Connection device

Abstract

The invention relates to a coupling device (4) having a first component and a second component, which are rotatable relative to each other about a rotation axis (18), wherein a first axial section (50) of the first component is supported on a second axial section (52) of the second component via a radial bearing (54) and a lubricating and / or cooling medium (68) can be conveyed outwardly in a radial direction (10) on a first axial side (64) of the radial bearing (54), wherein the radial bearing (54) is supported on the second axial section (52) via a support sleeve (62), which is arranged on the second axial section (52) for connecting the first axial side (64) of the radial bearing (54) to an opposite second axial side (66) while generating at least one intermediate flow channel (74) for the lubricating and / or cooling medium (68).

Description

Technical Field

[0001] The present invention relates to a coupling device having a first component and a second component, which can rotate relative to each other around a rotation axis, wherein a first axial section of the first component is supported on a second axial section of the second component via a rolling bearing and lubricating and / or cooling medium can be transported radially outward on a first axial side of the rolling bearing. Background Art

[0002] A coupling device in the form of a diaphragm clutch is known from practice. The coupling device has a diaphragm carrier on the input side and a diaphragm carrier on the output side, between which a compressible diaphragm group is arranged. In order to eliminate the gap between the two diaphragm carriers as much as possible in the radial direction, the two diaphragm carriers are usually supported relative to each other in a rotatable manner in the radial direction via radial bearings, if possible roller bearings. For this purpose, one diaphragm carrier, in most cases its hub-shaped part, has a first axial section, and the other diaphragm carrier, in most cases its hub-shaped part, has a second axial section, between which a radial bearing is arranged, so that one diaphragm carrier is supported in the radial direction at the other diaphragm carrier via a radial bearing. In order to further ensure the supply of lubricating and / or cooling medium to the diaphragm clutch, lubricating and / or cooling medium can be conveyed from the inner radial direction to the outside at least on the first axial side of the radial bearing. However, it has been shown here that the lubricating and / or cooling medium conveyed on the first axial side of the radial bearing only passes through the radial bearing or rolling bearing in the axial direction to a small extent in order to reach the opposite second axial side of the radial bearing. Thus, for example, the diaphragm pack of a diaphragm clutch can only be insufficiently supplied with lubricant and / or cooling medium due to its design. Therefore, in at least one of the diaphragm carriers, in most cases in the hub of the diaphragm carrier in question, openings for lubricant and / or cooling medium are provided for supplying lubricant and / or cooling medium from the inner radial direction to the outside on a first axial side and on the opposite second axial side of the rolling bearing and thus ensuring the supply of lubricant and / or cooling medium on both axial sides of the rolling bearing.

[0003] The measures described above have proven feasible, but have the disadvantage that, on the one hand, the additional opening in at least one of the diaphragm supports weakens the diaphragm support and is also only relatively small in design, thus limiting the supply of lubrication and / or cooling medium, and on the other hand, the diaphragm support or its hub must be relatively expensive to machine additional openings for lubrication and / or cooling medium. Summary of the invention

[0004] The object of the present invention is therefore to improve a coupling device of this type in such a way that two relatively rotatable components, such as a diaphragm carrier, continue to support each other reliably in the radial direction, while in addition a reliable and sufficient supply of lubrication and / or cooling medium on two mutually opposite axial sides of the radial bearing is ensured with relatively little manufacturing effort.

[0005] This object is achieved by the features specified in claim 1. Advantageous embodiments of the invention are the subject matter of the dependent claims.

[0006] The coupling device for the drive system of a motor vehicle according to the present invention has a first component and a second component, which can rotate relative to each other around an axis of rotation. Therefore, the two mentioned components can be, for example, diaphragm supports on the input side and output side of the coupling device configured as a diaphragm clutch. In this case, not only the first component but also the second component can preferably rotate around the axis of rotation, so that neither of the two mentioned components is a fixed component that cannot rotate around the axis of rotation. The first component has a first axial section, and the second component has a second axial section. The axial section can be understood here as such a section of the component involved, that is, the section extends at least partially in the axial direction to provide a support surface pointing in the radial direction. In addition, a radial bearing is provided, via which the first axial section is supported at the second axial section, and vice versa if possible. In order to supply the coupling device with lubricating and / or cooling medium, the coupling device is designed in such a way that the lubricating and / or cooling medium can be conveyed from the inner radial direction to the outside on the first axial side of the radial bearing, wherein the coupling device is preferably designed in such a way that the conveying in the radial direction to the outside already starts in the radial direction within the radial bearing. The radial bearing is supported at the second axial section via a support sleeve, wherein it can also be mentioned that the radial bearing is indirectly supported at the second axial section in the radial direction. If the radial bearing is to be designed, for example, as a rolling bearing, a bearing sleeve of the rolling bearing can be supported at the support sleeve and the support sleeve can be supported at the second axial section. The support sleeve is arranged at the second axial section for connecting the first axial side of the radial bearing with the opposite second axial side while generating at least one intermediate flow channel for the lubricating and / or cooling medium. In other words, at least one intermediate flow channel is formed between the support sleeve and the second axial section, via which the lubricating and / or cooling medium can pass from the first axial side of the radial bearing to the opposite second axial side when the lubricating and / or cooling medium is conveyed on the first axial side mentioned, in order to achieve a lubricating or cooling effect there as well. Since the at least one flow channel ensures that the lubricating and / or cooling medium is conveyed in suitable quantities from the first axial side of the radial bearing to the opposite second axial side, additional openings in the first and / or second component can also be omitted, thereby significantly simplifying production. Furthermore, the support sleeve also ensures a reliable mutual radial support of the first and second components.

[0007] In order to ensure that a sufficient amount of lubricating and / or cooling medium reaches the second axial side from the first axial side of the radial bearing via the at least one intermediate flow channel, in a preferred embodiment of the coupling device according to the invention, the support sleeve has a capture section which projects beyond the second axial section on the first axial side in the axial direction in such a way that the lubricating and / or cooling medium conveyed outward in the radial direction touches the capture section. In other words, due to the capture section, the cooling and / or lubricating medium conveyed outward in the radial direction can be at least temporarily blocked or braked by the capture section so that the cooling and / or lubricating medium can reach the inlet of the intermediate flow channel. This ensures that the second axial side is supplied with lubricating and / or cooling medium in a particularly reliable manner.

[0008] In order to create a particularly effective capture section of the support sleeve, not only does the capture section protrude in the axial direction beyond the second axial section, but in a particularly preferred embodiment of the coupling device according to the invention, a radially outwardly directed supply opening is provided for supplying the lubricant and / or cooling medium, which is arranged at least partially or completely radially nested with the capture section. The degree of radial nesting - and therefore the degree of axial overlap of the supply opening with the capture section - is important for a more or less good supply of the at least one flow channel with the lubricant and / or cooling medium.

[0009] In an advantageous embodiment of the coupling device according to the invention, the above-mentioned delivery opening for delivering the lubricant and / or cooling medium is configured in the axial direction between the second axial section or the second component on the one hand and the third component of the coupling device on the other hand. The delivery opening is therefore preferably an opening surrounding the circumference, which is created by spacing the second axial section or the second component on the one hand and the third component on the other hand, without having to provide a corresponding opening for delivering the lubricant and / or cooling medium in the second axial section or the second component or the third component, thereby significantly simplifying the production of the coupling device.

[0010] According to another advantageous embodiment of the coupling device according to the invention, the third component mentioned above is designed to fix a different component. In other words, the third component cannot rotate about the rotation axis. Therefore, the third component can be, for example, a fixed or / and fixed support on the housing for an operating device of the coupling device, such as a hydraulic operating device.

[0011] According to a particularly advantageous embodiment of the coupling device according to the invention, the above-mentioned third component is also arranged at least partially to be radially interlocked with the capture section of the support sleeve, whereby the lubricating and / or cooling medium conveyed outward in the radial direction can be even more strongly retained by the capture section of the support sleeve, which in turn leads to a particularly effective supply of the lubricating and / or cooling medium to the at least one intermediate flow channel. Therefore, in this embodiment, the capture section of the support sleeve extends over the conveying opening pointing outward in the radial direction in order to be arranged also at least partially interlocked with the third component.

[0012] In a particularly preferred embodiment of the coupling device according to the invention, the support sleeve further comprises a bearing section arranged at the capture section for intercepting lubricating and / or cooling media that impinges on the capture section in the axial direction. The bearing section projects inwardly beyond the capture section in the radial direction. Accordingly, the capture section in combination with the bearing section produces a radially inwardly directed capture basin for lubricating and / or cooling media that flows outwardly in the radial direction. The bearing section that projects inwardly beyond the capture section in the radial direction is preferably arranged at the end side of the capture section in this embodiment, wherein a one-piece construction of the capture section and the bearing section is further preferred.

[0013] In another advantageous embodiment of the coupling device according to the invention, the capture section and / or the bearing section of the support sleeve are configured obliquely or conically in the direction of the at least one flow channel while deflecting the lubricating and / or cooling medium conveyed outward in the radial direction. Thus, for example, the bearing section can be configured obliquely or conically, while the capture section extends substantially in the axial direction. Alternatively, only the capture section can be configured conically or obliquely, while the bearing section extends substantially in the radial direction or protrudes beyond the capture section. In another design variant, not only the capture section but also the bearing section can be configured obliquely or / and conically. In the latter case, it is also possible that the capture section and the bearing section have the same obliqueness and / or the same taper, so that an exact separation is no longer provided between the capture section and the bearing section. The aforementioned implementation variants ensure in any case a particularly reliable and sufficient supply of lubricating and / or cooling medium to the at least one intermediate flow channel and thus also the second axial side of the radial bearing.

[0014] In order to be able to produce the intermediate flow channel between the support sleeve and the second axial section particularly simply and reliably, in a further advantageous embodiment of the coupling device according to the invention, the support sleeve or the second axial section has at least two radial support projections, which are spaced apart from one another in the circumferential direction and are supported on the second axial section or the support sleeve when the intermediate flow channel is formed. In this embodiment, the at least two radial support projections can therefore be provided, for example, for forming at least two intermediate flow channels on the support sleeve, so that the support projections are supported on the second axial section when the intermediate flow channel is formed. Alternatively, the at least two radial support projections can be provided on the second axial section when the at least two intermediate flow channels are formed, the support projections being supported on the support sleeve. In principle, corresponding radial support protrusions can be provided not only on the support sleeve but also on the axial section, but from a manufacturing technology point of view, it is preferred that corresponding radial support protrusions are provided either on the support sleeve or on the second axial section, while no such radial support protrusions are provided on the other component, namely the second axial section or the support sleeve.

[0015] In another preferred embodiment of the coupling device according to the invention, the radial bearing is arranged to partially interlock radially with the radial support projection, thereby providing an axial overlap region. In this way, a particularly reliable radial support of the radial bearing on the support sleeve and thus of the first component on the second component is ensured. In this regard, it has proven to be advantageous if the radial bearing is arranged to interlock radially with the radial support projection over more than 50% of the axial length of the radial bearing. Ideally, this value is 100%, so that the radial bearing is arranged to completely interlock radially with the radial support projection.

[0016] In a further advantageous embodiment of the coupling device according to the invention, the radial support projection has a greater extension or extension in the axial direction than in the circumferential direction, thereby ensuring not only a secure support of the radial bearing via the radial support projection but also a central flow channel with a relatively large flow cross section.

[0017] In a further advantageous embodiment of the coupling device according to the invention, the radial support projection is designed to taper in the axial direction in order to enable a simple flow through of the lubricating and / or cooling medium. It is preferred that the radial support projection is designed to taper in the direction of the capture section and / or at least on the end side. In principle, the taper can be achieved in any way. In this embodiment, it is preferred that the taper is achieved partially or completely by reducing the extension of the radial support projection in the circumferential direction in order to avoid reducing the support surface of the radial support projection by reducing the extension of the radial support projection in the radial direction.

[0018] In order to enable a targeted further flow of the lubricating and / or cooling medium from the intermediate flow channel, in another preferred embodiment of the coupling device according to the invention, the support sleeve is also supported on a radial section of the second component, which is connected to the at least one flow channel, while producing at least one intermediate radial flow channel for the lubricating and / or cooling medium. Supporting the support sleeve on a radial section of the second component also has the advantage that the support sleeve can be easily transported into its final position during the production of the coupling device, in which the support sleeve is supported on a radial section of the second component, thereby also simplifying the production of the coupling device.

[0019] In order to achieve the support of the support sleeve on the radial section of the second component while generating the at least one radial flow channel, in another preferred embodiment of the coupling device according to the invention, the support sleeve or the radial section has at least two axial support projections, which are spaced apart from each other in the circumferential direction and are supported on the radial section or the support sleeve while forming the intermediate radial flow channel. As already in the case of the radial support projections, the axial support projections can also be arranged either on the support sleeve or on the radial section, wherein in principle it is also possible to arrange corresponding axial support projections not only on the support sleeve but also on the radial section of the second component. In this embodiment, it is also preferred that the number of the axial support projections corresponds to the number of the radial support projections. Alternatively or additionally, it is preferred that the axial support projections are designed as extensions of the radial support projections in order to keep the manufacturing effort low for the case where not only the radial support projections but also the axial support projections are arranged either on the support sleeve or on the radial section.

[0020] In another particularly preferred embodiment of the coupling device according to the invention, the radial bearing can be supported or supported at the axial support projection in the axial direction. Thus, for example, in the case of a radial bearing in the form of a rolling bearing, one of the two bearing sleeves of the rolling bearing can be supported or supported at the axial support projection in the axial direction in order to achieve the support of the rolling bearing in the axial direction via the axial support projection at the radial section of the second component. For this purpose, the axial support projection can, for example, protrude beyond the support sleeve in the radial direction. In order to achieve a particularly uniform support of the radial bearing at the axial support projection in the axial direction, it is further preferred in this embodiment that this is achieved with a circumferentially closed radial flange of the support sleeve inserted in the middle.

[0021] In a further advantageous embodiment of the coupling device according to the invention, the supporting sleeve is designed in one piece. Thus, the capture section, the load-bearing section, the radial supporting projections and the axial supporting projections, as well as the circumferential radial flange, if applicable, are designed in one piece.

[0022] According to a further advantageous embodiment of the coupling device according to the invention, the supporting sleeve is pressed onto the second axial section in order to provide a secure and easily producible, preferably rotationally fixed, fixation of the supporting sleeve on the second axial section of the second component.

[0023] In another advantageous embodiment of the coupling device according to the invention, the supporting sleeve on the one hand and the second axial section or the second component on the other hand are made of different materials, preferably of materials with different strengths and / or hardnesses. It has been shown that this ensures a particularly simple assembly of the second component, radial bearing and supporting sleeve.

[0024] In principle, the radial bearing can be formed by any bearing which, on the one hand, enables reliable mutual support of the two components in the radial direction and, on the other hand, enables a relative rotation between the two components that is as unimpeded as possible. Therefore, the radial bearing can be formed, for example, by a sliding bearing. This has the advantage that the support sleeve can also be constructed for the sliding surface of the radial bearing in the form of a sliding bearing. However, the sliding bearing can alternatively also have a separate ring for constructing the sliding surface, which is then arranged or can be arranged at the support sleeve. This variant is also advantageous, in particular because the rolling ring is particularly based on the good sliding properties of the sliding surface in order to construct the sliding surface of the sliding bearing, which can be better achieved by separating the rolling ring and the support sleeve if possible. However, in a particularly advantageous embodiment of the coupling device according to the invention, the radial bearing is constructed as a rolling bearing. Here, the bearing sleeve of the radial bearing can also be formed by the support sleeve itself. Alternatively, the bearing sleeve can be formed separately from the support sleeve and fastened to it, which, as already mentioned in the case of the plain bearing, can be advantageous, in particular because this takes into account different functions, namely, on the one hand, the rolling elements are supported and guided by the bearing sleeve and on the other hand, the bearing is reliably supported on the second axial section and, if necessary, also on the radial section of the second component. In this respect, it is simpler from a production point of view to produce the bearing sleeve and the support sleeve of the rolling bearing separately from one another and only then connect them to one another, wherein it is also preferred here to use different materials, such as materials with different strengths and / or hardnesses, for the bearing sleeve on the one hand and the support sleeve on the other hand.

[0025] In a further preferred embodiment of the coupling device according to the invention, the coupling device is a wet-running multi-disk clutch with a disk package, so that the lubricating and / or cooling medium also has to be supplied to the disk package.

[0026] In another preferred embodiment of the coupling device according to the present invention, the lubricating and / or cooling medium guided to the second axial side of the radial bearing via the at least one intermediate flow channel can be delivered or delivered to the diaphragm group in order to ensure reliable and complete lubrication and / or cooling of the diaphragm group of the diaphragm clutch despite the delivery of the lubricating and / or cooling medium on the first axial side of the radial bearing.

[0027] According to another preferred embodiment of the coupling device according to the invention, the coupling device mentioned above in the form of a multi-disk clutch is designed as a concentric double-disk clutch with a further multi-disk set. It is preferred that the further multi-disk set is radially nested with the first-mentioned multi-disk set in such a way that the lubricating and / or cooling medium supplied to the multi-disk set via the at least one flow channel can then be supplied or supplied to the further multi-disk set. The at least one intermediate flow channel between the support sleeve on the one hand and the second axial section of the second component on the other hand thus ensures reliable lubrication and / or cooling of both multi-disk sets.

[0028] According to another advantageous embodiment of the coupling device according to the invention, the first component is a first diaphragm carrier of the diaphragm clutch or a hub of such a first diaphragm carrier, and the second component is a second diaphragm carrier of the diaphragm clutch or a hub of such a second diaphragm carrier. The first diaphragm carrier is preferably an outer diaphragm carrier. The second diaphragm carrier is preferably an inner diaphragm carrier. In this embodiment, it is also preferred that the first diaphragm carrier is configured as a component on the input side of the diaphragm clutch and the second diaphragm carrier is configured as a component on the output side of the diaphragm clutch. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further explained below with the aid of exemplary embodiments with reference to the accompanying drawings, in which:

[0030] Figure 1 A side view of a coupling device within a drive train of a motor vehicle is shown in section,

[0031] Figure 2 The enlarged and cross-sectional view shows the Figure 1 Side view of the support sleeve,

[0032] Figure 3 In the direction of arrow A, the Figure 2 A front view of the support sleeve, and

[0033] Figure 4 Shows the Figures 1 to 3 A perspective view of a support sleeve. DETAILED DESCRIPTION

[0034] Figure 1 The drive train 2 is shown with a coupling device 4 . Opposite axial directions 6 , 8 , opposite radial directions 10 , 12 and opposite circumferential directions 14 , 16 are indicated by corresponding arrows, wherein the coupling device 4 is rotatable about an axis of rotation 18 extending in the axial directions 6 , 8 .

[0035] The coupling device 4 is designed as a wet-running, concentric double-disk clutch. The coupling device 4 thus has an input side 20, which is directly or indirectly in rotationally synchronous connection with an output side 24 of a drive unit (not shown in detail), such as an internal combustion engine, via a switchable separating clutch 22. The input side 20 mentioned has a first outer diaphragm carrier 26 and a second outer diaphragm carrier 28, wherein the two outer diaphragm carriers 26, 28 have a common hub 30 located on the inside in the radial direction 12.

[0036] Furthermore, the coupling device 4 has a first output side 32 and a second output side 34. The first output side 32 is essentially formed by a first inner diaphragm carrier 36 and a first output hub 38 connected to the first inner diaphragm carrier 36 in a rotationally fixed manner. On the other hand, the second output side 34 is essentially formed by a second inner diaphragm carrier 40 and a second output hub 42 arranged on the inside in the radial direction 12. A first diaphragm group 44 is arranged between the first outer diaphragm carrier 26 and the first inner diaphragm carrier 36, which can be actuated by a hydraulic actuation device 46, so that the first diaphragm group is used for a selective rotationally synchronous coupling between the input side 20 and the first output side 32. Furthermore, a second diaphragm group 48 is arranged between the second outer diaphragm carrier 28 and the second inner diaphragm carrier 40, which can also be actuated by a hydraulic actuation device 46, so that the second diaphragm group 48 is used for a selective rotationally synchronous coupling between the input side 20 and the second output side 34. As already indicated above, the coupling device 4 is designed as a concentric double-disk clutch, wherein the first and second disk packages 44 , 48 are arranged at least partially nested within one another in radial directions 10 , 12 .

[0037] The input side 20 together with the outer diaphragm carrier 26, 28 and the hub 30 as well as the first output side 32 can be rotated about the rotation axis 18 on the one hand and can be rotated relative to each other about the rotation axis 18 on the other hand. The hub 30 therefore has a first axial section 50 and the first output hub 38 has a second axial section 52, wherein the two axial sections 50, 52 are supported rotatably in radial directions 10, 12 relative to each other via a radial bearing 54. The radial bearing 54 is designed as a rolling bearing, which has a first bearing sleeve 56 associated with the first axial section 50 and a second bearing sleeve 58 associated with the second axial section 52, between which a plurality of rolling bodies 60 are arranged. However, in this case, the second bearing sleeve 58 of the radial bearing 54 is not or is not only supported directly on the first output hub 38 or its second axial section 52, but rather via a support sleeve 62, to which further reference will be made later. Figure 1 Combination Figures 2 to 4 Discuss the support sleeve.

[0038] In each case, the radial bearing 54 has a first axial side 64 lying in the axial direction 6, i.e., a region next to the radial bearing 54 in the axial direction 8, and a second axial side 66 opposite the first axial side 64, i.e., a region next to the radial bearing 54 in the axial direction 6. Here, a lubricating and / or cooling medium 68 can be supplied from the inside to the outside in the radial direction 10 on the first axial side 64 of the radial bearing 54. In order to realize a corresponding supply, a supply opening 70 for the lubricating and / or cooling medium 68 pointing outward in the radial direction 10 is provided. Here, the supply opening 70 is formed in the axial directions 6, 8 between the first output hub 38 or the second axial section 52 on the one hand and another component 72 of the coupling device 4 on the other hand, which is designed as a stationary component 72 and is therefore designed as a component 72 that cannot rotate about the rotation axis 18. In the embodiment shown, the other component 72 is formed by the housing of the hydraulic actuating device 46, which housing can be fastened, for example, to a transmission housing (not shown in detail) or another stationary housing. Thus, a supply opening 70 is created which is designed to be closed around the circumference 14 , 16 between the second axial section 52 and a component 72 of the hydraulic actuating device 46 in order to enable a lubricating and / or cooling medium flow 68 to flow outward in the radial direction 10 .

[0039] The second axial side 66 of the radial bearing 54 is supplied with lubricant and / or cooling medium 68 starting from the first axial side 64 , without any possible opening in the second axial section 52 or the first output hub 38 , via which the second axial side 66 could possibly be supplied directly with lubricant and / or cooling medium 68 .

[0040] In order to supply the second axial side 66 with lubrication and / or cooling medium 68 independently of possible openings in the first output hub 38 or independently of a reduction in the flow through the radial bearing 54 between the two bearing sleeves 56 , 58 in the axial direction 6 , the support sleeve 62 already mentioned above is arranged on the second axial section 52 of the first output hub 38 while producing at least one axial flow channel 74 for connecting the first axial side 64 of the radial bearing 54 to the opposite second axial side 66 . In this case, the support sleeve 62 is pressed onto the second axial section 52 of the first output hub 38 in the axial direction 6 in order to achieve a rotationally fixed connection between the support sleeve 62 and the first output hub 38 . It has proven to be advantageous if, on the one hand, the support sleeve 62 and, on the other hand, the second axial section 52 or the first output hub 38 are made of different materials, preferably of materials with different strengths and / or hardnesses. Referring hereinafter to Figures 2 to 4 The support sleeve 62 of one-piece construction is further described.

[0041] The support sleeve 62 extends in the axial directions 6, 8. Therefore, the support sleeve 62 has a support section 76 extending in the axial directions 6, 8. A plurality of radial support projections 78 are provided on the side of the support section 76 pointing inward in the radial direction 12, wherein the radial support projections 78 are evenly spaced apart from one another in the circumferential directions 14, 16. Therefore, the support sleeve 62 can be supported inwardly in the radial direction 12 or supported at the second axial section 52 of the first output hub 38 via the radial support projections 78 while constructing a plurality of axial flow channels 74. Figure 2 and 4 It can be seen in FIG. 1 that the radial support projection 78 has a greater extent in the axial directions 6 , 8 than in the circumferential directions 14 , 16 . Figure 2 8 by means of the length a in the axial direction 6 , 8 and the width b in the circumferential direction 14 , 16 .

[0042] The capture section 80 of the support sleeve 62 adjoins the support section 76 in the axial direction 8. In principle, the radial support projection 78 can also extend to the side of the capture section 80 pointing inwardly in the radial direction 12, but this is omitted in the embodiment shown, in particular because the capture section 80 is used to capture the lubricating and / or cooling medium 68 described further below, and a larger volume can be achieved by omitting the radial support projection on the inner side. In addition, a particularly lightweight support sleeve 62 is created by omitting the radial support projection on the side of the capture section 80 pointing inwardly in the radial direction 12. The capture section 80 extends essentially in the axial direction 8 in order to transition there into a load-bearing section 82 arranged at the end side of the capture section 80. The bearing section 82 serves to retain the lubricating and / or cooling medium 68 described further below that impinges on the capture section 80 in the axial direction 8 , wherein the bearing section 82 , which is designed as a closed annular support in the circumferential directions 14 , 16 , projects inwardly beyond the capture section 80 in the radial direction 12 for this purpose.

[0043] Although not shown in detail, the capture section 80 and / or the support section 82 are designed to be inclined or conical in the direction of at least one axial flow channel 74 , thus in the axial direction 6 , while deflecting the lubricating and / or cooling medium 68 supplied outward in the radial direction 10 .

[0044] In the axial direction 6, a plurality of axial support projections 84 adjoin the support section 76 of the support sleeve 62, which are spaced apart from one another in the circumferential directions 14, 16 and project beyond the support section 76 of the support sleeve 62 in the axial direction 6. The number of axial support projections 84 corresponds to the number of radial support projections 78, wherein the axial support projections 84 are designed as extensions of the radial support projections 78 in the axial direction 6 in the embodiment shown. Figures 2 to 4It can be seen that the axial support projection 84 projects outward in the radial direction 10 beyond the side of the support section 76 pointing outward in the radial direction 10 .

[0045] Figure 1 The support sleeve 62 is shown in the state in which it is installed in the coupling device 4. As already explained above, the support sleeve 62 is pressed onto the first output hub 38 in the axial direction 6, wherein the radial support projections 78 are supported in the radial direction 12 at the second axial section 52, while creating a plurality of intermediate axial flow channels 74. Furthermore, the support sleeve 62 is pushed onto the first output hub 38 in the axial direction 6 to such an extent that the axial support projections 84 are supported in the axial direction 6 at the radial section 86 of the first output hub 38 or the first inner diaphragm carrier 36. In this case, the support sleeve 62 is thus supported by means of the axial support projections 84 at the radial section 86, while creating a plurality of radial flow channels 88 for the lubricating and / or cooling medium 68, wherein the radial flow channels 88 are in flow connection with the axial flow channels 74.

[0046] from Figure 1 , it can also be seen that the radial bearing 54 is arranged to be completely nested with the radial support projection 78 in the radial directions 10, 12 in order to achieve a particularly reliable support of the radial bearing 54 via the support sleeve 62 on the second axial section 52 of the first output hub 38. In principle, the radial bearing 54 should be arranged to be at least partially, preferably more than 50% of the axial length of the radial bearing 54, radially nested with the radial support projection 78, wherein complete radial nesting is preferred. In addition, the radial bearing 54 can be supported or supported on the radial section 86 indirectly in the axial direction 6 via the support sleeve 62. More precisely, the second bearing sleeve 58 arranged on the support section 76 of the support sleeve 62 is supported in the axial direction 6 on the axial support projection 84 of the support sleeve 62 that protrudes outwardly beyond the support section 76 in the radial direction 10, wherein the latter is in turn supported in the axial direction 6 on the radial section 86 as already explained. Basically, a radial collar which is closed around the periphery in the circumferential directions 14 , 16 and projects outward in the radial direction 10 can also be provided on the support sleeve 62 for this purpose in order to indirectly support the second bearing sleeve 58 in the axial direction 6 on the radial section 86 .

[0047] In accordance with Figure 1In the installed state of the support sleeve 62, the capture section 80 protrudes in the axial direction 8 beyond the second axial section 52 and beyond the axial end 90 of the first output hub 38, so that the lubricating and / or cooling medium 68 conveyed outward in the radial direction 10 hits the capture section 80 from the inside. The above-mentioned delivery opening 70 is arranged here to at least partially, here completely, nest with the capture section 80 in the radial directions 10, 12, in order to retain or capture as much of the lubricating and / or cooling medium 68 conveyed outward in the radial direction 10 as possible. Here, the capture section 80 also extends in the axial direction 8 beyond the position of the delivery opening 70, so that the above-mentioned component 72 of the hydraulic actuating device 46 is also arranged to at least partially nest with the capture section 80 in the radial directions 10, 12. In other words, the substantially tubular component 72 is sunk in the axial direction 6 into the capture section 80 of the support sleeve 62 in order to achieve radial internesting and thus particularly effective retention or capture of the lubricating and / or cooling medium 68 by the capture section 80 .

[0048] Refer to the following Figures 1 to 4 The working principle of the support sleeve 62 is further explained again.

[0049] From the transmission 92 of the drive train 2, which is only schematically indicated, a lubricating and / or cooling medium delivery 68 is realized in the axial direction 6. It is advantageous here that the lubricating and / or cooling medium delivery 68 is realized between the component 72 of the actuating device 46 and the first output side 32 or one of the first transmission input shafts 94 associated with the first output hub 38. The lubricating and / or cooling medium 68 can thus be delivered via the annular space between the first transmission input shaft 94 and the component 72, which annular space can in principle also be a support tube. The lubricating and / or cooling medium 68 delivered in this way flows outwards in the radial direction 10 in the region of the delivery opening 70 surrounding the circumference 14, 16. Here, the lubricating and / or cooling medium 68 hits the capture section 80 of the support sleeve 62, so that the lubricating and / or cooling medium 68 is blocked or retained there. The lubricating and / or cooling medium 68 retained in this way can now flow along the capture section 80 in the axial direction 8 and in the axial direction 6. The flow in the axial direction 8 is blocked at least to a certain extent by the above-described load-bearing section 82 of the support sleeve 62, while the lubricating and / or cooling medium 68 flowing in the axial direction 6 along the capture section 80 reaches the axial flow channel 74 in order to flow from the first axial side 64 of the radial bearing 54 to the opposite second axial side 66 while bypassing the radial bearing.

[0050] In order to ensure a simple flow of the lubricating and / or cooling medium 68 into the axial flow channel 74, the radial support projection 78, although not shown in the figure, is designed to taper at least at the end in the direction of the capture section 80 or in the axial direction 8. Preferably, the aforementioned taper is achieved partially or completely by reducing the extent of the radial support projection 78 in the circumferential directions 14, 16, i.e. by reducing the width b. Following the axial flow channel 74, the lubricating and / or cooling medium 68 passes into the radial flow channel 88 in order to flow again in the radial direction 10 on the second axial side 66.

[0051] If available from Figure 1 As can be seen in FIG. 1 , the lubricating and / or cooling medium 68 guided from the first axial side 64 to the second axial side 66 of the radial bearing 54 via the axial flow channel 74 and the radial flow channel 88 can be supplied or supplied to the first diaphragm group 44, while the portion of the lubricating and / or cooling medium 68 that flows in the axial direction 8 along the capture section 80 and over the load-bearing section 82 can then flow outward in the radial direction 10 in order to lubricate and / or cool the components of the actuating device 46. In the embodiment shown, this relates in particular to the two bearings 96, 98 shown for synchronously decoupling the rotation of the force-transmitting elements 100, 102 from the actuating pistons 104, 106 of the hydraulic actuating device 46.

[0052] In addition, the lubricating and / or cooling medium 68 guided from the first axial side 64 to the second axial side 66 (which can be conveyed or delivered outwardly to the first diaphragm group 44 in the radial direction 10) can then be conveyed or delivered to the second diaphragm group 48, which can be supported by additional openings 108 in the first outer diaphragm support 26 and the second inner diaphragm support 40, which openings (which are arranged in the diaphragm-bearing sections of the corresponding diaphragm support) enable the lubricating and / or cooling medium to be conveyed to the corresponding diaphragm group as directly as possible.

[0053] Reference Numbers List

[0054] 2 Drive system

[0055] 4 Coupling device

[0056] 6 Axial direction

[0057] 8 Axial direction

[0058] 10 Radial direction

[0059] 12 Radial direction

[0060] 14 Circumferential

[0061] 16 Circumferential

[0062] 18 Rotation axis

[0063] 20 Input side

[0064] 22 Disengagement clutch

[0065] 24 Output side

[0066] 26 First outer membrane stent

[0067] 28 Second outer membrane stent

[0068] 30 Hub

[0069] 32 First output side

[0070] 34 Second output side

[0071] 36 First Endometrial Stent

[0072] 38 First output hub

[0073] 40 Second endocardial stent

[0074] 42 Second output hub

[0075] 44 First diaphragm group

[0076] 46 Hydraulic control device

[0077] 48 Second diaphragm group

[0078] 50 First axial section

[0079] 52 Second axial section

[0080] 54 Radial bearings

[0081] 56 First bearing sleeve

[0082] 58 Second bearing sleeve

[0083] 60 Rolling element

[0084] 62 Support sleeve

[0085] 64 First axial side

[0086] 66 Second axial side

[0087] 68 Lubricating and / or cooling medium

[0088] 70 Delivery opening

[0089] 72 Additional components

[0090] 74 Axial flow channel

[0091] 76 Support Section

[0092] 78 Radial support protrusion

[0093] 80 Capture Segment

[0094] 82 load-bearing section

[0095] 84 Axial support protrusion

[0096] 86 Radial Segment

[0097] 88 Radial Flow Channel

[0098] 90 Axial end

[0099] 92 Transmission

[0100] 94 First transmission input shaft

[0101] 96 Bearings

[0102] 98 Bearings

[0103] 100 Force transmission element

[0104] 102 force transmission element

[0105] 104 Operating piston

[0106] 106 Operating piston

[0107] 108 Opening

[0108] a Length

[0109] b Width

Claims

1. A coupling device (4) comprising a first component and a second component, wherein the first component and the second component are rotatable relative to each other about a rotation axis (18), wherein: A first axial section (50) of the first component is supported in a radial direction on a second axial section (52) of the second component via a radial bearing (54), and a lubricating and / or cooling medium (68) can be transported radially outward on a first axial side (64) of the radial bearing (54), characterized in that the radial bearing (54) is supported in a radial direction on the second axial section (52) via a support sleeve (62), and the support sleeve is arranged on the second axial section (52) to connect the first axial side (64) of the radial bearing (54) with an opposite second axial side (66) while generating at least one intermediate flow channel (74) for the lubricating and / or cooling medium (68).

2. The coupling device (4) according to claim 1, characterized in that: The support sleeve (62) has a capture section (80) which projects beyond the second axial section (52) in the axial direction (6, 8) on the first axial side (64) such that a lubricating and / or cooling medium (68) conveyed outward in the radial direction contacts the capture section (80).

3. The coupling device (4) according to claim 2, characterized in that: A delivery opening (70) pointing outward in the radial direction is provided for delivering the lubricating and / or cooling medium (68), the delivery opening being arranged at least partially or completely to be radially nested with the capture section (80) or / and constructed in the axial direction (6, 8) between the second axial section (52) or the second component and a third component (72) of the coupling device (4).

4. The coupling device (4) according to claim 3, characterized in that The third component (72) is configured as a stationary component and / or is at least partially arranged to be radially nested with the capture section (80).

5. The coupling device (4) according to claim 2, characterized in that: The support sleeve (62) further comprises a bearing section (82) arranged on the capture section (80) for retaining lubricating and / or cooling medium (68) impinging on the capture section (80) in an axial direction (6, 8), the bearing section protruding inwardly beyond the capture section (80) in a radial direction, or / and the capture section (80) and / or the bearing section (82) being configured obliquely or conically in the direction of the at least one flow channel (74) while deflecting the lubricating and / or cooling medium (68) conveyed outwardly in a radial direction.

6. The coupling device (4) according to claim 5, characterized in that The carrying section (82) is arranged at the end side of the capture section (80).

7. The coupling device (4) according to any one of claims 2 to 6, characterized in that The support sleeve (62) or the second axial section (52) has at least two radial support projections (78) which are spaced apart from one another in the circumferential direction (14, 16) and are supported on the second axial section (52) or the support sleeve (62) while forming the intermediate flow channel (74).

8. The coupling device (4) according to claim 7, characterized in that The radial bearing (54) is arranged to partially or completely radially nest with the radial support protrusion (78).

9. The coupling device (4) according to claim 8, characterized in that The radial bearing (54) is arranged to be radially internested with the radial support protrusion (78) over more than 50% of the axial length of the radial bearing (54).

10. The coupling device (4) according to claim 7, characterized in that The radial support projection (78) has a greater extent in the axial direction (6, 8) than in the circumferential direction (14, 16) and / or is designed to taper in the axial direction (6, 8).

11. The coupling device (4) according to claim 10, characterized in that The radial support projection (78) is designed to taper in the direction of the capture section (80) and / or at least on the end side.

12. The coupling device (4) according to claim 10 or 11, characterized in that The tapering is partially or completely caused by a reduction in the extent of the radial support projection (78) in the circumferential direction (14, 16).

13. The coupling device (4) according to claim 7, characterized in that The support sleeve (62) is also supported on a radial section (86) of the second component, producing at least one central radial flow channel (88) for the lubricating and / or cooling medium (68), which is connected to the at least one central flow channel (74).

14. The coupling device (4) according to claim 13, characterized in that The support sleeve (62) or the radial section (86) has at least two axial support projections (84) which are spaced apart from one another in the circumferential direction (14, 16) and are supported on the radial section (86) or the support sleeve (62) while forming the central radial flow channel (88).

15. The coupling device (4) according to claim 14, characterized in that The number of the axial support projections (84) corresponds to the number of the radial support projections (78) and / or the axial support projections (84) are designed as extensions of the radial support projections (78).

16. The coupling device (4) according to claim 14, characterized in that The radial bearing (54) is supported or can be supported in the axial direction (6, 8) at the axial support projection (84).

17. The coupling device (4) according to claim 16, characterized in that The radial bearing (54) is supported or can be supported in the axial direction (6, 8) on the axial support projection (84) with the interposition of a radial collar of the support sleeve (62) which is closed in the circumferential direction (14, 16).

18. A coupling device (4) according to any one of claims 1 to 6, characterized in that The support sleeve (62) is designed as a single piece and / or is pressed onto the second axial section (52) and / or the support sleeve (62) and the second axial section (52) or the second component are made of different materials and / or the radial bearing (54) is designed as a rolling bearing.

19. The coupling device (4) according to claim 18, characterized in that The supporting sleeve (62) and the second axial section (52) or the second component are manufactured from materials having different strengths and / or hardnesses.

20. A coupling device (4) according to any one of the preceding claims 1 to 6, characterised in that The coupling device (4) is a wet-running multi-disk clutch having a disk package (44).

21. The coupling device (4) according to claim 20, characterized in that The lubricating and / or cooling medium (68) which is guided to the second axial side (66) of the radial bearing (54) via the at least one central flow channel (74) is supplied or can be supplied to the diaphragm package (44).

22. The coupling device (4) according to claim 20, characterized in that The diaphragm clutch is a concentric double diaphragm clutch having another diaphragm group (48).

23. The coupling device (4) according to claim 22, characterized in that The further diaphragm group (48) is radially nested with the diaphragm group (44) in such a way that the lubricating and / or cooling medium (68) supplied to the diaphragm group (44) via the at least one intermediate flow channel (74) is subsequently supplied or can be supplied to the further diaphragm group (48).

24. The coupling device (4) according to claim 20, characterized in that The first component is a first diaphragm support of the diaphragm clutch or a hub-shaped component thereof, and the second component is a second diaphragm support of the diaphragm clutch or a hub-shaped component thereof.

25. The coupling device (4) according to claim 24, characterized in that The first component is an outer membrane support (26) or a hub-shaped component thereof.

26. The coupling device (4) according to claim 24, characterized in that The second component is an endo-lambda stent (36) or a hub-shaped component thereof.

27. The coupling device (4) according to claim 24, characterized in that The first diaphragm carrier is designed as a component of the input side (20) of the multi-disk clutch and the second diaphragm carrier is designed as a component of the output side (32) of the multi-disk clutch.

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