U.S. patent application number 09/782512 was filed with the patent office on 2001-09-06 for convertible motor vheicle roof.
Invention is credited to Eberle, Andreas.
Application Number | 20010019213 09/782512 |
Document ID | / |
Family ID | 7630713 |
Filed Date | 2001-09-06 |
United States Patent
Application |
20010019213 |
Kind Code |
A1 |
Eberle, Andreas |
September 6, 2001 |
Convertible motor vheicle roof
Abstract
A convertible motor vehicle roof (1) with a main roof element
(3) and at least one other roof element (2, 4), which are movably
joined to one another, and with a main bearing mechanism (6) which
pivotally mounts the main roof element (3) on the body and
transfers the former in the opening process of the motor vehicle
roof, together with the roof element (2, 4) coupled thereto, into a
stowed position, the coupled roof element (2) being moved via its
connecting means (13) which is controlled by the main bearing means
(6) during motion of the main roof element (3) roughly parallel to,
under or over the main roof element (3) when the main roof element
(3) which is supported on the body side is pivoted by the main
bearing means (3).
Inventors: |
Eberle, Andreas; (Munchen,
DE) |
Correspondence
Address: |
NIXON PEABODY, LLP
8180 GREENSBORO DRIVE
SUITE 800
MCLEAN
VA
22102
US
|
Family ID: |
7630713 |
Appl. No.: |
09/782512 |
Filed: |
February 14, 2001 |
Current U.S.
Class: |
296/108 ;
296/107.17 |
Current CPC
Class: |
B60J 7/145 20130101;
B60J 7/146 20130101; B60J 7/201 20130101 |
Class at
Publication: |
296/108 ;
296/107.17 |
International
Class: |
B60J 007/08 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 14, 2000 |
DE |
100 06 296.2 |
Claims
What is claimed is:
1. Convertible motor vehicle roof, comprising: a main roof element
and at least one other roof element which are movably joined to one
another, and a main bearing mechanism which pivotally mounts the
main roof element on a motor vehicle body and transfers the main
roof element together with the at least one other roof element
coupled thereto into a stowed position during opening of the motor
vehicle roof: wherein the at least one other roof element is
movable, via a connecting means which is controlled by the main
bearing mechanism during movement of the main roof element, roughly
parallel to the main roof element into a position the roof elements
are vertically disposed one over another when the main roof element
is pivoted by the main bearing mechanism.
2. Motor vehicle roof as claimed in claim 1, wherein the main
bearing mechanism is a main four-bar mechanism.
3. Motor vehicle roof as claimed in claim 1, wherein the main roof
element is coupled to the at least one other roof element by a
four-bar mechanism which is connected to the main bearing mechanism
in a motion transferring connection.
4. Motor vehicle roof as claimed in claim 3, wherein the four-bar
mechanism is connected via a coupling rod to the elements movble by
the main four-bar mechanism.
5. Motor vehicle roof as claimed in claim 1, wherein said at least
one other roof element comprises roof elements which are supported
to move toward one another.
6. Motor vehicle roof as claimed in claim 5, wherein the main roof
element is located between said two roof elements which comprise
comprises front and rear roof elements.
7. Motor vehicle roof as claimed in claim 5, wherein the two roof
elements are located to one side of the main roof element in a
direction of vehicle travel.
8. Motor vehicle roof as claimed in claim 6, wherein the front roof
element is displaceable over the main roof element and the rear
roof element is displaceable under the main roof element.
9. Motor vehicle roof as claimed in claim 6, wherein the front roof
element is displaceable under the main roof element and the rear
roof element is displaceable over the main roof element.
10. Motor vehicle roof as claimed in claim 5, wherein the two roof
elements are attached to the main roof element by connecting means
for one of parallel pivoting, translational displacement, and
folding around a joint to a respective position in which of the two
roof elements is under the main roof element and the other is over
the main roof element.
11. Motor vehicle roof as claimed in claim 10, wherein the two roof
elements are movably connected to the main roof element by one of a
four-bar mechanism, slide guides, pivoting joints and a combination
thereof.
12. Motor vehicle roof as claimed in claim 8, further comprising an
additional roof element which is movable by an articulated
connection, said additional roof element being connected rearward
of said rear roof element, said additional roof element being
dynamically coupled to the main bearing mechanism
13. Motor vehicle roof as claimed in claim 1, further comprising a
rear section with at least one of a roof element and a roof column
element and a rear mechanism for lowering the rear section; wherein
the main bearing mechanism is coupled via a coupling to the rear
mechanism.
14. Motor vehicle roof as claimed in claim 13, wherein the coupling
is one of a mechanical, electrical and hydraulic coupling.
15. Motor vehicle roof as claimed in claim 13, wherein the coupling
comprises a coupling rod which connects the main bearing mechanism
to the rear mechanism.
16. Motor vehicle roof as claimed in claim 13, wherein the coupling
is an electronic drive on the main bearing means and on the rear
mechanism.
17. Motor vehicle roof as claimed in claim 13, wherein the coupling
takes is a hydraulic coupling via a common drive for the main
bearing means and the rear mechanism.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The invention relates to a convertible motor vehicle roof
with a main roof element and at least one other roof element which
are movably joined to one another, and with a main bearing
mechanism which pivotally mounts the main roof element on the body
and transfers the main roof element together with the roof element
coupled thereto into a stowed position in the opening process of
the motor vehicle roof.
[0003] 2. Field of the Invention
[0004] Published German Patent Application DE 196 42 152 discloses
a motor vehicle roof of the initially mentioned type in which the
roof is divided into a front, a middle and a rear component piece
which can be transferred from a common closed position which covers
the motor vehicle interior into an open position as it is deposited
in a rear-side box for the folding roof. The front and the middle
component roof piece as well as the middle and rear component roof
piece are joined to one another via a respective articulated joint.
The rear component roof piece is supported to be able to pivot via
a rod arrangement on the body. In the opening process, first the
rear component roof piece together with the front and middle
component roof piece is pivoted as a rigidly coupled unit around
the body-side support counter to the direction of forward travel,
the front component roof piece being raised comparatively high over
the motor vehicle. Then, the front component roof piece is moved
out of this pivot position to under the middle component roof piece
and the two are shifted with a synchronous lowering motion to under
the rear component roof piece. Finally, all three component roof
pieces are inserted into the box for the folding roof in a
pivot-pushing motion.
[0005] German Patent DE 43 26 255 C1 and corresponding U.S. Pat.
No. 5,542,735 disclose a motor vehicle roof which has a B column
laterally on each side, the B column being supported to pivot and
move lengthwise in a body-mounted guide which runs roughly
horizontally over the rear axle in the lengthwise direction of the
motor vehicle. One roof part is pivotally mounted on the B-column
and extends from the B-column forward in the direction toward the
front window. To open and lower the motor vehicle roof, first the
rear window is moved under the roof part and the two rear
triangular windows are lowered. Then, the B-column is moved by
means of a drive, as a unit together with the roof part and the
rear window, to the rear lengthwise along the guide while
maintaining its vertical position. In the rear position the roof
part is folded down towards the B column and in the direction of a
stowage space. To completely lower the roof into the stowage space
behind the seats, the B-column is pivoted forward relative to the
guide, the angular position of the roof part being adapted to the
B-column and moved forward by a certain amount.
SUMMARY OF THE INVENTION
[0006] The primary object of the invention is to devise a motor
vehicle roof of the initially mentioned type which has at least two
lowerable roof elements which can be transferred into the stowed
position in an improved lowering motion.
[0007] This object is achieved in accordance with the invention in
the aforementioned motor vehicle roof by the coupled roof element
being moved via its connecting means, which is controlled by the
main bearing mechanism, during the motion of the main roof element
under or over the main roof element roughly parallel thereto when
the main roof element, which is supported on the body, is pivoted
by the main bearing mechanism. Since the roof element is moved over
or under the main roof element during the pivoting motion of the
main roof element, the height to which it is pivoted out is much
less than in the initially named motor vehicle roof. Thus, the roof
can also be opened when driving, the incident wind forces being
greatly reduced.
[0008] The main bearing during the pivoting motion of the main roof
element is preferably the main four-bar mechanism with which the
main roof element can be easily guided in a parallel pivoting
motion into the stowed position. Also, the connecting means between
the main roof element and the other roof element is feasibly a
four-bar mechanism which is connected to the main bearing means or
the main four-bar mechanism in a connection which transfers motion.
However, other types of joints and kinematic connections can be
used to achieve the desired motions.
[0009] The four-bar mechanism is advantageously connected via a
coupling rod to the elements which can be moved by the main
four-bar mechanism.
[0010] The motor vehicle roof can in addition to the main roof
element have two or three other roof elements which are supported
to be able to move toward one another. Thus a larger motor vehicle
roof can be divided into several smaller rigid roof elements which
have better stowage behavior in a small stowage space.
[0011] The individual roof elements can be arranged differently.
Thus, the main roof element can be located between the roof
elements. On the other hand, the two roof elements can be located
in the direction of travel in front of or behind the main roof
element. During motion, for example, the front roof element can be
displaced over the middle main roof element and the rear roof
element can be displaced under the middle main roof element, in the
same way as the front roof element can be displaced under the
middle main roof element and the rear roof element can be displaced
over the middle main roof element.
[0012] In various configurations, the two roof elements can be
attached to the middle main roof element with identical or
different connecting means and the connecting means can be designed
for parallel pivoting, for translational displacement or for
folding around a joint under or over the middle main roof element.
Preferably, at least two roof elements are movably connected to the
middle main roof element by means of the four-bar mechanism, slide
guides, or pivoting joints or by combinations thereof.
[0013] One embodiment calls for there to be an additional roof
element on the rear roof element which can be moved by means of an
articulated connection, especially an additional four-bar
mechanism, and which is dynamically coupled to the main bearing
means or to the rear four-bar mechanism.
[0014] Furthermore, the motor vehicle roof can additionally have a
rear section with a roof or roof column element which can be
lowered via a rear mechanism and the main bearing means can be
coupled via a coupling means to the rear mechanism. One such
coupling can be effected mechanically, electrically or
hydraulically. Preferably, the coupling takes place by a coupling
rod which connects the main bearing means to the rear
mechanism.
[0015] On the other hand, coupling can also take place
electronically via a respective drive on the main bearing means and
on the rear mechanism, or hydraulically via a common drive for the
main bearing means and the rear mechanism.
[0016] In the following, embodiments of the motor vehicle roof are
explained in detail with reference to the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is a side view schematically showing a convertible
motor vehicle roof with three roof elements in the closed
position;
[0018] FIGS. 2 to 5 each schematically shows a respective position
of the motor vehicle roof as it is moved from the closed position
(FIG. 2) to the open position (FIG. 5);
[0019] FIGS. 6.1 to 6.7 each schematically depict a respective
example of a manner in which the roof elements can be deposited;
and
[0020] FIG. 7 is a view corresponding to that of FIG. 1 but with a
rear roof element additionally attached to the motor vehicle
roof.
DETAILED DESCRIPTION OF THE INVENTION
[0021] A lowerable, convertible motor vehicle roof 1 which can be
moved in whole or in part into a receiving frame, for example, the
roof of a station wagon or an all-terrain vehicle, contains a front
roof section which has a front roof element 2, a middle roof
element 3 and a rear roof element 4 (see, FIGS. 1 & 2) which
together with a rear roof element 5 of a rear roof section cover
the interior of the vehicle in the closed position shown in FIG. 2.
By means of roof or folding roof kinematic elements, which are
located on the side edge of the roof elements 2, 3, 4,
symmetrically to the lengthwise axis of the motor vehicle, and
which are described using the elements which are shown for one
side, the motor vehicle roof 1 can be transferred from the closed
position (FIGS. 1 & 2) into the open position (FIG. 5). The
roof kinematic elements include a four-bar mechanism 6 for
supporting the middle roof element 3, which is also called the main
roof element. The four-bar mechanism 6 contains a rod 7 which is a
front rod with respect to the vehicle, and a rear rod 8. The rods
7, 8 are pivotally coupled to the body in two joints 9, 10 and to
the roof element 3 in two joints 11, 12, so that the middle roof
element 3 can be lowered to the rear in a parallel pivoting motion
around the body-side joints 9, 10. A drive (not shown) engages
either the front or the rear rod 7 or 8 and can pivot the four-bar
mechanism 6.
[0022] The front roof element 2 is coupled to the middle roof
element 3 via a front four-bar mechanism 13 which contains a main
rod 14 which is pivotally mounted on an arm 15 of the middle roof
element 3 in a joint 16, and on its front end, is coupled in a
joint 17 to the front roof element 2. The auxiliary rod 18 of the
four-bar mechanism 13 is coupled to the front roof element 2 in a
joint 19 which is located on the arm 15, which is at a distance to
the joint 16, and in a joint 20.
[0023] The rear roof element 4 contains an arm 21 with two joints
22, 23 which are spaced apart and on which a main rod 24 and an
auxiliary rod 25 of a rear four-bar mechanism 26 are pivotally
mounted. On the middle roof element 3, the main rod 24 and the
auxiliary rod 25 are coupled in respective joints 27, 28. A
coupling rod 29 is pivotally coupled to the front rod 7 of the main
four-bar mechanism 6 in a joint 30 and to the main rod 24 in a
joint 31. Another coupling rod 32 connects a joint 33, which is
located on an extension 34 of the main rod 14 of the front four-bar
mechanism 13, with a joint 35 on the auxiliary rod 25 of the
four-bar mechanism 26 (see FIG. 1). In the motor vehicle shown in
FIGS. 2 to 5, as shown in FIG. 4, the coupling rod 32 is coupled to
the joint 33' which is located on the extension 34' of the
auxiliary rod 18 of the front four-bar mechanism 13.
[0024] In the opening process of the motor vehicle roof 1, the
drive moves the main four-bar mechanism 6 together with the middle
roof element 3 in a pivoting motion in the direction to the rear
stowage position on the motor vehicle (see motion from FIG. 2 to
FIG. 3), the middle roof element 3 retaining its roughly horizontal
alignment or tilting only slightly. Via the two coupling rods 29,
32, the two four-bar mechanisms 13, 26 for the front and rear roof
elements 2, 4 are moved such that the front roof element 2 is
pivoted in a roughly parallel alignment to the middle roof element
3 to over it while, conversely, the rear roof element 4 is pivoted
in a roughly parallel alignment to the middle roof element 3 to
under it. The entire kinematic mechanism of the folding roof thus
contains 16 joints and has a single degree of freedom.
[0025] The rods are shown simplified in the figures as essentially
linear elements, but they can be made elbowed, especially for the
front four-bar mechanism 13 which is pivoted up and over the middle
roof element 3 in order to enable a space-saving rod
arrangement.
[0026] The two coupling rods 29, 32 can connect different rods to
one another depending on the space conditions to transfer the drive
motion from the main four-bar mechanism 6 to the front and rear
four-bar mechanisms 13, 26. Thus, for example, the coupling rod 29
can connect the rear rod 8 of the main four-bar mechanism 6 to the
auxiliary rod 25, and the coupling rod 32 can connect the main rod
24 of the rear four-bar mechanism 26 to the auxiliary rod 18 of the
front four-bar mechanism 13, and other combinations can also be
feasibly carried out.
[0027] FIGS. 6.1-6.7 schematic depict different alternatives for
the type of motion of the front and the rear roof elements 2, 4 to
over/under the middle roof element 3.
[0028] FIG. 6.1 shows the already described embodiment in which the
front roof element 2 can be shifted by means of the four-bar
mechanism 13 to over the middle roof element 3 and the rear roof
element 4 can be shifted to under the middle roof element 3.
[0029] FIG. 6.2 shows an alternative with these motions
interchanged.
[0030] FIG. 6.3 shows front and rear roof elements 2, 4 which are
moved by a movement means translationally to over/under the middle
roof element 3, while FIG. 6.4 shows an alternative with these
motions interchanged.
[0031] FIG. 6.5 shows a combination of parallel pivoting of the
front roof element 2 to over the middle roof element 3 and
translational motion of the rear roof element 4 to under the middle
roof element 3, while FIG. 6.6 shows an interchanged motion
sequence.
[0032] FIG. 6.7 shows a version with a pure pivoting or folding
coupling of the roof elements 2, 4 on the middle roof element
3.
[0033] Additional embodiments with other combinations can be formed
from the basic motions shown.
[0034] The main four-bar mechanism 6 can also pivotally support the
front or the rear roof element 2, 4 on the body instead of the
middle roof element 3.
[0035] FIG. 7 shows the motor vehicle roof 1 of FIG. 1 with an
additional rear roof element 36 which is pivotally coupled via an
additional four-bar mechanism 37 to the rear roof element 4. A bent
arm 38 of the rear roof element 36 is pivotally mounted via two
joints 39, 40 on two rods 41, 42 of the additional four-bar
mechanism 37, the rods 41, 42 in the joints 43, 44 being supported
on the rear roof element 4. A coupling rod 45 connects the
extension of the main rod 24 to the front rod 42 for transfer of
motion. Finally, another rear roof column 46 (D-column) can be
supported in a pivot joint 47 on the back end of the rear roof
element 36 and can be driven with a pivoting motion via a
connecting rod 48 and 49 which is connected to the additional
four-bar mechanism for folding-in.
[0036] The motor vehicle shown in FIGS. 2 to 5 furthermore contains
a rear stowable roof column 50 (D column) with a rear roof part 5
coupled thereto. A bearing means 52 for the roof column 50 contains
a rod mechanism with two coupled four-bar mechanisms (not detailed
in the Figures). The bearing means 52 is pivotally mounted via two
rods 53 and 54 on two body-mounted joints 55 and 56. One roof
column rod 57 which bears the roof column 50 is integrated in the
rod mechanism and is pivotally mounted on two joints 58 and 59. The
rear roof part 5 is driven by means of an auxiliary rod arrangement
which is forcibly moved by the bearing means 52.
[0037] A drive means can selectively drive the rod 53 or the rod 54
and alternatively also, for example, engage in the joint 55 or the
joint 56.
[0038] A coupling means in the form of a coupling rod 60 forms the
dynamic coupling between the main four-bar mechanism 6 of the
middle roof element 3 of the front roof section and the bearing
means 52 for the roof column 50. The coupling rod 60 is, on the one
hand, coupled to the rod 53 in a joint 61, and on the other hand,
to a short projection 62 of the front rod 7 of the main four-bar
mechanism 6 in a joint 63. The coupling rod 60 forms a mechanical
coupling so that synchronous motion of the roof elements 2, 3, 4
and the roof column 50 matched to one another with the rear roof
part 5 is ensured when the motor vehicle roof 1 is being stowed and
collisions of these components are precluded. A drive motion can
also be transferred via the coupling rod 60 so that only one drive
for stowing the front roof elements 2, 3,4 and the roof column 50
is necessary. This drive can engage either the main four-bar
mechanism 6 of the front roof elements 2, 3, 4 or the bearing means
52 of the roof column 50.
[0039] Further details and possibilities with regard to the
movement mechanism for the rear roof element 5, 36 and roof column
46, 50 can be found in co-pending, commonly assigned U.S. patent
application No. ______, filed on even date with this application
and claiming priority of German Patent Application No. 100 06 290.3
of Feb. 14, 2000.
* * * * *