EP2174405A2 - Couvercle de capteur pourvu d'une bague de montage - Google Patents

Couvercle de capteur pourvu d'une bague de montage

Info

Publication number
EP2174405A2
EP2174405A2 EP08786625A EP08786625A EP2174405A2 EP 2174405 A2 EP2174405 A2 EP 2174405A2 EP 08786625 A EP08786625 A EP 08786625A EP 08786625 A EP08786625 A EP 08786625A EP 2174405 A2 EP2174405 A2 EP 2174405A2
Authority
EP
European Patent Office
Prior art keywords
hood
mounting ring
encoder
mounting
flange
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Withdrawn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
EP08786625A
Other languages
German (de)
English (en)
Inventor
Thomas Then
Hubertus BÄHR
Hans-Joachim Müller
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP2174405A2 publication Critical patent/EP2174405A2/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Withdrawn legal-status Critical Current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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn

Definitions

  • the present invention relates to a sensor cover for an electric machine with a cup-shaped hood for mounting to the electric machine and for covering a transmitter. Moreover, the present invention relates to an electric machine with a transmitter, which is attached by means of such a donor cover to the electric machine.
  • Servo motors are equipped with different encoders as standard.
  • the encoders serve as tachometers or as angle encoders for controllers or motor controls.
  • the transmitter may also be a temperature sensor, acceleration sensor or another sensor for detecting a physical quantity.
  • Servo motors and other electrical machines have different shaft heights depending on the application. This means that the diameters of the electrical machines are different. Nevertheless, efforts are being made to use the same encoders or encoder sizes for the different sized electrical machines, if possible. This reduces the encoder variance and thus the production costs for the encoders and the logistics costs for the assembly of the electrical machines.
  • the encoders are usually integrated in a transmitter housing with plug. In motors, they are typically attached to the output side (B side) at or near the axle. However, if the fixed bearing and the brake of the motor are also located on this B side, the encoder mounting screws often collide with the mounting bolts of the bearing cap or brake. If such a problem occurs, one has until now been forced to insert another encoder or another encoder housing. set to allow both the attachment of the bearing cap and the brake as well as the seal of the encoder to the engine with a matching encoder cover. It should also be noted that the encoder or the encoder housing usually can not be changed in its angular position, which at
  • the object of the present invention is therefore to reduce the production cost of electrical machines with encoders.
  • an encoder cover for an electrical machine with a cup-shaped hood for mounting on the electric machine and for covering a transmitter wherein the hood has a central axis, and a mounting ring which engages positively with the hood, so that When attaching the mounting ring to the electrical machine, the hood is pressed against the electrical machine in the axial direction.
  • the basic encoder can be used alone with the hood without the mounting ring and in other cases, the basic encoder is attached to the mounting ring on the housing of the electric machine.
  • a donor may be permanently installed. This reduces the assembly effort and the logistics costs in the manufacture of an electrical machine.
  • the hood has a flange, which engages the mounting ring when attaching to an electrical machine.
  • This flange has dual functionality.
  • the flange serves to screw the encoder cover onto the housing of the electrical machine.
  • the flange serves to accommodate the mounting force of the mounting ring.
  • the flange and the mounting ring can have the same material thickness in the axial direction. This leads to the advantage that the flange runs flush with the mounting ring in the fastening state.
  • the mounting ring may have a conical inner bore and the flange may have a corresponding outer peripheral contour. This positive conical seat not only ensures the required centricity but also provides a certain sealing effect.
  • the flange may also have a plurality of mounting holes in recessed areas and the mounting ring have projections that close the recessed areas and / or the mounting holes form fit.
  • the recessed areas which serve to accommodate screw heads in the direct mounting of the encoder cover to the electric machine, covered and sealed in the event of attachment using the mounting ring.
  • the mounting ring may have an axially acting first seal for sealing against a housing of the electric machine, a radially acting second seal to seal against the hood and an axially acting third seal for sealing the recesses of the flange beyond.
  • the encoder cover according to the invention serves to receive an encoder and to mount this encoder to an electrical machine or to its housing. se. In this case, it is particularly advantageous to fasten the encoder to the side of the electric machine remote from the drive.
  • 1 shows a servomotor smaller design with encoder cover without mounting ring
  • 2 shows an exploded view of a bearing plate with brake, to which an encoder with mounting ring is to be attached;
  • FIG. 3 shows an assembled representation of Fig. 2; and FIG. 4 a representation of the mounting ring from the motor side with sealing rings.
  • the servo motor shown in FIG 1 is reproduced from its B side. From the opposite A-side protrudes the output shaft of the motor, but is not visible in FIG.
  • the engine has a motor housing 1 and on the A-side of a bearing plate 2. On the B-side may be an engine brake with a brake housing 3. On it is a plug 4 for controlling the motor or the brake.
  • the encoder mounting 5 here comprises a hood, which may be slightly conical, under which a donor not visible in FIG 1 is located.
  • the encoder is activated or tapped by means of a transmitter plug 7, which is fastened to the hood 6.
  • the signal can be exchanged with the encoder, for example via the plug 4, if this is designed accordingly.
  • the encoder hood 6 has a flange 8, by which it is fastened by means of fastening screws 9 on the bearing plate 3. The fastening takes place here without a mounting ring, since the servomotor has a low shaft height and thus the fastening screws 9 do not collide with those for fastening the engine brake to the engine.
  • FIGS. 2 and 3 omit the representation of the motor and instead only show a motor brake 22 with a bearing plate 12 to which a sensor hood 11 is fastened by means of screws 13 through a mounting ring.
  • the encoder housing or the encoder cover is thus designed in two parts, so that the same encoder can also be used for an electric machine other shaft height.
  • the hood 11 of the encoder cover includes the actual encoder. He is previously firmly installed in this hood 11. His electrical connections are not shown here, but can be performed on the motor brake 22 or through the bearing plate 12.
  • the hood 11 has a flange 14 with mounting holes 15 and depressions 16 in each case in the region of these bores 15.
  • the depressions 16 serve to receive the screw heads of screws which, as in the example of FIG used to attach the hood 11 directly to the motor housing or the brake housing 12.
  • the mounting ring 10 has on an inner bore radially inwardly projecting projections 17 with the contour the recesses 16 optionally including the holes 15th
  • the motor brake 22, including the encoder is shown partially cut away from the B-side perspective.
  • E- benso a screw 18 can be seen, with the brake 22 is attached to the end plate 12. This screw can also hold a bearing cap, if the hood 11 would be attached with its flange directly to the brake 22.
  • the fastening screws 13 of the mounting ring 10 are namely radially outward with respect to the fastening screws 18 of the engine brake 22.
  • the mounting ring 10 has the same material thickness in the axial direction of the electrical machine as the flange 14 of the hood 11. As a result, the two elements are flush with the surface when joined together.
  • FIG. 3 shows that the projections 17 of the mounting ring
  • the projections 17 transmit the mounting force of the mounting ring 10 in the axial direction on the hood 11 and its flange 14. At the same time seal the projections 17, the recesses 16 and therein mounting holes 15 from (see FIG 2).
  • the position of the encoder to the motor housing can be secured or specified by an additional pin in the encoder.
  • the power transmission can take place through a conical inner bore of the mounting ring.
  • the inner diameter of the mounting ring 10 tapers to the outside.
  • the outer periphery of the flange 14 of the hood 11 has a corresponding conical shape in the opposite direction.
  • the mounting ring 10 not only transmit axial force on the flange 14, but the conical seat also provides for an improved seal between the two components.
  • the encoder is always attached to an engine brake.
  • the encoder with the encoder cover according to the invention whether used in two parts or only one piece, is also attached to a bearing cap.
  • FIG. 1 shows an embodiment of the encoder mounting 5 is shown, are guided in the electrical lines radially outward. This would mean that a closed mounting ring could not be used to mount such a encoder mounting. For such cases, a segment may be recessed in the mounting ring, so that it can also be pushed over the hood 6 with radial guide channel for lines if necessary.
  • FIG. 4 shows some sealing measures that can be realized with the aid of the mounting ring.
  • the mounting ring 10 on its side facing the motor has an outer seal 19 located in an annular groove running coaxially with the ring. It is here realized with the aid of an O-ring and serves for the axial seal against the engine or brake housing ,
  • a second inner seal 20 is located on the inner circumference of the mounting ring 10 and acts in the radial direction to seal the mounting ring 10 relative to the hood 11. So that the mounting holes 15 of the hood 11 are sealed when they are not needed, the projections 17 with Provided sealing elements 21. If necessary, these not only protrude into the depressions 16, but also into the bores 15.
  • the mounting ring 10 is designed or provided with seals that the hood 17 is then sealed against the motor bearing plate or the bearing plate when the mounting ring 10 must be used to donor attachment.
  • a modular encoder mounting system can be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'objet de la présente invention est la réduction des coûts de fabrication de machines électriques. A cet effet, il doit être possible d'utiliser des capteurs uniformes pour des hauteurs d'axe différentes de la machine électrique. La présente invention concerne donc un couvercle de capteur pour une machine électrique, qui comporte un capot (11) en forme de pot destiné à être monté sur la machine électrique et à couvrir un capteur, ledit capot (11) comportant un axe médian. Le couvercle du capteur comporte en outre une bague de montage (10) qui se fixe au capot (11) par complémentarité de forme. Ainsi, lors de la fixation de la bague de montage (10) sur la machine électrique, le capot (11) est poussé dans la direction axiale contre la machine électrique, ce qui permet d'éviter que des vis de fixation (13) ne viennent buter contre d'autres vis de fixation situées sur le moteur, ce qui pourrait être le cas si le capot (11) seul est utilisé pour couvrir le capteur.
EP08786625A 2007-08-02 2008-07-30 Couvercle de capteur pourvu d'une bague de montage Withdrawn EP2174405A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007036241A DE102007036241A1 (de) 2007-08-02 2007-08-02 Geberabdeckung mit Montagering
PCT/EP2008/059991 WO2009016201A2 (fr) 2007-08-02 2008-07-30 Couvercle de capteur pourvu d'une bague de montage

Publications (1)

Publication Number Publication Date
EP2174405A2 true EP2174405A2 (fr) 2010-04-14

Family

ID=40175829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08786625A Withdrawn EP2174405A2 (fr) 2007-08-02 2008-07-30 Couvercle de capteur pourvu d'une bague de montage

Country Status (4)

Country Link
US (1) US8120219B2 (fr)
EP (1) EP2174405A2 (fr)
DE (1) DE102007036241A1 (fr)
WO (1) WO2009016201A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013217030A1 (de) * 2013-08-27 2015-03-05 Zf Friedrichshafen Ag Rotorlagesensor
EP3076524B1 (fr) 2015-03-30 2019-02-20 Siemens Aktiengesellschaft Composant de machine électrique et son procédé de fabrication
CN107567230B (zh) * 2017-10-26 2019-12-03 合肥超越电器有限责任公司 一种具有侧向易装卸监测机构的温度控制器外壳
DE102018120370A1 (de) * 2018-08-21 2020-02-27 Valeo Siemens Eautomotive Germany Gmbh Haltevorrichtung für einen Resolver an einem Lagerschild eines Elektromotors
JP2021089239A (ja) * 2019-12-05 2021-06-10 アズビル株式会社 トルクセンサ

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US3041117A (en) * 1960-11-29 1962-06-26 James E Ramsey Air cleaner for ventilated dynamo-electric machines
FR2002491A1 (fr) * 1968-02-23 1969-10-17 Arborio Mella Laura
DE3939868A1 (de) * 1989-12-01 1991-06-06 Huebner Elektromasch Ag Drehzahlaufnehmer fuer buerstenlose motoren
JPH05288289A (ja) * 1992-04-06 1993-11-02 Sekisui Chem Co Ltd ライニング管のフランジ構造
DE19641929C2 (de) 1996-10-11 2000-01-05 Ruhlatec Industrieprodukte Encoder
DE29620318U1 (de) * 1996-11-22 1997-02-20 Baumüller Nürnberg GmbH, 90482 Nürnberg Resolver- oder Drehmelder-Anordnung an einer elektrischen Maschine
DE29717415U1 (de) 1997-09-30 1999-02-04 Robert Bosch Gmbh, 70469 Stuttgart Elektrische Maschine, insbesondere schleifringloser Drehstrom-Generator
JP2002252958A (ja) * 2001-02-23 2002-09-06 Mitsubishi Electric Corp ブラシレスｄｃモータ
US6664682B2 (en) * 2001-02-28 2003-12-16 Reliance Electric Technologies, Llc Method and apparatus for securing a conduit box to a motor and motor incorporating same
DE10302130A1 (de) 2003-01-21 2004-08-05 Minebea Co., Ltd. Motorgehäuse für einen Elektromotor
DE10353330A1 (de) * 2003-11-14 2005-07-07 Siemens Ag Gehäuse für eine elektrische Maschine mit Fremdbelüftung
JP4608967B2 (ja) 2004-06-29 2011-01-12 日産自動車株式会社 ディスク型回転電機のロータ構造およびロータ製造方法
DE102004048461A1 (de) * 2004-10-05 2006-04-27 Siemens Ag Gehäuse für eine elektrische Maschine
US7301253B2 (en) * 2005-05-16 2007-11-27 S&S Marketing, Inc. Vehicle electric fan motor with universal mount

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2009016201A2 (fr) 2009-02-05
US8120219B2 (en) 2012-02-21
US20100244600A1 (en) 2010-09-30
DE102007036241A1 (de) 2009-02-05
WO2009016201A3 (fr) 2009-05-07

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