ES2697906T3 - Roller guide for sliding doors of motor vehicles - Google Patents

Abstract

Device for guiding a sliding door (6) of a motor vehicle, device comprising a support (7) for supporting the sliding door (6), and a frame (8), which may be connected to the chassis of the motor vehicle, to receive the support (7), where the support (7) has a set of rollers (9) for the linear roller guide of the support (7) along a guide direction (10) in the frame (8) , characterized in that the roller assembly (9) has a roller guide for sliding doors, with two roller slides (1) arranged at an angle to each other, because the support (7) fits into the frame (8) in such a way that in each case, a cavity is created to accommodate the two roller slides (1), where the cavity extends in the direction of guidance (10), because each of the roller slides (1) presents a plurality of roller bodies (2) arranged essentially parallel relative to a respective bearing axis and an elongated and flat roller cage (3) for accommodating the plurality of roller bodies (2), and in that the roller bodies (2) each have a peripheral cover surface (4) for rolling thereon.

Description

DESCRIPTION

Roller guide for sliding doors of motor vehicles

[0001] The invention relates to a device for guiding a sliding door of a motor vehicle according to the preamble of claim 1, as well as to a motor vehicle with such a device.

[0002] In the state of the art, sliding door devices with sliding doors are known, where they can, for example, be embodied as pivoting sliding doors, as is usually the case with vehicles for public passenger transport. Thus, document DE 2020576 discloses such a pivoting sliding door device for a vehicle, where the oscillation of the door is produced by means of parallelogram guides and the movement is carried out by means of a telescopic guide above the opening of the door. the door.

[0003] In the sector of passenger cars or commercial vehicles and multi-purpose vehicles, sliding door devices known in the art also exist in which the sliding door can be moved between a closed position and an open position by means of appropriate guides of Sliding door. In the closed position of the sliding door, its location in such vehicles is aligned with the rest of the vehicle body, similar to conventional doors or pivoting doors of the vehicle.

[0004] Therefore, the process of opening and closing said sliding door frequently comprises, firstly, an outward or inward movement, through which the sliding door leaves the corresponding sliding door opening, in particular substantially perpendicular to the opening surface of the sliding door opening. Only after the sliding door has been sufficiently released from the rest of the body of the vehicle by this movement, can the sliding movement in the strictest sense be substantially produced, which substantially comprises a displacement parallel to this surface of the vehicle. opening.

[0005] Conventionally, three rails are installed for the displacement between the open position and the closed position, where respectively an upper rail and a lower rail are provided in the door opening. Also, a central guide rail arranged relative to its height between the upper and lower rails is installed on the outer surface of the side wall to guide the door along the outer surface of the side wall. The electrification of the door through a motor is often implemented in this central rail.

[0006] However, the arrangement of such a central rail is inconvenient for various reasons. First, it involves a significant deterioration in the appearance of the vehicle. In addition, when exposed to weather conditions, it must be manufactured with higher quality materials to provide the necessary strength, which increases the production price of the vehicle.

[0007] In US 6,926,34,282, known from the prior art, it proposes on this occasion a mechanism for the side sliding door of a passenger car that does not require such a central rail. In particular, rails are provided in the upper and lower parts of the sliding door, to form a sliding bearing with a sliding body. The sliding bodies, on the other hand, are connected to the rest of the vehicle through a respective pivoting arm. The outward and inward movement discussed above is carried out by a pivoting movement of the pivoting arm. Only after completing this process, the mechanism releases the sliding body for the sliding movement in the rail.

[0008] A drawback of this technology of the state of the art is that the pivoting arms are not only subjected to a considerable bending force, but also to torsion. This load is greater the more compact the arrangement of the pivoting arms, or the fewer pivoting arms are provided, and, in the same way, the greater the further the sliding door can move in its sliding movement. The geometry of the pivoting arms is extremely adverse for the accommodation of these loads. It is also unfavorable in this state-of-the-art technology that, by providing two completely different movements for opening or closing the sliding door (namely, on the one hand, the pivoting of the pivoting arms and, on the other hand, the pivoting of the pivoting arms). , the slide along the rail), a motorized opening or closing of this type can not be implemented at all, or only with excessive complexity in this approach.

[0009] Utility model DE 91 06 544 U1 describes a device for braking a sliding door guided on at least one rail, where a slope arranged at an acute angle with respect to the longitudinal axis of the rail is provided, and a loaded roller with spring displaceable transverse to the longitudinal axis of the rail, which rolls up to the slope as the sliding door approaches the final opening position. In WO 2015/044357 A1 a device according to the preamble of claim 1 is described. According to this state of the art technology, the object of the invention is, therefore, to provide an approach for the guide a sliding door of a vehicle without a central rail, which offers an improved accommodation of the resulting mechanical loads.

[0010] According to the invention, this object is achieved by means of a device for guiding a sliding door of a motor vehicle according to independent claim 1. Advantageous developments of the roller guide following the subsidiary claims up to claim 11. Finally, the object with respect to a motor vehicle is achieved by means of a motor vehicle according to claim 12.

[0011] The device of the invention for guiding a sliding door of a motor vehicle comprises a support for holding the sliding door, and a frame that can be connected to the chassis of the motor vehicle to receive the support. Therefore, the support is coupled to the sliding door in any way by which it at least partially absorbs the weight of the sliding door. As a result of being connected to the frame, the weight of the sliding door accommodated at least partially by the support is preferably transferred to the chassis of the motor vehicle at least partly, and preferably completely, through the frame. Preferably, this transfer takes place almost completely through the roller assembly, and in particular through the roller guides. In the device of the invention for guiding a sliding door of a motor vehicle, the support also has a set of rollers for linear guidance of the support rollers along a guide direction in the frame. The roller assembly has a roller guide for sliding doors with two roller slides arranged at an angle with respect to each other. In this document, an angular provision implies any provision that deviates from a parallel provision. Said non-parallel nature is also called twisted or crisscrossed. Said angular arrangement is especially advantageous for absorbing forces in various directions. In particular, the capacity of such forces in different directions and with a different distribution is really advantageous, since the motor vehicle will not always be in a plane without gradient when the sliding door is opened, but, rather, can be found in a considerably inclined position. According to the invention, it is further disclosed that the roller slides each have a plurality of roller bodies disposed substantially in parallel with respect to a respective rolling axis, and a flat, elongated roller cage for housing the plurality of rollers. Roller bodies. Therefore, there are a plurality of roller bodies for each roller slide, where the roller bodies are arranged in such a way that the respective axes around which they perform their rolling movement circulate parallel to each other. The roll cage is elongated and, therefore, has a longitudinal extension along a longitudinal direction that extends its extension along any direction transverse to this longitudinal direction. Furthermore, the roller cage is flat in that it has a flat outer surface extending along this longitudinal direction. This elongated configuration of the roller cage increases the length of the displacement along which the roller cage can serve to provide rolling guidance.

[0012] The roller bodies each have a peripheral cover surface along which they roll. In this sense, a linear guide is provided which, as a bearing guide, has a low friction and is also equipped to transfer large forces in various directions from the support, which has a fundamental support function for the sliding door, to the frame. The direction of guidance indicated above is that direction defined by the linear bearing guide of the set of rollers in the frame. This guide direction corresponds, preferably, to a transverse direction of the motor vehicle. This guide direction may also correspond to the longitudinal direction indicated above of the roller cage. This transverse direction of the motor vehicle implies that direction which is perpendicular both to the longitudinal direction of the motor vehicle (corresponding to the direction of travel of the motor vehicle) and to the height direction of the motor vehicle. This height direction of the motor vehicle corresponds to the vertical direction with the assumed position of the motor vehicle on a level plane without gradient.

[0013] A preferred development of this embodiment provides that the roller cage has open openings, through which the respective cover surfaces of the roller bodies protrude at least partially. According to a preferred variant, these openings can be designed on both sides so that the roller slides can perform a rotary movement on the two corresponding sides of the roller cage. This again increases the length of the roller guide displacement, since a relative movement of the roller cage relative to the respective counter face on both sides of the roller cage is allowed. In a preferred embodiment of the device, the roller bodies are essentially circular cylindrical in shape, where the roller cage has an essentially rectangular cross section, and where the openings are located on a longer side of the rectangular cross section. Accordingly, the roller slide is configured to roll on its outer surface, ie on its corresponding outer surfaces, which correspond to said longer side of the rectangular cross section. This embodiment facilitates the accommodation of various mechanical stresses by the roller slides.

[0014] According to a preferred embodiment of the device, the roller slides are arranged at an angle of at least 60 ° and a maximum of 120 ° to each other. In this range of angles, the forces in the corresponding plane from virtually any direction can be absorbed by the roller guide. There is a variant in which the roller slides are arranged at an angle of substantially 90 ° to each other which has proved to be especially advantageous. In a preferred embodiment of the device, the sliding door is coupled to the support in such a way that it can be displaced along a direction of travel, this direction of displacement being essentially perpendicular to the direction of guidance. This direction of travel can correspond, in particular, to the exposed longitudinal direction previously of the motor vehicle. In this respect, the displacement movement of the side door is advantageously allowed without a displacement of the support corresponding to its extension.

[0015] Another preferred embodiment of the device facilitates the application of a normal force of the roller guide in a plane defined by the direction of travel and by a height direction of the motor vehicle. In this sense, an especially good adaptation for the transfer of forces acting as a result of the sliding door is ensured. The height direction is defined by the vertical direction described above. Here, the direction of the normal force is perpendicular to the bearing plane on which at least one roller slide of the roller guide runs in the course of the linear roller guide. Since the proposed roller guide has two roller slides arranged at an angle to each other, there are usually also two rolling planes, therefore, there can be at least two possible directions of this normal force per guide. of rollers. A preferred embodiment allows the set of angles bisectors, defined by the roller slide assembly of the roller guide with respect to each other, to be essentially in a plane encompassed by the guide direction and the direction of travel. displacement. As proposed, the roller slides of a roller guide are arranged at an angle to each other. When the roller slides are elongated, this fact not only results in an angle bisector (which is half line), but also a complete assembly, in which the angle bisectors are offset from each other in the longitudinal direction. The fact that this set of angle bisectors is essentially in the same plane means that an advantageous distribution of the accommodated forces on both roller guides of the roller guide has been achieved.

[0016] Preferably, arrangements are made for the device to have a positioning component, a fixed component and an adjustment device, in particular, for the indefinitely variable adjustment of the positioning component with respect to the fixed component, in such a way that You can adjust a gap size between the support and the frame by adjusting. The positioning component can comprise the support and the fixed component of the frame, or vice versa, the positioning component can comprise the frame and the fixed component of the support. In this sense, the roller assembly, which serves to guide the support in the frame and, therefore, is integrated between the two parts of the frame, can be adjusted without play. In contrast to the sets with roller slides that are not angled, the proposed roller guide is particularly suitable for this adaptation. This possibility of adaptation reduces the manufacturing costs of the support, the frame and the roller assembly, since it allows a more generous tolerance in production, which can be compensated, as necessary, by this possibility of adaptation.

[0017] Starting from this fact, it is especially preferable that arrangements are made so that the fixed component is a first part of the marl that is rigidly connected to the chassis, and so that the positioning component is a second part of the frame that is adjustable in the direction of travel and opposite to the first part in relation to the direction of travel. Said arrangement allows the size of the gap between the support and the first part of the frame, as well as the size of the gap between the support and the second part of the frame, to be adjusted by adapting the second part of the frame.

[0018] The adjustment device set forth above preferably comprises an eccentric which allows an adjustment of the second part of the frame by rotating the eccentric and, therefore, a precise adjustment of the distance between the first and second parts of the frame.

[0019] Another preferred embodiment of the device contemplates that the device has a sliding assembly mounted on the support in such a way that it can be moved along the direction of travel, this sliding assembly being coupled to the sliding door for moving the sliding door, and that the device has a sliding-support motor for adjusting the support in the direction of guidance and for adjusting the sliding assembly in the direction of travel in such a way that the sliding door also fits in the direction of displacement. In the present document, the guidance direction and the direction of travel are defined as described above. Therefore, the sliding-support motor drives both the support for a movement in the guidance direction and the sliding assembly in the direction of travel, so that one and the same motor can be advantageously used for both movements outwards. and into the sliding door (indirectly through the support) with respect to the opening of the door, and also for the sliding movement of the sliding door (indirectly through the sliding assembly) along a longitudinal direction of the motor vehicle.

[0020] By means of a preferred embodiment of the device, an advantageous transformation of the combined movement of the support, on the one hand, and the slide assembly, on the other hand, as described above, is allowed, which contemplates that the motor supports The drawer comprises a tongue engaged in the slide assembly and / or the support, a guide rail for guiding the tongue around curves, and a motor for adjusting the tongue in the guide rail. Here especially, the tongue can be coupled to both the slide assembly and the support. Therefore, the guide rail has a curvilinear profile, such that an adjustment or movement of the tongue in the guide rail and, consequently, along the curvilinear profile involves both a movement of the tongue in the guide direction as a movement of the tongue in the direction of movement. The movements of the tongue in these two respective directions therefore result in corresponding adjustments of the support or the sliding assembly and, consequently, of the sliding door in the respective address. Due to the special configuration of the curved profile of the guide rail, the sequence of movement of the sliding door can be determined in relation to its movement in the direction of guidance and in the direction of travel. It is not necessary to move abruptly from the movement inwards or outwards to the sliding movement, and vice versa.

[0021] According to a preferred embodiment of the device, it is contemplated that the slide assembly has a gear mechanism of the slide in order to translate a first adjustment movement of the slide assembly in the direction of travel towards a second adjustment movement of the sliding door in the direction of travel, and that the second adjustment movement is greater than the first adjustment movement. The first or second adjustment displacement refers to the distance covered by the sliding assembly or the sliding door with respect to the absolute point at the beginning of the movement. Therefore, the second adjustment movement is greater than the first adjustment movement if the adjustment of the sliding assembly in the direction of movement generates a relative movement between the sliding door and the sliding assembly, which takes place in the direction of travel. displacement and directed in the same way as the adjustment of the slide assembly. By superimposing this relative movement with the adjustment of the slide assembly, the largest sliding adjustment of the sliding door is achieved.

[0022] A preferred configuration of the device for achieving this greater second adjustment movement contemplates that the slide assembly has a first slide that is coupled to the tongue, and a second slide coupled to the sliding door, and that the gear mechanism of the slide may have a toothed wheel mounted in rotation on the first slide, together with a first rack which is fixed in relation to the first slide, which meshes with the toothed wheel. The gear mechanism of the slide can also have a second rack rigidly connected to the second slide, which also meshes with the gear wheel. Therefore, an adjustment of the first slide with the sprocket causes a rotation of the sprocket (also adjusted with the first sprocket) which, in turn, generates a movement of the second sprocket in relation to the sprocket and, for So, with the first slide. By providing more than one gear in a gear mechanism, a desired gear ratio can also be specified here. Another preferred embodiment contemplates that the motor is equipped to exert a force to adjust the tongue on the tongue essentially in the only direction of travel. This fact is advantageous because, with the longest possible displacement that is desired for the sliding door in the direction of travel, the gear ratio required for this purpose can be selected in a particularly suitable manner, exerting the greatest possible force on the tongue in this direction of travel. If the force is applied in a different direction, only transmission relations that result in a shorter displacement would be possible.

[0023] A preferred embodiment of the device contemplates that the roller assembly has two roller guides opposite each other in relation to the direction of travel. Since each roller guide has at least two roller slides arranged at an angle to each other, at least four roller slides are provided for the device. In this regard, an advantageous absorption of force can be ensured on both sides of the support.

[0024] Finally, a preferred embodiment of the device contemplates that the roller slides are mounted in such a way that they can be moved along the guide direction between the support and the frame, in such a way that a movement of the Support along the guide direction results in a relative movement between both the roller slides and the support, and between the roller slides and the frame. In this sense, a possible longer adjustment displacement is achieved for the linear roller guide formed by the roller assembly.

[0025] The motor vehicle according to the invention has a device according to claims 1-11, together with a sliding door guided by the device, a door opening that can be closed by means of the sliding door, and a set of upper guide arranged above the door opening in order to support the sliding door, in such a way that the weight of the sliding door is absorbed practically completely by the upper guide assembly and the roller assembly. The almost complete absorption of the weight of the sliding door by the roller assembly of the device according to the invention, on the one hand, and by the upper guide assembly, on the other hand, and, furthermore, the possibility of providing an engine for all the desired types of movement of the sliding door in the device according to the invention, derives in that the fact of providing another and, therefore, a third guide rail is unnecessary, where it ensures that the safe absorption of mechanical loads take place potentially at the same time.

[0026] Following the following description and representation, other advantages, special features and convenient developments are derived based on the illustrations of only one embodiment example. In the figures:

Figure 1 shows a roller guide in an exploded view,

Figure 2 shows the roller guide of figure 1 in a cross-sectional view,

Figure 3 shows a single roller slide of the roller guide of figure 1 in a perspective view,

Figure 4 shows a device of the invention for guiding a sliding door of a motor vehicle in a first perspective view and

Figures 5a-c show a linear guided movement of the support in the device of the invention in order to guide a sliding door of a motor vehicle of figure 4.

[0027] Figure 1 shows a roller guide for sliding doors, which are not shown in Figure 1. The roller guide has two roller slides 1, which are arranged at an angle to each other. Specifically, in this document, this angle is essentially 90 °. Furthermore, in figure 1 a first part of the frame 8 is shown, said first part being rigidly connected to the chassis, and forming a fixed component 13. Next, the corresponding positioning component 14 is described with reference to figure 2 In Figure 1, only a first counterpart 7a of the support 7 is shown; this fits into the first part of the frame, such that, in each case, a cavity is formed to accommodate the two roller slides 1. This cavity extends in the guide direction 10, in which the frame 8, the roller slides 1 and the support 7 are mounted in such a way that they can be displaced with respect to each other. The guide direction 10 is, at the same time, the longitudinal direction of the elongated design of the roller slide 1.

[0028] Figure 2 shows the roller guide of figure 1, as well as another roller guide, which is also arranged on the support 7, in such a way that the support 7 with the roller guides is enclosed by the frame 8. In Figure 2, the second opposite part of the frame 8 can be seen, in addition to the first part described above. The second part of the frame can be moved in a direction of displacement 11 by means of an adjustment device, not shown, and thus forms the positioning component 14 relative to the fixed component 13 formed by the first part of the frame. Alternatively, an adjustment device could be contemplated for adjusting the hole sizes between the support 7 and the frame by an extension of the support 7 in the direction of travel with, at the same time, a first frame part and a second part of fixed frames. The roller guides arranged on both sides with their respective two roller slides 1 together form a set of rollers 9, which provides linear roller guidance of the support 7 along the guide direction 10. The cross section can be observed essentially rectangular of the roller cage 3 and the angular arrangement of the roller slides 1, one with respect to the other, at an angle of essentially 90 °.

[0029] In turn, Figure 3 shows a single roller slide 1 of the roller guide of Figure 1. It represents a plurality of roller bodies 2 (in this document, a total of ten, each with surfaces of peripheral cover 4) recorded by way of example in Figure 3 for a roller body 2 and the corresponding peripheral cover surface 4, where the roller bodies 2 are essentially circular cylindrical in design, and whose roller axes are aligned parallel to each other. yes. The roller bodies 2 are housed in a roller cage 3, which has an elongated and flat shape. As shown in Figure 1, the cover surfaces 4 project through openings 5 on both sides of the roller cage 3, so that a rolling action on both sides of the roller bodies 3 is made possible.

[0030] Figure 4 shows a perspective view of a device of the invention for guiding a sliding door 6, where, according to the representation, the guide is coupled to said sliding door 6. This sliding door 6 is adjustable to along the direction of travel 11 shown, where this direction of travel 11 circulates perpendicular to the guide direction 10 and with the height direction 12, also shown, forms a coordinate system of right angle.

[0031] The slide assembly 15, contemplated for the adjustment of the sliding door 6 in the direction of travel 11, comprises the tongue shown in figure 4, which is driven by a motor, not shown, in the direction of travel 11. , and which is coupled both to the support 7 and, by means of the coupling element 17, to a first slide of a slide assembly 15. The slide assembly is located in the rail configuration visible on the right side of Figure 4 and extending in the direction of displacement. Although an engine which, as described above, initially acts only in the direction of travel 11, an adjustment of the tongue 16 in the guide direction 10 is also carried out as a result of the curved profile of the guide rail 18 (also appreciable in FIG. 4), wherein said profile comprises both a component in the direction of travel 11 and a component in the direction of guidance 10.

[0032] The direct adjustment of the first slide by the tongue 16 through a first adjustment movement causes an adjustment of the sliding door 6 through a second adjustment movement, which is greater than the first adjustment movement. In fact, a first rack (not shown in detail) is rigidly connected to the first slide, which meshes with a gear arranged in a fixed position opposite to the first slide and which is not shown in the present document. This gear also engages with a second rack (also, not shown in detail) that is rigidly connected to the second slide of the slide assembly, which, in turn, is mounted in such a way that it can be moved relative to the first slide. In this sense, this configuration with the gear forms a sliding gear mechanism that translates the adjustment of the first slide to a relative superimposed adjustment of the second slide with the same distance, such that the second displacement of the final adjustment of the Sliding door 6 is twice as long as the first adjustment stroke of the first slide. The figures 5a-c show a relative movement between the support 7 and the frame 8 in the guide direction 10 at different times during the relative movement. In the representation of figure 5a, the support 7 extends to the maximum in relation to the frame 8, and in figures 5b and 5c it retracts in such a way that, in figure 5c, the support 7 is aligned with the frame 8 The mobility of the roller slide 1 shown in FIGS. 5 a-c in relation to both the support 7 and the frame 8 increases the possible adjustment distance of the support 7 along the guide direction 10, although the extension longitudinal of the roller slide 1 basically limits this fact in some way.

List of references

[0033]

1 Roller slide

2 Roller body

3 roller cage

4 Deck surfaces

5 Openings

6 Sliding door

7 Support

7a Frame counterpart

8 Marco

9 Roller set

10 Guide address

11 Direction of displacement

12 Height direction

13 Fixed component

14 Positioning component

15 Slider assembly

16 Tab

17 Coupling element

18 Guide rail

Claims (12)

A device for guiding a sliding door (6) of a motor vehicle, a device comprising a support (7) for supporting the sliding door (6), and a frame (8), which may be connected to the vehicle's chassis. motor, to receive the support (7), where the support (7) has a set of rollers (9) for the linear guide of the support rollers (7) along a guide direction (10) in the frame ( 8), characterized in that the roller assembly (9) has a roller guide for sliding doors, with two roller slides (1) arranged at an angle to each other, because the support (7) fits into the frame ( 8) in such a way that in each case, a cavity is created to accommodate the two roller slides (1), where the cavity extends in the guide direction (10), because each of the roller slides (1) ) has a plurality of roller bodies (2) arranged essentially parallel relative to a respective bearing axis and an elongated and flat roller cage (3) for accommodating the plurality of roller bodies (2), and in that the roller bodies (2) each have a peripheral cover surface (4) for rolling thereon. Device according to claim 1, characterized in that the roller cage (3) has separate openings (5), in particular on both sides, through which the respective cover surfaces (4) of the bodies protrude. of rollers (2) at least partially. Device according to claim 1 or 2, characterized in that the roller bodies (2) are designed to be essentially circular-cylindrical, because the roll cage (3) has an essentially rectangular cross-section, and because the openings (5) are arranged on a longer side of the rectangular cross section. Device according to any of claims 1 to 3, characterized in that the roller slides (1) of the roller guide are arranged at an angle of at least 60 ° and at most 120 °, preferably of essentially 90 ° one with respect to the other. Device according to any of claims 1 to 4, characterized in that the sliding door (6) is coupled to the support (7) in a displaceable manner along a direction of travel (11), direction of travel (11). ) extending essentially perpendicular to the guide direction (10). Device according to claim 5, characterized in that a normal force of the roller guide extends through a plane defined by the direction of travel (11) and a height direction (12) of the motor vehicle. Device according to any of claims 5 and 6, characterized in that the roller assembly (9) has two roller guides that are opposite each other in each case with respect to the direction of travel (11). Device according to any of claims 5 to 7, characterized in that the set of bisectors of angles defined by the arrangement of the roller slides (1) with respect to each other are essentially in a plane encompassed by the guide direction (10) and direction of travel (11). Device according to any of claims 5 to 9, characterized in that the device has a slide assembly (15) which is mounted on a support (7) in such a way that it is movable along the direction of travel (11) and which is coupled to the sliding door (6) to move the sliding door (6), and because the device has a sliding-support drive unit for adjusting the support (7) in the guide direction (10). ) and to adjust the slide assembly (15) in the direction of travel (11), so that the sliding door (6) also fits in the direction of travel (11). Device according to claim 9, characterized in that the winding support drive unit has a tongue (16) coupled to the slide assembly (15) and / or the support (7), a guide rail (18) for guiding the tongue (17) in a curve, and a motor to adjust the tongue (16) in the guide rail. Device according to any of claims 1 to 10, characterized in that the roller slides (1) are mounted between the support (7) and the frame (8) in such a way that they can be moved along the guide direction (10), so that a movement of the support (7) along the guide direction (10) results in a relative movement both between the roller slides (1) and the support (7) as between the roller slides (1) and the frame (8). 12. Motor vehicle comprising a device according to any of claims 1 to 11, a sliding door (6) guided by the device, a door opening that can be closed by the sliding door (6) and a guide assembly upper one arranged above the door opening, for supporting the sliding door (6), such that a force by weight of the sliding door is absorbed practically completely by the upper guide assembly and by the roller assembly (9). ).