EP2053248A2 - Riemenantriebssystem und Verfahren zur Herstellung desselben - Google Patents

Riemenantriebssystem und Verfahren zur Herstellung desselben Download PDF

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Publication number
EP2053248A2
EP2053248A2 EP20080291007 EP08291007A EP2053248A2 EP 2053248 A2 EP2053248 A2 EP 2053248A2 EP 20080291007 EP20080291007 EP 20080291007 EP 08291007 A EP08291007 A EP 08291007A EP 2053248 A2 EP2053248 A2 EP 2053248A2
Authority
EP
European Patent Office
Prior art keywords
shaft
plane
mechanism according
drum
bearing
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Withdrawn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
EP20080291007
Other languages
English (en)
French (fr)
Inventor
Jean-Michel Beauprez
Sébastien BRISSON
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.)
NTN SNR Roulements SA
Original Assignee
Societe Nouvelle de Roulements SNR SA
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 Societe Nouvelle de Roulements SNR SA filed Critical Societe Nouvelle de Roulements SNR SA
Publication of EP2053248A2 publication Critical patent/EP2053248A2/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/049—Roller bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • 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

Definitions

  • the invention relates to a belt drive mechanism, and in particular, although in a non-limiting manner, to a mechanism for driving with a belt a water pump wheel of a motor vehicle.
  • a cooling water pump for a motor vehicle engine has a paddle wheel disposed on one side of a housing member forming, on the opposite side of the impeller, an outwardly projecting barrel forming a seat for an inner race ring.
  • the impeller is integral with a shaft section which extends from the casing at the barrel and which is connected to a pulley rim via a radial arm.
  • On the rim is mounted an outer race, the inner and outer rings forming a bearing located axially between the impeller on the one hand and the radial connecting arm on the other.
  • the arm is attached to the shaft by welding.
  • the pump forms with the housing element a unitary subassembly.
  • a cooling water pump for a motor vehicle engine comprising a paddle wheel mounted on one side of a casing element, at the end of a shaft integral with a pulley rim located other side of the housing element.
  • the pulley is guided by a rolling bearing.
  • the outer race of the bearing is formed directly inside the pulley rim.
  • the inner raceway is formed on an axle section mounted on a flange integral with the pump housing.
  • the pulley rim is located between the housing member and the flange, which increases the axial and radial dimensions of the device.
  • the alignment of parts is very imperfect, which requires to take precautions at the seals between the shaft and the housing element.
  • the invention aims to overcome the disadvantages of the state of the art, so as to provide a mechanism which is easy to mount and increased modularity without sacrificing performance.
  • the drum being distinct from the outer ring, it incorporates fewer functions, which simplifies its manufacture.
  • the studs allow a very simple attachment of the pulley drum after mounting the shaft on the frame via the bearing.
  • the term "dowel” means any type of fixing rod, threaded or not, with or without a head, cooperating or not with an auxiliary fastening member such as a nut.
  • the rods can cross the second geometric plane.
  • the drum comprises a flange tangent to the second geometric plane and bearing against the connecting means, the threaded rods cooperating with the connecting means and with the flange.
  • the outer ring may comprise bores cooperating with the securing rods.
  • the connecting means comprise at least one assembly interface with the outer ring, located at a greater distance from the transverse plane than the raceways.
  • the positioning of the interface facilitates assembly.
  • the distance between the assembly interface and the axis of rotation is greater than the pitch diameter of the bearing.
  • the circumference of the interface is therefore important, which further contributes to facilitating the assembly.
  • the mounting of the rolling elements, in particular the rolling bodies, but also, where appropriate, the cage and seals, is also facilitated.
  • connection of the connecting means to the outer ring can be achieved in different ways, including crimping, hooping, welding, gluing or stapling.
  • the connecting means may comprise an assembly interface with the shaft, located at a distance from the axis of rotation less than the inside diameter of the barrel. Because of its small diameter, the assembly interface with the shaft does not hinder the insertion of the shaft into the barrel.
  • the connecting means comprise a sleeve assembled to the shaft by fitting.
  • the connecting means comprise at least one intermediate piece assembled to the shaft and to the outer ring.
  • the connecting means consist of a flange assembled to the shaft and to the outer ring. This flange may advantageously be made of aluminum or stamped steel, provided with punctured for the establishment of the fastening rods.
  • the barrel carries an inner ring on which is formed the inner raceway.
  • this ring may have a radial plane of symmetry, which allows to mount without worrying about its orientation.
  • the inner raceway is formed directly on the shaft. We can then optimize the thicknesses of the drum and drum, and if necessary increase the size of the balls.
  • the barrel carries two coaxial inner raceways, the outer race being provided with two outer raceways located facing the two inner raceways, forming with the rolling bodies a rolling bearing with two rows of rolling bodies.
  • the load lines of the rolling bodies of the two rows of rolling bodies are inclined with respect to a radial plane, which gives a greater axial stability to the rolling.
  • the outer ring is advantageously a single piece with two raceways, as well as the inner ring.
  • the rolling bodies are balls, although cylindrical or conical rollers or needles are possible.
  • the range of the drum may be provided with a centering relief cooperating for example with the outer ring, with the connecting means or with the shaft for centering the drum relative to the axis of rotation of the subassembly.
  • a water pump provided with a mechanism as described above whose rotating member is a paddle wheel.
  • the rotating member may, however, be any type of receiving member or motor, the drive mechanism of the invention being able to transmit power both from the belt to the shaft and from the shaft to the belt.
  • a frame 10 constituting a coolant circuit casing is provided with a barrel 16 forming a cylindrical bearing surface 18 for an inner ring 20 of a bearing 22.
  • the ring 20 is provided with two raceways 24 which define a geometric axis of rotation 26 of the mechanism.
  • the drum 16 also defines an axial opening 28 allowing the passage of a shaft 30.
  • a dynamic seal 32 provides a seal between the shaft 30 and the frame 10, so as to prevent leakage of liquid through the opening.
  • the frame 10 constitutes a fixed element which makes it possible to define a reference radial geometric plane 34 traversed by the shaft 30.
  • a paddle wheel 36 (which has not been shown on the Figures 1A to 1C ).
  • a massive plate 40 which extends radially outwardly and is provided with an end flange 42.
  • the plate is perforated by openings 44 distributed on its surface.
  • the edge 42 of the plate is fitted on a cylindrical seat inner 46 of a one-piece outer ring 48 of the bearing 22, so that the flange 40 constitutes a mechanical connecting member between the shaft 30 the outer ring 48.
  • the outer ring 48 consisting of a steel piece, is located entirely on the reference plane side 34 opposite to the impeller.
  • the outer ring 48 defines an opening in which the barrel 16 is inserted and forms two outer raceways 54 situated opposite the raceways 24 of the inner race 20. These raceways 24, 54 make it possible to house two rows of balls. 56.
  • the bearing thus formed is protected from the outside by two annular seals 60, mounted on the outer ring on either side of the raceways 24, 54 and rubbing on the inner ring 20.
  • the lines load balls of the two rows are preferably inclined relative to a radial plane, and intersect the axis of rotation at two points in two radial planes that frame the raceways.
  • a pulley drum 62 is fixed to the plate 40.
  • This drum comprises a tread 64 with a radial sawtooth profile. It is further provided with a cup 66 which bears on the plate 40.
  • the attachment is provided by axial threaded studs 68 passing through bores 70, 71 provided in the plate and in the cup.
  • the studs 66 are provided with a head received in a recess of the plate and the clamping of the pieces is obtained by means of nuts 72, one of which has been shown on the figure 1D .
  • the cup 66 is also provided with a centering hole 76 in which is housed the end of the shaft 30.
  • the assembly of the mechanism of Figure 1A to 1D is particularly simple.
  • the bearing 22, consisting of the inner ring 20, the outer ring 48, possibly cages (not shown), the two rows of balls 56 and the two seals 60 is mounted in a first step.
  • This arrangement is facilitated by the fact that the outer ring 48 is widely open at both ends, the bearing 46 having a larger diameter than the pitch diameter of the two rows of balls, and even larger than the inside diameter of the raceways 54.
  • the inner ring 20 is fitted on the barrel 16.
  • the subassembly consisting of the shaft 30 and the cup 40 can then be fitted on the interface formed by the inner cylindrical bearing surface 46 of the outer ring 48 and the impeller 36 is fitted to the end of the shaft 30.
  • the end of the shaft 30 is inserted into the centering hole 76 before securing the drum 62 by means of the nuts 72.
  • the raceways 24, 54 are located between the reference plane 34 and a radial plane 74 tangential to the cup, the tread running axially on either side of the raceways.
  • connection between the shaft 30 and the outer ring is constituted by a cup 140 made by stamping a sheet and having a sleeve 142 fitted on the shaft and an outer skirt 144 on which is crimped the outer ring 48.
  • the cup is further provided with punctures 146 which allow the insertion of the pulley drum threaded studs, which are here screws screwing directly into a thread provided in the crevices.
  • the assembly of the device Figures 2A-2D is similar to that of the first embodiment. Firstly, the bearing 22 is assembled on the one hand and the cup on the other hand is fitted onto the shaft. Then we crimp or fret the cup on the outer ring to form the subset. Finally, this subassembly can be assembled on the frame and the impeller (not shown) and the pulley drum can be fixed.
  • FIG. 3A to 3D is shown a third embodiment of the invention, which differs from the previous in that the shaft flares to form a flange 240 which allows a connection by hooping or crimping to the outer ring 48 of the bearing.
  • the flange is provided with threaded holes 242 which allow the screwing of bolts 68 for fixing the pulley drum.
  • the assembly method is simplified here since the step of mounting the shaft on the connection means is eliminated.
  • FIG. 4A to 4D and 5A to 5D is shown a fourth embodiment of the invention, which differs from the previous in that the drum 62 is attached directly to the outer ring 48.
  • the outer ring 48 visible in detail on the Figures 5A to 5D is in fact provided with three ears 480 equispaced at its periphery and each pierced with a bore 482.
  • the outer ring further comprises a cylindrical centering surface 484.
  • the drum 62 is provided with a centering hole 462 cooperating with the bearing 484 to ensure the respective positioning of the parts.
  • the bores 482 of the outer ring allow the fixing of the pulley drum 62 which, unlike the previous embodiments, bears axially directly on the lugs 48.
  • the outer ring is connected to the shaft 30 by through a cup 440.
  • the cup is provided with a central opening 442 for passage of the shaft 30.
  • the end of the shaft is deformed in a crimping operation to form a groove 430 for fixing the cup.
  • the cup is also provided with an outer skirt 444 which is engaged in the outer ring 48.
  • the tread may have any shape suitable for a drive belt, for example a frustoconical shape or with several truncated cones. It may be optionally provided with ridges or other reliefs ensuring better cooperation with the belt.
  • the term belt used throughout the application must be understood generically to include any type of endless flexible link, of any section.
  • the invention is not limited to water pumps, the impeller may be replaced by any type of receiving member to be secured to a pulley driven by a belt.
  • the impeller can also be replaced by a drive member driving the shaft and the pulley drum, and for driving the belt.
  • the order of assembly operations can be changed as needed. In certain circumstances, it may be preferable to mount the shaft on the bearing before mounting the bearing to the frame. In other circumstances, these operations may be reversed.
  • connection means between the shaft and the drum can be of any type ensuring the transmission of torque, for example spokes or arms. Fixing these means of connection to the drum can be done by any means, including crimping, fitting hot or cold, gluing or welding.
  • the interface between the outer ring and the connecting means may be smooth or provided with reliefs, for example flutings.
  • the studs can be in one piece with the connecting means or with the drum.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP20080291007 2007-10-24 2008-10-24 Riemenantriebssystem und Verfahren zur Herstellung desselben Withdrawn EP2053248A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0758554A FR2922974B1 (fr) 2007-10-24 2007-10-24 Mecanisme d'entrainement par courroie et son procede de fabrication.

Publications (1)

Publication Number Publication Date
EP2053248A2 true EP2053248A2 (de) 2009-04-29

Family

ID=39495670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080291007 Withdrawn EP2053248A2 (de) 2007-10-24 2008-10-24 Riemenantriebssystem und Verfahren zur Herstellung desselben

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EP (1) EP2053248A2 (de)
FR (1) FR2922974B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2979395A1 (fr) * 2011-08-24 2013-03-01 Skf Ab Systeme d'entrainement de pompe a eau et procede de montage d'un tel systeme
CN104895669A (zh) * 2015-05-30 2015-09-09 广西玉柴机器股份有限公司 一种多点轴向附加皮带轮安装结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109454B4 (de) * 2017-05-03 2021-03-25 Schaeffler Technologies AG & Co. KG Antriebseinheit einer Kühlmittelpumpe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2160201A5 (de) 1971-11-11 1973-06-22 Skf Ind Trading & Dev
US3934966A (en) 1971-11-11 1976-01-27 Skf Industrial Trading And Development Company, B.V. Cooling water pump, preferably of motor car engines
EP0289958A2 (de) 1987-05-01 1988-11-09 Koyo Seiko Co., Ltd. Wasserpumpe
US6200089B1 (en) 1998-03-26 2001-03-13 Tcg Unitech Aktiengesellschaft Coolant pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100507C1 (en) * 1991-01-10 1992-05-14 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Water pump leakage collector with chamber in belt pulley - which has arresting member on one rim bounding collecting chamber
EP1338797A3 (de) * 2002-02-21 2004-02-04 Aisin Seiki Kabushiki Kaisha Wasserpumpe
JP2004162630A (ja) * 2002-11-14 2004-06-10 Koyo Seiko Co Ltd ウォータポンプ用転がり軸受ユニット
JP2006266187A (ja) * 2005-03-24 2006-10-05 Aisin Seiki Co Ltd ウォータポンプ用羽根車装置及びウォータポンプ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2160201A5 (de) 1971-11-11 1973-06-22 Skf Ind Trading & Dev
US3934966A (en) 1971-11-11 1976-01-27 Skf Industrial Trading And Development Company, B.V. Cooling water pump, preferably of motor car engines
EP0289958A2 (de) 1987-05-01 1988-11-09 Koyo Seiko Co., Ltd. Wasserpumpe
US6200089B1 (en) 1998-03-26 2001-03-13 Tcg Unitech Aktiengesellschaft Coolant pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2979395A1 (fr) * 2011-08-24 2013-03-01 Skf Ab Systeme d'entrainement de pompe a eau et procede de montage d'un tel systeme
CN104895669A (zh) * 2015-05-30 2015-09-09 广西玉柴机器股份有限公司 一种多点轴向附加皮带轮安装结构

Also Published As

Publication number Publication date
FR2922974B1 (fr) 2010-05-07
FR2922974A1 (fr) 2009-05-01

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