Limiting device for the opening of a door or window

Abstract

A door or window opening restriction device is described, comprising: a guide body (5) associated with the peripheral contour of a movable fan blade (2) and equipped with a groove (6); an operating arm (7) hinged at a first end to a fixed frame (1) and a second end slidably connected within the groove (6) of the guide body (5) by means of a pin (8) to allow the pin (8) to slide along the guide groove (6) to limit the opening angle of the fan blade (2); the guide body (5) having two opposing transverse openings (9) formed on a wall portion for limiting the groove (6) to allow the fan blade (2) to be in a freely open configuration. The pin (8) of the arm (7) housed in the slot (6) is allowed to pass freely through one of the openings (9); a locking lever or latch (10) is hinged to the base (11) of the guide body (5) and is configured to lock the pin (8) of the arm (7) when it is positioned at the end of the slot (6) of the guide body (5) in the open configuration of the fan blade (2) at a restricted angle; an operating lever (12) is slidably inserted along the body (5) and has a pair of protruding walls (12a) configured to temporarily close the opening (9) of the slot (6) in use, at least when switching from the closed configuration to the open configuration of the fan blade (2) at a restricted angle.

Description

Technical Field

[0001] This invention relates to a device for limiting the opening of a door or window, particularly for doors or windows with a traditional fan-shaped latching mechanism. Background Technology

[0002] Among the various types of doors and windows available on the market (made of metal, PVC, etc.), one type is a door or window with a traditional fan-shaped opening method (facing the inside or outside of the room where it is installed). It can have two different fan-shaped opening structures, one with a free opening angle and the other with a limited opening angle and locked in the open position.

[0003] This type of door or window has the following characteristics:

[0004] -Fixed frame;

[0005] - A movable frame or fan blade, which is equipped on one side with a hinge for its movement between a closed configuration that is in stable contact with a fixed frame and an open configuration that allows the fan blade to move away from the fixed frame.

[0006] - Control handle associated with the fan blades;

[0007] - An operating device, which is mounted on the fan blade, connected to a handle, and configured to move the fan blade's closing / opening mechanism together with a locking pin element positioned on a fixed frame under the action of the handle.

[0008] The operating device typically includes a drive rod that is slidably positioned in a channel formed on the peripheral profile of the frame and associated with a pin and / or boss.

[0009] The movement of the lever allows the pin and / or boss to be moved to contact or away from the locking pin element, thereby enabling the closing or opening mechanism of the active fan blade.

[0010] In this basic construction, the door or window according to the invention includes a selection device that can add an opening structure that limits the opening angle of the fan blades as well as the conventional opening degree of the fan blades.

[0011] EP3702562 and EP3363976 disclose a simplified type of prior art selection device, which includes:

[0012] - A guide body that is associated with the contour of the active fan blades (preferably on the upper crossbeam) and is equipped with a closed slot.

[0013] - An operating arm, which is hinged at a first end to the upper crossbeam of a fixed frame, while the other end of the arm is slidably restricted within a groove of a guide body by a pin to allow the pin to slide along the groove.

[0014] When the pin of the arm is inserted into the slot, the user pushes or pulls the fan blades after rotating the handle while opening the fan blades, causing the pin of the arm to slide along the slot of the guide body from one end to the other until it contacts the elastically conforming contour of the end of the slot, thereby locking and securing the opening of the fan blades in a stable and fixed intermediate position (typically an opening angle of about 45°).

[0015] To return the fan blade to the closed position, the user pushes or pulls the fan blade to separate the pin from the shaped profile, allowing it to slide freely along the groove as the fan blade rotates toward its closed position.

[0016] The aforementioned prior art devices have several drawbacks.

[0017] When the pin is engaged in the slot, the slot with its closed perimeter on the guide body does not allow the fan blades to open freely. To allow the fan blades to open freely, the user must physically remove the pin from the slot.

[0018] Therefore, this structure of the device does not allow for the automatic selection of the two possible opening configurations of the fan blades.

[0019] Furthermore, the interference resistance of the pin in the elastically conforming profile reduces reliability over time due to wear of the profile. Summary of the Invention

[0020] The purpose of this invention is to provide a device for limiting the opening degree of a door or window, which overcomes the aforementioned shortcomings of the prior art.

[0021] In particular, the purpose of this invention is to provide a door or window opening restriction device that can automatically achieve both a free-opening structure and a restricted-opening structure of the fan blades by operating a handle.

[0022] Another object of the present invention is to provide a limiting device for the opening of doors and windows that can maintain a high level of precision when positioning the fan blades in a restricted opening configuration, and maintain a high level of safety while maintaining the restricted opening configuration.

[0023] The above objective is fully achieved by a door or window opening restriction device according to the invention. Attached Figure Description

[0024] The main features of the invention will become clearer from the following detailed description of preferred, and not limiting, embodiments shown by way of example only in the accompanying drawings, in which:

[0025] - Figure 1 and Figure 2 These are schematic top views of a door or window equipped with an opening limiting device according to the invention, in both a closed configuration and an open configuration at a limited angle.

[0026] - Figures 3 to 7 These are all corresponding side sectional views, showing the limiting devices for the opening of doors or windows in five different operating configurations;

[0027] - Figures 8 to 12 It shows the position Figures 3 to 7 Three-dimensional diagrams of the limiting devices for the opening of doors or windows in five different operating configurations;

[0028] - Figure 13 and Figure 14 These are perspective views of the opening limiting device, particularly the operating lever and latch in two different operating positions, with some parts cut off to better show the others. Detailed Implementation

[0029] Refer to the attached drawings, especially Figure 1 and Figure 2 A door or window opening restriction device marked as 100 is applied to doors or windows that open toward the interior or exterior of the room in which they are installed.

[0030] The door or window includes: a fixed frame 1; and a movable frame or sash 2, which is typically connected to the fixed frame by two or more hinges on a post (not shown) to allow the sash 2 to be opened and closed by rotation.

[0031] The door or window also includes a control handle 3 associated with the fan blade 2.

[0032] The handle 3 is connected to the locking / unlocking device 4 of the fan blade 2, which is slidably positioned along the peripheral contour of the fan blade 2, so as to realize at least one closing configuration and a free opening configuration of the fan blade 2 by rotating the handle 3.

[0033] The locking / unlocking device 4 includes a drive lever (shown by dashed lines) that is slidably positioned in a channel formed on the peripheral profile of the movable fan blade and associated with a pin and / or a boss.

[0034] The movement of the rod allows the pin and / or boss to be moved to contact or move away from the locking pin element located on the fixed frame, thereby enabling the closing or opening configuration of the movable fan blade.

[0035] The limiting device 100 includes a guide body 5, which is associated with the peripheral contour of the movable fan blade 2 and is equipped with a groove 6 (located at the closed end).

[0036] The limiting device 100 also includes an operating arm 7, which is hinged at a first end to a fixed frame 1 and has a second end that can be slidably connected to a groove 6 in a guide body 5 via a pin 8, thereby allowing the pin 8 to slide along the guide groove 6, thus limiting the opening angle of the fan blade 2 (see...). Figure 2 ).

[0037] As shown in the figure (see also: Figures 3 to 12 The limiting device 100 includes a guide body 5 having two opposing transverse openings 9 formed on the wall of the limiting groove 6 to allow the pin 8 of the arm 7 housed in the groove 6 to pass freely through at least one of the openings 9 when the fan blade 2 is in a free-open configuration.

[0038] Furthermore, the limiting device 100 includes a locking lever or latch 10, which is hinged to the base 11 of the guide body 5 and is available in a first lowered non-operating position. Figure 4 , Figure 5 , Figure 7 and Figure 13 ) and second lifting operation position ( Figure 3 , Figure 6 , Figure 11 and Figure 14 The blade 2 moves between the two sides to lock the pin 8 of the arm 7 at the end of the groove 6 of the guide body 5 in the open configuration with the blade 2 at a limited angle.

[0039] The limiting device 100 also includes an operating lever 12, which is slidably inserted along the guide body 5 and whose end located outside the guide body 5 is configured to connect with the locking / unlocking device 4 of the movable fan blade 2 in use.

[0040] The operating lever 12 has a pair of protruding wall portions 12a, which are configured to temporarily close the opening 9 of the slot 6 during use, at least when switching from the closed configuration to the open configuration at a limited angle of the fan blade 2.

[0041] Because of this structure, the fan blades can be opened quickly and precisely in two configurations via the handle, and the components of the device that are always positioned on the fan blades can be opened freely when necessary (as will be described in more detail below due to the opening in the slot), and the fan blades are always stably locked in (and out of) the open position with a limited angle under the direct control of the handle due to the latch controlled by the lever.

[0042] Therefore, the outer end of the operating lever 12 is connected to the moving lever connected to the handle 3 by a pin, so that they can slide in two directions and achieve different configurations as required.

[0043] Preferably, the operating lever 12 has a portion with a slotted opening 13 located inside the guide body 5 (see also...). Figures 9 to 14 The latch 10 is configured to intercept the cam profile formed on the latch 10 during its sliding and under the action of the handle 3, thereby allowing the latch 10 to be guided from the lowered non-operating position to the raised operating position, at least in the open position of the fan blade 2 with a limited angle.

[0044] The limiting device 100 includes an elastic element 15, which is inserted between the base 11 of the guide body 5 and the latch 10 and is capable of holding the latch 10 in the direction of being pushed in the raised operating position.

[0045] The elastic element 15 may be a spring inserted between a latch 10 having a suitable bearing 10a and a base 11 having a pin, the spring being mounted on the pin.

[0046] It should be noted that the operating lever 12 has a central portion 16 that is raised relative to its end, so that the sliding plane of the pin 8 of the arm 7 inserted into the groove 6 of the guide body 5 without friction and capable of sliding is between the bearing 17 formed in the guide body 5 for receiving the latch 10.

[0047] Preferably (see) Figure 13 and Figure 14 The operating lever 12 has the aforementioned slotted opening 13 divided into two consecutive segments 13a and 13b, wherein the width L13a of the first segment 13a is less than the width L10 of the latch 10 to contact the guide cam profile of the latch 10, and the width L13b of the second segment 13b is greater than the width of the latch 10 to allow a portion of the latch 10 to reach a raised operating position beyond the operating lever 12.

[0048] It should be noted that the operating lever 12 has two wall portions 12a that protrude laterally from the raised central portion 16 for closing the opening 9 of the slot 6, thereby being positioned parallel to the opening 9 of the slot to close it when needed.

[0049] Preferably, the latch 10 includes a head end 18 with a wedge-shaped profile, which is configured to contact the pin 8 in use in the open position of the fan blade 2 with a restricted angle.

[0050] Therefore, the profile of the head end 18 has two surfaces, which have a central vertex that serves as a contact point for the pin 8 during the locking of the pin. The surfaces of the head end are designed to allow both raising when there is no direct connection between the head end and the pin, and lowering when there is no locking between the head end and the pin.

[0051] The latch 10 has two lateral wings 14 with corresponding surfaces that extend obliquely toward the base 11 of the guide body 5 for contacting the operating lever 12, thereby defining a guide cam profile for the latch 10 when it moves from the non-operating position to the operating position or vice versa.

[0052] In other words, the latch 10 always has a guided movement controlled by the sliding of the operating lever 12.

[0053] It should be noted that the guide body 5 has a bearing 17 for receiving the latch 10, which is equipped with a pin 19 for hinged latch 10 to allow the latch to rotate from the non-operating position to the operating position or vice versa.

[0054] It should be noted that the operating lever 12 is connected to the control handle 3 via the locking / unlocking device 4 to slide in a rotational engagement with the handle 3, thereby achieving at least an open position with a limited angle based on the following positions:

[0055] - The closed position (position 0°) of the fan blade 2 corresponding to the first position of the handle 3, wherein the operating lever 12 is in the first position of the opening 9 of the groove 6 of the guide body 5 away from the wall 12a and the latch 10 is in the raised operating position ( Figure 3 and Figure 8 );

[0056] - The handle 3 is rotated to the open position (position 90°) of the fan blade 2 with a limited angle, wherein the operating lever 12 is in the second position in which the wall 12a is in the closed position of the opening 9 of the groove 6 of the guide body 5 and the latch 10 is in the lowered non-operating position to allow the pin 8 of the arm 7 to slide along the groove 6 to achieve the opening of the fan blade 2 with a limited angle. Figure 4 , Figure 5 , Figure 9 and Figure 10 );

[0057] - The handle 3 rotates back to the closed position of the fan blade 2, wherein the operating lever 12 returns to the first position of the wall 12a away from the opening 9 of the slot 6 of the guide body 5 and the latch 10 is in the raised operating position to lock the pin 8 of the arm 7 in the reached position. Figure 6 and Figure 11 );

[0058] - The handle 3 is further rotated to the open position of the fan blade 2 with a limited angle, wherein the operating lever 12 returns to the second position of the wall 12a closing the opening 9 of the slot 6 of the guide body 5 and the latch 10 is in the lowered non-operating position to allow the pin 8 of the arm 7 to slide along the slot 6, thereby allowing the fan blade 2 to return to the closed position.

[0059] In addition to these positions, the operating lever 12 also slides by controlling the rotation of the handle 3, thereby achieving a free-opening position of the fan blades between the following positions:

[0060] - The closed position of the fan blade 2 corresponding to the first position of the handle 3, wherein the operating lever 12 is in the first position away from the opening 9 of the groove 6 of the guide body 5 in the wall (12a) and the latch 10 is in the raised operating position;

[0061] - A second rotation of the handle 3, at an angle different from its first rotation (position 180°), in which the operating lever 12 is in a third position away from the opening 9 of the slot 6 of the guide body 5 in the wall 12a and the latch 10 is in a lowered non-operating position, so that the fan blade 2 rotates while keeping the arm 7 and pin 8 stationary within the fixed frame 1. Figure 7 and Figure 12 ).

[0062] In the latter configuration, the wall portions 12a move in the opposite direction to the positions they occupy in the closed position of the rod.

[0063] Therefore, the opening area of ​​the slot ensures that the fan blades open (and close) without interacting with the pins (along with the rod) that remain parallel to the profile of the crossbeam of the fixed frame.

[0064] The device constructed in this way achieves the intended purpose.

[0065] The combination of a slotted rod, a vertical wall, and a latch enables operational precision and safety in a variety of desired positions.

[0066] The opening in the slot of the guide body allows the conventional opening of the fan blades to be achieved without interfering with the already installed components.

[0067] The rod, with its bidirectional structure passing through the main body and connected to the locking / unlocking device, allows all operational connections to be maintained along the contour without requiring modification of the locking / unlocking structure of the door or window (regardless of the device's location).

Claims

1. Limitation device of the opening of a door or window, comprising a fixed frame (1), a movable frame or leaf (2), a control handle (3) associated with said leaf (2), connected with locking / unlocking means (4) of said leaf (2) slidingly positioned along the peripheral profile of said leaf (2) to achieve at least a closed configuration of said leaf (2) and a free opening configuration of said leaf (2) by rotating said control handle (3), said limitation device comprising: - a guide body (5) associated with the peripheral profile of the movable leaf (2) and having a slot (6); - an operating arm (7) hinged at a first end to said fixed frame (1) and having a second end slidingly connectable inside said slot (6) of said guide body (5) by means of a pin (8) to achieve a sliding stroke of said pin (8) along said slot (6) for guiding to define a limited angular opening configuration of said leaf (2), characterized in that said limitation device comprises: - said guide body (5) provided with two transversal openings (9) facing each other formed on the wall for defining said slot (6) to allow the passage of said pin (8) of said operating arm (7) housed in said slot (6) at least freely through one of said openings (9) when said leaf (2) is in said free opening configuration; - a locking lever or latch (10) hinged to a base (11) of said guide body (5) and movable between a first lowered non-operating position and a second raised operating position for locking said pin (8) of said operating arm (7) when it is positioned at the end of said slot (6) of said guide body (5) in said limited angular opening configuration of said leaf (2); - an operating rod (12) slidingly inserted along said guide body (5) and having an end portion outside said guide body (5) configured to be connected in use with said locking / unlocking means (4) of the movable leaf (2), said operating rod (12) having a pair of projecting wall portions (12a) configured to temporarily close said openings (9) of said slot (6) in use at least when passing from said closed configuration to said limited angular opening configuration of said leaf (2).

2. Limiting device according to claim 1, characterized in that Said operating rod (12) has a relative portion inside said guide body (5) provided with a slot-shaped opening (13) configured to intercept a cam profile formed on said latch (10) during its sliding and under the action of said control handle (3) to allow at least in said limited angular opening configuration of said leaf (2) the passage of said latch (10) from said lowered non-operating position to said raised operating position.

3. Limiting device according to claim 1 or 2, characterized in that It comprises a resilient element (15) interposed between said base (11) of said guide body (5) and said latch (10) and capable of keeping said latch (10) pushed in the direction of said raised operating position.

4. Limiting device according to claim 1 or 2, characterized in that The operating lever (12) has a central portion (16) raised with respect to its end portions, so as to be inserted, without friction and in a sliding manner, between the sliding plane of the pin (8) of the operating arm (7) in the slot (6) of the guide body (5) and a seat (17) in the guide body (5) for receiving the latch (10).

5. The restriction device according to claim 1 or 2, characterized in that The latch (10) comprises a head end portion (18) having a wedge-shaped profile configured, in use, to come into contact with the pin (8) in the open configuration of the limited angle of the leaf (2).

6. The restriction device of claim 2, wherein The latch (10) has two lateral wings (14) having corresponding surfaces extending obliquely towards the base (11) of the guide body (5) for coming into contact with the operating lever (12) to define a guide cam profile for the latch (10) when moving from the lowered non-operating position to the raised operating position or vice versa.

7. Limiting device according to claim 6, characterized in that The slot-shaped opening (13) of the operating lever (12) is divided into two consecutive segments (13a, 13b), wherein the first segment (13a) has a width (L13a) smaller than the width (L10) of the latch (10) to come into contact with the guide cam profile of the latch (10) and the second segment (13b) has a width (L13b) greater than the width of the latch (10) to allow a portion of the latch (10) to reach the raised operating position outside the operating lever (12).

8. The restriction device of claim 1 or 2, wherein The guide body (5) has a seat (17) for housing the latch (10) equipped with a pin (19) for articulating the latch (10) to allow it to rotate from the lowered non-operating position to the raised operating position or vice versa.

9. The restriction device of claim 4, wherein The operating lever (12) has two wall portions (12a) protruding laterally from the raised central portion (16) for closing the opening (9) of the slot (6), so as to be positioned, when required, parallel to the opening (9) of the slot to close it.

10. The restriction device of claim 1 or 2, wherein The operating lever (12) is connected to the control handle (3) by the locking / unlocking device (4) to slide in cooperation with the rotation of the control handle (3) to achieve at least the open configuration of the limited angle of the leaf (2) according to the positions between: - a closed position of the leaf (2) corresponding to a first position of the control handle (3), in which the operating lever (12) is in a first position of the wall portions (12a) away from the opening (9) of the slot (6) of the guide body (5) and the latch (10) is in the raised operating position; - an open position of the leaf (2) corresponding to a second position of the control handle (3), in which the operating lever (12) is in a second position of the wall portions (12a) parallel to the opening (9) of the slot (6) of the guide body (5) and the latch (10) is in the lowered non-operating position. - said control handle (3) is rotated to said limited angle opening configuration of said leaf (2), wherein said operating lever (12) is in a second position in which said wall portion (12a) is in a closed position of said opening (9) of said slot (6) of said guide body (5) and said latch (10) is in said lowered non-operating position, to allow the sliding of said pin (8) of said operating arm (7) along said slot (6) to achieve a limited angle opening of said leaf (2); - said control handle (3) is rotated back to a closed position of said leaf (2), wherein said operating lever (12) is returned to said first position in which said wall portion (12a) is distanced from said opening (9) of said slot (6) of said guide body (5) and said latch (10) is in said raised operating position, to lock said pin (8) of said operating arm (7) in the reached position; - said control handle (3) is further rotated to said limited angle opening configuration of said leaf (2), wherein said operating lever (12) is returned to said second position in which said wall portion (12a) closes said opening (9) of said slot (6) of said guide body (5) and said latch (10) is in said lowered non-operating position, to allow the sliding of said pin (8) of said operating arm (7) in the opposite direction along said slot (6), allowing said leaf (2) to return to a closed position.

11. Limiting device according to claim 10, characterized in that Said operating lever (12) is connected with said control handle (3) by said locking / unlocking device (4) to slide in cooperation with the rotation of said control handle (3), to achieve said free opening configuration of said leaf (2) between: - a closed position of said leaf (2) corresponding to said first position of said control handle (3), wherein said operating lever (12) is in said first position in which said wall portion (12a) is distanced from said opening (9) of said slot (6) of said guide body (5) and said latch (10) is in said raised operating position; - a second rotation of said control handle (3) different from the angle of the first rotation thereof, wherein said operating lever (12) is in a third position in which said wall portion (12a) is distanced from said opening (9) of said slot (6) of said guide body (5) and said latch (10) is in said lowered non-operating position, to allow the rotation of said leaf (2) while keeping said operating arm (7) and said pin (8) stationary within said fixed frame (1).

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