Carriage, carriage assembly and window or door with holding securing means

Abstract

The invention relates to a trolley (20) for moving a window or door (10), in particular a sash (14) of the window or door (10), along a guide rail (18), wherein the trolley (20) has a retaining device (26) comprising at least two parts, which is provided for securing the trolley (20) to the guide rail (18). The retaining device (26) comprises a sliding component (30) having a sliding material, and a support component (28) having a support material that is harder than the sliding material. The sliding component (30) and the support component (28) are preferably arranged section by section so that they are immovable relative to each other; in particular, the sliding component (30) is received section by section in a form-fitting manner within the support component (28), wherein the sliding component (30) is fully encompassed by the support component (28) in at least one circumferential direction.The invention further relates to a trolley arrangement (86) comprising the trolley (20) with the retaining device (26) and the guide rail (18) and the window or door (10) with the trolley arrangement (86).

Description

Background of the invention

[0001] The present invention relates to a trolley for moving a window or door along a track, comprising a trolley body, at least one first roller whose rolling direction runs along the longitudinal axis of the track, and a retaining device for securing the trolley to the track. The invention also relates to a trolley assembly comprising the trolley and the track, and the window or door with the trolley assembly according to the invention.

[0002] Sliding windows or doors typically move on rollers, which, in conjunction with a track, allow for smooth, intuitive movement along a defined path. Obviously, such systems must exhibit a certain robustness against special forces that, while not expected during normal operation, can occur unintentionally in practice. This applies particularly to forces acting perpendicular to the rollers' direction of travel. These include, for example, wind loads or forces resulting from unintentional or deliberate misuse (such as an attempted break-in). It is therefore advisable to incorporate a locking mechanism that prevents one or more rollers from unintentionally jumping off the track and also provides protection against being lifted out during a break-in attempt.In particular, a locking mechanism is necessary for laterally opening sashes of sliding windows or sliding doors, since their components must have a significantly greater mechanical play in the lateral direction compared to linearly guided lift-and-slide systems.

[0003] Furthermore, to provide barrier-free thresholds for sliding windows or sliding doors, a correspondingly compact design of the running track and, if necessary, the retaining device is often required.

[0004] A variety of sliding windows or sliding doors are known from the prior art, which have a roller carriage in conjunction with a retaining device or a separate retaining device. For example, EP 4 058 649 B1 discloses a sliding panel system with a roller carriage and a retaining device, wherein the retaining device engages a running rail on both sides and wherein the retaining device has mutually oriented lugs for engaging the running rail, which are preferably made of plastic.

[0005] US Patent 5,488,803 discloses a retaining device in the form of an insert for a sliding door frame. Two legs of the insert overlap a track on both sides, with the opening between the legs being greater than the maximum width of the track. Optionally, the insert can be fitted with a plastic lip to seal the gap between the insert and the track.

[0006] WO 2013 / 189 749 A1 discloses a sliding sash system which, as a retaining device, has a bottom bolt with an engagement element projecting into a guide profile. A sliding element is arranged on the engagement element to enable low-friction sliding of the retaining device along the walls of the guide profile.

[0007] DE 10 2022 204 890 A1 and DE 10 2022 204 891 A1 each disclose a barrier-free sliding door comprising a roller carriage. Projections are arranged on the respective roller carriage which overlap a running rail in the vertical direction on one or both sides and by means of which the roller carriage can be supported against the walls of a guide groove and / or the flanks of the running rail in the event of a transverse load.

[0008] Furthermore, EP 3 502 399 B1 teaches a lift-and-slide door with a barrier-free threshold, wherein a holding safety device is formed by an engagement element that engages in a guide groove.

[0009] EP 0 278 162 A1 discloses a retaining device for a sliding door, which partially engages in a groove of a track and additionally covers a roller of the sliding door. US 5 671 502, FR 2 601 408 B1 and US 5 927 017 each disclose a trolley with a retaining device, which also engages in a groove of a track.

[0010] US 3 033 285 teaches a trolley arrangement with a retaining device which engages a running rail on one side, while US 3 956 854 and WO 1999 / 32 747 A1 each disclose retaining devices which can be snapped onto a running rail and then engage it on one or both sides.

[0011] US 4,064,592 and US 4,633,615 each disclose a retaining device or a trolley with a retaining device, wherein the respective retaining device is arranged on at least one roller axle and engages or overlaps a running rail on both sides.

[0012] US Patent 5 148 630 A teaches a holding device in which two elements, each engaging a guide rail from one side, are arranged on a sliding sash via a common connecting element.

[0013] US Patent 4,639,970 describes a trolley with a locking mechanism comprising two straight legs arranged against the sides of a running rail, but not engaging underneath it. Additionally, a sliding element is in contact with the top of the running rail. Object of the invention

[0014] The object of the invention is to combine the individual advantages of the various embodiments established in the prior art and, in particular in connection with laterally adjustable sliding windows or sliding doors, to further develop them in such a way as to create a low-wear, structurally simple and therefore manufacturing- and assembly-friendly arrangement on the basis of which a window or door can be reliably secured and moved and / or stabilized on a running rail. Description of the invention

[0015] This problem is solved according to the invention by a trolley of the type mentioned above with a retaining device, wherein the retaining device is formed in at least two parts, comprising a sliding component and a support component, and wherein the sliding component is fully enclosed in one circumferential direction by the support component. The sliding component comprises a sliding material, and the support component comprises a support material that is harder than the sliding material. The support material, in particular, has a higher strength than the sliding material. The sliding component and the support component are preferably arranged to one another exclusively by positive locking, so that they can be easily separated manually from each other after the retaining device has been detached from the trolley body. The material thickness ratio between the sliding component and the support component in the area of ​​the intended main load paths is particularly preferably between 1:1 and 1:4.Upon contact with a (usually metallic) guide rail, the sliding component ensures quiet and low-wear sliding of the retaining device along the rail. The support component reliably transfers the forces that occur. The two-part design of the retaining device offers advantages over a retaining device with, for example, a sprayed-on or vapor-deposited sliding coating. This allows the requirements for each component to be considered separately during its design, enabling optimization of the component accordingly. Furthermore, a worn sliding component can be easily replaced, while the support component can continue to be used. The easy separation of the materials also offers advantages with regard to the system's recyclability.

[0016] The support component and / or the sliding component is / are preferably designed as a single piece.

[0017] The retaining device has at least one projection, preferably two projections, but particularly preferably four projections, which extend away from the carriage body. The projection(s) serve to engage the guide rail and are preferably designed to allow simple attachment of the retaining device to the carriage. The projection(s) comprise both the sliding material and the support material, with the sliding material preferably projecting over at least 80%, and particularly preferably over at least 90%, of the projecting length of the projection.

[0018] To enable a preferred two-sided overlap of the guide rail, at least two projections are positioned opposite each other transversely to the rolling direction of a first roller. In a particularly preferred embodiment of the carriage, the retaining device is designed symmetrically with respect to at least one of its central planes, such that the at least two projections are positioned opposite each other along a direction parallel to the axis of the first roller. However, the invention expressly includes designs in which the projections are offset from each other along the longitudinal axis of the guide rail.

[0019] Preferably, the projection, or at least one of the projections, has a lug at its free end which extends along a direction parallel to the axis of the first roller towards the opposite flank of the guide rail or to the opposite projection. In particular, several or all projections may have such lugs. The lug(s) is / are thus sensibly formed on the sliding component of the retaining device and may, if necessary, engage the guide rail at the corresponding flank.

[0020] In a particularly preferred embodiment of the invention, the projection(s) of the retaining device have at least partially chamfered end surface(s), such that the projection(s) rise in the direction parallel to the axis of the first roller from the respective outer surface of the retaining device towards its center, on the side facing away from the trolley. In particular, the chamfered end surface(s) can be formed primarily on the support component of the retaining device. The chamfered end surface(s) increases the clearance in the spaces laterally of the guide rail. This results in a lower susceptibility of the system to potential malfunctions due to deposits in these areas. Furthermore, it allows for a greater degree of collision-free tilting of the retaining device, and thus of the trolley, about the longitudinal axis of the guide rail.

[0021] Preferably, the retaining device has a through-opening extending towards the trolley body. This through-opening can be used to connect the retaining device to the trolley body. With regard to the assembly of the system and the transfer of the forces occurring, it is particularly advantageous to attach the retaining device to the trolley body via a rivet connection. For this purpose, the trolley body preferably has a mandrel onto which the retaining device can be placed and then riveted, for example, using a wobble riveting process. However, the retaining device can also be attached to the trolley body in other ways, for example, using a screw connection.

[0022] In one embodiment of the invention, the retaining device has a plug connection with the carriage body to prevent rotation relative to a central attachment point of the retaining device, in particular the pin. The plug connection can consist of a system of at least one projection and a recess, which can optionally be formed partially on the support component and / or the sliding component of the retaining device.

[0023] The sliding component of the retaining device is preferably made of plastic to enable low-friction, and therefore quiet and wear-free, sliding along the metallic guide rail. The support component, on the other hand, preferably comprises metal and / or fiber-reinforced plastic to ensure the necessary absorption of the forces that occur. For this purpose, a system in which the sliding component comprises polyoxymethylene (POM), polyamide (PA), and / or polytetrafluoroethylene (PTFE), and the support component can, for example, be made of steel, is particularly suitable.

[0024] With regard to use with a laterally opening window or door, the trolley body preferably comprises a base plate and a push plate, wherein the base plate and the push plate are slidable relative to each other transversely to the direction of travel of the roller. The relative movement between the base plate and the push plate preferably occurs by the components sliding against each other. Alternatively, the relative movement can be enabled by the installation of bearing elements. In any case, the relative movement can be restricted. The relative movement can be controlled, for example, by the operation of a control pin in a control track, which is arranged on one of the plates and which runs at least partially obliquely to the direction of travel of the roller.

[0025] The problem is also solved by a trolley arrangement comprising the trolley with the retaining device and the guide rail. Preferably, several projections of the retaining device overlap the guide rail on both sides, with this overlap occurring without contact in a standard operating condition (i.e., without any special forces). However, it is understood that in an operating condition where special forces occur, the retaining device may at least temporarily contact the guide rail and may slide along it. This operating condition arises from the multitude of loads that occur in practice in combination with the required mechanical clearance. This applies in particular to dynamic loads that can occur, for example, during excessively vigorous operation of the system.Thus, in addition to its function as the ultimate safeguard in the event of unusually strong lateral forces (storm, attempted break-in), the holding device also has the task of being able to intervene in the system, at least temporarily, during everyday operation.

[0026] In one embodiment of the invention, one or more projections can overlap the guide rail only on one side. To nevertheless ensure protection against lateral forces in both directions in this case, for example, an additional roller carriage with a correspondingly rotated retaining device can be provided.

[0027] The guide rail of the trolley assembly preferably has an undercut or a notch on each of its flanks. With the aid of the lug(s) on the projection(s) of the retaining device, the guide rail can be engaged by the retaining device in the event of a corresponding lateral movement between the guide rail and the retaining device. This effectively prevents the retaining device, and thus the trolley, from lifting off the guide rail in the vertical direction. An asymmetrical design of the guide rail, in which the undercut or notch is only present on one of its flanks, is also conceivable.

[0028] In contrast, if the retaining device overlaps the guide rail on both sides, the opening width of the retaining device between the free ends of the projections (or between any lugs of the projections, or between the free end of one projection and the lug of the opposite projection) should preferably be greater than the maximum width of the guide rail in a direction parallel to the axis of the first roller. Thus, if the lug(s) are not engaged with the guide rail due to a transverse movement, contactless insertion and removal between the guide rail and the retaining device is possible, unless otherwise prevented. This offers advantages in system installation while simultaneously minimizing the design effort for the retaining device, as no additional locking or sliding mechanisms are required.

[0029] The problem is also solved by a window or door with a fixed frame, which incorporates the roller carriage arrangement according to the invention. The guide rail is preferably arranged or formed on the fixed frame of the window or door, particularly on the frame's sill, while the roller carriage is arranged or formed on a movable sash of the window or door, the roller carriage being movably mounted on the guide rail to enable the sash to be moved relative to the fixed frame. It is expressly in accordance with the invention that the roller carriage can be in different configurations. For example, the at least one roller of the roller carriage can partially overlap the guide rail, with the roller carriage serving to move the movable sash of the window or door while bearing the load.Furthermore, the roller can, for example, have a predominantly flat running surface, allowing it to float on the track. In conjunction with a suitably designed carriage body, the roller carriage can thus also serve as a stabilizing unit for the window or door.

[0030] Further advantages of the invention will become apparent from the description and the drawing. Likewise, the features mentioned above and those described in more detail below can each be used individually or in any combination according to the invention. The embodiments shown and described are not to be understood as an exhaustive list, but rather serve as examples for illustrating the invention. Brief description of the drawing

[0031] They show: Fig. 1a a section of a window or door in a frontal view with a roller carriage arranged on a sash profile of a sash, the sash being in the sliding position; Fig. 1b the section of the window or door in a frontal view from Fig. 1a, with the wing in the closed position; Fig. 2a an isometric, partially exploded view of the trolley; Fig. 2b another isometric, partially exploded view of the trolley; Fig. 3 an isometric view of a push plate and a retaining device of the trolley; Fig. 4 an isometric exploded view of the retaining device; Fig. 5a a partially cutaway section of a trolley assembly, showing the trolley and a guide rail, in a frontal view; Fig. 5b a partially cutaway section of the trolley assembly in a frontal view, showing an alternative guide rail; Fig. 6a the trolley assembly in a side view; Fig. 6b the trolley assembly made of Fig. 6a in a frontal view; Fig. 6 a cutaway view of the trolley arrangement from Fig. 6b ; Fig. 7a another embodiment of a trolley arrangement in a side view; Fig. 7b the trolley arrangement made of Fig. 7ain a frontal view; Fig. 7 a cutaway view of the trolley arrangement made of Fig. 7b ; Fig. 8a another embodiment of a trolley arrangement in a side view; Fig. 8b the trolley arrangement made of Fig. 8a in a frontal view; Fig. 8 a cutaway view of the trolley arrangement made of Fig. 8b . Detailed description of the invention and drawing

[0032] Fig. 1a shows a section of a window or door 10 in a frontal view. The window or door 10 has a fixed frame. 12 as well as a movable wing 14 on a wing profile 16 Wing 14 is a trolley 20 arranged. The trolley 20 has a trolley body, in particular a multi-part one. 22 as well as a first roller 24 and a locking device 26The sash 14 is shown in a sliding position, allowing the sash 14 to be moved along the rolling direction of the first roller 24. The first roller 24 is mounted on a track. 18 mounted, which is arranged or formed on the fixed frame 12.

[0033] The retaining device 26, which is partially obscured by the first roller 24 in the illustrated view, in turn has a support component 28 and a sliding component embedded in this support component 28 30 The retaining device 26 overlaps the guide rail 18 on both sides. The configuration shown represents a service condition in which no or negligible lateral forces or dynamic loads occur (standard operating condition). In this condition, the retaining device 26 does not touch the guide rail 18.

[0034] Contact between the retaining device 26, in particular the sliding component 30 of the retaining device 26, and the guide rail 18 can occur in the event of increased lateral loading of the sash 14, for example, due to wind loads or incorrect operation (i.e., when special forces occur). Furthermore, due to the necessary clearance between the mechanical components, especially when dynamic loads occur (rapid opening or closing of the sash 14), as well as due to manufacturing and assembly tolerances (the resulting effects are attributed to the special forces), at least temporary contact between the retaining device 26 and the guide rail 18 can occur. In practice, the described circumstances often occur in combination. The interaction of the retaining device 26 with the guide rail 18 effectively prevents the sash 14 from disengaging or the first roller 24 from jumping off the guide rail 18.In the event of contact during movement of the wing 14, the sliding component 30 enables the retaining device 26 to slide along the longitudinal direction of the running rail 18 with minimal noise and wear, while the function of the retaining device 26 remains unchanged.

[0035] Fig. 1b shows the section of window or door 10 from Fig. 1a , where the wing is 14 by the length d (cf.) Fig. 1a ) in a transverse direction (in particular parallel to the axis of the first roller 24) towards the fixed frame 12. The sash 14 is thus in a closed position, partially resting against or engaging with the fixed frame 12. The transverse movement is made possible by the roller carriage 20. A base plate 34 (see Fig. 2bThe carriage body 22 is fixedly mounted on the wing profile 16 of the wing 14, while the other components of the carriage 20 are arranged to be laterally displaceable relative to its base plate 34. In the closed position of the wing 14, the retaining device 26 serves primarily as an anti-burglary element. An attempt to pry open or tilt the wing 14 results in the retaining device 26 engaging the guide rail 18, thereby preventing the attempted break-in.

[0036] Fig. 2a Figure 1 shows an isometric view of the trolley 20, with the retaining device 26 shown separately for clarity. The trolley body 22 includes the base plate 34 and a sliding plate. 36The base plate 34 and the push plate 36 are interlocked section by section, in particular in a dovetail shape, such that relative movement in the rolling direction of the first roller 24 is prevented, while relative movement in the transverse direction, in particular parallel to the axial direction of the first roller 24, is allowed. The transverse movement is effected in particular by the base plate 34 sliding on the push plate 36 and is stopped by an end stop. 96 (see Fig. 6c ) on the base plate 34 and by two locking elements 33, 35, especially during the assembly of the trolley 20, limited. The first roller 24 and a second roller 32 are rotatable between two mounting plates 40, 42arranged, wherein the mounting plates 40, 42 are in turn arranged on the push plate 36. Preferably, the mounting plates 40, 42 are also arranged rotatably on the push plate 36, so that the rollers 24, 32 can perform a common rocking motion about the axis of attachment to the push plate 36. The resulting mechanical play allows the wing 14 to be moved via the rollers 24, 32 even in the event of any assembly or manufacturing inaccuracies and / or contamination of the track 18 (see Fig. 1a ) or the rollers 24, 32. The rocking motion is limited by the contact of the mounting plates 40, 42 with the push plate 36.

[0037] The sliding plate 36 has a control cam on its side facing the base plate 34. 38the track, which runs at least partially obliquely to the direction of travel of at least one of the rollers 24, 32. By engaging a control pin (not shown here) in the control cam 38 and moving the control pin along the direction of travel of at least one of the rollers 24, 32 (for example by means of a connecting rod not shown here), a transverse movement of the push plate 36 relative to the base plate 34 is thus caused.

[0038] The retaining device 26 has the support component 28, which comprises the sliding component 30. In the illustrated embodiment, the sliding component 30 has two connectors on its side facing the carriage body 22. 46, 48 on, which are used to create a plug connection 44 (see Fig. 3 ) with the push plate 36 of the carriage body 22. Furthermore, the retaining device 26 has a through-opening in its center. 56aon, which can be used for fastening, in particular riveting, to the push plate 36 of the carriage body 22.

[0039] Fig. 2b shows another isometric view of the trolley 20, with the trolley 20 compared to the view in Fig. 2a The retaining device 26 is shown rotated. It is still shown separated from the carriage body 22. A pin 54 The retaining clip 26 is provided on the push plate 36, and in particular designed as such. The retaining clip 26 can be slid onto the mandrel 54 via its through-opening 56a and subsequently fastened to it using a riveting method (e.g., radial rivets). The connectors 46, 48 (see Fig. 2a ) the sliding component 30 engage in the connector receptacles 50, 52 on the push plate 36 and prevent the retaining device 26 from twisting relative to the pin 54.

[0040] Fig. 3shows an isometric view of the push plate 36 and the retaining device 26. The retaining device 26 is shown on the pin 54 (see Fig. 2b The push plate 36 is slid onto the push plate and the plug connection 44 is made using the plug connectors 46, 48 and the connector receptacles 50, 52 (plug connector 48 and connector receptacle 52 not visible here). The retaining clip 26 has four projections. 58, 60, 62 and 64 which extend away from the thrust plate 36. Each of the projections 58, 60, 62 and 64 preferably has a nose. 74, 76, 78 and 80 on, wherein the noses 74, 76, 78, 80 each point in a direction parallel to the axis of the first roller 24 (see Fig. 2a ) project towards the center of the retaining device 26. The end surfaces 66, 68, 70 and 72The respective projections 58, 60, 62, 64 are at least partially chamfered in such a way that the projections 58, 60, 62, 64 rise from the respective outside of the retaining device 26 towards the noses 74, 76, 78, 80.

[0041] Fig. 4 Figure 1 shows an isometric exploded view of the retaining clip 26. The sliding component 30 has a through-opening. 56b on, into which the central part of the support component 28, which in turn has the through-opening 56a, can be integrated. The projections 58, 60, 62, 64 (see Fig. 3 ) can each be subdivided into two parts. Thus, the sliding component 30 has the projections 58b, 60b, 62b and 64b on, while the support component 28 the projections 58a, 60a (not visible here), 62a and 64aThe lugs 74, 76 (not visible here), 78, 80 are formed on the respective projections 58b, 60b, 62b, 64b of the sliding component 30. In the assembled state, the projections 58b, 60b, 62b, 64b are in turn supported by the projections 58a, 60a (not visible here), 62a, 64a of the support component 28 towards the outer sides of the retaining device 26. The figure further shows that, in the illustrated embodiment, after the sliding component 30 and the support component 28 are assembled, the sliding component 30 is completely enclosed by the support component 28, with the sliding component 30 being partially received in the support component 28. Furthermore, after assembly and attachment to the carriage body 22 (see Fig. 2a ) arranged section by section, immovably relative to each other.

[0042] Fig. 5ashows a partially cut-out section of a trolley arrangement 86, which includes the trolley 20 and the guide rail 18, in a frontal view. The mounting plates 40, 42 are shown in section. Behind the retaining device 26, which includes the support component 28 and the sliding component 30, the second roller 32 is visible. The guide rail 18 has an undercut on each of its flanks. 82, 84 The undercut 82 serves to engage behind the noses 74, 76 (see Fig. 3 ) and the undercut 84 serves to engage behind the noses 78, 80 (see Fig. 3 ), in each case of a relative movement between the retaining device 26 and the guide rail 18 in the transverse direction. This includes both translational movements in the transverse direction and tilting movements of the retaining device 26 about the guide rail 18.

[0043] The chamfered end faces 66, 68 (see Fig. 3 ), 70, 72 (see Fig. 3) create an increase in the free space in the grooves 88, 90, which are located laterally to the running rail 18. This results in greater robustness of the system, especially in the event of tilting movements of the retaining device 26 around the running rail 18 and / or if deposits should accumulate in the grooves 88, 90.

[0044] Fig. 5b shows analogous to Fig. 5a A partially cut-away section of the trolley assembly 86 in a frontal view, wherein the guide rail 18 is shown in a further embodiment. The guide rail 18, in contrast to the illustration in Fig. 5a one notch each 92, 94 on their flanks. The notch 92 serves to engage behind the noses 74, 76 (see Fig. 3 ) and the notch 94 serves to engage behind the lugs 78, 80 (see Fig. 3), in each case of a relative movement between the retaining device 26 and the guide rail 18 in the transverse direction. This includes both translational movements in the transverse direction and tilting movements of the retaining device 26 about the guide rail 18. The lugs 74, 76 (see Fig. 3 ), 78, 80 (see Fig. 3 ) protrude by the length in the illustrated embodiments b towards the running rail 18. The length b is preferably in the range of 0.2 mm to 1 mm, in particular it is preferably in the range of 0.3 mm to 0.5 mm.

[0045] Fig. 6a Figure 1 shows the trolley assembly 86, which includes the guide rail 18 and the trolley 20, in a side view. The retaining device 26 is arranged between the rollers 24, 32 on the push plate 36 of the trolley body 22. The rollers 24, 32 are secured by means of the mounting plates 40, 42 (see Figure 1). Fig. 2a) also arranged on the sliding plate 36. The base plate 34 is partially engaged with the sliding plate 36 and can slide relative to it perpendicular to the plane of representation to a limited extent.

[0046] Fig. 6b The trolley arrangement 86 shows Fig. 6a in a frontal view. The representation in Fig. 6b can also be derived from the overall view of the Fig. 1a and 5a can be derived and is shown separately here for illustrative purposes only. In the illustrated embodiment, the guide rail 18 is supported by the first roller 24 and the second roller 32 (see Fig. 6a ) partially overlapped, with the retaining device 26 overlapping the running rail 18 significantly further.

[0047] Fig. 6c shows a cutaway view of the trolley arrangement 86 from Fig. 6bThe section in the plane of representation passes through the center of the retaining device 26. The end stop 96, formed on the base plate 34, and the control cam 38 in the sliding plate 36 are visible. The retaining device 26 is arranged on the pin 54 formed on the sliding plate 36.

[0048] Fig. 7a Figure 1 shows a further embodiment of a trolley arrangement 86, comprising a trolley 20 with a retaining device 26 and a guide rail 18. The basic structure and function of the illustrated embodiment correspond to the trolley arrangement 86 shown in the preceding figures. Essentially, the embodiment shown here has a modified dimension for supporting larger loads and a height adjustment feature. Furthermore, the trolley 20 has a brush on each side. 98, 99to prevent a reduction in the running ability of the trolley 20 due to deposits on the running rail 18.

[0049] Fig. 7b shows the trolley arrangement 86, comprising the trolley 20 with the retaining device 26 and the running rail 18 made of Fig. 7a in a frontal view. The brush 98 is placed over the guide rail 18 on both sides and is in contact with the guide rail 18.

[0050] Fig. 7c shows a cutaway view of the trolley arrangement 86 from Fig. 7b , whereby the cut is analogous to Fig. 6c in the plane of representation passes through the center of a retaining clip 26. In the depicted state, the retaining clip 26 is in turn arranged on a pin 54.

[0051] Fig. 8aFigure 1 shows a further embodiment of a trolley arrangement 86, comprising a trolley 20 with a retaining device 26 and a guide rail 18. In contrast to the previously described variants of the trolley arrangement 86, this variant has a first guide roller 24 with a flat running surface and a second guide roller 32 with a flat running surface, wherein the guide rollers 24, 32 do not overlap the guide rail 18 (see also Fig. 8b Furthermore, a sliding plate 36 has a multi-part structure, as explained below. In the illustrated embodiment, the roller carriage 20 does not serve to bear the load; rather, it has a stabilizing function. In practice, it is therefore advisable to consider the design of the window or door 10 (see Fig. 1a ) to provide the illustrated design variant in combination with another design variant.

[0052] Fig. 8bshows the trolley arrangement 86, comprising the trolley 20 with the retaining device 26 and the running rail 18 made of Fig. 8a in a frontal view. The first roller 24 is arranged on the guide rail 18, but does not overlap it.

[0053] Fig. 8c shows a cutaway view of the trolley arrangement 86 from Fig. 8b , whereby the cut is analogous to the Fig. 6c and 7c in the plane of representation runs through the center of the retaining clip 26. The retaining clip 26 is in turn arranged on a pin 54. In the illustrated embodiment, the push plate 36 has an upper part 36a and a lower part 36b on, wherein the two parts 36a, 36b are arranged to be movable relative to each other in the vertical direction. A spring 37is arranged between the upper part 36a and the lower part 36b. The lower part 36b of the push plate 36, on which the rollers 24, 32 (see figure) are mounted, is actuated by the spring load exerted by the spring 37. Fig. 8a ) are arranged using mounting plates 40, 42, pressed against the running rail 18.

[0054] In summary, the invention relates to a roller carriage 20 for moving a window or door 10, in particular a sash 14 of the window or door 10, along a guide rail 18, wherein the roller carriage 20 has a retaining device 26 comprising at least two parts, which is provided for securing the roller carriage 20 to the guide rail 18. The retaining device 26 has a sliding component 30, comprising a sliding material, and a support component 28, comprising a support material that is harder than the sliding material. The sliding component 30 and the support component 28 are preferably arranged section by section so that they are immovable relative to each other; in particular, the sliding component 30 is received section by section in a form-fitting manner within the support component 28, wherein the sliding component 30 is fully encompassed by the support component 28 in at least one circumferential direction.The invention further relates to a trolley arrangement 86, which comprises the trolley 20 with the retaining device 26 and the running rail 18, and the window or door 10 with the trolley arrangement 86. Reference symbol list

[0055] 10 Window or door 12 Frame 14 Sash 16 Sash profile 18 Running rail 20 Roller carriage 22 Carriage body 24 First roller 26 Retaining device 28 Support component 30 Sliding component 32 Second roller 33 Locking element 34 Base plate 35 Locking element 36 Slide plate 36a Slide plate upper part 36b Slide plate lower part 37 Spring 38 Control cam 40 Mounting plate 42 Mounting plate 44 Plug connection 46 Plug connector 48 Plug connector 50 Plug connector receptacle 52 Plug connector receptacle 54 Spindle 56a Through opening 56b Through opening sliding component 58 Projection 58a Projection support component 58b Projection sliding component 60 Projection 60a Projection support component 60b Projection sliding component 62 Projection 62a Projection support component 62b Projection Sliding Component 64 Projection 64a Projection Support Component 64b Projection Sliding Component 66 End Face 68 End Face 70 End Face 72 End Face 74 Nose 76 Nose 78 Nose 80 Nose 82 Undercut 84 Undercut 86 Carriage Arrangement 88 Side Groove 90 Side Groove 92 Notch 94 Notch96 End stop 98 Brush 99 Brush

Claims

1. Trolley (20) for moving a window or door (10) on a guide rail (18), comprising a trolley body (22), a first roller (24) whose rolling direction runs along the longitudinal axis of the guide rail (18), and a retaining device (26) for securing the trolley (20) to the guide rail (18), characterized by the fact that The retaining device (26) is formed in at least two parts, comprising a sliding component (30) of a sliding material and a support component (28) of a support material which is harder than the sliding material, and wherein the sliding component (30) is fully enclosed in a circumferential direction by the support component (28).

2. Trolley (20) according to claim 1, wherein the retaining device (26) has at least one projection (58, 60, 62, 64) which extends away from the trolley body (22).

3. Trolley (20) according to claim 2, wherein the retaining device (26) has at least two projections (58, 60, 62, 64) which are opposite each other transversely to the direction of travel of the first roller (24).

4. Trolley (20) according to claim 2 or 3, wherein the projection (58, 60, 62, 64) or at least one of the projections (58, 60, 62, 64) has a nose (74, 76, 78, 80) at its free end, which projects along a direction parallel to the axis of the first roller (24) towards the center of the trolley body (22).

5. Trolley (20) according to one of the preceding claims, wherein the projection (58, 60, 62, 64) or at least one of the projections (58, 60, 62, 64) has an at least partially chamfered end surface (66, 68, 70, 72) such that the projection (58, 60, 62, 64) rises in a direction parallel to the axis of the first roller (24) from the outside of the trolley body (22) towards its center, to the side facing away from the trolley body (22).

6. Trolley (20) according to one of the preceding claims, wherein the retaining device (26) has a through opening (56a) extending towards the trolley body (22), which can be used to connect the retaining device (26) to the trolley body (22).

7. Trolley (20) according to one of the preceding claims, wherein the trolley body (22) has a pin (54) and wherein the retaining device (26) is placed on the pin (54) and riveted to it.

8. Trolley (20) according to one of the preceding claims, wherein the retaining device (26) is secured against rotation on the trolley body (22) by a plug connection (44).

9. Trolley (20) according to one of the preceding claims, wherein the sliding component (30) comprises plastic and the support component (28) comprises metal and / or fiber-reinforced plastic.

10. Trolley (20) according to claim 9, wherein the sliding component (30) comprises polyoxymethylene (POM), polyamide (PA) and / or polytetrafluoroethylene (PTFE) and / or the support component (28) comprises steel.

11. Trolley (20) according to one of the preceding claims, wherein the trolley body (22) has a base plate (34) and a push plate (36), wherein the base plate (34) and the push plate (36) are displaceable relative to each other transversely to the direction of travel of the first roller (24).

12. Trolley arrangement (86) comprising the trolley (20) according to claim 1 in conjunction with claim 2 or claim 3 and the guide rail (18), wherein the projection (58, 60, 62, 64) or at least one of the projections (58, 60, 62, 64) of the retaining device (26) overlaps the guide rail (18) and wherein the overlapping occurs without contact in an unloaded state.

13. Trolley arrangement (86) according to claim 12 in conjunction with claim 4, wherein the guide rail (18) has an undercut (82, 84) or a notch (92, 94) on at least one of its flanks for engaging behind the nose(s) (74, 76, 78, 80) of the retaining device (26) in the event of a transverse movement between the guide rail (18) and the retaining device (26).

14. Roller carriage arrangement (86) according to one of claims 12 or 13, wherein at least two projections (58, 60, 62, 64) overlap the guide rail on both sides, the opening width between the extremities of the projections (58, 60, 62, 64), or, if present, the opening width between the noses (74, 76, 78, 80) of the projections (58, 60, 62, 64), or the opening width between the nose (74, 76, 78, 80) of one projection (58, 60, 62, 64) and the extremity of the other projection (58, 60, 62, 64) in a direction parallel to the axis of the first roller (24) is greater than the maximum width of the guide rail (18) in order to allow contactless insertion and removal between the retaining device in the vertical direction. (26) and running rail (18) to enable.

15. Window or door (10) with a fixed frame (12) and a movable sash (14) and a roller carriage arrangement (86) according to one of claims 12-14, wherein the guide rail (18) is arranged or formed on the fixed frame (12) and the roller carriage (20) is arranged or formed on the sash (14), and wherein the roller carriage (20) is arranged to be movable on the guide rail (18) in order to be able to move the sash (14) relative to the fixed frame (12).

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