EP0131538B1 - Device for mounting an appliance in a support, especially a kitchen work top - Google Patents

Description

The invention relates to a fastening device for a device insert in a base plate, in particular for sinks and the like. In a kitchen worktop, consisting of a base body which can be snapped into the device insert with a projection, is provided with opposing tongues and a tensioning element, and also consists of a tab-like element with gripping claws that can be connected to the base plate by means of the clamping element.

Such device inserts consist of sinks, drains, hotplate inserts and the like, which are permanently but optionally releasably clamped to the base plate made of wood, plastic or similar materials by means of the fastening device.

The fastening device is arranged in several pieces around the circumference of the device insert, and therefore large quantities are required. The individual parts are thus mass-produced items that are simple, cheap and robust to manufacture.

The fastening device described at the outset is known from DE-A-2 938 135. Further such fastening devices are described in DE-A-2 755 972 and DE-A-2 818 866. From this prior art, a base body with a hinge-like fastener carrier is known, the fastener carrier simultaneously receiving the tab-like element with the gripping claws. Although these fastening devices meet all practical requirements, it has been shown that satisfactory fastening devices also have to be developed further, namely when properties that have not been considered so far are to be fulfilled.

The invention has set itself the goal of facilitating the known fastening devices with regard to the positioning of the tab-like elements, which have the gripping claws, on the circumference of the device inserts before and during assembly.

The object is achieved in that at least one elastic extension is provided on the base body in the area of the tensioning element, that the free end of the extension is in contact with the tab-like element with the gripping claws, and that the extension has the tab-like element on the tensioning element holds outside the clamping position. Alone when assembling the individual parts, each individual fastening device can be set to a uniform position based on the inventive concept, the elastic extension and the clamping element, e.g. a screw, this distance of the tab-like element to the base body within the desired limits. The invention thus makes work easier during assembly. In the event that the attachment is also to be loosened again, the elastic extension supports the lifting of the tab-like element from the base plate and assumes the mounting position again when the tensioning element is in the appropriate position.

The spring force of the elastic extension can be generated in different ways depending on the material used. In the case of plastics, it is advantageous for the base body and the elastic extension to be produced in one piece, the extension forming an elongated strip during manufacture or being able to be produced in an arc shape.

Even greater spring forces are made possible by the elastic extension being preloaded.

The invention then enables the use of different tab-like elements. For this purpose, it is provided that at least two extensions are arranged to run symmetrically to the tensioning element. Movements of the tensioning element therefore take place using forces directed parallel to the tensioning element on the tab-like element.

The scope of the invention is also considerably expanded in that the tab-like element is guided by means of a slot on the tensioning element and by means of at least one web on the base body and can be adjusted transversely to the base body or to the tensioning element.

The positioning of the tab-like element on the base plate is further facilitated in that the tab-like element forms at least one step in the area of the slot.

The connection of the elastic extension with the tensioning element and the tab-like element which carries the gripping claws is created in a simple manner in that the extension is provided at the free end with a continuous opening for the tensioning element.

During assembly, the handling of the tab-like elements often also saves time and makes work easier. To improve the invention in this direction, it is proposed that the extension has at least one stop surface for the tab-like element which can be pivoted in the approximately horizontal plane. This stop surface allows all tab-like elements to be adjusted simultaneously in the direction favorable for assembly.

A further simplification of the assembly or disassembly work in often narrow annular gaps between the ring web of the device insert and the cutout in the base plate is also achieved by the extension being arranged essentially within the thickness or width extension of the base body.

A very space-saving, compact and easy-to-use fastening device is in particular also created in that the extension with its free end lies between parallel spaced sections of the tab-like element, the tensioning element penetrating both the tab-like element and the free end of the extension.

Finally, there is a supplementary improvement of the invention in that the tab-like element is provided with a plurality of lever arms, each having gripping claws and extending in several directions in one plane.

• Fig. 1 eine Seitenansicht der Befestigungsvorrichtung gemäss einem ersten Ausführungsbeispiel,
• Fig. 2 eine Ansicht in Richtung A gemäss Fig. 1 und
• Fig. 3 eine Ansicht in Richtung B gemäss Fig. 1,
• Fig. 4 eine Seitenansicht eines zweiten Ausführungsbeispiels (von der Seite wie Fig. 1 gesehen) und
• Fig. 5 die zu Fig. 4 gehörende Ansicht von vorne.

Exemplary embodiments are shown schematically in the drawing and are described in more detail below. Show it:

• 1 is a side view of the fastening device according to a first embodiment,
• Fig. 2 is a view in the direction A according to Fig. 1 and
• 3 is a view in the direction B according to FIG. 1,
• Fig. 4 is a side view of a second embodiment (seen from the side as Fig. 1) and
• Fig. 5 is the view belonging to Fig. 4 from the front.

The fastening device has a base body 1 and a clamping element 2 in the form of a cap screw. The tab-like element 3 is held in the assembly state shown by means of the elastic extension 4 at a variable distance 5 from the base body 1. The elastic extension 4 is part of the base body 1 made of polyamide and forms the strip 4a which is stretched during manufacture and which, as shown (FIGS. 1 and 5), runs in an arc shape after assembly. The arch shape 4b can serve to generate or increase the spring force in the extension 4. The elastic extension 4 is provided at its free end 4c (FIG. 5) with a through opening 4d for the tensioning element 2. Due to the rectangular outline at the end 4c, the free end 4c of the extension 4 simultaneously forms a stop surface 4e for the tab-like element 3 which can be pivoted in the horizontal plane in the installed position.

The effects of the two illustrated exemplary embodiments according to FIGS. 1 to 3 on the one hand and FIGS. 4 and 5 on the other hand are partly the same, partly different.

1, the tab-like element with the gripping claws 6 is held symmetrically in the region of the clamping element 2 by means of two extensions 4a (FIGS. 2 and 3), so that the existing spring force always presses the tab-like element against the head 2a of the clamping element 2. The fastening device is thus fixed in the “open position”. The tab-like element 3 additionally has the slot 7 and is also provided with two webs 8 (FIGS. 2 and 3), the webs on the base body 1 each being guided with projections 8a in grooves 9 in the longitudinal direction of the base body 1. For installation, all tab-like elements 3 are also set to a higher level, which results in the tab-like elements being fixed in the “open position”, but at the same time a prepared installation position is achieved. The tab-like elements 3 slide in the groove 9 and in the slot 7 in the desired direction. The pivoted-out position of the tab-like element 3 is shown in broken lines in FIG. 1.

4 and 5, the tab-like element 3 is held with the gripping claws 6 by means of a single extension 4b. The elastic extension 4b is arranged by the strip 4a within the thickness extension of the base body 1, so that there is a particularly narrow overall width of the fastening device.

A compact, compact design also results from the fact that the tab-like element 3 is designed with parallel sections 3a and 3b which are formed by U-shaped bending, the distance between the sections 3a and 3b being determined by the thickness of the strip 4a that there is sufficient play to allow the tab-like element 3 to pivot. For assembly, the tab-like elements are simply swiveled in the direction of extension of the strips 4a, the swiveling being limited by the stop surface 4e. The fastening device therefore takes up the smallest possible space and also reduces the transport space in that gaps are largely avoided. Both embodiments have a very narrow construction, the width extension also being sufficient to accommodate two or more extensions even in the case of a plurality of elastic extensions 4 (FIGS. 2 and 3).

Both embodiments can also be provided with tab-like elements 3, on which a plurality of lever arms 11 of different lengths are arranged, of which the appropriate length is used in each case.

Claims (11)

1. Attachment device for an equipment insert in a base plate, in particular for rinsing arrangements and such like in a kitchen work-top, consisting of a base body, which is able to be engaged by a projection into the equipment insert, and which is provided with opposing tongues and a clamping element, and also consisting of a strip-like element with gripper claws, which is able to be connected with the base plate by means of the clamping element, characterized in that on the base body (1) in the region of the clamping element (2) at least one elastic extension (4) is provided, that the free end (4c) of the extension (4) in each case is situated lying against the strip-like element (3) with the gripper claws (6) and that the extension (4) in each case secures the strip-like element (3) on the clamping element (2) outside the clamping position.

2. Attachment device according to Claim 1, characterized in that the base body (1) and the elastic extension (4) are produced in one piece, whereby during production the extension (4) forms an elongated band (4a) or is able to be produced in curved form.

3. Attachment device according to Claims 1 and 2, characterized in that the elastic extension (4) is able to be prestressed.

4. Attachmentdevice according to one or more of Claims 1 to 3, characterized in that at least two extensions (4) are arranged running symmetrically to the clamping element (2).

5. Attachment device according to Claims 1 to 4, characterized in that the strip-like element (3) is carried by means of a slit (7) on the clamping element (2) and by means of at least one cross-piece (8) on the base body (1) and is transversely adjustable with respect to the base body (1) or respectively to the clamping element (2).

6. Attachment device according to one or more of Claims 1 to 5, characterized in that the strip-like element (3) forms at least one step in the region of the slit (7).

7. Attachment device according to one or more of Claims 1 to 6, characterized in that the extension (4) is provided on the free end (4c) with a continuous opening (4d) for the clamping element (2).

8. Attachment device according to one or more of Claims 1 to 7, characterized in that the extension (4) has at least one stop face (4e) for the strip-like element (3) which is able to be pivoted in an approximately horizontal plane.

9. Attachment device according to Claims 1 to 8, characterized in that the extension (4) is arranged substantially within the thickness or width extent of the base body (1).

10. Attachment device according to one or more of Claims 1 to 9, characterized in that the extension (4) lies with its free end (4c) between sections (3a, 3b) of the strip-like element (3) which are spaced parallel apart from each other, whereby the clamping element (2) penetrates both the strip-like element (3) and also the free end (4c) of the extension (4).

11. Attachment device according to one or more of Claims 1 to 10, characterized in that the strip-like element (3) is provided with several lever arms (11), each having gripper claws (6) and extending in several directions in one plane.

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