Window regulator assembly with a rail slider for a window pane

Abstract

Window lift assembly (1) for an adjustable window pane (2) of a motor vehicle, comprising a rail slider (5) displaceably guided on a guide rail (7) with two clamping legs (5a, 5b) connected via at least one bracket tab (5c), between which a pane gap (11) is formed with a gap longitudinal direction (L) oriented between a gap opening (12) and the or each bracket tab (5c), - wherein a first clamping leg (5a) is designed to hold and guide the rail slider (5) on the guide rail (7), in particular with a rail grip (13), - wherein the second clamping leg (5b) is elastically displaceable relative to the first clamping leg (5a) and has a locking element (15) projecting into the pane gap (11) for a locking connection with the window pane (2), - wherein at least one decoupling rib (23) projecting into the pane gap (11) for the window pane (2) to be inserted into the pane gap (11) is formed on at least one of the clamping legs (5a, 5b), in particular on the second clamping leg (5b).

Description

[0001] The invention relates to a window lift assembly for an adjustable window of a motor vehicle, comprising a rail slider slidably guided on a guide rail with two clamping legs connected by at least one clamping tab, between which a window gap with a gap opening for the window pane is formed. The invention further relates to a rail slider for such a window lift assembly.

[0002] Movable vehicle windows are typically moved between a closed and an open position by electrically or electromotor-operated actuators known as motor vehicle window lifters. Such a window lifter typically comprises an electromotor-driven actuator and an actuating mechanism of a window lifter assembly that connects the actuator to the window pane or couples it with force transmission. The window lifter assembly is assigned to a vehicle door or the body of a motor vehicle.

[0003] To guide the window pane, for example, in a vehicle door, it is provided with at least one rail slider with a driver function for the vehicle pane at the lower edge of the window (bottom edge of the pane). The rail slider is typically guided in at least one guide rail of the window lift assembly, which acts as an adjustment or guide track, and can be moved along an adjustment path oriented in the direction of the vehicle height (Z-direction).

[0004] The rail slider, typically made of injection-molded plastic, has a base body with a guide area that, when assembled, encompasses the guide rail. In other words, the guide rail sits in the guide area of ​​the rail slider and is encompassed in certain areas or sections. The rail slider, which engages with the guide rail, is mounted for displacement along the guide rail, so that the window pane is guided linearly between the closed and open positions. The rail slider is coupled, for example, to a pane holder as a (pane) driver for mechanical connection to the window pane.

[0005] To connect the rail slider to the window pane, it has, for example, two driver or clamping legs, which are designed and intended to hold the window pane to be adjusted between them, for example, by clamping. For this purpose, the clamping legs are movable relative to each other. The window pane is held between the clamping legs of the rail slider with or above its lower edge (of the pane) and then clamped or held between them by bringing the two clamping legs closer together.

[0006] The rail slider can be designed as a so-called snap-in rail slider for screwless locking (clipping) of the window pane. For example, it is known from DE 10 2012 223 825 A1 to connect a driver with a rail slider function to the window pane without tools via an elastically displaceable locking section with a locking lug as the locking element. The locking section for connecting the window pane to the driver is elastically displaceable against a restoring force, so that the restoring force causes the locking lug of the locking section to engage with a locking opening on the pane side, thus establishing the connection between the window pane and the driver.

[0007] The rail glider is preferably a two-component injection-molded part made of a comparatively hard plastic, referred to below as the hard component, and a comparatively soft plastic, referred to below as the soft component. The soft component for the window holder is typically arranged behind the locking lug of the (snap-in) rail glider in the window insertion direction.

[0008] A desirable positioning of the soft component on the mounting surface of the respective clamping leg in front of the locking lug in the pane insertion direction, which would improve design flexibility or simplify manufacturing, would lead to friction differences between the soft component and the hard component during the pane assembly process. This, in turn, would lead to impaired assembly behavior when inserting the window pane into the pane gap of the rail slider, particularly due to reduced dynamics.

[0009] The invention is based on the object of providing a window lift assembly with a particularly suitable rail slider for a window pane of a motor vehicle. Furthermore, a suitable rail slider for such a window lift assembly (window lift) is to be provided. In particular, the aim is to achieve the most friction-neutral pane installation possible when inserting the window pane into the rail slider, preferably also with a rail slider with a soft component positioned on its leg-side mounting surface in front of the locking lug or locking element in the direction of pane insertion.

[0010] With regard to the window lift assembly, the object is achieved according to the invention with the features of claim 1 and with regard to the rail slider with the features of claim 10. Advantageous embodiments and further developments are the subject of the dependent claims (subclaims).

[0011] The following provides information regarding the spatial directions in a motor vehicle coordinate system (vehicle coordinate system) for an exemplary installation situation in a side door of a motor vehicle. The abscissa axis (X-axis) is oriented along the vehicle's longitudinal direction, the ordinate axis (Y-axis) along the vehicle's transverse direction, and the applicate axis (Z-axis) along the vehicle's height.

[0012] The window lift assembly, also referred to below as a window lifter or cable window lifter, for an adjustable window pane of a motor vehicle, in particular a vehicle door, comprises a rail slider that is slidably guided on a guide rail. The rail slider has two clamping legs connected by at least one bracket bracket, preferably by two spaced-apart bracket brackets, between which a pane or clamping gap (receiving gap) for the window pane is formed.

[0013] The at least one bracket tab is preferably a U-shaped bracket, the two U-shaped or bracket legs of which are integrally formed with the two clamping legs of the rail slider. On the slider side (narrow side) opposite the gap opening leading into the receiving gap, the respective bracket leg is flared or curved outwards in the longitudinal direction of the gap. In a typical vehicle coordinate system, the longitudinal direction of the gap is oriented in the Z direction. The window pane can be inserted into the receiving gap between the clamping legs via the gap opening opposite the or each bracket. The window pane is inserted in the longitudinal direction of the gap along the clamping legs from the gap opening towards the respective bracket.

[0014] One of the two clamping legs of the rail slider is designed to hold and guide the rail slider on the guide rail. This (first) clamping leg has a rail wrap for the guide rail. The rail wrap is formed on the side of the first clamping leg facing away from the receiving gap and has an approximately L-shaped guide contour, which corresponds to a corresponding profile section of the, for example, Z-shaped or top-hat rail-like guide rail.

[0015] The other (second) clamping leg of the rail slider is elastically (flexibly) displaceable relative to the first clamping leg, in particular by means of the at least one clamping tab. Preferably, at least one of the clamping legs, in particular the second clamping leg of the rail slider, has a lead-in slope in the region of the gap opening of the pane gap. Preferably, both clamping legs have a lead-in slope, in particular forming a conical or funnel-shaped lead-in gap.

[0016] Suitably, the second clamping leg of the rail slider has a locking element (locking lug, locking hook) that projects into the receiving gap and engages a locking opening on the pane side when the window pane is inserted into the receiving gap of the rail slider. Suitably, the locking element has a lead-in bevel inclined toward the or each bracket tab. Additionally or alternatively, the locking element has a locking edge that is slopeless relative to the opening of the receiving gap, with which the locking element engages the locking opening of the window pane.

[0017] The rail glider is suitably a two-component injection-molded part made of a hard plastic component and a soft plastic component provided on the leg surface of the or each clamping leg facing the pane gap. The hard component is in particular a polymer, preferably polycaprolactam (PA6). The soft component is in particular a thermoplastic, preferably polyurethane. In other words, the rail glider is preferably an injection-molded part made of plastic, preferably a two-component injection-molded part, made of a comparatively hard plastic, hereinafter referred to as the hard component, and a comparatively soft plastic, hereinafter referred to as the soft component.

[0018] In an advantageous embodiment, the soft component, in particular as a (mechanical) damping structure or component, is designed in a frame-shaped manner with frame strips running in the longitudinal direction of the gap and parallel to one another, as well as with a frame strip adjacent to these and oriented transversely to the longitudinal direction of the gap, which is arranged in the longitudinal direction of the gap to the gap opening above the locking element.

[0019] Particularly expediently, the soft component extends at least on the clamping leg having the locking element to the point where it joins the disc or clamping gap (receiving gap) of the rail slider at its gap opening. This is particularly advantageous with regard to the production of the rail slider or when injection molding the soft component using a suitable injection molding tool.

[0020] In a suitable embodiment, the soft component is frame-shaped with parallel frame strips running in the longitudinal direction of the gap, as well as with a frame strip adjacent to these strips and oriented transversely to the longitudinal direction of the gap. The transversely oriented frame strip, which preferably extends from the gap opening to the junction with the disc or clamping gap (receiving gap) of the rail slider, is arranged above the locking element in the longitudinal direction of the gap opening.

[0021] At least one of the clamping legs, in particular the (second) clamping leg having the locking element, is formed with at least one, preferably rib-like, decoupling geometry projecting into the pane gap. The decoupling geometry is understood to be a local elevation, in particular a decoupling rib or a sliding or guiding rib, along which the window pane inserted into the clamping or pane gap via the gap opening slides, decoupled from the soft component of the rail slider. The window pane or the lower edge of the pane slides along this or each decoupling geometry or decoupling or guiding rib when inserted into the pane gap, advantageously without contact with the soft component.

[0022] The respective decoupling rib is suitably provided on the inlet slope of the corresponding clamping leg provided in the region of the gap opening or is integrally formed thereon. The respective decoupling rib expediently runs in the longitudinal direction of the gap. The respective decoupling rib suitably runs at least partially in the longitudinal direction of the gap between the gap opening and the locking element. Particularly preferably, a decoupling rib is provided on both sides of the locking element and at a distance from it—transversely to the longitudinal direction of the gap. According to a suitable development, the respective decoupling rib has a run-up ramp rising in the longitudinal direction of the gap toward the locking element.

[0023] According to a particularly expedient embodiment of the rail slider, the respective bracket strap has, between a first bracket leg connected to the first clamping leg and a second bracket leg connected to the second clamping leg, a connecting leg with at least one relief geometry oriented in the longitudinal direction of the gap to the gap opening as a bending relief for the respective bracket strap.

[0024] In an advantageous development, the relief geometry is oriented in the longitudinal direction of the gap toward the gap opening. Suitably, the relief geometry is or includes a curvature on the inner side of the connecting leg facing the gap opening. Preferably, the relief geometry is a raised inner side curvature in a central leg section between two outer leg sections of the connecting leg.

[0025] This development also represents an independent invention, according to which the rail slider has a first and a second clamping leg, which are connected via at least one bracket tab, preferably via two bracket tabs spaced apart from one another. Between the clamping legs, a pane or clamping gap is formed with the longitudinal direction of the gap oriented between a gap opening and the or each bracket tab. Preferably, one of the clamping legs has a locking element (locking lug) projecting into the pane gap for a locking connection with the window pane. Between a first bracket leg connected to the first clamping leg and a second bracket leg of the bracket tab connected to the second clamping leg, a connecting leg with at least one relief geometry oriented in the longitudinal direction of the gap opening is provided as bending relief for the respective bracket tab.

[0026] Additionally or alternatively, several, preferably three, stiffening ribs are provided along the respective bracket tab. According to an expedient development, a number of stiffening ribs are provided along the respective bracket tab, preferably made of plastic, at least on the connecting leg. The stiffening ribs, which are preferably spaced apart from one another and are formed on the outside of the bracket tab, are provided as bending relief for the respective bracket tab and are suitably oriented parallel to the respective guide rib in the longitudinal direction of the gap. These stiffening ribs are spaced apart from one another and, in particular, oriented parallel to the respective guide rib in the longitudinal direction of the gap.

[0027] The load-relieving geometry and / or stiffening ribs can also be used to manage increased bending forces in the loaded area of ​​the stirrup plates. In particular, a shift in stresses and strains to non-critical areas can be achieved by geometrically altering the bending cross-section, preventing structural failure of the flexible or elastic stirrup connection to the (clip-in) rail gliders. In other words, the design modification reduces mechanical stresses and strains in loaded or crack-prone zones of the stirrup cross-section and directs them to non-critical areas.

[0028] A particularly useful development of the rail slider provides for support contours, particularly designed as a U-shaped support groove, to be formed onto the first clamping leg on both sides of the receiving gap, spaced apart from one another to form a two-point support for the window pane. Advantageously, the support contours are directly adjacent to the pane or clamping gap on the side. The support contours provided on the side of the clamping or pane gap reliably prevent undesired tilting of the window pane within the rail slider or relative to it. This, in turn, is particularly advantageous for a window lifter assembly having only a single guide rail with a rail slider guided thereon, or for a single-strand window lifter.

[0029] According to the invention, the rail slider has clamping legs that can be elastically displaced relative to one another and between which a pane gap or clamping gap (receiving gap) is formed. The clamping legs are connected via at least one bracket tab, preferably via two bracket tabs spaced apart from one another. The second clamping leg is elastically displaceable relative to the first clamping leg. A pane gap or clamping gap is formed between the clamping legs, with the gap longitudinally oriented between a gap opening and the or each bracket tab, wherein one of the clamping legs has a locking element projecting into the pane gap for a locking connection with the window pane. At least one of the clamping legs has at least one, in particular raised, rib-like decoupling geometry projecting into the pane gap formed thereon for the window pane to be inserted into the pane gap.

[0030] An embodiment of the invention is explained in more detail below with reference to a drawing. In the drawings: Fig. 1 shows a schematic representation of a window lift assembly with an actuator (actuator) and with a rail slider coupled to a guide rail with a driver function for a window pane of a motor vehicle, Fig. 2 in a perspective view the rail slider with a pane gap (receiving or clamping gap) for the window pane formed between clamping legs, Fig. 3 the rail slider according to Fig. 2 with a view into the disc gap to two decoupling ribs on one of the clamping legs, Fig. 4 a section of the clamping leg with the decoupling ribs, with a view of a soft component extending into a recess between the insertion bevels, Fig. 5 a partial side view of the rail slider with the window pane (schematically indicated) guided into the pane gap against the decoupling rib, Fig. 6 the rail glider in a further perspective view with a relief geometry on the inside of the bracket tabs connecting the clamping legs, and Fig. 7 a partial sectional view of the bracket tabs along the line VII-VII in Fig. 6.

[0031] Corresponding parts and sizes are provided with the same reference numerals in all figures.

[0032] The following provides information regarding the spatial directions in a motor vehicle coordinate system (vehicle coordinate system) for an exemplary installation situation in a side door of a motor vehicle. The abscissa axis (X-axis) is oriented along the vehicle's longitudinal direction, the ordinate axis (Y-axis) along the vehicle's transverse direction, and the applicate axis (Z-axis) along the vehicle's height.

[0033] Fig. 1 shows a schematic representation of an electric or electromotive window lifter assembly (window lifter) 1 as an adjusting device for a window pane 2 of a motor vehicle, in particular a vehicle door. The window lifter assembly 1 is assigned an actuating or adjusting drive 3, in particular an electromotive one, which acts on the window pane 2 by means of an adjusting mechanism 4 with a rail slider 5 of the window lifter assembly 1. In the exemplary embodiment, the adjusting mechanism 4 of the window lifter assembly 1 has a pull cable 6 and a guide rail 7, on which the rail slider 5 is guided so as to be movable along an adjustment path V. Several, for example two, pull cables 6 and two rail sliders 5 and guide rails 7 guiding them can also be provided, forming a two-strand window lifter.

[0034] The actuator 3 of the window lift assembly 1 drives a cable drum 9 of the actuating mechanism 4 via a worm or spur gear 8. The traction cable 6 is coupled to the cable drum 9 in such a way that rotations of the cable drum 9 caused by the gear 8 cause the traction cable 6 to wind and unwind. The traction cable 6 of a cable pull, designed, for example, as a Bowden cable, is guided over deflection elements or pulleys 10 and coupled to the rail slider 5 with a driver function for the window pane 2. The rail slider 5 is guided along the guide rail 7, with the window pane 2 moving along with it.

[0035] When the actuator 3 is actuated, the window pane 2 is moved along the adjustment path V into its set or desired (pane) position. The window pane 2 is reversibly movable between a closed position S, which represents the highest possible position, and an open position O, which represents the lowest possible position. In these positions S and O, the window pane 2 is in the Fig. 1 is indicated by dashed lines, while the window pane 2 is shown in a half-open intermediate position by solid lines.

[0036] The Fig. 2 to 7 show the rail slider 5 in various views. The orientation of the rail slider 5 shown corresponds to the directions X, Y, Z of the depicted vehicle coordinate system. The rail slider 5 is approximately U- or V-shaped and has a first clamping leg 5a and a second clamping leg 5b. A receiving or disc gap 11 with a gap opening 12 is formed between the clamping legs 5a and 5b. The clamping legs 5a and 5b are preferably connected to one another via two bracket tabs 5c spaced from one another in the X direction, which are integrally formed on the clamping legs 5a, 5b on the (lower) narrow side of the leg opposite the gap opening 12. The at least one bracket tab 5c is preferably a U-shaped bracket, the two U- or bracket legs of which are integrally formed on the two clamping legs 5a, 5b of the rail slider 5. The respective bracket tab 5c is curved or flared outwards in the Z direction.

[0037] As in Fig. As illustrated in Figure 5, the window pane 2 can be inserted into the receiving gap 11 between the clamping legs 5a, 5b via the gap opening 12. The window pane 2 is inserted in the longitudinal direction L of the receiving gap 11, extending between the gap opening 12 and the respective bracket tab 5c and oriented in the Z direction, along the clamping legs 5a and 5b.

[0038] On the first clamping leg 5a of the rail slider 5, on the side of the leg facing away from the receiving gap 11, an approximately L-shaped rail wrap 13 is formed. With the rail wrap 13 on the first clamping leg 5a, the rail slider 5 sits, in the assembled state of the window lifter assembly 1, on a correspondingly shaped rail section of the approximately hat-shaped guide rail 7, for example, and is guided and held therein in a sliding manner. The first clamping leg 5a is therefore also referred to below as the fixed clamping leg of the rail slider 5. On the side of the leg facing away from the receiving gap 11, a joining chamber 14 is formed on the first clamping leg 5a of the rail slider 5, as a so-called nipple chamber for cable nipples at the cable end of the respective pull cable 6 of the cable pull of the window lifter assembly 1, which is preferably designed as a Bowden cable.

[0039] The second clamping leg 5b of the rail slider 5 is elastically displaceable or flexurally deformable relative to the first, fixed clamping leg 5a and is thus movable, particularly in the Y-direction. A locking element 15 is formed on the second clamping leg 5b, also referred to below as movable, and projects into the receiving gap 11 (in the Y-direction). The locking element 15 is designed as a locking hook and has a lead-in slope 16 inclined toward the bracket tabs 5c, as well as a locking edge 17 that is slopeless relative to the gap opening 12 of the receiving gap 11 and normal (perpendicular) to the XZ plane of the second (movable) clamping leg 5b ( Fig. 2 and Fig. 3).

[0040] The clamping legs 5a and 5b each have a lead-in slope 18 in the area of ​​the gap opening 12 of the receiving gap 11. The window pane 2 can be easily and reliably inserted into the receiving gap 11 of the rail slider 5 via the leg-side lead-in slopes 18 in the area of ​​the gap opening 12 of the rail slider 5.

[0041] The window pane 2 is Fig. 1 with the lower edge of the pane designated 20 first, over the gap opening 12 into the receiving gap 11 and between the two clamping legs 5a and 5b of the rail slider 5 and locked in the receiving gap 11. The window pane 2 slides with its lower edge 20 of the pane along the inclined inlet bevel 16 of the locking element 15. The second, movable clamping leg 5b of the rail slider 5 is elastically bent in the Y direction, and the locking element 15 snaps, in particular in a form-fitting manner, into a corresponding locking opening of the window pane 2 in a manner not shown in detail. The leg edges or leg surfaces of the two clamping legs 5a and 5b of the rail slider 5 oriented in the longitudinal direction L of the gap run parallel to one another and / or to the other clamping leg 5b or 5a.

[0042] U-shaped support contours 19 are formed on both sides of the receiving gap 11 of the first clamping leg 5a of the rail slider 5, forming a flat two-point support for the window pane 2. The support contour 19, as a U-shaped support groove, is aligned with the pane or receiving gap 11, with the groove base forming a flat support for the support contour 19 for the lower edge 20 of the window pane 2. The contour sides of the support contours 19, or the U-legs or groove legs of the support contours 19, facing away from the receiving gap 11 are aligned with the lateral outer edge or outer surface of the first clamping leg 5a of the rail slider 5. The support contours 19 provided outside the receiving gap 11 overlap the second clamping leg 5b at least partially or with the free U-leg.The support contours 19 reliably prevent unwanted tilting of the window pane 2 within the rail slider 5 about an axis perpendicular to the XZ plane. This, in turn, is particularly advantageous for a single-strand window lifter with only one rail slider 5 on only one guide rail 7.

[0043] The rail slider 5 is a two-component injection-molded part consisting of a hard component 21a and a particularly elastic soft component 21b. The hard plastic component 21a is preferably a polymer, particularly polycaprolactam (PA6). The soft plastic component 21b is preferably a thermoplastic, particularly polyurethane. The soft plastic component 21b is provided in the region of the receiving or disc gap 11 on the clamping legs 5a, 5b, i.e., on the leg surface of the or each clamping leg 5a, 5b facing the disc gap 11, preferably also in the support contours 19, of the rail slider 5.

[0044] The soft component 21b is designed as a (mechanical) damping structure or damping component in a frame-like manner with frame strips 22a extending in the longitudinal direction L of the gap or oriented in the Z direction and parallel to one another, as well as with a frame strip 22b adjacent to these and oriented in the X direction, transverse to the longitudinal direction L of the gap. This frame strip is arranged above the locking element 15 and extends in the longitudinal direction L of the gap until it joins the disc or clamping gap (receiving gap) 11 of the rail slider 5 at its gap opening 12.

[0045] This is advantageous during the manufacture of the rail slider 5 or during the injection molding of the soft component 21b using a corresponding injection molding tool. As a result, the injection point for the soft component 21b can be advantageously positioned in the area of ​​the funnel-shaped gap opening 12 at the free end of the respective clamping leg 5a, 5b opposite the bracket tabs 5c, and the soft component can be injected more easily onto the hard component 21a of the rail slider 5.

[0046] In the exemplary embodiment, two decoupling ribs 23 projecting into the pane gap are formed on the second clamping leg 5b. The decoupling ribs 23 form a local elevation along which the window pane 2 slides, decoupled from the soft component 21b of the rail slider 5. This protects the soft component 21b of the rail slider 5 from damage when the window pane 2 is inserted into the receiving or pane gap 11. Due to this decoupling geometry formed by the raised decoupling ribs 23, the window pane 2, or its lower edge 20, slides contactlessly along the soft component 21b when inserted into the pane gap 11.

[0047] The decoupling ribs 23 provided on both sides of the locking element 15 are provided on the inlet slope 18 of the corresponding clamping leg 5b provided in the area of ​​the gap opening 12 or are formed thereon. The respective decoupling rib 23 runs in the longitudinal direction L of the gap and in sections between the gap opening 12 and the locking element 15. The respective decoupling rib 23 has a ramp 23a rising in the longitudinal direction L of the gap towards the locking element 15 ( Fig. 4).

[0048] The respective bracket bracket 5c of the rail slider 5 has a connecting leg 24c between a first bracket leg 24a formed on the first clamping leg 5a and a second bracket leg 24b formed on the second clamping leg 5b. This connecting leg has a relief geometry 25 directed toward the gap opening 12 in the longitudinal direction L of the gap, providing bending relief for the respective bracket bracket 5c. The dome-shaped relief geometry 25 is raised or protrudes upwards in a central region of the connecting leg 24c on its inner side. The relief geometry 25 is provided as a curvature on the inner side of the connecting leg 24c, which side faces the gap opening 12. In other words, the relief geometry 25, formed as a curvature, projects into the disc or clamping gap 11.

[0049] The relief geometry 25 as a raised curvature in a middle leg section between two outer leg sections drops towards the outer areas of the connecting leg 24c of the bracket tab 5c: As a result, the outer sides or areas of the bracket are relieved of bending stress as a result of the pivoting out of the second clamping leg 5b of the rail slider 5 when the window pane 2 is inserted into the receiving or pane gap 11 in order to reduce the (bending) stress there.

[0050] As from Fig.As can be seen comparatively clearly in Figure 7 and described in more detail therein, three stiffening ribs 26 are provided along the respective bracket tab 5c in the exemplary embodiment. Specifically, two outer stiffening ribs 26a and a central stiffening rib 26b running between them are provided. The three spaced-apart stiffening ribs 26a, 26b serve as bending relief for the respective bracket tab 5c. The stiffening ribs 26a, 26b, which run along both the connecting leg 24c and the two bracket legs 24a and 24b of the bracket tab 5c, are oriented parallel in the longitudinal direction L of the gap, at least in the region of the two bracket legs 24a and 24b, in particular also parallel to the respective decoupling rib 23.

[0051] By means of the relief geometry 25 and / or the stiffening ribs 26a, 26b, even increased bending forces in the loaded area of ​​the plastic bracket tabs 5c of the rail slider 5 are controlled. In particular, a shift of the stresses and strains into non-critical areas is achieved due to the geometric design of the bending cross-section.

[0052] In summary, the invention relates to a window lifter assembly 1 for a window pane 2 of a motor vehicle, comprising a rail slider 5 which is displaceably guided on a guide rail 7 and has clamping legs 5a, 5b connected via bracket tabs 5c, between which a pane gap 11 is formed, wherein at least one decoupling rib 23 projecting into the pane gap 11 for the window pane 2 to be inserted into the pane gap 11 is formed on one of the clamping legs 5a, 5b.

[0053] The invention is not limited to the exemplary embodiments described above. Rather, other variants of the invention can also be derived therefrom by those skilled in the art without departing from the scope of the invention. In particular, all individual features described in connection with the exemplary embodiment can also be combined with one another in other ways without departing from the scope of the invention. List of reference symbols 1 window regulator / assembly 2 window panes 3 Actuator 4 Adjustment mechanism 5 rail gliders 5a first (fixed) clamping leg 5b second (movable) clamping leg 5c Ironing tab 6 Pull rope 7 Guide rail 8 worm / spur gears 9 rope drum 10 Deflection element / roller 11 Mounting / disk gap 12 Stomata 13 Rail wraparound 14 joining / nipple chamber 15 locking element 16 Inlet slope 17 Locking edge 18 Inlet slope 19 Support contour 20 bottom edge of the pane 21a Hard component 21b Soft component 22a (longitudinal) frame strip 22b (transverse) frame strip 23 Decoupling rib 23a Ramp 24a first stirrup leg 24b second stirrup leg 24c connecting leg 25 Relief geometry 26a outer stiffening rib 25b middle stiffening rib L Gap longitudinal direction S Closed position O Disclosure V adjustment range X,Y,Z direction (in the vehicle coordinate system) QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2012 223 825 A1

[0006]

Claims

[1] Window lifter assembly (1) for an adjustable window pane (2) of a motor vehicle, comprising a rail slider (5) displaceably guided on a guide rail (7) with two clamping legs (5a, 5b) connected via at least one bracket tab (5c), between which a pane gap (11) is formed with a gap longitudinal direction (L) oriented between a gap opening (12) and the or each bracket tab (5c), - wherein a first clamping leg (5a) is designed to hold and guide the rail slider (5) on the guide rail (7), in particular with a rail grip (13), - wherein the second clamping leg (5b) is elastically displaceable relative to the first clamping leg (5a) and has a locking element (15) projecting into the pane gap (11) for a locking connection with the window pane (2), - wherein at least one decoupling rib (23) projecting into the pane gap (11) for the window pane (2) to be inserted into the pane gap (11) is formed on at least one of the clamping legs (5a, 5b), in particular on the second clamping leg (5b). [2] Window lifter assembly (1) according to claim 1, characterized by , - that the respective decoupling rib (23) runs in the longitudinal direction (L) of the gap, and / or - that the clamping leg (5b) having the or each decoupling rib (23) has, in the region of the gap opening (12) of the disc gap (11), an inlet slope (18) on which the decoupling rib (23) is provided. [3] Window lifter assembly (1) according to claim 1 or 2, characterized by , - that the respective decoupling rib (23) extends at least in sections in the longitudinal direction (L) of the gap between the gap opening (12) and the locking element (15), and / or - that a decoupling rib (23) is provided on both sides of the locking element (15) and at a distance therefrom. [4] Window lifter assembly (1) according to one of claims 1 to 3, characterized by , - that the respective decoupling rib (23) has a ramp (23a) rising in the longitudinal direction (L) of the gap to the locking element (15), and / or - that at least the clamping leg (5b) having the respective decoupling rib (23) has an inlet slope (18) at the gap opening (12). [5] Window lifter assembly (1) according to one of claims 1 to 4, characterized bythat the rail slider (5) is a two-component injection-molded part made of a hard plastic component (21a), in particular a polymer, preferably polycaprolactam (PA6), and of a soft plastic component (21b), in particular made of a thermoplastic, preferably polyurethane, provided on the leg surface of the or each clamping leg (5a, 5b) facing the disc gap (12). [6] Window lifter assembly (1) according to claim 5, characterized by that the soft component (21b) is frame-shaped with frame strips (22a) running in the longitudinal direction (L) of the gap and parallel to one another and with a frame strip (22b) adjacent to the latter and oriented transversely to the longitudinal direction (L) of the gap, which is arranged in the region of the gap opening (12) in the longitudinal direction (L) of the gap above the locking element (15). [7] Window lifter assembly (1) according to one of claims 1 to 6, characterized bythat the respective bracket tab (5c) has, between a first bracket leg (24a) connected to the first clamping leg (5a) and a second bracket leg (24b) connected to the second clamping leg (5b), a connecting leg (24c) with at least one relief geometry (25) oriented in the longitudinal direction (L) of the gap to the gap opening (12) as a bending relief for the respective bracket tab (5c). [8] Window lifter assembly (1) according to claim 7, characterized by , - that the relief geometry (25) is oriented in the longitudinal direction (L) of the gap to the gap opening (12), and / or - that the relief geometry (25) is designed as a curvature on the inside of the connecting leg (24c) facing the gap opening (12), and / or - that the relief geometry (25) is a raised curvature in a middle leg section between two outer leg sections of the connecting leg (24c), and / or - that a number of, preferably three, stiffening ribs (26a, 26b) are provided along the respective bracket tab (5c), which are spaced apart from one another and oriented in particular in the longitudinal direction (L) of the gap parallel to the respective decoupling rib (23). [9] Window lifter assembly (1) according to one of claims 1 to 8, characterized by that support contours (19) spaced apart from one another, in particular designed as a U-shaped support groove, are formed on the first clamping leg (5a) on both sides of the receiving gap (11), forming a two-point support for the window pane (2). [10] Rail slider (7) for a window lifter or a window lifter assembly (1), in particular according to one of claims 1 to 9, comprising a first clamping leg (5a) and a second clamping leg (5b), - wherein the clamping legs (5a, 5b) are connected via at least one bracket lug (5c), preferably via two bracket lugs (5c) spaced apart from one another, and the second clamping leg (5b) is elastically displaceable relative to the first clamping leg (5a), - wherein a disc or clamping gap (11) is formed between the clamping legs (5a, 5b) with a gap longitudinal direction (L) oriented between a gap opening (12) and the or each bracket tab (5c), - wherein one of the clamping legs (5b) has a locking element (15) projecting into the pane gap (11) for a locking connection with the window pane (2), - wherein at least one decoupling rib (23) projecting into the pane gap (11) for the window pane (2) to be inserted into the pane gap (11) is formed on at least one of the clamping legs (5a, 5b), in particular on the second clamping leg (5b), and / or - wherein along the respective bracket strap (5c), at least on one connecting leg (24c) between a first bracket leg (24a) connected to the first clamping leg (5a) and a second bracket leg (24b) connected to the second clamping leg (5b), a number of, preferably three, stiffening ribs (26a, 26b) spaced apart from one another, in particular oriented in the longitudinal direction (L) of the gap parallel to the respective decoupling rib (23), are provided as bending relief for the respective bracket strap (5c), and / or - wherein support contours (19) spaced apart from one another, in particular designed as a U-shaped support groove, are formed on the first clamping leg (5a) on both sides of the receiving gap (11), forming a two-point support for the window pane (2).

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