EP3337357B1 - Fastening device having a positionable carrying element - Google Patents

Description

The present invention relates to a fastening device with at least one position-adjustable support element according to the preamble of claim 1.

Adhesive holding bodies, such as self-adhesive hooks, are well known and are used in a variety of ways for hanging up decorative and functional household items. Once bonded, these simple holding bodies cannot be adjusted in height without loosening the bond. A particular difficulty is the hanging of a picture frame with several suspension points if it is to be aligned exactly horizontally. Attaching multiple images that are to be aligned with respect to a reference height is also a challenge with the known simple holding bodies.

Height-adjustable fastening systems for attachment to a wall are already known from the prior art. So revealed U.S. 6,663,075 B2 a height-adjustable system with a vertical guide channel, the guide channel being flanked by indentations, the shape of which is reminiscent of the battlements of a castle. Horizontally and in opposite directions displaceable engagement elements, which are both arranged on a frame held displaceably in the guide channel, engage from the inside in the teeth. The engagement elements are optionally pressed into the toothing by spring elements. The frame of this device is provided with a suspension means for receiving an object which can be hung thereon. The disadvantage of such a construction, however, is that the frame of this device sags under load and thus causes a tilting movement of the engagement elements. As a result, the engagement elements, which are possibly held by the spring tension, no longer reliably engage in the toothing, and the load moves downwards, following the gravitational force.

the end WO 2012/087163 A1 a height-adjustable holding device with a toothed guide channel is known, in which a support element with a pair of opposing spring arms can be displaced. The spring arms are biased outwards and their outer surfaces engage in the teeth of the guide channel. If the spring arms are pushed inwards, the support element can be moved. The load is introduced via the upper face of the load-bearing element. The disadvantage of such a solution, however, is that an asymmetrical surface load causes a moment to act on the spring arms and the holding device, so that the spring arms can be loaded on one side and then slip out of the toothing. Only the spring force of the spring arms can counteract this. If these springs apply correspondingly high spring forces in order to prevent slipping, it is only possible with increased effort to bend the spring arms inwards in order to move the support element.

the end U.S. 8,356,777 B2 several versions of height-adjustable holding devices are known which use the principle of cable ties with spring tongues or self-locking pawl locks in the direction of the earth's gravitational field. The disadvantage of this is that forces which act on the object against the force of gravity are not absorbed by the holding device and the holding device can thus unintentionally move upwards, for example if a person unintentionally hits the object.

the end CN 101623168A a fastening device is known with a sliding element which can be displaced in a guide channel and on which a carrying element is formed. Spring elements are formed on the sliding element, which in a blocking position can engage with engagement surfaces formed on the guide channel.

WO 92/11333 A1 discloses the use of highly extensible self-adhesive tapes which can be detached from a substrate again without leaving any residue or damage. The adhesive tape comprises a backing having a pressure-sensitive adhesive layer on at least one major surface. This allows the adhesive tape to be firmly bonded to a substrate and then removed after being stretched at an angle of no more than about 35° from the surface of the substrate.

The object of the present invention is to provide a fastening device with the aid of which an object can be hung on a wall and whose Height position can be adjusted repeatedly and then secured against any forces acting on it.

The object is achieved by a fastening device having the features of claim 1. By means of a sliding element with spring arms, displaceability and thus the possibility of adjusting the position of the support element are ensured. The locking element restricts deformation of the spring arms so that the spring arms no longer move can deform sufficiently to slip out of the engaging surfaces on the first guide channel of the sliding member, and thus securely fix the position of the sliding member. In this context, a blocking position is a position of the blocking element in which the spring elements engage with the engagement surfaces of the guide channel and it is impossible to move the sliding element relative to the base body without destroying the device.

Advantageous developments and improvements of the fastening device specified in the independent claim are possible as a result of the measures listed in the dependent claims.

According to the invention it is provided that in a release position of the blocking element the spring elements are disengaged from the engagement surfaces, the blocking element also fixing the spring elements in the release position. As a result, the spring elements are disengaged from the engagement surfaces of the guide channel, so that a largely force-free displacement of the sliding element relative to the base body is made possible. It can thus be avoided that a user inadvertently confuses the locked position with the released position, since the sliding body does not engage in the released position.

According to the invention, it is provided that the two spring elements form a second guide channel, with the blocking element being reversibly displaceable along the second guide channel. The blocking element can be easily moved through a second guide channel and thus be held securely on the sliding element. It is particularly advantageous if the blocking element enables displacement of the sliding element along the first guide channel in a first release position in the second guide channel and the blocking element prevents displacement of the sliding element along the first guide channel in a second blocking position in the second guide channel. A slidable locking element, which is slidable between a release position and a locking position, is a simple and easy-to-use way to release or lock the spring elements. It is particularly advantageous if this displacement is reversible, so that multiple locking or unlocking after locking is possible, for example to enable readjustment.

According to the invention, the locking element is released by moving it from the second locking position into the first release position against the force of gravity. Accidental unlocking can thus be prevented since the gravitational force of an object suspended from the support element forces the locking element into the second locking position.

According to a further advantageous development, it is provided that the second guide channel runs completely within the first guide channel. This achieves a particularly compact and lightweight design. Since the payload is reduced by the dead weight of the holding device in the case of an adhesive fastening device, it is advantageous if the holding device can be made particularly light in order to increase a usable load capacity for the fastening device.

According to an advantageous embodiment, it is provided that the first guide channel is closed at one end, preferably at the lower end in the gravitational direction, by a connecting web. A connecting web can be used to ensure that the sliding element does not slip out of the first guide channel in the base plate and thus fall down.

The embodiment according to the invention has guide grooves and locking elements on the sliding element, which serve to guide and lock the blocking element. The blocking element is thus guided for displacement and can be locked in the respective end positions, i.e. in the first release position and in the second blocking position, in order to prevent accidental displacement of the blocking element.

According to a further advantageous embodiment, it is provided that the sliding element has a support plate with a groove running perpendicularly to the first guide channel, the support element being displaceably mounted in the horizontally running groove. In addition to a height adjustment, this also creates a horizontal adjustment option, for example to be able to finely adjust the distance between the suspension points in a picture frame with several suspension points after the fastening device has been fixed to the wall.

Furthermore, it is advantageously provided that the sliding element has second engagement surfaces at the free ends of the spring elements, which engage with the first engagement surfaces the base plate can come into operative connection. As a result, stable locking and fixing of the sliding element in the base plate can be implemented.

According to a further advantageous embodiment, it is provided that guide strips are formed on the spring elements, with which the sliding element is slidably mounted in the first guide channel of the base. As a result, the risk of the sliding element jamming or getting caught can be reduced, as a result of which a comfortable and easy displacement of the sliding element is possible. In addition, the front walls can act as a safeguard here, in order to reliably prevent the sliding element from falling out of the first guide channel.

Furthermore, it is advantageously provided that pressure surfaces are provided on the base plate for applying an assembly force when gluing the base plate to a surface. In order to enable the fastening device to be securely bonded to a surface, the fastening device must be pressed against the surface with an appropriate pressure. Since the force applied is largely constant depending on the person who wants to glue the fastening device to the wall, the effective pressure can be increased in that the force is applied several times to different contact surfaces. In this way, a better adhesion result and, associated with this, a secure hold of the fastening device on the wall can be achieved.

According to a preferred embodiment, the attachment device comprises adhesive means for attachment to a surface. A double-sided adhesive strip, which can be included in the fastening device either separately or already glued to the rear surface of the base plate, is particularly advantageous. Thus, a simple and easy fixation of the fastening device on the surface is possible. It is particularly advantageous if the adhesive, in particular the double-sided adhesive strip, can be detached from the surface without leaving any residue or damage. Such bonding can be done, for example, with adhesive strips that can withstand strain.

Fig. 1

eine erfindungsgemäße Befestigungsvorrichtung in perspektivischer Ansicht;

Fig. 2

eine Basisplatte der erfindungsgemäßen Befestigungsvorrichtung in perspektivischer Ansicht;

Fig. 3

die Basisplatte aus Fig. 2 in der Vorderansicht;

Fig. 4

die Basisplatte aus Fig. 2 in der Rückansicht;

Fig. 5

ein Gleitelement einer erfindungsgemäßen Befestigungsvorrichtung in perspektivischer Ansicht;

Fig. 6

das Gleitelement aus Fig. 5 in einer Seitenansicht;

Fig. 7

das Gleitelement aus Fig. 5 in der Vorderansicht;

Fig. 8

das Gleitelement aus Fig. 5 in der Rückansicht;

Fig. 9

ein Sperrelement einer erfindungsgemäßen Befestigungsvorrichtung in perspektivischer Ansicht auf die Vorderfläche;

Fig. 10

das Sperrelement aus Fig. 9 in einer Seitenansicht;

Fig. 11

das Sperrelement aus Fig. 9 in der Draufsicht;

Fig. 12

das Sperrelement aus Fig. 9 in einer weiteren perspektivischen Ansicht auf die Rückfläche;

Fig. 13

das Gleitelement mit dem eingesetzten Sperrelement in der Vorderansicht;

Fig. 14

das Gleitelement mit dem eingesetzten Sperrelement in der Rückansicht;

Fig. 15

eine Haltevorrichtung der erfindungsgemäßen Befestigungsvorrichtung in der Vorderansicht;

Fig. 16

eine weitere Ausführung einer Haltevorrichtung in perspektivischer Ansicht;

Fig. 17

eine Schnittdarstellung der Haltevorrichtung aus Fig. 13;

Fig. 18

eine weitere Schnittdarstellung der Haltevorrichtung aus Fig. 13;

Fig. 19

eine weitere Ausführungsform einer erfindungsgemäßen Befestigungsvorrichtung mit einer Haltevorrichtung und einem doppelseitig wirksamen Klebestreifen;

Fig. 20

die Haltevorrichtung aus Fig. 19 in gesperrter Position;

Fig. 21

ein Schnittschema zur Veranschaulichung der Führungskanäle;

Fig. 22

ein weiteres Schnittschema zur Veranschaulichung der Führungskanäle;

Fig. 23

ein Schnittschema einer weiteren Ausführung des Gleitelements mit zusätzlich horizontal verstellbarem Tragelement;

Fig. 24

ein weiteres Schnittschema des Gleitelements mit zusätzlich horizontal verstellbarem Tragelement; und

Fig. 25

ein schematisches Bild eines weiteren Gleitelements in der Vorderansicht.

The invention is explained below on the basis of preferred embodiments with reference to the accompanying figures. show it

1

a fastening device according to the invention in a perspective view;

2

a base plate of the fastening device according to the invention in a perspective view;

3

the base plate 2 in front view;

4

the base plate 2 in rear view;

figure 5

a sliding element of a fastening device according to the invention in a perspective view;

6

the sliding element figure 5 in a side view;

7

the sliding element figure 5 in front view;

8

the sliding element figure 5 in rear view;

9

a locking element of a fastening device according to the invention in a perspective view of the front surface;

10

the blocking element 9 in a side view;

11

the blocking element 9 in top view;

12

the blocking element 9 in a further perspective view of the rear surface;

13

the sliding element with the locking element used in the front view;

14

the sliding element with the locking element used in the rear view;

15

a holding device of the fastening device according to the invention in the front view;

16

another embodiment of a holding device in a perspective view;

17

a sectional view of the holding device 13 ;

18

Another sectional view of the holding device 13 ;

19

a further embodiment of a fastening device according to the invention with a holding device and a double-sided adhesive strip;

20

the holding device 19 in locked position;

21

a sectional diagram to illustrate the guide channels;

22

another sectional diagram to illustrate the guide channels;

23

a sectional diagram of a further embodiment of the sliding element with an additional horizontally adjustable support element;

24

another sectional diagram of the sliding element with an additional horizontally adjustable support element; and

25

a schematic image of another sliding element in the front view.

In the following it is assumed that a fastening device 100 according to the invention is attached to a vertical wall of a living space. Directional statements, such as up and down, refer to this case. Furthermore, the same components or components with the same function are provided with the same reference symbols in the following description of the figures.

In 1 a fastening device 100 according to the invention is shown, which comprises a base plate 1 , a sliding element 2 and a locking element 3 . In addition, the fastening device 100 according to the invention can comprise fastening means 4, in particular a double-sided adhesive strip 45, for attaching the fastening device 100 to a wall. A holding device 10 has at least one base plate 1 and a sliding element 2 that can be displaced relative thereto.

As in Figures 2 to 4 shown, the base plate 1 has a fastening device 100 according to the invention, a base plate 20 with a substantially flat rear surface 11 which, in the assembled state, extends plane-parallel to the wall to which it is to be fastened. The base plate 20 also has a front surface 12 opposite the rear surface 11, from which two parallel side walls 14 extend in the vertical direction parallel to its side edges. The inner surfaces 13 of the side walls 14 run essentially normal to the front surface 12 of the base plate 20. A ventilation opening can be formed on the rear surface 11 of the base plate 1.

The side walls 13 adjoin front walls 15 formed at a right angle thereto, which run at a distance parallel to the front surface 12 of the base plate 20 . The front walls 15 have end surfaces 13 facing one another, which are spaced apart from one another and together with the front surface 12 of the base plate 20 form a first guide channel 61 . The opposite end faces 13 are smooth in sections and designed as first engagement surfaces 16 in sections. The first engagement surfaces 16 can be designed as symmetrical or asymmetrical teeth. The flank tips and the base of the toothing of the engagement surfaces 16 are preferably rounded.

Alternatively or additionally, it is possible to provide the engagement surfaces 16 with a surface which is opposite to that described below Figures 5 to 8 described, formed on the sliding element 2 second engagement surfaces 24 have a static friction coefficient of at least 0.2 measured according to DIN 53375.

The front walls 15 can end in the lower area with a horizontal connecting web 19, which represents a further delimitation of the first guide channel 61 and connects the two front walls 15 to one another in this area. The connecting web 19 can carry application instructions or a brand logo as a source of information.

For improved vertical positioning of the holding device 10 or the base plate 1, lateral positioning notches 17 can be provided on the outer sides of the two side walls 14, which can be aligned with a horizontal reference line.

Analogous to this, on the holding device 10 or on the base plate 1 on a horizontal upper edge and/or a horizontal lower edge, positioning notches 18 that lie centrally opposite each other can be formed for a horizontal position determination. In cooperation with a spirit level or a plumb bob, the opposite positioning notches 18 also support an exact vertical alignment of the base plate 1 or the holding device 10. Alternatively, a spirit level integrated in the base plate 1 or miniaturized electro-mechanical inclination sensors with a wireless display or a display that can be electrically connected by cables can be used simplify assembly.

The front walls 15 together with the front surface 12 of the base plate 20, the insides of the side walls 14, the inside of the front walls 15 and the end faces 13 of the front walls 15 form the first guide channel 61, which runs vertically and has a T-shaped cross section.

In Figures 5 to 8 a sliding element 2 of a fastening device 100 according to the invention is shown. The sliding element 2 comprises a support plate 21 with an upper edge, a flat rear surface 29, a lower edge and a front surface. From the front surface of the support plate 21 rises a support member 26 for attaching items. The support element 26 is preferably formed as an oblique truncated cone with an elliptical or oval base. The support plate 21 is flanked laterally by a pair of first guide rails 22 . The rear surfaces of the two guide rails 22 are coplanar with the rear surface 29 of the support plate 21.

Two web-shaped spring elements 23 extend from a lower end face of the support plate 21 and extend parallel in the vertical direction. A rear surface of the spring elements 23 is arranged coplanar with the rear surface 29 of the support plate 21 . The spring elements 23 each have mutually facing guide grooves 27 on their rear side for guiding the following in the description of the figures Figures 9 to 12 Locking element 3 described in more detail. In the guide grooves 27 of the spring elements 23, locking elements 28 are arranged, which rise from the base of the guide groove 27. The lower area of the spring elements 23 facing away from the support element 26 is flanked by second guide strips 25 . These second guide rails 25 face away from each other and point outwards. The side edges of the second guide rails 25 are collinear with the side edges of the first guide rails 22. The spring elements 23 can Have recesses in order to increase the elasticity of the spring elements 23 and to facilitate compression when the sliding element 2 is displaced.

The two spring elements 23 form a second guide channel 62 , the blocking element 3 being reversibly displaceable along this second guide channel 62 . At the free ends of the spring elements 23 each outwardly acting second engagement surfaces 24 are formed. In the tangential plane of each of the second engagement surfaces 24 there is a straight line which is perpendicular to the rear surface 29 of the support plate 21 . The second engagement surfaces 24 are designed to complement the first engagement surfaces 16 of the base plate 1 for positive, frictional or combined positive and frictional engagement.

In addition to being connected to a lower end face of the support plate 21, each spring element 23 can be connected to the first guide rails 22. This strengthens a connection between the spring elements 23 and the support plate 21 and, with suitably designed web profiles of the spring elements 23 , ensures that the spring elements 23 remain free about an axis that is perpendicular to the rear surface 29 of the support plate 21 . The spring elements 23, in particular the second engagement surfaces 24 formed on the spring elements 23, thus move essentially in a plane parallel to the rear surface 29 of the support plate 21.

As in a further multi-part embodiment of a sliding element 2 in 23 and 24 shown, a guide profile can be formed on the support element 26, 26a, which is laterally displaceable in a horizontal guide rail of the support plate 21, 21a. Thus, not only a vertical adjustment of the position of the support element 26 is possible, but also a horizontal adjustment possibility for the support element 26 is made possible. Interacting locking elements on the guide profile of the support element 26, 26a and on the guide rail of the support plate 21, 21a can define several locking positions of the support element 26a. For example, a middle starting position can be provided, which can then be corrected to the left or to the right if necessary.

This in Figures 9 to 12 Blocking element 3 shown has a cuboid base body 32 with six sides. On the front side of the base body 32, a handle plate 31 is formed, on a handle plate 31 opposite the back is the Base body 32 connected to a back plate 33. The back plate 33 has a flat back surface 34 . A structured surface to increase the grip or a raised lettering can be provided on a front surface of the grip plate 31 . As in the plan view in 10 to recognize the mutually facing surfaces of the handle plate 31 and the back plate 33 carry concave or convex latching elements 35 which are in operative connection with the latching elements 28 in the guide groove 27 of the sliding element 2 .

In 13 and 14 a sliding element 2 with a locking element 3 mounted therein is shown. The blocking element 3 is guided between the spring bars of the sliding element 2 and is shown in a first release position, which allows the second engagement surfaces 24 to move relative to one another. The wall thickness of the rear plate 33 of the locking element 3 corresponds to the height of the guide grooves 27 in the spring elements 23 on the sliding element 2. The rear surface 24 of the locking element 3 lies plane-parallel to the rear surface 29 of the support plate 21 of the sliding element 2. As in 14 shown, the guide grooves 27 extend in the vertical direction parallel to the outer side edges of the guide rails 22, 25 from the rear surface 29 of the support plate 21 to a stop which is formed by the end inwardly drawn second guide rails 25.

15 shows a holding device 10 with a height-adjustable support element 26 therein, which can be guided as part of the sliding element 2 in the base plate 1 and fixed by the locking element 3 . The sliding element 2 can be displaced relative to the base plate 1. The connecting web 19, which connects the front walls 15 to one another in the area of a lower edge of the base plate 1, serves as the lower stop of the first guide channel 61 for the sliding element 2, stiffens the front walls 15 and serves as a labeling area for the fastening device 100.

16 shows an alternative embodiment of a fastening device 100 according to the invention. Compared to the previous embodiments, the base plate 1 is wider, so that the rear surface 11 has a larger adhesive surface. Furthermore, the support element 26 is designed as a threaded bolt. By means of a nut (not shown), an object can thus be fastened to the wall by means of a screw connection, without having to drill a hole in the wall and insert a dowel and a screw.

In 17 and 18 a sectional view is shown, from which the guidance of the approximately H-shaped blocking element 3 between the L-shaped profiled spring elements 23 can be seen. The grip plate 31 of the blocking element 3 is located in front of the spring elements 23 and in front of the front surface of the front wall 15. The guide strips 25 formed on the ends of the spring elements 23 are guided between the front surface 12 of the base plate 20 and the inner surface of the front wall 15. This ensures that the second engagement surfaces 24 connected thereto are guided within the first engagement surfaces 16 . The engagement of the guide rails 25 of the sliding element 2 in the gap between the front walls 15 and the base plate 20 prevents the sliding element 2 from tilting. In addition, the sliding element 2 can be prevented from falling forward out of the first guide channel 61 under load, since the front walls 15 limit the movement of the sliding element 2 in the direction away from the base plate 20 .

19 shows a fastening device 100 which can be fastened to a wall with two double-sided adhesive strips 45 which can be used to relieve strain. The double-sided adhesive strips 45 each have two pressure-sensitive adhesive main surfaces 44 which are opposite one another. These have an area on opposite end sections which is not provided with an adhesive and is designed as a grip 43 . This can be achieved, for example, by covering the adhesive with a film. The surface area of these grips 43 is preferably between 2 cm ² and 4 cm ² in order to provide sufficient gripping surface between the fingertips of a thumb and a forefinger. However, the tab should not occupy more than 40% of the total main surface 44. The two main surfaces 44 of each adhesive strip 45 are usually covered by protective films 41, 42. To attach the holding body 10 to a wall, the first protective film 41 on the wall is first removed from each adhesive strip 45 and the two adhesive strips 45 are glued to the wall within an area which corresponds to the rear surface 11 of the base plate 1 . After the second protective film 42 has been pulled off, the holding device 10 is pressed onto the adhesive strip 45 . The positioning notches 17, 57 on the opposite outer edges of the holding device 10 can be used to align them with a reference line or with a spirit level. In particular when gluing on rough substrates such as woodchip wallpaper or plastered walls, it is desirable in view of a maximized holding power if the holding device 10 is pressed several times at different positions of the front walls 15, 55 with a fingertip of the human hand. As a result, the surface wetted by the adhesive surfaces is between the main surfaces 44 of the adhesive strip 45 and a background increased. In order to support the pressing on, the front walls 15, 55 are divided into four pressing surfaces 53, 54, 58, 60 by raised reinforcing ribs.

After attachment of the holding body 10, it is possible to subsequently adjust the height of the support element 26. For this purpose, the blocking element 3 guided in the sliding element 2 is pushed up against the force of gravity and engages there in the first release position. Now the sliding element 2 can be moved in the vertical guide channel of the base plate 51. The second engagement surfaces 24 formed on the ends of the spring elements 23 of the sliding element 2 periodically move inwards and slide over the tooth flanks of the first engagement surfaces 16, 56. Once the desired height position of the support element 26 has been found, the blocking element 3 moves downwards in the direction of gravity placed in the second locking position, as in 20 pictured. The locking element 3 is also held in this position by gravity or gravitational force. In addition, the latching elements 28 on the spring elements 23 of the sliding element 2 and on the locking element 3 can engage in the second locking position. There, the blocking element 3 prevents the spring elements 23 from deflecting inwards, so that the second engagement surfaces 24 on the sliding element 2 are in engagement with the first engagement surfaces 16, 56 on the base plate 1, 51.

In this sense, the holding body 10 can also be mounted on sloping walls, as long as a sufficient weight force is still acting on the blocking element 3 in the direction of the second guide channel 62 . On a wall which is inclined by 45° to the vertical, the effort required in a parallel second guide channel 62 would be reduced by about 29% in order to move the blocking element 3 out of the blocking position along this guide channel.

The engagement of the second engagement surfaces 24 of the sliding element 2 in the first engagement surfaces 16, 56 of the base plate 1, 51 can be increased by an additional clamping effect. It is thus possible to design the spring elements 23 of the sliding element 2 in a V-shape, so that the inner surfaces of the spring elements 23 approach one another in the direction of the free end of the spring elements 23 and thus a downward displacement of the blocking element 3 causes the second engagement surfaces 24 in the first engagement surfaces 16, 56 urges. The width of the in 11 shown blocking element 3 on the base body 32 to choose larger than the maximum distance between the facing inner surfaces of the spring elements 23. Alternatively, the first engagement surfaces 16, 56 or the second engagement surfaces 24 can be designed to be elastically compressible.

The displacement of the locking member 3 and the displacement of the slide member 2 are performed by a force exerted by a human hand. One goal is that the force vectors that are effective in this case do not lead to additional normal tensile stresses in the adhesive bond of the holding device 10, since this can weaken the adhesive bond due to a peeling load. Specifically, locking or unlocking of the sliding element 2 by a tensile force would be particularly disadvantageous. A torsional force that would occur when using an eccentric locking element 3 is also unfavorable. Thus, all displaceable elements are constructed in such a way that they can only be displaced and moved in planes that are parallel to the rear wall 11 of the holding device 10, ie parallel to the bonding surface, and that no torsional forces act during a displacement. When moving the moving parts, ie the sliding element 2 and/or the blocking element 3, a translatory movement is carried out by the hand of a user, which also runs parallel to the bonding surface.

To move the blocking element 3 or the sliding element 2, only force vectors are therefore required which load the bond normal to the bond surface without critical pressure or run parallel to the bond surface without pronounced stress peaks.

As in 21 and 22 shown, the second guide channel 62 for the blocking element 3 lies within the first guide channel 61 for the sliding element 2. A space-saving design with a low overall height is thus possible.

In 25 a further sliding element 2 of a fastening device 100 according to the invention is shown. The two spring elements 23 form a second guide channel 62 which tapers conically in the direction of the free ends of the sliding element 2 in the unloaded state, ie in the release position. By moving the blocking element 3 in the direction of the free ends of the spring elements 23, the spring elements 23 are each deformed in the outward direction, so that the spring elements 23 are aligned largely parallel, at least in the lower end position of the blocking element 3, i.e. in the blocking position.

A material of manufacture for the holding body of a fastener 100 according to the present invention must be selected taking into account a variety of factors and the location of use. In particular, the material of manufacture should be compatible with the adhesive composition of the adhesive used for assembly, in particular the double-sided adhesive strip 45, and adhere reliably to it. In humid environments, the water absorbency and water resistance of the material can be a limiting factor. The material used should also withstand other environmental influences, such as UV radiation or ozone and exhaust gas pollution, for a reasonable period of time without its material properties deteriorating significantly.

A material that works well with adhesive strips based on styrene compositions with industry-standard adhesive resins and other additives is polystyrene. The disadvantageous tendency to stress cracking can be reduced by using special grades such as High Impact Polystyrene (HIPS), such as Polystyrene 432B. Alternatively, (glass) fiber-reinforced polystyrene types can be used, with both syndiotactic polystyrene and normal polystyrene being able to be used. The (glass) fiber content is preferably between 10% and 50%, particularly preferably between 20% and 40%, filler content, such as in the syndiotactic type ^Schulatec® PS-S-GF 40. DIN EN specifies the filler content of reinforcing fibers taken from ISO 11667. Styrene-acrylonitrile (SAN), acrylester-styrene-acrylonitrile (ASA), acrylonitrile-butadiene-styrene (ABS) and (glass) fiber-reinforced acrylonitrile-butadiene-styrene are also suitable as manufacturing materials. Alternatively, carbon-fiber-reinforced plastics, in particular carbon-fiber-reinforced epoxy resins or carbon-fiber-reinforced polyetheretherketones (PEEK), can also be used. In addition, crystalline or amorphous metals, steel, aluminum or titanium alloys, which can be used as manufacturing material for the components 1, 2, 3 of the holding body 10, are suitable for special applications.

• eine Basisplatte (1) mit einer weitestgehend ebenen Rückfläche (11) und einer der Rückfläche (11) gegenüberliegenden Vorderfläche (12), wobei
• an der Vorderfläche (12) ein erster Führungskanal (61) ausgebildet ist, wobei der Führungskanal (61) durch Seitenwände (14) begrenzt wird, wobei an zumindest einer der Seitenwände (14) zumindest abschnittsweise Eingriffsflächen (16) ausgebildet sind, wobei
• in dem Führungskanal (61) ein Gleitelement (2) angeordnet ist, welches entlang des Führungskanals (61) verschiebbar ist, wobei
• das Tragelement (26) an dem Gleitelement (2) angeordnet ist, und wobei
• an dem Gleitelement (2) zwei Federelemente (23) ausgebildet sind, welche in einer Blockierstellung in Eingriff mit den Eingriffsflächen (16) des Führungskanals (61) treten können,
• an dem Gleitelement (2) ein bewegbares Sperrelement (3) vorgesehen ist, welches die Federelemente (23) wenigstens in der Blockierstellung fixiert,

wobei die zwei Federelemente (23) einen zweiten Führungskanal (62) ausbilden, wobei das Sperrelement (3) entlang des zweiten Führungskanals (62) reversibel verschiebbar ist, wobei das Sperrelement (3) in einer ersten Freigabeposition im zweiten Führungskanal (62) eine Verschiebung des Gleitelements (2) entlang des ersten Führungskanals (61) ermöglicht und das Sperrelement (3) in einer zweiten Sperrposition im zweiten Führungskanal (62) eine Verschiebung des Gleitelements (2) entlang des ersten Führungskanals (61) unterbindet, und wobei eine Verschiebung des Sperrelements (3) von der zweiten Sperrposition in die erste Freigabeposition entgegen der Gravitationskraft erfolgt und das Sperrelement (3) in der zweiten Sperrposition durch die Gravitationskraft gehalten wird, wobei die Befestigungsvorrichtung (100) dadurch gekennzeichnet ist, dass an dem Gleitelement (2) Führungsnuten (27) und Rastelemente (28) für das Sperrelement (3) vorgesehen sind und in einer Lösestellung des Sperrelements (3) die Federelemente (23) außer Eingriff mit den Eingriffsflächen (16) stehen, wobei das Sperrelement (3) die Federelemente (23) auch in der Lösestellung fixiert.According to a first embodiment, the invention relates to a fastening device (100) with at least one position-adjustable support element (26), comprising:

• a base plate (1) with a largely planar rear surface (11) and a rear surface (11) opposite front surface (12), wherein
• a first guide channel (61) is formed on the front surface (12), the guide channel (61) being delimited by side walls (14), engagement surfaces (16) being formed at least in sections on at least one of the side walls (14), wherein
• in the guide channel (61) a sliding element (2) is arranged, which is displaceable along the guide channel (61), wherein
• the support element (26) is arranged on the sliding element (2), and wherein
• two spring elements (23) are formed on the sliding element (2), which in a blocking position can engage with the engagement surfaces (16) of the guide channel (61),
• a movable locking element (3) is provided on the sliding element (2), which fixes the spring elements (23) at least in the blocking position,

the two spring elements (23) forming a second guide channel (62), the blocking element (3) being reversibly displaceable along the second guide channel (62), the blocking element (3) being displaced in a first release position in the second guide channel (62). of the sliding element (2) along the first guide channel (61) and the blocking element (3) in a second blocking position in the second guide channel (62) prevents a displacement of the sliding element (2) along the first guide channel (61), and wherein a displacement of the The blocking element (3) moves from the second blocking position into the first release position against the force of gravity and the blocking element (3) is held in the second blocking position by the force of gravity, the fastening device (100) being characterized in that the sliding element (2) has guide grooves (27) and latching elements (28) are provided for the blocking element (3) and in a release position of the blocking element (3) the spring elements (23) are disengaged from the engagement surfaces (16), the blocking element (3) also fixing the spring elements (23) in the release position.

According to a second embodiment, the invention relates to a fastening device (100) according to the first embodiment, characterized in that the second guide channel (62) runs completely inside the first guide channel (61).

According to a third embodiment, the invention relates to a fastening device (100) according to the first or second embodiment, characterized in that the first guide channel (61) is inclined by a maximum of 45° to the gravitational direction and preferably runs parallel to the gravitational direction.

According to a fourth embodiment, the invention relates to a fastening device (100) according to the first to third embodiments, characterized in that the engagement surfaces (16) are formed on both sides in the side walls (14) of the first guide channel (61).

According to a fifth embodiment, the invention relates to a fastening device (100) according to the first to fourth embodiments, characterized in that the first guide channel (61) is closed or can be closed at one end, preferably at the lower end in the direction of gravity, by a connecting web (19). is.

According to a sixth embodiment, the invention relates to a fastening device (100) according to the first to fifth embodiments, characterized in that the sliding element (2) has a support plate (21) with a horizontal groove running perpendicular to the first guide channel (61), the support element (26) is slidably mounted in the horizontal groove.

According to a seventh embodiment, the invention relates to a fastening device (100) according to the first to sixth embodiment, characterized in that the sliding element (2) has second engagement surfaces (24) on the free ends of the spring elements (23), which engage with the first engagement surfaces ( 16) come into operative connection, in particular engage in the first engagement surfaces (16), can.

According to an eighth embodiment, the invention relates to a fastening device (100) according to the first to seventh embodiment, characterized in that guide strips (22, 25) are formed on the spring elements (23), with which the sliding element (2) can be fixed in the base plate (1st ) is slidably guided.

According to a ninth embodiment, the invention relates to a fastening device (100) according to the eighth embodiment, characterized in that the guide strips (22, 25) are arranged between a base plate (20), the base plate (1) and the front walls (15) of the base plate (1 ) are led.

According to a tenth embodiment, the invention relates to a fastening device (100) according to the first to ninth embodiment, characterized in that pressure surfaces (53, 54, 58, 60) for applying an assembly force when gluing the base plate (1) are provided on the base plate (1). are provided on a surface.

According to an eleventh embodiment, the invention relates to a fastening device (100) according to the first to tenth embodiment, characterized in that the fastening device (100) has fastening means (4), in particular a double-sided adhesive strip (45), for fixing to a surface, in particular a vertical wall, includes.

According to a twelfth embodiment, the invention relates to a fastening device (100) according to the eleventh embodiment, characterized in that the fastening means (4), in particular the double-sided adhesive strip (45), can be detached from the surface without leaving any residue or damage.

According to a thirteenth embodiment, the invention relates to a fastening device (100) according to one of the above embodiments, characterized in that the second guide channel (62) tapers conically in the release position towards the free ends of the spring elements (23).

Reference list:

1

base plate

2

sliding element

3

blocking element

4

fasteners

11

back surface

12

front face

14

Side wall

15

front wall

16

first engagement surface

19

connecting bar

20

base plate

21

support plate

22

guide bar

23

spring element

24

second engagement surface

25

guide bar

26

supporting element

27

guide groove

28

locking element

45

adhesive strips

53

pressure surface

54

pressure surface

58

pressure surface

60

pressure surface

61

first guide channel

62

second guide channel

100

fastening device

Claims (13)

1. Fastening device (100) having at least one positionable carrying element (26), comprising:

   - a base plate (1) with a largely flat rear surface (11) and a front surface (12) which is opposite to the rear surface (11), wherein

   - a first guide channel (61) is formed on the front surface (12), wherein the guide channel (61) is delimited by side walls (14), wherein engagement surfaces (16) are formed at least in certain portions on at least one of the side walls (14), wherein

   - a sliding element (2), which can be displaced along the guide channel (61), is arranged in the guide channel (61), wherein

   - the carrying element (26) is arranged on the sliding element (2), and wherein

   - two spring elements (23), which in a locking position can enter into engagement with the engagement surfaces (16) of the guide channel (61), are formed on the sliding element (2),

   - a movable locking element (3), which fixes the spring elements (23) at least in the locking position, is provided on the sliding element (2),

   wherein the two spring elements (23) form a second guide channel (62), wherein the locking element (3) can be reversibly displaced along the second guide channel (62), wherein the locking element (3) in a first release position in the second guide channel (62) enables a displacement of the sliding element (2) along the first guide channel (61) and the locking element (3) in a second locking position in the second guide channel (62) prevents a displacement of the sliding element (2) along the first guide channel (61), and wherein a displacement of the locking element (3) from the second locking position into the first release position is effected counter to the gravitational force and the locking element (3) is held in the second locking position by the gravitational force,
   characterized in that
   guide grooves (27) and latching elements (28) for the locking element (3) are provided on the sliding element (2) and, with the locking element (3) in a detached position, the spring elements (23) are not in engagement with the engagement surfaces (16), wherein the locking element (3) also fixes the spring elements (23) in the detached position.
2. Fastening device (100) according to Claim 1, characterized in that the second guide channel (62) runs completely inside the first guide channel (61).
3. Fastening device (100) according to Claim 1 or 2, characterized in that the first guide channel (61) is inclined at most by 45° in relation to the direction of gravity and preferably runs parallel to the direction of gravity.
4. Fastening device (100) according to one of Claims 1 to 3, characterized in that the engagement surfaces (16) are formed on either side in the side walls (14) of the first guide channel (61).
5. Fastening device (100) according to one of Claims 1 to 4, characterized in that the first guide channel (61) is closed or can be closed at one end, preferably at the lower end in the direction of gravity, by a connecting web (19).
6. Fastening device (100) according to one of Claims 1 to 5, characterized in that the sliding element (2) comprises a carrying plate (21) with a horizontal groove which runs perpendicular to the first guide channel (61), wherein the carrying element (26) is displaceably mounted in the horizontal groove.
7. Fastening device (100) according to one of Claims 1 to 6, characterized in that, on the free ends of the spring elements (23), the sliding element (2) comprises second engagement surfaces (24) which can enter into an operative connection with the first engagement surfaces (16), in particular can latch in the first engagement surfaces (16).
8. Fastening device (100) according to one of Claims 1 to 7, characterized in that guide strips (22, 25), by way of which the sliding element (2) is displaceably guided in the base plate (1), are formed on the spring elements (23).
9. Fastening device (100) according to Claim 8, characterized in that the guide strips (22, 25) are guided between a bottom plate (20), the base plate (1) and the front walls (15) of the base plate (1).
10. Fastening device (100) according to one of Claims 1 to 9, characterized in that pressing surfaces (53, 54, 58, 60) for applying a mounting force when the base plate (1) is being adhesively bonded to a surface are provided on the base plate (1).
11. Fastening device (100) according to one of Claims 1 to 10, characterized in that the fastening device (100) comprises fastening means (4), in particular an adhesive strip (45) which is effective on two sides, for fixing to a surface, in particular to a vertical wall.
12. Fastening device (100) according to Claim 11, characterized in that the fastening means (4), in particular the adhesive strip (45) which is effective on two sides, can be detached from the surface without any residue or damage.
13. Fastening device (100) according to one of the preceding claims, characterized in that, in the detached position, the second guide channel (62) tapers conically in the direction of the free ends of the spring elements (23).

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