WO2020067954A1 - Partie de boîtier de transmission, élément de transmission et dispositifs associés - Google Patents

Partie de boîtier de transmission, élément de transmission et dispositifs associés Download PDF

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Publication number
WO2020067954A1
WO2020067954A1 PCT/SE2019/050845 SE2019050845W WO2020067954A1 WO 2020067954 A1 WO2020067954 A1 WO 2020067954A1 SE 2019050845 W SE2019050845 W SE 2019050845W WO 2020067954 A1 WO2020067954 A1 WO 2020067954A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
housing part
recess
transmission
transmission housing
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
PCT/SE2019/050845
Other languages
English (en)
Inventor
Nichlas FLORÉN
Mårten DAHLBÄCK
Per ARNELÖF
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.)
Scania CV AB
Original Assignee
Scania CV AB
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 Scania CV AB filed Critical Scania CV AB
Publication of WO2020067954A1 publication Critical patent/WO2020067954A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
    • 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
    • F16D2300/26—Cover or bell housings; Details or arrangements thereof
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein

Definitions

  • the present disclosure relates to a transmission housing part comprising a flange.
  • the present disclosure further relates to a transmission component comprising a transmission housing part and a second housing part.
  • the present disclosure relates to a power train comprising a transmission component, as well as a vehicle comprising a power train.
  • Transmission components such as clutches, gearboxes, and the like, most often comprise a housing which accommodates shafts, gears, friction discs and the like.
  • a problem associated with transmission components is that they can generate a lot of heat in short time periods which quickly affects air in the housing which thereby expands.
  • the air in the housing will cool down and will as a result be compressed.
  • An overpressure, as well as a negative pressure, in the housing may damage seals and may cause unwanted leakages.
  • the housing is preferably vented. However, the housing should not be completely open so that, for example, water and dirt can enter the housing.
  • a transmission housing part comprising a flange.
  • the flange is arranged to be mounted to a second flange of a second housing part in order to accommodate a transmission arrangement in an inner volume formed by the transmission housing part and the second housing part.
  • the flange comprises a flange surface having an inner delimiting surface and an outer delimiting surface.
  • the flange further comprises a recess extending along the flange surface.
  • the flange surface comprises an inner groove extending through the inner delimiting surface into the recess, and an outer groove extending through the outer delimiting surface into the recess.
  • a transmission housing part is provided in which a venting channel is formed through the inner groove, the recess, and the outer groove when the flange is mounted to the second flange.
  • a separate venting arrangement for venting the transmission component is circumvented, which would add cost and complexity to the transmission component.
  • the need for a separate venting arrangement is circumvented, more space is available for other components, arrangements and systems in a vehicle comprising the transmission housing part.
  • a transmission housing part having conditions and characteristics suitable for reducing cost and facilitating assembly of a transmission component.
  • a transmission housing part is provided overcoming, or at least alleviating, at least some of the above-mentioned problems and drawbacks. As a result, the above- mentioned object is achieved.
  • the recess is elongated and is provided at a position between the inner delimiting surface and the outer delimiting surface.
  • conditions are provided for forming a venting channel efficiently venting the transmission component when the flange is mounted to the second flange.
  • venting channel can be provided using an already present structure of the flange, simply by making the inner and outer groove in the casting process, or in a subsequent manufacturing step after the casting process of the transmission housing part.
  • a transmission housing part having conditions and characteristics suitable for reducing cost and facilitating assembly of a transmission component.
  • the flange is substantially circular, and wherein the recess is substantially arc shaped.
  • conditions are provided for forming a venting channel efficiently venting the transmission component when the flange is mounted to the second flange.
  • the curvature of the arc-shaped recess substantially coincides with the curvature of the substantially circular flange.
  • conditions are provided for forming a venting channel efficiently venting the transmission component when the flange is mounted to the second flange.
  • the outer groove is arranged at a circumferential distance from the inner groove.
  • a transmission housing part capable of forming a venting channel of a transmission component, wherein the venting channel is less likely to conduct water, dirt, and particles into the transmission component.
  • the flange is substantially circular, and wherein the circumferential distance is greater than the radius of the flange.
  • a transmission housing part is provided capable of forming a venting channel of a transmission component, wherein the venting channel is even less likely to conduct water, dirt, and particles into the transmission component.
  • the flange comprises a top portion, wherein the top portion is the top portion of the flange relative the gravitational field at the location of the transmission housing part when the transmission housing part is positioned in an upright use position, and wherein the inner groove is arranged closer to the top portion than the outer groove.
  • a transmission housing part is provided capable of forming a venting channel of a transmission component, wherein the venting channel is even less likely to conduct water, dirt, and particles into the transmission component.
  • wanted substances in the inner volume such as oil, is prevented from flowing out of the inner volume, via the venting channel formed by the recess, when the flange is mounted to the second flange.
  • the flange comprises a second recess extending along the flange surface, and wherein the flange surface comprises a second inner groove extending through the inner delimiting surface into the second recess, and a second outer groove extending through the outer delimiting surface into the second recess.
  • the flange surface comprises a second inner groove extending through the inner delimiting surface into the second recess, and a second outer groove extending through the outer delimiting surface into the second recess
  • a transmission housing part is provided in which a venting channel is also formed through the second inner groove, the second recess, and the second outer groove when the flange is mounted to the second flange.
  • the object is achieved by a transmission component comprising a transmission housing part and a second housing part according to some embodiments of the present disclosure.
  • a transmission component in which a venting channel is formed through the inner groove, the recess, and the outer groove when the flange of the transmission housing part is mounted to the second flange of the second housing part.
  • a transmission component having conditions and characteristics suitable for being manufactured and assembled in a cost-efficient manner.
  • a transmission component is provided overcoming, or at least alleviating, at least some of the above-mentioned problems and drawbacks. As a result, the above- mentioned object is achieved.
  • the transmission component is a clutch.
  • an efficient venting of the clutch is provided in a simple and cost-efficient manner, and the need for a separate venting arrangement for venting the clutch is circumvented.
  • the object is achieved by a power train comprising a transmission component according to some embodiments of the present disclosure.
  • a power train comprising a transmission component in which a venting channel is formed through the inner groove, the recess, and the outer groove when the flange of the transmission housing part is mounted to the second flange of the second housing part.
  • a power train is provided in which venting of the transmission component is provided in a simple and cost-efficient manner, and the need for a separate venting arrangement for venting the transmission component is circumvented which would add cost and complexity to the powertrain.
  • the need for a separate venting arrangement is circumvented, more space is available for other components, arrangements and systems in a vehicle comprising the power train.
  • a power train having conditions and characteristics suitable for being manufactured and assembled in a more cost-efficient manner.
  • a power train is provided overcoming, or at least alleviating, at least some of the above-mentioned problems and drawbacks. As a result, the above-mentioned object is achieved.
  • the object is achieved by a vehicle comprising a power train according to some embodiments of the present disclosure.
  • a vehicle comprising a transmission component in which a venting channel is formed through the inner groove, the recess, and the outer groove when the flange of the transmission housing part is mounted to the second flange of the second housing part.
  • venting of the transmission component is provided in a simple and cost-efficient manner, and the need for a separate venting arrangement for venting the transmission component is circumvented which would add cost and complexity to the vehicle.
  • the need for a separate venting arrangement is circumvented, more space is available for other components, arrangements, and systems in the vehicle.
  • a vehicle having conditions and characteristics suitable for being manufactured and assembled in a more cost-efficient manner.
  • a vehicle is provided overcoming, or at least alleviating, at least some of the above-mentioned problems and drawbacks. As a result, the above-mentioned object is achieved.
  • Fig. 1 illustrates a transmission housing part according to some embodiments
  • Fig. 2 illustrates a power train according to some embodiments
  • Fig. 3 illustrates a vehicle according to some embodiments.
  • Fig. 1 illustrates a transmission housing part 1 , according to some embodiments.
  • the transmission housing part 1 is a flywheel housing part, made in accordance with the standard ISO 7649:1991 .
  • the transmission housing part 1 may be a clutch housing part, a gearbox housing part, or the like.
  • the transmission housing part 1 as referred to herein, may be an integral part of an engine, a clutch, a gearbox, or the like, or may be a separate part arranged to be mounted to an engine, a clutch, a gearbox, or the like.
  • the transmission housing part 1 comprises a flange 3.
  • the flange 3 is arranged to be mounted to a second flange of a second housing part in order to accommodate a transmission arrangement in an inner volume 1 1 formed by the transmission housing part 1 and the second housing part.
  • the flange 3 comprises a flange surface 13 having an inner delimiting surface 15 and an outer delimiting surface 17. According to the illustrated embodiments, at least portions of the flange surface 13 extends in a flat plane.
  • the inner delimiting surface 15, as referred to herein, may also be referred to as a radially inner delimiting surface 15, and the outer delimiting surface 17, as referred to herein, may also be referred to as a radially outer delimiting surface 17.
  • the inner delimiting surface 15 faces the inner volume 1 1 and the outer delimiting surface 17 faces the environment outside of the inner volume 1 1 when the flange 3 is mounted to a second flange of a second housing part.
  • the flange 3 further comprises a recess 19 extending along the flange surface 13.
  • the flange surface 13 comprises an inner groove 21 extending through the inner delimiting surface 15 into the recess 19. Moreover, the flange surface 13 comprises an outer groove 23 extending through the outer delimiting surface 17 into the recess 19. In this manner, a venting channel is formed via the inner groove 21 , the recess 19 and the outer groove 23 when the flange 3 is mounted to a second flange of a second housing part.
  • air can be evacuated from the inner volume 1 1 , to the environment outside of the inner volume 1 1 via the inner groove 21 , the recess 19 and the outer groove 23, for example during an increase in temperature of the air inside the inner volume 1 1.
  • air can flow into the inner volume 1 1 from the environment outside of the inner volume 1 1 via the outer groove 23, the recess 19 and the inner groove 21.
  • a transmission housing part 1 is provided circumventing the need for a separate venting arrangement for venting the inner volume 1 1 of a transmission component.
  • the inner groove 21 as referred to herein, may also be referred to as a radially inner groove 21
  • the outer groove 23, as referred to herein, may also be referred to as a radially outer groove 23.
  • the recess 19 is elongated and is provided at a position between the inner delimiting surface 15 and the outer delimiting surface 17.
  • the flange 3 is
  • the recess 19 is substantially circular, and wherein the recess 19 is substantially arc-shaped.
  • the curvature of the arc-shaped recess 19 substantially coincides with the curvature of the substantially circular flange 3.
  • at least portions 24 of the recess 19 are made in a casting process of the transmission housing part 1 . That is, the recess 19 comprises at least portions 24 which are made in the casting process of the transmission housing part 1.
  • the original purpose of the portions 24 of the recess 19 may be to ensure a more uniform wall thickness of the transmission housing part 1 in the casting process of the transmission housing part 1.
  • the flange 3 comprises grooves 26 extending along the flange surface 13 between the portions 24 of the recess 19.
  • the grooves 26 fluidly connects the portions 24 of the recess 19 when the flange 3 is mounted to the second flange.
  • the grooves 26 may be made in the casting process of the transmission housing part 1 , or in a subsequent manufacturing process after the casting process of the transmission housing part 1 , for example using milling or grinding.
  • the flange 3 comprises a number of holes 27 arranged to receive fastening elements, such as bolts, when mounting the flange 3 to the second flange.
  • the holes 27 may be through holes and/or threaded holes.
  • the grooves 26 extend over the holes 27.
  • two adjacent portions 24 of the recess 19 are fluidly connected via grooves 26 and a hole 27 when the flange 3 is mounted to the second flange.
  • the recess 19, as referred to herein, may comprise the portions 24 made in the casting process of the transmission housing part 1 , the grooves 26, and/or the holes 27 for receiving fastening elements.
  • the outer groove 23 is arranged at a circumferential distance cd from the inner groove 21 , wherein the circumferential distance cd is greater than the radius r of the flange 3.
  • the radius r of the flange 3 may be defined as the distance between a centre point C of the flange 3 to the outer delimiting surface 17 of the flange 3.
  • the transmission housing part 1 is a flywheel housing part. According to these embodiments, the centre point C of the flange 3 coincides with a rotation axis of the flywheel.
  • the flange 3 comprises a top portion 25.
  • the top portion 25 is the top portion of the flange 3 relative the gravitational field at the location of the transmission housing part 1 when the transmission housing part 1 is positioned in an upright use position.
  • the transmission housing part 1 is illustrated in the upright use position.
  • the upright use position corresponds to a position obtained when the flange 3 is mounted to a second flange of a second housing part in a transmission component of a vehicle.
  • the inner groove 21 is arranged closer to the top portion 25 than the outer groove 23.
  • the inner groove 21 is arranged above the centre point C of the flange 3, and the outer groove 23 is arranged below the centre point C of the flange 3, when the transmission housing part 1 is positioned in the upright use position. Due to these features, water, dirt, and particles are less likely to enter the inner volume 1 1 when the flange 3 is mounted to the second flange. Moreover, wanted substances in the inner volume 1 1 , such as oil, is prevented from flowing out of the inner volume 1 1 via the venting channel formed by the recess 19 when the flange 3 is mounted to the second flange.
  • the flange 3 comprises a second recess 19’ extending along the flange surface 13.
  • the flange surface 13 comprises a second inner groove 2T extending through the inner delimiting surface 15 into the second recess 19’, and a second outer groove 23’ extending through the outer delimiting surface 17 into the second recess 19’.
  • a venting channel is formed also via the second inner groove 21’, the second recess 19’ and second outer groove 23’ when the flange 3 is mounted to the second flange.
  • air can be evacuated from the inner volume 1 1 , to the environment outside of the inner volume 1 1 via the second inner groove 21 the second recess 19’, and the second outer groove 23’, for example during an increase in temperature of the air inside the inner volume 1 1 .
  • air can flow into the inner volume 1 1 from the environment outside of the inner volume 1 1 via the second outer groove 23’, the second recess 19’ and the second inner groove 21’.
  • the second outer groove 23’, the second recess 19’ and the second inner groove 2T comprise corresponding features, functions and advantages as the outer groove 23, the recess 19 and the inner groove 21 , and will not be further explained herein.
  • the wording“recess 19”, as used herein may be replaced by the wording“first recess 19”.
  • the wording“inner groove 21”, as used herein may be replaced by the wording“first inner groove 21”
  • the wording“outer groove 23”, as used herein, may be replaced by the wording“first outer groove 23”.
  • Fig. 2 illustrates a power train 32 according to some embodiments.
  • the power train 32 comprises a power source 34 and a transmission 36.
  • the power source 34 is arranged to provide motive power to a vehicle, and the transmission 36 is arranged to transfer torque between the power source 34 and wheels 38 of the vehicle.
  • the transmission 36 comprises a transmission component 30, which according to the illustrated embodiments is a clutch.
  • the transmission 36 further comprises a gearbox 39.
  • the transmission component 30 is thus arranged to control the torque transferred between the power source 34 and the gearbox 39.
  • the power source 34 may comprise an internal combustion engine, for example a
  • the compression ignition engine such as a diesel engine, or an Otto engine with a spark-ignition device, wherein the Otto engine may be configured to run on gas, petrol, alcohol, similar volatile fuels, or combinations thereof.
  • the power source 34 may comprise one or more electrical machines.
  • the transmission component 30 comprises a transmission housing part 1 according to the embodiments illustrated in Fig. 1 and a second housing part 7.
  • The“second housing part 7”, as referred to herein, may also be referred to as a“second transmission housing part 7”.
  • the transmission housing part 1 may be referred to as a flywheel housing part, which may be an integral part of the power source 34 or may be a separate transmission housing part 1 mounted onto the power source 34.
  • the second housing part 7 may be referred to as a clutch housing part, which may be an integral part of the gearbox 39 or may be mounted onto the gearbox 39.
  • the flange 3 of the transmission housing part 1 is mounted to a second flange 5 of the second housing part 7 in order to accommodate a transmission arrangement 9 in an inner volume 1 1 formed by the transmission housing part 1 and the second housing part 7.
  • the transmission arrangement 9 is a clutch arrangement comprising friction discs.
  • the second flange 5 of the second housing part 7 may comprise a flat flange surface.
  • the second flange 5 of the second housing part 7 may share one or more features with the flange 3 depicted in Fig. 1.
  • Fig. 3 illustrates a vehicle 40, according to some embodiments.
  • the vehicle 40 comprises a power train 32 according to the embodiments illustrated in Fig. 2.
  • the power train 32 is arranged to provide motive power to the vehicle 40 via wheels 38 of the vehicle 40.
  • the vehicle 40 is a truck.
  • the vehicle 40 may be another type of manned or unmanned vehicle for land or water based propulsion such as a lorry, a bus, a construction vehicle, a tractor, a car, a ship, a boat, or the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

L'invention concerne une partie de boîtier de transmission (1) comprenant une bride (3) conçue pour être montée sur une seconde bride (5) d'une seconde partie de boîtier (7). La bride (3) comprend une surface de bride (13) ayant une surface de délimitation intérieure (15), une surface de délimitation extérieure (17) et un creux (19) s'étendant le long de la surface de bride (13). La surface de bride (13) comprend une rainure intérieure (21) s'étendant à travers la surface de délimitation intérieure (15) dans le creux (19), et une rainure extérieure (23) s'étendant à travers la surface de délimitation extérieure (17) dans le creux (19). La présente invention concerne en outre un élément de transmission (30), un groupe propulseur (32) et un véhicule (40).
PCT/SE2019/050845 2018-09-27 2019-09-10 Partie de boîtier de transmission, élément de transmission et dispositifs associés Ceased WO2020067954A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1851152A SE1851152A1 (en) 2018-09-27 2018-09-27 Transmission Housing part, Transmission Component and Related Devices
SE1851152-7 2018-09-27

Publications (1)

Publication Number Publication Date
WO2020067954A1 true WO2020067954A1 (fr) 2020-04-02

Family

ID=69952335

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2019/050845 Ceased WO2020067954A1 (fr) 2018-09-27 2019-09-10 Partie de boîtier de transmission, élément de transmission et dispositifs associés

Country Status (2)

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SE (1) SE1851152A1 (fr)
WO (1) WO2020067954A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059397A2 (fr) * 1981-02-20 1982-09-08 Nissan Motor Co., Ltd. Dispositif d'aération d'une boîte de vitesse manuelle pour véhicules automobiles
JPS5922365Y2 (ja) * 1979-07-04 1984-07-04 マツダ株式会社 トランスミツシヨンのブリ−ザ装置
US4911035A (en) * 1987-03-31 1990-03-27 Nissan Motor Co., Ltd. Air breather device of automatic transmission
EP1477709A1 (fr) * 2003-05-15 2004-11-17 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Boítier
US20100126306A1 (en) * 2008-11-27 2010-05-27 Shinji Ito Motorcycle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922365Y2 (ja) * 1979-07-04 1984-07-04 マツダ株式会社 トランスミツシヨンのブリ−ザ装置
EP0059397A2 (fr) * 1981-02-20 1982-09-08 Nissan Motor Co., Ltd. Dispositif d'aération d'une boîte de vitesse manuelle pour véhicules automobiles
US4911035A (en) * 1987-03-31 1990-03-27 Nissan Motor Co., Ltd. Air breather device of automatic transmission
EP1477709A1 (fr) * 2003-05-15 2004-11-17 Ford Global Technologies, LLC, A subsidary of Ford Motor Company Boítier
US20100126306A1 (en) * 2008-11-27 2010-05-27 Shinji Ito Motorcycle

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