AU2021339792A1 - Fastening device, and method for attaching a fastening device to at least one component - Google Patents

Abstract

The invention relates to a fastening device (1) and to a method for attaching a fastening device (1) to at least one component (2), the fastening device (1) consisting of: a screw (23, 35, 39), which has a longitudinal axis (17), a head (15), a thread (25) and an end (18) facing away from the head (15); at least one nut (5); and at least one fastening element (4, 37, 42, 43), which is arranged between the head (15) of the screw (23, 35, 39) and a nut (5) and has a bore hole (8) for the thread (25) of the screw (23, 35, 39), or consisting of: a threaded rod (3), which has a longitudinal axis (17), a thread (25) and two ends (18); at least two nuts (5); and at least one fastening element (4, 37, 42, 43), which is arranged between the nuts (5) and has a bore hole (8, 38, 44) for the thread (25) of the threaded rod (3), wherein the screw (23) or the threaded rod (3) is connected to at least one fastening element (4, 37, 42, 43) by at least one form-locking connection.

Description

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MEFA Befestiqungs- und Montagesysteme GmbH

Fastening device; method of attaching a fastening device onto at least one component

State of the Art

The invention is based on a fastening device according to the preamble of claim 1 and on a method of attaching a fastening device onto at least one component according to the preamble of claim 17.

German Patent Specification DE 39 00 669 C1 discloses a hammer-head bolt for a mounting window which has a penetrating portion shaped in the form of a point, a tooth or a cutting edge and formed on the inward-facing side of the head so as to secure the components to be connected and prevent them from slipping out of place.

To improve the anti-slip feature, German Patent Specification DE 197 18 230 B4 proposes that a toothed washer placed on the threaded shaft of the head bolt be provided and inserted between a workpiece that is to be fastened by means of a head bolt and an anchor rail, which toothed washer has teeth formed in the region of the free shanks of the anchor rail forming the slit, and associated therewith, whereby both a nonpositive engagement and a positive engagement are formed. The disadvantage here is that a twisting of the toothed washer while the bolt is being tightened cannot be excluded.

To overcome this disadvantage, German Patent Specification DE 10 2006 052 400 B4 describes a fastening device which consists of a bolt, a nut, and at least one fastening element arranged between the head of the bolt and the nut and including a hole for the thread of the bolt, or which consists of a threaded rod, two nuts, and at least one fastening element arranged

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between said nuts and including a hole for the thread of the threaded rod, with at least one raised portion being arranged on the side of the head of the bolt facing towards the nut and/or on the side of the fastening element facing towards the component, with the fastening element having at least one nose formed on its side facing towards the component and said nose of the fastening element being apt to be brought into operative engagement with an opening of the component to be connected and/or with a plurality of openings of the components to be connected, or with the noses of the fastening element being apt to be brought into operative engagement with at least one opening of the component to be connected and/or with a plurality of openings of the components to be connected. In the previously known fastening device, the bolt, which is in particular a hammer-head bolt, is rotated by 90 once it has been passed through the components to be fastened together. Advantage is taken herein from the principle of static friction (nonpositive engagement) between the bolt and the nut. The disadvantage here is that notwithstanding the given static friction between the bolt and the nut, the head may still slip out of place while the device is being secured. To minimise this slipping out of place during the mounting process, the use of both hands is required to accomplish the installation. Such installation processes may thus be delicate, difficult, and time consuming.

Therefore, International Patent Application WO 2018/023154 Al proposes a fastening device for connecting components, said fastening device including a threaded rod which optionally has a head and a fastening nut, or a nut functioning as a head and a fastening nut, a fastening element and a spring element (biasing element), said fastening element being positioned on the threaded rod between said head and said nut, or between said nut functioning as a head and said fastening nut, and the spring element (biasing element) biasing the fastening element in the direction of the head or in the direction of the nut functioning as a head. The advantage of this previously known fastening element is that due to the spring element, which, in the case of a threaded rod having a head, is arranged between

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the fastening element and the head, and, in the case of a threaded rod having a nut functioning as a head and a fastening nut, is arranged between the fastening element and the nut functioning as a head, the static friction between the head and the fastening nut or between the nut functioning as a head and the fastening nut, is considerably increased, whereby the screwing-in is facilitated. The disadvantage, however, is that a positioning of the fastening nut which may possibly be necessary and which may require some twisting of the fastening nut, carried out by means of pressure exerted on the head or on the nut functioning as a head while simultaneously or subsequently rotating the head or the threaded rod and the nut functioning as a head, may not be ensured in a reliable manner due to circumstances such as a jamming of the fastening nut on the component which, in turn, may cause a static friction between the fastening nut and the threaded rod to be overcome.

It is therefore an object of the invention to provide a fastening device that overcomes the disadvantages of the state of the art and to provide a method of attaching a fastening device onto at least one component which overcomes the disadvantages of the state of the art.

The invention and its advantages

The inventive fastening device for at least one component having the features of claim 1 and the inventive method of attaching a fastening device onto at least one component having the features of claim 17 have, in contrast, the advantage that the fastening device consists of a bolt which has a longitudinal axis and includes a head, a thread, and an end facing away from the head, of at least one nut and at least one fastening element arranged between the head of the bolt and a nut and including a hole for the thread of the bolt, or consists of a threaded rod which has a longitudinal axis and a thread and two ends, of at least two nuts and at least one fastening element arranged between said nuts and including a hole for the

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thread of the threaded rod, said bolt or said threaded rod being connected to at least one fastening element by means of at least one positive engagement connection. The positive-engagement connection between the bolt and the fastening element or between the threaded rod and the fastening element may thus be achieved without any further auxiliaries. In particular, the positive-engagement connection between the bolt and the fastening element or between the threaded rod and the fastening element may be achieved without the necessity of screwing, and tightening, a nut on the thread of the bolt or of the threaded rod.

According to an advantageous configuration of the inventive fastening device, at least one positive-engagement connection is a slot-and-key connection consisting of a slot and at least one key corresponding to the slot, and/or the bolt has a collar that may be introduced into the hole, said at least one positive-engagement connection being a collar-and-hole connection which consists of the collar and the hole communicating with the shape of the collar, and/or the bolt has at least one flat and the hole has at least one flat, said at least one positive-engagement connection being a flat-and-flat connection which consists of at least one flat and at least one flat, respectively.

According to a pertinent advantageous configuration of the inventive fastening device, at least one key is arranged on a fastening element and the slot is arranged on the bolt or on the threaded rod. Preferably, the slot is arranged on the thread of the bolt or on the thread of the threaded rod.

According to an additional advantageous configuration of the inventive fastening device, at least one key is at least partially arranged within the hole of a fastening element.

According to an additional advantageous configuration of the inventive fastening device, at least one slot is arranged at least partially parallel with the longitudinal axis of the bolt or at least partially parallel with the

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longitudinal axis of the threaded rod, and/or at least one slot is arranged at least partially perpendicular with respect to the longitudinal axis of the bolt or at least partially perpendicular with respect to the longitudinal axis of the threaded rod, and/or at least one slot is arranged at least partially at an angle with respect to the longitudinal axis of the bolt or at least partially at an angle with respect to the longitudinal axis of the threaded rod, and/or at least one slot at least partially describes a spatial curve on the bolt or on the threaded rod. It is therefore conceivable that the forced guidance caused by the slot-and-key connection has a slot in the form of a connecting link arranged on the bolt or on the threaded rod.

According to an additional advantageous configuration of the inventive fastening device, at least one raised portion is arranged on the side of the head of the bolt facing towards the nut and/or at least one raised portion is arranged on the side of the fastening element facing towards the component.

According to a pertinent advantageous configuration of the inventive fastening device, at least one of the raised portions is shaped in the form of a spike, a tooth or a cutting edge, thus allowing for point, line or surface contact, or the like, of the raised portion with the adjacent component.

According to an additional advantageous configuration of the inventive fastening device, at least one raised portion has cutting faces.

According to a pertinent advantageous configuration of the inventive fastening device, the cutting faces of at least one raised portion are at an angle of between 300 and 60.

According to a pertinent advantageous configuration of the inventive fastening device, the cutting faces of at least one raised portion are at an angle of 45.

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According to an additional advantageous configuration of the inventive fastening device, at least one raised portion has a higher grade of hardness than the material contacting said at least one raised portion, the fastening means and/or the bolt.

According to a pertinent advantageous configuration of the inventive fastening device, at least one raised portion becomes engaged with at least one component by positive and/or nonpositive engagement.

According to an additional advantageous configuration of the inventive fastening device, the positive-engagement connection is a slot-and-key connection which consists of a slot and at least one key corresponding to said slot, at least one raised portion arranged on the fastening element being a constituent part of a key arranged on the fastening element.

According to an additional advantageous configuration of the inventive fastening device, at least one of the fastening elements has a nose formed on its side facing towards the component.

According to a pertinent advantageous configuration of the inventive fastening device, the noses of a fastening element are of different lengths.

According to an additional advantageous configuration of the inventive fastening device, the nose of the fastening element may be brought into operative engagement with an opening of the component to be connected and/or with a plurality of openings of the components to be connected, or the noses of the fastening element may be brought into operative engagement with at least one opening of the component to be connected and/or with a plurality of openings of the components to be connected. Any twisting of the fastening element during the tightening process may thus be precluded.

According to an additional advantageous configuration of the inventive

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fastening device, a spring element is arranged between the head of the bolt and a fastening element and/or a spring element is arranged between a nut and a fastening element and/or a spring element is arranged between a component and a fastening element. Preferably, the spring element is a compression spring or a tension spring.

According to an additional advantageous configuration of the inventive fastening device, the wall of the hole for the thread is smaller than the height of the fastening element. The fastening element is thus very robust and well protected against deformation when forces are applied thereon.

According to an additional advantageous configuration of the inventive fastening device, the hole of at least one fastening element on which no key corresponding to a slot is arranged is provided with a thread, whereby the fastening element assumes the additional function of a nut, which makes the use of a specific nut superfluous.

According to an additional advantageous configuration of the inventive fastening device, at least one component is a piece of flat material, a C profile, a square tube, or the like. Sectional bars or profiles of any shape as well as large-format components such as slabs or the like would also be conceivable.

According to an additional advantageous configuration of the inventive fastening device, components to be connected have each at least one opening designed for attaching the fastening device. It is conceivable that the wall of the opening is not entirely closed.

According to a pertinent advantageous configuration of the inventive fastening device, the opening on at least one of the components to be connected is realised as a round hole or an elongated hole and/or the components to be connected are at least partially provided with differently shaped openings and/or at least one of the components to be connected

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has differently shaped openings provided thereon.

According to an additional advantageous configuration of the inventive fastening device, the openings of the components to be connected are arranged offset from each other and/or are of different lengths.

According to an additional advantageous configuration of the inventive fastening device, the bolt is a round bolt, a hammer-head bolt, or the like.

According to an additional advantageous configuration of the inventive fastening device, at least one marking is arranged on the end of the bolt facing away from the head or on at least one end of the threaded rod, and/or at least one marking is arranged on a fastening element provided with at least one key. Preferably, the end of the bolt facing away from the head or at least one end of the threaded rod has an end face arranged thereon on which said at least one marking is arranged. Such a marking arranged on the end of the bolt facing away from its head may serve for determining the position the bolt head, in particular the hammer head. A marking arranged on a fastening element may serve for determining the position of a nose or of a plurality of noses. Furthermore, a marking arranged on the end of the bolt facing away from the head, on at least one end of the threaded rod, or on a fastening element may indicate a direction of rotation.

According to an advantageous configuration of the inventive method of attaching a fastening device onto at least one component, the fastening device consisting of a bolt which has a longitudinal axis and includes a head, a thread, and an end facing away from the head, of at least one nut and at least one fastening element arranged between the head of the bolt and a nut and including a hole for the thread of the bolt, or consisting of a threaded rod which has a longitudinal axis and a thread and two ends, of at least two nuts and at least one fastening element arranged between said nuts and including a hole for the thread of the threaded rod, said fastening

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device having at least intermittently at least one positive-engagement connection whereby the fastening element is at least intermittently connected with the bolt or the threaded rod in such a manner that when the bolt or the threaded rod is rotated, the fastening element will at least intermittently be rotated in conjunction therewith, or that when the fastening element is rotated, the bolt or the threaded rod will at least intermittently be rotated in conjunction therewith, and/or that when the bolt or the threaded rod is displaced on its longitudinal axis, the fastening element will at least intermittently be rotated, or that when the fastening element is displaced along the longitudinal axis of the bolt or of the threaded rod, the bolt or the threaded rod (3) will at least intermittently be rotated, the positive engagement connection employed is at least one slot-and-key connection which consists of a slot and at least one key corresponding to said slot, and/or the positive-engagement connection employed is a collar-and-hole connection which consists of a collar arranged on the bolt and insertable into the hole and of a hole communicating with the shape of the collar, and/or the positive-engagement connection employed is a flat-and-flat connection which consists of at least one flat arranged on the bolt and at least one flat arranged on the hole.

According to an additional advantageous configuration of the inventive method, when at least one slot-and-key connection is employed, at least one key is arranged on a fastening element and the slot is arranged on the thread of the bolt or on the thread of the threaded rod.

According to an additional advantageous configuration of the inventive method, the fastening device has at least one spring element, whereby a rotation and/or a displacement of the bolt, the threaded rod and/or the fastening element is at least partially influenced by an elastic force. Preferably, the spring element employed is a compression spring or a tension spring.

According to an additional advantageous configuration of the inventive

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method, the fastening device employed is a fastening device as claimed in any one of claims 1 to 16.

Further advantages and advantageous configurations of the invention may be found in the following description, in the claims and in the drawings.

Drawing

Preferred embodiments of the object of the invention are represented in the drawings and will be described hereunder in greater detail. In the drawings:

Fig. 1 is an exploded representation of a fastening device according to the present invention,

Fig. 2 is a perspective representation of the inventive fastening device, according to Fig. 1,

Fig. 3 is a representation in sectional drawing of the inventive fastening device, according to Fig. 1,

Fig. 4 is an exploded representation of a further example embodiment of an inventive fastening device,

Fig. 5 is a perspective representation of the inventive fastening device, according to Fig. 4,

Fig. 6 is a representation in sectional drawing of the inventive fastening device, according to Fig. 4,

Fig. 7 is an exploded representation of a further example embodiment of an inventive fastening device,

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Fig. 8 is a perspective representation of the inventive fastening device, according to Fig. 7,

Fig. 9 is a representation in sectional drawing of the inventive fastening device, according to Fig. 7,

Fig. 10 is an exploded representation of an inventive fastening device according to Fig. 4,

Fig. 11 is a perspective representation of the inventive fastening device, according to Fig. 10,

Fig. 12 is a representation in sectional drawing of the inventive fastening device, according to Fig. 10,

Fig. 13 is an exploded view of an inventive fastening device,

Fig. 14 is a perspective representation of the inventive fastening device, according to Fig. 13,

Fig. 15 is a representation in sectional drawing of the inventive fastening device, according to Fig. 13,

Fig. 16 shows two components to be connected with different openings for an inventive fastening device,

Fig. 17 is a side view of a bolt,

Fig. 18 is another side view of a bolt, according to Fig. 17,

Fig. 19 shows a detail view of the image section A, according to Fig. 18,

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Fig. 20 is a top view of the end face of a bolt, according to Fig. 17,

Fig. 21 is a top view of the head of a bolt, according to Fig. 17,

Fig. 22 is a perspective representation of the bolt, according to Fig. 17,

Fig. 23 is a perspective representation of a bolt on which a fastening element is arranged,

Fig. 24 is a top view of the end face of a bolt on which a fastening element is arranged, according to Fig. 23,

Fig. 25 is a perspective view of the fastening element, according to Fig. 23,

Fig. 26 on the right-hand side is a perspective view of an inventive fastening device including a fastening element whose key is in a position within the course of the slot which is shown on the left-hand side,

Fig. 27 on the right-hand side is a perspective view of an inventive fastening device including a fastening element whose key is in a position within the course of the slot which is shown on the left-hand side,

Fig. 28 on the right-hand side is a perspective view of an inventive fastening device including a fastening element whose key is in a position within the course of the slot which is shown on the left-hand side,

Fig. 29 on the right-hand side is a perspective view of an inventive fastening device having a spring element and including a fastening element whose key is in a position within the course

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of the slot which is shown on the left-hand side,

Fig. 30 on the right-hand side is a perspective view of an inventive fastening device having a spring element and including a fastening element whose key is in a position within the course of the slot which is shown on the left-hand side,

Fig. 31 on the right-hand side is a perspective view of an inventive fastening device having a spring element and including a fastening element whose key is in a position within the course of the slot which is shown on the left-hand side,

Fig. 32 is a perspective view of a further fastening element,

Fig. 33 is a further perspective view of the fastening element, according to Fig. 32,

Fig. 34 is a top view of the fastening element, according to Fig. 32,

Fig. 35 is a top view of the fastening element, according to Fig. 33,

Fig. 36 is a side view of the fastening element, according to Fig. 33,

Fig. 37 is a sectional view of the fastening element along the line A-A, according to Fig. 36,

Fig. 38 is a detail view of the image section B, according to Fig. 36,

Fig. 39 is a detail view of the image section C, according to Fig. 36,

Fig. 40 is a detail view of the image section D, according to Fig. 36,

Fig. 41 is a detail view of the image section E, according to Fig. 37,

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Fig. 42 is a perspective view of a further fastening element,

Fig. 43 is a further perspective view of the fastening element, according to Fig. 42,

Fig. 44 is a top view of the fastening element, according to Fig. 42,

Fig. 45 is a top view of the fastening element, according to Fig. 43,

Fig. 46 is a side view of the fastening element, according to Fig. 43,

Fig. 47 is a sectional view of the fastening element 4 along the line A A, according to Fig. 46,

Fig. 48 is a detail view of the image section B, according to Fig. 46,

Fig. 49 is a detail view of the image section C, according to Fig. 46,

Fig. 50 is a detail view of the image section D, according to Fig. 47,

Fig. 51 is a side view of a further example embodiment of a bolt,

Fig. 52 is a further side view of a bolt, according to Fig. 51,

Fig. 53 is a top view of the end face of a bolt, according to Fig. 51,

Fig. 54 is a perspective representation of the bolt, according to Fig. 51,

Fig. 55 is a perspective view of a further fastening element,

Fig. 56 is a further perspective view of the fastening element, according to Fig. 55,

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Fig. 57 is a top view of the fastening element, according to Fig. 55,

Fig. 58 is a top view of the fastening element, according to Fig. 56,

Fig. 59 is a side view of the fastening element, according to Fig. 55,

Fig. 60 is a side view of the fastening element, according to Fig. 55,

Fig. 61 is a perspective representation of an inventive fastening device which connects two thin components and in which the nut has not yet been tightened,

Fig. 62 is a perspective representation of an inventive fastening device, according to Fig. 61, which connects two thin components and in which the nut has been tightened,

Fig. 63 is a perspective representation of an inventive fastening device which connects a thin and a thick component with each other and in which the nut has not yet been tightened,

Fig. 64 is a perspective representation of an inventive fastening device, according to Fig. 63, which connects a thin and a thick component with each other and in which the nut has been tightened,

Fig. 65 is a side view of a further example embodiment of a bolt,

Fig. 66 is a further side view of a bolt, according to Fig. 65,

Fig. 67 is a top view of the end face of a bolt, according to Fig. 65,

Fig. 68 is a perspective representation of the bolt, according to Fig. 65,

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Fig. 69 is a perspective view of a further fastening element,

Fig. 70 is a further perspective view of the fastening element, according to Fig. 69,

Fig. 71 is a top view of the fastening element, according to Fig. 69,

Fig. 72 is a top view of the fastening element, according to Fig. 70,

Fig. 73 is a side view of the fastening element, according to Fig. 70,

Fig. 74 is a sectional view of the fastening element along the line A-A, according to Fig. 73,

Fig. 75 is a detail view of the image section E, according to Fig. 74,

Fig. 76 is a perspective view of a further fastening element,

Fig. 77 is a further perspective view of the fastening element, according to Fig. 76,

Fig. 78 is a top view of the fastening element, according to Fig. 76,

Fig. 79 is a top view of the fastening element, according to Fig. 77,

Fig. 80 is a side view of the fastening element, according to Fig. 77,

Fig. 81 is a sectional view of the fastening element 4 along the line A A, according to Fig. 80, and

Fig. 82 is a detail view of the image section D, according to Fig. 81.

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Description of the example embodiment

Fig. 1 shows an exploded representation of an inventive fastening device 1 for connecting at least one component 2, the two components 2 represented here being represented, by way of example, as pieces of flat material. The inventive fastening device 1 is formed of a threaded rod 3 which has a slot not represented here and whose thread is not explicitly represented either, of at least one fastening element 4 and of nuts 5, said threaded rod 3 being apt to be passed along the axis 6 through openings 7, represented here, by way of example, as elongate holes, of the components 2 and through holes 8 of the fastening elements 4. Preferably, at least one fastening element 4 has raised portions 9 which, in a tightened condition, are engaged with the adjacent component 2 in a positive and in a nonpositive manner.

Fig. 2 shows a perspective representation of the inventive fastening device 1, according to Fig. 1, in a tightened condition. In order to prevent the fastening element 4, which is provided with at least one raised portion 9, from becoming inadvertently twisted during the tightening process, the fastening element 4 preferably has a nose 10 which protrudes into the opening 7 of the adjacent component 2. It is also conceivable that the nose is of greater length, so that it may be brought into contact with a plurality of components 2.

Fig. 3 shows a representation of the inventive fastening device 1 in a section passing through the axis 6, according to Fig. 1. Here it becomes clear that in the tightened condition, the raised portions 9 penetrate into their respectively adjacent components 2, which prevents the components 2 to be connected and the fastening device 1 from slipping out of place.

Fig. 4 shows an exploded representation of another example embodiment of an inventive fastening device in which the threaded rod 2 shown in Fig. 1

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has been replaced by a bolt which has equally at least one slot that is not represented and whose thread is not explicitly represented and which is preferably a hammer-head bolt 11. Preferably, the bolt has a collar 12 which protrudes, along the axis 13, at least into the opening 7 of the adjacent component 2 when the inventive fastening device 1 is being tightened. A fastening element 4, whose preferred structure has been described at Fig. 1, may be slid onto the bolt and a nut 5 may be screwed onto it.

Fig. 5 shows a perspective representation of the inventive fastening device 1, according to Fig. 2, in a tightened condition.

Fig. 6 shows a representation of the inventive fastening device 1 in a section passing through the axis 13, according to Fig. 4.

Fig. 7 shows an exploded representation of a further example embodiment of an inventive fastening device 1. The fastening device 1 shown in Fig. 7 differs from the fastening device 1 shown in Fig. 4 in that on the side 14 of the head 15 of the hammer-head bolt 11 which faces towards the component 2 and which has a slot not represented here and whose thread is not explicitly represented, raised portions 9 are arranged which are in connection with the adjacent components 2 in a nonpositive and in a positive manner along the axis 16, which corresponds to the longitudinal axis 17, when the inventive fastening device 1 is in a tightened condition. The bolt, on its end 18 facing away from the head 15, has an end face 19 whereon a marking 20 is arranged by which the position of the head 15 is recognisable.

Fig. 8 shows a perspective representation of the inventive fastening device 1, according to Fig. 7, in a tightened condition. With the aid of the marking , it can be recognised that the invisible head 15 of the hammer-head bolt 11 is oriented perpendicularly with respect to the opening 7. By untightening the nut 5, the hammer-head bolt 11 may be rotated by 90 about its longitudinal axis 17, such that the inventive fastening device 1

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may be removed in an upward direction by passing the head 15 of the hammer-head bolt 11 through the openings 7.

Fig. 9 shows a representation of the inventive fastening device 1 in a section passing through the axis 16, according to Fig. 7. Here it becomes clear that both the raised portions 9 of the fastening element 4 and the raised portions 9 of the hammer-head bolt 11 penetrate into the respectively adjacent component 2 by positive and nonpositive engagement.

Fig. 10 shows an exploded representation of an inventive fastening device 1, according to Fig. 4. The inventive fastening device 1 shown in Fig. 10 corresponds to the inventive fastening device 1 shown in Fig. 4 and serves to explain that the inventive fastening device 1 can be used to connect, along the axis 21, components 2 which have different openings 7.

Fig. 11 shows a perspective representation of the inventive fastening device 1, according to Fig. 10, in a tightened condition.

Fig. 12 shows a representation of the inventive fastening device 1 in a section passing through the axis 21, according to Fig. 10.

Fig. 13 shows an exploded representation of an inventive fastening device 1, according to Fig. 4. The inventive fastening device 1 shown in Fig. 13 corresponds to the inventive fastening device 1 shown in Fig. 4 and serves to explain that the inventive fastening device 1 can be used to connect, along the axis 22, components 2 which are arranged at an angle with respect to each other.

Fig. 14 shows a perspective representation of the inventive fastening device 1, according to Fig. 13, in a tightened condition.

Fig. 15 shows a representation of the inventive fastening device 1 in a

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section passing through the axis 22, according to Fig. 13.

Fig. 16 shows two components 2 to be connected, which are represented side by side for illustrative purposes and which have different openings 7 for an inventive fastening device 1. The openings 7 of the components 2 are of different lengths, such that the components 2 may be steplessly displaced with respect to each other and screwed in place at any desired position. The dimensions indicated in Fig. 16 by way of example are in mm.

Fig. 17 shows a side view of a bolt 23 whose thread is not explicitly represented and which is a hammer-head bolt 11 of an inventive fastening device 1. The bolt 23 has a slot 24 which extends parallel with the longitudinal axis 17. The slot 24 is part of a slot-and-key connection, with at least one key being arranged on a fastening element 4, not represented here. Due to the slot-and-key connection, the bolt 23 and the fastening element 4 are connected by positive engagement, such that, owing to the forced guidance, a rotation of the bolt 23 causes a rotation of the fastening element 4 which is otherwise slidably arranged on the longitudinal axis 17 of the bolt 23. In the case of a straight slot 24, as represented in Fig. 17, only the position between the fastening element 4 and the bolt 23 is fixed. This has the effect that a rotation of the bolt 23 enables the fastening element 4 to rotate in conjunction therewith, whereby the nose 10 of a fastening element 4 may, for example, be positioned within an opening 7 of a component 2, and that a rotation of the fastening element 4 enables the bolt 23 to rotate in conjunction therewith, whereby the head 15 of the bolt 23 may, for example, be positioned in such a manner as to hold the component 2 in place from behind, once it has been passed through an opening 7 of a component 2.

Fig. 18 shows a further side view of a bolt 23, according to Fig. 17.

Fig. 19 shows a detail view of the image section A, according to Fig. 18, including the marking 20.

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Fig. 20 shows a top view of the end face 19 of a bolt 23, according to Fig. 17.

Fig. 21 shows a top view of the end face 15 of a bolt 23, according to Fig. 17.

Fig. 22 shows a perspective representation of a bolt 23, according to Fig. 17.

Fig. 23 shows a perspective representation of a bolt 23 on which a fastening element 4 is arranged. The bolt 23, which is realised in the form of a hammer-head bolt 11, has a thread 25 in which a slot 24 is arranged. For better illustration of the zigzag-shaped course of the slot 24 by which the connecting link is formed, the fastening element 4, which has a nose 10 and has a marking 26 by which e.g. the position of the nose 10 is discernible, is represented transparently. The slot 24 has slot sections 28, 29, and 30, with the slot sections 28 and 29 being arranged parallel with the longitudinal axis 17 of the bolt 23 and the slot section 30 being arranged at an angle with respect to said longitudinal axis 17 of the bolt 23.

Fig. 24 shows a top view of the end face 19 of a bolt 23 on which a fastening element 4 is arranged, according to Fig. 23. The fastening element 4 has a key 27 which is shaped in a hemispherical form. Due to the slot 24 arranged on the bolt and the key 27 arranged on the fastening element 4, a slot-and-key connection is formed by means of which the bolt 23 and the fastening element 4 are connected with each other by positive engagement. A relative movement of the fastening element 4 with respect to the bolt 23 causes the key 27 of the fastening element 4 to follow the course of the slot 24. Whereas in the case of a key 27 guided within the slot sections 28 or 29, this only leads to a displacement of the fastening element 4 along the longitudinal axis 17, in the case of a key 27 guided within the slot section 30, this will lead to a rotation of the fastening element

P DE 8186 WO August 2021 MO/as, ra 22/40

4, in addition to said displacement of the fastening element 4. Preferably, this causes a rotation of the fastening element 4 by 90.

Fig. 25 shows a perspective view of the fastening element 4, according to Fig. 23,

Fig. 26 on the right-hand side shows a perspective view of an inventive fastening device 1 including a fastening element 4 whose key is in a position 31 within the course of the slot 24 which is shown on the left-hand side.

Fig. 27 on the right-hand side shows a perspective view of an inventive fastening device 1 including a fastening element 4 whose key 27 is in a position 32 within the course of the slot 24 which is shown on the left-hand side. A comparison with Fig. 26 reveals that the fastening element 4 is lifted and rotated by 90° relative to the bolt 23 while travelling on the slot section during the positional change that moves the key 27 from position 31 to position 32.

Fig. 28 on the right-hand side shows a perspective view of an inventive fastening device 1 including a fastening element 4 whose key 27 is in a position 33 within the course of the slot 24 which is shown on the left-hand side. A comparison with Fig. 27 reveals that the fastening element 4 is displaceable on the longitudinal axis 17 while travelling on the slot section 29 during the positional change that moves the key 27 from position 32 to position 33. Whether the position 33 will actually be achieved depends on the thickness of the component 2, which is not represented here and which is arranged between the head 15 and the fastening element 4, or on the thickness of the components 2, which are not represented here and which are arranged between the head 15 and the fastening element 4. The inventive fastening device 1 is secured on the component 2 or on the components 2 by tightening the nut. When in the secured condition, the nose 10 is located within at least one opening 7 of one or several

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components 2 and the head 15 holds the adjacent component 2 from behind.

Fig. 29 on the right-hand side shows a perspective view of an inventive fastening device 1 which has a spring element 34 realised in the form of a compression spring and includes a fastening element 4 whose key 27 is in a position 31 within the course of the slot 24 which is shown on the left hand side. Preferably, the fastening element 4 (locking disc), the key 27 and the nut 5 are preassembled on the bolt 23 in such a manner that the key 27 of the fastening element 4 is in position 31, i. e. in the end position of the slot section 28.

Fig. 30 on the right-hand side shows a perspective view of an inventive fastening device 1 which has a spring element 34 realised in the form of a compression spring and includes a fastening element 4 whose key 27 is in a position 32 within the course of the slot 24 which is shown on the left hand side. Using a spring element 34 has the advantage of enhancing static friction (nonpositive engagement) between the head 15 and the nut 5. A comparison with Fig. 29 reveals that the fastening element 4 is lifted and rotated by 900 relative to the bolt 23 while travelling on the slot section 30 during the positional change that moves the key 27 from position 31 to position 32. The positional change of the key 27 from position 31 to position 32 is provoked by exerting pressure onto the end face 19 of the bolt 23 and/or by exerting pressure on the nut 5. Since the fastening element 4, with its nose 10 (holding nose) or with its noses 10, is already secured within the opening 7 of at least one component 2, not represented here, the hammer-head bolt 11 is rotatable. This means that the head 15 of the bolt 23 of the inventive fastening device 1, which is preferably preassembled, is passed through an opening 7 of a component 2, or through a plurality of openings 7 of several components 2, until the fastening element 4, in particular after at least one nose 10 of the fastening element 4 has been introduced into the opening 7 of the adjacent component 2, abuts against said adjacent component 2, which causes the spring element 34 to become

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compressed. This initialises the positional change of the key 27 from position 31 to position 32, such that the head 15 of a bolt 23, once it has been fully inserted through the opening 7 of a component 2, or through the openings 7 of several components 2, is being rotated so as to hold the component(s) 2 from behind.

Fig. 31 on the right-hand side shows a perspective view of an inventive fastening device 1 which has a spring element 34 realised in the form of a compression spring and includes a fastening element 4 whose key 27 is in a position 33 within the course of the slot 24 which is shown on the left hand side. The position 33 is reached by releasing pressure, such that the slot 24, after being rotated by 90, runs towards the bolt head. This also permits to tighten the bolt. Whether the position 33 will actually be achieved depends on the thickness of the component 2, which is not represented here and which is arranged between the head 15 and the fastening element 4, or on the thickness of the components 2, which are not represented here and which are arranged between the head 15 and the fastening element 4. The inventive fastening device 1 is secured on the component 2 or on the components 2 by tightening the nut. It is advantageous that the slot-and key connection not only creates a positive engagement between the fastening element 4 and the bolt 23 but can also be used for initialising a rotational movement or spatial curve. This is theoretically also possible without any spring-biasing and, obviously, without using a threaded rod 3.

When in the secured condition, the nose 10 is located within at least one opening 7 of one or several components 2 and the head 15 holds the adjacent component 2 from behind. Releasing the inventive fastening device 1 is done in a reverse order, such that once the nut 5 has been removed, pressure can be exerted on the end face 19 of the bolt 23 and/or pressure can be exerted on the nut 5, which causes the key 27 to be guided within the slot section 29 in the direction of position 32, whereupon, as the position 32 is reached, pressure reduction permits it to reach position 31, while the head 15 of the bolt 23 is rotated by 90°, such that the

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head 15 may be slid through the opening 7 of a component 2 or through the opening 7 of several components 2, thus making it possible to remove the inventive fastening device 1.

Fig. 32 and Fig. 33 show perspective views of a further fastening element 4. A comparison with Fig. 25 reveals that the fastening element 4 has a rectangular key 27 rather than a hemispherical one.

Fig. 34 shows a top view of the fastening element 4, according to Fig. 32.

Fig. 35 shows a top view of the fastening element 4, according to Fig. 33.

Fig. 36 shows a side view of the fastening element 4, according to Fig. 33.

Fig. 37 shows a sectional view of the fastening element 4 along the line A A, according to Fig. 36.

Fig. 38 shows a detail view of the image section B, according to Fig. 36, including the marking 26.

Fig. 39 shows a detail view of the image section C, according to Fig. 36, including the nose 10. For easier insertion of the nose 10 into the opening 7 of a component 2, the nose 10 is laterally bevelled.

Fig. 40 shows a detail view of the image section D, according to Fig. 36, including the raised portion 9.

Fig. 41 shows a detail view of the image section E, according to Fig. 37, including the raised portion 9.

Fig. 42 and Fig. 43 show perspective views of a further fastening element 4. A comparison with Fig. 32 reveals that the fastening element 4 has two noses 10.

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Fig. 44 shows a top view of the fastening element 4, according to Fig. 42.

Fig. 45 shows a top view of the fastening element 4, according to Fig. 43.

Fig. 46 shows a side view of the fastening element 4, according to Fig. 43.

Fig. 47 shows a sectional view of the fastening element 4 along the line A A, according to Fig. 46.

Fig. 48 shows a detail view of the image section B, according to Fig. 46, including the nose 10. For easier insertion of the nose 10 into the opening 7 of a component 2, the nose 10 is laterally bevelled.

Fig. 49 shows a detail view of the image section C, according to Fig. 46, including the raised portion 9.

Fig. 50 shows a detail view of the image section D, according to Fig. 47, including the raised portion 9.

Fig. 51 shows a side view of a further example embodiment of a bolt 35 whose thread is not explicitly represented, and which is a hammer-head bolt 36, of an inventive fastening device 1. Unlike the bolt 23, so far represented, the bolt 35 has in particular an extended collar 12. Due to the extended collar 12 and to a fastening element 37 as shown in Fig. 55, the bolt 35 and the fastening element 37 are connected by positive engagement, such that, owing to the forced guidance, a rotation of the bolt causes a rotation of the fastening element 37 which is otherwise slidably arranged on the longitudinal axis 17 of the bolt 35. The collar 12, which cooperates with the fastening element 37, thus fixes the relative position between the fastening element 37 and the bolt 35. This has the effect that a rotation of the bolt 35 enables the fastening element 37 to rotate in conjunction therewith, whereby the nose 10 of the fastening element 37

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may, for example, be positioned within an opening 7 of a component 2, and that a rotation of the fastening element 37 enables the bolt 35 to rotate in conjunction therewith, whereby the head 15 of the bolt 35 may, for example, be positioned in such a manner as to hold the component 2 in place from behind, once it has been passed through an opening 7 of a component 2.

Fig. 52 shows a further side view of a bolt 35, according to Fig. 51.

Fig. 53 shows a top view of the end face 19 of a bolt 35, according to Fig. 51.

Fig. 54 shows a perspective representation of a bolt 35, according to Fig. 51.

Fig. 55 and Fig. 56 show perspective views of a further fastening element 37. A comparison with Fig. 25 and Fig. 32 reveals that the fastening element 37 has a rectangular hole 38. Due to the hole 38, the fastening element 37 may be connected to the collar 12 of the bolt 35 by positive engagement.

Fig. 57 shows a top view of the fastening element 37, according to Fig. 55.

Fig. 58 shows a top view of the fastening element 37, according to Fig. 56.

Fig. 59 and Fig. 60 show side views of the fastening element 37, according to Fig 55.

Fig. 61 shows a perspective representation of an inventive fastening device 1 which connects two thin components 2 and in which the nut 5 has not yet been tightened.

Fig. 62 shows a perspective representation of an inventive fastening device

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1, according to Fig. 61, which connects two thin components 2 and in which the nut 5 has been tightened.

Fig. 63 shows a perspective representation of an inventive fastening device 1 which connects a thin and a thick component 2 with each other and in which the nut 5 has not yet been tightened.

Fig. 64 shows a perspective representation of an inventive fastening device 1, according to Fig. 63, which connects a thin and a thick component 2 with each other and in which the nut 5 has been tightened.

Fig. 65 shows a side view of a further example embodiment of a bolt 39 whose thread is not explicitly represented, and which is a hammer-head bolt 40, of an inventive fastening device 1. Unlike the bolts 23 and 35, so far represented, the bolt 39 has in particular a flat 41. Due to the flat 41 and to a fastening element 42 as shown in Fig. 69 or to a fastening element 43 as shown in Fig. 76, the bolt 39 and the fastening element 42 or the fastening element 43 are connected with each other by positive engagement, such that, owing to the forced guidance, a rotation of the bolt 39 causes a rotation of the fastening element 42 or fastening element 43 which is otherwise slidably arranged on the longitudinal axis 17 of the bolt 39. The flat 41, which cooperates with the fastening element 42 or with the fastening element 43, thus fixes the relative position between the fastening element 42 or the fastening element 43 and the bolt 39. This has the effect that a rotation of the bolt 39 enables the fastening element 42 or the fastening element 43 to rotate in conjunction therewith, whereby the nose of the fastening element 42 or of the fastening element 43 may, for example, be positioned within an opening 7 of a component 2, and that a rotation of the fastening element 42 or of the fastening element 43 enables the bolt 39 to rotate in conjunction therewith, whereby the head 15 of the bolt 39 may, for example, be positioned in such a manner as to hold the component 2 in place from behind, once it has been passed through an opening 7 of a component 2.

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Fig. 66 shows a further side view of a bolt 39, according to Fig. 65. A detail view of the image section A including the marking 20 corresponds to the detail view of the image section A as represented in Fig. 19.

Fig. 67 shows a top view of the end face 19 of a bolt 39, according to Fig. 65.

Fig. 68 shows a perspective representation of a bolt 39, according to Fig. 65.

Fig. 69 and Fig. 70 show perspective views of a further fastening element 42. A comparison with Fig. 25, Fig. 32, and Fig. 55 reveals that the fastening element 42 has a hole 44 which has a flat 45 formed on one side thereof. Due to the hole 44, the fastening element 42 may be connected to the flat 41 of the bolt 39 by positive engagement.

Fig. 71 shows a top view of the fastening element 42, according to Fig. 69.

Fig. 72 shows a top view of the fastening element 42, according to Fig. 70.

Fig. 73 shows a side view of the fastening element 42, according to Fig. 70. The detail views of the image sections B, C, and D correspond to the detail views of the image sections B, C, and D as represented in Figs. 38 to 40.

Fig. 74 shows a sectional view of the fastening element 42 along the line A-A, according to Fig. 73.

Fig. 75 shows a detail view of the image section E, according to Fig. 74, including the raised portion 9.

Fig. 76 and Fig. 77 show perspective views of a further fastening element 43. A comparison with Fig. 32 and Fig. 69 reveals that the fastening

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element 43 has two noses 10.

Fig. 78 shows a top view of the fastening element 43, according to Fig. 76.

Fig. 79 shows a top view of the fastening element 43, according to Fig. 77.

Fig. 80 shows a side view of the fastening element 43, according to Fig. 77.

Fig. 81 shows a sectional view of the fastening element 43 along the line A-A, according to Fig. 80.

Fig. 82 shows a detail view of the image section D, according to Fig. 81, including the raised portion 9.

All of the characteristics represented in the description, in the following claims and in the drawing, as considered either in themselves or in any combination with each other, may be deemed essential to the invention.

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List of reference numbers

1 fastening device 2 component 3 threaded rod 4 fastening element nut 6 axis 7 opening 8 hole 9 raised portion nose 11 hammer-head bolt 12 collar 13 axis 14 side facing towards the component head 16 axis 17 longitudinal axis 18 end 19 end face marking 21 axis 22 axis 23 bolt 24 slot thread 26 marking 27 key 28 slot section 29 slot section slot section 31 position

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32 position 33 position 34 spring element bolt 36 hammer-head bolt 37 fastening element 38 hole 39 bolt hammer-head bolt 41 flat 42 fastening element 43 fastening element 44 hole flat

Claims (21)

P DE 8186 WO August 2021 MO/as, ra 33/40 Claims

1. A fastening device (1) for at least one component (2), - consisting of a bolt (23, 35, 39) which has a longitudinal axis (17) and includes a head (15), a thread, and an end (18) facing away from the head (15), of at least one nut (5) and at least one fastening element (4, 37, 42, 43) arranged between the head (15) of the bolt (23, 35, 39) and a nut (5) and including a hole (8, 38, 44) for the thread (25) of the bolt (23, 35, 39) - or consisting of a threaded rod (3) which has a longitudinal axis (17), a thread (25) and two ends, of at least two nuts (5) and at least one fastening element (4, 37, 42, 43) arranged between said nuts (5) and including a hole (8) for the thread (25) of the threaded rod (3), characterised in that the bolt (23, 35, 39) or the threaded rod (3) is connected to said at least one fastening element (4, 37, 42, 43) by at least one positive engagement connection.

2. The fastening device (1) as claimed in claim 1, characterised in that at least one positive-engagement connection is a slot-and-key connection consisting of a slot (24) and at least one key (27) corresponding to the slot (24), and/or in that the bolt (35) has a collar (12) that may be introduced into the hole (38, 44), said at least one positive-engagement connection being a collar-and-hole connection which consists of the collar (12) and the hole (38, 44) communicating with the shape of the collar (12), and/or in that the bolt (39) has at least one flat (41) and the hole (44) has at least one flat (45), said at least one positive-engagement connection being a flat-and-flat connection which consists of at least one flat (41) and at least one flat (45).

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3. The fastening device (1) as claimed in claim 2, characterised in that at least one key (27) is arranged on a fastening element (4, 37, 42, 43) and the slot (24) is arranged on the bolt (23, 35, 39) or on the threaded rod (3).

4. The fastening device (1) as claimed in claim 2 or claim 3, characterised in that at least one key (27) is arranged at least partially in the hole (8, 38, 44) of a fastening element (4, 37, 42, 43).

5. The fastening device (1) as claimed in any one of claims 2 to 4, characterised in that at least one slot (24) is arranged at least partially parallel with the longitudinal axis (17) of the bolt (23, 35, 39) or at least partially parallel with the longitudinal axis (17) of the threaded rod (3) and/or at least one slot (24) is arranged at least partially perpendicular to the longitudinal axis (17) of the bolt (23) or at least partially perpendicular to the longitudinal axis (17) of the threaded rod (3) and/or at least one slot (24) is arranged at least partially at an angle with respect to the longitudinal axis (17) of the bolt (23) or at least partially at an angle with respect to the longitudinal axis (17) of the threaded rod (3) and/or at least one slot (24) at least partially describes a spatial curve on the bolt (23) or on the threaded rod (3).

6. The fastening device (1) as claimed in any of the preceding claims, characterised in that at least one raised portion (9) is arranged on the side of the head (15) of the bolt (23, 35, 39) facing towards the nut (5) and/or in that at

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least one raised portion (9) is arranged on the side of the fastening element (4, 37, 42, 44) facing towards the component (2).

7. The fastening device (1) as claimed in claim 6, characterised in that the positive-engagement connection is a slot-and-key connection which consists of a slot (24) and at least one key (27) corresponding to said slot (24), at least one raised portion (9) arranged on the fastening element (4, 37, 42, 43) being a constituent part of a key (27) arranged on the fastening element (4, 37, 42, 43).

8. The fastening device (1) as claimed in any of the preceding claims, characterised in that at least one of the fastening elements (4, 37, 42, 43) has at least one nose (10) provided on its side facing toward the component (2).

9. The fastening device (1) as claimed in claim 8, characterised in that the nose (10) of the fastening element (4, 37, 42, 43) may be brought into operative engagement with an opening (7) of the component (2) to be connected and/or with a plurality of openings (7) of the components (2) to be connected, or in that the noses (10) of the fastening element (4, 37, 42, 43) may be brought into operative engagement with at least one opening (7) of the component (2) to be connected and/or with a plurality of openings (7) of the components (2) to be connected.

10. The fastening device (1) as claimed in any of the preceding claims, characterised in that a spring element (34) is arranged between the head (15) of the bolt (23, 35, 39) and a fastening element (4, 37, 42, 43) and/or a spring element (34) is arranged between a nut (5) and a fastening

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element (4, 37, 42, 43) and/or a spring element (34) is arranged between a component (2) and a fastening element (4, 37, 42, 43)

11. The fastening device (1) as claimed in any of the preceding claims, characterised in that the wall of the hole (8, 38, 44) for the thread (25) is smaller than the height of the fastening element (4, 37, 42, 43).

12. The fastening device (1) as claimed in any of the preceding claims, characterised in that the hole (8) of at least one fastening element (4) on which no key (27) corresponding to a slot (24) is arranged is provided with a thread (25), whereby the fastening element (4) assumes the additional function of a nut (5).

13. The fastening device (1) as claimed in any of the preceding claims, characterised in that components (2) to be connected are each provided with at least one opening (7) allowing the fastening device (1) to be attached thereto.

14. The fastening device (1) as claimed in claim 13, characterised in that the opening (7) on at least one of the components (2) to be connected is realised as a round hole or an elongated hole and/or the components (2) to be connected are at least partially provided with differently shaped openings and/or at least one of the components (2) to be connected has differently shaped openings provided thereon.

15. The fastening device (1) as claimed in claim 13 or claim 14, characterised in that

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the openings (7) of the components (2) to be connected are arranged offset from each other and/or are of different lengths.

16. The fastening device (1) as claimed in any of the preceding claims, characterised in that at least one marking (20) is arranged on the end of the bolt (23, 35, 39) facing away from the head (15) or on at least one end of the threaded rod (3), and/or in that at least one marking (26) is arranged on a fastening element (4, 37, 42, 43) having at least one key (27).

17. A method of attaching a fastening device (1) onto at least one component (2), said fastening device (1) consisting of a bolt (23, 35, 39) which has a longitudinal axis (17) and includes a head (15), a thread (25), and an end (18) facing away from the head (15), of at least one nut (5) and at least one fastening element (4, 37, 42, 43) arranged between the head (15) of the bolt (23, 35, 39) and a nut (5) and including a hole (8, 38, 44) for the thread (25) of the bolt (23, 35, 39) or consisting of a threaded rod (3) which has a longitudinal axis (17), a thread (25) and two ends, of at least two nuts (5) and at least one fastening element (4, 37, 42, 43) arranged between said nuts (5) and including a hole (8, 38, 44) for the thread (25) of the threaded rod (3), characterised in that the fastening device (1) is provided at least intermittently with a positive-engagement connection, whereby the fastening element (4, 37, 42, 43) is connected at least intermittently with the bolt (23, 35, 39) or the threaded rod (3) in such a manner that when the bolt (23, 35, 39) or the threaded rod (3) is rotated, the fastening element (4, 37, 42, 43) will at least intermittently be rotated in conjunction therewith, or that when the fastening element (4, 37, 42, 43) is rotated, the bolt (23, 35, 39) or the threaded rod (3) will at least intermittently be rotated in conjunction therewith, and/or

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that when the bolt (23, 35, 39) or the threaded rod (3) is displaced on its longitudinal axis (17), the fastening element (4) will at least intermittently be rotated, or that when the fastening element (4) is displaced along the longitudinal axis (17) of the bolt (23, 35, 39) or of the threaded rod (3), the bolt (23, 35, 39) or the threaded rod (3) will at least intermittently be rotated.

18. The method as claimed in claim 17, characterised in that the positive-engagement connection employed is at least one slot and-key connection which consists of a slot (24) and at least one key (27) corresponding to said slot (24), and/or the positive-engagement connection employed is a collar-and-hole connection which consists of a collar (12) arranged on the bolt (35) and insertable into the hole (38, 44) and of a hole (38, 44) communicating with the shape of the collar (12), and/or the positive-engagement connection employed is a flat-and-flat connection which consists of at least one flat (41) arranged on the bolt (39) and at least one flat (45) arranged on the hole (44).

19. The method as claimed in claim 18, characterised in that when at least one slot-and-key connection is employed, at least one key (27) is arranged on a fastening element (4) and the slot (24) is arranged on the thread (25) of the bolt (23, 35, 39) or on the thread (25) of the threaded rod (3).

20. The method as claimed in any one of claims 17 to 19, characterised in that the fastening device (1) has at least one spring element (34), whereby a rotation and/or a displacement of the bolt (23, 35, 39), the

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threaded rod (3) and/or the fastening element (4, 37, 42, 43) is at least partially influenced by an elastic force.

21. The method as claimed in any one of claims 17 to 20, characterised in that the fastening device (1) employed is a fastening device (1) as claimed in any one of claims 1 to 16.