WINDOW REGULATOR OF A MOTOR VEHICLE

Description

[0001] The invention relates to a window lifter for a motor vehicle, comprising a functional carrier for at least one guide rail that movably guides a rail slider for supporting a vehicle window, and comprising a cable drive device according to the preamble of the claim. Such a window lifter is known, for example, from DE 10 2016 216 879 A1. It further relates to a method for mounting a cable drum in or on a functional carrier of such a window lifter.

[0002] Movable vehicle windows are typically moved between a closed and an open position by electrically or electric-motor-operated actuating devices known as (vehicle) window lifters. Such a window lifter comprises an (electric) actuator as a cable or actuator drive and an actuating mechanism that connects the actuator to the window pane or couples it with the power transmission, which are assigned to a vehicle door or vehicle body. The actuating mechanism is mechanically connected to the window pane to be moved by means of at least one driver or rail slider with a driver function that is movably guided on a guide rail.

[0003] To guide the rail slider along the guide rail, the adjustment mechanism includes a flexible traction mechanism, for example in the form of a Bowden cable or a cable sleeve-less (Bowdenless) pull rope, to move the window pane along the adjustment path between the closed and open positions. The pull rope is usually guided over deflection elements, such as pulleys, of the window lifter, which, like the respective guide rail and the actuator, are arranged or attached to an assembly or door module carrier, hereinafter referred to as a functional carrier, for example in the form of a door inner panel, as part of a cable drive device. Window lifters with such cable pull mechanisms are also referred to as cable-operated window lifters.

[0004] The cable drive device typically comprises a cable drum that is rotationally driven by the actuator or cable drive, around which the traction cable is wound and for this purpose has a helical or screw-like cable groove (cable groove) in which the traction cable is inserted, for example as a cable loop, typically with several axially spaced turns. The cable drum around which the traction cable is wound, which is usually rotatably mounted in a cable drive housing at a housing-side bearing point, is rotationally driven by the (electric) actuator motor, usually via a gear coupled thereto, in particular in the form of a worm gear as a 90° deflection gear. In other words, the actuator drive, in particular an electric motor with a coupled gear, and the cable drive housing with the cable drum accommodated therein, onto which the traction cable is or can be wound, form the cable drive device.

[0005] As a result of the rotating movement of the cable drum, the pull cable is wound onto the cable drum with one cable section (cable end) and unwound from the cable drum with another cable section (cable end). This shifts the cable loop formed by the pull cable, which in turn causes the rail slider to move along the guide rail and thus adjusts the window pane between the closed and open positions.

[0006] A window lifter (window lifter assembly) known from DE 10 2018 201 023 A1 has a cable drive housing in three-armed star shape with an axially raised housing contour - relative to the axis of rotation of the cable drum - and with an axially extending housing wall which partially encloses the cable drum and, together with the housing contour, forms an acute-angled inlet and outlet area for the inlet and outlet cable sections of the traction cable.

[0007] The cable drive housing is typically designed structurally, structurally, and with regard to its strength for specific vehicle or vehicle door systems or door modules and cannot be readily transferred to other systems. Due to different positions, mounting patterns, and / or screw connection patterns, as well as asymmetries in the right and left vehicle doors, even those of the same vehicle, different shapes or designs of the cable drive housing are often required. This undesirably results in correspondingly high material, manufacturing, and cost requirements.

[0008] The invention is based on the object of specifying a window lifter (window lifter system, window lifter assembly) with a particularly suitable cable drive device. In particular, a cable drive or cable drum housing of the cable drive device should be as universally applicable as possible, suitably also for different window lifters or window lifter systems (window lifter assemblies) and / or in the vehicle doors (left and right vehicle doors) of the same motor vehicle. Furthermore, a particularly suitable method for mounting a cable drum, in particular with a pre-spooled pull cable, in or on a functional carrier of a window lifter should be specified.

[0009] This object is achieved according to the invention with respect to the window lifter of a motor vehicle by the features of claim 1 and with respect to the assembly method by the features of claim 11. Advantageous embodiments and further developments are the subject of the dependent claims.

[0010] The window lifter, in particular as a window lifter system or window lifter assembly, for a motor vehicle comprises a functional carrier for at least one guide rail that movably guides a rail slider, in particular with a driver function for holding a vehicle window, and a cable drive device. The functional carrier, which is, for example, a component of a door module of a motor vehicle door, is suitably a plate-like component designed as a molded part with embossing and / or contours and, for example, as a plastic injection-molded part or as a stamped and bent part made of sheet metal. In particular, the or each guide rail can be integrated into the functional carrier as a rail contour for the rail slider.

[0011] The term "window lifter" is understood here and below to mean a window lifter assembly or, in particular synonymously, a window lifter system, preferably when the guide rails with the slidingly guided rail gliders and the cable drive device are mounted on the functional carrier or the guide rails are integrated into the functional carrier and the rail gliders and the cable drive device are mounted.

[0012] The cable drive device comprises an actuator, in particular an electric motor, and a cable drive housing, hereinafter also referred to as a cable drum housing, in which a cable drum is accommodated or can be accommodated, which is coupled or can be coupled to the actuator and rotatable about a rotational axis. In the case of an electric motor of the actuator having a motor shaft, this is a (brushless or brush-type) electric motor, which is preferably coupled to a worm gear as a 90° deflection gear. The motor shaft carries a rotor, suitably a commutator provided with a coil or motor winding, which is surrounded by energized or energizable brush carbons. The rotor and a stator, suitably formed from permanent magnets, are accommodated in a, in particular pot-shaped, motor housing (pole pot) of the electric motor (commutator motor).

[0013] The cable drum is wrapped with a traction cable, which is connected or connectable to the or each rail glider. Suitably, the traction cable is wound onto the cable drum in several turns in the assembled state, forming an incoming and an outgoing cable section, with the cable sections being guided over deflection elements. The cylindrical cable drum has a helical or screw-like cable groove (cable groove) on the casing side, in which the traction cable lies and is guided on the drum side.

[0014] The cable drive housing has a preferably circular or round base plate and a number of wall elements, between which the cable drum is or will be arranged. The wall elements are expediently formed onto the base plate and extend axially relative to the rotational axis of the cable drum. Particularly advantageously, the wall elements are designed as cylindrical axial sections, of which preferably three such elements or sections are provided, with recesses or gaps formed between them. A central, preferably cylindrical, receptacle is suitably provided in the base plate. This preferably serves as a receptacle for a shaft journal of a gear part (bearing or joining journal) of the actuator or cable drive.

[0015] The functional carrier has a joining contour for establishing a positive connection, in particular an axial positive connection, with the cable drive or cable drum housing. The joining contour on the carrier side is arranged on the circumference of a through-hole on the carrier side, through which the coupling of the actuator or cable drive to the cable drum located (received, arranged) in the cable drive or cable drum housing is established or established.

[0016] A "positive connection" or a "positive connection (positive connection)" between at least two interconnected parts is understood here and below in particular to mean that the interconnected parts are held together at least in one direction by a direct interlocking of the contours of the parts themselves or by an indirect interlocking via an additional connecting part. The "blocking" of mutual movement in this direction is therefore due to the shape.

[0017] The rope drive housing has at least one joining groove accessible in the circumferential direction (azimuthally). The rope drum has at least one radial joining element, which can be inserted into the housing-side joining groove by a rotational movement of the rope drive housing relative to the rope drum—or conversely by a rotational movement of the rope drum relative to the rope drive housing. The or each drum-side joining element is suitably an annular radial segment that projects radially beyond the drum body or drum shell of the rope drum.

[0018] According to a suitable development, the cable drive housing has at least one locking element for locking the cable drum to the cable drive housing. The locking element is suitably provided on the base plate and / or on a particularly sleeve-like receptacle for a shaft or gear pin of the cable drive housing, arranged centrally on the base plate. The locking or joining element there preferably extends radially and engages in a corresponding groove (annular groove) on the drum side during assembly of the cable drum.

[0019] Additionally or alternatively, radially outer and / or radially inner locking elements are particularly preferably provided in the area between the axial wall elements of the cable drive housing. The radially outer locking elements are suitably engaged behind by the radial joining elements of the cable drum during insertion of the cable drum into the cable drive housing, creating a locking connection.

[0020] The cable drum suitably has a central receiving opening with a drum-side joining contour for establishing a preferably positive-locking connection with the actuator. The respective radial joining element of the cable drum is preferably formed on the end face of the cable drum opposite the end face with the central receiving opening. Housing-side joining grooves for drum-side joining elements are expediently provided in the housing-side wall elements, preferably at their transition to the base plate.

[0021] During assembly, the cable drum is inserted into the cable drive housing (cable drum housing). The drum-side joining elements are inserted into the recesses between adjacent housing-side wall elements, allowing the cable drum to be rotated relative to the cable drive housing. During the rotational movement, the drum-side joining elements are inserted into the housing-side joining grooves. The connection between the cable drum and the cable drive housing thus established is a simple plug-and-turn or bayonet connection.

[0022] When the cable drive housing is designed with the locking elements, preferably on the bottom side and provided between the axial wall elements, the drum-side joining elements are locked with the housing-side locking or joining elements during insertion, whereby the cable drum is then axially secured in the cable drive housing and arranged or accommodated therein in a rotatable manner.

[0023] Advantageously, the traction rope is already wound onto the rope drum when the drum is inserted into the rope drive housing using the plug-and-turn lock and the positive connection is then made with the joining contour on the carrier side. In Due to the positive connection of the rope drive housing with the joining contour on the support side, the rope drum can rotate freely in the rope drive housing, as the drum-side joining elements can slide in both directions of rotation through the joining grooves on the housing side that are open on both sides in the circumferential direction.

[0024] According to an expedient development, the wall elements of the cable drive housing are designed to be stepped in the axial direction. Alternatively, a chamfer or a chamfer-like transition can be formed or provided between the wall element and the base plate of the cable drive housing. A contact collar, in particular one shaped like a ring or ring segment, is suitably formed between a radially outer and a radially inner wall region of the respective wall element. Advantageously, the housing-side joining groove for the radially flared joining element on the drum side is formed by means of the stepped shape or the chamfer-like transition between the base plate and the wall element on the radial inside of the respective wall element.

[0025] Further advantageously, the housing-side contact collar, formed radially outwardly of the wall elements, particularly by means of the stepped shape, corresponds to a (support-side) support collar provided in the region of the joining contour of the functional carrier. In other words, the or each wall element of the cable drive housing and the joining contour of the functional carrier have corresponding contact or support contours that provide an axial stop for the cable drive housing with the cable drum with the spooled traction cable accommodated therein, at least during or in the course of establishing the joining or positive-lock connection between the cable drive housing and the functional carrier.

[0026] In an advantageous embodiment, the support-side joining contour has a number of locking elements, particularly in the form of axial locking arms with radially inwardly directed locking hooks. The support-side locking elements overlap the base plate of the cable drive housing in the form-fitting connection on the side of the plate facing away from the housing-side wall elements.

[0027] According to a suitable development of the carrier-side joining contour, it has a number of, in particular, cylindrical, coaxial wall sections. The (axial) stop for the cable drive housing, with the cable drum already accommodated therein and wrapped by the traction cable, which is effective at least during or in the course of establishing the joining or form-fitting connection, is provided on the carrier side by a radially inner, coaxial wall section of the joining contour of the functional carrier. This section forms a contact surface, preferably interrupted along the circumference, as a support contour for the cable drive housing.

[0028] Another, particularly central, of these coaxial wall sections forms a further contact surface, preferably interrupted along the circumference, as a support contour for the cable drive housing. A (radially) outer coaxial wall section of the joining contour of the functional carrier suitably has a preferably conical contact surface for the base plate of the cable drive housing with the cable drum inserted therein. The housing-side base plate can also have a (corresponding) conical plate edge.

[0029] The (radially) outermost of the coaxial wall sections preferably carries the locking elements or locking arms. Their locking hooks project axially beyond the coaxial wall sections of the support-side joining contour. Suitably, the cable drum housing with the cable drum inserted therein is held in a rotationally fixed manner in the joining contour of the functional support. This is preferably achieved by circumferential recesses or axial grooves in the support-side joining contour or between its coaxial wall sections, into which axial grooves the axially oriented wall elements of the cable drive housing engage, particularly in a circumferential (azimuth) direction.

[0030] In addition, preferably two recesses are provided in the wall sections, through which the incoming and outgoing cable sections of the traction cable are or will be led out of the cable drive housing and the support-side joining contour. The housing-side recesses between the wall elements of the cable drive housing are aligned with the recesses of the support-side joining contour.

[0031] During the joining or form-fit connection, the insertion depth of the cable drive housing into the support-side joining contour is advantageously axially limited by the support-side wall sections. Furthermore, the cable drum with the wound traction cable is secured in the cable drive housing by the twist lock. Once the cable or actuator drive is coupled to the cable drum via the through opening surrounded by the support-side joining contour, the cable drum is axially secured in both axial directions and can rotate freely in the cable drive housing.

[0032] In the method for mounting a cable drum for a traction cable on a functional support, the cable drum, with the traction cable already wound on it, is inserted into the cable drive housing (cable drum housing). The cable drive or cable drum housing, with the cable drum accommodated therein and wrapped around by the traction cable, is then joined to the functional support in a form-fitting manner, particularly axially.

[0033] An embodiment of the invention is explained in more detail below with reference to a drawing. In the drawings: Fig. 1 in schematic representation a window lifter (window lifter assembly, window lifter system) with a plate-like functional carrier and with a cable drive device as well as with two guide rails with rail sliders guided thereon and connected to the cable drive device with a driver function for a (vehicle) window pane, Fig. 2 in perspective representation a section II from Fig. 1 on a larger scale with a rope drive housing joined to the functional carrier with an inset rope drum, looking at a base plate of the rope drive housing locked into a carrier-side joining contour with or for a rope drum, Fig. 3 in an exploded view of the rope drive device with the rope drive housing and with the rope drum on the carrier side of the functional carrier (shown in detail) having the joining contour, as well as with the rope drive (actuator) on the other carrier side, Fig. 4 in perspective view, a section of the functional carrier with a view of its joining contour in the area of ​​a carrier-side through-opening as a coupling or coupling interface between the rope drum and the actuator (rope drive), Fig. 5 in perspective view of the rope drive housing (rope drum housing) with wall elements formed onto a base plate, Fig.6 in perspective view the cable drum with radially oriented joining elements on a drum front side, Fig. 7 the cable drive housing (cable drum housing) with cable drum accommodated therein with wound-on traction cable in a perspective top view of a receiving opening with drum-side joining contour for the actuator, Fig. 8 in perspective view a variant of the cable drive housing (cable drum housing) with locking elements for producing a joining connection between the cable drive housing and the cable drum, and Fig. 9 in a perspective view the in the cable drive housing (cable drum housing) according to . Fig. 8 The rope drum is mounted and locked to the drum (without traction rope).

[0034] Corresponding parts and sizes are provided with the same reference numerals in all figures.

[0035] Fig. 1 shows a window lifter 1 of or for a motor vehicle, in this embodiment a so-called secondary cable window lifter, with two parallel guide rails 2, on which rail gliders 3 with a driver function are guided for sliding movement. A window pane 4 is held, for example clamped, on the rail gliders 3. The rail gliders 3 are connected to a traction cable 5, which is guided via upper and lower deflection elements 6 and 7, respectively, preferably in the form of deflection pulleys, and is coupled to a cable drive device 8. A rotary movement of the preferably electromotive cable drive device 8 leads to a movement of the window pane 4 into an open position or - in the opposite direction - into a closed position.

[0036] The cable drive device 8 has an actuator or cable drive 9 and a cable drum or cable drive housing 10, into which a cable drum coupled to the actuator 9 is rotated about an axis of rotation D ( Fig. 3 ) is rotatably received. The cable drum is wrapped by the traction cable 5 which is connected to the rail gliders 3. The actuator 9 has, in a manner not shown in more detail, an electric motor which is coupled to a gear. The cable drive device 8 is mounted on a functional carrier 11 on which the guide rails 2 are mounted or can be integrated therein. In other words, the functional carrier 11, for example as a component of a door module of a motor vehicle door, can be a molded part with rail contours already incorporated therein as guide rails 2 for the rail gliders 3. The deflection elements 6, 7 can also already be molded in the functional carrier 11.

[0037] The window lifter 1 with the guide rails 2 and the rail sliders 3 guided thereon as well as with the cable drive device 8 including the traction cable 5, the cable drive housing 10 and the cable drum can also be referred to here and below as a window lifter assembly or window lifter system.

[0038] The Figuren 2 and 3 show a section of the area of ​​the functional carrier 11 in which the cable drive device 8 is arranged and mounted on the carrier side. In Fig. 2 As can be seen, fastening points 12 are provided on the support side, in the exemplary embodiment three star-shaped fastening points 12, to which the actuator 9 is fastened, for example screw-fastened, to the functional support 11 by means of joining or screw pins 13.

[0039] In addition, Fig. 2 a motor housing 9a of an electric motor can be seen, which is connected to a Fig. 3 shown gear or pivot pin 14 of the actuator (cable drive) 9 of the cable drive device 8. The electric motor of the actuator 9 is coupled to a worm gear as a 90° deflection gear, which is arranged in a gear housing 9b of the actuator 9 and has or drives the pivot pin 14. In In a manner not shown in detail, a motor shaft carries a commutator provided with a coil or motor winding, which is covered by energized or energizable brushes. The rotor and a stator formed of permanent magnets are arranged in the pot-shaped motor housing 9a.

[0040] In the preferred embodiment shown, a support-side joining contour 15 is provided on the side of the functional carrier 11 facing away from the cable or actuator 9 (opposite), into which the cable drive or cable drum housing 10 with the cable drum 16 accommodated therein is inserted and locked. For this purpose, locking elements 17 of the support-side joining contour 15 are provided, the end-side locking hooks 18 of which engage over a base plate 19 of the cable drive or cable drum housing 10, hereinafter referred to simply as the cable drive housing. This creates a positive connection. Fig. 3 illustrated axis of rotation D of the cable drum 16 and the axial direction A coaxial therewith, an axial form-fitting connection of the cable drive housing 10 with the functional carrier 11 via its joining contour 15 is produced as a form-fitting joining connection.

[0041] Fig. 3 shows a longitudinal section of the cable drive housing 10 with the cable drum 16 accommodated therein and rotatable about the rotation axis D, which is coupled to the actuator 9 via the gear-side pivot pin 14 with an external toothing 20. For this purpose, the cable drum 16 has a central receiving opening 21 with a drum-side joining contour in the form of an internal toothing 22 for producing a positive joining connection with the external toothing 20 of the pivot pin 14 of the actuator 9.

[0042] A transmission-side shaft journal 23, which passes through the cable drum 16, is guided into a receptacle 24 formed on or molded into the base plate 19 of the cable drive housing 10. The cable drive housing 10 has at least one joining groove 25 accessible in the circumferential direction U. The cable drum 16 has at least one joining element 26 projecting radially beyond the drum body or drum shell.

[0043] In Fig. 3 In the joining state of the rope drive housing 10 with the functional carrier 11 shown, the rope drum 16 is freely rotatable within the rope drive housing 10 about the axis of rotation D in both directions of rotation, wherein the drum-side joining element 26 can pass through the housing-side joining groove 25 in both directions of rotation practically without contact.

[0044] The cable drum 16 is wrapped with the traction cable 5, as in Fig. 7 For this purpose, the traction cable 5 is wound in the assembled state onto the cable drum 16 with several turns, forming a Figur 1 incoming one marked 27a and one in Figur 1 spooled onto the outgoing rope section designated 27b, with the rope sections 27a, 27b being guided over the deflection elements 6, 7. For this purpose, the cylindrical rope drum 16 has a helical or screw-like rope groove (rope groove) 28 on the casing side, in which the traction rope 5 lies.

[0045] Fig. 4 shows the relevant section of the functional carrier 11 in the area of ​​its joining contour 15 for establishing the positive connection with the cable drive or cable drum housing 10. The carrier-side joining contour 15 is arranged on the circumference of a carrier-side through-opening 29, via which the actuator or cable drive 9 is coupled to the cable drum 16 accommodated in the cable drive or cable drum housing 10. The carrier-side joining contour 15 has a number of cylindrical, coaxial wall sections, namely a radially outer wall section 15a, a radially middle wall section 15b and a radially inner wall section 15c. The middle wall section 15b has a smaller axial height than the inner and outer wall sections 15c and 15a, respectively. The outer wall section 15a also projects beyond the inner wall section 15b. The locking elements 17 are integrated into the outer wall section 15a as locking arms with the locking hooks 18.These project axially beyond the inner wall section 15b, i.e. in the axial direction A coaxial with the rotation axis D. The middle wall section 15b and the inner wall section 15c form support or contact surfaces 30b and 30c, respectively, for the cable drive housing 10.

[0046] As in Fig. 3 As can be seen comparatively clearly, the outer wall section 15a forms a conical contact surface 30a, which tapers in the axial direction A towards the carrier-side through-opening 29, for the base plate 19 of the cable drive housing 10, which is preferably also conical on the outer edge. In the circumferential direction U between the cylinder-jacket-shaped wall sections 15a to 15c, two recesses or intermediate spaces 31 are provided in the carrier-side joining contour 15. The incoming and outgoing cable sections 27a, 27b of the traction cable 5 are led out of the carrier-side joining contour 15 via these recesses 31, in the exemplary embodiment at an angle of approximately 220° to 230° to one another. The carrier-side joining contour 15 also has, in the exemplary embodiment, three axial grooves 32 in the radially inner wall section 15c. One of these axial grooves 32 opens into one of the recesses 31.

[0047] Fig. 5 shows a perspective view of the cable drive housing 10 with the preferably circular base plate 19. In the exemplary embodiment, three axially extending wall elements 33 are formed onto this, between which the cable drum 16 is or will be received. The wall elements 33 are designed as cylindrical jacket-like axial sections, between which axial recesses or gaps 34 are formed. The wall elements 33 are stepped in the axial direction A. In this case, an annular or ring-segment-shaped contact collar 35 is formed on the outside between a radially outer (lower) and a radially inner (upper) wall region 33a or 33b of the respective wall element 33. By means of the stepped shape, the respective housing-side joining groove 25 is formed on the inside of the corresponding wall element 33. The cable drive housing 10 has three such joining grooves 25 due to the three wall elements 33 here.

[0048] The housing-side contact collar 35 corresponds to the central wall section 15b of the support-side joining contour 15. The housing-side base plate 19 corresponds to the inner wall section 15c of the support-side joining contour 15. In this way, the wall elements 33 and the base plate 19 of the cable drive housing 10, as well as the joining contour 15 of the functional carrier 11, have corresponding contact or support contours. In other words, the cable drive housing 10 can be supported on the support or contact surfaces 30b, 30c with its wall-element-side contact collar 35 and its base plate 19 at the plate edge. This support function forms an axial stop for the cable drive housing 10, in particular when the latter is inserted into the carrier-side joining contour 15 with the cable drum 16 arranged therein and the tension cable 5 wound on it, thereby producing the joining or positive connection.

[0049] When inserting the cable drive housing 10 into the support-side joining contour 15, the housing-side wall elements 33 engage in the support-side axial grooves 32 of the wall section 15c. The cable drive housing 10 is arranged in a rotationally fixed manner in the support-side joining contour 15, while the cable drum 16 can rotate about the rotation axis D.

[0050] The Figuren 6 and 7show the cable drive housing 10 with the cable drum 16 accommodated therein, with or without the traction cable 5 wound onto it. The drum-side receiving opening 21 with the internal toothing 22 can be seen. The three radially projecting, circular ring-segment-like joining elements 26 of the cable drum 16 in the exemplary embodiment are provided on the end face thereof facing away from the receiving opening 21 and, in the assembled state, facing the housing-side base plate 19, and are formed there on the cable drum 16. By a rotary movement of the cable drive housing 10 relative to the cable drum 16 - or vice versa - the drum-side joining elements 26 engage in the housing-side joining grooves 25. In this joined state, the cable drum 16 is axially secured in the cable drive housing 10.

[0051] Fig. 7 shows the cable drive housing 10 with the cable drum 16 accommodated therein and the traction cable 5 wound thereon. In the area of ​​the receiving opening 21, a nipple chamber 36 is provided on the drum edge side, in which a cable nipple 37 fastened to one end of the traction cable 5 is seated. On the drum end face on which the cable drum 16 has the internal toothing 22, the housing-side receptacle 24 is received in a drum-side, central recess or receiving contour 38 of the cable drum 16. As a result, by means of the support-side joining contour 15 and / or by means of the respective locking element 39, 40 or 41 described below, the cable drum 16 is radially secured in the cable drive housing 10.

[0052] According to the Fig. 8 The variant of the cable drive housing 10 shown has at least one such locking element or a number of such locking elements for establishing a locking or joining connection between the cable drum 16 and the cable drive housing 10. In the exemplary embodiment, three radially outer locking elements 39 are shown, which are provided on the base plate 19, preferably formed therefrom. These radially outer locking elements 39 are provided in the housing-side spaces 34 between wall elements 33 adjacent in the circumferential direction U.

[0053] It can also be seen that, in the exemplary embodiment, three radially inner locking elements 40 can be provided, which are also provided on the base plate 19, preferably formed therefrom, and are arranged in the intermediate spaces 34 on the housing side.

[0054] A single locking element 41 can also be provided on the sleeve-like receptacle 24 of the cable drive housing 10. The locking or joining element 41 there extends radially and, during assembly of the cable drum 16, engages in a manner not shown in detail in an annular groove on the drum side, particularly in the region of the recess or receiving contour 38 of the cable drum 16.

[0055] The cable drive housing 10 can have only one of the variants of the locking elements 39, 40, 41 or even two of these variants or even all three variants of the locking elements 39, 40 and / or 41.

[0056] As in Fig. 9 As can be seen, the radially outer locking elements 39 are engaged behind by the radial joining elements 26 of the cable drum 16 during insertion into the cable drive housing 10, thereby creating a locking connection.

[0057] During assembly, the cable drum 16, with the pre-spooled traction cable 5, is inserted into the cable drive housing (cable drum housing) 10. The drum-side joining elements 26 are inserted into the recesses 34 between the housing-side wall elements 33, so that the cable drum 16 can then be rotated relative to the cable drive housing 10. During the rotational movement, the drum-side joining elements 26 are inserted into the housing-side joining grooves 25. The connection of the cable drum 16 to the cable drive housing 10 thus established is achieved in the manner of a pure plug-and-turn lock or bayonet lock. The twist lock secures the cable drum 16 with the pre-spooled traction cable 5 in the cable drive housing 10, particularly during preparation and assembly of the cable drive housing 10 on or onto the functional carrier 11.

[0058] When the cable drive housing 10 is formed with the locking element 41 on the receptacle 24 or with the locking elements 40 and / or 41 on the bottom side and between the axial wall elements 33, the cable drum 16 is locked to the cable drive housing 10 during insertion. In the case of the radially outer locking elements 39, the locking is carried out with the drum-side joining elements 26, as can be seen from Fig. 9 can be seen. After locking, the cable drum 10 is axially secured in the cable drive housing 10 and yet is arranged to rotate therein.

[0059] Subsequently, the cable drive or cable drum housing 10, with the cable drum 16 accommodated therein and wrapped by the traction cable 5, is joined to the functional support 11 in a form-fitting manner. During the joining or form-fitting connection, the insertion depth of the cable drive housing 10 into the support-side joining contour 11 is axially limited by the corresponding support-side wall sections 15. When the actuator or cable drive 9 is coupled to the cable drum 16 via the through opening 29 surrounded by the support-side joining contour 15, the cable drum 16 is axially secured in both axial directions A. In the form-fitting connection of the cable drive housing 10 with the carrier-side joining contour 15, the cable drum 16 is freely rotatable in the cable drive housing 10 in that the drum-side joining elements 26 can slide through the housing-side joining grooves 25 in the circumferential direction U in both directions of rotation.

[0060] In summary, the invention relates to a window lifter 1 as a window lifter assembly or as a window lifter system with a functional carrier 11 and with a cable drive device 8 with a cable drive housing 10, in which a cable drum 16 which can be coupled to an actuator 9 and which is wrapped by a traction cable 5 is accommodated, wherein the cable drive housing 10 has a base plate 19 and wall elements 33 for receiving the cable drum 16, and wherein the functional carrier 11 has a joining contour 15 for producing a positive connection with the cable drum housing 10.

[0061] The claimed invention is not limited to the exemplary embodiment described above. Rather, other variants of the invention can also be derived therefrom by a 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 other ways within the scope of the disclosed claims without departing from the subject matter of the claimed invention.

[0062] In addition, the solution described can be used not only in the specific application case described, but also in a similar design in other automotive applications, such as door and tailgate systems, single-strand window regulators, vehicle locks, adjustable seat and interior systems as well as electrical drives, controls, sensors and their arrangement in the vehicle. List of reference symbols

[0063] 1 Window lifter / assembly / system 2 Guide rail 3 Rail slider 4 Window pane 5 Pull cable / inner cable 6 Upper deflection element 7 Lower deflection element 8 Cable drive device 9 Actuator / cable drive 9a Motor housing 9b Gearbox housing 10 Cable drive / cable drum housing 11 Functional support 12 Fastening point 13 Joining / screw pin 14 Gearbox / pivot pin 15 Support-side joining contour 15a Outer wall section 15b Middle wall section 15c Inner wall section 16 Cable drum 17 Locking element 18 Locking hook 19 Base plate 20 External toothing 21 Receiving opening 22 Internal toothing 23 Shaft / gearbox pin 24 Receptacle 25 Joining groove 26 Joining element 27a Incoming pull cable section 27bExtending pull rope section 28Rope groove 29Through opening 30aConical contact surface 30bSupport / contact surface 30cSupport / contact surface 31Support-side recess / space 32Axial groove 33Wall element 33aOuter (lower) wall area 33bInner (upper) wall area 34Housing-side recess / space 35Contact collar 36Nipple chamber 37Rope nipple38Recess / receiving contour 39Locking element 40Locking element 41Locking element A Axial direction D Rotation axis U Circumferential direction

Claims

1. Window lift (1) for a motor vehicle, having a functional carrier (11) for at least one guide rail (2), which slidably guides a rail slider (3) for holding a vehicle window (4), and a cable drive device (8) which has an actuating drive (9) and a cable drive housing (10), in which a cable drum (16), which is couplable to the actuating drive (9) and is rotatable about an axis of rotation (D) and around which a traction cable (5) is wrapped or can be wrapped, is received or can be received, - wherein the cable drive housing (10) has a base plate (19) and a number of wall elements (33), between which the cable drum (16) is arranged or can be received, and - wherein the functional carrier (11) has, in its circumference of a through opening (29) for coupling the cable drum (16) to the actuating drive (9), a joining contour (15) for producing a form-fitting connection to the cable drum housing (10) with the cable drum (10) inserted therein, characterized - in that the cable drive housing (10) has at least one joining groove (25) which is accessible in the circumferential direction (U), and - in that the cable drum (16) has at least one radial joining element (26) which passes or can be introduced into the housing-side joining groove (25) by means of a rotational movement of the cable drive housing (10) in relation to the cable drum (16).

2. Window lift (1) according to Claim 1, characterized in that the cable drum (16) with the traction cable (5) already wound thereon is inserted or can be inserted into the cable drive housing (10).

3. Window lift (1) according to Claim 1 or 2, characterized in that, in a preassembled state in the cable drive housing (10), the cable drum (16) is secured axially therein in the manner of a twist lock or bayonet lock.

4. Window lift (1) according to one of Claims 1 to 3, characterized - in that the cable drum (16) has a central receiving opening (21) with a drum-side joining contour (22) for producing a joining connection to the actuating drive (9), and - in that the radial joining elements (26) are integrally formed on that end face of the cable drum (16) which is opposite the central receiving opening (21).

5. Window lift (1) according to one of Claims 1 to 4, characterized - in that the wall elements (33) of the cable drive housing (10) are stepped in the axial direction (A), and / or - in that a bevel or a transition of a bevel is formed or provided between the wall element (33) and the base plate (19) of the cable drive housing (10), and / or - in that, in particular between a radially outer and a radially inner wall region (33a, 33b), a housing-side abutment collar (35) is formed on the outer side of the respective wall element (33) and / or the or a housing-side joining groove (25) is formed on the inner side of the respective wall element (33).

6. Window lift (1) according to one of Claims 1 to 5, characterized in that the joining contour (15) of the functional carrier (11) has a number of latching elements (17) which, in the form-fitting connection with the cable drive housing (10), engage over the base plate (19) thereof on the plate side facing away from the wall elements (33).

7. Window lift (1) according to one of Claims 1 to 6, characterized in that the joining contour (15) of the functional carrier (11) has a number of coaxial wall portions (15a, 15b, 15c), - wherein a radially inner wall portion (15c) of the joining contour (15) of the functional carrier (11) has or forms a contact surface (30c) for the wall elements (33) of the cable drive housing (10) with the cable drum (16) inserted therein, and / or - wherein a radially central wall portion (15b) of the joining contour (15) of the functional carrier (11) has or forms a contact surface (30b) for the base plate (19) of the cable drive housing (10) with the cable drum (16) inserted therein, and / or - wherein a radially outer wall portion (15a) of the joining contour (15) of the functional carrier (11) has or forms a conical contact surface (30a) for the base plate (19) of the cable drive housing (10) with the cable drum (16) inserted therein.

8. Window lift (1) according to one of Claims 1 to 7, characterized in that the cable drive housing (10) has at least one latching element (39, 40, 41) for latching the cable drum (16) to the cable drive housing (10).

9. Window lift (1) according to Claim 8, characterized in that the or each latching element (39, 40, 41) is provided on the base plate (19) and / or on a receptacle (24) of the cable drive housing (10).

10. Window lift (1) according to one of Claims 1 to 9, characterized in that the cable drive housing (10) with the cable drum (16) inserted therein is held in the joining contour (15) of the functional carrier (11) for conjoint rotation.

11. Method for mounting a cable drum (16) for a traction cable (5) on a functional carrier (11) of a window lift (1) according to one of Claims 1 to 10, - wherein the cable drum (16) with the traction cable (5) already wound thereon is inserted into the cable drum housing (10), and - wherein the cable drum housing (10), with the cable drum (16) around which the traction cable (5) is wrapped, received therein, is joined in a form-fitting manner to the functional carrier (11), in particular axially.