U.S. patent application number 14/308794 was filed with the patent office on 2015-08-20 for spoiler for a motor vehicle.
The applicant listed for this patent is Dr. Ing. h.c. F. Porsche Aktiengesellschaft. Invention is credited to Dominik Beierl, Jochen Meder, Haiko Neher, Frank Neubrand, Joachim Paul.
Application Number | 20150232135 14/308794 |
Document ID | / |
Family ID | 51266565 |
Filed Date | 2015-08-20 |
United States Patent
Application |
20150232135 |
Kind Code |
A1 |
Beierl; Dominik ; et
al. |
August 20, 2015 |
SPOILER FOR A MOTOR VEHICLE
Abstract
A rear spoiler for a motor vehicle has a spoiler body (14) for
deflecting a stream of air to provide an aerodynamic effect. The
spoiler body (14) has a main spoiler (16) with a main surface (21)
and an auxiliary spoiler (18) with an auxiliary surface (62). A
multi-jointed actuating kinematics (34) can move the main spoiler
(16) and the auxiliary spoiler (18) between a storage position
where the auxiliary surface (62) of the auxiliary spoiler (18) is
at least partially below the main spoiler (16) and a use position
where the auxiliary spoiler (18) is substantially in a common plane
with the main surface (21).
Inventors: |
Beierl; Dominik;
(Korntal-Muenchingen, DE) ; Meder; Jochen;
(Weissach, DE) ; Paul; Joachim; (Stuttgart,
DE) ; Neubrand; Frank; (Weil der Stadt, DE) ;
Neher; Haiko; (Sachsenheim, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Dr. Ing. h.c. F. Porsche Aktiengesellschaft |
Stuttgart |
|
DE |
|
|
Family ID: |
51266565 |
Appl. No.: |
14/308794 |
Filed: |
June 19, 2014 |
Current U.S.
Class: |
296/180.1 |
Current CPC
Class: |
Y02T 10/82 20130101;
B62D 35/007 20130101; B62D 37/02 20130101 |
International
Class: |
B62D 35/00 20060101
B62D035/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 19, 2013 |
DE |
10 2013 106 400.0 |
Claims
1. A rear spoiler for a motor vehicle, comprising a spoiler body
for deflecting a stream of air to provide an aerodynamic effect,
the spoiler body having a main spoiler with opposite upper and
lower main surfaces and, the spoiler body further having an
auxiliary spoiler with an upper auxiliary surface; and
multi-jointed actuating kinematics for shifting the spoiler body
between a storage position where the upper auxiliary surface of the
auxiliary spoiler is at least partially positioned in a direction
of gravitational force below the lower main surface of the main
spoiler and a use position where the actuating kinematics moves the
auxiliary spoiler forward and up past the main spoiler so that the
upper auxiliary surface of the auxiliary spoiler is substantially
in a common plane with the upper main surface of the main
spoiler.
2. The spoiler of claim 1, wherein the actuating kinematics have a
drive link that is movable by a drive unit, a first connecting link
and a second connecting link being connected in an articulated
manner to the drive link, and a joining link connected to the main
spoiler and connected in an articulated manner to the first and
second connecting links.
3. The spoiler of claim 2, further comprising an auxiliary drive
link and an auxiliary guide link connected in an articulated manner
to the joining link, and an auxiliary joining link connected to the
auxiliary spoiler and connected in an articulated manner to the
auxiliary drive link and to the auxiliary guide link.
4. The spoiler of claim 3, wherein the auxiliary drive link is
connected in an articulated manner to the first connecting link or
to the second connecting link.
5. The spoiler of claim 1, wherein the lower main surface is formed
with a forwardly and downwardly open receiving pocket configured
for at least partially receiving the auxiliary spoiler.
6. The spoiler of claim 1, wherein, in the use position, the
auxiliary surface merges in a flow direction in a substantially
step-free manner into the upper main surface with a separating gap
between the upper auxiliary surface at a rear end of the auxiliary
spoiler and the upper main surface at a front end of main
spoiler.
7. The spoiler of claim 1, wherein, in the use position, the
spoiler body has a surface area in a direction of travel provided
by the main spoiler and the auxiliary spoiler that exceeds a
surface area of the spoiler body in the storage position.
8. A motor vehicle with a motor vehicle body having an upper side
that faces away from an interior and can be impinged on, and the
spoiler of claim 1 articulated on the motor vehicle body, the
spoiler body having a surface that can be impinged on, wherein, in
the storage position, the surface of the spoiler body being
integrated into a shape profile of the upper side of the motor
vehicle body.
9. The spoiler of claim 1, wherein the main spoiler has closed
front and rear ends extending between opposite upper and lower main
surfaces.
10. A motor vehicle, comprising: a motor vehicle body having an
upper surface that faces away from an interior; a spoiler body for
deflecting a stream of air to provide an aerodynamic effect, the
spoiler body having a main spoiler with opposite front and rear
ends spaced apart along a forward direction of travel of the motor
vehicle, upper and lower main surfaces extending between the front
and rear ends of the main spoiler and facing outward on the main
spoiler in substantially opposite directions, the spoiler body
further having an auxiliary spoiler with an upper auxiliary
surface; and multi-jointed actuating kinematics configured for
moving the spoiler body to a storage position where the upper main
surface is integrated into a shape profile of the upper surface of
the motor vehicle body and where the upper auxiliary surface of the
auxiliary spoiler is at least partially positioned in a direction
of gravitational force below the lower main surface of the main
spoiler and in proximity to the front end of the main spoiler, and
the actuating kinematics further being configured for moving the
spoiler body to a use position where the upper main surface of the
main spoiler is spaced up from the upper surface of the motor
vehicle body and for moving the auxiliary spoiler forward and
upward relative to the main spoiler so that the auxiliary surface
is substantially in a common plane with the main surface of the
main spoiler and forward of the main surface.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims priority under 35 USC 119 to German
Patent Appl. No. 10 2013 106 400.0 filed on Jun. 19, 2013, the
entire disclosure of which is incorporated herein by reference.
BACKGROUND
[0002] 1. Field of the Invention
[0003] The invention relates to a rear spoiler for a motor
vehicle.
[0004] 2. Description of the Related Art
[0005] EP 1 118 529 A2 discloses a rear spoiler with a spoiler body
that can be shifted between a storage position and a use position
with the aid of an adjustment unit that is extendable in a
translatory manner. The spoiler body has a main spoiler that can be
shifted by the adjustment unit and an auxiliary spoiler that is
accommodated in a cavity of the main spoiler. The auxiliary spoiler
can be extended out of the main spoiler along a linear guide with
the aid of a lever drive provided within the main spoiler.
[0006] There is a need to improve the aerodynamic effect of a
spoiler by structural measures that are simple to implement.
[0007] It is the object of the invention to provide a structurally
simply constructed spoiler having a good aerodynamic effect.
SUMMARY OF THE INVENTION
[0008] The invention relates to a rear spoiler for a motor vehicle.
The spoiler comprises a spoiler body for deflecting a stream of air
to provide an aerodynamic effect. The spoiler also has
multi-jointed actuating kinematics for shifting the spoiler body
between a storage position and a use position. The spoiler body has
a main spoiler with a main surface and an auxiliary spoiler with an
auxiliary surface. The actuating kinematics can move the auxiliary
spoiler relative to the main spoiler. In the storage position, the
auxiliary surface of the auxiliary spoiler is at least partially
positioned in the direction of gravitational force below the main
spoiler. However, in the use position, the auxiliary surface of the
auxiliary spoiler is substantially in a common plane with the main
surface. The auxiliary spoiler is moveable past the main spoiler by
the actuating kinematics during a movement between the storage
position and the use position outside the main spoiler.
[0009] The main spoiler and the auxiliary spoiler of the spoiler
body can be configured as constructional units that are separated
from each other. In particular, the main spoiler does not have to
be adapted to the geometry of the auxiliary spoiler or vice versa.
In particular, it is not necessary to provide space for receiving
the auxiliary spoiler and/or kinematics for shifting the auxiliary
spoiler relative to the main spoiler within the main spoiler. Thus,
the main spoiler and the auxiliary spoiler can be constructed in a
structurally simple manner and dimensioned to save construction
space. A coupling of the movement of the main spoiler relative to
the auxiliary spoiler takes place completely outside the spoiler
body by a suitable kinematic joining of the main spoiler and the
auxiliary spoiler to the actuating kinematics. In this respect, the
spoiler body is of at least two-part design, with the main spoiler
and the auxiliary spoiler always being separated from each other by
a gap. Links are joined in an articulated manner to the main
spoiler and to the auxiliary spoiler and are connected in an
articulated manner to the actuating kinematics so that a relative
movement of links of the actuating kinematics can be converted into
a relative movement of the auxiliary spoiler with respect to the
main spoiler. As a result, the auxiliary spoiler can be moved past
the main spoiler without colliding with the main spoiler in the use
position to increase the surface of the spoiler body that can be
impinged on. The coupling of the main spoiler and the auxiliary
spoiler to the actuating kinematics separately from each other and
substantially independently permits a structurally simple spoiler
having a good aerodynamic effect.
[0010] In the use position, the auxiliary surface and the main
surface are arranged with respect to each other to avoid a
separation of a flow at the surface of the spoiler body, which
occurs due to a slipstream. An excessively sized separating gap
between the auxiliary spoiler and the main spoiler and/or an
excessively sized height offset of the auxiliary surface with
respect to the main surface can be avoided. The common plane in
which the auxiliary surface and the main surface lie can be a
rectilinear or a curved plane that preferably is continuously
differentiable. For example, the surface of the spoiler body that
is assembled by the auxiliary surface and the main surface can
have, in the direction of travel, a curved profile located in the
plane to deflect a slipstream away from the underlying surface and
to increase a contact pressure on an underlying surface.
[0011] The actuating kinematics can move the spoiler body between
the storage position, in which the spoiler body is used in an upper
side of a motor vehicle body, and the use position, in which the
spoiler body provides an aerodynamic effect. During this movement,
the main spoiler and the auxiliary spoiler carry out different
movements. For example, in comparison to the storage position, the
main spoiler can be shifted counter to the direction of travel of
the motor vehicle in the use position, whereas the auxiliary
spoiler, in comparison to the storage position, can be shifted in
the direction of travel of the motor vehicle in the use
position.
[0012] The actuating kinematics can have, for example, a linkage
with links that are connected to one another in an articulated
manner. The actuating kinematics preferably are designed as a
seven-bar linkage with seven pivoting bearings. The actuating
kinematics can have a drive link that is displaceable and/or
rotatable by a drive unit to shift the spoiler body between the
storage position and the use position and optionally to rotate the
spoiler body. In particular, intermediate positions between the
storage position and the use position can also be approached with
the aid of the actuating kinematics.
[0013] Part of the auxiliary surface can be covered by the main
spoiler in the storage position, and therefore at least part of the
auxiliary surface cannot be impinged on by a slipstream in the
storage position. The previously covered surface can appear and can
be impinged on by the slipstream in the use position. The main
spoiler has a larger surface that can be impinged on than the
auxiliary spoiler in the use position.
[0014] The actuating kinematics preferably have a drive link that
is displaceable and/or pivotable by a drive unit. First and second
connecting links are connected in an articulated manner to the
drive link. A joining link is connected to the main spoiler and is
connected in an articulated manner to the first and second
connecting link. Furthermore, a guide link is connected in an
articulated manner to the first connecting link or to the second
connecting link and can be articulated on the motor vehicle body.
As a result, upon actuation of the actuating kinematics, a defined
pivoting movement of the respective links can be predetermined with
the aid of the drive link. The actuating kinematics can thereby
have main kinematics in the form of a seven-bar linkage for
shifting the main spoiler relative to the motor vehicle body. The
drive link, the first connecting link, the second connecting link
and the joining link can be connected in an articulated manner to
one another substantially in the manner of a rectangle. A
non-parallel movement of the joining link with respect to the drive
link by a pivoting portion can be achieved by a different effective
length between the articulation points of the respective connecting
link and/or a non-parallel arrangement of the connecting links.
This makes it possible for the spoiler body to be accommodated in
an aerodynamically favorable manner in the motor vehicle body in
the storage position and for a suitable positioning angle of the
spoiler body to be approached in the use position.
[0015] An auxiliary drive link and an auxiliary guide link
preferably are connected in an articulated manner to the joining
link. An auxiliary joining link is connected to the auxiliary
spoiler and is connected in an articulated manner to the auxiliary
drive link and to the auxiliary guide link. As a result, the
actuating kinematics can have auxiliary kinematics for shifting the
auxiliary spoiler relative to the main spoiler. The auxiliary
kinematics may be configured as a four-bar linkage. With the aid of
the auxiliary guide link, the auxiliary joining link can be pivoted
about the articulated joining of the auxiliary guide link to the
joining link. Additionally, the auxiliary drive link can carry out
an additional rotation of the auxiliary joining link about the
articulated joining of the auxiliary guide link to the auxiliary
joining link by an articulated joining to the auxiliary joining
link at a distance from the articulated joining of the auxiliary
guide link to the auxiliary joining link. As a result, a movement
of the auxiliary spoiler between a position below the main spoiler
in the storage position and the position of the auxiliary spoiler
laterally next to the main spoiler in the use position past the
main spoiler can be carried out using structurally simple auxiliary
kinematics.
[0016] The auxiliary drive link is connected in an articulated
manner to the first connecting link or to the second connecting
link. Thus, the auxiliary kinematics can be actuated automatically
during a movement of the main kinematics, and therefore it is
unnecessary to provide a separate drive and/or an additional guide
for the movement of the auxiliary spoiler.
[0017] The articulated connections of the actuating kinematics may
take place via a pivoting bearing formed with the components to be
connected in an articulated manner. The respective pivoting
bearings preferably are different from one another and are spaced
apart from one another to permit a corresponding pivoting
movement.
[0018] A laterally open receiving pocket for receiving the
auxiliary spoiler preferably is formed between the actuating
kinematics and the main spoiler. The receiving socket may be
between a joining link connected to the main spoiler and a main
lower side of the main spoiler. The lower side faces away from the
main surface. The joining link can in particular be of
substantially L-shaped design on the side facing the main spoiler
in order to provide the receiving pocket between the limbs of the
imaginary L. This produces a compact arrangement of the spoiler
saving on construction space in the storage position.
[0019] The auxiliary surface preferably merges in the flow
direction in a substantially step-free manner into the main surface
via a separating gap. The separating gap can be selected to be
sufficiently small that flow separation can be avoided.
Furthermore, it is possible to select the separating gap to be
sufficiently large that, during a relative movement of the
auxiliary spoiler with respect to the main spoiler, striking of the
auxiliary spoiler against the main spoiler can be avoided.
[0020] In the use position, the spoiler body preferably has a
larger extent, provided by the main spoiler and the auxiliary
spoiler, in the direction of travel than in the storage position.
The main spoiler and the auxiliary spoiler can be pivoted relative
to each other during a movement from the storage position into the
use position along or counter to the direction of travel, and
therefore the distance over which the slipstream flows along the
spoiler body can be increased. In the use position, the auxiliary
spoiler preferably is positioned in front of the main spoiler in
the direction of travel as a type of preliminary spoiler for the
main spoiler, and therefore the slipstream first of all strikes
against the auxiliary spoiler and subsequently against the main
spoiler.
[0021] The invention also relates to a motor vehicle with a motor
vehicle body. The motor vehicle body has an upper side that faces
away from an interior and can be impinged on, and the
above-described spoiler that is articulated on the motor vehicle
body. The surface of the spoiler body that can be impinged on is
integrated, in the storage position, into the shape profile of the
upper side of the motor vehicle body. The coupling of the main
spoiler and the auxiliary spoiler permits a structurally simple
spoiler having a good aerodynamic effect for the motor vehicle.
[0022] The invention is explained by way of example below using
exemplary embodiments with reference to the attached drawings.
Features illustrated below can constitute be used individually and
also in combination.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] FIG. 1 shows a schematic side view of a spoiler in a storage
position.
[0024] FIG. 2 shows a schematic side view of the spoiler from FIG.
1 in a use position.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0025] A rear spoiler in accordance with the invention is
identified by the numeral 10 in FIG. 1 and is recessed in a motor
vehicle body 12 of a motor vehicle. The spoiler 10 has a spoiler
body 14 with an upper main spoiler 16 and an auxiliary spoiler 18
that is pivotable relative to the main spoiler 16. The spoiler body
14 has an outwardly facing surface 20 that can be impinged on. The
outwardly facing surface 20 is formed exclusively by a main surface
21 of the main spoiler 16 in the storage position illustrated in
FIG. 1. The auxiliary spoiler 18 is positioned below the main
spoiler 16 in the storage position. The surface 20 of the spoiler
body 14 can be integrated into the shape profile of an outer side
22 of the motor vehicle body 12 that faces outward from a passenger
compartment of the motor vehicle.
[0026] The spoiler body 14 is connected to actuating kinematics 34
that can move the spoiler body 14 from the storage position shown
in FIG. 1 into the use position shown in FIG. 2. The actuating
kinematics 34 has main kinematics 36 and auxiliary kinematics 38.
The main kinematics 38 define a seven-bar linkage for shifting the
main spoiler 16 relative to the motor vehicle body 12. The
auxiliary kinematics 38 are joined to the main kinematics 36 and
define a four-bar linkage for shifting the auxiliary spoiler 18
relative to the main spoiler 16. As can be seen in FIG. 2, the main
kinematics 36 have a drive link 40 that is displaceable and/or
pivotable by a drive unit and is connected in an articulated manner
to first and second connecting links 42 and 44. The first and
second connecting links 42 and 44 are connected in an articulated
manner to a joining link 46 that is connected to the main spoiler
16. The first connecting link 42 also is connected in an
articulated manner to a guide link 48 that is joined in an
articulated manner to the motor vehicle body 12. The auxiliary
kinematics 38 are joined in an articulated manner to the joining
link 46. For this purpose, an auxiliary drive link 50 and an
auxiliary guide link 52 are connected in an articulated manner to
the joining link 46. The auxiliary drive link 50 and the auxiliary
guide link 52 are connected in an articulated manner to an
auxiliary joining link 54 that is connected to the auxiliary
spoiler 18.
[0027] The main spoiler 16 has a main lower side 55 that faces away
from the main surface 21. A receiving pocket 56 is formed between
the joining link 46 and the main lower side 55 of the main spoiler
16. The auxiliary spoiler 18 can be positioned in a space-saving
manner in the receiving pocket 56 in the storage position
illustrated in FIG. 1 and can be moved out laterally from the
receiving pocket 56 by the auxiliary kinematics 38 during a
movement into the use position illustrated in FIG. 2. The auxiliary
spoiler 18 is in front of the main spoiler 16 in the use position
illustrated in FIG. 2 and is spaced from the main spoiler 16 in the
direction of travel 60 with a small separating gap 58 defined
between the main spoiler 16 and the auxiliary spoiler 18. As a
result, the main surface 21 of the main spoiler 16 and an auxiliary
surface 62 of the auxiliary spoiler 18 can be positioned in a
common plane. Therefore the surface 20 of the spoiler body 14 that
can be impinged on by a slipstream is assembled by both the main
surface 21 and by the auxiliary surface 62 and is enlarged in
comparison to the storage position.
* * * * *