BACKGROUND
The discussion below is merely provided for general background information and is not intended to be used as an aid in determining the scope of the claimed subject matter.
Aspects of the invention relate to an open roof system for a vehicle having an opening in its fixed roof, comprising a stationary part to be fixed to the roof, at least first and second movable elements, which are each movable between a position in which it is retracted, and a position in which it is deployed, a motor for driving the movable elements at least partly between the two positions, and at least two drive cable assemblies for transferring the torque of the motor to said movable elements, whereby the stationary part comprises at least first and second guiding channels and laterally positioned guides for respectively guiding the drive cable assemblies and the movable elements whereby the drive cable assemblies comprise a flexible first part having first and second ends, said first part being driven by the motor, and whereby said first end of said flexible first part is connected to the first movable element, in a first direction, and said second end is guided in a first guiding channel in the lateral guide, said second end oriented in a direction substantially parallel to the first end towards said first movable element.
SUMMARY
This Summary and the Abstract herein are provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary and the Abstract are not intended to identify key features or essential features of the claimed subject matter, nor are they intended to be used as an aid in determining the scope of the claimed subject matter. The claimed subject matter is not limited to implementations that solve any or all disadvantages noted in the Background.
An aspect of the present invention is a open roof system in which the drive cable assembly further comprises an elongated second part, guided in a second guiding channel in a second direction towards said second movable element and connected thereto, and in that the second guiding channel is oriented substantially parallel to the first guiding channel in the lateral guide, and in that, during at least part of the operation, said elongated second part moves substantially in the same direction as the second end of the first part of the cable assembly.
By having an elongated second part connected to the first part of the drive cable assembly at its second end it becomes possible to use the movement of the first part of the drive cable assembly and drive a second movable element in a direction opposite to first movable element, while keeping the elongated second part in the same lateral guide as the second end of the first part of the drive cable assembly. This is favorable in view of the length of the drive cable, not only because of costs and necessary room, but also because of cable resistance, and cable slack, being less.
In one embodiment the elongated second part of the drive cable assembly is separate from the first part of the drive cable assembly. In such embodiment the first and second parts may be connected by a separate connecting part.
In this embodiment the second part may be continuously immovably connected to the flexible first part.
In another embodiment such a separate connection between the first and second parts could be temporary, for instance when the second part is temporarily connected to the flexible first part, by a temporary connecting part. This is necessary when the first and second movable elements do not require the same amount of cable movement for their respective function, so that during a movement between two positions of the first or the second movable element, the second elongated part is disconnected from the flexible first part, such that the second movable element, which requires the least of the cable travel, stops moving.
In another embodiment the elongated second part of the drive cable assembly is an extension of the flexible first part. This is when one and the same drive cable forms the first and the second part of the drive cable assembly. In such situation the elongated second part is delimited from the first part by a bend with a small radius in the drive cable assembly. In practice the boundary area between the first and the second part of the drive cable assembly shall be slightly flattened, due to the bend in the cable. This flattened area is necessary to let it protrude through a lateral opening in the guiding channels through which the first and second part of the drive cable assembly run. In this above described embodiment it is clear that the second part is continuously immovably connected to the flexible first part.
In another embodiment the elongated second part is a flexible part having the same properties as the flexible first part.
However, in yet another embodiment the elongated second part may have different properties compared to the flexible first part for instance the second part may be a substantially stiff part, made of plastic material or metal alloy, or the like.
In one embodiment the first and second guiding channels in the lateral guide have lateral openings extending along the length of the guide whereby the lateral openings are facing each other, and wherein the connecting part projects through said openings. It could be conceived in another embodiment that either one of the first, and second part projects through said openings. In another embodiment it could also be conceived that the temporary connecting part projects through said openings.
In another embodiment the first and second guiding channel in the lateral guide have lateral openings extending along the length of the guide, whereby the lateral openings are facing away from each other, and wherein the connecting part projects through said openings.
In a preferred embodiment the first and second movable elements are windable sunscreens, and wherein the motor is positioned substantially between the first and the second movable elements.
It is also conceivable that the first and second movable elements are stackable sunscreens, or a closure assembly for closing of the opening in the fixed roof of the panel.
In another embodiment, the first and second movable elements are the closure assembly and a slide. For instance a slide for raising a wind deflector assembly for deflecting the wind when the closure assembly is in the open position.
In yet another embodiment the elongated second part is part of a mechanism for the movement of the first or second movable element.
In either of the embodiments described above the first part of the drive cable assembly runs from one lateral guide to the opposite lateral guide, via the first guiding channel.
BRIEF DESCRIPTION OF THE DRAWINGS
Aspects of the invention will hereafter be elucidated with reference to the drawings showing embodiments of the invention by way of example.
FIG. 1 is a schematic perspective view of a passenger car which is provided with an embodiment of the open roof system.
FIG. 2 is an enlarged schematic perspective view of the open roof system used in the car of FIG. 1.
FIG. 3 is a schematic perspective exploded view of the open roof system of FIG. 2.
FIG. 4 is a plan view of the open roof system according to FIG. 3, whereby the closure assembly of the open roof system is not shown for clarity reasons.
FIG. 5
b is a schematic perspective view through the connecting part in one embodiment, which is part of the drive cable assembly.
FIG. 5
a is a cross section taken along line V-V in FIG. 5b through the connecting part, and showing guiding channels with lateral openings facing each other.
FIG. 6
a is a cross section taken along line VI-VI in FIG. 6b through the connecting part, and showing guiding channels with lateral openings facing each other.
FIG. 6
b is a schematic perspective view showing the drive cable assembly, whereby the first and the second part of the assembly is a continuous cable having an acute angle.
FIG. 7
a is a cross section taken in FIG. 5B along line VII-VII through the connecting part.
FIG. 7
b is a schematic perspective view, showing the connecting part in an embodiment, in which it is built up of two mirror image pieces.
FIG. 8 is an enlarged schematic perspective view of the temporary connecting part, shown in a disconnected position.
FIG. 9 is a schematic perspective view, starting from a perspective cross section at the front of the drawing, showing two guiding channels, having lateral openings facing away from each other.
FIG. 10 is a schematic perspective view showing guiding channels having joined lateral openings facing a downward direction.
FIG. 11 is a schematic plan view of the open roof system showing, front and rear glass panels, of which only the rear panel is drawn as being transparent, in order to show the windable or rollo screen, guiding channels and drive cable assemblies, lying below the transparent rear panel.
FIG. 12 is a schematic plan view of the open roof system, showing the front and rear glass panels in a centrally stacked position.
FIG. 13 is a schematic plan view of the open roof system, showing the front and rear sunshade panels in a centrally stacked position.
FIG. 14 is a schematic plan view of the open roof system showing the front and rear closure panels, and the front and rear windable screens. The front panel is drawn in a tilted position and the rear windable screen is drawn in a partly open position.
FIG. 15 is a schematic plan view of the open roof system showing the front and rear glass panels, and the wind deflector device having slides. The front panel is drawn in a slightly open position, whereas the drive cable assemblies are drawn in a disconnected position from the wind deflector slide.
DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS
Referring to FIG. 1, a vehicle having an open roof system in its fixed roof 2 is illustrated schematically. Said open roof system comprises a roof opening 1 in a fixed roof 2 of the vehicle, such as a passenger car, and at least first and second closure elements 4, 5 for example glass or plastic, at least partly transparent panels as shown in FIG. 1. The first and second closure elements can be moved for closing and at least partially opening said roof opening 1 by means explained below.
Below the roof opening 1, not shown in FIG. 1, but elucidated hereafter, at least first and second movable elements 41, 51, 42, 52, 24 are arranged, here in the form of windable (flexible) sunscreens or rollo's, stackable (rigid) sunscreens or slides for a wind deflector, which are each movable between a position in which it is retracted, and a position in which it is deployed. Other first and second movable elements are conceivable.
Referring to FIG. 2, an open roof system is schematically illustrated, comprising the first and second movable elements 4, 5, here a closure assembly, connected via a moving mechanism (not shown here), which is known per se, to a stationary part 3, particularly a frame, and further comprising a motor 6 and partly shown first guiding channels 9, 9′, 10, 10′. The stationary part 3 comprises front and rear members and a center member 12, which are known per se, and not further elucidated and are connected to lateral extrusion guides 11, 11′, and said stationary part 3 connects the open roof system with the body of the vehicle by means of the usual fixing concepts such as screwing, gluing or a combination of these fixing concepts. The motor 6 may be an electric motor with a gearwheel that transfers the motor torque to the movable elements 4, 5, 24, 41, 51, 42, 52, via the drive cable assemblies 7, 8, in a way known per se. In FIG. 2 the motor 6 is positioned on the center member 12, but it is conceivable that the motor 6 is positioned on the front or rear member of stationary part 3.
Referring to FIG. 3, an open roof system is illustrated schematically and partly in exploded view, such that the stationary part 3 and the first and second movable elements 41, 51, here windable sunscreens, are shown. The first and second movable elements 41, 51 are drawn in a partly deployed position. Each of these windable sunscreens comprise a flexible screen, said screen being connected on one longitudinal end to a winding shaft, and on its opposite longitudinal end to a movable control beam. Said screen can be wound up onto, or unwound from the rotatable winding shaft in order to respectively deploy or retract the sunscreen. The winding shafts of each of said movable elements 41, 51 are fixed to the stationary part 3, and are positioned, seen in a longitudinal direction, adjacent to the motor 6. Said motor 6 is positioned on the center member 12 of stationary part 3, such that each of the movable elements 41, 51 can be deployed and or retracted in an opposite longitudinal direction.
The stationary part 3 comprises lateral extrusion guides 11, 11′. Said lateral guides 11, 11′ comprise supporting channels for guiding the first and second movable elements 4, 5, 41, 51, 42, 52, 24, but said guides comprise also first and second guiding channels 9, 9′, 10, 10′, 17, 17′ for guiding the drive cable assemblies 7, 8, and movable elements 4, 5, 24, 41, 51, 42, 52, said first and second guiding channels are oriented substantially parallel to each other.
FIG. 4 shows only part of the open roof system, namely the stationary part 3, the first and second moveable members 41, 51, drawn in a partly deployed position, the motor 6, first and second guiding channels 9, 9′, 10, 10′, 17, 18, and schematically, shown by hatching in the drawing, part of the drive cable assemblies 7, 8, running in guiding channels 9, 9′, 10, 10′, 17, 17′. The first guiding channels 9, 9′, 10, 10′ guide the drive cable assemblies 7, 8 to and from the motor 6, said channels can be conceived as being steel pipes or channels incorporated in either of the front, center or rear members in a manner known per se, running from the motor to a connecting joint with the first channel, in the lateral guide 11, 11′.
Drive cable assembly 7, 8 comprises flexible first parts 13, 14, having first ends 13′, 14′, and second ends 13″, 14″, and further second parts 15, 16 and a connecting part 19.
Each of the first parts 13, 14 of the drive cable assemblies is guided in the first guiding channels 9, 9′. Said first parts 13, 14 run from the position at which the gearwheel of the motor 6 is in driving engagement with the first part of the drive cable assembly 7, 8 in one direction through the first guiding channels 9, 9′. Via a connection joint they run from the first channels 9, 9′ into the respective lateral guide, and along a lateral guiding channel, up to where the first parts 13, 14 are connected with their first ends 13′, 14′ to the connecting part 19 of the first or second movable element 41, 51.
Each of the first parts 13, 14 runs in opposite direction from the first end 13′, 14′, from the position at which the gearwheel of the motor 6 is in engagement with the drive cable assembly, through the first guiding channels 10, 10′. Via a connection joint they run from the channels 10, 10′ into the respective lateral guide, and along a lateral guiding channel, up to where the first parts 13, 14 are connected with their second ends 13″, 14″ to the connecting part 19.
The second parts 15, 16 of drive cable assembly 7, 8 are connected to the first parts 13, 14 by means of the connecting part 19, and said second parts 15, 16 run in second guiding channels 17, 17′ in lateral guides 11, 11′ from said connecting part 19 to a connecting part of the first or second movable element at an opposite end. Second parts 15, 16 may be a substantially stiff part, for example made of plastic material or a metal alloy.
When in FIG. 4 the motor 6 runs in clockwise direction, first and second movable elements 41, 51 will be retracted, that is the windable sunscreen cloth will be wound up onto the respective winding shafts. This can be explained as follows. First parts 13, 14 of drive cable assemblies 7, 8, which are connected with their first ends 13′, 14′ to the movable control beam of the second moveable element 51, are driven by the clockwise turning motor in a direction such that the movable beam slides towards the winding shaft of movable element 51, and thus retracting the movable element 51.
Because second ends 13″, 14″ are positioned at the opposite end of first parts 13, 14, and also at the opposite side of motor 6, this end will move in longitudinal opposite, but substantial parallel direction compared to its first end 13′, 14′, and towards the first movable element 4, 24, 41, 42.
Second parts 15, 16 of drive cable assembly 7, 8 are connected to the second ends 13″, 14″ of first parts 13, 14, so that second parts move in the same direction as said second ends 13″, 14″, and said second parts 15, 16 are guided in a second guiding channel 17, 18 in a second direction towards the second movable element 5, 51, 52, and connected thereto. Thus, said second parts will move in a longitudinal direction opposite to the first parts when motor 6 runs in a clockwise direction. The movable beam slides towards the winding shaft of movable element 41, and thus retracting the movable element 41. So by connecting the first parts 13, 14 to the second parts 15, 16 drive cable assemblies 7, 8 are created with which the two movable elements 41, 51 are driven in opposite direction by means of one motor.
Referring to FIGS. 5a and 5b, the elongated second part 15, 16 of the drive cable assembly 7, 8 is separate from the first part 13, 14, and the connecting part 19 of drive cable assemblies 7, 8 is illustrated in a schematic way, as a separate part. First and second guiding channels 9, 9′, 10, 10′ have lateral openings 20, 20′, along the length of the guide which openings allow the connection part 19 to protrude from the first into the second guiding channel. Second ends 13″, 14″ of first parts 13, 14 of drive cable assemblies 7, 8 are firmly and immovably connected to second parts 15, 16 by means of this connecting part 19. Said connecting part 19 could for instance be made of a plastic molded part, or a metallic molded or casted part. The shape of the connecting part 19 is such that it has a narrow portion 22 in between the drive cable first and second parts 13″, 14″, 15, 16. This narrow portion 22 is necessary, to make the lateral openings 20, 20′ small enough, so that when a driving force is applied to said drive cable assemblies 7, 8, the drive cables do not escape from their respective channels through the respective lateral openings 20, 20′, at an area away from the connecting part 19. In this embodiment the lateral openings 20, 20′ in the first and second guiding channels are facing each other. The length of the openings 20 is such that they allow movement of the connecting part 19 over a distance sufficient to allow movement of the movable elements 41, 51 between their retracted and deployed positions.
Referring to FIGS. 6a and 6b, another embodiment of the drive cable assemblies is schematically shown. In this embodiment the drive cable assemblies may also be made of just one cable, whereby the elongated second part is an extension of the flexible first part. Instead of a separate connecting part 19, connecting two separate drive cables, the first and second drive cable parts 13, 14, 15, 16 could be made of one piece of cable having a bend 26 with a small radius (here through 180 degrees) at the position where the cable is routed from the first guiding channel 9, 10, to the second guiding channel 17, 18. At this particular bend 26, the transition of the cable thickness must have a similar narrow portion 22, which protrudes through lateral openings 20, 20′, such that the drive cable cannot escape through lateral openings 20, 20′ in the first and second guiding channels 9, 9′, 10, 10′, 17, 18, and said channels can give enough support for guiding the cable assemblies 7, 8 as explained above. In this embodiment the elongated second part 15, 16 may be a flexible part having the same properties as the flexible first part. The lateral openings 20, 20′ are facing each other.
FIGS. 7
a and 7b refer to yet another embodiment of connecting first and second parts 13, 14, 15, 16 of the drive cable assemblies 7, 8. Here the connecting part 19 is split up in two parts, each of which are connected with a separate element, which could be a screw or equivalent. Such embodiment could be used in a situation where the complete drive cable assembly is difficult to assemble into first and second guiding channels. In this embodiment the first and second part of the cable can be assembled in sequence, and afterwards these two parts can be connected to each other by means of the separate fixing element 31.
FIG. 8 is referring to another special embodiment of the connecting part 19. As explained before, the first and second movable elements are driven by one motor 6. It is clear that when the length of movement of the drive cable assembly that drives the first movable element 4, 41, 42, 24 from a first extreme position to another extreme position is not the same as the length of movement required for the second movable element 5, 51, 52, it is not possible to finalize the movement of one of the movable elements, when the movement of the other element is completed. To overcome this problem, a temporary connecting part 27 is proposed. Said part comprises a first part 27′ fixed to the second end 13″, 14″ having a protruding counterpart which can make a temporary connection with a second part 27″, and the second part 27″ which is connected to the second part 15, 16 of the drive cable assembly 7, 8 further comprising a receiving part for receiving the protruding counterpart temporarily. The second part 27″ can be coupled and decoupled from the first part 27′. When the first 27′ and second part 27″ are coupled , the temporary connecting part 27 can transfer the driving forces supplied by the motor 6. The coupling between first and second part is a clamping coupling. The first part 27′ and second part 27″ are decoupled by allowing the second part 27″ to be stopped from moving by a protruding part 32 adopted in the second guiding channel 17, 17′ and thus that second movable element 5, 51, 52 stops moving. Protruding part 32 not only stops second part 27″, but also locks it, at the same place, relative to the second guiding channel 17, 17′. Once first and second part 27′,27″ are decoupled, it is necessary to lock second part 27″ in place, in order to couple said first and second part again. The first part 27′ of the temporary connecting part 27 will be moved further under influence of the motor force, and will be decoupled from the second part 27″ of the temporary connecting part 27. First part 27′ is capable of transferring push and pull forces, this is possible due to the fact that the coupling and decoupling force between first part 27′and second part 27″ is higher than the normal force required for moving either of the moving elements 4, 5, 24, 41, 42, 51, 52. The coupling and decoupling force, to couple and decouple the first and second part from each other, lies within the maximum force the motor 6 can exert. For connecting the first and second part of the temporary connecting part 27 the procedure is done in a reverse manner. It will be clear that with this temporary connecting part 27 as part of the drive cable assemblies 7, 8 it will be possible to drive both movable elements 4, 5, 41, 51, 42, 52 from one extreme position to another extreme position, still using one motor
FIGS. 9 and 10 refer to alternative embodiments of lateral openings 20, 20′ in the first and second guiding channel 9, 9′, 10, 10′, 17, 17′. In FIG. 9 it is shown that the lateral openings 20, 20′ in first and second guiding channels 9, 9′, 10, 10′, 17, 17′ are facing away from each other, such that the connecting part 19, forms a bridge shape, connecting the first and second part 13, 14, 15, 16 of the drive cable assembly. Also it can be conceived that in FIG. 10 the lateral openings 20, 20′ in the first and second guiding channel 9, 9′, 10, 10′, 17, 17′ is a joint opening facing in another direction, for instance in a downward direction or upward direction.
In the embodiment of FIGS. 11 and 14 the first movable element 4 is a closure means, and the second movable element 51 is a windable sunscreen. In FIG. 11, the closure means 4 is driven by a moving mechanism 25, 25′ which, when the closure means moves to another position, slides in guiding channels in the guide 11, 11′. Such a closure means and mechanism are known per se. In FIG. 11 the mechanism 25, 25′ is connected to the second part 15, 16 of the drive cable assembly 7, 8. The advantage of such connection is that the attachment point of the mechanism 25, 25′ to the second part 15, 16, may slide, seen in a longitudinal direction, close to the rear of the opening, or even rear of the opening of the closure means 4, such that closure means 4 may slide more to the rear, which results in a larger opening.
In FIG. 12 an open roof system is drawn in a schematic way, whereby the first and second movable elements 4, 5 is a closure assembly. The closure assembly close the roof opening in the first, deployed position, and may slide towards each other, and may be stacked on top of each other, in a central area of the open roof system in a retracted position, as is shown in FIG. 12.
In FIG. 13 an open roof system is shown, whereby the first and second movable elements 42, 52 are stackable sunshades. The stackable sunshades close the opening beneath the roof opening and the closure assembly in a first, deployed position, and may slide towards each other and be stacked or be adjacent towards each other in a central area of the open roof system, in a retracted position, shown in FIG. 13.
Further in FIG. 15 an open roof system is drawn in a schematic way, whereby the first movable element 4 is a closure element, and the second movable element is a slide 24, 24′ that moves a wind deflector means 28. In this embodiment the first and second movable elements 4, 24, 24′ are connected both to the second part 15, 16 of the drive cable assembly 7, 8. Such a wind deflector 28 is known per se, it comprises a wind deflector body pivotally attacked to the lateral guides 11, 12, and being capable of pivoting around a pivot point from a position, in which it is retracted below the closure element, to an position in which it is deployed above the roof opening. The wind defector body further comprises a laterally protruding pin, for the engagement with the wind deflector slide 24, 24′. The wind deflector 28 further comprises said slide 24, 24′, which is slidably guided in the lateral guides 11, 12. Said slide comprises a track for engagement with the pin on the wind deflector body. Moving the slide 24, 24′ backwards in the guiding channel by moving second part 15, 16 of drive cable assembly 7, 8, the wind deflector body moves from a retracted position to a deployed position, as drawn in FIG. 15. The element 4 is connected to a moving mechanism 25, 25′ and known per se, as described before. Furthermore to allow the second part 15, 16 of the drive cable assembly 7, 8 to adjust the second movable part 24 and the first movable part 4 at the same time, a temporary connecting part 27 is provided. It temporarily connects the second part 15, 16 of drive cable assembly 7, 8 to the wind deflector slide 24, 24′. It will be decoupled from said wind deflector slide 24, 24′ when the wind deflector body is in its deployed position. This is necessary because the length of the cable travel to raise the wind deflector body in a deployed position, is shorter than the length of the cable travel necessary to open the closure means.
From the foregoing it will be clear that the invention provides an open roof system which has a solution for driving at least two movable elements which is cost effective and technically favorable.
The invention is not limited to the embodiments shown in the drawing and described herein before, which may be varied in different manners within the scope of the invention. Aspects of different embodiments may be used in other combinations.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above as has been held by the courts. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Patent Application
20130328355
