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
  • B60N2/2857—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle characterised by the peculiar orientation of the child
  • B60N2/286—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle characterised by the peculiar orientation of the child forward facing
• • 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
  • B60N2/2857—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle characterised by the peculiar orientation of the child
  • B60N2/2863—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle characterised by the peculiar orientation of the child backward facing
• • 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
  • B60N2/2884—Seats readily mountable on, and dismountable from, existing seats or other parts of the vehicle with protection systems against abnormal g-forces

Definitions

• the present invention relates to a child's vehicle safety chair which includes a chassis which is securable in a vehicle, for example in a vehicle seat, a seat shell which has a seat surface, a back support surface and preferably also side support surfaces for a child placed in the seat shell, and an adjustment device by means of which the seat shell is adjustably secured in the chassis.
• the adjustment device is often designed in such a manner that the seat shell may be pivoted about a horizontal axis which is transverse in relation to the vehicle between a relatively upright sitting position and a more rearwardly inclined rest or recumbent position.
• the seat shell may also be displaced in the longitudinal direction of the chassis in which it is secured.
• the adjustment device has been designed in order to permit distinct adjustment positions which, for example, may be defined in that a locking pin extends through a corresponding aperture in a moving part.
• the present invention has for its object to design the child's vehicle safety chair intimated by way of introduction in such a manner that it obviates the drawbacks inherent in the prior art constructions.
• the present invention has for its object to realise a child's vehicle safety chair whose seat shell may be steplessly adjusted in the pivotal direction between an upright sitting position and a powerfully rearwardly inclining recumbent position.
• the present invention has for its object to realise a child's vehicle safety chair which, in connection with a collision, may permit a certain relative movement between the seat shell and the chassis in which it is secured, for the purpose of reducing the G-forces acting on a child placed in the safety chair.
• the present invention has for its object to realise a child's vehicle safety chair which is simple and economical in manufacture, and also convenient and reliable in use.
• the adjustment device includes an openable friction coupling which, in the open state, permits relative movement between the seat shell and the chassis and, in the locked state, realises a predetermined locking action between the seat shell and the chassis, such locking action being adapted to permit relative movements between the seat shell and the chassis under the action of G-forces acting on the occupant of the seat and the seat shell during a collision.
• Fig. 1 is a schematic side elevation of a child's vehicle safety chair according to the present invention.
• Fig. 2 is a schematic cross section taken along the section marking A-
• reference numeral 1 relates to a chassis for the child's vehicle safety chair, the chassis being intended to be secured in a vehicle seat.
• the chassis 1 has a bottom portion 2 which is intended to rest on the seating area of the vehicle seat, and also an upwardly directed support portion which is intended to support against the back support of the vehicle seat. The securement of the chassis 1 in the vehicle seat is put into effect using the standard safety belt of the vehicle seat.
• the child's vehicle safety chair further comprises a seat shell 4 which at least has a lower seating surface 5, a back support surface 6, and preferably also side support surfaces 7.
• the seat shell 4 is normally manufactured from a configurationally stable plastic material and has an inherent mechanical strength which is sufficient to dispense with the use of rigidifying tubular constructions, sheet reinforcements or the like. Interiorly in the seat shell, there is disposed suitable upholstery for improved comfort for a child sitting in the safety chair.
• the seat shell has anchorage points for the safety belts, safety harnesses and the like which are employed to ensure that the child is restrained in position in the child's vehicle safety chair.
• the child's vehicle safety chair has an adjustment device by the intermediary of which the seat shell 4 is connected to the chassis 1 in such a manner that the seat shell is pivotal about a pivot axis 8 which is horizontal and approximately transversely directed in relation to the direction of travel of the vehicle.
• the seat shell is adjustable between an upright sitting position which is shown in Fig. 1 by solid lines, and a rearwardly inclined rest or recumbent position which is shown by ghosted lines in Fig. 1.
• the pivot axis 8 is located at a height h s above the seating surface 5 of the seat shell, while the point of gravity 9 of the combination of seat shell 4 and child occupant in the upright sitting position of the seat shell is at a height h t above the seating surface 5.
• h s lies between 0.5 and 0.9 h t , but preferably approximately at 0.7 h t . The importance of this dimensioning will be illuminated below.
• the adjustment device which connects the seat shell 4 with the chassis 1, is designed to permit stepless adjustment of the seat shell about the pivot axis 8. Further, the adjustment device includes an openable friction coupling which, in the open state, permits pivoting of the seat shell between the upright sitting position and the recumbent position. In the locked state of the friction coupling, this realises a predetermined locking action between the seat shell and the chassis, the locking action (which is variable or adjustable) is adapted to permit a pivoting of the seat shell in relation to the chassis under the action of such G-forces as act against the child occupant and the seat shell during a collision.
• the seat shell 4 has an arcuate guide 10 on either side of the seat shell.
• the two guides 10 are rigidly secured in the seat shell and are, as a result, dependent upon its mechanical strength.
• the guides have radially outwardly facing surfaces (downwards in the Figure), which at least partly abut against support surfaces 11 on support portions 12 disposed in the chassis 1.
• the radially outer surfaces of the guides 10 are arcuate and rest against the correspondingly arcuate support surface 11.
• the outer surface of the guides 10 has a longitudinal slot through which extend one or more headed pins which have heads which are located interiorly in the guide. In their turn, the pins are secured in the support portion and thereby interconnect it with the guide so that the guide may be pivoted about the pivot axis 8, whereupon the radially outer surface of the guide slides against the support surface 11 of the support portion 12.
• the friction coupling between the guide 10 and the chassis 1, in particular its support portion 12, is further provided with friction means which are connected to the chassis or its support portion and, under spring pretensioning, disposed in friction engagement with the guide.
• the friction means comprise a draw bolt 13 with a head 14 (see Fig. 2), the head 14 being located interiorly in the guide 10 and abutting against the inside of its wall facing towards the support surface 11.
• a friction coating (not shown) may be disposed between the underside of the head 14 and the inside of the guide 10.
• the surface of the guide 10 facing towards the support portion 12 may also be provided with a friction coating, which may also apply to the support surface 11 in the region of the draw bolt 13.
• a washer of friction-promoting material between the head 14 of the draw bolt 13 and the inside of the guide.
• Alternative placings of the friction coating are on the support surface 11 in the region of the draw bolt 13 or on the side of the guide abutting against the support surface. Combinations of these alternatives are also possible.
• spring means 15 are provided on the underside of the support surface 11 in the form of a package of spring washers through which the draw bolt 13 extends. Furthermore, the draw bolt 13 has a nut by means of which the spring means 15 may be compressed more or less, such that the clamping force of the head 14 against the guide 10 may thereby be adjusted and set, and consequently also the friction force between the guide 10 and the support portion 12.
• the friction coupling will, in an inactivated position of rest, interconnect the guide 10 with the support portion 12 so that relatively large force is required to achieve a relative pivoting between the seat shell 4 and the chassis 1.
• the present invention further includes an operating device 17 by which the spring means 15 may be unloaded.
• the operating device - which is designed as a handle 17 - is pivotal about a pivot axis 18 and abuts a short distance from this pivot axis against the end of the draw bolt 13.
• the draw bolt 13 may be urged upwards against the action of the spring means 15, whereby the seat shell 4 will be freely adjustable about the pivot axis 8.
• the operating device 17 is designed in such a manner that one and the same handle may be employed for actuating the draw bolts 13 on both sides of the chair.
• the pivoting of the seat shell 4 in relation to the chassis 1 need not be achieved by the employment of the above- mentioned arcuate guide. It is also possible to employ a pivot device which connects the seat shell 4 with the chassis 1 and which has its pivot shaft located in the proximity of the picot axis 8. In such a construction, the seat shell may be pivoted about the above-mentioned pivot pins.
• a brake portion is connected to the seat shell 4, against which portion may be applied a friction device included in the friction coupling and connected to the chassis. Suitably, this friction device is also spring pretensioned to locked position.
• the guide 10 need not be designed as the above-described hole profile, but may be an arcuate plate profile which runs in and is guided by a number of rollers which are connected to the support portion 12.
• the plate profile may serve the purpose of the brake portion.
• a construction which is the reverse in relation to that mentioned above may also be conceivable in that side plates are connected to the seat shell 4, these having arcuate arched grooves in which rollers are accommodated, these being connected to the chassis 1 and in particular its support portion 12. Also in this alternative, the side plates may act as the brake portions.

Landscapes

• 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)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20404912

Family Applications (1)

Country Status (4)

Cited By (10)

Families Citing this family (2)

Citations (8)

• 1996
  • 1996-12-09 SE SE9604529A patent/SE9604529L/ not_active Application Discontinuation
• 1997
  • 1997-12-09 WO PCT/SE1997/002047 patent/WO1998025789A1/en not_active Application Discontinuation
  • 1997-12-09 EP EP97948093A patent/EP0941170A1/en not_active Withdrawn
• 1999
  • 1999-05-27 NO NO992570A patent/NO992570L/no unknown

Patent Citations (8)

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