FR2778333A1 - Wheelchair wheel conversion kit - Google Patents

Abstract

The wheel chair has castors (13a,b) and can be used as a fixed chair. A conversion kit includes two large wheels (1) to be pushed by the users hands, two guards (3) for the wheels and two parking brakes (2). The claims include a method of carrying out the conversion

Description

1i 2778333 The invention relates to a kit for transforming an armchair

  of the geriatric armchair type, as a displacement machine, the transformable armchair intended in particular for people with disabilities or reduced mobility and the transformation process. People with motor disabilities, partial or total, require special equipment such as chairs that allow them to move, and spend some time

  not negligible every day in wheelchairs.

  In addition, in a static state, these people must be installed in comfortable armchairs allowing them to maintain their position without discomfort for an extended time (several

consecutive hours).

  To date, it has been observed that the wheelchairs currently sold are not intended for an extended station, and this drawback represents a real problem, particularly in geriatrics or for young disabled people for whom the maintenance of a large autonomy of movement and long is extremely necessary. Indeed, the passage from a static wheelchair to a wheelchair, several times a day, presents an important constraint which harms the will of movement of the subject and has a considerable influence on his psyche and on his will to join socio-cultural, socio-professional activities

  or more generally community.

  To notably overcome these drawbacks, one of the aims of the present invention is to provide an armchair which is both a "place of life", in which an extended station is not only possible, but also pleasant and comfortable, and who is at the same

time a moving object.

  The subject of the invention is therefore a kit for transforming an armchair of the geriatric armchair type with small wheels or fixed rest chair, into a displacement machine with large wheels, characterized in that it comprises two wheels on which adapt a handrail, two wheel protection casings and two parking brakes. Advantageously, the kit according to the invention has reversible fixing means on the chassis of the geriatric chair or the rest chair. Preferably, the two wheels are stick wheels with a diameter

0.6 meters.

  According to a preferred embodiment of the invention, the kit also comprises a bag of screws, the use of which allows the transformation of the chair, without the need to call

to additional tools.

  The invention also relates to an armchair intended for people with reduced mobility comprising a frame to which is fixed a seat, a reclining backrest on which is fixed a headrest, adjustable armrests, lateral supports thanks to which the back of the person is retained, leg rests, a retractable foot rest characterized in that it has fixing means

  reversible from a transformation kit as described above.

  Preferably, the means for fixing the seat to the chassis, lateral supports on the chassis, legrests on the chassis, the footrest on the rear of the chassis and / or the headrest on the

backrest, are reversible.

  According to a first embodiment of the invention, the headrest is a neckrest adjustable in height by means of vertical axes

  nested in the top of the backrest.

  According to a second embodiment of the invention, the headrest

3 0 is an anatomical neck rest.

  Advantageously, the positioning in width of the lateral supports

is adjustable.

  Preferably, the height positioning of the armrests is adjustable by means of a vertical rod sliding in the

  horizontal part of the extension of the tubular chassis.

  According to a preferred embodiment of the invention, the chair further comprises an anti-tilting footrest, has an anti-tilting device comprising a spring mechanism

  and cubits in the support rails of the

  foot, said spring mechanism engaging in abutment in

said cubits.

  According to a particular embodiment of the invention, the chair further comprises a guide bar fixed to the back of the backrest by means of fixing lugs in which it is

  fitted and which are arranged on the lateral flank of the backrest.

  Advantageously, the chair according to the invention further comprises means for reversible or non-reversible attachment of a support for urine bag and / or of a socket for an IV pole and / or of a

  harness attached to the backrest or the guide bar.

  According to a preferred embodiment of the invention, the means

  Reversible fasteners mentioned above are clips.

  The invention will be better understood in the light of the description

  detailed below, which can be read with reference to the attached figures, and which

  illustrates without limitation the invention.

  Figure 1 shows a three-quarter view of the chair according

  the invention provided with the transformation kit.

  FIG. 2 represents a back view of the chair according to the invention,

not equipped with the transformation kit.

  The invention therefore aims to make life easier for people with disabilities or reduced mobility, by providing them with an armchair which is a place to live and which is also a vehicle for movement. The chair according to the invention provides its user with significant comfort and is shaped so as to have an advantageous aesthetic appearance. Preferably, the frame 6 is integral, and made of polyamide. In addition, it is designed to ensure its

  user as much autonomy as possible.

  It is with this in mind that the kit according to the invention, adaptable to the chair and thus making it transformable, has means of movement such as wheels 1, a handrail, brakes 2 and two casings 3 for protecting the wheels. 1 which serve as garment protection. Thanks to this kit adaptable at any time and without the need to use any special tool other than those contained in the bag of screws and bolts sold with the kit, the patient becomes autonomous in his movements. Patient safety is ensured in particular by brake 2 and double indexing which are

  actuable by means of a pedal 4 which can have three positions.

  The first position ensures the indexing of the wheels 1 in line, the second position is a neutral position, and the third position is that of the braking, indexed on the two wheels 1. Triggering

can be lateral or rear.

  The fact that the kit is fixed by reversible fixing means on the frame of the chair allows, after using the displacement machine, to remove this kit after the user has moved in order to limit the size of the chair when '' it is in

  a room of limited dimensions.

  So that the comfort of the user persists in the movement, and so that this movement is fairly rapid, the wheels 1 are advantageously with a diameter of 0.6 meters. The brake 2 is easily accessible, and the armrest 5 is locked in the high position by the protective casing 3 of the wheels 1 in order to avoid any contact

  of the patient's hands and clothes with the spokes of the wheels 1.

  The armchair according to the invention is formed by a tubular chassis 6 curved on each side to which is fixed a removable seat 7, a reclining backrest 8, preferably provided with a headrest 9, a handlebar 10, adjustable armrests 5 in height, possibly lateral supports 11, a footrest 12, retractable towards the rear, and

  small wheels 13a rear and 13b front.

  Preferably, the frame 6 is formed by a steel tube 32 mm in diameter covered with an epoxy resin. This tube ensures both

  the rigidity and lightness of the chair.

  The tubular frame 6 comprises two longitudinal members 14 bent at 90, the horizontal part 14a supporting the seat 7 and the vertical part 14b thereof receiving the axis of the front wheels 13b. The rear curved part has an attachment point 15 of the vertical axis 16 of the

  armrests 5 and the axle and is extended by a quasi-part

  horizontal 17 towards the rear of the chair, on which is fixed

  the base 18 of the rear wheels 13a.

  The chair according to the invention further comprises a rear transverse spacer 19 ensuring the rigidity of the rear movable train and through which passes a transmission shaft whose function is to secure the action of the two brakes 2. In fact, braking can s '' do so simultaneously on the two rear wheels, then

  even that the user operates only one lever.

  The seat 7 is removable without tools, which considerably facilitates maintenance. A space is provided between the seat 7 and the backrest 8, allowing the evacuation then the cleaning of dust and liquids. This seat 7 is removable, removable, and preferably waterproof. Preferably, the seat 7 is clipped onto the

chassis 6.

  The backrest 8 is tiltable over 55; the tilting of the backrest 8 is triggered by means of bilateral levers which control a gas spring located under the seat 7. The point of rotation of the chair is chosen so as to optimize the position

  lumbar. The backrest 8 is easily removable.

  In accordance with the invention, it is possible to adapt a headrest 9 to the chair 3 O. This headrest 9 is preferably removable. Figure 2 shows an armchair according to the invention on which the headrest is not placed. The headrest 9 consists of a padded upper part on which the patient rests his head, and two or three axes perpendicular to the longest length of this upper part which are visible or not and are embedded in sockets in the backrest 8 of the chair. The axes are preferably metallic. The sockets are preferably provided

  a locking device for locking the headrest 9.

  It is thus possible to place, interchangeably, a conventional headrest, a headrest adjustable in height or an orthopedic headrest. The height-adjustable headrest 9 makes it possible to relieve the patient's neck while holding his head laterally. The orthopedic headrest is an anatomical neckrest which can be retractable, which facilitates the movements to be made by the patient. This embodiment of the invention also makes it possible to adapt to the sockets provided in the backrest 8 accessories such as a headwash or a template adapter making the armchair according to the invention comfortable for particularly petite people or

to children.

  The chair may also have other sockets intended for the adaptation of complementary accessories such as in particular medical devices of the rod type for transfusion or infusion bag, or hygienic devices, of the urine bag type. Preferably, these sockets are from 16 to 27 mm in diameter and are fixed to the base of the rear wheels 1 or to the base 20 and / or the front transverse spacer of the chassis 6. Preferably, the sockets placed on the chair according to the invention has one end provided with two positioning pins against which the axis carrying the accessory abuts and a third transverse pin which makes it possible to block the rotation of this axis. According to a preferred embodiment of the invention, the chair also comprises horizontal sockets fixed at the level of the seat 2 to

the front of the chassis 6.

  The headrest 9, when it is not in use, can be stored at the rear of the chair: according to a particular embodiment of the invention, the rear spacer of the chair, at the bottom of the frame 6, present at at least two rings in which the axes of the headrest 9 can be slid. The padded part of the headrest 9 abuts on the rings. These rings are arranged at a height 3 5 from the ground greater than the length of the perpendicular axes. They can also be used as a point of attachment to a harness (also attached to the handlebar 10) or to carry all kinds of accessories. The chair according to the invention is of course provided with a handlebar 10 fixed on each lateral side of the chair or on the backrest 8 of the chair. The handlebars 10 of course have the usual functions of allowing the chair to be pushed and maneuvered. Preferably, the handlebar 10 is a steel tube with a diameter of 25

  mm and has lateral fixings.

  According to a preferred embodiment of the invention, the armrests 5 are adjustable in height, by means of a rack, in six positions. The adjustment lever is within reach of the user, and preferably under one of the armrests 5. The locking of the armrests 5 is automatic in the event that a weight is exerted on the armrest. The armrests 5 are preferably made of polyurethane and have an ergonomic shape. This preferred ergonomic shape allows in particular the wedging of the patient's hand at the end of the armrest. Furthermore, according to an advantageous variant of the invention, the two arms 5 are retractable, which facilitates the transfer of the patient to and from the chair. The armrests 5 can also be fitted with accessory holders and

including a tablet.

  The chair according to the invention can also include leg rests 21, which are of course removable and adjustable in height and in length. The implementation of these leg rests 21 is easy and their handling by the user of the chair is effortless due to the automatic indexing. This indexing allows the legs to be raised to the horizontal. We can use

  the legrests according to the invention while retaining the

12 standard foot.

  According to a particular embodiment of the invention, the chair also comprises removable lateral supports 11 which can be positioned in width as well as in height. These characteristics allow the chair to be adapted to the body size and support of its user by preventing it from sliding sideways. The lateral supports 11 are fixed at the top of the handlebar 10 by pins which engage in sockets fitted for this purpose in the backrest 8. The lateral adjustment and the blocking are done by expansion

a piece of rubber.

  The armchair according to the invention also comprises a removable footrest 12 which can go as far as the ground and which has three positions: a raised position for a small person, a

  normal position and a ground position, and an anti

  tilting. These results are obtained by the combination of the use of a spring mechanism and a particular shape of the support rod for the footrest 12. The support rod for the footrest 12 is part of the frame 6 and connects the base. front to rear base. The front attachment point is located at the bottom of the beam 14b. This rod has a horizontal part over two thirds of its length from the rear base on which 1 5 is made a cubit up, which is approximately in the middle, and which will serve as a stop for the carriage 22. The rod then has an oblique portion, which ends with the point of attachment to the bottom of the beam 14b. In this oblique part, three cubits are provided, on which the spring mechanism can successively engage, which induces the three positions mentioned above. The spring mechanism consists of a carriage which slides on the support rod, and which carries the two support bars of the footrest. The carriage locks in the various cubits of the rod, which form a stop, and can come out of these positions due to the spring. The function of these different elbows is to make the chair comfortable and suitable for the entire population concerned, and to avoid tilting forward when the patient stands up. The footrest 12 is

  fully retractable under the seat 7.

  The transformation method according to the invention consists in mounting the right and left brakes which are fixed to the chassis 6 by two screws, then in mounting the garment protector which is clipped onto the vertical support of the armrest and blocks the armrest in high position, remove the shutter from the hub holder, fix the wheels on the wheelchair by a threaded screw complementary to the hub holder, then place the hubcap. All accessories and elements of the public domain adaptable to known geriatric chairs are also adaptable on the

armchair according to the invention.

Claims (15)

  1. Kit for transforming an armchair of the geriatric armchair type with small wheels (13b) or fixed rest chair, in a displacement machine with large wheels (1), characterized in that it comprises two wheels (1) on which fit a handrail, two casings (3) for protecting the wheels (1) and two parking brakes (2).   2. Transformation kit according to claim 1, characterized in that each of its constituent elements, namely the wheels (1), the casings (3) for protecting the wheels and the brakes (2) have reversible fixing means on the chassis (6)   geriatric chair or rest chair.   3. Transformation kit according to any one of   Claims 1 or 2, characterized in that the two wheels (1)   are stick wheels with a diameter of 0.6 meters.   4. Transformation kit according to any one of   Claims 1 to 3, characterized in that it further comprises   a bag of screws and bolts whose use allows the transformation of the armchair, without the need to do   call for additional tools.   5. Armchair intended for people with reduced mobility comprising a frame (6) to which is fixed a seat (7), a reclining backrest (8) on which is fixed a headrest (9), adjustable armrests (5), lateral supports (11), leg rests (21) and / or a retractable footrest (12) characterized in that it has reversible fixing means for a kit of   transformation according to any one of claims 1 to   4. 6. armchair according to claim 5, characterized in that the means for fixing the seat (2) on the frame (6), lateral supports (11) on the frame (6), leg rests ( 21) on the frame (6, of the footrest (12) on the frame (6) and / or of the headrest (9) on the backrest (8) are reversible.   7. Armchair according to any one of claims 5 or 6,   characterized in that said headrest (9) is a neckrest adjustable in height by means of vertical axes fitted in the top of the backrest (8).   8. Armchair according to any one of claims 5 to 7,   characterized in that said headrest (9) is an anatomical neck rest.   9. Chair according to any one of claims 5 to 8,   characterized in that the width positioning of said   lateral supports (11) is adjustable.   10. Armchair according to any one of claims 5 to 9,   characterized in that the height positioning of the armrests (5) is adjustable by means of a vertical rod sliding in the horizontal part of the extension of the chassis (6) tubular.   11. Armchair according to any one of claims 5 to 10,   characterized in that the footrest (12) has an anti-tip device comprising a spring mechanism and cubits made in the support rods of the footrest, said spring mechanism coming into abutment in said cubits.   12. Armchair according to any one of claims 5 to 11,   characterized in that it further comprises a guide bar fixed to the back of the backrest (8) by means of fixing lugs in which it is fitted and which are arranged   on the lateral flank of the backrest (8).   13. Armchair according to any one of claims 5 to 12,   characterized in that it further comprises means for reversible or non-reversible attachment of a support for urine bag and / or of a socket for an IV pole and / or of a harness fixed at the level of the backrest (8 ) or the guide bar.   14. Armchair according to any one of claims 5 to 13,   characterized in that the reversible fixing means are clips.   15. Method for transforming an armchair according to any one   of claims 5 to 14, characterized in that one adapts to   said chair a transformation kit according to any one of claims 1 to 4.