EP2732510A1 - Schleifringbürste mit galvanischem multischichtsystem - Google Patents
Schleifringbürste mit galvanischem multischichtsystemInfo
- Publication number
- EP2732510A1 EP2732510A1 EP12726135.2A EP12726135A EP2732510A1 EP 2732510 A1 EP2732510 A1 EP 2732510A1 EP 12726135 A EP12726135 A EP 12726135A EP 2732510 A1 EP2732510 A1 EP 2732510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact material
- brush
- contact
- layer
- slip ring
- 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
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
- H01R39/08—Slip-rings
- H01R39/10—Slip-rings other than with external cylindrical contact surface, e.g. flat slip-rings
-
- 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
- H01R39/022—Details for dynamo electric machines characterised by the materials used, e.g. ceramics
- H01R39/025—Conductive materials
-
- 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
- H01R39/08—Slip-rings
-
- 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
Definitions
- the invention relates to a grinding ring arrangement for transmitting electrical signals by means of sliding contacts between mutually rotatable parts.
- a sliding track made of electrically conductive material
- at least one sliding contact also called a brush, grinds from a likewise electrically conductive material. Due to the galvanic contact between the sliding tracks and contact electrical current can be transmitted.
- EP 0 662 736 A discloses a slip ring assembly in which a multi-wire brush runs in a vacuum. This results from the parallel connection of several contacts a low contact resistance.
- the contact pairings i. the outer metal layers of the brushes and the sliding tracks made of electrically highly conductive and abrasion resistant materials.
- the contact pairings Preference is given to using gold-based layers. Nevertheless, it often comes after longer periods of operation to a wear of brushes and / or slideways. If the gold layer of a slideway is damaged, the brush runs on the underlying layer, which comprises, for example, nickel or another similar metal. It comes here immediately to massive contact disturbances and a strong abrasion of the brush. In such an error case often only a complete replacement of brush and sanding path is necessary.
- the object of the invention is to increase the service life of slip ring systems, to provide slip ring systems with emergency running properties and to enable an early indication of wear.
- the invention is based on the combination of different contact materials with different Abriebeigenticianen.
- the brush which may comprise one or more wires, has on its surface, ie on the surface of the one or more wires, a first electrically highly conductive contact material.
- the brush may also consist entirely of this first contact material.
- the brush rests on a corresponding sliding track and can grind along it when moving.
- the slideway comprises at least one upper layer with a second electrically highly conductive contact material. Under this upper layer, a lower layer is arranged with a third electrically good conductive contact material.
- the layers of the second and third contact material have similar good properties in contact with the first contact material and have a low contact resistance. Under this layer may be further layers, such as nickel and / or copper based layers. These layers are preferably applied by electroplating. According to the invention, these layers have sliding properties relative to each other.
- the abrasion of the second contact material upon contact of the brush comprising the first contact material with the upper layer comprising the second contact material, the abrasion of the second contact material is greater than that of the first contact material.
- the upper layer of the grinding path comprising the second contact material wears faster than the brush comprising the first contact material.
- the abrasion of the third contact material is smaller than that of the first contact material.
- the abrasion proceeds from a new brush with a new sanding path as follows: first, the second upper layer contact material wears out, which is the normal life of a slip ring system. After the layer of the second contact material is used up, the brush makes contact with the third contact material of the lower layer. Transmission properties of the slip ring are retained, since the third contact material also has good electrical conductivity and good contact properties. As a result, emergency running properties or a significant extension of the service life can be achieved.
- This third contact material of the grinding path is, as already described above, more resistant to abrasion than the first contact material of the brush. Thus, the brush now wears faster than the grinding path.
- the upper layer of the grinding path with the second contact material has a hardness smaller than that of the other two contact materials.
- the brush with the first contact material preferably has a greater hardness than the upper layer of the grinding path with the second contact material and a lower hardness than the lower layer of the grinding path with the third contact material.
- the lower layer of the grinding path with the third contact material preferably has a hardness greater than the other two contact materials.
- the harder lower layer results in a stable layer construction.
- the term hardness is understood to mean the hardness of Rockwell or Brinell or Vickers.
- the lower layer of the grinding path has a relatively smooth surface, in particular with a roughness depth of less than 1 ⁇ m, and particularly preferably less than 0.1 ⁇ m. As a result, a particularly abrasion-free sliding of the brush on this layer can be realized.
- the brush is made of solid material from the first contact material. There is then a lot of material available for abrasion, so that there is an extended life.
- the brush has a further layer with a fourth contact material under the layer with the first contact material.
- the fourth contact material is preferably harder than the first contact material, and more preferably harder than the third contact material.
- the life of the slip ring can be further extended.
- the first contact material of the brush has a hardness in the range of HV 270-350.
- the hardness of the second contact material of the grinding path may be in the range of HV 180-220.
- the range of hardness of the third contact material of the grinding path may be in a range of HV 350-420.
- contact materials here always refers to materials which are suitable in mechanical contact with another contact material for the transmission of electrical signals.
- Contact materials preferably have low contact resistance and, for use in slip rings, low contact noise during mechanical movement.
- Contact materials are, for example, gold and / or silver and alloys thereof.
- No contact materials are, for example, steel, which due to its spring properties as the core of a Brush can be used when it is coated with a contact material, or nickel, which is used in the galvanic layer structure of slip rings below a layer of contact material.
- Another aspect of the invention is a method of making a sanding pad for brushing with a brush.
- the brush has a first contact material on the surface.
- the method comprises the following steps:
- FIG. 1 shows a device according to the invention
- Figure 2 shows a slip ring assembly in general form
- Figure 3 shows various stages of abrasion
- FIG. 4 shows a brush with visible wear
- FIG. 1 shows a device according to the invention.
- the brush 10 has a layer 11 of a first contact material.
- the brush may also consist entirely of this first contact material. It runs in a V-shaped groove of the grinding path 30 and abuts against the support points 50, 51 on the grinding path.
- the grinding path 30 has a lower layer 32 with a third contact material and an upper layer 31 with a second contact material.
- the layers of the contact materials are shown clearly enlarged in these figures in order to illustrate the drawings. In fact, typical layer thicknesses in the range of about 3 ⁇ to 5 ⁇ .
- FIG. 2 shows a slip ring arrangement in a general form.
- a grinding path 30 On a grinding path 30 at least one brush 10, which is held by a brush holder 20 runs.
- FIG. 3a shows the new condition with completely formed and non-written off layers of contact materials 11, 31, 32.
- FIG. 3b shows a worn one upper layer 31 with second contact material of the grinding path.
- the layer 11 with the first contact material of the brush without signs of wear As a result of further use of the slip ring, this layer now also wears, so that the state shown in FIG. 3c is established.
- the brush has a core of a non-contact material, such as steel, the wear limit has now been reached. If the brush is made of the first contact material, then it can continue to be used.
- Figure 4 shows a side view of a brush 10 with worn contact material.
- a material defect has been created at position 12 due to grinding on the slideway. This can be used for wear indication.
- the top layer 31 is removed with the second contact material of the grinding path and a wear limit has not yet been reached. Only when material defects on the brush occur, this rubs in the lower layer 32 of the grinding path. In this state, an exchange or a renewal of the slideway should now take place.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Electroplating Methods And Accessories (AREA)
- Motor Or Generator Current Collectors (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011051804A DE102011051804B4 (de) | 2011-07-13 | 2011-07-13 | Schleifringbürste mit galvanischem Multischichtsystem |
PCT/EP2012/060918 WO2013007458A2 (de) | 2011-07-13 | 2012-06-08 | Schleifringbürste mit galvanischem multischichtsystem |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2732510A1 true EP2732510A1 (de) | 2014-05-21 |
EP2732510B1 EP2732510B1 (de) | 2018-06-27 |
Family
ID=46210285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12726135.2A Active EP2732510B1 (de) | 2011-07-13 | 2012-06-08 | Schleifringbürste mit galvanischem multischichtsystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US9640928B2 (de) |
EP (1) | EP2732510B1 (de) |
CN (1) | CN103797660B (de) |
DE (1) | DE102011051804B4 (de) |
WO (1) | WO2013007458A2 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104969425B (zh) * | 2012-12-18 | 2018-10-19 | 史莱福灵有限公司 | 自润滑式滑环 |
CN105393413B (zh) | 2013-05-17 | 2019-01-04 | 史莱福灵有限公司 | 用于多纤维电刷的高电流滑环 |
EP2838166B1 (de) | 2013-08-16 | 2019-09-25 | Schleifring GmbH | Schleifringanordnung und Komponenten davon |
EP2842711B1 (de) | 2013-08-26 | 2018-10-10 | Airbus Operations GmbH | Vorrichtung und Verfahren zur Herstellung einer Flugzeugkomponente aus Verbundmaterial |
EP3118946B1 (de) * | 2015-07-15 | 2017-09-13 | LTN Servotechnik GmbH | Schleifring sowie schleifringeinheit mit einem schleifring |
CN107447237B (zh) * | 2016-05-30 | 2021-04-20 | 史莱福灵有限公司 | 具有降低的接触噪声的滑环 |
EP3293836B1 (de) * | 2016-09-08 | 2019-04-17 | Schleifring GmbH | Verfahren zur herstellung von kontaktdrahten für schleifringe, vorrichtung zur herstellung von kontaktdrahten für schleifringe und kontaktdrahten für schleifringe |
CN108709876B (zh) * | 2018-03-26 | 2020-12-22 | 华南理工大学 | 一种用于水产养殖的多参数监测青苔及水质装置 |
CN111682383B (zh) * | 2020-06-16 | 2022-02-18 | 浙江大华技术股份有限公司 | 一种导电滑环 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2551030A (en) * | 1949-05-11 | 1951-05-01 | Cleveland Electric Motor Compa | Slip ring assembly |
US3226666A (en) * | 1962-10-08 | 1965-12-28 | Kollmorgen Corp | Slip ring unit with debris-collecting means |
US3297973A (en) | 1963-08-30 | 1967-01-10 | Poly Scient Corp | Floating-brush contact assembly |
GB1388123A (en) * | 1972-02-29 | 1975-03-26 | Int Research & Dev Co Ltd | Current transfer brushes |
DD101246A1 (de) | 1972-08-21 | 1973-10-20 | ||
DE2817402C2 (de) * | 1978-04-20 | 1986-04-30 | Siemens AG, 1000 Berlin und 8000 München | Stromübertragungsbürste |
US4398113A (en) * | 1980-12-15 | 1983-08-09 | Litton Systems, Inc. | Fiber brush slip ring assembly |
DD221885A1 (de) * | 1983-11-29 | 1985-05-02 | Elektromasch Forsch Entw | Elektrischer gleitkontakt, insbesondere fuer kommutierungssysteme |
US4668959A (en) * | 1985-12-10 | 1987-05-26 | Iris Graphics Inc. | Mist reduction for ink jet printers |
FR2715005B1 (fr) | 1994-01-10 | 1996-03-22 | Air Precision Sa | Collecteur électrique tournant à balais multibrins. |
US6517357B1 (en) * | 2000-11-22 | 2003-02-11 | Athan Corporation | Slip ring and brush assembly for use in a video recorder |
JP2004040844A (ja) * | 2002-06-28 | 2004-02-05 | Shinano Kenshi Co Ltd | 整流子およびこれを用いた回転電機 |
JP4520191B2 (ja) * | 2003-07-11 | 2010-08-04 | マブチモーター株式会社 | 小型モータの整流装置の製造方法 |
DE102004007702B4 (de) * | 2004-02-16 | 2006-04-20 | Schleifring Und Apparatebau Gmbh | Schleifbahnvorrichtung und Bürstenvorrichtung mit Oberflächenbeschichtung |
-
2011
- 2011-07-13 DE DE102011051804A patent/DE102011051804B4/de active Active
-
2012
- 2012-06-08 WO PCT/EP2012/060918 patent/WO2013007458A2/de active Application Filing
- 2012-06-08 CN CN201280034784.9A patent/CN103797660B/zh active Active
- 2012-06-08 EP EP12726135.2A patent/EP2732510B1/de active Active
-
2014
- 2014-01-10 US US14/152,496 patent/US9640928B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013007458A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013007458A9 (de) | 2013-03-28 |
DE102011051804B4 (de) | 2013-09-19 |
CN103797660A (zh) | 2014-05-14 |
EP2732510B1 (de) | 2018-06-27 |
US9640928B2 (en) | 2017-05-02 |
US20140179125A1 (en) | 2014-06-26 |
CN103797660B (zh) | 2016-06-01 |
WO2013007458A2 (de) | 2013-01-17 |
DE102011051804A1 (de) | 2013-01-17 |
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