WO2017008796A1 - Induit de transmetteur magnétique pour moteur électrique - Google Patents
Induit de transmetteur magnétique pour moteur électrique Download PDFInfo
- Publication number
- WO2017008796A1 WO2017008796A1 PCT/DE2016/200294 DE2016200294W WO2017008796A1 WO 2017008796 A1 WO2017008796 A1 WO 2017008796A1 DE 2016200294 W DE2016200294 W DE 2016200294W WO 2017008796 A1 WO2017008796 A1 WO 2017008796A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electric motor
- rotor
- ring
- axially
- shaft
- Prior art date
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
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
Definitions
- the invention relates to an electric motor (1) with a stator (19) and a rotor (18) which is rotatably mounted in a housing, with a Geberpolrad (2) which is rotatably mounted on the rotor (18).
- the encoder wheel consists of two axial sections, with a first section is freed to the shaft and a second section by means of a ring-like
- Auxiliary body is pressed as a reinforcing element. Because of the two
- the object of the invention is therefore to ensure in an electric motor with Geberpolrad that this is easy to manufacture and assemble, it requires a small axial length and accurate axial assignment and attitude adjustment to a statorfesten sensor is possible.
- the encoder pole wheel (2) consists of a magnetic ring (7), which is designed for the magnetic properties and from a support (3), which may consist of a simple plastic material, to which no particularly high demands on strength and Heat resistance are provided. Since the carrier (3) has fastening means (4) which extend axially extend in recesses (12) of the rotor (18) and engage in this, an excellent positive rotational drive is given.
- the carrier (3) comprises a support or a plurality of supports (6) which are supported on a shaft (25) of the rotor (18). This support prevents the Geberpolrad (2) has a tendency to tilt or tilted mountable.
- the support or the supports (6) has a shape adapted to a cylindrical surface
- Bearing surface / bearing surfaces (34) has / which directly on the shaft (25) abuts / abut. Since the shaft (25) also has a cylindrical surface is given a large area, rich contact surface or contact surfaces (34), which undergo no change in shape even under vibration stress and lose the advantage described.
- three or more supports (6) are provided, to which radially a sleeve (29) adjoins or that in a support (6) this is sleeve-shaped. This results in a precise centering of the encoder pole wheel (2) on the shaft (25).
- Transmitter (2) one or more axial stops (36), the axially projecting from this or projecting.
- the or the axial stop / axial stops (36) closes / close to the support or the supports (6) axially.
- the hub (30) serves to bridge a radial distance between the shaft (25) or the supports (6) and / or the sleeve (29) and the magnetic ring (7), wherein as possible no material accumulations should occur, the Deformations would lead after cooling of the injection molding compound. Therefore, the hub (30) is disc-shaped, so that the entire carrier (3) has approximately the same wall thickness in its different areas.
- a magnetic receiving ring (9) connects radially to the hub (30). It is further provided that the magnet receiving ring (9) at its axial ends in each case by an annular wall (37) is axially expanded, wherein between the magnet receiving ring (9) and the annular walls (37) has a groove (33) is formed. This groove (33) serves as axial securing for the magnetic ring (7). Due to the
- the magnet ring (7) may be received in the groove (33) or the magnet ring (7) may extend radially beyond the groove (33). Furthermore, the magnetic ring (7) can extend axially outside the groove (33) so far that the axial boundary of the ring walls (37) and the magnet ring (7) lie in one plane. This results in a wider magnetic ring (7), which is more likely the encoder rotor (2) directly opposite. To amplify this effect could be the magnetic ring (7), depending on whether this is the
- the fastening means (4) are at least partially axially connected to the hub (30). But you can also at least partially axially to the
- Fastening means (4) and the corresponding recesses (12) of the rotor (18) are dimensioned.
- a frictional connection is the better, the rougher a joining surface.
- the spring (42) consists of the material of the carrier (3) and is integral therewith.
- a second solution of the problem is by a method with the following
- Achieved method steps a) providing a rotor assembly, consisting of a shaft (25), a pressed rotor laminated core (26) with mounted
- Permanent magnets (27); b) pre-assembly of a Geberpolrads (2) in recesses (12) of the rotor core (26); c) pressing a deep groove ball bearing (15) on the shaft (25) and setting a defined distance measure between a
- Encoder pole (2) further into the recesses (12) of the rotor core (26) are pressed.
- manufacturing tolerances of the individual parts of the electric motor (1) which have an influence on the position of a magnetic sensor, can be compensated in an elegant manner.
- the permanent magnets (27) and a magnetic ring (7) of the encoder pole wheel (2) are magnetized simultaneously. As a result, an additional process step is saved.
- stator assembly consisting of a housing pot (10) with a mounted stator (19) and mounted first deep groove ball bearing (8) serving as a fixed bearing is provided and the stator assembly is mounted on the rotor assembly with a sleeve-like tool attached to an inner ring (39 ) of the first deep groove ball bearing (8) brought into abutment and this defined on the shaft (25) is pressed.
- 1 is an end view of a first embodiment of a Geberpolrads
- FIG. 1 is a perspective view of the Geberpolrads shown in FIG. 1,
- FIG. 3 shows a representation according to FIG. 2 from a different perspective
- Fig. 9 shows a variant of the second embodiment of the Geberpolrads.
- FIGS. 1 to 6 show a first one from different perspectives
- Embodiment of a Geberpolrads 2 consisting of a support 3 and a magnetic ring 7.
- the carrier 3 consists of an annular disc-shaped hub 30, to which six fastening means 4, a central sleeve 29 and a
- the magnet receiving ring 9 (see Fig. 2) continues radially through two annular walls 37, which are spaced from each other.
- the magnet receiving ring 9 and the annular walls 37 together form a radially outwardly open groove 33 (see FIG. 2).
- the groove 33 is filled by a magnetic ring 7.
- the magnetic ring 7 continues radially over the annular walls 37 and forms a cylindrical outer contour.
- the axial boundary of the magnet ring 7 and the axial boundary of the annular walls 37 lie in one plane.
- the sleeve 29 projects axially relative to the magnetic ring 7 and the ring walls 37. Close to the sleeve 29 radially inward three by 120 ° angular distance from each other
- Support 6 which serve as a support means. These have radially inner bearing surfaces 34 which are adapted to a cylinder jacket surface. In a mounted
- the supports 6 each have an axial stop 36 (see FIG. 2); these serve to rest on a second deep groove ball bearing 15 (see FIG. 9).
- the axial stops 36 project axially relative to the sleeve 29.
- the fastening means 4 have the form of tapered, slotted sleeves 29, with cavities 31 and one inwardly directed slot 32. The fastening means 4 serve as
- Anti-rotation device for the Geberpolrad 2 A chamfer 35 (see Fig. 3, 4) at the end of the fastening means 4 and also the taper to the introduction into
- Recesses 12 of a rotor core 26 facilitate (see Fig. 9).
- Recesses 12 provide.
- the slots 32 allow a certain Resiliency of the fastening means 4, so that their diameter can be slightly reduced and adapted to the recesses 12 in the laminated core.
- the fastening means 4 extend radially from the sleeve 29 via the hub 30 to the magnet receiving ring 9.
- the carrier 3 is integral with the sleeve 29, the hub 30, the fastening means 4, the supports 6 and the magnet receiving ring 9.
- the magnetic ring 7 consists of a plastic-bonded permanent magnet 27 (see Fig. 1), z. A rare earth magnet such as NdFeB.
- the Geberpolrad 2 is produced by means of a two-component injection molding process, wherein first the carrier 3 is urgeformt of a plastically deformable plastic material in a first cavity and then the magnetic ring 7 from the
- plastic-bonded permanent magnet material is joined in a second cavity with the carrier 3 by prototyping.
- On the material of the carrier 3 no very high demands are made, because due to the positive connection with the rotor core 26 can be dispensed with a press connection with the shaft 25.
- the supports 9 prevent tilting of the Geberpolrads 2 may occur.
- Fig. 1 a cone-like Entformungsschräge 41 is indicated, which facilitates demolding of an injection molding tool.
- the supports 6 have no Entformungsschrägen 41 in order to provide a defined bearing surface.
- Fig. 7. Shows in two by 150 ° to each other inclined cutting planes (see line AA in Fig. 1) the Geberpolrad 2 of the first embodiment mounted on a rotor 18, wherein the integral with the carrier 3 fastening means 4 in axially parallel recesses 12 of a rotor core 26 extend and are held therein non-positively.
- An axial stop 36 lies axially against the inner ring 39 of a
- Recesses 12 is set. Basically, the number of
- Fastener 4 freely selectable, but it is recommended to provide at least two, preferably three or more fasteners 4.
- Fig. 8 shows stylized a second embodiment of a Geberpolrads 2 ', with a carrier 3' and a magnetic ring 7 '.
- the carrier 3 ' here are two Fastener 4 'in one piece, which extend axially parallel to the carrier 3' away.
- the fastening means 4 ' are each provided with four tapered ribs 38, which form a cross-shaped arrangement and are separated from one another by notches 40.
- Bearing 6 are omitted here for the sake of simplicity, but they can be shaped similar to the first embodiment. Instead of discrete supports, an annular support 6 'could also be used.
- Fig. 9 shows a variant of the second embodiment of the encoder rotor 2 ", in which a spring 42 made of plastic with the carrier 3" is in one piece.
- the spring 42 consists of two spaced-apart and interconnected by webs 17 rings 13. Further webs 17 connect the first of the rings 13 with the carrier 3 "The arranged between the rings 13 webs 17 are compared with the between the support 3" and the Sensor 43 (see Fig. 1 0) arranged webs 17 angularly offset by 90 °.
- On the outer ring 13 close axially two projections 23, which are angularly offset by 90 ° relative to the rings 13 connecting webs 17.
- the projections 23 serve as defined contact surfaces for installation on
- Rotor sheet package 26 Due to the angular offset of the webs 17 with each other and the projections 23 with respect to the webs 17 a compliance of the spring 42 is made possible by the areas of the rings 13 between the webs 17 in
- an electric motor 1 which is an electronically commutated DC motor, which comprises a rotor 18 equipped with permanent magnets 27, a stator 19 wound with a winding 24, and a housing.
- the housing consists of a bearing plate 20 and the housing pot 10.
- the rotor 18 consists of a smooth shaft 25, a rotor core 26, the permanent magnet 27 and a
- Geberpolrad 2 which on a support 3 (see Fig. 1 to 6) is held, which is pressed axially via fastening means 4 in recesses 12 of the rotor core 26 lamination.
- a sensor 43 cooperates, which is arranged on a circuit board 21 radially to the Geberpolrad 2; Alternatively, an axial arrangement would be possible.
- the printed circuit board 21 is formed as an overmolded guide plate, which comprises a plug 22.
- a first deep groove ball bearing 8 which is fixed to the spring steel disc 5, a second deep groove ball bearing 15, a cap 1 6, which is fixed in a recess 14, a flanged gear pump 28 and a laminated stator core 1 1 shown.
- the axial position relative to the rotor 18 can be adjusted within certain limits to the respective actual dimensions.
- the axial stops 36 (see FIGS. 1 to 6), which can be supported on the inner ring 39 of the second deep groove ball bearing 15. In this way, a precise position assignment to the sensor 43 can be produced.
- the encoder pole wheel 2 and the rotor 18 each have three north poles and three south poles.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
- Brushless Motors (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680040963.1A CN107836074B (zh) | 2015-07-13 | 2016-06-28 | 用于电动机的磁式的探测器磁轮 |
JP2018501361A JP6981959B2 (ja) | 2015-07-13 | 2016-06-28 | 電気モータのための磁気ホィール |
KR1020187003824A KR102069566B1 (ko) | 2015-07-13 | 2016-06-28 | 자석 펄스휠을 갖는 전기 모터 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015213020.7 | 2015-07-13 | ||
DE102015213020.7A DE102015213020A1 (de) | 2015-07-13 | 2015-07-13 | Elektromotor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017008796A1 true WO2017008796A1 (fr) | 2017-01-19 |
Family
ID=56418339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2016/200294 WO2017008796A1 (fr) | 2015-07-13 | 2016-06-28 | Induit de transmetteur magnétique pour moteur électrique |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP6981959B2 (fr) |
KR (1) | KR102069566B1 (fr) |
CN (1) | CN107836074B (fr) |
DE (1) | DE102015213020A1 (fr) |
WO (1) | WO2017008796A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190296603A1 (en) * | 2016-05-30 | 2019-09-26 | Hilti Aktiengesellschaft | End shield for a brushless electric motor |
US20220166271A1 (en) * | 2020-11-26 | 2022-05-26 | Nidec Motors & Actuators (Germany) Gmbh | Electric motor with injection molded rotor comprising an axial support for a ball bearing |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020216119A1 (de) * | 2020-12-17 | 2022-06-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Montagebaugruppe und Verfahren zur Herstellung einer Montagebaugruppe |
DE102021210898A1 (de) | 2021-09-29 | 2023-03-30 | Zf Friedrichshafen Ag | Anordnung eines Rotors einer elektrischen Maschine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19823640A1 (de) | 1998-05-27 | 1999-12-02 | Bosch Gmbh Robert | Hohler Magnetkörper zum Erfassen einer Drehung einer Welle |
WO2015036015A1 (fr) * | 2013-09-10 | 2015-03-19 | Aktiebolaget Skf | Ensemble palier instrumenté et machine comprenant un tel ensemble |
Family Cites Families (10)
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JP2882037B2 (ja) * | 1990-11-13 | 1999-04-12 | 松下電器産業株式会社 | 速度検出器付き電動機 |
DE9315586U1 (de) * | 1993-07-30 | 1993-12-09 | Siemens Ag | Elektromotorischer Antrieb |
DE19905274A1 (de) * | 1999-02-09 | 2000-08-10 | Bosch Gmbh Robert | Drehungssensor |
JP2000295812A (ja) | 1999-04-02 | 2000-10-20 | Seiko Instruments Inc | モータ、モータの製造方法、及び回転体装置 |
DE19945657C1 (de) * | 1999-09-23 | 2001-03-15 | Siemens Ag | Kommutatormotor mit einer Drehzahl- und/oder Drehrichtungs-Sensorvorrichtung |
JP2005229698A (ja) * | 2004-02-12 | 2005-08-25 | Nippon Densan Corp | ブラシレスモータ |
JP2005269831A (ja) * | 2004-03-19 | 2005-09-29 | Nidec Shibaura Corp | ブラシレスdcモータ |
JP2009050055A (ja) * | 2007-08-16 | 2009-03-05 | Toyota Motor Corp | 回転電機のロータ |
EP2141785B1 (fr) * | 2008-07-04 | 2019-08-28 | Mabuchi Motor Co., Ltd. | Support magnétique de capteur, moteur doté du support incorporé dans celui-ci, et procédé de fabrication du moteur |
EP2549631B1 (fr) * | 2011-07-22 | 2021-07-14 | LG Innotek Co., Ltd. | Dispositif de support pour un aimant de détection pour moteur EPS |
-
2015
- 2015-07-13 DE DE102015213020.7A patent/DE102015213020A1/de active Pending
-
2016
- 2016-06-28 KR KR1020187003824A patent/KR102069566B1/ko active IP Right Grant
- 2016-06-28 JP JP2018501361A patent/JP6981959B2/ja active Active
- 2016-06-28 WO PCT/DE2016/200294 patent/WO2017008796A1/fr active Application Filing
- 2016-06-28 CN CN201680040963.1A patent/CN107836074B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19823640A1 (de) | 1998-05-27 | 1999-12-02 | Bosch Gmbh Robert | Hohler Magnetkörper zum Erfassen einer Drehung einer Welle |
WO2015036015A1 (fr) * | 2013-09-10 | 2015-03-19 | Aktiebolaget Skf | Ensemble palier instrumenté et machine comprenant un tel ensemble |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190296603A1 (en) * | 2016-05-30 | 2019-09-26 | Hilti Aktiengesellschaft | End shield for a brushless electric motor |
US11699934B2 (en) * | 2016-05-30 | 2023-07-11 | Hilti Aktiengesellschaft | End shield for a brushless electric motor |
US20220166271A1 (en) * | 2020-11-26 | 2022-05-26 | Nidec Motors & Actuators (Germany) Gmbh | Electric motor with injection molded rotor comprising an axial support for a ball bearing |
CN114552849A (zh) * | 2020-11-26 | 2022-05-27 | 德国日本电产电机与驱动器有限公司 | 电动马达 |
Also Published As
Publication number | Publication date |
---|---|
KR20180028489A (ko) | 2018-03-16 |
JP6981959B2 (ja) | 2021-12-17 |
JP2018522523A (ja) | 2018-08-09 |
KR102069566B1 (ko) | 2020-01-28 |
CN107836074A (zh) | 2018-03-23 |
DE102015213020A1 (de) | 2017-01-19 |
CN107836074B (zh) | 2020-09-04 |
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