Folding window

Abstract

The invention provides a folding window which comprises an outer frame, a first opening sash, a second opening sash and a synchronizing mechanism, the first opening sash and the second opening sash are sequentially arranged in the outer frame in the width direction of the outer frame, and the first opening sash and the second opening sash are movably arranged relative to the outer frame; the first opening sash is hinged to the second opening sash; at least part of the synchronizing mechanism is movably arranged on the top of the outer frame, the side, away from the second opening sash, of the first opening sash and the side, away from the first opening sash, of the second opening sash are connected with the synchronizing mechanism, and the synchronizing mechanism moves to drive the first opening sash and the second opening sash to be synchronously and oppositely folded or unfolded. According to the folding window, the technical problem that in the folding window opening and closing process in the prior art, due to the fact that opening sashes on the two sides do not move synchronously, the window body structure is unstable is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of door and window structure technology, specifically to a folding window. Background Technology

[0002] Windows, as an important component of building structures, not only serve the functions of introducing natural light and maintaining indoor ventilation, but also have a direct impact on the aesthetic appearance of buildings. With the continuous improvement of building technology and people's living standards, people's requirements for windows are also increasing, especially in terms of aesthetics, functionality, and ease of use. Among them, folding windows (also known as fully opening windows) are widely favored due to their ability to open wide, providing excellent ventilation performance and unique design aesthetics.

[0003] Despite the significant advantages of folding windows in improving the quality of the living environment and space utilization, existing folding window products still face several technical challenges in practical applications: 1. Uneven glass surface when closed: When the existing folding window is fully closed, the glass surface is uneven due to insufficient design of the connection method or support structure between the sashes, which affects the appearance and may reduce the sealing performance.

[0004] 2. Structural stability issues caused by inconsistent angles on both sides during opening: When the user operates the folding window to open or close, the angles of the two opening sashes are difficult to synchronize precisely, which can easily cause instability in the entire window structure and may even lead to accelerated wear of mechanical parts and shorten service life.

[0005] Therefore, existing technologies still need further development. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a folding window to solve the technical problem of unstable window structure in the prior art due to asynchronous movement of the two opening sashes during the opening and closing process.

[0007] To achieve the above-mentioned technical objectives, according to one aspect of the present invention, a folding window is provided, comprising: an outer frame, a first opening sash, a second opening sash, and a synchronization mechanism. The first and second opening sashes are sequentially disposed within the outer frame along the width direction of the outer frame, and are movably disposed relative to the outer frame. The first and second opening sashes are hinged together. At least a portion of the synchronization mechanism is movably disposed on the top of the outer frame. The side of the first opening sash away from the second opening sash and the side of the second opening sash away from the first opening sash are respectively connected to the synchronization mechanism, so that the movement of the synchronization mechanism drives the first and second opening sashes to fold or unfold synchronously relative to each other.

[0008] Furthermore, the folding window also includes: a first moving mechanism, wherein a first connecting part of the first moving mechanism is fixedly connected to the transmission output part of the synchronization mechanism to drive the first moving mechanism to move along the width direction of the outer frame through the synchronization mechanism; a second connecting part of the first moving mechanism is rotatably connected to the side of the first opening sash away from the second opening sash; a second moving mechanism, wherein a third connecting part of the second moving mechanism is fixedly connected to the transmission output part of the synchronization mechanism to drive the second moving mechanism to move along the width direction of the outer frame through the synchronization mechanism; and a fourth connecting part of the second moving mechanism is rotatably connected to the side of the second opening sash away from the first opening sash; wherein the synchronization mechanism drives the first and second moving mechanisms to move closer or further away from each other synchronously, thereby driving the first and second opening sashes to fold or unfold relative to each other; and when the first and second opening sashes are folded or unfolded relative to each other, the first opening sash rotates relative to the first moving mechanism, and the second opening sash rotates relative to the second moving mechanism.

[0009] Further, the synchronization mechanism includes: a first support frame and a second support frame, which are spaced apart at the top of the outer frame along the width direction; a first rotating wheel and a second rotating wheel, which are rotatably mounted on the first support frame and the second support frame, respectively, and the axes of the first rotating wheel and the second rotating wheel both extend along the height direction of the outer frame; a transmission belt, which is sleeved on the first rotating wheel and the second rotating wheel, so that the rotation of the first rotating wheel or the second rotating wheel drives the transmission belt to move; the transmission belt forms the transmission output part of the synchronization mechanism; wherein, the transmission belt has a first straight segment and a second straight segment, which are arranged parallel to each other; the first connecting part of the first moving mechanism is fixed on the first straight segment, and the third connecting part of the second moving mechanism is fixed on the second straight segment.

[0010] Furthermore, the outer frame has a receiving space for accommodating the first and second opening fans, and a mounting cavity communicating with the receiving space. The mounting cavity is located above the receiving space, and the transmission output of the synchronization mechanism is located in the top region of the receiving space. The first moving mechanism includes: a first moving assembly, which is movably disposed in the mounting cavity along the width direction of the outer frame, and is connected to the transmission output of the synchronization mechanism; a first hinge outer leaf, disposed at the bottom of the first moving assembly; the first hinge outer leaf forming a second connecting portion of the first moving mechanism; and a first hinge inner leaf, one side of which is rotatably connected to one side of which is connected to the first hinge outer leaf, and the side of the first hinge inner leaf away from the first hinge outer leaf is fixedly connected to the side of the first opening fan away from the second opening fan.

[0011] Furthermore, the mounting cavity has two inner sidewalls that are opposite each other along the thickness direction of the outer frame, each having a first guide groove extending along the width direction of the outer frame; the first moving assembly includes: a first moving seat located inside the mounting cavity, the first moving seat being connected to the transmission output part of the synchronization mechanism via a first connector, the first moving seat being located above the first connector; a first hinge outer leaf being mounted on the bottom of the first moving seat, and the first connector and the first hinge outer leaf being spaced apart along the width direction of the outer frame; at least one pair of first load-bearing wheels, the pair of first load-bearing wheels being rotatably mounted on opposite sides of the first moving seat, and the pair of first load-bearing wheels being rollably embedded in the two first guide grooves along the extension direction of the first guide groove, so that when the synchronization mechanism drives the first moving seat to move along the width direction of the outer frame, each first load-bearing wheel rolls along the extension direction of the first guide groove.

[0012] Furthermore, a second guide groove extending along the width direction of the outer frame is provided on the top wall of the mounting cavity; the first moving component also includes: at least one first guide wheel, the first guide wheel is rotatably disposed on the top of the first moving seat, the first guide wheel protrudes from the first moving seat, and the axis of the first guide wheel extends along the height direction of the outer frame; the first guide wheel is rotatably embedded in the second guide groove.

[0013] Furthermore, the first moving mechanism also includes: at least one second guide wheel, which is rotatably disposed on the top of the outer leaf of the first hinge, protruding from the outer leaf of the first hinge, and the axis of the second guide wheel extends along the height direction of the outer frame; the second guide wheel rolls in contact with the side wall of the outer frame so that when the synchronization mechanism drives the first moving seat to move along the width direction of the outer frame, the second guide wheel rolls relative to the side wall of the outer frame along the width direction of the outer frame.

[0014] Furthermore, the outer frame has a receiving space for accommodating the first and second opening sashes, and an anti-detachment guide groove communicating with the receiving space. The anti-detachment guide groove extends along the width direction of the outer frame and is located below the receiving space. The folding window also includes: a first anti-detachment mechanism, the anti-detachment part of which is movably disposed within the anti-detachment guide groove along the extension direction of the anti-detachment guide groove; the first anti-detachment mechanism is rotatably connected to the side of the first opening sash away from the second opening sash; a second anti-detachment mechanism, the anti-detachment part of which is movably disposed within the anti-detachment guide groove along the extension direction of the anti-detachment guide groove; the second anti-detachment mechanism is rotatably connected to the side of the second opening sash away from the first opening sash.

[0015] Further, the first anti-detachment mechanism includes: a first mounting base; at least one first anti-detachment guide wheel, the first anti-detachment guide wheel being rotatably disposed at the bottom of the first mounting base, the axis of the first anti-detachment guide wheel extending along the height direction of the outer frame, the first anti-detachment guide wheel being rotatably embedded in the anti-detachment guide groove along the anti-detachment guide groove; a second hinge outer leaf, mounted on the top of the first mounting base, and the second hinge outer leaf protruding from the first mounting base; a second hinge inner leaf, one side of the second hinge inner leaf being rotatably connected to one side of the second hinge outer leaf, and the side of the second hinge inner leaf away from the second hinge outer leaf being fixedly connected to the side of the first opening fan away from the second opening fan.

[0016] Furthermore, the folding window also includes: a first support mechanism and a second support mechanism. The first support mechanism is telescopically arranged along a first preset direction, with its first connecting end rotatably disposed on the outer frame and its first free end rotatably disposed on the top of the first opening sash. The second support mechanism is telescopically arranged along a second preset direction, with its second connecting end rotatably disposed on the outer frame and its second free end rotatably disposed on the top of the second opening sash. When the first and second opening sashes are folded or unfolded relative to each other, both the first and second support mechanisms rotate relative to the outer frame, and the first and second support mechanisms extend or retract synchronously.

[0017] Beneficial effects: The folding window provided by this invention, using the technical solution of the present invention, includes: an outer frame, a first opening sash, a second opening sash, and a synchronization mechanism. The outer frame serves as a support frame and is installed at a preset position. The first and second opening sashes are sequentially arranged within the outer frame along its width direction, and are movably arranged relative to the outer frame. The first and second opening sashes are hinged to each other; specifically, the side of the first opening sash closest to the second opening sash is connected to the side of the second opening sash closest to the first opening sash via a hinge structure. At least a portion of the synchronization mechanism is movably disposed on the top of the outer frame, and the side of the first opening sash furthest from the second opening sash and the side of the second opening sash furthest from the first opening sash are respectively connected to the synchronization mechanism. When the synchronization mechanism moves, it causes the side of the first opening sash furthest from the second opening sash to move closer to or further away from the side of the second opening sash furthest from the first opening sash, thereby driving the first and second opening sashes to fold or unfold synchronously relative to each other, realizing the opening or closing of the window. When the window is closed, the first and second opening sashes are in an unfolded state, coplanar and located within the outer frame; when the window is open, the first and second opening sashes fold relative to each other. Therefore, this invention, by hinged together the first and second opening sashes and connecting them respectively to a synchronization mechanism, enables the first and second opening sashes to move synchronously during opening and closing. When at least a portion of the synchronization mechanism moves at the top of the outer frame, it simultaneously drives the side of the first opening sash away from the second opening sash and the side of the second opening sash away from the first opening sash to move closer or further apart, thereby driving the first and second opening sashes to fold or unfold in a coordinated manner, effectively avoiding problems such as jamming, skewing, or operational difficulties caused by the failure of linkage between multiple windows. Since the first and second opening sashes are sequentially arranged within the outer frame along its width and are movably positioned relative to the outer frame, and are connected by hinges, combined with the linkage control of the synchronization mechanism, the entire folding action is more stable and reliable. Users only need to operate the synchronization mechanism to open or close the entire window, simplifying the operation process and reducing structural stress concentration and component wear caused by asynchronous movement, thus improving the overall reliability and service life of the folding window. This folding window effectively solves the technical problem of unstable window structure caused by asynchronous movement of the two opening sashes during the opening and closing process in existing folding windows. Attached Figure Description

[0018] Figure 1 A first-view schematic diagram of a folding window provided according to the present invention is shown; Figure 2 A second-view schematic diagram of a folding window provided according to the present invention is shown; Figure 3 A third-view schematic diagram of a folding window provided according to the present invention is shown; Figure 4A fourth-view schematic diagram of a folding window provided according to the present invention is shown; Figure 5 A schematic diagram showing the connection of the synchronization mechanism, the first moving mechanism, and the second moving mechanism in a folding window provided according to the present invention is shown. Figure 6 A schematic diagram of the structure of the first moving mechanism in the folding window provided according to the present invention is shown; Figure 7 A schematic diagram of the structure of the second moving mechanism in the folding window provided according to the present invention is shown; Figure 8 A schematic diagram of the structure of the first anti-slip mechanism in a folding window provided according to the present invention is shown; Figure 9 A schematic diagram of the structure of the second anti-slip mechanism in a folding window provided according to the present invention is shown; Figure 10 A schematic diagram of the structure of the outer frame in a folding window provided according to the present invention is shown.

[0019] The above figures include the following reference numerals: 1. Outer frame; 10. Accommodation space; 11. Mounting cavity; 12. First guide groove; 13. Second guide groove; 14. Anti-detachment guide groove; 15. Top frame; 16. Left frame; 17. Bottom frame; 18. Right frame; 19. Middle frame; 2. First opening fan; 3. Second opening fan; 4. Synchronization mechanism; 41. First support frame; 42. Second support frame; 43. First rotating wheel; 44. Second rotating wheel; 45. Transmission belt; 451. First straight section; 452. Second straight section; 5. First moving mechanism; 51. First moving component; 511. First moving seat; 512. First load-bearing wheel; 513. First guide wheel; 52. First hinge outer leaf; 53. First hinge inner leaf; 54. Second guide wheel; 56. First mounting plate; 57. First clamping plate; 6. Second moving mechanism; 6 1. Second moving component; 611. Second moving seat; 612. Second load-bearing roller; 613. Third guide roller; 62. Third hinge outer leaf; 63. Third hinge inner leaf; 64. Fourth guide roller; 66. Second mounting plate; 67. Second clamping plate; 7. First anti-detachment mechanism; 71. First mounting seat; 72. First anti-detachment guide roller; 73. Second hinge outer leaf; 74. Second hinge inner leaf; 75. Third hinge shaft; 76. Fifth guide roller; 8. Second anti-detachment mechanism; 81. Second mounting seat; 82. Second anti-detachment guide roller; 83. Fourth hinge outer leaf; 84. Fourth hinge inner leaf; 85. Fourth hinge shaft; 86. Sixth guide roller; 9. First support mechanism; 21. Folding hinge; 100. Second support mechanism; 200. Third support mechanism; 300. Fourth support mechanism. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] Please see Figures 1 to 10 According to an embodiment of the present invention, a folding window is provided, comprising: an outer frame 1, a first opening sash 2, a second opening sash 3, and a synchronization mechanism 4. The first opening sash 2 and the second opening sash 3 are sequentially disposed within the outer frame 1 along the width direction of the outer frame 1, and the first opening sash 2 and the second opening sash 3 are movably disposed relative to the outer frame 1. The first opening sash 2 and the second opening sash 3 are hinged together. At least a portion of the synchronization mechanism 4 is movably disposed on the top of the outer frame 1. The side of the first opening sash 2 away from the second opening sash 3 and the side of the second opening sash 3 away from the first opening sash 2 are respectively connected to the synchronization mechanism 4, so that the first opening sash 2 and the second opening sash 3 can be synchronously folded or unfolded relative to each other by the movement of the synchronization mechanism 4.

[0022] As can be seen, the folding window provided by the present invention includes: an outer frame 1, a first opening sash 2, a second opening sash 3, and a synchronization mechanism 4. The outer frame 1 serves as a support frame and is installed in a preset position. The first opening sash 2 and the second opening sash 3 are sequentially arranged within the outer frame 1 along its width direction, and are movably arranged relative to the outer frame 1. The first opening sash 2 and the second opening sash 3 are hinged to each other. Specifically, the side of the first opening sash 2 closest to the second opening sash 3 and the side of the second opening sash 3 closest to the first opening sash 2 are connected by a hinge structure. At least a portion of the synchronization mechanism 4 is movably arranged on the top of the outer frame 1. The side of the first opening sash 2 away from the second opening sash 3 and the side of the second opening sash 3 away from the first opening sash 2 are respectively connected to the synchronization mechanism 4. When the synchronization mechanism 4 moves, it causes the side of the first opening sash 2 away from the second opening sash 3 and the side of the second opening sash 3 away from the first opening sash 2 to move closer or further apart, thereby driving the first opening sash 2 and the second opening sash 3 to fold or unfold synchronously relative to each other, realizing the opening or closing of the window. When the window is closed, the first opening panel 2 and the second opening panel 3 are in the unfolded state, coplanar and located within the outer frame 1; when the window is opened, the first opening panel 2 and the second opening panel 3 are folded relative to each other.

[0023] Therefore, this invention, by hingedly connecting the first opening sash 2 and the second opening sash 3 and respectively connecting them to the synchronization mechanism 4, enables the first opening sash 2 and the second opening sash 3 to move synchronously during opening and closing. When at least a portion of the synchronization mechanism 4 moves at the top of the outer frame 1, it simultaneously drives the side of the first opening sash 2 away from the second opening sash 3 and the side of the second opening sash 3 away from the first opening sash 2 to move closer or further apart, thereby driving the first opening sash 2 and the second opening sash 3 to fold or unfold in a coordinated manner, effectively avoiding problems such as jamming, skewing, or operational difficulties caused by the failure of linkage between multiple windows. Since the first opening sash 2 and the second opening sash 3 are sequentially arranged within the outer frame 1 along the width direction of the outer frame 1 and are movably arranged relative to the outer frame 1, and the first opening sash 2 and the second opening sash 3 are connected by hinges, combined with the linkage control of the synchronization mechanism 4, the entire folding action is more stable and reliable. Users only need to operate the synchronization mechanism 4 to open or close the entire window, simplifying the operation process, while reducing structural stress concentration and component wear caused by asynchronous movement, thus improving the overall reliability and service life of the folding window. This folding window effectively solves the technical problem of unstable window structure caused by asynchronous movement of the two opening sashes during the opening and closing process in existing folding windows.

[0024] Furthermore, the side of the first opening fan 2 closest to the second opening fan 3 and the side of the second opening fan 3 closest to the first opening fan 2 are connected by a folding hinge 21. The folding hinge 21 forms a hinge structure between the two, allowing the first opening fan 2 and the second opening fan 3 to rotate relative to each other around the hinge axis, thereby realizing the folding or unfolding action.

[0025] Furthermore, there are multiple folding hinges 21, which are spaced apart along the height direction of the first opening fan 2.

[0026] Optionally, in this embodiment, there are 3 folding hinges 21.

[0027] Among them, such as Figure 1 As shown, arrow A points in the direction of the width of the outer frame 1.

[0028] Specifically, such as Figure 1 , Figure 4 and Figure 5As shown, the folding window also includes: a first moving mechanism 5, which is movably disposed within the outer frame 1 along the width direction of the outer frame 1; a first connecting part of the first moving mechanism 5 is fixedly connected to the transmission output part of the synchronization mechanism 4, so as to drive the first moving mechanism 5 to move along the width direction of the outer frame 1 through the synchronization mechanism 4; a second connecting part of the first moving mechanism 5 is rotatably connected to the side of the first opening sash 2 away from the second opening sash 3; and a second moving mechanism 6, which is movably disposed within the outer frame 1 along the width direction of the outer frame 1; a third connecting part of the second moving mechanism 6 is fixedly connected to the transmission output part of the synchronization mechanism 4. The output section is fixedly connected to drive the second moving mechanism 6 to move along the width direction of the outer frame 1 via the synchronization mechanism 4; the fourth connecting part of the second moving mechanism 6 is rotatably connected to the side of the second opening fan 3 away from the first opening fan 2; wherein, the synchronization mechanism 4 drives the first moving mechanism 5 and the second moving mechanism 6 to move closer or further away from each other synchronously, thereby driving the first opening fan 2 and the second opening fan 3 to fold or unfold relative to each other; and when the first opening fan 2 and the second opening fan 3 fold or unfold relative to each other, the first opening fan 2 rotates relative to the first moving mechanism 5, and the second opening fan 3 rotates relative to the second moving mechanism 6.

[0029] With the above-described structure, the first moving mechanism 5 and the second moving mechanism 6 are fixedly connected to the transmission output of the synchronization mechanism 4, and each is rotatably connected to the first opening sash 2 and the second opening sash 3. This allows the synchronization mechanism 4 to drive the first moving mechanism 5 and the second moving mechanism 6 to move synchronously closer or further away along the width direction of the outer frame 1 during movement, thereby reliably driving the first opening sash 2 and the second opening sash 3 to fold or unfold relative to each other. At the same time, since the first opening sash 2 is rotatably connected to the first moving mechanism 5 and the second opening sash 3 is rotatably connected to the second moving mechanism 6, the first opening sash 2 can rotate relative to the first moving mechanism 5 and the second opening sash 3 can rotate relative to the second moving mechanism 6 during the movement of the window sash. This effectively adapts to the angle changes during the folding process, avoids structural interference, and improves the stability of movement and the smoothness of operation.

[0030] Specifically, such as Figure 2 , Figure 4 and Figure 5As shown, the synchronization mechanism 4 includes: a first support frame 41 and a second support frame 42, which are spaced apart on the top of the outer frame 1 along the width direction of the outer frame 1; a first rotating wheel 43 and a second rotating wheel 44, which are rotatably mounted on the first support frame 41 and the second support frame 42, respectively, and the axes of the first rotating wheel 43 and the second rotating wheel 44 extend along the height direction of the outer frame 1; a transmission belt 45, which is sleeved on the first rotating wheel 43 and the second rotating wheel 44, so that the rotation of the first rotating wheel 43 or the second rotating wheel 44 drives the transmission belt 45 to move; the transmission belt 45 forms the transmission output part of the synchronization mechanism 4; wherein, the transmission belt 45 has a first straight segment 451 and a second straight segment 452, which are arranged parallel to each other; the first connecting part of the first moving mechanism 5 is fixed on the first straight segment 451, and the third connecting part of the second moving mechanism 6 is fixed on the second straight segment 452.

[0031] With the above-mentioned structural configuration, the synchronization mechanism 4 adopts a belt drive structure consisting of a first support frame 41, a second support frame 42, a first rotating wheel 43, a second rotating wheel 44, and a transmission belt 45. The transmission belt 45 is sleeved on the two rotating wheels, forming a first straight segment 451 and a second straight segment 452 that are parallel to each other. The first moving mechanism 5 and the second moving mechanism 6 are respectively fixed on the first straight segment 451 and the second straight segment 452. When the first rotating wheel 43 or the second rotating wheel 44 rotates, the transmission belt 45 moves, driving the two straight segments to move synchronously in opposite directions. This drives the first moving mechanism 5 and the second moving mechanism 6 to move closer or further apart along the width direction of the outer frame 1, realizing precise and smooth linkage control of the first opening sash 2 and the second opening sash 3. The structure is simple and reliable, with good transmission synchronization, effectively ensuring the consistency and smoothness of the opening and closing action of the folding window.

[0032] Furthermore, the first straight segment 451 and the second straight segment 452 are arranged opposite to each other along the thickness direction of the outer frame 1.

[0033] Furthermore, the first support frame 41 and the second support frame 42 are embedded in the outer frame 1.

[0034] Optionally, such as Figure 5As shown, when the first rotating wheel 43 rotates clockwise, the first straight segment 451 moves to the left, and the second straight segment 452 moves to the right, thereby driving the first moving mechanism 5 and the second moving mechanism 6 to move away from each other along the width direction of the outer frame 1, thus unfolding the first opening fan 2 and the second opening fan 3. When the first rotating wheel 43 rotates counterclockwise, the first straight segment 451 moves to the right, and the second straight segment 452 moves to the left, thereby driving the first moving mechanism 5 and the second moving mechanism 6 to move closer to each other along the width direction of the outer frame 1, thus folding the first opening fan 2 and the second opening fan 3.

[0035] Furthermore, the synchronization mechanism 4 also includes a driving member, which is drivenly connected to the first rotating wheel 43 or the second rotating wheel 44, and is used to drive the first rotating wheel 43 or the second rotating wheel 44 to rotate.

[0036] Optionally, the drive unit can be an electric drive unit or a manual drive unit.

[0037] Specifically, such as Figure 1 , Figure 3 as well as Figures 4 to 6 As shown, the outer frame 1 has a receiving space 10 for accommodating the first opening fan 2 and the second opening fan 3, and a mounting cavity 11 communicating with the receiving space 10. The mounting cavity 11 is located above the receiving space 10, and the transmission output part of the synchronization mechanism 4 is located in the top region of the receiving space 10. The first moving mechanism 5 includes: a first moving component 51, which is movably disposed in the mounting cavity 11 along the width direction of the outer frame 1, and is connected to the transmission output part of the synchronization mechanism 4; a first hinge outer leaf 52, which is disposed at the bottom of the first moving component 51; the first hinge outer leaf 52 forms a second connecting part of the first moving mechanism 5; and a first hinge inner leaf 53, one side of which is rotatably connected to one side of the first hinge outer leaf 52, and the side of the first hinge inner leaf 53 away from the first hinge outer leaf 52 is fixedly connected to the side of the first opening fan 2 away from the second opening fan 3.

[0038] By adopting the above-described structural configuration, a mounting cavity 11 is provided within the outer frame 1 above the receiving space 10, and the first moving component 51 is movably arranged within the mounting cavity 11. This allows the transmission output of the synchronization mechanism 4 to connect with the first moving component 51 in the top region of the receiving space 10, effectively utilizing the internal space of the window frame and avoiding exposure of the transmission structure. Simultaneously, the first moving mechanism 5 forms a rotatable connection between the outer hinge leaf 52 and the inner hinge leaf 53. The top of the outer hinge leaf 52 is connected to the first moving component 51, and one side of the outer hinge leaf 52 is fixedly connected to the side of the first opening sash 2 away from the second opening sash 3 via the inner hinge leaf 53. The outer hinge leaf 52 and the inner hinge leaf 53 form a rotatable connection, enabling the first opening sash 2 to rotate relative to the outer hinge leaf 52 while moving along the width direction of the outer frame 1 with the first moving component 51. This allows for smooth folding or unfolding actions, balancing structural compactness and movement flexibility.

[0039] When the folding window is closed, the first opening sash 2 and the second opening sash 3 are located within the accommodating space 10.

[0040] Furthermore, such as Figure 6 As shown, the outer hinge leaf 52 of the first hinge has a first clearance notch on the side near the inner hinge leaf 53 of the first hinge; the first moving mechanism 5 also includes a first hinge shaft, which is disposed on the side of the outer hinge leaf 52 of the first hinge near the inner hinge leaf 53 of the first hinge, and its axis extends along the height direction of the outer frame 1, and is partially located within the first clearance notch; the inner hinge leaf 53 of the first hinge is rotatably sleeved on the first hinge shaft on the side away from the first opening fan 2, and is accommodated within the first clearance notch.

[0041] Optionally, the first clearance notch is located in the middle of the outer leaf 52 of the first hinge.

[0042] Optionally, the side of the inner leaf 53 of the first hinge away from the outer leaf 52 of the first hinge is fixedly connected to the side of the first opening fan 2 away from the second opening fan 3 by a first screw.

[0043] Specifically, such as Figures 3 to 6As shown, the mounting cavity 11 has two inner sidewalls that are opposite to each other along the thickness direction of the outer frame 1, and each sidewall has a first guide groove 12 extending along the width direction of the outer frame 1. The first moving assembly 51 includes: a first moving seat 511 located in the mounting cavity 11, the first moving seat 511 being connected to the transmission output part of the synchronization mechanism 4 through a first connector, and the first moving seat 511 being located above the first connector; a first hinge outer leaf 52 mounted on the bottom of the first moving seat 511, and the first connector and the first hinge outer leaf 52 being spaced apart along the width direction of the outer frame 1; at least one pair of first load-bearing wheels 512, the pair of first load-bearing wheels 512 being rotatably mounted on opposite sides of the first moving seat 511, and the pair of first load-bearing wheels 512 being rollably embedded in the two first guide grooves 12 along the extension direction of the first guide grooves 12, so that when the synchronization mechanism 4 drives the first moving seat 511 to move along the width direction of the outer frame 1, each first load-bearing wheel 512 rolls along the extension direction of the first guide groove 12.

[0044] By adopting the above-described structural configuration, first guide grooves 12 extending in the width direction are provided on two inner sidewalls of the mounting cavity 11 along the thickness direction of the outer frame 1, and rotatable first load-bearing wheels 512 are arranged on both sides of the first moving seat 511. The first load-bearing wheels 512 are embedded in the first guide grooves 12 and roll along them, effectively restraining the up-and-down and back-and-forth swaying of the first moving component 51 during movement, improving the stability of operation and load-bearing capacity. At the same time, the first moving seat 511 is connected to the transmission output part of the synchronization mechanism 4 through the first connecting member and is located above the first connecting member. The outer leaf 52 of the first hinge is installed at the bottom of the first moving seat 511 and is spaced apart from the first connecting member along the width direction of the outer frame 1, avoiding structural interference and ensuring that the transmission, load-bearing and hinge functions do not interfere with each other. The overall layout is compact and reasonable, significantly improving the reliability and durability of the opening and closing action of the folding window.

[0045] Furthermore, the first movable seat 511 is fixedly connected to the transmission belt 45 of the synchronization mechanism 4 via the first connecting member. Specifically, the first movable seat 511 is fixedly connected to the first straight segment 451 of the transmission belt 45 via the first connecting member.

[0046] Furthermore, the first connecting member is a first locking buckle. The first locking buckle includes a first mounting plate 56, a first clamping plate 57, and a first fastener. By clamping the transmission belt 45 between the first mounting plate 56 and the first clamping plate 57 and locking it with the first fastener, a fixed connection with the transmission belt 45 is achieved. The first connecting member forms the first connecting portion of the first moving mechanism 5.

[0047] Optionally, the first fastener is the second screw.

[0048] Optionally, in this embodiment, there are three pairs of first load-bearing wheels 512, with each pair of first load-bearing wheels 512 spaced apart on the first movable seat 511 along the width direction of the outer frame 1. Furthermore, the two first load-bearing wheels 512 in each pair are symmetrically installed along the thickness direction of the outer frame 1.

[0049] Among them, such as Figure 1 As shown, arrow B points in the direction of the thickness of the outer frame 1.

[0050] Specifically, such as Figures 3 to 6 As shown, a second guide groove 13 extending along the width direction of the outer frame 1 is provided on the top wall of the mounting cavity 11; the second guide groove 13 is located above the first guide groove 12; the first moving assembly 51 further includes: at least one first guide wheel 513, the first guide wheel 513 is rotatably disposed on the top of the first moving seat 511, the first guide wheel 513 protrudes from the first moving seat 511, and the axis of the first guide wheel 513 extends along the height direction of the outer frame 1; the first guide wheel 513 is rotatably embedded in the second guide groove 13.

[0051] With the above-described structure, a second guide groove 13 extending along the width direction of the outer frame 1 is provided on the top wall of the mounting cavity 11, and a protruding first guide wheel 513 is installed on the top of the first movable seat 511. The first guide wheel 513 is rotatably embedded in the second guide groove 13. Thus, when the first movable seat 511 moves along the width direction, the first guide wheel 513 at the top cooperates with the second guide groove 13 above, effectively limiting its vertical jump and pitch deflection. Combined with the cooperation of the first load-bearing wheels 512 on both sides with the first guide groove 12, multi-directional constraints are formed, significantly improving the stability, guiding accuracy and overall structural rigidity of the first movable component 51.

[0052] Optionally, in this embodiment, there are two first guide wheels 513, and the two first guide wheels 513 are spaced apart on the first movable seat 511 along the width direction of the outer frame 1.

[0053] Specifically, such as Figure 1 , Figure 5 and Figure 6 As shown, the first moving mechanism 5 further includes: at least one second guide wheel 54, which is rotatably disposed on the top of the outer leaf piece 52 of the first hinge, the second guide wheel 54 protruding from the outer leaf piece 52 of the first hinge, and the axis of the second guide wheel 54 extending along the height direction of the outer frame 1; the second guide wheel 54 rolls in contact with the side wall of the outer frame 1 so that when the synchronization mechanism 4 drives the first moving seat 511 to move along the width direction of the outer frame 1, the second guide wheel 54 rolls relative to the side wall of the outer frame 1 along the width direction of the outer frame 1.

[0054] With the above-mentioned structural configuration, by setting a protruding second guide wheel 54 on the top of the outer leaf 52 of the first hinge and making it roll in contact with the side wall of the outer frame 1, the second guide wheel 54 always rolls along the side wall of the outer frame 1 during the movement of the first moving mechanism 5 along the width direction of the outer frame 1, thereby effectively limiting the swaying or deviation of the first opening sash 2 and the first moving mechanism 5 in the window thickness direction (i.e., the front-to-back direction). This structure, together with the first load-bearing wheel 512 and the first guide wheel 513, constitutes a multi-directional guiding system, achieving stable constraints in the three dimensions of up and down, left and right, and front and back, significantly improving the smoothness, synchronization and structural reliability of the opening and closing process of the folding window.

[0055] Among them, the side wall of the outer frame 1 refers to the side of the upper frame 15 of the outer frame 1 that is closer to the interior.

[0056] Optionally, in this embodiment, there are two second guide wheels 54, which are spaced apart at the top of the outer leaf piece 52 of the first hinge along the width direction of the outer frame 1.

[0057] Furthermore, such as Figure 10 As shown, the outer frame 1 includes: an upper frame 15, a left frame 16, a lower frame 17, and a right frame 18 connected in sequence, and a middle frame 19. The middle frame 19 is located between the left frame 16 and the right frame 18, and its two ends are connected to the upper frame 15 and the lower frame 17, respectively. The upper frame 15, left frame 16, lower frame 17, right frame 18, and middle frame 19 form an accommodating space 10, and the upper frame 15 has an installation cavity 11, while the lower frame 17 has an anti-detachment guide groove 14.

[0058] Specifically, such as Figure 2 , Figure 4 and Figure 7 As shown, the second moving mechanism 6 includes: a second moving component 61, which is movably disposed in the mounting cavity 11 along the width direction of the outer frame 1, and is connected to the transmission output part of the synchronization mechanism 4; a third hinge outer leaf 62, disposed at the bottom of the second moving component 61; the third hinge outer leaf 62 forming the fourth connecting part of the second moving mechanism 6; and a third hinge inner leaf 63, one side of the third hinge inner leaf 63 being rotatably connected to one side of the third hinge outer leaf 62, and the side of the third hinge inner leaf 63 away from the third hinge outer leaf 62 being fixedly connected to the side of the second opening fan 3 away from the first opening fan 2.

[0059] Furthermore, as shown in Figure 7, the outer leaf 62 of the third hinge is provided with a second clearance notch on the side near the inner leaf 63 of the third hinge; the second moving mechanism 6 also includes a second hinge shaft, which is disposed on the side of the outer leaf 62 of the third hinge near the inner leaf 63 of the third hinge, and its axis extends along the height direction of the outer frame 1, and is partially located within the second clearance notch; the inner leaf 63 of the third hinge is rotatably fitted onto the second hinge shaft on the side away from the second opening fan 3, and is accommodated within the second clearance notch.

[0060] Optionally, the second clearance notch is located in the middle of the outer leaf 62 of the third hinge.

[0061] Optionally, the inner leaf 63 of the third hinge, away from the outer leaf 62 of the third hinge, is fixedly connected to the side of the second opening fan 3 away from the first opening fan 2 by a third screw.

[0062] Specifically, such as Figure 2 , Figure 4 and Figure 7 As shown, the second moving component 61 includes: a second moving base 611 located in the mounting cavity 11, the second moving base 611 being connected to the transmission output of the synchronization mechanism 4 via a second connector, the second moving base 611 being located above the second connector; a third hinge outer leaf 62 mounted on the bottom of the second moving base 611, and the second connector and the third hinge outer leaf 62 being spaced apart along the width direction of the outer frame 1; at least one pair of second load-bearing wheels 612, the pair of second load-bearing wheels 612 being rotatably mounted on opposite sides of the second moving base 611, and the pair of second load-bearing wheels 612 being rollably embedded in the two first guide grooves 12 along the extension direction of the first guide grooves 12, so that when the synchronization mechanism 4 drives the second moving base 611 to move along the width direction of the outer frame 1, each second load-bearing wheel 612 rolls along the extension direction of the first guide groove 12.

[0063] Furthermore, the second movable seat 611 is fixedly connected to the transmission belt 45 of the synchronization mechanism 4 via the second connecting member. Specifically, the second movable seat 611 is fixedly connected to the second straight segment 452 of the transmission belt 45 via the second connecting member.

[0064] Furthermore, the second connector is a second locking buckle. The second locking buckle includes a second mounting plate 66, a second clamping plate 67, and a second fastener. By clamping the transmission belt 45 between the second mounting plate 66 and the second clamping plate 67 and locking it with the second fastener, a fixed connection with the transmission belt 45 is achieved. The second connector forms the third connecting portion of the second moving mechanism 6.

[0065] Optionally, the second fastener is a fourth screw.

[0066] Optionally, in this embodiment, there are three pairs of second load-bearing wheels 612, with each pair of second load-bearing wheels 612 spaced apart on the second movable seat 611 along the width direction of the outer frame 1. Furthermore, the two second load-bearing wheels 612 in each pair are symmetrically installed along the thickness direction of the outer frame 1.

[0067] Specifically, such as Figure 7 As shown, the second moving component 61 further includes: at least one third guide wheel 613, the third guide wheel 613 is rotatably disposed on the top of the second moving seat 611, the third guide wheel 613 protrudes from the second moving seat 611, and the axis of the third guide wheel 613 extends along the height direction of the outer frame 1; the third guide wheel 613 is rotatably embedded in the second guide groove 13.

[0068] Optionally, in this embodiment, there are two third guide wheels 613, and the two third guide wheels 613 are spaced apart on the second movable seat 611 along the width direction of the outer frame 1.

[0069] Specifically, such as Figure 1 , Figure 5 and Figure 7 As shown, the second moving mechanism 6 further includes: at least one fourth guide wheel 64, which is rotatably disposed on the top of the outer leaf piece 62 of the third hinge. The fourth guide wheel 64 protrudes from the outer leaf piece 62 of the third hinge, and the axis of the fourth guide wheel 64 extends along the height direction of the outer frame 1. The fourth guide wheel 64 rolls in contact with the side wall of the outer frame 1 so that when the synchronizing mechanism 4 drives the second moving seat 611 to move along the width direction of the outer frame 1, the fourth guide wheel 64 rolls relative to the side wall of the outer frame 1 along the width direction of the outer frame 1.

[0070] Optionally, in this embodiment, there are two fourth guide wheels 64, which are spaced apart along the width direction of the outer frame 1 and positioned on the top of the outer leaf piece 62 of the third hinge.

[0071] Specifically, such as Figures 1 to 3 as well as Figure 9 As shown, the outer frame 1 has a receiving space 10 for accommodating the first opening sash 2 and the second opening sash 3, and an anti-detachment guide groove 14 communicating with the receiving space 10. The anti-detachment guide groove 14 extends along the width direction of the outer frame 1 and is located below the receiving space 10. The folding window also includes: a first anti-detachment mechanism 7, the anti-detachment part of which is movably disposed in the anti-detachment guide groove 14 along the extension direction of the anti-detachment guide groove 14; the first anti-detachment mechanism 7 is rotatably connected to the side of the first opening sash 2 away from the second opening sash 3; and a second anti-detachment mechanism 8, the anti-detachment part of which is movably disposed in the anti-detachment guide groove 14 along the extension direction of the anti-detachment guide groove 14; the second anti-detachment mechanism 8 is rotatably connected to the side of the second opening sash 3 away from the first opening sash 2.

[0072] By adopting the above-mentioned structural configuration, an anti-detachment guide groove 14 is provided at the bottom of the outer frame 1, located below the receiving space 10 and extending along the width direction. A first anti-detachment mechanism 7 and a second anti-detachment mechanism 8 are respectively provided on the side of the first opening sash 2 and the second opening sash 3 away from each other and rotatably connected thereto. The anti-detachment parts of the two anti-detachment mechanisms are movably embedded in the anti-detachment guide groove 14, thereby effectively limiting the downward detachment and back-and-forth swaying of the window sash during folding or unfolding. This structure not only improves the stability and safety of the window sash operation and prevents the risk of detachment caused by its own weight, wind pressure or misoperation, but also ensures that the window sash always moves along a predetermined trajectory, enhancing the reliability and service life of the entire window.

[0073] Furthermore, the first anti-detachment mechanism 7 is located below the first moving mechanism 5, and the second anti-detachment mechanism 8 is located below the second moving mechanism 6.

[0074] Specifically, such as Figure 8 As shown, the first anti-detachment mechanism 7 includes: a first mounting base 71; at least one first anti-detachment guide wheel 72, which is rotatably disposed at the bottom of the first mounting base 71, with its axis extending along the height direction of the outer frame 1, and is rotatably embedded in the anti-detachment guide groove 14; a second hinge outer leaf 73, mounted on the top of the first mounting base 71, and protruding from the first mounting base 71; and a second hinge inner leaf 74, one side of which is rotatably connected to one side of the second hinge outer leaf 73, and the side of the second hinge inner leaf 74 away from the second hinge outer leaf 73 is fixedly connected to the side of the first opening fan 2 away from the second opening fan 3. At least one first anti-detachment guide wheel 72 forms the anti-detachment part of the first anti-detachment mechanism 7.

[0075] By adopting the above-described structure, the first anti-detachment mechanism 7 is configured as a hinged structure consisting of a first mounting base 71, a first anti-detachment guide wheel 72, and a second hinge outer leaf 73 and a second hinge inner leaf 74. The first anti-detachment guide wheel 72 is rotatably embedded in the anti-detachment guide groove 14 at the bottom of the outer frame 1. At the same time, the first opening sash 2 is rotatably connected to the first mounting base 71 through the hinge assembly. Thus, during the movement of the window sash, the first opening sash 2 is allowed to rotate smoothly around the hinge axis to achieve folding or unfolding. At the same time, the cooperation between the guide wheel and the guide groove effectively constrains the vertical displacement of the window sash, preventing it from falling off due to its own weight or external force. This structure integrates anti-detachment, guiding, and rotation functions into one, with a compact layout and smooth operation, significantly improving the safety and reliability of the folding window.

[0076] Furthermore, such as Figure 8As shown, the outer flap 73 of the second hinge has a third clearance notch on the side near the inner flap 74 of the second hinge; the first anti-detachment mechanism 7 also includes: a third hinge shaft 75, which is disposed on the side of the outer flap 73 of the second hinge near the inner flap 74 of the second hinge, and its axis extends along the height direction of the outer frame 1, and is partially located in the third clearance notch; the inner flap 74 of the second hinge is rotatably fitted onto the third hinge shaft 75 on the side away from the first opening fan 2, and is accommodated in the third clearance notch.

[0077] Specifically, such as Figure 8 As shown, the first anti-detachment mechanism 7 further includes: at least one fifth guide wheel 76, which is rotatably disposed at the bottom of the outer leaf 73 of the second hinge, and the fifth guide wheel 76 protrudes from the outer leaf 73 of the second hinge. The axis of the fifth guide wheel 76 extends along the height direction of the outer frame 1. The fifth guide wheel 76 rolls in contact with the side of the lower frame 17 of the outer frame 1 that is close to the interior side, so that when the first opening fan 2 is folded or unfolded, the fifth guide wheel 76 rolls relative to the side of the lower frame 17 of the outer frame 1 that is close to the interior side along the width direction of the outer frame 1.

[0078] Optionally, in this embodiment, there are two fifth guide wheels 76, which are spaced apart at the bottom of the outer leaf piece 73 of the second hinge along the width direction of the outer frame 1.

[0079] Specifically, such as Figure 9 As shown, the second anti-detachment mechanism 8 further includes: a second mounting base 81; at least one second anti-detachment guide wheel 82, the second anti-detachment guide wheel 82 being rotatably disposed at the bottom of the second mounting base 81, the axis of the second anti-detachment guide wheel 82 extending along the height direction of the outer frame 1, and the second anti-detachment guide wheel 82 being rotatably embedded in the anti-detachment guide groove 14; a fourth hinge outer leaf 83, mounted on the top of the second mounting base 81, and the fourth hinge outer leaf 83 protruding from the second mounting base 81; a fourth hinge inner leaf 84, one side of the fourth hinge inner leaf 84 being rotatably connected to one side of the fourth hinge outer leaf 83, and the side of the fourth hinge inner leaf 84 away from the fourth hinge outer leaf 83 being fixedly connected to the side of the second opening fan 3 away from the first opening fan 2. At least one second anti-detachment guide wheel 82 forms the anti-detachment part of the second anti-detachment mechanism 8.

[0080] Furthermore, such as Figure 9As shown, the outer leaf 83 of the fourth hinge has a fourth clearance notch on the side near the inner leaf 84 of the fourth hinge; the second anti-detachment mechanism 8 also includes: a fourth hinge shaft 85, which is located on the side of the outer leaf 83 of the fourth hinge near the inner leaf 84 of the fourth hinge, and its axis extends along the height direction of the outer frame 1, and is partially located in the fourth clearance notch; the inner leaf 84 of the fourth hinge is rotatably fitted onto the fourth hinge shaft 85 on the side away from the second opening fan 3, and is accommodated in the fourth clearance notch.

[0081] Specifically, such as Figure 9 As shown, the second anti-detachment mechanism 8 further includes: at least one sixth guide wheel 86, which is rotatably disposed at the bottom of the outer leaf 83 of the fourth hinge, and the sixth guide wheel 86 protrudes from the outer leaf 83 of the fourth hinge. The axis of the sixth guide wheel 86 extends along the height direction of the outer frame 1. The sixth guide wheel 86 rolls in contact with the side of the lower frame 17 of the outer frame 1 that is closer to the interior, so that when the second opening fan 3 is folded or unfolded, the sixth guide wheel 86 rolls relative to the side of the lower frame 17 of the outer frame 1 that is closer to the interior along the width direction of the outer frame 1.

[0082] Optionally, in this embodiment, there are two sixth guide wheels 86, which are spaced apart at the bottom of the outer leaf piece 83 of the fourth hinge along the width direction of the outer frame 1.

[0083] Specifically, such as Figure 1 and Figure 2 As shown, the folding window further includes: a first support mechanism 9 and a second support mechanism 100. The first support mechanism 9 is telescopically arranged along a first preset direction. The first connecting end of the first support mechanism 9 is rotatably arranged on the outer frame 1, and the first free end of the first support mechanism 9 is rotatably arranged on the top of the first opening sash 2. The second support mechanism 100 is telescopically arranged along a second preset direction. The second connecting end of the second support mechanism 100 is rotatably arranged on the outer frame 1, and the second free end of the second support mechanism 100 is rotatably arranged on the top of the second opening sash 3. When the first opening sash 2 and the second opening sash 3 are folded or unfolded relative to each other, both the first support mechanism 9 and the second support mechanism 100 rotate relative to the outer frame 1, and the first support mechanism 9 and the second support mechanism 100 extend or retract synchronously.

[0084] With the above-mentioned structural configuration, a retractable first support mechanism 9 and a second support mechanism 100 are set on the top of the first opening sash 2 and the second opening sash 3, and their two ends are respectively rotatably connected to the outer frame 1 and the corresponding window sash. This allows the two support mechanisms to extend or retract synchronously during the folding or unfolding of the window sash, and rotate around the outer frame 1 as the window sash moves. This structure essentially constitutes a pair of linked limiting wind braces, which can automatically provide support force and limit the sash from swaying, falling or accidentally closing due to wind pressure or its own weight when the window is opened to any angle. Especially in strong wind environments, it effectively enhances the wind resistance stability of the entire window, prevents the window sash from swinging violently or hitting the outer frame, improves the safety and durability of use, and ensures that the folding action is smooth and controllable.

[0085] Optionally, when the folding window is closed, the first opening sash 2 and the second opening sash 3 are arranged sequentially along the width direction of the outer frame 1 and housed in the receiving space 10, and the two are coplanar, forming a flat and continuous closed facade; at this time, the first support mechanism 9 and the second support mechanism 100 are both in a retracted state, their extension axes are collinear, and the whole is arranged in a straight line between the top of the outer frame 1 and the window sash, with a compact structure that does not occupy extra space.

[0086] When the folding window is in the open state, the first opening sash 2 and the second opening sash 3 fold towards each other, causing the first support mechanism 9 and the second support mechanism 100 to rotate synchronously around their connection ends with the outer frame 1, while gradually extending from the retracted state to the unfolded state. At this time, the first support mechanism 9 and the second support mechanism 100 are no longer collinear, but open at a certain angle, together forming a stable triangular support structure. This triangular layout not only effectively improves the rigidity of the window sash in the open state, but also acts as a limiting wind brace to resist swaying or accidental closure caused by wind pressure, ensuring that the window sash remains stable at any opening angle, significantly enhancing safety and operational reliability.

[0087] Specifically, such as Figure 1 and Figure 2 As shown, the folding window also includes: a third support mechanism 200 and a fourth support mechanism 300. The third support mechanism 200 is telescopically arranged along a third preset direction. The third connecting end of the third support mechanism 200 is rotatably arranged at the bottom of the outer frame 1, and the third free end of the third support mechanism 200 is rotatably arranged at the bottom of the first opening sash 2. The fourth support mechanism 300 is telescopically arranged along a fourth preset direction. The fourth connecting end of the fourth support mechanism 300 is rotatably arranged at the bottom of the outer frame 1, and the fourth free end of the fourth support mechanism 300 is rotatably arranged at the bottom of the second opening sash 3. When the first opening sash 2 and the second opening sash 3 are folded or unfolded relative to each other, both the third support mechanism 200 and the fourth support mechanism 300 rotate relative to the outer frame 1, and both the third support mechanism 200 and the fourth support mechanism 300 extend or retract synchronously.

[0088] By adopting the above structural configuration, a third support mechanism 200 and a fourth support mechanism 300 are added to the bottom of the first opening sash 2 and the second opening sash 3, respectively, and rotatably connected to the bottom of the outer frame 1 and the bottom of the corresponding window sash. This ensures that the bottom of the window sash receives synchronous and coordinated support and guidance during folding or unfolding. When the window sash moves, the third support mechanism 200 and the fourth support mechanism 300 extend or retract synchronously and rotate around their connection point with the outer frame 1, effectively sharing the force of the top support mechanism and improving the balance and stability of the entire window structure. This bottom support structure not only enhances the wind pressure resistance and overall rigidity of the window sash in the open state, preventing bottom swaying, sagging, or twisting deformation, but also forms a coordinated dual support system with the first support mechanism 9 and the second support mechanism 100 at the top, further ensuring smooth and reliable folding action and significantly improving the safety, durability, and operational comfort of the folding window.

[0089] The working principles of the third support mechanism 200 and the fourth support mechanism 300 are the same as those of the first support mechanism 9 and the second support mechanism 100 mentioned above, and will not be repeated here.

[0090] Specifically, the middle frame 19 of the outer frame 1 has multiple limiting intermediate lock seats on the side near the opening sash. The multiple limiting intermediate lock seats are spaced apart along the height direction of the outer frame 1. There is an intermediate sliding lock point between the first opening sash 2 and the second opening sash 3 that corresponds to the limiting intermediate lock seat, so as to ensure that the folding window is centered when closed.

[0091] Alternatively, the opening or closing process of the folding window is as follows: The user operates the drive unit (not shown) to drive the synchronization mechanism 4, which in turn drives the first moving mechanism 5 and the second moving mechanism 6 to move synchronously along the width of the outer frame 1. When the first moving mechanism 5 and the second moving mechanism 6 approach each other, the first opening sash 2 and the second opening sash 3 fold towards each other around their hinge point, thus opening the window. When the first moving mechanism 5 and the second moving mechanism 6 move away from each other, the first opening sash 2 and the second opening sash 3 unfold synchronously and are finally coplanarly housed in the receiving space 10, thus closing the window. During this process, the first support mechanism 9, the second support mechanism 100, the third support mechanism 200, and the fourth support mechanism 300 extend or retract synchronously with the movement of the window sash and rotate relative to the outer frame 1, providing stable support and limiting. At the same time, the anti-detachment guide wheels of the first anti-detachment mechanism 7 and the second anti-detachment mechanism 8 roll along the anti-detachment guide groove 14, effectively preventing the window sash from detaching. When the window sash is closed in place, the middle sliding lock point is embedded in the limiting middle lock seat on the middle frame 19, ensuring that the first opening sash 2 and the second opening sash 3 are centered and reliably locked.

[0092] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0093] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0094] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0095] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0096] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A folding window, characterized in that, include: Outer frame (1); The first opening fan (2) and the second opening fan (3) are sequentially arranged inside the outer frame (1) along the width direction of the outer frame (1), and the first opening fan (2) and the second opening fan (3) are movably arranged relative to the outer frame (1); the first opening fan (2) and the second opening fan (3) are hinged. A synchronization mechanism (4) is provided, at least part of which is movably disposed on the top of the outer frame (1). The side of the first opening fan (2) away from the second opening fan (3) and the side of the second opening fan (3) away from the first opening fan (2) are respectively connected to the synchronization mechanism (4) so ​​that the first opening fan (2) and the second opening fan (3) can be folded or unfolded synchronously relative to each other by the movement of the synchronization mechanism (4).

2. The folding window according to claim 1, characterized in that, The folding window also includes: The first moving mechanism (5) has a first connecting part fixedly connected to the transmission output part of the synchronization mechanism (4) so ​​as to drive the first moving mechanism (5) to move along the width direction of the outer frame (1) through the synchronization mechanism (4); the second connecting part of the first moving mechanism (5) is rotatably connected to the side of the first opening fan (2) away from the second opening fan (3). The second moving mechanism (6) has a third connecting part that is fixedly connected to the transmission output part of the synchronization mechanism (4) so ​​that the second moving mechanism (6) can be driven to move along the width direction of the outer frame (1) through the synchronization mechanism (4); the fourth connecting part of the second moving mechanism (6) is rotatably connected to the side of the second opening fan (3) away from the first opening fan (2). The synchronization mechanism (4) drives the first moving mechanism (5) and the second moving mechanism (6) to move closer or further away from each other, thereby causing the first opening fan (2) and the second opening fan (3) to fold or unfold relative to each other; and when the first opening fan (2) and the second opening fan (3) fold or unfold relative to each other, the first opening fan (2) rotates relative to the first moving mechanism (5), and the second opening fan (3) rotates relative to the second moving mechanism (6).

3. The folding window according to claim 2, characterized in that, The synchronization mechanism (4) includes: A first support frame (41) and a second support frame (42) are provided at intervals along the width direction of the outer frame (1) on the top of the outer frame (1); The first rotating wheel (43) and the second rotating wheel (44) are rotatably mounted on the first support frame (41) and the second support frame (42), respectively, and the axis of the first rotating wheel (43) and the axis of the second rotating wheel (44) both extend along the height direction of the outer frame (1). A transmission belt (45) is sleeved on the first rotating wheel (43) and the second rotating wheel (44) so ​​that the transmission belt (45) can be driven to move by the rotation of the first rotating wheel (43) or the second rotating wheel (44); the transmission belt (45) forms the transmission output part of the synchronization mechanism (4); The transmission belt (45) has a first straight segment (451) and a second straight segment (452), which are arranged parallel to each other; the first connecting part of the first moving mechanism (5) is fixed on the first straight segment (451), and the third connecting part of the second moving mechanism (6) is fixed on the second straight segment (452).

4. The folding window according to claim 2, characterized in that, The outer frame (1) has a receiving space (10) for accommodating the first opening fan (2) and the second opening fan (3), and a mounting cavity (11) communicating with the receiving space (10). The mounting cavity (11) is located above the receiving space (10), and the transmission output part of the synchronization mechanism (4) is located in the top region of the receiving space (10); the first moving mechanism (5) includes: The first moving component (51) is movably disposed in the mounting cavity (11) along the width direction of the outer frame (1), and the first moving component (51) is connected to the transmission output part of the synchronization mechanism (4). The first hinge outer leaf (52) is disposed at the bottom of the first moving assembly (51); the first hinge outer leaf (52) forms the second connecting part of the first moving mechanism (5); The inner hinge piece (53) of the first hinge has one side rotatably connected to one side of the outer hinge piece (52) of the first hinge, and the side of the inner hinge piece (53) away from the outer hinge piece (52) of the first hinge is fixedly connected to the side of the first opening fan (2) away from the second opening fan (3).

5. The folding window according to claim 4, characterized in that, The mounting cavity (11) has two inner sidewalls that are opposite each other along the thickness direction of the outer frame (1), each having a first guide groove (12) extending along the width direction of the outer frame (1); the first moving assembly (51) includes: The first movable seat (511) is located inside the mounting cavity (11). The first movable seat (511) is connected to the transmission output part of the synchronization mechanism (4) through the first connector. The first movable seat (511) is located above the first connector. The first hinge outer leaf (52) is installed at the bottom of the first movable seat (511), and the first connector and the first hinge outer leaf (52) are spaced apart along the width direction of the outer frame (1). At least one pair of first load-bearing wheels (512) are rotatably disposed on opposite sides of the first movable seat (511), and the pair of first load-bearing wheels (512) are rotatably embedded in the two first guide grooves (12) along the extension direction of the first guide groove (12), so that when the synchronization mechanism (4) drives the first movable seat (511) to move along the width direction of the outer frame (1), each of the first load-bearing wheels (512) rolls along the extension direction of the first guide groove (12).

6. The folding window according to claim 5, characterized in that, The top wall of the mounting cavity (11) is provided with a second guide groove (13) extending along the width direction of the outer frame (1); the first moving component (51) further includes: at least one first guide wheel (513), the first guide wheel (513) is rotatably disposed on the top of the first moving seat (511), the first guide wheel (513) protrudes from the first moving seat (511), and the axis of the first guide wheel (513) extends along the height direction of the outer frame (1); the first guide wheel (513) is rotatably embedded in the second guide groove (13).

7. The folding window according to claim 6, characterized in that, The first moving mechanism (5) further includes: at least one second guide wheel (54), the second guide wheel (54) being rotatably disposed on the top of the first hinge outer leaf (52), the second guide wheel (54) being disposed protruding from the first hinge outer leaf (52), and the axis of the second guide wheel (54) extending along the height direction of the outer frame (1); the second guide wheel (54) rollingly contacts the side wall of the outer frame (1) so that when the synchronization mechanism (4) drives the first moving seat (511) to move along the width direction of the outer frame (1), the second guide wheel (54) rolls relative to the side wall of the outer frame (1) along the width direction of the outer frame (1).

8. The folding window according to claim 1, characterized in that, The outer frame (1) has a receiving space (10) for accommodating the first opening sash (2) and the second opening sash (3), and an anti-detachment guide groove (14) communicating with the receiving space (10). The anti-detachment guide groove (14) extends along the width direction of the outer frame (1) and is located below the receiving space (10); the folding window further includes: The first anti-detachment mechanism (7) has an anti-detachment part that is movably disposed in the anti-detachment guide groove (14) along the extension direction of the anti-detachment guide groove (14); the first anti-detachment mechanism (7) is rotatably connected to the side of the first opening fan (2) away from the second opening fan (3). The second anti-detachment mechanism (8) has an anti-detachment part that is movably disposed in the anti-detachment guide groove (14) along the extension direction of the anti-detachment guide groove (14); the second anti-detachment mechanism (8) is rotatably connected to the side of the second opening fan (3) away from the first opening fan (2).

9. The folding window according to claim 8, characterized in that, The first anti-detachment mechanism (7) includes: First mounting base (71); At least one first anti-detachment guide wheel (72) is rotatably disposed at the bottom of the first mounting base (71), the axis of the first anti-detachment guide wheel (72) extends along the height direction of the outer frame (1), and the first anti-detachment guide wheel (72) is rotatably embedded in the anti-detachment guide groove (14) along the anti-detachment guide groove (14); The second hinge outer leaf piece (73) is mounted on the top of the first mounting base (71), and the second hinge outer leaf piece (73) protrudes from the first mounting base (71); The inner hinge piece (74) of the second hinge has one side rotatably connected to one side of the outer hinge piece (73) of the second hinge, and the side of the inner hinge piece (74) away from the outer hinge piece (73) of the second hinge is fixedly connected to the side of the first opening fan (2) away from the second opening fan (3).

10. The folding window according to claim 1, characterized in that, The folding window further includes: a first support mechanism (9) and a second support mechanism (100), wherein the first support mechanism (9) is telescopically arranged along a first preset direction, the first connecting end of the first support mechanism (9) is rotatably arranged on the outer frame (1), and the first free end of the first support mechanism (9) is rotatably arranged on the top of the first opening sash (2); the second support mechanism (100) is telescopically arranged along a second preset direction, the second connecting end of the second support mechanism (100) is rotatably arranged on the outer frame (1), and the second free end of the second support mechanism (100) is rotatably arranged on the top of the second opening sash (3); When the first opening fan (2) and the second opening fan (3) are folded or unfolded relative to each other, the first support mechanism (9) and the second support mechanism (100) rotate relative to the outer frame (1), and the first support mechanism (9) and the second support mechanism (100) extend or retract synchronously.

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