Abstract:
The invention relates to a cabriolet vehicle comprising a roof which is provided with lateral roof linkage parts and can be stowed away in the rear of the vehicle, said vehicle being embodied in such a way that at least one holding-down device acting on the roof linkage parts of the stowed roof is associated with the body of the vehicle.

Description:
REFERENCE TO RELATED APPLICATIONS  
       [0001]     This application is the United States national phase of Patent Cooperation Treaty application No. PCT/DE05/001326, filed Jul. 28, 2005, which claims priority to German patent application No. DE 10 2004 041 539.0, filed Aug. 27, 2004, the entire content of both of which is incorporated herein by reference. 
     
    
     FIELD OF THE INVENTION  
       [0002]     The invention relates to a convertible vehicle comprising a roof which can be stowed in the rear vehicle region. More particularly, the present invention relates to a hold down device for retaining the top in an open position.  
       BACKGROUND OF THE INVENTION  
       [0003]     Convertible automotive vehicles include retractable roofs that are movable between a closed position covering a passenger compartment and an open position disposed in a storage space behind the passenger compartment. While driving with the roof in the open position, vibrations or bumps may cause parts of the roof to rub against each other resulting in premature wear.  
         [0004]     To secure the stowed roof against such movements and also against an uncontrolled unfolding of the roof, it is known to provide holding-down devices for the positional securing of the roof stowed in the car body. For example, they can be associated with a top storage well cover which engages over the stowed roof. Such holding-down devices, however frequently press on the cover material, which again promotes wear. In addition, it is often desired as part of simplification and weight saving and optimization of the trunk volume to dispense with such a top storage well cover, in particular when the front region of the actual roof adjoining the windshield frame when the roof is closed remains unturned in the stowed state and substantially fills up the inlet opening.  
         [0005]     It is the underlying problem of the invention to achieve a securing of the open roof which is as advantageous as possible in a generic convertible vehicle.  
       SUMMARY OF THE INVENTION  
       [0006]     One or more holding down devices for the roof is or are formed by the configuration of a convertible vehicle in accordance with the invention independently of the presence of a top storage well cover. In addition, an abrading contact between the holding down device, on the one hand, and the roof cover or a painted surface of a fixed roof part, on the other hand, is prevented by the action on lateral roof linkage parts of the stowed roof. The contact surface of the holding down device at the roof linkage part must not be visible when the roof is closed.  
         [0007]     A plurality of holding down devices can be realized per vehicle side without any great effort, which can effect a particularly good roof securing.  
         [0008]     If each holding down device includes a pressure piece which can be pivoted open onto the roof linkage parts from above, the pressure device can be pivoted in through the inlet opening during the roof passage without restricting the inlet opening. The pressure nevertheless acts downwardly in the outwardly pivoted state and secures the roof against upward movements. The pressure piece can advantageously be angled such that it engages around the roof linkage at least partially and therefore also secures the latter against lateral movement.  
         [0009]     A particular saving in moving parts and thus also a weight saving results when, in a dual function, the linkage keeps a trimming part for the covering or releasing of a part of an inlet opening of the roof movable into the car body. No separate linkage is required for this.  
         [0010]     The linkage can particularly favorably be held in flat contact at a rear wall bounding the passenger compartment such that it holds the trimming part in a releasing position in a location beneath the plane of the inlet opening displaced at least partially with respect to its covering position in the direction of a vertical longitudinal central plane of the vehicle, set upright and extended transversely to the vehicle, with it being pivotable outwardly from this position into an intermediate position set upright. An optimization of the trunk is thus achieved with a simultaneously maximum available movement space for the roof.  
         [0011]     Provided the trimming parts have been pivoted inwardly in a releasing position from an intermediate position set upright, in particular the trimming parts can then be pivoted outwardly with the roof stowed without colliding with the roof peak, even if the roof peak reaches closely up to the trimming parts initially still disposed in the released position. This permits a very favorable stowage position moved far to the front for the roof.  
         [0012]     If, with the roof open, the front roof end connected to a windshield frame with the roof closed is stowed in a constant orientation and if its side facing upwardly with a closed roof forms a visual termination surface for a substantial part of the middle region of the inlet opening, the roof end falls off toward its transverse sides with a customary vehicle design so that the use of trimming parts with the holding down devices in accordance with the invention can particularly be realized with good visual and mechanical aspects in these marginal regions. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0013]     Further advantages and features of the invention result from an embodiment of the subject matter of the invention shown schematically in the drawings and described in the following descriptions.  
         [0014]      FIG. 1  is a schematic, perspective view of the rear vehicle region of a convertible vehicle in accordance with the invention broken off toward the vehicle front and rear with a roof stowed in the car body and with a trimming part disposed in the covered position at each transverse side, with the pivot linkage for the trimming part having two holding down devices for the roof linkage;  
         [0015]      FIG. 2  is a section of the vehicle of  FIG. 1  broken off at the vertical longitudinal central plane after pivoting of the trimming part around a transverse vehicle axis into an intermediate position standing upright;  
         [0016]      FIG. 3  is a similar view to  FIG. 2  during the inward pivoting of the trimming part from the intermediate position into the released position and simultaneous release of the holding down devices from the roof linkage;  
         [0017]      FIG. 4  is a similar view to  FIG. 3  with a further progressing inward opening;  
         [0018]      FIG. 5  is a similar view to  FIG. 4  with a trimming part pivoted almost into the released position and holding down devices displaced out of the orbit of movement of the roof linkage;  
         [0019]      FIG. 6  is a view of the trimming part and holding down devices from the rear in a position in accordance with  FIG. 2  locked via a conical pin-type lock;  
         [0020]      FIG. 7  is a similar view to  FIG. 6  in the position of the holding down device in accordance with  FIG. 4 ; and  
         [0021]      FIG. 8  is a similar view to  FIG. 7  in a completely inwardly pivoted position of the holding down device similar to that of  FIG. 5 . 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0022]     Referring to the figures, a convertible vehicle is indicated at  1  in accordance with the invention, which can be either a four-seater or a five-seater vehicle having a rear seat or a two-seater. The vehicle  1  includes a roof  2  that is movable between a closed position covering a passenger compartment and adjoining a windshield frame and an open position disposed in a storage space behind the passenger compartment. The roof  2  may be in the form of a retractable hard top or a soft top.  
         [0023]     The roof  2  includes lateral roof linkage rails or parts  12 , which extend longitudinally in a direction of travel F and along opposite sides of the vehicle  1 . The lateral roof linkage parts  12  generally provide the connection between the roof  2  and main bearings arranged in the car body  4  and partly hold a plurality of roof parts to one another in the manner of lateral frame parts. The roof  2  can be stowed in the open position in a rear vehicle, for which purpose an inlet opening  3  into the car body  4  is provided which the roof  2  passes through completely or at least substantially during its stowing.  
         [0024]     The roof  2  can be moved manually or fully automatically or semi-automatically.  
         [0025]     In the present embodiment, the roof  2  can be stored in the car body  4  in a “Z fold” configuration, wherein the front roof end  5  connected to a windshield frame in the closed state maintains its orientation in the stowed state, with outer side  6  facing upward in both the stowed position and the closed state.  
         [0026]     The transverse edges  7  of the front roof end  5  fall off due to the raised roof shape. When the region of the front roof end  5  at the middle with respect to the transverse direction of the vehicle is approximately disposed in the plane of the inlet opening  3 , the transverse edges  7  therefore project further downwardly into the car body  4 . With the roof  2  open, its upwardly facing side  6  can itself form a visual termination for a substantial part of the middle region of the inlet opening  3 . A cover which engages over or similar can then be omitted here. Due to the falling off transverse edges  7 , in contrast, a separate visual cover is advantageous outwardly, but not compulsory.  
         [0027]     In the illustrated embodiment, a movable trimming part  8  is therefore shown at each side which is movably held at a linkage  9  transverse to the vehicle and parallel to a rear wall  11  bounding the passenger compartment to the rear. Depending on the course of this rear wall  11 , transverse to the vehicle therefore does not necessarily mean an angle of 90° to the longitudinal axis of the vehicle. The linkage  9  simultaneously serves the movement of one or more holding down devices  10 ,  10   a  which each act, with an open roof  2 , via an elastically deformable pressure body  13 ,  13  acting as a buffer on lateral roof linkage parts  12  of the stowed roof  2 . The buffer  13 ,  13   a  is angled and its one limb  14 ,  14   a  engages around the roof linkage part  12  such that it is also secured against movement in the transverse direction of the vehicle. With a simultaneous forming of two holding down devices  10 ,  10   a , which is only shown by way of example here, the limbs  14 ,  14  can be disposed opposite one another in the securing position to thus counteract a transverse movement of the stowed roof  2  to any side.  
         [0028]     The linkage  9  for the holding down devices  10 ,  10   a  and the trimming part  8  here includes a four-bar linkage  15 ,  16 ,  17 ,  18  for its inward and outward pivot movement transverse to the vehicle  1 . A single-bar linkage is alternatively possible, in particular when a large vehicle width is available.  
         [0029]     The pressure piece  13  is arranged at the outer lever H 1  of the four-bar linkage  15 ,  16 ,  17 ,  18  and is thereby pivotable open from above onto the roof linkage part or parts  12 . In the embodiment, the same relationships are present at both vehicle sides; a one-side holding down device  10 ,  10   a  may also possibly be sufficient for a pure securing of the roof.  
         [0030]     Since, in the outward displacement of the holding down device or devices  10 ,  10   a , the linkage  9  displaces the latter with a component in the transverse direction of the vehicle, the lateral passage space is vice versa free for the roof linkage parts  12  with inwardly pivoted holding down devices  10 ,  10   a . No adaptations therefore have to be made to the roof  2 ; the configuration in accordance with the invention can also be retrofitted on existing convertible vehicles.  
         [0031]     For the movement of the holding down device  10 ,  10   a , a separate actuator or (electric) drive  19  may be provided which, for example, acts on one of the levers H 1 , H 2  via a pull-push bar  20 .  
         [0032]     To prevent an unintentional movement of the holding down device  10 ,  10   a  from its securing position, the outer lever H 1  of the four-bar linkage  15 ,  16 ,  17 ,  18  can be held down by the inner lever H 2  via a protruding arm or force communicator  21 , whereby the four-bar linkage is also secured when the drive  19  is associated with the inner lever H 2  of the four-bar linkage arranged more closely to the longitudinal central plane. The force communicator  21  can be made simply as a shaped part at the inner lever H 2  which presses onto the outer lever H 1  in the intermediate position or covering position. An upwardly directed force on the holding down device or devices  10 ,  10   a  can then be absorbed via the blocked drive  19 . As an additional securing, which also permits a drive  19  when idling, a conical pin-type lock  22  is provided into which a co-moved axle stump  23  of a lever H 1 , H 2  engages in the securing position.  
         [0033]     The effort for the drive  19  and the linkage  9  is minimized here in that they also move and support the trimming parts  8  in a dual function.  
         [0034]     The trimming part  8  can be pivoted upwardly out of the covering, substantially horizontal position in accordance with  FIG. 1  around an axis  24  disposed transversely to the vehicle  1  into an intermediate position disposed upright ( FIG. 2 ).  
         [0035]     This intermediate position permits the following inward pivoting via the four-bar linkage  15 ,  16 ,  17 ,  18  also moving the holding down device  10 ,  10   a  ( FIG. 3 ,  FIG. 4 ) to reach the released position of the trimming part  8  and of the holding down device  10 ,  10   a  shown in  FIG. 5 . A superimposed translatory and rotary movement is also possible in dependence on the orientation of the trimming parts  8  in the released position (here facing toward the center).  
         [0036]     The drive  19  can also effect the pivoting of the trimming part  8  around the axis  24  via a corresponding force deflection; for this purpose, alternatively, a second drive or a compulsory movement with spring force assistance can also be provided. The pivot axis  24  is advantageously pivotable inwardly and outwardly together with the trimming part  8 , just like the holding down device  10 ,  10   a  is moved along in a compulsory manner with this transverse displacement.  
         [0037]     The holding down device  10 ,  10   a  secures the lateral roof linkage parts  12  both in the intermediate position and in the covering position of the trimming part  8  and is thus independent of the further pivoting around the axis  24 .  
         [0038]     Contrary to what is shown in the embodiments, the trimming parts  8  can also pivot from the intermediate position to the rear and then cover a region disposed further to the rear. The holding down device  10 ,  10   a  does not have to be changed for this.  
         [0039]     The invention has been described in an illustrative manner. It is, therefore, to be understood that the terminology used is intended to be in the nature of the words of description rather than of limitation. Many modifications and variations of the invention are possible in light of the above teachings. Thus, within the scope of the appended claims, the invention may be practiced other than as specifically described.