FIXING SQUARE FOR FRAMES COMPRISING PROFILES INSERTED IN THE SQUARE CHANNEL

Abstract

 A frame (100) comprises: a first profile (P1) with a "T"-shaped longitudinal groove (S1) comprising a longitudinal opening (1 a), a second profile (P2) with a first "T"-shaped longitudinal groove (S2) comprising a longitudinal opening (2a); a fixing square (3; 300) comprising a first wing (31) and a second wing (32) that are inclined and respectively disposed inside the "T"-shaped groove (S1) of the first profile (P1) and inside the first "T"-shaped groove (S2) of the second profile (P2); at least a wing (31,32) of the fixing square (3; 300) having a lower width (L31, L32) than the width (L1 a, L2a) of the longitudinal opening (1 a,2a) of the "T"-shaped groove (S1,S2) wherein it is inserted; said at least one wing (31,32) of the fixing square (3; 300) comprising an eccentric locking means (M) configured in such manner to permit the increase of the total width of the wing (31, 32).

Description

[0001] The present patent application for industrial invention relates to a fixing square for frame comprising profiles inserted in the square channel.

[0002] The invention relates to the sector of fixing means for door and window frames, i.e. for architectural elements realized to close the openings obtained in masonry walls.

[0003] The fixing square that is the object of the present invention is used to connect two profiles of a frame disposed in such manner to form a "T", to which two glass-stops are fitted; said fixing square comprises two plates in orthogonal position, each plate being intended to be inserted inside a profile.

[0004] The peculiarities and advantages of the present invention will be more evident after a short description of the prior art.

[0005] As it is known, "T"-shaped frames for door and window are composed of two profiles, each profile comprising an external lateral surface and a "T"-longitudinal groove provided on said external lateral surface; said "T"-shaped groove comprises a rectangular base housing and a reduced longitudinal opening.

[0006] It must be noted that said groove is axially accessible through two axial openings, each of them being disposed in proximal position to the free end section of the profile.

[0007] Said end section of the profile is intended to be stopped against the external lateral surface of the other profile, in correspondence of the "T"-shaped groove of the latter profile in such manner that said two grooves are aligned.

[0008] Moreover, the "T"-shaped frame comprises a fixing square, which comprises a first wing and a second wing, which are perpendicular and have the same width and height as the base housing of the "T"-shaped groove of the profiles.

[0009] The dimensions of each wing are such to position the wing inside the base housing of the "T"-shaped groove of the corresponding profile, being axially inserted inside said base housing and crossing one of the two axial openings of the "T"-shaped groove.

[0010] The mounting of a "T"-shaped frame provides for axially inserting a wing of the fixing square in the "T"-shaped groove, making said fixing square slide until it reaches the desired position; successively, the other wing of the fixing screw is inserted in the axial opening of the "T"-shaped groove provided on the other profile.

[0011] The insertion of the fixing square must occur before the profiles are in the final position, because when the first profile is positioned perpendicularly to the second profile, with its free end section stopped against the lateral surface of the second profile, the latter indirectly covers the axial opening of the first profile.

[0012] Moreover, it is impossible to remove the fixing squares after inserting them inside the profiles wihtout dismounting the profiles.

[0013] In some cases the "T"-shaped grooves of said profiles are intended to act as fixing housings for devices, commonly known as glass-stop, each of them being intended to be fitted to a "T"-shaped groove of a profile in order to obtain a stop edge for a glass positioned in the window or door frame.

[0014] More precisely, said glass-stop device (hereinafter simply defined as "glass-stop") comprises elastic tabs that are fitted on the edges of the opening of the "T"-shaped groove of a profile and extend inside the "T"-shaped groove.

[0015] If two glass-stops are fitted to two corresponding consecutive perpendicular profiles, the glass-stop fitted to the first profile and the glass-stop fitted to the second profile need to be stopped one against the other in such manner to be positioned orthogonally and uninterruptedly one after the other; more precisely, in case of a quadrangular glass, said glass is supported by a perimeter frame composed of four profiles that are mounted perpendicularly and consecutively, with the four edges of the glass stopped against said four profiles; in such a case the glass is kept in the chosen position by means of a frame composed of four consecutive perpendicular glass-stops, each of them being fixed on the side of the corresponding profile facing towards the glass.

[0016] A fixing square between two consecutive profiles, which is inserted into the two consecutive grooves of said two consecutive profiles, occupies the entire width of the "T"-shaped groove of the profile; therefore, the two consecutive glass-stops fitted to the two consecutive grooves of said profiles cannot be fitted to the edges of the opening of the groove of the profiles in correspondence of the fixing square and therefore said glass-stops cannot be positioned in consecutive adjacent position.

[0017] DE202013009756 discloses a fixing square intended to connect two profiles of a frame and comprising two wings, each wing being provided with an eccentric locking means configured in such manner to let the total width of the wing increase.

[0018] US3375029 discloses a frame comprising two profiles and one fixing square disposed between said two profiles.

[0019] The main purpose of the present invention is to overcome the aforementioned drawbacks of the prior art by disclosing a fixing square that simplifies the mounting, dismounting and blocking operations.

[0020] Another purpose is to disclose a fixing square that, in addition to satisfying the aforementioned purpose, allows for fitting two glass-stops to two profiles connected by said fixing square and positioning said glass-stops in consecutive adjacent position in such manner that they are stopped and positioned uninterruptedly, one after the other, in correspondence of the fixing square.

[0021] The main purpose is achieved according to the invention with the characteristics claimed in the independent claim 1.

[0022] The additional purpose of the present invention is achieved according to the invention with the characteristics claimed in the dependent claims.

[0023] The frame of the invention comprises:

• a first profile having a longitudinal axis, at least one external lateral surface and a "T"-shaped longitudinal groove provided on said at least one external lateral surface; said "T"-shaped groove being provided with a base housing with a width and a longitudinal opening with a width;
• a second profile provided with a longitudinal axis, at least one external lateral surface and a first "T"-shaped longitudinal groove provided on said at least one external lateral surface; said first "T"-shaped groove being provided with a base housing having a length and a longitudinal opening with width; said second profile being provided with an end section, whereon said first "T"-shaped groove ends; said end section being stopped against the external lateral surface of said first profile in correspondence of the "T"-shaped groove of the first profile; said first "T"-shaped groove of the second profile and said "T"-shaped groove of said first profile being aligned;
• a fixing square between said two profiles; said fixing square comprising a first wing and a second wing that are mutually inclined; said first wing being disposed inside said base housing of the "T"-shaped groove of said first profile; said second wing being disposed inside said base housing of the first "T"-shaped groove of said second profile (P2); each wing being provided with an internal side faced towards the profile and an external side in opposite position to the internal side.

[0024] The peculiarity of the frame consists in the fact that at least one wing of the fixing square has a lower width than the longitudinal opening of the "T"-shaped groove wherein it is inserted. Said at least one wing of the fixing square comprises an eccentric locking means configured in such manner to let the total length of the wing increase until a width at least equal to the width of the base housing wherein the wing is inserted.

[0025] The advantage obtained by reducing the width of the wings of the fixing square and by inserting the eccentric locking means is the simplification of the mounting operations of the profiles and of the fixing square, inserting said wings into the longitudinal openings of the "T"-shaped grooves of the profiles, and then actuating the fixing means that, by increasing the total width of the wing, prevents the wing from moving inside the base housing of the groove or from coming out backwards through the axial opening.

[0026] For the sake of clarity, the description of the frame and of the fixing square according to the invention continues with reference to the attached drawings, which have a merely illustrative, not limiting value, wherein:

Fig. 1 is a perspective view of the frame of the invention;

Fig. 2 is an axonometric view of a first embodiment of the fixing square according to the invention;

Fig. 3 is a bottom view of the fixing square of Fig. 2;

Fig. 4 is a top view of the fixing square of Fig. 2;

Fig. 5 is a side view of the fixing square of Fig. 2;

Fig. 6 is a longitudinal view of the fixing square of Fig. 3 wherein a screw is positioned at the inlet of a hole;

Fig. 7 is the same as Fig. 6, except for the fact that the screw is completely inserted inside said hole.

Fig. 8 is an axonometric view of a second embodiment of the fixing square according to the invention;

Fig. 9 shows the wing of the fixing square of Fig. 8 which comprises eccentric locking means; said wing being seen from the internal side, that is to say from the side facing towards the profile where the wing is intended to be fixed;

Fig. 10 is a top view of the fixing square of Fig. 8;

Fig. 11 is a longitudinal view of the fixing square of Fig. 8 wherein two screws are positioned at the entrance of two housings;

Fig. 12 is the same as Fig. 11, except for the fact that the screws are completely inserted inside said housings.

Figs. 13-18 are axonometric views of the frame according to the invention, which show the mounting steps of the second embodiment of the fixing square according to the invention and of two glass-stops in the same frame.

Fig. 19 is a top view of the frame of Fig. 17 sectioned along the plane XIX-XIX;

Fig. 20 is an exploded view of the parts shown in Fig. 19.

[0027] With reference to Figs. 1, 2, 3 and 4, the frame (100) of the invention comprises a first profile (P1) and a second profile (P2) connected to the first profile (P1).

[0028] The first profile (P1) has a "T"-shaped longitudinal groove (S1) provided on one external lateral surface (B1). Such "T"-shaped groove (S1) of the first profile (P1) is sectionally provided with a base housing (1) having a width (L1) and a longitudinal opening (1 a) with width (L1a).

[0029] The second profile (P2) has a first "T"-shaped longitudinal groove (S2) obtained on one external lateral surface (B2). Such first "T"-shaped groove (S1) of the second profile (P2) is sectionally provided with a base housing (2) having a width (L2) and a longitudinal opening (2a) with width (L2a). The second profile (P2) has an end section (C) where the first "T"-shaped groove (S2) of the second profile (P2) ends. Such end section (C) is stopped against the external lateral surface (B1) of the first profile (P1) in correspondence of the "T"-shaped groove (S1) of the first profile (P1), in such manner that the "T"-shaped groove of the first profile (P1) and the first "T"-shaped groove of the second profile (P2) are mutually aligned.

[0030] The second profile (P2) has a second "T"-shaped longitudinal groove (S3) provided on the external lateral surface (B2) in opposite position to the first "T"-shaped groove (S2) of the second profile (P2). Such second "T"-shaped groove (S3) of the second profile ends on the end section (C) of the second profile. The second "T"-shaped groove (S3) of the second profile (P2) and the "T"-shaped groove (S1) of the first profile (P1) are mutually aligned.

[0031] With reference to Fig. 1, a first embodiment of a fixing square (3) disposed between the two profiles (P1, P2) is disclosed.

[0032] The fixing square (3) comprises a first wing (31) and a second wing (32) that are mutually inclined. The first wing (31) of the fixing square (3) is disposed inside the base housing (1) of the "T"-shaped groove (S1) of the first profile (P1). The second wing (32) of the fixing square (3) is disposed inside the base housing (2) of the first "T"-shaped groove (S2) of the second profile (P2).

[0033] The first profile (P1) has a longitudinal axis (A1) that is orthogonal to the longitudinal axis (A2) of the first profile and the two wings (31, 32) of the fixing square (3) are mutually orthogonal.

[0034] Each wing (31, 32) of the fixing square (3) has an internal side (FI) facing towards the profile (P1, P2) and an external side (FE) opposite to the internal side (FI).

[0035] Each wing (31, 32) of the fixing square (3) has a width (L31, L32) lower than the width (L1a, L2a) of the longitudinal opening (1 a, 2a) of the "T"-shaped groove (S1, S2) wherein it is inserted.

[0036] The frame (100) comprises a second fixing square (3) inserted in the second "T"-shaped groove (S3) of the second profile (P2) and in the "T"-shaped groove (S1) of the first profile (P1).

[0037] With reference to Figs. 3 and 4, each wing (31, 32) of the fixing square (3) comprises an eccentric locking means (M) that consists in a screw inserted in a hole provided on the wing (31, 32).

[0038] Such eccentric locking means (M) is shaped in such a way to let the total width of the wing (31, 32) increase until it reaches a width at least equal to the width (L1, L2) of the base housing (1, 2) where the wing (31, 32) of the fixing square (3) is inserted.

[0039] With reference to Figs. 2, 3 and 4, the screw of the eccentric locking means (M) comprises a head (4) disposed in correspondence of the external side (FE) of the wing (31, 32), preferably flush with said external side (FE). Moreover, such screw comprises a stem joined with the head (4) and an eccentric plate (5) fixed to an end of the stem and flush to the internal side (FI) of the wing (31, 32). Such eccentric plate (5) can be in an idle position, wherein it does not protrude laterally from the wing (31, 32), and in an operating position, wherein it protrudes laterally from the wing (31, 32), as shown in Figs. 2, 3 and 4.

[0040] The eccentric plate (5) has a knurled free edge (51) that interferes with the walls of the base housing (1, 2) of the groove (S, S2, S3) inside which the wing (31, 32) is disposed.

[0041] With reference to Figs. 1 and 2, the two wings (31, 32) of the fixing square have a hole (F1, F2) and the frame (100) advantageously comprises a self-drilling and self-tapping screw (V1) inserted in the hole (F1, F2) and screwed on the profile (P1, P2).

[0042] The head of said screw (V1) is tapered, just like the hole (F1, F2) that houses the screw (V1).

[0043] With reference to Figs. 6 and 7, the holes (F1, F2) of the wings (31, 32) of the fixing square (3) are elongated and have a longitudinal axis that is parallel or coinciding with the wing.

[0044] While mounting the frame, such provision permits to lock the fixing square with two screws that guarantees additional fixing between the two profiles, in addition to permanently stopping the fixing square with respect to the two profiles.

[0045] In order to obtain such an additional advantage, after rotating the eccentric locking means (M) of both wings (31, 32) of the fixing square, it is necessary to insert a screw into the corresponding hole (F1, F2), positioning the stem of the screw as distant as possible with respect to the corner that joins the two wings (31, 32) of the fixing square (3), as shown in Fig. 6.

[0046] In view of the above, by screwing the screws completely, it is possible to increase the force that holds together the two profiles (P1, P2) connected by the fixing square (3); this occurs when the tapered walls of the heads of the screws are stopped against the tapered walls of the elliptical holes (F1, F2), as shown in Fig. 7.

[0047] In fact it must be noted that, by mounting the screw in off-centered position with respect to the hole and by screwing it completely, because of tapering, the screw automatically tends to move the fixing square and position itself in the center of the hole (F1, F2). In other words, when the screw is tightened, the profile (P1, P2) joined to the screw is driven into translation and is pushed towards the other profile (P1, P2).

[0048] Athough in the description and in the attached figures reference is always made to a frame with profiles disposed in orthogonal position to form a "T", the fixing square of the invention can be also adjusted to frames with other configurations, such as cross frame, "Z"-shaped frames, "X"-shaped frames, etc.

[0049] With reference to Fig. 8, a second embodiment of the fixing square (300) is disclosed, wherein the eccentric locking means (M) is mounted only on the second wing (32) of the fixing square (300).

[0050] In such case, the first wing (31) of the fixing square comprises a portion (34) with increased width and a portion (35) with reduced width. The increased portion (34) and the reduced portion (35) protrude in opposite directions from the first wing (31) of the fixing square (300).

[0051] The first wing (31) of the fixing square (300) has a longitudinal axis (D-D).

[0052] As shown in Fig. 9, the increased portion (34) is shaped as a rectangular plate and is provided with a pair of parallel long sides (36), a pair of parallel short sides (37) and a thickness (H34), as indicated in Figs. 8 and 9.

[0053] The short sides (37) have a length (L37).

[0054] The increased portion (34) has a higher width (W34) than the width (L32) of the second wing (32) and is identical to the width (L1) of the "T"-shaped groove (S1) of the first profile (P1) wherein it is inserted. The reduced portion (35) has a lower width (W35) than the width (W34) of the increased portion (34).

[0055] The thickness (H34) of the increased portion (34) has a value that is identical to or lower than the depth (H1) of the "T"-shaped groove (S1) of the first profile (P1) wherein it is inserted.

[0056] The pair of parallel long sides (36) comprises a long front side (36a) from which the reduced portion (35) protrudes, and a long back side (36b) facing the side opposite to the reduced portion (35). The long front side (36a) is coplanar to the external side (FE) of the second wing (32).

[0057] The reduced portion (35) has a pair of parallel sides (38), which are perpendicular to the long front side (36a). The parallel sides have a length (L38).

[0058] The total length (L31) is obtained from adding the length (L38) of the parallel sides (38) of the reduced portion (35) with the length (L37) of the short parallel sides (37) of the increased portion (34). The total length (L31) of the first wing (31) is lower than the width (L1a) of the opening (1 a) of the "T"-shaped groove (S1) of the first profile (P1) wherein said first wing (31) is inserted.

[0059] The increased portion (34) of the first wing (31) of the fixing square (300) comprises a lateral rounded edge (39) in order to let the fixing square (300) rotate inside the "T"-shaped groove (S1) of the first profile (P1), as shown in Fig. 14.

[0060] With reference to Fig. 13, the rotation of the fixing square provides that the fixing square (300) goes from a position wherein the longitudinal axis (D-D) of the first wing (31) is transverse with respect to the longitudinal axis (A1-A1) of the first profile (P1), to a position (see Fig. 15) wherein the longitudinal axis (D-D) of the first wing (31) is parallel to the longitudinal axis (A1-A1) of the first profile (P1) and the internal side (FI) of the second wing (32) of the fixing square (300) is faced towards the base housing (2) of the first "T"-shaped groove (S2) of the second profile (P2).

[0061] As shown in Fig. 18, the frame (100) comprises a first glass-stop (6a) fixed to the first profile (P1) and a second glass-stop (6b) fixed to the second profile (P2). As shown in Figs. 17 to 20, each glass-stop (6a, 6b) comprises:

• two flexible tabs (61) comprising hook-shaped end sections (61 a), which are intended to be elastically fitted to the edges (1b,2b) of the "T"-shaped groove (S1, S2, S3) in such manner to firmly fix the glass-stopper (6a,6b) to a profile (P1,P2); said hook-shaped end sections (61 a) having an internal distance (W61 a) between them,
• a main wall (63) that is perpendicular to said tabs (61), and
• two transverse end sections (62).

[0062] A transverse end section (62) of the first glass-stop (6a) is stopped against the second profile (P2), whereas the transverse end section (62) of the second glass-stop (6b) is stopped against the main wall (63) of the first glass-stop (6a).

[0063] The reduced portion (35) of the first wing (31) of the fixing square (300) is disposed between the tabs (61).

[0064] The reduced portion (35) of the first wing (31) of the fixing square (300) has a lower width (W35) than the internal distance (W61a) between the hook-shaped end sections (61 a) of the tabs (61) of the glass-stop (6a, 6b), as shown in Fig. 20.

[0065] With reference to Figs. 13 to 16, the second wing (32) of the fixing square (300) has a lower width (L32) than the width (L2a) of the longitudinal opening (2a) of the first "T"-shaped groove (S2) of the second profile (P2) wherein it is inserted.

[0066] As shown in Figs. 13 to 18, in order to insert the glass-stops (6a, 6b) in the profiles (P1, P2) it is necessary:

• to insert the first wing (31) of the fixing square (300) in the base housing (1) of the "T"-shaped groove (S1) of the first profile (P1) in such manner that the increased portion (34) and the reduced portion (35) of the first wing (31) are interfaced with the base housing (1) of the "T"-shaped groove (S1) of the first profile (P1) and the longitudinal axis (D-D) of the first wing (31) is transverse to the longitudinal axis (A1-A1) of the first profile (P1);
• to rotate the fixing square (300) in such manner that the longitudinal axis (D-D) of the first wing (31) is parallel to the longitudinal axis (A1-A1) of the first profile (P1) and the internal side (FI) of the second wing (32) of the fixing square (300) is faced towards the base housing (2) of the first "T"-shaped groove (S2) of the second profile (P2);
• to make the fixing square (3) slide until the internal side (FI) of the second wing (32) is stopped against the base housing (2) of the first "T"-shaped groove (S2) of the second profile (P2);
• to push the tabs (61) of the first glass-stop (6a) one against the other and to insert the hook-shaped end sections (61 a) of the tabs (61) in the first profile (P1) in such manner that the hook-shaped end sections (61 a) are fitted to the edges (1 b) that define the opening (1 a) of the "T"-shaped groove (S1) of the first profile (P1), as shown in Fig. 17; in this step the transverse end section (62) of the first glass-stop (6a) must be stopped against the second profile (P2);
• to push the tabs (61) of the second glass-stop (6b) one against the other and to insert the hook-shaped end sections (61 a) of the tabs (61) in the second profile (P2) in such manner that the hook-shaped end sections (61 a) are stopped against the edges (2b) that define the opening (2a) of the "T"-shaped groove (S2) of the second profile (P2), as shown in Fig. 18; in this step the transverse end section (62) of the second glass-stop (6b) must be stopped against the main wall (63) of the first glass-stop (6b) in such manner that the two glass-stops are in consecutive adjacent position.

[0067] Because of the increased portion (34) of the first wing (31), the fixing square (300) is prevented from coming out from the base housing (1) of the "T"-shaped groove (S2) of the first profile (P1).

[0068] Because of the reduced portion (35) of the first wing (31) the first glass-stop (6a) can be inserted in the first profile (P1) and positioned in such manner that said first glass-stop (6a) is stopped against the second profile (P2).

[0069] Successively, the second glass-stop (6b) can be inserted in the second profile and stopped against the main wall (63) of the first glass-stop (6a). In view of the above the glass-stops (6a, 6b) can be positioned in the profiles (P1, P2) and stopped mutually, in orthogonal position without interruption, even if the fixing square (300) is inserted in the "T"-shaped groove.

Claims

1. Frame (100) comprising:

- a first profile (P1) having a longitudinal axis (A1-A1), at least one external lateral surface (B1) and a "T"-shaped longitudinal groove (S1) provided on said at least one external lateral surface (B1); said "T"-shaped groove (S1) being provided with a base housing (1) with a width (L1) and a longitudinal opening (1 a) with width (L1a);

- a second profile (P2) provided with a longitudinal axis (A2-A2), at least one external lateral surface (B2) and a first "T"-shaped longitudinal groove (S2) provided on said at least one external lateral surface (B2); said first "T"-shaped groove (S2) being provided with a base housing (2) having a length (L2) and a longitudinal opening (2a) with width (L2a); said second profile (P2) being provided with an end section (C), whereon said first "T"-shaped groove (S2) ends; said end section (C) being stopped against the external lateral surface (B1) of said first profile (P1) in correspondence of the "T"-shaped groove (S2) of the first profile (P1); said first "T"-shaped groove (S2) of the second profile (P2) and said "T"-shaped groove (S1) of said first profile (P1) being aligned;

- a fixing square (3; 300) between said two profiles (P1,P2); said fixing square (3; 300) comprising a first wing (31) and a second wing (32) that are mutually inclined; said first wing (31) being disposed inside said base housing (1) of the "T"-shaped groove (S1) of said first profile (P1); said second wing (32) being disposed inside said base housing (2) of the first "T"-shaped groove (S2) of said second profile (P2); each wing (31, 32) being provided with an internal side (FI), faced towards the profile and an external side (FE) in opposite position to the internal side (FI);

frame characterized in that at least one wing (31, 32) of the fixing square (3; 300) has a lower width (L31, L32) than the width (L1a, L2a) of the longitudinal opening (1 a,2a) of the "T"-shaped groove (S1,S2) wherein it is inserted; said at least one wing (31, 32) of said fixing square (3; 300) comprising an eccentric locking means (M) configured in such manner to permit the increase of the total width of the wing (31, 32) until a width at least equal to the width (L1, L2) of the base housing (1, 2) wherein the wing (31, 32) is inserted.

2. The frame of claim 1, wherein said eccentric locking means (M) comprises a screw inserted into a hole provided on the corresponding wing (31, 32); said screw comprising:

- a head (4) disposed in correspondence of the external side (FE) of the wing (31, 32), preferably flush with said external side (FE);

- a stem joined with said head (4) and ending with a free end;

- an eccentric plate (5) fixed on the free end of said stem and flush with the internal side (FI) of the wing (31, 32); said eccentric plate (5) being intended to be in an idle position, wherein it does not protrude laterally from the wing (31, 32), and an operating position, wherein it laterally protrudes from the wing (31, 32); said eccentric plate (5) being provided with a free edge (51) that interferes with the walls of the base housing (1,2) of the groove wherein the wing (31, 32) is disposed.

3. The frame (100) of claim 2, wherein said free edge (51) of said eccentric plate (5) is knurled.

4. The frame (100) of any one of the preceding claims, wherein at least one of said two wings (31, 32) is provided with a hole (F1, F2); said frame comprising a screw (V1) inserted inside said hole (F1, F2) and screwed on the corresponding profile (P1, P2).

5. The frame (100) of claim 4, wherein said screw is self-dripping/self-tapping.

6. The frame (100) of claim 4 or 5, wherein the head of said screw (V1) is disposed flush with respect to the external side (FE) of the corresponding wing (31, 32).

7. The frame (100) of any one of claims 4 to 6, wherein the head of said screw (V1) is tapered and the hole (F1, F2) is tapered.

8. The frame (100) of any one of claims 4 to 7, wherein said hole (F1, F2) is elongated and provided with a longitudinal axis that is parallel or coinciding with the one of the wing (31, 32).

9. The frame (100) of any one of the preceding claims, wherein said second profile (P2) is provided with a second "T"-shaped (S3) longitudinal groove provided on said at least one external lateral surface (B2) in opposite position to the first "T"-shaped groove (S2) of said second profile (P2); said second "T"-shaped groove (S3) ending on the end section (C); said second "T"-shaped groove (S3) of the second profile (P2) and said "T"-shaped groove (S1) of said first profile (P1) being mutually aligned; said frame comprising a second fixing square (3; 300) inserted inside said second "T"-shaped groove (S3) of the second profile (P2) and inside said "T"-shaped groove (S1) of said first profile (P1).

10. The frame (100) of any one of the preceding claims, wherein the axes (A1-A1 ;A2-A2) of the profiles are in orthogonal position and the two wings (31, 32) of the fixing square (3; 300) are mutually orthogonal.

11. The frame (100) of independent claim 1, wherein said eccentric locking means (M) is mounted only on the second wing (32) of the fixing square (300);
said first wing (31) of the fixing screws (300) comprising an increased portion (34), which is shaped as a rectangular plate with width (W34), and a reduced portion (35) with width (W35) lower than the width (W34) of the increased portion (34);
wherein the increased portion (34) and the reduced portion (35) protrude in opposite directions from said first wing (31);
said increased portion (34) of the first wing (31) having a higher width (W34) than the width (L32) of the second wing (32) and identical to the width (L1) of the "T"-shaped groove (S1) of the first profile (P1);
said "T"-shaped groove (S1) of the first profile (P1) having a depth (H1);
and said increased portion (34) of the first wing (31) having a thickness (H34) identical to the depth (H1) of the "T"-shaped groove (S1) of the first profile (P1).

12. The frame of claim 11, wherein said increased portion (34) comprises a pair of long parallel side (36) and a pair of short parallel sides (37) with length (L37); said pair of long parallel sides (36) comprising a long front side (36a), from which said reduced portion (35) protrudes, and a long back side (36b) faced on the opposite side with respect to said reduced portion (35); said long front side (36a) being coplanar to the external side (FE) of the second wing (32).

13. The frame (100) of claim 12, wherein said reduced portion (35) is provided with a pair of parallel sides (38), which are perpendicular to the long front side (36a) and have a length (L38); the total length (L31) of the first wing (31) of the fixing square (300) is obtained by adding the length (L38) of said parallel sides (38) of the reduced portion (35) with the length (L37) of the short parallel sides (37) of the increased portion (34); said total length (L31) being lower than the width (L1a) of the opening (1 a) of the "T"-shaped groove (S1) of the first profile (P1) wherein said first wing (31) is inserted.

14. The frame of any one of claims 11 to 13, comprising at least one glass-stop (6a, 6b) fitted to the profile (P1, P2); said glass-stop (6a, 6b) comprising two flexible tabs (61) comprising hook-shaped end sections (61 a), which are intended to be elastically fitted to the edges (1 b) of the "T"-shaped groove (S1) of the first profile (P1) or to the edges (2b) of the first "T"-shaped groove (S2) of the second profile (P2), in such manner to firmly fix the glass-stop (6a, 6b) to a profile (P1, P2); said hook-shaped end sections (61 a) having an internal distance (W61 a); said reduced portion (35) being disposed between the tabs (61) and having a lower width (W35) than the internal distance (W61 a) between the hook-shaped end sections (61 a) of the tabs (61) of the glass-stop (6a, 6b).

15. The frame of claim 14, comprising a first glass-stop (6a) fitted to the first profile (P1) and a second glass-stop (6b) fitted to the second profile (P2); each glass-stop (6a, 6b) comprising a main wall (63) perpendicular to the tabs (61) and two end sections (62); said end section (62) of the first glass-stop (6a) being stopped against the second profile (P2); said end section (62) of the second glass-stop (6b) being stopped against the main wall (63) of the first glass-stop (6a).

16. The frame (100) of any one of claims 11 to 15, wherein the increased portion (34) of the first wing (31) of the fixing square (300) comprises a lateral rounded edge (39) in order to let the fixing screw (300) rotate inside the "T-shaped groove (S1) of the first profile (P1); said rotation providing that the fixing square (300) goes from a position wherein the longitudinal axis (D-D) of the first wing (31) is transverse with respect to the longitudinal axis (A1-A1) of the first profile (P1), to a position wherein the longitudinal axis (D-D) of the first wing (31) is parallel to the longitudinal axis (A1-A1) of the first profile (P1) and the internal side (FI) of the second wing (32) of the fixing square (3) is stopped against the base housing (2) of the first "T"-shaped groove (S2) of the second profile (P2).

17. The fixing square (3; 300) of any one of the preceding claims.

Drawing