DE102018201023A1 - Window regulator assembly with exciting compensation element on a drive housing for a flexible traction device - Google Patents

Abstract

The proposed solution relates to a window regulator assembly (F), with
a drive element (3) to be connected to a window pane to be adjusted,
- A flexible, elongated traction means (4) which is connected for transmitting an adjusting force with the drive element (3), and
- A drive (5) for the generation of the adjusting force having a housing (50) and at least one on the housing (50) arranged and with the flexible traction means (4) coupled drive component (7).
In this case, at least one compensating element (60, 61) is provided on the housing (50, 41) which acts on a portion (40, 41) of the flexible traction means (4) a clamping force (S1, S2) acting transversely to a longitudinal extension direction of the flexible traction means (4) ) exercises.

Description

The invention relates to a window regulator assembly with a flexible, elongated traction means.

Window regulator assemblies for adjusting a windowpane in a vehicle are well known. These usually have at least one drive element to be connected to the window pane to be adjusted. Such a drive element, for example in the form of a so-called driver, is connected to a flexible, elongate traction means of the window regulator assembly in order to transmit an adjusting force to the drive element. To generate the adjusting force, a drive is provided which usually has a housing and at least one drive component arranged on the housing and coupled to the flexible traction means. The drive component is, for example, a rotatably mounted pulley which drives a flexible traction device designed as a cable pull.

In such window regulator assemblies and hereby formed window regulators, in particular single-strand window regulators, it is customary to provide for length compensation of the flexible traction means resiliently mounted sleeves on the housing. Thus, with a mounted window regulator assembly, it can be observed that, depending on the adjustment direction of the drive element, different sections of the flexible traction means are tensioned to different degrees. Depending on the adjustment direction of the drive element, a tensile force is transmitted via the flexible traction means (for raising or lowering the window pane) via a first or second section of the flexible traction device which extends from the drive element to the drive component. A tracked portion of the flexible traction device is then consequently less loaded or unloaded. Under certain circumstances, however, the less heavily loaded section of the flexible traction device may in particular lead to undesired rattling noises and possibly impairments in the adjustment of the window pane (in an opposite adjustment direction) since the previously unloaded section of the flexible traction device must first be tightened again before the applied tensile force to adjust the drive element leads. About appropriate sleeve-like compensating elements with integrated compression spring the (traction means) sections of the flexible traction means are resiliently mounted on the housing to allow a length compensation and accordingly to keep strained less stressed or unloaded portions of the flexible traction means.

Such a length compensation via a spring acting in the longitudinal direction of extension of the traction means is frequently also used in combination with a traction means deflection by 90 ° on the drive element. Here, the flexible traction means is deflected according to the drive element. Such solutions, as well as the use of separate spring-loaded sleeves for length compensation, are associated with increased costs for the manufacture and assembly of the window regulator assembly, e.g. due to possibly necessary greasing of the Zugmittelumlenkung. Furthermore, associated with the known solutions under certain circumstances during operation of the window lifter disturbing noises associated with it, which must be avoided.

It is therefore an object of the proposed solution to provide an improved in this respect window regulator assembly.

This object is achieved with a window regulator assembly of claim 1.

After that, at least one compensation element is provided on the housing of the drive, which exerts on a portion of the flexible traction means acting transversely to a longitudinal direction of the flexible traction device clamping force.

The at least one compensating element is set up and provided for length compensation during the adjustment of the drive element in different adjustment directions. Depending on the direction of adjustment of the drive element designed, for example, as a driver, which is to be connected to the window pane to be adjusted, different sections of the flexible traction device are tensioned or loaded to different degrees. In particular, to avoid disturbing noises by unloaded and thus not tightly stretched portions of the flexible traction device, the at least one compensating element is provided (optionally instead of resiliently mounted in the longitudinal direction compensation elements for the flexible traction means). Depending on the adjustment of the drive element in one of two possible adjustment directions of the portion of the flexible traction means, which acts on the compensation element, stretched more or less. At weaker tension the compensating element bears with a tensioning portion on the flexible traction means in a first clamping position under tension and biases the corresponding portion of the flexible traction means. When the tension is greater, the traction means displaces (pushes) the portion of the compensating element bearing against it into a second tensioning position against the clamping force applied by the compensating element. From this second clamping position, the compensation element is automatically shifted in the direction of or in the first clamping position in an adjustment of the drive element in the other adjustment direction, thereby thereby again unloaded or at least weaker load stressed (traction) section of the flexible traction device and thus keep tight.

The clamping force applied transversely to the longitudinal direction by the at least one compensation element can also support a guidance of the traction means to us / or to the drive component of the drive. Thus, the at least one compensating element can pretension the section of the flexible traction device such that the section of the flexible traction device is permanently pressed against a guide channel in the drive component, for example a groove in a cable drum.

The at least one compensating element is, for example, elastic and / or elastically mounted. This includes, in particular, that the at least one compensating element exerts the clamping force acting transversely to the direction of longitudinal extension of the flexible traction device via an elastically biased in the direction of the portion of the flexible traction means clamping portion. The tensioning section of the at least one compensating element rests on the section of the flexible traction device that is to be tensioned in order to provide a length compensation. In one embodiment, the clamping portion is convexly curved in the direction of the associated Zugmittelabschnitts.

The at least one compensating element can be fixed to the housing via a fastening section. In such a variant, consequently, the at least one compensating element is produced separately from the housing and, for example, fixed in a material-locking, positive-locking and / or force-locking manner to the housing. For example, the at least one (separately manufactured) compensating element can be molded onto the housing, connected thereto, with at least one separate fastening means, such as a screw or a bolt, fixed to the housing or clamped to the housing.

Alternatively, the at least one compensating element may be formed on the housing. The compensation element is thus an integral part of the housing in such a variant. Such a compensating element formed on the housing may likewise have an elastically biased in the direction of the portion of the flexible traction means clamping portion to tension the traction means.

In one embodiment, the at least one compensating element is provided in the region of an opening of the housing, via which a portion of the flexible traction means is guided outwardly from an interior of the housing. The at least one compensating element is thus arranged, for example, on an opening of the housing from which the flexible traction means extends out of the housing and in particular from a drive component housed in the housing out of the housing in the direction of the drive element. Such a bias of the flexible traction means can not be provided directly in the region of the (drive) housing, but just at an area in which the flexible traction means extends out of the housing.

Incidentally, the at least one compensating element can alternatively or additionally be provided with at least one section on an outer side of the housing. This includes, for example, that the at least one compensation element is formed with at least one section projecting on an outer side of the housing. The compensation element is thus accessible from outside the housing. This can facilitate, for example, a check as to whether the flexible traction means is guided along the at least one compensating element as intended. In one embodiment, for example, a flexible tension means (pre-) exciting clamping section of the at least one compensating element projects on an outer side of the housing. This clamping section extends here, for example, from a (fastening) portion of the compensating element fastened to or in the housing or formed on the housing.

In one embodiment, the at least one compensation element is provided on a housing cover of the housing. Such a housing cover can in particular be a housing cover of a cable drive housing if the flexible traction device comprises a cable pull for the adjustment of the windowpane. A housing cover can in principle be mounted on a support component of the window regulator assembly. By way of example, the carrier component is a flat carrier on which functional components, in particular the window regulator assembly, are preassembled, such as, for example, the drive and a guide rail, along which the drive element is displaceably guided.

In a further development, the at least one compensation element with the housing cover forms a preassembled structural unit, which is mounted on a support component of the window regulator assembly. The compensating element for the tensioning of the flexible traction means can thus be pre-assembled on the housing cover or formed thereon so that the at least one compensating element is positioned as intended solely by mounting the housing cover on the carrier component. The housing cover can also store the coupled with the flexible traction drive component. For example, the drive component for generating a through the Traction means to be transmitted adjusting force rotatably mounted on the housing cover. In particular, the drive component can thus be a cable drum, on which and from the sections of the flexible traction device are unwindable and unwindable to adjust the drive element and hereby raise or lower the window.

In one embodiment, the housing cover forms a fastening groove, is held in the mounting portion of the compensating element. The attachment portion of the compensating element can thus be plugged into the mounting groove for mounting the compensating element on the housing cover, so that the housing cover with the compensating element forms a preassembled structural unit. This assembly with pre-assembled on the housing cover compensation element is mounted after the support member.

The at least one compensating element is executed in a variant of a lug.

Alternatively or additionally, the at least one compensating element may comprise a leaf spring or a molded-on spring in order to elastically support or elastically form a tensioning section of the at least one compensating element acting on the traction means.

The at least one compensation element can also be made of a plastic material, in particular of the same plastic material as the housing or of another plastic material. The at least one compensating element can also be made of a metallic material, for example spring steel, and thus consist of such a material in an alternative embodiment variant.

In one exemplary embodiment, at least two compensating elements are provided on the housing, each of which exerts a clamping force acting transversely to a longitudinal extension direction of the flexible traction element on different sections of the flexible traction element. The provision of two compensation elements offers the advantage of being able to bias different sections of the flexible traction device over separate compensating elements, which are each provided on one and the same housing. For example, depending on the adjustment of the drive element either a first portion of the flexible traction means on which a first compensating element exerts a clamping force, or a second portion of the flexible traction means on which a second compensating element exerts a clamping force, loaded weaker. The respective first or second compensation element is then set up and provided to tension this weaker loaded section of the traction means. The at least two compensation elements are thus mutually - depending on the adjustment of the drive element - in a first or second clamping position, depending on whether the respective associated portion of the flexible traction means transmits a tensile force to the drive element during adjustment of the drive element or is merely tracked. In particular, depending on whether the drive element is adjusted in a lifting or lowering direction for lifting or lowering the window, a respective less loaded or unloaded portion of the flexible traction means is thus held taut over the first or second compensating element.

In one exemplary embodiment, a first compensating element is provided in the region of a first opening of the housing, via which a first section of the flexible traction device is guided outwardly from an interior of the housing in a first direction, and a second compensating element is in the region of a second opening of the housing is provided, via which a second portion of the flexible traction means is guided in a (different from the first direction) second direction from the interior of the housing to the outside. In this variant, therefore, the housing of the drive has two different openings, from which in each case a portion of the flexible traction means extends out of the housing and, for example, to an upper or lower deflection point, via which the flexible traction means in each case to be connected to the window pane Drive element is guided. It can be achieved by means of the two first and second compensation elements that, in both possible adjustment directions of the drive element, the respective less loaded or unloaded traction means section is always tensioned in the area of the drive and thus kept taut.

For example, clamping portions of the two compensating elements, which is acted upon by the respective portion of the flexible traction means, at an angle ≥ 90 ° to each other oriented and provided on the outside of the housing of the drive protruding when the window regulator assembly is mounted as intended.

The proposed solution, of course, also relates to a window regulator for adjusting a window pane on a vehicle with a window regulator assembly corresponding to one of the variants explained above or below. Such a window regulator assembly may in particular be part of a door module with a corresponding window regulator.

The attached figures illustrate by way of example possible embodiments of the proposed solution.

• 1A in Seitenansicht und ausschnittsweise eine Ausführungsvariante einer vorgeschlagenen Fensterheberbaugruppe, mit einem flächigen Trägerbauteil und einem hieran fixierten Seilantriebsgehäuse mit zwei laschenförmigen, federnden Ausgleichselementen für die Vorspannung unterschiedlicher Seilzugabschnitte eines Seilzugs der Fensterheberbaugruppe und während einer Verstellung eines Mitnehmers der Fensterheberbaugruppe in eine erste Verstellrichtung (Hebenrichtung);
• 1B in mit der 1A übereinstimmender Ansicht die Fensterheberbaugruppe der 1 mit dem Mitnehmer während einer Verstellung in eine zweite Verstellrichtung (Senkenrichtung);
• 2 in vergrößertem Maßstab einen Gehäuse(lager)deckel des Seilantriebsgehäuses der Fensterheberbaugruppe der 1A und 1B mit hieran gelagerter Seiltrommel und an dem Gehäusedeckel vormontierten Ausgleichselementen.

Hereby show:

• 1A in side view and fragmentary one embodiment of a proposed window regulator assembly, with a flat support member and a fixed thereto cable drive housing with two tab-shaped, resilient compensation elements for biasing different cable sections of a cable pull the window regulator assembly and during an adjustment of a driver of the window regulator assembly in a first adjustment (lifting direction);
• 1B in with the 1A matching view of the window regulator assembly 1 with the driver during an adjustment in a second adjustment (lowering direction);
• 2 on an enlarged scale, a housing (bearing) cover of the cable drive housing of the window regulator assembly of the 1A and 1B with rope drum mounted thereon and compensating elements preassembled on the housing cover.

The 1A and 1B each show in side view and fragmentary a window regulator assembly F for adjusting a window pane within a vehicle door. The power window assembly F has a flat carrier component 1 on, on which different functional components can be specified. The carrier component 1 carries among other functional components of a window regulator, such as a guide rail 2 , one on the guide rail 2 slidably mounted drive element in the form of a driver 3 , which is to be connected to the window pane to be adjusted, and a cable drive 5 for driving a cable 4 , with the driver 3 is coupled.

The cable 4 is on the carrier component 1 deflected several times to by rotation of a drive component of the cable drive 5 the driver 3 along two mutually opposite adjustment directions V1 and V2 to be able to adjust. Along a first adjustment V1 can the with the driver 3 Connected window pane when the window regulator assembly is properly mounted to the vehicle F raised, along the opposite direction of adjustment V2 be lowered.

To drive the cable 4 is as a drive component of the cable drive 5 one in the 2 illustrated rope drum 7 intended. This is in a cable drive housing 50 of the cable drive 5 rotatably mounted. Depending on the direction of rotation of the cable drum 7 becomes the cable 4 This up and unwound, so the driver 3 either in the one adjustment V1 or in the other adjustment direction V2 is pulled. Accordingly, extend from the cable drive housing 50 two different cable pull sections 40 and 41 of the cable 4 to an upper or a lower deflection point on the guide rail 2 , For example in the form of a pulley, then on the respective Seilzugabschnitt 40 or 41 to the driver 3 is diverted.

Each cable section 40 or 41 extends from a cable opening 540 or 541 (see 2 ) from the inside of the cable drive housing 50 outwards in the direction of the respective associated upper or lower deflection point and then then to the driver 3 , Depending on whether the driver 3 in one or the other adjustment V1 . V2 is adjusted, which pulls a cable section 40 or the other cable section 41 at the driver 3 , This cable section 40 or 41 is then therefore more heavily loaded and taut, while the other Seilzugabschnitt 41 or 40 is unloaded and only tracked. Accordingly, in the in the 1A illustrated adjustment of the driver 3 in the adjustment V1 for lifting the window pane of a (upper) Seilzugabschnitt 40 heavier load while at the in 1B illustrated adjustment of the driver 3 in the adjustment V2 to lower the window pane, the other (lower) cable section 41 is more heavily loaded.

In order to avoid that the respective unloaded, trailing Seilzugabschnitt 41 or 40 taut remains, are on the cable drive housing 50 two tab-shaped, resilient compensation elements 60 and 61 intended. Each of these strap-shaped compensation elements 60 and 61 is in the range of an associated cable opening 540 or 541 on the cable drive housing 50 provided and exerts a clamping force S1 or S2 on the respectively associated and this led past cable pull section 40 or 41 out. The of a compensation element 60 or 61 on the respective cable section 40 or 41 applied clamping force S1 or S2 acts crosswise to a longitudinal direction of the cable 4 and push the cable 4 permanently against the inside of the cable drive housing 50 rotatably mounted cable drum 7 ,

Every compensation element 60 or 61 is presently elastic and in the direction of the respectively associated Seilzugabschnitts 40 or 41 biased. Will over the respective cable pull section 40 or 41 the tensile force for adjusting the driver 3 transmitted pushes this cable section 40 or 41 (stronger) against a convexly curved at its free end clamping section 604 or 614 of the respective compensation element 60 or 61 , This results in a resulting lateral force F1 or F2 that of the compensation element 60 or 61 applied tension S1 or S2 exceeds. On clamping section 604 or 614 a compensation element 60 or 61 is thus counteracted by the elasticity of the respective compensating element 60 or 61 displaced applied restoring force from a first clamping position to a second clamping position. For example, in an adjustment of the driver 3 in the adjustment V1 for lifting the window pane of the clamping section 604 one (upper) compensating element 60 shifted to the second clamping position, while the other clamping section 614 the other (lower) compensation element 61 is present in its first clamping position to the unloaded cable section 41 to stretch. At an adjustment of the driver 3 in the opposite adjustment V2 for lowering the window is the one (upper) clamping section 604 in a first clamping position, while the other clamping section 614 is shifted to a second clamping position.

About the tab-shaped, resilient compensation elements 60 and 61 is thus directly on the cable drive housing 50 constructively a length compensation for the cable 4 provided. The clamping sections 604 and 641 in this case are at an angle of ≥ 90 ° to each other on the cable drive housing 50 before and on an outer side of the cable drive housing 50 in the area of the two cable openings 540 and 541 ,

Like in the 2 is illustrated in more detail, in the present case, the two strap-shaped compensation elements 60 and 61 on a housing cover 501 of the cable drive housing 50 fixed. This housing cover 501 forms a bearing for the rotatable mounting of the cable drum 7 out. Furthermore, this is a plurality of fastening sections in the form of Schraubdomen 501 . 501b and 501c educated. About these screw domes 501 . 501b and 501c is the housing cover 501 to the carrier component 1 to fix as intended.

In the area of a screw dome 501c forms the housing cover 501 a fastening part 5010 from where the compensation elements 60 and 61 via a respective attachment section 605 or 615 are fixed. The fastening part 5010 in this case forms two fastening grooves 5016a and 5016b out. At each mounting groove 5016a . 5016b is a mounting section 605 or 615 a compensation element 60 or 61 inserted and held therein positively and / or non-positively.

The housing cover 501 can thus with the here already rotatably mounted cable drum 7 and the compensating elements fixed thereto 60 and 61 form a preassembled unit following the carrier component 1 is mounted. When installing the power window assembly F become the balancing elements 60 or 61 opposite one in the 2 apparent mounting position and against the respective restoring clamping force of an elastically formed compensation element 60 or 61 curious when the cable pull 4 as intended on the carrier component 1 moved and redirected. Every compensation element 60 . 61 is thus above its elastic and elastically mounted clamping section 604 or 614 exciting at the respective associated Seilzugabschnitt 40 or 41 on when the power window assembly F was mounted as intended. Is over the respective assigned Seilzugabschnitt 40 or 41 the tensile force for adjusting the driver 3 can transfer, a clamping section 604 or 614 of the respective compensation element 60 or 61 even further against the restoring elasticity S1 . S2 adjusted in the direction of a second clamping position and thus a spread of the two clamping sections 604 . 614 on the cable drive housing 50 be enlarged. The of the respective compensation element 60 or 61 applied tension S1 or S2 but in any case ensures that when stopping an adjustment movement of the driver 3 or a reversal of the adjustment of the associated and then again less loaded or unloaded Seilzugabschnitt 40 or 41 stays taut.

However, this is not mandatory, can in the present embodiment illustrated the 1A . 1B and 2 a tab-shaped, resilient compensation element 60 . 61 be made of a different plastic material than the cable drive housing 50 and in particular the housing cover 501 , For example, the housing cover 501 consist of a glass fiber reinforced plastic, while a tab-shaped compensating element 60 or 61 is made of a non-fiberglass reinforced plastic, for example polyoxymethylene (POM).

LIST OF REFERENCE NUMBERS

1

support component

2

guide rail

3

Driver (drive element)

4

Cable pull (flexible traction device)

40, 41

cable section

5

cable drive

50

Cable drive housing

501

housing cover

5010

attachment portion

5016a, 5016b

mounting groove

501a, 501b, 501c

screw boss

540, 541

cable opening

60.61

compensation element

604.614

clamping section

605, 615

attachment section

7

Cable drum (drive component)

F

A window regulator assembly

F1, F2

Resulting shear force

S1, S2

(Resulting) tension

V1, V2

Adjustment direction driver

Claims (17)

Window regulator assembly, comprising - a drive element (3) to be connected to a window pane to be adjusted, - a flexible, elongated traction means (4) which is connected to the drive element (3) for transmitting an adjusting force, and - a drive (5) for the Generation of the adjusting force, which has a housing (50) and at least one drive component (7) arranged on the housing (50) and coupled to the flexible traction means (4), characterized in that at least one compensating element (60) is attached to the housing (50) , 61) is provided which on a portion (40, 41) of the flexible traction means (4) exerts a transversely to a longitudinal direction of the flexible traction means (4) acting clamping force (S1, S2). Window regulator assembly after Claim 1 , characterized in that the at least one compensating element (60, 61) is elastically formed and / or elastically mounted. Window regulator assembly after Claim 2 , characterized in that the at least one compensating element (60, 61) acting transversely to the longitudinal direction of the flexible traction means (4) clamping force (S1, S2) via an elastically in the direction of the portion of the flexible traction means (4) biased clamping portion (604, 614 ) exercises. Window regulator assembly according to one of Claims 1 to 3 , characterized in that the at least one compensating element (60, 61) via a fixing portion (605, 615) is fixed to the housing (50). Window regulator assembly according to one of Claims 1 to 3 , characterized in that the at least one compensating element (60, 61) on the housing (50) is formed. Window regulator assembly according to one of the preceding claims, characterized in that the at least one compensation element (60, 61) in the region of an opening (540, 541) of the housing (50) is provided, via which a portion (40) of the flexible traction means (4). from an interior of the housing (50) is guided to the outside. Window regulator assembly according to one of the preceding claims, characterized in that the at least one compensating element (60, 61) is provided with at least one portion (604, 614) on an outer side of the housing (50). Window regulator assembly after Claim 7 , characterized in that the at least one compensating element (60, 61) is formed with at least one on an outer side of the housing (50) projecting portion (604, 614). Window regulator assembly according to one of the preceding claims, characterized in that the at least one compensating element (60, 61) on a housing cover (501) of the housing (50) is provided. Window regulator assembly after Claim 9 , characterized in that the at least one compensation element (60, 61) with the housing cover (501) forms a preassembled unit, which is mounted on a support member (1) of the window regulator assembly (F). Window regulator assembly after Claim 4 and after Claim 9 or 10 , characterized in that on the housing cover (501) has a fastening groove (5016a, 5016b) is formed, in which the fixing portion (605, 615) of the at least one compensating element (60, 61) is held. Window regulator assembly according to one of Claims 9 to 11 , characterized in that on the housing cover (501) with the flexible traction means (4) coupled to the drive component (7) is rotatably mounted. Window regulator assembly according to one of the preceding claims, characterized in that at least one compensating element (60, 61) is tab-shaped and / or made of a plastic material or a metallic material. Window regulator assembly according to one of the preceding claims, characterized in that on the housing (50) at least two compensating elements (60, 61) are provided, which on different portions (40, 41) of the flexible Traction means (4) each exert a transverse to a longitudinal direction of the flexible traction means (4) acting clamping force (S1, S2). Window regulator assembly after Claim 14 , characterized in that depending on the adjustment direction (V1, V2) of the drive element (3) either a first portion (40) of the flexible traction means (4) on which a first compensating element (60) exerts a clamping force (S1), or a second Section (41) of the flexible traction means (4) on which a second compensating element (61) exerts a clamping force (S2) is loaded weaker, and the respective first or second compensating element (60, 61) is set up and provided, then this weaker loaded section (40, 41) of the traction means (4) to tension. Window regulator assembly after Claim 6 and after Claim 14 or 15 , characterized in that a first compensation element (60) in the region of a first opening (540) of the housing (50) is provided, via which a first portion (40) of the flexible traction means (4) in a first direction from an interior of the housing (50) is guided to the outside, and a second compensating element (61) in the region of a second opening (541) of the housing (50) is provided, via which a second portion (41) of the flexible traction means (4) in a second direction an interior of the housing (50) is guided to the outside. Window regulator for adjusting a window pane on a vehicle with a window regulator assembly according to one of Claims 1 to 16 ,

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