A fall-prevention hinge and a door and window assembly

Abstract

The present application relates to a kind of anti-falling hinges and door and window assemblies, including slide, for installing the mounting bracket of door and window leaf and connecting rod assembly, the mounting bracket is arranged on the connecting rod assembly, the connecting rod assembly is rotationally arranged on the slide;Its characterized in that, the anti-falling hinges further include rotating card, the rotating card includes rotating body and at least one convex body, the rotating body is linked with the connecting rod assembly, the convex body is arranged on the rotating body;The rotating body can rotate with the connecting rod assembly, so that the convex body is located outside the slide.When opening door and window leaf, mounting bracket rotates with door and window leaf, rotating body can rotate with connecting rod assembly, so that the convex body is located outside the slide and the necked slot of door and window frame is clamped.Just because rotating card and door and window frame are clamped, so even if the screw of fixed hinge is loose, door and window leaf will not fall, greatly improve the safety performance of door and window leaf.

Description

Technical Field

[0001] This invention relates to the field of door and window hardware accessories, and in particular to an anti-fall hinge and door and window components. Background Technology

[0002] Hinges are a common type of hardware for doors and windows. Their main function is to install doors and windows onto the door and window frames, allowing the doors and windows to rotate relative to the frames.

[0003] Traditional hinges are fixed to door and window sashes with screws. However, over time, these screws can loosen, causing the door or window sash to fall and resulting in serious consequences. Therefore, existing hinges need improvement and development. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an anti-fall hinge and door and window assembly, which aims to solve the problem that existing hinges are easy to detach from the door and window frame, causing the door and window sash to fall.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: An anti-fall hinge is provided, including a slide, a mounting bracket for installing door / window sashes, and a linkage assembly. The mounting bracket is disposed on the linkage assembly, and the linkage assembly is rotatably disposed on the slide. The anti-fall hinge further includes a rotating catch, which includes a rotating body and at least one protrusion. The rotating body is linked with the linkage assembly, and the protrusion is disposed on the rotating body. The rotating body can rotate with the linkage assembly, so that the protrusion is located outside the slide.

[0006] Furthermore, the connecting rod assembly is disposed above the slide block, and the lower surface of the slide block is provided with a receiving groove, and the rotating fastener is disposed in the receiving groove; when the door or window sash is in the closed state, the rotating body and the protrusion are hidden in the receiving groove; when the door or window sash is in the open state, the protrusion extends out of the receiving groove.

[0007] Furthermore, there are two protrusions, which are symmetrically arranged on the rotating body about the axis of rotation.

[0008] Furthermore, the anti-fall hinge also includes a guide rail for mounting on a door or window frame, the slide block being slidably mounted on the guide rail, and the guide rail having at least one side wall having a through hole for the protrusion to extend out.

[0009] Furthermore, the slide includes a first slide and a second slide that slide in opposite directions. The linkage assembly is rotatably mounted on the first slide via a first axis and a second axis, and rotatably mounted on the second slide via a third axis. At least one of the first axis, the second axis, and the third axis is provided with a rotating catch. The linkage assembly drives the first axis, the second axis, and the third axis to rotate, and the axis with the rotating catch drives the rotating catch thereon to rotate.

[0010] Furthermore, the shaft with the rotating clamp is integrally formed with the rotating clamp on it.

[0011] Furthermore, the linkage assembly includes a first support rod, a second support rod, and a third support rod. One end of the first support rod is connected to the first shaft, and the other end is rotatably connected to the mounting bracket. Rotation of the first support rod drives rotation of the first shaft. One end of the third support rod is connected to the third shaft, and the other end is rotatably connected to the mounting bracket. Rotation of the third support rod drives rotation of the third shaft. One end of the second support rod is connected to the second shaft, and the other end is rotatably connected to the mounting bracket. Rotation of the second support rod drives rotation of the second shaft.

[0012] When the first slide and the second slide move closer to or further away from each other, the first support rod and the third support rod rotate in the same direction, the second support rod and the mounting bracket rotate in the same direction, and the second support rod rotates in the opposite direction to the third support rod.

[0013] Furthermore, the third support rod is rotatably connected to the second support rod via a fourth axis and rotatably connected to the mounting bracket via a fifth axis, the fourth axis being located between the third and fifth axes; the mounting bracket is rotatably connected to the first support rod via a sixth axis, the sixth axis being located between the first and fifth axes.

[0014] Furthermore, the hinge also includes a hinge for facilitating the installation of door and window sashes, the hinge being mounted on the sixth axis.

[0015] Furthermore, the mounting bracket is located above the first support rod and the third support rod, with the first support rod and the third support rod supporting the mounting bracket; the third support rod is located above the second support rod, with the second support rod supporting the third support rod.

[0016] Furthermore, the anti-fall hinge also includes a gear, and both the first slide and the second slide are provided with racks that mesh with the gear, so that the first slide and the second slide slide slide synchronously in opposite directions; when the first slide and the second slide are close to each other, the mounting bracket moves away from the first slide, so that the door and window sash can be opened; when the first slide and the second slide are far apart, the mounting bracket moves close to the first slide, so that the second support rod, the third support rod and the mounting bracket overlap, so that the door and window sash can be closed.

[0017] Furthermore, the rack of the first slide and the rack of the second slide mesh parallel to each other on both sides of the gear.

[0018] The present invention also provides a fall-prevention hinge, including a slide, a mounting bracket for installing a door or window sash, and a linkage assembly. The mounting bracket is disposed on the linkage assembly, and the linkage assembly is rotatably mounted on the slide. The fall-prevention hinge further includes a rotating catch, which includes a rotating body and at least one protrusion. The rotating body is rotatably disposed on the slide, and the protrusion is disposed on the rotating body. An external force can drive the rotating body to rotate, so that the protrusion is located outside the slide.

[0019] Furthermore, the rotating body is rotatably mounted on the slide via a rotating shaft, and the connecting rod assembly is rotatably connected to the rotating shaft.

[0020] The present invention also provides a door and window assembly, including a door and window sash and a door and window frame, and further including the anti-fall hinge as described above. The door and window frame is provided with a narrowing groove, the slide is disposed in the narrowing groove, and the door and window sash is mounted on the mounting bracket. The rotating body can rotate with the connecting rod assembly, so that the protrusion is located outside the slide and engages with the narrowing groove.

[0021] Compared to existing hinges, this invention provides an anti-fall hinge and door / window assembly that incorporates a rotating locking mechanism. When the door / window sash is opened, the mounting bracket rotates along with the sash, and the rotating body rotates with the connecting rod assembly, causing the protrusion to engage with the recessed groove of the door / window frame outside the slide block. Because the rotating locking mechanism engages with the door / window frame, even if the screws securing the hinge loosen, the door / window sash will not fall, significantly improving its safety performance. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0023] Figure 1 This is a partial sectional view of a door and window frame provided by existing technology;

[0024] Figure 2 This is a schematic diagram of the open state of the door and window assembly provided by the present invention;

[0025] Figure 3 yes Figure 2 A schematic diagram showing the closed state of the central door and window components;

[0026] Figure 4 yes Figure 2 A schematic diagram showing the status of the anti-fall hinges when the middle door / window sash is open;

[0027] Figure 5 yes Figure 4 Partial exploded view of the anti-fall hinge;

[0028] Figure 6 yes Figure 2 A partial sectional view along the AA direction;

[0029] Figure 7 yes Figure 4 Exploded view of the anti-fall hinge;

[0030] Figure 8 yes Figure 7 Exploded view of the anti-fall hinge;

[0031] Figure 9 yes Figure 3 A schematic diagram showing the status of the anti-fall hinges when the middle door / window sash is closed;

[0032] Figure 10 yes Figure 3 A schematic diagram showing the status of the anti-fall hinges when the middle door / window sash is half-open. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figure 1 As shown, existing door and window frames 100 are all provided with a narrow groove 110 for installing hinges. The narrow groove 110 has a large internal space and a small opening, which is conducive to forming a snap-fit ​​structure. Utilizing this structure, the present invention designs an anti-fall hinge 200 and a door and window assembly.

[0035] like Figure 2 As shown, the door and window assembly includes a door / window sash 300 and a door / window frame 100, and also includes an anti-fall hinge 200. The door / window sash 300 is mounted on the door / window frame 100 via the anti-fall hinge 200. Wherein, as... Figure 2 This is a diagram showing the open state of door and window sash 300; for example... Figure 3 This is a diagram of the closed state of door and window sash 300. Door and window sash 300 is closed by rotating the anti-fall hinge 200.

[0036] like Figure 4 and 5As shown, the present invention provides a fall-prevention hinge 200, including a slide 10, a mounting bracket 20 for mounting a door or window sash 300, and a connecting rod assembly 30. The mounting bracket 20 is disposed on the connecting rod assembly 30, and the connecting rod assembly 30 is rotatably disposed on the slide 10.

[0037] The anti-fall hinge 200 also includes a rotating latch 50, which includes a rotating body 51 and at least one protrusion 52. The rotating body 51 is linked with the linkage assembly 30, and the protrusion 52 is disposed on the rotating body 51. The rotating body 52 can rotate with the linkage assembly 30, so that the protrusion 52 is located outside the slide block 10.

[0038] When the door / window sash 300 is opened, the mounting bracket 20 rotates together with the door / window sash 300, and the rotating body 52 can rotate with the connecting rod assembly 30, so that the protrusion 52 is located outside the slide block 10 and engages with the constriction groove 110 (reference). Figure 6 Since the rotating clip 50 is engaged with the door and window frame 100, the door and window sash 300 will not fall even if the screws fixing the hinge come loose, greatly improving the safety performance of the door and window sash 300.

[0039] refer to Figure 5 The connecting rod assembly 30 is positioned above the slide block 10, and the lower surface of the slide block 10 is provided with a receiving groove 13, in which the rotating locking member 50 is located. This ensures that the rotating locking member 50 does not affect the movement of the slide block 10. When the door / window sash 300 is in the closed state, the rotating body 51 and the protrusion 52 are concealed within the receiving groove 13; when the door / window sash 300 is in the open state, the protrusion extends out of the receiving groove 13 and engages with the narrowing groove 110 to prevent the door / window sash from falling off.

[0040] In this embodiment, there are two protrusions 52, which are symmetrically arranged on the rotating body 51 around the axis of rotation 40. A 90° rotation of the rotating body 51 allows the two protrusions 52 to extend. The two protrusions 52 simultaneously engage with the constriction groove 110, greatly improving the stability of the engagement and preventing the door / window sash 300 from falling. Specifically, the two protrusions 52 are integrally formed with the rotating body 51.

[0041] like Figure 7 As shown, in this embodiment, the slide block 10 includes a first slide block 11 and a second slide block 12 that slide in opposite directions. The connecting rod assembly 30 is rotatably mounted on the first slide block 11 via a first shaft 41 and a second shaft 42, and rotatably mounted on the second slide block 12 via a third shaft 43. By setting the first slide block 11 and the second slide block 12 that slide in opposite directions, this structure of sliding on both sides can shorten the sliding distance of the components and greatly improve their service life.

[0042] Specifically, at least one of the first shaft 41, the second shaft 42, and the third shaft 43 is provided with a rotating retainer 50. The linkage assembly 30 drives the first shaft 41, the second shaft 42, and the third shaft 43 to rotate, and the shaft with the rotating retainer 50 drives the rotating retainer 50 thereon to rotate. In this embodiment, the shaft with the rotating retainer 50 and the rotating retainer 50 thereon are integrally formed. For example, the first shaft 41 is provided with the rotating retainer 50, and the first shaft 41 and the rotating retainer 50 thereon are integrally formed.

[0043] To improve the anti-fall performance of the door and window sash 300, rotating locking parts 50 are provided on the first shaft 41, the second shaft 42, and the third shaft 43. When the door and window sash 300 is in the open state, the three rotating locking parts 50 engage with the narrowing groove 110 simultaneously to ensure that the door and window sash 300 will not fall.

[0044] In other embodiments, the slide block 10 may also include a fixed block and two sliders, the fixed block being disposed between the two sliders, and the two sliders being slidable relative to the fixed block.

[0045] In this embodiment, the linkage assembly 30 includes a first support rod 31, a second support rod 32, and a third support rod 33. One end of the first support rod 31 is connected to the first shaft 41, and the other end is rotatably connected to the mounting bracket 20. Rotation of the first support rod 31 drives rotation of the first shaft 41. One end of the third support rod 33 is connected to the third shaft 43, and the other end is rotatably connected to the mounting bracket 20. Rotation of the third support rod 33 drives rotation of the third shaft 43. One end of the second support rod 32 is connected to the second shaft 42, and the other end is rotatably connected to the mounting bracket 20. Rotation of the second support rod 32 drives rotation of the second shaft 42. That is, the first support rod 31 is linked to the first shaft 41, the second support rod 32 is linked to the second shaft 42, and the third support rod 33 is linked to the third shaft 43.

[0046] When the first slide block 11 and the second slide block 12 move closer to or further apart, the first support rod 31 rotates in the same direction as the third support rod 33, and the second support rod 32 rotates in the same direction as the mounting bracket 20, but in the opposite direction to the third support rod 33. By using only three support rods, the opening and closing of the door / window sash 300 is achieved, resulting in fewer parts, a simplified structure, and smoother movement.

[0047] refer to Figure 8 The connection method between the three support rods and the three shafts is as follows: the support rods are provided with square holes 1, and the shafts are provided with square posts 2 that cooperate with the square holes 1. When the square posts 2 cooperate with the square holes 1, the rotation of the support rods will drive the shafts to rotate synchronously, and then the shafts will drive the rotating clamps 50 to rotate synchronously.

[0048] refer to Figure 6 and Figure 7The anti-fall hinge 200 also includes a guide rail 80 for mounting on the door / window frame 100. The first slide 11 and the second slide 12 are both slidably mounted on the guide rail 80. The guide rail 80 has at least one side wall with a through hole 81 for the protrusion 52 to extend out. Specifically, both sides of the guide rail 80 are provided with strip-shaped through holes 81, which can be set according to the number and position of the rotating clips 50.

[0049] During installation, the guide rail 80 is locked into the constriction groove 110 with screws, so that the slide 10 is set in the constriction groove 110. When the door / window sash 300 needs to be opened, the mounting bracket 20 rotates, driving the rotating shaft 40 to rotate. The rotating clip 50 extends out with the rotating shaft 40 and engages with the constriction groove. The constriction groove 110 is a T-shaped groove.

[0050] In this embodiment, a T-shaped groove is provided on the guide rail 80, and the first slide block 11 and the second slide block 12 are both slidably disposed in the T-shaped groove. The first slide block 11 and the second slide block 12 can only be installed by sliding into the T-shaped groove from one end of the guide rail 80. This installation method is stable, compact, and not easy to shake.

[0051] In the aforementioned transmission structure, the force exerted on the door and window sash 300 is transmitted from the mounting bracket 20, the connecting rod assembly 30, and the three shafts to the three rotating clamps 50. Since the three rotating clamps 50 are engaged with the door and window frame 100, the force is transmitted to the door and window frame 100, greatly reducing the stress on the guide rail 80 and reducing the possibility of screws loosening.

[0052] To ensure more stable installation of the door / window sash 300, the anti-fall hinge 200 also includes a hinge 70, which is mounted on the mounting bracket 20. The side of the door / window sash 300 is fixed to the hinge 70 with screws. In this way, the mounting bracket 20 can rotate synchronously with the door / window sash 300.

[0053] In this embodiment, the third support rod 33 is rotatably connected to the second support rod 32 via a fourth shaft 61, and rotatably connected to the mounting bracket 20 via a fifth shaft 62. The fourth shaft 61 is located between the third shaft 43 and the fifth shaft 62. Thus, the lines connecting the second shaft 42, the third shaft 43, and the fourth shaft 61 on the same plane form a triangle. When the first slide block 11 and the second slide block 12 slide in opposite directions, the rotation directions of the second support rod 32 and the third support rod 33 are opposite. For example, when the first slide block 11 and the second slide block 12 approach each other, the second support rod 32 rotates counterclockwise, and the third support rod 33 rotates clockwise.

[0054] Furthermore, the mounting bracket 20 is rotatably connected to the first support rod 31 via a sixth axis 63, which is located between the first axis 41 and the fifth axis 62. Thus, the lines connecting the first axis 41, the second axis 42, the fourth axis 61, the fifth axis 62, and the sixth axis 63 on the same plane form a pentagon, ensuring that the first support rod 31 and the third support rod 33 rotate in the same direction, and the second support rod 32 and the mounting bracket 20 rotate in the same direction. The side lengths of the triangles and pentagons are set according to actual needs to achieve smooth opening and closing of the door / window sash 300.

[0055] In this embodiment, the length of the second support rod 32 is greater than the length of the first support rod 31, and the length of the third support rod 33 is greater than the length of the second support rod 32. The hinge 70 is mounted on the sixth shaft 63 to facilitate the installation of the door / window sash 300.

[0056] like Figure 9 The diagram shows the folded state of the anti-fall hinge 200 when the door / window sash 300 is closed. The mounting bracket 20 is located above the first support rod 31 and the third support rod 33, which support the mounting bracket 20. That is, the first support rod 31, the second support rod 32, and the third support rod 33 together provide support for the door / window sash 300. This structure is stable and greatly improves the supporting strength.

[0057] In addition, the third support rod 33 is located above the second support rod 32, and the second support rod 32 supports the third support rod 33. This structure is beneficial because when the door and window sash 300 is closed, the first support rod 31, the second support rod 32, the third support rod 33, and the mounting bracket 20 overlap and are stored together, avoiding interference.

[0058] like Figure 10 As shown, the anti-fall hinge also includes a gear 90. Both the first slide 11 and the second slide 12 are equipped with racks 14 that mesh with the gear 90, allowing the first slide 11 and the second slide 12 to slide synchronously in opposite directions. The gear 90 links the first slide 11 and the second slide 12, making the entire mechanism move more compactly and smoothly. Specifically, the racks of the first slide 11 and the second slide 12 mesh parallel to each other on both sides of the gear 90.

[0059] To prevent dust from entering the gear 90 and affecting its smooth sliding, a baffle 91 is installed on the guide rail 80 to shield the gear 90.

[0060] In other embodiments, the anti-fall hinge also includes a motor, which is connected to gear 90 and can drive gear 90 to rotate, causing the first slide 11 and the second slide 12 to slide synchronously in opposite directions. By using a motor, the door and window sash 300 can be automatically opened or closed, making it more convenient and intelligent to use.

[0061] The anti-fall hinge also includes a limiting plate 92, which is L-shaped and is engaged at the end of the guide rail 80. During installation, the limiting plate 92 will be engaged in the groove on the side wall of the door and window frame 100, further improving the stability of the anti-fall hinge 200 and enabling the anti-fall hinge 200 to withstand greater external forces, such as wind.

[0062] refer to Figure 10 This is a schematic diagram showing the state of the anti-fall hinge 200 when the door / window sash 300 is in a half-open state. When the gear 90 rotates clockwise, the first slide 11 and the second slide 12 move closer together, and the mounting bracket 20 rotates counterclockwise, moving away from the first slide 11, thus opening the door / window sash 300. After the door / window sash 300 is opened, the anti-fall hinge 200 is in the following position: Figure 4 As shown, the rotating locking piece 50 is in the extended state and can engage with the constriction groove 110 to prevent the door and window sash 300 from falling.

[0063] refer to Figure 9 The diagram illustrates the state of the anti-fall hinge 200 when the door / window sash 300 is closed. When gear 90 rotates counterclockwise, the first slide 11 and the second slide 12 move away from each other, causing the mounting bracket 20 to move closer to the first slide 11. This causes the second support rod 32, the third support rod 33, and the mounting bracket 20 to overlap, thus closing the door / window sash 300. After the door / window sash 300 is closed, the anti-fall hinge 200 is in the following position: Figure 9 As shown, the rotating locking piece 50 is not extended and is not engaged with the constriction groove 110, which makes it convenient to install the guide rail 80 of the anti-fall hinge 200 inside the constriction groove 110.

[0064] In other embodiments, the rotating body 51 may not be connected to the connecting rod assembly 30 via transmission, but may instead be rotatably mounted on the slide 10. An external force can drive the rotating body 51 to rotate, causing the protrusion 52 to engage with the constriction groove 110 outside the slide 10. This ensures the protrusion 52 remains engaged with the constriction groove 110. For example, the rotating body 51 may be rotatably mounted on the slide via a rotating shaft, with the connecting rod assembly 30 rotatably connected to this shaft. In this configuration, the rotating body 51 and the rotating shaft are fixed together and can rotate synchronously, while the connecting assembly 30 rotates relative to the rotating shaft, and the movement of the connecting assembly 30 does not drive the rotating shaft to rotate. By driving the rotating shaft to rotate via an external force, the rotating body 51 rotates, causing the protrusion 52 to engage with the constriction groove 110 outside the slide 10, thus maintaining constant engagement with the door / window frame 100 and achieving a fall prevention effect.

[0065] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of the present invention.

Claims

1. A fall-prevention hinge, comprising a slide, a mounting bracket for mounting a door or window sash, and a linkage assembly, wherein the mounting bracket is disposed on the linkage assembly, and the linkage assembly is rotatably disposed on the slide; characterized in that, The anti-fall hinge also includes a rotating latch, which includes a rotating body and at least one protrusion. The rotating body is linked with the linkage assembly, and the protrusion is disposed on the rotating body. The rotating body can rotate with the linkage assembly, so that the protrusion is located outside the slide. The connecting rod assembly is disposed above the slide block, and the lower surface of the slide block is provided with a receiving groove, and the rotating clamp is disposed in the receiving groove; When the door or window sash is closed, the rotating body and the protrusion are concealed within the receiving groove; When the door or window sash is in the open position, the protrusion extends out of the receiving groove; The slide includes a first slide and a second slide that slide in opposite directions. The linkage assembly is rotatably mounted on the first slide via a first axis and a second axis, and rotatably mounted on the second slide via a third axis. The anti-fall hinge also includes a gear, and both the first slide and the second slide are provided with racks that mesh with the gear, so that the first slide and the second slide slide slide synchronously in opposite directions; The anti-fall hinge also includes a guide rail for installation on a door or window frame, the slide block is slidably disposed on the guide rail, and at least one side wall of the guide rail has a through hole for the protrusion to extend out.

2. The anti-fall hinge according to claim 1, characterized in that, There are two protrusions, which are symmetrically arranged on the rotating body about the axis of rotation.

3. The anti-fall hinge according to claim 1 or 2, characterized in that, At least one of the first shaft, the second shaft, and the third shaft is provided with a rotating clamp. The linkage assembly drives the first shaft, the second shaft, and the third shaft to rotate, and the shaft with the rotating clamp drives the rotating clamp on it to rotate.

4. The anti-fall hinge according to claim 3, characterized in that, The shaft with the rotating clamp is integrally formed with the rotating clamp on it.

5. The anti-fall hinge according to claim 3, characterized in that, The linkage assembly includes a first support rod, a second support rod, and a third support rod. One end of the first support rod is connected to the first shaft, and the other end is rotatably connected to the mounting bracket. Rotation of the first support rod drives rotation of the first shaft. One end of the third support rod is connected to the third shaft, and the other end is rotatably connected to the mounting bracket. Rotation of the third support rod drives rotation of the third shaft. One end of the second support rod is connected to the second shaft, and the other end is rotatably connected to the mounting bracket. Rotation of the second support rod drives rotation of the second shaft. When the first slide and the second slide move closer to or further away from each other, the first support rod and the third support rod rotate in the same direction, the second support rod and the mounting bracket rotate in the same direction, and the second support rod rotates in the opposite direction to the third support rod.

6. The anti-fall hinge according to claim 5, characterized in that, The third support rod is rotatably connected to the second support rod via a fourth axis and to the mounting bracket via a fifth axis, the fourth axis being located between the third and fifth axes; the mounting bracket is rotatably connected to the first support rod via a sixth axis, the sixth axis being located between the first and fifth axes.

7. The anti-fall hinge according to claim 6, characterized in that, The hinge also includes a hinge for facilitating the installation of door and window sashes, the hinge being mounted on the sixth axis.

8. The anti-fall hinge according to claim 5, characterized in that, The mounting bracket is located above the first support rod and the third support rod, which support the mounting bracket; the third support rod is located above the second support rod, which supports the third support rod.

9. The anti-fall hinge according to claim 5, characterized in that, When the first slide and the second slide approach each other, the mounting bracket moves away from the first slide, allowing the door and window sash to open; when the first slide and the second slide move away from each other, the mounting bracket moves closer to the first slide, causing the second support rod, the third support rod, and the mounting bracket to overlap, allowing the door and window sash to close.

10. The anti-fall hinge according to claim 9, characterized in that, The rack of the first slide and the rack of the second slide mesh parallel to each other on both sides of the gear.

11. A door and window assembly, comprising a door / window sash and a door / window frame, characterized in that, It also includes the anti-fall hinge as described in any one of claims 1 to 10, wherein the door and window frame is provided with a constriction groove, the slide is disposed in the constriction groove, and the door and window sash is mounted on the mounting bracket; the rotating body can rotate with the connecting rod assembly, so that the protrusion is located outside the slide and engages with the constriction groove.

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