Indoor and outdoor double-sided opening fire rescue casement window

Abstract

The application discloses an indoor and outdoor double-side opening fire-fighting rescue casement window, and relates to the technical field of building curtain walls.The window frame and the sash frame are hinged through a plurality of groups of load-bearing butt hinges, and a bidirectional unlocking assembly and a drop angle compensation structure are arranged between the two; the bidirectional unlocking assembly adopts a gear transmission box to link indoor and outdoor double handles, and through a transmission rod, a lock pin is driven to cooperate with a block seat to realize indoor and outdoor double-side locking and unlocking; the outdoor handle is hidden in a hollow groove of the window glass; the drop angle compensation structure is matched with a guide wheel and a jacking inclined surface to complete the drop angle reset when the sash frame is closed; the application can realize indoor and outdoor double-side opening, meet the fire-fighting rescue requirement of 90-degree full opening, has strong heavy-load bearing capacity, does not damage the overall effect of the outer facade, can automatically compensate the drop angle of the sash frame, and is stable and safe in operation.

Description

Technical Field

[0001] This invention relates to the field of building curtain wall technology, specifically to a double-sided opening casement window for fire rescue both indoors and outdoors. Background Technology

[0002] With the rapid development of high-rise and super high-rise building projects, unitized glass curtain walls have become the mainstream application form for the facades of high-end public buildings and residential buildings. As a core component of the fire safety system of high-rise buildings, the opening and closing operation performance, rescue adaptability, structural reliability and environmental durability of fire rescue windows directly determine the efficiency of personnel escape and the safety of fire rescue operations in emergency scenarios such as fires.

[0003] Currently, there are significant differences in the functional requirements for fire rescue windows between domestic and international building fire protection codes. Although the domestic "Code for Fire Protection Design of Buildings" clearly stipulates the size and spacing of fire rescue windows, the conventional rescue method still mainly relies on breaking the glass from the outside to enter the room. This method poses safety hazards such as falling glass fragments causing injury and time-consuming window breaking operations that delay rescue opportunities. At the same time, relevant domestic industry standards impose strict restrictions on the opening area of ​​casement windows on building curtain walls. The area of ​​a conventional opening window should not exceed 1.5㎡ and should not exceed 2.0㎡, which is difficult to adapt to the design requirements of large-sized fire rescue windows.

[0004] Fire safety regulations in developed countries and regions such as Singapore explicitly require that fire rescue windows must be operable from both the indoor and outdoor sides. In an emergency, they must simultaneously meet the dual operational needs of indoor evacuation and outdoor fire rescue. At the same time, they impose extremely high quantitative requirements on the opening angle of the window sash and the effective rescue passage space.

[0005] In existing technologies, conventional building casement windows generally adopt a single-sided opening and closing locking structure. Their handles and transmission gears are integrated into one piece, which can only be unlocked and opened / closed from the indoor side. They cannot achieve opening control from the outdoor side, and cannot meet the mandatory requirements of overseas standards for two-way opening of fire rescue windows.

[0006] The few window structures that can be opened in both directions often use two independent locking and transmission mechanisms for the interior and exterior. This not only results in complex structures, cumbersome installation procedures, poor opening and closing synchronization, and high failure rates, but also often features protruding, exposed handles on the exterior side, which seriously damages the overall visual effect and decorative uniformity of the building facade and fails to meet the architect's core design requirements for the integrity and aesthetics of the building facade.

[0007] Meanwhile, to meet the effective passage requirements of fire rescue operations, overseas projects often employ large-section windows with dimensions far exceeding those commonly used in China. The accompanying multi-layered laminated insulated glass significantly increases the overall weight of the window sash. Conventional outward-opening windows typically use sliding supports as the load-bearing and opening limit components. However, commercially available standardized sliding support hardware cannot simultaneously meet the load-bearing requirements of heavy window sashes and the 90-degree full opening angle requirement. Common issues include insufficient load-bearing capacity leading to plastic deformation, limited opening angle preventing connection to fire rescue platforms, and, after prolonged use, stuttering and abnormal noises during opening and closing. These components are completely unsuitable for the long-term stable use requirements of large-section, heavy fire rescue windows.

[0008] Furthermore, conventional outward-opening casement windows typically employ exposed hinge components. Exposed hinges not only disrupt the overall aesthetic of the building facade but also expose the windows to wind, rain, and UV radiation, making them prone to corrosion, jamming, and aging failure, significantly reducing the smoothness of window opening and closing and shortening the structural lifespan. Existing concealed hinge structures generally suffer from limited installation space, extremely high installation precision requirements, and are susceptible to deformation due to installation deviations, resulting in low installation efficiency and significant challenges in quality control, hindering their widespread adoption in curtain wall projects.

[0009] For outward-opening casement windows with large panels and single-sided hinges, the opening side of the window sash is prone to sagging and deformation due to its own weight (i.e., the sagging angle problem), especially when opened at a large angle. This sagging angle deformation not only leads to inaccurate alignment of the window sash locking structure and difficulty in opening and closing, but in severe cases, it can also cause sealing failure, rainwater leakage, and even pose a significant safety hazard of the window sash falling off. Current technologies often alleviate the sagging angle problem by increasing the stiffness of the profile section and thickening the walls of the hardware components. However, this not only significantly increases engineering costs but also fails to fundamentally achieve automatic reset and dynamic compensation of the window sash sagging angle, thus failing to solve the core problem of window sash closure difficulties and locking failure caused by sagging angle deformation.

[0010] In summary, the existing fire rescue casement window structure cannot simultaneously meet the four core performance requirements of bidirectional indoor and outdoor opening function, load-bearing capacity and large-angle opening of heavy-duty multi-pane window sashes, uniformity of building facade decoration, and automatic compensation of window sash droop angle. It is difficult to meet the mandatory requirements of high-standard fire protection codes abroad and the appearance design requirements of high-end buildings, and has significant limitations in engineering applications.

[0011] Therefore, developing a fire rescue casement window that is suitable for large-scale fire rescue scenarios, can be easily opened from both indoor and outdoor sides, has excellent load-bearing performance, meets fire requirements for opening angle, can be fully concealed without affecting the facade effect, and has an automatic drop angle compensation function has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0012] The purpose of this invention is to provide a double-sided opening casement window for fire rescue, which aims to overcome the shortcomings of the existing technology.

[0013] To achieve the above objectives, the present invention adopts the following technical solution: A double-sided opening casement window for fire rescue includes a window frame and a window sash frame. The window sash frame is fitted inside the window frame. Multiple sets of load-bearing hinge assemblies are arranged at intervals along the vertical direction on one side of the window sash frame. The window sash frame is fixedly installed to the inner wall of the window frame through the multiple sets of load-bearing hinge assemblies. A two-way unlocking assembly is provided between the opposite side of the window sash frame and the inner wall of the other side of the window frame. The two-way unlocking assembly includes a gear transmission box. A transmission rod is fixedly installed at the top and bottom of the gear transmission box. The transmission rod is slidably connected to the surface of the window sash frame. Multiple locking pins are equidistantly arranged on the surface of the transmission rod along its length direction. A stop block seat is fixedly installed on the inner wall of the window frame corresponding to each of the locking pins. The gear shaft of the gear transmission box is fixedly installed with an inner handle and an outer handle at its inner and outer ends, respectively. By twisting the inner handle or the outer handle, the gear transmission box is driven to drive the transmission rod so that the horizontal position of the locking pin and the stop block seat coincides or is vertically misaligned, so as to realize the locking or opening of the window sash frame and the window frame. A window glass panel is fixedly installed on the outdoor side of the window sash frame. The window glass panel has a hollowed-out groove corresponding to the outer handle, and the outer handle is hidden in the hollowed-out groove. A corner compensation structure is provided between the bottom of the opening side of the window frame and the inner wall of the window frame, which is used to reset the bottom corner when the window frame is closed, so as to close the window frame smoothly.

[0014] Furthermore, the opening angle of the window sash frame relative to the window frame is ninety degrees.

[0015] Furthermore, the outer handle has an L-shaped plate structure, the inner handle is a square shaft handle, and both the outer handle and the inner handle are detachably fixed to the gear shaft of the gear transmission box.

[0016] Furthermore, the sag compensation structure includes a mounting plate and a guide plate. The mounting plate and the guide plate are fixedly installed to the window sash frame and the window frame, respectively. A guide wheel is connected to the bottom of one side of the mounting plate via a bearing. A lifting ramp is provided on the top of the guide plate corresponding to the guide wheel. The guide wheel rotates with the window sash frame and is guided by the lifting ramp provided on the guide wheel to reset the sag corner of the window sash frame.

[0017] Furthermore, wind braces are provided between the top and bottom surfaces of the inner wall of the window frame and the top and bottom surfaces of the outer wall of the window sash frame.

[0018] Furthermore, a sealing profile is fixedly installed in the hollow groove and to the window frame. Sealing strips are provided on both the left and right sides of the inner wall of the sealing profile. The outer handle is clamped and sealed between the two sealing strips, and one end of it passes through the sealing profile and is located outdoors.

[0019] The beneficial effects of this invention are: 1. Meets fire safety compliance requirements for two-way opening and closing: The two-way unlocking component with indoor and outdoor double handles is linked by a single gear transmission box. Only one transmission mechanism is needed to realize the unlocking and opening and closing operations on both the indoor and outdoor sides. It fully complies with the requirements of overseas fire safety regulations for the two-way opening of rescue windows. The structure is simple, the opening and closing synchronization is good, and the failure rate is low. At the same time, the outdoor handle is installed in a hidden manner, which does not affect the overall decorative uniformity of the building facade.

[0020] 2. Balancing heavy load-bearing capacity and wide opening angle requirements: The load-bearing opening system, which uses multiple sets of load-bearing hinge components in conjunction with wind braces, replaces the conventional sliding support structure. It can stably support large-division and heavy-weight window sashes, while achieving a full 90° opening of the window sash, meeting the passage and operation requirements of fire rescue platforms. This solves the industry pain point that conventional hardware cannot simultaneously meet the requirements of load-bearing capacity and opening angle.

[0021] 3. Concealed design balances aesthetics and durability: Hinges and locking mechanisms are concealed, with no exposed outdoor components, which fits the overall design requirements of the building facade; at the same time, it avoids direct exposure of hardware components to outdoor wind and rain, greatly reducing the risk of rust, aging and failure, and extending the overall service life of the window.

[0022] 4. Automatic tilt compensation ensures long-term stable operation: The tilt compensation structure, which works in conjunction with the guide wheel and the lifting ramp, automatically lifts and resets the tilted part during the closing process of the window sash. This completely solves the problems of inaccurate locking and difficult opening and closing caused by the tilt of the heavy window sash. At the same time, it ensures the long-term effectiveness of the window's sealing structure, eliminates the risk of rainwater leakage, and significantly improves the stability and safety of the window for long-term use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall planar structure of the present invention; Figure 2 This is a schematic diagram of the planar structure of the two-way unlocking component; Figure 3 A schematic diagram of the planar structure for the drop angle compensation structure; Figure 4 This is a schematic diagram of the planar structure of the gear transmission box. Figure 5 A schematic diagram of the load-bearing hinge assembly when the window sash frame is closed; Figure 6A structural diagram of the load-bearing hinge assembly when the window sash frame is opened; Figure 7 This is a schematic diagram of the sealing structure of the outer handle.

[0024] The attached diagram includes the following reference numerals: 1. Window frame; 2. Window sash frame; 3. Wind brace; 4. Load-bearing hinge assembly; 5. Angle compensation structure; 51. Mounting plate; 52. Guide wheel; 53. Guide plate; 6. Two-way unlocking assembly; 61. Transmission rod; 62. Inner handle; 63. Gear transmission box; 64. Outer handle; 65. Locking pin; 66. Stop block seat; 7. Window glass panel; 71. Hollowed-out groove; 8. Sealing profile; 9. Sealing strip. Detailed Implementation

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0027] This embodiment provides a double-sided opening casement window for fire rescue, which can be adapted to the use requirements of fire rescue scenarios on building curtain walls, while taking into account the overall aesthetics of the building facade, the stability of the window opening and closing, and the two-way operability for fire rescue.

[0028] like Figure 1 As shown, the fire rescue casement window in this embodiment includes a window frame 1 and a window sash frame 2. The window sash frame 2 is fitted inside the internal cavity of the window frame 1. Multiple sets of load-bearing hinge assemblies 4 are arranged at intervals along a vertical direction on one side of the window sash frame 2. The window frame 1 is hinged to the window sash frame 2 through these multiple sets of load-bearing hinge assemblies 4, allowing the window sash frame 2 to rotate relative to the window frame 1 around the pivot of the load-bearing hinge assemblies 4. In this embodiment, the maximum opening angle of the window sash frame 2 relative to the window frame 1 is ninety degrees, which fully meets the passage and operation requirements of the fire rescue platform. Wind braces 3 are provided between the top and bottom surfaces of the inner wall of the window frame 1 and the top and bottom surfaces of the outer wall of the window sash frame 2. The two ends of the wind braces 3 are hinged to the window frame 1 and the window sash frame 2 respectively, providing limiting and stable support when the window sash frame 2 is opened, preventing swaying and excessive rotation after opening, and improving the smoothness of the opening and closing process.

[0029] On the other side of the window sash frame 2 opposite to the load-bearing hinge assembly 4, and between the inner wall of the corresponding side of the window frame 1, a two-way unlocking assembly 6 is provided to realize the locking and unlocking between the window sash frame 2 and the window frame 1, and the unlocking operation can be completed from both the indoor and outdoor sides.

[0030] like Figure 2 , Figure 4 As shown, the two-way unlocking assembly 6 includes a gear transmission box 63, which is fixedly installed in the profile cavity of the window frame 2. A transmission rod 61 is fixedly installed at both the top and bottom of the gear transmission box 63. The transmission rod 61 is slidably connected to the profile surface of the window frame 2 and can reciprocate linearly along the vertical direction of the window frame 2. Multiple locking pins 65 are equidistantly arranged on the surface of the transmission rod 61 along its length. A stop block 66 is fixedly installed on the inner wall of the window frame 1 corresponding to the position of each locking pin 65. The locking pins 65 and the stop block 66 can cooperate to form a limiting lock.

[0031] An inner handle 62 and an outer handle 64 are fixedly installed at the inner and outer ends of the gear shaft of the gear transmission box 63, respectively. The inner handle 62 and the outer handle 64 share the same gear transmission mechanism in the gear transmission box 63. Twisting the inner handle 62 or the outer handle 64 can drive the gear shaft of the gear transmission box 63 to rotate, thereby driving the transmission rod 61 to slide.

[0032] Its core working principle is as follows: by twisting the inner handle 62 or the outer handle 64, the gear transmission box 63 is driven to drive the transmission rod 61 to slide in the vertical direction, so that the locking pin 65 on the transmission rod 61 coincides with or is vertically misaligned with the horizontal position of the stop seat 66; when the locking pin 65 coincides with the horizontal position of the stop seat 66, the locking pin 65 is blocked and limited by the stop seat 66, and the window frame 2 cannot rotate around the load-bearing hinge assembly 4, thereby locking the window frame 2 and the window frame 1; when the locking pin 65 is vertically misaligned with the stop seat 66, the locking pin 65 is released from the limiting constraint of the stop seat 66, and the window frame 2 can rotate freely around the load-bearing hinge assembly 4, thereby opening the window frame 2 and the window frame 1.

[0033] like Figure 1 , Figure 7As shown, a window glass panel 7 is fixedly installed on the outdoor side of the window sash frame 2. A perforated groove 71 is provided on the window glass panel 7 corresponding to the position of the outer handle 64. The outer handle 64 is hidden within this perforated groove 71, preventing it from protruding and disrupting the overall visual effect of the building facade. A sealing profile 8 is installed within the perforated groove 71, and is fixedly installed to the window sash frame 2. Sealing strips 9 are provided on both sides of the inner wall of the sealing profile 8. The outer handle 64 is clamped and sealed between the two sealing strips 9, with its operating end extending through the sealing profile 8 to the outdoor side. This design does not affect the twisting operation of the outer handle 64 from the outdoor side, and the sealing strips 9 and sealing profile 8 provide sealing protection at the position of the perforated groove 71, blocking the path of rainwater and dust penetration into the interior, and ensuring the water tightness and air tightness of the window.

[0034] In this embodiment, the outer handle 64 has an L-shaped plate structure, and the inner handle 62 is a square shaft handle. Both the outer handle 64 and the inner handle 62 are detachably and fixedly installed with the gear shaft of the gear transmission box 63, which facilitates on-site installation, subsequent maintenance and replacement of parts.

[0035] like Figure 3 As shown, a sag compensation structure 5 is provided between the bottom of the opening side of the window sash frame 2 and the inner wall of the window frame 1. This structure is used to reset the bottom sag angle when the window sash frame 2 is closed, ensuring that the window sash frame 2 can be closed smoothly. The sag compensation structure 5 includes a mounting plate 51 and a guide plate 53. The mounting plate 51 is fixedly installed to the window sash frame 2, and the guide plate 53 is fixedly installed to the window frame 1. The bottom of the mounting plate 51 facing the guide plate 53 is connected to a guide wheel 52 via a bearing. The top of the guide plate 53 is provided with a lifting slope corresponding to the movement trajectory of the guide wheel 52.

[0036] The working principle of the corner compensation structure 5 is as follows: When the window frame 2 rotates in the closing direction, the mounting plate 51 rotates synchronously with the window frame 2, driving the guide wheel 52 to move towards the guide plate 53. The guide wheel 52 first contacts the bottom end of the lifting slope. As the window frame 2 continues to rotate and close, the guide wheel 52 rolls upward along the lifting slope. Through the lifting force of the lifting slope, the corner of the window frame 2 that is drooping on the opening side is lifted upward and reset, eliminating the corner offset of the window frame 2. This ensures that the locking structure of the window frame 2 and the window frame 1 are precisely aligned, enabling the window frame 2 to close smoothly. At the same time, after the window frame 2 is completely closed, the guide wheel 52 and the guide plate 53 cooperate to form an auxiliary support, which can effectively alleviate the corner deformation problem of the window frame 2 after long-term use and extend the service life of the window.

[0037] The following describes the complete working process of the fire rescue casement window in this embodiment, taking into account the overall structure: 1. Locked state: Under normal conditions, the window frame 2 is in the closed state. Turn the inner handle 62 or the outer handle 64 to the locked position. The gear transmission box 63 drives the transmission rod 61 to slide, so that the locking pin 65 and the stop seat 66 are horizontally aligned. The locking pin 65 is limited by the stop seat 66, and the window frame 2 and the window frame 1 remain locked and cannot be opened. 2. Indoor opening operation: Twist the inner handle 62 on the indoor side, and drive the transmission rod 61 to slide through the gear transmission box 63, so that the locking pin 65 and the stop seat 66 are vertically misaligned, releasing the locking constraint. Pull inward or push outward to make the window frame 2 rotate around the load-bearing hinge assembly 4 to open. During the opening process, the wind brace 3 moves synchronously to provide opening limit and stable support. 3. Outdoor opening operation: Twist the outer handle 64 on the outdoor side, and drive the transmission rod 61 to slide through the gear transmission box 63 to complete the same unlocking action as indoor opening. Then, the window frame 2 can be pushed open from the outdoor side to meet the outdoor access requirements during fire rescue. 4. Closing and Angle Compensation: When the window frame 2 rotates in the closing direction, the guide wheel 52 of the angle compensation structure 5 rolls along the lifting slope of the guide plate 53, lifting up and resetting the corner of the fallen window frame 2, ensuring that the locking pin 65 and the stop block seat 66 are accurately aligned. After the window frame 2 is completely closed, the inner handle 62 or the outer handle 64 can be turned to re-lock.

[0038] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A double-sided opening casement window for fire rescue, comprising a window frame and a window sash frame, wherein the window sash frame is fitted inside the window frame, and a plurality of load-bearing hinge assemblies are arranged at intervals along a vertical direction on one side of the window sash frame, and the window sash frame is fixedly installed to the inner wall of the window frame by the plurality of load-bearing hinge assemblies, characterized in that, A two-way unlocking assembly is provided between the opposite side of the window sash frame and the inner wall of the opposite side of the window frame. The two-way unlocking assembly includes a gear transmission box, on which a transmission rod is fixedly installed at both the top and bottom. The transmission rod is slidably connected to the surface of the window sash frame. Multiple locking pins are equidistantly arranged on the surface of the transmission rod along its length. A stop block is fixedly installed on the inner wall of the window frame corresponding to each locking pin. An inner handle and an outer handle are fixedly installed at the inner and outer ends of the gear shaft of the gear transmission box, respectively. By twisting the inner handle or... The external handle drives the gear transmission box to move the transmission rod so that the horizontal position of the locking pin coincides with or the vertical position of the stop block seat, thereby locking or opening the window sash frame; a window glass panel is fixedly installed on the outdoor side of the window sash frame, and the window glass panel is provided with a hollow groove corresponding to the external handle, and the external handle is hidden in the hollow groove; a drop angle compensation structure is provided between the bottom of the opening side of the window sash frame and the inner wall of the window frame, which is used to reset the bottom drop angle when the window sash frame is closed, so as to close the window sash frame smoothly.

2. The indoor and outdoor double-sided opening fire rescue casement window according to claim 1, characterized in that, The opening angle of the window sash frame relative to the window frame is ninety degrees.

3. The indoor and outdoor double-sided opening fire rescue casement window according to claim 1, characterized in that, The outer handle has an L-shaped plate structure, and the inner handle is a square shaft handle. Both the outer handle and the inner handle are detachably and fixedly installed to the gear shaft of the gear transmission box.

4. The indoor and outdoor double-sided opening fire rescue casement window according to claim 1, characterized in that, The sagging angle compensation structure includes a mounting plate and a guide plate. The mounting plate and the guide plate are fixedly installed to the window sash frame and the window frame, respectively. A guide wheel is connected to the bottom bearing on one side of the mounting plate. A lifting ramp is provided on the top of the guide plate corresponding to the guide wheel. The guide wheel rotates with the window sash frame and is guided by the lifting ramp provided on the guide wheel to reset the sagging corner of the window sash frame.

5. The indoor and outdoor double-sided opening fire rescue casement window according to claim 1, characterized in that, Wind braces are provided between the top and bottom surfaces of the inner wall of the window frame and the top and bottom surfaces of the outer wall of the window sash frame.

6. The indoor and outdoor double-sided opening fire rescue casement window according to claim 1, characterized in that, A sealing profile is fixedly installed in the hollow groove and to the window frame. Sealing strips are provided on both the left and right sides of the inner wall of the sealing profile. The outer handle is clamped and sealed between the two sealing strips, and one end of it passes through the sealing profile and is located outdoors.

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