Air guide device with bending sheet holder

Abstract

Air guide device (1) for supplying cooling air, wherein the air guide device (1) is attached to a wheel guide contour (3) by means of a fastening device (2), wherein the fastening device (2) comprises a bending sheet metal holder (10) which enables precise positioning and stable attachment of the air guide device (1) to the wheel guide contour (3) as well as compensation for tolerances on the wheel guide contour (3) with the bending sheet metal holder (10), wherein the bending sheet metal holder (10) comprises a clamping body (25), characterized in that fastening tabs (11 to 14) extend from the clamping body (25) transversely to a wheel guide longitudinal axis (5), wherein two positioning tabs (26, 27) extend away from the clamping body (25) in opposite directions in the direction of the wheel guide longitudinal axis (5), wherein the clamping body (25) clamps the wheel guide contour (3) transversely to the wheel guide longitudinal axis (5) encompasseswherein the clamping body (25) has at least one compensating section (41) which represents a compensating volume (43), wherein the clamping body (25) has at least one elastically deformable deformation section (42) which represents a bending reserve.

Description

The invention relates to an air guiding device according to the preamble of claim 1.From German laid-open specification DE 31 07 692 A1 and Japanese patent abstract JP 2010-132 208 A, devices for ventilating and cooling vehicle brakes are known. From the German laid-open specification DE 10 2011 052 175 A1, DE 10 2011 056 161 A1 and the European patent specification EP 0 778 187 B1, air guiding devices for cooling wheel brakes are known, having a profiled deflection element which is held on the vehicle side on an axle component, such as a wheel control arm. German utility model DE 88 02 975 U1 discloses an air guiding device for cooling wheel brakes of a motor vehicle, having a profiled deflection element which is set against the incoming air flow and is held on the vehicle side on the wheel link and is arranged so as to lead the air flow to the brake, wherein the U-shaped receptacle is surrounded by a bracket which can be connected at the end side to the link via fastening screws. German laid-open specification DE 10 2006 061 308 A1 discloses a holder having at least one spring element for pressing a component onto a vehicle window, wherein the spring element is connected to a retaining foot which can be connected to the vehicle window by adhesive bonding and to a holder frame comprising the component, wherein the holder frame, after mounting on the vehicle window, is held at a distance from the vehicle window by at least one holder foot formed on the holder frame, and wherein the at least one spring element is formed integrally on the holder frame, wherein the at least one spring element is formed as a spring clip which is formed on one side of the holder frame and can be latched to another side of the holder frame, wherein the spring clip latched to the holder frame engages over the receiving opening and bears resiliently against the component inserted into the receiving opening.Proceeding from the prior art, the object of the invention is to enable stable fastening of an air guiding device for supplying cooling air to a wheel control arm contour in a simple manner with the aid of a fastening device.The object is achieved by an air guiding device having the features of claim 1 and by a bending plate holder having the features of claim 7. This provides the advantage that the wheel link can be designed, for example, as a forged part without the tolerance-afflicted wheel link contour having to be processed in order to position the air-guiding device exactly on the wheel link contour and to fix it in a stable manner. Casting and forging contours have a wide tolerance band. Above all in the area of tool parting, casting and / or forging contours often deviate greatly from a theoretical target contour. This has the result that connection geometries can only be implemented with difficulty on unprocessed casting and / or forging surfaces. Fits and clean shape-locking structures are generally not possible without machining. By means of the claimed bending plate holder, the fastening device can be positioned, aligned and fastened in a defined manner on the unprocessed suspension arm. The bending plate holder is particularly advantageously constructed such that the bending plate holder, when fastened, in particular when tightening fastening means such as screws, with which the bending plate holder is fastened, for example, to the air guiding device, fits against the unprocessed wheel link contour. A stable fastening of the air guiding device to the wheel link contour is made possible in a simple manner. The clamping body is advantageously fastened with its ends facing away from one another to the air guiding device. In this case, the clamping body engages around the wheel link in a substantially U-shaped manner. The compensating volume on the clamping body is advantageously arranged in a region of a particular imprecision of the blank, in particular in the region of a tool separation of a tool which is used for producing the wheel control arm. A component geometry of the wheel control arm subject to tolerances can thus yield into the compensation volume without the stability of the fastening of the air guiding device to the wheel control arm being impaired. The bending reserve is advantageously dimensioned such that, when the fastening means described above are tightened, maximum tolerances to be expected on the unprocessed wheel control arm contour are automatically compensated for by the bending plate holder.A preferred exemplary embodiment of the air guiding device is characterized in that the clamping body has fastening regions at opposite ends, which fastening regions are fixed to the air guiding device with the aid of fastening means, wherein the clamping body can deform in the elastically deformable deformation section in order to compensate tolerances on the suspension arm contour until the bending reserve is used up. The fastening means are, for example, screws which are screwed into corresponding threaded bores on the air guiding device in order to fix the fastening regions of the clamping body on the air guiding device. To produce the bending reserve, the bending plate holder is formed from a suitable sheet metal material. The sheet material is, for example, an aluminum sheet material or a stainless steel sheet material.A further preferred exemplary embodiment of the air guiding device is characterized in that the fastening regions are arranged perpendicular to one another. For fastening to the air guiding device, fastening domes are advantageously attached to the air guiding device, which are equipped with fastening surfaces which are likewise arranged perpendicular to one another. During assembly, a fastening region is advantageously initially fixed to the air guiding device. When the fastening means are tightened in the second fastening region, a desired deformation is then initiated in the deformation section of the clamping body.A further preferred exemplary embodiment of the air guiding device is characterized in that the fastening regions each comprise at least two through-holes spaced apart from one another. Thus, each fastening region can be fixed in a simple manner in a reproducible and stable manner on the air guiding device.A further preferred exemplary embodiment of the air guiding device is characterized in that the bending plate holder has at least two positioning tabs which start from the clamping body and extend parallel to the longitudinal axis of the wheel link in opposite directions. Thus, the bending plate holder can be positioned in a simple manner stably on the wheel link in the direction of the longitudinal axis of the wheel link.The invention further relates to a bending plate holder for an air guiding device described above. The bending plate holder can be sold separately.The invention optionally also relates to a motor vehicle having an air guiding device described above.Further advantages, features and details of the invention will become apparent from the following description, in which various exemplary embodiments are described in detail with reference to the drawing. The following are shown: FIG. 1 is an exploded view of an air guiding device which can be fastened to a wheel link with the aid of a fastening device which is designed as a bending plate holder; and FIGS. 2, 3 to 4 show three different perspective views of the bending plate holder in the fastened state.FIG. 1 shows an exploded view of an air-guiding device 1 with a fastening device 2 and a wheel control arm 3. The wheel control arm 3 is a suspension arm of a motor vehicle. The wheel control arm or suspension arm 3 is designed as a forged part and accordingly has a tolerance-afflicted wheel control arm contour 4.The suspension arm 3 comprises a suspension arm longitudinal axis 5, along which the suspension arm 3 extends from one end 6 to an opposite end 7. The end 6 serves for the articulation of the wheel control arm 3 to a wheel of the motor vehicle. The end 7 serves for the articulation of the wheel anchor 3 to the motor vehicle. Between its ends 6, 7, the wheel link 3 also has a connection point 8 for connecting or linking a trailing link to the wheel link 3.The fastening device 2 is designed as a bending plate holder 10. The bending plate holder 10 comprises two fastening regions 15, 16, by means of which the bending plate holder 10 is fastened to the air guiding device 1.The fastening region 15 comprises two fastening tabs 11, 12 each comprising a through hole 17, 18. The fastening region 16 comprises two fastening tabs 13, 14, each of which comprises a through hole 19, 20.The through-holes 17 to 20 serve for the passage of fastening means 21 to 24, by means of which the bending plate holder 10 is fastened to the air guiding device 1 in the fastening regions 15, 16. The fastening means 21 to 24 are screws. The screws 21 to 24 are screwed into fastening domes 31 to 34 which are formed on the air guiding device 1.The bending plate holder 10 further comprises a clamping body 25 from which the fastening tabs 11 to 14 extend. The fastening lugs 11 to 14 extend substantially transversely to the wheel arm longitudinal axis 5. two positioning lugs 26, 27 extend substantially in the direction of the wheel arm longitudinal axis 5, but away from the clamping body 25 in opposite directions.It can be seen in FIGS. 2, 3 to 4 that the bending plate holder 10 with the clamping body 25 engages around the wheel control arm 3 in a substantially U-shaped manner. The clamping body 25 rests with a base 28 against the wheel control arm 3. A lower leg 29 connects the base 28 to the attachment tabs 11, 12. an upper leg 30 connects the base 28 to the attachment tabs 13, 14. The fastening lugs 11, 12 extend in extension of the leg 29.The clamping body 25 comprises a compensating section 41 between the base 28 and the leg 29, and the clamping body 25 comprises a deformation section 42 between the base 28 and the leg 30, the compensating section 41 serving to form a compensating volume 43. the deformation section 42 enables a desired deformation when the bending plate holder 10 is fastened to the air guiding device 1.In FIG. 2, an arrow 45 indicates how the bending sheet holder 10 in FIG. 2 is fastened to the air guiding device 1 from below. An arrow 44 in FIG. 2 indicates how the bending plate holder 10 in FIG. 2 is fastened to the air guiding device 1 from the left.FIG. 3 shows how the bending plate holder positions and supports itself with its positioning lugs 26, 27 on the wheel link contour 4 of the wheel link 3. The positioning tab 26 is supported with its free end on a shim device 46. The positioning tab 27 is supported with its free end at the connection point 8 for a not-shown trailing arm.A line 47 and an arrow 48 indicate in FIG. 3 how tolerances on the wheel link 3 and / or on the air guide device 1 can be compensated for by the bending plate holder 10 by a desired deformation in the deformation section 42.Reference numerals denote reference numerals1 Air guiding device 2 Fastening device 3 Wheel link 4 Wheel link contour 5 Wheel link longitudinal axis 6 End 7 End 8 Connection point 10 Bending plate holder 11 Fastening tab 12 Fastening tab 13 Fastening tab 14 Fastening tab 15 Fastening region 16 Fastening region 17 Through hole 18 Through hole 19 Through hole 20 Through hole 21 Fastening means 22 Fastening means 23 Fastening means 24 Fastening means 25 Clamping body 26 Positioning tab 27 Positioning tab 28 Base 29 Leg 30 Leg 31 Fastening dome 32 Fastening dome 33 Fastening dome 34 Fastening dome

Claims

Air guiding device (1) for supplying cooling air, wherein the air guiding device (1) is fastened to a wheel link contour (3) with the aid of a fastening device (2), wherein the fastening device (2) comprises a bending plate holder (10), which enables exact positioning and stable fastening of the air guiding device (1) to the wheel link contour (3) and compensation of tolerances on the wheel link contour (3) with the bending plate holder (10), wherein the bending plate holder (10) comprises a clamping body (25), characterized in that fastening tabs (11 to 14) extend transversely to a wheel link longitudinal axis (5) start from the clamping body (25), wherein two positioning tabs (26, 27) extend in opposite directions away from the clamping body (25) in the direction of the wheel link longitudinal axis (5), wherein the clamping body (25) engages around the wheel control arm contour (3) transversely to the wheel control arm longitudinal axis (5), wherein the clamping body (25) has at least one compensating portion (41) which represents a compensating volume (43), wherein the clamping body (25) has at least one elastically deformable deformation portion (42) which represents a bending reserve.Air guiding device (1) according to Claim 1, characterized in that the clamping body (25) has fastening regions (15, 16) at opposite ends, which fastening regions are fixed to the air guiding device (1) with the aid of fastening means (21-24), wherein the clamping body (25) can deform in the elastically deformable deformation section (42) in order to compensate tolerances on the wheel link contour (3) until the bending reserve is used up.Air guiding device (1) according to Claim 2, characterized in that the fastening regions (15, 16) are arranged perpendicular to one another.Air guiding device (1) according to Claim 2 or 3, characterized in that the fastening regions (15, 16) each comprise at least two through-holes (17, 18; 19, 20) spaced apart from one another.Air guiding device (1) according to one of the preceding claims, characterized in that the bending plate holder (10) has at least one positioning tab (26, 27) which originates from the clamping body (25) and extends parallel to the longitudinal axis (5) of the wheel link.Air guiding device (1) according to one of the preceding claims, characterized in that the bending plate holder (10) has at least two positioning lugs (27, 27) which start from the clamping body (25) and extend parallel to the longitudinal axis (5) of the wheel link in opposite directions.Bending plate holder (10) for an air guiding device (1) according to one of the preceding claims.

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