FR2850260A1 - Inflatable cushion for armchair comprises central compressible foam core welded into upper and lower casings and flexible wrinkled membrane articulated about hinge obtained by high frequency welding of membrane on upper casing - Google Patents

Abstract

The inflatable cushion is constituted from a central compressible foam core (1) in the shape of an egg. It has a lower casing (2) and an upper casing (3) on which the foam core is welded. A flexible wrinkled membrane (4) is articulated around a hinge (5) obtained by the high frequency welding of the membrane on the upper casing. There is a welded valve and two fastening rings. Assembly of the cushion is obtained by a peripheral high frequency weld of the upper casing on the lower casing.

Description

Cushion or inflatable chair extension

DESCRIPTION

  The present invention relates to improvements in inflatable airbags and seat extensions.

  Currently there are seat cushions comprising an inner core of compressible foam and an outer shell which can be more or less inflated to achieve the desired comfort, for example in the patent WO 92/04846.

  Experience shows that if the airbag can bring a certain comfort, it does not solve the problem posed by the maintenance of a child on a hairdresser's seat, either because the cushion slips off the seat, or because the child slips and falls from the seat.

  The principle of the invention which overcomes these disadvantages is solved by a hinged diaphragm with a hinge welded to the front of the seat on the airbag whose folded accordion shape, once deployed at the crotch of the seat. child holding on the seat or raising the seat.

  The inflatable seat cushion or enhancer is composed of: - a central core of compressible foam of ergonomic round shape, like the shape of an egg, - a lower envelope on which is welded the foam core, - d ' an upper envelope on which is welded the foam core, having on the front of the seat a flexible diaphragm 25 folded accordion articulated around a hinge obtained by welding HF (High Frequency) of the membrane on the upper envelope, - a welded check valve, - and two fastening rings.

  A peripheral RF weld from the upper envelope to the lower envelope assembles the assembly and the airbag.

  Advantageously the ergonomic shape of the kind of the shape of an egg, the surface of the central foam core correctly positions the child or the elderly person on the seat.

  Preferably the flexible membrane has an ergonomic shape once deployed at the crotch of the child to ensure the maintenance in a good position on the cushion, which retracts when the cushion is not inflated.

  According to another feature the flexible membrane once deployed at the crotch level of the child is flexible enough to retract when the child is taller or an adult sits on the cushion.

  According to another feature, the flexible membrane once deployed has an aesthetic shape like profile of objects or animals or other profiles.

  Preferably the flexible membrane can be deployed according to several techniques: accordion, bellows, wallet and with a membrane capable of expanding.

  In a preferred embodiment at least two rings attached to the back of the cushion allow a strap to connect it to the back of the chair, chair or car seat.

  According to another preferred embodiment a valve valve (6) welded to the upper envelope can inflate the cushion to the appropriate height depending on the size of the child or the elderly.

  The present invention responds well to the objectives set.

  Other features and advantages will become apparent from the following description of an embodiment of the present invention given by way of nonlimiting illustrative example and with reference to the appended drawings, in which: FIG. 1 is a view from above of the airbag,> Figure 2 is a sectional sectional view showing the inflated cushion.

  This invention consists in providing a cushion comprising a core (1) of compressible foam of ergonomic rounded shape of the type of an egg and of sufficient thickness to ensure a suitable flexibility (firm comfort).

  A lower casing (2) made of a preferential solution made of PVC-coated fabric or PVC fabric with a thickness of about 35/100 mm and a chosen color on which the foam core is welded. An upper casing (3) made of the same material on which the foam core is welded.

  This upper envelope comprises a flexible membrane (4) made of a similar material, folded accordion and articulated around a hinge (5) located at the front of the seat and obtained by the welding HF (High Frequency) of the flexible membrane on the upper envelope.

  A flapper valve (6) welded to the upper casing inflates the cushion to the proper height depending on the size of the child or senior.

  A peripheral weld (8) of the upper envelope on the lower envelope allows the cushion to be made.

  Two attachment rings (7) are fixed in the two corners at the rear of the cushion to receive a flexible strap depending on the type of seat: chair, chair Thus, when inflating the cushion with the aid of a manual pump, the cushion rounds and the flexible membrane unfolds so that the child who sits on the cushion is well positioned on the seat and can not slip from the cushion, and chair when a strap connects the cushion to the back of the chair or chair.

  This example of application of airbags for hairdressing chairs is not limiting. On the one hand, they can be used for home hairdressing as well as in schools, nurseries, school canteens, 20 on car seats, etc. and on the other hand for adults with one or more different sizes in special cases and in various fields: retirement home, hospitals and clinics, etc.

  The modifications that may be made by those skilled in the art to the present invention described above which without altering the original arrangements would be merely technical equivalents are within the scope of the present invention.

Claims (8)

  1) Cushion or inflatable chair extension comprising a central core (1) compressible foam of ergonomically rounded shape, of the form of an egg, a lower casing (2) on which is welded the foam core, a upper casing (3) on which is welded the foam core, characterized in that it comprises a flexible membrane (4) folded accordion articulated around a hinge (5) obtained by the welding HF (High Frequency) of the membrane on the upper envelope, a welded check valve (6) and two fastening rings (7), with a peripheral HF weld (8) of the upper envelope on the lower envelope which carries out the assembly and the airbag.   2) Inflatable cushion according to claim 1 characterized in that the ergonomic shape of the kind of the egg shape of the surface of the central core 15 foam properly positions the child or the elderly person on the seat.   3) Inflatable cushion according to claim 1 characterized in that the flexible membrane has an ergonomic shape once deployed at the crotch of the child to ensure the maintenance in a good position 20 on the cushion and which retracts when the cushion is not inflated.   4) Inflatable cushion according to claim 1 characterized in that the flexible membrane once deployed is flexible enough to retract when the child is taller or an adult sits on the cushion.   5) Inflatable cushion according to claim 1 characterized in that the flexible membrane once deployed has an aesthetic shape like profile of objects or animals or other profiles.   6) Inflatable cushion according to claim 1 characterized in that the flexible membrane can be deployed according to several techniques: accordion, bellows, wallet and with a membrane capable of expanding.   7) Inflatable cushion according to claim 1 characterized in that at least two rings attached to the rear of the cushion allow a strap to connect to the back of a chair or chair.   8) Inflatable cushion according to claim 1 characterized in that a valve valve (6) welded to the upper envelope to inflate the cushion to the appropriate height depending on the size of the child or the elderly.