EP3837401B1 - Connecting element for fastening a sink to a worktop - Google Patents

Description

The invention relates to a connecting element according to the preamble of claim 1 for fastening a sink to a worktop, which worktop has a cutout for inserting the sink, which cutout has a peripheral boundary surface.

The invention also relates to a combination of a sink with at least one connecting element according to the invention arranged on the sink according to claim 10.

For the installation of sinks, in particular kitchen sinks, made of a cast material, in particular a mineral cast material (a plastic cast material or combinations thereof), it is known to provide the sink with a slot on the side in the area of reinforcement structures projecting on its underside, into which a screw -Fixing claw engages with a suitable anchoring projection. Then, by means of a screw to be acted on from below the worktop, a clamp part is brought into contact with the worktop from below in order to fix the sink to the worktop. The disadvantage of such a solution is that it can only be used for a limited range of worktop thicknesses, because the clamping part mentioned has to interact with the worktop from below. In addition, the use of a screw that has to be tightened from underneath the worktop means increased assembly work.

Such an embodiment is specifically from the publication DE 44 39 906 C1 previously known.

Also according to US 3,034,144A For example, an approximately S-shaped clamp provided for fastening a sink has a screwing means in order to brace the clamp against a worktop from below, while the clamp engages in a concave edge of the sink.

The DE 20 64 248 B1 discloses a connecting element in the form of an expanding spring for releasably installing a sink in particular in a worktop, which expanding spring has a free leg with claws, which protrudes resiliently from a side wall of the sink.

DE102009033523A1 and EP1772566A2 disclose further connecting devices for connecting a sink to a worktop, which have spring elements of different lengths or heights.

The invention is based on the object of specifying a connecting element for fastening a sink to a worktop, which can be used for virtually any worktop thickness and requires less assembly work. Advantageously, the connecting element to be created should be suitable for use with (kitchen) sinks that are made of a plastic cast material, a mineral cast material or a corresponding composite material.

The object of the present invention is also to specify a combination of a sink and such a connecting element.

This object is achieved according to the invention by a connecting element for fastening a sink to a worktop with the features of claim 1 and by a combination of a sink and a connecting element arranged on the sink according to claim 10.

Advantageous developments of the idea according to the invention are each the subject of dependent claims.

According to the invention, a connecting element for attaching a sink to a worktop, which worktop has a cutout for inserting the sink, which cutout has a peripheral boundary surface, has the following features: a base body serving as a contact part for contact with the sink; a plurality of spring parts which protrude from the base body on a first side and which are designed to bring about a spring force which acts away from the base body when a load is applied in the direction of the base body; and at least one anchoring part which protrudes from the base body on a second side of the base body opposite the first side and which is designed to engage in a slot-shaped recess on the sink; wherein a direction of engagement of the anchoring part (into said recess) extends substantially approximately anti-parallel to a direction of spring force. An angle between the direction of engagement of the anchoring part and a direction of the spring force (F) is at least 135 degrees, preferably at least 150 degrees, most preferably 180 degrees. The spring parts are designed as tongues that protrude from the base body in an edge area of the base body and have a first extension section adjoining the edge area and a second extension section adjoining the first extension section, with the tongues in the first extension section being approximately perpendicular to the base body and in the second extension section extend approximately parallel or at an acute angle of less than 45 degrees, preferably less than 30 degrees, to the base body. In addition, the spring parts have a further, third extension section, which adjoins the second extension section and in which the spring parts are angled more strongly from the base body than in the second extension section. The connecting element is characterized in that the spring parts differ with regard to the angle between the base body and the tongue in the second extension section and/or a length of the third extension section.

A combination according to the invention of a sink and at least one connecting element arranged on the sink is characterized in that the connecting element is designed as a connecting element according to the invention.

According to the invention, instead of the previously known screw elements, use is made of a connecting element which, due to a spring force imparted by the spring parts, can ensure that the sink is fastened to a worktop in a particularly non-positive manner. The connection element itself is fixed to the sink by means of the anchoring part, which is designed to engage in a slot-shaped recess on the sink. In this context, it is further provided that an engagement direction of the anchoring part (into the slot-shaped recess on the sink), extends essentially approximately antiparallel to a direction of the spring force, so that when the sink is fastened to the worktop using the connecting element, the connecting element is also securely fixed to the sink.

If it is mentioned here and in the following that the direction of engagement of the anchoring part should extend "substantially" approximately antiparallel to a direction of the spring force, this also includes configurations in which an angle between the direction of engagement and the direction of the spring force is at least approximately 135° and 225°, and preferably at least about 150° and 210°. It is therefore not necessary for the direction of engagement and direction of spring force to actually be oriented exactly antiparallel. This is discussed in more detail below.

Because the spring parts are designed as tongues protruding from the base body in an edge area of the base body, which have a first extension section adjoining the edge area and a second extension section adjoining the first extension section, with the tongue in the first extension section being approximately perpendicular to the Base body and in the second extension section extends approximately parallel or at an acute angle of less than 45 degrees, preferably less than 30 degrees, to the base body, it is possible to bend the tongue of the spring part back in the area of the second extension section in the direction of the base body, as a result of which the already addressed spring force (restoring force) results. Tolerances in the production of the worktop cut-out can be compensated for in particular by adjusting or changing the angle mentioned.

In order to further improve the fastening effect of the connecting element, the spring parts have a further, third extension section which adjoins the second extension section and in which the spring parts are angled more strongly from the base body than in the second extension section.

In order to further improve the fixing effect, it can be provided in a development of the connecting element according to the invention that the spring parts is widened at least in regions in the third extension section compared to the second extension section.

In addition, in the course of another development of the connecting element according to the invention, the spring parts can also have a widening at least in regions in the second extension section. In this way, in particular, the stability of the spring part itself can be increased.

The connecting element according to the invention has a plurality of spring parts which differ in terms of the angle between the base body and the sum in the second extension section and/or in terms of a length of the third extension section. This also allows tolerances, in particular of the worktop cut-out, to be effectively compensated for and the fastening effect to be improved.

With regard to the anchoring part, in the course of another development of the connecting element according to the invention, it can be provided that this is designed as a tongue that protrudes from the base body in an edge area of the base body and has a first extension section adjoining the edge area and a second extension section adjoining the first extension section has, wherein the tongue in the first extension section extends approximately perpendicularly to the base body away from this and in the second extension section back to the base body.

In this way, an effective fixation of the connecting element in the slot-shaped recess of the sink can be achieved, with the fixing effect being able to be further improved in that an effective width of the anchoring part in the region of the first and second extension section is at least slightly larger than a corresponding width of the slot-shaped recess. Because the anchoring part bends back in the area of the second extension section, it is flexible in the area mentioned and can thus (elastically) deform accordingly when it is inserted into the slot-shaped recess of the sink.

The fixing effect can be further improved in that, in the course of another development of the connecting element according to the invention, the anchoring part tongue has an incision or a notch on its free edge at the end. In this way, tips of the anchoring part tongue are formed in the area of the said terminal free edge, which can dig into the material of the sink. It is therefore not readily possible to remove an inserted connecting element again without damaging it.

In the course of a particularly preferred development of the connecting element according to the invention, it can be provided that it has a plurality of anchoring parts, which preferably differ in terms of an angle between the first extension section and second extension section and/or in terms of a dimension of the first extension section. This improves the anchoring effect.

It has proven to be advantageous if, in the course of a corresponding development of the invention, the connecting element is produced as a stamped and bent part or as a laser-cut part from a metallic material, preferably steel, most preferably high-grade steel. In this way, the connecting element has the necessary stability and durability when in use, particularly in a potentially damp environment.

In the course of another development of the connecting element according to the invention, it can also be provided that it has at least one tab on the base body, preferably at the end, which protrudes beyond the rest of the base body, preferably in width. This tab/s can be helpful in the manufacture of the connecting element and serve, for example, to fix the connecting element during manufacture.

Furthermore, in the course of another embodiment of the connecting element according to the invention, it can be provided that at least one opening is provided in the base body, preferably in the area of the tab mentioned. This breakthrough can serve to center the connecting element during its production and to convey it further.

Although the tabs mentioned are generally not relevant for attaching the connecting element to the sink, they can be helpful during assembly.

In a further development of the combination according to the invention, it can be provided that the sink has at least one marginal anchoring and bearing structure on its mounting underside with a bearing surface that extends at an angle of about 90 degrees relative to a bearing edge of the sink, and with a slot-shaped Recess in the contact surface, which recess extends parallel to the bearing edge and is designed and provided for receiving the anchoring part. In the area of the support edge mentioned, the sink rests on top of the worktop when assembled. Said anchoring and contact structure is then located in the area of the cutout in the worktop, adjacent to its boundary surface.

The angle mentioned above is not limited to values of exactly 90°, but can deviate from this within a certain tolerance range. For example, such a deviation of about 5°, about 10° or about 15° has proven to be expedient. The anchoring and bearing structure then has a truncated cone-shaped configuration in cross section, which can facilitate demolding, particularly when the sink is made of a cast material.

In yet another further development of the combination according to the invention, it can be provided that the connecting element rests with the base body on the contact surface when the anchoring part is accommodated in the recess, with the spring part protruding outwards away from the sink. Accordingly, an angle between the base body and the anchoring part should be adapted to the angle mentioned in the area of the contact surface of the anchoring and contact structure. In this way, the connecting element can be effectively supported areally on the anchoring and bearing structure and thus optimally exert its fastening effect.

It has already been pointed out that in the course of a preferred development of the combination according to the invention, the anchoring and bearing structure can be designed in the shape of a truncated cone in cross section.

Additionally or alternatively, in another development of the combination according to the invention, provision can be made for an anchoring and bearing structure to be provided on both long sides and/or short sides of the sink. It has proven particularly advantageous to provide appropriate anchoring and support structures only on the two long sides of the sink. However, it is within the scope of the invention to provide a corresponding anchoring and bearing structure on at least one of the two short sides of the sink, preferably on a side of the sink facing away from a sink.

It has also already been pointed out that the sink as part of a corresponding embodiment of the combination according to the invention, preferably the sink including the anchoring and attachment structure, which can be integrally formed with the sink, made of a plastic casting material, a mineral casting material or a corresponding Composite material can be made. Such sinks are aesthetically pleasing and particularly durable in terms of their durability and stability.

Finally, in a development of the combination according to the invention, it can also be provided that this combination also includes a worktop, which worktop has a cutout for inserting the sink, which cutout has a peripheral boundary surface, with which boundary surface the connecting element with the spring part for fastening the sink works together. The special design of the anchoring elements serves to securely fasten the connecting element in the slot-shaped recess on the sink. Due to the configuration described, the connecting element can easily be introduced into the said slot, for example by pushing it in from the side, but cannot be easily removed from it again. When (forcefully) removing the connecting element from the slot using a tool, the connecting element would be damaged and thus unusable.

Figur 1

zeigt in einer perspektivischen Darstellung ein erfindungsgemäßes Verbindungselement zum Befestigen einer Spüle an einer Arbeitsplatte;

Figur 2

zeigt in einer perspektivischen Darstellung eine etwas andere Ausgestaltung des erfindungsgemäßen Verbindungselements;

Figur 3

zeigt in einer perspektivischen Darstellung eine andere Ansicht des Verbindungselements aus Figur 2;

Figur 4

zeigt schematisch eine Draufsicht auf das Verbindungselement gemäß Figur 1;

Figur 5

zeigt perspektivisch die Unterseite einer Spüle, bei der ein erfindungsgemäßes Verbindungselement zum Einsatz kommen kann;

Figur 6

zeigt einen Teil der Spüle aus Figur 5 zur Illustration eines diesbezüglichen Bearbeitungsverfahrens;

Figur 7

zeigt ein Detail der Spüle aus Figur 5 im Zusammenwirken mit einem erfindungsgemäßen Verbindungselement;

Figur 8

zeigt eine andere Darstellung des Sachverhalts aus Figur 7;

Figur 9

zeigt eine Detaildarstellung einer Kombination aus Spüle und erfindungsgemäßem Verbindungselement; und

Figur 10

zeigt eine andere Darstellung des Sachverhalts aus Figur 9.

Further properties and advantages of the invention result from the following description of exemplary embodiments with reference to the drawing.

figure 1

shows a perspective view of a connecting element according to the invention for attaching a sink to a worktop;

figure 2

shows a somewhat different embodiment of the connecting element according to the invention in a perspective view;

figure 3

shows a different view of the connecting element in a perspective representation figure 2 ;

figure 4

shows schematically a plan view of the connecting element according to FIG figure 1 ;

figure 5

shows in perspective the underside of a sink in which a connecting element according to the invention can be used;

figure 6

shows part of the sink figure 5 to illustrate a relevant processing procedure;

figure 7

shows a detail of the sink figure 5 in cooperation with a connecting element according to the invention;

figure 8

shows a different view of the situation figure 7 ;

figure 9

shows a detailed representation of a combination of sink and connecting element according to the invention; and

figure 10

shows a different view of the situation figure 9 .

figure 1 shows in perspective a possible embodiment of the connecting element according to the invention for attaching a sink to a worktop. The connecting element is in figure 1 denoted overall by the reference numeral 1. It is advantageously a stamped and bent part made of a metal Material, preferably made of stainless steel. The connecting element 1 has: a base body 2, which is designed as a contact part to be placed on an in figure 1 not shown sink is used. This is discussed in more detail below. Furthermore, at least one spring part protruding from the base body 2 on a first side. In figure 1 Eight such spring parts are shown, which are correspondingly denoted by the reference numerals 3.1 - 3.8. The spring parts 3.1 - 3.8 are designed to bring about a spring force acting away from the base body 2 when a load is applied in the direction of the base body 2 . Furthermore, at least one anchoring part 4, which protrudes from a second side of the base body 2 opposite the first side of the base body 2 and is at least designed to engage in a slot-shaped recess on the sink, which will be discussed in more detail below. In the representation according to figure 1 only such an anchoring part 4 can be seen to some extent. For a more detailed description see the figure 2 referred.

figure 2 shows a view of the mentioned second side (rear side) of the base body 2, whereby it can be seen that instead of just one anchoring part, actually six anchoring parts 4.1 - 4.6 are provided and in figure 2 are marked accordingly.

On the base body 2, the connecting element according to figure 1 terminal tabs 5.1, 5.2, which protrude beyond the rest of the base body 2, especially in its width. A circular opening 6.1, 6.2 is provided in the area of these tabs 5.1, 5.2.

How to figure 2 easily removed, the configuration shown there has no such tabs and openings. However, it is within the scope of the invention, including in figure 2 illustrated embodiment to provide such tabs / openings. Likewise, at the in figure 1 shown embodiment on the tabs 5.1, 5.2 and openings 6.1, 6.2 are omitted.

A corresponding design is in figure 3 shown, which is an illustration of the other side (front side) of the connecting element 1 according to figure 2 acts. Otherwise, the configuration of the connecting element corresponds 1 according to figure 3 according to the configuration of the connecting element 1 figure 1 .

figure 4 shows a slightly different representation of the connecting element 1 according to FIG figure 1 , to make it clear that the individual spring parts 3.1-3.8 have different extension lengths away from the base body 2. This will in figure 4 illustrated by the two dot-dash lines, each representing a kind of tangent to the spring parts 3.1 to 3.4 and 3.5 to 3.8. On the corresponding structural design of the spring parts 3.1 - 3.8 is now based on figure 1 received as an example.

Each spring part 3.1 - 3.8 is designed as a tongue protruding from the base body 2 in an edge area of the base body 2 . Each of these tongues initially has a first extension section 3.8a, which is followed by a second extension section, which in figure 1 is denoted by the reference numeral 3.8b. The tongue extends in the first extension section 3.8a approximately perpendicularly to the base body 2 and in the second extension section 3.8b approximately parallel or at a relatively acute angle of less than 45°, preferably less than 30°, with respect to the base body 2 the spring parts 3.1 - 3.8 or tongues have another, third extension section, which in figure 1 is denoted by the reference numeral 3.8c. The third extension section 3.8c follows the second extension section 3.8b; in it the spring part 3.1-3.8 is angled more strongly from the base body 2 than in the second extension section 3.8b. It is also noticeable that the spring part 3.1-3.8 is widened in some areas in the third extension section 3.8c compared to the second extension section 3.8b. According to the design in figure 1 this broadening, which is provided with the reference number 3.8d, is arranged terminally at a free end of the third extension section 3.8c. In addition, the spring part 3.1 - 3.8 also has an area-wide widening in the second extension section 3.8b, which in figure 1 is denoted by the reference numeral 3.8e. It has already been pointed out that the spring parts 3.1 - 3.8 or the tongues differ in terms of the length of the third extension section 3.8c, as can also be seen from the illustration in figure 3 and in particular from the presentation in figure 4 clearly shows.

Im looking at the figure 2 is now on the design of the anchoring parts 4.1 - 4.6 discussed in more detail. Each of the anchoring parts 4.1 - 4.6 is designed as a tongue protruding from the base body in an edge region of the base body 2, wherein - as shown - the anchoring part tongues protrude from an edge of the base body 2 which is opposite the edge of the base body 2 from which the spring part - Sticking out tongues. As exemplified by the anchoring part 4.6 in figure 2 designates, each anchoring part 4.1 - 4.6 has a first extension section 4.6a adjoining said edge region and a second extension section 4.6b adjoining the first extension section 4.6a. The relevant tongue (anchoring part 4.6) extends in the first extension section 4.6a approximately perpendicularly to the base body 2 away from it and in the second extension section 4.6b back to the base body 2, so that between the said extension sections 4.6a, 4.6b angle α < 90°, α ≈ 45°, as in figure 2 shown. In addition, the anchoring part tongues 4.1-4.6 have an incision or notch 4.6c on their terminal free edge, resulting in an approximately dovetail-shaped appearance. As becomes clear when looking at Figure 2, the anchoring parts 4.1 - 4.6 differ in terms of a dimension of the first extension section 4.6a, the connecting element 1 always alternating an anchoring part 4.1, 4.3, 4.5 with a relatively short first extension section 4.6a and an anchoring part 4.2 , 4.4, 4.6 with a relatively long first extension section 4.6a.

In figure 2 reference character B designates an effective width of the anchoring parts 4.1 - 4.6.

Important in connection with Figures 1 - 4 The connecting elements 1 described above and these have in common that an engagement direction of the anchoring part or anchoring parts 4.1 - 4.6, i.e. a direction in which the relevant anchoring parts 4.1 - 4.6 are introduced into a slot-shaped recess on the sink, is essentially approximately extends antiparallel to a direction of the spring force, which spring force results when the spring parts 3.1-3.8 are loaded in the direction of the base body 2 become. This is discussed in more detail below; however, this fact is also the one selected as an example figure 3 easy to remove: If according to the design of the connecting element 1 according to figure 3 the spring parts 3.1 - 3.8 are pressed inwards in the direction of the base body 2, the result is a spring force which is oriented essentially straight and perpendicularly away from the base body 2 of the connecting element 1. There is only a slight deviation due to the slightly oblique course of the tongues of the spring part in relation to the base body 2. The anchoring parts 4.1-4.6, on the other hand, protrude essentially perpendicularly from the rear side of the base body 2, as does the figure 2 can be seen well. This protruding direction of the anchoring parts 4.1-4.6 with respect to the base body 2 essentially corresponds to the engagement direction mentioned above. In this way, the engagement direction of the anchoring part or the anchoring parts 4.1-4.6 extends substantially antiparallel to the direction of the spring force. This is - as already mentioned - below in particular based on the figures 10 and 11 dealt with in more detail.

figure 5 shows a perspective overall view of the underside of a kitchen sink 10, which is made of a plastic or mineral cast material or a corresponding composite material. The sink 10 has, for example, a sink bowl 11 and a draining area 12 arranged next to the sink bowl 11, without the invention being limited thereto. In the edge areas on the underside of the sink, the sink 10 preferably has edge anchoring and bearing structures which are connected in one piece to the rest of the sink and which are figure 5 are provided with reference numeral 13. On the exact design is below based on the figures 7 ff.

In figure 6 shows schematically how a slit-shaped recess is created in the area of said anchoring and contact structures 13 with the aid of a suitable tool, preferably a diamond-tipped cutting disk 14, which extends at least over certain longitudinal areas of the anchoring and contact structure 13. In figure 5 Such slit-shaped recesses can be seen at reference number 15 .

figure 7 shows a more detailed representation of such a peripheral anchoring and bearing structure 13 with a slot-shaped recess 15 on the underside of the sink 10. The slot-shaped recess 15 has a width b that is sufficient to hold the connecting element 1 with its anchoring parts 4.1 - 4.6 (cf. figure 2 ) with the slit-shaped recess 15 to engage. In this case, B > b preferably applies, so that the connecting element 1 undergoes deformation in the region of the anchoring parts 4.1 - 4.6 when it is introduced into the recess 15 (associated with a reduction in the amount of the angle α; cf. figure 2 ), whereby the connecting element 1 is held securely in the recess 15. This is supported by the dovetail-like design of the anchoring parts 4.1-4.6, to which reference has already been made above. The anchoring parts 4.1 - 4.6 can effectively dig into the sink material with the tips in the region of their terminal free edge, so that the connecting elements 1 can no longer be easily removed from the sink 10 .

In figure 8 the process of bringing the connecting element 1 and sink 10 into engagement in the region of the recess 15 of the anchoring and contact structure 13 at the edge is shown in more detail. The connecting element 1 is pressed in the direction of the arrow with its anchoring parts 4.1-4.6 into the slot-shaped recess 15, as already described. In this context, it is necessary to form the depth T of the recess 15 deep enough so that the anchoring parts 4.1 - 4.6 can be completely introduced into the recess 15 until the connecting element 1 with its base body 2, which is also intended as a contact part for attachment is formed on the sink 10 against an outer bearing surface 16 of the anchoring and bearing structure 13 occurs. How also from figure 8 As can still be seen, the contact surface 16 according to the exemplary embodiment shown does not extend exactly at an angle of approximately 90° relative to a bearing edge 17 of the sink 10, but at an angle of 90°-β, where β can be approximately 15°. This corresponds to a geometric configuration of the connecting element 1 in terms of the angle between the anchoring parts 4.1-4.6 and the base body 2, as shown in FIG figure 8 shown. In this way, the connecting element 1 can be brought into contact with its base body 2 over its entire surface against the contact surface 16 of the anchoring and contact structure 13, such as the Figures 9 and 10 represent.

In figure 10 the situation is again schematically illustrated, according to which the engagement direction E of the anchoring parts 4.1-4.6 essentially extends approximately antiparallel to a direction of the spring force, which spring force is symbolized by an arrow F in FIG. It is particularly advantageous here that the loading of the spring parts 3.1-3.8 in the direction of the base body effectively coincides with the engagement direction of the anchoring parts 4.1-4.6, which contributes to an optimal fit of the connecting elements 1 on the sink 10.

In figure 11 Finally, an installation situation of the sink 10 in combination with a connecting element 1 on a worktop 20 is shown. The worktop has a cutout 21 for inserting the sink 10, which cutout 21 has a peripheral boundary surface 22. The connecting element 1 comes into contact with this boundary surface 22 in the area of the free end (reference number 3.8d, cf. figure 1 , figure 3 ) interacting as shown. The spring parts 3.1 - 3.8 are deformed in the direction of the base body 2 of the connecting element 1, resulting in a restoring force (spring force) counteracting the deformation away from the base body 2, as a result of which the sink 10 is fixed on or in the worktop 20. The different design of the spring parts 3.1 - 3.8 supports the fixing effect and ensures a certain tolerance compensation. The overlapping area of the support edge 17 of the sink 10 and the worktop 20 defines a sealing area that figure 11 denoted by the reference numeral 23. In this area, the sink 10 is preferably sealed off from the worktop 20 using silicone (silicone adhesive), which can be applied to the sink 10 and/or to the worktop 20 at the installation site. Due to the deformability of the spring parts 3.1-3.8, there is a tolerance of preferably about ±3 mm for the dimensioning of the worktop cutout 21. The thickness of the worktop is preferably at least about 12 and at most about 50 mm. The worktop 20 can be made from all common materials, in particular from wood, stone or suitable composite materials. Ultimately, the minimum thickness of the worktop 20 is only limited by the fact that there must be a secure interaction between the spring parts 3.1 - 3.8 and the worktop 20, as in figure 11 shown.

Claims (15)

1. Connecting element (1) for fastening a sink (10) to a worktop (20), which worktop (20) has a cutout (21) for insertion of the sink (10), which cutout (21) has a circumferential boundary surface (22), which connecting element (1) has: a base body (2) serving as an abutment part for abutment against the sink (10);

   a plurality of spring parts (3.1-3.8) projecting on a first side from the base body (2), which spring parts are configured to produce a spring force (F) acting away from the base body (2) when loaded in the direction of the base body (2); and

   at least one anchoring part (4.1-4.6) which projects from the base body (2) on a second side thereof opposite the first side and which is configured to engage in a slot-shaped recess (15) on the sink (10);

   in which an angle between an engagement direction (E) of the anchoring part (4.1-4.6) and the direction of the spring force (F) is at least 135 degrees, preferably at least 150 degrees, most preferably 180 degrees;

   in which the spring parts (3.1-3.8) are configured as tongues that project from the base body (2) in an edge region of the base body (2) and have a first partial extent (3.8a) adjoining the edge region and a second partial extent (3.8b) adjoining the first partial extent, the tongues extending in the first partial extent (3.8a) approximately perpendicularly to the base body (2) and in the second partial extent (3.8b) approximately parallel, or at an acute angle of less than 45 degrees, preferably less than 30 degrees, to the base body (2); and

   in which the spring parts (3.1-3.8) have a further, third partial extent (3.8c) which adjoins the second partial extent (3.8b) and in which the spring parts (3.1-3.8) are angled away from the base body (2) to a greater extent than in the second partial extent (3.8b);

   wherein the spring parts (3.1-3.8) differ from each other with regard to the angle between base body (2) and tongue in the second partial extent (3.8b) and/or a length of the third partial extent (3.8c).
2. Connecting element (1) according to claim 1,
   in which the spring parts (3.1-3.8) are widened in the third partial extent (3.8c), at least in some regions, relative to the second partial extent (3.8b).
3. Connecting element (1) according to claim 1 or 2,
   in which in the second partial extent (3.8b) the spring parts (3.1-3.8) have a widening (3.8e), at least in some regions.
4. Connecting element (1) according to any one of claims 1 to 3,
   in which the anchoring part (4.1-4.6) is configured as a tongue which projects from the base body (2) in an edge region of the base body (2) and has a first partial extent (4.6a) adjoining the edge region and a second partial extent (4. 6b) adjoining the first partial extent, the tongue extending in the first partial extent (4.6a) approximately perpendicularly to the base body (2) away from the latter and in the second partial extent (4.6b) back to the base body (2).
5. Connecting element (1) according to claim 4,
   in which the anchoring part tongue has an incision or notch (4.6c) at its terminal free edge.
6. Connecting element (1) according to any one of claims 1 to 5,
   comprising a plurality of anchoring parts (4.1 - 4.6), which preferably differ from each other with regard to an angle (α) between first partial extent (4.6a) and second partial extent (4.6b) according to claim 4 and/or with regard to a dimension of the first partial extent (4.6a).
7. Connecting element (1) according to any one of claims 1 to 6,
   manufactured as a stamped-bent part or laser-cut part from a metallic material, preferably steel, most preferably stainless steel.
8. Connecting element (1) according to any one of claims 1 to 7,
   in which at least one tab (5.1, 5.2) is provided on the base body (2), preferably at the end, which tab projects beyond the remaining base body (2), preferably widthwise.
9. Connecting element (1) according to any one of claims 1 to 8,
   in which at least one aperture (6.1, 6.2) is provided in the base body (2), preferably in the tab (5.1, 5.2) according to claim 8.
10. Combination of a sink (10) and at least one connecting element (1) according to any one of claims 1 to 9 arranged on the sink (10).
11. Combination according to claim 10,
    in which the sink (10) has, at least on its assembly underside, at least one anchoring and abutment structure (13) at the edge, with an abutment surface (16) extending at an angle of approximately 90 degrees with respect to an abutment edge (17) of the sink (10), and comprising a slot-shaped recess (15) in the abutment surface (16), which recess (15) extends parallel to the abutment edge (17) and is configured and provided for receiving the anchoring part (4.1-4.6).
12. Combination according to claim 11,
    in which the connecting element (1) lies with the base body (2) against the abutment surface (16) when the anchoring part (4.1-4.6) is received in the recess (15), the spring parts (3.1-3.8) projecting outwards away from the sink (10).
13. Combination according to claim 11 or 12,
    in which the anchoring and abutment structure (13) is frustoconical in cross-section and/or in which an anchoring and abutment structure (13) is provided on both long sides and/or short sides of the sink (10).
14. Combination according to any one of claims 11 to 13,
    in which the sink (10), preferably including the anchoring and abutment structure (13) according to claim 15, is made of a cast plastic material, a cast mineral material, or a corresponding composite material.
15. Combination according to any one of claims 11 to 14,
    further comprising a worktop (20), which worktop (20) has a cutout (21) for insertion of the sink (10), which cutout (21) has a circumferential boundary surface (22), with which boundary surface (22) the connecting element (1) cooperates with its spring parts (3.1-3.8) for fastening the sink (10).

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