| 摘要 |
<p>The invention concerns a collapsible folding device forming a megaphone, presented in planar shape I or in volume shape II, consisting of a sidewall (1) made from flexible material, shape II being obtained by folding the sidewall in order to define a hollow body open at the two ends thereof, at the base (2) and at the top (3) respectively, via a large and a small opening, and in which: - the sidewall has a substantially rectangular shape having two long edges (4) and two short edges (5) in which the long edges of the sidewall form the two openings at the base and at the top of the hollow body, - in volume shape II, the hollow body is formed by wrapping said sidewall around itself and has two sidewall thicknesses over (all of / at least two thirds of) the wall of same, - said volume shape II is held by a quick attachment device (6) designed to engage with and hold the two thicknesses of the assembled sidewall, - the two thicknesses of the sidewall, forming the wall of the hollow body of volume shape II, are free of perforations. - in volume shape II, said sidewall has a portion that is not wrapped around the hollow body, perpendicular thereto by means of a folding axis (7) in contact with the wall of the hollow body and at least two holes (8) positioned on an axis parallel to the central axis of the hollow body and having a diameter through which a finger can be inserted, - the sidewall has a concave cutout (9) in the middle of one of the long edges in the direction of the length designed to form the smaller opening. The invention also concerns a method for producing such a collapsible folding device forming a megaphone.</p> |
