EP4331089A1 - Moteur électrique comprenant un carter de stator - Google Patents

Moteur électrique comprenant un carter de stator

Info

Publication number
EP4331089A1
EP4331089A1 EP22720297.5A EP22720297A EP4331089A1 EP 4331089 A1 EP4331089 A1 EP 4331089A1 EP 22720297 A EP22720297 A EP 22720297A EP 4331089 A1 EP4331089 A1 EP 4331089A1
Authority
EP
European Patent Office
Prior art keywords
area
fan
electric motor
brake
motor according
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.)
Pending
Application number
EP22720297.5A
Other languages
German (de)
English (en)
Inventor
Li Jinchang
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.)
SEW Eurodrive GmbH and Co KG
Original Assignee
SEW Eurodrive GmbH and Co 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 CN202110468197.1A external-priority patent/CN115250025A/zh
Application filed by SEW Eurodrive GmbH and Co KG filed Critical SEW Eurodrive GmbH and Co KG
Publication of EP4331089A1 publication Critical patent/EP4331089A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021—Magnetically influenced friction brakes
    • H02K7/1023—Magnetically influenced friction brakes using electromagnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means

Definitions

  • the invention relates to an electric motor with a stator housing.
  • an electric motor has a stator and a rotor which is mounted such that it can rotate.
  • DE 102018 009 633 A1 discloses an electric motor with a brake and fan hood.
  • An electric motor with a housing part is known from DE 102019 007 375 A1.
  • the invention is therefore based on the object of further developing the cooling of an electric motor.
  • the object is achieved with the electric motor according to the features specified in claim 1.
  • the electric motor with a stator housing which is arranged between a first bearing flange and a second bearing flange, the electric motor having a fan cowl, a collar area projecting radially from the fan cowl being formed on the fan cowl, the collar area of the fan shroud being connected to the first bearing flange by means of screws, the fan shroud having a recess and being otherwise liquid-tight, in particular watertight.
  • the advantage here is that the fan cover protects the fan from the ingress of water and the electric motor can therefore also be arranged outdoors with the fan cover.
  • the radially protruding collar area can also provide rain protection for the rest of the motor. This is because the radially protruding collar area protects the parts with a smaller diameter from water droplets coming from the surroundings in the axial direction.
  • the fan shroud is designed in one piece, in particular in one piece, and has no leaks, with the exception of the recess in the ventilator shroud that is covered by the closure part. If the fan cover is made from sheet metal, the collar area can be formed by forming. In addition, ribs produced by shaping can also be provided, which rigidly connect the collar area to the rest of the fan cowl.
  • the collar region in particular projecting radially, runs all the way around in the circumferential direction, in particular runs all the way around in the circumferential direction without interruption.
  • the fan cowl is designed in one piece with the collar area, in particular in one piece, in particular as a plastic injection-molded part.
  • a fan wheel having fan blades can be connected in a rotationally fixed manner to the axial end region of the rotor shaft, in particular it is connected, with the fan hood surrounding the fan wheel, in particular radially and axially, in particular forming a housing.
  • the advantage here is that the fan is protected from water ingress is protected and the fan can drive an air flow within the fan shroud, so that the heat from heat sources can be distributed and thus the heat can be spread indoors.
  • the fan cover surrounds a brake, in particular radially and axially, in particular forming a housing.
  • a brake in particular radially and axially, in particular forming a housing.
  • a driver having external teeth is connected to the rotor shaft in a rotationally fixed manner, with a brake pad carrier having internal teeth being pushed onto the driver in such a way that the internal teeth mesh with the external teeth and the brake pad carrier is connected to the driver in a rotationally fixed manner but axially to the Driver is slidably arranged, with a magnetic body of the brake being connected to the first bearing flange, in particular non-rotatably connected, with the brake pad carrier being arranged axially between the magnetic body and the first bearing flange, with a coil that can be energized being accommodated in the magnetic body, with a coil connected to the magnetic body non-rotatably connected armature disk is arranged to be axially displaceable with respect to the magnetic body, spring elements supported on the magnetic body pressing on the armature disk, so that when the coil is not energized, the armature disk presses the brake pad carrier onto a bearing flange exc The brake surface formed is pressed and when the coil is energized, the
  • a delimiting element in particular a bolt, which delimits the armature disk axially can be displaced axially by a rotatably mounted receiving part into which a lever can be inserted and/or received.
  • the advantage here is that the brake can also be released manually by turning the lever and the limiting element is thereby displaced in the axial direction by the receiving part rotating with the lever, so that the axial boundary of the armature disk is displaced and the brake is thereby released.
  • the recess is covered by a closure part and, with the closure part removed, the lever can be inserted through the recess into the receiving part, in particular for connecting the lever to the receiving part.
  • the advantage here is that the recess can be covered by the closure part and the closure part can be quickly and easily clipped into the fan cowl to close the recess.
  • the closure part is preferably made of rubber, so that after clipping in, the covering area is in close contact with the fan hood.
  • the closure part can be clip-connected to the fan shroud, the closure part having a cover area and a clip-in area, the clip-in area having an insertion bevel and the edge of the fan shroud bordering the recess snapping into a narrowing of the closure part arranged between the clip-in area and the cover area.
  • the advantage here is that the closure part can be connected to the fan shroud easily and quickly, with the covering area lying against the outside of the ventilator shroud and thus sealing it off.
  • the snap-in area is on the inside of the fan cover and thus also contributes to the sealing function of the closure part.
  • the cover area protrudes axially beyond the snap-in area on both sides, with the particularly semicircular sub-area of the cover area, which protrudes beyond the clip-in area in the axial direction, being supported on the fan cover in an elastically prestressed manner, in particular to suppress play in the clip connection.
  • the advantage here is that the partial area of the covering area that protrudes axially in each case is elastic is biased, so is deflected elastically, and is supported on the fan cover. In this way, the closure part is pressed radially away from the fan shroud, so that the positive clip connection of the closure part is free of play by means of its clipping area.
  • the area covered by the recess in the axial direction includes the area covered by the receiving part in the axial direction and the area covered by the recess in the circumferential direction includes the area covered by the receiving part in the circumferential direction, in particular in such a way that the lever can be Recess can be inserted into the receiving part.
  • the advantage here is that the insertion of the lever through the recess to the receiving part is made possible. The receiving part is thus accessible for connection to the lever.
  • the air flow conveyed by the fan wheel flows through axially continuous recesses in the magnet body and through a free space, in particular through an annular space area, between the magnet body and the fan cover to spread the frictional heat of the brake.
  • the brake has a flow of cooling air flowing through it.
  • the magnetic body is flown through and thus cooled.
  • other heat sources such as the armature disk or the like, are also cooled. The heat is distributed by the cooling air flow within the fan cowl and is thus spread out.
  • FIG. 1 shows an oblique view of an electric motor according to the invention, which has a fan hood 3 .
  • the fan hood 3 is shown in section.
  • FIG. 3 shows an exploded view of the area of the electric motor that encompasses the fan hood 3 .
  • the fan hood 3 is shown in an oblique view.
  • closure part 4 is shown in an oblique view.
  • closure part 4 is shown in a sectional view.
  • the electric motor has a housing part 1 which is connected axially on both sides to bearing flanges which each accommodate a bearing of a rotor shaft of the electric motor.
  • a first bearing flange 2 of the two bearing flanges accommodates a first bearing and is connected to the fan cover 3 .
  • the fan shroud 3 has a collar area 6 formed in particular from sheet metal, which rests against an axial end face of the first bearing flange 2 . Screws protrude through holes that pass axially through the collar area 6 and are screwed into threaded holes in the first bearing flange 2 . The screw heads of the screws thus press the collar area 6 against the first bearing flange 2.
  • the axial direction is aligned parallel to the direction of the axis of rotation of the rotor shaft of the electric motor.
  • the radial direction and the circumferential direction are also related to the axis of rotation of the rotor shaft of the electric motor.
  • the fan cover 3 covers the interior from watertight. This is because the fan hood 3 is closed and has only one recess that can be closed with a closure part 4 .
  • the closure part 4 is made of an elastic material, in particular rubber, and is clipped into the recess of the fan cowl 3, so that a covering area 50 covers the recess, ie in particular covers the environment.
  • the covering area 50 is in contact with the fan shroud 3 and also seals the interior of the fan shroud 3 from the environment.
  • the closure part 4 has a snap-in area 51 which is arranged radially inside the cover area 50 and has an insertion chamfer.
  • a constriction is formed between the cover area 50 and the clip-in area 51, so that the edge area formed by the fan shroud 3, which borders the recess, snaps into the constriction after the radial insertion of the clip-in area 51 into the recess.
  • the constriction is formed as an undercut on the closure part 4 .
  • the fan hood 3 covers an electromagnetically actuable brake, which is arranged on the non-drive end of the electric motor.
  • the area covered by the fan cover 3 in the axial direction includes the axial area covered by the brake in the axial direction.
  • the rotor shaft has a mechanical interface at its axial end area for connecting a fan wheel that has fan blades.
  • the fan wheel is connected to the rotor shaft in a rotationally fixed manner, in particular in a positive and/or non-positive manner.
  • the fan cover 3 does not let any air through when the closure part 4 closes the recess.
  • the fan cowl 3 thus covers the axial end area of the electric motor.
  • the fan hood 3 has ribs 5 which connect the collar area 6 to the rest of the fan hood 3 .
  • the collar area 6 is thus rigidly connected to the remaining area of the fan shroud 3.
  • the electromagnetically actuable brake has a sleeve-like driver which has external teeth and which is slipped onto the rotor shaft and connected to it in a rotationally fixed manner.
  • a brake pad carrier of the brake has internal teeth, with which the brake pad carrier is pushed onto the driver, the internal teeth meshing with the external teeth in such a way that the brake pad carrier is arranged in a rotationally fixed manner with the driver, but is arranged so that it can be displaced axially.
  • a magnetic body of the brake which is also surrounded by the fan cover 3, is connected to the bearing flange 2, in particular in a rotationally fixed manner.
  • An energizable coil is accommodated in the magnet body.
  • a ferromagnetic armature disk of the brake is non-rotatably but axially displaceably connected to the magnet body, in particular by bolts protruding through recesses in the armature disk, which are inserted into the magnet body and connected to it.
  • the armature disk When the coil is not energized, the armature disk is pressed by the spring elements onto the brake pad carrier, which is thus pressed onto a brake surface formed on the bearing flange 2 and, in particular, finely machined.
  • the armature disk is arranged axially between the brake lining carrier and the magnet body.
  • the brake lining carrier is arranged axially between the anchor disk and the braking surface.
  • the brake is arranged on the side of the bearing flange 3 facing away from the stator housing 1 .
  • the brake also has a receiving part 20 in which a lever can be received, which enables manual release of the brake.
  • a lever After receiving the lever, it is rotatably mounted in the receiving part and thus when the lever is rotated by an angular amount, a bolt can be linearly displaced, which protrudes through the armature disk and has a widening on the side of the armature disk facing away from receiving part 20, which Armature disk limited axially.
  • the armature disk is moved towards the magnet body, in particular against the spring force generated by the spring elements, by inserting the lever into the receiving part 20 and then rotating the lever by an angular amount. This enables manual release.
  • the lever can be inserted through the recess in the fan cover 3 to the receiving part 20 surrounded by the fan cover 3 when the closure part 4 is removed. In normal operation, the lever is removed and the closure part 4 is clipped into the fan shroud 3 , in particular clipped into the recess in the fan shroud 3 .
  • the rotor shaft preferably protrudes through the magnet body, so that a fan wheel can be connected to the rotor shaft in a rotationally fixed manner.
  • the rotor shaft On the side of the electric motor facing away from the brake, the rotor shaft also protrudes axially, so that the rotatably mounted shaft of a device to be driven by the electric motor can be connected to the rotor shaft in a rotationally fixed manner.
  • the fan cover 3 acts as a rain guard for the electric motor.
  • the collar area has a larger maximum outside diameter than the stator housing of the electric motor.
  • the fan cowl 3 thus protrudes beyond the stator and can act as rain protection, at least in the installation direction mentioned.
  • the fan shroud 3 is preferably designed to be watertight and has two axial through-holes in its collar area 6, which are aligned with two corresponding axial through-holes, so that water, in particular quantities of liquid present in the collar area of the fan shroud 3, can flow through the holes in the fan shroud 3 and Holes in the first bearing flange 2 can be guided away from the fan shroud 3 .
  • Cover area 50 protrudes axially beyond clip-in area 51 on both sides by means of semicircular sub-areas of cover area 50. These sub-areas are elastically supported on fan shroud 3 and thus press closure part 4 away from fan shroud 3, which suppresses the play of the positive clip connection and thereby improves the tightness becomes.
  • the fan cover is designed as a plastic injection molded part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Un moteur électrique est divulgué qui comprend un boîtier de stator entre une première bride de palier et une seconde bride de palier ; le moteur électrique comprend un capot de ventilateur sur lequel est formée une région de collier qui fait saillie radialement à partir du capot de ventilateur, ladite région de collier de capot de ventilateur étant reliée à la première bride de palier par des boulons ; le capot de ventilateur présente un trou et est, par ailleurs, étanche aux liquides, en particulier étanche à l'eau.
EP22720297.5A 2021-04-28 2022-04-12 Moteur électrique comprenant un carter de stator Pending EP4331089A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN202110468197.1A CN115250025A (zh) 2021-04-28 2021-04-28 具有定子壳体的电机
DE102021003033 2021-06-15
PCT/EP2022/025142 WO2022228714A1 (fr) 2021-04-28 2022-04-12 Moteur électrique comprenant un carter de stator

Publications (1)

Publication Number Publication Date
EP4331089A1 true EP4331089A1 (fr) 2024-03-06

Family

ID=81454659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22720297.5A Pending EP4331089A1 (fr) 2021-04-28 2022-04-12 Moteur électrique comprenant un carter de stator

Country Status (3)

Country Link
EP (1) EP4331089A1 (fr)
DE (1) DE102022001255A1 (fr)
WO (1) WO2022228714A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023004596A1 (de) 2022-12-29 2024-07-04 Sew-Eurodrive Gmbh & Co Kg Elektromotor mit Lüfter und Lüfterhaube

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008028605A1 (de) 2008-06-18 2009-12-24 Sew-Eurodrive Gmbh & Co. Kg Elektromotor mit Bremse, Bremse und Verfahren
DE102009012324A1 (de) 2009-03-09 2010-09-16 Siemens Aktiengesellschaft Elektrische Maschine mit Wärmeumlaufkühlung
CN204168039U (zh) * 2014-09-05 2015-02-18 德大机械（昆山）有限公司 一种防水马达
JP2018057080A (ja) * 2016-09-26 2018-04-05 日本電産サンキョー株式会社 ブレーキ付きモータ
EP3738197A1 (fr) 2018-01-12 2020-11-18 Sew-Eurodrive GmbH & Co. KG Mécanisme d'entraînement présentant un moteur électrique doté d'un frein, capot de ventilateur et tringle pour actionner manuellement le frein et procédé de fabrication d'un mécanisme d'entraînement
JP7167609B2 (ja) * 2018-09-28 2022-11-09 日本電産トーソク株式会社 電動ポンプ装置
DE102019007375A1 (de) 2018-11-29 2020-06-04 Sew-Eurodrive Gmbh & Co Kg Elektromotor mit Gehäuseteil, insbesondere eine eine elektromagnetisch betätigbare Bremse und einen Lüfter gehäusebildend umgebende Lüfterhaube, und Verfahren zum Herstellen eines Elektromotors aus einem Rohteil
CN212486260U (zh) * 2020-07-14 2021-02-05 南阳微特防爆电机有限公司 一种变频防爆电磁制动电动机

Also Published As

Publication number Publication date
WO2022228714A1 (fr) 2022-11-03
DE102022001255A1 (de) 2022-11-03

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