EP2308155A2 - Collecteur pour machine électrique et système - Google Patents

Collecteur pour machine électrique et système

Info

Publication number
EP2308155A2
EP2308155A2 EP09780062A EP09780062A EP2308155A2 EP 2308155 A2 EP2308155 A2 EP 2308155A2 EP 09780062 A EP09780062 A EP 09780062A EP 09780062 A EP09780062 A EP 09780062A EP 2308155 A2 EP2308155 A2 EP 2308155A2
Authority
EP
European Patent Office
Prior art keywords
commutator
geometry
displacement
lamellae
circumferential direction
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Withdrawn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
EP09780062A
Other languages
German (de)
English (en)
Inventor
Daniel Klumpp
Michael Huber
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 EP2308155A2 publication Critical patent/EP2308155A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/14—Fastenings of commutators or slip-rings to shafts

Definitions

  • Commutator for an electric machine as well as system
  • the invention relates to a commutator according to the preamble of claim 1 and to a system according to claim 8.
  • a commutator for an electric machine is known.
  • a commutator or commutator commutator is a device for current application in electrical machines see.
  • the current application generates a current that flows from armature winding to armature winding of a rotor of the electric machine or to change the current in order to generate a torque during a rotational movement of the armature winding.
  • Commutators have a multiplicity of copper lamellae which are arranged next to one another in the circumferential direction and interact with sliding contacts for making electrical contact.
  • Known commutators have a central passage opening, by means of which they can be pushed onto an armature shaft of the electric machine and fixed by pressing seats at this.
  • the commutator on the geometry of the circumferentially arranged lamellar slots is oriented (aligned).
  • the position detection takes place optically or mechanically.
  • the known approach to alignment of the commutator results in position inaccuracies between the armature winding slots in the armature package and the commutator of up to about ⁇ 1.5 °. On the one hand, this is due to production inaccuracies of the commutator, in particular to pitch tolerances between the slat slots, as well as to positional tolerances during assembly. If the commutator is pushed further, the radial alignment may additionally deteriorate.
  • the invention is therefore based on the object to propose a commutator, can be at least largely avoided with the position inaccuracies between the commutator and another element, such as the anchor assembly of an electric machine or a sawing device for producing the Lammellenschlitze. Furthermore, the object is a system for avoiding position inaccuracies between the commutator and another element.
  • a commutator designed according to the concept of the invention has a geometry (alignment geometry) on a front side remote from the armature packet, preferably in the mounted state, which is designed for positive connection to a counter-geometry of a displacement and / or alignment device ,
  • the geometry must be designed such that torques acting on it in the circumferential direction, which occur, for example, during the sliding of the commutator, can be supported and / or introduced.
  • a displacement device Under a displacement device is a means for axial displacement of the commutator, in particular along the armature shaft of an electric machine in the assembly of an electric machine to understand.
  • An alignment device is to be understood as a device with which the commutator can be pivoted about its longitudinal center axis, in order to thereby move the commutator in the circumferential direction.
  • an element in particular an anchor assembly of an electrical machine or a saw of a manufacturing device for producing the slat slots to align exactly.
  • an axial displacement possibility and a pivoting possibility in the circumferential direction are combined in a common displacement and alignment device.
  • Winding process subsequent Axialverschiebungs Colour twisting of the commutator relative to the anchor packet can be safely avoided. Due to the higher positional accuracy of a fully assembled, formed according to the concept of the invention commutator characteristic fluctuations are reduced from electrical machine to electrical machine.
  • the geometry (alignment geometry) of the commutator is arranged in a hub section of the commutator surrounding the passage opening radially on the outside.
  • This hub portion (main body) is preferably made of plastic, for example by compression or injection molding, preferably as a sintered part.
  • the geometry is located at a radial distance from, preferably formed of copper, preferably arranged on the outer circumference, lamellae. It is conceivable to design the geometry with respect to an end plane of the commutator sublime and / or deepened. With regard to a minimization of the space, it is particularly preferable to have an exclusively recessed configuration of the geometry, that is to say axially, extending into the commutator.
  • the geometry (alignment geometry) of the commutator is designed as a tooth geometry with extending in the radial direction and circumferentially juxtaposed teeth.
  • the provision of a multiplicity of teeth which are arranged next to one another in the circumferential direction makes it possible to securely support or pass on torques acting in the circumferential direction.
  • the tooth geometry has a number of teeth corresponding to the number of lamellae.
  • the number of not necessarily, but preferably, radially tapered teeth corresponds to the number of louver hooks for fixing and electrically contacting the armature winding, so that the relative position of a geometry cooperating displacement and / or alignment device defines exactly relative to each hook is.
  • the teeth are each arranged in a region in the circumferential direction between two adjacent lamellae or on a hook in each case is particularly preferred.
  • the commutator in which the respective lamellae having lamellae are arranged on the outer circumference of the commutator, wherein the lamellae slots extend in the axial and radial directions.
  • the lamellae form, at least in sections, preferably completely, the lateral surface of the, at least approximately, hollow-cylindrical commutator.
  • the invention also leads to a system comprising a commutator formed according to the concept of the invention.
  • the system comprises a displacement and / or alignment device for axially displacing and / or rotating the commutator in the circumferential direction.
  • the displacement and / or alignment device comprises a counter-geometry corresponding to the end-side geometry of the commutator, wherein the geometry and the counter-geometry are designed and matched to one another such that they can support torques acting in the circumferential direction.
  • An embodiment of the system can be realized in which, in addition to the commutator, it has exclusively a displacement device or exclusively an alignment device, or else a displacement device and an alignment device. Particularly preferred is an embodiment of the system in which a combined displacement and / or alignment device is provided in addition to the commutator.
  • the counter-geometry of the displacement and / or alignment device is formed congruent to the frontal geometry of the commutator.
  • the displacement and / or alignment device can be a component of a mounting device for axially positioning the commutator relative to an armature package on the armature shaft and / or for aligning the commutator in the circumferential direction on the armature shaft relative to the armature core.
  • the anchor package is preferably a sheet-metal lamination stack.
  • the displacement and / or alignment device may be a component of a production device, in particular a sawing device, wherein the displacement and / or alignment device in particular for aligning the commutator relative to at least one saw of the sawing device for introducing the slats electrically mutually insulating slat slots is formed.
  • FIG. 1 shows a perspective view of a commutator with an end-face geometry for aligning the commutator in the circumferential direction.
  • the commutator 1 consists of a base body 2 made of plastic, which forms a hub portion 4, which is bounded radially inwardly by the inner circumference of a running in the axial direction, circular contoured through hole 3.
  • the passage opening 3 serves to receive an armature shaft of an electric machine, on which the commutator 1 is preferably fixed in a rotationally fixed manner by means of a press fit.
  • a plurality of circumferentially spaced lamellae 5 are arranged made of copper.
  • two lamellae 5 arranged next to one another are separated from one another and thus electrically insulated from one another in the axial and also somewhat in the radial direction into the basic body 2 extending lamellar slots 6.
  • the lamellae 5 are made of a metal strip which was anchored during spraying of the base body 2 in this.
  • Each lamella 5 has an axially projecting, curved lamella hooks 7.
  • the lamella hooks 7 are used for fixing and electrical contacting of an armature winding, not shown.
  • the armature winding is clamped by hot caulking of the lamella hooks 7.
  • the lamellae 5 form the lateral surface 8 of the substantially hollow-cylindrical commutator 1, which is interrupted by the lamellae slots 6, wherein sliding contacts, which electrically contact the lamellae 5, slide on the outer surface 8 during operation of the electrical machine.
  • the commutator 1 is shown in a view of an end face 9, which faces away from an anchor packet when mounted in the electric machine commutator 1.
  • the front side 9 plays in the commutator 1 shown a crucial role both in the manufacture of the commutator 1, in particular during insertion (sawing) of the lamellae slots 6 and when joining the commutator 1 on the armature shaft, in particular during axial displacement of the commutator 1 after the winding process.
  • a recessed geometry 10 is introduced. This is located in the main body 2 or in the hub portion 4 and was introduced as an integral geometry during the manufacture of the main body 2, in particular during injection molding, by a corresponding tool molding.
  • the geometry 10 is aligned concentrically to the longitudinal central axis L of the commutator 1 and has a circumferential toothing structure 11 with a plurality of teeth 12 arranged next to one another in the circumferential direction.
  • the number of teeth 12 corresponds to the number of lamellae 5 and thus the lamellae slots 6 and the lamellar hooks 7.
  • the teeth 12 taper in the radial direction outwardly pointed, wherein between each two circumferentially spaced lamellae 5, a slat slot 6 is provided.
  • the flanks 13, 14 of the teeth 12 of the toothing structure 11 form engagement surfaces for supporting a torque.
  • said counter-geometry is formed for the shown commutator 1 as a raised geometry with a tooth structure, wherein the teeth form congruent in as recesses formed teeth 12 of the geometry 10 can be inserted. From the counter-geometry to the flanks 13, 14 matching counter flanks (Gegenabstützflachen) are provided.
  • the displacement and / or alignment device can displace the commutator 1 axially along its longitudinal central axis L and prevent the commutator 1 from rotating about the longitudinal central axis L due to the engagement of the counter-geometry in the geometry 10. If the commutator 1 is to be aligned with another element, in particular an armature plate of the electric machine or a saw during the production of the commutator 1, the displacement and / or alignment device can rotate the commutator 1 about the desired angle of rotation about the longitudinal central axis L be realized.

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

L'invention concerne un collecteur (1) destiné à une machine électrique. Ce collecteur présente plusieurs lames (5) juxtaposées séparées par des fentes (6), ces lames étant destinées à coopérer avec des contacts à glissement, ainsi qu'une ouverture de passage (3) centrale permettant de placer le collecteur (1) sur un arbre d'induit d'un moteur électrique. Selon l'invention, ce collecteur (1) présente sur la face une géométrie (10) destinée à coopérer par complémentarité de forme avec un dispositif de déplacement et/ou d'alignement. L'invention concerne en outre un système.
EP09780062A 2008-07-25 2009-07-01 Collecteur pour machine électrique et système Withdrawn EP2308155A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810040717 DE102008040717A1 (de) 2008-07-25 2008-07-25 Kommutator für eine elektrische Maschine sowie System
PCT/EP2009/058270 WO2010009959A2 (fr) 2008-07-25 2009-07-01 Collecteur pour machine électrique et système

Publications (1)

Publication Number Publication Date
EP2308155A2 true EP2308155A2 (fr) 2011-04-13

Family

ID=41428825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09780062A Withdrawn EP2308155A2 (fr) 2008-07-25 2009-07-01 Collecteur pour machine électrique et système

Country Status (3)

Country Link
EP (1) EP2308155A2 (fr)
DE (1) DE102008040717A1 (fr)
WO (1) WO2010009959A2 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6369446A (ja) * 1986-09-09 1988-03-29 Makita Denki Seisakusho:Kk 整流子
EP1668747A1 (fr) * 2003-08-21 2006-06-14 Robert Bosch GmbH Commutateur destine a une machine electrique

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR636521A (fr) * 1926-07-22 1928-04-11
FR813997A (fr) * 1936-02-17 1937-06-12 Labinal Ets Procédé de fabrication d'un collecteur pour moteur électrique, collecteur en résultant et moteurs munis d'un tel collecteur
US3080615A (en) * 1958-11-17 1963-03-12 Gen Motors Corp Commutator and method of attaching same
FR1324580A (fr) * 1962-05-24 1963-04-19 Sandvikens Jernverks Ab Rehausse pour lingotière
FR1493621A (fr) * 1966-07-01 1967-09-01 Sev Marchal Nouveau procédé de fabrication de collecteurs pour machines électriques tournantes et collecteurs obtenus par ledit procédé
JPS4837761B1 (fr) * 1969-06-13 1973-11-13
US3987539A (en) * 1974-01-31 1976-10-26 Consolidated Foods Corporation Method of making a molded commutator
YU81780A (en) * 1980-03-24 1982-10-31 Kolektor Method of producing a cast in commutator
YU39889B (en) * 1981-09-29 1985-04-30 Kolektor Semi-manufactured commutator for commutaors
DE3201027C2 (de) * 1982-01-15 1986-11-27 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum Herstellen eines Kommutatorringes
US4456846A (en) * 1982-12-29 1984-06-26 General Electric Company Commutator assembly
FR2742008B1 (fr) * 1995-12-05 1998-02-20 Rockwell Lvs Procede de fabrication d'un collecteur de machine tournante et collecteur fabrique selon ce procede
FR2769416B1 (fr) * 1997-10-07 1999-12-24 Meritor Light Vehicle Sys Ltd Procede de fabrication d'un collecteur pour machine tournante et collecteur fabrique selon ce procede
JP3934264B2 (ja) * 1998-11-12 2007-06-20 アスモ株式会社 整流子及びその整流子を備えたモータ、整流子片、並びに整流子の形成方法
DE10209114A1 (de) 2002-03-01 2003-09-11 Bosch Gmbh Robert Kommutator für eine elektrische Maschine
DE102005005680A1 (de) * 2005-02-08 2006-08-10 Robert Bosch Gmbh Kommutator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6369446A (ja) * 1986-09-09 1988-03-29 Makita Denki Seisakusho:Kk 整流子
EP1668747A1 (fr) * 2003-08-21 2006-06-14 Robert Bosch GmbH Commutateur destine a une machine electrique

Also Published As

Publication number Publication date
WO2010009959A2 (fr) 2010-01-28
WO2010009959A3 (fr) 2010-06-03
DE102008040717A1 (de) 2010-01-28

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