EP0799963B1 - Device for fixing a window assembly - Google Patents

Abstract

The equipment fastens a window insert into a frame, which has a stop edge projecting from at least part of its inner perimeter. At least one spring (1) can be fastened to a hole on the inside of the frame, and has a surface (6) along which the insert can slide, so that it is moved from its projecting, untensioned position, and into a depressed, tensioned position. On reaching a locking position, at least part of the tension in the spring is released, and it engages in a profile or a recess in the insert. The spring has a claw which is formed along with it in one piece, and which is used for fastening.

Description

The invention relates to a device for fastening a window insert or the like in a soffit frame built-in frame, the built-in frame having an at least partially peripheral stop edge and at least one bore which is designed according to claim 1, part 1 (compare with US-A-5 069 013).

Soffit frame installation frames, e.g. made of polymer concrete are known. Such built-in frames are cast in one piece and correspond in their external dimensions to the nominal dimensions of the masonry construction. Corresponding reveal frames of different depths exist for different wall thicknesses.

The soffit frame component that is walled in or concreted in during the creation of the outer wall forms the basis for dimensioned system windows. The reveal frame itself can be processed cost-effectively and it can be installed without an additional lintel.

When using a soffit frame, it is no longer necessary to brick windows and clean the window reveal. At the same time, there is no need to clean the windows. Likewise, the installation of corner protection rails on the inner edges of the window opening can be omitted by using reveal frames, since the reveal frame can be installed flush with the plaster. With single-layer masonry it is also possible to dispense with the installation of the inner and outer sol bench.

By separating the soffit frame from the window insert, there is the advantage that the latter cannot be contaminated during the concreting process or the masonry work or damaged during formwork. This is especially true when it comes to a high-quality window insert, whereby the glass, the turn-tilt fittings and the surface-ready window frames are not e.g. seeping cement slurry can be contaminated.

The subsequent insertion of the window into the reveal frame is carried out in such a way that the window insert is placed on a lower edge or groove of the reveal frame and is then pressed towards an at least partially circumferential stop edge. The window insert is then screwed laterally to the reveal frame, for which purpose the reveal frame has bores with a thread or comprising a threaded sleeve.

Under construction site conditions, however, it is problematic to thread a fastening screw into the through opening in the window frame, to find the correct position in relation to the threaded hole, and to establish the positive connection. This is particularly so because of contamination the bore in the reveal frame, especially in the form of clogging of individual threads, can occur with the result that a complete screwing in of the screw is not possible or only with great effort.

In addition, the fasteners, namely screws and corresponding washers, are supplied as an accessory pack and there is a risk that these fasteners will be lost during transport or on the construction site.

It is therefore an object of the invention to provide a device for fastening a window insert or the like in a soffit frame installation frame, with the aid of which the assembly process is simplified, the assembly time is reduced and the assembly safety is increased.

The object of the invention is achieved with an object according to the features of patent claim 1, the subclaims comprising at least expedient refinements and developments.

It is assumed that the installation frame is known per se and comprises a circumferential inner stop edge and at least one hole. The soffit frame has at least one, expediently two opposite latching springs fastened in the bore, which move when the window insert is inserted into the soffit frame from a protruding, quasi-relaxed position by sliding the window insert along at least one sliding surface of the detent spring into a retracted, tensioned position.
When the locking or end position of the window insert in the soffit frame is reached, the detent spring relaxes or the detent springs and relax snap into a profile or a corresponding recess in the window insert.

If necessary, the latching springs are temporarily tensioned when the window insert is pressed into the reveal frame, whereby these initially move away from the window insert in the direction of the reveal frame. At the moment when the window insert has reached its predetermined end position, the catch springs relax and are taken up by the profile of the window insert or a separately provided recess, as a result of which the window insert is securely fastened in the reveal frame with minimal assembly effort.

According to a further idea, the window insert is acted upon in cooperation with a circumferential elastic seal and by a latching edge of the spring which rests in or on the profile of the window insert with an additional radial force which leads to a tensioning of the elastic seal, so that the required tightness under thermal and moisture aspects is guaranteed.

The detent spring has a claw formed in one piece with it, which also has spring properties, the claw being pressed or pressed into the bore of the reveal frame and used for fastening there.

A preferred embodiment of the detent spring is based on a single-layer leaf spring, this leaf spring having symmetrical legs with respect to the fastening surface for the bolt or the claw. The legs are angled so that the corresponding voltage when inserting the window insert during actual insertion process and the desired relaxation when reaching the locking position.

In order to enable an advantageous centering of the window insert in addition to the slight engagement of the catch spring in the profile of the window insert, sliding surfaces are provided on the catch spring. The sliding surfaces of the detent spring are formed by angled legs, each of which is inclined with respect to the installation direction of the window insert, i.e. have a contact surface.

For disassembly of the window insert, an interior-side gap in the reveal frame and window insert is provided. Using a tool that is inserted into this gap, the spring can now be pushed back manually out of the locking position, so that the window insert can be removed from the reveal frame against the mounting direction.

When the locking position is reached, the detent spring, in cooperation with the profile or the corresponding recess on the window insert, fixes the latter in the reveal frame, further manual fastening activities, such as tightening a screw or the like, being unnecessary.

As mentioned, a circumferential elastic seal is advantageously arranged between the stop edge and the corresponding opposite surfaces of the window insert, which is compressed when the window insert is pressed in or mounted in the reveal frame. In the case where the window insert or the detent spring is his Has reached the predetermined locking or end position, there is also a partial relaxation of the circumferential elastic seal, which improves the fit of the detent spring in the corresponding profile.

Advantageously, inclined contact surfaces can be formed all around the outside of the window insert at the points where corresponding outer surfaces of the window insert come into contact with the sliding surfaces of the detent spring, so that neither the spring is overstretched nor excessive forces are required when mounting the window insert in the reveal frame.

By means of the device according to the invention for fastening a window insert, it is possible to considerably simplify the assembly process in that the manual insertion of a fastening screw or the like into a threaded bore located in the reveal frame is no longer necessary. Due to the fact that the special detent spring is interchangeable, but is connected to the reveal frame itself, the additional delivery of accessory material containing e.g. Screws, washers and the like, no longer necessary.

Possible play due to tolerances in the formation of the detent spring and / or the profile or the recesses in the window insert can be largely compensated for by the elastic effect of a circumferential seal between the stop edge and the window insert.

The invention will be explained in more detail below using an exemplary embodiment and with the aid of figures.

Fig. 1a bis c

verschiedene Ansichten einer Rastfeder in Blattfederausführung;

Fig. 2

verschiedene Ansichten eines Befestigungsbolzens zum Fixieren der Rastfeder mittels einer Bohrung in der Leibungsrahmen-Einbauzarge;

Fig. 3a und b

verschiedene Ansichten einer Rastfeder in Form einer Blattfeder mit einer vorgesehenen Verkrallung zum Fixieren in einer Bohrung der Leibungsrahmen-Einbauzarge;

Fig. 3c

eine Abwicklung der Rastfeder gemäß den Figuren 3a und b mit erkennbarer Verkrallung;

Fig. 4

einen Schnitt einer Draufsicht sowie einen Schnitt einer Seitenansicht eines Leibungsrahmens mit vorbereitetem Fenstereinsatz und leibungsrahmenseitig montierter Rastfeder;

Fig. 5

einen Schnitt einer Draufsicht sowie einen Schnitt einer Seitenansicht in einem weiteren Montageschritt des Fenstereinsatzes, wobei die Rastfeder sich bereits im vorgespannten Zustand befindet und

Fig. 6

einen Schnitt einer Draufsicht sowie einen Schnitt einer Seitenansicht des Leibungsrahmens mit montiertem Fenstereinsatz in End- bzw. Arretierungsposition des letzteren, wobei die Rastfeder sich im entspannten Zustand und innerhalb eines Profils bzw. einer Ausnehmung des Fenstereinsatz einrastend befindet.

Here show:

1a to c

different views of a detent spring in leaf spring design;

Fig. 2

different views of a fastening bolt for fixing the detent spring by means of a hole in the soffit frame installation frame;

3a and b

different views of a detent spring in the form of a leaf spring with a provided claw for fixing in a bore of the reveal frame installation frame;

Fig. 3c

a development of the detent spring according to Figures 3a and b with recognizable claw;

Fig. 4

a section of a plan view and a section of a side view of a soffit frame with a prepared window insert and a locking spring mounted on the soffit frame side;

Fig. 5

a section of a plan view and a section of a side view in a further assembly step of the window insert, wherein the detent spring is already in the pretensioned state and

Fig. 6

a section of a plan view and a section of a side view of the soffit frame with the window insert installed in the end or locking position of the latter, the detent spring relaxed in the State and located within a profile or a recess of the window insert.

An example of a detent spring 1 will first be described with reference to FIG.

The detent spring 1 is formed in the example shown as a single-layer leaf spring with symmetrically opposite legs 2 and 3, which include a substantially flat mounting surface 4.

As can be seen from the top view according to FIG. 1c, the fastening surface 4 has a bore 5 for receiving a fastening bolt (see FIG. 2). The front view of the detent spring 1 according to FIG. 1b clearly shows the angled legs 2 and 3, which later ensure interaction with the corresponding surfaces of the window insert for the necessary tension and relaxation.

As is clear from FIGS. 1a and 1c, the legs 2 and 3 each have sliding surfaces 6 and have a latching edge 7. When the window insert is installed, a corresponding contact surface slides along the sliding surface 6 and exerts a force on the respective leg 2, 3, so that it moves from a protruding relaxed position into a retracted tensioned position and when the locking position of the window insert in the soffit frame is reached, the legs 2 and 3 relax.

In the fastening bolt 8 shown by way of example in FIG. 2, an embodiment with a partial longitudinal slot 9 is provided, which ensures a certain spring action of the bolt 8 when it is pressed or driven into the bore of the reveal frame. The bolt can also be used have a pressing surface 10, which can also have a grooved or corrugated shape, which increases the seat of the fastening bolt 8 in the corresponding hole in the reveal frame.

3a to c, a single-layer leaf spring 11 is to be described in an exemplary embodiment, which corresponds to the embodiment of the legs 2 and 3 of that as described with reference to FIGS. 1a to c.

In contrast to the detent spring 1 described above, the special single-layer leaf spring 11 has a U-shaped claw 12, which can be seen in FIG. 3b. Detent teeth 14 are provided on the legs 13 of the claw 12, which claw and clamp the single-layer leaf spring by means of the claw 12 or allow the leg 13 in the associated bore of the reveal frame installation frame.

The single-layer leaf spring 11 according to FIGS. 3a and b can, as can be seen from the development according to FIG. 3c, be formed in one piece in a simple manner, which not only reduces the costs for the preassembly of the detent spring in the soffit frame installation frame but also the costs overall can be kept low, since it is not necessary to provide a separate fastening bolt.

The individual steps of assembling the window insert in the associated reveal frame installation frame are to be explained in more detail with reference to FIGS. 4 to 6.

4 shows, in an upper part, a section through a plan view of the soffit frame installation frame 20 with a detent spring 1 fastened to the inside on a side wall. In the example shown in FIG. 4, the detent spring 1 is fixed in a reveal frame bore 21 by means of the fastening bolt 8 mentioned.

This fastening of the detent spring 1 by means of the fastening bolt 8 takes place in that the bolt is first passed through the bore 5 of the detent spring 1 and is then driven or pressed into the bore 21 with a hammer blow. Additional tools are not necessary for the pre-assembly of the detent spring 1 in the reveal frame 20 or in the bore 21.

In the section through a side view according to the lower part of FIG. 4, the installation position of the detent spring 1, here again designed as a single-layer leaf spring 11, can be seen.

The window insert 22, consisting of window sash 23 and frame 24, is now inserted into a lower recess 25 of the reveal frame 20 with a corresponding edge 26 in the direction of the arrow.

According to FIG. 5, the window insert 22 is again moved in the direction of the arrow in the direction of the installation position or locking position, a circumferential section of the frame 24 coming into active connection with the sliding surfaces 6 of the detent spring 1, and the detent spring 1 from a relaxed position by sliding along the Window insert 22 or the frame is moved into a retracted, tensioned position. During this movement, the entire window insert 22 is simultaneously centered laterally. A circumferential elastic seal 27 for sealing the window insert 22 to be inserted can also be seen in the upper part of FIG. 5.

It can be seen from FIG. 5 how the sliding surfaces of the detent spring, which are formed by the angled legs, are tensioned and pressed towards the reveal frame 20 or be moved. This pushing and moving continues until the detent spring 1; 11 can engage in a circumferential profile or a recess 28 of the window insert 22 with relaxation. Here now the detent spring 1; 11 with its locking edge 7 (FIGS. 1 a to c) in abutment with a corresponding inner edge of the profile or the recess 28 in the window insert 22. In this state, the circumferential seal 27 is press-fit between the abutment edge 29, which is on the inside of the frame on the reveal frame 20 is provided and related to the corresponding opposite surface of the frame 24 of the window insert 22. It can be seen that a tool, for example a screwdriver, can easily be inserted through a gap 30 between the soffit frame installation frame 20 and the window insert 22, which results on the interior side, with the aid of which the detent spring 1 or 11 in the direction of Reveal frame 20 can be compressed, whereby disassembly of the window insert 22 can be achieved.

Alternatively, but not according to the invention, a helical spring can be arranged in the bore 21 in the reveal frame 22, which has a section which is provided with a sliding surface.

In this case, the coil spring is compressed when moving the window insert towards the end or locking position and can relax when it reaches a corresponding position in relation to the profile or the corresponding recess in the window insert, which, just as in the exemplary embodiment with a leaf spring, reliably locks the Use of windows in the reveal frame with simultaneous possibility of interchangeability.

The helical spring expediently has a conical spiral which is partially pressed into the bore 21 is so that the detent spring designed as a helical spring can be preassembled or fastened without further fastening means.

All in all, a solution is shown in which it is no longer necessary to screw or loosen such a connection between the window insert and soffit frame for assembly or disassembly.

Overall, the described device for fastening a window insert or the like in a soffit frame installation frame leads to a much more effective assembly and disassembly, without the need for complex threading and producing a screw connection between the window and the frame. In the locking solution shown, the otherwise required additional delivery of locking means in the form of an accessory pack of screws, threaded sleeves and washers or the like can be omitted.

Claims (5)

1. Device for fixing a window assembly (22) or the like within an intrados installation frame (20), wherein the installation frame (20) comprises a stopping edge (29) that passes at least partially around the inside of the frame, as well as at least one bore (21), and wherein there is provided at least one catch spring (1) that can be fixed within the bore (21) on the inside of the intrados installation frame (20), so that when the window assembly (23) is inserted, the pressure on a sliding surface (6) of the catch spring (1) moves the latter out of an extended position, in which it is not under tension, into a retracted position in which it is under tension, and when the catch spring has reached an arrested position it can be at least partially relieved from tension and locked into a profile or a recess (28) in the window assembly (22), with the proviso that the catch spring (1) comprises a claw mechanism (12) formed integrally with the spring for the purpose of fixation in the bore (21),
   characterized in that
   the claw mechanism (12) has a U shape, at the arms (13) of which locking teeth (14) are provided.
2. Device according to Claim 1,
   characterized in that the catch spring (1) is a leaf spring (11) comprising one or multiple layers, with limbs (2; 3) that are symmetrical with respect to the claw mechanism (12), such that in the installed state and in the arrested position the limbs (2;3) are set at an angle with respect to a stopping edge of the profile or the recess (28) in the window assembly (22).
3. Device according to Claim 2,
   characterized in that the sliding surfaces (6) of the catch spring (11) are formed by the angled limbs (2;3), each of which comprises a component slanted with respect to the direction in which the window assembly (22) is installed.
4. Device according to one of the preceding claims,
   characterized in that for removal of the window assembly (22) by pressing the catch spring (11) back out of the arrested position, a gap (30) is provided on the inner side, between the installation frame (20) and the window assembly (22).
5. Device according to one of the preceding claims,
   characterized in that between the stopping edge (29) of the installation frame (20) and the opposed side of the window assembly (22) is disposed a circumferential, elastic seal (27) that is compressed when the window assembly (22) is inserted and the catch spring (11) or the window assembly is moved into the arrested position, as a result of which an additional radial arresting force acts between a catch edge (7) of the spring, which is in contact with a corresponding edge of the profile of the window assembly (22) or the recess (28) therein, and the site of fixation of the catch spring (11) within the bore (21) in the installation frame (20).