WO2023021252A1

WO2023021252A1 - Folding child's stroller

Info

Publication number: WO2023021252A1
Application number: PCT/FR2022/051555
Authority: WO
Inventors: Hervé PAPY
Original assignee: Beaba
Priority date: 2021-08-16
Filing date: 2022-08-04
Publication date: 2023-02-23
Also published as: FR3126116A1; FR3126116B1

Abstract

The invention relates to a folding child's stroller (1) comprising: - a chassis (3) comprising front and rear wheels (4, 5) that are intended to roll on the ground, - an accommodating structure (2) which is intended to hold a child in order to transport them and which is mounted movably on the chassis (3), the accommodating structure (2) extending along a longitudinal direction L, and - a connecting mechanism (6) mounted between the chassis (3) and the accommodating structure (2) to allow the stroller (1) to be transferred between a folded position and an unfolded position. According to the invention, the connecting mechanism (6) is configured to allow the chassis (3) to slide along the longitudinal direction with respect to the accommodating structure (2).

Description

DESCRIPTION

TITLE: FOLDABLE STROLLER FOR CHILDREN

Field of invention

The present invention relates to the field of childcare. It relates in particular to a foldable stroller having substantially the shape of an aircraft cabin suitcase, closed, in its folded position.

Technical background

Various foldable pushchairs for children are known which take the form of cabin luggage in order to facilitate transport by plane or during various trips in town, on the stairs of buildings, etc. A stroller includes a child-receiving structure that can occupy an extended position and a folded position. This reception structure generally comprises a lower part and an upper part articulated with respect to the lower part. The lower part forms the seat and the backrest in one piece, and the upper part forms the child's headrest. The stroller comprises wheels intended to rest on the ground and which are mounted on legs pivoting with respect to the reception structure. An example of this stroller is described in EP-B1 -3057846 and WO-A1 -2014/057238. Other types of compact strollers are also known in documents CN-U-207916932 and CN-A-111994162.

However, these strollers are not suitable for all children. Indeed, some children require sufficient comfort with, among other things, a headrest and a backrest.

In addition, the connection mechanism allowing the folding of the stroller determines the architecture of the stroller and therefore its aesthetics, its folded volume, its reliability but also the practicality of folding by users. It is found that the system with pivot connection requires large angles of maneuver by the user and is not very practical.

The object of the present invention is to provide a foldable stroller which is light, adaptable to the greatest number of children, and compact in the folded position while being easy to use and aesthetic.

Summary of the invention This objective is achieved in accordance with the invention by means of a foldable stroller for children, comprising:

- a chassis comprising front and rear wheels intended to roll on the ground,

- a reception structure intended to receive a child for its transport and which is movably mounted on the chassis, the reception structure extending in a longitudinal direction L, and

- a link mechanism mounted between the frame and the host structure to allow the pushchair to pass between a folded position and an unfolded position, the link mechanism being configured so as to allow the frame to slide relative to the structure reception in the longitudinal direction.

Thus, this solution achieves the above objective. In particular, the sliding or sliding of the frame relative to the reception structure which receives the child makes it possible to fold/store/store the stroller in a compact manner. Once the stroller is folded, it has the shape of a closed suitcase that can be stored in an aircraft cabin, which makes life easier for parents and/or users and offers an aesthetic design. The length of the stroller in its folded position corresponds substantially to the length of the reception structure.

The stroller also includes one or more of the following features, taken alone or in combination:

- the reception structure comprises a support shell fitted with a first side flange and a second side flange which are parallel, the reception structure comprising rolling tracks and the connection mechanism comprising guide pads intended to roll respectively on the rolling tracks, each rolling track being mounted on a downstream side of the first flange and of the second flange and extending substantially in the longitudinal direction.

- in the unfolded position of the stroller, at least one front wheel is at a distance from a rear wheel and the link mechanism is at a first end of the first and second flanges and,

- in the folded position of the stroller, the front wheel and the rear wheel are close to each other, at the location of the first end of the first and second flanges, and the link mechanism is located at a second end of the first and second flanges.

- the chassis comprises at least one hub rotatably connecting at least one rear leg carrying the rear wheel. - The connecting mechanism comprises a first base and a second base on which are mounted two distance guide pads from each other, each first and second base being mounted on a downstream side of the first and second flanges.

- A first and a second hub are each carried respectively by the first base and by the second base.

- the stroller comprises a thrust member provided with a first upright and a second sliding upright, in the longitudinal direction L, respectively in an internal cavity of the first flange and of the second flange.

- Each first and second flanges comprises a plate and an outer cover mounted on the plate so as to form the internal cavity, a longitudinal profile being arranged in each internal cavity and being configured so as to form means for guiding the guide pads.

- the reception structure comprises a back shell and a seat shell which are mounted movable respectively relative to the support shell and between the first and second flanges.

- the reception structure includes a movable headrest shell relative to the backrest shell and is configured so as to occupy:

-- a deployed position in which the seat shell and the headrest shell are deployed relative to the backrest shell so that the reception structure forms a volume for receiving the child, and

-- a folded position in which the seat shell and the headrest shell are substantially pressed against the backrest shell so that the reception structure forms a closed case.

- the receiving structure comprises guide means intended to cooperate with guide pads of the link mechanism.

- each first and second base comprises end-of-travel means able to stop the rotation of at least one rear leg of the frame.

- at least part of the host structure is made of a polymer material such as expanded polypropylene or expanded polystyrene.

- at least part of the host structure is made of a composite material which comprises a polymer matrix and a fibrous reinforcement densified by the polymer matrix.

- the frame is also made of a composite material which comprises a polymer matrix and a fibrous reinforcement densified by the polymer matrix.

- the stroller comprises means for unlocking the link mechanism so as to allow the frame to move relative to the reception structure. - the stroller includes a system for locking the back shell in position relative to the support shell.

- the reception structure also includes a mechanism for locking and unlocking the headrest and seat shells in relation to each other.

- the stroller comprises a basket which is mounted on the chassis and which is connected to a front leg and to a rear leg, the basket being intended to occupy an open position in a rolling position of the chassis and a closed position in a position of closure of the frame, the basket comprising a bottom equipped with reinforcements and a seam line defining a folding line along a direction parallel to an axis of rotation of the rear leg relative to the frame, the pivoting of the rear leg around the axis of rotation causing the folding or unfolding of the basket along the folding line, the reinforcements on the one hand being coplanar in the open position, and on the other hand being superimposed and extending in parallel planes in the position closed.

According to another aspect, the invention relates to a foldable stroller for children, comprising:

- a chassis comprising at least one front leg and at least one rear leg, the rear leg being pivotally mounted, around an axis of rotation, relative to the chassis between a rolling position and a closed position in which the front legs and rear are parallel,

- a basket connected to the front leg and to the rear leg, the basket being intended to occupy an open position in the rolling position and a closed position in the closed position, characterized in that the basket comprises a bottom equipped with reinforcements and a seam line defining a folding line along a direction parallel to the axis of rotation of the rear leg, the pivoting of the rear leg around the axis of rotation causing the folding or unfolding of the basket along the fold line, and in that the reinforcements are coplanar in the open position, and in that the reinforcements are superposed and extend in parallel planes in the closed position.

Brief description of figures

The invention will be better understood, and other aims, details, characteristics and advantages thereof will appear more clearly on reading the detailed explanatory description which follows, of embodiments of the invention given as purely illustrative and non-limiting examples, with reference to the appended schematic drawings in which: FIG. 1 is a perspective view of a foldable stroller-type child transport device in its unfolded position according to the invention;

Fig. 2 is a front view of a collapsible stroller in its folded position and taking the form of aircraft cabin baggage according to the invention;

Figure 3 is a side view of the stroller according to Figure 2;

FIG. 4 illustrates in perspective a reception structure intended to receive a child and to equip a foldable stroller, the reception structure being in a deployed position according to the invention;

FIG. 5 represents a headrest shell of a reception structure according to the invention;

FIG. 6 represents a member of the reception structure which is intended to delimit the reception structure according to the invention;

Figure 7 is a perspective and cross-sectional view of the member of Figure 6;

Figure 8 is a rear view of an example of a system for locking different positions of a backrest structure according to the invention;

Figure 9 is a perspective view of a frame supporting a receiving structure of a foldable stroller according to the invention;

Figure 10 is a perspective view and details of the front wheels of the frame of a foldable stroller according to the invention;

Figure 11 is a view of a flange of the host structure without an outer protective cover according to the invention;

Figure 12 is a detail view of an example of a connecting mechanism between a frame and a receiving structure of a foldable stroller according to the invention; And

Figure 13 is a detail view of an example of an upright of a thrust member extending at least partly in a flange of a receiving structure for a foldable stroller according to the invention;

Figure 14 is a rear view of a stroller in its folded position and comprising a basket, intended to receive objects, which is in a closed position, the basket having portions defined in planes parallel to an external surface of a pushchair back shell according to the invention.

Detailed description of the invention

Figure 1 illustrates a child carrier for transporting a child. The transport device is of the foldable, compact and lightweight stroller type. The stroller 1 can occupy an unfolded position in which a child can be transported and a folded position in which it has the form of a “suitcase or cabin luggage on wheels” for its own storage or transport. Generally, a cabin suitcase on wheels has dimensions of the order of 55x35x20 cm to facilitate its storage in the cabin of an aircraft, here an airplane.

The stroller 1 comprises a convertible reception structure 2 intended to receive the child to be transported and a frame 3 on which is mounted on the reception structure 2. The reception structure 2 is configured to occupy a deployed position and a bent position. In the deployed position, the reception structure 2 is configured for the installation of the child. In the folded position, the reception structure 2 has a generally parallelepipedal shape similar to a closed aircraft suitcase called "cabin luggage", closed. In Figure 1, the stroller 1 is unfolded and the reception structure 2 is in the deployed position. In Figures 2 and 3, the stroller 1 is folded and the reception structure is in the folded position.

In the present invention, we mean by the expression "convertible reception structure" the fact that the reception structure can be used either as a means of receiving and transporting a seated or lying child, or as a closed suitcase having the dimensions compact size of a cabin suitcase so that it can be transported on its own and stored easily.

The chassis 3 carries at least one front wheel 4 and one rear wheel 5 intended to roll on the ground S. Advantageously, the chassis 3 comprises two front wheels and two rear wheels in order to better support the chassis and the stroller. The stroller 1 comprises a link mechanism 6 arranged between the frame 3 and the reception structure 2 to allow passage from the folded position to the unfolded position or vice versa. The connecting mechanism 6 is configured in such a way as to allow the sliding of the chassis 3 with respect to the reception structure 2 in a longitudinal direction L. A thrust member 7 makes it possible to maneuver and push the stroller 1 when the latter is in the unfolded position but also, for example, to pull the stroller with the wheels rolling on the ground like a "trolley" when the latter is in the folded position.

Referring to Figure 4, the receiving structure 2 extends globally in the longitudinal direction L. The receiving structure 2 comprises various shells which are referred to below as headrest shell 8, backrest shell 9, and seat shell 10. These shells 8, 9, 10 are rigid or semi-rigid. In particular, these are made of a polymer material. An example of polymer material is expanded polypropylene (PP-E) or expanded polystyrene (EPS). Such polymer materials bring density and lightness to the hulls while providing rigidity. They can be made by cast. Each headrest 8, backrest 9 and seat 10 shell comprises an external surface 8a, 9a, 10a (oriented towards the external environment of the stroller) and an internal surface 8b (opposite to the external surface). Each internal surface 8b is intended to receive a pad 11 for the child's comfort. The trim 11 can be formed in one piece to cover all the headrest, backrest and seat shells. Alternatively, the lining 11 is formed of several different parts to respectively cover a shell.

The shells 8, 9, 10 are separate from each other and are arranged adjacently. They are juxtaposed one after the other in the present example. In particular, the seat shell 10 and the headrest shell 8 are respectively movable relative to the backrest shell 9. Advantageously, the headrest shell 8 is connected to the backrest shell 9 via a pivot connection . The back shell 9 is elongated and extends along the longitudinal direction L between a first end 12a and a second end 12b. The back shell 9 also has a width along a first transverse direction T1. The first transverse direction T 1 is perpendicular to the longitudinal direction L.

In Figure 5, the back shell 9 comprises at its first end 12a an axis I which extends in the first transverse direction T1. The back shell 9 comprises at its first end 12a a rod 13 which extends in the first transverse direction T1. The rod comprises two free ends which are opposite in the first transverse direction T 1 . The ends of the rod 13 are fixed to projections of the back shell 21 . The rod defines the axis of rotation I. The headrest shell 8 comprises an end 14 which is equipped with a cylindrical hollow portion 15 intended to be traversed by the rod 13. In this way, the hollow portion rotates around the rod along the axis of rotation I. The hollow cylindrical portion 15 is made in one piece with the headrest shell 20. Alternatively, the backrest shell 9 comprises two studs which are arranged at the level of the first end 12a and which are spaced from each other in the first transverse direction T1. The nipples are in this case facing each other and are intended to be housed in holes arranged in the projections. According to an alternative, the end 14 comprises two lugs spaced from each other and each traversed by the rod 13 (or the axis I) or by a stud. Of course, the headrest shell 8 can include the axis I or the studs and the backrest shell 9 can include the hollow cylindrical portion or the lugs to form the pivot connection. As we can see in Figure 5, the headrest shell 8 has a curved or curvilinear shape. The headrest shell 8 is made in one piece (made from the material). Similarly, the seat shell 10 has a curved or curvilinear shape.

According to an alternative not shown, the headrest shell 8 comprises different parts such as a first (main) portion and a second portion which form a substantially L-shaped longitudinal section. The second portion is connected to the back shell 9 via the pivot link. The headrest shell 8 may further comprise a third portion allowing the first portion to be extended and which may be movable relative to the first portion along a pivot axis substantially parallel to the first transverse direction.

In Figures 1, 6 and 7, the host structure 2 also includes a support shell 18 forming the main body of the host structure 2. The support shell 18 is also rigid. This is made of a polymer material or a composite material. Preferably, the material of the support shell 18 is a composite material which comprises a polymer matrix and a fibrous reinforcement densified by the polymer matrix. The polymer matrix is for example polyamide 12 (PA 12). The fibrous reinforcement comprises for example long carbon fibers. The seat shell 10 and the back shell 9 are pivotally mounted (in a pivot connection) on the support shell 18. For this purpose, the support shell 18 extends globally in the longitudinal direction L. support shell 18 has a general U-shape. This is equipped with a first lateral flange 19 and a second lateral flange 20. These first and second lateral flanges 19, 20 each extend in the longitudinal direction L between a first end 21a and a second end 21b. The first and second flanges 19, 20 are opposite in the first transverse direction T 1 . The flanges 19, 20 are parallel.

The first and second flanges 19, 20 also extend along a second transverse direction T2 between an upstream side 22a and a downstream side 22b. The second transverse direction T2 is perpendicular to the longitudinal direction L and also to the first transverse direction T 1 .

Advantageously, the first and second flanges 19, 20 are connected by an armature 23 which extends along the first transverse direction T 1 . The reinforcement 23 is intended to provide rigidity to the support shell 18. The first flange 19, the second flange 20 and the reinforcement 23 are formed separately and then are assembled together. Alternatively, the flanges 19, 20 and the armature 23 are formed from a single piece (or came from material). The armature 23 is arranged at the level of the second ends 21b of the first and second flanges 19, 20.

Referring to Figures 6 and 7, each first and second flange 19, 20 comprises an outer surface 20a (facing the external environment of the support shell) and an internal surface 19b (facing the interior of the support shell 18). Each first and second flange 19, 20 comprises a plate 24 and a cover 25 mounted on the plate 24 by forming at least partly an internal cavity 26. For this purpose, the plate 24 is generally flat and the cover 25 has a cross section substantially C-shaped. Each plate 24 carries the inner surface 19b and each cover 25 carries at least part of the outer surface 20a. In the present example, the cover 25 has an opening 25a which passes through its wall on either side in the transverse direction T1. The opening 25a also has an elongated shape in the longitudinal direction. Furthermore, the opening 25a is delimited by a curvilinear border 25b.

As shown in Figure 6, each cover 25 includes a notch 27 at one of its ends. When the cover 25 is mounted on the plate 24, the notch 27 delimits an opening emerging inside the internal cavity 26. This internal cavity 26 is intended to receive at least partly the thrust member 7. The cavity internal 26 is closed and is only accessible at the level of the notch 27. The flanges, and in particular the covers, make it possible to hide at least in part the organs of the link mechanism 6 which is described in more detail below . This gives an aesthetic appearance to the reception structure and to the stroller 1 .

According to the embodiment illustrated in Figure 7, each first and second flange comprises a longitudinal profile 28 which is housed at least partly between the cover 25 and the plate 24. Each longitudinal profile 28 is arranged at least partly in the cavity 26. Each longitudinal profile 28 is also configured so as to form means for guiding the guide pads described below for various components of the stroller. Each profile 28 comprises walls forming the guide means. In particular, each profile extends in the longitudinal direction between a first end and a second end. The length of each longitudinal section 28 is substantially identical to that of the plate and of the cover. Each section 28 also comprises a central portion 29 forming a cavity 290. This central portion 29 comprises walls having a cross section of substantially rectangular shape. The central portion 29 comprises an outer wall 29a which is visible through the opening 25a of the cover 25. In this way, the outer surface of this outer wall 29a also forms part of the outer surface 19a of each first and second flange 19, 20. Each section 28 also comprises a first wing 28a and a second wing 28b which extend on either side of the central portion 29 in the second transverse direction T2. Advantageously, the first wing 28a extends the outer wall 29a of the central portion 29. According to another advantageous characteristic, the longitudinal section 28 is made of a metallic material.

The shells 8, 9, 10, 18 of the assembled reception structure 2 (in particular in the folded position) form the faces of a "cabin bag" i.e. a front face, a rear face, a top face, a side bottom and two side faces. In particular, the outer face 20a, 19a of the first and second flanges 19, 20 form the side faces. The outer face 8a, 10a of the headrest and seat shells form the front face. The outer face 9a of the back shell 9 forms the rear surface. The outer surfaces of the second portions of the headrest and seat shells respectively form the top face and the bottom face.

Referring to Figures 4 and 6, the first flange 19 and the second flange 20 each comprise a first pivot shaft 30 which extends from their internal surface 19b in the first transverse direction T1. The axis of the first pivot shafts 30 form the pivot axis B of the seat shell 10 with respect to the support shell 18. The seat shell 10 comprises two first pivot orifices 31 each intended to receive a first pivot shaft 30. Advantageously, each pivot orifice 31 is arranged towards a proximal end 32 of the seat shell 10 and on a lateral wing 33 of the seat shell 10. The lateral wings 33 extend transversely by relative to a main portion of the seat shell 10 and are opposite in the first transverse direction T 1 .

The first and second flanges 19, 20 also each include a second pivot shaft 40 extending from the internal surface, in the first transverse direction T 1 . The axis of the second pivoting shafts 40 defines the pivoting axis C of the backrest shell 9 with respect to the support shell 18. The backrest shell 9 comprises second pivoting orifices 41 each intended to receive a second shaft 40. These second pivot orifices 41 are arranged on the side walls 42 of the backrest shell 9, and more particularly at the level of the second end 12b of the backrest shell 9. The back shell 9 can be positioned according to different inclinations with respect to the support structure for the comfort of the child between a so-called elongated position and a so-called seated position. The reception structure 2 includes a locking system 34 to lock the back shell 9 in one of the different angular positions. The locking system in position 34 comprises a handle 34a which is mounted on the back shell 9 (see Figure 8) and cables (not shown) which connect the handle 34a and the pivot shaft 40.

As we explained above, the reception structure 2 is configured so as to occupy a deployed position and a folded position. In the deployed position, the seat 10 and headrest 8 shells are deployed relative to the back shell 9 so as to form a volume for receiving the child. In other words, the headrest shell 8 and the seat shell 10 have pivoted towards the outside of the support shell 18 and to extend transversely to the backrest shell 9. The external surfaces of the seat shell headrest 8 and of the seat shell 10 extend in planes which are each transverse to the plane in which the outer surface of the backrest shell 9 is defined.

In the folded position, the seat shells 10 and headrest shells 8 are substantially pressed against the backrest shell 9 so as to close the receiving volume and to present the shape of a compact aircraft carry-on bag. In particular, the internal surfaces 8b of the seat 10 and headrest 8 shells face the internal surface of the back shell 9. The planes of the external surfaces 8a, 10a of the seat and support shells head are substantially parallel to the plane of the outer surface of the backrest shell. The planes are parallel to the longitudinal direction L in the bent position. The trim 11 (for the headrest, backrest and seat shell) is arranged inside the shells. Advantageously, the outer surface 8a of the headrest shell 8 has surface continuity with the outer surface 10a of the seat shell 10 in the folded position. The outer surfaces 8a, 10a are flush. As we can see in Figure 4, the headrest shell 8 also includes two side wings 60 which extend transversely from the sides of the main portion. These side wings 60 are opposite in the first transverse direction T1. Portions of these side wings 60 are arranged inside (or between) the first flange 19 and the second flange 20 of the support structure 18 in the folded position. The side wings 33 of the seat shell 10 are also inside (or between) the first and second flanges 19, 20. Referring to Figure 2, the host structure 2 also includes a mechanism 70 for locking and unlocking the headrest and seat shells 8, 10 relative to each other. The mechanism may comprise an operating member mounted on one of the shells and cooperating with a tab to hold the shells in the closed position corresponding to the folded position of the host structure 2. Advantageously, the host structure 2 comprises automatic return means 80 in the folded position of the seat shell 10 and the headrest shell 8. The return means 80 comprise springs (return springs for example) which are mounted respectively at the level of the axes pivoting/rotation of the seat and headrest shells. The reception structure 2 also includes a mechanism (not shown) for slowing down the rotation of the seat shell 10 or of the headrest shell 8 with respect to the backrest shell 9. In particular, this mechanism of deceleration is intended to counter the effect of the return spring. Advantageously, but not limitatively, the slowing mechanism comprises a gear bathed in oil and cooperating with the return spring so as to slow down the movement of the spring.

Referring to Figures 1, 3 and 9, the frame 3 is intended to occupy a rolling position and a closed position. In particular, frame 3 includes at least one front leg 90 and at least one rear leg 91 . The rear leg is pivotally mounted around an axis of rotation H with respect to the frame 3 between the rolling position and the closed position. In the rolling position, the front leg 90 is at a distance from the rear leg 91 . In Figure 9, the frame includes two front legs 90 and two rear legs 91. The front legs and rear legs are located on each side of the chassis 3 and are defined as left front leg, right front leg, left rear leg and right rear leg. Each rear leg 91 comprises a first end on which is pivotally mounted a rear wheel 5. The axis of rotation D of the rear wheels is perpendicular to the direction of extension of the rear legs 91 . Advantageously, the rear legs are connected by a bar 92 which extends transversely between the two rear legs 91. In this example, the rear legs 91 and the bar 92 are made from the ground. Alternatively, the bar 92 is an added piece and fixed to the rear legs. The rear wheels are separated from each other by a distance D5 in a direction parallel to the axis of rotation D of the rear wheels.

In FIGS. 9 and 10, the front legs 90 each also comprise a first end towards which is mounted a front wheel 4. As for the legs rear, the front legs 90 are interconnected by means of a cradle 93 which extends transversely between the two front legs 90. The cradle 93 is located at the first ends. The front legs 90 and the cradle 93 came from material. Of course, the cradle 93 can be an added part and fixed on the front legs 90. Each front wheel 4 is mounted in rotation with respect to a tube 94 (substantially vertical). A fork 95 extending from each tube 94 comprises two branches 96 whose ends are connected to an axis of rotation E around which each front wheel 4 turns to roll on the ground. Each front wheel 4 is also mounted free to rotate with respect to an axis of rotation F (of the idler wheel type). For this purpose, the axis of rotation F is centered on the tube 94 and which rotates around this axis F. The axis of rotation E of the front wheels 4 is perpendicular to the axis of rotation F of the tube 94 which is here vertical. Each tube 94 is connected in a pivoting manner, around the axis F, to a connecting element 97.

Each connecting element 97 is connected to one end of the cradle 93 via a pivot connection in order to be able to follow the profile of the ground during rolling. The pivot connection between the connecting elements and the cradle is formed by an axis G which is parallel or substantially parallel to the axis of rotation D of the rear wheels. Damping means are provided at the level of this axis G in order to absorb the shocks due to the unevenness of the ground. A removable protective cover 99 is mounted on each link element 97 to protect the mechanism and the links. The frame 3 also includes a step 116 which is intended to accommodate the feet of the child. The running board 116 is removably mounted on the cradle 93 and extends between the ends of the two front legs. Advantageously, but not limitatively, the running board 116 at least partly covers the protective covers 99 of the connecting elements 97. The front wheels 4 are separated from each other by a distance D4 in a direction parallel to the axis of rotation E of the rear wheels 5. The distance D4 between the front wheels 4 is less than the distance D5 of the rear wheels 5.

In Figure 12, each rear leg 91 includes a second end. These second ends are connected to the chassis via a pivot connection along the axis of rotation H. Each end of the legs is connected to a hub 98 around which the rear legs 91 pivot. Each hub 98 defines the hinge axis H parallel to the axis of rotation E of the wheels 4, 5. In service (the stroller is in the deployed position as shown in Figure 1), the axis d articulation H is parallel to the ground S. More specifically, the right front leg 90 is connected to the right rear leg 91 via a first hub 98a located on the right side of the chassis 3. Similarly, the left front leg 90 is connected to the left rear leg 91 via a second hub 98b located on the left side (opposite to the right side in the first transverse direction).

Each hub 98 is carried by a base of the link mechanism 6. More specifically, a first base 105a and a second base 105b are arranged respectively on each side of the pushchair 1 . The first base 105a carries the first hub 98a allowing the pivoting of the right rear leg. Similarly, the second base 105b carries the second hub 98b allowing the pivoting of the left rear leg. To this end, each first and second base 105a, 105b comprises a first wall portion 107 (shown in FIG. 12) on which the hub is arranged.

Each front leg 90 also includes a second end. These second ends are extended by the first wall portion 107 of the bases. Each front leg is fixedly mounted on the first wall portion of a base. In other words, the front legs are fixed in rotation relative to the bases 105a, 105b. As shown in the figures, a protective cover 109 is mounted on each base 105a, 105b so as to hide the first wall portion and the various connecting parts, in particular the axis of rotation of the rear legs (the hub) .

On figs 7, 11 and 13 and as we have seen previously, the frame 3 slides in the longitudinal direction relative to the reception structure 2 for the folding or unfolding of the stroller 1 via the link mechanism 6. For this, the receiving structure (and in particular the flanges) comprises at least one rolling track 100 extending along the longitudinal direction L. The connecting mechanism 6 comprises at least one guide shoe intended to roll or slide on the rolling track. In the present embodiment, the link mechanism 6 comprises two guide pads called first pad 101 and second pad 102 which are each intended to roll on at least one rolling track 100. The two guide pads provided on each track of bearing 100 allow guidance in translation and better stability of the frame 3 during sliding. Advantageously, but not limitatively, each guide shoe is guided between two rolling tracks 100a, 100b. Each pair of raceways 100a, 110b is carried at least in part by a section 28 of the first and second flanges. More precisely, the second wing 28b of each section 28 comprises a central branch 103 extending along the longitudinal axis and two lateral branches 104 which extend from the central branch 103 along the first transverse direction T 1 . The side branches 104 are opposite and at a distance from each other in the second transverse direction T2. Each side branch 104 is provided with a bearing track 100a, 100b. The central and lateral branches form the guide means (formed in the profile). The rolling tracks are arranged at the level of the downstream side 22b of a flange. The rolling track 100, 100a, 100b extends over the entire length of the profiled wall (in the longitudinal direction).

The first and second guide pads 101, 102 each have a circular section like a roller. These have a diameter of between 25 mm and 60 mm. The guide pads are carried by each base of the link mechanism 6 as we can also see. More specifically, the first base 105a and the second base 105b are arranged between the frame 3 and the host structure 2. The first base and the second base each comprise a second wall portion 108 which extend the first portion outwards. wall 107. This second wall portion 108 is visible on the outside of the protective cover 109 and carries the guide pads 101, 102. .

Referring to Figures 7 and 12, the two pads 101, 102 are mounted free to rotate around an axis of rotation 11, I2. The axes of rotations 11, I2 are parallel to each other. The axes of rotation 11, I2 are also parallel to the pivot axis H of the hubs 98. The guide pads 01, 102 are arranged at a distance from each other. In the mounting situation, each second wall portion 108 is arranged facing the central branch 103 of the guide means. To this end, each plate 24 of the flanges has a width less than that of the longitudinal profile 28 or even of the cover 25 (in the second transverse direction T2). In this way, the end of one of the lateral branches 104 is at a distance from a longitudinal edge 24b leaving a space between the longitudinal section 28 and the plate 24 to allow the passage of the pads 101, 102. The latter are then at least partly in the internal cavity 26 of the flanges 19, 20. The rolling tracks 100 and the guide pads 101, 102 are protected by the covers of the flanges from external attacks such as dust and water. The service life of the link mechanism 6 as well as that of the stroller is improved.

Advantageously, but not limitatively, the first base 105a and the second base 105b are connected by an arm 106 intended to stiffen the frame 3. The arm 106 extends transversely between the two bases 105a, 105b. When folding and unfolding the stroller, the guide pads 101, 102 slide on each rolling track 100 between the first and second ends thereof. In the folded position, the first base 105a is close to the second end 21b of the first flange and the second base 105b is also close to the second end of the second flange. The first and second guide pads of each base 105a, 105b are close to the second end 104b of the rolling track. Similarly, in the unfolded position, the first base is close to the first end 21a of the first flange and the second base is close to the first end of the second flange. The first and second guide pads of each base 98 are located close to the first end 104a of the rolling track 100.

In FIG. 12, the link mechanism 6 comprises end-of-travel means capable of stopping the rotation of at least one rear leg 91 of the frame 3. According to the example shown, the protective cover 109 comprises a projecting portion 110 which extends in a direction transverse to the axis of rotation H of the hubs. The projecting portion 110 includes an abutment surface 110a which is arranged opposite the rear leg and downstream of the hub 98. The abutment surface 110a extends in a plane which is substantially parallel to the axis of rotation of the legs back. During the rotation of the rear leg 91 around the axis of rotation G, the latter abuts against the abutment surface 110a. The end-of-travel means may alternatively or additionally comprise a finger extending from the second end of the rear legs and which, in rotation, is intended to come into abutment against a notch placed in the lower part of the flanges.

The bases 105a, 105b arranged on each side of the stroller 1, make it possible to support the reception structure (and in particular the support shell 18) and the folding following a sliding of the frame relative to the reception structure 2.

The frame 3 is also made of a composite material which comprises a polymer matrix and a fibrous reinforcement densified by the polymer matrix. The polymer matrix is for example a polyamide 12 (PA 12). The fibrous reinforcement comprises for example long carbon fibers.

Referring to Figures 1 and 11, the thrust member 7 comprises a first longitudinal upright 111a and a second upright 111b. These uprights 111a, 111b are parallel. The uprights 111a, 111b each also include an end proximal 112a and distal end 112b. Pusher 7 includes a handle 113 which is pivotally attached to each proximal end 112a of the uprights. The handle 113 can pivot around a pivot axis perpendicular to the axis of elongation of the uprights 111a, 111b. Each first and second upright 111a, 111b slides in the internal cavity 26 of the flanges 19, 20 between a storage position and a functional position. The distal end 111b of the uprights 111a, 111b is still housed inside the flanges. In the storage position, the handle 113 is flush with the second end 19b of the flanges while in the functional position, the handle 113 is at a distance from the second end 19b of the flanges.

Advantageously, but not limitatively, and with reference to Figures 7 and 13, the uprights 111a, 111b slide in the cavity 290 formed by the central portion of the longitudinal profile 28. For this purpose, each upright 111a, 111b comprises guide means allowing sliding relative to the profile 28. The guide means comprise linear bearings 115 which are each installed at the end 112b of each upright 111a, 111b. The linear bearing 115 has a rectangular cross section. Advantageously, the central portion comprises two crosspieces 29b which extend from the outer wall 29a in the first transverse direction T 1 . These crosspieces 29b also extend in the longitudinal direction. Each linear pad 115 slides between these two crosspieces 29b.

The first and second flanges 19, 20 each comprise a first stop element 114 for the uprights of the thrust member 7 in the storage position. This element 114 is represented in FIG. 12. This abutment element 114 is fixed on the plate 24 and faces the internal cavity 26. In particular, the abutment element is located towards a lower portion 24a of the plate 24. The guide pads each comprise a nose 117 which protrudes in the longitudinal direction L. The nose 117 comes into abutment against this abutment element 114.

The first and second flanges 19, 20 also each include a second abutment element 118 of the uprights 111a, 111b of the thrust member 7 in the functional position.

The first and second uprights 111a, 111b can also occupy an intermediate position between the storage position and the functional position. The intermediate position allows for example to pull the folded stroller (and folded reception structure) in trolley mode. The flanges comprise intermediate abutment elements which are provided to block the uprights in the intermediate position.

According to one embodiment, the change in position of the thrust member 7 is independent of the changes in position of the host structure and of the frame relative to the host structure. Similarly, the change in position of the convertible reception structure 2 is independent of the change in position of the foldable stroller itself. The reception structure can occupy the extended or folded position regardless of the position of the stroller.

Advantageously, the stroller 1 comprises means for unlocking the link mechanism 6 to allow the sliding of the frame 3 with respect to the reception structure and in particular the first and second flanges 19, 20. In the present example, the first stop elements 114 also form these unlocking means. The first abutment elements 114a are mounted on the plate 24 along a pivot connection. In particular, when the nose 117 of the linear pads 115 comes into abutment against this abutment element 114, the latter pivots so as to release the axes of rotation of the guide pads 101, 102.

According to Figures 1, 9 and 14, the stroller is equipped with a basket 50 for receiving objects. The basket 50 extends between at least the front leg and the rear leg. In particular, the basket 50 extends transversely between the two front legs and between the two rear legs. The basket comprising a bottom 51 from which rise side walls. The basket includes clips 54 allowing it to be attached to each leg of the frame. The bottom is equipped with reinforcements 53 (shown in dotted lines) to stiffen the bottom 51 and to facilitate the folding of the basket 50 when folding the stroller. Indeed, the basket 50 can occupy an open position when the frame 3 is in the rolling position and a closed position when the frame 3 is in the closed position. The objects can be placed in the basket when the latter is in the open position. For this, the bottom 51 includes a seam line 52 defining a fold line along a direction parallel to the axis of rotation H of the rear leg. The reinforcements 53 comprise panels made of a plastic material for example. Each panel is installed in a bottom pocket. The two pockets are separated by the seam line 52. Advantageously, the basket 50 is made of a fabric. The pivoting of the rear leg along the axis of rotation H causes the folding or unfolding of the basket along the folding line 52, ie the passage of the basket 50 from the open position to the closed position, or vice versa. In the open position, the reinforcements 53 are coplanar. The plane of the reinforcements is transverse to the direction of elongation of the legs. The seam line 52 is at a first distance from the axis of rotation H.

In the closed position of the basket 50 which is shown in particular in Figure 14, the fold line (seam line 52) defines two bottom portions 51a (only one of which is shown) which are superimposed and substantially parallel. The bottom portions 51a are parallel in this position to the outer surface of the back shell. The reinforcements 53 are also superimposed and extend in planes which are parallel. In particular, the planes of the reinforcements are also parallel to the plane of the back shell. Likewise, in the closed position, the seam line 52 is at a second distance from the axis of rotation H (in a plane containing the seam line). The bend line is closer to the H axis in the closed position than in the open position. In other words, the first distance is greater than the second distance. The width of the bottom 51 of the basket 50 is also less than the width measured between the rear legs and the front legs. In this way, in the closed position, the basket 50, and in particular the bottom 51, extends along the first transverse direction T 1 between the legs 90, 91. The basket 50 may also include an upstream flap 55 and also a downstream flap 56 intended to retain the objects. These shutters are also rigid. In the closed position, the flaps 55, 56 are defined in planes parallel to the planes of the bottom portions.

We are now going to describe the different steps for folding the stroller 1 . This implies that stroller 1 is in the unfolded position and that the reception structure is in the deployed position. In this service situation for transporting the child with the stroller 1 unfolded as shown in Figure 1, at least one front wheel 4 is at a distance from a rear wheel 5. The link mechanism 6 is in this case at the level of the first end 21a of the receiving structure (of the first flange 19 and of the second flange 20) and in particular in the lower part thereof.

Following a first step, a user will close the reception structure. To do this, the user will rotate the seat shell towards the backrest shell then rotate the headrest shell towards the backrest shell. The reception structure 2 has the shape of a closed suitcase where the lining 11 is protected from the external environment by the shells. Prior to the closing of the seat shell, the operating member of the mechanism 70 is pivoted to unlock the seat shell. Following a second step, the user pivots the handle 113 which allows the translation or sliding of the uprights 111a, 111b inside the support shell (the flanges 19, 20) from the functional position to the storage position of the amounts. In particular, the linear skates 115 slide between the crosspieces of the section 28. In general, the handle 113 carries another unlocking system (not described) allowing the handle 113 to be pivoted. The user activates this system beforehand in order to be able to drive the pivoting of the handle. When the nose 117 reaches the abutment element 114 in the storage position, the latter tilts so as to unlock the link mechanism 6. The receiving structure slides relative to the chassis. In particular, the guide pads 101, 102 slide between the rolling tracks 100. At the end of the race, the bases are located at the level of the ends 19b, 21b of the first and second flanges 19, 20. Similarly, the connecting mechanism 6 is located at the level of the second end 21b of the reception structure 2 (in particular in the upper part thereof). The front legs are in contact with the side 22b of the flanges 19, 20 and extend parallel to the flanges 19, 20.

Following a third step, the user pivots the rear legs 91 towards the front legs 90. The stroller 1 is then in the folded position. When the stroller 1 is in the folded position as shown in Figures 2 and 3, at least one front wheel 4 and one rear wheel 5 are close to each other. The wheels 4, 5 are located at the location of the first end 21a of the reception structure 2 (in particular in the lower part thereof). A rear wheel portion 5 faces the outer surface 20a of the first and second flanges. Conversely, the front wheels 4 are located transversely between the rear wheels and at least a portion of the front wheels 4 faces the internal surface 19b of the first and second flanges 19, 20. In this position, the front legs and rear are parallel to each other and with the first and second flanges 19, 20.

The reception structure 2 includes 120 feet to keep the stroller 1 folded in a stable and upright position with the wheels resting on the ground.

When a user wishes to unfold the stroller, the latter turns the handle 113 which unlocks the sliding of the uprights 111a, 111b. These can slide from the storage position to the functional position of the uprights. In the functional position, the uprights 111a, 111b unlock the link mechanism 6 so as to allow rotation of the rear legs to open the frame 3. The user can pull the reception structure 2 so that it passes from the bent position to the deployed position. The user wishing to open the reception structure 2 to install a child, activates the mechanism 70 for locking and unlocking the shells.

Automatically, the return springs cause the rotation of the headrest shell and the seat shell towards the deployed position. In the deployed position, the reception structure 2 forms a volume for receiving the child with the headrest shell which extends substantially in the longitudinal direction and the seat shell which extends in a transverse position. in the longitudinal direction.

Claims

22 CLAIMS

1 . Stroller (1) foldable for children, comprising:

- a frame (3) comprising front and rear wheels (4, 5) intended to roll on a ground (S),

- a reception structure (2) intended to receive a child for its transport and which is movably mounted on the frame (3), the reception structure (2) extending in a longitudinal direction L, the structure of reception (2) comprising a support shell (18) equipped with a first lateral flange (19) and a second lateral flange (20) which are parallel and

- a link mechanism (6) mounted between the frame (3) and the reception structure (2) to allow passage of the stroller (1) between a folded position and an unfolded position, the link mechanism (6) is configured in such a way as to allow the frame (3) to slide relative to the reception structure (2) in the longitudinal direction, characterized in that the reception structure (2) comprises a backrest shell (9) and a seat shell (10) which are movably mounted respectively relative to the support shell (18) and between the first and second flanges (19, 20).

2. Stroller (1) according to the preceding claim, characterized in that the receiving structure (2) comprising rolling tracks (100) and the connecting mechanism (6) comprising guide pads (101, 102) intended to roll respectively on the rolling tracks (100), each rolling track (100) being mounted on a downstream side (22b) of the first flange (19) and of the second flange (20) and extending substantially in the longitudinal direction .

3. Stroller (1) according to one of the preceding claims, characterized in that:

- in the unfolded position at least one front wheel (4) is at a distance from a rear wheel (5) and the link mechanism (6) is at a first end of the first and second flanges and,

- in the folded position, the front wheel (4) and the rear wheel (5) are close to each other, at the location of the first end of the first and second flanges (19, 20), and the link mechanism (6) is located at a second end of the first and second flanges (19, 20).

4. Stroller (1) according to any one of the preceding claims, characterized in that the frame (3) comprises at least one hub (98, 98a, 98b) rotatably connecting at least one rear leg (91) carrying the rear wheel (5).

5. Stroller (1) according to one of the preceding claims, characterized in that the connecting mechanism (6) comprises a first base (105a) and a second base (105b) on which are each mounted two guide pads ( 101, 102) at a distance from each other, each first and second bases (105a, 105b) being mounted on a downstream side (22b) of the first and second flanges (19, 20).

6. Stroller (1) according to the preceding claim, characterized in that a first and a second hub (98, 98a, 98b) are each carried respectively by the first base (105a) and by the second base (107b).

7. Stroller (1) according to one of the preceding claims, characterized in that it comprises a thrust member (7) provided with a first upright (1 11 a) and a second upright (11 b) sliding , in the longitudinal direction L, respectively in an internal cavity (26, 290) of the first flange (19) and of the second flange (20).

8. Stroller (1) according to the preceding claim, characterized in that each first and second flanges (19, 20) comprises a plate (24) and an outer cover (25) mounted on the plate (24) so as to form the internal cavity (26), a longitudinal profile (28) being arranged in each internal cavity (26) and being configured so as to form means for guiding the guide shoes (101, 102).

9. Stroller (1) according to any one of the preceding claims, characterized in that the reception structure (2) comprises a headrest shell (8) movable relative to the backrest shell (9) and is configured to occupy:

- a deployed position in which the seat shell (10) and the headrest shell (8) are deployed relative to the backrest shell (9) so that the reception structure forms a volume of receipt of the child, and

- a folded position in which the seat shell (10) and the headrest shell (8) are substantially pressed against the backrest shell (9) so that the reception structure (2) forms a suitcase closed.

10. Stroller (1) according to any one of the preceding claims, characterized in that it comprises a basket (50) which is mounted on the frame (3) and which is connected to a front leg and to a rear leg, the basket being intended to occupy an open position in a rolling position of the chassis (3) and a closed position in a closed position of the chassis (3), the basket (50 ) comprising a bottom (51) equipped with reinforcements and a seam line (52) defining a folding line along a direction parallel to an axis of rotation of the rear leg relative to the frame (3), the pivoting of the rear leg around the axis of rotation causing the basket (50) to be folded or unfolded along the folding line, the reinforcements on the one hand being coplanar in the open position, and on the other hand being superposed and extending in parallel planes in the closed position.