Fitting for inclined windows

Abstract

Fitting for a window having a fixed frame and a tiltable sash (23) provided with fitting grooves (22) along its outer contour. The fitting comprises a support member (5) fixedly attachable in a fitting recess (22), a slider (6) slidable relative to the support member, a main arm (3) hinged at one end to the fixed frame and at the other end to the slider, and a support arm (4) hinged at one end to the support member and at the other end to the main arm, whereby the fitting is configured such that, in use, the support member (5) is fixed to the main arm (3). When the sash is moved from the closed position to the open inclined position, or when the sash is moved from the open inclined position to the closed position, the support member and the slider move relative to each other over a predetermined stroke of the slider.

Description

Technical Field

[0001] The present invention relates to fittings for tilting windows.

[0002] More specifically, the present invention relates to fittings for a window having a fixed frame and a sash, the sash being tiltably applied about a horizontal axis of the sash, the sash being rotatably applied about a vertical axis and being tiltable about a horizontal axis. Background Art

[0003] The control device of such fittings is usually provided with an operating mechanism for controlling the fittings by rotating an operating crank applied to the sash. Usually, such an operating crank can be rotated between a closed position, a tilted position and possibly a turning position. In the closed position, the window is closed; in the tilted position, the sash can be tilted about a horizontal axis; in the turning position, the sash can be rotated about a vertical axis. The operating mechanism converts the rotational movement of the operating crank into a translational movement of sliding members (such as sliding slats and / or latches of the fittings), which are slidably applied in fitting grooves provided at the profile ends along the outer contour of the sash. In order to convert the sliding movement of the sliding members applied in the horizontal fitting groove of the sash into the sliding movement of the sliding members applied in the vertical fitting groove of the sash, a corner transmission device extending partly in the horizontal and vertical fitting grooves can be used.

[0004] If the control device is in the tilted position, the sash can be hinged about a horizontal axis to a fixed open tilted position, thereby forming a certain opening, i.e., a tilted opening, at the upper side of the window. In order to maintain the tilted opening, the fittings usually provide a scissors mechanism attached to the upper side of the window between the sash and the fixed frame.

[0005] The scissors mechanism includes a main arm, a support arm and a support member, which is fixedly attached to the sash, usually located in a fitting groove at the end of the sash. The main arm is hinged and translationally connected to the sash at one end and hinged to the fixed frame at the other end. The support arm is hinged to the main arm at one end and connected to the support member at the other end.

[0006] The scissors mechanism enables the main arm and the support arm to be hinged relative to each other, whereby in the closed state of the window, the main arm and the support arm are positioned substantially parallel to each other. When the window is tilted to the open tilted position, both arms are rotated open, while the hinge at the end of the main arm moves longitudinally relative to the fitting groove in the sash and abuts against a stopper. Thus, the scissors can prevent the window from opening when tilted, which is important in terms of safety. Usually, the weight of the sash helps to keep the sash open.

[0007] However, a tilted window may accidentally close again from the open tilted position, for example due to a gust of wind. To prevent this or make it more difficult for this to happen under any circumstances, anti-impact devices are usually provided. For example, a snap device mounted on the end of the main arm, connected to a support member, and holding the sash in the open tilted position with a certain resistance. The resistance needs to be large enough to effectively counteract any unwanted sudden closing of the window, but the resistance cannot be too large because the resistance needs to be overcome when intentionally closing the sash, and it is desired to be able to intentionally close the sash smoothly and comfortably without too much force.

[0008] US2005 / 0284025 and DE2023535A1 disclose a scissors mechanism where the main arm of the scissors is coupled to the sash by inserting a pin at the end of the main arm into a groove in the sash. The groove serves as a guiding element in which the pin of the main arm can move between two extremes, which respectively reach the closed position and the fixed tilted position of the sash.

[0009] US8161683B2 discloses a scissors mechanism where the main arm of the scissors is hinged at one end to a control device that can move in a guide attached to the sash.

[0010] EP2020476A2 relates to a locking element for fixing a pin provided on a fitting arm, the pin being rotatably applied in an opening of a sliding part of the fitting. SUMMARY OF THE INVENTION

[0011] The present invention aims to provide an alternative to the above-mentioned fittings. An object of the present invention is to provide a solution that can be efficiently and effectively applied to tilted windows of a wide range of sizes and weights.

[0012] Another object of the present invention is to provide a solution with adjustable tilted openings.

[0013] Yet another object of the present invention is to provide a solution by which the impact resistance of the window can be adjusted from the open tilted position.

[0014] To at least partly provide a solution that meets one or more of the above-mentioned objects, the present invention provides a fitting for a window, the window having a fixed frame and a tiltable sash about a horizontal axis.

[0015] The fitting includes a support member and a slider, the support member being fixedly attachable along the outer contour of the sash in a relevant fitting groove, the slider being slidable relative to the support member. Usually, the fitting groove (where the support member is fixedly applied) is a horizontal fitting groove located on the upper side of the sash.

[0016] The fitting further includes a main arm and a support arm. One end of the main arm can be hinged to the fixed frame, and the other end can be hinged to the sliding member. One end of the support arm can be hinged to the support member, and the other end is hinged to the main arm.

[0017] The fitting is configured such that in use, when in the closed position of the window, the main arm and the support arm are substantially parallel to the sliding member and the support member, and in the open tilted position, the main arm and the support arm form an angle with respect to each other and with respect to the support member and the sliding member, and when moving the sash from the closed position to the open tilted position, or from the open tilted position to the closed position, the support member and the sliding member move relative to each other along the travel of the sliding member. The greater the travel, the greater the tilted opening of the window in the open tilted position.

[0018] Optionally, the slidable sliding member can be slidably applied in the fitting groove such that the sliding member can move towards or away from the support member in the fitting groove along the travel of the sliding member, which depends on the distance between the sliding member and the support member in the closed position or the pivoted position. When the maximum tilted opening is reached, the sliding member strikes the support member. The support member thus defines the travel of the sliding member. Alternatively, optionally, the slidable sliding member can be slidably applied in the oval opening in the support member, so that when the sliding member slides relative to the support member, the oval opening serves as a guide for the sliding member.

[0019] The main arm of the fitting is provided with a coupling pin at the end hinged to the sliding member. The sliding member is provided with a plurality of coupling openings on the upper side in its longitudinal direction, and the coupling pin can be detachably applied in the selected coupling opening for hinging the main arm to the sliding member.

[0020] The advantage of the construction according to the present invention is that a plurality of coupling openings are provided in the longitudinal direction of the sliding member, and the user or owner of the window can use the coupling pin to attach the main arm in the selected coupling opening. The travel length of the sliding member and the corresponding size of the tilted opening depend on the selected coupling opening for connection. This allows the user to select and set the desired tilted opening in the open tilted position, and allows the tilted opening to be adjusted again (if necessary) by removing the coupling pin from the coupling opening where the coupling pin is located, and then applying the coupling pin in another desired coupling opening to connect the main arm to the sliding member, and thus achieve the desired adjusted tilted opening. In addition, the advantage of this construction is that the user can adjust the tilted opening in a simple but reliable manner without having to adjust or add fitting components.

[0021] Optionally, the coupling pin may be provided with an annular notch at its outer contour, and the slider may be provided with a locking element having one or more channels. This allows the coupling pin to be applied in the (selected) coupling opening in such a way that the coupling pin protrudes from the channel or one of the channels of the locking element of the slider, and the annular notch of the coupling pin snaps into the edge of the locking element defining the channel.

[0022] In an embodiment of the present invention, the locking element includes a plate-like portion in which a plurality of channels are provided, and the slider is provided with a groove on one side for fittingly inserting the locking element with its plate-like portion such that the channels are aligned with the corresponding coupling openings. Optionally, for each channel, the plate-like portion of the locking element may be provided with a lip that protrudes downward relative to the plate-like portion, and the lip at least partially overlaps the associated channel. The advantage of this is that when the coupling pin is inserted into the coupling opening on the slider and the channel on the locking element, the lower side of the coupling pin contacts the corresponding lip. When pushed further down, a force is generated that forces the locking element to slide upward to a position where the annular notch of the coupling pin snaps into the edge of the locking element defining the channel, in other words, ensuring the automatic coupling of the coupling pin with the slider. To improve the stability of the said coupling, additionally or alternatively, an option is to provide the plate-like portion of the locking element with a protrusion complementary to the notch in the groove of the slider, the protrusion being configured such that in the state where the locking element is inserted, the coupling pin snaps into the locking element and the protrusion engages with the notch to lock the locking element.

[0023] In one embodiment of the present invention, the fitting comprises: a support member which can be fixedly attached to a relevant fitting groove along the outer contour of the sash; a slider which can slide relative to the support member; a main arm, one end of which can be hinged to the fixed frame and the other end of which can be hinged to the slider; and a support arm, one end of which can be hinged to the support member and the other end of which is hinged to the main arm. Thus, in use, when the sash is moved from the closed position to the open tilted position or from the open tilted position to the closed position, the support member and the slider move relative to each other over a predetermined stroke of the slider. The fitting is also provided with an anti-impact device which comprises an oval leaf spring, one end of which is connected to the support member. The connection of the leaf spring to the support member can be achieved by snap-fitting or, for example, by providing threaded holes in the support member and screw channels in the leaf spring, and screws can be screwed into the threaded holes through the screw channels. The leaf spring freely extends longitudinally in the direction of the slider beyond the support member such that, in the open tilted position of the window, the other end of the leaf spring snaps into the slider to prevent or, in any case, limit the sudden closing of the window. By sliding the slider away from the support member, a force (consistent with moving the leaf spring from the open tilted position to the closed state) is applied to the slider which is greater than the reaction spring force generated by the elastic deformation of the leaf spring, thereby disengaging the leaf spring again. The spring force depends on the free length of the leaf spring. The free length of the leaf spring is selected depending on the desired resistance to prevent the window from slamming shut from the open tilted position. Optionally, a leaf spring can be provided which is bent at its free end and, in the open tilted position, the bent end of the leaf spring snaps into a notch provided on the lower side of the slider. Preferably, the leaf spring is provided with a double bend near its free end.

[0024] Optionally, the free length of the leaf spring of the anti-impact device of the fitting can be provided adjustably. This means that the user or installer can set the impact resistance according to the local environmental conditions, and / or the size and / or weight of the window, the profile depth, the glass composition, and / or the size of the inclined opening, and can also adjust the set length later, for example, in the case where the inclined opening changes. The setting of the free length can be done, for example, by providing one or more transverse grooves at the upper side of the support member below the freely extending leaf spring, each transverse groove extending over at least a majority (usually 20% or more) of the width of the support member. This allows the adjusting member to be properly inserted laterally into the transverse groove, and in the inserted state, the adjusting member is clamped between the leaf spring and the support member, so that the free length of the leaf spring is reduced, and the impact resistance is increased. This means that when providing a single transverse groove, two free spring lengths can be selected, that is, corresponding to inserting the adjusting member into the transverse groove or not inserting the adjusting member into the transverse groove, thereby increasing or not increasing the impact resistance. If a plurality of transverse grooves are provided, the adjusting member can be selectively inserted in cooperation. In the case where the adjusting member is inserted into the selected transverse groove, the adjusting member is clamped between the leaf spring and the support member, so that the impact resistance can be set according to the position of the transverse groove.

[0025] Optionally, the adjusting member can be provided with a substantially U-shaped groove on the side facing the leaf spring, which, when in use, is configured such that in the inserted state, the leaf spring rests on the bottom of the groove, and the leaf spring is laterally clamped by the opposite edges of the U-shaped groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] For a better illustration of the features of the present invention, several preferred embodiments of a fitting for an inclined window according to the present invention will be described below by way of example with reference to the drawings, without any limiting nature, wherein:

[0027] FIG. 1 schematically and partially shows an embodiment of a fitting for a window with a sash according to the present invention, the sash being rotatable or tiltable when the sash is opened by 90°, Figure 1A 、 Figure 1B 、 Figure 1C respectively showing a top view of the fitting, a longitudinal sectional view along the C-C line in Figure 1A and an enlarged view of the part indicated by D in Figure 1B FIG.

[0028] FIG. 2 shows the fitting shown in FIG. 1 in a state where the sash is tilted and opened, wherein Figure 2A shows a top view of the fitting, Figure 2B shows a longitudinal sectional view along the A-A line in Figure 2A and Figure 2C shows Figure 2B an enlarged view of the part indicated by B in FIG.

[0029] Figure 3 Schematically shows the various components of the fitting for hingedly connecting the main arm to the fixed frame shown in FIG. 1 in a disassembled state.

[0030] FIG. 4 schematically shows an embodiment of a fitting for a window with a tiltable sash, the tiltable sash being in a state of being tilted open with a large tilt opening, Figure 4A , Figure 4B , Figure 4C partially shows the fitting in the installed state, the fitting in the uninstalled state, and Figure 4B an enlarged view of the part designated by E in

[0031] FIG. 5 schematically shows the state of the fitting shown in FIG. 4, in which the sash is tilted open with a smaller tilt opening, wherein Figure 5A , Figure 5B , Figure 5C respectively show the fitting in the installed state, the fitting in the uninstalled state, and Figure 5B an enlarged view of the part designated by F in

[0032] Figure 6A Schematically and partially shows an embodiment of a fitting for a window with a tiltable sash according to the present invention, wherein Figure 6B , Figure 6C , Figure 6D , Figure 6E respectively show a longitudinal sectional view of an enlarged view of the part of the fitting designated by G in Figure 6A during the progressive stage of connecting the main arm to the slide of the fitting; and wherein Figure 6F shows a component, more specifically a locking element, in different views.

[0033] Figure 7A Schematically shows an embodiment of a fitting for a window with a tiltable sash according to the present invention, wherein Figure 7B , Figure 7C , Figure 7D partially show longitudinal sectional views of an enlarged view of the part of the fitting designated by H in Figure 7A with different free lengths of the leaf spring of the anti-impact device respectively.

[0034] Figure 8 Shows an adjusting member for setting the free length of the leaf spring of the anti-impact device in an embodiment of the fitting according to the present invention. Detailed Description

[0035] FIGS. 1 to Figure 3The fitting shown is a fitting for a window which has a fixed frame and a sash which is rotatable about a vertical axis and tiltable about a horizontal axis relative to the fixed frame, and the control device of the fitting can be moved from a closed position in which the window is closed to a tilted position in which the window is opened by the tilting movement of the sash or to a rotational position in which the window is opened by the rotational movement of the sash. Figure 1 shows the fitting for opening the sash by rotation so that the sash forms a 90° angle with the fixed frame. Figure 2 shows the fitting for opening the sash by tilting the sash relative to the fixed frame.

[0036] Typically, the sash is made of a profile (for example made of aluminium) which has on its outer side a fitting groove such that the sash contains a continuous fitting groove along its outer contour. Fitting grooves are known and are usually formed by two upright parallel ribs of the profile which are positioned at a distance from each other and whose free edges are bent towards each other.

[0037] The fitting shown comprises a sliding slat 1 which is slidably applied in the fitting groove of a horizontal profile located on the upper side of the sash in the longitudinal direction. The sliding slat 1 is operatively connected to the operating mechanism of the control device, for example operatively connected to the operating mechanism of the control device by one or several sliding members 2. The sliding members 2 are applied in the continuous fitting groove along the contour of the sash such that the movement of the operating crank of the control device is converted into a sliding movement of the sliding slat 1 in the horizontal fitting groove of the sash. Examples of sliding members include sliding slats and / or latches which are applied in the vertical and horizontal fitting grooves of the sash and / or in a corner drive which projects partially into the vertical fitting groove and partially into the horizontal fitting groove at the corner of the sash for converting the sliding movement of the sliding member in the vertical fitting groove into a sliding movement of the sliding member in the horizontal fitting groove and / or vice versa.

[0038] To allow the sash to tilt relative to the fixed frame of the window, the fitting includes a scissor mechanism. The scissor mechanism is provided with a main arm 3 and a support arm 4. The support arm 4 is hinged to the main arm 3 at one end and to a support member 5 at the other end. The support member 5 is fixedly installed in a horizontal fitting groove of the sash above the sliding slat 1, such that the sliding slat 1 can slide in the fitting groove under the support member 5. The main arm 3 is provided with a coupling pin 7 at one end, which is used to couple with a sliding member 6 through one of two coupling openings 19 provided at the middle end of the sliding member. Obviously, more than two coupling openings 19 can also be provided on the sliding member. The sliding member 6 is applied in the horizontal fitting groove and can slide longitudinally relative to the fixed support member 5 and the sliding slat 1. This enables the sliding slat 1 to slide in the fitting groove under the sliding member 6, and when the window is opened and closed by the tilting movement of the sash, the sliding member 6 moves towards or away from the fixed support member 5 respectively along the stroke of the sliding member, depending on the distance between the sliding member 6 and the support member 5 when the scissor mechanism is in the closed state. The said distance between the sliding member 6 and the support member 5 depends on the coupling opening 19 selected in the sliding member 6, and the coupling pin 7 is applied in this coupling opening 19 for coupling the main arm 3 with the sliding member. It is also conceivable that the support member 5 overlaps with the sliding member 6. More specifically, in one embodiment, the support member 5 has an oval opening, which serves as a guide for the sliding member 6.

[0039] In the closed state of the scissor mechanism, for example, in the closed position or the turning position of the window, the turning position is shown in Figure 1, the main arm 3 and the support arm 4 are substantially parallel to the sliding member 6 and the support member 5. In this case, as Figure 1C shown, the sliding member 6 slides a certain stroke relative to the support member 5.

[0040] In the open state of the scissor mechanism, for example, in the open tilting position, as shown in Figure 2, the main arm 3 and the support arm 4 form an angle with respect to each other and with respect to the support member 5 and the sliding member 6. In this case, as Figure 2C shown, the sliding member 6 slides onto the support member 5. The support member 5 is provided with an anti-impact device 20, which snaps into a relevant notch 21 in the sliding member in the open tilting position. The snap-in anti-impact device 20 ensures a certain resistance to the separation of the sliding member 6 and the support member 5, and also counteracts the sudden closing of the sash from the open tilting position due to, for example, a gust of wind. By applying sufficient thrust towards the fixed frame on the sash, the anti-impact device 20 is disengaged from the sliding member again, and the sliding member 6 can be moved away from the support member 5 to close the sash again from the open tilting position.

[0041] The other end of the main arm 3 is hinged to the fixed frame of the window. An example of such a hinge connection is shown in Figure 3It is shown in more detail in a disassembled form. One end of the sash arm 8 is hinged to one end of the main arm 3, and the main arm 3 is located near the vertical axis in the installed state of the fitting, and the sash can rotate about this vertical axis. Near the other end of the sash arm 8, the sash arm 8 is hinged to the frame hinge member 10, and the frame hinge member 10 is in turn hinged to the frame corner member 12 of the fitting, and the frame corner member 12 of the fitting is fixedly applied in the frame groove in the horizontal profile of the fixed frame on the upper side of the window. The frame groove is a fitting groove formed on the inner side of the profile of the fixed frame of the window, and the frame member of the fitting can be applied in this frame groove, and this frame member cooperates with the member of the fitting applied in the fitting groove of the sash. The sash arm 8 is also hinged to the frame arm 9, and the frame arm 9 is in turn hinged to the frame corner member 12 and is hinged to the main arm through the sash hinge member 11. The said hinged connection between the main arm 8 and the fixed frame supports the tilting and rotation of the sash relative to the fixed frame.

[0042] The main arm 3 has the form of a slat, and the said slat shows a double bend 13. At the position of the double bend 13, a slot 14 is provided on the main arm 3 in the longitudinal direction. Between the double bend 13 and the end of the main arm 3 provided with the coupling pin 7, the main arm is provided with four holes 15, and these four holes 15 are symmetrically arranged relative to each other near the double bend. In a pair of holes in the longitudinal direction of the main arm 3, an extended protrusion 16 is attached to the lower side of the main arm, that is, the side facing the upper side of the sliding slat 1 during use, using a rivet connection protruding in the direction of the sliding slat. Optionally, on the side facing the main arm, the extended protrusion 16 can of course also be provided with a screw opening, and a removable screw can be screwed into the hole 15 through this screw opening for attaching the extended protrusion 16 to the main arm 3. In one of the remaining holes 15, that is, in the example shown, the hole closest to the double bend 13, separated from the extended protrusion 16, a short protrusion 17 is applied in the transverse direction of the main arm 3 and overlaps the extended protrusion 16 in the longitudinal direction, thereby forming an opening, which is laterally defined by the short protrusion 17 and the extended protrusion 16 respectively and is defined by the main arm 3 on the upper side. During use, the short protrusion 17 is attached to the main arm by screwing a removable screw through the relevant hole 15 into the screw opening 19 formed on the short protrusion 17, and the screw opening 19 is on the lower side of the short protrusion 17 facing the main arm 3. If necessary, the short protrusion 17 can be easily moved to another position on the main arm, for example, to the position of the remaining free hole 15, by removing the removable screw and screwing the removable screw through the free hole into the screw opening 19 of the short protrusion 17 to attach the short protrusion 17 to this other position.

[0043] The peg 18 is provided on the sliding slat 1. The peg 18 has a substantially cylindrical shape and projects outwardly towards the main arm 3 in the installed state of the fitting and with the window closed. When the sliding slat 1 is operatively connected to the control device, the peg 18 moves together with the control device, and the peg 18 can be used as a selection device for selecting the tilt position, the swivel position or the closed position depending on the position of the operating crank.

[0044] Figures 4 and 5 show the fitting for tilting a window in the installed state ( Figure 4A , Figure 5A ) and the uninstalled state ( Figure 4B , Figure 5B ). The fitting shown comprises a sliding slat 1 which can slide longitudinally in a fitting groove 22 in a horizontal profile on the upper side of the sash 23. The sliding slat 1 is operatively connected to the operating mechanism of the control device by means of a sliding member 2. In order to tilt the sash 23 relative to the fixed frame 24 of the window, the fitting comprises a scissors mechanism which is provided with a main arm 3 and a support arm 4. The support arm 4 is hinged at one end to the main arm 3 and at the other end to a support member 5 which is fixedly mounted in a horizontal fitting groove of the sash above the sliding slat 1 such that the sliding slat 1 can slide in the fitting groove 22 under the support member 5.

[0045] A slide 6 is provided in the horizontal fitting groove 22 and can slide longitudinally relative to the fixed support member 5 and the sliding slat 1. The slide is provided with two coupling openings 19 which are separated from each other in the longitudinal direction. The main arm 3 is hinged at one end to the fixed frame 24 and at the other end is provided with a coupling pin 7 which is used for coupling to the slide 6 by means of one of the two coupling openings 19 provided in the end portion of the slide. The main arm 3 is articulated to the slide 6 by means of the coupling pin 7 through the coupling opening 19 closest to the support member 5 in Figure 4 and the coupling opening 19 furthest from the support member 5 in Figure 5 respectively.

[0046] When opening and closing the window by means of the tilting movement of the sash, the slide 6 moves towards or away from the fixed support member 5 respectively over the stroke of the slide, depending on the coupling opening 19 selected in the slide 6 in which the coupling pin 7 is applied for coupling the main arm 3 to the slide. In the example shown in Figure 4, the stroke and the corresponding tilt opening are larger than those in Figure 5.

[0047] Figure 6 shows an example of coupling the main arm 3 of the scissors mechanism of the fitting to the slide 6 by applying the coupling pin 7 in the selected coupling opening 19. Figure 6BShows the slider 6 and the main arm 3 in the unconnected state. In this example, the slider 6 is provided with two connection openings 19, and the selected connection opening for connecting the main arm 3 is the connection opening closest to the support member 5 during use. The support member 5 is arranged at a specific position in the fitting groove 22 such that when the window is tilted, the support member does not move relative to the sash. The specific position may be a fixed position, but it may also be an adjustable position, for example, the adjustable position is set during the installation of the fitting or during the installation process or during a later adjustment of the window. The connection pin 7 projects from the main arm 3 and has an annular notch 25 near the outer contour of its free end. Also see Figure 6F , the fitting includes a locking element 26, which has a substantially flat plate-like portion 27. In this example, two channels 28 are applied in the plate-like portion 27. Near each channel 28, the plate-like portion 27 is provided with a lip 35, which projects downward relative to the plate-like portion and at least partially overlaps the associated channel 28. The lip 35 projects obliquely according to a specific contour and forms an angle with the plate-like portion 27.

[0048] On the side opposite to the side facing the support member 5 during use, the slider 6 is provided with a groove, as Figure 6C shown, the plate-like portion 27 of the locking element 26 is inserted into the groove such that the channels 28 are aligned with the connection openings 19. This allows the connection pin 7 to be applied in the selected connection opening 19, where the connection pin projects through the corresponding channels 28 of the locking element 26. When the connection pin 7 is inserted into the connection opening 19 on the slider 6 and the corresponding channels 28 on the locking element 26, the lower side of the connection pin contacts the inclined surface of the corresponding lip 35. When further pushed down, as Figure 6D shown, a force is generated, which causes the locking element 26 to slide upward to a position where the annular notch 25 of the connection pin 7 snaps into the edge of the channel defined by the locking element 26, as Figure 6E shown. At the same time, the protrusion 29 of the locking element 26 snaps into a complementary notch in the groove of the slider 6, and the articulated connection between the main arm 3 and the slider is firmly locked. The locking element 26 is also provided with a stop 36 at the insertion end such that the locking element 26 is not accidentally removed from the slider 6.

[0049] Figures 6B to 6E Sequentially shows the steps of "automatic locking" when pushed in. In this way, it is ensured that the installer does not forget to lock the connection. The separation is manual, so a deliberate action is required.

[0050] Figure 7 shows an example of the anti-impact device 20 of the fitting, which is used to prevent the closing of the scissor mechanism and the related window from accidentally hitting and closing from the open tilted position. The figure shows the anti-impact device 20 in a state where the scissor mechanism is closed, the slider 6 and the support member 5 are arranged separately and are at a distance from each other. In other words, the anti-impact device 20 is not snapped into the relevant notch 21 on the slider 6.

[0051] The anti-impact device 20 includes an oval leaf spring 30, one end of which is connected to the support member 5 and freely extends longitudinally in the direction of the slider 6 beyond the support member 5 and projects beyond the side of the support member facing the slider 6. The free end of the leaf spring 30 is curved, and a double-bending portion 31 is provided near the free end.

[0052] In the open tilted position of the window, the free end of the leaf spring 30 snaps into the notch 21 of the slider. By applying a force to slide the slider 6 away from the support member 5, which is greater than the reaction spring force generated by the elastic deformation of the leaf spring 30, the leaf spring 30 is disengaged again. The spring force depends on the free length of the leaf spring 30. The free length of the leaf spring is selected according to the desired resistance to prevent the window from slamming shut from the open tilted position, and the free length of the leaf spring is adjustable in the shown example. For this purpose, two transverse grooves 32 extending over the entire width of the support member 5 are provided on the upper side of the support member 5 below the freely extending leaf spring 30. In this way, the adjusting member 33 (as Figure 8 shown) can be appropriately inserted into one of the transverse grooves. When in use, the adjusting member 33 is provided with a generally U-shaped groove 34 on the side facing the leaf spring 30. When the adjusting member 33 is inserted into one of the transverse grooves 32, the leaf spring 30 rests on the bottom of the U-shaped groove 34 and is laterally clamped by the opposite edges of the groove 34.

[0053] Figure 7B The anti-impact device 20 is shown with no adjusting member 33 inserted into one of the transverse grooves 32. Here, the leaf spring has the maximum free length. Figure 7C The anti-impact device 20 is shown, which has an adjusting member inserted into the transverse groove 32 that is closest to the end where the leaf spring 30 is connected to the support member 5. In the inserted state, the adjusting member 33 is clamped between the leaf spring 30 and the support member 5. This means that the leaf spring 30 has a smaller free length, resulting in an increased impact resistance. Figure 7D The anti-impact device 20 is shown, where the adjusting member 33 is inserted into the other transverse groove 32, and the leaf spring has the shortest adjustable free length.

[0054] The present invention is in no way limited to the embodiments described by way of example and shown in the drawings. The fittings for windows with a fixed frame and a tiltable sash according to the present invention can be implemented in various forms and sizes without departing from the scope of the present invention.

Claims

1. A fitting for a window having a fixed frame (24) and a sash (23) which can be tilted about a horizontal axis, the fitting comprising: A support member (5) which can be fixedly attached in an associated fitting groove (22) along the outer contour of the window sash; A sliding member (6), wherein the sliding member (6) is slidable relative to the supporting member; a main arm (3), one end of which is hinged to the fixed frame, and the other end of which is provided with a connecting pin (7) for hinged connection with the sliding member (6), and A support arm (4), one end of which is hinged to the support member and the other end of which is hinged to the main arm, the accessory being configured so that, in use, in the closed position of the window, the main arm and the support arm are substantially parallel to the slide and the support member, while in the open tilted position, the main arm and the support arm are angled relative to each other and to the support member and the slide, characterized in that In use, when the window sash is moved from the closed position to the open tilted position, or when the window sash is moved from the open tilted position to the closed position, the support member and the slider move relative to each other over a predetermined stroke of the slider, and The sliding member is provided with a plurality of connection openings (19) on the upper side in the longitudinal direction, and the connection pin is selectively arranged in the connection opening (19) for hingedly connecting the main arm with the sliding member, and the stroke of the sliding member and the corresponding tilting opening are determined according to the selectively connected connection opening.

2. The accessory according to claim 1, characterized in that: The coupling pin (7) is provided with an annular recess (25) and can be arranged in a selected coupling opening (19) so that the coupling pin protrudes through a channel (28) of a locking element (26) of the slide (6), the annular recess (25) of the coupling pin snapping into an edge of the locking element defining the channel (28).

3. The accessory according to claim 2, characterized in that: The locking element (26) comprises a plurality of channels (28) and a plate-like portion (27), the plurality of channels (28) being applied to the plate-like portion, and the slide (6) is provided with a groove on one side for inserting the plate-like portion of the locking element so that the channels are aligned with corresponding coupling openings (19).

4. The accessory according to claim 3, characterized in that: For each channel (28), the locking element (26) comprises a lip (35) which projects downwardly relative to the plate-like portion (27) and at least partially overlaps the channel.

5. The accessory according to claim 4, characterized in that The lip (35) forms an angle with the plate-like portion (27).

6. The accessory according to any one of claims 3 to 5, characterized in that The plate-shaped portion (27) of the locking element (26) is provided with a protrusion (29) which is complementary to the notch in the groove of the sliding member (6), and the protrusion is configured so that when the locking element is in the inserted state, the coupling pin (7) is snapped into the locking element, and the protrusion engages with the notch to lock the locking element.

7. The accessory according to claim 1, characterized in that The accessory is provided with an anti-collision device (20), which includes an elliptical leaf spring (30), one end of which is connected to the support part (5) and freely extends longitudinally beyond the support part in the direction of the sliding member (6). In the open tilted position of the window, the other end of the leaf spring is locked in the sliding member to prevent the window from closing suddenly.

8. The accessory according to claim 7, characterized in that The free end of the leaf spring (30) is bent, and when in the open tilted position, the bent end of the leaf spring is snapped into a notch (21) provided on the lower side of the slide (6).

9. The accessory according to claim 7 or 8, characterized in that: A double bent portion (31) is provided near the free end of the leaf spring (30).

10. The accessory according to any one of claims 7 to 9, characterized in that The free length of the leaf spring (30) is adjustable.

11. The accessory according to claim 10, characterized in that A transverse groove (32) extending along at least a majority of the width of the support component is provided on the upper side of the support component below the freely extending leaf spring (30), into which the adjustment member (33) can be appropriately inserted transversely, so that the adjustment member is clamped between the leaf spring and the support component (5) in the inserted state, thereby reducing the free length of the leaf spring and increasing the impact resistance.

12. The accessory according to claim 11, characterized in that A plurality of parallel transverse grooves (32) extending along at least a majority of the width of the support component (5) are provided on the upper side of the support component (5) below the freely extending leaf spring (30), into which the adjustment member (33) can be selectively and appropriately inserted transversely, so that in the selected transverse groove, the adjustment member in the inserted state is clamped between the leaf spring and the support component, and the impact resistance is thereby set.

13. The accessory according to claim 11 or 12, characterized in that When in use, the adjusting member (33) is provided with a substantially U-shaped groove (34) on the side facing the leaf spring, and the U-shaped groove is configured so that in the inserted state, the leaf spring rests on the bottom of the U-shaped groove and is laterally clamped by the opposite edges of the U-shaped groove.

14. An accessory according to any one of claims 7 to 13, characterized in that The support component (5) is provided with a threaded hole, and the leaf spring (30) is provided with a screw channel. The screw is screwed into the threaded hole through the screw channel to connect the leaf spring with the support component.

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