ADJUSTABLE DRIVE ROD

Description

[0001] The present invention relates to a sash for doors or windows comprising a sash frame and a drive rod received therein.

[0002] Locking rods are well known from the prior art. They are usually arranged in the frame profile of a window or door and serve to lock the sash in its closed position. For example, in double-leaf doors, a locking rod is arranged in the so-called "fixed leaf" and serves to secure the fixed leaf in the closed position. The locking rod is connected to a locking rod slider, which is part of the door handle assembly. This ensures that when the door handle is operated, the locking rod is automatically retracted, i.e., pulled into the frame profile of the sash to allow the sash to open. Locking rods are also used in single-leaf doors or windows, for example, in security doors, which require particularly strong locking.

[0003] In times of energy crises and climate change, the thermal insulation of buildings is becoming increasingly important. This is particularly crucial for doors and windows on the building envelope, as these are where the greatest energy losses occur. To minimize heat loss, it is common practice to install plastic seals in the window or door rebate to restrict air movement through the rebate as much as possible. However, such seals, especially on the bottom of the window or door, can impede the opening and closing motion.

[0004] To ensure reliable thermal insulation while allowing unimpeded movement of doors and windows, drop-down bottom seals were developed. When the window or door is closed, these seals lower themselves relative to the frame or finished floor. When the door or window is opened, the bottom seals automatically rise, creating a gap between them and the frame or floor covering, thus preventing any obstruction of movement.

[0005] Since such bottom seals preferably extend over the entire width of the window or door, it is known that the locking rods or bolts connected to them extend through the bottom seal. For example, the bottom seal can have a vertical channel (e.g., a vertical bore) that allows vertical movement of the locking rod without affecting the bottom seal.

[0006] For the doors described above, which have a drop-down bottom seal and a locking rod, the bottom seal can only be replaced or installed if the door leaf is removed and stored horizontally. Only then can the locking rod be released and removed from the bottom seal. In other words, retrofitting a bottom seal or inserting a replacement bottom seal is a complex and, in most cases, requires the presence of a trained professional. Furthermore, replacing bottom seals is therefore both physically demanding and time-consuming.

[0007] Document JP 5 154093 B2 describes at least one wing with a connecting rod that is linked to a connecting rod slide. The connecting rod has a first connecting rod section with a first end, a second connecting rod section with a first end, and a fastening area.

[0008] Based on the aforementioned problem, the present invention aims to further develop the drive rods and wings known from the prior art in such a way that the insertion or replacement of bottom seals is possible even when the door is installed. Furthermore, the present invention is intended to prevent damage to the floor surface during the construction phase.

[0009] The aforementioned problem is solved according to the invention by a wing according to independent claim 1. Further advantageous embodiments can be found in the dependent claims.

[0010] Accordingly, the present invention relates to a sash for doors or windows, wherein the sash comprises the following: a sash frame, a drive rod slide, a drive rod, a drop-down bottom seal which is housed in the sash frame, wherein the connecting rod is connected to a connecting rod slide such that the connecting rod is movable between a locked position in which the sash is fixed and an open position in which movement of the sash is permitted, wherein the connecting rod comprises: a first connecting rod part with a first end for connecting the first connecting rod part to a connecting rod slide and an opposite, second end; a second connecting rod part with a first end for connecting the second connecting rod part to the second end of the first connecting rod part;a fastening area for connecting, in particular detachably connecting, the first and second drive rod sections, wherein the fastening area has a maintenance configuration in which the drive rod sections are connected such that the drive rod comprises a first overall length, and an operating configuration in which the drive rod sections are connected such that the drive rod comprises a second overall length, wherein the second overall length is longer than the first overall length, wherein the second drive rod section has a second end which is opposite the first end, and wherein the drive rod is arranged in the sash frame such that the second end, in the operating configuration, is received within an opening of the bottom seal and, in the maintenance configuration, is pulled out of the opening of the bottom seal.

[0011] In other words, the innovative drive rod for windows or doors is length-adjustable, specifically between two predefined configurations. It's also important to note that the drive rod's length can be adjusted even when installed. In its normal state, i.e., in its operating configuration, the drive rod has a greater overall length, extending from the drive rod slider to the opening in the bottom seal mentioned earlier. To allow for replacement of the bottom seal, the overall length of the drive rod can be shortened. This pulls the second part of the drive rod out of the bottom seal, making it movable relative to the sash frame. The bottom seal can therefore be removed from the sash frame without having to remove the door or window.The ability to adjust the overall length of the connecting rod should not be confused with the longitudinal movement of the connecting rod when the handle is actuated. Specifically, in both configurations, the innovative connecting rod can be moved back and forth longitudinally at any time by the handle and the associated connecting rod slide. However, the initial overall length of the connecting rod is designed such that the second section of the connecting rod is extended from the base seal when the rod is open. In contrast, in the operating configuration, the second section of the connecting rod is always located within the base seal, regardless of whether the connecting rod is in its closed or open position.

[0012] According to another embodiment, the mounting area has exactly two configurations for adjusting the overall length of the drive rod between the first and second overall lengths. In other words, the two configurations are settings that result in predetermined overall lengths. They are not two freely selectable configurations of a stepless adjustment option. The predetermined overall lengths of the two configurations ensure that the drive rod is no longer connected to the retractable seal in the maintenance configuration.

[0013] In another embodiment, the fastening area is formed integrally with the second end of the first connecting rod section or integrally with the first end of the second connecting rod section. The fastening area is located between the first and second connecting rod sections. The connecting rod sections are separate parts of the connecting rod, which can be connected to each other via the fastening area. If the fastening area is formed as an integral part of one of the two connecting rod sections, the number of individual parts required for assembling the connecting rod is reduced. Alternatively, however, it is also conceivable that the fastening area is a separate section in addition to the first and second connecting rod sections, which can be detachably connected to both connecting rod sections.

[0014] In a further embodiment, the first and / or the second connecting rod section is mounted so that it is longitudinally displaceable within the mounting area. If the mounting area is an integral part of one of the two connecting rod sections, the other connecting rod section is mounted so that it is longitudinally displaceable within the mounting area in order to change the overall length. However, it is also conceivable that both connecting rod sections are longitudinally displaceable within the mounting area. By longitudinally displacing one or both connecting rod sections, the overall length of the connecting rod is changed. For example, the distance or overlap area between the two connecting rod sections can be changed by the longitudinal displacement, as will be explained in more detail later.

[0015] According to a further embodiment, the first and / or second drive rod section is locked in a first longitudinal position in the maintenance configuration of the mounting area and in a second longitudinal position in the operating configuration of the mounting area. In other words, as long as the locking mechanism is not released in either configuration, the drive rod remains in the respective configuration and thus retains its corresponding overall length. Accordingly, unintentional lengthening or shortening of the drive rod can be prevented by the aforementioned locking mechanisms.

[0016] In a further embodiment, the drive rod has a fastening means for locking the first and / or second drive rod section in the first or second position, respectively. This fastening means can be, for example, a locking clip or a setscrew. The fastening means is accessible during normal operation of the door or window, so that the drive rod can be switched from its operating configuration to its maintenance configuration and vice versa at any time without having to open the sash frame. The fastening means is preferably designed such that it connects the drive rod sections quickly and easily (releasably) to the mounting area.

[0017] According to a further embodiment, the first or second connecting rod section has first and second recesses, in particular grooves, which are spaced apart from each other in the longitudinal direction, wherein the longitudinal spacing of the recesses corresponds to the difference in length between the first and second overall lengths of the connecting rod. By providing the grooves, the difference between the two overall lengths can be specified very easily and reliably by the manufacturer.

[0018] In another embodiment, the fastening area has a fastening element that is connected to the first recess in the maintenance configuration and to the second recess in the operating configuration. The fastening element can be, for example, a locking clip or a setscrew. In the case of a locking clip, it can be quickly and easily clipped into the first or second recess to secure the drive rod in its maintenance or operating configuration, respectively.

[0019] In another embodiment, the drive rod is arranged in the sash frame such that at least a portion of the mounting area is accessible from the outside for adjusting the configuration. In this context, it should be noted that the term "from the outside" does not refer to the exterior of the building, but rather to one of the outer surfaces of the sash frame. For example, the mounting area can be accessible in the rebate area of ​​the window or door, so that it is inaccessible at least when the door or window is closed, thus preventing unintentional changes to the drive rod length.

[0020] In a further embodiment, the second drive rod section has a handle element that extends through an opening in the sash frame and is designed to allow longitudinal displacement, in particular lifting, of the second drive rod section relative to the mounting area from the outside. The handle element can be used to displace the second drive rod section relative to the first, especially against gravity, after the mounting element has been removed. If the mounting area is formed integrally with the second drive rod section, the handle element can accordingly also be located at the mounting area.

[0021] The invention will now be explained in more detail with reference to the embodiments shown in the figures.

[0022] This shows: FIG. 1 shows a schematic representation of a double-leaf door with a drive rod; FIG. 2 shows an embodiment of the drive rod according to the invention; FIG. 3 shows a partial area of ​​another embodiment of a drive rod according to the invention; FIG. 4 shows a schematic perspective view of a drive rod according to the invention in its installed state in the operating configuration; FIG. 5 shows a cross-section through the frame profile according to FIG. 4 FIG. 6 shows a schematic, perspective view of a drive rod according to the invention in a frame profile during the release of the fastening element; FIG. 7 shows a schematic, perspective view of a drive rod in a frame profile in the maintenance configuration; FIG. 8 shows a schematic, perspective view of the maintenance configuration according to FIG. 7 with integrated fastening element.

[0023] The FIG. 1Figure 1 shows a schematic view of a double-leaf door according to the prior art. The double-leaf door 100 has a first leaf frame 102 and a second leaf frame 112. The two leaf frames 102 and 112 are pivotally hinged to a frame 114. The door hinges shown schematically are provided for this purpose.

[0024] The first wing frame 102 may be a fixed wing, which usually remains in the closed position shown here.

[0025] In contrast, the second sash frame 112 can be an active sash, which is typically opened and closed to provide access to the adjacent rooms. For this purpose, the active sash is equipped with a door handle 110. The inactive sash is only opened when further passage is needed, for example, to transport bulky items between the rooms.

[0026] In the following, only the first sash frame 102 (fixed sash) will be referred to, as it has a locking rod 106, 107. The first sash frame 102 has a frame profile 104. For example, the frame profile 104 is formed from several extruded profiles, in particular those connected at right angles to one another. Locking rods 106, 107 are provided in a vertical area of ​​the frame profile 104. The locking rods 106, 107 are designed to secure the first sash frame 102 in the closed position, i.e., to lock it. In the locking position of the connecting rods 106, 107 shown here, the connecting rods extend out of the profile frame 104 of the sash frame 102 and into the frame 114 shown schematically here. Accordingly, the connecting rods 106, 107 form a positive locking connection between the sash frame 102 and the frame 114 in the locking position.

[0027] The drive rods 106, 107 are adjustable via a schematically depicted drive rod slide 108. The drive rod slide is accessible, for example, via the door rebate when the second sash frame 112 is open. As soon as the user uses the drive rod slide 108 to open the fixed sash 102, the drive rods 106, 107 are moved into their open position, i.e., pulled out of the frame, so that the sash frame 102 is freely movable, i.e., freely pivotable, relative to the frame 114.

[0028] As mentioned above, the two sash frames 102, 112 can each be equipped with drop-down bottom seals 116, 118 to improve the thermal insulation properties of the door 100. The drop-down bottom seals preferably extend across the entire width of the sash frames to achieve the most effective insulation possible. For this reason, it is provided here that at least the lower drive rod 107 extends through the drop-down bottom seal 116 of the first sash frame 102. For this purpose, a vertical channel can be provided in the drop-down bottom seal 116 to accommodate the drive rod 107. In the locking position shown here, the lower drive rod 107 extends through the drop-down seal 116 and protrudes from it, thus creating a positive connection with the frame 114. In the open position (not shown), the lower connecting rod 107 is retracted (upwards in) such a way as to FIG. 1) that its lower end is received in the lowerable floor seal 116 without protruding from it.

[0029] In summary, it should be noted that at least the lower drive rod 107 is located within the bottom seal in both its locked and open positions. Therefore, according to the prior art, it is necessary to remove the sash frame and lay the inert sash horizontally in order to inspect or replace the bottom seal. Based on this problem, the present invention discloses a drive rod that allows the bottom seal to be replaced without removing the inert sash. It should also be noted here that the double-leaf door according to FIG. 1 This is merely an example. Naturally, the operating rod according to the invention can also be used in any other door or window that requires an operating rod.

[0030] The FIG. 2 Figure 1 shows a first embodiment of a connecting rod according to the present invention. This can, for example, be used as the lower connecting rod of a fixed wing (see Figure 2). FIG. 1 The connecting rod 200 according to the invention comprises a first connecting rod section 202 and a second connecting rod section 204. The first connecting rod section 202 has a first end (not shown) which, in the installed state, is connected to a connecting rod slide of a locking system. An opposite, second end 206 can be connected to the second connecting rod section 204 via a fastening area 208. In the embodiment according to FIG. 2 The first connecting rod section 202 is detachably connectable to the second connecting rod section 204. However, in the installed state, the second end 206 of the first connecting rod section 202 is always received within the fastening area 208 and thus connected to the second connecting rod section 204.

[0031] The fastening area 208 of the embodiment according to FIG. 2 is an integral part of the second drive rod section 204. In particular, the fastening area 208 is arranged at the first end of the second drive rod section 204. An opposing, second end 210 serves to fix the sash frame in its closed position in the operating configuration, as is the case, for example, in FIG. 1As illustrated, the mounting area 208 need not be formed integrally with the second connecting rod section. Rather, the second connecting rod section can also be detachably attached to the mounting area 208. For example, the second connecting rod section can be inserted or screwed into the end of the mounting area shown below. It is also conceivable that the mounting area is an integral part of the first connecting rod section 202, in which case the second connecting rod section can be inserted into the mounting area.

[0032] The fastening area has a longitudinal opening 212, which extends at least partially in the longitudinal direction of the fastening area 208. This opening can, for example, be designed as a blind hole. The longitudinal opening 212 is designed such that it can receive the second end 206 of the first connecting rod section 202.

[0033] The mounting area 208 further comprises recesses 214, 216, which extend inwards from the outer surface of the housing of the mounting area 208. In particular, the recesses 214, 216 extend into the longitudinal opening 212, so that a portion of the longitudinal opening 212 is accessible through the recesses, in particular lateral milling.

[0034] The first connecting rod section 202 has first and second recesses 218, 220 in the region of its second end. The recesses 218, 220, which are designed as annular grooves, are spaced apart from each other in the longitudinal direction of the first connecting rod section 202. As will be explained in more detail later, the distance between the two recesses 218, 220 of the first connecting rod section 202 determines the difference in length between the adjustable overall length of the connecting rod according to the invention.

[0035] In a first configuration, referred to as the operating configuration, the first connecting rod section is inserted into the longitudinal opening 212 of the mounting area 208 until the first recess (annular groove) 218 ​​aligns with the recesses 214 and 216 of the mounting area. A fastening element 222, designed as a shackle / locking clip, serves to secure the first connecting rod section 202 in its operating configuration. Specifically, the fastening element 222 is pushed onto the mounting area 208 at the level of the recesses 214 and 216 as soon as the first recess 218 of the first connecting rod section 202 aligns with the recesses 214 and 216. This causes the fastening element 222 to engage in the first recess 218 of the first connecting rod part 202 and prevents further longitudinal movement of the first connecting rod part 202 relative to the fastening area 208 and thus also relative to the second connecting rod part 204.In the operating configuration described here, the connecting rod 200 has its greatest overall length. According to this configuration, the second end 210 of the second connecting rod section 204 is always received in the retractable bottom seal, i.e., in both the open and locked positions.

[0036] The novel drive rod 200 can be (temporarily) shortened compared to the operating configuration described above. This serves in particular to withdraw the second drive rod section 204 from the lowering bottom seal, as required with regard to the Figures 4 to 8 This will be explained in more detail later. This refers to the maintenance configuration.

[0037] To transfer the connecting rod 200 from the operating configuration described above to the maintenance configuration, the fastening element 222 is temporarily removed so that the first connecting rod section 202 is movable longitudinally relative to the fastening area 208 and thus relative to the second connecting rod section 204. In the FIG. 2As shown in the illustration, the first connecting rod section 202 can therefore be further inserted into the longitudinal opening 212 of the mounting area 208. For this purpose, the second connecting rod section 204 is raised until the second recess (annular groove) 220 of the first connecting rod section 202 is aligned with the recesses (lateral millings) 214, 216 of the mounting area. The mounting element 222 is then pushed back onto the mounting area 208 and thus placed in the second recess 220 of the first connecting rod section 202. Longitudinal movement of the second connecting rod section relative to the mounting area or the second connecting rod section 204 is again prevented. Those skilled in the art will recognize that the overall length in the maintenance configuration described here is shorter than the overall length of the connecting rod section 200 in the operating configuration.The change in length of the connecting rod 200 between the two configurations corresponds in particular to the distance between the two recesses 218, 220 of the first connecting rod part 202.

[0038] An alternative design for the fastening area is the FIG. 3 to be taken from the FIG. 3 The mounting area 308 shown has a cuboid housing which is provided with a longitudinal bore 312. The longitudinal bore can be a through bore in which the two connecting rod parts are fastened. Alternatively, as described above, it can be an integral part of one of the two connecting rod parts, for example, the second connecting rod part (not shown), while only the other connecting rod part is movable relative to the mounting area 308.

[0039] In contrast to the fastening area 208 according to FIG. 2 , the fastening area 308 according to the variant in FIG. 3another fastening element 322. In particular, the fastening element 322 is, according to the FIG. 3 a setscrew which is screwed into a lateral opening 314 of the mounting area. In the operating and maintenance configuration, the setscrew can be screwed into the lateral opening 314 until it engages positively with one of the two recesses of the first connecting rod part (not shown).

[0040] It should be mentioned at this point that the invention is not limited to the inventions described in the Figures 2 and 3The fastening means shown 222, 322 are not limited. Rather, any fastening mechanism can be chosen that allows a detachable connection between the fastening area and the first connecting rod section. It should also be noted that the fastening area 308 does not have to be cuboid in shape. Other shapes, such as other prism shapes, are of course conceivable, as long as they can be arranged in the frame profile of the sash frame and allow longitudinal displacement within the frame profile.

[0041] The FIG. 4 Figure 1 shows a partial view of a sash frame, which is part of a window or door sash according to the present invention. The sash frame 400 has a frame profile 402 in which a drive rod 200 according to the invention is arranged. In the FIG. 4In the illustration shown, the connecting rod 200 is in the operating configuration, in particular in the open position of the operating configuration.

[0042] The frame profile 402 has a rebate area 404. The rebate area 404 is particularly accessible during normal operation of the sash.

[0043] In the fold area 404 there is an opening through which the fastening element 222 is accessible. In other words, the fastening area (not shown here) of the drive rod according to the invention is arranged in the profile frame 402 such that it is accessible at least partially via the opening 407.

[0044] The FIG. 4 Furthermore, the second end 210 of the second connecting rod section of the connecting rod 200 can be removed. This extends through a retractable bottom seal 406, in particular through a vertical opening 408 of the bottom seal 406. In the FIG. 4In the operating configuration shown, the second end 210 of the second drive rod section protrudes from the vertical opening 408 of the retractable bottom seal. The drive rod 200 is in its open position here, in which the sash frame is released. In the closed position, the second end 210 would protrude even further from the opening 408.

[0045] A cross-sectional view through the profile frame 402 according to FIG. 4 is the FIG. 5 to be seen. In the illustrated embodiment, the profile frame has an inner half-shell 410, which is connected to an outer half-shell 416 via two insulating webs 412, 414. The inner shell 410 and the outer shell 416 can be made of extruded aluminum profiles. The drive rod 200 is arranged in the space between the two insulating webs 412, 414. From FIG. 5It is further evident that the fastening area 208 is arranged at the level of the opening 407. The opening 407 is provided in particular on the insulated web 412 on the fold side of the profile arrangement 402.

[0046] The FIG. 6 shows the embodiment according to the Figures 4 and 5 in the operating configuration, whereby, compared to Figures 4 and 5The fastening element has already been released by pulling it out of the opening 407. In this state, the fastening area 208 and the associated second drive rod section (not shown) are movable in the longitudinal direction. In the illustrated view, this means that the fastening area and the second drive rod section can be moved vertically relative to the first drive rod section 202 in order to transfer the drive rod from the operating configuration to the maintenance configuration. For this purpose, the fastening area or the second drive rod section is moved, in particular, upwards, in the direction of the first drive rod section 202. In an embodiment not shown, the fastening area can, for example, incorporate a handle element (e.g., a lever handle).a projection) which extends out of the opening 407 and allows the user to lift the mounting area together with the second drive rod part until the recesses of the mounting area (see . FIG. 2 ) align with the grooves of the first connecting rod section. Such a maintenance position is the Figure 7 and 8 to be taken.

[0047] In the FIG. 7 The mounting area was moved upwards, that is, towards the first connecting rod section. Once the recesses of the mounting area are aligned with the upper recess of the second connecting rod section, the user can reinsert the mounting element.

[0048] In the FIG. 8The fastening element is connected to the recesses. It should be noted here that the opening 407 in the rebate area 404 of the profile frame 402, for example, is designed as an elongated hole, the length of which corresponds at least to the desired change in length of the drive rod 200 between the operating configuration and the maintenance configuration.

[0049] The Figure 7 and 8 It can also be seen that the second end 210 of the second drive rod section 204, in the maintenance configuration shown here, is pulled out of the vertical opening 408 of the drop-down bottom seal 406. The drop-down bottom seal can now be pulled out of the frame profile in the direction of the rebate area in order to replace or service it.

[0050] The invention is not limited to the embodiments shown in the figures, but results from a combination of all the features disclosed herein, provided that these fall within the scope of protection defined in the attached claims. Reference symbol list

[0051] 100 Double-leaf door 102 First leaf frame 104 Frame profile 106, 107 Drive rods 108 Drive rod slide 110 Door handle 112 Second leaf frame 114 Cover frame 116, 118 Drop-down bottom seal 200 Drive rod 202 First drive rod section 204 Second drive rod section 206 Second end 208 Mounting area 210 Second end 212 Longitudinal opening 214, 216 Recesses 218, 220 Recesses 222 Fastening device 308 Mounting area 312 Longitudinal bore 314 Lateral opening 322 Fastening element 400 Leaf frame 402 Frame profile 404 Rebate area 406 Bottom seal 407 Opening 408 vertical opening 410 inner half shell 412, 414 insulating bar 416 outer half shell

Claims

1. Sash for doors or windows, the sash comprising: - a sash frame (102); - a drive rod slider (108); - a drive rod (200); - a lowerable bottom seal 406) which is accommodated in the sash frame, wherein the drive rod (200), when installed, is connected to a drive rod slider (108) in such a way that the drive rod (200) is movable between a locking position, in which the sash is fixed, and an open position, in which movement of the sash is enabled, the drive rod (200) comprising: - a first drive rod portion (202) with a first end for connecting the first drive rod portion (202) to the drive rod slider and an opposite second end (206); - a second drive rod portion (204) with a first end for connecting the second drive rod portion (204) to the second end (206) of the first drive rod portion; - a fastening portion (208) for connecting, in particular detachably connecting, the first and second drive rod portions (202, 204), wherein the fastening portion (208) comprises a maintenance configuration in which the drive rod portions are connected such that the drive rod (200) comprises a first overall length, and an operating configuration in which the drive rod portions are connected such that the drive rod (200) comprises a second overall length, the second overall length being longer than the first overall length, wherein the second drive rod portion (204) has a second end opposite the first end, and wherein the drive rod (200) is arranged in the sash frame such that the second end, in the operating configuration, is received within an opening (408) of the bottom seal (406) and, in the maintenance configuration, is withdrawn from the opening (408) of the bottom seal (406).

2. Sash according to claim 1, wherein the fastening portion (208) has exactly two configurations for adjusting the overall length of the drive rod (200) between the first and second overall lengths.

3. Sash according to claim 1 or 2, wherein the fastening portion (208) is formed integrally with the second end of the first drive rod portion (202) or integrally with the first end of the second drive rod portion (204).

4. Sash according to any one of claims 1 to 3, wherein the first drive rod portion (202) and / or the second drive rod portion (204) is accommodated within the fastening portion (208) in a longitudinally displaceable manner.

5. Sash according to claim 4, wherein the first drive rod portion (202) and / or the second drive rod portion (204) is locked in a first position in the longitudinal direction in the maintenance configuration of the fastening portion (208) and in a second position in the longitudinal direction in the operating configuration of the fastening portion (208).

6. Sash according to claim 5, wherein the drive rod (200) has a fastening means (222) for locking the first and / or second drive rod portion in the first or second position, respectively.

7. Sash according to any one of claims 1 to 6, wherein the first or second drive rod portion (202, 204) has a first and a second recess (218, 220), in particular grooves, which are spaced apart from each other in the longitudinal direction, wherein the distance between the recesses in the longitudinal direction corresponds to the difference in length between the first and second overall lengths of the drive rod (200).

8. Sash according to claim 7, wherein the fastening portion (208) has a fastening means (222) which is connected to the first recess (218) in the maintenance configuration and to the second recess (220) in the operating configuration.

9. Sash according to claim 8, wherein the fastening means is a safety clip or a grub screw.

10. Sash according to any one of claims 1 to 9, wherein the drive rod (200) is arranged in the sash frame in such a way that at least a portion of the fastening portion (208) is accessible from the outside for adjusting the configuration.

11. Sash according to claim 10, wherein the second drive rod portion comprises a handle element which extends through an opening in the sash frame and is designed to enable longitudinal displacement, in particular lifting, of the second drive rod portion from the outside.