The present invention concerns a device for operating a closing mechanism of a window, in particular a side-hung window or a side-hung / tilting window, which device contains a handle and a rosette.
Door or window frames are generally equipped with a handle to simply open the window in a horizontal plane or to tilt the window in a vertical plane into a more or less restricted angular position.
When new buildings are erected or when new windows are placed, it would be interesting, in general, to be able to transport the windows and to provide them inside the building without the handles being present on these windows.
Thus, for example, during the conveyance of the windows without the hampering handles, the handles and/or the windows cannot be damaged, and a lot of space can be saved, so that it is possible to carry more windows per freight.
Handles that can be placed after the window is installed, are known, among others, from EP 0.754.826. These handles however can not be removed easily, for example to paint the window-frame, without damaging the window-frame and/or the casing.
From EP 0.193.081, it is known to remove the handle by inserting a tool in a hole in the casing, which is provided to this end. Such hole however is not esthetical and admits penetration of dirt into the casing.
Consequently the invention aims a device for operating the closing mechanism of a window, which does not show the abovementioned disadvantages.
To this aim the invention concerns a device for operating a closing mechanism of a window, in particular of a side-hung window or a side-hung / tilting window, which device comprises a handle and a rosette, and means, that are provided in the rosette which, in conjunction with means provided on the handle, make it possible to snap in the handle in the rosette, whereby said means provided in the rosette comprise a sliding piece that can be moved inside the rosette and that is provided with a lip, which lip extends outside through an opening in a cover plate positioned at the back of the device.
Said sliding piece is preferably provided with a part which can penetrate in a recess on the handle.
The lip in that way enables the withdrawal of said part of the sliding piece out of the recess so that the handle can be removed.
By providing said lip, the handle can be released via the interior of the window frame, for example via a recess provided in the side of the window frame.
The means provided on the handle can have a short shank provided with a recess, in particular a ring-shaped groove, and preferably also provided with a collar which is bevelled on the side of the far end of the short shank.
The means provided in the rosette preferably also contain elastic means, for example a spring, which pushes the sliding piece into the position in which it sticks in the recess with one part.
In the rosette can also be provided means, in particular a snap-in ring with a perimeter which is not round but for example square, co-operating with two leaf springs, which automatically put the handle, during normal use, in the horizontal or vertical position.
All these means which are part of the invention will be further described in the accompanying claims.
In order to better explain the characteristics of the invention, the following preferred embodiment of a device for operating a closing mechanism of a window according to the invention is described as an example only without being limitative in any way, with reference to the accompanying drawings, in which:
Figure 1 represents a handle 1 in which is provided, as usual, a pin 2 with a square section which co-operates with the closing mechanism (not represented) for closing or opening, namely turning or tilting the window.
The handle 1 contains a short shank 3 which partially supports the far end of the pin 2. This short shank 3 has a far end 4, a collar 5 which is bevelled towards the far end and a ring-shaped groove 6 between this collar 5 and a round base part 7 upon which is placed an intermediate ring 8.
The fixed finishing plate or rosette 9 consists of a longitudinal casing 10 which is sealed at the back by a cover plate 11 and which is provided with a centrally situated opening 10A.
The rosette 9 is fixed on the window post by means of fixing screws 12.
As shown in figure 1, a sliding piece 13 is situated in the cavity inside the casing 10 which can be moved in the longitudinal direction of the casing 10, namely vertically when the rosette 9 is fixed on the window, and which is pushed down by means of a spiral spring 14, into the position in which one part thereof is situated in front of the opening 10A.
According to the invention, the sliding piece 13 is provided with a lip 15, preferably at the top which extends backward through an opening 11A in the cover plate 11 outside the rosette 9.
Said sliding piece 13 according to the invention is represented in detail in figure 4 and consists of a longitudinal element which is provided with the lip 15 at the top and which has a cavity 17 for the spiral spring 14 and a central opening 16.
In order to guide the sliding piece 13, it has parts 18 on both sides of said opening 16, protruding towards the back, whereas it contains supporting blocks 19 at the top and at the bottom in which are provided recesses for the fixing screws 12.
In the central part of the rosette 9, between the parts 18, is also situated a snap-in ring 20 which has a square perimeter so to say and which works in conjunction with two laterally situated leaf springs 21.
The short shank 3 and the sliding piece 13 with the spiral spring 14 form co-operating means which make it possible to snap-in the handle 1 on the rosette 9.
In order to mount the handle 1 on the window, it is connected to the rosette 9 in the following manner.
The square pin 2 of the handle 1 is stuck through the central opening 10A of the rosette 9 and through a square opening 11B in the cover plate 11 into the closing mechanism.
The edge of the central opening 16 of the sliding piece 13 is hereby pushed up, against the action of the spiral spring 14, due to the bevelled edge of the collar 5.
The lip 15 of the sliding piece 13 will, just as the square pin 2, penetrate in the cavity of the sleeve of the window post. A part of the window latch is situated outside said sleeve on a narrow side edge of the window post. Thus, an opening must be provided in the side edge of the sleeve for this window latch.
When the handle 1 is in place, the edge of the central opening 16 of the sliding piece 13 snaps behind the collar 5 into the ring-shaped groove 6 of the short shank 3, so that the handle 1 is fixed to the window rosette 9 and consequently to the window post.
The basic part 7 is situated with the part of the intermediate ring 8 lying around it in the opening 10A of the casing 10.
The far end 4 of the short shank 3 is situated in the snap-in ring 20.
When the handle 1 is turned, the snap-in ring 20 will be taken along and push the laterally erected leaf springs 21 outward.
Thanks to the action of the leaf springs 21, the handle 1 will be forced either in the horizontal or in the vertical position.
The sliding piece 13 is designed such that said leaf springs 21 fit between the parts 18 protruding backward and the supporting blocks 19 of the sliding piece 13 without hindering the outward movement of said leaf springs 21.
If one wants to detach the handle 1 from the window post, one can move the sliding piece 13 up by means of the lip 15, against the action of the spiral spring 14, so that the edge of the central opening 16 of the sliding piece 13 is drawn out of the groove 6, as a result of which the handle 1 can be freely moved backward, away from the rosette 9 of the window.
The lip 15, which is situated inside the sleeve of the window post, can be operated via the opening in the side of the sleeve of the window post, which is required for the closing mechanism and which is made sufficiently large so as to also reach the lip 15. Of course, this is only possible when the window is turned open or tilted open.
Normally, the handle 1 is placed on the window for the first time after the window has been provided in the building, and the handle 1 is not detached anymore afterwards. In case of a defect or an incorrect mounting, it is always possible, however, to detach the handle 1 in a simple manner and to possibly replace it as described above.
Apart from the major advantage that the handle 1 no longer forms a hindrance during transport, the simple and quick mounting as well as the possibility to easily replace the handle 1 also offers a major advantage which is obtained thanks to the present invention.
When the handle 1 is mounted according to the invention or when the handle 1 is replaced, the risk of damaging this handle is excluded, which is not always the case with handles according to the present state of the art.
The invention is by no means limited to the above-described embodiments represented in the accompanying drawings; on the contrary, such a device for operating the closing mechanism of a window can be made in all sorts of variants while still remaining within the scope of the invention, as described in the accompanying claims.