Retracting device and door or window arrangement

Abstract

The present invention relates to a retraction device (10) comprising a housing (12), a damper (16) with a retractable piston rod, a housing section (20) in which a base (22) and two wall sections (24) define a guide channel (26), and a receiving unit (30) which is slidably guided in the guide channel (26). The receiving unit (30) has a head section (57), a mounting section (58), and a coupling section (59) arranged between them. The coupling section (57) has a first bore (72) extending from the top (67), wherein a guide unit (75) is provided which is designed in such a way that it can be mounted on the coupling section (59) in a rotationally fixed manner and has a second bore (76), so that the guide unit (75) can be fastened to the coupling section (59) via the first bore (72) and the second bore (76) by means of a screw (77).

Description

[0001] The invention relates to a retraction device having the features of the preamble of claim 1. The invention further relates to a set comprising a retraction device having the features of the dependent claim. The invention also relates to a door or window arrangement having the features of the further dependent claim.

[0002] A retraction device and a sliding door equipped with it are known, for example, from EP 3 034 752 A1. The retraction device described there has a damper on the door leaf side and a follower coupled to the damper, which is movable along a guide track and pivots downwards in an end position. On the frame side, a holder with a projection attached to it is provided, which can engage with the follower depending on the sliding position of the door leaf. The follower or the projection is spring-mounted perpendicular to the guide track to facilitate coupling between the projection and the follower. With this retraction device, the projection and the follower must be precisely aligned for reliable operation due to the spring-mounted bearing. The spring-mounted bearing also limits the maximum forces that can be transmitted.The insertion device has an effect on guiding the wing relative to the frame, if at all, only if the projection and the driver are coupled together and there is only minimal play between these elements.

[0003] Another retraction device and a sliding door equipped with it are also known from EP 2 397 637 A1.

[0004] The invention is based on the objective of providing, using simple design means, an easy-to-install retraction device that has a positive effect on guiding the sash relative to the frame. The invention achieves this objective with a retraction device having the features of claim 1.

[0005] The closing device is designed and / or intended for a door or window assembly comprising a frame and a sliding sash. Specifically, the closing device may be a soft-close mechanism or a soft-close damper.

[0006] The retraction device comprises a housing to which a (linear) damper is attached at one end. The damper has at the other end a retractable piston rod, the free end of which is coupled to a receiving unit, preferably indirectly.

[0007] The housing of the feed device has a housing section in which a base and two opposing wall sections projecting from the base define a guide channel. The receiving unit is guided so as to be slidable within the guide channel along its longitudinal axis or direction.

[0008] The receiving unit has (at its free end, facing away from the damper) a head section with a receptacle for a release section or release pin of a release piece. Clamping jaws can be pivotally mounted on the head section, which can be actuated, at least indirectly, via the release piece or its release section.

[0009] The receiving unit further comprises a mounting section via which the receiving unit is at least indirectly coupled to the piston rod of the damper. For example, the mounting section can be connected to the piston rod by means of a coupling element (preferably designed as a U-shaped sheet metal piece). The mounting section can have a passage (perpendicular to the longitudinal axis of the channel) for receiving a mounting bolt, by means of which the coupling element can be attached to the mounting section.

[0010] In addition, the receiving unit has a coupling section which is arranged (along the longitudinal axis of the channel) between the head section and the mounting section of the receiving unit.

[0011] The coupling section has a lower height (orthogonal to the base) than the head section. Furthermore, the coupling section has a top surface. This top surface faces away from the base and is positioned closer to the base than the top surface of the head section (step at the transition from the head section to the coupling section). The coupling section has a first bore extending from its top surface.

[0012] The feed device also includes a guide unit designed to be mounted on the coupling section in a rotationally fixed manner. The guide unit has a second bore, allowing it to be attached to the coupling section via a screw (passing through both the first and second bores).

[0013] The proposed design allows for variable guidance on the receiving unit. This enables the desired guide unit to be easily and reliably coupled to the receiving unit. When installed on a door or window assembly, the retraction device can provide improved guidance, particularly along the longitudinal sides of a sliding sash, when the guide unit (retraction device mounted on the sash side) engages in a guide rail on the frame.

[0014] The coupling section serves to connect a guide unit or as an interface for the guide unit. The reduced height compared to the head section (step at the transition from head section to coupling section) contributes, like a mechanical stop, to a defined positioning of the guide unit on the receiving unit. When the guide unit is attached to the receiving unit, it moves along the longitudinal axis of the channel with the receiving unit. When the guide unit is placed on the coupling section, the first and second bores are aligned.

[0015] Specifically, the receiving unit in the guide channel can be moved between a ready position, in which the receiving unit is located at the end of the guide channel furthest from the damper, and a retracted position, in which the receiving unit is moved along the guide channel towards the damper. In other words, in the retracted position, the receiving unit is then located at or near the damper.

[0016] Preferably, the piston rod of the damper can be pre-tensioned in such a way that it can move the receiving unit into the retracted position. The piston rod of the damper can preferably be pre-tensioned in its extension direction relative to the damper (i.e., away from the receiving unit).

[0017] As already indicated, the receiving unit can have a mechanism with two opposing clamping jaws, each pivotably mounted on the receiving unit, which can be actuated at least indirectly (directly or directly) by the release piece.

[0018] The mechanism of the receiving unit can be configured such that, in the ready position of the receiving unit, the clamping jaws are in a swung-out position. In this position, the clamping jaws project beyond the clear cross-section of the guide channel with their rear-engaging sections (laterally, i.e., towards the wall sections) and engage the wall sections (at the end of the guide channel furthest from the damper) from behind. This allows the receiving unit to be held at the end of the guide channel furthest from the damper. Retraction of the receiving unit into the retracted position is thus prevented. The release element can then, at least with one release section, move into or out of a receiving space between the clamping jaws.

[0019] The mechanism of the receiving unit can also be designed such that, when actuated by the release mechanism, the clamping jaws can be pivoted into a retracted position, or are pivoted into such a position. This releases the rear grip between the rear grip sections and the wall sections, and the clamping jaws lie within the clear cross-section of the guide channel, allowing the receiving unit to be moved into the retracted position by means of the damper. In this way, with a door or window assembly equipped with the retraction device, the sliding sash can be softly pushed or pulled shut. When the clamping jaws are pivoted into the retracted position, at least the release section of the release mechanism can be trapped within the receiving space.

[0020] Regarding further details, reference is made at this point to European patent application 24 164 583.7, the disclosure of which is hereby explicitly referenced and included.

[0021] The mounting section can be narrower than the head section when viewed perpendicular to the longitudinal axis of the channel. Specifically, the mounting section can have a transverse bore extending either perpendicular or transverse to the longitudinal axis of the channel to accommodate a transverse bolt. This allows one end of the coupling element to be attached to the mounting section by means of a bolt, with the coupling element connecting the mounting unit to the piston rod of the damper.

[0022] In a preferred embodiment, the receiving unit on the coupling section can have lateral recesses, such that the side surfaces of the coupling section facing the wall sections of the housing section are spaced away from these wall sections. Thus, the coupling section has a narrower width perpendicular to the longitudinal axis of the channel than the head section. This results in the lateral recesses (female part or pockets) that can serve as coupling points. Furthermore, the lateral recesses contribute to material savings and friction reduction (the side surfaces of the coupling section do not contact the wall sections of the housing section). The width of the lateral recesses can be 10–30% of the clear width of the guide channel.

[0023] Preferably, the first and / or second bore can each be designed as a through hole or as a single through hole. This allows for further weight savings. Furthermore, different screw connections are possible, as the screw connection can be made from below (from the base) or from above (towards the base), depending on the guide unit used. The first and / or second bore can each be designed as a (smooth) through hole or each (one or both bores) can be provided with an internal thread. In addition to using screws with an external thread corresponding to the internal thread, the use of self-tapping screws is also conceivable.

[0024] Preferably, a groove can be formed at the end of the head section facing the coupling section, and a corresponding lug can be formed on the guide unit. When the guide unit is placed on the coupling section (placed state), the lug engages with the groove. This contributes to a stable and rotationally rigid coupling between the guide unit and the receiving unit (defined coupled state). The groove extends along or parallel to the longitudinal axis of the channel on the head section, specifically at the end of the head section facing the damper. Optionally, the lug can be connected to a material thickening on the underside of the base section of the guide unit. The lug can have the same height (material thickness) as the material thickening. This contributes to the stability of the lug. The groove and the lug are preferably complementary to each other.The groove and the nose can each have a cuboid shape.

[0025] In a preferred embodiment, the guide unit can have a base section in which the second bore is formed, with one or more guide sections extending from the base section along a first direction. Thus, depending on requirements, one or more guide sections can be attached to the guide unit, which are, for example, adapted to special frame-side guide rails (customer profiles). The first direction (first axis of extension) is, in particular, oriented parallel to the central longitudinal axis of the second bore or orthogonal to the base section.

[0026] Advantageously, a guide section can extend from the base section (along the first direction) of the guide unit, on which a guide roller is rotatably mounted and / or a sliding head is formed. Thus, guidance can be achieved by means of the guide roller or a sliding head or sliding element (guide elements) of the guide unit (the guide roller or sliding head can perform a guiding function), for example, along a guide rail attached to the frame of a door or window assembly. Therefore, the appropriate guide element can be selected depending on the profile of the guide rail or the guiding requirements of the respective door or window assembly. The axis of rotation of the guide roller can be oriented parallel to the first direction (first axis of extension) or orthogonal to the base section of the guide unit. A pin can be formed on the guide section on which the guide roller is rotatably mounted.The guide roller can be mounted by means of a rolling bearing, in particular a ball bearing. The sliding head can be designed as a self-contained hollow cross-section whose central longitudinal axis (central axis of the cavity) is oriented orthogonally to the base section. The central longitudinal axis of the hollow cross-section and the central longitudinal axis of the journal are preferably oriented parallel to each other.

[0027] In a preferred embodiment, both the guide roller and the sliding head can be provided on the guide section of the guide unit and arranged side by side in such a way that, when the guide unit is mounted on the coupling section, they are adjacent to each other along or parallel to the longitudinal axis of the channel, with the sliding head being designed as a safety head. The guide roller thus projects laterally beyond the safety head, so that the guide roller generally performs a guiding function, e.g., relative to a guide rail arranged on the frame side. The safety head can serve as a safety device. It only comes into play if the guide roller or its bearing fails (e.g., breakage of the pin). The safety head can then prevent the sash from falling out of the frame. This contributes to the safe guidance of even short sliding sashes.The sliding head and the guide roller can be arranged side by side on the guide section and be essentially at the same height. The guide roller's outer diameter is dimensioned such that it projects laterally beyond the guide section and on the side facing away from the sliding head. The guide roller also projects laterally beyond the sliding head.

[0028] The guide unit with guide section and attached safety head and / or guide roller can constitute a first guide unit (first-type guide unit). Such a guide unit can optionally have holding sections extending away from the base section in the opposite direction to the guide section (described further below).

[0029] In an alternative configuration, two guide sections can extend from the base section (along its upper surface in the first direction) of the guide unit, spaced apart from each other, with the second bore formed between the two guide sections. This provides an alternative guide unit that allows adaptation to specific guide rails and / or frame profiles of a door or window assembly. The guide sections can each extend orthogonally from the base section (along its upper surface) either along or parallel to the first direction (first axis of extension).

[0030] The guide sections can be designed to define a cuboid-shaped gap. The guide sections themselves can be plate-shaped and / or oriented parallel to each other. When the guide unit is mounted on the coupling section of the receiving unit (mounted state), the central longitudinal plane of the guide sections is oriented parallel to the wall sections. A material thickening, preferably cuboid-shaped, can be formed on the underside of the base section. If a lug (counterpart to the groove on the head section) is present, it can be connected to the material thickening. The lug can, for example, extend laterally from the material thickening. The second bore can intersect the material thickening.

[0031] Advantageously, the guide sections can be spaced apart from each other transversely to the longitudinal axis of the guide channel when the guide unit is mounted (the guide unit is mounted on the coupling section). This promotes stable (sliding) guidance even on relatively wide guide rails, while requiring only a comparatively small amount of material for the guide unit itself. Thus, when mounted, one guide section can be positioned on one side of the longitudinal axis of the channel and the other on the opposite side.

[0032] The guide unit with two parallel guide sections spaced apart perpendicular to the longitudinal axis of the guide channel can represent a second guide unit (second type guide unit). This guide unit can be designed without stop sections extending away from the base section in the opposite direction to the guide sections.

[0033] In another possible embodiment, the guide sections can be spaced apart from each other along the longitudinal axis of the channel when the guide unit is mounted (the guide unit is mounted on the coupling section). Aligning the guide sections along the longitudinal axis of the channel ensures stable guidance, which, for example, counteracts rotation of the wing about the vertical axis in the case of short sliding wings. The spacing of the guide sections can be formed by a cylindrical, particularly circular, recess. Preferably, the central longitudinal axis of the recess and the central longitudinal axis of the second bore are aligned.

[0034] The guide unit with two guide sections spaced apart along the longitudinal direction of the guide channel can constitute a third guide unit (third-type guide unit). Such a guide unit can optionally have holding sections extending away from the base section in the opposite direction to the guide section (described below).

[0035] In a preferred embodiment, preferably two retaining sections extend along the base section in a second direction opposite to the first direction (second axis of extension). These retaining sections are designed such that, when the guide unit is mounted on the coupling section, they laterally engage the coupling section. The retaining sections are designed to fit into the lateral recesses of the coupling section. This further stabilizes the coupling of the guide unit to the coupling section or the receiving unit, thus improving the guidance of the sliding wing. The retaining sections can extend away from the base section or from a material thickening of the base section.

[0036] The aforementioned task is also solved by a set with the features of the subordinate claim.

[0037] The set comprises a feed device with one or more of the aspects described above, as well as a further or second guide unit that differs from the (first) guide unit. Thus, in addition to a first guide unit, e.g., a guide unit of the first type, the set may also include a further or second guide unit, e.g., a guide unit of the second type or a guide unit of the third type (described above).

[0038] Regarding the advantages achievable with this, please refer to the relevant explanations concerning the retraction device. Due to the different guide units, the retraction device can be easily adapted to the specific door or window configuration, for example, by selecting and installing the guide unit that meets the requirements.

[0039] Advantageously, the set can include a third guide unit that differs from the (first) and second guide units. Thus, in addition to a first guide unit, e.g., a guide unit of the first type, and a second guide unit, e.g., a guide unit of the second type, the set can also include a third guide unit, e.g., a guide unit of the third type (described above). This allows for even greater adaptation of the retraction device to the specific door or window arrangement.

[0040] The set may expediently include a release mechanism (mounted on or to be mounted on the frame) for actuating the mounting unit. The release mechanism actuates the mounting unit or the clamping jaws pivotally mounted on the mounting unit, at least indirectly, for example via an actuating mechanism of the mounting unit.

[0041] The release element can have a mounting section, preferably cuboid in shape, with one or more through-holes for attaching the release element, e.g., to the frame. A release section, which may have a circular cross-section (release pin), can extend from the mounting section. Overall, the release element can have a substantially T-shaped form.

[0042] The measures described in connection with the feed device and / or those explained below can be used to further develop the set.

[0043] The aforementioned problem is also solved by a door or window arrangement with the features of the further subordinate claim. Regarding the advantages achievable thereby, reference is made to the relevant explanations concerning the retraction device.

[0044] The door or window assembly comprises a (stationary) frame, a sash that is movable relative to the frame between an open and a closed position along a sliding direction vr, and a retraction device with one or more of the aspects described above. Furthermore, the door or window assembly comprises a release element for actuating the receiving unit. The retraction device is arranged and, if necessary, attached to the sash, and the release element is arranged and, if necessary, attached to the frame, with the retraction device and the release element facing each other.

[0045] "Facing each other" means that, depending on the position of the wing relative to the frame along the direction of movement, the release piece can be coupled or connected to the retraction device (receiving unit).

[0046] The release mechanism and the retraction device are each arranged on an end face of the frame and the sash, respectively, which move relative to each other when the sash is moved along the direction of movement. Preferably, the release mechanism can be arranged on a lower (sash-facing) side of an upper frame cross member. The retraction device can be arranged on an upper (frame-facing) side of an upper sash cross member.

[0047] The sash can be a sliding sash or a lift / slide sash.

[0048] Preferably, the release element is attached to the frame along the direction of movement such that when the retracting device, during the closing of the sash, encounters the release element or the release section of the release element with its clamping jaws, the sash is still open by a defined dimension s. In other words, in this position, the sash would still need to be moved by the defined dimension s to reach the closed position relative to the frame. The release element must then be positioned on the frame such that the travel w of the receiving unit between the ready position and the retracted position is greater than or equal to the defined dimension s (w ≥ s).

[0049] The measures discussed in connection with the retraction device and / or those explained below can be used to further design the door or window arrangement.

[0050] The invention is explained in more detail below with reference to the figures, where identical or functionally identical elements are provided with identical reference numerals, possibly only once. The figures show: Fig. 1a, two embodiments of a feed device, each in a perspective and partially cutaway view, wherein the receiving unit is in a ready position ( Figure 1a ) and once in the retracted position ( Figure 1b ); Fig. 2a,b the receiving unit of the feed device made of Figure 1a and Figure 1b in isolation in a perspective top view ( Figure 2a ) and a perspective bottom view ( Figure 2b ); Fig. 3a,b the feed device made of Figures 1a and 1b each in an enlarged perspective partial view, once with the guide unit attached and uncropped ( Figure 3a ) and partially cut with attached guide unit ( Figure 3b ); Fig. 4a-c the guide unit of the feed device made of Figs. 3a and 3bin isolation in a perspective side view ( Figure 4a ), a perspective top view ( Figure 4b ), and a perspective view from below ( Figure 4c ); Fig. 5a,b the feed device made of Figures 1a and 1b in an enlarged perspective partial view with a second guide unit attached, once uncropped ( Figure 5a ) and once partially cut ( Figure 5b ); Fig. 6a,b the guide unit of the feed device made of Figures 5a and 5b in isolation in a perspective top view ( Figure 6a ) and a perspective view from below ( Figure 6b ); Fig. 7a,b the feed device made of Figures 1a and 1b in an enlarged perspective view with a third guide unit added, once uncut ( Figure 7a ) and once partially cut ( Figure 7b ); Fig. 8a,b the guide unit of the feed device made of Figures 7a and 7b in isolation in a perspective top view ( Figure 8a) and a perspective view from below ( Figure 8b ); Fig. 9 a door or window arrangement with a retraction device in a schematic and partially cutaway front view; and Fig. 10a,b the door or window arrangement made of Figure 9 in an enlarged and partially cut-away view, showing the wing in the closed and lowered position ( Figure 10a ) and is once in the raised and partially open position ( Figure 10b ).

[0051] The Figures 1a and 1b show an embodiment of a feed device, which is generally designated by reference numeral 10.

[0052] The insertion device 10 is designed and / or intended for a door or window arrangement 100 comprising a frame 102 and a sliding sash 116, which is described further below (see below). Fig. 9 , 10a and b) . First, however, we will discuss the infeed device 10 itself.

[0053] The retracting device 10 has a housing 12, which has a mounting tab 14 at each end for attaching the retracting device 10 to the wing 116, e.g., by screwing it in place. A linear damper 16 is attached to one end of the housing 12 (retaining bolt 18). At the other end, the damper 16 has a retractable piston rod (not shown). The housing 12 has a housing section 20 between the mounting tabs 14, in which a base 22 and two opposing wall sections 24 projecting from the base 22 define a guide channel 26.

[0054] The piston rod (not shown) is coupled at its free end to a receiving unit 30 via a coupling element 28. The receiving unit 30 is slidably guided in the guide channel 26 along its longitudinal axis 27. In the example, the receiving unit 30 can be positioned in the guide channel 26 between a ready position, in which the receiving unit 30 is located at the end of the guide channel 26 furthest from the damper 16 (see Figure 1). Figure 1a ), and are moved into a retracted position in which the receiving unit 30 is moved along the guide channel 26 towards the damper 16 or is in a retracted position (see Figure 1b ).

[0055] The piston rod (not shown) is pre-tensioned such that it can move the receiving unit 30 into the retracted position. The piston rod of the damper 16 is pre-tensioned relative to the damper 16, particularly in its extension direction.

[0056] As already indicated, the damper 16 is attached to the housing 12, specifically to the wall sections 24, at its fixed end by means of the retaining bolt 18, with the fixed end of the damper 16 facing the receiving unit 30. The free end of the piston rod is coupled to the receiving unit 30 by means of the coupling element 28, which extends from the free end of the piston rod past or over the fixed end of the damper 16 to the receiving unit 30. In this example, the damper 16 is designed as a gas spring.

[0057] The coupling element 28 has a U-shaped cross-section that is open towards the base 22 of the housing section 20 and covers the damper 16. Specifically, the coupling element 28 is a sheet metal part formed into a U-profile (coupling plate). Recesses 34 are formed in the side walls 32 of the coupling element 28. The coupling element 28 has tabs 36 at both ends, which are connected to the side walls 32 and via which the coupling element is connected on one side to the receiving unit 30 by a transverse bolt 38 and on the other side to the piston rod of the damper 16 (not shown).

[0058] In the wall sections 24 of the housing 12, opposing, in this example T-shaped recesses 40 are formed. A form spring 42 is positively attached to each of the recesses 40. The form springs 42 overlap the coupling element 28. The form springs 42 each act as a locking element, preventing the coupling element 28 from unintentionally leaving the guide channel 26 upwards (away from the base 22).

[0059] In the wall sections 24 of the housing 12, in the area of ​​the damper 16, i.e., where the damper 16 or the damper housing is located, one or more cups 44 are embossed into the wall sections 24. The cups 44 project into the guide channel 26 and reduce its cross-section. This allows the damper to be centered relative to the guide channel 26. The recesses 34 in the side walls 32 of the coupling element 28 are shaped such that the cups 44 are located in the recesses 34 or run in the recesses 34 when the receiving unit 30 and the coupling element 28 are moved.

[0060] The receiving unit 30 comprises a receiving body 46, which is composed of several sections (described below), and a mechanism 48. The mechanism 48 has two opposing clamping jaws 50, each pivotally mounted on the receiving unit 30. The clamping jaws 50 can be actuated by a release element 15 located on the frame (explained further below). Specifically, the clamping jaws 50 are pivotally mounted on the receiving body 46 by means of cylindrical pins 52. The clamping jaws 50 define a receiving space 54 between themselves for a release section of the release element.

[0061] The clamping jaws 50 are positioned between a swung-out position (see Figure 1a ) and pivotable into a swiveled position (see below). Figure 1bIn the swung-out position, the clamping jaws 50 project beyond the clear cross-section of the guide channel 26 with its rear-engaging sections 56 and engage the wall sections 24 from the front. In the swung-in position (e.g., as a result of actuation by the release element), the rear engagement between the rear-engaging sections 56 and the wall sections 24 is released, and the clamping jaws 50 lie within the clear cross-section of the guide channel 26, so that the receiving unit 30 can be moved into the retracted position by means of the damper 16.

[0062] As already indicated, the receiving unit 30 (receiving body 46) has several sections, namely a head section 57, a fastening section 58 and a coupling section 59 arranged between these two sections (see Fig. 2a and 2b ).

[0063] The head section 57 has a receptacle or receiving space 54 for a release section or release pin of the release piece 15. Furthermore, bearing points 60 are provided on the head section 57, on which the clamping jaws 50 are pivotably mounted by means of cylindrical pins 52. The head section 57 has a top surface 62, a bottom surface 63, and two side surfaces 64, 65. The side surfaces 64, 65 can abut the wall sections 24 of the guide channel 26.

[0064] A groove 55 is formed at the end of the head section 57 facing the coupling section 59. The groove 55 extends along or parallel to the longitudinal axis 27 of the channel on the head section 57, specifically at the end of the head section 57 facing the damper 16. In this example, the groove 55 has a cuboid shape.

[0065] The mounting section 58 indirectly couples the receiving unit 30 to the piston rod of the damper 16 in the example. The mounting section 58 is connected to the piston rod of the damper 16 by means of the coupling element 28. The mounting section 58 has a passage 66 (oriented transversely to the longitudinal axis 27 of the channel when installed) for receiving the mounting bolt or transverse bolt 38.

[0066] The coupling section 59 is arranged (in the installed state of the receiving unit 30 along the longitudinal axis 27 of the channel) between the head section 57 and the mounting section 58 of the receiving unit 30. The coupling section 59 has a top surface 67, a bottom surface 68 and two side surfaces 69, 70.

[0067] The receiving unit 30 has lateral recesses 69', 70' on the coupling section 59, such that the side surfaces 69, 70 (which, when installed in the guide channel 26, face the wall sections 24 of the housing section 20) are each spaced apart from the wall sections 24. Thus, the coupling section 59 has a narrower width perpendicular to the longitudinal axis 27 of the channel than the head section 57.

[0068] The coupling section 59 has a lower height h (orthogonal to the base 22) than the head section 57. Thus, the upper surface 67 and the lower surface 68 of the coupling section 59 are closer together than the upper surface 62 and the lower surface 63 of the head section 57. In other words, when the receiving unit 30 is installed in the guide channel 26, the upper surface 67 of the coupling section 59 faces away from the base 22 and is closer to the base 22 than the upper surface 62 of the head section 57. This results in a step or ledge 71 at the transition from the head section 57 to the coupling section 59.

[0069] The coupling section 59 has a first bore 72 extending from the upper surface 67, which in this example is designed as a through bore. Optionally, the coupling section can have lateral webs 73 that project from the side surfaces 69, 70 of the coupling section 59 and delimit the coupling section 59 towards the fastening section 58.

[0070] The feed device 10 also has a guide unit 75. In the Figures 1a, 1b , 3a, 3b and 4a-c A first command unit 75 is shown (command unit of the first type).

[0071] The guide unit 75 is designed such that it can be mounted on the coupling section 59 in a rotationally fixed manner. The guide unit 75 has a second bore 76. In this example, the second bore 76 is designed as a through bore. The guide unit 75 can be fastened to the coupling section 59 via the first bore 72 and the second bore 76 by means of a screw 77 (see figure). Fig. 3bIn the example, the first bore 72 is designed as a (smooth) through bore and the second bore 76 has an internal thread. The screw 77, which has an external thread corresponding to the internal thread, is inserted from the underside 68 of the coupling section 59 through the first bore 72 and screwed into the second bore 76.

[0072] The first guide unit 75 has a base section 78 in which the second bore 76 is formed (see Fig. 4a-c From the base section 78, a guide section 79 extends along a first direction or a first extension axis R1. The first extension axis R1 is oriented parallel to the central longitudinal axis of the second borehole 76.

[0073] In this example, a sliding head 80 is formed on the guide section 79, and a guide roller 81 is rotatably mounted on it. The sliding head is designed as a safety head 80. The axis of rotation of the guide roller 81 is oriented parallel to the first axis of extension R1. A pin 86 is formed on the guide section 79, on which the guide roller 81 is rotatably mounted by means of a rolling bearing, e.g., a ball bearing (not shown). The safety head 80 is designed as a self-contained hollow cross-section, the central longitudinal axis M of which is oriented orthogonally to the base section 78 and parallel to the first axis of extension R1.

[0074] The guide roller 81 and the safety head 80 are arranged side by side such that, when the guide unit 75 is mounted on the coupling section 59, they are adjacent to each other along or parallel to the longitudinal axis 27 of the channel. The safety head 80 and the guide roller 81 are arranged side by side on the guide section 79 and, in this example, have essentially the same height. The outer diameter of the guide roller 81 is dimensioned such that it projects laterally (orthogonally to the first axis of extension R1) and on the side facing away from the safety head 80 beyond the guide section 79. The guide roller 81 also projects laterally beyond the sliding head 80. The actual guiding task (e.g., guiding in the frame-side running rail) is performed by the guide roller 81, and the safety head 80 only comes into play if the guide roller 81 or the pin 86 fails, as explained above.

[0075] At the base section 78 of the first guide unit 75, retaining sections 83 extend along a second direction or axis of extension R2 opposite to the first direction R1. These retaining sections are designed such that, when placed on the coupling section 59, they laterally encompass the coupling section 59 or abut the side surfaces 69, 70 of the coupling section 59. The retaining sections 83 are thus designed to fit into the lateral recesses 69', 70' of the coupling section 59. The retaining sections 83 are spaced apart from one another and oriented parallel to each other, so that they define a gap 84 between them that is aligned with the coupling section 59 or, when placed on the coupling section, can accommodate it.

[0076] In the Figures 5a-6b A second command unit 75' is shown (command unit of the second type).

[0077] The second guide unit 75' is also designed such that it can be mounted on the coupling section 59 in a rotationally fixed manner. The guide unit 75' has a second bore 76, which in this example is designed as a through bore. The second guide unit 75' can be fastened to the coupling section 59 via the first bore 72 and the second bore 76 by means of a screw 77 (see figure). Figure 5b In the example, the first bore 72 and the second bore 76 are each designed as (smooth) through bores. The screw 77, which is designed as a self-tapping screw or has a self-tapping external thread, is inserted through the second bore 76 and screwed into the first bore 72 from the top 67 of the coupling section 59. As it is screwed in, the screw 77 cuts an internal thread into the first bore 72.

[0078] The second guide unit 75' has a base section 78 in which the second bore 76 is formed. From the base section 78, two guide sections 79 extend away from each other along a first direction or a first extension axis R1, the two guide sections being spaced apart, with the second bore 76 being formed between the two guide sections 79 (see in particular Figures 6a and 6b ). The first extension axis R1 is oriented parallel to the central longitudinal axis of the second bore 76.

[0079] The guide sections 79 can be designed such that they define a cuboid-shaped gap 80. In this example, the guide sections 79 themselves are plate-shaped and oriented parallel to each other.

[0080] On the underside of the base section 78, a cuboid-shaped material thickening 81 is formed, which is intersected by the second bore 76. Furthermore, a lug 82 corresponding to the groove 55 is provided on the underside (counterpart to the groove 55 on the head section 57). The lug 82 can have a cuboid shape and extend laterally from the material thickening 81. When the guide unit 75 is placed on the coupling section 59, the lug 82 engages with the groove 55 (see figure). Figure 5b ).

[0081] When the guide unit 75' is mounted on the coupling section 59, the guide sections 79 are spaced apart from each other transversely to the longitudinal channel axis 27 of the guide channel 26. Thus, in the mounted state, one guide section 79 is arranged on one side of the longitudinal channel axis 27 and the other guide section 79 on the other side of the longitudinal channel axis 27.

[0082] In the example, the present second guide unit 75' is free of holding sections corresponding to the lateral recesses 69', 70' (projecting downwards).

[0083] In the Figures 7a-8b A third command unit 75'' is shown (command unit of third type).

[0084] The third guide unit 75'' is also designed such that it can be mounted on the coupling section 59 in a rotationally fixed manner. The guide unit 75'' has a second bore 76, which in this example is designed as a through bore. The third guide unit 75'' can be fastened to the coupling section 59 via the first bore 72 and the second bore 76 by means of a screw 77 (see figure). Figure 7bIn the example, the first bore 72 and the second bore 76 are each designed as (smooth) through bores. The screw 77, which is designed as a self-tapping screw or has a self-tapping external thread, is inserted through the second bore 76 and screwed into the first bore 72 from the top 67 of the coupling section 59. As it is screwed in, the screw 77 cuts an internal thread into the first bore 72.

[0085] The third guide unit 75'' has a base section 78 in which the second bore 76 is formed. From the base section 78, two guide sections 79 extend away from each other along a first direction or a first extension axis R1, the two guide sections being spaced apart, with the second bore 76 being formed between the two guide sections 79 (see in particular). Figure 7b and Figure 8a). The first extension axis R1 is oriented parallel to the central longitudinal axis of the second bore 76.

[0086] The two guide sections 79 are arranged such that, in the installed state (guide unit 75'' is placed on the coupling section 59), the guide sections 79 are spaced apart from each other along the longitudinal axis 27 of the channel. In this example, the spacing of the guide sections 79 is formed by a cylindrical, in particular circular cylindrical, recess 85. In this example, the central longitudinal axis of the recess 85 and the central longitudinal axis of the second bore 76 are aligned.

[0087] On the underside of the base section 78, a cuboid-shaped material thickening 81 is formed, which is intersected by the second bore 76. Furthermore, a lug 82 corresponding to the groove 55 is provided on the underside (counterpart to the groove 55 on the head section 57). The lug 82 has a cuboid shape and extends laterally from the material thickening 81 in this example. When the guide unit 75'' is placed on the coupling section 59, the lug 82 engages with the groove 55 (see figure). Figure 7b ).

[0088] At the base section 78 of the third guide unit 75'', retaining sections 83 extend along a second direction or a second axis of extension R2 opposite to the first direction R1. These retaining sections are designed such that, when placed on the coupling section 59, they laterally encompass the coupling section 59 or abut the side surfaces 69, 70 of the coupling section 59. The retaining sections 83 are thus designed to fit into the lateral recesses 69', 70' of the coupling section 59. The retaining sections 83 are spaced apart from one another and oriented parallel to each other, so that they define a gap 84 between them that is aligned with the coupling section 59 or, when placed, can accommodate the coupling section 59.

[0089] Figure 9 shows a schematic front view of a door or window arrangement, which is collectively designated with the reference numeral 100.

[0090] The door or window assembly 100 has a fixed frame 102, which includes an optional lower frame cross member 104, an upper frame cross member 106, and two vertical frame members 108, 110. The lower frame cross member 104 is optional and can be omitted if the door or window assembly 100 is designed to be barrier-free (level threshold).

[0091] The door or window assembly 100 in the example also has a fixed panel 112, which is attached to the frame 102 and is immovable relative to the frame 102. The fixed panel 112 can have a glazed segment 114. Instead of the fixed panel 112, a movable sash can be provided (double-leaf elements; not shown). The closing device 10 described above can be used with single-leaf or double-leaf elements.

[0092] The door or window assembly 100 also has a sash 116 that is movable relative to the frame 102 between an open position and a closed position along a sliding direction vr. The sash 116 has a lower sash cross member 118, an upper sash cross member 120, and two vertical sash mullions 122, 124. The sash 116 may have a glazed segment 117.

[0093] Furthermore, the door or window arrangement 100 has a sash-side retraction device 10 and a frame-side release piece 15.

[0094] The retraction device 10 is arranged on the sash 116 and the release piece 15 is arranged on the frame 102, with the retraction device 10 and the release piece 15 facing each other. Depending on the position of the sash 116 relative to the frame 102 along the displacement direction vr, the release piece 15 can be coupled to the retraction device 10.

[0095] In this example, the release piece 15 is arranged and attached to a lower side (facing the sash 116) of the upper frame cross member 106 of the frame 102. The retraction device 10 is arranged and attached to an upper side (facing the frame 102) of the upper sash cross member 120 of the sash 116 (in Figure 9 (arranged at the points shown for illustration).

[0096] The sash 116 can be designed as a sliding sash or, as in the present case, as a lift-and-slide sash. Using the handle 126, the sash 116 can be moved by an operator and locked or unlocked on the frame 102 by pivoting the handle 126 accordingly.

[0097] The release piece 15 has a fastening section 17, which is essentially cuboid in shape and which can have openings at both ends for fastening the release piece 15 to the frame 102 (see figure). Fig-10a,bA release section 19 extends from the fastening section 17 and, in this example, has a circular cross-section. The release element 15 has a substantially T-shaped form.

[0098] The Figures 10a and 10b show the door or window arrangement 100 from Figure 9 in an enlarged and partially cut-away partial view, in which the lift-and-slide sash 116 is in the closed and lowered position ( Figure 10a ) and once in the raised and partially open position ( Figure 10b ).

[0099] In the closed position ( Figure 10a The release piece 15 is coupled to the receiving unit 30, and the receiving unit 30 is moved into the retracted position. Specifically, the release section 19 of the release piece 15 is received in the head section 57 of the receiving unit 30 and gripped by the clamping jaws 50.

[0100] As in Figure 10aAs can be seen, the release piece 15 is attached to a guide rail 128 mounted on the upper frame cross member 106 of the frame 102. The guide unit 75, mounted on the coupling section 59 of the receiving unit 30 (here, the first guide unit 75 described above), projects into the clear cross-section of the guide rail 128. This allows the guide unit 75 to provide guidance and support perpendicular to the plane of the lift-and-slide sash 116.

[0101] In the partially open position ( Figure 10b The receiving unit 30 is in the ready position, with the clamping jaws 50 projecting beyond the clear cross-section of the guide channel 26 and engaging the wall sections 24 from behind with their rear gripping sections 56. The release piece 15 is disengaged from the receiving unit 30.

[0102] The first guide unit 75, mounted on the coupling section 59 of the receiving unit 30, projects further or higher into the guide rail 128 due to the raised lift-and-slide sash 116. This allows the guide unit 75 to provide guidance or support orthogonally to the sash plane of the lift-and-slide sash 116, and relatively close to the front end 130 of the lift-and-slide sash 116 in the closed position.

Claims

1. Retraction device (10) for a door or window arrangement (100) comprising a frame (102) and a movable leaf (116), the retraction device (10) having a housing (12) to which or in which a damper (16) is fastened, the damper (16) having a retractable and extendable piston rod which is coupled at its free end to a receiving unit (30), the housing (12) having a housing portion (20) in which opposing wall portions (24) define a guide channel (26), the receiving unit (30) being movably guided in the guide channel (26) along its longitudinal axis (27), the receiving unit (30) having a head portion (57) comprising a receptacle (54) for a release portion (19) of a release piece (15) and a fastening portion (58) via which the receiving unit (30) is at least indirectly coupled to the piston rod of the damper (16), characterized in that the housing portion (20) has a base (22) from which the wall portions (24) project and which, together with the wall portions (24), defines the guide channel (26), and in that the receiving unit (30) also has a coupling portion (59) that is arranged between the head portion (57) and the fastening portion (58), the coupling portion (59) having a lower height (h) than the head portion (57) and a top surface (67) which faces away from the base (22) and has a smaller distance from the base (22) than a top surface (62) of the head portion (57), the coupling portion (59) having a first bore (72) which extends from the top surface (67), with a guide unit (75) being provided, which is designed such that it can be mounted on the coupling portion (59) in a rotationally fixed manner and has a second bore (76) so that the guide unit (75) can be fastened to the coupling portion (59) via the first bore (72) and the second bore (76) by means of a screw (77).

2. Retraction device (10) according to claim 1, characterized in that the receiving unit (30) on the coupling portion (59) has lateral recesses (69', 70') so that side surfaces (69, 70) of the coupling portion (59) which face the wall portions (24) of the housing portion (20) are each spaced apart from the wall portions (24).

3. Retraction device (10) according to claim 1 or 2, characterized in that the first bore (72) and / or the second bore (76) are each designed as a through bore.

4. Retraction device (10) according to any of the preceding claims, characterized in that a groove (55) is formed at the end of the head portion (57) which faces the coupling portion (59) and in that a nose (82) which corresponds to the groove (55) is formed on the guide unit (75), the nose (82) engaging with the groove (55) when the guide unit (75) is placed on the coupling portion (59).

5. Retraction device (10) according to any of the preceding claims, characterized in that the guide unit (75) has a base portion (78) in which the second bore (76) is formed, with one or more guide portions (79) extending from the base portion (78) in a first direction (R1).

6. Retraction device (10) according to claim 5, characterized in that a guide portion (79), on which a guide roller (81) is rotatably mounted and / or a sliding head (80) is formed, extends from the base portion (78).

7. Retraction device (10) according to claim 6, characterized in that both the guide roller (81) and the sliding head (80) are provided on and arranged side by side on the guide portion (79) in such a way that, when the guide unit (75) is placed onto the coupling portion (59), they are arranged adjacent to one another along or in parallel with the longitudinal axis of the channel (27), the sliding head (80) being designed as a safety head.

8. Retraction device (10) according to any of claims 1 to 5, characterized in that two guide portions (79) extend from the base portion (78) and are spaced apart from one another, with the second bore (76) being formed between the two guide portions (79).

9. Retraction device (10) according to claim 8, characterized in that the guide portions (79) are spaced apart from one another transversely to the longitudinal axis of the channel (27).

10. Retraction device (10) according to claim 8, characterized in that the guide portions (79) are spaced apart from one another along the longitudinal axis of the channel (27).

11. Retraction device (10) according to any of claims 5 to 10, characterized in that holding portions (83) extend along the base portion (78) in a second direction (R2) opposite to the first direction (R1), and are designed in such a way that they laterally encompass the coupling portion (59) when placed on the coupling portion (59).

12. Set comprising a retraction device (10) according to any of the preceding claims and a second guide unit (75') which differs from the guide unit (75).

13. Set according to claim 12, characterized by a third guide unit (75") which differs from the guide unit (75) and the second guide unit (75') and / or by a frame-side release piece (15) for actuating the receiving unit (30).

14. Door or window arrangement (100), comprising a frame (102), a leaf (116) which is movable relative to the frame (102) between an open position and a closed position in a movement direction (vr), a retraction device (10) according to any of claims 1 to 11, and a release piece (15), wherein the retraction device (10) is arranged on the leaf (116) and the release piece (15) is arranged on the frame (102), wherein the retraction device (10) and the release piece (15) face one another.

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