The present invention relates to a fastening clip for fastening a finishing frame to a frame of a window, door or similar. It is known that windows with a frame composed of aluminium profiles for example are often provided with a finishing frame, such as a decorative frame of wood for example, to enhance the aesthetic appearance for example. Here the aluminium frame and the wooden frame of the finishing frame are made of profiles, after which both frames are fastened together.

In order to do this fastening, a plastic intermediate profile is known that is fastened over the entire periphery of the frame by means of a snap-on connector, after which the finishing frame can be snapped onto the intermediate profile. The necessary grooves are provided to this end, both in the frame and in the finishing frame.

Such an intermediate profile has the disadvantage that it is difficult to fasten and that the difference in the expansion factor between the wood and aluminium can only be accommodated to a limited extent. Because it is difficult to fasten, in most cases the finishing frame is mounted on the aluminium frame in the workshop beforehand and the assembled unit is supplied to the site. This has the disadvantage that the wooden frame is exposed to possible damage that can occur during the installation of the frame in a wall, which can damage the sturdiness of the finishing frame and/or the connection, and can also reduce the aesthetic appearance. Damage can also occur during the further construction phase and finishing of the wall and/or the building. For example due to the high moisture content from plastering walls or laying screed, which in combination with poor ventilation and a lack of heating can lead to mould formation on the wooden finishing frame or warping of the finishing frame.

On the other hand, a fastening technique is known based on a type of clip provided with bayonet catches that are placed in an undercut groove provided to this end in the profile, whereby the other profile with a corresponding undercut groove is placed against it and after which the clip is turned to fasten both profiles to one another making use of a suitable tool for example that can grip up to the clip between the frame and the finishing frame.

Although such clips are easy to install, this has the disadvantage that the profile or frame must be horizontal to prevent the clips sliding in the groove or falling out of the groove . Consequently the mounting is also done beforehand by fastening the frame to the finishing frame in the workshop before the frame is installed in a wall of a building or similar .

A additional disadvantage is that when the finishing frame is to be removed and the clips released, the orientation of the clips must be known, which means that the removal can be a time-consuming and difficult task.

The purpose of the present invention is to provide a solution to at least one of the aforementioned and other disadvantages by providing a fastening clip for fastening a finishing frame against a frame of a window or similar, whereby the frames are composed of profiles and whereby the fastening clip consists of a central part and two coaxial bayonet catches on either side of the central part, respectively one bayonet catch for affixing the fastening clip in an undercut groove provided to this end in the frame and the fastening thereof by rotating the fastening clip and one bayonet catch for affixing the fastening clip in an undercut groove provided to this end in the finishing frame and the fastening thereof by rotating the fastening clip, whereby the fastening clip is provided with means to temporarily hold the fastening clip upon being affixed in the groove of the frame or the finishing frame and with at least one radially-oriented wing on the central part that can act as a lever for turning the fastening clip. Undercut groove here means a groove in which the width of the opening is narrower than the width of the base of the groove . An advantage is that a fastening clip according to the invention cannot slide in the groove or fall out of the groove when the frame or the finishing frame in which the clip is affixed is not horizontal. As a result it is possible to fasten a finishing frame to a frame of a window or similar already built into a wall by affixing the fastening clips in a groove of the frame or the finishing frame. Another advantage is that the fastening clip can easily be rotated by means of at least one radially-oriented wing.

Preferably the aforementioned means are formed by a snap-on connector .

An advantage is that a snap-on connector enables a fast and simple temporary secure connection of the fastening clip to a frame by snapping the fastening clip into the groove provided to this end.

In a preferred embodiment at least one. wing is constructed as a slat that is affixed radially to the central part and which is provided with at least one notch in one of its radially-oriented edges at its furthest end, whereby the wing is preferably provided with two notches opposite one another in the transverse direction. This has the advantage that to turn the fastening clip use can be made of a tool such as a screwdriver that fits in the notch, whereby by exerting a force on the wing with the tool the fastening clip can be turned.

The force can also be exerted on the wing by hand, without using a tool or similar. In the most preferred embodiment there are two radial wings that extend diametrically opposite one another.

This has the advantage that the fastening clip can be constructed symmetrically, such that when releasing the fastening clip again, the orientation of the fastening clip does not need to be known.

The invention also comprises a method for fastening a finishing frame against a frame of a window or similar, making use of fastening clips consisting of a central part provided with two coaxial bayonet catches on either side of the central part, with means to temporarily hold the fastening clip in the frame or the finishing frame and at least one radially-oriented wing on the central part, whereby the method comprises the following steps:

- the affixing of fastening clips in a groove provided to this end in one of the two frames with at least one wing transverse to the groove in such a way that the clips are temporally held by the aforementioned means;

- the affixing of the other frame provided with a groove, ensuring that the frame to be affixed is affixed with its groove over the bayonet catches of the already affixed fastening clips;

- the mutual securing of both frames by turning the fastening clips around the axis of the bayonet catches by acting on at least one wing to turn it to a position parallel to the longitudinal direction of the grooves.

Such a method will enable a finishing frame to be easily and rapidly fastened to a frame of a window or similar, whereby there is also no need for special tools to secure the fastening clips.

An additional advantage is that such a method can also be applied when the frame and/or the finishing frame is not horizontal. As a result, the method can also be applied when the frame is already installed in a wall or similar, for example .

The invention also relates to a window consisting of a frame with a finishing frame fastened thereto, whereby the finishing frame is fastened to the frame by means of one or more fastening clips according to one of the previous claims, whereby the central parts of the fastening clips extend between both frames and are fastened thereto by the bayonet catches on either side of the central part extending respectively in a groove of the connected frames in a position whereby the fastening clips are turned to a position whereby the wings extend essentially parallel to the respective frames. With the intention of better showing the characteristics of the invention, a few preferred embodiments of a fastening clip according to the invention for fastening a finishing frame against a frame, a method thereby applied, and a window equipped with such a fastening clip are described hereinafter by way of an example, without any limiting nature, with reference to the accompanying drawings, wherein: figure 1 schematically shows a perspective view of a fastening clip according to the invention;

figure 2 schematically shows a perspective view according to the arrow P2 of figure 1;

figure 3 schematically shows a frame in which fastening clips according to the invention are affixed;

figure 4 schematically shows a cross-section according to the line Vi-VI of figure 3;

figures 5 and 6 schematically show the fitting and fastening of a finishing frame to the frame.

The fastening clip 1 schematically shown in figures 1 and 2 essentially comprises a central part 2 with two radial wings 3 that extend diametrically opposite one another.

The central part 2 is disk shaped and is provided with a bayonet catch 4,5 on either side.

Each bayonet catch 4, respectively 5, is formed by a journal 6 with an asymmetrically widened head 7, respectively 8, with a length A, respectively B, and a width C, respectively D, along two radial directions X-X' and Y-Y' transverse to one another.

In this case the head 7,8 is rectangular with rounded corners, whereby one head 8 is provided with a constriction of the width D in the form of recesses 9 in opposite edges 10.

One of the bayonet catches 5 is provided with a snap-on connector 11, which in this case is formed by two elastic hooks 12 with a foot 13 and a hook-shaped end 14.

The hooks 12 are provided in the width D of this bayonet catch on either side thereof, whereby their foot 13 is affixed to the central part 2 and the hook-shaped end 14 can move in the direction of the width Y-Y' of the bayonet catch 5.

The hook-shaped ends 14 can move elastically between a rest position whereby the hooks 12 protrude past the width D of the head 8 of the bayonet catch 5, as shown in figure 2, and a pressed-in position whereby the hooks 12 are pressed in the aforementioned recesses 9. The wings 3 are constructed as a slat that is affixed radially to the central part 2, whereby the thickness E of the wings 3 is the same as the thickness F of the central part 2. Each slat 3 is provided at its furthest end 15 in its radially-^oriented edges 16 with two notches 17 opposite one another in the transverse direction X-X' , whereby in this case the furthest end 15 is constructed as a rounded head 18. The notches 17 are defined by a base 19 and two sidewalls 20, 21. One sidewall 20 is transverse to the longitudinal direction Y-Y' of the wing, while the other sidewall 21 is oriented obliquely to the longitudinal direction Y-Y' , The oblique sidewall 21 extends obliquely from the base 19 to the edge 16 in the direction of the central part 2, as shown in figures 1 and 2.

The fastening clip 1 can be used to fasten a finishing frame against a frame 22, as shown in figure 3 for example.

The frame 22 of figure 3 is composed of profiles 23 that are connected together at their ends in a suitable way, whereby the frame 22 can be built into an opening of a wall or similar and whereby in this case the frame 22 is made of aluminium.

As shown in figure 4, the profiles 23 are composed of two half shells 24 and 25, respectively an inner shell 24 that is oriented towards the inside of the building, and an outer shell 25 that is oriented towards the outside of the building.

The two half shells 24, 25 are connected together by means of insulating courses 26 that ensure a thermal break between the inner shell 24 and the outer shell 25. In the frame 22, more specifically in the inner shell 24, an undercut groove 27 is provided that extends as it were over the entire periphery of the frame 22.

The groove 27 has an opening 28 whose width G measured perpendicularly to the longitudinal direction of the groove 17 is less than the width H of the base 29 of the groove 27 measured in the same direction, due to the groove 27 being provided with overhanging edges 30 at the level of the opening 28.

Hereby the width G of the opening 28 is greater than the width D of the head 8 of the bayonet catch 5 and smaller than the length B of the head 8.

The use of the fastening clips 1 as shown in figures 1 and 2 for fastening a finishing frame against a frame 22 is very simple and as follows, and is shown in figures 3 to 6.

As shown in figure 3, a number of fastening clips 1, in this case ten, spread evenly over the entire periphery of the frame 22 are affixed in the groove 27 provided to this end in the frame 22.

To this end, the bayonet catch 5 is pressed against the groove 27, whereby the wings 3 extend transversely in the longitudinal direction of the groove 27, such that the width D of the head 8 of the bayonet catch 5 extends in the direction of the width G of the opening 28 of the groove 27. The elastic hooks 12 will be moved to the pressed-in position, such that the head 8 of the bayonet catch 5 can be pressed in the groove 27 as the width D of the head is smaller than the width G of the opening 28.

When the head 8 is in the groove 27, the elastic hooks 12 will again move to the rest position, whereby the hook- shaped ends 14 will be secured behind the overhanging edges 30 in order to temporarily hold the fastening clip 1 in the groove 27 of the frame 22.

In the next step a finishing frame 31 is affixed. In this case the finishing frame 31 is affixed on the inside the building, against the inner shell 24. However, it is not excluded that a finishing frame 31 is affixed against the outer shell 25, by providing the frame 22 in the outer shell 25 with an undercut groove 27.

The finishing frame 31 can be a decorative frame or similar made of wood and can also be constructed from profiles.

The finishing frame 31 is also provided with an undercut groove 32 with overhanging edges 30' that extends over the entire periphery of the finishing frame 31.

Here the width I of the opening 33 of the groove 32 is greater than the width C of the head 7 of the bayonet catch 4 and smaller than the length A of the head 7. When affixing the finishing frame 31 it is ensured that it is affixed with its groove 32 over the bayonet catches 4 of the fastening clips 1, as shown in figure 5.

In a last step both frames 22, 31 are secured together by turning the fastening clips 1 around the axis of the bayonet catches 4, 5 so that the wings 3 extend parallel to the longitudinal direction of the grooves 27, 32, as shown in figure 6.

This is realised by turning the wings 3 by approximately a quarter turn by exerting a force on at least one of the wings 3 of the fastening clip 1.

This can be done by hand, but it is also possible that use is made of a screwdriver or another tool, by letting it engage in a notch 17 and exerting a force on the wing 3 with the aid of the tool.

Due to the oblique sidewall 21 it will be possible to place the tool at an angle in the notch 17, whereby the sidewall 20 that is oriented transversely to the longitudinal direction Y-Y' of the wing 3 will prevent the tool from being able to slip out of the notch 17.

By turning the fastening clip 1, the bayonet catches 4,5 concerned are rotated around their axis, such that the length A, respectively B, of the head 7, respectively 8, extends in the direction of the width of the groove 32, respectively 27. As a result the head 7, 8 will grip behind the overhanging edges 30, 30' , such that the fastening clips 1 are securely connected to the frames 22, 31 by means of the bayonet catches 4, 5, and in this way ensure the fastening of the finishing frame 31 to the frame 32.

Although in the example described above the fastening clips 1 were affixed and temporarily secured in the frame 22, it is not excluded that the fastening clips 1 are affixed and temporally secured in the finishing frame 31, before affixing the finishing frame 31 against the frame 22.

It goes without saying that in this case the bayonet catch 4 that is intended to be affixed in the groove 32 of the finishing frame 31, is provided with a snap-on connector 11 in order to make it possible to temporarily secure the fastening clips 1 in the finishing frame 31.

It is hereby possible that the snap-on connector 11 is absent on the other bayonet catch 5 or that a snap-on connector 11 is provided on both sides of the fastening clip 1.

It is also clear that the means to temporally hold the fastening clip 1 upon being affixed in the groove 27, 32 of the frame 22 or the finishing frame 31 can also be constructed in a different way than with a snap-on connector 11. Although in the example described above, a pane of glass or similar is not yet affixed in the frame 22 before the fastening clips 1 are affixed, it is clear that the pane of glass can also be present in the frame 22 before the fastening clips 1 are affixed in the frame 22. The present invention is by no means limited to the embodiments described as an example and shown in the drawings, but a fastening clip 1 according to the invention for fastening a finishing frame 31 against a frame 22, a method thereby applied, and a window equipped with such a fastening clip 1 can be realised in different variants, without departing from the scope of the invention.