Mounting an attachment to an anchoring base with high load-bearing capacity

Abstract

Arrangement comprising: an anchoring base (124) with a mounting hole (122); an attachment part (102) having a thickness (G) and a through hole; and a mounting kit (100) intended to mount the attachment (102) to the anchoring base (124), the mounting kit (100) comprising: a fastener (104) having a fastener head (106) and a fastener shaft (114) and a fastener end (108) opposite the fastener head (106); a dowel (112) with a hollow dowel shaft (116) extending to a dowel end (118), wherein the through hole of the attachment part (102) is dimensioned such that the through hole cannot be penetrated by the dowel shaft (116); and a spacer element (132); wherein the attachment part (102) is mounted on the anchoring base (124) by means of the dowel (112) and by means of the fastening element (104); wherein the fastening element (104) and the dowel (112) are adapted to the attachment part (102) in such a way that when the dowel (112) is inserted into a mounting hole (122) in the anchoring base (124) and when the fastening element shaft (114) is passed through the through hole and into the dowel shaft (116), the fastening element head (106) presses the attachment part (102) against the anchoring base (124) and the fastening element end (108) extends axially at least as far as the dowel end (118), wherein the fastening element (104), the attachment part (102), the spacer element (132), which in the mounted state is arranged between the fastening element head (106) and the anchoring base (124), in particular between the attachment part (102) and the anchoring base (124), and an axial length (S2) of the dowel shaft (116) are adapted to one another in such a way that, when the dowel (112) is inserted into the mounting hole (122) in the anchoring base (124), a setting depth marking (150) of the dowel (112) is flush with the outer surface (180) of the anchoring base (124); wherein the dowel (112) has an end-side dowel collar (126) opposite the dowel end (118), which dowel collar (126) in the mounted state bears against a main surface of the attachment part (102) facing away from the fastening element head (106).

Description

[0001] The invention relates to an arrangement with a mounting kit for mounting an attachment to an anchoring base, and a method for mounting an attachment to an anchoring base.

[0002] There are various anchor systems available for suspending ceilings in masonry. Building regulations recommend using approved or reliable systems. For masonry constructed of bricks, for example, plastic anchors and injection systems are suitable.

[0003] In concrete, metal anchors can be installed through ceiling hangers using a push-through installation. Ceiling hangers with a thickness of 6 mm are common in concrete. However, the corresponding anchors cannot be reliably used in stone.

[0004] DE 26 27 650 A1 discloses a fastening kit comprising a plastic or metal expansion anchor and a fastening screw inserted therein, which radially expands the expansion anchor from an initial position with increasing axial penetration depth. The initial position and the penetration depth of the fastening screw are predetermined or fixed, and the contour of the screw and the internal cavity of the expansion anchor are coordinated such that, at the intended penetration depth of the fastening screw, the volume increase of the expansion anchor in the radial direction has a specific value. The expansion anchor has a preformed threaded area, at least in sections. The axial penetration depth of the fastening screw, with which a radial expansion of the expansion anchor is achieved, is expediently determined by a spacer.The spacer is formed by one or more, preferably two, axially oriented thin ribs projecting radially from the shaft of the fastening screw. These ribs are preferably integrally connected to the fastening screw. Furthermore, a dowel collar is provided, which rests directly against an outer surface of the anchoring base.

[0005] Further arrangements are known from DE 20 2006 017 859 U1; DE 10 2010 030 281 A1, fischer fastening systems, basic knowledge of fastening technology, WITH DOWEL AND ANCHORS and DE 87 14 335 U1.

[0006] It is an object of the present invention to reliably and stably fasten an attachment to an anchoring base.

[0007] This object is achieved by an arrangement and by a method for mounting an attachment to an anchoring base having the features according to the independent patent claims.

[0008] According to one embodiment of the present invention, an assembly comprises an anchoring base with a mounting hole; an attachment with a thickness and a through hole; and a mounting kit designed to mount an attachment to the anchoring base, wherein the mounting kit comprises a fastener with a fastener head and a fastener shaft and a fastener end opposite the fastener head, a dowel with a hollow dowel shaft extending to a dowel end, wherein the through hole of the attachment is dimensioned such that the through hole cannot be penetrated by the dowel shaft, and a spacer element, wherein the attachment is mounted to the anchoring base by means of the dowel and by means of the fastener;wherein the fastening element and the dowel are adapted to the attachment part in such a way that when the dowel is inserted into a mounting hole in the anchoring base and when the fastening element shaft is passed through the through hole and into the dowel shaft, the fastening element head presses the attachment part against the anchoring base and the fastening element end extends axially at least as far as the dowel end, the fastening element, the attachment part, the spacer element, which in the mounted state is arranged between the fastening element head and the anchoring base, in particular between the attachment part and the anchoring base, and an axial length of the dowel shaft are adapted to one another in such a way that when the dowel is inserted into the mounting hole in the anchoring base, a setting depth marking of the dowel is flush with the outer surface of the anchoring base;wherein the anchor has an end-side anchor collar opposite the anchor end, which anchor collar, in the assembled state, rests against a main surface of the fixture facing away from the fastener head;

[0009] According to a further embodiment of the present invention, a method is provided for mounting an attachment having a thickness and a through-hole to an anchoring base, wherein in the method a fastening element is provided with a fastening element head and a fastening element shaft as well as a fastening element end opposite the fastening element head (wherein in particular the fastening element shaft can have a first outer diameter), a dowel is provided with a hollow dowel shaft extending to a dowel end (wherein in particular the dowel shaft can have a second outer diameter which can be larger than the first outer diameter), wherein the through-hole of the attachment is dimensioned such that the through-hole cannot be penetrated by the dowel shaft (in particular with a through-hole with a hole diameter,which is substantially identical to the first outer diameter), the anchoring base is provided with a mounting hole, providing a spacer element, the dowel is inserted into the mounting hole in the anchoring base, and the fastening element shaft is inserted through the through hole and into the dowel shaft, so that the fastening element head presses the attachment against the anchoring base and the fastening element end extends axially at least as far as the dowel end, wherein the fastening element, the attachment, the spacer element, which in the mounted state is arranged between the fastening element head and the anchoring base, in particular between the attachment and the anchoring base, and an axial length of the dowel shaft are adapted to one another in such a way,that, when the anchor is inserted into the mounting hole in the anchoring base, a setting depth marking of the anchor is flush with the outer surface of the anchoring base; wherein the anchor has an end-side anchor collar opposite the end of the anchor, which anchor collar, when installed, rests against a main surface of the fixture facing away from the fastener head.

[0010] For the purposes of this application, the term "attachment" can be understood to mean, in particular, a plate-shaped component that can be mounted on an anchoring base (with or without a spacer). The thickness of the attachment can, for example, be in a range between 2 mm (millimeters) and 3 cm (centimeters), in particular in a range between 4 mm (millimeters) and 1 cm (centimeters).

[0011] For the purposes of this application, the term "anchoring base" can be understood, in particular, as a substrate suitable for anchoring the fastening element including the anchor. Such an anchoring base can be, in particular, a wall, and more particularly, a ceiling or floor. Materials for such an anchoring base include, in particular, stone, concrete, and masonry materials, as well as metal, wood materials, or plastic components. Furthermore, such an anchoring base can also be any composite material made up of several different material components.

[0012] According to an exemplary embodiment, an assembly kit is created for carrying out an assembly method in which a fastening element that can be used in conjunction with a dowel is clearly axially extended compared to a conventional fastening element. This has the effect that, despite the intermediate attachment part, after inserting the dowel into the mounting hole of the anchoring base and after the fastening element shaft passes through the through-hole of the attachment part and - with the dowel spreading - into the dowel shaft, the fastening element end still reliably penetrates to the dowel end or preferably even penetrates through the dowel end towards the deepest part of the mounting hole. The described extension or sufficiently long design of the fastening element ensures that, in the mounted state, the fastening element end protrudes to the dowel or even out of the dowel.In this way, the attachment can be easily assembled using just a few parts while ensuring high load-bearing strength.

[0013] With an assembly kit according to an exemplary embodiment of the invention, it can further be ensured that a correct setting depth of the anchor can be achieved in every installation situation and that complete expansion of the anchor can be achieved by the fastening element. Furthermore, with an assembly kit according to an exemplary embodiment, the positioning of a setting depth marking of the anchor in the region of the outer surface of an anchoring base can be guaranteed and, at the same time, correct expansion of the anchor by the fastening element can be achieved. In comparison to conventional solutions, this can be achieved by providing an axially extended fastening element, so that an attachment part can be arranged between a fastening element head and an outer side of the anchor without having to fear a reduction in expansion of the anchor by the fastening element.

[0014] Additional embodiments of the assembly kit, the arrangement and the method are described below.

[0015] According to one embodiment, the axial length of the fastener shank can be greater than or equal to the axial length of the anchor shank plus the thickness of the fixture. This allows the fastener length to be deliberately chosen to be different from the length of the associated anchor shank in order to achieve the described compensation function during standoff installation.

[0016] According to the invention, the dowel has an end-side dowel collar (for example in the form of a ring with a flat outer surface that radially expands the dowel) opposite the dowel end, which, in the installed state, rests against a main surface of the fixture facing away from the fastener head. Such a dowel collar can (in the absence of an optional spacer element) also rest on the anchoring base when the dowel is inserted into the mounting hole. This can provide a mechanical stop that ensures correct insertion of the dowel into the mounting hole. Alternatively, if, according to an exemplary embodiment, a spacer element is provided to compensate for a missing cover layer, the dowel collar can also rest on the spacer element on its main surface facing away from the anchoring base.

[0017] According to one embodiment, the fastener head can rest, either directly or spaced apart by a washer, against a main surface of the fixture facing away from the anchor. This results in a direct force transfer from the fastener head to the fixture if a washer is not provided, and an indirect force transfer if a washer or similar is provided. This allows the fixture to be reliably mounted to the anchoring base.

[0018] According to one embodiment, the fastener end can protrude axially beyond the anchor end by a length that is essentially equal to the thickness of the fixture. This ensures that, despite the presence of the fixture between the fastener head and the anchoring base, the fastener end always protrudes axially beyond the anchor end, thus achieving a high load-bearing capacity. In other words, this ensures reliable expansion of the anchor in every operating condition, even when the fixture is present.

[0019] According to one embodiment, the assembly kit comprises the spacer element, which, in the assembled state, is advantageously arranged between the attachment and the anchoring base. With such a spacer element, provided as needed and penetrated by the fastening element and dowel, between the attachment and the anchoring base, it can be achieved that the setting depth of the dowel in the anchoring base is such that, in the assembled state, a setting depth marking of the dowel is flush with the outer surface of the anchoring base or comes into contact with its spatial surrounding area. The provision of a spacer element is particularly advantageous when an anchoring base and / or an attachment is designed without a surface covering layer (such as a layer of plaster or an insulating layer).This clearly ensures that the anchor's installation depth (the target installation depth can be indicated by a installation depth marking on the anchor) can always be maintained. If the cover layer is sufficiently thick, the spacer element can be omitted. If there is no cover layer or only a thin one, a spacer element of a suitable thickness can be inserted between the fixture and the anchoring base. Such a spacer element can advantageously compensate for an incorrect distance if an optional cover layer (e.g. plaster or insulation) is missing or very thin on the anchoring base or the fixture. The thickness of the spacer element can then simulate the presence of such a cover layer or compensate for its absence, and can always ensure correct installation.

[0020] Thus, according to an exemplary embodiment of the invention, a dowel with an extended fastening element can be provided, which, for example, fits in an anchoring base or attachment with plaster or the like and, in the absence of a covering layer (such as plaster), can additionally use a spacer element as a spacer ring to compensate for the thickness.

[0021] According to one embodiment, the spacer element can have a through hole through which the fastener shaft and the dowel shaft pass when installed. Such a spacer element can be easily and intuitively inserted by a user to compensate for thickness differences and thus always achieve the correct insertion depth of the dowel.

[0022] According to one embodiment, the through hole of the spacer element can have a hole diameter that is substantially identical to the second outer diameter. In this embodiment, the dowel can also be passed through the through hole of the spacer element, and optionally, a dowel collar can be positioned against the surface of the spacer element facing the attachment.

[0023] According to one embodiment, the spacer element can be a spacer ring. With a ring-shaped design, the spacer element can be manufactured cost-effectively and can transmit a uniform return force in the circumferential direction.

[0024] According to one embodiment, the spacer element can be made of or comprised of plastic or metal. Spacer elements made of plastic or metal are cost-effective to manufacture and suitable for non-destructively absorbing the forces that occur during the assembly of an attachment.

[0025] According to one embodiment, the mounting kit can further comprise at least one additional spacer element, which, in the assembled state, is arranged between the attachment and the anchoring base. The additional spacer element can be used in addition to or instead of the previously described spacer element. Thus, precisely one of the different spacer elements of different thicknesses can be selected and interposed between the attachment and the anchoring base to achieve thickness compensation. Alternatively, it is also possible to arrange several spacer elements with a suitable total thickness between the attachment and the anchoring base to enable thickness compensation.Thus, a set of spacers of different thicknesses and / or different materials can be provided to compensate for cover layers of different dimensions or (in the case of a particularly thick spacer) to replace a missing cover layer. For example, a set of spacers can be provided in a thickness range from 5 mm to 30 mm.

[0026] According to the invention, the fastening element, the attachment part, and the spacer element, which in the assembled state is arranged between the fastening element head and the anchoring base, in particular between the attachment part and the anchoring base, and an axial length of the dowel shaft are adapted to one another in such a way that, when the dowel is inserted into the mounting hole in the anchoring base, a setting depth marking of the dowel is flush with the outer surface of the anchoring base. An axial length of the dowel shaft is dimensioned in such a way that, when the dowel is inserted into the mounting hole in the anchoring base, a setting depth marking of the dowel is positioned in the region of an outer surface of the anchoring base. This can be ensured in particular by a suitable selection of the thickness of the spacer element in an axial extension direction of the fastening element.

[0027] According to one embodiment, the anchor can be designed as a frame anchor. Such a frame anchor can, in particular, have a collar to engage a counterpart at a defined position, i.e., a stop point defined by the collar.

[0028] According to one embodiment, the attachment can be designed as a ceiling hanger. Thus, the mounting kit can be used for suspending ceilings in masonry.

[0029] According to one embodiment, the anchor can be designed to expand against the anchoring base, i.e., laterally, when the fastening element is guided through the anchor in such a way that the fastening element end extends axially at least to the anchor end, in particular protrudes beyond the anchor end. The flush closure or even axial protrusion of the fastening element relative to the anchor end can ensure correct expansion of the anchor against the anchoring base and thus a reliable load-bearing capacity.

[0030] According to one embodiment, the fastening element can be designed as a screw with a thread on the fastening element shaft, which is designed as a threaded shaft. When the fastening element is designed as a screw, the screw can be easily screwed into the anchor after inserting the anchor into the anchoring base (and optionally after passing the anchor through the spacer element) and after passing the screw through the attachment. The fastening element can be driven accordingly using a cordless screwdriver or a screwdriver. According to such a design, the end face of the fastening element head is advantageously provided with a drive.

[0031] According to another embodiment, the fastening element can be designed as a nail. While a screw is screwed radially into the anchor, a fastening element designed as a nail can be driven into the anchor by exerting purely axial force, thus without rotation. This can be done, for example, by hammering or shooting.

[0032] According to one embodiment, the anchoring base can consist of stone, in particular at least one of a group consisting of brick, concrete, aerated concrete, and a hollow body. Alternatively, the anchoring base can also comprise other materials, such as wood or plastic.

[0033] According to one embodiment, the fastening element, the dowel, the attachment, and the spacer element can be used to attach the attachment to an anchoring base designed as a ceiling. When mounting the attachment to a ceiling, the mounting kit according to the invention can thus be installed under tensile load.

[0034] According to another embodiment, the fastening element, the dowel, the attachment, and the spacer element can be used to attach the attachment to an anchoring base formed as a floor. When mounting the attachment to a floor, the mounting kit according to the invention can thus be used under compressive load.

[0035] The attachment can, for example, be a window frame or a window. Alternatively, the attachment can also be a door frame, a block frame, or another frame component. For example, the attachment can be made of wood, plastic, metal, ceramic, and / or stone. All concrete and masonry materials can be used as the anchoring base, from solid bricks and perforated bricks to aerated concrete, wood, metal, etc.

[0036] In the following, exemplary embodiments of the present invention are described in detail with reference to the following figures. Fig. 1 shows a mounting kit according to an exemplary embodiment of the invention. Fig. 2 shows a conventional mounting kit. Fig. 3 shows another conventional mounting kit.

[0037] The same or similar components in different figures are provided with the same reference numerals.

[0038] Before exemplary embodiments of the invention are described with reference to the figures, some general aspects of the invention will be explained.

[0039] According to European regulations, plastic anchors are only approved for certain applications in bricks with an outer diameter of 8 mm or more. Anchors with a smaller outer diameter can cause problems due to the drill hole (expansion of the drill hole when drilling into brick). However, conventionally used ceiling hangers for lightweight suspended ceilings generally have a 6 mm through hole. This means that plastic frame anchors with an 8 mm diameter cannot be reliably used in push-through installations.

[0040] In practice, therefore, the screws in frame anchors are sometimes screwed through the hanger into the anchor sleeve. This invalidates the product approval and results in the screw being too short for the correct (i.e., intended or planned) expansion of the anchor, as the screw does not penetrate deeply enough into the anchor. Furthermore, in many cases, the anchor is inserted too deep into the drill hole because it was intended for push-through installation. The setting depth mark is then below the stone surface. In other cases, if a ceiling is covered, for example, with plaster and / or a thick coat of paint, the anchor is not seated deep enough in the drill hole, which again leads to a reduction in load.

[0041] In contrast, exemplary embodiments of the invention ensure that the anchor is set to the correct depth and that the anchor is properly expanded by the screw in every installation situation. When installed correctly, the setting depth mark should be on the stone surface, and the screw should fully expand the anchor.

[0042] Conventionally, it can happen that the screw is too short for the installation situation in which it is used. The attachment shortens the penetration depth of the screw into the anchor because it is positioned between the sleeve and the screw head.

[0043] In contrast, exemplary embodiments of the invention implement an extended screw with the same length of the dowel sleeve. This allows an attachment to be placed between the dowel collar and the screw head, while still correctly and completely expanding the dowel.

[0044] As for the use of the anchor, a hole can be made in the ceiling. The anchor can be inserted into the hole. The screw for fastening the anchor is passed through the ceiling hanger and then screwed into the anchor. Now that the screw is adjusted to the required length, the anchor is expanded appropriately.

[0045] If there is a covering layer on the ceiling, for example a layer of plaster or insulation, its thickness is usually known. If it is not known, it can be measured. Since the thickness of the covering layer is known or can be determined, the correct anchor can be selected for this situation, i.e. expansion range plus sleeve length adapted to the covering layer. The sleeve length is preferably selected so that the setting depth marking of the anchor is on the surface of the stone or other anchoring structure. The surface of the anchor collar preferably lies on the covering layer or is arranged at a distance from it. If the anchor collar lies on the covering layer, the screw can be passed through the fixture and screwed into the anchor to secure the fixture.If the dowel collar protrudes above the cover layer, a suitable shim or other spacer element can be selected to bridge the gap between the surface of the cover layer and the underside of the dowel collar. The screw can then be passed back through the fixture and screwed into the dowel to secure the fixture.

[0046] This arrangement is suitable for fastening attachments to ceilings (i.e. for applications with tensile loads), but also for applications with compressive loads, for example for fastening wooden battens to floors in the sense of a stand-off installation.

[0047] The anchor can be advantageously designed as a frame anchor. The substrate or anchoring structure can be, for example, concrete, stone, aerated concrete, a hollow core ceiling, etc.

[0048] With optional plastic shims, which are additionally implemented in the system, the installation depth can be adjusted so that the installation depth marking always aligns with the beginning of the stone surface. Such shims can be made of plastic or metal, for example. A screw or nail screw can be used as the fastening element. The spacers or shims can all be of the same thickness or of different thicknesses.

[0049] With an exemplary embodiment of the invention, it is possible to install a suspended ceiling in accordance with building regulations.

[0050] Fig. 1 shows an arrangement of a mounting kit 100 and an anchoring base 124 according to an exemplary embodiment of the invention in an operating state in which the components of the mounting kit 100 are attached to the anchoring base 124 in the form of a stone wall.

[0051] The mounting kit 100 is used to mount a plate-shaped attachment 102, for example, to the anchoring base 124 in the sense of a ceiling suspension or the like. For this purpose, the mounting kit 100 has a fastening element 104 designed as a screw, for example made of stainless steel. The fastening element 104 has a fastening element head 106 designed as a screw head and a fastening element shaft 114 designed as a screw shaft. Opposite the fastening element head 106, a fastening element end 108 is provided, realized as a screw tip. The fastening element shaft 114 has a first outer diameter D1. Although this is Fig. 1, the fastener head 106 has a frontal drive into which a drive tool (such as a cordless screwdriver or a screwdriver) can engage in order to drive the fastener 104 in rotation and thereby drive it into the anchoring base 124 in a rotational manner. Thus, the fastener 104 according to Fig. 1 is designed as a screw with a thread on the fastening element shaft 114 designed as a threaded shaft.

[0052] In addition, the assembly kit 100 includes a dowel 112 designed to interact with the fastening element 104. The dowel 112, which is made of plastic, is a frame dowel and has a hollow dowel shaft 116 extending to an open dowel end 118, which has a second outer diameter D2 greater than the first outer diameter D1 and, in the assembled state of the assembly kit 100, is provided for receiving the fastening element shaft 114. The dowel 112 is designed to expand radially against the anchoring base 124 when the fastening element 104, designed as a screw, is screwed through the dowel 112.The length of the fastening element 104 in the axial direction is advantageously dimensioned in relation to the dowel length such that the fastening element end 108 extends axially at least as far as the dowel end 118, advantageously even protruding beyond the dowel end 118 and deeper into the dowel 112 in the direction of the deepest part of a mounting hole 122 in the anchoring base 124 (as shown in . Fig. 1). This ensures correct and complete expansion of the anchor 112 and guarantees a safe load-bearing capacity.

[0053] Furthermore, the plate-shaped attachment 102 forms part of the mounting kit 100 as a ceiling hanger and has a through-hole with a hole diameter L. The hole diameter L is essentially identical to the first outer diameter D1, so that the fastening element shaft 114 can be inserted or rotated with some play through the through-hole of the attachment 102. The attachment 102 is therefore provided with a through-hole dimensioned such that the through-hole of the attachment 102 can be penetrated by the fastening element shaft 114 (with a suitable outer diameter D1), but not by the dowel shaft 116 (with an outer diameter D2 that is too large for this purpose).This means that, in accordance with legal requirements for certain anchoring bases 124 (for example made of stone), corresponding anchors 112 with a relatively large outer diameter D2 can be used with attachments 102 with prefabricated, relatively small diameters L of through holes, without having to suffer any loss in load-bearing capacity due to incomplete anchor expansion or undesirable setting depth.

[0054] In the assembly kit 100, the fastening element 104, the dowel 112, and the attachment 102 are adapted to one another in terms of dimensioning and shape such that when the dowel 112 is inserted into the appropriately dimensioned mounting hole 122 in the anchoring base 124 and when the fastening element shaft 114 is passed through the through-hole in the attachment 102 and into the dowel shaft 116, the fastening element head 106 presses the attachment 102 against the anchoring base 124, and the fastening element end 108 protrudes axially beyond the dowel end 118 from the dowel 112. To achieve this, in particular, an axial length S1 of the fastening element shaft 114 is provided that is significantly greater than an axial length S2 of the dowel shaft 116.In conventional terms, according to the embodiment of the invention shown, the fastening element 104 is provided to be too long compared to the dowel 112, which, however, according to the embodiment shown, is advantageous precisely for adapting the components of the mounting kit 100, and in particular in view of the presence of the attachment part 102.

[0055] The dowel 112 has an end-side dowel collar 126 in the form of an annular radial widening opposite the dowel end 118. When the mounting kit 100 is mounted on the anchoring base 124, the dowel collar 126 bears against a lower main surface of the attachment 102 facing away from the fastener head 106. The fastener head 106 can be spaced apart by a washer 130 (or alternatively directly, not shown in the figure) against an upper main surface of the attachment 102 facing away from the dowel 112. Furthermore, when the mounting kit 100 is mounted, the fastener end 108 protrudes axially from the dowel 112 by a projection length H beyond the dowel end 118. The projection length H corresponds, for example, substantially equal to a thickness G of the attachment 102, for example, 5 mm to 6 mm.

[0056] In addition, the mounting kit 100 further comprises a spacer element 132, which is advantageously interposed between the attachment 102 and the anchoring base 124 to compensate for thickness differences, but only under certain conditions, during installation. The spacer element 132 can be omitted, for example, if a thick plaster layer is provided on an outer surface 180 of the anchoring base 124. If, as in the Fig. 1, such a thick plaster layer is missing on the outer surface 180 of the anchoring base 124, the thickness of such a plaster layer can be compensated for by the spacer element 132, and thus the extension and positioning of the dowel 112 and the fastening element 124 can be adapted to these circumstances. The spacer element 132 also has a through-hole through which the fastening element shaft 114 passes in the assembled state. The through-hole of the spacer element 132 has a hole diameter M that is essentially identical to the second outer diameter D2 of the dowel shaft 116, so that the dowel shaft 116 can be guided through the through-hole of the spacer element 132 with some clearance. The spacer element 132 can advantageously be designed as a spacer ring made of plastic or metal.

[0057] According to Fig. 1, the axial length S1 of the fastener shank 114 is dimensioned greater than the axial length S2 of the anchor shank 116 plus the thickness G of the fixture 102. This ensures that the anchor 112 is correctly expanded and thus a high load-bearing capacity can be guaranteed.

[0058] Although not shown in the figure, the mounting kit 100 can further comprise at least one further spacer element 132, thus comprising a set of spacer elements 132 of varying thicknesses. In this way, a suitably thick spacer element 132 can be selected and used for each application. Such a suitably selected spacer element 132 can be arranged between the attachment 102 and the anchoring base 124 in the assembled state and can have a suitable thickness for a larger or smaller layer thickness of a plaster layer or the like, or for a completely missing plaster layer.

[0059] The fastening element 104, the dowel 112, the attachment 102 and optionally a spacer element 132 are advantageously adapted to one another in such a way that, in the assembled state, a setting depth marking 150 of the dowel 112 is substantially flush with the outer surface 180 of the anchoring base 124. According to Fig. 1, the fastening element 104, the dowel 112, the spacer element 132 and the attachment 102 are used to attach the attachment 102 to the anchoring base 124, which is designed here as a ceiling, ie under tensile load.

[0060] Fig. 1 shows the mounting kit 100 already mounted on the anchoring base 124. According to Fig. 1, the attachment 102 is mounted at a distance from the outer surface 180 of the anchoring base 124 by the spacer element 132. The attachment 102 can be, for example, a ceiling hanger. The spacer element 132 can be mounted with a suitable thickness, for example, to compensate for a missing plaster layer on the anchoring base 124 in the illustrated embodiment. Such a spacer element 132, designed, for example, as a plastic ring, can be used, for example, if no non-load-bearing layer (e.g., plaster, tile, paint, etc.) is provided, so that the setting depth marking 150 of the anchor 112 again lies flush with the load-bearing anchoring base 124.

[0061] To install the mounting kit 110 in the Fig. 1, the mounting hole 122 is first formed in the anchoring base 124 at a sufficient depth. This can be done, for example, using a drill. If necessary (i.e., for example, in the absence of a covering layer), the spacer element 132 of suitable thickness can be placed on the outer surface 180 of the anchoring base 124. The dowel 112 can then be inserted through the through hole of the spacer element 132 into the mounting hole 122 until the dowel collar 126 rests against the main surface of the spacer element 132 facing away from the anchoring base 124. The fastening element 104 can be passed through the through hole of the attachment part 102, which is narrow in relation to the diameter of the through hole of the spacer element 132 and the diameter of the mounting hole 122, and can be screwed into the dowel 112 by means of a screwdriver or a cordless screwdriver (not shown).Since the fastening element 104 is provided with a sufficiently large axial length, regardless of the presence of the attachment part 102 and the spacer element 132, the fastening element 104 can be driven axially into the mounting hole 122 to such an extent that the fastening element end 108 penetrates further in the axial direction than as far as the dowel end 118. This can reliably ensure that the dowel 116 is completely spread open by the complete penetration by means of the fastening element 104 and develops its full load-bearing capacity in the anchoring base 124.

[0062] In a different operating state of the assembly set 100 not shown in the figure according to Fig. 1, in which a covering layer (for example, a layer of plaster or an insulating layer) of a certain thickness is provided on the anchoring base 124 on its outer surface 180, the spacer element 132 can be omitted without replacement or replaced by a correspondingly thinner spacer element 132. A set of spacer elements 132 of different thicknesses can thus always guarantee correct installation of the fastening element 104 in cooperation with the dowel 116 for different covering layer thicknesses.

[0063] The advantages of the mounting kit 100 according to the reference to Fig. The exemplary embodiment of the invention described in Figure 1 has advantages over conventional approaches, which will become clear from the following description:

[0064] Fig. 2 shows a conventional mounting kit 200 using through-hole mounting technology. The corresponding mounting kit 200 has a fastening element 206 that mounts an attachment 204 to an anchoring base 202. For this purpose, a mounting hole 212 is formed in the anchoring base 202. The attachment 204 is then placed on the anchoring base 202. The anchor 208 is inserted through the through hole of the attachment 204 and into the mounting hole 212 until a dowel collar comes into contact with the outer surface of the attachment 204. The fastening element 206 is then inserted into the anchor 208 until an end tip 210 of the fastening element 206 penetrates an axial dowel end. An area 220 indicates a setting depth marking of the anchor 208. The fastening element 206 of a pre-assembled fastening unit, designed as a screw, thus penetrates the sleeve of the dowel 208 by approximately 5 mm, for example.The setting depth marking 220 is flush with the anchoring base 202 (see also detail 250).

[0065] However, anchors 208 are only approved for certain anchoring bases 202 (e.g., bricks) starting from a certain outer diameter (in particular, only from 8 mm), since smaller outer diameters can result in undesirable hole expansion when drilling holes in stone. Since fixtures 204 typically have a relatively small through hole (especially with a diameter of 6 mm), there is an incompatibility between the required relatively large anchor diameter and the relatively small through hole in fixture 204. The flexibility of the through-hole ceiling suspension is therefore severely limited.

[0066] Fig. Figure 3 shows another conventional mounting kit 300 for use in pre-assembly. The pre-assembly according to Fig. 3 differs from the through-hole mounting according to Fig. 2 by inserting the dowel 208 directly into the mounting hole 212 in the anchoring base 202 until the dowel collar comes into contact with the outer surface of the anchoring base 202. Only then is the attachment 204, with a through hole corresponding to the shaft diameter of the fastening element 206, placed onto the dowel 208 in the anchoring base 202, and the fastening element 206 is screwed through the attachment 204 into the dowel 208 in the anchoring base 202.

[0067] During the described installation, a certain expansion of the anchor occurs, but this cannot guarantee sufficient load-bearing capacity. This is because the fastening element 206 is too short to extend through the entire axial extent of the anchor 208. The fastening element 206, designed as a screw, therefore does not completely penetrate the sleeve of the anchor 208 in the axial direction. The reason for this is that, according to Fig. 3 in contrast to Fig. 2 a lower edge of the screw head is spatially spaced from the dowel collar by the attachment part 204. Thus, the end tip of the fastening element 204 designed as a screw emerges during pre-assembly according to Fig. 3 does not penetrate the dowel end deep into the mounting hole 212. The anchoring according to Fig. 3 is therefore not certain. This is shown by a detail in the middle area of Fig. 3 can be recognized.

[0068] In addition, pre-assembly according to Fig. 3, the setting depth marking 220 is not positioned correctly, as the anchor 208 is inserted too deep into the mounting hole 202. The setting depth marking 220 is therefore, as shown in a detail on the right side of Fig. 3, is not flush with the anchoring base 202, but lies below the outer surface of the anchoring base 202 (see detail 250).

[0069] Furthermore, if the anchoring base 202 is covered with plaster, thick paint or the like, the anchor 208 is not seated deep enough in the anchoring base 202, which can lead to a load reduction.

[0070] Sufficient load-bearing capacity cannot be guaranteed, particularly in perforated brickwork and prestressed concrete planks.

[0071] The disadvantages of the conventional arrangements according to Fig. 2 and Fig. 3 may be subject to the order pursuant to Fig.1 can be remedied with little effort according to an exemplary embodiment of the invention.

[0072] Additionally, it should be noted that "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality. Furthermore, it should be noted that features or steps described with reference to one of the above embodiments can 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 limitations.

Claims

[1] Arrangement comprising: an anchoring base (124) with a mounting hole (122); an attachment part (102) having a thickness (G) and a through hole; and a mounting kit (100) intended to mount the attachment (102) to the anchoring base (124), the mounting kit (100) comprising: a fastener (104) having a fastener head (106) and a fastener shaft (114) and a fastener end (108) opposite the fastener head (106); a dowel (112) with a hollow dowel shaft (116) extending to a dowel end (118), wherein the through hole of the attachment part (102) is dimensioned such that the through hole cannot be penetrated by the dowel shaft (116); and a spacer element (132); wherein the attachment part (102) is mounted on the anchoring base (124) by means of the dowel (112) and by means of the fastening element (104); wherein the fastening element (104) and the dowel (112) are adapted to the attachment part (102) in such a way that when the dowel (112) is inserted into a mounting hole (122) in the anchoring base (124) and when the fastening element shaft (114) is passed through the through hole and into the dowel shaft (116), the fastening element head (106) presses the attachment part (102) against the anchoring base (124) and the fastening element end (108) extends axially at least as far as the dowel end (118), wherein the fastening element (104), the attachment part (102), the spacer element (132), which in the mounted state is arranged between the fastening element head (106) and the anchoring base (124), in particular between the attachment part (102) and the anchoring base (124), and an axial length (S2) of the dowel shaft (116) are adapted to one another in such a way that, when the dowel (112) is inserted into the mounting hole (122) in the anchoring base (124), a setting depth marking (150) of the dowel (112) is flush with the outer surface (180) of the anchoring base (124); wherein the dowel (112) has an end-side dowel collar (126) opposite the dowel end (118), which dowel collar (126) in the mounted state bears against a main surface of the attachment part (102) facing away from the fastening element head (106). [2] The assembly of claim 1, wherein an axial length (S1) of the fastener shank (114) is greater than an axial length (S2) of the dowel shank (116). [3] The assembly of claim 1 or 2, wherein an axial length (S1) of the fastener shank (114) is greater than or equal to an axial length (S2) of the dowel shank (116) plus the thickness (G) of the attachment part (102). [4] Arrangement according to one of claims 1 to 3, wherein the fastening element head (106), directly or spaced apart by a washer (130), bears against a main surface of the attachment part (102) facing away from the dowel (112). [5] An assembly according to any one of claims 1 to 4, wherein the fastener end (108) projects axially from the dowel (112) beyond the dowel end (118) by a projection length (H) substantially equal to the thickness (G) of the attachment (102). [6] Arrangement according to one of claims 1 to 5, wherein the spacer element (132) has a through hole which, in the assembled state, is penetrated by the fastening element shaft (114) and by the dowel shaft (116). [7] Arrangement according to one of claims 1 to 6, wherein the spacer element (132) is a spacer ring. [8] Arrangement according to one of claims 1 to 7, wherein the mounting kit (100) further comprises at least one further spacer element (132) which, in the mounted state, in addition to the spacer element (132) or instead of the spacer element (132), is arranged between the fastening element head (106) and the anchoring base (124), in particular between the attachment part (102) and the anchoring base (124). [9] Arrangement according to one of claims 1 to 8, wherein the dowel (112) is designed as a frame dowel. [10] Arrangement according to one of claims 1 to 9, wherein the attachment (102) is designed as a ceiling hanger. [11] Arrangement according to one of claims 1 to 10, wherein the dowel (112) is designed to spread laterally against the anchoring base (124) when the fastening element (104) is guided through the dowel (112) in such a way that the fastening element end (108) extends axially at least as far as the dowel end (118), in particular protrudes beyond the dowel end (118) from the dowel (112). [12] Arrangement according to one of claims 1 to 11, wherein the fastening element (104) is designed as a screw with a thread on the fastening element shaft (114) designed as a threaded shaft. [13] Arrangement according to one of claims 1 to 11, wherein the fastening element (104) is designed as a nail. [14] A method for mounting an attachment (102) having a thickness (G) and a through hole to an anchoring base (124), the method comprising: Providing a fastening element (104) with a Fastener head (106) and a fastener shaft (114) and a fastener end (108) opposite the fastener head (106); Providing a dowel (112) with a hollow dowel shaft (116) extending to a dowel end (118), wherein the through hole of the attachment part (102) is dimensioned such that the through hole cannot be penetrated by the dowel shaft (116); Providing the anchoring base (124) with a mounting hole (122); inserting the dowel (112) into the mounting hole (122) in the anchoring base (124); Providing a spacer element (132); and passing the fastening element shaft (114) through the through-hole and into the dowel shaft (116) so that the fastening element head (106) presses the attachment part (102) against the anchoring base (124) and the fastening element end (108) extends axially at least as far as the dowel end (118), wherein the fastening element (104), the attachment part (102), the spacer element (132), which in the mounted state is arranged between the fastening element head (106) and the anchoring base (124), in particular between the attachment part (102) and the anchoring base (124), and an axial length (S2) of the dowel shaft (116) are adapted to one another in such a way that, when the dowel (112) is inserted into the mounting hole (122) in the anchoring base (124), a setting depth marking (150) of the dowel (112) is flush with the outer surface (180) of the anchoring base (124); wherein the dowel (112) has an end-side dowel collar (126) opposite the dowel end (118), which dowel collar (126) in the mounted state bears against a main surface of the attachment part (102) facing away from the fastening element head (106). [15] Method according to claim 14, wherein the anchoring base (124) consists of stone, in particular of at least one of a group consisting of brick, concrete, aerated concrete and a hollow body. [16] Method according to claim 14 or 15, wherein the fastening element (104), the dowel (112), the attachment (102) and the spacer element (132) are used to attach the attachment (102) to an anchoring base (124) designed as a ceiling. [17] Method according to claim 14 or 15, wherein the fastening element (104), the dowel (112), the attachment (102) and the spacer element (132) are used to attach the attachment (102) to an anchoring base (124) designed as a floor.

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