Quick-release anti-misoperation side-hung type fire rescue window and operation method thereof

Abstract

According to the quick-disassembly anti-misoperation side-hung type fire rescue window and the operation method thereof, for a double-sash side-hung window with the window opening size meeting the requirement that a rescue channel formed after a vertical mullion is disassembled meets the fire control standard requirement, on the basis that the original performance of the side-hung window is kept, the size of the window opening is reduced; the device has the function of quickly dismantling the vertical mullion by hands in emergency, and a rescue channel conforming to fire-fighting standards is formed instantly. The window comprises a fixed frame, an opening sash and a mullion, and is characterized by further comprising a locking structure and an unlocking mechanism; the mullion is detachably connected with the fixed frame through a locking structure; the unlocking mechanism is connected with the locking structure, and the locking structure is converted into an unlocking state from a locking state through the unlocking mechanism, so that the mullion can be detached from the fixed frame; guide structures matched with the fixing frame are arranged at the upper end and the lower end of the mullion.

Description

Technical Field

[0001] This invention belongs to the field of building door and window technology, specifically relating to a quick-release, anti-misoperation casement fire rescue window and its operation method. Background Technology

[0002] Fire rescue windows are crucial access points for firefighters to enter buildings from the outside to conduct firefighting and rescue operations during a fire. According to the "Code for Fire Protection Design of Buildings" GB50016, the clear dimensions of a fire rescue window should not be less than 1.0m × 1.0m, and the bottom edge of the window should not be more than 1.2m from the indoor floor. These dimensions ensure that firefighters wearing rescue equipment can pass through smoothly.

[0003] In practical engineering applications, casement windows, as a common type of building window, are generally limited to the fixed sash when used as fire rescue windows. Integrating them into the operable sash presents significant challenges. Due to structural limitations, the width of a single operable sash in a conventional casement window is typically less than 1.0m. Integrating a fire rescue window into the fixed sash, requiring the glass to be broken to create a rescue passage, presents several problems: First, with limited window opening width (e.g., 1.6m or less), the net width of the fixed sash after deducting the window frame is unlikely to reach 1.0m; second, the remaining operable sash width is too small to meet room ventilation requirements; and third, this separation severely impacts the aesthetics and transparency of the building facade. In buildings with numerous constraints limiting window opening size, especially in urban renewal projects, conventional casement window structures are insufficient to meet the requirements for fire rescue windows.

[0004] Currently, there are mullionless casement window solutions on the market. These products are designed to allow both windows to open simultaneously, forming a complete passageway, by eliminating the mullion. However, this solution has significant drawbacks: high manufacturing costs, extremely high requirements for the load-bearing capacity of the hardware, strict requirements for installation precision, and reduced airtightness and watertightness compared to traditional casement windows, resulting in higher maintenance costs in the later stages.

[0005] Therefore, while keeping the cost of conventional casement windows basically unchanged or slightly increased, it is necessary to design and develop a casement fire rescue window that can be widely used in conventional sizes. This window should meet the size requirements of fire rescue windows in the regulations, without affecting daily ventilation functions and building aesthetics. This has important engineering application value and practical significance. Summary of the Invention

[0006] The present invention aims to overcome the shortcomings of the prior art and provide a casement fire rescue window with reasonable structural design, simple operation, quick disassembly, and anti-misoperation method. For double casement windows with window opening size that meets the fire protection code requirements after the vertical mullion is removed, the present invention enables the window to quickly disassemble the vertical mullion by hand in an emergency while maintaining the original performance of the casement window, instantly forming a rescue passage that meets the fire protection code.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a quick-release, anti-misoperation casement fire rescue window, comprising a fixed frame, an operable sash, and a mullion, characterized in that: it further comprises a locking structure and an unlocking mechanism; the mullion is detachably connected to the fixed frame via the locking structure; the unlocking mechanism is connected to the locking structure, and the unlocking mechanism causes the locking structure to change from a locked state to an unlocked state, thereby allowing the mullion to be detached from the fixed frame; the upper and lower ends of the mullion are provided with guide structures that cooperate with the fixed frame.

[0008] The locking structure of the present invention includes a claw and a slot; the claw is fixed to the mullion, the slot is fixed to the fixed frame, and the claw and the slot are engaged together.

[0009] The claw of the present invention is provided with an operating part on the inner side of the room, which is used to drive the claw from the inner side to separate the claw from the slot, thereby releasing the lock.

[0010] The unlocking mechanism of the present invention includes a traction rope and an operating component; one end of the traction rope is fixed to the operating part of the locking structure, and the other end extends to the outdoor side of the mullion and is connected to the operating component; the operating component is configured to trigger the unlocking of the locking structure by pulling the traction rope when it is pressed downward.

[0011] The unlocking mechanism of the present invention also includes a pulley, which is rotatably mounted on a fixed frame; a traction rope is connected to the pulley.

[0012] The operating component of the present invention is provided with a limiting ring at its lower part to limit the downward stroke of the operating component.

[0013] The present invention provides an operating port on the indoor side of the mullion, which is connected to the locking structure; and an indoor anti-misoperation device is provided on the operating port.

[0014] The indoor anti-misoperation device of the present invention includes an indoor flip cover, which is installed on the mullion and is used to close and open the operating port.

[0015] The inner side of the indoor flip cover of the present invention is provided with an elastic buckle, and a corresponding locking groove is provided on the middle mullion. When the indoor flip cover is closed, the elastic buckle is engaged in the locking groove to achieve locking.

[0016] The present invention provides an outdoor anti-misoperation device on the outdoor side of the mullion.

[0017] The outdoor anti-misoperation device of the present invention includes a base, an outdoor flip cover, and a sound-emitting device; the base is fixed on the middle mullion; the outdoor flip cover is rotatably installed on the middle mullion for opening and closing the base; the sound-emitting device is installed in the base.

[0018] The sound-generating device of the present invention includes a sound-generating mechanism and a triggering mechanism. When the flip cover is opened, the triggering mechanism drives the sound-generating mechanism to emit an audible alarm.

[0019] The triggering mechanism of the present invention is a ratchet, which is rotatably mounted on the base; the sound-generating mechanism includes a sound-generating scraper and a transmission mechanism; the fixed end of the sound-generating scraper is fixed on the base, and the free end is in contact with the ratchet; the transmission mechanism includes a drive toothed belt, which meshes with the ratchet, and one end of the drive toothed belt is hinged to the outdoor flip cover, and the other end is mounted on a rotating mechanism, which is set on the base.

[0020] The guide structure of the present invention is configured to, through cooperation with the fixed frame, limit the displacement of the mullion along the width direction of the window and guide the mullion to move in the direction toward the outside during disassembly.

[0021] The guiding structure described in this invention is embodied in: The upper and lower ends of the mullion on the indoor side are both obtuse angle structures. The fixed frame is provided with grooves that cooperate with the obtuse angle structures. The obtuse angle structures are inserted into the grooves to limit the displacement of the mullion along the width of the window. Furthermore, the upper and lower ends of the mullion are inclined. The upper end of the mullion is lower on the indoor side and higher on the outdoor side, while the lower end of the mullion is higher on the indoor side and lower on the indoor side.

[0022] A method for operating a quick-release, misoperation-preventing casement fire rescue window, characterized by providing at least two independent operating paths, including the following steps: (1) First operating route, operating from the outdoor side: When firefighters or rescue personnel are outdoors, follow these steps: When the outdoor flip cover is lifted, the sound device will be triggered during the lifting process to emit an audible alarm to alert people inside; Pull the traction rope, which pulls the claw, causing it to disengage from the corresponding slot, and the locking structure is successfully unlocked; Remove the mullion: After the locking structure is unlocked, push the mullion outward by hand to completely detach it from the fixing frame; Create a passageway: Open both operable doors to their maximum angle to create a rescue passageway that meets fire safety regulations; (2) Second operating path, operating from the indoor side: When personnel are indoors and need to escape urgently, or when firefighters are operating from the indoor side, follow these steps: Pressing or moving the operating part on the indoor side directly disengages the claw from the slot, and the locking structure is successfully unlocked; Remove the mullion: After the locking structure is unlocked, push the mullion outward by hand to completely detach it from the fixing frame; Create a passageway: Open both operable doors to their maximum angle to create a rescue passageway that meets fire safety regulations.

[0023] Compared with the prior art, the present invention has the following advantages and effects: 1. Significantly Enhanced Flexibility in Fire Rescue Window Installation: This invention innovatively breaks through the limitation of conventional casement windows, which can only achieve fire rescue functions with fixed sashes. Through a unique mullion design, the installation of fire rescue windows is no longer constrained by the fixed sash form, greatly enhancing design flexibility and adaptability, and providing more possibilities for building facade design.

[0024] 2. Strong structural compatibility and low implementation and promotion costs: Except for the mullion and matching connecting components, the rest of the components of this invention are consistent with conventional casement windows, exhibiting extremely high compatibility. This design not only boasts mature manufacturing processes and simple installation, but also increases the overall cost only slightly compared to conventional casement windows, effectively overcoming the high cost of high-end solutions and creating favorable conditions for large-scale promotion and application.

[0025] 3. High adaptability to window opening size and wide applicability: Compared with traditional solutions, this invention effectively reduces the requirements for building window opening size. For standard-sized double-leaf casement windows that meet specifications, after the operable sash is fully opened and the mullion is removed, a passage that meets the net size requirements of fire rescue windows can be formed, greatly expanding the application scope of this technology in existing and new buildings.

[0026] 4. Convenient and efficient operation, rapid rescue response: In actual fire rescue applications, firefighters only need two simple steps to complete the operation: First, open the flip cover on the outside, press the operating piece down to the limit ring, then push the mullion outwards and fully open both doors to enter the room for fire fighting and rescue. The entire process is intuitive and simple, enabling the rapid formation of a standard rescue channel in emergencies, buying valuable time for fire fighting and rescue.

[0027] 5. Dual operational redundancy ensures superior system reliability: This invention establishes a dual operational mechanism that coordinates indoor and outdoor operations: the outdoor side is triggered by a linkage unlocking mechanism, while the indoor side has an independent operating unit. This redundancy design ensures that even if the unlocking mechanism fails unexpectedly, the mullion can still be removed through indoor operation, thus improving the overall system reliability by an order of magnitude.

[0028] 6. Comprehensive safety protection and excellent anti-misoperation performance: This invention is equipped with professional anti-misoperation devices on both the indoor and outdoor sides, effectively preventing safety issues caused by accidental contact. The indoor anti-misoperation device is designed to require a certain level of operational awareness and can only be opened by following the "press-deform-unlock-flip" operation sequence. This facilitates use by adults in emergencies while significantly reducing the risk of young children accidentally opening it out of curiosity or unconscious behavior. The outdoor anti-misoperation device features clear fire safety signs and operating instructions, and integrates a mechanical audible alarm function. This allows firefighters to quickly identify the device and effectively deters unauthorized intrusion, achieving a perfect balance between safety protection and fire rescue.

[0029] 7. Overall Advantages: Through its innovative mullion design, this invention successfully resolves the conflict between fire rescue windows and daily use needs while maintaining or slightly increasing the cost of conventional casement windows. It combines the advantages of flexible installation, wide applicability, convenient operation, high reliability, and good safety, achieving a perfect balance between compliance with regulations, economy, and practicality. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the interior facade structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the exterior facade structure in the partially open state after the mullion has been disassembled, according to an embodiment of the present invention. Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of section I-I; Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure of section II-II; Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of section III-III; Figure 6 for Figure 5 A magnified structural diagram of section C; Figure 7 for Figure 5 A magnified structural diagram of section D in the middle; Figure 8 for Figure 5 Enlarged structural diagram of section D with the flip cover open; Figure 9 for Figure 3 A magnified structural diagram of part B in the middle section; Figure 10 for Figure 1 Exploded axonometric view of the outdoor side of section A in the middle; Figure 11 forFigure 1 Exploded axonometric view of the outdoor side of section E in the middle; In the diagram: 1-Fixed frame 1, 1-1-Lower part, 1-2-Upper part, 1-3 Groove, 2-Opening sash, 3-Middle mullion, 3-1-First cavity, 3-2-Second cavity, 3-3-Third cavity, 3-4-Locking groove, 3-5-Limiting ring, 3-6-Window frame mounting groove, 3-7-Obtuous angle structure, 3-8-Operating port, 4-Claw, 4-1-Claw hook, 4-2-Operating part, 5-Claw groove, 6-Interior flip cover, 6-1-Elastic buckle, 6-2-Interior flip cover fixing seat, 6-3-Interior flip cover pivot, 7-Traction rope, 7-1-First traction rope, 7-2-Second traction rope 7-3-Operating component, 7-4-Limit end, 7-5-Pressure cap, 8-First pulley, 9-Second pulley, 10-Third pulley, 11-Fourth pulley, 12-Base, 12-1-Base mounting buckle, 13-Outdoor flip cover, 13-1-Outdoor flip cover fixing seat, 13-2-Outdoor flip cover pivot, 13-3-Limit block, 14-Ratchet, 15-Sound scraper, 16-Drive toothed belt, 16-1-Constant force spring, 16-2-Toothed belt mounting seat, 16-3-Toothed belt connecting shaft, 17-Guide rail, 18-Fifth pulley, 19-Isolation slide, 20-Fire rescue window sign. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0032] Those skilled in the art will understand that the various technical features disclosed in this invention (such as "glass fiber reinforced polyester (PBT)" and "stainless steel") encompass a series of equivalent alternatives that achieve the same or similar functions. Conventional substitutions and modifications to these features should be included within the scope of protection of this invention.

[0033] See Figures 1-11 The quick-release anti-misoperation casement fire rescue window of this invention includes a fixed frame 1, an opening sash 2 and a mullion 3. The mullion 3 is detachably connected to the fixed frame 1 through a locking structure and can be removed from the fixed frame 1. The window is also equipped with an anti-misoperation device to prevent the locking structure from accidentally disengaging.

[0034] The mullion 3, through its upper and lower guide structures, cooperates with the fixed frame 1 to allow it to be quickly pushed outwards by hand during disassembly. The guide structures are as follows: the upper and lower ends of the mullion 3 on the indoor side are both obtuse-angled structures 3-7; the fixed frame 1 has grooves 1-3 that mate with the obtuse-angled structures 3-7. The obtuse-angled structures 3-7 are inserted into the grooves 1-3 to limit the displacement of the mullion 3 along the width of the window. Furthermore, the upper and lower end faces of the mullion 3 are inclined, with the upper end lower on the indoor side and higher on the outdoor side, and the lower end higher on the indoor side and lower on the indoor side. This ensures that the vertical length of the mullion 3 on the indoor side is less than the vertical length on the outdoor side, guiding the mullion 3 to move towards the outdoor side during disassembly. To optimize the installation and disassembly experience of the mullion 3, achieving a smooth and effortless process, and to avoid stress concentration in the fixing frame 1 and control the displacement of the fixing frame 1 along the window width direction, the design angle range of the obtuse angle structure 3-7 is determined to be 158° to 172°, and the design range of the length difference is determined to be 2.5mm to 4.5mm. It is understood that the above ranges are preferred designs based on specific profiles and working conditions. Those skilled in the art can adaptively adjust and optimize the above parameters based on the actual profile strength, manufacturing tolerances, and usage requirements, under the guidance of the present invention. All such adjustments and optimizations should be considered to fall within the protection scope of this invention.

[0035] like Figure 5 , Figure 6 , Figure 9 As shown, the locking structure is mainly used to achieve a detachable connection between the mullion 3 and the fixed frame 1. When the locking structure is locked, the mullion 3 is fixed to the fixed frame 1. When the locking structure is unlocked, the mullion 3 is separated from the fixed frame 1, and the mullion 3 can be detached from the fixed frame 1. The locking structure includes a claw 4 and a slot 5.

[0036] The claw 4 is integrally injection molded from glass fiber reinforced polyester (PBT), with a glass fiber content of 15%-40%, such as PBT-GF30. It is fixed to the aluminum alloy profile of the mullion 3 by screws. The slot 5 is a groove directly extruded into the aluminum alloy profile of the fixing frame 1.

[0037] The claw 4 is an elastic arm structure with a hook 4-1 in its middle. The hook 4-1 is adapted to the slot 5, and the two form an interlocking connection. When the mullion 3 is inserted into the fixing frame 1, the elastic arm of the claw 4 deforms, causing the hook 4-1 to slide in and lock into the slot 5. In this way, the claw 4 and the slot 5 are engaged together, and reliable locking is achieved by utilizing the elasticity and wear resistance of the engineering plastic.

[0038] To enable secure unlocking from the indoor side, the claw 4 is equipped with an operating part 4-2 on the indoor side. By pressing or flicking the operating part 4-2 towards the indoor side, the user can drive the elastic arm of the claw 4 to deform, causing the hook 4-1 to separate from the slot 5, thereby releasing the lock.

[0039] like Figure 5 As shown, the locking structure is also connected to an unlocking mechanism, which changes the locking structure from a locked state to an unlocked state, thereby allowing the mullion 3 to be detached from the fixed frame 1. In a preferred embodiment, the unlocking mechanism includes a pulley block, a traction rope 7, and an operating component 7-1.

[0040] The pulley system includes a first pulley 8, a second pulley 9, a third pulley 10, and a fourth pulley 11, all made of glass fiber reinforced polyester (PBT). The first pulley 8 and the second pulley 9 together guide the traction rope 7 of the locking structure connected to the lower part 1-1 of the fixed frame 1; the third pulley 10 and the fourth pulley 11 together guide the traction rope 7 of the locking structure connected to the upper part 1-2 of the fixed frame 1. Each pulley is rotatably mounted on the fixed frame 1 via a stainless steel axle, the outer surface of which is coated with a polymer coating to ensure corrosion resistance.

[0041] The core of the traction rope 7 is made of multi-strand stainless steel wire, and the outer layer is coated with a polymer coating, which combines strength and corrosion resistance. The contact area between the movable end of the traction rope 7 and the mullion 3 is isolated by an isolation groove 19 made of glass fiber reinforced polyester (PBT) fixed on the mullion 3 to avoid direct contact between the two, which would cause wear and electrochemical corrosion.

[0042] Two sets of traction ropes 7 are provided, corresponding to the upper and lower locking structures of the fixed frame 1, respectively. These two sets of traction ropes 7 are the first traction rope 7-1 and the second traction rope 7-2. One end of the first traction rope 7-1 is fixedly connected to the operating part 4-2 of the locking structure of the lower part 1-1 of the fixed frame 1 through a stainless steel clamping cap 7-5. Then, the traction rope 7-1 passes through the through hole on the side wall between the first cavity 3-1 and the second cavity 3-2 of the mullion 3, and the through hole on the side wall between the second cavity 3-2 and the third cavity 3-3 of the mullion 3. Next, the traction rope 7-1 passes around the first pulley 8 and the second pulley 9, and finally its other end extends to the outdoor side of the mullion 3 and connects with the operating part 7-3. One end of the second traction rope 7-2 is fixed in the same way. Its path is similar. After passing through the corresponding cavity side wall through holes in sequence, it goes around the fourth pulley 11 and the third pulley 10. Finally, its other end extends to the outdoor side and connects with the operating piece 7-3.

[0043] The operating component 7-3 is made of the same stainless steel as the traction rope 7 and is located on the outdoor side of the mullion 3, allowing for unlocking from the outdoor side. When the user presses down on the operating component 7-3, the operating component 7-3 simultaneously pulls the first traction rope 7-1 and the second traction rope 7-2, which in turn pulls the operating parts 4-2 of the upper and lower locking structures, achieving synchronous unlocking on the outdoor side.

[0044] To ensure safe and reliable operation, a limiting ring 3-5 is provided below the operating component 7-3 to limit its downward stroke and prevent damage to the mechanism caused by excessive pressing exceeding the maximum working stroke of the traction rope 7. As a preferred embodiment, the limiting ring 3-5 is made of glass fiber reinforced polyester (PBT) and is fixed to the side wall of the mullion 3 by riveting to avoid electrochemical corrosion with the traction rope 7 and the side wall of the mullion 3.

[0045] In addition, after the end of the traction rope 7 passes through the hole provided on the limiting ring 3-5, a limiting end 7-4 is fixed thereon. The horizontal cross-sectional dimension of the limiting end 7-4 is larger than the horizontal cross-sectional dimension of the hole in the limiting ring 3-5. This can effectively prevent the traction rope from accidentally coming loose from the pulley mechanism and falling into the third cavity 3-3 due to thermal expansion and contraction or improper operation, thus ensuring the long-term stability of the mechanism.

[0046] like Figure 5 , Figure 6 , Figure 9 As shown, an operating port 3-8 is provided on the indoor side of the mullion 3. The operating port 3-8 is connected to the locking structure, and the locking structure can be operated through the operating port 3-8. An indoor anti-misoperation device is provided on the operating port 3-8, which includes an indoor flip cover 6, an indoor flip cover pivot 6-3, and an indoor flip cover fixing seat 6-2. The indoor flip cover 6 is integrally injection molded from glass fiber reinforced polyester (PBT). It is connected to the indoor flip cover fixing seat 6-2 fixed on the mullion through the indoor flip cover pivot 6-3, and is used to close and open the operating port 3-8. The indoor flip cover pivot 6-3 is made of stainless steel, and the indoor flip cover fixing seat 6-2 is made of glass fiber reinforced polyester (PBT), and is fixed to the mullion 3 by riveting.

[0047] The inner side of the interior flip cover 6 is provided with an elastic buckle 6-1 integrally formed with the flip cover body as a locking part. The free end of the elastic buckle 6-1 has a wedge-shaped head, and a corresponding locking groove 3-4 is provided on the central mullion 3. When the interior flip cover 6 is in the closed position, the wedge-shaped head of the elastic buckle 6-1, under its own elastic force, engages with the locking groove 3-4 on the central mullion, thereby locking the interior flip cover 6.

[0048] like Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 11As shown, an outdoor anti-misoperation device is installed on the outdoor side of the mullion 3. The outdoor anti-misoperation device includes a base 12, an outdoor flip cover 13, and a sound-emitting device. The outdoor flip cover 13 has fire safety signs and warning words etched on the front, and the base 12 has operation instructions etched on both sides.

[0049] The base 12 is integrally injection molded from glass fiber reinforced polyester (PBT), and the base 12 is provided with base mounting buckles 12-1. The base mounting buckle 12-1 is engaged and fixed with the window frame mounting groove 3-6 on the mullion 3, thereby fixing the base 12 to the mullion 3.

[0050] The outdoor flip cover 13 is integrally injection molded from glass fiber reinforced polyester (PBT). Its end is hinged to an outdoor flip cover mounting base 13-1 fixed to the mullion 3 via an outdoor flip cover pivot 13-2, allowing the outdoor flip cover 13 to be rotatably mounted on the mullion 3 and rotate around the outdoor flip cover pivot 13-2 for opening and closing. The top surface of the outdoor flip cover 13 is designed with an outwardly sloping surface and a drip edge at its bottom edge to prevent rainwater accumulation and backflow, while also facilitating opening. The outdoor flip cover mounting base 13-1 is fixedly connected by riveting through corresponding mounting holes on the mullion 3 wall via plastic posts on its back. A limit block is provided on the outdoor flip cover mounting base 13-1 to limit the maximum opening angle of the outdoor flip cover 13, preventing the drive belt 16 from exceeding its maximum working stroke.

[0051] The sound-emitting device includes a sound-emitting mechanism and a triggering mechanism. When the outdoor flip cover 13 is opened, the triggering mechanism drives the sound-emitting mechanism to emit an audible alarm. The sound-emitting device is housed in a box formed by the base 12 and the outdoor flip cover 13.

[0052] The triggering mechanism is a ratchet 14, which is rotatably mounted on the base 12 via a stainless steel shaft. The ratchet 14 is made of stainless steel with a module of 0.3, 20 teeth, a tooth tip circle diameter of 6.7 mm, and a thickness of 5.5 mm.

[0053] The sound-generating mechanism includes a sound-generating scraper 15 and a transmission mechanism. The sound-generating scraper 15 is 0.15mm thick and is made of spring steel sheet. Its fixed end is fixed to the base 12 by riveting, while its free end is in contact with the teeth of the ratchet 14.

[0054] The transmission mechanism includes a drive toothed belt 16. The drive toothed belt 16 engages with a ratchet 14, so that when the outdoor flip cover 13 is opened, it drives the ratchet 14 to rotate and periodically actuate the sound-emitting scraper 15 to produce sound. One end of the drive toothed belt 16 is hinged to the toothed belt mounting seat 16-2 at the far inner end of the outdoor flip cover 13 via a toothed belt connecting shaft 16-3, and the other end is mounted on a rotating mechanism. This rewinding mechanism is set on the base 12. At the same time, the drive toothed belt 16 is also housed in a guide rail 17, which is integrally injection molded from the same material as the base 12, and can slide along it. The guide rail 17 is a hollow square tube, which is bonded and fixed to the corresponding positioning groove of the base 12 by high-performance epoxy resin structural adhesive, and has a limiting pin on one side for radial positioning.

[0055] The structure of the rewinding mechanism is as follows: at the end of the drive toothed belt 16, there is a thin sheet made of stainless steel with a thickness of 0.2 mm and a width of 2.0 mm that constitutes a constant force spring 16-1. The constant force spring 16-1 extends in the opposite direction after passing around a fifth pulley 18 made of glass fiber reinforced polyester (PBT) fixed on the base 12. Its rewinding force can continuously force the drive toothed belt 16 to maintain a tight engagement with the ratchet 14 and eliminate movement gaps.

[0056] To prevent the drive belt 16 and the sound-emitting scraper 15 from interfering with each other during operation, they are configured to be staggered in the width direction of the window, and a gap of not less than 0.5 mm is maintained between the outer wall of the guide rail 17 and the sound-emitting scraper 15.

[0057] This invention provides a quick-release, anti-misoperation casement fire rescue window, offering multiple operating paths, as detailed below. Figure 5 , Figure 6 , Figure 7 , Figure 8 The specific operating procedures will be explained.

[0058] (1) Two-way operation mode.

[0059] This invention supports two independent operation paths: one from the outdoor side and one from the indoor side.

[0060] (11) First operating route, operating from the outdoor side: When firefighters or rescue personnel are outdoors, they can operate according to the following steps: First unlocking operation (disabling the anti-misoperation state): Manually lift the outdoor flip cover 13 on the outdoor side. During this lifting process, the sound-emitting device will be triggered, emitting a piercing audible alarm to alert people inside.

[0061] Second unlocking operation (disengaging the latch connection): Subsequently, press down on the operating piece 7-3 on the outdoor side. This operation transmits power through the pulley and traction rope 7 mechanism, simultaneously pulling the hooks 4-1 at both ends, causing them to disengage from the corresponding slots 5, and the locking structure is successfully unlocked.

[0062] Remove the mullion: After the locking structure is unlocked, push the mullion 3 outwards by hand to completely detach it from the fixing frame 1.

[0063] Create a passageway: Open both operable doors 2 to their maximum angle to create a rescue passageway that meets fire safety regulations.

[0064] (12) Second operating path, operating from the indoor side: When personnel are indoors and need to escape urgently, or when firefighters are operating from the indoor side, the following steps can be taken: First unlocking operation (disabling the anti-misoperation state): Press the interior flip cover 6 on the interior side. This pressing action causes the elastic buckle 6-1 on the interior flip cover 6 to elastically deform. Then, pry the head of the elastic buckle 6-1 towards the interior side, thereby disengaging the elastic buckle 6-1 from the locking groove 3-4 on the mullion 3 and unlocking it. Subsequently, flip the unlocked interior flip cover 6 upwards.

[0065] Second unlocking operation (disengaging the latch connection): Subsequently, press or move the operating parts 4-2 of the locking structure at both ends of the middle mullion 3 on the indoor side to directly disengage the hook 4-1 from the slot 5, and the locking structure is successfully unlocked.

[0066] Remove the mullion: After the locking structure is unlocked, push the mullion 3 outwards by hand to completely detach it from the fixing frame 1.

[0067] Create a passageway: Open both operable doors 2 to their maximum angle to create a rescue passageway that meets fire safety regulations.

[0068] (2) Outdoor single-path operation mode.

[0069] The steps in this mode are completely consistent with the description of the first operation path above, namely: Flip up the outdoor flip cover 13 on the outdoor side (triggers an alarm) to perform the first unlocking operation.

[0070] Press down on the operating piece 7-3 to perform the second unlocking operation.

[0071] Push the middle section 3 outwards.

[0072] Open the second opening to create a rescue passage.

[0073] (3) Indoor single-path operation mode.

[0074] The steps in this mode are completely consistent with the description of the second operation path above, namely: Press the interior flip cover 6 on the interior side to disengage the elastic buckle 6-1 from the locking groove 3-4, and then flip up the interior flip cover 6 to perform the first unlocking operation.

[0075] Press or move the operating parts 4-2 of the locking structure at both ends of the mullion 3 on the indoor side to perform the second unlocking operation.

[0076] Push the middle section 3 outwards.

[0077] Open the second opening to create a rescue passage.

[0078] It should be noted that the specific embodiments described in this specification are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications, additions, or equivalent substitutions to the above embodiments, but all such changes should fall within the scope derived from the inventive concept. The scope of protection of this invention is determined by the claims; any equivalent changes or modifications made based on the spirit and essence of this invention should be covered within the scope of protection of this invention.

Claims

1. A quick-release, anti-misoperation casement fire rescue window, comprising a fixed frame, an operable sash, and a mullion, characterized in that: It also includes locking structures and unlocking mechanisms; The mullion is detachably connected to the fixed frame via a locking structure; the unlocking mechanism is connected to the locking structure, and the unlocking mechanism changes the locking structure from a locked state to an unlocked state, thereby allowing the mullion to be detached from the fixed frame; the upper and lower ends of the mullion are provided with guide structures that cooperate with the fixed frame.

2. The quick-release, anti-misoperation casement fire rescue window according to claim 1, characterized in that: The locking structure includes a claw and a slot; the claw is fixed to the mullion, the slot is fixed to the fixed frame, and the claw and the slot are engaged together.

3. The quick-release, anti-misoperation casement fire rescue window according to claim 2, characterized in that: An operating part is provided on the inner side of the claw, which is used to drive the claw from the inner side to separate the claw from the slot, thereby releasing the lock.

4. The quick-release, anti-misoperation casement fire rescue window according to claim 3, characterized in that: The unlocking mechanism includes a traction rope and an operating component; one end of the traction rope is fixed to the operating part of the locking structure, and the other end extends to the outdoor side of the mullion and is connected to the operating component; the operating component is configured to trigger the unlocking of the locking structure by pulling the traction rope when it is pressed downward.

5. The quick-release, anti-misoperation casement fire rescue window according to claim 4, characterized in that: The unlocking mechanism also includes a pulley, which is rotatably mounted on a fixed frame; a traction rope is connected to the pulley.

6. The quick-release, anti-misoperation casement fire rescue window according to claim 4, characterized in that: A limiting ring is provided below the operating component to limit the downward stroke of the operating component.

7. The quick-release, anti-misoperation casement fire rescue window according to claim 1, characterized in that: An operating port is provided on the indoor side of the mullion, and the operating port is connected to the locking structure; an indoor anti-misoperation device is provided on the operating port.

8. The quick-release, anti-misoperation casement fire rescue window according to claim 7, characterized in that: The indoor anti-misoperation device includes an indoor flip cover, which is installed on the mullion and used to close and open the operating port.

9. The quick-release, anti-misoperation casement fire rescue window according to claim 8, characterized in that: The inner side of the indoor flip cover is provided with an elastic buckle, and a corresponding locking groove is provided on the middle mullion. When the indoor flip cover is closed, the elastic buckle is engaged in the locking groove to achieve locking.

10. The quick-release, anti-misoperation casement fire rescue window according to claim 4, characterized in that: An outdoor anti-misoperation device is installed on the outdoor side of the mullion.

11. The quick-release, anti-misoperation casement fire rescue window according to claim 10, characterized in that: The outdoor anti-misoperation device includes a base, an outdoor flip cover, and a sound-emitting device; The base is fixed to the mullion; the outdoor flip cover is rotatably mounted on the mullion for opening and closing the base; the sound-generating device is installed in the base.

12. The quick-release, anti-misoperation casement fire rescue window according to claim 11, characterized in that: The sound-generating device includes a sound-generating mechanism and a triggering mechanism. When the flip cover is opened, the triggering mechanism drives the sound-generating mechanism to emit an audible alarm.

13. The quick-release, anti-misoperation casement fire rescue window according to claim 12, characterized in that: The triggering mechanism is a ratchet, which is rotatably mounted on the base; the sound-generating mechanism includes a sound-generating scraper and a transmission mechanism; the fixed end of the sound-generating scraper is fixed on the base, while the free end contacts the ratchet; the transmission mechanism includes a drive toothed belt, which meshes with the ratchet, and one end of the drive toothed belt is hinged to the outdoor flip cover, while the other end is mounted on a rotating mechanism, which is located on the base.

14. The quick-release, anti-misoperation casement fire rescue window according to claim 1, characterized in that: The guide structure is configured to, through cooperation with the fixed frame, limit the displacement of the mullion along the width of the window and guide the mullion to move toward the outside side during disassembly.

15. The quick-release, anti-misoperation casement fire rescue window according to claim 14, characterized in that: The guiding structure is manifested as follows: The upper and lower ends of the mullion on the indoor side are both obtuse angle structures. The fixed frame is provided with grooves that cooperate with the obtuse angle structures. The obtuse angle structures are inserted into the grooves to limit the displacement of the mullion along the width of the window. Furthermore, the upper and lower ends of the mullion are inclined. The upper end of the mullion is lower on the indoor side and higher on the outdoor side, while the lower end of the mullion is higher on the indoor side and lower on the indoor side.

16. A method for operating a quick-release, anti-misoperation casement fire rescue window as described in any one of claims 11-13, characterized in that: Provide at least two independent operation paths, including the following steps: (1) First operating route, operating from the outdoor side: When firefighters or rescue personnel are outdoors, follow these steps: When the outdoor flip cover is lifted, the sound device will be triggered during the lifting process to emit an audible alarm to alert people inside; Pull the traction rope, which pulls the claw, causing it to disengage from the corresponding slot, and the locking structure is successfully unlocked; Remove the mullion: After the locking structure is unlocked, push the mullion outward by hand to completely detach it from the fixing frame; Create a passageway: Open both operable doors to their maximum angle to create a rescue passageway that meets fire safety regulations; (2) Second operating path, operating from the indoor side: When personnel are indoors and need to escape urgently, or when firefighters are operating from the indoor side, follow these steps: Pressing or moving the operating part on the indoor side directly disengages the claw from the slot, and the locking structure is successfully unlocked; Remove the mullion: After the locking structure is unlocked, push the mullion outward by hand to completely detach it from the fixing frame; Create a passageway: Open both operable doors to their maximum angle to create a rescue passageway that meets fire safety regulations.

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