Method for manufacturing a ceramic toilet bowl

Abstract

The present invention relates to a method for manufacturing a ceramic toilet (1) having a water inlet channel (4) for flushing water adjacent to the outer wall surface (2) of the ceramic toilet (1), the method comprising: d) filling a casting cavity formed by a multi-piece casting mold (6) with a filling slurry; f) opening a first sidewall forming part (6.1) after the blank forming time is completed; g) removing a molded body (7) from the water inlet channel (4) having at least a partially undercut structure relative to the main demolding direction of the first sidewall forming part (6.1); h) inserting a cover-shaped decorative piece (4.2) into the outer wall opening of the ceramic toilet (1) left after the molded body (7) is removed from the water inlet channel (4); and i) connecting the cover-shaped decorative piece to the material of the outer wall surface (2) of the ceramic toilet (1) by means of a decorative slurry.

Description

Technical Field

[0001] This invention relates to a method for manufacturing a ceramic toilet seat and a ceramic toilet seat produced by the method. Background Technology

[0002] Ceramic toilets used for seated or flush toilets (Dusch-WCs) are typically made using a ceramic casting process. Ceramic toilets with more complex geometries are usually manufactured at a higher cost, especially those with optimized water flow guidance. Summary of the Invention

[0003] Therefore, the object of the present invention is to provide an improved method for manufacturing ceramic toilet seats.

[0004] According to the present invention, this objective is achieved by a method for manufacturing a ceramic toilet, the ceramic toilet having a water inlet channel adjacent to the outer wall surface of the ceramic toilet for flushing water, wherein the manufacturing method comprises the following steps in sequence: d) Fill the gating cavity formed by the multi-piece casting mold with filler slurry; f) After the blank forming time (Scherbenbildungszeit) ends, open the first sidewall forming section of the multi-piece casting mold; g) Remove the molded body from the water inlet channel, which has at least a partially undercut structure relative to the main demolding direction of the first sidewall forming part; h) Inserting the cap-shaped decorative piece (Garnierstücks) into the opening in the outer wall of the ceramic toilet bowl after the molded body has been removed from the water inlet channel; and i) The lid-shaped decorative piece is connected to the outer wall material of the ceramic toilet by means of decorative paste (Garnierschlickers).

[0005] In short, the outer wall opening required for manufacturing a water inlet channel with an undercut structure is closed with a cap-like trim, and then the cap-like trim is fitted to the outer wall surface material. This allows for the simple formation of a water inlet channel with at least a partial undercut structure using a sidewall forming part (e.g., without the need for additional (filling) sliders), which has advantages, for example, in terms of mold cost and maintenance workload of the casting mold.

[0006] Therefore, in general, a water inlet channel with at least a partially undercut structure can be manufactured using relatively simple casting molds, eliminating the need for additional sliders. Furthermore, by attaching a cap-like trim to the outer wall, any transition that may exist between the cap-like trim and the outer wall of the ceramic toilet (e.g., in the form of a visually and / or tactilely perceptible line in the transition area) can be arranged in a secondary field of vision or in an area invisible to the user during normal use of the ceramic toilet. For example, this can improve the user's overall visual impression of the ceramic toilet and reduce the production workload required to create the transition between the cap-like trim and the outer wall.

[0007] Preferably, the decorative slurry differs from the filler slurry. For example, compared to the filler slurry, the decorative slurry contains additional additives, thereby improving the initial adhesion strength of the decorative slurry and thus allowing the cap-shaped decorative element to remain on the outer wall surface of the ceramic toilet. As a filler slurry, a ceramic suspension can be used, for example, poured into a plaster mold to manufacture the ceramic toilet. For example, the slurry can contain kaolin, quartz, feldspar, and / or suspensions thereof, wherein commonly used decorative or filler slurries for manufacturing ceramic toilets are well known to those skilled in the art.

[0008] According to the preferred design, the manufacturing method further includes the following steps (in the following order) before step d): a) Provide a multi-part casting mold, wherein the casting mold includes at least a rear wall forming part, two side wall forming parts and a trough forming part (Kesselformteil). b) Placing the molded body into the first sidewall forming portion of the two sidewall forming portions, such that the water inlet channel formed by the molded body for rinsing water has at least a partial undercut structure relative to the main demolding direction of the first sidewall forming portion; and c) Close the casting mold.

[0009] Here, the multi-piece casting mold includes at least a rear wall forming part, two side wall forming parts, and a groove forming part; preferably, the multi-piece casting mold consists only of these forming parts. The two side wall forming parts and the rear wall forming part are provided in such a way that they form the outer wall of the ceramic toilet, including the mounting surface on the rear wall side. The groove forming part is configured to form the inner wall surface of the ceramic toilet, extending from the upper edge region of the ceramic toilet to the wastewater outlet channel, which is typically located at the lowest point of the inner wall surface. The two side wall forming parts and the rear wall forming part are provided, for example, on a plane, and the groove forming part is fitted over the provided side wall forming parts and rear wall forming parts from above. In this case, cavities are formed between the various forming parts of the multi-piece casting mold, i.e., casting cavities to be filled with filling slurry.

[0010] Here, the main demolding direction of each part of a multi-piece casting mold is understood as the direction of movement of the corresponding part during the demolding process. Therefore, the main demolding direction refers to the direction in which the corresponding part of the multi-piece casting mold can be removed from the part (i.e., the ceramic toilet) without being obstructed by the undercut structure.

[0011] Preferably, before closing the casting mold, at least one molded body is placed into the first sidewall forming part of the two sidewall forming parts, such that the water inlet channel formed by the molded body (after the blank forming time is over) has an undercut structure relative to the main demolding direction of the first sidewall forming part. After placing the molded body, the casting mold is closed, and then (as described above) the casting cavity is filled with filler slurry.

[0012] According to the preferred design scheme, the manufacturing method further includes the following steps: e) Hold the filling slurry in a closed casting mold until the resulting green body reaches an average wall thickness of at least 8 mm, preferably at least 10 mm, 12 mm or 14 mm (possibly with a maximum upper limit of 20 mm, 18 mm or 16 mm, but not limited thereto).

[0013] Here, "average wall thickness" refers to the average value of the material thickness measured on a certain outer or inner wall surface of the corresponding wall, that is, the average thickness of the corresponding wall on that surface.

[0014] Preferably, after the billet formation time is completed, the filler slurry used to form the billet is discharged. The billet formation time may depend, for example, on the material composition used, the ambient temperature, or the manufacturing method employed. In the context of this invention, the billet formation time refers to the time required to achieve an average wall thickness of at least 8 mm (see above).

[0015] According to the preferred design, after step e) and before step f), the groove forming portion of the inner wall surface of the ceramic toilet is first removed. That is, removing the groove forming portion first is advantageous, for example, for the accessibility of the first sidewall forming portion.

[0016] According to the preferred design, the outer wall of the water inlet channel is at least partially formed by a cover-like decorative element, which is connected in a mating manner to the outer wall material of the ceramic toilet in step i). In short, the cover-like decorative element, which is materially connected to the outer wall, constitutes part of the outer wall of the water inlet channel. This allows for the formation of a water inlet channel with at least a partially undercut structure, as described above, and is also advantageous for optimizing the hydrodynamics of water flow within the water inlet channel.

[0017] According to the preferred design, the cover-shaped decorative element is convexly curved and is arranged on the convexly curved outer surface of the ceramic toilet seat in step h). Therefore, the convexly curved cover-shaped decorative element connects to and continues the convex outer surface of the ceramic toilet seat. This achieves both a visually appealing overall impression and, more importantly, facilitates water flow within the drainage channels (i.e., flow along the inner surface of the cover-shaped decorative element).

[0018] According to the preferred design, the cover-shaped decorative element is arranged on the side of the ceramic toilet facing the rear wall in step h). The "side of the ceramic toilet facing the rear wall" refers to the portion of the outer wall surface in which at least a portion of its surface normal component (when the ceramic toilet is installed on the wall) faces the rear wall, typically the rear half of the portion closest to the wall.

[0019] Installing the cover-shaped trim on the rear half of the outer wall, i.e. the area facing the rear wall, is advantageous for the appearance of the ceramic toilet, especially when there is a visible transition between the cover-shaped trim and the outer wall of the ceramic toilet.

[0020] According to the preferred design, the rear wall forming section, the two side wall forming sections, and the groove forming section are made of gypsum. Due to the porosity of gypsum, it absorbs moisture from the filling slurry, thereby forming a blank at the interface of the casting mold, and thus enabling the ceramic toilet to reach the minimum strength required for subsequent processing steps.

[0021] Alternatively, the rear wall forming section, the two side wall forming sections, and the groove forming section (i.e., components of the preferred four-piece casting mold) can be made of a porous plastic material. Here, a porous plastic material is provided so that water contained in the slurry can escape from the casting cavity while retaining the non-aqueous components of the slurry. Preferably, after the green body formation time is over and the (residual) filler slurry not needed for green body formation is discharged, compressed air is applied to the casting cavity to allow the water-based components of the slurry to escape through the porous layer structure of the casting mold portion, thereby further solidifying the formed green body.

[0022] The present invention also relates to a ceramic toilet seat obtained by a manufacturing method according to one of the foregoing aspects, wherein the ceramic toilet seat comprises: -Outer wall, inner wall, and at least one edge region connecting the outer wall and the inner wall on the upper side; - A water inlet channel for flushing water, at least partially having an undercut structure, the water inlet channel having an inlet port and an outlet port, wherein the inlet port is formed on the outer wall of the ceramic toilet in the mounting area on the rear wall side of the ceramic toilet, and the outlet port is formed on the inner wall of the ceramic toilet; and - For wastewater discharge channels, The outer wall of the water inlet channel is at least partially formed by a cover-like decorative element, which is connected in a matching manner to the outer wall material of the ceramic toilet.

[0023] For example, a visually uniform overall impression can be achieved through the material fit between the cover-like trim and the outer wall of the ceramic toilet. Furthermore, the material fit between the trim and the toilet body also offers improved performance in terms of hydrodynamics, for example, at the transition between the trim and the (possibly) inner surface of the water inlet channel.

[0024] According to the preferred design, the lid-shaped decorative element is seamlessly embedded in the outer wall of the ceramic toilet seat. Here, the term "seamless" means that the transition between the outer wall of the ceramic toilet seat and the lid-shaped decorative element (when viewed from the outside) is indistinguishable to the human eye at a certain distance (e.g., 1 m). Preferably, the transition between the outer wall of the ceramic toilet seat and the lid-shaped decorative element is flush with the surface, i.e., there is no misalignment (Versatz) in the width direction of the ceramic toilet seat. Alternatively, the lid-shaped decorative element may also be fitted onto the outer wall, but this is not preferred.

[0025] According to the preferred design, in the top view of the ceramic toilet, the cover-shaped decorative element is laterally recessed relative to the outer perimeter of the ceramic toilet. In other words, when viewing the ceramic toilet from above, the cover-shaped decorative element is obscured by the edge area, i.e., the cover-shaped decorative element is recessed behind the edge area in the width direction.

[0026] According to the preferred design, the cover-shaped decorative element is convexly curved, and preferably, the outer surface of the ceramic toilet seat is also convexly curved in the area of ​​the cover-shaped decorative element. Preferably, the cover-shaped decorative element is arranged on the side of the ceramic toilet seat facing the rear wall. In short, the cover-shaped decorative element is thus arranged in the rear area of ​​the ceramic toilet seat, which is almost invisible, preferably completely invisible, when viewed from the front (when the ceramic toilet seat is mounted on the wall). This allows for the transition that may exist between the cover-shaped decorative element and the outer wall surface of the ceramic toilet seat, especially when the outer surface is convexly curved, to be positioned outside the user's field of vision.

[0027] According to the preferred design, the lid-shaped decorative element is made of the ceramic material used in ceramic toilet seats. By using the same material for both the ceramic toilet seat and the lid-shaped decorative element, uneven shrinkage during subsequent processing steps can be avoided, and a visually uniform overall impression can be achieved. Furthermore, the use of ceramic materials is also advantageous in terms of acoustic properties, as ceramic decorative elements offer better damping performance for potential flow noise compared to decorative elements made of plastic.

[0028] According to the preferred design, the outlet of the inlet channel converges into a cavity formed in the inner wall of the ceramic toilet bowl, allowing flushing water entering the internal space through the outlet to be guided tangentially along the inner wall to the outlet channel. This tangential introduction of flushing water helps improve the overall flushing effect, as the water flows in a spiral pattern along the inner wall surface of the ceramic toilet bowl, thus achieving uniform cleaning of the inner wall surface. Furthermore, any flushing debris that may be present can be reliably captured by the water flow and directed into the outlet channel.

[0029] Generally, within the scope of this disclosure, terms such as “above,” “side” (and their corresponding directional expressions) should be understood with reference to the state of the ceramic toilet when it is installed on the wall. In the context, “front” refers to the end of the ceramic toilet facing away from the wall, while “rear” refers to the area of ​​the ceramic toilet closest to the wall. Terms such as “left” and “right” refer to the direction viewed from the front of the ceramic toilet, i.e., the direction observed from the rear wall.

[0030] Terms such as "side wall surface," "edge area," or "inner wall surface" should also be understood based on the installation state of the ceramic toilet. For example, the upper edge area of ​​the ceramic toilet forms the support surface for the toilet seat assembly (WC-Sitzgarnitur) with a lid, the outer surface forms the side area that is visible from the outside even when the lid is closed, and the inner surface forms the receiving space for the flushing fluid, which is normally (when not in use) closed by the lid. Attached Figure Description

[0031] In the following description, the present invention will be described in more detail with reference to embodiments, wherein the various features may also be combined in other ways within the scope of the parallel claims to constitute the key content of the present invention, and no detailed distinction will still be made between different claim categories.

[0032] The attached diagram shows: Figure 1 A cross-section of the casting mold 6 is shown after the billet formation time has ended; Figure 2 A side view of the casting mold 6 is shown (viewed from the right). Figure 3 A cross-sectional view of the casting mold 6 and the ceramic toilet 1 is shown; Figures 4a to 4c A top view of ceramic toilet 1 is shown; Figures 5a to 5c Showing a side view of the ceramic toilet 1 viewed from a rearward angle; and Figure 6 An example process is shown for a method of manufacturing a ceramic toilet seat 1. Detailed Implementation

[0033] Figure 1A cross-sectional view of the casting mold 6 (viewed from above of the ceramic toilet 6) is shown. In the example shown, the casting mold 6 is a four-piece mold and includes a rear wall forming part 6.3, two side wall forming parts 6.1 and 6.2, and a groove forming part 6.4. In the example shown, the casting mold 6 is made of clay.

[0034] The casting mold 6 forms a casting cavity, which is filled with a filler slurry. So-called "body forming," or hardening of the filler slurry, occurs at the contact surface between the clay and the filler slurry in the casting mold 6. After the body forming time is complete, the casting mold 6 is opened, and at least a handfested ceramic toilet seat 1 is removed (see below for details). For simplified demonstration, the ceramic toilet seat 1 is shown in… Figure 1 The ceramic toilet 1 is shown as a solid body (see the shaded area between the outer wall surface 2 and the inner wall surface 3 of the ceramic toilet 1). However, preferably, after the body formation time is completed, the remaining filling slurry is drained, thereby forming a cavity between the outer wall surface 2 and the inner wall surface 3. Preferably, the ceramic toilet 1 is hollow inside, but for the sake of simplifying the cross-sectional view, it is shown as a solid body (see the shaded area between the outer wall surface 2 and the inner wall surface 3 of the ceramic toilet 1). Figure 1 It was not shown in the document.

[0035] exist Figure 1 In the state shown, the blank forming time has ended, meaning that the ceramic toilet 1 is at least hardened in the example shown. For better visibility, the upper groove forming part 6.4 for forming the inner wall surface 3 of the ceramic toilet 1 is not shown. However, in the cross-sectional view shown (a top view of the ceramic toilet 1 from above), other parts of the casting mold 6 can be seen, namely the two side wall forming parts 6.1 and 6.2 and the rear wall forming part 6.3.

[0036] The rear wall forming portion 6.3 is configured to form a connecting surface on the rear side of the ceramic toilet 1, such as the water inlet 4.1 for the water inlet channel 4 and the water outlet 5 (not shown). The side wall forming portions 6.1 and 6.2 are configured to form the outer wall surface 2 of the right side (first side wall forming portion 6.1) or left side (second side wall forming portion 6.2) of the ceramic toilet 1.

[0037] exist Figure 1 The main demolding directions of the sidewall forming parts 6.1, 6.2 and the rear wall forming part 6.3 are illustrated by arrows. In the example shown, these main demolding directions are located on a plane; for example, the forming parts 6.1, 6.2 and 6.3 are disposed on a common base surface, and they move away from each other on that base surface when the casting mold 6 is opened.

[0038] exist Figure 1As can be seen, the water inlet channel 4 of the ceramic toilet has at least a partially undercut structure, particularly relative to the main demolding direction of the first sidewall forming portion 6.1 of the casting mold 6. To create this undercut sub-region of the water inlet channel 4, the molded body 7 (see...) is formed before closing the casting mold 6. Figure 4a The molded body 7 is placed inside the first sidewall forming section 6.1, such that after the casting cavity is filled with filling slurry (see step d in the method description below) and after the blank forming time is completed (see step f), a water inlet channel 4 with at least a partially undercut structure is formed. After the molded body 7 is removed (step g), an outer wall opening is left in the outer wall surface 2, covered with a cap-like decorative piece 4.2 (see step f). Figure 2 Seal the opening in the outer wall.

[0039] Figure 2 A side view of the casting mold 6 (viewed from the right) is shown, in which the first sidewall forming part 6.1 is not shown for better understanding. In the side view shown, the ceramic toilet 1 can be seen, in which the outer wall opening formed by the molding body 7 is closed by the cover-like decorative part 6.2.

[0040] Specifically, the cap-shaped decorative piece 6.2 has been inserted into the outer wall opening (step h) and is connected to the outer wall surface 2 in a material-fitting manner by means of decorative paste (step i).

[0041] Figure 3 An exemplary cross-section of a ceramic toilet seat 1, parallel to its wall mounting surface, is shown. Exemplarily, in... Figure 3 The main demolding direction of the two sidewall forming parts 6.1 and 6.2 and the groove forming part 6.4 can be seen again.

[0042] Figures 4a to 4c A top view of ceramic toilet 1 is shown again (with) Figure 1 (Similar). For example, several placed molded bodies 7.1 to 7.4 are shown here.

[0043] Figure 4a The state of the casting mold 6 during step d) is shown (see also step P6 in the method embodiment below). The two sidewall forming portions 6.1 and 6.2 and the rear wall forming portion 6.3 can also be seen. Furthermore, in Figure 4aThe diagram shows multiple molded bodies 7.1 to 7.4 (often also referred to as "wedges") that form the water inlet channel 4 of the ceramic toilet 1 and a sub-region of the inner wall surface 3 of the ceramic toilet 1. In the example shown, the first molded body 7.1 is placed within the first sidewall forming portion 6.1 of the casting mold, such that after the casting cavity is filled with filling slurry (see step d or P4, see the method description below) and after the blank forming time is completed (see step f or P6), the water inlet channel 4, at least partially having an undercut structure, is formed. The second molded body 7.2 and the third molded body 7.3 are connected to the first molded body 6.1 and are configured to form a tangential transition between the outlet 4.3 of the water inlet channel 4 and the inner wall surface 3 of the ceramic toilet 1. The fourth molded body 7.4 is disposed in the rear wall forming portion 6.3 of the casting mold 6 for forming a water inlet 4.1 for flushing water in the water inlet channel 4.

[0044] Figure 4b An exploded view (also a sectional view from above) of the casting mold 6 is shown. Figure 4b The sidewall forming parts 6.1 and 6.2 and the rear wall forming part 6.3 are shown again. The formed bodies 7.1 to 7.4 can also be seen again.

[0045] Figure 4c An exemplary cross-section of the ceramic toilet 1 is shown (also a top-down cross-sectional view), in which the cover-shaped decorative piece 4.2 has been inserted into the opening in the outer wall of the ceramic toilet 1 (step h) or P10) and the casting mold 6 has been opened (see step P12). Here, the fully formed water inlet channel 4 can be seen again.

[0046] Figures 5a to 5c An exemplary side view of a ceramic toilet seat 1 is shown (viewed from a rearward angle; the casting mold 6 is not shown in any of the figures), where the illustrations correspond to the following: before the insertion of the cover-shaped decorative element 4.2 (see...). Figure 5a ); after inserting the cap-shaped decorative piece 4.2 (see Figure 5b ); and after the cap-shaped decorative piece 4.2 has been connected to the outer wall surface 2 of the ceramic toilet 1 in a material-matching manner (see Figure 5c ). For example in Figure 5c As can be seen, after the cover-shaped decorative piece 4.2 is connected to the outer wall surface 2 material, it is visually indistinguishable from the outer wall surface 2 of the ceramic toilet 1.

[0047] Figure 6 The following are exemplary steps of a method for manufacturing a ceramic toilet seat 1, in the following order: P1) Provides a multi-part casting mold 6, wherein the casting mold 6 includes at least a rear wall forming part 6.3, two side wall forming parts 6.1 and 6.2, and a tank forming part 6.4; P2) The molded body 7 is placed in the first sidewall forming part 6.1 of the two sidewall forming parts, such that the water inlet channel 4 formed by the molded body 7 for rinsing water has at least a partial undercut structure relative to the main demolding direction of the first sidewall forming part 6.1; P3) Close the casting mold 6; P4) Fill the casting cavity formed by the multi-piece casting mold 6 with filling slurry; P5) Allow the filling slurry to remain in the closed casting mold 6 for the green body formation time; P6) The filler slurry that is still in a liquid state after the billet formation time is over will be discharged; P7) After the billet formation time is completed, open the first side wall forming part 6.1 of the casting mold 6; P8) Remove the groove forming part 6.4 of the casting mold 6; P9) The molded body 7 is removed from the water inlet channel 4, which has at least a partial undercut structure relative to the main demolding direction of the first sidewall forming part 6.1; P10) Insert the cap-shaped decorative piece 4.2 into the outer wall opening of the ceramic toilet 1 after the molded body 7 is removed from the water inlet channel 4; P11) A material fit connection is formed between the cover-shaped decorative part and the outer wall surface 2 of the ceramic toilet 1 by means of decorative paste; P12) Open the casting mold 6; and P13) Take out the ceramic toilet seat 1.

[0048] List of reference numerals 1 Ceramic toilet 2. Outer wall surface of ceramic toilet 1 3. Inner wall surface of ceramic toilet 1 4. Water inlet channel of ceramic toilet 1 4.1 Water inlet interface of water inlet channel 4 4.2 Cover-shaped decorative piece for water inlet channel 4 4.3 Water outlet of water inlet channel 4 5. Water outlet channel of ceramic toilet 1 6 casting molds 6.1 The first sidewall forming part of the casting mold 6 6.2 The second sidewall forming part of the casting mold 6 6.3 Forming part of the rear wall of casting mold 6 6.4 The groove forming part of the casting mold 6 7 formed body 7.1 First Formed Body 7.2 Second Shaped Body 7.3 Third Forming Body 7.4 Fourth Shaped Body.

Claims

1. A method for manufacturing a ceramic toilet seat (1), the ceramic toilet seat having a water inlet channel (4) adjacent to the outer wall surface (2) of the ceramic toilet seat (1) for flushing water, wherein the manufacturing method comprises, in the following order: d) Fill the casting cavity formed by the multi-piece casting mold (6) with filling slurry; f) After the blank formation time is over, open the first sidewall forming part (6.1) of the multi-piece casting mold (6). g) Remove the molded body (7) from the water inlet channel (4), which has at least a partial undercut structure relative to the main demolding direction of the first sidewall forming part (6.1). h) Insert the cap-shaped decorative piece (4.2) into the outer wall opening of the ceramic toilet (1) after the molded body (7) is removed from the water inlet channel (4); as well as i) The cap-shaped decorative element is connected to the outer wall surface (2) of the ceramic toilet (1) by means of decorative paste.

2. The manufacturing method according to claim 1, wherein the manufacturing method further comprises, prior to step d), the following in sequence: a) Provide the multi-piece casting mold (6), wherein the casting mold (6) includes at least a rear wall forming part (6.3), two side wall forming parts (6.1, 6.2) and a groove forming part (6.4). b) The molded body (7) is placed into the first sidewall forming part (6.1) of the two sidewall forming parts, such that the water inlet channel (4) formed by the molded body (7) for rinsing water has at least a partial undercut structure relative to the main demolding direction of the first sidewall forming part (6.1); and c) Close the casting mold (6).

3. The manufacturing method according to claim 1 or 2, wherein the manufacturing method further comprises the following step between step d) and step f): e) The filling slurry is held in the closed casting mold (6) until the resulting blank reaches an average wall thickness of at least 8 mm.

4. The manufacturing method according to claim 3, wherein after step e) and before step f), the groove forming portion of the inner wall surface (3) of the ceramic toilet (1) formed thereon is first removed.

5. The manufacturing method according to any one of claims 1 to 4, wherein the outer wall of the water inlet channel (4) is at least partially formed by the cover-shaped decorative element (4.2), which is connected in step i) to the material of the outer wall surface (2) of the ceramic toilet (1).

6. The manufacturing method according to any one of claims 1 to 5, wherein the cover-shaped decorative element (4.2) is convexly curved and is arranged on the convexly curved outer surface of the ceramic toilet (1) in step h).

7. The manufacturing method according to any one of claims 1 to 6, wherein the cover-shaped decorative element (4.2) is arranged on the side of the ceramic toilet (1) facing the rear wall in step h).

8. The manufacturing method according to any one of claims 1 to 7, wherein the rear wall forming part (6.3), the two side wall forming parts (6.1, 6.2) and the groove forming part (6.4) are made of porous plastic material.

9. A ceramic toilet seat (1) obtained by a manufacturing method according to any one of the preceding claims, wherein the ceramic toilet seat (1) comprises: -Outer wall surface (2), inner wall surface (3), and at least one edge region connecting the outer wall surface (2) and the inner wall surface (3) on the upper side; - A water inlet channel (4) for flushing water, at least partially having an undercut structure, the water inlet channel having an inlet port (4.1) and an outlet port (4.3), wherein the inlet port (4.1) is formed on the outer wall surface (2) of the ceramic toilet (1) in the mounting area on the rear wall side of the ceramic toilet (1), and the outlet port (4.3) is formed on the inner wall surface (3) of the ceramic toilet (1); and - For wastewater discharge channels (5). The outer wall of the water inlet channel (4) is at least partially formed by a cover-shaped decorative element (4.2), which is connected to the outer wall surface (2) of the ceramic toilet (1) in a matching manner.

10. The ceramic toilet (1) according to claim 9, wherein the cover-shaped decorative element (4.2) is seamlessly embedded in the outer wall surface (2).

11. The ceramic toilet (1) according to claim 9 or 10, wherein in a top view of the ceramic toilet (1), the cover-shaped decorative element (4.2) is laterally retracted relative to the outer perimeter of the ceramic toilet (1).

12. The ceramic toilet (1) according to any one of claims 9 to 11, wherein the cover-shaped decorative element (4.2) is convexly curved, and wherein the outer surface of the ceramic toilet (1) is convexly curved in the region of the cover-shaped decorative element (4.2).

13. The ceramic toilet (1) according to any one of claims 9 to 12, wherein the cover-shaped decorative element (4.2) is arranged on the side of the ceramic toilet (1) facing the rear wall.

14. The ceramic toilet (1) according to any one of claims 9 to 13, wherein the cover-shaped decorative element (4.2) is made of the ceramic material of the ceramic toilet (1).

15. The ceramic toilet (1) according to any one of claims 9 to 14, wherein the outlet of the inlet channel (4) flows into a cavity formed in the inner wall surface (3) of the ceramic toilet (1), such that flushing water entering the interior space through the outlet (4.3) is guided tangentially on the inner wall surface (3) to the outlet channel (5).

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