Discharge fitting with removable discharge tube

Abstract

The utility model relates to a discharge fitting, preferably a sanitary discharge fitting, comprising a base body, a discharge pipe and a detachable pipe connection. The base body has a pipe joint and a coupling shaft protruding upward from the pipe joint shaft. The discharge pipe is detachably arranged on the base body, and the end face of the discharge pipe is opposite to the end face of the pipe joint. A releasable tube connection securely holds the discharge tube on the coupling shaft. An axial gap is formed between an end face of the discharge pipe and an opposite end face of the pipe joint. The pipe connection is an unlockable latching connection having a latching element held on the coupling shaft. The latching element has an unlocking nose. The nose is exposed in an axial gap between an end face of the discharge tube and an opposite end face of the tube joint so as to be accessible for manipulation.

Description

TECHNICAL FIELD

[0001] The invention relates to a discharge fitting having a base body and a discharge tube which is detachably mounted at the base body in a coupling end region. The base body has a tube connection and a coupling shaft which projects axially from the tube connection with a smaller diameter, wherein the discharge tube is plugged onto the coupling shaft with its coupling end region. Here, the end of the discharge tube is opposite the end of the tube connection. Furthermore, the discharge fitting comprises a releasable tube connection which holds the discharge tube at its coupling end region fixed against axial removal at the coupling shaft. Depending on requirements and application, the tube connection is embodied such that the discharge tube is held at the coupling shaft and thus at the base body either with limited or unlimited pivotable movement or not pivotably. BACKGROUND

[0002] Such discharge fittings are generally used to discharge a supplied fluid in a desired release form. To this end, the fluid is guided in the discharge tube, wherein the discharge tube can depending on requirements and application either directly serve as a restriction for the fluid guided therein or as a containment tube for an inner tube (for example for a suction hose) which directly guides the fluid and is contained therein.

[0003] The discharge fitting can be in particular a sanitary (or sanitäre, i.e. sanitizing) discharge fitting, i.e. a discharge fitting used in sanitary technology, which can in particular be used to provide water at a washbasin, a bathtub or the like.

[0004] A discharge fitting of this type in the form of a sanitary discharge fitting with a pivotably restricted discharge tube is disclosed in the publication DE 10 2015 219 175 A1.

[0005] It is common in the conventional discharge fittings of the type observed at the outset that the releasable tube connection is embodied as a threaded connection or as a lockable snap connection in the case of a radial bore in the coupling end region of the respective discharge tube. The radial bore in the discharge tube serves for the passage of a bolt, or serves as a recess into which a corresponding unlocking nose at the coupling shaft or at the base body can engage. A radial bore in the discharge tube which is visible from the outside can impair the design of the discharge fitting, or corresponding measures need to be taken so that the bore is not easily visible from the outside. A sanitary discharge fitting with such a radial bore in the discharge tube is present on the market by the applicant under the model designation Talis M54 single lever kitchen mixer. SUMMARY

[0006] The technical problem of the invention is to provide a discharge fitting of the type mentioned at the outset which offers further advantages with respect to the prior art described above, in particular in terms of design, functionality and / or manufacturing or assembly outlay.

[0007] The invention solves this problem by providing a discharge fitting according to the invention. Advantageous refinements of the invention are specified herein, the wording of which is hereby incorporated by reference as part of the description. This includes in particular all embodiments of the invention resulting from the combination of the features defined according to the invention. The invention is based on the idea of providing a discharge fitting with a releasable pipe connection between a discharge pipe and a pipe connection of a base body of the discharge fitting, wherein the releasable pipe connection is a latching connection with a latching element which is held on a coupling shaft, and wherein the coupling shaft has a latching nose which serves as a release handling interface and which is exposed in an axial gap between an end of the discharge pipe and an oppositely disposed end of the pipe connection.

[0008] In the discharge fitting according to the invention, an axial gap is formed between an end of the discharge pipe and an oppositely disposed end of the pipe connection, and the releasable pipe connection is a unlockable latching connection with a latching element which is held on a coupling shaft, the coupling shaft having a latching nose which serves as a release handling interface and which is exposed in the axial gap between the end of the discharge pipe and the oppositely disposed end of the pipe connection.

[0009] Thus, the discharge pipe can be releasably held at the coupling shaft, and thus at the base body of the discharge fitting, by means of a latching connection which can be relatively easily realized and easy to handle. Here, the coupling shaft can be a one-piece component of the base body or prefabricated as a separate member from the base body and mounted at the base body, for example by means of an adhesive connection or a releasable screw connection. No radial bore in the discharge pipe is required for the latching connection, since the latching nose is exposed in the axial gap between the discharge pipe and the pipe connection of the base body, in particular in such a way that it is accessible to a user in order to handle it for unlocking the latching connection. The axial gap can offer design advantages over a radial bore and can be realized with less outlay, since it does not require a machining of the discharge pipe. The latching nose serves as a corresponding release handling interface, i.e. if a user wants to detach, i.e. remove, the discharge pipe from the base body, he can unlock the latching element and thus the latching connection by handling the latching nose.

[0010] The discharge fitting can be manufactured with relatively little outlay with the implementation of the releasable pipe connection according to the invention and can be assembled, i.e. put together, with relatively little outlay. At the same time, the advantages of a latching connection, for example compared to a screw connection, are achieved, for example easier and faster assembly or disassembly, without the specific latching connection imposing restrictions on the functionality of the discharge fitting.

[0011] In a refinement of the invention, the latching connection comprises a latching structure at the inner side of the discharge pipe and a counter-latching structure at the outer side of the latching element which is oppositely disposed to the inner side of the discharge pipe, wherein the counter-latching structure cooperates with the latching structure in a form-fitting latching manner. The latching structure is configured as a latching recess or a latching protrusion which can be latched into the latching recess, and the counter-latching structure is correspondingly configured as a latching protrusion which can be latched into the latching recess or a latching recess which latching-ingly receives the latching protrusion. This is a technically and functionally advantageous implementation of the latching connection. In alternative embodiments, the latching connection can be implemented in other conventional ways.

[0012] In an improvement of the application, the latching connection is configured to automatically reach its latched position by the insertion of the discharge pipe onto the coupling shaft. This measure advantageously simplifies the bringing of the latching connection into its latched position, i.e. its position in which it can be unlocked by the user. In this case, the latching is automatically performed by the movement of the discharge pipe when it is inserted by the user onto the coupling shaft of the base body. In alternative embodiments, the latching connection can be actively brought into its latched position by the user, if this is advantageous for certain use cases.

[0013] In an improvement of the application, the latching element is held at the coupling shaft with its unlocking nose elastically pre-tensioned radially outwards. In this case, when the discharge pipe is to be assembled at the base body, the latching element can be pressed with its unlocking nose radially inwards against the elastic pre-tension, for example by active pressing onto the latching element by the user, or, as described above, automatically by the insertion movement of the discharge pipe onto the coupling shaft, so that after the insertion of the discharge pipe onto the coupling shaft is completed, it springs back again radially outwards by the elastic pre-tension and thus automatically reaches the latching position or latched position, which can be unlocked by the user.

[0014] In an improvement of the application, the latching element has an elastically yielding latching tongue extending in the axial direction of the coupling shaft, from the free end of which the unlocking nose radially protrudes. This is a technically and functionally advantageous implementation of the latching element. In alternative embodiments, the latching element is designed differently, for example in the case of the use of a latching ring pre-tensioned by a spring or a rubber-elastic element.

[0015] In an improvement of the application, the latching element is held at an elastically expandable open clamping sleeve, which has a circumferential gap and is inserted radially onto the coupling shaft and is held axially fixed there, wherein the unlocking nose is opposite the circumferential gap of the clamping sleeve. This is an advantageous way of holding the latching element at the coupling shaft. The clamping sleeve here acts as a holding unit for the latching element and can be easily inserted radially from the outside onto the coupling shaft, wherein the clamping sleeve is held axially fixed, i.e. axially immovably, at the coupling shaft. Since the unlocking nose is opposite the circumferential gap of the clamping sleeve, it can be pressed in particular radially inwards into the circumferential gap for unlocking the latching connection. In alternative embodiments, the latching element can be held directly at the coupling shaft without the mediation of a clamping sleeve, or an open or closed clamping sleeve axially inserted onto the coupling shaft is used for holding the latching element. It can be expedient in this case to widen the axial gap at the end side of the discharge pipe or at the end side of the pipe connection by a recess, into which the unlocking nose is then arranged.

[0016] In one embodiment of the invention, the locking element is held at the clamping sleeve by a snap-fit ​​connection. This provides an advantageous, simple, and reliable way to retain the locking element at the clamping sleeve. Alternatively, other connection types for this purpose are also possible, such as force-fit connections or threaded connections.

[0017] In one embodiment of the invention, the clamping sleeve has a radially outwardly projecting partially circular flange at its end, which extends into the axial gap between the end of the discharge pipe and the opposing end of the fitting. This provides design and / or functional advantages. The partially circular flange of the clamping sleeve can completely or partially fill the axial gap between the end of the discharge pipe and the opposing end of the fitting in the base in the respective circumferential region. Furthermore, when needed, the partially circular flange of the clamping sleeve can provide a partially annular sliding surface for the inserted discharge pipe (particularly for the end it abuts against), which is particularly advantageous for embodiments in which the discharge pipe is pivotally mounted on the base. In an alternative embodiment, the radially outwardly projecting partially circular flange of the clamping sleeve can be omitted if it is not required.

[0018] In another embodiment of the invention, the locking element is constructed as a partial annulus, and the unlocking nose is constructed as a radially outwardly projecting partial circular flange that extends at the height of its radially projecting partial circular flange over the main portion of the length of the circumferential gap of the clamping sleeve in the axial gap between the end of the discharge pipe and the opposing end of the pipe fitting. This feature advantageously complements embodiments of the clamping sleeve having the aforementioned radially outwardly projecting partial circular flange. The partial circular flange of the clamping sleeve and the partial circular flange provided by the unlocking nose of the locking element can be supplemented into a fully or nearly fully circular radial flange that substantially fills the axial gap between the end of the discharge pipe and the opposing end of the pipe fitting throughout the entire circumference. Only two radial gaps, which are desiredly very narrow, are left between the two partial circular flanges, allowing the unlocking nose to move radially relative to the partial circular flange of the clamping sleeve, i.e., by translational movement in the radial direction, so as to be brought to the operating position where it unlocks the locking connection. In an alternative embodiment, the unlocking nose does not form a flange that projects radially outward from the rest of the locking element, wherein it remains accessible via an axial gap between the end of the discharge tube and the opposite ends of the fitting for unlocking operation by the user.

[0019] In an improved embodiment of the invention, the discharge pipe is constructed without radial holes on its circumferential side within an axial distance of 5 cm from the axial clearance and / or the end of the discharge pipe. In other words, at least in this axially extended portion, the discharge pipe retains no radial holes visible from the outside, which is particularly advantageous in terms of design. Attached Figure Description

[0020] Advantageous embodiments of the invention are illustrated in the accompanying drawings. These and further embodiments of the invention are explained in more detail below. Herein:

[0021] Figure 1 A perspective view of a discharge fitting having a base and a discharge tube held in the base via a locking connection is shown.

[0022] Figure 2 An exploded view of the ejector fitting is shown before the locking connector is installed at the connecting shaft of the base.

[0023] Figure 3 It shows Figure 2 Detailed view of the area of ​​the locking connection part.

[0024] Figure 4 The image shows the clamping sleeve for the locking connection being installed at the connecting shaft. Figure 3 The view,

[0025] Figure 5 This shows the locking element of the locking connector after it has been installed at the connecting shaft. Figure 4 The view,

[0026] Figure 6 It shows Figure 5 The view after the discharge pipe has been inserted into the connecting shaft.

[0027] Figure 7 It shows along Figure 6 Longitudinal section view of line VII-VII in the middle

[0028] Figure 8 It shows along Figure 7 The cross-sectional view of line VIII-VIII in the diagram. Detailed Implementation

[0029] The accompanying drawings exemplarily illustrate a discharge fitting according to the invention as a feasible embodiment, which can be used in particular as a sanitary discharge fitting. As can be seen from this example, the discharge fitting according to the invention comprises a base 1 and a discharge tube 4, the discharge tube being removably mounted on the base 1 with a connecting end region 5, and a detachable tube connector for removably mounting the discharge tube 4 on the base 1. The base 1 includes a tube fitting 2 and a connecting shaft 3 projecting axially upward from the tube fitting 2 with a smaller diameter. The discharge tube 4 is inserted into the connecting shaft 3 with its connecting end region 5. The end 6 of the discharge tube 4 is opposite to the end 7 of the tube fitting 2. The detachable tube connector holds the discharge tube 4 at its connecting end region 5 at the connecting shaft 3 to prevent axial displacement.

[0030] In the example shown, the connecting shaft 3 is screwed into the pipe fitting 2 of the base 1. In an alternative embodiment, the connecting shaft 3 is otherwise connected to the pipe fitting 2 of the base 1, or it is formed as a single piece with the pipe fitting 2 or the base 1.

[0031] For example, especially from Figure 6 and Figure 7 As can be seen, an axial gap 8 is formed between the end 6 of the discharge pipe 4 and the opposite end 7 of the pipe joint 2.

[0032] Typically, the detachable tube connection is implemented as an unlockable locking connection 9 having a locking element 10 held at the connecting shaft 3. The locking element 10 has an unlocking lug 11 that serves as an unlocking operation interface, which, in particular, is located from... Figure 6 and Figure 7 Visibly exposed in an axial gap 8 between the end 6 of the discharge pipe 4 and the opposing end 7 of the pipe fitting 2 in a maneuverably accessible manner. In other words, the unlocking lug 11 can be accessed from the outside via the axial gap 8 so that it can be manipulated for the purpose of unlocking the locking connection 9.

[0033] In an advantageous embodiment, the locking connection 9, as in the example shown, includes a locking structure 12 located on the inner side 13 of the discharge pipe 4 and a mating locking structure 14 interacting with the locking structure 12 in a form-fitting locking manner on the outer side 15 of the locking element 10, which is opposite to the inner side 13 of the discharge pipe 4. Of the locking structure 12 and the mating locking structure 14, one is configured as a locking recess, and the other as a locking protrusion that can be engaged into the locking recess. In the example shown, the locking structure 12 is configured as a locking recess and the mating locking structure 14 is configured as a locking protrusion. In the example shown, the mating locking structure 14 specifically includes a rear-locking locking shoulder 14a on the outer side 15 of the locking element 10, which can be rear-locked by a radially inwardly projecting locking protrusion 12a formed through the locking recess on the inner side 13 of the discharge pipe 4, such as particularly from… Figure 7 As can be seen, the unlocking nose 11 is not part of the mating locking structure 14, that is, it is not intended to work in a locking manner with the locking structure 12 of the discharge pipe 4, and is arranged to be axially spaced from the locking structure 12.

[0034] In the corresponding implementation of the discharge accessory, the locking connection part 9, as shown in the example, is configured to automatically reach its locking position 16 by inserting the discharge pipe 4 onto the connecting shaft 3. Figure 7 and Figure 8 As shown in the image.

[0035] In an advantageous embodiment, the locking element 10 is held at the connecting shaft 3 with its unlocking lug 11 radially outwardly elastically preloaded, as shown in the example.

[0036] In the corresponding implementation, the locking element 10, as in the example shown, has an elastically yielding locking tongue 10a extending in the axial direction of the connecting shaft 3, and an unlocking lug 11 protruding radially from its free end, such as from... Figures 3 to 5 and Figure 7 It can be seen that...

[0037] In an advantageous embodiment of the ejector fitting, the locking element 10, as in the illustrated example, is held at an open, resiliently deployable clamping sleeve 17 with a circumferential gap 18, particularly from... Figure 3 As can be identified in the image. The clamping sleeve 17 is radially inserted into the connecting shaft 3 from the outside and is axially fixed therein, wherein the unlocking lug 11 is positioned opposite the circumferential clearance 18 of the clamping sleeve 17.

[0038] In the corresponding implementation, the locking element 10 is held at the clamping sleeve 17 by a snap-fit ​​connection 19, as shown in the example. In the example shown, the snap-fit ​​connection 19 includes a lateral snap-fit ​​nose 19a at the circumferentially curved end of the locking element 10, which is designed as a clamping clamp in the circumferential direction, and a corresponding snap-fit ​​recess 19b at the clamping sleeve 17, into which the snap-fit ​​nose 19a can be snapped. The clamping sleeve 17 is secured by an inclined starting surface 20 (see [reference needed]) positioned in front of the snap-fit ​​recess 19b. Figure 3 and Figure 8 This makes it easy for the latch nose 19a to snap onto or latch onto the clamping sleeve 17 and to snap into or latch into the latch recess 19b, wherein the clamp-shaped locking element 10 may be slightly widened by being made of a suitably elastic yielding material so that its unlocking nose 19a can then be pre-tightened to snap into the latch recess 19b of the clamping sleeve 17.

[0039] In an advantageous embodiment, the clamping sleeve 17, as in the illustrated example, has a radially outwardly projecting partially circular flange 21 at end 17a, for example, see Figure 3 The circular flange 21 of the clamping sleeve 17 extends in the axial gap 8 formed between the end 6 of the discharge pipe 4 and the opposite end 7 of the pipe fitting 2, especially as Figure 7As can be seen, in the example shown, the end 6 of the discharge pipe 4 axially abuts against the radial flange 21 of the clamping sleeve 17, and the clamping sleeve 17 is positioned on the end 7 of the pipe fitting 2 with its radial flange 21. In other words, in the example shown, the radial flange 21 of the clamping sleeve 17 defines the axial clearance 8 between the pipe fitting 2 and the discharge pipe 4. If the discharge pipe 4 is pivotally held at the connecting shaft 3 or the base 2, the radial flange 21 of the clamping sleeve 17 can also act as a sliding ring or sliding surface if needed, on which the end 6 of the discharge pipe 4 can slide relative to the end 7 of the pipe fitting 2 during pivoting.

[0040] In an advantageous embodiment, as shown in the example, the locking element 10 is constructed as a partially annular shape, also referred to above as a clamp shape, and the unlocking nose 11 is correspondingly constructed as a radially outwardly projecting partially circular flange. Here, the unlocking nose 11, as such a radial flange, preferably extends circumferentially in the main portion of the circumferential length of the circumferential gap 18 of the clamping sleeve 17, at the height of the radially partially circular flange 17a, in the axial gap 8 between the end 6 of the discharge pipe 4 and the opposing end 7 of the pipe fitting 2. Thus, the unlocking nose 11 at least partially and preferably completely or nearly completely fills the gap in the axial gap 8 left by the circumferential gap 18 of the clamping sleeve 17, which is not closed by the radially partially circular flange 21 of the clamping sleeve 17. The gap remaining between the radial flange 21 of the clamping sleeve 17 and the unlocking nose 11 may optionally be maintained to facilitate movement of the unlocking nose 11 relative to the clamping sleeve 17.

[0041] In a corresponding implementation, as shown in the example, the discharge pipe 4 is constructed without radial holes on its circumferential side at an axial distance of 5 cm from the axial clearance 8 and / or the end 6 of the discharge pipe 4. Therefore, the discharge pipe 4 is not visually affected by externally visible radial holes, at least in this axially extended portion.

[0042] As from Figure 1 and Figure 7As can be identified, the discharge fitting shown is designed to output the same or two different fluids via a first fluid guide 22 or a second fluid guide 23. For this purpose, the discharge pipe 4 is suitably implemented as a dual-channel type. The inner pipe 24 extends through the connecting shaft 3 to the pipe fitting 2 or the base 1, and continues in the fluid exit direction as a pipe elbow for the first fluid guide 22, wherein the fluid exits at the end of the pipe elbow. The pipe elbow can in particular be a flexible hose elbow made of a flexible hose material. The annular space between the inner pipe 24 and the connecting end region 5 of the connecting shaft 3 or the discharge pipe 4 forms the second fluid guide 23, which continues as a straight-projecting pipe that acts at its end as a retainer for the end region of the pipe elbow for the first fluid guide 22, and in… Figure 1 The lower side has a fluid outlet for the second fluid guide 23. Figure 2 and Figure 8 For simplicity, the first fluid guide 22 along with the inner tube 24 is omitted.

[0043] The fluid output can be adjusted by the user via a mixer and / or shut-off unit 24, which can supply two fluids, such as cold water and hot water in the case of sanitary applications, via an associated supply line 25. The user can then adjust the amounts of cold and hot water, thus preparing mixed water at the desired temperature, and selectively output the mixed water via one or both fluid guides. Furthermore, the sanitary fitting shown is equipped with conventional fastening devices 26, which are not of further interest here, for example, to mount the sanitary fitting to a washbasin or bathtub.

[0044] The discharge fitting according to the invention enables advantageous and simple assembly and disassembly of the discharge pipe 4 at the base 1. For assembly, the clamping sleeve 17 is first placed radially from the outside or fastened onto the connecting shaft 3. Figure 2 and Figure 3 The clamping sleeve 17 is shown prior to this assembly step. Figure 4 The arrangement after the clamping sleeve 17 is installed at the connecting shaft 3 is shown. Subsequently, the locking element 10 is radially inserted or snapped onto the clamping sleeve 17 from the outside, wherein the locking tongue 10a and the unlocking lug 11 are located in the circumferential gap 18 of the clamping sleeve 17 and are therefore not hindered by the clamping sleeve 17 in their radial engagement and unlocking movements. Figure 5 The arrangement after the locking element 10 is installed is shown.

[0045] Subsequently, the discharge pipe 4 is axially inserted into the connecting shaft 3, which has a clamping sleeve 17 and a locking element 10 fixed thereon. For this purpose, the discharge pipe 4 has an inner diameter in the associated connecting end region 5 that is larger than the outer diameter of the connecting shaft 3. When the discharge pipe 4 is inserted into the connecting shaft 3, the discharge pipe 4 presses the locking element 10 with its end 6 and, in particular, presses its outer side 15 radially inward with the mating locking structure 14, which can be facilitated optionally by the associated starting ramp.

[0046] When the discharge pipe 4 is fully inserted, it uses its locking structure 12, and especially its locking protrusion 12a, to lock the mating locking structure 14 of the locking element 10 at the rear, and especially its locking shoulder 14a, which can lock at the rear. Thus, the locking element 10 can be elastically and radially retracted by its locking tongue 10a. Therefore, the discharge pipe 4 is axially and securely fastened to the base 1, and the assembly of the discharge pipe 4 is complete.

[0047] Therefore, as explained, in this embodiment of the discharge fitting, by inserting the discharge tube 4, the locking connection 9 automatically moves from its initial position corresponding to the locking position to its unlocked position by first pressing the locking element 10 radially inward, and then returns to its locked position, in which the discharge tube 4 is fixed to prevent axial removal at the connecting shaft 3 and thus held at the tube joint 2 or the base 1.

[0048] To remove the discharge pipe 4 from the base 1, the user first unlocks the locking connection 9. To do this, he presses the unlocking lug 11 radially inward within the axial clearance 8. For this, he can use, for example, a suitable tool such as a screwdriver. The unlocking lug 11, along with its mating locking structure 14a, elastically yields and moves radially inward, thereby canceling the rear locking of the locking shoulder 14a through the locking protrusion 12a of the outer pipe 4, i.e., the locking connection 9 reaches its unlocked position. Therefore, the discharge pipe 4 can be axially pulled out from the connecting shaft 3 of the base 1.

[0049] like Figure 8 As can be identified in the example shown, one or more optional axial support rods 17b on the outside of the clamping sleeve 17 can provide additional support for the clamping sleeve 17 on the inside of the discharge pipe 4 to resist the radial operating force on the unlocking lug 11, and thereby provide a locking element 10 held at the clamping sleeve 17 so that the clamping sleeve 17 does not retract due to the operating force in order to unlock the locking connection 9.

[0050] As will become clear from the shown and further embodiments described above, the present invention advantageously provides drain fittings, for example, usable in hygienic technology, offering particular advantages in terms of design, low manufacturing or assembly costs, and high functionality. Drain fittings are especially useful in sanitary areas of bathrooms and kitchens, including washbasins, other washbasins, and bathtubs.

Claims

1. A discharge fitting, having -The base (1) has a pipe joint (2) and a connecting shaft (3) protruding axially from the pipe joint (2) with a smaller diameter. - A discharge pipe (4), which is detachably mounted at the base (1) via a connecting end region (5), wherein, The discharge pipe (4) is inserted into the connecting shaft (3) at its connecting end region (5), and the end of the discharge pipe (4) is positioned opposite the end of the pipe connector (2). - A detachable pipe connection that holds the discharge pipe (4) at its connection end region (5) at the connecting shaft (3) to prevent axial displacement. Its features are, - An axial gap (8) is formed between the end of the discharge pipe (4) and the opposite end of the pipe joint (2), and - The detachable pipe connection is an unlockable locking connection (9) having a locking element (10) held at the connecting shaft (3), the locking element having an unlocking lug (11) that acts as an unlocking operation interface, which is exposed in an axial gap (8) between the end of the discharge pipe (4) and the opposite end of the pipe fitting (2) in an operable approach manner.

2. The discharge accessory according to claim 1, characterized in that, The discharge accessory is a hygienic discharge accessory.

3. The discharge accessory according to claim 1, characterized in that, The locking connection part (9) has a locking structure (12) on the inner side (13) of the discharge pipe (4) and a mating locking structure (14) on the outer side (15) of the locking element (10) opposite to the inner side (13) of the discharge pipe (4), which works together with the locking structure (12) in a shape-fitting locking manner. In the locking structure (12) and the mating locking structure (14), one is constructed as a locking recess, and the other is constructed as a locking protrusion that can be locked into the locking recess.

4. The discharge fitting according to any one of claims 1 to 3, characterized in that, The locking connection part (9) is configured to automatically reach its locking position (16) by inserting the discharge pipe (4) onto the connecting shaft (3).

5. The discharge fitting according to any one of claims 1 to 3, characterized in that, The locking element (10) is held at the connecting shaft (3) with its unlocking lug (11) being held radially outward and elastically pre-tight.

6. The discharge fitting according to any one of claims 1 to 3, characterized in that, The locking element (10) has an elastically yielding locking tongue (10a) extending in the axial direction of the connecting shaft (3), and the unlocking nose (11) protrudes radially from the free end of the locking tongue.

7. The discharge fitting according to any one of claims 1 to 3, characterized in that, The locking element (10) is held in a resiliently deployable, open clamping sleeve (17) having a circumferential clearance (18) and being radially inserted into the connecting shaft (3) and held axially fixed thereon, wherein the unlocking lug (11) is positioned opposite the circumferential clearance (18) of the clamping sleeve (17).

8. The discharge fitting according to claim 7, characterized in that, The locking element (10) is held at the clamping sleeve (17) by the snap-fit ​​connection (19).

9. The discharge fitting according to claim 7, characterized in that, The clamping sleeve (17) has a radially outwardly projecting partial circular flange (21) at its end, which extends in the axial gap (8) between the end of the discharge pipe (4) and the opposite end of the pipe joint (2).

10. The discharge fitting according to claim 9, characterized in that, The locking element (10) is partially annular, and the unlocking nose (11) is a radially outwardly projecting partially circular flange that extends in the axial gap (8) between the end of the discharge pipe (4) and the opposite end of the pipe connector (2) at the height of its radially projecting partially circular flange (21) on the main part of the length of the circumferential gap (18) of the clamping sleeve (17).

11. The discharge fitting according to any one of claims 1 to 3, characterized in that, The discharge pipe (4) is constructed without radial holes on its circumferential side within an axial distance of 5 cm from the axial gap (8) and / or the end of the discharge pipe (4).

Images