Discharge unit, discharge arrangement and force transmission arrangement

Abstract

The invention relates to a discharge unit (128) for arrangement on a moveable force transmission element (103) which extends along a longitudinal axis, for example for arrangement on a shaft (104) the rotational axis (107) of which forms the longitudinal axis, wherein either the discharge unit (128) comprises the following: - an outer carrier element (132) and - a discharge element (150) fastened to the outer carrier element (132) and extending in the direction towards the longitudinal axis (106) or extending radially inwardly, or the discharge unit comprises the following: - an inner carrier element (218) and - a discharge element (150) fastened to the inner carrier element (218) and extending in the direction away from the longitudinal axis (106) and / or extending radially outwardly.

Description

[0001] Discharge unit, discharge arrangement and power transmission arrangement

[0002] The present invention relates to a discharge unit, which may be, for example, a sealing unit, a discharge arrangement, which may be, for example, a sealing arrangement, and a force transmission arrangement.

[0003] The present invention is based on the object of providing an efficient power transmission arrangement and components therefor with the least possible effort. In particular, the aim is to reduce the maintenance effort for systems with electric machines, e.g., the maintenance effort for fully or partially electrically powered vehicles, with the least possible effort.

[0004] The object is achieved according to the invention by the discharge unit according to the relevant independent claim.

[0005] The invention is based on the discovery that induced wave currents can lead to the premature failure of bearings, such as rolling bearings. These induced wave currents can be wave currents introduced via the frequency converter of electric motors. A diverter element can divert the currents specifically before they are dissipated via the rolling bearing.

[0006] It was shown that, especially at a high peripheral speed of more than 25 m / s, conventional discharge elements and discharge arrangements with integrated sealing function are not entirely satisfactory with regard to discharge behavior and sealing behavior.

[0007] The deflection unit according to the invention is a deflection unit for arrangement on a movable force transmission element extending along a longitudinal axis, e.g., for arrangement on a shaft whose rotational axis forms the longitudinal axis. The movable force transmission element can be a shaft. The longitudinal axis along which the movable force transmission element extends can be the rotational axis of the shaft.

[0008] The discharge unit comprises either the following: an outer support element and a discharge element fixed to the outer support element and extending in the direction of the longitudinal axis and / or radially inward.

[0009] Alternatively, the diverter unit comprises the following: an inner support element and a diverter element fixed to the inner support element and extending in the direction away from the longitudinal axis and / or radially outward.

[0010] If an element, e.g. the discharge element, is fixed to the outer or inner support element, this may mean that it is fixed directly or indirectly to the support element.

[0011] Direct attachment to the support element can, in particular, mean that at the transition from the support element to the element, e.g., the discharge element, there is physical contact between the element, e.g., the discharge element, and the support element. The support element and the further element, e.g., the discharge element, can, for example, be formed integrally, or a surface of the support element can be in physical contact with a surface of the element, e.g., the discharge element.

[0012] Indirect attachment to the support element can, in particular, mean that at least one further element, e.g., a holding element, a fixing element, and / or a separation element, is arranged between the support element and the element, e.g., the discharge element. The discharge element extending toward the longitudinal axis and / or radially inward can also extend in the axial direction. The discharge element extending away from the longitudinal axis and / or radially outward can also extend in the axial direction.

[0013] The axial direction refers in particular to a direction parallel to the longitudinal axis.

[0014] Preferably, when the diverter unit is arranged on the force transmission element, the outer support element can be positioned on an outer surface of the force transmission element such that the support element does not touch the outer surface.

[0015] Preferably, the discharge element fixed to the outer support element can be brought into electrical contact with the outer surface of the force transmission element when the discharge unit is arranged on the force transmission element.

[0016] Preferably, the inner support element can be fixed to an outer surface of the force transmission element when the discharge unit is arranged.

[0017] On a surface of the support element facing the outer surface, the support element can have at least one recess. A fixing element, which can be fixed to the outer surface of the force transmission element, can be located in the at least one recess.

[0018] The at least one recess can be at least one radially circumferential recess. The securing element can be an annular securing element, e.g., an O-ring, which can be located in the at least one annular circumferential recess. The annular securing element can simultaneously exert a static sealing effect, which can counteract the transfer of lubricant, e.g., oil, between the outer surface of the force transmission element and the inner support element if the inner support element is secured to an outer surface of the force transmission element after the arrangement of the discharge unit. The annular securing element, e.g., the O-ring, can act as a secondary static sealing element. Preferably, the discharge element secured to the inner support element can be brought into electrical contact with an inner surface of a contact element when the discharge unit is arranged on the force transmission element.

[0019] The contact element can be a component, e.g., a machine element. The component, e.g., the machine element, can have a recess. The inner surface can be an inner surface of the recess. The inner surface can preferably be a cylindrical inner surface of the recess.

[0020] The electrical contact can in particular be a sliding contact.

[0021] The term "in particular" is used in this description and the appended claims to describe possible optional and / or facultative features.

[0022] The support element, e.g. the outer or inner support element, is preferably annular.

[0023] The carrier element may have a ring portion and a disc portion.

[0024] It can be advantageous if the ring section has a smaller extent in the radial direction than in the axial direction and the disc section has a smaller extent in the axial direction, i.e. in the radial direction; and / or; the ring section is parallel to or inclined to the axis of the support element and the disc section is orthogonal or inclined to the axis of the support element, wherein, if the ring section is inclined, an inclination of the ring section to the axis of the support element is not greater than an inclination of the disc section to the axis of the support element or the disc section is orthogonal to the axis of the support element.

[0025] Extensions and inclinations of the ring portion and the disc portion can be determined in at least one profile of the support element on one side of the axis, wherein the at least one profile of the support element is a profile of the support element obtainable by an axial section.

[0026] For example, the ring section can be completely or partially hollow-cylindrical or conical. The inclination of the ring section relative to the axis of the support element can result from a completely or partially conical shape of the ring section.

[0027] For example, the disc section can be annular disc-shaped.

[0028] It may be advantageous if the disc section of the outer support element merges into the ring section at a radially outer end of the disc section.

[0029] It may be advantageous if the disc section of the inner support element merges into the ring section at a radially inner end of the disc section.

[0030] The axis of the support element coincides with the longitudinal axis when the discharge unit is arranged on the movable force transmission element.

[0031] The axis of the support element coincides with the axis of rotation when the discharge unit is arranged on the shaft.

[0032] The diverting unit can preferably comprise either the following: a delimiting element which is fixed to the outer support element and extends in the direction of the longitudinal axis and / or radially inward, which, when the diverting unit is arranged on the force transmission element, delimits a first zone of the outer surface of the force transmission element from a second zone of the outer surface of the force transmission element. The first zone of the outer surface can be, for example, a lubrication zone. The second zone of the outer surface can be, for example, a diverting contact zone. In the diverting contact zone, the diverting element can be brought into electrical contact with the outer surface of the force transmission element when the diverting unit is arranged on the force transmission element.

[0033] Alternatively, the diverting unit can preferably comprise the following: a delimiting element which is fixed to the inner support element and extends in the direction away from the longitudinal axis and / or radially outwards, and which, when the diverting unit is arranged on the force transmission element, delimits a first zone of the inner surface of a surrounding contact element from a second zone of the inner surface of the contact element. The first zone of the inner surface can be, for example, a lubrication zone. The second zone of the inner surface can be, for example, a diverting contact zone. In the diverting contact zone, the diverting element can be brought into electrical contact with the inner surface of the surrounding contact element when the diverting unit is arranged on the force transmission element.

[0034] When the deflection unit is arranged on the force transmission element, the boundary element can preferably be brought into contact either with the outer surface of the force transmission element or with the inner surface of the contact element. The term "bringable into contact" can refer in particular to physical contact. This does not preclude the possibility of physical contact with the outer surface of the force transmission element or with the inner surface of the contact element being made via a possibly present lubricant or via a possibly present lubricant layer.

[0035] The demarcation element can be or have a textile fabric.

[0036] If the deflection unit comprises the outer support element, the textile fabric can preferably extend to the outer surface of the force transmission element when the deflection unit is arranged on the force transmission element, or, if the deflection unit comprises the inner support element, to the inner surface of the surrounding contact element. The boundary element can preferably be the textile fabric.

[0037] The textile fabric can preferably be an irregular textile fabric, for example, a fleece or felt, especially a nonwoven. This can be advantageous because, in a structurally simple manner, any abrasion of the deflection element can essentially only reach the boundary element. This can help keep the abrasion away from seals, which may be arranged, for example, on rolling bearings, or from electronic components, which may be used, for example, to control a motor vehicle. Consequently, maintenance costs can be reduced, thus leading to the desired efficiency improvements.

[0038] Preferably, the boundary element can be a sealing element. The sealing element can, for example, be an annular sealing element.

[0039] The discharge unit can, for example, be a sealing unit.

[0040] The sealing unit can preferably enable a discharge effect mediated by the discharge element and a sealing effect mediated by the sealing element.

[0041] The sealing unit can in particular be a radial shaft sealing unit, e.g. a radial shaft sealing ring.

[0042] The demarcation element, e.g., the sealing element, may be a turned demarcation element, e.g., a turned sealing element. It may be obtained entirely or partially by turning.

[0043] The boundary element, e.g., the sealing element, may be a shaped boundary element, e.g., a shaped sealing element. It may be obtained entirely or partially by forming, e.g., primary forming or reshaping.

[0044] The demarcation element, e.g. the sealing element, can contain a plastic or be made of a plastic, e.g. by turning from a plastic semi-finished product or by primary forming from a plastic melt.

[0045] It may be advantageous if the sealing element, e.g. the annular sealing element, has a sealing surface.

[0046] When the diverter unit, which is, for example, the sealing unit, is arranged on the force transmission element, the sealing surface lies on the outer surface of the force transmission element. This applies in particular if the boundary element is a sealing element fixed to the outer support element and extending in the direction of the longitudinal axis and / or radially inward. The sealing surface lying on the outer surface is preferably movable relative to the outer surface, e.g., movable relative to the outer surface by rotation. The sealing contact between the sealing surface and the outer surface can be a dynamic sealing contact.

[0047] When the diverter unit, which is, for example, the sealing unit, is arranged on the force transmission element, the sealing surface lies on the inner surface of the surrounding contact element. This applies in particular if the boundary element is a sealing element fixed to the inner support element and extending away from the longitudinal axis and / or radially outward. The sealing surface lying on the inner surface is preferably movable relative to the inner surface, e.g., by rotation relative to the inner surface. The sealing contact between the sealing surface and the inner surface can be a dynamic sealing contact.

[0048] It may be advantageous if the sealing surface has a lubricant retention structure. A lubricant retention structure is understood, in particular, to be a structure that can counteract unwanted leakage of lubricant in the area of ​​dynamic sealing contact. Preferably, the lubricant retention structure can counteract unwanted leakage of lubricant in the area of ​​dynamic sealing contact at least in one direction of rotation of the power transmission element, e.g., the shaft.

[0049] The lubricant retention structure may comprise a swirl structure.

[0050] Preferably, a spiral groove may be formed in the sealing surface.

[0051] Preferably, the spiral groove may be a first spiral groove and a second spiral groove may be formed in the sealing surface.

[0052] The spiral groove can wind in one direction radially outward from the longitudinal axis. The first spiral groove can wind in a first direction radially outward from the longitudinal axis. The second spiral groove can wind radially outward from the longitudinal axis in an opposite second direction. This applies in particular when the boundary element is a sealing element fixed to the outer support element and extending in the direction of the longitudinal axis and / or radially inward. The spiral groove can wind in one direction radially inward from the longitudinal axis. The first spiral groove can wind in a first direction radially inward from the longitudinal axis. The second spiral groove can wind in an opposite second direction radially inward from the longitudinal axis. This applies in particular when the boundary element is a sealing element fixed to the inner support element and extending in the direction away from the longitudinal axis and / or radially outward.

[0053] The spiral groove may define at least one full spiral turn in one direction around the longitudinal axis.

[0054] Preferably, the first spiral groove and the second spiral groove can each define at least one full spiral turn in a first and second direction about the longitudinal axis, wherein the spiral grooves are arranged offset so that at least one turn of the first spiral groove intersects with at least one turn of the second spiral groove.

[0055] The spiral grooves can have the same pitch angle.

[0056] The spiral grooves can have different pitch angles.

[0057] The intersections between the first and second spiral grooves may define a plurality of intersection points arranged in a plane in which the longitudinal axis lies.

[0058] The spiral grooves may have the same contact angle relative to a circle centered on the longitudinal axis, which is less than 1 degree.

[0059] The first and second spiral grooves may have connected ends, whereby the spiral grooves form a continuous channel.

[0060] The radial distance between the turns of each spiral groove may be at least twice as large, e.g. at least ten times as large as the width of each spiral groove.

[0061] The width of each spiral groove can preferably be no more than 0.05 mm. It has been shown that, in conjunction with the invention, the at least one spiral groove can further reduce the maintenance effort for systems with electrical machines, e.g., the maintenance effort for fully or partially electrically powered vehicles.

[0062] This is probably due to the fact that electrical contact in the transition from the discharge element to the outer surface or inner surface can be maintained particularly reliably if the spiral groove counteracts the transfer of lubricant into this area.

[0063] Preferably, the discharge element is ring-shaped.

[0064] Preferably, the discharge element can comprise at least one discharge contact region extending in the direction of the longitudinal axis and / or radially inward, which can be brought into electrical contact with the outer surface of the force transmission element when the discharge unit is arranged on the force transmission element. Alternatively, the discharge element can preferably comprise at least one discharge contact region extending in the direction away from the longitudinal axis and / or radially outward, which can be brought into electrical contact with the inner surface of the contact element when the discharge unit is arranged on the contact element.

[0065] When the deflection unit is arranged on the force transmission element, the deflection element, in particular the at least one deflection contact region of the deflection element, can preferably be reshaped, elastically deformed, and / or prestressed by a movement parallel to a plane, e.g., the prestressing plane. Alternatively, when the deflection unit is arranged on the contact element, the deflection element, in particular the at least one deflection contact region of the deflection element, can preferably be reshaped, elastically deformed, and / or prestressed by a movement parallel to a plane, e.g., the prestressing plane.

[0066] Preferably, the longitudinal axis can lie in the plane, e.g., in the prestressing plane, or intersect the plane, e.g., the prestressing plane, at an angle of no more than 15°, in particular no more than 5°. Preferably, the longitudinal axis can intersect the plane, e.g., the prestressing plane, at an angle of 75° to 90°, in particular 85° to 90°.

[0067] Preferably, the discharge element can comprise a plurality of spaced-apart discharge contact regions. When the discharge unit is arranged on the force transmission element, the plurality of spaced-apart discharge contact regions of the discharge element can preferably be brought into electrically conductive contact with the outer surface of the force transmission element or with the inner surface of the contact element.

[0068] It can be advantageous if the discharge element extends further inwards in the discharge contact region or in the discharge contact regions in the direction of the longitudinal axis and / or radially inwards than in a region adjacent to a discharge contact region or than in an intermediate region of the discharge element lying between several discharge contact regions, if the discharge element extends in the direction of the longitudinal axis and / or radially inwards. At least one discharger of the discharge element can extend to each discharge contact region, with each discharger occupying a discharge area. The discharge area of ​​each discharger is preferably 1% to 10% of a recess area surrounded by the discharge element, into which the dischargers protrude. A preferred discharge element can be described by two circles whose centers coincide. An inner circle has the radius r1. An outer circle has the radius r2.The radius r1 corresponds to the distance of the discharge contact areas from the center point. The radius r2 is selected such that the area of ​​the outer circle corresponds to the recess area. The ratio r1 to r2 is preferably 0.2 to 0.99, particularly preferably 0.25 to 0.97, e.g., 0.3 to 0.95. The discharge areas, the recess area, the circles, and their radii r1 and r2 are preferably determined in a basic state, e.g., a flat basic state, in which the discharge element is present when it is not arranged on a force transmission element and is also not reshaped, elastically deformed, and / or prestressed by means of an inclined alignment section.

[0069] It can be advantageous if the discharge element extends further outwards in the discharge contact region or in the discharge contact regions in the direction away from the longitudinal axis and / or radially outwards than in a region adjacent to a discharge contact region or than in an intermediate region of the discharge element lying between a plurality of discharge contact regions, if the discharge element extends away from the longitudinal axis and / or radially outwards. It can be particularly advantageous if the discharge element extends further inwards in the discharge contact regions in the direction towards the longitudinal axis and / or radially inwards than in the intermediate regions of the discharge element lying between these discharge contact regions, if the discharge element extends towards the longitudinal axis and / or radially inwards.

[0070] It may be particularly advantageous if the discharge element extends further outwards in the discharge contact areas in the direction away from the longitudinal axis and / or radially outwards than in the intermediate areas of the discharge element lying between these discharge contact areas, if the discharge element extends in the direction away from the longitudinal axis and / or radially outwards.

[0071] The discharge element can preferably comprise two to thirty spaced-apart discharge contact regions. The discharge element can particularly preferably comprise two to twenty spaced-apart discharge contact regions. For example, the discharge element can comprise two to twelve spaced-apart discharge contact regions. It can be particularly advantageous if the discharge element comprises three to eight spaced-apart discharge contact regions.

[0072] It may be advantageous if the diverting unit comprises either the following: the outer support element, the diverting element fixed to the outer support element, extending in the direction of the longitudinal axis and / or radially inwards, and the delimiting element fixed to the outer support element, extending in the direction of the longitudinal axis and / or radially inwards, which, when the diverting unit is arranged on the force transmission element, delimits the first zone of the outer surface of the force transmission element from the second zone of the outer surface of the force transmission element, wherein it may be advantageous if the delimiting element is or comprises the textile fabric, wherein it may be advantageous if the diverting element comprises a plurality of spaced-apart diverting contact areas,wherein the plurality of spaced-apart diverting contact regions of the diverting element can be brought into electrically conductive contact with the outer surface of the force transmission element when the diverting unit is arranged on the force transmission element; or the diverting unit comprises the following: the inner support element, the diverting element fixed to the inner support element, extending in the direction away from the longitudinal axis and / or radially outward, and the delimiting element fixed to the inner support element, extending in the direction away from the longitudinal axis and / or radially outward, which delimits the first zone of the inner surface of the surrounding contact element from the second zone of the inner surface of the contact element when the diverting unit is arranged on the force transmission element, wherein it may be advantageous if the delimiting element is or comprises the textile fabric, wherein it may be advantageousif the discharge element comprises a plurality of spaced-apart discharge contact regions, wherein the plurality of spaced-apart discharge contact regions of the discharge element can be brought into electrically conductive contact with the inner surface of the contact element when the discharge unit is arranged on the force transmission element.

[0073] It may be advantageous if the discharge element is a first discharge element and the boundary element or a further discharge element comprised by the discharge unit is a second discharge element.

[0074] The second discharge element and the first discharge element can preferably extend in the same direction.

[0075] Preferably, the first and second discharge elements can each be a discharge element extending toward the longitudinal axis and / or radially inward. When the discharge unit is arranged on the force transmission element, the first and second discharge elements can preferably be brought into electrical contact with the outer surface of the force transmission element.

[0076] Preferably, the first and the second discharge element can each be a discharge element extending in the direction away from the longitudinal axis and / or radially outwards.

[0077] When the discharge unit is arranged on the force transmission element, the first and second discharge elements can preferably be brought into electrical contact with the inner surface of the surrounding contact element. The electrical contact of the first and second discharge elements with the outer surface can preferably comprise direct electrical contact of the first discharge element with the outer surface and direct electrical contact of the second discharge element with the outer surface.

[0078] The electrical contact of the first and second discharge elements to the inner surface may preferably comprise a direct electrical contact of the first discharge element to the inner surface and a direct electrical contact of the second discharge element to the inner surface.

[0079] It may be advantageous if a discharge element, e.g. the second discharge element, differs from the first discharge element in at least one of the following features: electrical conductivity,

[0080] - Contact force on the inner surface or on the outer surface,

[0081] - Composition, wherein the second dissipating element and / or the first dissipating element may preferably be or comprise a composite element,

[0082] Form.

[0083] It is preferred if the second conducting element and the first conducting element are each a composite element or each comprise a composite element and the electrical conductivity, the contact force on the inner surface or on the outer surface, the compositions of the two composite elements and / or the shape of the two composite elements differ.

[0084] The use of at least two different discharge elements can offer significant technical advantages. For example, by selecting the specified features, one of the discharge elements can be designed to ensure reliable discharge under one operating condition (e.g., particularly high shaft speed, lack of lubricant, and / or particularly high temperature), while the other discharge element can be designed to ensure reliable discharge under another operating condition (e.g., particularly low shaft speed, excess lubricant, and / or particularly low temperature). Thus, stresses that build up between components can always be reliably relieved, largely independent of the operating condition. Bearing damage caused by electrical erosion can be minimized or almost entirely avoided.

[0085] It may be advantageous if the at least one discharge contact region of the first discharge element is at least a first discharge contact region and the second discharge element comprises at least a second discharge contact region, wherein the first and the second discharge contact region both extend either in the direction towards the longitudinal axis and / or radially inwards or in the direction away from the longitudinal axis and / or radially outwards.

[0086] It may be particularly advantageous if the plurality of discharge contact regions of the first discharge element comprise a plurality of first discharge contact regions, and the second discharge element comprises a plurality of second discharge contact regions. Preferably, the first and second discharge contact regions can all extend toward the longitudinal axis and / or radially inward, or in the direction away from the longitudinal axis and / or radially outward.

[0087] Advantageously, at least one intermediate region of a discharge element can at least partially overlap with a discharge contact region of another discharge element.

[0088] Advantageously, at least a first intermediate region of the first discharge element can overlap with a discharge contact region of the second discharge element, e.g. with the second discharge contact region.

[0089] Preferably, several intermediate regions of a discharge element can at least partially overlap with one of several contact regions of a further discharge element.

[0090] Said overlap can preferably be an overlap observable when viewed along the longitudinal axis. It may be advantageous if the discharge unit comprises a pressing element with which at least one discharge element of the discharge unit, e.g., a discharge contact area of ​​the discharge element, can be pressed onto the outer surface of the force transmission element or onto the inner surface of the contact element when the discharge unit is arranged on the force transmission element.

[0091] In particular, with the pressure element, an electrical contact of the discharge element to the outer surface or to the inner surface can be reinforced.

[0092] The pressing element can be fixed to the support element.

[0093] The pressing element may preferably comprise a spring element or a plastic element.

[0094] The spring element can, for example, be a spring plate.

[0095] The plastic element may preferably comprise a polymer layer, e.g., a polymer film or a polymer plate.

[0096] Depending on the application, all polymers that can be provided in the form of a film can be suitable as polymer films.

[0097] The temperature resistance of the plastic element may preferably be at least 150 °C.

[0098] The polymer layer may preferably contain or be formed from a polymer containing keto groups. The polymer containing keto groups may, for example, comprise a polyetheretherketone (PEEK), a polyetherketone (PEK), and / or a polyketone (PK).

[0099] The polymer layer may contain or be formed from elastomers, e.g., FKM, NBR, or EPDM. The polymer layer may contain or be formed from at least one thermoset, preferably a thermoset-containing film, e.g., TESA HAF 8400 adhesive film.

[0100] The pressure element can be present in a layered composite with the or with at least one discharge element.

[0101] The pressure element and the discharge element can be in the form of a composite film.

[0102] The pressing element may preferably be an annular pressing element.

[0103] A contact projection of the contact element can extend to a discharge contact area of ​​the discharge element.

[0104] It may be advantageous if a contact pressure that can be measured orthogonally to the outer surface of the force transmission element and with which a discharge element can be held in electrical contact with the outer surface of the force transmission element when the discharge unit is arranged on the force transmission element reaches at least 15 mN, preferably 15 mN to 20 N, particularly preferably 22 mN to 14 N, if a smallest inner diameter of the discharge element is increased by one millimeter starting from a non-prestressed basic state of the discharge element when the discharge unit is arranged on the force transmission element.

[0105] Alternatively, a contact pressure force that can be measured orthogonally to the inner surface of the contact element and with which a discharge element can be held in electrical contact with the inner surface of the contact element when the discharge unit is arranged on the contact element can advantageously reach at least 10 mN, preferably 10 mN to 20 N, particularly preferably 15 mN to 14 N, if a largest outer diameter of the discharge element is reduced by one millimeter starting from a non-prestressed basic state of the discharge element when the discharge unit is arranged on the contact element.

[0106] The discharge unit may have an inclined alignment section.

[0107] It may be advantageous if at least one discharge element and / or at least one boundary element and / or at least one sealing element is reshaped, elastically deformed and / or prestressed by means of an obliquely extending alignment section of the discharge unit.

[0108] When reference is made herein to an obliquely extending alignment section, this preferably means a truncated cone-shaped alignment section.

[0109] The obliquely extending alignment section can serve for forming, elastically deforming and / or prestressing at least one discharge element.

[0110] The obliquely extending alignment section can serve for forming, elastically deforming and / or prestressing at least one boundary element.

[0111] The obliquely extending alignment section can serve for forming, elastically deforming and / or prestressing the at least one sealing element.

[0112] It is preferred if the at least one diverting element and / or the at least one boundary element and / or the at least one sealing element is formed, elastically deformed and / or prestressed by means of an obliquely extending alignment section of the diverting unit and by means of the pressing element.

[0113] It is preferred if the at least one diverting element and / or the at least one boundary element and / or the at least one sealing element is formed, elastically deformed and / or prestressed between an obliquely extending alignment section and the pressing element.

[0114] It may be advantageous if at least one dissipating element is a composite element or comprises a composite element, wherein the composite element comprises a dissipating material and a reinforcing material.

[0115] Advantageously, in one, several, or every composite element described herein, the conductive material and the reinforcing material can be bonded to one another in any desired manner. "Composite" means "composite," without making any statement about the type of composite. Depending on the geometry of the composite, composite materials can be considered, for example, the following: particle composites, also referred to as particle composites or dispersion materials; fiber composites with short fibers, long fibers, or continuous fibers; layered composites, also referred to as laminates, e.g., in sandwich form; penetration composites; and structural composites. The components of a composite material can themselves be composite materials. In principle, all conceivable forms of bonding of conductive material and reinforcing material are possible for one or every composite element described herein.

[0116] Any sufficiently electrically conductive material capable of achieving a continuous charge balance between device elements is suitable as a dissipative material. The dissipative material can, in particular, be an electrically conductive metal or an electrically conductive non-metal, e.g., a carbon material.

[0117] Any material that can be used to strengthen the conductive material is suitable as a reinforcement material. For example, the reinforcement material can make it difficult to bend or deform the conductive material, especially if the conductive material comprises one or more thin metal strands. The reinforcement material can, for example, make it difficult for the conductive material to break, especially if the conductive material is a carbon material, such as graphite.

[0118] Advantageously, the conductive material and the reinforcing material together can form a particulate composite material. For example, the conductive material can be a particulate, e.g., powdered and / or particulate, conductive material distributed entirely or partially within the reinforcing material. In particular, the reinforcing material can impart shape and strength to the particulate conductive material by embedding at least a portion of the particles or all of the particles of the particulate conductive material in the reinforcing material. The reinforcing material can form a matrix material of the particulate composite material.

[0119] The reinforcement material can, for example, be a plastic reinforcement material.

[0120] The plastic reinforcement material can be, for example, a duromer material, an elastomer material or a thermoplastic material.

[0121] The thermoset material can preferably contain a resin, e.g., an epoxy resin or a phenolic resin. It is also possible for the thermoset material to contain a hybrid resin system. It may be particularly preferred if the plastic reinforcement material is non-meltable at a temperature of up to 180°C, preferably up to 210°C, e.g., up to 230°C.

[0122] If the plastic reinforcement material is a thermosetting material or an elastomer material, the plastic reinforcement material is in any case non-meltable and thus non-meltable even at a temperature of up to 180 °C, preferably up to 210 °C, e.g. up to 230 °C.

[0123] If the plastic reinforcement material is a thermoplastic material, it may also be non-melting at temperatures up to 180 °C, preferably up to 210 °C, e.g., up to 230 °C. Thermoplastic materials with correspondingly high melting points are familiar to those skilled in the art.

[0124] The plastic reinforcement material can preferably contain at least one polymer containing keto groups, e.g. a polyetheretherketone (PEEK), a polyetherketone (PEK) and / or a polyketone (PK); and / or a polymer containing imido groups, e.g. a polyamideimide (PAI), a polyetherimide (PEI) and / or a polyimide (PI); and / or a polymer containing amide groups, e.g. a polyphthalamide (PPA) and / or a polyamide (PA); and / or a polymer containing sulfide bridges, e.g. a polyphenylene sulfide (PPS), and / or; a polymer containing sulfone groups, e.g. a polysulfone (PSU); and / or a fluoropolymer, preferably a melt-processable fluoropolymer, e.g. a melt-processable perfluoroalkoxy polymer (PFA); and / or a liquid-crystalline polyester.

[0125] Particularly preferably, the plastic reinforcement material can contain at least one polymer containing keto groups, e.g. a polyetheretherketone (PEEK), a polyetherketone (PEK) and / or a polyketone (PK); and / or a polymer containing imido groups, e.g. a polyamideimide (PAI), a polyetherimide (PEI) and / or a polyimide (PI); and / or a polymer containing amide groups, e.g. a polyphthalamide (PPA) and / or a polyamide (PA); and / or a polymer containing sulfide bridges, e.g. a polyphenylene sulfide (PPS), and / or; a polymer containing sulfone groups, e.g. a polysulfone (PSU); and / or a liquid-crystalline polyester.

[0126] Preferably, the plastic reinforcement material may contain a non-melt-processable polymer, preferably a non-melt-processable fluoropolymer, e.g., polytetrafluoroethylene (PTFE).

[0127] Common abbreviations for the polymers mentioned are given in brackets.

[0128] The plastic reinforcement material may contain a plastic matrix material and a filler different from the conductive material, wherein, for example, one or more of the aforementioned polymers or resins may form the plastic matrix material.

[0129] The term filler refers in particular to all materials dispersed as particles or fibers in the plastic matrix material which do not form the conductive material.

[0130] It may be advantageous if the filler contains a friction-reducing material, which can preferably be selected from boron nitride, molybdenum disulfide, non-ferrous metals, e.g., aluminum, copper, lead, indium, or tin, ceramics, e.g., titanium nitride, and plastics, e.g., PTFE; and / or a wear-reducing polymeric material, wherein the wear-reducing polymeric material is preferably selected from an aramid, a polyimide (PI), a polyphenylene sulfone (PPSII), a polyetheretherketone (PEEK), an ultra-high molecular weight polyethylene (PE-UHMW), and a fully aromatic polyester.

[0131] Common abbreviations for the polymers mentioned are given in parentheses. The PPSII can be, for example, a PPSII sold under the name Ceramer. The fully aromatic polyester can be, for example, a polyester sold under the name Sumica Super or Ekonol.

[0132] Certain conductive materials, especially graphite particles, can have a friction-reducing effect. Consequently, the addition of another friction-reducing material may be unnecessary.

[0133] Advantageously, the filler may contain fibers, wherein the fibers may preferably be mineral fibers and / or polymer fibers and / or carbon fibers, wherein the mineral fibers may preferably be glass fibers and the polymer fibers may preferably be amide fibers or partially oxidized polyacrylonitrile fibers, wherein the amide fibers may preferably be aramid fibers.

[0134] Advantageously, the filler may contain a mineral material. For example, the mineral material may contain wollastonite and / or mica.

[0135] It may be advantageous if a mass fraction of the conductive material of the composite element or the particle composite material is 25 to 55 wt.%, preferably 30 to 50 wt.%, e.g. 35 to 45 wt.%.

[0136] It may be advantageous if graphite particles serve as the dissipating material or form a component of the dissipating material and a mass fraction of the composite element or the particle composite material of graphite particles is 25 to 55 wt.%, preferably 30 to 50 wt.%, e.g. 35 to 45 wt.%.

[0137] It may be particularly advantageous if the dissipative material is a metal wool and the reinforcing material is a plastic and / or the plastic reinforcing material.

[0138] The metal wool may be arranged in the plastic in such a way that the metal wool is not completely surrounded by the plastic and / or the plastic reinforcing material.

[0139] The metal wool preferably extends at two ends of the composite element to the surfaces of the composite element. This can increase the electrical conductivity of the composite element. Preferably, the metal wool is compacted in at least one direction, and the plastic maintains the compacted metal wool in a compacted state.

[0140] Preferably, the plastic can be present as a plastic matrix and the metal wool can be embedded in the plastic matrix.

[0141] The plastic may advantageously contain a resin and / or a fluoropolymer.

[0142] The resin can be a partially or fully synthetic resin. The resin can preferably be a phenolic resin, an epoxy resin (e.g., SKresin 3210), a polyurethane resin, a silicone resin, a vinyl ester resin, or an acrylic resin. It can, for example, be a phenolic resin. The resin preferably contains no fluoropolymers and / or no fluoroorganic substances.

[0143] The term "fluoropolymer" refers to a polymer containing fluorine atoms bonded to carbon atoms. The fluoropolymer can preferably be a polytetrafluoroethylene (PTFE), a perfluoroalkoxy polymer (PFA), a polyvinyl fluoride (PVF), a polyvinylidene fluoride (PVDF), a polychlorotrifluoroethylene (PCTFE), an ethylene-tetrafluoroethylene (ETFE), a perfluoro(ethylene-propylene) (FEP), or a fluororubber, e.g., a PTFE or a PFA.

[0144] It may be advantageous if the conductive material comprises or is a carbon material. The carbon material can be graphite, graphene, graphene oxide, or a carbon fiber, e.g., graphite. The graphite can contain natural graphite, synthetic graphite, and / or expanded graphite.

[0145] It may be advantageous if the dissipative material, e.g. the carbon material, is dispersed in the reinforcing material, e.g. plastic reinforcing material.

[0146] The carbon material, e.g., the graphite, can be arranged on the reinforcing material, wherein the reinforcing material can preferably be a metallic reinforcing material, e.g., a metal mesh, a metal wool, or a metal foil.

[0147] The carbon material, e.g., graphite, can be present in a layered composite with the reinforcement material. The carbon material can comprise a graphite foil. The graphite foil can be present in a layered composite with the reinforcement material.

[0148] The composite element may be obtained by punching from a precursor element, wherein the precursor element comprises the conductive material and the reinforcing material.

[0149] The composite element can be obtained by pressing, e.g. powder pressing, from a precursor material, wherein the precursor material comprises the conductive material and the reinforcing material or a precursor material of the reinforcing material.

[0150] Preferably, the composite element can be strand-shaped or band-shaped.

[0151] The composite element can be, for example, a composite spring element. Preferably, the composite spring element can be strand-shaped or band-shaped, in particular band-shaped.

[0152] This can be advantageous because, when used as a contact element of a discharge element, the composite spring element can rest against the surface contact zone of the device element in a prestressed state. This can promote reliable electrical contact. The strip or strand form is ideal for this purpose.

[0153] It may be advantageous if the reinforcement material comprises two plastic layers and the conductive material extends between the two plastic layers. The plastic layers can be adhesive films. The adhesive films can preferably be thermosetting adhesive films. The conductive material extending between the plastic layers can preferably be a metallic conductive material. The metallic conductive material can preferably comprise elongated metal elements, e.g., wires or strands. Particularly preferably, the conductive material extending between the plastic layers can be metallic wool, e.g., copper wool, wherein the metallic wool, e.g., copper wool, can be compressed orthogonally to the two layer planes of the two plastic layers.

[0154] It may be advantageous if the discharge element contains an electrically conductive polymer and / or is made of an electrically conductive polymer.

[0155] The electrically conductive polymer can be, for example, a polyaniline (PANI). In particular, if the at least one discharge element is the composite element or comprises the composite element, the discharge unit can comprise the contact element, with which the at least one discharge element of the discharge unit, e.g., a discharge contact region of the discharge element, can be pressed onto the aforementioned outer surface or the aforementioned inner surface when the discharge unit is arranged on the force transmission element.

[0156] In particular, it was shown that in composite elements with conductive materials extending between plastic layers, contact forces can decrease and that this can be compensated with minimal effort by using one or more of the contact elements described herein.

[0157] It may be advantageous if the diverting unit comprises the following: the boundary element extending in the direction of the longitudinal axis and / or radially inwards, which represents a first boundary element, and a second boundary element, which also extends in the direction of the longitudinal axis and / or radially inwards, or if the diverting unit comprises the following: the boundary element extending in the direction away from the longitudinal axis and / or radially outwards, which represents a first boundary element, and a second boundary element, which also extends in the direction away from the longitudinal axis and / or radially outwards,

[0158] The second delimiting element, which also extends in the direction of the longitudinal axis and / or radially inward, can, when the diverting unit is arranged on the force transmission element, delimit the second zone of the outer surface of the force transmission element, which can be, for example, the diverting contact zone, from a third zone of the outer surface of the force transmission element.

[0159] The second boundary element, which also extends away from the longitudinal axis and / or radially outward, can, when the deflection unit is arranged on the force transmission element, separate the second zone of the inner surface of the contact element, which can be, for example, the deflection contact zone, from a third zone of the inner surface of the contact element. It can be advantageous if the two boundary elements, the first boundary element and the second boundary element, are sealing elements.

[0160] It may be advantageous if the outer support element has a receiving zone. The receiving zone can preferably extend into a receiving recess. The receiving recess can be a receiving recess extending radially outward into the outer support element.

[0161] The diverting unit can comprise a fixing element that can be at least partially received in the receiving recess. The fixing element can be at least partially received in the receiving recess. By means of the fixing element, at least the diverting element, e.g., at least the first diverting element, and / or at least the boundary element, e.g., at least the first boundary element, and / or at least the sealing element, e.g., at least the first sealing element, can be fixed to the outer support element.

[0162] The diverter unit may comprise a retaining element. The retaining element may preferably be arranged on the boundary element, e.g., a sealing element. It may be particularly advantageous if the retaining element is arranged between the fixing element and the boundary element.

[0163] The retaining element can preferably develop a static sealing effect and act as a secondary static sealing element.

[0164] The holding element can preferably counteract a transfer of lubricant from a lubrication zone through the receiving zone into the discharge contact zone.

[0165] The discharge unit may comprise a separation element.

[0166] A separation element, e.g., the separation element comprised by the discharge unit, can be arranged between the discharge element, e.g., the first discharge element, and the boundary element, e.g., the first boundary element. The separation element can be arranged between a portion of the boundary element secured to the support element and a portion of the discharge element secured to the support element. The separation element can be arranged between a portion of the boundary element secured to the outer support element and a portion of the discharge element secured to the outer support element.

[0167] The diverting elements, boundary elements, sealing elements, and separation elements described herein may be components that are connected to one another by force-locking. They may be pressed directly or indirectly against one another with the fixing element in the receiving recess of the outer support element, thus being connected to one another by force-locking.

[0168] The separation element can separate the diverting element, e.g., the first diverting element and / or the second diverting element, from the demarcation element, e.g., from the first and / or second demarcation element.

[0169] The separation element can separate the discharge element, e.g., the first discharge element and / or the second discharge element, from the sealing element, e.g., from the first and / or the second sealing element.

[0170] The separation element may have an obliquely extending alignment section, wherein the alignment section of the separation element may preferably be a sealing element alignment section with which the sealing element, e.g. the first and / or the second sealing element, is formed, elastically deformed and / or prestressed.

[0171] The separation element may have a separation section. The alignment section of the separation element, e.g., the sealing element alignment section, may preferably extend obliquely from the separation section.

[0172] The separation section can preferably be arranged radially further outward than the alignment section, e.g., than the sealing element alignment section.

[0173] At least a portion of a sealing element alignment section can abut a surface of a sealing element, whereby the sealing element can be reshaped, elastically deformed, and / or prestressed. Preferably, at least a portion of a sealing element alignment section can extend at a distance from the deflection element toward the outer surface of the force transmission element or toward the inner surface of the contact element.

[0174] The separation element can be multi-part. It can have at least one first separation component and at least one second separation component.

[0175] It may be advantageous if the first separation component has the alignment section, e.g. the sealing element alignment section.

[0176] The first separation component, which has the alignment section, e.g., the sealing element alignment section, may be a deep-drawn separation component obtained by deep-drawing.

[0177] A material thickness of the first separation component in the region of the alignment section, e.g., the sealing element alignment section, can preferably be 50% to 150% of a material thickness in the region of a radial extension section of the first separation component adjoining the alignment section, e.g., the sealing element alignment section.

[0178] It may be advantageous if a material thickness of the second separation component is greater, preferably at least 60% greater, particularly preferably at least 110% greater, e.g. at least 225% greater, than a material thickness of the first separation component.

[0179] It may be advantageous if a material thickness of the second separation component measurable in the direction of the longitudinal axis is greater, preferably at least 60% greater, particularly preferably at least 110% greater, e.g. at least 225% greater, than a material thickness of the first separation component measurable in the direction of the longitudinal axis.

[0180] It may be advantageous if a smallest inner diameter of the second separation component is larger than a smallest inner diameter of the alignment section, e.g., the sealing element alignment section. The separation element may have a separation section formed radially outside the alignment section, e.g., the sealing element alignment section.

[0181] The separation section can be formed by the second separation component and the radial extension section of the first separation component.

[0182] The separation element, the first separation component and / or the second separation component can be manufactured by metal powder injection molding.

[0183] The described elements, e.g. diverting elements, boundary elements, sealing elements and / or separation elements, or a part of the described elements can represent regions of a body.

[0184] Preferably, the discharge element and the boundary element can extend from an output zone of the discharge unit, wherein it is preferred if at least a part of the discharge element, at least a part of the boundary element and at least a part of the output zone are formed by an electrically conductive body containing at least one discharge material.

[0185] The body can, for example, act as the support element or, for example, be arranged on the support element.

[0186] For example, at least part of the second boundary element may be formed by the body.

[0187] Advantageously, the body may be a composite body comprising a conductive material and a connecting material, wherein it may be preferred if the conductive material is embedded in the connecting material.

[0188] The connecting material may, for example, be a reinforcing material described herein in connection with the composite element.

[0189] The connecting material can form a matrix in which the conductive material is embedded. This object is achieved by a conductive arrangement according to the invention according to the relevant independent claim.

[0190] The discharge arrangement can, for example, be a sealing arrangement.

[0191] The diverting arrangement comprises: a movable force transmission element which extends along a longitudinal axis, e.g. a shaft whose axis of rotation forms the longitudinal axis, and / or a contact element, a diverting element which is in electrical contact, e.g. in sliding contact, with an outer surface of the force transmission element or with an inner surface of the contact element, and a demarcation element which demarcates a first zone of the outer surface of the force transmission element from a second zone of the outer surface of the force transmission element or demarcates a first zone of the inner surface of the contact element from a second zone of the inner surface of the contact element, wherein the first zone can be, e.g. a lubrication zone and the second zone can be, e.g. a diverting contact zone.

[0192] The boundary element encompassed by the diverter arrangement can be a sealing element.

[0193] Preferably, the diverting arrangement, e.g., the sealing arrangement, can comprise the movable force-transmitting element and the contact element. The diverting element can be arranged between the outer surface of the force-transmitting element and the inner surface of the contact element.

[0194] The discharge unit comprised by the discharge arrangement, e.g., by the sealing arrangement, may be a discharge unit according to the invention described herein, e.g., a sealing unit according to the invention described herein.

[0195] Preferably, the discharge arrangement, e.g., the sealing arrangement, can comprise a discharge unit according to the invention as described herein, e.g., a sealing unit according to the invention as described herein, wherein the discharge unit, e.g., the sealing unit, comprises the discharge element in electrical contact, e.g., sliding contact, with the outer surface or with the inner surface, and wherein the discharge unit, e.g., the sealing unit, preferably comprises the boundary element that delimits the first zone from the second zone.

[0196] The diverting arrangement is preferably a diverting arrangement, wherein a contact pressure force that can be measured orthogonally to the outer surface of the force transmission element and with which the diverting element is held in electrical contact with the outer surface of the force transmission element is at least 15 mN, preferably 15 mN to 20 N, particularly preferably 22 mN to 14 N, or a contact pressure force that can be measured orthogonally to the inner surface of the contact element and with which a diverting element is held in electrical contact with the inner surface of the contact element is at least 10 mN, preferably 10 mN to 20 N, particularly preferably 15 mN to 14 N.

[0197] The strengths specified for the contact forces mentioned refer to the stationary state of the discharge arrangement in which the force transmission element is not moved.

[0198] A contact force measurable orthogonally to the inner surface of the contact element can increase with a rotation of the force transmission element, since the contact force can be amplified by centrifugal forces.

[0199] The contact force, which can be measured orthogonally to the outer surface of the force transmission element and with which the discharge element is held in electrical contact with the outer surface of the force transmission element, can preferably be 15 mN to 20 N, particularly preferably 22 mN to 14 N.

[0200] The contact pressure force, which can be measured orthogonally to the inner surface of the contact element and with which a discharge element is held in electrical contact with the inner surface of the contact element, can preferably be 10 mN to 20 N, particularly preferably

[0201] 15 mN to 14 N.

[0202] The contact pressure can be measured, for example, by applying a force opposite to the

[0203] The counterforce acting on the contact pressure is increased until the discharge element lifts off the outer or inner surface. The counterforce that must be built up until the discharge element lifts off the outer or inner surface is preferably considered the contact pressure.

[0204] Preferably, the discharge element, in particular at least one discharge contact region of the discharge element, which is in electrical contact, e.g., in sliding contact, with the outer surface or with the inner surface, can be reshaped, elastically deformed and / or prestressed by a movement parallel to a plane, e.g., prestressing plane.

[0205] Preferably, the longitudinal axis of the force transmission element can lie in the plane, e.g. in the prestressing plane, or can intersect the plane, e.g. the prestressing plane, at an angle of at most 15°, in particular at most 5°.

[0206] Preferably, the longitudinal axis of the force transmission element can intersect the plane, e.g., the prestressing plane, at an angle of 75° to 90°, in particular 85° to 90°.

[0207] The object is achieved by a force transmission arrangement according to the invention according to the relevant independent claim.

[0208] The power transmission arrangement can in particular be a power transmission arrangement for an electrical machine.

[0209] The force transmission arrangement comprises the following: a movable force transmission element which extends along a longitudinal axis, wherein the force transmission element is preferably a shaft whose axis of rotation forms the longitudinal axis, a bearing in which the movable force transmission element is mounted movably, in particular rotatably and / or translatably, e.g. rotatably, a discharge element which is in electrical contact, e.g. in sliding contact, with a surface, with an outer surface of the force transmission element or with an inner surface of a contact element, and a delimiting element which delimits a first zone in which the bearing is arranged from a second zone in which the discharge element is in electrical contact, e.g. in sliding contact, with the surface.Preferably, the diverting element comprised by the force transmission arrangement can be arranged between the outer surface of the force transmission element and the inner surface of the contact element.

[0210] The force transmission arrangement may comprise the contact element.

[0211] The contact element can be a component, e.g. a machine element.

[0212] The bearing can preferably be a rolling bearing.

[0213] The movable force transmission element can be rotatably mounted in the rolling bearing, wherein the movable force transmission element is preferably the shaft.

[0214] When the discharge element is in electrical contact with an inner surface of the contact element, the discharge element may preferably extend from an inner support element to the inner surface of the contact element.

[0215] The inner support element can be fixed on the outer surface of the force transmission element.

[0216] When the diverting element is in electrical contact with the outer surface of the force transmission element, the diverting element may preferably extend from an outer support element to the outer surface of the force transmission element.

[0217] The outer carrier element can preferably be fixed to an inner surface of the contact element.

[0218] Preferably, the force transmission arrangement may comprise a discharge unit according to the invention as described herein, e.g., a sealing unit according to the invention as described herein, and / or a discharge arrangement according to the invention as described herein, e.g., a sealing arrangement according to the invention as described herein.

[0219] The discharge unit comprised by the force transmission arrangement, e.g. the sealing unit comprised by the force transmission arrangement, can preferably comprise the discharge element in electrical contact, e.g. in sliding contact, with the outer surface or with the inner surface.

[0220] The diverting unit comprised by the force transmission arrangement, e.g. the sealing unit comprised by the force transmission arrangement, may preferably comprise the demarcation element which demarcates the first zone from the second zone.

[0221] Features described in connection with an object according to the invention can of course also represent features of another object described herein. Objects according to the invention include, in particular, the discharge unit, the sealing unit, the discharge arrangement, the sealing arrangement, and the force transmission arrangement.

[0222] Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

[0223] The drawings show:

[0224] Fig. 1 : a schematic sectional view of a power transmission arrangement;

[0225] Fig. 2: an enlarged section of Fig. 1;

[0226] Fig. 3: an enlarged section of Fig. 1;

[0227] Fig. 4: a first discharge element;

[0228] Fig. 5: a second discharge element;

[0229] Fig. 6: the first and second discharge elements from Figs. 4 and 5;

[0230] Fig. 7: a schematic sectional view of a power transmission arrangement;

[0231] Fig. 8: a schematic sectional view of a power transmission arrangement; Fig. 9: a schematic sectional view of a power transmission arrangement;

[0232] Fig. 10: a sealing unit with part of the sealing unit removed for illustration purposes;

[0233] Fig. 11 : a discharge unit, with part of the discharge unit removed for illustration purposes;

[0234] Fig. 12: a perspective view of a section through a discharge unit;

[0235] Fig. 13: a schematic sectional view of a power transmission arrangement;

[0236] Fig. 14: a perspective view of a section through a discharge unit;

[0237] Fig. 15: a schematic sectional view of a power transmission arrangement;

[0238] Fig. 16: a schematic sectional view of a power transmission arrangement;

[0239] Fig. 17: a schematic sectional view of a power transmission arrangement;

[0240] Fig. 18: a schematic sectional view of a power transmission arrangement;

[0241] Fig. 19: three different representations of a discharge element;

[0242] Fig. 20: a further representation of the discharge element shown in Fig. 19;

[0243] Fig. 21 : a schematic sectional view of a force transmission arrangement and a representation of the associated diverting element and demarcation element;

[0244] Fig. 22: a schematic sectional view of a force transmission arrangement and a representation of the associated diverting element and demarcation element;

[0245] Fig. 23: a schematic sectional view of a force transmission arrangement; and Fig. 24: two views illustrating a prestressing of a discharge element by means of a prestressing plane.

[0246] Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

[0247] Fig. 1 shows a power transmission assembly 110. The power transmission assembly 110 is suitable for an electric machine. The power transmission assembly 110 comprises a movable power transmission element 103. The movable power transmission element 103 extends along a longitudinal axis 106. The power transmission element 103 is a shaft 104, whose rotational axis 107 forms the longitudinal axis 106.

[0248] The power transmission assembly 110 includes a bearing 112. The movable power transmission element 103 is movable in the bearing 112. The movable power transmission element 103 is rotatably mounted in the bearing 112.

[0249] The force transmission assembly 110 includes a dissipating element 150. The dissipating element 150 is in electrical contact with a surface 114 of the force transmission element 103. The electrical contact is a sliding contact. The surface 114 of the force transmission element 103 is an outer surface 116 of the force transmission element 103.

[0250] The power transmission assembly 110 includes a boundary element 118. The boundary element 118 defines a first zone 120, in which the bearing 112 is located, from a second zone 122, in which the discharge element 150 is in electrical contact with the surface 114.

[0251] The first zone 120 is a lubrication zone 124. The second zone 122 is a discharge contact zone 126.

[0252] The power transmission arrangement 110 shown in Fig. 1 comprises a diverter unit 128.

[0253] The discharge unit 128 is a sealing unit 130.

[0254] The discharge unit 128 comprises the in electrical contact with the outer surface

[0255] 116 standing diverter element 150. The diverter unit 128 comprises the demarcation element

[0256] 118, which delimits the first zone 120 from the second zone 122. The discharge unit 128 includes an outer support element 132. The outer support element 132 is positioned so that it does not touch the outer surface 116.

[0257] The discharge element 150 is fixed to the outer support element 132. The discharge element 150 extends toward the longitudinal axis 106 and radially inward.

[0258] The diverter unit comprises a boundary element 118, which is fixed to the outer support element 132 and extends in the direction of the longitudinal axis and radially inward, and which has already been mentioned in connection with Fig. 1. The boundary element 118 is a barrier element 134, which forms a barrier between the first zone 120 and the second zone 122.

[0259] The boundary element 118 is a sealing element 108. The sealing element 108 is annular. The discharge unit 128 thus forms a sealing unit 130.

[0260] The force transmission element 103, the diverting element 150, and the boundary element 118 together form a diverting arrangement 136. The diverting arrangement 136 is a sealing arrangement 100.

[0261] Fig. 1 also shows a bearing zone 138. In the bearing zone 138, the movable force transmission element 103 is rotatably mounted in the bearing 112.

[0262] Fig. 2 shows the bearing zone 138 from Fig. 1 in an enlarged view. The bearing zone 138 forms part of the first zone 120. As already described in connection with Fig. 1, the first zone 120 is the lubrication zone 124.

[0263] A lubricant 140 extends from the bearing zone 138 into the lubrication zone 124. Between the outer surface 116 and bearing elements 142, the lubricant 140 forms a first lubricant layer 144.

[0264] Fig. 3 shows a surface contact area 105 from Fig. 1 in an enlarged view. There, a portion of the lubricant 140, which passes past the sealing element 108 along the outer surface 116 into the second zone 122, forms a second lubricant layer 146. Preferably, the second lubricant layer 146 can be significantly thinner than the first lubricant layer 144.

[0265] In particular, this can favor a discharge in the transition from the discharge element 150 to the outer surface 116 compared to a discharge in the area of ​​the bearing zone 138, so that discharges do not occur or occur less frequently in the bearing and bearing damage caused by electrical erosion does not occur or only occurs significantly later.

[0266] Fig. 3 also shows that the diverting element 150 comprises a diverting contact region 152 extending radially inward toward the longitudinal axis 106. By arranging the diverting unit 150 on the force transmission element 103, the diverting contact region 152 is brought into electrical contact with the outer surface 116.

[0267] Fig. 4 shows a discharge element 150. The discharge element 150 is a first discharge element 154. The discharge element 150 shown in Fig. 4 comprises a plurality of spaced-apart discharge contact regions 152.

[0268] The deflection element 150 shown in Fig. 4 is annular. It can be arranged around the force transmission element 103, e.g., around the shaft 104. The longitudinal axis 106, e.g., the rotational axis 107, of the force transmission element 103, e.g., the shaft 104, then extends toward the viewer, as indicated in Fig. 4.

[0269] The discharge element 150 extends radially further inward in the discharge contact regions 152 in the direction of the longitudinal axis 106 than in the intermediate regions 156 lying between the discharge contact regions 152.

[0270] Fig. 5 shows a further discharge element 150. The further discharge element 150 is a second discharge element 158. The shape of the second discharge element 158 ​​shown in Fig. 5 corresponds to the shape of the first discharge element 154 shown in Fig. 4.

[0271] In a discharge unit according to the invention, the discharge element can be a first discharge element, and the boundary element or another discharge element encompassed by the discharge unit can be a second discharge element. Fig. 6 shows two discharge elements that can be used in this sense. The discharge elements shown in Fig. 6 are arranged such that the intermediate regions of one discharge element overlap with the discharge contact regions 152 of the other discharge element. In the example shown in Fig. 6, the discharge contact regions 152 are each arranged exactly centrally in the intermediate regions of the other discharge element.

[0272] Fig. 7 shows a derivation unit 128.

[0273] The discharge unit 128 comprises an outer support element 132 and a discharge element 150 fixed to the outer support element and extending radially inward toward the longitudinal axis 106.

[0274] The discharge element 150 is a first discharge element 154. The discharge unit 128 comprises a further discharge element 150. The further discharge element 150 is a second discharge element 158. The first and second discharge elements 154 and 158 extend in the same direction. The first discharge element 154 and the second discharge element 158 ​​are each a discharge element 150 extending radially inward toward the longitudinal axis.

[0275] The diverting elements 154 and 158 shown in Fig. 7 may, for example, be the diverting elements 154 and 158 shown in Fig. 6.

[0276] In the discharge unit 128 shown in Fig. 7, the boundary element 118 is the second discharge element 158.

[0277] The boundary element 118 is a boundary element 118 fixed to the outer support element, extending in the direction of the longitudinal axis and radially inward. Fig. 7 clearly shows that when the diverter unit 128 is arranged on the force transmission element 103, the boundary element 118 delimits a first zone 120 of the outer surface 116 of the force transmission element 103 from a second zone 122 of the outer surface of the force transmission element.

[0278] As already explained in connection with Fig. 1, the second zone 122 can be a discharge contact zone 126.

[0279] If the boundary element 118 shown in Fig. 7 is the second diverting element 158 ​​shown in Figs. 5 and 6, the diverting contact regions 152 of the boundary element 118 come into electrical contact with the outer surface 116 when the diverting unit 128 is arranged on the force transmission element 103. Since the intermediate regions 156 of the boundary element 118 typically do not reach as far as the outer surface 116 when the diverting unit 128 is arranged on the force transmission element 103, the second zone 122 is not sealed off from the first zone 120 by the boundary element 118 shown in Fig. 7.

[0280] If the diverter unit 128 shown in Fig. 7 is used in a power transmission arrangement 110, it is therefore advisable to provide a further boundary element 118, which is designed as a sealing element 108, between the first zone 120 and a bearing 112.

[0281] Then the first zone shown in Fig. 7 would not be the lubrication zone 124. The lubrication zone 124 would then extend from the bearing 112 to the sealing element 108.

[0282] In the discharge unit 128 shown in Fig. 7, the two discharge elements 154 and 158 are formed, elastically deformed and / or prestressed by means of an obliquely extending alignment section 131 of the discharge unit 128.

[0283] The discharge unit 128 shown in Fig. 7 comprises a receiving zone 160. The receiving zone 160 extends radially outward into a receiving recess 162 formed on the outer support element 132.

[0284] The two discharge elements 154 and 158 are secured to the outer support element by means of a securing element 164. The securing element 164 is partially received in the receiving recess 162.

[0285] The discharge unit 128 shown in Fig. 8 corresponds to the discharge unit 128 shown in Fig. 7. It differs from the discharge unit 128 shown in Fig. 7 in that it comprises only one discharge element 150.

[0286] Fig. 9 shows a diverter unit 128. The diverter unit 128 is a sealing unit 130. The diverter unit shown in Fig. 9 has features that have already been described in connection with Figs. 1 to 8, in particular in connection with Figs. 1 and 7. In the diverter unit 128 shown in Fig. 9, the diverter element 150 is reshaped, elastically deformed and / or prestressed by means of an obliquely extending alignment section 131 of the diverter unit 128.

[0287] A first alignment portion 168 is an alignment portion 131 formed on the outer support member 132.

[0288] The diverting unit shown in Fig. 9 comprises a separation element 166. A second alignment section 170 is an alignment section 131 formed on the separation element 166. The separation element 166 is arranged between the diverting guide element 150 and the boundary element 118, which is a sealing element 108. The separation element 166 thus separates the diverting element 150 from the boundary element 118.

[0289] The diverting element is formed, elastically deformed and / or prestressed between the first obliquely extending alignment section 168 and the second obliquely extending alignment section 170.

[0290] The two alignment sections 168 and 170 run essentially parallel to each other.

[0291] The diverter unit 128 shown in Fig. 9 comprises a retaining element 172, which simultaneously exerts a static sealing effect. The retaining element 172 is arranged between the fixing element 164 and the boundary element 118. The retaining element 172 can act as a secondary static sealing element.

[0292] The invention makes it possible to integrate a sealing function of a sealing unit 130 shown in Fig. 10 and the discharge function of a discharge unit 128 shown in Fig. 11 into a discharge unit 128, which is also a sealing unit 130. An example of a discharge unit 128, which is also a sealing unit 130, is shown in Fig. 12.

[0293] The structure of the discharge unit 128 shown in Fig. 12 largely corresponds to the structure of the discharge unit 128 shown in Fig. 9.

[0294] Fig. 12 shows that the separation element 166 has a separation section 174. A separation section thickness 176 of the separation element 166 at the separation section 174 is greater than an alignment section thickness 178 of the separation element 166 at an alignment section 131 of the separation element 166. The separation section thickness 176 can be measured in the axial direction. The alignment section thickness 178 can be a thickness measured orthogonally to a surface of the alignment section.

[0295] The first alignment section 168 is a diverting element alignment section 180. The second alignment section 170 is a sealing element alignment section 182.

[0296] The sealing element alignment section abuts a surface of the sealing element 108, whereby the sealing element 108 is reshaped, elastically deformed, and / or prestressed. The diverting element alignment section 180 abuts a surface of the diverting element 150, whereby the diverting element 150 is reshaped, elastically deformed, and / or prestressed.

[0297] A part of the sealing element alignment section 182 extends at a distance from the diverting element 150 in the direction of an outer surface 116 of a force transmission element 103 on which the diverting unit 128 can be arranged.

[0298] Fig. 13 illustrates one possibility for increasing the separation section thickness 176 of the separation element 166. Apart from the larger separation section thickness 176, the discharge unit shown in Fig. 13 largely corresponds to the discharge unit 128 shown in Fig. 12.

[0299] Fig. 14 shows a discharge unit 128 comprising a pressing element 184. The pressing element 184 is a spring plate 186. With the pressing element 184, the discharge element 150 of the discharge unit, e.g., a discharge contact area 152 of the discharge element 150, can be pressed onto an outer surface 116 (not shown in Fig. 14) of the force transmission element 103 when the discharge unit 128 is arranged on a force transmission element 103. This can enhance the electrical contact between the discharge element and the outer surface of the force transmission element 103.

[0300] The diverter unit 128 shown in Fig. 15 is a sealing unit 130. It comprises two boundary elements 118. The boundary element 118 shown on the left in the figure is a first boundary element 188. The boundary element 118 shown on the right in Fig. 15 is a second boundary element 190. Both boundary elements 118, 188, 190 are sealing elements 108. The first boundary element 188 shown on the left in Fig. 15 is a first sealing element 192. The second boundary element 190 shown on the right in Fig. 15 is a second sealing element 194. Fig. 15 shows that the first boundary element 188 when the diverter unit 128 is arranged on the force transmission element 103 forms a first zone 120 of the outer surface 116 of the force transmission element 103 from a second zone 122 of the outer surface 116 of the force transmission element 103.

[0301] Fig. 15 also shows that when the diverter unit 128 is arranged on the force transmission element 103, the second demarcation element 190 demarcates the second zone 122 of the outer surface 116 of the force transmission element 103 from a third zone 196 of the outer surface 116 of the force transmission element 103.

[0302] As already explained in connection with other figures, the first zone 120 can be a lubrication zone 124. The second zone 122 can be a diverting contact zone 126. The third zone 196 can be another lubrication zone 198.

[0303] An advantage explained in particular in connection with Figs. 2 and 3 can also result with the diverter unit 128 shown in Fig. 15, for example, when the bearing on the force transmission element 103 is arranged to the left or right of the diverter unit shown in Fig. 15, since the two sealing elements 108, 192, 194 are arranged on both sides of the diverter element, the two sealing elements 108, 192, 194 can therefore counteract the penetration of lubricant into the diverter contact zone 126 in both directions.

[0304] Fig. 16 shows a discharge unit 128. The discharge unit 128 is a sealing unit 130. In the discharge unit 128 shown in Fig. 16, the discharge element 150 and the boundary element 118 extend from an exit zone 200 of the discharge unit 128.

[0305] The dissipating element 150, the boundary element 118, and the output zone 200 are formed by an electrically conductive body 204 containing a dissipating material 202. The body 204 can function as the outer support element 132. The boundary element 118 shown on the left in Fig. 16 can be, for example, a first boundary element 188. The boundary element 118 shown on the right in Fig. 16 can be, for example, a second boundary element 190. In the dissipating unit shown in Fig. 16, the second boundary element 190 is also formed by the body 204. The body 204 is a composite body 206. The composite body 206 comprises a conductive material 202 and a connecting material 208. The conductive material 202 is embedded in the connecting material 208.

[0306] With the arrangement of the discharge unit 128 shown in Fig. 16, the division of the outer surface 116 into a first zone 120, a second zone 122 and a third zone 196, as already described in connection with Fig. 15, can result, including the advantages also described in connection with Fig. 15.

[0307] Fig. 17 shows a power transmission arrangement 110.

[0308] The power transmission arrangement 110 comprises a movable power transmission element 103. The movable power transmission element 103 extends along a longitudinal axis 106. The power transmission element 103 is a shaft 104 whose rotational axis 107 forms the longitudinal axis 106.

[0309] The power transmission arrangement 110 comprises a bearing 112. The movable power transmission element 103 is rotatably mounted in the bearing 112.

[0310] The power transmission assembly 110 includes a dissipating element 150. The dissipating element 150 is in electrical contact with a surface 114. The electrical contact can be a sliding contact. The surface with which the dissipating element is in electrical contact is an inner surface 212 of a contact element 214. The inner surface 212 is a radially inwardly oriented inner surface 212. The radially inwardly oriented inner surface is cylindrical. The inner surface 212 can be an inner surface of a cylindrical recess that extends through the contact element 214. The contact element 214 can be a component 216, for example, a steel component, that has the recess.The power transmission arrangement 110 comprises a boundary element 118 which defines a first zone 120 in which the bearing 112 is arranged from a second zone 122 in which the discharge element 150 is in electrical contact with the surface 114.

[0311] The first zone 120 is a lubrication zone 124. The second zone 122 is a discharge contact zone 126.

[0312] The demarcation element 118 shown on the left in Fig. 17 is a first demarcation element 188.

[0313] The force transmission assembly 110 includes a second boundary element 190, which is shown on the right in Fig. 17. The first boundary element 188 is a first sealing element 192. The second boundary element 190 is a second sealing element 194.

[0314] The second demarcation element 190 delimits a third zone 196 from the second zone 122.

[0315] The force transmission arrangement 110 comprises a further discharge element 150 which, like the discharge element 150 mentioned above in connection with Fig. 17, is in electrical contact with the surface 114 of the contact element.

[0316] The power transmission assembly 110 shown in Fig. 17 comprises a diverter unit 128. The diverter unit 128 is a sealing unit 130.

[0317] The discharge unit 128 comprises the two discharge elements 150 in electrical contact with the surface 114 as well as the first boundary element 188 and the second boundary element 190, which delimit the three zones 120, 122, 196 from one another.

[0318] In contrast to the other diverter units 128 shown in the figures, the diverter unit shown in Fig. 17 comprises an inner support element 218. The inner support element 218 is fixed to the outer surface 116 of the force transmission element 103. It is fixed to the outer surface 116 by means of two O-rings 220, which are received in two recesses 222 of the diverter unit 128. The two diverter elements 150 described in connection with Fig. 17 are fixed to the inner support element 218 and each extend in the direction away from the longitudinal axis 106 and radially outward.

[0319] The two boundary elements 118, 188, 190 described in connection with Fig. 17 are fixed to the inner support element 218 and also extend in the direction away from the longitudinal axis 106 and radially outwards.

[0320] The boundary elements and conducting elements described in connection with Fig. 17 extend from an output zone 200 of the conducting unit 128. The conducting elements and boundary elements are formed by an electrically conductive body 204. The electrically conductive body 204 contains a conducting material 202. The body 204 is a composite body 206. The composite body 206 comprises the conducting material 202 and a connecting material 208. The conducting material 202 is embedded in the connecting material 208.

[0321] Fig. 17 shows that the bearing 112 and the deflection unit 128 are arranged in a hollow cylindrical gap 224, which is bounded inwardly by the outer surface 116 of the force transmission element 103 and outwardly by the inner surface 212 of the component 216. The component 216 can be a machine element 219.

[0322] Fig. 18 shows a further power transmission arrangement 110. The power transmission arrangement 110 comprises the discharge unit 128 shown in Fig. 9.

[0323] In Fig. 1, the sealing element 108 extends from the outer support element 132 in the axial direction away from the bearing 112. In Fig. 18, the sealing element 108 extends from the outer support element 132 in the axial direction toward the bearing 112.

[0324] The power transmission arrangement shown in Fig. 1 is designed for uses in which a pressure P1 is established in the first zone 120 which is lower than a pressure P2 which is established in the second zone 122.

[0325] The force transmission arrangement shown in Fig. 18 is designed for applications in which a pressure P1 in the first zone 120 is greater than a pressure P2 in the second zone 122. The arrangements shown in Figs. 1 and 18 are also advantageous for pressureless lubricant and, in particular, oil sealing, since an increased capillary effect of, for example, low-viscosity oil in the sealing gap can be minimized. Both arrangements can therefore also be used particularly advantageously when the pressure P1 differs from the pressure P2, or differs only slightly.

[0326] Fig. 19 shows three different representations of a diverting element 150. The diverting element 150 is the first diverting element 154 shown in Fig. 4. The diverting element 150, 154 is shown in a flat basic state, in which it exists when it is not arranged on a force transmission element 103 and is also not reshaped, elastically deformed and / or prestressed by means of an obliquely running alignment section 131. This is particularly clear from the view shown on the far right in Fig. 19, in which an outer edge 155 of the diverting element 150, 154 faces the viewer. In the basic state shown, the diverting contact regions 152 also do not protrude from a plane along which the entire diverting element 150, 154 extends.

[0327] The discharge element 150, 154 comprises four discharge conductors 153, each extending toward one of the four discharge contact areas 152. Each discharge conductor occupies a discharge area 157. The discharge area 157 of each discharge conductor 153 amounts to at least 1% to at most 10% of a recess area 159 surrounded by the discharge element 150, 154, into which the discharge conductors 153 extend.

[0328] Fig. 20 also shows the discharge element 150, 154 shown in Fig. 19. The discharge element 150, 154 can be described by two circles whose centers 163 coincide. An inner circle has a radius of r1. An outer circle has a radius of r2. The radius r1 corresponds to the distance from a discharge contact area 152 to the center 163. The radius r2 is selected such that the area of ​​the outer circle corresponds to the recess area 159. The ratio r1 to r2 is approximately 0.65.

[0329] Fig. 21 shows a diverter unit 128. The diverter unit 128 is similar to the diverter unit shown in Fig. 7. The diverter unit 128 shown in Fig. 21 is a sealing unit 130. The boundary element 118 is a sealing element 108. This is particularly clear from the illustration shown on the right in Fig. 21, which shows not only the diverter element 150 but also the boundary element 118 designed as a sealing element 108. Fig. 22 also shows a diverter unit 128. This differs from the diverter unit of Fig. 21 in the arrangement of the diverter element 150 and the sealing element 108. In addition, the diverter contact areas 152 of the diverter element 150 are shorter than the diverter contact areas 152 of the diverter element 150 shown in Fig. 21.

[0330] The discharge unit 128 shown in Fig. 23 is a sealing unit 130. It comprises several separation elements 166. One of the separation elements 166 is multi-part. It has a first separation component 167 and a second separation component 169.

[0331] The first separation component 167 has an alignment section 131. The alignment section 131 is a sealing element alignment section 182. The first separation component 167 is a deep-drawn separation component 171 obtained by deep-drawing.

[0332] A material thickness of the deep-drawn separation component 171 in the region of the sealing element alignment section 182 corresponds to a material thickness in the region of a radial extension section 173 of the deep-drawn separation component 171 adjoining the alignment section, e.g., the sealing element alignment section.

[0333] A material thickness of the second separation component 169, measured in the direction of the longitudinal axis 106, is greater than a material thickness of the first separation component 167, measured in the direction of the longitudinal axis. The two separation components 167 and 169 are annular. The inner diameter of the second separation component 169 is greater than the inner diameter of the sealing element alignment section 182.

[0334] The separation element 166 has a separation section 174 formed radially outside the sealing element alignment section 182, which is formed by the second separation component 169 and the radial extension section 173 of the first separation component 167.

[0335] The diverter unit 128 shown in Fig. 23 comprises an outer support element 132 and a diverter element 150 fixed to the outer support element 132 and extending radially inward toward the longitudinal axis 106. The diverter unit 128 also comprises two boundary elements 118, 188, 190 fixed to the outer support element 132 and extending radially inward toward the longitudinal axis 106. The first boundary element 188 is a first sealing element 192. The first boundary element 188 is a rotated boundary element 189. It is therefore a first rotated sealing element 193.

[0336] The second boundary element 190 is a second sealing element 194. The second boundary element 190 is a shaped boundary element 191. It is therefore a first shaped sealing element 195.

[0337] By arranging the diverting unit 128 on the force transmission element 103, a first zone of the outer surface of the force transmission element, which may be, for example, a lubrication zone, can be separated from a second zone of the outer surface of the force transmission element, which may be, for example, a diverting contact zone.

[0338] The described multi-part separation element 166 is arranged between the discharge element 150 and the shaped sealing element 195, wherein the shaped sealing element 195 is reshaped, elastically deformed and / or prestressed by means of the obliquely extending sealing element alignment section 182.

[0339] A further separation element 166 is arranged between the diverting element 150 and the rotated sealing element 193, wherein the diverting element 150 is reshaped, elastically deformed and / or prestressed by means of the obliquely extending alignment section 131 of this further separation element 166.

[0340] The molded sealing element 193 has a sealing surface 230. The sealing surface 230 has a lubricant retention structure 231 in which a first spiral groove 232 and a second spiral groove 234 are formed. The spiral grooves 232 and 234 may, for example, be formed as described elsewhere herein, independent of Fig. 23.

[0341] Fig. 23 shows a small section of a plane that can be used to further define the discharge unit 228. The plane is a prestressing plane 228. The longitudinal axis lies in the prestressing plane 228. The discharge element 150, in particular a discharge contact region 152 of the discharge element 150, is reshaped, elastically deformed, and / or prestressed by a movement 226 parallel to the prestressing plane 228.

[0342] Fig. 24 shows a discharge unit 128 from two different viewing directions and in a highly simplified manner, with the support element in particular being omitted. The discharge element 150 comprises a discharge contact region 152. However, it is oriented quite differently than the discharge elements 128 shown in the other figures. Although the discharge contact region 152 of the discharge element 150 in the discharge unit 128 of Fig. 24 is also reshaped, elastically deformed, and / or prestressed by a movement 226 parallel to a prestressing plane 228, the prestressing plane 228 is oriented orthogonally to the longitudinal axis 106.

[0343] List of reference symbols

[0344] Seal arrangement 100

[0345] Power transmission element 103

[0346] Wave 104

[0347] Surface contact area 105

[0348] Longitudinal axis 106

[0349] Rotation axis 107

[0350] Sealing element 108

[0351] Power transmission arrangement 110

[0352] Camp 112

[0353] Surface 114

[0354] Outer surface 116

[0355] demarcation element 118 first zone 120 second zone 122

[0356] Lubrication zone 124

[0357] Discharge contact zone 126

[0358] Lead unit 128

[0359] Sealing unit 130

[0360] Alignment section 131 outer support element 132

[0361] Barrier element 134

[0362] Discharge arrangement 136

[0363] Storage Zone 138

[0364] Lubricant 140

[0365] Bearing element 142 first lubricant layer 144 second lubricant layer 146

[0366] Discharge element 150

[0367] Discharge contact area 152

[0368] Arrester 153 first arrester element 154 outer edge 155

[0369] Intermediate area 156 Conductor surface 157 Second conductor element 158

[0370] Recess area 159

[0371] Recording zone 160

[0372] Recording recess 162

[0373] Center 163

[0374] Determination element 164

[0375] Separation element 166 first separation component 167 first alignment section 168 second separation component 169 second alignment section 170

[0376] Deep-drawn separation component 171

[0377] Holding element 172

[0378] Radial extension section 173

[0379] Separation section 174

[0380] Separation section thickness 176

[0381] Alignment section thickness 178

[0382] Discharge element alignment section 180

[0383] Sealing element alignment section 182

[0384] Pressure element 184

[0385] Spring plate 186 first demarcation element 188 turned demarcation element 189 second demarcation element 190 shaped demarcation element 191 first sealing element 192 turned sealing element 193 second sealing element 194 shaped sealing element 195 third zone 196 further lubrication zone 198

[0386] Exit zone 200

[0387] Conductive material 202

[0388] Body 204 Composite body 206 Joining material 208 Internal surface 212

[0389] Contact element 214

[0390] Component 216 inner support element 218

[0391] O-ring 220

[0392] depression 222 hollow cylindrical gap 224 movement 226

[0393] Preload plane 228 Sealing surface 230 First spiral groove 232 Second spiral groove 234

Claims

Patent claims 1. A diverter unit (128) for arrangement on a movable force transmission element (103) which extends along a longitudinal axis, e.g. for arrangement on a shaft (104) whose axis of rotation (107) forms the longitudinal axis (106), wherein the diverter unit (128) comprises either the following: an outer support element (132) and a diverter element (150) which is fixed to the outer support element (132) and extends in the direction of the longitudinal axis (106) and / or radially inward, or the diverter unit (128) comprises the following: an inner support element (218) and a diverter element (150) which is fixed to the inner support element (218) and extends in the direction away from the longitudinal axis (106) and / or radially outward.

2. Diverter unit (128) according to claim 1, characterized in that the diverter unit (128) comprises either the following: a delimiting element (118) which is fixed to the outer support element (132) and extends in the direction of the longitudinal axis (106) and / or radially inwards and which, when the diverter unit (128) is arranged on the force transmission element (103), separates a first zone (120) of the outer surface (116) of the force transmission element (103), which can be a lubricating zone (124), for example, from a second zone (122) of the outer surface (116) of the force transmission element (103), which can be a lubricating zone (124), for example.a diverting contact zone (126), or the diverting unit (128) comprises the following: a demarcation element (118) which is fixed to the inner carrier element (132) and extends in the direction away from the longitudinal axis (106) and / or radially outwards and which, when the diverting unit (128) is arranged on the force transmission element (103), delimits a first zone (120) of the inner surface (212) of a surrounding contact element (214), which, for example, is a. lubrication zone (124), from a second zone (122) of the inner surface (212) of the contact element (214), which may be, for example, a discharge contact zone (126).

3. Discharge unit (128) according to claim 2, characterized in that the boundary element (118) is a sealing element (108), e.g., an annular sealing element (108), wherein the discharge unit (128) can be, e.g., a sealing unit (130).

4. Discharge unit (128), e.g. sealing unit (130), according to claim 3, characterized in that the sealing element (108), e.g. the annular sealing element, has a sealing surface (230), wherein the sealing surface (230) comes to lie on the outer surface (116) or the inner surface (212) when the discharge unit (128), which is e.g. the sealing unit (130), is arranged, wherein a sealing contact between the sealing surface (230) and the outer surface (116) or between the sealing surface (230) and the inner surface (212) can preferably be a dynamic sealing contact, wherein the sealing surface (230) preferably has a lubricant retention structure (231), wherein it is preferred if the lubricant retention structure in the region of the dynamic sealing contact is able to counteract an undesired escape of lubricant at least in one direction of rotation of the force transmission element (103), e.g. of the shaft (104), wherein it is preferred if the lubricant retention structure (231) comprises a swirl structure, wherein it is particularly preferred if a spiral groove (232, 234) is formed in the sealing surface (230).

5. Discharge unit (128), e.g. sealing unit (130), according to one of the preceding claims, characterized in that the discharge element (150) is annular.

6. Discharge unit (128), e.g. sealing unit (130), according to one of the preceding claims, characterized in that the discharge element (150) comprises at least one discharge contact region (152) extending in the direction of the longitudinal axis (106) and / or radially inward, which can be brought into electrical contact with the outer surface (116) of the force transmission element (103) when the discharge unit (150) is arranged, or the discharge element (150) comprises at least one discharge contact region (152) extending in the direction away from the longitudinal axis (106) and / or radially outward, which can be brought into electrical contact with the inner surface (212) of the contact element (214) when the discharge unit (150) is arranged.

7. Discharge unit (128), e.g. sealing unit (130), according to one of the preceding claims, characterized in that the discharge element (150) comprises a plurality of discharge contact areas (152) spaced apart from one another.

8. Drainage unit (128), e.g., sealing unit (130), according to one of claims 2 to 7, characterized in that the diverting unit (128) comprises either the following: the outer support element (132), the diverting element (150) fixed to the outer support element (132) and extending in the direction of the longitudinal axis (106) and / or radially inward, and the delimiting element (118) fixed to the outer support element (132) and extending in the direction of the longitudinal axis (106) and / or radially inward, which, when the diverting unit (128) is arranged on the force transmission element (103), separates the first zone (120) of the outer surface (116) of the force transmission element (103) from the second zone (122) of the outer surface (116) of the force transmission element (103), wherein it may be advantageous if the demarcation element is or has a textile fabric, wherein it may be advantageous if the diverting element (150) comprises a plurality of spaced-apart diverting contact regions (152) of the diverting element (150), wherein the plurality of spaced-apart diverting contact regions (152) of the diverting element (150) can be brought into electrically conductive contact with the outer surface (116) of the force transmission element (103) when the diverting unit (128) is arranged on the force transmission element (103); or the diverting unit (128) comprises: the inner support element (218), the diverting element (150) fixed to the inner support element (218) and extending in the direction away from the longitudinal axis (106) and / or radially outward, and the boundary element (118) fixed to the inner support element (132) and extending in the direction away from the longitudinal axis (106) and / or radially outward,which, when the diverting unit (128) is arranged on the force transmission element (103), delimits the first zone (120) of the inner surface (212) of the surrounding contact element (214) from the second zone (122) of the inner surface (212) of the contact element (214), wherein it may be advantageous if the delimiting element is or has a textile fabric, wherein it may be advantageous if the diverting element (150) comprises a plurality of spaced-apart diverting contact regions (152), wherein the plurality of spaced-apart diverting contact regions (152) of the diverting element (150) can be brought into electrically conductive contact with the inner surface (212) of the contact element (214) when the diverting unit (128) is arranged on the force transmission element (103).

9. Discharge unit (128), e.g. sealing unit (130), according to one of claims 2 to 8, characterized in that the discharge element (150) is a first discharge element (154) and the boundary element (118) or a further discharge element (150) comprised by the discharge unit (128) is a second discharge element (158), wherein the second discharge element (158) and the first diverting element (154) extend in the same direction, wherein preferably the first and the second diverting element (154, 158) are each a diverting element (150) extending in the direction towards the longitudinal axis (106) and / or radially inwards, or preferably the first and the second diverting element (154, 158) are each a diverting element (150) extending in the direction away from the longitudinal axis (106) and / or radially outwards.

10. Discharge unit (128), e.g. sealing unit (130), according to claim 9, characterized in that the at least one discharge contact region (152) of the first discharge element (154) is at least a first discharge contact region (152) and the second discharge element (158) comprises at least a second discharge contact region (152), wherein the first and the second discharge contact region (152) both extend either in the direction towards the longitudinal axis (106) and / or radially inwards or in the direction away from the longitudinal axis (106) and / or radially outwards.

11. Discharge unit (128), e.g. sealing unit (130), according to claim 9 or 10, characterized in that at least one intermediate region (156) of a discharge element (150), in particular at least a first intermediate region (156) of the first discharge element (154), at least partially overlaps with a discharge contact region (152) of a further discharge element (150), in particular with a discharge contact region (152) of the second discharge element (158), e.g. with the second discharge contact region (152).

12. Discharge unit (128), e.g. sealing unit (130), according to one of the preceding claims, characterized in that the discharge unit (128) comprises a pressing element (184), e.g. a spring plate (186), with which at least one discharge element (150) of the discharge unit (128), e.g. a discharge contact region (152) of the discharge element (150), in the arrangement of the discharge unit (128) on the force transmission element (103) can be pressed onto the outer surface (116) of the force transmission element (103) or onto the inner surface (212) of the contact element (214).

13. Dissipation unit (128), e.g., sealing unit (130), according to one of claims 1 to 12, characterized in that a contact pressure measurable orthogonally to the outer surface (116) of the force transmission element (103), with which a dissipation element (150) can be held in electrical contact with the outer surface (116) of the force transmission element (103) when the dissipation unit (128) is arranged on the force transmission element (103), reaches at least 15 mN when a smallest inner diameter of the dissipation element (150) is increased by one millimeter, starting from a non-prestressed basic state of the dissipation element (150) when the dissipation unit (128) is arranged on the force transmission element (103), or a contact pressure measurable orthogonally to the inner surface (212) of the contact element (214),with which a discharge element (150) can be held in electrical contact with the inner surface (212) of the contact element (214) when the discharge unit (128) is arranged on the contact element (214), reaches at least 10 mN when a largest outer diameter of the discharge element (150) is reduced by one millimeter, starting from a non-prestressed basic state of the discharge element (150), when the discharge unit (128) is arranged on the contact element (214).

14. Discharge unit (128), e.g. sealing unit (130), according to one of the preceding claims, characterized in that at least one discharge element (150) and / or at least one boundary element (118) and / or at least one sealing element (108) is arranged by means of an obliquely extending the alignment section (131) of the discharge unit (128) is reshaped, elastically deformed and / or prestressed, wherein it is preferred if the at least one discharge element (150) and / or the at least one boundary element (118) and / or the at least one sealing element (108) is reshaped, elastically deformed and / or prestressed by means of an obliquely running alignment section (131) of the discharge unit (128) and by means of the pressing element (184), wherein it is preferred if the at least one discharge element (150) and / or the at least one boundary element (118) and / or the at least one sealing element (108) is reshaped, elastically deformed and / or prestressed between an obliquely running alignment section (131) and the pressing element (184).

15. Discharge unit (128), e.g. sealing unit (130), according to one of the preceding claims, characterized in that at least one discharge element (150) is a composite element or comprises a composite element, wherein the composite element comprises a discharge material (202) and a reinforcing material.

16. Discharge unit (128) according to one of claims 1 to 8 or sealing unit (130) according to one of claims 3 to 8, characterized in that the discharge element (150) is a composite element or comprises a composite element, wherein the composite element comprises a discharge material (202) and a reinforcing material.

17. Dissipation unit (128), e.g., sealing unit (130), according to claim 15 or 16, characterized in that the dissipation material is a metal wool and the reinforcement material is a plastic; and / or the reinforcement material comprises two plastic layers and the dissipation material extends between the two plastic layers.

18. Drainage unit (128), e.g., sealing unit (130), according to one of claims 2 to 17, characterized in that the diverting unit (128) comprises the following: the boundary element (118) extending in the direction of the longitudinal axis (106) and / or radially inwards, which represents a first boundary element (188), and a second boundary element (190) which also extends in the direction of the longitudinal axis (106) and / or radially inwards, or the diverting unit (128) comprises the following: the boundary element (118) extending in the direction away from the longitudinal axis (106) and / or radially outwards, which represents a first boundary element (188), and a second boundary element (190) which also extends in the direction away from the longitudinal axis (106) and / or radially outwards.

19. Drainage unit (128), e.g., sealing unit (130), according to one of claims 2 to 18, e.g. according to claim 18, characterized in that the discharge element (150) and the boundary element (118) extend from an output zone (200) of the discharge unit (128), wherein it is preferred if at least a part of the discharge element (150), at least a part of the boundary element (118) and at least a part of the output zone (200) are formed by an electrically conductive body (204) containing at least one discharge material (202), which body can e.g. function as the carrier element (132, 218) or e.g. be arranged on the carrier element (132, 218), wherein e.g. B. at least a part of the second boundary element (190) can also be formed by the body (204), wherein the body (204) can be a composite body (206) comprising a conductive material (202) and a connecting material (208), wherein it can be preferred if the conductive material (202) is embedded in the connecting material (208).

20. A discharge arrangement (136), e.g., a sealing arrangement (100), wherein the discharge arrangement (136) comprises: a movable force transmission element (103) which extends along a longitudinal axis (106), e.g. a shaft (104) whose axis of rotation (107) forms the longitudinal axis (106), and / or a contact element (214), a discharge element (150) which is in electrical contact, e.g. B. in sliding contact, with an outer surface (116) of the force transmission element (103) or with an inner surface (212) of the contact element (214), and a delimiting element (118) which delimits a first zone (120) of the outer surface (116) of the force transmission element (103) from a second zone (122) of the outer surface (116) of the force transmission element (103) or delimits a first zone (120) of the inner surface (212) of the contact element (214) from a second zone (122) of the inner surface (212) of the contact element (214), wherein the first zone (120) can be, for example, a lubricating zone (124) and the second zone (122) can be, for example, a diverting contact zone (126).

21. Discharge arrangement (136), e.g. sealing arrangement (100), according to claim 20, characterized in that the discharge arrangement (136), e.g. the sealing arrangement (100), comprises a discharge unit (128), e.g. sealing unit (130), according to one of claims 1 to 19, wherein the discharge unit (128), e.g. the sealing unit (130), comprises the discharge element (150) which is in electrical contact, e.g. in sliding contact, with the outer surface (116) or with the inner surface (212), and wherein the discharge unit (128), e.g. the sealing unit (130), preferably comprises the boundary element (118) which delimits the first zone (120) from the second zone (122).

22. Discharge arrangement (136), e.g., sealing arrangement (100), according to claim 20 or 21, characterized in that a contact pressure force that can be measured orthogonally to the outer surface (116) of the force transmission element (103), with which the discharge element (150) is held in electrical contact with the outer surface (116) of the force transmission element (103) is at least 15 mN, or a contact force measurable orthogonally to the inner surface (212) of the contact element (214) with which a discharge element (150) is held in electrical contact with the inner surface (212) of the contact element (214) is at least 10 mN.

23. Power transmission arrangement (110), in particular for an electrical machine, the power transmission arrangement (110) comprising the following: a movable power transmission element (103) which extends along a longitudinal axis (106), the power transmission element (103) preferably being a shaft (104) whose axis of rotation (107) forms the longitudinal axis (106), a bearing (112) in which the movable power transmission element (103) is mounted so as to be movable, in particular rotatable and / or translatable, e.g. rotatable, a discharge element (150) which is in electrical contact, e.g. in sliding contact, with a surface (114), e.g. B. to an outer surface (116) of the force transmission element (103) or to an inner surface (212) of a contact element (214), and a demarcation element (118) which separates a first zone (120), in which the bearing (112) is arranged, from a second zone (122), in which the discharge element (150) is in the electrical contact, e.g.Sliding contact to the surface (114).

24. Power transmission arrangement (110) according to claim 23, characterized in that the power transmission arrangement (110) comprises a diverter unit (128), e.g. sealing unit (130), according to one of claims 1 to 19 and / or a diverter arrangement (136), e.g. sealing arrangement (100), according to one of claims 20 to 22, wherein the diverter unit (128), e.g. the sealing unit (130), comprises the diverter element (150) in electrical contact, e.g. in sliding contact, with the surface (114) and wherein the diverter unit (128), e.g. the sealing unit (130), preferably comprising the demarcation element (118) which delimits the first zone (120) from the second zone (122).

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