CN113133710A

CN113133710A - Mounting device for releasably mounting a fitting on a toilet body

Info

Publication number: CN113133710A
Application number: CN202110077879.XA
Authority: CN
Inventors: F·I·普赖西格; N·芒达尼; A·迪特黑尔姆; A·黑尔布林
Original assignee: Geberit International AG
Current assignee: Geberit International AG
Priority date: 2020-01-20
Filing date: 2021-01-20
Publication date: 2021-07-20
Also published as: AU2021200342B2; PL3851004T3; AU2021200342A1; EP3851004A1; AU2022204626A1; AU2022204626B2; DK3851004T3; CH716756B1; EP3851004B1

Abstract

The invention relates to a mounting device for fittings of a toilet (WC), wherein the removability of an otherwise existing snap-in manner can be ruled out by a locking element in the mounted state.

Description

Mounting device for releasably mounting a fitting on a toilet body

Technical Field

The present invention relates to a mounting device for releasably mounting a fitting on a toilet (WC) body.

Background

WC (toilet) has a WC body, usually consisting of ceramic and having a WC bowl. WC raceways and cover plates are mostly also provided. The WC seat ring is intended for a user to sit on and can be regularly flipped over about a transverse axis in the rear region of the WC. The same applies to the usually provided WC covers for closing the WC bowl, which are usually also covered together with the seat ring.

The parts relating to the WC seat ring and the WC cover will be referred to below generically as "fittings", wherein this in addition to the WC seat ring and the WC cover itself also includes the case of their combination, i.e. the combination of the complete WC decoration. In the latter case, the race or cover plate may be an item mounted on the WC body or both may also be mounted together via the specific mounting means herein.

It will be appreciated that WC must be cleaned particularly frequently and thoroughly and that cleaning is an important aspect in terms of performance. It is therefore known in principle to provide a fastening mechanism by means of which these components can be detached from the WC body separately or together in a simple manner. By "simply" it is meant that loosening the screw connection that installs the retaining pin through the vertical hole in the WC body is too cumbersome for regular cleaning and sanitization personnel, thus eliminating disassembly.

In particular, solutions are known in which the fitting can be slipped over in a snap-fit manner and can thus be mounted on a fastening pin, which is itself mounted on the WC body. These fittings can be pulled out upward again when the locking is overcome, i.e. with a certain expenditure of force. Reference is often made to "quick release" fittings for this purpose.

Furthermore, there are various solutions in the prior art, in which the operating element is actuated by the cleaning person in order to release the fastening and to remove the fitting from the fastening element on the WC body side. Reference may be made, for example, to the prior application EP 18153798 of the same applicant and to the prior art cited therein.

According to a special embodiment of WO 2015/166111a1 or, for example, WO2016/071487 a1 modified, a locking mechanism that can be released by lateral key pressure is proposed, wherein the locking is brought about by a torsion bar spring and its engagement in a groove on a fastening pin on the WC body side. The corresponding engagement or form-fitting connection must be released by pressing a button so that the WC fitting can be lifted. After being lowered again, the WC fitting is locked to establish engagement again, and cannot be released again without pressing the button.

Disclosure of Invention

It is an object of the present invention to provide a mounting device that improves the releasability of the fitting of the WC body for cleaning purposes.

To this end, the invention relates to a mounting device for mounting an accessory on a WC body, the mounting device having two fixing elements complementary to one another, of which a first fixing element is to be mounted on the WC body and a second fixing element is to be mounted on the accessory, wherein one of the fixing elements, preferably the second fixing element, has a form-fitting element for establishing and releasing a form-fitting connection with the other fixing element, which fixes the accessory on the WC body by coupling the two fixing elements, wherein the form-fitting element is movable by spring-loaded force between a form-fitting position corresponding to the form-fitting connection and a release position releasing the form-fitting connection, wherein a locking element is provided which comprises a fixing element of the form-fitting element, which locking element is movable between a locking position and a release position and locks the form-fitting element in the form-fitting position in the locking position, wherein the form-fitting elements remain in the form-fitting position due to the elastic force when the locking element is in the release position, wherein the other fixing elements can be released from the coupling with the fixing element having the form-fitting elements by the force loading of the fixing elements relative to one another when the form-fitting elements are released from the form-fitting connection between the form-fitting elements by moving the form-fitting elements out of the form-fitting position against the elastic force when the locking element is in the release position. The invention also relates to an advantageous use of such a mounting device and to a fitting equipped with such a mounting device.

According to the invention, it is proposed that the fitting is fastened to the WC body by means of a positive connection between two fastening elements, one of which is to be attached or mounted to the WC body and the other to be attached or mounted to the fitting. One of the fastening elements, preferably the fastening element which is arranged on the fitting and is referred to herein as the "second fastening element", has a form-fitting element for this purpose. The form-fitting element is loaded by the spring force, i.e. undergoes a spring return, against which the form-fitting element can be moved from the form-fitting position into the release position. I.e. the form-fitting element is pretensioned.

In contrast to the prior art in the two WO documents cited above, according to the invention a locking element is also provided which locks the form-fitting element in its form-fitting position, to be precise in its form-fitting position when the locking element is in its locking position. The locking element itself can be moved from the locking position into the release position. However, this does not cause the positive-locking element to be automatically moved out of the positive-locking position. But the form-fitting element is held in the form-fitting position by the elastic force.

However, according to the invention, the fastening by means of the form-fitting connection is releasable, i.e. the two fastening elements or the fitting and the mounting device and the WC body are subjected to a force load relative to one another in the mounted state. In particular, the form-fitting connection can be pulled on at the fitting, for example, and thereby released, whereby the form-fitting element is moved into its release position against the spring force. This can be brought about, for example, by suitable shaping of the fastening element (without the form-fitting element) and/or of the parts of the form-fitting element that are important for the form-fitting connection, for example by an inclined portion.

In this way, two functional states can be distinguished by the locking element, namely a non-releasable mounting state (locking position) (without movement of the locking element) and a fixing state (release position of the locking element and movement of the form-fitting element between its two positions) which can be released in a snap-off manner and mounted again in a snap-on manner. However, in the prior art, in particular in the two WO documents cited, the fastening elements can only be released from one another by positive unlocking, for example by pressing a button, wherein the button pressing removes the positive connection and thus no longer engages. Without a key press, i.e. for example simply by pulling up the fitting (or pulling one of the fixing elements relative to the other) the fixing cannot be released.

On the other hand, in the prior art, as already mentioned at the outset for the keyword "quick release", there are solutions in which only a snap-in or snap-on fastening is disclosed, to be precise no locking solution.

The option according to the invention can be used, for example, for parents with children who wish to prevent them from loosening at least for a certain age, but who later wish to return to the "usual" quick release function according to his judgment. The same advantages are achieved by one and the same product design that can serve both customers requiring such locking and customers without such requirement.

In particular, the installer can decide when mounting the fitting or the entire fitting on the WC body, which leaves the locking element in that position. For example, for a WC in the private area, the locking element can be arranged in the release position, so that the mounted fitting has a quick release function. On the other hand, it is desirable, for example in public WCs in railway stations or parks, to make it difficult to break or theft, whereby the locking element remains in the locked position and whereby the fitting can only be removed after the movement of the locking element. In this context, the operating scheme of the locking element can be designed such that it is difficult to access and/or that only the person concerned can understand the functional relationship and/or that it can be operated only by means of a tool. As will also be described in detail below.

According to a preferred embodiment, the form-fitting element itself is an elastic spring element and thus itself generates an elastic restoring force. The spring element is in particular a torsion bar spring, preferably a torsion bar spring having an arcuate shape (in this embodiment an angular U-shape), which has a section for a positive connection. In the installed state, this section is preferably horizontal and engages in a form-fitting position into a lateral cutout of another fastening element, for example a fastening pin, which is mounted on the WC body and points forward, thereby establishing a form-fitting connection. The section can be moved from the positive-locking position into a release position outside the undercut by a preferably horizontal movement. As already mentioned, a movement with the disengagement can be effected by applying a force (in the installed state) between the two fastening elements or between the fitting and the WC body, for example by tilting the sides of the profile of the undercut and/or by a suitable shape of the cross-sectional profile of the torsion bar spring, for example a circular shape.

The locking element can be designed as a rotationally movable component, wherein the locking position and the release position correspond to different rotational positions. In particular, the radial shoulder of the locking element locks a part of the form-fitting element in the form-fitting position and is released by turning aside (toward the release position), wherein a radial retraction in the vicinity of the shoulder is brought about. For example, the shoulder and the retraction portion may prevent or release a section of the torsion bar spring from moving.

In particular, the section of the torsion bar spring that is important for the interaction with the locking element can be, for example, a (preferably distal) region of one of the side arms of the U-shape.

The rotational operation of the locking element can be performed by manipulating the axial end (about the axis of rotation), for example by providing a suitable handle or the like at this point.

Particularly preferred is a suitable design of the axial end (or locking element in general) which is operated solely by means of a tool. For example, a receptacle for a tool head, for example a receptacle for the end of a wrench having a form-fitting contour, for example a hexagonal contour, can be provided. Naturally, receptacles for cross, ring or other screw wrenches and the like are also conceivable.

In many cases, the WC body-side fixing element is fixed to the WC body by interaction between a tool and a part of the fixing element via the WC body. In particular, for example, a part of a fastening pin can also have a receptacle for tool access, for example a hexagonal receptacle. The advantageous embodiment of the invention provides a tool holder design similar to this, so that the installer can work with tools that are generally available, for example tools having the same hexagonal wrench size. The installer can thus easily and without significant additional expenditure place the locking element into the desired position during installation.

Preferably, the axis of rotation of the locking element is horizontal in the installed state and particularly preferably perpendicular to the pivot axis of the fitting, which is usually mounted on the WC body in a pivotable manner, i.e. can be tilted up and down. This position of the locking element makes the construction of the mounting device particularly compact, wherein the locking element can be arranged very close to the form-fitting connection between the form-fitting element and the (further) fixing element.

This approach is preferred in principle not only because of the small dimensions of the construction but also for limiting the lever arms that occur. In other words, the advantageous close arrangement of the locking elements is robust. In particular, in the case of a rotatable locking element, the minimum spacing between the axis of rotation of the locking element and the positive-locking connection, preferably the engagement of the torsion bar spring in the lateral cut, does not exceed 20mm, wherein the following values are also preferred as further upper limits: 19. 18, 17, 16, 15, 14, 13 mm.

The blocking or preventing of access or operation of the locking element by unauthorized persons has already been mentioned above. For this purpose, it is advantageously arranged below the cover of the mounting device. In this case, the presence of the locking element is not visible at all from the outside and the locking element cannot be operated. The cover must first be removed or at least moved in order to move the locking element, in particular into the release position. Particularly preferably, the cover can snap into its final position after it is mounted on the mounting device (relative to the mounting device, not necessarily after it is mounted on the WC body). The cover portion is then difficult to remove. For example, the cover can engage with another fastening element, for example a fastening bolt (on the WC body), to be precise relatively "tightly".

The cover is preferably designed as a housing which covers the fastening element (with the form-fitting element) as far as possible. The fastening element is here a "second" fastening element, i.e. a fastening element on the fitting side, the housing preferably covering a substantial part of the outer surface of the second fastening element. The outer surface is understood here to mean the outer surface which is not covered by other elements, in particular by one or more fittings. For clarity, reference is made to the examples.

The locking element is preferably a permanent component of the mounting device, i.e. it is not removed from the mounting device and used again for locking when it is moved, but rather only moved in or on the mounting device. The same preferably applies to the form-fitting element, to be precise independently of the locking element. Whereby these components are not lost.

Drawings

The invention is described in detail below on the basis of embodiments, wherein other combinations of individual features within the scope of the independent claims can also be significant for the invention, and no specific distinction is made between different claim categories.

The figures show in detail:

figure 1 shows a cross-sectional view of a mounting device according to the invention and a part of a WC lid, a part of a WC race and a part of a WC body in a longitudinal sectional plane;

FIG. 2 shows a perspective view of the elements of FIG. 1 with the elements in a disassembled state;

FIG. 3 shows a schematic view similar to FIG. 2, but involving the other side of the WC;

FIG. 4 shows a front view of the mounting device of FIG. 3;

FIG. 5 shows a top view thereof;

fig. 6 shows a side vertical section through the fixing pin, the form-fitting element and the locking element according to fig. 4 and 5;

FIG. 7 shows a top view of the element of FIG. 6;

fig. 8 shows a perspective view of the elements of fig. 6 and 7 in a first functional position of the form-fitting element and the locking element;

FIG. 9 shows a schematic view similar to FIG. 8, but in another position;

fig. 10 shows a sectional view corresponding to the position in fig. 8 with a sectional plane corresponding to fig. 1;

FIG. 11 shows a schematic view similar to FIG. 10, but in the position of FIG. 9;

FIG. 12 shows a top view corresponding to FIG. 5, but with an additional mounted housing;

FIG. 13 shows a perspective view of FIG. 12;

fig. 14 shows a perspective view from obliquely below in fig. 12;

fig. 15, 16 and 17 show views similar to fig. 12, 13 and 14, but with the shells partially pushed apart.

Detailed Description

Fig. 1 shows the mounting device, by means of which the WC lid 2 and the WC disk 3 are held on the WC body 4 in a reversible manner. The illustration is a vertical cut, wherein the cut plane is centrally through the turning axis (shown in horizontal dashed lines) and centrally through the fixing pin 5 of the mounting device.

The mounting device, to be precise its horizontal, substantially cylindrical main body 1, is held on the WC body 4 by means of a fixing pin 5 which is configured in a conventional manner, namely by means of a thread visible on the lower end of the fixing pin 5 and a nut screwed thereon, but not shown. The metallic fastening pin 5 is held on the ceramic of the WC body 4 by a washer, indicated with 6, wherein the washer 6 covers the mounting hole of the WC body 4 and ensures fastening and avoids damage to the ceramic by a certain inherent elasticity. The fixing pin 5 is also clearly visible in fig. 2, 3 (for the other side), 6, 8 and 9. Whereby the body 1 and the fixing pin 5 form the two fixing elements described earlier.

The fixing pin 5 has a groove 7, i.e. a double undercut, running horizontally in its upper section in the circumferential direction, wherein the upper undercut, i.e. the upper part of the cross-sectional contour, is inclined relative to the vertical longitudinal axis of the fixing pin 5, in this case by about 45 °. The fixing pin 5 also has a hexagonal engagement piece 8 for a 5mm allen key on its upper end face, by means of which the fixing pin 5 can be screwed to the nut.

The fixing pin 5 engages from below into a receiving hole of the horizontal body 1 of the mounting device in fig. 1, see also fig. 14 and 17, where it is also fixed in the hole in a manner described in more detail. The receiving bore has an opening upwards, see also fig. 5 and 15, through which a socket head wrench can be inserted into the receiving portion 8. I.e. also after the introduction of the fixing pin 5 into the receiving bore.

The horizontal body 1 of the mounting device holds two fittings, namely a WC cover 2 and a WC seat 3, in a known manner, wherein fig. 2 and 3 clearly show that on the side facing away from the retaining pin 5 (left side in fig. 1) a conventional rotation damper 9 is provided (reference numerals on the left and right sides will not be distinguished in the following, since these parts are substantially identical). The distal end of the rotary damper 9 engages in a receiving sleeve 10, which receiving sleeve 10 is arranged in a corresponding opening of the WC cover 2, specifically one sleeve 10 on the left and one sleeve 10 on the right. The two

fittings

2 and 3 are thus pivotable relative to the WC body 4 in the installed state as a whole, wherein one of the two rotary dampers 9 dampens the tilting movement of the WC lid 2 and the other rotary damper 9 dampens the tilting movement of the WC disk 3. This is not described in detail since this embodiment is common in this respect.

The invention relates in particular to the fixing of the body 1 on the fixing pin 5. For this purpose, the body 1 comprises a torsion bar spring (Stabfeder)11 mounted horizontally therein, the torsion bar spring 11 being visible in particular in fig. 5 to 9, to be precise in fig. 6 to 9, the surrounding elements of the body 1 not being shown for greater clarity. The torsion bar spring 11 has an approximately angular U-shaped contour and can be inserted into its functional position starting from the right according to fig. 1 and starting from the left according to fig. 5. In this functional position, the two side arms of the torsion bar spring 11 engage in the notches 7 on opposite sides, wherein the circular cross-sectional contour of the torsion bar spring 11 can be completely accommodated in the notches 7, for example, according to fig. 7. This is a form-fitting connection which has been described many times in the preceding description, so that the torsion bar spring 11 forms a form-fitting element.

In this respect, the two side arms of the torsion bar spring 11 can be slightly pressed apart from one another in their functional position, by pulling (one of) the body 1 or the

fittings

2 and 3 upwards in the direction of the longitudinal axis of the securing pin 5, the latter being bent apart from one another and the positive connection being cancelled by the interaction between the inclined section of the cross-sectional contour of the notch 7 and the inclined section of the torsion bar spring 11. Whereby the assembly of fittings 2 and 3 (jointly in this embodiment) is pulled out upwards, out of engagement with the fixing pin 5. Conversely, the

fittings

2 and 3 may be sleeved from above in a snap-fit manner to the fixing pin 5 and then fixed. This achieves a so-called quick release function.

According to the invention, the body 1 also has a locking element 12, which according to fig. 6 to 9 has a roller-like shape, wherein the axis of the locking element 12, which is also rotatable about this axis, is horizontal and perpendicular to the tilting axis of the

fittings

2 and 3 shown in fig. 1 (and thus vertically as in fig. 7). The rotatability is achieved simply by inserting a roller-like shaped locking element 12 in a matching horizontal opening of the body 1, see for example fig. 1, 4, 10, 11 and in particular fig. 17. The last figures in particular show that the locking element 12 is held in the opening in a form-fitting manner.

The locking element 12 also has a 5mm internal hexagonal receptacle, which is designated by reference numeral 13, on the (obliquely) forwardly directed end side in fig. 3, 4, 6, 8, 9, 16 and 17. The 5mm internal hexagonal reception can be operated by means of an internal hexagonal wrench as described above for the reception 8 of the fixing pin 5. In particular, the locking element 12 can be rotated by approximately 90 ° between the release position according to fig. 7, 8, 10 and the locking position according to fig. 9 and 11. The arrows visible in the different figures here indicate the direction of rotation of the locking position, according to fig. 9 and 11.

The outer surface of the locking element 12 is radially smaller than the end face over a part of the circumference in an area slightly spaced apart from the end face in the axial direction, wherein the corresponding free space of the locking position is narrowed by the two shoulders 14 which can be seen particularly clearly in fig. 9. The distance of the shoulder 14 in the axial direction of the locking element 12 corresponds approximately to the distance between the side arms of the torsion bar spring 11 in the relaxed state, i.e. in the form-fitting connection. These shoulders 14 thus prevent the two side arms from bending away from each other and lock the torsion bar spring 11, i.e. the form-fitting element, in its form-fitting position, see fig. 9. In fig. 11, this is particularly clearly visible in a section perpendicular to the axis of rotation of the locking element 12.

The shoulder 14 is laterally pivoted out of the region of the torsion bar spring side arm after a rotation of about 90 ° (counterclockwise with reference to fig. 6), see fig. 8, and acts in each case outside the two side arms in a free space, which can be referred to as a radial retraction of the outer surface and which brings the respective space of the two arms outward (in the direction of the end face of the locking element 12). This is illustrated in particular in fig. 7 and 8, the section perpendicular to the axis of rotation of the locking element 12 of fig. 10 also corresponding to this.

As can also be seen with reference to fig. 10 and 11, the shaping of the outer surface of the locking element 12 also serves to stop the torsion bar spring side arm in the two illustrated positions. In other words, the radially retracted portion of the outer surface is formed in an approximately angular manner overall, so that the torsion bar spring side arms in the two illustrated positions each stop against a flat surface section, so that the locking element 12 cannot be rotated beyond the illustrated positions. The flat sections merge into one another in the described manner, for example angularly, and open out on their respective other longitudinal side into a cylindrical and radially more outer surface section.

The three-dimensional shape, which is considered here to be a one-piece plastic part (preferably an injection-molded part) in combination with a simple receptacle in the body 1, thus provides a locking function, i.e., a "closing" quick release function.

Fig. 1 to 11 do not show the housing cover 15 shown in fig. 12 to 17. The housing shell 15 serves to cover (according to fig. 1 to 3) the part of the outer surface of the main body 1 that is not covered by the WC disk 3. The housing 15 is also a simple plastic injection-molded part which can be pushed onto the slightly skeletonized body 1 with an exact fit.

Fig. 14 and 17 show clearly that the undercut 16 on the underside of the housing shell 15 has a rounded extension 17 at its end, which extension 17 matches the outer contour of the fastening pin 5 at this point. Since the housing 15 is slightly elastic, the housing 15 can also be pushed almost onto the fixing pin 5 when it has been pushed into the body 1, see fig. 15 to 17, and then, according to fig. 12 to 14, into the final position, in which the housing 15 snaps in. In this case, the housing shell 15 is fixedly arranged in relation to the form-fitting connection with the fastening pin 5, so that the housing shell can only be pulled out again in the axial direction with a high expenditure of force, which is additionally made more difficult by its smooth outer shape. This is practically impossible in normal operation, the seated housing 15 practically preventing the user from accessing in particular the hexagonal engagement 13 of the locking element 12.

In general, a fitting or, in this case, a set of two

fittings

2 and 3 can be mounted on the ceramic WC body 4 in a conventional manner by means of the mounting device according to the invention, wherein a quick release function is provided for the fastening of the body 1 on the fastening pin 5. In this case, essentially in the factory setting, the locking element 12 is first in its release position. The installer can decide after pushing onto the fixing pin 5 whether the quick release function should be retained or whether the WC fitting should be mounted substantially unreleasably, for example due to public places that are open and at risk of theft or vandalism. In the latter case, the locking element 12 is turned 90 ° into the locking position with a socket wrench to which the mounting and fixing pin 5 is always applied, and the housing 15 is then pushed up. It is substantially impossible for a third party to remove the WC accessory again thereafter. This is not possible in particular because of the closed design of the housing 15.

This embodiment is not only particularly simple and effective, but also robust. This also consists in that the axis of rotation of the locking element 12 is arranged relatively close to the positive connection between the torsion bar spring 11 and the engraved groove 7. The corresponding spacing, which is visible in fig. 8 to 11, is in this case less than 13mm, the most stable central part of which is used here for the positive-fit connection, i.e. in fact the vertical longitudinal axis of the fixing pin 5. Furthermore, the components used are not configured in a filigree manner, and the geometry is relatively uncomplicated.

Claims

1. A mounting device for mounting an accessory (2, 3) on a WC body (4), having two fixing elements (1, 5) that are complementary to one another, wherein a first fixing element (5) is to be mounted on the WC body and a second fixing element (1) is to be mounted on the accessory (2, 3), wherein one of the fixing elements (1, 5), preferably the second fixing element (1), has a form-fitting element (11) for establishing and releasing a form-fitting connection with the other fixing element (5, 1) that fixes the accessory (2, 3) on the WC body (4) by coupling the two fixing elements (5, 1), wherein the form-fitting element (11) is movable by a loading spring force between a form-fitting position corresponding to the form-fitting connection and a release position releasing the form-fitting connection, characterized in that a locking element (12) of the fixing element (1) is provided, which locking element (12) comprises the form-fitting element (11), which locking element (12) is movable between a locking position and a release position and in the locking position locks the form-fitting element (11) in the form-fitting position, wherein, when the locking element (12) is in the release position, the form-fitting element (11) remains in the form-fitting position due to an elastic force, wherein, when the locking element (12) is in the release position, the further fixing element (5) can be released from the form-fitting connection between the fixing element (5) and the form-fitting element (11) by a force loading of the fixing elements (1, 5) relative to one another by moving the form-fitting element (11) out of the form-fitting position against the elastic force The coupling of the fastening element (1) of the mating element (11) is released.

2. The mounting device according to claim 1, wherein the form-fitting element (11) is an elastic spring element and itself generates an elastic force.

3. The mounting device according to claim 2, wherein the form-fitting element (11) is a torsion bar spring which in the mounted state engages in a horizontal section into the undercut (7) of the further fixing element (5) in the form-fitting position and can establish a form-fitting connection therewith and is designed for horizontal movement from the form-fitting position into the release position.

4. Mounting device according to one of the preceding claims, wherein the locking element (12) is rotationally movable between the locking position and the release position, wherein a rotational property of a radial shoulder (14) of the locking element (12) with respect to a rotational axis locks a part of the form-fitting element (11) in its form-fitting position, while a circumferentially adjacent radial retraction of the locking element (12) can correspondingly release the form-fitting element (11) after rotation into the release position of the locking element (12).

5. Mounting device according to claim 4, wherein the rotatability of the locking element (12) is operable on an axial end about the axis of rotation.

6. Mounting device according to any one of the preceding claims, wherein the movement of the locking element (12) between the locking position and the release position can only be carried out with the aid of a tool, preferably by introducing a tool head into the receptacle (13), particularly preferably by introducing a wrench having a form-fitting profile, for example a hexagonal profile, into a complementary receptacle of the locking element (12).

7. The mounting device according to claim 6, wherein the second fixing element (1) has the form-fitting element (11) and the locking element (12), the first fixing element (5) being a fixing pin to be mounted on the WC body (4), the fixing pin having a tool receptacle (8) for fixing on the WC body (4) and the tool receptacle (8) corresponding to the tool receptacle (13) of the locking element (12).

8. The mounting device according to claim 4, optionally in combination with at least one of claims 5 to 7, wherein the axis of rotation of the locking element (12) is located on the WC body (4) horizontally in the mounted state and perpendicularly to the axis of oscillation of the fitting (2, 3) with respect to the tilting movement of the fitting (2, 3).

9. The mounting device according to claim 3 or 4, optionally in combination with at least one of claims 5 to 8, wherein the rotational axis of the rotatability of the locking element (12) in the mounted position is at a distance of at most 20mm from the engagement of the torsion bar spring section in the side cut (7).

10. The mounting device according to any one of the preceding claims, wherein the locking element (12) is covered in the mounted state by a cover portion (15) independently of the position of the fitting (2, 3) on the WC body (4), such that the locking element (12) cannot be moved by a user without detaching the cover portion (15), wherein the cover portion (15) preferably engages in the mounted state and in its cover position.

11. The mounting device according to claim 5 or 10, optionally in combination with at least one further claim of the preceding claims, having a housing (15) as a covering section which, in the mounted state, covers a substantial part of the outer surface of the second fixing element (1), as long as the second fixing element (1) is not covered by the fitting (2, 3) or by a further fitting (3, 2) fixed thereto.

12. Mounting device according to any one of the preceding claims, wherein the locking element (12) and the form-fitting element (11) remain mounted in or on the fixing element (1, 5) when they are moved between the respective release position and locking position or form-fitting position.

13. Use of a mounting device according to any of the preceding claims for mounting an accessory (2, 3) on a WC body (4).

14. Use according to claim 13, wherein the mounting device corresponds to the mounting device in claim 10, and wherein, when mounting the fitting (2, 3) on the WC body (4), the installer sets the locking element (12) in the locking position or in the release position and then mounts the cover (15), wherein preferably, when mounting in the private area, the locking element (11) is brought into the release position, so that thereafter the fitting (2, 3) can be detached from the WC body (4) with the snap-in release brought about by the form-fitting element (11) and can be mounted again snap-in on the WC body (4), in particular for cleaning purposes.

15. Fitting with a mounting device according to one of claims 1 to 12, by means of which the fitting (2, 3) can be mounted on a WC body (4), wherein preferably the fitting (2, 3) is present in combination with the WC body (4).