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 at least one guide rail (4) and at least one traction cable (6) coupled to the cable drive (7), which is deflected at deflection elements (8, 9), and wherein at least one traction cable section (6b) of the traction cable (6) is guided along a deflection contour (10) arranged in the region between the cable drive (7) and the respective deflection element (8, 9).

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 at least one guide rail and having at least one pull cable, and having a number of deflection elements at which the pull cable is deflected.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 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. A double-strand window lifter (cable window lifter) with two parallel guide rails or a single-strand or single-guided (cable) window lifter with only one (single) guide rail is used. The respective guide rail or its longitudinal direction of the rail is oriented substantially along the Z direction and is arranged, for example, inclined with respect to the X direction.The window pane is guided along the respective guide rail 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 rail, in particular the A-side guide rail, on its rail side 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 driver (rail slider) connected to the traction cable or coupled to the traction cable is guided along the guide rail, so that the window pane connected to the driver 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 (cable rollers) are used 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. In the case of a single-strand window lifter with only one single guide rail, the deflecting elements, via which the traction cable is guided, are typically located in the region of the rail ends of the guide rail. In this case, the traction cable is deflected between the cable drive and the deflecting elements, forming a first traction cable section running along or parallel to the guide rail and second traction cable sections. This causes a cable course of the or each second cable section, which differs from the parallel course to the first cable section. This has the result, in particular, that, on the one hand, an unfavorable entry angle is produced at the respective deflection angle and / or an undesired force profile is produced at the corresponding deflection point.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 improved cable entry, improved force profile and / or improved cable guidance, in particular in the region of the deflection elements, of a window lifter assembly with an at least partially open cable system, is to be specified. Preferably, a saving in material, in particular in the region of a rail protrusion of the guide rail via a module carrier of the door module (door module carrier), and / or a minimum amount of installation space on the door module is to be achieved.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 has at least one or a single guide rail for the slidably movable guidance of a driver (rail slider) for the window pane. The cable drive, preferably electromotive cable drive, is suitably arranged on the door module carrier offset or spaced apart from the guide rail in the X direction. At least one traction cable of an at least partially open cable system, i.e. at least one 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 respective traction cable is deflected at or by means of deflection elements in such a way that a first traction cable section is formed along the guide rails or parallel thereto and also second traction cable sections are formed between the cable drive and the deflection elements. The deflecting elements are preferably arranged in the region of the rail ends of the guide rails, such that one of the second pull cable sections runs between the cable drive and the upper deflecting element and the other second pull cable section runs between the cable drive and the lower deflecting element.At least one of the second traction cable sections of the traction cable is guided along a deflection contour arranged in the region between the cable drive and the respective deflection element. 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 along. 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 of the traction cable leading to the respective (adjacent) deflecting element and a second subsection, in particular angled thereto, leading to the actuating drive are suitably formed on the deflecting contour. The first subsection and the second subsection of the corresponding second traction cable section run at a deflection angle with respect to one another. The (deflection) angle between the first subsection and the second subsection of the deflected (second) pull cable section is greater than 90° and less than 180°. In particular, this angle is between 110° and 175°. For example, the angle between the subsection of the deflected (second) traction cable section is (165±10)°.Particularly preferably, by means of the deflection contour (an at least approximately parallel course of the first subsection leading to the respective deflection element is formed with the first traction cable section of the traction cable running along the guide rail or parallel thereto. This in turn leads to a particularly advantageous cable entry of the traction cable into the corresponding deflecting element. Additionally or alternatively, in particular in embodiments with a guide rail projecting upward beyond the base body of the module carrier in the Z direction, a saving in material can be achieved by means of the deflection.By means of the deflection contour on the carrier side, suitable angle ranges or large cable angles can be realized, so that an installation space saving on the door module carrier, in particular in the region of the cable drive and / or the lower deflection element, is achieved. As a result, 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, a comparatively small installation space restriction is achieved with simultaneously reduced production or production costs in comparison with a closed cable system (Bowden cable). Thus, the corresponding subsection of the pull cable can be guided at a reduced distance and / or smaller angle to the first pull cable section running along the 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.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 a guide rail arranged on a door module carrier and with a cable drive mounted on the carrier side, to which a cable run guided via deflection elements and running along a deflection contour of a first position and a second position is coupled, and FIG. 2 shows a sectional illustration along the line II-II in FIG. 1 of the deflection contour designed as a cable groove, for example of the first position, with an integrated device for tensioning the cable cable.Corresponding parts are provided with the same reference numerals in both 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.FIG. 1 shows 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 single-strand window lifter for a window pane (not shown) which can be moved between an open position and a closed position in a vehicle door of a motor vehicle. The window lifter assembly 3 illustrated comprises a guide rail 4, which is integrated into the door module carrier 2 in the exemplary embodiment. The door module carrier 2 is preferably made of plastic.A driver or rail slider 5 of the window lifter assembly 3 is displaceably guided on the guide rail 4. By adjusting the driver 5 connected to the window pane along the guide rail 4, the window pane can be raised and lowered.For adjusting the driver (rail slider) 5 of 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 means can also have two traction cables, in particular one for lifting and one for glazing the window pane. 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 on the A side, i.e. the side facing the A pillar of the motor vehicle, of the guide rail 4.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 detail to a cable drum which is rotatably arranged in a cable drive housing and around which the traction cable 6 connected to the driver 5 wraps 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 driver 5 along the guide rail 4 and 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, an upper deflecting element 8 in the form of a rotatably mounted deflecting roller and a lower, rigid deflecting element 9 are provided in the region of the rail ends of the guide rail 4. The traction cable 6 is deflected via the deflecting elements 8 and 9, so that a first traction cable section 6 aand second traction cable sections 6 bare formed. The first traction cable section 6 aextends in a direction of extension oriented in the Z direction parallel or along the guide rail 4. the respective second traction cable section 6 bextends between the cable drive 7 and the upper or lower deflection element 8, 9. Via the deflection elements 8 and 9, the traction cable 6 or the respective second traction cable section 6 bis deflected in the direction of extension oriented in the Z direction as a first traction cable section 6 aextending along the guide rail 4.The traction cable 6 serves to transmit an adjusting force generated by the cable drive 7 to the driver 5 and is guided for this purpose via the respective deflecting element 8, 9. At this, the traction cable 6 is deflected from the direction of extension running along the guide rail 4, in which the respective first traction cable section 6 aruns, into a direction extending toward the cable drive 7, in which the respective second traction cable section 6 bruns.At least one deflection contour 10 is arranged on the door module carrier 2. In the exemplary embodiment, such a deflection contour 10 is provided at two positions in each case. On the deflection contour 10, which is positioned between the cable drive 7 and the upper deflection element 8 and is considered in more detail below, one of the two second traction cable sections 6 bof the traction cable 6 coupled to the cable drive 7 is deflected to form a first subsection 11 and a second subsection 12. The deflection contour 10 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, abuts the deflection contour 10.The partial sections 11, 12 run in or parallel to the (XZ) plane of the door module carrier 2. the second partial section 12 runs at a (deflection) angle α to the first partial section 11. For reasons of clarity, this is only drawn in on the deflection contour 10 positioned between the cable drive 7 and the lower deflection element 9. 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, is approximately 170° at the upper deflection contour 10 and approximately 165° at the lower deflection contour 10.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.FIG. 2 shows a sectional view along the line II-II in FIG. 1 of a view into the deflection contour 10 with the traction cable 6 inserted therein. The deflecting piece 13 is accommodated therein as a compensating and / or securing element with a V-shaped cable groove 15, 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 deflecting piece 13 serving as a compensating and / or securing element is also spring-loaded. For this purpose, in the exemplary embodiment, a spring element 16 is arranged in the receiving shaft 14. This forms, together with the deflecting piece 13 serving as compensating and / or securing element, a tensioning device 17 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 at least one guide rail 4 and at least one traction cable 6 coupled to the cable drive 7, which traction cable is deflected at deflection elements 8, 9, and wherein at least one traction cable section 6 bof the traction cable 6 is guided along a deflection contour 10 arranged in the region between the cable drive 7 and the respective deflection element 8, 9.By means of the deflection of the traction cable 6 at the deflection contour 10, an improvement of the cable entry into the corresponding deflection element 8, 9 is achieved. In addition, in the case of the door module carrier 2 shown in FIG. 1, in which the guide rail 4 projects upwards beyond the module main body in the Z direction, a saving in material in the rail section 18 indicated by the arrow can be achieved in the region of the upper deflection element 8. Thus, the corresponding rail section 18 can be made material-free or the guide rail 4 can 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 Guide rail 5 Driver / rail slider 6 Traction cable 6 aFirst traction cable section 6 bSecond traction cable section 7 Cable / actuating drive 8 Upper deflection element 9 Lower deflection element 10 Deflection contour 11, 12 Subsection 13 Deflection piece 14 Receiving shaft / space 15 Cable groove 16 Spring element 17 Tensioning device 18 Rail section / region α Deflection angle

Claims

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 at least one guide rail (4) and at least one traction cable (6) coupled to the cable drive (7), which traction cable is deflected at deflection elements (8, 9), forming a first traction cable section (6a) along the guide rail (4) and second traction cable sections (6b) between the cable drive (7) and the deflection elements (8, 9), and - wherein at least one of the second traction cable sections (6b) of the traction cable (6) is guided along a deflection contour (10) arranged in the region between the cable drive (7) and the respective deflection element (8, 9).Door module (1) according to Claim 1, characterized in that a first subsection (11) leading or running to the deflecting element (8, 9) and a second subsection (12) of the traction cable (6) leading or running to the actuating drive (7) are formed on the deflecting 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 90° and less than 180°, in particular between 110° and 175°, particularly preferably (165±101°.Door module (1) according to one of Claims 1 to 4, characterized in that the deflecting contour (10) forms an at least approximately parallel course of the first subsection (11) leading to the respective deflecting element (8, 9) with the first pull cable section (6a) of the pull cable (6).Door module (1) according to one of Claims 1 to 5, 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 6, 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 7, characterized in that the deflecting contour (10) has a cable groove (15) which runs in parallel in or to the plane (XZ) of the door module carrier (2).Door module (1) according to one of Claims 1 to 8, characterized in that the deflecting contour (10) is assigned an undercut for securing the traction cable (6) in the direction (Y) perpendicular to the plane (XZ) of the door module carrier (2) and / or a deflecting piece (13), in particular as a compensating and / or securing element, against the traction cable (6) sliding out, in particular from a cable groove (15).Door module (1) according to one of Claims 1 to 9, characterized bya tensioning device (17) having a spring element (16) for tensioning the pull cable (6).

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