WO2006045652A1 - Procede et dispositif de compression a chaud de crochets sur des commutateurs - Google Patents

Procede et dispositif de compression a chaud de crochets sur des commutateurs Download PDF

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Publication number
WO2006045652A1
WO2006045652A1 PCT/EP2005/054163 EP2005054163W WO2006045652A1 WO 2006045652 A1 WO2006045652 A1 WO 2006045652A1 EP 2005054163 W EP2005054163 W EP 2005054163W WO 2006045652 A1 WO2006045652 A1 WO 2006045652A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
hooks
commutator
hook
sides
Prior art date
Application number
PCT/EP2005/054163
Other languages
German (de)
English (en)
Inventor
Werner Herm
Helmut Huber
Klaus-Dieter Haefele
Edgar Seiler-Wegner
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 WO2006045652A1 publication Critical patent/WO2006045652A1/fr

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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
    • H01R39/32—Connections of conductor to commutator segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/30—Features relating to electrodes
    • B23K11/3081—Electrodes with a seam contacting part shaped so as to correspond to the shape of the bond area, e.g. for making an annular bond without relative movement in the longitudinal direction of the seam between the electrode holder and the work
    • 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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0214—Resistance welding

Definitions

  • the invention is based on a method and a device for hot pressing
  • a first electrode also called a welding electrode
  • a second electrode also called ground electrode
  • Hook is arranged, put on.
  • the welding current and the resulting heat are conducted via the hook or the welding electrode into the raceway to the ground electrode. This can lead to inadmissible heating up to the destruction in particular of the solder joint in carbon commutators between copper carrier and coal segments as well as damage or fractures of the coal segments by the seated
  • Hot pressing hooks on commutators for electrical machines with the features of claim 1 and 8 has the advantage that both the heating and the risk of damage to the copper or coal segments is reduced by the seated ground electrode.
  • a method for hot pressing hooks on commutators wherein the hooks are arranged on lamellae of the commutator, wherein a first electrode electrically contacts hooks and presses on fins, wherein at least one second electrode in the circumferential direction laterally on the lamella on which Hook is arranged, is placed, and wherein the at least second electrode is placed on the lamellae in the circumferential direction on both sides of the hook.
  • a device for hot pressing hooks on commutators is particularly suitable, wherein the hooks are arranged on lamellae of the commutator, with a first electrode which electrically connects the hooks contacted and pressed against the lamellae, and at least one second electrode laterally in the circumferential direction on the lamella on which the hooks are arranged, for abutment, and wherein the at least second electrode in the circumferential direction acts on the hooks on both sides.
  • the second electrode creates pressure points on both sides of the hooks, a simple visual inspection is possible.
  • locations for mounting an electrode are circumferentially formed on both sides of the hook.
  • locations for mounting an electrode are circumferentially formed on both sides of the hook.
  • such a commutator is a flat commutator, since no space for brushes has to be provided on the circumference here, a flat commutator builds up correspondingly short. This also affects the overall length of an electrical machine in which the commutator is used. Especially in the cramped conditions in a tank of a motor vehicle, which has an advantageous effect, which is why the use in a fuel delivery pump is particularly preferred.
  • a simple construction of the device results when the second electrode has a recess through which the first electrode can be passed.
  • the process reliability is increased by providing in the recess between the first and the second electrode, a gap which is large enough that during the
  • the second electrode is formed on the outer circumference of a disk whose central axis is perpendicular to the longitudinal axis of the commutator, a tool with a simple construction results.
  • the outer circumference of Disc provided a plurality of second electrodes.
  • the recess can be indexed, as a result of which the material does not wear out so much around the recesses. This increases the service life.
  • FIG. 1 shows an electrical machine in a longitudinal section and Figure 2 shows a commutator of the electric machine and a detail of a device for pressing the hooks of the commutator and Figure 3 the figure 2 in another view.
  • an electric machine 10 is shown simplified in a longitudinal section.
  • it is a brush-type DC motor, also called commutator, which is preferably used in a fuel pump of a motor vehicle.
  • commutator also called commutator
  • the electrical machine 10 preferably has only one direction of rotation, which is why it is particularly intended for the already mentioned fan drive. Also due to the low noise, the electric machine 10 is best suited for a fan output.
  • a commutator is arranged on the shaft in the case of a brushed DC motor. in case of a
  • the electric machine 10 comprises a housing, in particular a pole tube 12, and an armature 14 arranged therein.
  • the armature 14 has a shaft 16 and an armature core 18 with an armature winding 20.
  • the armature winding 20 is connected via wires 22 with hooks 32nd ( Figure 2) of a commutator 24 connected.
  • the wires 22 of the armature winding 20 are wrapped around the hooks 22 and hot-pressed with them.
  • the commutator 24 is acted upon by two brushes, not shown, brushes.
  • the brushes are arranged on a brush holder, also not shown, which is made as a plastic injection molded part.
  • the shaft 16 is arranged in two end-side bearings 26 which are in turn secured in two bearing caps 28.
  • magnets 30 are arranged around the armature packet 18 on the inner circumference of the pole tube 12.
  • the hooks 32 are formed on lamellae 36 of the commutator 24.
  • the fins 36 and hooks 32 are typically made of copper.
  • the fins 36 are inclined.
  • the wires 22 of the winding, which are first placed around the hooks 32 when the armature 14 is wound, are not shown for the sake of simplicity.
  • the device 34 comprises a first and a second electrode 38, 40.
  • the first electrode 38 is a welding electrode has the shape of a punch and is displaceable in the radial direction of the clamped commutator 24. On the one hand, it serves to press the hooks 32 against the lamellae 36.
  • the second electrode 40 is a ground electrode disposed on the outer periphery of a disk 42.
  • the dashed center axis 44 of the disk 42 is perpendicular to the central axis 46 of the commutator 24 also shown in dashed lines.
  • the second electrode 40 has a recess 41 through which the first electrode 38 is passed. Between the two electrodes 38, 40, a gap 45 is provided, which is large enough that no voltage flashover occurs during processing.
  • the second electrode 40 has the shape of a fork with two contact points 48. As a result, the second electrode in the circumferential direction of the commutator 24 on both sides of the respective blade 36, on which a hook 32 is arranged, comes to rest.
  • Hook 32 made to the armature winding 20.
  • the advantage of this hot-staking process with the "fork electrode" 40 is that the heat generated by this arrangement can not spread so much in the blades 36 and solder joint of the commutator 24 and thus reduces damage or destruction of the solder joint and blade damage.

Landscapes

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

Abstract

La présente invention concerne un procédé et un dispositif (34) de compression à chaud de crochets (32) sur des commutateurs (24). Les crochets (32) sont disposés sur des lamelles (36) du commutateur (24). Une première électrode (38) vient en contact électrique avec les crochets (32) et les comprime contre les lamelles (36). Au moins une seconde électrode (40) est mise en place dans la direction périphérique, latéralement sur la lamelle (36) sur laquelle se trouve le crochet (32). Selon l'invention, la seconde électrode (40) est mise en place sur les lamelles (36) en direction périphérique sur les deux côtés des crochets (32). Cela présente l'avantage de réduire d'une part l'échauffement et d'autre part le risque d'endommagement des segments de cuivre ou de carbone, par l'électrode (38, 40) mise en place.
PCT/EP2005/054163 2004-10-22 2005-08-24 Procede et dispositif de compression a chaud de crochets sur des commutateurs WO2006045652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004051460.7 2004-10-22
DE200410051460 DE102004051460A1 (de) 2004-10-22 2004-10-22 Verfahren und Vorrichtung zum Heißverpressen von Haken an Kommutatoren

Publications (1)

Publication Number Publication Date
WO2006045652A1 true WO2006045652A1 (fr) 2006-05-04

Family

ID=35311145

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/054163 WO2006045652A1 (fr) 2004-10-22 2005-08-24 Procede et dispositif de compression a chaud de crochets sur des commutateurs

Country Status (2)

Country Link
DE (1) DE102004051460A1 (fr)
WO (1) WO2006045652A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010028782A1 (de) 2010-05-10 2011-11-10 Robert Bosch Gmbh Verbindungsanordnung zwischen einem Draht und einem weiteren Bauteil sowie Verfahren zur Herstellung einer Schweißnahtverbindung zwischen einem Draht und einem Bauteil
DE102012010251A1 (de) 2012-05-25 2013-11-28 Robert Bosch Gmbh Plankommutator und Verfahren zur Montage eines Plankommutators auf eine Welle einer elektrischen Maschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045103A (en) * 1960-10-10 1962-07-17 Warner Samuel Commutator fusing machine
EP0201112A1 (fr) * 1985-05-06 1986-11-12 AXIS SpA Appareil et méthode pour remplacer automatiquement l'électrode d'une machine à soudage pour les rotors des moteurs électriques
EP0325367A2 (fr) * 1988-01-19 1989-07-26 Johnson Electric S.A. Commutateur composé pour un moteur électrique
US4947019A (en) * 1988-12-23 1990-08-07 Nippondenso Co., Ltd Composite electrode for resistance welding
EP0523649A1 (fr) * 1991-07-17 1993-01-20 Junichi Takasaki Armature à commutateur du type disque plan
US5264674A (en) * 1992-03-06 1993-11-23 Joyal Products, Inc. Apparatus and method for fusing wire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045103A (en) * 1960-10-10 1962-07-17 Warner Samuel Commutator fusing machine
EP0201112A1 (fr) * 1985-05-06 1986-11-12 AXIS SpA Appareil et méthode pour remplacer automatiquement l'électrode d'une machine à soudage pour les rotors des moteurs électriques
EP0325367A2 (fr) * 1988-01-19 1989-07-26 Johnson Electric S.A. Commutateur composé pour un moteur électrique
US4947019A (en) * 1988-12-23 1990-08-07 Nippondenso Co., Ltd Composite electrode for resistance welding
EP0523649A1 (fr) * 1991-07-17 1993-01-20 Junichi Takasaki Armature à commutateur du type disque plan
US5264674A (en) * 1992-03-06 1993-11-23 Joyal Products, Inc. Apparatus and method for fusing wire

Also Published As

Publication number Publication date
DE102004051460A1 (de) 2006-04-27

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