Concealed hinge system for doors or windows

Abstract

A concealed hinge system (1) for a door or window, the door or window including a fixed frame (100) defining an opening and a movable slat (200) closing the opening, each of the fixed frame and the movable slat being formed of a profile (101, 201) having at least one peripheral channel (102, 202), the hinge system comprising: a first body (2) fixably connected to the peripheral channel (102) of the profile (101) of the fixed frame (100); and a second body (3) fixably connected to the peripheral channel (102) of the profile (201) of the movable slat (200). In the side passage (202); and a rod assembly (4) that hinges the first body (2) and the second body (3) to each other; the rod assembly (4) includes: a first rod (5) having a first end (5a) rotatably hinged to the first body (2) about a first rotation axis (A1) fixed relative to the first body (2), a second end (5b) rotatably hinged to the second body (3) about a second rotation axis (A2) fixed relative to the second body (3), and an intermediate portion (5c) between the first end (5a) and the second end (5b); a second rod (6) The second rod (6) has a first end (6a) hinged to the first body (2), a second end (6b) rotatably hinged to one end of the second body (3) about a third rotation axis (A3), and an intermediate portion (6c) between the first end (6a) and the second end (6b); the first rod (5) and the second rod (6) are rotatably hinged to each other about a fourth rotation axis (A4) corresponding to their intermediate portions (5c, 6c); the second, third, and fourth rotation axes are parallel to the first rotation axis (A1); wherein the first end (6a) of the second rod (6) is connected by a kinematic pair (7, 8) Hinged to the first body (2), the kinematic pairs (7, 8) enable the first end (6a) of the second rod (6) to rotate and translate relative to the first body (2) about a fifth rotation axis (A5) parallel to the first rotation axis (A1) and along a trajectory (T), the trajectory (T) extending toward the first rotation axis (A1), and for at least a portion, the trajectory (T) is tangent to or coincides with at least one straight direction (R) contained in a plane perpendicular to the first rotation axis (A1), wherein the at least one straight direction (R) is incident relative to the plane (PA) defined by the opening.

Description

Technical Field

[0001] The present invention relates to a so-called "hidden" hinge system for connecting a fixed frame to a movable slat of a door or window and the hinge system allows the movable slat to open to a maximum angle of 180° relative to the fixed frame. Background Technology

[0002] Various hinge systems are known for door or window slats used in homes, offices, or industrial sheds. These hinge systems allow the slats to rotate not only relative to the fixed frame of the door or window during opening and closing movements, but also to move perpendicular to the plane in which the fixed frame lies, thereby moving closer to and away from the fixed frame.

[0003] Examples of such hinge systems are described in EP1830024 and EP1918498.

[0004] In particular, concealed hinge systems that allow movable blades to open to a maximum angle of 180° relative to the fixed frame are known.

[0005] Examples of such concealed hinge systems can be found, for example, in EP3256676 (GSG), EP3322873 (Fapim), EP2811092 (Schuco), EP2708692 (WSSWILH SCHLECHTENDAHL & SOEHNE GMBH & CO KG) or patents IT1406348 and IT102017000126014 (EP3480398) under the same owner.

[0006] What all these hinge systems have in common is that they include a first body fixed in a peripheral channel of a profile of a fixed frame, a second body fixed in a peripheral channel of a corresponding profile of a movable blade, and a rod assembly that hinges the first and second bodies together such that the second body performs a rotational translational motion during the opening and closing of the movable blade relative to the fixed frame, the rotational translational motion having a motion component perpendicular to the plane defined by the opening (gap) defined by the fixed frame itself.

[0007] The rod assembly typically includes at least two rods, namely a first rod and a second rod, which are hinged to each other in a "scissor-like" manner corresponding to their middle portions, and the opposite ends of the two rods are rotatably hinged to a first body and a second body respectively with respect to corresponding axes of rotation, wherein at least one of the opposite ends of the two rods is provided with another component of motion relative to the first body or the second body.

[0008] For example, in a system known from EP3256676 (GSG), one end of one of the two rods is rotatable about a pin that is slidably inserted into a slot obtained in a first body (i.e., the one fixed to the frame), wherein the slot has a straight extension that extends along the longitudinal direction of the first body in a plane parallel to the blade.

[0009] In such a solution, when the movable blades are opened, the opening defined by the fixed frame is reduced at least in part by the size of the blades themselves.

[0010] The hinge systems known from EP3322873 (Fapim) and EP2811092 (Schuco) at least partially solve this drawback, in which one end of the two rods, in addition to being able to rotate relative to the corresponding axis of rotation, also rotates through a circumferential arc via a connecting rod component.

[0011] However, in all known solutions, when the movable blades are fully opened (180°), the movable blades rest against the fixed frame or associated wall, which presents difficulties in assembly / disassembly and use, making it difficult, for example, to safely open the movable blades.

[0012] Furthermore, such a reduced distance does not allow for the installation of additional support systems, which are also "hidden" in nature. These support systems act between the fixed frame and the movable blades and are used to increase the load-bearing capacity of the hinge system, especially for opening angles equal to or greater than 90°. Summary of the Invention

[0013] Therefore, one object of the present invention is to provide a concealed hinge system that overcomes the disadvantages of the prior art.

[0014] One object of the present invention is to provide a concealed hinge system that allows movable fan blades to open relative to a fixed frame up to a maximum opening angle equal to 180°, thereby allowing the opening (gap) defined by the fixed frame to be completely free.

[0015] Another object of the present invention is to provide a concealed hinge system that allows a movable blade to be opened relative to a fixed frame up to a maximum opening angle equal to 180°, thereby holding the movable blade at a desired distance from the fixed frame.

[0016] Another object of the present invention is to provide a concealed hinge system that simplifies the assembly and disassembly of a movable blade fan, ensures the support of the movable blade fan in any open state under any circumstances, even avoids the risk of disassembly, and eliminates the need for additional components to temporarily connect the concealed hinge system or its parts to the frame and / or blade fan profile.

[0017] Another object of the present invention is to provide a concealed hinge system that allows a movable fan blade to be opened relative to a fixed frame up to a maximum opening angle of 180°, wherein the concealed hinge can easily and safely adjust the maximum opening angle according to different assembly and installation needs under any circumstances.

[0018] These and other objects of the present invention are achieved by a concealed hinge system for doors or windows having the features of claim 1.

[0019] Further features are specified in the dependent claims. Attached Figure Description

[0020] These and other advantages of the invention will become more apparent to those skilled in the art from the following detailed description of some exemplary and non-limiting embodiments illustrated with reference to the accompanying drawings:

[0021] Figure 1 A portion of a fixed frame and a movable blade fan, connected by a concealed hinge system according to the invention, is shown in an isometric view.

[0022] Figure 1A for Figure 1 Floor plan;

[0023] Figures 2, 3, and 4 show different opening positions of the movable blade fan relative to the fixed frame, similar to... Figure 1 The figure shows that, in Figure 2, there is an additional support system for the movable blade fan relative to the fixed frame;

[0024] Figure 3A is a plan view viewed from above in Figure 3, in which there is an additional support system for the movable blades relative to the fixed frame between the movable blades and the fixed frame.

[0025] Figure 5 An exploded isometric view of the concealed hinge system according to the present invention;

[0026] Figures 6, 7, and 8 are shown in isometric view. Figure 5 The hinge system is assembled in a closed position, a partially open position, and a 90° open position, respectively;

[0027] Figures 9 to 14 A top plan view shows a hinge system according to the invention in different successive open positions, the hinge system being mounted on a profile of a fixed frame and a movable blade, shown in section in part.

[0028] Figure 15 The details of the concealed hinge system according to the invention (i.e., the first body) are schematically shown in a possible alternative embodiment.

[0029] Figure 16 Similar to Figure 2, but with a limiter for the opening degree of the hinge system according to the present invention;

[0030] Figure 17 and 18 Shown at enlarged scale in both plan view and exploded view, including Figure 16 Details of the limiter;

[0031] Figure 19 shows the concealed hinge system according to the invention in the closed position, wherein the second body is disassembled;

[0032] Figures 19A and 19B show the details of Figure 19 at an enlarged scale, in which the second body is assembled and is in two different positions of the hinge system, namely the closed position and the open position.

[0033] Figure 20 , 21 22 and 22 are respectively a bottom view, a longitudinal section view and a top view of the second body of the hinge system according to the present invention. Detailed Implementation

[0034] Referring to the attached diagram, the concealed hinge system for doors or windows is generally indicated by 1.

[0035] The hinge system 1 is referred to as “concealed” because, as can be clearly seen from the attached drawings, when the door or window is installed, the hinge system is not visible from the outside of the door or window when the door or window is closed, and is only partially visible from the outside of the door or window when the door or window is open.

[0036] Hing system 1 is suitable for doors or windows that open by swinging or tilting and turning.

[0037] The hinge system 1 is suitable for doors or windows including a fixed frame 100 and a movable blade 200, the fixed frame 100 and the movable blade 200 being shown schematically and partially by way of example only in some of the accompanying drawings.

[0038] Both the fixed frame 100 and the movable blade 200 are formed by profiles 101 and 201, each of which has at least one peripheral channel 102 or 202. The peripheral channels are respectively implemented on the inner periphery of the frame 100 and the outer periphery of the blade 200, and the hinge system 1 is received in the peripheral channels.

[0039] The fixed frame 100 defines and delineates the opening closed by the movable blades 200. In the following text, "plane of the opening" will be referred to as such, meaning, for the purposes of this expression, a generally vertical plane on which the opening or gap defined by the fixed frame 100 extends, and which is formed by... Figure 1The trace PA shown in Figure 4 is schematically indicated. When the movable blade 200 is in the closed position on the fixed frame 100, the plane PA of the opening is parallel to the movable blade 200. In other words, the plane PA of the opening is perpendicular to the plane defined by the bottom of the channel 102 and parallel to the longitudinal extension of the channel 102 itself.

[0040] The accompanying drawing shows a movable blade 200 that is rotatably mounted on a fixed frame 100 about a vertical axis via a hinge system 1, or in certain cases via a pair of hinge systems 1 (one corresponding to the lower corner of the movable blade 200 and one corresponding to the upper corner of the movable blade 200 and not shown, similar to the first).

[0041] Therefore, in the following description, only the hinge system 1 that connects the lower corner of the movable blade 200 to the fixed frame 100 will be described, but a similar hinge system 1 can be provided to connect the upper corner of the movable blade 200 to the fixed frame 100.

[0042] The hinge system 1 according to the invention is adapted to allow a maximum opening angle of 180° between the movable fan blade 200 and the fixed frame 100.

[0043] Hinge system 1 includes:

[0044] - First body 2, the first body can be fixedly connected to the peripheral channel 102 of the profile 101 of the fixed frame 100;

[0045] - Second body 3, which can be fixedly connected to the peripheral channel 202 of the profile 201 of the movable blade fan 200; and

[0046] - Rod assembly 4, which hinges the first body 2 and the second body 3 to each other.

[0047] The lever assembly 4 is configured to allow the movable blade 200 to perform rotational-translational motion relative to the fixed frame 100, wherein it moves in a motion component perpendicular to the plane PA of the opening during the opening and closing of the door or window.

[0048] The rod assembly 4 includes a first rod 5 and a second rod 6, each rod having a first end of 5a and 6a respectively, a second end of 5b and 6b respectively, and an intermediate portion of 5c and 6c respectively between the respective first end and second end.

[0049] The first rod 5 and the second rod 6 are both hinged to the first body 2 and the second body 3 at their respective opposite ends.

[0050] Then, the first rod 5 and the second rod 6 are hinged to each other at their middle portions 5c and 6c.

[0051] The first stroke, number 5, has:

[0052] - First end 5a, the first end is rotatably hinged to the first body 2 about a first rotation axis A1 fixed relative to the first body 2.

[0053] - Second end 5b, the second end is rotatably hinged to the second body 3 about a second rotation axis A2 that is parallel to the first rotation axis A1 and fixed relative to the second body 3.

[0054] The second rod has:

[0055] - First end 6a, the first end is hinged to the first body 2.

[0056] - Second end 6b, which is rotatably hinged to one end of the second body 3 about a third rotation axis A3 that is parallel to the first rotation axis A1 and fixed relative to the second body 3.

[0057] The first rod 5 and the second rod 6, corresponding to their middle portions 5c and 6c, are rotatably hinged to each other around a fourth rotation axis A4 that is parallel to the first rotation axis A1 and fixed relative to the first rod and the second rod.

[0058] According to the present invention, the first end 6a of the second rod 6 is hinged to the first body 2 via a kinematic pair, the kinematic pair enabling the first end 6a of the second rod 6 to revolve around a fifth rotation axis A5 parallel to the first rotation axis A1 and along a trajectory T relative to the first body 2. Figure 15 The relative rotational and translational motion of the trajectory T extends toward the first rotation axis A1, and for at least a portion thereof, the trajectory T is tangent to or coincides with at least one straight direction R contained in a plane perpendicular to the first rotation axis A1, wherein the at least one straight direction R is incident relative to the plane PA of the opening.

[0059] Typically, the plane PA of the opening is a vertical plane, and the axis of rotation of the rod assembly 4, including the first axis of rotation A1, is vertical; therefore, the at least one linear direction R extends in a horizontal plane and is incident on the plane PA of the opening, that is, the linear direction R is incident relative to the vertical plane containing the opening or gap defined by the fixed frame 100 or in any case by the fixed frame 100, and forms a non-zero angle α with the vertical plane.

[0060] Therefore, at least one linear direction R does not belong to and is not parallel to the plane PA of the opening.

[0061] In a preferred embodiment, the kinematic pair that hinges the first end 6a of the second rod 6 to the first body 2 includes a pin 7 that defines a fifth axis of rotation A5 and is fixed to the first body 2 at the distal portion of the first body 2 relative to the first axis of rotation A1, and is slidably inserted along a slot 8 realized in the first end 6a of the second rod 6.

[0062] The slot 8 is straight and extends along the longitudinal extension of the second rod 6.

[0063] The pin 7 includes a handle 7a that is slidably inserted into the slot 8 and whose lower end engages in a corresponding hole 9 implemented in the first body 2. Thus, the pin 7 is secured to the first body 2. The upper end of the pin 7 widens into a head 7b, the diameter of which is greater than the width of the slot 8, and the head 7b slides on the first end 6a of the second rod 6.

[0064] However, alternative embodiments are not excluded, wherein the kinematic pair hinged to the first end 6a of the second rod 6 to the first body 2 includes a pin defining a fifth axis of rotation A5 and fixed to the first end 6a of the second rod 6, wherein the pin is slidable in a shaped slot 8' implemented in the first body 2 and defines as described above and as follows Figure 15 The trajectory T is schematically shown in the diagram.

[0065] The slot 8' corresponds to a portion of the first body 2, the end of which is distal relative to the first body 2 defining the first axis of rotation A1.

[0066] It should be noted that the trajectory T includes an arcuate segment corresponding to the end of the first body 2 opposite to the end defining the first axis of rotation A1. This arcuate segment connects to a substantially straight segment extending toward the end of the first body 2 defining the first axis of rotation A1. This substantially straight segment, or in any case, the straight line R tangent to it, is incident relative to the plane PA of the opening (a vertical plane containing the opening or gap defined by the fixed frame 100) and forms a non-zero angle α with the plane PA of the opening.

[0067] It can be noted that the first rotation axis A1 is an axis that, under the assembly conditions of the hinge system 1, is close to the profile of the upright portion of the fixed frame 100 to which the movable blade 200 is hinged.

[0068] The components of hinge system 1 are described in more detail below.

[0069] The first body 2 has a longitudinally extended shape and is essentially plate-shaped, so that it can be inserted into the peripheral channel 102 of the profile 101.

[0070] The first body 2 extends between the first end 2a and the second end 2b.

[0071] Similarly, the second body 3 has a longitudinally extended shape and is essentially plate-shaped, so that it can be inserted into the peripheral channel 202 of the profile 201.

[0072] The second body 3 extends between the first end 3a and the second end 3b. Corresponding to the first end 3a, there is a protruding body 3' that forms an angle with the second body 3.

[0073] The first ends 2a and 3a of the first body 2 and the second body 3 are respectively referred to as the first ends. Under assembly conditions, the first ends are angularly positioned corresponding to the fixed frame 100 and the movable blade fan 200, and when the hinge system 1 is in the closed position, the first ends overlap with the rod assembly 4 between them.

[0074] The first axis of rotation A1 is defined by a first pin 10, which is rotatably inserted into a corresponding first through opening 11 corresponding to the first end 5a of the first rod 5, and engages in a corresponding hole 12 in the first body 2 near the first end 2a. It should be noted that the first pin 10 and the corresponding hole 12 engaging therewith each preferably have flat surfaces extending parallel to the longitudinal edge of the first body 2.

[0075] The second end 5b of the first rod 5 is hinged to the second body 3 via a connecting rod 13. The opposite ends 13a and 13b of the connecting rod 13 are respectively hinged to the second body 3 (thus defining the second axis of rotation A2) and to the second end 5b of the first rod 5 (thus defining a sixth axis of rotation A6 parallel to the second axis of rotation A2). The second axis of rotation A2 is defined by a corresponding pin, referred to as the second pin 14 or shaped pin. The shank of the second pin 14 engages at its lower end in a corresponding hole 15 realized at the first end 13a of the connecting rod 13 and is inserted into a corresponding through opening 16 obtained in the second body 3. The through opening 16 defines a hollow seat, which, together with the shank of the second pin 14, forms a cylindrical / rotoidal kinematic pair that precisely defines the second axis of rotation A2 and will be described below.

[0076] The second end 13b of the connecting rod 13 is hinged to the second end 5b of the first rod 5 by a corresponding pin 17, which passes through the through opening 18 corresponding to the second end 13b of the connecting rod 13 with play, and the lower end of the pin 17 engages in the corresponding hole 19 obtained in the second end 5b of the first rod 5.

[0077] The second end 6b of the second rod 6 supports the third pin 20 that defines the third axis of rotation A3.

[0078] The lower end of the third pin 20 engages in the corresponding hole 21 obtained at the second end 6b of the second rod 6; thus, it is fixed to the second rod 6.

[0079] The third pin 20 is rotatably and with clearance received in a cylindrical seat 22 realized in the protruding body 3', which forms an integral part of the second body 3.

[0080] It should be noted that the head of the third pin 20 is hemispherical to mate with a corresponding cap inside the cylindrical seat 22, so as to allow the second body 3 to tilt relative to the plane PA of the opening relative to the second rod 6 to perform the assembly / disassembly operation of the fixing device and / or allow the movable blade fan 200 to tilt open.

[0081] The first rod 5 and the second rod 6 are hinged to their respective intermediate portions 5c and 6c by the fourth pin 23 that defines the fourth axis of rotation A4.

[0082] It can be noted that the arm of the first rod 5 extending between the first end 5a of the first rod 5 and the fourth rotation axis A4 (fulcrum) is smaller than the arm of the first rod 5 extending from the fourth rotation axis A4 to the second end 5b of the first rod 5.

[0083] Similarly, the arm of the second rod 6 extending between the first end 6a of the second rod 6 and the fourth rotation axis A4 (fulcrum) is longer than the arm of the second rod 6 extending from the fourth rotation axis A4 to the second end 6b of the second rod 6.

[0084] The fourth pin 23 has a handle that passes through a corresponding through hole 24 obtained in the second rod 6 with clearance, and the handle engages at its lower end in a hole 25 obtained in the first rod 5.

[0085] According to another aspect of the invention, the hinge system 1 further includes a limiter 26 for the magnitude of the opening angle of the movable blade 200 relative to the fixed frame 100.

[0086] The limiter 26 includes a body that is preferably plate-shaped, which may be engaged at the first end 6a of the second rod 6 or at the first body 2 near the second end 2b of the first body 2, and the body is provided with a portion 27 that may be stacked or inserted into slots 8, 8', thereby reducing the effective length for sliding the pin 7 along the slots 8, 8'.

[0087] The limiter 26 can be removably connected to the second rod 6 or the first body 2, for example, by means of a snap-fit ​​connection.

[0088] A portion 27 of the main body of the limiter 26 has at least one shaped stop surface defining an end travel, and a corresponding portion of the pin 7 abuts against said stop surface at the end of its sliding relative to slots 8, 8'. In the depicted example, portion 27 has a first stop surface 28 and a second stop surface 29, the shank 7a of the pin 7 may abut against the first stop surface 28, and the head 7b of the pin 7 may abut against the second stop surface 29, the first stop surface 28 being lowered relative to the second stop surface 29 to be received in slots 8, 8'.

[0089] It should be noted that, in the accompanying drawings, the limiter 26 is shown as reducing the maximum opening angle of the movable blade 200 relative to the fixed frame 100 from 180° to 90°. As will be immediately apparent to those skilled in the art, the limiter 26 can be configured, for example, by changing the extension of the portion 27, to reduce the maximum opening angle of the movable blade 200 relative to the fixed frame 100 to a value even different from 90°, such as 110° or other values.

[0090] Furthermore, according to another aspect of the invention, the connection between the second pin 14 (or forming pin) and the hollow seat defined by the through opening 16 for defining the second axis of rotation A2 is configured to realize a cylindrical pair with defined radial clearance when the hinge system 1 is in the closed position of the movable blade 200 on the fixed frame 100, and a rotary pair after the rotational-translational movement of the movable blade 200 relative to the fixed frame 100 generated by the hinge system 1 itself, when the hinge system 1 is in any open position of the movable blade 200 relative to the fixed frame 100.

[0091] As will become clearer below, such a connection ensures that when the hinge system 1 is in the closed position, the second body 3 can tilt relative to the first rod 5 and / or the connecting rod 13, and thus the movable blade 200 can tilt relative to the fixed frame 100. This facilitates the assembly and disassembly of the movable blade 200 on the fixed frame 100—as described below, this can be achieved by tilting the movable blade 200 relative to the fixed frame 100 and by inserting the second pin 14 into the hollow seat defined by the through opening 16 and the third pin 20 into the corresponding cylindrical seat 22—and / or by making the movable blade 200 tilt relative to the fixed frame 100 to tilt and open a door or window (if provided). Simultaneously, such a connection ensures that in any “swinging” open position of the movable blade 200 relative to the fixed frame 100, the second body 3 is stably anchored to the first rod 5 and / or the connecting rod 13, thereby eliminating the risk of the movable blade 200 being lifted and detached from the frame 100.

[0092] More specifically, it should be noted that the term "cylindrical pair" refers to a kinematic pair in which, in addition to the possibility of relative rotational movement (in the example discussed, rotational movement occurring within an angle of less than 360°) between two coaxial cylindrical elements forming the kinematic pair, relative axial sliding of one element relative to the other (in a specific example, sliding in the separation direction by lifting the second body 3 from the first rod 5 or from the connecting rod 13) is also possible. Conversely, "revolute pair" refers to a kinematic pair in which, between two coaxial cylindrical elements forming the kinematic pair, only relative rotational movement is possible (in this example, relative rotational movement occurring within an angle of less than 360°), which prevents relative axial sliding of one element relative to the other.

[0093] In this example:

[0094] When the hinge system 1 is in the closed position of the movable blade 200 on the fixed frame 100, the cylindrical joint defined by the connection between the second pin 14 and the hollow seat defined by the through opening 16 is adapted to allow relative axial sliding between the second pin 14 and the hollow seat in the separation direction of the second body 3 from the first rod 5 or from the connecting rod 13.

[0095] When the hinge system 1 is in any open position of the movable blade 200 relative to the fixed frame 100, the revolute joint defined by the connection between the second pin 14 and the hollow seat defined by the through opening 16 eliminates this relative axial sliding of the second pin 14 relative to the hollow seat defined by the through opening 16.

[0096] As will be readily understood by those skilled in the art, such a connection is achieved by shaping the second pin 14 and the corresponding hollow seat such that one is rotatably accommodated in the other, wherein the second pin 14 and the corresponding hollow seat have corresponding mutually cooperating shaped elements to constrain relative axial sliding between the second pin 14 and the corresponding hollow seat by means of obstruction, and interact only after relative rotation between the second pin 14 and the corresponding hollow seat themselves.

[0097] Referring specifically to Figures 19 to 22, the hollow seat includes a first longitudinal section 160 and a second longitudinal section 161.

[0098] The first longitudinal section 160 extends through its lower end to the lower surface of the second body 3, that is, the surface of the second body 3 facing the first rod 5 and / or the connecting rod 13.

[0099] The second longitudinal section 161 extends through its upper end to the upper surface of the second body 3, that is, the bottom surface of the second body 3 facing the peripheral channel 202 in the assembled state.

[0100] The first longitudinal section 160 and the second longitudinal section 161 follow each other along the longitudinal axis of the through opening 16, which coincides with the second rotation axis A2.

[0101] Corresponding to the first longitudinal section 160, the cross-section of the hollow seat includes a circular portion 162 extending into a radial protrusion 163, the end of which is defined by an arc of a circumference concentric with the circular portion 162, the circumference defining the end of the protrusion 163 being concentric with the circumference defining the circular portion 162 and having a larger diameter than the circumference defining the circular portion 162.

[0102] Corresponding to the second longitudinal section 161, for at least a portion of the circular portion 162, the cross-section of the hollow seat widens from the radial protrusion 163 along an arc defining the end of the protrusion 163.

[0103] Therefore, the support step 164 is defined corresponding to the cross-section of the channel between the first longitudinal section 160 and the second longitudinal section 161.

[0104] The second pin 14 is formed by a shaped pin including a shank 14a, which engages at one end in a hole 15 obtained in the first rod 5, or, as shown, in a connecting rod 13, and the shank 14a widens at the opposite end to form a head 14b.

[0105] The head 14b has a shape that mimics the shape of the cross section of the hollow seat corresponding to the first longitudinal segment 160 of the hollow seat.

[0106] When the hinge system 1 is in the closed position of the movable blade 200 on the fixed frame 100, the head 14b is received with clearance in the second longitudinal section 161, aligned with the simulated cross section of the first longitudinal section 160, thereby realizing a cylindrical pair that allows the second pin 14 to slide relative to the hollow seat in the axial direction and to rotate relative to it.

[0107] When the hinge system 1 is in any open position of the movable blade 200 relative to the fixed frame 100, the head 14b at least partially overlaps with the support step 164, forming a constraint together with the support step 164 by means of obstruction. This constraint, in particular, eliminates relative axial sliding between the second pin 14 and the hollow seat in the separation direction of the second body 3 from the first rod 5 and / or from the connecting rod 13, thereby realizing a revolute joint in which only relative rotation is possible between the second pin 14 and the hollow seat.

[0108] Advantageously, a portion of the inner surface 165 of the hollow seat is expanded to allow the second body 3 to tilt relative to the first rod 5 and / or the connecting rod 13.

[0109] The expansion portion 165 is obtained at the lower end of the first longitudinal section 160 in a position diametrically opposite to the radial protrusion 163.

[0110] It should be noted that, as described above and as shown in the accompanying drawings, the connection between the second pin 14 and the hollow seat defined by the through opening 16 is particularly employed in the hinge system 1 that forms the lower hinge (that is, the hinge corresponding to the lower corner of the movable blade 200) that hinges the movable blade 200 to the fixed frame 100.

[0111] It should also be noted that, in addition to the method shown in the accompanying drawings for hinged to the first and second rods to the first and second bodies, this connection can also be used in concealed hinge systems.

[0112] The hinge system 1 is accomplished by components for fixing the first body 2 and the second body 3 to the peripheral channel 102 and the peripheral channel 202 respectively, and components for adjusting the position of the first body 2 and the second body 3 relative to the peripheral channel 102 and the peripheral channel 202. These components are known in themselves and therefore will not be described in detail.

[0113] The accompanying drawings illustrate, for example, a threaded flathead screw 30 and a cam 32, wherein the threaded flathead screw 30 is inserted into a corresponding threaded hole 31 with an inclined axis obtained in the first body 2 and is adapted to fix the first body 2 in the peripheral channel 102, and the cam 32 is adapted to eliminate any connection clearance between the first body 2 and the peripheral channel 102.

[0114] The second body 3 is fixed to the profile 201 by screws 33 and threaded components 34.

[0115] Based on the above description and accompanying drawings, those skilled in the art will immediately understand the operation of the hinge system according to the present invention.

[0116] The assembly of hinge system 1, particularly the assembly of hinge system 1 forming the lower hinge, is as follows:

[0117] - The assembly formed by the first main body 2 and the rod assembly 4 is anchored to the profile 101 of the fixed frame, thereby forming the lower transverse member of the fixed frame.

[0118] - Anchor the second main body 3 to the profile 201 of the movable blade fan, thereby forming the lower transverse component of the movable blade fan.

[0119] - By holding the hinge system 1, or more precisely the components of the hinge system 1 as described above, in the closed position, the movable blade 201 faces the opening defined by the fixed frame 100, thereby keeping the movable blade 201 tilted relative to the plane PA of the opening.

[0120] - The profile 201 anchored to the second body 3 is stacked on the profile 101 anchored to the hinge system assembly 1, so that the second pin 14 is fitted into the through opening 16 and the third pin 20 is fitted into the corresponding cylindrical seat 22.

[0121] - Remaining components with fixing devices for anchoring hardware, particularly the arms that hold the upper transverse members of the movable blade fan 200 to the fixed frame 100 (not described or depicted, as they are known to those skilled in the art).

[0122] Clearly, by holding the hinge system 1 in the closed position, the connection between the second pin 14 and the hollow seat defined by the through opening 16 (i.e., the cylindrical pair with radial clearance), together with the connection between the third pin 20 and the corresponding cylindrical seat 22, allows the movable blade 200 to tilt even when the movable blade 200 is mounted and anchored to the fixed frame 100, so that the movable blade 200 can be tilted open when needed.

[0123] In any case, once the movable fan blade 200 is opened (swing-open) by a rotational-translational movement achieved by the hinge system 1, the relative rotation of the second body 3 relative to the first rod 5 and / or the connecting rod 13 eliminates the possibility of relative sliding of the second pin 14 relative to the hollow seat defined by the through opening 16, thereby ensuring that the movable fan blade 200 is free from the risk of separation from the fixed frame 100. This elimination is made possible by a rotational coupling pair generated between the second pin 14 and the hollow seat defined by the through opening 16, following the constraint achieved by the obstruction created between the head 14b of the second pin 14 and the support step 164 of the hollow seat defined by the through opening 16.

[0124] The operation of hinge system 1 is clearly shown in the accompanying drawings.

[0125] For details, please refer to the following: Figures 9 to 14 It should be noted that during the opening of the movable blade fan 200 (oscillating), the first end 6a of the second rod 6 first performs a rotational motion relative to the pin 7. Figure 9-11 Then, a rotation-translation motion is performed, followed by a translation motion. The trajectory of the translation motion is tangent to or coincides with the straight line direction R, which lies on a horizontal plane and is incident on the plane PA of the opening. Figure 12-14 ).

[0126] Such movement of the second rod 6 allows the second body 3 and thus the movable blade 200 to move outward away from the opening defined by the fixed frame 100, thereby from an opening angle of 90° ( Figure 12 Start from 180° until the maximum opening angle is reached. Figure 14 This allows the opening to be completely free.

[0127] The second rod 6 allows the movable blade 200 to open while maintaining a distance D greater than a desired value between the movable blade 200 and the fixed frame 100, which is preferably equal to or greater than 1 cm.

[0128] This not only facilitates the assembly and disassembly of the movable blade fan 200, as well as its opening and closing operations, without posing a risk to the user, but also allows for an additional support system between the fixed frame 100 and the movable blade fan 200, which allows for an increase in the load-bearing capacity of the hinge system 1.

[0129] Figures 2 and 3A illustrate an additional support system comprising a tip 40 that engages with a support 41 fixed to the fixed frame 100 and with a similar support 42 fixed to the movable blade 200, and the tip 40 may be used up to an opening angle of 140° for the movable blade 200.

[0130] If it is necessary to limit the opening angle of the movable blade fan 200 to a value of less than 180°, for example due to the total space determined by the construction of the wall, it is sufficient to apply a limiter 26 of appropriate shape / size on the hinge system 1.

[0131] It should be noted that, for example, the hinge system (which allows a maximum opening angle of 180°) which is an object of the present invention helps door and window manufacturers to produce and assemble the fasteners, so that door and window manufacturers can simply limit the opening angle to a desired lower value (e.g., 90°, 110° or 140°) by applying the limiter 26 when needed.

[0132] In practice, it has been observed that the hinge system according to the invention enables the achievement of the intended purpose.

[0133] In fact, the hinge system according to the invention allows for a maximum opening angle of 180°, while the movable blades do not obstruct the opening defined by the fixed frame; when the hinge system is at its maximum opening (180°), and prior to this, the movable blades are located outside the gap defined by the fixed frame.

[0134] The hinge system according to the invention also allows for a maximum opening angle of 180°, while the movable blades do not approach the fixed frame when fully open, wherein the movable blades are kept at a desired distance D from the fixed frame, which in particular allows for the use of additional concealed safety systems.

[0135] The hinge system according to the invention also allows for adjustment of the maximum opening angle of the movable blade fan in a simple and quick manner and with complete safety.

[0136] The hinge system according to the invention also facilitates the assembly and disassembly of the movable blades while ensuring stable support for the movable blades in the open state, thereby ensuring that the movable blades are protected from the risk of separation.

[0137] The envisioned concealed hinge system is easily modified and varied, all of which fall within the scope of the inventive concept; furthermore, all details can be replaced with technically equivalent components. In fact, the materials used and their dimensions can be of any type, depending on the technical requirements.

Claims

1. A concealed hinge system (1) for a door or window, the door or window comprising a fixed frame (100) defining an opening and a movable slat (200) closing the opening, each of the fixed frame and the movable slat comprising a profile (101, 201) having at least one peripheral channel (102, 202), wherein the hinge system comprises: - First body (2), the first body (2) can be fixedly connected to the peripheral channel (102) of the profile (101) of the fixed frame (100); - Second body (3), the second body (3) can be fixedly connected to the peripheral channel (202) of the profile (201) of the movable blade (200); as well as - Rod assembly (4), which hinges the first body (2) and the second body (3) to each other; The rod assembly (4) includes: - A first rod (5) having a first end (5a) rotatably hinged to the first body (2) about a first rotation axis (A1) fixed relative to the first body (2), a second end (5b) rotatably hinged to the second body (3) about a second rotation axis (A2) parallel to the first rotation axis (A1) and fixed relative to the second body (3), and an intermediate portion (5c) between the first end (5a) and the second end (5b), wherein the second end (5b) of the first rod (5) is hinged to the second body (3) by a connecting rod (13), the opposite ends (13a, 13b) of the connecting rod (13) being respectively hinged to the second body (3) thereby defining the second rotation axis (A2), and the second end (5b) hinged to the first rod (5) thereby defining a sixth rotation axis (A6) parallel to the second rotation axis (A2); - Second rod (6), the second rod (6) has a first end (6a) hinged to the first body (2), a second end (6b) rotatably hinged to one end of the second body (3) about a third rotation axis (A3) parallel to the first rotation axis (A1), and an intermediate portion (6c) between the first end (6a) and the second end (6b). The first rod (5) and the second rod (6) are rotatably hinged to each other about a fourth rotation axis (A4) parallel to the first rotation axis (A1), corresponding to their middle portions (5c, 6c). Its features are, - The first end (6a) of the second rod (6) is hinged to the first body (2) via kinematic pairs (7, 8), which enable the first end (6a) of the second rod (6) to move relative to the first body (2) about a fifth rotation axis (A5) parallel to the first rotation axis (A1) and along a trajectory (T), the trajectory (T) extending toward the first rotation axis (A1), and for at least a portion thereof, the trajectory (T) is contained in at least one plane perpendicular to the first rotation axis (A1). A set of linear directions (R) are tangent to or coincident, wherein at least one linear direction (R) is incident relative to a plane (PA) defined by the opening, wherein the kinematic pair provides a pin (7) that defines the fifth axis of rotation (A5) and is fixed to the first body (2) at a distal portion relative to the first axis of rotation (A1), and is slidably inserted along a slot (8) realized in the first end (6a) of the second rod (6), the slot (8) being straight and extending along a longitudinal extension of the second rod (6). The hinge system (1) is adapted to allow the opening angle between the movable blade (200) and the fixed frame (100) to reach a maximum of 180°, and the movement of the second rod (6) causes the second body (3) to move outward away from the opening defined by the fixed frame (100), thereby making the opening completely free from the 90° opening angle up to the maximum 180° opening angle.

2. The hinge system (1) according to claim 1, characterized in that, The third rotation axis (A3) is fixed relative to the second body (3).

3. The hinge system (1) according to claim 1 or 2, characterized in that, The hinge system (1) includes a limiter (26) for the opening angle of the movable blade (200) relative to the fixed frame (100), wherein the limiter (26) includes a body capable of engaging the first end (6a) of the second rod (6) or the first body (2), and the body of the limiter is provided with a portion (27) capable of overlapping or inserting into the slot (8, 8') thereby reducing the effective length of the slot (8, 8') for sliding of the pin (7).

4. The hinge system (1) according to claim 3, characterized in that, The portion (27) of the body of the limiter (26) includes at least one shaped stop surface (28, 29) defining a boundary, and the corresponding portion of the pin (7) abuts against the shaped stop surface at the end of its sliding movement relative to the slot (8, 8').

5. The hinge system (1) according to claim 1, characterized in that, The second rotation axis (A2) is defined by a forming pin (14), which is fixed to the second end (5b) of the first rod (5) or to the end of a connecting rod (13) that hinges the second end (5b) of the first rod (5) to the second body (3), and the forming pin (14) is inserted into a hollow seat obtained in the second body (3), wherein, when the hinge system (1) is in the closed position of the movable blade (200) on the fixed frame (100), the forming pin (14) and the The connection between the hollow seats defines a cylindrical pair with radial clearance, the radial clearance being adapted to allow the second body (3) to tilt relative to the first rod (5) or the connecting rod (13), and wherein, after a rotational-translational movement of the movable blade (200) relative to the fixed frame (100) generated by the hinge system (1), when the hinge system (1) is in the open position of the movable blade (200) relative to the fixed frame (100), the connection between the forming pin (14) and the hollow seat defines a revolute pair.

6. The hinge system (1) according to claim 5, characterized in that, The connection forming the cylindrical pair is adapted to allow the forming pin (14) to slide relative to the hollow seat in a direction along which the second body (3) separates from the first rod (5) or the connecting rod (13), wherein the connection forming the rotary pair eliminates the relative axial sliding of the forming pin (14) relative to the hollow seat.

7. The hinge system (1) according to claim 5 or 6, characterized in that, The hollow seat includes a through opening (16) obtained in the second body (3).

8. The hinge system (1) according to claim 6 or 7, characterized in that, The hollow seat includes a first longitudinal section (160) and a second longitudinal section (161), wherein the cross section of the hollow seat corresponding to the first longitudinal section (160) includes a circular portion (162) extending into a radial protrusion (163) defined by an arc of a circumference concentric with it, and wherein the cross section of the hollow seat corresponding to the second longitudinal section (161) widens from the radial protrusion (163) along the arc of the circumference defining the radial protrusion (163) and widens for at least a portion of the circular portion (162) to define a support step (164).

9. The hinge system (1) according to claim 8, characterized in that, The forming pin (14) includes a handle (14a) which engages at one end in a corresponding hole (15) realized in the first rod (5) or the connecting rod (13), and the handle (14a) widens at the opposite end into a head (14b) whose shape mimics the cross-section of the first longitudinal section (160) of the hollow seat, wherein when the hinge system (1) is in the position of the movable blade (200) in the fixed When in the closed position on the frame (100), the head (14b) is inserted with clearance into the second longitudinal section (161) of the hollow seat and aligned with the simulated cross section (162, 163) of the first longitudinal section (160), and wherein, when the hinge system (1) is in the open position of the movable blade (200) relative to the fixed frame (100), the head (14b) partially overlaps the support step (164).

10. The hinge system (1) according to claim 9, characterized in that, A portion (165) of the inner surface of the hollow seat expands to allow for the tilt.

11. The hinge system (1) according to claim 10, characterized in that, The expanded portion (165) is obtained at the lower end of the first longitudinal section (160), in a position relative to the diameter of the radial protrusion (163).

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