Motor vehicles – Special wheel base – Collapsible or knockdown for storage or transport
Patent
1990-02-09
1991-08-27
Bertsch, Richard A.
Motor vehicles
Special wheel base
Collapsible or knockdown for storage or transport
180 648, 180907, 280DIG5, 297DIG4, B62D 2706, B62D 112
Patent
active
050426079
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a power driven vehicle for the disabled, particularly for children, and which incorporates a motor driven chassis module, a seat module and an accumulator module.
BACKGROUND OF THE INVENTION
Vehicles for disabled children have hitherto at best consisted of diminished size, conventional wheel chairs for adults. These wheel chairs are not adaptable or not readily adaptable to the development of the child, i.e. its physical development as well as the development of its possible handicap, during the childhood; and the wheel chairs therefore neither take into consideration the child's requirement for play, nor do they meet the demands from the nursing staff for ease of handling and low weight.
Wheel chairs for disabled, which are designed in modules are known, e.g. from SE-C-331 884, and they consist of a chassis, incorporating a motor, wheels and battery box, which parts form a continuous unit of large weight. A seat module can be attached to the chassis, which seat module can be common for several different types of chassis, for providing e.g. an indoor wheel chair, a stationary or a semi-stationary chair. Conventional, electrically powered wheel chairs are very heavy and expensive.
PURPOSE AND MOST ESSENTIAL FEATURES OF THE INVENTION
The purpose of the present invention is to provide a wheel chair, which consists of several different parts--modules--, each one being exchangeable for bigger ones so that the wheel chair may "grow" together with the child. The wheel chair with some simple manipulations also be dismantled into easily manageable parts, which make it possible to use the wheel chair indoors as well as outdoors. Due to an exchange system it shall be possible to exchange different modules for bigger modules or for modules particularly adapted concurrently with the development of the child's handicap.
The module system will facilitate service, when it will be possible to replace a defective module, e.g. by the child's parents, without substantial difficulties , so that the wheel chair never must be out of use for any substantial period of time. A further purpose of the invention is to provide a wheel chair, wherein the child can have both floor contact, i.e. participate in activities at floor level, as well as be sitting at a table, whereby the child himself or herself shall be able to adjust not only the height position of the vehicle but also the maneuvering of the entire vehicle. These tasks have been solved in that the chassis module incorporates two wheel pair units, which are disconnectable from each other, a first wheel unit, preferably being a front wheel unit and a second wheel unit, preferably being a rear wheel unit. One of the wheel pair units, preferably the first wheel unit incorporates two steering and driving units acting individually upon one wheel each. The second wheel unit comprises a central beam, one end of which is connectable to the first wheel unit. Its other end a yoke is pivotably supported transversely to the longitudinal direction of the vehicle. Its free ends have wheels supported in bearings. The seat module is centrally arranged on the beam. The accumulator module is attached on both sides of the beam, between the pairs of wheel.
DESCRIPTION OF THE DRAWINGS
The invention hereinafter will be further described with reference to the accompanying drawings, which show some exemplary embodiments.
FIG. 1 shows in perspective a wheel chair according to the invention as seen obliquely from the front side thereof.
FIG.2 shows in perspective an exploded view of the different modules of which the wheel chair according to FIG. 1 consists.
FIGS. 3 and 4 show views analogous with FIG. 2 of two modified embodiments.
FIGS. 5 and 6 show in views from underneath and from the side a further modified embodiment of the wheel chair according to the invention.
DESCRIPTION OF THE EMBODIMENTS
The wheel chair according to the invention consists of a chassis module 11, a seat module 12 and an accumulator module 13. The chassis module 11 incorporates two
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Falkenson Richard
Linderoth Goran
Bertsch Richard A.
INM Industriteknik AB
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