WO2010057881A1 - Point-fastened adhesive bond and method for producing an adhesive bond - Google Patents

Abstract

What is described are a point fastener (10) for a fastening surface of a component, said fastener comprising a contact element (30) with at least one point of contact (60) and comprising a connection element (40), and an adhesive bond between said point fastener and a fastening surface at a component, as well as a method for producing an adhesive bond using said point fastener. The contact element (30) can be brought into lineal and/or surface contact with an imaginary surface (20) symbolizing a fastening surface at a point of contact (60). A recess (70) of the contact element (30) can be filled with adhesive. For the purposes of preliminarily fixing the point fastener (10) to the fastening surface, an annular space between a fixing surface (110) and the fastening surface is filled with a rapidly adhering adhesive. The point fastener (10) does not require any kind of hole to be made in the component for attachment to the component. It is insensitive to positional tolerances and no readjustment is necessary since the adjustment process takes place prior to the gluing. The component for which the point fastener (10) is provided is in particular a glass plate.

Description

 Subject: Point fastener, adhesive bond and method of making an adhesive bond

description

The present invention relates to a Punktbefestiger for a mounting surface of a component, comprising a contact element having at least one contact point and a connection element, wherein the contact element is formed so that it can be brought into contact with the mounting surface at the or each contact point, wherein the contact element in a the or each contact point adjacent inner region is provided with a closable by the fastening surface and then filled with adhesive recess having at least one filling opening and at least one overflow opening, and wherein the or each contact point lies on an imaginary surface, which with attached Punktbefestiger the mounting surface is.

A Punktbefestiger of the aforementioned type is known from EP 1 396 385 A1, which will be discussed in more detail below.

Punktbefestiger are for various special applications, for example from the magazine Innovative Facade Technology, Sondernr. 4, 2007, pp. 44-46. To attach a Punktbefestiger to a mounting surface, a blind hole is introduced into the mounting surface. The Punktbefestiger is designed so that it extends with a mandrel into this blind hole and is in contact with the mounting surface as a stop. The attachment can be done via a thread on the mandrel or by the application of an adhesive on the mandrel and in the blind hole. Such fixings are particularly especially there easily possible, where the mounting surface is formed of a plate made of an easily editable material and with a minimum required plate thickness. The plate thickness must be dimensioned so that the blind hole has a sufficient depth to absorb forces can. Conversely, the plate between the bottom of the blind hole and the opposite plate surface must have a minimum thickness. Special plate materials, whose long-term properties are still little known, can be prone to external influences such as sun or aging, causing the thin spot to discolor in the blind holes and thus obtain an aesthetic flaw. If a glass is used as the board material, the hole must be made prior to refining the glass, as subsequent processing, especially in the case of laminated glass (float glass), has hitherto hardly been possible or scarcely possible. The processing of the plates is not carried out accordingly at the installation site, but the plates must be made prefabricated with high precision.

In a Punktbefestiger known from the above-mentioned EP 1 396 385 A1 type, the contact between the contact element and the mounting surface is effected by a sealing ring made of an adhesive tape material. Such Abdichtringe have a variable thickness depending on the type of material and depending on the pressure exerted during positioning. The thickness of the sealing gap to be adjusted by the sealing ring is thus a variable size. Since the adhesive-filled recess, which is formed by the sealing gap, is thus variable, precise metering is not possible, so that it can not be guaranteed that the required adhesive strength is achieved in each case from point fastener to point fastener. After all, the adhesive coating coated on both sides but offers the advantage that the Punktbefestiger can be pre-fixed on the mounting surface.

In a known from DE 199 38 218 A1 T-connection of hollow profile bars such a prefixing is not possible because a T-connector, which is attached to a first, longitudinally passing hollow profile bar, before the Verkle- ben is mechanically prepositioned with a second hollow profile rod to be connected thereto. It is desirable to use portioned the adhesive, if necessary, with an adhesive cartridge, because the portioned use of the adhesive means predetermined joint strength and sealing effect. The pre-fixing required for this purpose must, however, be made possible by the overall mechanical construction in the known T-joint, in which a first hollow profile rod or the like effects the prefixing of the point fastener on a second hollow profile rod to be connected.

In a mounting system known from DE 101 20 388 A1, a pre-positioning of a contact element or basic body takes place by means of a double-sided releasably adhesive adhesive on the selected section of a wall provided on or in its support surface, ie the surface facing the wall.

In a device known from DE 44 16 884 A1 for the mechanical attachment of a solar generator module on a substructure, a holding plate in the edge region of its adhesive surface elastic art moldings (sealing rings), which should ensure a uniform adhesive spacing between the holding plate and solar generator module. In this way, however, a precise metering can not be achieved, as stated above.

From WO 2003 036 106 A1 a mounting system for attaching fasteners to a wall is known in which a Punktbefestiger has a base body which is provided with a recess in which a ring of sponge-like material is provided, the support surface for prefixing of the base body has an adhesive surface and whose thickness forms the boundary for an adhesive joint. Thus, the body can indeed be prefixed, but an exact Dosierbarkeit can thus not be achieved. The object of the invention is to develop a Punktbefestiger, an adhesive bond and a method for their preparation, so that the positioning of the attachment point can be done faster and more efficient at the installation site while achieving the required adhesive line can be ensured.

This is achieved with a Punktbefestiger of the type mentioned in the present invention, characterized in that the contact element is designed so that it can be brought directly to the or each contact point with the mounting surface in a line and / or surface contact, so that the or each contact point on the imaginary Area forms one or in each case a closed line or surface, and that the contact element in an outer region surrounding the contact point (s) has a fixing surface, which has a distance from the imaginary surface.

Characterized in that the contact element is formed so that it can be brought to the or each contact point directly with the mounting surface in a line and / or surface contact, so that the contact element on the imaginary surface forms one or each a closed line or surface results a clearly defined edition.

This edition serves to define an enclosed space as a fillable with adhesive recess and complete in itself. In this case, the shape which forms the contact point, freely selectable, as long as characterized at least one fillable recess is formed. For example, a portion of the pad may be formed as an arbitrarily centered surface, and another pad on the outer shape of the dot fastener may terminate with the mounting surface. The construction according to the invention also ensures that the adhesive which can be introduced into the fillable recess can not leak at the contact point. This achieves high dosing safety. The precise metering is crucial and guarantees that all Punktbefestiger according to the invention provide the required adhesive performance. Because of the direct contact of the contact element with the Fixing surface, namely, the bottom of the recess of the mounting surface on a matched to the adhesive defined distance as an adhesive gap and also the distance of the fixing surface of the imaginary surface has a well-defined value. The latter allows the prefixing of the point fastener by means of a preferably liquid adhesive which can be introduced between the fixing surface and the imaginary surface. The properties of the adhesive or adhesive provide the maximum adhesive strength in a specific layer thickness. If the distance of the fixing surface is matched to the liquid adhesive, the adhesive to be introduced is connected by capillary action on the entire fixing surface with the mounting surface. This special property can be used to achieve in addition to a good distribution of the adhesive and the prefixing of the Punktbefestigers by a quickly set first adhesive effect between the Punktbefestiger and the mounting surface.

In the point fastener according to the invention, if the or each contact point with the imaginary surface is directly in a circular or circular surface contact, the fillable recess is completely closed with respect to the fastening surface. The adhesive introduced into the fillable recess within this circumference or annular surface can achieve an enormously high adhesive performance over a small area. If this circular line or annular surface is mounted concentrically to the axis of the attachment point, the transmission of force from the attachment surface to the point fastener is almost ideal. For special applications, it is easily possible to provide an asymmetrical arrangement of the connection element. The structural design of the connection and the Punktbefestigers are set within the scope of the invention hardly limits.

Advantageous embodiments of the Punktbefestigers according to the invention form the subject of the dependent claims. In one embodiment of the Punktbefestigers the fixing in the outer area surrounding the contact point (n) in the outward direction an increasingly greater distance from the imaginary surface, so the applied adhesive can spread faster and more reliable between the fixing surface and the mounting surface and so even more ideal to ensure that an adhesive bond with large adhesive surfaces arises. The curing of the adhesive takes place at the points with the smaller distance between the fixing surface and the mounting surface fastest, which is equal to a catalyst effect, and then spreads in the shortest time in the outward direction, ie in the direction of greater distances. At the same time, this embodiment enables a better distribution of the adhesive, since the solidification of the adhesive begins at a defined location and the solidification direction and the spread of the adhesive can be structurally controlled.

If the fixing surface in the outer region surrounding the contact point (s) has a constant distance from the imaginary surface in the outward direction, a uniform adhesive effect is achieved over the entire fixing surface.

When the fixing surface is formed as a truncated cone surface, the adhesive to be applied between the fixing surface and the mounting surface on the entire circumference distributed in a short time. At the same time, when the adhesive is applied, any air bubbles that may be generated can be conveyed outward in a simple manner.

If, in a further embodiment of the invention, the point fastener has a stop projecting from the contact element in the direction of the imaginary surface, the point fastener can be easily and accurately positioned on the edge of a component on the fastening surface at a predetermined distance from the edge of the component. If the filling opening is arranged in the stop and is in communication with the recess via a channel, the adhesive can be introduced from the side opposite the mounting surface of the component into the recess.

In a further embodiment, it is also possible to make the filling opening so that the filling of the recess can be made from any page or location.

The design of the Punktbefestigers itself can be configured with any additional features. The stop provides, for example, a further bearing surface for a component to be fastened, a plate or glass. At the Punktbefestiger can also be attached elements that are suitable for hanging on a substructure.

If the recess, the or each contact point and the fixing surface arranged rotationally symmetrical to each other, a particularly efficient adhesive bond is achieved.

If the contact element at least at the height of the recess in cross-section circular, elliptical, square or rectangular, so good adhesive bonds are achieved, which also meet special aesthetic requirements.

If the contact element has at least one contact point, which is arranged concentrically around the recess, then the largest adhesive surface between the recess and the fastening surface is achieved.

If the imaginary surface is a planar surface, then this planar surface can be equated with a surface of any component with a planar surface. This can be any cubic body having a flat surface at the attachment point. In particular, plates of any hard material or with a hard surface treatment, the have a flat surface, suitable for the point fastener according to the invention. The plate can also be a glass plate or glass sheet in any quality. The surface finish can be high-gloss and smooth, but also enamelled or the like. It is important to ensure that the top layer has a solid state, that is od not from a liquid. Like. There.

In a further embodiment, if the imaginary surface is V-shaped in cross-section, the point fastener is suitable e.g. for special point fastenings on an inner or outer edge of a polygonal profile section. The Punktbefestiger still gives a closed contact point.

In a further embodiment, the imaginary surface is convexly or concavely circular in cross section. Thus, it is also possible to attach attachment points to components having a defined inner or outer radius. It should be noted that the contact point corresponds exactly to the mounting surface, i. exactly corresponds to the imaginary area.

If the or each contact point, which forms a closed surface on the imaginary surface, having an annular groove for receiving a sealing ring, can additionally use a sealing ring, which facilitates the sealing of the recess and an annular space formed between the mounting surface and the fixing surface, in particular it is a rough or uneven mounting surface.

When, in an adhesive joint between a Punktbefestiger, in particular a Punktbefestiger, as described above, is provided on a component mounting surface and an attached between the Punktbefestiger and the component adhesive and adhesive, the adhesive between a fixing surface of the Punktbefestigers and the mounting surface and a hardenable adhesive is mounted in a recess between a contact element and the attachment surface and inventions According to the contact element has a contact point, where it is with the mounting surface directly in a line and / or surface contact and separates the adhesive from the adhesive, the adhesive bond is designed so that at least two adhesive substances hold the connection together. The two adhesive substances, ie the adhesive and the adhesive can have completely different properties. For example, the adhesive may be fluid and the adhesive thick. As an adhesive, however, any other material with adhesive properties such as a double-sided adhesive tape od. Like. Be used. Adhesives and adhesives, as known for example from DE 10 2005 059 845 A1, appear suitable for use in the invention.

Advantageous embodiments of the adhesive bond according to the invention form the subject of further subclaims.

If the contact point, which is directly in surface contact with the fastening surface, has an annular groove and a sealing ring received therein, it is easier to produce a perfect adhesive joint in the case of a rough or uneven fastening surface.

If the adhesive has fast-adhesive properties, it can be achieved that the attachment point can adhere and be loaded immediately or at least in a short time on the attachment surface.

If the adhesive has slow curing properties, then after the curing time of the adhesive, an adhesive bond having very high load values can be transmitted as a transverse or tensile force from the joint.

In order to achieve high process reliability, a method for producing an adhesive bond of the type described above is proposed, which is characterized by the following steps: a) positioning the Punktbefestigers on the mounting surface of the component so that the contact element is directly with the mounting surface in line and / or surface contact, b) holding the Punktbefestigers on the mounting surface of the component, c) attaching the adhesive between the fixing surface and the mounting surface , d) curing the adhesive, e) filling the recess with the adhesive and f) curing the adhesive.

Advantageous embodiments of the method according to the invention form the subject of further subclaims.

As an adhesive, an adhesive with fast-bonding properties can be used. As a fast-stick adhesive, all adhesives are suitable which can build up over 50% of the maximum adhesive power within a few seconds and thereby hold the connection together. In particular, for quick adhesive, superglue od. Like. Suitable. However, quick-adhesive properties also have double-sided adhesive tapes or the like, which achieve the same effect.

As an adhesive, an adhesive with slow curing properties can be used. Adhesives which are based on epoxy resin, polyurethane or the like and are distinguished by high strength and longevity or aging resistance are particularly suitable. All adhesives can be used which have the mentioned properties and can be introduced into the recess through the filling opening.

If a fast-bonding adhesive, such as a special superglue, is applied between the fixing surface and the attachment surface and the recess is filled with a slow-curing adhesive, then this is ensures that from the time of application of the fast-adhesive adhesive by the adhesive always the minimum adhesive strength is achieved in the connection and the adhesive power is maintained in the long term.

It can also be used as an adhesive adhesive with a curing time of up to 72 hours. Slow-setting adhesives only reach their full adhesive power when fully cured, which usually takes several days. These adhesives are characterized by the fact that, even after a long period of use, that is to say over years and at best even over decades, hardly any or no decrease in the performance of the adhesive action will be apparent. It is particularly important to ensure that the selected adhesive is insensitive to weather, wind loads, thermal expansion and temperature differences. Thus, the compound according to the invention and the corresponding method can also be used in outdoor applications, typically in facade construction, in solar panels or the like. But compounds according to the invention are also particularly suitable for interior applications, for example for railings, room dividers or decorative designs, e.g. for lighting elements made of glass or other materials and in particular for components in which no processing such. Punching is possible because inside the component electrical, electronic or mechanical elements are attached, which could be injured or interrupted by a machining, such as in high-tech laminated glass with interconnect structures.

In summary, the following can be achieved with the invention achievable advantages:

Facade and interior construction in a more attractive design and high aesthetic requirements better cleaning ability, less tendency to fouling no blind hole in the component required the facade has no perceptible from the outside attachment points on the facade there are no thermal bridges, not even at the attachment point, since no blind hole is present uncritical positioning tolerances no readjustment necessary (adjustment before bonding) thinner components are fastened (plates or glass with less strength) lower material thickness brings lower static load and lower construction costs application of -30 to +65 degrees Celsius absorption of transverse loads suitable for photovoltaic facades suitable for covering exhibits with a glass plate high Ausreißwerte so that a load can be recorded, the wind speed of about 200 km / h corresponds

Embodiments of the invention are explained in more detail below with reference to the drawings. Show it:

1 shows a first embodiment of a Punktbefestigers according to the invention in a longitudinal sectional view,

1 a in an enlarged view a detail of the Punktbefestigers of FIG. 1,

Fig. 2 is a detail of a not shown, but like the first

1 embodiment according to the second embodiment of the Punktbefestigers according to the invention in a representation as in Fig. 1 a, 2a shows a variant of the second embodiment of FIG. 2, in which additionally a sealing ring is used,

FIGS. 3a-3c show various embodiments of the point fastener according to FIG. 1, each in a bottom view,

FIGS. 4a-4c show various further exemplary embodiments of the point fastener, in each case in a bottom view,

5 shows a further embodiment of the Punktbefestigers according to the invention in a cross-sectional view,

6 shows yet another embodiment of a point fastener according to the invention in an end view,

7 shows a still further embodiment of a point fastener according to the invention in a longitudinal sectional view,

8 shows a further embodiment of a point fastener according to the invention in a longitudinal sectional view,

9 shows a still further embodiment of a point fastener according to the invention in perspective view,

10 shows an embodiment of an adhesive bond between a facade or glass plate and a Punktbefestiger the type shown in Fig. 1,

11 is a perspective view of another embodiment of a point fastener according to the invention;

12 shows the point fastener according to FIG. 11 in adhesive connection with a facade or glass panel, FIG. 13 shows a first embodiment of an adhesive bond according to FIG

Invention, manufactured with a point fastener of the type shown in FIGS. 1 and 2, in a longitudinal sectional view,

13a shows an enlarged view of a detail of the adhesive joint of FIG. 13,

14 shows a second embodiment of an adhesive bond according to the invention with a Punktbefestiger, of which only the detail in Fig. 2 is shown, in a longitudinal sectional view,

Fig. 14a in an enlarged view a detail of the adhesive joint of FIG. 14, and

Figs. 15a-15e show an embodiment of a method according to the invention.

Fig. 1 shows a first embodiment of a total designated 10 Punktbefestigers according to the invention in a longitudinal sectional view. The Punktbefestiger 10 is a stamp-like part with a contact element 30 to which on the upper side in Fig. 1, a connecting element 40 is formed, which is provided in the embodiment shown in Fig. 1 with a thread. A component 140 such as a facade or glass plate (shown in FIGS. 10 and 12 or 13 and 14) can be bonded to the contact element 30 of the point fastener 10, which in turn via the connection element 40 od, for example, on a support frame. Like Facade is fastened. The contact element 30 is designed such that it can be brought into line contact with a mounting surface 25 of the component 140 at a contact point 60. The contact element 30 is in one of the line-shaped contact point 60 adjacent region (in Fig. 1 radially within the same) with a ungsflä- by the fastening. che 25 closable, circular in cross-section recess 70 is provided, which has a filling opening 120 and an overflow opening 130. The filling opening 120 and the overflow opening 130 are bores which extend parallel to a center axis 42 of the contact element 30 and the connection element 40. The contact point 60, which is a circular line in the embodiment of FIG. 1, lies on an imaginary surface 20, which is the attachment surface 25 when the Punktbefestiger 10 is set. The contact point 60 forms on the imaginary surface 20 a closed line, namely the aforementioned circular line. The contact element 30 has an area surrounding the contact point 60 with a radial width b (FIG. 1 a) a fixing surface 110, which has an increasingly greater distance from the imaginary surface 20 in the direction radially outward from the contact point 60 and thus is formed as a truncated cone lateral surface.

In a second embodiment of the Punktbefestigers 10, of which only the detail in Fig. 2 is shown (the rest of construction is the same as the Punktbefestigers 10 of FIG. 1), the contact element 30 is formed so that it at the contact point 60 with the mounting surface 25 and the imaginary surface 20 can be brought into a surface contact. The contact point 60 is in this case a closed annular surface. In contrast to the embodiment according to FIG. 1, the point fastener 10 in the embodiment according to FIG. 2 has a fixing surface 110 which, from the contact point 60 in the direction radially outwards, has a constant distance from the imaginary surface 20, as shown in FIG. 2 can be seen.

FIG. 2 a shows a variant of the second embodiment of the point fastener 10 according to FIG. 2, in which additionally a sealing ring 38 is used. In the contact point 60, an annular groove 36 is incorporated for receiving the sealing ring 38. The arrangement is made such that the annular groove 36 receives the sealing ring 38 entirely when the contact point 60 on the mounting surface (shown here by the imaginary surface 20) is placed. The cross section and the elasticity of the sealing ring 38 are accordingly chooses that the sealing ring 38 unfolds its sealing effect, but the contact point 60 does not keep at a distance from the mounting surface 25. The arrangement may further be made such that the contact point 60 comes to lie on the attachment surface 25 in the area radially outside and / or radially inside the annular groove 36. It is important in the Punktbefestiger 10 according to the invention that the contact point 60 without intermediate sealing ring or without intermediate double-sided adhesive tape with the mounting surface 25 can be brought into direct contact.

The Punktbefestiger 10 according to FIGS. 1 and 2 is suitably made as a turned part made of metal. In this Punktbefestiger the recess 70, the contact point 60 and the fixing surface 110 are arranged rotationally symmetrical to each other. The contact point 60 is arranged concentrically around the recess 70 in both cases.

The manufacture of the adhesive bond between the component 140 and the point fastener 10 will be described below with reference to Figs. 15a-15e.

Although the contact element 30 is circular in cross-section at the level of the recess 70 in the embodiments according to FIGS. 1, 1 a, 2, 3 a and 4 a, it may instead be elliptical, square or rectangular. In FIGS. 3a-3c, the contact point 60 is in each case a line in the form of a circle, for example an ellipse or a square.

4a-4c, which show further embodiments of the Punktbefestigers 10 according to the invention as Figs. 3a - 3c respectively only in a bottom view, Fig. 4a shows a contact element 30, the two concentric contact points 60, 62 has. According to the illustration in FIGS. 4b and 4c, the contact element 30 is formed in elliptical or square shape in cross section. In the bottom view respectively shown in FIGS. 4a-4c, the contact point 60 is in each case a closed line, which in FIG. 4a is a circle, in FIG. 4b an approximately elliptical line. shaped line and in Fig. 4c is a square. The contact points 62 are in FIGS. 4a-4c surfaces in the form of a circle, such as an ellipse or a square. These surfaces are parallel to the bottom of the recess 70, respectively.

Another embodiment of the Punktbefestigers 10 according to the invention is shown in Fig. 5 in a cross-sectional view. This Punktbefestiger 10 is in plan view, ie in a view in Fig. 5 from above in the region of the connecting element 40, which is shown here without thread, circular and in the region of the contact element 30 square or rectangular. The imaginary surface 20 is V-shaped in cross section. The component 140, to which the Punktbefestiger 10 according to FIG. 5 can be fastened, is a polygonal cross-section profile part. Although this profile part is not shown, its outer edge on which the mounting surface 25 is located for the attachment of the Punktbefestigers 10, but symbolized by the imaginary surface 20. The recess 70 is bounded at its opposite ends in each case by a pair of end walls 74, 75, of which a pair in Fig. 5 is visible. The fixing surfaces 110, which are planar surfaces, have an increasingly greater distance from the imaginary surface 20 from the contact points 60 toward the outside. At the contact points 60, this point fastener 10 with the imaginary surface 20 is in each case along a straight line in touch.

Another embodiment of the Punktbefestigers 10 is shown in Fig. 6 in an end view. This Punktbefestiger 10 is complementary to the Punktbefestiger 10 of FIG. 5 is formed. The Punktbefestiger 10 of FIG. 6 can be attached to an inner edge of a polygonal profile cross-section fastened. Whose inner contour is symbolized by the imaginary surface 20 in cross-section V-shaped. Incidentally, the structure of the Punktbefestigers 10 of FIG. 6 to that of the Punktbefestigers 10 of FIG. 5 is analogous.

Another embodiment of a Punktbefestigers 10 according to the invention is shown in Fig. 7 in a cross-sectional view. The construction of this point attachment 5 is analogous to that of the point fastener 10 according to FIG. 5, with the difference that in the embodiment according to FIG. 7 the imaginary surface 20 (and thus the attachment surface 25 not shown here) is convexly circular in cross section. This Punktbefestiger 10 is attached to a device 140 (not shown), which has an outer radius. Otherwise, the structure of the Punktbefestigers 10 of FIG. 7 to that of the Punktbefestigers 10 of FIG. 5 is analogous and therefore need not be described again.

Another embodiment of the Punktbefestigers 10 according to the invention is shown in Fig. 8 in a cross-sectional view. This embodiment is complementary to that of FIG. 7. The Punktbefestiger 10 of FIG. 8 is suitable for attachment to the inside of a circular cross-section profile, because the flat surface 20 is in cross-section concave circular arc. The Punktbefestiger 10 is therefore suitable for attachment to a device 140 having a corresponding inner radius, which is equal to the radius of the imaginary surface 20. The attachment surface 25 may be the outer surface in the Punktbefestiger 10 of FIG. 7, in the Punktbefestiger 10 of FIG. 8, the inner surface of a circular cylindrical in cross-section member 140.

Another embodiment of a Punktbefestigers 10 according to the invention is shown in Fig. 9. This Punktbefestiger 10 has essentially the structure of the Punktbefestigers 10 of FIG. 1. FIG. 9 clearly shows that the fixing surface 110 here (as in Fig. 1) is a conical annular surface, the radially outwardly increasingly greater distance from the Attachment surface 25, so that the annular space between the fixing surface 110 and the mounting surface 25 is triangular in cross section. 9, the contact element 30 projects in the direction of the imaginary surface 20 or the fastening surface 25 projecting beyond the imaginary surface 20 stop 32. The stop 32 can protrude from the fixing surface 110, as in Fig. 9, or could be attached or molded to the outer peripheral edge of the contact element 30. In addition, the filling opening 120 is arranged in the stop 32 and is connected via a channel 34 with the recess. mung 70 in conjunction. The recess 70 can therefore be filled with adhesive 50 from the front side of the stop 32 as seen in FIG. This is important, for example, if the Punktbefestiger 10 as shown in FIG. 10 is behind the component 140 and is hardly accessible. In Fig. 10, a Punktbefestiger 10 of the type shown in Fig. 9 is shown, but without the stopper 32. The connecting element 40 is shown in both figures without thread.

Another embodiment of the Punktbefestigers 10 according to the invention is shown in Fig. 11 in a perspective view. The Punktbefestiger 10 of FIG. 11 differs from the Punktbefestiger 10 of FIG. 9 only in that it is rectangular in shape and that the stop 32 extends over the corner. The filling of the recess 70 can take place from the side of the contact element 30, since here too the filling opening 120 is connected to the recess 70 via a channel 34.

Fig. 12 shows the point fastener 10 of Fig. 11 attached to a component 140, for example a facade or glass plate. Between the member 140 and the Punktbefestiger 10 a profile member 150 is disposed of rubber. Such a profile part 150 made of rubber also has the Punktbefestiger 10 of FIG. 9.

A first embodiment of an adhesive bond 90 according to the invention between a Punktbefestiger 10 and a component 140 with a mounting surface 25 is shown in Fig. 13. Fig. 13a shows a detail of the adhesive bond in Fig. 13 on a larger scale. An adhesive 100 is attached between a fixing surface 110 of the point fastener 10 and the attachment surface 25, as shown in Fig. 13a. In the recess 70 between the contact element 30 and the mounting surface 25, a curable adhesive 50 is attached. The Punktbefestiger 10 is formed in the adhesive joint of FIG. 13, for example, as the Punktbefestiger 10 of FIG. A second embodiment of an adhesive joint 90 according to the invention is shown in Fig. 14 and additionally in an enlarged detail shown in Fig. 14a. This embodiment differs from that of FIG. 13 in that here a Punktbefestiger 10 is used, in which the contact point 60 and the fixing surface 110 are formed as shown in Fig. 2, whereas the remaining structure of the Punktbefestigers 10 with the according to FIG. 1 matches.

An exemplary embodiment of a method according to the invention for producing an adhesive bond 90 will now be described with reference to FIGS. 15a-15e, in which process steps to be carried out successively are shown:

In FIG. 15 a, two method steps are carried out, namely first a step a) positioning of the point fastener 10 on the attachment surface 25 of a component 140 and then a step b) holding the point fastener 10 on the attachment surface 25 of the component 140.

In FIG. 15b, a step c) is carried out by attaching an adhesive 100 between the fixing surface 110 and the fixing surface 25.

In Fig. 15c, the execution of a step d) curing of the adhesive 100 takes place.

In FIGS. 15d and 15e, two method steps are carried out, namely a step e) filling the recess 70 with the adhesive 50 or a step f) curing of the adhesive 50. A time axis t indicated in FIGS. 15a-15e symbolizes that the aforementioned steps are carried out in chronological succession. The adhesive joint 90 produced by the method described above corresponds to that shown in FIGS. 14 and 14a.

In the above-described adhesive joint 90 and in the above-described method for producing such an adhesive bond has the Adhesive 100 expedient fast-adhesive properties and the adhesive 50 suitably slow-curing properties. As adhesive 50, an adhesive with a curing time of up to 72 hours can be used. For the adhesive 50 and the adhesive 100 suitable materials and material properties are already listed in the introduction and need not be repeated here.

LIST OF REFERENCE NUMBERS

0 point fastener 0 imaginary surface 5 fixing surface 0 contact element 2 stop 4 channel 6 ring groove 8 sealing ring 0 connecting element 2 center axis 0 adhesive 0 contact point 2 contact point 0 recess 2 bottom 4 end wall 5 end wall 0 adhesive bond 0 adhesive 0 fixing surface 0 Befü hope 0 overflow opening 0 component 0 profile part made of rubber

b range h distance t time axis

Claims

claims A point fastener (10) for a mounting surface (25) of a component (140), comprising a contact element (30) having at least one contact point (60) and a connection element (40), wherein the contact element (30) is designed such that it at the or each contact point (60) with the mounting surface (25) is in contact, wherein the contact element (30) in one or each contact point (60) adjacent the inner region with a through the mounting surface (25) closable and then with adhesive (50) fillable recess (70) is provided, which has at least one filling opening (120) and at least one overflow opening (130), and wherein the or each contact point (60) lies on an imaginary surface (20), which with set Punktbefestiger ( 10) is the mounting surface (25), characterized in that the contact element (30) is formed so that it at the or each contact point (60) directly with the mounting surface (25) in a Lini surface contact, such that the or each contact point (60) forms one or in each case a closed line or surface on the imaginary surface (20), and in that the contact element (30) in one the contact point (s) ( 60) surrounding outer region (b) has a fixing surface (110), the distance from the imaginary surface (20). 2. Punktbefestiger (10) according to claim 1, characterized in that the fixing surface (110) in which the contact point (s) (60) surrounding the outer region in the outward direction an increasingly greater distance from the imaginary surface (20). 3. Punktbefestiger (10) according to claim 1, characterized in that the fixing surface (110) in which the contact point (s) (60) surrounding the outer region in the outward direction at a constant distance from the imaginary surface (20). 4. Punktbefestiger (10) according to claim 1 or 2, characterized in that the fixing surface (110) is formed as a truncated cone surface. 5. Punktbefestiger (10) according to one of claims 1 to 4, characterized by one of the contact element (30) in the direction of the imaginary surface (20) projecting stop (32). 6. Punktbefestiger (10) according to claim 5, characterized in that the filling opening (120) in the stop (32) and via a channel (34) with the recess (70) is in communication. 7. Punktbefestiger (10) according to any one of claims 1 to 6, characterized in that the recess (70), the or each contact point (60) and the fixing surface (110) are arranged rotationally symmetrical to each other. 8. Punktbefestiger (10) according to claim 1, characterized in that the contact element (30) at least at the level of the recess (70) in cross-section circular, ellipsen, square or rectangular. 9. Punktbefestiger (10) according to claim 8, characterized in that the contact element (30) has at least one contact point (60) which is arranged concentrically around the recess (70). 10. Punktbefestiger (10) according to claim 8, characterized in that the contact element (30) has two concentric contact points (60, 62), between which the recess (70) is arranged. 11. Punktbefestiger (10) according to any one of the preceding claims, characterized in that the imaginary surface (20) is a plane surface. 12. Punktbefestiger (10) according to any one of claims 1 to 10, characterized in that the imaginary surface (20) in cross-section is V-shaped. 13. Punktbefestiger (10) according to any one of claims 1 to 10, characterized in that the imaginary surface (20) in the cross-section convex or concave circular arc-shaped. 14. Punktbefestiger according to one of the preceding claims, characterized in that the or each contact point (60) on the imaginary surface (20) forms a closed surface, an annular groove (36) for receiving a sealing ring (38). 15. Adhesive bond (90) between a Punktbefestiger (10), in particular a Punktbefestiger according to one of claims 1 to 13, a on a component (140) existing mounting surface (25) and between the Punktbefestiger (10) and the component (140) attached adhesive (100) and adhesive (50), wherein the adhesive (100) between a fixing surface (110) of the dot fastener (10) and the mounting surface (25) is mounted and wherein a curable adhesive (50) is mounted in a recess (70) between a contact element (30) and the attachment surface (25), characterized in that the contact element (30) has a contact point (60) to which it attaches to the attachment surface (25) is in direct line and / or surface contact and separates the adhesive (100) from the adhesive (5). 16. Adhesive connection according to claim 13, characterized in that the contact point (60) which is in a surface contact with the mounting surface (25) directly, an annular groove (36) and a sealing ring (38) received therein. 17. Adhesive bond according to claim 15 or 16, characterized in that the adhesive (100) has fast-bonding properties. 18. Adhesive bond according to claim 15 or 16, characterized in that the adhesive (50) has slow curing properties. 19. A method for producing an adhesive bond (90) according to any one of claims 15 to 18, characterized by the following steps: a) positioning the Punktbefestigers (10) on the mounting surface (25) of the component (140) so that the contact element (30) b) holding the Punktbefestigers (10) on the mounting surface (25) of the component (140), c) attaching the adhesive (100) between the fixing surface (110) and the mounting surface (25), d) curing the adhesive (100), e) filling the recess (70) with the adhesive (50) and f) curing the adhesive (50). 20. The method according to claim 19, characterized in that as adhesive (100) an adhesive with fast-bonding properties is used. 21. The method according to claim 19 or 20, characterized in that an adhesive with slow curing properties is used as the adhesive (50). 22. The method according to claim 19 or 20, characterized in that an adhesive with a curing time of up to 72 hours is used as the adhesive (50).