DE102019114925A1 - Cable window regulator - Google Patents

Abstract

The invention relates to a cable window lifter (1) for raising and lowering a window of a motor vehicle with a first rail (2) and a second rail (3) for installation in a door or side wall of the motor vehicle; with two drivers (4, 5) each guided on one of the rails (2, 3) and connected to the disk; with a pulley (10) guided on deflection pulleys (6, 7 or 8, 9) of the rails (2, 3), in particular crosswise, which is connected to the drivers (4, 5) and for lifting by means of a drive device (11) and lowering the pane is actuatable, characterized in that an energy store (12) is integrated in the cable pull (10).

Description

The invention relates to a cable window regulator according to the preamble of claim 1.

Such a cable window regulator is from the EP 1 367 206 A2 known. Based on the disadvantages of the prior art mentioned in this publication, the invention of the EP 1 367 206 A2 the task of improving a generic cable window lifter so that it is particularly suitable for a frameless motor vehicle door and forms a reliable guide over the entire range of motion of the window so that a defined guided and rattle-free mounting of the window is achieved in every position of the window .

For this purpose, it is provided in the generic cable window lifter that the pane holder or pane guide is designed such that it encompasses or overlaps a front edge of the pane over the entire range of motion.

As a result, the generic window lifter should be suitable in particular for frameless doors, for example of a convertible or a coupe.

• - Toleranzlagen der Schnittstelle an der Oberkante der Seitenscheibe zum Dach bzw. zum Verdeck;
• - kritische Grenzlage bei der Einstellung der Eintauchtiefe AS, BS und ferner ergibt sich zusätzlich eine kritische Grenzlage am Verdeck in Z-Richtung bei der unteren Toleranz am AS-Knoten;
• - die Grenzlagen der Eintauchtiefen müssen so ausgelegt werden, dass die Dichtheitsfunktion (insbesondere gegenüber Wasser) sichergestellt ist;
• - die Grenzlagen der Eintauchtiefen müssen ferner so ausgelegt werden, dass die Aeroakustikfunktion (Wind) sichergestellt ist; und
• - starke Abhängigkeit der Türöffnungskräfte zur Eintauchtiefe.

Investigations carried out within the scope of the present invention have shown, however, that in motor vehicles with frameless doors the ease of opening the door depends heavily on the following factors due to the system:

• - Tolerance positions of the interface on the upper edge of the side window to the roof or to the convertible top;
• - Critical limit position when setting the immersion depth AS, BS and, furthermore, there is also a critical limit position on the convertible top in the Z-direction with the lower tolerance at the AS node;
• - The limit positions of the immersion depths must be designed in such a way that the tightness function (especially against water) is ensured;
• - The limit positions of the immersion depths must also be designed so that the aeroacoustic function (wind) is ensured; and
• - strong dependence of the door opening forces on the immersion depth.

It is the object of the present invention to create a cable window regulator of the type specified in the preamble of claim 1, which enables door opening convenience, especially for coupes and convertibles, which is improved compared to the prior art.

This problem is solved by the features of claim 1.

In particular, the invention is based on the fact that in motor vehicles with frameless doors, such as in particular coupes and convertibles, the “short stroke” function was developed for opening the window. This means that when the door is opened, the pane is lowered over a short stroke (up to approx. -20 mm in the Z direction), while when the door is closed, the pane returns to its closed position after a short time.

Providing an energy store in the cable of the cable window lifter according to the invention results in the advantage that the energy store quickly releases the energy stored when the window is closed into the cable again, so that the window very quickly lowers into the short stroke position without in particular gets stuck in the sealing channel of the convertible top.

Furthermore, there is the advantage that no grinding noises occur when the window is lowered into the short stroke, with the further advantage that there is no jamming when the vehicle door is opened, since the window has been quickly lowered into the short stroke position. Furthermore, this does not result in any unpleasant vibrating or whirring noises.

Overall, this results in improved door opening convenience, door closing convenience and better functional acoustics.

The subclaims contain advantageous developments of the invention.

In particular, in a particularly preferred embodiment, it is possible to design the energy store as a spring assembly which has at least one spring, preferably in the form of a helical spring. In principle, however, it is also possible to combine a plurality of springs to form a spring package.

In principle, it is also possible to integrate the energy store, and in particular the spring assembly, in the cable in such a way that the energy store stores energy when the window is closed, which it can feed back into the cable when the window is opened, in order to quickly remove the disk to be able to convert their closed position into short stroke position.

If a spring is provided, which forms the energy store, the spring package is compressed when the window is closed and thereby stores energy, preferably in the form of a defined spring force that can be fed into the cable pull when the window is opened.

• 1 eine leicht vereinfachte Darstellung eines erfindungsgemäßen Seilzug-Fensterhebers,
• 2 eine der 1 entsprechende vergrößerte Darstellung einer Antriebsvorrichtung des Seilzug-Fensterhebers gemäß 1, und
• 3 eine vergrößerte Detailansicht eines Energiespeichers des Seilzug-Fensterhebers gemäß 1.

Further details, features and advantages of the invention emerge from the following description of an exemplary embodiment with reference to the drawings. It shows:

• 1 a slightly simplified representation of a cable window regulator according to the invention,
• 2 one of the 1 corresponding enlarged representation of a drive device of the cable window regulator according to FIG 1 , and
• 3 an enlarged detailed view of an energy store of the cable window regulator according to FIG 1 .

In 1 is inventive cable window regulator 1 for lifting and lifting off a motor vehicle window, which is particularly suitable for convertibles and coupes.

The window regulator 1 has a first rail 2 and a second rail 3 that are suitable for installation in a door or a side wall of the motor vehicle.

The window regulator 1 also has two each on one of the rails 2 or. 3 guided with the (not shown) disk connected driver 4th , 5 on.

On the rails 2 and 3 pulleys 6, 7 or 8, 9 are arranged over which a, in this embodiment, cross-guided cable pull 10 is performed, the one with the drivers 4th , 5 is connected and by means of a drive device 11 can be actuated to raise and lower the pane. The drive device 11 can for example comprise a drive motor, preferably designed as an electric motor, a reduction gear and a cable drum arranged in a housing. To open and close the window, the motor drive winds two strands of rope connected to one another via the rope drum rotatably mounted in the housing 17th or. 18th of the cable 10 up or down. The strands of rope 17th , 18th can, as in the embodiment shown, preferably be designed as Bowden cables.

As can be seen from a synopsis of the 1 to 3 results is the window regulator according to the invention 1 with an energy store 12th provided that in the cable 10 is integrated.

In the 1 to 3 The particularly preferred embodiment shown is the energy store 12th designed as a spring package with a defined spring force.

It is generally possible to use this energy store 12th so in the cable 10 to integrate that it stores energy when the window is closed, which is when a spring assembly is provided as an energy store 12th means that the spring package compresses when the window is closed and thus stores energy which is fed back into the cable when the window is opened 10 can be fed.

As can be seen in particular from a synopsis of the 2 and 3 results, is in the particularly preferred embodiment shown here, the energy store 12th in a connection area 13th the drive device 11 arranged. The detailed representation according to 3 shows here that the in this embodiment as a spring or spring package 12th trained energy storage on a guide 14th is performed and with its end areas on stops 15th and 16 is applied, i.e. between these attacks 15th and 16 is arranged.

In addition to the above written disclosure of the invention, to supplement the disclosure, reference is hereby made explicitly to the graphic representation in the 1 to 3 Referenced.

List of reference symbols

1

Window regulators, in particular cable window regulators

2, 3

first or second rail

4, 5

Carrier

6 to 9

Pulleys

10

Cable

11

Drive device

12

Energy storage / spring / spring package

13th

Connection area

14th

guide

15, 16

attacks

17, 18

Bowden cables

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 1367206 A2 [0002]

Claims (10)

Cable window lifter (1) for raising and lowering a window of a motor vehicle - with a first rail (2) and a second rail (3) for installation in a door or side wall of the motor vehicle; - With two drivers (4, 5) each guided on one of the rails (2, 3) and connected to the disk; - With a on pulleys (6, 7 or 8, 9) of the rails (2, 3), in particular crossed, guided cable (10) which is connected to the drivers (4, 5) and by means of a drive device (11) for The disc can be raised and lowered, characterized in that an energy store (12) is integrated in the cable pull (10). Cable window regulator after Claim 1 , characterized in that the energy store (12) is designed as a spring assembly. Cable window regulator after Claim 2 , characterized in that the spring assembly (12) has at least one spring, preferably a plurality of springs. Cable window regulator according to one of the Claims 1 to 3 , characterized in that the energy store (12) is arranged in a connection area (13) of the drive device (11). Cable window regulator according to one of the Claims 1 to 4th , characterized in that the energy store (12) is arranged on a guide (14). Cable window regulator after Claim 5 , characterized in that the guide (14) is designed as a guide rod. Cable window regulator according to one of the Claims 1 to 6th , characterized in that the energy store (12) is arranged between two stops (15, 16). Cable window regulator after Claim 7 , characterized in that the stops (15, 16) are fixed on the guide (14). Cable window regulator according to one of the Claims 1 to 8th , characterized in that the cable (10) has two Bowden cables (17, 18). Cable window regulator according to one of the Claims 1 to 9 , characterized in that the energy store (12) is integrated in the cable (10) in such a way that it stores energy when the window is closed.

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