EP3564589B1 - Ventilation device - Google Patents

Description

The present invention relates to a ventilation device with a fastening device.

Ventilation devices, such as, for example, fan boxes or extractor devices, are partially mounted in such a way that at least part of the ventilation device is received in a mounting opening in a mounting wall. The assembly opening can for example be an opening in a room ceiling. In the case of such assembly openings, the fastening of the ventilation device is problematic because, on the one hand, the ventilation device has to be held overhead. On the other hand, the part of the ventilation device which protrudes through the installation opening into the installation wall, in particular the ceiling, is not accessible to the user during installation.

In the DE 75 30 60 1U discloses a holder for a wall cupboard, in particular for a cupboard-shaped extractor hood, with at least one holder each attached to the cupboard above and below. The upper holder has a sliding element which is guided in a horizontal path and adjustable in the depth direction, which can be fixed to a preferably horizontal wall of the cabinet and at the same time can be clamped to the horizontal path.

In the CN 203364221 U discloses an embedded range hood comprising a range hood body that is embedded in a kitchen cabinet. At least one quick-assembly buckle is provided on the cooker hood. The quick-assembly buckle includes a clamping fin. The quick-assembly buckle is firmly attached to the side of the extractor body.

EP 2 570 733 A1 discloses an arrangement for securing an extractor device to an exhaust duct arranged in the ceiling, comprising a support element which can be fixed to the ceiling and in the opening of which a coupling member is arranged for connecting the exhaust duct to the exhaust duct of the extractor device. A chimney housing is attached to the carrier element. In the upper edge of the chimney housing openings are punched out, which interact with spring catches on the carrier element.

In the JP 2016 028 220 A an air supply and discharge grill is described, which is connected to a duct which is provided in the ceiling. At the lower end of the grill, connection areas are provided which are pivotable.

To mount an extractor hood in a floor opening of a piece of furniture, for example, from the DE 9016933 U1 an extractor hood known which has resilient latching lugs projecting outward on the side walls. During assembly, the locking lugs are pushed back and spring out again after passing through the floor opening, whereby the housing of the extractor hood latches in a self-locking manner on the upper edge of the floor opening.

A disadvantage of such a fastening is that the dismantling of the extractor hood is complex, since the locking lugs either have to be pulled into the interior of the housing using a tab or have to be unlocked using a screwdriver. In addition, with this type of attachment, assembly is only possible on floors of a piece of furniture that do not exceed a specified thickness.

The object of the present invention is therefore to create a ventilation device with a fastening device which allows the ventilation device to be fastened simply and reliably in a mounting opening of a mounting wall, in particular a ceiling. In addition, assembly should be flexible.

The invention is based on the knowledge that this object can be achieved in that the fastening device allows a pre-fixing of the ventilation device and a targeted readjustment of the fixing.

According to a first aspect, the object is therefore achieved by a ventilation device with a housing, the top of which is formed by a cover plate, and with at least one fastening device for fastening the ventilation device in a mounting wall, wherein at least one fastening device is arranged on the cover plate and wherein the fastening device comprises a base plate and a support element arranged movably above the base plate at least partially, the base plate of the Fastening device is attached to the top of the housing of the ventilation device or is formed by part of the top of the housing of the ventilation device. The fastening device is characterized in that the support element has an angular shape with a first and a second leg, the second leg is directed downwards relative to the first leg, the support element is held displaceably on the first leg on the base plate and the support element relative to the base plate is pivotable, so that the support element between a pre-fixing position in which the second leg protrudes over the edge of the base plate by an amount, an assembly position in which the second leg is pivoted downward relative to the pre-fixing position, and an insertion position in which the support element can be moved by an overhang that is less than the overhang in the pre-fixing position protrudes beyond the edge of the base plate.

According to the invention, a fastening device is a device by means of which a ventilation device can be fastened in a mounting wall. A fastening in which the ventilation device is introduced into the mounting wall at least in some areas is referred to as fastening in the mounting wall. The mounting wall here has a wall thickness that is less than the height of the area of the ventilation device that is inserted into the mounting opening. The ventilation device is preferably inserted into the assembly opening with its entire height. The mounting wall preferably represents a room ceiling and is also referred to as such in the following.

In particular, a housing of the fan device is preferably introduced into the assembly opening, which can also be referred to as a cutout, and fastened there. The fastening device can be referred to as a suspension especially when it is fastened in the ceiling of the room. The fastening device has a base plate and a support element. The support element is arranged at least partially on one side of the base plate. The support element is preferably predominantly on one side of the base plate. In the case of ceiling mounting, the support element is preferably predominantly above the base plate.

Directional information, such as above and below, unless otherwise stated, relate to the fastening device and its parts in a state of the ventilation device mounted in a room ceiling, with the base plate of the fastening device pointing downwards.

The ventilation device is characterized in that the support element has an angular shape with a first and a second leg. The legs of the support element preferably extend from the angle apex. The angle between the legs is preferably less than or equal to 90 °. However, it is also within the scope of the invention that the angle is greater than 90 °. However, the angle is preferably smaller than 180 °. The legs of the support element can be flat plates or profiles. In particular, the legs can be U-profiles, L-profiles or T-profiles. The angle vertex between the legs is preferably formed by a line.

According to the invention, the support element is arranged in such a way that the second leg is directed downward relative to the first leg. In addition, the support element is held displaceably on the first leg on the base plate and is pivotable relative to the base plate. As a result of this mounting or holding of the support element, the support element can be moved between a pre-fixing position, an assembly position and an insertion position.

The position of the support element in which it holds the ventilation device in an assembled state is referred to as the assembly position. The mounted state of the ventilation device is the state in which the ventilation device is in or above the mounting opening with a predetermined amount of the height of the ventilation device. The mounted state of the ventilation device is preferably the state in which the underside of the housing of the ventilation device lies on the underside of the mounting wall and thus the entire height of the housing lies in or above the mounting opening.

A position of the support element in which the ventilation device is held at an assembly opening but is not yet in the assembled state is referred to as a pre-fixing position. In particular, the support element (s) is used in the pre-fixing position to hang the ventilation device on the assembly opening. In In this state of the ventilation device, this and in particular the housing are, for example, still completely or at least largely below the assembly opening. However, the weight of the ventilation device is already held in the pre-fixing position by the fastening device.

The position in which the ventilation device with the fastening device (s) can be guided through the assembly opening is referred to as the insertion position of the support element.

According to the invention, in the pre-fixing position, the second leg of the support element protrudes by an overhang over the edge of the base plate. The protrusion by which the second leg projects beyond the edge of the base plate is greater than the distance between this edge of the base plate and the edge of the top of the housing of the ventilation device on which the fastening devices are arranged. As a result, the second leg protrudes at least partially over the edge of the top of the housing, which is also referred to as the cover plate. The assembly opening into which the ventilation device and in particular the housing is introduced generally has a dimension which corresponds to the dimension of the housing of the fan device. In particular, the mounting opening has a size which corresponds to the area of the cover plate of the housing. Since the second leg of the support element protrudes over the edge of the cover plate in the pre-fixing position, the housing can thus be hooked into the assembly opening. The second leg of the support element rests on the top of the mounting wall.

In an assembly position, the second leg of the support element is pivoted downwards in relation to the pre-fixing position. This means that the second leg is moved downward at least in the area protruding over the edge of the base plate. As a result, when moving from the pre-fixing position to the mounting position, the support element applies a force to the top of the mounting wall and the ventilation device is thereby raised.

Finally, in an insertion position, the support element protrudes over the edge of the base plate by a projection which is less than the projection in the pre-fixing position. The overhang is preferably dimensioned so that it corresponds to the distance between the edge of the base plate and the edge of the top of the housing of the ventilation device to which the fastening device (s) are attached corresponds to or is smaller than this distance. The protrusion over the base plate in the insertion position can also be zero.

The movement between the insertion position, the pre-fixing position and the assembly position of the support element is made possible by the displaceable and / or pivotable mounting of the support element on the base plate.

Since the support element is slidably and pivotably mounted on the base plate in the fastening device used according to the invention and can be brought into an insertion position, a pre-fixing position and an assembly position, a number of advantages are achieved.

In particular, the mounting of the ventilation device can be simplified by the fastening device. The ventilation device can be suspended from the mounting opening due to the pre-fixing position that the fastening device and in particular the support element can assume and the user no longer has to carry or lift the weight of the ventilation device during the further assembly of the ventilation device. Since the support element of the fastening device can also be brought into an assembly position in which it holds the ventilation device in the assembled state, assembly is further simplified. In particular, it is not necessary to provide a separate assembly device, which simplifies the structure of the fastening device and the ventilation device.

According to a preferred embodiment, the fastening device has an adjusting screw, the adjusting screw extends through the base plate, the adjusting screw is connected to the first leg of the support element via a hinge and the rotation of the adjusting screw causes the support element to move around the joint between the pre-fixing position and the Swiveled assembly position.

By providing a support element arranged on one side of a base plate in the fastening device used according to the invention, which on the one hand can be displaced relative to the base plate and can also be pivoted relative to the base plate, the support element can on the one hand be brought into a position when the ventilation device is inserted in which this does not protrude over the edge of the ventilation device and thus does not hinder the introduction into a section of a room wall. However, since the support element can assume a position in which it protrudes beyond the edge of the ventilation device, the ventilation device can be held in the mounting wall by the fastening device. By additionally providing an adjusting element in the form of an adjusting screw through which the support element can be pivoted, the relative position of the support element to the base plate and thus to the ventilation device and in particular to the top of the housing of the ventilation device can be changed so that the support element has a certain Exerts force on the mounting wall from above.

Since the adjusting screw extends through the base plate, the adjusting screw can be used to influence the other components of the fastening device, in particular the support element, during and after the assembly of the ventilation device. By means of the adjusting screw, in particular the support element is brought from a pre-fixing position into an assembly position or vice versa. The support element is preferably provided predominantly above the base plate and is no longer accessible to the user after the fastening device has been attached to the housing of the fan device and the fan device has been introduced into the assembly opening. When using an adjusting screw that extends through the base plate, however, the movement of the support element is made possible and thus a kind of blind assembly is made possible. In addition, the provision of the adjusting screw also facilitates dismantling, since the support element can be brought back into the pre-fixing position from the installation position via the adjusting screw. From this pre-fixing position, the support element then only has to be brought into the insertion position in order to be able to remove the ventilation device from the assembly opening. Since the adjusting screw is finally connected to the first leg of the support element, the lever arm can be used to apply a force via the second leg. Because the connection between the adjusting screw and the first leg takes place via a joint, a translational movement along the adjusting screw can be converted into a pivoting movement of the support element. The advantage of an adjusting screw as an adjusting element is that the position of the support element can be adjusted continuously and therefore very precisely. In addition, an adjusting screw can be easily operated. The connection of the adjusting screw with the support element is made via the joint of the fastening device.

The joint of the fastening device preferably has a pivot axis which is parallel to the base plate. In addition, the pivot axis lies parallel to the apex of the angular support element and parallel to the edge of the base area over which the support element projects at least temporarily. The pivot axis is preferably also displaceable with respect to the support element. In particular, the pivot axis can be moved towards and away from the base plate. The leg, which is held displaceably on the base plate and on which the joint preferably engages, is referred to as the first leg. The adjusting screw is connected to this first leg of the support element via the joint. By engaging the joint on one leg, the other leg can be moved. The free end of the first leg is also at least temporarily guided on the base plate.

With this configuration of the fastening device, on the one hand, the movable guidance of the free end of the first leg, on which the joint engages, enables this free end of the support element to be displaced parallel to the base plate. As a result, the position of the free end of the second leg with respect to the base plate can also be changed. As a result, the support element can in particular be shifted into the base plate to such an extent that it no longer protrudes or only protrudes slightly beyond the edge of the base plate. When moving the free end, the support element can also be pivoted around the joint. When the support element is displaced, it can thus perform either a purely translational movement or a translatory and rotational movement. In at least one state of the fastening device, the free end of the first leg is held on the base plate in such a way that it is not in can move the direction in which the majority of the support element lies. If the majority of the support element lies above the base plate, the free end is therefore held in such a way that it cannot move upwards.

On the other hand, this configuration of the fastening device and in particular the angular shape of the support element and the alignment of the pivot axis of the joint allow the support element to pivot with respect to the base plate, by means of which the second leg is moved downwards.

According to one embodiment, the displaceable holder of the support element comprises a guide geometry in the base plate. This guide geometry can represent one or more slots or elongated holes in the base plate. A part of the free end of the first leg of the support element can protrude through this guide geometry. Alternatively, a fixing screw can be guided through the guide geometry, which can be moved in one state in the guide geometry and can be fixed in a further state and thus holds the free end of the first leg. In addition or as an alternative to the guide geometry, the displaceable holder can comprise a spring element. The spring element is preferably a tension spring. The tension spring is preferably provided between the base plate and the support element in such a way that it pulls the support element into the pre-fixing position.

In that the ventilation device has at least one fastening device for fastening a ventilation device in a mounting wall, which has a base plate and a support element which is arranged at least partially on one side of the base plate and which, due to the mounting according to the invention, is in a pre-fixing position, a mounting position and an insertion position can be brought about, a number of advantages can be achieved.

The base plate of the fastening device can be fastened to the housing of the ventilation device. However, it is also within the scope of the invention that the base plate is formed by part of a housing wall, in particular the top of the housing of the ventilation device. The fastening device is arranged on the ventilation device, in particular on the housing, in such a way that the support element protrudes over the edge of the housing, in particular the upper side of the housing, in the pre-fixing position and the assembly position.

If the base plate of the fastening device is a separate component from the housing of the ventilation device, the fastening device can simply be retrofitted to a ventilation device. In particular, the base plate can be fastened, in particular screwed, to the top of the housing of the ventilation device, which is also referred to as a cover plate. The base plate can preferably be attached to the cover plate from below. The further components of the fastening device can either be placed onto the cover plate from above or a passage opening for the further components, such as in particular the support element, can be provided through which the components can be passed from below.

According to one embodiment, the housing of the ventilation device has a suction opening on its underside. The suction opening can form the entire underside of a box-shaped housing. However, it is also within the scope of the invention that the suction opening is located only or at least partially in one or more side walls of the housing. In this embodiment too, the or the suction openings are located in the lower region of the housing.

The at least one fastening device is preferably on the top of the housing, which is particularly preferably formed by a cover plate, in the area of the The edge of the cover plate is arranged so that the support element of the fastening device protrudes in at least the assembly position and the pre-fixing position over the edge of the cover plate and does not protrude in the insertion position over the edge of the cover plate. As a result, the introduction of the housing of the ventilation device into the suction opening is not hindered by fixed parts of the fastening device.

Particularly preferably, the housing of the ventilation device has on the underside a projection which protrudes outward at least in some areas. Alternatively, the projection can also be provided offset upwards at a distance from the underside of the housing. By providing a projection, when the fastening device is actuated, a clamping force can be exerted on the mounting wall and the holding of the ventilation device in the mounting wall can thus be improved.

According to one embodiment, the housing has a rectangular shape and at least one fastening device is arranged in the area of each of the four corners. This ensures that the ventilation device is held evenly.

The fastening devices are preferably arranged in such a way that in each case two support elements of the fastening devices protrude at least temporarily over a common edge of the housing.

According to one embodiment of the ventilation device in which the first leg is connected to the adjusting screw via the joint, the second leg has a length which is greater than the difference between the height of the housing of the ventilation device and the wall thickness of the mounting wall. Since the second leg has such a length, the housing of the ventilation device can be pulled as far up as possible into the recess of the mounting wall when the fastening device is actuated. In this way, a sufficient clamping force can be achieved with the preferably provided projection on the housing of the ventilation device.

According to one embodiment, the joint via which the set screw is connected to the leg of the support element comprises a bolt which extends perpendicular to the axis of the set screw and engages in at least one elongated hole in the first leg of the support element. With this embodiment, a joint can be formed in a simple manner and at the same time a displacement of the support element parallel to the base plate is made possible. The support element is arranged so that the elongated hole is inclined to the axis of the adjusting screw. As a result, the bolt can be moved when the adjusting screw is turned and a force can be exerted on the support element via the elongated hole. In particular, the first leg can be drawn towards the base plate by moving the bolt onto the base plate. Since the free end of the first leg is preferably held on the base plate in such a way that it cannot move upwards, this movement also causes the second leg, which protrudes over the edge of the housing, to be pivoted downwards and can exert a force on the Exercise the top of the mounting wall that lifts the vent. As soon as a projection provided on the housing comes into contact with the underside of the mounting wall, the force applied causes a clamping.

According to one embodiment, the support element has a handle on the free end of the leg to which the adjusting screw is connected via the joint. The support element is held displaceably on the base plate via this handle. In particular, the handle can extend through the base plate. By moving the handle, the support element can be moved from below on the base plate. The handle is preferably guided in guide gaps in the base plate. In this way, in particular, the support element can be withdrawn from the pre-fixing position when the ventilation device is to be dismantled.

According to an alternative embodiment to the design of the joint by bolt and elongated hole, the joint via which the adjusting screw is connected to the leg of the support element comprises at least two articulated arms, and one of the articulated arms is slidably mounted on the adjusting screw.

In this embodiment, an articulated foot is preferably provided at the free end of the first leg, which is connected to the adjusting screw, and is held displaceably on the base plate. In this way the support element can be moved. The free end of the leg can particularly preferably be fixed in at least two positions. The fixation is preferably carried out via a fixing screw by means of which the articulated foot can be attached to the base plate. The two positions can be defined by the ends of an elongated hole in the base plate.

• Figur 1: eine Prinzipskizze einer Lüftungsvorrichtung in einem in einer Montagewand montierten Zustand;
• Figur 2: eine schematische perspektivische Draufsicht auf eine erste Ausführungsform einer erfindungsgemäßen Lüftungsvorrichtung;
• Figur 3: eine schematische Perspektivansicht der Ausführungsform der Befestigungsvorrichtung der erfindungsgemäßen Lüftungsvorrichtung gemäß Figur 2;
• Figur 4: eine schematische Unteransicht eines Teils der Lüftervorrichtung nach Figur 2;
• Figuren 5 bis 8: schematische Schnittansichten der ersten Ausführungsform der Lüftungsvorrichtung bei der Montage;
• Figur 9: eine schematische perspektivische Draufsicht auf eine zweite Ausführungsform einer erfindungsgemäßen Lüftungsvorrichtung;
• Figur 10: eine schematische Perspektivansicht der Ausführungsform der Befestigungsvorrichtung der erfindungsgemäßen Lüftungsvorrichtung gemäß Figur 9;
• Figur 11: eine schematische Seitenansicht der Ausführungsform der Befestigungsvorrichtung der erfindungsgemäßen Lüftungsvorrichtung gemäß Figur 10;
• Figuren 12 bis 18: schematische Seitenansichten der zweiten Ausführungsform der Lüftungsvorrichtung bei der Montage; und
• Figur 19: eine schematische perspektivische Unteransicht eines Teils der zweiten Ausführungsform der Lüftungsvorrichtung nach Figur 9.

The present invention is explained again in more detail below with reference to the accompanying figures. Show it:

• Figure 1 : a schematic diagram of a ventilation device in a mounted state in a mounting wall;
• Figure 2 : a schematic perspective top view of a first embodiment of a ventilation device according to the invention;
• Figure 3 : a schematic perspective view of the embodiment of the fastening device of the ventilation device according to the invention according to FIG Figure 2 ;
• Figure 4 : a schematic bottom view of part of the fan device according to FIG Figure 2 ;
• Figures 5 to 8 : schematic sectional views of the first embodiment of the ventilation device during assembly;
• Figure 9 : a schematic perspective top view of a second embodiment of a ventilation device according to the invention;
• Figure 10 : a schematic perspective view of the embodiment of the fastening device of the ventilation device according to the invention according to FIG Figure 9 ;
• Figure 11 : a schematic side view of the embodiment of the fastening device of the ventilation device according to the invention according to FIG Figure 10 ;
• Figures 12 to 18 : schematic side views of the second embodiment of the ventilation device during assembly; and
• Figure 19 : a schematic perspective view from below of part of the second embodiment of the ventilation device according to FIG Figure 9 .

In Figure 1 a schematic diagram of a ventilation device 1 is shown, which in particular represents an integrated ceiling ventilation. In the embodiment shown, the ventilation device 1 has a housing 10. A projection 13 is formed on the lower edge of the housing 10 and extends outward from the side walls 12 of the housing 10. The projection 13 preferably extends over the entire circumference of the housing 10.

The ventilation device 1 and in particular the housing 10 is inserted from below into the mounting wall, which is referred to below as the ceiling D, into an installation opening M, which can also be referred to as a cutout. The ventilation device 1 is pushed into the assembly opening M until the projection 13 rests on the underside of the ceiling D. In this in Figure 1 The ventilation device 1 must be attached to the ceiling D in the position shown.

In Figure 2 is schematically shown a perspective top view of a first embodiment of a ventilation device 1 according to the invention. In the Figure 2 only the housing 10 of the ventilation device 1 is shown. In the housing 10, further components of the ventilation device 1, such as filters, can be received, which are in the Figure 2 are not shown. The housing 10 has a cover plate 11 which forms the top of the housing 10. A recess 110 is made in the cover plate 11, into which further components, such as a fan (not shown), can be inserted. Four side walls 12 of the housing 10 extend downward from the cover plate 11. At the lower edge of each of the side walls 12, a projection 13 is provided, which extends outward from the respective side wall 12 extends. The underside of the housing 10 is open and can be used, for example, to accommodate filters (not shown).

Fastening devices 2 are arranged on the cover plate 11. In the Figure 2 only one fastening device 2 is shown. However, four fastening devices 2 are preferably provided. The fastening device 2 shown is arranged in the corner region of the cover plate 11 and in particular fastened to it. The other fastening devices, not shown, are fastened in the further three corner regions of the cover plate 11.

The structure of the fastening device 2 will now be described with reference to FIG Figures 3 and 4 described in more detail. Figure 3 shows a schematic perspective view of the embodiment of the fastening device 2 used according to the invention of the first embodiment of the ventilation device 1 according to FIG Figure 2 . Figure 4 FIG. 4 shows a schematic bottom view of part of the first embodiment of the fan device 1.

How out Figure 3 results, the fastening device 2 in this embodiment consists of a support element 21, which can also be referred to as a clamping piece, a joint 23, an adjusting screw 22 and a base plate 20. For mounting on the housing 10, the base plate 20 is attached to the housing 10 from the inside the cover plate 11 screwed. This is in Figure 4 shown schematically.

On this base plate 20, the support element 21 is then placed from above onto the housing 10 and in particular onto the cover plate 11. An adjusting screw 22 is guided through the base plate 20 and extends upward through the cover plate 11 of the housing 10. The support element 21 is connected to this adjusting screw 22. The support element 21 has an angular shape in which two legs 210 and 211 extend from the angular apex W. Leg 210 is also referred to below as the first leg. In the embodiment shown, the first leg 210 is formed by a U-profile. The joint 23 is attached to the first leg 210. In the embodiment shown, the joint 23 consists of two joint arms 231, 232. One end of a joint arm 231 is pivotably attached to the first leg 210. In the illustrated embodiment, the Articulated arm 231 attached to lugs on leg 210. A passage opening is formed between the tabs and extends upward from the tabs. The other end of the articulated arm 231 is pivotably connected to the second articulated arm 232 via the actual joint 23. A threaded hole through which the adjusting screw 22 is guided is made in the second articulated arm 232.

In the embodiment shown, the second leg 211 of the support element 12 is at an angle of less than 90 °, in particular 60 °, to the first leg 210. The second leg 211 is formed from two parallel struts, each of which represents an L-profile. However, it is also within the scope of the invention that the second leg 211 also represents a U-profile or some other shape. At the free end of the second leg 211 the profile material is bent over and thus closes the L-profile.

The free end of the first leg 210 is pivotably connected to an articulated foot 24. The articulated foot 24 has a U-shape. A threaded bore 240 for a fixing screw (not shown) is made in the bottom of the articulated foot 24.

How out Figure 4 results, the base plate 20 has a passage opening 200 for the adjusting screw 22. In addition, the base plate has a guide gap 201 which, in the embodiment shown, has a keyhole shape with an elongated hole. The guide gap 201 can also be referred to as guide geometry. The fixing screw (not shown) can be guided through this guide gap 201 and is then screwed through the threaded hole 240 of the articulated foot 24. The screw head of the fixing screw is preferably as large as the round opening of the keyhole-shaped guide gap 201.

After the base plate 20 has been screwed to the inside of the cover plate 11, the support element 21 has been placed on the cover plate 11, the adjusting screw 22 has been passed through the passage opening 200 of the base plate 20 and screwed into a threaded hole in the articulated arm 232 and the fixing screw from below is inserted through the guide gap 201 and screwed into the threaded hole 240 of the articulated foot 24, the ventilation device 1 can be mounted, that is, in a room ceiling D, be fixed.

Assembly will now be carried out with reference to the Figures 5 to 8 described in more detail.

Before the housing 10 is inserted into the assembly opening M, the articulated foot 24 is pushed as close as possible to the adjusting screw 22. For this purpose, the fixing screw is loosened so that it can be moved in the guide gap 201. In this position, the fixing screw is then tightened again. In this position, which in Figure 5 is shown, the free end of the second leg 211 of the support element 21, which can also be referred to as the front edge, offset by a certain amount X from the lateral edge of the cover plate 11 inwardly above the cover plate 11. This position is also called the insertion position designated. The housing 10 can thus be pushed into the assembly opening M without the support elements 21 hindering this insertion. As soon as the housing 10 is in the assembly opening M, the fixing screw can be loosened and pushed along the keyhole into the locking point, that is to say the round opening of the guide gap 201. The fixing screw must now be fixed again. By moving the fixing screw, the articulated foot 24 and thus the free end of the first leg 210 of the support element 21 also move away from the adjusting screw 22. As a result, and because the first leg 210 is connected to the adjusting screw 22 via the joint 23, the support element 21 swings out. This is in Figure 6 shown. In this pivoted-out state, the second leg 211 of the support element 21 projects by an amount X beyond the edge of the cover plate 11 of the housing 10.

In this position, the housing 10 can now be released because it is pre-fixed by the protruding support elements 21. The support elements 21 engage the upper side of the ceiling D and the ventilation device 1 can therefore no longer fall out of the assembly opening M. The pre-fixing position of the support element is in Figure 7 shown schematically.

If the adjusting screw 22 is now turned to the right from the inside of the housing 11, the articulated arm 232 and thus the joint 23 moves downward along the adjusting screw 22. Since the joint 23 is connected to the support element 21 on the first leg 210, the support element 21 is pivoted by the movement of the joint arm 232 and the joint 23. In particular, the support element 21 is pivoted so that the free end of the second leg 211 is shifted downwards. Since this free end rests on the top of the ceiling D, the housing 10 is pulled upwards. As soon as the projection 13 rests on the housing 10 on the underside of the ceiling D, the housing 10 is thus held securely on the ceiling D by clamping. This state in which the adjusting element 21 is in the assembly position is shown in FIG Figure 8 shown. As can be seen from the Figure 8 results, in the embodiment shown, in the assembled state of the ventilation device 1, the adjusting screw 22 protrudes through the first leg 210 of the support element 21. In particular, the adjusting screw 22 protrudes through the opening between the brackets to which the first articulated arm 231 is attached. However, by means of a different dimensioning or shape of the support element 21, the fastening device 2 can also be designed in such a way that the adjusting screw 22 does not protrude through the leg 210 even when the ventilation device 1 is in the assembled state.

To dismantle the ventilation device 1, the aforementioned steps are carried out in reverse order. In particular, the adjusting screw 22 is turned to the left. This pushes the second articulated arm 232 upwards. An upper stop (not shown) can be provided on the adjusting screw 22, which allows the articulated arm 232 to be displaced beyond the position of the articulated arm 232 which it assumes in the pre-fixing position of the support element 21 and which is shown in FIG Figure 7 shown is prevented. In this position, the fixing screw can then be loosened in order to be able to be guided in the guide gap 201. The housing 10 can then be made from the in Figure 7 position shown are lifted up by the user and the support element 21 are thereby relieved. By moving the articulated foot 24 and thus the free end of the first leg 210 of the support element 21 in the direction of the adjusting screw 22 by means of the fixing screw, the support element 21 is pivoted so far that it no longer protrudes beyond the edge of the housing 10, as in Figure 5 shown. In this position of the fastening devices 2 on the housing 10, the housing 10 can then be removed from the assembly opening M.

In the Figure 9 a schematic perspective top view of a second embodiment of a ventilation device 1 according to the invention is shown. In this embodiment too, the ventilation device 1 comprises a housing 10 on which in the embodiment shown a fan box 14 is attached. The housing 10 has a cover plate 11, from the edges of which side walls 12 extend downward. The side walls 12 have an outwardly protruding projection on their underside (see Figure 12 ) on. In the corner areas of the cover plate 11, openings are provided, through each of which a fastening device 2 protrudes. The fastening devices 2 are attached to the housing 10 in such a way that their support elements 21 protrude in at least one position over the edge of the cover plate 11 and thus the edge of the housing 10. In the embodiment shown, the fastening devices 2 are arranged in such a way that two support elements 2 each protrude beyond a common edge of the housing 10.

The structure and function of the fastening devices 2 will now be described with reference to FIGS Figures 10 to 19 described in more detail. In Figure 10 a schematic perspective view of the embodiment of the fastening device 2 used according to the invention of the second embodiment of the ventilation device 1 is shown. The fastening device 2 consists of a base plate 20, a support element 21, a joint 23 and an adjusting screw 22. A passage opening 200 for the adjusting screw 22 is provided in the base plate 20 (see also FIG Figure 19 ). Two guide gaps 201 are introduced adjacent to the passage opening 200 and extend parallel to one another.

In the second embodiment, the support element 21 has a first leg 210 and a second leg 211, which extend from the angle vertex W. In this embodiment, the legs 210, 211 are at right angles to one another. The first leg 210 has a downwardly open U-shape. In the bottom of the U-shape and in the legs of the U-shape, an elongated hole is made, which extends in the longitudinal direction of the first leg 210. As in the first embodiment, the second leg 211 is formed by two struts which have an L shape and run parallel to one another in the longitudinal direction of the second leg 211. The material is bevelled at the free ends of the struts and thus closes the struts at their free ends. At the free end of the first leg 210, a tab 213 is formed which extends parallel to the second leg 211 from the underside of the first leg 210. In addition, a handle 27 is formed on the free end of the first leg 210 perpendicular to the tabs 213. In the In the illustrated embodiment, the material of the bottom of the U-shaped first leg 210 is bent downwards. The lower end of this bend forms the handle 27, which comprises two lugs which engage in the guide gaps 201 of the base plate 20. As in Figure 19 As shown, the lugs of the handle 27 engage behind the base plate 20.

The joint 23 is formed by a bolt 233, which is rotatably held on the adjusting screw 22, and an elongated hole 212 in the support element 21. In particular, the joint 23 in the second embodiment of the fastening device 2 is formed by a bolt 233 and the elongated holes 212 in the lateral legs of the U-shape of the first leg 210 of the support element 21. The bolt 233 is screwed onto the adjusting screw 22 and extends perpendicular to the longitudinal axis of the adjusting screw 22. The length of the bolt 233 is dimensioned so that the ends of the bolt 233 through the elongated holes 212 in the side legs of the U-shape of the first Legs 210 of the support element 21 protrude. An upper stop 234, which limits the upward movement of the bolt 233, is preferably provided on the adjusting screw 22. A lower stop on the base plate 20 can also be provided on the adjusting screw 22. Finally, a tension spring 26 is provided between the support element 21 and the base plate 20. The tension spring 26 engages at the free end of the first leg 210, preferably at the top of the bend through which the handle 27 is formed, and engages the base plate 20 in the vicinity of the passage opening 200 for the adjusting screw 22. The support element 21 is preferably oriented in such a way that the first leg 210 is not parallel to the base plate 20, but rather rises from the free end at which it is slidably held on the base plate 20 towards the second leg 211.

The function of the fastening device 2 and the assembly of the ventilation device 1 will now be described with reference to FIG Figures 12 to 19 explained.

In the second embodiment, too, the ventilation device 1 with the fastening devices 2 is introduced from below through into the assembly opening M in a room ceiling D. In this step, which is in Figure 12 As shown, the support elements 21 of the fastening device 2 still protrude laterally beyond the housing 10 of the ventilation device 1. As soon as the support element 21 strikes the cutout edge of the mounting opening M, the support element 21 moves in the direction of the center of the housing 10 a. This state in which the support element 21 is in the insertion position is shown in FIG Figure 13 shown. The support element 21 is displaced here against the spring force of the tension spring 26 relative to the base plate 22. The bolt 233 of the joint 23 is displaced in the elongated holes 212 on the side of the first leg 210 of the support element 21. The support element 21 moves in the direction of the center of the housing 10 until the mounting opening M is overcome. Then springs, as in Figure 14 shown, the support element 21 is back in the starting position by means of the tension spring 26. The support element 21 is supported on the upper side of the ceiling D. In this state, the support element 21 is therefore in the pre-fixing position and the ventilation device 1 is therefore pre-fixed. The set screw 22 is then tightened on each of the four fastening devices 2. This rotates, as in the Figures 15 and 16 shown, the support element 21 over the bolt 233 and the slot guide 212 downwards. Since the bolt 233 protrudes through the elongated holes 212 and the elongated holes 212 are inclined, turning the adjusting screw 22 moves the bolt 233 downwards and thus moves the free end of the second leg 211 of the support element 21 downwards. The free end of the second leg 211 presses on the top of the ceiling D and thereby lifts the housing 10 until the projection 13 of the housing 10 rests on the underside of the ceiling D. The ventilation device 1 is thus tensioned against the ceiling D, that is to say is firmly braced against it.

To remove the ventilation device 1 from the ceiling D again, the adjusting screw 22 is first loosened again from the inside until the bolt 233 reaches the upper stop 234 on the adjusting screw 22. These steps are in the Figures 17 and 18 shown. In this state, the user can support the housing 10 from below and lift it slightly and operate the handle 27 of the support element 21 from the inside. In particular, the lugs of the handle 27, which are shown in Figure 19 are shown pushed in the direction away from the set screw 22. As a result, the support element 21 is drawn in against the spring force and the support element 21 no longer protrudes beyond the edge of the housing 10. In this state, the housing 10 can then be removed from the assembly opening M. Although not shown, a catch can be provided on the guide gaps 201, to which the handle 27 of the support element 21 can be fixed in the retracted position.

The present invention thus creates a simplified ceiling installation of ventilation devices, in particular so-called integrated ceiling ventilation. Installation by the user is associated with the least possible effort and load. In addition, the fastening device used according to the invention, which can also be referred to as a suspension, ensures a secure and firm hold of the ventilation device, which is also referred to as a device, in the ceiling. Furthermore, easier dismantling of the ventilation device from the ceiling is made possible. Finally, the present invention enables the ventilation device to be installed with different wall thicknesses. For example, the device can be installed in a ceiling with a wall thickness of up to 50 mm.

In comparison to ventilation devices, which are fastened via a separate suspension frame that must be introduced into the assembly opening, the assembly according to the invention is considerably simplified. Compared to devices on which snap-in hooks protrude, disassembly is easier with the present invention.

The present invention has a number of advantages. In particular, no additional scaffolding is required that would have to be built into the ceiling beforehand. The ventilation device can be connected to the fastening device in a simple manner. The device can only be pre-fixed in a section of the ceiling. This makes assembly easier, as the device does not have to be held permanently. The ventilation device can be installed with a wall thickness of the ceiling of 16 mm to 55 mm. The assembly is faster. In addition, even bracing in the assembly opening is possible. Finally, a secure and secure fit in the ceiling is made possible.

The present invention makes it possible that the integrated ceiling ventilation is first pre-fixed in the ceiling and the user or customer service can now hang up the device freely, without additional loading. The device does not have to be held by a second person at all times. With this concept, a device can also be installed with a wall thickness between 16-55 mm. Another advantage is that a customer who already has a suspended ceiling can also carry out the installation blind, since the installation always takes place from below. In addition, the dismantling takes place here facilitated, because here only the screw has to be turned and the device moves downwards. It remains pre-fixed until, for example, a fixing screw or a handle is moved again.

Reference number

1

Ventilation device

10

casing

11

Cover plate

110

Recess

12

side walls

13

head Start

14th

Fan box

2

Fastening device

20th

Base plate

200

Passage opening

201

Leadership gap

21st

Support element

210

first leg

211

second leg

212

Long hole

213

Guide tab

22nd

Adjusting screw

23

joint

230

Swivel axis

231

Articulated arm

232

Articulated arm

233

bolt

234

attack

24

Articulated foot

240

Threaded hole

26th

Tension spring

27

Handle

D.

ceiling

M.

Assembly opening

W.

Angled vertex

Claims (13)

1. Ventilation device with a housing (10), the top side of which is formed by a cover plate (11), and with at least one fastening device for fastening the ventilation device (1) in an assembly wall (M), wherein at least one fastening device is arranged on the cover plate and wherein the fastening device has a base plate (20) and a support element (21) arranged at least partially above the base plate (20) in a mobile manner, wherein the base plate (20) of the fastening device is fastened to the top side of the housing of the ventilation device (1) or is formed by part of the top side of the housing of the ventilation device (1), wherein the support element (21) has an angled shape with a first and a second limb (210, 211), characterised in that the second limb (211) is directed downwards in relation to the first limb (210), the support element (21) is retained on the first limb (210) such that it can be displaced on the base plate (20) and the support element (21) can be pivoted in relation to the base plate (20), such that the support element (21) can be moved between a prefixed position, in which the second limb (211) protrudes beyond the edge of the base plate (20) by an overhang, an assembly position, in which the second limb (211) is pivoted downwards in relation to the prefixed position, and an insertion position, in which the second limb (211) protrudes beyond the edge of the base plate (20) by an overhang which is smaller than the overhang in the prefixed position.
2. Ventilation device according to claim 1, characterised in that the fastening device (2) has an adjusting screw (22), the adjusting screw (22) extends through the base plate (20), the adjusting screw (22) is connected to the first limb (210) of the support element (21) via a joint (23) and, by rotating the adjusting screw (22), the support element (21) is pivoted about the joint (23) between the prefixed position and the assembly position.
3. Ventilation device according to claim 2, characterised in that the joint (23) has a pivot axis, which lies parallel to the base plate (20), parallel to the angular vertex (W) of the angular support element (21) and parallel to the edge, beyond which the support element (21) protrudes, and the pivot axis can be displaced in relation to the support element (21).
4. Ventilation device according to one of claims 1 to 3, characterised in that the displaceable retention of the first limb (210) of the support element (21) comprises a spring element (26), a guide geometry (201) in the base plate and/or a fixing screw.
5. Ventilation device according to one of claims 1 to 4, characterised in that the at least one fastening device (2) on the cover plate (11) of the housing (10) is arranged in the region of the corner of the cover plate (11), such that the support element (21) of the fastening device (2) protrudes beyond the edge of the cover plate (11) in at least the assembly position and the prefixed position and does not protrude beyond the edge of the cover plate (11) in the insertion position.
6. Ventilation device according to one of claims 1 to 5, characterised in that the housing (10) has an outwardly protruding projection (13) on the bottom side, at least in regions.
7. Ventilation device according to one of claims 1 to 6, characterised in that the housing (10) has a rectangular shape and at least one fastening device (2) is arranged in the region of each of the four corners, such that in each case two support elements (21) of the fastening device (2) protrude beyond a common edge of the housing (10), at least for a time.
8. Ventilation device according to one of claims 1 to 7, wherein the first limb is connected to the adjusting screw (22) via the joint (23), characterised in that the second limb (211) has a length that is greater than the difference between the height of the housing (10) of the ventilation device (1) and the wall thickness of the assembly wall (M).
9. Ventilation device according to one of claims 1 to 8, characterised in that the joint (23), via which the adjusting screw (22) is connected to the first limb (210) of the support element (21), comprises a bolt (233) which extends perpendicularly to the axis of the adjusting screw (22) and engages into at least one elongated hole (212) in the first limb (210) of the support element (21).
10. Ventilation device according to one of claims 1 to 9, characterised in that the support element (21), at the free end of the first limb (210) to which the adjusting screw (22) is connected via the joint (23), has a grip (27), via which the support element (21) is retained on the base plate (20) such that it can be displaced and the grip (27) extends through the base plate (20).
11. Ventilation device according to one of claims 1 to 8, characterised in that the joint (23), via which the adjusting screw (22) is connected to the first limb (210) of the support element (21), comprises at least two articulated arms (231, 232), and one of the articulated arms (232) is mounted such that it can be displaced on the adjusting screw (22).
12. Ventilation device according to claim 11, characterised in that an articulated foot (24), which is retained on the base plate (20) such that it can be displaced, is provided at the free end of the first limb (210), which is connected to the adjusting screw (22).
13. Ventilation device according to one of claims 11 or 12, characterised in that the free end of the first limb (210) can be fixed on the base plate (20) in at least two positions, and the fixing preferably takes place via a fixing screw.

Images