Fitting a window or door

Abstract

Fitting for a window or door, comprising a push rod fitting cooperating with a handle, wherein the handle engages with a square in a driving connection with a pinion (3) of a push rod drive (1), wherein the pinion (3) is rotatably mounted in a housing (4) and meshes with a toothing of a displaceable drive rod (10), wherein the push rod fitting consists of at least the drive rod (10), to which at least one locking bolt is assigned that can be displaced into an unlocked position and a locked position by rotating the handle, wherein the drive rod (10) can be blocked in its mobility by a locking device (14), wherein the locking device (14) engages with a locking element (20) in a circumferential recess (21) of the pinion (3), and wherein the locking element (20) can be actuated via an electric actuator (22),wherein the coupling slide (26) cooperates with a displaceable coupling slide (26) which is coupled to the locking element (20), wherein the coupling slide (26) is mounted on a guide pin (27) and is supported in each direction of movement via a spring (28 or 29), characterized in that a slide (43) is mounted in the housing (4), which projects with an actuating section (44) into the wing bore for the square (2) and engages with a bracket (50) on the coupling slide (26).

Description

[0001] DE 202008012837 U1 discloses a window with a lockable fitting comprising at least one push rod extending at least over part of the circumference of the window sash and having and / or actuating locking elements acting between the window sash and a window frame, wherein the push rod is displaceable along an edge of the window sash. At least one locking element is mounted in the window frame so as to be displaceable transversely to the longitudinal extent of a frame part and is insertable into at least one locking recess in the push rod and / or a recess in the window sash. The push rod has a bore which, in a locked position, is congruent with the bore in the window sash, so that the locking element locking the push rod can be inserted into the bore of the push rod.

[0002] EP 3309333 B1 shows a device in which a locking device is assigned to the espagnolette fitting. The espagnolette can be adjusted to various switching positions via a handle. For this purpose, the operating handle engages with a square in a square opening of a pinion, which, with its peripheral toothing, is assigned to the espagnolette toothing of the espagnolette. A locking element of the locking device is assigned to the espagnolette, which engages in a recess in the espagnolette. The locking element can be actuated mechanically or via an electric actuator. The disadvantage of this is that the window user can continue to exert force on the espagnolette drive via the operating handle. The play of the square in the pinion and the pinion in the espagnolette lead to an unavoidable limited movement of the lever. In addition, the espagnolette can be elastically deformed from the pinion to the locking element.The user receives haptic feedback that the lever is only locked after a certain angular rotation. This misinterpretation causes more force to be applied, leading to further elastic and possibly plastic deformation.

[0003] Therefore, further developments provide for the locking of the handle, not the connecting rod. For this purpose, EP 3604719 B1 stipulates that the square of the handle engages a locking sleeve. The locking sleeve can be adjusted between a locked and a released position via an electric actuator. This achieves and signals immediate locking of the handle. An advantage of this design is that the actuator can be controlled via a central control unit that addresses a variety of handles. Furthermore, the easily accessible lever allows for subsequent installation.

[0004] Similar advantages are offered by the solution according to EP 3058154 B1, which features an electromechanical clutch for establishing a rotationally fixed connection between a door-side output shaft and a handle facing away from the door leaf. The output shaft is operatively connected to the driver element, which is shortened in terms of its longitudinal extension and is in the form of an actuating polygon. The locking mechanism is released without the use of a locking cylinder by appropriately controlling the electromechanical clutch. This clutch can be used to mechanically decouple the handle from the output shaft in such a way that actuating the handle no longer actuates the output shaft and thus the actuating polygon.The electromechanical clutch comprises a multitude of drive and clutch components that can be operatively connected to an associated electromechanical drive unit and actuated via an electric motor. The clutch movement occurs along the rotational or rotary axis of the output shaft. To create the necessary freedom of movement, the clutch mechanism extends across the entire neck section of the handle into the adjacent rosette of the door handle, with the free end of the actuating polygon being mounted in the rosette via the drive shaft. The disadvantages of the described solution are its complex technical design, high space requirements, and low axial strength.

[0005] DE 202024102517 U1 discloses a fitting in which a handle with a polygon engages with a pinion of a connecting rod drive. The connecting rod drive comprises a locking device with which the pinion can be locked against rotation. For this purpose, a locking element is mounted in the housing that supports the pinion. The locking element can be moved from a release position to a locked position via an electric drive. In order to be able to operate the connecting rod drive manually in the event of a drive failure, the known solution allows for emergency operation. For this purpose, the locking element can be pushed back with an L-shaped tool through the then exposed hole in the sash after the handle has been removed. The disadvantage of this is that the emergency operation tool must be kept ready for emergency operation.

[0006] The invention is based on the object of improving the fitting in such a way that the emergency operation can be carried out without requiring additional installation space, using elements on the fitting so that they are captively attached to the fitting.

[0007] To achieve this object, the invention provides for a fitting according to the preamble that a slide is mounted in the housing, which projects with an actuating section into the wing bore for the square and engages with a projection on the coupling slide.

[0008] The design allows the advantages of locking the push rod fitting in the chain of components close to the point of force application by the user to be retained. Furthermore, the arrangement utilizes the installation space of the push rod drive and can be integrated into its housing. Additional clearances for accommodating the locking device on the sash are therefore unnecessary. The existing locking device can remain unchanged.

[0009] A further development provides for the slider to engage the housing on both radial surfaces. This ensures that the fitting remains symmetrical and can be used for sashes that, due to the arrangement of the hinges, can be moved around an upright pivot axis mounted on the left or right. The handle is mounted on different sides of the gear in both applications.

[0010] It is cost-effective and space-saving if the slider is designed as a wire clamp.

[0011] This design can be advantageously further developed if the wire clamp has two guide sections located next to the actuating section. The guide sections, consisting of wire sections, are flat and require little installation space.

[0012] In order to improve the accessibility of the emergency actuation element, the actuating section protrudes from the guide sections in a bow-like manner.

[0013] It is further provided that the slide (43) can be fixed in both end positions with locking means. This allows the blocking function to be permanently deactivated. The handle, which covers the hole with the rosette, can then be reinstalled, since no release element needs to be permanently engaged in the hole.

[0014] Further advantageous embodiments are shown in the drawings. They show: Fig. 1 a section of a connecting rod drive with closed housing cover, Fig. 2 a representation of the connecting rod drive according to Fig. 1 with partially removed housing cover, Fig. 3 a representation of the slider in a single view.

[0015] Fig. Figure 1 shows part of a push rod fitting of a window or door comprising a push rod drive 1 for interaction with a handle (not shown here). The handle engages in a known manner with a square in a square receptacle 2 of a pinion 3 of the push rod drive 1. Fig. The pinion 3, shown more clearly in Figure 2, is rotatably mounted in the housing 4. For this purpose, the pinion 3 has collars 6 projecting on both flat sides 5, which mount the pinion 3 in a cylindrical bore 7 in the housing cover 8. The pinion 3 meshes with the teeth in the drive rod 10. The drive rod 10 is angled in the exemplary embodiment and has a known drive rod toothing, which consists of rectangular recesses lying next to one another in the longitudinal direction of the drive rod 10, into which the teeth engage. The drive rod 10 can be moved in the longitudinal direction by rotating the pinion 3. At least one locked and one opened position can be set using the handle olive. In the locked position, at least one locking bolt engages in a locking engagement arranged on the frame side and secures the sash to the frame. The locking bolt is assigned to the drive rod 10 in a bore and passes through a faceplate 12 in an elongated hole.The bolt can thus be moved into and out of engagement with the locking latch along the faceplate 12. Conventional push-rod fittings have two opening positions. In addition to a turn-open position, in which the sash can be pivoted about a lateral vertical axis, the sash can be secured in a tilt-open position by tilt locking engagements at the lower horizontal sash edge and pivoted about a lower horizontal axis. A stay mechanism on the upper horizontal sash leg limits the tilt opening width.

[0016] For safety reasons, it is desirable that the sash does not move into the open-turn position uncontrollably. This may be necessary, for example, to prevent people in the building from opening the windows in the open-turn position and jumping or falling out of the window. Therefore, a locking device 14 is provided.

[0017] The locking device 14 makes it possible to block the drive rod 10 in any switching position. For this purpose, the locking device 14 engages with a locking element 20 in a circumferential recess 21 of the pinion 3. In the simplest embodiment, the circumferential recess 21 is a tooth gap in the toothing of the pinion 3. The locking element 20 is actuated via an actuator 22. In the exemplary embodiment, the actuator 22 is designed as an electrically operated gear motor 23 that drives a spindle 24. Associated with the spindle 24 is a spindle nut 25 that can be adjusted along the spindle 24 by rotating the spindle. For this purpose, the spindle nut 25 is mounted in a longitudinal bore of the housing 4 in a non-rotatable but longitudinally adjustable manner and engages a clutch slide 26 with a driver. The spindle nut 25 and the clutch slide 26 can be moved along parallel axes. The two axes run radially or offset radially to the axis of rotation of the pinion 3.The clutch slide 26 is movable on a guide pin 27. The guide pin 27 supports and guides two springs 28 and 29 in addition to the clutch slide 26.

[0018] The springs 28 and 29 are mounted on both sides of the clutch slide 26 coaxially to the longitudinal axis of the guide pin 27 and apply force to the clutch slide 26 at its two longitudinal ends. The springs 28 and 29 are supported by a head 30 and a coupling piece 31. The coupling piece 31 has a fork-shaped end that forms a pivot bearing for a stirrup-shaped end of the locking element 20. The locking element 20 is guided through the housing cover 8. The guide is a straight guide that runs at an angle to the longitudinal axis of the actuator 22 and the guide pin 27. The guide is aligned radially to the rotational axis of the pinion 3.

[0019] The function resulting from the structure described above is as follows: The desired switching position is set using the handle. If the push rod fitting is to be blocked in the set switching position, then the actuator 22 is energized to move the spindle nut 25 to the left in the drawing. The spring 28 is thereby tensioned and thus also moves the coupling piece 31 to the left. The locking element 20 is displaced in the direction of the axis of rotation of the pinion 3. If the locking element 20 strikes the head of a tooth because the set switching position prevents the locking element 20 from engaging precisely, the spring 28 remains tensioned. If the handle is operated again and the pinion 3 is thereby rotated, the locking element 20 engages in the adjacent tooth gap and the spring 28 is released. The handle is thus locked with the pinion 3 and the drive rod 10 is blocked via the pinion 3.

[0020] If a different switching position is to be set, the actuator 22 is energized so that the spindle nut 25 is moved to the right in the drawing. The spring 28 is released and the spring 29 is tensioned. The clutch slide 26 is moved to the right and, via the clutch piece 31, pulls the locking element 20 out of engagement with the pinion 3. The pinion 3 can then rotate freely again.

[0021] From the Fig. 1 it can be seen that the housing 4 is composed of a first and a second housing half 34 and 35. In Fig. 2, the second housing half 35 is not shown. The housing half 35 forms the housing cover 8. The housing halves 34, 35 are provided with threaded abutment holes 36, 37 for the fastening screws of the handle.

[0022] A control electronics housing 39 is connected to a crimp 38 of the faceplate 12. The control electronics housing 39 houses a circuit board that supplies the signals required to control the actuator 22.

[0023] From the Fig. 2 shows that the housing 4 has a recess 40 formed by a material recess on the housing side. The recess 40 extends into the bore 7. A guide recess 42 running parallel to the housing edge 41 is provided on the lower edge 41 of the housing 4. The guide recess 42 is formed as a shallow groove in the housing 4.

[0024] The guide recess 42 supports a slider 43. The slider 43 is designed as a wire clamp, like the Fig. 3. The wire clamp is shaped as a three-dimensional body and is symmetrical with respect to a longitudinal center plane. As a result, the slider 43 engages the housing 4 on both sides.

[0025] The slide 43 has a centrally mounted actuating section 44, which protrudes from a plane in a bow-like manner from guide sections 45, 46, 47, 48 mounted on either side. The four guide sections 45, 46, 47, 48 lie in a plane. A connecting driver section 49 lies between the guide sections 47, 48. While the actuating section 44 rests against the flat surfaces 5 of the pinion 3, the driver section 49 runs perpendicular to them. The driver section 49 protrudes into the displacement path of the coupling piece 31 with a bow 50 protruding from the plane of the driver sections 45, 46, 47, 48.

[0026] If the handle is removed, the hole 7 becomes accessible from the outside. The operating section 44 becomes accessible through the hole in the sash profile when the handle is removed. If the operating section 44 is opened, for example by a tool in the Fig.1 is moved to the right, the bracket 50 abuts the coupling piece 31. Further displacement of the actuating section 44 displaces the coupling piece 31 back against the spring force of the spring 28 and thus the locking element 20 is forced from the locked position into a release position. The actuating section 44 is dimensioned such that the square receptacle 2 remains free in all positions of the slide 43, so that a square can be inserted and the push rod drive 1 can be actuated. In order to permanently ensure the actuation of the push rod drive 1, the slide 43 can be fixed in both end displacement positions by a locking element with a locking function. For this purpose, locking projections in the housing 4 can protrude from the plane of the bay 40 and lock onto the actuating section 44. The locking projections can protrude as a hump.

[0027] The control electronics in the control electronics housing 39 include a radio module that enables wireless control of the locking device 14. Furthermore, it is advantageous if the control electronics also include or evaluate sensors that evaluate the various switching positions of the drive rod 10. In addition to the sensors for the switching positions, sensors that provide information about the opening state of the sash can also be queried. The locking device 14 can also block the drive rod drive 1 in the open-turn position. This blocks actuation of the drive rod drive 1 when the sash is in the open-turn position, preventing incorrect actuation of the drive rod drive.

[0028] Control via a radio module also makes it possible to control several windows together as a group.

[0029] Relocating the control electronics housing 39 beneath the faceplate 12 reduces the space required in the rebate area. To ensure wireless connectivity, an antenna can be routed out of the control electronics housing 39. The power connection of the actuator 22 to the control electronics and a power transmission device is established via cables coupled with connectors.

[0030] The illustrated design of the slider 43 as a wire clamp made of metal wire can, as an alternative, be made of plastic. List of reference symbols 1 push rod drive 2 square sockets 3 pinions 4 housings 5 plan page 6 fret 7 Hole 8 Housing cover 10 Drive rod 12 faceplate 14 Locking device 20 locking element 21 circumferential recess 22 Actuator 23 Gear motor 24 spindle 25 spindle nut 26 clutch slides 27 guide bolts 28 spring 29 spring 30 heads 31 Coupling piece 34 first housing half 35 second housing half 36 Abutment threaded hole 37 Abutment threaded hole 38 Upturning 39 Control electronics housing 40 bays 41 Housing edge 42 Guide recess 43 sliders 44 Operating section 45 Guide Section 46 Guide Section 47 Guide Section 48 Guide Section 49 Carrier section 50 hangers QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 202008012837 U1

[0001] EP 3309333 B1

[0002] EP 3604719 B1

[0003] EP 3058154 B1

[0004] DE 202024102517 U1

[0005]

Claims

[1] Fitting for a window or door comprising a push rod fitting cooperating with a handle, wherein the handle engages with a square in a driving connection with a pinion (3) of a push rod drive (1), wherein the pinion (3) is rotatably mounted in a housing (4) and meshes with a toothing of a displaceable drive rod (10), wherein the push rod fitting consists of at least the drive rod (10), to which at least one locking bolt is assigned that can be displaced into an unlocked position and a locked position by rotation of the handle, wherein the drive rod (10) can be blocked in its mobility by a locking device (14), wherein the locking device (14) engages with a locking element (20) in a circumferential recess (21) of the pinion (3), and wherein the locking element (20) can be actuated via an electrical actuator (22),wherein the coupling slide (26) cooperates with a displaceable coupling slide (26) which is coupled to the locking element (20), wherein the coupling slide (26) is mounted on a guide pin (27) and is supported in each direction of movement via a spring (28 or 29), , characterized by that a slide (43) is mounted in the housing (4), which projects with an actuating section (44) into the wing bore for the square (2) and engages with a bracket (50) on the coupling slide (26). [2] Fitting according to claim 1, characterized by that the slide (43) engages around the housing (4) on both radial surfaces. [3] Fitting according to claim 1, characterized by that the slider (43) is designed as a wire clamp. [4] Fitting according to claim 3, characterized by that the wire clamp has two guide sections (45, 46, 47, 48) located next to the actuating section (44). [5] Fitting according to one of claims 1 to 4, characterized by that the slide (43) with the guide sections (45, 46, 47, 48) is guided in grooves of the housing. [6] Fitting according to claims 1 to 5, characterized by that the actuating section (44) protrudes like a bow from the guide sections (45, 46, 47, 48). [7] Fitting according to one of claims 1 to 6, characterized by that the slider (43) can be fixed in both end displacement positions with locking means.

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