EP1344287B1 - Dispositif de fixation pour balai - Google Patents

Dispositif de fixation pour balai Download PDF

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Publication number
EP1344287B1
EP1344287B1 EP01994801A EP01994801A EP1344287B1 EP 1344287 B1 EP1344287 B1 EP 1344287B1 EP 01994801 A EP01994801 A EP 01994801A EP 01994801 A EP01994801 A EP 01994801A EP 1344287 B1 EP1344287 B1 EP 1344287B1
Authority
EP
European Patent Office
Prior art keywords
carbon brush
holding
holding device
carrier portion
portions
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.)
Expired - Lifetime
Application number
EP01994801A
Other languages
German (de)
English (en)
Other versions
EP1344287A1 (fr
Inventor
Wolfgang KÄSDORF
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.)
K-Tec GmbH
K TEC GmbH
Original Assignee
K-Tec GmbH
K TEC 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 K-Tec GmbH, K TEC GmbH filed Critical K-Tec GmbH
Publication of EP1344287A1 publication Critical patent/EP1344287A1/fr
Application granted granted Critical
Publication of EP1344287B1 publication Critical patent/EP1344287B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R39/38—Brush holders
    • H01R39/39—Brush holders wherein the brush is fixedly mounted in the holder
    • 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
    • H01R39/38—Brush holders
    • H01R39/381—Brush holders characterised by the application of pressure to brush

Definitions

  • the invention relates to a holder for a, in particular on a commutator or a slip ring engageable with a face, carbon brush, comprising a bent spring element with an optionally U- or L-shaped bent holding portion and a carbon brush receiving support portion, a back side Surface of the carbon brush surface supporting support surface and along side surfaces, in particular two opposite side surfaces or edges of the carbon brush extending holding portions, which are free cut from the support portion of the holder and bent out of the support portion plane portions.
  • a corresponding holder is the US 4,157,483 refer to.
  • the carbon brush to be fixed on a carrier section of a holder has a tongue-shaped projection on the rear side, which passes through a cutout cut free in the carrier section and is fixed by means of holding sections which are bent out of the plane spanned by the carrier section.
  • An appropriate solution is also the US 4,431,933 refer to.
  • a holder which consists of an L-shaped spring element, one leg of which has a U-shaped bulge, in which a carbon brush can be fixed.
  • the support portion has an opening which is penetrated by a carbon brush to fix it by insulation displacement. Since the carbon brush extends in sections along the back of the support section, a minimum installation depth is required, which can lead to considerable problems especially for small engines. The insulation displacement also results in a notch effect, which can lead to problems with vibrations. Since the rear portion of the carbon brushes passing through the support portion often has a smaller cross-section than the portion facing a commutator, on which the carbon brush rests for power transmission, it is necessary due to the production that the carbon brush material is pressed in the longitudinal direction of the carbon brush to be produced.
  • An electric motor for small appliances after the DE 24 13 578 A1 has brackets designed as leaf springs for carbon brushes, each having a prismatic extension which is fixable by notch effect in a section of the leaf spring.
  • the present invention is based on the problem, a holder of the type mentioned in such a way that a secure fixing of the carbon brush while avoiding a notch effect is possible, the installation space to be minimized. Also, an optimal use of the carbon brush should be possible.
  • the problem is solved by a holder with a carbon brush characterized in that the carbon brush rests with its rear side surface on the cut-free from the support section supporting surface.
  • the problem is solved in that the support surface for the planar support of the back surface of the carbon brush is a cut-free surface of the support portion.
  • the carbon brush is supported flat on the support section itself, so that the carbon brush does not extend beyond the rear side of the support section. Consequently, the installation depth depends solely on the effective length of the carbon brush interacting with a commutator or slip ring. Furthermore, the carbon brush can be fixed without an insulation displacement connection, so that, in particular, vibrations which have an adverse effect are prevented.
  • the holding section further extends in the plane of the support section, so that an increase in the installation depth does not take place. At the same time a high stability is given.
  • a particularly secure fixation without the risk of uncontrolled slipping of the carbon brush is given when extend along each side surface of the carbon brush two holding sections as flags.
  • the carbon brush can be fixed by clamping over the holding sections.
  • the carbon brush itself may be a block carbon brush or a hammer carbon brush.
  • a small motor 10 with motor housing 12 and arranged in this electric motor with commutator 14 is shown purely in principle, on which for power transmission carbon brushes 16, 18 abut force.
  • the carbon brushes 16 and 18 respectively depart from a holder 20, drawn purely in principle in connection with the carbon brush 16, in the form of a leaf spring known in terms of function, which comprises a holding leg or holding portion 22 and a carrier portion 24 receiving the carbon brush 16.
  • the holding portion 22 is fixed in a known manner between bearings and abutments 26, 28 and 30.
  • the holding portion 22 on a section U-shaped bent portion 32 which surrounds the bearing 28, whereas the adjacent portions lie flat against the abutments 26 and 30.
  • the holder 20 undergoes a unique fixation, wherein due to the bias of the support portion 24 relative to the holding portion 22, the emanating from the support portion 24 carbon brush 16 undergoes the required application of force in the direction of the commutator 14.
  • the carbon brush 16 lies with its rear surface 34, which is opposite to the end face 36 abutting the commutator 14, flat on the side facing the commutator 38 of the support portion 24 and is over cut from the support portion 24 and its plane spanning a surface and outwardly bent tabs or lugs 42, 44 fixed, wherein at least in each case a tab or a flag 42, 44 along a side surface 46, 48, 50 of the carbon brush 16 extends.
  • the carbon brush 16 is kept out to the required extent and optionally fixed by clamping, without there being an associated with a notch cutting insulation, as is the case in the prior art.
  • 1 to 4 is a further, however, from the basic structure of the holder 20 corresponding preferred embodiment of a holder 52 can be seen, which consists of a support portion 54 and a U-shaped bent holding portion 56, wherein the free leg 58 is a U-shaped has curved, outwardly divergent leg having portion 59 which surrounds a bearing corresponding to the bearing 28 of FIG. 5 for fixing the carbon brush holder 52.
  • the support portion 54 has a free-cutting surface 60, on which a carbon brush such as the FIGS. 3 and 4 to be removed carbon brush 62, rests flat with its back surface.
  • a carbon brush such as the FIGS. 3 and 4 to be removed carbon brush 62
  • holding sections 64, 66, 68, 70, 72, 74 are cut free and bent out of the plane spanned by the surface 60 to extend at fixed carbon brush 62 along the side outer surfaces 76, 78, 80, 82 and optionally to hold the carbon brush 62 clamped.
  • the clamp fixing is not a mandatory feature, since the flat holding portions or lugs 64, 66, 68, 70, 72, 74 in the true sense alone must provide an axial guide for the carbon brush 62, the force due to the spring action of the support portion 54 on a commutator is applied. Consequently, with properly placed carbon brush 62 alone a guide in the axial direction is necessary without an additional terminals is necessary.
  • the carbon brush 62 rests flat on the plane spanned by the support portion 54, namely the support surface 60, on the one hand, even with vibrations occurring a proper concern of the carbon brush 62 is ensured to a commutator. In addition, since the carbon brush 62 does not penetrate the support section 54, it requires a small installation depth.
  • cut out of the support portion 54 and bent out of the plane portions or flags can also be such that at least some lines abut for example diagonally opposite edges 84, 90 and 86, 88 of the carbon brush 62.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (10)

  1. Dispositif de fixation (20, 52) avec un balai de charbon (16, 18, 62), en particulier un balai pouvant être mis en contact avec un commutateur (14) ou une bague collectrice avec une face frontale, comprenant un élément élastique courbé avec une section de fixation (56) courbée présentant le cas échéant une forme en U ou en L et une section portante (24, 54) logeant le balai de charbon, laquelle présente une surface d'appui (60) soutenant à plat la surface arrière du balai de charbon (34), ainsi que des sections de fixation (42, 44, 64, 66, 68, 70, 72, 74) s'étendant le long des surfaces latérales (46, 48, 50), en particulier de deux surfaces latérales opposées, ou de bords (86, 88, 90) du balai de charbon, lesquelles sections de fixation sont des sections découpées dans la section portante et ressortant de manière courbée du plan formé par la section portante,
    caractérisé en ce
    que le balai de charbon (16, 18, 62) s'appuie avec sa surface arrière à plat sur la surface d'appui (60) découpée dans la section portante (24, 54).
  2. Dispositif de fixation selon la revendication 1,
    caractérisé en ce
    qu'au moins une section de fixation (42, 44, 64, 66, 68, 70, 72, 74) dépassant de la section portante (24, 54) du dispositif de fixation (20, 52) s'étend le long de chaque surface latérale (46, 48, 50, 76, 78, 80, 82) du balai de charbon (16, 62).
  3. Dispositif de fixation selon la revendication 1,
    caractérisé en ce
    que s'étendent respectivement deux sections de fixation (68, 70 ; 72, 74) le long des petits côtés (80, 82) du balai de charbon (62) et respectivement une section de fixation (64, 66) le long des grands côtés (76, 78).
  4. Dispositif de fixation selon au moins la revendication 1,
    caractérisé en ce
    qu'au moins une section de fixation (68, 70, 72, 74) s'étend le long de chaque bord (86, 88, 90) du balai de charbon (62).
  5. Dispositif de fixation selon au moins une des revendications précédentes,
    caractérisé en ce
    que les sections de fixation (64, 66, 68, 70, 72, 74) maintiennent le balai de charbon (62) par serrage.
  6. Dispositif de fixation selon au moins une des revendications précédentes,
    caractérisé en ce
    que le balai de charbon est un balai à bloc ou un balai à marteau.
  7. Dispositif de fixation selon au moins une des revendications précédentes,
    caractérisé en ce
    que le balai de charbon est pressé verticalement par rapport à son axe longitudinal.
  8. Dispositif de fixation selon au moins une des revendications précédentes,
    caractérisé en ce
    que le balai de charbon est pressé parallèlement à son axe longitudinal.
  9. Dispositif de fixation (20, 52) pour un balai de charbon (16, 18, 62) pouvant en particulier être mis en contact avec un commutateur (14) ou une bague collectrice avec une face frontale, comprenant un élément élastique courbé avec une section de fixation (56) courbée présentant le cas échéant une forme en U ou en L et une section portante (24, 54) logeant le balai de charbon, laquelle présente une surface d'appui (60) soutenant à plat la surface arrière du balai de charbon (34), ainsi que des sections de fixation (42, 44, 64, 66, 68, 70, 72, 74) s'étendant le long des surfaces latérales (46, 48, 50), en particulier de deux surfaces latérales opposées, ou de bords (86, 88, 90) du balai de charbon, lesquelles sections de fixation sont des sections découpées dans la section portante et ressortant de manière courbée du plan formé par la section portante,
    caractérisé en ce
    que le surface portante (60) permettant l'appui à plat de la surface arrière du balai de charbon (16, 18, 62) est une surface découpée dans la section portante (24, 54).
  10. Dispositif de fixation selon la revendication 9,
    caractérisé en ce
    que les sections de fixation (42, 44, 64, 66, 68, 70, 72, 74) s'étendent le long des côtés d'un rectangle, sachant que respectivement deux sections de fixation (68, 70 ; 72, 74) s'étendent le long du côté le plus court et respectivement une partie de fixation (64, 66) le long du côté le plus long du rectangle.
EP01994801A 2000-12-19 2001-12-18 Dispositif de fixation pour balai Expired - Lifetime EP1344287B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10063405 2000-12-19
DE10063405A DE10063405C2 (de) 2000-12-19 2000-12-19 Halterung für eine Kohlebürste
PCT/EP2001/014932 WO2002050963A1 (fr) 2000-12-19 2001-12-18 Dispositif de fixation pour balai

Publications (2)

Publication Number Publication Date
EP1344287A1 EP1344287A1 (fr) 2003-09-17
EP1344287B1 true EP1344287B1 (fr) 2008-02-06

Family

ID=7667866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01994801A Expired - Lifetime EP1344287B1 (fr) 2000-12-19 2001-12-18 Dispositif de fixation pour balai

Country Status (6)

Country Link
US (1) US6870297B1 (fr)
EP (1) EP1344287B1 (fr)
AT (1) ATE385620T1 (fr)
AU (1) AU2002224944A1 (fr)
DE (2) DE10063405C2 (fr)
WO (1) WO2002050963A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10207406A1 (de) * 2002-02-21 2003-09-11 K Tec Gmbh Halterung für eine Kohlebürste
DE10251368A1 (de) * 2002-11-05 2004-05-13 Valeo Motoren Und Aktuatoren Gmbh Bürstenhalteanordnung für eine Kohlebürste einer Elektromaschine, insbesondere eines Elektromotors, sowie Elektromaschine mit einer derartigen Bürstenhalteanordnung
DE10256831A1 (de) 2002-12-04 2004-06-24 Siemens Ag Trägerteil für Kommutatorbürsten eines Elektromotors
DE10342222A1 (de) 2003-09-11 2005-05-04 K Tec Kunststoffverarbeitung G Topf- oder becherförmiger Träger
DE10342221B4 (de) * 2003-09-11 2008-05-08 K-Tec Kunststoffverarbeitung Gmbh Anordnung zur elektrischen Versorgung eines Motors
DE102004029534A1 (de) * 2004-06-18 2006-01-05 Robert Bosch Gmbh Hammerbürste für eine elektrische Maschine
DE102004041490A1 (de) * 2004-08-27 2006-03-02 Robert Bosch Gmbh Schleifkörperhalter
EP2112751B1 (fr) * 2007-02-06 2015-09-09 Mabuchi Motor Co., Ltd Dispositif de balai pour moteur
CN117060633B (zh) * 2023-10-11 2024-01-02 常州惠勒电机有限公司 一种直流电机、使用该电机的滚珠丝杠及工作方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413578A1 (de) * 1974-03-21 1975-10-02 Bosch Siemens Hausgeraete Elektromotorisch betriebenes kleingeraet, insbesondere haushalts-kaffeemuehle o.dgl.
US4431933A (en) * 1978-10-09 1984-02-14 Takaichi Mabuchi Brush holding device
JPS5930653U (ja) * 1982-08-20 1984-02-25 マブチモ−タ−株式会社 小型モ−タのブラシ装置
US4638203A (en) * 1985-06-21 1987-01-20 Matsushita Electric Industrial Co., Ltd. Attachment structure for brush holder springs
US4746829A (en) * 1986-07-30 1988-05-24 Johnson Electric Industry Manufactory, Limited Brush gear assembly
DE4040002A1 (de) * 1990-12-14 1992-06-17 Bosch Gmbh Robert Aggregat zum foerdern eines als elektrolyt wirkenden mediums, insbesondere kraftstoff
US6339272B1 (en) * 1998-12-24 2002-01-15 Asmo Co., Ltd. Washer pump and motor brush support structure
GB9905247D0 (en) * 1999-03-09 1999-04-28 Johnson Electric Sa Small electric motor

Also Published As

Publication number Publication date
ATE385620T1 (de) 2008-02-15
EP1344287A1 (fr) 2003-09-17
US6870297B1 (en) 2005-03-22
DE10063405C2 (de) 2003-01-23
DE10063405A1 (de) 2002-07-04
AU2002224944A1 (en) 2002-07-01
DE50113569D1 (de) 2008-03-20
WO2002050963A1 (fr) 2002-06-27

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