WO2017158454A1

WO2017158454A1 - Flat dowel and method for mounting a flat dowel

Info

Publication number: WO2017158454A1
Application number: PCT/IB2017/051000
Authority: WO
Inventors: Josef Häringer; Christian Steinbrunner
Original assignee: Josef Häringer; Christian Steinbrunner
Priority date: 2016-03-14
Filing date: 2017-02-22
Publication date: 2017-09-21
Also published as: DE102016104597A1

Abstract

A fastening element (1) and a method for mounting same are disclosed. The fastening element (1) consists of two opposing and spaced elements (2) which have a flat design. At least one of the spaced elements (2) has, at a first end (4), a substantially linear contour (5). Both elements (2) have, at a second end (6), a convexly shaped contour (7), and a linearly movable middle part (8) is provided between the two elements (2) between the first end (4) and the second end (6).

Description

Flat dowel and method for attaching a dowel

The invention relates to a flat dowel.

Furthermore, the invention relates to a method for attaching a dowel in a wall, in a masonry or in a material.

The German patent application DE 195 01 449 has a round

Zwangspreizkeildübel on. In the Zwangspreizkeildübel a striking wedge is provided with a predetermined breaking point.

The German patent application DE 197 56 764 relates to a plug-in

Plastic with at least one shaft to be inserted into a borehole. Spreading segments are provided on the shaft in pairs, which are supported against the borehole wall in a pulling force acting on the shaft and wedged.

The German utility model DE 20 201 1 101 1 15 discloses a dowel with a longitudinal slot having shank. The shaft or at least a part of the shaft is oval-shaped.

European Patent Application EP 0 841 491 discloses a fastener insertable in a blind hole. Here are a sleeve with a

Stop flange and a shank part and an expanding mandrel provided with a head and a pull pin. This fastening element can be introduced for fastening a profile part in a blind hole of a cladding panel. By pulling the Aufweitdorns the shank part of the sleeve is radially expanded, so that the elevations in the form of a threaded portion in the

Press in the hole wall of the blind hole.

German published patent application DE 10 2013 204 704 A1 relates to a mounting element which can be fastened without tools in an opening of a component. The mounting element is not expandable in thickness and width extension and has on its outer side at least one limited by a boundary recess in the projecting from an edge region of the recess a resilient barb arm with protrudes a barb projection at its free end. At the

Passing through a tangible opening of the component, this leads to a curvature of the barb arm to form a force acting on the barb arm restoring force for engaging behind the opening of the component by the barb projection.

The German patent application DE 10 201 1 003 290 A1 discloses a

Concrete screw with a shank portion and a threaded portion disposed at the front end of the concrete screw and at least one

Spreizschlitz is provided. Furthermore, a spreading element is provided, which is the

Spreizschlitz is assigned such that the expansion element during the

Screw in widening the expansion slot.

The German patent application DE 27 41 422 discloses an expansion anchor with rectangular cross-section.

The German patent application DE 198 24 594 discloses a fastener with shaft, pivoting levers and retaining surfaces whose support surfaces over a large area abut a borehole wall and do not allow rolling movement of the retaining elements. This is achieved in that the pivot lever and holding surface are formed separately from each other and at least one pivotable pivot lever is arranged via elastic film hinges between a holding surface and the shaft.

German patent DE 934 472 DE discloses a holding device for leaves. A wedge is slidably disposed in a recess for clamping the leaves arranged in a longitudinal groove. The holder for the leaves is not a dowel in the context of the invention.

The German utility model DE 201 04 307 U1 relates to a rotary screw of two symmetrical screw halves, each having an external thread. Between the two screw halves, an insert plate with a toothed surface section can be inserted. The serrated surface portions act with corresponding serrated surface portions of the screw halves

together. The screw halves and the insert plate are not a dowel according to the invention. The German utility model DE 201 04 307 U1 relates to a

Fastening element for fastening a furniture fitting part. It is not

Flat dowel according to the invention disclosed.

The invention has for its object to provide a dowel, which is easy to install and holds securely in a wall or a material, the assembly of elements to be fastened on the dowel facilitates and a secure hold of the assembled elements is ensured.

This object is achieved by a flat dowel comprising the features of claim 1.

The invention is further based on the object to provide a method by which a dowel can be easily mounted in a wall, masonry or a material and the dowel securely holds in a wall or the material and facilitates the installation of elements on the dowel and a secure hold of the assembled elements is ensured.

This object is achieved by a method comprising the features of claim 13.

The flat dowel according to the invention comprises two opposite and spaced-apart and flat elements. The spaced elements have a substantially linear contour at a first end and a convex contour at a second end. Between the two spaced-apart elements, a linearly movable central part is provided. The linearly movable middle part is also parallel to the spaced ones

Moving elements. At least one retaining means connects the spaced apart elements. In each case a holding element engages through a corresponding slot of the middle part. The two spaced-apart elements and the central part form a unit due to the holding means. This has the advantage that the flat dowel can be mounted and transported as a unit. Thus, no parts of the dowel can be lost.

According to a possible embodiment of the invention, the middle part is linearly movable at least along the slot. By the linear movement is z. Legs Clamping the dowel causes in the masonry, so that the spaced-apart elements move substantially perpendicular to the linear movement of the central part. This leads to an increase in the height of the flat dowel and thus to a clamping.

According to a possible embodiment of the invention, the middle part between the two spaced-apart elements can be moved linearly and parallel to them so that, for mounting the flat dowel, the movement of the central part is directed towards the first end of the two spaced-apart elements.

According to a further embodiment of the invention, the middle part between the two spaced-apart elements can be linear and parallel to this movable so that the mounting of the flat dowel, the movement of the central part is directed towards the second end of the two spaced elements.

The flat dowel consists at least of the essential three parts: two flat and spaced elements and the linear and parallel to the

spaced elements movable center part. The spaced elements and the movable center portion have at a first end in the

Formed substantially linear contour.

In the unassembled state, the at least one first end of the at least one linearly movable central part projects beyond a first end of the spaced-apart elements. When assembled, a second end of the central portion has approximated a second end of the spaced elements.

According to a further embodiment of the invention, in the unassembled state, the at least one second end of the at least one linearly movable central part projects beyond a second end of the spaced-apart elements. When assembled, a first end of the central portion has approximated a first end of the spaced elements.

According to another possible embodiment of the invention, the spaced elements on their outer surfaces on a smooth surface. According to another possible embodiment of the invention, the

spaced elements on their outer surfaces a variety of

Formed hooking elements. The interlocking elements can be rigid and / or elastic. Likewise it is conceivable that a part of the

Verhakungselemente elastic and another part of the Verhakungselemente is rigid.

In order to achieve secure clamping of the dowel, an inner surface of each of the spaced elements has tapered surface segments which cooperate with opposing wedge-shaped portions of the central portion to create and maintain a clamping action of the dowel. The

beveled surface segments and / or the wedge-shaped portions each carry friction surfaces that prevent slipping back of the central part of the clamping position. The clamping action of the dowel is by a respective opposite

Movement of the two spaced elements to the outside (in the direction

opposite arrows) generated.

According to a further embodiment of the invention, the middle part at the first end has a tension element. The tension element is connected via a predetermined breaking point with the first end of the central part. The predetermined breaking point of the tension element, which can be gripped by a tool, ruptures at a defined force acting on the tension element. Thus, the assembly of the dowel is secured with a defined force.

A method for attaching a dowel in a wall or in a

Material is characterized by the following steps: that an elongated slot is made in the wall having a height corresponding to a height of the dowel and having a width corresponding to a width of the dowel, a base of the slot having a convexly shaped contour corresponds to the flat dowel; that a dowel is inserted into the slot, wherein the dowel consists of two spaced-apart elements and an intermediate, movable arranged central part and by means of a holding means is a unit; that for fixing the dowel in the wall, the middle part is moved between the spaced elements such that outer surfaces of the spaced elements jam the dowel in the slot; and

That an inner surface of each of the spaced elements has formed beveled surface segments opposed to wedge-shaped ones

Collaborate sections of the linear moving middle part, so that a

Clamping action of the dowel is generated by a movement of the two spaced elements in the direction of the opposite arrows, while the dowel is clamped to the outer surfaces of the spaced elements in the slot.

There are essentially two ways in which the clamping of the flat dowel in the masonry can be realized. For one thing, by inserting the

Center part on the second end of the two spaced elements out a

clamping effect of the dowel in the wall or the material can be effected. On the other hand, a clamping effect of the flat dowel in the wall or the material can be effected by a movement of the central part towards the first end of the two spaced elements.

According to a further embodiment of the method, at least one compensation element can be arranged on the respective outer surfaces of the spaced elements. This is the case when the slot for the dowel in height is higher than a height of the flat dowel to be fastened.

The flat dowel according to the invention can also be referred to as a fastening element. It is obvious to a person skilled in the art that the flat dowel according to the invention is introduced into a wall, wall or material in order to be attached thereto

To assemble objects. The function corresponds to that of a conventional round dowel. An advantage of the flat dowel according to the invention is that compared with a conventional round dowel during the assembly of a component (door frame or window frame), the position of the mounting hole on the component does not have to coincide exactly with the position of the dowel in the wall. Furthermore, the offers

Flat dowel according to the invention in comparison to the assembly of a component without dowels a secure and durable hold in a variety of materials. The flat dowel according to the invention can be made of plastic, metal or even a combination of the two.

Further advantages and advantageous embodiments of the invention are the subject of the following figures and their parts description.

They show in detail:

Figure 1 is a perspective top view of an embodiment of the

flat dowels according to the invention;

Figure 2 is a perspective plan view of a further embodiment of the flat dowel according to the invention;

Figure 3 is a side view of another embodiment of the dowel, wherein the central part is not inserted;

Figure 4 is a side view of the embodiment of Figure 3, in which the

Middle part is inserted;

Figure 5 is a side view of the embodiment of Figure 1 or 2, wherein the

Middle part is inserted;

Figure 6 is a side view of the further embodiment of the dowel with a stop, wherein the central part is not inserted;

Figure 7 is a side view of the embodiment of Figure 6, in which the

Middle part is inserted;

Figure 8 is a side view of the embodiment of Figure 1 with a

cover;

Figure 9 is a side view of the embodiment of Figure 1, in which the

Middle part is provided with a rail;

FIG. 10 shows a further embodiment of the end of the central part,

Figure 1 1 shows a further embodiment of the end of the central part; Figure 12 is an enlarged side view of the dowel with inserted middle part;

FIG. 13 shows a further perspective plan view of an embodiment of the flat dowel according to the invention;

Figure 14 is a side view of the flat dowel and its attachment in one

Wall;

Figure 15 - 17 different embodiments of the middle part;

Figure 18 is a representation of the introduction of a recess for insertion of the

Flat dowel;

Figure 19 different inserted into the masonry dowel;

Figure 20A is an illustration of a way in which an elongated mounting slot can be inserted into a solid material;

FIG. 20B shows a representation of a tool for fastening the flat dowel in FIG

Slot;

Figure 21 is an illustration of the possibility to attach the dowel in a masonry;

Figure 22 is an illustration of balancing elements for the dowel;

Figure 23 is an exemplary representation of the type of attachment of the dowel in a masonry and the introduction of the slots for this purpose;

Figure 24 shows a possibility for attaching retaining elements on a

Biscuit;

Figure 25 shows an embodiment of the first end of the flat dowel;

Figure 26 is an illustration of another possible use of the flat dowel;

Figure 27 is an illustration of a possible use of the middle part; Figure 28-30 representations of different embodiments of the middle part or of attachable in the middle part holding elements;

Figure 31 is an illustration of a tool for attaching the dowel and the special design of the central part thereof;

Figure 32 is an illustration of the attached with the tool flat dowel;

Figure 33 is an illustration of the portion of the central portion engaged by the tooling for attachment;

Figure 34 shows an embodiment of the flat dowel with a locking element for

Attaching a component;

Figures 35 and 36 different embodiments of the locking element for

Use on the component;

Figure 37 and 38 different embodiments of the dowel with

various locking elements;

FIG. 39 shows a further embodiment of the flat dowel;

Figure 40 is yet another embodiment of the dowel.

Identical or equivalent elements of the invention will be identical

Reference numeral used. The illustrated embodiments represent only embodiments of how a flat dowel can be configured. It is obvious to a person skilled in the art that the embodiments of the flat dowels and their attachments shown here are merely a selection of different ones

Possibilities are.

FIG. 1 shows a perspective plan view of an embodiment of a flat dowel 1 according to the invention. The flat dowel 1 consists of two

opposite and spaced apart elements 2, which via a

Holding means 10 are interconnected. Between the elements 2, a linearly movable middle part 8 is provided. The holding means 10 engages through the movable middle part 8 in order to interact with the two spaced-apart elements 2 in operative connection. The spaced-apart elements 2 and the Middle part 8 thus form a unit. This has the advantage that no parts of the multipart of the dowel 1 can be lost. Likewise, the unit facilitates the assembly of the dowel 1 in a slot (not shown here) in the wall or the material. In the embodiment shown here, a plurality of interlocking elements 14 is provided on the outer surfaces 12 of the spaced elements 2. The spaced-apart elements 2 are formed flat. At a first end 4 of each element 2, a substantially linear contour 5 is formed. At a second end 6 of each element 2 a convex shaped contour 7 is formed. On the linear contour 5, the flat dowel 1 has a width B1 and a height H1. From the linear contour 5 to a vertex 7S of the convex-shaped contour 7, the flat dowel 1 has a length L1. Preferably, the convex shaped contour 7 is a circular arc.

FIG. 2 shows a further embodiment of the flat dowel 1 according to the invention. The embodiment shown here differs from that in FIG. 1

illustrated embodiment in that the substantially linear region (linear contour 5) of the flat dowel 1 has a width B2 and a height H2. From the linear contour 5 to the vertex 7S (see FIG. 1) of the convexly shaped contour 7, the flat dowel 1 has a length L2. The flat dowel 1 represented by this embodiment has a greater length L2 than the flat dowel 1 of the embodiment shown in FIG. The embodiment shown in Figure 2 is suitable for slits extending deeper into the wall or material.

Figure 3 shows a cross section through a dowel 1, wherein the outer surfaces 12 of the spaced elements 2 are smooth (no Verhakungselemente are

intended). Between the spaced elements 2 is the middle part 8

intended. In the embodiment shown here, the middle part 8 is linearly movable from the first end 4 to the second end 6. The linear movement of the middle part 8 is represented by the arrow P8. The linear movement of the middle part 8 is provided in the embodiment shown in FIG. 3 by a slot 28 in the middle part 8. In general, the central part 8 is linear and parallel to the two spaced elements 2 of the flat dowel 1 in the direction of the arrow P8 movable. The inner surfaces 16 of the spaced elements 2 have a plurality of beveled surface segments 18 formed with wedge-shaped and opposite Collaborate sections 20 of the middle part 8. At the here shown

Embodiment overruns a first end 21 of the central part of the first end 4 of the two spaced elements 2 of the flat dowel 1. This is in this

Embodiment of the case when the dowel 1 is still inserted into the material or the wall.

In the cross sections of the flat dowel 1 shown in FIG. 4 and FIG. 5, the middle part 8 is completely inserted between the two spaced-apart elements 2. Thereby, a movement of the two spaced elements 2 is effected parallel to the holding means 10 (in the direction of the opposite arrows P2), so that they are pressed apart. The dowel 1 is thus clamped in the wall.

If the flat dowel 1 is inserted into a previously formed in a material slot, a clamping effect of the dowel 1 in the material (not shown here) is achieved by the insertion of the central part 8. When the central part 8 is inserted, the first end 4 of the spaced elements 2 is aligned with the first end 21 of the middle part 8. Likewise, the second end 6 of the aligned

spaced elements 2 with the second end 22 of the central part 8. In the embodiment shown in Figure 5, the interlocking elements 14 are provided on the outer surfaces 12 of the spaced elements 2. The insertion of the middle part 8 can be achieved in the embodiment shown in Fig. 3, for example, with a hammer. In addition, the slot 28 limit the linear movement of the middle part 8. This has the advantage that thereby a defined clamping force of the flat dowel 1 can be adjusted.

FIG. 6 and FIG. 7 show a further embodiment of the flat dowel 1. The two spaced elements 2 have formed over the entire width (see eg B1 or B2 of Fig. 1 or 2) of each of the spaced elements 2 a stop 23, which limits the insertion of the flat dowel 1 in the material. In the illustration of Figure 7, the middle part 8 is inserted and the dowel 1 is thereby clamped in the material.

In the representation of Figure 8, a decorative cover 24 is shown, which can be screwed or pressed into the first end 21 of the middle part 8. Of the

Flat dowel 1 is attached, for example, in a wall 25, the limitation by the dashed line is indicated. The stops 23 of the spaced elements 2 are applied to the wall 25 at. In the illustration of Figure 9, the middle part 8 at the first end 21 over the entire width (see z, B. B1 or B2 of Fig. 1 or 2) of the flat dowel 1, a guide rail 26 is formed. The stops 23 of the spaced elements 2 also lie against the wall 25 at. At the In

10, the guide rail 26 of the central part 8 is L-shaped. In the illustration shown in Figure 11, the guide rail 26 of the middle part 8 is also L-shaped, with the guide rail 26 is supported on the wall 25.

FIG. 12 shows an enlarged view of the flat dowel 1. In the unattached state, the first end 21 of the central part 8 projects beyond the first end 4 of each of the spaced-apart elements 2. Here, the special embodiment of FIG

beveled surface segments 18 of each of the spaced elements 2 and the particular configuration of the wedge-shaped portions 20 of the central part 8 shown. The chamfered surface segments 18 and the wedge-shaped portions 20 each carry friction surfaces 27 which, as shown here, e.g. as teeth or

Retaining wedges are formed so that a slipping back of the inserted middle part 8 is prevented. It is obvious to a person skilled in the art that the friction surfaces 27 can also be configured otherwise. It is only essential that the friction coefficient between the central part 8 and the two spaced elements 2 is so large that a slipping back of the middle part 8 is prevented. Thus, the insertion of the central part 8 is not hindered in this embodiment of the flat dowel 1 by the holding means 10, the middle part 8 has already formed the multiply-mentioned slot 28. In this embodiment of the flat dowel 1, the movement of the central part 8 in the direction of the second end 6 of the two spaced elements 2 to.

In the embodiment of the dowel 1 shown in FIG. 13, the second end 22 of the middle part 8 projects beyond the second end 6 of each of the spaced elements 2. At least one outer surface 12 of the spaced elements 2 carries hooking elements 14. It will be understood by one skilled in the art

Verhakungselemente 14 may be formed elastically. Thus, for example, put the hooking elements 14 when inserting the flat dowel 1 in the slot to the Outside surfaces 12 of the spaced elements 2 on. When trying to pull out the flat dowel 1 from the slot, the elastic hooking elements 14 hooked to the wall or masonry.

The middle part 8 has formed the wedge-shaped sections 20. The stops 23 of the dowel 1 prevent it from being pushed too far into the wall. The stops 23 extend over the entire width B13 of the two spaced elements 2. It is obvious to a person skilled in the art that the stops 23 of the flat dowel 1 can be dispensed with. The arrows P shown in FIG. 13 indicate the mutual movement of the central part 8 and the two spaced elements 2. Only after the movement is the clamping of the dowel 1 in the material or masonry (not shown here) given. The base of the slot in the masonry is thus also a stop for the middle part 8 of the flat dowel. 1 In the embodiment of the flat dowel 1 shown here, the movement of the central part 8 in the direction of the first end 4 of the two spaced elements 2 to.

Figure 14 shows how the dowel 1 of the embodiment of Figure 13 is mounted in the masonry. The dowel 1 is inserted or taken in a cut into the wall 25 slot 30. In this case, the second end 22 of the middle part 8 cooperates with a base 29 of the slot 30 and is thereby pushed between the two spaced-apart elements 2. As already mentioned above, the movement of the middle part 8 is limited by the holding means 10 or the slot 28 of the middle part 8. Another limit, the stops 23 of the two spaced elements 2 are available. The stops 23 are for the

Function of the flat dowel 1 not required.

Figures 15 to 17 show further embodiments of the dowel 1, wherein a part of one of the spaced elements 2 is removed to obtain an insight into the configuration of the central part 8. The middle part 8 has formed at least one slot 28, in each of which a holding means 10 is guided. The holding means 10 connects the two spaced elements 2, whereby the flat dowel 1 forms a unit and no parts thereof can be lost. When the middle part 8 is pulled to fix the flat dowel 1, the middle part 8 moves parallel to the slot 28. In the embodiment shown in Figure 15, the middle part 8 with a threaded rod 38 provided. The threaded rod 38 also simultaneously constitutes the tension element 31 for the central part 8. In the case of the embodiment shown in FIG

Embodiment, the middle part 8 is provided with a tab 39 in which a slot 40 is formed. In the slot 40, a tool can be used, with which then the dowel 1 can be effectively clamped. In the embodiment shown in Figure 17, the middle part 8 is also provided with a tab 39, which has formed a latching system 41. At the locking system 41, a tool (not shown) can be attached, with which the flat dowel 1 can be clamped.

Figure 18 shows several possibilities, such as a slot 30 e.g. in a wall 25, e.g. a brick wall, a concrete wall or the like can be formed. As a first option, a slot drill 42 can be used to form the slot 30 for the dowel 1 in the wall 25. The slot drill 42 is guided along the double arrow P for this purpose. Another possibility is that a widened cutting disk 43, the thickness of which substantially corresponds to the height H30 (see FIG. 21) of the slot 30, is used. Likewise, a tool with a cutting disc 43 is conceivable, with the several cuts are successively introduced into the wall 25, so that the required height H30 of the slot 30 is achieved for the dowel 1. In addition, a chain saw 45 or a stamper with diamond-set teeth can be used to bring a slot 30 deeper into the wall 25, so that a corresponding dowel 1 can be used. In the slot 30 made with the cutting disc 43, the chain saw 45 or the stamper, the flat dowel 1 can be used, in which the convex contour 7 at the second end 6 of the spaced elements 2 essentially corresponds to the curvature of the base 29 of the slot 30.

FIG. 19 shows the situation that the various flat dowels 1 have been inserted into the slits 30 previously cut in the wall 25 (see FIG. 23). After fixing the flat dowels 1 in the slots 30, in the dowel 1 at least one holding means 50, such as e.g. a screw, to be attached. The holding means 50 can be fastened under different orientations in the flat dowel 1.

Figure 20A shows a representation of a possibility, such as an elongated one

Mounting slot 30 L are introduced into a solid material or wall 25 can. For this purpose, one cuts with the cutting disc 43 a certain depth T in the material 25, such as concrete, and moves a tool (not shown) with the cutting disc 43 in the direction of the double arrow P. In the resulting elongated mounting slot 30 L is the corresponding elongated Flat dowel 1 used.

FIG. 20B shows an illustration of a tool 47 for fastening the tool

Flat dowel 1 in the slot 30. With the tool 47, which is designed as a pliers, the tab 39 of the dowel 1 is detected. By compressing the first arm 47i of the tool 47, the flat dowel 1 is clamped in the slot 30. By operating the second arm 47 _{2 of} the tool 47, the tool from the

Flat dowels 1 are released.

FIG. 21 shows a representation of the possibility of fastening the flat dowel 1 in a wall 25 or masonry. In the flat dowel 1 shown in the center of Figure 21, the cut for the dowel 1 has been made higher than the height of the dowel 1 to be fastened. The cut for the slit 30 has been made e.g. at least partially guided in a mortar tape 48. Thus at least one must

Compensation element 49 are used together with the dowel 1 to achieve a snug fit of the dowel 1 in the slot 30.

Figure 22 shows an illustration of various compensating elements 49, which serve for secure attachment of the dowel 1 in a slot 30 in the wall 25. The Verhakungselemente 14 on the outer surface 12 of the dowel 1 provide in the embodiment shown here for a secure fit of the compensating elements 49 on the dowel 1. There are different thickness compensation elements 49 are provided to allow optimal adaptation to the height H30 of each cut slot 30 , The compensating elements 49 may also be flat dowels 1. In this case, the outer surfaces 12 of the spaced elements 2 of the dowels 1 are formed such that the dowels 1 engage with the outer surfaces 12 in a form-fitting manner.

Figure 23 shows an exemplary representation of the type of attachment of the dowel 1 in a wall 25 (or masonry) and the introduction of the slots 30 for this purpose. The slots 30 may, for example, with a flex 54 with a widened cutting disc 43 in the wall 25 or with a plurality of juxtaposed sections with a conventional cutting disc 43 are introduced and have a width B30, which corresponds substantially to the width B1 or B2 of the flat dowel 1. To avoid dirt and / or dust, the Flex 54 is provided with a suction 55. The middle part 8 of the flat dowel 1 can be hammered in, for example by means of a hammer 52, in order to achieve the required clamping in the slot 30. Likewise, the spaced elements 2 of the flat dowel 1 can be hammered with the hammer 52. This is the case when the second end 22 of the middle part 8, the second end 6 of the spaced elements 2 projects beyond (see the embodiment of the flat dowel 1 of Figure 13). The dowel 1 can in the wall 25th

have different orientations. The slot 30 may be e.g. be cut diagonally. In addition, flat dowels 1 with and without clamping elements 14 can be used.

FIG. 24 shows a possibility for attaching retaining means 50 (screws, nails, etc.) in a flat dowel 1. Different types of retaining means 50 may be secured over the first end 4 of the spaced elements 2 and / or over the first end 21 of the central portion 8 of the dowel 1. It is obvious to a person skilled in the art that the holding means 50 are not limited to

Screws are limited.

In the embodiment of the flat dowel 1 shown in FIG

ensures that the holding means 50 exclusively in the middle part 8 of

Flat dowel 1 can be introduced. For this purpose, the two first ends 4 of the two spaced elements 2 are provided with a cover 56. The cover 56 may preferably be made of metal.

FIG. 26 shows an illustration of a further possible use of the flat dowel 1. The flat dowels 1 used are wider than the window or to be set

Door frame 57. This has the advantage that a position adjustment of the window or door frame 57 to be set is possible, so that the flat dowel 1 according to the invention provides a virtually infinite variety of screwing options for the holding means 50 (screws). Figure 27 shows a further illustration of a possible use and design of the middle part 8. The middle part 8 carries at the first end 21 and over the entire width distributed part of a hook and loop fastener 58. The middle part 8, as already described, by means of a hammer 52 between the two spaced

Kept elements 2 so that the dowel 1 is firmly seated in the wall 25. After the flat dowel 1 sits firmly in the wall 25, can on the one part of the first

Velcro 58 the second part of the hook and loop fastener 59 are attached. The second part of the hook and loop fastener 59 is attached to a cable duct 60 in the embodiment shown here. For a person skilled in the art, it goes without saying that the second part of the hook and loop fastener 59 can also be attached to other objects. The advantage of the first part of the hook-and-loop fastener 58 and the second part of the hook-and-loop fastener 59 is that the attached objects can be loosened easily and their configuration can be changed.

FIG. 29 shows the holding means 50, which is designed as a nail and carries the first part of the hook-and-loop fastener 58. Figure 30 shows the holding means 50, which is designed as a screw and carries the first part of the hook and loop fastener 58.

FIG. 31 shows an illustration of a tool 47 for attaching the flat dowel 1 in the wall 25. The middle part 8 has a tension element 31 at the first end 4

educated. To attach the dowel 1 in the wall 25, the tension element 31 by means of a pair of pliers 61 of the tool 47, which is movable in the direction of the arrow P, taken. The tension element 31 is connected to the central part 8 via a predetermined breaking point 62. On the predetermined breaking point 62 thus a defined force can be adjusted, with the middle part 8 is pulled, thus allowing a jamming of the flat dowel 1 on the spaced elements 2. Thus, the

Flat dowel 1 are fixed with a defined force in the wall 25. In the illustration shown in FIG. 32, the predetermined breaking point 62 is torn. The dowel 1 thus sits with a defined force in the wall 25. About the thickness of the

Predetermined breaking point 62 can thus be set the maximum of the force acting on the tension element 31. In the illustration shown in FIG. 33, after the breakage of the predetermined breaking point 62 between the tension element 31 and the central part 8, the pliers 61 become open. The tension element 31 can be disposed of and, for example, fed to a recycling process.

Figure 34 shows an embodiment of the dowel 1, the tab 39 of which is provided with a latching element for mounting a component 60 (e.g., a cable duct). The component 60 has formed a sliding rail 64, e.g.

is formed dovetailed. In the sliding rail 64, a sliding piece 66 can be arranged freely positionable to be adapted to the position of the tab 39. The sliding piece 66 cooperates latching with the tab 39 formed as a latching element. Likewise, a plurality of components 60 can be combined by means of the displacement rail 64.

Figures 35 and 36 show various embodiments of the

Each of the displacement pieces 66 has formed a counterpart 68 which cooperates with the displacement rail 64 to position the sliding piece 66 on the component 60

FIGS. 37 and 38 show various embodiments of the flat dowel 1. In the illustration shown in FIG. 37, the flat dowel 1 has two tabs 39, each of which carries a latching element. The locking element is formed on the outer sides of each tab 39. In the illustration shown in Figure 38 has the

Flat dowel 1 a tab 39 and the locking element is on the inner sides of the U-shaped tab.

FIG. 39 shows an embodiment of the flat dowel 1, in which the

spaced elements 2 and the middle part 8 have formed a recess 70. The recess 70 serves to receive a mounting member 72, which must lie deeper in a wall (not shown here) than the first end 4 of the spaced elements 2. The mounting member 72 is fixed to the central part 8 of the flat dowel 1. The mounting member 72 serves e.g. Fixing of service water connections.

FIG. 40 shows a further embodiment of the flat dowel 1. The two spaced elements 2 may be provided with channels (not shown) for attaching an adhesive to the outer surface 12 of the two spaced elements 2 and the second end 6 of the dowel 1. With the glue can the Flat dowels 1 additionally secured. Further, the middle part 8 can carry a rotatable eyelet 74 in which, for example, a cable tie 76 is held. The cable tie 76 is suitable, for example, for fastening in front of pipes and electrical lines.

LIST OF REFERENCE NUMBERS

1 flat dowel

2 spaced elements

4 first end

5 linear contour

6 second end

7 convex shaped contour 7S vertex

8 middle part

10 holding means

12 outer surface

14 hooking element

16 inner surfaces

18 beveled surface segments

20 wedge-shaped sections

21 first end

22 second end

23 stop

24 Decor cover

25 wall, material guide rail

friction surfaces

Long hole

Base

slot

elongated mounting slot tension element

threaded rod

flap

Long hole

ratcheting

Long hole drill

cutting wheel

chainsaw

Tool

first arm

second arm

mortar tape

compensation element

holding means

hammer 4 flex

5 suction

6 cover

7 window frame, door frame 8 first part of the hook and loop fastener 9 second part of the hook and loop fastener 0 cable duct, component

1 pliers

2 predetermined breaking point

4 sliding rail

6 sliding piece

8 counterpart

0 deepening

2 mounting element

74 eyelet

76 cable ties

B1 width

B2 width

B13 width

B30 width

H1 height H2 height

H30 height of the slot

L1 length

L2 length

P arrow

P2 arrow

P8 arrow

T depth

Claims

claims

Flat dowel (1) comprising: two opposite and spaced and flat

formed elements (2), wherein the spaced elements (2) at a first end (4) has a substantially linear contour (5) and at a second end (6) has a convex-shaped contour (7); and a central portion (8) spaced between the two

Elements (2) linearly and parallel to these on the first end (4) or on the second end (6) is movable, and wherein the central part (8) and the two spaced and flat elements (2) form a unit ,

Flat dowel (1) according to claim 1, wherein the middle part (8) between the two spaced-apart elements (2) is linearly and parallel to these movable, that for mounting the dowel (1), the movement of the central part (8) in the direction the first end (4) of the two spaced elements (2) is directed.

Flat dowel (1) according to claim 1, wherein the middle part (8) between the two spaced-apart elements (2) is linearly and parallel to these movable, that for mounting the dowel (1), the movement of the central part (8) in the direction the second end (6) of the two spaced elements (2) is directed.

Flat dowel (1) according to one of the preceding claims, wherein in the unassembled state of the flat dowel (1), the at least one first end (21) of the linearly movable central part (8) has a first end (4) of the two

projecting spaced elements (2) and wherein in the mounted state, a second end (22) of the central part (8) has a second end (6) of the spaced elements (2) has approximated.

5. Flat dowel (1) according to one of claims 1 to 3, wherein in the unassembled state of the flat dowel (1) the at least one second end (22) of the linearly movable central part (8) has a second end (6) of the spaced elements (2 ) and wherein in the assembled state, a first end (21) of the

Middle part (8) has approximated a first end (4) of the spaced elements (2).

6. dowel (1) according to one of the preceding claims, wherein at least one holding means (10) is provided, which spaced apart from each other

Elements (2) connects and wherein the holding means (10) engages in each case by a corresponding slot (28) of the central part (8).

7. Flat dowel (1) according to the preceding claims, wherein the spaced elements (2) on their outer surfaces (12) have a smooth surface.

8. Flat dowel (1) according to one of the preceding claims 1 to 5, wherein the spaced elements (2) on their outer surfaces (12) have formed a plurality of Verhakungselementen (14).

9. dowel (1) according to one of the preceding claims, wherein a

Inner surface (16) of each of the spaced elements (2) has formed chamfered surface segments (18), which with opposite

wedge-shaped sections (20) of the linearly moving central part (8) during

Insertion of the central part (8) between the two spaced elements (2) cooperate such that a clamping action of the dowel (1) by a respective opposite movement of the two spaced elements (2) in the direction of the arrows (P2) can be generated.

10. Flat dowel (1) according to claim 8, wherein the beveled surface segments (18) and / or the wedge-shaped portions (20) each have friction surfaces (27), which prevent the middle part (8) from slipping back out of the clamping position.

1 1 flat dowel (1) according to one of the preceding claims, wherein the central part (8) at the first end (21) has a tension element (31), which via a Predetermined breaking point (62) with the first end (21) of the central part (8) is connected, and wherein the tension element (31) by a tool (47) is gripped and thus the predetermined breaking point (62) at a defined on the tension element (31) acting Force breaks.

12. Flat dowel (1) according to one of the preceding claims, wherein in

mounted state at the first end (4) of the two spaced elements (2) and / or at the first end (21) of the central part (8) of the flat dowel (1) at least one holding means (50) can be fastened.

13. A method for attaching a dowel (1) in a wall or in a material (25), characterized by the following steps:

That an elongated slot (30) is introduced into the wall (25) having a height (H30) corresponding to a height (H1, H2) of the dowel (1) and having a width (B30) which is one width (B1, B2) of the flat dowel (1), and wherein a base (29) of the slot (30) corresponds to a convexly shaped contour (7) of the dowel (1);

• that the dowel (1) is inserted into the slot (30), wherein the dowel (1) as a unit of the two spaced-apart elements (2) and the central part (8) consists;

• that for fixing the flat dowel (1) in the wall (25), the central part (8) between the two spaced-apart elements (2) is linear and parallel to this moves; and

That an inner surface (16) of each of the spaced members (2) has tapered surface segments (18) cooperating with opposed wedge shaped portions (20) of the linearly moved center member (8), such that a clamping action of the

Flat dowel (1) generated by a movement of the two spaced elements (2) in the direction of the opposite arrows (P2) and thereby the dowel (1) with the outer surfaces (12) of the spaced elements (2) in the slot (30) is clamped.

14. The method according to claim 13, wherein by inserting the middle part (8) on the second end (6) of the two spaced elements (2) out causes a clamping effect of the dowel (1) in the wall or the material (25) becomes.

15. The method according to claim 13, wherein by a movement of the central part (8) on the first end (4) of the two spaced elements (2) out causes a clamping effect of the dowel (1) in the wall or the material (25) becomes.

16. The method according to any one of claims 13 to 15, wherein the spaced elements (2) on at least one of the outer surfaces (12) at least one compensation element (49) is assigned, when the slot (30) for the

Flat dowel (1) in its height (H30) fails higher than a height (H1, H2) of the flat dowel (1) to be fastened.

17. The method according to any one of claims 13 to 16, wherein a tension element (31) at the first end (21) of the central part (8) is formed and is connected via a predetermined breaking point (62) with the central part (8), so that with a Tool (47) the tension element (31) is taken and breaks the predetermined breaking point (62) upon reaching a defined force.

18. The method according to any one of claims 13 to 16, wherein at least one

Tab (39) at the first end (21) of the central part (8) is formed on which is pulled with a tool (47), so that the clamping effect of the flat dowel (1) in the material (25) is achieved.