WO2004031614A1 - Galet presseur pour un entrainement par friction - Google Patents

Galet presseur pour un entrainement par friction Download PDF

Info

Publication number
WO2004031614A1
WO2004031614A1 PCT/EP2003/010487 EP0310487W WO2004031614A1 WO 2004031614 A1 WO2004031614 A1 WO 2004031614A1 EP 0310487 W EP0310487 W EP 0310487W WO 2004031614 A1 WO2004031614 A1 WO 2004031614A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure roller
drive
piston
pressure
housing
Prior art date
Application number
PCT/EP2003/010487
Other languages
German (de)
English (en)
Inventor
Michael Bogner
Original Assignee
Ina-Schaeffler Kg
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
Priority claimed from DE10339617A external-priority patent/DE10339617A1/de
Application filed by Ina-Schaeffler Kg filed Critical Ina-Schaeffler Kg
Priority to AU2003289850A priority Critical patent/AU2003289850A1/en
Publication of WO2004031614A1 publication Critical patent/WO2004031614A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
    • F16H13/10—Means for influencing the pressure between the members
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements

Definitions

  • the present invention relates to a pressure roller for a friction wheel drive, which is combined with a traction mechanism drive, for driving at least one unit of an internal combustion engine.
  • the pressure roller which can be adjusted in at least two positions, is non-positively supported on a contact disk of a drive element in an operating position and is positioned separately from the drive element in a neutral position.
  • Friction wheel drives are intended for various applications in mechanical engineering and vehicle construction. From DE 196 35 808 A1 an additional drive designed as a friction wheel drive for a vehicle wheel of a motorcycle is known. This drive has the task of supporting the conventional drive of the vehicle as required.
  • the friction wheel eb includes an electric motor that drives a pressure roller via a gear that can be pivoted in the direction of the wheel rim.
  • the switchable friction wheel support supports the conventional drive of the wheel, for example, if the propulsion of the vehicle is impaired due to a lack of static friction or if the driving force of the conventionally driven wheels is insufficient to overcome an incline.
  • DE 195 07 607 C2 shows a further state of the art in which a pressure roller of a friction wheel drive is pivotably arranged between two friction shafts rotating in opposite directions.
  • the friction wheel drive is with one connected as a chain drive traction drive.
  • the friction wheel or pressure roller in conjunction with a chain drive, enables a drive shaft to be driven in two directions of rotation.
  • a manually operated spring device is provided for adjusting the pressure roller.
  • the present invention is based on the object of realizing the drive of a separate unit of an internal combustion engine as required.
  • a friction wheel drive which comprises a pressure roller which can be displaced by means of a " pressurized piston.
  • the pressure roller according to the invention is supported in the operating position, at the same time on contact disks of an output element and a drive element in order to drive one In the neutral position, the pressure roller is positioned separately from the unit via the piston.
  • the force-actuated, non-rotatably guided piston limits a pressure space in the housing.
  • the pressure roller according to the invention, assigned to a friction wheel drive, in combination with the traction mechanism drive enables a modular drive for auxiliary units an internal combustion engine.
  • the friction wheel drive according to the invention is advantageously intended for driving a coolant pump as required and the traction drive for driving further auxiliary units of the internal combustion engine, such as, for example, power steering pump, air conditioning compressor, generator.
  • the coolant or water pump can be decoupled from the drive in the start mode in which no cooling of the internal combustion engine is required, ie the coolant pump drive is omitted when the internal combustion engine is started. This measure optimizes consumption and at the same time reduces wear, since the operating temperature of the internal combustion engine can be reached more quickly. It is also possible to use an alternative to one Visco-coupling to drive the air conditioning compressor of the internal combustion engine by means of the pressure roller designed according to the invention exclusively as required.
  • the structure of the pressure roller of a friction wheel drive according to the invention provides that it is rotatably inserted at the end in a piston designed as a fork head.
  • the cylindrical pressure chamber of the housing can advantageously be acted upon by a hydraulic fluid. This results in a hydraulic adjustment of the pressure roller, which can be influenced, for example, by means of an electronic control taking into account operating parameters.
  • a return device is preferably provided between the piston and the housing. This ensures an always clear position of the pressure roller.
  • the return device applies force to the piston in the direction of the neutral position, in which the pressure roller does not drive the coolant pump or any drive element.
  • a return spring integrated in the pressure chamber of the housing is particularly suitable as a return device, which for example shifts the piston in the direction of the neutral position when the pressure roller is switched hydraulically from the operating position into the neutral position.
  • the invention includes a compression spring, preferably inserted in the pressure chamber of the housing, between the housing and the piston, by means of which the pressure roller is continuously subjected to force in the direction of the operating position.
  • a compression spring preferably inserted in the pressure chamber of the housing, between the housing and the piston, by means of which the pressure roller is continuously subjected to force in the direction of the operating position.
  • An opposite adjustment of the piston and the pressure roller associated therewith in the direction of the neutral position results in a negative pressure introduced in the pressure chamber. This is the case Provided with a vacuum connection through which a vacuum enters the pressure chamber.
  • a further embodiment of the invention provides for the pressure roller to be adjusted as a function of operating parameters and / or ambient conditions of the internal combustion engine.
  • the pressure roller it is possible, for example, for the pressure roller to be adjustable depending on the coolant temperature and / or the lubricant temperature of the internal combustion engine.
  • an electronic control is advantageously provided, to which sensors are assigned, which, for example when the limit temperatures are exceeded, displaces the piston and the pressure roller connected therewith in order to cause or interrupt a drive of the coolant pump.
  • suitable control elements for example multi-way valves, the pressure of the housing can be acted upon with a hydraulic fluid.
  • the housing is positioned in a limited pivotable position in connection with the piston and the associated pressure roller. This measure ensures an ideal alignment of the pressure roller, in order to achieve a largely slip-free friction wheel drive from the driven roller via the pressure roller to the drive element.
  • Another advantageous design of the invention provides for the piston and the pressure roller connected therewith to be positioned continuously between the neutral position and the operating position. This ensures an adjustment of the friction wheel drive, which is necessary, for example, if the contact disks or the pressure roller wear.
  • the pressure roller according to the invention preferably has an elastic jacket surface which likewise has an effect on a slip-free drive between the output element and the pressure roller on the one hand and the pressure roller and the drive element on the other hand.
  • an elastic jacket surface it makes sense to cover the pressure roller with a rubber-like cylindrical outer shell. see.
  • the pressure roller can be provided with at least one or advantageously a plurality of round rubber rings or O-rings arranged in parallel.
  • the elastic jacket surface also advantageously reduces the noise development of the friction wheel drive.
  • the invention includes providing all components forming the friction drive, such as output member, drive member and pressure roller, with an elastic jacket surface.
  • the pressure roller In the operating position, the pressure roller is preferably supported directly on the contact disk of the drive element and at the same time indirectly on the traction means in the area of the output element.
  • This structure enables the pressure roller to be arranged in alignment with the traction means of the traction mechanism drive. Due to the indirect support of the pressure roller on the output member, a slip-optimized drive is simultaneously established.
  • the pressure roller is supported according to the invention in the operating position with an almost constant contact pressure on the contact disks of the drive element and the drive element.
  • This goal is achieved by means of a correspondingly designed electronic control.
  • it is advisable to monitor the control pressure in the pressure chamber of the housing by means of suitable pressure sensors, in order to depend on it to influence the pressure of the hydraulic fluid or the vacuum.
  • a seal between the piston and the housing is advantageously provided in order to achieve a permanent function or increased service life of the friction wheel drive.
  • a seal inserted into an annular groove of the housing, a round rubber ring or an O-ring is particularly suitable for this.
  • a Sealing sleeve or a bellows are provided, which surrounds the piston or the clevis with one end and the housing with the other end and is positioned on the respective component.
  • An annular groove is preferably suitable for this purpose, into which a bead of the bellows is fitted in a form-fitting manner.
  • Figure 1 in a sectional view the structure of the invention; moderate friction wheel drive;
  • FIG. 2 shows the side view of the friction wheel drive according to FIG. 1, in which the housing includes a vacuum connection;
  • FIG. 3 shows the friction wheel drive according to FIG. 3, the housing being provided with a pressure medium connection;
  • Figure 4 shows the end profiled portion of the piston which in
  • FIG. 5 shows a traction mechanism drive in connection with the friction wheel drive according to the invention in the operating position
  • Figure 6 is a representation comparable to Figure 5, wherein the friction wheel drive is shown in the neutral position. Detailed description of the drawings
  • FIG. 1 shows a sectional view of the friction wheel drive 1 according to the invention, consisting of a housing 2 which is fastened to a machine part 3, for example a crankcase of an internal combustion engine.
  • a piston 4 designed as a fork head is used in the housing 2 and has a pressure roller 5 at the end.
  • the pressure roller 5 has an elastic jacket surface 6.
  • the piston 5 is fitted into a cylindrical receptacle, the pressure chamber 7 of the housing 2.
  • the pressure chamber 7 comprises a spring means 8 designed as a compression spring, which is supported on the one hand on the end face of the piston 4 and on the other hand on a wall of the housing 2.
  • the spring means 8, the compression spring causes an expansion force between the housing 2 and the piston 4, whereby the pressure roller 5 is acted upon in the direction of the arrow, ie in the direction of the operating position.
  • the housing 2 is provided with a vacuum connection 9, via which a vacuum, ie a vacuum, can be introduced into the pressure chamber 7 to move the pressure roller 5 into the neutral position ..to relocate ..
  • a seal 10 designed as an O-ring is provided, which is inserted in a form-fitting and fixed position in an annular groove 10 of the housing 2.
  • a bellows 12 is provided which encloses both the housing 2 and the piston 4 on the outside.
  • the bellows 12 is provided on both ends with a circumferential bead which engages in a form-fitting manner in an associated annular groove in the housing 2 or the piston 4.
  • the friction wheel drive 1 is pivotally fixed relative to the machine part 3.
  • a screw connection 29 is provided, which is inserted into a bore 30 of the housing 2 and which is supported on the end face of the housing 2 via a plate spring 26.
  • the pivoting range of the housing 2 is limited by a segment-like cutout 27 in the housing 2, which is arranged axially offset from the bore 30 and is intended for a pin 28 inserted in the machine part 3.
  • FIG. 3 shows the piston 4, which is guided in a longitudinally displaceable manner in the housing 2 by means of a wedge profile 13 and thus secured against rotation.
  • the wedge profile 13 corresponds to a correspondingly designed inner profile 32 on the inner wall of the housing 2.
  • the wedge profile 13 of the piston 4 forms a symmetrical toothing on the outside.
  • a spring means 17 designed as a tension spring is provided between the housing 2 and the piston 4. The spring means 17 thus exerts a force on the piston 4 in the direction of the arrow, ie. H. the pressure roller 5 is urged into the neutral position according to FIG. 6 by means of the spring means 17.
  • An opposite adjusting movement of the piston 4 can be carried out by a pressure medium.
  • a pressure medium source 15 is used, from which a hydraulic fluid passes via an actuator 16 and a connecting line 25 to a pressure medium connection 14 of the housing 2 and thus into the pressure chamber 7.
  • the actuator 16 is actuated via the electronic control 33, which is preferably connected to sensors 34.
  • this control 16 enables the piston 4 and the pressure roller 5 connected therewith to be adjusted as a function of operating parameters of the internal combustion engine, taking into account, for example, the coolant temperature.
  • FIGS. 5 and 6 show an example of a traction mechanism drive 18 of an internal combustion engine, which is connected to a friction wheel drive 1 according to the invention.
  • the output takes place via the output element 19 connected to the crankshaft of the internal combustion engine.
  • a traction means 20 connects the output element 19 and all the assemblies connected to the traction means drive 18. gate like, the air conditioning compressor 21, the generator 22 and the tensioning device 23.
  • the drive element 24 is driven by means of the friction wheel drive 1 according to the invention, which, as shown in FIGS. 1 to 3, is fastened to the machine part 3 to a limited extent by means of the screw connection 29.
  • the pressure roller 5 of the friction wheel drive 1 is non-positively supported on the associated contact disks of the drive member 24 and the driven member 9 and thus drives the drive member 24, which is preferably designed as a coolant pump.
  • the friction wheel drive 1 is in Figure 6 shown in the neutral position.
  • the pressure roller 5 is positioned separately from the drive element 24, as a result of which the drive element 24 is not driven.
  • Pressure medium source 32 inner profile

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Friction Gearing (AREA)

Abstract

L'invention concerne un entraînement par friction (1), qui présente un galet presseur (5) pouvant coulisser au moyen d'un piston (4) entre une position de fonctionnement et une position de repos. Le déplacement s'effectue au moyen d'un fluide hydraulique introduit dans la chambre de pression (7) du boîtier (2). Un élément ressort (17) se présentant sous la forme d'un ressort de traction, s'opposant à une pression hydraulique, est logé dans la chambre de pression (7).
PCT/EP2003/010487 2002-09-25 2003-09-20 Galet presseur pour un entrainement par friction WO2004031614A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003289850A AU2003289850A1 (en) 2002-09-25 2003-09-20 Pressure roller for a friction drive

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10245028.5 2002-09-25
DE10245028 2002-09-25
DE10339617.9 2003-08-28
DE10339617A DE10339617A1 (de) 2002-09-25 2003-08-28 Andruckrolle für einen Reibradantrieb

Publications (1)

Publication Number Publication Date
WO2004031614A1 true WO2004031614A1 (fr) 2004-04-15

Family

ID=32070692

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/010487 WO2004031614A1 (fr) 2002-09-25 2003-09-20 Galet presseur pour un entrainement par friction

Country Status (2)

Country Link
AU (1) AU2003289850A1 (fr)
WO (1) WO2004031614A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2884886A1 (fr) * 2005-04-21 2006-10-27 Renault Sas Dispositif d'entrainement par friction d'un accessoire de moteur a combustion interne
US7357132B2 (en) 2004-11-09 2008-04-15 Arizona Public Service Company Positioning system and method of orienting an object using same
US20230258246A1 (en) * 2020-06-09 2023-08-17 Ashlyn ANTONY An apparatus for eliminating slack and vibrations in the chain of a chain drive
US11982352B2 (en) * 2020-06-09 2024-05-14 Ashlyn ANTONY Apparatus for eliminating slack and vibrations in the chain of a chain drive

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1391572A (en) * 1919-01-24 1921-09-20 Thomas B Nickel Pump-operating mechanism
GB461603A (en) * 1936-07-20 1937-02-19 Karl Metzger Improvements in or relating to air-conditioning systems in motor vehicles
US2823546A (en) * 1952-06-27 1958-02-18 Barrett Walter William Henry Coupling for the transmission of rotary motion
US4822321A (en) * 1988-07-18 1989-04-18 General Motors Corporation Combination water pump and belt tensioner
DE3934884A1 (de) * 1989-10-19 1991-04-25 Bayerische Motoren Werke Ag Endloses zugmittelgetriebe einer brennkraftmaschine
DE19635808A1 (de) 1996-09-04 1998-03-05 Bayerische Motoren Werke Ag Antriebsvorrichtung für ein Fahrzeugrad mit Radfelge
DE19507607C2 (de) 1995-03-04 1998-12-10 Kaercher Gmbh & Co Alfred Fahrbare Kehrvorrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1391572A (en) * 1919-01-24 1921-09-20 Thomas B Nickel Pump-operating mechanism
GB461603A (en) * 1936-07-20 1937-02-19 Karl Metzger Improvements in or relating to air-conditioning systems in motor vehicles
US2823546A (en) * 1952-06-27 1958-02-18 Barrett Walter William Henry Coupling for the transmission of rotary motion
US4822321A (en) * 1988-07-18 1989-04-18 General Motors Corporation Combination water pump and belt tensioner
DE3934884A1 (de) * 1989-10-19 1991-04-25 Bayerische Motoren Werke Ag Endloses zugmittelgetriebe einer brennkraftmaschine
DE19507607C2 (de) 1995-03-04 1998-12-10 Kaercher Gmbh & Co Alfred Fahrbare Kehrvorrichtung
DE19635808A1 (de) 1996-09-04 1998-03-05 Bayerische Motoren Werke Ag Antriebsvorrichtung für ein Fahrzeugrad mit Radfelge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7357132B2 (en) 2004-11-09 2008-04-15 Arizona Public Service Company Positioning system and method of orienting an object using same
FR2884886A1 (fr) * 2005-04-21 2006-10-27 Renault Sas Dispositif d'entrainement par friction d'un accessoire de moteur a combustion interne
US20230258246A1 (en) * 2020-06-09 2023-08-17 Ashlyn ANTONY An apparatus for eliminating slack and vibrations in the chain of a chain drive
US11982352B2 (en) * 2020-06-09 2024-05-14 Ashlyn ANTONY Apparatus for eliminating slack and vibrations in the chain of a chain drive

Also Published As

Publication number Publication date
AU2003289850A1 (en) 2004-04-23

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