U.S. patent application number 09/793926 was filed with the patent office on 2001-09-06 for spoiler sunroof.
Invention is credited to Jang-Young, Kim, Lee, Kiman, Park, Moo J..
Application Number | 20010019218 09/793926 |
Document ID | / |
Family ID | 23275104 |
Filed Date | 2001-09-06 |
United States Patent
Application |
20010019218 |
Kind Code |
A1 |
Lee, Kiman ; et al. |
September 6, 2001 |
Spoiler sunroof
Abstract
The preferred embodiment of a sunroof includes a sunroof panel,
a track, an actuating mechanism, and a panel securing member
operable to assist in securing a rear section of the panel to the
track when the panel is in a closed position. In another aspect of
the present invention, a lock assembly includes a spring biased
finger and a panel securing member which are movable relative to a
track to secure a rear section of a sunroof panel depending on the
positional relationship of the finger relative to a camming
member.
Inventors: |
Lee, Kiman; (Clinton
Township, MI) ; Jang-Young, Kim; (Youngchon-City,
KR) ; Park, Moo J.; (Youngchon-City, KR) |
Correspondence
Address: |
Monte L. Falcoff
Harness, Dickey & Pierce, P.L.C.
P.O. Box 828
Bloomfield Hills
MI
48303
US
|
Family ID: |
23275104 |
Appl. No.: |
09/793926 |
Filed: |
February 27, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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09793926 |
Feb 27, 2001 |
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09327087 |
Jun 4, 1999 |
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6199944 |
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Current U.S.
Class: |
296/223 |
Current CPC
Class: |
B60J 7/0435
20130101 |
Class at
Publication: |
296/223 |
International
Class: |
B60J 007/057 |
Claims
What is claimed is:
1. A spoiler sunroof for use in an automotive vehicle, the sunroof
comprising: a longitudinally elongated track; a cam block movably
attached to the track, the cam block having a first camming surface
and a block interface; a lever having a camming segment interfacing
with the first camming surface of the block, the lever further
having a fulcrum movably coupled to the track, the fulcrum being
substantially prevented from vertically moving relative to the
track, the lever also having a lift segment, the fulcrum being
located substantially between and offset from the camming segment
and the lift segment; and a sunroof panel reinforcement having a
main pivot and a second camming surface, the main pivot being
located adjacent a forward section of the reinforcement and being
engagable with a portion of the track, the block interface movably
engaging the second camming surface of the reinforcement; the
lifting segment of the lever being coupled to a rear section of the
reinforcement.
2. The sunroof of claim 1 wherein the track includes a
substantially L-shaped camming slot, the main pivot of the
reinforcement riding in the substantially L-shaped camming
slot.
3. The sunroof of claim 1 further comprising an actuating cable
mounted to the cam block.
4. The sunroof of claim 1 further comprising an abutment structure
projecting in a crosscar manner from a surface moving with the
reinforcement, the abutment structure being vertically movable
through a slot in the track when the reinforcement is moved from a
closed position to a venting position, the abutment structure being
movable in a fore and aft direction directly above a wall of the
track when the reinforcement is moved in the fore and aft direction
thereby deterring inadvertent collapsing of the reinforcement
toward the track when the abutment structure is rearward of the
slot of the track.
5. A spoiler sunroof comprising: a track having an upstanding
flanged wall with a localized slot; a lifting mechanism movably
coupled to the track; and an abutment structure projecting in a
lateral direction and movable with the lifting mechanism; the
abutment structure vertically moving through the slot of the track
when at least a portion of the lifting mechanism is tilted; the
abutment mechanism moving in a fore and aft direction above the
upstanding flanged wall of the track when the lifting mechanism
moves from a closed position to an open position.
6. The sunroof of claim 5 further comprising a sunroof panel
assembly which includes a substantially horizontal panel and a
panel reinforcement, the reinforcement being attached to a bottom
surface of the panel, the lifting mechanism being pivotably coupled
to the reinforcement.
7. The sunroof of claim 6 wherein the abutment structure projects
from the reinforcement.
8. The sunroof of claim 5 further comprising a sunroof panel
assembly, wherein the abutment structure is a circular-cylindrical
pin which serves to prevent undesired collapsing of the panel
assembly toward the track by abutting against the flanged wall of
the track when not aligned with the slot.
9. The sunroof of claim 5 wherein the lifting mechanism includes: a
cam coupled to the track and having a camming surface, the cam
being exclusively movable in the fore and aft direction relative to
the track; and a lever having a lifting pivot, a camming pin and a
fulcrum; the camming pin being movably driven by the camming
surface; and the fulcrum being movably coupled to the track.
10. A spoiler sunroof comprising: a sunroof panel assembly movable
from a substantially horizontal closed position to an open position
at least partially above a plane of the closed position; an
elongated track having a wall with a slot; a lifting mechanism
movably coupling the panel assembly to the track; a pin laterally
projecting from one of the panel assembly and the lifting
mechanism; the pin operably moving through the slot of the track
when the lifting mechanism raises the panel assembly; the pin
operably moving in a fore and aft direction above the wall of the
track when the lifting mechanism moves the panel assembly from the
closed position to the open position; the pin being operable to
prevent undesired collapsing of the panel assembly toward the track
by contacting against the wall of the track when not aligned with
the slot; a cam coupled to the track and having a camming surface,
the cam being movable in the fore and aft direction relative to the
track; and a lever having a lifting pivot, a camming pin and a
fulcrum, the lifting pivot being operable to lift the panel
assembly, the camming pin being movably driven by the camming
surface, and the fulcrum being movably coupled to the track.
11. The sunroof of claim 10 wherein the pin projects from the panel
assembly.
12. The sunroof of claim 10 further comprising: a lock assembly
movably coupled to the track, the lock assembly including a panel
securing member and a finger; and a biasing member operably biasing
the lock assembly in a first direction along a fore and aft axis
relative to the track.
13. The sunroof of claim 10 wherein the pin is cylindrical and the
track has a substantially horizontal upper flange, the slot is
located in the flange for allowing vertical passage of the pin when
the panel assembly is tilted.
Description
[0001] This application is a divisional application of co-pending
U.S. patent application Ser. No. 09/327,087, filed on Jun. 4, 1999,
which is incorporated herein by reference.
BACKGROUND AND SUMMARY OF THE INVENTION
[0002] The present invention generally pertains to sunroofs for use
in automotive vehicles and more particularly to spoiler sunroof
locking, actuating and sealing systems.
[0003] Two basic types of motorized sunroofs are commonly used in
automotive vehicles. A first type is a drop down opening version
where a generally flat glass or metal sunroof panel is movable from
a closed position to a tilted venting position and then to a fully
open position disposed beneath a stationary roof of the vehicle.
The second type is known as a spoiler sunroof. In most spoiler
sunroofs, the sunroof panel is movable from a closed position to a
venting position and then to a fully open position with a rear
section of the panel being disposed above the fixed roof. Spoiler
sunroofs are often used when the stationary roof behind the sunroof
is relatively small or where it is desired to maximize occupant
head room in the passenger compartment.
[0004] Examples of various conventional sunroof actuating
mechanisms are disclosed in the following U.S. Pat. Nos.: 5,765,908
entitled "Adjustment Apparatus for a Sunroof" which issued to Kelm
on Jun. 16, 1998; 5,746,475 entitled "Drive Mechanism for an
Automotive Vehicle Sunroof Assembly" which issued to Caye et al. on
May 5, 1998; 5,580,123 entitled "Sun-Roof Device" which issued to
Ochiai on Dec. 3, 1996; 5,326,149 entitled "Blocking Device for
Sliding-Lifting Roofs for Automobile" which issued to Schlapp on
Jul. 5, 1994; 5,069,501 entitled "Spoiler Sunroof Control
Mechanism" which issued to Baldwin et al. on Dec. 3, 1991; and
4,877,285 entitled "Open Roof Construction for a Vehicle" which
issued to Huyer on Oct. 31, 1989.
[0005] In accordance with the present invention, a preferred
embodiment of a sunroof includes a sunroof panel, a track, an
actuating mechanism movably coupling the panel to the track, and a
panel securing member operable to assist in securing a rear section
of the panel to the track when the panel is in a closed position.
In another aspect of the present invention, a lock assembly
includes a spring biased finger and a panel securing member which
are movable relative to a track to secure a rear section of a
sunroof panel depending on the positional relationship of the
finger relative to a camming member. A further aspect of the
present invention provides an abutment structure projecting from a
device movably associated with a sunroof panel or actuating
mechanism for abutting against a stationary track to deter
inadvertent collapsing of the panel when in a raised position.
Still another aspect of the present invention employs a lever
having a lifting pivot coupled to a sunroof panel assembly, a
fulcrum movably coupled to a stationary track, and a camming pin
interfacing with a movable camming surface. In yet another aspect
of the present invention, a bulbous seal has a pair of spaced apart
and generally parallel legs mounted to a sunroof housing.
[0006] The sunroof of the present invention is advantageous over
traditional constructions in that the lock assembly of the present
invention couples movement of a front camming mechanism to
engagement and disengagement of the panel securing member which
operably secures the rear section of the sunroof panel in its
closed position. The mechanical movements of the present invention
lock assembly provide very reliable, smooth and low effort
operational forces due, in part, to transverse spring biasing of a
finger relative to the remainder of the lock assembly while also
employing linear fore and aft spring biasing of the lock assembly
relative to the stationary track; geometrically complicated cams
are unnecessary to achieve the desired lock assembly
finger-to-actuating mechanism interface. Furthermore, the preferred
shape and materials of the preferred embodiment finger of the
present invention provide inherent lubricity and low effort
disengagement between lead in angles of the finger and the
actuating mechanism.
[0007] The specific lever and camming arrangement of the present
invention actuating mechanism enhance stability and strength of the
spoiler sunroof, while minimizing packaging space and cost,
especially as compared to many conventional constructions. The
specific geometric positioning of the fulcrum, lift pivot and
camming pin of the present invention lever achieve a well balanced,
powerful and compact mechanism to tilt the sunroof panel. This is
further enhanced by the general prevention of vertical movement of
the fulcrum relative to the track. Additionally, the abutment
structure serves as a failsafe way of deterring undesired
collapsing of the venting or open sunroof panel. This supplemental
device is especially useful in preventing contact of the sunroof
panel against the stationary roof when the vehicle is traveling at
high speeds or when a person pushes against the panel when open.
Moreover, the present invention seal is advantageous by promoting
generally vertical bulb compression when the sunroof panel is moved
from an open or venting position, to a closed position. This
vertical sealing movement serves to minimize the necessary closing
forces of the sunroof panel relative to the track and housing,
which also reduces required power of the motor. Additional
advantages and features of the present invention will become
apparent from the following description and appended claims, taken
in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a fragmentary and partially exploded perspective
view showing the preferred embodiment of a spoiler sunroof of the
present invention;
[0009] FIG. 2 is an exploded perspective view showing the preferred
embodiment spoiler sunroof;
[0010] FIG. 3 is a fragmentary and exploded side elevational view
showing the preferred embodiment spoiler sunroof;
[0011] FIG. 4 is a side elevational view showing the preferred
embodiment spoiler sunroof disposed in a fully closed position;
[0012] FIG. 5 is a top elevational view showing the preferred
embodiment spoiler sunroof in the fully closed position;
[0013] FIG. 6 is a side elevational view showing the preferred
embodiment spoiler sunroof disposed in a closed but unlocked
position;
[0014] FIG. 7 is a top elevational view showing the preferred
embodiment spoiler sunroof disposed in the closed but unlocked
position;
[0015] FIG. 8 is a side elevational view showing the preferred
embodiment spoiler sunroof disposed in a venting and partially open
position;
[0016] FIG. 9 is a top elevational view showing a lock assembly of
the preferred embodiment spoiler sunroof;
[0017] FIG. 10 is a side elevational view showing the lock assembly
of the preferred embodiment spoiler sunroof;
[0018] FIG. 11 is a diagrammatic top view showing a finger of the
lock assembly and a cam block employed in the preferred embodiment
spoiler sunroof, disposed in the fully closed and locked
position;
[0019] FIG. 12 is a diagrammatic top view showing the finger and
cam block employed in the preferred embodiment spoiler sunroof,
disposed in an intermediate locked position;
[0020] FIG. 13 is a diagrammatic top view showing the finger and
cam block employed in the preferred embodiment spoiler sunroof,
disposed in an intermediate unlocked and venting position; and
[0021] FIG. 14 is a cross sectional view, taken along line 11-11 of
FIG. 1, showing a seal and housing of the preferred embodiment
spoiler sunroof.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0022] Referring to FIGS. 1-3, the preferred embodiment of a
spoiler sunroof 21 of the present invention includes a sunroof
panel assembly 23, a metal housing 25, a panel lifting and
actuating mechanism 27, a stationary track 29, a lock assembly 31,
and a metal reinforcing pan 33. Housing 25 and reinforcing pan 33
serve to secure a pair of tracks 29 and the associated mechanisms
to a stationary fixed roof 35 (see FIG. 14) of an automotive
vehicle.
[0023] Sunroof panel assembly 23 includes a generally horizontal
(when closed) and planar glass panel 41, a bracket 43, a catch 45
and a metal reinforcement 47. Bracket 43 and catch 45 are glued
onto a bottom surface of panel 41. Bracket 43 has a bifurcated
front end 48 and a threaded fastener for disengagably attaching to
reinforcement 47. Bifurcated end 48 captures an edge 49 of an
opening in reinforcement 47. Once assembled, reinforcement 47,
bracket 43 and panel 41 always move in unison.
[0024] Actuating mechanism 27 includes a cam block 51 and a lift
lever 53. A flocked and wire wound cable 55 pushes and pulls cam
block 51 within a groove 58 of track 29. SUFLEX brand cable which
can be purchased from Suhner Manufacturing, Inc. of Rome, Ga., has
been found suitable. Cable 55 is operably driven by energization of
a fractional horsepower, direct current electric motor (not shown)
mounted to a front edge of reinforcing pan 43. Cam block 51 has a
slotted, S-shape camming surface 57. Camming surface 57 increases
in height adjacent a rear edge of cam block 51. A metal,
circular-cylindrical block pin 59 laterally projects in a crosscar
manner from a lateral face of cam block 51. Block pin 59 movably
rides within a slotted camming surface 61 projecting in a
longitudinally fore and aft direction of a downturned flange of
reinforcement 47. A bushing 63 is provided as part of block pin 59.
Feet 65 of cam block 51 ride within groove 58 and the main body of
cam block 51 vertically projects through an elongated upper opening
of track 29. A depressed pocket or aperture 67 is disposed in a
lateral face of cam block 51 opposite slotted camming surface
57.
[0025] Lifting lever 53 has a lifting pivot segment 81 which is
fastened to a rear segment of reinforcement 47 by way of a pair of
bushings 83 and a pivot pin 85. Pivot pin 85 is secured in holes of
reinforcement 47 by use of a lock ring 87. Lever 53 further has a
central fulcrum pin 89 pivotably journalled between a pair of
bushing shoes 91. Shoes 91 are operable to move in a fore and aft
direction inside groove 58 of track 29. However, the fulcrum pin is
essentially prevented from vertically moving relative to track 29.
Furthermore, a camming extension pin 93 of lever 53 rides along
camming surface 57 of cam block 51. Thus, fore and aft movement of
cam block 51 causes vertical lifting or lowering of camming pin 93
along camming surface 57. This further causes rotation of lever 53
about fulcrum pin 89 which, in turn, serves to vertically lift and
tilt reinforcement 47 and panel 41. The relationship of lifting
pivot segment 81, camming pin 93 and fulcrum pin 89 form a
triangular shape thereby compactly balancing and maximizing
mechanical forces required to lift and lower sunroof panel assembly
23. Cam block 51 and lever 53 are both preferably injection molded
from glass-filled Nylon 6/6. Track 29 and reinforcement 47 are
preferably made from aluminum.
[0026] An L-shaped camming slot 101 is stationarily mounted in
track 29. A main pivot pin 103 laterally projecting from downturned
flange of reinforcement 47 for movably riding within camming slot
101. This allows vertical initial and final movement of
reinforcement 47 and panel 41 relative to track 29 and a
weatherstrip seal 105. A cam stop 107 is also mounted to track
29.
[0027] As can best be observed in FIGS. 2, 9 and 10, lock assembly
31 has a circular-cylindrical shaft 121, an enlarged two-part head
123 and a panel assembly securing hook 125. A finger 127 is mounted
to head 123 by way of a music wire, torsion spring 129. Torsion
spring 129 has a coil and a first end disposed inside of head 123.
An opposite L-shaped end is injection molded within finger 127. An
outer periphery (as viewed from the top, like FIG. 9) of finger 127
has a predominantly curved shape. A nib 131 upwardly extends from a
trailing end of lock assembly 31 for engagement by a hook of a
music wire extension spring 133. A spring stop 135 has an elongated
circular-cylindrical shank 137, a keyhole shaped body 139 and an
enlarged head 141. Another hook of extension spring 133 engages a
nib 143 upwardly extending from shank 137. Shaft 121 of lock
assembly 31, extension spring 133, shank 137, and body 139 are all
disposed in another channel or groove 151 of track 29. Spring stop
135 is inserted into an end of groove 151 but head 141 prevents
complete insertion. Lock assembly 31 is allowed to move in a fore
and aft manner within groove 151 and is biased toward spring stop
135 by extension spring 133. Finger 127 and hook 125 project above
track 29. Lock assembly 31 and springs top 135 are preferably
injection molded from glass-filled Nylon 6/6.
[0028] Referring to FIGS. 1, 2, 7 and 8, an abutment structure 451
projects from a device movably associated with sunroof panel 41 or
actuating mechanism 27 for abutting against stationary track 29 to
deter inadvertent collapsing of panel 41 when in a raised position.
The abutment structure serves as a failsafe way of deterring
undesired collapsing of the venting or open sunroof panel. This
supplemental device is especially useful in preventing contact of
the sunroof panel against the stationary roof when the vehicle is
traveling at high speeds or when a person pushes against the panel
when open. More specifically, abutment structure 451 projects in a
crosscar manner from a surface moving with reinforcement 47.
Abutment structure 451 is vertically movable through a slot 453 in
track 29 when reinforcement 47 is moved from a closed position to a
venting position; the abutment structure is then movable in a fore
and aft direction directly above a wall 455 of track 29 when
reinforcement 47 is moved in the fore and aft direction, thereby
deterring inadvertent collapsing of the reinforcement toward the
track when the abutment structure is rearward of the slot of the
track.
[0029] The operation of spoiler sunroof 21 of the present invention
will now be explained in greater detail. FIGS. 4, 5 and 11
illustrate the spoiler sunroof and all of its mechanisms in a fully
closed position covering a sunroof opening. The left side of these
figures would be forward in the automotive vehicle. In this fully
closed orientation, main pivot 103 of reinforcement 47 is in the
lowest and forwardmost possible position relative to camming slot
101 of track 29. Furthermore, block pin 59 is disposed in a
forwardmost and uppermost possible position relative to camming
surface 61 of reinforcement 47. It is noteworthy that these slotted
camming surfaces 61 and 101 allow for additional adjusted movement
of reinforcement 47 and the sunroof panel relative to seal 105 (see
FIG. 14) if the seal does not continue to fully flex to its
original position after many years of use. Thus, complete
panel-to-seal compression is assured. Furthermore, cam block 51 is
located in its forwardmost advanced position when the spoiler
sunroof is fully closed. This causes camming pin 93 to be in its
uppermost raised orientation relative to camming surface 57.
Lifting pivot 81 is thereby rotated about fulcrum pin 89 to its
lowest possible position.
[0030] In this fully closed position, finger 127 of the lock
assembly will engage depressed aperture 67 of cam block 51.
Extension spring 133 is extended in this position and unable to
pull head 123 or finger 127 since finger 127 is laterally wedged
between an inwardly extending tab 201 of housing 25 and cam block
51. Hook 125 engages a lateral arm 203 (see FIG. 1) of catch 45
(also see FIG. 1), when the lock assembly is in its forwardmost
position. Therefore, hook 125 serves to secure a rear section of
the sunroof panel in its desired closed position, despite pressure
changes within the vehicle passenger compartment due to passenger
door closing, or when the panel would otherwise move due to rough
road driving.
[0031] Hook 125 is disengaged from catch 45 (see FIG. 1) when cam
block 51 is moved from the fully advanced position shown in FIGS.
4, 5 and 11 to the unlocked position shown in FIGS. 6, 7 and 13.
FIG. 12 shows an intermediate position wherein finger 127 of the
lock assembly is rearwardly retracted in concert with cam block 51.
In the unlocked state of FIGS. 6, 7 and 13, reinforcement 47 and
lever 53 remain unchanged relative to track 29. However, cam block
51 has been slightly moved in a linearly rearward direction. This
causes finger 127 to flex out of depressed aperture 67 in a
crosscar direction once clear of tab 201. Rearward movement of
finger 127 causes a simultaneous rearward disengagement of hook 125
from catch 45 (see FIG. 1). This allows subsequent tilting movement
of the sunroof panel.
[0032] Further energization of the electric motor causes rearward
retraction of cam block 51. First, main pivot 103 of reinforcement
47 is upwardly cammed along camming slot 101. This causes vertical
decompression of seal 105 (see FIG. 14). At the same time, camming
pin 93 is caused to begin riding down camming surface 57 of cam
block 51, thereby upwardly tilting the rear section of
reinforcement 47 and the sunroof panel. In the fully tilted venting
position, as shown in FIG. 8, block pin 59 abuts against a rearmost
edge of camming surface 61 of reinforcement 47. Also, camming pin
93 of lever 53 abuts against a forwardmost edge of camming surface
57 of cam block 51. Second, further rearward movement of cam block
51 causes the sunroof assembly to linearly move in a fore and aft
manner in the spoiler-like tilted orientation until it is fully
open. In the fully open position (not shown), the rear section of
reinforcement 47 and the sunroof panel will be upwardly tilted and
overlap the rear section of housing 25 and the adjacent stationary
roof. The preceding motions are reversed to close the sunroof.
Various hall effect sensors and microprocessor control units may be
employed in the electrical circuit associated with energization of
the electric motor, in order to define preset venting or other
positions. A sliding sunshade unit can also be used to selectively
cover the lower surface of the sunroof panel.
[0033] FIG. 13 shows a typical section of the preferred embodiment
seal 105. Seal 105 has a hollow bulbous section 221 with a
compressible internal air pocket 223. A finger 225 with a
free-standing edge 227 outwardly and upwardly extends from bulbous
section 221. A pair of hollow legs 229 and 231 downwardly project
from bulbous section 221, in a spaced apart yet parallel manner. An
air pocket 233 is disposed within each leg 229 and 231. A series of
projections 235 extend around the complete periphery of legs 229
and 231. Once installed, legs 229 and 231 are separated by an
upstanding wall 251 of housing 25. A primer and adhesive 253 are
disposed in housing pockets 255 and 257 which receive legs 229 and
231, respectively. Seal 105 is extruded from a silicone rubber
having an approximately 70 durometer. Two air access holes (not
shown) are disposed through an interior upper edge of bulbous
section 221 to allow for seal compression. Finger 225, the adjacent
portion of bulbous section 221 and the adjacent vertical side wall
of housing 25 optimally serve as a water carrying channel.
Furthermore, the vertical compression of bulbous section 221
optimizes panel-to-housing sealing far better than the traditional
horizontally extending weatherstrip projecting from a horizontal
housing flange.
[0034] While the preferred embodiment of the spoiler sunroof has
been disclosed, it will be appreciated that various other
embodiments may fall within the scope of the present invention. For
example, various aspects of the disclosed invention, such as the
lock assembly and seal, may be employed for non-spoiler type
sunroofs. Furthermore, other camming shapes and motions can be
employed. Additionally, a metal sunroof panel can be readily
substituted for the preferred glass panel. While various materials,
shapes and sizes have been disclosed, other materials, shapes and
sizes may be employed. It is intended by the following claims to
cover these and any other departures from the disclosed embodiments
which fall within the true spirit of this invention.
* * * * *