Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
  • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
  • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
  • B60N2/2803—Adaptations for seat belts
  • B60N2/2812—Adaptations for seat belts for securing the child to the child seat
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
  • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
  • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
  • B60N2/2803—Adaptations for seat belts
  • B60N2/2806—Adaptations for seat belts for securing the child seat to the vehicle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
  • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
  • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
  • B60N2/2803—Adaptations for seat belts
  • B60N2/2818—Adaptations for seat belts characterised by guiding means for children belts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
  • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
  • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
  • B60N2/2851—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle provided with head-rests
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
  • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
  • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
  • B60N2/2866—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle booster cushions, e.g. to lift a child to allow proper use of the conventional safety belts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
  • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
  • B60N2/26—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles for children
  • B60N2/28—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle
  • B60N2/2872—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle provided with side rests

Definitions

• Child car seat with adjustable strap guide elements are provided.
• the field of the invention is that of childcare. More specifically, the invention relates to child car seats that are intended to be installed on the passenger seats of vehicles. It relates, in particular, car seats adapted to receive children of varying sizes and / or weight, and likely to evolve to take into account the growth of a child over several years.
• the invention applies in particular to adjustable car seats, and more particularly to car seats for children over 15kg, in which the three-point safety belt of the vehicle is used to attach the child.
• the invention particularly relates to the optimization of the implementation of this three-point belt.
• Vehicle seat belts are designed by car manufacturers to effectively restrain adult passengers in the event of an impact. In order to properly secure a child in a vehicle using such a seat belt, it should be installed on a car seat for children, which allows to adapt the morphology of the child to that of the child. vehicle seat.
• the child car seats can enhance the seat of the vehicle seat to position the child properly relative to the seat belt, and in particular to ensure the precise passage of the diagonal belt of the seat belt to the seat belt. level of the child's shoulder.
• Such car seats also have guide elements of the lap belt of the safety belt, otherwise known as webbing guides.
• webbing guides In case of shock of the vehicle, the mechanical forces transmitted to the seat belt are then mainly redistributed to the structure of the car seat via the webbing guides. The mechanical forces transmitted to the body of the child, especially in the abdomen, are then reduced, thus minimizing the risk of damage to the physical integrity of the child during a crash of the vehicle.
• Such car seats are generally used from about the age of four, and their use is recommended until the age of about ten years. However, from four to ten years, the morphology of the children evolves strongly, as well in terms of size as of diverence.
• patent document EP 0 608 597 presents a car seat in which the spacing of the strap guides is adjustable in the direction of the seat width, otherwise called the Y direction.
• the strap of such a car seat can indeed slide relative to each other in the Y direction, so as to adapt the car seat to change the width of the child's pelvis over time.
• this solution ensures a better comfort for the child, ensuring the widening of the seat as it grows, it does not, however, meet all the safety requirements that must be met by abdominal strap guides. Indeed, it is important that the strap guides are always perfectly positioned with respect to the child, so that they can properly perform their role of supporting the lap belt of the safety belt, and thus maintain their effectiveness in terms redistribution of mechanical forces during an impact.
• the invention meets these needs by providing a child car seat comprising a seat carrying guiding elements of a lap strap of a seat belt of a vehicle, intended to keep the child in the seat.
• such guiding elements are movable in a first direction, referred to as the X direction, corresponding substantially to the main axis of the vehicle, and in a second direction, said direction Y, perpendicular to the direction X, the X and Y directions being substantially included in the plane of the seat.
• the invention is based on a completely new and inventive approach to adjustable child car seats.
• the invention proposes a car seat in which the guiding elements of the lap strap of a safety belt are movable in at least two directions relative to the plane of the seat, the plane of the seat being defined as a plane substantially tangent to the upper surface of the seat for supporting the child (which could also be described as substantially horizontal plane).
• the position of the low guide elements can therefore be modified both in the direction of the seat width (Y direction) and in the direction of the seat depth (X direction), so that the low guide elements can continue to ensure their role of supporting a seat belt lap belt as the child grows.
• Such low guide elements therefore allow the car seat to adapt to changes in the child's morphology, not only in terms of hip width or pelvis, but also in terms of body size or waist.
• main axis of the vehicle means the axis extending from the rear part of the vehicle (trunk side and passengers) to the front of the vehicle (motor and driver side), and vice versa.
• the low guide elements are also movable in a third direction, said direction Z, substantially vertical.
• the position of the low guide elements can then also be modified in the direction of the height (Z direction), which makes it possible to adapt more finely the positioning of the low guide elements with respect to the morphology of the child.
• the thigh circumference of the child generally increases with the width of the pelvis and the waist, so that a height adjustment (Z) of the straps guides advantageously complements a width adjustment.
• the low guide elements are then movable in three directions of space which are substantially orthogonal. According to another embodiment, the low guide elements are able to slide in guiding slots formed in the seat.
• the guide lights form a simple, robust and economical way to guide the X, Y and Z directions of the moving low guide elements.
• the guide lights comprise at least two non-aligned sections, a section extending along one of said directions or a combination of said directions.
• the various orientations of the sections of the guide lights allow the lower guide elements to follow more precisely the development of the child as and when sliding in the guide lights. Indeed, it has been found that the curve of the morphological evolution of the child between four and ten years is not linear, so that at certain stages of its growth, the waist circumference grows faster than the width. at other stages, the waistline stabilizes for continuous growth of the pelvis or hip width.
• the design of the guide lights as successive lengths of distinct lengths and directions allows optimized movement of the low strap guides according to these different stages or growth stages of the children.
• the guide lights comprise a first section extending along the direction X, and a second section extending along a combination of the X and Y directions, the second section being oriented so that the mutual spacing of the lower guide members in the Y direction increases as the lower guide members slide in said second section away from the rear portion of the seat.
• the first section in the direction X is preferably placed on the side of the rear part of the seat, that is to say on the side of the seat located near the seat back of the vehicle, or the seat back self if he understands one.
• the second section is farther than the first section of the rear portion of the seat.
• the guide lights comprise a third section extending along the direction X.
• the presence of a third section extending along the direction X extends the use of the car seat during the growth of the child.
• the car seat comprises means for adjusting the position of the low guide elements acting jointly on all the guide elements.
• Such adjustment means facilitate the use of the car seat by allowing the user to adjust the position of all the low guide elements in one movement, thus reducing the number of manipulations required for the proper installation of the seat. self.
• such a car seat comprises means for adjusting the height of the seat (Z direction), related to the position adjustment means of the low guide elements, so that an actuation means height adjustment causes the actuation means to adjust the position of the low guide elements, or vice versa.
• An adjustment in height of the seat allows to better position the torso of the child relative to the diagonal strap of the seat belt. It is advantageous to combine the height adjustment of the seat with the adjustment of the position of the lap strap guides, on the assumption that the growth of the child's torso is usually accompanied by a widening of its width. of pelvis and / or of his diverence. Thus, the number of manipulations that parents must operate to best install their child is optimized and restricted. When the parents lower the seat base (the growing child), the lower strap guides spread apart in X and Y.
• the car seat comprises a backrest carrying a headrest whose position is adjustable, and a displacement of the headrest causes the actuation means to adjust the position of the low guide elements, or vice versa.
• a headrest most often has a guiding element of the diagonal strap of the seat belt of the vehicle, also called high guide element. In moving the headrest along the backrest, to place it at the right height relative to the position of the head of the child, simultaneously moves the guide-top strap, which brings precisely the diagonal strap at the shoulder of the child.
• such a car seat comprises depth adjustment means of the seat (direction X), related to the means for adjusting the position of the low guide elements, and the actuation means of adjustment of the depth of the seat causes actuation means for adjusting the position of the low guide elements, or vice versa.
• Some seats are indeed adjustable in depth, according to the X direction, so as to position the best knee of the child compared to the front edge of the seat, and improve the comfort of the child by avoiding unpleasant feelings of ankylosis or tingling. It is therefore advantageous to combine the depth adjustment of the seat with the adjustment of the position of the lap strap guides, on the assumption that the growth of the length of the thigh of the child is most often accompanied by a growth of its pelvis width and / or its diverence. Thus, the number of manipulations that parents must operate to best install their child is optimized and restricted.
• the adjustment means comprise a worm cooperating with a connecting rod.
• Such adjustment means are simple, robust and economical. It is then sufficient for the user to screw or unscrew a button provided for this purpose on the front part of the seat to see the guides low straps move while advancing, or get closer while moving away (or operate any other movement imposed for example by the shape of the guide lights).
• such adjustment means may also implement a flat bar mechanism, such as a Peaucellier-Lipkin device, or Chebyshev horse, allowing the conversion of a circular motion to a rectilinear or pseudo-rectilinear motion .
• a flat bar mechanism such as a Peaucellier-Lipkin device, or Chebyshev horse
• the car seat comprising a backrest carrying a headrest, the headrest and / or the backrest carries (s) guide elements of a diagonal strap of a vehicle safety belt, called guiding elements.
• the high guide elements are movable relative to the headrest and / or backrest in at least one of said X and Y directions, or a combination of said X and Y directions.
• such a car seat comprises means for adjusting the position of the high guide elements acting together on all of said high guide elements.
• Such adjustment means facilitate the use of the car seat by allowing the user to adjust the position of all the high guide elements in the same movement, thereby reducing the number of manipulations required for the proper installation of the seat self.
• a movement of the headrest and / or back causes actuation means for adjusting the position of the high guide elements, or vice versa.
• the means for adjusting the position of the low guide elements also form means for adjusting the position of the high guide elements and act together on all the low and high guide elements.
• users can adjust the position of the guides high straps and guide straps down.
• This adjustment can for example be effected by moving the backrest or the headrest, or by moving the seat, or by actuating a knob or a set screw.
• Figures 1A and 1B show a schematic side view of a child car seat according to the invention
• Figures 2A and 2B show a schematic view of the top of the car seat of Figures 1A and 1B;
• Figs. 3A and 3B each show an example of a guide light shape
• FIGS. 4A and 4B show an embodiment of the adjustment means of the low belt guides in the initial position (FIG. 4A) and in the adjusted position (FIG. 4B);
• Figures 5A and 5B show an embodiment of the seat height adjustment means in the lower position ( Figure 5A) and in the upper position ( Figure 5B);
• Figures 6A and 6B show another embodiment of the seat height adjustment means in the lower position ( Figure 6A) and in the upper position ( Figure 6B);
• Figure 7 shows a block diagram of a child car seat in which the movement of the headrest induces a displacement of the low strap guides
• FIGS. 8A and 8B illustrate a profile view (FIG. 8A) and a view from above (FIG. 8B) of a return mechanism linking the displacement of the headrest to the displacement of the bottom strap guides;
• Figures 9A and 9B illustrate a sectional view of a bottom web guide provided with a guide pin cooperating with a guide slot (Figure 9A) and with an articulated mechanism (Figure 9B);
• FIGS. 10A and 10B show another embodiment of a child car seat according to the invention comprising high strap guides movable relative to the backrest and / or to the headrest between at least a first position (FIG. 10A) and a second position (Figure 10B);
• FIGS. 11A and 11B show an embodiment of the adjustment means of the high-belt guides in the initial position (FIG. 11A) and in the adjusted position (FIG. 11B);
• Figures 12A and 12B illustrate an embodiment of the adjusting means acting together on the position of the high and low webbing guides.
• the general principle of the invention is based on the adjustment, in several directions, of the position of the guide elements of the lap strap of a seat belt in a child car seat.
• the car seat comprises a seat, and a folder, possibly removable.
• the presence of such a folder is of course optional, and the invention also covers car seats comprising a seat but without a folder.
• FIG. 1A illustrates a schematic side view of a child car seat according to a first embodiment.
• a car seat 1 comprises a backrest 2, a seat 3 and low strap guides 4.
• the bottom strap guides 4 have a bearing surface 5 serving to accommodate the passage of a seat.
• the lap belt of the safety belt bears on the support surfaces 5 of the lower strap guides 4 rather than on the abdomen of the child.
• the mechanical forces imposed on the seat belt webbing are then mainly redistributed towards the structure of the car seat via the low strap guides 4, rather than towards the child's abdomen. The physical integrity of the child is thus preserved.
• FIG. 1B shows a schematic view of the profile of the bottom strap guides 4 after a displacement, represented by the arrow A, from an initial position close to the rear of the seat, as represented in FIG. position closer to the front of the seat, as shown in Figure 1B.
• Figure 2A shows a schematic view of the top of the car seat of Figure 1A wherein the bottom strap guides 4 are in the initial position, close to the back of the seat.
• FIG. 2B shows a schematic view of the top of the bottom strap guides 4 after their displacement, each represented by one of the arrows B1 and B2, from an initial position close to the rear of the seat, as represented in FIG. 2A, to a position closer to the front of the seat in which the lower webbing guides 4 are further apart than in the initial position.
• the low strap guides 4 are moving diagonally in the plane of the course along the arrows B1 and B2, whose directions are each a combination of the first direction, called X direction, and a second direction, said Y direction, this second direction corresponding to the direction of the seat width of the car seat.
• the lower strap guides can also move in a third direction, said Z direction, this third direction corresponding substantially to the direction of the height of the car seat.
• the position of the low strap guides is then variable along three substantially orthogonal space dimensions, which makes it possible to fine-tune the position of the low strap guides to the morphology of the child.
• the bottom strap guides then rise in a vertical direction, in a movement combined with that illustrated by the arrows B1 and B2 of Figure 2B, to also take into account the growth of the thigh of the child.
• the low strap guides slide in guide lights, which are composed of one or more sections. Each section is oriented in one of the directions X, Y or Z or a combination of these directions.
• the guide slots 11 may comprise a first rectilinear section 12 which extends along the direction X from the rear of the seat 3, and a second section rectilinear 13, contiguous to the first section 12 and extending along a combination of the X and Y directions.
• This second section 13 is generally oriented so that, during the sliding of the low strap guides 4 in the second section 13, the mutual spacing of the bottom web guides 4 increases along the direction Y, in the direction of the seat width.
• the bottom strap guides slide first along the first section 12 extending in the direction of the seat depth. The guides 4 strap then move away from the back of the seat to accompany the first stages of growth of the child.
• the lower strap guides 4 take the second section 13 which allows the mutual separation of the bottom strap guides 4 in the direction of the seat width, together with their movement from the back to the front of the seat.
• the guide lights 11 may have a bottom inclined relative to the plane of the seat, so that when the lower strap guides 4 slide in these slots 11, they can also be raised or lowered by compared to the seating plan.
• the portion of the guiding light 11 situated towards the rear of the seat (for example the first section referenced 12) has a bottom that is lower relative to the plane of the seat than that of the part of the light of the seat. guidance located towards the front of the seat (for example the second section referenced 13); thus, when the low strap guides 4 slide towards the front of the seat, they rise relative to the plane of the seat, and therefore have a combined movement in the X, Y and Z directions.
• the different movements of the strap guides illustrated in FIGS. 1A to 2B can be made possible by the presence of adjustment means, which make it possible to jointly adjust the position of the set of strap guides, so that the user has only one manipulation to perform to adapt the position of the low strap guides to the morphology of the child.
• FIGS. 4A and 4B show an embodiment of such adjustment means, represented in an initial position in FIG. 4A and in a position adjusted in FIG. 4B, in which the user has actuated the adjustment means in such a way that moving the bottom strap guides 4 along the guide light 11 from the initial position.
• such adjustment means comprise, for example, a worm 6 and a connecting rod 7 of variable effective length, the ends of which are referenced 8 and 9.
• the rod 7 is connected by a helical connection to the worm 6 at its first end 8, while the second end 9 of the rod 7 is connected to a guide pin 10 which is slid in the guide slot 11.
• the guide pin 10 is integral with the guides of bottom strap 4, so that the sliding of the guide post 10 in the guide slot 11 drives in translation the bottom strap guides 4 along the guide slot 11.
• the guide post 10 is secured (for example by embedding) to the second end 9 of the rod 7, and the rod 7 is telescopic so that it can vary in length (which is necessary, in the case of Figure 4A, where the axis of the guide hole 11 and the axis of the worm 6 are not parallel).
• the rod 7 slides along the worm 6 at its first end. 8, driving with it the guide pin 10 at its second end 9.
• the length of the connecting rod 7 is greater than in FIG. 4A because the guide light 11 forces the guide pin 10 to deviate from the axis of the worm screw 6.
• the variability of the effective length of the rod 7 thus allows the adjustment means to accommodate the various possible directions of the guide light 11 in the plane of the seat.
• the connecting rod 7 is no longer telescopic and the connection between the second end 9 of the connecting rod 7 and the guide pin 10 is a slide connection, the slide extending along the rod 7.
• the effective length of the rod 7 the rod 7 is thus also adjustable.
• the seat 3 is adjustable in height by means of a vis-compass system illustrated in FIGS. 5A and 5B.
• a screw 51 actuatable in rotation by a crank 52, extends below the seat 3 in one of the directions X, Y or a combination of these directions X and Y (in the embodiment of FIGS. 5B, the screw 51 extends substantially in the direction Y).
• the screw 51 cooperates with a compass 53, whose ends 531, 532 of its branches are each provided with a screw thread cooperating with the screw 51 so as to slide along the latter during the operation of the crank 52.
• the two branches of the compass 53 are interconnected at one of their ends by a pivot connection 533, which is also secured to a lower portion of the seat 3 by a screw system nut (not shown), or any other suitable means such as a weld.
• the adjustment of the seat height causes the actuation of the means for adjusting the position of the low strap guides 4.
• the rotation of the screw 51 during the adjustment of the seat height also actuates the worm 6 via a mechanism (not shown) implementing a gear system.
• the seat 3 is height-adjustable by means of a plane-contact linkage mechanism illustrated in FIGS. 6A and 6B, in which the seat 3 is composed of two upper 32 and lower 31 complementary parts, for example in the form of a trapezoid-based straight prism, and whose lower portion 31 is connected to a cable 81.
• the lower 31 and upper 32 parts cooperate via a plane support connection, the plane being inclined with respect to a horizontal plane defined by the directions X and Y.
• 6A and 6B is such that, during a traction exerted on the cable 81, the lower part 31 is guided in translation in the direction of the traction force, which results, by sliding along the plane support connection, the translational guidance of the upper portion 32 in the direction Z.
• a traction on the cable 81 drives e a height displacement of the seat 3.
• the return to a low position of the seat 3 can be achieved through a spring system (not shown).
• the seat of the car seat is of adjustable depth, a seat depth adjustment actuating the position of the adjustment means of the low strap guides. Then just adjust the depth of the seat at the height of the child so that the adjustment means act concomitantly on the position of the low strap guides. This minimizes the number of manipulations to be made to adapt the car seat to the morphology of the child.
• a return mechanism comprising a rack which, following the translational movement of the seat during the adjustment of its length, rotates a toothed wheel which in turn allows rotation to be rotated.
• the worm 6 adjusting means ( Figures 4A, 4B) via a gear system.
• the backrest 2 also has a headrest whose position is adjustable, in height, so that it is positioned at best with respect to the head of the child.
• the height displacement of the headrest actuates the means for adjusting the position of the low strap guides. It is then sufficient to adjust the position of the headrest to the size of the child so that the adjustment means act concomitantly on the position of the low strap guides.
• FIG. 7 illustrates such a principle, according to which a movement of the headrest 61 in the direction Z induces a movement of the bottom strap guides 4 in at least one of the directions X, Y and Z. This makes it possible to minimize the number of manipulations to perform to adapt the car seat to the morphology of the child.
• Such a return mechanism for actuating the adjustment means during the movement of the headrest.
• a return mechanism illustrated in Figures 8A-8B and 9A-9B, comprises a cable 71 connecting the headrest 72 to an articulated mechanism 73 located in the seat 3.
• a first portion 711 of the cable 71 extends along 2, substantially along the Z direction, from the headrest 72 to a pulley 74 cooperating with the cable 71.
• the pulley 74 can guide a second portion 712 of the cable 71 along the seat 3 along the X direction to a pivot link 731 of the articulated mechanism 73.
• This pivot connection 731 connects the first ends of two arms 732 located substantially in the plane of the seat, which extend in a combination of the X and Y directions
• Each of these arms 732 comprises, in the vicinity of its second end, at least one slot 733, intended to cooperate with a guide pin 10 of the bottom strap guides 4 so as to form a sliding pivot connection 76.
• Such a connection 76 allows on the one hand the pivoting of each arm 732 around the guide pin 10 and, on the other hand, the sliding of the arm 732 along the guide pin 10.
• Each guide pin 10 also cooperates with the guide holes 11 formed in the seat 3, which are oriented in the plane of the seat in one of the directions X or Y, or a combination of directions X and Y.
• the user By moving the headrest 72 upwards in the Z direction, the user exerts a substantially vertical traction force at the first portion 711 of the cable 71. Thanks to the pulley 74, the force substantially vertical at the first portion 711 is translated at the second portion 712 of the cable 71 into a substantially horizontal traction force in the direction X. This traction force is exerted on the pivot link 731 so as to set the articulated mechanism 73 in motion in the plane of the seat 3 in the X direction.
• the sliding pivot connection 76 between the light 733 and the guide pin 10 then makes it possible on the one hand to accommodate the change of orientation of the arms 732 in the plane of the seat as well as the change of distance between the pivot connection 731 and the guide pin 10 during the displacement of the articulated mechanism 73.
• the link 76 makes it possible to transmit to the guide pin 10 at least a part of the the force of traction imparted by the cable 71 at the pivot connection 731.
• the low strap guides 4, integral with their guide pin 10, are then moved along the guide slots 11 by virtue of the tensile force of the 71 cable generated by the user when moving the headrest 72.
• the arms 732 may comprise one or more joints, for example pivot links, between the link 731 and the link 76.
• the arms of the articulated mechanism can be telescopic in nature and have no lights.
• the link between the arms and the guide posts then consists of a simple pivot connection allowing on the one hand to accommodate the change of orientation of the arms in the plane of the seat and, on the other hand, to transmit the force pulling the cable to the guide pins.
• the telescopic nature of the arms also makes it possible to accommodate the change in distance between the guide posts and the articulated mechanism.
• the seat height adjustment means illustrated in FIGS. 6A and 6B can be combined with the mechanism of referring to Figures 8A and 8B.
• the second portion 712 of the cable 71 of Figures 8A, 8B may coincide with the pull cable 81 of Figures 6A, 6B.
• a traction made on the cable 71 makes it possible to act together on the articulated mechanism 73 (FIG. 8B), causing the guides to move downwardly, and on the lower part 31 of the seat 3 ( Figures 6A, 6B), causing a height adjustment of the seat.
• the means for adjusting the low belt guides can implement a flat bar mechanism and / or a rack mechanism and / or magnetic means.
• the headrest 72 and / or the backrest 2 carries (s) guide elements 101 of a diagonal belt strap of vehicle safety belt, also called high guide elements.
• These high guide members 101 are movable relative to the headrest 72 and the backrest 2 as shown in FIGS. 10A and 10B.
• the position of the backrest 2 and / or the headrest 72 is adjustable in the Z direction, and the adjustment of the position of the high strap guides is coupled to the height adjustment of the backrest. and / or the headrest.
• the position of the guides high straps is adjustable regardless of any height adjustment of the backrest or the headrest.
• the position of each of the high belt guides can for example be manually adjusted, by sliding along a guide rail, or by means of a control wheel arranged on the side of the car seat.
• the high guide elements 101 are connected to adjustment means 110 making it possible to jointly adjust their position with respect to the headrest 72 and the backrest 2 in a substantially plane. defined by the X and Y directions.
• These adjustment means 110 comprise a guide piece 111 which is connected to a fixed point 114 of the seat 3.
• the guide piece 111 further comprises an inclined section of guide 113 whose surface is inclined with respect to a substantially vertical plane defined on the one hand by the direction Z and, on the other hand, by one of the directions X and Y or a combination thereof.
• the high guide element 101 can slide along the inclined guide plate 113 via a sliding connection 112.
• the guide piece 111 When moving the headrest 72 or backrest 2 in the direction of the height, or in the direction Z, the guide piece 111 remains fixed relative to the seat 3, while the upper guide member 101 is driven upwards. During this upward movement (vertical direction Z), the high guide element 101 slides along the inclined guide portion 113, and thus moves relative to the headrest 72 and / or the backrest 2 in the horizontal plane. , defined by the X and Y directions. The height adjustment of the backrest 2 and / or the headrest 72 thus makes it possible to adjust the position of the high guide elements 101, both in height and in the horizontal plane.
• the positional adjustment of the high strap guides is independent of the positional adjustment of the bottom strap guides.
• FIGS. 12A and 12A According to another particular embodiment, represented by FIGS. 12A and 12A
• the high guide elements 101 carried by the backrest 2 and / or the headrest 72, are connected to the inclined guide portion 113 of the guide piece 111 by means of a sliding connection 112 formed in the inclined guide plate 113.
• the low guide elements 4 are connected to both the seat 3 and to the articulated mechanism 73 thanks to a guide pin 10 (no -retationsenté) which cooperates on the one hand with a slot 11 formed in the plane of the seat 3 and, on the other hand, with a light 733 (not shown) integrated in each of the arms 732 of the articulated mechanism 73 so forming a sliding pivot link 76 (not shown).
• the arms 732 are interconnected at a pivot link 731 to which is attached the first end of the cable 71.
• the second end of the cable 71 is connected to a fixed point 121 of the backrest 2, the backrest 2 being movable relative to the seat 3 in direction Z.
• the backrest 2 is in the low position, the low strap guides 4 are positioned towards the rear of the seat 3 and the high strap guides 101 are positioned towards the inside of the backrest 2 and / or the headrest 72, that is closer to the head of the child.
• the position of the high guide elements 101 and the low guide elements 4 is set jointly by the adjustment means 110 and the articulated mechanism 73, respectively. Indeed, on the one hand, during the upward movement of the backrest 2, the guide piece 111 remains fixed relative to the seat 3 while the high guide elements 101 are driven upwards in the direction Z.
• the high guide elements 101 thus slide along the inclined guide plate 113 via the sliding connection 112, and thus move along the backrest 2 and / or the headrest 72 in the horizontal plane defined by the directions X and Y so as to move away from the child's head and thus adapt to his height and shoulder width.
• the upward movement of the backrest 2 causes the upward movement of the fixed point to which the second end of the cable 71 is attached.
• the backrest 2 then exerts a pulling force on the cable 71 making it possible to actuate the articulated mechanism 73 and thus to adjust the position of the low guide elements 4 along the guide holes 11 formed in the seat 3 so as to adapt to the size, the familiaence and the pelvis width of the 'child.
• the movement of the backrest 2 in the direction Z thus makes it possible to jointly adjust the position of the high guide elements 101 and the low guide elements 4.
• the high guide elements 101 are carried by the headrest 72, the position of the latter being adjustable in height relative to the backrest 2, and the second end of the cable 71 is connected. at a fixed point of the headrest 72 rather than at a fixed point 121 of the backrest 2.
• a movement of the headrest 72 in the Z direction by the user then makes it possible on the one hand to exert traction on the cable 71 of in order to actuate the articulated mechanism 73, and thus to adjust the position of the low guide elements 4, and, on the other hand, to slide the high guide elements 101 along the inclined guide portion 113 so as to adjust the position of the high guide elements 101 along the headrest 72 in the horizontal plane defined by the X and Y directions.
• the displacement of the headrest 72 according to the Z direction thus makes it possible to jointly adjust the position of the high guide elements 101 and the low guide elements 4.
• a knob or a set screw for operating jointly the adjustment mechanisms of the high and low strap guides.
• a knob or adjusting screw with a slider and a scale corresponding to a characteristic of the child such as its height, age or weight
• the user can, in a single movement, adjust jointly and automatically the position of the high and low webbing guides by positioning the cursor at the level of the graduation adapted to his child.
• a knob or adjustment wheel can also actuate means for adjusting the height of the backrest and / or the headrest and the height of the seat according to the position of the cursor on the graduation.
• the user can adjust the position of the seat, backrest, headrest and strap guides up and down to the size and build of his child.
• the means for adjusting the height of the backrest and / or the headrest may comprise a rack and pinion mechanism or any other known mechanism for adjusting the height of a backrest and / or a headrest relative to a backrest.
• the seat height adjustment means may comprise a screw-compass system, as shown in the embodiment of FIGS. 5A and 5B, or any other means already known for adjusting the height of a seat.

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• Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Child & Adolescent Psychology (AREA)
• General Health & Medical Sciences (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Seats For Vehicles (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=53794354

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (2)

Family Cites Families (14)

• 2015
  • 2015-05-06 FR FR1554057A patent/FR3035833A1/fr active Pending
  • 2015-10-06 FR FR1559511A patent/FR3035832B1/fr not_active Expired - Fee Related
• 2016
  • 2016-05-03 WO PCT/EP2016/059944 patent/WO2016177755A1/fr not_active Ceased
  • 2016-05-03 EP EP16720137.5A patent/EP3292019A1/de not_active Withdrawn

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