FR2727574A1 - Feed brush esp. for electric motor - Google Patents

Feed brush esp. for electric motor Download PDF

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Publication number
FR2727574A1
FR2727574A1 FR9414114A FR9414114A FR2727574A1 FR 2727574 A1 FR2727574 A1 FR 2727574A1 FR 9414114 A FR9414114 A FR 9414114A FR 9414114 A FR9414114 A FR 9414114A FR 2727574 A1 FR2727574 A1 FR 2727574A1
Authority
FR
France
Prior art keywords
brush
pad
electric motor
fixed
vibration absorption
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
FR9414114A
Other languages
French (fr)
Other versions
FR2727574B1 (en
Inventor
Gerard Fournier
Alain Jeusset
Philippe Helaine
Patrice Blais
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.)
Rockwell Body & Chassis Syst
Inteva Products France SAS
Original Assignee
Rockwell Body & Chassis Syst
Rockwell Body and Chassis Systems France
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 Rockwell Body & Chassis Syst, Rockwell Body and Chassis Systems France filed Critical Rockwell Body & Chassis Syst
Priority to FR9414114A priority Critical patent/FR2727574A1/en
Publication of FR2727574A1 publication Critical patent/FR2727574A1/en
Application granted granted Critical
Publication of FR2727574B1 publication Critical patent/FR2727574B1/fr
Granted 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
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/26—Solid sliding contacts, e.g. carbon brush
    • H01R39/27—End caps on carbon brushes to transmit spring pressure

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Abstract

The brush has a thrust element (2) to co-operate with a spring (3) applying a pressure to the brush (1), consisting of a pad (4) of a vibration absorbing material which is fixed to the brush and has a thrust plate (5) for the spring fixed to it. The vibration absorbing pad is made from a silicone-based material, and the pad and brush are fixed together by a matching projection and recess joined by a force fit. The thrust plate has holes to receive fixing studs on the pad, made by over-moulding.

Description

La présente invention concerne un balai d'alimentation notamment pour moteur électrique. The present invention relates to a power brush especially for an electric motor.

On connaît déjà dans l'état de la technique, de nombreux modes de réalisation de balais d'alimentation pour moteur électrique et qui comportent une extrémité adaptée par exemple pour coopérer avec le collecteur de rotor du moteur pour assurer son alimentation et une autre extrémité adaptée pour coopérer avec des moyens élastiques de sollicitation de ce balai en appui contre ce collecteur de rotor. Numerous embodiments of power brushes for an electric motor are already known in the state of the art and which have an end adapted for example to cooperate with the rotor collector of the motor to ensure its supply and another end adapted to cooperate with elastic means for urging this brush to bear against this rotor collector.

Cette extrémité du balai peut en effet comporter des moyens d'appui, tels que par exemple une encoche ou autre, adaptés pour recevoir par exemple une portion correspondante d'un ressort de sollicitation du balai. This end of the brush may indeed comprise support means, such as for example a notch or the like, adapted to receive for example a corresponding portion of a spring for biasing the brush.

Cependant, cette structure présente un certain nombre d'inconvénients notamment au niveau des nuisances sonores engendrées lors du fonctionnement du moteur au niveau de l'interface entre le balai et la portion correspondante des moyens élastiques. However, this structure has a certain number of drawbacks, particularly in terms of the noise nuisance generated during the operation of the motor at the interface between the brush and the corresponding portion of the elastic means.

Le but de l'invention est donc de résoudre ces problèmes. The object of the invention is therefore to solve these problems.

A cet effet, l'invention a pour objet un balai d'alimentation notamment pour moteur électrique, du type comportant des moyens d'appui adaptés pour coopérer avec des moyens élastiques de sollicitation de ce balai, caractérisé en ce que les moyens d'appui comprennent un tampon de matériau d'absorption de vibrations, fixé sur le balai et sur lequel est fixée une plaque d'appui pour les moyens élastiques. To this end, the subject of the invention is a supply brush, in particular for an electric motor, of the type comprising support means adapted to cooperate with elastic means for biasing this brush, characterized in that the support means comprise a pad of vibration absorption material, fixed on the brush and on which is fixed a support plate for the elastic means.

Avantageusement, le tampon de matériau d'absorption de vibrations est à base de silicone. Advantageously, the pad of vibration absorption material is based on silicone.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels
- la Fig.1 représente une vue de côté d'un balai d'alimentation selon l'invention; et
- la Fig.2 représente une vue de dessus d'un balai d'alimentation selon l'invention.The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the accompanying drawings, in which
- Fig.1 shows a side view of a supply brush according to the invention; and
- Fig.2 shows a top view of a supply brush according to the invention.

On reconnaît en effet sur ces figures un balai d'alimentation de moteur électrique, désigné par la référence générale 1. We recognize in these figures an electric motor supply brush, designated by the general reference 1.

Ce balai comporte par exemple à l'une de ses extrémités, des moyens d'appui 2 adaptés pour coopérer avec des moyens élastiques de sollicitation de ce balai, une partie de ces moyens élastiques étant représentée sur la figure 1 et étant désignée par la référence générale 3. This brush includes for example at one of its ends, support means 2 adapted to cooperate with elastic means for biasing this brush, part of these elastic means being shown in Figure 1 and being designated by the reference general 3.

Selon l'invention, les moyens d'appui 2 comprennent un tampon de matériau d'absorption de vibrations désigné par la référence générale 4, par exemple à base de silicone, fixé sur le reste du balai 1 et sur lequel est fixée une plaque d'appui 5 de section en forme générale de
V adaptée pour coopérer avec les moyens de sollicitation 3.According to the invention, the support means 2 comprise a pad of vibration absorption material designated by the general reference 4, for example based on silicone, fixed on the rest of the brush 1 and on which is fixed a plate d 5 section support in general form
V adapted to cooperate with the biasing means 3.

Dans l'exemple de réalisation représenté sur ces figures, le tampon de matériau d'absorption de vibrations 4 et le balai 1 comportent des parties en saillie et en creux complémentaires désignées par les références respectives 4a et la sur la figure 2, qui sont emmanchées à force l'une dans l'autre pour assurer la fixation du tampon 4 sur le reste du balai. In the embodiment shown in these figures, the pad of vibration absorption material 4 and the brush 1 have complementary projecting and recessed portions designated by the respective references 4a and 1a in FIG. 2, which are fitted force one into the other to secure the pad 4 on the rest of the brush.

Par ailleurs, la plaque d'appui 5 peut également comporter un certain nombre de trous, par exemple 5a, de passage de tétons de fixation de celle-ci sur le tampon 4, venus de matière avec ce tampon, lors de son surmoulage sur la plaque. Furthermore, the support plate 5 may also include a certain number of holes, for example 5a, for the passage of pins for fixing the latter on the pad 4, made integrally with this pad, during its overmolding on the plate.

Il va de soi bien entendu que d'autres modes de fixation, comme par exemple par collage, peuvent être utilisés pour assurer la fixation de la plaque d'appui sur le tampon et du tampon sur le reste du balai.  It goes without saying of course that other methods of attachment, such as by gluing, can be used to secure the support plate on the pad and the pad on the rest of the brush.

On conçoit alors que le balai d'alimentation selon l'invention présente un certain nombre d'avantages dans la mesure où les vibrations entre le balai et les moyens élastiques de sollicitation de celui-ci sont absorbées par ce tampon, ce qui permet de réduire de façon importante les bruits de fonctionnement engendrés à ce niveau du moteur.  It will therefore be understood that the supply brush according to the invention has a certain number of advantages insofar as the vibrations between the brush and the elastic means of biasing of the latter are absorbed by this buffer, which makes it possible to reduce significantly the operating noise generated at this level of the engine.

Claims (4)

REVENDICATIONS 1. Balai d'alimentation notamment pour moteur électrique, du type comportant des moyens d'appui (2) adaptés pour coopérer avec des moyens élastiques (3) de sollicitation de ce balai, caractérisé en ce que les moyens d'appui comprennent un tampon (4) de matériau d'absorption de vibrations, fixé sur le balai (1) et sur lequel est fixée une plaque d'appui (5) pour les moyens élastiques (3). 1. Supply brush, in particular for an electric motor, of the type comprising support means (2) adapted to cooperate with elastic means (3) for biasing this brush, characterized in that the support means comprise a buffer (4) of vibration absorption material, fixed on the brush (1) and on which is fixed a support plate (5) for the elastic means (3). 2. Balai selon la revendication 1, caractérisé en ce que le tampon de matériau d'absorption de vibrations (4) est à base de silicone. 2. A brush according to claim 1, characterized in that the pad of vibration absorption material (4) is based on silicone. 3. Balai selon la revendication 1 ou 2, caractérisé en ce que le tampon de matériau d'absorption de vibrations (4) et le balai (1) comportent des parties en saillie et en creux complémentaires (4a, la) emmanchées à force l'une dans l'autre pour assurer la fixation du tampon (4) sur le balai (1). 3. A brush according to claim 1 or 2, characterized in that the pad of vibration absorption material (4) and the brush (1) have complementary projecting and hollow parts (4a, la) force-fitted. 'one in the other to secure the pad (4) on the brush (1). 4. Balai selon l'une quelconque des revendications précédentes, caractérisé en ce que la plaque d'appui (5) comporte des trous de passage (5a) de tétons de fixation de celle-ci sur le tampon (4), venus de matière avec celui-ci lors de son surmoulage sur la plaque.  4. Broom according to any one of the preceding claims, characterized in that the support plate (5) has through holes (5a) of pins for fixing the latter on the pad (4), made of material with it during its overmolding on the plate.
FR9414114A 1994-11-24 1994-11-24 Feed brush esp. for electric motor Granted FR2727574A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9414114A FR2727574A1 (en) 1994-11-24 1994-11-24 Feed brush esp. for electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9414114A FR2727574A1 (en) 1994-11-24 1994-11-24 Feed brush esp. for electric motor

Publications (2)

Publication Number Publication Date
FR2727574A1 true FR2727574A1 (en) 1996-05-31
FR2727574B1 FR2727574B1 (en) 1997-02-14

Family

ID=9469127

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9414114A Granted FR2727574A1 (en) 1994-11-24 1994-11-24 Feed brush esp. for electric motor

Country Status (1)

Country Link
FR (1) FR2727574A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1648087U (en) * 1952-10-16 1952-12-18 Schunk & Ebe Gmbh FITTING CARBON BRUSHES FOR ELECTRIC MACHINERY.
DE1811319A1 (en) * 1968-11-28 1970-06-18 Ringsdorff Werke Gmbh Spring-loaded head piece for carbon brushes
DE2813422A1 (en) * 1978-03-29 1979-10-04 Ringsdorff Werke Gmbh Electrical contact brush assembly - with contact piece sepd. by damping element from flex-less brush body
FR2437711A1 (en) * 1978-09-26 1980-04-25 Lorraine Carbone Pressure pad for double brushes - obviates lateral forces from collector spring produced by non-axial effects
DE9013569U1 (en) * 1990-09-27 1991-01-10 Schunk Kohlenstofftechnik GmbH, 6301 Heuchelheim Electric motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1648087U (en) * 1952-10-16 1952-12-18 Schunk & Ebe Gmbh FITTING CARBON BRUSHES FOR ELECTRIC MACHINERY.
DE1811319A1 (en) * 1968-11-28 1970-06-18 Ringsdorff Werke Gmbh Spring-loaded head piece for carbon brushes
DE2813422A1 (en) * 1978-03-29 1979-10-04 Ringsdorff Werke Gmbh Electrical contact brush assembly - with contact piece sepd. by damping element from flex-less brush body
FR2437711A1 (en) * 1978-09-26 1980-04-25 Lorraine Carbone Pressure pad for double brushes - obviates lateral forces from collector spring produced by non-axial effects
DE9013569U1 (en) * 1990-09-27 1991-01-10 Schunk Kohlenstofftechnik GmbH, 6301 Heuchelheim Electric motor

Also Published As

Publication number Publication date
FR2727574B1 (en) 1997-02-14

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