EP2600074A1 - Cover, in particular for a wall sleeve - Google Patents

Abstract

The device (1) has covering elements (11, 12) held by a mounting rod (15) and folded opposite to each other. The covering elements are guided through a ventilation pipe (2) that is inserted into an opening running from an inner side to an outer side of a wall (3). The covering elements are unfolded through rotation of the mounting rod and connected with one another by a joint i.e. hinge joint (13), where the joint is arranged at a distance from a center of gravity of the covering device. The mounting rod is connected with an inner wall-sided end of the ventilation pipe by a fastening unit.

Description

The invention relates to a covering device, in particular for a wall box, as well as a wall box provided with a covering device.

A wall box is inserted into a wall to create a connection between the interior and the exterior of a building. Typically, a wall box is provided in the kitchen in order to convey the collected from an extractor hood exhaust air from the range of the cooker to the outside or supply fresh air from the outside.

The wall box usually comprises a tube or two telescoping tubes and a corresponding cover device or a closure lid. When using two telescoping tubes whose total length can be adjusted continuously to the thickness of the masonry. Usually, pipe diameters of 100 mm to 150 mm are used. From the DE102007040731A1 a wall box is known in which the closure lid depending on the pressure difference between the air pressure in the pipe and the external pressure can open and close automatically.

The installation of a wall box usually requires access from the building exterior. Only in this way can the cover be removed and serviced. For new buildings, the wall boxes must be installed before the scaffolding is dismantled. Later, however, the maintenance of the wall box is associated with high costs, which is why this is usually not done even if significant contamination has occurred and the function of the device is impaired.

The present invention is therefore based on the object to provide an improved covering device for a wall box and a wall box with such a covering device.

In particular, a cover device and a wall box are provided, which can be installed and maintained with minimal effort.

This object is achieved with a covering device and a wall box, which has the features specified in claim 1 or 15 features. Advantageous embodiments of the invention are specified in further claims.

The covering device makes it possible to close off a pipe, in particular a ventilation pipe of a wall box, which can be inserted into an opening running from the inside to the outside of a wall.

According to the invention, the cover device has at least two cover elements which are held by a mounting rod and which can be guided through the ventilation pipe and folded over one another and can be folded by rotation of the mounting rod.

With the solution according to the invention, the covering device can be guided through the ventilation pipe and mounted on the outside of the wall. Preferably, flange elements are provided on the walls facing the wall of the cover, which are insertable into the ventilation pipe.

To install the cover this is therefore folded, performed by means of the mounting rod through the pipe, turned on the outside and unfolded pulled back against the pipe, so that the flange elements can engage in the ventilation pipe. As a result, the Mounting rod preferably fixed, for example, connected to an elastic member which pulls the cover against the ventilation pipe.

To uninstall the cover this is pressed by means of the mounting rod to the outside, released from the vent pipe and rotated in the sequence so that the cover get over the mounting rod and are folded against each other. As a result, the cover can be conveyed back through the pipe and maintained.

The installation and uninstallation of the cover can therefore be done easily from the inside of the building. Access from the outside is not required. The covering device according to the invention can therefore be used particularly advantageously in buildings which are not accessible on the outside. Maintenance work can therefore be carried out conveniently, so that the function of the wall box is always optimally guaranteed.

The required rotations of the cover are effected on the one hand by the rotation of the mounting rod and on the other hand by gravity, which acts on the shared by the mounting rod cover and supports the installation process.

For this purpose, the two cover elements are connected to each other by a first joint, that they, the mounting rod in between, on the one hand folded against each other and on the other hand can be rotated so far apart until they are at least approximately aligned in one plane. Preferably, the first joint is a hinge joint, which is hinged to the mutually facing edges of the two cover elements.

The mounting bar is connected by a second joint directly or indirectly to the first joint. Preferably, the first and second hinges are configured and interconnected such that the mounting bar is rotatable in a plane perpendicular to the first hinge or to the unfolded cover members.

It is preferably provided that the deflection of the mounting bar is limited on the one hand in the position parallel to the cover and on the other hand in the position perpendicular to the cover by a stop. The one stop is formed by the first joint and the second stop by the front piece of the mounting rod or a flange provided, for example, on the first joint.

The first and the second joint are arranged such that their directions of rotation extend through preferably 90 ° to each other. In this way it is possible to turn the covering device on the basis of the mounting rod and the second joint in a position in which the first and the second joint are actuated by the force of gravity as desired.

For this purpose, it is provided that the second joint is arranged at a distance from the center of gravity of the covering device. This is accomplished by attaching the second hinge eccentrically to the first hinge or eccentrically on one of the cover members or by eccentrically providing the center of gravity of the cover device. In this case, the second joint can be mounted centrally on the first joint or centrically on one of the cover elements.

By means of the mounting rod, the cover device can therefore be rotated into a position in which the cover elements held by the first joint are rotated by gravity into a desired position or against each other or apart be folded. By means of the second joint, it is possible to rotate the first joint on the mounting rod, so that the cover sitting in the manner of a saddle on the mounting rod and can be transported through the vent pipe.

On the basis of the assembly rod, which is preferably rotatable relative to the cover elements only in one plane, the cover elements can also be rotated and optionally, for example horizontally or vertically, aligned.

After mounting the cover on the outside of the wall of the mounting rod is preferably secured by means of fasteners. For example, the mounting bar is connected to the inside wall-side end of the ventilation tube. Preferably, the fastening means comprise an elastic element by means of which the wall elements are pulled against the ventilation pipe. In this way it is prevented that the cover elements come loose and can cause noise when exposed to wind.

In a further preferred embodiment, the cover elements have at least one rotatably mounted lamella, which can be opened or closed by means of an actuating rod. The actuating rod can be driven manually or by means of a motor. Furthermore, the actuating rod can be held by a spring, which closes the at least one blade when no air flow is driven to the outside.

Fig. 1

eine erfindungsgemässe Abdeckvorrichtung 1 mit einem Montagestab 15, auf dem zwei durch ein Scharniergelenk 13 miteinander verbundene Abdeckelemente 11, 12 sitzen und durch ein Lüftungsrohr 2 zur Aussenseite einer Mauer 3 geführt werden;

Fig. 2

die Abdeckvorrichtung 1 von Figur 1 nach einer Drehung um 180° um die Achse des Montagestabs 15;

Fig. 3

die Abdeckvorrichtung 1 von Figur 2 nach der Drehung um 180° und dem anschliessend durch die Schwerkraft bewirkten Auffalten der Abdeckelemente 11, 12;

Fig. 4

die Abdeckvorrichtung 1 von Figur 3 nach dem Auffalten der Abdeckelemente 11, 12 und dem durch die Schwerkraft bewirkten Abkippen der in einer Ebene ausgerichteten Abdeckelemente 11, 12;

Fig. 4a

das erste Gelenk 13, welches die beiden Abdeckelemente 11, 12 miteinander verbindet und welches über ein zweites Gelenk 14 mit dem Montagestab 15 verbunden ist;

Fig. 5

die vor dem Lüftungsrohr 2 gehaltene Abdeckvorrichtung 1 von Figur 4 nach dem Abkippen der Abdeckelemente 11, 12, welche je ein dem Lüftungsrohr 2 zugewandtes Flanschelement 16 aufweisen;

Fig. 6

die Abdeckvorrichtung 1 von Figur 5 nach dem Zurückziehen der Abdeckelemente 11, 12, bei dem die Flanschelement 16 in das Lüftungsrohr 2 eingeführt wurden, und dem Fixieren des Montagestabs;

Fig. 7

die montierte Abdeckvorrichtung 1 von Figur 6 von vorn gesehen;

Fig. 8

eines der Abdeckelemente 11, welches drehbar gelagerte Lamellen 100 weist, die mittels eines Betätigungsstabs 10 geöffnet und geschlossen werden können;

Fig. 9a

das erste und das zweite Gelenk 13, 14 in einer vorzugsweisen Ausgestaltung;

Fig. 9b

das erste und das zweite Gelenk 13, 14 von Figur 9a in einer Explosionsdarstellung; und

Fig. 10

die Abdeckvorrichtung 1 mit einer Lamelle 100, die mittels einer Welle 101 drehbar gelagert und über eine drittes Gelenk 102 mit dem Betätigungsstab 10 verbunden ist.

The invention will be explained in more detail with reference to drawings. Showing:

Fig. 1

an inventive cover device 1 with a mounting rod 15, sit on the two by a hinge joint 13 interconnected cover members 11, 12 and by a Ventilation tube 2 are guided to the outside of a wall 3;

Fig. 2

the covering device 1 of FIG. 1 after a rotation through 180 ° about the axis of the mounting rod 15;

Fig. 3

the covering device 1 of FIG. 2 after the rotation by 180 ° and the subsequently caused by gravity unfolding of the cover members 11, 12;

Fig. 4

the covering device 1 of FIG. 3 after unfolding the cover elements 11, 12 and caused by gravity tilting of the aligned in a plane cover members 11, 12;

Fig. 4a

the first joint 13, which connects the two cover members 11, 12 with each other and which is connected via a second joint 14 with the mounting rod 15;

Fig. 5

held before the vent tube 2 covering 1 of FIG. 4 after tilting the cover elements 11, 12, which each have a the ventilation tube 2 facing flange 16;

Fig. 6

the covering device 1 of FIG. 5 after retracting the cover members 11, 12 in which the flange members 16 have been inserted into the ventilation pipe 2, and fixing the mounting rod;

Fig. 7

the mounted cover device 1 of FIG. 6 seen from the front;

Fig. 8

one of the cover 11, which rotatably mounted lamellae 100, by means of a Actuator bar 10 can be opened and closed;

Fig. 9a

the first and second hinges 13, 14 in a preferred embodiment;

Fig. 9b

the first and second joints 13, 14 of FIG FIG. 9a in an exploded view; and

Fig. 10

the cover device 1 with a blade 100 which is rotatably supported by a shaft 101 and connected via a third joint 102 with the actuating rod 10.

FIG. 1 shows a sectional view of a wall 3, in which a ventilation duct is provided with a ventilation pipe 2. The ventilation pipe 2 is closed by means of a covering device 1 according to the invention on the outside of the wall 3.

Like this in FIG. 1 is shown, the inventive cover device 1 can be guided through the vent pipe 2 to the outside of the wall 3 and does not have to be mounted from the outside.

For this purpose, the covering device 1 a mounting rod 15 which is pivotally connected to two cover members 11, 12, which are connected to each other via a first joint 13, preferably a hinge joint. Like this in FIG. 4 is shown, the mounting rod 15 is preferably connected via a second hinge 14 with the hinge joint 13. The second joint 14 is preferably configured such that the assembly rod 15 is rotatable in a plane from a first position parallel to the hinge joint 13 in a second position perpendicular to the hinge joint 13. Preferably, a stopper is provided, which prevents the mounting rod 15 can be turned on. Like this in FIG. 4a As shown, the second hinge 14 can be made relatively simple by providing a hinge plate 141 having an opening which is enclosed on both sides by the fork-shaped front piece of the mounting rod 15. Through an opening in the front piece of the mounting rod 15 and through the opening in the hinge plate 141 a bearing pin is guided through which rotatably holds the mounting rod 15 in the plane defined by the position plate 141 level. The mounting rod 15 can therefore be rotated only in this plane relative to the cover 11, 12 and with respect to the hinge joint 13. On rotation about its own axis, however, a torque is exerted on the hinge plate 141 and this rotated together with the hinge joint 13 and the cover members 11, 12.

For the transfer through the ventilation pipe 2, the cover elements 11, 12 lie in the manner of a saddle on the mounting rod 15 and are folded against each other. In this case, the hinge joint 13 is located directly on the assembly rod 15. The cover 11, 12 are each provided with a flange 16, which after folding the cover 11, 12 face each other. The cover device 1 can therefore be guided on the basis of the mounting rod 15 in the folded state through the vent pipe 2 to the outside of the wall 3 and back again.

On the outside of the wall 3, the cover 1 is unfolded and pulled back after unfolding, so that the flange 16 engage in the vent pipe 2.

After the covering device 1, as in FIG. 1 shown was passed through the vent pipe 2 to the outside, this can therefore be rotated by 180 ° on the basis of the mounting rod 15, as shown in FIG. 2 is shown. All parts of the second joint 14 follow this rotation and are only turned apart when the hinge joint 13 no longer rests on the mounting rod 15.

After turning into the in FIG. 2 shown situation therefore follow in the FIGS. 3 and 4 shown rotational movements of the cover 11, 12 by the action of gravity practically simultaneously.

In FIG. 3 It is shown that the two cover elements 11, 12 released from the mounting bar 15 or the corresponding elements of the hinge joint 13 are rotated apart by gravity until they lie in a common plane. The two flange elements 16, which are aligned perpendicular to the cover elements 11, 12, defined in this position a hollow cylinder whose diameter is slightly smaller than the diameter of the ventilation pipe. 2

In FIG. 4 It is shown that the ends of the cover elements 11, 12 facing the ventilation tube 2 are turned downwards by the action of gravity, wherein the hinge plate 141 of the second articulation 14 is rotated relative to the assembly rod 15. For this rotation to take place, it is necessary for the second joint 14 to be displaced outwards relative to the center of gravity of the two cover elements 11, 12. This is achieved by the second joint 14 itself being displaced outwards and connected, for example, in the range between one-third and one-quarter the length of the hinge joint 13. Alternatively, however, the center of gravity of the two cover elements 11, 12 are displaced to the outside. For this purpose, for example, an additional metal element on the underside of the cover 11, 12 are provided.

FIG. 5 shows the fully unfolded and held in front of the ventilation tube 2 cover 1. In this position the covering device 1 is again guided against the ventilation pipe 2, so that the flange elements 16 enter into the ventilation pipe 2, as shown in FIG FIG. 6 is shown. In this case, the covering device 1 is held by means of the flange elements 16, which are preferably held without play in the ventilation pipe 2. By fixing the mounting member 15 only has to be prevented that the flange 16 can solve again from the vent tube 2. For this purpose, the end piece of the mounting rod 15 facing away from the cover elements 11, 12 is connected by means of a fastening means 21 to a holding rod 22 which is anchored, for example, in the ventilation pipe 2. Preferably, the fastening means 21 or the retaining bar 22 is designed to be elastic, so that the covering device 1 is pulled with a constant force against the ventilation pipe 2. As a fastening means, for example, provided on both sides with hooked coil spring can be provided.

FIG. 7 shows the installed cover device. 1

The uninstallation of the cover 1 is done in reverse order. In the configuration of FIG. 6 the mounting rod 15 is released from the holding rod 22. Subsequently, the covering device 1 by means of the holding rod 15, as in FIG. 5 shown, pushed outwards. In the position of FIG. 4 the mounting rod is rotated by 180 ° about its own axis, so that the hinge joint 13 can tilt from above by the action of gravity on the mounting rod 15. Like this in FIG. 1 is shown, the two cover elements 11, 12 in the sequence on both sides of the mounting rod 15 down. Subsequently, the covering device 1 can be introduced into the ventilation pipe 2 and conveyed to the inside of the wall 3.

As a result, maintenance work can be carried out. The cover elements 11, 12 and the ventilation tube 2 can be comfortable cleaned and freed from dirt. Subsequently, the covering device 1 is in turn mounted in the manner described. The entire maintenance process can be completed within a few minutes.

FIG. 8 shows one of the cover 11, which has rotatably mounted blades 100, which are rotatable by means of an actuating rod 10. The lamellae 100 can therefore be optionally opened and closed after the installation of the covering device 1. It is also possible to drive the actuating rod 10 by means of a motor. Furthermore, the actuating rod 10 can be connected to a spring element, by means of which the blades 100 are held in a closed position until a fan drives air through the ventilation pipe 2 and the blades 100 rotates in an open position.

Fig. 9a shows the first and the second hinge 13, 14 in a preferred embodiment. Fig. 9b shows the first and the second hinge 13, 14 of FIG. 9a in an exploded view.

The first hinge 13 is configured as a simple hinge joint, which has a hinge shaft 133 which serves to hold first and second hinge elements 131, 132, which are connected to the first and the second cover element 11, 12, respectively. Furthermore, the hinge shaft 133 serves to hold the hinge plate 141 of the second hinge 14. The said hinge elements are provided with tubular elements which are offset from each other along an axis along which the hinge shaft 133 is inserted into the tubular elements. In this way, a part of the second joint 14 is advantageously integrated into the first joint 13.

The hinge plate 141 of the second hinge 14 is provided with an opening 142, which corresponds to an opening 151 in the fork-shaped front piece of the mounting rod 15. The front piece of the mounting rod 15 and the hinge plate 141 can therefore be rotatably connected to each other in a simple manner by means of a hinge pin.

FIG. 10 shows the cover 1 with a blade 100 which is rotatably supported by a shaft 101 and connected via a third joint 102 with the actuating rod 10. The third joint 102, which is in FIG. 10 Still shown separately, comprises a hinge body 1021 connected to the blade 100 and a hinge shaft 1022 inserted therein, which engages in an opening in the actuating rod 10.

The cover elements 11, 12 are made for example of plastic or metal and designed aesthetically advantageous. Openings can be provided as required and covered with a filter or an insect screen.

The covering device 1 can be advantageously integrated into known wall boxes, which essentially comprise a ventilation pipe and a cover. If the wall box further device elements, such as filter devices and drive devices, includes, they are preferably modular, so that they can be gradually inserted into the vent tube 2 after installation of the cover. The mounting rod 15 and the fastening means 21, 22 are optionally adapted to the respective solution.

Claims (15)

Covering device (1) in particular for a wall box with a ventilation pipe which can be inserted into an opening extending from the inside to the outside of a wall, characterized in that the covering device (1) has at least two cover elements (11, 12) held by a mounting bar (15) ), which are folded against each other through the vent pipe (2) feasible and by rotation of the mounting rod (15) are foldable and zufaltbar. Covering device (1) according to claim 1, characterized in that the two cover elements (11, 12) by a first joint (13), such as a hinge joint, are interconnected such that they, the mounting rod (15) between them, on the one hand against each other folded and on the other hand can be rotated so far apart until they are at least approximately aligned in a plane. Covering device (1) according to claim 2, characterized in that the assembly rod (15) by a second joint (14) is directly or indirectly connected to the first joint (13). Covering device (1) according to claim 3, characterized in that the directions of rotation of the first articulation (13) and the second articulation (14) extend preferably at 90 ° to each other. Covering device (1) according to claim 3 or 4, characterized in that the first joint (13) spaced from the center of gravity of the covering device arranged (1). Covering device (1) according to claim 5, characterized in that a) that the second joint (14) is mounted eccentrically on the first joint (13) or eccentrically on one of the cover elements (11, 12); or b) that the second joint (14) is centrally mounted on the first joint (13) or centrally on one of the cover elements (11, 12) and the center of gravity of the covering device (1) is provided eccentrically. Covering device (1) according to any one of claims 1-6, characterized in that the first and the second joint (13; 14) are configured and interconnected such that the first joint (13) is alignable parallel to the assembly rod (15) in that the cover elements (11, 12) form a saddle seated on the mounting rod (15). Covering device (1) according to one of claims 1-7, characterized in that the first and the second joint (13; 14) are designed and connected to one another such that the assembly rod (15) is arranged in a plane perpendicular to the first joint (13). or to the unfolded cover elements (11, 12) is rotatable. Covering device (1) according to claim 8, characterized in that the deflection of the mounting rod (15) on the one hand in the position parallel to the cover (11, 12) and on the other hand in the position perpendicular to the cover (11, 12) limited by a stop is. Covering device (1) according to any one of claims 1-9, characterized in that the two cover elements (11, 12) are foldable and rotatable in an assembly position, in which the first joint (13) is aligned horizontally or vertically. Covering device (1) according to one of claims 1-10, characterized in that the mounting rod (15) by fastening means (21, 22) preferably with the inner wall-side end of the ventilation tube (3) is connectable. Covering device (1) according to claim 11, characterized in that the fastening means (21, 22) comprise an elastic element (22), by means of which the wall elements (11, 12) are pulled against the ventilation pipe (2). Covering device (1) according to one of claims 1 - 12, characterized in that on the cover elements (11, 12) flange elements (16) are fixed, which are after the unfolding of the cover (11, 12) inserted into the ventilation pipe. Covering device (1) according to one of claims 1-13, characterized in that the cover elements (11, 12) are provided with at least one rotatably mounted lamella (100) which can be actuated by means of an actuating rod (10). Wall box with a ventilation pipe (2) and a covering device (1) according to one of claims 1-14.

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