EP2856578A1 - Collecteur plan et procédé de montage d'un collecteur plan sur un axe de machine électrique - Google Patents

Collecteur plan et procédé de montage d'un collecteur plan sur un axe de machine électrique

Info

Publication number
EP2856578A1
EP2856578A1 EP13719085.6A EP13719085A EP2856578A1 EP 2856578 A1 EP2856578 A1 EP 2856578A1 EP 13719085 A EP13719085 A EP 13719085A EP 2856578 A1 EP2856578 A1 EP 2856578A1
Authority
EP
European Patent Office
Prior art keywords
plankommutator
shaft
commutator
contact
axial
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.)
Granted
Application number
EP13719085.6A
Other languages
German (de)
English (en)
Other versions
EP2856578B1 (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

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
    • H01R39/04—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 to a method for mounting a flat commutator on a shaft of an electric machine.
  • Plan commutators for electric machines are well known.
  • DE 10 2006 046 666 A1 discloses a plan commutator in which the webs in the hook-side end region and / or in the axially opposite contact segment side are stabilized at the edge of the hub body
  • End region are formed widened in the circumferential direction. In this way, a cancel or shearing of parts of the web in the
  • plan commutator in the armature of an electrical machine prevented. Due to the broadening in the circumferential direction in at least one axial end region of the web u.a. one for plastics cheaper
  • Fiber profile realized which has a positive effect on the robustness of the preferably formed of plastic hub body. Since as materials for the production of the hub body, including the webs, preferably 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.
  • Apparatus for hot-pressing (hot staking) of winding connection hooks to commutators of electrical machines In this case, a first electrode electrically contacts the corresponding winding connection hook and presses it against the contact lamella of the commutator.
  • plan commutator according to the invention Compared to the plan commutators according to the prior art, the plan commutator according to the invention with spaced apart
  • Plankommutator a second body of an electrically insulating material with radially encircling and spaced-apart contact segments, wherein each of the contact segments at an axial portion with a
  • Winding connection hook is provided, and wherein the first body the
  • Winding connection hook of the second body in the axial direction surrounds.
  • Another advantage resulting from the division of the planar commutator is the possibility to manufacture the first body with its sensitive and high-quality brush running surface separately at the end of the tape, so that damages caused by armature assembly processes of the electric machine can be effectively avoided.
  • the cost of using different Kohlegüten the contact blades is lower.
  • the first and / or the second body in each case with a radially inner, serving as a tight fit axial area uffenbar enclose a shaft of the electric machine rotatably.
  • serving as a tight fit axial region of the first body can simultaneously serve as a seal against the shaft, wherein the seal of the fixed seat is realized via a press fit to the shaft or by means of an additional O-ring.
  • optimization of the electrical connection may 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 invention relates to a method for mounting the
  • Plankommutators invention to a shaft of an electric
  • Machine in particular a direct current motor, comprising the following steps: • sliding the second body of the planar commutator onto the shaft, Connecting at least one winding of the electrical machine to the winding connection hooks of the contact segments of the second body,
  • 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 contacting the
  • Fig. 1 a perspective view of the invention
  • FIG 3 shows two perspective views (FIGS. 3a and 3b) of the first body of the planar commutator according to the invention and
  • FIG 4 shows two perspective views (FIGS. 4a and 4b) of the second body of the flat commutator according to the invention.
  • FIG. 1 shows a perspective view of the invention
  • Plankommutators 10 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 according to FIG. 1 is divided into two and has a first body 12 and a second body 14, each consisting of an electrically insulating material, for example a thermoset with glass fibers or glass beads and / or similar other solidifying elements.
  • the first and the second body 12 and 14 are made of a molding compound.
  • the second body 14 on its outer periphery radially encircling and spaced-apart contact segments 16, wherein each of the contact segments 16 at an axial portion with a
  • Winding connection hook 18 is provided. Furthermore, it can be seen that the first body 12 surrounds the winding connection hooks 18 of the second body 14 in the axial direction of the planar commutator 10. As a result, both the outer diameter and the overall height of the flat commutator can be advantageously compared to conventional flat commutators according to the state of the art Technology can be reduced. In addition, results from the embrace of
  • FIG. 2 shows a section across the plane commutator 10. Again, the first body 12 and the second body 14 can be seen with their contact segments 16 and the winding connection hook 18 integrally connected thereto. In the first body 14 are corresponding to the distance of the
  • Contact blades 20 radially circumferentially arranged as a brush tread 21.
  • the contact blades 20 are used for electrical contacting with the
  • Winding connection hook 18 connected winding of an armature of the electric machine via corresponding, guided in quivers brushes. Since these elements are known in the art and they also no
  • 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 also have a corresponding one
  • axial region 24 for rotationally fixed connection with the shaft 26, wherein the axial region 22 and / or the axial region 24 can serve as a seal against the shaft 26.
  • This is particularly advantageous in connection with a fuel pump in which damage to the contact blades 20 and / or the contact segments 16 threatens by the aggressive liquid.
  • a seal of the shaft 26 relative to the commutator 10 may be advantageous.
  • the seal can be realized for example as a press fit to the shaft 26 or by means of an additional O-ring, not shown.
  • the contact blades 20 of the first body 12 and the contact segments 16 of the second body 14 are respectively via connectors 28 which overlap in the axial direction after the joining of the two bodies 12 and 14, electrically connectable with each other.
  • the plug-in connections 28 extend in the radial direction of the planar commutator 10 and / or are formed sprung. In this way, complicated, known solder joints or pressing processes for contacting the contact blades 20 and the contact segments 16 can be avoided.
  • An improvement of the electrical contact surfaces can also be achieved if the connectors 28 of the contact blades 20 and the contact segments 16 are coated and / or provided with a surface structure.
  • the contact blades 20 usually carbon or graphite
  • the contact segments 16 usually copper or a
  • the first and the second body 12 and 14 respectively at least
  • 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. 3 and 4 the first body 12 and the second body 14 are shown separated from each other in different perspective views (FIGS. 3a, 3b, 4a, 4b).
  • Figure 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
  • the method according to the invention for mounting the planar commutator 10 on the shaft 26 of the electric machine comprises the following steps:
  • 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 during the hot-staking process during the
  • Embodiment is not limited to the figures 1 to 4 nor to the shapes shown there of the first body 12 with the contact blades 20, the second body 14 with the contact segments 16 and the size ratios to each other.
  • the exact design of the annular groove 32 is merely exemplary and not restrictive to understand.

Landscapes

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

Abstract

L'invention concerne un collecteur plan (10) comprenant des lamelles de contact (20) espacées les unes des autres qui sont disposées dans un corps (12) en matériau électriquement isolant de façon à former une surface de frottement de balais (21) unie. Le collecteur plan (10) selon l'invention est caractérisé en ce qu'il comporte un second corps (14) en matériau électriquement isolant comportant des segments de contacts (16) espacés les uns des autres et s'étendant en cercle dans le sens radial. Chacun des segments de contacts (16) est muni sur une portion axiale d'un crochet de connexion d'enroulement (18) et le premier corps (12) entoure les crochets de connexion d'enroulement (18) du second corps (14) dans le sens axial. L'invention concerne en outre une machine électrique, en particulier un moteur à courant continu, équipé du collecteur plan (10) selon l'invention, ainsi qu'un procédé de montage du collecteur plan (10) sur un axe (26) d'une machine électrique, en particulier d'un moteur à courant continu.
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 true EP2856578A1 (fr) 2015-04-08
EP2856578B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013174596A1 *

Also Published As

Publication number Publication date
WO2013174596A1 (fr) 2013-11-28
CN104303378B (zh) 2018-02-23
EP2856578B1 (fr) 2018-02-21
DE102012010251A1 (de) 2013-11-28
CN104303378A (zh) 2015-01-21

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