Air flap apparatus having integrated light guides for a motor vehicle

Abstract

An air flap apparatus for a motor vehicle encompasses a frame having a flowthrough opening, on which frame at least one air flap is mounted movably relative to the frame, protrudingly into the flowthrough opening or penetratingly therethrough, the at least one air flap being displaceable between a closed position and an open position in order to modify a gas quantity flowing per unit time through the flowthrough opening in the context of a predefined impinging flow, the at least one air flap decreasing a flowthrough-capable cross section of the flowthrough opening more greatly in the closed position than in the open position, the air flap apparatus further encompassing a movement drive system that is coupled in movement- and force-transferring fashion to the at least one air flap in order to drive the at least one air flap to move between the closed position and the open position, at least one air flap constituting a light-emitting air flap including a flap light guide having a light emergence surface through which light transferred in the flap light guide can emerge to the external environment of the light-emitting air flap.

Claims

1. An air flap apparatus for a motor vehicle comprising a frame having a flowthrough opening, the air flap apparatus further comprising at least one air flap mounted movably relative to the frame, protrudingly into the flowthrough opening or penetratingly therethrough, the at least one air flap being displaceable between a closed position and an open position in order to modify a gas quantity flowing per unit time through the flowthrough opening in the context of a predefined impinging flow, the at least one air flap decreasing a flowthrough-capable cross section of the flowthrough opening more greatly in the closed position than in the open position, the air flap apparatus further including a movement drive system that is coupled in movement- and force-transferring fashion to the at least one air flap in order to drive the at least one air flap to move between the closed position and the open position, one or more air flaps of the at least one air flap of the air flap apparatus being a light-emitting air flap comprising a flap light guide having a light emergence surface through which light transferred in the flap light guide can emerge to an associated external environment of the one or more light-emitting air flap, wherein a frame light guide, which is coupled in light-transferring fashion to the flap light guide of the one or more light-emitting air flap, is retained on the frame.

2. The air flap apparatus according to claim 1, wherein the flap light guide of the one or more light-emitting air flap comprises an optical coupling segment that is coupled in light-transferring fashion to a counterpart optical coupling segment of the frame light guide.

3. The air flap apparatus according to claim 2, wherein the frame light guide comprises, at a distance from the counterpart optical coupling segment, an introduction segment that is embodied for introduction of light into the frame light guide.

4. The air flap apparatus according to claim 1, further comprising a light source that is in light-transferring communication with the frame light guide in such a way that light emitted from the light source is transferrable by the frame light guide.

5. The air flap apparatus according to claim 4, wherein the light source includes at least one LED.

6. The air flap apparatus according to claim 4, further comprising a control apparatus that is embodied to control both the operation of the movement drive system and the operation of the light source.

7. The air flap apparatus according to claim 6, wherein the control apparatus is embodied to operate the light source as a function of an operating state of the movement drive system.

8. The air flap apparatus according to claim 6, wherein the control apparatus is received together with the movement drive system in one housing.

9. The air flap apparatus according to claim 6, wherein the control apparatus is received together with the movement drive system in one housing and is embodied as a combined controller/actuator subassembly.

10. The air flap apparatus according to claim 1, wherein the one or more light-emitting air flap is a plurality of light-emitting air flaps that each comprise a flap light guide having a light emergence surface, the flap light guides being coupled in light-transferring fashion to the frame light guide.

11. The air flap apparatus according to claim 10, wherein the frame light guide contributes to the constitution of a coupling component that couples the plurality of light-emitting air flaps for movement together between the closed position and the open position, or is the coupling component.

12. The air flap apparatus according to claim 1, wherein the one or more light-emitting air flap comprises, on its front side impinged upon by flow during operation as intended, an aperture through which light is radiatable from the flap light guide to the associated external environment of the light-emitting air flap.

13. The air flap apparatus according to claim 12, wherein the one or more light-emitting air flap comprises, on its rear side located oppositely from the front side impinged upon by flow during operation as intended, an enclosure that covers, on more than two sides, at least one of the flap light guide and a diffuser apparatus coupled in light-transferring fashion thereto.

14. The air flap apparatus according to claim 1, wherein the one or more light-emitting air flap is a plurality of light-emitting air flaps that are arranged on the frame successively to one another along a succession axis, the air flap apparatus additionally comprising a plurality of flow-directing surfaces that are mounted on the frame immovably relative thereto and project into or pass through the flowthrough opening.

15. An air flap apparatus for a motor vehicle comprising a frame having a flowthrough opening, the air flap apparatus further comprising at least one air flap mounted movably relative to the frame, protrudingly into the flowthrough opening or penetratingly therethrough, the at least one air flap being displaceable between a closed position and an open position in order to modify a gas quantity flowing per unit time through the flowthrough opening in the context of a predefined impinging flow, the at least one air flap decreasing a flowthrough-capable cross section of the flowthrough opening more greatly in the closed position than in the open position, the air flap apparatus further including a movement drive system that is coupled in movement- and force-transferring fashion to the at least one air flap in order to drive the at least one air flap to move between the closed position and the open position, one or more air flaps of the at least one air flap of the air flap apparatus being a light-emitting air flap comprising a flap light guide having a light emergence surface through which light transferred in the flap light guide can emerge to an associated external environment of the one or more light-emitting air flap, wherein the one or more light-emitting air flap comprises an optical diffuser apparatus that is coupled in light-transferring fashion to the light emergence surface of the flap light guide.

16. The air flap apparatus according to claim 15, wherein the one or more light-emitting air flap comprises, on its front side impinged upon by flow during operation as intended, an aperture through which light is radiatable from the flap light guide to the associated external environment of the light-emitting air flap.

17. The air flap apparatus according to claim 15, wherein the one or more light-emitting air flap is a plurality of light-emitting air flaps that are arranged on the frame successively to one another along a succession axis, the air flap apparatus additionally comprising a plurality of flow-directing surfaces that are mounted on the frame immovably relative thereto and project into or pass through the flowthrough opening.

18. An air flap apparatus for a motor vehicle comprising a frame having a flowthrough opening, the air flap apparatus further comprising at least one air flap mounted movably relative to the frame, protrudingly into the flowthrough opening or penetratingly therethrough, the at least one air flap being displaceable between a closed position and an open position in order to modify a gas quantity flowing per unit time through the flowthrough opening in the context of a predefined impinging flow, the at least one air flap decreasing a flowthrough-capable cross section of the flowthrough opening more greatly in the closed position than in the open position, the air flap apparatus further including a movement drive system that is coupled in movement- and force-transferring fashion to the at least one air flap in order to drive the at least one air flap to move between the closed position and the open position, one or more air flaps of the at least one air flap of the air flap apparatus being a light-emitting air flap comprising a flap light guide having a light emergence surface through which light transferred in the flap light guide can emerge to an associated external environment of the one or more light-emitting air flap, wherein the one or more light-emitting air flap comprises, on its front side impinged upon by flow during operation as intended, an aperture through which light is radiatable from the flap light guide to the associated external environment of the light-emitting air flap, wherein the one or more light-emitting air flap comprises, on its rear side located oppositely from the front side impinged upon by flow during operation as intended, an enclosure that at least partly covers, on at least two sides, at least one of the flap light guide and a diffuser apparatus coupled in light-transferring fashion thereto.

19. The air flap apparatus according to claim 18, wherein the one or more light-emitting air flap is a plurality of light-emitting air flaps that are arranged on the frame successively to one another along a succession axis, the air flap apparatus additionally comprising a plurality of flow-directing surfaces that are mounted on the frame immovably relative thereto and project into or pass through the flowthrough opening.

20. The air flap apparatus according to claim 18, wherein the one or more light-emitting air flap comprises, on its rear side located oppositely from the front side impinged upon by flow during operation as intended, an enclosure that covers, on more than two sides, at least one of the flap light guide and a diffuser apparatus coupled in light-transferring fashion thereto.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention may take physical form in certain parts and arrangement of parts, a preferred embodiment of which will be described in detail and illustrated in the accompanying drawings which form a part hereof and wherein:

(2) FIG. 1 is a schematic plan view of an embodiment according to the present invention of an air flap apparatus of the present Application, looking toward the rear side that faces away from what is the impinging-flow side during operation, with the air flaps in the closed position;

(3) FIG. 2 is the view of FIG. 1 with the air flaps in the open position; and

(4) FIG. 3 is a schematic longitudinal section view of a light-emitting air flap of the air flap apparatus of FIGS. 1 and 2.

(5) Be it noted expressly that the Figures for the present Application are not accurately to scale, nor do they accurately depict a relative movement of air flaps relative to the frame. The Figures serve merely to illustrate the principle of the present invention and are correspondingly schematic in nature.

DESCRIPTION OF PREFERRED EMBODIMENTS

(6) Referring now to the drawings wherein the showings are for the purpose of illustrating preferred and alternative embodiments of the invention only and not for the purpose of limiting the same, FIGS. 1 and 2 show an embodiment according to the present invention of an air flap apparatus for a vehicle that is labeled in general as 10. Air flap apparatus 10 encompasses a frame 12 that is embodied for mounting on a motor vehicle 11. Frame 12 comprises a passthrough opening 14 constituted from two passthrough sub-openings 14a and 14b. When viewed in the impinging flow direction that is orthogonal to the drawing plane of FIGS. 1 and 2, a plurality of substantially identical air flaps 16 are mounted, rotatably around rotation axes D, penetratingly through the respective flowthrough sub-openings 14a and 14b. In the interest of clarity, only individual air flaps 16 and rotation axes D are labeled with reference characters. It is nevertheless apparent that all the air flaps of the present Application are embodied as identical air flaps 16. Air flaps 16 that pass through flowthrough sub-opening 14b on the right in FIGS. 1 and 2 are arranged mirror-symmetrically with respect to air flaps 16 that pass through flowthrough sub-opening 14a on the left in FIGS. 1 and 2. In light of the symmetry condition that exists, it is therefore sufficient to describe in detail only one of air flaps 16, a description thereof likewise being applicable, given the aforesaid symmetry condition, to all the other air flaps 16 of air flap apparatus 10.

(7) Air flap apparatus 10 furthermore encompasses a movement drive system 18 in the exemplifying form of a spindle drive, which can be activated to move by a control apparatus 20 of air flap apparatus 10.

(8) An air flap 16 comprises an air flap blade 22 that is arranged eccentrically with respect to the respective rotation axis D. Rotation axis D of an air flap 16 is defined by bearing bolts 24 and 26 that project away from bearing bolt carriers 28 and 30 coaxially from the longitudinal center of air flap blade 22.

(9) Bearing bolt carriers 28 and 30 in turn project from rear side 22b, not impinged upon by flow during operation, of air flap blade 22.

(10) Bearing bolts 26 are visible only in FIGS. 2 and 3.

(11) Bearing bolts 24 and 26 of an air flap 16 pass through associated bearing blocks 32 and 34 that are provided on frame 12 in order to mount air flaps 16. Air flap 16 is thus unequivocally defined in terms of its location relative to the frame, its rotation axis D in particular being unequivocally determined by bearing bolts 24 and 26 and unequivocally by bearing blocks 32 and 34 around which air flap 16 is displaceable between its closed position shown in FIG. 1 and its open position shown in FIG. 2. In the present example, the rotation axes of air flaps 16 are located behind (in impinging flow direction A) the segment in frame 12 which defines passthrough opening 14. The impinging flow direction is parallel to forward travel direction V of vehicle 11, but directed oppositely.

(12) A light source 38 in the form of an LED arrangement is received on frame 12 in a receiving chamber 36. Light source 38 supplies light to light guides that will be described in further detail below.

(13) As depicted in FIG. 3, air flap 16 comprises an aperture 40 that passes completely through air flap blade 22 between its front side 22a impinged upon by flow during operation, and its rear side 22b. Arranged in this aperture 40, as depicted in FIG. 3, is a flap light guide 42 whose operationally intended light emergence surface 42a faces toward the external environment of air flap 16, specifically through aperture 40 toward the front side of air flap apparatus 10 and of vehicle 11 that is carrying it.

(14) In order to achieved particularly wide scattering of the light emerging from light emergence surface 42a of flap light guide 42, there is provided on light emergence surface 42a of flap light guide 42 an optical diffuser arrangement 44 that has a light-scattering surface topology on its light emergence surface 44a.

(15) Light emergence surface 42a of flap light guide 42 is provided on an emergence segment 46 that projects into recess 40 of air flap blade 22.

(16) Air flap blade 22 comprises, on its rear side 22b facing away from front side 22a impinged upon by flow, an enclosure 48 that completely peripherally surrounds both an end region, comprising light emergence surface 42a, of emergence segment 46 of flap light guide 42, and a segment of optical diffuser apparatus 44.

(17) Enclosure 48, like air flap blade 22, is also manufactured from light-tight material, preferably by injection molding of a thermoplastic material.

(18) Enclosure 48 prevents scattered light, undesirably emerging laterally from emergence segment 46, from being visible through passthrough opening 14 from outside vehicle 11 when air flap apparatus 10 is open.

(19) Adjoining emergence segment 46 of flap light guide 42 is an optical coupling segment 50 that projects from emergence segment 46 along longitudinal axis L of air flaps 16 which coincides with rotation axis D.

(20) Optical coupling segment 50 is received, without mechanical clearance, in a groove 52 of bearing bolt carrier 30 that carries bearing bolts 26, so that force and torque are transferable from optical coupling segment 50 to air flap 16.

(21) Optical coupling segment 50 projects into a connecting strut 54 constituted from light guide material and passes through it, such that connecting strut 54 made of light guide material constitutes, with its aperture 56 passed through by optical coupling segment 50, a counterpart optical coupling segment of connecting strut 54. Connecting strut 54 thus constitutes a frame light guide 54 retained in movably guided fashion on frame 14.

(22) The two connecting struts or frame light guides 54 shown in FIGS. 1 and 2 are connected to light source 38 via flexible light guides 57 that can be constituted from bendable glass-fiber bundles. Each of the two frame light guides 54 comprises at its one longitudinal end an introduction segment 58 at which light transfer from flexible light guides 57 to frame light guides 54 occurs. The frame light guides can thus always, regardless of their operating position, transfer light from light source 38 via flexible light guides 57, introduction segment 58, counterpart optical coupling segment 56, and optical coupling segment 50 to flap light guides 46 and thus to optical diffusion apparatuses 44, and radiate it to the front side of the respective air flaps 16.

(23) Frame light guides 54, which are also connecting struts 54 and which couple air flaps 16 of a flowthrough sub-opening 14a or 14b for pivoting movement together around the respective rotation axes D, are coupled to drive spindle 61 of movement drive system 18.

(24) Control apparatus 20 operates both movement drive system 18 and light source 38, so that the light emission of air flap apparatus 10 through optical diffusion apparatuses 44 is controllable as a function of the operation of movement drive system 18, but does not need to be controlled as a function of its operation.

(25) Light source 38 can be modifiable as to color and/or as to brightness, i.e. dimmable.

(26) While considerable emphasis has been placed on the preferred embodiments of the invention illustrated and described herein, it will be appreciated that other embodiments, and equivalences thereof, can be made and that many changes can be made in the preferred embodiments without departing from the principles of the invention. Furthermore, the embodiments described above can be combined to form yet other embodiments of the invention of this application. Accordingly, it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.