A fire-resistant door and window

Abstract

The present application relates to the technical field of doors and windows, and discloses a fire-resistant door and window, which includes a positioning frame and glass connected in the positioning frame. A through hole is provided in the positioning frame, and a positioning groove penetrating through the through hole is provided on the side wall of the positioning frame. Both ends of the positioning groove in the vertical direction and one end in the horizontal direction are closed, and an installation opening for the glass to be moved in is provided at the other end of the positioning groove in the horizontal direction. The glass is embedded in the positioning groove; a limiting component for preventing the glass from disengaging from the installation opening is provided on the positioning frame. The limiting component includes a limiting plate and a rotating shaft fixedly connected to one end of the limiting plate. The rotating shaft is rotatably arranged on the positioning frame, and the axial direction of the rotating shaft is parallel to the installation direction of the glass. The length of the limiting plate is greater than the length of the installation opening, and the width is greater than the width of the installation opening. The present application does not need to replace the positioning frame together after the glass is damaged, and has the effect of low replacement cost.

Description

Technical Field

[0001] The present application relates to the technical field of doors and windows, and in particular to a fire-resistant door and window. Background Art

[0002] Doors and windows are an important part of the building envelope system. They have functions such as thermal insulation, heat insulation, sound insulation, and waterproofing. According to the opening and closing methods, they can be divided into various types such as casement doors and windows, sliding doors and windows, and outward-opening doors and windows.

[0003] Doors and windows in the related art usually include a hollow positioning frame and glass fixedly connected to the positioning frame. In order to ensure the connection strength between the glass and the positioning frame, glass glue is often used to bond the edges of the glass to the positioning frame during processing.

[0004] During the development of this application, the inventors discovered that the aforementioned related art suffers from at least the following issues: Doors and windows are inevitably subject to knocks and knocks from external objects during daily use, causing problems such as wear and cracking of the glass. Damaged glass requires replacement. However, the glass in these doors and windows is attached to the positioning frame by gluing, making it difficult to remove from the positioning frame after damage. Consequently, the glass must be replaced together with the positioning frame, resulting in high replacement costs and requiring improvement. Summary of the Invention

[0005] In order to reduce the replacement cost after glass is damaged, the present application provides a fire-resistant door and window.

[0006] The fire-resistant doors and windows provided in this application adopt the following technical solutions:

[0007] A fire-resistant door and window, comprising a positioning frame and glass connected to the positioning frame, the positioning frame being provided with a through hole, the side wall of the positioning frame being provided with a positioning groove penetrating the through hole, the two ends of the positioning groove in the vertical direction and one end in the horizontal direction being closed, the other end of the positioning groove in the horizontal direction being provided with an installation opening for moving the glass in, the glass being embedded in the positioning groove; a limiting assembly for preventing the glass from escaping from the installation opening is provided on the positioning frame, the limiting assembly comprising a limiting plate and a rotating shaft fixedly connected to one end of the limiting plate, the rotating shaft being rotatably provided on the positioning frame, and the axial direction of the rotating shaft being parallel to the installation direction of the glass, the length of the limiting plate being greater than the length of the installation opening, and the width being greater than the width of the installation opening.

[0008] By adopting the above technical solution, when assembling the doors and windows, first horizontally move the glass into the positioning groove through the installation opening, and then rotate the limiting plate around the rotating shaft towards the side close to the installation opening until the limiting plate blocks the installation opening. At this time, the glass is blocked by the limiting plate and cannot be removed from the installation opening, thus realizing the stable connection between the glass and the positioning frame. After the assembly is in place, the limiting plate can completely block the installation opening, making it difficult for external moisture to enter the positioning groove through the installation opening, and the moisture-proof performance of the doors and windows is good.

[0009] When the glass is damaged due to factors such as being knocked by foreign objects, the limiting plate can be first rotated towards the side away from the installation opening until the installation opening is opened. At this time, the glass is no longer blocked by the limiting plate and can be removed from the installation opening, thus realizing the disassembly of the glass and the positioning frame, so that the glass can be separately disassembled and replaced after being damaged. Compared with the traditional method that requires replacing the positioning frame together, the replacement cost is low and the operation is simple.

[0010] Optionally, a limiting groove for the limiting plate to be embedded is provided on the side wall of the positioning frame close to the installation opening. The limiting groove is communicated with the installation opening. A rotating hole for the rotating shaft to slide through is provided on the groove wall of the limiting groove, and the rotating shaft can rotate circumferentially in the rotating hole.

[0011] By adopting the above technical solution, when the glass is installed in the positioning frame, the limiting plate is embedded in the limiting groove and does not protrude from the positioning frame. This not only makes it difficult for the limiting plate to affect the opening and closing of the doors and windows due to being exposed, but also reduces the risk of accidentally pushing the limiting plate by hand during the opening and closing process of the doors and windows, so as to avoid the installation opening being wrongly opened, which helps to ensure the stability of the glass. When the glass needs to be disassembled and replaced, first move the limiting plate towards the side away from the glass so that the limiting plate is removed from the limiting groove, and then rotate the limiting plate towards the side away from the installation opening, thereby opening the installation opening so that the glass can be removed from the installation opening and the positioning groove, thus realizing the removal of the glass.

[0012] Optionally, an anti - detachment block is fixed on the side of the rotating shaft away from the limiting plate. The diameter of the anti - detachment block is larger than the inner diameter of the rotating hole. An anti - detachment groove communicated with the rotating hole is provided in the positioning frame, and the anti - detachment block slides through the anti - detachment groove and can rotate circumferentially in the anti - detachment groove.

[0013] By adopting the above technical solution, the anti - detachment block is fixed on the side of the rotating shaft away from the limiting plate, which plays a role in blocking the rotating shaft from moving out of the rotating hole, and helps to improve the integrity of the limiting component and the positioning frame.

[0014] Optionally, a torsion spring is fixedly connected between the anti - detachment block and the groove wall of the anti - detachment groove. The torsion spring is sleeved outside the rotating shaft; when the torsion spring is in the natural state, the limiting plate is embedded in the limiting groove.

[0015] By adopting this technical solution, the torsion spring can improve the stability of the limit plate when embedded in the limit slot, making it less likely for the limit plate to fall out of the limit slot when the door or window is subjected to vibration. When removing or replacing the glass, after the limit plate moves out of the limit slot, the torsion spring will deform and generate elastic force. When the limit plate is released, this elastic force can drive the limit plate to automatically return to the limit slot, thereby improving the efficiency of glass removal and replacement.

[0016] Optionally, the positioning frame is provided with at least one group of stoppers for preventing the limiting plate from moving out of the limiting groove, a giveway groove is provided on one side wall of the limiting groove, the stopper includes a stop block hinged in the giveway groove, the length of the stop block is greater than the width of the limiting groove, and a stop groove for the end of the stop block to rotate into is provided on the groove wall of the limiting groove away from the giveway groove, when the limiting plate moves into the limiting groove and the stop block rotates into the stop groove, the stop block abuts against the side of the limiting plate away from the glass.

[0017] By adopting the above technical solution, after the limit plate is embedded in place, the stop block is rotated to the side close to the stop groove until the end of the stop block extends into the stop groove. At this time, the stop block is blocked on the side of the limit plate away from the glass, which prevents the limit plate from moving out of the limit groove, thereby further improving the stability of the limit plate and the positioning effect of the limit plate on the glass.

[0018] Optionally, the stop block is a magnetic block, and the groove walls of the yield groove and the stop groove are both embedded with magnets that attract the stop block.

[0019] By adopting the above technical solution, when removing or replacing the glass, the stop block is rotated into the clearance groove, where it attracts the magnet embedded in the clearance groove, positioning the stop block out of the limit groove to prevent the stop block from interfering with the movement of the limit plate. After the limit plate is embedded in the limit groove, one end of the stop block is rotated into the stop groove, where it attracts the magnet embedded in the stop groove, positioning the stop block in the limit groove, thereby ensuring the stop block's effective position restriction on the limit plate.

[0020] Optionally, a locking block is slidably provided in the limiting plate, and a locking groove that is interference fit with the locking block is provided on the side wall of the positioning frame near the mounting opening. The locking groove is located on the outside of the limiting groove, and the distance from the locking groove to the rotating shaft is equal to the distance from the locking block to the rotating shaft.

[0021] By adopting the above technical solution, when the glass needs to be replaced, the operator can first move the limit plate out of the limit groove, then turn the limit plate to a state where the locking block is aligned with the locking groove, and then embed the locking block into the locking groove, so as to use the locking block to prevent the limit plate from moving back into the limit groove under the action of the torsion spring, so that the operator does not need to synchronously control the position of the limit plate when moving the glass subsequently, and the operation is more convenient.

[0022] Optionally, a pressing groove is formed in the side wall of the limiting plate away from the positioning groove. A pressing block is slidably arranged in the pressing groove. A through hole is formed in the groove wall of the pressing groove facing the positioning groove, and the locking block is slidably arranged in the through hole. A return spring is arranged between the pressing block and the groove wall of the pressing groove. The telescopic direction of the return spring is parallel to the sliding direction of the locking block. When the return spring is in a natural state, one end of the locking block away from the pressing block is located inside the through hole.

[0023] By adopting the above technical solution, after the locking block is removed from the locking groove, the return spring will drive the pressing block to drive the locking block to move to the side away from the positioning frame, so that the locking block is completely received in the through hole, so as to prevent the locking block from interfering with the rotation of the limiting plate.

[0024] Optionally, a rubber pad is arranged on the groove wall of the positioning groove.

[0025] By adopting the above technical solution, when the glass is moved into the positioning groove, the rubber pad will deform under the extrusion of the glass and abut against the glass, which is beneficial to improving the connection tightness between the glass and the positioning frame.

[0026] Optionally, a fire-resistant cavity communicating with the positioning groove is arranged at the top end of the positioning frame. A fire extinguishing bag filled with dry powder is arranged in the fire-resistant cavity. A partition net abutting against the lower side of the fire extinguishing bag is arranged at the top end of the groove wall of the positioning groove.

[0027] By adopting the above technical solution, when a fire occurs and the flame spreads to the door and window and burns through the fire extinguishing bag, the dry powder in the fire extinguishing bag will fall onto the glass along the partition net, thereby playing a role in blocking the continuous spread of the flame and even extinguishing the flame, and the fire resistance performance of the door and window is good.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The glass is embedded in the positioning groove and locked by the limiting plate. Compared with the traditional method of gluing to the positioning frame, the glass can be separately disassembled and replaced after being damaged, and the replacement cost is low;

[0030] 2. After the glass is installed in place, the torsion spring has a tendency to drive the limiting plate to remain embedded in the limiting groove, thereby improving the stability of the limiting plate and its positioning effect on the glass; when the stop block is turned into the stop groove, it blocks on the side of the limiting plate away from the glass, playing a further role in preventing the limiting plate from moving out of the limiting groove;

[0031] 3. After the fire extinguishing bag is burned through by the flame, the dry powder in the fire extinguishing bag will fall along the partition net to block the spread of the flame. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the embodiment of the present application in the closed state of the installation opening.

[0033] Figure 2 It is a schematic structural diagram of the embodiment of the present application in the open state of the installation opening.

[0034] Figure 3 It is a sectional view highlighting the limit component in the embodiment of the present application.

[0035] Figure 4 It is Figure 3 an enlarged view of part A in

[0036] Figure 5 It is a sectional view highlighting the fire extinguishing bag in the embodiment of the present application.

[0037] Explanation of reference numerals:

[0038] 1. Positioning frame; 11. Through hole; 12. Positioning groove; 121. Installation opening; 13. Rubber pad; 14. Limit groove; 141. Relief groove; 142. Stopping groove; 143. Magnet; 15. Rotating hole; 16. Anti - detachment groove; 17. Locking groove; 18. Fire - resistant cavity; 2. Glass; 3. Limit component; 31. Limit plate; 311. Pressing groove; 312. Through - hole; 313. Pressing block; 314. Locking block; 315. Return spring; 316. Handle; 32. Rotating shaft; 33. Anti - detachment block; 34. Torsion spring; 4. Stopping member; 41. Stopping block; 5. Fire extinguishing bag; 6. Partition net. Detailed implementation manners

[0039] The following further elaborates on the present application in conjunction with the attached Figures 1-5 drawings.

[0040] The embodiment of the present application discloses a fire - resistant door and window.

[0041] Referring to Figure 1 , the fire - resistant door and window includes a positioning frame 1 and a glass 2 detachably connected to the positioning frame 1. During use, the positioning frame 1 is installed on a frame fixed to a building wall. The positioning frame 1 in this embodiment is made of heat - insulating broken - bridge aluminum profiles and has the advantage of good heat insulation; the glass 2 is made of heat - resistant glass 2 and has the advantages of low expansion, thermal shock resistance, high temperature resistance, corrosion resistance, and high strength. In other implementation manners, the positioning frame 1 and the glass 2 can also be made of other materials.

[0042] Referring to Figure 1 and Figure 2, a through hole 11 penetrating through the front and back is provided in the middle of the positioning frame 1. The length of the through hole 11 is less than the length of the glass 2, and the width is less than the width of the glass 2. A positioning groove 12 penetrating through the through hole 11 is provided on the horizontal side wall of the positioning frame 1. Both ends of the positioning groove 12 in the vertical direction and one end in the horizontal direction are closed, and an installation opening 121 is provided at the other end of the positioning groove 12 in the horizontal direction. The vertical length of the installation opening 121 is greater than the vertical length of the glass 2, and the width is greater than the thickness of the glass 2, so that the glass 2 can be moved into the positioning groove 12 from the installation opening 121 to realize the assembly of the glass 2 and the positioning frame 1. After the assembly is in place, the front and back, up and down, and the side of the glass 2 away from the installation opening 121 are all blocked by the groove wall of the positioning groove 12, so that the glass 2 can only be moved out of the positioning frame 1 from the installation opening 121. It should be noted that the above front and back, up and down orientations refer to the orientations taking Figure 1 as an example, rather than the absolute orientations of the doors and windows.

[0043] Referring to Figure 2 and Figure 3 , in order to improve the stability of the glass 2 when it is embedded in the positioning groove 12, a rubber pad 13 is fixed on the groove wall of the positioning groove 12. The rubber pad 13 will be compressed and deformed after the glass 2 is moved into the positioning groove 12, so as to press against the glass 2.

[0044] Referring to Figure 2 and Figure 3 , a limiting component 3 for preventing the glass 2 from disengaging from the installation opening 121 is provided on the positioning frame 1. The limiting component 3 includes a limiting plate 31 and a rotating shaft 32 fixedly connected to one end of the limiting plate 31. The axial direction of the rotating shaft 32 is parallel to the installation direction of the glass 2. The length of the limiting plate 31 is greater than the length of the installation opening 121, and the width is greater than the width of the installation opening 121, so that the limiting plate 31 can completely cover the installation opening 121. A limiting groove 14 communicating with the installation opening 121 is provided on the side wall of the positioning frame 1 close to the installation opening 121. The length of the limiting groove 14 is slightly greater than the length of the limiting plate 31, the width is slightly greater than the width of the limiting plate 31, and the depth of the limiting groove 14 is greater than the thickness of the limiting plate 31, so that the limiting plate 31 can completely extend into the limiting groove 14. To facilitate the operator to move the limiting plate 31 out of the limiting groove 14, a handle 316 is fixedly provided in the middle of the side of the limiting plate 31 away from the glass 2.

[0045] Referring to Figure 3 and Figure 4 , a rotating hole 15 is provided at the bottom of the groove wall of the limiting groove 14 away from its opening. The diameter of the rotating hole 15 is greater than the diameter of the rotating shaft 32. The rotating shaft 32 is slidably inserted into the rotating hole 15 and can rotate circumferentially in the rotating hole 15. After the glass 2 is damaged, the operator can first move the limiting plate 31 out of the limiting groove 14 and then rotate the limiting plate 31 around the rotating shaft 32 to a state misaligned with the installation opening 121 to release the limitation of the limiting plate 31 on the glass 2.

[0046] Refer to Figure 4 , a anti - detachment groove 16 communicating with the rotation hole 15 is provided in the positioning frame 1. The anti - detachment groove 16 is located on the side of the rotation hole 15 away from the limit groove 14, and the aperture of the anti - detachment groove 16 is larger than that of the rotation hole 15. A anti - detachment block 33 is fixed on the side of the rotating shaft 32 away from the limit plate 31. The anti - detachment block 33 is slidably inserted into the anti - detachment groove 16 and can rotate circumferentially in the anti - detachment groove 16.

[0047] Refer to Figure 4 , a torsion spring 34 is fixedly connected to the side of the anti - detachment block 33 facing the rotating shaft 32. The torsion spring 34 is sleeved outside the rotating shaft 32 and the end away from the anti - detachment block 33 is fixed on the groove wall of the anti - detachment groove 16. The above - mentioned torsion spring 34 has a tendency to keep the limit plate 31 embedded in the limit groove 14. That is, when the torsion spring 34 is in a natural state, the limit plate 31 is embedded in the limit groove 14, which helps to improve the stability of the limit plate 31.

[0048] Refer to Figure 3 and Figure 4 , a pressing groove 311 is provided at the bottom end of the side wall of the limit plate 31 away from the positioning groove 12. A through - hole 312 is provided on the groove wall of the pressing groove 311 facing the positioning groove 12. A pressing block 313 is slidably arranged in the pressing groove 311. A locking block 314 slidably arranged in the through - hole 312 is fixed on one side of the pressing block 313. The diameter of the locking block 314 is smaller than that of the pressing block 313. A return spring 315 is fixedly arranged between the pressing block 313 and the groove wall of the pressing groove 311. The telescopic direction of the return spring 315 and the sliding direction of the locking block 314 are both parallel to the axial direction of the rotating shaft 32. When the return spring 315 is in a natural state, the end of the locking block 314 away from the pressing block 313 is located inside the through - hole 312 and does not affect the rotation of the limit plate 31.

[0049] Refer to Figure 2 and Figure 4A locking groove 17 is formed on the side wall of the positioning frame 1 near the mounting opening 121, which is an interference fit with the locking block 314. The locking groove 17 is located outside the limiting groove 14, and the distance between the locking groove 17 and the rotating shaft 32 is equal to the distance between the locking block 314 and the rotating shaft 32. After the limiting plate 31 is rotated to align the locking block 314 with the locking groove 17, the operator can use the pressing block 313 to push the locking block 314 into the locking groove 17. The locking block 314 then blocks the limiting plate 31 from moving toward the limiting groove 14 under the elastic force of the torsion spring 34. When moving the glass 2, the operator does not need to simultaneously control the position of the limiting plate 31, thus simplifying the operation. To prevent the return spring 315 from interfering with the engagement of the locking block 314 with the locking groove 17, the friction generated between the locking block 314 and the wall of the locking groove 17 when the locking block 314 extends into the locking groove 17 should be greater than the elastic force generated by the return spring 315. If the locking block 314 needs to be moved out of the locking groove 17, the handle 316 can be used to pull the limit plate 31 toward the side away from the positioning frame 1, so that the limit plate 31 can be used to drive the pressure block 313 and the locking block 314 to move toward the side away from the positioning frame 1, thereby achieving the separation of the locking block 314 and the locking groove 17.

[0050] Reference Figure 1 and Figure 2 In order to further improve the stability of the limiting plate 31, at least one set of stoppers 4 is provided on the positioning frame 1 to prevent the limiting plate 31 from moving out of the limiting groove 14. In this embodiment, two sets of stoppers 4 are distributed along the vertical direction to illustrate its structure. In other embodiments, the stoppers 4 can also be provided in other numbers. Each set of stoppers 4 includes a stop block 41 hingedly provided on the positioning frame 1, and the length of the stop block 41 is greater than the width of the limiting groove 14. A clearance groove 141 is provided on one side of the groove wall of the limiting groove 14, and one end of the stop block 41 is hingedly provided on the bottom wall of the clearance groove 141. A stop groove 142 for the stop block 41 to rotate and extend into is provided on the groove wall of the limiting groove 14 away from the clearance groove 141. When the limiting plate 31 moves into the limiting groove 14 and the stop block 41 rotates into the stop groove 142 , the stop block 41 abuts against the side of the limiting plate 31 away from the glass 2 , thereby preventing the limiting plate 31 from moving toward the side away from the limiting groove 14 .

[0051] Reference Figure 2 In order to improve the stability of the stop block 41, the stop block 41 in this embodiment is made of magnetic material, and magnets 143 that attract each other with the stop block 41 are embedded in the groove walls of the give way groove 141 and the groove walls of the stop groove 142, so that the stop block 41 is fixed in the give way groove 141 or the stop groove 142 by magnetic attraction.

[0052] Reference Figure 3 and Figure 5A fire-resistant cavity 18 is formed at the top of the positioning frame 1. The fire-resistant cavity 18 is connected to and arranged directly above the positioning groove 12. A fire extinguishing bag 5 filled with dry powder is placed in the fire-resistant cavity 18. A partition 6 is fixed to the top of the groove wall of the positioning groove 12. The partition 6 abuts the lower side of the fire extinguishing bag 5 to support the fire extinguishing bag 5. In the event of a fire, the flames will burn through the fire extinguishing bag 5, and the dry powder will spill out and play a certain role in extinguishing the fire.

[0053] It should be noted that in order to realize the technical solution in this embodiment, the positioning frame 1 can be divided into two independent modules along the front and rear directions during actual production. The above modules can be assembled into one after the fire extinguishing bag 5, limit assembly 3 and torsion spring 34 and other structures are installed in place.

[0054] The fire-resistant door and window of the embodiment of the present application is implemented as follows: when the door and window are assembled, the glass 2 is embedded in the positioning groove 12, the limiting plate 31 is embedded in the limiting groove 14, and the stop block 41 is against the side of the limiting plate 31 away from the glass 2, so that the glass 2 is not easily moved out of the positioning groove 12 along the installation opening 121, and the overall stability of the door and window is good. If the glass 2 is damaged, the operator can first rotate the stop block 41 into the clearance groove 141, and then use the handle 316 to pull the limiting plate 31 out of the limiting groove 14. Thereafter, the limiting plate 31 is rotated about the rotation axis 32 until the locking block 314 is aligned with the locking groove 17. The locking block 314 is then pressed into the locking groove 17 by the pressing block 313, thereby locking the limiting plate 31. At this time, the glass 2 is no longer blocked by the limiting plate 31 and can be removed from the installation opening 121, so that the damaged glass 2 can be replaced separately, with low replacement cost and convenient operation.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A fire-resistant door and window, comprising a positioning frame (1) and glass (2) connected in the positioning frame (1), wherein through holes (11) are formed in the positioning frame (1), and it is characterized in that: A positioning groove (12) penetrating the through hole (11) is provided on the side wall of the positioning frame (1), and the positioning groove (12) is closed at both ends in the vertical direction and one end in the horizontal direction, and an installation opening (121) for the glass (2) to be moved in is provided at the other end in the horizontal direction, and the glass (2) is embedded in the positioning groove (12); a limiting assembly (3) for preventing the glass (2) from escaping from the installation opening (121) is provided on the positioning frame (1), and the limiting assembly (3) includes a limiting plate (31) and a rotating shaft (32) fixedly connected to one end of the limiting plate (31), the rotating shaft (32) is rotatably provided on the positioning frame (1), and the axial direction of the rotating shaft (32) is parallel to the installation direction of the glass (2), the length of the limiting plate (31) is greater than the length of the installation opening (121), and the width is greater than the width of the installation opening (121); A limiting groove (14) for the limiting plate (31) to be embedded is provided on the side wall of the positioning frame (1) near the installation opening (121), the limiting groove (14) and the installation opening (121) are communicated with each other, and a rotating hole (15) for the rotating shaft (32) to slide through is provided on the groove wall of the limiting groove (14), and the rotating shaft (32) can rotate circumferentially in the rotating hole (15); An anti-slip block (33) is fixed on one side of the rotating shaft (32) away from the limiting plate (31), the diameter of the anti-slip block (33) is larger than the inner diameter of the rotating hole (15), an anti-slip groove (16) communicating with the rotating hole (15) is provided in the positioning frame (1), and the anti-slip block (33) is slidably inserted into the anti-slip groove (16) and can rotate circumferentially in the anti-slip groove (16); A torsion spring (34) is fixedly connected between the anti-slip block (33) and the groove wall of the anti-slip groove (16), and the torsion spring (34) is sleeved on the outside of the rotating shaft (32); when the torsion spring (34) is in a natural state, the limiting plate (31) is embedded in the limiting groove (14); The positioning frame (1) is provided with at least one group of stoppers (4) for preventing the limiting plate (31) from moving out of the limiting groove (14); a clearance groove (141) is provided on one side wall of the limiting groove (14); the stopper (4) comprises a stop block (41) hinged in the clearance groove (141); the length of the stop block (41) is greater than the width of the limiting groove (14); a stop groove (142) for the end of the stop block (41) to rotate into is provided on the wall of the limiting groove (14) away from the clearance groove (141); when the limiting plate (31) moves into the limiting groove (14) and the stop block (41) rotates into the stop groove (142), the stop block (41) abuts against the side of the limiting plate (31) away from the glass (2); A locking block (314) is slidably provided in the limiting plate (31), and a locking groove (17) is provided on the side wall of the positioning frame (1) close to the mounting opening (121) and is interference-fitted with the locking block (314). The locking groove (17) is located outside the limiting groove (14), and the distance between the locking groove (17) and the rotating shaft (32) is equal to the distance between the locking block (314) and the rotating shaft (32). A pressing groove (311) is provided on the side wall of the limiting plate (31) away from the positioning groove (12), a pressing block (313) is slidably provided in the pressing groove (311), a through hole (312) is provided on the groove wall of the pressing groove (311) facing the positioning groove (12), and the locking block (314) is slidably provided in the through hole (312).

2. The fire-resistant door and window according to claim 1, characterized in that: The stop block (41) is a magnetic block, and the groove walls of the yield groove (141) and the stop groove (142) are both embedded with magnets (143) that attract the stop block (41).

3. The fire-resistant doors and windows according to claim 1, characterized in that: A return spring (315) is provided between the pressing block (313) and the groove wall of the pressing groove (311). The expansion and contraction direction of the return spring (315) is parallel to the sliding direction of the locking block (314). When the return spring (315) is in a natural state, the end of the locking block (314) away from the pressing block (313) is located inside the through hole (312).

4. The fire-resistant door and window according to claim 1, wherein: A rubber pad (13) is provided on the groove wall of the positioning groove (12).

5. The fireproof doors and windows according to claim 1, characterized in that: The top of the positioning frame (1) is provided with a fire-resistant cavity (18) which is in communication with the positioning groove (12); a fire-extinguishing bag (5) filled with dry powder is provided in the fire-resistant cavity (18); and a partition net (6) is provided at the top of the groove wall of the positioning groove (12) which abuts against the lower side of the fire-extinguishing bag (5).

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