FIELD OF THE DISCLOSURE
[0001] The present application relates to a passenger vehicle for transporting one or more
passengers, and more particularly to a docking system for releasably coupling a wheelchair
to a floor in a vehicle.
BACKGROUND
[0002] Automobile manufacturers do not currently mass-produce passenger motor vehicles specifically
designed to transport passengers having physical limitations, either as a driver or
as a non-driving passenger. Consequently, mass-produced passenger vehicles are modified,
or retrofitted, by a number of aftermarket companies dedicated to supplying vehicles
to physically limited passengers. Such vehicles can be modified by removing certain
parts or structures within a vehicle and replacing those parts with parts specifically
designed to accommodate the physically limited passenger. For example, in one configuration,
a van or bus is retrofitted with a ramp to enable a physically limited individual
using a wheelchair to enter and exit the vehicle without the assistance of another
individual.
[0003] Other known products for retrofitting a vehicle, such as a van, bus, sport-utility
vehicle, or motor coach, include wheel chair lifts, lift platforms, ramps, wheelchair
docks, securement systems, and lowered floor surfaces. In some instances, a floor
of an original equipment manufacturer (OEM) vehicle is completely removed and replaced,
lowered or otherwise modified to accommodate the entry and exit of the physically
limited individual through a side door or entrance of the vehicle.
SUMMARY
[0004] In a first embodiment of the present disclosure, a wheelchair docking system for
being coupled to a floor includes a frame having an upper portion and a lower portion,
the upper portion being movable relative to the lower portion between a lowered position
and a raised position; a coupler mechanism configured to engage a wheelchair during
a docking operation, the coupler mechanism being positioned on the upper portion;
a first latching mechanism being movable between a retracted position and a latching
position, the first latching mechanism spaced from the coupler mechanism; and a second
latching mechanism for moving the upper portion of the frame between its lowered position
and raised position; wherein, the first latching mechanism is partially retracted
by a wheelchair during the docking operation; wherein, the first latching mechanism
is biased to its latching position when the coupler mechanism engages the wheelchair.
[0005] In a first example of this embodiment, the first latching mechanism is biased to
its latching position by a spring. In a second example, the first latching mechanism
comprises a locking pin. In a third example, an actuator is coupled to the locking
pin, the actuator being operably actuated between an extended position and a retracted
position to move the locking pin between its latching position and its retracted position.
[0006] In a fourth example, a first scissor assembly is operably coupled between the upper
portion and the lower portion; and a second scissor assembly operable coupled between
the upper portion and the lower portion, the second scissor assembly being spaced
longitudinally from the first scissor assembly. In a fifth example, the first scissor
assembly and the second scissor assembly each includes a first leg and a second leg,
the first leg and second leg being coupled to one another via a connection pin. In
a sixth example, the first leg is disposed outwardly of the second leg.
[0007] In a seventh example, the first leg is coupled to an external location of the upper
portion and an internal location of the bottom portion; the second leg is coupled
to an internal location of the upper and lower portions. In an eighth example, one
end of the first leg is affixed to the lower portion and an opposite end is slidably
coupled to the upper portion; one end of the second leg is affixed to the upper portion
and an opposite end is slidably coupled to the lower portion. In a ninth example,
the second leg of the first scissor assembly is coupled to the second leg of the second
scissor assembly via a longitudinal member.
[0008] In a tenth example, the first or second scissor assembly is coupled to a cross member.
In an eleventh example, an actuator is coupled to the cross member, the actuator being
operably actuated between an extended position and a retracted position to move the
cross member longitudinally; wherein, as the cross member moves longitudinally, the
upper portion of the frame moves between its lowered position and raised position.
[0009] In another embodiment of the present disclosure, a wheelchair docking system for
being coupled to a floor includes a frame having an upper portion and a lower portion,
the upper portion being movable relative to the lower portion between a lowered position
and a raised position; a coupler mechanism configured to engage a wheelchair during
a docking operation, the coupler mechanism being positioned on the upper portion;
a first latching mechanism being movable between a retracted position and a latching
position, the first latching mechanism spaced from the coupler mechanism; a second
latching mechanism for moving the upper portion of the frame between its lowered position
and raised position; a first release mechanism for operably controlling movement of
the first latching mechanism; and a second release mechanism for operably controlling
the second latching mechanism to move the upper portion from its lowered position
to its raised position.
[0010] In one example of this embodiment, an actuator is coupled to the first latching mechanism,
the actuator being operably actuated between an extended position and a retracted
position to move the first latching mechanism between its latching position and its
retracted position. In a second example, the first release mechanism includes a user
control for communicating with a controller, the controller operably actuating the
actuator between its extended and retracted positions; a plate coupled to the first
latching mechanism via a pin, the plate being coupled to the actuator; a spring for
biasing the first latching mechanism to its latching position; wherein, upon receiving
a command from the user control to enable the first release mechanism, the controller
operably actuates the actuator which moves the plate for compressing the spring; wherein,
as the spring compresses, the first latching mechanism moves from its latching position
to its retracted position.
[0011] In another example, the first latching mechanism and the second latching mechanism
comprise manually-operable cables. In a further example, the second release mechanism
includes a cable operably coupled to a plate having a slot defined therein; a pin
disposed within the slot for movement therein from a first position to a second position;
an actuator for operably controlling the upper portion between its lowered position
and its raised position, the actuator comprising a rod operably coupled to the pin;
wherein, in the lowered position, the pin is disposed at a first end of the slot and
the actuator is in a retracted position; wherein, as the cable is pulled, the pin
moves from the first end to a second end of the slot, where movement of the pin from
the first end to the second end induces the rod to extend in a longitudinal direction;
further wherein, movement of the rod in the longitudinal direction induces the upper
portion to move from its lowered position to its raised position.
[0012] In yet another example, the system includes a first scissor assembly operably coupled
between the upper portion and the lower portion; and a second scissor assembly operable
coupled between the upper portion and the lower portion, the second scissor assembly
being spaced longitudinally from the first scissor assembly; wherein, as the actuator
moves from its retracted position to an extended position, the first and second scissor
assemblies induce the movement of the upper portion from its lowered position to its
raised position.
[0013] In a further embodiment of the present disclosure, a wheelchair docking system for
being coupled to a floor includes a frame having an upper portion and a lower portion,
the upper portion being movable relative to the lower portion between a lowered position
and a raised position; a coupler mechanism configured to engage a wheelchair during
a docking operation, the coupler mechanism being positioned on the upper portion;
a first latching mechanism being movable between a retracted position and a latching
position, the first latching mechanism spaced from the coupler mechanism; a second
latching mechanism for moving the upper portion of the frame between its lowered position
and raised position; a first tether assembly comprising a first tether strap coupled
at one end to the lower portion and at an opposite end to the upper portion, the first
tether assembly positioned at a rear end of the frame; and a second tether assembly
comprising a second tether strap coupled at one end to the lower portion and at an
opposite end to the upper portion, the second tether assembly positioned at a front
end of the frame.
[0014] In an example of this embodiment, the system may include a bracket mounted to the
lower portion of the frame; and a pin coupled to the mounting bracket; wherein, the
first tether strap is coupled to the pin at the one end.
[0015] In an alternative embodiment, a wheelchair docking system for being coupled to a
track system coupled to a vehicle floor includes a frame having an upper portion and
a lower portion, the upper portion being movable relative to the lower portion between
a lowered position and a raised position; a coupler mechanism configured to engage
a wheelchair during a docking operation; a bottom panel of the lower portion of the
frame comprising a plurality of openings defined therein; a flange integrally formed
in the lower portion of the frame, the flange comprising a plurality of openings defined
therein; and an adjustable latch coupled to the lower portion via one of the plurality
of openings in the flange, the adjustable latch releasably coupled to the track system.
[0016] In a first example, the adjustable latch is adjustably coupled to one of the plurality
of openings in the flange. In a second example, the plurality of openings is equally
spaced and defined laterally in the flange to provide for a laterally adjustable coupling
between the lower portion and the track system. In a third example, the plurality
of openings in the bottom panel are equally spaced and defined laterally therein.
In a fourth example, each of the plurality of openings defined in the flange are aligned
longitudinally with at least one of the plurality of openings defined in the bottom
panel.
[0017] In a fifth example, a body of the adjustable latch with a defined opening; and a
fastener coupled to the body via the defined opening, wherein the fastener is disposed
through the one of the plurality of openings in the flange and the defined opening
in the body for coupling the adjustable latch to the lower portion. In a sixth example,
the adjustable latch comprises a tab portion, a first post and a second post, the
tab portion being slidable in a generally vertical direction to releasably couple
the adjustable latch to the track system. In a seventh example, the tab portion is
adjustable between a raised position and a lowered position, where in the lowered
position the docking system is coupled to and inhibited from longitudinal movement
relative to the track system, and in the raised position the docking system is longitudinally
moveable relative to the track system.
[0018] In an eighth example, at least one retaining pin includes a neck portion and a retaining
end, the at least one fastener coupling the bottom panel to the track system. In a
ninth example, the neck portion is disposed within one of the plurality of openings
in the bottom panel.
[0019] In another embodiment, a vehicle includes an interior cabin; a vehicle floor located
in the cabin; a track system comprising at least one track, the at least one track
including a plurality of receptacles and an elongated channel defined therein between
a first end and a second end of the at least one track; a wheelchair docking system
adjustably coupled to the track system, the wheelchair docking system comprising a
frame having an upper portion and a lower portion, a coupler mechanism configured
to engage a wheelchair during a docking operation, a bottom panel of the lower portion
comprising a plurality of openings defined therein, and a flange integrally formed
in the lower portion of the frame; and a latch adjustably coupling the wheelchair
docking system to the track system, the latch being coupled to the lower portion via
the flange; wherein, each of the plurality of receptacles are equally spaced from
an adjacent receptacle; wherein, the flange comprises a plurality of openings defined
therein such that the latch is coupled to the docking system via one of the plurality
of openings in the flange.
[0020] In one example of this embodiment, the track system is mounted directly to a top
surface of the vehicle floor. In another example, the plurality of openings in the
flange and the plurality of openings in the bottom panel are equally spaced and defined
laterally to provide for a laterally adjustable coupling between the docking system
and the track system. In yet another example, each of the plurality of openings defined
in the flange are longitudinally aligned with at least one of the plurality of openings
defined in the bottom panel.
[0021] In a further example, the latch comprises a body with an opening defined therein;
a tab portion being slidable in a generally vertical direction to releasably couple
the latch to the track system; a first post and a second post; and a fastener coupled
to the body via the defined opening, wherein the fastener is disposed through the
one of the plurality of openings in the flange and the opening in the body for coupling
the latch to the docking system. Related thereto, the tab portion is adjustable between
a raised position and a lowered position, where in the lowered position the tab portion
is disposed within a first receptacle of the plurality of receptacles of the at least
one track, and in the raised position the tab portion is released from the first receptacle
such that the docking system and latch are longitudinally moveable relative to the
track system.
[0022] In yet a further example, at least one retaining pin includes a neck portion and
a retaining end, the at least one fastener coupling the bottom panel to the track
system. Moreover, the neck portion is aligned with and disposed within one of the
plurality of openings in the bottom panel and the channel of the at least one track;
the retaining end is disposed within one of the receptacles of the plurality of receptacles.
Further, related to this embodiment, the at least one track comprises a first track
and a second track, the first track and second track being laterally spaced from one
another and coupled to the vehicle floor.
[0023] In a further embodiment of the present disclosure, a docking assembly for coupling
a wheelchair to a floor of a vehicle includes a track system comprising a first track
and a second track, the first and second tracks each including a first end, a second
end, a plurality of receptacles, and an elongated channel defined therein between
the first end and the second end; a wheelchair docking system adjustably coupled to
the track system, the wheelchair docking system comprising a frame having an upper
portion and a lower portion, a coupler mechanism configured to engage the wheelchair,
a bottom panel of the lower portion comprising a plurality of openings defined therein,
and a flange integrally formed with the lower portion of the frame; a first fastener
adjustably coupling the wheelchair docking system to the first track, the first fastener
being coupled to the frame via the flange; and a second fastener adjustably coupling
the wheelchair docking system to the second track, the second fastener being coupled
to the frame via the flange.
[0024] In one example of this embodiment, each of the first and second fasteners includes
a tee-bolt, where the tee-bolt comprises an elongated member and at least one stud
extending therefrom.
BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The above-mentioned aspects of the present disclosure and the manner of obtaining
them will become more apparent and the disclosure itself will be better understood
by reference to the following description of the embodiments of the disclosure, taken
in conjunction with the accompanying drawings, wherein:
Fig. 1 is a front view of a powered wheelchair and docking system in a passenger vehicle;
Fig. 2 is a partial exploded and perspective view of the wheelchair and docking system
of Fig. 1;
Fig. 3A is a perspective view of a wheelchair docking system and track system for
a passenger vehicle in a first configuration;
Fig. 3B is a perspective view of a wheelchair docking system and track system for
a passenger vehicle in a second configuration;
Fig. 4A is a side view of the wheelchair docking system in the first configuration
of Fig. 3A;
Fig. 4B is a side view of the wheelchair docking system in the second configuration
of Fig. 3B;
Fig. 5A is a side cross-sectional view of the wheelchair docking system in the second
configuration;
Fig. 5B is another side cross-sectional view of the wheelchair docking system in the
second configuration;
Fig. 6 is a partial bottom perspective view of the wheelchair docking system;
Fig. 7 is a bottom view of the wheelchair docking system;
Fig. 8 is another bottom view of the wheelchair docking system;
Fig. 9 is a partial perspective view of a portion of the wheelchair docking system
and track system;
Fig. 9A is a partial perspective view of a release mechanism for adjusting the wheelchair
docking system relative to the track system;
Fig. 10 is a partial exploded perspective view of the portion of the wheelchair docking
system and track system of Fig. 9A;
Fig. 11 is a diagram of a control system for controlling the docking system;
Fig. 12 is a partial exploded and perspective view of another embodiment of a wheelchair
docking system;
Fig. 13 is a top view of the wheelchair docking system of Fig. 12 with a top portion
thereof removed; and
Fig. 14 is a bottom perspective view of the wheelchair docking system of Fig. 12.
DETAILED DESCRIPTION
[0026] The embodiments of the present disclosure described below are not intended to be
exhaustive or to limit the disclosure to the precise forms disclosed in the following
detailed description. Rather, the embodiments are chosen and described so that others
skilled in the art may appreciate and understand the principles and practices of the
present disclosure.
[0027] Referring to Fig. 1 of the present disclosure, a wheelchair 100 is depicted. The
wheelchair 100 may include a frame 102 supported by one or more wheels 104. A brake
or anti-tilt/tip mechanism 106 may be located at one or more wheels 104 for slowing
down or keeping the wheels 104 from turning, if necessary. The wheelchair 100 may
be a powered wheelchair or a manually-operated wheelchair. Any type of wheelchair
100 is applicable to the present disclosure.
[0028] In Fig. 1, the wheelchair 100 is shown located in an interior of a vehicle which
has a vehicle floor 108. The vehicle floor 108 may be the original OEM vehicle floor,
or it may be a modified vehicle floor to accommodate a ramp or wheelchair lift assembly.
In any event, the wheelchair 100 may be maneuvered such that the physically limited
individual operating or positioned in the wheelchair may be positioned in any location
of the vehicle, including at the driver's position of the vehicle.
[0029] In conventional vehicle arrangements, a physically limited individual may drive the
vehicle so long as the wheelchair is properly latched or connected to the vehicle
floor in at least one or two manners. Most conventional wheelchairs are attached to
the vehicle via an attendant using four securement belts at each corner of the wheelchair.
If the wheelchair user is independent and intends to drive or otherwise operate the
vehicle, then most conventional wheelchairs require an aftermarket, conventional wheelchair
docking system in which a bolt or other bolt-like feature connected to a bottom of
the chair and protruding downward toward the floor. The bolt may then be received
by a conventional docking system which is bolted through to the floor. The conventional
docking system has a mechanism which receives and latches to the bolt, thereby holding
the wheelchair to the vehicle floor. Additional mechanisms may be used to further
support and fasten the wheelchair to the vehicle floor.
[0030] The conventional wheelchair, however, presents many problems. First, the bolt protrudes
downwardly from the wheelchair and leaves very little clearance between the floor
and the bolt. Thus, the bolt can often contact objects and the like that the wheelchair
would otherwise clear. When the bolt does contact an object, it can cause the wheelchair
to tip forward or rearward, or become obstructed with. Alternatively, the object may
be dragged by the bolt until it can be cleared from underneath the wheelchair. In
either case, it is disadvantageous to have a bolt protruding downwardly from the wheelchair
and reducing the clearance between the wheelchair and floor.
[0031] In the present disclosure, an improved docking system 112 allows for the wheelchair
100 to have greater clearance between it and the floor 108. Moreover, the docking
system 112 includes a first latching mechanism for coupling to a coupling device 110
on the wheelchair 100, and a second latching mechanism for coupling the wheelchair
100 to the vehicle floor 108 and preventing it from tilting to the left or right as
the vehicle makes a turn. Thus, the present disclosure provides a better connection
between the wheelchair 100 and the vehicle floor 108, and one which is safer over
conventional docking systems. Further, the present disclosure provides a track system
114 which allows the docking system 112 to be adjusted longitudinally along the vehicle
floor 108 for different sized passengers.
[0032] In Fig. 2, for example, the bottom portion of the wheelchair 100 is better shown.
Here, the wheelchair 100 has a bottom surface 116 to which the coupling device 110
is connected via one or more fasteners. The coupling device 110 may be a substantially
U-shaped bracket 200 formed by a first leg 202 and a second leg 204. The first and
second legs are spaced from one another to define an opening 206 therebetween. In
Fig. 2, the opening 206 is oriented towards a front end 208 of the wheelchair 100
rather than a rear end 210.
[0033] The opening 206 in the bracket 200 is configured to engage with the docking system
112. The docking system 112 may include a frame 216 and a coupler mechanism 218 as
shown in Fig. 2. The coupler mechanism 218 may comprise a neck portion 402 (Fig. 4)
that extends upwardly from the frame 216 and terminates at a disk-shaped top portion
222. As the wheelchair 100 is moved into engagement with the docking system 112, the
bracket 200 comes into contact with the coupler mechanism 218. In particular, the
coupler mechanism 218 is received within the opening 206 of the coupling device 110,
and the first leg 202 and second leg 204 are received within a space 400 (Fig. 4A-B)
defined between the frame 216 of the docking system 112 and the disk-shaped top portion
222 of the coupler mechanism 218. In the engaged position, the first leg 202 and second
leg 204 may be in close proximity or contact with the neck portion 402 of the coupler
mechanism 218.
[0034] To maintain the wheelchair 100 engaged with the docking system 112, the docking system
112 may further include a retractable locking pin 224. The locking pin 224 may have
an angled surface which comes into contact with a first surface 226 of the bracket
200 causing the locking pin 224 to be pushed downwardly into an opening. Once the
bracket 200 clears the locking pin 224, a spring 512 (Fig. 5) may bias the locking
pin 224 to its upward position of Fig. 2. In the upward position, the bracket 200
is retained between the coupler mechanism 218 and the locking pin 224. This connection
between the wheelchair 100 and docking system 112 may establish a first of at least
two latching mechanisms of the present disclosure.
[0035] The aforementioned track system 114 of the present disclosure is also shown in Fig.
2. Here, the track system 114 may include a first track 212 and a second track 214.
The docking system 112 may be movably coupled to the first and second tracks, which
is shown in greater detail in Figs. 9 and 10. In these illustrated embodiments, a
quick-connect track fitting such as an aluminum track fitting may be used for engaging
with the tracks. Alternatively, a fastener such as a tee-bolt may be used for engaging
the tracks.
[0036] The first and second tracks 212, 214 may be installed at the factory rather than
as an after-market part. In doing so, the tracks can be strategically positioned and
mounted to the vehicle floor without requiring any drilling through the vehicle floor
during installation. As vehicle complexity continues to evolve, the area below the
vehicle floor continues to be filled with electrical modules and harnesses, the fuel
system, emissions control equipment, and batteries in the case of electric vehicles.
As a result, any through-floor drilling runs the risk of damaging any of the systems
located underneath the floor. Moreover, any new holes drilled through the vehicle
floor can invite moisture and other contaminants into the cabin of the vehicle which
can be undesirable for many reasons.
[0037] Further, as more electric vehicles become commercially available, battery packs and
other electronic equipment may be located underneath the vehicle floor. Any through-floor
drilling can damage or even destroy the batter pack or other equipment and create
a safety hazard at the same time. Thus, for at least these reasons, it is undesirable
to drill through the vehicle floor after the vehicle leaves the factory in order to
install the tracks.
[0038] In the present disclosure, a method of installing the tracks and docking system in
a vehicle includes mounting the tracks to the vehicle floor without requiring any
through-floor drilling and/or bolting. The tracks may be mounted in any known way
including welding, adhering or fastening. In some instances, the floor may be prepared
with holes for assembling the track thereto before any control systems, electrical
equipment, fuel lines, exhaust lines, etc. is mounted underneath the floor. In other
instances, the tracks are mounting entirely within the cabin and directly to the vehicle
floor surface.
[0039] 1
st row, front (drivers & passengers), 2
nd row center locations, 3
rd row (in the case of Rear Entry or bus) installation
[0040] In Fig. 9, for example, a lower portion 302 of the frame 216 of the docking system
112 is shown. Here, a flange 910 may protrude rearwardly from the lower portion 302
as shown. The docking system 112 spans a gap defined between the first track 212 and
second track 214. In some instances, the gap therebetween may be different or adjustable
depending upon the vehicle. Thus, to accommodate different gaps between the first
and second tracks, the flange 910 may include a plurality of openings 1004 (Fig. 10)
to adjustably couple the docking system 112 to the track system 114.
[0041] The docking system 112 may include a bottom plate or panel 1006 which define a plurality
of openings 1008 therein as well. The plurality of openings 1008 are also to accommodate
different gaps between the first and second tracks.
[0042] Each of the tracks may include a body that has a bottom portion 1020 and a top portion
1022. The top portion 1022 may have an outer lip that extends outwardly on both sides,
as shown in Fig. 10. Moreover, each track defines a plurality of receptacles 1000
configured to receive the docking system 112. In Fig. 9, for example, the plurality
of receptacles 1000 may include a first receptacle 902, a second receptacle 904, a
third receptacle 906, a fourth receptacle 908, and so forth. Each of the plurality
of receptacles 1000 is equally spaced from an adjacent receptacle along each longitudinal
track. Further, a narrower channel 1024 connects each adjacent receptacle to another
receptacle, as shown in Fig. 10. The channel 1024 may extend from a first end of each
track 212, 214 to an opposite end thereof.
[0043] The docking system 112 may be movably coupled to the track system 114 via an adjustable
latch 900. In Figs. 9 and 9A, the adjustable latch 900 may include a body 918 that
defines an opening 1002 for receiving a fastener 916. In Fig. 10, the fastener 916
may fit through one of the plurality of openings 1004 in the flange 910 and further
coupled to the body 918. For instance, the body 918 may include internal threads to
which the fastener 916 may be coupled. The fastener 916 may couple to the body 918
in any conventional manner.
[0044] The adjustable latch 900 may include a tab portion 912 which may be slidable in an
upward direction 914 as shown in Fig. 9A. As the tab portion 912 is moved in the upward
direction 914, it may be released from being disposed in one of the plurality of receptacles
1000. As a result, the adjustable latch 900 can be used to move the docking system
112 in a longitudinal direction 1026 relative to the track system 114. Moreover, as
the docking system 112 is moved, a first post 1016 and a second post 1018 on each
adjustable latch 900 may slide through the narrow channel 1024 until the tab 912 is
repositioned in a different receptacle.
[0045] The adjustable latch 900 may be located on the rear of the docking system 112. At
the front of the docking system, a pair of retaining pins may be engaged with the
first track 212 and second track 214. Each retaining pin may include a neck portion
1014 and a retaining end 1012. A nut 1010 or other fastener may be threadedly coupled
to the neck portion 1014 of each retaining pin. Thus, the retaining pin is coupled
to the bottom panel 1006 of the docking system. The retaining pin, unlike the adjustable
latch 900, remains coupled to the docking system and may slide in the longitudinal
direction 1026 through the channel 1024 as the docking system 112 is adjusted. Specifically,
the neck portion is aligned within the channel 1024 whereas the retaining end is disposed
within one the receptacles. The retaining end is permitted to move within the channel
1024 when the docking system 112 is adjusted longitudinally relative to the first
and second tracks.
[0046] The openings 1004 in the flange 910 and the openings 1008 in the bottom plate 1006
allow for the docking system 112 to be adjusted side-to-side or perpendicular to the
longitudinal direction 1026. As shown in Fig. 10, the adjustable latches 900 may be
positioned in any one of three of the openings 1004 in the flange 910 and the necks
1014 may be positioned in any one of three openings in the bottom plate 1006. While
in the illustrated embodiment there are three openings 1004, 1008, in other embodiments
there may be two or more openings, i.e., two openings, four openings, five openings,
six openings, etc. The side-to-side or lateral adjustability, as well as the fore-and-aft
adjustability, can allow a wheelchaired passenger to use the docking system as either
a driver or passenger.
[0047] Referring now to Fig. 3A, the docking system 112 is shown coupled to the track system
114. The docking system 112 may include a top portion 300 and a bottom portion 302.
The bottom portion 302 has been described with respect to Figs. 9-10 above and include
the bottom panel 1006 and flange 910. The top portion 300 forms part of the frame
216 to which the coupler mechanism 218 and locking pin 224 are connected. In Fig.
3A, the docking system 112 is shown in its lowered position 308, whereas in Fig. 3B
the docking system 112 is in its raised position 338. The docking system 112 is in
its raised position 338 when it is not engaged with the wheelchair 100.
[0048] The docking system 112 includes a switch 304 for detecting the presence of the bracket
200 and wheelchair 100. A wire or other means may electrically couple the switch 304
to a controller 1102 (Fig. 11) for communicating with the driver or physically limited
individual that the bracket 200 is coupled to the docking system 112. For instance,
the controller 1102 or a control system 1100 may receive a signal from the switch
304 and display a signal or illuminate a light on a dashboard 1112 of the vehicle
indicating the connection.
[0049] A second wire or cable 306 is shown in Fig. 3A. This wire or cable 306 may be coupled
to a first actuator 334 as shown in Fig. 3B. A control button 1108 located in the
vehicle may be electrically coupled to the actuator 334 via the wire or cable 306.
Alternatively, the controller 1102 or control system 1100 may automatically communicate
with the actuator 334 to trigger it between an extended and retracted position. The
actuator 334 forms part of the second latching mechanism of the present disclosure.
[0050] When the sensor 304 detects that the wheelchair is engaged by the coupler mechanism
218 and locking pin 224, it may send a signal to a controller 1102 to automatically
trigger the actuator 334. Alternatively, the signal may be displayed on a dashboard
1112 or display screen 1110 in the cab of the vehicle, and the operator may manually
trigger the actuator 334. As the actuator 334 extends and retracts, the top portion
300 may move upwards or downwards relative to the lower or bottom portion 302. In
other words, the actuator 334 may control the movement of the docking system 112 between
its raised position 338 of Fig. 3B and its lowered position 308 of Fig. 3A.
[0051] The manner in which the docking system 112 moves between its raised and lowered positions
will now be described. The docking system 112 may include a front scissor assembly
310 on a front end thereof and a rear scissor assembly 312 on a rear side thereof.
Moreover, there may be a front scissor assembly 310 and rear scissor assembly 312
on both the left and right sides of the docking system 112. The front scissor assembly
310 and rear scissor assembly 312 may include a pair of legs. For example, each assembly
may include a first leg 314 and a second leg 316. The first leg 314 may be disposed
outwardly of the second leg 316. Moreover, the first leg 314 may be coupled to an
outside location of the top portion 300 of the docking system 112 and an inside location
of the bottom portion 302. The second leg 316 may be coupled at an inside location
of the top and bottom portions of the docking system 112, as shown in Fig. 3B.
[0052] The first leg 314 and second leg 316 may be coupled at an approximate midpoint along
the length of each leg. In Fig. 3B, for example, the first leg 314 and second leg
316 may be pivotally coupled via a connection pin 330 or fastener. The first leg 314
and second leg 316 can therefore pivot relative to one another about an axis defined
by the connection pin 330. This is the only coupling point between the first and second
legs.
[0053] The first leg 314 may be fixedly coupled at one end thereof to the bottom portion
302 of the docking system 112 via a fastener 318. Thus, the first leg 314 cannot move
laterally relative to the bottom portion 302 at this location. At an opposite end,
the first leg 314 may be movably coupled to the top portion 300 via a pin 326. Here,
the pin 326 can move within a longitudinal slot 328 defined in the top portion 300
of the docking system 112. Thus, as the actuator 334 extends and retracts, the first
leg 314 remains fixed at one end to the bottom portion 302 via the fastener 318 but
moves longitudinally in the slot 328 at an opposite end thereof.
[0054] Similarly, the second leg 316 includes two ends. At a first end, the second leg 316
is fixedly coupled to the top portion 300 via a fastener 326. At an opposite second
end, the second leg 316 is movably coupled to the bottom portion 302 via a pin 320.
The pin 320 is able to move longitudinally within a longitudinal slot 322 defined
in the bottom portion 302.
[0055] The above-described first and second legs of the front scissor assembly 310 is equally
applicable to the front scissor assembly 310 on the opposite side of the docking system
112 as shown in Fig. 3B. Moreover, the rear scissor assembly 312 functions in the
same manner. Thus, for sake of brevity, the manner in which the rear scissor assembly
312 operates will not be described.
[0056] The rear scissor assembly 312 is also coupled to a cross member 332 as shown in Fig.
3B. In particular, the cross member 332 extends the width of the docking system 112
and is coupled to the pins 320 and second leg 316. Moreover, the cross member 332
may be coupled to the actuator 334 via a connector 700 (Fig. 7). In Fig. 5A, for example,
the connector 700 is shown as a bolt 504 that couples a rod 502 of the actuator 334
to the cross member 332. As the actuator 334 extends and retracts, the cross member
332 may move longitudinally. Since the cross member 332 is coupled to the second legs
316, movement of the cross member 332 in a longitudinal direction 500 (Fig. 5) via
the actuator 334 may in turn induce the second legs 316 to move longitudinally within
the longitudinal slots 322.
[0057] The second leg 316 of the rear scissor assembly 312 may be coupled to the second
leg 316 of the front scissor assembly 310 via a longitudinal member 336. Thus, longitudinal
movement of the second leg 316 of the rear scissor assembly 312 is in turn translated
into longitudinal movement in the same direction of the second leg 316 of the front
scissor assembly 310. As a result, the docking system 112 is capable of moving between
its raised position 338 and lowered position 308 via actuation of the first actuator
334.
[0058] The bottom portion 302 of the docking system 112 may include a first recess 340 and
a second recess 342 for receiving the connection pin 330 of the front and rear scissor
assemblies in the lowered position 308.
[0059] Once the docking system 112 is in its lowered position 308, it is better able to
maintain the wheelchair 100 from rocking or tilting as the vehicle is making a turn.
The locking pin 224 provides a first latching mechanism to connect the wheelchair
100 to the docking system 112, and the actuation of the docking system 112 to its
lowered position functions as a second latching mechanism for holding the wheelchair
100 more securely during vehicle operation.
[0060] While the first and second latching mechanisms are able to securely couple the wheelchair
100 to the vehicle floor 108, there may be an instance where it is desirable to manually
release the latching mechanisms. For example, if the vehicle is involved in an accident
or there is an emergency, it may be necessary to unlatch the chair from the floor.
Alternatively, if the vehicle loses electrical power, it may be necessary to manually
release the wheelchair from the docking system 112. To do so, there are two release
systems in place for this.
[0061] In Figs. 5A, 5B, and 6, for example, a first of the release systems is depicted.
Here, a first release mechanism 506 is shown for releasing the locking pin 224 and
allowing the wheelchair to move away from the docking system 112. Before describing
this release mechanism 506, however, it is necessary to point out that in Fig. 6 that
a second actuator 600 is provided for moving the locking pin 224 between its upward
and downward positions. The second actuator 600 may be controlled by a controller
1102 such as the vehicle controller 1114 or any other controller. In one example,
a controller 1102 for only controlling the docking system 112 may be provided. In
this instance, the controller 1102 may be in communication with the vehicle controller
1114 and/or any other controller of the vehicle (e.g., transmission controller 1118,
engine controller 1116, etc.) over a communication link such as CAN, J-1939, etc.
[0062] The second actuator 600 may be coupled to a plate 604 as shown in Fig. 6. As the
actuator 600 is actuated between an extended and retracted position, it induces movement
of the plate 604. As the plate 604 is moved, it is coupled to the locking pin 224
via a pin 602 to move it in a downward position to compress a spring 512. The actuator
600 may provide sufficient force to the plate 604 to compress the spring 512 and move
the locking pin to a retracted position such as shown in Fig. 5A. As the actuator
600 returns to a normal position, the spring 512 may bias the locking pin 224 to its
upright position of Fig. 5B. Thus, control of the second actuator 600 allows for releasing
the locking pin 224 when desired. Moreover, the locking pin 224 and pin 602 may move
in a direction indicated by arrow 610 in Fig. 6.
[0063] In some instances, a button or other control 1108 may be in the vehicle to allow
the wheelchaired passenger or other individual to control the actuator 600. The button
or control 1108 may be manually triggered, which sends a signal to a controller 1102
which in turn commands the actuator 600 to actuate between its extended and retracted
positions. As described above, an alternative embodiment would be for the controller
1102 to automatically detect a condition to release the locking pin 224. The controller
1102 may include logic, software, or an algorithm to operate from for actuating the
first and second actuators of the present disclosure.
[0064] The first release mechanism 506 may include a cable or cord 608 of which a user may
pull to retract the locking pin 224 from its latched position of Fig. 5B. The cable
or cord 608 may be coupled to a cable 508 as shown in Fig. 5A, and one end of the
cable 508 may be coupled to the locking pin 224 via a set screw 514 or other fastener.
Thus, movement of the cable 508 induces the locking pin 224 to move downward and compress
the spring 512.
[0065] The cable 508 passes through a ferrule 516 as shown in Fig. 5B. A bracket 510 is
further coupled to the cable 508. The bracket 510 may be similar to or the same as
the plate 604. A ball 606 or other feature may be coupled to the cord 608 and rests
against the plate 604 as shown in Fig. 6. As a user pulls on the cord 608, it in turn
pulls the cable 508 and locking pin 224 downwardly until the locking pin 224 is in
the position shown in Fig. 5A.
[0066] A sensor 518 may be provided for detecting a position of the locking pin 224 and
communicate this to a controller 1102 or display the position on a dashboard 1112
or other display 1110 in the vehicle. Thus, the operator and/or wheel chaired passenger
will know the position of the locking pin 224 based on the detection made by the sensor
518.
[0067] The release mechanism 506 is useful to release the locking pin 224 and allow the
wheelchair to be disengaged from the docking system 112. In Figs. 7 and 8, a second
release mechanism 706 is shown for raising the docking system 112 from its lowered
position 308 to its raised position 338. Here, the second release mechanism 706 may
include a safety strap or cable 220 that is coupled to a plate 708 via a fastener
710.
[0068] A spring 344 may be coupled between the plate 708 and the bottom portion 302 of the
docking system 112. In particular, the spring 344 may include a first hook end 702
coupled to the bottom portion 302 and a second hook end 704 coupled to the plate 708.
[0069] The plate 708 may further be coupled to the docking system 112 via a first connector
714. In addition, the plate 708 may include an L-shaped slot 716 defined therein.
A pin 712 may slide or otherwise move within the slot 716. The pin 712 may be coupled
to a rod 806 of the first actuator 334 as shown in Figs. 7 and 8. As the pin 712 moves
within the slot 716, the rod 806 may extend or retract.
[0070] For example, in Fig. 7, the docking system 112 may be in its lowered position 308.
The spring 344 is in its free, extended or uncompressed position 718. The pin 712
is located at a first end of the slot 716 and the actuator rod 806 is in its retracted
position. In Fig. 8, however, the strap or cable 220 may be pulled to achieve a release
configuration 800 thereby causing the pin 712 to move within the slot 716 to an opposite
end thereof. As it does, the spring 344 is extended along direction 802. Moreover,
as the pin 712 moves to the opposite end of the slot 716, the pin 712 induces the
rod 806 to extend along direction 804 in Fig. 8. In doing so, the first and second
scissor assemblies may raise the docking system 112 an amount equivalent to the length
of the slot to relieve down pressure. Thus, in one example, the second release mechanism
706 is capable of transferring the docking system 112 from its lowered position 308
to its raised position 338. Stated another way, a clamping force on the docking system
112 is in effect relieved. In combination with the first release mechanism 506, the
wheelchair 100 may be manually disengaged and released from the docking system 112
as necessary.
[0071] Referring to Fig. 11, which has been intermittently alluded to in the above description,
a control system 1100 for controlling the docking system 112 and the interaction between
the docking system 112 and the wheelchair 100 is provided. The control system 1100
may include a controller 1102 which includes a memory unit and processor. The memory
is capable of storing logic, algorithms, software, etc. for performing one or more
tasks. The memory may further store information, collect data, and receive information
from other controllers such as a vehicle controller 1114, engine controller 1116,
and transmission controller 1118. The processor or processing unit may be capable
of executing the logic, algorithms, software, etc.
[0072] In one embodiment, the controller 1102 is a stand-alone controller for controlling
the docking system 112. In another embodiment, the controller 1102 may be the vehicle
controller 1114, the engine controller 1116, the transmission controller 1118, or
any other controller found on a vehicle. Moreover, the controller 1102 may be remotely
located from the vehicle and communicate with the docking system over a wireless communication
network such as Wi-Fi.
[0073] The controller 1102 may be in communication with a user control 1108 which may be
located in the vehicle. Alternatively, the user control 1108 may be remote from the
vehicle. In any event, a user such as the wheelchaired passenger or vehicle operator
may send instructions to the controller 1102 by actuating the user control 1108.
[0074] In turn, the controller 1102 may communicate with the user by displaying a signal,
data, information, instructions, etc. via a display 1110 or dashboard 1112. The display
1110 or dashboard 1112 may be located in the vehicle. The display 1110 may be a computer
display. The signal may be communicated by illuminating a light in the vehicle to
alert the user that the docking station 112 is engaged with the wheelchair 110 or
vice versa. Other types of signals are also possible.
[0075] The controller 1102 may be in communication with the first actuator 334 and second
actuator 600 of the docking system 112. In this manner, the controller 1102 may command
either or both actuators to extend or retract. This may be based on a user command
via the user control 1108, or it may be part of the control logic, algorithms, software,
etc. executed by the processor of the controller 1102.
[0076] The controller 1102 may receive signals from one or more sensors. For example, the
sensor 518 may detect the position of the locking pin 224 and communicate this position
to the controller 1102. A second sensor 1104 may detect a position of the first actuator
334 and/or second actuator 600. For example, the controller 1102 may command the actuator
334 to extend by a desired amount. The second sensor 1104 may detect how much the
actuator 334 has extended and communicate the same to the controller 1102. In this
way, the controller 1102 receives feedback from the sensor 1104 and can further adjust
its commands to either actuator.
[0077] The control system 1100 may include a third sensor 1106 which may be positioned on
the docking system 112 and is able to detect an oncoming wheelchair 100. The third
sensor 1106 may be a proximity sensor, Hall Effect sensor, or any other type of sensor.
The third sensor 1106 may detect a height or clearance between a bracket 200 on the
approaching wheelchair 100 and communicate the same to the controller 1102. In turn,
the controller 1102 may actuate the first actuator to cause the docking system 112
to move upwards or downwards based on the detected clearance by the third sensor 1106.
In doing so, the second sensor 1104 can detect how far and in what direction the actuator
334 moves in order to determine if the actuator 334 responded correctly based on the
instruction from the controller 1102. A fourth sensor (not shown) may detect the height
of the coupler mechanism 218 relative to the vehicle floor 108 and communicate the
same to the controller 1102. Thus, the controller 1102 is able to receive signals
indicative of an approaching wheelchair 100, the desired height of the docking system
112 for receiving the wheelchair 100, the actual height of the docking system 112,
and the responsiveness of the first actuator 334 for adjusting the height of the docking
system 112.
[0078] Additional control logic or algorithms may be performed by the control system 1100
for docking the wheelchair 100 to the docking system 112. One or more controllers
may execute the control logic or algorithms. In a further embodiment, the wheelchair
may include a controller or transmitter for communicating with the control system
1100. In this manner, the transmitter or controller on the wheelchair may alert the
controller 1102 or third sensor 1106 of its approach.
[0079] Referring now to Figs. 12 and 13, a different embodiment of a wheelchair docking
system 1200 is illustrated. For sake of brevity, features in the embodiment of Figs.
12 and 13 that remain unchanged from the embodiments in Figs. 1-11 include the same
reference number. For this reason, only the features that have changed between embodiments
will be addressed.
[0080] In Fig. 12, the wheelchair docking system 1200 may include a lower protective shroud
1202 and an upper protective shroud 1204. The lower protective shroud 1202 may be
formed of a plastic material formed by any known process such as injection molding.
The upper protective shroud 1204 may be formed of sheet metal or similar material.
The pair of shrouds provide additional safety and aesthetic benefits to the wheelchair
docking system 1200.
[0081] The docking system 1200 may also include a plurality of tether assemblies for increased
structural integrity and improvement. For instance, a rear tether assembly 1206 is
depicted in Figs. 12 and 13 having a rear load tether strap 1208. The rear load tether
strap 1208 may be coupled at one end to a pin 1302 which is affixed to a mounting
bracket 1300. The mounting bracket 1300 may be welded or otherwise coupled to the
lower portion 302 of the system 1200. In at least one embodiment, the pin 1302 may
pivot or rotate about an axis within the bracket 1300.
[0082] The rear load tether strap 1208 may be coupled at its opposite end to the top portion
300 of the system. The rear tether assembly 1206 may be approximately centrally located
as shown in Figs. 12 and 13. Moreover, the top portion 300 may be a cast material
for improved structural integrity.
[0083] The wheelchair docking system 1200 may also include a pair of front tether assemblies.
A first front tether assembly 1210 may be located at a first front corner and a second
front tether assembly 1212 may be located at a second front corner. Each tether assembly
may include a tether strap similar to that of the rear tether assembly 1206. For instance,
the first front tether assembly 1210 may include a tether strap 1304 and the second
front tether assembly 1212 may include a tether strap 1306. Each tether strap 1304,
1306 may be coupled at one end to the lower portion 302 and at the opposite end to
the top portion 302.
[0084] The docking system 1200 may also include an upper and lower gussets. The lower gusset
1308 is located at the front scissor assembly 310. The upper gusset, which is not
shown in Figs. 12 and 13, is also located at the front scissor assembly 310. Each
gusset may be welded to the system. In particular, the lower gusset 1308 may be welded
to the lower portion 302, whereas the upper gusset may be welded to the top portion
300.
[0085] As also shown in Fig. 13, a plurality of fasteners or stud bolts may be used to further
couple the wheelchair docking system 1200 to the tracks 212, 214. As shown, a pair
of stud or tee-bolts 1310 is shown at approximately each front corner of the system
1200 to add further structural integrity to the overall system.
[0086] Moreover, rather than the adjustable latches of Fig. 9, a different or alternative
design may be implemented for movably coupling the docking system 112 to the track
system 114. In Figs. 13 and 14, for example, a tee-bolt 1312 may be used. The tee-bolt
1312 may include an elongated member 1400 configured to slide or move within the channel
1024 of each track. The elongated member 1400 may include a narrow raised portion
1318 that is also capable of moving within the narrow channel 1024. Further, the tee-bolt
1312 may comprise one or more studs 1320 extending from the elongated portion 1400.
In Fig. 13, each tee-bolt 1321 includes two studs 1318 extending in a substantially
perpendicular direction from the elongated member 1400.
[0087] A plurality of fasteners may couple to the studs for securing the tee-bolt to the
docking station 112. For example, a first bolt 1314 and a second bolt 1316 are shown
in Fig. 13 for each tee-bolt 1312. These bolts or fasteners rigidly couple each stud
of the respective tee-bolt 1312 to the docking system 112 to allow the docking system
112 to move smoothly within each track.
[0088] As shown, the elongated members 1400 may include a substantially flat bottom surface
to allow it to smoothly slide or move within the tracks. The bottom surface of each
of the elongated members 1400 may be approximately parallel to a bottom surface of
the lower portion 302 of the frame 216, as shown in Fig. 14. This can help ensure
smooth movement of the docking system 112 along the tracks.
[0089] While exemplary embodiments incorporating the principles of the present disclosure
have been disclosed herein, the present disclosure is not limited to the disclosed
embodiments. Instead, this application is intended to cover any variations, uses,
or adaptations of the disclosure using its general principles. Further, this application
is intended to cover such departures from the present disclosure as come within known
or customary practice in the art to which this disclosure pertains and which fall
within the limits of the appended claims.
[0090] Certain aspects and/or embodiments of the present invention are defined in the numbered
clauses below.
Clause 1. A wheelchair docking system for being coupled to a track system coupled
to a vehicle floor, comprising:
a frame having an upper portion and a lower portion, the upper portion being movable
relative to the lower portion between a lowered position and a raised position;
a coupler mechanism configured to engage a wheelchair during a docking operation;
a bottom panel of the lower portion of the frame comprising a plurality of openings
defined therein;
a flange integrally formed in the lower portion of the frame, the flange comprising
a plurality of openings defined therein; and
an adjustable latch coupled to the lower portion via one of the plurality of openings
in the flange, the adjustable latch releasably coupled to the track system.
Clause 2. The docking system of clause 1, wherein the adjustable latch is adjustably
coupled to one of the plurality of openings in the flange.
Clause 3. The docking system of clause 2, wherein the plurality of openings is equally
spaced and defined laterally in the flange to provide for a laterally adjustable coupling
between the lower portion and the track system.
Clause 4. The docking system of clause 3, wherein the plurality of openings in the
bottom panel is equally spaced and defined laterally therein.
Clause 5. The docking system of clause 4, wherein each of the plurality of openings
defined in the flange is aligned longitudinally with at least one of the plurality
of openings defined in the bottom panel.
Clause 6. The docking system of any preceding clause, further comprising:
a body of the adjustable latch with a defined opening; and
a fastener coupled to the body via the defined opening, wherein the fastener is disposed
through the one of the plurality of openings in the flange and the defined opening
in the body for coupling the adjustable latch to the lower portion.
Clause 7. The docking system of any preceding clause, wherein the adjustable latch
comprises a tab portion, a first post and a second post, the tab portion being slidable
in a generally vertical direction to releasably couple the adjustable latch to the
track system.
Clause 8. The docking system of clause 7, wherein the tab portion is adjustable between
a raised position and a lowered position, where in the lowered position the docking
system is coupled to and inhibited from longitudinal movement relative to the track
system, and in the raised position the docking system is longitudinally moveable relative
to the track system.
Clause 9. The docking system of any preceding clause, further comprising at least
one retaining pin comprising a neck portion and a retaining end, the at least one
retaining pin coupling the bottom panel to the track system.
Clause 10. The docking system of clause 9, wherein the neck portion is disposed within
one of the plurality of openings in the bottom panel.
Clause 11. A vehicle, comprising:
an interior cabin;
a vehicle floor located in the cabin;
a track system comprising at least one track, the at least one track including a plurality
of receptacles and an elongated channel defined therein between a first end and a
second end of the at least one track;
a wheelchair docking system adjustably coupled to the track system, the wheelchair
docking system comprising a frame having an upper portion and a lower portion, a coupler
mechanism configured to engage a wheelchair during a docking operation, a bottom panel
of the lower portion comprising a plurality of openings defined therein, and a flange
integrally formed in the lower portion of the frame; and
a latch adjustably coupling the wheelchair docking system to the track system, the
latch being coupled to the lower portion via the flange;
wherein, each of the plurality of receptacles are equally spaced from an adjacent
receptacle;
wherein, the flange comprises a plurality of openings defined therein such that the
latch is coupled to the docking system via one of the plurality of openings in the
flange.
Clause 12. The vehicle of clause 11, wherein the track system is mounted directly
to a top surface of the vehicle floor.
Clause 13. The vehicle of clause 11 or 12, wherein the plurality of openings in the
flange and the plurality of openings in the bottom panel are equally spaced and defined
laterally to provide for a laterally adjustable coupling between the docking system
and the track system. Clause 14. The vehicle of clause 13, wherein each of the plurality
of openings defined in the flange are longitudinally aligned with at least one of
the plurality of openings defined in the bottom panel.
Clause 15. The vehicle of any of clauses 11 to 14, wherein the latch comprises:
a body with an opening defined therein;
a tab portion being slidable in a generally vertical direction to releasably couple
the latch to the track system;
a first post and a second post; and
a fastener coupled to the body via the defined opening, wherein the fastener is disposed
through the one of the plurality of openings in the flange and the opening in the
body for coupling the latch to the docking system.