EP3556338A1 - Modular walking frame device - Google Patents

Abstract

The invention relates to a walker device (1) comprising a tricycle frame (2) connected to two front wheels (3) and to at least one rear wheel (4), said frame (2) comprising a main cross member (7) on which is fixed a seat or support device (15; 24; 26; 29), a front part (8) of a frame, having an inverted Y shape connected to the two front wheels (3) and to said main beam ( 7). The walker device comprising at least one yoke (6) fixed on the main cross member (7) and on which said front part (8) of frame is pivotally mounted. Said at least one yoke is fixed between said first end (71) of the cross member and said seat device so that said first end of the cross member (71) equipped with said handlebar (5) forms with the front part of the frame (8) a open angle to the front of the walker device. Said main cross member is of square or rectangular section and the yoke (6) comprises a first element (60) U-shaped and a second element (61) U-shaped.

Description

The invention relates to a walker device, intended more particularly but not exclusively for people with mobility difficulties such as persons with reduced mobility.

It also relates to improvements made in the field of three-wheeled vehicles such as balance bikes.

The invention has been developed to help people move.

People suffering from certain diseases, such as Parkinson's disease, suffer from "freezing" syndromes: Freezing is characterized by a sudden immobility that can last for a few seconds or a few minutes. The feet remain stuck to the ground, the person stomps and is unable to transfer the weight of his body on one leg in order to move forward. This syndrome is the cause of many falls.

However, if these people are offered devices on which to rest (walker for example) then the freezing syndrome disappears and the person can move more easily: this phenomenon seems to have a relationship with the stable reference mark that the devices constitute .

At the origin of the invention, it has therefore been desired to create a device for assisting the movement of such persons.

We have been interested in devices equipped with wheels, such as adult balance wheels: indeed, according to the shape of their frame and the height of the saddle, such devices can be "straddled" by people who, once installed , are stable while sitting on the saddle with their feet flat on the ground on either side of the frame.

We know of the document EP2 844 207 such an exercise bike allows people with reduced mobility to move smoothly and effectively just by pushing on their feet.

• une traverse principale sur laquelle est fixé un dispositif d'assise ou de support, qui présente une première extrémité de traverse équipée d'un guidon et une seconde extrémité de traverse reliée à ladite roue arrière, et
• une partie avant de cadre, reliée aux deux roues avant et à ladite traverse principale.

The document EP 2 844 207 describes a walker device, comprising a tricycle frame connected to two front wheels and a rear wheel, said frame comprising:

• a main beam on which is fixed a seat or support device, which has a first end of the cross member equipped with a handlebar and a second end of the cross member connected to said rear wheel, and
• a front frame part, connected to the two front wheels and to said main transom.

Such a walker device can be bulky when not in use: that is why a foldable version is provided in this document. To do this, the frame is designed in two parts connected together by a hinge.

The document US D 753 553 also presents a technical solution that allows the walker device to bend for less space when not in use.

Nevertheless, both solutions remain cumbersome, even when folded.

The invention aims to provide a less bulky walker device when folded.

It also aims to provide a stable device because it is designed primarily for disabled people who can not move with their legs alone.

The invention also aims to provide a walker device that can easily be taken in hand, and that makes a plane support accessible to a user: in fact, the devices of the state of the art do not allow a user to to be able to access, in a comfortable way, a flat support, for example at a table, for cooking, for lunch, for playing.

• une traverse principale sur laquelle est fixé un dispositif d'assise ou de support, qui présente une première extrémité de traverse équipée d'un guidon et une seconde extrémité de traverse reliée à ladite au moins une roue arrière,
• une partie avant de cadre, reliée aux deux roues avant et à ladite traverse principale,

la traverse principale de cadre étant droite et le dispositif déambulateur comportant une chape fixée sur la traverse principale et sur laquelle ladite partie avant de cadre est également montée pivotante entre une position d'utilisation du dispositif suivant laquelle ladite partie avant de cadre est éloignée de la traverse principale et une position repliée suivant laquelle ladite partie avant de cadre est rapprochée de la traverse principale.We know of the document DE 37 20 368 a walker device which comprises a frame connected to two front wheels and at least one rear wheel, said frame comprising:

• a main transom on which is fixed a seat or support device, which has a first end of the crossbar equipped with a handlebar and a second end of the transom connected to said at least one rear wheel,
• a frame front portion, connected to both front wheels and to said main transom,

the main frame cross member being straight and the walker device comprising a yoke fixed on the main transom and on which said part front frame is also pivotally mounted between a position of use of the device wherein said front frame portion is remote from the main cross and a folded position in which said front frame part is moved closer to the main cross.

Although this embodiment makes it possible to fold up the walker device when it is not in use, it does not allow the user to access a plane support in a comfortable way: indeed, when the user is on the device walker, the front part of frame abuts against a flat support whose height is lower than the height of the handlebars. Thus, when the user is on this walker device, the latter keeps the user away from the plane support.

Another embodiment of a walker device described in the document is known CN 202620130 .

This device is not a tricycle, but it comprises a yoke fixed on the main transom at a distance from said handlebar, between said first end of the transom and said seating device, so that said first end of the transom equipped with said handlebar forms with a front part of the frame an open angle towards the front of the walker device
The presence of this open angle between the first end of the cross member and the front part of the frame for positioning the handlebar and the first end of the cross member above a flat support (the front part of the frame passing below said flat support ) so that the user is positioned closer to a table, for example.

Nevertheless, this device is not a tricycle, it is not stable and can not be used by people with balance problems.

Finally, the invention aims to provide a walker device for people who can no longer walk, that we can easily take in hand, without having to step over a seating device such as a saddle to position itself on it: indeed, the walker device being designed primarily for people with Difficulties in using their legs, it was planned to achieve it so that it adapts to the person who wants to take in hand, not the other way around.

The invention also aims to provide a walker that makes accessible the flat supports whose height does not exceed the height of the handlebar of the device.

• une traverse principale sur laquelle est fixé un dispositif d'assise ou de support, qui présente une première extrémité de traverse équipée d'un guidon et une seconde extrémité de traverse reliée à ladite au moins une roue arrière,
• une partie avant de cadre, présentant une forme en Y inversé reliée aux deux roues avant et à ladite traverse principale.

To this end, the invention relates to a walker device comprising a tricycle frame connected to two front wheels and to at least one rear wheel, said frame comprising:

• a main transom on which is fixed a seat or support device, which has a first end of the crossbar equipped with a handlebar and a second end of the transom connected to said at least one rear wheel,
• a front part of the frame, having an inverted Y shape connected to the two front wheels and to said main transom.

The walker device comprising at least one yoke fastened to the main transom and on which said front frame part is pivotably mounted between a position of use of the device according to which said front frame part is remote from the main transom and a folded position according to which said front frame part is brought closer to the main transom.

The device is remarkable in that said at least one yoke is fixed between said first end of the cross member and said seat device so that said first end of the cross member equipped with said handlebar forms with the front part of the frame an open angle towards the seat. before the walker device. In addition, said main cross member is of square or rectangular section and the yoke comprises a first U-shaped element and a second U-shaped element, the two said first and second U-shaped elements respectively having a first and a second bottom wall, said first and second bottom walls being connected by a curved strip, the two said first and second U-shaped elements each also having respectively two lateral walls projecting and perpendicular to the bottom wall of each element, said clevis being attached to said main transom by positioning one or the other of said bottom walls against a surface of said main transom and the two protruding side walls of the bottom wall against two surfaces of said main transom.

Thus, the presence of the yoke can fold the walker device to make it less bulky when it is not used.

In addition, the positioning of the yoke on the main transom remote handlebar makes it possible to make a flat support accessible to the user, because the flat support can be inserted at least partially in the open angle towards the front of the device walker.

Finally, the device is particularly stable thanks to the polygonal shape of the cross section of the main crossbar, which combines with the polygonal shape of the first or second elements of the yoke: the polygonal shape prevents any rotation of the yoke on the crossbar during of the assembly and thus, the front frame part of the device is perfectly oriented relative to the main cross, which makes the walker device perfectly stable.

The device according to the invention may also comprise another yoke fixed on the main cross-member and on which the seat or support device is removably and pivotably mounted between a position of use according to which the seat or support device stands on the main transom, forming a first angle with the main transom, and a folded position in which the seat or removable support device is folded against the main transom, forming a second angle with the main transom, said first angle being greater than said second angle and said second angle being between 0 ° and 40 °.

This embodiment provides a walker device which has two foldable parts against the main cross member: the front part of the frame and the seat and support device. In this way, the walker device is in a compact form in the folded position which takes up less space than the known walker devices: that of the document EP2 844 207 above is indeed higher than the device according to the invention which has a much longer shape, flatter.

It will also be noted that the removable mounted device allows its easy replacement by another seating device: the walker device thus makes it possible to adapt the seating device to the needs of its user and is scalable.

• le dispositif d'assise ou de support amovible comporte une cheminée de montage qui est montée pivotante sur ledit second élément en forme de U de ladite autre chape,
  et le premier élément en forme de U de ladite autre chape est fixé sur la traverse principale du cadre,
• ledit dispositif d'assise ou de support est mobile en translation verticale entre une position basse et une position haute et le dispositif déambulateur comporte un système de commande manuelle du déplacement vertical dudit dispositif d'assise et de support, ledit système de commande manuelle étant positionné sur ledit guidon. On notera que, dans ce cadre de ce mode de réalisation, la présence d'un système de commande manuelle de la position de la selle permet d'adapter le dispositif déambulateur à l'entrejambe de l'utilisateur, sans que l'utilisateur n'ait à enjamber le dispositif : ainsi, il n'y a pas de risque de déséquilibre pour l'utilisateur. Le positionnement du système de commande sur le guidon limite également le risque de déséquilibre : l'utilisateur s'appuie naturellement sur ses bras pour se positionner sur le dispositif et ses bras trouvent l'équilibre en prenant appui sur le guidon. Ainsi, la position du système de commande manuelle sur le guidon n'entrave pas l'équilibre de l'utilisateur car il peut actionner le système sans avoir à lâcher le guidon.
• la chape comporte un élément de rigidification en forme de triangle qui s'étend entre lesdites première et seconde parois de fond suivant un plan perpendiculaire auxdites première et seconde parois de fond,
• le cadre comporte une seconde traverse reliant ladite seconde extrémité de la traverse principale à une extrémité de la partie avant de cadre au voisinage des deux roues avant, et en ce que la seconde traverse porte des repose-pieds,
• le cadre est enfermé au moins partiellement dans un carter de protection présentant au moins deux parois parallèles, fixées de part et d'autre de la traverse principale du cadre,
• le dispositif est équipé d'un système de freinage au moins sur ladite au moins une roue arrière et d'un système de commande de frein, relié audit système de freinage, ledit système de commande de frein étant prévu au niveau du guidon et étant relié audit système de freinage par des câbles, lesdits câbles s'étendant à l'intérieur de ladite traverse principale,
• le dispositif d'assise ou de support amovible est une selle,
• ladite selle comporte une partie centrale de selle et deux parties latérales de selle montées pivotantes entre une position rétractée, suivant laquelle les parties latérales de selle se trouvent orientées vers le bas et une position déployée suivant laquelle les parties latérales de selle se trouvent orientées sensiblement dans le même plan que celui de ladite partie centrale de selle, les pivots des parties latérales de selle étant commandés simultanément au moyen d'un pantographe reliant les parties latérales de selle à un axe vertical,
• la traverse principale de cadre est droite,
• la traverse principale comporte une première extrémité supérieure de traverse qui est inclinée par rapport à un support plan sur lequel le dispositif repose, et une seconde extrémité de traverse qui s'étend suivant un plan sensiblement parallèle audit support plan,
• le dispostif comporte un siège enfant fixé sur ladite traverse principale entre ledit guidon et ledit dispositif d'assise,
• le dispositif comporte un support pour membre inerte fixé sur ladite traverse principale,
• le guidon comportant une partie principale de guidon et deux extrémités recourbées de guidon, ladite partie principale de guidon et les deux extrémités recourbées de guidon étant équipées de manchons sur lesquels un utilisateur peut appuyer une partie de ses avant-bras.

The invention may also include the following features, taken separately or in combination:

• the removable seating or support device comprises a mounting chimney which is pivotally mounted on said second U-shaped element of said other clevis,
  and the first U-shaped member of said other yoke is attached to the main cross member of the frame,
• said seat or support device is movable in vertical translation between a low position and a high position and the walker device comprises a manual control system of the vertical displacement of said seat and support device, said manual control system being positioned on said handlebar. Note that, in this context of this embodiment, the presence of a manual control system of the position of the saddle allows to adapt the walker device to the crotch of the user, without the user has to step over the device: thus, there is no risk of imbalance for the user. The positioning of the control system on the handlebars also limits the risk of imbalance: the user naturally leans on his arms to position himself on the device and his arms find balance by resting on the handlebars. Thus, the position of the manual control system on the handlebar does not interfere with the balance of the user because it can operate the system without having to let go of the handlebars.
• the yoke comprises a triangular-shaped stiffening element which extends between said first and second bottom walls in a plane perpendicular to said first and second bottom walls;
• the frame comprises a second cross member connecting said second end of the main cross member to one end of the frame front portion to near the two front wheels, and in that the second crossbar carries footrests,
• the frame is enclosed at least partially in a protective casing having at least two parallel walls, fixed on either side of the main cross member of the frame,
• the device is equipped with a braking system at least on the at least one rear wheel and a brake control system, connected to said braking system, said brake control system being provided at the handlebar and being connected braking system with cables, said cables extending inside said main transom,
• the seat or removable support device is a saddle,
• said saddle comprises a central saddle portion and two saddle side portions pivotally mounted between a retracted position, wherein the saddle side portions are downwardly oriented and an extended position in which the saddle side portions are oriented substantially in the same plane as that of said central seat part, the pivots of the lateral saddle parts being controlled simultaneously by means of a pantograph connecting the saddle side parts to a vertical axis,
• the main frame transom is straight,
• the main transom comprises a first upper end of the crosspiece which is inclined with respect to a plane support on which the device rests, and a second end of the transom which extends in a plane substantially parallel to said flat support,
• the dispostif comprises a child seat fixed on said main crossbar between said handlebar and said seating device,
• the device comprises an inert member support fixed on said main beam,
• the handlebar comprising a main portion of handlebar and two curved handlebar ends, said main handlebar portion and the two curved handlebar ends being provided with sleeves on which a user can support a portion of his forearms.

• Une assistance à la marche, pour les personnes musculairement faibles,
• Un moyen de rééducation fonctionnelle post-opératoire,
• Une reprise d'activité physique pour toutes les pathologies où la gestion de l'équilibre est un paramètre sensible pour rassurer les personnes et répondre aux déficiences de santé,
• Un maintien du contact physique entre parents, l'un étant une personne à mobilité réduite et l'autre pas car il offre une autonomie à la personne à mobilité réduite, lui permettant de rester auprès de ses proches...

Thus produced, the device according to the invention constitutes a technical assistance device for people with reduced mobility by allowing:

• Walking assistance, for people with weak musculature,
• A means of functional rehabilitation after surgery,
• A recovery of physical activity for all pathologies where balance management is a sensitive parameter to reassure people and respond to health deficiencies,
• A maintenance of physical contact between parents, one being a person with reduced mobility and the other not because it offers autonomy to the person with reduced mobility, allowing him to stay with his family ...

The device can be used both indoors and outdoors: it is an original way of travel, secure especially for people with reduced mobility, also offering another look at the disability and ways to overcome it.

Thanks to the original design of the device allowing the separation of the seat and support device to replace it with another, the device according to the invention can be used by other people than people with reduced mobility. It can also be scalable.

It finally allows to carry different objects in addition to serve as a walker device.

• La figure 1 est une vue de côté d'un dispositif déambulateur conforme à l'invention,
• La figure 2 est une vue de dessous d'un élément charnière que comporte le dispositif conforme à l'invention,
• La figure 3 est une vue en perspective de l'élément charnière montré en figure 2,
• La figure 4 est une vue de côté de l'élément charnière montré en figures 2 et 3,
• La figure 5 est une vue de devant de l'élément charnière montré en figures 2, 3 et 4,
• La figure 6 est une autre vue en perspective du dispositif conforme à l'invention, sur lequel est positionné un homme vu également en perspective,
• La figure 7 est une vue de dessus du dispositif conforme à l'invention, visualisant les espaces dédiés au positionnement des pieds de part et d'autre du cadre du dispositif,
• La figure 8 illustre schématiquement le mouvement de deux éléments que comporte le dispositif conforme à l'invention, le dispositif étant illustré partiellement et en perspective,
• La figure 9 illustre schématiquement le mouvement de deux éléments que comporte le dispositif conforme à l'invention, le dispositif comportant des éléments charnières différents de ceux montrés en figure 8 et étant illustré partiellement et en perspective,
• La figure 10 montre une variante d'un dispositif conforme à l'invention, vu de côté,
• La figure 11 montre encore une autre variante d'un dispositif conforme à l'invention, vu de côté,
• La figure 12 montre en perspective une première partie du dispositif conforme à l'invention,
• La figure 13 montre en perspective une seconde partie du dispositif conforme à l'invention,
• La figure 14 illustre schématiquement un homme en position d'utilisation du dispositif conforme à l'invention, l'homme et le dispositif étant montrés en vue de côté,
• La figure 15 illustre schématiquement un homme poussant le dispositif conforme à l'invention, le dispositif étant équipé d'une nacelle pour enfant, l'homme et le dispositif étant montrés en vue de côté,
• La figure 16 illustre schématiquement un homme poussant le dispositif conforme à l'invention, le dispositif étant équipé d'une assise pour adulte, l'homme et le dispositif étant montrés en vue de côté,
• La figure 17 illustre schématiquement un homme poussant le dispositif conforme à l'invention, le dispositif étant équipé d'un panier, l'homme et le dispositif étant montrés en vue de côté,
• La figure 18 montre une variante d'un dispositif conforme à l'invention, en vue de face, destiné aux enfants handicapés,
• La figure 19 montre le dispositif de la figure 18 en vue de côté,
• La figure 20 montre encore une variante d'un dispositif conforme à l'invention, en vue de côté,
• La figure 21 est une vue de côté schématique d'un accessoire fixé sur le dispositif montré en figure 20,
• La figure 22 est une vue de dessus d'une partie de l'accessoire montré en figure 21 et d'une partie du cadre, de sorte à illustrer le positionnement de la partie de l'accessoire par rapport au cadre du dispositif,
• La figure 23 est encore une variante du dispositif conforme à l'invention et montre une partie du cadre du dispositif qui est équipé d'un second accessoire,
• La figure 24 est une autre vue du second accessoire, suivant un angle de vue différent de celui de la figure 23,
• La figure 25 illustre encore une variante du dispositif selon l'invention, montré en vue de côté,
• La figure 26 est une vue en perspective d'un dispositif d'assise et de support conforme à un mode de réalisation selon l'invention, le dispositif d'assise étant déployable et illustré en position déployée,
• La figure 27 est une vue schématique de devant du dispositif d'assise montré en figure 26, en position rétractée,
• La figure 28 est une vue schématique de devant du dispositif d'assise montré en figure 26, en position partiellement déployée,
• Et la figure 29 est une vue schématique de devant du dispositif d'assise montré en figure 29, en position déployée.

To be able to be executed, the invention is set forth in a sufficiently clear and complete manner in the following description which is, in addition, accompanied by drawings in which:

• The figure 1 is a side view of a walker device according to the invention,
• The figure 2 is a bottom view of a hinge element that comprises the device according to the invention,
• The figure 3 is a perspective view of the hinge element shown in figure 2 ,
• The figure 4 is a side view of the hinge element shown in Figures 2 and 3 ,
• The figure 5 is a front view of the hinge element shown in Figures 2, 3 and 4 ,
• The figure 6 is another perspective view of the device according to the invention, on which is positioned a man also seen in perspective,
• The figure 7 is a top view of the device according to the invention, showing the spaces dedicated to the positioning of the feet on either side of the frame of the device,
• The figure 8 schematically illustrates the movement of two elements that comprises the device according to the invention, the device being partially illustrated and in perspective,
• The figure 9 schematically illustrates the movement of two elements that comprises the device according to the invention, the device comprising hinge elements different from those shown in FIG. figure 8 and being partially illustrated and in perspective,
• The figure 10 shows a variant of a device according to the invention, seen from the side,
• The figure 11 shows yet another variant of a device according to the invention, seen from the side,
• The figure 12 shows in perspective a first part of the device according to the invention,
• The figure 13 shows in perspective a second part of the device according to the invention,
• The figure 14 schematically illustrates a man in position of use of the device according to the invention, the man and the device being shown in side view,
• The figure 15 schematically illustrates a man pushing the device according to the invention, the device being equipped with a child nacelle, the man and the device being shown in side view,
• The figure 16 schematically illustrates a man pushing the device according to the invention, the device being equipped with an adult seat, the man and the device being shown in side view,
• The figure 17 schematically illustrates a man pushing the device according to the invention, the device being equipped with a basket, the man and the device being shown in side view,
• The figure 18 shows a variant of a device according to the invention, in front view, intended for children with disabilities,
• The figure 19 shows the device of the figure 18 in side view,
• The figure 20 still shows a variant of a device according to the invention, in side view,
• The figure 21 is a schematic side view of an accessory attached to the device shown in FIG. figure 20 ,
• The figure 22 is a top view of a part of the accessory shown in figure 21 and a part of the frame, so as to illustrate the positioning of the part of the accessory relative to the frame of the device,
• The figure 23 is still a variant of the device according to the invention and shows part of the frame of the device which is equipped with a second accessory,
• The figure 24 is another view of the second accessory, from a different angle of view than figure 23 ,
• The figure 25 further illustrates a variant of the device according to the invention, shown in side view,
• The figure 26 is a perspective view of a seating and support device according to an embodiment according to the invention, the seating device being deployable and illustrated in the deployed position,
• The figure 27 is a schematic front view of the seating device shown in FIG. figure 26 , in the retracted position,
• The figure 28 is a schematic front view of the seating device shown in FIG. figure 26 , in a partially deployed position,
• And the figure 29 is a schematic front view of the seating device shown in FIG. figure 29 , in the deployed position.

In the following description, the terms "lower", "higher", "high", "low", etc. are used with reference to the drawings for greater ease of understanding. They should not be understood as limitations of the scope of the invention.

In the following description, several embodiments are shown in the drawings. To simplify the reading, the references designating the same objects or similar objects (same function but possible different forms) have been retained from one embodiment to another.

The figure 1 shows a first embodiment of a walker device 1 according to the invention.

The walker device 1 is a type of adult balance bike.

The walker device 1 comprises a frame 2, two front wheels
3, a rear wheel 4 and a handlebar 5, in a conventional manner.

The particularity of the invention lies in the shape of the frame and in the presence of at least one yoke 6 which will now be described with reference to this first embodiment.

The frame 2 can be made of wood, metal alloy, plastic, resin, carbon or any other material rigid enough to support the weight of an adult.

The frame 2 comprises a main cross member 7 formed by a square section tube having a first upper end 71 and a second lower end 70. The main cross member 7 is straight.

The frame 2 also has a front part 8 of frame.

The front part 8 of the frame is connected to the two front wheels 3. It is visible in more detail on the Figures 6 to 9 .

The front portion 8 of the frame is made from square section tubes. It has an inverted Y shape, comprising a main arm 80 connected to the main cross member 7 and two secondary arms 81, extending symmetrically on either side of a plane of symmetry comprising the main arm 80.

The two secondary arms 81 of the front frame 8 are each equipped, at their free end, with a fixing plate 9 (visible more particularly in figure 7 ) on which is fixed a clevis 10 of wheel 3: the clevis 10 of wheel is a U-shaped piece having an axis on which the wheel 3 is mounted free to rotate.

Fixing plates 9 may also serve as a support for attaching shock absorbing elements (not shown).

The front wheels 3 are rotatable about their axis. It should be understood, however, that they could also be pivotally mounted about a vertical axis without departing from the scope of the invention.

In the context of this embodiment, the fixing plates are of substantially rectangular shape with rounded corners, having a width of substantially 100 mm for a length of substantially 145 mm.

Regarding the rear wheel 4, several embodiments are possible:
The figures 1 , 7 , 10 and 11 show a first embodiment according to which the rear wheel 4 is fixed to a second yoke 11 wheel.

The wheel yoke 11 is a U-shaped piece whose arms are positioned on either side of the wheel 4, the wheel 4 being rotatably mounted about its axis, which is itself fixed between the two arms. of the screed 11.

The clevis 11 of the wheel 4 is fixed to the second end 70 of the main transom 7.

The figures 6 and 13 show another embodiment of the rear wheel 4: the rear wheel 4 is double and mounted on a tubular bearing 12, engaged in the tube of the main transom 7 (see figure 13 ).

The tubular bearing 12 has a through opening traversed by a projecting axis 13 on either side of the tubular bearing 12. A wheel 4 is then engaged on each of the projecting parts of the axis 13, on either side of the tubular bearing 12.

The front wheels 3 and rear 4 have a diameter of substantially 250 mm.

It is possible to drill two through openings in the tubular bearing 12 to position the axis 13 in the up position or in the low position, thus allowing two wheel diameters 4.

The figure 13 also shows a braking system 14, fixed around the axis 13 of the rear wheel 4. The braking system 14 is connected to a system control device provided at the handlebar 5 (not shown but conventional in itself) by cables which are here introduced inside the main transom 7.

The handlebar 5 is shown more particularly in figures 1 and 12 . It is made by a hollow tube 50 in this example, but it could be full without departing from the scope of the invention.

The tube 50 has two end portions 51 which are aligned with each other along a line D perpendicular to the axis Z of the main cross member 7.

The tube 50 also has a curved central portion 52, connecting the two end portions 51.

The curved central portion 52 is fixed at its center to a bracket 53. To do this, the bracket 53 has an end comprising a through opening, through which the curved central portion 52 is inserted and fixed.

The bracket 53 has a second end which is pivotally mounted on a fastener 54 to the main transom 7.

To do this, the main cross member 7 is equipped with a protruding pin 55, and the fastener 54 is fixed on the pin 55.

Thanks to this bracket 53 and its fastener 54, the handlebar 5 can tilt around a substantially horizontal axis parallel to the axis D of the handlebar. Preferably, the bracket includes safety catches for fixing the inclination of the handlebar 5.

Reference will now be made to the screed 6 that comprises the device according to the invention.

The yoke 6 is fixed on the main cross member 7 and allows the movable attachment of a seat or support device.

The term "seat or support device" will be understood to mean a device that allows a user to sit down or to load a load on the walker device 1.

In the context of the embodiment presented on the Figures 1 to 14 , the seat and support device is a saddle 15.

In the context of the embodiment shown, the walker device comprises two clevises 6: the two clevises 6 are attached to the main crossbeam 7. One of the clevises 6 carries the saddle 15 (the seating and support device) and the other connects the main transom 7 to the front portion 8 of the frame 2.

The two elements carried by the yokes 6 (saddle 15 and front frame part 8) are both mounted on an axis carried by each of the yokes 6, allowing the pivoting movement of these two elements.

The Figures 2 to 5 show an embodiment of these screeds 6.

The yoke 6 comprises two U-shaped elements: a first element 60 and a second element 61.

In the context of the example illustrated in figure 1 the first and second U-shaped elements are of identical shape. In the context of the illustrated example on Figures 2 to 5 the first and second U-shaped elements do not have the same shape.

However, the first and second elements 60 and 61 of the two embodiments have in common to each have a bottom wall 62 and 63, respectively, and that these two bottom walls are connected by a curved strip 64.

The advantage of making a cross section square (or rectangular) is to position and fix the two yokes 6 on the cross without risk that the yoke can be rotated around the main crossbar 7.

It should be noted that, although the example illustrates a tubular main cross member 7 of square section, the invention also extends to the production of a tubular main cross member 7 of rectangular section, producing the same technical effect: to prevent the rotation of the yoke around the main beam 7 after fixing.

The yoke 6 has dimensions adapted to be positioned astride the cross member and so that the two lateral protruding walls 65 (for the first element 60), located on either side of the bottom walls of the first and second elements 60 and 61, are positioned on either side of the main crossbar 7 and so that the bottom wall of the first or the second element is positioned against a surface of the main transom 7.

The lateral protruding walls 66 of the second U-shaped element 61 allow attachment and rotation of the objects attached to the main transom: the saddle 15 and the front part 8 of the frame.

To do this, the protruding walls 66 each have two or three through apertures: one of the apertures serves to support the ends of a rod (or screed cross) on which is also mounted a portion of the reported object: c This is so that the reported object can rotate around the rod (or screed 6). The other opening serves as a passage for a fastener, such as a pin or a screw. Finally, a third opening makes it possible to fix the attached object in the folded position, by also inserting a pin.

As for the first element 60, it also has two through openings, used here only for fixing the yoke 6 on the main transom 7: in fact, the side walls 65 are each positioned against a surface of the main transom: the attachment is made, for example, by screwing through the walls of the main transom and through the side walls 65.

The figure 8 shows an embodiment where the screeds 6 illustrated in Figures 2 to 5 are used to secure the saddle 15 and the front part 8 of the frame.

The Figures 8 and 9 illustrate with arrows F the possible rotation of the saddle 15 and the front part 8 of the frame between a position of use (position represented on the Figures 8 and 9 ) and a folded position (not shown).

In the use position, the saddle 15 (or the seat or support device) stands on the cross-member and forms a first angle A with it.

In the folded position, the saddle 15 (or the seat or support device) is folded against the cross member: if the end of the saddle 15 touches the crossbar 7, it forms a second angle B (visible in figure 1 ).

It can be seen that the first angle A is greater than the second angle B. In the context of our example, the angle B is between 0 and 40 °. More precisely, it is substantially 35 °.

It should be noted that the saddle 15 is mounted by being inserted into a mounting chimney 16. It is the mounting chimney 16 of the saddle 15 which is pivotally mounted on the yoke 6.

The mounting chimney is a hollow tube into which a rod can be inserted: as can be seen in figure 8 or 9 , the mounting chimney 16 is a square or rectangular section tube into which a rod is inserted. which is connected to the saddle 15. The shape of the section of the mounting chimney wife at best the inner shape of the yoke 6 on which it is mounted.

More particularly, the square or rectangular shape matches the internal U-shaped second element 61 of the yoke, to fit perfectly. This has the effect of maintaining in position the two elements to assemble them in a pivoting manner, for example by installing an axis passing through both the side walls of the second element 61 and the mounting chimney 16.

The rod which is connected to the saddle 15 is inserted into the mounting chimney 16 when the saddle 15 is mounted on the device according to the invention. To remove the saddle 15, simply slide the rod to extract it from the assembly chimney 16.

By removing the saddle portion 15 from the mounting chimney (i.e., the saddle portion which includes the seat), then the mounting chimney can be folded back completely against the main beam 7, forming an angle with her close to 0.

It is the same for the front portion 8 of pivotally mounted frame on the second clevis 6: the front portion 8 of the frame can adopt a position of use shown in FIG. figure 1 for example, according to which the frame front portion is remote from the main transom 7.

It can also adopt a folded position, symbolized by the arrow F on the figure 8 or on the figure 9 , according to which the frame front portion 8 is brought closer to the main transom 7 until the main arm 80 is substantially parallel to the axis of the main transom 7 (or forms an angle substantially close to 0 with the main transom seven).

Thus, the ambulatory device according to the invention can bend to form a substantially elongated mass, which extends around the main transom 7.

In the embodiment of the screeds 6 illustrated in Figures 1 to 5 and 8 the two U-shaped members 60 and 61 have bottom walls which form an angle C between substantially 100 ° and 120 °. Preferably, in the illustrated example, the angle C is substantially 110 °.

The screeds 6 may also comprise a stiffening element 17, shown for example in figures 1 and 8 : this stiffening element 17 is a substantially triangular plate whose edges bear against the bottom walls 62 and 63 of the U-shaped elements 60 and 61.

The stiffening element 17 is perpendicular to the bottom walls 62 and 63. This stiffening element provides a better resistance of the yokes 6 to the weights that are exerted on them when the walker device is used.

It should be understood that the invention is not limited to the specific form of the screeds 6 illustrated in FIG. Figures 1 to 5 and 8 . Indeed, the figure 9 shows another embodiment of screeds 6.

According to this embodiment, the yokes 6 are made by two perforated plates 67 in the form of a triangle.

Each of the two perforated plates 67 is fixed on either side of the main cross member 7 of the frame 2, making the edge of two perforated plates 67 coincide with the lower edge of the main cross member 7. In addition, the two perforated plates are oriented symmetrically on either side of the main transom 7 and face each other.

A clevis pin 6 is fixed between the two perforated plates fixed on the main crossbar 7, and the mounting chimney 16 of the saddle 15 is pivotally mounted around the clevis axis 6.

Reference will now be made to a mode of use of the walker device according to the invention.

The Figures 6 and 7 illustrate a walker device 1 according to the invention used by a person 18 to move.

The person 18 shown in figure 6 is astride above the saddle 15 advancing by the rear of the walker device. It will be noted that the person does not have to step over the device: the saddle 15 is positioned at a height lower than the crotch of the person.

Advantageously, it is expected that the saddle 15 is positioned at a height of substantially 75 cm.

Also preferably, the handlebar 5 is placed at a height of substantially 105 cm.

Two zones Z1 have been identified by ellipses on either side of the main frame 7: these are the zones where the feet of the person 18 are positioned when he moves the device according to the invention while sitting on the saddle 15.

For a comfortable use of the device according to the invention, it is expected that these zones Z1 extend over a length E of substantially 53 cm. Thus, the distance between the handlebar 5 of the saddle 15 must be between 50 and 60 cm.

It is also expected that the handlebar extends over a length D of substantially 55 cm, for a grip without fatigue of the user 18.

It could be expected to reduce the length D up to approximately 35 cm for comfortable use of the device 1 by persons 18 with certain pathologies.

The device according to the invention could also include other elements for even more comfort of the user users 18: for example, the figure 10 shows an embodiment according to which the frame 2 comprises a second crosspiece 19.

The second crosspiece 19 connects the second lower end 70 of the main cross member 7 to a lower end 82 of the front frame portion 8, in the vicinity of the two front wheels 3.

This second crosses 19 door footrests 20, allowing the user 18 to position his feet in height if it wishes to be pushed on the walker device.

The figure 11 Another feature of the device according to the invention is that it can be equipped with a protective casing 21 comprising at least two plates 22 made of polycarbonate (or synthetic glass) positioned on either side of the housing. main crossbar 7, to protect the yokes 6 and the main cross 7 in particular. The frame 2 is thus enclosed at least partially between the two plates 22 and constitute parallel walls, fixed on either side of the main cross member 7 of the frame 2.

It should be understood that the plates could be made of materials other than synthetic glass: for example, they could be made of wood.

Thanks to the presence of the yoke 6, ensuring the pivot of the element to which it is attached and also (and possibly) its withdrawal, the walker device 1 according to the invention can be scalable.

Indeed, the yoke 6 makes it possible to fix any kind of support to the main crossbar 7, these supports being able to be in particular saddles 15.

The Figures 14 to 17 show alternative embodiments of the device according to the invention:
The figure 14 shows the walker device 1 equipped with a saddle 15, used as a balance bike by a person 18.

In the context of the embodiment illustrated in figure 15 , the yoke 6 is fixed to a first support 23 for a nacelle 24 intended to accommodate a toddler.

In the embodiment shown in figure 16 , the clevis 6 is fixed to a second support 25 for a chair 26: thus, the walker device can be transformed into a kind of wheelchair, in case of worsening of the disease of a disabled person 30. It will be noted that, in this case, a holding piece 27 is provided to bear between the back of the chair 26 and the main crossbar 7 to stiffen the backrest.

According to another exemplary embodiment shown in figure 17 , the yoke 6 is fixed to a third support 28 which carries a basket 29: according to this embodiment, the walker device can be used as a carriage.

Reference will now be made to an embodiment specifically designed for children.

According to this embodiment, the main cross member 7 of the frame 2 has a portion inclined relative to the horizontal, corresponding to the first upper end 71, and a substantially horizontal portion corresponding to the second lower end 70 of the cross member.

Thus realized, the main transom allows to position a saddle at the height of the crotch of a child while keeping a cross section sufficiently inclined so that it does not interfere with the positioning of the user. The height of the saddle 15 is between substantially 35 cm and substantially 45 cm.

The angle between the inclined portion 71 of the cross member 7 and the substantially horizontal portion 70 is substantially between 130 ° and 140 °, preferably 135 °.

The saddle 15 is fixed in a hollow tube 72, itself fixed to the crosspiece 7 and more particularly to the lower end of the inclined portion 71 of the crossbar.

The saddle 15 can be adjustable in height.

The front wheels 3 are pivotally mounted (double arrow P): they thus rotate about their axis (rotation R) and around a vertical axis, which allows a great malleability of the device which is easily oriented in all directions by its user.

In the context of this embodiment, a double rear wheel 4 is also provided: these wheels 4 are only mounted to rotate about their common axis.

Also in this embodiment, the handlebar 5 is an ergonomic handlebar: it has two ends 56 curved inwardly which can be grasped by the hands of the user. The end portions of the ends 56 are covered with sleeves 40 which provide comfort for the user.

The main portion 57 of handlebar 5 then serves as a support zone for the forearms of the user: the portion 57 is also equipped with sleeves 40 on which the forearms of the user are supported.

The main part 57 is made in the same way as the handlebar 5 shown in FIG. figure 12 and described above.

The main part 57 and the two curved ends 56 are substantially in the same plane.

In the context of this embodiment, the height of the handlebar 5 is substantially 75 cm.

Reference will now be made to Figures 20 to 22 , which concern the addition of an accessory 31 on the frame of the device according to the invention.

The accessory 31 is a baby seat that is attached to the upper end 70 of the crossbar 7, near the handlebars: it is to allow a disabled person, using the device, to move with a child. young age: indeed, it is often impossible for people with reduced mobility to be able to move with their toddler (case of myopathy, multiple sclerosis, amputations etc). The device according to the invention offers this autonomy to these people.

The accessory 31 comprises several elements: firstly, it comprises a child seat 32 having a seat 33, a backrest 34 and supports 35 for the legs and lateral safety parts 36.

To allow attachment of the seat / accessory 31, the seat 32 comprises a lower portion equipped with a fastening element 37 which is associated with another fastening element 38, designed to be held on the upper end 70 of the cross member. 7.

This other fastening element 38 comprises a U-shaped portion 43, having two lateral branches 39 and 39 'coming respectively above and below the cross member, on either side of the front portion 8 of the 2. More precisely, the lateral branch 39 'is placed under the crossbar 7, against the front face of the front portion 8 of the frame, while the branch 39 is placed on the crossbar, behind the front portion 8 of frame 2.

The seat is held in a vertical position on the frame by exerting a pressure on the frame thanks to the weight of the seat (added to that of the child). The branch 39 'bears against the front portion 8 of the frame 2 and the front portion 8 forms a stop which prevents the seat from sliding downwardly along the crosspiece 7.

The branch 39 is secured to a projecting lug 41 having a through opening 42. A fixing element 44, such as a screw / nut system, can be introduced through the opening 42, and ensures the attachment of the element 37 of the seat to the element 38 of the accessory 31.

Such systems are known to those skilled in the art and will not be further described: they have been shown schematically on the figure 21 .

The U-shaped element 43 is positioned on the cross-member 7 by being introduced laterally. To keep it in position, a locking system is provided lateral (not shown): for example, another U-shaped element could be attached to the U-shaped element 43, being positioned laterally on the other side of the crossbar, and screwed to the element 43.

This attachment means of the baby seat 32 is only one embodiment of others. The invention will not be limited to this specific embodiment of the seat fastening means.

Reference will now be made to Figures 23 and 24 to describe a second accessory that can be fixed on the frame 2 of the device according to the invention.

The device according to the invention and intended for people unable to walk can be used by a disabled person whose leg is inert (hemiplegia, or amputation). Indeed, to use the device to move, only one leg is needed to push the device.

In the context of this embodiment, the device is equipped with an accessory 90 for supporting the inert member.

The accessory 90 comprises a padded support 91 fixed on a plate 92. The padded support 91 has a bowl shape 94 to comfortably secure the inert member (hold it in position on the support and prevent it from slipping off on one side or the other of the support when it rests on it).

The plate 92 is secured to a fastening tab 93 on the frame 2.

The bracket 93 is of bent shape and can be welded under the plate 92. It thus has a perpendicular portion 95 which is designed to attach to the frame 2 of the device.

To do this, the perpendicular portion 95 of the fixing lug 93 has a through opening through which a screw 96 can be introduced which also comes through the yoke 6 associating the main cross member 7 and the front portion 8 of the frame 2.

The assembly is held in position with a nut.

It is then possible to orient the sweat support as best as possible to the user, by loosening the screw-nut system and by pivoting the accessory around the axis of the screw 96.

The figure 25 further illustrates an alternative embodiment, according to which the device according to the invention comprises a saddle 15 whose height can be controlled manually:
The saddle 15 comprises a jack device, which can be actuated by means of a manual control system 58 fixed on the handlebar 5 and connected to the jack device via a cable system 59.

When the manual control system 58 is actuated by the user, the saddle 15 rises under the action of the jack. When the saddle reaches the crotch, the user stops operating the manual control system and the saddle locks in position.

To lower the saddle 15, the user can also sit on the saddle while operating the manual control system 58: the saddle then drops under the pressure of the weight of the user. The saddle can also descend by exerting a manual pressure on it.

When the position of the saddle is correct for the user, he releases the manual control system 58 and the saddle then locks in position.

This embodiment allows a patient to be easily positioned on the device without having to step over the saddle 15: thus, the user is positioned above the saddle through the back of the device. To do this, he pulls the camera to him to pass in his legs.

Before adjusting the seat height, the brake system must be actuated.

To further facilitate the positioning of the user on the device, there is provided a particular saddle 15, which prevents the user having to spread his legs to position his crotch above the saddle 15.

This particular saddle will now be described with reference to Figures 26 to 29 .

The saddle 15 shown in figure 26 comprises three parts: a central saddle portion 150 and two saddle side portions 151.

The saddle side portions 151 are made symmetrical on both sides of the saddle central portion 150.

The central part of saddle 150 is fixed: it does not move vertically. The vertical adjustment of the central part of the saddle is done either manually or thanks to the manual control system 58 mentioned above.

The two saddle side portions 151 are pivotally mounted between a retracted position shown in FIG. figure 27 and an unfolded position shown in figure 29 . The figure 28 shows a semi-extended position of the lateral parts 151.

The saddle central portion 150 and the saddle side portions 151 are made of fleece for greater comfort of the user.

The saddle central portion 150 is fixed on a vertical axis 152.

The saddle side portions 151 are pivotally mounted about a point 153 fixed on the vertical axis 152.

The pivot is controlled by a pantograph 154, that is to say a device articulated on the vertical axis 152.

The pantograph 154 comprises, for this purpose, a pin 155, movably mounted along the axis 152, which is connected to the two lateral parts 151 by connecting rods 156.

The connecting rods 156 are symmetrical and each have a substantially bent shape: one end of the rods 156 is attached to a saddle side portion 151 and the other end is fixed to the pin 155.

When the pin 155 rises along the vertical axis 152, the rods 156 transmit this movement to the saddle side portions 151 which then pivot.

The pin 155 is movably mounted between two high and low positions: in the high position of the pin 155 on the vertical axis 152, the saddle side portions 151 are in the extended position ( figure 29 ), and in the lower part of the pin 155 on the vertical axis 152, the saddle side portions 151 are in the retracted position ( figure 27 ).

When the pin 155 is between the high position and the low position, the saddle side portions 151 are in the partially deployed position ( figure 28 ).

To maintain in the deployed position the saddle side portions 151, there is provided a locking system 157 of the pin 155 on the vertical axis 152.

It may be, for example, a clamp system.

It is understood from the above description as the invention allows a person with difficulty to move to regain autonomy.

It is also understood that the ingenious realization makes it possible to transform the device to give it several utilities.

However, it should be understood that the invention is not limited to the embodiments specifically described, and extends to the implementation of any equivalent means.

Claims (15)

Rollator device (1) comprising a tricycle frame (2) connected to two front wheels (3) and at least one rear wheel (4), said frame (2) comprising: - a main cross member (7) on which is fixed a seat or support device (15; 24; 26; 29), which has a first end (71) crossbar equipped with a handlebar (5) and a second cross-member end (70) connected to said at least one rear wheel (4), a front part (8) of a frame, having an inverted Y shape, connected to the two front wheels (3) and to said main beam (7),
the walker device comprising at least one yoke (6) fixed on the main cross member (7) and on which said front part (8) of frame is pivotally mounted between a position of use of the device according to which said front portion (8) of frame is remote from the main beam (7) and a folded position in which said front frame part (8) is brought closer to the main beam (7),
characterized in that said at least one yoke is secured between said first end (71) of the cross member and said seating device so that said first end of the cross member (71) equipped with said handlebar (5) forms with the front part of the frame (8) an open angle to the front of the walker device,
in that said main transom is of square or rectangular section,
and in that the yoke (6) has a first U-shaped member (60) and a second U-shaped member (61), both U-shaped first and second members (60, 61) respectively a first (62) and a second (63) bottom wall, said first and second bottom walls (62, 63) being connected by a curved strip (64), both said first and second members (60, 61) in U-shape also each having two protruding side walls (65, 66) respectively, said yoke (6) being fixed to said main cross member by positioning one or the other of said bottom walls (62) against a surface of said cross member main and both sides lateral projections (65) of the bottom wall (62) against two surfaces of said main transom. Device according to claim 1, characterized in that it comprises another yoke (6) fixed on the main cross member (7) and on which the seat or support device (15; 24; 26; 29) is removably mounted and pivoting between a use position in which the seating or support device (15; 24; 26; 29) stands on the main transom (7), forming a first angle (A) with the main transom ( 7), and a folded position in which the removable seat or support device (15; 24; 26; 29) is folded against the main cross member (7), forming a second angle (B) with the main cross member, said first angle (A) being greater than said second angle (B) and said second angle (B) being between 0 ° and 40 °. Device according to claim 2, characterized in that the removable seat or support device (15) comprises a mounting chimney (16) which is pivotally mounted on said second U-shaped element (61) of said other clevis,
and in that the first U-shaped member (60) of said other yoke is attached to the main cross member (7) of the frame (2). Device according to any one of the preceding claims, characterized in that said seat or support device is movable in vertical translation between a low position and a high position and in that the walker device comprises a manual movement control system. vertical said seat and support device, said manual control system being positioned on said handlebar. Device according to any one of the preceding claims, characterized in that the yoke comprises a triangular-shaped stiffening element (17) extending between said first and second bottom walls (62, 63) in a plane perpendicular to said first and second bottom walls (62, 63). Device according to any one of the preceding claims, characterized in that the frame (2) comprises a second crossmember (19) connecting said second end (70) of the main cross member (7) to one end (82) of the front part (8) in the vicinity of the two front wheels (3), and in that the second crossbar (19) carries footrests (20). Device according to any one of the preceding claims, characterized in that the frame (2) is enclosed at least partially in a protective housing (21) having at least two parallel walls (22), fixed on either side of the main transom (7) of the frame (2). Device according to any one of the preceding claims, characterized in that it is equipped with a braking system (14) at least on the at least one rear wheel (4) and a brake control system connected to it said braking system (14), said brake control system being provided at the handlebar (5) and being connected to said braking system (14) by cables, said cables extending inside said main beam (7). Device according to any one of the preceding claims, characterized in that the seat or removable support device is a saddle (15) Device according to claim 9, characterized in that said saddle comprises a saddle central portion (150) and two saddle side portions (151) pivotally mounted between a retracted position, in which the saddle side portions (151) are oriented downwardly and in an extended position in which the saddle side portions (151) are oriented substantially in the same plane as that of said central seat part (15), the pivots of the saddle side parts (151) being controlled simultaneously by means of a pantograph connecting the saddle side parts (151) to a vertical axis. Device according to any one of the preceding claims, characterized in that the main frame cross member (7) is straight. Device according to any one of claims 1 to 10, characterized in that the main cross member (7) has a first upper end of the cross member (71) which is inclined with respect to a plane support on which the device rests, and a second crossbar end (70) which extends in a plane substantially parallel to said planar support. Device according to any one of the preceding claims, characterized in that it comprises a child seat fixed on said main cross member (7) between said handlebar (15) and said seating device. Device according to any one of the preceding claims, characterized in that it comprises an inert member support (90) fixed on said main beam (7). Device according to any one of the preceding claims, characterized in that the handlebar (5) comprising a main handlebar portion (57) and two curved handlebar ends (56), said main handlebar portion (57) and both ends handlebars (56) being provided with sleeves on which a user can support a portion of his forearms.

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