EP3045637B1 - Fitting device - Google Patents

Description

The present invention relates to a fitting arrangement for a window, a door or the like with a scissor fitting comprising a scissor arm and a scissor link articulated to the scissor arm, wherein the scissor arm can be coupled to a sash of the window or the door at a first coupling point, and the Scissor arm can be coupled to a second coupling point with a scissor bearing that can be fastened to the frame of the window or door in order to mount the sash pivotably on the frame.

In such a fitting arrangement, the wing is not simply mounted on the hinge side via one or more pivot bearings, which are designed in the manner of hinges, on the frame about the pivot bearings. Instead, a scissor fitting is provided which additionally couples the sash, in particular on its upper side, to the frame. Such a scissor arm improves the stability of the mounting of the sash on the frame not only when the sash is rotated, by supporting the sash in particular against tensile forces acting vertically downwards on the sash due to gravity, but it also enables the sash to be tilted open The scissor fitting on the one hand limits the amount by which the sash can be tilted and on the other hand (indirectly) couples the tilted sash to the window frame on the side opposite the tilt axis and thus tilting away from the window frame.

The scissor fitting comprises a scissor arm and a scissor link, which are articulated to one another in order to be able to spread open like a scissor mechanism. The scissor arm is generally elongated and is pivotably coupled to a scissor bearing provided on the frame at the said second coupling point via a hinge bracket. The other end of the scissor arm is usually coupled to the wing, however not rigid, but guided between different positions in an elongated hole or a groove on the sash. In contrast, the scissor arm is usually articulated at a fixed articulation point spaced from the ends with the scissor arm, which in turn is coupled to the wing at the said (fixed) first coupling point. In this way, the sash side on which the scissor fitting is arranged can be tilted away from the frame, since the scissor arm and the scissor link, which are aligned parallel to one another when the sash is closed, can open when the sash is tilted open in this way.

When installing the sash on the frame, it is important that the effective length of the scissor fitting, ie the distance between the first coupling point at which the scissor arm is coupled to the sash and at which the sash is thus held by the scissor fitting, and that Position on the frame where the stay arm is coupled to the stay bearing via the bench bracket is correctly adjusted. This is because the effective length of the scissor fitting influences the correct alignment of the sash to the frame, in particular the height of the side of the sash remote from the hinge when the sash is open to pivot.

For example, shortening the effective length of the scissor fitting causes the sash to be raised relative to the frame, while the sash drops when the effective length of the support arm is lengthened relative to the frame. Raising and lowering of the wing is to be understood in such a way that the side of the wing remote from the belt is offset upwards when the wing is raised compared to the side near the belt and is offset downwards when the wing is lowered compared to the side close to the belt.

If the effective length of a scissor fitting coupling a sash with a frame is incorrectly set, the sash can be compared to the frame be raised or lowered in such a way that when the open sash is closed, ie when the sash is pivoted towards the frame, the sash is not pivoted precisely into the frame, but rather with its upper or lower side on the corresponding side before the closed position is reached of the frame can run up and is swiveled along this dragging into the frame.

But even if the effective length of the scissor fitting is set correctly during the assembly of the sash, parts of the sash may warp over time, in particular due to the dead weight of the sash, or parts of the fitting arrangement may deform and / or stretch to a certain extent, so that the Wing in particular sinks. A sash that has sunk in this way runs onto the frame when it is closed instead of swiveling smoothly into the frame. This not only leads to abrasion between the sash and the frame, but also to an increased mechanical load on the fitting arrangement. Because while the scissor fitting and in particular the associated scissor bearing always experience forces aligned in the same direction (essentially exclusively tensile forces) when the effective length of the scissor fitting is correctly set, forces in the opposite direction are also exerted on the fitting arrangement when a sunken sash hits the frame. In particular, the resulting change between tensile and compressive forces causes high mechanical stress on the fitting arrangement and leads to increased wear.

To adjust the effective length of the scissor fitting, two parts of the supporting structure comprising the scissor fitting and the scissor bearing can be variably fixed in different positions relative to one another. In this way it may be possible to adjust the effective length of the scissor fitting, for example by moving it, and then to fix it by suitable means. For example, a screw and a nut (or some other mating thread) be provided by which the two parts are coupled to one another. Tightening or loosening the screw with respect to the nut can cause the parts to move relative to one another. However, the screw and the nut can also only be used to determine an effective length of the scissor fitting that is set by manually moving the parts.

The effective length of the scissor fitting is set during assembly or as part of a readjustment that is required due to deformation of the sash, for example, by means of a tool, such as a screwdriver or a special tool. Due to the often restricted accessibility of the scissor arm and the scissor bearing, the setting of the effective length of the scissor fitting also usually has to be carried out by a specialist. In many cases, the readjustment of a lowered sash is not necessary at all if, for example, laypeople do not even recognize that readjustment is necessary or shy away from the costs of professional implementation. This represents a safety risk, since an incorrectly set effective length of the scissor fitting can lead to damage to the sash bearing due to the increased wear.

In DE 71 12 124 U a fitting arrangement designed according to the preamble of claim 1 is described, in which the effective length of the scissor fitting is adjustable during assembly. In contrast, it is advantageous if the two parts are connected to one another via at least one adjustable coupling element which is designed to be automatically adjusted when the sash is closed so that a misalignment of the sash is corrected by shortening or lengthening the effective length of the scissor fitting. A fitting arrangement for a wing that can only be opened in rotation, in which the effective length of the scissor fitting is automatically adjusted when the wing is turned, is from the DE 197 18 325 C1 known.

It is an object of the invention to provide a fitting arrangement of the type mentioned, with a simple structure and improved accessibility, which enables simple, in particular automatic, readjustment of the effective length of the scissor fitting.

The object is achieved by a fitting arrangement having the features of claim 1.

In other words, in the fitting arrangement according to the invention, the effective length does not have to be adjusted manually - manual adjustment does not even have to be possible - but takes place automatically when the sash is closed. In particular, use can be made of the fact that when the sash is closed, the window frame enforces a correct alignment, i.e. a precise alignment to the window frame. Even if the sash has a misalignment in the open state and therefore hits the frame when it is closed, the interaction with the frame causes the sash to be ultimately forced into the correct alignment. The one-way clutch provided according to the invention forms the aforementioned coupling element, which can be automatically adjusted precisely because of this interaction.

Since the coupling element connects the two variably fixable parts with one another, the effective length of the scissor fitting can be changed in particular by adjusting the coupling element. The coupling element can advantageously use the interactions that occur when the sash is closed to adapt the position of the two parts that can be variably fixed relative to one another. For example, the coupling of the parts brought about by the coupling element can initially be released by closing the sash and restored at the latest when the completely closed position of the sash is reached. In this way, the parts can be advantageously straight in the relative position to each other are connected to each other again, which is predetermined by the closed wing and which therefore corresponds to a correct alignment of the wing.

An embodiment according to the invention also has an advantageous effect on the simplicity of assembly of the fitting arrangement. The scissor fitting can namely initially be set to a maximum or at least a particularly large effective length during the assembly of the fitting arrangement. The sash then does not necessarily have to be installed in the exactly correct orientation, but can in particular initially be stored slightly hanging (i.e. slightly lowered) on the frame. When it is closed for the first time, the sash runs onto the frame and is pushed upwards by it. As a result, the effective length of the scissor fitting is shortened due to the design according to the invention to just the right amount, i.e. in such a way that the sash is correctly aligned relative to the window frame and is therefore swiveled into the window frame with an accurate fit when the wing is next closed. If the sash should lower again after some time, e.g. due to the effect of gravity, this independent adjustment takes place again automatically. Since the degree of misalignment of the sash that occurs during assembly or after assembly is usually small, the variability of the two parts of the fitting arrangement, which can be variably set in different positions, does not need to be particularly extensive and can, for example, be limited to positions that are at most differ by a few centimeters.

According to the invention, the two variably fixable parts are displaceable relative to one another and are coupled to one another via the one-way clutch which forms the coupling element and which enables the parts to be displaced in one direction and blocked in the other direction. The various relative positions are thus obtained by moving the parts mentioned relative to each other. In this case, however, the two parts cannot be moved freely because they are coupled to one another via the one-way clutch. As a result, the two parts can only be displaced relative to one another in one direction (for example towards one another). In the other direction (for example away from each other), however, they are blocked from moving.

The one-way clutch consequently rigidly couples the two parts to one another in one direction of displacement, but at least allows the parts to be moved relative to one another in the opposite direction without the parts necessarily having to be completely decoupled from one another. Rather, the one-way clutch can permanently couple the two parts, so that although the parts can be displaced relative to one another in said one direction, they are not completely detached from one another. In addition, the displaceability of the parts relative to one another can be limited. For example, the one-way clutch can in principle allow the parts to be shifted towards one another. However, the distance by which the parts can be moved can be limited by the one-way clutch or in some other way (for example by stops on the parts themselves or other elements of the fitting arrangement).

In particular, it is preferred if the one-way clutch is designed to enable a displacement movement of the parts that shortens the effective length of the scissor fitting and to block a displacement movement of the parts that lengthen the effective length of the scissor fitting. Thus, the one-way clutch can correct such misalignments of the wing in which the wing is lowered compared to the correct position in which a precisely fitting pivoting of the wing in the frame is possible, as is often the case, in particular due to gravity.

According to one embodiment, the one-way clutch is between an end region of the scissor arm on the scissor bearing side and one for fastening the scissor arm provided on the pivot bearing connecting component, in particular a handle or a hinge bracket, effective. Such a carrying handle can essentially be designed as an angle which is pivotably mounted with one leg via a hinge bracket on the scissor bearing, while the other leg is coupled to the scissor arm by means of the one-way clutch. Thus, the carrying handle can easily enable the mounting of a scissor arm which is angled, in particular perpendicular, to a pivot axis of the scissor bearing. The connecting component can, however, also be designed in other ways, as long as it enables the scissor arm to be attached to the hinge bracket. Neither the scissor arm nor the connecting component nor the hinge bracket have to be made in one piece. In particular, between the scissor arm and the hinge bracket, in addition to the connecting component, further elements can effect or support the attachment of the scissor arm to the hinge bracket and thus the coupling to the scissor bearing.

In such an embodiment, the change in the effective length of the scissor fitting results in particular from the fact that the scissor arm and the connecting component are displaced relative to one another, whereby the distance between the first coupling point at which the scissor arm can be coupled to the wing differs from that caused by the hinge angle or the scissor bearing changed pivot axis defined.

According to an alternative embodiment, the one-way clutch is integrated in the hinge bracket or in the scissor bearing. For example, hinge brackets or scissor bearings can be designed in several parts, with at least two of these parts being displaceable relative to one another and with the one-way clutch acting in the aforementioned manner between these two parts. The relative displaceability can, for example, between a fastening section, via which the scissor bearing can be screwed to the frame, and a mounting section of the scissor bearing, which is used to pivot the scissor arm or a connecting component coupled to it, are present.

According to the invention, the one-way clutch has a locking device. A latching device represents a simple mechanism to fulfill the function of the one-way clutch, namely to enable two dividers coupled by means of the one-way clutch to be displaced relative to one another in one direction and to block in the opposite direction.

The locking device advantageously means that there is no manual release or release caused by a further element and then the coupling of the two parts has to be carried out again to move the two parts in one direction, but rather that the mere shifting of the two parts in the one direction causes loosening and re-coupling. The latching caused by the latching device can in particular take place in a stepped manner, for example at regular intervals, so that a correspondingly shortened or lengthened effective length of the scissor fitting is set in each case when it is shifted by a certain amount (latching step). Such a gradation can be used to determine the fine gradations in which an adjustment of the effective length of the scissor fitting should be possible.

The latching device comprises a toothing formed on one of the displaceable parts and a counter-toothing formed on the other part and cooperating with this. Such an embodiment represents a structurally particularly simple form of a latching device and can be manufactured with great precision. Advantageously, the toothing and the counter-toothing work together precisely because of their respective design in such a way that they allow the displaceable parts to slide along one another in one direction, but block them in the other direction.

According to the invention, the toothing has an asymmetrical tooth shape. An asymmetrical tooth shape can ensure that the interaction of the toothing and the counter-toothing, which can also have an asymmetrical tooth shape, albeit not necessarily equally, in which one direction of displacement allows displacement, but blocks it in the other direction of displacement.

The tooth flanks of the toothing pointing to one side run obliquely to a longitudinal axis of the scissor arm and the tooth flanks of the toothing pointing to the opposite side run at least substantially at right angles to the longitudinal axis. In this context, oblique is to be understood as meaning that the tooth flanks are neither aligned parallel nor perpendicular to the longitudinal axis, but rather have a mean angle to it of, for example, between 20 ° and 70 °. To this end, the tooth flanks of the counter-toothing can be designed in a corresponding manner, but in precisely the opposite direction. If, in such an embodiment, the teeth and the mating teeth mesh, tooth flanks of the toothing aligned perpendicular to the longitudinal axis rest on tooth flanks of the mating teeth aligned perpendicular to the longitudinal axis, and tooth flanks of the toothing aligned obliquely to the longitudinal axis rest on tooth flanks of the mating toothing aligned obliquely to the longitudinal axis. According to an advantageous development, the latching device comprises a pawl which is movably, in particular pivotably, mounted on one of the displaceable parts and engages in latching recesses formed by the toothing of the other part. In particular, said counter-toothing can be formed on the locking pawl, so that the locking pawl engages with this counter-toothing in the locking recesses of the respective other part. The mobility of the pawl makes it possible that the engagement of the pawl in the locking recesses can be at least temporarily canceled is in that the pawl is moved, in particular pivoted, out of the engaging position.

It is preferred here if the pawl is pretensioned by means of a spring element into a locking position that blocks any displacement movements of the parts. The locking position blocking any shifting movements of the parts is to be understood in such a way that the sliding parts cannot be shifted relative to one another without having to move the locking pawl out of its locking position for this purpose. However, it is not excluded that the displacement of the parts itself leads to the locking pawl being moved out of the locking position. In particular, it is advantageous if the pawl and the latching recesses are designed such that a displacement force exerted on the displaceable parts in a displacement direction leads to a displacement of the pawl out of the blocking position, so that the parts can be moved in this direction while a Displacement force in the other displacement direction does not lead to any displacement of the pawl, so that the parts are blocked against displacement in this other direction.

Such a pretensioned locking pawl can ensure that the one-way clutch reliably couples the displaceable parts in the direction to be locked, i.e. in particular against forces acting on the sash and the fitting arrangement due to the force of gravity. The pawl can advantageously also be designed in such a way that it can be moved manually out of the blocking position against its bias, in order, if necessary, to enable the displaceable parts to be shifted in the otherwise blocked direction as well.

Furthermore, it is advantageous if the pawl is mounted directly on an end region of the scissor arm on the scissor bearing side. At such an end region, for example, a coupling of the scissor arm to a connecting component can be used or the hinge bracket, so that the pawl can be effective in the context of this coupling. In addition, the pawl does not extend very far away from the frame in this way, even when the sash is rotatably opened or tilted, so that it is not exposed and it can thus be avoided that it is inadvertently actuated in a releasing manner.

According to a further embodiment, the pawl is mounted on an underside of the scissor arm facing the sash of the window or the door, a recess in the scissor arm allowing at least partial access to the pawl from the top of the scissor arm. In such an embodiment, the pawl is thus arranged essentially covered and protected, so that an unintentional loosening of the coupling of the two displaceable parts is avoided. At the same time, however, access to the pawl is possible at least from a certain angle (from above) which is atypical when the wing is operated in the usual way. Through this access, the pawl can be released manually if necessary, for example without tools or by means of a pen or screwdriver. This may be necessary, for example, if an overcorrection has taken place and the alignment of the wing has been changed beyond the correct position.

Another fitting arrangement not according to the invention for a window, a door or the like, which achieves the stated object in an alternative manner, has a scissor fitting which comprises a scissor arm and a scissor link articulated to the scissor arm, the scissor arm at a first coupling point a sash of the window or the door can be coupled, and wherein the scissor arm can be coupled at a second coupling point with a scissor bearing that can be fastened to the frame of the window or the door in order to pivot the sash on the frame. Two parts of the supporting structure comprising the scissor fitting and the scissor bearing can be variably fixed relative to one another in different positions in order to achieve the effective length to adjust the scissor fitting. Furthermore, the two parts are connected to one another via at least one adjustable coupling element which is designed to be automatically adjusted when the sash is closed so that a misalignment of the sash is corrected by shortening or lengthening the effective length of the scissor fitting.

In this fitting arrangement, one of the two parts that can be variably fixed in different positions can be the scissor arm and the other of the scissor link, the scissor arm and the scissor link having a common articulation point which is variable in the longitudinal direction of the closed scissor fitting and at which they are articulated to one another. In contrast to conventional scissor fittings, in this fitting arrangement the scissor arm and the scissor link are not articulated to one another at a fixed point, but the point at which the scissor arm and the scissor link are connected to one another is adjustable. In particular, this articulation point can be adjusted in the longitudinal direction of the scissor fitting, i.e. parallel to the extension of the scissor fitting when the scissor fitting is closed and consequently the scissor arm and the scissor link are aligned parallel to one another, which is the case, for example, when the sash is closed or rotated.

With such a fitting arrangement, no further element needs to be provided that can be variably fixed in different positions with respect to the scissor arm or the scissor link or any other part of the scissor fitting, since the coupling of the scissor arm to the scissor link itself is variable. In this way, the fitting arrangement does not have to differ fundamentally from conventional fitting arrangements, but only in that the coupling of the scissor arm with the scissor link has a variable articulation point through which the effective length of the scissor fitting can be changed in a simple manner. The effective length in the event of a misalignment of the sash, a mechanism is then advantageously provided which allows the position of the mentioned articulation point to be adjusted, especially when the sash is tilted closed, but the articulation point after the correct position has been reached, especially when the sash is rotated, in which the sash is usually replaced by the scissor fitting is worn, fixed and stable.

In a further development of this fitting arrangement, this function is achieved in that the coupling element comprises at least one toothing formed on the scissor arm and at least one counter-toothing formed on the scissor arm, the toothing and the counter-toothing being adapted to interlock when the scissor arm and the scissor arm are parallel are aligned with each other. The interlocking of the toothing and the counter-toothing advantageously leads to the variable common articulation point of the scissor arm and the scissor link being set to a specific position, in particular at the time of the interlocking. Here, the scissor arm can comprise a clamping part, the clamping part then being able to have a toothing as part of the scissor arm.

The toothing and the counter-toothing mesh with one another at least when the scissor arm and the scissor link are aligned parallel to one another, that is to say, for example, in the closed position of the scissor fitting. It is conceivable that they also interlock in other positions of the scissor fitting. In principle, however, it is sufficient if the teeth mesh with one another when the scissor fitting is closed and thus define the otherwise changeable effective length of the scissor fitting. This is because the wing is only carried by the scissor fitting when the sash is in the rotationally open state and the inclination and thus a possible misalignment of the sash depends on the effective length of the scissor fitting. Against this can When the sash is tilted open, it is not misaligned, since the side facing the tilt axis (usually the bottom, but can also be the top) is supported on the frame and is thus correctly aligned. Therefore, when the sash is in the tilt-open state, the effective length of the then sheared scissor fitting need not be specified.

The automatic adjustment of the toothing and counter-toothing to one another then takes place when the tilt-open sash is closed. When the sash rests on the lower or upper transverse spar of the window frame or a locking part provided there, the sash is correctly aligned in the tilt-open state, which can be shortened (if the sash is hanging) or lengthened (if the sash is raised too much) compared to the misalignment . Since the toothing and the counter-toothing do not intermesh when the scissor fitting is opened, the articulation point between the scissor arm and the scissor link is initially freely adjustable within the scope of the possible adjustability and assumes the position that corresponds to the current alignment of the sash and is therefore automatically correct. The effective length of the scissor fitting is set correctly, but must still be determined, i.e. fixed, so that it is retained when the sash is subsequently opened. This takes place when the tilt-open sash is closed. Then the scissor fitting also closes and the toothing and the counter-toothing mesh with one another, so that they prevent the position of the articulation point from continuing to change. Thus, the effective length of the scissor fitting is determined and remains as long as the toothing and counter-toothing remain in engagement with one another, i.e. as long as the scissor fitting remains closed, in particular when the sash is turned open.

In contrast to a fitting arrangement according to the invention, in which the variability of the relative position of the two variable parts is achieved by moving the parts in conjunction with a locking mechanism, takes place in the Fitting arrangement described last, so the automatic adjustment of the effective length of the scissor fitting not when closing the pivot-open sash, but when closing the tilt-open sash.

According to a further development of this fitting arrangement, the toothing is formed on a longitudinal side of the scissor arm facing the wing and the counter-toothing is formed on a longitudinal side of the scissor arm facing the wing. The longitudinal side facing the wing means that longitudinal side of the scissor arm or of the scissor link which, when the wing is tilted open, points in the tilting direction, that is, in the direction of the wing and away from the frame. In principle, however, the toothing on a longitudinal side of the scissor arm facing away from the wing and the counter-toothing on a longitudinal side of the scissor arm facing away from the wing can also be configured in reverse. Furthermore, in a further development of the fitting arrangement on the scissor arm, two toothings arranged on opposite longitudinal sides of the scissor arm can be formed and two counter-toothings arranged on opposite longitudinal sides of the scissor arm can be formed on the scissor arm. The toothing and the counter-toothing are advantageously each arranged in such a way that when the scissor fitting is closed, that is, when the scissor arm and the scissor link are pivoted relative to one another in a mutually parallel alignment, they can mesh with one another. Depending on the position of the articulation point, the toothing and counter-toothing are also arranged differently relative to one another, in particular with regard to a longitudinal alignment, so that the articulation point is fixed in its respective position by the interlocking of the toothing and counter-toothing arranged in this way.

Furthermore, it is advantageous if the toothing is designed to be pivotable on the scissor arm and is spring-preloaded in the direction of the counter-toothing and / or if the counter-toothing is designed to be pivotable on the scissor arm is and is spring-loaded in the direction of the toothing. The toothing (or counter-toothing) can consequently be swiveled out in the direction of the counter-toothing (or toothing) when the scissor fitting is open due to the bias. As a result, when the scissor fitting is closed, for example when the tilt-open sash is closed, the toothing and the counter-toothing already meet before the scissor arm and the scissor link are completely parallel to one another. As a result, at least one tooth or some teeth of the toothing can already engage in the mating toothing (or vice versa) before the toothing and the mating toothing are also aligned in parallel and mesh flush with one another. This premature interaction, together with the spring preload, can advantageously lead to the fact that the meshing of the toothing and the counter-toothing tends to define an effective length of the scissor fitting that is slightly shorter (for example by one tooth spacing of the toothing) compared to the current sash alignment, in which the sash is raised slightly when it is closed becomes. Due to the slightly shortened effective length, the fitting arrangement can then be particularly well suited to keep the pivoted sash so stable against gravity that it does not run onto the frame when it is closed.

In another further development of the fitting arrangement, said articulation point is defined by a pin of the scissor arm engaging in an elongated hole of the scissor arm or by a pin of the scissor arm engaging in an elongated hole of the scissor arm. Providing a pin on the scissor arm (or scissor arm) which engages in a hole on the scissor arm (or scissor arm) is a particularly simple way of articulating the scissor arm and the scissor arm. In order to make the articulation point of this articulated coupling variable, it is therefore advantageous to make the hole as an elongated hole. A determination of the position of the pin in the elongated hole for the determination of the articulation point does not need to be done by interaction of the pin with the elongated hole, but can also take place at another point, for example by means of the aforementioned toothing and counter-toothing, between the scissor arm and the scissor link.

However, it is advantageous if the elongated hole has internal toothing, the pin having a radial extension which is adapted to engage in the internal toothing when the scissor arm and the scissor link are aligned parallel to one another. In this case, the extension can point away from the internal toothing when the scissor fitting is sheared open, so that the pin can be arranged essentially freely in the elongated hole. By closing the scissor fitting, whereby the scissor arm and the scissor link are aligned parallel to each other, the extension then engages in the internal toothing and thus defines the position of the pin in the elongated hole and consequently also the articulation point of the scissor link on the scissor arm. In particular, when the scissor link is pivoted into the parallel alignment relative to the scissor arm, the extension can already engage in the internal toothing when the scissor arm and the scissor link are not yet completely aligned parallel to one another. Similar to the pivotable and pretensioned toothing described above, this can bring about an advantageous slight shortening of the effective length of the scissor fitting compared to the correct alignment of the sash predetermined by the sash resting on the frame by lifting the sash slightly.

According to an alternative embodiment of the fitting arrangement, the counter-toothing is formed on an upper side of the scissor link facing the scissor arm. For this purpose, a clamping part can be provided which is rotatably coupled to the scissor arm at the articulation point and is coupled to the scissor arm so that it can be moved laterally along the axis of rotation. The toothing can be provided opposite the counter-toothing, on a side of the clamping part facing the scissor link.

Such a configuration of the fitting arrangement has the advantage that no structural adaptation of the scissor arm has to be made. Rather, existing systems can only be converted to the new system by replacing the scissor link and not the scissor arm.

Furthermore, the clamping part can have at least one elevation on a side facing the scissor arm and / or the scissor arm on a side facing the clamping part, the elevation being designed to bring about a lateral displacement of the clamping part along the axis of rotation when tilting, in order to counteract the toothing of the scissor arm to bring into engagement with the teeth of the clamping part.

In this way, reliable engagement between the counter-toothing of the scissors-type arm and the toothing of the clamping part is achieved during the closing from a tilted position.

The clamping part can preferably have two elevations on the side facing the scissor arm, which are advantageously arranged on opposite sides of the articulation point. In particular, the two elevations can be arranged in opposite end regions of the scissor arm.

This has the advantage that the clamping part remains aligned parallel to the scissor arm during the lateral displacement along the axis of rotation, whereby tilting of the clamping part is prevented.

It is also conceivable that the scissor arm has two elevations on the side facing the clamping part, which can be arranged on opposite sides of the articulation point.

This would have the advantage that an elevation is no longer required on the clamping part and thus a simpler and more cost-effective manufacture of the clamping part is possible.

The first coupling point can also be designed with friction. This has the advantage that when the sash is closed from the tilted position, a contact pressure is generated between the clamping part and the scissor arm, whereby the longitudinal toothing of the clamping part first engages the opposing toothing of the scissor arm before the scissor fitting can shear shut. Such a friction-prone first coupling point can, however, also be provided in any other fitting arrangement described. Furthermore, any other coupling point can be designed to be frictional.

Fig. 1A bis 1C

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Fig. 2A und 2B

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Fig. 3A bis 3C

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Fig. 4A und 4B

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Fig. 5A bis 5C

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Fig. 6A bis 6C

zeigen die nicht erfindungsgemäße zweite Beschlaganordnung in einer Ansicht von oben, einer Ausschnittsvergrößerung der Ansicht von oben und einer weiteren Ausschnittsvergrößerung der Ansicht von oben bei geöffnetem Scherenbeschlag.

Fig. 7

zeigt eine nicht erfindungsgemäße dritte Beschlaganordnung in einer perspektivischen Ansicht bei geöffnetem Scherenbeschlag.

Fig. 8A und 8B

zeigen die nicht erfindungsgemäße dritte Beschlaganordnung in einer Ansicht von unten und eine Detailansicht B von Fig. 8A.

Fig. 9A und 9B

zeigen die nicht erfindungsgemäße dritte Beschlaganordnung in einer Ansicht von oben bei geöffnetem und geschlossenem Scherenbeschlag.

Fig. 10A bis 10C

zeigen die nicht erfindungsgemäße dritte Beschlaganordnung in einer perspektivischen Ansicht, einer Seitenansicht und eine Detailansicht C von Fig. 10B.

The invention and alternative fitting arrangements not according to the invention are explained in more detail below, merely by way of example with reference to the figures.

Figures 1A to 1C

show an embodiment of a fitting arrangement according to the invention in a perspective view, a partial view from above and a sectional view from the side.

Figures 2A and 2B

show an enlarged section of the Figure 1C the embodiment in two different states.

Figures 3A to 3C

show a first fitting arrangement not according to the invention in a view from the side, a view from above and an enlarged detail of the view from above with the scissor fitting closed.

Figures 4A and 4B

show the first fitting arrangement not according to the invention in a view from above and in an enlarged detail of the view from above with the scissor fitting open.

Figures 5A to 5C

show a second fitting arrangement not according to the invention in a view from the side, a view from above and an enlarged detail of the view from above with the scissor fitting closed.

Figures 6A to 6C

show the second fitting arrangement not according to the invention in a view from above, an enlarged section of the view from above and a further enlarged section of the view from above with the scissor fitting open.

Fig. 7

shows a third fitting arrangement not according to the invention in a perspective view with the scissor fitting open.

Figures 8A and 8B

show the third fitting arrangement not according to the invention in a view from below and a detailed view B of FIG Figure 8A .

Figures 9A and 9B

show the third fitting arrangement not according to the invention in a view from above with the scissor fitting open and closed.

Figures 10A to 10C

show the third fitting arrangement not according to the invention in a perspective view, a side view and a detailed view C of FIG Figure 10B .

Each of the fitting arrangements 11 shown in the figures comprises a scissor fitting 13, which has a scissor arm 15, a scissor link 17 and a scissor faceplate 19. The scissor arm 15 and the scissor link 17 are elongated and articulated to one another at an articulation point 21, the articulation point 21 being arranged at one end of the scissor link 17 but at a distance from one end of the scissor arm 15.

The scissors faceplate 19 can be attached to an upper side of a sash, not shown, of a window, a door or the like and is used to connect the scissor fitting 13 to the sash. The scissors faceplate 19 has a first coupling point 23 at which the scissor link 17 is articulated to the scissor faceplate 19 at the end opposite the articulation point 21 and can thus be coupled indirectly to a respective wing.

The scissor arm 15 is thus connected on the one hand to the scissors faceplate 19 via the scissor link 17. On the other hand, the scissor arm 15 also engages directly with an end adjacent to the articulation point 21 in an elongated hole 25 of the scissor faceplate 19, so that the scissor arm 15 is articulated to the scissor faceplate 19, although this coupling does not have a fixed coupling point, but along the extension of the elongated hole 25 is variable. With this arrangement, the scissor fitting 13 can be in a, for example, in Fig. 4 and 6th Shear open position shown. The elongated hole 25 limits how far the scissor fitting 13 can be opened (in Fig. 4 and 6th the maximum open position is shown).

With the end further spaced from the articulation point 21, the scissor arm 15 is coupled to a hinge bracket 31 via a connecting component 27 at a second coupling point 29 (cf. Figures 3A and 3B as well as 5A and 5B). Via this hinge bracket 31, the scissor fitting 13 can be pivotably mounted on a scissor bearing, not shown, attached to the frame. In this way, the scissor fitting 13 can couple a sash to the frame and stabilize the sash when the sash is opened in rotation and tilted with respect to the frame. The connecting component 27 is designed as a support bracket in the form of an angle with two legs, which is connected with one leg to the scissor arm 15 and with the other leg to the hinge bracket 31.

In the case of the Fig. 1 and 2 As shown in the embodiment of a fitting arrangement 11 according to the invention, the scissor arm 15 and the support bracket 27 are not rigidly coupled to one another, but rather coupled in a longitudinally displaceable manner relative to one another via a coupling element designed as a one-way coupling 33. The one-way clutch 33 is designed in such a way that the scissor arm 15 can be displaced in the direction of the hinge bracket 31 relative to the support bracket 27, but is blocked against displacement in the opposite direction. In this way, the effective length of the scissor fitting 13 can be automatically shortened when the scissor arm 15 is urged in the direction of the hinge bracket 31. An automatic extension is excluded.

In the Figures 2A and 2B the one-way clutch 33 is shown enlarged. It can be seen in this that the one-way clutch 33 has a latching device 35 which comprises a toothing 37 on the support bracket 27 and a counter-toothing 39 arranged on the scissor arm 15. The counter-toothing 39 is formed on a pawl 41 pivotably mounted on the scissor arm 15. The pawl 41 is between Figures 2A and 2B Positions shown pivotable, so that the pawl 41 with the counter-toothing 39 in the through the toothing 37 formed locking recesses engage as shown or can be released from these. The pawl 41 is in this case by a spring element (not shown) in the in Figure 2A engaging position shown biased.

The tooth flanks of the toothing 37 pointing towards the belt angle 31 are oriented perpendicular to the longitudinal axis L of the scissor arm 15, while the tooth flanks pointing away from the belt angle 31 are oriented obliquely to the longitudinal axis L. To this end, the tooth flanks of the counter-toothing 39 pointing away from the belt angle 31 are oriented perpendicular to the longitudinal axis L, while the tooth flanks pointing towards the belt angle 31 are oriented obliquely to the longitudinal axis L. As a result, when a displacement force is exerted on the scissor arm 15 in the direction pointing away from the hinge bracket 31 (in Fig. 1 and 2 : to the left) the adjacent vertical tooth flanks of the toothing 37 and the counter-toothing 39 block a displacement movement of the scissor arm 15 relative to the support bracket 27. If, on the other hand, a displacement force acts in the opposite direction, the obliquely aligned tooth flanks of the toothing 37 and the counter-toothing 39 slide along one another, as a result of which the pawl 41 is raised against the spring preload and enables a sliding movement of the scissor arm 15 relative to the support bracket 27. As soon as a toothing is overcome by the displacement, the pawl 41 swings back again due to the bias and again engages the toothing 37 with the counter-toothing 39 so that the relative alignment of the scissor arm 15 with respect to the carrying handle 27 is secured again.

In this way, the embodiment according to the invention enables an automatic shortening of the effective length of the scissor fitting 13 when the scissor arm 15 is pushed in the direction of the hinge bracket 27, as is the case in particular when the sash runs onto the frame when the pivoted sash is closed. A lengthening of the effective length is against it not automatically possible, but only by manually releasing the pawl 41. The pawl 41 is mounted on the underside of the scissor arm 15 facing a respective wing and is thus protected against unintentional adjustment. In this case, however, a recess is provided in the scissor arm 15 through which access to the pawl 41 is made possible from the top of the scissor arm 15. Thus, the pawl 41 can be actuated through the recess 43 to move it into the in Figure 2B to pivot the position shown and thus to enable a manual extension of the effective length of the scissor fitting 13.

The ones in the Fig. 3 and 4th or 5 and 6, the first and second fitting arrangements 11, which are not according to the invention, differ from the above-described embodiment of a fitting arrangement 11 according to the invention essentially in that the scissor arm 15 is not displaceable with respect to the support bracket 27, but is rigidly connected to the support bracket 27, and that instead, the articulation point 21, at which the scissor arm 15 is articulated to the scissor link 17, is not fixed, but variable. This is achieved in that the scissor link 17 has a pin 45 for coupling to the scissor arm 15, which pin engages in an elongated hole 47 formed in the scissor arm 15. The articulation point 21 is then defined by the position of the pin 45 in the elongated hole 47 and is thus variable within the framework specified by the extent of the elongated hole 47.

To at least in the in the Figures 3A to 3C 5A to 5C, respectively, in the closed state of the scissor fitting 13 to define the articulation point 21 and thus the effective length of the scissor fitting 13, a toothing 49 is formed on the scissor arm 15 and a corresponding counter-toothing 51 on the scissor link 17. The toothing 49 and the counter-toothing 51 are each formed on the longitudinal side of the scissor arm 15 or of the scissor link 17 pointing in the tilt opening direction. When closed of the scissor fitting 13, i.e. when the scissor arm 15 and the scissor link 17 are aligned parallel to one another, the toothing 49 and the counter-toothing 51 mesh with one another as shown and thus determine the position of the pin 45 in the elongated hole 47. As long as the scissor fitting 13 remains closed, the effective length of the scissor fitting 13 is consequently fixed and is therefore retained in the state set in this way, in particular during a rotary opening of the sash.

If, however, the wing is tilted open, the scissor fitting 13 shears open, whereby the toothing 49 and the counter-toothing 51 are disengaged so that the articulation point 21 can change. Since the wing in the tilt-open state rests on the frame with its side facing the tilt axis, it is correctly aligned so that the articulation point 21 inevitably assumes the correct position within the elongated hole 47 when the wing is closed and then through the renewed meshing of the toothing 49 and the counter-toothing 51 is held in this position. Thus, the effective length of the scissor fitting 13 can be automatically adjusted to the correct length when the tilt-open sash is closed and is retained when the sash is opened to rotate.

As in particular in the Figures 4A and 4B can be seen, is with the first fitting arrangement ( Fig. 3 and 4th ) in contrast to the second fitting arrangement ( Fig. 5 and 6th ) the counter-toothing 51 is designed to be pivotable on the scissor link 17. The mating teeth 51 can be between the in the Figures 3A to 3C shown, to the longitudinal extent of the scissors arm 17 parallel position and in Figures 4A and 4B shown, in the direction of the toothing 49 pivoted position, in which it is biased by a spring element 53 in the form of a spring tongue, can be pivoted. In addition, the end of the otherwise linearly extending counter-toothing 51 facing the toothing 49 is rounded. This course of the counter-toothing 51 and the spring preload When the scissor fitting 13 is closed, this rounded end first engages the toothing 49, which, as already described, tends to set an effective length of the scissor fitting 13 that is slightly shorter than the position of the articulation point 21 predetermined by the sash resting on the frame.

A similar effect is achieved with the second fitting arrangement according to FIGS Fig. 5 and 6th reached. There, however, the toothing 49 and the counter-toothing 51 are not designed to be pivotable. Instead, however, as particularly in the Figures 6B and 6C It can be seen that the pin 45 has a radial extension 55 and an internal toothing 57 is formed on the elongated hole 47. The radial extension 55 is oriented in such a way that it does not engage in the internal toothing 57 when the scissor fitting 13 is sheared, that is to say when the sash is open to tilt. The pin 45 can thus assume different positions in the elongated hole 47. When the scissor fitting 13 is closed, the pin 45 assumes the position which corresponds to a correct effective length of the scissor fitting 13 and is predetermined by the sash resting on the frame. In addition, the pin 45 rotates in the elongated hole 47 so that the extension 55 is brought into engagement with the internal toothing 57. Due to the rotation of the pin 45 with the extension 55, the extension 55 tends to engage the internal toothing 57 in such a way that the articulation point 21 is pushed into a position corresponding to a slightly shortened effective length, even before the toothing 49 and the counter-toothing 51 intermesh and additionally secure the set effective length.

The ones in the Figures 7 , 8th , 9 and 10 The third fitting arrangement shown, not according to the invention, differs essentially from the above-described first and second fitting arrangement not according to the invention in that a counter-toothing 59 is formed on an upper side of the stay arm 17 facing the stay arm 15 and a clamping part 61, which is arranged between the scissor arm 15 and the scissor link 17, has a toothing 63 which can come into engagement with the counter-toothing 59.

The scissors link 17 is articulated to the scissors faceplate 19 at the first coupling point 23 and is articulated to the scissor arm 15 at the articulation point 21 and is displaceable transversely to an axis of rotation 75 of the articulation point 21. In addition to the counter-toothing 59 on the upper side of the scissor arm 17, the scissor arm has a lateral counter-toothing 65 (see Figure 8B ), which is opposite a lateral toothing 67 of the clamping part.

The clamping part 61 is elongated and largely U-shaped. The toothing 63 is formed on the side of the clamping part 61 opposite the upper side of the scissors arm 17. The lateral toothing 67 is formed on one of the inner side surfaces of the clamping part 61, specifically on the side surface which transfers a force to the scissor link 17 when the scissor fitting is closed from the tilted position. If the mating teeth 59 and 65 are not in engagement with the teeth 63 and 67, the clamping part 61 and the scissors arm 17 can move relative to one another along their longitudinal axes, since the pin 45 is displaceable in the elongated hole 47 along the longitudinal axes.

On the top of the clamping part 61 are two elongated elevations 69 (see Figure 9A and 10C ), which are each arranged on opposite sides of the articulation point 21 in opposite end regions of the clamping part 61. The height of these elevations 69 corresponds approximately to the height of the lateral counter-toothing 65.

In the following it is first illustrated how the toothings 63, 67 of the clamping part 61 come into engagement with the counter-toothings 59, 65 of the scissors arm 17 and are released again. It then explains how to use this mechanical structure, the effective length of the scissors fitting 13 can be corrected.

In an open position of the scissor fitting 13 ( Fig. 7 , Figure 9A ) the elevations 69 are spaced apart from the scissor arm 15. If the sash is now closed from a tilted position, the scissor fitting 13 begins to shear shut. The pivoting movement of the scissors arm 17 is inhibited by friction, which is generated at the first coupling point 23 between the scissors arm 17 and the scissors faceplate 19, for example by a brake disk 77. As a result, when the scissor fitting 13 is closed, the scissor link 17 comes into contact with the clamping part 61 on the sides of the counter-toothing 65 and the toothing 67, as a result of which the counter-toothing 65 engages in the toothing 67. Simultaneously or by further shearing, the elevations 69 come into contact with the sides of the scissor arm 15 and are made by chamfers 71 on the sides of the scissor arm 15 and / or face bevels 73 on the elevations 69 in the direction of the scissor arm 17, ie in Fig. 7 down, pressed. As a result, the clamping part 61 is displaced along the axis of rotation 75 at the articulation point 21, so that the toothing 63 comes into engagement with the counter-toothing 59.

If the scissor fitting 13 is opened again by tilting the sash, in an open state ( Figure 9A ) the elevations 69 are no longer acted upon by the scissor arm 15 with a force in the direction of the scissor arm 17. Due to a relative movement between the scissors arm 17 and the clamping part 61, the helical teeth of the mating teeth 59 and the teeth 63 can slide on one another. At the same time, the toothing 67 and the mating toothing 65 are decoupled by moving the scissors arm in the direction of the side of the clamping part 61 opposite the toothing 67. This results in the clamping part 61 being able to slide on the scissors arm 17 along its longitudinal axis and, on the other hand, being able to move away from the scissors arm 17 again along the axis of rotation 75.

In the manner described, an engagement of the toothings 63, 67 in the counter-toothing 59, 65 can be realized and canceled again. The following illustrates how the effective length of the scissor fitting 13 can be corrected with the aid of these teeth.

If the effective length of the scissor fitting 13 is too great and thus the wing "hangs", ie the side of the wing remote from the hinge is too low, the wing initially runs onto the frame on its lower side when it is turned and is thereby forcibly lifted and thus corrected in his position. With the sash open and closed ( Figure 9B , 10A, 10B, 10C ) the toothing 63 is in engagement with the counter-toothing 59 and possibly also the toothing 67 with the counter-toothing 65, so that the effective length of the scissor fitting 13 cannot be shortened at the time of closing from a rotationally open state. The scissor fitting 13 is braced instead.

If the sash is now tilted open, the position of the sash remains corrected, since the lower side of the sash still rests on the frame. With the sash tilted open ( Fig. 7 , 8A , 8B , 9A ) decouple the teeth 63, 67 from the mating teeth 59, 65, as described above. Therefore, the clamping part 61 and the scissor link 17, guided by the pin 45 in the elongated hole 47, can move relative to one another along their longitudinal axes. The tension of the scissor fitting 13 is reduced by the relative movement between the clamping part 61 and the scissor link 17. If the wing is now closed (from the tilted position), the toothing 67 first engages in the counter-toothing 65, as already described, whereby the desired, shortened, effective length of the scissor fitting 13 is determined. When the sash is closed further, the toothing 63 and the counter-toothing 59 also mesh with one another, through which the effective length achieved is ultimately maintained when the wing is completely closed becomes. Such a configuration of the fitting arrangement thus ensures that the effective length of the scissor fitting 13 is automatically determined so that the sash does not run onto the frame when it is closed from the rotatably open state. Any undesired renewed lowering of the sash that may occur due to wear is thus reliably and automatically compensated for by a further shortening of the effective length of the scissor fitting 13 during tilt closing.

The above-described embodiment of a fitting arrangement according to the invention as well as the first, second and third fitting arrangement not according to the invention have in common that they achieve an automatic correction of a misalignment of the sash relative to the frame in a structurally simple manner by taking advantage of the fact that the sash when closed by the The frame is inevitably pushed into a correct position, and in that the respective fitting arrangement 11 enables the effective length of the scissor fitting 13 to change, in particular shorten, when closing, but is then blocked against renewed lengthening, in particular when the sash is turned open.

Reference list

11

Fitting arrangement

13th

Scissor fitting

15th

Scissor arm

17th

Scissor handlebars

19th

Scissor faceplate

21

Articulation point

23

first coupling point

25th

Long hole

27

Connecting component

29

second coupling point

31

Hinge angle

33

One-way clutch

35

Locking device

37

Interlocking

39

Mating teeth

41

Pawl

43

Recess

45

Cones

47

Long hole

49

Interlocking

51

Mating teeth

53

Spring element

55

Appendix

57

Internal gearing

59

Mating teeth

61

Clamping part

63

Interlocking

65

lateral mating teeth

67

lateral serration

69

Surveys

71

Chamfers

73

Slopes

75

Axis of rotation

77

Brake disc

L.

Longitudinal axis

Claims (8)

1. A fitting arrangement (11) for a window, a door or the like having a scissor fitting (13) comprising a scissor arm (15) and a stay arm (17) which is coupled to the scissor arm (15) in an articulated manner, wherein the stay arm (17) can be coupled at a first coupling point (23) to a leaf of the window or of the door, and wherein the scissor arm (15) can be coupled at a second coupling point (29) to a scissor bearing which is fastenable to a frame of the window or of the door to pivotably support the leaf at the frame,
   wherein two parts of a support structure which comprises the scissor fitting (13) and the scissor bearing are variably fixable relative to one another in different positions to adjust the effective length of the scissor fitting (13), characterized in that
   the two parts are displaceable relative to one another and are connected to one another via at least one one-way clutch (33) which forms an adjustable coupling element, which enables a displacement movement of the parts in one direction and blocks it in the other direction and which is configured to be automatically set on the closing of the leaf such that an incorrect position of the leaf is corrected by shortening or lengthening the effective length of the scissor fitting (13),
   with the one-way clutch (33) having a latching device (35) which comprises a toothed arrangement (37) formed at one of the displaceable parts and a counter-toothed arrangement (39) which cooperates with the toothed arrangement (37) and which is formed at the other part,
   with the toothed arrangement (37) having an asymmetrical tooth shape, and with the tooth flanks of the toothed arrangement (37) which face toward one side extending obliquely to a longitudinal axis (L) of the scissor arm (15) and the tooth flanks of the toothed arrangement (17) which face toward the opposite side extending at a right angle to the longitudinal axis (L).
2. A fitting arrangement in accordance with claim 1,
   characterized in that
   the one-way coupling (33) is configured to enable a displacement movement of the parts which shortens the effective length of the scissor fitting (13) and to block a displacement movement of the parts which lengthens the effective length of the scissor fitting (13).
3. A fitting arrangement in accordance with claim 1 or claim 2,
   characterized in that
   the one-way coupling (33) is effective between an end region of the scissor arm (15) at the scissor bearing side and a connection component (27) provided for fastening the scissor arm (15) to the scissor bearing, in particular a stay support or a rebated scissor stay support arm (31).
4. A fitting arrangement in accordance with at least one of the preceding claims,
   characterized in that
   the one-way coupling (33) is integrated into a rebated scissor stay support arm (31) of the scissor fitting (13) or into the scissor bearing.
5. A fitting arrangement in accordance with at least one of the preceding claims,
   characterized in that
   the latching device (35) comprises a pawl (41) which is movably supported, in particular pivotably supported, at one of the displaceable parts and which engages into latching recesses of the other part which are formed by the toothed arrangement (37).
6. A fitting arrangement in accordance with claim 5,
   characterized in that
   the pawl (41) is preloaded by means of a spring element into a blocking position which blocks any displacement movements of the parts.
7. A fitting arrangement in accordance with claim 5 or claim 6,
   characterized in that
   the pawl (41) is directly supported at an end region of the scissor arm (15) at the scissor bearing side.
8. A fitting arrangement in accordance with at least one of the claims 5 to 7,
   characterized in that
   the pawl (41) is supported at a lower side of the scissor arm (15) facing the leaf of the window or of the door, with a recess (43) of the scissor arm (15) enabling at least partial access to the pawl (41) from the upper side of the scissor arm (15).

Images