[0001] The present invention relates to a metal section bar for door and window frames.
[0002] The use is known of metal section bars in alluminium alloy for the construction of
door and window frames of various types, especially outer windows.
[0003] Said section bars are accomplished in a tubular shape with a substantially rectangular
cross-section and include two essentially flat opposite sides, which extend parallel
to one another to form abutment elements suitable for defining with the sides themselves
frame's inner and outer face, and two sides perpendicular to them one of which is
provided with turned sections defining a substantially C-shaped cavity arranged at
the extremity of the above side which corresponds to the frame's inner face.
[0004] Such section bars can variably be coupled to accomplish a traditional joint, characterized
by the presence of sealing gaskets arranged between the opposite abutments, as well
as to accomplish a joint with a decompression pre-chamber (open joint).
[0005] According to the techniques in use both the traditional solution and that with an
open joint require the use of different section bars for the fixed parts and for the
moving parts.
[0006] The object of the present invention is that of overcoming the abovementioned drawback
by allowing the use of the same section bar both for the fixed part and for the moving
part of the door or window frame.
[0007] According to the invention such object is attained with a metal section bar for door
or window frames, having a tubular shape with a substantially rectangular cross-section
with two essentially flat opposite sides, which extend to form abutment elements suitable
for defining, with the sides themselves, the inner face and the outer face of the
frame, respectively, and two sides perpendicular to said opposite sides, a first perpendicular
side being provided with turned sections defining a first substantially C-shaped cavity,
arranged at the inner extremity of said first perpendicular side and suitable for
coupling to a joining element of a standard type hinge, characterized in that the
second perpendicular side is provided with similar turned sections defining a second
similar substantially C-shaped cavity, next to the corresponding inner extremity of
said second perpendicular side and suitable for coupling to a symmetrical joining
element of the above hinge.
[0008] It is thus obtained in this way that a single section bar may be used both for the
fixed part and for the moving part of the frame.
[0009] In fact, for the fixed part, the section bar is fastened to the jamb at the second
perpendicular side and the C-shaped cavity of the first perpendicular side receives
the hinge's fixed joining element, while for the moving part a identical section bar
receives the corresponding opposite part (glass in the case of a window) at the first
perpendicular side and the C-shaped cavity of the second perpendicular side receives
the hinge's moving joining element. The spacing of the latter C-shaped cavity from
the inner extremity of the corresponding side allows the definition between the inner
extremities of the two section bars of the space necessary for housing a sealing gasket,
as well as for the passing of the hinge's connecting parts.
[0010] With two equal section bars there is accomplished in particular a coupling of the
traditional type, that is, with sealing gaskets which are in turn of the traditional
type, acting by compression and housed in suitable seats of the abutment elements.
This does not prevent a single section bar according to the invention from being used
for the flxed part of the frame in combination with a different one of a known type
to accomplish a joint of the so-called open type.
[0011] In the traditional solution the stagger between said first and second cavities is
used for housing the abovementioned sealing gaskets, whereas in the open-joint solution
there is a substantial complanarity of the outer sides and a variable-seal gasket
is arranged in an internal space between the two section bars, coupled to a further
C-shaped cavity on the first perpendicular side of the fixed section bar.
[0012] 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 bar according to the invention;
Fig.s 2, 3 illustrate respective methods for the use of the metal section bar, with
the traditional sealing gasket solution and with the open-joint type, respectively.
[0013] With reference to Fig. 1, the metal section bar according to the invention is configured
in a tubular shape with a substantially rectangular cross-section with two essentially
flat opposite sides 1,2 which extend to form abutment elements 41, 42 suitable for
defining, with the sides themselves, the outer face and the inner face of the frame,
respectively. The abutment elements 41, 42 have pairs of opposite turned sections
3, 4 suitable for defining minor cavities 5, 6. The section bar also comprises two
sides 7, 8 parallel to one another and perpendicular to said sides 1, 2. Side 7 is
provided with turned sections 9 defining a first substantially C-shaped cavity 10,
arranged at the inner extremity of said side 7. Side 8 is provided with similar turned
sections 13 defining a similar second substantially C-shaped cavity 14, next to its
corresponding lower extremity. Side 7 has a further pair of turned sections 15 suitable
for defining a further cavity 16 located at a certain distance from the upper extremity
of side 7.
[0014] As illustrated in Fig. 2, if it is desired to accomplish a traditional coupling,
the same section bar is used both for the fixed part and for the moving part. For
the fixed part a section bar A such as that of Fig. 1 is fastened to the jamb 30 at
the second perpendicular side 8 using for such purpose a coupling element 11 which
has a part 12 located inside the C-shaped cavity 14 and a part 33 fastened in a way
known in itself to a counterframe 31 fastened to the frame's jamb 30. The C-shaped
cavity 10 of the first perpendicular side 7 of the same section bar receives a fixed
coupling element 18 of a hinge 19. According to such a solution, for the moving part
an identical section bar B is fastened to the glass opposite the first perpendicular
side 7 and the C-shaped cavity 14 of the first perpendicular side 8 receives a moving
coupling element 20 of hinge 19. The spacing of the latter C-shaped cavity 14 from
the inner extremity of the corresponding side 1 allows the definition between the
inner extremities of the two section bars of a space necessary for the passage of
the connecting parts of hinge 19 and for housing a sealing gasket 32 inserted in cavity
5 of section bar B and between the outer extremities of the same section bars of the
space necessary for housing a sealing gasket 17 which is inserted opposite the minor
cavity 6.
[0015] As illustrated in Fig. 3, if it is desired to accomplish an open-joint coupling,
a section bar A is used in combination with one of a known type C. There is accomplished
in this case a substantial complanarity of sides 2 of section bars A, C at the outer
face of the frame and a variable-seal gasket 26 is arranged in an internal space between
section bars A, C, coupled to a further C-shaped cavity 16 formed by the pair of turned
sections 15 on the first perpendicular side 7 of the fixed section bar A.
[0016] It should be noted that the shape and dimensions of cavities 10 and 14, as well as
in general of the entire section bar of Fig. 1, are chosen so as to be able to use
as moving and closing accessories, including the traditional system, components which
can be installed by contrast and designed according to the cavity known as a "European
chamber».
1. Metal section bar for door and window frames, having a tubular shape with a substantially
rectangular cross-section with two essentially flat opposite sides (1, 2), which extend
to form abutment elements (41, 42) suitable for defining, with the sides themselves,
the inner face and the outer face of the frame, respectively, and two sides (7, 8)
perpendicular to said opposite sides (1, 2), a first perpendicular side (7) being
provided with turned sections (9) defining a first substantially C-shaped cavity (10),
arranged at the inner extremity of said first perpendicular side (7) and suitable
for coupling to a joining element (18) of a standard type hinge (19), characterized
in that the second perpendicular side (8) is provided with similar turned sections
(13) defining a second similar substantially C-shaped cavity (14), next to the corresponding
inner extremity of said second perpendicular side (8) and suitable for coupling to
a symmetrical joining element (20) of the above hinge (19).
2. Metal section bar for door and window frames according to claim 1, characterized
in that said abutment elements (41, 42) are provided with turned sections (3, 4) suitable
for defining minor cavities (5, 6).
3. Metal section bar for door and window frames, according to claim 1, characterized
in that said first perpendicular side (7) has a further cavity (16) for a sealing
gasket (26).