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(11) | EP 2 738 327 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Window fittings and window |
| (57) A window fitting (10) comprises an anchorage device (11) and a locking latch (12)
that is turnable in relation to it. The anchorage device (11) has at least one fixing
hole (32) to fix the anchorage device (11) to an inner sash (53, 1157, 52, 1203) of
a window (50). The locking latch (12) has a latching device (129) suitable for inserting
in a groove (551) in an outer sash (55, 1158, 54, 1205) of a window (50). The locking
latch (12) is attachable or attached to the anchorage device (11) in such a way that,
when the locking latch (12) is attached to the anchorage device (11), the locking
latch (12) is turnable in relation to the anchorage device (11). The patent application contains also a parallel independent patent claim for a window comprising at least one window fitting (10). |
Field of the invention
Background art
[0003] The inner space of a window comprising first and second separate sashes is exposed, due to the air circulation needed in the window, to moisture and dirt. In order to wash the inner space of such a window, there is a need for the window to be openable between the first and second sashes.
[0004] The conventional solution used particularly in the Nordic countries to make the window's inner space openable is to attach the window's outer sash and inner sash to the window's frame by separate hinges. The outer and inner sashes are each equipped with latch mechanisms by means of which the outer sash's locking in the frame is separately openable from one edge of the window, and the inner sash's locking in the frame is separately openable from the same edge. The outer sash and the inner sash are each hinged from the opposite edge. By means of the hinge, the light aperture of the outer sash and the light aperture of the inner sash can then be turned for washing.
[0005] In the case of the tilt and turn windows (Drehkippfenster in German) with at least two sashes that are used particularly in Central Europe, a different type of solution is generally used to open the window for washing the inner space. Tilt and turn windows generally include a turnable handle such that when it is in the first position the window is closed. When the handle is turned to the second position, the window can be tilted (for ventilation for example) by turning the upper edge of the window around an axis at the point of the lower edge of the window towards the room space or away from it. When the handle is turned to the third position, the window can be turned open (e.g. for window washing or more effective ventilation, or for cases when the window is used as an exit) by turning the window around a vertical axis located in the edge of the window usually by 90 degrees or more.
[0006] If the inner and outer sashes are hinged to the window frame, both are generally locked either to the frame or to the inner sash (which is particularly the case with ventilation windows). If the outer sash is hinged fast to the inner sash, it is also always locked to the inner sash.
[0007] One way to enable the washing of the inner space of such a tilt and turn window is an arrangement in which the outer sash and one edge of the inner sash are locked relative to each other by means of a lever that is fixed by screw to the first sash and extends to a cavity in the second sash and, while in this cavity, mechanically prevents the separation of the outer and inner sashes from each other. When the lever is turned to another position, the lever-side edges of the outer sash and inner sash are freed and they can then be turned with respect to their mutual hinging in such a way that the inner space of the window is washable. Despite its simplicity, the arrangement is awkward. When the screw is tight, it is difficult to turn the lever. On the other hand, if the screw is left loose, the lever is not reliably attached and it may even fall off.
Purpose of the invention
[0008] The purpose of the invention is to facilitate the washability of windows having at least two sashes. This purpose can be fulfilled by using a window fitting in accordance with the first independent patent claim and by using a window in accordance with the second independent patent claim.
Advantages of the invention
[0010] According to the first aspect of the invention, a window fitting comprises an anchorage device and a locking latch that is turnable in relation to it. The anchorage device has at least one fixing hole to fix the anchorage device to the inner sash of a window. The locking latch has a latching device suitable for inserting in a groove in the outer sash of a window. The locking latch is attachable or attached to the anchorage device in such a way that, when the locking latch is attached to the anchorage device, the locking latch is turnable in relation to the anchorage device.
[0011] Using such a window fitting it is possible to improve the washability of a window with at least two sashes, since the tightness by which a window fitting of our invention is fixed to a window sash no longer necessarily influences directly the rigidity of the window fitting, unlike the afore-mentioned solution. Thus it is possible to get a relatively easily openable window fitting to stay in place better.
[0012] When a window fitting's anchorage device comprises at least one anchorage latch which is bent or angled with respect to the base, and which is equipped with rounding on the lower surface side of the base, it is possible to fix the window fitting to a sash with one or more fixing screws or other attachment means. When anchorage of the window fitting is achieved by means of an anchorage latch, there is no need, in order to stabilize the fitting, to put pins in the fitting's anchorage device or to drill separate holes in the frame for the pins. This not only provides simpler possibilities to make the tools (e.g. casting molds) needed for implementing a window fitting, but also eases the attachment of window fittings at the window factory by minimizing the quantity of drill holes needed in the sashes.
[0013] When a window fitting's latching device is fixed to a support arm extending from a support plate in the window fitting, or is integrated with this into a single piece, it is possible to make the actual window fitting smaller, while also allowing even the locking of a thick outer sash to an inner sash.
[0014] When a window fitting also has an attachment ring that is attached to a support plate or that is integrated with this into a single piece, the locking latch's hinging can be implemented by using the anchorage device. This enables an extremely simple way of implementing the window fitting.
[0015] When a window fitting has mechanical coding between the locking latch and the anchorage device in order to increase the force needed to turn away from the open and/or closed positions, it is possible to better ensure the remaining of the window fitting in the open position or the closed position, since in this way it is possible to reduce the risk of being unintentionally turned.
[0016] When the latching device in the window fitting has a sled runner- or shoe-like shape, it is possible for the latching device to use the width and/or depth of the attachment groove or even the whole measurement tolerance of the sash as an equalizer. By means of the window fitting, it is possible to better eliminate the clatter of a sash deriving from a possible shape variation of the sash in the open position and/or the tilting position.
[0017] When the latching device in the window fitting has a spur on the opposite edge of the sled runner- or shoe-like shape, it is possible to use the window fitting extremely well with a slippery outer sash. By this I mean for example that the outer sash would be aluminum, and in particular such a case that the aluminum would also be painted at the groove. It is difficult to get the latching device to stay tightly in such a painted groove without using a spur.
[0018] A window according to a second aspect of the invention has an inner sash delimiting a light aperture and an outer sash delimiting a light aperture. In addition, the window comprises a window fitting according to any of the above-presented aspects, the anchorage device of which is installed in an outer edge of an inner sash in such a way that:
- a) the locking latch of the window fitting is turnable in the first direction to a locking position in a groove in the outer edge of the outer sash, in which case the inner and outer sashes are locked to each other, and that:
- b) the locking latch of the window fitting is turnable in the opposite direction away the groove in the outer edge of the said outer sash to the open position, in which case the inner and outer sashes are released with respect to each other allowing the extending of the inner space between the inner and outer sashes for the purpose of washing the surfaces of the window's inner space.
[0019] A thus implemented inner space of the window can be relatively easily cleaned, for the window can very easily be put in the open position and on the other hand also in the locked position after washing. Depending on the shape of the window fitting and the sash this is possible even without separate tools, especially in the case when the shape of the outer and inner sashes makes it possible for a fingertip or fingernail end to be inserted under the locking latch (particularly under the support arm and/or the support plate).
[0020] When the recess in the window is a groove defined by the overlaps in the outer edge of the outer sash, it is possible in the window to use even more window fittings to achieve better locking and/or force transfer without making extra cavities in the outer sash.
[0021] When the latching device in the window fitting has a sled runner- or shoe-like shape and the dimensions of the groove in the outer sash correspond to the dimensions of the spur- or shoe-like shape of the fitting's latching device so that the latching device's spur- or shoe-like shape acts in the manner of a barb, wedge or claw and increases the force needed to remove the latching device from the groove, it is possible to better ensure the equality and/or operability of the above-mentioned tolerance in different temperatures.
[0022] When in addition the window fitting has a spur on the opposite edge of the sled runner- or shoe-like shape and the groove in the outer sash has a retention lip to accommodate the fitting's spur and to increase the force needed to turn the locking latch away from the closed position, it is possible to better ensure that the window fitting stays locked, even in the case of the above-explained slippery outer sash.
[0023] When the window is an openable and/or tiltable window, and when the window fitting or fittings are configured in their locking position to keep the inner and outer sashes closed when the window is opened and/or tilted, and in their open position to allow the cleaning of the window from such areas inside the window which are opposite each other when the inner and outer sashes are locked to each other, it is possible by means of the window fitting to bear also the forces between the inner and outer sashes and appearing in the opening or tilting of the window. For this reason it is possible to reduce the forces exerted on other structural parts of the window, and correspondingly these can be implemented by using thinner structures or such materials that do not require durability to as great forces and which are often significantly more economical.
[0024] When the height of a window fitting or fittings is adapted to correspond to the distance between the inner and outer sashes in order to at least partially transfer the stresses, particularly wind pressure, exerted on the window's outer sash and/or the window panes of the outer sash, via the window fitting or fittings to the inner sash, it is possible to reduce the stress loading exerted on the outer sash's hinging.
[0025] When a window in which the inner sash is supported on the frame by means of hinges is adapted to transfer to the inner sash the stresses transferred via the window fitting or fittings to the frame mainly by way of the hinges and locking, it is possible to transfer almost the whole dynamic force load exerted on the window to the frames via the hinges. In that case, from the force transfer point of view, it is adequate to implement the inner sash's frame hinging sufficiently strongly. The outer sash's hinging to the inner sash can be implemented significantly more lightly.
[0026] When a window is a tilt and turn window or a side-hinged window, and when the window fitting or fittings are configured to bring the outer sash with them when tilting or opening the window, it is possible, by means of the window fitting, and during tilting or opening of the window, to transfer the forces exerted on the inner sash to the moving of the outer sash. Thus the forces exerted on the window's hinges can be decreased.
List of drawings
[0027] The following is a more detailed description of the fitting and the window, with the aid of the embodiments presented in the accompanying drawings FIG 1 - 12. The drawings show:
- FIG 1
- a fitting in the locking position viewed from one direction;
- FIG 2
- the fitting of FIG 1 viewed from another direction;
- FIG 3
- the fitting of FIG 1 viewed from below the anchorage device;
- FIG 4
- the fitting of FIG 1 viewed from above or below;
- FIG 5
- an opened double-sashed window in which the inner and outer sashes are turned away from each other and the fitting is in the open position, so that the window's inner space can be washed;
- FIG 6
- a cross section of the mutual relationship between the fitting's anchorage device and the edge of the inner sash;
- FIG 7
- opening and closing of the fitting of the window shown in FIG 5, resulting in the first and second sash being fixed to each other or released from each other;
- FIG 8
- the window shown in FIG 5 with the first and second sash fixed to each other;
- FIG 9
- a perspective view of the anchorage device;
- FIG 10
- a perspective view of the locking latch;
- FIG 11
- a horizontal section of the window of FIG 8 installed in a window frame, shown at the point of the hinge, in which the outer sash's hinge and the window fitting are visible; and
- FIG 12
- a vertical cross section of the window of FIG 8 installed in a window frame.
Detailed description
[0029] FIG 1 - 4 present window fitting 10 comprising anchorage device 11 and locking latch 12. Anchorage device 11 and locking latch 12 are presented separately in perspective views in FIG 9 and 10 respectively.
[0030] Anchorage device 11 comprises one or more anchorage latches 111, joined by means of optional corner rounding 112 to anchorage device 11, and in particular to base 117 of anchorage device 11. In the way that is apparent from FIG 9, the interior of anchorage device 11 can be implemented as attachment tongues 113, each of which can have at least one barb, retention lip or projection 119. Anchorage device 11 also preferably has one or more codes 31 to indicate the mutual orientation of anchorage device 11 and locking latch 12, in particular so that the open position and/or locking position of locking latch 12 is unambiguously apparent.
[0031] Attachment tongues 113 enclose throat 114 and are separated by gap 115. The bottom of anchorage device 11 has at least one hole 32 for attachment to an inner sash. Attachment is most advantageously achieved by screws, nails or corresponding.
[0032] At the point where anchorage latch or latches 111 are joined to base 117 in anchorage device 11 there is preferably anchorage rounding 118. The purpose of anchorage rounding 118 is to ensure that the shape of anchorage latch 111 and the shape of base 117 exactly fit the shape of the edge of the inner sash.
[0033] Locking latch 12 comprises attachment ring shell 126, which is joined to support plate 121. Extending from support plate 121 is support arm 122 which leads via optional corner rounding 123 to latching device 129. The shape of latching device 129 is preferably such that it forms latch 124, in which case we are referring to a shape like a sled runner or shoe. Between latch 124 and support arm 122 is optionally latch groove 125.
[0034] Window fitting 10 is attached in the manner presented above preferably by screw 1180 to one inner sash of window 50, e.g. to right-hand inner sash 53 as shown in FIG 11.
[0035] One window 50 can also have more than one window fitting 10 on the same edge, for example so that for each opposing hinge (right-hand inner sash - left-hand inner sash; upper inner sash - lower inner sash) there is one window fitting 10 and preferably also at the same point.
[0036] In the example of FIG 11, the hinges of window 50 are between left-hand window frame 1102 and left-hand inner sash 1157. In such a case, window fittings 10 can also be used to lock lower inner sash 52 and lower outer sash 54 and/or to lock upper inner sash 1203 and upper outer sash 1205.
[0037] As shown in FIG 6, base 117 follows, particularly at the point of at least one anchorage latch 111, and due to corner rounding 112 and above all to anchorage rounding 118, the external edge of right-hand inner sash 53, which can also be indented, in the manner apparent from FIG 6.
[0038] In the way apparent from the example of FIG 5, fitting 10 is now installed in right-hand inner sash 53 next to the edge. In the example of FIG 5, window 50 is open; in other words, light aperture 56 and its surrounding sashes are turned away from the sashes surrounding light aperture 51. Inner space 1190 is thus washable.
[0039] The operating principle of window fitting 10 is apparent in FIG 7 when the sashes surrounding light aperture 56 are turned towards the sashes surrounding light aperture 51. Locking latch 12 of window fitting 10 can be turned to the locking position in the direction of arrow P and to the open position in the direction of arrow Q.
[0040] Now it can also be observed that, in the situation of FIG 8, when locking latch 12 is in the locking position, latching device 129 is in groove 551 between overlaps 552, 553 in right-hand outer sash 55, and remains there. The window's inner space 1190 is thus closed.
[0041] With the aid of code 31, locking latch 12 better remains in the locking position, i.e. in the situation of FIG 8. If cross coding is used, it is possible with the aid of code 31 to also better keep locking latch 12 in the open position, i.e. in the situation of FIG 5.
[0043] The operation of window fitting 10 is presented in more detail in the following, by means of the cross sections presented in FIG 11 and 12.
[0044] When in window 50 the recess meant for latching device 129 of locking latch 12 is groove 551, defined by overlaps 552, 553 in the outer edge of the outer sash, it is possible in window 50 to use even more window fittings to achieve better locking and/or transfer of forces without making additional cavities in the outer sash. One or more window fittings 10 are fixed to merely one or more inner sashes, and in the case of FIG 11 and 12 to only the right-hand inner sash. But, in addition to or instead of this, it would be possible to fix one or more window fittings 10 to other inner sashes as well, for example to lower inner sash 52, upper inner sash 1203, or left-hand inner sash 1157.
[0045] Latching device 129 in window fitting 10 of window 50 is advantageously shaped like a sled runner or shoe and the dimensions of groove 551 in the outer sash correspond to the dimensions of the spur- or shoe-like shape of the latching device of window fitting 10, so that the spur- or shoe-like shape of latching device 129 acts as a barb, wedge or claw, and increases the force needed to remove latching device 27 from groove 551.
[0046] Window fitting 10 can, in addition to this, have spur 41 on the opposite edge of the sled runner- or shoe-like shape. In that case, retention lip 1199 can be arranged for groove 551 in the outer sash. In that case, spur 41 of the co-acting holding unit shape (in particular due to corner rounding 123 and claw 124) of window fitting 10 is pressed under retention lip 1199 and is accommodated there. Thus, it is possible to increase the force needed to turn the locking latch of holding unit 129 away from the closed position.
[0047] The width d of latching device 129 is preferably chosen so that, with respect to the width e of groove 551, d ∈ [e-Δe, e]. In practice, Δe can be between [0; 0.2 mm]. This ensures sufficient gripping of latching device 129 in groove 551 even when the outer sash, as well as groove 551 of the outer sash, have been painted after making the groove, in which case groove 551 can even become quite tight for latching device 129.
[0049] Window 50 comprises an insulating glass unit comprising inner glass pane 1111 of the inner sash, outer glass pane 1112 of the inner sash, as well as insulating glass package mass 1122 between them and a spacer. The insulating glass unit is attached to the sash by means of padding 1121 and glazing beads 1125. The inner sash comprises left-hand inner sash 1157, right-hand inner sash 53, upper inner sash 1203 and lower inner sash 52.
[0050] In addition, window 50 comprises glass pane 1113 of the outer sash, which is attached to the outer sash by means of glazing beads 1126. The outer sash comprises left-hand outer sash 1158, right-hand outer sash 55, upper outer sash 1205 and lower outer sash 54.
[0051] The outer sash of window 50 is hinged to the inner sash by means of hinges 1160 on one or two sides, generally on one side which is the same side where the inner sash is hinged to the frame (above, below, left or right, or possibly on two sides, e.g. most usually in the case of tilt and turn windows). Tilt and turn windows are also generally hinged to the frame on one side (left or right). The tilt position is managed by means of different locking points and hinges acting in two directions. Thus the lower frame does not usually have hinges.
[0052] One or more window fittings 10 are used on the side opposite the hinging side, or alternatively on the side opposite and the side or sides next to the hinging side, depending on the size of window 50.
[0053] The outer sash of window 50 is implemented most advantageously so that left-hand outer sash 1158, right-hand outer sash 55, upper outer sash 1205 and lower outer sash 54 have the same cross-section. The corners of sashes made from aluminum or other metals or from plastic are sawed most advantageously in a miter box. Wooden sashes are doweled (possibly in a miter box, but not necessarily). The outer sashes can be wood, plastic or some other material. A technically extremely advantageous embodiment is that the outer sashes are aluminum. The aluminum can be painted or otherwise surface-treated.
[0054] The inner sash is hinged to frame 1102. The frames comprise left-hand frame 1102, right-hand frame 1101, upper frame 1201 and lower frame 1202. The hinging between the inner sash and the frame is not shown in FIG 11 and in FIG 12 for the reason that the hinging can be implemented by using several different, but nevertheless well-known, hinges. For example, tilt and turn windows have a different kind of hinging than side-hinged windows. The same applies also to the locking system by which the attachment, occurring by means of hinges between the inner sash and the frame, is locked.
[0055] Aluminum window frame profile 1140 can be put between the outer sash and the frame. Instead of aluminum window frame profile 1140, plastic or some other suitable material can be used. Aluminum window frame profile 1140 is fixed to the frame by means of fixing points 1146. Aluminum window frame profile 1140 has fixing 1142 for sealing 1141 on its sides facing the outer sash.
[0056] The height h of the structure of window fitting 10 is chosen so that it corresponds to the distance between the outer and inner sashes. Thus each window fitting 10 conveys the forces, that are coming to the glass pane of outer sash 1113 and to the outer sash, to the inner sash where it is attached.
[0057] Window fitting 10 is relatively easily openable by finger if there is a finger-size gap between the outer and inner sashes or, for example, when the dimensions of groove 551 permits, the finger can be moved up or down depending on the installation direction of the fitting 10, and the fitting 10 can be turned in the direction of arrow Q.
[0058] The "thickness" deriving from the height h of the structure of window fitting 10 is preferably the same as the free play of the hinge side of window 50. In that case the outer sash is at the same, or essentially the same, distance from the inner sash on both sides.
[0059] Window fitting 10 can be manufactured from plastic or metal. In terms of material properties, however, it is advantageous if window fitting 10 is made of polyoxymethylene (POM) or polyamide (PA) [particularly Nylon (R), i.e. polyhexamethylene adipic acid amide] or of material containing either or both of these.
[0060] The invention should not be understood as being limited only to the attached claims, but should be understood as including all their legal equivalents.
List of reference numbers:
[0061]
| P | towards the locking position |
| Q | towards the open position |
| R | axis of rotation |
| h | structure height |
| d | latching device width |
| e | groove width |
| 1 | inner side |
| 2 | outer side |
| 10 | window fitting |
| 11 | anchorage device |
| 12 | locking latch |
| 31 | code |
| 32 | hole |
| 41 | spur |
| 50 | window |
| 51 | light aperture |
| 52 | lower inner sash |
| 53 | right-hand inner sash |
| 54 | lower outer sash |
| 55 | right-hand outer sash |
| 56 | light aperture |
| 111 | anchorage latch |
| 112 | corner rounding |
| 113 | attachment tongue |
| 114 | throat |
| 115 | gap |
| 117 | base |
| 118 | anchorage rounding |
| 119 | barb |
| 121 | support plate |
| 122 | support arm |
| 123 | corner rounding |
| 124 | latch |
| 125 | latch groove |
| 126 | attachment ring shell |
| 129 | latching device |
| 531 | edge |
| 551 | groove |
| 552, 553 | overlap |
| 1101 | right-hand window frame |
| 1102 | left-hand window frame |
| 1111 | inner glass pane of inner sash |
| 1112 | outer glass pane of inner sash |
| 1113 | glass pane of outer sash |
| 1121 | padding |
| 1122 | insulating glass package mass |
| 1123 | spacer |
| 1125 | glazing bead |
| 1126 | glazing bead |
| 1140 | aluminum window frame profile |
| 1141 | sealing of aluminum window frame profile |
| 1142 | fixing to the sealing in the aluminum window frame profile |
| 1146 | fixing point to the window frame |
| 1157 | left-hand inner sash |
| 1158 | left-hand outer sash |
| 1160 | hinge |
| 1180 | fixing screw |
| 1190 | inner space |
| 1199 | retention lip profile |
| 1201 | upper window frame |
| 1202 | lower window frame |
| 1203 | upper inner sash |
| 1205 | upper outer sash |
1. A window fitting (10) comprising an anchorage device (11) and a locking latch (12)
that is turnable in relation to it,
- in which the anchorage device (11) has at least one fixing hole (32) to fix the anchorage device (11) to an inner sash (53, 1157, 52, 1203) of a window (50);
- in which the locking latch (12) has a latching device (129) suitable for inserting in a groove (551) in an outer sash (55, 1158, 54, 1205) of a window (50); and
- in which the locking latch (12) is attachable or attached to the anchorage device (11) in such a way that, when the locking latch (12) is attached to the anchorage device (11), the locking latch (12) is turnable in relation to the anchorage device (11).
2. A window fitting (10) according to claim 1, in which the anchorage device (11) comprises
at least one anchorage latch (111) which is bent or angled with respect to a base
(117), and which is equipped with rounding (118) on the lower surface side of the
base (117).
3. A window fitting (10) according to claim 1 or 2, in which the latching device (129)
is fixed to a support arm (122) extending from a support plate (121) in the fitting
(10), or is integrated with this into a single piece.
4. A window fitting (10) according to claim 3, which also has an attachment ring (126)
that is attached to the support plate (121) or is integrated with this into a single
piece.
5. A window fitting (10) according to any one of claims 1 - 4, which has mechanical coding
(31) between the locking latch (12) and the anchorage device (11) in order to increase
the force needed to turn away from the open and/or closed positions.
6. A window fitting (10) according to any one of claims 1 - 5, whose latching device
(129) has a sled runner- or shoe-like shape.
7. A window fitting (10) according to claim 6, in which the latching device (129) has
a spur (41) on the opposite edge of the sled runner- or shoe-like shape.
8. A window (50), which has an inner sash (53, 1157, 52, 1203) delimiting a light aperture
(51) and an outer sash (55, 1158, 54, 1205) delimiting a light aperture (56), and
which also comprises a window fitting (10) according to any one of the above claims
1 - 7, the anchorage device (11) of which is installed in an outer edge of the inner
sash (53) in such a way that:
a) the locking latch (12) of the window fitting (10) is turnable in the first direction (P) to a locking position in a groove (551) in the outer edge of the outer sash (55, 1158, 54, 1205), in which case the inner sash (53, 1157, 52, 1203) and the outer sash (55, 1158, 54, 1205) are locked to each other, and
b) the locking latch (12) of the window fitting (10) is turnable in the opposite direction (Q) away the groove (551) in the outer edge of the said outer sash (55) to the open position, in which case the inner sash (53, 1157, 52, 1203) and the outer sash (55, 1158, 54, 1205) are released with respect to each other allowing the extending of the inner space (1190) between the inner sash (53, 1157, 52, 1203) and the outer sash (55, 1158, 54, 1205) for the purpose of washing the surfaces of the inner space (1190) of the window (50).
9. A window (50) according to claim 8, whose recess (551) is a groove (551) defined by
the overlaps (551, 553) in the outer edge of the outer sash (55, 1158, 54, 1205).
10. A window (50) according to claim 9, in which the window fitting (10) is according
to claim 6 and the dimensions of the groove (551) in the outer sash (55, 1158, 54,
1205) correspond to the dimensions of the spur- or shoe-like shape of the latching
device (129) of the window fitting (10), so that the spur- or shoe-like shape of the
latching device (129) acts in the manner of a barb, wedge or claw and increases the
force needed to remove the latching device (129) from the groove (551).
11. A window (50) according to claims 9 or 10, in which the window fitting is according
to claims 6 and 7, and the groove (551) in the outer sash (55, 1158, 54, 1205) has
a retention lip (1199) to accommodate the spur (41) of the window fitting (10) and
to increase the force needed to turn the locking latch (12) away from the closed position.
12. A window (50) according to any one of claims 8 - 11, which is an openable and/or tiltable
window, and in which the window fitting (10) or window fittings (10) are configured
in their locking position to keep the inner sash (53, 1157, 52, 1203) and the outer
sash (55, 1158, 54, 1205) closed when the window (50) is opened and/or tilted, and
in their open position to allow the cleaning of the window (50) from such areas inside
the window which are opposite each other when the inner sash (53, 1157, 52, 1203)
and the outer sash (55, 1158, 54, 1205) are locked to each other.
13. A window (50) according to any one of claims 8 - 12, in which the height (h) of the
window fitting (10) or window fittings (10) is adapted to correspond to the distance
between the inner sash (53, 1157, 52, 1203) and the outer sash (55, 1158, 54, 1205)
in order to at least partially transfer the stresses, particularly wind pressure,
exerted on the outer sash (55, 1158, 54, 1205) of the window (50) and/or the window
panes (1113) of the outer sash (55, 1158, 54, 1205), via the window fitting (10) or
window fittings (10) to the inner sash (53, 1157, 52, 1203).
14. A window (50) according to claims 13, in which the inner sash (53, 1157, 52, 1203)
is supported on the frame (1101, 1102) by means of hinges (1160), which are adapted
to transfer to the inner sash (53, 1157, 52, 1203) the stresses transferred via the
fitting (10) or fittings (10) to the frame (1101, 1102) mainly by way of the hinges
and locking.
15. A window (50) according to any one of claims 8 - 14, which is a tilt and turn window
or a side-hinged window, and in which the window fitting (10) or window fittings (10)
are configured to bring the outer sash (55, 1158, 54, 1205) with them when tilting
or opening the window (50).