EP1337732B1 - Window winding arm device for a motor vehicle - Google Patents

Description

The invention relates to an arm window lifter for a motor vehicle for lifting and Lowering a motor vehicle window pane according to the preamble of patent claim 1, which is characterized by a compact and weight-saving design and easy in a motor vehicle can be installed.

US-A-4930255 discloses all features of the preamble of claim 1.

From DE 196 50 265 C1 a Kreuzarmfensterheber is known whose drive arm fixed is connected to a toothed segment, in its geometric center in a Base plate mounted pivot axis is located. The drive arm is driven by a in the teeth of the gear segment engaging pinion, as output drive element a motor or manual drive is used. At a distance to the pivot axis of Zahnsegments is arranged a universal joint, over which the drive lever with a second lever, the guide arm, in articulation. The one ends of the Lever arms are connected with sliders, which in guide areas one at the lower edge the window pane mounted first guide rail substantially horizontally slidably store. The other end of the guide arm is along a second Guide rail, which is on the door body below the first guide rail is attached. As a result, when controlling the window lift, the control of the Guide arm with respect to the drive arm.

Disadvantageously, the window regulator construction described in terms of her Tolerance sensitivity, because the guide arm associated with the second, in the Door body mounted guide rail relatively accurately with respect to the pivot axis of the On the base plate mounted drive arm must be positioned to a precise To ensure disc extraction. In addition, the window lift has a high Material requirements and a correspondingly high weight.

A comparatively compact arm window lifter is described in DE 198 28 891 C1. Also this window has a base plate on which a drive arm with a Pivotally pivotally supports, as well as a guide arm, with the drive arm on a joint is pivotally connected. In contrast to the above-described construction the second, the door body assigned guide rail was replaced by a Toothed arch with internal teeth, into which one connected to the guide lever External toothing engages. In this case, the external teeth extending concentrically to Joint axis through which the two lever arms are connected. When lifting and Lowering the window pane, the control of the guide arm so on the Tooth arc, which extends concentrically to the pivot axis of the tooth segment, and the associated external toothing of the guide arm.

The disadvantage of this window is mainly in its large variety of parts, in particular with regard to the necessary gear elements, which also high Requirements for the adjustment of tolerances.

From DE 43 25 080 A1 an adjusting device for an arm window lifter is known, the attached to the disc-side end of the one arm. When operating this Setting device is the point of articulation of this lever arm with respect to the articulation point the other lever arm changed so that the position of the outer contour of the Window is aligned sufficiently precisely to the contour of the window frame. The disadvantage of this device is that the adjustment only in a relatively far lowered position of the window can be made, which is the setting difficult, since the result of the adjustment only after repeated closure of the Disc can be inspected and possibly corrected several times. In addition, the entire possibly necessary adjustment path in the Setting device to be kept.

Another possibility of setting a Kreuzarmfensterhebers shows DE 44 38 385 A1. For the purpose of adjustment, the disk-side end of the guide lever opposite end adjustable in a separate rail defined in the door stored. This adjustment is very space intensive.

The invention is therefore based on the object, a lightweight and compact To specify arm window, which is easy to install in a motor vehicle.

According to the invention, the object is achieved by an arm window lifter with the features of Patent claim 1 solved. The dependent claims give preferred variants of Invention.

Accordingly, the arm window lifter has a first lever arm mounted on a pivot axis is pivotally mounted and a second lever arm, which extends over one of the pivot axis spaced hinge axis is pivotally connected to the first lever arm, on. there is the first lever arm with a drive unit via an output element in Operatively connected. The second lever arm has a longer side and one of these opposite shorter side, in which a support axis is arranged, which in a Guideway is guided.

Preferably, the pivot axis, the drive unit and the output element are at one Base plate arranged, in which also the guideway is integrated. It will be advantageous the support shaft slidably guided in a sliding member in the guideway. The other ends of the lever arms are advantageously connected to a window pane. The Output element is carried out with advantage as a toothed segment, wherein a pinion of the Drive unit engages the toothing of the toothed segment.

The described, in the base plate integrated guide slot, preferably between the pivot axis of the toothed segment and the axis of rotation of the drive pinion extends, serves in cooperation with the supporting arm attached to the guide arm of the Control of the guide arm and thus the synchronization of the pivoting movements of two lever arms during operation of the window regulator. By the production a fixed connection between the drive arm and the output member, the executed by a toothed segment whose teeth are substantially points in the direction of the free end of the drive arm and by the use of a Tooth segment with a recess extending along its toothing, through which engages through the arranged at the short end of the guide arm support shaft is created a particularly compact and material and weight-saving construction, which also manages with a reduced number of items. As a result of Integration of all storage positions and management areas in one and the same base plate reduces the tolerance of tolerance of the arm window lifter significantly, which is beneficial to its wear and the precision of the disc take effect.

The distances between the hinge axis of the two lever arms and the support axis on the one hand, and between the hinge axis and the pivot axis on the other hand are with Advantage equal. When lifting and lowering the window moves the Joint axis over a limited vertical range, the hinge axis of the Longitudinal axis of the integrated guide slot approximately at half-open disc crosses.

According to a preferred variant of the invention, the longitudinal axis of the extends into the Base plate integrated guideway along an imaginary connecting line between the pivot axis of the toothed segment and the axis of rotation of the drive pinion, wherein the Joint axis of the two lever arms between the pivot axis and the toothing of the Zahnsegments lies. This is the prerequisite for the use of the Arm window lifter created in right and left vehicle doors, without a special Adaptation of parts to the respective application must be made.

It is advantageous for easier installation of the arm window regulator adjustment means for Adjusting the relative angular position between the drive arm and the guide arm in the Provide area of the support axis. Through the use of adjusting means, the respectively desired angular position between the lever arms are set and thus a As exact as possible adjustment of the window pane with respect to the window frame of a Motor vehicle door be made. This is for the leadership qualities and with regard to the closing behavior of the window pane of great importance, since a poor disc adjustment too strong friction and thus connected to increased Power requirement on the part of the drive as well as increased wear in the sealing area can lead.

It is advantageous to arrange the adjusting means at a distance from the hinge axis, the at the most the third part of the distance between the hinge axis and a connection of the Lever arms to a window corresponds.

According to a preferred embodiment of the invention, the guide arm on the Side of his short end of the lever, so in the area of the support axis on a Einstellkulisse, the with respect to the hinge axis, which articulates the guide arm with the drive arm connects, extending in the circumferential direction. This Einstellkulisse is from an axle passed through, which is associated with a fixing element, so that the relative position of the Guide arm with respect to the axle element and thus also with respect to the drive arm can be determined.

Along the Einstellkulisse provide transverse form-fitting elements with mating form-fitting elements of the fixing can be brought into engagement, for a Permanent fixation of the adjusted relative position between the lever arms. Preferably, the guide lever side interlocking elements, e.g. in form of a Gearing, integrated in the guide arm. Analog should the fixierseitigenseitigen Form-fitting elements in the bearing surface of a nut or the like may be integrated.

According to a further embodiment is in the guide arm in the region of the support axis incorporated a circular opening, which is penetrated by an axle. The Axle can with respect to a definable in different angular positions Base part be taken eccentrically. To the desired eccentric position too fix, the base part carries on its outer contour a toothing or the like, which can be inserted into the suitable receiving contour in a part of the adjusting device. Of course, the anti-rotation of the base part can also by other contours, e.g. by a polygonal design of the plug-in parts can be achieved. Furthermore But it can also be provided a clamping device, the desired position of the Determines base part frictionally.

Figur 1

perspektivische Explosivdarstellung des erfindungsgemässen Armfensterhebers mit in die Grundplatte integrierter Führungskulisse, die sich im wesentlichen entlang einer Verbindungslinie zwischen der Schwenkachse des Zahnsegments und der Drehachse des Antriebsritzels erstreckt;

Figur 2

perspektivische Explosivdarstellung eines Armfensterhebers mit in die Grundplatte integrierter Führungskulisse, die sich auf der der Drehachse des Antriebsritzels abgewandten Seite der Schwenkachse des Zahnsegments erstreckt; gehört nicht zur Erfindung

Figur 3

Querschnitt durch den Armfensterheber gemäss Figur 1 unter Weglassung der Hebelarme;

Figur 4

Ansicht eines sich in Schliessposition befindlichen Zweiarmfensterhebers in einer Türkarosserie;

Figur 5

Ansicht eines sich in völlig geöffneter Position befindlichen Zweiarmfensterhebers in einer Türkarosserie;

Figur 6

Ansicht eines Zweiarmfensterhebers mit in die Grundplatte integrierter Führungskulisse und Mitteln zur Einstellung des Fensterhebers im Bereich der am kurzen Hebelende des Führungshebels angeordneten Schwenkachse;

Figur 7

Gleiter zur Scheibenanbindung im Bereich der an den freien Enden angeordneten Führungsbolzen;

Figur 8

perspektivische Explosivdarstellung eines Ausschnitts des Fensterhebers im Bereich der Einstellmittel von der Seite der Hebelarme aus betrachtet, wobei das kurze Hebelende des Führungshebels im Bereich der Schwenkachse ein in Umfangsrichtung verlaufendes Langloch aufweist;

Figur 9

perspektivische Explosivdarstellung der Mittel zur Einstellung des Fensterhebers von der Seite der Grundplatte aus gesehen, jedoch ohne Grundplatte und Hebelarme;

Figur 10

perspektivische Explosivdarstellung eines Ausschnitts des Fensterhebers im Bereich der Einstellmittel von der Seite der Hebelarme aus betrachtet, wobei das kurze Hebelende des Führungshebels im Bereich der Schwenkachse ein Rundloch aufweist, in das ein exzentrisch gelagerter Bolzen eingreifen kann;

Figur 11

perspektivische Explosivdarstellung der Mittel zur Einstellung des Fensterhebers von der Seite der Grundplatte aus gesehen, jedoch ohne Grundplatte und Hebelarme.

The invention will be explained in more detail with reference to embodiments and the illustrated figures. Show it:

FIG. 1

perspective exploded view of the inventive arm window lifter with integrated into the base plate guide slot extending substantially along a connecting line between the pivot axis of the toothed segment and the axis of rotation of the drive pinion;

FIG. 2

perspective exploded view of an arm window lifter with integrated in the base plate guide slot extending on the side remote from the axis of rotation of the drive pinion side of the pivot axis of the toothed segment; does not belong to the invention

FIG. 3

Cross-section through the arm window lifter according to Figure 1 with omission of the lever arms;

FIG. 4

View of a two-arm window lifter in a closed position in a door body;

FIG. 5

View of a fully open position located two-arm window lifter in a door body;

FIG. 6

View of a two-arm window lifter with integrated in the base plate guide slot and means for adjusting the window regulator in the region of the short lever end of the guide lever pivot axis arranged;

FIG. 7

Glider for disk connection in the region of the arranged at the free ends guide pin;

FIG. 8

perspective exploded view of a section of the window in the region of the adjusting means viewed from the side of the lever arms, wherein the short lever end of the guide lever in the region of the pivot axis has a circumferentially extending slot;

FIG. 9

exploded perspective view of the means for adjusting the window regulator from the side of the base plate, but without base plate and lever arms;

FIG. 10

perspective exploded view of a section of the window in the region of the adjusting means viewed from the side of the lever arms, wherein the short lever end of the guide lever in the region of the pivot axis has a round hole into which an eccentrically mounted bolt can engage;

FIG. 11

perspective exploded view of the means for adjusting the window lifter as seen from the side of the base plate, but without base plate and lever arms.

The exploded view of Figure 1 shows made of sheet metal by stamping-embossing technique Lever arms 4, 5, of which the first lever arm 5 is formed as a drive arm and in Area of attachment points 30 and 50 formed with a toothed segment Output element 3 is firmly connected. In this case, a pot-shaped expression reaches through a provided in the form of a guide arm second lever arm 4 bearing opening 40, whereby a joint with the hinge axis 300 is formed between the lever arms 4, 5. The arrangement of the toothed segment 3 is chosen so that its toothing 320 in Direction of the free end of the drive arm 5, wherein the toothed segment arc 32 from Drive lever 5 is about halved.

The toothed segment 3 and thus also the drive arm 5 are in the bearing 10 of the base plate. 1 pivotally mounted via a rivet pin 101. According to the tooth circle diameter of the toothed segment 3 is in the base plate 1, a pivot bearing for supporting the axis of the Drive pinion 210 of the transmission 21, motor 20 and electronic control device 22 existing drive unit 2 is provided. The penetration of the segment toothing 320 on the teeth of the drive pinion 210 is by a in the base plate. 1 incorporated slot 13 ensured.

Furthermore, in the plane in which the axes 100 and 110 lie, one extends Guide slot 12 which receives a slider 121 slidably. The backup of the Slider 121 against withdrawal forces acting in the direction of the support shaft 120, carried by a fixing bolt 122 with disc 122a, as shown in Figure 3. Not one here shown guide pin 122 is the short side 420 of the lever arm 4 with the Slider 121 in conjunction. As a result, the usability of the window regulator in left and right doors guaranteed. On the other hand, if you shift the plane of the guidance 12 up or down, or leads this opposite the imaginary connection level of Axles 100 and 110 inclined, so are constructive adjustments of others, the Adjustment kinematics affecting parts necessary.

The operating principle of the arm window lifter of FIG. 2 is the same as in FIG. 1 identical. However, this arm window lifter is not an embodiment of the invention. It serves only for a better understanding of the invention. The two windows differ only in constructive details. Accordingly, according to FIG the hinge axis 300 of the two lever arms 4, 5 facing away from the toothing 320 Side of the pivot axis 100 of the toothed segment 3 shifts, which inevitably a Guide slot 12 in a lateral extension region of the base plate 1 requires. As a result, here passes through the support shaft 120 between the slider 121 and the short Page 420 of the lever arm 4, the opening 33 of the toothed segment not. If necessary, e.g. out For reasons of mechanical strength, the opening 33 of the segment 3 can be closed become.

From Figure 4, the position of the items of the arm window lifter in the closed position of Window pane visible. In this case, the slider 121 is in the right edge area of in the base plate 1 integrated guide slot 12 and the hinge axis 30, 300 reached their highest point. On the representation of the window pane connected Guide rail, in which with the guide pins 41, 51 of the lever arms 4, 5 slidably mounted gliders were omitted.

FIG. 5 shows the lowermost position of the window lifter, in which the articulation axis 30, 300 lies below the guide slot 12. When driving over the middle disc position, at of the lever arms 4, 5 are aligned substantially horizontally, the slider 121 passes in the guide slot 12 in its leftmost shifted position.

In Figure 6, the position of the individual parts of the arm window lifter in the closed position of Window, as shown in Figure 4, can be seen. In this case, the slider 121 is located in the left edge region of the integrated into the base plate 1 guide slot 12 and the Joint axis 300 reaches its highest point. For adjustment of the window lifter Installation are here in the support axis 120 additional adjustment provided, with where the relative angular position between the two lever arms 4, 5 are set can.

To a good and rattle-free guidance of the window pane in the not shown here To ensure guide rails, it should be a running slider 6, as shown in Figure 7 shown having resilient stops 61, which at the guide surfaces of the designated Store guide rail displaceable. A durable and sufficiently resilient Elasticity is due to the inclusion of elastomer 62 in the resilient attacks achieved associated cavities. Preferably, the slider 6 with the elastomer 62nd manufactured with a so-called 2-component technology, so that no installation effort obtained for the elastomer. The rigid stop 63 serves to limit the deformation of elastic stops 61.

To adjust the window regulator is used as adjusting means for adjusting the relative Angular position of the two lever arms 4, 5 according to the embodiment of Figures 8 and 9 applied a backdrop setting. The illustration of Figure 8 shows an enlarged Section of the arm window lifter from FIG. 6 in the area of the adjustment means in FIG perspective view of the sides of the lever arms 4, 5 from. For the sake of the better Clarity in Figure 9, the relevant adjustment, but without the base plate 1 and the lever arms 4, 5, shown from the other side.

Accordingly, a slidably mounted in the guide slot 12 slide 121 has a cylindrical bearing surface 121 a for receiving the bearing portion 122 b of a fixing bolt 122, which is designed as a stepped bolt. This has a head area on one side on, via an elastic washer 124 on the back of the base plate. 1 is applied. The other side of the slider 121 'is formed as a threaded portion 122 b, the by a slot-shaped Einstellkulisse 12 in the short lever arm 420 of the guide arm. 4 through engages in the threaded portion 125a of the nut 125. The adjustment gate 42 ' extends in relation to the hinge axis 300 in the circumferential direction and has tooth-like form-fitting elements 43 which in the sheet metal of the guide arm. 4 are integrated. These interlocking elements 43 are positive locking elements 125c on the Assigned underside of the nut 125 whose interlocking the set position of Guide lever 4 with respect to the support axis 120 - and thus the relative Angular position between the levers 4 and 5 - also under the occurring mechanical To secure loads.

In order to prevent a rotation of the nut 125 during actuation of the fixing bolt 122, rises on the underside of the nut 125 a cuboid projection, in the Setting gate 12 can engage and its edges are supported on the gate 12.

According to a further variant of the invention, which is shown in Figures 10 and 11, are Adjustment provided, the eccentric positioning of the support axis 120th allow fixing fixing bolt 122 '. For this purpose, the slider 121 'has a Receiving opening with an internal toothing 121'a into which the external teeth 123a of the Cylinder portion of the base member 123 can engage. In the base part 123 is a respect to their Rotation axis 1230 eccentrically arranged cylindrical channel 123b incorporated, in the shank of the fixing bolt 122'a is inserted. By varying the rotational position of the base part 123, the position of the support shaft 120 can thus be adjusted.

The adjusting device described above allows the finer the setting more finely the teeth 121'a, 123a are executed. It is, however, on it to point out that the carrying capacity is sufficient to the expected mechanical Loads in the area of the support shaft 120 must be adjusted.

LIST OF REFERENCE NUMBERS

1

baseplate

10

camp

11

pivot bearing

12

guideway

13

slot

14

extension area

100

swivel axis

101

rivet bolts

110

Rotary axis of the drive pinion

120

support axle

121

Slide

121 '

Slide

121

cylindrical bearing surface

121'a

internal gearing

122

Bolt Fixing

122 '

Bolt Fixing

122a

disc

122aa

axle

122'aa

axle

122b

bearing section

122'b

head area

122c

head area

123

base

123a

external teeth

123b

cylindrical channel

124

elastic washer

125

fixing

125a

threaded portion

125b

head Start

125c

Form-fitting elements

1230

axis of rotation

2

drive unit

20

engine

21

transmission

22

Electronic control unit

210

pinion

3

Output element (toothed segment)

30

fastening point

31

pivot bearing

32

arch area

33

recess

300

joint axis

320

gearing

4

Second lever arm (guide arm)

40

bearing opening

41

guide pins

42

fastening point

42 '

Einstellkulisse

43

Shape shot element

410

Longer side of the second lever arm

420

Shorter side of the second lever arm

5

First lever arm (drive arm)

50

fastening point

51

guide pins

6

skid

60

Receiving opening for ball studs

61

resilient stop

62

elastomer

63

firm stop

A

Distance joint axis - support axis

B

Distance joint axis - pivot axis

Claims (18)

1. Window winding arm for a motor vehicle

   with a first lever arm (5) which is mounted pivotally on a pivotal axis (100)

   with a drive unit (2) which is connected to the first lever arm (5) through an output element (3)

   with a second lever arm (4) which is connected pivotally to the first lever arm (5) through an articulation axis (300) spaced from the pivotal axis (100) whereby the second lever arm (4) has a longer side (410) and a shorter side (420) opposite same, and

   with a slideway (12) in which a supporting axle (120) is guided which is mounted on the shorter side (420) of the second lever arm (4)

   whereby the output element is designed as a toothed segment (3) and wherein the toothed segment (3) is mounted on the swivel axis (100) and is connected rotationally secured to the first lever arm (5) and a drive pinion (210) connected to the drive unit (2) engages in the toothing (320) of the toothed segment (3), characterised in that the toothed segment (3) has a recess (33) extending along the toothing (320) and the supporting axle (120) engages through the recess (33) of the toothed segment (3)
2. Window winding arm according to claim 1 characterised in that in addition a base plate (1) is provided on which the pivotal axle (100) and the drive unit (2) are disposed and in which the slideway (12) is integrated.
3. Window winding arm according to at least one of the preceding claims characterised in that a slide element (121) is guided in the slideway (12) and accommodates the supporting axle (120).
4. Window winding arm according to at least one of the preceding claims characterised in that the first and second lever arm (5, 4) are connected at their one ends (51, 41) to a window pane.
5. Window winding arm according to at least one of the preceding claims characterised in that the toothed segment (3) is connected to the first lever arm (5) so that the toothing (320) points substantially in the direction of the end of the first lever arm (5) which is connected to the window pane.
6. Window winding arm according to at least one of the preceding claims characterised in that the distances (A,B) between the articulation axis (300) and the supporting axle (120) as well as between the articulation axis (300) and the pivotal axis (100) are the same size.
7. Window winding arm according to at least one of claims 2 to 6 characterised in that the longitudinal axis of the slideway (12) extends substantially along an imaginary connecting line between the pivotal axis (100) and the rotational axis (110) of the drive pinion (210).
8. Window winding arm according to claim 7 characterised in that the slideway (12) extends between the swivel axis (100) and the rotational axis (110) of the drive pinion (210) whereby the articulation axis (300) of the two lever arms (5, 4) lies between the pivotal axis (100) and the toothing (320) of the toothed segment (3).
9. Window winding arm according to at least one of the preceding claims characterised in that in the area of the supporting axle (120) there are adjusting means (42, 42', 121a, 121'a, 122, 122', 123a, 125) for adjusting the relative angular position between the first lever arm (5) and the second lever arm (4).
10. Window winding arm according to claim 9 characterised in that the adjusting means (42, 42', 121a, 121'a, 122, 122', 123a, 125) are spaced from the articulation axis (300) by at most a third of the distance between the articulation axis (300) and a bonding connection (51, 41) between the lever arm (5, 4) and window pane.
11. Window winding arm according to at least one of claims 9 and 10 characterised in that in the second lever arm (4) in the region of the supporting axle (120) is an adjusting slide guide (42') which extends circumferentially relative to the articulation axis (300) and through which the axle element (122aa) passes whereby a fixing element (125) fixes the relative position of the second lever arm (4) relative to the axle element (122aa).
12. Window winding arm according to claim 11 characterised in that along the adjusting slide guide (42') are transversely aligned positive locking elements (43) which can be brought into engagement with close-fitting positive locking elements (125c) of the fixing element (125) whereby an internal thread (125a) of the fixing element (125) corresponds to an external thread of the axle element (122aa).
13. Window winding arm according to claim 12 characterised in that the positive locking elements (43) lying on the side of the second lever arm (4) are integrated in same and are preferably formed as toothing.
14. Window winding arm according to at least one of claims 12 and 13 characterised in that the positive locking elements (125c) on the fixing element side are integrated in the contact bearing face of a nut.
15. Window winding arm according to at least one of claims 12 to 14 characterised in that a projection (125b) is raised from the contact bearing face of the fixing element (125) facing the second lever arm (4) and can engage in the adjusting slide guide (42') and serves as an anti-rotational lock.
16. Window winding arm according to at least one of claims 9 and 10 characterised in that in the second lever arm (4) in the region of the supporting axle (120) is a fixing spot (42) through which an axle element (122') engages whereby the axle element (122') is mounted eccentric relative to a base part (123) fixable at different angular positions.
17. Window winding arm according to claim 16 characterised in that the base part (123) supports on its outer contour positive locking elements (123a) whilst a part (121') supporting the base part (123) has a socket contour matching the external contour of the base part (123).
18. Window winding arm according to claim 17 characterised in that the base part (123) has a cylindrical outer surface infinitely adjustable through a clamping mechanism.

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