Guide rail assembly

Abstract

The invention relates to a guide rail assembly (20) for the sliding guidance of a rail slider (24) connected to a window pane (18). The guide rail assembly (20) comprises a guide rail (22) on which a cable pulley (26) is rotatably mounted, and which comprises a receptacle (32) for a fastening means (34) on a support component (36). A distance of the receptacle (32) from a reference plane (64), in which the end face (44) of the cable pulley (26) facing the guide rail (22) lies, is less than 3 mm. The invention further relates to a window lifter assembly (16).

Description

The invention relates to a guide rail assembly for the slidably guiding of a rail rail connected to a window pane. The guide rail assembly comprises a guide rail on which a cable pulley is rotatably mounted. The invention further relates to a window lifter assembly comprising a guide rail assembly.Motor vehicles, such as passenger cars (passenger cars), usually have a plurality of windows which can be moved with respect to a body of the motor vehicle. For this purpose, a window lifter assembly is usually used, by means of which the window pane, which forms a component of the window lifter assembly, for example, or is separate therefrom, is moved. Such a window lifter assembly is usually arranged in a vehicle door, the door body of which generally has an outer door part forming the outer skin of the vehicle door and an inner part connected thereto as an inner door cladding. Between this and the outer door part, an assembly space is formed, in which functional elements of the vehicle door and in particular the window lifter assembly are accommodated. This usually comprises a carrier component, also referred to as a carrier plate or door module carrier, for components of the window lifter assembly and, if appropriate, for a door lock, an airbag sensor, a loudspeaker and further functional elements. The carrier component additionally serves as a so-called wet-dry space separation and divides the cavity into a wet space side facing the door outer part, into which moisture can enter via a slot-like window opening of the vehicle door, and a dry space side facing the door inner part.The window lifter assembly comprises an electric motor actuator and, in the case of a single-strand window lifter, a single guide rail and, in the case of a two-strand window lifter, two guide rails, on which rail sliders or drivers connected to a window pane (vehicle window pane) are slidably guided. These are in turn coupled to the actuating drive via a flexible traction cable in order to move the window pane along an adjustment path between a closed position and an open position. The rail sliders (drivers) are usually arranged in the region of a lower edge of the window pane and are connected to the latter there.In order that an exertion of force on the traction cable is avoided when pulling on, the rail slider is prevented from getting caught on the respective guide rail, the traction cable is guided by means of a plurality of cable pulleys. These are usually rotatably mounted on both ends of the respective guide rail, so that the traction cable is guided between them and thus also in the region of the respective rail rail substantially parallel to the guide rail. The rope pulleys project over the guide rail, so that the traction rope is spaced apart from the guide rail and is not obstructed by it.The fastening of the guide rail to the door module carrier takes place between the two cable pulleys. When pulling on the traction cable, during assembly and when closing the door, corresponding forces act on the comparatively heavy cable pulley, which forces cause a high torque with respect to the connection to the carrier component, which acts as a fixed point. In order that this does not lead to a deformation of the guide rail, it has a plurality of reinforcing ribs either over its entire length or at least between the cable pulley and the connection to the carrier component. As a result, a material requirement is increased and a weight of the window regulator assembly is increased. Also, therefore, the tools used for manufacturing the guide rail must be designed to be enlarged, which leads to increased manufacturing costs and a prolonged manufacturing time.The object of the invention is to specify a particularly suitable guide rail assembly and a particularly suitable window lifter assembly, wherein robustness is advantageously increased, and wherein production costs and / or a weight is expediently reduced.With regard to the guide rail assembly, this object is achieved according to the invention by the features of claim 1 and with regard to the window lifter assembly by the features of claim 9. Advantageous refinements and refinements are the subject matter of the respective dependent claims.The guide rail assembly is expediently a component of a window lifter assembly in the assembled state. For this purpose, the guide rail assembly is in particular suitable, expediently provided and configured. The window lifter assembly is expediently a component of a motor vehicle in the assembled state and is therefore suitable and provided and configured for this purpose. The motor vehicle is in particular land-bound and preferably multi-lane. In this case, it is suitably possible to position the motor vehicle substantially freely, in particular on a roadway. For this purpose, the motor vehicle expediently has corresponding wheels. In summary, it is preferably possible to position the motor vehicle on land substantially independently of other circumstances. In other words, the motor vehicle is suitably not rail-guided. The motor vehicle is preferably a passenger car (passenger car) or a commercial vehicle, such as a truck (truck) or bus.The window lifter assembly serves in particular for adjusting a window pane with respect to a body of the motor vehicle. Preferably, the window pane is a component of the window lifter assembly or a component separate therefrom. The window lifter assembly is, for example, a component of a door of a motor vehicle, in particular a side door. The door has, for example, a frame by means of which the window pane is surrounded (at least in the closed state). Alternatively, the door is designed without a frame, and in the closed state, in particular the door and the window pane, the window pane abuts at least partially on the edge side of a roof of the motor vehicle, which is designed or can be adjusted, for example, in a rigid manner, i.e., is in particular a convertible roof.The guide rail assembly includes a guide rail. The guide rail assembly serves for the slidably movable guidance of a rail rail. The rail slider is made, for example, from a metal or preferably from a plastic. Preferably, the rail slider is a component of the window lifter assembly. At least the guide rail assembly is suitable, in particular provided and configured, for guiding the rail slider. Suitably, this was followed by the guiding by means of the guide rail, by means of which a path is thus in particular predetermined, along which the rail slider can be moved. In particular, the guide rail and the rail slider comprise structures engaging one another, such that only a movement of the rail slider in a longitudinal direction of the guide rail is possible. Alternatively, for example, the rail slider is only placed on the guide rail in the mounted state, which facilitates mounting.The rail slider itself serves for connecting to the window pane. For example, the window pane is fastened to the rail slider, for example directly or via further components. In particular, the window pane is clamped by means of the rail slide. In the mounted state, the guide rail is suitably arranged at least partially vertically and / or parallel to an adjustment path of the window pane. Thus, the rail slider is guided parallel to the adjustment path of the window pane by means of the guide rail.The guide rail has a receptacle for a fastening means. The fastening means serves for fastening to a carrier component, which is also referred to as a door module, module carrier, door module carrier or carrier plate. In particular, the carrier component is made of a plastic and / or a component of the window lifter assembly. By means of the carrier component, the guide rail and therefore also the rail slider and the window pane are expediently stabilized with respect to further components of the motor vehicle in the assembled state. By means of the receptacle, a location was provided at which the fastening means can and / or is to be arranged. In particular, an arrangement of the fastening means is only possible or at least facilitated there, and by means of the receptacle, for example, a mounting location for the fastening means is predetermined comparatively accurately, so that mounting is facilitated. In the assembled state, the guide rail is thus fixed and stabilized on the carrier component in the region of the receptacle, with the result that a movement of the guide rail with respect to the carrier component is prevented.In addition, a cable pulley is rotatably mounted on the guide rail. This is expediently located on the side of the guide rail opposite the carrier component. The rope pulley serves in particular for guiding a traction rope to which the rail sliders are suitably fastened in the assembled state. For example, a rolling bearing or a sliding bearing is fastened to the guide rail for the bearing. In particular, the rolling bearing is formed by means of a pin or bolt fastened to the guide rail. In particular, an axis of rotation of the cable pulley is substantially perpendicular to the longitudinal direction of the guide rail or is inclined with respect to the perpendicular at least by an angle of less than 20°, 10° or 5°.The rope pulley suitably comprises one or more grooves within which the rope may lie. The rope pulley is substantially cylindrical or spool-shaped, such as disk-spool-shaped. Thus, detachment of the pull cable is reliably prevented. Assembly of the traction cable in this way is also facilitated. At least the rope pulley has an end face which is in particular perpendicular to the axis of rotation of the rope pulley. The end face here faces the guide rail and forms in particular the end of the cable pulley facing the guide rail.A reference plane is defined by the end face, wherein the end face lies in the reference plane. Consequently, the reference plane is parallel to the end face. In summary, the end of the cable pulley facing the guide rail lies in the reference plane which is perpendicular to the axis of rotation of the cable pulley. The distance of the receptacle from the reference plane is here less than 3 mm. In other words, the solder is determined by the recording on the reference plane, and the distance corresponds to the length between the root point of the solder and the recording, for example. Thus, the image is less than 3 mm away from the reference plane. Preferably, the distance to the center point of the receptacle is determined, in particular if the receptacle and the end face are not parallel to one another.Due to such a construction, even in the case of high forces acting on the cable pulley, a lever arm is comparatively small with respect to the fixed receptacle. In other words, when a force is applied to the cable pulley, the cable pulley is divided into two components, one of which is perpendicular to the guide rail and the other is parallel to the guide rail. The component acting parallel to the guide rail is introduced into the carrier component due to the fastening to the latter. By means of the component running perpendicular to the longitudinal direction, on the other hand, a torque is provided which acts on the guide rail in the region of the cable pulley, wherein the pivot point is provided by means of the connection. Due to the small distance, the torque is comparatively low, so that an undesired deformation of the guide rail is omitted even with a comparatively low connection stiffness / robustness of the guide rail.In summary, acting forces or at least the acting component of the forces that could cause undesired deformation are reduced and a load on the guide rail is reduced. Thus, it can be designed and / or thinned with a comparatively low stiffness perpendicular to its extension direction, which is why manufacturing is simplified and a material requirement is reduced. Thus, material cost and manufacturing cost are reduced, and also a weight of the guide rail assembly. In this case, undesired deformation of the guide rail during use is prevented and consequently robustness is increased. In addition, it is possible to reduce a number and or design of reinforcing ribs of the guide rail, which leads to a further saving in material and facilitates production.Expediently, in the assembled state, the reference plane is arranged between the receptacle and the carrier component. Particularly preferably, however, the receptacle is arranged between the reference plane and the carrier component, so that a comparatively flat guide rail is realized.For example, the guide rail assembly comprises only a single such receptacle for a fastening means. Expediently, however, the guide rail comprises at least one further receptacle, which is preferably assigned to the opposite end of the guide rail. In the assembled state, a fastening means is accommodated by means of the latter, by means of which fastening means the guide rail is fastened to the carrier component. The guide rail is thus held on the carrier component in a comparatively stable manner, and tilting or pivoting is avoided. For example, still further receptacles are provided, wherein, for example, in the assembled state, each is assigned a fastening means. Thus, robustness is further increased. Alternatively, several receptacles are provided, but only two fastening means. The other receptacles serve here, for example, for fastening to different types of carrier component, so that the same guide rail I can be used, in particular, in the case of different types of motor vehicles.Alternatively or particularly preferably in combination with the further receptacle, the guide rail assembly comprises a further cable pulley. In particular, the cable pulleys have the same construction, so that identical parts can be used. The further cable pulley is also rotatably mounted on the guide rail here, and in particular the axes of rotation of the two cable pulleys are parallel to one another and / or these are arranged on the same side of the guide rail. Preferably, the two cable pulleys are assigned to different ends of the guide rail. Preferably, the rail slider is arranged between the cable rollers in the assembled state, which rail slider is fastened to the cable cable, which cable is tensioned between the two cable rollers and / or at least deflected by means of the two cable rollers. Thus, the rail slider is moved along the extension of the guide rail between the sheave upon movement of the traction cable, and the traction cable is substantially parallel to the guide rail.Expediently, in the two receptacles, the distance from the reference plane is less than 3 mm, or different reference planes are assigned to the two receptacles, each reference plane being determined by means of one of the cable pulleys in each case. In particular, each receptacle is assigned the reference plane which is determined on the basis of the respectively next rope pulley. In a further alternative, for example, the end face of both cable pulleys are in the same reference plane. In this way, in the case of both cable pulleys, deformation of the guide rail is prevented on account of a comparatively high acting force.Preferably, the distance is less than 2 mm or, more preferably, less than 1.5 mm. In this way, the forces / torques acting perpendicular to the course of the guide rail are those which could lead to a deformation of the guide rail. A load on the guide rail is thus further reduced and it can therefore be designed to be even more delicate, which leads to a further saving in material.For example, the end face of the cable pulley is spaced apart from the guide rail. Thus, no friction occurs when the sheave rotates, and the sheave is comparatively smooth. Moreover, wear is reduced. Particularly preferably, however, the end face bears directly against the guide rail. Tilting of the cable pulley with respect to the guide rail is avoided in this way, which increases robustness. A lever arm acting on the bearing of the cable pulley is thus also reduced, so that requirements are reduced there. In other words, it is not necessary to stiffen the guide rail there, wherein nevertheless tearing out or tilting of the bearing arrangement of the cable pulley on the guide rail is avoided. Thus, manufacturing cost is reduced, and it is possible to further reduce material requirement. In addition, in this way, the surface of the guide rail lies at least partially in the reference plane, which simplifies the construction of the guide rail, wherein the distance between the receptacle and the reference plane is comparatively small. In particular, the guide rail has a cable pulley surface which is at least partially shaped in accordance with the shape of the end face. Thus, the sheave is further stabilized, and a load on the bearing is further reduced.For example, the guide rail is rough-shaped in the desired shape and, for example, cast. Particularly preferably, however, the guide rail is a stamped and bent part. Thus, the manufacturing time is reduced and scrap is comparatively small. Due to the reduced distance of the receptacle from the reference plane, in particular the cable pulley surface, a required depth of the tool, by means of which the guide rail is punched out, is reduced in this case, and therefore tool costs are reduced. Also, due to the reduced required rigidity of the guide rail and particularly the reduction of the stabilizer rib, a width of the required sheet from which the guide rail is punched out is reduced, and hence a feed. As a result, the demands on the machine for manufacturing the guide rail are reduced.For example, the guide rail is manufactured from a plastic, for example by means of plastic injection molding. Expediently, the guide rail is made of a fiber-reinforced plastic. Preferably, however, the guide rail is made of a metal. Robustness is thus increased, wherein in the case of undesired, comparatively large acting forces, elastic deformation first takes place. Therefore, after the acting forces are released, the guide rail again assumes the original shape, and this can be used in various ways. For example, the guide rail is made of steel. Preferably, however, the guide rail is made of an aluminum. Due to the aluminum, material costs and also weight are reduced. Due to the reduced effective required stability of the guide rail, an undesired deformation of the guide rail is precluded even despite the use of aluminum, without the guide rail having an excessive thickness.For example, the receptacle is provided only by means of a round hole which is introduced into a substantially planar region of the guide rail. Preferably, however, the receptacle is introduced into a funnel-shaped depression. In other words, the guide rail comprises the funnel-shaped depression, which expediently points in the direction of the carrier component and / or away from the reference plane. Preferably, the bottom of the funnel-shaped depression forms the receptacle. In other words, the receptacle is located at the bottom of the funnel-shaped depression. The funnel-shaped depression acts in the manner of a stabilizing rib, so that robustness of the guide rail is increased. In this case, owing to the funnel-shaped depression, insertion of the fastening means is facilitated, and this is held there securely and stably after assembly. Also, due to the depression, the fastening means is at least partially protected.For example, the depression is introduced into a substantially planar piece of the guide rail. Particularly preferably, however, the depression is introduced into an elevation which is in particular at least partially of annular configuration. In particular, the depression is thus surrounded by an annular or circular section of the elevation due to the elevation. Due to the elevation and the depression, the cross section of the guide rail perpendicular to the reference plane in the region of the receptacle is thus in particular configured m- or wave-shaped. This further increases the stability of the guide rail without excessively increasing a thickness of the guide rail. It is also possible to configure the depression comparatively deep, wherein this is completely or partially compensated by means of the elevation. In summary, a comparatively extensive stabilization thus takes place, wherein, however, the extension of the guide rail perpendicular to the longitudinal direction is reduced. Due to the elevation, it is also facilitated to choose the distance of the receptacle from the reference plane to be comparatively small.For example, the guide rail between the cable pulley and the receptacle is substantially planar. Particularly preferably, however, the guide rail has a shoulder between the cable pulley and the receptacle. The shoulder is located here, at least in sections or preferably completely, on the side of the reference plane opposite the receptacle. In particular, the shoulder limits the possible cable pulley surface at least in sections. The shoulder suitably points away from the carrier component and is, for example, designed in the form of a bead. By means of the shouldering, the region of the guide rail between the cable pulley and the receptacle is further stabilized. Alternatively or in combination with this, the shoulder ensures that forces acting on the rope pulley are reliably introduced into the support component via the receptacle.The window lifter assembly is expediently a component of a motor vehicle in the assembled state and is suitable, expediently provided and configured for this purpose. The motor vehicle is land-bound, for example, and is, for example, a truck (truck), bus or preferably a passenger car (passenger car). The motor vehicle has, for example, a body which comprises an opening. The motor vehicle preferably has a door which is arranged in particular such that the opening can be covered by said door. Expediently, a hinge is present here, by means of which the door is mounted on the body, so that the latter can be moved with respect to the body, for example pivoted and / or at least partially moved along a longitudinal direction. The motor vehicle preferably has doors which are in particular each designed in the manner of a side door.Preferably, the window lifter assembly is associated with the door, if any. The motor vehicle suitably has a plurality of such window lifter assemblies, wherein in particular one of the window lifter assemblies is assigned to each door. For example, the motor vehicle has further window lifter assemblies which, however, are not a component of a door of the motor vehicle.The or all window lifter assemblies each have a guide rail assembly for the slidably movable guidance of a rail rail rail connected to a window pane. The guide rail assembly comprises a guide rail on which a cable pulley is rotatably mounted and which comprises a receptacle for a fastening means on a carrier component, wherein a distance of the receptacle from a reference plane in which the end face of the cable pulley facing the guide rail lies is less than 3 mm.The window lifter assembly comprises the fastening means and the carrier component, and the guide rail assembly is fastened to the carrier component by means of the fastening means. Expediently, at least one further fastening means is present here, so that a comparatively robust connection of the window lifter assembly to the carrier component is realized. Expediently, the window lifter assembly comprises the rail slider which is guided on the guide rail. For example, the window lifter assembly comprises the window pane, which is connected, preferably clamped or clipped, to the rail slider.For example, the window lifter assembly comprises only the one guide rail assembly. Particularly preferably, however, the window lifter assembly comprises two such guide rail assemblies which are offset with respect to one another at least partially perpendicularly to their longitudinal direction. In this case, the window pane is expediently assigned to both window lifter assemblies. Suitably, the window lifter assembly comprises the traction cable which is deflected / guided by means of the corresponding cable pulleys.For example, the window lifter assembly also comprises an actuating drive, by means of which the possible traction cable guided around the cable pulley(s) is driven. The actuator preferably comprises an electric motor, by means of which for example a gear, such as a worm gear, is driven. By means of the transmission, or at least the electric motor, a cable drum is preferably driven, around which the traction cable is wrapped. Thus, during operation of the actuator, the window pane is adjusted.The carrier component is manufactured in particular from a plastic, and for example further functional components are fastened or at least can be fastened to the latter. Such a functional component is, for example, a loudspeaker, a lock or and or an input device, such as a switch or a lever.For example, the fastening means is designed in the manner of a clip or a bolt. Particularly preferably, however, the fastening means comprises a pin which is fastened to a head. The fastening means is expediently substantially T-shaped. In other words, the fastening means is in particular a screw or a rivet.In this case, the pin is guided through the receptacles, and a clearance fit is suitably realized between the pin and the receptacle. In the assembled state, the head bears, expediently in a force-fit manner, against the guide rail. At least, in the mounted state, the head is located on the side facing away from the carrier component, so that the guide rail is held between the head and the carrier component. In this case, the pin is suitably fastened to the carrier component and, for example, screwed into the latter. This allows mounting of the guide rail from the side facing away from the carrier component.The receptacle is provided, for example, by means of a round hole. The position of the guide rail on the carrier component is thus predetermined comparatively accurately. Alternatively, for example, the receptacle is designed in the manner of an elongated hole, so that an alignment and / or adjustment of the guide rail on the carrier component can take place.The traction cable is guided and deflected by means of the cable pulley, so that the traction cable is not only arranged along a straight line, but at least along two intersecting straight lines. By means of this, a plane is defined in which the pull cable is thus located due to the deflection. The fastener extends through the plane. In other words, the fastening means is located on both sides of the plane. The receptacle and consequently the fastening means are located in particular at a position of the guide rail which is spaced apart from the traction cable, such that the traction cable is not impaired on account of the fastening means. Due to the protrusion through the plane, it is possible to use a comparatively large fastener despite the small distance of the receptacle from the reference plane, and this can be designed to be comparatively robust and / or cost-effective. Also, due to the size, mounting of the fastening means is facilitated.The invention further relates to a motor vehicle having such a window lifter assembly.The developments and advantages explained in connection with the guide rail assembly are also to be transferred analogously to the window lifter assembly / the motor vehicle and to one another and vice versa.An exemplary embodiment of the invention is explained in more detail below with reference to a drawing. Shown therein are: FIG. 1 is a schematic side view of a motor vehicle having a door that includes a window lifter assembly, FIG. 2 schematically illustrates the window regulator assembly comprising two guide rail assemblies, FIG. 3 shows a plan view of a guide rail of one of the guide rail assemblies, FIG. 4 is a perspective view of a detail of the guide rail, FIGS. 5, 6 are perspective and sectional views of a portion of one of the guide rail assemblies.Corresponding parts are provided with the same reference numerals in all figures.FIG. 1 schematically shows, in simplified form, a motor vehicle 2 in the form of a passenger car (passenger car). The motor vehicle 2 has a plurality of wheels 4, by means of which contact is made with a roadway, not shown in more detail. The wheels 4 are connected to a body 6 of the motor vehicle 2 by means of a chassis, which body is made at least partially from a sheet metal. The body 6 has an opening 8, which can be covered by means of a door 10. For this purpose, the door 10 is connected to the body 6 by means of a hinge 12, wherein the door 10 can be pivoted with respect to the body 6 on account of the hinge 12, such that the opening 8 of the body 6 is exposed or covered.The door 10 has a door body 14, by means of which the mechanical integrity of the door 10 is provided, and which is produced from a sheet metal. The door body 14, which is a component of the body 6, is mechanically attached to the hinge 12 and at least partially an outer skin of the door 10. When the window pane 18 and the door 10 are closed, the complete opening 8 is filled by means of the door body 14 and the window pane 18.FIG. 2 schematically illustrates the window lifter assembly 16 in a simplified manner, which comprises two guide rail assemblies 20 which are structurally identical to one another and are constructed in mirror-image fashion or function at least substantially identically. The guide rail assemblies 20 are offset with respect to the outer skin of the door 10 into the interior of the motor vehicle 2. Each guide rail assembly 20 includes a guide rail 22 that is arranged parallel to each other. In this case, the longitudinal direction of the guide rails 22 is substantially vertical or inclined with respect to the latter by a few degrees.Each guide rail 22 is movably supported by a respective rail slider 24 of the respective guide rail assembly 20, which, in the example shown, are arranged on opposite sides of the respective guide rail 22. In this case, formations of the rail slider 24 engage around the edge of the respective guide rail 22, such that the respective rail slider 24 can only be displaced along the longitudinal direction. The two rail sliders 22 are connected to the window glass 18. For this purpose, the window pane 18 is clamped to the two rail sliders 22 by means of a clamping mechanism, not shown in detail.On each guide rail 22, a respective cable pulley 26 of the guide rail assembly 20 is rotatably mounted at its ends in the longitudinal direction. A traction cable 28 is guided across by means of the cable pulleys 26, which traction cable is driven by means of an actuating drive 30, which comprises a cable drum, not shown in detail, and an electric motor. Each of the two rail sliders 24 is fastened to the traction cable 28 in the region between the two cable rollers 26 of the same guide rail assembly 20. Thus, during operation of the actuating drive 30, the traction cable 28 is moved, which leads to a synchronous movement of the two rail sliders 24 along the respective guide rail 22 and thus to the adjustment of the window pane 18.Each guide rail 22 has a receptacle 32 which is substantially designed as a round hole. Each receptacle 32 has guided through it a fastening means 34 of the window lifter assembly 16, which is designed in the manner of a rivet. The two receptacles 32 are assigned to the opposite ends of the respective guide rail 22, and the guide rail assemblies 20 are fastened by means of the fastening means 34 to a common carrier component 36 which is made of a plastic. Due to the two fastening means 34 per guide rail 22, a relative movement of the guide rails 22 with respect to the carrier component 36 is prevented.The carrier component 36 serves for receiving functional components, such as a lock or loudspeaker, for example, which is not shown in detail. The support component 36 is fastened to the door body 14 and divides it into a wet room side facing the outside of the motor vehicle 2 and a wet room side facing the interior of the motor vehicle 2.FIG. 3 shows a top view and FIG. 4 shows a perspective view of a portion of one of the two guide rails 22. The guide rail 22 is manufactured from an aluminum and stamped from an aluminum sheet and bent appropriately in a stamping process. In other words, the guide rail 22 is a stamped and bent part. The guide rail 22 has a longitudinal edge 38 which, in the assembled state, is engaged around by the associated rail slider 24. By means of the longitudinal edge 38, a Z-shaped cross section of the guide rail 22 is formed perpendicular to the longitudinal direction of the guide rail 22, which is parallel to the longitudinal edge 38. As a result, the guide rail 22 is stabilized over its full length.The guide rail 22 has two holes 40 which are made in a cable pulley surface 42 of the guide notes 22. The sheave surfaces 42 are associated with opposite ends of the guide rail 22 in the longitudinal direction and are substantially planar. As shown in perspective in FIG. 5 and in a sectional view in FIG. 6, each of the cable roller surfaces 42 is in contact with each of the cable rollers 26 with its end face 44 facing the guide rail 22. In other words, the end faces 44 bear directly against the guide rail 22. The cable pulleys 26 are each held on the guide rail 22 and rotatably mounted by means of a bolt 46 which is pressed into the respective hole 40 and is held there in a rotationally fixed manner. In this case, a slide bearing is provided in each case by means of the bolts 46.The cable roller surfaces 42 each pass directly into a grip 48 which runs perpendicularly with respect to the longitudinal edge 38 and the respective cable roller surface 42. By means of each wrapper 48, one of the ends of the guide rail 22 in the longitudinal direction is formed. Thus, each of the sheave surfaces 42 and also each of the sheaves 26 is associated with one of the ends of the guide rail 22 in the longitudinal direction, respectively. Due to the grips 48, the guide rail 22 is stabilized against bending. On the side of each cable pulley surface 42 opposite the respective wrapper 48, one of the receptacles 32 is arranged in each case. The receptacles 32 and the holes 40 are essentially located on a common straight line which is parallel to the longitudinal edge 38.On the side opposite the longitudinal edge 38, the approximately one-third end of the guide rail 22 is in each case beveled by means of a fold 50 running parallel to the longitudinal edge 38. Each fold 50 points in the opposite direction with respect to the longitudinal edge 38, namely in the direction of the carrier component 36.In addition, between each pulley surface 42 and the associated seat 32, the guide rail 22 is turned out to form a shoulder 52 located on the side of the fold 50 by means of which the pulley surface 42 is limited. In this case, the shoulder 52 projects in the longitudinal direction in each case beyond the cutout 32, with the result that each shoulder 52 runs at least between the respective cable pulley 26 and the receptacle 32. The shoulders 52 are offset away from the cable pulley surface 42 so that the respective cable pulley 26 is slightly surrounded at the edge by means of the latter.Each recess 32 forms the bottom of a respective funnel-shaped depression 54, so that the receptacle 32 is introduced into the funnel-shaped depression 54, which is also referred to merely as depression 54. The depression 54 points in the direction of the carrier component 36 and thus in the opposite direction of the shoulder 52. Due to such a configuration, the guide rail 22 has a substantially m-shaped cross section in the region of the elevation 56 and the depression 54 or a v-shaped cross section on each side of the hole 40. Due to this configuration, the guide rail 22 is further stabilized.In each recess 32 is arranged the respective fastening means 34, which comprises a pin 60 which is guided through the recess 32. A head 62 is formed on the pin 65, which head is inserted in the depression 54 and is located on the side of the guide rail 22 facing away from the carrier component 36. The opposite end of the pin 60 is guided through a corresponding opening of the carrier component 36 and widened in a rivet-like manner, so that the guide rail 22 is held on the carrier component 36 in a captive manner.Insertion of the fastener 34 is facilitated by the depression 54, and the head 62 is partially protected. Since the receptacles 32 and the holes 40 are substantially on a straight line and the cable pulley 26 has an enlarged extent perpendicular to the longitudinal direction and the respective axis of rotation, the cable 28 between the cable pulleys 26 is likewise parallel to the longitudinal direction, but is laterally offset with respect to the fastening means 34. Due to the cross-shaped deflection by means of each cable pulley 26, a plane is defined in each case by means of the traction cable 28 in the region of each cable pulley 26, wherein the fastening means 34 assigned to the respective cable pulley 26 is located between the two limbs of the traction cable 28 in this region. In this case, the fastening means 34 projects through the plane defined by the legs of the traction cable 28, which is why it is possible to configure the head 60 in a comparatively voluminous manner, which facilitates assembly. In other words, the traction cable ( 28) is deflected by means of each cable pulley 26 in such a way that it is located there in a respective plane through which the associated fastening means 34 projects.The cable roller surface 42 and thus the end surface 44 of the respective cable roller 26 facing the guide rail 22 lie in a reference plane 64, which is illustrated in FIG. 6. Thus, each of the pulleys 26 has a respective reference plane 64. The reference plane 64 is slightly tilted with respect to the longitudinal edge 38, and thus also the traction cable 28, and the respective shoulder 52 is located on the side of the reference plane 64 opposite the receptacle 32.In summary, the guide rail assembly 20 thus comprises the respective guide rail 22, on which the respectively assigned cable pulleys 26 are rotatably mounted. In this case, one of the receptacles 32 is arranged in each case in the region of each cable pulley 26, in which receptacle, in the assembled state, the respectively associated fastening means 84 is arranged, by means of which fastening means the guide rail 22 is fastened to the carrier component 36. In this case, a reference plane 64 is determined in each case by means of each end face 44 of each cable pulley 26, and the distance of the reference plane 64 from the receptacle 32, which is adjacent to the cable pulley 26 by means of which the reference plane 64 is defined, is less than 3 mm.When a force acts on the sheave 26 during assembly or operation of the motor vehicle 2, it includes two components each, the other component being within the reference plane 64 and perpendicular thereto. The force component acting in the reference plane 64 is introduced into the carrier component 36 by means of the respectively associated fastening means 34 on account of the extension of the guide rail 22 in the longitudinal direction and the shoulder 52, wherein a slipping of the guide rail 22 with respect to the carrier component 36 is avoided there on account of the depression 54 and the contact of the head 62. The force component acting perpendicular to the reference plane 64, on the other hand, causes a torque on the guide rail 22 in the region of the hole 40, wherein the torque acts with respect to the receptacle 32 due to the rigid fastening to the carrier component 36. By means of the longitudinal edge 38 and the fold 50, this is intercepted. However, if the torque is too great, the end of the guide rail 22 protruding beyond the receptacle 32 is bent off. However, since the distance of the receptacle 32 from the reference plane 64 is only 1.4 mm, the force required for this is comparatively large and does not occur either during operation of the motor vehicle 2 or during assembly of the window lifter assembly 16, even if the aluminum sheet from which the guide rail 22 is produced has a comparatively small thickness. The width of the guide rail 22, i.e. the extent between the longitudinal edge 38 and the folds 50, can also be selected to be comparatively small, which overall leads to a saving in material and thus to a reduced weight. Also, a required feed during the production of the guide rail 22 by means of die-cutting bending is reduced.The invention is not limited to the embodiment described above. Rather, other variants of the invention can also be derived from this by the person skilled in the art without departing from the subject matter of the invention. In particular, all the individual features described in connection with the exemplary embodiment can also be combined with one another in another manner without departing from the subject matter of the invention.List of reference characters2 Motor vehicle 4 wheel 6 body 8 opening 10 door 12 hinge 14 door body 16 window lifter assembly 18 window pane 20 guide rail assembly 22 guide rail 24 rail slider 26 cable roller 28 cable cable 30 actuating drive 32 receptacle 34 fastening means 36 carrier component 38 longitudinal edge 40 hole 42 cable roller surface 44 end face 46 bolt 48 embracing 50 fold 52 shoulder 54 depression 56 elevation 58 edge 60 pin 62 head 64 reference plane

Claims

Guide rail assembly (20) for the slidably guiding of a rail slider (24) connected to a window pane (18), which rail assembly comprises a guide rail (22) on which a cable pulley (26) is rotatably mounted, and which comprises a receptacle (32) for a fastening means (34) on a carrier component (36), wherein a distance of the receptacle (32) from a reference plane (64) in which the end face (44) of the cable pulley (26) facing the guide rail (22) lies is less than 3 mm.Guide rail assembly (20) according to claim 1, characterized in that the distance is less than 1.5 mm.Guide rail assembly (20) according to Claim 1 or 2, characterized in that the end face (44) bears directly against the guide rail (22).Guide rail assembly (20) according to one of Claims 1 to 3, characterized in that the guide rail (22) is a stamped and bent part.Guide rail assembly (20) according to one of Claims 1 to 4, characterized in that the guide rail (22) is produced from an aluminium.Guide rail assembly (20) according to one of Claims 1 to 5, characterized in that the receptacle (32) is introduced into a funnel-shaped depression (54).Guide rail assembly (20) according to Claim 6, characterized in that the depression (54) is introduced into an elevated portion (56).Guide rail assembly (20) according to one of Claims 1 to 7, characterized in that the guide rail (22) has a shoulder (52) which runs between the cable pulley (26) and the receptacle (32) and is located on the side of the reference plane (64) opposite the receptacle (32).Window lifter assembly (16) with a guide rail assembly (20) according to one of Claims 1 to 8, which is fastened to a carrier component (36) by means of a fastening means (34).Window lifter assembly (16) according to claim 9, characterised in that the fastening means (34) comprises a pin (60) guided through the receptacle (32), which pin is fastened to a head (62), wherein the head (62) is located on the side facing away from the carrier component (36), and wherein a pull cable (28) is deflected by means of the cable pulley (26) in such a way that it is located in a plane through which the fastening means (34) projects.

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