EP4154363A1 - Contact de mise à la terre et procédé de dissipation de courants électriques - Google Patents

Contact de mise à la terre et procédé de dissipation de courants électriques

Info

Publication number
EP4154363A1
EP4154363A1 EP20730398.3A EP20730398A EP4154363A1 EP 4154363 A1 EP4154363 A1 EP 4154363A1 EP 20730398 A EP20730398 A EP 20730398A EP 4154363 A1 EP4154363 A1 EP 4154363A1
Authority
EP
European Patent Office
Prior art keywords
conductor
contact
rotor part
earthing
contact surface
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.)
Pending
Application number
EP20730398.3A
Other languages
German (de)
English (en)
Inventor
Ralf HOERR
Philipp HORNIK
Tom NUSCH
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.)
Schunk Transit Systems GmbH
Original Assignee
Schunk Transit Systems 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 Schunk Transit Systems GmbH filed Critical Schunk Transit Systems GmbH
Publication of EP4154363A1 publication Critical patent/EP4154363A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/04—Carrying-off electrostatic charges by means of spark gaps or other discharge devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/40—Structural association with grounding devices
    • 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
    • H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
    • 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
    • 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
    • H01R39/18—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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/02—Carrying-off electrostatic charges by means of earthing connections

Definitions

  • the invention relates to a grounding contact and a method for diverting electrical currents from a rotor part of a machine, in particular a vehicle, rail vehicle or the like, formed with an axis or shaft, into a stationary stator part of the machine, comprising a holding device and a contact element, the holding device with the stationary stator part of the machine can be electrically connected, the contact element being designed as a flexurally elastic conductor, the conductor having a free end that can be arranged on a limb of the rotor part and an end attached to the holding device, the conductor being dimensionally stable in this way that in order to form an electrically conductive sliding contact between a sliding contact surface of the conductor provided for forming the sliding contact and a contact surface on the limb of the rotor part, a contact force can be applied to the contact surface.
  • a discharge device for discharging electrostatic charges from a wave in which a carbon lenstoffmaschinean extract is arranged from a plurality of filaments on a Hal ter, which is annular and arranged coaxially to the shaft.
  • shaft contact sections of the individual filaments are aligned normal to the shaft circumference.
  • a physical contact between the filaments and the shaft circumference therefore only occurs at the axial ends of the filaments.
  • Due to the arrangement of the filaments normal to the shaft circumference depending on the direction of rotation of the shaft, there is an inclination of the filaments in the direction of rotation. In particular when the direction of rotation of the shaft changes, filaments are inclined in the opposite direction. As a result, if there are frequent changes in direction, the filaments can break and the carbon fiber arrangement splices. Electrical contacting of the shaft is then no longer ensured in the desired manner.
  • ground contact is known from DE 10 2015 206 520 A1.
  • conductors are attached to an annular holder and bear tangentially on the circumference of the axle of the vehicle. These conductors are made of carbon fibers and are attached to the annular holder at their respective ends.
  • the disadvantage here is that the production of such a grounding contact is very expensive due to the location and fastening of the carbon fibers on the ring-shaped holder.
  • the position of the conductor relative to the axis or shaft must be precisely matched to the relevant diameter of the shaft so that the desired contact force is exerted on the circumference of the shaft.
  • the assembly of this grounding contact is complex, since an assembly aid is required to center the ring-shaped holder together with the conductors clamped thereon at one axial end of the shaft and without damaging the conductors on the circumference of the shaft with one formed between the conductors To postpone before tension or a contact force.
  • the present invention is therefore based on the object to propose a ground contact and a method for deriving electrical currents from a rotor part of a machine formed with an axis or shaft, with which a safe direction-independent contact is made possible with simple means.
  • the grounding contact according to the invention for diverting electrical currents from a rotor part of a machine, in particular a vehicle, rail vehicle or the like, formed with an axis or shaft into a stationary stator part of the machine comprises a holding device and a contact element, the holding device with the stationary stator part of the Machine is electrically conductively connectable, the contact element being designed as a flexible conductor, the conductor having a free end that can be arranged on an Elmfang of the rotor part and an end attached to the holding device, the conductor being dimensionally stable in such a way that to form an electrically conductive sliding contact between a sliding contact surface of the conductor provided for forming the sliding contact and a contact surface on the Elmfang of the rotor part, the contact surface can be acted upon with a contact force, the conductor between the free end and de m attached end is designed so that it can be bent in an arc shape, such that when the grounding contact is arranged on the rotor part, the free end extend
  • the contact element is designed as a flexurally elastic electrical conductor which can be contacted with the Elmfang of the rotor part or the axis or shaft of the machine.
  • the rotor part is an axle or a shaft.
  • the axis or shaft has an ElmfangKey Scheme on the Elmfang, where the conductor on the Wave can be created.
  • the attached end of the conductor is firmly fixed to the holding device, with the free end resting on the limb. Since the conductor is electrically conductive, the electrically conductive sliding contact can be formed between the rotor part and the stator part, via which electrostatic charges can be discharged.
  • the flexurally elastic and thus dimensionally stable formations of the conductor make it possible to preload the conductor on the circumference of the shaft and thus apply a contact force to the shaft.
  • the conductor is further attached to the holding device in such a way that the free end of the conductor extends in the direction of an axis of rotation of the rotor part.
  • the free end is accordingly inclined in the direction of the axis of rotation or aligned precisely with it.
  • the flexurally elastic, dimensionally stable design of the conductor in one direction can prevent the conductor from aligning with the free end in one direction of rotation.
  • a direction-of-rotation-dependent movement of the conductor and a fanning-out at the free end can thus be avoided, as a result of which an extended service life of the earthing contact can be achieved.
  • the conductor can nestle against the shaft or the contact surface of the circumference of the shaft, which enables reliable contact to be made.
  • the conductor can initially be designed essentially straight, so that a deformation of the conductor occurs when the grounding contact is pushed on axially or when the grounding contact is joined together radially on the rotor part or the shaft.
  • the conductor is then bent in an arc shape, for example with a radius, between the free end and the fastened end, which creates a preload with the contact force.
  • the conductor is designed in such a way that the conductor is bent in such a way that the free end extends in the direction of the axis of rotation of the rotor part.
  • a shape of the conductor is consequently designed in such a way that a bend of the conductor essentially in one direction is possible on its own. In this way, undesired deformation of the conductor can be prevented. changes and an assembly of the ground contact on an axis or shaft or a rotor part of a machine can be significantly simplified.
  • a section of the conductor can be arranged with the free end parallel relative to the axis of rotation.
  • the free end of the conductor can then be bent in the direction of the axis of rotation of the rotor part in such a way that, starting from the free end, the section of the conductor extends somewhat parallel to the axis of rotation of the rotor part.
  • the attached end can be arranged on the holding device to run transversely, preferably orthogonally, to the axis of rotation of the rotor part.
  • the attached end accordingly extends essentially at right angles relative to the axis of rotation, but can also, for example, be inclined at an obtuse angle relative to the axis of rotation. If the free end extends in the direction of the axis of rotation, an angle of essentially 90 ° can be formed between the free end and the fixed end.
  • the earthing contact to use for different Elmflinde or diameter of rotor parts, since a large tolerance compensation is possible due to the bow-shaped bendability of the conductor.
  • the earthing contact therefore does not necessarily always have to be adapted to a fixed diameter of a rotor part, but can be used for rotor parts within a diameter range.
  • the grounding contact can thus be established in a standardized and more cost-effective manner.
  • the conductor can be designed at least in sections with a rectangular cross section.
  • the rectangular cross-section is then at least like this in a region of the conductor that can be bent in an arc designed that the conductor can only be bent in the direction of the axis of rotation.
  • the rectangular cross section makes it possible to make the conductor bendable in a defined direction.
  • the cross section of the conductor also has a different shape that ensures this flexibility.
  • a longitudinal axis of the rectangular cross-section or a neutral bending line of the conductor cross-section then always runs in the manner of a passer-by relative to a cross-section of the rotor part.
  • the conductor can preferably be designed as a conductor strip.
  • a band-shaped conductor can simply be attached to the holding device and arranged on the rotor part with a small installation space.
  • the conductor can be made predominantly of carbon. This can prevent possible corrosion of the conductor. At the same time, there is little friction or dry lubrication of the conductor on the circumference of the rotor part, so that maintenance is essentially unnecessary.
  • the conductor can be formed from carbon fibers.
  • the carbon fibers can be formed in a structured carbon fiber arrangement, for example as a fiber braid.
  • the conductor is alternatively formed from other electrically conductive fibers.
  • the conductor is formed from a fiber braid made of carbon fibers and metal fibers.
  • the metal fibers can consist of aluminum, copper, silver, gold or alloys of these substances.
  • the conductor can be formed out of a layer of a felt or a fleece.
  • the layer of a textile fabric can form a conductor strip.
  • the felt or the fleece can consist of electrically conductive fibers, for example carbon fibers.
  • a felt or a fleece is flexurally elastic due to the unstructured arrangement of the fibers.
  • a conductor designed in this way is insensitive to contamination, since oil or dirt particles located on the circumference of the rotor part can be absorbed by the felt or fleece. Contact is then only insignificantly influenced by oil or dirt particles.
  • the conductor can furthermore be formed from a plurality of layers in a stacking arrangement.
  • a precisely defined contact force can be easily formed.
  • the layers with the same or different geometry can be arranged on top of one another in the manner of an elliptical spring or leaf spring, so that a spring package is formed with a desired spring characteristic.
  • a contact pressure on the circumference of the rotor part can then be set or varied via the number of layers.
  • the conductor is infiltrated with pyrolytic carbon is particularly advantageous.
  • the conductor is formed, for example, from fibers, in particular carbon fibers
  • the pyrolytic carbon coating can serve to compress a contact surface of the conductor and to form a sheath that supports the fiber braid in question.
  • the infiltration with the pyrolytic carbon or a coating of the fibers then ensures the desired flexurally elastic properties of the conductor, which has a rigidity that can in particular also be influenced by the thickness of the coating on the fibers.
  • Coating carbon fibers with the C VI process has proven to be particularly advantageous, as this process is not only used for surface coating of the conductor, but also for the development of binding forces between the individual filaments of the fiber braid cares.
  • the fiber braid can consist of sheaths of a unidirectional one extending in the longitudinal direction of the conductor Be formed fiber strand, which has filaments running essentially parallel to each other, so that capillary pillars are formed through fiber interstices, which enable the utilization of capillary effects for the removal of fat or moisture from the circumference of the rotor part.
  • the holding device can have a stationary ring body and at least one pressure element, wherein the attached end of the conductor can be connected to the holding device between the ring body and the pressure element in a non-positive, positive and / or material fit.
  • the holding device then consists of at least two components and is therefore particularly simple and inexpensive to adjust.
  • the pressure element can be designed such that the attached end of the conductor is clamped between the ring body and the pressure element. This can be done, for example, by screwing, pressing or squeezing. Alternatively or additionally, depending on the material pairing, the conductor can also be glued, soldered or welded to the ring body.
  • the ring body can be designed in the shape of a circular ring with an axial contact surface for the conductor, the pressure element being designed as a circular ring and being able to be braced against the contact surface.
  • the ring body can be designed at least in the form of a disk, the conductor then being arranged on the axial contact surface and being pressed against the ring body via the pressure element, which can also be designed like a disk.
  • the ring body and / or the pressure element can be designed with a quadratic outer contour. The conductor is therefore clamped between the ring body and the pressure element.
  • a connection between the ring body and the pressure element can be formed, for example, by a simple screw connection or by pressing into one another.
  • An inner diameter of the contact surface can be approximated to an outer diameter. This makes it possible to ensure that the grounding contact is centered on the rotor part with the inner diameter of the contact surface.
  • the inside diameter then forms an assembly aid for the grounding contact, since if the grounding contact is pushed onto the circumference of the rotor part, for example, a radial offset of the grounding contact or tilting of the grounding contact is only possible within a defined tolerance range.
  • the contact surface and / or the pressure element can form at least one hump for clamping and / or for positively locking the conductor.
  • the hump can be a material increase on the contact surface and / or the pressure element.
  • a plurality of humps or grooves can be provided in relation to a cross section of the contact surface or the pressure element, which can bring about a large clamping force and positive locking of the conductor when the ring body and pressure element are joined together.
  • a recess can be formed in the conductor, into which the hump engages in order to prevent the conductor from twisting on the contact surface and / or the pressure element.
  • the hump can serve as a spacer to form a precise distance between the contact surface and the pressure element, so as to ensure a defined clamping of the conductor.
  • An outer diameter of the ring body can be formed by a radial shoulder, the outer diameter being able to form a press fit with an inner diameter in the stator part.
  • a longitudinal sectional surface of the ring body can consequently be L-shaped, with the radial shoulder and a second leg being able to form the axial contact surface.
  • the grounding contact can be pressed in so easily, for example, in a housing cover, so that a good electrical contact is established between the housing cover and the Erdungskon contact without additional mounting means. It is also then possible to mount the earth contact together with the housing cover on the rotor part.
  • the ground contact can be designed to be radially divisible ver bindable.
  • the holding device can then consist of two half-rings which can be placed around the circumference of the rotor part and connected to one another or separated again accordingly. If the holding device is formed from an annular body and a pressure element, the annular body and the pressure element can each be designed to be divided. Sliding onto one end of the rotor part is then no longer necessary, so that the earthing contact can also be used for shaft or axle sections that are not accessible from one end.
  • the ground contact can comprise at least two, three, four or more conductors, which can be arranged on the holding device coaxially, preferably symmetrically, relative to the axis of rotation.
  • the conductors can be equidistantly spaced from one another in a circumferential direction of the rotor part, wherein preferably all of the conductors can then be arranged in a common shaft contact plane which runs orthogonally to the axis of rotation of the rotor part. It can then also always be ensured that the grounding contact is arranged coaxially relative to the circumference. Installation of the grounding contact on the circumference or the rotor part is also significantly simplified, since the grounding contact is centered itself.
  • the ring body and / or the pressure element can each be formed in one piece.
  • a one-piece ring or a circular ring, for example, can easily be produced by turning, punching, pressing, deep drawing, laser cutting, etc.
  • a holding device designed in this way is particularly suitable for mounting on free axle or shaft ends.
  • the machine according to the invention comprises a grounding contact according to the invention for diverting electrical currents from one to one Axis or shaft formed rotor part in a fixed stator part of the machine.
  • electrical currents are diverted from a rotor part of a machine, in particular a vehicle, rail vehicle or the like, formed with an axis or shaft, into a stationary stator part of the machine with a grounding contact comprising a holding device and a contact element, the holding device is electrically conductively connected to the stationary stator part of the machine, the contact element being designed as a flexurally elastic conductor, the conductor having a free end arranged on a limfang of the rotor part and an end attached to the holding device, with an electrically conductive sliding contact between a Sliding contact surface of the conductor and a contact surface on the Elmfang of the rotor part is formed, wherein the conductor is dimensionally stable in such a way that the contact surface is subjected to a contact force, the conductor between the free end and the bef Este end is formed arcuate, the free end extending in the direction of an axis of rotation of the rotor part.
  • Fig. 2 is a longitudinal sectional view of the ground contact.
  • FIG. 1 and 2 show sectional views of a grounding contact 10, wherein in Fig. 1, the grounding contact 10 in connection with a rotor part 11 and a stator part 12 on a machine not shown here, and in Fig. 2 the grounding contact alone is shown.
  • the grounding contact 10 serves to divert electrical currents from the rotor part 11 to the stator part 12 or vice versa.
  • the earthing contact 10 comprises a holding device 13 and a contact element 14 which is formed by a conductor 15.
  • the holding device 13 is essentially formed from a stationary ring body 16 and a pressure element 17.
  • the ring body 16 is designed in the shape of a circular ring and forms an axial contact surface 18.
  • the Anyakele element 17 is designed as a circular ring 19 and inserted into the ring body 16.
  • the ring body 16 further forms a radial shoulder 20 with an outside diameter 21, the outside diameter 21 or the ring body 16 being inserted into an inside diameter 22 of a housing cover 23 of the stator part 12.
  • a press fit between the outer diameter 21 and the inner diameter 22 ensures good electrical contact and adequate attachment of the earth contact 10 to the housing cover 23.
  • the ring body 16 is asbil det with an inner diameter 24, which is approximated to an outer diameter 25 of a pin 26 of a shaft 27 of the rotor part 11.
  • the shaft 27 is therefore radially encompassed by the grounding contact 10.
  • a circumference 28 of the pin 26 forms a contact surface 29 for forming a sliding contact with the conductor 15.
  • the grounding contact 10 here comprises four conductors 15, which are arranged coaxially to an axis of rotation 30 of the rotor part 11 and are equidistant from one another relative to one another based on the circumference 28 are spaced.
  • the conductors 15 are each designed as a conductor strip 31 which is clamped between the ring body 16 and the pressure element 17.
  • the conductor strip 31 is formed by a one-piece, molded fleece made of carbon fibers.
  • a hump 32 is formed on the contact surface 18, which engages in a recess in the conductor 15, not shown here.
  • the pressure element 17 is screwed to the ring body 16 by means of screws (not shown here) or a threaded connection and is thus braced against the contact surface 18 with the conductors 15.
  • the conductors 15 are essentially made of carbon fibers which are infiltrated with pyrolytic carbon and are thus made flexible.
  • a fastened end 33 of the conductor 15 clamped to the holding device 13 is arranged essentially orthogonally relative to the axis of rotation 30, a free end 34 of the conductor 15 being bent relative to the fastened end 33 to such an extent that the free end 34 is parallel to the axis of rotation 30 extends.
  • a bow 35 is formed between the attached end 33 and the free end 34 as a result of this bending.
  • the free ends 34 When the grounding contact 10 is mounted on the pin 26, the free ends 34 also initially run orthogonally relative to the rotation axis 30, but are deformed as a result of being pushed onto the pin 26 with the shape shown here or the arc 35, so that a Contact force is brought about by the flexible conductor 15 on the circumference 28.
  • a direction of deformation of the conductors 15 is always ensured by the fact that the conductors 15 are designed in the form of a strip.
  • the orientation of the conductor 15 is then not influenced by a direction of rotation of the rotor part 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

L'invention concerne un contact de mise à la terre (10) et un procédé de dissipation de courants électriques d'une partie rotor (11) d'une machine, en particulier d'un véhicule, d'un véhicule ferroviaire, ou analogue, et formée avec un essieu ou avec un arbre (27), dans une partie stator fixe (12) de la machine, comprenant un dispositif de retenue (13) et un élément de contact (14), le dispositif de retenue pouvant être connecté de manière électroconductrice à la partie stator fixe de la machine, l'élément de contact étant conçu sous la forme d'un conducteur flexible (15), le conducteur comportant une extrémité libre (34) qui peut être disposée sur une circonférence (28) de la partie rotor et une extrémité (33) fixée au dispositif de retenue, le conducteur étant dimensionnellement stable de sorte que, pour former un contact glissant électroconducteur entre une surface de contact glissant du conducteur prévue pour former le contact glissant et une surface de contact (29) sur la circonférence de la partie rotor, la surface de contact puisse être appliquée avec une force de contact, le conducteur étant conçu de sorte qu'il peut être plié en une forme d'arc entre l'extrémité libre et l'extrémité fixée, de sorte que l'extrémité libre s'étend dans la direction d'un axe de rotation (30) de la partie rotor lorsque le contact de mise à la terre est disposé dans la partie rotor.
EP20730398.3A 2020-05-20 2020-05-20 Contact de mise à la terre et procédé de dissipation de courants électriques Pending EP4154363A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2020/064138 WO2021233542A1 (fr) 2020-05-20 2020-05-20 Contact de mise à la terre et procédé de dissipation de courants électriques

Publications (1)

Publication Number Publication Date
EP4154363A1 true EP4154363A1 (fr) 2023-03-29

Family

ID=70977509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20730398.3A Pending EP4154363A1 (fr) 2020-05-20 2020-05-20 Contact de mise à la terre et procédé de dissipation de courants électriques

Country Status (5)

Country Link
US (1) US20230208257A1 (fr)
EP (1) EP4154363A1 (fr)
JP (1) JP2023531367A (fr)
CN (1) CN115668664A (fr)
WO (1) WO2021233542A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758251C3 (de) * 1977-12-27 1980-07-03 Schunk & Ebe Gmbh, 6300 Lahn-Heuchelheim Kohlebürste für elektrische Maschinen
US7193836B2 (en) 2003-03-17 2007-03-20 Illinois Tool Works Inc Grounding brush for mitigating electrical current on motor shafts
DE102005003371A1 (de) * 2005-01-24 2006-08-03 Kiersch Composite Gmbh Anordnung zum Erzeugen eines elektrischen Stromflusses durch Kohlenstofffasern
DE102015206520A1 (de) 2015-04-13 2016-10-13 Schunk Bahn- Und Industrietechnik Gmbh Ableitungseinrichtung
DE102016010926A1 (de) * 2016-03-03 2017-09-07 Kaco Gmbh + Co. Kg Wellenerdungsring
DE102016205049A1 (de) * 2016-03-24 2017-09-28 Schunk Bahn- Und Industrietechnik Gmbh Ableitungseinrichtung und Verfahren zur Ableitung elektrostatischer Ladungen
DE102017009360A1 (de) * 2017-10-06 2019-04-11 Kaco Gmbh + Co. Kg Wellenerdungsring sowie Ableitkörper für einen Wellenerdungsring
DE202018101894U1 (de) * 2018-04-09 2018-05-09 Schunk Bahn- Und Industrietechnik Gmbh Ableitungseinrichtung

Also Published As

Publication number Publication date
US20230208257A1 (en) 2023-06-29
JP2023531367A (ja) 2023-07-24
CN115668664A (zh) 2023-01-31
WO2021233542A1 (fr) 2021-11-25

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