EP1610425B1 - Ressort de balais pour collecteur de courant à bague collectrice - Google Patents

Ressort de balais pour collecteur de courant à bague collectrice Download PDF

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Publication number
EP1610425B1
EP1610425B1 EP04020357A EP04020357A EP1610425B1 EP 1610425 B1 EP1610425 B1 EP 1610425B1 EP 04020357 A EP04020357 A EP 04020357A EP 04020357 A EP04020357 A EP 04020357A EP 1610425 B1 EP1610425 B1 EP 1610425B1
Authority
EP
European Patent Office
Prior art keywords
section
clamping
region
brush spring
contact
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.)
Active
Application number
EP04020357A
Other languages
German (de)
English (en)
Other versions
EP1610425A1 (fr
Inventor
Klaus Dipl.-Ing. Barthelt
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.)
Stemmann Technik GmbH
Original Assignee
Stemmann Technik 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 Stemmann Technik GmbH filed Critical Stemmann Technik GmbH
Priority to EP04020357A priority Critical patent/EP1610425B1/fr
Publication of EP1610425A1 publication Critical patent/EP1610425A1/fr
Application granted granted Critical
Publication of EP1610425B1 publication Critical patent/EP1610425B1/fr
Active 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
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
    • 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

Definitions

  • the invention relates to a brush spring for a slip ring transmitter according to the features in the preamble of claim 1.
  • Such a brush spring is one of the prior art by DE 101 58 381 A1. It has a straight extending wire-like contact shaft, which may consist of a copper-beryllium alloy. On the free end of the contact shaft a sleeve of gold is pushed and fixed by crimping. The sleeve facing away from the end of the contact shaft is in a helical spring coil over. At this spring coil is followed by a parallel to the contact shaft extending straight length portion, which merges into an S-shaped bent clamping portion. The free end of the clamping portion points in a direction away from the contact shaft direction.
  • the sleeve can be fixed only after the fixation of the brush spring on the board end side of the contact shaft.
  • the invention is - starting from the prior art - the object of the invention to provide a brush spring for a slip ring, which is not only simpler, but also requires less M ontageaufwand.
  • the essence of the invention is the fact that the contact stem merges over a rectangular step in the clamping section extending in a bending plane with the step.
  • This not only has the advantage that in a circuit board of a stator of a Schleifringübertragers only one recess must be provided, through which the entire clamping portion can be inserted to plant the gradation on the board, but that the contact shaft of the brush spring already before their fixation can be provided on the board with the end-side contact area of a noble metal, in particular gold, which then comes to a slip ring of the rotor part of Schleifringübertragers to the plant.
  • This makes it possible to pre-assemble brush springs in the assembly line process.
  • the assembly a Schleifringschreibtragers is simplified and made cheaper economically.
  • the gradation between the contact shaft and the clamping portion forms according to the embodiment of claim 2 is a part of the two mutually facing U-shaped longitudinal portions having clamping portion of a bracket.
  • This bracket is pushed during assembly through the recess in the board, wherein it is compressed due to its resilient character in the bending plane. If the gradation reaches the underside of the board, the stirrup can spread again, so that the U-shaped longitudinal sections surround the edge regions of the recess, whereby the brush spring is fixed in position.
  • the bracket on a trapezoidal contour. This allows the bracket to be easily pushed through the recess.
  • the support region of the clamping portion is formed by two aligned legs of the U-shaped longitudinal sections. The opposite legs of the U-shaped longitudinal sections engage under the board.
  • the clamping portion For mounting the brush spring on the board, it is only necessary to push the clamping portion under springy compression in the bending plane through the recess. If the abutment area has passed through the recess, the clamping section can relax again, so that then the gradation rests against the side of the board facing the rotor part and the clamping section is fixed over the support area and the clamping area.
  • the brush spring may be formed from a cross-sectionally round spring wire section.
  • the spring wire section has a rectangular cross section, wherein its thickness measured in the bending plane is smaller than the width measured transversely thereto. As a result, sufficient stability is ensured with good resilient properties.
  • a preferred embodiment of the spring wire section is seen in the features of claim 6. Thereafter, the width to thickness ratio is approximately 3.5: 1.
  • the contact region is formed by a U-shaped shell, which is welded to the contact shaft via the inner sides of its legs.
  • the laser welding is used.
  • the cup-shaped contact region consists of a spring-hard gold alloy.
  • the manufacturing cost of providing less noble material for the contact area is made even more economical that is formed according to the features of claim 10, the contact area by a welded to the contact shaft gold wire.
  • the definition of the gold wire on a flat side of the contact shaft is preferably carried out by resistance welding.
  • the contact shaft consists of a copper-nickel alloy.
  • the contact shaft may consist of stainless 1.4310.
  • reference numeral 1 denotes a slip ring transmitter illustrated in the diagram with a circuit board 2 of a stator part, not otherwise illustrated, and with a rotor part 3 for the transmission of electrical currents and data.
  • each brush spring 6 has a straight extending contact shaft 7 made of a copper-nickel alloy. At the free end 8 of the contact shaft 7 there is a contact region 9 which cooperates with a slip ring on the rotor part 3.
  • the contact portion 9 is characterized by a sleeve Gold formed, for example, is determined by crimping on the end 8 of the contact shaft 7.
  • the contact region can also be formed by a U-shaped shell 9a, which is connected via the inner sides 10 of its legs 11 to the contact shaft 7 by laser welding 12.
  • This shell 9a then only needs to lie on the side of the contact shaft 7, where it comes into contact with the slip ring of the rotor part 3. It preferably consists of a spring-hard gold alloy.
  • the contact shaft 7 is provided with a rectangular step 13 at a distance from the contact region 9.
  • the clamping portion 14 has a support area 15 and a clamping area 16.
  • the support area 15 is formed by an arcuate curvature of one end of a subsequent to the gradation 13 U-shaped bracket 17.
  • the support region 15 passes over an S-shaped compensating region 18 into the L-shaped clamping region 16.
  • This clamping region 16 has an abutment limb 19 and an end-side clamping limb 20 angled away from it.
  • the clamping limb 20 is deflected towards the abutment limb 19 at an angle which is ⁇ 90 °.
  • a brush spring 6 provided in advance with the contact region 9 or 9a is pushed with the complete clamping section 14 from the side 4 of the board 2 facing the rotor part 3 through an oval recess 21 in the board 2 (FIGS. 1 and 2), wherein the clamping portion 14 in the bending plane EE of the gradation 13, the clamping portion 16 and the support portion 15 is compressed.
  • the clamping portion 14 can expand again, so that then the support portion 15 on the side facing away from the rotor part 3 of the 5 Board 2 is located and the clamping leg 20, the board 2 engages under the recess 21 from her.
  • FIG. 3 shows, in the arrangement of a plurality of brush springs 6 side by side correspondingly larger recesses 21 a in the board 2 are provided.
  • the mutually opposite areas of the recess 21 a are provided with adapted to the contour of the wire of the clamping portion 14 of the brush springs 6 grooves 22.
  • Both the rounded end faces of the recess 21 and the grooves 22 of the recess 21 a are coated with an electrically conductive material which is in communication with the conductor tracks on the board 2.
  • a board 2a is provided with cutouts 21b. Otherwise, the board 2a corresponds to the already described board 2 according to FIG. 1.
  • the brush spring 6a consists of a spring wire section with a rectangular cross section ( Figure 7).
  • the thickness D measured in the bending plane E-E according to FIG. 7 is smaller than the width B measured transversely thereto.
  • the ratio of the width B to the thickness D of the brush spring 6a is approximately 3.5: 1.
  • the contact region 9b at the end of the straight extending contact shaft 7 is formed by a short gold wire, which is fixed by resistance welding on the rotor part 3 facing flat side 23 of the contact shaft 7.
  • a clamping portion 14a This comprises a U-shaped longitudinal section 24.
  • a trapezoidally curved bracket 17a connects, which in turn merges into a U-shaped longitudinal section 25.
  • the support area 15a is aligned by two aligned Leg 26 of the U-shaped longitudinal portions 24, 25 are formed, which lie on the side facing away from the rotor part 3 5 of the board 2a, whereas the clamping portion 16a is formed by the U-shaped longitudinal portions 24, 25.
  • edges 29 of the recess 21b may be provided with grooves, as illustrated in Figure 3 for the round in cross-section brush spring 6.
  • the grooves then have a cross section adapted to the cross section of the brush springs 6a.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Brushes (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Claims (12)

  1. Ressort de balais pour collecteur de courant à bague collectrice (1), composé d'une partie en fil d'acier pour ressort (7, 14 ; 7, 14a) qui comporte une tige de contact (7) qui s'étend en ligne droite, avec à son extrémité une zone de contact (9, 9a, 9b) composée d'un matériau plus précieux que celui de la tige de contact (7), une partie de serrage (14, 14a) pliée plusieurs fois et divisée en une zone de support (15, 15a) et en une zone de serrage (16, 16a) contiguë à l'extrémité de la tige de contact (7) écartée de la zone de contact (9, 9a, 9b), caractérisé en ce que la tige de contact (7) devient, sur un épaulement orthogonal (13, 13a), la partie de serrage (14, 14a) qui s'étend dans le même plan de courbure (E-E) que l'épaulement (13, 13a).
  2. Ressort de balais selon la revendication 1, caractérisé en ce que l'épaulement (13a) forme un élément de la partie de serrage (14a) d'un étrier (17a) qui comporte deux parties longitudinales en forme de U (24, 25) tournées l'une vers l'autre.
  3. Ressort de balais selon la revendication 2, caractérisé en ce que l'étrier (17a) comporte un contour trapézoïdal, la zone d'appui (15a) étant formée par deux branches (26) alignées des parties longitudinales en forme de U (24, 25).
  4. Ressort de balais selon la revendication 1, caractérisé en ce que la zone d'appui (15) de la partie de serrage (14) est formée par une courbure en forme d'arc d'une extrémité d'un étrier en forme de U (17) contigu à l'épaulement (13), la zone d'appui (15) devenant, via une zone de compensation courbée en forme de S (18), la zone de serrage (16) configurée en forme de L qui comporte à son extrémité une branche de serrage (20) coudée dans le sens inverse par rapport à l'épaulement (13).
  5. Ressort à balais selon une des revendications 1 à 4, caractérisé en ce que la partie en fil d'acier pour ressort (7, 14a) comporte une section transversale rectangulaire, son épaisseur (D) mesurée dans le plan de courbure (E-E) étant inférieure à la largeur (B) mesurée perpendiculairement.
  6. Ressort à balais selon la revendication 5, caractérisé en ce que le rapport de la largeur (B) sur l'épaisseur (D) de la partie en fil d'acier pour ressort (7, 14a) est dimensionné à environ 3,5 :1.
  7. Ressort à balais selon une des revendications 1 à 6, caractérisé en ce que la zone de contact (9) est formée par une douille serrée sur la tige de contact (7).
  8. Ressort à balais selon une des revendications 1 à 6, caractérisé en ce que la zone de contact (9a) est formée d'une coquille en forme de U qui est soudée à la tige de contact (7) via les faces intérieures (10) de ses branches (11).
  9. Ressort à balais selon une des revendications 1 à 8, caractérisé en ce que la zone de contact (9a) est composée d'un alliage d'or écroui.
  10. Ressort à balais selon une des revendications 1 à 6, caractérisé en ce que la zone de contact (9b) est formée par un fil en or soudé à la tige de contact (7).
  11. Ressort à balais selon une des revendications 1 à 10, caractérisé en ce que la tige de contact (7) est composée d'un alliage cuivre-nickel.
  12. Ressort à balais selon une des revendications 1 à 10, caractérisé en ce que la tige de contact (7) est en Niro 1.4310.
EP04020357A 2004-06-17 2004-08-27 Ressort de balais pour collecteur de courant à bague collectrice Active EP1610425B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04020357A EP1610425B1 (fr) 2004-06-17 2004-08-27 Ressort de balais pour collecteur de courant à bague collectrice

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04014161A EP1610424A1 (fr) 2004-06-17 2004-06-17 Ressort de balais pour collecteur de courant à bague collectrice
EP04014161 2004-06-17
EP04020357A EP1610425B1 (fr) 2004-06-17 2004-08-27 Ressort de balais pour collecteur de courant à bague collectrice

Publications (2)

Publication Number Publication Date
EP1610425A1 EP1610425A1 (fr) 2005-12-28
EP1610425B1 true EP1610425B1 (fr) 2006-10-11

Family

ID=34925378

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04014161A Withdrawn EP1610424A1 (fr) 2004-06-17 2004-06-17 Ressort de balais pour collecteur de courant à bague collectrice
EP04020357A Active EP1610425B1 (fr) 2004-06-17 2004-08-27 Ressort de balais pour collecteur de courant à bague collectrice

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04014161A Withdrawn EP1610424A1 (fr) 2004-06-17 2004-06-17 Ressort de balais pour collecteur de courant à bague collectrice

Country Status (5)

Country Link
EP (2) EP1610424A1 (fr)
AT (1) ATE342592T1 (fr)
DE (1) DE502004001732D1 (fr)
DK (1) DK1610425T3 (fr)
ES (1) ES2273134T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006002104A1 (de) * 2006-01-17 2007-07-19 Ltn Servotechnik Gmbh Schleifringbürste und damit ausgestattete Schleifringeinheit
DE102012204830A1 (de) 2012-03-26 2013-09-26 Schleifring Und Apparatebau Gmbh Bürstenblock für eine Schleifringanordnung
DE102013212723A1 (de) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Elektrische Maschine mit einem Kommutator
CN104821474B (zh) * 2015-04-30 2017-06-27 中航光电科技股份有限公司 一种电旋转连接器
DE102015222200B3 (de) * 2015-11-11 2017-05-04 Schunk Gerhard Carbon Technology GmbH Schleifkontakt
CN106848793B (zh) * 2016-12-30 2023-07-25 摩腾科技（上海）有限公司 带有弹性导电装置变桨滑环电刷
EP3454435B1 (fr) * 2017-09-06 2019-09-04 Schleifring GmbH Brosse à fils d'or stabilisée pour bagues collectrices
PL233136B1 (pl) * 2017-10-19 2019-09-30 Zakl Automatyki I Urzadzen Pomiarowych Arex Spolka Z Ograniczona Odpowiedzialnoscia Elektryczne złącze ślizgowe
CN108127484B (zh) * 2017-11-29 2019-09-06 北京空间机电研究所 一种使用拼接环粘接的反射镜光学加工方法及加工装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2378979A1 (fr) * 1999-07-15 2001-01-25 Zhicheng Shao Dispositif de couplage electrique rotatif, support electrique et appareil chauffant electrique sans fil
DE10158381B4 (de) * 2001-11-28 2005-01-05 Stemmann-Technik Gmbh Schleifringübertrager
US6612849B1 (en) * 2002-05-21 2003-09-02 Charles Howard Scott Rotatable coupler for RF/UHF cables

Also Published As

Publication number Publication date
ATE342592T1 (de) 2006-11-15
DE502004001732D1 (de) 2006-11-23
ES2273134T3 (es) 2007-05-01
EP1610425A1 (fr) 2005-12-28
DK1610425T3 (da) 2007-02-19
EP1610424A1 (fr) 2005-12-28

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