Multi-part driver and assembly process

Abstract

The proposed solution relates in particular to a driver (2) for a vehicle window lifter. The driver (2) comprises a first driver part (21), a second driver part (22) and a connecting part (23), wherein - the first driver part (21) is formed with a first guide section (211) and can be mounted on a first section (11) of the guide rail (1) formed with a first guide profile, - the second driver part (22) is formed with a second guide section (221) and can be mounted on a second section (12) of the guide rail (1) formed with a second guide profile and - the connecting part (23) is provided for fixing the first and second driver parts (21, 22) to one another in order to connect the first and second driver parts (21, 22) to one another after their assembly (21, 22) on the guide profiles of one guide rail (1).

Description

[0001] The proposed solution concerns in particular a driver for a vehicle window regulator.

[0002] Vehicle window lifters of a window lift system can generally be designed with either a single-strand or a double-strand design. In a single-strand vehicle window lifter, only one guide rail is provided, along which a driver is slidably guided to adjust a window pane, i.e., to raise and lower it. To increase the rotational rigidity of a single-strand vehicle window lifter, it is already known to provide two guide profiles on the guide rail, for example, by stamping, on which one driver is slidably held. The two guide profiles are then formed, for example, on opposite longitudinal sides of one guide rail.

[0003] To attach the driver to a corresponding guide rail during installation of the vehicle window regulator, the driver typically had to be pushed onto the guide rail from one end. A (rail) end piece could then be subsequently attached to the guide rail. For example, the rail end piece is connected to the guide rail by welding or riveting. To facilitate installation, it has already been proposed in practice to simply attach an end piece to a guide rail for a single-strand vehicle window regulator. For example, the guide rail is made of metal and the end piece is made of a plastic material.

[0004] However, there is still a need to further simplify the installation of vehicle window regulators, especially vehicle window regulators for a single-strand window regulator system.

[0005] The proposed solution provides a remedy here.

[0006] In particular, a multi-part driver for a vehicle window lifter is proposed, which is provided for displaceable mounting on a guide rail in order to adjust a window pane. The driver comprises at least a first driver part, a second driver part, and a connecting part. The first driver part is formed with a first guide section and can be mounted via this to a first section of the guide rail, which is formed with a first guide profile. The second driver part is in turn formed with a second guide section, via which the second driver part can be mounted to a second section of the same guide rail, which is formed with a second guide profile. The connecting part is provided for fixing the first and second driver parts in order to connect the first and second driver parts to one another after they have been mounted to the guide profiles of one guide rail.

[0007] In a proposed driver, the first and second driver parts can thus be mounted on the guide profiles of a guide rail assigned to them before they have been connected to the connecting part. Only then are the first and second driver parts fixed in their relative position to one another, so that the driver is displaceably mounted on the two guide profiles of one guide rail via the first and second driver parts, and the first and second driver parts are fixed relative to one another via the connecting part and are preferably rigidly coupled, so that they are moved synchronously along the guide profiles when an adjusting force acts on the driver. The multi-part design of the driver makes it considerably easier to mount the driver on exactly one guide rail.

[0008] In principle, it is not necessary for the first and second driver parts to be separate and completely distinct individual components. For example, the first and second driver parts can be connected to one another at least captively before they are mounted on the guide rail, so that the first and second driver parts are held together even before they are mounted on the guide rail. In this case, however, the driver parts are movable relative to one another and their position and alignment relative to one another are not yet fixed, so that the first and second driver parts can be mounted independently on assigned guide profiles of the guide rail. A rigid connection between the first and second driver parts only occurs when the connecting part is attached.

[0009] In one embodiment, it is alternatively provided that the first and second driver parts are (completely) separated from each other before installation on the guide rail and can be mounted independently of each other on the guide rail. The first and second driver parts are thus provided as individual parts that are only connected to each other after they have been mounted on the guide rail and via the connecting part, in order to form the driver for the vehicle window lifter together with the connecting part.

[0010] The connecting part can generally be a separate component that is independent of the first and second driver parts before the driver is assembled and is intended to be fixed to the first driver part and the second driver part. In such a design variant, the driver is therefore designed in at least three parts and the connecting part can be attached to both driver parts in order to rigidly couple them together when mounted on the guide rail. In an alternative design variant, the connecting part is formed on one of the driver parts and is thus an integral part of one of the driver parts. When the driver parts are mounted on the guide profiles provided for them, the first and second driver parts are then rigidly coupled to one another via the connecting part.For example, the first and second driver parts are fixed to one another via one or more snap-in connections via the connecting part formed on one of the driver parts.

[0011] In one embodiment, the first driver part, in a guide rail extending along a longitudinal direction, is designed and provided for mounting on the first guide profile transversely to the longitudinal direction. Alternatively or additionally, the second driver part can be designed and provided for mounting on the second guide profile transversely to the longitudinal direction of the guide rail. In such an embodiment, at least one of the first and second driver parts can be mounted laterally on the guide rail and here on the respectively assigned guide profile. Due to the multi-part, optionally at least three-part design of the driver, it is not necessary to slide the driver onto the guide rail from one (upper or lower) end of the guide rail. Via a lateral, ieBy attaching the driver parts transversely to the direction of extension of the guide rail, the installation of the vehicle window lifter can be made more flexible and / or easier, particularly since the guide rail can also be finally formed at its ends and, if necessary, even already mounted before one or more driver parts of the driver are mounted to the associated guide profiles.

[0012] For example, it can be provided that the first driver part is designed and provided for installation on the first guide profile, in which the first driver part is secured to the first guide profile by pivoting the first driver part about a spatial axis parallel to the longitudinal direction. In particular, the first driver part can be designed and provided for installation in which the first driver part is placed on the guide rail transversely to the longitudinal direction and is then secured to the first guide profile by pivoting the first driver part about a spatial axis parallel to the longitudinal direction. In this context, one also speaks of pivoting the driver onto the associated guide profile of the guide rail. The first driver part, by means of which the later finally mounted driver is slidably secured to the respective guide profile, can thus be mounted more easily on its guide profile.Alternatively or additionally, it can be provided that the second driver part is fixed to the second guide profile by pivoting about a spatial axis parallel to the longitudinal direction, if necessary (likewise) after prior attachment transversely to the longitudinal direction to the guide rail - if necessary an attachment along a second mounting direction opposite to a first mounting direction of the first driver part.

[0013] In principle, the first and second driver parts can be provided for mounting on different, first and second longitudinal sides of a guide rail. In such a guide rail, the first guide profile is thus formed on a first longitudinal edge of the first longitudinal side, while the second guide profile is formed on a second longitudinal edge of the opposite second longitudinal side. A guide rail can therefore form a guide profile on the right and left sides, to which one of the driver parts is mounted.

[0014] For the displaceable mounting of the first driver part on the guide rail, the first guide section can be designed and provided for at least partially encompassing a longitudinal edge of the first guide profile. Likewise, the second guide section of the second driver part can be designed and provided for partially encompassing a longitudinal edge of the second guide profile of the guide rail. One of the driver parts or both driver parts therefore have a guide section designed to slide along the guide rail, which is designed and provided for a positive connection with an associated guide track profile on its respective longitudinal edge. In particular, in this context, the driver parts of the driver can be provided for mounting a guide rail, which has two embossed guide profiles on its longitudinal edges for guiding the one - here at least three-part - driver.In particular, a guide profile can have a Z-shaped cross-section.

[0015] In one embodiment, the first and / or second driver part defines a stop, which, in conjunction with a counter-element, is provided for specifying a maximum lowered adjustment position of the window pane. A corresponding stop then protrudes, for example, from a driver body of the respective driver part with respect to an adjustment direction along which the driver is displaceable on the guide rail. If necessary, the respective stop can be made of a material that dampens an adjustment movement before the maximum lowered adjustment position is reached. For example, the stop can be elastically compressible for damping.

[0016] The connecting part, by means of which the first and second driving parts are fixed relative to one another in a proposed driver, can be connectable to the first driving part and / or to the second driving part in a form-fitting and / or force-fitting manner. In particular, in a variant embodiment based on this, it can be provided that the connection of the connecting part to the first or second driving part or to both driving parts can be fixed without additional separate fastening elements, i.e., fastening elements that still have to be mounted on the driving parts and the connecting part. For example, the connecting part can be pluggable onto the first driving part and / or the second driving part and can be fixed via one or more plug-in connections to form-fitting regions of the connecting part on the one hand and to one or more driving parts on the other.

[0017] For example, sections that can be positively engaged with one another are formed on the first driver part and the connecting part and / or on the second driver part and the connecting part. These positively engaged sections can be used to connect and fix the connecting part to the first and / or second driver part after the first and second driver parts have been mounted on one guide rail. For example, the connecting part can be clamped onto the first and / or second driver part.

[0018] In one embodiment, the connecting part has at least one support section provided for supporting a lower edge of the window pane to be adjusted by the driver. Here, the connecting part therefore forms at least one support section designed and intended for the window pane to rest on it with its lower edge when the vehicle window lifter and the window pane to be adjusted via it are installed in the vehicle as intended. Here, the first and second driver parts therefore support the at least three-part driver on the guide profiles of one guide rail, while the connecting part connecting the two driver parts to one another supports the lower edge of the window pane.

[0019] Part of the proposed solution is also a single-strand vehicle window lifter which, in addition to a guide rail, comprises a variant of a driver according to the proposed solution, which is movably mounted on one of the guide rails.

[0020] Furthermore, the proposed solution relates to a method for mounting a driver for a vehicle window lifter to a guide rail of the vehicle window lifter. The proposed method includes at least the following steps: - Providing an at least two-part driver comprising a first driver part, a second driver part and a connecting part, - Mounting the first driver part to a first section of the guide rail formed with a first guide profile, - Mounting the second driver part to a second section of the guide rail formed with a second guide profile and - Fixing the first and second driver parts to each other via the connecting part in order to connect the first and second driver parts already mounted on the guide rail (and held on different guide profiles of the guide rail) to each other, in particular to fix them relative to each other and to rigidly couple them to each other.

[0021] A variant of a proposed assembly method can, of course, be intended for the assembly of a variant of a proposed driver. The advantages and features of a variant of a proposed driver explained above and below therefore also apply to variants of a proposed assembly method, and vice versa.

[0022] In particular, in one embodiment of a proposed method, it can be provided, for example, that - the guide rail extends along a longitudinal direction, - the first driver part (in particular after the first driver part has been attached to the guide rail transversely to the longitudinal direction) is fixed to the first guide profile, which is formed on a first longitudinal side of the guide rail, by pivoting the first driver part about a spatial axis parallel to the longitudinal direction, - the second driver part (in particular after the second driver part has been attached to the guide rail transversely to the longitudinal direction) by pivoting the second driver part about a spatial axis parallel to the longitudinal direction - and typically opposite to a pivoting direction for the first driver part - is fixed to the second guide profile formed on an opposite second longitudinal side of the guide rail, and - the connecting part, which may be designed as a separate component of a driver comprising at least three parts, is attached and fixed to the first and second driver parts already mounted on the guide rail.

[0023] The attached figures illustrate possible embodiments of the proposed solution.

[0024] Here we show: Fig. 1A shows a section of a guide rail with two embossed guide profiles for a single driver of a single-strand vehicle window lifter, wherein the guide rail is shown in abbreviated form and two driver parts of the driver, which here has at least three parts, are mounted independently of one another and spatially separated from one another on each of the guide profiles; Fig. 1B the guide rail with the carrier of the Fig. 1A, wherein the two driver parts are connected to each other and rigidly coupled via a connecting part of the driver plugged onto the two driver parts; Fig. 2 shows an example of a rear vehicle door of a motor vehicle, showing a window lift system with a single-strand window lift, in which a variant of the proposed solution according to the Fig. 1A and Fig. 1B can be used; Fig. 3 a flow chart of a possible embodiment of a proposed assembly process.

[0025] The Fig. 2 shows a rear (left) vehicle door T. This vehicle door T is provided with a window opening for an adjustable window pane F. The window pane F can be lowered into a cavity in the vehicle door T along an adjustment direction V2 and raised again in the opposite direction, along an adjustment direction V1. For adjusting the window pane F, a window lift system with a single-strand vehicle window lifter is provided in a cavity provided between an inner door skin and an outer door skin.

[0026] The single-strand vehicle window lifter is mounted on a flat support component A, for example in the form of a door module support. A guide rail 1, made, for example, of a metallic material, is fixed to the support component A. A driver 2 connected to the window pane F is mounted on the guide rail 1 for displacement along the adjustment directions V1 and V2. A drive unit 3—typically an electric motor—with a cable drum is provided for power-operated adjustment of the driver 2 along the guide rail 1. The drive unit 3 transmits an adjustment force for raising or lowering the window pane F to the driver 2 via a cable connected to the driver 2.

[0027] For a single-strand window regulator according to the Fig. 2, it is particularly important that the guide rail 1 with the driver 2 slidably mounted thereon is comparatively rotationally rigid and thus also torsionally rigid in order to ensure a predetermined adjustment path for the window pane F along the adjustment directions V1 and V2. In this context, it has proven advantageous, for example, if two guide profiles are embossed along the length of the individual guide rail 1, on which the individual driver 2 is each slidably guided. However, with a single driver 2, the difficulty can arise that the driver 2 must be pushed on from one end of the guide rail 1.

[0028] This is the case with a variant of a proposed driver 2 according to the Fig. 1A and Fig. 1B is not the case.

[0029] Thus, the driver 2 in the version of the Fig. 1A and Fig. 1B is formed in at least three parts, with first and second driver parts in the form of driver wings 21 and 22 (as first and second parts) and a connecting part 3 (as third part). The first and second driver wings 21 and 22 are separate, individual parts that are separated from one another before the driver 2 is assembled and can be mounted independently of one another on the guide rail 1. Each driver wing 21, 22 has a wrap-around section 211 or 221 provided for sliding along the guide rail 1. A wrap-around section 211 or 221 is provided for at least partially encompassing a longitudinal edge of the respective guide profile on longitudinal sections 11 or 12 of the guide rail 1.

[0030] Each longitudinal section 11 or 12 forms a guide profile, which defines the adjustment path for the driver 2 and which, in the present case, has a Z-shaped cross-section. The guide profile of one section 11 is, for example, based on the top view of the Fig. 2 - formed on a left longitudinal edge of the guide rail 1, while the other section 12 is provided on the right longitudinal edge of the guide rail 1. Transversely to a longitudinal direction L, along which the guide rail 1 extends, the two sections 11 and 12 are connected to each other via a base section 13. The longitudinal sections 11 and 12 and the base section 13 are formed integrally with each other.

[0031] As already explained above, the two carrier wings 21 and 22 can be mounted independently of one another on the guide rail 1. In this case, each of the carrier wings 21, 22 can be attached to the guide profile of one (left) section 11 or the other (right) section 12 assigned to the respective carrier wing 21 or 22, transversely to the longitudinal direction L along different mounting directions on the guide rail 1 - in the case of the first carrier wing 21 from the left and in the case of the other carrier wing 22 from the right. The carrier wings 21, 22 can then be pivoted along mutually opposite pivot directions S1, S2 into their Fig. 1A. The two carrier wings 21 and 22 can then be attached laterally to the guide rail 1 and swung open – once from the left and once from the right.

[0032] Several sections are formed on driver bodies 210, 220 of the driver parts 21 and 22, via which a positive and non-positive connection with a connecting part 23 of the driver 2 is enabled. Via this connecting part, the driver parts 21 and 22, initially present as individual parts on the guide rail 1, can be connected to one another and rigidly coupled to one another in order to provide the driver 2 on the guide rail 1. For example, each of the driver parts 21, 22 has a (lower) edge 210R or 220R and a positive-locking area 213 or 223 with an insertion opening in an area lying in the adjustment direction V2. An edge wrap-around web 232.1R or 232.2R of the connecting part 23 can be inserted onto a respective edge 210R or 220R. A respective edge wrap-around web 232.1R or 232.2R engages behind the respective associated edge 210R or 220R of a driver wing 21 or 22 when the connecting part 23 has been plugged onto the two driver wings 21, 22 already mounted on the guide rail 1. Furthermore, positive locking pins 233.1 and 233.2 of the connecting part 23 then engage in the insertion opening of the positive locking areas 213 and 223 of the two driver parts 21 and 22.

[0033] Furthermore, contact surfaces 214 and 224—shown here as circular—are formed on the driver parts 21 and 22 at a distance in the longitudinal direction L from the form-locking regions 213 and 223. These contact surfaces 214 and 224 are provided for the engagement of a respective associated contact section 234.1 or 234.2 of the connecting part 23. A respective connecting pin 214a or 224a formed centrally on a contact surface 214 or 224 can engage in a central connecting opening 234.1a or 234.2a of an associated contact section 234.1, 234.2 for the (additional) fixation of the connecting part 23 to the two driver parts 21 and 22.

[0034] If the connecting part 23 is as shown in the Fig. 1B is inserted as intended onto the two driver wings 21 and 22, the connecting part is fixed to the driver wings 21, 22 via the aforementioned sections 210R, 232.1R; 220R, 232.2R; 213, 233.1; 223, 233.2; 214a, 234.1a; 224a, 234.2a, which interact with one another in a form-fitting and force-fitting manner, and the two driver parts 21 and 22 are rigidly coupled to one another via the connecting part 23. The lateral sections of the one-piece connecting part 23 forming the contact sections 234.1, 234.2 and the form-fitting pins 233.1, 233.2 are connected to one another via a rigid central section 230. The central section 230 thus connects the lateral sections of the connecting part 23 connected to the driver wings 21 and 22. In the properly assembled state of the driver 2, the central section 230 of the connecting part 23 consequently extends over a part of the base section 13 of the guide rail 1.

[0035] In order to support the window pane F to be adjusted with the driver 2 at its lower edge in the adjustment direction V2, window support sections 235.1 and 235.2 are provided on the connecting part 23. Thus, in the assembled state of the driver 2, the connecting part 23 not only connects the two driver wings 21 and 22 and secures them relative to each other. Rather, in the assembled state of the driver 2, the connecting part 23 also serves to support the window pane F and connect it to the driver 2.

[0036] The carrier wings 21 and 22, which are slidably guided on the longitudinal guide profiles of sections 11 and 12 of the guide rail 1, also provide the connection to the cable pull 4 of the single-strand vehicle window lifter. Fig. 1A shows a nipple chamber 2100 for attaching a cable nipple of the cable pull 4 to one of the driving wings 21. This nipple chamber 2100 is closed by the connecting part 23 fixed to the driving wings 21, 22. The cable pull 4 can thus be coupled to the driving wings 21 and 22 for the subsequent transmission of an adjusting force for raising or lowering the window pane 1—without the connecting part 23 being fixed to the driving wings 21 and 22. Only after the cable pull 4 has been connected to the driving wings 21, 22 is the connecting part 23 fixed to the driving wings 21 and 22.

[0037] In the adjustment direction V2, a stop 212 or 222 protrudes from the driver bodies 210, 220 of the driver wings 21, 21. In interaction with a counter element of the vehicle window lifter, e.g., provided on the guide rail 1 or the support component A, these stops 212 and 222 limit the adjustment path of the window pane F to be lowered. For any damping of the adjustment movement before reaching a maximum lowered adjustment position of the window pane F, the stops 212, 222 can be made of an elastically compressible and thus damping material.

[0038] The flow chart of the Fig. 3 illustrates once again the procedure already explained above when mounting the at least three-part driver 2 to the guide rail 1 with its sections 11 and 12, on each of which a guide profile with a Z-shaped cross section is embossed.

[0039] In a first step, one of the driver wings 21, 22 is attached as the “first driver part” either from the right or left to the respective associated guide profile - in the design variant of the Fig. 1A and Fig. 1B by pivoting the respective driver wing 21 or 22 - mounted on the guide rail 1. In a subsequent second step S2, the respective other driver wing 22 or 21 is mounted as a "second driver part" from the other direction and thus either from the left or right to the respective other guide profile, in the design variant of the Fig. 1A and Fig. 1B, by way of example, again by pivoting it onto the guide rail 1. Subsequently, the first and second carrier wings 21, 22 are then connected and rigidly coupled in a step S3. For this purpose, the connecting part 3 is attached to the first and second carrier wings 21, 22 - possibly without tools - perpendicular to the longitudinal direction L and perpendicular to the transverse mounting directions along which the carrier wings 21 and 22 were attached to the guide rail 1 (in the Fig. 1A and Fig. 1B (i.e., from the front) and fixed to both driver wings 21 and 22. Subsequently, the assembled driver 2 is held and displaceably guided on the guide rail 1 without the need to slide it on from one longitudinal end of the guide rail 1 on both longitudinal guide profiles of the guide rail 1, whereby the driver 2 can be connected to the window pane F at the connecting part 23.

[0040] In deviation from the illustrated embodiment, in another embodiment of the proposed solution, it can be provided that a connecting part is formed on one of the driver wings 21, 22 and is thus an integral part of one of the driver wings 21, 22. One driver wing 21 or 22 is first mounted to the guide profile provided for it. By mounting the other driver wing 22 or 21 to the other guide profile provided for it, the first and second driver wings 21 and 22 are then rigidly coupled to one another via the connecting part. For example, the connecting part formed on one of the driver wings 21 or 22 forms locking openings or locking lugs for this purpose, which lock into corresponding locking openings or locking lugs on the other driver wing 22 or 21 when the further driver wing 22 or 21 is mounted on the guide rail 1, in particular is pivoted onto it. List of reference symbols 1 guide rail 11 Section with first leadership profile 12 Section with second guide profile 13 Base section 2 drivers 21 First driver wing (driver part) 210 driver body 2100 nipple chamber 210R edge 211 First guide section 212 Damper element / stop 213 Form-fitting area 214 contact surface 214a connecting pin 22 Second driver wing (driver part) 220 driver body 220R edge 221 Second guide section 222 Damper element / stop 223 Form-fitting area 224 contact surface 224a connecting pin 23 Connecting part 230 middle section 232.1R, 232.2R edge grip bar 233.1, 233.2 positive locking pins 234.1, 234.2 Contact section 234.1a, 234.2a connecting opening 235.1, 235.2 Window support sections 3 Drive unit 4 cable pull A support component F window pane L longitudinal direction S1, S2 swivel direction T vehicle door V1, V2 adjustment direction

Claims

[1] Driver for a vehicle window lifter, wherein the driver (2) is provided for displaceable mounting on a guide rail (1) in order to adjust a window pane (F), characterized by that the driver (2) comprises a first driver part (21), a second driver part (22) and a connecting part (23), wherein - the first driver part (21) is formed with a first guide section (211) and can be mounted on a first section (11) of the guide rail (1) formed with a first guide profile, - the second driver part (22) is formed with a second guide section (221) and can be mounted on a second section (12) of the guide rail (1) formed with a second guide profile and - the connecting part (23) is provided for fixing the first and second driver parts (21, 22) to one another in order to connect the first and second driver parts (21, 22) to one another after their assembly (21, 22) on the guide profiles of one guide rail (1). [2] Driver according to claim 1, characterized by that the first and second driver parts (21, 22) can be mounted on the guide rail (1) separately from one another and independently of one another before being mounted on the guide rail (1). [3] Driver according to claim 1 or 2, characterized byin that the first driver part (21), in the case of a guide rail (1) extending along a longitudinal direction (L), is designed and provided for mounting on the first guide profile transversely to the longitudinal direction (L), and / or the second driver part (22), in the case of a guide rail (1) extending along a longitudinal direction (L), is designed and provided for mounting on the second guide profile transversely to the longitudinal direction (L). [4] Driver according to claim 3, characterized bythat the first driver part (21) is designed and provided for mounting on the first guide profile, in which the first driver part (21) is fixed to the first guide profile by pivoting the first driver part (21) about a spatial axis parallel to the longitudinal direction (L), and / or the second driver part (22) is designed and provided for mounting on the second guide profile, in which the second driver part (22) is fixed to the second guide profile by pivoting the second driver part (22) about a spatial axis parallel to the longitudinal direction (L). [5] Driver according to claim 3 or 4, characterized bythat the first and second driver parts (21, 22) are provided for mounting on different, first and second longitudinal sides of a guide rail (1), in which the first guide profile is formed on a first longitudinal edge of the first longitudinal side of the guide rail (1) and the second guide profile is formed on a second longitudinal edge of the second longitudinal side of the guide rail (1). [6] Driver according to one of the preceding claims, characterized by that the first guide section (211) is designed and provided for displaceably supporting the first driver part (11) on the guide rail (1) for at least partially encompassing a longitudinal edge of the first guide profile and / or the second guide section (212) is designed and provided for displaceably supporting the second driver part (12) on the guide rail (1) for at least partially encompassing a longitudinal edge of the second guide profile. [7] Driver according to one of the preceding claims, characterized by that the first driver part (21) and / or the second driver part (22) defines a stop (212, 222) which, in cooperation with a counter element, is provided for specifying a maximum lowered adjustment position of the window pane (F). [8] Driver according to one of the preceding claims, characterized by that the connecting part (23) is a separate component, so that the driver (2) is designed in at least three parts, and the connecting part (23) is provided for fixing to the first driver part (21) and to the second driver part (22) after the assembly (21, 22) of the first and second driver parts (21, 22) to the guide profiles of one guide rail (1). [9] Driver according to one of the preceding claims, characterized bythat the connecting part (23) can be connected in a form-fitting and / or force-fitting manner to the first driver part (21) and / or to the second driver part (22). [10] Driver according to claim 9, characterized by that the connecting part (23) can be plugged onto the first driver part (21) and / or the second driver part (22). [11] Driver according to claim 9 or 10, characterized by that sections (210R, 232.1R; 220R, 232.2R; 213, 233.1; 223, 233.2; 214a, 234.1a; 224a, 234.2a) are formed on the first driver part (21) and the connecting part (23) and / or on the second driver part (22) and the connecting part (23). [12] Driver according to one of the preceding claims, characterized by that the connecting part (23) has at least one support section (235.1, 235.2) which is provided for supporting a lower edge of the window pane (F) to be adjusted with the driver (2). [13] Single-strand vehicle window lifter, with a guide rail (1) and a driver (2) displaceably mounted on the guide rail (1) according to one of the preceding claims. [14] Method for mounting a driver (2) for a vehicle window lifter to a guide rail (1) of the vehicle window lifter, the method comprising at least the following steps: - Providing an at least three-part driver (2) comprising a first driver part (21), a second driver part (22) and a connecting part (23), - Mounting the first driver part (21) to a first section (11) of the guide rail (1) formed with a first guide profile, - Mounting the second driver part (21) to a second section (12) of the guide rail (1) formed with a second guide profile and - fixing the first and second driver parts (21, 22) to one another via the connecting part (23) in order to connect the first and second driver parts (21, 22) already mounted on the guide rail (1) to one another. [15] Method according to claim 14, characterized by , that - the guide rail (1) extends along a longitudinal direction (L), - the first driver part (21) is fixed to the first guide profile, which is formed on a first longitudinal side of the guide rail (1), by pivoting the first driver part (21) about a spatial axis parallel to the longitudinal direction (L), - the second driver part (22) is fixed to the second guide profile, which is formed on an opposite second longitudinal side of the guide rail (1), by pivoting the second driver part (22) about a spatial axis parallel to the longitudinal direction (L), and - the connecting part (23) is attached and fixed to the first and second driver parts (21, 22) already mounted on the guide rail (1). [16] Use of an at least two-part driver according to one of claims 1 to 12 for a single-strand vehicle window lifter.

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