EP3118946A1 - Collecteur tournant et unité comprenant un collecteur tournant - Google Patents

Collecteur tournant et unité comprenant un collecteur tournant Download PDF

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Publication number
EP3118946A1
EP3118946A1 EP15176837.1A EP15176837A EP3118946A1 EP 3118946 A1 EP3118946 A1 EP 3118946A1 EP 15176837 A EP15176837 A EP 15176837A EP 3118946 A1 EP3118946 A1 EP 3118946A1
Authority
EP
European Patent Office
Prior art keywords
slip ring
conductor element
conductor
brush
conductor elements
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
EP15176837.1A
Other languages
German (de)
English (en)
Other versions
EP3118946B1 (fr
Inventor
Ludwig Angerpointner
Peter Autenzeller
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.)
LTN Servotechnik GmbH
Original Assignee
LTN Servotechnik 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 LTN Servotechnik GmbH filed Critical LTN Servotechnik GmbH
Priority to EP15176837.1A priority Critical patent/EP3118946B1/fr
Priority to DE102016210122.6A priority patent/DE102016210122A1/de
Priority to TW105118791A priority patent/TWI671964B/zh
Priority to CN201610556170.7A priority patent/CN106356691B/zh
Priority to JP2016139164A priority patent/JP6769761B2/ja
Priority to US15/211,350 priority patent/US9806482B2/en
Publication of EP3118946A1 publication Critical patent/EP3118946A1/fr
Application granted granted Critical
Publication of EP3118946B1 publication Critical patent/EP3118946B1/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
    • H01R39/08—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
    • 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
    • H01R39/34—Connections of conductor to slip-ring

Definitions

  • the invention relates to a slip ring according to claim 1 and a slip ring unit comprising such a slip ring according to claim 10.
  • a slip ring unit usually comprises two component groups, namely a stator and a rotor.
  • the stator often comprises at least one brush unit, whereas the rotor usually has a series of slip rings.
  • brushes of the brush units have sliding contact with the shell sides of the rotating slip rings.
  • Such slip ring units are used in many technical fields to transmit electrical signals or electrical power from a stationary to a rotating electrical unit or in the opposite direction.
  • the invention has for its object to provide a slip ring for a slip ring unit, which is particularly suitable for the transmission of high-frequency currents or signals, while allowing a simple and economical production.
  • the slip ring comprises a dielectric carrier body with a peripheral lateral surface and radially oriented passages which penetrate the lateral surface or the carrier body. Furthermore, the slip ring comprises a first and a second conductor element, wherein the conductor elements each have a first portion and a second portion. In the first section, the two conductor elements are arranged to extend in the circumferential direction parallel to the axial offset on the lateral surface. In the second section, the conductor elements run in the bushings with a radial direction component. In each case, the first section extends over a first angular range of less than 360 °, so that there is a discontinuity along the circumferential direction of the conductor elements in each case in a second angular range.
  • the bushings are arranged such that the second angle range of the first conductor element is arranged offset relative to the second angle range of the second conductor element in the circumferential direction.
  • the first and second conductor elements are electrically connected together. In particular, then the first and the second conductor element are assigned to one and the same track.
  • the first sections of the two conductor elements therefore extend parallel to the axial offset, in particular in circular arc form on the lateral surface in the circumferential direction, while the second sections of the conductor elements in the passages extend in particular in a straight line with a radial directional component.
  • lateral surface is to be understood below according to the geometric definition for a cylindrical body, wherein the slip ring is cylindrical, may be configured in particular hollow cylindrical or annular.
  • the lateral surface is in particular the peripheral outer surface of the slip ring, but it can also be understood below the circumferential inner surface under this term.
  • first angle range and the second angle range along a circumferential line of a conductor element are dimensioned such that they extend in total over 360 °, ie over the full circumference.
  • discontinuity in the following means a point along a circumferential line, in which a conductor element at its outer diameter (in the case that the conductor elements are mounted on the outer lateral surface) or at its inner diameter (in the case that the conductor elements on the inner circumferential surface are mounted) does not rotate on the carrier body.
  • the ends of the first portion of a conductor element are spaced by a gap or a shock.
  • discontinuity can also be understood here as a gap or impact.
  • the discontinuity extends over a central angle corresponding to the second angular range, which is calculated in particular by the formula 360 ° minus the first angular range of the first portion of the conductor element.
  • the lateral surface comprises a first and a second circumferential groove, wherein the first conductor element is arranged in the first groove and the second conductor element in the second groove.
  • the slip ring on a third conductor element which is arranged in a first portion parallel with axial offset to the first and the second conductor element on the lateral surface extending in the circumferential direction.
  • the third conductor element extends with radial direction component in a second section in bushings.
  • the first section extends over a first angular range of less than 360 °, so that there is a discontinuity along the circumferential direction of the third conductor element in each case in a second angular range or along the second angular range.
  • the Passages arranged so that the second angle range of the third conductor element is arranged offset relative to the second angle range of the first and / or the second conductor element in the circumferential direction, wherein the first, the second and the third conductor element are electrically connected together.
  • further conductor elements can be arranged on the carrier body, so that, for example, four or more conductor elements can be arranged in four or more grooves.
  • the first angular range extends over at least 270 °, in a further advantageous embodiment over 300 °, in particular over 340 °.
  • the slip ring can also be designed so that along a circumferential line a plurality of conductor elements are arranged in the circumferential direction lined up, so that occur along this circumferential line several discontinuities.
  • the conductor elements are each configured as a wire, which in particular has a cross section of less than 20 mm 2 , in particular less than 10 mm 2 , in particular less than 5 mm 2 .
  • the wire can have a round cross-section, which can bring advantages in particular for the transmission of high-frequency signals.
  • the conductor elements are configured in one piece with their first and second sections.
  • the conductor elements are coated with a noble metal, for example gold.
  • the electrical connection of the conductor elements is arranged radially inwardly with respect to the first section.
  • the conductor elements are arranged on the outer circumference of the carrier body.
  • the electrically interconnected conductor elements are associated with a track which is bounded by webs axially.
  • the invention also relates to a slip ring unit which comprises a corresponding slip ring and a brush unit with a brush.
  • a slip ring unit which comprises a corresponding slip ring and a brush unit with a brush.
  • the two conductor elements can be contacted in a sliding manner by the brush via the respective first angular region, wherein the first angular region extends over at least 270 °.
  • the slip ring unit can be configured such that at least two conductor elements in the respective first section of the relevant conductor element can be contacted in a sliding manner over the entire circumference by the brush.
  • the brush is made of a metal-containing material.
  • a metal-containing material In particular, from a non-carbonaceous material.
  • the brush has a precious metal-containing, for example, gold-containing, surface.
  • the slip ring unit can in particular be constructed such that a conductor element can be doubly contacted by the brush.
  • the brush advantageously has two free ends, each of which bears against one and the same conductor element with an offset in the circumferential direction.
  • This arrangement can also be referred to as a double brush, which brings in particular a redundancy of the current or data transmission with it.
  • the slip ring unit is used for the transmission of electrical power and / or electrical signals, so for the transmission of information.
  • a slip ring unit which comprises a dielectric support body 1, which is designed substantially annular and a brush unit 2.
  • the slip ring unit has a total of five tracks for transmitting five different currents or signals, only two tracks will be exemplified below Channels explained in detail. Accordingly, the other of the tracks or channels are not provided with reference numerals.
  • the brush unit 2 has a plurality of electrically conductive brushes 2.1, 2.2, which are fastened to a brush holder 2.3.
  • the brushes 2.1, 2.2 are each designed as wires, in particular with a round cross-section, which are preferably coated with gold.
  • the first brush 2.1 belongs to the first track and the second brush 2.2 to the second track.
  • the slip ring unit is designed so that upon a relative rotation of the carrier body 1 or the conductor elements 10.1, 20.1; 10.2, 20.2 about an axis A is a current transmission, in particular a signal transmission between the conductor elements 10.1, 20.1; 10.2, 20.2 and the brushes 2.1, 2.2 is possible.
  • a conductor element 10.1, 20.1; 10.2, 20.2 contacted twice by a brush 2.1, 2.2, since each brush 2.1, 2.2 two areas each having a free end (double brush design).
  • the ends are radially movable in the context of the elasticity of the brush 2.1, 2.2.
  • 1.4 grooves 1.41, 1.42 are incorporated, which are formed in the illustrated embodiment as a circumferential v-shaped grooves 1.41, 1.42 (see FIGS. 3 and 4 ).
  • two grooves 1.41, 1.42 are provided for a track or a transmission channel in the illustrated embodiment.
  • the Kehllinien the grooves 1.41, 1.42, so those lines that arise at the points where the two surfaces of a groove 1.41, 1.42 converge, are arranged at an axial distance a.
  • the Kehllinien run perpendicular to the axis A in the circumferential direction. Axially between a pair of grooves 1.41, 1.42 webs 1.44 are arranged.
  • the carrier body 1 In the carrier body 1 are, as in the FIG. 3 represented, radially oriented feedthroughs 1.1, 1.2 or holes arranged, which penetrate the lateral surface 1.4, wherein the bushings 1.1, 1.2 are arranged on one and the same circumferential line at a distance U. In the region of the kinked lines, the bushings 1.1, 1.2 each have a recess 1.11, 1.21.
  • FIG. 5 is the same section of the slip ring as in FIG. 3 shown with the difference that in the FIG. 5 the conductor elements 10.1, 20.1 of the first track and the conductor elements 10.2, 20.2 of the second track are mounted on the carrier body 1.
  • the material for the conductor elements 10.1, 20.1 can be made available as a wound semi-finished product, so that the slip ring is comparatively inexpensive and economical to produce.
  • the conductor elements 10.1, 20.1 are correspondingly cut to length and bent so that the conductor elements 10.1, 20.1 have legs bent at their ends or second sections 10.12, 10.13, 20.12, 20.13 ( FIG. 6 ).
  • the conductor elements 10.1, 20.1 are inserted into the feedthroughs 1.1, 1.2, so that the second sections 10.12, 10.13, 20.12, 20.13 or their ends protrude radially inward from the carrier body 1 ( FIG. 6 ).
  • the conductor elements 10.1, 20.1 each have a first portion 10.1, 20.11, which runs in the respective groove 1.41, 1.42 in a circular arc around the axis A in the circumferential direction, in particular, the radial outer contour of the first sections 10.1, 20.11 extends along a circular arc.
  • Through the recesses 1.11, 1.21 is a precisely fitting arrangement of the conductor elements 10.1, 20.1 in the grooves 1.41, 1.42 in parallel with axial offset a possible.
  • the second sections 10.12, 10.13, 20.12, 20.13 or the ends of the conductor elements 10.1, 20.1 are soldered together.
  • a first solder joint 40.1 is generated, which connects the second sections 10.12, 10.13, 20.12, 20.13 electrically and mechanically.
  • the solder joint 40.1 is indicated by a dotted line.
  • the two conductor elements 10.1, 20.1 of the first track (which are thus arranged between two webs 1.44), by soldering the associated second portions 10.12, 10.13, 20.12, 20.13 on the same electrical potential.
  • the signal of a channel is applied to the conductor elements 10.1, 20.1.
  • the remaining conductor elements 10.2, 20.2 are mounted analogously.
  • the conductor elements 10.1, 20.1; 10.2, 20.2 are arranged in the grooves 1.41, 1.42 so that they each rotate in a wrap angle of less than 360 °.
  • the first sections 10.11, 20.11 of the conductor elements 10.1, 20.1 of the first track each extend along a circumferential line over a first angular range ⁇ 10, ⁇ 20 of less than 360 ° (in this case 355 °).
  • the second angle ranges ⁇ 10, ⁇ 20 extend here over an angle of 5 °.
  • the first angle range ⁇ 10, ⁇ 20 in each case complements the second angle range ⁇ 10, ⁇ 20 to 360 °.
  • the bushings 1.1, 1.2 are arranged so that the second angle range ⁇ 10 of the first conductor element 10.1 is offset relative to the second angle range ⁇ 20 of the second conductor element 20.1 in the circumferential direction, is a permanent contact of the brush 1.1 of the first track over a full Rotation with at least one of the conductor elements 10.1, 20.1 of the first track possible.
  • the conductor elements 10.1, 20.1 thus each have a first section 10.1, 20.11 which runs in the groove 1.41, 1.42 in a circular arc around the axis A, in particular the radial outer contour of the first sections 10.1, 20.11 (ie outside the discontinuity u10, u20) along a circular arc.
  • FIG. 7 a detail view is shown in which the brushes 2.1, 2.2 are in sliding contact with the conductor elements 10.1, 20.1 or 10.2, 20.2.
  • the brushes 2.1, 2.2 are each configured in the form of a comparatively elastic electrically conductive metal wire, wherein the surfaces of the brushes 2.1, 2.2 are gold-plated.
  • the brushes 2.1, 2.2 dip with a partial cross section between the conductor elements 10.1, 20.1; 10.2, 20.2, so that the brushes 2.1, 2.2 can not shift in the axial direction during operation of the slip ring unit.
  • the slip ring unit is used for transmitting electrical signals, in particular high-frequency signals.
  • the slip ring unit can transmit high data rates for example for Ethernet, Sercos data connections or other real-time data connections.
  • it is ensured by the special construction that the brushes 2.1, 2.2 permanent contact with conductor elements 10.1, 20.1; 10.2, 20.2.
  • the new design is characterized by a comparatively small electrical capacity in the transmission path, so that even extremely high-frequency signals are transferable.
  • the first track comprises three grooves 1.41, 1.42, 1.43 in the lateral surface 1.4 of the carrier body 1 '.
  • conductor elements 10.1, 20.1, 30.1 are mounted in an analogous manner as in the first embodiment.
  • the conductor elements 10.1, 20.1, 30.1 are arranged in the grooves 1.41, 1.42, 1.43 so that they each rotate in a first angular range ⁇ 10, ⁇ 20, ⁇ 30 of less than 360 °.
  • a discontinuity u10, u20, u30 or a gap is present on the outer circumference of the respective conductor element 10.1, 20.1, 30.1 in a second angular range ⁇ 10, ⁇ 20, ⁇ 30.
  • the conductor elements 10.1, 20.1, 30.1 in the grooves 1.41, 1.42, 1.43 run in such a way that the respective discontinuities u10, u20, u30 are arranged offset from one another in the circumferential direction.
  • the first track with the conductor elements 10.1, 20.1, 30.1 is separated from a neighboring second track by a bridge 1.44.
  • the first Brush 2.1 ' comprises two brush elements 2.1a', 2.1b '.
  • the brush elements 2.1a ', 2.1b' are each designed as wires, in particular with a round cross-section, which are preferably coated with a noble metal, for example gold.
  • the first track comprises three grooves 1.41, 1.42, 1.43 in the lateral surface 1.4 of the carrier body 1. "In these grooves 1.41, 1.42, 1.43 conductor elements 10.1, 20.1, 30.1 mounted in an analogous manner as in first or second embodiment.
  • the first track with the conductor elements 10.1, 20.1, 30.1 is separated from a neighboring second track by a bridge 1.44.
  • the first brush 2.1 “comprises two brush elements 2.1a", 2.1b "soldered to one another.
  • the first brush element 2.1a" is designed as a wire, in particular with a round cross section.
  • the second brush element 2.1b fastened. This is designed substantially parallelepipedic and is made in particular of silver graphite.
  • the first brush element 2.1a “serves to transmit currents or signals and to radially spring the second brush element 2.1b" to the conductor elements 10.1, 20.1, 30.1.
  • the webs 1.44 also a limitation of the movement of the second brush element 2.1 b "is ensured in the axial direction.
EP15176837.1A 2015-07-15 2015-07-15 Collecteur rotatif et unité comprenant un collecteur rotatif Active EP3118946B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP15176837.1A EP3118946B1 (fr) 2015-07-15 2015-07-15 Collecteur rotatif et unité comprenant un collecteur rotatif
DE102016210122.6A DE102016210122A1 (de) 2015-07-15 2016-06-08 Schleifring sowie Schleifringeinheit mit einem Schleifring
TW105118791A TWI671964B (zh) 2015-07-15 2016-06-15 集電環及具集電環之集電環單元
CN201610556170.7A CN106356691B (zh) 2015-07-15 2016-07-14 集电环以及具有集电环的集电环单元
JP2016139164A JP6769761B2 (ja) 2015-07-15 2016-07-14 スリップリング、及びスリップリングを有するスリップリング装置
US15/211,350 US9806482B2 (en) 2015-07-15 2016-07-15 Slip ring and slip ring unit having a slip ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15176837.1A EP3118946B1 (fr) 2015-07-15 2015-07-15 Collecteur rotatif et unité comprenant un collecteur rotatif

Publications (2)

Publication Number Publication Date
EP3118946A1 true EP3118946A1 (fr) 2017-01-18
EP3118946B1 EP3118946B1 (fr) 2017-09-13

Family

ID=53758001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15176837.1A Active EP3118946B1 (fr) 2015-07-15 2015-07-15 Collecteur rotatif et unité comprenant un collecteur rotatif

Country Status (6)

Country Link
US (1) US9806482B2 (fr)
EP (1) EP3118946B1 (fr)
JP (1) JP6769761B2 (fr)
CN (1) CN106356691B (fr)
DE (1) DE102016210122A1 (fr)
TW (1) TWI671964B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3716415A1 (fr) 2019-03-26 2020-09-30 LTN Servotechnik GmbH Bague collectrice ainsi qu'unité de bague collectrice dotée d'une bague collectrice

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10756926B2 (en) * 2018-07-01 2020-08-25 Benchmark Electronics, Inc. System and method for transmission of video and controller area network (CAN) data over a power slip ring assembly
EP3618204A1 (fr) 2018-08-27 2020-03-04 Siemens Aktiengesellschaft Corps de bague collectrices

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US20090091208A1 (en) * 2007-10-05 2009-04-09 Taiwan Long Hawn Enterprise Co. Combination - type collector ring unit

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Publication number Priority date Publication date Assignee Title
US1339988A (en) * 1917-03-20 1920-05-11 Steinberger Louis Insulating collector or distributer spool
US2551030A (en) * 1949-05-11 1951-05-01 Cleveland Electric Motor Compa Slip ring assembly
DE1796293U (de) * 1956-03-29 1959-09-24 Siemens Ag Umlaufender ringfoermiger kontaktkoerper aus kohle, insbesondere stromabnehmer fuer elektrische maschinen.
US5224138A (en) 1991-01-28 1993-06-29 Kabushiki Kaisha Toshiba Slip ring device
US20090091208A1 (en) * 2007-10-05 2009-04-09 Taiwan Long Hawn Enterprise Co. Combination - type collector ring unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3716415A1 (fr) 2019-03-26 2020-09-30 LTN Servotechnik GmbH Bague collectrice ainsi qu'unité de bague collectrice dotée d'une bague collectrice

Also Published As

Publication number Publication date
US20170018900A1 (en) 2017-01-19
TW201711322A (zh) 2017-03-16
CN106356691A (zh) 2017-01-25
JP6769761B2 (ja) 2020-10-14
TWI671964B (zh) 2019-09-11
US9806482B2 (en) 2017-10-31
EP3118946B1 (fr) 2017-09-13
CN106356691B (zh) 2019-07-26
JP2017028989A (ja) 2017-02-02
DE102016210122A1 (de) 2017-01-19

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