A retractable smoke curtain
By utilizing the telescopic mechanism and elastic limit design of the retractable smoke curtain, the problem of fixed installation position of the smoke curtain is solved, achieving effective smoke blocking during fires and saving space in daily life, thus improving the flexibility and adaptability of smoke blocking materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI KAISHEN FIRE FIGHTING EQUIP INSTALLATION CO LTD
- Filing Date
- 2025-06-21
- Publication Date
- 2026-05-26
AI Technical Summary
The existing smoke curtains have fixed installation positions, and their length and position cannot be adjusted according to actual needs, which limits their flexibility and effectiveness. They may not be able to effectively block smoke during a fire and may cause space waste during daily use.
It adopts a telescopic design, which realizes the position adjustment and self-locking function of the smoke-blocking material through the telescopic mechanism and the elastic limit mechanism. The telescopic adjustment is realized by the cooperation of the screw and the slider, and the stability and smoothness are improved by the combination of guide groove and guide block.
It effectively blocks smoke during fires, can be retracted to save space during daily use, improves the flexibility and adaptability of smoke-blocking materials, and ensures positional stability through a self-locking function.
Smart Images
Figure CN224269964U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of smoke curtain technology, and more particularly to a retractable smoke curtain. Background Technology
[0002] Smoke curtains, as an important fire protection facility in buildings, are usually made of non-expandable materials, such as metal plates or glass. Currently, they are mostly installed in a fixed manner, and their length and position cannot be adjusted after installation.
[0003] Existing smoke curtains are mostly installed in fixed positions and lack adjustment functions, making it impossible to adjust their length and position according to actual needs. This limits their flexibility and effectiveness to some extent, and may not be able to effectively block smoke during a fire, and may also cause a waste of space during daily use.
[0004] Therefore, this application provides a retractable smoke curtain. Utility Model Content
[0005] To address the shortcomings of existing technologies, this application provides a retractable smoke curtain that overcomes these deficiencies. It aims to solve the problem that existing smoke curtains often have fixed installation positions and lack adjustment capabilities, preventing the length and position from being adjusted according to actual needs. This limits their flexibility and effectiveness, potentially failing to effectively block smoke during a fire and wasting space during daily use.
[0006] To achieve the above objectives, this application provides the following technical solution: a retractable smoke curtain, comprising a fixed frame, wherein a telescopic mechanism is provided inside the fixed frame, the telescopic mechanism comprising a first telescopic section, the first telescopic section being fixedly installed inside the fixed frame, a second telescopic section being slidably connected inside the first telescopic section, both the first and second telescopic sections having two sets of slide rails formed inside each, sliders being slidably connected to the slide rails, and a first spring being installed at the top of each slider, the first spring being installed at the top of the telescopic mechanism, the second telescopic section being slidably connected to the first telescopic section via two sets of sliders located inside the first telescopic section, a screw being threadedly connected to the bottom of the first telescopic section below one set of sliders, a stop block being rotatably connected to the top of the screw, an elastic limiting mechanism being provided on one side of the bottom of each set of the first telescopic section below one set of sliders, and a third telescopic section being slidably connected inside the second telescopic section, the bottom end of the third telescopic section being provided with smoke-blocking material.
[0007] By adopting the above technical solution, the device is fixedly installed on the top of the building using a mounting bracket. In the event of a fire, rotating the screw at the bottom of the second expansion joint downwards causes the slider to pull the first spring to extend under the action of gravity. The third expansion joint slides downwards through two sets of sliders, thereby moving the smoke-blocking material downwards to effectively block the smoke. The sliding adjustment of the second expansion joint is similar. The expansion mechanism allows for telescopic adjustment, which is beneficial for adjusting the position of the smoke-blocking material according to actual needs. At the same time, the screw thread and the use of the elastic limit mechanism can achieve a self-locking function. In daily use, rotating the screw upwards pushes the slider to rise, allowing it to retract to a smaller volume, thereby saving building space. The telescopic mechanism improves the flexibility and adaptability of the smoke-blocking material.
[0008] As a preferred technical solution of this application, the elastic limiting mechanism includes two sets of second springs, both sets of second springs are installed inside the slider, and a groove matching the second spring is opened on one side of the slider. A locking block is installed on the side of the two sets of second springs away from the slider. The inner walls of the first telescopic joint and the second telescopic joint are each provided with several sets of locking grooves matching the locking block.
[0009] By adopting the above technical solution, when the slider moves down, the locking block continuously contracts and extends under the elastic action of the second spring, engaging with several sets of locking slots until the position of the smoke-blocking material is adjusted. Then, the locking block is locked at the corresponding locking position, locking the position of the slider. At the same time, the screw is rotated to make the stop block lock at the groove, restricting the locking block and improving the stability after the guide groove is adjusted.
[0010] As a preferred technical solution of this application, a guide block is fixedly installed between the slider and the second telescopic joint, and a guide groove matching the guide block is opened on the inner wall of the first telescopic joint.
[0011] By adopting the above technical solution, the slider moves up and down, and the linkage guide block slides in the guide groove. At the same time, the guide block moves along the direction of the guide groove to guide the slider, thereby improving the stability of the slider movement.
[0012] As a preferred technical solution of this application, both the first spring and the second spring are provided with telescopic guide rods inside.
[0013] By adopting the above technical solution, the telescopic guide rod plays a guiding role when the corresponding first or second spring elastically expands and contracts, which helps to improve the service life of the first or second spring.
[0014] As a preferred technical solution of this application, two sets of rectangular blocks are symmetrically arranged at the bottom end of the third expansion joint, the smoke-blocking material is located between the two sets of rectangular blocks, and the smoke-blocking material is connected to the rectangular blocks by several sets of bolts.
[0015] By adopting the above technical solution, the smoke-blocking material and rectangular block can be easily installed and removed using several sets of bolts, thus facilitating the replacement and maintenance of the smoke-blocking material.
[0016] As a preferred technical solution of this application, a handle is fixedly installed on the outer surface of the third telescopic joint.
[0017] By adopting the above technical solution, the first and second telescopic sections can be finely adjusted upwards using the handle, which improves the practicality during use.
[0018] As a preferred embodiment of this application, a rotating handle is fixedly installed at the bottom of the screw.
[0019] By adopting the above technical solution, the rotating handle provides a convenient point of action for the hand when rotating the screw, thus improving the convenience of adjusting the screw.
[0020] As a preferred technical solution of this application, a limiting block is fixedly installed inside the slider below the second spring, and the top of the abutment block is provided with a chamfer.
[0021] By adopting the above technical solution, the position of the stop block is restricted by the limiting block to prevent the stop block from contacting the second spring and causing damage. The chamfer facilitates the smooth entry of the stop block into the groove.
[0022] The beneficial effects of this application are:
[0023] 1. Fixed to the top of the building via a mounting bracket, in the event of a fire, rotating the screw at the bottom of the second expansion joint downwards causes the slider to pull the first spring to extend under gravity. The third expansion joint slides downwards via two sets of sliders, thereby moving the smoke-blocking material downwards to effectively block smoke. The sliding adjustment of the second expansion joint works similarly. The expansion mechanism allows for adjustment of the smoke-blocking material's position according to actual needs. Furthermore, the screw's thread and the use of an elastic limiting mechanism enable a self-locking function. In daily use, rotating the screw upwards pushes the slider to rise, allowing it to retract to a smaller volume, thus saving building space. The expansion mechanism enhances the flexibility and adaptability of the smoke-blocking material.
[0024] 2. As the slider moves downward, the locking block, under the elastic action of the second spring, continuously contracts and extends to engage with several sets of locking slots until the position of the smoke-blocking material is adjusted. At the same time, the locking block locks the position of the slider at the corresponding locking position. Simultaneously, the screw is rotated to make the stop block lock in the groove, restricting the locking block and improving the stability of the guide groove after adjustment. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the internal structure of this application;
[0026] Figure 2 This is a schematic diagram of the telescopic mechanism.
[0027] Figure 3 This is a partial structural diagram of this application;
[0028] Figure 4 This is a schematic diagram of the elastic limit mechanism.
[0029] In the diagram: 1. Fixed frame; 2. Telescopic mechanism; 201. First telescopic joint; 202. Second telescopic joint; 203. Slide rail; 204. Slider; 205. First spring; 206. Third telescopic joint; 207. Screw; 208. Abutment block; 3. Elastic limiting mechanism; 301. Second spring; 302. Groove; 303. Locking block; 304. Locking slot; 4. Smoke-blocking material; 5. Guide block; 6. Guide groove; 7. Telescopic guide rod; 8. Rectangular block; 9. Bolt; 10. Handle; 11. Limiting block; 12. Rotating handle; 13. Chamfer. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] Reference Figure 1-4A retractable smoke curtain includes a fixed frame 1, with a telescopic mechanism 2 inside the fixed frame 1. The telescopic mechanism 2 includes a first telescopic section 201, which is fixedly installed inside the fixed frame 1. A second telescopic section 202 is slidably connected inside the first telescopic section 201. Both the first and second telescopic sections 201 and 202 have two sets of slide rails 203 inside. Slider blocks 204 are slidably connected to the slide rails 203. A first spring 205 is installed at the top of each slider 204. The first spring 205 is installed at the top of the telescopic mechanism 2. The second telescopic section 202 is connected to the two sets of slide rails 203 inside the first telescopic section 201. The slider 204 is slidably connected to the first telescopic section 201. The bottom of the first telescopic section 201 is threadedly connected to a screw 207 located below one set of sliders 204. The top of the screw 207 is rotatably connected to a stop block 208. Each set of first telescopic sections 201 is provided with an elastic limiting mechanism 3 on one side of one set of sliders 204. The second telescopic section 202 is slidably connected to a third telescopic section 206. The bottom of the third telescopic section 206 is provided with a smoke-blocking material 4. A guide block 5 is fixedly installed between the slider 204 and the second telescopic section 202. The inner wall of the first telescopic section 201 is provided with a guide groove 6 that matches the guide block 5.
[0032] Fixed to the top of the building by the mounting bracket 1, in the event of a fire, the screw 207 at the bottom of the second telescopic section 202 is rotated downwards, causing the slider 204 to pull the first spring 205 to extend under the action of gravity. The third telescopic section 206 slides downwards through the two sets of sliders 204, thereby moving the smoke-blocking material 4 downwards to effectively block the smoke. The sliding adjustment of the second telescopic section 202 is similar. The telescopic mechanism 2 can be used for telescopic adjustment, which is beneficial to adjust the position of the smoke-blocking material 4 according to actual needs. At the same time, under the action of the screw 207 thread and in conjunction with the use of the elastic limit mechanism 3, a self-locking function can be achieved. In daily use, rotating the screw 207 upwards will push the slider 204 to rise, which can shrink to a smaller volume, thereby saving building space. The telescopic mechanism 2 improves the flexibility and adaptability of the smoke-blocking material 4. As the slider 204 moves up and down, the linkage guide block 5 slides in the guide groove 6. At the same time, the guide block 5 moves along the direction of the guide groove 6 to guide the slider 204, improving the stability of the slider 204 during movement.
[0033] Reference Figure 2-4The elastic limiting mechanism 3 includes two sets of second springs 301, both sets of second springs 301 are installed inside the slider 204, and a groove 302 matching the second spring 301 is opened on one side of the slider 204. A locking block 303 is installed on the side of the two sets of second springs 301 away from the slider 204. Several sets of locking slots 304 matching the locking block 303 are opened on the inner walls of the first telescopic joint 201 and the second telescopic joint 202. Telescopic guide rods 7 are provided inside the first spring 205 and the second spring 301.
[0034] As the slider 204 moves downward, the locking block 303, under the elastic action of the second spring 301, continuously contracts and extends, engaging with several sets of locking slots 304 until the position of the smoke-blocking material 4 is adjusted. Then, the locking block 303 locks into the corresponding locking block 303, locking the position of the slider 204. Simultaneously, rotating the screw 207 causes the abutment 208 to engage in the groove 302, restricting the locking block 303 and improving the stability of the guide groove 6 after adjustment. The telescopic guide rod 7 guides the elastic extension and retraction of the corresponding first spring 205 or second spring 301, which helps to extend the service life of the first spring 205 or second spring 301.
[0035] Reference Figure 1-3 Two sets of rectangular blocks 8 are symmetrically arranged at the bottom end of the third telescopic section 206. The smoke-blocking material 4 is located between the two sets of rectangular blocks 8. Several sets of bolts 9 connect the smoke-blocking material 4 and the rectangular blocks 8. A rotating handle 12 is fixedly installed at the bottom of the screw 207. The several sets of bolts 9 facilitate the installation and removal of the smoke-blocking material 4 and the rectangular blocks 8, thereby facilitating the replacement and maintenance of the smoke-blocking material 4. The rotating handle 12 provides a hand action point when rotating the screw 207, improving the convenience of adjusting the screw 207.
[0036] Reference Figure 1-3 A handle 10 is fixedly installed on the outer surface of the third telescopic joint 206; a limiting block 11 is fixedly installed inside the slider 204 below the second spring 301, and a chamfer 13 is provided on the top of the abutment block 208; the handle 10 can be used to make slight upward adjustments to the first telescopic joint 201 and the second telescopic joint 202, improving the practicality during use; the limiting block 11 restricts the position of the abutment block 208 to prevent the abutment block 208 from contacting the second spring 301 and causing damage, and the chamfer 13 facilitates the smooth entry of the abutment block 208 into the groove 302.
[0037] Working principle: The device is fixedly installed on the top of the building via a mounting bracket 1. In the event of a fire, rotating the screw 207 at the bottom of the second telescopic section 202 downwards causes the slider 204 to extend the first spring 205 under gravity. The third telescopic section 206 slides downwards via the two sets of sliders 204, thereby moving the smoke-blocking material 4 downwards to effectively block smoke. The sliding adjustment of the second telescopic section 202 works similarly. The telescopic mechanism 2 allows for telescopic adjustment, enabling the smoke-blocking material 4 to be positioned according to actual needs. Furthermore, the screw 207's thread action, combined with the elastic limiting mechanism 3, achieves a self-locking function. In daily use... Rotating the screw 207 upwards pushes the slider 204 upwards, allowing it to retract to a smaller volume, thus saving building space. The telescopic mechanism 2 improves the flexibility and adaptability of the smoke-blocking material 4. As the slider 204 moves downwards, the locking block 303, under the elastic action of the second spring 301, continuously contracts and extends, engaging with several sets of locking slots 304 until the position of the smoke-blocking material 4 is adjusted. Then, the locking block 303 locks in the corresponding locking block 303, locking the position of the slider 204. At the same time, rotating the screw 207 causes the abutment 208 to lock in the groove 302, restricting the locking block 303 and improving the stability of the guide groove 6 after adjustment.
[0038] Among them, by moving the slider 204 up and down, the linkage guide block 5 slides at the guide groove 6. At the same time, the guide block 5 moves along the direction of the guide groove 6 to guide the slider 204, which improves the stability of the slider 204 when it moves. The telescopic guide rod 7 plays a guiding role when the corresponding first spring 205 or second spring 301 is elastically stretched and contracted, which is conducive to improving the service life of the first spring 205 or second spring 301.
[0039] Meanwhile, the smoke-blocking material 4 and the rectangular block 8 can be easily installed and removed by several sets of bolts 9, which facilitates the replacement and maintenance of the smoke-blocking material 4; the first expansion joint 201 and the second expansion joint 202 can be finely adjusted upward by the handle 10, which improves the practicality during use;
[0040] In addition, the rotating handle 12 provides a hand action point when rotating the screw 207, improving the convenience of adjusting the screw 207; the limiting block 11 restricts the position of the abutment 208 to prevent the abutment 208 from contacting the second spring 301 and causing damage; the chamfer 13 facilitates the smooth entry of the abutment 208 into the groove 302.
[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A retractable smoke curtain, comprising a fixing frame (1), characterized in that, The fixed frame (1) is provided with a telescopic mechanism (2) inside. The telescopic mechanism (2) includes a first telescopic section (201), which is fixedly installed inside the fixed frame (1). A second telescopic section (202) is slidably connected inside the first telescopic section (201). Both the first telescopic section (201) and the second telescopic section (202) have two sets of slide rails (203) inside. A slider (204) is slidably connected to the slide rail (203). A first spring (205) is installed at the top of each slider (204). The first spring (205) is installed at the top of the telescopic mechanism (2). The telescopic section (202) is slidably connected to the first telescopic section (201) through two sets of sliders (204) located inside the first telescopic section (201). The bottom of the first telescopic section (201) is threadedly connected to a screw (207) below one of the sets of sliders (204). The top of the screw (207) is rotatably connected to a stop block (208). Each set of the first telescopic section (201) is provided with an elastic limiting mechanism (3) on one side of one set of sliders (204). The second telescopic section (202) is slidably connected to a third telescopic section (206). The bottom of the third telescopic section (206) is provided with smoke-blocking material (4).
2. A retractable smoke screen curtain according to claim 1, characterized in that The elastic limiting mechanism (3) includes two sets of second springs (301). Both sets of second springs (301) are installed inside the slider (204). A groove (302) matching the second spring (301) is opened on one side of the slider (204). A locking block (303) is installed on the side of the two sets of second springs (301) away from the slider (204). The inner walls of the first telescopic joint (201) and the second telescopic joint (202) are each provided with several sets of slots (304) matching the locking block (303).
3. The retractable smoke screen curtain according to claim 1, wherein A guide block (5) is fixedly installed between the slider (204) and the second telescopic joint (202), and a guide groove (6) matching the guide block (5) is provided on the inner wall of the first telescopic joint (201).
4. A retractable smoke screen curtain according to claim 2, wherein, Both the first spring (205) and the second spring (301) are provided with telescopic guide rods (7).
5. The retractable smoke screen curtain according to claim 1, wherein The bottom end of the third expansion joint (206) is symmetrically provided with two sets of rectangular blocks (8), the smoke-blocking material (4) is located between the two sets of rectangular blocks (8), and the smoke-blocking material (4) is connected to the rectangular blocks (8) by several sets of bolts (9).
6. A retractable smoke screen curtain according to claim 1, wherein A handle (10) is fixedly installed on the outer surface of the third expansion joint (206).
7. The retractable smoke screen curtain according to claim 1, wherein A rotating handle (12) is fixedly installed at the bottom of the screw (207).
8. A retractable smoke screen curtain according to claim 2, wherein, The slider (204) is located below the second spring (301) and a limiting block (11) is fixedly installed inside it. The top of the abutment (208) is provided with a chamfer (13).