EP2573382A2 - Machine électrique, notamment dispositif de démarrage, ainsi que procédé de fabrication d'un agencement de pièce de maintien d'une machine électrique - Google Patents

Machine électrique, notamment dispositif de démarrage, ainsi que procédé de fabrication d'un agencement de pièce de maintien d'une machine électrique Download PDF

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Publication number
EP2573382A2
EP2573382A2 EP12184842A EP12184842A EP2573382A2 EP 2573382 A2 EP2573382 A2 EP 2573382A2 EP 12184842 A EP12184842 A EP 12184842A EP 12184842 A EP12184842 A EP 12184842A EP 2573382 A2 EP2573382 A2 EP 2573382A2
Authority
EP
European Patent Office
Prior art keywords
screw
bearing
rotor
axial
electric machine
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Withdrawn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
EP12184842A
Other languages
German (de)
English (en)
Other versions
EP2573382A3 (fr
Inventor
Kennedy Santos
Juergen Kugler
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.)
SEG Automotive Germany 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
Publication of EP2573382A2 publication Critical patent/EP2573382A2/fr
Publication of EP2573382A3 publication Critical patent/EP2573382A3/fr
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/006—Assembling or mounting of starting devices

Definitions

  • the object is to design a support bearing assembly that builds axially shorter.
  • the support bearing assembly which is arranged in the bearing cap and thereby supports the rotor shaft is held by a screw by a screw thread in a receiving thread of the bearing cap and thereby the screw both a radial bearing force and a axial bearing force causes. This makes it possible to reduce the axial length.
  • a bore or a cylindrical cavity is introduced in this, which is preferably designed as a blind hole.
  • the actual adaptation takes place by the sleeve inserted into the cylindrical cavity, which is usually made of a bearing metal.
  • the bushing can receive axial forces with its end facing the rotor, it is provided that the bushing projects beyond an outer contour of the screw element.
  • the cylindrical cavity has a stop for the bush. So that the entire bottom surface of the cylindrical cavity does not have to be machined, the bottom of the cylindrical cavity has an axially different positioned portion.
  • the screw element has an outer side (with a substantially cylindrical outer circumference) with two rotational axial ends. At the end facing the rotor there is an outer side section without thread and at the end facing away from the rotor an outer side section with thread.
  • the screw element Due to the fact that the screw element has a convex outer contour at the end facing away from the rotor, a favorable mechanical material tension state in the bottom of the screw element is achieved, for example, in the case where the bottom of the screw element is concave and this and also a screw drive is produced by forging or extrusion screw element.
  • the already mentioned screw drive of the screw member preferably has an inner contour, so that compared to a screw drive with outer contour a significantly longer axial engagement possibility is given.
  • the bearing cap has a remote from the rotor outer contour and the outermost axial end of the bearing cap and the screw are either axially gleichholz or the outermost axial end of the bearing cap dominates the screw.
  • the screw should be secured against rotation.
  • the screw is secured either by means of molding or by force or by means of material connection against rotation.
  • Positive locking can thereby be made possible by, for example, an additional mechanical element, such as a split pin or fuse wire is used, which allows a backup between the bearing cap and screw.
  • a pin could be integrally formed wegierd axially behind, having a transverse bore, for example, receives a fuse wire, thereby enabling the fuse.
  • a positive connection can also be made, for example, by the cramping is caulked.
  • the bearing cap and also the screw in the thread pairing may have a self-locking or self-locking thread, so that, for example by force locking a fuse is brought about.
  • Material bond can be made possible for example by an adhesive (adhesive).
  • This adhesive is preferably a microencapsulated adhesive known manufacturer, which allows the material in the thread.
  • a backup is also by a Weld point possible, which is placed in the joint of the thread (adhesion).
  • the screw is first screwed into the receiving thread of the bearing cap so far that no play between the rotor shaft and the screw is present and then the screw is moved against the screwing.
  • a very narrow axial play is adjustable. This has an effect on the brush wear, so that this is very small by this measure.
  • the screw is moved between 45 and 240 degrees against the screwing.
  • This is advantageous insofar as taking into account that a screw drive is used which has a hexagonal feature (hexagon socket, internal serrated tooth).
  • the proposed movement of the screw against the screwing provided to create a game between 0.1 and 0.5 mm. This game is optimal for brush wear.
  • FIG. 1 shows an electric machine 10 in the form of a starting device in a longitudinal section.
  • This starter has, for example, a starter motor 13 and a Vorspuraktuator 16 (eg., A relay or starter relay).
  • the starter motor 13 and the electric Vorspuraktuator 16 are fixed to a common drive end plate 19.
  • the starter motor 13 is functionally to drive a starter pinion 22 when it is meshed in the ring gear 25 of the internal combustion engine, not shown here.
  • the starter motor 13 has a housing 26 with a pole tube 28 which carries on its inner circumference pole 31. A stator 29 is thereby formed. The pole 31 in turn surrounds a rotor 37 (armature), which has a built-up of lamellae anchor packet 43 and an armature winding arranged in grooves.
  • armature armature
  • the commutator 52 and its commutator fins 55 are energized by carbon brushes 58 during operation.
  • the support bearing arrangement 66 between the starting pinion 22 and the armature packet 43 is constructed as follows: In the pole tube 28, a bearing flange 68 is inserted therein Case is a ring gear part of a planetary gear 70.
  • the bearing flange 68 has a central receptacle 72 which carries a substantially cylindrical bushing 75.
  • the receptacle 72 has a board 78, which prevents a displacement of the bearing bush 75 in the direction of the starter pinion 22.
  • the drive shaft 44 is supported. This purpose is served by a special, particularly smooth bearing section 81.
  • the support bearing arrangement 66 is adapted to cause both axial and radial bearing forces on the mounted part.
  • the support bearing assembly 69 is constructed so that a shaft journal 85, which is embodied for example in one piece with the drive shaft 44, is mounted in a bushing 88.
  • the bushing 88 in turn is received in a cup-shaped screw member 91.
  • the screw member 91 is seated in a housing 26 which closes the bearing cap 60.
  • the screw member 91 has on its outer circumference a screw thread 94; the bearing cap 60 has a cylindrical inner contour 97, which is provided on its inner circumference with a receiving thread 100.
  • the support bearing assembly 69 after FIG. 1 is in FIG. 2 enlarged and shown in a section. It can be clearly seen that the drive shaft 44 is received with its shaft 85 in the bush 88. The bushing 88 takes on a proportion of the weight of the drive shaft 44 and other parts of the rotor 37 and thereby generates a radial bearing force F r . Due to the fact that the rotor 37 is to be mounted between the two support bearing arrangements 66 and 69 with very little play, positions occur in which each of the mentioned support bearing arrangements 66 and 69 also causes axial bearing forces F a as a result of the situation. In the embodiment according to FIG. 2 is the axial bearing force F a via an unspecified here end face of the sleeve 88 to the drive shaft 44 and the end face 103 is transmitted (system of the socket on the front page).
  • an electric machine 10 in particular designed as a starting device, disclosed with a stator 29 and a radially disposed within the stator 29 rotor 37 with a drive shaft 44, each with a support bearing assembly 66 and 69 on each mosaxialen side of the rotor 37, wherein each support bearing assembly 66 and 69 is adapted to effect both radially and rotationally axial directions bearing forces F a and F r , wherein a support bearing assembly 69 in a bearing cap 60 and thereby the drive shaft 44 is supported, wherein a screw 91 by means of a Einschraubgewindes 94 is held in a receiving thread 100 of the bearing cap 60.
  • the Screw 91 causes both a radial bearing force F r and an axial bearing force F a .
  • the transmitted via the sleeve 88 bearing forces F a and F r are ultimately effected by the screw 91 by the sleeve 88 is supported in the screw 91 and thereby transmits said bearing forces.
  • the axial bearing force F a is transmitted to the screw element 91, for example in the case of a press fit of the bush 88 via its cylindrical cavity 106 (for example a bore).
  • the already mentioned cylindrical cavity 106 in the screw 91 is as in FIG. 2 shown preferably designed as a blind hole. In this cylindrical cavity 106, the bush 88 is seated.
  • the sleeve 88 projects with a projection 109 via an outer contour 112 of the screw 91 over. This serves to ensure that an axial bearing force F a is transmitted via the bush 88 to the screw 91 (smaller effective radius).
  • the cavity 106 of the screw 91 has the aforementioned stop 115 on which the sleeve 88 is applied.
  • a portion of the bottom 116 of the blind hole or the cavity 106 is an axially differently positioned bottom portion 118. This bottom portion 118 is axially back against the stop 115 such that this bottom portion 118 relative to the stop 115 further from the abutment or contact surface 103rd is removed.
  • the already mentioned outer contour 112 of the screw 91 has two rotational axial ends 120 and 121.
  • the rotor 37 directed end 121 has an outer side portion 125 without thread (smooth cylindrical) and facing away from the rotor 37 end 120 has an outer side portion 127 with a thread 94.
  • the screw 91 has at the end remote from the rotor 37 120 a convex outer contour 130.
  • a screw drive 133 attachment or engagement contour for torque-transmitting tools
  • the screw drive is here in the example as réelleviel leopard, sometimes referred to as hexalobular, executed.
  • this screw drive 133 may also be designed as a hexagon socket or other drive.
  • the bearing cap 60 has a remote from the rotor 37 outer contour 140, and the outer axial end 143 of the bearing cap 60 and the screw 91 are either axially gleichholz or the outermost axial end 143 of the bearing cap 60, the end 120 of Screw member 91 projects beyond, so that the outermost axial end 143 of the bearing cap 60 from the starter pinion 22 is farther than the end 120 of the screw 91th
  • FIG. 2 It is shown that the previously mentioned adhesive 150 is applied to the screw 91 or its portion 127 with the screw 94. If the screw 91 is screwed with the applied adhesive 150 in the receiving thread 100 of the bearing cap 60, this leads to a cohesive security.
  • FIG. 3 a bush 88 with a collar 155 on the contact surface 103 of the drive shaft 44 shown.
  • the effect of the axial bearing force F a takes place via the collar 155 between the contact surface and the end 121 of the screw 91.
  • FIG. 4 the method for producing a support bearing assembly 69 is shown.
  • a stator 29 is provided and a rotor 37 is arranged with its drive shaft 44 radially inside the stator, wherein a support bearing arrangement 66, 69 is set up on a respective rotational axial side of the rotor.
  • Each support bearing assembly 66, 69 causes in the radial and in the axial axial direction bearing forces F r , F a .
  • a support bearing assembly 69 acts in a bearing cap 60; the drive shaft 44 is supported.
  • a screw 91 is screwed thereto by means of a screw thread 94 having a pitch in a receiving thread 100 of the bearing cap 60.
  • the screw 91 causes both a radial bearing force F r and an axial bearing force F a (S1).
  • this is the screw 91 so far into the receiving thread Screwed 100 of the bearing cap 60 that no clearance between the rotor shaft or drive shaft 44 and the screw 91 and the sleeve 88 is present (S2).
  • the screw 91 is moved counter to the screwing (S3, generate a game).
  • the screwing-in direction is defined in the axial direction of rotation, specifically from the orientation, such that the screwing-in direction is oriented from the commutator 52 to the starting pinion 22.
  • FIG. 3 by solidifying the adhesive 150, S4.
  • the screw member 91 When turning the screw 91 against the screwing the screw member 91 is preferably rotated back between 45 and 240 degrees. As a result, a permissible clearance between the rotor shaft and the screw element is set. This clearance leads to a small distance between the bushing 88 and the contact surface 103 in the final state, provided that the drive shaft 44 is completely displaced in the direction of the starter pinion 22. By this turning back of the screw 91, the game is adjusted so that this is between 0.1 and 0.5 mm.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Frames (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP12184842.8A 2011-09-23 2012-09-18 Machine électrique, notamment dispositif de démarrage, ainsi que procédé de fabrication d'un agencement de pièce de maintien d'une machine électrique Withdrawn EP2573382A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011083263A DE102011083263A1 (de) 2011-09-23 2011-09-23 Elektrische Maschine, insbesondere Startvorrichtung, sowie Verfahren zum Herstellen einer Stützlageranordnung einer elektrischen Maschine

Publications (2)

Publication Number Publication Date
EP2573382A2 true EP2573382A2 (fr) 2013-03-27
EP2573382A3 EP2573382A3 (fr) 2017-12-06

Family

ID=46963511

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EP12184842.8A Withdrawn EP2573382A3 (fr) 2011-09-23 2012-09-18 Machine électrique, notamment dispositif de démarrage, ainsi que procédé de fabrication d'un agencement de pièce de maintien d'une machine électrique

Country Status (3)

Country Link
EP (1) EP2573382A3 (fr)
CN (1) CN103023189B (fr)
DE (1) DE102011083263A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001379A (zh) * 2012-12-30 2013-03-27 台州市博洋机电有限公司 一种外转子电机
DE102013207875A1 (de) * 2013-04-30 2014-10-30 Robert Bosch Gmbh Startvorrichtung für eine Brennkraftmaschine
CN111911534A (zh) * 2020-07-01 2020-11-10 江苏理工学院 一种自动触发杠杆式保护轴承装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222907B4 (de) * 2013-11-11 2021-08-12 Seg Automotive Germany Gmbh Startvorrichtung für eine Brennkraftmaschine
DE102014214949B4 (de) * 2014-07-30 2022-11-24 BSH Hausgeräte GmbH Haushalt-Wäschebehandlungsmaschine mit einer durch einen Elektromotor antreibbaren Wäschetrommel und Verfahren zum Montieren
CN104179617B (zh) * 2014-08-08 2016-03-16 毅联实业(上海)有限公司 气起动马达的齿轮推进装置
CN105914960B (zh) * 2016-06-30 2018-02-09 江苏朗信电气有限公司 一种汽车散热风扇电机的转子间隙调整装置
WO2023160873A1 (fr) 2022-02-28 2023-08-31 Sew-Eurodrive Gmbh & Co. Kg Entraînement avec un moteur électrique

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3216448A1 (de) 1982-05-03 1983-11-03 Robert Bosch Gmbh, 7000 Stuttgart Andrehvorrichtung fuer brennkraftmaschinen

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US2501060A (en) * 1945-09-17 1950-03-21 R D Fageol Co Vibration damping device
DE2102679C2 (de) * 1971-01-21 1982-12-30 Papst-Motoren GmbH & Co KG, 7742 St Georgen Elektro-Kleinmotor für einen Lüfter
DE2809390C2 (de) * 1978-03-04 1984-09-13 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen Elektrisches Antriebsaggregat, insbesondere für Wischermotor
DE3044417A1 (de) * 1980-11-26 1982-07-01 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum erfassen und einstellen des axialen ankerspiels von elektromotoren und vorrichtung zur durchfuehrung des verfahrens
DE3150572A1 (de) * 1981-12-21 1983-06-30 Siemens AG, 1000 Berlin und 8000 München Getriebemotor, insbesondere elektromotorischer fensterheber-antrieb
DE8905218U1 (de) * 1989-04-25 1990-02-22 Siemens AG, 1000 Berlin und 8000 München Motorantrieb mit Begrenzung des Axialspiels der Welle
US5254893A (en) * 1992-01-30 1993-10-19 Ide Russell D Shaft support assembly for use in a polygon mirror drive motor
DE19954966A1 (de) * 1999-11-16 2001-06-07 Bosch Gmbh Robert Elektrische Antriebseinheit
US6357927B1 (en) * 2000-08-24 2002-03-19 Spicer Technology, Inc. End play preload adjusting assembly for bearings
DE10042405A1 (de) * 2000-08-30 2002-03-21 Bosch Gmbh Robert Lageraufnahme
DE102004012076A1 (de) * 2004-03-12 2005-09-29 Robert Bosch Gmbh Rotationsantrieb
DE102004041074A1 (de) * 2004-08-25 2006-03-02 Robert Bosch Gmbh Elektrische Maschine mit einem axialen Federelement
DE102004049105B4 (de) * 2004-10-07 2006-11-02 Ims Gear Gmbh Lagerelement
FR2952146B1 (fr) * 2009-10-29 2011-11-25 Messier Dowty Sa Dispositif de liaison a jeu controle

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE3216448A1 (de) 1982-05-03 1983-11-03 Robert Bosch Gmbh, 7000 Stuttgart Andrehvorrichtung fuer brennkraftmaschinen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103001379A (zh) * 2012-12-30 2013-03-27 台州市博洋机电有限公司 一种外转子电机
CN103001379B (zh) * 2012-12-30 2015-11-11 台州市博洋机电有限公司 一种外转子电机
DE102013207875A1 (de) * 2013-04-30 2014-10-30 Robert Bosch Gmbh Startvorrichtung für eine Brennkraftmaschine
DE102013207875B4 (de) * 2013-04-30 2021-03-18 Seg Automotive Germany Gmbh Startvorrichtung für eine Brennkraftmaschine
CN111911534A (zh) * 2020-07-01 2020-11-10 江苏理工学院 一种自动触发杠杆式保护轴承装置
CN111911534B (zh) * 2020-07-01 2021-10-19 江苏理工学院 一种自动触发杠杆式保护轴承装置

Also Published As

Publication number Publication date
EP2573382A3 (fr) 2017-12-06
DE102011083263A1 (de) 2013-03-28
CN103023189A (zh) 2013-04-03
CN103023189B (zh) 2015-12-02

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