IL299856A - Construction guard and pre-wall element with a construction guard - Google Patents

Description

PCT/EP2021/070302 PT/21749/WO - 1 - CONSTRUCTION GUARD AND PRE-WALL ELEMENT WITH A CONSTRUCTION GUARD The present invention relates to a construction guard according to the preamble of Claim 1, a pre-wall element according to the preamble of Claim 10 and a method for assembling a pre-wall installation according to Claim 14. Pre-wall installations are employed in many different ways, their use in the sanitary sector being especially widespread. The advantage of such a pre-wall installation in the sanitary sector lies in the fact that all the supply and wastewater lines are integrated into the pre-wall installation and are therefore out of sight. This makes it possible to use a completely uninterrupted cladding, which can be designed to suit any personal desires. In most cases, a plasterboard base is used for a cladding of this type, on to which a splashback is applied. A further advantage lies in the fact that the structure and quality of the actual wall are unimportant. To assemble such a pre-wall installation, pre-wall elements are used which have a frame with an installation plane for the cladding, the frame being fastenable to a wall of a room. Moreover, the frame generally comprises fastening points for sanitary elements, such as a toilet, urinal, bidet, wash basin, wash stand, flushing unit for toilets and urinals and the like. These fastening points are arranged in a standardised pattern in most cases, the sanitary elements having corresponding fastening means matching this pattern. It is furthermore already known to use a construction guard for the inspection opening of a flushing unit in the context of assembling the pre-wall installation. More precisely, when the pre-wall installation is assembled with, for example, a toilet, a pre-wall element with a flushing unit is used, the flushing unit itself comprising an inspection opening for maintaining the flushing unit and for receiving an actuating device. After the pre-wall element has been aligned and fastened, a plasterboard base, for PCT/EP2021/070302 PT/21749/WO - 2 - example, is fastened on the installation plane of the pre-wall element and a splashback is arranged thereon. While the cladding is being attached, dirt and dust can penetrate into the inspection opening. To prevent this, in most cases a construction guard is inserted into the inspection opening, covering this opening. Once the installation of the cladding is complete, this construction guard is removed again and the actuating device is then inserted into the inspection opening. It is the object of the present invention to improve the pre-wall installation and to make it more flexible. This object is achieved by the construction guard of the invention according to Claim 1, the pre-wall element of the invention according to Claim 10 and the method of the invention according to Claim 14 for assembling a pre-wall installation. Advantageous developments are indicated in the subclaims and in the following description together with the figures. It was found by the inventors that this object can surprisingly be achieved simply and cost-effectively if a common construction guard is arranged around at least one connection of a water-carrying line and at least one further connection, since this results in a unified construction guard for these two connections. As a result, the cladding can be installed without any adverse effect on the connection. Moreover, the construction guard can be made such that it is very compact, and the pre-wall installation can be fitted rapidly and cost-effectively. "Water-carrying" can mean both water-supplying and water-discharging. The construction guard of the invention for a pre-wall element for sanitary installations, the pre-wall element comprising a frame on which an installation plane exists for the installation of a cladding (e.g. plasterboard panels and optionally splashbacks) of the pre-wall element and at least one first connection for a water inlet PCT/EP2021/070302 PT/21749/WO - 3 - and/or at least one second connection for a water outlet, the construction guard being configured such that it can extend beyond the installation plane in a perpendicular direction in relation to the installation plane, as viewed from the pre-wall element, is characterised in that the construction guard comprises at least an aperture for enclosing one of the connections along the periphery thereof and an aperture for enclosing another connection along the periphery thereof. The other connection may be, but does not have to be, the other of the first and second connections. The other connection may also be for a further first or second connection, so that two first connections or two second connections are enclosed by the construction guard. Moreover, the other connection may also be a completely different connection, such as a conduit connection, e.g. for an electrical cable. If the construction guard comprises at least two apertures for the first connection and the second connection, the pre-wall element may be one for the installation of a toilet, shower-toilet or urinal, for example. In an advantageous development, it is provided that at least one aperture is configured to fix the location of a connection within the construction guard, so that there is no risk of any deviations in the location of the connection in relation to the geometry of the construction guard. If, in this case, the construction guard is arranged at a predetermined location on the pre-wall element, the location of the connection in relation to the pre-wall element is thus defined. In an advantageous development, it is provided that the construction guard is configured to fix the location of two connections within the construction guard, thereby forming a template for the enclosed connections so that there is no risk of any deviations in the relative locations of the connections. If, in this case, the apertures for the two connections are arranged in a standardised manner, the construction guard simultaneously represents a dimensional template for the alignment of the two connections in the context of the pre-wall installation. As a result, it is easy to detect and compensate for construction-related deviations.

PCT/EP2021/070302 PT/21749/WO - 4 - Alternatively or in addition, this possibility may be employed with a specified location of the construction guard on the pre-wall element. The standardised arrangement may relate to a standardised distance between the two apertures and/or a standardised position of at least one aperture within the construction guard. In an advantageous development, it is provided that a press fit exists between the aperture and the connection. As a result, the construction guard can be arranged on the pre-wall element particularly readily. In an advantageous development, it is provided that a fluid-tight seal exists on the aperture for sealing the aperture against the connection, said seal preferably being in the form of a lip seal or O-ring. This prevents a leak behind the cladding from being hidden, since leaking liquid is discharged into the construction guard and from there to the front of the cladding. However, the fluid-tight seal may also be provided by way of the press fit. In an advantageous development, it is provided that the construction guard comprises a side wall and/or a base, the side wall preferably protruding in relation to the base, the joint between side wall and base being configured in particular in a fluid-tight manner. As a result, the construction guard can be produced particularly readily, e.g. by injection moulding. In an advantageous development, it is provided that the side wall is configured in a closed manner. As a result, the construction guard is particularly effective. In an advantageous development, it is provided that the base is configured in a closed manner apart from corresponding apertures for the at least one connection. As a result, the construction guard is particularly effective. In an advantageous development, it is provided that the base comprises at least one predetermined breaking point for the optional provision of an aperture in the base, the PCT/EP2021/070302 PT/21749/WO - 5 - predetermined breaking point preferably being configured such that it can be severed by breaking or cutting, the predetermined breaking point being in particular configured in a fluid-tight manner. As a result, the construction guard can be adapted to specific requirements particularly simply and flexibly. For example, a predetermined breaking point may exist for an aperture for arranging an empty conduit for a power supply cable, and a predetermined breaking point may exist for an aperture for arranging a power supply unit for a shower-toilet. In an advantageous development, it is provided that the side wall is configured so as to follow at least certain regions of the outer peripheral contour of one of the enclosed connections, the side wall preferably being configured in this region such that it does not abut the connection outside the aperture. As a result, leaking liquid is discharged particularly well and visibly. In addition, the construction guard is configured in a particularly compact manner. In an advantageous development, it is provided that the side wall comprises a lateral broadening in a region between the apertures such that sufficient space exists for the apertures. As a result, the construction guard is configured in a particularly compact and cost-effective manner while nevertheless ensuring that there is sufficient space for any electrics that may have to be installed. In an advantageous development, it is provided that the side wall extends obliquely at least in certain regions, preferably exhibiting an inclination in the range of 0.5° to 2° in relation to the normal of the base, in particular an inclination of 1° in relation to the normal of the base. As a result, leaking liquid is discharged to the front of the cladding particularly well. In an advantageous development, it is provided that the side wall comprises at least one separation marking for separating off a part of the construction guard, said separation marking preferably being in the form of a continuous groove or fold. As a result, the construction guard does not have to be removed again after the cladding PCT/EP2021/070302 PT/21749/WO - 6 - has been arranged but may remain on the pre-wall element, the side wall of the construction guard being able to be shortened such that the construction guard finishes flush with the cladding or slightly behind the visible plane of the cladding. As a result, the construction guard exists even in the finished state of the pre-wall installation and any leaking liquid is always discharged safely to the front of the cladding and thus rapidly becomes visible, allowing appropriate maintenance measures to be taken in a timely manner. The separation marking allows very easy shortening in a standardised manner. In an advantageous development, it is provided that the construction guard is configured in one piece, preferably as an injection-moulded part. In this case it can be produced particularly simply and cost-effectively. In an advantageous development, it is provided that the construction guard comprises a fastening possibility for electrical and/or electronic components, the fastening possibility preferably existing at least partially on the back of the construction guard (the rearward part of the construction guard in relation to the cladding). In this case, for example, a power supply unit for the electrics of a shower-toilet can be arranged there in a space-saving and defined manner. If the component is arranged exclusively on the back, it can be protected against leakages. On the other hand, an aperture for fitting the component could also exist or be formable in the construction guard, so that, if required, the component may be fastened to the construction guard after the pre-wall installation has been assembled, e.g. in the event of changing from a toilet fitting to a shower-toilet fitting. Independent protection is claimed for this particular embodiment of the construction guard in which a fastening possibility for electrical and/or electronic components exists, i.e., for this embodiment, the construction guard does not have to have two apertures for two different connections but it is sufficient even if the construction guard comprises only one aperture for one connection.

PCT/EP2021/070302 PT/21749/WO - 7 - Independent protection is claimed for the pre-wall element of the invention for sanitary installations, having a frame, on which an installation plane exists for the installation of a cladding of the pre-wall element, and at least one first connection for a water inlet and/or at least one second connection for a water outlet, with a construction guard existing which extends beyond the installation plane in a perpendicular direction in relation to the installation plane, as viewed from the pre-wall element, characterised in that the construction guard encloses one of the connections along the periphery thereof with at least one aperture and encloses another connection along the periphery thereof with another aperture. In an advantageous development, it is provided that the construction guard encloses at least one first connection and one second connection along the periphery thereof. In this case, the pre-wall element may, for example, be one for the installation of a toilet, shower-toilet or urinal. If the construction guard comprises apertures for the two connections arranged in a standardised manner, it simultaneously represents a dimensional template for the alignment of the two connections in the context of the pre-wall installation. As a result, it is easy to detect and compensate for construction-related deviations. In an advantageous development, it is provided that the construction guard is configured according to the construction guard of the invention. In an advantageous development, it is provided that a press fit exists between the aperture and the connection. As a result, the construction guard can be arranged on the pre-wall element particularly simply. In an advantageous development, it is provided that a fluid-tight seal exists between construction guard and the at least one connection, the seal preferably being in the form of a press fit and/or a lip seal or O-ring. This prevents a leak behind the cladding from being hidden, since leaking liquid is discharged into the construction guard and from there to the front of the cladding.

PCT/EP2021/070302 PT/21749/WO - 8 - In an advantageous development, it is provided that the construction guard is pushed on to the at least one connection, with a press fit preferably existing. As a result, the construction guard can be arranged on the pre-wall element particularly simply and, if required, also detachably. Furthermore, independent protection is also claimed for the method of the invention for assembling a pre-wall installation, which is distinguished by the fact that at least one water-carrying connection is arranged on a frame of a pre-wall element and the construction guard of the invention is arranged such that it encloses the water-carrying connection with a first aperture and encloses another connection with a second aperture, a cladding of the pre-wall element being arranged thereafter. The construction guard is thus arranged only during the pre-wall installation itself for enclosing the water-carrying connection. In relation to this, it is not pre-installed on the pre-wall element before assembly of the pre-wall installation but is arranged separately from the frame. Thus, exigencies occurring during assembly may be dealt with particularly flexibly. In addition, individual decisions may be made as to whether or not such a construction guard should be used, so that not every pre-wall element has to be supplied with a construction guard but this is an optional extra. In an advantageous development, it is provided that one or more further installation measures, preferably fastening the frame to a wall, take place before the construction guard is arranged, and/or that one or more further installation measures, preferably the final fixing of one of the connections enclosed by the construction guard to the frame, take place between the arrangement of the construction guard and the arrangement of the cladding of the pre-wall element. The features and further advantages of the present invention will become clear in the following based on the description of a preferred exemplary embodiment in conjunction with the figures, in which, purely schematically: PCT/EP2021/070302 PT/21749/WO - 9 - Fig. 1 shows the pre-wall element of the invention in a perspective view from the front, Fig. 2 shows the pre-wall element of the invention according to Fig. 1 in a lateral sectional view, Fig. 3 shows the cut-out A according to Fig. 2 in an enlarged view, Fig. 4 shows the construction guard of the invention in a perspective view from the front, Fig. 5 shows the construction guard of the invention in a side view and Fig. 6 shows the construction guard of the invention in a perspective view from the back. Figures 1 to 3 show the pre-wall element 10 of the invention, Fig. 3 showing the cut-out A in a first enlarged view (left) and this again in a further enlarged view (right). Figures 4 to 6 in turn show the construction guard 66 of the invention in various views. It can be seen that the pre-wall element 10 of the invention possesses a frame 12, which consists of two vertical bars 14a, 14b and three horizontal bars 16a, 16b, 16c. Height-adjustable feet 18 are arranged on each of the vertical bars 14a, 14b. In addition, wall mounts 20 are located on the frame in the region of the upper horizontal bar 16c. With the aid of the feet 18 and the wall mounts 20, the pre-wall element 10 can be aligned and fixed in a room 22 in a conventional manner. In the frame 12, a flushing unit 24 is fixed, which is provided in a conventional manner with a tank 26 and a valve located in the interior thereof (not shown). In the flushing unit 24, an inspection opening 28 exists, which is closed here by an inspection opening construction guard 30. The inspection opening construction guard engages in the inspection opening 28 and comprises a peripheral side wall 32 and PCT/EP2021/070302 PT/21749/WO - 10 - a core 34 arranged therein for temporary stiffening, composed of expanded polystyrene (EPS), for example. A flushing pipe 36 extends downwards from the flushing unit 24 and ends in a flush bend 38 with a flushing water connection 40. A flushing water coupling piece 42 is inserted in the flushing water connection 40, with a lip seal 44 existing for sealing. Furthermore, an outlet connection 46 is located below the flushing water connection 40, which outlet connection is seated on an outlet bend 48 that opens into an outlet pipe 50. An outlet coupling piece 52 is in turn located in the outlet connection 46, with a lip seal 54 also existing here for sealing. Both the outlet coupling piece 52 and the flushing water coupling piece 42 are components that can be specially adapted for specific types of toilets. They are not essential parts of the pre-wall element 10 of the invention. In Fig. 1 and 2, they are shown only to illustrate their function and location, including in relation to the construction guard 66. Between the two horizontal bars 16a, 16b, two vertical bars 56a 56b are located, which possess fastening points 58 for fastening toilets and shower-toilets (not shown) and a fastening point 60 for installing a shower-water connection (not shown) for a shower-toilet. The outlet connection 46 is fixed to the lower horizontal bar 16a by way of a fastening device 62a, 62b. The flushing water connection 40 is in turn fastened to the two vertical bars 56a, 56b in a conventional manner by way of the fastening device 64. Finally, the construction guard 66 of the invention is arranged on the pre-wall element 10. This construction guard 66 has a box-shaped construction and comprises a base surface 68 and a side wall 70 extending continuously along the periphery of the base surface 68. The side wall 70 possesses a concertina-like fold 72, as a result of which PCT/EP2021/070302 PT/21749/WO - 11 - numerous grooves 74 exist. These represent separation markings, which are each arranged around the side wall 70 at a uniform distance from the base surface 68. As a result, it is simple to separate off, in a defined manner, the part of the side wall projecting beyond a cladding (not shown) that is arranged in the installation plane I (see Fig. 2) of the pre-wall element 10, e.g. using a utility knife. The inspection opening construction guard 30 also comprises corresponding separation markings (not shown). Furthermore, the construction guard 66 comprises a first aperture 76 for the outlet connection 46 and a second aperture 78 for the flushing water connection 40. Both the first aperture 76 and the second aperture 78 have a peripheral wall 80, perpendicular to the base surface 68, which extends over a sufficient depth to enclose outlet connection 46 and flushing water connection 40 respectively over a sufficient depth. The apertures 76, 78 here have an inner diameter such that they can form a press fit with the respective outer diameters of outlet connection 46 and flushing water connection 40 respectively. In addition, two further potential apertures 84, 86 exist on the base surface 68, each surrounded by a predetermined breaking point 88, 90, so that these apertures 84, may be laid open if required. The predetermined breaking points 88, 90 are in the form of stamped indentations, so that the apertures 84, 86 can be formed simply by pressing out the corresponding closure pieces 92, 94. However, these indentations are fluid-tight if they have not been damaged, so that no leakages can arise there. The aperture 84 is surrounded by a side wall 96 on the back 95a of the base surface (the side that faces the wall in the installed state of the construction guard 66, while the front 95b of the base surface 68 faces the sanitary element to be fitted, such as a toilet or shower-toilet), and serves to receive a power supply unit, which supplies the electrics of a shower-toilet, for example. The aperture 86 in turn serves to receive an empty conduit, e.g. for a power supply cable.

PCT/EP2021/070302 PT/21749/WO - 12 - The component is thus held in the aperture 84 and between the side walls 96 by a press fit, but could also be fastened to the side wall 96 by separate fastening means, such as screws and the like. Using the aperture 84 it is also possible to arrange the component subsequently, e.g. in the event of a conversion of the pre-wall installation from a toilet to a shower-toilet. If, on the other hand, the component is to be used right from the start, it could also be fastened only to the side wall 96, with the aperture 84 remaining closed. The electrical connections for e.g. a shower-toilet could then be guided through an empty conduit in the aperture 86, so that the component would be arranged on the construction guard 66 in a leak-protected manner. The side wall 70 is integrally connected to the base surface 68 by way of the joint 98. The entire construction guard 66 is produced simply and cost-effectively from a plastics material by an injection-moulding method, the side wall 70 broadening conically outwards from the base surface 68 at 1° in relation to the normal of the base surface 68, i.e. the periphery of the side wall 70 becomes larger with increasing distance of the corresponding portion of the periphery of the side wall 70 from the base surface 68. The construction guard 66 and the pre-wall element 10 are then used as follows. The frame 12 is first aligned and levelled in the room 22 in a defined manner and then fixed to the room 22 by way of the feet 18 and the wall mounts 20. The flushing unit 24 with the flushing water connection 40 and the connection pipe with the outlet connection 46 are already located on the frame 12, but with only the fastenings 62a, 62b of the outlet connection 46 being fixed while the fastening device for the flushing water connection 40 is still slightly adjustable in a vertical direction. The connection pipe 50 is then connected to a wastewater connection (not shown) in the room 22, and the outlet connection 46 is closed using a blanking plug (not shown) PCT/EP2021/070302 PT/21749/WO - 13 - to avoid odours. The flushing water connection 40 may also be closed using a blanking plug (not shown). The construction guard 66 is then pushed on to the connections 46, 40 in such a way that a press fit is obtained between the respective aperture 84, 86 and the associated connection 46, 40. As a result, a relatively good seal exists against the passage of liquid at this fitting point, it being possible for seals, e.g. in the form of elastic O-rings (not shown), to be arranged on the inner diameter of the aperture 84, 86 or on the outer diameter of the associated connection 46, 40 for fluid-tight sealing between the respective aperture 84, 86 and the associated connection 46, 40. An additional seal of this type will not be necessary in most cases, however, because leaking liquid is discharged directly into the room 22, as described below. Since the apertures 84, 86 are arranged such that they are spaced apart from each other in a pre-determined, i.e. standardised, pattern and fix the location of the connections 40, 46 by the press fits, the construction guard 66 represents a dimensional template for the arrangement of flushing water connection 40 and outlet connection 46. As a result, deviations in the location of the flushing water connection relative to the outlet connection 46 are automatically compensated for. Since the outlet connection 46 was already fixed to the frame 12, the flushing water connection is now set precisely in its vertical location with respect to the outlet connection according to a dimension that is in line with standardised toilets and/or shower-toilets so that the fitting thereof no longer causes any problems. After the fastening 64 for the flushing water connection 40 has been fixed, the cladding is then arranged and fixed on the installation plane I of the pre-wall element 10. The core 34 is then removed from the inspection opening construction guard and the side wall 32 of the inspection opening construction guard 30 and the side wall 70 of the construction guard 66 are shortened at an appropriate marking 74, so that these side walls 32, 70 do not protrude beyond the cladding.

PCT/EP2021/070302 PT/21749/WO - 14 - After the blanking plug of the outlet connection 46 has been removed and, if applicable, after the blanking plug of the flushing water connection 40 has been removed, the outlet coupling piece 52 and the flushing water coupling piece 42 are then inserted, the corresponding toilet is fixed to the fastening points 58, and outlet coupling piece 52 and flushing water coupling piece 42 are connected to the corresponding connections of the toilet. Finally, a suitable actuating device (not shown) is connected to the flushing unit, inserted into the inspection opening 28 and fixed. Because the construction guard 66 has been placed on to the two connections 46, in a sealed manner, any liquid leaking from the connections 46, 40 cannot run undetected behind the cladding but is discharged at the front of the cladding into the interior of the room 22, so that such a leak can be rapidly detected and treated. This is also assisted by the fact that the side wall 70 does not abut against the outlet coupling piece 52 and the flushing water coupling piece 42, and exhibits a conical broadening of 1° in relation to the normal of the base surface 68, as a result of which leaking liquid is readily discharged from the construction guard 66 into the room 22. The construction guard 66 does not have to be further secured because the press fit means that it is held very well at the connections 40, 46. In addition, the side wall extends backwards beyond the base surface 68 over a short portion 70a, which means that the construction guard 66 can be supported very well against the fastening devices 62a, 62b, 64. Alternatively, however, the construction guard 66 could also be fastened separately to the frame 12, in which case a defined fastening with respect to the precise location is also possible, as a result of which, if required, an adjustment of the fastening of the outlet connection 46 to the frame 12 could be performed.

PCT/EP2021/070302 PT/21749/WO - 15 - The erected pre-wall installation (not shown) in this case remains particularly flexible even after its completion insofar as it is still possible, for example, to change later from a normal toilet to a shower-toilet because the construction guard 66 reserves the space necessary for the electrics and keeps it clear. If, therefore, appropriate empty conduits and appropriate empty cables with a dummy terminal for the electrics are installed during the installation of the pre-wall, the electrics including power supply units and the like can also be installed and connected subsequently after the relevant closure pieces 92, 94 have been broken out. It has become clear from the preceding statement that an improved, more flexible pre-wall installation can be provided using the present invention. More precisely, with the aid of the construction guard 66 of the invention, the connections 40, 46 for flushing-water-supply line and/or wastewater-discharge line are not adversely affected by the installation, space is maintained for a subsequent installation of electrics, and leakages are detected rapidly. Furthermore, the construction guard is comparatively environmentally acceptable because it is not removed again but remains on the pre-wall element 10 of the invention and only a small projecting part of its side wall 70 is removed. Moreover, the construction guard 66 is relatively compact because the side wall 70 is configured so as to follow at least certain regions 100, 102 of the outer peripheral contour of the enclosed connections 40, and only exhibits a lateral broadening 106 in the region 104 between the apertures 76, 78 such that sufficient space exists for the apertures 84, 86 for the optional installation of electrics. The base surface 68 follows the path of the side wall 70. All the features presented in the general description of the invention, the description of the exemplary embodiments, the following claims and in the drawing may be essential to the invention both individually and in any combination with each other. These features and/or combinations of features are each able to substantiate an independent invention, the right to claim these being expressly reserved. Individual features from the description of an exemplary embodiment do not necessarily have to be combined with one or more or all of the other features mentioned in the PCT/EP2021/070302 PT/21749/WO - 16 - description of this exemplary embodiment in this case; every sub-combination is expressly also disclosed in this regard. In addition, product features of the device may also be used in a reformulated form as method features, and method features may be used in a reformulated form as product features of the device. Moreover, product features of the construction guard 66 may also be used in the context of the pre-wall element 10, and features of the pre-wall element 10 may be used for a more detailed definition of features of the construction guard 66. Such a reformulation is thus automatically also disclosed.

PCT/EP2021/070302 PT/21749/WO - 17 -

Claims (13)

1.- 19 -

2.Claims 1. A construction guard (66) for a pre-wall element (10) for sanitary installations, wherein the pre-wall element (10) comprises a frame (12), on which an installation plane (I) exists for the installation of a cladding of the pre-wall element (10), and at least one first connection (40) for a water inlet (36) and/or at least one second connection (46) for a water outlet (50), wherein the construction guard (66) is configured such that it can extend beyond the installation plane (I) in a perpendicular direction in relation to the installation plane (I), as viewed from the pre-wall element (10), characterised in thatthe construction guard (66) comprises at least an aperture (76) for enclosing one of the connections (46) along the periphery thereof and an aperture (78) for enclosing another connection (40) along the periphery thereof, wherein the construction guard is configured in such a way that a fluid-tight seal can be obtained at the aperture for sealing the aperture with respect to the connection (40, 46), and wherein the construction guard (66) comprises a side wall (70) and a base (68), wherein the side wall (70) preferably protrudes in relation to the base (68), wherein the joint (98) between side wall (70) and base (68) is configured in a fluid-tight manner, wherein the side wall (70) is configured in a closed manner, and the base (68) is configured in a closed manner apart from corresponding apertures (76, 78) for the at least one connection (40, 46), so that leakage fluid is discharged into the construction guard (66) and from there to in front of the cladding, and wherein the construction guard (66) is configured in such a way that it can be plugged onto the at least one connection (40, 46). 2. The construction guard (66) according to Claim 1, characterised in thatat least one aperture (76, 78) is configured to fix the location of a connection (40, 46) within the construction guard (66), wherein the construction guard (66) preferably is configured to fix the location of two connections (40, 46) within the construction guard (66), wherein in particular at least one aperture (76, 78) is arranged at a standardised position in the construction guard (66). - 20 -

3. The construction guard (66) according to Claim 1 or 2, characterised in thata press fit can be obtained between the aperture (76, 78) and the connection (40, 46) and/or in thata fluid-tight seal exists on the aperture for sealing the aperture against the connection, which seal is preferably configured as a lip seal or O-ring.

4. The construction guard (66) according to one of the preceding Claims, characterised in thatthe base (68) comprises at least one predetermined breaking point (88, 90) for the optional provision of an aperture (84, 86) in the base (68), wherein the predetermined breaking point (88, 90) preferably is configured such that it can be severed by breaking or cutting, wherein the predetermined breaking point (88, 90) is in particular configured in a fluid-tight manner.

5. The construction guard (66) according to one of the preceding Claims, characterised in thatthe side wall (70) is configured so as to follow at least certain regions (100, 102) of the outer peripheral contour of one of the enclosed connections (40, 46), wherein the side wall (70) preferably is configured in this region such that it does not abut the connection (40, 46) outside the aperture (76, 78), and/or in that the side wall (70) comprises a lateral broadening (106) in a region (104) between the apertures (76, 78) such that sufficient space exists for the apertures (84, 86), and/or in that the side wall (70) extends obliquely at least in certain regions, preferably exhibiting an inclination in the range of 0.5° to 2° in relation to the normal of the base (68), in particular an inclination of 1° in relation to the normal of the base (68), and/or in that the side wall (70) comprises at least one separation marking (74) for separating off a part of the construction guard (66), which is preferably configured as a continuous groove (74) or fold (72).

6. The construction guard (66) according to one of the preceding claims, characterised in thatthe construction guard (66) is configured in one piece, preferably as an injection-moulded part. - 21 -

7. The construction guard (66) according to one of the preceding claims, characterised in thatthe construction guard (66) comprises a fastening possibility (84, 96) for electrical and/or electronic components, wherein the fastening possibility (96) preferably exists at least partially on the back of the construction guard (66), wherein in particular an aperture (84) exists or is formable on the construction guard, through which aperture the component can be inserted into the construction guard (66).

8. A pre-wall element (10) for sanitary installations, having a frame (12) on which an installation plane (I) exists for the installation of a cladding of the pre-wall element (10), and at least one first connection (40) for a water inlet (36) and/or at least one second connection (46) for a water outlet (50), wherein a construction guard (66) exists which extends beyond the installation plane (I) in a perpendicular direction in relation to the installation plane (I), as viewed from the pre-wall element (10), characterised in thatthe construction guard (66) encloses one of the connections (46) along the periphery thereof with at least one aperture (76) and encloses another connection (40) along the periphery thereof with another aperture (78), wherein a fluid-tight seal exists at the aperture for sealing the aperture with respect to the connection (40, 46), and wherein the construction guard (66) comprises a side wall (70) and a base (68), wherein the side wall (70) preferably protrudes in relation to the base (68), wherein the joint (98) between side wall (70) and base (68) is configured in a fluid-tight manner, wherein the side wall (70) is configured in a closed manner, and the base (68) is configured in a closed manner apart from corresponding apertures (76, 78) for the at least one connection (40, 46), so that leakage fluid is discharged into the construction guard (66) and from there to in front of the cladding, and wherein the construction guard (66) is configured in such a way that it can be plugged onto the at least one connection (40, 46).

9. The pre-wall element (10) according to claim 8, characterised in thatthe construction guard (66) encloses at least two connections (40, 46) along the periphery thereof, preferably at least one first connection (40) and one second - 22 - connection (46) along the periphery thereof, and/or in that the construction guard (66) is configured according to one of Claims 1 to 9.

10. The pre-wall element (10) according to Claim 8 or 9, characterised in thata fluid-tight seal exists between construction guard (66) and the at least one connection (40, 46), wherein the seal preferably is configured as a press fit and/or as a lip seal or O ring.

11. The pre-wall element (10) according to one of Claims 8 to 10, characterised in thatthe construction guard (66) is pushed on to the at least one connection (40, 46), with a press fit preferably existing.

12. A method for assembling a pre-wall installation, characterised in thatat least one water-carrying connection (40, 46) is arranged on a frame (12) of a pre-wall element (10) and the construction guard (66) according to one of Claims 1 to 9 is arranged such that it encloses the water-carrying connection (46) with a first aperture (76) and encloses another connection (40) with a second aperture (78), wherein a cladding of the pre-wall element (10) is arranged thereafter.

13. The method according to Claim 12, characterised in thatone or more further installation measures, preferably a fastening of the frame (12) on a wall, take place before the arrangement of the construction guard (66), and/or in that one or more further installation measures, preferably the final fixing of one of the connections (40) enclosed by the construction guard (66) on the frame (12), take place between the arrangement of the construction guard (66) and the arrangement of the cladding of the pre-wall element (10).