DE29918293U1 - Ventilation device for rooms - Google Patents

Description

R245a

Riegelhof & Gärtner oHG, Am Rotböll 15 - 19,
64331 Weiterstadt-Gräfenhausen

Ventilation and/or exhaust device fm

The invention relates to a device for ventilating and/or de-ventilating rooms in buildings, consisting of a thin-walled shaft which can be inserted into a wall and which is provided with a flange at one end and carries a ventilation grille at its other end.

For the ventilation and/or dehumidification of rooms in buildings, devices are used which consist of a thin-walled shaft which is provided with a flange at one end and has a ventilation grille at the other end. The ventilation grille can consist of a frame in which there are slats or the like. This device is inserted into a wall which can consist of masonry, insulation or the like. The length of the shaft is designed depending on the thickness of the wall, which means that there are devices which have different shaft lengths. In walls which deviate from a standard in terms of thickness, the devices cannot be used or can only be used after complicated modifications.

The invention is therefore based on the object of creating a device for ventilating and/or de-ventilating rooms in buildings, which can be easily adapted to different wall thicknesses.

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To achieve this object, according to the invention, in a device of the type described at the outset, it is proposed that the shaft is formed from at least two shaft parts which can be telescoped relative to one another and limited in their sliding position by stops.

By designing the device in this way, the distance between the shaft flange and the ventilation grille can be easily changed. This makes it possible to adapt the device to different wall thicknesses and to reduce the storage of devices that normally have different shaft lengths.

Further features of a device according to the invention are disclosed in claims 2 to 6.

The invention is explained in more detail below with reference to an embodiment shown in a drawing.

In this drawing, a wall 1 is shown in section, which is made, for example, of an insulating material. In this wall there is an opening 2, which has, for example, a rectangular cross-section. This opening 2 is used for the ventilation and/or de-aeration of a room in a building. In order to give this opening 2 a visually attractive appearance, it is provided on the outside of the wall 1 with a ventilation grille 3, which is held in the opening via a so-called shaft 4. In the embodiment shown, this shaft 4 consists of three shaft parts 4a, 4b, 4c that can be moved telescopically against each other. The shaft part 4a has a

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Flange 5, which can be connected to the ventilation grille 3. The shaft part 4c is also provided with a flange 6, which rests on the inside or rear of the wall 1. By appropriately moving the shaft parts 4a, 4b, 4c, the device or its shaft 4 can be easily adapted to the thickness of the wall 1.

In order to prevent the shaft parts 4a, 4b, 4c, which can be moved telescopically against each other, from falling apart, they are provided with stops 7a, 7b, whereby the stops 7a are arranged on the inside of the outer shaft parts 4b, 4c and the stops 7b are arranged on the outside of the inner shaft parts 4a, 4b. These stops 7a, 7b can be designed differently and formed in one piece with the shaft parts 4a, 4b, 4c.

According to the illustration in Figure 2, the stops 7a, 7b in the case of shaft parts 4a, 4b, 4c made of sheet metal consist of projections that were produced in a punching process. These stops 7a, 7b are provided in multiples, preferably on the top and bottom of the shaft 4, and are aligned with one another. Only this aligned arrangement ensures that the stops 7a, 7b work together when the shaft 4 is pulled apart and thus limit the maximum length of the shaft 4. However, these stops 7a, 7b also ensure that the shaft parts 4a, 4b, 4c of the shaft 4 cannot accidentally come apart and get lost.

In the embodiment shown, the ventilation grille 3 has slats 10 directed inwards and upwards, which largely

ensure that rainwater does not penetrate but flows back. In the event that rainwater does penetrate, it is drained off externally via guide devices 8, 9.

In a modification of the embodiment described, it is possible to design and arrange the stops 7a, 7b differently. The ventilation grille 3 can have a different, largely arbitrary shape and design. The slats 10 can either be designed differently or even omitted, although ventilation openings are always present.

Claims (6)

1. Device for the ventilation and/or de-aeration of rooms in buildings, consisting of a thin-walled shaft which can be inserted into a wall and which is provided with a flange at one end and carries a ventilation grille at its other end, characterized in that the shaft ( 4 ) is formed from at least two shaft parts ( 4a , 4b , 4c ) which can be displaced telescopically against one another and can be limited in their sliding position by stops ( 7a , 7b ). 2. Device according to claim 1, characterized in that the stops ( 7 a, 7 b) are designed as locking lugs. 3. Device according to claim 1 or 2, characterized in that the stops ( 7 a, 7 b) are formed integrally with the shaft parts ( 4 a, 4 b, 4 c). 4. Device according to at least one of claims 1 to 3, characterized in that the shaft parts ( 4 a, 4 b, 4 c) consist of sheet metal and the stops ( 7 a, 7 b) are formed by punchings. 5. Device according to at least one of claims 1 to 4, characterized in that guide devices ( 8 , 9 ) are assigned in the part ( 4a ) of the shaft ( 4 ) facing the ventilation grille ( 3 ). 6. Device according to at least one of claims 1 to 5, characterized in that the ventilation grille ( 3 ) has inwardly and upwardly directed slats ( 10 ).