DE202019005506U1 - Fastening system for fastening an object to a carrier - Google Patents

Abstract

Fastening system for fastening an object (36) to a carrier (52), in particular a carrier wall, comprising a dowel (24, 224, 324, 424) which can be inserted into the carrier and into which a fastening bolt (10, 210) can be screwed, characterized that a support element (44, 144, 444, 544) is provided for supporting the object (36), the outer contour of which executes a stroke when the support element (44, 144, 444, 544) rotates about a longitudinal axis, and that holding means are provided are for holding the support element (44, 144, 444, 544) in different rotational positions.

Description

The invention relates to a fastening system for fastening an object to a carrier, in particular a carrier wall, comprising a dowel which can be inserted into the carrier and into which a fastening bolt can be screwed.

With such fastening systems, for example, picture frames are fastened to the interior walls of buildings. The dowel is inserted into a hole in the inner wall and the fastening bolt, which can for example be a screw bolt, is screwed into the dowel. The fastening bolt remains with its bolt head at a certain distance from the inner wall so that, for example, a picture frame with a holding section can be hung on the bolt head.

In particular, if an object is to be fastened to a carrier by means of several such fastening systems, there is often the desire to be able to adjust the height after screwing in the fastening bolts. Private users in particular often find it difficult to align the drill holes and thus the dowels and fastening bolts exactly horizontally. A lateral adjustment is possible in some designs by moving the object with its holding means on the fastening bolt.

To adjust the height, in DE 10 2010 060 618 A1 proposed a screw with an oval screw head. Depending on the rotational position of the screw, the outer contour of the screw head, which carries an object to be suspended, has a different height. The disadvantage of the known screw, in addition to a small adjustment range, is the risk, especially with heavy objects, that the screw will turn back into a rotational position due to the weight of the suspended object in which the outer contour has a lower height.

Furthermore, from the DE 10 2010 060 618 A1 a screw is known in which the screw head has a cam section which is arranged eccentrically to the longitudinal axis of the screw and which in turn forms a bearing surface of different heights with its outer contour depending on the rotational angle of the screw. In addition to a small adjustment range, this embodiment also has a high level of instability in certain rotational angle positions, in particular in the case of heavy objects to be suspended. Another example of a height adjustment using an eccentric disk is shown in FIG DE 20 2014 100 230 U1 known. This also suffers from the disadvantages mentioned.

A further problem with the known screws occurs with the lateral adjustment explained at the beginning by moving the object on the screw heads. In particular with heavy objects, the screw can twist, which undesirably changes the height position.

Using only one fastening screw and one dowel also leads to instabilities. Even accidentally touching the suspended object regularly leads to an undesired change in the position of the object, which then has to be laboriously realigned.

Further fastening measures, such as further drill holes, the use of adhesive tape for fixing or thorns on the object to be hung or the holding means, are regularly undesirable, since they lead to further damage to the carrier, for example an inner wall, via the one or two drill holes required for hanging . This is undesirable, especially when the items to be hung up are frequently changed, as happens regularly in galleries, but also in the hotel industry, gastronomy or upscale retail.

In the case of also known beveled holding means on the left and right outer edge on the rear side of picture frames, an adjustment and limited fixation of the position are possible. However, it is no longer possible to adjust it laterally after it has been suspended. In addition, at least two attachment points on the carrier are mandatory here as well.

Other fastening systems, such as adjustable adhesive hangers, are inadequate for many applications in terms of load-bearing capacity compared to fastening bolts anchored in the carrier by means of dowels. An adjustment of the lateral position is also not regularly possible here.

Especially when several objects, for example picture frames, are to be hung in relative proximity next to one another or one below the other, a subsequent, variable setting of the positioning would be of great advantage, even if they are fastened using only one fastening point. Reliable adjustment of the position in the vertical and in the horizontal direction would also be helpful in the case of an attachment using two attachment points. Such adjustment options would also lead to significant time and cost savings, since less effort would be required with regard to the exact alignment of boreholes.

Based on the explained prior art, the invention is based on the object of providing a fastening system of the type mentioned at the outset which, with a high load-bearing capacity, enables an effective height adjustment of an object to be suspended in a simple and reliable manner, with a lateral adjustment of the position of the object without impairment the height adjustment should be possible.

The invention solves the problem by the subject matter of claim 1. Advantageous embodiments can be found in the dependent claims, the description and the figures.

For a fastening system of the type mentioned, the invention solves the problem in that a support element is provided for carrying the object, the outer contour of which executes a stroke when the support element rotates about a longitudinal axis, and that holding means are provided for holding the support element in different rotational positions .

The carrier can, for example, be a carrier wall of a building, such as an inner wall of a building. The object to be attached can be, for example, a picture frame, a frameless picture (photo, print or painting), a tenter frame, a mirror frame or a frameless mirror. The object can also be part of a shelf system to be suspended from a carrier.

The fastening system comprises a dowel which can be inserted into the carrier, in particular into a hole made in the carrier. The dowel can have anchoring means in a manner known per se, for example elastic retaining arms which secure the dowel against being pulled out of the bore. The dowel is usually held in a rotationally fixed manner in the bore of the carrier. A fastening bolt, for example a screw bolt, is inserted into the dowel, for example screwed in, as a result of which the dowel is expanded and, in the expanded state, is held non-positively and / or positively in the bore. This also holds the fastening bolt on the carrier. The dowel can for example consist partially or completely of a plastic. The fastening system according to the invention can also comprise the fastening bolt.

Furthermore, the system according to the invention comprises a support element which is designed to support the object with its outer contour. The support element can be an element formed separately from the dowel and the fastening bolt. But it can be part of the fastening bolt or the anchor. The support element can be fastened to the dowel and thus to the carrier, for example the carrier wall, for example via the fastening bolt. The object to be fastened to the carrier can have holding means with which the object is held on the carrier element. For example, the object can have a holding section, for example a step-like holding section, with which it rests in the suspended state on the outer contour of the support element and is thus held on the support element and thus on the carrier. The support element can consist of a plastic in a manner that is simple to manufacture. The support element can also consist of metal, for example. It then provides a particularly high load-bearing capacity.

The support element of the fastening system according to the invention has an outer contour which executes a stroke when the support element is rotated about a longitudinal axis, which in the assembled state corresponds in particular to the longitudinal axis of the fastening bolt or the dowel. The support surface formed by the outer contour of the support element for the holding means of the object thus changes in height as a function of the rotational position of the support element. By changing the angle of rotation of the support element, the height of the outer contour of the support element carrying the object can thus be changed. This in turn allows the height of the object to be adjusted as desired.

In order to prevent the support element from being (back) rotated undesirably due to the weight of the object itself or in the event of a subsequent lateral displacement of the object, and thus the height adjustment is changed again, according to the invention, holding means are provided that the support element in different rotational positions, So hold with different angles of rotation. The holding means counteract a rotation of the support element, so that an undesired (back) adjustment of the height is prevented.

The fastening system according to the invention thus allows, regardless of the number of fastening points provided, for example even with only one fastening point, on the carrier a multiple repeatable, subsequent adjustment of the object in the vertical and horizontal direction with a high load-bearing capacity and avoiding unnecessary damage to the carrier. The fastening system according to the invention can generally be used in a simple manner without changing the object to be suspended, in particular its holding means. The fastening system can therefore be used universally. At the same time, through suitable design of the Outer contour of the support element can be realized a large adjustment range. The fastening system allows the greatest possible flexibility in terms of size, material and design.

Due to the great flexibility, the fastening system according to the invention is particularly suitable for applications in which objects to be suspended, for example pictures, change frequently, as occurs in galleries, hotels, restaurants or retail outlets.

According to one embodiment, the support element can have a through opening for passing the fastening bolt through, wherein the support element can be held in a clamping manner between the fastening bolt and the dowel or the carrier. The fastening bolt is then inserted through the through opening of the support element for assembly and then inserted into the dowel. When fully inserted into the dowel, the support element is then held in a clamping manner between a bolt head section of the fastening bolt and a facing contact surface of the dowel or of the carrier. The longitudinal axis of the through opening defines the longitudinal axis of the support element, which causes the stroke of the outer contour when the support element is rotated.

According to a further embodiment, the holding means can comprise frictional connection means with which the support element can be held frictionally in different rotational positions. The frictional connection means can comprise a first clamping element with a through-opening for the fastening bolt and / or a second clamping element with a through-opening for the fastening bolt, which can be clamped between the support element and the carrier. The first clamping element and / or the second clamping element can be designed in the form of a disk. For example, one or both clamping elements can consist of a plastic. A particularly high clamping effect can hereby be achieved. It is also possible for one or both clamping elements to consist of a metal. This offers a particularly high level of stability. The support element can be flat, in particular without bevels or the like at the edges. The clamping element or elements simultaneously serve as a spacer between the support element and the carrier. As a result, the support element does not lie directly on the carrier. In this way, even with a planar configuration and without bevels or the like at the edges, the support element can easily engage behind, for example, a support section of the object to be fastened to the support. Such a support section object can be formed, for example, by folding the object.

According to a further embodiment, it can be provided that the first clamping element and / or the second clamping element is formed in one piece with the support element. For example, if the first and / or second clamping element are made of plastic, they can be manufactured using the plastic injection molding process. The support element can also consist of plastic. The one-piece design further simplifies manufacture, transport and assembly.

According to a further embodiment, the first clamping element and / or the second clamping element can have a structured surface. For example, the surface can be corrugated or otherwise structured. This further increases the clamping forces.

According to a further embodiment, the support element can have an elongated hole for the fastening bolt, so that the support element can be held in different positions along the elongated hole, in particular by means of the holding means or the fastening bolt. The fastening bolt is guided through the elongated hole and the support element can be moved laterally in the elongated hole with guidance of the fastening bolt and fastened in the desired position by the holding means or the fastening bolt. As a result, a further degree of freedom in adjusting the support element is achieved in a simple manner. If first and / or second clamping elements are provided, at least one of the clamping elements can have at least one guide projection which is guided in the elongated hole when the fastening bolt and thus the clamping element or clamping elements penetrated by the fastening bolt are displaced. The respective other clamping element can then, for example, have at least one guide receptacle in which the at least one guide projection is received. One or both clamping elements can also have several guide projections or guide receptacles.

According to a further embodiment, several outer edges of the support element, preferably all of the outer edges of the support element, can each run along a straight line and at an angle to one another. At least some of the outer edges can preferably run at an acute and / or an obtuse angle to one another. At least some of the outer edges can also have different lengths. The support element can, for example, have a trapezoidal shape with two base sides arranged in parallel and two at an angle to one another standing thighs. The base sides have different lengths. The legs can, for example, extend at an acute angle to one another, for example an angle between 30 ° and 60 °, preferably of approximately 45 °. Thus, by rotating the support element, the outer contour of the support element can be changed and the position of the object can thereby be changed flexibly.

According to a further embodiment, which can preferably be combined with the aforementioned embodiment, the holding means can furthermore comprise a holding rail which can be fastened to the object and into which the holding element can be inserted and held in different rotational positions. The holding rail can also be part of the holding means and hold the support element in the respective rotational position by means of a force fit and / or form fit. The retaining rail can be made of plastic or metal, for example. With a metal rail, an additional anti-theft device would be conceivable. For example, the support element could then be introduced laterally into the holding slips and held there in a form-fitting manner. If the lateral openings of the holding rail are then closed, for example by inserting a nut to be fixed by a screw, the support element cannot easily be released from the holding rail. The holding rail can be glued or screwed to the object, for example. Especially in combination with the aforementioned embodiment, the holding rail offers simple adjustability of the position of the object in the direction of the outer edge, in particular in the horizontal direction, by shifting the respective outer edge in the holding rail. The rail can, for example, be U-shaped. In a particularly simple manner, the holding rail can be attached to the object with its rail opening facing downwards, so that the rail can be placed on one of the outer edges of the support element and then held there by gravity. In order to improve the hold precisely for the adjustment, it can also be provided that the support element can be held in a clamping manner in the holding rail. For this purpose, the rail opening can, for example, have a slightly smaller width than the thickness of the outer edge of the support element. To increase the clamping force, the support element and / or the holding rail can have clamping elements, preferably clamping projections and / or clamping depressions. For example, the clamping projections and clamping depressions can be designed in the shape of a dome. A roughened surface of the support element and / or holding rail would also be conceivable.

As an alternative or in addition to a retaining rail, it is possible for the support element to have a plurality of retaining recesses, preferably retaining slots, on its circumference. The holding recesses are part of the holding means. Holding devices provided on the object, such as a holding wire or holding strap, can be inserted into these holding recesses in order to hold the support element in different rotational positions. This configuration can be provided particularly advantageously if there is no retaining rail. It is then also possible to slightly bend the support element in order to be able to use existing holding devices on the object, such as, for example, raised metal clamps or the like, if, for example, there is no hold for a holding rail.

According to a further embodiment, the holding means can comprise first holding means on the support element and second holding means on the dowel, the holding means being designed to hold the support element in different rotational positions or angles of rotation with respect to the dowel. As explained, the dowel is in particular held in the carrier in a rotationally fixed manner. By means of the first and second holding means, the rotational position of the support element can be set reliably in relation to the non-rotatable dowel and thus in relation to the object to be fastened.

According to a further embodiment, the holding means can be or comprise form-locking means with which the support element can be held in a form-fitting manner in different rotational positions or rotational angles. The interlocking means counteract a rotation of the support element relative to the anchor by engaging with one another. There is thus a particularly reliable holding of the respective rotational position compared to a sole frictional connection or frictional connection.

The form-fit means can have first form-fit means on the support element, in particular on the outside of the support element, which positively engage in corresponding second form-fit means on the dowel, in particular on the inside of the dowel. The first and second form-locking means can each form a periodic structure. The periodicity of the interlocking first and second form-locking means then specifies the possible rotational positions of the support element relative to the dowel. The number of form-fit elements on the support element and dowel need not correspond to one another.

According to a further embodiment, the interlocking means can comprise at least sections on the outside of a section of the support element constructed on the support element and second ribs that correspond to the first ribs and at least sectionally on the inside of the dowel. It is also possible that the First ribs having section of the support element in an insertion direction of the fastening bolt in the dowel (viewed in the assembled state) tapers, preferably conically tapered. The section of the dowel that forms the second ribs can also taper, preferably conically, in the direction in which the fastening bolt is inserted into the dowel.

The first and second ribs preferably extend essentially (except for a possibly provided (conical) tapering) in the longitudinal direction of the dowel or of the section of the support element having the first ribs. The cross-sectional shape of the ribs can be designed as desired. For example, the ribs can be rounded or pointed or have a different cross-sectional shape. The first ribs each engage with the second ribs in a form-fitting manner. The distance between the adjacent ribs specifies discrete possible rotational positions of the support element relative to the dowel. During the rotation process of the support element, the first and / or second ribs deform elastically. The, for example, corrugated, serrated or rosette-shaped rib structure on the support element thus finds a precisely fitting counter-structure in the dowel in order to lock the support element in the desired rotational position. The first and second ribs provide a particularly secure locking of the support element in the respective rotational position. The preferably conical tapering of the sections forming the first and second ribs also allows a particularly simple insertion of the fastening bolt into the dowel with a secure positive fit at the same time.

According to a further embodiment, the second ribs can be formed by a rib insert of the dowel made of a plastic, rubber or rubber. Such materials reliably meet the requirements for elasticity. By providing an insert inserted into the base body of the anchor, there is the greatest possible flexibility with regard to the adaptation of the respective materials to the desired function. For example, the base body of the dowel can consist of a harder or less elastic material than the insert forming the second ribs. It would of course also be possible for the dowel to be designed in one piece or of the same material.

According to a further embodiment, the rib insert can be materially connected to a base body of the dowel, preferably produced in a two-component injection molding process. In this way, there is a particularly secure hold while at the same time being particularly easy to manufacture.

According to a further embodiment, the fastening bolt can, as explained, be a screw bolt with an external thread formed at least in sections on the shaft section.

According to a further embodiment, the interlocking means can comprise interlocking elements formed on a rear side of the support element and interlocking elements corresponding to the interlocking elements of the carrier element formed on a head side of the dowel facing the rear of the carrier element in the assembled state. The support element can be designed, for example, in the form of a disk. A plurality of form-fit elements, for example projections or depressions, arranged, for example, distributed along a circular path, are then formed on a rear side facing the carrier in the assembled state. On an outer side of the dowel facing the support element in the assembled state, a plurality of corresponding positive-locking elements, for example depressions or projections, are then correspondingly formed, for example also distributed along a circular path. In the assembled state, the corresponding form-locking elements can interlock in different relative rotational positions of the support element and dowel, whereby they each prevent a (further) relative rotation between the support element and the dowel. The number of form-fit elements on the support element and dowel need not correspond to one another.

According to a further embodiment, the form-locking elements on the rear side of the support element and on the head side of the dowel can be dome-shaped form-locking elements that correspond to one another, in particular spherical-dome-shaped form-locking elements. In particular, dome-shaped, preferably spherical dome-shaped, depressions can be formed on one of the support element and dowel and dome-shaped, preferably spherical dome-shaped, projections on the other of the support element and dowel. Spherical form-fitting elements with a spherical shell-shaped inner or outer surface ensure simple adjustability of the rotational position of the support element while at the same time ensuring a secure hold.

The head side of the dowel can be formed by a flange section of the dowel. This flange section is enlarged in cross section compared to the section of the anchor to be inserted into the bore of the carrier. In the state of the dowel inserted into the bore, it can therefore rest against the carrier with an annular inside. At the same time, the support element rests against the outside of the flange section, which at the same time has the form-locking elements. The flange section also serves as a spacer between the support element and the carrier.

According to a further embodiment, the outer contour of the support element can deviate from a circular shape. The outer contour of the support element that deviates from the circular shape is therefore not rotationally symmetrical. In particular, it is not possible to map this outer contour onto itself using any desired angle of rotation. A deviation from a circular shape is particularly necessary in order to achieve the desired stroke when the support element is arranged with its through opening coaxially to the longitudinal axis of the dowel or the fastening bolt.

According to a further embodiment, the outer contour of the support element can have a non-round shape. A non-round shape deviates periodically from a circle. The outer contour of the support element can in particular be rotationally symmetrical. Rotational symmetry exists when the outer contour can be mapped onto itself by rotating it by at least an angle of rotation between 0 ° and 360 °. A non-circular or rotationally symmetrical outer contour allows a particularly uniform and predictable adjustment of the height position.

According to a further embodiment, the outer contour of the support element can have a polygonal shape. In principle, any desired polygons are conceivable, for example a hexagon, an octagon, etc. The polygon shape can also each have rounded corners.

According to a particularly practical embodiment, the outer contour of the support element can have an oval shape, in particular an elliptical shape, or a rectangular shape with rounded corners. A particularly simple height adjustment then results. Rounded corners also prevent unwanted tilting.

As already explained, the fastening system according to the invention can furthermore comprise the fastening bolt. The fastening bolt can have a shaft section and a bolt head section. The shaft section can be cylindrical at least in sections. The bolt head section has a cross-section that is enlarged in cross section compared to the shaft section. The fastening bolt can for example be a screw bolt with an external thread extending at least in sections over the shaft section. The fastening bolt can for example consist of a metal, in particular stainless steel.

According to a further embodiment, the largest diameter of the outer contour of the support element can be at least three times the size, preferably at least four times the size, of the (largest) diameter of the shaft section of the fastening bolt. According to a further embodiment, the largest diameter of the outer contour of the support element can be at least 25 mm, preferably at least 50 mm. The specified values relate to the outer contour of the supporting element that supports the object. This does not affect other sections of the support element. By means of a large-dimensioned outer contour of the support element, an effective height adjustment can be achieved particularly reliably while at the same time being held securely in the respective rotational position.

In order to maximize the adjustment range by rotating the support element, a longitudinal extension of the outer contour of the support element can, according to a further embodiment, be at least 1.5 times the size, preferably at least twice the size, of a transverse extension of the outer contour of the support element. For example, if the outer contour is elliptical, the longitudinal extent corresponds to twice the major semi-axis and the transverse extent corresponds to the double minor semi-axis of the ellipse.

As already explained, the support element can be an element formed separately from the fastening bolt and dowel. It is then possible in a manner that is simple in terms of manufacturing technology to use standard fastening bolts, in particular standard screw bolts, for fastening. The support element can, however, also be part of the dowel or in particular part of the fastening bolt. For example, it is possible that the support element is formed by the bolt head section of the fastening bolt. The outer contour of the support element explained above is then formed by the outer contour of the bolt head section. The object then rests, for example with its retaining means, on this outer contour of the bolt head section. In this embodiment, the fastening system only needs to comprise two parts. The bolt head section having the outer contour that is variable in height during rotation is that section on which the object to be fastened rests in the state fastened to the carrier. If, in this context, reference is made to the outer contour of the bolt head section, it is the outer contour of this bolt head section carrying the object. The bolt head section can be a bolt head plate which at the same time forms an end-side closure of the fastening bolt. The bolt head plate can have an engaging portion for engaging a turning tool. However, it is also possible for the bolt head section to be a section formed separately from such a bolt head plate, for example a section that is attached to the Bolt head plate adjoining section. The bolt head plate can have a cross section that differs from the bolt head section, for example a larger cross section than the bolt head section. The outer contour of the bolt head plate can be circular, for example. As far as retaining means, for example form-locking means, are formed on the fastening bolt, these are in particular formed separately from any external thread of the fastening bolt or are not formed by the external thread. To the extent that first ribs are designed as form-fit means on the fastening bolt, they can be embodied in particular on the shaft section of the fastening bolt. In principle, it would then even be conceivable that the structure of the first ribs formed on the shaft section extends completely over the shaft section, that is to say that the shaft section does not have an external thread for screwing into the dowel.

According to a further embodiment, the bolt head section can be arranged eccentrically to the longitudinal axis of the shaft section. The desired stroke can then also be achieved if the outer contour of the bolt head section has a circular shape.

According to a further embodiment, which can be provided in addition or as an alternative to the holding means explained above, the holding means can comprise a toothing formed at least in sections on the circumference of the support element. The toothing then digs into a corresponding holding section of the object, which can consist of wood, for example. As a result, securing against undesired turning back can already be sufficiently ensured in certain applications, for example with less heavy objects. In addition, such a toothing can also be provided in addition to form-locking means or the like in order to further secure the set rotational position. The toothing can be formed, for example, in the area of rounded corners of the outer contour.

The invention also relates to a system comprising a carrier, preferably a carrier wall, and an object fastened thereto by means of at least one fastening system according to the invention, preferably a picture frame, a frameless picture, a tenter frame, a mirror frame, a frameless mirror or part of a shelving system. It is possible that the object is fastened to the carrier with only one fastening system with only one fastening bolt, only one support element and only one dowel, and that the object is fastened with several fastening systems with several fastening bolts, several support elements and several dowels , for example with two fastening bolts, two support elements and two dowels.

• 1 einen Befestigungsbolzen eines erfindungsgemäßen Befestigungssystems nach einem ersten Ausführungsbeispiel in einer Seitenansicht,
• 2 eine Schnittansicht entlang der Linie A-A in 1,
• 3 eine Draufsicht auf den in 1 gezeigten Befestigungsbolzen,
• 4 das Detail B aus 3 in vergrößerter Darstellung,
• 5 eine Schnittansicht entlang der Linie A-A in 1 für einen Befestigungsbolzen nach einem weiteren Ausführungsbeispiel,
• 6 eine Draufsicht auf den Befestigungsbolzen aus 5,
• 7 eine Draufsicht auf einen Dübel eines erfindungsgemäßen Befestigungssystems,
• 8 eine Schnittansicht entlang der Linie C-C in 7,
• 9 eine Schnittansicht entlang der Linie D-D in 8,
• 10 ein Tragelement eines erfindungsgemäßen Befestigungssystems nach einem weiteren Ausführungsbeispiel in einer Draufsicht,
• 11 das Tragelement aus 10 in einer Seitenansicht,
• 12 einen Dübel eines Befestigungssystems nach einem weiteren Ausführungsbeispiel in einer Seitenansicht,
• 13 den Dübel aus 12 in einer Draufsicht,
• 14 ein erfindungsgemäßes Befestigungssystem umfassend das Tragelement aus den 10 und 11 und den Dübel aus den 12 und 13 in einem teilweise montierten Zustand in einer teilweise geschnittenen Ansicht,
• 15 ein Tragelement eines erfindungsgemäßen Befestigungssystems nach einem weiteren Ausführungsbeispiel in einer Draufsicht,
• 16 das Tragelement aus 15 in einer Seitenansicht,
• 17 einen Dübel eines Befestigungssystems nach einem weiteren Ausführungsbeispiel in einer Schnittansicht entsprechend 8,
• 18 den Dübel aus 17 in einer Schnittansicht entlang der Line E-E in 17,
• 19 einen mit einem erfindungsgemäßen Befestigungssystem an einem Träger zu befestigenden Gegenstand in einer Rückansicht,
• 20 ein vergrößertes Detail der Darstellung aus 19 mit einem Befestigungsbolzen,
• 21 Haltemittel eines mit einem erfindungsgemäßen Befestigungssystem an einem Träger zu befestigenden Gegenstands gemäß einem weiteren Ausführungsbeispiel,
• 22 ein erfindungsgemäßes Befestigungssystem nach einem weiteren Ausführungsbeispiel in einer perspektivischen Ansicht,
• 23 eine Schnittansicht des in 22 gezeigten Befestigungssystems,
• 24 ein Tragelement des in 22 gezeigten Befestigungssystems in einer Frontansicht,
• 25 ein erstes Klemmelement des in 22 gezeigten Befestigungssystems in einer perspektivischen Ansicht,
• 26 ein erstes Klemmelement nach einem weiteren Ausführungsbeispiel in einer ersten perspektivischen Ansicht,
• 27 das erste Klemmelement aus 26 in einer zweiten perspektivischen Ansicht,
• 28 ein zweites Klemmelement des in 22 gezeigten Befestigungssystems in einer perspektivischen Ansicht,
• 29 ein erfindungsgemäßes Tragelement nach einem weiteren Ausführungsbeispiel in einer ersten Draufsicht,
• 30 das Tragelement aus 29 in einer zweiten Draufsicht,
• 31 das Tragelement aus 29 in einer Seitenansicht,
• 32 das Tragelement aus 29 im an einem Träger befestigten Zustand in einer Schnittansicht.

Exemplary embodiments of the invention are explained in more detail below with reference to figures. They show schematically:

• 1 a fastening bolt of a fastening system according to the invention according to a first embodiment in a side view,
• 2 a sectional view along the line AA in 1 ,
• 3 a top view of the in 1 shown fastening bolts,
• 4th the detail B. 3 in an enlarged view,
• 5 a sectional view along the line AA in 1 for a fastening bolt according to a further embodiment,
• 6th a top view of the fastening bolt 5 ,
• 7th a plan view of a dowel of a fastening system according to the invention,
• 8th a sectional view along the line CC in 7th ,
• 9 a sectional view along the line DD in 8th ,
• 10 a support element of a fastening system according to the invention according to a further embodiment in a plan view,
• 11 the support element 10 in a side view,
• 12 a dowel of a fastening system according to a further embodiment in a side view,
• 13 the dowel 12 in a plan view,
• 14th an inventive fastening system comprising the support element from the 10 and 11 and the dowel from the 12 and 13 in a partially assembled state in a partially sectioned view,
• 15th a support element of a fastening system according to the invention according to a further embodiment in a plan view,
• 16 the support element 15th in a side view,
• 17th a dowel of a fastening system according to a further embodiment in a sectional view accordingly 8th ,
• 18th the dowel 17th in a sectional view along the line EE in 17th ,
• 19th an object to be fastened to a carrier with a fastening system according to the invention in a rear view,
• 20th an enlarged detail of the illustration 19th with a fastening bolt,
• 21st Holding means of an object to be fastened to a carrier with a fastening system according to the invention according to a further exemplary embodiment,
• 22nd a fastening system according to the invention according to a further embodiment in a perspective view,
• 23 a sectional view of the in 22nd shown fastening system,
• 24 a support element of the in 22nd shown fastening system in a front view,
• 25th a first clamping element of the in 22nd shown fastening system in a perspective view,
• 26th a first clamping element according to a further embodiment in a first perspective view,
• 27 the first clamping element 26th in a second perspective view,
• 28 a second clamping element of the in 22nd shown fastening system in a perspective view,
• 29 a support element according to the invention according to a further embodiment in a first plan view,
• 30th the support element 29 in a second plan view,
• 31 the support element 29 in a side view,
• 32 the support element 29 in the state attached to a carrier in a sectional view.

Unless stated otherwise, the same reference symbols in the figures denote the same items.

The in 1 mounting bolts shown 10 In the example shown, it is a screw bolt 10 . The fastening bolt 10 has a shaft section 12 with an essentially cylindrical basic shape and an external thread 14th . At his the introducer 15th opposite end, the fastening bolt has a bolt head section 16 on, in the present case formed by a bolt head plate. As in the 2 and 3 to see, has the bolt head section 16 a rectangular outer contour with rounded corners. The bolt head section 16 in this exemplary embodiment, with its outer contour forms a support element of the fastening system. In the top view of the 3 is an engaging portion 18th shown for engagement of a turning tool. The engaging portion 18th can be designed, for example, in the form of a hexalobular socket (Torx). However, it could also be designed in the form of a slot or cross slot or in some other way.

In the area of the transition of the shaft section 12 in the bolt head section 16 are on the outside of the shaft section 12 first ribs 20th educated. The first ribs 20th having portion of the shaft portion 12 tapers conically in one direction from the bolt head portion 16 away, in 1 so down. As in 2 the ribs are rounded at their crest and at their base. In 4th it can also be seen that in the area of the rounded corners of the bolt head section 16 each one toothing 22nd is trained.

The fastening bolt 10 consists in the example shown entirely of a metal material, for example stainless steel.

In the 5 and 6th is an alternative embodiment of a bolt head section 116 shown that instead of the bolt head section 16 at the in 1 mounting bolts shown can be provided. This bolt head section 116 differs from that in the 2 and 3 bolt head section shown 16 only in the fact that the 5 and 6th bolt head section shown 116 has an elliptical outer contour. The bolt head section 116 with its outer contour in turn forms a support element of the fastening system.

In the 7th to 9 is a dowel 24 a fastening system according to the invention shown. The dowel 24 forms a recording in a manner known per se 26th for the shaft section 12 of the fastening bolt 10 . The wall of the recording 26th has several in the longitudinal direction of the anchor 24 running slots 28 . In addition, the dowel 24 on its outside, also in a manner known per se, elastic retaining arms 30th on. The dowel 24 can be inserted into a bore of a carrier, not shown in detail, such as a carrier wall, the retaining arms 30th the dowel 24 Secure against being pulled out of the hole. In the course of screwing in the fastening bolt 10 in the recording 26th of the dowel 24 becomes the dowel 24 using the slots 28 spread open so that the fastening bolt 10 when screwed in together with the dowel 24 is securely anchored in the hole.

Entry into the recording 26th is through a flange portion 32 educated. To this flange section 32 a section closes with on the inside of the receptacle 26th of the dowel 24 trained second ribs 34 at. The second ribs 34 correspond to the first ribs in terms of shape and number 20th of the fastening bolt 10 . The second ribs too 34 forming section of the dowel 24 tapers in the example shown in the direction of insertion of the fastening bolt 10 , in 8th downward. In the course of screwing in the fastening bolt 10 in the dowel 24 get the first ribs 20th of the fastening bolt 10 in positive engagement with the second ribs 34 of the dowel 24 . The dowel 24 including the second ribs 32 consists in the example shown of elastic plastic. Due to the elasticity of the dowel 24 can the first ribs 20th depending on the rotational position of the fastening bolt 10 gradually in positive engagement with the second ribs 34 come.

By by the first and second ribs 20th , 34 Formed locking means can be the fastening bolt 10 in relation to the dowel held in a rotationally fixed manner in the bore of the carrier 24 be locked in different rotational positions. An object to be suspended from the carrier, for example a picture frame or the like, lies on the bolt head portion for holding on the carrier with a holding section 16 or. 116 on. By changing the rotational position of the fastening bolt 10 can due to the ovality of the bolt head section 16 or. 116 the vertical position of the object can be subsequently and reliably adjusted several times.

The one at the bolt head section 16 additional toothing provided on the rounded corners 22nd serves to additionally claw into holding sections of the object made of relatively soft material, such as wood, and thus the stability of the respectively selected rotational position of the bolt head section 16 to improve further.

Based on 10 to 14th a further embodiment of a fastening system according to the invention is to be explained. The fastening system comprises a support element which is disk-shaped in the example shown and is separate from the fastening bolt and the dowel 44 with an outer contour that is oval in the example shown. The support element 44 has a central through opening 46 through which an in 14th shown fastening bolt 210 , in this case a standard screw bolt 210 , can be performed. On the in 10 to be recognized back of the support element 44 are in the example shown four spherical cap-shaped projections 48 designed as form-fitting elements. In the 12 and 13 is a dowel 224 shown, which is designed to be with the support element 44 to work together. The dowel 224 largely corresponds to that in the 7th to 9 shown dowel 24 . Also the dowel 224 forms a recording 226 for the shank section of the fastening bolt 210 . The wall of the recording 226 in turn has several in the longitudinal direction of the anchor 224 running slots 228 . In addition, the dowel also has 224 elastic holding arms on the outside 230 on. Unlike the one in the 7th to 9 shown dowel 24 points the dowel 224 at his entry into the recording 226 forming end one in cross section opposite the rest of the anchor 224 significantly enlarged flange section 232 on. On the back of the support element in the assembled state 44 facing head side are on the flange section 232 several spherical cap-shaped recordings distributed along a circular path 50 designed as form-fitting elements. The recordings 50 correspond in their geometry to the projections 48 of the support element 44 . In particular, the projections 48 of the support element 44 in by the number and arrangement of the recordings 50 predetermined steps in different relative rotational positions between the support element 44 and dowels 224 form-fitting in the recordings 50 intervention.

14th Figure 3 is a partially sectioned view showing, for the sake of illustration, the support member 44 and the carrier 52 are shown in section. As in 14th to be recognized is for mounting on a carrier 52 , in this case a support wall 52 , first the dowel 224 into an unspecified hole in the carrier 52 used. Then the support element 44 in the desired rotational position on the flange section 232 of the dowel 224 attached, the projections 48 form-fitting in the recordings 50 intervention. After that, the fastening bolt 210 through the through opening 46 of the support element 44 through into the receptacle 226 of the dowel 224 screwed in. In the fully assembled state, the support element 44 so between the bolt head section 216 and the flange portion 232 held clamped. The flange section 232 at the same time forms a spacer for the support element 44 from the carrier 52 .

In the 15th and 16 is a support element 144 shown according to a further embodiment. This also disc-shaped support element 144 has a rectangular outer contour with bevelled corners. Again, the support element has 144 a central passage opening 146 . Starting from a cylindrical extension 148 extends in the embodiment of 15th and 16 a section of the in 15th shown rear side of the support element 144 its outside by a plurality of first ribs 120 is formed as form-locking elements.

In the 17th and 18th is a dowel 324 shown according to a further embodiment, which is designed to be with the support element 144 from the 15th and 16 to work together. Again this forms dowel 324 a recording 326 whose walls have a plurality of slots 328 are provided. In addition, this also has dowels 324 again elastic holding arms 330 on. To one of the entry into the reception 326 forming flange section 332 closes on the inside of the dowel 324 a plurality of to the first ribs 120 of the support element 144 corresponding second ribs 334 at. The support element 144 can accordingly with his the first ribs 120 having section in by the distance between the first and second ribs 120 , 334 predetermined discrete rotational positions in the dowel 324 are used, with the first ribs 120 in each case positively in the second ribs 334 intervention.

In the same way as this in 14th for the support element 44 and the dowel 224 is shown, in this way the support element 144 over the dowel 324 and for example the fastening bolt 210 on a carrier 52 attached. Again is the support element 144 between the flange portion 332 of the dowel 324 on the one hand and the bolt head section 216 of the fastening bolt 210 on the other hand held clamped in the respectively desired rotational position.

In 19th is an on a carrier, like the one in 14th shown support wall 52 , object to be attached 36 , in the example shown a picture frame 36 , shown in a rear view. On its back are on the picture frame 36 two frame angles 38 attached, for example by screwing. In 19th are the frame angles 38 in the top two corners of the picture frame 36 arranged. However, they can also be arranged in other positions, as in 19th at the reference number 40 indicated by dashed lines.

In 20th is the in 19th right frame angles 38 shown in an enlarged view. It can be seen that the frame angle 38 (the in 19th left frame angle 38 is so far formed identically) on its upper side a fold 42 has the holding means for holding on the fastening bolt 10 forms. In particular, the picture frame 36 with the underside of the fold 42 on the bolt head section 16 or. 116 of the fastening bolt 10 hung as in 20th very schematic and exemplary for the fastening bolt 10 with the bolt head section 116 illustrated. The fastening bolt 10 and thus its bolt head section 116 are in 20th shown in two rotational positions rotated by 90 ° for illustration purposes only. The schematic representation is intended to illustrate how by rotating the fastening bolt 10 a height adjustment of the picture frame 36 he follows. It goes without saying that actually a fastening bolt 10 per frame angle 38 is sufficient. In the same way the object 36 with the fold 42 on the outer contour of the support element 44 or the support element 144 to be hung. By adjusting the rotational position of the support element 44 or the support element 144 the height of the object can in turn be adapted as desired.

While in the embodiment of 19th and 20th shows two fastening points with two fastening bolts and two dowels are required 21st an alternative embodiment of a holding frame 138 , which also has a fold 142 which form the holding means. Again is the holding frame 138 on the back of an object 36 like a picture frame 36 , arranged and with the underside of the fold 142 on the bolt head section 16 or. 116 of the fastening bolt 10 or on the support element 44 or the support element 144 hung up. In the embodiment of 21st is a holding frame 138 sufficient so that only one fastening point with a fastening bolt and dowel is required.

The one in the 22nd and 23 The fastening system shown is a retaining rail with a U-shaped cross section 412 provided that on the back of the object to be attached to the carrier with its rail opening facing down, as in 22nd shown, is attached, for example glued. In the example shown there is the support rail 412 made of plastic and is elastic. In the holding rail 412 A support element is held in a clamped manner 444 , in the example shown as a metal plate with an elongated hole 426 is trained. Through this elongated hole 426 the fastening bolt is guided. In addition, especially in 24 to see that the outer edges of the support element 444 run along a straight line and at an angle to one another. At least some angles are acute and obtuse angles. As a result, at least some of the outer edges also have a different length. This allows the support element 444 optionally with one of its outer edges in the retaining rail 412 are used, whereby in interaction with the elongated hole 426 a variety of positioning options for the fastening bolt and thus the object can be realized. In 22nd is also an optional mark 446 shown the the Position of the fastening bolt in the elongated hole 426 indicates. For reasons of illustration, this marking is in 24 Not shown. In addition, the support element 444 a plurality of dome-shaped clamping projections arranged in the vicinity of its outer edges 448 on which the clamping force between the holding rail 412 and support element 444 increase.

The fastening system also includes an in 25th shown substantially disk-shaped first clamping element 450 and an in 28 also shown substantially disk-shaped second clamping element 452 . In the example shown, there is the first clamping element 450 made of a plastic, for example a POM, and the second clamping element 452 made of a metal. The second clamping element 452 further comprises two oppositely arranged guide projections 454 going through the elongated hole 426 through into an annular guide groove 456 of the first clamping element 450 intervene, as in particular in the sectional view of 23 clearly visible. First and second clamping element 450 , 452 each also have a through opening 458 , 460 to pass through a fastening bolt that is in the 22nd to 28 is not shown in detail. In 23 is still a dowel 424 shown, which is used for anchoring in the carrier, for example a carrier wall. Then the second clamping element 452 , Support element 444 and first clamping element 450 a fastening bolt is screwed through the anchor, in 23 from right to left. In the fully assembled state, the support element 444 in its rotational position on the one hand frictionally through the interaction of the clamping elements 450 , 452 and their bracing by means of the fastening bolt in the dowel 424 and on the other hand, non-positively and positively in the retaining rail 412 held.

Especially in the 22nd and 24 are also several around the circumference of the support element 444 provided holding slots 462 to recognize. In this can to hold the support element 444 For example, a retaining wire or retaining strap of the object can be used if it does not have a retaining rail.

In the 26th and 27 is a first clamping element 450` shown according to a further embodiment that instead of the first clamping element 450 can be used. The first clamping element 450` differs from the first clamping element 450 on the one hand, that instead of the annular guide groove 456 two pilot holes 456 ' are provided in which the guide projections in the assembled state 454 of the second clamping element 452 intervention. Also the first clamping element 450` has a central through opening 458 ' for passing through a fastening bolt, like this for the first clamping element 450 was explained. The function of the first clamping element 450 ' corresponds to the function of the first clamping element 450 . Another difference is that the first clamping element 450` in the example shown has a corrugated surface on one side, namely on the in 27 surface to be recognized. The corrugated surface is intended to rest on the carrier in the assembled state and thus to increase the clamping forces. The opposite side of the first clamping element 450` is designed smooth in the example shown. Of course, it would also be possible for the first clamping element 450` has a corrugated surface on both sides, or that the first clamping element 450` is smooth on both sides. Also the first clamping element 450` can consist of a plastic, for example a POM.

In the 29 to 31 is a support element according to the invention 544 shown according to a further embodiment. The support element 544 corresponds in its basic form to the supporting element 444 out 24 . On three of its outer edges it has a jagged shape with a plurality of holding slots 562 forms. Like the retaining element 444 out 24 also has the retaining element 544 from the 29 to 31 an elongated hole 526 , through the one in 32 shown fastening bolt 510 in different positions along the elongated hole 526 can be performed. In the embodiment according to 29 to 31 is with the support element 544 a first clamping element on a first side 550 connected in one piece and a second clamping element on an opposite second side 552 connected in one piece. The clamping elements 550 and 552 each have a slot 526 corresponding elongated hole and are in their outer contour to the outer contour of the support element 544 adjusted so that between the outer edges of the clamping elements 550 , 552 and the outer edges of the support element 544 there is essentially the same distance in each case. Of course, the clamping elements 550 , 552 but also have a different shape. The clamping elements 550 , 552 each have a structured surface, in particular a corrugation, as from a comparison of the 29 and 30th With 31 clearly visible. The clamping elements 550 , 552 can for example consist of plastic. Also the support element 544 can be made of plastic. This enables simple production using the plastic injection molding process.

In 32 is the supporting element 544 from the 29 to 31 im on a carrier 52 shown attached state. In a hole in the carrier 52 is a dowel 524 used, which can be a standard dowel, for example. By the elongated hole 526 of the support element 544 through it is a fastening bolt 510 out, which can also be a standard screw bolt, for example. In particular due to the frictional connection between the in 32 on the surface of the carrier 52 adjacent second clamping element 552 through the grooved plastic surface of the clamping element 552 is transported further, the support element 544 in a particularly simple manner in different orientations on the carrier 52 be clamped. The provision of clamping elements 550 , 552 on both opposite sides of the support element 544 leads to a further increased flexibility during assembly.

List of reference symbols

10

Fastening bolts

12

Shaft section

14th

External thread

15th

Introductory

16

Bolt head section

18th

Engaging portion

20th

First ribs

22nd

Interlocking

24

Dowels

26th

admission

28

Slots

30th

Elastic holding arms

32

Flange section

34

Second ribs

36

Picture Frame

38

Frame angle

40

Positions

42

Chamfer

44

Support element

46

Through opening

48

Ledges

50

Recordings

52

carrier

116

Bolt head section

120

First ribs

138

Holding frame

142

Chamfer

144

Support element

146

Through opening

148

Appendix

210

Fastening bolts

216

Bolt head section

224

Dowels

226

admission

228

Slots

230

Elastic holding arms

232

Flange section

324

Dowels

326

admission

328

Slots

330

Elastic holding arms

332

Flange section

334

Second ribs

412

Holding rail

424

Dowels

426

Long hole

444

Support element

446

optional marking

448

Clamping projections

450

first clamping element

450`

first clamping element

452

second clamping element

454

Leadership tabs

456

Guide groove

456 '

Guide hole

458

Through opening

458 '

Through opening

460

Through opening

462

Holding slots

544

Support element

550

first clamping element

552

second clamping element

562

Holding slots

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102010060618 A1 [0004, 0005]
• DE 202014100230 U1 [0005]

Claims (23)

Fastening system for fastening an object (36) to a carrier (52), in particular a carrier wall, comprising a dowel (24, 224, 324, 424) which can be inserted into the carrier and into which a fastening bolt (10, 210) can be screwed, characterized that a support element (44, 144, 444, 544) is provided for supporting the object (36), the outer contour of which executes a stroke when the support element (44, 144, 444, 544) rotates about a longitudinal axis, and that holding means are provided are for holding the support element (44, 144, 444, 544) in different rotational positions. Fastening system according to Claim 1 , characterized in that the support element (44, 144, 444, 544) has a through opening (46, 146) for passing the fastening bolt (10, 210) through, the support element (44, 144, 444, 544) between the fastening bolt ( 10, 210) and the dowel (24, 224, 324, 424) or the carrier (52) can be clamped. Fastening system according to one of the preceding claims, characterized in that the holding means comprise frictional locking means with which the support element (44, 144, 444, 544) can be frictionally held in different rotational positions. Fastening system according to Claim 3 , characterized in that the frictional connection means a first clamping element (450, 450 ', 550) which can be clamped between the support element (444, 544) and the carrier and has a through opening (458, 458') for the fastening bolt and / or one between the fastening bolt and a second clamping element (452, 552) with a through opening (460) for the fastening bolt, which can be arranged in a clamping manner on the support element (444, 544). Fastening system according to Claim 4 , characterized in that the first clamping element (450, 450 ', 550) and / or the second clamping element (452, 552) is disc-shaped. Fastening element according to one of the Claims 4 or 5 , characterized in that the first clamping element (550) and / or the second clamping element (552) is formed in one piece with the support element (544). Fastening element according to one of the Claims 4 to 6th that the first clamping element (550) and / or the second clamping element (552) has a structured surface. Fastening system according to one of the preceding claims, characterized in that the support element (444, 544) has an elongated hole (426, 526) for the fastening bolt, so that the support element (444, 544) is in different positions along the elongated hole (426, 526) can be held. Fastening system according to one of the preceding claims, characterized in that several outer edges of the support element (444, 544) each run along a straight line and at an angle to one another. Fastening system according to one of the preceding claims, characterized in that the holding means comprise a holding rail (412) which can be fastened to the object and into which the holding element can be inserted and held in different rotational positions. Fastening system according to Claim 10 , characterized in that the support element (444, 544) can be held in the holding rail (412) in a clamping manner. Fastening system according to Claim 11 , characterized in that the support element (444, 544) and / or the holding rail (412) have clamping elements to increase the clamping force, preferably clamping projections (448) and / or clamping depressions. Fastening system according to one of the preceding claims, characterized in that the holding means comprise first holding means on the support element (44, 144, 444, 544) and second holding means on the dowel (24, 224, 324, 424, 524), and that the holding means are designed for this purpose are to hold the support element (44, 144, 444, 544) in different rotational positions with respect to the dowel (24, 224, 324, 424, 524). Fastening system according to one of the preceding claims, characterized in that the holding means comprise form-fitting means with which the support element (44, 144, 444, 544) can be held in a form-fitting manner in different rotational positions. Fastening system according to Claim 14 , characterized in that the interlocking means are at least partially formed on the outside of a section (12) formed on the support element (144, 444) first ribs (20, 120) and at least partially formed on the inner side of the dowel (24, 324, 424) second ribs (34, 334) corresponding to the first ribs (20, 120). Fastening system according to one of the Claims 14 or 15th , characterized in that the interlocking means on a rear side of the Form-fit elements (48) formed on the support element (44) and form-fit elements (50) formed on a head side of the dowel (224, 424) which faces the rear side of the support element (44, 444) and corresponds to the form-fit elements (48) of the support element (44) ), include. Fastening system according to Claim 16 , characterized in that the head side of the dowel (224, 424) is formed by a flange section (232) of the dowel (224, 424). Fastening system according to one of the preceding claims, characterized in that the outer contour of the support element (44, 144, 444, 544) has a polygonal shape. Fastening system according to one of the preceding claims, characterized in that the outer contour of the support element (44, 144, 444, 544) has an oval or rectangular shape with rounded corners. Fastening system according to one of the preceding claims, characterized in that the support element (44, 144, 444, 544) is disk-shaped. Fastening system according to one of the preceding claims, characterized in that it further comprises the fastening bolt (10, 210), the fastening bolt (10, 210) having a shaft section (12) and a bolt head section (16, 116, 216). Fastening system according to Claim 21 , characterized in that the support element is formed by the bolt head section (16, 116) of the fastening bolt (10). System comprising a carrier (52), preferably a carrier wall (52), and an object (36) fastened to it by means of at least one fastening system according to one of the preceding claims, preferably a picture frame (36), a frameless picture, a tenter frame, a mirror frame, a frameless mirror or part of a shelving system.

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