WO2008028607A2

WO2008028607A2 - Dowel

Info

Publication number: WO2008028607A2
Application number: PCT/EP2007/007660
Authority: WO
Inventors: Bruno Gruber
Original assignee: Bruno Gruber
Priority date: 2006-09-07
Filing date: 2007-09-03
Publication date: 2008-03-13
Also published as: WO2008028607A3

Abstract

Disclosed is a first type of dowel which is composed of at least two longitudinal braces and transversal braces. Such a dowel is compact such that a drilled hole can have the same diameter as or only a slightly larger diameter than a screw. A second type of dowel comprises a band-shaped base, at least one surface of which is provided with spaced-apart projections that extend at an angle to the longitudinal direction of the base. Such a dowel is easy to produce, has great retention force, and can be used for various screw types and sizes. A third type of dowel is composed of an elongate element in the form of a cylinder segment, the cross-section of which has the shape of a segment of a circle. The drilled hole can have a small diameter because the dowel is located only on one side of the screw. The non-symmetrical design prevents the dowel from rotating along with the screw when the latter is screwed in. Since the dowel is open on one side, thread grooves can be molded thereinto and/or a lubricant can be applied to the internal surface of the dowel. The screw thread digs in a claw-like manner into resilient material, while the dowel is retained on the other side by compression. A fourth type of dowel comprises a threaded bar encompassing an externally threaded section as well as a first and a second internally threaded element which are screwed onto the externally threaded section of the threaded bar. A locking element is placed on the threaded bar, between the internally threaded elements, by means of a continuous bore, is provided with at least one locking area, and is semi-rigid at least in the region of the continuous bore. Said dowel can be used for a range of drilled holes and requires only a small depth of the hollow space. Drilled holes require only a comparatively small diameter for mounting the dowel.

Description

dowel

The present invention relates to a dowel according to one of the claims 1, 33, 72 and 98.

Conventional dowels are expensive to manufacture because they have a complicated structure due to the flags or fins used to prevent rotation. The drill holes for the conventional dowels must be made with a much larger diameter than the diameter of the corresponding screw. The screw length is specified by the dowel, which itself has a certain length.

The invention has for its object to provide a dowel that is easy to produce and is universally applicable.

This object is achieved by the features specified in the patent claims 1, 33, 72 and 98.

An inventive dowel of a first anchor type consists of at least two longitudinal struts and these interconnecting cross struts. Such a trained dowel is designed to save space and has the advantage of ease of manufacture. Due to its structure, a borehole need not be made, or only slightly larger than the diameter of a screw.

A dowel according to the invention of a second anchor type comprises a band-shaped basic body which has on at least one surface a plurality of spaced-apart, extending at an angle to the longitudinal direction of the base body projections. Such a trained dowel is easy to produce, has a high holding power and is universally applicable for various types of screws and screw sizes.

An inventive dowel of a third anchor type consists of an elongated element in the form of a cylinder segment, which assumes the cross-section substantially the shape of a circle segment. Since the dowel is present only on one side of the screw, the hole can be made with a small diameter. Because of the asymmetrical design prevents the dowel rotates when screwing the screw. Since the dowel is open on one side, there is a simple way einzuformen thread grooves and / or apply a lubricant on the inner surface of the dowel. In a compliant material, such as Pressboard or wood, the thread of the screw digs in the resilient material, the dowel is held on the other side by pressing.

According to the invention, a cavity plug representing a fourth type of dowel for attaching to a mounting structure having a cavity comprises a threaded rod having a male threaded portion, a first female threaded member and a second female threaded member threaded onto the male threaded portion of the threaded rod. A locking element is mounted by means of a through hole on the threaded rod between the first internal thread element and the second internal thread element, has at least one locking region and is at least in the region of Through hole semi-rigid formed. Due to this construction, the cavity plug works for a wide range of holes of a wall and requires only a small cavity depth for its operation. For mounting holes with a relatively small diameter are required.

Further developments of the invention are specified in the subclaims.

The invention will be described in more detail with reference to the drawings. Show:

1 is a perspective view of a dowel according to a first embodiment of a first anchor type of the invention,

FIG. 2 is a perspective view of a dowel according to a modification of the embodiment of FIG. 1; FIG.

Fig. 3 is a sectional view of the anchor according to the first embodiment of the first

Anchor type in a borehole with a screw in a first screwed-in state,

Fig. 4 is a sectional view of the anchor according to the first embodiment of the first

Dowel type in a borehole with a screw in a second screwed state,

5 is a perspective view of a dowel according to another modification of the embodiment of Fig. 1,

6 is a sectional view of the anchor according to the embodiment of Fig. 5 in a borehole,

7 is a perspective view of a dowel according to a second embodiment of the first dowel type of the invention,

8 is a perspective view of the dowel of FIG. 7 in an assembled condition;

9 is a sectional view of the anchor according to the second embodiment of the first anchor type in a borehole,

10 is a sectional view of the anchor according to the second embodiment of the first anchor type in a well with screwed screw,

1 1 is a sectional view of the anchor according to the second embodiment of the first anchor type in a through hole,

12 is a sectional view of the anchor according to the second embodiment of the first anchor type in a through hole with a screw in a first screwed,

Fig. 13 is a sectional view of the anchor according to the second embodiment of the first

Dowel type in a through hole with a screw in a second screwed,

14 is a sectional view of a fastener with a dowel according to the first or second embodiment of the first anchor type of the invention, 15 is a perspective view of a dowel according to a third embodiment of the first anchor type of the invention in an initial state,

FIG. 16 is a perspective view of the anchor of FIG. 15 in an installed state; FIG.

17 is a perspective view of a dowel according to a fourth embodiment of the first anchor type of the invention in an initial state,

18 is a perspective view of the anchor of FIG. 17 in an installed state,

19 is a perspective view of a dowel according to a first embodiment of a second dowel type of the invention,

FIG. 20 is a perspective view illustrating the operation of the dowel of FIG. 19; FIG.

21 is a perspective view of a dowel according to a second embodiment of the second dowel type of the invention,

FIG. 22 is a perspective view of a dowel according to a modification of the embodiment of FIG. 21; FIG.

23A is a perspective view of a dowel according to a third embodiment of the second anchor type of the invention in an initial state,

23B is a perspective view of the dowel of FIG. 23A in an assembled state, FIG. 23C is a detail view of a portion of the dowel of FIG. 23A, FIG.

24A is a perspective view of a dowel according to a fourth embodiment of the second anchor type of the invention in an initial state,

FIG. 24B is a perspective view of the dowel of FIG. 24A in an assembled condition; FIG.

25A is a perspective view of a dowel according to a fifth embodiment of the second anchor type of the invention in an initial state,

25B is a perspective view of a dowel of Fig. 25A in a ready for mounting state,

FIG. 25C is a perspective view of the dowel of FIG. 25A in an assembled condition; FIG.

FIG. 25D is a perspective view of the dowel of FIG. 25A in a fully assembled condition; FIG.

26A is a side view of a dowel according to a sixth embodiment of the second anchor type of the invention in an initial state,

26B is a sectional view of the dowel of FIG. 26A in a first mounting state, FIG. 26C is a sectional view of the dowel of FIG. 26A in a second mounting state, 26D is a sectional view of the dowel of Fig. 26A in another application,

27 is a perspective view of a dowel according to a first embodiment of a third anchor type of the invention,

FIG. 28 is a plan view of a dowel according to a modified embodiment of FIG. 27; FIG.

29 is a perspective view of a dowel according to the embodiment of Fig. 28,

30 is a perspective view of a dowel according to a second embodiment of the third anchor type of the invention,

31 is a perspective view of a dowel according to a first modified embodiment of Fig. 30,

FIG. 32 is a perspective view of a dowel according to a second modified embodiment of FIG. 30; FIG.

33 is a perspective view of a dowel according to a third modified embodiment of FIG. 30;

34 is a perspective view of a dowel according to a fourth modified embodiment of FIG. 30;

FIG. 35 is a perspective view of a dowel according to a fifth modified embodiment of FIG. 30; FIG.

FIG. 36 is a perspective view of a dowel according to a sixth modified embodiment of FIG. 30; FIG.

37 is a sectional view of a dowel of the second embodiment of the third anchor type in an assembled state,

Fig. 38A is a schematic view of a cavity plug according to a first

Embodiment of the fourth anchor type of the invention prior to use,

FIG. 38B is a schematic view of the cavity plug of FIG. 38A when inserted into a bore of a wall. FIG.

38C is a schematic view of the cavity plug of FIG. 38 A entering into a cavity behind the wall,

FIG. 38D is a schematic view of the cavity plug of FIG. 38A during the locking operation; FIG.

39A is a perspective view of a locking element for the cavity dowel in an initial state,

FIG. 39B is a perspective view of the locking member of FIG. 39A in a condition of being inserted into the bore of the wall; FIG. 4OA to 4OC are perspective views of modifications of the locking member of Fig. 39;

FIG. 41 is a sectional view of a cavity plug of FIG. 38 with a board mounted thereon. FIG.

42 shows a sectional view of a cavity plug in an assembled state according to a second embodiment of the fourth plug type of the invention,

43A to 43D are perspective views of a locking element in individual assembly stages, and

Fig. 44 is a sectional view of the cavity plug of Fig. 42 in another assembled state.

An inventive dowel 10 according to a first embodiment of the first anchor type consists of two mutually parallel longitudinal struts 12 and a plurality of these interconnecting cross struts 14. The longitudinal struts 12 and cross struts 14 are integrally connected. In the preferred embodiment, the dowel 10 is made of a semi-rigid plastic, e.g. made of polyethylene or polyamide.

The cross-sectional area of the longitudinal struts 12 and the transverse struts 14 is selected so that the transverse struts 14 have a higher elasticity than the longitudinal struts 12. Thus, in one embodiment of the dowel 10, the longitudinal struts 12 have a diameter of 2.5 mm and the cross struts 14 have a diameter from lmm up. The overall width of the dowel 10 is 8.5mm, with the crossbars 14 spaced from each other by 6mm.

In the embodiment shown in FIG. 1, the dowel 10 has circular longitudinal struts 12 in cross section and rectangular cross struts 14 in cross section. In modifications of the illustrated embodiments, the longitudinal struts 12 may have a circular, oval, triangular, square, or rectangular cross-sectional shape, and the transverse struts 14 may have a circular, oval, triangular, square, or rectangular cross-sectional shape. The longitudinal struts 12 and the transverse struts 14 may have the same cross-sectional shape or different cross-sectional shapes.

In Fig. 1, the transverse struts 14 are flat. In a modified embodiment, which is shown in Fig. 2, the transverse struts 14 are formed transversely to the longitudinal axis of the dowel 10. In the illustrated embodiments of FIGS. 1 and 2, the cross struts 14 extend at right angles to the longitudinal struts 12. In modifications of these embodiments, the cross struts 14 may also extend at a different angle to the longitudinal struts 12 so that they extend obliquely between the longitudinal struts 12 ,

3 shows a sectional view of the dowel 10, which is screwed into a borehole 1 102 of a fastening structure 1 100 by means of a screw 1050. In the embodiment shown, the mounting structure 1 100 is a plate with which a further plate 1110 is attached.

The fastening operation of the arrangement shown in Figs. 3 and 4 will be described below.

A dowel 10 is inserted in the hand-compressed state of the two longitudinal struts 12 in the borehole 1 102 and relieved in the inserted state, so that it is based on the inherent elasticity returns to its original position and is supported on the wall of the borehole 1 102. When screwing in the screw 1050 (FIG. 3), this thread 1052 threads it, in particular into the longitudinal struts 12 of the plug 10 and presses them against the opposite side of the borehole 1 102. On the longitudinal struts 12 opposite side of the borehole 1102 of the mounting structure 1 100, the screw 1050 is supported and / or cuts there also threaded tracks.

When the screw 1050 reaches its head on the outer surface of the mounting structure 1 100 and is further rotated, the dowel 10 is drawn into the borehole 1 102 and knots there (Fig. 4).

By way of example, the space-saving arrangement of the dowel 10 in the fastening structure 1 100 should be clarified. Has e.g. the borehole 1 102 has a diameter of 6 mm, a screw 1050 (a wood screw) with a diameter of 6 mm can be screwed into the borehole 1 102 through the use of the anchor 10.

5 and 6 show an embodiment of the first anchor type, in which end portions 12a of the longitudinal struts 12 are angled to limit a pull-in of the anchor 10 in the wellbore 1 102 during insertion and when screwing the screw 1050.

The dowel 10 of the embodiment of the first dowel type of Fig. 7 is formed longer than the dowel 10 of the embodiments of Figs. 1 to 6, wherein the longitudinal struts 12 are angled at both end portions 12 a.

As shown in FIG. 8, the dowel 10 is manually bent transversely to its longitudinal axis and inserted into a borehole 1 102 of a mounting structure 1100 (FIG. 9). When screwing in a screw 1050 (FIG. 10), the longitudinal struts 12 press against the wall of the borehole 1102, wherein the screw 1050 with its thread 1052 cuts in particular into the longitudinal struts 12 of the plug 10.

Referring to FIGS. 9 and 10, the borehole 1102 is configured as a blind bore. The dowel 10 can also be inserted into a borehole 1102 which is formed as a through hole, as shown in FIGS. 11 to 13. In this embodiment, the screw 1050 is formed longer than the dowel 10, so that in the last screw rotations, where the head of the screw 1050 rests on the outer surface of the mounting structure 1 100, the dowel 10 is drawn into the borehole 1 102 and knots ( Fig. 13). In this embodiment, a plate 1 1 10 is attached to the mounting structure 1 100 by means of the screw 1050.

Fig. 14 shows an embodiment in which the dowel 10 is arranged in a mounting structure 1 100, which serves as a fastening element. The fastener may have a hexagonal, square, circular, elliptical or cross-sectional shape. The fastening element may be in the form of a nut or in the form of a rod. The base material of the fastener may be formed of plastic, wood, clay, concrete, marble or other suitable material. As an example, a cube-shaped cuboid of 3 cm side length may be provided, having on each side surface a borehole 1102 into which a dowel 10 is inserted. This fastening element formed in this way can serve as a corner connector in the assembly of frames, whereby this is held by hand during assembly. In an embodiment of the fastener having a hexagonal cross section, a conventional open end wrench may be used during assembly. The dowel 10 according to the embodiment of the first anchor type of FIGS. 15 and 16 has four longitudinal struts 12, of which two longitudinal struts 12 are connected to cross struts 14 and wherein the inner longitudinal struts 12 is connected to a film hinge 16. The dowel 10 is brought by folding along the longitudinal axis in the region of the film hinge 16 from the initial state of Fig. 15 in the installed state of Fig. 16. With such a dowel 10, a screw 1050 screw (wood screw) with its thread cuts 1052 thread tracks mainly into the longitudinal struts 12.

By way of example, the space-saving arrangement of the plug 10 according to the embodiment of FIGS. 15 and 16 in the fastening structure 1100 will be clarified. Has e.g. the borehole 1 102 has a diameter of 8 mm, a screw 1050 (a wood screw) with a diameter of 8 mm can be screwed into the borehole 1 102 through the use of the anchor 10.

In a different embodiment, two dowels 10 of the embodiment of FIG. 1 or 2 can be used opposite each other in a borehole 1 102, wherein the screw 1050 clamps between two dowels 10 and the four longitudinal struts 12 press against the wall of the borehole 1 102 ,

The dowel 10 according to the embodiment of FIGS. 17 and 18 of the first anchor type has five longitudinal struts 12, which are each connected to cross struts 14. The dowel 10 is brought from the initial state of Fig. 17 in a hollow cylindrical shape, as shown in Fig. 18. With such a dowel 10, a screw 1050 (wood screw) screwed with its thread 1052 mainly cuts thread tracks into the longitudinal struts 12.

By way of example, the space-saving arrangement of the dowel 10 according to the embodiment of FIGS. 17 and 18 in the attachment structure 1100 will be clarified. Has e.g. the borehole 1 102 has a diameter of 10 mm, a 1050 diameter screw (a wood screw) with a diameter of 10 mm can be screwed into the borehole 1 102 through the use of the anchor 10.

In all embodiments, the dowel 10 may be longer than the borehole 102 and, if necessary, the protruding end cut off. Also, the end of the dowel 10 may protrude from the attachment structure 1 100, with the protruding portion being used as an eye or hook.

In the preferred embodiment, the dowel 10 is manufactured by a continuous casting process and then cut to length and, if necessary, to width. According to a preferred embodiment, end portions 12a of the longitudinal struts 12 are bent over to achieve the angled shape.

As a material, a grid, which is commercially prepared as an interlayer grid and serves as a surface scratch protection for heavy parts, or a grid pipe for filtering purposes can be used.

The dowel 10 is suitable both for fixing wood screws, metal screws or nail screws. There is no risk when using the anchor according to the invention that the dowel slips into the borehole or rotates in the borehole. For screws with a long unthreaded shaft short dowels can be used, the shank diameter of these screws can correspond to the diameter of the borehole without causing there a splay.

As shown in Fig. 19, a dowel 1 10 of a second anchor type comprises an elastic band-shaped base 1 12 having a mounting portion 114 for insertion into a well 2100 (see Fig. 20) and a stopper portion 1 16 for abutment with a not shown End face of a wall containing the borehole 2100 has. The abutment portion 116 is formed at an angle (e.g., 90 °) to the attachment portion 14 and serves to prevent the anchor 110 from slipping into the bore 2100.

In the region of the fastening portion 114, the dowel 1 has 10 longitudinal struts 118 extending longitudinally along the side edges, between which extend a multiplicity of protrusions 120 which are arranged on one of the surfaces of the main body 12. The projections 120 extend at an angle of 90 ° to the side edges of the base body 112 and are arranged at regular intervals from one another. The projections 120 have a sawtooth-shaped cross-section.

The projections 120 have in modified embodiments a semicircular, semi-oval, trapezoidal or triangular cross-section. The projections 120 having a triangular or sawtooth-shaped cross-section may be formed so that the tip is centered toward the end having the stopper portion 16 or to the opposite end.

In the embodiment of Fig. 19, the dowel 1 10 has a width of 5mm, and the protrusions 120 are spaced 1 to 2mm apart. Such a dowel 110 is used to attach a wood screw with a thread diameter of 6mm in a hole 2100 with a diameter of 6mm.

The mode of operation of the plug 110 will be explained in more detail with reference to FIG. 20.

The dowel 110 is inserted into the well 2100 until the abutment portion 16 reaches the end face of the wall containing the well 2100. Thereafter, a screw is inserted into the hole 2100 and screwed. In this case, the screw is supported on one side of the borehole 2100 and presses a thread into the longitudinal struts 118 and the projections 120 opposite one another, wherein the dowel 1 10 in the region of the mounting portion 1 14 is pressed firmly against the wall of the borehole 2100 and the screw firmly anchored in the well 2100.

Fig. 21 shows another embodiment of the anchor 1 10 of the second anchor type of the invention. This dowel 1 10 differs from the embodiment shown in Fig. 19 in that it has two fastening portions 1 14 A and 1 14 B, which are interconnected via a connecting portion 122. The connecting portion 122 is in the preferred embodiment, a hinge connection, which allows pivoting of the two fastening portions 1 14A and 1 14B toward and away from each other.

In the preferred embodiment, the two mounting portions 1 14 A and 1 14B are integrally connected by means of a film hinge. The two Fastening sections 1 14A and 1 14B have the same length or may be formed differently long.

In this embodiment, a screw in both mounting portions 1 14A and 1 14B presses a thread in the longitudinal struts 1 18 and the projections 120 a. By arranging the attachment portions 114A and 114B in a borehole 2100 on both sides, a smaller diameter screw, e.g. a screw of 5mm thread diameter for a hole 2100 with a diameter of 6mm.

Fig. 22 shows a modified embodiment of the anchor 110 of Fig. 21. In this embodiment, the attachment portions 14A and 14B are made to have different lengths. This arrangement has the advantage that in a long screw with a short thread anchoring is made only in the threaded portion, the screw shaft causes little or no wall pressure.

Furthermore, the stopper portion 16 is formed with a mounting hole 124, e.g. used to attach a string.

The connecting portion 122 may be made with such a material thickness that a screw cuts or ruptures this connecting portion 122. In a modified embodiment, the connecting portion 122 may be provided with a through-hole penetrated by the screw.

FIG. 23A shows an embodiment of the second anchor type anchor 110, which includes the attachment portion 14 and a loop portion 130. The loop portion 130 has an eyelet portion 132 having a through hole 134. The attachment portion 14 and the loop portion 130 are integrally formed.

In Fig. 23B, a mounting state of the plug 110 in a borehole 2100 is shown. The attachment portion 14 of the anchor 110 is inserted into the borehole 2100 while the loop portion 130 is formed into a loop such that the through-hole 134 in the eyelet portion 132 is aligned with the borehole 2100. A screw 2102 is passed through the through hole 134 and bolted to the mounting portion 1 14. The operation is otherwise the same as the embodiment of FIG.

Fig. 23C shows a modification of the embodiment of Fig. 23A in which the eyelet portion 132 is dimensioned so that a plurality of through holes 134 (in the shown modified embodiment, three through holes 134) are provided extending in the longitudinal direction of the main body 12. As a result, a different loop width can be set.

The dowel 110 of FIGS. 23A to 23C, in the preferred embodiment, serves as a cable tie, but may also have a different purpose, e.g. to hold a hanger.

Fig. 24A shows a dowel 1 10 of the second anchor type, which differs from the embodiment shown in Fig. 23 A A in that it has two fastening portions 1 14A and 1 14 B, which are interconnected via a connecting portion 122. The connecting portion 122 is in the preferred embodiment, a hinge connection, which allows pivoting of the two fastening portions 1 14A and 1 14B toward and away from each other. In the preferred embodiment, the two mounting portions 14A and 14B are integrally connected by means of a film hinge. The two attachment portions 1 14A and 1 14B have the same length or may be formed differently long.

In this embodiment, a screw 2102 shown in FIG. 24B presses threads into the protrusions 120 in both attachment portions 114A and 114B. The stopper portion 116 is formed at an angle (e.g., 90 °) to the attachment portion 14B and serves to prevent the dowel 110 from slipping into the bore 2100.

FIGS. 25A to 25D show another embodiment of the second anchor type anchor 110, the two attachment portions 14A, 14B, a loop portion 130 interposed therebetween and connected to the attachment portions 114A, 114B via connecting portions 122. FIGS each having a stopper portion 1 16 at the respective attachment portion 114A, 1 14B. In the region of the loop portion 130, the dowel 110 also has projections 120.

As shown in FIGS. 25B and 25C, the two attachment portions 1 14A, 1 14B are bent at the portions of the connection portions 122, each attachment portion 114A; 1 14B and a portion of the loop portion 130, also for attachment, inserted into a respective wellbore 2100, with a portion of the loop portion 130 protruding from the wall 21 10, and for mounting e.g. of cables. The stopper portions 116 serve to prevent the dowel 110 from slipping into the holes 2100 while the screws 2102 are being screwed in (see FIG. 25D).

FIGS. 26A to 26C show a further embodiment of the invention, in which a hook 140 is integrally formed on the dowel 110. The dowel 1 10 has two attachment portions 1 14 A, 1 14 B, which are connected to each other via a connecting portion 122, and a stopper portion 116 which is connected via a connecting portion 122 with the attachment portion 1 14 B. Furthermore, a plurality of notches 142 are provided between the hook 140 and the attachment portion 114A, the purpose of which will be explained below.

The assembly of the dowel 110 according to the embodiment of FIGS. 26A to 26C will be explained below. As shown in FIG. 26B, the attachment portion 1 14B is bent toward the attachment portion 1 14A in the region of the one connection portion 122, and the abutment portion 16 is bent in the region of the other connection portion 122. Thereafter, the dowel 1 10 is inserted into the well 2100 and a screw 2102 is screwed (Fig. 26B).

After screwing the screw 2102 into the dowel 110, the hook 140 is set over the screw head by means of the indentations 142, so that the screw head of the screw 2102 is covered by the hook 140 (FIG. 26C).

The connecting portions 122 and the notches 142 may be the same, for example in the form of film hinges formed. Fig. 26D shows a modification of the embodiment of Fig. 26A. Here, the hook 140 is curved in the opposite direction and has no notches 142.

The dowel 1 10 is made of plastic, preferably nylon, polyamide or polyethylene.

In one embodiment, a known cable tie can be used as a dowel.

For screwing into the dowel 1 10 can serve wood screws, machine screws or driving screws. When using machine screws, a knotting effect can be achieved which results in even better attachment of the screw 2102 in the well 2100.

Modifications of the illustrated embodiments of the second anchor type are possible. Thus, the projections 120 may be arranged on both opposite surfaces of the main body 1 12. As a result, at the contact surface between the projections 120 of the anchor 1 10 and the surface of the borehole 2100 increased friction is achieved, which improves the holding force of the anchor 1 10 in the well 2100.

In another modification, the distances between the projections 120 in different zones of the mounting portion 1 14 are different in size. In another modification, the distances are formed in the longitudinal direction growing or irregular.

Although in the embodiments shown, the projections extend at right angles (at an angle of 90 °) to the side edges, deviating angles are provided in other embodiments thereof.

Although the projections 120 in the embodiments shown have the same cross-section over their entire length, also projections 120 which have a varying cross-section over their length, are possible.

In a further embodiment, the base body 1 12 is provided in the region of the projections 1 18 with a lubricant.

As shown in Fig. 27, a dowel 210 of the third dowel type according to the present invention consists of an elongated member in the form of a cylinder segment which is substantially in the form of a circle segment in cross section. A first longitudinal side 212 and a second longitudinal side 214 extend from a first end face 216 to a second end face 218, wherein in a first region near the first end face 216, the wall thickness over the entire peripheral portion is equal, while in a second region, which differs from extends the first area to the second end face 218, the wall thickness increases from the first longitudinal side 212 to a circumferential center and decreases from this to the second longitudinal side 214.

Although not shown, the wall thickness may increase from the first face 216 to the second face 218.

In the embodiment of FIG. 27, the dowel 210 has on its inner surface 210a a recess 220 which extends from the first end face 216 to the second end face 218 rejuvenated. In a modification of this embodiment, the recess 220 from the first end face 216 to the second end face 220 throughout the same dimension.

The recess 220 is formed in a semicircular shape, a semi-oval shape, or another shape.

The dowel 210 has on the inner surface 210a a group of thread grooves 222 which have the advantage that screwing in a screw 250 (see Fig. 37) is much easier than conventional dowels due to the lower frictional forces.

Further, in the preferred embodiment, in addition to the arrangement of the thread grooves 222, the inner surface 210a of the plug 210 is provided with a lubricant. In a modified embodiment, no thread grooves 222 are provided and only one lubricant is applied to the inner surface 210a of the plug 210. The lubricant serves to further reduce the frictional forces between the dowel 210 and an inner wall of a borehole.

In the embodiment shown, circumferential grooves 224 are provided on an outer surface 212b of the plug 210, which serve to improve the pressing operation on the inner wall of a borehole.

In the embodiment of FIGS. 28 and 29, the dowel 210 has a mounting hole 226 in a region near the first end face 216. The mounting hole 226 is used to connect an object with the dowel 210, so that the use of screw hook or similar components is unnecessary.

The dowel 210 of the embodiment of Fig. 39 consists of an elongated element in the form of a cylinder segment, which assumes in cross-section substantially the shape of a circle segment. In this embodiment, the wall thickness is the same over the entire circumferential section from the first longitudinal side 212 to the second longitudinal side 214.

In the region of the first end face 216, the dowel 210 has an angled section 216a which is bent transversely to the longitudinal axis of the dowel 210 and serves as a stop when being inserted into a wall. In addition, the strength of the plug 210 is increased by the angled portion 216a.

The embodiment of Fig. 31 differs from the embodiment shown in Fig. 30 in that the inner surface 210a has a plurality of thread grooves 222.

The dowel 210 of the embodiment of Fig. 32 consists of an elongate element in the form of a cylinder segment, which assumes in cross-section substantially the shape of a circle segment. In this embodiment, the wall thickness is the same over the entire circumferential section from the first longitudinal side 212 to the second longitudinal side 214.

In the area near the first end face 216, the dowel 210, as the embodiment of FIGS. 28 and 29, a mounting hole 226 on.

The dowel 210 of the embodiment of FIG. 33 differs from the dowel 210 of the embodiment of FIG. 32 in that the area near the first end face 216 having the mounting hole 226 is bent transversely to the longitudinal axis of the dowel 210. The dowel 210 of the embodiment of Fig. 34 consists of an elongated element in the form of a cylinder segment, which assumes the cross-section substantially the shape of a circle segment. In this embodiment, the wall thickness is the same over the entire circumferential section from the first longitudinal side 212 to the second longitudinal side 214.

In the area of the first end face 212, the dowel 210 has a hook 228 which extends along the longitudinal surface of the dowel 210.

The dowel 210 of the embodiment of Fig. 35 differs from the dowel 210 of the embodiment of Fig. 34 in that the portion near the first end face 216 having the hook 228 is bent.

The dowel 210 of the embodiment of Fig. 36 differs from the dowel 210 of the embodiment of Fig. 34 in that the dowel 210 has a suspension hook 230 which is bent transversely to the longitudinal surface of the dowel 210.

FIG. 37 shows the dowel 210 inserted into a wellbore 240 of a wall 242 with a screw 250 threaded between the dowel 210 and the wellbore 240. The dowel 210 is thus pressed under clamping action against the wall of the borehole 240. Since the dowel 210 is present only on one side of the screw 250, the borehole 240 may be made with a small diameter. Because of the asymmetrical design prevents the dowel 210 rotates when screwing the screw 250. Since the dowel 210 is open on one side, there is a simple way to mold thread grooves 222 and / or to apply a lubricant to the inner surface 210a of the dowel 210. In a compliant material, such as Pressboard or wood, the thread of the screw 250 engages in the resilient material, the dowel 210 is held on the other side by pressing.

In a further, not shown embodiment, the dowel 210 is in the form of an elongated member having a rectangular cross-section and has on its inner surface 210a thread grooves 222 and / or is provided on its inner surface 210a with a lubricant. Also, such dowel 210 may include a mounting hole 226, a hook 228, or a suspension hook 230.

The dowel 210 is preferably made of a plastic such as plastic. Nylon, or metal made.

As shown in FIG. 38A, a cavity dowel 310, representing a fourth type of dowel, includes a threaded rod 312 having a first end 312.1, a second end 312.2, and a male threaded portion 312a. A first female thread member 314 is proximate the first end 312.1, and a second female thread member 316 is threaded onto the male thread portion 312 near the second end 312.2.

Between the first internally threaded element 314 and the second internally threaded element 316, a locking element 318 is arranged on the threaded rod 312 by means of a through hole 318a.

The locking member 318 according to the embodiment is shown in FIG. 39A. The locking element 318 is designed as a beam and has two web portions 318A, 318B, which form the locking region. The locking element 318 is made of a semi-rigid or rigid elastic material, so that it can bend into the position shown in Fig. 38B and in Fig. 39B, but provides sufficient strength for anchoring, which will be explained later.

The locking element 318 has on its lower side, i. on the side facing the first end 312.1 of the threaded rod 312, a groove 318b. The longitudinal edges of the upper side, i. the side facing the second end 312.2 of the threaded rod 312 are provided with bevels 318c.

The second female thread member 316 is sized to pass through a bore 3102 of a wall 31-10 defining a cavity.

The first female thread member 314 has a larger outer diameter or dimension than the bore 3102 of the wall 3100. For centering purposes, the first female thread member 314 has a guide portion 314a having a smaller diameter than the bore 3102. To improve the assembly capability, the first female thread member 314 has a slot 314b, which is designed for insertion of a screwdriver. The first internal thread element 314 may also be designed as a hexagon nut, and it may additionally be provided a washer.

The operation of the cavity plug 310 will be explained below.

Starting from the initial position of the cavity plug 310 shown in FIG. 38A, the web areas 318A, 318B of the locking element 318 are bent in the direction of the first end 312.1 of the threaded rod 312. The groove 318b permits a very close contact of the locking element 318 on the threaded rod 312 with little space when passing through the bore 3102 of the wall 3100 (see FIGS. 38B and 39B). The passage through the bore 3102 is further promoted by the two bevels 318c on the locking element 318.

After passing through the bore 3102, the locking member 318 returns to its original position, as shown in Fig. 38C. The threaded rod 312 is pulled with its first end 312.1 in a direction away from the wall 3102 until the locking element 318 rests with its web portions 318A, 318B on the inner side 3100A of the wall 3100.

Then, the first female screw member 314 is threaded on the threaded portion 312a of the threaded rod 312 toward the wall 3100 or the threaded rod 312 itself is rotated until the first female screw member 314 is seated with its guide portion 314a in the bore 3102. Thereafter, a screwdriver, not shown, is inserted into the slot 314b of the first female threaded element 314 and this screwed. At this time, the land portions 318A, 318B of the lock member 318 are pressed against the inner side 3100A of the wall 3100 and prevent the second female screw member 314 from sliding back through the bore 3102 while the first female screw member 314 is pressed against the outer side 3100B of the wall 3100. This ensures a stable holding of the threaded rod 312 in the bore 3100, and a rotation of the threaded rod 312 is possible only with great effort.

4OA shows an embodiment of the locking element 318 with four web regions 318A, 318B, 318C, 318D offset by 90 °. 4OB shows an embodiment of the locking element 318 with three web regions 318A, 318B, 318C offset by 120 °.

4OC shows an embodiment of the locking element 318 with eight web portions 318A, 318B, 318C, 318D, 318E, 318F, 318G, 318H offset by 45 °.

A different number of land areas is possible. In addition, in other embodiments of the invention, the locking portion may be formed with a shape other than a beam.

The threaded rod 312 is straight at its first end 312.1 and provided with the threaded portion 312a, so that a third internal thread member 320 at the first end 312.1 of the threaded rod 312 can be screwed. In the illustrated embodiment, the length of the guide portion 314a of the female threaded member 314 corresponds to the thickness of the wall 3100. This prevents the land portions 318A, 318B from entering the bore 3102.

With the third internally threaded member 320 is an article, such as e.g. a board 330, which abuts against the first female thread member 314 attachable.

FIG. 42 shows another embodiment of a cavity anchor 310 representative of the fourth type of dowel. In this embodiment, the diameter of the bore 3102 of the wall 3100 is sized to be greater than the outer diameter or dimension of the second threaded element 316 (or equal to the outer diameter or outer diameter) the outer dimension of the second threaded member 316) plus twice the wall thickness of the locking member 318.

As can be seen in FIG. 42 and FIGS. 43A to 43D, the locking element 318 has, on its surface facing away from the second internal thread element 316, projections 324 which are formed as barbs.

The operation of the cavity plug 310 according to this embodiment will be described below with reference to FIGS. 42 to 44.

Starting from the starting position of the locking element 318 shown in FIG. 43A, the web portions 318A, 318B of the locking element 318 are bent in the direction of the first end 312.1 of the threaded rod 312 (FIG. 43B). After passing through the bore 3102, the locking member 318 returns to its original position, as shown in Fig. 43C. The threaded rod 312 is pulled with its first end 312.1 in a direction away from the wall 3102 until the locking element 318 rests with its web portions 318A, 318B on the inner side 3100A of the wall 3100. Upon further movement of the threaded rod 312 with its first end 312.1 away from the wall 3100, the locking member 318 bends with its land portions 318A, 318B in an opposite direction and retracts the bore 312 and jams due to the protrusions 324 on the inside 3100A wall 3100.

The second internal thread element 316 is now seated so firmly by means of the locking element 318 in the bore 3102, that the threaded rod 312 can be unscrewed and a commercially available screw can be screwed into the second female thread element 316 (see Fig. 44). The second internal thread member 316 may be a nut or a wedge-shaped internal thread member in this embodiment. In a modification, the second female thread member 316 is formed integrally with the locking member 318.

The first female thread member 314 is formed as a knurled nut, wing nut with a large washer or as a conventional metric hex nut. The first female threaded element 314 is made of hard rubber, metal or plastic.

The second female thread member 316 may be a conventional metric hex nut or may have a round outer circumference knurled for ease of handling. A hexagon nut in combination with a washer can also be used.

In the preferred embodiment, the locking member 318 is made of neoprene, nylon, Teflon, soft PVC, fabric reinforced hard rubber, leather or spring steel. The locking member 318 is formed of such a material or arranged to spread apart automatically after passing through the bore 3102.

The first end 312.1 of the threaded rod may be formed as a hook, as an eyelet or straight.

Claims

claims

1. dowel consisting of at least two in the longitudinal direction of the dowel (10) extending

Longitudinal struts (12) and a plurality of transverse struts (14), which connect the longitudinal struts (12) together.

2. Dowel according to claim 1, characterized in that the longitudinal struts (12) and

Cross struts (14) are integrally connected.

3. dowel according to claim 1 or 2, characterized in that the dowel (10) is made of a semi-rigid or rigid-elastic material.

4. Dowel according to one of claims 1 to 3, characterized in that the dowel (10) is made of plastic.

5. Dowel according to claim 4, characterized in that the dowel (10) consists of polyethylene or polyamide.

6. Dowel according to one of claims 1 to 5, characterized in that the longitudinal struts

(12) have a circular, oval, triangular, square or rectangular cross-sectional shape.

7. Dowel according to one of claims 1 to 6, characterized in that the cross struts

(14) have a circular, oval, triangular, square or rectangular cross-sectional shape.

8. dowel according to claim 6 or 7, characterized in that the longitudinal struts (12) and the transverse struts (14) have the same cross-sectional shape.

9. dowel according to claim 6 or 7, characterized in that the longitudinal struts (12) and the transverse struts (14) have different cross-sectional shapes.

10. Dowel according to one of claims 1 to 9, characterized in that the longitudinal struts (12) parallel to each other.

1 1. Dowel according to one of claims 1 to 10, characterized in that the transverse struts (14) parallel to each other.

12. Dowel according to one of claims 1 to 1 1, characterized in that the transverse struts (14) extend at a right angle to the longitudinal struts (12).

13. Dowel according to one of claims 1 to 12, characterized in that the transverse struts (14) are flat.

14. Dowel according to one of claims 1 to 12, characterized in that the transverse struts (14) are formed curved transversely to the longitudinal axis of the dowel (10).

15. Dowel according to one of claims 1 to 14, characterized in that end regions (12 a) of the longitudinal struts (12) are angled.

16. Dowel according to claim 15, characterized in that end regions (12 a) of the longitudinal struts (12) are angled only at one end of the longitudinal struts (12).

17. Dowel according to claim 15, characterized in that end portions (12 a) of the longitudinal struts (12) at both ends of the longitudinal struts (12) are angled.

18. Dowel according to one of claims 1 to 17, characterized in that the dowel (10) has two longitudinal struts (12).

19. Dowel according to claim 18, characterized in that the dowel (10) is bent transversely to its longitudinal axis.

20. Dowel according to one of claims 1 to 17, characterized in that the dowel (10) has four longitudinal struts (12), wherein the two inner longitudinal struts (12) by means of a film hinge (16) are interconnected.

21. Dowel according to one of claims 1 to 17, characterized in that the dowel (10) has five longitudinal struts (12).

22. Fastening structure with a dowel (10) according to any one of claims 1 to 21, characterized in that the fastening structure (1 100) has a bore formed as a blind hole (1 102).

23. Fastening structure with a dowel (10) according to one of claims 1 to 21, characterized in that the fastening structure (1 100) has a bore formed as a through hole (1 102).

24. Fastening structure according to claim 22 or 23, characterized in that one end of the dowel (10) of the mounting structure (1 100) protrudes.

25. Fastening structure according to claim 24, characterized in that the protruding end of the anchor (10) is used as an eyelet or hook.

26. Fastening element with a dowel (10) according to one of claims 1 to 21, characterized in that the fastening element has a hexagonal, square, circular or elliptical cross-sectional shape.

27. Fastening element according to claim 26, characterized in that the fastening element is designed in the form of a nut or in rod form.

28. Fastening element according to claim 26 or 27, characterized in that the fastening element is formed in cube shape and each side surface has a borehole (1 102).

29. Fastening element according to one of claims 26 to 28, characterized in that the fastening element made of plastic, wood, clay, concrete or marble.

30. A method for producing a dowel (10) according to any one of claims 1 to 21, characterized by the method steps:

Extruding a plastic part in lattice form,

- Cutting the plastic part to length.

31. The method according to claim 30, characterized by

- Cutting the plastic part to width.

32. Use of a commercially available as scratch protection interlayer grid or a grid pipe for filter purposes for a dowel (10) according to one of claims 1 to 21.

33. dowel, with a band-shaped base body (1 12) having on at least one surface a plurality of spaced apart, at an angle to the longitudinal direction of the base body (1 12) extending projections (120).

34. An anchor according to claim 33, characterized in that the projections (120) have a sawtooth-shaped cross-section.

35. An anchor according to claim 33, characterized in that the projections (120) have a semicircular, semi-oval, trapezoidal or triangular cross-section.

36. An anchor according to any one of claims 33 to 35, characterized in that the projections (120) on both surfaces of the base body (1 12) are arranged.

37. An anchor according to any one of claims 33 to 36, characterized in that the projections (120) extend at a right angle to the side edges of the base body (1 12).

38. An anchor according to any one of claims 33 to 36, characterized in that the projections (120) extend obliquely to the side edges of the base body (1 12).

39. An anchor according to any one of claims 33 to 38, characterized in that the projections (120) over their entire length have the same cross-section.

40. An anchor according to any one of claims 33 to 38, characterized in that the projections (120) have a varying over its length cross-section.

41. An anchor according to any one of claims 33 to 40, characterized in that the base body (1 12) has at least one fastening portion (1 14) which is provided for insertion into a borehole (2100) and the projections (120).

42. An anchor according to claim 41, characterized in that the distances between the projections (120) over the entire mounting portion (1 14) are equal.

43. An anchor according to claim 41, characterized in that the distances between the projections (120) are formed in different zones of the attachment portion of different sizes.

44. An anchor according to any one of claims 41 to 43, characterized in that the base body (1 12) has two fastening portions (1 14 A, 1 14 B).

45. An anchor according to claim 44, characterized in that the two fastening portions (114 A, 1 14 B) via a connecting portion (122) are interconnected.

46. An anchor according to claim 45, characterized in that the connecting portion (122) comprises a hinge connection.

47. An anchor according to claim 45 or 46, characterized in that the connecting portion (122) comprises a film hinge.

48. An anchor according to any one of claims 44 to 47, characterized in that the two fastening portions (1 14A, 1 14B) are formed of equal length.

49. An anchor according to any one of claims 44 to 47, characterized in that the two fastening portions (1 14 A, 114 B) are formed differently long.

50. An anchor according to any one of claims 41 to 49, characterized in that the base body (1 12) has a stop portion (1 16).

51. An anchor according to claim 50, characterized in that in the stop portion (1 16) a mounting hole (124) is formed.

52. An anchor according to any one of claims 41 to 43, characterized in that the base body (112) having a fastening portion (1 14) connected to the loop portion (130) and an eyelet connected thereto portion (132) having at least one through hole (134) ,

53. An anchor according to claim 52, characterized in that the eyelet portion (132) comprises a plurality of through holes (134) which are arranged in the longitudinal direction of the base body (112) spaced from each other.

54. An anchor according to claim 52 or 53, characterized by two fastening portions (1 14A, 1 14B), which are connected to each other via a connecting portion (122).

55. An anchor according to claim 54, characterized in that the connecting portion (122) comprises a hinge connection.

56. An anchor according to claim 54 or 55, characterized in that the connecting portion (122) comprises a film hinge.

57. An anchor according to any one of claims 54 to 56, characterized by a stop portion (1 16), which is connected to a fixing portion (1 14 B).

58. An anchor according to claim 44, characterized in that between the fastening portions (114 A, 1 14 B), a loop portion (130) is arranged, which is also provided with projections (120).

59. An anchor according to claim 58, characterized in that each fastening portion (1 14 A; 114 B) and the loop portion (130) via a connecting portion (122) are interconnected.

60. An anchor according to claim 59, characterized in that the respective connecting portion (122) comprises a hinge connection.

61. An anchor according to claim 59 or 60, characterized in that the respective connecting portion (122) comprises a film hinge.

62. An anchor according to any one of claims 58 to 61, characterized in that with each fixing portion (1 14A, 1 14B), a stopper portion (1 16) is connected.

63. An anchor according to any one of claims 41 to 50, characterized in that a hook (140) with a fixing portion (114 A) is connected.

64. An anchor according to claim 63, characterized in that the base body (142) between the hook (140) and the attachment portion (1 14A) notches (142).

65. An anchor according to claim 64, characterized in that the connecting portions (122) and the notches (142) are identical.

66. An anchor according to any one of claims 33 to 65, characterized in that the base body (1 12) along the side edges extending longitudinal struts (1 18), between which the projections (120) are arranged.

67. An anchor according to any one of claims 45 to 66, characterized in that the connecting portion 1 (22) when screwing a screw (2102) in the dowel (1 10) is formed cut through.

68. An anchor according to any one of claims 33 to 67, characterized in that the dowel (1 10) consists of plastic.

69. An anchor according to claim 68, characterized in that the anchor made of nylon, polyamide or polyethylene.

70. An anchor according to any one of claims 33 to 69, characterized in that the base body (1 12) in the region of the projections (120) is provided with a lubricant.

71. A cable tie for use with a dowel (110) according to any one of claims 33 to 70.

72. dowel, consisting of an elongated element in the form of a cylinder segment, which assumes the cross-section substantially the shape of a circle segment.

73. An anchor according to claim 72, characterized in that the wall thickness of the plug (210) from a first longitudinal side (212) to a second longitudinal side (214) is equal.

74. An anchor according to claim 72, characterized in that the wall thickness of the plug (210) from a first end face (216) to a second end face (218) increases.

75. An anchor according to claim 72, characterized in that in a first region near the first end face (216), the wall thickness over the entire peripheral portion is equal, while in a second region extending from the first region to the second end face (218). extends, the wall thickness from the first longitudinal side (212) increases to a circumferential center and decreases from this to the second longitudinal side (214).

76. An anchor according to any one of claims 72 to 75, characterized in that an inner surface (210 a) of the dowel (210) has molded thread grooves (222).

77. An anchor according to any one of claims 72 to 76, characterized in that the inner surface (210 a) of the dowel (210) is provided with a lubricant.

78. An anchor according to any one of claims 73 to 77, characterized in that the dowel (210) on its inner surface (210 a) has a recess (220) which extends from the first end face (216) to the second end face (218).

79. An anchor according to claim 78, characterized in that the recess (220) tapers from the first end face (216) to the second end face (218).

80. An anchor according to claim 78, characterized in that the recess (20) from the first end face (216) to the second end face (218) has the same length throughout.

81. An anchor according to any one of claims 72 to 80, characterized in that the dowel (210) in the region of the first end face (216) has a shaped element.

82. Dowel according to one of claims 72 to 81, characterized in that the dowel (210) in the region of the first end face (216) is bent transversely to the longitudinal axis of the dowel (210).

83. An anchor according to claim 81 or 82, characterized in that the mold element is a mounting hole (226).

84. Plug according to claim 81 or 82, characterized in that the shaped element is a hook (228) which extends along the longitudinal surface of the plug (210).

85. An anchor according to claim 10 or 1 1, characterized in that the shaped element is a suspension hook (230) which is bent transversely to the longitudinal surface of the anchor (210).

86. An anchor according to any one of claims 72 and 74 to 85, characterized in that the dowel (210) on its outer surface (210 b) has circumferential grooves (224).

87. An anchor consisting of an elongate member having thread grooves (222) formed on its inner surface (210a) and / or having a lubricant and / or having a molding member in a region near a first end face (216).

88. Anchor according to claim 87, characterized in that the dowel (210) in the region of the first end face (216) is bent transversely to the longitudinal axis of the dowel (210).

89. An anchor according to claim 87 or 88, characterized in that the shaped element is a mounting hole (226).

90. An anchor according to claim 87 or 88, characterized in that the shaped element is a hook (228) which extends along the longitudinal surface of the dowel (210).

91. Dowel according to claim 87 or 88, characterized in that the shaped element is a suspension hook (230) which is bent transversely to the longitudinal surface of the dowel (210).

92. An anchor according to any one of claims 87 to 91, characterized in that the wall thickness of the plug (210) from a first longitudinal side (212) to a second longitudinal side (214) is equal.

93. An anchor according to any one of claims 87 to 92, characterized in that the

Wall thickness of the dowel (210) from a first end face (216) to a second end face (218) increases.

94. An anchor according to any one of claims 72 to 93, characterized in that the dowel (210) consists of metal.

95. An anchor according to any one of claims 72 to 93, characterized in that the dowel (210) consists of plastic.

96. An anchor according to claim 95, characterized in that the dowel (10) consists of nylon.

97. Use of an elongate element with a rectangular cross-section as dowels (10).

98. Cavity dowel for fixing to a cavity having a mounting structure, with

a threaded rod (312) having a male threaded portion (312a), a first female threaded member (314) and a second female threaded member (316). which are screwed onto the externally threaded portion (312a) of the threaded rod (312), and a locking member (318) which sits by means of a through hole (318a) on the threaded rod (312) between the first female thread member (314) and the second female thread member (316) , at least one locking region (318) and is formed semi-rigid at least in the region of the through hole (318a).

99. Cavity dowel according to claim 98, characterized in that the locking element (318) as a beam with at least two locking areas (318 A, 318 B) is formed.

100. Cavity dowel according to claim 98 or 99, characterized in that the locking element (318) has a groove (318b) on its side facing the first end (312.1) of the threaded rod (312).

101. Cavity dowel according to one of claims 98 to 100, characterized in that longitudinal edges of the locking element (318) at the second end (312.2) of the threaded rod (312) facing side with bevels (318c) are provided.

102. Cavity dowel according to one of claims 98 to 101, characterized in that the first internal thread element (314) has a guide portion (314a).

103. Cavity dowel according to one of claims 98 to 102, characterized in that the first internal thread element (314) has a slot (314b) on its side facing the first end (312.1) of the threaded rod (312).

104. Cavity dowel according to one of claims 98 to 103, characterized by a third internal thread element (320) which is arranged at the first end (312.1) of the threaded rod (312) and serves for fastening an object.

105. cavity plug according to one of claims 98 to 104, characterized in that the locking element (318) on its side facing away from the second internal thread member (316) surface protrusions (324).

106. cavity plug according to claim 105, characterized in that the projections (324) are formed as barbs.

107. cavity plug according to claim 105 or 106, characterized in that the locking element (318) is formed integrally with the second internal thread member (316).

108. Cavity dowel according to one of claims 105 to 107, characterized in that the second internal thread element (316) is wedge-shaped.

109. Cavity dowel according to one of claims 98 to 108, characterized in that the first internal thread element (314) is designed as a knurled nut, wing nut or hexagon nut.

1 10. cavity plug according to one of claims 98 to 109, characterized in that the first internal thread member (314) is arranged in combination with a washer.

1 1 1. Cavity dowel according to one of claims 98 to 107, 109 and 1 10, characterized in that the second internal thread member (316) is a hex nut or a threaded member having a round outer periphery.

12. cavity dowel according to one of claims 98 to 1 1 1, characterized in that the second internal thread member (316) is arranged in combination with a washer.

13. cavity plug according to one of claims 98 to 1 12, characterized in that the locking element (318) consists of neoprene, nylon, Teflon, soft PVC, fabric reinforced hard rubber, leather or spring steel.

14. Cavity dowel according to one of claims 98 to 1 13, characterized in that the first end (312.1) of the threaded rod (312), as a hook, eyelet or straight is formed.