METAL SECTION WITH AN OCTAGONAL CROSS-SECTION FOR WINDOW OR DOOR FRAMES

Abstract: The section has a tubular shape with a substantially polygonal cross-section, provided with two larger faces (1, 2) opposite to one another and two smaller faces (3, 4) forming a connection with said larger faces, which extend in abutment elements (5, 6) suitable for defining with said larger faces the inner front and the outer front, respectively, of the window or door frame. The two larger faces (1, 2) comprise respective central portions (11, 12) parallel to one another provided with flaps (13, 14) defining C-shaped cavities (15, 16) for housing and connecting various members of the window or door frame. Each larger face also comprises lateral portions (17, 19; 18, 20) converging towards the corresponding lateral portions of the other larger face until they connect with the smaller faces. The section includes a hole (21) for drainage purposes.

Description: "Metal section with an octagonal cross-section for window or door frames". * * * * * The present invention relates to a metal section with an octagonal cross-section for window or door frames. The use is known of aluminium alloy metal sections for the construction of window or door frames of various kinds, in particular for external windows. It is also known that the same section may be used for the fixed parts and for the movable parts of the window or door frame. As shown in the utility model application No. 21900 B/89 filed on 10 October 1989 in the name of the same applicant, such a section has a tubular shape with a substantially rectangular cross-section with two essentially flat larger sides provided with respective pairs of outer flaps suitable for defining respective C-shaped cavities for connecting parts of a hinge to other members to be associated with the section, and two smaller sides perpendicular to the previous ones, which extend in abutment elements suitable for defining, with the smaller sides themselves, the inner front and the outer front, respectively, of the window or door frame. Again according to the known art with two equal sections it is possible to accomplish a connection of the traditional type, that is with seals in turn of the traditional type, acting by compression and housed in appropriate seats of the abutment elements. The possibility is also provided for connecting one of these sections to a section of a slightly different type for accomplishing a connection of the open-joint type, that is with the seal floating inside the window or door frame. In the traditional solution the stagger between the two abutment elements is used to house the seals, while in the open-joint solution there is a substantial coplanarity of the outer sides and a variable seal is arranged in an internal space between the two sections. In both cases there can be an input of water which stagnates inside the window or door frame without it being possible to cause it to flow away. The object of the present invention is to overcome such a drawback with a metal section shaped so that any water that has infiltrated between the fixed part and the movable part of the frame can be eliminated immediately. According to the invention such object is attained with a metal section for window or door frames, having a tubular shape with a substantially polygonal cross-section, provided with two larger faces opposite to one another and two smaller faces forming a connection with said larger faces, which extend in abutment elements suitable for defining with said smaller faces the inner front and the outer front, respectively, of the window or door frame, said larger faces comprising respective central portions parallel to one another provided with flaps defining C-shaped cavities for housing and connecting various members of the window or door frame, characterized in that each of said larger faces also comprises lateral portions converging towards the corresponding lateral portions of the other larger face until they connect with said smaller faces. At the intersection between said smaller face defining the outer front of the window or door frame and said first larger face there is at least one hole suitable for allowing any water that may have infiltrated to flow away. In such way the presence of the inclined Lateral portions allows the formation of a kind of small lateral reservoir in which any water that may have infiltrated is invited to collect and then to flow away through the above hole. Water will thus be prevented from stagnating inside the window or door frame. The features of the present invention shall be made more evident by the following detailed description of an embodiment illustrated as a non-limiting example in the enclosed drawings, wherein: Fig. 1 illustrates a metal section according to the invention; Fig.s 2, 3 illustrate respective methods of utilization of the metal section according to the invention, with the traditional solution with a seal and with the open-joint type, respectively. With reference to Fig. 1, the metal section according to the invention is configured with a tubular shape having a substantially polygonal cross-section with a first and a second larger face 1, 2 opposite to one another and two smaller faces 3, 4 forming a connection between the two larger faces 1, 2, which extend in abutment elements 5, 6 suitable for defining with the same smaller faces 3, 4 the inner front and the outer front of the window or door frame. The abutment elements 5, 6 have respective pairs of opposite flaps 7, 8 suitable for defining smaller cavities 9, 10. The first and second larger faces 1, 2 comprise central portions 11, 12 parallel to one another provided with flaps 13, 14 defining C-shaped cavities 15, 16 for the purposes which shall be explained later. The first larger face 1 also comprises Lateral portions 17, 19 converging towards corresponding lateral portions 18, 20 of the second Larger face 2. On the abutment element 5, at the intersection with the Larger face 1, there are holes 21 for the purposes which shall be explained Later. As illustrated in Fig. 2, according to the traditional connection two sections A and B identical with that of Fig. 1 are used for the fixed part and for the movable part of the window or door frame. For the fixed part a section A is fastened in a way known in itself to the jamb, not shown, and to the fixed part 22 of a hinge 25. According to such a solution an identical section B holding a pane of glass 24 with the help of an element 40 holding the pane of glass receives in the C-shaped cavity 16 of the Larger face 12 a connecting element 28 for the movabLe part 41 of the hinge 25. Between the abutment elements 6 of the two sections A and B there is defined a space suitable for the passage of the fixed and movable parts 22 and 23 of the hinge 25 and for the housing of a seal 26 inserted in the cavity 10 of the section B, while between the abutment elements 5 of the same sections there is defined the space necessary for the housing a seal 27 inserted in the cavity 9 of the section A. Due to the effect of the convergence of the Lateral portions 17 and 18 of the section A, any water that may have infiltrated through the seal 27 is collected in a small reservoir 50 formed by the inclination of the above portion 17 so that it may later be made to flow through the hole 21 of the same section A. As illustrated in Fig. 3, an open-joint connection implies the use of a section A in combination with a slightly different section. There occurs in this case a coplanarity of the abutment elements 5 of the sections A and C at the outer front of the window or door frame and a variable seal 29 is arranged in an internal space between the two sections A, C, defined by a tang 41 of the section C and a nearby flap 13 of the section A. Any water that may have penetrated through the passage between the extension 5 of the smaller side 3 of the section A and that of the section C is collected in a small reservoir 52 created by the seal 29 to be then discharged through the hole 21 in a manner altogether similar to that illustrated previously.

Claims: C L A I M S 1. Metal section for window or door frames, having a tubular shape with a substantially polygonal cross-section, provided with two larger faces (1, 2) opposite to one another and two smaller faces (3, 4) forming a connection with said Larger faces, which extend in abutment elements (5, 6) suitable for defining with said smaller faces (3, 4) the inner front and the outer front, respectively, of the window or door frame, said larger faces (1, 2) comprising respective central portions (11, 12) parallel to one another provided with flaps (13, 14) defining C-shaped cavities (15, 16) for housing and connecting various members of the window or door frame, characterized in •that each of said larger faces (1, 2) also comprises lateral portions (17, 19; 18, 20) converging towards the corresponding lateral portions of the other larger face until they connect with said smaller faces (3, 4). 2. Section according to claim 1, characterized in that at the intersection between one abutment element (5) defining the outer front of the window or door frame and the nearest (1) of said larger faces (1) there is at least one hole (21) suitable for allowing the infiltrated water to flow away.

Inventors: ZANONI EDOARDO, ZANONI, EDOARDO
Applicants: ORNAGO HYDRO ALLUMINIO, HYDRO ALLUMINIO ORNAGO S.P.A.
Application year: 1991
Main classification: E06B7
IPC codes: E06B3, E06B7