CN113329897A

CN113329897A - Drive system for a movable roof part of a roof system of a motor vehicle

Info

Publication number: CN113329897A
Application number: CN202080008707.0A
Authority: CN
Inventors: M·马奎特
Original assignee: Baoshi Auto Parts Taicang Co ltd
Current assignee: Baoshi Auto Parts Taicang Co ltd
Priority date: 2019-01-11
Filing date: 2020-01-03
Publication date: 2021-08-31
Anticipated expiration: 2040-01-03
Also published as: DE102019215548A1; CN113286719A; CN113286716B; WO2020144117A1; CN113286716A; WO2020144114A1; CN113286719B; CN113365864B; WO2020144120A1; DE102019215541A1; DE102019215545A1; DE102019215550A1; CN113365864A; CN113329897B; WO2020144122A1

Abstract

The invention relates to a drive system having a guide rail arrangement which is fastened to a vehicle in a ready-to-assemble state and having a control mechanism which is provided for the controlled displacement of the movable roof part between a closed position, a ventilation position and an open position, wherein the control mechanism has a drive slide which can be driven in the guide rail arrangement and which engages for displacement of the movable roof part on a carrier strip which can be connected to the movable roof part. According to the invention, a fastening device is provided which is assigned to the carrier strip and which can be displaced as a function of the driving movement of the drive carriage between a fastening position, in which the carrier strip is fastened by means of the fastening device at least in the vertical direction in a form-fitting manner to the drive carriage, and a release position, in which the form-fitting fastening is released. The invention also relates to the use in a passenger car.

Description

Drive system for a movable roof part of a roof system of a motor vehicle

Technical Field

The invention relates to a drive system for a movable roof part of a roof system of a motor vehicle, having a rail arrangement which is fastened to the vehicle in a ready-to-assemble state and having a control mechanism which is provided for the controlled displacement of the movable roof part between a closed position, a ventilation position and an open position, wherein the control mechanism has a drive slide which can be moved in the rail arrangement and which engages for the displacement of the movable roof part on a carrier strip which can be connected to the movable roof part.

Background

Such a drive system is known from DE 102015201587 a 1. The known drive system is a component of a roof system, which is applied as a prefabricated structural unit in the blanked roof region of a passenger vehicle. The drive system has a track arrangement which is fixed to the vehicle in a ready-to-assemble state. Furthermore, a control mechanism is provided, by means of which the movable cover part of the cover system can be displaced in a controlled manner between a closed position, a ventilation position and an open position. For this purpose, the control mechanism has a drive slide which can be moved in a guide rail arrangement. The drive slider engages at a carrier strip which can be connected to a movable cover part.

Disclosure of Invention

The invention aims to provide the following steps: a drive system of the type mentioned at the outset is provided, which is improved with regard to crash safety.

This object is achieved by: a fixing device is provided, which is assigned to the carrier strip and can be displaced as a function of the driving movement of the drive slide between a fixing position, in which the carrier strip is fixed in a form-fitting manner at least in the vertical direction at the drive slide, and a release position, in which the form-fitting fixing is released. The invention provides a form-locking fastening between the carrier strip and the drive slide, which counteracts the tearing off of the carrier strip and of the cover part fastened thereto in the ready-to-assemble state in the event of a crash. In this case, the form-locking fastening functions in the same way, except for the operative connection provided for the displacement of the movable cover part between the carrier strip and the drive slide. For this purpose, according to the invention, a fastening device is provided which is assigned to the carrier strip. The securing device can be displaced between a securing position and a release position as a function of a driving movement of the drive slide provided for the displacement of the carrier strip between the closed position, the ventilation position and the open position. In the fixing position, the carrier strip is fixed to the drive carriage at least in the vertical direction by means of the fixing device in a form-fitting manner. The form-fitting fastening is preferably formed directly between the carrier strip and the drive slide and/or between a component provided for a secure connection between the carrier strip and the movable cover part and the drive slide. By the form-locking fixing at least in the vertical direction, it is avoided that: the carrier strip and the roof part fastened to it in the ready-to-assemble state are torn off in the vertical direction in the event of a crash and the interior of the motor vehicle is exposed upwards. In the release position, the aforementioned form-locking fastening is cancelled in contrast. The carrier strip can thereby be displaced between the closed position, the ventilation position and the open position by means of a driving movement of the drive carriage. In the closed position, the movable roof part is closed flush and aligned with the remaining roof of the motor vehicle. In the ventilation position, a rear region of the movable roof part is moved upward in the vertical direction. In the open position, the movable roof part is displaced upwards in the vertical direction and rearwards in the longitudinal direction, so that the roof opening of the motor vehicle is released. The fastening position of the fastening device preferably only assumes the closed position of the movable cover part or of the carrier strip and the corresponding displacement position of the drive carriage at the guide rail device. During the driving movement of the drive carriage for the displacement of the carrier strip in the direction of the ventilation position and/or the opening position, the securing device is simultaneously displaced into its release position. The direction and position data used, such as vertical, longitudinal and transverse direction, as well as front, rear, upper, lower, front, rear, lateral or the like, relate to the state of the drive system ready for installation on the motor vehicle and to the forward-oriented driving direction of the motor vehicle.

In one embodiment of the invention, the carrier strip is connected to a cover carrier by means of at least one fastening element, which can be firmly connected to the cover part, wherein the form-locking fastening is formed directly between the cover carrier and the drive slide. The design according to the invention ensures that the movable cover part, which can be firmly connected to the cover carrier, is fixed even in the event of a crash-related failure of at least one fastening element. For this purpose, the form-locking fastening is formed directly between the cover carrier and the drive slide by means of the fastening device. Preferably, the cover carrier is not releasably assembled with the movable top cover part. For example, the cover carrier can be joined to the underside of the movable cover part by means of a surrounding foam made of plastic or by contact with the foam. The carrier strip is assembled with the cover carrier by means of at least one fastening element. The at least one fastening element is preferably configured in the form of a screw for configuring a threaded connection between the carrier strip and the lid carrier. Preferably, a plurality of fastening elements of the same type are provided.

In a further embodiment of the invention, the fastening device has a first fastening element arranged on the lid carrier and/or the carrier strip and a second fastening element arranged on the drive slide, which interact for form-locking fastening in the fastening position and are spaced apart from one another in the release position. Preferably, the first fixing element is formed directly on the lid carrier and/or on the carrier strip. Alternatively, the first fixing element can be produced separately from the lid carrier and/or the carrier strip and thereafter be firmly connected to the lid carrier and/or the carrier strip. Preferably, the second fastening element is formed directly on the drive carriage. Alternatively, the second fastening element can be produced separately from the drive slide and thereafter be firmly connected thereto. In the fastening position, the first fastening element and the second fastening element cooperate in a form-fitting manner. This is not necessarily to be assumed in the sense of the present invention by a completely designed contact between the first fixing element and the second fixing element. More precisely, in the fastening position, a gap can be formed between the first fastening element and the second fastening element, which gap is initially closed by the inertial forces affected by the crash and by the resulting deformation of the drive system. In contrast, the first fixing element and the second fixing element are spaced apart from one another in the release position and preferably in the longitudinal direction, so that there is no overlap in the vertical direction. The release position is preferably always occupied when the drive slide is displaced in the direction of the ventilation position and/or the opening position starting from the closed position of the movable cover part or of the carrier strip. This embodiment of the invention enables a particularly simple construction.

In a further embodiment of the invention, the first fastening element is supported in the transverse direction on lateral support edge sections of the drive carriage over the entire travel path of the drive carriage. The lateral support of the first fastening element in the transverse direction prevents an undesired lateral offset movement of the first fastening element in the event of a crash. This ensures a defined positioning of the first fastening element relative to the second fastening element, so that a secure form-fitting fastening in the event of a crash is ensured. The entire travel path of the drive carriage is understood to be the travel path along the guide rail arrangement, which is necessary for the displacement of the carrier strip between the closed position and the open position.

In a further embodiment of the invention, the first fastening element is formed by a recess extending in the longitudinal direction and/or a projection extending in the longitudinal direction of the cover carrier and/or of a wall section of the carrier strip extending in the vertical direction. This embodiment of the invention enables a particularly simple and cost-effective design. The recess and/or the projection are preferably formed at a vertically lower underside of the lid carrier and/or of the carrier strip. Preferably, the lid carrier is made of sheet metal. The recess and/or the projection can in this case be produced particularly simply in terms of production technology, for example by means of stamping or grooving of the cover carrier at the respective location. If the first fastening element is formed on the carrier strip, the description of the lid carrier is preferably adapted in a corresponding manner to its design and to the production of the first fastening element in terms of production technology.

In a further embodiment of the invention, the second fastening element is formed by a wall section of the drive carriage, which is arranged at a lower side of the drive carriage located vertically below and extends in the transverse direction. This makes it possible to design the fastening device particularly space-saving. Since the installation height in the vertical direction can be saved by the arrangement at the lower side of the drive slide. If the first fixing element is formed by a recess extending in the longitudinal direction and/or a projection extending in the longitudinal direction of the wall section of the cover carrier and/or of the carrier strip extending in the vertical direction, the first fixing element, in the event of a crash, engages with the mentioned wall section of the drive slide at least in the vertical direction in a form-fitting manner.

In a further embodiment of the invention, the second fastening element is formed by a metallic or metal-reinforced wall section of the drive carriage. This ensures that: the fastening device is subjected to high loads in the event of a crash. In this way, a secure form-locking fixation of the cover carrier and/or the carrier strip in the event of a crash is achieved. Independently of this embodiment of the invention, the first fixing element is preferably also formed by a section of the cover carrier and/or of the carrier profile made of metal or reinforced with metal.

In a further embodiment of the invention, the drive slide is produced as a metal-plastic composite component and has a metal insert which is encapsulated at least in sections by plastic injection molding, wherein the second fastening element is a transverse bar wall of the drive slide which is formed by the metal insert or is reinforced by the metal insert. The crossbar wall extends in a transverse direction. A particularly advantageous design can be achieved by the production of the drive slide as a metal-plastic composite component and the associated design of the second fastening element. This is particularly the case with regard to the mechanical load capacity of the second fastening element.

The invention further relates to a roof system for a motor vehicle having at least one drive system according to the preceding description.

Drawings

Further advantages and features of the invention emerge from the claims and from the following description of preferred embodiments of the invention, which are illustrated on the basis of the drawings. Wherein:

fig. 1 shows an embodiment of the cover system according to the invention in a schematic perspective view, wherein the movable cover part occupies an open position;

fig. 2 shows a perspective exploded view of an embodiment of the drive system according to the invention for the roof system according to fig. 1;

fig. 3 shows a further perspective exploded view of the drive system according to fig. 2 in a rotated view;

fig. 4, 5, 6 show the drive system according to fig. 2 and 3, wherein the carrier strip provided for connection with the movable roof part of the roof system according to fig. 1 assumes a closed position (fig. 4), a ventilation position (fig. 5) and an open position (fig. 6);

fig. 7 shows the drive system according to fig. 2 to 6 in a schematic top view;

fig. 8 shows the drive system according to fig. 2 to 7 in a longitudinal section through a partial section along a section line VII-VII according to fig. 7 and in the direction of the line of sight to the fastening device;

fig. 9, 10 show the drive system according to fig. 2 to 7 in a representation corresponding to fig. 8, respectively, wherein the fixing means occupy different displacement states;

fig. 11 shows a drive slide of the drive system according to fig. 2 to 7 in a schematic perspective view;

FIG. 12 shows a metal insert of a drive slide in a view corresponding to FIG. 11; and is

Fig. 13 shows the drive slide according to fig. 11 in a schematic top view.

Detailed Description

The roof system 1 according to fig. 1 is provided for the roof region of a passenger vehicle. The cover system 1 has a movable cover part 2 and a carrier 3. The movable cover part 2 is displaceable relative to the carrier 3 between a closed position, a ventilation position and an open position shown in fig. 1. In the closed position, the movable cover part 2 is closed flush and aligned with a section of the cover region adjacent to the carrier 3. In the open position, the movable roof part 2 is displaced in the longitudinal direction X rearward and in the vertical direction Z upward, so that the roof opening 4 of the passenger vehicle is opened at least partially upward. In the ventilation position, the movable roof part 2 is moved upward from the closed position at a rear edge located behind in the longitudinal direction X.

For the above-described displacement of the movable roof part 2, the roof system 1 has two drive systems 5, which are arranged at opposite side regions of the loading ledge 3 in the transverse direction Y. The two drive systems 5 are functionally identical and are otherwise designed mirror-symmetrically to the vertical central longitudinal plane of the roof system 1. The two drive systems 5 are driven synchronously with one another by means of an electric motor, which is not shown in detail and is hidden underneath the front cover plate 6. For the transmission of force and/or movement between the electric motor and the two drive systems 5, a threaded pitch cable is provided in a manner known in principle. The right-hand drive system 5 is explained below with reference to the drawing plane of fig. 1 in accordance with fig. 2 to 10. The embodiment in question is adapted in a corresponding manner to the drive system 5 on the left side opposite in the transverse direction Y.

The drive system 5 has a rail arrangement 7 which, in the ready-to-assemble state, is firmly connected to the carrier 3 of the cover system 1. In the embodiment shown, the guide rail arrangement 7 is designed as a longitudinally extending, dimensionally stable hollow profile.

The drive system 5 furthermore has a carrier strip 8, which is connected to the underside of the movable roof part 2 in a manner which is also explained in more detail. In order to control the displacement of the movable cover part 2, the drive system 5 has a control mechanism with a drive slide 9 on the front side and a movable mechanism 10 on the rear side in the longitudinal direction X. For the controlled displacement of the movable cover part between the mentioned displacement positions, both the drive slide 9 and the movable mechanical device 10 engage at the carrier strip 8 in a manner which is also explained in more detail. The respective displacement positions of the carrier strip 8 accompanying the displacement position of the movable cover part 2 are referred to in a corresponding manner as a closed position, a ventilation position and an open position.

The drive slide 9 is coupled in a manner not shown in detail with the mentioned threaded pitch cable and can be driven in this respect by an electric motor along the guide rail arrangement 7. The drive carriage 9 can be moved in a sliding manner in a manner known in principle by means of slides which are not illustrated in detail and are arranged on opposite lateral sides on a guide track, not illustrated in detail, of the guide rail arrangement 7. For controlled displacement of the carrier strip 8 and thus of the movable cover part 2, the drive slide 9 engages in a region 11 in front of the carrier strip 8. The carrier strip 8 has for this purpose a first control cam 12 and a second control cam 13. The two control cams 12, 13 are integrally formed at the front region 11 and project laterally outwards in the transverse direction Y. The first control cam 12 is guided in a forced manner at a first control slide 14 of the drive slide 9. The second control cam 13 is guided by force at a second control slide 15 of the drive slide 9. The front region 11 has laterally projecting guide cams, not shown in detail, which are guided in a sliding manner on guide paths of the guide rail arrangement. The drive slide 9 has a wall portion 16 extending in the longitudinal direction X and in the vertical direction Z, on the inner side of which wall portion the

control slide

14, 15 is configured, which is located inside in the transverse direction Y. A coupling lever 17, which is coupled at the other end with the movable mechanical device 10, engages on the outer side of the drive slider 9, which is located externally in the transverse direction Y. The movable machine 10 has a guide slide 18 which, due to the coupling by means of the coupling linkage 17, can be moved at least in sections along the guide rail arrangement 7 together with the drive slide 9. For this purpose, the guide carriage 18 can run on the guide track of the guide rail arrangement 7 in a manner not described in detail. Furthermore, the mobile mechanism 10 has a mobile lever 19 and a control slide 20. The control slide 20 is guided in a sliding manner in a positively locking manner on a web guide 21 of the carrier strip 8 and is mounted in a rotationally movable manner on the movable lever 19. The movable lever 19 is mounted on the guide slide 18 and can be pivoted by means of a driving movement of the guide slide 18 guided in the guide rail arrangement 7 between a movable position (fig. 5, 6) raised in the vertical direction Z and a resting position lying flat (fig. 4). Depending on the driving movement of the drive carriage 9, the coupling rod 17 is either releasably connected to the drive carriage 9 or to an inner side wall of the guide rail arrangement 7. The guide slide 18 is accordingly either displaced together with the drive slide 9 or fixed relative to the guide rail arrangement 7 by means of the coupling rod 17.

In order to connect the carrier strip 8 to the movable roof part 2, a cover carrier 22 is provided in the embodiment shown. The cover carrier 22 is assembled to the underside of the movable roof part 2 by means of a plastic foam surround in a manner not shown in detail but known in principle. The plastic surrounding foam is here a PU surrounding foam. The connection between the movable roof part 2 and the cover carrier 22 cannot be released in this respect without destruction. In contrast, a releasable engagement connection by means of a plurality of fastening elements 24 is provided between the cover carrier 22 and the carrier strip 8. The fastening element 24 is evident in particular from fig. 4 to 6, wherein the cover carrier 22 is shown only in sections there (fig. 4) or is hidden from view (fig. 5, 6). The carrier strip 8 has a plurality of receiving openings 23 for the fastening elements 24, which are arranged at a distance from one another in the longitudinal direction X. For this purpose, the cover carrier 22 has corresponding receiving openings, which are hidden in fig. 2 and 3 only for graphical reasons.

Fig. 4 shows the displacement position of the drive system 5 corresponding to the closed position of the movable roof part 2. In the closed position, the carrier strip 8 lies flat together with the cover carrier 22 fastened thereto. The drive slide 9 occupies a forward end position relative to the guide rail arrangement 7. For displacement into the ventilation position shown in fig. 5, the drive slide 9 is moved in the longitudinal direction X rearward in the guide rail arrangement 7. In this case, the drive slide 9 is first coupled to the guide slide 18 by means of the coupling rod 17, so that the guide slide travels together with the drive slide 9. Due to the above-described positive guidance of the control cams 12, 13 in the

control rods

14, 15 of the drive slide 9, the interaction of the guide cams of the carrier strip 8 with the guide tracks of the guide rail arrangement 7 and the engagement of the movable mechanism 10 at the web guide 21, the carrier profile 8 is transferred into the tilted ventilation position, as is apparent from fig. 5. In the region of the control slide 20, the carrier strip 8 is movable in the vertical direction Z. Starting from the ventilation position, the carrier strip 8 is displaced with the cover carrier 22 fastened thereto into the open position shown in fig. 6 by means of a further rearward-directed travel movement of the drive slide 9. In this case, the coupling link 17 is released from the drive carriage 9 in a positively guided manner in a manner not described in detail and is fixed to the guide rail arrangement 7, so that the guide carriage 18 is fixed relative to the guide rail arrangement 7 when it is displaced into the open position. The movable lever 19 is held in its active position, in which the carrier strip 8 is guided to the control slide 20 by its web guide 21 in a sliding manner.

Subject to driving conditions, the roof system 1 is subjected to inertial forces, which can lead to high loads on the drive system 5. The inertial forces occurring in the event of an accident can in principle lead to failure of components of the drive system 5, as a result of which in particular the carrier strip 8, the lid carrier 22 and the movable cover part 2 connected thereto can be torn off. The tearing off of the movable roof part 2 is associated with an additional danger for the occupants of the passenger vehicle.

In order to counteract this, a fastening device A, B is provided, which is assigned to the carrier strip 8 and which can be displaced as a function of the driving movement of the drive carriage 9 between a fastening position, in which the carrier strip 8 is fastened by means of the fastening device A, B at least in the vertical direction Z in a form-locking manner to the drive carriage 9, and a release position, in which the form-locking fastening is released.

The form-locking fastening in the embodiment shown acts directly between the cover carrier 22 and the drive slide 9. For this purpose, the fastening device A, B is formed in a manner described in more detail on the lid carrier 22 and the drive slide 9.

In a non-illustrated embodiment, the form-locking fastening can be formed directly between the carrier strip 8 and the drive slide 9. In this embodiment, which is not shown, the fastening means A, B are respectively formed on the carrier strip 8 and on the drive slide 9.

The design herein has the following advantages: even in the event of an accidental loosening of the fastening element 24 or in the event of a crash-related failure, the movable roof part 2 is fixed at least in the vertical direction Z, since the fixing means A, B are formed directly between the cover carrier 22, which is not releasably foamed to the movable roof part 2, and the drive slide 9.

The fastening device A, B has a first fastening element a and a second fastening element B.

The first fastening element a is assigned to the lid carrier 22 and, in the embodiment shown, is formed directly on the lid carrier 22. The cover carrier 22 is made of sheet metal and is designed in the shape of a bent stamped component. The cover carrier 22 has an approximately L-shaped cross section and is formed by a horizontally oriented profile leg 25 and a vertically oriented profile leg 26. The

profile legs

25, 26 are oriented approximately at right angles to one another.

The first fixing element a is formed by a recess 27 of the cover carrier 22 extending in the longitudinal direction X. In other words, the first fixing element a is formed by a projection 28 of the cover carrier 22 extending in the longitudinal direction X. The recess 27 is punched out of a region of the cover carrier 22 which is located at the front in the longitudinal direction X. Here, the recess 27 and thus the projection 28 are also arranged at a wall section 26' extending in the vertical direction Z, which here depends on the vertically positioned profile foot 26.

The second fixing element B is formed by a wall section 29 of the drive slide 9, which is arranged at the lower side of the drive slide 9 lying below in the vertical direction Z and extends in the transverse direction Y.

The drive slide 9 is produced in the embodiment shown as a metal-plastic composite component V (fig. 11, 13). The drive slide 9 has a metal insert 30 in this respect, which is shown according to fig. 12. To form the drive slide 9, the metal insert 30 is partially encapsulated with plastic by injection molding. Starting from the initial configuration of the metal insert 30 shown in fig. 12, the ready configuration of the drive slide 9 shown in fig. 11 and 13 is thus formed. In the embodiment shown, the wall section 29 is a transverse bar wall of the drive carriage formed by the metal insert 30. The transverse rod wall 29 is oriented horizontally and extends in the transverse direction Y between the wall section 16 provided with the

control slide

14, 15 and a further wall section 31 lying opposite it at a distance in the transverse direction Y. The

wall portions

16, 31 can also be referred to as side walls and are integrally continuous.

The front region 11 of the carrier strip 8 is fixed in the transverse direction Y between the wall section 16 of the drive carriage and the other wall section 31. Correspondingly, the cover carrier 22 is suitable for fastening to the carrier strip 8, the inner side of which in the transverse direction Y is positioned in the region of the wall section 26' and thus in the region of a of the first fastening element at the inner wall 32 of the further wall portion 31.

Fig. 8 to 10 in particular show the functional manner of the fastening device A, B for the form-locking fastening of the movable cover part 2. Fig. 8 shows the displacement position of the drive system 5 corresponding to the closed position of the cover part 2. Said securing means A, B is in its securing position in the closed position occupation. In this fixing position, the first fixing element a and the second fixing element B cooperate in a form-locking manner in the vertical direction Z in such a way that a tearing off in the vertical direction Z of the cover part 2 of the cover carrier 22, of the carrier strip 8 screwed thereto and of the cover carrier 22, which is foamed unreleasably, is counteracted. In the fixing position, the crossbar wall 29 of the drive slider 9 is displaced forward in the longitudinal direction X into the recess 27. In other words, the protrusion 28 engages the cross-bar wall 29 below in the vertical direction Z. Upon a violent displacement of the roof part 2 in the vertical direction Z, the cover carrier 22 is correspondingly displaced upwards and relative to the remaining components and sections of the drive system 5, whereby a support of the projection 28 at the underside of the cross-bar wall 29 results. Thereby, a further violent displacement in the vertical direction Z of the lid carrier 22 and thus of the roof part 2 is counteracted.

In the embodiment shown, the fastening position of the fastening device A, B is assumed only in the closed position of the movable cover part 2. Accordingly, the above-described form-locking fastening between the cover carrier 22 and the drive slide 9 is cancelled both in the ventilation position (fig. 5) and in the open position (fig. 6). In this regard, the corresponding displaced positions of the securing device A, B are shown in fig. 9 and 10. If the drive slide 9 is displaced from the closed position in the direction of the ventilation position, the transverse rod wall 29 is moved away from the recess 27 in the longitudinal direction X, so that the form-locking fastening is cancelled (fig. 9). Accordingly, the first fastening element a and the second fastening element B are spaced apart from one another in the ventilation position. Here, the fixing elements A, B are spaced apart in the longitudinal direction X such that there is no overlap in the vertical direction Z. Correspondingly, it applies to the open position, as shown in fig. 10.

During the driving movement of the drive carriage 9, the inner wall 32 of the drive carriage 9 forms a lateral support wall section 33, at which the wall section 26' and thus the first fastening element a are supported in the transverse direction Y. This ensures, in particular, an improved positioning between the first fixing element a and the second fixing element B.

Claims

1. A drive system (5) for a movable roof part (2) of a roof system (1) of a motor vehicle, having a guide rail arrangement (7) which is fixed to the vehicle in a ready-to-assemble state and having a control mechanism which is provided for the controlled displacement of the movable roof part (2) between a closed position, a ventilation position and an open position, wherein the control mechanism has a drive slide (9) which can be driven in the guide rail arrangement (7), the drive slide (2) engaging for the displacement of the movable roof part at a carrier strip (8) which can be connected to the movable roof part, characterized in that a fixing device (A, B) is provided which is assigned to the carrier strip (8) and which can be displaced between a fixing position and a release position as a function of the driving movement of the drive slide (9), in the fixing position, the carrier strip (8) is fixed to the drive carriage (9) at least in the vertical direction (Z) in a form-locking manner by means of the fixing device (A, B), and in the release position, the form-locking fixing is cancelled.

2. Drive system (5) according to claim 1, characterized in that the carrier strip (8) is connected with a cover carrier (22) by means of at least one fastening element (24), which can be firmly connected with the cover part (2), wherein a form-locking fastening is configured directly between the cover carrier (22) and the drive slide (9).

3. Drive system (5) according to claim 1 or 2, characterized in that the fixing device (A, B) has a first fixing element (a) arranged at the lid carrier (22) and/or the carrier strip (8) and a second fixing element (B) arranged at the drive slide (9), which interact for form-locking fixing in a fixing position and are spaced apart from one another in a release position.

4. The drive system according to claim 3, characterized in that the first fixing element (A) is supported at a lateral support wall section (33) of the drive slide (9) in the transverse direction (Y) over the entire travel path of the drive slide (9).

5. Drive system (5) according to claim 3 or 4, characterized in that the first fixing element (A) is constituted by a recess (27) extending in the longitudinal direction (X) and/or a protrusion (28) extending in the longitudinal direction (X) of a wall section (26') of the cap carrier (22) and/or of the carrier strip (8) extending in the vertical direction (Z).

6. Drive system (5) according to one of the preceding claims, characterized in that the second fixing element (B) is constituted by a wall section (29) of the drive slider (9), which is arranged at the lower side of the drive slider (9) lying below in the vertical direction (Z) and extends in the transverse direction (Y).

7. Drive system (5) according to one of claims 3 to 6, characterized in that the second fixing element (B) is formed by a wall section (29) of the drive slider (9) which is made of metal or is metal-reinforced.

8. Drive system (5) according to claim 7, characterized in that the drive slide (9) is produced as a metal-plastic composite component (V) and has a metal insert (30) which is encapsulated at least in sections with plastic, wherein the second fastening element (B) is a transverse bar wall (29) of the drive slide (9) which is formed by the metal insert (30) or is reinforced by means of the metal insert (30).

9. Roof system (1) for a motor vehicle with at least one drive system (5) according to one of the preceding claims.