FIELD: breathing masks or helmets.
SUBSTANCE: present invention relates to gas mask equipment, to parts of gas masks, full-face masks and half-masks. Double rubber corrugated tube for connection of the front part of the filtering means of individual respiratory protection, equipped with two internal fasteners with latches, with filters having external thread, contains two rubber corrugated hoses, wherein to the upper connecting part of each corrugated hose is connected an adapter with an external attachment, intended for connection with a corresponding internal attachment with a latch of the front part of the filtering means of individual respiratory protection, and with two lower connecting parts of said rubber corrugated hoses a Y-shaped adapter is connected, intended for connection with a filter having an external thread, wherein the adapter with external attachment is made in the form of a one-piece part consisting of a base, which is a hollow elliptical cylinder, the upper part of the base of which is connected to the external attachment of the adapter, and the lower part of the base is an ellipse, the length of the major axis of ellipse is 32.5 mm, the length of the minor axis of ellipse is 15.5 mm, the thickness of the walls of the side surface of the hollow elliptical cylinder is 3 mm, and an external attachment, which comprises an attachment platform made in the form of an isosceles trapezoid, the length of the upper base of trapezoid is 52 mm, the length of the lower base of trapezoid is 60.5 mm, U-shaped external attachment, which is located at angle of 90 degrees relative to the upper base of the trapezoid of the attachment platform, has height of 16 mm, width of 37 mm, thickness of 2 mm, wherein inside the U-shaped external attachment there is a hole for fixation of the internal attachment of the front part of the filtering means of individual respiratory protection, and a connecting part for connection to the front part of the filtering means of individual respiratory protection, made in the form of a hollow elliptical cylinder, in which the length of the major axis of ellipse is 47 mm, the length of the minor axis of ellipse is 9 mm, wall thickness of the side surface of the hollow elliptical cylinder is 2 mm, and located at angle of 90 degrees to the lower base of the trapezoid of the attachment platform, and the Y-shaped adapter consists of a gasket having an annular solid shape of a rectangular vertical section, an inner diameter of 27 mm, an outer diameter of 40 mm, thickness of 2 mm, and an adapter body having a Y-shape and which is a one-piece part comprising an upper connecting part in the form of two hollow cylinders arranged at angle of 90 degrees to each other and made with bulges in the form of rings, intended for connection with lower connecting parts of two rubber corrugated hoses, and a lower connecting part in the form of a nut with a round internal thread with a nominal thread diameter of 40 mm, a thread pitch of 4 mm, a rounding radius of 1.25 mm, a smallest inner diameter of 38.41 mm, a maximum inner diameter of 38.06 mm, smallest outer diameter – 40.06 mm, on the outer side of which there are finger stops, and on the inner side of the nut on the pad for the gasket, a gasket is installed, and is intended for connection with the external threaded attachment of the filter having an external thread corresponding to the internal thread of the said lower connecting part.
EFFECT: providing a safe and tight connection between the front part of the RPE, having internal fasteners of 3M™ Secure click™ standard and their counterparts with threaded attachment of filter, having external thread with diameter of 40 mm and thread parameters corresponding to requirements of GOST 8762-75.
1 cl, 11 dwg
