EP3282075B1 - Closed frame with backfilling device - Google Patents

Description

The invention relates to a surrounding frame with a backing device for backing a surrounding frame with an adjustable mouth width. The invention also relates to uses of such a backing device and a method for assembling such an enclosing frame.

Frames are used in the reveal of masonry and are used to hold a door leaf. Conventional frames usually have at least three frame spars (also called frame bars in the following) that are connected to one another. Frames are usually made of wood-based materials or metal, such as steel. In the following, the main focus will be on these steel or metal frames.

For the installation of known frames, these are first positioned in a masonry reveal. The frame is then connected to the masonry by means of suitable fastening elements, in particular screw fasteners. In many cases, a spacer element is inserted between the masonry and the frame so that the frame maintains its position during assembly. It is often difficult to introduce a spacer element between the frame rail and the wall reveal, especially if the distance between the frame rail and the wall reveal is very small.

From the DE 10 2014 116 290 A1 An enclosure frame made of metal with adjustable mouth width is known, which is provided with a first frame part rod designed as a metal profile part and a second frame part rod designed as a metal profile part, the frame part rods being designed to enclose a wall area and engage each other displaceably to adjust a mouth width. The frame is attached using an inclined screw-dowel fastener using a mounting bracket or by foaming using assembly foam. In addition to its simple structure and aesthetic appearance, the surrounding frame is characterized by the fact that it can be dry attached without subsequent mortar or masonry work.

From the EP 2 213 825 B1 a frame with one-piece frame spars with a spacing adjustable backing device is known which has adjusting wedges. From the EP 2 196 613 B1 a one-piece frame spar, a frame that can be provided therewith and a method for fastening such a frame spar is known, in which fastening can be carried out from a front side of the frame by means of fasteners. From the EP 2 290 186 B1 a one-piece frame spar, a frame fastening device and a frame provided therewith are known, in which a backing device has a plurality of spacer elements. Another backing device for one-piece frame bars is from the EP 2 333 221 B1 known. The frames according to the prior art according to the EP 2 213 825 B1 , the EP 2 196 613 B1 and the EP 2 290 186 B1 can also be installed dry without subsequent mortar or masonry work.

From the U.S. 3,788,019 A an adjustable metal door frame construction comprising a first frame part bar, a second frame part bar and three retaining clips is known. The retaining clips are attached to the wall area of a building opening by nails in holes provided for this purpose. The retaining clamps have angles at their ends which are designed to receive retaining flanges of the first frame part rod and retaining flanges of the second frame part rod, so that both frame part rods are clamped to the retaining clamps.

From the DE 101 05 267 A1 a frame with a rear frame profile and a rebate-side frame profile is known. The frame profile on the rebate side is attached to the wall area by means of a bracket. The rear frame profile is clamped in place by means of a bracket that has a clamping strap. Such an enclosure frame has a fixed mouth width.

Also a frame with a fixed mouth width and without clamping effect is in the FR 2 701 286 A1 disclosed. The second frame part rod is here firmly screwed to a flange of a spacer element.

Based on the prior art according to DE 10 2014 116 290 A1 It is the object of the invention to improve a surrounding frame with an adjustable mouth width in such a way that it can also be used as a frame for fire doors. Based on the prior art according to EP 2 213 825 B1 , the EP 2 196 613 B1 and the EP 2 290 186 B1 It is the object of the invention to create a simplified large-scale production of frames that are suitable for very different structural conditions.

This object is achieved by the subjects of the independent claims.

Advantageous refinements are the subject of the subclaims.

According to a first aspect, the invention creates an enclosure frame with a backing device for backing an enclosure frame with adjustable mouth width, which enclosure frame has a first frame part rod and a second frame part rod, the frame part rods being designed to enclose a wall area bordering a building opening and engage each other to adjust a mouth width , wherein the backing device comprises at least one spacer element which has an opening for a fastener to reach through, by means of which the first frame part rod is to be fastened to the wall area, and which is designed to maintain a distance between the first frame part bar and the wall area, wherein on the spacer element or on at least one of a plurality of spacer elements a clamping lug is formed in each case, which for the displaceable clamping of a flange of the second frame part rod a n is formed in the first frame part rod.

It is preferred that the clamping tab is formed at a first end of the spacer element, the spacer element having a bend at a second end opposite the first end, so that the spacer element is formed in multiple layers at the second end.

It is preferred that an end region of the bend directed towards the first end is designed as a stop for the flange.

It is preferred that a first leg of the bend on which the clamping lug is formed is longer than the second leg.

It is preferred that the area of the first leg forming the clamping lug runs obliquely towards the side of the second leg in the unloaded state.

According to the invention, the opening is open on one side of the spacer element, so that the spacer element can be pushed onto a shaft of the fastener that is pre-attached to the first frame part rod.

It is preferred that the opening is designed as an elongated hole.

It is preferred that the clamping lug is formed on a first end of the spacer element, the opening being formed on a second end opposite the first end.

It is preferred that the clamping tab is formed at a first end of the spacer element, the spacer element having an anti-tilting stop at a second end opposite the first end, which when in use on an inside of the first frame part rod strikes to counteract tilting of the spacer around the fastener.

It is preferred that an insertion bevel is formed at a free end of the clamping lug.

According to the invention, the surrounding frame with adjustable mouth width comprises a first frame part rod and a second frame part rod, the frame part rods being designed to enclose a wall area bordering a building opening and to engage each other displaceably to adjust a mouth width, and furthermore the backing device according to one of the preceding embodiments.

It is preferred that a step is formed on a corner region of the surrounding frame, the first step flank of which is formed by the first frame part bar and the second step flank is formed by the second frame part bar.

It is preferred that the surrounding frame is designed as a surrounding frame for fire doors.

It is preferred that the frame is a surrounding frame according to one of the preceding configurations.

It is preferred that the frame is an enclosing frame with adjustable mouth width, which has a first frame part rod and second frame part rod, the frame part rods being designed to enclose a wall area bordering a building opening and to engage each other displaceably to adjust a mouth width and that the fire protection door also has a Has a set of fasteners and a backing device according to one of the embodiments explained above.

A preferred embodiment of the invention relates to an enclosing frame made of metal with an adjustable mouth width, with a first frame part rod designed as a metal profile part and a second frame part made as a metal profile part Frame part rod, wherein the frame part rods are designed to enclose a wall area and engage one another displaceably with respect to one another in order to set a mouth width.

It is preferred that a step is formed on a corner region of the surrounding frame, the first step flank of which is formed by the first frame part bar and the second step flank is formed by the second frame part bar.

According to the invention, the frame part rods are connected to one another by a clamp connection. The clamping connection is formed at least in part by spacer elements that are used to back the frame.

It is preferred that the clamping connection is arranged in the area of the step corner formed by the step flanks.

It is preferred that the first frame part rod is to be fastened to the wall area with the interposition of a spacer element, the spacer element or at least one of several spacer elements (for example one per fastening point or one at several of a larger number of fastening points) having a clamping lug that has a forms the first clamping part or a first clamping jaw of the clamping connection.

It is preferred that the clamping connection has a first clamping jaw formed by a tab of a spacer element and a second clamping jaw formed by a profile area of the first frame part rod, so that a slot-shaped receptacle for an insertion area of the second frame part rod is formed between the clamping jaws.

A preferred enclosing frame is characterized by a first part frame with several first frame part bars designed as metal profile bars and a second part frame with several second frame part bars designed as metal profile bars, the part frames for enclosing a soffit area are designed and engage each other displaceably to adjust a mouth width.

It is preferred that the surrounding frame has a wall fastening device which is designed to fasten only the first frame part bar to the wall area, and that the second frame part bar is only to be fastened via the clamp connection, with no wall fastening being provided for the second frame part bar.

It is preferred that the wall fastening device is designed for fastening by means of inclined dowel mounting.

It is preferred that of the frame part rods only the first frame part rod is designed for attaching door fitting parts.

For example, door hinges, counter bearings for catches or bolts and door seals for sealing on a door leaf are only attached to the first frame part bar and not to the second frame part bar.

It is preferred that the clamping connection on one of the frame part rods has a slot-shaped receptacle with a funnel-shaped insertion opening for receiving an insertion area of the other frame part rod.

It is preferred that the backing device has a first spacer element with the clamping lug and at least one second spacer element without a clamping lug, the first and the second spacer element being designed for reaching through with a screw fastener and the second spacing element for engaging over, supporting and / or clamping the clamping lug is formed when the screw fastener is tightened.

A preferred embodiment of the invention relates to a backing device for a frame spar of a frame of doors or gates, which is pre-fastened in a reveal. Another aspect of the invention relates to a Spacer element for use in such a backing device and a method for backing the pre-attached frame spar.

A backing device is preferably provided for a frame spar of a frame of doors, in particular fire doors, which is pre-attached in a reveal, which has at least one spacer element for backing the frame spar, the spacer element having a fastener clamping device for clamping to a shaft, in particular a threaded shaft, of a fastening element. Preferably, the frame spar is divided into several frame part bars to form a frame with an adjustable mouth width.

In an advantageous embodiment, the backfeeding device is designed in such a way that it is possible to backfeed a frame spar in a simple manner and without any aids, in particular tools.

When using the backing device, the frame and in particular the frame spars are preferably pre-fastened in the wall reveal by means of fastening elements before the frame is backed with the spacer element. This pre-fastening is advantageously carried out on a soffit of a masonry, the surroundings of which have already been largely completed. This can be, for example, a stud frame (drywall) or an already largely finished and plastered masonry. Thus, there is only a small gap between the frame spar and the reveal, through which the fastening element is to be introduced.

The spacer element is inserted through the gap between the frame spar and the reveal and clamped onto a threaded shaft of the fastening element by means of the fastener clamping device. The fastener clamping device advantageously produces a clamping effect.

With a flat and plate-like configuration of the spacer element, it is also possible to insert the spacer element into a small gap remaining between the masonry and the frame member and to clamp it onto the threaded shaft without using an assembly aid. For this purpose, the spacer element is gripped on a side opposite the elongated hole and inserted into the gap between the frame spar and the wall reveal and pushed onto a threaded shaft of a fastening element by means of the elongated hole. The spacer element is then preferably pushed onto the threaded shaft of the fastening element either by fully pressing it in or by means of a tool such as a hammer, until it strikes a leg region of the frame spar.

In an advantageous embodiment, the fastener clamping device is a formed elongated hole. Due to the conical design of the elongated hole, a clamping effect is achieved which increases the further the spacer element is pushed onto the threaded shaft of the fastening element. Furthermore, a conical elongated hole represents an inexpensive way of producing a fastener clamping device.

In an advantageous embodiment, the spacer element has an anti-tilt stop. The anti-tilting stop is advantageously designed to be rectangular for simple manufacture. The anti-tilt stop is preferably designed in such a way that it counteracts tilting of the spacer element in the clamped-on state. The anti-tilt stop counteracts the tipping of the clamped-on spacer element on the one hand and, on the other hand, the anti-tilt stop in the stop state ensures that an obliquely introduced spacer element assumes a horizontal position again.

The spacer element is advantageously designed asymmetrically.

The invention also relates to a spacer element for using a backing device. The spacer element is characterized by its fastener clamping device, which is preferably a conical elongated hole. The fastener clamping device is used to clamp the spacer element on a threaded shaft of a fastening element. Furthermore, the spacer element has an anti-tilt stop which prevents the spacer element from tilting and serves to align the spacer element in the pushed-on state. The spacer element is also characterized by its easy-to-use assembly.

The invention also relates to a method for backing a prefixed frame spar, the frame being backed with a spacer element of a backing device. The method ensures the introduction of a spacer element between a frame spar and the reveal in a very late construction phase, in particular in the final construction, with a gap remaining between the frame spar and the wall reveal for introducing the spacer element is very small. For this purpose, the spacer element is gripped on a side opposite the elongated hole and inserted into the gap between the frame spar and the wall reveal and pushed onto a threaded shaft of a fastening element by means of the elongated hole. The spacer element is then pushed onto the threaded shaft of the fastening element either by pressing it in by hand or by means of a tool, such as a hammer, until it strikes against a leg region of the frame spar. In addition, the method can also be used to back-feed a frame spar, the surroundings of which have not yet been largely completed.

The spacer element is advantageously clamped onto a threaded shaft of a fastening element by means of an elongated hole until an anti-tilt stop of the spacer element strikes the frame rail.

A preferred embodiment of the invention created a surrounding frame with a backing device with the special feature that an adjustable mouth width can also be achieved for fire protection. This is achieved in particular by adapting a first spacer plate (example of a spacer element).

The spacer plate is preferably formed as a folded-back sheet metal, one of the legs being made shorter. The other leg preferably has an insertion bevel at the end. This allows a clamp to be formed at the fastening points, where the frame profile part of the opposite hinge side can be attached.

In this way, a simple spacer can preferably be made into a clamp by bending it over. By combining a fastener, such as a screw-dowel fastener or another fastener suitable for the respective material of the wall area with at least the first spacer element formed with the clamping lug, a very firm and secure fastening of a hinge-side frame profile part - example for the hinge-side Frame part bar - reach. In this way, the forces imposed on a door leaf of a fire protection door in the event of a fire can be diverted via the door hinges and the counter bearing for the door lock or its catch, which is also formed on the hinge-side frame profile part. If necessary, further spacers - preferably without the clamping plate and more preferably designed in the same way as the spacer elements that are in the EO DE 10 2009 057 040 A1 are shown and described - used for back lining, so that a back lining is achieved that is correspondingly adapted to the distance between the first frame part rod and the wall area.

The first spacer has the clamping tab. An insertion area of the second frame part rod on the opposite hinge side is inserted into the gap between the clamping strap and a profile area of the first frame part rod.

Preferably, the second frame part bar essentially has a covering function, all other functions of the frame are fulfilled by the hinge-side frame part bar.

According to a further aspect, the invention relates to the use of a spacer element, which has a thicker area with an opening for reaching through a fastener and a thinner area for forming a clamping lug, as a first spacer for backing a hinge-side frame profile part of a surrounding frame with adjustable mouth width for a fire protection door, an insertion area of a counter-hinge-side frame profile part of the surrounding frame for adjusting the opening width can be slidably inserted into a slot between the clamping strap and a profile area of the hinge-side frame profile part.

The thicker area is preferably formed by a bend, a first, longer leg of the bend forming the clamping lug. The spacer element is preferably used in such a way that a second, shorter leg of the bend is directed towards the frame profile part on the hinge side.

The end of the shorter leg is preferably used as a stop for the insertion area.

According to the invention, the opening is open at the free end of the thicker area in order to push the spacer element with the opening onto a shaft of a pre-attached fastener. The opening is preferably designed as an elongated hole. The opening preferably has a greater clear width at the free end than in a further inner region. A border of the opening preferably tapers inward from the free end.

1. a) lockeres Vorbefestigen eines als bandseitiger Zargenteilstab zu verwendenden ersten Zargenteilstabs mittels mehrerer Befestiger an einem Wandbereich;
2. b) Hinterfüttern des ersten Zargenteilstabs mit einer Hinterfütterungsvorrichtung, die wenigstens ein mit einer Klemmlasche ausgebildetes Abstandshalteelement aufweist, und insbesondere mit einer Hinterfütterungsvorrichtung nach einer der oben erläuterten Ausgestaltungen, wobei an wenigstens einigen der Befestigungsstellen das mit der Klemmlasche ausgebildete Abstandshalteelement auf einen Schaft des Befestigers aufgeschoben wird und wobei gegebenenfalls weitere Abstandshalteelemente - vorzugsweise ohne Klemmlasche - auf den Schaft des Befestigers aufgeschoben werden, bis der erste Zargenteilstab mit dem erwünschten Abstand zum Wandbereich hinterfüttert ist;
3. c) Einschieben eines Einsteckbereichs des als gegenbandseitigen Zargenteilstab zu verwendenden zweiten Zargenteilstabs, um die erwünschte Maulweite zu erreichen;
4. d) Befestigen der Befestiger, so dass der erste Zargenteilstab fest auf der Hinterfütterungsvorrichtung aufliegt.

According to a further aspect, the invention relates to a method for assembling a surrounding frame with an adjustable mouth width according to one of the embodiments described above, comprising the steps:

1. a) loosely pre-fastening a first frame component bar to be used as a hinge-side frame component bar by means of several fasteners on a wall area;
2. b) backing the first frame part bar with a backing device which has at least one spacer element designed with a clamping lug, and in particular with a backing device according to one of the configurations explained above, wherein the spacer element formed with the clamping tab is pushed onto a shank of the fastener at at least some of the fastening points and further spacer elements - preferably without a clamping tab - are pushed onto the shank of the fastener until the first frame part bar is backed at the desired distance from the wall area;
3. c) inserting an insertion area of the second frame sub-bar to be used as the counter-hinge-side frame part bar, in order to achieve the desired opening width;
4. d) Fastening the fasteners so that the first frame part bar rests firmly on the backing device.

In one embodiment of the method, step c) is carried out before step d). The clamping force of the clamping connection is preferably increased by tightening the fastener. For this purpose, a second spacer element without a clamping lug is particularly preferably used as a clamping jaw for securing the clamping lug.

In another embodiment, the clamping force of the clamping connection is brought about solely by the elasticity of the clamping strap. Step c) can be carried out before step d), but step d) can also be carried out before step c).

Fig. 1

eine perspektivische Ansicht einer Ausführungsform einer Umfassungszarge mit einstellbaren Maulweite für Feuerschutztüren, mit einem ersten Zargenteil und einem zweiten Zargenteil, die getrennt voneinander dargestellt sind, und einer Hinterfütterungsvorrichtung, die wenigstens ein Abstandshalteelement aufweist;

Fig. 2

eine Seitenansicht auf die Umfassungszarge von Fig. 1, auf die mit Türbändern versehene Seite hin gesehen;

Fig. 3

eine Seitenansicht auf die Umfassungszarge, wie in Fig. 2, wobei das erste Zargenteil und das zweite Zargenteil miteinander verbunden sind;

Fig. 4

eine Seitenansicht auf die Umfassungszarge wie in Fig. 3, auf die mit dem Schlossgegenlager versehene Seite hin;

Fig. 5

eine Vorderansicht auf die Umfassungszarge von Fig. 1 auf die Gegenbandseite hin gesehen;

Fig. 6

eine Draufsicht auf die Umfassungszarge von Fig. 1;

Fig. 7

einen Querschnitt durch einen der Seitenholme der Umfassungszarge, die in Fig. 3 oder Fig. 4 gezeigt sind;

Fig. 8

einen Schnitt entlang der Linie A-A von Fig. 3;

Fig. 9

einen Schnitt entlang der Linie B-B von Fig. 5;

Fig. 10 bis 17

Ansichten von unterschiedlichen Seiten auf ein erstes Abstandshalteelement, welches eine Klemmlasche zum Bilden einer Klemmverbindung zum Verbinden des ersten Zargenteils und des zweiten Zargenteils aufweist;

Fig. 18

eine Aufwicklung eines Blechstücks, aus dem das Abstandshalteelement von Fig. 10 bis 17 zu fertigen ist;

Fig. 19 bis 21

Ansichten, teils weggebrochen, von unterschiedlichen Seiten auf das zweite Zargenteil;

Fig. 22

eine Ansicht auf das erste Zargenteil auf die Bandseite hin gesehen; und

Fig. 23

einen Schnitt entlang der Linie XXIII-XXIII von Fig. 22.

Embodiments of the invention are explained in more detail below with reference to the accompanying drawings. It shows:

Fig. 1

a perspective view of an embodiment of an enclosure frame with adjustable mouth width for fire doors, with a first frame part and a second frame part, which are shown separately from each other, and a backing device, which has at least one spacer element;

Fig. 2

a side view of the surrounding frame of Fig. 1 , seen on the side provided with the door hinges;

Fig. 3

a side view of the enclosure frame, as in Fig. 2 wherein the first frame part and the second frame part are connected to one another;

Fig. 4

a side view of the surrounding frame as in Fig. 3 , on the side provided with the lock counter bearing;

Fig. 5

a front view of the surrounding frame of Fig. 1 seen on the opposite hinge side;

Fig. 6

a plan view of the surrounding frame of Fig. 1 ;

Fig. 7

a cross section through one of the side rails of the surrounding frame, which is shown in Fig. 3 or 4 are shown;

Fig. 8

a section along the line AA of Fig. 3 ;

Fig. 9

a section along the line BB of Fig. 5 ;

Figures 10 to 17

Views from different sides of a first spacer element, which has a clamping tab for forming a clamping connection for connecting the first frame part and the second frame part;

Fig. 18

a winding of a piece of sheet metal from which the spacer element of Figures 10 to 17 is to be finished;

Figures 19 to 21

Views, partly broken away, from different sides of the second frame part;

Fig. 22

a view of the first frame part seen on the hinge side; and

Fig. 23

a section along the line XXIII-XXIII of Fig. 22 .

In the Figures 1 to 9 a preferred embodiment of an enclosure frame 10 for a fire door is shown. The surrounding frame 10 has a first frame part 12 and a second frame part 14, which can be connected to one another in a displaceable manner by means of a clamping connection 16 in order to set a mouth width of the surrounding frame 10, and a backing device 18.

The first frame part 12, which individually in the Fig. 22 and 23 is shown, in the example shown is a hinge-side frame part to which door hinges 20 are attached and on which a counter bearing for a lock of a door leaf, not shown, of the fire door is formed. Examples of the door leaf are in the DE102005023426B3 or the DE102010005719B4 or the DE102010044195A1 shown and described; Reference is made to these publications for further details of the door leaf. The counter bearing is referred to below as the lock counter bearing 22.

The second frame part 14, which individually in the Figures 19 to 21 is shown, in the example shown is a frame part on the opposite hinge side, which essentially exercises a covering function, but no holding function, and has an insertion region 24 which can be inserted into a slot 26 on the first frame part. The slot 26 is part of the clamping connection 16.

The backing device 18 is used for backing the surrounding frame 10 in order to connect the surrounding frame 10 firmly and without play to a wall area. For this purpose, the backing device 18 has at least one first spacer element 28 and optionally at least one second spacer element 30 for bridging a distance between a frame spar 32 of the surrounding frame 10 and the wall area. Depending on the size of the distance, more or fewer spacer elements 28, 30 are used.

On the first spacer element 28, which in detail and individually in the Figures 10 to 17 is shown, a clamping tab 34 is formed to form the clamping connection 16.

The first and the second spacer element 28, 30 are preferably designed for a screw fastener to reach through, so that the spacer elements 28, 30 are pressed together by tightening the screw fastener. The second spacer element 30 preferably has a clamping jaw area 31, which is supported on the clamping tab 34 and can press it firmly against the insertion area 24.

How best to look Fig. 1 As can be seen, the first frame part 12 has a plurality of first frame part rods 36, 38, 40 so as to form an at least three-sided frame. In particular, a hinge-side first frame part bar 36, an upper first frame part bar 38 to be arranged horizontally above, and a lock-side first frame part bar 40 are provided. All first frame part rods 36, 38, 40 are formed from a metal profile, in particular a steel profile, the profile contour of which in particular consists of Fig. 7 , 8th and 23 can be seen. Accordingly, a Z-shape is provided as the basic shape, with end edge regions 42 being bent back. The Z-shape forms a stop fold 44 for receiving the closed door leaf. A row of fastener receptacles 48 are provided on a first flank 46 of the stop fold 44 in the case of the two first frame part rods 36, 40 to be arranged vertically. A sealing groove 52 for a door seal (not shown) is formed on the second flank 50 of the stop rebate 44.

The fastener receptacles 48 have partially inclined cup-shaped depressions 54 for the complete accommodation of screw heads of screw-dowel fasteners (not shown). For more details on these recesses 54 and the fasteners, refer to the DE102009057037A1 and the DE202009001225U1 referenced. In particular, the cup-shaped recess 54 (after tightening the fastener) with an in Fig. 8 Cover cap 53 indicated in such a way that the cap 53 is flush with the Surface of the first flank 46 terminates. In this way, a visually high-quality concealed installation can be achieved.

Like in particular from Figs. 1 to 4 it can be seen that in the example shown here, the backing device 18 has a first spacer element 28 and optionally one or more second spacer elements 30 for each fastener receptacle 48. How out Fig. 7 and 8th it can be seen that the spacer elements 28, 30 are supported in the fastened state on support tabs 56, as shown in more detail in FIG DE102009057037A1 are described and shown. Reference is expressly made to this publication for further details on the design, function and assembly of the support brackets.

The second spacer elements 30 are designed as shown in more detail in FIG DE102009057040A1 is described and shown. Accordingly, the second spacer elements 30 are designed as plates that have a slot-shaped recess at one end, with which they can be pushed onto a pre-attached shaft of the screw-dowel fastener from the side and clamped, with an anti-tilt stop against lateral tilting is provided. The second spacer elements 30 are designed to be more stable than the clamping tab 34. In particular, the second spacer elements 30 are designed as sheet metal plates with a sheet metal thickness that is significantly thicker than the thickness of the clamping lug. The contours of the spacer elements 28, 30 at a second end 76 are identical or comparable to one another. At a first end 74, where the first spacer element 28 has the clamping tab 34, the second spacer element is somewhat shorter, but is designed so long that this end can serve as a clamping jaw area 31 for supporting the clamping tab 34.

An exemplary embodiment for the first spacer element 28 is described below with reference to FIG Figures 10 to 18 explained in more detail.

The first spacer element 28 is made from a piece of sheet metal 58, as shown in FIG Fig. 18 is shown. The sheet metal piece 58 is punched from a sheet metal with a sheet thickness that is comparable to the thickness of the insertion area 24 of the second frame part 14 is. In particular, the sheet metal thickness of the sheet metal piece corresponds to 0.9 to 1.1 times the thickness of the insertion area 24. In a preferred embodiment, in which the insertion area 24 can be clamped more firmly by tightening the screw-dowel fasteners, the thickness of the insertion area is 24 exactly the same as or slightly greater than the sheet metal thickness of the sheet metal piece 58.

The sheet metal piece 58 has an elongated rectangular main body 60 and a lateral rectangular projection 62 arranged offset to the center and a shorter leg 68 is formed.

The protruding area of the longer leg 68 forms the clamping tab 34.

The protruding area of the longer leg 68 is preferably bent towards the side of the shorter leg 66, so that the clamping tab 34 runs obliquely towards the side of the shorter leg 66 in the unloaded state. The free end edge of the longer leg 68 is preferably bent in the opposite direction away from the shorter leg 66. As a result, at a first free end 74 of the first spacer element 28, an insertion bevel 70 for inserting the insertion region 24 is created.

The end edge of the shorter leg 66 forms a stop 72 for the insertion area 24.

As a result of the bend 64, the first spacer element 28 has a double-layer design at the second free end and is very stable in this area. This double-layer area is punched out in such a way that an opening 78 is created for the fastener to reach through. The opening 78 is designed as an elongated hole 80 which is open at the second free end 76. This open end of the elongated hole is conically tapered from the outside to the inside, see above that a funnel-shaped insertion opening 82 is formed. At the other end, the elongated hole 80 is provided with a round closure 84.

The lateral projection 62 forms an anti-tilt stop 86.

The second frame part 14 is closer in Fig. 1 together with the first frame part 12 and in the Figures 19 to 21 shown alone. It has several second frame part rods 88, 90, 92, which are connected at the corner areas with a corner screw connection 94 and thus form an at least three-sided frame.

The second frame part rods 88, 90, 92 are formed from a metal profile, in particular a steel profile, the profile shape of which is best Fig. 9 is removable. Accordingly, the profile has an L-shape with a long L-leg 94, a short L-leg 96 and an additional end flange 98 bent back at right angles on the short L-leg 96 (in other words, the profile is approximately U-shaped with two U's Legs 94, 98 and a web 96 in between, one U-leg 94 being significantly longer than the other U-leg 98.).

The short L-leg 96 has the function of a frame mirror, while the end area of the long L-leg 94 forms the insertion area 24.

The insertion area 24 of the hinge-side second frame part bar 90 can be assembled by means of the clamping connection 16 with the hinge-side first frame part bar 36 to form a hinge-side frame spar 32a of the surrounding frame 10 which can be adjusted in its mouth width by relative displacement of the frame part bars 90, 36. Correspondingly, the upper first frame part bar 38 and the upper second frame part bar 90 together form an upper frame spar 32b and the counter-hinge-side first frame part bar 40 and the counter-hinge side second frame part bar 92 together form a counter-hinge-side frame spar 32c.

The clamping connection 16 is made more precise by the first spacer elements 28 arranged on the vertical first frame part rods 36, 40 their clamping lugs 34 and the adjacent profile area of the vertical first frame part rods 36, 40 are formed. Between the clamping lug 34 and these adjacent profile areas, see FIG Fig. 7 and 8th , the slot 26 is formed with the lead-in bevel 70.

The procedure for assembling the surrounding frame 10 is as follows. In Fig. 22 and 23 the first frame part 12 with corner-connected first frame part rods 36, 38, 40 with fire protection strips 100 made of intumescent material and at least one stabilizing lower metal profile 110 (here formed by a first and second angled sheet metal profile) is shown. On the outward-facing side of the vertical frame part bars, one support bracket 56 is clipped in for each fastener receptacle 48 to be used (all fastener receptacles 48 or, depending on the structural requirements, only some of the fastener receptacles can be used in the event of fire). This can already be prepared at the factory. The frame of the first frame part formed in this way is placed in the building opening to be closed by the fire door, and screw-dowel fasteners are inserted obliquely into the wall area at the fastener receptacles to be used, but initially only pre-fastened and not yet tightened.

Then the first spacer element 28 with its opening 78 is pushed onto the shank of the fastener from the side until the anti-tilt stop 86 strikes the inside of the frame mirror of the Z-shape, see FIG Fig. 7 and 8th .

The first spacer element 28 can be pushed onto the shaft of the pre-attached fastener, as is the case for the second spacer in FIG DE102009057040A1 is described and shown. The first spacer element 28 is pushed onto the shaft as the first element. If there is still another distance to be bridged between the metal profile of the corresponding frame part rod 36, 40 and the wall area, a second spacer element 30 can be pushed on, as shown in FIG Fig. 7 and 8th is indicated, if necessary, several second spacer elements 30 are to be used.

In one possible procedure, the screw of the fastener is tightened, as a result of which the spacers 28, 30 are pressed onto one another and the respective first frame part rod 36, 40 is backed. The second spacer 30 rests on the double-layered end of the first spacer 28. The thickness of the legs 66, 68 is selected so that the slot 26 is formed on the single-layer area of the other end between the inclined clamping tab 34 and the support tab 56 so that the insertion area can still be inserted under elastic clamping action.

The insertion areas 24, i.e. the long L-legs 64 of the vertical second frame part rods 88, 92 of the second frame part 14 are inserted into this slot 26 on both vertical sides via the insertion bevel and pushed in more or less according to the desired mouth width. The maximum depth of insertion is limited by the stop 72.

In this procedure, the clamping force of the clamping connection 16 is essentially exerted by the elasticity of the clamping tab 34. Since the second frame part 14 essentially only fulfills a covering function, this is sufficient for many cases.

In another possible approach, the insertion area 24 is inserted before the screw-dowel fasteners are fully tightened. In this procedure, the dimensions and thicknesses are preferably selected such that the clamping force of the clamping connection can be reinforced by the action of the clamping jaw 31 of the second spacer element 30. The screw fastener is thus used at the same time as a clamping screw for clamping the second frame part 14 to the first frame part 12.

As from the Fig. 7 and 8th It can be seen that a step 104 is formed on a corner area 102 of the surrounding frame 10 formed on the opposite hinge side, the first step flank 106 of which is formed by the first frame component rod 36, 40 and the second step flank 108 by the second frame component rod 88, 92 is formed. The fact that the clamping connection 16 is formed at the base of a step 104 makes it possible to achieve an attractive design, and it is not possible to see from the outside of the frame that it is a special frame with an adjustable mouth width.

With the backing device 18 shown here and the surrounding frame 10 provided with it, a visually appealing surrounding frame 10 with an adjustable mouth width M can be achieved with simple structural measures using a common parts strategy and using many identical parts as for other frames, which does not require subsequent mortar work and is therefore dry can be attached and yet meets all requirements, especially with regard to strength, for fire door frames.

List of reference symbols:

10

Wrap-around frame

12th

first frame part

14th

second frame part

16

Clamp connection

18th

Backfeeding device

20th

Hinge

22nd

Lock counter bearing

24

Insertion area

26th

slot

28

first spacer element

30th

second spacer element

31

Jaw area

32a

hinge-side frame spar

32b

upper frame rail

32c

frame spar on the opposite hinge side

34

Clamping lug

36

first frame part bar on the hinge side

38

upper first frame part bar

40

first frame part bar on the opposite hinge side

42

End edge area

44

Stop fold

46

first flank

48

Fastener mount

50

second flank

52

Sealing groove

53

Cover cap

54

cup-shaped depression

56

Support bracket

58

Sheet metal piece

60

Main body of the sheet metal piece

62

lateral projection of the sheet metal piece

64

Bend

66

shorter leg

68

longer leg

70

Lead-in bevel

72

attack

74

first free end

76

second free end

78

opening

80

Long hole

82

funnel-shaped insertion opening

84

round conclusion

86

Anti-tilt stop

88

hinge-side second frame part rod

90

upper second frame part bar

92

On the opposite hinge side, second frame part bar

94

long L-leg

96

short L-leg

98

End flange

100

Fire protection strips

102

Corner area of the surrounding frame

104

step

106

first step flank

108

second step flank

110

lower metal profile

M.

Mouth width

R.

Radius (rounding)

Claims (13)

1. Closed frame (10) with adjustable opening width (M), which closed frame (10) has a first frame sub-bar (36, 40) and a second frame sub-bar (88, 92), the frame sub-bars (36, 40; 88, 92) being designed for enclosing a wall region bordering a building opening and engaging on one another in a displaceable manner in order to set an opening width,

   characterized by a backfilling device (18) for back-lining the closed frame (10), the backfilling device (18) comprising at least one spacer element (28) which has an opening for the passage of a fastener by means of which the first frame sub-bar (36, 40) is to be fastened to the wall region and is designed for maintaining a distance between the first frame sub-bar (36, 40) and the wall region,

   wherein a clamping plate (34) is formed on the spacer element (28) or on at least one (28) of a plurality of spacer elements, the clamping plate (34) being configured to slidably clamp a flange (96) or insertion portion (24) of the second frame sub-bar (88, 92) to the first frame sub-bar (36, 40); and wherein the opening (78) is open on one side of the spacer element (28) so that the spacer element (28) can be pushed onto a shank of the fastener pre-attached to the first frame sub-bar (36, 40).
2. Closed frame (10) according to claim 1,
   characterized in
   in that the clamping plate (34) is formed at a first end of the spacer element (28), the spacer element (28) having a bend (64) at a second end opposite the first end, so that the spacer element (28) is formed in multiple layers in the region of the second end.
3. Closed frame (10) according to claim (2),
   characterized in that an end region of the bend (64) directed towards the first end is designed as a stop (72) for the flange or the insertion region (24).
4. Closed frame (10) according to claim 2 or 3,
   characterized in
   in that a first leg (68) of the bend (64), on which the clamping plate (34) is formed, is longer than a second leg (66) of the bend (64).
5. Closed frame (10) according to claim 4,
   characterized in
   in that the region of the first leg (68) forming the clamping plate (34) runs obliquely towards the side of the second leg (66) in the unloaded state.
6. Closed frame (10) according to any of the preceding claims, characterized in
   that the clamping plate (34) is formed at a first end of the spacer element (28), the opening (78) being formed at a second end opposite the first end.
7. Closed frame (10) according to any one of the preceding claims, characterized in
   that the clamping plate (34) is formed at a first end of the spacer element (28), the spacer element having an anti-tilt stop (86) at a second end opposite the first end, the anti-tilt stop (86), in use, abutting an inner surface of the first frame sub-bar (36, 40) to resist tilting of the spacer element (28) about the fastener.
8. Closed frame (10) according to any one of the preceding claims, characterized in
   that an insertion slope (70) is formed at a free end of the clamping plate (34).
9. Closed frame (10) according to any of the preceding claims, characterized in
   that a step is formed at a corner region of the closed frame (10), the first step flank of which is formed by the first frame sub-bar (36, 40) and the second step flank of which is formed by the second frame sub-bar (88, 92).
10. Closed frame (10) according to any of claims 8 or 9,
    characterized in
    that the closed frame (10) is designed as a closed frame for fire doors.
11. Fire door comprising a door leaf and a frame,
    characterized in
    that the frame is a closed frame (10) according to one of claims 1 to 10.
12. Use of a spacer element (28), which has a thicker region with an opening (78) for a fastener to engage through and a thinner region for forming a clamping plate (34), as a first spacer for backfilling a hinge-side frame part (12) of a closed frame (10) with an adjustable opening width for a fire door, wherein an insertion region (24) of a counter hinge-side frame part (14) of the closed frame (10) can be inserted in a displaceable manner into a slot (26) between the clamping plate (34) and a profile region or a support element (56) of the hinge-side frame part (12) in order to adjust the opening width, and wherein the opening at the free end of the thicker region is open in order to push the spacer element with the opening onto a shank of a pre-fixed fastener.
13. Method of assembling a closed frame (10) according to any one of claims 1 to 10, comprising the steps of:

    a) loosely pre-fastening a first frame sub-bar (36, 40) to be used as a hinge-side frame sub-bar to a wall area by means of a plurality of fasteners;

    b) backfilling of the first frame sub-bar (36, 40) with a backfilling device (18), wherein at at least some of the fastening points the spacer element (28) formed with the clamping plate (34) is pushed onto a shank of the fastener and, if necessary, further spacer elements (30) without clamping plate are pushed on until the first frame sub-bar (36, 40) is backfilled with the desired spacing from the wall region;

    c) inserting an insertion area (24) of the second frame sub-bar (88, 92) to be used as a counter hinge-side frame sub-bar in order to achieve the desired opening width,

    d) fixing the fasteners so that the first frame sub-bar (36, 40) rests firmly on the backfilling device (18).

Images