Device for assisting disabled and elderly persons
This invention relates to devices for assisting persons, particularly
disabled and elderly persons to move from a sitting position on a support to a
sitting position on another adjacent support.
The invention has been devised primarily to overcome or reduce the
difficulties experienced by disabled and elderly persons in moving between a
seat in a motorcar and wheelchair. However, there is no limitation in this
regard as the invention is broadly applicable to the movement of persons
between any combinations of support including domestic chairs, beds, motorcar
seats and wheelchairs.
Various devices have previously been proposed for this purpose with
bevelled or slanting edges and having a low coefficient of friction, such boards
being made of wood or plastics. There are some boards selectively profiled for
assisting persons to transfer between wheelchairs and car seats, however these
boards, having only a single curve, do not always enable the board to fit easily
around door pillars of cars and wheels and armrest structures of wheelchairs,
and as such are not always practical to erect, nor easy to use.
An object of the present invention is to provide a new or improved
device for assisting persons to move from a sitting position on a support to a
sitting position on another, adjacent support.
A particular aim of the invention is to provide a device for assisting
persons transferring from a motorcar to a wheelchair, and from a wheelchair to
a motorcar.
A further particular aim is to provide a device for this purpose which can
be conveniently stowed on a wheelchair and is convenient to carry by hand.
According to the invention there is provided a device for assisting a
person to transfer from a sitting position on a first support to a sitting position
on an adjacent support, said device comprising at least two panels, connected
together by a connection means for movement relative to one another, at least
one of said panels arranged to co operate with the support upon which a person
is sitting and at least one other panel arranged to co operate with an adjacent
support to which a person is to be transferred, said panels providing a bridging
surface between the two supports and allowing transferral of a person
therebetween without necessitating standing.
Preferably, the connection means is not located at, or does not
pass through a central point of the device when the device is erected between
said supports.
Preferably, the panels are connected by hinge means.
Preferably, the device comprises a central panel and two side
panels.
Preferably, a portion near the free ends of each of the side panels
is angled downwards in relation to an upper surface of the panels when erected
between two supports, said angled portions assisting a secure co operation with
said supports.
Preferably, one panel hinged to another has a protrusion extending over
the hinge means.
A portion of the upper surface of the panels either side of the hinge
means along which a person is transferred is inclined to form a recess for
receiving the protrusion, the protrusion forming a flush surface with the upper
surface of the panels when the device is in the erected position.
Alternatively, the panels have a level or substantially level upper surface
and a recess for receiving the protrusion.
The side panels maybe unfoldable into an erected position, ready for
positioning between two support structures. In this position the panels are in a
co planar or substantially co planar arrangement. The panels provide a rigid
surface which is substantially smooth.
Preferably, a smooth surface across the hinge means is achieved by an
abutment of the protrusion of one panel with the other panel.
In a further arrangement of the invention, the device preferably
comprises at least one latch mechanism. Preferably, the at least one latch
mechanism comprises a release means located in the transfer surface of at least
one of the panels.
The latch mechanism is embedded in the transfer surface of at least one
panel and protrudes over the hinge joint. When the panels are unfolded ready
for use a pawl of the latch mechanism locates into a correspondingly located
notch on an adjacent panel. The latch mechanisms therefore ensure that the
panels either side of a hinge joint are held close together to create a smooth
transfer surface, thus avoiding the need for a separate cover, or protrusion over
the hinge joint.
Preferably, the three panels of the device are movable relative to one
another between an erected position for use of the device and a collapsed
position for stowage of the device.
Preferably, one or more of the panels has at least one aperture to enable
the device to be easily carried. More preferably, the at least one aperture is
located on the central panel.
Preferably, the configuration of the device in the erected position is such
that it assists the arranging of the device between two supports around
unmovable obstacles such as a door pillar of a vehicle or armrest of a wheel
chair which may otherwise hinder the co operation of the device with each of
the supports.
More preferably, the device in the erected position is provided with one
or more location sections to assist arrangement between the two supports.
The invention will now be described, by way of example, with reference
to the accompanying drawings in which: -
Figure 1, which includes figures Ia and Ib show two perspective views
of the device embodying the invention in the erected position,
Figure 2 shows a perspective view of the device embodying the
invention in the position for stowage,
Figure 3 is a cross section view of the hinge means used for connecting
the panels, and
Figures 4a, 4b and 4c show an alternative arrangement of the connection
means across the hinge joints of the device, and
Figure 5 shows a plan view of the device erected between a wheel chair
and motor car seat ready for use to transfer a person.
Figures 1 to 5 show a device according to the invention having three
panels. The same numerals have been used to represent the same features in
each of figures 1 to 5.
Figure 1 shows the device with side panels 2 unfolded in the erected
position ready for arrangement between two supports between which a person
is to be transferred. The device 3 comprises three rigid panels, a central panel 1
and two side panels 2. The panels may be made of any rigid material, such as a
plastics material. The panels have a smooth transfer surface 11 having a low co
efficient of friction. Alternatively, the transfer surfaces may contain grooves
parallel to the direction of transfer of the person across the device. The central
panel has a back edge 4, a front edge 5 and two side edges 6. In the
accompanying figures, the central panel 1 is shown as having a rectangular or
substantially rectangular shape, however it must be appreciated that other
shaped central panels would suffice. For example, a central panel having a "V"
shaped configuration such that the two side edges 6 are positioned in a
convergent relationship relative to the front edge 5 such that the distance
between the side edges is greater nearer to the front edge 5 with respect to the
back edge 4. The side panels 2 are releasably connected to the central panel 5
by hinge means 8. In the accompanying figures the hinge means are parallel or
substantially parallel to one another, however the hinge means attached to a
"V" shaped panel may lie in a convergent relationship along the side edges 6 of
the central panel as previously described.
The hinge means are not located at, or pass through a central point of the
device 3 in the erected position. This is important, since when the device is
erected between two supports and carrying a load at a central position of the
device, the point of maximum stress is at a central area of the device. By
having an arrangement of panels, whereby the connection means is, or are
located away from the area of maximum stress, the hinge means and their
attachment means maybe of a lighter construction than if they were to be used
to connect panels at a central location of the device. The overall weight of the
device is therefore reduced enhancing the portability of the device.
In figure 1 two location sections 14 are shown located on an edge of the
device 3 enabling the device to be arranged around unmovable obstacles, such
as a door pillar of a motorcar or an armrest of a wheelchair, which would
otherwise hinder the co operation of the device 3 between two supports. It
must be understood that the shape of the panels and orientation of the side
panels relative to the central panel may also assist in providing a configuration
of the device suitable for arranging around unmovable obstacles. Depending
on the dimensions of the device one or more location sections maybe located
along an edge or edges of the device in the erected position to assist
arrangement of the device around unmovable obstacles. The side panels 2 have
narrower end portions A which are angled downwards relative to the plane of
the panels of the device 3 when in the erected position to aid co operation of the
side panels with support structures, between which the device is to be erected.
The term angled downwards includes curvature of the side panels 2 downwards
relative to the plane of the device in the erected position. An aperture 10 is
located on the central panel 1 close to the front edge 5 to provide a means for
carrying the device and manoeuvring it into position between two supports.
Figure 2 shows the device 3 with the side panels 2 folded across the
central panel 1 in the collapsed position. In this position, the device can be
easily stowed, for example on a wheelchair, or carried by a person.
Figure 3 is cross-section of the central panel 1 and a side panel 2 either
side of a stiff hinge joint 13. The transfer surface 11 of each panel has an
inclined portion 20 which in cross section gradually increases in height towards
the hinge joint and terminates at its highest end by way of a face 23
perpendicular or substantially perpendicular to the transfer surface 11.
Portion 20 forms a recess 28 with transfer surface 11.
Alternatively, instead of the transfer surface having an inclined portion
20, the transfer surface of each panel maybe raised uniformly to the height of
the face 23 of the recess 28 such that the transfer surface is level, as shown by
the broken lines 30. The protrusion 18 runs along an edge 6 of the panel 1 and
is mounted such that it extends over the edge 6 of the panel. The protrusion
maybe made of an elastomeric material, for example rubber. The inclined
portions 20 are located along the length of each panel. On central panel 1 the
stiff rubber protrusion 18 is affixed in abutment with an unraised portion of the
transfer surface 11 and in abutment with the face 23 of the inclined portion 20
and extending over the edge 6 of the panel. The protrusion is substantially the
same thickness as the height of the faces 23 and therefore forms a flush joint on
the surface of the device when in abutment with the faces. The panels can be
moved into an erected position until the faces of panel edges 21 and 22 acting
as stopping means abut. The panels in this position are in a co-planar or
substantially co planar arrangement. When the panels are moved into the erect
position a portion of the protrusion extending over the edge 6 can abut with the
inclined surface 11 and/or the face 23 of the raised portion of the other panel 2.
In this manner the protrusion covers the joint means preventing skin and/ or
clothing of the user transferring between two adjacent panels becoming trapped
in the hinge joint.
It can be appreciated that even if the protrusion is not in abutment with
the face 23 of the other panel 2 as may occur when there is movement between
the panels of the device when in use, the protrusion will still provide cover over
the hinge joint.
It must be appreciated that the protrusion 18 maybe attached to the side
panel 2 of the device instead of the central panel 1.
Although not shown in figure 3, the other hinge joint of the device
which connects the other side of the central panel to the other side panel is also
covered by a protrusion which may be attached to the central panel or the other
side panel. The surfaces of the central panel and the other side panel are
inclined in the manner previously described.
Figures 4a, 4b and 4c show an alternative hinge arrangement comprising
a latch mechanism which may be used with the device 3. Figure 4a is a plan
view of the underside of the device with the side panels 2 unfolded and ready
for use. Figure 4b is an end view of the device in the collapsed position taken
in the direction of arrow z of figure 4a. Figure 4c is a plan view of the transfer
surface 11 of the device.
Referring to figure 4a, the hinge means 8 are mounted on wedge shaped
mounting means 50 attached by screws located either side of the hinge joint 13.
The wedge shaped mounting means assist the connection of the hinge means to
the panels 1,2 and provides support for the side panels 2 when the device is
collapsed and panels 2 are folded inwards.
In figure 4b both the side panels 2 are folded over the central panel 1.
An end portion A of one side panel 2 rests between the mounting means 50 of
the hinge joint 13 of the other panel. The end portion A of the other panel lies
substantially parallel to panel 1 resting on top of the one side panel. The
mounting means 50 prevents the hinges moving further open thus preventing
unnecessary stress on the hinge means. The figure shows latch devices 55
located within a recess of the sliding surface 11. The latch device 55
comprises a spring assisted pawl. On the other side of the hinge joint 13 there
are provided notches 57 for receiving and abutting with the pawl.
Figure 4c shows four latch devices 55. The latch devices are embedded
within the transfer surface 11 of the device so that they are not protruding from
the transfer surface. Upon opening the panels from the collapsed position into
the erect position, the pawl 56 locates and abuts with notch 57 (not shown) of
an adjacent panel holding the panels 1 and 2 close together thus preventing the
panels opening whilst the device is in use. The latch device 55 is released by
pressing down on the pawl 56 at 56a.
Figure 5 shows the device in the erected position ready for use. Portions
A of side panels 2 are arranged to co operate with a motor car seat S and a
wheelchair W positioned adjacent to the seat S. The device is arranged so that
obstacles such as an armrest of the wheelchair 40 or a door pillar of a motorcar
41 do not hinder the erection of the device. The device is erected for use by
unfolding the side panels and co operating portions A of the side panels with
the seat S and wheelchair W.
A person seated in the motorcar can therefore transfer to the wheelchair
by shuffling along one side panel 2, across the central panel 1 and across the
other side panel 2 to the wheelchair in a sitting position without the need to
stand. Likewise, a person could transfer from the wheelchair to the motor car
by a similar action. Once transferred, the device can either be removed from
between the person and the support transferred to. Alternatively, panels can be
detached leaving part of the device (a panel) resting on the support under a
person. The device can be stowed in part or whole by folding one or more side
panels across the central panel. The device can then be carried or stowed in the
car or on a wheelchair.
The device illustrated in the drawings is not limited in its use to assisting
persons to transfer to and from a motorcar. It could be used for assisting
persons to move between any support, such as a bed or chair and another chair
or wheel chair.
The device according to the invention has advantages in that it is
lightweight, foldable, compactable and easy to carry or stow on a wheelchair.
It is to be understood that the scope of the present invention is not to be limited
by the embodiment shown in the drawings. In particular, the apparatus may be
made in a wide range of sizes to suit different uses. Moreover, the invention
includes any novel and inventive features disclosed herein either alone or in
combination with any one or more other such features.