EP1642375A1 - Dispositif, notamment machine electrique, comportant des elements constitutifs raccordes mutuellement par l'intermediaire d'un ajustement serre - Google Patents

Dispositif, notamment machine electrique, comportant des elements constitutifs raccordes mutuellement par l'intermediaire d'un ajustement serre

Info

Publication number
EP1642375A1
EP1642375A1 EP04738487A EP04738487A EP1642375A1 EP 1642375 A1 EP1642375 A1 EP 1642375A1 EP 04738487 A EP04738487 A EP 04738487A EP 04738487 A EP04738487 A EP 04738487A EP 1642375 A1 EP1642375 A1 EP 1642375A1
Authority
EP
European Patent Office
Prior art keywords
rails
component
sleeve
housing
stator
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Withdrawn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
EP04738487A
Other languages
German (de)
English (en)
Inventor
Gerd Knoepfel
Gerhard Zink
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1642375A1 publication Critical patent/EP1642375A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators

Definitions

  • the invention is based on a device, in particular an electrical machine, with components that are connected to one another via a press fit according to the preamble of patent claim 1.
  • Components at least one outer component, in particular a housing, and at least one inner component, in particular a stator, being connected to one another via the press fit.
  • the components are connected to one another via resilient clamping sleeves.
  • the stator is pressed directly into the housing with an oversize without the use of further components between the stator and the housing.
  • the housing is deep drawn.
  • the stator is a laminated core, which is made up of stamped laminations or individual sheets and carries stator windings of the electrical machine. Since the surface on the outer circumference of the plate pack is rougher compared to the surface of the inner circumference of the housing, tensioning can occur when joining. This can lead to bearing damage, short circuits and / or blocking of the electrical machine.
  • the device according to the invention in particular an electrical machine, with components that are connected to one another via a press fit according to claim 1 has the advantage that the relative movement when the inner component is pressed into the outer component no longer takes place directly between these components, but between the rails and one of the Components, preferably between the rails and the outer component.
  • tension formation during joining can at least be reduced.
  • rails which transmit the forces of the press fit are arranged between the at least one outer and the at least one inner component, the rails being at least partially plastically deformed and / or the outer component being elastically deformed.
  • the rails are preferably arranged to run in the joining direction.
  • the joining direction can be straight, but also helical, etc.
  • the rails can easily deform or be pressed flat when pressed in, which allows the compensation of large tolerances.
  • the housing can deform in the elastic region, as a result of which larger tolerances of the inner and outer component can also be easily compensated. If the geometry changes due to thermal expansion, the housing acts as a spring element, so that the pre-tensioning force of the press fit is largely retained.
  • a further advantage is if the at least one outer component has an inner circumference and the at least one inner component has an outer circumference, the outer circumference of the inner component and the inner circumference of the outer component essentially form a gap and the rails are distributed on the inner and outer circumference.
  • the gap prevents direct contact between the inner and outer component.
  • the housing is preferably deep-drawn, since it can be manufactured so cheaply and is more easily deformed when joining due to the relatively thin wall thickness. If, for example, the housing has a round cross-section, it deforms slightly polygonally in the elastic area, which results in even greater tolerances _ i _
  • the rails have a slope or a bend for insertion at one end, the parts can be joined more easily.
  • the rails are preferably arranged in grooves in the joining direction of the inner component and / or outer component, as a result of which they have a clearly defined assembly position. It is also advantageous here to fix the rails to the inner component or outer component before joining.
  • the rails have a round cross section before joining, since this makes them easier to position. If the rails are made of a softer material than the other components to be joined, in particular of copper, preferably copper wire, it is essentially only the rails that are plastically deformed.
  • the rails are designed as ribs or press ribs or partial elevations on a sleeve, the following advantages are offered: Bridging large manufacturing tolerances by means of adjustable press areas, in particular by designing the partial elevations on the lateral surface
  • FIG. 1 shows an electrical machine in a longitudinal section along the section lines II in FIG. 2
  • FIG. 2 shows the electrical machine in a cross section according to the section lines 11-11 in FIG. 1
  • FIG. 3 shows the machine according to FIG. 1 with another component
  • FIG. 4 the machine of Figure 3 with a modified component
  • Figure 5 shows a detail of an end view of a sleeve.
  • the electrical machine 10 can be an electric motor (commutator motor, electronic)
  • the electrical machine 10 can be used as a motor, it can be used in a drive device, for example for a window regulator, blower, clutch actuator, actuator or windshield wiper of a motor vehicle.
  • the electrical machine 10 comprises a rotor 12 which is arranged on a shaft 14 which is mounted in two bearings 15.1, 15.2 of the electrical machine 10 arranged on the end face. Furthermore, the electrical machine 10 comprises a stator 16, which is arranged around the rotor 12 and in turn is fastened in a housing 18.
  • the housing 18
  • the stator 16 is constructed essentially in a ring shape and has inwardly arranged pole teeth 20.
  • the stator 16 also comprises a laminated core 19, which is constructed from punched laminations or individual sheets.
  • Windings 22 are arranged in a known manner around the pole teeth 20, which run in the axial direction of the electrical machine 10. In the case of an electronically commutated motor, for example, the windings 22 can be excitation windings. In the case of a generator, a voltage or a current can be tapped from the windings 22.
  • An electrical connection 24 is shown schematically, wherein any electronics can also be located in the machine 10.
  • the stator 16 and the housing 18 are components which are connected to one another by means of a press fit, the stator 16 being an inner component and the housing 18 being an outer component which are fitted into one another via the press fit.
  • the housing 18 has an inner circumference 26 and the stator 16 has an outer circumference 28.
  • the housing 18 and the stator 16 or the outer circumference 28 and the inner circumference 26 form a gap 30. It is of course also possible for the stator 16 and the housing 18 to be partially touch to enable direct electrical connection.
  • Rails 32 which transmit the forces of the press fit are arranged between the housing 18 and the stator 16.
  • three rails are provided which are arranged uniformly on the inner or outer circumference 26, 28. A different number and an uneven distribution are of course also possible.
  • the rails run at least over part of the length of the plate pack 19 and are essentially the same as the arrows of the section lines II
  • the rails 32 are preferably arranged in grooves 34, which are formed on the outer circumference 28 of the stator 16 and likewise run in the joining direction that corresponds to the arrows of the section lines II (FIG. 1). Alternatively or additionally, such grooves 34 can be formed on the inner circumference 26 of the housing 18. As can be clearly seen from FIG. 2, the rails 32 protrude from the grooves 34. At the respective end 36 of the rails 32, which points in the joining direction II, the rails 32 have a slope - or, as shown in FIG. 1, a bend 38 directed inwards or away from the inner circumference 26 of the housing 18. This facilitates insertion into the housing 18.
  • the rails 32 can be fixed on the stator 16 before joining.
  • the bend 38 also provides a measure by which the rails 32 do not slip when joining.
  • the rails can also be fixed on the inner circumference 26 of the housing 18. In this case, bevels or bends 38 would point outwards or from the outer circumference 28 of the stator 16 we -'gS.
  • the rails 32 are made of a softer material than the components to be joined, i.e. the stator 16 and / or the housing 18.
  • the rails are made of copper, preferably copper wire, or a copper alloy, as well as aluminum or an aluminum alloy.
  • the rails 32 can be made of another material, for example steel.
  • the rails 32 have a round cross section before joining. This is particularly advantageous since finished copper wires can be used, which only need to be cut to the required size.
  • the rails 32 are arranged in the grooves of the plate pack 19 or the stator 16. Then the stator 16 with the rails 32 is pressed into the housing 18.
  • the rails 32 are at least partially plastic and / or the housing 18 is elastically deformed. If the rails 32 are plastically deformed and / or the housing 18 is elastically deformed, the components do not scrape along in such a way that chips are formed.
  • the rails 32 can also be used on other devices which have inner and outer components fitted into one another via a press fit.
  • the components also do not have to have circular cross-sectional areas. Round or angular cross-sectional areas are also possible.
  • the rails 32 are designed as ribs or partial elevations on a sleeve 40 or an open jacket. They are evenly distributed on the circumference of the sleeve 40.
  • the rails 32 are designed such that the volume of the depressions corresponds approximately to the volume of the cant. In this way, the sleeve 40 can be machined from a flat Cut to size.
  • the sleeve 40 has an axially extending slot 42.
  • the sleeve 40 has an inwardly directed collar 38 on an end face with which it is pushed into the housing 18 (see FIG. 1).
  • the other parts are the same as in Figures 1 and 2 and also have the same reference numerals, which is why reference is made to the statements there.
  • the rails 32 face inwards. As a result, the rails 32 bear against the stator and are pressed together during the joining.
  • the smooth side of the sleeve 40 which in this case is on the outside, lies against the housing 18.
  • the rails 32 can have an angle other than zero degrees with respect to the rotor shaft direction. If the rails are parallel to the axis, ie have an angle of zero degrees, the stator 16 does not tend to rotate relative to the housing 18 when pressed in. Due to the use in EC motors and the precise assignment between the phase positions of the working magnet and that of the pole teeth 20, an exact position of the stator 16 in the housing 18 is possible.
  • the sleeve 40 is made of a ductile material such as e.g. Aluminum, copper, lead, brass, etc., which enables easier production and integration into the series production process.
  • FIG. 4 shows a sleeve 44 in which, in contrast to the sleeve 40, only the rails 32 are directed outwards. As a result, the sleeve 44 can rest against the stator 16 with its smooth inside.
  • stator 16 is clamped radially via an open cylindrical sleeve, which consists of a ductile material, via partial elevations or rails 32 to the housing 18.
  • the shape of the rails 32 or press ribs is preferably the result of a plastic deformation of a flat blank, which is then shaped into the sleeve 40.
  • stator 116 is clamped over the sleeve 40, 44 or the open ring in the housing 18.
  • the collar 38 is seen at the front in the pressing direction arranged.
  • the sleeve 40 also has the slot 42 or gap welded on after being pressed in. It is advantageous if both the stator 16 and the housing 18 have a cylindrical shape on the mutually facing lateral surfaces.
  • a modified sleeve 46 is shown in sections in FIG.
  • Rails 32 are provided on both sides of this sleeve 46.
  • the rails 32 can be mirrored opposite one another or can also be arranged offset opposite one another.
  • the advantage of one or more pairs of rails or ribs lying opposite one another is that these rails 32 could be used as centering means. This does not affect the original function of the pressing.
  • the centering between the stator 16 and the housing 18 can be implemented on the outside of the stator 16 by one or more grooves and on the inside of the housing 18 a plurality of grooves. The rails 32 would then be immersed in the grooves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un dispositif (10), notamment une machine électrique, comportant des éléments constitutifs (16, 18) raccordés mutuellement par l'intermédiaire d'un ajustement serré (10). Au moins un élément constitutif extérieur (18), notamment un boîtier, et au moins un élément constitutif intérieur (16), notamment un stator, sont emboîtés l'un dans l'autre par l'intermédiaire d'un ajustement serré. Des rails (32), transmettant les forces de l'ajustement serré, sont placés entre l'élément constitutif extérieur (16) et l'élément constitutif intérieur (18). Ces rails (32) sont déformés au moins partiellement de manière plastique et/ou l'élément constitutif extérieur (18) est déformé élastiquement, ce qui permet de compenser facilement les tolérances.
EP04738487A 2003-06-26 2004-05-07 Dispositif, notamment machine electrique, comportant des elements constitutifs raccordes mutuellement par l'intermediaire d'un ajustement serre Withdrawn EP1642375A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003128800 DE10328800A1 (de) 2003-06-26 2003-06-26 Vorrichtung, insbesondere elektrische Maschine, mit über einen Presssitz miteinander verbundenen Bauteilen
PCT/DE2004/000959 WO2005011084A1 (fr) 2003-06-26 2004-05-07 Dispositif, notamment machine electrique, comportant des elements constitutifs raccordes mutuellement par l'intermediaire d'un ajustement serre

Publications (1)

Publication Number Publication Date
EP1642375A1 true EP1642375A1 (fr) 2006-04-05

Family

ID=34041598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738487A Withdrawn EP1642375A1 (fr) 2003-06-26 2004-05-07 Dispositif, notamment machine electrique, comportant des elements constitutifs raccordes mutuellement par l'intermediaire d'un ajustement serre

Country Status (5)

Country Link
EP (1) EP1642375A1 (fr)
JP (1) JP2007507195A (fr)
CN (1) CN100550573C (fr)
DE (1) DE10328800A1 (fr)
WO (1) WO2005011084A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4792915B2 (ja) * 2005-10-21 2011-10-12 日本電産株式会社 ブラシレスモータ
DE102005054886B4 (de) * 2005-11-17 2007-12-27 Airbus Deutschland Gmbh Anordnung zur Bereitstellung befeuchteter Raumluft für ein Flugzeug
DE102007038522A1 (de) * 2007-08-16 2009-02-19 Robert Bosch Gmbh Statorbefestigung mittels Spannpratzen
JP5572508B2 (ja) * 2010-09-30 2014-08-13 日立オートモティブシステムズ株式会社 回転電機
JP2012161237A (ja) * 2011-01-11 2012-08-23 Denso Corp 回転電機の固定子及びその製造方法
JP6319014B2 (ja) * 2014-09-24 2018-05-09 日産自動車株式会社 回転電機の組立方法および回転電機
JP6319015B2 (ja) * 2014-09-24 2018-05-09 日産自動車株式会社 回転電機の組立方法および回転電機
WO2016076166A1 (fr) * 2014-11-11 2016-05-19 株式会社ミツバ Moteur d'essuie-glace sans balai
CH710732A1 (de) 2015-02-03 2016-08-15 Reishauer Ag Elektrische Maschine.
EP3605805B1 (fr) 2017-11-20 2021-09-01 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Moteur et son procédé de fabrication
CN108565999B (zh) * 2018-01-03 2019-11-12 珠海格力电器股份有限公司 电机组件及具有其的压缩机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB754430A (en) * 1954-06-11 1956-08-08 Rade Koncar Tvornica Elek Cnih Improvements in stators for dynamo-electric machines
US3221195A (en) * 1961-11-24 1965-11-30 Allis Chalmers Mfg Co Core for dynamoelectric machines
JPH10295050A (ja) * 1997-04-15 1998-11-04 Shibaura Eng Works Co Ltd 電動機
JPH1189195A (ja) * 1997-09-10 1999-03-30 Nippon Electric Ind Co Ltd Ｓｒモータのステータ構造
JP3790442B2 (ja) * 2001-05-29 2006-06-28 建準電機工業股▲分▼有限公司 半径方向巻線のステータ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005011084A1 *

Also Published As

Publication number Publication date
JP2007507195A (ja) 2007-03-22
CN100550573C (zh) 2009-10-14
WO2005011084A1 (fr) 2005-02-03
DE10328800A1 (de) 2005-02-10
CN1813388A (zh) 2006-08-02

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