An open roof construction for a vehicle

Abstract: An open roof construction for a vehicle having a roof opening in its fixed roof comprises a closing element for selectively closing or at least partially opening said roof opening by moving the closing element in rearward direction. A drive unit, electronic control means and a mechanism disposed between said drive unit are intended for moving the closing element. Wind deflection means disposed near an edge of the roof opening deflects the air flow when the vehicle is driving. Driving means are connected to the wind deflection means via a transmission. The control means includes operating means, or it can be connected to measuring means for measuring condition parameters, and it is arranged for adjusting the wind deflection means with the aid of the driving means on the basis of the condition parameters.

Description: The present invention relates to an open roof construction for a vehicle according to the preamble of claim 1. An open roof construction of this type is known from DE 195 49 200 A. The wind deflection means consists of a wind deflector which is operated by a corresponding electric motor to adjust the position thereof. The object of the present invention is to further improve the open roof construction of the kind referred to in the introduction. In order to accomplish that objective, the open roof construction according to the invention has the features of the characterizing portion of claim 1. In this manner the wind deflection means and the sun screen comprise a common drive unit, wherein the connecting element is preferably arranged in such a manner that the wind deflection means are only adjustable near the open position of the sun screen, so that the adjustments of the sun screen which are necessary for adjusting the wind deflection means will be hardly noticeable, if at all. Of course it would also be possible to disconnect the sun screen temporarily when adjusting the wind deflection means. The driving means for the wind deflection means makes it possible to adjust said wind deflection means, manually or automatically, for example, to the respective conditions, such as the weather, the speed, the position of the closing element or the like, in order to achieve an optimum operation of the wind deflection means. Automatic adjustment of the wind deflection means can be achieved if the control means can be connected to measuring means for measuring condition parameters and if they are arranged for adjusting the wind deflection means with the aid of the driving means on the basis of said condition parameters. The possibility of adjusting the wind deflection means on the basis of individually selected condition parameters enables an optimum adaptation of the position or the setting of the wind deflection means to the respective condition parameter(s). Thus it is possible to select the speed of the vehicle as a condition parameter, whereby it can be determined by testing how to set the wind deflection means in dependence on the speed of the vehicle. Also other control parameters can be selected, of course, such as the position of the closing element, weather parameters and the like. In this manner it is possible to achieve an optimum comfort in the vehicle under varying conditions. In the case that the wind deflection means comprise a wind deflector, the angle of inclination and/or the longitudinal position of the wind deflector are preferably adjustable. The invention will be explained in more detail hereafter with reference to the drawings, which illustrate a number of embodiments of the open roof construction according to the invention. Figs. 1, 2 and 3 are schematic longitudinal sectional views of a first embodiment of the open roof construction according to the invention, in three different positions thereof. Fig. 4 is a perspective, exploded view of the parts used for driving the wind deflector of Figs. 1 - 3. Figs. 5 - 7 are longitudinal sectional views corresponding with Figs. 1 - 3 of a part of a second embodiment of the open roof construction according to the invention. The drawings, and in the first instance Figs. 1 - 3, show the fixed roof 1 of a motor vehicle, such as a passenger car, wherein an opening 2 is formed in fixed roof 1 for the purpose of receiving an open roof construction. The open roof construction comprises a frame 3 or similar stationary means to be mounted on the vehicle for movably supporting a closing element 4, in this case in the shape of a rigid, transparent panel. Closing element 4 may also be made up of a folding cover, or be louvred or the like. Panel 4 can be adjusted between a closed position, in which roof opening 2 is closed, and an open position, in which position the roof opening is at least partially opened. In the illustrated case, panel 4 can be moved slightly downwards from the closed position (see Fig. 1), and rearwards from there to a position under fixed roof 1 (see Figs. 2 and 3). Additional or alternative movements, such as rearward movement above fixed roof 1, are also possible, of course. A motorized drive unit 5, in this embodiment in the form of an electric motor mounted on the front of frame 3, is provided for moving panel 4. The movements of panel 4 are effected via mechanisms (not shown). The open roof construction may comprise its own control means for controlling the movements, but it is also possible to integrate the control means of the open roof construction with the central onboard computer of the vehicle. In both cases the control means will include measuring means for measuring condition parameters, such as the vehicle speed, which is already measured as standard by the speedometer of the vehicle. This condition parameter is used as an input parameter for the control. Wind deflection means are provided, in the shape of a wind deflector 6 in the illustrated embodiment, which wind deflection means functions to deflect the wind over roof opening 2 when driving with panel 4 in the open position. Said wind deflector 6 is mounted on frame 3, inwardly of roof opening 2. Said wind deflector 6 is only needed in the rearwardly moved positions of panel 4, and in those cases it can be moved from an inoperative position as shown in Fig. 1 to an operative position as shown in Figs. 2 and 3. In most cases the movement of wind deflector 6 between the positions shown in Figs. 1 and 2 takes place by means of panel 4, which operates an arm 7 (see Fig. 4) when panel 4 is being opened or closed. A comparison of Figs. 2 and 3 shows that the position of wind deflector 6 has been changed without moving panel 4, which is in the entirely open position. This change of the position of wind deflector 6 has been effected by separate driving means under the control of the aforesaid control means, whereby it is determined on the basis of the measured condition parameter(s) which position of wind deflector 6 is most favourable. Fig. 4 shows the means for adjusting the wind deflector. The wind deflector shown in this figure is of a well-known type, which hardly needs explaining, if at all. The only thing that matters is the fact that the position of wind deflector 6 (height and angle) is determined by the angle of arm 7, whereby a limiting element (not shown) determines the maximum angular movement in upward direction of arm 7. As is schematically indicated with dimension A, adjustment of the angle of arm 7 takes place by adjusting a lower pivoting point 8 of the arm in longitudinal direction, as a result of which the distance to the limiting element (not shown) is changed and consequently the angle of arm 7 is adjusted. In the illustrated embodiment, the driving means for adjusting the wind deflector 6 is combined with the driving means for a sun screen 9 provided under panel 4, which is adjusted electrically rather than manually in this case, therefore. To this end an electric motor 10 is mounted on the rear side of the frame, which engages, by means of pressure-rigid driving cables 11, separately mounted edges 12 of the sun screen 9, which also function to guide the sliding movement of sun screen 9 in further guide rails (not shown) of the open roof construction on either side of roof opening 2. A pressure-rigid connecting cable 13 is provided on either side of frame 3 for providing a connection with the arm 7 of wind deflector 6, which cable is connected, via a mounting element 14, to pivot point 8 of arm 7 at its front end. Connecting cable 13 comprises a catch element 15 at its rear end, which can be engaged by a mating control element 16 on driving cables 11 for adjusting connecting cable 13, and thus wind deflector 6, in one direction. Adjustment in the other direction is effected by a spring element (not shown). Forced adjustment in two directions is also possible, of course. As is shown in Figs. 2 and 3, adjustment of wind deflector 6 is effected by means of a small movement of sun screen 9 near its rearmost position. Fig. 2 shows the position in which the operating elements 16 of driving cables 11 of sun screen 9 just engage catch element 15 of wind deflector 6. In that position, sun screen 6 has disappeared almost entirely into the space present between fixed roof 1 and the roof lining of the vehicle. A small further movement in rearward direction of the sun screen 9, for example over a distance of 1 - 2 cm, will result in adjustment of wind deflector 6 from one extreme operative position to the other extreme operative position. A smaller movement of sun screen 9 will result in adjustment to intermediate positions of wind deflector 6. The control system of the open roof construction or of the vehicle may be programmed so that when an adjustment of wind deflector 6 is required, sun screen 9 will automatically be moved from a central position to the nearly closed position for controlling wind deflector 6. Also other control possibilities are conceivable, of course. Figs. 5 - 7 show a second embodiment of the wind deflector 6, whereby the adjustment of the wind deflector is not effected by moving pivoting point 8 in longitudinal direction, but in this case pivoting point 8 will remain stationary, and the limiting element for limiting the maximum angular movement of arm 7 of wind deflector 6 is adjusted. Said limiting element includes a movable slide 17 comprising a guide slot or camway 18, which mates with a cam 19 on arm 7 of wind deflector 6. Slide 17 is loaded in forward direction by a spring element in the form of a draw spring 20, which attempts to maintain the engagement between slide 17 and a front stop 21. In this front position of camway 18, cam 19 on arm 7 of wind deflector 6 is only limited in upward direction, and cam 19 can freely move downwards so as to allow panel 4 to urge arm 7 downwards in order to move wind deflector 6 to the inoperative position when panel 4 is being closed. The first part of the camway extends parallel to the guide for slide 17, in order to compensate for any play in the drive mechanism without moving wind deflector 6. When slide 17 moves rearwards, cam 19 on arm 7 follows the path of camway 18, and arm 7 is pivoted downwards in dependence thereon, as a result of which wind deflector 6 is adjusted. Slide 17 can be driven in a manner similar to the manner in which mounting element 14 is moved in the embodiment of Fig. 4, that is, via a connecting cable 13, which can be engaged by a driving cable or the like. Spring 20 causes slide 17 to be automatically returned to the front position. From the foregoing it will be apparent that the invention provides an open roof construction which comprises wind deflection means which can be adjusted manually or automatically, depending on the circumstances, so as to obtain an optimum wind deflection effect, so that an optimum comfort can be maintained in the vehicle under varying circumstances. The invention is not limited to the above-described embodiments as shown in the drawings, which can be varied in several ways within the scope of the invention. Thus, wind deflection means may be provided near the rear edge or near the side edge of the roof opening as well. Also wind deflection means disposed in front of roof opening 2 are conceivable, such as a flow channel bounded by an adjustable flap. Furthermore it is possible to provide the wind deflection means with operating means, which can be controlled from driver's position in the vehicle, for example. The driver can determine the position of the wind deflection means himself by means of said operating means, whereby, for example, an optimum noise level is achieved for the driver. The control system may comprise a number of preferred positions, from which the driver can make a selection. Of course it is also possible to provide a continuously variable operation system. Furthermore it may be possible to choose between manual operation and automatic operation of the wind deflector.

Claims: An open roof construction for a vehicle having a roof opening (2) in its fixed roof (1), comprising a closing element (4) for selectively closing or at least partially opening said roof opening by moving the closing element in rearward direction, a drive unit (5), electronic control means, a mechanism for moving said closing element, which is disposed between said drive unit and said closing element, wind deflection means (6) disposed near an edge of the roof opening (2), which functions to deflect the air flow when the vehicle is driving, and driving means (10), which is connected to said wind deflection means (6) via a transmission (11,13), said control means being connected to said driving means, characterized by a sunscreen which is capable of sliding movement under said closing element (4), and which is provided with an associated electric motor (10) for moving the sun screen, wherein said electric motor for the sun screen (9) is used as the driving means (10) for the wind deflection means (6) and wherein the transmission means (11,13) comprises a connecting element (13) connecting the sun screen (9) to the wind deflection means (6) for adjustment thereof. An open roof construction according to claim 1, wherein said connecting element (13) is arranged in such a manner that said wind deflection means (6) is only adjustable near the open position of the sun screen (9). An open roof construction according to claim 2, wherein said connecting element (13) comprises an elongated pull-push element, such as a cable, which is connected to said wind deflection means (6) at one end and which comprises a catch element (15) at its other end, which catch element is disposed in the path of a mating operating element (16) of the sun screen (9), whilst spring means (20) are provided for biasing said wind deflection means (6) to a starting position. An open roof construction according any of the preceding claims, wherein said control means includes operation means for operating the driving means for said wind deflection means. An open roof construction according any of the preceding claims 1 or 4, wherein said control means can be connected to measuring means for measuring condition parameters, and wherein said control means is arranged for adjusting said win deflection means (6) with the aid of said driving means (10) on the basis of said condition parameters. An open roof construction according to claim 5, wherein said measuring means comprises a speedometer, and wherein the condition parameter comprises the speed of the vehicle. An open roof construction according to any one of the preceding claims, wherein said wind deflection means (6) comprises a wind deflector, and wherein the angle of inclination and/or the longitudinal position of said wind deflector (6) is preferably adjustable. An open roof construction according to claim 7, wherein the maximum pivoted position of said wind deflector (6) is determined by a limiting element (17,18) which can be moved by said driving means (10), and which, upon being moved, changes the maximum pivoted position of said wind deflector (6). An open roof construction according to claim 8, wherein said limiting element (17,18) includes a movable slide (17) comprising a camway (18), wit which a cam (19) on said wind deflector (6) mates. An open roof construction according to claim 9, wherein said wind deflector (6) pivots about a pivoting point (8), and wherein the maximum pivoted position of the wind deflector (6) is determined by a limiting element, whilst the driving means (10) is connected to said pivoting point (8) An open roof construction according to any one of the claims 1-10, wherein the driving means for the wind deflection means is connected to the drive unit for the closing element via a controllable coupling or the like.

Inventors: LENKENS PETRUS CHRISTIAAN MART, NABUURS MARTINUS WILHELMUS MAR, LENKENS, PETRUS CHRISTIAAN MARTINUS, NABUURS, MARTINUS WILHELMUS MARIA
Applicants: INALFA ROOF SYS GROUP BV, INALFA ROOF SYSTEMS GROUP B.V.
Application year: 1998
Main classification: B60J7
IPC codes: B60J7