CN115476929A

CN115476929A - Vehicle roof with a fixed roof element and a plastic molded section

Info

Publication number: CN115476929A
Application number: CN202210598332.9A
Authority: CN
Inventors: U·施赖伯; J·克内普夫勒; L·施蒂格勒; J·朗; M·卡奇马雷克; M·普拉代拉
Original assignee: Webasto SE
Current assignee: Webasto SE
Priority date: 2021-05-31
Filing date: 2022-05-30
Publication date: 2022-12-16
Also published as: DE102021114035A1

Abstract

The invention relates to a roof for a motor vehicle, comprising a fixed roof element (14) which comprises a rigid plate-shaped housing element (16), on the underside of which a drive assembly (28) for an adjustable functional element is arranged, which drive assembly comprises conduits (34, 36) for drive cables (30A, 30B) for the functional element, wherein the conduits (34, 36) are attached to a plastic molded section (38) which is molded on the underside to the plate-shaped housing element (16). The conduits (34, 36) are surrounded by at least one retaining clip (44) which is fixed to the plastic molded section (38).

Description

Vehicle roof with a fixed roof element and a plastic molded section

Technical Field

The invention relates to a roof for a motor vehicle, comprising the features of the preamble of claim 1.

Background

Such a roof is known from the document DE 10 2017 105 268 A1 and comprises a fixed roof element which has a plate which forms a rigid plate-like housing element and which can be connected by its edges to peripheral parts fixed to the vehicle, for example to the roof side rail and the roof cross rail of the vehicle body. The panel is provided with screening means on its underside, which screening means may be formed by a roller blind. For driving the roller blind, an electric motor is provided, which drives the roller blind via a drive cable. On the underside of the plate, a plastic molding section is molded, which can be formed from a foamed or sprayed polyurethane material. A channel is formed in the plastic molded section, which channel receives a conduit for the drive cable concerned.

A problem in the vehicle roof described above is that the holding force exerted by the profiled section on the duct may be insufficient, so that the duct may come loose from the channel.

Disclosure of Invention

The object of the present invention is to provide a vehicle roof constructed according to the type mentioned at the outset, in which the drive tube is held securely on the profiled section.

According to the invention, this object is achieved by a vehicle roof having the features of claim 1.

The invention therefore proposes a vehicle roof comprising a fixed roof element which in turn has a rigid, plate-shaped housing element which can be connected to the vehicle body and on the underside of which a drive assembly for an adjustable functional element is arranged. The drive assembly includes a conduit for a drive cable for the functional element. The conduit is attached to a plastic profiled section which is moulded to the plate-like housing element at the underside. In order to secure the catheter substantially without loss to the plastic molded section, the catheter is surrounded by a retaining clip (umgriffen) which is secured to the plastic molded section. Thus, the retaining clip establishes a secure attachment of the catheter to the plastic molded section. At the same time, the assembly of the line is simple in design, since it merely has to be snapped into the retaining clip in order to attach it to the housing element.

In the production of the vehicle roof according to the invention, the plastic molding segments are molded onto the housing element in corresponding molding tools. Subsequently, at least one retaining clip is fixed to the plastic molded section. Alternatively, the retaining clip can also be formed as an insert during the molding process and thus be fixed to the plastic molding section during this process. When the retaining clip is fixed on the plastic molded section, the catheter can be snapped onto this plastic molded section. The vehicle roof or the fixed roof element is therefore equipped with a guide tube after the molding process in a simple manner and can be carried out in particular by an assembly worker without tools in a manual manner.

The installation of the guide tube for the fixed roof element preferably takes place in a cooling phase after demolding from the molding tool. At this point, there is good accessibility of the plastic molded section so that the conduit can be quickly equipped with less risk of error. High safety of an assembly worker is ensured. In addition, the idle time is fully utilized in the process. Since the tube is attached to the vehicle roof according to the invention only after the plastic molding section has been molded, the line can be a standard tube which does not require heat-resistant materials or special geometries.

The plastic molded section of the vehicle roof according to the invention is in particular a polyurethane foam section, which is molded onto the housing element according to the foaming method or the RIM (Reaction Injection Molding) method.

Preferably, the retaining clips are fixed to the plastic profiled section at uniform intervals along the conduit. The region of the plastic molded section to which the retaining clip is fastened and which is molded along the guide tube can absorb forces acting transversely to the cable axis when the drive cable concerned is operated. These regions can be formed by wall sections which are oriented perpendicularly to the plane of the housing element, i.e. project substantially perpendicularly downwards from the housing element.

In a preferred embodiment of the vehicle roof according to the invention, at least one retaining clip (which can be a metal clip or a plastic clip) has a clip section which retains the guide tube or surrounds the joining guide tube and a fixing section which fixes the retaining clip to the plastic molding section.

In a particular embodiment of the vehicle roof according to the invention, the plastic molded section has walls which are overlapped by the fastening section of the retaining clip. The fastening section is thus pushed onto the wall, so that it bears against the wall from both sides. The spikes (Dorn) of the fastening section preferably grip into or engage into the plastic molded section, so that the retaining clip is attached to the plastic molded section as a whole in a manner that is secure against loss.

Preferably, the clip section forms a loop shape for a catheter

So that it bears against the catheter in a form-fitting manner.

In addition, in an embodiment which simplifies assembly in particular, the clip section is additionally provided with a control lug which, during assembly, forms a lead-in ramp for the catheter. When the catheter is introduced via the actuating disk, the opening of the ring-shaped receiving section widens so that the catheter can be pressed into the receiving section.

In a particular embodiment of the vehicle roof according to the invention, the plastic molded section forms a channel which at least partially receives the guide tube and the retaining clip. The guide tube is thus guided in the profiled section and is secured there by means of at least one retaining clip. On the profiled section, the receptacle, i.e. the channel for the catheter, can be configured in a material and process-optimized manner.

In order to further reduce the risk of the duct becoming detached from the channel, in an embodiment of the vehicle roof according to the invention, a retaining nose is formed on the plastic molded section along the channel, said retaining nose overlapping the duct, that is to say said retaining nose protruding slightly into the free opening cross section of the channel and forming an undercut in which the duct is arranged.

The retaining nose constructed on the plastic moulding section can be formed by a corresponding slide (Schieber) of the forming tool used for producing the plastic moulding section or can also be forcibly formed after the moulding process.

Furthermore, the shrinkage of the plastic material used on cooling can also be used in the production of the retaining nose in order to produce very pronounced undercuts and nevertheless ensure the demolding ability. This can be achieved, for example, by the geometry of the profiled section or by the selection of the wall thickness and the root radius of the wall section, so that elasticity in the transverse direction is always ensured.

The holding force formed by the at least one holding clip and, if appropriate, the holding nose is selected to be so great that the catheter concerned is held reliably on the plastic molded section even under maximum load.

In particular when the functional element driven by means of the drive assembly is a screening element or also a cover element of a roof opening system, the plastic molding section preferably has at least two channels which each receive a conduit for a drive cable of the adjustable functional element. In this case, two channels are formed on both sides, in particular with respect to the vertical roof longitudinal center plane, in each of which a conduit for a drive cable is arranged. One of these conduits serves for guiding the drive section of the first drive cable, which drive section is located between the drive motor and the element to be driven. The drive cable drives the functional element at the first side. The other duct serves to guide the exposed section of the drive cable, which drives the functional element on the other side and has a free end on one side of the drive section of the first drive cable.

In a projection perpendicular to the plane of the housing element, the channels arranged on one side of the drive motor may intersect, that is to say they may intersect. In particular, it is advantageous in the region of the intersection of the conduits to provide retaining devices or retaining noses for the conduits only locally and/or on one side on the channel, since in this way the amount of plastic material required for the construction of the plastic profiled section can be kept low.

In order to keep the noise generation of the drive assembly low during operation, it is advantageous if the profiled section has a receptacle for a pipe end section of the pipe, which receptacle centers the pipe relative to the motor receptacle or relative to the guide rail. This ensures that the drive cable guided in the guide tube can be guided with precise position to the motor or to the guide rail for the functional element to be driven. Thus, a transition with low tolerances and a precisely centered fit can be achieved. A high positional accuracy and a small delay (Verzug) of the relevant positions with respect to each other are thus ensured. The receptacle on the plastic molding section for the pipe end section allows good control of the pipe end position concerned. Positioning errors and potential chatter locations (Ratterstellen) between the guide rails and the catheter involved or in the transition region between the motor receptacle and the catheter can be avoided.

Alternatively, it is also conceivable to center the transition between the guide tube and the guide rail by means of a plug-in connection which is arranged on the guide rail concerned and/or in a concentric recess in the region of the channel of the plastic molding section. It is also possible to provide guide elements which are integrally molded on the plastic molding section. These guide elements may allow a certain play in the region of the end of the guide tube, so that a self-centering, continuous and impact-free transition between the guide tube and the guide rail concerned is possible.

In a particular embodiment of the vehicle roof according to the invention, the adjustable functional element is a screening element, in particular a roof roller blind of the vehicle roof.

By guiding the guide tube over the plastic molded section, the drive cable can be guided in the vicinity of the housing element without significant bending in the direction of the roof height. Thus, force components which could possibly lead to a longitudinal bending of the drive cable concerned can be avoided as far as possible in the height direction of the vehicle roof under pressure load. The holding force exerted by the holding clip and, if appropriate, by the holding nose can therefore also be small. The holding force that has to be exerted on the conduit for the exposed end of the drive cable is smaller than the holding force that the conduit for the drive section of the drive cable has to exert between the drive motor and the functional element to be driven. On the shaping section, the receptacle, i.e. the channel for the respective line, can thus be configured in a material-and process-optimized manner.

Further advantages and advantageous configurations of the subject matter of the invention can be derived from the description, the drawings and the claims.

Drawings

Embodiments of the vehicle roof according to the invention are schematically shown in simplified form in the drawings and are further elucidated in the following description. The figures show:

fig. 1 is a perspective top view of a vehicle roof according to the invention with a fixed roof element;

FIG. 2 is a bottom view of the fixed roof element;

FIG. 3 is a perspective view of region III of FIG. 2;

fig. 4 is a sectional view of the fixed roof element along the line IV-IV in fig. 3; and

fig. 5 is a perspective cross-sectional view of the crossing region between two drive cables in region V of fig. 2.

Detailed Description

In the figures, a vehicle roof 10 is shown, which is designed as a fixed vehicle roof provided with a roof recess 12, in which a fixed roof element 14 is arranged, which is therefore mounted so as to be immovable relative to the vehicle body. As can be seen from fig. 2 to 5, the fixed roof element 14 comprises a housing element 16 which is made of a composite safety glass and forms the outer surface of the fixed roof element 14.

The fixed roof element 14 has a substantially rectangular see-through region 18 which can be concealed by means of a shading system 20 comprising a roof roller blind 22 as shading element. The roof roller blind 22 (which is a functional element of the vehicle roof 10) is guided in the guide rails 24 on both sides with respect to a vertical longitudinal roof center plane and can be adjusted by means of the pull-out roof frame 26 between a release position, in which the see-through region 18 is completely released, and a covering position, in which the see-through region 18 is at least partially covered by the roof roller blind 22. The draw canopy 26 is provided with a drive assembly 28 which comprises two

drive cables

30A and 30B which are each connected to a slide of the draw canopy 26 guided in one of the guide rails 24 and which are driven by a common drive motor 32 which is attached to the underside of the housing element 16 on the vehicle-head side of the see-through region 18.

Drive cables

30A and 30B are respectively guided in a conduit 34 between drive motor 32 and rail 24. This portion of the

drive cables

30A, 30B is the drive section. The exposed section of the

respective drive cable

30A or 30B is guided in a further conduit 36 between the drive motor 32 and the guide rail 24 which is located on a different side of the see-through region 18 than the slide of the draw canopy 26 driven by the

drive cable

30A or 30B.

A plastic molded section 38 is molded onto the underside of the housing element 16, which plastic molded section encloses the see-through region 18 in a frame-like manner and to which the guide rail 24 is fastened along the longitudinal edges of the see-through region 18. On the front side of the guide rail 24, two

channels

40 and 42 are formed on the plastic-molded section 38 on both sides with respect to the vertical roof longitudinal center plane, respectively, for the two

corresponding guide tubes

34 and 36 of the two

drive cables

30A and 30B, i.e. the

guide tubes

34 and 36 are received in the

channels

40 and 42 of the plastic-molded section 38.

In order to hold the

tubes

34 and 36 in the

channels

40 and 42, a plurality of holding clips 44 are provided along the

channels

40 and 42, respectively, which are each fastened to a respective side wall 48 of the

channel

40 or 42 concerned by means of a fastening section 46. As can be seen in particular from fig. 4, the fastening section 46 of the retaining clip 44 has a U-shaped profile and overlaps the side wall 48 of the

respective channel

40 or 42. The fastening section 46 has spikes 50 on its free edge, which are clamped into the plastic material of the plastic molding section 38. On the other side of the fastening section 46, a clamping section 52 is engaged, which is of annular design and surrounds the

catheter

34 or 36 involved in the coupling in a form-fitting manner. At its end facing away from the fastening section 46, the clamping section 52 has a lever 54 which forms a ramp or lead-in ramp on its inner side, via which the

catheter

34 or 36 concerned can be guided into the receptacle of the retaining clamp 44 formed by the clamping section 52. The open cross section of the receiving region of the retaining clip 44 formed by the clip section 52 is widened during introduction into the

respective catheter

34 or 36. Due to the elastic properties of the retaining clip 44, which is made of metal or plastic, the actuating tab 54 automatically returns into the clip section 52 after the introduction of the

catheter

34 or 36, so that the

catheter

34 or 36 concerned is in form-fitting engagement.

Along the

channels

40 and 42 of the plastic molded section 38, retaining noses 55 are molded on the side walls 48 of the

channels

40 and 42, said retaining noses overlapping the

respective conduit

34 or 36 and thus being an additional safeguard for this conduit.

As can be gathered from fig. 3, the

guide tube

34 or 36 has in each case a rim-like, widened tube end section 56 which is arranged in a corresponding receptacle 58 of the

respective channel

40 or 42, which receptacle is an arc-shaped recess of the

respective channel

40 or 42 which is bounded in the axial direction. By the interaction of the tube end sections 56 and the receptacles 58, a precise positioning of the

respective line

34 or 36 relative to the drive motor 32 or its drive pinion is ensured.

As shown in fig. 5, the two

channels

40 and 42 intersect such that the

conduits

34 and 36 intersect in a projection perpendicular to the plane of the housing element 16.

List of reference numerals

10. Vehicle roof

12. Roof recess

14. Fixed roof element

16. Housing element

18. Region of fluoroscopy

20. Shading system

22. Car roof rolling curtain

24. Guide rail

26. Drawing tent frame

28. Drive assembly

30A, B drive cable

32. Driving motor

34. Catheter tube

36. Catheter tube

38. Plastic molding section

40. Channel

42. Channel

44. Retaining clip

46. Fixing section

48. Side wall

50. Nail thorn

52. Clip section

54. Control piece

55. Nose holding part

56. Pipe end section

58. Receiving part

Claims

1. A roof for a motor vehicle, comprising a fixed roof element (14) comprising a rigid plate-like housing element (16), on the underside of which a drive assembly (28) for an adjustable functional element is arranged, which drive assembly comprises conduits (34, 36) for drive cables (30A, 30B) for the functional element, wherein the conduits (34, 36) are attached to a plastic profiled section (38) which is moulded to the plate-like housing element (16) on the underside, characterized in that the conduits (34, 36) are in surrounding engagement by at least one retaining clip (44) which is fixed on the plastic profiled section (38).

2. The vehicle roof as claimed in claim 1, characterized in that the retaining clip (44) has a clip section (52) which holds the guide tube (34, 36) and a fixing section (46) which fixes the retaining clip (44) on the plastic molding section (38).

3. The vehicle roof as claimed in claim 2, characterized in that the fastening section (46) overlaps a wall of the plastic-molded section (38) and preferably has at least one spike (50) which is clipped into the plastic-molded section (38).

4. The vehicle roof as claimed in claim 2 or 3, characterized in that the clip sections (52) form loop-shaped receiving sections for the conduits (34, 36) and preferably have actuating tabs (54) which, when assembled, form lead-in ramps for the conduits (34, 36).

5. The vehicle roof as claimed in one of claims 1 to 4, characterized in that the plastic molded section (38) forms a channel (40, 42) which at least partially receives the conduit (34, 36) and the retaining clip (44).

6. The vehicle roof as claimed in claim 5, characterized in that retaining noses (55) are formed on the plastic molded section (38) along the channels (40, 42), said retaining noses overlapping the ducts (34, 36).

7. The vehicle roof as claimed in one of claims 1 to 6, characterized in that the plastic molding section (38) is a polyurethane foam section which is molded onto the housing element (16) in a foaming process.

8. The vehicle roof as claimed in one of claims 1 to 7, characterized in that the plastic molded section (38) has at least two channels (40, 42) which each receive a conduit (34, 36) for a drive cable (30A, 30B) of the adjustable functional element.

9. The vehicle roof as claimed in claim 8, characterized in that the channels (40, 42) intersect in a projection perpendicular to the plane of the housing element (16).

10. The vehicle roof as claimed in one of claims 1 to 9, characterized in that the plastic molded section (38) has a receptacle (58) for a pipe end section (56) of the conduit (34, 36), which receptacle centers the conduit (34, 36) relative to a motor receptacle or relative to a guide rail.

11. The vehicle roof as claimed in one of claims 1 to 10, characterized in that the adjustable functional element is a screening element, in particular a roof roller blind (22).