Door module for a motor vehicle

Abstract

The invention relates to a door module (1) with a door module carrier (2) and with a window lifter assembly (3) arranged thereon with a cable drive (7) for adjusting a window pane of a motor vehicle, wherein the window lifter assembly (3) has mutually parallel guide rails (4a, 4b) and a traction cable (6) coupled to the cable drive (7), which is deflected at a number of deflection elements (8a, 8b, 9a, 9b) to form first traction cable sections (6a) along the guide rails (4a, 4b) and intersecting second traction cable sections (6b) between the guide rails (4a, 4b), and wherein at least one of the intersecting traction cable sections (6b) is guided along at least one deflection contour (10) arranged in the region between the guide rails (4a, 4b).

Description

The invention relates to a door module for a motor vehicle, having a door module carrier and having a window lifter assembly arranged thereon, having a number of guide rails and having a traction cable, and having a number of deflection elements, at which the traction cable is deflected along the guide rails and crossing second traction cable sections between the guide rails, forming first traction cable sections.A vehicle door of a motor vehicle (motor vehicle door) generally has an outer door panel forming the outer door skin and an inner door part, also referred to as a door shell or door box, and optionally an inner door panel and / or an inner door panel. The typically frame-like door inner part, which is connected to the door outer panel, has a frame or module cutout which is also used as a mounting opening and which, in the mounted state of the vehicle door, is at least partially, preferably completely, covered with a plate-like or plate-like door module carrier.As a rule, various functional components of the vehicle door, in particular a window lifter assembly, are pre-assembled on the door module carrier. The door module carrier pre-assembled with the window lifter assembly is also referred to as a door module and serves in particular for separating a wet space formed between the outer door panel and the door module from a dry space formed between the door module and the inner door panel or the inner door panel of the vehicle door, in particular for moisture-sensitive functional components of the door module.The plate-shaped door module carrier of such a vehicle door (motor vehicle door) can be formed metallically or preferably a plastic part or also to a substantial extent by organic sheet metal, for example with integrated or separate, mounted functional elements in the form of at least one guide rail of the window lifter assembly. Such an organosheet is typically a continuous fiber reinforced thermoplastic where continuous fibers are embedded in a thermoplastic matrix.The following details regarding the spatial directions are given in a coordinate system of the motor vehicle (vehicle coordinate system) regarding the exemplary installation situation in a side door of the motor vehicle. The axis of abscissa (X axis, X direction) is oriented along the vehicle longitudinal direction, and the axis of ordinate (Y axis, Y direction) is oriented along the vehicle transverse direction, and the axis of application (Z axis, Z direction) is oriented along the vehicle height.The door module or its door module carrier with the window lifter assembly is arranged in the XZ plane. The guide rails or their longitudinal direction of the rails are oriented substantially along the Z direction and, for example, arranged inclined with respect to the X direction. The window lifter assembly, in particular also for a frameless vehicle door, is typically designed with a cable system for raising and lowering a (window) pane. In this case, a double-strand window lifter (cable window lifter) with two parallel guide rails is generally used. The window pane is guided along the guide rails by means of so-called drivers. The driver connected to the window pane generally has a rail slider manufactured from plastic or from a die casting alloy (aluminum alloy) with a guide region (rail grip) encompassing the respective guide rail, so that the window pane is guided between the closed position and the open position.The cable system of the window lifter assembly or of the window lifter generally has a cable pull formed from a single traction cable or from a plurality of, for example two or three, traction cables. The traction cable wraps around, on the one hand, a cable drum with typically a plurality of windings and is wound and unwound from the latter. On the other hand, the pull cable or the pull cable is guided on the respective driver with multiple deflection at the rail ends of the guide rails and fixed there.The window lifter assembly also has a cable drive, typically with an electric motor with a coupled transmission, in particular with a worm transmission. In double-strand applications with two guide rails, the cable drive is typically arranged between the two mutually parallel guide rails on the door module carrier of the door module. It is also conceivable to arrange the cable drive outside or next to the guide rails, in particular on the A side of the guide rail facing the A pillar of the vehicle when the door module is mounted in a vehicle door. The cable drive is coupled, in particular via its gear mechanism, to the cable drum typically accommodated in a cable drive housing and drives it in a rotary manner. As a result, the drivers (rail sliders) connected to the traction cable or coupled to the cable pull are guided along the guide rails, and the window pane connected to the drivers is moved between the closed position and the open position.Bowden cables are used as cable pull as a so-called closed cable system or so-called open systems, i.e. cable pulls without a bowden cable sheath. In order to ensure the window lifter function in door modules with an open or partially open cable system, deflecting elements (deflecting units) in the form of rigid deflecting pieces or rotatably mounted deflecting rollers are necessary for cable deflection.The deflection elements, via which the pull cable is guided, are typically located in the region of the rail ends of the guide rails, such that the pull cable is deflected from a first direction of extent, which runs parallel to the guide rail, into a second direction of extent. This second direction of extension runs diagonally between the guide rails in a double-strand window lifter with two parallel guide rails and drivers guided slidingly thereon.In the case of open cable systems, i.e. traction cables without a Bowden cable sheath, or also in the case of partially open systems with a short Bowden section, the cable sections of the second direction of extent cross between the guide rails. This frequently leads to undesirable restrictions on installation space in this region of the door module or on the door module carrier. In other words, in the case of an open or partially open cable system, no installation space is available for further components of the door module along the crossing cable sections.The invention is based on the object of improving a door module which is designed with a window lifter assembly. In particular, a door module with the smallest possible space restriction between parallel guide rails of a window lifter assembly with an at least partially open cable system is to be specified.This object is achieved according to the invention with the features of claim 1. Advantageous embodiments and developments are the subject matter of the dependent claims (dependent claims).The door module has a door module carrier, in particular a plate-shaped or plate-like door module carrier, and a window lifter assembly arranged thereon, having an actuating or cable drive for adjusting a window pane of a motor vehicle. A window lifter assembly is understood to mean components of a window lifter of a motor vehicle mounted on the door module carrier and forming together with the latter the door module.The window lifter assembly preferably has two parallel guide rails for the slidably movable guidance of drivers (rail sliders) for the window pane. The preferably electromotive cable drive is suitably arranged between the guide rails. A traction cable of an at least partially open cable system, i.e. a traction cable without a Bowden cable sheath or with a traction cable section without a Bowden cable sheath and with an in particular comparatively short traction cable section with a Bowden cable sheath, is coupled to the cable drive. The pull cable is deflected at or by means of a number of deflection elements in such a way that, in particular, two mutually parallel first pull cable sections are formed along the guide rails and, in particular, two crossing second pull cable sections running between them. The deflecting elements are preferably arranged in the region of the rail ends of the guide rails.In the region between the guide rails, at least one deflection contour is arranged, on which one of the two second traction cable sections of the traction cable runs or is guided, forming a first subsection and a second subsection. The deflection contour can be formed from the carrier or can be designed as a separate deflection element, for example also as a deflection roller. The deflecting contour is suitably formed in an arc-shaped manner, in particular in the shape of a circular arc, preferably in a semicircular manner.The second subsection guided along the deflection contour runs--in relation to the vehicle coordinate system--in or parallel to the XZ plane of the door module carrier. A first subsection and a second subsection of the traction cable angled relative thereto are suitably formed on the deflection contour. The first subsection and the second subsection run at a deflection angle with respect to one another. In other words, by means of the deflection contour on the carrier side or fixed to the carrier, a subsection of one of the pull cable sections of the pull cable running between the guide rails is deflected by an angle in the X direction or in the Z direction. The (deflection) angle between the first subsection and the second subsection of the deflected traction cable section is greater than or equal to 90° and less than 180°. In particular, this angle is between 100° and 175°, advantageously between 110° and 170°. The angle is preferably between 130° and 165°, expediently between 140° and 160°. For example, the angle between the subsection of the deflected (second) traction cable section is (155±55°.By means of the deflection contour on the carrier side, suitable angle ranges or large cable angles can be realized, so that the available installation space of the door module can be designed to be particularly flexible. In other words, by means of the deflection of the traction cable in the region between the guide rails in the XZ direction, a comparatively small installation space restriction is achieved with simultaneously reduced production or production costs in comparison with a closed cable system (Bowden cable). In addition, in particular in embodiments with guide rails projecting upward beyond the base body of the module carrier in the Z direction, material savings can also be achieved by means of the deflection. Thus, the corresponding subsection of the pull cable can be guided at a reduced distance from the first pull cable section running along this guide rail as a result of the deflection, and the corresponding section of the guide rail can thus be made narrower in the X direction.In an advantageous embodiment, the deflection contour from the door module carrier is designed as a carrier structure that is raised in the Y direction. The pull cable or the corresponding pull cable section lies in a suitable manner at the apex of a preferably arcuate deflection contour.The deflection contour can have a plurality of three-dimensional contours or contour support profiles in the X, Y and Z directions. Particularly advantageously, the deflection contour has a cable groove which runs in particular in or parallel to the XZ plane of the door module or to its module carrier (carrier plate). Expediently, the deflection contour is assigned a, for example metallic, deflection piece made of a plastic, in particular an arcuate deflection piece, as a guide channel for the traction cable.The deflecting contour suitably forms an undercut for securing the traction cable in the Y direction. The deflection contour can also be assigned a blocking element against the cable sliding out in the (Y) direction perpendicular to the (XZ) plane of the door module carrier. In principle, the deflection contour preferably formed into the door module carrier is designed with an undercut in order to secure the pull cable in the Y direction. The deflecting contour, which is embodied or effective, for example, as a grinding support, can also be embodied with an additional element, in particular with additional securing hooks, in order to secure the traction cable in the Y direction.According to an advantageous development, the door module carrier has between the guide rails a groove-like contact contour spaced apart from the deflection contour in the XZ plane. One of the second traction cable sections, in particular the traction cable section which does not run along the deflection contour and / or is not coupled to the cable drive, is guided therein, preferably in a sliding manner.A practical development provides a tensioning device with a spring-elastic compensating and / or securing element, in particular for tensioning the traction cable. The clamping device, for example in the form of a spring element, is suitably arranged in the deflection contour or integrated therein.Exemplary embodiments of the invention are explained in more detail below with reference to a drawing. Shown therein are: FIG. 1 shows a top view of a door module of a motor vehicle having a window lifter assembly with guide rails arranged on a door module carrier and having a cable drive mounted on the carrier side, to which a cable run guided via deflection elements and running along a deflection contour at a first position is coupled, FIG. 2 shows a door module according to FIG. 1 with traction cable deflected at a deflection contour of a second position, and FIG. 3 is a sectional view along the line III-III in FIG. 1 of a deflection contour designed as a cable groove with an integrated device for tensioning the traction cable.Corresponding parts are provided with the same reference numerals in all figures.The following details regarding the spatial directions are given in a vehicle coordinate system regarding the exemplary installation situation in a side door of a motor vehicle. The X direction is oriented along the vehicle longitudinal direction and the Y direction is oriented along the vehicle transverse direction and the Z direction is oriented along the vehicle height.FIGS. 1 and 2 show a top view of a door module 1 with a plate-shaped or substantially flat door module carrier 2 and with a window lifter assembly 3 (pre)mounted thereon as a double-strand window lifter for a window pane (not shown) that can be moved between an open position and a closed position in a vehicle door of a motor vehicle. The illustrated window lifter assembly 3 comprises two parallel guide rails 4 aand 4 b. The door module carrier 2 is preferably made of plastic. In the exemplary embodiment, the guide rails 4 a, 4 bare integrated into the door module carrier 2.On the guide rails 4 aand 4 b, which are spaced apart from one another and run at least approximately parallel, a driver or rail slider 5 a, 5 bof the window lifter assembly 3 is guided displaceably in each case. By adjusting the drivers 5 a, 5 bconnected to the window pane along the guide rails 4 a, 4 b, the window pane can be raised and lowered.For adjusting the drivers (rail sliders) 5 a, 5 bof the window lifter assembly 3, a traction means in the form of a traction cable 6 is provided in a cable system which is open in the exemplary embodiment. The traction cable 6 is driven by an adjusting or cable drive 7 which is mounted on the door module carrier 2. In the embodiment of the window lifter assembly 3 of the door module 1 shown, the electric motor cable drive 7 in the exemplary embodiment is located between the two guide rails 4 aand 4 b.The cable drive 7 is suitably an electric motor (electromotive actuating or cable drive) coupled to a transmission. This cable drum is coupled in a manner not shown in more detail to a cable drum which is rotatably arranged in a cable drive housing and around which the traction cable 6 connected to the drivers 5 a, 5 bis wound with a plurality of turns. As a result of a rotational movement of the cable drum, the traction cable 6 is wound with one cable section onto the cable drum and is unwound with the other cable section from the cable drum. As a result, the cable loop formed by the traction cable 6 is displaced, which in turn leads to a movement of the respective driver 5 a, 5 balong the corresponding guide rail 4 a, 4 band thus to an adjustment of the window pane between the closed position and the open position.In the embodiment of the window lifter assembly 3 shown, upper deflection elements 8 aand 8 bin the form of rotatably mounted deflection rollers and lower, rigid deflection elements 9 a, 9 bare provided in the region of the rail ends of the two guide rails 4 a, 4 b. The traction cable 6 is deflected several times via the deflection elements 8 a, 8 band 9 a, 9 b, so that a first traction cable section 6 aand a second traction cable section 6 bare formed in each case. The respective first traction cable section 6 aruns in a first direction of extension oriented in the Z direction parallel and along the corresponding guide rail 4 a, 4 b. The respective second traction cable section 6 bruns along a second direction of extension, into which the traction cable 6 is deflected from the first direction of extension via the corresponding deflection element 8 a, 8 b.The second pull cable sections 6 bcross between the guide rails 4 a, 4 bin that the pull cable 6 extends from the upper left deflection element 8 ain the figures to the right lower deflection element 9 b, from there along the right guide rail 4 bto the right upper deflection element 8 b, from there via the cable drive 7 to the left lower deflection element 9 aand from there to the left upper deflection element 8 a. With this deflection system for the traction cable 6, the two drivers 5 aand 5 b-as well as the window pane connected to them-can be moved synchronously in the Z direction (upward and downward).The traction cable 6 serves to transmit an adjusting force generated by the cable drive 7 to the respective driver 5 a, 5 band is guided for this purpose via the respective deflection element 8 a, 8 b, 9 a, 9 b. At this, the pull cable 6 is deflected from a first direction of extension running along the guide rail 4 a, 4 b, in which the respective first pull cable section 6 aruns, into the second direction of extension, in which the respective second pull cable section 6 bruns.In the region between the guide rails 4 a, 4 b, a deflection contour 10 is arranged on the door module carrier 2. At this point, one of the two (second) pull cable sections 6 a, 6 bof the pull cable 6 running between the guide rails 4 aand 4 bis deflected, forming a first subsection 11 and a second subsection 12. The partial sections 11, 12 run in or parallel to the (XZ) plane of the door module carrier 2.In the embodiment according to FIG. 1, the deflection contour 10 is provided in the region of that second traction cable section 6 bwhich does not run over the cable drive 7 or is not directly coupled thereto. In the embodiment according to FIG. 2, the deflection contour 10 is provided in the region of that second traction cable section 6 bwhich is guided via the cable drive 7 or is directly coupled thereto. The deflection contour 10 arranged between the guide rails 4 a, 4 bon the door module carrier 2 is preferably integrated into the door module carrier 2. The traction cable 6 or its second traction cable section 6 b, in particular in a sliding manner, bears against the deflection contour 10. The second subsection 12 extends at a (deflection) angle α to the first subsection 11. In other words, the first subsection 11 and the second subsection 12 run with respect to one another at an angle α which, in the exemplary embodiments according to FIG. 1, is between 150° and 165°.In the exemplary embodiment according to FIG. 1, the subsection 11 of the traction cable 6 running between the guide rails 4 a, 4 bis deflected in the X direction and the other subsection 11 is deflected in the Z direction with respect to a second traction cable section 6 b, which is not deflected, by means of the deflection contour 10 on the carrier side.In the exemplary embodiment according to FIG. 2, the subsection 11 of the traction cable 6 running between the guide rails 4 a, 4 bis likewise deflected in the X direction by means of the deflection contour 10 on the carrier side, and the other subsection 11 is in turn deflected in the Z direction with respect to a second traction cable section 6 b, which is not deflected.The deflection contour 10 is formed from the door module carrier 2 as a carrier structure raised from the (XZ) plane of the door module carrier 2 and is formed in the exemplary embodiment in the shape of a bow or semicircular. The traction cable 6 or the corresponding subsection 11, 12 of the second traction cable section 6 blies against the apex of the arc shape of the deflection contour 10. In the exemplary embodiment, an additional, for example metallic, deflecting piece 13 with a guide channel for the traction cable 6 is assigned to the deflecting contour 10.Between the guide rails 4 a, 4 b, the door module carrier 2 has at least one groove- or bead-like contact contour 14 spaced apart from the deflection contour 10, in which contact contour the pull cable section 6 b, which is not guided in the deflection contour 10 or is coupled to the cable drive 7, is guided in a sliding manner.FIG. 3 shows a sectional view along the line III-III in FIG. 1 of a view into the deflection contour 10 with the traction cable 6 inserted therein. Accommodated in this is a compensating and / or securing element 16 with a V-shaped cable groove 17, in which the cable cable 6 is guided. This forms a securing section of the deflection contour 10, which extends at a distance from the XZ plane of the door module carrier 2 and engages over the pull cable 6 in the Y direction for securing it. The compensating and / or securing element 16 is also spring-loaded. For this purpose, in the exemplary embodiment, a spring element 18 is arranged in the receiving shaft 15. This forms, together with the compensating and / or securing element 16, a tensioning device 19 for the traction cable 6.In summary, the invention relates to a door module 1 having a door module carrier 2 and having a window lifter assembly 3 arranged thereon with a cable drive 7 for adjusting a window pane of a motor vehicle, wherein the window lifter assembly 3 has mutually parallel guide rails 4 a, 4 band a traction cable 6 coupled to the cable drive 7, which traction cable is deflected at a number of deflection elements 8 a, 8 b, 9 a, 9 bin such a way that (two) first traction cable sections 6 aare formed along the guide rails 4 a, 4 band (two) intersecting second traction cable sections 6 bare formed between the guide rails 4 a, 4 b, and wherein at least one of the intersecting traction cable sections 6 bis guided along at least one deflection contour 10 arranged in the region between the guide rails 4 a, 4 b.In particular in the case of the door module carrier 2 shown in FIGS. 1 and 2, in which the guide rails 4 a, 4 bprotrude upwards beyond the module main body in the Z direction, a saving in material in the rail section 20 indicated by the arrow is achieved by means of the deflection of the traction cable 6 at the respective deflection contour 10. Thus, the corresponding rail section 18 can be made material-free or the guide rail 4 a, 4 bcan be made correspondingly narrower in this rail region.The claimed invention is not limited to the above-described embodiments. Rather, other variants of the invention can also be derived herefrom by the person skilled in the art within the scope of the disclosed claims without departing from the subject matter of the claimed invention. In particular, all individual features described in connection with the various exemplary embodiments can also be combined in another manner within the scope of the disclosed claims without departing from the subject matter of the claimed invention.List of reference characters1 Door module 2 Door module carrier 3 Window lifter / assembly 4 a, 4 b Guide rail 5 a, 5 b Mitnehmer / rail slider 6 Traction cable 6 aFirst traction cable section 6 bSecond traction cable section 7 Cable / actuating drive 8 a, 8 b Oberes upper deflection element 9 a, 9 b Unteres deflection element 10 Deflection contour 11, 12 Subsection 13 Deflection piece 14 Contact contour 15 Receiving shaft / space 16 Compensation / securing element 17 Cable groove 18 Spring element 19 Tensioning device 20 Rail section / region α Deflection / angle

Claims

Door module (1) having a, in particular plate-shaped or plate-like, door module carrier (2) and having a window lifter assembly (3) arranged thereon with a cable drive (7) for adjusting a window pane of a motor vehicle, - wherein the window lifter assembly (3) has mutually parallel guide rails (4a, 4b) and a traction cable (6) coupled to the cable drive (7), which cable is deflected at a number of deflection elements (8a, 8b, 9a, 9b) forming first traction cable sections (6a) along the guide rails (4a, 4b) and intersecting second traction cable sections (6b) between the guide rails (4a, 4b), and - wherein at least one of the intersecting second traction cable sections (6b) of the traction cable (6) is deflected along at least one in the region between the guide rails (4a, 4b) are guided for the deflection contour (10).Door module (1) according to Claim 1, characterized in that a first subsection (11) and a second subsection (12), angled with respect thereto, of the traction cable (6) are formed on the deflection contour (10).Door module (1) according to Claim 2, characterized in that the first subsection (11) and the second subsection (12) run at a deflection angle (α) with respect to one another.Door module (1) according to Claim 3, characterized in that the deflection angle (α) between the first subsection (11) and the second subsection (12) of the deflected pull cable section (6b) is greater than or equal to 90° and less than 180°, in particular between 100° and 175°, advantageously between 110° and 170°, further preferably between 130° and 165°, further preferably between 140° and 160°, particularly preferably (155±55°.Door module (1) according to one of Claims 1 to 4, characterized in that the deflection contour (10) is formed from the door module carrier (2), in particular as a carrier structure which is raised from the plane (XZ) of the door module carrier (2).Door module (1) according to one of Claims 1 to 5, characterized in that the deflecting contour (10) is of arcuate form, in particular of circular arc shape, preferably of semicircular form.Door module (1) according to one of Claims 1 to 6, characterized in that the deflecting contour (10) has a cable groove running in or parallel to the plane (XZ) of the door module carrier (2).Door module (1) according to one of Claims 1 to 7, characterized in that the deflecting contour (10) is assigned an undercut for securing the pull cable (6) in the direction (Y) perpendicular to the plane (XZ) of the door module carrier (2) or a blocking element (13) against the pull cable (6) sliding out.Door module (1) according to one of Claims 1 to 8, characterized in that the door module carrier (2) has, between the guide rails (4a, 4b), a groove-like contact contour (14) which is spaced apart from the deflection contour (10) and in which one of the second pull cable sections (6b), in particular the pull cable section (6b) which does not run along the deflection contour (10) and / or is not coupled to the cable drive (7), is guided, in particular in a sliding manner.Door module (1) according to one of Claims 1 to 9, characterized bya tensioning device (19) having a spring-elastic compensating and / or securing element (16) for tensioning the traction cable (6).

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