EP0809747B1 - Pane guide for a lowerable spherically curved window pane in a vehicle door - Google Patents

Description

The invention relates to a disk guide for a spherical curved window pane that can be lowered into a door shaft is according to the preamble of claim 1. It is made possible by special training of the guide rails a double-strand cable window lifter and if necessary due to minor, usually at no additional cost Adjustments in the vehicle body and ideally Can also be used on the guide contour of the window pane such cable windows, which because of their strict parallel deduction generally not for lifting and Lowering window panes are suitable, their radii of curvature differ considerably in the area of the guide rails.

DE 40 08 229 A1 describes a device for lifting and Lowering a vehicle window with two closed, known rope loops running opposite to each other, being two rope drums on separate parallel ones Store axles and frictionally or positively with each other Stand by. One of the two rope drums is made by driven by a manual or electrical unit. Each The two rope loops are essentially along one vertical guide rail over provided at its ends Rope deflections performed.

According to an embodiment variant of this device Combination of rope drums with different diameters provided, creating a corresponding gear ratio arises between the two rope loops. So is an adjustment of the window regulator to the special deduction conditions spherically curved window panes possible. On the side of the smaller disk radius becomes the Guide rail with the lower displacement speed as well as the smaller displacement path and on the side of the larger disc radius, the guide rail with the higher displacement speed and the larger displacement path order the carrier.

The disadvantage is the relatively large technical Effort that is required to be highly spherically curved Window panes with the window regulator described above adjust. The double execution of rope loop and Rope drum leads to significantly higher costs.

The known from DE 37 18 840 C1 and the features of the preamble of claim 1 showing adjustment of spherical curved window panes using a conventional double-strand cable window lifter, which over two guide rails with adapted curvature and its driver (Glider) same-length paths while operating the Replace window regulator, caused when lowering the Window pane a tilting motion that results in a non-positive Installation of the window pane in at least one point leads to the door shaft. This leads to tension in the window regulator system and in the door body. Another disadvantage is that the increased System friction an increased drive torque and thus the Use of stronger and more expensive engines required.

The invention has for its object a vehicle door to develop further with a double-strand cable window lifter, that a sufficiently exact parallel deduction of the Lower edge of pane even with strongly spherically curved ones Window panes is guaranteed. This further development should be achieved without expensive additional measures or additional parts will.

According to the invention the task is characterized by Features of claim 1 solved. The subclaims describe preferred variants of the invention.

Starting from a conventional, bent in the Y direction, i.e. the guide rail adapted to the curvature of the pane, the guide rail according to the invention additionally has a Curvature transverse to the direction of displacement. Training the guide rails curved in two axes (directions) is chosen so that the sliding movement of the window pane additionally a swiveling movement around one of the leading edge point (pole) spaced from the window pane is superimposed. This can be explained by the fact that the fictitious barrel-shaped envelope, the component of which spherically curved window is when you move the Window pane at the same time in the direction of displacement pivots. I.e. So that, for example, when lowering the Window pane said fictitious barrel-shaped envelope also pivots down. Through these means the invention ensures that the window pane after Leaving their ideal, homogeneous position in the envelope surface the closed disc position always with three points lies on this barrel-shaped (starting) envelope and so on executes an almost ideal displacement movement.

The majority of technical applications are for the Displacement of the barrel-shaped window pane is not one require fixed pivot point; usually the Pivot point to be a migratory instantaneous pole.

• die Tonnenform (mehr zylindrisch oder mehr kugelig),
• die Abzugslinie der Fensterscheibe (sie kann mit der Scheibenschnittkante - zumeist B-säulenseitig - übereinstimmen),
• die Winkelabweichung der Abzugslinie von der Z-Achse der tonnenförmigen Hüllfläche in X-Richtung,
• der Scheibenhub und
• die Lage der Fensterscheibe bzgl. der spiegelsymetrischen Z- Achse der tonnenförmigen Hüllfäche.

The position of the instantaneous pole and in particular its distance from the leading edge of the window pane depends on many parameters. The main influencing factors are:

• the barrel shape (more cylindrical or more spherical),
• the pull-off line of the window pane (it can coincide with the cut edge of the pane - mostly on the B-pillar side),
• the angular deviation of the withdrawal line from the Z axis of the barrel-shaped envelope surface in the X direction,
• the disc stroke and
• the position of the window pane with respect to the mirror-symmetrical Z-axis of the barrel-shaped envelope.

• Je mehr sich die Tonnenform einer Kugel annähert, also von der Zylinderform abweicht, desto stärker schwenkt die Scheibe und desto kleiner wird der Radius R einer Scheibenführungskante, wenn die Scheibe nicht von der spiegelsymetrischen Achse der Tonnen geschnitten wird.
• Umso größer der Winkel zwischen der Abzugslinie der Fensterscheibe und der vertikalen Z-Achse ist, desto größer ist die Vorverlagerung der Scheibe in der X-Richtung kleiner werdender Tonnenradien und somit auch der Grad des Schwenkens der Scheibe (aus der X-Achse).
• Umso größer der Scheibenhub ist (also umso größer der Verdrehwinkel auf der tonnenförmigen Hüllfläche), desto stärker ist das Schwenken der Fensterscheibe während des Verstellvorganges (aus der X-Achse).
• Je weiter die Fensterscheibe von der spiegelsymetrischen Achse entfernt liegt, je stärker sie also in den Bereich stärkerer Wölbung der tonnenförmigen Hüllfäche hineinrückt, desto stärker ist wiederum das Schwenkverhalten der Fensterscheibe (aus der X-Achse).

It is currently not possible to state the quantitative effects of the above influencing factors on the location of the migratory instantaneous pole. Iterative construction methods appear most suitable for the design of the vehicle door according to the invention. Basically, the following can be assumed:

• The more the barrel shape approaches a sphere, i.e. deviates from the cylindrical shape, the more the disk swivels and the smaller the radius R of a disk leading edge if the disk is not cut by the mirror-symmetrical axis of the barrel.
• The greater the angle between the pull-off line of the window pane and the vertical Z-axis, the greater the forward displacement of the pane in the X direction of smaller barrel radii and thus the degree of pivoting of the pane (from the X-axis).
• The greater the window stroke (i.e. the greater the angle of rotation on the barrel-shaped envelope surface), the greater the pivoting of the window pane during the adjustment process (from the X axis).
• The further the window pane is from the mirror-symmetrical axis, i.e. the more it moves into the area of greater curvature of the barrel-shaped envelope, the stronger the pivoting behavior of the window pane (from the X axis).

According to a preferred variant of the invention, the guide contour the window pane adapted to its swiveling movement, by making it curved. As the guiding contour of the front window pane acts on the A or B pillar side Edge of the pane, for the rear window panes the B- or C-pillar-side disc edge as a guide contour in use. The assigned guide contour of the guide rail has a matching edge of the pane, i.e. opposite arched curvature. The curvatures form as far as possible the section of a circle on which two reference points (e.g. upper and lower corner of the leading edge the window pane) during the operation of the window regulator be moved.

Provided that the swivel angle of the barrel-shaped Envelope is only small and the "ideal" curvature the leading edge of the window pane e.g. just a deviation of about 1 mm from a straight line, can a curved leading edge can be dispensed with. Mostly can the guide profile of the door body conceal the resulting minor gaps.

Since both the projection of the guide rails into the X-Z-E plane results in an arcuate contour, as well as in the Y-Z plane projected contour of the guide rails is curved, the guide rails have a hint helical formation. As a result, it comes when moving the window pane to an overlay the pivotal movement essentially in the Z direction the window pane and its forward displacement in the X direction.

The invention is spherical for moving everyone curved window panes, especially if inexpensive double-strand cable window lifters under Exclusion of material-intensive special constructions for Should come to use. A limiting case of the invention lies before if the mirror-symmetrical axis (parallel to the Z-axis) the window pane of the fictitious barrel-shaped envelope divides approximately in the middle. In this special case the window would do not perform a tilting movement and can with a conventional double-strand cable window lifter can be easily adjusted.

Figur 1a -

eine Seitenansicht einer sphärisch gekrümmten Fensterscheibe in ihrer obersten Position mit zugeordneter fiktiver tonnenförmiger Hüllfläche in ungeschwenkter bzw. geschwenkter Position bei erfindungsgemäßer Verschiebebewegung der Fensterscheibe;

Figur 1b -

eine schematische Darstellung der Ansicht von Figur la aus X-Richtung;

Figur 2a -

eine Seitenansicht einer sphärisch gekrümmten Fensterscheibe in ihrer obersten und untersten Position bei einer Verschiebebewegung der Fensterscheibe mittels eines Seilfensterhebers gemäß dem Stand der Technik;

Figur 2b -

eine schematische Darstellung der Ansicht von Figur 2a aus X-Richtung;

Figur 3 -

wie Figur 1a, jedoch mit zusätzlicher Verlagerung der Fensterscheibe in X-Richtung und mit konkav beschnittener Führungskontur der Fensterscheibe;

Figur 4a -

wie Figur 3, jedoch mit drei zusätzlichen Zwischenpositionen der Fensterscheibe;

Figur 4b -

einen vergrößerten Ausschnitt aus Figur 4a zur Verdeutlichung der Erfindung in stark übertriebener Darstellung des Schwenkwinkels zwischen oberer und unterer Position der fiktiven tonnenförmigen Hüllfläche und des damit verbundenen Schwenkbereichs der Fensterscheibe und

Figur 5 -

eine Seitenansicht einer spiegelsymetrischen tonnenförmigen Hüllfläche mit zwei Seitenscheiben eines Kraftfahrzeugs.

The invention is explained in more detail below with reference to the figure shown. Show it:

Figure 1a -

a side view of a spherically curved window pane in its uppermost position with an associated fictitious barrel-shaped envelope surface in the non-pivoted or pivoted position with the inventive movement of the window pane;

Figure 1b -

a schematic representation of the view of Figure la from the X direction;

Figure 2a -

a side view of a spherically curved window pane in its uppermost and lowermost position during a sliding movement of the window pane by means of a cable window lifter according to the prior art;

Figure 2b -

a schematic representation of the view of Figure 2a from the X direction;

Figure 3 -

as in FIG. 1a, but with an additional displacement of the window pane in the X direction and with a concavely cut guide contour of the window pane;

Figure 4a -

as in FIG. 3, but with three additional intermediate positions of the window pane;

Figure 4b -

an enlarged section of Figure 4a to illustrate the invention in a greatly exaggerated representation of the pivot angle between the upper and lower position of the fictitious barrel-shaped envelope and the associated pivoting range of the window and

Figure 5 -

a side view of a mirror-symmetrical barrel-shaped envelope with two side windows of a motor vehicle.

The invention is based on a well-known double-stranded Cable windows on, which are essentially made up of a closed rope loop, which has a a cable drum connected to a drive and via two cable deflection pairs at the ends of parallel guide rails is led. Slidable bearings on the guide rails and sliders that can be connected to the window pane.

According to the invention, the guide rails are both in the X-Z plane as well as the Y-Z plane with a curvature Mistake; in such a way that depending on the situation the window pane on a fictitious barrel-shaped envelope the window pane during the sliding movement a swiveling movement keeping the lower edge of the pane parallel is performed. There are always three points Window pane on the barrel-shaped envelope that the Target position is to be assigned.

The schematic representation of Figure 1a shows the side view a spherically curved window pane 1o, 1u in the two end positions in a motor vehicle door. In the upper end position of the window pane 1o is this Part of a fictitious barrel-shaped envelope surface 2o, whose rotationally symmetrical axis 20o parallel to the lower edge of the pane 10u. Because this window pane 1o, 1u should ensure a vertical deduction the left pane edge 10l and the right pane edge 10r trimmed so that they are parallel to the mirror-symmetrical Axis 30o, 30u of the barrel-shaped assigned to it Envelope surface 2o, 2u run.

When lowering the window pane into its lower end position 1u swings the fictitious barrel-shaped envelope 2o apparently in the lower position of the envelope surface 2u, the apparent pivot point at the intersection S of both axes 20o and 20u. The window pane also leads 1o, 1u a swiveling movement with the same Angle off. In the lower position of the window pane 1u it still has three points of contact with the assigned one fictitious envelope 2o. Because of the invention geometric conditions when moving a spherical curved window pane 1o, 1u on the fictitious envelope surface 2o the lower edge of the pane is guided in parallel 10u, the prerequisite for smooth operation a double-strand cable window lifter with only one closed rope loop. So the envelope swings 2o during the sliding movement with the window pane 1o, 1u in the position of the envelope surface 2u. That's the only way Window lift H with a double-strand cable window lifter guaranteed without tension in the lifting system or the door will.

At this point it should be pointed out that the Lower window edge 10u of the window pane lo also angular to the axis 20o of the envelope surface 2o. This is changing however, nothing about the fact that the lower edge of the pane 10u in each disc position run parallel to each other.

Figure 1b schematically shows the view of Figure 1a X direction, the area projected in this direction the spherically curved window panes 1o, 1u dark are tinted. The parallel one is also clearly recognizable Course of the lower window edge 10u of the window pane 1o to the lower window edge 10u of the window pane 1u after this was shifted by the stroke H. Furthermore, the schematic representation of Figure 1b are taken, that the window pane 1o in its upper position upper, non-pivoted barrel-shaped envelope surface 2c assigned. This envelope surface 2o is indicated through the respective upper circle 2go of the two circles with the large diameter and the associated circle 2ko smaller Diameter shown, assuming should be that the intersection of the barrel-shaped envelope surfaces 2o directly along the left edge of the pane 10l and right pane edge 10r.

Since by definition it was assumed that the window pane 1o, in its upper end position a part the assigned fictitious barrel-shaped envelope surface 2o reproduces exactly, their left pane edge 10l and their right pane edge 10r with the contours of the circles 2go, 2ko together, to the upper barrel-shaped envelope 2o belong with their axis of rotation 20o. However, it must it should be noted that to illustrate the invention a simplistic and at the same time exaggerated representation had to be chosen. As a result, the situation could the corner points of the window pane do not exist in real conditions being represented. It should be noted that at a sliding movement of the window pane 1o, 1u their Corner points move in the X direction and thus on larger or smaller radii of the envelope surface 2o come to rest.

Reference number 20u is the exit point of the axis of rotation 20u from the small circular in the X direction End face. In the lower position the window lu does not form a homogeneous surface Area with the swiveled envelope 2u.

In comparison to the previously described embodiment Figures 2a and 2b show analog representations that on an adjustable from a cable window lifter Window pane 1o, 1u refer, as indicated by the in the Introduction to the described window lifter DE-A1 40 08 229 would take place.

A displacement of the window pane 1o, 1u accordingly takes place on one and the same barrel-shaped envelope 2, wherein completed a certain angular rotation on the envelope surface becomes. Inevitably puts the window pane 1o, 1u in Area of their right pane edge 10r that in this Embodiment acts as a leading edge 10f, a larger way back than the left edge of the pane 10l. This but corresponds to different stroke lengths Hl and Hr, from which finally an angular position between the lower edge of the pane 10u of the window pane 1o in its upper one Position and the lower edge of the window 10u of the window 1u in its lower position.

Due to the inclination of the as the trigger edge (trigger line) Acting right pane edge 10r occurs during it a sliding movement of the window pane at the same time to an advance in the X direction.

It can also be clearly seen in FIG. 2b that the lower edge of the pane 10u of the window panes 1o and 1u due to different Stroke lengths Hl and Hr are not parallel (Compare Figure 1b).

FIG. 3 again shows an embodiment variant according to the invention, which largely corresponds to Figure 1a. However, it did not become vertical, parallel to the Z axis Trigger direction selected for the window pane 1o, but a withdrawal line running at an angle to the Z axis. This Deduction line does not describe a straight line as usual, but due to the pivoting movement of the window pane 1o, 1u an arc during the shifting process. A accordingly adapted trimming of the leading edge 10f the radius R enables exact disc guidance, if the body-side guide areas a corresponding have convex formation.

In order to clarify the problem of the wandering momentary poles, shows Figure 4a based on the variant of Figure 3 of the intermediate positions 1 ', 1 ", 1"' Window pane 1 and in Figure 4b a greatly exaggerated Detail section.

According to FIG. 4a, the reference point is 100o (from the upper edge of the pane 10o and leading edge 10f formed corner point) starting approximately on a circular arc with the radius R. from the pole P, regardless of the position in which the Window 1 is located. The radius R should be about stand vertically on the leading edge 10f.

From the (exaggeratedly) enlarged figure 4b, however, it can be seen that in the intermediate positions of the window panes 1 ', 1 ", 1"' the orthogonal in the associated reference points 100 ', 100' ', 100' '' on the leading edges 10f ', 10f ", 10f"' none with the same length common pole, but migratory instantaneous poles P ', P ", P"' form. Also cut when the orthogonal is extended these in different places.

The complex helical movement of the window pane 1 one swiveling during the displacement movement and if necessary. shifting in the X direction at the same time barrel-shaped envelope surface 2o, 2u, cannot in simple mathematical relationships are described. However, iterative construction methods are used very satisfactory technical solutions. You can do that Boundary conditions that are justified in individual cases (e.g. angle of the Deduction line with the Z axis) is sufficiently taken into account will.

The schematic representation of Figure 5 shows a fictitious barrel-shaped envelope surface 2 with two to a motor vehicle belonging window panes 11 and 12, which are in their upper end position substantially above the axis of rotation 20 are located. The window pane 11 is in her right edge area of the mirror-symmetrical axis 30 cut. Your leading edge (here the right pane edge) is inclined to the Z axis. When lowering the window pane 11 according to the described invention there is a shift towards smaller ones Barrel diameter and counter to a pivoting movement clockwise. The other, in the right half of the barrel-shaped envelope 2 located window pane 12 on the other hand, there is a clockwise swivel movement when lowering To run.

Of course, actuation according to the invention is also possible two windows of the same vehicle possible, where the geometric data of the barrel-shaped Enveloping surfaces of the individual window panes can distinguish.

Reference list

1 -

Window pane

1o -

Window pane in the top position

1u -

Window pane in the lowest position

1' -

Window pane in the upper intermediate position

1" -

Window pane in the middle intermediate position

1"' -

Window pane in the lower intermediate position

10l -

Edge of the pane, left

10r -

Edge of the pane, right

10f -

Leading edge

10f '-

Leading edge upper intermediate position

10f "-

Leading edge middle intermediate position

10f '' '-

Leading edge lower intermediate position

10o -

Edge of the pane, above

10u -

Edge of the pane, below

100 -

Reference point

100o -

Reference point above

100u -

Reference point below

100 '-

Reference point upper intermediate position

100 ''

Reference point middle intermediate position

100 '' '-

Reference point lower intermediate position

2 -

Contour of the barrel-shaped envelope surface

2o -

Contour of the barrel-shaped envelope surface in the top position

2u -

Contour of the barrel-shaped envelope surface in the bottom position

2g -

Contour of the large circular face of the barrel-shaped envelope surface

2go -

Contour of the large circular face of the barrel-shaped envelope surface in the upper position

2gu -

Contour of the large circular face of the barrel-shaped envelope surface in the lower position

2k -

Contour of the small circular face of the barrel-shaped envelope surface

2ko -

Contour of the small circular face of the barrel-shaped envelope surface in the upper position

2ku -

Contour of the small circular face of the barrel-shaped envelope surface in the lower position

20 -

X-axis and rotationally symmetrical axis of the barrel-shaped Envelope surface

20o -

X-axis of the barrel-shaped envelope surface in the top position

20u -

X-axis of the barrel-shaped envelope surface in the lowest position

P -

pole

P '-

Current pole in the upper intermediate position

P "-

Current pole in the middle intermediate position

P "'-

Current pole in the lower intermediate position

S -

Intersection

R -

radius

H -

Stroke

Mr -

Right edge of the window stroke

H1 -

Stroke of the left edge of the pane

11 -

Window pane (driver's seat)

12 -

Window pane (rear)

30 -

Z-axis mirror-symmetrical axis of the barrel-shaped Envelope

30o -

mirror-symmetrical axis

30u -

mirror-symmetrical axis

Claims (6)

1. Pane guide for a spherically curved window pane (1, 1o, 1u, 1',1",1"') which can be lowered in a door shaft of a vehicle door and which is substantially a component part of an imaginary sleeve face (2,2o,2u) which is barrel-shaped in the longitudinal direction of the vehicle defined as the X-direction and which can be pushed by a double-strand cable window regulator mountable in the door shaft with a pane guide having two guide rails roughly in the direction of a vehicle vertical axis defined as the Z-direction and running across the longitudinal direction of the vehicle, whereby the guide rails have a first curvature adapted to the pane curvature in a vehicle transverse direction defined as the Y-direction and running both transversely relative to the X- and also to the Z-direction and support at the ends cable guide pulleys through which a closed cable loop is guided wherein the cable loop is in fixed connection with entrainment members guided on the guide rails for the window pane (1,1o,1u,1',1", 1"') and is attached to a drive unit by means of which the window pane (1,1o, 1u,1', 1",1"') is to be moved in an area between a lower and an upper extreme position,
   characterised in that
   both guide rails each have additionally across the first curvature a second curvature and that either a right or a left pane edge (10r,10l) serves as a guide edge (10f,10f',10f",10f"') which is provided with a guide contour associated with the corresponding guide rail so that additionally a swivel movement, keeping the lower edge (10u) of the pane parallel, about a swivel point (P,P',P'',P''') spaced from the guide edge (10f, 10f', 10f",10f"') of the window pane (1,1o,1u,1',1'',1''') in the X-direction is superimposed on the displacement movement of the window pane (1,1o,1u,1',1'',1'') whereby the imaginary barrel-shaped sleeve face (2, 2o,2u) on which the window pane (1,1o, 1u,1',1",1"') is displaced, swivels at the same time in the displacement direction of the window pane (1,1o,1u,1',1'',1''') and during the displacement movement between the extreme positions there are always three points, more particularly three corner points of the window pane (1,1o,1u,1',1'',1''') lying on the barrel-shaped sleeve face (2,2o,2u) which is associated with the window pane (1,1o,1u,1',1'',1''') in one of the extreme positions.
2. Pane guide according to claim 1, characterised in that the swivel point about which the window pane (1,1o, 1u,1',1",1"') swivels during displacement movement is a wandering momentary pole (P',P'',P''').
3. Pane guide according to claim 1, characterised in that the guide edge (10f,10f',10f'',10f''') of the window pane (1,1o,1u,1',1'',1''') is curved in the swivel plane and the associated guide contour of the guide rail - in the case of a frameless door where applicable the adjoining contour of the vehicle bodywork - are curved correspondingly wherein the curvatures projected in the X-Z plane reproduce the section of a circle on which two reference points of the guide edge (10f,10f',10f'',10f''') of the window pane (1,1o,1u,1',1",1"') are moved during its activation.
4. Pane guide according to claim 3, characterised in that the reference points of the guide edge (10f,10f',10f",10f'"), the topmost corner point (1000o) and the lowermost corner point (1000u) of the window pane (1,1o, 1u, 1', 1' ',1' ' ') lie on the guide line.
5. Pane guide according to at least one of the preceding claims, characterised in that the contour of the guide rails projected in the X-Z plane is curved so that the barrel-shaped window pane (1, 1o,1u,1', 1",1"') during activation of the pane, undergoes in addition to the sliding and swivel movement also a forward displacement in the X-direction.
6. Pane guide according to claim 5, characterised in that the guide rails are formed helical so that the superimposing movements, namely the swivel movement and forward displacement of the barrel-shaped window pane (1, 1o,1u,1', 1",1"') in the X-direction, describe a helical curve.

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