CN119677661A - Modular components that can be used to build strollers and wheeled vehicles - Google Patents

Abstract

The invention relates to an assembly of modular elements which allows to construct a child stroller (2) or to obtain a wheeled vehicle (3) suitable for being ridden by a child. The assembly comprises: a seat (5)/stroller handle (6) subassembly, the floor plate (15) of the seat (5) being connected to the stroller handle (6) while being movable relative to the stroller handle (6) between an unfolded state and a folded state; and a wheeled vehicle (3) forming the chassis and wheels of the child stroller (2) in the "stroller" configuration, wherein the plate (15) is dimensioned so that in the unfolded position it rests on a grip handle (20) included in the vehicle (3), and in the folded state it clears the portion of the vehicle (3) intended for being ridden by a child.

Description

Modular assembly capable of forming a stroller and a wheeled vehicle

Technical Field

The present invention relates to a modular element assembly allowing to construct a stroller or to obtain a wheeled vehicle suitable for being ridden by a child, depending on the configuration of said element assembly.

Background

It is very useful for parents to have a stroller to transport a child (e.g., from home to kindergarten) and a wheeled vehicle (so that the child can play with the vehicle after reaching the kindergarten) in a short period of time.

At present, the child cart and the child wheeled vehicle are separate articles and can be used alternatively. Thus, when a child is transported by a child cart, the parent must carry a wheeled vehicle, which is a not insignificant burden in view of the weight and bulk of such vehicles.

Disclosure of Invention

There is no satisfactory solution on the market today to cope with this problem, and the main object of the present invention is to provide a solution that provides an element assembly as described above to allow a simple and quick transition from the "child stroller" configuration to the "vehicle" configuration.

It is a further object of the present invention to provide an element assembly as described above to enable a child stroller to be folded into a smaller volume to facilitate storage or transport of the assembly when not in use.

It is yet another object of the present invention to provide an element assembly as described above that allows a child stroller to maintain a desired stability without limiting the possibility of the child using the vehicle and without increasing the volume occupied by the element assembly in the collapsed condition.

In order to achieve at least the above main object, an element assembly according to the present invention includes:

A sub-assembly formed by a child stroller seat and a child stroller handle, the seat comprising a base and a backrest, the base being connected to the stroller handle and being movable relative to the stroller handle between an unfolded state relative to the stroller handle in which the base is adapted to receive a child and a folded state in which the base extends adjacent to and along the handle, and

A wheeled vehicle for children forming a chassis and wheels of a stroller in a "stroller" configuration, the vehicle comprising a body adapted to be ridden by a child, the body comprising a grip handle at a front portion thereof adapted to be gripped by a child riding the body, and means for mounting the stroller handle to the body, wherein,

The base is sized to rest on the grip handle in an unfolded state so that the grip handle stably supports the base, and in the folded state, the base is clear of a portion of the vehicle for riding by a child.

It is understood that the wheeled vehicle is integrated into the stroller as a rolling chassis of the stroller. In this way, when a parent is transporting a child with a child cart and also wants to have a wheeled vehicle that can be entertained by the child, the wheeled vehicle does not have to be carried separately.

In its extended position, the base may receive a child in a stable and secure manner, and in its collapsed position, the child may ride on the vehicle and be pushed by the parent through the stroller handle.

The seat/trolley handle subassembly may not be detachable with respect to the body of the vehicle, which however results in the disadvantage that a child can only play with the seat/trolley handle subassembly mounted on the wheeled vehicle and thus has a certain volume and weight, and that the means for mounting the trolley handle to the body of the vehicle are therefore preferably designed to allow detachable mounting of the seat/trolley handle subassembly.

Thus, the subassembly may be detachable with respect to the wheeled vehicle, allowing the child to own a vehicle that includes only the body, wheels, and grip handles.

The base may simply rest on the grip handle, however, preferably, in order to prevent any risk of the base accidentally moving in some circumstances, in particular in the event of the child stroller tipping over, the element assembly comprises means for connecting the base to the grip handle.

In this case, according to one possibility,

The grip handle is T-shaped, i.e. has an upper bar forming a "grip", said upper bar comprising first connecting means at its ends, and

-The base has a side portion capable of covering the end of the upper rod and at said side portion there is a second connection means capable of engaging with the first connection means to effect the connection of the base with the grip handle.

The first connection means in question may for example consist of a threaded hole arranged in the end of the upper rod, and the second connection means then consist of a screw which can be passed through the side of the base and screwed into said hole.

According to a preferred embodiment of the present invention,

The trolley handle has a lower part connected to an upper part by a pivot connection allowing the trolley handle to be placed in an unfolded state for pushing the child trolley or in a folded state in a position close to the body along the side of the body of the wheeled vehicle, and

-The base is pivotally connected to the pivot connection by a mounting tab that deflects a plane formed by the base relative to a pivot axis formed by the pivot connection, the deflection allowing the base to cover the body of the vehicle in the folded state.

The element assembly according to the invention can thus have a reduced volume in this folded position, thereby facilitating storage or transport.

Preferably, the grip handles are positionable in two vertically staggered positions, a lowered position allowing for reduced footprint of the element assembly when not in use, and a raised position allowing for positioning the grip handles at a height suitable for gripping by a child riding the vehicle.

This arrangement allows for a further reduction in the volume occupied by the component assembly when not in use.

In this case, according to one possible embodiment of the invention, the gripping handle comprises a post forming a tubular portion, while the body of the vehicle forms a tubular extension that receives the tubular portion in a telescopic manner, and comprises fixing means allowing to fix the tubular portion and the tubular extension in either of the two positions of the gripping handle with respect to each other.

These fixing means may in particular comprise respective holes of the tubular portion and the tubular extension, which holes coincide with each other in either of two said positions, and locking pins engageable in these holes, which pins are associated with springs allowing them to move between a position of engagement in these holes and a position of disengagement with respect to these holes.

According to an alternative embodiment, the gripping handle is in particular pivotally mounted on the main body at its base so as to be pivotable between an unfolded position in which the gripping handle stands up and can be gripped by a child of the ride-on vehicle, and a folded position in which the gripping handle is lowered to lie adjacent the front of the main body, there being provided fixing means for holding the handle at least in the unfolded position.

For the same purpose of reducing the footprint of the assembly according to the invention when not in use, the body of the vehicle may be divided laterally into two parts, a front part and a rear part, which parts are connected to each other in a pivoting manner allowing the rear part to be moved relative to the front part between an unfolded use position in which the rear part extends away from the front part and a folded storage position in which the rear part is folded along the underside of the front part towards the front part.

According to a modified embodiment of the invention, the element assembly comprises means for positioning the rear wheel of the vehicle in two spaced positions, a larger spaced position adopted in the "stroller" configuration of the element assembly and a smaller spaced position adopted when used alone as the wheeled vehicle or when the element assembly is in the folded state.

The larger spacing of the rear wheels provides high stability to the stroller, while the smaller spacing of these same wheels allows the child to use the wheeled vehicle without being limited by the excessive spacing of the rear wheels.

Preferably, the trolley handle comprises a post at its lower and rear side connected to a locking block for engagement with the body of the vehicle, allowing the trolley handle to be locked to the body in its deployed state.

A stable and secure positioning of the trolley handle relative to the vehicle is thereby obtained.

Drawings

The invention will be clearly understood by the following description with reference to the accompanying schematic drawings, which show by way of non-limiting example possible embodiments of the modular element assembly in question.

In the drawings of which there are shown,

FIG. 1 is a perspective view of an element assembly in a "stroller" configuration at a first viewing angle;

FIG. 2 is a perspective view at a second angle of the same configuration;

FIG. 3 is a view similar to FIG. 1, but with the various fabric pieces of the stroller seat assembled together, namely the seat fabric, back rest fabric, footrest fabric and side fabric, removed, with the sunshade and seat belt included in the stroller also removed;

FIG. 4 is a view similar to FIG. 2 with the same removed portions as in FIG. 3;

FIG. 5 is a view similar to FIG. 3 of the component assembly in a collapsed condition of a base included in the child stroller seat;

FIG. 6 is a perspective view of a child wheeled vehicle included in the component assembly;

FIG. 7 is a view of the component assembly in a folded state;

FIG. 8 is an enlarged cross-sectional detail view of a pivot connection connecting a lower portion of a leg of a stroller handle and an upper portion of the leg;

FIG. 9 is an enlarged cross-sectional detail view through an axis of one end of an upper bar including a grip handle carried by the wheeled vehicle and showing the base of the child stroller seat resting on the grip handle;

FIG. 10 is an enlarged cross-sectional detail view of an assembly for mounting one leg of a stroller handle of a stroller to a body of a wheeled vehicle;

FIG. 11 is an enlarged cross-sectional detail view through a lock block that allows the stroller handle to be locked in an upright position, the lock block engaged with the body of the vehicle;

FIG. 12 is a view similar to FIG. 11 in a disengaged position of the locking block relative to the body of the vehicle;

FIG. 13 is an enlarged cross-sectional detail view of a lower portion of a gripping handle included with the wheeled vehicle through a median plane of the handle;

FIG. 14 is an enlarged cross-sectional detail view through the axis of the rear axle of the vehicle and through the median plane of the rear of the body of the vehicle in a position in which the rear wheels of the vehicle are spaced apart a distance;

FIG. 15 is a view similar to FIG. 14, in a position where the rear wheels of the vehicle are in close proximity;

FIG. 16 is an enlarged cross-sectional detail view in the fore-aft direction of the vehicle with one of two mechanisms for controlling the close-up or remote separation of the rear wheels in a locked position;

FIG. 17 is a view similar to FIG. 16 with the mechanism in an unlocked position, and

Fig. 18 is a side view of an element assembly according to another embodiment, showing the unfolded position of the assembly in solid lines and showing the incompletely folded position of the assembly in broken lines.

Detailed Description

Fig. 1 and 2 show a modular element assembly which in the element assembly configuration shown in these figures allows to construct a stroller 2 and in another configuration shown in fig. 5 and 6 allows to obtain a wheeled vehicle 3 suitable for being ridden by a child.

The component assembly comprises (i) a sub-assembly 5,6 formed by a child stroller seat 5 and a child stroller handle 6, and (ii) a wheeled vehicle 3 constituting the rolling chassis of the child stroller 2.

Description of the seat 5

The seat 5 of the child pushchair 2 comprises a base 10 and a backrest 11, and in the example shown a front portion 12 forming a footrest and a sunshade 13.

As can be appreciated with reference to fig. 3 and 4 and in comparison to fig. 1 and 2, the different seat portions 10 to 12 comprise assembled fabric pieces carried by support structures 15, 25, 26, which are removed in fig. 3 and 4 to make the support structures visible. In fig. 3 and 4, the sunshade 13 is also removed.

It can thus be seen that in addition to the fabric piece, the base 10 comprises a plate 15, which plate 15 has two side cheeks at its rear, by means of which the base 10 is pivotally mounted on the trolley handle 6. The pivotal mounting is located at a pivotal connection 16, which pivotal connection 16 connects the laterally branched lower portions 6a of the trolley handle 6 to the equally branched upper portions 6b. One of the links 16 is more particularly visible in the section of fig. 8, it being seen that each cheek 15a of the plate 15 is pivotally connected to one of the two parts forming the link 16 by means of a screw 17.

The cheeks 15a allow the plane of the base formed by the plate 15 to be offset with respect to the pivot axis formed by the connection 16, as shown in fig. 7, in the folded position, the lower portion 6a and the upper portion 6b extend along the sides of the body 21 of the vehicle 3, with the connection 16 being located in the vicinity of the front wheels of the vehicle 3, said offset allowing the base 10 to cover the body 21 of the vehicle 3 in this folded condition. Thus, the component assembly has a reduced footprint.

The pivoting of the base 10 and thus the plate 15 with respect to the trolley handle 6 takes place between an unfolded state (visible in fig. 1 to 4) and a folded state (visible in fig. 5) with respect to the trolley handle. In the unfolded state the base 10 can receive a child and in the folded state the plate 15 is raised so as to be close to the trolley handle 6. It can also be seen that the plate 15 is dimensioned such that, in the deployed position, the plate 15 abuts against a top rail comprising a gripping handle 20 on the front of the body 21 of the vehicle 3. As can be seen more particularly in fig. 9, the plate 15 has a side wall 15b covering the end of the upper rod 20a of the handle 20, through which a screw 22 for assembling the plate 15 to the upper rod 20a passes. Each screw 22 is received by screwing into a threaded hole of a sleeve 23 housed in the end of the rod 20 a.

In addition to its exclusive piece of fabric, the backrest 11 also includes an arch 25 forming a support frame for the piece of fabric. As shown in fig. 8, the arch 25 is mounted on the connector 16 by the same screw 17 as the screw for mounting the cheek 15a of the plate 15. When the base 10 is unfolded and connected to the upper rod 20a as described above, the backrest 11 is held in place by the lateral fabric pieces, which connect the fabric pieces of the base 10 to the fabric pieces of the backrest 11.

The front portion 12 forming the footrest comprises, in addition to its exclusive piece of fabric, an arch 26 for supporting this piece of fabric. The arch 12 is pivotally mounted on the front of the base 10, in the example shown, by a circular portion 26a formed at the end of the arch 26, the circular portion 26a being drilled with stepped holes that receive the screws 22, as shown in fig. 9.

The sunshade 13 is of conventional type in itself and is not part of the present invention and therefore does not require special explanation.

Description of the handle 6 of the barrow

In addition to the lower portion 6a and the upper portion 6b described above, the trolley handle 6 also includes an upper arch 6c that is connected to the upper portion 6b by a fitting connection 30 similar to the connection 16. The trolley handle 6 thus has the shape of an elongated handle, forming an upper arch and two lateral branches.

Referring to fig. 8, it can be seen that each connecting piece 16 is formed of two parts connected by screws 31, which are connected to the respective parts 6a, 6b, respectively, one of the two parts (the one on the left in fig. 8) having a protruding prismatic part 32 on its assembly face with the other part, which prismatic part 32 can be received in a mating manner in a correspondingly shaped cavity provided in the other part. It will be appreciated that when the screw 31 is tightened, the prismatic portion 32 remains engaged in the cavity, which ensures the fixation in the rotational direction of the two parts forming the connection 16 with respect to each other. This pivot locking position corresponds to the upper portion 6b being held in an extension of the corresponding lower portion 6a and thus in the unfolded state of the trolley handle 6. When the screw 31 of each connector 16 is loosened, the prismatic portion 32 can be released from the cavity, which allows the upper part 6b to pivot with respect to the lower part 6a, allowing the trolley handle 6 to fold.

As can be seen from a comparison of fig. 1 to 4 and 6, the trolley handle 6 is detachably mounted on the body 21 of the vehicle 3 so that the subassemblies 5, 6 can be detached from the vehicle. The vehicle 3 can then be used for the amusement of a child riding on the main body 21 by sitting on the saddle 21a formed at the upper part of the main body 21 and grasping the upper rod 20a of the handle 20.

The removable mounting of the trolley handle 6 on the body 21 is achieved by means of pivotally mounted links 35, one of which is more particularly visible in fig. 10. As shown in this figure, each connector 35 comprises a base 36 receiving the lower portion 6a, which is pivotally mounted in a support formed by the body 21 and retained on the body by means of screws 37. The lower portion 6a is received in a cooperating manner in a corresponding hole formed by the base 36 and is held therein by a movable pin 38 associated with a leaf spring 39. The pin 38 passes through a hole in the lower part 6a and a hole in the base 36 to ensure that the lower part 6a is held on the base 36 and can be pressed against the spring force of the leaf spring 39 to release the lower part 6a relative to the base 36.

As shown in fig. 2 and 4, the trolley handle 6 also has a post 40 at its lower part and at its rear side connected to a locking block 41, allowing the trolley handle 6 to be locked to the body 21 in its unfolded state. In the locked state, the locking block 41 is engaged between and with two parallel branches formed by the rear of the main body 21. The locking block 41 is more particularly visible in figures 11 and 12, as shown in these figures, the locking block 41 is in the form of a housing connected to two sides 40a of the support column and comprises, in its upper part, a button 42 adapted to be pushed into the housing by a user, the button 42 being associated with two springs 43 which return it to the extended position. The button 42 forms two posts 42a with inclined surfaces at their free ends to form an actuation ramp. Each of these free ends is located adjacent to an actuation flange of a corresponding sliding latch 44, the latch 44 having an end passing through a corresponding side wall of the housing and forming a locking pin. The pin may be received in a corresponding locking cavity 45, which locking cavity 45 is arranged in one of the above-mentioned parallel branches 21b formed by the rear of the body 21. The two latches 44 are returned to the locked position by springs 46 extending therebetween.

As can be appreciated by comparing fig. 11 and 12, from the locking position shown in fig. 11, pressing the button 42 will bring the above-mentioned actuation ramp against the actuation flange of the latches 44, causing these latches to retract towards the inside of the housing and thus withdrawing the locking pin from the cavity 45 of the branch 21 b. The pivoting of the trolley handle 6 relative to the body 21 of the vehicle is then released, which allows the trolley handle to enter the folded state. To lock the locking block 41 to the body 21, it is sufficient to engage the locking block 41 between the branches 21b, starting from the position shown in fig. 12, during which engagement the rounded portion of the branch 21b close to the cavity 45 and the corresponding rounded portion arranged at the end of the locking pin abut against each other, so as to retract the latch 44 into the housing against the elastic force of the spring 46 until the pin is in a position opposite the cavity 45, and they are then engaged in the cavity 45 under the pressure of the spring 46.

Description of vehicle 3

By comparing fig. 6 and 7, it can be seen that the gripping handle 20 can be placed in two vertically staggered positions, namely a lowered position for storage, visible in fig. 7, and a raised position, visible in fig. 6, which allows the gripping handle 20 to be placed at a sufficient height for gripping by a child riding on the body 21 of the vehicle 3. The lowered position allows for reduced footprint of the component assembly in the storage or shipping position shown in fig. 7.

As shown more particularly in fig. 13, the handle 20 comprises a post 20b, the lower portion of which forms a tubular portion 20b 1, and the body 21 forms a tubular extension 21c in which the tubular portion 20b 1 is telescopically received. The latter and the extension 21c comprise respective holes coinciding with each other in the lowered and raised position of the handle 20. The locking pin 50 can be engaged in these holes, which pin is associated with a leaf spring 51, allowing the pin 50 to move between an engaged position in the coinciding holes, which allows the handle 20 to be locked with respect to the body 21, and a disengaged position of the pin 50 with respect to these same holes, which allows the post 20b to slide telescopically with respect to the extension 21 c.

Furthermore, a comparison of fig. 1 to 4 with fig. 6 and 7 shows that the rear wheels of the vehicle 3 can be placed in two spaced apart positions, namely a larger spacing position, which is employed in the "stroller" configuration, seen in fig. 1 to 4, and a smaller spacing position, which is employed in fig. 6 and 7, when the child uses the vehicle 3 or when the component assembly is in a folded state. The larger spacing of the rear wheels provides high stability to the stroller 2, while the smaller spacing of these same wheels allows the child to use the vehicle 3 in a manner that is not limited by the excessive spacing of the rear wheels and allows for compact folding of the component assembly.

The spacing is controlled by two sliding buttons 52 located on the rear of the body 21, as shown in fig. 2 and 4.

Fig. 14 to 17 show in more detail the mechanism of which the button 52 forms part. As shown in fig. 16 and 17, these push buttons 52 are integral with a locking lever 55, in which and as can be seen in fig. 14 and 15, the ends of these levers 55 in the form of locking pins can be engaged in corresponding receiving cavities arranged in a rod 56 and a tube 57 telescopically engaged with each other, the rod 56 and tube 57 forming the axle of the rear wheel 60 of the vehicle 3. The locking lever 55 is biased by a spring 58 into a locking position corresponding to engagement of the pin in the receiving cavity.

With reference to fig. 14 and 15, it will be appreciated that starting from the position of the rear wheel 60 shown in fig. 14, which is remote from it, acts on the slider button 52 against the elastic force exerted by the spring 58 on the locking lever 55, allowing the pin to be extracted from the corresponding receiving cavity, releasing the sliding of the bar 56 and the tube 57 with respect to each other. This sliding movement may be continued until the wheel 60 enters the close range position shown in fig. 15, in which the locking pin engages in the other corresponding receiving cavity, allowing the wheel 60 to remain in this close range position. To return to the remote separation position, a force is applied to the slide button 52 to disengage the locking pin from the other receiving cavity, thereby returning the rod 56 and tube 57 to the remote separation position of the wheel 60.

Fig. 18 is a view of an element assembly according to another embodiment, wherein the body of the vehicle 3 is divided laterally into two parts 3a, 3b, namely a front part 3a and a rear part 3b, which parts are pivotally connected to each other by means of a connection member 65, said connection member 65 forming a hinge having a pivot axis transverse to the body of the vehicle 3. The pivoting achieved by this connection allows movement of the rear part 3b relative to the front part 3a between an unfolded use position shown in solid lines, in which the rear part 3b extends away from the front part 3a, and an incompletely folded storage position shown in broken lines, in which the rear part 3b is folded towards the front part 3a along the underside of the front part 3 a. The folded position shown in phantom is the fully folded position of the rear portion 3b, but is an incompletely folded position in the sense that the cart handle, grip handle and base are unfolded as shown.

It will be apparent from the foregoing that the present invention provides a modular element assembly that remedies the drawbacks of the prior art by allowing a simple and quick way to switch from a "stroller" configuration to a "vehicle" configuration, allowing the stroller to be folded in a reduced volume so as to facilitate storage or transport of the assembly when not in use, and allowing the required stability of the stroller to be obtained without limiting the possibility of the stroller using the vehicle or increasing the volume occupied by the element assembly in the folded state.

Claims (9)

1. A modular component assembly, which can form a child stroller (2) or a wheeled vehicle (3) suitable for being ridden by a child according to the configuration of the component assembly, characterized in that it comprises: - a subassembly (5, 6) formed by a stroller seat (5) and a stroller handle (6), the seat (5) comprising a base (10) and a backrest (11), the base (10) being connected to the stroller handle (6) and being movable relative to the stroller handle (6) between an unfolded state in which the base (10) is suitable for receiving a child and a folded state in which the base (10) is adjacent to and extends along the handle (6); and - A wheeled vehicle (3) for children, forming the chassis and wheels of a child stroller (2) in the "stroller" configuration, said vehicle (3) comprising a body (21) suitable for being ridden by a child, said body (21) comprising at its front a grip handle (20) suitable for being gripped by a child riding on said body (21), and comprising means (35) for mounting said stroller handle (6) to said body (21), wherein: The base (10) is dimensioned to rest on the grip handle (20) in the unfolded state so that the grip handle (20) stably supports the base (10); and in the folded state, the base (10) avoids a portion (21a) of the vehicle (3) for riding by a child. 2. An assembly according to claim 1, characterised in that the means (35) for mounting the stroller handle (6) to the body (21) of the vehicle (3) are designed to allow removable mounting of the seat (5)/stroller handle (6) subassembly. 3. An assembly according to claim 1 or 2, characterized in that it also includes means (15b, 22, 23) for connecting the base (10) to the gripping handle (20). 4. The assembly according to claim 3, characterized in that - the gripping handle (20) is T-shaped, i.e. has an upper bar (20a) forming a "handle", the upper bar (20a) comprising a first connection device (23) at its end, and - The base (10) has a side portion (15b) capable of covering the end of the upper rod (20a), and has a second connection device (22) at the side portion capable of engaging with the first connection device to achieve the connection between the base (10) and the grip handle (20). 5. The assembly according to any one of claims 1 to 4, characterized in that - the stroller handle (6) has a lower part (6a) connected to an upper part (6b) by a pivot connection (16), the pivot connection (16) allowing the stroller handle (6) to be placed in an unfolded state for pushing the stroller (2) or in a folded state in a position along the side of the body (21) of the wheeled vehicle (3) close to the body (21); and - The base (10) is pivotally connected to the pivot connection (16) by means of a mounting tab (15a), the mounting tab (15a) offsetting a plane formed by the base (10) relative to a pivot axis formed by the pivot connection (16), the offset allowing the base (10) to cover a body (21) of the vehicle (3) in the folded state. 6. An assembly according to any one of claims 1 to 5, characterized in that the grab handle (20) can be placed in two vertically staggered positions, namely a lowered position and a raised position, wherein the lowered position allows the space occupied by the element assembly to be reduced when not in use, and the raised position allows the grab handle (20) to be positioned at a height suitable for grasping by a child riding the vehicle (3). 7. An assembly according to claim 6, characterized in that the gripping handle (20) comprises a column (20b) forming a tubular portion (20b1), and the body (21) of the vehicle (3) forms a tubular extension (21c) receiving the tubular portion in a telescopic manner, and comprises fixing means (50, 51) allowing the tubular portion (20b1) and the tubular extension (21c) to be fixed relative to each other in either of the two positions of the gripping handle (20). 8. An assembly according to any one of claims 1 to 7, characterized in that it also includes means (52 to 58) for positioning the rear wheels (60) of the vehicle (3) in two spacing positions, the two spacing positions being a larger spacing position adopted in the "stroller" configuration of the element assembly and a smaller spacing position adopted when used independently as the wheeled vehicle (3) or when the element assembly is in the folded state. 9. An assembly according to any one of claims 1 to 7, characterized in that the trolley handle (6) comprises, at its lower part and rear side, a support (40) connected to a locking block (41), the locking block (41) being intended to engage with the body (21) of the vehicle (3), thereby allowing the trolley handle (6) to be locked to the body (21) in its unfolded state.