EP3106759A1 - Fastening device for an extractor hood, extractor hood with attachment and suspension system - Google Patents

Abstract

The present invention relates to a fastening device for an extractor hood (1), which is characterized in that the fastening device (3) has a housing (30), at least one pivot arm (31) and at least one compression spring (33), the pivot arm (31). on the housing (30) about a pivot axis (D) is movably held and a latching nose (310) and the compression spring (33) perpendicular to the pivot axis (d) and on the inside of the pivot arm (31) in the region of the latching lug ( 310) to the pivot axis (D) offset offset downwards. Furthermore, the invention relates to an extractor hood (1) with such a fastening device (3) and a suspension system with such a fastening device (3).

Description

The present invention relates to a fastening device for an extractor hood, a suspension system and an extractor hood with at least one fastening device.

For attachment of cooker hoods, especially in furniture, such as overhead cabinets of kitchenettes, it is known to provide the extractor hood a fastening device comprising a biased by a spring plate which protrudes from the sides of the hood. Here, the sheet is attached to the upper edge of the hood and the lower end of the sheet protrudes beyond the side of the hood to the outside. On the insides of the walls of the cabinet brackets are fixed, which are directed into the interior of the cabinet and provide a support surface for the lower edge of the sheet. If the cooker hood is pushed from below into the wall unit, the holder hits the sheet metal and pushes it back. If the holder is guided past the metal sheet, the metal sheet is withdrawn to the starting position. The flat-screen hood can now be drained and hangs over the bracket and the sheet metal in the wall unit, in particular, the lower edge of the sheet on the support surface of the bracket. By an additional screw, the sheet can be reset manually, so that the flat-panel hood can be removed again. There are also known fastening devices in which on the holder a pin, in particular metal pin is used, which is perpendicular to the holder. Due to the length of the pin different wall thicknesses can be compensated.

A disadvantage of known fastening devices is that the vertical position of the extractor hood during insertion is not set exactly. Thus, for example, in the case of an extractor hood, which is a flat-screen hood, the screen or the drawer of the extractor hood or a rail for the screen, which are intended to rest against the lower edge of the cabinet, can be offset down to the lower edge of the cabinet and so a gap forms. In order to eliminate this gap, it is known to provide adjusting devices on the extractor hood and in particular on the fastening device. The adjustment is done by a screwdriver and can be very expensive under certain circumstances.

The object of the present invention is thus to provide a solution by means of which an extractor hood can be easily introduced and held in a desired position in a piece of furniture, in particular a wall unit, in a simple and reliable manner.

The invention is based on the finding that this object can be achieved by using a fastening device with a pivoting arm with suitable geometry and suitable arrangement.

According to a first aspect, the invention therefore relates to a fastening device for an extractor hood. The fastening device is characterized in that the fastening device comprises a housing, at least one pivot arm and at least one compression spring, the pivot arm is movably supported on the housing about a pivot axis and comprises a detent and the compression spring is perpendicular to the pivot axis and on the inside of the pivot arm offset offset in the region of the locking lug to the pivot axis down.

As a fastening device according to the invention the part of a suspension system understood that is provided on the hood and can interact with a geometry of the cabinet wall. In particular, a device is referred to as a fastening device for an extractor hood, by means of which the extractor hood can be detachably fastened to a wall unit or a wall bracket provided thereon. As a releasable attachment in particular a fixture is called, which can be solved without tools or with little tooling. Particularly preferably, the fastening device is a device that allows a prefixing of the hood in the furniture without tools. As extractor hood in particular a flat screen hood is called. The furniture is referred to below as a cabinet, wall unit or wall unit.

According to the invention, the fastening device has a housing, at least one swivel arm and at least one compression spring. The housing and the swivel arm are preferably plastic components. The housing serves, in particular, for the mounting of the swivel arm and the attachment to the extractor hood, in particular to the extractor hood of the extractor hood. Preferably, the housing is open towards the front thereof. As a pivoting arm, a component is referred to, which is movable about a pivot axis. Preferably, the pivoting movement of the pivot arm is limited by latching arms which engage with a counter-geometry on the housing. The swivel arm is held according to the invention on the housing and is pivotally mounted relative to the housing about a pivot axis. The pivot axis, which is also referred to as a rotation axis, is preferably in or above the top of the housing. Particularly preferably, the pivot axis lies in the front region and in particular in the front of the housing. The pivot axis lies in the case of a fastening device mounted on an extractor hood in the horizontal. As a result, a pivoting of the pivot arm in the housing and from the housing is made possible. The compression spring is preferably a helical spring having a longitudinal extent.

The swivel arm according to the invention has a latching lug, which is also referred to as a pivoting nose. As a latching nose in this case a preferably rounded projection or tip is referred to the pivot arm, which serves for engagement with a holder on the cabinet wall. The locking lug is therefore preferably aligned so that it faces away from the housing of the fastening device.

The compression spring according to the invention is arranged so that it engages offset on the inside of the pivot arm in the region of the latching lug and to the pivot axis down. As the inside of the pivot arm, the side is referred to, which faces the housing. In the region of the latching lug, the inside is preferably designed as a bulge and follows the outer contour of the latching lug. As offset to the pivot axis down a compression spring is referred to, which is in the mounted state of the fastening device to the hood at a lower level than the pivot axis. In addition, the compression spring is perpendicular to the pivot axis. Thus, by the compression spring, a force can be applied to the pivot arm, which leads to the pivoting of the pivot arm about the pivot axis. Especially preferred the pivot axis is parallel to or in the front edge of the housing. The compression spring preferably extends in the horizontal direction in the depth direction of the housing and is at least partially accommodated therein.

By according to the invention, a pivot arm is provided on a housing which is movably mounted on the housing about a pivot axis and also engages a compression spring in the region of the locking lug of the pivot arm, which is perpendicular to the pivot axis and below the pivot axis, a number of advantages can be achieved , On the one hand, the swivel arm can be swiveled out of the housing by the compression spring at least with its detent nose. In this way, a hold of the fastening device can be achieved on a holder or a part of the cabinet wall. By the compression spring, by which the pivoting arm is pivoted or pushed out, engages in the region of the latching lug on the pivoting arm, the force component, which is directed outwards, and thus responsible for engagement with a holder or the wall unit, is particularly large and can also be targeted. The direction of the compression spring is also perpendicular to the insertion direction in which a hood with attached thereto fastening device is inserted from below into a cabinet. Thus, the pressure force of the compression spring obstructs the insertion of the hood only slightly. With the present invention, therefore, it is possible in a simple and reliable manner to introduce and hold an extractor hood in a desired position, in particular in a wall unit.

According to a preferred embodiment, the swivel arm on an underside, which describes a circular arc whose distance to the pivot axis of the vertical from below decreases steadily in the direction of the locking lug of the pivot arm. As the bottom of the pivot arm, the end of the pivot arm is referred to, which is opposite to the pivot axis. In the assembled state of the fastening device on the hood this end points down. The bottom describes a circular arc, that is, has a geometry that runs around a center. The distance of the circular arc to the pivot axis decreases from the vertical from below in the direction of the locking lug of the swing arm steadily. At the locking lug the distance to the pivot axis is thus the smallest. As the distance of the circular arc from the pivot axis decreases, a geometry is created by which the Fastening device and thus the hood to which the fastening device is attached, can be pulled upwards in a cabinet.

The difference of the distance from the lower end of the pivot arm, that is, in the mounted state in the vertical radius about the pivot axis, to the radius of the geometry of the arc around the pivot axis of the latch determines the amount by which the fastening device in the extractor hood Cabinet can lift up. Since the compression spring engages in the region of the locking lug on the pivot arm and thus pushes it outward, when inserting the fastening device in the cabinet of the swivel arm with the circular arc geometry on the underside of a wall mount and by the pivoting means of the compression spring of the circular arc runs along the wall bracket. By increasing in this movement distance when pivoting the pivot arm of the bottom to the pivot axis, the hood is pulled upwards.

With this embodiment, therefore, the advantage can be achieved that the extractor hood, which is attached via such a fastening device to a cabinet, can adjust itself and in particular the hood is pulled upwards. In this way, the occurrence of a gap between the lower edge of the cabinet and a bottom of the hood or upper edge of a drawer or a rail profile of the drawer can be closed, whereby impurities that might otherwise settle in the gap can be prevented. In addition, the fact that the adjustment of the cooker hood is done by the fastening device itself, simplifies the attachment of the hood. In particular, the attachment, that is, the installation of the hood in the cabinet done by a single person, since holding the hood for adjustment is not required.

The geometry of the swivel arm, in particular the underside of the swivel arm is in this case designed as steep as possible, so that a greater height compensation, in a wrong mounting the brackets on the cabinet, can be compensated. On the other hand, the geometry is designed as flat as possible to ensure a secure hold of the cooker hood in the wall cabinet. In addition, the depth of the pivot arm, that is, its extension in the width direction of Extractor hood in the installed state dimensioned so that the depth of the fastening device can be kept low and preferably corresponds to the distance between an outer wall of the extractor housing and an inner wall of the extractor housing or at least does not exceed this distance.

According to a preferred embodiment, the circular arc has a radius in the range of 28mm to 32mm to the center of the arc and the center of the arc is offset to the pivot axis of the pivot arm, which may also be referred to as a pivot point or axis of rotation. The difference between the radius of the circular arc and the same radius about the pivot axis in the region of the latching nose is preferably at least 2 mm, more preferably 4 mm to 6 mm and more preferably 5 mm. The angle by which the latch is inclined from the vertical is preferably selected in the range of 50 ° to 60 °, preferably 55 °. In this way, a depth of the pivot arm can be ensured which is low enough to be received in the housing of the fastening device and yet the depth of the fastening device is low enough to be taken in particular at a distance between the outer wall and the inner wall of the extractor housing.

As already mentioned, the compensation in height takes place via the geometry of the swivel arm, that is to say in particular via the circular arc on the underside of the swivel arm. In the preferred embodiment, the pivot arm, at the point where it rests against the wall mount, a radius of 28mm-32mm, preferably 30mm. By the center of the radius is offset to the pivot axis, that is not congruent with the pivot axis of the pivot arm, the desired height compensation can be achieved. If the pivot axis and center of the radius of the circular arc were congruent, no height compensation would be possible, since the distance between the pivot axis and circular arc would always be the same. In order to realize a height compensation, according to the invention preferably increases the distance from the axis of rotation to radius of the circular arc of the locking lug from downwards steadily. The center position of the radius of the arc of the swing arm results from the maximum distance between the two radii (radius around the pivot axis to radius of the arc) to each other and a radial value of the circular arc, which can be set for example with 30mm. The maximum distance of the radii is for example, set with 5mm. This means that the maximum height compensation is 5mm. If the distance is larger, a secure holding the hood in the wall cabinet is no longer given because the static friction between the swing arm and wall bracket is no longer sufficient to hold the hood. At a low distance, although increases the safety of holding the hood in the wall cabinet, at the same time reduces the possible height compensation.

According to a preferred embodiment, the force of the compression spring is adjustable. Particularly preferably, an increase takes place, which can be applied by the compression spring pressure force. The adjustment of the force of the compression spring is preferably carried out by shortening or lengthening the length of the compression spring, in particular by compressing or relaxing the compression spring. According to a preferred embodiment, the force of the compression spring can be adjusted to two values of the pressure force.

The adjustment of the pressure force of the compression spring has the advantage that the force can be adapted to the current requirements. For example, during the introduction of the extractor hood and thus the fastening device mounted in the cabinet, the pressure force can be set lower. Since the compression spring engages on the inside of the detent and the swing arm in the direction out of the housing out, that is, pushes out, setting a lower pressure force during the introduction of the hood is advantageous because the force that the fitter for introducing the Extractor hood needs to spend less. However, by the pressure force is adjustable and can be increased in particular, it is possible in the introduced state of the hood in the cabinet to increase the pressure force and thereby improve the maintenance of the hood and in particular the fastening device to the cabinet. In addition, the adjustment of the extractor hood can be supported by increasing the pressure force.

According to a preferred embodiment, the fastening device therefore comprises a relative to the housing movable spring holder which supports the compression spring at least in the axial and preferably also in the radial direction. The pen is for this purpose preferably hollow or has at least at one end a cutout extending over part of the length of the spring holder and into which the compression spring can be inserted. The compression spring is preferably inserted loosely into the cutout. Alternatively, the compression spring but also be firmly connected to the spring holder. The compression spring can be connected for example by gluing or by a receiving element with the spring holder. The spring holder is preferably a plastic component.

According to one embodiment, the spring holder has a base body which has a tubular shape or sleeve shape which has a contact surface for the compression spring at one end and is therefore at least partially closed at this end. The contact surface can be created by a head, which closes the body of the spring holder at one longitudinal end at least partially. The spring holder is movable relative to the housing. In particular, the spring holder can be moved in its longitudinal direction and thus in the longitudinal direction of the compression spring. By the movement of the spring holder so that the pressure force of the spring can be adjusted.

This embodiment, in which a spring holder movably held on the housing is provided, has the advantage over embodiments in which the compression spring rests, for example, directly on the rear wall of the housing, that in this way the compressive force can be adjusted in a simple manner. By the spring holder also supports the compression spring at least in the axial direction and preferably also in the radial direction, a buckling of the compression spring can be prevented in a compression of the compression spring. In addition, the compression spring is guided or held by the spring holder. Furthermore, the pen holder is designed so that this one hand, a fall of the hood can be prevented and on the other hand disassembly of the hood, that is, a removal of the hood from the cabinet is possible.

According to a preferred embodiment, the housing in the rear wall on a passage opening for access to the compression spring. Through the passage opening thus the force of the compression spring can be adjusted. In a preferred embodiment, a spring holder is guided through the passage opening. The advantage that results from the provision of a passage opening in the rear wall, is that this after the Installation of the mounting device in the hood is accessible from the inside of the hood so that the setting of the pressure force during or after the introduction of the hood in the cabinet is possible.

According to a preferred embodiment, the swivel arm has a fixing projection on its rear side for engagement with a fixing device of the fastening device, preferably a fixing device on the spring holder. As a fixing projection, a projection formed on the pivot arm is formed in the direction of the housing. Preferably, the at least one fixing projection is provided in the vicinity of the point of application of the compression spring. Thus, the fixing projection is preferably in the width of the pivot arm and more preferably in the region of the locking lug. Furthermore, a fixing device is preferably provided on the fastening device, which engage with the fixing projection, that is, can cooperate. The engagement of the fixing device with the fixing projection preferably blocks a movement of the pivoting arm. In particular, the pivot arm can not be pivoted further in the direction of the housing. Thus, an unwanted pulling or pushing the swing arm and in particular the locking lug can be prevented by which the maintenance of the hood would be canceled. Another advantage of providing a fixing device and a Fixiervorsprungs is that the compressive force of the compression spring can be chosen smaller, since the support of the fastening device and thus the hood is supported or ensured in an end position by the engagement of the fixing device with the fixing projection.

Particularly preferably, the fixing device is provided or formed on the spring holder. This embodiment is advantageous because the spring holder is designed to be movable to the housing and so the fixing only at the desired time, in particular when the hood is in its end position in the cabinet, can be brought into engagement with the fixing projection, while inserting the Extractor hood in the cabinet does not engage the fixing device with the fixing projection and so does not hinder the movement of the swing arm. The fixing device on the spring holder can in particular represent the open longitudinal end of a tubular or sleeve-shaped spring holder. About this longitudinal end of the compression spring is inserted into the spring holder. A near the point of attack of the Compression spring provided on the pivot arm fixing projection can therefore be brought into a simple manner by approaching the longitudinal end of the spring holder to the pivot arm. The fixing projection is preferably at least partially introduced into the interior of the spring holder. The fixing projection preferably has a trapezoidal shape, with the smaller height or width of the fixing projection facing away from the latching lug. Thus, the insertion and centering of the fixing projection can be supported in the fixing device, in particular in the open longitudinal end of the spring holder.

According to a preferred embodiment, the spring holder has a base body with an interior for receiving a compression spring and has on the outside of the base body a connection geometry, in particular at least one bayonet projection or an external thread on. By this configuration, the spring holder on the one hand allow the above-mentioned functions, in particular the support of the spring in the axial and radial directions and optionally the engagement with a fixing projection. By the connection geometry on the outside, on the other hand, the relative position of the spring holder can be fixed to the housing of the fastening device. In particular, the spring holder can be inserted and held by different amounts via a passage opening in the back of the housing. For example, in a first relative position, the spring retainer may be inserted into the housing so far that the force exerted thereby on the compression spring is sufficient to prevent retraction of the detent into the housing. In a second relative position, in which the spring holder is further introduced into the housing, the compression spring can be compressed so far that the pressure force is sufficient to ensure the maintenance of the hood in the cabinet. If a fixing projection is provided on the pivoting arm, the spring holder preferably engages with the fixing projection in the second relative position with the open longitudinal end serving as a fixing device.

The connection geometry preferably has a plurality of bayonet projections according to one embodiment. These extend radially from the outside of the spring holder and in particular from the tubular body of the spring holder to the outside. Preferably, each two bayonet projections are provided at an axial position of the spring holder at radially opposite locations and at an axial offset second axial position, two more bayonet projections are provided on at radially opposite locations. The bayonet projections at the first and the second axial position are in this case arranged radially offset from each other and are preferably perpendicular to each other. About the bayonet projections, of which two can be referred to as a bayonet closure, the position of the spring holder can be changed in the fastening device.

Essentially, according to the invention, two different positions of the spring holder in the fastening device are required. When installing the hood, the first bayonet lock of the spring holder is locked to the housing of the fastening device. To secure the hood in the installed state, the spring retainer must be inserted and connected to the second bayonet lock with the housing of the fastening device. To remove the cooker hood, the bayonet catch must be completely opened and the spring removed. Turning is done either manually or with a tool. For turning by means of tools, the pen holder can be designed so that screwdriver can be screwed in using a flat screwdriver.

By this embodiment, the spring holder can be easily held in different relative positions to the housing at this. For this purpose, two radially opposite bulges are preferably provided at a passage opening in the back of the housing, through which the bayonet projections can be guided.

According to a further embodiment, an external thread is provided on the spring holder and in particular on its base body as connection geometry. In this embodiment, an internal thread for engagement with the external thread is introduced at the passage opening in the back of the housing. In this embodiment of the connection geometry, the spring holder can be further introduced by rotation into the housing or moved out of it. Also in this embodiment, the spring holder can be held in different relative positions to the housing. Since this hold is created by the thread, the different relative positions can be adjusted continuously.

According to a further aspect, the invention relates to a suspension system for mounting a cooker hood in a piece of furniture. The suspension system is characterized in that the suspension system has at least one fastening device according to the invention and at least one wall bracket for attachment to the wall of the furniture.

Although it is also possible according to the present invention to fix a cooker hood by means of the fastening device according to the invention directly to a cabinet, for example at a cutout in the bottom of a wall unit, it is preferred to use a suspension system in which on the wall of the furniture a Wall bracket is provided. The wall of the furniture here is preferably the side wall of a hanging cabinet. As a wall bracket to the fastening device and the cabinet separately present component is referred to, which can be attached to the wall, in particular on the inside of the side wall of a hanging cabinet. This attachment can be done for example by means of screwing. The wall mount preferably has at least one bearing surface for a part of the pivot arm of the fastening device. Preferably, the support surface is inclined from the horizontal upwards. Particularly preferably, this support surface is formed on a support geometry in the wall mount, which represents a projection, in particular a V-shaped projection. The bearing surface is formed by the upper leg of the projection.

By providing a separate wall mount, a cooker hood can also be placed in a cabinet where no floor is provided. In addition, the mounting geometry of the wall mount can be designed so that it cooperates particularly suitable with the fastening device. Thus, in particular, the inclination of the support surface can be adapted to the radius of the circular arc on the underside of the swivel arm.

According to a further aspect, the present invention relates to an extractor hood, which is characterized in that it comprises at least one fastening device according to the invention.

The fastening device is preferably arranged between an outer wall and an inner wall of the extractor housing. By this position of the fastening device, on the one hand, a protrusion of at least a part of the pivot arm of the fastening device for holding the extractor hood can be ensured. On the other hand, by this position but also the fastening device can be protected by the inner wall from contamination. In addition, the cleaning of the extractor hood is simplified in this preferred positioning of the fastening device, since not the housing of the fastening device but the inner wall of the extractor housing is located on the inside. The inner wall forms a substantially smooth inside of the extractor hood and can therefore be easily cleaned. Finally, this positioning of the fastening device is advantageous because by enclosing between the inner wall and outer wall to the outer geometry of the housing of the fastening device no special requirements are to be made in terms of cleaning and this therefore be formed according to the requirements for the support of the pivot arm and optionally a spring holder can.

Preferably, a mounting opening for the passage of at least the pivoting arm of the fastening device is provided from the inside in the outer wall of the extractor housing. The fastening device in this case preferably has push-in feet, by means of which the fastening device can be held on the outer wall. In addition, the attachment device is preferably bolted or otherwise fixed to the outer wall so as to prevent movement of the housing of the attachment device with respect to the outer wall.

According to a preferred embodiment, a passage opening for access to at least a part of the fastening device is introduced in the inner wall of the extractor housing. Particularly preferably, the passage opening in the inner wall of the extractor housing is aligned with the passage opening in the rear wall of the housing of the fastening device. This makes it possible, for example, to access a spring holder which is held on the passage opening in the back of the housing of the fastening device, and to change the relative position of the spring holder to the housing of the fastening device. Thus, it will also after the installation of the fastening device in the hood possible to change the pressure force of the compression spring and / or to bring a fixing device on the spring holder with a fixing projection on the pivot arm in engagement. The passage opening in the inner wall of the extractor housing can be closed by a cap, which can be inserted, for example, in the passage opening after installation of the hood in the cabinet.

According to the invention, the extractor hood preferably represents a flat-screen hood. In the case of a flat-screen hood, a drawer, which can also be referred to as a screen, can be displaced relative to the extractor hood. The extractor housing is accommodated in a wall unit, while the drawer and rail profiles for the drawer, which connect to the bottom of the extractor housing below the lower edge of the cabinet to allow the removal of the drawer. Thus, especially in a flat-panel hood, the exact positioning of the extractor housing in the cabinet of importance. With the fastening device according to the invention, this positioning can be ensured in a simple manner and a gap between the underside of the cabinet and the lower edge of the extractor housing or the upper edge of the drawer or a rail profile can be avoided.

Advantages and features that are described with respect to the fastening device according to the invention apply - as far as applicable - accordingly for the suspension system according to the invention and the extractor hood according to the invention and in each case vice versa and therefore may be mentioned only once.

Figur 1:

eine schematische Perspektivansicht einer Ausführungsform der erfindungsgemäßen Befestigungsvorrichtung während der Montage;

Figur 2:

eine schematische perspektivische Seitenschnittansicht der Ausführungsform der Befestigungsvorrichtung nach Figur 1 mit Feder und Federhalter;

Figur 3:

eine schematische perspektivische Seitenschnittansicht der Ausführungsform der Befestigungsvorrichtung nach Figur 1 mit Feder;

Figur 4:

eine schematische Perspektivansicht auf eine Befestigungsvorrichtung an einem Dunstabzugsgehäuse von außen;

Figur 5:

eine schematische Perspektivansicht auf eine Befestigungsvorrichtung an einem Dunstabzugsgehäuse von innen;

Figur 6:

eine schematische Innenansicht einer Dunstabzugshaube mit montierter Befestigungsvorrichtung;

Figur 7:

eine schematische Darstellung einer Dunstabzugshaube beim Einbau in einen Schrank;

Figuren 8 - 10:

Detailansichten der Befestigungsvorrichtung aus Figur 7 in unterschiedlichen Zuständen;

Figur 11:

eine schematische perspektivische Rückansicht einer Ausführungsform der erfindungsgemäßen Befestigungsvorrichtung mit Federhalter;

Figur 12:

eine schematische Schnittansicht einer Ausführungsform der erfindungsgemäßen Befestigungsvorrichtung im fixierten Zustand;

Figur 13:

eine schematische Darstellung einer weiteren Ausführungsform eines Federhalters der erfindungsgemäßen Befestigungsvorrichtung;

Figur 14:

eine schematische perspektivische Rückansicht einer Ausführungsform der erfindungsgemäßen Befestigungsvorrichtung mit Federhalter nach Figur 13; und

Figur 15:

eine schematische Darstellung der Ermittlung der Geometrie einer Ausführungsform des erfindungsgemäßen Schwenkarms.

The invention will be described again below with reference to the accompanying drawings. Show it:

FIG. 1:

a schematic perspective view of an embodiment of the fastening device according to the invention during assembly;

FIG. 2:

a schematic perspective side sectional view of the embodiment of the fastening device according to FIG. 1 with spring and penholder;

FIG. 3:

a schematic perspective side sectional view of the embodiment of the fastening device according to FIG. 1 with feather;

FIG. 4:

a schematic perspective view of a fastening device on a fume hood housing from the outside;

FIG. 5:

a schematic perspective view of a fastening device on a fume hood housing from the inside;

FIG. 6:

a schematic interior view of an extractor hood with mounted fastening device;

FIG. 7:

a schematic representation of an extractor hood when installed in a cabinet;

Figures 8-10:

Detail views of the fastening device from FIG. 7 in different states;

FIG. 11:

a schematic perspective rear view of an embodiment of the fastening device according to the invention with spring holder;

FIG. 12:

a schematic sectional view of an embodiment of the fastening device according to the invention in the fixed state;

FIG. 13:

a schematic representation of another embodiment of a spring holder of the fastening device according to the invention;

FIG. 14:

a schematic perspective rear view of an embodiment of the fastening device with spring holder according to the invention FIG. 13 ; and

FIG. 15:

a schematic representation of the determination of the geometry of an embodiment of the pivot arm according to the invention.

In FIG. 1 a first embodiment of the fastening device 3 according to the invention is shown in the open state. Here are of the fastening device 3 in FIG. 1 only the housing 30 and the pivot arm 31 are shown.

When assembling the fastening device 3, the pivot arm 31 is first pushed into the housing 30 at the position provided for this purpose. The housing 30 has a box shape and is open to the front. As the front of the housing 30 according to the invention, the side is called, which is directed in the mounted state of the fastening device 3 in a hood 1 to the outside, that is, the inside of the extractor hood of the hood 1 is remote.

The pivot arm 31 is inserted from the side into the housing 30. In particular, a rod, which is located in the pivot axis D of the pivot arm 31, inserted into an axle bracket 303 from the side. To accurately define the insert, a stop 32 is provided on the rod, which is located in the pivot axis D of the pivot arm. The pivot axis D of the pivot arm 31 is referred to below as the axis of rotation D.

The pivoting arm 31 of the fastening device 3 is held about the pivot axis D extending along the front upper edge of the housing 30. In the illustrated embodiment, the pivot axis D is formed by the rod which has the stop 32 at one end to prevent axial slippage of the pivot arm 31 along the pivot axis D. On the upper side of the housing 30, an axle mount 303 is provided for this purpose in the illustrated embodiment. But it is also possible to keep the pivot axis D and in particular a running through this rod in another way to the housing 30.

At the back of the pivot arm 31, two locking arms 311 are shown in the illustrated embodiment, which extend to the rear. After the pivot axis D has been fixed to the housing 30, the pivot arm 31 is tilted around the rotation axis D into the housing 30. Here lock the two locking arms 311, which are also referred to as snap hook, with a counter-geometry 300, which on the Housing 30 and in particular on the inside of the housing 30 is provided. By locking the pivoting range of the pivot arm 31 is limited in the direction away from the housing 30.

As it turned out FIG. 3 results, the fastening device 3 according to the invention comprises in addition to the housing 30 and the pivot arm 31, a compression spring 33, which is also referred to as a spring 33. The compression spring 33 is perpendicular to the axis of rotation D of the pivot arm 31 and extends the depth direction of the housing 30, that is in the direction between the front and the back of the housing 30. The compression spring 33 is after locking the locking arms 311 with the counter-geometry 300 on the rear of the housing inserted through a designated passage opening 301. The compression spring 33 is inserted until it rests on the pivot arm 31.

The pivot arm 31 has a latching nose 310, which faces away from the housing 30 in the assembled state of the fastening device 3. The compression spring 33 engages in the region of the latching lug 310 on the inside, that is to say the side of the pivoting arm 31 facing the housing 30. In the in FIG. 3 For this purpose, a positioning projection 312 is provided for this purpose, which can represent a positioning cross, around which the front end of the spring 33 engages around.

The swivel arm 31 is thus held movably on the housing 30 about the pivot axis D and has a latching nose 310. The compression spring 33 is perpendicular to the pivot axis D and engages the inside of the pivot arm 31 in the region of the locking lug 310 to the pivot axis D down offset.

As can be seen from the figures, the underside of the pivot arm 31 is formed by a geometry which describes a circular arc K. The distance of the circular arc K to the pivot axis D takes in this case of the vertical from below in the direction of the locking lug 310 of the pivot arm 31 steadily decreases. In addition, the center of the circular arc K is offset to the rotation axis D. The geometry of the swing arm 31 will be described later with reference to FIG FIG. 15 described in more detail.

In a preferred embodiment, the fastening device 3 in addition to the housing 30, the pivot arm 31 and the compression spring 33 has a spring holder 4.

The spring holder 4 can be pushed after the introduction of the compression spring 33 in the housing 30 via the end of the spring 33, which is remote from the latching nose 310, and connected to the housing 30.

An embodiment of the spring holder 4 is in FIG. 2 shown. The spring holder 4 engages through a passage opening 301 in the rear side of the housing 30. About the front open end of the designed as a sleeve or tube body 40 of the spring holder 4, the spring 33 is inserted into the spring holder 4. At the back of the spring holder 4, a head 41 is provided, which preferably represents a closed plate having a larger diameter than the outer diameter of the main body 40 of the spring holder 4. As a result, the spring 33 can be supported in the spring holder 4 in the axial direction. In addition, thereby a slipping of the spring holder 4 can be prevented in the housing 30.

In the in FIG. 2 As shown, the spring holder 4 is fixed to the housing 30 in a first relative position. In the embodiment according to FIG. 2 the spring holder 4 on the outside of the base body 40 on a connection geometry 401, which is formed by four bayonet projections 4011, of which in FIG. 2 only one is visible.

In the in FIG. 2 shown state is exerted by the compression spring 33 and due to the support of the spring 33 in the spring holder 4 on the inside of the pivot arm 31 a compressive force which presses the pivot arm 31 to the outside, that is from the housing 30 away. A complete pushing out of the pivot arm 31 out of the housing 30 is prevented by the latching of the latching arms 311 produced with the Gegengeometire 300.

In FIG. 4 is a schematic view of the embodiment of the fastening device 3 according to the invention, which is attached to an extractor hood 1, shown. Here is in FIG. 4 the outside of the extractor housing 10 (see FIG. 7 ). In the outer wall 12 of the extractor housing 10, a mounting opening 120 is introduced. The size and shape of the mounting opening 120 is selected so that at least the latching lug 310 of the pivoting arm 31 can protrude through the mounting opening 120. On the other hand, the mounting hole 120 is designed so that it is smaller than the housing 30 of the fastening device 3 and the housing 30 thus reliable rests from the inside to the outer wall 12. For fastening the fastening device 3 on the outer wall 12, the fastening device 3 is applied to the inside of the outer wall 12 and moved upward so that forwardly projecting from the housing slide feet 302 which protrude through the mounting hole 120, engage an edge of the mounting hole 120 , In addition, the housing 30 can be screwed on its underside with the outer wall 12 from the inside via a screw 314.

In FIG. 5 the view is on the back of the fastening device 3 in the mounted on the outer wall 12 of the extractor housing 10 state FIG. 4 shown. The spring holder 4 is in a first relative position to the housing 30 and projects beyond the rear wall of the housing 30.

In this state of the fastening device 3, the extractor hood 1 on which the fastening device 3 is provided, are brought into a cabinet 2 from below. The various states of the fastening device 3, which are going through, are in the FIGS. 7 to 10 shown. At the extractor hood 1 10 fastening devices 3 are provided here on both sides in the outer wall 12 of the extractor housing. On the side walls 20 of the cabinet 2, which is a wall unit, wall brackets 200 are attached in the lower area. The wall brackets 200 together with the fastening devices 3, the suspension system for the hood 1. The wall brackets 200 each have a mounting geometry 201, which has a V-shaped projection in the illustrated embodiment. The upper leg of the V-shaped projection serves as a support surface 2010 and is also referred to below as such. The lower leg of the V-shaped projection serves as a guide surface 2011 and is also referred to as such below.

The distance between the two support geometries 201, that is between the tips of the projections corresponds to the width of the extractor housing 10 of the hood 1 and is preferably slightly smaller than this distance, so that the hood 1 between the support geometries 201 can be inserted.

If now the extractor hood 1 and in particular the extractor housing 10 is pushed from below into the cabinet 2, the pivot arm 31 of the respective fastening device 3 strikes the mounting geometry 201 of the wall mount 200 and in particular on the guide surface 2011. This state is in FIG. 8 shown. By further insertion of the extractor housing 10 up into the cabinet 2, the pivot arm 31 tilts about its axis of rotation D in the housing interior of the housing 30. By the tilting movement, the compression spring 33 is compressed. This condition is in FIG. 9 shown. Once the fitter has pushed the hood 1 and in particular the extractor housing 10 far enough, the spring force causes a provision of the pivot arm 31. As a result, the hood 1 in the furniture, that is fixed in the cabinet 2. This condition is in FIG. 10 shown.

In order to secure the extractor hood 1 in the fixed, hinged position, according to the invention, the spring holder 4 is pushed into the passage opening 301 of the rear side of the housing and fixed until it rests directly on the pivoting arm 31. As a result, the freedom of movement of the pivot arm 31 is blocked. As it turned out FIG. 12 results showing this state, the pivot arm 31 for this purpose on the back of a fixing projection 313. The fixing projection 313 engages in the open side of the spring holder 4. The open side of the spring holder, which can also be referred to as a recess, thus forms a fixing device. The fixing projection 313 on the pivot arm 31 is also shown in FIG FIG. 2 to see.

For the transition of the fastening device 3 from the state in which it fixes the hood 1 to the cabinet 2 to the state in which the pivot arm 31 is blocked, the spring holder 4 from a first relative position to the housing 30 in a second relative position brought. In the embodiment of the spring holder 4, the in FIG. 11 can be seen more precisely, four bayonet projections 4011 are provided as a connection geometry 401 on the outside of the main body 40 of the spring holder 4. The bayonet projections 4011 are aligned with the insertion of the spring holder 4 in the passage opening 301 provided with the passage opening 301 bulges 3011. After the first two radially opposed bayonet projections 4011 lie inside the housing 30, the spring holder 4 can be rotated about its longitudinal axis. For this purpose, in the illustrated embodiment in the head 41 of the spring holder 4, a slot for a tool intended. In order to block the pivot arm 31, the spring holder 4 is now pushed further into the housing 30 until the other two bayonet projections 4011 provided in the vicinity of the head 41 on the main body 40 of the spring holder 4, the passage opening 301 and the bulges provided thereon 3011 have happened and are inside the housing 30. After passing through the bayonet projections 4011, the spring holder 4 is again rotated about its longitudinal axis to prevent slipping out of the spring holder 4.

Another embodiment of the spring holder 4 is in the FIGS. 13 and 14 shown. Also in this embodiment, the spring holder 4 has a base body 40 which has an open longitudinal end. The open longitudinal end is also referred to as a cutout. In the open longitudinal end of the compression spring 33 is inserted. The compression spring 33 is preferably inserted loosely in the cutout. However, it is also possible that the compression spring 33 is firmly connected to the spring holder 4. The compression spring 33 can be connected to the spring holder 4, for example, by gluing or by a receiving element (not shown). In the illustrated embodiment, an external thread 4010 is provided on the outside of the main body 40 of the spring holder 4 as connecting geometry 401. Via the external thread 4010, the position of the spring holder 4 in the fastening device 3 can be changed. For this purpose, the external thread 4010 engages in an internal thread 3010 introduced at the passage opening 301. When introducing the extractor hood 1 in the cabinet 2, the spring holder 4 is preferably screwed only 1-2 threads. To secure the hood 1 in the installed state, the spring holder 4 is then screwed in as far as possible. Depending on how large the distance between the two cabinet side walls to each other, the pen holder 4 can be screwed in different degrees. This allows a certain independence from the tolerances of the distance dimension of the two cabinet walls. In order to dismantle the hood 1, the screw must be completely opened and the spring 33 are removed.

The rotation of the spring holder 4 can also be done in this embodiment either manually or with a tool (screwdriver). For turning by means of a slot is introduced in the illustrated embodiment in the head 41 of the spring holder 4, in which a slot screwdriver can engage.

In FIG. 6 is a view of the interior of the hood 1 and in particular of the extractor housing 10 shown from below. Here, the drawer 13 is pulled out to the front. Inside, the extractor housing 10 is formed by an inner wall 11. In the inner wall 11, a passage opening (not visible) is introduced, which in the in FIG. 6 shown assembled state is covered by a cap 110. This will ensure the ease of cleaning the extractor hood interior. After mounting the hood 1 in the cabinet 2 standing in the hood hood pen 4 is covered with the cap 110. The cap 110 closes the passage opening (not visible) in the sheet metal of the inner wall 11, through which the spring holder 4 dives into the interior of the hood 1. In addition, the hard-to-clean plunger-like pen holder 4 is covered by the smooth and round geometry of the cap 110. This ensures easy cleaning of the interior without protruding parts.

Behind the cap 110 is the spring holder 4, which is accessible through the passage opening (not visible) from the interior of the extractor housing 10. Thus, via the passage opening (not visible) of the spring holder 4 is inserted into the housing 30 of the fastening device 3 and / or screwed or pulled and / or unscrewed.

In order to dismantle the hood 1, that is, to be able to remove from the cabinet 2, the cap 110 is first removed and then the spring holder 4 and the compression spring 33 removed from the housing 30. By removing the spring force the extractor hood 1 can be removed down from the cabinet 2.

In FIG. 15 schematically the determination of the geometry of a pivot arm 31 for the fastening device 3 according to the invention is shown.

For the arc K which forms the bottom of the pivot arm 31, it was assumed at the point where it rests against the wall bracket 201, from a radius of 30mm (Rp18 = 30mm). The center of this arc K may not coincide with the axis of rotation D, otherwise no height compensation of the hood 1 would be feasible. To determine the position of the center M of the arc, is assumed a desired possible height compensation. In the illustrated case, the hood should be able to be raised by up to 5mm to fix mounting errors. This desired height compensation corresponds to the maximum distance that may exist between the radius R about the axis of rotation D and the arc K of the pivot arm 31. If this maximum distance is subtracted at the angular position of the radius R at which a circular arc has the greatest possible structural depth, then the center can be determined. As in FIG. 15 shown, in the illustrated example, the angular position of the locking lug at 55 ° to the vertical (p16 = 55 °). The circular arc K formed around the center thus determined and over the angular range has a steadily decreasing distance from the vertical in the direction of the latching nose 310 up to the axis of rotation D. The top of the locking lug 310 represents a straight line. It should be noted that at the in FIG. 15 shown design over the course of the pivot arm 310 to the locking lug an offset is planned. This offset is 3mm (p13 = 13mm) in the example shown. But it is also possible, the swivel arm 31 in the area between the rotation axis D and the locking lug 310 straight, that is to form without offset.

The present invention has a number of advantages. On the one hand, an additional adjustment of the extractor hood in the wall unit is not necessary. Due to the geometry of the swivel arm and the wall bracket, the cooker hood pulls itself to the lower edge of the wall unit. A gap between the extractor hood, especially between the drawer of the hood or a rail profile of this drawer, and wall cabinet does not arise or does not need to be adjusted by adjusting. A gap between the extractor hood and the cabinet edge must be prevented for visual reasons. This requirement is met in particular by the special geometry of the swivel arm.

The fastening device and the suspension system according to the invention are suitable for use on flat-screen hoods, but can be used for other positioning in the furniture, for example, for fan blocks.

With the invention used spring-arm system, which is characterized by its ingenious simplicity in the assembly (one-man mountability) of the hood, hoods can be mounted in furniture with a wall thickness of 16mm and in furniture with a wall thickness of 19mm ,

In particular, an error in the mounting of the wall brackets on the cabinet can be compensated with the present invention. If the wall bracket is positioned too low in the cabinet, a gap is created between the extractor hood and the cabinet edge. A gap at this point would mean that an unacceptable visual image, the hood in furniture arises. Furthermore, more dirt could accumulate in the gap, which is difficult to remove at this point. With the present invention, a gap formation is avoided even with incorrect positioning of the wall bracket.

Furthermore, the solution according to the invention is customer-friendly, in particular since no readjustment is necessary, since an independent pulling the extractor hood takes place at the lower edge of the wall unit. There are no additional components needed for readjustment, so that the costs are reduced. No tools are required for readjustment. In addition, a compensation of a mounting error of, for example, up to 5mm. Finally, the invention offers ease of cleaning, since there is no gap between the cabinet edge and the hood.

The solution according to the invention also has excellent haptic properties by the spring-arm mechanism. It is a very simple and quick disassembly of the hood allows. The invention is easy to manufacture, since a screwless installation of the fastening device is possible.

LIST OF REFERENCE NUMBERS

1

Hood

10

Extractor housing

11

inner wall

110

cap

12

outer wall

120

mounting hole

13

drawer

2

cabinet

20

lateral wall unit

200

wall mount

201

holder geometry

2010

bearing surface

2011

guide surface

3

fastening device

30

casing

300

against geometry

301

Port

3010

inner thread

3011

bulge

302

Einschubfuß

303

shaft Tab

31

swivel arm

310

locking lug

311

detent arm

312

positioning

313

fixing projection

314

screw

32

attack

33

feather

4

penholder

40

body

400

Spring forward

401

Connection geometry (on outside)

4010

external thread

4011

bayonet lead

41

head

R

Radius swivel arm

D

Pivot point swivel arm

M

Center point radius swivel arm

K

arc

Claims (15)

Fastening device for an extractor hood (1), characterized in that the fastening device (3) has a housing (30), at least one pivot arm (31) and at least one compression spring (33), the pivot arm (31) on the housing (30) a pivot axis (D) is movably held and comprises a latching nose (310) and the compression spring (33) perpendicular to the pivot axis (d) and on the inside of the pivot arm (31) in the region of the latching lug (310) to the pivot axis (D ) attacks offset downwards. Fastening device according to claim 1, characterized in that the swivel arm (31) has an underside which describes a circular arc (K), the distance to the pivot axis (D) from the vertical from below in the direction of the latching nose (310) of the swivel arm ( 31) steadily decreases. Fastening device according to claim 2, characterized in that the center (M) of the circular arc (K) to the pivot axis (D) of the pivot arm (31) is offset. Fastening device according to claim 2 or 3, characterized in that the circular arc (K) has a radius (R) of 28-32mm to the center (M) of the circular arc (K) and the difference between the radius (R) of the circular arc (K) and the same radius about the pivot axis (D) in the region of the latching nose (310) is at least 2 mm, particularly preferably 4 to 6 mm and more preferably 5 mm. Fastening device according to one of claims 1 to 4, characterized in that the force of the compression spring (33) is adjustable. Fastening device according to one of claims 1 to 5, characterized in that the fastening device (3) with respect to the Housing (30) movable spring holder (4), which supports the compression spring (33) at least in the axial direction and preferably also in the radial direction. Fastening device according to one of claims 1 to 6, characterized in that the housing (30) in the rear wall has a passage opening (301) for accessing the compression spring (33). Fastening device according to one of claims 6 or 7, characterized in that the pivot arm (31) on the back of a fixing projection (313) for engagement with a fixing device of the fastening device, preferably a fixing device on the spring holder (4). Fastening device according to one of claims 1 to 8, characterized in that the spring holder (4) has a base body (40) with an interior for receiving a compression spring (33) and on the outside of the base body (40) has a connection geometry (401), in particular at least one bayonet projection (4011) or an external thread (4010). Suspension system for mounting an extractor hood (1) in a piece of furniture (2), characterized in that the suspension system comprises at least one fastening device (3) according to any one of claims 1 to 9 and at least one wall bracket (200) for attachment to the wall (20) of Furniture (2). Suspension system according to claim 10, characterized in that on the wall mount (200) a bearing surface (2010) for resting the pivot arm (31) is formed, which slopes from the horizontal upwards. Extractor hood, characterized in that the extractor hood has at least one fastening device (3) according to one of claims 1 to 9. Extractor hood according to claim 12, characterized in that the fastening device (3) between an outer wall (12) and an inner wall (11) of the extractor housing (10) is arranged. Extractor hood according to one of claims 12 or 13, characterized in that in the inner wall (11) of the extractor housing (10) has a passage opening (111) for access to at least a part of the fastening device (3) is introduced. Extractor hood according to one of claims 12 to 14, characterized in that the extractor hood (1) is a flat-screen hood.

Images