GB2468405A

GB2468405A - Vehicle window pane adjustment system

Info

Publication number: GB2468405A
Application number: GB1003548A
Authority: GB
Inventors: Manuel Stotz
Original assignee: Kuester Holding GmbH
Current assignee: Kuester Holding GmbH
Priority date: 2009-03-03
Filing date: 2010-03-03
Publication date: 2010-09-08
Anticipated expiration: 2030-03-03
Also published as: GB201003548D0; DE102009011120B4; GB2468405B; DE102009011120A1

Abstract

An entrainer for connecting a window pane with a window lifter of a vehicle comprises a base body 2 movable along a guide, such as a cable pulling system, and a window pane holder 3. In order to be able to tip the window pane in the mounted state of the entrainer at a vehicle door in a direction transverse to the vehicle longitudinal axis so as to provide compensation for tolerances and an accurately fitting closing of the pane, the body 2 in the mounted state of the window entrainer is tilted and/or adjustable relative to the guide in vehicle transverse direction by way of an adjusting means such as an adjusting screw 4. The adjusting screw 4 is effective to change the spacing of the body 2 from the guide by way of a slide element (5, fig.3) which is slidable on the guide and displaceable relative to the body and, in particular, relative to a second fixed slide element (6, fig.2) providing a fulcrum in which to tilt the window pane. The adjustment screw may be accessible externally by means of a screwdriver (10, fig. 3) engaging a bevel gear toothing (11, fig-3).

Description

VEHICLE WINDOW PANE ADJUSTMENT SYSTEM

The present invention relates to an entrainer for connecting a window pane with a vehicle window lifter and to assemblies incorporating such a lifter.

In the case of frameless doors for motor vehicles, i.e. in the case of doors in which no frame for the window pane is present and the door pane runs in a seal at the bodywork, such as particularly with cabriolets and the like, substantial tolerances can on occasion arise. Thus, mounting and production tolerances can have the consequence that the pane, particularly in closed setting, either stands off from the door seal with formation of a gap or, however, is pressed so strongly against the door seal that heavy running and increased wear arise. From time to time it is therefore necessary to tip the window pane, in the mounted state at the motor vehicle door, in a direction transverse to the vehicle longitudinal axis in order to enable tolerance compensation with secure, accurately fitting closing of the pane.

For this purpose adjustment is carried out at a pane holder. The pane holder is retained at an entrainer movable upwardly and downwardly at a rail by a cable pull of the window lifter drive. The entrainer forms the transmission element between window lifter drive and pane.

The pane holder has a slot-like receptacle for insertion of the window pane and is tiltable transversely to the vehicle longitudinal direction by means of an adjusting screw supported at the entrainer. In the past the adjustment could be undertaken only with inner cladding of the vehicle door removed, for example adjustment by means of a screwdriver or the like.

An entrainer of the kind stated in the introduction is known from DE 10 2005 040 459 Al.

In that case the entrainer comprises a base body movable along a guide rail and a pane holder, which is pivotably arranged at the base body, for receiving the window pane.

Setting of the window pane is carried out by way of a pivoting or tipping movement of the pane holder in the manner of an eccentric adjustment by way of a crank-like setting element.

Moreover, a so-called track window lifter is known from DE 102 46 159 Al. In this case the tipping movement of the pane takes place by adjustment at the pane holder by means of an adjusting screw.

Finally, an entrainer for a motor vehicle window with a pane holder for a vehicle side pane is known from DE 103 31 005 Al, wherein the pane holder is adjustable relative to a base body of the entrainer. In this case the base body is connected with a guide device.

The known adjusting devices have proved themselves in practice, but, due to the required adjustment travel for the pane holder, demand a considerable amount of constructional space, particularly for installation in a driver or passenger door. Accordingly, the known adjusting devices are mostly used in so-called rear window lifters in the rearward bodywork region and coupes and/or cabriolets.

A further disadvantage of this setting device is the relatively complicated construction and the multiplicity of required components, as a result of which corresponding production costs arise.

There is therefore a need to reduce the number of components, as well as a need for space, in the case of an entrainer for connecting a window pane with a vehicle window lifting device.

According to the present invention there is provided an entrainer for connecting a window pane with a window lifting device for a motor vehicle, comprising a base body, which can be movable along a guide device, for example a guide rail, with a pane holder, which is arranged thereat, for the window pane, wherein the base body in mounting setting of the window lifting device at the motor vehicle is tippable and/or adjustable relative to the guide device in vehicle transverse direction by way of an adjusting means.

The pane holder has, for example, two opposite clamping jaws with which a U-shaped receptacle for the window pane is connected. Fastening of the window pane to the pane holder or the entrainer can be carried out, for example, by a fastening screw or the like extending through an opening in the window pane.

A force transmission element such as, for example, a cable pull can engage the entrainer or its base body. In the case of a cable pull so-called nipple chambers, in which the ends of the cable pulls provided with end members -particularly nipples -are received, can be provided at the entrainer or its base body.

The cable pulls can be guided or deflected in the form of a horizontal eight and wound by their ends, which are opposite the entrainer, around a cable drum which in the case of an electric window lifter is driven by a transmission motor, but otherwise by a hand crank. An upward and downward movement of the entrainer at the associated guide rail is produced by the rotary movement of the cable drum.

In the case of vehicles with so-called frameless doors, in order to ensure the necessary stability and contact quality of the window pane two guide devices, particularly guide rails, arranged at a lateral spacing from one another are usually provided, wherein a respective entrainer slides at each guide rail.

The requisite adjustment and thus a corresponding inclination or a corresponding pivot movement of the window pane about a rotational axis typically extending parallel to the vehicle longitudinal direction is achieved by a tipping and/or pivoting movement of the base body relative to the guide device.

Due to the fact that the base body in mounted position of the window lifting device at the vehicle is tippable and/or adjustable in vehicle transverse direction relative to the associated guide device or the associated guide rail, which defines a guide path, the space requirement for the setting device is considerably reduced by comparison with known entrainers with base bodies non-tippable relative to the guide rail, but pane mounting adjustable relative to the base body, for the same adjustment range. Beyond that, the number of components is reduced, which is reflected in the costs of the sethng device of the entrainer.

The setting of the inclination of the pane by way of the pivoting or tipping movement of the base body relative to the guide device preferably takes place about an axis approximately parallel to the vehicle longitudinal axis, so that the pane is deflected in a direction transverse to the vehicle longitudinal axis. The pane can thus be adjusted in the mounted state without the inner cladding or panelling of the vehicle door having to be removed, thus without dismantling of the door.

According to a preferred embodiment the base body has at least two slide elements, which are arranged at a spacing from one another, for sliding along the guide device, wherein the slide elements are adjustable relative to one another in vehicle transverse direction.

These slide elements can have a slide contour matched to a contour of the guide rail or -in the case of a so-called track lifter with guides constructed in a sheet metal track as, for example, slots -matched thereto. A setting of the inclination of the window pane can be achieved in simple manner by adjusting the slide elements relative to one another or relative to the base body.

The setting device is in that case usually associated with the so-called B entrainer of the vehicle, i.e. associated with the entrainer which is closest to the B post of the vehicle bodywork.

It is particularly advantageous in terms of construction and assembly if at least one of the slide elements is mounted on the base body to be displaceable in vehicle transverse direction and is actuable by the adjusting means.

It is then particularly advantageous in terms of construction if the at least one slide element is displaceably guided in a receptacle at the base body so that rattling noises due to uneven road surfaces are avoided. By virtue of the guidance of the slide element in a receptacle at the base body it is also ensured that the slide element is not tilted in the base body during the adjusting movement, so that a service-friendly, easy-motion adjustment is achieved.

Targeted in the same direction is the measure, in a preferred embodiment, of displaceably guiding the at least one slide element in the receptacle of the base body by means of groove/web guides. In that case it is recommended to provide the slide element on one side thereof with a groove and on the other side with a web, which engage in corresponding form in the receptacle of the base body.

Since the at least one slide element is a separate part relative to the base body it is also possible to make only the slide element from a material with a relatively low coefficient of friction, particularly plastics material such as, for example, polyoxymethylene. A costly treatment of the said base body of the entrainer for improvement of the slide characteristics is no longer required.

In terms of production it is recommendable for the at least one slide element to be of two-part construction with a base part, consisting of, for example, favourably priced material, and a slide part, which is connectible therewith -for example by way of a connection -and slides at the guide element, the slide part consisting of a material with low coefficient of friction.

In that case it can be recommended to produce the at least one slide element, consisting of base and slide parts, as a two-component element in an injection-moulding method.

According to a further embodiment the adjusting means forms part of a deflecting transmission, for example co-operates with drive means to define therewith a non-linearly acting or angled drive transmission system. By way of this measure it is possible for the adjusting means to be adjustable by way of a tool which engages the adjusting means otherwise than in the direction of the longitudinal axis thereof, for example a rotational axis if the adjusting means has the form of an adjusting screw. The tool can, for example, be inserted into the shaft or well, which is provided for the window pane, of a vehicle door, thus substantially parallel to the pane surface, wherein the tool comes into engagement with the adjusting means for tipping or pivoting the base body relative to the guide rail or the guide device of the window lifter. Adjustment of the adjusting means can then also be produced through rotation of the tool so that by way of the tipping movement of the base body the angle of the pane transversely to the vehicle longitudinal axis can be set. The rotational axis of the tool and the rotational axis of the adjusting means are preferably substantially perpendicular to one another.

Alternatively or additionally to adjustment of the tool in the shaft of the vehicle door it is also possible for the tool to be introducible in the direction of the vehicle longitudinal axis through a bore or opening in the front or rear wall of the vehicle door in order to actuate the adjusting means.

Advantageously, an actuating section or drive input means of the adjusting means has a toothing, especially in the form of a bevel gear. As a result, a sensitive, graduated adjustment of the adjusting means by way of the correspondingly constructed tool is achieved, which tool engages a toothing of the actuating section of the adjusting means.

It has proved particularly advantageous if the actuating section of the adjusting means has a torx' toothing, i.e. star or hexalobular tooth pattern.

In that case, for preference the stated part of the deflecting transmission is arranged in the region of the frontal free end section of the adjusting means, particularly at the head of an adjusting screw, so that the tool comes into engagement with a toothing in the setting-side region of the head of the adjusting means.

According to a further preferred embodiment the adjusting means comprises a fixing screw which extends by a shank part thereof in a given displacement direction of a movable one of the slide elements and is axially secured to the base body, which adjusting screw engages by a shank end thereof in a threaded bore of that slide element. The adjusting screw is axially fixed to the entrainer or base body. Through rotation of the adjusting screw, it screws into or out of the threaded bore, whereby a displacement of the base body relative to the guide device of the window lifter and thus a tipping movement of the entrainer together with pane holder and pane is produced. The range of adjustment in that case is, starting from a centre position � 4 mm, preferably � 2 mm and, with particular preference � 1 mm. By virtue of the relatively large spacing of adjustable base body from the upper edge of the window pane in the closed setting thereof a small adjusting travel of the adjusting means is sufficient in order to be able to set an accurately fitting closing of the window pane against the door seal.

For preference the threads of the adjusting screw and of the slide element are executed with a fine pitch. By virtue of the fine thread pitch a more accurate setting of the window pane is thus possible and, due to the self-locking of the fine thread, fixing of the set position is not required.

Preferably, the adjusting screw extends through an opening in the base body and is axially secured to the base body by means of a securing element on one side of the opening and a collar, which is formed at the adjusting screw, on the other side of the opening. The collar, which lies in the region of the edge of the opening, is preferably formed at the underside of the screw head.

In a particularly simple construction the securing element can engage in an insertion groove, particularly an annular groove, of the adjusting screw and in that case be retained in a receptacle of the base body.

The securing element can be constructed as, for example, a flat, resilient metal plate member with two limbs. In that case, part circular recesses, which together partly bound a circular receptacle for the insertion groove or annular groove at the adjusting screw, are provided at the mutually opposite inner edges of the limbs. The free ends of the limbs are radiussed so as to facilitate introduction of the securing element into the insertion groove or annular groove. In addition, the securing element can have, at the foot of the limbs, a recess, particularly a trapezium-shaped recess, which ensures resilient mobility of the limbs relative to the base connecting them or the transverse web thereof. In addition, a flanged edging of the securing element can be provided at the transverse web or at the base in order to improve the rigidity of the securing element and to also provide an engagement point for withdrawal of the securing element from the securing setting at the adjusting screw, for example by way of a hook-shaped tool.

It is of particular advantage to form at the base body a tool insertion channel, particularly a tool introduction channel, which opens in the region of the stated part of the deflecting transmission of the adjusting means. This insertion channel for the tool, for example a screwdriver, serves as introducing and positioning aid for the tool in order to actuate the setting means.

In terms of assembly it is particularly advantageous if the adjusting screw has, preferably centrally of its screw head, a toothing, for example an internal torx' or star toothing, wherein the toothing, which co-operates with the tool for tipping or pivoting the base body, can be arranged as a rim gear coaxially with the internal toothing, preferably at a collar of the adjusting screw. The adjusting screw thus has two drive profiles or toothings for engagement of a tool. Provided in the centre of the screw head is, for example, a conventional star or cross-slotted engaging point. The adjusting screw is screwed with use of this into the threaded bore of the slide element during pre-assembly. The rim gear can similarly be constructed as a toroidal toothing engageable with a corresponding counter-section or actuating section of the adjusting tool for later adjustment of the screw.

The invention also relates to a tool in combination with an entrainer according to the invention, wherein the tool can be constructed as a screwdriver and have a deflecting transmission part corresponding with the stated part of the deflecting transmission of the adjusting means. The two parts of the deflecting transmission of the tool or of the setting means complete the deflecting transmission so that the adjusting means can also be actuated or adjusted by an angular engagement of the tool. For preference the rotational axis of the tool and the rotational axis of the adjusting means are substantially perpendicular to one another.

For preference, an actuating section of the tool or screwdriver has a toothing, particularly in the form of a bevel gear. This toothing corresponds with the toothing of the setting means.

The tool is preferably suitable and constructed for the purpose of being introducible through the door shaft or well into the insertion channel or the introducing channel in order to engage, by means of the toothing, in the toothing of the adjusting means.

Embodiments of the present invention will now be more particularly described by way of example with reference to the accompanying drawings, in which: Fig. 1 is a front view of an entrainer embodying the invention, together with a tool for adjusting the entrainer; Fig. 2 is a perspective back view of the entrainer; Fig. 3 is an exploded perspective view of the entrainer; Fig. 4 is a further perspective view of the entrainer; Fig. 5 is a view of the entrainer obliquely from below, with a slide element of the entrainer in an end position; and Fig. 6 is a view similar to Fig. 5, but with the slide element in an opposite end position.

Referring now to the drawings, there is shown an entrainer I intended for a window lifter such as employed in a door of motor vehicle. The window lifter can be of the kind known as track window lifter, such as described in DE 103 46 159 Al, or of the kind known as double-rail window lifter, such as indicated in DE 10 2004 027 253 Al.

The entrainer 1 basically consists of a base body 2 and a pane holder 3 preferably fixedly connected therewith.

The entrainer I engages by means of slide elements 5 and 6 in slot-shaped guides (not illustrated) in the case of a track window lifter or in guide rails, which are separately arranged in a vehicle door or at an assembly carrier, of a double-rail window lifter, the guide rails or guides defining a guide path.

A cable pull (not illustrated) engages the entrainer 1, the cable pull being windable on and unwindable from a cable drum by means of an electrical or mechanical drive (similarly not illustrated) and in that case moving the entrainer 1 along the guides for opening and closing a window pane held by the pane holder 3. Provided in the entrainer 1 for articulation of the cable ends of the cable pull are so-called nipple chambers 27 into which nipples at the cable ends are inserted.

The pane holder 3 has two opposite clamping jaws which form an insertion slot for insertion of the window pane. Fixing of the window pane is effected by way of a fastening means, for example a bolt, which extends by its shank through an opening 30 at one clamping jaw and through a corresponding opening in the pane into a threaded bore of the other clamping jaw.

Tipping of the pane in a direction transverse to the vehicle longitudinal axis, or the plane of the pane relative to the guide path, for the purpose of setting the pane is carried out in that one of the slide elements 5 and 6 is guided in a receptacle 7 at the base body 2 to be displaceable substantially in vehicle transverse direction, wherein an adjusting means in the form of an adjusting screw 4 actuates the slide element 5. Through displacement of the slide element 5, which engages the guides or guide rails of the window lifter, in vehicle transverse direction with the second slide element 6 stationary a tipping or pivoting movement of the base body 2 relative to the guide rails fixed to the door and thus a change in the inclination of the pane, or plane of the pane, connected with the base body 2 by way of the pane holder 3 takes place.

As apparent particularly from Figs. 3 to 6 the adjusting screw 4 of the adjusting device extends by its shank part 12 through an opening 14 of a housing section of the base body 2 and via an opening 32 of an intermediate wall 31 of the receptacle 7 into a threaded bore 13 of the slide element 5.

The adjusting screw 4 is axially secured in place in that on one side of the opening 14 a securing element 15 engages in an annular groove 17 in the shank part of the adjusting screw, whilst on the opposite side of the opening 14 a collar 16, which is formed below the screw head, bears against the edge of the opening. The securing element 15 is inserted into a receptacle 18 of the base body 2.

As apparent particularly from Figs. 3 and 4, in the embodiment shown here the securing element 15 is formed as a flat, resilient sheet metal member with two limbs 34 connected together by a base part or a transverse web 35. Provided at each of the opposite inner edges of the limbs 34 is a respective recess 36 in the shape of a segment or chord of a circle, wherein the recesses 36 of the two limbs 34 complement one another to define a circular receptacle for the groove 17 of the adjusting screw 4. In addition, the free limb ends 37 are radiused so as to facilitate introduction of the securing element 15 into the groove 17. A trapezium-shaped recess 38 is formed at the limb foot adjoining the base part or the transverse web 35 so that the resilient mobility of the limbs 34 is improved. In addition, a flanged edging 39 is provided at the web 35 in order to improve the rigidity of the securing element 15 and to provide an engagement surface for withdrawal of the securing element 15 from the securing setting at the adjusting screw 4, for example by way of a hook-shaped tool.

The adjusting screw 4 has at its head two drive profiles or toothings for engagement of tools. Disposed in the centre of the screw head in the case of the illustrated embodiment is an internal torx' or star toothing 20 which at the time of pre-assembly is used for turning the adjusting screw 4 in the threaded bore 13 of the slide element 5. Formed at the encircling collar 16 is a rim gear, preferably also with a star toothing. An adjusting tool, preferably a screwdriver 10, with a counter-toothing of conical form arranged at its actuating portion 26 engages in this toothing 11. The rim gear 11 is preferably formed at the collar 16, which bears against the edge of the opening 14, on the side of the collar opposite the opening 14.

The slide element 5 displaceable in vehicle transverse direction has a groove 8 on its slide surface and a web 9 on the opposite slide surface, which groove and web engage complementary grooves 8 and webs 9 at the associated slide surfaces of the receptacle 7 of the base body.

The slide element 5 preferably consists, at least in the case of its section sliding on the guide rail or the guide device, of a material with low coefficient of friction such as, for example, polyoxymethylene (POM).

An introducing channel 19 which opens in the region of the adjusting screw 4 is provided at the base body 2 for the adjusting tool 10 or the screwdriver.

The mode of function of the entrainer 1 with adjusting device for tipping the pane in a direction transverse to the vehicle longitudinal axis is as follows: Initially the window lifter or the window lifter module together with pane is mounted in the vehicle door. In this mounted setting the adjusting screw 4 is already axially secured to the base body 2 and the threaded section at the shank part 12 engages in the threaded bore 13 of the slide element 5.

In order to tip the window pane, in the mounted state of the entrainer at the motor vehicle door, in the direction transverse to the vehicle longitudinal axis for the purpose of tolerance compensation with precisely fitting closing of the pane, the tool 10 is, for actuation of the adjusting screw 4, inserted into the shaft or well of the vehicle door. Even with the inner cladding or door panel in place, the tool 10 in that case enters, via the introduction channel 19 of the base body 2, into engagement -by its actuating portion 26 -with the rim gear 11 of the adjusting screw 4. Thus, the conical toothing 26 formed at the free end of the tool engages the rim gear 11 at the collar 16 of the adjusting screw.

This angle transmission formed by the tool 10 with actuating portion 26 and by the rim gear 11 of the adjusting screw 4 leads, on rotary movement of the tool 10, to a rotary movement of the axially secured adjusting screw 4. The slide element 5 is thereby screwed on the thread of the shank 12 of the screw 4 in correspondence with the rotational direction so that the spacing between base body 2 and guide rail or guide sections reduces in vehicle transverse direction. In the case of an opposite rotary movement of the adjusting screw 4 the slide element 5 displaces in the direction of the guide rail or guide section of the window lifter, whereby the spacing between the base body 2 and guide rail or guide section increases. Since the upper (in this embodiment) slide element 6, in the mounting setting is fixedly held at the base body 2 a pivoting or tipping movement of the base body 2 arIses and thus, by way of the pane holder 3, a change in the inclination of the window pane with respect to the door seal.

Claims

CLAIMS1. An entrainer for connecting a window pane with a window lifter mountable in a vehicle, comprising a base body which in use of the entrainer is movable along guide means, a pane holder for holding a pane, the holder being arranged at the base body, and adjusting means by which the base body in the mounted state of the window lifter in a vehicle is tippable and/or adjustable relative to the guide means in a direction transversely of the vehicle.
2. An entrainer as claimed in claim 1, wherein the base body is provided with two spaced-apart slide elements for sliding movement along a guide rail of the guide means, the slide elements being adjustable relative to one another in said direction.
3. An entrainer as claimed in claim 2, wherein at least one of the slide elements is mounted on the base body to be displaceable in said direction and the adjusting means is actuable to produce said displacement of the at least one slide element.
4. An entrainer as claimed in claim 3, wherein the at least one slide element is displaceably guided in a receptacle at the base body.
5. An entrairier as claimed in claim 4, wherein the at least one slide element is displaceably guided in the receptacle by interengaging projections and grooves.
6. An entrainer as claimed in any one of claims 3 to 5, wherein the at least one slide element comprises a material with a low coefficient of friction.
7. An entrainer as claimed in claim 6, wherein the material is a plastics material.
8. An entrainer as claimed in claim 7, wherein the plastics material is polyoxymethylene.
9. An entrainer as claimed in any one of claims 3 to 8, wherein the at least one slide element comprises a base member and a slide member which is connected with the base member and is movable along the rail.
10. An entrainer as claimed in claim 9, wherein the slide member is connected with the base member by way of a connecting clip.
11. An entrainer as claimed in claim 9, wherein the base member and slide member are produced by multi-component injection moulding.
12. An entrainer as claimed in any one of the preceding claims, wherein the adjusting means comprises drive input means drivable by external drive means and co-operable therewith to define a non-linearly acting drive transmission for the tipping and/or displacing of the base body.
13. An entrainer as claimed in claim 12, wherein the drive means comprises a tool and the drive input means is arranged so that in use the tool can be disposed to extend substantially parallel to a surface of a pane held by the holder.
14. An entrainer as claimed in claim 12 or claim 13, wherein the drive input means comprises a toothing.
15. An entrainer as claimed in claim 14, wherein the toothing has the form of a bevel gear.
16. An entrainer as claimed in any one of claims 12 to 15, wherein the drive input means is arranged at a free end of the adjusting means.
17. An entrainer as claimed in claim 16, wherein the adjusting means comprises an adjusting screw and the free end is a head of the screw.
18. An entrainer as claimed in any one of claims 3 to 11, wherein the adjusting member comprises an adjusting screw having a shank which extends in a given direction of displacement of the at least one slide element and is axially secured to the base body, the shank being threadedly engaged at an end portion thereof in a threaded bore in the at least one slide element.
19. An entrainer as claimed in claim 18, wherein the adjusting screw extends through a passage in the base body and is axially secured to the base body by a securing element at one end of the passage and a collar at the other end of the passage, the collar being formed on the screw.
20. An entrainer as claimed in claim 19, wherein the securing element is engaged in a groove in the screw and retained in a receptacle at the base body.
21. An entrainer as claimed in claim 20, wherein the groove in the screw is an annular groove.
22. An entrainer as claimed in any one of claims 12 to 17, wherein the base body is provided with guide channel for the drive means, the channel being arranged to guide the drive means to the drive input means of the adjusting means.
23. An entrainer as claimed in claim 22 when appended to claim 13, wherein the guide channel defines an insertion channel for the tool.
24. An entrainer as claimed in claim 14, wherein the adjusting means has a further toothing for driving of the adjusting means, the first-mentioned toothing being arranged concentrically around the further toothing.
25. An entrainer as claimed in claim 24, wherein the first-mentioned toothing is a rim gear.
26. An entrainer as claimed in claim 24 or claim 25, wherein the adjusting means is an adjusting screw with a screw head and the further toothing is arranged centrally in the head.
27. An entrainer as claimed in claim 26, wherein the further toothing is an internal star toothing.
28. An entrainer and tool assembly, wherein the entrainer of the assembly is as claimed in any one of claims 12 to 17 or 24 to 27 and wherein the tool of the assembly provides the external drive means and has the form of a screwdriver with an actuating section co-operable with the drive input means of the adjusting means.
29. An assembly as claimed in claim 28, wherein the actuating section comprises a toothing.
30. An assembly as claimed in claim 29, wherein the toothing of the actuating section has the form of a bevel gear.
31. An assembly as claimed in any one of claims 28 to 30 when appended to claim 22 or claim 23, wherein the tool is constructed for insertion into the guide channel of the base body via a window pane well of a door of the vehicle.
32. A motor vehicle window lifter provided with an entrainer as claimed in any one of claims 1 to 27.
33. A motor vehicle window lifting assembly comprising guide means mountable in a vehicle door and defining a guide path and an entrainer which comprises a base member movable along the guide path, a pane holder arranged at the base body to hold a pane in a plane substantially parallel to the guide path, and adjusting means operable in the mounted state of the guide means and without dismantling of the door to so adjust the body relative to the guide means as to tip the plane of a held pane relative to the guide path.
34. An assembly as claimed in claim 33, wherein the entrainer is as claimed in any one of claims ito 27.
35. A glazed vehicle door fitted with an assembly as claimed in claim 33 or claim 34, the entrainer being substantially enclosed in the door apart from an opening for ingress and egress of a door glazing pane held by the pane holder of the entrainer.