WO2024089317A1

WO2024089317A1 - Modular assembly making it possible to form a pushchair and a wheeled vehicle for a child

Info

Publication number: WO2024089317A1
Application number: PCT/FR2023/000154
Authority: WO
Inventors: Joseph Mazoyer; Philippe Bajard
Original assignee: Id Developement Limited; Design Office
Priority date: 2022-10-28
Filing date: 2023-10-15
Publication date: 2024-05-02
Also published as: FR3141426A1

Abstract

The invention relates to an assembly of modular elements that make it possible either to form a pushchair (2) or to obtain a wheeled vehicle (3) that a child can straddle; this assembly comprises: - a seat (5)/driving handle (6) sub-assembly; the base plate (15) of the seat (5) is connected to the handle (6) and movable relative to this handle between an unfolded state and a folded state; and - a wheeled vehicle (3), which forms the chassis and the wheels of the pushchair (2) in the "pushchair" configuration; wherein the plate (15) is dimensioned so that, in the unfolded position, it rests on a gripping handle (20) that the vehicle (3) comprises, and, in the folded state, it exposes the portion of the machine (3) that a child is intended to straddle.

Description

Title of the invention: Modular assembly making it possible to constitute a stroller and a wheeled vehicle for children

[0001] The present invention relates to a set of modular elements allowing, depending on the assembly configuration of the elements, either to constitute a stroller, or to obtain a wheeled vehicle capable of being ridden by a child.

[0002] It is useful for a parent to be able to have, at short notice, a stroller for transporting a child, for example from a home to a kindergarten, and a wheeled vehicle, so that the child can have fun with this machine, for example once they arrive at kindergarten.

[0003] Currently a stroller and a child's wheeled vehicle are separate objects, which can be used alternatively. The result is that, when the child is transported by the stroller, the parent must transport the wheeled vehicle, which is a certain constraint given the weight and bulk of such a vehicle.

[0004] There is currently no satisfactory solution to this problem on the market, and the main objective of the present invention is to provide such a solution, namely to provide a set of elements such that aforementioned, allowing you to switch from the “stroller” configuration to the “machine” configuration quickly and easily.

[0005] An additional objective of the invention is to provide a set of elements such as aforementioned, allowing the stroller to be folded into a reduced volume in order to facilitate the storage or transport of this assembly when not in use.

[0006] An additional objective of the invention is to provide a set of elements such as those mentioned above, making it possible to obtain the stability required for the stroller without limiting the possibilities of use of the machine by the child. nor increase the volume occupied by the set of elements in the folded state.

[0007] To achieve at least the aforementioned main objective, the set of elements according to the invention comprises:

- a subassembly formed by a stroller seat and by a stroller driving handle, the seat comprising a seat and a backrest, the seat being connected to the driving handle while being movable relative to this handle, this mobility occurring between a state of unfolding relative to the handle, in which the seat is capable of receiving a child, and a state of folding, in which this seat is close to the handle, extending along it ;

- a wheeled vehicle for children, which forms the chassis and the wheels of the stroller in the "stroller" configuration, this vehicle comprising a body capable of being ridden by a child, this body comprising, at its front part, a grip handle capable of being grasped by a child riding said body, and comprising means for mounting the driving handle on this body; the seat is dimensioned so as to, in said unfolded position, rest on said grip handle, thus allowing stable support of the seat by this grip handle; in said folded state, the seat allows the part of the machine intended to be ridden by a child to be released.

[0008] As is understandable, the wheeled machine is integrated into the stroller as the rolling chassis of this stroller. It follows that a parent does not, when transporting a child in the stroller and also wishes to have a wheeled vehicle for the child's amusement, have to transport this vehicle with wheels at extra cost.

[0009] In its unfolded position, the seat is capable of receiving the child in a stable and secure manner; in the folding position of this seat, the child can straddle the machine and be driven by the parent by means of said driving handle.

[0010] Said seat/driving handle sub-assembly may not be removable relative to said body of the machine; However, this would result in the disadvantage that the child would only be able to have fun with said seat/driving handle sub-assembly mounted on said wheeled machine, therefore with a certain amount of space and a certain weight; therefore, preferably, said means for mounting the driving handle on the body of the machine are designed so as to allow removable mounting of said seat/driving handle sub-assembly.

[0011] This subassembly can therefore be dismantled in relation to the wheeled machine, thus allowing the child to have a machine comprising only said body, the wheels and said grip handle.

[0012] The seat could simply rest on said grip handle; preferably, however, to prevent any risk of untimely movement of the seat in certain situations, in particular in the event of the stroller overturning, the set of elements comprises means for connecting the seat to the grip handle.

[0013] According to one possibility in this case,

- the grip handle is in the shape of a "T", that is to say it has an upper bar forming the equivalent of a "handlebar", this upper bar comprising first connecting means at its ends, And

- the seat has lateral parts capable of covering these ends of the upper bar and presents, at the level of these lateral parts, second connecting means capable of coming into engagement with said first connecting means to achieve the connection of the 'seat to the grab handle. [0014] The first connecting means in question can for example be constituted by holes having screw threads arranged in said ends of the upper bar, and the second connecting means are then constituted by screws capable of passing through said lateral parts of the seat and to be screwed into said holes.

[0015] According to a preferred embodiment of the invention,

- said driving handle has lower parts connected to upper parts by pivoting connections, these pivoting connections allowing the driving handle to be placed either in an unfolded state, for driving the stroller, or in a state of folding, in which said lower and upper parts are placed in a position close to the body of the wheeled machine, along the lateral sides of this body; And

- the seat is pivotally connected to said pivoting connections via mounting foils which offset the plane formed by the seat relative to the pivot axes formed by the pivoting connections, this offset allowing the seat to come over the body of the machine in said folded state.

[0016] The set of elements according to the invention can thus adopt a reduced volume in this folded position, allowing its easy storage or transport.

[0017] Preferably, said gripping handle is able to be placed in two vertically stepped positions, namely a lowered position, making it possible to reduce the bulk of the set of elements when not in use, and a raised position, making it possible to position the grab handle at a height suitable for the child riding the machine to grab this handle.

[0018] This arrangement makes it possible to further reduce the volume occupied by the set of elements when it is not used.

[0019] According to a possible embodiment of the invention in this case, said gripping handle comprises a column forming a tubular portion while the body of the machine forms a tubular extension receiving this tubular portion in a telescopic manner, and comprises immobilization means making it possible to immobilize said tubular portion and said tubular extension relative to each other in one or the other of the two aforementioned positions of the gripping handle.

[0020] These immobilization means may in particular comprise respective holes of said tubular portion and of said tubular extension, coming into coincidence with one another in one and the other of said positions, and a locking pin suitable for to be engaged in these holes, this nipple being associated with a spring allowing its mobility between an engagement position in these holes and a release position relative to these holes.

[0021] According to an alternative embodiment, the grip handle is mounted pivoting, in particular at its base, on the body of the machine, so as to be able to pivot between an unfolding position, in which it is erect and able to be grasped by a child riding the machine, and a position folding, in which it is lowered so as to be located near the front of the body of the machine, fixing means being provided to maintain the handle at least in said unfolding position.

[0022] With the same aim of reducing the bulk of the assembly according to the invention when not in use, the body of the machine can be divided transversely into two parts, namely a front part and a rear part, these parts being connected to each other in a pivoting manner, this pivoting allowing mobility of said rear part relative to the front part between an unfolded position of use, in which the rear part extends away from said front part, and a folded storage position, in which the rear part is folded towards the front part along the lower side of this front part.

[0023] According to an improved embodiment of the invention, the set of elements comprises means for positioning the rear wheels of the machine in two spacing positions, namely a position of greatest spacing, which is adopted in the "stroller" configuration of said set of elements, and a position of smaller spacing, which is adopted when the wheeled machine is used as such or when the set of elements is in the state of folding.

[0024] The larger spacing of the rear wheels makes it possible to give great stability to the stroller, while the smaller spacing of these same wheels allows the child to use the wheeled machine in a way that is not possible. not constrained by excessive spacing of the rear wheels.

[0025] Preferably, the driving handle comprises, at its lower part and on its rear side, a strut connected to a locking block, this block being intended to come into engagement with the body of the machine and allowing thus locking the handle on the body, in the unfolding state of this handle.

[0026] A stable and resistant positioning of the driving handle relative to the machine is thus obtained.

[0027] The invention will be better understood by means of the description which follows, made with reference to the appended schematic drawing, this drawing showing, by way of non-limiting example, a possible embodiment of the set of modular elements concerned.

In this drawing,

[Fig. 1] Figure 1 is a perspective view of the set of elements in a "stroller" configuration, from a first angle of view;

[Fig. 2] Figure 2 is a perspective view in this same configuration, from a second angle; [Fig. 3] Figure 3 is a view similar to Figure 1 but with the removal of different canvas parts of the stroller seat, assembled together, namely a seat canvas, a backrest canvas, a footrests and side canvases, and also with the removal of a sun hood and a safety harness that the stroller includes;

[Fig. 4] Figure 4 is a view similar to Figure 2, with the same erasures as in Figure 3;

[Fig. 5] Figure 5 is a view of the set of elements similar to Figure 3, in a folded state of a seat that comprises the stroller seat;

[Fig. 6] Figure 6 is a perspective view of the child's wheeled machine that includes said set of elements;

[Fig. 7] Figure 7 is a view of the set of elements in a folded state;

[Fig. 8] Figure 8 is a detailed view, on an enlarged scale and in section, of a pivoting connection connecting a lower part of a branch of the stroller driving handle and an upper part of this branch;

[Fig. 9] Figure 9 is a detailed view, on an enlarged scale and in section passing through the axis of one of the ends of an upper bar which includes a grip handle carried by the wheeled machine, and showing the the seat of the stroller rests on this grab handle;

[Fig. 10] Figure 10 is a detailed view, on an enlarged scale and in section, of a mounting assembly of one of the branches of the stroller driving handle on the body of the wheeled machine;

[Fig. 11] Figure 11 is a detailed view, on an enlarged scale and in section passing through a locking block making it possible to lock the driving handle of the stroller in the upright position, said block being in engagement with the body of the machine;

[Fig. 12] Figure 12 is a view similar to Figure 11, in a disengagement position of said block relative to the body of the machine;

[Fig. 13] Figure 13 is a detailed view on an enlarged scale of a lower part of a gripping handle that comprises the wheeled machine, in section passing through the median plane of this handle;

[Fig. 14] Figure 14 is a detailed view, on an enlarged scale and in section passing through the axis of the rear axle of the machine and passing through a median plane of a rear part of the body of the machine, in a spacing position for the rear wheels of the machine;

[Fig. 15] Figure 15 is a view similar to Figure 14, in a position where the rear wheels of the machine are brought together;

[Fig. 16] Figure 16 is a detailed view, on an enlarged scale and in section in a front-rear direction of the machine, of one of the two mechanisms for controlling the rapprochement or the spacing of the rear wheels, in a lock position,

[Fig. 17] Figure 17 is a view similar to Figure 16, said mechanisms being in an unlocking position, and

[Fig. 18] Figure 18 is a side view of the set of elements according to another embodiment, showing an unfolded position of this set in solid lines and a partially folded position of this set in broken lines.

[0028] Figures 1 and 2 represent a set of modular elements allowing, in the assembly configuration of the elements shown by these figures, to constitute a stroller 2, and, in another configuration shown by Figures 5 and 6, to obtain a wheeled machine 3 capable of being ridden by a child.

The set of elements comprises (i) a subassembly 5, 6, formed by a stroller seat 5 and a stroller driving handle 6, and (ii) the wheeled machine 3, which constitutes the rolling chassis of the stroller 2.

[0030] Description of seat 5

The seat 5 of the stroller 2 comprises a seat 10 and a backrest 11, as well as, in the example shown, a front part 12 forming a footrest, and a sunshade hood 13.

[0032] As can be understood with reference to Figures 3 and 4 in comparison with Figures 1 and 2, these different seat parts 10 to 12 include assembled canvas pieces, carried by support structures 15, 25, 26, these pieces of canvas being erased in Figures 3 and 4 in order to make these support structures visible. The sunshade hood 13 is also erased in these Figures 3 and 4.

[0033] It thus appears that the seat 10 comprises, in addition to the piece of canvas, a plate 15 having two side cheeks on its rear part, by which the seat 10 is pivotally mounted on the driving handle 6. This pivoting assembly is produced at the level of pivoting connections 16 which connect lower parts 6a of the side branches of the handle 6 to upper parts 6b of these same branches. One of the connections 16 is more particularly visible in section in Figure 8; it appears that each side cheek 15a of the plate 15 is connected to one of the two parts forming the connection 16 by means of a screw 17, in a pivoting manner.

The side cheeks 15a make it possible to offset the seat plane formed by the plate 15 relative to the pivot axes formed by the connections 16; as is visible in Figure 7, in the folded position, the lower parts 6a and upper 6b extend along the lateral sides of the body 21 of the machine 3, with the connections 16 located near the front wheels of the 'engine 3; said offset allows, in this folded state, the seat 10 to come over the body 21 of the machine 3. The set of elements thus has a reduced footprint.

[0035] The pivoting of the seat 10, and therefore the plate 15, relative to the handle 6 is made between a state of unfolding with respect to this handle, visible in Figures 1 to 4, in which the seat 10 is capable of receiving a child, and a state of folding, visible in Figure 5, in which the plate 15 is raised, thus being close to the handle 6. It also appears that the plate 15 is dimensioned so as to, in said unfolding position, come to rest against an upper transverse bar which includes a grip handle 20 located on the front part of the body 21 of the machine 3. As is more particularly visible in Figure 9, the plate 15 has side walls 15b covering these ends of the upper bar 20a of the handle 20, which are crossed by screws 22 of assembly of the plate 15 to the upper bar 20a. Each screw 22 is received by screwing into the threaded hole of a socket 23 housed inside the end of the bar 20a.

The backrest 11, in addition to the piece of canvas which is specific to it, includes a hoop 25 forming a support frame for this piece of canvas. As can be seen in Figure 8, the arch 25 is mounted on the connection 16 by the same screw 17 as that used for mounting the cheek 15a of the plate 15. When the seat 10 is unfolded and connected to the bar upper 20a as described above, the backrest 11 is held in position by the side canvas pieces which connect the seat canvas piece 10 to the backrest canvas piece 11.

[0037] The front part 12 which forms a footrest also includes, in addition to the piece of canvas which is specific to it, a hoop 26 for supporting this piece of canvas. This arch 12 is pivotally mounted on the front of the seat 10, this pivoting being, in the example shown, carried out by means of rounded parts 26a formed at the ends of the arch 26, which are pierced with shoulder holes, these holes receiving the screws 22 as shown in Figure 9.

The sunshade hood 13 is, for its part, of the classic type and is not part of the invention; it therefore does not need to be particularly described.

[0039] Description of the driving handle 6

This handle 6, in addition to the aforementioned lower parts 6a and upper parts 6b, comprises an upper arch 6c connected to said upper parts 6b by assembly connections 30 similar to the connections 16. The handle 6 thus has the shape of a handle elongated, forming an upper arch and two lateral branches.

With reference to Figure 8, it appears that each connection 16 is formed by two parts connected by a screw 31, these parts being respectively connected to the respective parts 6a, 6b; one of the two parts (the one on the left in Figure 8) has a projecting prismatic part 32 at the level of its assembly face to the other part, which is able to be received in an adjusted manner in a cavity of corresponding shape that said other piece presents. It can be understood that, when the screw 31 is tightened, the prismatic part 32 is kept engaged in said cavity, which ensures that the two parts are immobilized in rotation. forming the connection 16 relative to each other. This pivoting locking position corresponds to the maintenance of the upper part 6b in the extension of the corresponding lower part 6a, therefore in the unfolding state of the handle 6. When the screw 31 of each connection 16 is loosened, said prismatic part 32 can be released from said cavity, which allows the upper part 6b to pivot relative to the lower part 6a, making it possible to fold the handle 6.

As appears by comparison of Figures 1 to 4 and 6, the handle 6 is removably mounted on the body 21 of the machine 3, so that said subassembly 5, 6 can be removed from this machine . The machine 3 can then be used for the amusement of a child, the latter coming to ride the body 21 by sitting on a saddle 21a formed on the upper part of this body 21, and coming to grasp the upper bar 20a of the handle 20.

The removable mounting of the handle 6 on the body 21 is carried out by means of pivoting assembly links 35, one of which is more particularly visible in Figure 10. As appears in this figure, each link 35 comprises a base 36 receiving the lower part 6a, this base being pivotally mounted in a bearing formed by the body 21 and being retained on this body by means of a screw 37. The lower part 6a is received in an adjusted manner in a corresponding hole formed by the base 36, and is retained in this hole by means of a movable pin 38 associated with a leaf spring 39. This pin 38 passes through a hole in the part 6a and a hole in the base 36 to ensure retention of the part 6a on the base 36, and is able to be pressed against the elastic force of the spring 39 so as to release the part 6a relative to the base 36.

[0044] As can be seen in Figures 2 and 4, the handle 6 further presents, at its lower part and on its rear side, a strut 40 connected to a locking block 41 making it possible to lock the handle 6 on the body 21, in the unfolded state of this handle. In the locked state, this block 41 engages between two parallel branches that form the rear part of the body 21 and is engaged with these two branches. Block 41 is more particularly visible in Figures 11 and 12; as appears in these figures, the block 41 is in the form of a housing connected to the two lateral parts 40a of the strut and has a push button 42 on its upper part, capable of being pressed into the housing by a user , this push button 42 being associated with two springs 43 which return it to the extended position. The push button 42 forms two studs 42a whose free ends have inclined surfaces so as to form actuation ramps. Each of these free ends is located near an actuating rim presented by a corresponding sliding latch 44, this latch 44 having one end which passes through the corresponding side wall of the housing and which forms a locking pin. This nipple is capable of being received in a locking cavity 45 corresponding arranged in one of the aforementioned parallel branches 21b formed by the rear part of the body 21. The two latches 44 are returned to the locking position by a spring 46 extending between them.

[0045] As can be understood in comparison with Figures 11 and 12, from the locking position shown in Figure 11, pressing the push button 42 will cause the aforementioned actuation ramps to bear against the edges of actuation of the latches 44, leading to the retraction of these latches towards the inside of the housing and therefore to the extraction of the locking pins from the cavities 45 of the branches 21b. The pivoting of the driving handle 6 relative to the body 21 of the machine is then released, which makes it possible to bring this handle to the folded state. To lock the block 41 on the body 21, it is sufficient, from the position shown in Figure 12, to engage the block 41 between the branches 21b; rounded portions of the branches 21b around the cavities 45 and corresponding rounded portions arranged at the ends of the locking pins come to bear against each other during this engagement so as to cause the latches 44 to retract inside the housing, against the elastic force of spring 46, until said pins are opposite the cavities 45, in which they then engage under the bias of spring 46.

[0046] Description of machine 3

By comparing Figures 6 and 7, it can be seen that the grip handle 20 is able to be placed in two vertically stepped positions, namely a lowered position visible in Figure 7, for storage, and a raised position , visible in Figure 6, allowing the handle 20 to be placed at the appropriate height for its grasp by a child riding the body 21 of the machine 3. The lowered position makes it possible to reduce the bulk of the set of elements in the storage or transport position shown in Figure 7.

[0048] As appears more particularly in Figure 13, the handle 20 comprises a column 20b whose lower part forms a tubular portion 20b 1, and the body 21 forms a tubular extension 21c in which said portion 20b is telescopically received 1. The latter and the extension 21c comprise respective holes which coincide with each other in one and the other of said lowered and raised positions of the handle 20. A locking pin 50 is able to be engaged in these holes, this pin being associated with a leaf spring 51 allowing the mobility of the pin 50 between a position of engagement in the holes in coincidence, allowing the blocking of the handle 20 relative to the body 21, and a position of clearance of the pin 50 relative to these same holes, allowing telescopic sliding of the column 20b relative to the extension 21c.

[0049] Furthermore, the comparison of Figures 1 to 4 with Figures 6 and 7 allows us to see that the rear wheels of the machine 3 are capable of being placed in two spacing positions, namely a position of greater spacing, visible in Figures 1 to 4, which is adopted in the "stroller" configuration, and a position of smaller spacing, visible in Figures 6 and 7, which is adopted when the machine 3 is used by the child or when the set of elements is in the folded state. The greater spacing of the rear wheels makes it possible to give great stability to the stroller 2, while the smaller spacing of these same wheels allows the child to use the machine 3 in a way which is not constrained by excessive spacing of the rear wheels, and allows compact folding of said set of elements.

This spacing is controlled by means of two cursor buttons 52 located on the rear part of the body 21, visible in Figures 2 and 4.

[0051] Figures 14 to 17 show more particularly the mechanisms of which the buttons 52 are part. As visible in Figures 16 and 17, these buttons 52 are integral with locking rods 55; it appears in these figures and in Figures 14 and 15 that ends in the form of locking pins of these rods 55 are able to come into engagement in corresponding receiving cavities arranged in a bar 56 and a tube 57 engaged telescopically one in the other, this bar 56 and this tube 57 forming the axle of the rear wheels 60 of the machine 3. The locking rods 55 are biased by springs 58 in locking positions corresponding to the engagement of said pins in said receiving cavities.

[0052] With reference to Figures 14 and 15, it is understood that from the position of spacing of the rear wheels 60 shown in Figure 14, an action on the cursor buttons 52 against the elastic force exerted by the springs 58 on the locking rods 55 makes it possible to extract said nipples from the corresponding receiving cavities and therefore to release the sliding of the bar 56 and the tube 57 relative to each other. This sliding can be carried out until bringing the wheels 60 into the rapprochement position shown in Figure 15, position in which the locking pins are engaged in other corresponding receiving cavities, which makes it possible to maintain the wheels 60 in this position of rapprochement. To return to the spacing position, an action on the cursor buttons 52 is exerted so as to release the locking pins from these said other receiving cavities in order to return the bar 56 and the tube 57 to said wheel spacing position 60.

[0053] Figure 18 is a view of the set of elements according to another embodiment, in which the body of the machine 3 is divided transversely into two parts 3a, 3b, namely a front part 3a and a rear part 3b, these parts being connected to each other in a pivoting manner, by a connection 65 forming a pivot axis hinge transverse to the body of the machine 3. The pivoting made possible by this connection allows mobility Of the game rear 3b relative to the front part 3 a between an unfolded position of use, shown in solid lines, in which the rear part 3b extends away from said front part 3 a, and a partially folded, storage position, shown in broken lines, in which the rear part 3b is folded towards the front part 3a along the lower side of this front part 3a. The folded position shown in broken lines is a position of complete folding of part 3b but is a partial folding position in the sense that the driving handle, the grip handle and the seat, as shown, are not folded .

[0054] It appears from the above that the invention provides a set of modular elements which overcomes the disadvantages of the prior technique by making it possible to move from the "stroller" configuration to the "machine" configuration simply and quickly, by allowing the stroller to be folded into a reduced volume in order to facilitate the storage or transport of this assembly when not in use, and by allowing the stability required for the stroller to be obtained without limiting the possibilities of use of the stroller machine by the child nor increase the volume occupied by the set of elements in the folded state.

Claims

[Claim 1] Set of modular elements allowing, depending on the assembly configuration of the elements, either to constitute a stroller (2), or to obtain a wheeled vehicle (3) capable of being ridden by a child, characterized in what it includes:

- a subassembly (5,6) formed by a stroller seat (5) and by a stroller steering handle (6), the seat (5) comprising a seat (10) and a backrest (11), the the seat (10) being connected to the driving handle (6) while being movable relative to this handle, this mobility taking place between a state of unfolding relative to the handle (6), in which the seat (10) is capable of receiving a child, and a folded state, in which this seat (10) is close to the handle (6), extending along it;

- a wheeled machine (3) for a child, which forms the chassis and the wheels of the stroller (2) in the "stroller" configuration, this machine (3) comprising a body (21) capable of being ridden by a child, this body (21) comprising, at its front part, a grip handle (20) capable of being grasped by a child riding said body (21), and comprising means (35) for mounting the driving handle (6) on this body (21); the seat (10) is dimensioned so as to, in said unfolded position, come to rest on said grip handle (20), thus allowing stable support of the seat (10) by this grip handle

(20); in said folded state, the seat (10) allows the part (21a) of the machine (3) intended to be ridden by a child to be released.

[Claim 2] Assembly according to claim 1, characterized in that said means (35) for mounting the driving handle (6) on the body

(21) of the machine (3) are designed to allow removable mounting of said seat (5)/driving handle (6) sub-assembly.

[Claim 3] Assembly according to claim 1 or claim 2, characterized in that it comprises means (15b, 22, 23) for connecting the seat (10) to said grip handle (20).

[Claim 4] Assembly according to claim 3, characterized in that

- the grip handle (20) is in the shape of a "T", that is to say it has an upper bar (20a) forming the equivalent of a "handlebar", this upper bar (20a) comprising first connecting means (23) at its ends, and

- the seat (10) has lateral parts (15b) capable of covering these ends of the upper bar (20a) and has, at the level of these lateral parts, second connecting means (22) capable of engaging with said first connecting means to connect the seat (10) to the grip handle (20).

[Claim 5] Assembly according to one of claims 1 to 4, characterized in that

- said driving handle (6) has lower parts (6a) connected to upper parts (6b) by pivoting connections (16), these pivoting connections (16) allowing the driving handle (6) to be placed either in an unfolding state, for driving the stroller (2), or in a folding state, in which said lower (6a) and upper (6b) parts are placed in a position close to the body (21) of the wheeled machine (3), along the lateral sides of this body (21); And

- the seat (10) is pivotally connected to said pivoting connections (16) via mounting foils (15a) which offset the plane formed by the seat (10) relative to the pivot axes formed by the connections pivoting (16), this offset allowing the seat (10) to come over the body (21) of the machine (3) in said folded state.

[Claim 6] Assembly according to one of claims 1 to 5, characterized in that said grip handle (20) is capable of being placed in two vertically stepped positions, namely a lowered position, making it possible to reduce the bulk of the set of elements out of use, and a raised position, making it possible to position the gripping handle (20) at a height suitable for gripping this handle by the child riding the machine (3).

[Claim 7] Assembly according to claim 6, characterized in that said grip handle (20) comprises a column (20b) forming a tubular portion (20b 1) while the body (21) of the machine (3) forms a tubular extension (21c) receiving this tubular portion telescopically, and comprises immobilizing means (50, 51) making it possible to immobilize said tubular portion (20b 1) and said tubular extension (21c) relative to each other the other in one or the other of the two aforementioned positions of the grip handle (20).

[Claim 8] Assembly according to one of claims 1 to 7, characterized in that it comprises means (52 to 58) for positioning the rear wheels (60) of the machine (3) in two spacing positions , namely a position of greater spacing, which is adopted in the "stroller" configuration of said set of elements, and a position of smaller spacing, which is adopted when the wheeled machine (3) is used as a such or that the set of elements is in the folded state.

[Claim 9] Assembly according to one of claims 1 to 7, characterized in that the driving handle (6) comprises, at its lower part and on its rear side, a strut (40) connected to a locking block (41), this block (41) being intended to come into engagement with the body (21) of the machine (3) and thus making it possible to lock the handle (6) on the body (21), in the unfolded state of this handle.