DE102010048457B4 - Wind deflector of a vehicle roof - Google Patents

Abstract

Wind deflector (18) of a vehicle roof (10) having a side Ausstellarmen (22) provided or hinged to lateral Ausstellarmen (22) Luftleitprofil (20), by the force (F) of a spring device (30) in an operating position exhibited and against the force (F) of the spring device (30) is lowered into a rest position, characterized in that the spring means comprises at least one U-shaped wire bow spring (30) with two spring legs (32, 34) at one end (40) with each other are connected and whose other ends (36, 38) are mounted on staggered bearings (44, 46, 44 ', 46'), and that the two bearings (44, 46, 44 ', 46') are held fixed relative to each other ,

Description

The invention relates to a wind deflector of a vehicle roof, which has a provided with lateral Ausstellarmen air guide, which can be lowered by the force of a spring device in an operating position and lowered against the force of the spring device in a rest position.

The DE 43 23 694 C2 discloses a wind deflector with lateral Ausstellarmen which are pivotally mounted by means of roof-fixed pivot bearings on the vehicle roof. At each Ausstellarm engages a leaf spring, which is connected in this case with the bottom of the Ausstellarme. The leaf springs cause the exhibiting of the wind deflector and are supported by Gleitansätzen on sliding surfaces of the roof frame.

From the DE 39 06 903 A1 is a generic wind deflector has become known, the Luftleitprofil is pivotally mounted by means of lateral extension arms about an axis fixed to a roof frame axis of rotation. To exhibit the wind deflector two torsion springs are provided, which are received and fixed in the air guide and are supported on a front transverse roof frame.

The DE 102 10 142 A1 shows a wind deflector with an exhibitable Luftleitprofil which is movably mounted on both sides via a respective conventional leg spring. One leg of the leg spring is firmly connected to a mounted on a mounting frame base member, while the other leg is connected to the exhibitable Luftleitprofil and adjusted with this when adjusting the Luftleitprofils relative to the other leg and its attachment to the base member.

The EP 1 595 731 A1 shows a wind deflector, which can be issued by means of a spring element. One leg of the spring element is attached to the extension arm and the other leg performs a sliding movement on the extension arm as well as on a roof frame.

The spring characteristic of conventional springs often leads to the wind deflector is pressed at maximum height from the airstream too low down, since the spring force is no longer sufficient in this position.

The invention has for its object to provide a Windabweiser mentioned above, which has an improved spring means for its deployment movement.

The object is achieved in the aforementioned wind deflector according to the invention that the spring means comprises at least one U-shaped wire bow spring with two spring legs which are interconnected at one end and the other ends are mounted on staggered bearings, and that the two bearings relative held fixed to each other. In such a spring device generates the staggered storage of the in itself in the unstressed state in approximately the same length spring leg for an inner bias, creating a special spring characteristic. In its lower working area, near the pivoted position of the wind deflector, in which the wire bow spring is pressed down from the lid, the wire bow spring has a characteristic similar to a leaf spring. On the other hand, near the maximum deployed position of the wind deflector, the wire bow spring has the characteristic of a wire bow spring with a spring force that is again increased compared to a medium effective range.

Advantageous embodiments of the invention are specified in the dependent claims.

The other ends of the U-shaped wire bow spring can be supported either on the Ausstellarmen or on a roof-mounted part and, conversely, the connected end can optionally act on a roof-mounted part or on the Ausstellarme (kinematic reversal).

Preferably, however, is a variant in which the interconnected front end of the U-shaped wire bow spring acts on the extension arms and the two rear ends are mounted on the roof side against staggered bearings.

The roof-side support can be done on a roof opening bounding a roof frame or another component of the vehicle roof. Preferably, the two staggered bearings of the rear ends of the wire bow spring are arranged on a common bearing block, which is arranged on the roof frame or a component connected thereto.

The offset of the bearings may be in the Z-direction (i.e., in the direction of the height of the vehicle) and / or in the X-direction (i.e., in the direction of the length of the vehicle). The two bearings for the trailing ends of the wire bow spring are preferably arranged in the Y direction (i.e., in the transverse direction of the vehicle) on opposite sides of the bearing block.

The wire bow spring preferably has a round cross section, so that its rear, in the Y direction on the bearing block to angled ends are rotatably mounted in the form of bores as bearings in a simple manner.

Conveniently, the wire bow spring extends laterally in the region of the extension arm and is at least partially disposed below it. When the extension arm is formed as a hollow profile, the wire bow spring can also be at least partially received by a downwardly open cavity of the extension arm when lowering the wind deflector. However, the wire bow spring can also be arranged at least partially next to the stay arm and only act on it by a connecting part.

The extension arm and / or the wire bow spring may be provided in the region in which they touch during the raising or lowering movement and perform a relative movement to each other, with a lubricious layer, for example made of plastic or a lubricating varnish.

The wind deflector will be explained in more detail by means of embodiments with reference to the drawing. It shows:

1 a partial longitudinal section through the front portion of a vehicle roof with a closable by a lid roof opening and a wind deflector;

2 the wire bow spring of the wind deflector in the lowered position of the wind deflector;

3 the wire bow spring of the wind deflector with the wind deflector in the off position;

4 an alternative embodiment of a wire bow spring of the wind deflector in the lowered position of the wind deflector;

5 a force-displacement diagram illustrating the spring characteristic of the wire bow spring.

A vehicle roof 10 contains a roof opening 12 (please refer 1 ), by a sliding lid 13 one on a roof frame surrounding the roof opening 11 stored sunroof in a known manner either to close or at least partially expose.

At the front edge 16 the roof opening 12 is a wind deflector 18 arranged, one in a direction transverse to the direction of travel (Y direction) parallel air guide 20 with two substantially perpendicular to the air guide 20 arranged lateral Ausstellarmen 22 having, for example, integral with the Luftleitprofil 20 are manufactured and angled or arcuate in the Luftleitprofil 20 go over or on the Luftleitprofil 20 can be attached. The two lateral extension arms 22 are preferably parallel to the roof opening 12 laterally delimiting side parts of the roof frame 11 arranged.

The air guide profile 20 may preferably be formed as a closed or downwardly open hollow profile, the z. B. is formed as a sheet metal part, die-cast part or plastic molding.

The free, with respect to the installation position on the vehicle roof 10 rear end of each rearward extension arm 22 is by means of a storage 24 , z. B. by means of a journal, at a roof opening 12 at least laterally limiting roof frame 11 firmly mounted bearing block 28 pivoted. The wind deflector 18 is thus basically according to the aforementioned, known wind deflector on the vehicle roof 10 adjustable, in particular to its storage 24 pivotable and, if necessary for a compensation movement in the X direction arranged longitudinally displaceable. The possibility of longitudinal compensation of storage 24 is through the slot on the bearing block 28 indicated.

The exhibition of the wind deflector 18 done by means of a wire bow spring 30 trained spring device. The wire bow spring 30 consists of a U-shaped bent spring wire with two preferably approximately equal length spring legs 32 respectively. 34 , which at their in the direction of travel (X direction) of the vehicle forward facing closed end 40 connected to each other and their rear ends 36 respectively. 38 each in a storage 44 respectively. 46 on a bearing block 42 are stored. The bearing block 42 is not far from the bearing block 28 , in one advantageous embodiment, integrally formed therewith, on the roof frame 11 attached.

The bearings 44 respectively. 46 are on the bearing block 42 so spaced apart that upon insertion of the ends 36 and 38 the wire bow spring 30 is brought into an inner bias, which is the wire bow spring 30 resiliently upward to exercise a Ausstellkraft F on the underside of the respective extension arm 22 biases.

The spacing of the bearings 44 and 46 can, as in the 1 to 3 Shown vertically (in the Z direction of the vehicle). The bearings 44 and 46 but can also be horizontal or horizontal and vertical (as in 4 shown) against each other. It is essential that by the offset of the bearings 44 and 46 one of the spring legs 32 respectively. 34 placed opposite to the other in a shortened position, resulting in the wire bow spring 30 a bending and torsional deformation-related force F results.

The wire bow spring 30 preferably has a round cross section, so that their rear, in the Y direction on the bearing block 42 to angled ends 36 respectively. 38 in the form of cylindrical bores bearings 44 respectively. 46 are rotatably mounted.

In 5 is the one at the closed end 40 the wire bow spring 30 resulting force F qualitatively (not exactly quantitative) roughly sketched. From the diagram it can be seen that the wire bow springs 30 near their position S0, according to the 1 . 2 and 4 the wind deflector 18 through the at the bottom of the lid 13 arranged when closing the lid 13 by moving forward on the top of the extension arms 22 pressing downholder 15 is held in its lowered position, a relatively large force F1 in Ausstellrichtung the wind deflector 18 unfold.

Will the lid 13 from his mechanics not shown here along the roof frame 11 arranged, also not shown guide rails for at least partially releasing the roof opening 12 from the in 1 shown closing position moves to an open position to the rear, gives the hold-down 15 by sliding on the top of the Ausstellarme 22 the wind deflector 18 successively the possibility to move up until the air guide 20 in a maximum open position (in the diagram according to 5 this corresponds to the path S3) at the front edge of the roof opening 12 upwards over the vehicle roof 10 survives to the airstream targeted over the roof opening 12 to lead to the rear.

Between the pivoted-in position S0 of the wind deflector 18 and its maximum Ausstellposition S3, the spring characteristic is initially up to a position S1 to a lower power level F2 back, remains up to a slightly above Ausstellposition S2 at about this lower level, then up to the maximum Ausstellposition S3 again approximately to the initial power level F1 increase.

The relatively large force F1 in the maximum deployment position S3 allows the wind deflector 18 even with high wind forces due to high driving speed, which still increase significantly in strong headwinds, is held securely in position and not folded down or excited to noise inducing vibrations.

The closed end 40 the wire bow spring 30 can for better sliding on the bottom of the stay arm 22 have a lubricious coating. A slip coating may also be on the bottom of the stay arm 22 be arranged.

LIST OF REFERENCE NUMBERS

10

vehicle roof

11

roof frame

12

roof opening

13

cover

14

poetry

15

Stripper plate

16

Front edge (from 12 )

18

wind deflector

20

air guide

22

out arm

24

storage

28

bearing block

30

Wire fastening spring

32

(first) spring leg (from 30 )

34

(second) spring leg (from 30 )

36

End (from 32 )

38

End (from 34 )

40

(connected) end (from 30 )

42

bearing block

42 '

bearing block

44

Storage (from 36 )

44 '

storage

46

Storage (from 38 )

46 '

storage

F

spring force

S

travel

Claims (6)

Wind deflector ( 18 ) of a vehicle roof ( 10 ), one with lateral extension arms ( 22 ) or lateral Ausstellarmen ( 22 ) hinged air guide profile ( 20 ), which by the force (F) of a spring device ( 30 ) in an operating position and against the force (F) of the spring device ( 30 ) is lowered into a rest position, characterized in that the spring device at least one U-shaped wire bow spring ( 30 ) with two spring legs ( 32 . 34 ), which at one end ( 40 ) and their other ends ( 36 . 38 ) on staggered bearings ( 44 . 46 ; 44 ' . 46 ' ) and that the two bearings ( 44 . 46 ; 44 ' . 46 ' ) are held fixed relative to each other. Wind deflector according to claim 1, characterized in that the spring device ( 30 ) with its one connected end ( 40 ) on the Ausstellarme ( 22 ) and the other ends ( 36 . 38 ) are mounted on the roof side. Wind deflector according to claim 1 or 2, characterized in that the bearings ( 44 . 46 ) in the direction of the height (Z direction) of the vehicle roof ( 10 ) are offset from each other. Wind deflector according to one of claims 1 to 3, characterized in that the bearings ( 44 ' . 46 ' ) in the direction of the length (X direction) of the vehicle roof ( 10 ) are offset from each other. Wind deflector according to one of claims 1 to 4, characterized in that the wire bow spring ( 30 ) has a round cross-section. Wind deflector according to one of claims 1 to 5, characterized in that the other ends ( 36 . 38 ) of the wire bow spring ( 30 ) in the bearings ( 44 . 46 ; 44 ' . 46 ' ) are rotatably mounted.

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