WO2021104707A1 - Ensemble entraîné par moteur électrique pour un véhicule - Google Patents

Ensemble entraîné par moteur électrique pour un véhicule Download PDF

Info

Publication number
WO2021104707A1
WO2021104707A1 PCT/EP2020/076192 EP2020076192W WO2021104707A1 WO 2021104707 A1 WO2021104707 A1 WO 2021104707A1 EP 2020076192 W EP2020076192 W EP 2020076192W WO 2021104707 A1 WO2021104707 A1 WO 2021104707A1
Authority
WO
WIPO (PCT)
Prior art keywords
hub
unit
grooves
drive shaft
knurl
Prior art date
Application number
PCT/EP2020/076192
Other languages
German (de)
English (en)
Inventor
Paul Wiebe
Michael JÜRGING
Manfred Rüffer
Hans-Michael Koppel
Thomas Oeffner
Erich Schleuning
Original Assignee
Continental Teves Ag & Co. Ohg
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 Continental Teves Ag & Co. Ohg filed Critical Continental Teves Ag & Co. Ohg
Publication of WO2021104707A1 publication Critical patent/WO2021104707A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/14—Provisions for readily assembling or disassembling
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/064—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end non-disconnectable
    • F16D1/072—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end non-disconnectable involving plastic deformation
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0852—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft
    • F16D1/0858—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping between the mating surfaces of the hub and shaft due to the elasticity of the hub (including shrink fits)

Definitions

  • the invention relates to an electric motor-driven unit for a vehicle, in particular a vacuum pump, for example for supplying a pneumatic brake booster or a brake dust extraction system.
  • Modern vehicles have many units, which are driven by electric drive units or electric motors via rotating drive shafts via torque-transmitting shaft-hub connections.
  • Non-positive clamping connections with the use of separate screw elements are complex to assemble and are particularly prone to imbalance errors.
  • the object is to propose an improved unit with a non-positive shaft-hub connection produced via a press fit, which enables reduced assembly forces and improved durability even with coarser tolerances.
  • the invention provides that the drive shaft has a knurl in the connection area with the hub and the hub has at least one axially aligned groove in its fastening bore.
  • the invention can be used particularly effectively if the unit comprises at least two hubs which are arranged one behind the other on the same knurl. In this way, the knurl is spared in the area of the groove of the installed hub and is guaranteed to be undamaged for the other, subsequently installed hub. This guarantees a predictable, safe grouting of both hubs, with a predictable behavior during assembly and operation.
  • the hubs can be arranged on the drive shaft rotated by 180 ° about the orthogonal O of the plane of symmetry S running through the axis of rotation D.
  • the two hubs can be designed identically, which is advantageous in terms of manufacture and assembly, in order to drive a connecting rod drive, for example.
  • the shaft-hub connection according to the invention can be used particularly effectively in the case of strongly changing load cases if the hub is designed, for example, as an eccentric.
  • a preferred development of the invention provides that the groove base of the groove is provided at a distance from the lateral surface of the fastening bore in the radial direction in such a way that there is a clearance fit or a guaranteed radial distance between the groove base and the knurl.
  • the expected assembly and pressing forces can be calculated in advance in a particularly reliable manner.
  • a further development of the invention provides that at least two axial grooves, which are spaced apart from one another in the circumferential direction, are arranged in the fastening bore of the hub.
  • the grooves are designed to be mirror-symmetrical with respect to the plane of symmetry of the eccentric.
  • the grooves are designed to be axially symmetrical and offset in a circumferential direction in relation to the plane of symmetry of the eccentric. In this way, particularly when using two hubs, it can be ensured that the grooves of the two hubs do not overlap in the circumferential direction in the installed state so that each hub on the drive shaft has the same torsional strength and the same assembly forces are required. Early failures due to insufficient adhesion at the press point are effectively avoided.
  • a further embodiment provides that at least three axial grooves spaced from one another in the circumferential direction are arranged in the fastening bore of the hub.
  • the cumulative distances between the grooves in the circumferential direction can be larger than or equal to the cumulative widths of the grooves.
  • the corrugated hub connection according to the invention can be used particularly effectively in a vacuum pump, in particular for supplying vacuum to a braking device in a motor vehicle.
  • FIG. 1 shows a generic unit driven by an electric motor using the example of a vacuum pump.
  • 2 shows an embodiment of the drive of a vacuum pump according to FIG. 1, each with two mirror-symmetrical grooves formed in the mounting hole of the eccentric with respect to the plane of symmetry of the eccentric, in a three-dimensional exploded view (a) and as a cross-section (b) in the assembly.
  • FIG. 3 shows a further embodiment of the drive of a vacuum pump according to FIG. 1, each with two axially symmetrical grooves that are circumferentially offset in relation to the plane of symmetry of the eccentric in the mounting hole of the eccentric in a three-dimensional exploded view (a) and as a cross section (b) in the assembly.
  • FIGS. 4 to 7 show, greatly simplified, different embodiments of the hubs, each with a single hub (a) and in the assembly (b), with two hubs mounted offset from one another on the drive shaft.
  • FIG. 1 shows a generic unit 1 using the example of a vacuum pump for supplying a pneumatic brake booster for the hydraulic brake system of a motor vehicle.
  • An electric drive unit 2 attached to the housing of the unit 1 drives two opposing connecting rods 12, 12 'mounted on it via roller bearings 11, 11' via an eccentric drive, which transfer their movement to two oppositely arranged membrane units.
  • the eccentric drive comprises eccentrics 5, 5 ', which are fixed as hubs in a non-positive manner and rotationally test with axial fastening bores 4, 4' with a press fit on a drive shaft 3 rotating about the axis of rotation D.
  • the two eccentrics or hubs (5, 5 ') are of identical design and are positioned in mirror-inverted fashion directly next to one another on the drive shaft 3. For this purpose, they are positioned rotated by 180 ° around the orthogonals 0 of the plane of symmetry S running through the axis of rotation D, so that their respective axial end faces 15, 15 'lie on top of one another and the respective rear faces 16, 16' face one another.
  • Fig. 2
  • FIG. 2 shows a first embodiment of the shaft-hub connection of an eccentric drive according to FIG.
  • the drive shaft 3 has a knurl 6 with grooves 10 aligned axially parallel to the axis of rotation D.
  • two opposing axially aligned grooves 7, 7' are formed in the fastening bore 4 of the hub 5.
  • the grooves 7, 7 ' are preferably designed in such a way that the respective groove base 8, 8' is spaced apart in the radial direction from the knurl 6, so that there is a clearance fit construction principle of the embodiment described above in these areas.
  • FIG. 5 The construction principle of the embodiment described above is also illustrated by FIG. 5.
  • FIG. 3 Another embodiment of the shaft-hub connection is shown in FIG. 3, which is also shown in FIG. 6 for the sake of clarity.
  • the two grooves 7, 7 ' are aligned essentially plane-symmetrically to the plane of symmetry S of the eccentric 5
  • the two grooves 7, 7' in the present embodiment are only axially symmetric to the axis of rotation D and around an offset angle 13 is arranged rotated in the circumferential direction to the plane of symmetry S.
  • the offset angle is 1345 °.
  • the grooves of the two eccentrics or hubs 5, 5 'do not overlap in the circumferential direction during assembly.
  • an area of the knurl 6 that is recessed by the grooves 7, 7 'of the first hub 5 and is thus guaranteed undamaged is available in its original form for pressing with the remaining lateral surface 9 of the following hub 5'.
  • the groove base 8 of the groove 7 is provided at a distance in the radial direction from a lateral surface 9 of the fastening bore 4 such that there is a clearance fit, preferably always a small distance, between the groove base 8 and the serrated cross-sectional profile of the knurl 6.
  • FIG. 5 illustrates the construction principle of the embodiment according to FIG.
  • the two opposing grooves 7, 7 ' are designed to be mirror-symmetrical with respect to a plane of symmetry S of the eccentric or of the hub 5. This leads to the fact that the grooves of the two hubs 5, 5 'completely overlap in the circumferential direction when assembled.
  • Such an embodiment can be suitable, for example, in cases where, due to certain material combinations, processing processes or operating conditions, an increased oversize is to be expected particularly frequently, when the risk of insufficient torque transferability is rather low. Unwanted force peaks can be reliably avoided by such a construction.
  • Fig. 6 illustrates the construction principle of the embodiment according to FIG.
  • the two opposing grooves 7, 7 ' are designed to be mirror-symmetrical with respect to a plane of symmetry S of the eccentric or of the hub 5. This leads to the fact that the grooves of the two hubs 5, 5 'completely overlap in the circumferential direction when assembled.
  • Such an embodiment can be suitable, for example, in cases where,
  • FIG. 6 illustrates the construction principle of the particularly universally applicable embodiment of the shaft-hub connection according to FIG. 3.
  • FIG. 3 shows a further embodiment of the shaft-hub connection, which has improved centering, in particular under load.
  • the grooves 7, 7 ‘, 7 ′′ are, as in the embodiment according to FIG. Due to their uneven number and uniform circumferential distribution, the grooves of the two hubs 5 and 5 Vietnamese do not overlap during assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

L'invention concerne un ensemble entraîné par moteur électrique (1) pour un véhicule, comprenant au moins une unité d'entraînement électrique (2) comportant au moins un arbre d'entraînement (3) avec un axe de rotation (D), l'arbre d'entraînement (3) s'engageant par ajustement avec serrage dans un alésage de fixation (4) d'au moins un moyeu (5) et étant ainsi relié par frottement au moyeu (5). Selon l'invention, afin qu'une telle liaison arbre-moyeu par frottement résultant d'un ajustement avec serrage assure des forces d'assemblage réduites et une durée de vie accrue même à des tolérances plus importantes, l'arbre d'entraînement (3) comprend une molette (6) dans la zone de liaison avec le moyeu (5), et le moyeu (5) comprend au moins une rainure (7) orientée axialement dans l'alésage de fixation (4).
PCT/EP2020/076192 2019-11-25 2020-09-18 Ensemble entraîné par moteur électrique pour un véhicule WO2021104707A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019218196.1A DE102019218196A1 (de) 2019-11-25 2019-11-25 Elektromotorisch angetriebenes Aggregat für ein Fahrzeug
DE102019218196.1 2019-11-25

Publications (1)

Publication Number Publication Date
WO2021104707A1 true WO2021104707A1 (fr) 2021-06-03

Family

ID=72615852

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/076192 WO2021104707A1 (fr) 2019-11-25 2020-09-18 Ensemble entraîné par moteur électrique pour un véhicule

Country Status (2)

Country Link
DE (1) DE102019218196A1 (fr)
WO (1) WO2021104707A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256967A (en) * 1963-04-04 1966-06-21 Fichtel & Sachs Ag Sheet metal clutch disc and hub
US4376333A (en) * 1978-06-21 1983-03-15 Hitachi, Ltd. Method of joining members of metal by forced insertion
US20040034981A1 (en) * 2000-05-05 2004-02-26 Torsten Harms Method for the production of a shaft-hub connection
WO2014174072A1 (fr) 2013-04-26 2014-10-30 Continental Teves Ag & Co. Ohg Ensemble pompe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3256967A (en) * 1963-04-04 1966-06-21 Fichtel & Sachs Ag Sheet metal clutch disc and hub
US4376333A (en) * 1978-06-21 1983-03-15 Hitachi, Ltd. Method of joining members of metal by forced insertion
US20040034981A1 (en) * 2000-05-05 2004-02-26 Torsten Harms Method for the production of a shaft-hub connection
WO2014174072A1 (fr) 2013-04-26 2014-10-30 Continental Teves Ag & Co. Ohg Ensemble pompe

Also Published As

Publication number Publication date
DE102019218196A1 (de) 2021-05-27

Similar Documents

Publication Publication Date Title
EP3649724B1 (fr) Procédé de réalisation d'un rotor destiné à un moteur électrique et rotor produit grâce à ce procédé
DE102004030830B4 (de) Bremsenaufbau für eine Traktionsmaschine
EP0316832A1 (fr) Elément de transmission pour installation d'essuyage de véhicules automobiles et son procédé de fabrication
DE112005002498T5 (de) Radlager-Stützanordnung
EP0627568A1 (fr) Elément de connection et de centrage par insertion à force, en particulier boulon de roue
DE102020203483A1 (de) Rotor eines Elektromotors
EP3509872A1 (fr) Roue ferroviaire élastique en plusieurs parties
EP2066871B1 (fr) Dispositif de fixation d'une aube de turbine
EP0620298B1 (fr) Rotor de filage à bout libre
EP3385558A1 (fr) Embrayage à disque
DE102013211476A1 (de) Loslagersystem für eine elektrische Maschine
EP1749929B1 (fr) Dispositif pour la fabrication ou le traitement d'une bande de matériau, en particulier une bande de papier ou de carton
EP2999094A1 (fr) Arbre en saillie pour un moteur électrique, moteur électrique doté d'un arbre en saillie, utilisation d'un arbre en saillie en tant qu'arbre de commande d'un encodeur et procédé de liaison d'un arbre en saillie à un arbre de commande d'un moteur électrique
WO2021104707A1 (fr) Ensemble entraîné par moteur électrique pour un véhicule
WO2009086917A1 (fr) Ensemble palier
DE102019127584A1 (de) Elektrische Maschine, Verfahren zur Herstellung einer elektrischen Maschine, Kraftfahrzeug
EP3646439A1 (fr) Rotor pour une machine électrique
DE202004003695U1 (de) Hydrodynamisches Lagersystem zur Drehlagerung eines Spindelmotors
DE102015225582A1 (de) Rotorlamellenpaket und Rotor für ein elektrisches Aggregat, insbesondere für einen Elektromotor, und Verfahren zur Herstellung eines solchen Rotors
WO2009077224A1 (fr) Induit pour une machine électrique, procédé de fabrication d'un induit, et poinçon pour mater un élément de moyeu sur un arbre
AT525718B1 (de) Rotor
EP3763944B1 (fr) Rail de fixation pourvu de dispositif excentrique
EP3056753A2 (fr) Positionnement de segments de manchon
CH615735A5 (en) Arrangement for preloading the rolling bearings of a radial rolling-bearing unit
DE69002240T2 (de) Gewindebuchseneinheit fuer monatge auf einer welle.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20776118

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20776118

Country of ref document: EP

Kind code of ref document: A1