EP3465882A1 - Flasque pour moteur électrique sans balais - Google Patents

Flasque pour moteur électrique sans balais

Info

Publication number
EP3465882A1
EP3465882A1 EP17719589.8A EP17719589A EP3465882A1 EP 3465882 A1 EP3465882 A1 EP 3465882A1 EP 17719589 A EP17719589 A EP 17719589A EP 3465882 A1 EP3465882 A1 EP 3465882A1
Authority
EP
European Patent Office
Prior art keywords
end shield
output
electric motor
bearing plate
brushless electric
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Withdrawn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
EP17719589.8A
Other languages
German (de)
English (en)
Inventor
Thomas Mahler
Manfred Jakob
Torsten Tussing
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP3465882A1 publication Critical patent/EP3465882A1/fr
Withdrawn legal-status Critical Current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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations

Definitions

  • the present invention relates to a non-output bearing plate for a brushless electric motor, with a centrally disposed bearing seat for receiving a non-output rotor bearing for a rotor shaft of the brushless electric motor.
  • the invention also relates to a brushless electric motor with a non-driven end shield.
  • Non-output end shields and brushless electric motors with non-output end shields are basically known from the prior art.
  • Non-output end shields are used in particular for receiving and supporting a rotor shaft of the brushless electric motor. This must be sufficiently accurately positioned and aligned relative to a stator lamination of the brushless electric motor.
  • a sensor board for rotational position detection of the rotor shaft is in turn positioned and aligned sufficiently accurate to allow the most accurate commutation of the brushless electric motor. It is an object of the present invention to provide a non-output end shield that favors accurate positioning and alignment of a rotor shaft or a sensor board.
  • the non-output bearing plate has a sensor receptacle, which serves as a carrier for a sensor board for rotational position detection of the rotor shaft, wherein the non-output side bearing plate and the sensor receptacle are formed together as a one-piece component.
  • the non-output side bearing plate has three equally spaced insertion elements, which are at least partially receiving in a corresponding insertion element corresponding insertion opening, which is a stator laminated core of the electric motor associated formed.
  • the non-output side bearing plate has exactly three equally spaced insertion elements, which are formed as a one-piece component with the non-output side bearing plate.
  • the non-output side bearing plate can be made of plastic, for example by injection molding.
  • the non-output bearing plate can be made of metal, for example aluminum, preferably by milling.
  • each of the insertion elements has a radially oriented and preferably plane centering surface which is provided for concentric centering of the insertion element with respect to the stator lamination stack.
  • the centering surface preferably bears against a radial support surface of the stator lamination stack.
  • each of the insertion elements has two tangentially oriented and preferably plane centering surfaces, which are provided for the angular orientation of the insertion element with respect to the stator lamination stack.
  • the lie plan centering surfaces in the installed state on a respective tangential support surface of the laminated stator core.
  • an angular orientation is to be understood as meaning an orientation of the non-output-side end plate with respect to the stator lamination stack, the angle being related to a direction of rotation of the rotor shaft.
  • each of the insertion elements on an axially oriented and preferably planar support surface which is provided for maintaining a defined axial position between the non-output side bearing plate with respect to the stator lamination.
  • the planar support surface in the installed state bears against a preferably flat axial support surface of the stator lamination stack.
  • the non-output side bearing plate has three equally spaced support members.
  • the holding elements preferably each form a riot for a clamping screw, which is provided for connecting the non-output side bearing plate with a Abtnebs districten bearing plate.
  • the non-driven rotor bearing is designed as a roller bearing.
  • the invention is also achieved by a brushless electric motor with a laminated stator core, a Abtnebs widelyen end shield, a prescribed not abtnebs districten end shield and a rotor shaft which is mounted in a Abtnebs districten rotor bearing Abtnebs districten bearing plate.
  • the output-side rotor bearing is designed as a roller-floating bearing.
  • the brushless electric motor has a sensor board accommodated in the sensor receptacle for detecting the rotary position of the rotor shaft.
  • the sensor board between the non-driven end shield and the abtnebs districten bearing plate is arranged.
  • the sensor board is arranged between an underside of the bearing plate and the stator lamination stack.
  • Under a bottom of the bearing plate should be understood to be the side of the bearing plate, which faces the output side bearing plate in normal operation.
  • An arrangement of the sensor board between the non-output end shield and the output-side end shield has the advantage that a shorter overall length of the brushless electric motor can be achieved.
  • a recess is provided on the non-output side end shield for this purpose in which the sensor board and / or the sensor ring magnet is received or can be added.
  • the sensor board may be arranged on a side facing away from the output side end shield of the non-output side end shield.
  • the sensor ring may be arranged on the side facing away from the output side end shield of the non-output side bearing plate.
  • the sensor board or the sensor ring is shielded by an unwanted interference magnetic field of a coil winding of the stator. This leads to an improved measured value of preferably provided Hall sensors on the sensor board, which ultimately further improves the commutation of the brushless electric motor.
  • the brushless electric motor has a fan arranged on the output side.
  • Figure 1 shows a preferred embodiment of a brushless electric motor in perspective view
  • Figure 2 shows a preferred embodiment of a non-output side bearing plate according to the invention in perspective view
  • Figure 3 shows the brushless electric motor of Figure 1 in a sectional view
  • FIG. 4 shows the non-output-side bearing plate of FIG. 2 arranged on a laminated stator core of a brushless electric motor (cf. FIG. 1);
  • Figure 5 is a further sectional view through the brushless electric motor of Figure 1;
  • FIG. 6 a stator laminated core of the brushless electric motor of FIG. 1 in perspective view.
  • FIG. 1 shows a preferred exemplary embodiment of a brushless electric motor 500 according to the invention.
  • the brushless electric motor 500 has a laminated stator core 530, an output-side end shield 200 and a centrally arranged rotor shaft 560. Also provided on the brushless electric motor 500 of FIG. 1 is a fan 570 arranged on the output side.
  • FIG. 1 shows an operationally mounted brushless electric motor 500
  • the non-output side end shield 100 is not shown in its entirety.
  • a more detailed explanation of the non-output bearing plate 100 follows with reference to Figure 2. From Figure 1, in turn, it is apparent that a sensor board 550 is on the output side bearing plate 200 facing away from the non-output side bearing plate 100 is added. The sensor board 550 serves for the rotational position detection of the rotor shaft 560.
  • the non-output side bearing plate 100 has three equally spaced retaining elements 127, each forming a riot for a clamping screw 527. By means of the clamping screws 527, the non-output side bearing plate 100 and the output-side end plate 200 are interconnected.
  • FIG. 2 shows a preferred exemplary embodiment of a non-output-side bearing plate 100 according to the invention.
  • the non-output-side bearing plate 100 has a sensor receptacle 150, which serves as a carrier for a sensor board 550 (see FIG. 1).
  • the non-output side end shield 100 and the sensor receptacle 150 are formed together as a one-piece component.
  • the non-output side bearing plate 100 is milled from a metal block.
  • the non-driven bearing plate 100 has exactly three plug-in elements 120 spaced apart from one another.
  • the three equally spaced insertion elements 120 are for at least partially recording in each insertion member 120 corresponding insertion openings 530 (see Figure 6), which are formed in a laminated stator core 530 formed.
  • the non-output side bearing plate 100 of Figure 2 has a variety of constructive surfaces with the exact positioning and alignment is facilitated. These areas will be described in more detail below.
  • each of the insertion elements 120 has a series of radially oriented and in the present plane centering surface 121, which is provided for concentric centering of the insertion element 120 with respect to the laminated stator core 530 (see FIG. 6).
  • each of the planar centering surfaces 121 bears against a corresponding radial support surface 521 of the stator lamination stack 530 (see FIG. 6).
  • each of the insertion elements 120 has two tangentially oriented and in the present plan plan centering surfaces 123.
  • the plane centering surfaces 123 serve for the angular orientation of the insertion element 120 with respect to the stator lamination stack 530.
  • the planar centering surfaces 123 abut against a respective tangential support surface 523 of the stator lamination stack 530.
  • each of the push-in elements 120 has an axially oriented and in the present plane-shaped bearing surface 125, which is provided for maintaining a defined axial position between the non-driven end shield 100 with respect to the stator lamination 530.
  • the plane bearing surface 125 bears against a planar axial support surface 525 of the stator lamination stack 530.
  • FIG. 3 shows a longitudinal section through the brushless electric motor 500 of FIG. 1.
  • the non-driven end shield 100 has a sensor receptacle 150 which serves as a support for the sensor board 550 for detecting the rotation of the rotor shaft 560.
  • the non-output-side bearing plate 100 and the sensor receptacle 150 are formed together as a one-piece component, which is presently recognizable by the hatching.
  • Particularly clearly visible in FIG. 3 is a plane-shaped and radially oriented centering surface 121 of the insertion element 120, which is provided for the concentric centering of the insertion element 120 with respect to the stator lamination stack 530.
  • the planar and radially oriented centering surface 121 is supported on a radial support surface 521 of the stator lamination stack 530.
  • the sensor board 550 is a carrier Hall sensor 555, which cooperates with a sensor ring 557 for the purpose of rotational position detection of the rotor shaft 560.
  • the sensor circuit board 550 can be arranged on a side of the non-output side end shield 100 facing away from the output-side end shield 200. This allows some shielding of the Hall sensor 555 from a magnetic field effect of the stator coil windings 590.
  • the rotor shaft 560 of the brushless electric motor 500 of FIG. 3 is mounted within the non-driven side bearing plate 100 in a non-driven side roller bearing 510 designed as a roller fixed bearing.
  • the rotor shaft 560 is mounted in a driven-side rotor bearing 580, wherein the output-side rotor bearing 580 is designed as a roller-floating bearing.
  • Figure 4 shows the release side bearing plate 100 in the installed state, that is arranged on a laminated stator core 530.
  • Good to see here is the one-piece design of the non-output bearing plate 100 with the sensor receptacle 150 and the exactly three equally spaced insertion elements 120. Also clearly visible in that, in the installed state, the insertion elements 120 are accommodated at least in sections in a corresponding insertion opening 520 which is formed in the stator lamination stack 530.
  • Figure 5 shows a section across the electric motor 500 to illustrate the centering of the non-output side bearing plate 100 in the stator lamination 530.
  • the radially oriented centering surfaces 121 are supported on a respective radial support surface 521 of the stator lamination stack 530.
  • the tangentially oriented planar centering surfaces 123 which are provided on both sides of the insertion element 120 and serve for angular alignment abut against respective tangential support surfaces 523 of the stator lamination stack.
  • FIG. 6 shows the stator lamination stack 530 in a perspective view. Good to are the exactly three equally spaced apart corresponding insertion openings into which the insertion elements 120 (see Figure 2) are to be introduced.
  • the laminated stator core has exactly six stator coil windings 590 which are equally spaced from each other along an inner circumference of the laminated stator core 530. Between two adjacent stator coil windings 590, three uniformly spaced radial support surfaces 521 are formed in the laminated stator core 530.
  • these are formed as radial depressions within the stator lamination stack 530.
  • tangential support surfaces 523 are also formed. These are disposed on a respective portion of the laminated stator core 530 which confines the stator coil winding 590 inwardly. Two adjacent tangential support surfaces 523 are each assigned to one of the insertion elements 120 (cf. FIG. 2). Finally, the planar axial support surface 525 can be seen on the outer circumference of the stator lamination stack 530, which acts as an uprising for the planar support surface 125 of the insertion elements 120 (see FIG. 2). The axial support surface 525 is formed by a planar end of the stator lamination 530.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Brushless Motors (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Flasque non côté sortie (100) destiné à un moteur électrique sans balais (500), comprenant une chaise de palier (110) agencée centralement pour recevoir un palier de rotor non côté sortie (510) destiné à un arbre de rotor (560) du moteur électrique sans balais (500), caractérisé en ce que ce flasque non côté sortie (100) présente un logement de capteur (150) servant de support à une plaque de capteur (550) destinée à déterminer la position de rotation de l'arbre de rotor (560), le flasque non côté sortie (100) et le logement de capteur (150) étant conçus sous la forme d'un composant d'un seul tenant.
EP17719589.8A 2016-05-30 2017-04-26 Flasque pour moteur électrique sans balais Withdrawn EP3465882A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16171876.2A EP3252931A1 (fr) 2016-05-30 2016-05-30 Flasque pour moteur électrique sans balais
PCT/EP2017/059877 WO2017207173A1 (fr) 2016-05-30 2017-04-26 Flasque pour moteur électrique sans balais

Publications (1)

Publication Number Publication Date
EP3465882A1 true EP3465882A1 (fr) 2019-04-10

Family

ID=56087185

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16171876.2A Withdrawn EP3252931A1 (fr) 2016-05-30 2016-05-30 Flasque pour moteur électrique sans balais
EP17719589.8A Withdrawn EP3465882A1 (fr) 2016-05-30 2017-04-26 Flasque pour moteur électrique sans balais

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16171876.2A Withdrawn EP3252931A1 (fr) 2016-05-30 2016-05-30 Flasque pour moteur électrique sans balais

Country Status (4)

Country Link
US (1) US11699934B2 (fr)
EP (2) EP3252931A1 (fr)
CN (1) CN109314429B (fr)
WO (1) WO2017207173A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN109070328B (zh) 2016-03-30 2019-12-03 米沃奇电动工具公司 用于电动工具的无刷马达
CN108092451A (zh) * 2018-01-10 2018-05-29 上海硅泰电子有限公司 盘式电机的散热结构
CN111245163A (zh) * 2018-11-28 2020-06-05 华擎机械工业股份有限公司 解角器固定机构及其马达
DE102019200616A1 (de) * 2019-01-18 2020-07-23 Robert Bosch Gmbh Stator für eine elektrische Maschine, eine elektrische Maschine und Verfahren zum Herstellen einer solchen elektrischen Maschine
US20220247270A1 (en) * 2021-02-02 2022-08-04 Black & Decker Inc. High-power motor for a body-grip power tool

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Publication number Priority date Publication date Assignee Title
CN101189781B (zh) 2005-05-18 2011-10-12 阿塞里克股份有限公司 发动机
FR2898739B1 (fr) * 2006-03-15 2008-06-13 Skf Ab Systeme de support d'arbre pour moteur electrique, moteur electrique et procede de fabrication.
WO2010116205A1 (fr) * 2009-04-07 2010-10-14 Aktiebolaget Skf Ensemble bride
KR101082694B1 (ko) * 2009-12-31 2011-11-15 엘지이노텍 주식회사 스핀들 모터 및 이의 제조 방법
JP5951182B2 (ja) 2011-02-18 2016-07-13 株式会社東芝 電動機
ITBO20120682A1 (it) * 2012-12-18 2014-06-19 Spal Automotive Srl Macchina elettrica
DE102013220495A1 (de) * 2013-10-10 2015-04-16 Continental Teves Ag & Co. Ohg Elektrische Maschine
EP2961038B1 (fr) * 2014-06-05 2019-12-11 Samsung Electronics Co., Ltd. Aspirateur avec ensemble de moteur
US9698647B2 (en) * 2014-09-25 2017-07-04 Regal Beloit America, Inc. Electric machine with magnetic sensor
US20160149467A1 (en) * 2014-11-25 2016-05-26 Black & Decker Inc. Brushless Motor for a Power Tool
CN104795958B (zh) * 2014-12-18 2018-12-21 遨博（北京）智能科技有限公司 一种应用机械臂的具有空心轴电机的无刷直流伺服系统
CH710732A1 (de) * 2015-02-03 2016-08-15 Reishauer Ag Elektrische Maschine.
JPWO2016189763A1 (ja) * 2015-05-25 2018-03-08 日本電産株式会社 送風装置および掃除機
DE102015213020A1 (de) * 2015-07-13 2017-01-19 Bühler Motor GmbH Elektromotor

Also Published As

Publication number Publication date
US20190296603A1 (en) 2019-09-26
US11699934B2 (en) 2023-07-11
CN109314429A (zh) 2019-02-05
EP3252931A1 (fr) 2017-12-06
WO2017207173A1 (fr) 2017-12-07
CN109314429B (zh) 2020-07-03

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