EP2856578B1 - Commutateur plan et méthode de montage du commutateur plan sur un arbre d'un moteur à courant continu. - Google Patents

Commutateur plan et méthode de montage du commutateur plan sur un arbre d'un moteur à courant continu. Download PDF

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Publication number
EP2856578B1
EP2856578B1 EP13719085.6A EP13719085A EP2856578B1 EP 2856578 B1 EP2856578 B1 EP 2856578B1 EP 13719085 A EP13719085 A EP 13719085A EP 2856578 B1 EP2856578 B1 EP 2856578B1
Authority
EP
European Patent Office
Prior art keywords
flat commutator
shaft
contact
commutator
winding
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.)
Not-in-force
Application number
EP13719085.6A
Other languages
German (de)
English (en)
Other versions
EP2856578A1 (fr
Inventor
Benoit Monzie
Ursula STUCKE
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 EP2856578A1 publication Critical patent/EP2856578A1/fr
Application granted granted Critical
Publication of EP2856578B1 publication Critical patent/EP2856578B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R39/04—Commutators
    • H01R39/06—Commutators other than with external cylindrical contact surface, e.g. flat commutators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators

Definitions

  • the invention relates to a flat commutator and a method for mounting a flat commutator on a shaft of an electric machine, in particular a DC motor, according to the preamble of the independent claims.
  • Plan commutators for electric machines are well known. So goes out of the DE 10 2006 046 666 A1 a plane commutator, in which the webs in the hook-side end region and / or in the axially opposite contact segment-side end region are widened in the circumferential direction for marginal stabilization of the hub body. In this way, a breaking or shearing off of parts of the web in the further processing of the planar commutator in the armature of an electrical machine is prevented. Due to the broadening in the circumferential direction in at least one axial end region of the web, inter alia, a more favorable for plastics fiber profile is realized, which has a positive effect on the robustness of the preferably formed of plastic hub body.
  • thermosets are used with glass fibers or glass beads and / or similar other solidifying elements also contributes their homogeneous distribution due to a larger plastic mass in the widened portion of the webs to stabilize and to increase the mechanical strength of the hub body in these areas.
  • a first electrode electrically contacts the corresponding winding connection hook and presses it against the contact lamella of the commutator.
  • the planar commutator according to the invention with spaced-apart contact blades, which are arranged in a first body of an electrically insulating material such that they form a flat brush running surface in the axial direction, has the advantage that its height and be Outside diameter are reduced.
  • the planar commutator according to the invention has a second body of an electrically insulating material with radially encircling and spaced contact segments, each of the contact segments is provided at an axial portion with a winding connection hook, and wherein the first body surrounds the winding connection hooks of the second body in the axial direction.
  • the first and / or the second body in each case surround a shaft of the electric machine in a rotationally fixed manner in each case with a radially inner axial region serving as a tight fit.
  • serving as a tight fit axial region of the first body can also serve as a seal against the shaft, the seal of the Fixed seat is realized via a press fit to the shaft.
  • the contact blades of the first body and the contact segments of the second body are electrically connectable to each other in a particularly advantageous manner in each case via radial and / or axial plug connections. In this way, elaborate, known solder joints or pressing processes for contacting the contact blades and the contact segments can be avoided.
  • An optimization of the electrical connection can also result if the contact blades of the first body and the contact segments 16 of the second body are coated or uncoated and / or provided with a surface structure.
  • first and the second body each have at least at parts of their contact points a positive-locking geometry, which serves as a rotation between the first and the second body.
  • a positive-locking geometry which serves as a rotation between the first and the second body.
  • the first body has on its outer circumference an axial annular groove into which an O-ring or a filling material can be introduced as a seal.
  • the advantage of the method according to the invention over the prior art is the avoidance of a heat input on the brush running surface of the planar commutator, which can occur during the hot-staking process during the contacting of the windings with the winding connection hooks. In addition, it is avoided that it can cause damage to the brush surface during contacting and mounting the armature on the shaft. In addition, even after the contacting of the winding connection hooks with the windings of the direct current stator, different carbon layers of the contact laminations can be used depending on the requirements for the direct current gate.
  • FIGS. 1 to 4 explained by way of example, wherein like reference numerals in the figures indicate like components with a same operation.
  • FIG. 1 shows a perspective view of the plan commutator 10 according to the invention of an electric machine, not shown.
  • the person skilled in the art knows from the prior art where such a planar commutator is usefully arranged on a shaft of the electric machine and what purpose it fulfills. Insofar should not be discussed further here.
  • planar commutator according to the invention can also be used for applications in electric generators or outside of motor vehicles.
  • the plan commutator 10 according to the invention FIG. 1 is divided into two and has a first body 12 and a second body 14, each consisting of an electrically insulating material, such as a thermoset with glass fibers or glass beads and / or similar other solidifying elements exist.
  • the first and the second body 12 and 14 are made of a molding compound.
  • the second body 14 has at its outer circumference radially encircling and spaced-apart contact segments 16, wherein each of the contact segments 16 is provided at an axial portion with a winding connection hook 18.
  • the first body 12, the winding connection hooks 18 of the second body 14 in the axial direction of the planar commutator 10 surrounds.
  • FIG. 2 shows a section across the Plankommutator 10. Again, the first body 12 and the second body 14 with its contact segments 16 and the integrally connected winding connection hook 18 can be seen. In the first body 14 16 corresponding spaced apart contact segments of the second body 16 spaced-apart contact blades 20 are arranged radially circumferentially as brush running surface 21.
  • the contact blades 20 are used for electrical contacting of a connected to the winding connection hook 18 winding an armature of the electric machine via corresponding, guided in quivers brushes. Since these elements are known to the person skilled in the art and, moreover, they have no relevance to the invention, their representation should be omitted for the sake of clarity.
  • the first body 12 engages with a radially inner, serving as a tight fit axial portion 22 rotationally fixed to a shaft 26 of the electric machine.
  • the second body 14 may have a corresponding axial portion 24 for rotationally fixed connection with the shaft 26, wherein the axial portion 22 and / or the axial portion 24 may serve as a seal against the shaft 26.
  • a seal of the shaft 26 relative to the commutator 10 may be advantageous.
  • the seal is realized as a press fit to the shaft 26.
  • the contact blades 20 of the first body 12 and the contact segments 16 of the second body 14 are each electrically connected to each other via connectors 28 which overlap in the axial direction after joining the two bodies 12 and 14 together.
  • the plug-in connections 28 extend in the radial direction of the planar commutator 10 and / or are formed sprung.
  • the first and the second body 12 and 14 respectively at least at partial areas of their contact points form-fitting Geometry 30, which serves as anti-rotation.
  • the form-fitting geometry 30 of the second body 14 serves as a radial locking during the winding process of the winding of the electric machine.
  • a radially encircling, axial annular groove 32 is provided on the outer circumference of the first body 12, into which, for example, an O-ring, not shown, or a filling material can be introduced.
  • FIGS. 3a, 3b ; 4a, 4b are each separated from each other, the first body 12 and the second body 14 in different perspective views ( FIGS. 3a, 3b ; 4a, 4b ).
  • FIG. 3b the inner structure of the first body 12 with the connectors 28 of the contact blades 20 and serving as a tight fit axial portion 22 and the arrangement of Contact segments 16 of the second body 14, the positive-locking geometry 30 and serving as a tight fit axial region 24 in the FIGS. 4a and 4b ,
  • the advantage of the method according to the invention over the prior art is the avoidance of a heat input on the brush running surface 21 of the planar commutator 10, which can occur during the hot-staking process during the contacting of the windings with the winding connection hooks 18. In addition, it is avoided that it may cause damage to the brush surface 21 during contacting and mounting of the armature on the shaft 26. In addition, even after the contacting of the winding connection hooks 18 with the windings of the direct current stator, different carbon layers of the contact laminations can be used as a function of the requirements for the direct current gate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)

Claims (9)

  1. Commutateur plan (10) présentant des lamelles de contact (20) disposées à distance les unes des autres dans un premier corps (12) en matériau électriquement isolant de manière à former dans la direction axiale une surface plane (21) de déplacement de balais,
    le commutateur plan (10) présentant un deuxième corps (14) en matériau électriquement isolant doté de segments radiaux de contact (16) disposés à distance les uns des autres à la périphérie,
    chacun des segments de contact (16) étant doté dur une section axiale d'un crochet (18) de raccordement d'enroulement,
    le premier corps (12) chevauchant les crochets (18) de raccordement d'enroulement du deuxième corps (14) dans la direction axiale,
    caractérisé en ce que
    le premier et/ou le deuxième corps (12, 14) chevauchent indirectement chacun à rotation solidaire un arbre (26) doté une partie axiale (22, 24) radialement intérieure servant de siège de pose,
    en ce que la partie axiale (22) radialement intérieure servant de siège de pose du premier corps (12) sert en même temps de joint d'étanchéité vis-à-vis de l'arbre (26) et
    en ce que l'étanchéité du siège de pose s'obtient par compression sur l'arbre (26).
  2. Commutateur plan (10) selon l'une des revendications précédentes, caractérisé en ce que les lamelles de contact (20) du premier corps (12) et les segments de contact (16) du deuxième corps (14) peuvent être raccordés électriquement les unes aux autres par les liaisons enfichables (28) radiales et/ou axiales.
  3. Commutateur plan (10) selon la revendication 2,
    caractérisé en ce que les lamelles de contact (20) du premier corps (12) et les segments de contact (16) du deuxième corps (14) sont revêtus ou non revêtus et/ou sont dotés d'une structure de surface.
  4. Commutateur plan (10) selon l'une des revendications précédentes, caractérisé en ce que le premier et le deuxième corps (12, 14) présentent chacun sur au moins certaines parties de leurs emplacements en contact des géométries (30) de formes complémentaires qui servent de blocage contre des rotations entre le premier et le deuxième corps (12, 14).
  5. Commutateur plan (10) selon la revendication 4,
    caractérisé en ce que la géométrie (30) de forme complémentaire du deuxième corps (14) sert de blocage radial pendant l'opération d'enroulement d'une bobine de machine électrique et en particulier d'un moteur à courant continu.
  6. Commutateur plan (10) selon l'une des revendications précédentes, selon la revendication 4, caractérisé en ce que le premier corps (12) présente une rainure axiale (32) à sa périphérie extérieure.
  7. Commutateur plan (10) selon la revendication 6,
    caractérisé en ce qu'un joint torique ou un matériau de remplissage peuvent être placés comme joint d'étanchéité dans la rainure axiale (32).
  8. Machine électrique, notamment moteur à courant continu, dotée d'un commutateur plan (10) selon l'une des revendications précédentes.
  9. Procédé de montage d'un commutateur plan (10) selon l'une des revendications précédentes 1 sur l'arbre (26) d'une machine électrique, notamment d'un moteur à courant continu, le procédé comprenant les étapes suivantes :
    - sertissage du deuxième corps (14) du commutateur plan (10) sur l'arbre (26),
    - raccordement d'au moins un enroulement de la machine électrique au crochet (18) de raccordement d'enroulement des segments de contact (16) du deuxième corps (14),
    - placement du premier corps (12) du commutateur plan (10) sur l'arbre (26) de telle sorte que le premier corps (12) chevauche les crochets (18) de raccordement d'enroulement du deuxième corps (14) dans la direction axiale.
EP13719085.6A 2012-05-25 2013-04-24 Commutateur plan et méthode de montage du commutateur plan sur un arbre d'un moteur à courant continu. Not-in-force EP2856578B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012010251A DE102012010251A1 (de) 2012-05-25 2012-05-25 Plankommutator und Verfahren zur Montage eines Plankommutators auf eine Welle einer elektrischen Maschine
PCT/EP2013/058432 WO2013174596A1 (fr) 2012-05-25 2013-04-24 Collecteur plan et procédé de montage d'un collecteur plan sur un axe de machine électrique

Publications (2)

Publication Number Publication Date
EP2856578A1 EP2856578A1 (fr) 2015-04-08
EP2856578B1 true EP2856578B1 (fr) 2018-02-21

Family

ID=48190961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13719085.6A Not-in-force EP2856578B1 (fr) 2012-05-25 2013-04-24 Commutateur plan et méthode de montage du commutateur plan sur un arbre d'un moteur à courant continu.

Country Status (4)

Country Link
EP (1) EP2856578B1 (fr)
CN (1) CN104303378B (fr)
DE (1) DE102012010251A1 (fr)
WO (1) WO2013174596A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004003146B4 (de) * 2003-01-22 2023-08-24 Aisan Kogyo Kabushiki Kaisha Motor, Kraftstoffpumpe, Kommutator und Verfahren zur Herstellung eines Kommutators
DE102004051460A1 (de) 2004-10-22 2006-04-27 Robert Bosch Gmbh Verfahren und Vorrichtung zum Heißverpressen von Haken an Kommutatoren
DE102005028791A1 (de) * 2005-06-16 2006-12-28 Kautt & Bux Gmbh Plankommutator und Verfahren zur Herstellung eines Plankommutators
DE102006021696B4 (de) * 2006-05-10 2014-04-24 Kolektor Group D.O.O. Verfahren zur Herstellung eines Rotors einer dynamoelektrischen Maschine sowie Rotor einer dynamoelektrischen Maschine
DE102006046666A1 (de) 2006-09-29 2008-04-03 Robert Bosch Gmbh Plankommutator

Also Published As

Publication number Publication date
EP2856578A1 (fr) 2015-04-08
CN104303378B (zh) 2018-02-23
CN104303378A (zh) 2015-01-21
DE102012010251A1 (de) 2013-11-28
WO2013174596A1 (fr) 2013-11-28

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