Collective mobility aid

Abstract

The invention relates to a collective walking aid (1), comprising a wheeled frame (10) having a set of wheels (11), and at least one handle (12), the aid being characterised in that it further comprises a first seat (20) for an adult oriented towards the rear of the aid, in relation to the walking direction, and a second seat (30) for a child, oriented towards the front of the aid.

Description

technical field

[0001] This application concerns a collective mobility assistance device, which can be used both by elderly or disabled people requiring walking assistance, and by families with young children. Previous technique

[0002] Numerous models of walking assistance devices for the elderly or disabled have already been proposed. For example, there are walkers, which are medical devices comprising a frame, four wheels, and handles, allowing an elderly or disabled person to lean against the device and push it as they move around to improve their balance and maintain support.

[0003] Walkers are sometimes equipped with additional features, such as a basket for carrying equipment, a foot and / or hand braking system, etc.

[0004] Walkers are, however, underutilized compared to the population with a prescription for such equipment. This is due to several factors, including the significant bulkiness of most models. Another reason for this underutilization is the strong medical connotation associated with these walkers, which leads people with a prescription to refuse to use such equipment.

[0005] Another factor contributing to the underutilization of medical walkers is that the need for a mobility aid is strongly linked to the duration of the trip. For short trips, typically for shopping, people who need this type of device replace it with a supermarket trolley or a shopping cart. These devices provide occasional walking assistance and carry less negative connotations. Other people may also forgo walking assistance altogether for short journeys and, to avoid using a walker, reduce their outings or travel time, thus contributing to social isolation.

[0006] Document EP 3 378 460 also describes a multifunctional walking assistance device comprising a frame that can accommodate two superimposed support surfaces. These support surfaces can be used to move equipment. In one configuration, the upper support surface is removed, and the lower support surface serves as a toilet seat with a reservoir, thus enabling the assistance device to also function as a toilet. This equipment, therefore, is also limited to indoor and private use and does not overcome the drawbacks associated with other walking aids.

[0007] We know from US document 4,381870 of a shopping trolley that can adopt a configuration in which it forms a luggage rack including a child seat that is convertible into an adult seat to serve as a temporary wheelchair.

[0008] There is therefore a need for a walking assistance device that is more socially acceptable, less bulky, while guaranteeing its users the same safety and usefulness as conventional walkers. SUMMARY OF THE INVENTION

[0009] The present invention relates to an assistance device according to claim 1. The subsidiary aspects of the invention are provided in the dependent claims. DISCLOSURE SUMMARY

[0010] The invention aims to satisfy the need indicated above. In particular, one objective of the invention is to provide a mobility assistance device with a reduced medical connotation, so as to be able to assist elderly or disabled people requiring walking support in a wider range of circumstances, but also other populations.

[0011] Another aim of the invention is to be able to be made available to the public in establishments open to the public, in order to improve their accessibility.

[0012] In this regard, the invention proposes a collective mobility assistance device, comprising a rolling frame including: - a set of wheels, including two front wheels and two rear wheels, at least one handle, a first adult seat oriented towards the rear of the device, relative to the direction of travel, the first seat including a seat extending to a height of between 40 and 60 cm, and - a second child seat, oriented towards the front of the device, the second seat including a seat extending to a height of between 25 and 40 cm, the device having a width gradually decreasing from rear to front, and a spacing between the front wheels less than the spacing between the rear wheels, and each seat including a respective backrest shaped so that there is a space between the base of the backrest and the bottom of the seat.

[0013] In some embodiments, the device includes: a seat of the first seat, extending to a height corresponding to a seating height suitable for adults, and a seat of the second seat, extending to a height corresponding to a seating height suitable for children.

[0014] In some embodiments, the seat of the first seat can be foldable so as to adopt a folded configuration in which it forms a support for a material element.

[0015] In some embodiments, the second seat includes a backrest connecting a rear end of the seat of the second seat, relative to the direction of travel, and a front end of the seat of the first seat.

[0016] In some embodiments, the device comprises four wheels including two front wheels and two rear wheels, and the frame is shaped so that the two front wheels have a spacing less than the spacing of the rear wheels.

[0017] In some embodiments, the device comprises four wheels including two front wheels and two rear wheels, the frame including two longitudinal connecting elements between a front wheel and a rear wheel, and a transverse element connected to the longitudinal elements and including each handle.

[0018] In some embodiments, the frame is shaped so that the transverse element is located between the rear wheels and the front wheels, so that the longitudinal elements and the transverse element delimit, laterally and frontally, a space in which a user can position themselves.

[0019] In some embodiments, the transverse element comprises two angled arms shaped to form a lateral guardrail for an adult sitting on the first seat.

[0020] In some embodiments, the transverse element comprises two arms angled towards the front of the assistance device, in the direction of travel, the angled arms extending in a substantially vertical plane from a respective longitudinal element, and the transverse element further comprises a crossbar connecting the angled arms, the angled arms and the crossbar forming the handle of the device.

[0021] In some embodiments, each bent arm can extend laterally to the first seat, so as to form an armrest.

[0022] In some embodiments, the angle formed by each bent arm is adjustable.

[0023] In some embodiments, the cross member comprises two lateral arms, each extending in a substantially vertical plane, each arm forming a first elbow located laterally to the seat of the first seat, and a second elbow located laterally to the seat of the second seat, such that the elbows form guardrails for the first and second seats, and the cross member further comprises a first crossbar connecting the lateral arms, the first crossbar extending to the right of the front end of the seat of the first seat, and a second crossbar connecting the lateral arms, the second bar extending to the right of the rear end of the seat of the second seat.

[0024] In some embodiments, the first seat includes a seat shaped to connect the two longitudinal elements to each other and to connect the transverse element to the longitudinal elements.

[0025] In some embodiments, the first seat comprises a seat and a backrest, shaped so that there is a space between the base of the backrest and the bottom of the seat, and - the device further comprises a storage space, delimited at least by a horizontal support wall, the storage space being located at a height lower than the height of the seat of the first seat and being accessible through the space between the bottom of the seat and the base of the backrest of the first seat.

[0026] In some embodiments, the second seat includes a seat and a backrest shaped so that there is a space between the base of the backrest and the bottom of the seat, and the device further includes a storage space delimited at least by a horizontal support wall, the storage space being located at a height lower than the height of the seat of the second seat and being accessible through the space between the bottom of the seat and the base of the backrest of the second seat.

[0027] In some embodiments, the longitudinal elements of the frame may have an angled shape comprising a first portion extending from a rear wheel, and a second portion extending from a front wheel, the junction of the two portions forming an elbow located at a height greater than that of the seat of the second seat and adjacent to it so as to form a lateral guardrail for a child sitting on the second seat.

[0028] In some embodiments, the frame may further include a crossbar forming a step located under a front end of the seat of the second seat.

[0029] In some embodiments, the frame is shaped to allow the stacking, one behind the other, of a plurality of identical assistance devices.

[0030] The device described above is a collective mobility assistance device, as it combines mobility and accessibility functions for a wide range of users. Since it is a mobility assistance device that also includes an adult seat, it can be used as a walker or resting aid by elderly and / or disabled individuals. It can also be used by any tired adult to provide occasional rest. Furthermore, because it also includes a child seat, it can be used as a stroller for children. Thus, this device can be used by diverse population groups for various needs, thereby reducing its perceived medical connotation and improving its social acceptance. This type of device is particularly well-suited to public environments, such as cultural venues.

[0031] Furthermore, its stackable design makes it possible to make a set of identical devices accessible in a site open to the public in a practical way and without requiring a lot of floor space for storage. Brief description of the drawings

[0032] Other features, details, and advantages will become apparent upon reading the detailed description below and analyzing the attached drawings, on which: Fig. 1 [ Fig. 1 ] represents a first example of a mobility assistance device, in rear perspective. Fig. 2 [ Fig. 2 ] represents a first example of a mobility assistance device, in front perspective, in which the seat of the first seat is in a folded position. Fig. 3a [ Fig. 3a ] represents a first example of a mobility assistance device viewed from the side. Fig. 3b [ Fig. 3b] is a rear view, relative to the direction of travel, of an early example of a mobility assistance device. Fig. 4 [ Fig. 4 ] is a representation of several identical mobility assistance devices stacked one behind the other. Fig. 5 [ Fig. 5 ] represents a second example of a mobility assistance device, in forward perspective. Fig. 6 [ Fig. 6 ] represents a second example of a mobility assistance device, in rear perspective. Fig. 7 [ Fig. 7 ] is a side view of a second example of a mobility assistance device. Description of the implementation methods

[0033] Reference is now being made to Figures 1 And 2 representing an example of a collective mobility assistance device according to an embodiment not forming part of the invention, as well as to figures 5 to 7These represent an example of a collective mobility assistance device 1 in another embodiment. This device 1 comprises a frame 10, the frame being made of a set of tubular rods, made, for example, of metal, for example, aluminum, but also being made, in whole or in part, of another material, for example, plastic. At least some of the tubular rods may also be covered with another material, for example, fabric, particularly for the parts of the frame intended to be held by a user. Some tubular rods may also be covered with any other coating, for aesthetic and / or commercial reasons.

[0034] The frame 10 is mobile and, in this respect, includes a set of wheels 11, for example, three, four, or six wheels, to ensure the stability of the mobility assistance device 1. According to one embodiment shown in the figures, the frame 10 has four wheels 11, comprising two wheels at the front of the device 1 and two wheels at the rear, the front and rear being considered throughout with respect to the direction of travel. Furthermore, for improved stability of the mobility assistance device 1, and as shown in the figure 3b The spacing A between the rear wheels is preferably greater than the spacing B between the two front wheels. For example, the spacing between the front wheels can be between 30 and 45 cm, advantageously between 30 and 40 cm, and the spacing between the rear wheels can be between 40 and 55 cm, advantageously between 40 and 50 cm.

[0035] Furthermore, the frame includes at least one handle, designed to be grasped by a user to allow them to push, steer, and lean on the mobility assistance device. The handle may be formed from one or more of the tubular rods that make up the frame 10, for example, a bar extending transversely to the user's direction of travel. In this case, it can be considered a handle even if it can be grasped with both hands.

[0036] Based on the elements described above, device 1 assists a user's walking, allowing them to lean on the handle(s) 12 and move forward with the device. The direction of walking therefore corresponds to the direction in which the user and device 1 move when the user leans on the device at the handle(s).

[0037] Furthermore, as can be seen in particular on the figure 1Device 1 further includes a first adult seat 20, facing the rear of the device. Hereafter, the orientation of a seat refers to the direction in which a person seated in the seat is facing. The first seat 20 includes a seat 21 extending to a height suitable for adults. Thus, the seat 21 is preferably at a height between 40 and 60 cm, and more preferably between 45 and 60 cm.

[0038] In one embodiment, the first seat 20 is jointly formed by the frame 10 and the seat 21. In particular, the frame 10 is advantageously shaped to form a backrest and armrests for the first seat. In this case, the frame includes a tubular element extending above the front end of the seat 21, at a distance sufficient to allow leaning back, for example, a distance of between 20 and 40 cm. Alternatively, the first seat may also include a solid backrest extending upwards from the front end of the seat, or a backrest extending downwards from a tubular element of the frame located above the front end of the seat, as is the case in the embodiment of the figures 5 to 7 .

[0039] As can be seen in particular on the figure 2The collective mobility assistance device 1 also includes a second child seat 30, facing forward of the device 1. The second seat 30 has a seat 31 extending to a height suitable for children. Thus, the seat 31 is lower than the seat 21, preferably between 25 and 40 cm, and more preferably between 30 and 40 cm. Furthermore, the seat 31 of the second seat is positioned forward of the seat 21 of the first seat. The rear edge of the seat 31 is at the same level as (and therefore overlaps) the front edge of the seat 21.

[0040] In one embodiment, the frame is advantageously shaped to form armrests, or guardrails, for the second seat 30. Furthermore, the second seat preferably includes a backrest. In one embodiment shown in the figure 2The backrest 32 of the second seat extends to connect the rear of the seat of the first seat and the front end of the seat of the second seat. Thus, the seat of the first seat, the backrest of the second seat, and the seat of the second seat can all be made from a single S-shaped strip of material. Alternatively, as in the embodiment shown in the figures 5 to 7 , the backrest 33 of the second seat can be fixed on an element of the frame extending above the seat of this seat, without the base of the backrest being connected to the bottom of the seat, i.e. to the end of the seat located at the rear of the device with respect to the direction of travel.

[0041] Device 1 therefore presents, in addition to its mobility assistance function, additional functionalities as a child stroller, and as a seat allowing any adult to rest occasionally.

[0042] Advantageously, as shown on the figure 2 The seat 21 of the first seat is preferably foldable so as to form the seat 21 when unfolded, and to form a support for a material element when folded. For example, the seat can fold in half. Alternatively, as in the embodiment shown in the figures 5 to 7 The seat 21 of the first seat may not be foldable. However, the mobility assistance device may still include a storage space 17 delimited at least by a horizontal support wall 31a on which equipment can be placed, this storage space being able to be arranged longitudinally between the first and second seats and located high up under these seats.

[0043] With reference to figures 3a and 3b, not being part of the invention, and 5 to 7, we will now describe the frame 10 in more detail. The frame 10 comprises two longitudinal elements 13, each connecting a rear wheel to a rear end of a longitudinal element, and a front wheel to a front end of the longitudinal element. The frame 10 also comprises a transverse element 14 connected to the two longitudinal elements, this transverse element 14 comprising the handle 12. In the embodiment shown in the figures 3a and 3b , this transverse element of the frame connects the longitudinal elements together.

[0044] In one embodiment shown on the figures 5 to 7 , this transverse element can be assembled to the two longitudinal elements by means of one or more third part(s), in this case the seat 21 of the first seat.

[0045] Finally, the frame 10 includes at least two transverse reinforcements 15 linking together the longitudinal elements 13, and forming a support respectively for the seats of the first seat 20 and the second seat 30.

[0046] As schematically represented on the figure 3a The transverse element 14, which carries the handle 12, is advantageously located between the front and rear wheels of the assistance device 1, so that the longitudinal elements and the transverse element 14 define, laterally and forward, a space in which a user can position themselves to use the mobility assistance device. The operating position of the device 1 (for the walking assistance function of an elderly or disabled person) is schematically represented by a cross on the figures 3a and 3bIn this position, the rear wheels of the device are behind the user, providing more stability and safety for the user.

[0047] In the embodiment shown in the figures 1 to 4Not being part of the invention, the transverse element 14 comprises two angled arms 140 extending forward from the assistance device, the angled arms extending in a substantially vertical plane from a respective longitudinal element. Each angled arm 140 comprises a first portion 141 extending upward from a longitudinal element, and a second portion 142 extending forward from the first portion. Finally, the transverse element 14 comprises a transverse bar 143 connecting the angled arms 140, and more specifically the forward ends of the second portions of each angled arm.In this embodiment, both the crossbar 143 and the angled arms 140 form the handle 12, since they offer a user the possibility of gripping either the bar or the angled arms, specifically at the elbows of these arms formed between the first and second portions of an arm, or at the second portion of an arm. These different possibilities offer greater user comfort.

[0048] In addition, the angle between the first and second portion of each arm, corresponding to the elbow of each bent arm, can be adjusted according to a plurality of positions, thus allowing the configuration of the device to be adapted to the user.

[0049] In one embodiment, the transverse element 14 is configured to form, in addition to a handle, a backrest and armrests for the first seat 20. In this respect, the angled arms 140 extend laterally to the seat of the first seat, so as to form the armrests. The crossbar 143 of the transverse element extends in the configuration described above for the backrest of the first seat, namely above the front edge of the seat 21 of the first seat, and at a height suitable for a user to lean their back against the crossbar, for example, between 30 and 50 cm.

[0050] As an alternative embodiment shown on the figures 5 to 7The transverse element 14 comprises two lateral arms 144, each extending in a substantially vertical plane. Each lateral arm 144 forms a first elbow 145 located laterally to the seat 21 of the first seat, the elbow opening towards the front of the device and towards the back of the first seat. Each lateral arm 144 also forms a second elbow 146 located laterally to the seat 31 of the second seat, the second elbow opening towards the rear of the device and towards the back of the second seat. In addition, the transverse element 14 comprises two transverse bars 147, 148 connecting the lateral arms, the first transverse bar 147 extending directly from the front end of the seat 21 of the first seat, that is, directly from the back of the first seat 20, and thus contributes to forming a backrest for the first seat.In this way, the part of the cross element formed by the first elbows 145 and the first crossbar 147 forms both one or more handles of the device when used as a walker, but the first elbows 145 also form a side rail or armrests for the first seat.

[0051] The second crossbar 148 extends from the rear end of the second seat's seat, i.e., from the bottom of the first seat. A backrest C can be mounted on this second bar and extend downwards from it to form a backrest for the second seat.

[0052] With reference to the figure 2 The device 1 may also include hand-operated brakes 40, located near or on the handle, so that a user can simultaneously grasp the handle 12 and operate the brakes. In the example of the figure 2The brakes are located on the second portion 142 of each angled arm 140. In the example of the figures 5 to 7 , the brakes are located on the upper part of the first elbows 145 of the side arms 144.

[0053] Device 1 may also, or alternatively, include one or more foot-operated brakes 41, for example, near a rear wheel of the device. Foot-operated brakes are two-position brakes that can either only allow or completely block any rotation of the wheel, while hand-operated brakes are progressive brakes whose braking intensity is related to the intensity with which they are used.

[0054] In the embodiment shown in figure 3aIn the diagram, where device 1 is shown in profile, the longitudinal frame elements 13 also have an angled shape comprising a first portion 130 extending from a rear wheel and a second portion 131 extending from a front wheel. The junction between the first portion 130 and the second portion 131 of each longitudinal element 13 forms an elbow extending to a height higher than, and adjacent to, the seat 31 of the second seat, so as to form a lateral guardrail 132 for a child seated in the second seat. In one embodiment, the first portion 130 extends in a substantially oblique direction from the rear wheel at an angle to the horizontal of between 25° and 40°. The second portion 131 extends at an angle to the vertical of between 10° and 20°.

[0055] In the embodiment shown on the figures 5 to 7, the side guardrail for a child sitting in the second seat is formed by the second elbows 146 of the side arms 144 of the transverse element 14.

[0056] In this embodiment, the angled arms 140 of the transverse element 14 are connected to the first portion respectively of each longitudinal element 13.

[0057] Back to the figure 2 , or to the figure 5 , the frame 10 also includes a crossbar 16 located under the seat 31 of the second seat, at the level of its front end, so as to form a step or footrest for the second seat 31. This crossbar extends for example to a height from the ground of between 15 and 20 cm.

[0058] With reference to the figure 4The mobility assistance device 1 can be configured to allow a plurality of identical devices 1 to be stacked one behind the other. This is made possible, on the one hand, by the fact that the front wheels are spaced closer together than the rear wheels, and on the other hand, by the fact that the overall width of the device gradually decreases from rear to front. In particular, the longitudinal elements 13 do not extend strictly parallel to each other but at an acute angle to the direction of travel. Similarly, the angled arms 140 of the transverse element 14 of the first embodiment described above, as well as the lateral arms 144 of the second embodiment, extend in a vertical plane forming an acute angle with the direction of travel, and not parallel to it.The ability to stack a series of devices makes these devices particularly suitable for use in public places or places that can accommodate the public.

[0059] We will now describe in more detail one embodiment of the mobility assistance device, an example of which is shown on the Figures 5 And 6 This variant differs from the one shown on the figures 1 to 4 mainly by the frame structure 10 and the seat structure 20 and 30.

[0060] As described previously, the frame 10 can be made from a set of tubular rods and comprises two longitudinal elements 13, each connecting a rear wheel to a rear end of a longitudinal element, and a front wheel to a front end of the longitudinal element. The two longitudinal elements 13 are connected to each other by two transverse connecting elements. These can be the two seats 21, 31 as shown in the Figures 5 And 6which are then configured to connect the two longitudinal elements together, for example, by means of screws or rivets. Alternatively, or in addition, the two transverse connecting elements can correspond to the two transverse reinforcements 15 located under the seats 21, 31, which also connect the longitudinal elements together. Note that in the example described here, the seats 21, 31 are made of plastic material and the transverse reinforcements 15 serve to stiffen the seats.

[0061] The frame 10 further includes a transverse element 14 located between the rear and front wheels. The transverse element 14 comprises two lateral arms 144, each extending in a substantially vertical plane. Each lateral arm 144 forms a first elbow 145 located laterally to the seat 21 of the first seat, the elbow being open towards the front of the device and towards the back of the first seat. Each lateral arm 144 also forms a second elbow 146 located laterally to the seat 31 of the second seat, the second elbow being open towards the rear of the device and towards the back of the second seat. In addition, the transverse element 14 comprises two crossbars 147, 148 connecting the lateral arms, the first crossbar 147 extending directly from the front end of the seat of the first seat, that is, directly from the back of the first seat 20.The portion of the cross member formed by the first elbows 145 and the first crossbar 147 forms one or more handles 12 of the device when used as a walker. Advantageously, the first elbows 145 and the second elbows 146 form a side rail or armrests for the first and second seats, respectively. The second elbows can also be used by a child to pull themselves onto the seat 31 of the second seat.

[0062] In the example described here, the transverse element 14 is connected to the two longitudinal elements 13 by means of two vertical connecting elements 21a which are an integral part of the seat, and more particularly of the seat 21 as particularly visible on the figure 6Thus, the seat 21 is shaped to connect the two longitudinal elements 13 to each other and to connect the transverse element 14 to the longitudinal elements 13. In an alternative embodiment, each vertical connecting element 21a can also be a separate piece intended to be fixed on an upper portion of a longitudinal element 13 and on a lower portion of a lateral arm 144.

[0063] In the embodiment described here, the first seat 20 comprises a seat 21 and a backrest 22. The backrest 22 is received and fixed on the first crossbar 147 and optionally on a portion of each first elbow 145 connected to the crossbar as shown in the figure 6The backrest 22 extends downwards from this first bar to form the backrest of the first seat 20. It should be noted that the seat 21 and the backrest 22 are shaped so that there is a space between the base of the backrest 22 and the bottom of the seat 21. The space between the base of the backrest 22 and the bottom of the seat 21 allows access to a storage space 17 arranged longitudinally between the first and second seats at a height lower than the height of the seat of the first seat.

[0064] In the embodiment described here, the second seat 30 comprises a seat 31 and a backrest 33. The backrest 33 can be configured to be received and fixed on the second crossbar 148 and on a portion of each second elbow 146 connected to the crossbar 148 as shown in the figure 5The backrest 33 extends downwards from this second bar to form the backrest of the second seat. It should be noted that the seat 31 and the backrest 33 are shaped so that there is a gap between the base of the backrest 33 and the bottom of the seat 31. The gap between the base of the backrest 22 and the bottom of the seat 21 also provides access to the storage compartment 17 mentioned previously. The gap between the base of the backrest 33 and the bottom of the seat 31 provides access to the storage compartment 17, which is positioned at a height lower than the seat height of the second seat.

[0065] The storage space 17 is delimited at least by a lower support wall 31a. In the embodiment described here, the storage space 17 can be integrated into one of the seats, for example as an extension of the seat 31, as particularly visible on the figure 7This simplifies assembly. The storage space 17 can be located between the two seats and can therefore be accessed from at least one of the following open spaces: the space between the base of the backrest 22 and the bottom of the seat 21, and the space between the base of the backrest 33 and the bottom of the seat 31. In the example described here, the bottom of the seat 31 extends into the lower support wall 31a, which includes at least one lip and is located at a height lower than that of the seat 31. Objects are thus contained within the storage space and cannot slide forward from the seat 31.

[0066] It should be noted that the longitudinal elements 13 and the transverse element 14, and more particularly the first elbows 145 connected by the first crossbar 147, laterally and frontally delimit a space in which a user can place themselves, for example when gripping the handle to move the device or when leaning on the device to rest.

[0067] It should be noted that, although not represented in the figures 5 to 7 The frame 10 is configured so that the two front wheels have a spacing B that is less than the spacing A of the rear wheels, as described with reference to figures 1 to 4 Similarly, frame 10 is shaped to allow the stacking, one behind the other, of a plurality of identical assistance devices in a manner similar to what has been described previously.

Claims

1. A collective mobility assistance device (1), comprising a rolling frame (10) including: - a set of wheels (11), comprising two front wheels and two rear wheels, - at least one handle (12), - a first adult seat (20) facing backwardly of the device, relative to the walking direction, the first seat (20) comprising a seating base (21) extending to a height of between 40 and 60 cm, and - a second child seat (30), facing forwardly of the device, the second seat (30) comprising a seating base (31) extending to a height of between 25 and 40 cm the device having a width gradually decreasing from the rear to the front, with a spacing between the front wheels that is less than the spacing between the rear wheels, and each seat (20, 30) comprising a respective backrest (22, 33) shaped such that there is a gap between the base of the backrest (22, 33) and the bottom of the seating base (21, 31).

2. The assistance device (1) according to the preceding claim, wherein the seating base (21) of the first seat (20) is foldable so as to assume a folded configuration in which it provides support for a material element.

3. The assistance device (1) according to one of claims 1 or 2, wherein the second seat (30) comprises a backrest (32) interconnecting a rear end of the seating base (31) of the second seat (30) to the front end of the seating base (21) of the first seat (20), in relation to the walking direction.

4. The assistance device (1) according to one of the preceding claims, the frame (10) comprising two longitudinal elements (13) for connecting a front wheel to a rear wheel, and a transverse element (14) connected to the longitudinal elements (13) and comprising each handle (12).

5. The assistance device (1) according to the preceding claim, wherein the frame (10) is shaped so that the transverse element (14) is located between the rear wheels (11) and the front wheels (11), so that the longitudinal elements (13) and the transverse element (14) delimit, laterally and frontally, a space in which a user can stand.

6. The assistance device (1) according to claim 4, wherein the transverse element (14) comprises two bent arms (140; 144) shaped to form a side handrail for an adult seated on the first seat (20).

7. The assistance device (1) according to one of claims 4 or 5, wherein the transverse element (14) comprises two bent arms (140) extending forwardly of the assistance device (1), in the walking direction, the bent arms (140) extending in a substantially vertical plane from a respective longitudinal element (13), and the transverse element (14) further comprises a transverse bar (143) interconnecting the bent arms (140), with the bent arms (140) and the transverse bar (143) together forming the handle (12) of the device.

8. The assistance device according to one of claims 4 or 5, wherein the transverse element (14) comprises two lateral arms (144) each extending in a substantially vertical plane, with each arm (144) forming a first bend (145) located laterally to the seating base of the first seat, and a second bend (146) positioned laterally to the seating base (31) of the second seat (30), such that the bends (145, 146) form handrails for the first and second seats (20, 30), and the transverse element (14) further comprises a first transverse bar (147) connecting the lateral arms (144), with the first transverse bar (147) extending in line with the front end of the seating base (21) of the first seat (20), and a second transverse bar (148) connecting the lateral arms, with the second bar extending in line with the rear end of the seating base (31) of the second seat (30).

9. The assistance device (1) according to any one of the preceding claims, wherein the first seat (20) includes a seating base (21) shaped to interconnect the two longitudinal elements (13) and to connect the transverse element (14) to the longitudinal elements (13).

10. The assistance device (1) according to any one of the preceding claims, wherein: - the device further comprises a storage space (17), at least delimited by a horizontal support wall (31a), the storage space (17) being located at a height lower than the height of the seating base (21) of the first seat (20) and being accessible through the space between the bottom of the seating base (21) and the base of the backrest (22) of the first seat (20).

11. The assistance device (1') according to any one of the preceding claims, wherein: - the device further comprises a storage space (17) at least delimited by a horizontal support wall (31a), the storage space being located at a height lower than the height of the seating base (31) of the second seat (30) and being accessible through the space between the bottom of the seating base (31) and the base of the backrest (33) of the second seat (30').

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