A1 (fr) * 1985-04-26 1986-10-31 Jidosha Kiki Co Installation de detection de la position d'un mecanisme de transmission de vehicule automobile
JPS6280330A (ja) * 1985-10-01 1987-04-13 Yuhshin Co Ltd 車輌用変速機の検出装置
GB2214248A (en) 1987-12-08 1989-08-31 Automotive Products Plc Ratio selector system using fluid actuators and ectrohydraulic control in a vehicle transmission

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 281 (M - 624) 11 September 1987 (1987-09-11) *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315526B (en) * 1996-07-25 2001-02-14 Luk Getriebe Systeme Gmbh Method for the function monitoring of a motor vehicle gearbox and motor vehicle for use with the method
WO2001051893A1 (fr) * 2000-01-13 2001-07-19 Continental Teves Ag & Co. Ohg Capteur de deplacement lineaire et utilisation en tant que dispositif d'actionnement de vehicules motorises
US6823725B2 (en) 2000-01-13 2004-11-30 Continental Teves Ag & Co., Ohg Linear distance sensor and the use thereof as actuator for motor vehicles
EP1843063A1 (fr) * 2006-04-06 2007-10-10 Magneti Marelli Powertrain S.p.A. Actionneur avec capteur de position sans contact
US7759930B2 (en) 2006-04-06 2010-07-20 Magneti Marelli Powertrain S.P.A. Actuator with a non-contact position sensor
EP1882871A1 (fr) * 2006-07-26 2008-01-30 Sc2N Boîte de vitesses d'un véhicule automobile comportant un capteur magnétique à effet Hall
FR2904394A1 (fr) * 2006-07-26 2008-02-01 Sc2N Sa Capteur de position d'une boite de vitesses d'un vehicule automobile
DE102008036107A1 (de) * 2008-08-02 2010-02-04 Hartmann-Exact Gmbh Einrichtung zur Bestimmung der Position des Stellgliedes eines Getriebes
DE102008036107B4 (de) * 2008-08-02 2010-05-20 Hartmann-Exact Gmbh Einrichtung zur Bestimmung der Position des Stellgliedes eines Getriebes
WO2010057760A1 (fr) * 2008-11-20 2010-05-27 Schaeffler Technologies Gmbh & Co. Kg Dispositif pour détecter toutes les positions de changement de vitesses d'une boîte de vitesses
FR2954824A1 (fr) * 2009-12-28 2011-07-01 Continental Automotive France Procede de determination de la position d'un element magnetique utilisant des capteurs a effet hall lineaires et dispositif associe
FR2954823A1 (fr) * 2009-12-28 2011-07-01 Continental Automotive France Procede de determination de la position d'un element magnetique utilisant des capteurs a effet hall lineaires et dispositif associe
WO2011079939A2 (fr) 2009-12-28 2011-07-07 Continental Automotive France Procede de determination de la position d'un element magnetique utilisant des capteurs a effet hall lineaires et dispositif associe
WO2011079939A3 (fr) * 2009-12-28 2011-10-06 Continental Automotive France Procede de determination de la position d'un element magnetique utilisant des capteurs a effet hall lineaires et dispositif associe
CN102686979A (zh) * 2009-12-28 2012-09-19 法国欧陆汽车公司 使用霍尔效应线性传感器确定磁性元件位置的方法及相关设备
CN102686979B (zh) * 2009-12-28 2015-02-18 法国欧陆汽车公司 使用霍尔效应线性传感器确定磁性元件位置的方法及相关设备
US9322671B2 (en) 2009-12-28 2016-04-26 Continental Automotive France Method for determining the position of a magnetic element using hall effect linear sensors and associated device
WO2012059149A1 (fr) 2010-11-04 2012-05-10 Continental Automotive France Procede et dispositif de determination de la position d'un element magnetique utilisant des cellules a effet hall lineaires
FR2967255A1 (fr) * 2010-11-04 2012-05-11 Continental Automotive France Dispositif de determination de la position d'un element magnetique utilisant des cellules a effet hall lineaires
CN103250032A (zh) * 2010-11-04 2013-08-14 法国大陆汽车公司 用于使用线性霍尔效应单元确定磁性元件的位置的方法和设备
US9557153B2 (en) 2010-11-04 2017-01-31 Continental Automotive France Device for determining the position of a magnetic element using linear hall-effect cells
CN110886840A (zh) * 2018-09-11 2020-03-17 上海汽车变速器有限公司 变速器自动换挡机构

Also Published As

Publication number Publication date
NL1003299C2 (nl) 1997-12-10
AU2714697A (en) 1998-01-05
NL1003299A1 (nl) 1997-12-10

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