EP4324990A1 - Wall rosette assembly with rectangular wall rosette for a plaster sanitary fitting - Google Patents

Abstract

Wall rosette arrangement (2) with a rectangular wall rosette (40) for an exposed sanitary fitting, comprising at least one circumferential frame (42) and a front panel (41) with a through opening (43) for an S-bend (30) on the building side or a pipe end with external thread, characterized in that - a fastening element (20) is provided which comprises at least one annular shoulder (21) with an internal thread, via which the fastening element (20) can be screwed onto a threaded shoulder (31) of the S-arm (30). and is provided on its outer circumference with at least one form-fitting means for torque transmission; - that the fastening element (20) is connected to an annular pressure disk (24) or has one which holds at least one sealing ring (26) on its rear side facing the wall; - that the fastening element (20) is provided on its outer circumference with at least one clamping means, via which the wall rosette can be clamped onto the shoulder (21) of the fastening element (20) by axial thrust in the direction of a wall surface and held in the position reached so that it cannot rotate; - that on the wall rosette (40) a cuboid-shaped hollow body which is open to the rear is formed by the frame (42) and the front panel (41), in which the fastening element (20) is accommodated; and- that the wall rosette (40) merges into a receptacle (44) on the rear side of the front panel (41).

Description

The invention relates to a wall rosette arrangement with a rectangular wall rosette for an exposed sanitary fitting with the features of the preamble of claim 1.

In order to be able to install a surface-mounted sanitary fitting such as a shower fitting, so-called S-bends are usually inserted into the socket ends of the hot and cold water pipes at a water tap point prepared on the building side. These are water-conducting parts that have threads on both sides. The two thread shoulders are parallel and offset from one another. By turning the two S-bends, slight deviations in the pitch between the two sleeve ends from the target dimension can be compensated for. Small misalignments can also be corrected during fine assembly so that the fitting is aligned exactly horizontally. In order to cover the S-bows and the wall recesses surrounding them, wall rosettes are placed on the threaded shoulders of the S-bows that emerge from the wall. For round wall rosettes, it is sufficient to push them onto the threaded shoulder. The existing thread can also be used to screw the wall rosette onto the threaded shoulder and clamp it against the wall surface.

However, both shapes are not well suited for angular wall rosettes, as they cannot ensure that the edges of the mounted wall rosette are aligned exactly horizontally and vertically after the wall rosette has been attached and/or that this desired alignment is permanently maintained. Angled wall rosettes that are crooked are considered disadvantageous for visual reasons.

From the DE 10 2005 007 778 A1 a wall rosette arrangement for a round wall rosette is known. This includes a fastening element that can be screwed onto an S-bend and that has a pressure washer, on the back of which a sealing ring is held for sealing against the wall surface. The actual rosette, which serves as a decorative and covering element, is shaped like a cone and can be snapped onto the fastening element. Neither an angular position is specified in a positive or frictional manner, nor is an angular position once manually set maintained, so that it is not suitable for angular wall rosettes.

The object of the present invention is to improve a square wall rosette for a surface-mounted sanitary fitting so that it can be precisely aligned during installation and that the wall rosettes cannot be accidentally twisted even during later use, for example when cleaning.

This object is achieved according to the present invention by a wall rosette arrangement with the features of claim 1.

The invention is based on the fact that a fastening element is inserted between the S-bend and the wall rosette, in which at least one annular shoulder is present or which itself is annular overall. The shoulder provided for connection has an internal thread through which it can be screwed onto the threaded shoulder of the S-bend, in particular to such an extent that wall contact is established and axial bracing between the wall and S-bend is achieved. As a result, the fastening element is secured against rotation.

The security of the fastening element against rotation can also be achieved by making the thread undersized or e.g. B. by gluing the fastener to the threaded shoulder.

At least one clamping means is provided on the fastening element and/or on the wall rosette, via which the wall rosette can be clamped onto the fastening element by axial thrust in the direction of the wall surface, i.e. without a screw thread or additional fastening means, and is held in the position reached so that it cannot rotate.

In particular, the clamping means is an O-ring that is made of an elastomer.

The associated wall rosette has a rectangular front panel and a surrounding frame, so that a cuboid-shaped hollow body that is open on one side is formed. The front panel has an opening for an S-bend on the building side.

Around this passage opening, the front panel is adjoined by a particularly cup-shaped receptacle, which can be clamped onto the associated shoulder on the fastening element with the clamping means, in particular an O-ring or another elastomeric element. For this purpose, the cup-shaped receptacle has an inner diameter that is coordinated with respect to the outer diameter of the O-ring or another elastomeric element so that compression is possible with forces that can be caused by manually pushing the wall rosette axially onto the fastening element.

The compression causes a frictional clamping and the angular position, once set, is maintained when the sanitary fitting is in use and can only be changed with great effort, so that unintentional or even automatic twisting of the wall rosette is ruled out.

In order to be able to easily effect the tension against the wall, at least one form-fitting means is provided on the outer circumference of the fastening element. This can be at least one pair of wrench surfaces on which an open-end wrench can be attached.

It is also possible to form a corrugation on the outer edge in order to be able to grip the fastening element more easily and thus to be able to transmit a higher torque.

If a higher torque transmission is possible, then it can be advantageous to produce the internal thread on the fastening element, which is made in particular from thermoplastic material, with a slight undersize in the form of a transition fit, so that the clamping forces are increased and a later unintentional rotation on the thread shoulder of the S-bend is prevented is avoided.

An additional shoulder on the fastening element forms a pressure washer with a larger diameter, which is placed against the wall when the fastening element is screwed onto the S-bend. The pressure disk has at least one sealing ring on its back facing the wall. As an additional function, the fastening element for the wall rosette seals the wall plane around the S-bend, so that water cannot penetrate into the wall via the recess in the wall covering that is always present in the area.

In a first embodiment, the fastening element also has an annular shoulder which is intended for connection to the S-bend. The same shoulder or another shoulder can accommodate the O-ring, onto which a cup-shaped receptacle, which is formed on the back of the front surface of the wall rosette around the through opening, can be clamped.

The following variants are possible for forming the clamp connection between the fastening element and the cup-shaped receptacle on the wall rosette:
According to one embodiment, the outer circumference of the shoulder provided for fastening on the fastening element is cylindrical, just as the inner circumference of the receptacle is cylindrical. This means that the clamping effect is determined solely by matching the inner diameter of the mount on the wall rosette and the outer diameter of the O-ring.

The outer circumference of the fastening element can also be conical, with the cup-shaped receptacle on the wall rosette being cylindrical or vice versa. The cone angle should be less than 5°, rather less than 2°. The design with a cone has the advantage that the strength of the compression of the O-ring and the clamping force when pushing on the wall rosette can be adjusted. Since the inner diameter of the receptacle tapers conically towards the back of the front panel, the annular gap between the shoulder and receptacle also tapers and the O-ring located there is compressed more strongly the further the rosette is moved axially on the fastening element. To adjust the clamping force, the fastening element on the threaded shoulder of the S-bend can be positioned axially closer to the wall or slightly further away from it.

In a further possible embodiment of the invention it is provided that the clamping means is formed by at least one resilient pin, which is connected to the rear side of the front panel of the wall rosette and which can be snapped into a recess on the shoulder of the fastening element with a locking projection. In the axial direction, the locking projection creates a positive lock. The anti-twist device is also frictional, as the resilient pin presses on the heel.

The clamping effect is preferably increased in that the recess is a groove extending over the outer circumference and that around the There are several resilient pins around the opening of the wall rosette, which engage in the groove.

The resilient pins can be part of the cup-shaped receptacle on the back of the wall rosette, or they can form a circular arrangement that replaces such a receptacle.

In this embodiment, the frictional connection can be further increased by the fact that an elastomeric sealing ring is mounted on the shoulder of the fastening element, as in the first embodiment, and that the pins spring onto the sealing ring or engage over the sealing ring into the recess and at the same time contact the sealing ring. It is also conceivable to mount the additional sealing ring directly in the groove.

In order to improve the anti-twist protection of the wall rosette, it can be provided in both embodiments of the fastening element that a plurality of positioning notches are formed on the outer circumference of the shoulder that has the largest diameter, i.e. usually on the outer circumference of the pressure disk, which are arranged at a small angular pitch to one another . These positioning notches can also form a corrugated structure as a form-fitting means for torque transmission. In addition, at least one pin or web is formed or otherwise attached to the inside of the frame of the wall rosette, which engages in one of several positioning notches when the wall rosette is pushed axially onto the fastening element.

Fig. 1

eine erste Ausführungsform einer Wandrosettenanordnung in einer Explosionsansicht;

Fig. 2

eine Wandrosette in perspektivischer Ansicht von der Rückseite her gesehen;

Fig. 3

ein Befestigungselement für eine zweite Ausführungsform einer Wandrosettenanordnung in perspektivischer Ansicht;

Fig. 4

eine Wandrosette für die zweite Ausführungsform in perspektivischer Ansicht von der Rückseite her gesehen;

Fig. 5

die zweite Ausführungsform der Wandrosettenanordnung, in perspektivischer Ansicht von der Rückseite her gesehen, und

Fig. 6

die zweite Ausführungsform der Wandrosettenanordnung, in perspektivischer Schnittansicht.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings. The figures show in detail:

Fig. 1

a first embodiment of a wall rosette arrangement in an exploded view;

Fig. 2

a wall rosette in a perspective view seen from the back;

Fig. 3

a fastening element for a second embodiment of a wall rosette arrangement in a perspective view;

Fig. 4

a wall rosette for the second embodiment seen in a perspective view from the back;

Fig. 5

the second embodiment of the wall rosette arrangement, seen in a perspective view from the back, and

Fig. 6

the second embodiment of the wall rosette arrangement, in a perspective sectional view.

In Figure 3 a wall rosette arrangement 2 according to the invention is shown in an exploded view. An S-arch 30 is present on the building side. It has two threaded shoulders 31, one of which protrudes from the wall level.

A fastening element 20 has an annular shoulder 21 with a threaded hole 23 with which it can be screwed onto the threaded shoulder 31 of the S-bend 30. Key surfaces 22 are formed on the shoulder 21 and an O-ring 27 is fitted.

An annular pressure disk 24, which is stiffened via webs 25, adjoins the paragraph 21 like a collar. A receptacle for another sealing ring 26 is formed on the back of the pressure disk 24. When the fastening element 20 is screwed onto the S-bend 30, the sealing ring 26 is pressed onto the wall surface via the pressure washer 24.

Figure 2 shows the back of the wall rosette 40 in a perspective view. It has a front panel 41 with a through opening 43 and is surrounded by a frame 42, so that a cuboid, open at the back Hollow body is formed. A cup-shaped receptacle 44 adjoins the feed-through opening 43 on the back of the front plate 42, the inner diameter of which is larger than the diameter of the feed-through opening 43, since the radial area in between is required to accommodate the fastening element 20 including the O-ring.

In Figure 3 a fastening element 20' is shown for a second embodiment of a wall rosette arrangement 3 designed according to the invention. The fastening element 20' has been screwed onto a threaded shoulder 31, which protrudes from a wall plane, until it rests on the wall surface.

The fastening element 20 'has an annular shoulder 21' with which it can be screwed onto the threaded shoulder 31 of the S-bend 30. A circumferential recess in the form of a groove 27' with a trapezoidal cross-section is provided on the shoulder 21', and two parallel key surfaces 22' are formed on the shoulder 21'. The shoulder 21' is adjoined by an annular pressure disk 24', which has a larger diameter than the shoulder 21' and is supported on it via webs 25'. A tooth structure with a plurality of positioning notches 28' is formed on the outer circumference of the pressure disk 24'.

A corresponding wall rosette 40 is in Fig. 4 shown in perspective view. It has a front panel 41' with a through opening 43'. The front panel 41' is surrounded by a frame 42', so that a cuboid hollow body that is open at the rear is formed. Several locking pins 44' are connected to the back of the front surface 41' of the wall rosette 40', so that the locking pins 44' protrude into the cavity and form a receiving ring 45'. In addition, webs 46' are formed at four positions on the inside of the frame 42'.

Figure 5 shows the entire wall rosette arrangement 3 from the back. The wall rosette 40' is attached to the fastening element 20' in that the front panel 41 'has a plurality of resilient locking pins 44' on its rear side, which protrude vertically and which can each be snapped into the groove 27' on the shoulder 21' with a locking pin 44'. The webs 46' each engage in one of the numerous positioning notches 28' which are formed on the outer circumference of the annular pressure disk 24' of the fastening element 20'. As a result, the angular position of the wall rosette 40' relative to the fastening element 20' is fixed in a form-fitting manner after the wall rosette 40' has been pushed onto the fastening element 20'. A receptacle for another sealing ring 26' is formed on the back of the pressure disk 24'. When the fastening element 20' is screwed onto the S-bend 30', the sealing ring 26' is pressed onto the wall surface via the pressure washer 24'.

Figure 6 shows the entire wall rosette arrangement 3 in a perspective sectional view, in particular the engagement of the locking pins 44 'in the groove 27' being visible.

Reference symbol:

2.3

Wall rosette arrangement

20; 20'

fastener

21; 21

Paragraph

23

Threaded hole

22; 22'

key surfaces

24; 24'

pressure washer

25; 25'

Bridges

26; 26'

sealing ring

27

O-ring

27'

groove

28'

Positioning notches

30

S-bow

31

Threaded heel

40; 40'

Wall rosette

41; 41'

Front panel

42; 42'

Frame

43; 43'

Passage opening

44

cup-shaped holder

44'

locking pin

45'

Receiving wreath

46'

Bridges

Claims (9)

Wall rosette arrangement (2, 3) with a rectangular wall rosette (40; 40') for a surface-mounted sanitary fitting, comprising at least one circumferential frame (42; 42') and a front panel (41; 41') with a through opening (43) for one S-bend (30) present on the building or a pipe end with an external thread,
characterized in that - a fastening element (20; 20') is provided, which comprises at least one annular shoulder (21; 21') with an internal thread, via which the fastening element (20; 20') is mounted on a threaded shoulder (31) of the S-bend (30 ) can be screwed on and is provided on its outer circumference with at least one form-fitting means for torque transmission; - that the fastening element (20; 20') is connected to an annular pressure disk (24; 24') or has one which holds at least one sealing ring (26; 26') on its rear side facing the wall; - that the fastening element (20; 20') is provided on its outer circumference with at least one clamping means, via which the wall rosette can be clamped onto the shoulder (21; 21') of the fastening element (20; 20') by axial thrust in the direction of a wall surface and to be held in the position reached so that it cannot twist; - that on the wall rosette (40; 40') a cuboid-shaped hollow body is formed by the frame (42; 42') and the front panel (41; 41'), in which the fastening element (20; 20') is accommodated is; and - that the wall rosette (40; 40') merges into a receptacle (44) or a receptacle ring (45') on the rear side of the front panel (41; 41'). Wall rosette arrangement (3) according to claim 1, characterized in that the clamping means of the fastening element (20') is formed by at least one recess on the shoulder (21') and the receptacle on the wall rosette (40') has at least one resilient pin (44'). ), which is connected to the rear side of the front panel (41) of the wall rosette (40 ') and which can be snapped into the recess on the shoulder (21') with a locking projection (45'). Wall rosette arrangement (3) according to claim 2, characterized in that the recess is a groove (27') extending over the outer circumference and that around the through opening (43') there are several resilient pins (44') on the wall rosette (40'). are provided which engage in the groove (27 '). Wall rosette arrangement (3) according to claim 3, characterized in that the resilient pins (44') are part of a cup-shaped receptacle on the back of the wall rosette (40') or form a ring in a round arrangement which replaces such a receptacle. Wall rosette arrangement (2, 3) according to at least one of the preceding claims, characterized in that a plurality of positioning notches (28') are formed on the outer circumference of the fastening element (20; 20') and that at least one pin or web (46') is attached to the inside of the Frame (42 ') of the wall rosette (40') is formed, which engages in one of the several positioning notches (28'). Wall rosette arrangement (2, 3) according to at least one of the preceding claims, characterized in that the internal thread on a fastening element (20; 20') made of thermoplastic material is slightly undersized in the form of a transition fit in relation to the external thread of the S-bend (30 ) owns. Wall rosette arrangement (2, 3) according to at least one of the preceding claims, characterized in that the positive locking means are formed on the fastening element (20; 20') by at least one pair of parallel key surfaces (22'). Wall rosette arrangement (2, 3) according to at least one of the preceding claims 1 to 7, characterized in that the outer circumference of the annular shoulder (21; 21 ') on the fastening element (20; 20') as well as the inner circumference of the receptacle (44) on the Wall rosette (40; 40') are cylindrical. Wall rosette arrangement (2, 3) according to at least one of the preceding claims 1 to 7, characterized in that either the outer circumference of the shoulder (21) on the fastening element or the inner circumference of the receptacle (44) on the wall rosette (40; 40 ') is conical with a cone angle of no more than 5° and the other part is cylindrical.

Images