WO2006037602A1

WO2006037602A1 - Draught deflector

Info

Publication number: WO2006037602A1
Application number: PCT/EP2005/010667
Authority: WO
Inventors: Kurt Kugler
Original assignee: Webasto Ag
Priority date: 2004-10-01
Filing date: 2005-10-04
Publication date: 2006-04-13
Also published as: EP1794015A1; DE102004048375B4; DE102004048375A1

Abstract

The invention relates to a draught deflector (6) for a retractable vehicle roof comprising an air deflector profile (7) that can be displaced between a lowered resting position and a raised operating position by means of lateral deployment arms (8), about a pivoting axis (9) on the roof side that lies at a distance from the air deflector profile. To reduce the vibration of the air deflector profile (7), the latter (7) is supported on the vehicle roof (2) between the two deployment arms (8) by means of at least one supporting device (18). Said supporting device (18) comprises in particular a supporting arm (23), one side of which is supported on the air deflector profile (7) and the other side of which is displaceably mounted in a bearing housing that is fixed to the roof.

Description

wind deflector

The invention relates to a wind deflector for an openable vehicle roof with an air guide profile which is mounted adjustable by means of lateral extension arms about a roof-side pivot axis remote from the air guide profile between a lowered rest position and a raised functional position.

From DE 101 37 789 A1, a wind deflector has become known whose air guide profile is pivotally mounted on both sides in each case by means of a pivot bearing at the front end of a telescopic arm telescopically mounted on a telescopic arm and by means of a spring arranged on the pivot bearing with its front edge opposite the telescopic arm biased downwards. In the lowered rest position of the wind deflector, the sliding roof cover pushes the Aus¬ adjusting lever against the force of a Ausstellfeder down, the resting with its front edge in a receiving space under the cowl air guide is pivoted relative to the telescope extended to the front in a flat position. When the sunroof lid is opened, it slides back on the deployment lever and allows it to pivot upwards due to the deployment spring until the deployment lever engages from below on a frame side part of the vehicle roof, whereby the maximum opening height of the deployment lever is indicated. The telescopic arm is retracted by spring force and the front edge of the inclined Luftleitprofils applies to a seal on the cowl, so that the air flow is performed exclusively on the Luftleitprofil. If the air guide profile is formed narrow, unwanted oscillations may occur during driving due to a lack of rigidity in its middle section between the lateral Ausstellhe¬. From DE 203 13 783 U1 a sliding roof device of a motor vehicle with a wind deflector has become known, which is pivotally supported by means of a support arm on the vehicle roof. Between the support arm and the vehicle roof a telescopic spring and damping element is arranged, which biases the wind deflector into its operating position. At higher driving speeds, the air flow presses the wind deflector downwards against the force of the spring and damping element in a lower position. The Fe¬ der- and damping element is designed such that the wind deflector is adapted in height to the vehicle roof dynamically to the driving speed. v

The object of the invention is to provide a wind deflector mentioned at the outset, which in its raised functional position is protected against undesired vibration behavior.

This object is achieved in the above-mentioned wind deflector according to the invention that the air guide between the two Ausstellarmen is supported by at least one support means on the vehicle roof. The Abstütz¬ device supports the Luftleitprofil in its otherwise unsupported Be¬ rich between the two Ausstellarmen, this area on uneven roads and / or turbulent air flow to vibrate wer¬ could, especially if the air guide in lightweight and with low rigidity is made.

Advantageous embodiments of the invention are given in the subclaims.

The support device preferably contains a support arm, which is supported on the one hand on the air guide profile and on the other hand is mounted displaceably on a roof-fixed bearing or bearing housing. The movable support arm allows the height adjustment of the air guide between the rest position and the func onsstellung. Preferably, the support arm extends in or along the direction of movement of the Luftleitprofils. Thus, the support arm can be formed comparatively short.

Advantageously, the support arm is biased by a spring device in its Hub¬ position in which the Luftleitprofil is angeho¬ ben in its operating position. Due to the preload of the support arm is always biased backlash, but can make compensatory movements. The spring device may be a compression spring or a leg spring or else a different type of elastic element.

In particular, in a preferred embodiment, the support arm is biased in its Hubstel¬ ment against a stop buffer. The stop buffer is attached to the bearing housing and may consist of one or more parts, for. B. of an elastomeric plastic.

In order to guide the support arm on the bearing housing or other roof-side bearing, it can be provided that the support arm has at its lower end at least one pin which is slidably received in a pin guide of the housing or dachseiti¬ gene bearing. Instead of a pin and a different kind of projection or another guide member of the support arm may be performed on the guide.

If a damping element between the support arm and the pin guide is arranged, a movement of the support arm along the pin guide can be damped and the support arm or the support means can also act in ei¬ ner intermediate position of the Luftleitprofils damping.

If the support arm is pivotally mounted on the air guide in the vehicle longitudinal direction, in particular by a small angle of about +/- 2 °, manufacturing tolerances can be compensated and it is prevented that the support arm could tense. Conveniently, the support arm is attached to the Luftleit¬ profile on a bolt bearing and held by a detent. The bearing housing may have a right and a left bearing shell, which can be fixed in each case by means of a screw connection on the vehicle roof or a roof frame surrounding the roof opening. Due to the division of the bearing housing and the simple assembly, a defective support device can be easily repaired.

Conveniently, a spring device mounted on the extension arm biases the air guide into its resting on the stop surface of the extension arm pivot position, the Luftleitprofil can be pivoted on the one hand easily in its inclined Luftleitstellung when the Windab¬ sage is raised to the functional position, and on the other hand in the ab¬ lowered resting position relative to the extension arm in a flat position ver¬ provides, in which it requires only a small amount in the storage position or in Abla¬ space.

Preferably, a spring strut adjusting the wind deflector is hinged on the one hand to the wind deflector, in particular to the extension arm in the region of a joint supporting the air guide profile, and on the other hand to the vehicle roof. The spring strut can z. B. a strut with at least one tension or compression spring and may also have a damping device.

The spring device may have a first range of movement of low spring force and a second range of movement of higher spring force, which are assigned to a first adjustment range of the wind deflector from its issued Funktionsstel¬ ment or a second adjustment of the wind deflector in its lowered rest position. In the first adjustment of the wind deflector is between his fully flared or raised functional position in which he or his Luftleitprofil z. B. is located well above the roof opening lying in front of a roof opening and in particular flows over and under, and a lowered intermediate position adjustable, in which he or the air guide z. B. is located just above the level of the roof skin and thus generates less wind noise at the roof opening, especially at high speeds due to the lower exhibition height. In this first adjustment range is the spring force of the spring device is lower than in the second adjustment range, so that consequently only a smaller force is required for lowering the wind deflector. The force for lowering the wind deflector can z. B. be provided by a drive or actuating device, in particular depending on the driving speed. Expediently, the spring device has a spring characteristic which is classified between the first range of movement of low spring force and the second range of movement of higher spring force. The step forms a defined transition at which the spring behavior of the spring device changes significantly. The step prevents a höhe¬ re Fahrtwind force the wind deflector from its lowered intermediate position can continue to shift down.

According to a preferred embodiment of the invention, the spring device has a first spring and a second spring, wherein the spring force of the first Fe¬ is greater than that of the second spring. The two springs are arranged in such an an¬ order that when lowering the wind deflector first yields the lower spring force having second spring, while the first spring remains rigid. Then also gives the higher spring force having the first spring. The first spring as well as the second spring may be formed by individual springs or spring packs.

A particularly simple design of the wind deflector is obtained when it is held only by the extended to maximum length spring strut in its raised functional position. For the arrangement of the Windabwei¬ sers then no further components are required. In particular, the air guide profile in its raised functional position is both overflowed and underflowed by an air flow.

Preferably, a sliding lid of the openable vehicle roof has an actuating device for lowering the opening arms, wherein the actuating device expediently contains a front slider and a rear slider, which successively lower the extension arm into its rest position when the lid is closed. In a preferred design holds When the lid is closed, the rear glides the air guide in its abge¬ lowered rest position, while the front slider z. B. is arranged in front of a roof-tight cover seal.

When the wind deflector is lowered in the rest position, the air guide profile preferably rests on a roof-side support and is pivoted back into a flat orientation relative to the extension arm.

An exemplary embodiment of the wind deflector will be explained below with reference to the drawing. It shows:

1 is a perspective plan view of a passenger vehicle having a vehicle roof and a roof opening, a wind deflector and a cover of a sliding roof for closing the roof opening;

FIG. 2 shows a side view of the wind deflector in the raised functional position; FIG.

FIG. 3 shows a side view according to FIG. 2 of the wind deflector in the lowered rest position; FIG.

4 is a perspective plan view of a middle section of an air guide profile of the raised wind deflector and a support device for the air guide profile;

5 shows a perspective plan view according to FIG. 4 of the middle section of the lifted air guide profile and a left bearing shell of a housing of the support device;

6 is a perspective plan view of the left bearing shell of the housing of the support device with a support spring. 7 shows a perspective plan view of the left bearing shell of the housing of the support device with a support lever in a lowered position of the air guide profile corresponding to the lower position; and

Fig. 8 is a perspective plan view of FIG. 4, the central portion of the lowered Luftleitprofils with the left bearing shell of the housing of the support device and the lowered support lever.

A vehicle 1 (see FIG. 1) contains a vehicle roof 2 with a roof opening 3 and a cover 4 of a sliding roof, which can be adjusted in known manner between a closed position closing the roof opening 3 and an open position releasing the roof opening 3. A wind deflector 6 assigned to the front edge 5 of the roof opening 3 contains a wind deflector lamella or air guide profile 7 which is arranged on both sides by means of a respective extension arm 8 of a bearing device of the wind deflector 6 extending rearwardly from the air guide profile 7 around a rear end of the stay arm 8 Schwenk¬ axis 9 of a vehicle roof arranged pivot bearing between a lowered rest position (Fig. 2) and a raised functional position (Fig. 3) is pivotally mounted.

The air guide 7 is mounted at the front end of each of the two side Ausstellarme 8 by means of a joint formed with a bolt 10 about a pivot axis 11 pivotally. A arranged between the air guide 7 and the extension arm 8 leaf spring (not shown) biases the Luftleitprofil 7 downwards in relation to the extension arm 8 obliquely placed functional position before (see Figure 2), in which a support surface 12 of the Luftleitprofils 7 on a stop surface 13 on Front end of the extension arm 8 rests.

An adjusting device for adjusting the wind deflector 6 or the Luftleit¬ profile 7 between its rest position and its functional position is z. B. in the form of a strut or a spring strut 14 (FIGS. 2 and 3) formed on the ei¬ nerseits on the stay 8 z. B. on the bolt of the joint 10 and on the other on the roof opening 3 surrounding frame 15 is pivotally mounted about the pivot axis 16.

The prestressed spring strut 14 pushes the wind deflector 6 open when De¬ 4 in its raised functional position (Fig. 2) and is compressed when the cover 4 of the sunroof moved be¬ forward in its closed position and thereby the wind deflector 6 in his lowered rest position is lowered under the lid 4 (see Fig. 3, the lid 4 is not shown) in which the air guide 7 laterally rests on a respective angeordne¬ th the roof frame 15 th edition 17 and thereby opposite the front end of the stay 8 in a flat space-saving position is pivoted back. The lowering of the wind deflector 6 takes place, for example, via an actuating device attached to the underside of the cover 4, which has one or more slides for sliding engagement on the upper side of each extension arm 8.

A supporting device 18 for roof-side support of the Luftleitprofils 7 (sie¬ see Fig. 4) is provided for example centrally between the lateral Ausstellarmen 8 of the Luftleitprofils 7 and contains a formed by a right bearing shell 19 and a left bearing shell 20 bearing housing, on which the Dachöff 3 surrounding roof frame 15 is fastened by means of two screws 21 and 22 and on which a support arm 23 of the support device 18 is mounted and accommodated vertically and extendable. The support arm 23 contains at its upper end a bearing opening 24 (FIG. 7) of a latching bearing and is attached to the bearing opening 24 on a retaining tongue (not shown) formed on the underside of the air guide profile 7 of a holder 25 by attachment. The support arm 23 can not solve tezapfen of the Hal¬ by means of this locking bearing in operation, however, to compensate for manufacturing tolerances by an angle of about +/- 2 ° to the retaining pin in the vehicle longitudinal direction (arrow x in Fig. 4) pivotable.

At its lower end, the support arm 23 contains two pins 26 protruding in opposite directions in the transverse direction of the vehicle roof along the air guide profile 7 (FIG. 5). The left pin (not shown) is in an added Pin guide 27 which is formed on the inside of the left bearing shell 20 channel- or groove-shaped (see FIGS. 5 and 6) slidably received, while the right pin 26 in an associated pin guide, which on the inside of the right bearing shell 21st is channel-shaped or groove-shaped (see FIGS. 5 and 6), is slidably received. The two identical Zap¬ fenführungen 27 have an upper portion 28 in which the Zapfenfüh¬ tion 27 initially approximately linearly vertically downwards, wherein it corresponds to a Kreis¬ arc section or is approximated, the center of which with the pivot axis 9 of the stay 8 coincides. A subsequent lower section 29 of each pin guide 27 is curved toward the front of the vehicle, so that the support arm 23 is also guided in its forward pivotal movement, while the Luftleitprofil 7 lowers to its rest position and thereby pivoted relative to the Ausstellarm 8 (movement the Luftleitprofils 7 from the position of Fig. 2 in the position of Fig. 3).

Each bearing shell 20, 21 contains at the upper end of the pin guide 27 an An¬ impact buffer 30 (in Fig. 5, the stop buffer 30 of the right bearing shell 21, not shown), against which the respective pin 26 of the support arm 23 in the raised position of the wind deflector. 6 is pressed by a tension spring 31 ge, the z. B. is formed in the form of a leg spring and is arranged on a bearing pin 32 of the two bearing shells 20 or 21. The one leg 33 of the tension spring 31 is supported on the bearing shell 20 and the other leg 34 presses from below against the lower end 35 of the support arm 23 carrying the pins 26 between its two pins 26.

When lowering the wind deflector 6 in its rest position, the Luft¬ guide profile 7 displaces the support arm 23 downwardly into the housing 20, 21, wherein the two pins 26 slide down in the pin guides 27 and the support arm 23 biases the tension spring 31 stronger.

When extending the wind deflector 6, the air guide 7 and thus also the support arm 23 is raised, which is still biased by the force of the tension spring 31 upwards in its stroke position. In the extended functional position of the wind deflector 6, the support arm 23 is moved by the air guide 7 in its upper position in which the two pins 26 are pressed by the tension spring 31 up against the stop buffer 30. If the air guide 7 is formed as a long slim profile and gege¬ possibly has only a low stiffness, the support means may attenuate a possibly occurring during driving vibration of the central part of Luft¬ guide profile 7 or completely prevent.

Between each pin 26 and the associated pin guide 27, a damping element such. B. a rubber elastic O-ring (not shown) vor¬ be seen, which provides a frictional force between the pin 26 and the zugeord¬ Neten pin guide 27 and thus a damping force in the entire adjustment of the wind deflector 6 on the support arm 23 may be effective.

When driving around the flared wind deflector 6 and the air guide 7 flows around a dependent on the driving speed air flow. From a bestimm¬ th higher driving speed, z. B. 140 km / h, the impact on the Luftleitprofil 7 air flow exerts a driving wind, the size of which is sufficient to lower the Luftleitprofil 7 against the force of the spring strut 14. A z. B. has two compression springs spring means of the spring strut 14 has a derar¬ term spring force and a spring characteristic that is compressed by acting on the spring strut 14 Fahrtwindkraft first, the second compression spring which has a relation to the first compression spring lower spring force, while the first compression spring is not compressed. The wind deflector 6 is partially lowered into an intermediate position, whereby the spring strut 14 springs in softly due to the flatter spring characteristic of the second compression spring. The wind deflector 6 lowered into the intermediate position conducts the air flow with reduced air resistance at higher driving speeds.

The first compression spring has such a larger spring force with a steeper spring characteristic than the second compression spring, that even with higher airstream force at a correspondingly higher driving speed (eg about 220 km / h) no further Re compression of the first compression spring and thus no further shortening of the spring strut 14 takes place.

In the exemplary embodiment, a central, central support device 18 is provided, but two or more of these support devices may be distributed over the length of the air guide profile 7.

The support device 18 is basically suitable for wind deflectors, which are not articulated directly pivotable about a hinge joint or the like on the vehicle roof and thus supported torsionally stiff.

The air guide profile 7 can also be firmly connected to the two lateral extension arms 8. The two pin guides 27 then have a substantially straight-line or slightly curved course, which is adapted to the pivoting movement of the opening arms 8.

Vl

LIST OF REFERENCE NUMBERS

Vehicle 19 right bearing shell

Vehicle roof 20 left bearing shell

Roof opening 21 screw

Cover 22 screw

Front edge 23 support arm

Wind deflector 24 bearing opening

Air guide 25 bracket

Extension arm 26 tenons

Pivot axis 27 pin guide

Joint 28 upper section

Pivot axis 29 lower section

Support surface 30 stop buffer

Stop surface 31 tension spring

Spring strut 32 bearing pin

Roof frame 33 legs

Swivel axis 34 legs

Edition 35 lower end

support means

Claims

claims

1. Wind deflector for an openable vehicle roof with a Luftleitpro¬ fil, which is mounted by means of lateral Ausstellarme to a remote from the Luftleitprofil roof-side pivot axis between a lowered rest position and a raised functional position, characterized in that the Luftleitprofil (7) between the two Ausstellarmen ( 8) by means of at least one support means (18) on the vehicle roof (2) is supported.

2. Wind deflector according to claim 1, characterized in that the supporting device (18) has a support arm (23), on the one hand on Luftleitprofil (7) is supported and on the other hand slidably mounted on a roof-fixed bearing or bearing housing (20, 21) ,

3. Wind deflector according to claim 2, characterized in that extending the support arm substantially in the direction of movement of the Luftleitprofils (7).

4. Wind deflector according to claim 2 or 3, characterized in that the support arm (23) by a Federeinrich¬ device (31) is biased in its stroke position, in which the Luftleitprofil (7) is raised to its functional position.

5. Wind deflector according to one of claims 2 to 4, characterized in that the support arm (23) in its stroke position ge conditions a stop buffer (30) is biased.

6. Wind deflector according to one of claims 2 to 5, characterized in that the support arm (23) at its lower end (35) has at least one pin (26) in a pin guide (27) of the housing (20, 21) slidably received is.

7. Wind deflector according to one of claims 2 to 6, characterized in that a damping element between the support arm (23) and the pin guide (27) is arranged and a movement movement of the support arm (23) along the pin guide (27) dampens.

8. Wind deflector according to one of claims 2 to 7, characterized in that the support arm (23) on the air guide (7) is pivotally mounted in the vehicle longitudinal direction.

9. Wind deflector according to one of claims 2 to 8, characterized in that the bearing housing has a right and a lin¬ ke bearing shell (20 or 21).

10. Wind deflector according to claim 9, characterized in that on the inside of each bearing shell (20, 21), the pin guide (27) is formed.

11. Wind deflector according to one of claims 6 to 10, characterized in that the pin guide (27) has a wesentli chen linear upper portion (28) and a curved lower Ab¬ section (29).

12. Wind deflector according to one of claims 1 to 11, characterized in that a Ausstellarm (8) mounted Federein¬ direction biases the Luftleitprofil (7) in its on a support surface (13) of Aus¬ adjusting arm (8) adjacent pivot position.

13. Wind deflector according to one of claims 1 to 12, characterized in that the wind deflector (6) adjusting Fe¬ derstrebe (14) on the one hand on Windabweiser (6), in particular on Ausstell¬ arm (8) in the region of the Luftleitprofil (7 ) bearing joint (10), and on the other hand on the vehicle roof (15) is articulated.

14. Wind deflector according to claim 13, characterized in that the wind deflector (6) is held onsstellung by the extended to maxima¬ le length spring strut (14) in its raised Funkti¬.

15. Wind deflector according to one of claims 1 to 14, characterized in that the Luftleitprofil (7) is both in its raised functional position of an air flow overflowed as well as un¬ terströmt.

16. Wind deflector according to one of claims 13 to 15, characterized in that the spring strut (14) has a two-stage wirk¬ de spring means, so that the wind deflector (6) or the air guide (7) at high flow velocity from the raised functional position lowered into an intermediate position.