FR2957312A1 - Safety seat for motor vehicle by infant, has pairs of two fixation elements distributed symmetrically, so that one of pairs of first fixation element cooperate with other pair of first fixation elements in back position to road - Google Patents

Abstract

The seat has a spud (11) integrated to the seat of a vehicle in a single installation position. An armchair (12) is provided with a base (14) and a backrest (13) and takes front position and back position with respect to the spud. Pairs of two fixation elements are distributed symmetrically, so that one of the pairs of first fixation element cooperate with other pair of first fixation elements in the back position to the road, where the latter pair of first fixation element cooperate with a first pair of second fixation elements.

Description

Child car seat, which can take a position facing the road and a position back to the road. FIELD OF THE DISCLOSURE The field of the invention is that of childcare. More specifically, the invention relates to car seats for children, intended to be installed in particular on the seats of motor vehicles, which can take at least two positions, a position "back to the road" and a position "facing the road". 2. Prior art There are many types of car seats for children, or car seats, which are adapted to the different ages of the child. Among these car seats, we know including car seats called "group 0+", which are adapted and approved for children since birth until they weigh about 13 pounds. These car seats are intended to be installed in a position "back to the road", the baby facing the opposite direction to the direction of advancement of the vehicle. They allow the child to be placed in a semi-sitting (or semi-recumbent) position, in which the child is inclined enough so that the weight of his head is not supported entirely by his neck and back. Indeed, the back and neck of children of this age are not yet strong enough to withstand the weight of the head for a long time. Also known car seats called "group 1", which are adapted and approved for children weighing between 9 and 18 kilos. The children are then installed in these car seats in a sitting position and "facing the road", facing the direction of advancement of the vehicle.

Some car seats can be used as "group 0 +" or "group 1" depending on the position in which they are installed. Such car seats can thus be installed in a position facing the road such that the child can be seated (use in "group 1") and in a position back to the road, such that the baby can be semi-sitting (use in "0+ group").

Generally, these car seats implement a pivoting system, the chair can rotate relative to the base, which remains fixed on the vehicle seat. These systems are relatively complex to implement, in practice, and therefore expensive.

Moreover, these car seats require specific means to maintain the seat on the base safely, in both positions. 3. OBJECTIVES OF THE INVENTION The object of the invention is notably to overcome these disadvantages of the prior art.

More specifically, an object of the invention is to provide a car seat that can be used, optionally, in a "Group 1" approved configuration, facing the road, or in a "Group 0+" homologated configuration, back to the road, and that is simple and inexpensive to manufacture and implement. 4. Summary of the Invention These and other objectives that will appear later are achieved with the aid of a child car seat, comprising: - a base, adapted to be secured to the seat of a vehicle in a single installation position, and - an armchair, comprising a seat and a backrest, and which can take at least two positions relative to said base, a position facing the road and a position back to the road. According to the invention, said base has at least four first fixing elements, comprising a first pair and a second pair of first fixing elements, able to cooperate with at least four complementary second elements provided under the seat of said chair, comprising a first pair and a second pair of second attachment members, said first and second attachment members being symmetrically distributed such that: - in said road-facing position, the first pair of first fasteners cooperate with the first pair of second fasteners, and the second pair of first fasteners cooperate with the second pair of second fasteners; in said back-to-road position, the first pair of first fasteners cooperate with the second pair of second fasteners, and the second pair of first fasteners cooperate with the first pair of second fasteners. Thus, it is possible, simply and effectively, to go from a position back to the road to a position facing the road, and vice versa. According to a particular embodiment of the invention, said first fastening elements are movable male elements, and said second fastening elements have openings, with which said male elements can cooperate in two directions of insertion, respectively corresponding to the facing the road and back to the road. This allows effective attachment in both positions, for example with the same mechanism to control the movable male elements. According to a particular aspect of the invention, said base has a bevelled section, and comprises a rear face, intended to come into contact with the back of the vehicle seat and defining a bearing plane, and a front face, the surface of said rear face being greater than the surface of said front face, said back of the car seat extending in the extension of said support plane, when said car seat is in the position facing the road, and the end of said seat coming into said support plane, when said car seat is in the position back to the road. This particular form of the base makes it possible to provide a reception surface of the chair that is substantially flat and, if necessary, to improve safety. For this purpose, said rear face may for example have a height greater than 10 cm, ensuring at least partly an anti-rebound function, especially when said car seat is in the rearward position to the road.

According to a particular embodiment, said base comprises a central element for guiding and / or assisting the placement of said chair in one or other of said positions back to the road or facing the road. This allows an easy maneuver, avoiding in particular trial and error 5 to correctly position the chair relative to the base, in one or the other positions back to the road or facing the road. In this case, it can be provided that said chair can move a predetermined height along the axis of said central element, to move from a low locking position to a high position of rotation of the chair, to move from one to the other. at the other of said positions back to the road or facing the road. This prevents the separation of the chair and the base, and further simplify handling. According to another particular aspect of the invention, the seat may comprise unique means for actuating said fastening elements, for example in the form of a handle controlling the sliding displacement of all said first fastening elements. In this case, said handle may for example cooperate with first holding means in a release position of said first fastening elements, when said handle is in an unlocking position and said chair is in place on said base. These first means provide a first memory function, hereinafter referred to as "pre-memory". Furthermore, said handle can cooperate with second holding means in a release position of said first fixing means, when said handle is in an unlocking position and said chair is remote from said base. These means provide a second memory function. The invention also relates to the bases for child car seats, implementing fixing means as described above. 5. List of Figures Other features and advantages of the invention will appear more clearly on reading the following description of an embodiment, given by way of a simple illustrative and nonlimiting example, and the appended drawings, among which: - Figures la and lb schematically illustrate a car seat according to the invention, respectively in the positions facing the road and back to the road; FIG. 2 diagrammatically and in perspective shows an example of a base according to the invention; FIG. 3 diagrammatically and in perspective shows the base of FIG. 2, receiving the corresponding chair (only a portion of the structure of which is shown in order to clearly distinguish the hooking elements), in the back position of FIG. the road ; - Figures 4a and 4b show schematically the inside of the base of Figure 3 (the lower part has been removed), respectively when the handle is in the locked position and in the unlocked position; FIG. 5 is a partial, schematic enlarged view of the area 42 surrounded by a circle in FIG. 4b; FIGS. 6a to 6c are simplified, schematic and partial views, in section, of the base of FIGS. 4a and 4b, and of a lower portion of the chair, illustrating the operation of the holding means in the release position, also called memory clips and pre-memory clips. 6. Description of an embodiment of the invention 6.1. Principle of the invention The invention proposes a new type of child car seat, which can take a position back to the road and a position facing the road, depending on the needs, which is particularly simple and effective to implement.

Indeed, there is provided, according to the invention, at least four sets of attachment, or locking, on the base and the chair respectively. Each fixing assembly comprises a first fastening element integral with the base and a second complementary fastening element integral with the chair, and more specifically with the lower face of its seat. In the embodiment described below, the first fastening elements of the base are male elements, also called fingers forming bolts, and movable in a substantially horizontal plane. The second securing elements integral with the seat are therefore, in this case, female elements, also called housings, forming latches, and adapted so that they can cooperate with the male elements in both positions of the chair. For this, the housing has a light that the fingers can cross in both directions (one could also provide symmetrical blind holes). Other reversible fixing means, or locking, can of course be implemented. In particular, it is possible to reverse the female and male elements. The male elements are at least four in number, as are the female elements. They are distributed in at least two pairs, a first pair close to the backrest and a second pair close to the end of the seat opposite the backrest. Likewise, the female elements are distributed in at least two pairs, a first pair close to the rear part of the base, and a second pair close to the front part of the base. Depending on the position of the chair, the pairs of male elements cooperate with different pairs of female elements: in the forward-facing position, the first pair of female elements receives the first pair of male elements, and the second pair of female elements receives the first pair of male elements; pair of female elements receives the second pair of male elements; - In the reverse position to the road, the first pair of female elements receives the second pair of male elements, and the second pair of female elements receives the first pair of male elements. The pairs of male and female elements are therefore designed and distributed symmetrically, to be used indifferently in one or the other of the positions. 6.2. Embodiment As seen in the simplified example of Figures 1a and 1b, the base 11 has, in the illustrated embodiment, a bevelled section. Its rear face 111 (that is to say the face intended to come into contact with the vehicle back) is therefore thicker (and thus has a larger surface) than the face 112 facing forward. A first advantage of this approach is that it compensates, at least in part, the inclination of the vehicle seat, so that the upper portion 113 of the base extends substantially horizontally.

The rear face 111 carries, typically, Isofix forceps 114, intended to be secured to complementary hooks provided for this purpose on most vehicles. The chair 12 of the car seat comprises a backrest 13 and a seat 14. As seen in these figures, the female fasteners 151 and 152 mounted under the lower face 141 of the seat 14 are distributed so as to cooperate with complementary male fastening elements of the base 11 different depending on the position of the chair 12. Thus, the male fastening element near the rear face 111 of the base (not shown), cooperates with the female element 151 in the position facing the road (Figure la), and with the female fastener 152 in the position back to the road (Figure lb). Furthermore, preferably, these different fastening elements are distributed so that: - in the position facing the road (Figure la), the rear face 131 of the backrest 13 is substantially in the plane 16 defined by the rear face 111 of the base. Thus, there is a substantially continuous surface, and important, coming into contact with the vehicle backrest; - In the position back to the road (Figure lb), the end 142 of the seat is also placed substantially in this plane 16, still to provide a large bearing surface, combining the rear face 111 of the base and the end 142 of the seat 14. This ensures an anti-rebound function of the car seat, following an impact, due to sudden braking or accident for example. Note that in some embodiments, the chair 12 can be tilted, at least in one of the positions. In this case, the back of the back 131 and / or the end 142 of the seat can be shaped to maximize, in all tilting positions, the bearing surface against the backrest. As can be seen in FIG. 2, which shows an example of a base 11, viewed from above, the upper surface 113 thereof has four openings, two openings 211 and 212, in the vicinity of the rear face 111, and two openings 221 and 222, in the vicinity of the front face 112. It is through these openings that will pass the integral fastening elements of the chair, in one or the other position back to the road or facing the road (Figure 3). The upper part 113 of the base also has a central element 23, in the form of a central cylindrical portion in this example, providing a function of guiding and / or assisting the placement of the chair. This element is optional, and not necessary for the implementation of the invention in its various embodiments. This central element 23 is placed in the center of the rectangle defined by the openings 211, 212, 221 and 222. The seat 14 is equipped with a complementary central piece 32 (which is distinguished in particular in Figure 3). This central element 23 makes it possible to guarantee that the fastening elements of the chair are well opposite the corresponding openings, without the user having to fumble in order to find the right position. It is not, however, a rotation system such as those already known, since, as will become clearer later, the user must lift the chair, to extract the male fasteners of the openings, then move the chair to the desired position. In some cases, the central element 23 may be a simple guide, or keying, on which must first be placed the chair, to then finalize the establishment. In this case, the central element 23 may be frustoconical. In the embodiment illustrated in Figure 2, it is a cylindrical member. An additional means can be provided, preventing complete disengagement of the chair and the base, for example, by equipping the upper part of the central element 23 with a flange forming a stop. This can facilitate handling, and avoid disconnection and undesirable use of the chair without the base. In Figure 3, the introduction of the chair is shown on the base 11. For ease of understanding, it shows only a portion 31 of the chair structure, for viewing the fasteners. The portion 31 of structure (and therefore the chair) is here being installed, that is to say that the cylindrical portion 32 ensures, in combination with the central element 23 of the base, guiding and guarantees that the fasteners are opposite the openings 211, 212, 221 and 222 of the base 11, but the final placement is not yet carried out. There are indeed the attachment elements extending under the seat of the chair, respectively 311, 312, 321 and 322. In this embodiment, it is female elements, extending vertically, and having 33. In other words, the female elements form in this example housings, or rings, and the male elements forming in this example fingers which will be described later can be introduced into these housings, to cross them, in both directions. In the position of Figure 3, the user supports the chair, which has been slightly raised, following the guidance imposed by the central element 23 and the complementary element 32. It is in this raised position that it It is possible to move the chair relative to the base, from the position back to the road to the position facing the road, and vice versa. Then, the user inserts the female fasteners 311, 312, 321 and 322 in the corresponding openings 211, 212, 221 and 222. Once this insertion has been made, the definitive locking can be carried out by means of the handle 34 in this embodiment, as explained in more detail below. Figures 4a and 4b illustrate the interior of the base 11, and more specifically an upper half-shell thereof, the base being then completed by a lower half-shell secured to the upper half-shell. The rear face 111 of the base thus has a handle 34, movable between a locked position (FIG. 4a) in which it is preferably retracted inside the base 11, and an unlocking position (FIG. 4b), in which it extends beyond the rear face of the base. This handle 34 ensures the sliding movement of a locking / unlocking assembly 41 comprising in particular the four male fastening elements, or fingers, 411, 412, 413 and 414 (the fourth element 414 is not visible in these figures). As can be seen in FIGS. 4a and 4b, the "front" fingers 411 and 412 circulate, under the action of the handle 34, in the recesses 415 and 416 connected to the seat cushion (in FIGS. 4b, the seat is present on the base). Similar systems are provided for the "back" fingers 413 and 414. When the handle 34 is pulled, or moved backward, (Fig. 4b), the fingers 411 to 414 are shifted backward, and released. corresponding housing, which allows to lift, then move, the chair. In the illustrated embodiment, specific means are provided for holding the fastening means 411 to 414 in the unlocked position, or release, allowing removal and then insertion of the second attachment means of the chair.

More precisely, in the illustrated embodiment, provision is made for two first holding means in the release (or unlocked) position, or pre-memory clips, 4171 and 4172, active when the handle 34 is pulled out, or output, but that the chair has not yet been detached from the base.

There are also provided second holding means in the release position, in the form of four memory clips 4181 to 4184, respectively associated with each of the fingers 411 to 414. The presence of four memory clips ensures that when locking the first four fastening elements will be firmly attached to the four second fastening elements.

As illustrated in Figure 5, which is an enlarged partial view of the area 42 of Figure 4b, the clip 4182 is supported on a protrusion 51, when the handle is out (Figure 4b). The operating principle of these pre-memory and memory clips is explained in more detail below, in view of the figures in simplified section 6a to 6c.

In these Figures 6a to 6c, there is shown the base 11 and the lower portion of the seat 14 (or a tray supporting this seat, according to the embodiments). In Figure 6a, the system is in the locked position, and the holding means in the release position, or memory, are inactive. The handle 34 is retracted inside the base. The chair is thus secured to the base, by means of the first fastening elements, or locking fingers, 411 and 414. The pre-memory clips 416 and the memory clips 4181 and 4183 are inactive, and their ends extend in the void.

When pulling the handle 34, to move into the unlocked position, as shown in Figure 6b, the pre-memory clip 416 is supported on a stop 61 integral with the base 11. The 4161 end of the clip pre-memory 416 is adapted to oppose the return of the handle 34 (except action of the user to push on this handle, as indicated later) and therefore to oppose the return of the various elements to which it is linked, in the locked position. At the same time, the memory clips 4181 and 4183 come to bear, and are therefore constrained, on the second fastening elements 311 and 321.

However, they are inactive as long as the chair has not been lifted, and therefore the housing of the locking fingers, are always inside the base. When raising the chair, it is in the position shown in Figure 6c, wherein the pre-memory clip 416 becomes inactive, since it is no longer in contact with the stop 61. The memory clips 4181 and 4183 then become active, coming into stress on shoulders 62 and 63 provided for this purpose in the base. FIG. 5 illustrates more precisely an example of such a shoulder, in the form of the protrusion 51. The unlocking of these memory clips 4181 to 4184 will occur when the chair is put back in place on the base, and that the second fasteners 311, 3 21 will be reintroduced into the base. These push the memory clips 4181 to 4184, which are then no longer against the shoulders 62 and 63 and are found in the position of Figure 6b. It is then possible to ensure the locking, by pushing the handle 34, so as to release the end 4161 of the pre-memory clip 416 of the stop 61, to resume the locked position of Figure 6a.

Claims (10)

REVENDICATIONS1. Child car seat, comprising: - a base, adapted to be secured to the seat of a vehicle in a single installation position, and - an armchair, comprising a seat and a backrest, and which can take at least two positions relative to at said base, a position facing the road and a position back to the road, characterized in that said base has at least four first fixing elements, comprising a first pair and a second pair of first fastening elements, able to cooperate with at least four second complementary elements provided under the seat of said chair, comprising a first pair and a second pair of second fixing elements, said first and second fixing elements being symmetrically distributed so that: - in said position facing the the first pair of first fasteners cooperates with the first pair of second fasteners, and the second pair of pair of first fasteners cooperate with the second pair of second fasteners; in said back-to-road position, the first pair of first fasteners cooperate with the second pair of second fasteners, and the second pair of first fasteners cooperate with the first pair of second fasteners. 2. A car seat according to claim 1, characterized in that said first fastening elements are movable male elements, and in that said second fastening elements have openings, with which said male elements can cooperate in two directions of introduction. , respectively corresponding to the position facing the road and the position back to the road. 3. car seat according to any one of claims 1 and 2, characterized in that said base has a beveled section, and comprises a rear face, adapted to come into contact with the vehicle seat back and defining a support plane , and a front face, the surface of said rear face being greater than the surface of said front face, said seat back extending in the extension of said support plane, when said car seat is in the position facing the route, and the end of said seat coming into said support plane, when said car seat is in the position back to the road. 4. Car seat according to claim 3, characterized in that said rear face has a height greater than 10 cm, ensuring at least partly an anti-rebound function when said car seat is in the position back to the road. 5. car seat according to any one of claims 1 to 4, characterized in that said base comprises a central element for guiding and / or assisting the placement of said chair in one or other of said positions back to the road or facing the road. 6. car seat according to claim 5, characterized in that said chair can move a predetermined height along the axis of said central element, to move from a low locking position to a high position of rotation of the chair, to pass from one to the other of said positions back to the road or facing the road. Car seat according to any one of claims 1 to 6, characterized in that it comprises unique means for actuating said fixing elements. 8. Car seat according to claim 7, characterized in that said actuating means comprise a handle controlling the sliding displacement of all of said first fastening elements. 9. Car seat according to claim 8, characterized in that said handle cooperates with first holding means in a release position of said first fastening elements, when said handle is in an unlocked position and said chair is in place on said base. 10. Car seat according to any one of claims 8 and 9, characterized in that said handle cooperates with second holding means in a release position of said first fixing means, when said handle is in an unlocked position and that said chair is remote from said base.