Window lifter assembly

Abstract

A window lifter assembly includes a window pane which includes a connecting portion to which an adapter is molded, the adapter thereby being an integral part of the window pane, the adapter forming a driver element for moving the window pane along an adjustment direction and forming a supporting structure which extends in the adjustment direction and in a transverse direction and running generally perpendicular to the adjustment direction and parallel to a pane plane defined by the window pane, wherein an extension of the supporting structure along the transverse direction is at least twice as large as an extension of the driver element along the transverse direction.

Claims

1. A window lifter assembly, comprising: at least one guide rail extending along an adjustment direction, a window pane configured to be moved along the adjustment direction, a flexible cable for transmitting an adjusting force for adjusting the window pane, a driver element which is connected with the cable; and a sliding element connected with the driver element and being shiftably mounted on the at least one guide rail so that the driver element connected to the sliding element is adjustable along the at least one guide rail, wherein the window pane has a generally linear lower edge and two side edges, the window pane including a connecting portion extending away from the lower edge to which an adapter is molded, the adapter and the window pane thereby being an integral unitary one-piece component, wherein the adapter includes the driver element and includes a supporting structure, the supporting structure being configured to extend in the adjustment direction and in a transverse direction running generally perpendicular to the adjustment direction and substantially parallel to a pane plane defined by the window pane, and wherein an extension of the supporting structure along the transverse direction is at least twice as large as an extension of the driver element along the transverse direction.

2. The window lifter assembly according to claim 1, wherein the supporting structure is adjacent the lower edge of the window pane and extends along an entire length of the lower edge of the window pane.

3. The window lifter assembly according to claim 1, wherein the supporting structure tapers towards the driver element.

4. The window lifter assembly according to claim 1, wherein the supporting structure forms a rib structure.

5. The window lifter assembly according to claim 4, wherein the rib structure extends along the lower edge of the window pane with a first length and the driver element extends along the lower edge of the window pane with a second length, the first length being at least twice as large as the second length.

6. The window lifter assembly according to claim 1, wherein the connecting portion of the window pane protrudes from the lower edge of the window pane.

7. The window lifter assembly according to claim 1, wherein the window pane is at least partly made of a plastic material and the adapter is injection-molded to the plastic material of the window pane.

8. The window lifter assembly according to claim 1, wherein the adapter includes a manipulation protection element which is configured to block movement of a manipulation tool guided along the window pane.

9. The window lifter assembly according to claim 8, wherein at least a portion of the manipulation protection element extends at an angle to the pane plane.

10. The window lifter assembly according to claim 8, wherein the adapter is integral with the manipulation protection element.

11. The window lifter assembly according to claim 8, wherein at least a portion of the manipulation protection element extends substantially perpendicularly to the pane plane.

12. The window lifter assembly according to claim 1, wherein the supporting structure is adjacent the lower edge of the window pane and extends over a majority of a width of the window pane.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages and features of the invention will become apparent from the following description of exemplary embodiments with reference to the Figures.

(2) FIGS. 1A to 1E show respectively, a side view, a first perspective view, a second perspective view, a third perspective view, and a fourth perspective view of an exemplary embodiment of a window lifter assembly with an adapter integrally molded to a plastic side window, which forms a driver element with a sliding element locked into place thereon.

(3) FIGS. 2A to 2B show, respectively, a first perspective view and a second perspective view of a supporting structure and the driver element of the adapter on an enlarged scale.

(4) FIG. 3A on an enlarged scale shows the adapter with the supporting structure and the driver element and a sliding element only partly inserted into the driver element.

(5) FIG. 3B shows a perspective view of the sliding element.

(6) FIG. 3C shows a sectional representation of a guide rail of the window lifter assembly with the sliding element shiftably mounted thereon.

(7) FIG. 4A in a view corresponding with FIG. 3A shows the adapter with the driver element and the sliding element inserted therein in a proper functional position.

(8) FIG. 4B shows a further sectional representation of the guide rail with the sliding element shiftably held thereon.

(9) FIGS. 5A to 5B show, on an enlarged scale, respectively, a perspective view and a sectional view, of the sliding element properly held on a portion of the guide rail.

DETAILED DESCRIPTION

(10) FIGS. 1A to 1E in different views show an exemplary embodiment of a window lifter assembly F according to the invention, in which a window pane to be adjusted in the form of a side window S is adjustable along a guide rail FS. The adjustment is effected via a non-illustrated flexible traction means in the form of a Bowden cable. This Bowden cable is positively connected with a driver element 11 via cable nipples provided at its ends. The driver element 11 is shiftably held at the guide rail FS and connected with the side window S.

(11) The driver element 11 here is formed by an adapter 1 which is integrally molded in the region of a pane lower edge SU of the side window S. The side window S is designed as plastic window pane and hence at least partly made of a plastic material. The adapter 1 is injection-molded to the side window S by an injection molding or injection compression molding method and hence integrated into the side window S. The adapter 1 with the driver element 11 hence for example need not be connected with the side window S via a latching or clip connection. By integrally molding the adapter 1 to the side window S it also is ensured that a relative movement between the side window S and the driver element 11 cannot occur in operation of the window lifter.

(12) For a more loadable and more stable connection between the adapter 1 and the side window S the adapter 1 forms a supporting structure 10 in addition to the driver element 11. This supporting structure 10 forms a connection between the pane lower edge SU and the driver element 11 at which the adjusting forces for adjusting the side window S are introduced. The supporting structure 10 extends across the entire width B of the side window S in the region of the pane lower edge SU. To provide a connection to the side window S optimized in terms of force introduction to the driver element 11, which is distinctly smaller in its dimensions, in particular smaller with respect to the width B, the supporting structure 10 tapers in direction of the driver element 11. The tapering region is provided with a rib structure 102.

(13) The rib structure 102 above all is formed in the region of a connecting portion of the side window S formed as connecting sword SW and is injection-molded to this connecting sword SW. The connecting sword SW protrudes from the pane lower edge SU. In that the side window S is locally increased in a region in which the connection of the driver element 11 is effected, an increased connecting surface is provided for the adapter 1 with the driver element 11 and the supporting structure 10. The rigidity of the subassembly defined by the adapter 1 and the side window S thereby is further increased.

(14) In the region of the pane lower edge SU the rib structure 102 extends with a maximum width b102 along a transverse direction y which extends substantially transversely to the adjustment directions V1 and V2 defined by the guide rail FS for lowering and lifting the side window S and substantially parallel to the pane plane defined by the side window S. The maximum width b102 of the rib structure 102 provided approximately centrally at the pane lower edge SU here extends over about half of the (entire) width B of the side window S in the region of its pane lower edge SU.

(15) A width b11 of the driver element 11 projected onto the transverse direction y here is distinctly smaller than the width b102 of the rib structure 102 and hence also distinctly smaller than the entire width B of the adapter 1. For a stability and rigidity regarded as advantageous with comparatively little use of material, the width b102 of the rib structure 102 tapering from the pane lower edge SU in direction of the driver element 11 and hence the entire width B of the adapter 1 is at least twice as large as the width B11 of the driver element 11 projected onto the transverse direction y.

(16) In the region of the pane lower edge SU the supporting structure 10 of the adapter 1 forms a groove-like cutout 100. The adapter 1 with the supporting structure 10 hence is injection-molded to the side window S, preferably from a plastic material, such that the pane lower edge SU is enclosed by the supporting structure 10 over its entire width B and accommodated in the groove-like cutout 100.

(17) In the region of the cutout 100 the adapter 1 furthermore forms a manipulation protection element in the form of a protruding transverse or protective web 101. This protective web 101 protrudes from the adapter 1 in a direction which runs substantially perpendicular to the adjustment directions V1 and V2. In the properly installed condition of the window lifter assembly F the protective web 101 protrudes in direction of a vehicle outer side. Via the protective web 101 it should be prevented that with closed side window S a manipulation tool inadmissibly is introduced into a vehicle door along the side window S and past the adapter 1, in order to for example undesirably lower the side window S or open the vehicle door. The longitudinally extended protective web 101 here extends across the entire width B of the side window S in the region of the pane lower edge SU and at an angle of 90° to the pane plane of the side window S.

(18) As is illustrated in particular in the synopsis with FIGS. 2A and 2B, the driver element 11 integrally molded to the side window S via the adapter 1 forms two interfaces, on the one hand a first interface for the connection with the Bowden cable and on the other hand a second interface for a separate sliding element 2, via which the driver element 11 and hence the side window S is shiftably held on the guide rail FS.

(19) For the connection with the Bowden cable two nipple chambers 110a and 110b are provided on the driver element 11 of the (plastic) adapter 1. These nipple chambers 110a and 110b serve to accommodate cable nipples of the Bowden cable and of possibly additionally provided elements for damping and for cable length compensation in the form of springs or dampers. Furthermore a cable guide 112 also is formed on the driver element 11, in order to be able to place the cable ends with the cable nipples on the driver element 11 and deflect the same in a guided way.

(20) For the connection with a sliding element 2 a longitudinally extended, channel-shaped receptacle 111 furthermore is formed on the driver element 11 on a side of the driver element 11 opposite the nipple chambers 110a and 110b. The sliding element 2 here is held on the driver element 11 via a two- or three-stage latching connection, in order to specify different relative positions to each other for the driver element 11 and the sliding element 2, in which positions the two elements 11 and 2 each are arrested relative to each other. This will yet be explained in more detail below.

(21) FIGS. 3A to 3C, 4A to 4B and 5A to 5B illustrate further details of the adapter 1 integrally molded to the side window S and in particular of the driver element 11 formed by the same. FIGS. 3A and 3B show the sliding element 2 each with a view to (referring to the future mounting situation) an inner side in a condition in which the sliding element 2 is partly or completely inserted into the driver element 11.

(22) The sliding element 2 therefor is formed with a longitudinally extended protrusion 21 which can be inserted into the channel-like receptacle 111 of the driver element 11 along the mounting direction E. Furthermore, the sliding element 2 is shiftable relative to the driver element 11 via retaining tabs 113a, 113b and 114 formed by the driver element 11 or, vice versa, the driver element 11 is shiftably held relative to the sliding element 2. A pair of retaining tabs 113a, 113b therefor is arranged opposite a retaining tab 114 transversely to the adjustment direction V1 or V2, so that the retaining tabs 113a, 113b and 114 each can partly enclose the edge of one of two retaining legs 23, 24 of the sliding element 2 and hence secure the sliding element 2 on the driver element 11 transversely to the adjustment direction V1, V2 and transversely to a mounting or shifting direction E.

(23) The sliding element 2 is made of a particularly slidable material and can, in a manner known per se can be brought in engagement with the guide rail FS via a guiding slot 20 in the region of the protrusion 21. In this way, the driver element 11 itself need not be made of the particularly slidable and hence comparatively expensive (plastic) material, but merely the sliding element 2, which is dimensioned smaller, may be made of the slidable material. In operation of the window lifter, the sliding element 2 must however safely be fixed at the driver element 11, in order to be able to adjust the driver element 11 along the guide rail FS. At the same time, the assembly of the two elements 11 and 2 should be possible comparatively easily. In the present case, this is achieved via a two-stage latching connection.

(24) For this purpose, the sliding element 2 includes a flexible or even elastic latching portion 210 on its protrusion 21, on which two latches 21a and 21b in the form of latching noses are formed. These latches 21a and 21b are arranged one behind the other along the mounting direction E and each protrude from the latch portion 210. For the intended flexibility of the latch portion 210, the latch portion 210 extends along the mounting direction E and in a bridge-like manner over a cutout which is provided at the protrusion 21. In addition, in order to make an arrestment via the individual latch 21b more easily releasable than an arrestment via both latches 21a and 21b, the latch portion 210 is provided with different wall thicknesses in supporting regions 210.1 and 210.2 carrying the latches 21a and 21b. The latches 21a and 21b thus can get in engagement with latch openings 111a, 111b, 111c, which are formed within the channel-like receptacle 111 of the driver element 11. These latch openings 111a, 111b and 111c also are arranged one behind the other along the mounting direction E. Consequently, when the sliding element 2 with its protrusion 21 is inserted into the receptacle 111, the first (main) latch 21a initially locks into place with a first latch opening 111a defining a mounting position. When the sliding element 2 is shifted further in the mounting direction E relative to the driver element 11 or, vice versa, the driver element 11 is shifted in opposite direction relative to the sliding element 2, the main latch 21a gets in engagement with the succeeding (main) latch opening 111b, via which a functional position of the two elements 11, 2 relative to each other is specified.

(25) The main latch opening 111b in the present case is arranged between the two other latch openings 111a and 111c, so that depending on the mounting direction E the one or the other latch opening 111a or 111c specifies the mounting position. The depth and width of the latch openings 111b and 111c specifying the mounting position here is dimensioned such that the arrestment achieved thereby can be released again upon engagement of the (main) latch 21b with comparatively little expenditure of force, in order to further adjust the sliding element 2 and the driver element 11 relative to each other. On the other hand, when the main latch 21b engages into the middle main latch opening 111b, the further (secondary) latch 21a at the same time also engages into one of the further latch openings 111a or 111c. The arrestment provided thereby thus is distinctly more difficult to release again, so that the elements 2 and 11 then present in their functional position relative to each other are securely fixed at each other in operation of the window lifter.

(26) In connection with a possible mounting process the sliding element 2 initially can be premounted to the guide rail FS and subsequently manually be connected with the driver element 11 integrally molded to the side window S. For this purpose, the sliding element 2 is clipped into the driver element 11 via the multi-stage latching connection defined by the latch openings 111a, 111b and 111c as well as the latches 21a and 21b. For this purpose, the sliding element 2 shiftably held at the guide rail FS via its guiding slot 20 must manually be inserted merely into the channel-like receptacle 111 of the driver element 11 (sufficiently far).

(27) To ensure that the sliding element 2 then takes the position relative to the driver element 11 as shown in FIG. 4A and thus the two elements 2 and 11 can be arrested in their functional position relative to each other, the side window S is lowered in adjustment direction V1 and adjusted into a lower end position via the Bowden cable acting on the driver element 11. The sliding element 2, which in the mounting position protrudes from the driver element 11 in the adjustment direction V1, here strikes against a lower end stop, so that the driver element 11 is shifted in the adjustment direction V2 relative to the sliding element 2. The adjusting force acting on the driver element 11 here is sufficiently large, in order to release the arrestment of the mounting position and adjust the driver element 11 relative to the sliding element 2 to such an extent that both latches 21a and 21b then lock into place with the two latch openings 111a and 111b of the driver element 11. The sliding element 2 which in the functional position is properly locked into place with the driver element 11 then ensures an easy shiftability along the guide rail FS.

(28) For a defined and permanently stable abutment on the guide rail FS, slightly convexly curved contact regions 201, 202, 203 and 204 are formed within the guiding slot 20 of the sliding element 2 locally and offset to each other. Furthermore, supporting webs 22a, 22b and 22c arranged one behind the other and protruding along the adjustment direction V1 or V2 are provided on the (narrower) retaining leg 24 of the sliding element 2 for abutment on the guide rail FS.

LIST OF REFERENCE NUMERALS

(29) 1 adapter 10 supporting structure 100 cutout 101 protective web (manipulation protection element) 102 rib structure 11 driver element 110a, 110b nipple chamber (interface for cable connection) 111 receptacle (interface for connection with sliding element) 111a, 111c latch opening 111b main latch opening 112 cable guide 113a, 113b retaining tab (1st gripping portion) 114 retaining tab (2nd gripping portion) 2 sliding element 20 guiding slot 201, 202, 203, 204 contact region 21 protrusion 210 latch portion 210.1, 210.2 supporting region 21a, 21b latch 22a, 22b, 22c supporting web 23 retaining leg 24 retaining leg B broad supporting structure b11 (projected) width of driver element b102 width of rib structure E mounting/shifting direction F window lifter assembly FS guide rail S side window SU pane lower edge SW connecting sword (connecting portion) V1, V2 adjustment direction y transverse direction