CN110100068B

CN110100068B - Flush refill device for a toilet

Info

Publication number: CN110100068B
Application number: CN201780080341.6A
Authority: CN
Inventors: A·黑尔布林
Original assignee: Geberit International AG
Current assignee: Geberit International AG
Priority date: 2016-12-23
Filing date: 2017-12-15
Publication date: 2021-07-30
Anticipated expiration: 2037-12-15
Also published as: EP3339521A1; ES2871698T3; EP3339521B1; DK3339521T3; PT3339521T; CN110100068A; WO2018114051A1; PL3339521T3

Abstract

The invention relates to a flushing retrofitting device for a toilet (10), comprising an inclined upper side (13) of a flushing technology housing (12), which has a smooth transition to a toilet seat (11) and is concave, low and does not extend too steeply.

Description

Flush refill device for a toilet

Technical Field

The invention relates to a flushing add-on device for mounting on a toilet bowl and forming a flushing toilet with the toilet bowl.

Background

Such flushing retrofitting devices have long been known, primarily for use in east asia and are increasingly used in many other places, in particular in western countries. The flush-loading device has several advantages in this respect over so-called monoblock devices. Due to the feasibility of combination with a common toilet bowl, the flushing retrofitting device can usually be realized as a cheaper solution, and in addition the flushing retrofitting device can also be retrofitted. Finally, the flush retrofit equipment can be removed and serviced in the event of technical problems without having to deactivate the toilet and without having to have an installer present.

Disclosure of Invention

The inventors have, based on experience to date, proposed an improvement in the practical application properties of flush-plus-mount devices of this type.

The object of the invention is achieved by a flushing retrofitting device for forming a flushing toilet by mounting on a toilet bowl, having: a flushing housing with a flushing device located therein, a flushing arm of the flushing device, a toilet seat mounted on the flushing housing and surrounding an upper opening of the toilet bowl, which flushing arm, in the state in which the flushing attachment is mounted on the toilet bowl, can be moved out of the flushing housing into a cleaning position for cleaning a toilet user, wherein the flushing housing has an upwardly directed inclined surface on the side pointing towards the toilet seat, characterized in that the inclined surface of the flushing housing is connected smoothly, i.e. without a height jump greater than 5mm, to the adjacent surface of the toilet seat, more precisely within at least the middle 150mm in a horizontal direction perpendicular to the depth direction from the front edge of the toilet seat to the distal end of the flushing housing towards the flushing housing 12.

Preferred embodiments are the subject matter of the dependent claims and will be explained in detail below as well.

The invention is based on the basic idea of: the area which is reached "behind", i.e. generally in the direction of the wall of the rear part of the toilet, with respect to the arrangement of the technical housing in which the flushing device is placed, is available for the sitting user. This on the one hand enables a comfortable and ergonomic seating depth and also enables a large opening in the toilet seat in this direction in the desired manner and on the other hand avoids an overall excessive structural depth of the retrofitting device in this direction.

Here, a smooth transition between the toilet seat surface and the surface of the flushing technology housing is preferred, which in particular shall mean a transition with a height jump (oriented perpendicular to the respective surface) of at most 5mm, preferably at most 4mm, 3mm, 2mm or even only 1.5 mm.

Here, the abrupt height change relates to a direction which is vertical with respect to the space, i.e. generally not perpendicular to the relevant surface due to the oblique orientation. The small or insignificant abrupt change in height makes the transition less or impossible for the user, in particular for his buttocks, to feel when sitting down and the user can also recognize that it exceeds a smooth connection for the region involved in sitting down.

Preferably, only a small joint width occurs here, so that the flush-technology housing is relatively close to the surface of the toilet seat corresponding to the height jump. Preferably, in this connection, the joining width is less than 8mm, particularly preferably also less than 6mm, 5mm, 4mm or even less than 3 mm. In this regard, the connection is fairly "stable" and continuous.

These solutions are applied above all in the middle of the connection, to be precise in the width direction, i.e. in the horizontal direction perpendicular to the depth direction. In particular these statements should apply to the middle 150mm and preferably even to the middle 175mm or 200 mm.

The described smooth connection is preferably achieved in that the described inclined surface of the flushing technology housing continues to some extent below the part of the toilet seat connected to the inclined surface, to be precise with a height jump which, taking into account the thickness of the toilet seat, achieves the described smooth connection, i.e. compensates the toilet seat to some extent.

For clarity: the depth direction in the case of mounting on or in front of a wall section in general refers to a direction perpendicular to the wall section, where the wall section is of course not important in the present invention. Generally from the larger surface area above the toilet bowl for mounting the technical housing to the point of the bowl rim furthest away therefrom (or from the technical housing to the point of the toilet seat furthest away therefrom if a closed-front seat is assumed without limitation herein) or vice versa; in other words: in the normal sitting position of the user is the horizontal viewing direction of the user.

At the same time, the inventors have considered that the part of the edge region of the flushing retrofitting device which is part of the sitting position of the user should not be too high for this purpose. It is generally noted in practice that the flush attachment device rises more and more significantly in the rear region of the toilet seat and in the region of the technical housing. This in turn already raises the sitting position there and the more the sitting position rests on the technical housing, the more.

For this purpose, an empirical distance of 370mm from the front edge of the toilet seat is characterized by a seating depth which is set back in the depth direction. In this case, according to the invention, the upper side of the flushing retrofitting device should be no higher than 56mm, preferably at most 54mm, relative to the lower side of the flushing retrofitting device mounted on the toilet bowl. In this case, the upper side can still belong to the rear region of the toilet seat or already to the surface of the flushing housing, or the upper side can just as well be the transition between them.

At the same time, the flushing technique housing should preferably already be "started" in this considered distance of the toilet seat front edge. Therefore, at least in a partial region of the width of the flushing retrofitting device (i.e. with respect to the horizontal direction perpendicular to the depth direction), the inner partial volume of the flushing technology housing should lie below the upper side of up to 56mm height. In this case, of course, the front of the flushing-technical housing is considered in particular, which contains the flushing arm, but the (simultaneously movable) flushing-arm part which is moved out of the actual flushing-technical housing is not considered as a housing part. Accordingly, the interior of the flushing-technical housing is designed as low as possible and space-saving in this region, so that, for example, only as few as possible exceeds the desired or required height through the cross section of the flushing arm.

In the described region of the interior of the rinse aid housing, which is located below the upper side of the rinse aid and at a distance of 370mm from the front edge, a clear height of up to 50mm, preferably up to 45mm, or even only 40mm, is preferably possible. Of course, this clear height increases significantly with increasing distance from the front edge of the toilet seat, in particular in order to install further flushing device components as flushing arms or possibly hot air blower arms or suction ducts of the odor suction device.

Preferably, the upper side of the flushing and loading device preferably extends less steeply after the described point at a distance of 370 mm. This can also be expressed in terms of a corresponding height dimension, wherein at a spacing 380 preferably a maximum of 70mm, preferably a maximum of 68mm, 66mm or even 64mm, at a spacing 390mm a maximum of 83mm, preferably a maximum of 81mm, 79mm or even only 77mm, and finally at a spacing 400mm a maximum of 100mm, preferably a maximum of 98mm, 96mm or only a maximum of 94 mm.

In most cases, these considerations also relate at least to the middle of the mentioned width of the flushing technology housing. Of course, the width of the flushing attachment housing can be of greater extent with a defined distance from the front edge of the toilet seat or the entire width can also meet this criterion here.

The flushing arm in turn preferably has a vertical extent (cross-sectional dimension in the vertical direction, i.e. generally not transversely to the longitudinal direction of the flushing arm) of at most 33mm, preferably at most 30mm or even at most only 28mm at the relevant location, i.e. below the upper side of the respective flushing attachment at a distance of 370mm from the front edge of the toilet seat. In principle, thinner rinsing arms can also be realized. In the embodiment explained below, the dimension of the rinse arm in the vertical direction shown there is 26mm, wherein the rinse arm contains three water channels (one for two rinse nozzles and one for one nozzle washing function) in this dimension. In particular, the elimination of such a number of passages makes it possible to make the flushing arm thinner and thus in principle also to reduce the clear height of the flushing-technical housing and the height of the flushing retrofitting device even further. However, a certain lower limit is of course sensible, for example in the range of 10mm for a vertical sectional dimension through the flushing arm, for example 15mm or 20mm for a clear height of the interior of the flushing technology housing, and correspondingly for a flushing retrofitting device overall at the location described, for example 25 mm.

Furthermore, according to the invention, a simple and robust rinsing arm structure is provided, i.e. with a purely translatory and linear movement as well as a straight rinsing arm. In the prior art, curved flushing arms and curved movement tracks are occasionally encountered to reduce the space requirement in the flushing-technical housing, wherein in particular the latter causes greater mechanical losses.

The described height criteria alternatively relate to positions measured from other reference points: an ergonomically and constructionally important place for the flushing attachment is additionally the rear boundary of the opening of the toilet seat. Starting from the rear edge of the opening (or the front edge of the rear part of the toilet seat), the reference positions (370mm, 380mm, 390mm, 400mm) described are 31mm or 41mm or 51mm or 61mm, which is elucidated according to the embodiments. The above statements for the respective positions should alternatively also apply to reference points having a given distance dimension.

A possible third reference position is the penetration of the flush arm through a horizontal plane defined by the boundary between the flush attachment device and the toilet bowl, more precisely on the rear side of the flush arm, i.e. on the far side with respect to the middle of the opening of the toilet bowl. The horizontal plane is an upper closed plane of the toilet bowl, on which the flush attachment device is mounted. In this case, the rinse arm refers to a movable arm and no guide of the rinse arm is taken into account. This example is also used for illustration. The corresponding distance value (similar to 370mm, 380mm, 390mm, 400mm) is 15mm or 25mm or 35mm or 45 mm.

The above-mentioned opening in the toilet seat is also important for the distance between said front edge of the toilet seat and the other two reference points, said opening preferably having a size of at least 280mm, preferably with a lower limit of 285mm or even 290mm, more precisely in the same direction as the described dimension of 370 mm. However, in this context, it should be pointed out for the sake of clarity that the toilet seat does not necessarily have to have a closed-loop shape. The toilet seat has first of all an opening on its front side, i.e. on the far side with respect to the flushing technology housing. Thus, the opening is envisioned as closed for purposes of determining the minimum size just described.

Here, the curved surfaces held by the inside of the toilet seat at the right and left sides of the opening may be assumed to be continuous. Furthermore, the toilet seat does not necessarily have to be closed on the other side, on the flushing-technical housing, in particular because the actual sitting function, i.e. the design contacted by the buttocks of the user, can be partially transferred to the surface of the flushing-technical housing within the scope of the invention. In this case, for the sake of clarity, the toilet seat should also be adapted to the moving part in order to achieve a defined separation, since the toilet seat is in principle tiltable.

In the latter case, the size of the opening also extends to the corresponding resting area of the flushing-technical housing, thus, more precisely, in the flushing attachment as a whole, not just in the opening in the toilet seat itself. It is common and preferred that the toilet seat, i.e. seat, is closed circularly around.

The inclined surface of the flushing-technology housing has already been mentioned. The surface is oriented in the direction of the toilet seat with respect to the depth direction, but here obliquely upwards. This is also used, preferably when the toilet seat is closed proximally. The corresponding surface (of the toilet seat or of the flushing technology housing) in the middle of the region of 370mm from the front edge of the seat, more precisely with respect to the horizontal width direction (perpendicular thereto), preferably has an angle of at most 50 ° with respect to the horizontal. Similar to the already discussed height of the flush-loading device, this angle criterion can also be set for other locations located below: at a distance of 380mm (instead of 370mm), the angle should preferably be maximum 55 °, at a distance of 390mm, maximum 63 °, and finally at a distance of 400mm, maximum 75 °. More preferably, the upper limit is reduced by 3 °, 5 ° or even 7 ° at the four mentioned points, respectively. Furthermore, the statement also relates alternatively to two further reference positions and the spacing dimensions corresponding thereto, as described above.

It is also preferred that the surface of the flushing technology housing becomes steeper, i.e. concave, in the direction away from the toilet seat. This has been given from the angle values described above. The cavity is again preferably adapted at least in the middle in the width direction. Preferably, the criterion is at least 20mm in the extension along the longitudinal section, specifically with a preferred radius of curvature of between 80mm and 120 mm. The radius of curvature is more preferably more than 90mm or even 100mm or less than 180mm, 160mm or even 140 mm. The inclined design and the (possibly additional) concave design of the surface on the one hand are ergonomic and on the other hand provide more installation space within the flushing technology housing with increasing distance from the seat front edge.

Finally, the connection should be designed on the inclined surface of the flushing-technology housing without excessive angular jumps, more precisely preferably with an angular jump of not more than 30 °, particularly preferably not more than 20 °, even not more than 15 ° or 10 °. This again applies to the middle in the horizontal width direction and preferably within the middle 20 mm. In this widened seating region, the surfaces that can be felt by the user should be connected to one another without bending, wherein (in the case of a curved shape) the surfaces that are directly connected to one another and the local direction of the longitudinal profile in the depth direction are important for the angle criterion. This design achieves a comfortable and undisturbed tilting.

Of course, no small structures that are barely perceptible to the user are considered here, so that, for example, the connection interfaces are rounded or chamfered directly. Therefore, structures with lateral dimensions below 5mm are not considered.

As already mentioned, the flushing retrofitting device according to the invention is configured in and adjacent to the sitting area, lower than in the prior art and ergonomically configured to be inclined. Thereby naturally losing structural space relative to the prior art. In principle, this installation space can be compensated for by a greater "further back" installation height of the flushing technology housing, i.e. a greater distance from the front edge of the toilet seat. Preferably, however, the device as a whole remains relatively low, more precisely preferably the maximum height of the flushing technology housing is 130mm, even only 125mm, 120mm or maximum 115mm and 110 mm. Thus, the apparatus is less intrusive to the user behind his back.

Accordingly, the rinse arm is preferably mounted relatively flat, for example with an angle between 28 ° and 36 °, preferably between 30 ° and 34 °. Furthermore, the flushing arm can also be designed to be relatively short with respect to the retracted state. In order to finally achieve the correct impact point on the user's body in the case of a relatively short travel path for the anal irrigation, the spray angle (average angle of the spray jet) relative to the longitudinal axis of the irrigation arm may be selected to be greater than 95 ° and even greater than 98 °.

The geometrical statement about the height of the flush-loading device and the angle of inclination, the concavity, the smoothness and the edgeless surface of the upper side of the flush-loading device each apply individually and independently of one another, preferably also at least to the central 200mm in the horizontal direction perpendicular to the direction of the spacing dimension (370mm) and particularly preferably even to the central 250mm or 300 mm.

Finally, it is advantageous to reduce the proportion of space in the volume-limited rinsing technology housing by: a flow-through heater for heating the washing water is considered. The once-through heater can completely replace the boiler and its structural volume or reduce the space required by the boiler anyway by using the once-through heater and the boiler in combination. Of course, the invention can also be implemented with the aid of the geometric criteria given here and, in particular, in principle, also the dimensions of the embodiment with the boiler. The required boiler volume can be reduced not only by the flow-through heater, but also, in particular in the case of skillful nozzle designs, for example, by reducing the volumetric efficiency of the flushing jet, by pulsed operation of the flushing jet, and other possibilities.

Drawings

The invention is explained in detail below with reference to exemplary embodiments, wherein the individual features can also be of importance for the invention in other combinations and, as already mentioned, implicitly relate to the full scope of the invention.

FIG. 1 shows a longitudinal cross-sectional view of applicants' conventional flush-plus-install apparatus;

FIG. 2 shows a perspective view of the flush attachment apparatus of FIG. 1; and

fig. 3 shows a longitudinal sectional view of a flush toilet according to the invention, i.e. a flush attachment according to the invention on a conventional toilet bowl.

Detailed Description

The longitudinal cross-sectional view in FIG. 1 shows a conventional flush attachment apparatus "Geberit AquaClean 4000" for mounting on a toilet bowl. The vertical section divides the toilet seat 1 and the flushing-technical housing 2 in the middle and in the depth direction, respectively, and thus stands perpendicular to a wall, not shown, on which the flushing toilet formed by the flushing attachment is normally mounted (this wall runs at the right in the drawing beside the flushing attachment shown and here vertically and perpendicular to the drawing plane). In addition to the sectional view, the parts behind the section, i.e. for example the half of the toilet seat 1 and a part of the flushing technology in the flushing technology housing 2, are shown in a side view.

The toilet seat 1 is pulled relatively high in its right (near the housing) area, but outside the middle inclined upper side 3 of the flushing technology housing 2 (after the cross-section). The raised region terminates above (shown in fig. 2) in a hinge. I.e. in particular the raised area is located outside the middle 280 mm. For the seating of the user, the first mentioned inclined surface 3 is decisive, as it defines how far the user can slide backwards on the toilet seat 1. This spatial scale is more clearly seen in the perspective view in fig. 2. The dimensional information in fig. 1 will be given below.

Fig. 1 also shows a flushing arm 4 arranged in the flushing-technical housing 2, the distal end of which is also visible in fig. 2, the associated drive motor 5 and the hot water boiler 6 being shown together below in the perspective view of fig. 1 (i.e. in fig. 2 along the middle of the flushing-technical housing 2). The boiler 6 is provided with a number of components which need not be described in detail, such as fresh water inlets, thermocouple connections, etc. The boiler 6 occupies the volume to the left in fig. 1 up to the inclined wall (corresponding to the upper side 3) of the rinse-off housing 2 in the claims.

The height of the inclined upper side 3 is 59mm in the middle and above the main part of the seat width and rises steeply at a greater distance from the dimension of the toilet seat 1, the edge on the left in fig. 1 having a dimension of 370mm in fig. 1. In the other conventional model of the applicant, not shown, namely "AquaClean 5000", the height is already 70mm at 370mm and thereafter rises even more steeply.

In particular, fig. 2 shows that the user cannot slide back into the range of 370mm, but is limited to a practically central longitudinal extension of the toilet seat 1, i.e. about 356 mm.

In contrast, fig. 3 shows a flush toilet according to the invention in a longitudinal section, which has a toilet bowl 10 and a flush attachment according to the invention which is formed thereon. The toilet bowl 10 is conventional and can also be mounted under the flush attachment apparatus of fig. 1 or 2.

The flushing retrofitting device in turn has a toilet seat 11 and a flushing technology housing 12 with an inclined front side 13, the toilet seat 11 again being partially shown in a side view. In the flushing-technical housing 12, there is again a flushing arm 14, the flushing arm 14 being shown in dotted lines and in solid lines.

As is clearly evident from fig. 1, the flushing technology housing 12 is not only lower overall than the flushing technology housing 2 in fig. 1, but also rises less strongly together with the toilet seat 11, in particular in the rear region (close to the wall) and remains more gentle in inclination. Although the size of 294mm of the opening in the toilet seat is very large, a value of 53mm is given at a distance size of 370mm, instead of 59mm in fig. 1. At 380mm the difference is more pronounced, namely 63mm in fig. 3 and 78mm in fig. 1, and similarly 75mm and 92mm in fig. 3 and 107mm and 137mm in fig. 1 at 390mm and 400 mm. At a distance of approximately 405mm from the front edge of the toilet seat, the final height of the flushing-technical housing 12 is reached, which is only 105mm or 108mm, calculated on the cover plate, not shown, and is clearly just sufficient for mounting the rear end of the flushing arm 14 in the retracted state.

At the same time, the inclined upper side 13 and the part of the toilet seat 11 lying thereon on the side of the flushing technology housing in the lower region thereof rise relatively gently, where the slope increases, so that the overall shape is concave. The radius of the cavity here is 120mm and the inclination angles are 41 °, 47 °, 55 °, 65 ° respectively in the four distance dimensions mentioned (in the above-mentioned order).

It can be seen that the flush technology housing 12 is under the rear of the toilet seat 11 and immediately "extends down" up to about 380mm from the front edge, as to allow the flush arm 14 to be mounted thereunder. It should be noted here that a "full-size" rinsing arm with three water channels is used here, which does not vary from the mentioned ergonomic point of view and therefore has a cross-sectional dimension of 20mm, which means approximately 24mm in conversion to the vertical direction. Furthermore, a cleaning device (see EP 12000780.2) is present on the distal end of the rinse arm 14 oriented toward the lower left in its retracted position, which cleaning device likewise defines a certain height. In this way, more installation space can be provided in the interior of the technical flushing housing 12 at a later point in time, i.e. at distances of 390mm and 400mm, since there is a concave and raised curve behind his buttocks for the user, which is very ergonomic and not disconcerting.

The overall length of the rinsing arm is limited in view of the small overall height of the rinsing technology housing 12, which is desired here. As a result, the correct region can still be sprayed when the flushing arm 14 with the anal nozzle is given a defined inclination of 32 °, and the flushing jet is tilted 100 ° to the longitudinal axis of the flushing arm 14, i.e. for example tilted forward, as shown in fig. 3.

In addition to the embodiments described so far, the flushing-technical housing 12 is not designed in a plane offset in the direction perpendicular to the drawing plane to project further upward or further forward than shown and therefore does not disturb the user even in the eccentric region, even in the region of the hinge of the toilet seat 1 and the eccentric region like the raised part in fig. 2. The same applies to the rim of the flushing technology housing side of the toilet seat in fig. 3. In particular, the horizontal width of the structure of the flushing technology housing 12 shown in a sectional view in fig. 3 is 315mm, up to the lateral transition (and including the lateral toilet seat area 345mm) from the flushing technology housing 12 to the toilet seat 11, which is not shown.

Finally, the surface (naturally with the exception of the transition from the inclined top side 13 to the horizontal cover surface of the flushing-technical housing 12) is designed to be smooth and, in particular, the transition from the rear edge of the toilet seat 11 to the inclined top side 13 is smooth and edgeless, with a relatively narrow joint of 1mm and a continuously extending recess. Accordingly, there are no abrupt corners in the smooth connection, wherein, of course, small corners are not completely excluded due to tolerances, for example, when the toilet seat 11 is placed on the toilet bowl 10. As in the sense of a small tolerance of less than 1mm, there is no abrupt change in height in the vertical direction, so it can be considered that the concave line continues via the joint without interruption. Overall, the entire inclined upper side of the washing and fitting device, i.e. the section-wise shown region of the toilet seat 11, is actually considered as a widened seat region just as the inclined surface of the technical flushing housing 12 and serves to rest against the buttocks of the user and thus allows the user to sit relatively more posteriorly. The entire flushing retrofitting device or the flushing toilet formed therefrom can thus be constructed relatively compactly in the depth direction with a comfortable seating dimension and with a comfortable dimension of the opening of the toilet seat 11 of 294 mm.

For comparison, fig. 3 also shows the horizontal dimension of 339mm in the depth direction between the mentioned front edge of the toilet seat 11 and the front edge of its rear section (to the proximal end of the flushing-technology housing 12). By means of this dimension, the position for the representation of the height and angle dimensions can be converted into the corresponding reference value, i.e. for example, a distance of 31mm from the toilet seat edge up to a height of 53 mm. This relationship is equally important for situations where for certain reasons it is desirable for the toilet seat 11 to extend particularly far or very little in the depth direction, but nevertheless the basic idea of the invention should be maintained. It is also important for the ergonomic function and the resting position where the toilet seat opening starts in relation to the user.

Another meaningful reference relates to the flush arm 14 in its retracted state, i.e. it passes through a horizontal plane defined by the upper side of the toilet bowl 10. The distance between this position and the front edge of the front region of the toilet seat 11 is likewise shown and here is 355mm, so that the distance measure can also be converted into this reference value, i.e. a distance to the position of, for example, 15mm and a height of 53 mm.

Claims

1. A flush attachment apparatus for forming a flush toilet by mounting on a toilet bowl (10), the flush attachment apparatus having:

a flushing technology housing (12) comprising a flushing device located therein,

a flushing arm (14) of the flushing device, which in the state of the flushing retrofit device mounted on the toilet bowl (10) can be moved out of the flushing technology housing (12) into a cleaning position for cleaning a toilet user,

a toilet seat (11) mounted on the flushing technology housing (12) and surrounding the upper opening of the toilet bowl (10),

wherein the flushing-technical housing (12) has an upwardly directed inclined surface (13) on the side pointing towards the toilet seat (11),

characterized in that the inclined surface of the flushing technology housing (12) is connected smoothly by a smooth connection to the adjacent surface of the toilet seat (11) within at least the middle 150mm in the horizontal direction, perpendicular to the depth direction from the front edge of the toilet seat (11) at the distal end with respect to the flushing technology housing (12) towards the flushing technology housing (12), without abrupt height changes of more than 5mm,

wherein the inclined surface of the flushing technology housing (12) is concave with respect to a longitudinal section along the depth direction, has an extension along the longitudinal section of at least 20mm, and has a radius of curvature of between 80mm and 200mm, midway with respect to a horizontal direction perpendicular to the depth direction.

2. Flushing retrofitting device according to claim 1, wherein said smooth connection between said inclined surface of said flushing technology housing (12) and said adjacent surface of said toilet seat (11) is provided with a joint width below 8 mm.

3. The flushing retrofitting device according to claim 1, wherein the flushing technology housing (12) has a further inclined surface connected to the inclined surface and arranged below the adjacent surface of the toilet seat (11), the further inclined surface transitioning into the inclined surface of the flushing technology housing (12) at a sudden height change at a closing edge of the toilet seat (11) adjacent to the flushing technology housing (12), the sudden height change together with the thickness of the toilet seat (11) achieving the smooth connection, in the middle with respect to a horizontal direction perpendicular to a depth direction.

4. Flushing retrofitting device according to claim 1, wherein, with a distance of 370mm in the depth direction of the toilet seat (11) with respect to the front edge of the flushing technology housing (12) at the distal end thereof towards the flushing technology housing (12), the height of the flushing retrofitting device is maximum 56mm and/or maximum 70mm at a distance of 380mm and/or maximum 83mm at a distance of 390mm and/or maximum 100mm at a distance of 400mm, respectively in the middle with respect to a horizontal direction perpendicular to the depth direction, with respect to the underside of the flushing retrofitting device designed for mounting on the toilet bowl (10).

5. Flushing retrofitting device according to claim 1, wherein the height of the opening of the toilet seat (11) above the toilet bowl (10) is at most 56mm and/or at most 70mm at a distance of 41mm, and/or at most 83mm at a distance of 51mm and/or at most 100mm at a distance of 61mm, respectively in the middle with respect to a horizontal direction perpendicular to the depth direction, with respect to the underside of the flushing retrofitting device designed for mounting on the toilet bowl (10), at a distance of 31mm from the rear edge of the flushing technology housing (12) at the proximal end in the depth direction to the flushing technology housing (12).

6. Flushing retrofitting device according to claim 1, wherein the height of the flushing retrofitting device is maximum 56mm, and/or maximum 70mm at a distance of 25mm, and/or maximum 83mm at a distance of 35mm, and/or maximum 100mm at a distance of 45mm, with respect to the horizontal upper side closing plane of the toilet bowl (10), respectively in the middle with respect to a horizontal direction perpendicular to the depth direction, at a penetration point of the flushing arm (14) through the horizontal upper side closing plane of the toilet bowl (10) at a distance of 15mm in the depth direction with respect to a distal end of the toilet bowl (10) in the middle of the opening.

7. The flushing retrofitting apparatus of claim 6, wherein the movement motion of the flush arm (14) is a pure translational motion and the flush arm (14) is straight.

8. Flushing retrofitting apparatus according to any of the preceding claims, wherein the toilet seat (11) has an opening of at least 280mm in a direction from a front edge of the toilet seat (11) distal with respect to the flushing technology housing (12).

9. Flushing retrofitting device according to claim 1, wherein the inclination of the inclined surface (13) of the flushing retrofitting device with respect to the horizontal is maximum 50 ° at a distance of 370mm in the depth direction with respect to the distal front edge of the toilet seat (11) with respect to the flushing technology housing (12) and/or maximum 55 ° at a distance of 380mm and/or maximum 63 ° at a distance of 390mm and/or maximum 75 ° at a distance of 400mm, respectively centered with respect to the horizontal perpendicular to the depth direction.

10. Flushing retrofitting device according to claim 1, wherein the inclination of the inclined surface (13) of the flushing retrofitting device with respect to the horizontal is maximally 50 ° and/or is maximally 55 ° at a distance of 41mm, and/or is maximally 63 ° at a distance of 51mm, and/or is maximally 75 ° at a distance of 61mm, respectively in the middle with respect to a horizontal direction perpendicular to the depth direction, at a distance of 31mm from the rear edge of the opening of the toilet seat (11) above the toilet bowl (10) at the proximal end with respect to the flushing technology housing (12) in the depth direction.

11. The flushing retrofitting device according to claim 6, wherein the inclination of the inclined surface (13) of the flushing retrofitting device with respect to the horizontal is at most 50 ° and/or at most 55 ° at a distance of 25mm and/or at most 63 ° at a distance of 35mm and/or at most 75 ° at a distance of 45mm, respectively midway with respect to the horizontal direction perpendicular to the depth direction, when a penetration point of the flushing arm (14) through a horizontal upper side closing plane of the toilet bowl (10) with respect to the distal end of the opening of the toilet bowl (10) is at a distance of 15mm in the depth direction from the opening.

12. Flushing retrofitting device according to claim 1, wherein the inclined surface of the flushing technology housing (12) is connected to the adjacent surface of the toilet seat (11) without abrupt angle changes larger than 30 °, respectively centered with respect to a horizontal direction perpendicular to a depth direction.

13. The flushing retrofitting device according to one of the claims 2 to 6 and 9 to 12, wherein what is stated in the characterizing portion of claim 1 applies to the inclined surface of the flushing technology housing (12) within 200mm of the middle in the horizontal direction.

14. The rinse-added apparatus according to any of claims 6, 7 and 11, wherein the spray nozzles responsible for anal rinsing on the distal end of the rinse arm (14) have an average spray angle of at least 95 ° with respect to the longitudinal axis of the rinse arm (14).