Receding folding top for a motor vehicle.

p0001The invention relates to a fold-away hood of a motor vehicle, having the features indicated in the preamble of the main claim.

p0002Such a folding top is already known from DE-OS 34 16 330. having a firmly connected to the convertible top rear window in a rear opening. The rear window made of glass may extend up into the side regions of the folding top. The rear window is supported on both sides by a support strut which bring about a tensioning of the folding top in closed position. When not in use, the folding top is introduced together with the rear window in a rear storage compartment, in the forced nearly pivots the rear window on the support struts. It is particularly disadvantageous that the rear window is not sufficiently held in the closed position. When driving over uneven road surfaces, the rear window can run around the articulation points of the struts tilting movements, the noise and cause a decrease in the voltage of the folding top after some time. The folding top is stretched over the rear window, thereby deforms accordingly. Due to manufacturing tolerances and wind loads, the rear window is also braced so that they can already break at low additional loads.

p0003From EP-A-0246201 a folding top with a glass rear window is known, in the closed position of the folding top is swung in front of a rear opening in the folding top from the inside rests on the edge region of the rear opening. The rear window is articulated pivotably on the web of a pivotable clamping bracket. At the upper edge of the rear window are attached with a front cross-linked belts which are tensioned during the closing of the folding top and thereby displace the rear window before the rear opening. When not in use, the folding top is introduced together with the two rear side windows in a rear receiving compartment, in the first pivots the rear window. A major disadvantage is the fact that the rear window is not sufficiently secured by the straps. For example, when driving over uneven road surfaces the belts are stretched by vertical movement of the rear window. After some time, therefore, the rear window is no longer sealed in the closed position of the folding top on to the inner edge region of the rear opening, so that moisture may penetrate into the vehicle interior.

p0004The invention addresses the problem of providing a retractable convertible top of a motor vehicle according to the preamble of the main claim, which may also have a large and curved glass rear window, which is only lightly loaded and held in precise position in the closed position of the folding top.

p0005This object is achieved by the features specified in the characterizing part of the main claim. It is particularly advantageous that the cross strap dissolved from the folding top rear window presses in the closed position of the folding top to the inner periphery of the rear opening without tensing the rear window. The relatively rigid, fixed to the hood frame cross bar prevents vertical movement of the rear window down even when driving over uneven road surfaces. Thus, the rear window can not perform movements upwards, the contact pressure of the rear window is only fixed accordingly. A firm applying the pivotable rear window of the crossbar and the folding top can already be achieved with a low contact pressure, which also ensures that no moisture penetrates through the rear opening in the vehicle interior. The rear window can for example be made of glass and provided with heating wires. In addition, the rear window may have a curved shape and the rear windows of cars without folding top have corresponding size. Is the soft top with a heated rear window made of glass provided, so the visibility is backward not impaired even in unfavorable weather conditions, where necessary, the rear window heater is on.

p0006Advantageous embodiments of the invention are the subject of dependent claims.

p0007An embodiment of the invention is illustrated by a drawing. Show it<ul><li>FIG. 1 is a vertical longitudinal section through the rear window of a motor vehicle with folding roof,</li><li>FIG. 2 the left rear portion of the rear window in a top view,</li><li>FIG. 3 is an enlarged section of the area I] II in Fig. 1, </li><li>Fig. 4 corresponding an enlarged view of the rear lower portion of the rear window in a Fig. 1 view</li><li>Fig. 5 attached to a tension bracket pivotally mounted rear window in the closed position of the folding top and in a raised position of the clamp and</li><li>Fig. 6 the swung-out of the raised position of the clamp in the rear receiving space rear window.</li></ul>

p0008The rear window shown in Fig. 1 in a vertical longitudinal section of a motor vehicle 1 with the folding top is assigned to a rear opening 3 of the folding roof second The folding top 2 can be fully inserted with its hood frame and the rear window separately arranged in a 1 located after the rear seats 4 receiving compartment 23rd In the illustrated closed position of the folding roof 2, the rear window 1 is swiveled in front of the rear opening 3, and abuts the edge area of ​​the rear opening 3 from the inside. In the embodiment 1, the rear window is in its rear lower portion about a transverse axis 5 pivotally formed in the web area of ​​a U-shaped tensioning bow 6th For this purpose, are mounted side by side with two laterally spaced support arms 7 at the rear lower portion of the rear window 2, which are pivotally supported at their projecting ends to the transverse axis of the fifth The connected to the rear lower region of the folding roof 2 clamping bracket 6, which biases the folding roof 2 in the closed position is, in the end regions of its in the closed position forwardly directed legs 8 of a body-fixed axis 9 pivotable upwards, runs in the transverse direction of the vehicle. presented in the Darge closed position, the front upper portion of the rear window 1 loaded by a locking latch 10 against the inner periphery of the rear opening. 3 The cross bracket 10 is adapted in the embodiment in the transverse direction to the contour of the curved rear window glass 1 and is located above a frame of the rear window 1 of this from the inside. In the closed position of the folding top 2 therefore the rear window 1 is supported over approximately the entire width of the crossbar 10th The two lateral ends of the crossbar 10 are secured in the described embodiment each have a connecting piece 11 at the rear region of a front tie rod 12th Respectively provided on one side of the vehicle front tensioning rod 12 is connected to a rear tie rod 13 in a joint 14 pivotably connected about a transverse axis. Each of the front and rear clamping bar 12, 13 form a Übertotpunktmechanismus over which the folding roof 2 is charged to the outside.

p0009The folding top and its hood frame, and the rear window and the clamping bars are designed to be symmetrical to the longitudinal axis. In FIG. 2, the left portion of the rear window 1 in plan view is shown. As can be 2 taken from the longitudinal axis due to the symmetry of FIG., Each have the laterally opposite front and rear tie bars 12, 13, and the two legs 8 in the pivoting region of the rear window 1 to a greater lateral distance than the lateral edges 15 of the rear window 1. Each of the rear end of the rear tie rod 13 is connected to one in the web region of the clamp 6 transverse axis of rotation 16 pivotally connected to the clamping bracket. 6 In the two side portions of the rear window 1, a roller 17 is arranged, for example made of plastic by about a transverse axis supported on the levers in each case. During retraction of the folding of the locking latch is moved and pivoted downward. The same with their carrying arms 7 about the transverse axis 5 einschwenkende into the receptacle rear window 1 is due to several of its gravity on the rollers 17, to avoid damage to the rear window 1 when introduced into the compartment.

p0010In Fig. 3, the area indicated by the dashed circle III in FIG. 1 is shown enlarged. The locking latch 10 is arranged in the illustrated closed position of the folding top 2 in an approximately perpendicular transverse to the rear window 1 level. Each of the hinge 14 of the front and rear clamping bar 12, 13 of the stirrup is disposed, in the embodiment below the rear window 1 in front of the plane. The joint 14 could also lie in the plane or slightly behind the plane, in the latter case, the frame 18 of the rear window 1 is as wide form, that the locking latch 10 when pivoting is not applied directly to the rear window 1 and the rear window 1 damaged , On the frame 18 an inwardly projecting resilient tongue 19 is formed which abuts on the locking latch 10 in the closed position of the folding roof 2 in the front upper portion and causes a locking of the transverse bow 10th In the exemplary embodiment is connected to the edge of the rear opening and with an outer frame 18 of the rear window 1 an inner, peripheral sealing lip, respectively 20, 20 'that are elastic. The outer sealing lip 20 at the edge of the rear opening cooperates externally with the rear window 1, while the inner sealing lip 20 'from the inside bears against the frame 18 to the fabric of the folding roof second The inner sealing lip 20 'has a top open water drain channel 21st

p0011The rear lower part of the rear window 1 is shown enlarged in Fig. 4 in a vertical longitudinal section. The fixed to the rear carrying arms 7 are formed to conduct current in the embodiment. The rear window glass 1 is provided with heating wires, which prevent on the rear window 1 or eliminate in heating mode even in unfavorable weather conditions humidity rainfall. For this purpose are the electrically conductive support arms 7 with the heating wires of the rear window 1 and the voltage source of the vehicle a circuit which switches, via a switch and is off. In the exemplary embodiment, the electrical connection of the voltage source is carried out with the carrier arms 7 pivotable contact switch 22, which abut in the closed position of the folding roof 2 to the electrically conductive support arms 7th

p0012In the closed position of the folding top the upper opening of the receiving compartment is covered by a cover not shown. Thus, the folding top with his hood frame, the tension bracket 6 and the rear window 1 in the receptacle can be introduced, the tension bracket 6 is shown in FIG. 5 from its roof closed approximately horizontal dash-dot position shown in the direction of the arrow up to the by solid pivot lines marked position. In this position of the clamp 6 of the lid is not shown about a rear transverse axis pivotable upwards.

p0013According to FIG. 6 now the folded folding top leaves with his hood frame, the tension bracket 6 and the rear window 1 in the arrow direction in the open receiving compartment 23 in the full lines Darge turned bring location. When swiveling in the compartment 23, the axis 9 of the clamp 6 is displaced downward into the receptacle 23rd For this purpose, the axis 9 is formed at a receiving compartment 23 opposite the body of the vehicle height-adjustable actuator 9 moves the shaft during the closing of the folding top by the top and upon opening of the folding top downwards into the receiving compartment. By shifting the axis 9 downward when inserting the folding top in the compartment of the interior of the receiving compartment 23 is utilized optimally. Of course, the axis 9 of the clamp 6 could be located on the vehicle body. Likewise, it is also possible that the rear window is not pivoted on the tensioning bow but to another component.