Chairs and seats – Supplemental seat
Patent
1986-06-09
1987-11-17
McCall, James T.
Chairs and seats
Supplemental seat
297216, 297464, A47D 1500, B60R 2100
Patent
active
047070242
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a safety seat for the conveyance of babies and very small children.
So-called safety car seats for very small children are available on the market in conventional versions. As a rule, they have an upholstered seat shell, which can be swiveled and locked in a holder frame in a plurality of pivoted positions between an upright sitting position and a horizontal lying position. A swivel bearing is located in each of the two side portions of the seat shell, and a pushbutton-actuated locking catch is integrated with the swivel bearing. As a result, between the pivot point and the locking member only a very short lever arm is ever available for effecting the locking action.
The conventional safety seats, in order to be secured, have a U-shaped opening in both armrests. The lap portion of an automatic lap and shoulder safety belt, or a lap belt, can be drawn under fixed brackets located in both armrests. Guiding the belt in this way has the disadvantage that the safety seat can be fixed securely in only one direction, for instance in the direction opposite the direction of travel.
Since in order to adjust the inclination of the seat both locking catches must be released simultaneously by actuating a pushbutton, two hands must always be used to operate it. In addition, adjustments once the seat is in the installed position can be made only with difficulty, because either the foot or head end of the seat shell rests against the vehicle upholstery. Adjustment is made still more difficult by the fact that easy swiveling of the seat is hindered by the spatial distance, and hence by the effective lever arm, between the pivot point and the location of the belt guides.
BRIEF SUMMARY OF THE INVENTION
It is the object of the present invention to devise a safety seat for the conveyance of babies and very small children in vehicles, which is equipped with particular safety features for traveling and additionally is very easy to operate.
This object is attained by means of the novel characteristic of the invention wherein the safety seat includes a holder frame, a seat shell swivelably supported in the holder frame for rotation about a swivel axis, so as to define an area of overlap between a bottom of the shell and the holder frame, and so as to be lockable in various swiveled positions relative to the holder frame, and at least one belt guide for receiving an automatic lap and shoulder belt or lap belt, there being provided a locking catch located far distant from the swivel bearing so as to obtain a long lever arm on the part of the locking action in said overlap area, the locking catch including a manually operable locking member which is shiftable toward the holding frame and can be brought into engagement with the holding frame. Since the locking catch is disposed in a region of the outside of the seat shell located far distant from the swivel bearing, between the holder frame and seat shell in the area of overlap between them, the lever arm between the pivot bearing and the locking catch is very long, in contrast to conventional seats. The forces prevailing at the locking catch in the event of a possible collision are accordingly less, and breakage of the locking member and an attendant centrifugal motion of the seat, in which strong forces of acceleration act upon the baby, are thereby avoided. Thus a single locking catch is entirely sufficient, and this makes it possible to adjust the inclination using only one hand.
According to another novel characteristic of the invention, wherein the seat shell is approximately V-shaped in longitudinal cross-section and has V-like legs substantially at right angles to one another to form a backrest and legrest, and the locking catch is disposed substantially centrally outside of the shell bottom encompassing the area of the seat of an occupant of the safety seat, in a rounded transistional zone between the backrest and the legrest, the locking catch is disposed virtually at the vertex between the V-like shanks of the backres
REFERENCES:
patent: 2367829 (1945-01-01), Shinn
patent: 3290050 (1966-12-01), Ezquerra
patent: 4033622 (1977-07-01), Boudreau
patent: 4205877 (1980-06-01), Ettridge
patent: 4231612 (1980-11-01), Meeker
patent: 4500133 (1985-02-01), Nakao
Frankonia Kinderausstattungen GmbH & Co. KG
McCall James T.
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