US20120183417A1 - Combined blower/rotor for a cooling fan of a motor vehicle - Google Patents

Combined blower/rotor for a cooling fan of a motor vehicle Download PDF

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Publication number
US20120183417A1
US20120183417A1 US13/320,717 US201013320717A US2012183417A1 US 20120183417 A1 US20120183417 A1 US 20120183417A1 US 201013320717 A US201013320717 A US 201013320717A US 2012183417 A1 US2012183417 A1 US 2012183417A1
Authority
US
United States
Prior art keywords
rotor
fan
combination
fastening
rotor combination
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.)
Abandoned
Application number
US13/320,717
Other languages
English (en)
Inventor
Klaus Linnenbrock
Britt Weingand
Klaus Weickenmeier
Peter Bruder
Markus Liedel
Thomas Helming
Jens Ulrich
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIEDEL, MARKUS, LINNENBROCK, KLAUS, BRUDER, PETER, HELMING, THOMAS, ULRICH, JENS, WEICKENMEIER, KLAUS, WEINGAND, BRITT
Publication of US20120183417A1 publication Critical patent/US20120183417A1/en
Abandoned 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub
    • 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
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans

Definitions

  • the invention relates to a fan-rotor combination for a cooling blower of a motor vehicle, in particular with low blower power, wherein the fan-rotor combination has a rotor of an electric motor and a fan fastened to the rotor.
  • the fans are always fastened to the rotor by means of screws.
  • the fan lies on the rotor and the screws fasten the fan to the rotor (see FIG. 1 ).
  • the fan-rotor combination according to the invention should be of simple construction and cheap to manufacture. Furthermore, it should preferably be possible for the fan-rotor combination to be assembled manually without the use of tools or machines and in a short period of time, and said fan-rotor combination should furthermore have a small number of components.
  • the fan-rotor combination may preferably be designed for a low blower power and adapted to the demands of the emerging markets, such as for example a simple and robust design.
  • the object of the invention is achieved by means of a fan-rotor combination for a cooling blower of a motor vehicle.
  • the fan-rotor combination according to the invention has a rotor of a motor or of an electric motor and has a fan fastened to the rotor.
  • the fan is fixed to the rotor without the aid of additional components, in particular screws, or materially separate components, wherein the fan is fastened to the rotor preferably by means of an easily detachable positively locking connection. Said mechanical connection may if appropriate have non-positively locking attributes.
  • the fastening of the fan to the rotor takes place on an axial portion and/or a radial portion of the rotor.
  • the electric motor is preferably an electrically commutated external-rotor electric motor.
  • a mechanical connection between the rotor and the fan is realized exclusively through the respective design of the rotor and/or of the fan.
  • a connecting partner, which is required for the fastening of the fan to the rotor, of the fan and/or of the rotor is a constituent part, in particular a materially integral constituent part, of the fan and/or of the rotor respectively.
  • the connecting devices required for the fastening preferably extend through one another and are if appropriate secured.
  • the securing means are preferably constituent parts of the fan and/or of the rotor and are likewise preferably connected to the fan and/or to the rotor in a materially integral manner, for example by means of webs formed as predetermined breaking points.
  • the fan has a detent device which engages into a corresponding detent device of the rotor.
  • the fan has an elastically flexible snap-in hook which is snapped into a corresponding recess of the rotor.
  • a locking position of the snap-in hook can be secured by means of a locking pin or bolt.
  • the fan and the rotor can be fixed to one another by means of a bayonet locking connection.
  • the bayonet hooks may in turn be secured by means of securing pins or bolts.
  • the fan may have a fastening projection which is preferably composed of plastic and which projects through a passage recess in the rotor.
  • that portion of the fastening projection which projects through the passage recess is deformed, which may be realized for example by means of an electrode, a heating element, a sonotrode or an anvil.
  • the rotor has a fastening lug which extends through a passage recess in the fan. That portion of the fastening lug which projects through the passage recess is deformed, in particular bent over.
  • the fan may have an internal thread which is screwed onto an external thread of the rotor.
  • the embodiments of the invention may self-evidently also be kinematically reversed. Furthermore, they may also, including a kinematic reversal, be combined with one another. Furthermore, the invention is not restricted to the automotive field, but rather may also be applied to other fields such as for example heating blowers or dust extraction hoods.
  • the invention yields a significant cost reduction, because in comparison with the prior art, three components, specifically the screws, are omitted because the function of torque transmission to the fan and the positioning of the fan on the rotor are realized exclusively by means of the design of the fan and of the rotor. In this way, axial installation space for the screw heads is eliminated, as a result of which the application is simplified owing to a reduction in required installation space.
  • the snap-in or pressing-in processes can be carried out in a short time period and with less assembly outlay than a screw connection, as a result of which the assembly time for the fan is reduced. Furthermore, as a result of the fact that the metallic rotor is tightly clasped by a plastic hub, vibrations of the rotor are damped and blower noise is reduced.
  • the fastening concept according to the invention permits manual assembly without additional aids and can therefore be used worldwide without great expenditure. As a result of the omission of components which require great outlay in ensuring quality, the creation of the individual components of the fan fastening according to the invention can be more easily localized.
  • FIG. 1 shows a sectional side view of a fan-rotor combination according to the prior art in an assembled state
  • FIG. 2 shows a sectional side view of a first embodiment according to the invention of a fan-rotor combination before the assembly thereof;
  • FIG. 3 shows a sectional side view of the fan-rotor combination from FIG. 2 in an assembled state
  • FIG. 4 shows a cut-away axial side view of a second embodiment according to the invention of a fan-rotor combination after the assembly thereof;
  • FIG. 5 shows a perspective detail view of the fan-rotor combination from FIG. 4 before the insertion of securing pins
  • FIG. 6 shows a sectional side view of a third embodiment according to the invention of a fan
  • FIG. 7 shows a plan view of a third embodiment according to the invention of a rotor
  • FIG. 8 shows a plan view of the fan from FIG. 6 ;
  • FIG. 9 shows a cut-away sectional side view of a first assembly step of the third embodiment of the fan-rotor combination
  • FIG. 10 shows, analogously to FIG. 9 , a second assembly step of the fan-rotor combination
  • FIG. 11 shows, analogously to FIG. 10 , a third assembly step of the fan-rotor combination
  • FIG. 12 shows, analogously to FIG. 11 , a fourth assembly step of the fan-rotor combination
  • FIG. 13 shows a sectional side view of the third embodiment of the fan-rotor combination in an assembled state
  • FIG. 14 shows a sectional side view of a fourth embodiment according to the invention of a fan-rotor combination before the assembly thereof;
  • FIG. 15 shows a sectional side view of the fan-rotor combination from FIG. 14 in an assembled state
  • FIG. 16 shows a sectional side view of a fifth embodiment according to the invention of a fan-rotor combination before the assembly thereof;
  • FIG. 17 shows a sectional side view of the fan-rotor combination from FIG. 16 in an assembled state
  • FIG. 18 shows a sectional side view of a sixth embodiment according to the invention of a fan-rotor combination before the assembly thereof.
  • FIG. 19 shows a sectional side view of the fan-rotor combination from FIG. 18 in an assembled state.
  • the fan-rotor combination 1 or fan fastening 1 according to the invention illustrated in the drawing is characterized in that the components to be mechanically connected to one another, for example for cooling an internal combustion engine, that is to say a rotor or motor rotor 10 of an electric motor 30 and a fan 20 , are fixed to one another by means of positive locking in the axial direction A and radial direction R without an additional screw.
  • At least one connecting device 100 , 200 for example a detent device such as a detent hook or a detent recess; a snap-in hook; a bayonet hook; a claw; an undercut; a fastening projection such as for example a lug, a dome, a peg, a pin, a bolt, a rib; a thread, a notch etc.—and a device corresponding thereto
  • a connecting device 100 , 200 for example a detent device such as a detent hook or a detent recess; a snap-in hook; a bayonet hook; a claw; an undercut; a fastening projection such as for example a lug, a dome, a peg, a pin, a bolt, a rib; a thread, a notch etc.—and a device corresponding thereto
  • a connecting device(s) serve(s) for fastening the fan 20 to the rotor 10 .
  • the fan 20 has, as a connecting device 200 , at least one but preferably at least two mutually opposite detent hooks 210 which project inwardly from a fan hub 22 and which engage into corresponding connecting devices 100 , designed as detent recesses 110 , of the rotor 10 on the axial portion 13 thereof. It is self-evidently also possible for the detent hooks to be provided on the rotor 10 and for the detent recesses to be provided on the fan 20 .
  • the respective snap-in contour 110 , 120 or detent device 110 , 120 may be of partially, sectionally or fully encircling form.
  • FIGS. 4 and 5 show details of the second embodiment according to the invention of the fan-rotor combination 1 , wherein the respective connecting devices 100 , 200 are formed as passage recesses 120 in a radial portion 14 of the rotor 10 and as snap-in hooks 220 , designed preferably as bending beams, of the fan hub 22 .
  • a radial portion of the fan 20 lies on the radial portion 14 of the rotor 10 , wherein the snap-in hooks 220 project substantially perpendicularly from the radial portion of the fan 20 and engage into the passage recesses 120 of the radial portion 14 of the rotor 10 .
  • the snap-in hooks 220 are preferably distributed substantially over a (segment of a) circle, wherein in each case two directly adjacent snap-in hooks 220 have their backs to one another, that is to say the two hook contours of the snap-in hooks 220 point away from one another. In each case two such adjacent snap-in hooks 220 engage at the longitudinal side into a passage slot 120 (passage recess 120 ) which widens with increasing radius.
  • the snap-in hooks 220 may be secured by means of securing pins 222 , wherein either a securing pin 222 is pushed in between two directly adjacent snap-in hooks 220 , which securing pin, like that mentioned below, may then be materially integrally connected to the fan hub 22 via webs formed as predetermined breaking points, or a separate securing pin 222 may be provided for each snap-in hook 220 .
  • a mount 224 in the form of a guide 224 or support 224 which is preferably formed materially integrally with the fan hub 22 , to be provided for each securing pin 222 .
  • the respective mount 224 extends into the respective passage recess 120 of the rotor 10 , and the corresponding securing pin 222 is pushed in between the respective snap-in hook 220 and the respective mount 224 . It is self-evidently also possible for the snap-in hook 220 and passage recesses 120 to be interchanged.
  • the fan hub 22 has, projecting away from its radial portion in the direction of the rotor 10 , at least one but preferably three bayonet hooks 230 which are arranged on a circular path and which can engage into bayonet recesses 130 , which correspond to said bayonet hooks, of the rotor 13 .
  • the fan 20 has securing pins 232 which are integrally formed therewith by means of webs formed as predetermined breaking points, which securing pins secure a bayonet connection against self-release.
  • securing pins 232 which are integrally formed therewith by means of webs formed as predetermined breaking points, which securing pins secure a bayonet connection against self-release.
  • FIGS. 9 to 12 show such a realization of the bayonet connection.
  • the bayonet hooks 230 are inserted into the bayonet recess 130 until the radial portion of the fan 20 lies on the radial portion 14 of the rotor 10 ( FIG. 9 ).
  • the fan 20 and rotor 10 are then rotated relative to one another about their common axis of rotation A until the bayonet hooks 230 engage under the rotor 10 ( FIG. 10 ). That portion of the respective bayonet recess 130 which is opened up between the respective bayonet hook 230 and the rotor 10 is occupied by the pressing-in of a securing pin 232 ( FIG. 11 ), such that the fan 20 can no longer rotate relative to the rotor 10 ( FIGS. 12 and 13 ).
  • the fastening of the fan 20 to the rotor 10 is realized by means of deformed component regions of the fan 20 (fourth embodiment) and of the rotor 10 (fifth embodiment).
  • the fan 20 and/or the rotor 10 have/has component regions, lugs etc. which are deformed by a joining process (if appropriate thermally assisted, for example heating by means of ultrasound, hot air etc.) and thereby secure the component fastening.
  • a joining process if appropriate thermally assisted, for example heating by means of ultrasound, hot air etc.
  • a reverse approach in each case may self-evidently also be used.
  • the fan 20 has, projecting from its radial portion in the direction of the rotor 10 , at least one fastening projection 240 (connecting device 200 ) which may be designed for example as a pin, bolt, rib, dome or peg.
  • the fastening projections 240 of the fan 20 are plugged through passage recesses 140 (connecting device 100 ) in the radial portion 14 of the rotor 10 , and the portions which extend through the passage recesses 140 are subsequently plastically deformed by means of a deformation element 40 , which may take place for example using the abovementioned method.
  • the rotor 10 has, projecting away from its radial portion 14 , at least one lug 150 (connecting device 100 ); the fan 20 has at least one passage recess 250 (connecting device 200 ) which corresponds to said lug and by means of which the fan 20 can be threaded onto the lug(s) 150 .
  • those portions of the lugs 150 which extend through the passage recesses 250 are bent over and thereby fix the fan 20 to the rotor 10 .
  • the fan 20 or the fan hub 22 and the rotor 10 have, as corresponding connecting devices 100 , 200 , in each case one thread 160 , 260 by means of which the fan 20 and rotor 10 can be directly screwed to one another.
  • the respective thread 160 , 260 is an integral constituent part of the respective component.
  • the threads are preferably oriented such that a rotating rotor 10 “screws into” the fan 20 .
  • All the embodiments of the invention may comprise domes, ribs, beads, hooks, notches, bulges etc. integrated on the rotor 10 and/or on the fan 20 for the purpose of undercut anchoring, torque transmission, positioning and/or simplification of assembly or joining processes.
  • the fastening of the rotor 10 and fan 20 may be secured against self-release of component parts (in particular snap-in hooks) by means of additional pressing, calking, (if appropriate thermally assisted) deformation or shearing-off of component regions (for example securing pins or bolts).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
US13/320,717 2009-05-15 2010-04-28 Combined blower/rotor for a cooling fan of a motor vehicle Abandoned US20120183417A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009003142.1 2009-05-15
DE102009003142A DE102009003142A1 (de) 2009-05-15 2009-05-15 Lüfter-Rotor-Verbindung für ein Kühlgebläse eines Kraftfahrzeugs
PCT/EP2010/055673 WO2010130577A2 (de) 2009-05-15 2010-04-28 Lüfter-rotor-verbindung für ein kühlgebläse eines kraftfahrzeugs

Publications (1)

Publication Number Publication Date
US20120183417A1 true US20120183417A1 (en) 2012-07-19

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US13/320,717 Abandoned US20120183417A1 (en) 2009-05-15 2010-04-28 Combined blower/rotor for a cooling fan of a motor vehicle

Country Status (7)

Country Link
US (1) US20120183417A1 (ko)
EP (1) EP2430728A2 (ko)
JP (1) JP2012526941A (ko)
KR (1) KR20120028327A (ko)
CN (1) CN102804557A (ko)
DE (1) DE102009003142A1 (ko)
WO (1) WO2010130577A2 (ko)

Cited By (9)

* Cited by examiner, † Cited by third party
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US20140334952A1 (en) * 2012-01-28 2014-11-13 Brose Fahrzeugteile Gmbh & Co. Kg, Wuerzburg Radiator fan of a motor vehicle
US20150078937A1 (en) * 2012-03-22 2015-03-19 Valeo Systemes Thermiques Ventilation Device
CN108028577A (zh) * 2015-10-15 2018-05-11 大金工业株式会社 电动机和送风装置
US20190107117A1 (en) * 2017-10-10 2019-04-11 Eric Rafalko Hub for a fluid-flow control system
US20190186495A1 (en) * 2016-06-24 2019-06-20 Nidec Servo Corporation Blower
US11155335B2 (en) * 2014-11-10 2021-10-26 SZ DJI Technology Co., Ltd. Driving device, propeller and propulsion system
IT202000014392A1 (it) * 2020-06-16 2021-12-16 Baruffaldi Spa Rotore esterno in materiale plastomagnetico
US20220014055A1 (en) * 2020-07-13 2022-01-13 Milwaukee Electric Tool Corporation Rotor assembly for an electric motor
US11742710B2 (en) 2018-11-29 2023-08-29 Milwaukee Electric Tool Corporation Rotor assembly for an electric motor

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FR3012968B1 (fr) * 2013-11-13 2016-01-08 Parrot Drone a voilure tournante avec helices a entrainement direct et montage rapide
CN105090113B (zh) * 2014-05-22 2018-02-09 台达电子工业股份有限公司 风扇转子
JP6450538B2 (ja) * 2014-08-19 2019-01-09 山洋電気株式会社 ファンおよびファンの製造方法
DE102015222005A1 (de) * 2015-11-09 2017-05-11 Mahle International Gmbh Fördereinrichtung
CN107035719B (zh) * 2016-02-03 2020-09-04 奇鋐科技股份有限公司 扇叶改良结构
CN107939732A (zh) * 2017-11-28 2018-04-20 斯凯伦动力设备科技（兴化）有限公司 一种应用于发电机组装的高稳定性叶片结构
CN108105149A (zh) * 2017-12-18 2018-06-01 广东威灵电机制造有限公司 风轮的轮毂、风轮及风机组件
ES2910130T3 (es) * 2018-05-04 2022-05-11 CASO Holding GmbH Dispositivo de purificación de aire, en particular para vapores de cocción, y uso del mismo
CN108768070B (zh) * 2018-06-21 2021-09-24 广东威灵电机制造有限公司 电机风叶、无刷电机及其转子组件、食物料理机
FR3115503B1 (fr) * 2020-10-22 2022-11-11 Valeo Systemes Thermiques Dispositif de ventilation pour module de refroidissement de véhicule automobile
DE102022101781A1 (de) * 2022-01-26 2023-07-27 Ebm-Papst Mulfingen Gmbh & Co. Kg Lüfterbaugruppe

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Cited By (17)

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Publication number Priority date Publication date Assignee Title
US10094386B2 (en) * 2012-01-28 2018-10-09 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft. Radiator fan of a motor vehicle
US20140334952A1 (en) * 2012-01-28 2014-11-13 Brose Fahrzeugteile Gmbh & Co. Kg, Wuerzburg Radiator fan of a motor vehicle
US20150078937A1 (en) * 2012-03-22 2015-03-19 Valeo Systemes Thermiques Ventilation Device
US9835175B2 (en) * 2012-03-22 2017-12-05 Valeo Systemes Thermiques Ventilation device
US11155335B2 (en) * 2014-11-10 2021-10-26 SZ DJI Technology Co., Ltd. Driving device, propeller and propulsion system
US11005333B2 (en) * 2015-10-15 2021-05-11 Daikin Industries, Ltd. Electric motor having a stator with a radially outside rotor with the rotor having a fan mounting portion comprising a noncontact region and a contract region configured to contact a mouting surface of a fan
CN108028577A (zh) * 2015-10-15 2018-05-11 大金工业株式会社 电动机和送风装置
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EP3364527A4 (en) * 2015-10-15 2019-05-01 Daikin Industries, Ltd. ELECTRIC MOTOR AND FAN
US20190186495A1 (en) * 2016-06-24 2019-06-20 Nidec Servo Corporation Blower
US10670042B2 (en) * 2017-10-10 2020-06-02 Deere & Company Hub for a fluid-flow control system
US20190107117A1 (en) * 2017-10-10 2019-04-11 Eric Rafalko Hub for a fluid-flow control system
US11742710B2 (en) 2018-11-29 2023-08-29 Milwaukee Electric Tool Corporation Rotor assembly for an electric motor
IT202000014392A1 (it) * 2020-06-16 2021-12-16 Baruffaldi Spa Rotore esterno in materiale plastomagnetico
EP3926791A1 (en) * 2020-06-16 2021-12-22 Baruffaldi S.p.A. External rotor made of plastic-magnetic material
US20220014055A1 (en) * 2020-07-13 2022-01-13 Milwaukee Electric Tool Corporation Rotor assembly for an electric motor
WO2022015684A1 (en) * 2020-07-13 2022-01-20 Milwaukee Electric Tool Corporation Rotor assembly for an electric motor

Also Published As

Publication number Publication date
WO2010130577A2 (de) 2010-11-18
DE102009003142A1 (de) 2010-11-18
KR20120028327A (ko) 2012-03-22
JP2012526941A (ja) 2012-11-01
CN102804557A (zh) 2012-11-28
EP2430728A2 (de) 2012-03-21
WO2010130577A3 (de) 2011-12-29

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