DE102011005939A1 - coupling device - Google Patents

Abstract

The invention relates to a coupling device (1) for fluidically and mechanically connecting two components (2, 3) guiding a fluid flow (39), in particular in a motor vehicle, with an outer ring (4) formed on one component (2) is or can be attached to it, with an inner ring (5) which is formed on the other component (3) or can be attached to it and which can be axially inserted into the outer ring (4), and with a cover ring (7) which is on the outside Outer ring (4) is rotatably arranged in the circumferential direction. Simplified handling is achieved with at least one locking lever (8) which is arranged on the outer ring (4) so as to be pivotable about a pivot axis (9) extending perpendicular to the axial direction and perpendicular to the radial direction, the inner ring (5) having a locking contour (10) with which the respective locking lever (8) latches in the inserted state and axially fixes the inner ring (5) on the outer ring (4), the respective locking lever (8) being turned from a locking position by rotating the cover ring (7) from a locking position to an unlocking position can be moved into a release position in which the respective latching lever (8) axially releases the latching contour (10), so that the inner ring (5) can be axially pulled out of the outer ring (4).

Description

The present invention relates to a coupling device for the fluidic and mechanical connection of two fluid-carrying components, in particular in a motor vehicle.

A fluid flow leading components of motor vehicles, such. B. within a fresh air system or a cooling circuit or a lubricating oil circuit must be fluidly connected to each other. This coupling devices of the aforementioned type are used. The components which can be connected to one another with the aid of such a coupling device can be hoses, channels, pipes, housings and the like. For mass production, coupling devices are desired that are comparatively easy to handle. In vehicle coupling devices are also desirable that can be solved in case of need again, for example, to perform maintenance or repair work can.

The present invention is concerned with the problem of providing for a coupling device of the type mentioned an improved embodiment, which is characterized in particular by a compact structure and ease of use.

This problem is solved according to the invention by the subject matter of the independent claim. Advantageous embodiments are the subject of the dependent claims.

The present invention is based on a coupling device comprising an outer ring body, which is also referred to below as an outer ring, an inner ring body, which is also referred to below as an inner ring, and a cover ring. The coupling device is used for the fluidic and mechanical connection of two components that conduct a fluid flow. The outer ring is formed on or attached to the one or the first component. The inner ring is formed on the other or second component or attachable thereto. Furthermore, the inner ring in the outer ring can be inserted axially. The cover ring is arranged radially on the outside of the outer ring and rotatable in the circumferential direction. The rings are arranged coaxially with each other. The terms "axial", "radial" and "circumferential direction" refer to a common longitudinal central axis of the rings or the coupling device.

The invention is based on the general idea to provide at least one locking lever in such a coupling device, which is pivotally mounted on the outer ring and can engage with a formed on the inner ring locking contour, which can be canceled by turning the cover this latch to the inner ring again to be able to pull out the outer ring. Such locking provides for an intensive, positive connection or fixation of the inserted into the outer ring inner ring. This solid connection can be solved by a simple rotation of the cover again, whereby the disassembly is easily feasible.

Specifically, in the coupling device according to the invention, it is provided that the detent lever is pivotably mounted on the outer ring about a pivot axis extending perpendicular to the axial direction and perpendicular to the radial direction. The cover ring now cooperates with the respective latching lever that can be moved from a locking position to a release position by rotating the cover ring from a locking position into an unlocking position of the respective locking lever, in which the respective locking lever axially releases the locking contour of the inner ring, so that the inner ring is axially pulled out of the outer ring.

The cancellation of the locking of the respective locking lever by turning the cover is particularly advantageous if several locking lever are provided, which can be actuated simultaneously with the help of the cover for releasing the locking. Furthermore, the accessibility of the cover ring is sufficient to release the connection; the individual locking lever must not be accessible to the respective mechanic.

Particularly advantageous is an embodiment in which the respective locking lever is integrally formed on the outer ring. This eliminates a mounting of the respective locking lever on the outer ring, whereby the coupling device is inexpensive to implement. Such integral construction can, for example, be realized in that the locking lever is connected via coaxial to its pivot axis extending shaft portions with adjacent regions of the outer ring, while the locking lever is spaced outside of these shaft sections from the rest of the outer ring, so that the pivoting of the locking lever by an elastic Tordierbarkeit the shaft sections is realized.

In an advantageous embodiment, the respective latching lever can have a latching section having a latching lug and an actuating section which lies opposite the latching section with respect to the pivoting axis. The arrangement of the locking portion and the actuating portion on opposite sides with respect. The pivot axis generates oppositely oriented movements in the locking portion and in the operating portion during pivoting of the locking lever. An actuation of the Locking lever, in which the operating portion, for example, is moved radially inwardly, thus causing the locking portion is moved radially outward. As a result, working in a confined space kinematics is realized.

Particularly advantageous is now an embodiment in which the cover ring has on its inner side an actuating contour which rests radially on the actuating portion during rotation of the cover ring in the unlocked position and drives it radially inwardly. Again, a particularly compact design is supported, which requires little space radially.

According to a particularly advantageous embodiment, this actuating contour for the respective locking lever may have an actuating ramp which rises radially inwardly in the unlocking direction of rotation. With the aid of such an actuating ramp, in connection with the rotational movement of the cover ring, a comparatively large actuating force can be introduced radially onto the actuating section, as a result of which a reliable release of the locking can be achieved.

In a specific embodiment, the respective actuation ramp may end in the unlocking direction of rotation with a steep flank, which cooperates in the locking direction of rotation when reaching the locking position with an adjacent detent lever in the circumferential direction as an end stop. As a result, the respective actuating ramp receives an additional function, whereby the degree of integration of the coupling device is increased.

According to another advantageous embodiment can be blocked in the detent position by turning the cover from the unlocked position into the locking position of the respective locking lever. In other words, the cover ring is designed so that it blocks the displaced in the locking position locking lever in its locking position. The risk that the locking automatically releases, for example, by vibrations or shocks in the operation of a vehicle, is reduced.

According to a specific development of the cover ring may have on its inside a locking contour, which rests radially on the respective latching portion during rotation of the cover into the locking position and prevents pivoting of the respective locking lever in the release position. The cover thus blocked with the help of the locking contour by positive locking the respective locking lever, whereby an effective backup of the latch can be achieved.

It is expedient an embodiment in which the locking contour for the respective locking lever has a locking ramp which rises radially inwardly in the locking direction of rotation. Such a ramp contour can generate or support comparatively large radial forces in connection with the rotational adjustment of the cover ring, which makes the securing effective.

In a specific embodiment, the aforesaid respective locking ramp can now end in the locking direction of rotation with a steep flank, which interacts in the unlocking direction of rotation when reaching the unlocking position with an adjacent detent lever in the circumferential direction as an end stop. As a result, the respective locking ramp receives an additional function, which increases the integration density of the coupling device.

Suitably, the locking contour formed on the inner ring may be formed by an annular circumferential collar. Thus, a rotational angle alignment between the inner ring and outer ring is not required to insert the inner ring in the outer ring and to lock it. This will facilitate handling, especially in difficult to see space situations. The respective collar can be supported, for example, by means of ribs on an outer side of the inner ring. This gives the collar increased stability.

According to another advantageous embodiment, the outer ring may have radially inwardly an annular groove which receives a sealing ring, which rests in the inserted state radially on an outer side of the inner ring. With the aid of such a sealing ring, a fluid-tight connection between the two components can be realized.

Particularly advantageous is the present coupling device, when a plurality of locking levers distributed in the circumferential direction are arranged on the outer ring. The axial securing forces can thus be distributed symmetrically in the circumferential direction. It is particularly advantageous that with the help of a cover ring all locking lever can be operated simultaneously to release the latch. In particular, with the help of a cover ring at the same time blocking all locking lever can be achieved in the detent position.

The locking lever may be arranged on a support ring, which is connected via a plurality of distributed in the circumferential direction arranged radial webs with the outer ring. In particular, each may be provided between two adjacent locking levers a radial web. The support ring now defines the aforementioned shaft portions, with which the respective detent lever is integrally formed on the outer ring or on the support ring.

Said support ring can also be connected via a plurality of distributed in the circumferential direction arranged axial webs with a stiffening ring, which projects axially beyond the locking lever. With the help of the stiffening ring of the cover ring is kept at a distance to avoid unwanted contact of the cover with the respective locking lever. For this purpose, the stiffening ring can come to bear radially on the outside of an inner side of the cover ring. At the same time the cover ring can be supported axially on the stiffening ring and rotatably supported. For example. the stiffening ring cooperates with the locking contour in the manner of an axial sliding bearing, for which purpose the locking contour can be designed annular.

According to another advantageous embodiment, the inner ring may have radially outside a ring-shaped circumferential support collar, which is aligned in the inserted state radially to the aforementioned stiffening ring. In this way, the stiffening ring is supported in the inserted state radially inwardly by the support collar of the inner ring, so that comparatively large radial forces that can attack the outside of the cover, do not lead to an actuation of the respective detent lever.

Conveniently, the cover ring and inner ring are matched to one another such that in the inserted state, an annular gap is formed radially between the cover ring and the above-mentioned support collar, which is substantially filled by the aforementioned stiffening ring of the outer ring. As a result, stabilize the individual rings in the inserted state each other. With such a configuration results in the mated condition an axially flush alignment of cover, stiffening ring and support collar.

On the outer ring, a Reibschweißkontur may be formed on a side facing away from the inner ring side in order to secure the outer ring on the associated first component can. Additionally or alternatively, a Reibschweißkontur be formed on the inner ring on a side facing away from the outer ring, via which the inner ring on the associated second component can be fastened.

Likewise, it is basically possible to form the outer ring and / or the inner ring integrally on the respective component.

The cover ring has, in particular at an axial end, a radially inwardly projecting Abdeckkragen which extends to the outer ring, it can be supported radially, the Abdeckkragen allows a pivotal mounting of the cover ring on the outer ring.

According to a particularly advantageous embodiment, the cover ring can be designed so that it completely axially covers the respective detent lever and axially delimits an annular space which extends in the inserted state radially between the cover ring on the one hand and the inner ring and the outer ring on the other. The axial boundary of said annular space can be realized at the one axial end, for example, with the cover collar mentioned above. At the other axial end said annulus may be bounded by the aforesaid support collar in conjunction with the aforementioned stiffening ring. This results in an encapsulation of the respective locking lever in said annular space.

Inner ring and outer ring can be coordinated according to a preferred embodiment to each other so that in the inserted state, an inner cross section of the inner ring flush merges into an inner cross section of the outer ring. In other words, inner ring and outer ring have the same internal cross-sections on their flow-leading insides.

According to another advantageous embodiment may also be formed between the outer ring and the cover a (further) latching, which signals the user during rotation of the cover reaching the locking position and / or the unlocked position haptically. This latching preferably forms only an increased rotational resistance, which can be overcome by a correspondingly increased torque.

Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.

Show, in each case schematically,

1 and 2 each an isometric, exploded view of the coupling device, at different viewing directions,

3 a longitudinal section of the coupling device,

4 a detailed view of the coupling device in longitudinal section in the region of a locking lever in its detent position,

5 a detail view like in 4 , but with the locking lever in its release position,

6 an isometric view of an outer ring of the coupling device,

7 an isometric view of a cover ring of the coupling device,

8th a partially sectioned isometric detailed view of the coupling device in the region of a locking between the cover ring and outer ring.

According to the 1 to 5 comprises a coupling device 1 , with the help of which a first component 2 and a second component 3 can be fluidly and mechanically connected to each other, an outer ring body 4 or outer ring 4 the first component 2 is formed or is designed so that it on the first component 2 attachable. Furthermore, the coupling device comprises 1 an inner ring body 5 or inner ring 5 , the second component 3 is formed or designed to be on the second component 3 attachable. outer ring 4 and inner ring 5 are coordinated so that the inner ring 5 with respect to a longitudinal central axis 6 the coupling device 1 axially in the outer ring 4 is pluggable. The 3 to 5 show the inserted state.

The first component 2 is here only in the area of the outer ring 4 shown. The second component 3 is here only in the area of the inner ring 5 shown. Both components 2 . 3 serve to guide a fluid flow 39 , which is indicated in the figures by an arrow, wherein the flow direction implied by the arrow may also be reversed.

Furthermore, the coupling device comprises 1 a cover ring 7 , with respect to the longitudinal center axis 6 radially outside on the outer ring 4 is rotatably arranged in the circumferential direction. In other words, the cover ring 7 is relative to the outer ring 4 around the longitudinal central axis 6 rotatably arranged. Thus, the coupling device comprises 1 a total of three essential components, namely the three rings 4 . 5 . 7 ,

Furthermore, the coupling device 1 on the outer ring 4 with at least one locking lever 8th fitted. In the example are several locking lever 8th provided, distributed in the circumferential direction on the outer ring 4 are arranged.

The respective locking lever 8th is one in the 4 and 5 designated pivot axis 9 swiveling on the outer ring 4 arranged. The pivot axis 9 the respective locking lever 8th extends perpendicular to the axial direction and perpendicular to the radial direction. Thus, the respective pivot axis extends 9 tangentially through the respective locking lever 8th , Because the locking lever 8th distributed in the circumferential direction on the outer ring 4 are arranged, each locking lever has 8th a separate pivot axis 9 , where the pivot axes 9 lie in a common axial plane.

The inner ring 5 has a catch contour 10 on, with which the locking lever 8th latch when the inner ring 5 sufficiently in the outer ring 4 is inserted axially. In the locked state, the locking levers produce 8th an axial securing of the in the outer ring 4 inserted inner ring 5 on the outer ring 4 ,

The cover ring 7 is now designed so that it at least between a locking position, which in the 3 and 4 is reproduced, and an unlocking position, the in 5 is reproduced, is rotatable. The locking lever 8th are in turn each between one in the 3 and 4 shown detent position and a in 5 shown release position about its pivot axis 9 pivotable. The cover ring 7 is now so on the locking lever 8th tuned that by twisting the cover ring 7 from the locking position into the unlocking position of the respective locking lever 8th is moved or pivoted from the detent position to the release position. While the respective locking lever 8th in the locked position according to the 3 and 4 the catch contour 10 engages behind axially and thus locked, gives the respective locking lever 8th in the release position according to 5 the catch contour 10 axially free, such that the inner ring 5 from the outer ring 4 can be pulled out axially.

In the presented advantageous embodiment, the locking lever 8th integral on the outer ring 4 formed. For example. owns the outer ring 4 this a support ring 11 extending radially outward on the outer ring 4 extends in the circumferential direction. The locking lever 8th can now be integral to this support ring 11 be formed. Immediately to the respective locking lever 8th adjacent sections 12 of the carrying ring 11 form shaft sections for the respective locking lever 8th , which also below with 12 be designated. This integral on the locking lever 8th and on the support ring 11 trained shaft sections 12 allow elastic torsion with respect to the respective pivot axis 9 and thereby give the integrated locking lever 8th the desired pivoting mobility. Outside the shaft sections 12 is the respective locking lever 8th to the remaining outer ring 4 arranged contactless or spaced, whereby he has enough space for its pivoting mobility.

According to the 4 and 5 owns the respective locking lever 8th a resting section 13 and an operation section 14 , actuating section 14 and resting section 13 are on the locking lever 8th with respect to the pivot axis 9 arranged on opposite sides. The resting section 13 has a catch 15 on, in the rest position according to 3 and 4 with the catch contour 10 interacts.

The cover ring 7 has on its inside an actuating contour 16 which is positioned and dimensioned so as to rotate the cover ring 7 in the unlocked position radially outward on the actuating portion 14 abuts and this drives radially inward. As a result, the latching section pivots 13 radially outward until it is in the unlocked position of the cover ring 7 the release order according to 5 reached. The actuating contour 16 points here for each locking lever 8th own confirmation ramp 17 oriented in the circumferential direction so as to be in the unlocking rotational direction of the cover ring 7 rises radially inward. This displaces the actuation ramp 17 when turning the cover ring 7 in the unlocked position the operating section 14 the respective locking lever 8th radially inward.

The actuation ramps 17 each have a steep flank here 18 , with which the respective actuation ramp 17 ends in the unlocking direction. These steep slopes 18 are positioned so that they in the locking direction when reaching the locking position of the cover 7 with the respective, adjacent in the circumferential direction locking lever 8th interact as an end stop. The respective steep flank 18 is essentially radially oriented in the example.

The cover ring 7 is expediently also designed so that a twisting of the cover 7 from the unlocked position into the locking position the respective locking lever 8th blocked in the locked position. In the locked state is the respective locking lever 8th no longer about its pivot axis 9 pivotable. In this way, the latched state is secured.

To realize this functionality, the cover ring 7 on its inside a bolt contour 19 , which is designed so that they rotate when turning the cover 7 in the locking position radially outward on the respective latching portion 13 abuts and pivoting of the respective locking lever 8th prevented in the release position. The bolt contour 19 thus blocked by positive locking the respective locking lever 8th , Here is the respective locking lever 8th according to 4 with his rest section 13 radially between the locking contour 10 and the bolt contour 19 fixed, in particular braced.

The bolt contour 19 can for the respective locking lever 8th a bar ramp 20 have, which increases in the locking direction of rotation radially inwardly. Recognizable are thus the bolt ramps 20 and the actuation ramps 17 oriented in opposite directions. In particular, they can be coordinated with one another such that the respective latching lever 8th at every rotational position of the cover ring 7 simultaneously with the actuating contour 16 and with the bar contour 19 in contact.

However, it is expedient to use an embodiment in which the bolt ramps 20 fall faster when unlocking radially outward than the operating ramps 17 rise radially inwards. Accordingly, the bolt ramps 20 steeper designed than the operating ramps 17 ,

Preferably, the respective latching ramp 20 in the locking direction with a steep flank 21 end up. This steep flank 21 extends, for example, substantially radially. The steep slopes 21 are so on the locking lever 8th tuned to that when twisting the cover ring 7 in the unlocking direction when reaching the unlocked position with the respective adjacent in the circumferential direction locking lever 8th interact as an end stop. Thus also get the bolt ramps 20 an additional function.

The locking contour 10 of the inner ring 5 is in the embodiment shown here by an annular circumferential collar 22 formed on the outside of the inner ring 5 protrudes radially in the example. Besides, the collar is 20 here by means of several ribs 23 on the outside of the inner ring 5 supported.

The outer ring 4 owns one of the inner ring 5 facing inside, so radially inside an annular groove 24 into which a sealing ring 25 is used. When inserted, this sealing ring comes 25 radially on the outside of the inner ring 5 to the plant.

As already mentioned, the locking lever 8th on the support ring 11 arranged. This is according to the 1 . 2 and 6 via a plurality of radial webs distributed in the circumferential direction 26 with the remaining outer ring 4 connected. Here, in the example, depending on a radial web 26 between two circumferentially adjacent locking levers 8th positioned. The respective radial web 26 can also by means of an axial strut 27 outside on the outer ring 4 be supported. Furthermore, the outer ring 4 here with a stiffening ring 28 equipped, which is also coaxial with the longitudinal center axis 6 extends and the over axial webs 29 with the support ring 11 connected is. The stiffening ring 28 stands axially over the locking lever 8th over and extends according to the 3 to 5 into an annular gap 30 which is radially between an axial end portion 31 the cover ring 7 and a support collar 32 is trained. This support collar 32 is radially outward on the inner ring 5 trained and runs around a ring. In the embodiment shown here, the axial end portion is aligned 31 the cover ring 7 , the stiffening ring 28 and the support collar 32 radially, as soon as the inner ring 5 in the outer ring 4 is plugged in. This allows the cover ring 7 be supported against a radial change in shape. At the same time ends in the embodiment shown here, the cover ring 7 , the support collar 32 and the stiffening ring 28 flush in the axial direction.

In the example shown has the outer ring 4 at one of the inner ring 5 facing away from the axial end face a Reibschweißkontur 33 , with the help of which the outer ring 4 comparatively easy on the respective first component 2 or can be attached to another component. Basically, also the inner ring 5 have such Reibschweißkontur.

Appropriately possess the outer ring 4 and the inner ring 5 same internal cross sections 34 respectively. 35 , creating a flush transition from the inner ring 5 to the outer ring 4 is achievable.

The cover ring 7 is here as well at his from the annular gap 30 remote axial end region 36 with a radially inwardly projecting Abdeckkragen 37 equipped, extending radially to the outer ring 4 extends. This results in a total of encapsulation for an annulus 38 which is coaxial with the longitudinal center axis 6 extends and in which the movable locking lever 8th are arranged. Thus, the risk of contamination in the area of the movable elements can be reduced.

According to the 6 to 8th can also have a (further) lock 40 be provided between the cover ring 7 and the outer ring 4 acts. When turning the cover ring 7 this locked on said catching 40 with the outer ring 4 when it reaches its locking position or when it reaches its unlocked position. Likewise, the locking can 40 designed as double locking, so the cover ring 7 on the one hand when reaching its locking position with the outer ring 4 latched and on the other hand when reaching its unlocked position with the outer ring 4 locked. This locking 4 is haptically recognizable for the respective mechanic, as it expediently characterized by an increased rotational resistance, which must be overcome upon reaching the unlocked position or the locking position and when leaving the unlocked position or the locking position. To realize this locking 40 can on the cover ring 7 , in particular on the cover collar 37 radially inward notches 41 be provided with radial projections 42 cooperate radially outward from an outer side of the outer ring 4 protrude. The cover ring 7 can also with at least one mark 43 z. B. in the form of a marker arrow, equipped with one on the outer ring 4 trained countermark 44 , For example, in the form of a survey, cooperates to signal the respective fitter also optically reaching the unlocked position or reaching the locking position.

Claims (15)

Coupling device for the fluidic and mechanical connection of two fluid flows ( 39 ) leading components ( 2 . 3 ), in particular in a motor vehicle, - with an outer ring ( 4 ) attached to the one component ( 2 ) is formed or attachable thereto, - with an inner ring ( 5 ) attached to the other component ( 3 ) is formed or attachable thereto and in the outer ring ( 4 ) is axially insertable, - with a cover ring ( 7 ), the outside of the outer ring ( 4 ) is rotatably arranged in the circumferential direction, - with at least one locking lever ( 8th ), which is about a perpendicular to the axial direction and perpendicular to the radial direction pivot axis ( 9 ) pivotable on the outer ring ( 4 ), the inner ring ( 5 ) a catch contour ( 10 ), with which the respective locking lever ( 8th ) locked in the inserted state and the inner ring ( 5 ) axially on the outer ring ( 4 ), wherein - by turning the cover ring ( 7 ) of a locking position in an unlocked position of the respective locking lever ( 8th ) is movable from a detent position into a release position, in which the respective detent lever ( 8th ) the catch contour ( 10 ) axially, so that the inner ring ( 5 ) from the outer ring ( 4 ) is axially pulled out. Coupling device according to claim 1, characterized in that the respective detent lever ( 8th ) integral to the outer ring ( 4 ) is formed. Coupling device according to claim 1 or 2, characterized in that the respective locking lever ( 8th ) a latch ( 15 ) having Rast section ( 13 ) and one with respect to the pivot axis ( 9 ) opposite operating section ( 14 ) having. Coupling device according to claim 3, characterized in that the cover ring ( 7 ) on its inside an actuating contour ( 16 ), which during rotation of the cover ( 7 ) in the unlocked position radially outward on the actuating portion ( 14 ) and this drives radially inward. Coupling device according to claim 4, characterized in that the actuating contour ( 16 ) for the respective locking lever ( 8th ) an actuation ramp ( 17 ), which rises radially inwardly in the unlocking direction of rotation. Coupling device according to one of claims 1 to 5, characterized in that by turning the cover ( 7 ) of the unlocked position in the locking position of the respective locking lever ( 8th ) is locked in the locked position. Coupling device according to claims 3 and 6, characterized in that the cover ring ( 7 ) on its inside a bolt contour ( 19 ), which during rotation of the cover ( 7 ) in the locking position radially outward on the respective latching portion ( 13 ) and a pivoting of the respective locking lever ( 8th ) prevented in the release position. Coupling device according to claim 7, characterized in that the locking contour ( 19 ) for the respective locking lever ( 8th ) a latch ramp ( 20 ) which rises radially inwardly in the locking direction of rotation. Coupling device according to claim 5 or 8, characterized in that - the respective latching ramp ( 17 ) in the locking direction of rotation with a steep flank ( 18 ) ends, in the unlocking direction when reaching the unlocking position with an adjacent in the circumferential direction locking lever ( 8th ) cooperates as an end stop, and / or - that the respective actuation ramp ( 20 ) in the unlocking direction of rotation with a steep flank ( 21 ) ends, which in the locking direction of rotation when reaching the locking position with an adjacent in the circumferential direction locking lever ( 8th ) cooperates as an end stop. Coupling device according to one of claims 1 to 9, characterized in that the latching contour ( 10 ) by an annular circumferential collar ( 22 ) is formed, in particular by means of ribs ( 23 ) on an outer side of the inner ring ( 5 ) can be supported. Coupling device according to one of claims 1 to 10, characterized in that the outer ring ( 4 ) radially inwardly an annular groove ( 24 ), which has a sealing ring ( 25 ), which in the inserted state radially on an outer side of the inner ring ( 5 ) is present. Coupling device according to one of claims 1 to 11, characterized in that a plurality of locking levers ( 8th ) distributed in the circumferential direction on the outer ring ( 4 ) are arranged. Coupling device according to claim 12, characterized in that the locking lever ( 8th ) on a support ring ( 11 ) arranged over a plurality of circumferentially distributed radially webs ( 26 ) with the outer ring ( 4 ) connected is. Coupling device according to claim 13, characterized in that the support ring ( 11 ) via a plurality of circumferentially distributed axial webs ( 29 ) with a stiffening ring ( 28 ) is connected axially via the locking lever ( 8th ) protrudes. Coupling device according to claim 14, characterized in that the inner ring ( 5 ) radially outside a ring-shaped circumferential support collar ( 32 ), which in the inserted state radially to the stiffening ring ( 28 ) flees.

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