EP3276107B1 - Window handle fitting - Google Patents

Description

The invention relates to a window handle fitting with a window gear installed in a window sash, which comprises a gear element rotatable about an axial direction, in particular a gear nut, for opening and closing a window, with a pusher element, and with a torque transmission element, in particular a square element, which is in a Mounted state of the window handle fitting is releasably connected to the gear element in order to transfer a pivoting movement of the pusher element into a rotation of the gear element about the axial direction, and in the assembled state the pusher element is attached to the torque transmission element and releasably connected to it in a captive manner. A window handle fitting in the context of the present application means that part of the window fitting that is arranged in the area of the window handle. A window fitting is to be understood as the mechanism for opening and closing the window or for locking and unlocking it. In order to be able to operate the mechanism of the window handle fitting, a window handle according to DIN 18267: 2015-02 is attached to the window handle fitting. A window handle fitting is to be distinguished from a door fitting or door lock or a door lock mechanism, which is to be connected to an associated door handle in accordance with DIN 18255 for actuation. There are different installation conditions for door locks and different requirements apply than for window handle fittings, e.g. stands for door locks usually more space available. Door locks are usually equipped with a spring mechanism that biases the door handle into a certain position. Door fittings are usually equipped with a door handle from two sides, while window handle fittings are only equipped with a corresponding window handle on one side.

Known from the prior art are window handle fittings with the features just mentioned, in which the pusher element and the torque transmission element are connected to one another. The connection of the pusher element and the torque transmission element can either be detachable or non-detachable. In conventional window handle fittings, the pusher element and torque transmission element are often pressed together so that they are permanently connected to one another.

the AT 377 312 shows a trigger pin which can be expanded by means of a clampable sleeve.

the DE 1 257 035 an expandable interchangeable pin which can be expanded by means of a pressure screw arranged in the interchangeable pin.

the EP 1 114 905 A1 shows a mounting sleeve for the fixed attachment of a door handle.

the DE 1 117 442 and DE 42 34 870 each show latching connections for attaching a pusher element to a square.

In the area of a neck section of the pusher element, that is to say a section of the pusher element which extends in the axial direction, a substructure is arranged in conventional window handle fittings. The substructure is rotatably connected to the pusher element. In turn, there are slots for screws on the substructure. The substructure is fastened to the window sash by means of screws which are passed through the receptacles, and thus indirectly also the pusher element or the torque transmission element connected to it is connected to the window sash. Usually a cover rosette is provided to cover the substructure, which is clipped onto the substructure and is also arranged on the neck section of the pusher element. If the cover rosette is removed, the screws on the substructure are accessible and can be removed. By removing the screws, the pusher element, the substructure and the torque transmission element can be removed from the window sash.

A problem with such window handle fittings is that the fastening by means of the substructure requires installation space that extends beyond the outline of the neck section of the pusher element. With conventional window handle fittings, care must also be taken to ensure that the screws are attached to the substructure without damaging the window sash. For example, the screws of the substructure can be inserted in the wrong places in the window sash, which means that the window sash has to be replaced.

The object of the present invention is to provide a window handle fitting which is space-saving and can be securely attached to the window sash in a simple manner. This object is achieved by a window fitting with the features of claim 1. The window handle fitting according to the invention is characterized in that, in the assembled state, the torque transmission element is fastened in a form-fitting manner, engaging behind the gear element in the axial direction, in such a way that the pusher element can be detached from the torque transmission element without the need to release the fastening of the torque transmission element with the transmission element, which engages behind in an axial direction, in a form-fitting manner , wherein the fastening of the torque transmission element, which engages behind in a form-fitting manner in the axial direction, comprises a screw which, in the assembled state, extends in the axial direction through the torque transmission element and is screwed to a counterpart on the window gearbox side.

As a result, the torque transmission element is fastened more or less independently with respect to the transmission element. The pusher element can be added or removed independently of the torque transmission element. The pusher element is therefore fastened independently of the torque transmission element. For example, the pusher element can be attached to the torque transmission element. This eliminates the need to attach the pusher element to the substructure. In other words, a substructure is either not necessary or can be designed in such a way that it is not used for fastening. As a result, any substructure can be made much more space-saving and smaller.

It is particularly advantageous if, in the assembled state, the neck section of the pusher element, which extends in the axial direction, extends in the radial direction at least as far as a substructure of the window handle fitting. In this embodiment, when looking along the axial direction, the substructure is virtually covered by the neck section of the pusher element. As a result, the entire construction is designed to be particularly space-saving and visually appealing. In addition, the cleaning of the window sash of this type is particularly simple, since cleaning only has to be carried out around the outlines of the neck section.

The formation of the torque transmission element with a screw represents a structurally uncomplicated, efficient and safe way of fastening the torque transmission element with respect to the transmission element.

It is also advantageous if the counterpart is non-rotatably connected to the gear element. In this embodiment, the torque transmission element can be braced against the gear element via the screw. When the window handle or the pusher element is actuated, the pusher element, torque transmission element, gear element and counterpart then pivot together. In this embodiment, the counterpart can advantageously be designed as part of the gear element or integrated into it, which makes the assembly of the individual components of the window handle fitting simple. For example, the counterpart can be designed as a nut which is fastened to the gear element via an injection-molded part. The counterpart can then almost in one work step together with the transmission element are inserted into the window sash, the entire window construction is closed and then the torque transmission element can be screwed to the counterpart on the window transmission side by means of the screw, whereby the torque transmission element is attached to the transmission element.

Alternatively, it is possible that the counterpart is connected to the window gear or the window sash in a rotationally fixed manner. In this embodiment, the counterpart is arranged to be rotatable with respect to the gear element, but non-rotatably with respect to the other components of the window gear and the window sash. The screw for fastening the torque transmission element is in turn screwed into the counterpart and extends through the torque transmission element. When the window handle is operated, the torque transmission element is rotated relative to the screw and the counterpart and rotates the gear element. The advantage of this embodiment is that the counterpart can be designed as part of the window gear or the window sash, or can be fastened to the window gear or the window sash before the gear element is installed. For example, the counterpart can be designed as a nut which has an extrusion coating that engages in corresponding recesses on the window profile or in components of the window gear. In this way, an anti-rotation lock with respect to the window profile can be implemented in a simple manner. As an alternative to this, the counterpart can also be designed as a plate with blades with a thread, the blades of the plate being able to engage, for example, in screw receptacles of a conventional window gear. This will result in A rotation lock with respect to the window profile is implemented in a similarly simple manner. Such conventional screw receptacles are used to accommodate the screws by means of which the substructure is usually attached to the window sash or the window gear in conventional window handle fittings.

It is particularly advantageous if the counterpart extends at least partially in the radial direction beyond the gear element. Such an extension of the counterpart, which is greater in the radial direction than the extension of the gear element, enables a simple implementation of the non-rotatable fastening of the counterpart to the window sash or the window gear. Fastening interventions for the counterpart can be formed at a distance from the gear element in the radial direction.

It is particularly advantageous if the counterpart is designed separately from the gear element and, when the window sash is installed, can be inserted into the window sash independently of the window gear and connected to it or the window gear in a rotationally fixed manner. This makes the assembly of the counterpart particularly simple and the counterpart can, for example, already be integrated into the profile of the window sash by the manufacturer. A rotationally fixed connection to the window gear is to be understood as meaning that the counterpart is connected to the window gear in such a way that the gear element can rotate in the window gear and there is a relative movement between the counterpart and the gear element. The counterpart is therefore non-rotatable with respect to the others Components of the window mechanism connected, but there can be a relative rotational movement between the counterpart and the transmission element.

In an advantageous development of the invention, the pusher element can be fastened in at least two axial positions on the torque transmission element in a rotationally fixed and axially captive manner. As a result, the insertion depth of the torque transmission element can be determined independently of the design of the pusher element. As a result, a pusher element can be used for torque transmission elements of different lengths or torque transmission elements inserted into the window sash at different depths. This makes the window handle fitting according to the invention particularly flexible and usable for a large number of applications.

It is also advantageous if the torque transmission element has at least one recess into which a pusher element-side projection can be brought into engagement, the pusher element being positively locked behind in the axial direction with the torque transmission element when the projection is in engagement with the recess. This represents an easy-to-manufacture, but effective, possibility of axially fastening or locking the pusher element to the torque transmission element.

It is particularly advantageous if the torque transmission element has at least two depressions in which the projection on the pusher element can be brought into engagement, each depression being assigned a different axial position of the pusher element relative to the torque transmission element.

In this way, a structurally simple to produce but efficient possibility of axial adjustment of the pusher element is realized. By engaging the projection in the various recesses on the torque transmission element, the pusher element can be fastened in different axial positions relative to the torque transmission element.

It is particularly preferred if the projection on the pusher element side comprises a spring element, so that the projection is resiliently mounted in the radial direction. As a result, there is a certain amount of play in the lead. This in turn enables the pusher element to be slipped onto the torque transmission element and the projection to be pressed against the corresponding recess on the torque transmission element by the spring element. The projection then latches into the recess, as it were, when the projection is in the corresponding position. This results in a certain resistance to further axial movement of the pusher element. The pusher element can then be fixed with respect to the torque transmission element.

It is particularly advantageous if the projection can be braced in the radial direction into the depression or depressions by means of tensioning means, in particular a grub screw. The use of the bracing means, or the grub screw just mentioned, is particularly advantageous in combination with the resilient mounting of the projection. As a result, the pusher element with a pretensioned spring element can be placed on the torque transmission element and displaced in the axial direction along the torque transmission element until the pusher element engages. The pusher element is then in can no longer be moved in the axial direction and is attached to the torque transmission element.

The present invention also relates to a window sash which comprises a window handle fitting according to one or more of the embodiments just described.

Further features, possible applications and advantages of the invention emerge from the following description of several exemplary embodiments of the invention, which are explained with reference to the drawings.

Figur 1

eine teilgeschnittene Darstellung einer ersten Ausführungsform des erfindungsgemäßen Fenstergriffbeschlags;

Figur 2

eine vergrößerte Darstellung eines Teilbereichs aus Figur 1;

Figur 3

eine Darstellung entsprechend Figur 2, in der ein Drückerelement von einem Momentenübertragungselement gelöst ist;

Figur 4

eine Darstellung entsprechend Figur 1 einer alternativen Ausführungsform;

Figur 5

einen vergrößert dargestellten Teilbereich von Figur 4;

Figur 6

eine Darstellung entsprechend Figur 1 einer weiteren alternativen Ausführungsform; und

Figur 7

einen vergrößert dargestellten Teilbereich von Figur 6.

Show it:

Figure 1

a partially sectioned view of a first embodiment of the window handle fitting according to the invention;

Figure 2

an enlarged view of a partial area Figure 1 ;

Figure 3

a representation accordingly Figure 2 in which a pusher element is released from a torque transmission element;

Figure 4

a representation accordingly Figure 1 an alternative embodiment;

Figure 5

an enlarged portion of Figure 4 ;

Figure 6

a representation accordingly Figure 1 another alternative embodiment; and

Figure 7

an enlarged portion of Figure 6 .

In Figure 1 a window handle fitting according to the invention is provided with the reference numeral 10. A window sash bears the reference number 12. A pusher element 14 is arranged on the window sash. The pusher element 14 has a neck section 16 and a handle section 18.

A window gear 20 is arranged in the interior of the window sash 12. The window gear 20 comprises a gear element 22 designed as a gear nut for opening and closing a window which comprises the window sash 12 shown.

The gear element 22 is connected to the pusher element 14 via a torque transmission element 24 designed as a square element. The torque transmission element 24 extends along an axial direction 26. The torque transmission element 24 is fastened in the axial direction 26 in a form-fitting manner, engaging behind the transmission element 22, via a screw 28. The screw 28 is screwed to a counterpart 30 on the window transmission side. The counterpart 30 on the window gear side comprises a nut element 32, into which the screw 28 is screwed, and an encapsulation 34 made of plastic, which is non-detachably and non-rotatably connected to the nut element 32. The counterpart 30 is non-rotatably connected to the window gear 20 via the extrusion coating 34. To form the non-rotatable In connection with the window gear 20, the counterpart 30 on the encapsulation 34 has axial projections 36 which are shown in FIG Figure 2 can be clearly seen, which engage in corresponding recesses in the window mechanism 20.

The fastening of the pusher element 14 to the torque transmission element 24 is described below. In the pusher element 14, a pusher sleeve 38 is arranged, which has an inner contour that is complementary to the square-shaped outer contour of the torque transmission element 24. The handle bushing 38 is inserted into a guide bushing 40 on the side of the window sash. The torque transmission element 24 extends through the handle bushing 38.

The guide bush 40 does not represent a substructure in the conventional sense, but in the present case it is the part of the window handle fitting 10 which most closely corresponds to a substructure. In a radial direction 41, the neck section 16 extends further than the substructure formed by the guide bushing 40.

On the neck section of the pusher element 14, a tensioning means 42 embodied in the present case as a grub screw 42 is arranged. The grub screw 42 is arranged in such a way that it can pressure-load a spring element 44. The spring element 44 extends into a projection 46 on the pusher element side. Arranged on the torque transmission element 24 are five depressions 48, of which only one in each case bears a reference number in the figures. However, it is also conceivable to provide more or fewer depressions. It is preferred to provide the torque transmission element 24 with a multiplicity of depressions, so that there is great flexibility in what the The insertion depth of the pusher element is concerned, as a result of which the torque transmission element 24 and the pusher element 14 can be used in different window sashes without having to be adapted to the different dimensions of the window sashes.

In the in Figure 1 and 2 As shown in the illustration, the projection 46 is locked in the middle of the five depressions 48. The grub screw 42 is screwed into the pusher element 14 in such a way that it loads the spring element 44 with pressure. The projection 46 is braced into the recess 48 by the pressure load on the spring element 44. Each of the depressions 48 is assigned a different axial position of the pusher element 14 with respect to the torque transmission element 24. This means that when the pusher element-side projection 46 is brought into engagement in a respective recess 48, the pusher element 14 is in different axial positions relative to the torque transmission element 24. If the pusher element-side projection 46 is brought into engagement in one of the depressions 48, then the pusher element 14 is interlocked with the torque transmission element 24 in the axial direction in a form-fitting manner.

Figure 3 shows the window handle fitting 10 from Figures 1 and 2 in the representation of Figure 2 with detached pusher element 14. To detach the pusher element 14, the grub screw 42 is loosened so that the tensioning of the spring element 44 is released and the projection 46 is no longer tensioned in the recess 48. In the in Figure 3 The state shown, the pusher element 14 is detached from the torque transmission element 24, but the torque transmission element 24 is in such a form-fitting manner behind in the axial direction via the screw 28 26 attached to the transmission element 22 so that the pusher element 14 can be released from the torque transmission element 24 without the need to release the fastening of the torque transmission element 24 with the transmission element 22, which engages behind in a form-fitting manner in the axial direction.

Figure 4 shows an alternative embodiment of the window handle fitting 10 according to the invention. The embodiment of FIG Figure 4 differs from those in the Figures 1 to 3 Embodiments shown that the counterpart 30 is rotatably connected to the gear element 22. The counterpart 30 in turn comprises a nut element 32 and an extrusion coating 34. The extrusion coating 34 is in the embodiment of FIG Figure 4 however, it is designed in such a way that it is fastened in a rotationally fixed manner with respect to the gear element 22.

A third embodiment of the window handle fitting 10 according to the invention is shown in FIG Figures 6 and 7th shown. The ones in the Figures 6 and 7th The embodiment shown comprises a counterpart 30 which has two wing-like extensions 50. The wing-like extensions 50 of the counterpart 30 engage in corresponding receptacles 52 which are arranged on the window mechanism 20. The window mechanism 20 is a conventional window mechanism 20, and the receptacles 52 are normally used, ie when used with a conventional window handle fitting, to accommodate screws that are introduced into the material of the window sash 12 through the substructure in a conventional window handle fitting and extend into the receptacles 52 of the window mechanism 20.

When the window handle fitting according to the invention is in operation, the pusher element 14 is pivoted about the axial direction 26. The pivoting movement of the pusher element 14 is converted into a rotation of the gear element 22 about the axial direction 26 via the torque transmission element 24.

In the embodiments according to Figures 1 to 3 6 and 7, respectively, the counterpart 30 is connected non-rotatably with respect to the window sash 12. In these embodiments, the pivoting movement of the pusher element 14 leads to a rotation of the torque transmission element 24, but the screw 28 and the counterpart 30 each remain stationary with respect to the window sash 12 Direction 26 around screw 28.

In the case of the Figures 4 and 5 The embodiment shown, the counterpart 30 is rotatably connected to the gear element 22. A pivoting movement of the pusher element 14 leads to a rotation of the torque transmission element 24, the screw 28, the gear element 22 and the counterpart 30 around the axis of rotation 26.

When assembling the window handle fitting according to the invention are in the embodiment according to the Figures 1 to 3 first the gear element and the counterpart are inserted into the window sash 12. Subsequently, the torque transmission element 24 is fastened by means of the screw 28 to the transmission element 22 in the axial direction in a form-fitting manner, engaging behind the transmission element. As the last step, the pusher element 14 is pushed onto the torque transmission element 24.

When the pusher element 14 with the pre-tensioned grub screw 42 is slipped onto the torque transmission element 24, the projection 46 engages in one of the recesses 48, depending on how far the pusher element 14 is pushed onto the torque transmission element 24. The pusher element 14 is pushed onto the torque transmission element 24 until it is in its desired end position. This desired end position is usually reached when the pusher element 14 strikes the guide bushing 40 with its neck section. To release the pusher element 14, the grub screw 42 is loosened. This releases the tension of the projection 46 so that it can slide out of the recess 48. The pusher element 14 is then withdrawn from the torque transmission element 24 along the axial direction. A corresponding situation is in Figure 3 shown. The pusher element 14 is thus detachable from the torque transmission element 24 without the need to release the fastening of the torque transmission element 24 with the transmission element 22, which engages behind in an interlocking manner in the axial direction 26 and which is implemented by screwing the screw 28 and counterpart 30. This is the case with all three embodiments.

If the window handle fitting 10 is to be loosened further, the screw 28 is loosened from the counterpart 30. The torque transmission element 24, together with the screw 22, can then be pulled out of the gear element 22.

Claims (11)

1. Window handle fitting (10) with a window gear (20) installed in a window part (12), the gear comprising a gear element (22), in particular a gear nut rotatable around an axial direction (26) for opening and closing a window, with a latch element (14) and with a moment transmission element (24), in particular a square element which is detachably connected with the gear element (22) in an installed state of the window handle fitting (10) to transmit a pivoting motion of the lash element (14) in a rotation of the gear element (22) around the axial direction (26), and wherein in the installed state the latch element (14) is put on the moment transmission element (24) and connected thereto in a detachable manner secured against loss, characterized in that the moment transmission element (24) is attached in the installed state in a positive fit and in axial direction (26) engaging at the rear with respect to the gear element (22) in such a manner that the latch element (14) is detachable from the moment transmission element (24) without having to detach the positive fit engagement at the rear of the moment transmission element (24) with the gear element (22), wherein the positive fit engagement at the rear in axial direction (26) of the moment transmission element (24) comprises a screw (28) extending in the installed state in axial direction (26) through the moment transmission element (24) and being screwed into a counterpart (30) on the side of the window gear.
2. Window handle fitting (10) as claimed in claim 1, characterized in that in the installed state a collar section (16) of the latch element (14) extending in axial direction (26) extends in the radial direction at least as far as a substructure of the window handle fitting (10).
3. Window handle fitting as claimed in claim 1 or 2, characterized in that the counterpart (30) is connected to the gear element (22) in a rotationally fixed manner.
4. Window handle fitting as claimed in claim 1 or 2, characterized in that the counterpart (30) is connected to the window part (12) or the window gear (20) in a rotationally fixed manner.
5. Window handle fitting as claimed in claim 4, characterized in that the counterpart (30) extends at least in part in radial direction (41) beyond the gear element (22).
6. Window handle fitting as claimed in claim 4 or 5, characterized in that the counterpart (30) is made separate from the gear element (22) and can be inserted into the window part (12) and connected thereto in a rotationally fixed manner independent of the window gear (20) when the window part (12) is installed.
7. Window handle fitting (10) as claimed in one or more of the preceding claims, characterized in that the latch element (14) can be attached to the moment transmission element (24) rotationally fixed and axially secured against loss in at least two axial positions.
8. Window handle fitting (10) as claimed in one or more of the preceding claims, characterized in that moment transmission element (24) has at least one recess (48) into which a protrusion (46) on the side of the latch element can be engaged, wherein the latch element (14) is latched in axial direction (26) in a positive fit engagement from the rear with the moment transmission element (24), when the protrusion (46) is in engagement with the recess (48).
9. Window handle fitting (10) as claimed in one or more of the preceding claims, characterized in that the moment transmission element (24) has at least two recesses (48) into which the protrusion (46) on the side of the latch element can be engaged, wherein each recess (48) is associated with a different axial position of the latch element (14) with respect to the moment transmission element (24).
10. Window handle fitting (10) as claimed in one or more of the preceding claims 8 or 9, characterized in that the protrusion (46) on the side of the latch element comprises a spring element (44) or is in operative contact with a spring element, so that the protrusion (46) is spring-based in radial direction (41).
11. Window handle fitting (10) as claimed in one or more of the preceding claims 8 to 10, characterized in that the protrusion (46) can be biased in radial direction (41) into the recess (48) or the recesses (48), respectively, by means of a biasing means (42), in particular a grub screw (42).

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