FR2680246A1 - Pneumatic device for tests of extraction of free pieces from toys to be held in the mouth - Google Patents

Abstract

The invention relates to a device making it possible to suck and expel, at adjustable pressure, the air passing through the orifices of the toys in order to extract the free or detachable internal parts. It consists of a casing (1) containing an electric turbine (2), the speed of which is altered by a potentiometer (4). A pressurisation (6) and depressurisation (7) chamber make it possible to create suction or overpressure in the toy fixed to an orifice (3) by means of two accessories (Fig. 4 and Fig. 5) which can be interchanged, making it possible to adopt the various shapes of the mouthpieces. The device according to the invention is in particular intended for checking the safety of toys to be held in the mouth.

Description

DESCRIPTION
The present invention relates to a suction / expiration simulation device on which adapt the toys to be worn in the mouth in order to extract the free parts capable of penetrating into the oral cavity of children.

 The device makes it possible to verify a regulatory safety requirement applicable to this category of toys in accordance with the provisions described in paragraph 3.2,2,3. of the mandatory application standard N.F. E.N.

 71.1. from April 1989 - classification index S 51 212 "toy safety" - part 1 - mechanical and physical properties.

 Given the low pressure drop of these toys and the very variable shapes of their orifices, it is difficult to expel and then suck the air circulating in their internal parts at the pressure set by the standard (10 kPa).

 The device according to the invention overcomes these drawbacks through the use of an electric turbine arranged in a compact housing, provided with an orifice whose dimensions are variable.

 The turbine speed is modulated by a potentiometer. A pressure gauge indicates the pressure prevailing in the pressure and vacuum chambers located on either side of the turbine, respectively.

 A lever is integral with a movable cylinder perforated in the upper and lower parts (diametrically opposite perforations). By positioning this lever on the left or the right, the pressure or vacuum chamber is brought into contact with the outlet orifice, respectively.

 The outlet is a cylinder in which is placed a mesh plate retaining the free parts of the toys possibly released during the test.

 - Two accessories on this cylinder are fitted with lugs, making it possible to seal the tips of various shapes of the toys to be tested.

 The first used to hold the end caps whose diameter does not exceed 5 centimeters consists of a cylinder closed either by a perforated rubber disc or by a plastic foam disc. These interchangeable devices are held at the outlet of the cylinder by a screwed cover pierced in the center.

 The second is more particularly used to hold large tips. It consists of a partially perforated tee cylinder. On either side and on the periphery of this matrix, three cylinders can be moved by translation and rotation. An orifice of rectangular section and of modular dimensions is thus generated.

 Figure 1 shows in section, in the pressure position, the device according to the invention.

 Figure 2 shows in section, in the vacuum position, the device according to the invention.

 Figure 3 is a photographic reproduction of the device.

 Figure 4 is a photographic reproduction of the first accessory for holding the tips.

 FIG. 5 is a photographic reproduction of the second accessory for holding the tips.

 With reference to these drawings, the device comprises a housing (1), a turbine (2), an orifice (3) on which adapt the accessories for holding the tips (FIG. 4 and FIG. 5), a potentiometer ( 4), a pressure gauge (5), a pressure (6) / vacuum chamber (7) and a lever (8) secured to a movable cylinder (9).

 By way of nonlimiting example, the turbine will have a power of 1000 watts making it possible to achieve a vacuum of 20 kPa and the device housing will have a space requirement of the order of 17 cm x 27 cm x 35 cm.

 The device according to the invention is particularly intended for controlling in the laboratory or in the manufacture of the safety of toys to be worn by the mouth.

Claims (7)

REVENI) ICATIONS  1) Device for aspirating and expiring at modular pressure the air passing through the orifices of the toys to be carried by mouth in order to extract the free or detachable internal parts therefrom; device characterized in that it comprises a box (1) provided with an orifice (3) on which two accessories (fig. 4 and fig. 5) can be adapted indifferently making it possible to maintain ensuring good sealing of the end caps very diverse.  2) Device according to claim 1 characterized by pressurization or vacuum using an electric turbine (2) whose speed is adjustable.  3) Device according to claim 1 characterized by the existence of a pressure chamber (6) and a vacuum chamber (7) communicating alternately with the outlet orifice by displacement of a lever (8) integral with a mobile perforated cylinder (9).  4) Device according to claim 2 characterized in that the pressure or vacuum applied in the various tips to be tested is indicated on a pressure gauge (5).  5) Device according to claim 2 characterized in that the speed of the turbine ((2) is adjustable by means of a potentiometer (4).  6) Device according to claim I characterized in that the attachment of small ends to be tested is effected by the use of rubber disks or perforated plastic foam adaptable on a screwed cover pierced in the center (fig.4).  7) Device according to claim 1 characterized in that the fixing of the large ends to be tested is carried out using an accessory in the form of a partially perforated tee on which one can generate an orifice of rectangular section and of dimensions which can be adjusted by translation and rotation of three mobile cylinders (fig. 5).