DE102016110478A1 - Fastening element with screw section and sliding shaft - Google Patents

Abstract

A fastening element (100) for mounting an attachment (102) to an anchoring base (104, 126), wherein the fastening element (100) comprises a drive (106) for driving, in particular for rotary driving, the fastening element (100) and a shaft (108) a threaded portion (110) adapted to be mounted in the anchoring base (104, 126) in a portion of the shaft (108) facing away from the drive (106) and having a first shaft diameter (d) with a thread (122) disposed thereon; and with a thread-free, in particular circular-cylindrical pin portion (112) which is provided for fastening in the attachment (102) in a region of the shaft (108) facing the drive (106) and having a second shaft diameter (D) which is greater than the first shaft diameter (d) is.

Description

The invention relates to a fastening element, a mounting kit, a mounting arrangement, a method for mounting an attachment to an anchoring base and a use.

While a large number of systems and products are available for assembly work in which an attachment is in direct contact with the anchoring ground, so-called gap mounting always causes problems. Partly in the new building, but especially in the renovation, often occurs the case that the anchoring ground to be provided with an additional insulation or the like. When mounting an attachment to an anchoring base, between which the insulating layer is arranged, the insulation layer should be bridged pressure resistant by means of an anchoring element, so as not to damage them and to allow the introduction of compressive forces in the anchoring ground. The attachment is mounted according to a setting and assembly instructions of the selected anchoring element.

For example, the company Würth offers the spacer mounting screw Amo III for mounting a window frame on a wall. This is an easy to handle in practice distance mounting screw, with which it is possible to attach windows precisely. The spacer mounting screw Amo III is a self-undercutting screw that does not require a dowel and initiates all acting loads by means of positive locking in the ground.

Würth also offers the dowel-based fastening system F-Anker for distance mounting. This provides a stress-free gap mounting anchor for the connection of two spatially separated elements after pre-adjusted distance. In the case of the F anchor, the head thread cuts into the window frame or the wooden strip and fixes it in a tension- and pressure-resistant manner at a distance from the anchoring ground. An attachment system based on an F-anchor always requires the use of a dowel. However, conventional dowels may be too short for mounting in a subsurface with hollow chambers.

DE 10 2010 030 281 discloses an assembly kit for mounting a fixture to an anchoring base at a distance, the fixture kit comprising a screw having a threaded portion and a dowel adapted to thread into a bore in a concrete wall when screwed therein to be screwed dowel-free through the attachment through a hole in an anchoring base designed as a solid body, and wherein the screw is arranged to be screwed through the attachment in the dowel in a bore in an anchoring base designed as a hollow body.

Although the described systems are very powerful for various applications, in some cases warping of the fixture mounted on the base may occur.

It is an object of the present invention to attach an attachment to an anchoring base while protecting it from undesirable distortion.

This object is achieved by the subject matters according to the independent patent claims. Preferred embodiments will be apparent from the dependent claims.

According to one exemplary embodiment of the present invention, a fastening element is provided for mounting an attachment to an anchoring base, wherein the fastening element has a drive for driving (in particular for rotational driving) of the fastening element. Furthermore, the fastening element has a shaft with a threaded portion which is provided for fastening in the anchoring base in a region of the shaft remote from the drive and with a first shaft diameter with a thread arranged thereon. In addition, the shaft of the fastener includes a non-threaded (preferably circular cylindrical) pin portion, which is provided for fastening in the attachment in a drive-facing portion of the shaft and with a second shaft diameter which is larger than the first shaft diameter.

According to another exemplary embodiment of the present invention, a mounting kit for mounting an attachment to an anchoring ground is provided, wherein the mounting kit comprises a fastening element with the features described above and a dowel, wherein the fastening element is arranged to pass through the attachment into an anchoring ground designed as a solid body to be screwed dowel-free, wherein the fastener is adapted to be screwed through the attachment through into the dowel in a bore in an anchoring base designed as a hollow body.

According to yet another embodiment of the present invention, there is provided a mounting arrangement comprising a fastener having the above-described features, an attachment and an anchoring base, wherein the fastening element is adapted to be introduced (in particular screwed) through the attachment into the anchoring base, so that at least a part of the threaded portion is fixed in the anchoring ground (in particular directly or optionally by means of an optionally provided Anchor is fixed in the anchoring base) and at least a part of the unthreaded circular cylindrical bolt portion is mounted in the attachment.

According to yet another embodiment of the present invention, there is provided a method of mounting an attachment to an anchoring base, wherein in the method a drive of a fastener is driven (in particular rotationally driven) with a shank, at least a portion of a threaded portion in a region remote from the drive Shaft with a first shaft diameter with a thread arranged thereon in the anchoring ground (or in an optional anchor in the anchoring base) is attached, and at least a portion of a thread-free (in particular circular cylindrical, alternatively, for example, frustoconical) bolt portion in a drive-facing portion of the shaft is fastened with a second shaft diameter in the attachment, wherein the second shaft diameter is greater than the first shaft diameter.

According to yet another embodiment of the present invention, a fastener having the above-described features for attaching an attachment (particularly wood) to a wooden anchoring ground is used.

In the context of this application, the term "attachment" can be understood in particular to mean a component which can be mounted on an anchoring base with or without a spacing. Thus, an attachment can be attached to the anchoring ground while maintaining a predetermined distance or directly thereafter.

In the context of this application, the term "anchoring base" can be understood in particular to mean a substrate suitable for anchoring the fastening element. Such an anchoring base may in particular be a wall, more particularly a vertical wall.

Materials for such an anchoring base are in particular wood or wood construction materials, or else concrete and masonry building materials, metal or plastic components. Furthermore, such an anchoring base may also be any composite material made of several different material components.

In the context of this application, the term "solid body" can be understood in particular as an anchoring ground which is free or substantially free of hollow chambers. Hollow chambers in this sense can in particular be material-free areas (or areas of very low density, for example foaming) in the interior of the anchoring ground.

In the context of this application, the term "hollow body" can be understood to mean, in particular, an anchoring base which has hollow chambers, ie, material-free regions (in particular in a penetration region of the fastening element into the anchoring base) (or has significant dimensions for the fastening effect). Such a hollow body may contain a regular arrangement of hollow chambers, for example, deliberately provided holes in a brick. Even a porous body can be considered as a hollow body. Concrete examples of hollow bodies are aerated concrete, perforated bricks or lightweight aggregate concrete.

Decisive for the term "hollow chamber" is therefore that in the field of such in the context of this description, a fastener has no or no significant contribution to the attachment of the fastener in the anchoring ground. In particular, hollow chambers can in this sense be material-free regions in the interior of the anchoring base which, at least in one dimension, have an extension of at least 1 mm, in particular of at least 5 mm. Furthermore, hollow chambers in this sense may be in particular material-free region in the interior of the anchoring base, which have a volume of at least 10 ^-8 m ³ , in particular of at least 10 ^-6 m ³ . But also pores of high density can significantly reduce the retention of the fastener in the anchoring reason, so that a highly porous body can also be referred to as a hollow body.

In the context of this application, the term "cut-to-length dowel" can be understood in particular to be a dowel cut to length from a dowel blank or an endless dowel of sufficient length to be used as a dowel in combination with a fastening element for a stand-off assembly task. It will be understood by those skilled in the art that even such an endless dowel will of course have a finite length, but significantly greater than the length of a single dowel (for example, such an endless dowel may have a spread of at least 10 cm). A cutaway dowel, which is also used as a dowel section of a Ablängdübels can be referred to, unlike a conventional dowel have two end openings of the same size. The two end openings may be identical or very similar in shape. Therefore, such a cutaway dowel may be free on one side of an edge reinforcement and be open on the other side, instead of being formed there as a kind of blind hole. Therefore, a cutaway dowel may also have a cylindrical structure with opposing openings. It is advantageous to provide such a dowel according to an embodiment of the invention, in particular endless dowel, with a guide tip, so that a better and easier insertion is possible. Especially an endless dowel with an insertion tip can be cut to a particular size or length or purpose and reliably inserted into a wellbore.

According to an exemplary embodiment of the invention, a fastening element for attaching an attachment to an anchoring base is provided with which simultaneously a sufficiently strong attachment of attachment and anchoring ground is ensured together and also allows a certain compensating movement between the attachment and anchoring ground. The former can be achieved by the combination of the threaded portion with the unthreaded bolt portion, since in this way the threaded portion is securely anchored in the anchoring ground and the bolt portion additionally causes a certain frictional connection to the attachment. At the same time, the absence of a thread in the bolt portion ensures that the attachment and the ground of anchoring can move relative to one another but in a limited manner and regardless of the certain frictional engagement relative to each other, but the attachment is further held. This allows the assembled composite to compensate for geometric variations over time due to physical effects (for example, working wood, geometric expansion due to thermal expansion in winter and summer, etc.). In particular, in prefabricated houses in timber stand construction has conventionally been shown that, for example, in anchoring reasons formed from wood on which window frames or other attachments are to be mounted, can forgive over time. Such a delay, which can come about by internal stresses (in particular by working wood) of the composite of attachment and anchoring reason, can be compensated by the thread-free bolt-shaped design of the arranged in the mounted state in the attachment bolt portion. Illustratively, the bolt portion forms a floating bearing in a through hole of the attachment, which is capable of reducing mechanical stresses between the attachment and the anchoring ground. By making the second shaft diameter (which can correspond to a circle diameter of a circular cylindrical bolt portion) of the bolt portion larger than the first shaft diameter (that is, the threadless core diameter), the threaded portion in the mounting direction can be passed through a through hole in the attachment and then preferably self-tapping or thread-forming an anchorage in the anchoring ground. Advantageously, an outer diameter of the threads may be smaller than or equal to the second shank diameter. This ensures easy installation and secure attachment.

Hereinafter, additional embodiments of the fastener, the mounting kit, the mounting arrangement, the method and the use will be described.

According to one embodiment, the threaded portion can connect directly to the unthreaded circular cylindrical bolt portion. This leads to a compact and easy to produce fastener.

According to one embodiment, the shaft between the threaded portion and the unthreaded circular cylindrical bolt portion may have a (in particular frusto-conical and / or thread-free) intermediate portion. Such an intermediate section with preferably frusto-conical or conical (alternatively concave or convex in the axial direction) or tapered toward an end tip of the fastener can accomplish a continuous transition of the larger second diameter to the smaller first diameter. The latter transition is advantageous to ensure a sufficient holding force of the bolt portion in the attachment and to avoid that the threaded portion in the attachment forms such a large cavity that subsequently a sufficiently strong connection between the bolt portion and attachment would no longer be guaranteed.

According to one embodiment, the threaded portion may connect directly or through a further unthreaded (and in particular circular cylindrical) pin portion spaced to the intermediate portion. The axial length of the threaded portion may be given by a desired mounting depth of the fastener in the anchoring reason. In particular, in the area of a distance mounting between attachment and anchoring ground, that is, if a predefined distance is to be maintained between opposing surfaces of anchoring ground and attachment, even a greater distance through such another Bolt portion of sufficient length can be ensured. The further bolt portion may be arranged wholly or partially in the assembled state between anchoring ground and attachment. In the assembled state, in particular, the entire section of the fastening element which has penetrated into the anchoring base can be formed by the threaded or screw section, whereas preferably the entire section of the fastening element which is located in the mounted state in the mounted state, by a thread-free shank section (FIG. especially wholly or partially) can be given by the bolt section. This makes it possible to achieve a balance between a sufficiently high fastening force and sufficient compensation capability when mechanical stresses occur.

According to one embodiment, the further thread-free circular-cylindrical bolt portion may have a third shaft diameter, which may in particular be equal to the first shaft diameter. In this geometry, the further bolt section does not interfere with the attachment described by the threaded portion nor the described limited compensating movement capability of the bolt portion in the attachment and advantageously leads to no abutment during insertion or passage through the attachment.

According to one embodiment, the drive (for example as a longitudinal slot, Phillips, AW drive, etc.) may be provided in an end face of an end portion of the shaft of the then head-free fastening element. In such a headless configuration of the fastener, the drive may be formed directly in an outside end face of the shank. This is advantageous in embodiments in which it is undesirable (for example, for optical reasons) that, after the mounting of the attachment to the anchoring ground, a head rests on the outside surface of the attachment from the outside. Clearly, the fastener can then be completely sunk in attachment and anchoring ground. Such a fastener can be produced with little effort.

According to another embodiment, the fastening element may have a head which is radially widened with respect to the second shaft diameter, wherein the drive (for example as a longitudinal slot, cross recess, AW drive, etc.) is provided in an end face of the head. Thus, the fastening element can particularly advantageously have a radially widened head, which in the mounted state can press from the outside onto the outside surface of the attachment. By means of the head can thus be strengthened the fastening effect in interaction with the threaded portion in the anchoring ground, without losing the ability of the bolt portion to allow for the occurrence of mechanical stresses a certain compensating movement of the attachment relative to the anchoring ground.

According to one embodiment, the fastening element may have a punctiform end tip. Such a punctiform end tip is able to penetrate into the anchoring base with little force and to form a receiving hole there, even if the anchoring ground is formed without pre-drilling prior to the setting process of the fastening element. Alternatively, the end of the fastener may be formed by one or more cutting edges.

According to one embodiment, the threaded portion may extend from the end tip. When the threaded portion, more specifically the first thread thereof, already begins in the area of the point-like end tip, this favors a self-furrow of a thread in the anchoring ground. This can be done with or even without pre-drilling in the anchoring ground when the fastener is screwed axially into the anchoring ground during rotational driving the drive. This embodiment leads from the beginning to a high degree of self-control.

According to one embodiment, the bolt portion may have a continuous profile-free, in particular a continuous smooth surface. In other words, the entire bolt portion in the axial and radial directions of profile structures (such as threaded portions, ribs, cutting, etc.) may be free and then effectively provide a desired floating bearing function.

According to one embodiment, the shaft can be hardened at least in sections, in particular at least on the threaded section. Such a configuration allows a dowel-free mounting of the fastener itself in a robust anchoring ground.

According to one embodiment, the threaded portion may have a self-tapping thread. This allows a low mounting effort a high fastening force.

According to an embodiment, a sum of the first shaft diameter and twice a radial height of the thread may be equal to or substantially equal to the second shaft diameter. Such an embodiment, for example, in 1 is shown, allows a dowel-free mounting of the fastener with a geometry that in both the threaded portion and in the bolt portion a substantially same outermost outer diameter provides. Such a fastener is manufacturable very easily manufactured by small-shaped material deformation.

According to another embodiment, a sum of the first shaft diameter and twice a radial height of the thread may be smaller than the second shaft diameter. According to this alternative embodiment, the bolt portion is significantly widened relative to the threaded portion in the radial direction, which favors, in particular, a use of the fastening element as required together with a dowel for the threaded portion. However, such a shaped fastener for the dowel-free mounting of an attachment to an anchoring ground is suitable. Depending on the structural requirements, in particular whether the anchoring reason is a hollow body or a solid body, a user can then easily decide whether a mounting with dowels (preferably if the anchoring ground is a hollow body) or without dowels (preferably if the anchoring ground is a solid body and therefore by itself provides a sufficiently high anchoring force) should be carried out.

According to one embodiment, the dowel may be a cut piece of a dowel plug or a dowel dowel, that is to say cut to length based on the depth of the bore. By configuring a dowel length by mere cutting off of a suitably long dowel piece from a dowel, by providing a single dowel type (namely dowel), the mounting arrangement can be advantageously used for a variety of assembly tasks. By providing an endless or cut-out dowel (see for example 9 ) a user can thus conveniently and on a respective application separated a piece of Ablängdübels and use as a dowel for mounting the fastener in the presence of a designed as a hollow body anchoring ground. This makes the provided fastening system even more flexible for any sinking depths of the fastener in the anchoring ground.

According to one embodiment, the attachment may have a bore with a bore diameter that is larger than the second shaft diameter. Although under certain circumstances a pre-bore mounting of the fixture to the anchoring base according to exemplary embodiments of the invention is possible, it is preferred to provide the fixture with a through bore prior to mounting the fixture to effect a well-defined amount of counterbalancing movement between the fixture and the base , The fastening element can then be easily inserted through this through-hole, so that an outer surface of the bolt portion and an inner surface of the attachment in the region of the through hole can be brought into operative connection with a certain predetermined game.

According to one embodiment, the bore diameter may be dimensioned in relation to the second shaft diameter such that the fastening element forms a movable bearing in the attachment. In contrast, the fastening element in the anchoring base preferably forms a fixed bearing. Under a camp can be understood a compound that can only transmit forces. In a forces-transmitting bearing can be distinguished between a fixed bearing and a floating bearing. A fixed bearing transmits forces acting in all directions. In a floating bearing in (at least) one direction in space no fixed connection exists, which allows a relative movement of the fastener and thus the anchoring ground relative to the attachment. In the context of such a movable bearing function, a contribution of the bolt portion for fastening the fastening element in the attachment and simultaneously for carrying out a limited compensating movement for the reduction of mechanical stresses is given at the same time. Depending on the exact geometries and dimensions of the components involved (anchoring base, fixture, fastener), the ratio between the outer diameter of the bolt portion and the inner diameter of the hole in the fixture can be adjusted to provide the floating bearing function.

According to one embodiment, a difference between the bore diameter in the attachment part and the second shaft diameter may be in a range between 0.3 mm and 2 mm, in particular in a range between 0.5 mm and 1 mm. Especially in these areas, the clearance between the bolt portion and the wall in the region of the through hole through the attachment is large enough to relieve a mechanical tension between the attachment and anchoring ground and small enough to provide a sufficiently large mounting contribution between attachment and bolt section.

According to one embodiment, an axial length of the bolt portion may be at least 50% of a thickness of the attachment in the setting direction. In particular, the axial length may be at least 1 cm, more particularly at least 2 cm. Preferably, in the field of window mounting, this axial length of the bolt portion at most, more preferably exactly as large as the thickness of the attachment (in the form of a window frame or the like). Preferably, this axial length of the bolt portion in the region of the distance mounting (where it can also come to an undesirable distortion by working wood) at least as large as the thickness of the attachment, so that the extension of the bolt portion can reliably cover in particular the entire thickness of the attachment. As a result, regardless of a preferably remaining clearance between the bolt portion and attachment a sufficiently high load capacity and guiding function of the bolt portion is ensured in the attachment.

According to an exemplary embodiment of the method, it can be determined whether the anchoring ground is a solid body or a hollow body. If the anchoring base is a solid body, a dowel-free screwing of the fastening element through the attachment part can take place in the anchoring base designed as a solid body. On the other hand, if the anchoring base is a hollow body, the fastening element can be screwed in through the attachment part into a dowel in a bore in the anchoring base designed as a hollow body. By this measure, a good attachment in the anchoring ground can be ensured for almost all anchoring substrates, with or without cavities. The combination of the described optional dowel concept and the movable bearing function of the bolt section has surprisingly been found to be a particularly efficient mounting system.

According to one embodiment, when determining, a solid wood anchoring ground, a solid foundation anchoring ground, a solid concrete anchoring ground, a full metal anchoring ground, or a full ceramic anchoring ground may be considered as a solid body.

According to one embodiment, when determining a hollow block or an anchoring base anchoring base as well as a wooden substrate with macroscopic holes can be considered as a hollow body.

According to one embodiment, a plurality of fasteners and / or dowels (or a dowel) may be provided having the above-described features and based on the attachment and the anchoring ground a respective one of the fasteners and / or a respective one of the dowels (or a piece of Ablängdübels) be selected for particular spaced mounting of the attachment to the anchoring reason.

According to one embodiment, an introduction of the fastener into the anchoring ground can be done without drilling or after forming a pilot hole in the anchoring ground. The described embodiments of the fastener are both compatible with a vorbohrungsfreien mounting of the fastener in the anchoring ground as well as with an assembly of the fastener in an anchoring ground, which has already been provided before the introduction of the fastener with a pilot hole. The vorbohrungsfreie design allows a particularly strong connection between the fastener and anchoring ground, whereas the design with pre-drilling favors a low-force setting process.

According to one embodiment, an introduction of the fastening element in the attachment after forming a pilot hole (in particular a through hole) in the attachment take place. An assembly with pre-drilled attachment is straightforward, since before penetrating into the anchoring ground due to the described proportions of threaded portion and bolt portion then a simple insertion of the fastener is made possible by the attachment. In other embodiments, however, an assembly of the attachment to the anchoring ground can also be done without pre-drilling of the attachment.

The attachment, which may be formed, for example, as a window or window frame, for example, wood, plastic (especially PVC), etc., have. The anchoring base may preferably have wood, although other anchoring reasons (such as concrete or hollow concrete) are possible. Particularly preferred is the application of a fastener according to an embodiment of the invention in wood frame construction in the field of prefabricated houses. If in such a technical context, for example, a window is rigidly bolted to a frame, it can come in particular under the influence of moisture and / or temperature to a distortion of the window frame and / or the anchoring reason. If the bolt portion of the fastener according to an exemplary embodiment allows a compensating movement of the attachment relative to the anchoring ground, but still provides a sufficiently strong fastening effect, such distortion can be avoided or greatly suppressed. For this purpose, the keeping empty of an annular gap between the bolt portion and attachment is advantageous. An excessive constraint of attachment and anchoring ground can be avoided.

Advantageously, the attachment between the described fastener with threaded portion and bolt portion in a Installation direction, which is different from a main load direction of the system of attachment and anchoring base, along which act during operation of the attachment to the anchoring ground, the largest operating forces. For example, if the attachment is a window frame, the main loading direction by operating forces is the wind direction directed from outside to inside. In order to allow a sufficiently stable attachment even under these circumstances, the attachment of fixture and anchoring ground in this main load direction can be done by a screw thread, whereas the attachment can be made in a direction orthogonal thereto for example by the fastener with bolt portion and threaded portion. As a result, a load-specific ratio between the fastening force and the compensation capacity can be provided.

According to one embodiment, the attachment may have a window frame and / or the anchoring ground a wall. Alternatively, the attachment can also represent a door frame, a block frame or other frame member.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the following figures.

1 shows a fastener according to an exemplary embodiment of the invention.

2 shows the fastener according to 1 in a mounted in an attachment and designed as a solid body anchoring ground state.

3 shows a side view of a fastener according to another exemplary embodiment of the invention.

4 to 6 show a plan view and two cross-sectional views of the fastener according to 3 ,

7 shows the fastener according to 3 to 6 in a mounted in a fixture and designed as a solid body anchoring ground dowel-free state.

8th shows the fastener according to 3 to 7 in one mounted in a fixture and designed as a hollow body anchoring ground together with dowels state.

9 shows a cross-sectional view of a Ablängdübels for use according to an exemplary embodiment of the invention.

The same or similar components in different figures are provided with the same reference numerals.

1 shows a fastener 100 according to an exemplary embodiment of the invention.

The fastening element formed as a hybrid structure of screw and bolt 100 according to 1 used for mounting an attachment 102 on an anchoring ground 104 (respectively. 126 ), as in 2 shown. The fastener 100 has an in 1 only schematically illustrated and designed for example as a cross recess drive 106 for rotational driving of the fastener 100 on to this through the attachment 102 through into the anchoring ground 104 screwed in. According to 1 is the drive 106 in an end face of an end portion of a shaft 108 formed so that the fastener 100 according to 1 is head free. The shaft 108 of the fastener 100 is with an end or tip-side threaded portion 110 provided for screwing in the anchoring ground 104 in a drive 106 remote area of the shaft 108 is arranged. The threaded section 110 is with a first shaft diameter d as the core diameter with a helical thread arranged thereon 122 formed and has an axial distance l between adjacent threads. The threads of the thread 122 stand on both sides by a height h on the core diameter or the first shaft diameter d of the threaded portion 110 above. The latter is in a detail 123 in 1 shown.

In addition, the shaft points 108 of the fastener 100 one with the threaded section 110 one-piece, drive-side and thread-free circular cylindrical bolt portion 112 on, the game-affair attaching in the attachment 102 provided and in a drive 106 facing area of the shaft 108 is arranged. The bolt section 112 has a continuous profile-free and continuous smooth lateral surface. The bolt section 112 is formed with a second shaft diameter D, which is larger than the first shaft diameter d and the sum of the first shaft diameter d and twice the height h corresponds.

The shaft 108 further comprises in the axial direction between the threaded portion 110 and the unthreaded circular cylindrical bolt portion 112 a frustoconical thread-free intermediate section 114 on that goes to the threaded section 110 tapered conically and an axial transition between the pin section 112 and the threaded portion 110 forms.

The shaft 108 ends in the axial direction in a point-shaped end tip 120 that the drive 106 opposite. In the embodiment shown, the threaded portion extends 110 starting from the end point 120 , which improves the setting control and a self-furrows of a thread in an anchoring reason 104 . 126 favored.

This in 1 shown fastening element 100 can be made of steel, for example. It is possible the fastener 100 at least in sections, in particular in the region of the threaded section 110 to harden. The thread 122 can be designed as a self-tapping or self-tapping thread. The fastener according to 1 can, as the fastener according to 7 and 8th , optionally with or without dowels.

The embodiment according to 1 is designed as a head-free bolt-thread hybrid structure, but may alternatively have a head, as in the 3 to 8th shown embodiment.

2 shows a mounting arrangement 180 with the fastener 100 according to 1 in one in the attachment 102 and the anchoring ground formed here as a solid body 104 assembled state.

The mounting arrangement 180 So it is out of the fastener 100 according to 1 , the attachment designed here as a window frame 102 and in the embodiment shown as a wooden stand component formed anchoring ground 104 made of solid wood. In 2 are the attachment 102 and the ground of anchoring 104 mounted separately from each other at an axial distance X, thus mounted together in spaced mounting. The fastener 100 is through a cylindrical bore 182 as pre-drilled through hole in the attachment 102 passed and into a hole or pre-drilling in the anchoring ground 104 screwed. Consequently, a part of the threaded portion 110 stable in the anchoring ground 104 attached, whereas the unthreaded circular cylindrical bolt portion 112 with game in the hole 182 of the attachment 102 is loosely attached. To accomplish this, is in the attachment 102 the hole 182 formed with a bore diameter L which is larger than the second shaft diameter D. More specifically, the bore diameter L is dimensioned relative to the second shaft diameter D such that the fastener 100 in the attachment 102 forms a floating bearing. A difference between the bore diameter L and the second shaft diameter D may be, for example, in a range between 0.5 mm and 1 mm.

2 shows how the fastener 100 according to 1 for distance mounting of the attachment 102 on the ground of anchoring 104 can be used. This is the first hole 182 with the outer diameter L as a through hole in the attachment 102 formed, for example, drilled. The here as solid body trained anchoring reason 104 can be processed without drilling. By means of an in 2 Not shown screwdrivers or cordless screwdriver can drive 106 (For example, a Phillips, longitudinal slot, AW drive, etc.) are rotated to after passing through a portion of the fastener 100 through the hole 182 in the attachment 102 the fastener 100 into the ground of anchoring 104 screw in without dowel. The entire section of the fastener 100 , in the assembled state in the anchoring ground 104 is arranged here is through the threaded portion 110 educated. On the other hand, the entire section of the fastener 100 in the assembled state in the attachment 102 is arranged through the bolt section 112 (optionally also by the intermediate section 114 ) educated. 2 shows that the entire fastener 100 in the arrangement of attachment 102 and anchoring reason 104 including space 199 can be recessed between them, so that in the mounted state no projection of the fastener 100 from the attachment 102 protrudes and is visible. The threaded section 110 ensures a sufficiently firm anchoring of the fastener 100 in the ground of anchoring 104 whereas between the pin section 112 and the hole 182 in the attachment 102 a narrow annular gap remains, which acts as a floating bearing and a compensating movement between the attachment 102 and anchoring reason 104 allowed on occurrence of mechanical stresses.

3 shows a side view of a fastener 100 according to another exemplary embodiment of the invention.

Compared to the embodiment according to 1 and 2 closes according to 3 the threaded section 110 not directly, but by an optional further unthreaded circular cylindrical bolt section 116 spaced at the intermediate section 114 at. The further thread-free circular cylindrical bolt section 116 has a third shaft diameter, which in the embodiment shown is equal to the first shaft diameter d.

Another difference of the embodiment according to 3 compared to the embodiment according to 1 and 2 lies in that the fastener 100 according to 3 a opposite to the second shaft diameter D radially expanded head 118 having. The drive 106 is in the illustrated embodiment in an end face of the head 118 intended.

According to 3 and unlike 1 and 2 is a sum of the first shaft diameter d and twice a radial height h of the thread 122 smaller than the second shaft diameter D. This favors a mounting with dowels 124 , as in 8th shown.

In the embodiment according to 3 is also the head 118 provided in the mounted state on an outer surface of the attachment 102 can push and thereby strengthen the fastening effect without the compensatory ability is lost when mechanical stresses occur.

4 . 5 and 6 show a plan view and two cross-sectional views (in different vertical heights) of the fastener 100 according to 3 ,

In 4 is the design of the drive 106 shown for the torque-transmitting intervention of a screwdriver or a cordless screwdriver. notch 162 at the threads of the thread 122 are in 3 . 5 and 6 shown.

7 shows the fastener 100 according to 3 to 6 in one in an attachment 102 and an anchoring ground formed as a solid body 104 Dowel-free mounted condition. 8th In contrast, the fastener shows 100 according to 3 to 7 in one in the attachment 102 and an anchoring base designed as a hollow body 126 including dowels 124 assembled state.

To decide whether in a particular application, the assembly according to 7 or those according to 8th be applied, it can first be determined whether the anchoring reason 104 respectively. 126 a solid body (as in the case of reference numerals 104 in 7 ) or a hollow body (as in the case of reference numerals 126 in 8th ). If the anchoring reason 104 . 126 a solid body (see reference numerals 104 in 7 ), preferably a dowel-free screwing of the fastener 100 through the attachment 102 through into a bore (or pre-drilling) in the designed as a solid body anchoring ground 104 respectively. If, however, the anchoring reason 104 . 126 a hollow body (see reference numerals 126 in 8th ), instead preferably a screwing in of the fastening element takes place 100 through the attachment 102 through in dowels 124 in a bore (or pre-drilling) in the anchoring base designed as a hollow body 126 , As a result, in both constellations a stable attachment in the respective anchoring reason 104 . 126 be ensured, especially in the floating mounting in the attachment 102 is advantageous.

The introduction of the fastener 100 into the ground of anchoring 104 . 126 can either pre-drilling or after forming a pilot hole in the anchoring ground 104 . 126 respectively. The introduction of the fastener 100 in the attachment 102 is preferably after forming a pilot hole (see bore 182 ) in the attachment 102 ,

If, as in 7 shown, the ground of anchoring 104 is formed as a solid body, the fastener 100 be mounted dowel-free. It will then be in the ground of anchoring 104 mounted as in 2 described. The solid body, according to this embodiment, the anchoring reason 104 forms, then alone for a sufficient fastening force between threaded portion 110 and anchoring reason 104 to care.

According to 8th becomes an assembly kit 150 from fastener 100 and dowels 124 for mounting the attachment 102 on the ground of anchoring 126 used. The in 8th anchoring ground shown 126 has macroscopic cavities 164 on that the carrying capacity of the fastener 100 in the ground of anchoring 126 weaknesses. In such an embodiment, therefore, to increase the carrying capacity of the dowel in addition 124 are used before the assembly of the fastener 100 into a pre-drilled hole in the anchoring ground 126 is inserted until a dowel collar 166 on an outer surface of the anchoring ground 126 comes to rest. That in the embodiment shown at a distance X to the anchoring reason 126 to be mounted attachment 102 , which also has a pilot hole in the form of a hole 182 is then provided by the fastener 100 penetrated and under rotary drive in the dowels 124 in the pre-drilling of the formed as a hollow body anchoring ground 126 driven. The interaction of dowels 124 , Threaded section 110 and anchoring reason 126 then ensures a sufficiently firm anchoring of the fastener 100 in the ground of anchoring 126 , At the same time allows a narrow annular gap between the bolt section 112 and the one through the hole 182 limited wall of the attachment 102 a compensation of compulsory forces between attachment 102 and anchoring reason 126 ,

Alternatively to the in 3 to 8th illustrated embodiment, it is also possible, the head 118 omit. Further alternatively, the threaded portion 110 also to the lower limit of the transitional section 114 extend. Should, however, the further bolt section 116 in the in 3 to 8th As shown, this area can also be used for a lettering, embossing, etc. As according to 3 to 8th the outer diameter of the bolt portion 112 larger than the outer diameter of the thread 122 is, this fastener is suitable 100 especially good for use with dowels (see 8th ).

Due to the in 3 to 8th shown geometric relationships, in particular the geometric relationships of threaded portion 108 and bolt section 112 to each other, it is ensured that the fastener 100 through holes in the window frame and into an anchoring ground 104 . 126 made of wood, concrete or solid stone can be imported.

9 shows a cross-sectional view of a Ablängdübels 128 for use according to an exemplary embodiment of the invention. For example, the in 8th shown dowels 124 by cutting to length from the abutment dowel 128 with one on the penetration depth of the fastener 100 into the ground of anchoring 126 based length.

The in 9 shown cutaway dowels 128 , which can also be referred to as an endless dowel, allows a user, a defined portion of the Ablängdübels 128 in such a length to separate as for anchoring with an existing anchoring depth in the anchoring reason 126 it is asked for. Such a separation can be done for example by means of a pair of pliers, scissors or a wallpaper cutter. Such a dowel plug 128 is thus a flexible usable and inexpensive finished semi-finished product that can be used with high operator comfort to separate dowel sections desired length.

In addition, it should be noted that "having" does not exclude other elements or steps, and "a" or "an" does not exclude a multitude. It should also be appreciated that features or steps described with reference to any of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference signs in the claims are not to be considered as limiting.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• DE 102010030281 [0005]

Claims (25)

Fastening element ( 100 ) for mounting an attachment ( 102 ) on an anchoring ground ( 104 . 126 ), wherein the fastener ( 100 ) comprises: a drive ( 106 ) for driving, in particular for Drehantreiben, the fastener ( 100 ); and a shaft ( 108 ) with a threaded portion ( 110 ), which is to be fastened in the anchoring ground ( 104 . 126 ) in a drive ( 106 ) facing away from the shaft ( 108 ) and with a first shaft diameter (d) with a thread arranged thereon ( 122 ) is provided; and a thread-free, in particular circular cylindrical bolt portion ( 112 ), which can be fastened in the attachment ( 102 ) in a drive ( 106 ) facing the shaft ( 108 ) and with a second shank diameter (D) which is larger than the first shank diameter (d). Fastening element ( 100 ) according to claim 1, wherein the shaft ( 108 ) between the threaded portion ( 110 ) and the unthreaded, in particular circular cylindrical pin portion ( 112 ), in particular a truncated cone-shaped and / or unthreaded, intermediate section ( 114 ) having. Fastening element ( 100 ) according to claim 2, wherein the threaded portion ( 110 ) directly or by a further unthreaded, in particular circular cylindrical bolt portion ( 116 ) spaced at the intermediate section ( 114 ). Fastening element ( 100 ) according to claim 3, wherein the further thread-free, in particular circular-cylindrical pin portion ( 116 ) has a third shaft diameter (d), which is in particular equal to the first shaft diameter (d). Fastening element ( 100 ) according to one of claims 1 to 4, wherein the drive ( 106 ) in an end face of an end portion of the shaft ( 108 ) of the head-free fastening element ( 100 ) is provided. Fastening element ( 100 ) according to one of claims 1 to 4, comprising a head radially widened relative to the second shaft diameter (D) ( 118 ), whereby the drive ( 106 ) in an end face of the head ( 118 ) is provided. Fastening element ( 100 ) according to one of claims 1 to 6, comprising a punctiform end tip ( 120 ). Fastening element ( 100 ) according to claim 7, wherein the threaded portion ( 110 ) starting from the end tip ( 120 ). Fastening element ( 100 ) according to one of claims 1 to 8, wherein the bolt portion ( 112 ) has a continuous profile-free, in particular a continuous smooth surface. Fastening element ( 100 ) according to one of claims 1 to 9, wherein a sum of the first shaft diameter (d) and twice a radial height (h) of the thread ( 122 ) is equal to or substantially equal to the second shank diameter (D). Fastening element ( 100 ) according to one of claims 1 to 9, wherein a sum of the first shaft diameter (d) and twice a radial height (h) of the thread ( 122 ) is smaller than the second shaft diameter (D). Mounting kit ( 150 ) for mounting an attachment ( 102 ) on an anchoring ground ( 104 . 126 ), whereby the mounting kit ( 150 ): a fastening element ( 100 ) according to any one of claims 1 to 11; and a dowel ( 124 ); the fastening element ( 100 ), by the attachment ( 102 ) into a solid body ( 104 ) anchoring ground ( 104 . 126 ) dowel-free to be screwed; the fastening element ( 100 ), by the attachment ( 102 ) into the dowel ( 124 ) in a bore in a hollow body ( 126 ) anchoring ground ( 104 . 126 ) to be screwed. Mounting arrangement ( 180 ), comprising: a fastener ( 100 ) according to any one of claims 1 to 11; an attachment ( 102 ); and an anchoring reason ( 104 . 126 ); the fastening element ( 100 ), by the attachment ( 102 ) into the ground ( 104 . 126 ), so that the threaded portion ( 110 ) at least partially in the ground of anchoring ( 104 . 126 ), in particular in an optional dowel ( 124 ) in the ground ( 126 ), and the unthreaded, in particular circular cylindrical bolt portion ( 112 ) at least partially in the attachment ( 102 ) is attached. Mounting arrangement ( 180 ) according to claim 13, wherein the attachment ( 102 ) a hole ( 182 ) having a bore diameter (L) greater than the second shaft diameter (D). Mounting arrangement ( 180 ) according to claim 14, wherein the bore diameter (L) in relation to the second shaft diameter (D) is dimensioned such that the fastening element ( 100 ) in the attachment ( 102 ) forms a loose bearing. Mounting arrangement ( 180 ) according to claim 14 or 15, wherein a difference between the bore diameter (L) and the second shaft diameter (D) in a range between 0.3 mm and 2 mm, in particular in a range between 0.5 mm and 1 mm. Mounting arrangement ( 180 ) according to one of claims 14 to 16, wherein an axial length of the bolt portion ( 112 ) at least 50% of a thickness of the attachment ( 102 ) and / or at least 1 cm, in particular at least as large as a thickness of the attachment ( 102 ) and / or at least 2 cm. Method for mounting an attachment ( 102 ) on an anchoring ground ( 104 . 126 ), the method comprising: driving, in particular rotary driving, a drive ( 106 ) of a fastener ( 100 ), which has a shaft ( 108 ) having; Attaching at least a part of a threaded portion ( 110 ) in a drive ( 106 ) facing away from the shaft ( 108 ) with a first shaft diameter (d) with a thread arranged thereon ( 122 ) in the ground ( 104 . 126 ); Attaching at least a part of a thread-free, in particular circular cylindrical bolt portion ( 112 ) in a drive ( 106 ) facing the shaft ( 108 ) with a second shank diameter (D) in the attachment ( 102 ), wherein the second shaft diameter (D) is larger than the first shaft diameter (d). Method according to claim 18, determining whether the anchoring reason ( 104 . 126 ) a solid body ( 104 ) or a hollow body ( 126 ); if the ground of anchoring ( 104 . 126 ) a solid body ( 104 ), dowel-free screwing the fastener ( 100 ) by the attachment ( 102 ) into the solid body ( 104 ) anchoring ground ( 104 . 126 ); if the ground of anchoring ( 104 . 126 ) a hollow body ( 126 ) is, screwing the fastener ( 100 ) by the attachment ( 102 ) into a dowel ( 124 ) in a bore in the hollow body ( 104 ) anchoring ground ( 104 . 126 ). A method according to claim 19, wherein the dowel ( 124 ) by cutting to length of a dowel ( 128 ) is provided with a depth based on the depth of the bore. Method according to one of claims 18 to 20, wherein the attachment ( 102 ) a window frame and / or the anchoring ground ( 104 . 126 ) has a wall. Method according to one of claims 18 to 21, wherein an introduction of the fastener ( 100 ) into the ground ( 104 . 126 ) pre-drilling or after forming a pilot hole in the anchoring ground ( 104 . 126 ) he follows. Method according to one of claims 18 to 22, wherein an introduction of the fastener ( 100 ) in the attachment ( 102 ) after forming a pilot hole in the attachment ( 102 ) he follows. The method of any one of claims 18 to 23, wherein: attaching the threaded portion ( 110 ) in the ground ( 104 . 126 ) done without play; and / or securing the bolt portion ( 112 ) in the attachment ( 102 ) with play. Use of a fastener ( 100 ) according to one of claims 1 to 11 for attaching an attachment ( 102 ) on an anchoring ground ( 104 . 126 ) wooden.

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