DE202022100628U1 - Installation kit for a frame with height adjustment and locking device - Google Patents

Abstract

Installation kit for frames, comprehensive
at least two retaining elements (1), wherein the retaining elements (1) are not connected to one another, and wherein the retaining elements (1) can each be fastened to a reveal of a wall recess of a wall body, preferably by means of a detachable connection,
at least two guide elements (10) for attachment to a frame,
at least one height adjustment device (20) for attachment to a frame, the height adjustment device comprising a fixing element (21) and an adjustment element (22) and the two elements (21, 22) being detachably connected to one another; and
at least two locking devices (30), the locking devices being designed to releasably connect a frame to the holding elements (1), the locking device (30) preferably being designed in two parts.

Description

The present invention relates to an installation kit for a frame, a device for enclosing a wall recess of a wall body and a height adjustment device for attachment to a frame.

With common installation methods, frames are reinforced with struts in the door holes provided for this purpose and are then permanently fastened with assembly foam. With conventional assembly, a frame must be adapted to the floor, stiffened in width and then permanently fixed in several places with assembly foam. It is therefore not possible to continue the work because the assembly foam should dry out within a day if possible. The mounting foam must then be removed flush with the wall, and the lower area of the frame must be sealed to prevent moisture absorption. The door must then be adapted to the floor by sawing or planing.

In addition to these disadvantages of known solutions, the installation takes a lot of time, since various activities are necessary in order to adapt the door to the respective circumstances. In addition, dirt is created when frames are changed, since work is required to remove the frames from the wall. This work and the resulting hours can be shortened by using special substructures.

Installation kits for frames and devices for enclosing a wall recess and height adjustment devices are known from the prior art.

the DE 20 2006 002 063 U1 discloses an auxiliary frame of sheet metal for mounting between a door frame and an opening in a wall. On an inner reveal side, the additional frame has at least two fastening devices for a door frame, which are arranged offset in height relative to one another. An additional metal frame is disclosed in which an inner metal frame is adjustably secured.

the DE 10 2004 063 729 A1 reveals a height-adjustable frame that has a "double panel" on each of the two long sides. the DE 10 2004 063 729 A1 shows a height-adjustable attachment of the frame with the help of two lateral guide rails, which are installed in the door hole together with the door frame.

The disadvantage of known solutions is that installing the frame with the simultaneous possibility of height adjustment and corresponding determination of the height is expensive and time-consuming and/or modifications to the frame have to be made. Changing frames is also often difficult.

There is therefore a need for an installation kit for accommodating a frame, a device for enclosing a wall recess and a height adjustment device with which the disadvantages mentioned above can be overcome.

It is therefore the object of the present invention to provide the corresponding devices.

• - wenigstens zwei Halteelemente, wobei die Haltelemente nicht miteinander verbunden sind, wobei die Halteelemente an jeweils einer Laibung einer Wandausnehmung eines Wandkörpers befestigbar sind, bevorzugt mittels lösbarer Verbindung,
• - wenigstens zwei Führungselemente, zur Anbringung an einer Zarge,
• - wenigstens eine Höhenverstellungsvorrichtung zur Anbringung an einer Zarge, wobei die Höhenverstellungsvorrichtung ein Fixierelement und ein Verstellelement umfasst und wobei die beiden Elemente lösbar miteinander verbunden sind; und
• - wenigstens zwei Feststellvorrichtungen, wobei die Feststellvorrichtungen ausgestaltet sind, um eine Zarge mit den Halteelementen lösbar zu verbinden, wobei die Feststellvorrichtung bevorzugt zweiteilig ausgestaltet ist.

The present invention relates to an installation kit for frames, comprising

• - at least two holding elements, whereby the holding elements are not connected to each other, whereby the holding elements can each be fastened to a reveal of a wall recess of a wall body, preferably by means of a detachable connection,
• - at least two guide elements for attachment to a frame,
• - At least one height adjustment device for attachment to a frame, wherein the height adjustment device comprises a fixing element and an adjustment element and the two elements are detachably connected to one another; and
• - At least two locking devices, wherein the locking devices are designed to releasably connect a frame with the holding elements, wherein the locking device is preferably designed in two parts.

The installation kit according to the invention allows frames to be accommodated in a reversible manner. The two retaining elements with the recesses can be installed separately on opposite reveals and then allow a frame to be accommodated.

The installation kit is also suitable for accommodating other elements to be let in, and the invention is not limited to accommodating frames, in particular door frames.

Another advantage of the installation kit is that if an apartment or house owner wants to change a frame with a door, this can be done in a short amount of time, without special knowledge and without dirt, because the old frame can be pulled out and the new frame just pushed in must become.

The installation kit according to the invention enables a new installation technique that can also be used in future frames with a door leaf. The enormous amount of work that arises, for example, when removing the adhesive construction foam, which is associated with considerable dust and dirt development, is no longer necessary. All you have to do is loosen the connection between the retaining element and the embedded element, pull out the old element and slide in the new element and fasten it. These previously enormously complex work steps can now be completed within a few minutes.

The installation is therefore cheaper and easier and can therefore be carried out not only by the specialist but also by the layman.

A further advantage is that the installation kit is suitable for accommodating DIN standardized frames, so that any DIN-manufactured frames and/or doors can be accommodated. The frames and/or doors used for this purpose, manufactured according to DIN, can be used without modification or adjustment.

The installation kit can also be used if the frame or door leaf is old or damaged and new frames and door elements manufactured according to DIN are to be installed as replacements. The elements, especially frames, can be exchanged in just a few simple steps. This allows frames and/or doors to be changed easily without changing the installation kit, for example for renovation measures. The old frames are pulled out of the installation kit and the new or renovated frame is inserted. This means further time and cost savings.

Since the height adjustment device and the guide elements can be attached directly to the frame, for example before the frame is installed, any frame can be used without special pretreatment. This expands the possible uses of the installation kit according to the invention enormously.

After the height of a frame has been set, it can be easily and inexpensively fixed at the desired height using the locking devices. The invention is unrivaled in ease of installation and durability. Due to the reduced use of building foam, for example, it is also beneficial for health and environmental protection.

In an advantageous embodiment, the at least two holding elements are configured as mirror images of one another. The installation kit preferably includes exactly two holding elements which are configured as mirror images of one another.

In a further advantageous embodiment, the at least two holding elements each have a fold at the upper end, also referred to as an upper fold in the transverse direction. This fold is preferably arranged in a door jamb at the upper end of the holding element after the holding element has been attached. As a result, the adjustment element, which is attached to the frame as part of the height adjustment device, can contact the fold and change the height of the frame by rotating the adjustment element.

The top fold in the transverse direction preferably has a width of 1.0 cm or less, more preferably 0.8 cm or less, even more preferably 0.7 cm or less, even more preferably 0.6 cm or less, and most preferably 0.5 cm or less fewer.

In an advantageous embodiment, the upper fold in the transverse direction of a holding element makes contact with the lateral surface of the adjustment element of the height adjustment device.

In one embodiment, the holding elements are bent on one long side. The bend, also referred to as a fold in the longitudinal direction, preferably has an angle of 60°-120°, preferably 75°-105°, more preferably 80°-100°, even more preferably 85°-95°.

The curved part, i.e. the part folded in the longitudinal direction, has a width of less than 5 cm, preferably less than 4 cm, more preferably less than 3 cm, even more preferably less than 2 cm and most preferably less than 1 cm.

In an advantageous embodiment, each holding element has at least two, preferably three, recesses for accommodating strap pockets.

Each holding element also advantageously has recesses for receiving the locking element. Each holding element preferably has at least two, preferably three, of these recesses.

In a preferred embodiment, the holding elements are detachably connected to the wall by means of fastening means. The holding elements are preferably connected to the wall by means of screws and/or nails.

The holding elements have recesses for receiving fastening means.

The holding elements advantageously have a height of 3.0 m or less, preferably 2.5 m or less, more preferably 2.0 m or less and even more preferably 1.65 m or less.

The holding elements preferably have a height of at least 0.5 m, preferably at least 1.0 m, more preferably at least 1.25 m and even more preferably at least 1.5 m.

In a preferred embodiment, the holding elements are made of wood, plastic, ceramic and/or metal, preferably metal, more preferably steel.

The holding elements preferably have a thickness of less than 1.0 cm, preferably less than 0.8 cm, more preferably less than 0.6 cm, still more preferably less than 0.5 cm and most preferably less than 0.4 cm.

After installation of the retaining element, the distance between the wall and the retaining element is preferably less than 5 cm, preferably less than 4 cm, more preferably less than 3 cm, even more preferably less than 2 cm and most preferably less than 1.5 cm.

The holding elements preferably each have a width of at least 5 cm, preferably at least 7 cm, more preferably at least 8 cm and even more preferably at least 9 cm.

The holding elements preferably have a width of at most 50 cm, preferably at most 40 cm, more preferably at most 30 cm and even more preferably at most 20 cm.

In an advantageous embodiment, the installation kit includes at least two height adjustment devices. A height adjustment device is preferably attached to each longitudinal side of a frame. As a result, a height adjustment device can interact with a holding element in each case in order to adjust the height.

The at least one height adjustment device is arranged at the upper end of a holding element and interacts with the holding element in that the holding element contacts the height adjustment device, specifically the adjustment element, on the lateral surface of the base body.

Such a height adjustment device, comprising a fixing element and an adjustment element, allows the height adjustment of an element embedded in the installation kit, such as a frame, in particular a door frame.

In an advantageous embodiment, the adjusting element has a shape, preferably a round shape, more preferably a round mandrel, and the fixing element has a recess for receiving a shape, preferably a round shape, more preferably a round mandrel. As a result, the adjusting element can be rotatably connected to the fixing element.

The shape, preferably the round shape, more preferably the round mandrel, is suitable for positively engaging in the recess provided in the fixing element. However, this detachable connection still allows the adjustment element to rotate about the axis, also referred to as the axis of rotation, of the formation.

In a preferred embodiment, the fixing element has a sliding projection and the adjusting element has a receptacle for guiding the sliding projection of the fixing element, the sliding projection and the receptacle for guiding the sliding projection preferably being designed as tongue and groove.

This configuration makes it possible for the fixing element to be attached to a frame and for the adjustment element, which is detachably connected to the fixing element, to be secured against falling out. This is particularly relevant during assembly, since here the height adjustment device(s) are attached to the frame before they are inserted into the door recess. When the sliding projection engages in the corresponding recess, this prevents the adjusting element from falling out. As soon as the frame has been inserted into the door recess, the adjustment element can continue to be rotated in order to adjust the height.

The adjusting element preferably has a base body with a partial elliptical, elliptical, trapezoidal, rhombus, oval, rectangular or square shape, preferably with a partial elliptical shape.

The fixing element is preferably designed to be attachable to a frame.

The fixing element of the height adjustment device is preferably glued, nailed and/or screwed, more preferably nailed or screwed, to the frame.

The fixing element preferably has at least two, preferably four, recesses for receiving screws and/or nails.

The fixing element is preferably rounded on one side.

In a preferred embodiment, the adjusting element has a bore for receiving an object. The object has an elongate shape, more preferably a stick shape. The object is made of plastic, wood, ceramics and/or metal, preferably metal. The adjusting element can be rotated by means of this object, preferably a pin. Here, the object, preferably a pin, acts as a lever. After the rotation, the object can preferably be removed again.

The fixing element and the adjusting element are preferably made of plastic or metal, preferably plastic.

In an advantageous embodiment, each guide element has an insertion track and a vertical movement track. The locking device can be inserted through the slide-in track. The locking device can be guided vertically in the height movement track.

The guide element is preferably glued, nailed and/or screwed, more preferably nailed or screwed, to the frame.

The guide element preferably has at least two, preferably at least four, recesses for receiving screws and/or nails.

The guide element is preferably made of plastic or metal, preferably plastic.

In an advantageous embodiment, the locking device comprises a threaded plate and a clamping washer. The clamping disc has a recess for receiving the thread. The locking disk can be tightened through the recess, which has a counter-thread. This connects the frame to the retaining element and determines the height of the frame.

In one embodiment, the clamping disk has at least one bore in its outer surface for receiving an object. The object has an elongate shape, preferably a stick shape. The object, preferably a pen, is made of plastic, wood, ceramic and/or metal, preferably metal.

• - eine Zarge,
• - wenigstens zwei Halteelemente, die in einer Laibung der Wandausnehmung am Wandkörper befestigbar sind, bevorzugt mittels lösbarer Verbindung, und wobei die Haltelemente nicht miteinander verbunden sind;
• - wenigstens zwei Führungselemente, die an der Zarge angebracht sind;
• - wenigstens eine Höhenverstellungsvorrichtung, die an der Zarge angebracht ist, wobei die Höhenverstellungsvorrichtung ein Fixierelement und ein Verstellelement umfasst und wobei die beiden Elemente lösbar miteinander verbunden sind; und
• - wenigstens zwei Feststellvorrichtungen, wobei die Feststellvorrichtungen ausgestaltet sind, um die Zarge mit den Halteelementen lösbar zu verbinden, bevorzugt ist die Feststellvorrichtung zweiteilig ausgestaltet.

In a further aspect, the invention relates to a device for enclosing a wall recess of a wall body, comprising

• - a frame,
• - At least two holding elements which can be fastened in a reveal of the wall recess on the wall body, preferably by means of a detachable connection, and the holding elements are not connected to one another;
• - At least two guide elements, which are attached to the frame;
• - At least one height adjustment device, which is attached to the frame, wherein the height adjustment device comprises a fixing element and an adjustment element and wherein the two elements are releasably connected to each other; and
• - At least two locking devices, the locking devices being designed to releasably connect the frame to the holding elements, the locking device is preferably designed in two parts.

All previous explanations and technical developments in relation to the installation kit also apply to the device for enclosing a wall recess of a wall body.

In an advantageous embodiment, the frame is adjustable in height. The frame can preferably be adjusted in height by at least 1.0 cm, more preferably by at least 1.5 cm, even more preferably by at least 2.0 cm and most preferably by at least 2.5 cm.

In a further embodiment, the frame can be locked at the desired height. The height adjustment is achieved by a detachable connection between the height adjustment device and the holding element.

The frame is preferably a frame manufactured according to DIN.

In a preferred embodiment, the height adjustment device is arranged at the upper end of the at least one holding element.

The frame preferably has at least one recess for accommodating the at least one height adjustment device. A frame manufactured according to DIN preferably has the recess.

In an advantageous embodiment, the device for enclosing a wall recess comprises at least one shoe, preferably at least two shoes.

The frame is preferably releasably attached to the holding elements with at least two locking devices, preferably at least four locking devices.

In an advantageous embodiment, the device comprises at least two holding elements according to the invention as described above.

In a further aspect, the invention relates to a height adjustment device for attachment to a frame, comprising a fixing element and an adjustment element, and with the two elements being detachably connected to one another.

All previous statements and technical configurations relating to the installation kit also apply to the height adjustment device, if applicable.

The fixing element preferably has a sliding projection and the adjustment element has a receptacle for guiding the sliding projection of the fixing element, the sliding projection and the receptacle for guiding the sliding projection preferably being designed as tongue and groove.

The adjustment element preferably has a shape, preferably a round shape, more preferably a round mandrel, and the fixing element has a recess for receiving the shape, preferably the round shape, more preferably the round mandrel.

• 1a und 1b Schematische Gesamtansicht eines Halteelements, 1a, und schematische Ansicht der Abkantung, 1b, eines Halteelements;
• 2 Führungselement;
• 3a und 3b Fixierelement, 3a, und Verstellelement, 3b, einer Höhenverstellungsvorrichtung;
• 4a bis 4c Schematische Ansichten Gewindeplatte mit Gewinde, 4a und 4b, und Klemmscheibe, 4c, einer Feststellvorrichtung;
• 5a und 5b Schematische Ansicht Führungselement und Gewindeplatte, 5a, und schematische Ansicht festgestellte Feststellvorrichtung nach Zusammenfügen mit Führungselement (nicht gezeigt) und Haltelement und angezogener Klemmscheibe zum Feststellen, 5b;
• 6 Schematische Ansicht auf Halteelement und Höhenverstellungsvorrichtung, mit Abstützung Verstellelement über Mantelfläche auf Abkantung des Halteelements.

The above refinements, embodiments and developments can be combined with one another as desired, insofar as this makes sense. Further possible refinements, developments and implementations of the invention also include combinations of features of the invention described above or below with regard to the exemplary embodiments that are not explicitly mentioned. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

• 1a and 1b Schematic overall view of a holding element, 1a , and schematic view of the fold, 1b , a holding element;
• 2 guide element;
• 3a and 3b fixing element, 3a , and adjusting element, 3b , a height adjustment device;
• 4a until 4c Schematic views of threaded plate with thread, 4a and 4b , and clamp washer, 4c , a locking device;
• 5a and 5b Schematic view of guide element and threaded plate, 5a , and schematic view of fixed locking device after assembly with guide element (not shown) and holding element and tightened clamping disc for locking, 5b ;
• 6 Schematic view of the holding element and height adjustment device, with the adjustment element being supported by the lateral surface on the fold of the holding element.

The accompanying figures are intended to provide a further understanding of embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the foregoing advantages will become apparent by reference to the drawings. The elements of the drawings are not necessarily shown to scale with respect to one another.

In the figures of the drawing, elements, features and components that are the same, have the same function and have the same effect--unless stated otherwise--are each provided with the same reference symbols.

The figures are described in a coherent and comprehensive manner below.

In 1a a holding element (1) according to the invention is shown. In the present case, the holding element (1) has three recesses for fixing a frame (2). Also shown in the upper area (1a) of the holding element (1) are two recesses for accommodating strap pockets (4) and in the lower area of the holding element (1) a recess for a strap pocket (4). If the frame is pushed in after the retaining elements (1) have been installed in a wall recess, the hinge pockets will find space here. The holding element (1) is fastened in the wall recess by means of fastening means which are passed through the recesses for the fastening means (5). The fastening means are preferably screws or nails. In the upper area (1a), the holding element (1) has a bevel (3), which 1b is shown in more detail. An adjustment element (22) of a height adjustment device (20) can be supported on the fold with the outer surface of the base body (29) and the height of the frame can thus be adjusted by turning the adjustment element (22) about the axis of rotation. The fixing element (21) is attached to the frame so that it is stationary. The interaction between the height adjustment device (20), especially the adjustment element (22), and the holding element (1) is 6 shown. In 6 the frame to which the fixing element (21) is attached is not shown.

2 shows a guide element (10) which can be attached to a frame. The guide element (10) has recesses for acquisition of fastening means (11), a vertical movement track (12) and an insertion track (13). Via the insertion track (13), as in 5a shown, the threaded plate with thread (31,34) are inserted and this can be performed in height adjustment in the height movement track (12). As soon as the correct height has been found, this is determined using the clamping disc (32), in which the clamping disc (32) detachably connects the locking device, which is attached to the frame, to the holding element (1). this is in 5b shown.

3a and 3b show the two elements of a height adjustment device (20). 3a shows a fixing element (21) which has a recess for receiving a round mandrel (23), a sliding projection (24) and four recesses for receiving fastening means (25).

The adjusting element (22), 3b , shows a bore for a pin (26), a receptacle for guiding the sliding projection (27), a round mandrel (28) and a flat, partially elliptical base body (29).

The fixing element (21) is attached to a frame, in this case with screws or nails. The adjusting element (22) is inserted into the fixing element (21) by means of the round mandrel (28), which engages in the recess (23) of the fixing element. In order to ensure that the adjusting element (22) does not fall out, for example during assembly, and to ensure better guidance of the adjusting element (21) during a rotation as part of the height adjustment, the fixing element (21) has a sliding projection (24) which is inserted into the recess for receiving of the sliding projection (27) of the adjusting element (22) can engage. If the sliding projection (24) engages in the corresponding recess (27), the adjusting element cannot fall out during assembly of the frame. As soon as the frame has been inserted into the wall recess in which the holding elements (1) have already been installed, the adjustment element (22) can be rotated, with the outer surface of the elliptical part of the base body (29) forming the fold (3) of the holding element (1). contacted and thereby the height of the frame can be adjusted. In order to achieve the rotation, a pin, preferably a metal pin, is inserted into the receptacle (26) in the embodiment of the adjustment element (22) shown. This creates a lever with which the adjusting element (22) can be rotated. After completing the rotation and determining the set height, the pin can be removed again. In 6 shows the interaction of the height adjustment device (20), consisting of the fixing element (21) and the adjustment element (22), with the fold (3) of the holding element (1), the locking device (30) also being implemented and the clamping disc (32) applied and tightened so that the height is fixed.

4a and 4b show a threaded plate (31) in different views. The threaded plate (31) comprises a plate (33) and a thread (34).

In 4c an embodiment of a clamping disc (32) is shown. The clamping disc has a recess for receiving a thread (35). In the present case, the receptacle (35) has a counter-thread.

As soon as the height of a frame is set, as in 5a and 5b shown, the threaded plate (31) is inserted into the guide element via the insertion track (13). The height can then be determined by tightening the clamping disc (32), as shown in 6 shown. The clamping disc (32) can also have recesses for receiving a pin. By inserting the pin, a lever can be created which allows the clamp washer (32) to be rotated and tightened. The pin is then removed again.

Although the present invention has been fully described above on the basis of preferred exemplary embodiments, it is not restricted to them, but rather can be modified in a variety of ways.

Reference List

1

holding element

1a

upper part holding element

2

Recesses for fixing the frame

3

edging

4

Recesses for accommodating strap pouches

5

Recesses for receiving fasteners

10

guide element

11

Recesses for receiving fasteners

12

Height Movement Track

13

insertion track

20

height adjustment device

21

fixing element

22

adjustment element

23

Recess for receiving a round mandrel

24

slide protrusion

25

Recesses for receiving fasteners

26

Drilled hole to accommodate a pin for height adjustment

27

Recording for guiding the slide projection

28

round mandrel

29

Flat, partially elliptical body

30

locking device

31

threaded plate

32

clamp washer

33

plate

34

thread

35

Recess for receiving thread

QUOTES INCLUDED IN DESCRIPTION

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

Patent Literature Cited

• DE 202006002063 U1 [0005]
• DE 102004063729 A1 [0006]

Claims (14)

Installation kit for frames, comprehensive at least two retaining elements (1), wherein the retaining elements (1) are not connected to one another, and wherein the retaining elements (1) can each be fastened to a reveal of a wall recess of a wall body, preferably by means of a detachable connection, at least two guide elements (10) for attachment to a frame, at least one height adjustment device (20) for attachment to a frame, the height adjustment device comprising a fixing element (21) and an adjustment element (22) and the two elements (21, 22) being detachably connected to one another; and at least two locking devices (30), the locking devices being designed to releasably connect a frame to the holding elements (1), the locking device (30) preferably being designed in two parts. Installation kit according to claim 1 , wherein each holding element (1) has at least one fold (3). Installation kit according to claims 1 and 2 , wherein each holding element (1) has at least two recesses for receiving strap pockets (4). Kit according to any one of the preceding claims, wherein the kit comprises at least two height adjustment devices (20). Installation kit according to one of the preceding claims, wherein the adjusting element (22) has a formation (28), preferably a round formation, more preferably a round mandrel (28), and the fixing element (21) has a recess for receiving the formation (23), preferably the round shape, preferably the round mandrel. Installation kit according to one of the preceding claims, wherein the fixing element (21) has a sliding projection (24) and the adjusting element (22) has a receptacle for guiding the sliding projection of the fixing element (27), the sliding projection (23) and the receptacle for guiding the Sliding projection (27) are designed as a tongue and groove. Installation kit according to one of the preceding claims, wherein the adjustment element (22) has a base body with a partial elliptical, elliptical, trapezoidal, diamond, oval, rectangular or square shape, preferably with a partial elliptical shape (29). Installation kit according to one of the preceding claims, wherein the fixing element (21) is designed to be fastened to a frame. Kit according to one of the preceding claims, in which each guide element (10) has an insertion track (13) and a height movement track (12). Kit according to one of the preceding claims, wherein the locking device (30) comprises a threaded plate (31) and a clamping washer (32). Device for enclosing a wall recess of a wall body, comprising - a frame, - at least two holding elements (1) which can be fastened in a reveal of the wall recess on the wall body, preferably by means of a detachable connection, and the holding elements (1) are not connected to one another; - At least two guide elements (10) which are attached to the frame; - At least one height adjustment device (20) which is attached to the frame, wherein the height adjustment device (20) comprises a fixing element (21) and an adjustment element (22) and wherein the two elements are detachably connected to one another; and - At least two locking devices (30), the locking devices (30) being designed to detachably connect the frame to the holding elements (1), the locking device is preferably designed in two parts. Height adjustment device (20) for attachment to a frame, comprising a fixing element (21) and an adjustment element (22) and the two elements being detachably connected to one another. Height adjustment device (20) for attachment to a frame according to claim 12 , wherein the fixing element (21) has a sliding projection (24) and the adjusting element (22) has a receptacle for guiding the sliding projection of the fixing element (27), the sliding projection (24) and the receptacle for guiding the sliding projection (27) preferably like Tongue and groove are formed. Height adjustment device (20) for attachment to a frame according to claim 12 or 13 , wherein the adjusting element (22) has a shape (28), preferably a round shape (28), more preferably a round mandrel (28), and the fixing element (21) has a recess for receiving the shape (23), preferably the run the shape, more preferably of the round mandrel.

Images