WO2008071158A1

WO2008071158A1 - Bearing arrangement for a slide in a guide channel of a guide rail

Info

Publication number: WO2008071158A1
Application number: PCT/DE2007/002192
Authority: WO
Inventors: Manfred Färber
Original assignee: Webasto Ag
Priority date: 2006-12-12
Filing date: 2007-12-06
Publication date: 2008-06-19
Also published as: DE102006058524A1; DE102006058524B4

Abstract

The invention relates to a bearing arrangement (1) for a slide (4) in a guide channel (3) of a guide rail (2) of an openable vehicle roof, wherein the slide (4) is arranged to move in a first movement direction in the guide channel (3) in particular in a vehicle longitudinal direction (X-direction) and is fixed in a second direction, in particular, a vehicle vertical direction (Z-direction) by means of channel defining walls (6, 7, 8), wherein at least one channel defining wall (8) has a wall section (10) of a length (Y1) which has a sprung movement in the Z-direction.

Description

Storage arrangement for a slider in a guide channel of a guide rail

The invention relates to a storage arrangement according to the preamble of claim 1.

From the prior art according to FIG. 3, a conventional storage arrangement 100 for sliders 101 of a sled 102 of an openable vehicle roof (not shown) is known in which the sliders 101 are displaceable in guide channels 103 of a guide rail 104 in a vehicle longitudinal direction (X direction) are stored. The guide channels 103 are limited by a first boundary wall 105 and a second boundary wall 106 in the vehicle vertical direction (Z direction) 107. The slider 101 has, for reasons of suspension and tolerance compensation, a soft core 110 and an abrasion-resistant sheath 111 or cap hard with respect to the soft core 110, with which the slider slidably cooperates on inner sides of the boundary walls 105 and 106. The slider 101 is plugged or clipped onto cantilevers of the carriage 102 or the like. In such a bearing arrangement according to the prior art, although a resilient tolerance compensation is ensured by the soft core 110 of the slider. However, the soft core is not sufficiently resistant to abrasion. Therefore, the hard casing 111 must be applied for wear reasons, to ensure sufficient abrasion resistance. This constructive structure results in a height Z2, which is usually in the range between 6 mm and 8 mm, sometimes even up to 10 mm. Depending on the structural environment, especially in a sliding roof of the classic construction, in which a sunroof cover lowered below a rear roof skin of a vehicle roof and is moved under this, the space requirement in the Z direction, so the size of the measure Z2 is crucial. It is a great need to reduce this height Z2, without sacrificing the wear resistance of the slider or the suspension or damping comfort of the cover storage of the sunroof cover with respect to the guide rail 104 to accept. In addition, the assembly work and in particular the number of parts necessary for the construction of the storage arrangement parts should be reduced.

A storage arrangement according to the prior art described with reference to FIG. 3 is also known in particular from DE 10 2004 033 544 B3.

From DE 102 33 257 Al a guide arrangement for motor vehicle sliding roofs is known, are mounted in the guide shoes in guide rails by means of special sliding elements, which form a thought triangle. The guide shoe is substantially U-shaped, and may have a resilient design, so that the guide shoe is guided without play in the guide rail. The problem with a resilient design of guide shoes is their simultaneous backlash connection to boom of drive carriage. Here, a double fit must be met, which is difficult to realize due to their mechanical overdetermination.

The object of the invention is therefore to provide a storage arrangement for a slider in a guide channel of a guide rail, in particular for an openable vehicle roof, wherein the Bauhδhe in the Z direction (vehicle vertical direction) is minimized and a play and / or rattle-free storage of gliders in the guide rail is guaranteed. At the same time, the number of parts and thus the installation costs be reduced for such a storage arrangement. In addition, the manufacturing cost of the guide rail by waiving narrow dimensional tolerances, as required in single-shell hard glides are to be reduced.

These objects are achieved with a storage arrangement having the features of claim 1. Advantage half embodiments are specified in the subclaims.

In essence, the invention aims to solve the tolerance compensation in the Z direction not within the component of the slider by a two-component structure with a soft core and a hard sliding shell, but the tolerance compensation in the Z direction for a backlash-free storage Slider in the guide channel of the guide rail to accomplish by a resilient configuration of at least a portion of a Kanalbegrenzungs- wall. This makes it possible to use a one-component slider, which can be easily made of a hard, abrasion-resistant plastic. The soft, resilient core of the slider can be avoided. As a result, a number of parts reduction is achieved.

In a particular embodiment, the channel boundary wall in addition to the resiliently movable wall portion of a length Yl, a second rigidly connected to the guide rail portion of the length Y2 on which the slider can be rigidly supported in the Z direction. This is particularly important for a sufficient determination of the sunroof lid in the Z direction in case of accident or the so-called breakout test, in which trying to tear out the lid in the Z direction upwards, important.

In the transition region between the first resilient wall region and the second rigidly connected wall region of Führungsungskanalbegrenzungswandung an elastic region is arranged, which can be realized for example by a longitudinal groove or other wall thickness taper, such as a longitudinal notch and articulated acts. The wall thickness taper, the notch or the groove may, for example, be turned toward the slider, ie be arranged as pointing in the guide channel of the guide rail. As a result, the groove can also serve as a dust or dirt receiving groove at the same time. If this is not absolutely necessary for design reasons, the wall thickness taper, notch or groove can of course also be arranged on an outer side of the channel boundary wall.

It has also proven advantageous to make the resilient boundary wall region of the length Y 1 thinner in terms of wall thickness than the rigidly connected region.

To ensure the play-free mountability of the slider in the guide channel of the resilient region is displaced by a measure .DELTA.Z in the vehicle vertical direction or at an angle αl shifted from a nominal position, so as to produce a resilient bias. This deflection by .DELTA.Z or the angle αl is of course chosen such that no unintentional jamming of the slider takes place in the guide channel.

As a particularly preferred ratio of the length Y2 of the rigidly connected wall portion to the total length of the wall (Y1 + Y2 + Y3), a range of 0.15 to 0.5 has been found to be optimal. With this ratio, it only needs to be ensured that reliable support of the sunroof lid in the Z-direction takes place during the breakout test or the pull-out test. Accordingly, the ratio of the length Y1 of the resilient portion to the total length Y (Y = Y1 + Y2 + Y3) may be in the range between 0.3 and 0.75. Provided it is ensured that If the resilient wall area is fixed sufficiently movably on the rigidly connected area, even lower ratios of Y1 to Y can possibly be realized. However, in the case of guide rails conventionally produced in the aluminum extrusion process, the ratio of 0.3 currently appears to be a viable lower limit. In the case of plastic guide rails, this ratio may possibly be undercut.

It has proven particularly useful to select the dimension Y 1 greater than the dimension Y 2 in order to keep the displacement α 1 and Δ Z small, and thus to avoid stress peaks, e.g. Avoid bending stress peaks in the material. In this case, it has proved particularly useful to accomplish the elastic connection of the resilient region to the rigidly connected region over a measure of the length Y3, wherein the ratio of Y3 to Y should preferably be less than 0.2.

In the following the invention will be explained in more detail by way of example with reference to the figures. Show it:

Figure 1: a storage arrangement according to the invention in a cross section through a guide rail;

FIG. 2 shows an enlarged view of a detail X from FIG. 1.

A storage arrangement 1 according to the invention (FIGS. 1, 2) has a guide rail 2 with guide channels 3 for receiving glides 4 of a slide 5 of a sunroof drive (not shown). The guide channels 3 are formed from a first horizontal boundary wall 6, a vertical boundary wall 7 and a second horizontal boundary wall 8. The guide channels 3 are essentially in Cross-section U-shaped and the carriage 5 open towards. They have a dimension Z2 in the vertical direction, which is an essential measure for the overall height of the storage arrangement in a vehicle vertical direction, referred to below as the Z direction. The sliders 4 are designed, for example, as one-piece slip-on glides, which are plugged or clipped on or otherwise fastened to free ends of the slide 5, which project into the guide channels 3.

The aim of the invention is to guide the slider 4 backlash in the guide channel 3, in particular in the Z direction without play. For this purpose, one of the horizontal boundary walls 6, 8, in the embodiment according to the in Figures 1 and 2, the second horizontal boundary wall 8 in a partial region resiliently formed.

For this purpose, the horizontal boundary wall 8 has a first resilient section 10 with a horizontal longitudinal extension Y1 shown in the figures, a second section 11 rigidly connected to the guide rail 3 with a horizontal extent of length Y2 and a transitional area 12 with a horizontal extent of length Y3 , The second portion is rigidly connected to the guide rail 3, in particular to the vertical boundary wall 7 in the region of the base 13 of the guide channel 3. The second rigidly connected region 11 extends one piece (dimension Y2) horizontally away from the vertical boundary wall 7 and forms part of the guide channel 3.

This is followed by a transition region 12, which has a horizontal extent of length Y3. At the transition region 12, the resilient portion 10 of the boundary wall 8 connects. The resilient section 10 has an ne horizontal extent of length Yl. In the region of the transition region 12, the boundary wall 8 has a groove or notch 14, which extends over the entire travel length of the slider 4 in the guide channel 3 (in FIGS. 1 and 2, vertical to the plane of the drawing). The groove 14 faces the guide channel 3. The leading section 10 adjoins the transition region 12 and is thinner in terms of its wall thickness (S2) than the rigidly connected portion 10 (wall thickness Sl).

The resilient portion 10 is arranged offset at its free end 15 by a measure .DELTA.Z from its nominal position (dashed lines) in the interior of the guide channel 3. This results in a graphical angular displacement of the resilient portion 10 from its nominal position by the angle αl. This results in a taper of the guide channel 3, which ensures that the slider 4 is held at the respective point in the guide channel 3 backlash in the Z direction. The resilient mobility of the resilient portion 10 is selected on the configuration of the spatial shape of the groove or notch 14 such that a backlash-free sliding of the slider 3 in the guide channel in a direction perpendicular to the plane of Figures 1 and 2 is possible.

The rigidly connected portion 11 has the task to ensure that at high forces occurring in the Z direction, as may occur, for example, in a breakaway attempt a sunroof cover or during operation of a vehicle at high speed by occurring depression on the roof outer skin, a reliable Holding the / of the carriage 5 in the Z direction, thus enabling a support of the slider in the Z direction. Only the resilient portion 10 realizes the backlash of the slider in the Z direction by its resilient resting on the sliders. 4 In order to ensure the lowest possible stress in the region of the notch / groove 14, it is expedient to make the dimension Yl of the resilient portion 10 as large as possible. At the same time, however, the dimension Y2 of the rigidly connected region 11 must be at least so great that reliable support in the Z direction is possible. The value here is a ratio of Y2 to the total horizontal extent of the horizontal boundary wall (Y) in a range between 0.15 to 0.5. The length Yl of the resilient portion 10 is relative to the total length of the boundary wall 8 and is in the range between 0.3 and 0.75. The dimension Y3 of the transition region 12 is preferably less than or equal to 20% of the total length Y. In any case, it is advantageous to select the dimension Yl greater than the dimension Y2.

In the illustrated embodiment, the upper horizontal boundary wall 8 is provided with a resilient portion 10. However, it is of course possible to provide a lower boundary wall 6, which additionally has a resilient portion.

In the invention it is of particular advantage that a reliable clearance free storage of the slider 4 in the Z direction is made possible. Simple trained gliders, for example made of a hard plastic, can be used, so that a dimension Z2 can be dimensioned smaller by about 50% compared to a construction according to FIG. 3.

The dimensions Y, Y1, Y2, Y3 and the ratios Y1 to Y, Y2 to Y and Y3 to Y can vary within wide limits and are essentially dependent on the degree of comfort to be achieved or the tolerance compensation to be achieved. The groove 14 also serves to provide the resilient bonding of the resilient portion to the rigidly connected portion 11 also to accommodate any existing dirt and thus to prevent unwanted jamming of the slider.

Particularly advantageous in the invention, in addition to the above-mentioned, that the number of required components has been reduced and thus the assembly costs and logistics costs are significantly reduced. Furthermore, it is advantageous that the invention in the region of the guide rail can be carried out without additional effort in their production without additional effort, since such guide rails are usually produced in the extrusion or continuous casting process and an over the entire length of the guide rail extending additional groove 14 readily can be incorporated into the mouthpiece, as well as in the production tool. Elaborate reworking such as milling or punching or the like are not necessary.

LIST OF REFERENCE NUMBERS

Bearing arrangement Guide rail Guide channels Slider Slider First Horizontal Boundary Wall Vertical Boundary Wall Second Horizontal Boundary Wall Vehicle Direction, Z-direction Spring Bearing Rigid Section Transition Area Reason Groove / Notch Free End

Claims

claims

1. Storage arrangement (1) for a slider (4) in a guide channel (3) of a guide rail (2) of an openable vehicle roof, wherein the slider (4) in the guide channel (3) in a first direction of displacement, in particular a vehicle longitudinal direction (X-direction ) is arranged displaceably and in a second direction, in particular a vehicle vertical direction, in particular a vehicle vertical direction (Z direction) by Kanalbegrenzungswandungen

(6, 7, 8), characterized in that ^{• at} least one channel boundary wall (8) has a Z-direction resiliently movable wall portion (10) of a length (Yl).

2. Storage arrangement according to claim 1, characterized in that, the channel boundary wall has a second wall portion (8) of the length (Y2) which is rigidly connected to the guide rail (2).

3. Storage arrangement according to claim 1 and / or 2, characterized in that between the first resilient wall portion (10) and the second rigidly connected wall portion (11) a flexurally elastic transition region (12) of the length (Y3) is arranged.

4. Storage arrangement according to one of the preceding claims, characterized in that the elastic transition region (12) by a notch, groove (14) or the like Wandstärkenverjünung is formed.

5. Storage arrangement according to one of the preceding claims, characterized in that the elastic transition region (12) is formed by a Wandstärkenverjüngung.

6. Storage arrangement according to one of the preceding claims, characterized in that the first resilient portion (10) with respect to the wall thickness (S2) is thinner than the second rigidly connected portion (11) with a wall thickness (Sl).

7. Storage arrangement according to one of the preceding claims, characterized in that the first resilient portion (10) is displaced by a degree (.DELTA.Z) or by an angle (.alpha.l) from a nominal position.

8. Storage arrangement according to one of the preceding claims, characterized in that the ratio of Y2 to

Y is in the range of 0.15 to 0.5, where Y = Y1 + Y2 + Y3.

9. Storage arrangement according to one of the preceding claims, characterized in that the ratio of Yl to

Y is in the range between 0.5 and 0.75, where Y = Y1 + Y2 + Y3.

10. Storage arrangement according to one of the preceding claims, characterized in that Yl is greater than Y2.

11. Storage arrangement according to one of the preceding claims, characterized in that the ratio of Y3 to Y is less than 0.20.

A storage arrangement according to any one of the preceding claims, characterized in that the groove / notch (14) faces the slider (4), i. is arranged pointing in the guide channel (3).

13. Storage arrangement according to one of the preceding claims, characterized in that the groove / notch (14) from the slider (4) away on an outer side of the Kanalbegrenzungs- wall (8) is arranged.