Abstract:
Disclosed is a hood ( 1 ) for a convertible ( 2 ), comprising a tail end/roof segment ( 6 ), a front roof segment ( 8 ) and at least one central roof segment ( 7 ). The roof segments ( 6, 7, 8 ) comprise opposite roof frame profiles ( 9, 10, 11 ) which are symmetrical in relation to a longitudinal axis ( 33 ) of the vehicle and can be folded together in a Z-shape by means of a folding mechanism. In order to reduce the packing height of the hood ( 1 ), the roof segments ( 9, 10, 11 ) lie substantially on top of each other in a parallel manner in a folded position when the hood is open ( 1 ) and the outer roof frame profiles ( 10 ) of the at least one central roof segment ( 7 ) are rotated about the axis, which is at least approximately parallel to the longitudinal axis ( 33 ) of the motor vehicle, by means of a guide device ( 21 ) in relation to a position when the hood is closed and are displaced in the direction of the center of the vehicle.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
   This application is a 35 U.S.C. § 371 National Phase Entry Application from PCT/DE03/03666, filed Nov. 5, 2003, and designating the U.S. 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to a convertible top for a convertible vehicle of the type defined more specifically in the preamble of Patent Claim  1 . 
   2. Description of Related Art 
   In convertible vehicles in which the convertible top is folded when the top is down, i.e., open, and in which the convertible top is usually stored in a storage space in the rear-end area of the vehicle, the height of storage, i.e., the packing height, of the folded roof is of great importance because a large packing height limits the design freedom in the rear-end area of the vehicle and also greatly limits the possible dimensions of the luggage area. 
   DE 100 51 436 A1 discloses a multipart convertible top for a convertible vehicle, where the convertible top has a gasket apparatus with a movably mounted gasket for sealing a movable roof part with respect to an adjacent vehicle part, where the gasket is pivotably mounted with respect to the movable roof part and is pivoted into its sealing position in relation to the roof part when the movable roof part assumes a sealing position, and is pivoted into a storage position when the movable roof part is moved into a position without a sealing function. In particular, the movable roof part is a rear-end roof part which can be stored horizontally in the opposite direction in a storage space in the rear end of the vehicle under a front roof part when the top is down, in which case the gasket arranged on the side of the rear-end roof part for a side window is pivotable inward with respect to the rear-end roof part when the latter is stored. The gasket is pivotable in the direction of the middle of the vehicle such that the rear-end roof part and the front-end roof part can be positioned closely one on top of the other, so the height of the storage space can be reduced by approximately the size of the gasket. 
   The drive device provided for the pivoting movement of the gasket in DE 100 51 436 A1 is, for example, a coupling rod which couples the movable gasket to the movable roof part or a roof part executing a relative movement with respect to the gasket. 
   Another possibility for shifting an external roof frame part toward the middle of the vehicle in a top-down movement of a convertible folding top is described in DE 40 41 176 A1, which proposes a sealing element attached to the folding top for a gasket apparatus of the folding top, with the sealing element being in sealing contact with an edge area of a closed side window when the folding convertible top is up. In this case, when the top is put down, an outside area of the sealing element is shifted laterally inward via an adjustment device designed essentially as a rocker arm path. 
   However, with these known approaches, only a slight reduction in the storage height of the folded roof package can be achieved with a multipart top that folds in accordion fashion due to the fact that the respective roof parts are stored in opposite directions stacked one above the other. 
   SUMMARY OF THE INVENTION 
   The object of the present invention was therefore to create a convertible top for a convertible vehicle of the type described in greater detail above, such that its packing height is further reduced when the top is down and folded. 
   In accordance with the invention, said object is achieved through the features in the characterizing part of Patent Claim  1 . 
   In one embodiment of the inventive top, the roof segments are situated essentially one on top of the other with the curvature in the same direction when the top is down and folded and in which the outer roof frame profiles of at least one central roof segment are rotated about an axis that is at least approximately parallel to the longitudinal axis of the vehicle by means of a guide mechanism in comparison with a position when the top is up and are also shifted in the direction of the middle of the vehicle. This embodiment has the advantage of a particularly low height in the folded state, so that the stored top takes up very little storage space in the respective storage space provided for the convertible top. This results in the possibility of designing the storage space for the top to be smaller, which in turn permits greater design freedom in the rear-end area of the vehicle and creates an enlarged luggage space. 
   The outer roof frame profiles in the sense of the invention may have any design with regard to their cross section, their structure and their material composition and have sealing elements, e.g., in areas provided for contact with adjacent components such as side windows. 
   In a particularly preferred and visually attractive embodiment, the roof segments in the folded position lie one above the other in such a way that their respective curvature is facing away from the bottom of the vehicle, i.e., in the folded state their ends at the front and rear are each pointing downward. However, in deviation from this, is it also possible, while achieving a low packing height, for the roof segments to be folded in such a way that the curvature of each is facing the bottom of the vehicle. 
   A simple design of the rotation and displacement of the outer roof frame profiles of the preferably one central roof section can be achieved if the guide mechanism of the outer roof frame profile has a guide rod connected to the convertible top mechanism, with the outer roof frame profile being axially displaceably guided on the guide rod and being rotated with respect to its longitudinal axis, preferably at least approximately 180° in an axial movement with respect to the guide rod. 
   The guidance of the outer roof frame profile on the guide rod can be implemented in a simple manner by means of a sliding block which engages in a groove created in the form of a spiral in the guide rod, with the sliding block being connected to the kinematics of the mechanism of the convertible top via a coupling element for the axial displacement. 
   Alternately to this, it is also possible in accordance with another preferred embodiment for the guide mechanism of the outer roof frame profile of the at least one central roof segment to have a control rod connected to the mechanism of the convertible top, this control rod being pivotable about a pivot axis running parallel to the transverse axis of the vehicle and on which the outer roof frame profile is connected in an articulated manner by a lever arrangement, with the lever arrangement being pivotable via tilted axes which run at an angle to the pivot axis of the control rod in such a way that the outer roof frame profile is displaced in the direction of the center of the vehicle by pivoting of the control rod with respect to its longitudinal axis and/or and axis parallel to the longitudinal axis of the vehicle. 
   In deviation from this, however, those skilled in the art could also select a different design suitable for the respective application case for rotation of a component relative to a guide element. 
   In a preferred embodiment, the convertible top in accordance with the invention is a convertible top movable automatically from a top-down position into a top-up position or vice versa, with the movement of the convertible top being usually accomplished through a hydraulic drive which drives a mechanism of a convertible top that is to be understood in the present case as including both a carrying apparatus for a textile roof as well as a so-called collapsible hard top with essentially rigid roof elements and optionally includes a cover for a convertible top receptacle space and all the movable elements in this case. 
   In particular, the inventive embodiment of the convertible top is suitable for a so-called soft top roof in which the roof segments are designed with a flexible roof membrane. 
   In the case when at least the rear-end roof segment is designed with a flexible roof membrane which is accommodated between the outer roof frame profiles assigned to the rear-end roof segment and which encompasses a dimensionally stable rear window, a significant reduction in packing height of the convertible top in the stored and folded state can be achieved when the rear window and the outer roof frame profiles of the rear-end roof segment are converted into or out of the folded position in a movement in the same direction. 
   Due to the movement of the rear window and the outer roof frame profiles, which here represent the so-called main pillars, in the same direction, the convertible top can be implemented with much shorter lengths of cloth for the textile roof membrane, so that the area of the C pillar of the vehicle can also be designed to be very narrow. 
   A particularly small amount of material is needed in particular for the textile roof membrane when the rear window and the outer roof frame profiles of the rear-end roof segment are arranged essentially parallel to one another during their movement into or out of the folded position. 
   The movement of the rear window and the outer roof frame profiles of the rear-end roof segment such that the movement is in the same direction and preferably parallel can be implemented in a simple design via a connection of an outer roof frame profile of the rear-end roof segment to a 4-bar linkage mechanism connected in an articulated manner to a vehicle body, with two articulated joints of the 4-bar linkage mechanism being connected fixedly to the vehicle body and two articulated joints being provided on the respective outer roof frame profile. 
   Other advantages and advantageous embodiments of the object in accordance with this invention can be derived from the description, the drawing and the patent claims. 
   Two exemplary embodiments of a convertible top in accordance with this invention are depicted in simplified schematic diagrams in the drawing and described in greater detail in the following description. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The following is shown in the figures: 
       FIG. 1  shows a simplified three-dimensional view of an inventive convertible top for a convertible vehicle, the top being shown alone in the up [i.e., closed] position; 
       FIG. 2  shows a schematic side view of the convertible top in the up position in accordance with  FIG. 1 ; 
       FIG. 3  a sectional view of a first embodiment of a convertible top mechanism from the perspective of the center of the vehicle forward after initiating a top-down movement of the convertible top in accordance with  FIG. 1  and  FIG. 2 ; 
       FIG. 4  shows another side view of the convertible top in accordance with  FIG. 1  through  FIG. 3  during a continued movement phase of the top-down movement of the convertible top; 
       FIG. 5  shows another detailed diagram of the convertible top mechanism from a perspective on the left of the vehicle forward in the top-down movement of the top; 
       FIG. 6  shows another side view of the convertible top in accordance with  FIG. 1  through  FIG. 3 , with the top moving in the direction of the rear end of the vehicle; 
       FIG. 7  another sectional view of the convertible top mechanism from a perspective on the right side of the vehicle forward in the top-down movement of the convertible top; 
       FIG. 8  shows another movement phase of the convertible top in accordance with  FIG. 1  through  FIG. 7 , with the convertible top having moved further in the direction of the rear end of the vehicle in comparison to the diagram in  FIG. 6 ; 
       FIG. 9  shows a side view of the convertible top in accordance with  FIG. 1  through  FIG. 8  in the folded position in the completely down state; 
       FIG. 10  shows the convertible top which is in the folded position in  FIG. 9  in a three-dimensional view from a perspective on the left side of the vehicle forward; 
       FIG. 11  shows the convertible top in the folded position in accordance with  FIGS. 9 and 10  shown here in a top view; 
       FIG. 12  shows a simplified cross section along line I-I in  FIG. 5 ; 
       FIG. 13  shows a sectional top view of a second embodiment of the convertible top mechanism with the top in the up [i.e., closed] position; 
       FIG. 14  shows a side view of the convertible top mechanism in accordance with  FIG. 15  with the top in up position from a perspective at the center of the vehicle; 
       FIG. 15  shows another greatly simplified perspective view of the second embodiment of the convertible top mechanism with the top in the up position. 
       FIG. 16  shows the convertible top mechanism in accordance with  FIG. 15  during a first movement phase of the top after initiating a top-down movement; 
       FIG. 17  shows the convertible top mechanism in accordance with  FIG. 15  and  FIG. 16  during a movement phase of the top in which the top is moved further in the direction of the rear end of the vehicle; 
       FIG. 18  shows the convertible top mechanism in accordance with  FIG. 15  through  FIG. 17 , with the top being moved further in the direction of the rear end of the vehicle in comparison with the diagram in  FIG. 17 ; 
       FIG. 19  shows the convertible top mechanism in accordance with  FIG. 15  through  FIG. 18  in the folded position with the top completely down, and 
       FIG. 20  shows the convertible top in accordance with  FIG. 13  through  FIG. 19  in the folded position from a perspective at the left of the vehicle toward the rear end. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
     FIG. 1  shows a convertible top  1  for a convertible vehicle labeled as  2  on the whole, having a flexible roof membrane  3  comprised of multilayer textile material, for example, stretched between a rear-end main convertible top tension bar  4  in the up position of the top  1  and a dimensionally stable roof tip  5  provided on a front windshield frame. The flexible roof membrane  3 , only a detail of which is shown in  FIG. 1 , spans a rear-end roof segment  6 , a central roof segment  7  and a front roof segment  8  between pairs of symmetrically arranged outer roof frame profiles  9 ,  10 ,  11 , which are depicted for only one half of the vehicle in the drawing, assigned to these roof segments opposite a longitudinal axis  33  of the vehicle and form the edges of the roof segments. 
   In the area of the rear-end roof segment  6 , the flexible roof membrane  3  encompasses a dimensionally stable rear-end windshield  12 , with a frame, if necessary. 
   The outer roof frame profiles  9 ,  10 ,  11  are part of a convertible top mechanism by means of which the top  1  and thus the roof segments  6 ,  7 ,  8  can be collapsed and converted from a first end position (illustrated in greater detail in  FIG. 1  through  FIG. 3 , for example), which represents a top-down position, into a second end position (shown in  FIG. 9  through  FIG. 11  in greater detail, for example) which represents a folded position with the top  1  down. 
   Because the convertible top mechanism is designed identically on the two sides of the vehicle in the present embodiment, explanations concerning the elements shown here of the convertible top mechanism also apply to the elements arranged on the other side of the vehicle, which are not shown here but area symmetrical with the former. 
   As shown in  FIG. 1  and  FIG. 2 , for example, the respective outer roof frame profile  9  of the rear-end roof segment  6  forms a so-called main pillar which in the present case is connected to a 4-bar linkage mechanism  15  which is in turn connected in an articulated manner to two pivot points  13 ,  14  fixedly provided on the body and connected to an articulated chain  16 , which transmits the movement introduced into the main pillar  9  to other elements of the convertible top mechanism. 
     FIGS. 1 ,  2 ,  4 ,  6 ,  8  and  9  illustrate the embodiment and functioning of the 4-bar linkage mechanism  15  during various movement phases of the convertible top  1 . This 4-bar linkage mechanism is designed with a first angled lever  17  and a second angled lever  18 , each of which is rotatably mounted on a pivot point  13  and/or  14 , which is fixedly provided on the body, and on the outer roof frame profile  9  of the rear-end roof segment  6 . 
   The first lever  17  in the present embodiment is designed essentially in a U shape and is supported with one end of the leg on a joint  19  in an area of the outer roof frame profile  9  which is at the front in the up position of the top  1 , and with its other end of the leg is rotatably connected to the pivot point  13  that is fixedly provided on the body and is assigned to that end, this pivot point being arranged offset to the front and higher than the pivot point  14  of the second lever  18 , said pivot point also being fixedly provided on the body. 
   The second lever  18  is designed essentially in an L shape in the present case and is hinge-connected at its shorter leg to a bearing and/or joint  20  in an area toward the rear end of the outer roof frame profile  9  of the rear-end roof segment  6 , and is hinge-connected at the end of its longer leg to the pivot point  14  assigned to it and fixedly provided on the body. 
   For the movement of the convertible top  1  between its up position and its folded position, in which it is folded together with the elements of its convertible top mechanism and stored in a convertible top box, i.e., a receptacle space (not shown here), a drive  22  which is known per se is provided in the present case; this is an electro-hydraulic drive with a drive cylinder  23  and a drive rod  24  axially displaceable therein. In the embodiment shown here, it is advantageous for the flow of forces if the drive train  24  of the drive  22  is fixedly hinge-connected on the body to the leg of the first lever  17  leading to the pivot point  13 . However, the drive of the convertible top  1  may also act on any other spots in the convertible top mechanism that are regarded by those skilled in the art as suitable for the respective application case. 
   In the embodiment shown here, an articulated strap  25  comprised of two legs  26 ,  27  connects the rear window  12  to the 4-bar linkage mechanism  15  and is connected to the second lever  18  of the 4-bar linkage mechanism  15 . A first leg  26  of the articulated strap  25  is rigidly connected to the second lever  18  of the 4-bar linkage mechanism  15  and is aligned essentially axially to the longer leg thereof and inclined in the direction of the center of the vehicle. A second leg  27  of the articulated strap  25  is arranged essentially perpendicular to the first leg  26 , and is connected to the rear window  12  and/or a frame surrounding same and to the first leg  26  by means of a joint  28  so that it is pivotable about an axis of rotation running in the transverse direction of the vehicle. 
   In the embodiment of the convertible top  1  shown here, the rear-end main convertible top tension rod  4  is likewise mounted in an articulated manner on the second lever  18  of the 4-bar linkage mechanism  15 . 
   With the movement of the top between its end positions, the rear window  12  and the outer roof frame profiles  9  of the rear-end roof segment  6  are guided in a movement in the same direction, with the rear window  12  and the outer roof frame profiles  9  of the rear roof segment  6  being arranged essentially parallel to one another during the movement. 
   Because of this movement in the same direction, which is implemented advantageously by the 4-bar linkage mechanism  15  described here, but may also be implemented by another corresponding mechanism that executes deflections in other embodiments, a clearly smaller length of cloth is needed than is the case with convertible tops in which the main pillar and the rear window are rotated toward one another during the top-down and/or top-up movements of the convertible top. The packing height when the convertible top  1  is folded and stored is thus also reduced accordingly. 
   A clear reduction in the packing height of the convertible top in the folded state is also achieved with the convertible top  1  in accordance with the invention in that the roof segments  6 ,  7  and  8  are arranged essentially one on top of the other with the curvature in the same direction in the folded position when the convertible top  1  is down, and the outer roof frame profiles  10  of the central roof segment  7  are rotated in the direction of the center of the vehicle and are displaced in a manner to be explained in greater detail below with respect to a position in which the convertible top  1  is up. 
   In the embodiment in accordance with  FIG. 1  through  FIG. 12 , a guide mechanism  21  with a guide rod  29  motion-coupled to the convertible top mechanism for the outer roof frame profile  10  is provided for the outer roof frame profile  10  for rotation of said outer roof frame profile  10  of the central roof segment  7  in the direction of the center of the vehicle in a top-down movement and in the opposite direction in a top-up movement of the convertible top  1 , with the guide of the outer roof frame profile  10  on the guide rod  29  in this embodiment illustrated in greater detail in particular in  FIG. 3 through 8  being implemented by means of a combined axial and rotational movement in which the axial movement of the outer roof frame profile  10  with respect to the guide rod  29  takes place as a function of the movement of the main pillar transmitted by the articulated chain  16  and/or the outer roof frame profile  9  of the rear-end roof segment  6  and the drive  22 . 
   The axial movement of the outer roof frame profile  10  is converted into a rotational movement of the outer roof frame profile  10  of the central roof segment  7  by a guide, which is designed here as a spiral groove  30  provided in the guide rod  29 ; this is accomplished by the outer roof frame profile  10  sliding along the groove  30  by means of a sliding block  31  which is coupled via coupling element  32  to the articulated chain  16  and thus the kinematics of the convertible top mechanism. 
   From a comparison of the position of the outer roof frame profile  10  of the central roof segment  7  with respect to the guide rod  29  when the convertible top  1  is slightly down in accordance with  FIG. 3 , which shows the area of the guide rod  29  as seen from the center of the vehicle, during an additional movement phase for putting down the convertible top  1  which is shown in  FIG. 5  in an oblique view from the left rear-end area of the convertible vehicle, and during a continued stage of movement of the top-down movement of the convertible top  1  which is shown in  FIG. 7  from the perspective of a left vehicle front area of the convertible vehicle, it can be seen that the outer roof frame profile  10  of the central roof segment  7  is displaced along the guide rod  29  and in doing so is rotated about an axis parallel to the longitudinal axis  33  of the vehicle, ultimately rotating it 180° until reaching the folded position when the convertible top  1  is completely down ( FIG. 9  through  FIG. 11 ). 
   The connection between the outer roof frame profile  10  and the guide rod  29  may be accomplished, as shown in greater detail in  FIG. 12 , by means of a connecting strap  34  fixedly attached to the outer roof frame profile  10  and the sliding block  31 , but in other embodiments it is of course also possible to select a different comparable guide, and a kinematic reversal may also be provided. 
   In the preferred embodiment shown here, the guide rod  29  is connected in an articulated joint at one end to the front roof segment  8  and at the other end to the articulated chain  16  of the convertible top mechanism. The coupling element  32  which couples the sliding block to the movement sequence of the convertible top mechanism is designed like a rod and is mounted to pivot about a pivot axis running in the transverse direction of the vehicle; it is axially secured on the sliding block  31  by a ring body  35  which engages in a groove on the sliding block  31 , said ring body being pivotably mounted with the rod-like coupling element  32  to pivot about a pivot axis running in the transverse direction of the vehicle and rotationally movably mounted with respect to the sliding block  31  via a rotatability between the ring body  35  and the sliding block. The coupling element  32  is connected via the articulated chain  36  of the convertible top mechanism on its end opposite the sliding block  31 . 
   For accordion folding of the roof segments  6 ,  7 ,  8  in the top-down movement of the convertible top  1 , the articulated chain  16  of the convertible top mechanism is designed with a first articulated bracket  37  with two legs  38 ,  39  and a second articulated bracket  40  with the leg  38  and an additional leg  42 , with the joint bracket  37 ,  40  opening and/or closing in opposite directions to one another and being rotationally connected to one another in an articulated joint and being supported on the outer roof frame profile  9  of the rear-end roof segment  6 . 
   The first articulated bracket  37  which is connected in an articulated manner to the leg of the first lever  17  of the 4-bar linkage mechanism  15 , said leg facing the main pillar  9 , can thus transmit the movement initiated into the main pillar  9  via the second articulated bracket  40  to the guide rod  29  and the coupling element  32  and thus to the outer roof frame profile  10  of the central roof segment  7 . The leg  42  facing the guide rod  29  and the coupling element  32  is therefore designed as an articulated block, which is connected by the articulated element  36  to the coupling element  32  which guides the outer roof frame profile  10  of the central roof segment  7  on the guide rod  29  and is connected by another joint  43 , which is arranged in an area of the leg, i.e., the joint block  42  at the front in the up position of the convertible top  1 , is articulately connected to the guide rod  29 . 
     FIG. 13  through  FIG. 20  show another embodiment of the top mechanism with a guide mechanism  21 ′ for the outer roof frame profile  10  of the central roof segment  7 , said guide mechanism being modified in comparison with the embodiment in accordance with  FIG. 1  through  FIG. 12 . By means of this guide mechanism, the outer roof frame profile  10  is rotatable in the direction of the center of the vehicle with a top-down movement of the convertible top  1  and/or in the reverse direction with a top-up movement. 
   The guide mechanism  21 ′ has a control rod  47  which is coupled to the convertible top mechanism and is connected at one end by a joint  48  to the front roof segment  8  and/or with the side of the outer roof frame profile  11  of said front roof segment arranged on the respective side, which faces the center of the vehicle and can be pivoted about a pivot axis A 4  parallel to the transverse axis of the vehicle at the joint  48 . At its other end, the control rod  47  is connected in an articulated joint to the articulated chain  16  of the convertible top mechanism, with the leg  42  of the second articulated bracket  40  provided for connecting the guide rod  29  in accordance with  FIG. 1  through  FIG. 12  being replaced here by a leg  42 ′ having one less joint. 
   The outer roof frame profile  10  of the central roof segment  7  is connected in an articulated joint to the control rod  47  by a lever arrangement  49  which is pivotable about three tilted axes A 1 , A 2 , A 3 , with the tilted axes A 1 , A 2 , A 3  running at an angle to the pivot axis A 4  of the control rod  47  such that the outer roof frame profile  10  is displaced in the direction of the center of the vehicle and rotated with respect to the axis parallel to the longitudinal axis  33  of the vehicle from its position in the up position of the convertible roof  1  with a pivoting of the control rod  47 . 
   The lever arrangement  49  is designed with a first pivot lever  50  which connects the outer roof frame profile  10  to the control rod  47  in an articulated joint, with the first pivot lever  50  being pivotable about a first tilted axis A 1  with respect to the outer roof frame profile  10  of the central roof segment  7  and being pivotable about a second tilted axis A 2  with respect to the control rod  47 . The articulated connection of the first pivot lever  50  on the control rod  47  about the second tilted axis A 2  is arranged in an end area of the control rod  47  which faces away from the connection of the control rod  47  to the front roof segment  8 . The articulated connection of the first pivot lever  50  on the outer roof frame profile  10  about the first tilted axis A 1  is in a rear-end area of the outer roof frame profile  10  when the convertible top  1  is in the top-up position. 
   In addition, the lever arrangement  49  is designed with a second pivot lever  51  which connects the outer roof frame profile  10  of the central roof segment  7  to the front roof segment  8  and/or in the embodiment shown here, connecting it in an articulated joint to its roof frame profile  11  arranged on the respective side of the vehicle. The second pivot lever  51  here is pivotable about a pivot point D 1  with respect to the outer roof frame profile  10  of the central roof segment  7  by means of a ball joint  52 , indicated only schematically in  FIG. 13  through  FIG. 20 . With respect to the front roof segment  8 , the second pivot lever  51  is pivotable about a third tilted axis A 3 . 
   The second pivot lever  51  is connected to the front roof segment  8  by a joint  53  which is arranged on the side of the outer roof frame profile  11  of the front roof segment  8  facing the center of the vehicle in the rear-end area thereof, namely toward the rear end of the joint  48  for connecting the control rod  47 . The ball joint  52  for connecting the second pivot lever  51  to the outer roof frame profile  10  of the central roof segment  7  is arranged in an area toward the front of the outer roof frame profile  10  in the down position of the convertible top  1 . 
   The pivot levers  50 ,  51  of the lever arrangement  49  are each designed with a curvature, with the bends in the respective pivot levers  50 ,  51  being designed so that they no longer collide with other components, while the outer roof frame profile  10  of the central roof segment  7  describes a curve in a movement of the convertible top  1  between its end positions and is pivoted by 180°. 
   In the two embodiments of the convertible top mechanism described here, the front roof segment  8  and/or its respective outer roof frame profile  11  is/are tied into the kinematics of the convertible top mechanism in such a way that it is connected in an articulated manner at the rear end of the articulated connection of the guide rod  29  and/or the control rod  47  for the outer roof frame profile  10  of the central roof segment  7 , the segment and/or profile being connected to a rod  44  which leads to a front area of the outer roof frame profile  9  of the rear-end roof segment  6  and which also supports one of a plurality of convertible top tension bars  45  that extend under the roof membrane  3 . 
   With the preferred designs of the convertible top mechanism described here, the roof segments  6 ,  7 ,  8  can be brought into their folded position in such a way that the rear-end roof segment  6  is deposited first, the central roof segment  7  is deposited above that and the front roof segment  8  is situated at the top, with the roof segment  6 ,  7 ,  8  being arranged tightly one above the other and stored with a low packing height, the curvature in the stored position facing away from a bottom of the vehicle whose installed position is labeled as  46  in the figures.