DE102018008061A1 - Coupling device - Google Patents

Abstract

The invention relates to a coupling device (4) with a first component and a second component, which can be rotated relative to one another about an axis of rotation (18), a first axial section (50) of the first component via a radial bearing (54) on a second axial section (52) of the second component and a lubricant and / or coolant (68) on a first axial side (64) of the radial bearing (54) in the radial direction (10) can be supplied to the outside, the radial bearing (54) via a support sleeve (62) is supported on the second axial section (52), which creates at least one intermediate flow channel (74) for the lubricant and / or coolant (68) for connecting the first axial side (64) to the opposite second axial side (66) of the radial bearing (54) is attached to the second axial section (52).

Description

The present invention relates to a coupling device with a first component and a second component, which are rotatable relative to one another about an axis of rotation, a first axial section of the first component being supported by a roller bearing on a second axial section of the second component and a lubricant and / or coolant on the first axial side of the rolling bearing can be fed outwards in the radial direction.

Clutch devices in the form of multi-plate clutches are known from practice. These have an input-side plate carrier and an output-side plate carrier, between which a compressible plate pack is arranged. In order to largely suppress play between the two disk carriers in the radial direction, they are usually supported against one another in the radial direction so as to be rotatable relative to one another via a radial bearing, possibly a roller bearing. For this purpose, the one disk carrier, usually its hub, has a first axial section, while the other disk carrier, mostly its hub, has a second axial section, between which the radial bearing is arranged, so that the one disk carrier on the radial bearing in the radial direction the other disk carrier is supported. In addition, to ensure the supply of the multi-plate clutch with a lubricant and / or coolant, at least on a first axial side of the radial bearing, a lubricant or / and coolant can be supplied from the inside in the radial direction to the outside. However, it has been shown that the lubricant and / or coolant supplied on the first axial side of the radial bearing only passes through the radial bearing or roller bearing in the axial direction to a small extent in order to reach the opposite second axial side of the radial bearing. So z. B. the disk pack of the disk clutch - depending on the structure of the same - are only insufficiently supplied with lubricant and / or coolant. It has therefore become customary to provide openings for the lubricant and / or coolant in at least one of the disk carriers, usually in the hub of the disk carrier concerned, in order to on the first axial side and the opposite second axial side of the roller bearing from the inside in the radial direction to the outside Supply lubricant or / and coolant and thus ensure the lubricant or / and coolant supply on both axial sides of the rolling bearing.

The measure described above has proven itself, but is disadvantageous insofar as, on the one hand, the additional openings in at least one of the plate carriers weaken the plate carrier and, moreover, are only relatively small, so that a lubricant and / or coolant supply is restricted, and on the other hand, a relatively complex machining of the disk carrier or its hub with the additional openings for the lubricant and / or coolant is necessary.

It is therefore an object of the present invention to further develop a coupling device of the generic type in such a way that the two components which can be rotated relative to one another, for example plate carriers, are still securely supported on one another in the radial direction, while moreover providing a safe and sufficient supply of lubricant and / or coolant two opposite axial sides of the radial bearing should be ensured with relatively little manufacturing effort.

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

The coupling device according to the invention for the drive train of a motor vehicle has a first component and a second component which can be rotated relative to one another about an axis of rotation. For example, the two components mentioned can be the input-side and output-side disk carriers of a clutch device designed as a disk clutch. Both the first component and the second component are preferably rotatable about the axis of rotation, so that neither of the two components mentioned is a fixed component that cannot be rotated about the axis of rotation. The first component has a first axial section, while the second component has a second axial section. An axial section is to be understood here as a section of the component in question which extends at least partially in the axial direction in order 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 on the second axial section, and vice versa if necessary. In order to supply the coupling device with a lubricant and / or coolant, it is designed such that a lubricant or / and coolant can be supplied from the inside in a radial direction to the outside on a first axial side of the radial bearing, the coupling device preferably being designed in this way is that the supply in the radial direction to the outside already begins in the radial direction within the radial bearing. The radial bearing is supported on the second axial section via a support sleeve, it also being possible to speak of indirect support of the radial bearing in the radial direction on the second axial section. If the radial bearing is designed, for example, as a roller bearing, then one bearing shell of the roller bearing could be attached the support sleeve and the support sleeve can be supported on the second axial section. The support sleeve is attached to the second axial section to create at least one intermediate flow channel for the lubricant and / or coolant for connecting the first axial side to the opposite second axial side of the radial bearing. In other words, at least one intermediate flow channel is formed between the support sleeve and the second axial section, via which the lubricant and / or coolant when said lubricant or / and coolant is supplied on the first axial side from the first axial side to the opposite second axial side of the Radial bearings can reach to achieve a lubricating or cooling effect there as well. Thanks to the at least one flow channel, a supply of lubricant and / or coolant from the first axial side to the opposite second axial side of the radial bearing is ensured in suitable quantities, moreover, additional openings within the first or / and second component can be dispensed with, so that the Manufacturing is significantly simplified. Secure radial support of the first and second components against one another is also ensured by the support sleeve.

In order to ensure that a sufficient amount of lubricant and / or coolant passes through the at least one intermediate flow channel from the first axial side to the second axial side of the radial bearing, in a preferred embodiment of the coupling device according to the invention the support sleeve has a collecting section which is on the first axial side protrudes in the axial direction beyond the second axial section in such a way that the lubricant and / or coolant supplied to the outside in the radial direction hits the collecting section. In other words, thanks to the collecting section, the coolant and / or lubricant supplied to the outside in the radial direction can be at least temporarily jammed or braked by the collecting section, so that it can reach the entrance of the intermediate flow channel. This ensures a particularly secure supply of lubricant and / or coolant to the second axial side as well.

In order to create a particularly effective collecting section of the support sleeve, it not only protrudes in the axial direction over the second axial section, but in a particularly preferred embodiment of the coupling device according to the invention there is in fact a supply opening pointing outwards in the radial direction for supplying the lubricant or / and coolant provided, which is arranged at least partially or completely radially nested with the collecting section. The dimension of the radial nesting - hence the dimension of the axial overlap of the feed opening with the collecting section - is decisive for a more or less good supply of the at least one flow channel with lubricant or / and coolant.

In an advantageous embodiment of the coupling device according to the invention, the aforementioned feed opening is designed for supplying the lubricant and / or coolant in the axial direction between the second axial section or the second component on the one hand and a third component of the coupling device on the other hand. The feed opening is preferably a circumferential opening which is created by the spacing of the second axial section or the second component on the one hand from the third component on the other hand, without corresponding openings in the second axial section or second component or the third component would have to be provided for supplying the lubricant and / or coolant, whereby the manufacture of the coupling device is significantly simplified.

According to a further advantageous embodiment of the coupling device according to the invention, the aforementioned third component is designed as a fixed component. In other words, the third component cannot be rotated about the axis of rotation. The third component can be, for example, the standing and / or housing-fixed support for an actuating device of the coupling device, for example a hydraulic actuating device.

According to a particularly advantageous embodiment of the coupling device according to the invention, the aforementioned third component is furthermore at least partially arranged radially nested with the collecting section of the support sleeve, whereby an even stronger accumulation of the lubricant and / or coolant supplied in the radial direction outwards is possible through the collecting section of the support sleeve is, which in turn brings about a particularly effective supply of the at least one intermediate flow channel with lubricant and / or coolant. In this embodiment, the collecting section of the support sleeve therefore extends beyond the feed opening pointing outward in the radial direction in order to be arranged at least partially nested with the third component.

In a particularly preferred embodiment of the coupling device according to the invention, the support sleeve also has a retaining section arranged on the collecting section for holding back the lubricant or / and coolant impinging on the collecting section in the axial direction. The retaining section protrudes inward in the radial direction beyond the collecting section. Analogously, the collecting section in conjunction with the retaining section creates an in radial inward-facing catch basin for the lubricant or / and coolant flowing outward in the radial direction. In this embodiment, the retaining section projecting radially inward beyond the collecting section is preferably arranged on the end side of the collecting section, wherein an integral design of the collecting section and retaining section is further preferred.

In a further advantageous embodiment of the coupling device according to the invention, the collecting section and / or the retaining section of the support sleeve is inclined or conical in the direction of the at least one flow channel while deflecting the lubricant or / and coolant supplied to the outside in the radial direction. For example, the retaining section can be inclined or conical, while the collecting section extends essentially in the axial direction. Alternatively, only the collecting section can be conical or inclined, while the retaining section extends essentially in the radial direction or projects in this above the collecting section. In a further embodiment variant, both the collecting section and the retaining section could be inclined or / and conical. In the latter case, it is also possible for the collecting section and the retaining section to have the same inclination or / and the same taper, so that there is no longer an exact separation between the collecting section and the retaining section. In any case, a particularly safe and sufficient supply of the at least one intermediate flow channel and thus also the second axial side of the radial bearing with lubricant and / or coolant is ensured by the mentioned embodiment variants.

In order to be able to produce the intermediate flow channel between the support sleeve and the second axial section in a particularly simple and reliable manner, 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 in the circumferential direction and on the second axial section or the support sleeve are supported to form the intermediate flow channels. In this embodiment, for example, the at least two radial support projections for forming at least two intermediate flow channels can be provided on the support sleeve, for example, so that they are supported on the second axial section to form the intermediate flow channels. Alternatively, the at least two radial support projections can be provided on the second axial section with the formation of at least two intermediate flow channels, so that the support projections are supported on the support sleeve. In principle, corresponding radial support projections could also be provided both on the support sleeve and on the axial section, but from a production point of view it is preferred if corresponding radial support projections are provided either on the support sleeve or on the second axial section, while on the other component, i.e. the second axial section or the support sleeve, no such radial support projections are provided.

In a further preferred embodiment of the coupling device according to the invention, the radial bearing is partially radially nested with the radial support projections, so that there is an axial overlap area. In this way, a particularly secure radial support of the radial bearing on the support sleeve and therefore of the first component on the second component is ensured. In this context, it has proven to be advantageous if the radial bearing is arranged radially nested with the radial support projections for more than 50% of the axial length of the radial bearing. Ideally, this value is 100%, so that the radial bearing is completely radially nested with the radial support projections.

In a further advantageous embodiment of the coupling device according to the invention, the radial support projections have a greater extent in the axial direction than in the circumferential direction, so that not only a secure support of the radial bearing via the radial support projections is ensured, but rather also intermediate flow channels with a relatively large flow cross section are ensured.

In a further advantageous embodiment of the coupling device according to the invention, the radial support projections are tapered in an axial direction in order to allow the lubricant or / and coolant to flow easily through them. It is preferred here if the radial support projections are tapered in the direction of the collecting section and / or at least at the end. In principle, the tapering can take place in any way. In this embodiment, it is preferred if the tapering is effected in part or entirely by reducing the extent of the radial support projections in the circumferential direction in order to avoid reducing the support surface of the radial support projections by reducing the extent of the radial support projections in the radial direction.

In order to ensure that the lubricant and / or coolant continues to flow from the To enable intermediate flow channels, the support sleeve is further supported in a further preferred embodiment of the coupling device according to the invention on a radial section of the second component with the production of at least one intermediate radial flow channel for the lubricant and / or coolant, which is connected to the at least one flow channel. The support of the support sleeve on the radial section of the second component also has the advantage that the support sleeve can simply be transferred to its end position during manufacture of the coupling device, on which it is supported on the radial section of the second component, so that the manufacture of the Coupling device is simplified.

To realize the support of the support sleeve on the radial section of the second component while creating the at least one radial flow channel, the support sleeve or the radial section in a further preferred embodiment of the coupling device according to the invention has at least two axial support projections, which are spaced apart in the circumferential direction and on the radial section or Support sleeve are supported with the formation of the intermediate radial flow channels. As with the radial support projections, the axial support projections can also be provided either on the support sleeve or the radial section, it also being possible here in principle if corresponding axial support projections are provided both on the support sleeve and on the radial section of the second component. In this embodiment, it is also preferred if the number of axial support projections corresponds to the number of radial support projections. Alternatively or in addition, it is preferred if the axial support projections are designed as extensions of the radial support projections in order to keep the manufacturing outlay low in the event that both the radial support projections and the axial support projections are provided either on the support sleeve or on the radial section.

In a further particularly preferred embodiment of the coupling device according to the invention, the radial bearing can be supported or supported in the axial direction on the axial support projections. For example, in the case of a radial bearing in the form of a roller bearing, one of the two bearing shells of the roller bearing could be supported or supported in the axial direction on the axial support projections in order to bring about a support of the roller bearing in the axial direction via the axial support projections on the radial section of the second component . For this purpose, the axial support projections can protrude beyond the support sleeve in the radial direction, for example. In order to achieve a particularly uniform support of the radial bearing in the axial direction on the axial support projections, it is further preferred in this embodiment if this is done with the interposition of a radial collar of the support sleeve that is closed in the circumferential direction.

In a further advantageous embodiment of the coupling device according to the invention, the support sleeve is formed in one piece. The collecting section, the retaining section, the radial support projections and the axial support projections, and optionally the circumferential radial collar, can be formed in one piece.

According to a further advantageous embodiment of the coupling device according to the invention, the support sleeve is pressed onto the second axial section in order to be able to bring about a secure and easy-to-manufacture, preferably non-rotatable, fastening of the support sleeve to the second axial section of the second component.

In a further advantageous embodiment of the coupling device according to the invention, the support sleeve on the one hand and the second axial section or the second component on the other hand are made from different materials, preferably from materials of different strength or / and hardness. It has been shown that this ensures a particularly simple assembly of the second component, radial bearing and support sleeve.

In principle, the radial bearing could be formed by any bearing which, on the one hand, enables the two components to be securely supported against one another in the radial direction and, on the other hand, enables a largely unhindered relative rotation between the two components. For example, the radial bearing can be formed by a plain bearing. This has the advantage that the support sleeve could equally well form the sliding surface for the radial bearing in the form of the sliding bearing. Alternatively, however, the slide bearing could also have a separate ring for forming the sliding surface, which would then be arranged or to be arranged on the support sleeve. This embodiment variant is also advantageous, especially since the race for the formation of the slide surface of a slide bearing requires, in particular, good slide properties of the slide surface, which can possibly be better achieved by separating the race and the support sleeve. In a particularly advantageous embodiment of the coupling device according to the invention, however, the radial bearing is designed as a roller bearing. Here, too, a bearing shell of the radial bearing could be formed by the support sleeve itself. Alternatively, a bearing shell can be formed separately from the support sleeve and fastened to the support sleeve, which - as already with the slide bearing mentioned above - can be advantageous, especially since this takes into account the different functions, namely on the one hand the support and guidance of the rolling elements through the bearing shell and on the other hand the secure support of the bearing on the second axial section and possibly also the radial section of the second component. In this respect, it is also simpler from a manufacturing point of view to manufacture the bearing shell of the rolling bearing and support sleeve separately from one another and only then connect them to one another, it also being preferred here if different materials, possibly materials of different strength and / or hardness, for the bearing shell on the one hand and the support sleeve on the other hand are used.

In a further preferred embodiment of the clutch device according to the invention, the clutch device is a wet-running multi-plate clutch with a disk set, to which the lubricant and / or coolant must therefore also be supplied.

In a further preferred embodiment of the clutch device according to the invention, the lubricant and / or coolant guided via the at least one intermediate flow channel to the second axial side of the radial bearing can be supplied or supplied to the disk pack so that, despite the supply of the lubricant or / and coolant, on the first axial side of the radial bearing to ensure safe and adequate lubrication and / or cooling of the disk set of the disk clutch.

According to a further particularly preferred embodiment of the clutch device according to the invention, the aforementioned clutch device is designed in the form of a multi-plate clutch as a concentric double multi-plate clutch with a further disk set. In this case, it is preferred if the further disk pack is nested radially with the first-mentioned disk pack in such a way that the lubricant or / and coolant supplied to the disk pack via the at least one flow channel can then be fed or fed to the further disk pack. Thus, 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 ensures reliable lubrication and / or cooling of both disk packs.

According to a further advantageous embodiment of the clutch device according to the invention, the first component is a first disc carrier of the multi-disc clutch or the hub of such a first disc carrier, while the second component is a second disc carrier of the multi-disc clutch or the hub of such a second disc carrier. The first disk carrier is preferably an outer disk carrier. The second disk carrier is preferably an inner disk carrier. It is also preferred in this embodiment if the first plate carrier is designed as part of the input side, while the second plate carrier is designed as part of the output side of the multi-plate clutch.

• 1 eine Seitenansicht einer Kupplungseinrichtung innerhalb eines Antriebsstrangs eines Kraftfahrzeugs in geschnittener Darstellung,
• 2 eine Seitenansicht der Stützhülse aus 1 in vergrößerter und geschnittener Darstellung,
• 3 eine Vorderansicht der Stützhülse aus 2 in Richtung des Pfeils A und
• 4 eine perspektivische Darstellung der Stützhülse aus den 1 bis 3.

The invention is explained below using an exemplary embodiment with reference to the accompanying drawings. Show it:

• 1 2 shows a side view of a coupling device within a drive train of a motor vehicle in a sectional illustration,
• 2nd a side view of the support sleeve 1 in an enlarged and cut representation,
• 3rd a front view of the support sleeve 2nd in the direction of the arrow A and
• 4th a perspective view of the support sleeve from the 1 to 3rd .

1 shows a powertrain 2nd with a coupling device 4th . In the figures, the opposite axial directions are 6 , 8th , the opposite radial directions 10th , 12th and the opposite circumferential directions 14 , 16 indicated by corresponding arrows, the coupling device 4th to one in the axial directions 6 , 8th extending axis of rotation 18th is rotatable.

The coupling device 4th is designed as a wet-running, concentric double plate clutch. So the coupling device 4th an entry page 20th on that via a switchable disconnect clutch 22 with the exit side 24th a drive unit, not shown, for example an internal combustion engine, is indirectly or directly in rotary driving connection. The named entry page 20th has a first outer disk carrier 26 and a second outer disk carrier 28 on, with the two outer disk carriers 26 , 28 one in the radial direction 12th internal common hub 30th exhibit.

Furthermore, the coupling device 4th a first exit page 32 and a second exit page 34 on. The first exit page 32 is essentially from a first inner disk carrier 36 and one rotatably with the first inner disk carrier 36 connected first output hub 38 educated. The second exit page 34 is, however, essentially from a second inner disk carrier 40 and one in the radial direction 12th internally arranged second output hub 42 educated. Between the first outer disk carrier 26 and the first inner disk carrier 36 is a first plate pack 44 arranged that via a hydraulic actuator 46 can be actuated so that this is the optional rotary coupling between the input side 20th and the first exit page 32 serves. In addition, is between the second outer disk carrier 28 and the second inner disk carrier 40 a second plate pack 48 arranged, also by the hydraulic actuator 46 can be actuated so that the second plate pack 48 the optional creation of a rotary driving connection between the input side 20th and the second exit page 34 serves. As previously indicated, the coupling device 4th formed as a concentric double plate clutch, the first and second plate pack 44 , 48 at least partially in the radial direction 10th , 12th are arranged nested.

The entry page 20th together with the outer disk carriers 26 , 28 and the hub 30th as well as the first exit page 32 are on the one hand about the axis of rotation 18th rotatable and the other relative to each other about the axis of rotation 18th rotatable. So the hub points 30th a first axial section 50 on while the first output hub 38 a second axial section 52 has, the two axial sections 50 , 52 via a radial bearing 54 in the radial direction 10th , 12th are rotatably supported on each other. The radial bearing 54 is designed as a roller bearing, the one of the first axial section 50 assigned first bearing shell 56 and one of the second axial section 52 assigned second bearing shell 58 has, between which several rolling elements 60 are arranged. Here is the second bearing shell 58 of the radial bearing 54 however not or not exclusively directly at the first output hub 38 or their second axial section 52 supported, but rather via a support sleeve 62 which will be discussed in more detail later with reference to the 1 in connection with the 2nd to 4th to be received.

In any case, the radial bearing 54 one in the axial direction 6 located first axial side 64 , that is, an area in the axial direction 8th next to the radial bearing 54 , and one of the first axial sides 64 opposite second axial side 66 an area in the axial direction 6 next to the radial bearing 54 . There is a lubricant and / or coolant 68 on the first axial side 64 of the radial bearing 54 in the radial direction 10th Can be fed from the inside to the outside. To achieve the appropriate feed, one is in the radial direction 10th outward-facing feed opening 70 for the lubricant and / or coolant 68 intended. Here is the feed opening 70 in the axial direction 6 , 8th between the first output hub 38 or the second axial section 52 on the one hand and another component 72 the coupling device 4th on the other hand, formed as a fixed component 72 and therefore as one not about the axis of rotation 18th rotatable component 72 is trained. In the illustrated embodiment, the further component 72 from a housing of the hydraulic actuating device 46 formed, which can for example be attached to a transmission housing, not shown, or another fixed housing. There is therefore a feed opening 70 created in the circumferential direction 14 , 16 closed circumferentially between the second axial section 52 and the component 72 the hydraulic actuator 46 is formed to flow the lubricant and / or coolant flow 68 in the radial direction 10th to allow outside.

The second axial side 66 of the radial bearing 54 starting from the first axial side 64 with the lubricant and / or coolant 68 supplied while on any openings in the second axial section 52 or the first output hub 38 is dispensed with, via the second axial side 66 if necessary, directly with lubricant and / or coolant 68 could be supplied.

In order to supply the second axial side 66 with lubricant and / or coolant 68 not for any openings in the first output hub 38 or a reduced flow through the radial bearing 54 in the axial direction 6 between the two cups 56 , 58 to be instructed is the support sleeve already mentioned 62 producing at least one axial flow channel 74 to connect the first axial side 64 with the opposite second axial side 66 of the radial bearing 54 on the second axial section 52 the first output hub 38 appropriate. Here is the support sleeve 62 in the axial direction 6 on the second axial section 52 the first output hub 38 pressed onto a non-rotatable connection between the support sleeve 62 and the first output hub 38 to achieve. It has proven to be advantageous if the support sleeve 62 on the one hand and the second axial section 52 or the first output hub 38 on the other hand, are made from different materials, preferably from materials of different strength and / or hardness. Below is the one-piece support sleeve 62 with reference to the 2nd to 4th described in more detail.

The support sleeve 62 extends in the axial directions 6 , 8th . So the support sleeve points 62 one in the axial direction 6 , 8th extended support section 76 on. On the in the radial direction 12th inward side of the support section 76 are several radial support projections 78 provided, the radial support projections 78 in the circumferential direction 14 , 16 are evenly spaced from each other. Hence the support sleeve 62 over the radial support projections 78 in the radial direction 12th to inside the second axial section 52 the first output hub 38 with formation of several axial flow channels 74 supportable or supported. From the 2nd and 4th it can be seen that the radial support projections 78 a larger expansion in the axial direction 6 , 8th than in the circumferential direction 14 , 16 exhibit. This is in 2nd based on the length a in the axial direction 6 , 8th and the width b in the circumferential direction 14 , 16 shown.

In the axial direction 8th joins the support section 76 a catchment section 80 the support sleeve 62 at. In principle, the radial support projections could 78 also about in the radial direction 12th inward side of the catch section 80 extend, but this is dispensed with in the illustrated embodiment, especially since the collecting section 80 collecting the lubricant and / or coolant described in more detail later 68 should serve, and thanks to the absence of radial support projections on the inside a larger volume can be achieved. In addition, the omission of radial support projections on the in the radial direction 12th inside of the collecting section 80 a particularly lightweight support sleeve 62 created. The catchment section 80 extends essentially in the axial direction 8th in order to end there at the collecting section 80 arranged retention section 82 to pass over. The retention section 82 serves to hold back the catch section described in more detail later 80 impinging lubricant and / or coolant 68 in the axial direction 8th , the circumferential 14 , 16 closed all-round retention section 82 for this purpose in the radial direction 12th inside over the catchment section 80 protrudes.

Although not shown in more detail, the collecting section could 80 or / and the retention section 82 while deflecting one in the radial direction 10th lubricant and / or coolant supplied to the outside 68 in the direction of the at least one axial flow channel 74 , hence in the axial direction 6 , slanted or conical.

In the axial direction 6 several axial support projections close 84 to the support section 76 the support sleeve 62 at the circumferential direction 14 , 16 are spaced apart and in the axial direction 6 over the support section 76 the support sleeve 62 protrude. The number of axial support protrusions 84 corresponds to the number of radial support projections 78 , the axial support projections 84 in the embodiment shown as an extension of the radial support projections 78 in the axial direction 6 are trained. Moreover, that is 2nd to 4th it can be seen that the axial support projections 84 in the radial direction 10th outwards over the radial direction 10th outward side of the support section 76 protrude.

1 shows the installed condition of the support sleeve 62 inside the coupling device 4th . As already explained above, the support sleeve is 62 in the axial direction 6 on the first output hub 38 pressed on, the radial support projections 78 creating the several intermediate axial flow channels 74 in the radial direction 12th on the second axial section 52 are supported. In addition, the support sleeve 62 so far in the axial direction 6 on the first output hub 38 slipped on that the axial support projections 84 on a radial section 86 the first output hub 38 or the first inner disk carrier 36 in the axial direction 6 are supported. The support sleeve is therefore supported here 62 by means of the axial support projections 84 on the radial section 86 creating multiple radial flow channels 88 for the lubricant and / or coolant 68 , the radial flow channels 88 with the axial flow channels 74 are connected to the flow.

Is also out 1 apparent that the radial bearing 54 complete with the radial support tabs 78 in the radial direction 10th , 12th is arranged in a nested manner in order to support the radial bearing in a particularly secure manner 54 over the support sleeve 62 on the second axial section 52 the first output hub 38 to achieve. Basically, the radial bearing 54 at least partially, preferably more than 50% of the axial length of the radial bearing 54 , with the radial support projections 78 be arranged radially nested, the complete radial nesting is preferred. Furthermore, the radial bearing 54 indirectly in the axial direction 6 over the support sleeve 62 on the radial section 86 supportable or supported. More specifically, it is on the support section 76 the support sleeve 62 arranged second bearing shell 58 in the axial direction 6 to those in the radial direction 10th outwards via the support section 76 protruding axial support projections 84 the support sleeve 62 supported, the latter in turn - as already explained - in the axial direction 6 on the radial section 86 are supported. In principle, this could also be a circumferential direction 14 , 16 closed circumferential and in the radial direction 10th radial collar protruding outwards on the support sleeve 62 be provided to indirectly support the second bearing shell 58 in the axial direction 6 on the radial section 86 to effect.

When the support sleeve is installed 62 to 1 stands the catchment section 80 in the axial direction 8th over the second axial section 52 and over the axial end 90 the first output hub 38 out so that's in the radial direction 10th lubricants and / or coolants supplied to the outside 68 from the inside onto the collecting section 80 meets. The one before mentioned feed opening 70 is at least partially, here completely, with the collecting section 80 in the radial direction 10th , 12th nested to get as much of the radial direction as possible 10th lubricant and / or coolant supplied to the outside 68 intercept or catch. The collecting section extends 80 further in the axial direction 8th about the position of the feed opening 70 addition, so that the previously mentioned component 72 the hydraulic actuator 46 at least partially with the catch section 80 in the radial direction 10th , 12th is nested. In other words, the component is 72 , which is substantially tubular, in the axial direction 6 in the catchment section 80 the support sleeve 62 immersed in the radial nesting and thus a particularly effective collection or interception of the lubricant and / or coolant 68 through the catch section 80 to reach.

Below is how the support sleeve works 62 with reference to the 1 to 4th explained again in more detail.

Of the gearbox, which is only indicated schematically 92 of the drive train 2nd the lubricant or / and coolant is supplied 68 in the axial direction 6 . It is advantageous here if the lubricant or / and coolant supply 68 between the component 72 the actuator 46 and one of the first exit pages 32 or the first output hub 38 assigned first transmission input shaft 94 he follows. So the lubricant and / or coolant 68 via the annulus between the first transmission input shaft 94 and the component 72 take place, which could in principle also be a support tube. In the area of the circumferential direction 14 , 16 circumferential feed opening 70 the lubricant and / or coolant supplied in this way flows 68 in the radial direction 10th outward. This affects the lubricant and / or coolant 68 on the catch section 80 the support sleeve 62 so that the lubricant and / or coolant 68 is pent up or intercepted at this point. The lubricant and / or coolant trapped in this way 68 can now go along the catch section 80 in the axial direction 8th and in the axial direction 6 stream. The flow in the axial direction 8th through the retention section previously described 82 the support sleeve 62 prevented at least to a certain extent, while in the axial direction 6 along the catchment section 80 flowing lubricants and / or coolants 68 into the axial flow channels 74 arrives to from the first axial side 64 to the opposite second axial side 66 of the radial bearing 54 to flow bypassing it.

To simplify the inflow of the lubricant and / or coolant 68 into the axial flow channels 74 the radial support projections must be ensured 78 - Although not shown in the figures - in the direction of the collecting section 80 or in the axial direction 8th tapered at least at the end. It is preferred if the mentioned tapering is partially or entirely reduced by reducing the extent of the radial support projections 78 in the circumferential direction 14 , 16 is effected, that is, by reducing the width b . Following the axial flow channels 74 gets the lubricant or / and coolant 68 into the radial flow channels 88 to in the radial direction 10th on the second axial side 66 again in the radial direction 10th to pour.

How from 1 this can be seen via the axial flow channels 74 and the radial flow channels 88 from the first axial side 64 to the second axial side 66 of the radial bearing 54 guided lubricants and / or coolants 68 the first plate pack 44 feedable or supplied, while that portion of the lubricant and / or coolant 68 which is in the axial direction 8th along the catchment section 80 flows and the retention section 82 overcomes, then in the radial direction 10th can flow outward to components of the actuator 46 to lubricate and / or to cool. In the embodiment shown, this relates in particular to the two bearings shown 96 , 98 for decoupling the power transmission elements 100 , 102 from the actuating pistons 104 , 106 the hydraulic actuator 46 .

Furthermore, this is from the first axial side 64 to the second axial side 66 guided lubricants and / or coolants 68 , the first plate pack 44 in the radial direction 10th can be fed or fed to the outside, then the second plate pack 48 feedable or fed, what through additional openings 108 in the first outer disk carrier 26 and the second inner disk carrier 40 can be supported, which - provided in the plate carrier section of the respective plate carrier - bring about the most direct possible lubricant and / or coolant supply to the respective plate pack.

Reference list

2nd

Powertrain

4th

Coupling device

6

axial direction

8th

axial direction

10th

radial direction

12th

radial direction

14

Circumferential direction

16

Circumferential direction

18th

Axis of rotation

20th

Home page

22

Separating clutch

24th

Exit side

26

first outer disk carrier

28

second outer disk carrier

30th

hub

32

first exit page

34

second exit page

36

first inner disk carrier

38

first output hub

40

second inner disk carrier

42

second output hub

44

first plate pack

46

hydraulic actuator

48

second plate pack

50

first axial section

52

second axial section

54

Radial bearing

56

first bearing shell

58

second bearing shell

60

Rolling elements

62

Support sleeve

64

first axial side

66

second axial side

68

Lubricants and / or coolants

70

Feed opening

72

another component

74

axial flow channel

76

Support section

78

radial support projections

80

Catchment section

82

Retention section

84

axial support projections

86

Radial section

88

radial flow channels

90

axial end

92

transmission

94

first transmission input shaft

96

camp

98

camp

100

Power transmission elements

102

Power transmission elements

104

Actuating piston

106

Actuating piston

108

openings

a

length

b

width

Claims (10)

Coupling device (4) with a first component and a second component, which can be rotated relative to one another about an axis of rotation (18), a first axial section (50) of the first component via a radial bearing (54) on a second axial section (52) of the second Supported component and a lubricant and / or coolant (68) on a first axial side (64) of the radial bearing (54) in the radial direction (10) can be fed to the outside, characterized in that the radial bearing (54) via a support sleeve (62 ) is supported on the second axial section (52), which creates at least one intermediate flow channel (74) for the lubricant and / or coolant (68) for connecting the first axial side (64) to the opposite second axial side (66) of the radial bearing (54) is attached to the second axial section (52). Coupling device (4) after Claim 1 , characterized in that the support sleeve (62) has a collecting section (80) which protrudes on the first axial side (64) in the axial direction (8) over the second axial section (52) in such a way that it follows in the radial direction (10) Lubricant or / and coolant (68) fed in from the outside meets the collecting section (80), a feed opening (70) pointing outward in the radial direction (10) preferably being provided for supplying the lubricant or / and coolant (68), which is arranged at least partially or completely radially nested with the collecting section (80) and / or is formed in the axial direction (6, 8) between the second axial section (52) or second component and a third component (72) of the coupling device (4), which is particularly preferably designed as a fixed component (72) and / or is arranged at least partially radially nested with the collecting section (80). Coupling device (4) after Claim 2 characterized in that the support sleeve (62) also has a retaining section (82) arranged on the collecting section (80) for retaining the lubricant or / and coolant (68) impinging on the collecting section (80) in the axial direction (8), which protrudes inward in the radial direction (12) beyond the collecting section (80) and preferably on the end side of the collecting section (80) is arranged, and / or the collecting section (80) or / and retaining section (82) is inclined or deflected by deflecting the lubricant or / and coolant (68) supplied to the outside in the radial direction (10) in the direction of the at least one flow channel (74) is conical. Coupling device (4) according to one of the preceding claims, 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 in the circumferential direction (14, 16) and on the second axial section (52) or the support sleeve (62) are supported to form the intermediate flow channels (74), the radial bearing (54) preferably partially, particularly preferably to more than 50% of the axial length of the radial bearing (54) or completely, with the radial support projections (78) is arranged radially nested. Coupling device (4) after Claim 4 , characterized in that the radial support projections (78) have a greater extent in the axial direction (6, 8) than in the circumferential direction (14, 16) and / or in an axial direction (8), preferably in the direction of the collecting section (80) or / and at least at the end, are tapered, the tapering being particularly preferably effected partially or entirely by reducing the extent of the radial support projections (78) in the circumferential direction (14, 16). Coupling device (4) according to one of the preceding claims, characterized in that the support sleeve (62) further on a radial section (86) of the second component with the production of at least one intermediate radial flow channel (88) for the lubricant and / or coolant (68) is supported, which is connected to the at least one flow channel (74). Coupling device (4) after Claim 6 , characterized in that the support sleeve (62) or the radial section (86) has at least two axial support projections (84) which are spaced apart in the circumferential direction (14, 16) and are formed on the radial section (86) or the support sleeve (62) the intermediate radial flow channels (88) are supported, the number of axial support projections (84) preferably corresponding to the number of radial support projections (78) and / or the axial support projections (84) preferably being designed as extensions of the radial support projections (78) and the radial bearing (54) can be supported or supported particularly preferably in the axial direction (6) on the axial support projections (84), optionally with the interposition of a radial collar of the support sleeve (62) which is closed in the circumferential direction (14, 16). Coupling device (4) according to one of the preceding claims, characterized in that the support sleeve (62) is formed in one 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 made of different materials, preferably made of materials of different strength or / and hardness, and / or the radial bearing (54) is designed as a roller bearing. Coupling device (4) according to one of the preceding claims, characterized in that the coupling device (4) is a wet-running multi-plate clutch with a multi-plate pack (44), the via the at least one intermediate flow channel (74) on the second axial side (66) of the radial bearing (54) guided lubricant and / or coolant (68) can preferably be fed or fed to the disk pack (44) and the disk clutch is particularly preferably a concentric double disk clutch with a further disk pack (48), which may be radial with the disk pack (44) It is nested that the lubricant or / and coolant (68) fed to the disk pack (44) via the at least one flow channel (74) can then be fed or fed to the further disk pack (48). Coupling device (4) according to one of the preceding claims, characterized in that the first component is a first plate carrier of the multi-plate clutch, preferably an outer plate carrier (26), or its hub (30), while the second component is a second plate carrier of the multi-plate clutch, preferably a Inner disk carrier (36), or its hub (38), wherein the first disk carrier is particularly preferably designed as part of the input side (20) and the second disk carrier as part of the output side (32) of the multi-plate clutch.

Images