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
  • B60N2/2866—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
  • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
  • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
  • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
• • 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
• • 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
  • B60N2/2821—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle having a seat and a base part
• • 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
  • B60N2/2875—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle inclinable, as a whole or partially
• • 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
  • B60N2/2887—Fixation to a transversal anchorage bar, e.g. isofix
• • 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

Definitions

• 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 evolution of a child over several months or years. Thus, the invention applies to adjustable car seats.
• the invention applies mainly to Group 1 car seats, for children whose weight is between 9 and 18 kg, as well as, in some embodiments, car seats said groups 1/2/3, allowing the evolution of the Group 1 car seat, for children weighing between 9 and 18 kg, to the Group 2/3 category for children weighing between 15 and 36 kg.
• Groupe 1/2/3 car seats suitable for both small and large children, that is to say, evolving, are known. These car seats must be adapted to different types of restraint, namely a harness harness secured to the car seat for the youngest children (Group 1) and, from the age of three years, the use of the three belt points of the car to attach the child (Group 2/3).
• the invention relates in particular to the optimization of the implementation of this harness strap (most often a five-point harness).
• the car seats are generally adjustable, to adapt to the size and morphology of the child.
• the upper part of the harness is placed precisely at the level of the shoulders of the child.
• the back of the car seat incorporates mechanisms for adjusting the height of the harness.
• the headrest also adjustable in height.
• the upper attachment points of the harness can take several positions, depending on the size of the child.
• shoulder harness the term “shoulder straps” includes straps forming shoulder straps (hereinafter also referred to as “high straps”) and belt straps (hereinafter also referred to as "side straps”).
• the harness is a five-point harness, since it includes two shoulder straps, each fixed at two points of the car seat 1, four fixing points, and a crotch tab (also called “low strap” afterwards). harness), attached at a point in the car seat.
• the seat back there is provided in the seat back several series of slots (for example three), located at different heights of the seat back, allowing the passage of the upper straps of the harness.
• the car seat user eg the parent chooses the series of slots in which the top harness straps should be positioned to position them at best compared to the shoulders of the child.
• the adjustment of the height of the harness is done using a guide of the strap (sliding plate and / or rack).
• the backrest must be relatively hollow to integrate these mechanisms for adjusting the height of the harness. This results in a weakening of the overall structure of the seat, which must be compensated by lateral reinforcements which increase the weight of the car seat.
• the invention particularly aims to overcome these disadvantages.
• an object of the invention is to provide a car seat for a more effective and secure maintenance of a child, especially in case of shock or deceleration.
• an object of the invention is to provide such a car seat, ensuring a more effective positioning of the harness strap.
• a child car seat comprising a seat adjustable in height between at least two positions, so as to place the child in a appropriate position relative to a harness placed in said car seat and intended to keep the child in said seat.
• a seat also comprises a backrest carrying guide elements of the upper straps of the harness, such guide elements being fixed relative to the backrest.
• the harness is always placed optimally, since the position of the head and shoulders of the child relative to the upper part of the harness does not change.
• the head and the shoulders of the child are thus placed in a correct way, whatever the size of the child, by displacing the seat in height.
• such a car seat can also include a backrest, a headrest, and side protections to protect the chest of the child in case of shock. Thanks to the height adjustment of the seat cushion, such protection elements (headrest and side protections) are always positioned in relation to the child's head and thorax, which increases its safety in case of impact or deceleration.
• adjusting the seat height allows to overcome the adjustment of the harness height.
• the harness remains fixed in its upper part (ie the position of the upper straps of the harness is fixed relative to the backrest).
• This increases the safety of the car seat, providing a more rigid backrest, it is no longer necessary that it hosts a mechanism for adjusting the height of the harness.
• the weakening of the seat structure caused by the presence of a "Hole” in the backrest is usually compensated by side reinforcements, which weigh down the seat.
• the height adjustment of the seat which eliminates this "hole” in the folder, therefore allows to better distribute the efforts and to obtain a lighter car seat.
• such a seat can also be equipped with securing clamps, for hanging the seat to hooking loops provided for this purpose in the vehicle.
• the seat carries guiding elements of lateral straps of said harness.
• the backrest carries guide elements of lateral straps of the harness, and the seat carries means of accompanying movement of these side straps.
• the upper and lateral straps of the harness are fixed to the backrest, and the low strap of the harness is fixed to the seat cushion.
• the seat itself is advantageously provided with means of accompanying the movement of these lateral straps, in order to avoid in particular that they can for example be pinched between the backrest and the seat when moving in height of the latter.
• recesses are provided on the rear portion of the seat, in contact with the backrest, in which the side straps can easily slide when the seat moves in height, without the risk of jamming between the backrest and the backrest. seated.
• the depth of the seat can be adjustable.
• the seat can be adapted to the size of the child, including the length of the legs thereof.
• the settings of the height and depth of the seat can be linked.
• the inclination of the seat is adjustable, and the settings of the height and inclination of said seat are linked.
• said adjustments implement at least one of the elements belonging to the group comprising rods, cams, worms.
• the adjustment of the height of the seat uses at least two cams or two links located respectively at the front and rear of said seat, and the amplitude of the rod or the rear cam is smaller than that of the link or the front cam, so that the lifting of the seat causes it to tilt backwards.
• FIG. 2A and 2B illustrate a second example of seat height adjustment using a compass and a worm
• - Figures 3A and 3B illustrate an alternative embodiment of the height adjustment of the seat based on screws whose rotation allows to raise the front part of the seat
• FIG. 4 shows an alternative mechanism for adjusting the height of the seat based on a drum having a plurality of slots of varying heights
• FIG. 5A and 5B illustrate another variant in which the height of the seat is adjustable by means of straps
• FIG. 6 shows schematically the principle of modification of the inclination and the depth of the seat correlated to the height adjustment of the seat;
• FIGS. 7A and 7B show a first example of a mechanism for lifting the cam-based seat, which jointly causes a modification of its inclination
• FIGS. 8A and 8B illustrate a second example of lifting mechanism of the seat based on rods jointly causing a modification of its inclination.
• the invention therefore proposes a new type of child car seats, ensuring effective and safe positioning of the harness, regardless of the size of the child.
• the seat backrest 11 is equipped with a headrest 12 and guide elements 13 of the upper harness straps fixed by report to the file. These guide-straps 13 have been designed and placed on the backrest 11 in an optimal position to ensure proper positioning of the five-point fastening harness relative to the shoulders of the child.
• the seat 15 is adjustable in height, so as to adjust the distance between the seat and the headrest, the size of the child.
• the seat When the child is small, the seat is placed in the up position. Conversely, for a large child, the seat 15 is brought down.
• three air chambers 14 are disposed under the seat 15 and can be inflated to enhance the seat 15.
• the three air chambers are inflated, as illustrated in Figure 1B, and the seat 15 is then at its maximum height.
• the seat 15 is then at its maximum height.
• only one tube is inflated, as shown in Figure 1C.
• An intermediate position of the seat can be obtained by inflating two of the three air chambers.
• the straps are each fixed at two points 13, 16 of the car seat 1, four fixing points, and the crotch tab 17 is fixed at a point of the car seat, so that the harness is of the five-point harness type.
• the shoulder straps each comprise a portion (upper strap) for holding the torso of the child and a portion (side strap) forming a waistband portion ventral.
• the straps and the crotch tab 17 (also called the low strap) are combined during the restraint of a child in a harness loop comprising a button to control the opening of the harness.
• the guide elements 16 of the side straps of the harness, as well as the point of attachment of the crotch tab 17 of the harness are formed on the seat 15.
• the straps generally comprise two sleeves (not shown) forming sleeves around the straps and comprising a fabric having a high coefficient of friction to retain the child in case of shock.
• An end portion 18 of the harness visible in Figure 1A, allows a user to adjust the length of the shoulder straps of the harness. To reduce the length of the straps, for example pulling on the end portion 18 of the harness and to relax and increase the length of the straps, for example pressing a button located on the base of the crotch tab 17.
• FIGS. 2A and 2B show another embodiment of the adjustment in height of the seat 15.
• the seat 15 is secured, in its lower part, to the upper end of a compass 26.
• the ends of the two branches of this compass 26 can move along a screw 27, located between the base 19 of the car seat and the seat 15.
• a crank 23 is placed at the end of the screw 27.
• the car seat has a backrest 11 equipped with a headrest 12, in which are provided passages 13 of the upper straps of the harness.
• the guide elements of the lateral straps have not been shown, but can be carried by the seat 15 or by the back 11.
• the lower attachment point of the harness has not been shown, but it is worn by the seat 15.
• the seat 15 has in its front part, on each side, a housing for accommodating a screw 37.
• the seat 15 thus has a particular shape, in which the dressing housing screw 37 also acts as a side protection element for the child.
• actuation 38 of wheels 36 located at the base 19 of the car seat it causes the rise 39 of the seat 15, the screws 37 cooperating with corresponding threads of the screw housing of the seat.
• Two wheels 36 were illustrated in Figures 3A and 3B. Alternatively, one could also provide to secure the movement of the two screws 37, so as to ensure a horizontal positioning of the seat 15, in any setting position.
• FIG 4 shows another embodiment of the lifting mechanism of the seat 15. For the sake of simplification, it is not shown the entire car seat, which is similar to that of the other figures.
• each series 46 of slots comprises four slots of different heights, so that the seat 15 can take four different positions in height.
• the drum 40 is mounted under the seat 15 so as to be pivotable relative thereto.
• the base 19 of the car seat comprises a central hub to which are connected four arms 47 provided at their ends with stabilizing feet. These four arms are angularly spaced by about 90 °.
• slot 46i to 46 4 of each series 46 of slots cooperates with each of the arms 47 of the base 19: thus, one adjusts the height of the seat 15.
• the seat is in the highest position.
• the four largest slots 46i slide on the arms 47, the seat is in the lowest position.
• the slots of intermediate sizes 46 2 and 46 3 make it possible to obtain two other seat heights.
• FIGS. 5A and 5B show yet another alternative embodiment of the mechanism for adjusting the height of the seat 15.
• the seat 15 is supported by two straps 50 and 51.
• the adjustment of the height of the seat 15 is performed by varying the length of the support straps 50 and 51. Openings are provided on the side side of the car seat, to allow the user access to the support straps 50 and 51, which it can adjust the length, to adjust the height of the seat 15.
• the seat may optionally be equipped with Isofix® forceps (not visible in FIGS. 1 to 5, 7 and 7). 8, but shown schematically in Figure 6, reference 20), which keep the backrest 11 pressed against the vehicle backrest.
• the fixing points of the side straps may be provided on the backrest or on the seat.
• the lower attachment point of the harness is arranged on the seat.
• FIGS. 6 to 8 An embodiment of the invention is now presented in connection with FIGS. 6 to 8 in which the adjustment of the height of the seat is accompanied by an adjustment of its inclination and / or its depth.
• the front portion of the seat forms a greater angle with the horizontal in the case where the seat is in the up position.
• FIG. 6 there is shown schematically the upper part of the seat, equipped with an anti-submarine hump 21, respectively in a high position and in a low position of the seat.
• the seat can therefore take at least two distinct positions in height H A , H B. Several intermediate positions can of course be planned. The adjustment between the two extreme positions can also be continuous.
• the seat therefore has a hollow 22, at the level of the child's buttocks. Its inclination to A , a B can also be adjusted.
• the depth P A , PB of the seat is also adjustable, to better adapt to the size of the child.
• the different settings can be independent, an interesting approach is to link them to each other.
• the change from the height H A to the height H B automatically causes the passage from the depth P A to the depth P B and / or the passage from the inclination A to the inclination a B.
• These different movements can be controlled by a manual action, for example using a crank or a button. In other embodiments, these displacements can be motorized.
• They can for example implement rods, cams, worms, racks, gears, ...
• the seat 15, having an anti-submarining hump 21 (optional), is mounted on two cams, a front cam 31 and a rear cam 32.
• These two cams 31, 32 are integral with the same axis 33, adapted to to move in rotation (arrow 34), for example by means of a manual manipulation of a crank or a button, not shown in the figure.
• the rotation 34 of the axis 33 causes the cams 31 and 32 to rotate, causing the seat 15 to rise.
• the front cam 31 is of greater amplitude than the rear cam 32, so that, in addition to the lifting of the seat 15, the rotation of the cams 31, 32 also causes its inclination ⁇ , makes the difference in amplitude ⁇ between the two cams.
• the two front cams 31 and rear 32 are of the same amplitude, so that their rotation causes the adjustment of the height of the seat, but not its inclination, which remains unchanged.
• FIG. 7A thus illustrates a first low position of the seat 15, adapted to a large child, in which the inclination of the seat is substantially zero.
• Figure 7B illustrates a second high position of the seat 15, adapted to a child of small size, in which the inclination of the seat is of value ⁇ .
• FIGs 8A and 8B illustrate another embodiment, in which the lifting of the seat 15 is by means of rods, namely a front link 41 located under the front part of the seat 15, and a rear link 42 , located under the rear portion of the seat 15.
• the front link 41 is substantially located under the anti-submarining hump 21 (optional).
• the anti-submarining hump 21 (optional) is suitably placed, depending on the morphology of the child transported.
• FIG. 8A thus illustrates a first low position of the seat 15, adapted to a large child, in which the inclination of the seat is substantially zero.
• Figure 8B illustrates a second high position of the seat 15, adapted to a child of small size, wherein the inclination of the seat is of value ⁇ .
• FIGS. 7A-7B and 8A-8B are thus designed so that the passage of the seat 15 from a height H A to a height H B automatically causes the transition from inclination A to inclination a B.
• the rods 41 and 42 may be provided of identical size, so that does not change the inclination of the seat when adjusting its height.
• An adjustment mechanism of the inclination of the seat can be provided, which allows in particular to extend the child when he is asleep, regardless of the height adjustment of the seat.
• the height adjustment of the seat eliminates the adjustment of the harness height (the harness is fixed in its upper part).
• the backrest is thus more rigid since it is no longer necessary for it to include a housing of the height adjustment mechanism of the harness).

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

Applications Claiming Priority (3)

Publications (1)

Family

ID=48741405

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (8)

Family Cites Families (26)

• 2012
  • 2012-10-08 FR FR1259576A patent/FR2996501A1/fr active Pending
• 2013
  • 2013-04-11 FR FR1353301A patent/FR2996502B1/fr not_active Expired - Fee Related
  • 2013-10-07 WO PCT/EP2013/070859 patent/WO2014056859A1/fr active Application Filing
  • 2013-10-07 EP EP13774146.8A patent/EP2903856A1/de not_active Withdrawn
  • 2013-10-07 CN CN201380052452.8A patent/CN104736384B/zh active Active
  • 2013-10-07 US US14/399,102 patent/US9604554B2/en not_active Expired - Fee Related

Non-Patent Citations (2)

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