A fall-preventing limiting device for an in-curtain wall casement window
By designing limiting devices for components such as sliding guide rails and plug-in plates in the casement windows inside the curtain wall, the problem of windows being difficult to fix in strong winds, leading to damage and falling, has been solved, and safe fixation has been achieved in severe weather.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO TENGYUAN DESIGN ACCOUNTANTS CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-03
Smart Images

Figure CN224452504U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of curtain wall technology, and in particular to a fall-prevention device for limiting the opening of an inward-opening casement window in a curtain wall. Background Technology
[0002] A curtain wall is a non-load-bearing exterior wall cladding for a building. It is a lightweight wall structure commonly used in modern large and high-rise buildings, often with decorative effects, and consists of panels and a supporting structural system. Existing domestic curtain wall inward-opening casement windows have many common problems. The window frame and curtain wall joists are separated, resulting in a wider viewing area and poor aesthetics between the interior and exterior. Furthermore, excessive use of the open window position occupies interior space, causing inconvenience to users. Additionally, due to the weight of the glass and the overall weight of the window frame, the requirements for the opening hardware are high, leading to frequent hardware damage and increased maintenance costs.
[0003] A search revealed that prior art CN208137748U discloses a unitized curtain wall internal casement window structure, including a curtain wall body. The curtain wall body consists of curtain wall glass, side window components disposed on the sides of the curtain wall glass, and a handle lock disposed in the middle of the side window components. A connecting column is provided on one side of the side glass panel, and a side window frame and window sash are provided on the side of the connecting column. Utilizing the curtain wall's shape features, the window sash structure is designed within the side wall openings of the curtain wall. The window sash uses a single openable material instead of the traditional double-frame and embedded glass structure, greatly reducing the window's self-weight, reducing the load on the hardware, and improving the service life of the opening hardware. At the same time, it makes it easy and convenient for users to operate the switch, providing significant assistance.
[0004] However, the above-mentioned curtain wall structure has the following problems when in use: it is difficult to fix the windows when they are open, making the windows easy to be blown by strong winds, resulting in damage to the windows and glass. After the windows and glass are damaged, they are prone to falling from a height, which is unsafe. Summary of the Invention
[0005] The purpose of this utility model is to provide a fall-prevention curtain wall casement window limiting device, which aims to solve the problem that in the existing curtain wall structure, it is difficult to fix the window when it is open, making the window easy to be blown by strong winds, resulting in damage to the window and glass, and the window and glass are prone to falling from a height, which is unsafe.
[0006] To achieve the above objectives, this utility model provides a fall-prevention curtain wall casement window limiting device, including a window frame, a curtain wall component rotatably mounted on the outside of the window frame, and a limiting component;
[0007] The limiting assembly includes a sliding guide rail, a slider, a connecting bracket, a plug-in plate, a limiting frame, a first plug rod, a second plug rod, a locking component, and a stabilizing component. The sliding guide rail is installed in the clearance cavity on the outside of the window frame. The slider can slide linearly on the sliding guide rail, and the slider does not disengage from the sliding guide rail when the curtain wall assembly is opened to its maximum position. The connecting bracket is rotatably connected to the curtain wall assembly and the slider respectively. The plug-in plate is detachably connected to the slider through the locking component and is slidably connected to the window frame and the sliding guide rail respectively. The first plug rod is symmetrically arranged at the top of the limiting frame, and the second plug rod is symmetrically arranged at the bottom. The first plug rod can be inserted into multiple positioning holes at the top of the window frame, and the second plug rod can be inserted into the through hole at the bottom of the T-shaped groove on the plug-in plate, and the stabilizing component is screwed on at the bottom.
[0008] The curtain wall assembly includes a rectangular frame and a curtain wall body. The rectangular frame is hinged to one side of the window frame and its bottom is rotatably connected to the connecting bracket. The curtain wall body is disposed on the rectangular frame.
[0009] A handle is also detachably installed on the rectangular frame.
[0010] The locking component includes a positioning pin and a tensioning bolt. The positioning pin is slidably connected to the slider and the plug plate respectively, and passes through the plug plate. The tensioning bolt is slidably connected to the plug plate, passes through the plug plate, and is threadedly connected to the slider.
[0011] The stabilizing component is an external hexagonal nut, which is threaded to the stepped end of the external thread at the bottom of the second insertion rod and abuts against the bottom of the insertion plate.
[0012] This utility model discloses a fall-prevention curtain wall casement window limiting device. When opening the curtain wall assembly, first remove the stabilizer, then remove the limiting frame, and then the curtain wall assembly can be opened. When the curtain wall opens, the connecting bracket will drive the slider to slide, and the slider will drive the plug-in plate to slide. Finally, after it is in place, the limiting frame is plugged into the window frame and the plug-in plate respectively through the first plug and the second plug. Then the stabilizer is installed, so that the plug-in plate can be limited by the limiting frame, the first plug and the second plug. The limiting of the plug-in plate will limit the slider, thereby fixing the opening angle of the window. This prevents the window from being damaged and falling in windy weather. In this way, it can solve the problem in the existing curtain wall structure that it is difficult to fix the window when it is open, making the window easy to be blown by strong winds, resulting in damage to the window and glass, and the risk of the window and glass falling from a height, which is unsafe. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0014] Figure 1 This is a schematic diagram of the overall structure of the anti-fall curtain wall casement window limiting device of this utility model.
[0015] Figure 2 This is a schematic diagram of the sliding guide rail of this utility model.
[0016] Figure 3 This is a structural schematic diagram of the limiting frame of this utility model.
[0017] Figure 4 This is a schematic diagram of the plug-in board of this utility model.
[0018] In the diagram: 101-Window frame, 102-Sliding guide rail, 103-Slider, 104-Connecting bracket, 105-Plug-in plate, 106-Limiting bracket, 107-First plug rod, 108-Second plug rod, 109-Stabilizing component, 110-Rectangular frame, 111-Curtain wall body, 112-Handle, 113-Positioning pin, 114-Tightening bolt. Detailed Implementation
[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0020] like Figures 1 to 4 As shown, where Figure 1 This is a schematic diagram of the overall structure of the anti-fall device for the internal casement window limiter in the curtain wall. Figure 2 This is a schematic diagram of the sliding guide rail 102. Figure 3 This is a structural schematic diagram of the limit bracket 106. Figure 4 This is a structural schematic diagram of the plug-in plate 105. This utility model provides a fall-prevention curtain wall casement window limiting device: it includes a window frame 101, a curtain wall assembly, and a limiting assembly. The limiting assembly includes a sliding guide rail 102, a slider 103, a connecting bracket 104, a plug-in plate 105, a limiting frame 106, a first plug rod 107, a second plug rod 108, a locking component, and a stabilizing component 109. The curtain wall assembly includes a rectangular frame 110 and a curtain wall body 111. The locking component includes a positioning pin 113 and a tension bolt 114. This solution addresses the problem in existing curtain wall structures where windows are difficult to secure when open, making them susceptible to being blown away by strong winds, leading to damage to the windows and glass. Damaged windows and glass can easily fall from heights, posing a safety hazard. This solution can better prevent curtain wall falls in windy weather, improving safety.
[0021] In this embodiment, a curtain wall assembly is rotatably mounted on the outer side of the window frame 101.
[0022] The sliding guide rail 102 is installed in the clearance cavity outside the window frame 101. The slider 103 can slide linearly on the sliding guide rail 102, and the slider 103 does not disengage from the sliding guide rail 102 when the curtain wall assembly is opened to the maximum position. The connecting bracket 104 is rotatably connected to the curtain wall assembly and the slider 103 respectively. The plug plate 105 is detachably connected to the slider 103 through the locking member, and is slidably connected to the window frame 101 and the sliding guide rail 102 respectively. The limiting bracket 106 is symmetrically provided with the first plug rod 107 at the top and the second plug rod 108 symmetrically provided at the bottom. The first plug rod 107 can be inserted into multiple positioning holes at the top of the window frame 101. The second plug rod 108 can be inserted into the through hole provided at the bottom of the T-shaped groove on the plug plate 105, and the stabilizing member 109 is screwed on at the bottom. The sliding guide rail 102 is fixed to the window frame 101 by countersunk bolts and is provided with a T-shaped groove to facilitate the sliding of the T-shaped slider 103. The top of the slider 103 and the bottom of the rectangular frame 110 are respectively connected to the connecting bracket 104 by countersunk threaded pins, which allows the connecting bracket 104 to rotate. A rectangular insertion cavity is provided on one side of the slider 103 to facilitate the insertion of the outer end of the insertion plate 105. Two through holes are provided on the outer end of the insertion plate 105 for locking. The components are designed to fit together. Guide rectangular grooves with the same thickness are respectively provided on the sliding guide rail 102 and the window frame 101. A non-penetrating T-shaped groove is vertically formed downwards on the inner end of the plug-in plate 105, with a through hole at the bottom of the T-shaped groove to facilitate the insertion and installation of the T-shaped portion at the bottom of the limiting bracket 106. Multiple insertion holes are spaced at intervals on the top of the window frame 101 for inserting the first insertion rod 107. The second insertion rod 108 is symmetrically arranged on the T-shaped portion at the bottom of the limiting bracket 106. The stabilizing component 109 is used to improve the stability of the limiting bracket 106 after installation.
[0023] Secondly, the rectangular frame 110 is hinged to one side of the window frame 101, and its bottom is rotatably connected to the connecting bracket 104; the curtain wall body 111 is disposed on the rectangular frame 110. The curtain wall body 111 is disposed inside the rectangular frame 110.
[0024] Then, a handle 112 is also detachably installed on the rectangular frame 110. The handle 112 facilitates the opening and closing operation of the rectangular frame 110.
[0025] Furthermore, the positioning pin 113 is slidably connected to the slider 103 and the plug-in plate 105 respectively, and passes through the plug-in plate 105; the tensioning bolt 114 is slidably connected to the plug-in plate 105, passes through the plug-in plate 105, and is threadedly connected to the slider 103. The positioning pin 113 has a threaded hole at the top, which facilitates disassembly by engaging the threaded pin with a pin puller. The tensioning bolt 114 has a T-shaped structure and a stepped external thread end at the bottom, which is used to fix the end of the plug-in plate 105 that engages with the slider 103. Both the positioning pin 113 and the tensioning bolt 114 are countersunk, which helps to avoid interfering with the storage of the connecting bracket 104 when the curtain wall body 111 is closed.
[0026] Finally, the stabilizer 109 uses an external hexagonal nut and is threadedly connected to the stepped end of the external thread at the bottom of the second insert rod 108, and abuts against the bottom of the insert plate 105. After the stabilizer 109 is installed, it can stably set the limiting bracket 106 on the insert plate 105 and the window frame 101, thus achieving stable positioning of the insert plate 105.
[0027] When using this utility model to better prevent curtain wall collapse and improve safety in windy weather, to open the curtain wall assembly, first remove the stabilizer 109, then remove the limiting bracket 106, and then the curtain wall assembly can be opened. When the curtain wall body 111 is opened, the connecting bracket 104 will drive the slider 103 to slide, and the sliding of the slider 103 will drive the plug-in plate 105 to slide. Finally, after opening to the desired position and being in place, the limiting bracket 106 is plugged into the window frame 101 and the plug-in plate 105 respectively through the first plug 107 and the second plug 108, and then installed. The aforementioned stabilizer 109 allows the plug plate 105 to be limited by the limiting bracket 106, the first plug rod 107, the second plug rod 108, and the stabilizer 109. The limiting of the plug plate 105 will limit the slider 103, thereby fixing the opening angle of the window and preventing damage to the window due to its inability to be fixed in windy weather. This also solves the problem in existing curtain wall structures where windows are difficult to fix when open, making them easily blown by strong winds and causing damage to the window and glass. Damaged windows and glass are prone to falling from heights, posing a safety hazard.
[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A fall-prevention device for limiting the opening of an inward-opening casement window in a curtain wall, comprising a window frame, wherein a curtain wall component is rotatably mounted on the outer side of the window frame, characterized in that: It also includes limit components; The limiting assembly includes a sliding guide rail, a slider, a connecting bracket, a plug-in plate, a limiting frame, a first plug rod, a second plug rod, a locking component, and a stabilizing component. The sliding guide rail is installed in the clearance cavity on the outside of the window frame. The slider can slide linearly on the sliding guide rail, and the slider does not disengage from the sliding guide rail when the curtain wall assembly is opened to its maximum position. The connecting bracket is rotatably connected to the curtain wall assembly and the slider respectively. The plug-in plate is detachably connected to the slider through the locking component and is slidably connected to the window frame and the sliding guide rail respectively. The first plug rod is symmetrically arranged at the top of the limiting frame, and the second plug rod is symmetrically arranged at the bottom. The first plug rod can be inserted into multiple positioning holes at the top of the window frame, and the second plug rod can be inserted into the through hole at the bottom of the T-shaped groove on the plug-in plate, and the stabilizing component is screwed on at the bottom.
2. The anti-fall curtain wall casement window limiting device as described in claim 1, characterized in that: The curtain wall assembly includes a rectangular frame and a curtain wall body. The rectangular frame is hinged to one side of the window frame and its bottom is rotatably connected to the connecting bracket. The curtain wall body is mounted on the rectangular frame.
3. The anti-fall curtain wall casement window limiting device as described in claim 2, characterized in that: A handle is also detachably installed on the rectangular frame.
4. The anti-fall curtain wall casement window limiting device as described in claim 1, characterized in that: The locking component includes a positioning pin and a tensioning bolt. The positioning pin is slidably connected to the slider and the plug plate respectively, and passes through the plug plate. The tensioning bolt is slidably connected to the plug plate, passes through the plug plate, and is threadedly connected to the slider.
5. The fall arrestable curtain wall casement window limiting device of claim 1, wherein : The stabilizing component is an external hexagonal nut, which is threaded to the stepped end of the external thread at the bottom of the second insertion rod and abuts against the bottom of the insertion plate.