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WO2022242905A1 - Moteur électrique avec capot de ventilateur et capteur - Google Patents

Moteur électrique avec capot de ventilateur et capteur Download PDF

Info

Publication number
WO2022242905A1
WO2022242905A1 PCT/EP2022/025190 EP2022025190W WO2022242905A1 WO 2022242905 A1 WO2022242905 A1 WO 2022242905A1 EP 2022025190 W EP2022025190 W EP 2022025190W WO 2022242905 A1 WO2022242905 A1 WO 2022242905A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
fan
connecting plate
motor according
rotor shaft
Prior art date
Application number
PCT/EP2022/025190
Other languages
German (de)
English (en)
Inventor
Li Jinchang
Original Assignee
Sew-Eurodrive Gmbh & 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 CN202110551415.8A external-priority patent/CN115378179A/zh
Application filed by Sew-Eurodrive Gmbh & Co. Kg filed Critical Sew-Eurodrive Gmbh & Co. Kg
Priority to EP22725365.5A priority Critical patent/EP4342061A1/fr
Publication of WO2022242905A1 publication Critical patent/WO2022242905A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • 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
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • the invention relates to an electric motor with a fan hood and sensor.
  • an electric motor can be designed with a fan cover that surrounds a fan wheel.
  • the invention is therefore based on the object of further developing an electric motor, in which case simple, cost-effective production should be made possible.
  • the object is achieved with the electric motor according to the features specified in claim 1.
  • the electric motor has a rotor shaft that is rotatably mounted relative to a bearing flange of the electric motor, in particular wherein the bearing flange accommodates a bearing with which the rotor shaft is rotatably mounted and with which a stator housing of the electric motor connected, wherein a shaft, which is rotatably mounted relative to a housing of the sensor, is connected in a torque-proof manner to the rotor shaft of the electric motor, the sensor being arranged on the side of the fan cowl facing away from the bearing flange, the fan cowl having a fan grille having grille openings, the housing of the At least one angle plate is attached to the sensor and protrudes towards the fan hood, wherein a connecting plate bears against a region of the angle plate, in particular flat, wherein the connecting plate rests on a holding part which is arranged between the connecting plate and the fan cowl, the holding part having expansion areas protruding into a respective grille
  • the advantage here is that a particularly simple and inexpensive production of the electric motor is made possible. This is because the torque support for the sensor can be implemented using simple, inexpensive sheet metal parts and a holding part and can be fastened to the fan grille of the fan cowl, coming in particular from the non-drive end of the engine.
  • the sensor can be implemented as an angle sensor, ie for detecting the angular position of the rotor shaft.
  • a shaft of the sensor is non-rotatably connected to the rotor shaft and a housing part of the sensor is non-rotatably connected to the stator housing of the electric motor directly or via a bearing flange connected thereto.
  • the lattice openings together with further lattice openings form a flat, in particular two-dimensional, regular lattice.
  • the advantage here is that the respective holding part can be inserted into the fan grille at different positions and can be connected there in a non-positive manner.
  • the connecting plate is designed as a flat piece of sheet metal, with the normal direction of the plane receiving the piece of sheet metal being aligned parallel to the axis of rotation of the rotor shaft.
  • the respective expansion area has two leg sections, which are increasingly widened when the respective screw is screwed in, in particular spread open, and thus to the edge of a respective grille opening are pressed.
  • the advantage here is that the holding part can be produced inexpensively and a sufficiently elastic material can be used so that the expansion areas can be connected with little effort.
  • centering areas are formed on the holding part, which also protrude into grid openings, the holding part together with its centering areas and expanding areas being made in one piece, in particular in one piece.
  • each of the screws protrudes through the connecting plate.
  • the spreading areas and centering areas of a respective holding part are spaced apart from one another in such a way that they protrude into different lattice openings and rest against a respective boundary of the respective lattice opening.
  • the holding part is made as a plastic injection molded part or as a metal part.
  • the advantage here is that a cost-effective production is made possible.
  • a screw protrudes through a radially extending slot in the connecting plate and through a further slot in the angle plate, with the further slot extending perpendicularly to the first slot, in particular either in a tangential direction or in the circumferential direction, in particular in relation to the axis of rotation the rotor shaft circumferential direction.
  • a second angle plate is attached to the housing of the sensor and protrudes towards the fan hood, wherein a second connecting plate bears against a region of the second angle plate, in particular flat, wherein the second connecting plate rests on a second holding part which is arranged between the second connecting plate and the fan shroud, the second holding part protruding into a respective grille opening of the fan grille of the fan shroud has second expansion areas, in each of which a respective second screw is screwed in such a way that the second expansion areas are clamped in second lattice openings.
  • the advantage here is that an improved torque support can be provided by a second holding part being able to be arranged diametrically opposite the first.
  • a fan wheel is connected in a torque-proof manner to the rotor shaft of the electric motor, with the fan wheel being surrounded, in particular radially, by the fan cowl.
  • the second connecting plate is designed as a flat piece of sheet metal, with the normal direction of the plane receiving the piece of sheet metal being aligned parallel to the axis of rotation of the rotor shaft.
  • the respective second expansion area has two leg sections, which are increasingly widened when the respective second screw is screwed in, in particular spread open, and are thus pressed against the edge of a respective grid opening.
  • each of the second screws protrudes through the connecting plate.
  • the advantage here is that twisting of the connecting plate in a plane whose normal direction is aligned parallel to the axial direction can be prevented.
  • a second screw protrudes through a radially extending slot in the second connecting plate and through a further slot in the second angle plate, with the further slot extending perpendicularly to the first slot, in particular either in a tangential direction or in a circumferential direction, in particular in relation to on the axis of rotation of the rotor shaft circumferential direction.
  • the advantage here is that tolerances can be compensated for and only then can the screws be tightened.
  • the holding parts are evenly spaced from one another in the circumferential direction relative to the axis of rotation of the rotor shaft, in particular by the Nth fraction of 360°, N being the number of holding parts.
  • the fan cover is made of sheet metal.
  • FIG. 1 shows an area of an electric motor with a fan cover 1 in an oblique view, with a sensor 2 being connected to a fan cover 1 with its angle plates 4 via connecting plates 5 and a holding part 7 .
  • the connecting plate 5 is shown in an oblique view.
  • the holding part 7 is shown in an oblique view.
  • the electric motor has a fan shroud 1 which is attached to a stator housing part or bearing flange of the electric motor.
  • a fan wheel is non-rotatably connected to the rotor shaft of the electric motor and surrounded radially by the fan cover.
  • the fan cowl 1 On its side facing away from the stator housing part or bearing flange, the fan cowl 1 has a fan grille which has identically shaped grille openings which are arranged as flat, in particular uniform.
  • the air flow sucked in by the fan impeller flows in through the fan grille.
  • the rotor shaft is rotatably mounted via a bearing accommodated in the bearing flange.
  • a shaft 3 of the sensor is non-rotatably connected to the rotor shaft.
  • the shaft 3 is rotatably mounted relative to the housing of the sensor 2 .
  • Two angle plates 4 are attached to the housing of the sensor 2 .
  • Each of the angle plates 4 is connected to a respective connecting plate 5 by the connecting plate 5 is applied parallel to a portion of the angle plate 4 and is connected by means of a continuous screw through both plates, in particular by a nut on the Threaded area of the screw is screwed and presses against the connecting plate 5, while the screw head of the screw presses against the area of the angle plate 4.
  • the screw protrudes through a radially extending slot in the connecting plate 5, so that an adjustment is made possible.
  • the connecting plate has two further recesses which pass through the connecting plate 5 and are designed as round holes. Two screws 6 protrude through these round holes.
  • a holding part 7 has centering legs 40 and in particular two expanding legs 41 .
  • the two expansion legs 41 are each inserted into a respective grid opening and have a threaded area on their side facing away from the fan cowl 1 .
  • the centering legs 40 protrude into further grid openings and improve the alignment of the holding part 7.
  • a second connecting plate is applied parallel to the second angle plate 4 and is connected with a screw which passes through a slot in the connecting plate 5 .
  • the connecting plate 5 also has round holes, through which further screws 6 protrude and into the threaded areas of further expansion legs 41 of the further holding part 7, which is thus also clamped in the fan grille.
  • the two holding parts 7 are 180° apart from one another in the circumferential direction around the axis of rotation of the rotor shaft, ie in particular arranged diametrically opposite one another.
  • a two-part torque support for the sensor 2 on the fan grille of the fan cowl 1 is realized according to the invention, which has a very high rigidity for torsion but a much lower rigidity against axially directed or radially directed vibration modes.
  • the holding part is made of metal.
  • the cross section of the respective expansion area 41 i.e. the sectional structure of the expansion area 41 with a plane whose normal direction is aligned parallel to the axis of rotation of the rotor shaft, has an outer circumference which rests at least four points on the edge of the grid opening through which the expansion area 41 protrudes .
  • the expansion area 41 is preferably designed to be increasingly tapered as the distance from the connecting plate 5 increases, so in particular the area encompassed by the cut structure within the plane becomes smaller and smaller. This allows easy threading.
  • the distance between the two expansion areas 41 preferably equals the lattice spacing of the lattice openings or an integer multiple of this lattice spacing.
  • the holding part 3 is designed as a plastic injection molded part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un moteur électrique avec capot de ventilateur et capteur, ledit moteur électrique comprenant un arbre de rotor monté rotatif par rapport à un flasque de palier du moteur électrique, en particulier le flasque de palier recevant un palier au moyen duquel l'arbre de rotor est monté rotatif et auquel est relié un carter de stator du moteur électrique, un arbre monté rotatif par rapport à un boîtier du capteur étant relié solidaire en rotation à l'arbre de rotor du moteur électrique, le capteur étant disposé sur le côté du capot de ventilateur opposé au flasque de palier, le capot de ventilateur comportant une grille de ventilateur pourvue d'ouvertures de grille. Selon l'invention, au moins une tôle angulaire est fixée sur le boîtier du capteur et fait saillie vers le capot de ventilateur, une tôle de liaison étant en contact, en particulier à plat, avec une zone de la tôle angulaire, la tôle de liaison reposant sur une pièce de retenue qui est disposée entre la tôle de liaison et le capot de ventilateur, la pièce de retenue présentant des zones à expansion qui font saillie dans une ouverture de grille respective et dans lesquelles une vis respective est vissée de telle sorte que les zones à expansion sont serrées dans des ouvertures de grille.
PCT/EP2022/025190 2021-05-20 2022-04-27 Moteur électrique avec capot de ventilateur et capteur WO2022242905A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22725365.5A EP4342061A1 (fr) 2021-05-20 2022-04-27 Moteur électrique avec capot de ventilateur et capteur

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202110551415.8A CN115378179A (zh) 2021-05-20 2021-05-20 具有风机罩和传感器的电机
CN202110551415.8 2021-05-20
DE102021003689 2021-07-15
DE102021003689.1 2021-07-15

Publications (1)

Publication Number Publication Date
WO2022242905A1 true WO2022242905A1 (fr) 2022-11-24

Family

ID=81846332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/025190 WO2022242905A1 (fr) 2021-05-20 2022-04-27 Moteur électrique avec capot de ventilateur et capteur

Country Status (3)

Country Link
EP (1) EP4342061A1 (fr)
DE (1) DE102022001475A1 (fr)
WO (1) WO2022242905A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230041061A1 (en) * 2019-12-04 2023-02-09 Sew-Eurodrive Gmbh & Co. Kg Electric motor having a fan guard and rotor shaft mounted rotatably relative to the fan guard and angle sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0746081A2 (fr) * 1995-06-01 1996-12-04 Siemens Aktiengesellschaft Elément de fixation pour le montage au moins partiellement élastique du stator d'un capteur
DE19956959A1 (de) * 1999-11-16 2001-06-13 Huebner Elmasch Ag Anordnung zur Drehmomentabstützung eines Drehgebers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0746081A2 (fr) * 1995-06-01 1996-12-04 Siemens Aktiengesellschaft Elément de fixation pour le montage au moins partiellement élastique du stator d'un capteur
DE19956959A1 (de) * 1999-11-16 2001-06-13 Huebner Elmasch Ag Anordnung zur Drehmomentabstützung eines Drehgebers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230041061A1 (en) * 2019-12-04 2023-02-09 Sew-Eurodrive Gmbh & Co. Kg Electric motor having a fan guard and rotor shaft mounted rotatably relative to the fan guard and angle sensor

Also Published As

Publication number Publication date
EP4342061A1 (fr) 2024-03-27
DE102022001475A1 (de) 2022-11-24

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