Device for opening and closing curtains and a method for connecting an electric motor drive and / or a deflector to the profile section of a curtain rail

Abstract

The invention relates to a device for opening and closing curtains, comprising a curtain rail (1) with at least one channel (9) open in the direction of the curtain to be suspended, and at least one curtain holding part which is held in the channel (9) in the longitudinal direction of the channel (9) by means of guide devices so as to be movable for attaching the curtain to be suspended, wherein the guide devices for the at least one curtain holding part are adjustable along the curtain rail (1) via an electric motor drive (13, 14) by means of a drive means (12).In this case, a laterally arranged, window-like opening (2) is introduced into at least one section of the profile cross-section of the curtain rail (1), which opening provides access from outside the curtain rail (1) to at least the at least one channel (4, 15, 16) for the drive means (12). A structural unit (6) for the electric motor drive (13, 14) and / or a deflection (13) of the drive means (12) can be inserted into this opening (2) and secured laterally therein to the curtain rail (1) in such a way that the drive means (12) can pass through the area for the electric motor drive (13, 14) and / or the deflection (13). A method for connecting an electric motor drive (13, 14) and / or a deflection (13) to the profile cross-section of a curtain rail (1) is also proposed.

Description

[0001] The invention relates to a device for opening and closing curtains according to the preamble of claim 1 and to a method for connecting an electric motor drive and / or a deflection to the profile cross-section of a curtain rail according to the preamble of claim 15.

[0002] Curtain rails are usually used to hang curtains. These gliders are arranged between the curtain and the curtain rail and are attached to the curtain. They can slide or roll in a corresponding groove-like profile of the curtain rail relative to the curtain rail. The curtain rail itself is arranged and fastened, for example, to the ceiling or above a wall opening in front of a window. Such devices for hanging curtains can be operated directly by hand by moving the curtain itself or a corresponding handle such as a curtain rod lengthwise along the curtain rail. There are also devices for hanging curtains that can be moved using a cord pull technology. Hand-operated cords, usually running inside the curtain rail, move the curtain relative to the curtain rail.It is also known that curtains are operated by electric motors, whereby a drive motor connected to the curtain rail, for example via drive belts, acts on the curtain in such a way that it is adjusted in the longitudinal direction of the curtain rail.

[0003] Inside such curtain rails, guide and actuation devices are provided that allow the curtain to be moved relative to the curtain rail. This requires appropriate profile cross-sections, some of which must have complex geometries. Such curtain rails are often made of metals, especially light metals such as aluminum. They are also available in a wide range of colors.

[0004] The design of curtain rails varies considerably in terms of their dimensions and functionality, depending on whether the curtain is operated manually, by cord, or by electric motor. While a simple groove open towards the curtain is usually sufficient for guiding the gliders or rollers for manual operation, operation by cord or electric motor requires additional grooves and chambers extending along the curtain rail to accommodate, guide, and move drive belts, pull cords, or similar operating elements within the curtain rail.

[0005] To open and close a curtain electrically, an electric motor drive is required, which, for example, shifts the position of drive belts that run inside the curtain rail and are connected to the curtain via coupling elements, relative to the curtain rail. This electric motor drive must be connected to the guide channels within the curtain rail to interact with the guide and operating devices. At the same time, this electric motor drive should be as unobtrusive as possible, ideally invisible from the front of the curtain.

[0006] For this reason, it is known, for example, from EP 2 250 949 B1, to couple the electric motor drive for adjusting a curtain to the curtain rail in such a way that a connecting element is attached to the curtain rail as an extension of the curtain rail. An adapter for attaching the electric motor drive and curved channels are provided on the connecting element. These curved channels allow the curtain operating device, in the form of an endless drive belt running along the curtain rail, to pass from the channels of the curtain rail into the area of the electric motor drive and be driven there. For this purpose, the toothed drive belt is guided over a gear driven by the electric motor drive, where it is deflected and driven by the gear rotating by the electric motor.If a corresponding deflection of the drive belt is provided at both ends of the curtain rail or, in the case of two-part curtains, at the ends of the respective movement areas of the partial curtains, the electric motor drive moves the curtain along the curtain rail. The electric motor drive or deflection is advantageously located in the area that disappears behind the curtain for an observer at the ends of the curtain rail and is therefore largely invisible. For this purpose, the drive belt is guided from its path along the curtain rail via curved channels into an area behind the curtain, as this is the only way to conceal the electric motor drive or deflection behind the curtain. This also makes it possible to provide the visible ends of the curtain rail with decorative elements such as end knobs, as is usual, which are clearly visible from the front of the curtain.The disadvantage of this design is that each curtain rod requires a corresponding adapter for the electric motor drive or the deflection in the extension of the curtain rail. The cross-section of the adapter must be designed to fit the respective curtain rail exactly, be attachable to the curtain rail, and be as color-identical as possible to the color of the curtain rail in order to also match the appearance of the curtain rail. Due to the large number of possible cross-sections and colors of commercially available curtain rails, the manufacturer or distributor of such curtain rails with electric motor drive must produce and keep in stock a large number of suitable adapters in order to be able to accommodate all customer wishes. It is also difficult to achieve color identity between the curtain rail and adapter, for example during surface finishing. This has a negative impact on cost-effectiveness.

[0007] The object of the present invention is therefore to further develop a known device for opening and closing curtains in such a way that the drive for curtain rails can be arranged on the curtain rail in a simplified manner.

[0008] The solution to the problem of the invention arises with regard to the device from the characterizing features of claim 1, and with regard to the method for connecting an electric motor drive and / or a deflection to the profile cross-section of a curtain rail from the characterizing features of claim 15, each in conjunction with the features of the corresponding preamble. Further advantageous embodiments of the invention emerge from the dependent claims.

[0009] The invention with regard to the device is based on a device for opening and closing curtains, comprising a curtain rail with at least one channel open in the direction of the curtain to be suspended and at least one curtain holding part held in the channel in the longitudinal direction of the channel by means of guide devices for attaching the curtain to be suspended, wherein the guide devices for the at least one curtain holding part are adjustable along the curtain rail via an electric motor drive by means of a drive means.Such a generic device is further developed in accordance with the invention in that a laterally arranged, window-like opening is introduced into the profile cross-section of the curtain rail in at least one section, which window-like opening provides access from outside the curtain rail to at least the at least one channel for the drive means, wherein a structural unit for the electric motor drive and / or a deflection of the drive means can be inserted into this opening and fixed laterally therein on the curtain rail in such a way that the drive means can pass through the area for the electric motor drive and / or the deflection.By opening the profile cross-section laterally in the area in which an electric motor drive or a deflection is to be installed, it is possible to arrange these on the respective profile of the curtain rail without additional plug-on adapters that match the profile cross-section, as in EP 2 250 949 B1, and thereby to provide the electric motor drive or a deflection that is open to the at least one channel for the drive means, so that the drive means can reach the area of the electric motor drive or the deflection from the at least one channel and can be driven or deflected there.At the same time, the lateral introduction of the window-like opening into the profile cross-section allows the electric motor drive or the deflection to be arranged laterally behind the curtain plane and thus hidden behind the curtain, whereby the electric motor drive or the deflection largely disappears behind the curtain and is largely invisible to the viewer standing in front of the curtain. Likewise, the usually decoratively designed end area of the curtain rail can be equipped with decorative elements such as conventional end buttons or the like, as has been the case up to now. Furthermore, the arrangement of the electric motor drive or the deflection at least in sections within the profile cross-section of the curtain rail allows the size of the electric motor drive or the deflection to be reduced, since the installation space for the electric motor drive or the deflection overlaps with the installation space of the curtain rail.penetrates and thus reduces the overall size. This also makes it unnecessary to have separate adapters for the electric motor drive or the deflection for each cross-sectional shape of the curtain rail, since these are no longer needed. The color coordination of such an adapter, which was previously visible in the assembled state, to the color of the curtain rail is also unnecessary, since the curtain rail remains unchanged in the area visible from the front of the curtain and the assembly for the electric motor drive or deflection is largely hidden behind the curtain and can therefore be colored as desired. The inventive design of the device is therefore significantly improved both technically and economically compared to the known arrangement of electric motor drive or deflection.

[0010] In a first embodiment, it is conceivable for the structural unit to comprise the electric motor drive and / or the deflection as well as guides for the drive means from the area within the at least one channel for the drive means in the curtain rail into the area of the electric motor drive and / or the deflection and back into the at least one channel for the drive means in the curtain rail. The structural unit for the electric motor drive and / or the deflection can therefore, in addition to providing a torque and a deflection point, also assume guidance tasks, since, for trouble-free operation, the drive means must be reliably guided from the at least one channel for the drive means in the curtain rail into the structural unit for the electric motor drive and / or the deflection and then guided back from this structural unit into the at least one channel for the drive means.Guides provided for this purpose can ensure this safe transition by allowing access through the window-like opening directly into the interior of at least one channel for the drive means.

[0011] In a further embodiment, the guides of the structural unit for guiding the drive means from the area within the channel for the drive means in the curtain rail into the area of the electric motor drive and / or the deflection and back can be curved, whereby a successive deflection of the drive means from the path along the curtain rail into the structural unit for the electric motor drive and / or the deflection and back is possible.

[0012] It is also advantageous if a guide is provided for the drive means from the area within the channel for the drive means in the curtain rail to the area of the electric motor drive and / or the deflection, and a guide is provided for the drive means back from the area of the electric motor drive and / or the deflection into the channel for the drive means in the curtain rail. This ensures that the drive means is guided by its own guides during the transition from the channel in the curtain rail to the assembly unit of the electric motor drive and / or the deflection and back into a channel in the curtain rail, and runs independently of the other guide.

[0013] It is also conceivable for the guides to be designed as parts of the housing of the assembly, which, when the assembly is mounted on the curtain rail, extend into the window-like opening of the curtain rail and into the at least one channel for the drive mechanism. Thus, the guides can, if necessary, extend beyond the outer dimensions of the housing of the assembly in the direction of the window-like opening and thus be particularly well inserted into the at least one channel for the drive mechanism and guide the drive mechanism over long distances of the transition between the channel and the assembly.

[0014] It is particularly advantageous that the laterally arranged, window-like opening only partially interrupts the normal profile cross-section of the curtain rail. This allows a corresponding window-like opening to be arranged along the curtain rail, and a corresponding component to be inserted there, only where an electric drive or deflection of the drive mechanism is required. Thus, the window-like opening can be arranged in at least one end area and / or a central area of the curtain rail arranged along the curtain rail.This makes it possible not only to provide an electric drive or deflection at the end of the curtain rail, but also, in the case of divided, independently driven partial curtains, to provide corresponding deflections in the middle of the curtain rail, which would otherwise only have been possible with additional adapter elements inserted lengthwise into the curtain rail, with the problems already described.

[0015] A particularly advantageous feature of the lateral arrangement and the side insertion of the assembly for the electric drive or deflection is that the curtain rail extends across the entire length of the curtain's movement range and is visible from the front of the curtain as a single, continuous piece. This makes it possible, in particular, for the opening located laterally in the profile cross-section of the curtain rail, and thus also the assembly with the electric motor drive and / or deflection, to be concealed behind the curtain when installed. From the front of the curtain, the curtain rail appears to be constructed from a single, continuous piece, creating a uniform appearance.

[0016] From both an economic and technical perspective, it is also a major advantage that the structural unit with the electric motor drive and / or deflection can be designed to suit a variety of curtain rails with different cross-sections. Regardless of the external design and external dimensions of the cross-sectional shape of the curtain rail, a uniform structural unit with the electric motor drive and / or deflection can be used, since the at least one channel for guiding the drive means is arranged identically or at least similarly inside the curtain rail for many cross-sectional shapes. Thus, only the shape and dimensions of the window-like opening in the curtain rail need to be designed to suit the application of such a universal structural unit on the curtain rail and to engage it with the drive means.

[0017] Furthermore, it is conceivable that the structural unit with the electric motor drive and / or the deflection encompasses at least parts of the outer contour of the curtain rail and / or engages in recesses in the outer contour of the curtain rail and is fixed there to the curtain rail. This allows a simple and easily accessible fixing of the structural unit to the curtain rail, for example by sections of the structural unit engaging in grooves or around contour sections of the curtain rail and being able to be screwed or clipped there.

[0018] A particular advantage is that the opening arranged laterally in the profile cross-section of the curtain rail can be machined, preferably milled, into the profile cross-section of the curtain rail by the user. This means that, directly at the installation site and after determining the desired movement options for the curtain, a window-like opening can be machined, for example, into a standard curtain rail exactly where it is needed. The curtain rail manufacturer is not required for this, which increases flexibility in use and reduces costs for the customer. The window-like opening can be machined, for example, using a milling device available to the installation company, which creates a predefined window-like opening in the curtain rail.

[0019] It is conceivable and advantageous if the drive means is designed as a, preferably endless, belt, preferably a toothed belt, but it is also possible to design the drive means as a cord or band.

[0020] It is advantageous if the drive means is redirected and, if necessary, wound up via rollers or gears in the unit for the electric motor drive and / or a deflection.

[0021] The invention with regard to the method relates to a method for connecting an electric motor drive and / or a deflection to the profile cross-section of a curtain rail, in which, in accordance with the invention, at least one laterally arranged, window-like opening for receiving a structural unit for the electric motor drive and / or a deflection of the drive means is introduced into the profile cross-section of the curtain rail in at least one section of the curtain rail, which provides access from outside the curtain rail to at least the at least one channel for a drive means of the curtain. The advantages of the method according to the invention are related to the advantages and properties of the device according to the invention explained in detail above. Thus, the above statements can be directly applied to the method, which is hereby expressly stated and serves to avoid unnecessary repetition.

[0022] A particularly preferred embodiment of the device according to the invention for opening and closing curtains is shown in the drawing.

[0023] They show: Figure 1a, 1b - a first schematically illustrated embodiment of the device according to the invention, once in Figure 1a in representation of the curtain rail with a window-like opening and in Figure 1b with a structural unit for electric motor drive or deflection of a drive means arranged in the window-like opening on the curtain rail, Figures 2a-2d - various views, sectional views and plan views of the device according to Figure 1b , Figure 3a, 3b - the device according to Figure 2a with drive means arranged thereon and its course between the structural unit and channels within the curtain rail, Figure 4a, 4b - a bottom view and a side view of the structural unit according to Figure 1b, Figures 5 and 6-Representations of the arrangement of the curtain rail provided with a window-like opening for various typical cross-sectional designs of curtain rails.

[0024] The invention is described below with reference to preferred embodiments in terms of its function and structure using schematic figures.

[0025] In the Figure 1a, 1b A first schematically illustrated embodiment of the device according to the invention can be seen, once in Figure 1a in representation of the curtain rail 1 provided with a window-like opening 2 with edges 3 and in Figure 1b with structural unit 6 for electric motor drive 13, 14 or deflection 13 of a drive means 12 arranged in the window-like opening 2 on the curtain rail 1 and explained in more detail later.

[0026] The curtain rail 1 has an approximately trapezoidal outer shape with partially rounded corner areas and has a series of chamber-like channels 4, 11 and stiffeners arranged between them. Such cross-sections of curtain rails 1 are usually extruded from light metals and are widely known and will only be explained here to the extent that this is relevant to the present invention. Important in this context is the chamber 4 extending like a channel along the curtain rail 1, which in this illustration has a groove-like groove 9 on the top side opening towards the curtain (not shown in detail), through which a movement of the drive means 12 arranged in the channel 4 movable along the curtain rail 1 (shown in more detail in Figures 3a and 3b) is transferred to hanging devices on the curtain which are known per se and are not further relevant here, thereby moving the curtain along the curtain rail 1. When the curtain rail is assembled, the groove 9 is aligned vertically downwards and the curtain hangs on the drive means 12 underneath the groove 9.

[0027] If the drive means 12 is to be moved within the curtain rail 1 by means of an electric motor, an electric drive motor 14 (not shown here) must be able to act on the drive means 12, which is also toothed, via a gear 13 and ensure the movement along the curtain rail 1. For this purpose, the drive means 12 must interact with the drive assembly, referred to here simply as the electric motor drive 13, 14, in a known manner by the drive means 12, designed as a toothed belt, for example, wrapping around a gear 13 driven by an electric drive motor 14 (not shown here) arranged on the flange 21.If the gear 13 now rotates due to the action of the electric motor drive 14, the toothed belt-like drive means 12, coming from a channel 15 arranged within the chamber 4 and separated by a partition 17, rotates around the gear 13 and is moved back into another channel 16 arranged within the chamber 4 and separated by the partition 17. Due to this known wrapping of the drive means 12 around a gear 13, the curtain connected to the drive means 12 can be moved back and forth along the curtain rail 1, depending on the direction of rotation of the gear 13.

[0028] However, in order to enable the electric motor drive 13, 14 to come into contact with the drive means 12, according to the present invention, a window-like opening 2 with edges 3 is incorporated into the lateral walls of the curtain rail 1, for example milled using a device or on a machine, which opens the channel 4 laterally and thus makes the drive means 12 accessible through the window-like opening 2 for interaction with the electric motor drive 13, 14. A structural unit 6, designated overall by the part number 6, with an installation space 7 for an electric motor drive 13, 14 or a deflection 13 can then be inserted into this window-like opening 2 and clamped to the curtain rail 1 by means of screws 10 in a groove 11 of the curtain rail 1, in the interior of which or on which all the necessary components for an electric motor drive 13, 14 are present.In addition to an electric motor drive 13, 14, the structural unit 6 can also have only a non-driven deflection device such as a rotatably mounted gear 13. Such a deflection is sufficient for curtain sections at one end of which a structural unit 6 with an electric motor drive 13, 14 is present and at the other end of which the drive means 12 only needs to be deflected from the channel 15 into the channel 16 or vice versa. In this case, with such a deflection 13, no electric motor 14 is attached to the flange 21, and the gear 13 rotates passively when the drive means 12 is actively moved by an electric motor drive 13, 14, for example, at the other end of the curtain rail 1.

[0029] How better in the Figure 2aAs can be seen, the structural unit 6 has an approximately cuboidal basic shape, wherein in the outer surface of the structural unit 6 facing the window-like opening 2 there are two openings arranged between guides 8, which run obliquely to the channels 15 and 16 and through which the drive means 12 can enter or exit from the channels 15, 16 into the interior of the structural unit 6. For this purpose, these openings are surrounded up to the area of the channels 15, 16 with tongue-like guides 8, which, together with the walls of the channels 15, 16, surround the movement space of the drive means 12 as it passes between the curtain rail 1 and the structural unit 6 and securely guide the drive means 12. Sections 18 of the tongue-like guides 8 can be curved in order to ensure a smooth transition of the drive means 12 between the curtain rail 1 and the structural unit 6 and vice versa.The guides 8 guide the drive means 12 in such a way that the drive means 12 is guided approximately tangentially towards a gear 13 and approximately tangentially away from the gear 13, partially wrapping around the gear 13. When the gear 13 rotates, the drive means 12, which here has opposite teeth, for example, is also driven and, depending on the direction of rotation of the gear 13, is moved either from channel 15 into channel 16 or vice versa. The curtain arranged on the drive means 12 is thus displaced either to the left or to the right, relative to the plane of the drawing. The gear 13 only has an electric motor drive 14, which can be flange-mounted on the flange 21 on the outside of the structural unit 6, if this structural unit 6 is to serve as a drive.If, however, the structural unit 6 is only required for deflecting the drive means 12, no electric motor drive 14 is flanged to the flange 21 and the gear wheel serves only for the passive deflection of the drive means 12. This is the standard case for simply driven curtains, at one end of which a structural unit 6 with an electric motor drive 13 and at the other end of which a pure deflection 13 is required.

[0030] The structural unit 6 itself can be fixed by screws 10 to suitably shaped sections of the cross-sectional shape of the curtain rail 1, for example by an overhanging housing section 19 forming a receiving space 20 for sections of the curtain rail 1 and making it possible to fix the curtain rail 1 and structural unit 6 to one another in a suitable manner.

[0031] In the Figures 5 and 6Examples of configurations of the window-like opening 2 and its edges 3 can be seen in other cross-sectional shapes of a curtain rail 1, for which all of the above properties and advantages also apply. Ideally, the same structural unit 6 can be used for all of these cross-sectional shapes of curtain rails 1. Part number list

[0032] 1 - Curtain rail 2 - Window-like opening 3 - Edges of window-like opening 4 - Chamber for drive means 5 - Channel for fastening 6 - Assembly unit 7 - Installation space for electric motor drive / deflection 8 - Guides 9 - Open groove to the curtain 10 - Fastening screws 11 - Clamping groove 12 - Toothed belt for electric motor adjustment 13 - Gear wheel for electric drive / deflection 14 - Electric motor drive 15 - Channel for drive means 16 - Channel for drive means 17 - Central web between channels for drive means 18 - Curved section for guide for drive means 19 - Overhanging housing section 20 - Receiving space for curtain rail 21 - Flange for electric motor drive

Claims

1. Device for opening and closing curtains, comprising a curtain rail (1) with at least one channel (9) open towards the curtain to be hung and at least one curtain holding part held in the channel (9) in the longitudinal direction of the channel (9) by means of guide devices for attaching the curtain to be hung, wherein the guide devices for the at least one curtain holding part are adjustable along the curtain rail (1) via an electric motor drive (13, 14) by means of a drive means (12), characterized in thata laterally arranged, window-like opening (2) is introduced into at least one section of the profile cross-section of the curtain rail (1), which opening provides access from outside the curtain rail (1) to at least the at least one channel (4, 15, 16) for the drive means (12), wherein a structural unit (6) for the electric motor drive (13, 14) and / or a deflection (13) of the drive means (12) can be inserted into this opening (2) and fixed laterally therein on the curtain rail (1) in such a way that the drive means (12) can pass through the area for the electric motor drive (13, 14) and / or the deflection (13).

2. Device according to claim 1, characterized in thatthe structural unit (6) comprises the electric motor drive (13, 14) and / or the deflection (13) as well as guides (8) for the drive means (12) from the area within the at least one channel (4, 15, 16) for the drive means (12) in the curtain rail (1) into the area of ​​the electric motor drive (13, 14) and / or the deflection (13) and back into the at least one channel (4, 15, 16) for the drive means (12) in the curtain rail (1).

3. Device according to one of claims 1 or 2, characterized in that the guides (8) of the structural unit (6) for guiding the drive means (12) from the area inside the channel (4, 15, 16) for the drive means (12) in the curtain rail (1) into the area of ​​the electromotive drive (13, 14) and / or the deflection (13) and back are curved.

4. Device according to claim 3, characterized in thata guide (8) for the drive means (12) from the area inside the channel (4, 15, 16) for the drive means (12) in the curtain rail (1) into the area of ​​the electric motor drive (13, 14) and / or the deflection (13) and a guide (8) for the drive means (12) back from the area of ​​the electric motor drive (13, 14) and / or the deflection (13) into the channel (4, 15, 16) for the drive means (12) in the curtain rail (1) are provided.

5. Device according to one of claims 2 to 4, characterized in that the guides (8) are designed as parts of the housing of the structural unit (6) which, when the structural unit (6) is mounted on the curtain rail (1), protrude into the window-like opening (2) of the curtain rail (1) into the at least one channel (4, 15, 16) for the drive means (12).

6. Device according to one of the preceding claims, characterized in thatthe laterally arranged, window-like opening (2) only interrupts the normal profile cross-section of the curtain rail (1) in sections.

7. Device according to one of the preceding claims, characterized in that the window-like opening (2) is arranged in at least one end region and / or a central region of the curtain rail (1) arranged along the curtain rail (1).

8. Device according to one of the preceding claims, characterized in that the curtain rail (1) extends over the entire length of the curtain's movement area and is visible from the front of the curtain as a continuous part.

9. Device according to claim 8, characterized in that the opening (2) arranged laterally in the profile cross-section of the curtain rail (1) is concealed behind the curtain when installed.

10. Device according to one of the preceding claims, characterized in thatthe structural unit (6) with the electric motor drive (13, 14) and / or the deflection (13) is designed to suit a plurality of curtain rails (1) of different cross-sections.

11. Device according to one of the preceding claims, characterized in that the structural unit (6) with the electric motor drive (13, 14) and / or the deflection (13) encompasses at least parts of the outer contour of the curtain rail (1) and / or engages in recesses (11) of the outer contour of the curtain rail (1) and is fixed there to the curtain rail (1).

12. Device according to one of the preceding claims, characterized in that the opening (2) arranged laterally in the profile cross-section of the curtain rail (1) can be introduced, preferably milled, into the profile cross-section of the curtain rail (1) by the user.

13. Device according to one of the preceding claims, characterized in thatthe drive means (12) is designed as a, preferably endless, belt, preferably a toothed belt, a cord or a band.

14. Device according to one of the preceding claims, characterized in that the drive means (12) can be deflected via rollers or gears (13) in the structural unit (6) for the electric motor drive (13, 14) and / or a deflection (13).

15. Method for connecting an electric motor drive (13, 14) and / or a deflection (13) to the profile cross-section of a curtain rail (1), characterized in thatat least one laterally arranged, window-like opening (2) for receiving a structural unit (6) for the electric motor drive (13, 14) and / or a deflection (13) of the drive means (12) is introduced into the profile cross-section of the curtain rail (1) in at least one section of the curtain rail (1), which provides access from outside the curtain rail (1) to at least the at least one channel (4, 15, 16) for a drive means (12) of the curtain.

16. Method according to claim 15, characterized in that the window-like opening (2) is introduced into the profile cross-section of the curtain rail (1) to match the dimensions of the curtain rail (1) and the movement lengths of the curtain along the length of the curtain rail (1).

17. Method according to one of claims 15 or 16, characterized in that the window-like opening (2) is introduced into at least one end region and / or a central region of the curtain rail (1) arranged along the curtain rail (1).

18. Method according to one of claims 15 to 17, characterized in that the window-like opening (2) is introduced into the profile cross-section of the curtain rail (1) by the user.

19. Method according to claim 18, characterized in that the opening (2) arranged laterally in the profile cross-section of the curtain rail (1) is milled into the profile cross-section of the curtain rail (1).

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