EP1004713B1 - Covering rosette - Google Patents

Abstract

A sanitary wall fitting has a support plate (7) fitted to the wall and with a trim cover (16) fitted to the support plate via ratchet grips. These comprise spring fingers (10) which grip the edge of the trim plate and which activate ratchet grips for a secure fitting. No separate fasteners are required and the fitting an removal of the trim does not require special tools. A number of spring fingers are spaced around the fitting for an improved grip.

Description

The invention relates to a cover rosette for a sanitary concealed fitting with a cover plate, with through holes for screws with which the cover plate and the concealed fitting can be fastened, with a decorative hood, and with a two cooperating components comprehensive locking device, the decorative hood by means of the locking device solvable is attached to the cover plate, and wherein the cover plate and the hood have coaxial through holes for a portion of the concealed fitting.

Cover rosettes of this type are used to protect the concealed fitting against splashing water and at the same time to cover the transition region between the projecting out of the wall region of the flush-mounted fitting and the wall portion adjacent this area visually appealing.

A cover rosette of the type mentioned is from the EP 0 485 842 B1 known. The covering rosette described therein comprises a cover plate which is screwed for attachment to the concealed fitting, as well as a decorative hood. The decorative hood has molded push-button-like pins, with which it engages in openings of the cover plate for releasable attachment by means of the locking device formed by the pins and the openings.

Such cover rosette has the disadvantage that the elastic deformation path between the detent connection incoming decorative hood and the cover plate is very low. This requires a high dimensional accuracy of these components, in particular the position and the dimension of the push-button-like pin, during manufacture, so that the components match during assembly of the cover rosette. Experience has shown that the elasticity of the latching connection, which is subjected to great stress owing to the small elastic deformation path, is used up over time due to plastic deformation, as a result of which the connection can become undesirable.

In addition, a disassembly of such cover rosettes is made more difficult by the fact that the cover rosette provides no defined engagement surface for disassembly of the locking device caused by the locking device after latching of the hood and cover plate. The dismantling of such cover rosette can therefore lead to damage of the decorative hood and / or the locking device and thus to the uselessness of the entire cover rosette.

The problem of disassembly could be bypassed if, as with the DE U 85 06 575 shown, would be dispensed with a wall-side attachment. There, a pipe rosette is described, which has two releasably connected, rotatable about eccentrically arranged axes parts of a decorative hood. As a result, the position of the covered wall surface is variably adjustable relative to the tube. As a result, although the goal visually appealing cover is achieved, but not the splash water protection.

It is therefore an object of the present invention, a device of the type mentioned in such a way that the requirements for dimensional accuracy of the components of the cover rosette are reduced, the elasticity of the locking device is permanently guaranteed and the defined disassembly of the locking device is possible.

This object is achieved by the features of claim 1.

Due to the design of the spring portion with a plurality of elastically yielding spring tongues is achieved that the elastic deformation of the latching device constituent components, within which they ensure a secure latching connection, compared to known locking devices in cover rosettes of the type mentioned is increased. By the plurality of spring tongues, the angular orientation of the decorative hood against the cover plate, especially in the normal case, the parallelism, can be adjusted well. Characterized in that the spring tongues are distributed over a larger area, unintentional opening up between decorative hood and cover plate is avoided.

On the dimensional stability of the components of the cover rosette altogether lower requirements are made than in cover rosettes of the type mentioned.

In an advantageous embodiment of the invention, the latching device comprises two latching elements with mating latching surfaces with a plurality of latching projections. With such locking surfaces formed the locking device several latching positions in relation to the passage opening axial direction. This allows the use of decorative hoods with different heights, all of which can be securely fastened by means of the same latching device. In addition, if one of the locking elements is fixed to the housing connected to the concealed fitting, by such a design of the locking device even with different depth of installation of flush-mounted in an installation wall, the covering rosette be mounted safely and visually appealing. The ability to always use the same locking device leads to cost savings in the production of the components of Abdeck rosette.

The latching projections are preferably sawteeth. Such locking projections are easy to manufacture and give a secure fit.

In a preferred embodiment of the invention, the saw teeth are asymmetrical. It is thereby achieved that the force required when engaging and disengaging the latching connection of the latching device is different.

Preferably, the flanks of the saw teeth, which are loaded when placing the decorative hood, a smaller angle with the direction of action of the force than the flanks of the saw teeth, which are charged upon release of the decorative hood. The effort required during assembly is relatively low and the latching device is nevertheless securely connected, since the connection produced by the latching device only triggers after overcoming a limit force whose magnitude is greater than that of the assembly force.

This effect occurs particularly strongly when the flanks of the saw teeth, which are loaded when the ornamental hood is released, are perpendicular to the effective direction of the force. Such vertical surfaces set in the effective direction of the force required to release the decorative hood a strong locking escapement and are easy and inexpensive to manufacture.

In a further advantageous embodiment of the invention, the decorative hood is resiliently biased in the latching device. The resilient bias reduces the requirements to the dimensional accuracy of the components of the cover rosette on and keeps the various parts always in frictional contact.

Preferably, the decorative hood has an edge surrounding its passage opening, which separates a radially inward, from the outside seen concave portion of a radially outer, seen from the outside convex portion. Such a shaping of the decorative hood ensures its defined deformation in the case of the resilient bias by the latching device. In addition, such a shaped ornamental hood looks visually appealing.

In a further advantageous embodiment of the invention, the locking device comprises a coaxial to the through hole of the cover ring member which has at least one locking projection on its outer periphery. At such a ring member locking projections are easy to install in the manufacture of the components of the covering rosette.

The ring element may be a separate component of the decorative hood. As a result, the manufacture of the decorative hood can be carried out separately from the production of the annular element. The decorative hood can then for example consist of materials that are visually appealing, but are not suitable for the formation of locking projections.

Preferably, in this case, the ring element has a radially projecting collar whose outer diameter is greater than the inner diameter of the through opening of the decorative hood. The decorative hood is held down in this embodiment by means of the locking projection having ring member in the assembled state. The decorative hood must have no special fasteners.

The collar of the ring element may expediently have recesses for receiving a corresponding tool head. With the help of such a tool which engages in the recesses, both the assembly and the dismantling of the cover rosette is simplified.

Alternatively, the collar may have an oval outer contour. Such a design of the Federal is particularly suitable for receiving a tool, with the help of which during assembly or disassembly of the covering rosette and a force in the circumferential direction of the ring member to be transmitted.

In an alternative embodiment of the invention, the ring element is permanently connected to the decorative hood. The number of unassembled cover rosette constructive loose items is reduced. This simplifies storage. In addition, ring element and hood are always securely connected to each other in such an embodiment.

The ring element can also be integrally connected to the decorative hood. This is advantageous in cases where a uniform manufacturing process is possible. Then the ring element and the decorative hood can be produced in one production step.

In a further advantageous embodiment of the invention, the ring element in the passage opening facing surface area on a circumferential groove for receiving a sealing ring. With the help of the sealing ring inserted into this circumferential groove, the ring element protects the concealed fitting against penetrating water.

The locking surface of the ring member of a further embodiment of the invention is designed as an external thread and the locking surface of the cover plate as a corresponding internal thread. The assembly or disassembly of the decorative hood can be done in this embodiment either on the screwing or loosening of the ring member or a corresponding pressure or tensile force in the passage opening of the hood coaxial direction on the ring member. The locking surfaces can also be designed so that the disassembly of the decorative hood is possible only by unscrewing the ring member. Thereby undesired release of the latching connection, e.g. be avoided by occurring internal voltages.

The invention may be designed so that the cover plate comprises the spring portion. In such an embodiment, the spring tongues are attached to the cover plate. The remaining components of the locking device then have a relatively simple geometry and can therefore be easily manufactured. Preferably, the spring portion is integrally formed on the cover plate.

The wall thickness of the spring tongues can be less than the wall thickness of the rest of the cover plate to which they are integrally formed. This lower wall thickness causes the spring tongues can be bent relatively easily compared to the deformation of the cover plate. The elastically yielding shape of the spring tongues can thus be easily manufactured.

The axial cross-section of the spring tongues with respect to the axis of the passage opening of the cover plate is preferably substantially U-shaped. Such a shape of the spring tongues supports their elastic compliance.

In an alternative embodiment of the invention, the ring element comprises the spring section. As a result, a cover plate with simple geometry can be realized. Preferably, the spring portion is integrally formed on the ring member.

The wall thickness of the spring tongues can be less than the wall thickness of the rest of the ring element, to which they are integrally formed, resulting in an easily produced elastic compliant ring element.

In a further embodiment of the invention, the latching device has a plurality of latching pins engaging in latching structures of the cover plate and connected to the decorative hood. In this case, no ring element is required as part of the covering rosette. The locking pin can also be easily and inexpensively.

Advantageously, the locking pins are permanently connected to the decorative hood. The covering rosette thus consists of relatively few individual parts. On separate fastening means which connect the locking pin with the decorative hood, can be omitted.

Preferably, the locking pins are integrally connected to the decorative hood. A production of the decorative hood together with the locking pin in a single manufacturing step is made possible. The position of the locking pin on the decorative hood is also easy to specify during manufacture.

In an advantageous embodiment, the locking structures of the locking pins corresponding to the latching structures of the cover plate are designed as a thread. such Locking structures can be easily attached to the preformed locking pin bodies.

In a further embodiment, the latching structures of the cover plate engage in the corresponding latching structures of the latching pins only in a surface section lying outside with respect to the passage opening. In conjunction with the elastically yielding spring tongues, the simple assembly and disassembly of the decorative hood is ensured by the engagement of the locking pin in or release the locking pin from the locking device, as with respect to the axis of the opening of the cover plate inner locking structures of the locking pin relative to the cover are not active.

Figur 1

eine teilweise aufgebrochene Seitenansicht einer Unterputz-Sanitärarmatur mit einer Abdeck-Rosette, die eine flache Zierhaube aufweist;

Figur 2

eine Ausschnittsvergrößerung einer Rasteinrichtung der Abdeck-Rosette von Figur 1;

Figur 3

einen Schnitt durch Figur 4 gemäß Linie III - III;

Figur 4

eine Aufsicht einer Abdeckplatte der Abdeck-Rosette von Figur 1;

Figur 5

eine Ausschnittsvergrößerung eines Federabschnitts der Abdeckplatte von Figur 3;

Figur 6

eine Aufsicht einer Zierhaube der Abdeck-Rosette von Figur 1;

Figur 7

einen Schnitt durch Figur 6 gemäß Linie VII - VII;

Figur 8

einen Schnitt durch Figur 6 gemäß Linie VIII - VIII;

Figur 9

einen Schnitt durch Figur 10 gemäß Linie IX - IX;

Figur 10

eine Aufsicht eines Ringelements der Abdeck-Rosette von Figur 1;

Figur 11

eine Ausschnittsvergrößerung des Ringelements von Figur 9;

Figur 12

einen Teilschnitt einer zu der von Figur 1 ähnlichen Abdeck-Rosette mit einer hohen Zierhaube;

Figur 13

einen Teilschnitt in vergrößerterm Maßstab einer anderen Ausführungsform einer Abdeck-Rosette mit einem einen Federabschnitt aufweisenden Ringelement;

Figur 14

einen Teilschnitt einer zu der von Figur 1 ähnlichen Abdeck-Rosette, deren Zierhaube über Rastzapfen befestigt ist; und

Figur 15

eine Ausschnittsvergrößerung einer Rasteinrichtung der Abdeck-Rosette von Figur 14.

Embodiments of the invention will be explained in more detail with reference to the drawing; show it:

FIG. 1

a partially broken side view of a concealed plumbing fixture with a covering rosette, which has a flat decorative hood;

FIG. 2

an enlarged detail of a locking device of the covering rosette of FIG. 1 ;

FIG. 3

a cut through FIG. 4 according to line III - III;

FIG. 4

a top view of a cover plate of cover rosette of FIG. 1 ;

FIG. 5

an enlarged detail of a spring portion of the cover of FIG. 3 ;

FIG. 6

a top view of a decorative hood cover rosette from FIG. 1 ;

FIG. 7

a cut through FIG. 6 according to line VII - VII;

FIG. 8

a cut through FIG. 6 according to line VIII - VIII;

FIG. 9

a cut through FIG. 10 according to line IX - IX;

FIG. 10

a plan view of a ring element of the cover rosette of FIG. 1 ;

FIG. 11

an enlarged detail of the ring element of FIG. 9 ;

FIG. 12

a partial section of a to that of FIG. 1 similar cover rosette with a high ornamental hood;

FIG. 13

a partial section in enlarged scale another embodiment of a cover rosette with a spring portion having a ring member;

FIG. 14

a partial section of a to that of FIG. 1 similar cover rosette, the decorative hood is attached via locking pin; and

FIG. 15

an enlarged detail of a locking device of the covering rosette of FIG. 14 ,

FIG. 1 shows a concealed fitting 1, the housing 2 is located substantially in a concealed box 3, which in turn is arranged in an installation opening 53 of an installation wall 5. A generally designated 4 cover rosette covers the mounting hole 53 to the outside. An area 6 of the concealed fitting 1 is guided by the cover rosette 4 in a manner to be described to the outside. Type and function of the flush-mounted fitting 1 are not of interest in the present context.

The covering rosette 4 has a cover plate 7. This is about screws not shown in the drawing, which are inserted through through holes 8 in the cover plate 7 (see also FIG. 4 ), attached to the region of the housing 2 of the concealed fitting 1, which is located inside the flush-mounting box 3.

As FIG. 4 can be seen, the cover plate 7 has the shape of a substantially annular plate with a through hole 52 for the implementation of the area 6 of the concealed fitting. 1

The region of the cover plate 7, which faces the passage opening 52, has a spring section designated overall by 9. This consists of a total of 12 ring-segment-shaped spring tongues 10, which are each separated by gaps (see. Fig. 4 ).

The structure of a spring tongue 10 show the Figures 3 and 5 , From an inner portion 11 of the annular cover plate 7 radially to the through hole 52, the spring tongues 10 are formed in cross-section approximately in the shape of a U. The facing away from the installation wall 5 boundary surfaces 12 of the spring tongues 10 are aligned with the side facing away from the installation wall 5 surface of the portion 11 of the cover plate 7, so that this surface of the cover plate 7 is flat. The bow section the U points in the direction of the installation wall 5 and projects beyond the installation wall 5 facing surface of the cover plate 7 also. The representation in FIG. 5 shows that the wall thickness of the spring tongue 10 is less than that of the portion 11 of the cover plate. 7

The entirety of the spring tongues 10 forms the coaxial to the passage opening spring portion 9. The spring tongues 10 have at their radially inner end face, ie in the region of the passage opening 52, designed as a latching structure 13 locking surface, which has saw teeth and is formed as an internal thread. FIG. 5 It can be seen that alternately each sawtooth edges 14, which are less inclined to the axis of the passage opening, follow more inclined sawtooth edges 15.

As in the FIGS. 1 and 2 shown, a decorative hood 16 of the cover rosette 4 is connected to the cover plate 7 via a latching device which is formed on the cover plate 7 and on the ring member 17. The ring member 17 has for this purpose an axially outwardly projecting collar 18 (see. FIG. 2 ), whose outer diameter is greater than the inner diameter of a region 6 of the concealed fitting 1 surrounding through hole 51 of the hood 16. A relative to the collar 18 radially recessed hollow cylindrical portion 19 of the ring member 17 has a formed as an external thread sawtooth locking structure 20 which in the latching structure 13 of the cover plate 7 engages, which is complementary to the latching structure 20 of the ring member (see. Figures 5 and 11 ).

The inner circumferential surface 21 of the ring element 17 bears against a corresponding outer lateral surface 22 of the region 6 of the flush-mounted fitting 1. To prevent ingress of water To prevent, in the lateral surface 21 of the ring member 17, a groove 23 is provided, from which a sealing ring 24 is received, which rests against the outer lateral surface 22 of the region 6 of the flush-mounted fitting 1.

As FIG. 1 shows, the decorative hood 16 has a radially inner portion 25, which is seen from the outside concave towards the area 6 of the concealed fitting 1 is lowered in the direction of the installation wall 5. In combination with a radially outer, seen from the outside convex portion 26 of the hood 16 of the concave portion 25 acts as an elastic region which bears against the retaining collar 18 of the ring member 17 under prestress.

The radially outer edge region 27 of the decorative hood 16 abuts against the installation wall 5 and encloses a sealing ring surrounding the installation opening 53 so that no water can penetrate from the edge region 27 under the covering rosette 4.

The FIGS. 9 to 11 show the ring element 17. This points to his in FIG. 9 top lying face four equally spaced radially outer recesses 36, which serve to receive a tool for the assembly and disassembly of the decorative hood 16.

In the detail enlargement of the FIG. 11 the shape of the sawtooth-shaped latching structure 20 is clear, which with that of the sawtooth-shaped latching structure 13 of the cover plate 7 (see. Fig. 5 ) corresponds.

The cover rosette 4 is mounted as follows:

First, the cover plate 7 is inserted with the passage opening 52 over the area 6 of the concealed fitting 1 and with screws (not shown in the drawing), which are guided through the through holes 8, bolted to the concealed fitting 1. The decorative hood 16 is inserted with its passage opening 51 over the area 6 of the concealed fitting 1 until the edge region 27 of the decorative hood 1 rests against the installation wall 5. The edge region 27 of the decorative hood 16 squeezes a sealing ring 28 bearing there against the installation wall 5.

Then, the ring member 17 is inserted over the area 6 of the concealed fitting 1. The above-described uneven inclination of the flanks 14 and 15 of the sawtooth detent structure 13 of the cover plate 7 and the corresponding slopes of the flanks of the sawtooth detent structure 20 of the ring member 17 cause the ring member 17 with a relatively low pressure force from the outside between the passage opening 52nd the cover plate 7 and the jacket surface 22 of the region 6 of the concealed fitting 1 can be inserted. When inserting the ring member 17 in the cover plate 7 whose portion slides 19 as long as the toothed portion on the spring portion 9 until a secure hold of the decorative hood 16 is ensured by the collar 18, as will be described below. Whenever teeth of the two latching structures 13 and 20 are pushed past each other, the resilient spring section 9, which is bent by the U-shaped spring tongues 9, deviates radially outwards by a corresponding distance.

The collar 18 of the ring member 17 comes during insertion of the ring member 17 initially in contact with the radially inner region of the portion 25 of the hood 16. If the ring member 17 further inserted, the collar 18 pushes the portion 25 of the hood 16 against the elastic spring force in the direction the installation wall 5 and spans the decorative hood 16 in a stable Position.

Alternatively, instead of being pressed into the cover plate 7, the ring element 17 can also be screwed into it, since the latching structures 13 and 20 are mutually complementary threads.

When disassembling the decorative hood 16, a tool (not shown in the drawing) is attached to the ring member 17 so that mating projections of the tool in the recesses 36 of the ring member 17 engage. With the help of the tool, the ring member 17 is unscrewed from the cover plate 7. The ring member 17, the decorative hood 16 and possibly other components can then be removed.

Alternatively, the ring element 17 can also be pulled off by a pulling force acting away from the installation wall 5, which attaches to the ring element 17. Due to the tensile force, the spring tongues 10 of the cover plate 7 yield radially outwards until the latching structures 13 and 20 separate from one another.

FIG. 12 shows a further embodiment of the attachment of a cover rosette 104 to a concealed fitting 101. The hood 116 of FIG. 12 is different from the one of FIG. 1 The fact that it builds higher than the decorative hood 16. The decorative hood 116 is therefore also referred to in the following as a "high" decorative hood. The increased overall height is achieved by the fact that with respect to the installation wall 105 perpendicular radially outer edge region 127 of the high ornamental hood 116 merges into a dome-shaped portion 126 only at a greater distance to the installation wall 105. Apart from this higher-building edge region 127 are the other Sections of the high ornamental hood 116, in particular the portions 125 and 126 are identical in shape to the portions 25 and 26 of the hood 16. When mounting the covering rosette 104, therefore, the portion 119 of the ring member 117 is not so deep in the direction of the installation wall 105 in a Detent structure 113 of the cover plate 107 is pressed in, as was the case with the mounting of the covering rosette 4. The assembly and disassembly of this embodiment are otherwise the same as described above.

Another embodiment of a locking device for a cover rosette 204 shows FIG. 13 , The ring element 217 bulges in an area surrounding the region 206 of the concealed fitting 201 spring portion 237 away from the outer surface 222 of the region 206 that it rests only with two axially spaced annular bearing surfaces 238 and 239 on the outer surface 222 of the region 206. The spring section 237 is, in analogy to the spring sections 9 and 109 described above, divided into ring segment-shaped spring tongues 210.

In the bearing surface 238, a groove 240 is additionally formed, which receives a sealing ring 241. This rests against the outer surface 222 of the region 206 and thus seals the ring element 217 against the region 206 of the flush-mounted fitting 201.

The spring tongues 210 of the spring section 237 of the ring element 217 have a sawtooth-shaped latching structure 220 on their radially outer circumferential surface. This engages in a corresponding sawtooth-shaped latching structure 213 of a cover plate 207. In contrast to the cover plates 7 and 107 described above, the cover plate 207 has no spring portion. The sawtooth-shaped latching structure 213 closes on that of the installation wall 205 facing away flush with the surface 242 of the cover plate 207 from. The installation wall 205 toward the sawtooth-shaped edge structure 213 has an axial extent which is greater than the wall thickness of the cover plate 207. The cover plate 207 also includes a through hole 208, which receives a screw, not shown for attachment to the upper portion of the housing 202 of the flush-mounted 201 serves.

When mounting a decorative hood 216, the ring member 217 is pressed into the cover plate 207. In this case, the spring portion 237 is deformed so that its outer diameter is reduced in order to allow the latching structure 220 to slide past the latching structure 213. If the tension caused by the collar 218 of the ring element 217 and the section 225 of the decorative hood 216 (analogous to the installation of the decorative hood 16) of the decorative hood 216 with the annular element 217 is sufficient, the latching structures 213 and 220 engage with one another, due to the spring action of the Spring section 237 are pressed against each other.

When disassembling the decorative hood 216, a tensile force is exerted on the annular element 217. In this case, the spring section 237 is flattened in the direction of the region 206 of the flush-mounted fitting 201. As a result, the outer diameter of the spring portion 237 decreases so that the latching structures 213 and 220 can be separated from each other.

In the cover rosette 304 of the FIGS. 14 and 15 For example, another embodiment of attaching a decorative hood 316 to a cover plate 307 is shown. Here locking pegs 344 are attached to a radially inner portion 325 of the hood 316.

In the mounted state, the longitudinal axis of the latching pin 344 is parallel to the axis of the area 306 of the flush-mounted fitting 301. The lateral surfaces 346 of the latching pins 344 have annular saw teeth 354. These have a contour which is analogous to that of the sawtooth-shaped latching structure 20 of the ring element 17 described above. A radially away from the axis of the region 306 pioneering portion 347 of the lateral surface 346 engages in a complementary saw teeth having portion 348 of the cover plate 307 a. At a radially inner region 349 of the lateral surface 346 of the locking pin 344 is a region 350 of the cover plate 307 also on. However, this has no saw teeth, but is smooth.

Radially out of the region 348, the cover plate 307 has a spring section 309 with spring tongues 310 that is analogous to the spring section 9.

The radial inner surface 321, with which the cover plate 307 rests against a corresponding outer radial surface 322 of the region 306 of the flush-mounted fitting 301, has a groove 323 and a sealing ring 324 which seals against this region 306.

When mounting the decorative hood 316, this is pressed in the direction of the cover plate 307, wherein the locking pins 344 slide into the openings of the cover plate 307, which are bounded by the areas 348 and 350. The resilience of the spring tongues 310 in the radial direction allows the latching structures of the regions 347 and 348 to slide past.

The decorative hood 316 is disassembled by being pulled off the cover plate 307. Here, the spring tongues 310 in the radial direction to the outside and the connection of the locking structures of the areas 347 and 348 is solved.

In the drawing, not shown embodiments of the covering rosette include locking structures with saw teeth, which have edge slopes that differ from those described above. For example, one of the sawtooth edges may be perpendicular to the axis defined by the passage opening of the cover plate. Also, the edge slopes can be designed so that the tensile force required to disassemble the hood is smaller than the pressure required during assembly.

The latching structures of all embodiments can, as in the embodiment of Fig. 1 described, optionally be formed as a thread or as a closed, parallel ring structures.

In the latter case, the locking device can only be closed by pressure and released by train.

Claims (27)

1. Covering rosette (4; 104; 204; 304) for a sanitary flush-mounted fitting (3),
   with a covering plate (7; 107; 207; 307),
   with passage bores (8; 208) for screws via which the covering plate (7; 107; 207; 307) is capable of being fastened to the flush-mounted fitting,
   with an ornamental hood (16; 116; 216; 316),
   and with a latching device comprising two interacting constituents,
   wherein the ornamental hood (16; 116; 216; 316) is detachably fastened to the covering plate (7; 107; 207; 307) by means of the latching device, and
   wherein covering plate (7; 107; 207; 307) and ornamental hood (16; 116; 216; 316) comprise coaxial passage openings for a region (6; 106; 206; 306) of the flush-mounted fitting (3),
   characterised in that
   it (4; 104; 204; 304) comprises a spring section (9; 109; 237; 309) formed by several elastically yielding spring tongues (10; 110; 210; 310) being concentric with the passage openings (51, 52; 151, 152; 251, 252; 351, 352) and spaced from one another, and
   to the springy part of which one of the constituents of the latching device comprising at least one latching projection fixes the ornamental hood (16; 116; 216; 316) such,
   that the connection brought about by the latching device is capable of being released by a tensile force acting on the other constituent (17; 117; 217; 316) of the latching device (7, 17; 107, 117; 207', 217; 307, 316, 344) away from the covering plate (7; 107; 207; 307).
2. Covering rosette according to one of Claims 1, characterised in that the latching device (7, 17; 107, 117; 207, 217; 307, 316, 344) comprises two latching elements with latching faces (13, 20; 113, 120; 213, 220; 347, 348) matching one another and having several latching projections.
3. Covering rosette according to Claim 2, characterised in that the latching projections are sawteeth.
4. Covering rosette according to Claim 3, characterised in that the sawteeth are asymmetrical.
5. Covering rosette according to Claim 4, characterised in that the sides (14) of the sawteeth which are loaded in the course of attachment of the ornamental hood (16; 116; 216; 316) include a smaller angle with the effective direction of the force than the sides (15) of the sawteeth which are loaded in the course of detachment of the ornamental hood (16; 116; 216; 316).
6. Covering rosette according to Claim 5, characterised in that the sides of the sawteeth which are loaded in the course of detachment of the ornamental hood (16; 116; 216; 316) are perpendicular to the effective direction of the force.
7. Covering rosette according to one of Claims 1 to 6, characterised in that the ornamental hood (16; 116; 216; 316) is resiliently biased in the latching device (7, 17; 107, 117; 207, 217; 307, 317, 344).
8. Covering rosette according to Claim 7, characterised in that the ornamental hood (16; 116; 216; 316) comprises an edge surrounding its passage opening (51; 151; 251; 351) which separates a radially inner section (25, 125, 225, 325) which is concave when viewed from outside from a radially outer section (26, 126, 326) which is convex when viewed from outside.
9. Covering rosette according to one of the preceding claims, characterised in that the latching device (7, 17; 107, 117; 207, 217) comprises a ring element (17; 117; 217) which is coaxial with the passage opening (52; 152; 252; 352) of the covering plate (7; 107; 207) and which includes on its outer periphery a latching surface (20; 120; 220) comprising at least one latching projection.
10. Covering rosette according to Claim 9, characterised in that the ring element (17; 117; 217) is a component which is separate from the ornamental hood (16; 116; 216).
11. Covering rosette according to Claim 10, characterised in that the ring element (17; 117; 217) comprises a radially protruding flange (18, 118, 218), the outside diameter of which is larger than the inside diameter of the passage opening (51; 151; 251; 351) of the ornamental hood (16; 116; 216).
12. Covering rosette according to Claim 11, characterised in that the flange (18; 118) comprises recesses (36) for receiving a tool head corresponding therewith.
13. Covering rosette according to Claim 11, characterised in that the flange comprises an oval outer contour.
14. Covering rosette according to Claim 9 or one of Claims 11 to 13, characterised in that the ring element is non-detachably connected to the ornamental hood.
15. Covering rosette according to Claim 14, characterised in that the ring element is integrally connected to the ornamental hood.
16. Covering rosette according to one of Claims 9 to 15, characterised in that the ring element (17; 117; 217) comprises in its inner circumferential surface (21) a peripheral groove (23) for receiving a gasket (24).
17. Covering rosette according to one of Claims 9 to 16, characterised in that the latching face (20; 120; 220) of the ring element (17; 117; 217) is constructed as an external thread and the latching face (13; 113; 213) of the covering plate (7; 107; 207; 307) is constructed as an internal thread which is complementary thereto.
18. Covering rosette according to one of the preceding claims, characterised in that the covering plate (7; 107; 307) comprises the spring section (9; 109; 309).
19. Covering rosette according to Claim 18, characterised in that the wall thickness of the spring tongues (10; 110; 310) is smaller than the wall thickness of the remaining covering plate (7; 107; 307) onto which they are moulded.
20. Covering rosette according to Claim 18 or 19, characterised in that the axial cross-section of the spring tongues (10; 110; 310) with respect to the axis of the passage openings (51, 52; 151, 152; 351, 352) is substantially U-shaped.
21. Covering rosette according to one of Claims 9 to 17, characterised in that the ring element (217) comprises the spring section (237)
22. Covering rosette according to Claim 21, characterised in that the wall thickness of the spring tongues (210) is smaller than the wall thickness of the remaining ring element (217) onto which they are moulded.
23. Covering rosette according to one of Claims 1 to 8 or 18 or 20, characterised in that the latching device (307, 316) comprises a plurality of spigots (344) which engage in latching structures (348) pertaining to the covering plate (307) and which are connected to the ornamental hood (316).
24. Covering rosette according to Claim 23, characterised in that the spigots (344) are non-detachably connected to the ornamental hood (316).
25. Covering rosette according to Claim 23, characterised in that the spigots (344) are integrally connected to the ornamental hood (316).
26. Covering rosette according to one of Claims 23 to 25, characterised in that the latching structures (346) pertaining to the spigots (344) and corresponding with the latching structures (348) pertaining to the covering plate (307) are constructed as threads.
27. Covering rosette according to one of Claims 23 to 26, characterised in that the latching structures (348) pertaining to the spring section (310) only engage a surface section (347) which is situated on the outside with respect to the passage opening (352) in the corresponding latching structures (346) pertaining to the spigots (344).

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