A light-weight quick-mount smoke door curtain device

Abstract

This utility model relates to the technical field of smoke-blocking devices for fire protection, specifically a lightweight, quick-installation smoke-blocking curtain device. It includes a curtain, a telescopic frame, and an adjusting rod structure. The telescopic frame includes a horizontal bar, with both ends connected to one end of a vertical bar. The horizontal bar can extend and retract along its length. The adjusting rod structure is located between the two vertical bars and includes a main rod, which is parallel to the horizontal bar. A lead screw is movably fitted inside the main rod, extending from one end of the main rod. An adjusting nut is threaded onto the lead screw. The end of the main rod extending away from the lead screw abuts against one vertical bar, and the end of the lead screw extending from the main rod abuts against another vertical bar. The top of the curtain is nested outside the horizontal bar, and the curtain is folded and hung on the horizontal bar. This application uses the adjusting nut to secure the main rod and the lead screw; loosening the adjusting nut allows for easy pulling and adjusting of the lead screw. The device is easy to operate, simple in structure, highly reliable, and low in manufacturing cost, facilitating rapid fire control and rescue.

Description

Technical Field

[0001] This utility model relates to the technical field of smoke-blocking devices for fire protection, specifically to a lightweight, quick-installation smoke-blocking curtain device. Background Technology

[0002] Smoke is one of the main factors causing casualties and property damage during a fire. Currently, smoke curtains are widely used in the fire protection field. Made of special materials, smoke curtains are flame-retardant, heat-resistant, and smoke-blocking. When a fire occurs, deploying the smoke curtain can effectively block smoke, control the spread of fire, and provide residents with escape routes and time.

[0003] The traditional smoke curtain structure mainly includes a roller, drive mechanism, and material fixing components. The selection of the roller needs to consider its load-bearing capacity and stability, the drive mechanism needs to ensure ease of operation and stability, and the material fixing needs to ensure the smoke curtain can be fully deployed. Installing the smoke curtain on a door or window allows the roller to be pulled to deploy the curtain in the event of a fire, thus sealing off the fire area, reducing the entry of fresh air and the spread of high-temperature smoke, and effectively controlling the fire. However, during a fire, due to the high temperatures, door and window frames may deform, preventing the curtain from deploying and retracting in time. This hinders fire control and makes it difficult for firefighters to enter and exit the fire area.

[0004] Patent document CN219539298U discloses a portable smoke-blocking device for fire emergency rescue, comprising a telescopic frame, a one-way limiting telescopic rod, and a fire-resistant curtain. The one-way limiting telescopic rod can push the telescopic frame to extend or retract to a width suitable for the door frame. The fire-resistant curtain is pressed and fixed to the door frame by the telescopic frame, effectively preventing smoke leakage and the entry of fresh air. This portable smoke-blocking device for fire emergency rescue disclosed in this patent is suitable for various types of door openings, facilitates on-site installation, and solves the problem of door curtains being unable to unfold or retract properly due to high-temperature deformation of doors and windows.

[0005] The aforementioned patent document describes a one-way limiting telescopic rod, comprising an inner rod and an outer rod that interlock. A one-way limiter is installed between the inner and outer rods, allowing the inner rod to be extended and retracted by operating the limiter. However, the one-way limiter has numerous parts, a complex structure, cumbersome operation, low structural reliability, and a high probability of component failure. This can range from affecting service life to preventing the timely and rapid extension and retraction of the inner rod, hindering rapid fire control and rescue efforts. Furthermore, the manufacturing cost of this structure is high. Utility Model Content

[0006] To address the technical problems of existing smoke-blocking curtain telescopic structures, such as numerous parts, complex structure, cumbersome operation, low structural reliability, high probability of part failure, and high manufacturing cost, this utility model provides a lightweight, quick-installation smoke-blocking curtain device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A lightweight, quick-installation smoke-blocking curtain device includes a curtain, a telescopic frame, and an adjusting rod structure. The telescopic frame includes a horizontal bar, both ends of which are connected to one end of a vertical bar. The horizontal bar can extend and retract along its length. The adjusting rod structure is located between the two vertical bars and includes a main rod, which is parallel to the horizontal bar. A lead screw is movably fitted inside the main rod and can slide along its length. The lead screw extends from one end of the main rod and is threaded with an adjusting nut. The end of the main rod extending away from the lead screw abuts against one vertical bar, and the end of the lead screw extending from the main rod abuts against another vertical bar. The top of the curtain is nested outside the horizontal bar, and the curtain is folded and hung on the horizontal bar.

[0009] Using the above structural design, the telescopic frame is first placed in the doorway. Then, the lead screw is quickly pulled out to stretch the main rod and lead screw, causing them to abut against the two longitudinal rods. During the pull-out of the lead screw, the crossbars extend, allowing the two longitudinal rods to abut against the sides of the doorway to accommodate its width. The folded curtain unfolds as the crossbars extend, at which point the sides of the curtain are sandwiched between the longitudinal rods and the doorway. Once the main rod and lead screw are stretched to their maximum extension, the adjusting nut on the lead screw is tightened, causing it to rest against the end face of the main rod. Simultaneously, the curtain is adjusted to prevent its sides from detaching from the longitudinal rods and the doorway without force. At this point, the telescopic frame and adjusting rod structure are fixed in the doorway. The curtain can also cover the doorway, isolating smoke and fire from the fire scene and controlling the spread of fire.

[0010] As described above, this utility model uses an adjusting nut to tighten the main rod and lead screw, thus fixing the length of the main rod and lead screw. Loosening the adjusting nut allows for arbitrary pulling of the lead screw. The adjustment and tightening operations are convenient, the structure is simple, the reliability is high, it is not easily damaged, the manufacturing cost is low, and it is conducive to quickly controlling the fire and rapid rescue.

[0011] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, the adjusting nut is a knurled nut.

[0012] With the above structural design, the outer wall of the knurled nut is rough, providing good anti-slip performance, making it convenient for users to tighten manually, and improving the tightening effect and efficiency.

[0013] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, a limiting post is installed at the end of the screw rod away from the main rod. The limiting post is coaxial with the screw rod, and the outer diameter of the limiting post is larger than that of the screw rod.

[0014] With the above structural design, the limiting post can prevent the adjusting nut from coming off the lead screw.

[0015] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, a rubber pad is connected to the end of the limiting post away from the lead screw.

[0016] With the above structural design, the limiting post needs to abut against the side wall of the longitudinal rod during use. The rubber pad can increase the anti-slip properties between the limiting post and the side wall of the longitudinal rod, and improve the stability of the adjusting rod structure during use.

[0017] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, an anti-loosening nut is fitted on the end of the lead screw away from the main rod.

[0018] With the above structural design, after tightening the adjusting nut, tighten the anti-loosening nut so that the anti-loosening nut abuts against the limiting post, preventing the lead screw from rotating on its own, thereby preventing loosening between the adjusting nut and the lead screw and improving the stability of the adjusting rod structure during use.

[0019] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, the crossbar includes a support rod, and a transverse telescopic rod is movably fitted inside the support rod. The transverse telescopic rod can slide along the length of the support rod. The transverse telescopic rod extends out from one end of the support rod. The end of the support rod away from the transverse telescopic rod is connected to one end of a longitudinal rod. The end of the transverse telescopic rod extending out of the support rod is connected to one end of another longitudinal rod.

[0020] The above structural design results in a simple and reliable telescopic structure for the crossbar.

[0021] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, the end of the longitudinal rod away from the horizontal rod is suspended, and a vertical telescopic rod is movably sleeved inside the longitudinal rod. The vertical telescopic rod can slide and extend along the length of the longitudinal rod, and the vertical telescopic rod extends out from the opening at the suspended end of the longitudinal rod.

[0022] With the above structural design, the side of the door curtain can be clamped between the vertical rod and the door opening. After the vertical telescopic rod extends and retracts, it can increase the contact area between the side of the door curtain and the door opening, thereby improving the sealing of the door curtain to the door opening.

[0023] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, the vertical telescopic rod has a sliding groove, which is opened along the length of the vertical telescopic rod. Shoulder screws are connected through the opposite side walls of the longitudinal rod. The shoulder screws are inserted into the sliding groove, and the shoulder part of the shoulder screw is located on the side of the sliding groove near the head of the shoulder screw.

[0024] Using the above structural design, the shoulder screw sequentially includes a head, a shoulder portion, and a screw rod. The screw rod portion, at the end furthest from the head, passes through a sliding groove and is threaded to the side wall of the longitudinal rod. The outer diameter of the shoulder portion of the shoulder screw is larger than the width of the sliding groove, and the shoulder portion cannot pass through the sliding groove. After extending the vertical telescopic rod out of the longitudinal rod to the required length, the shoulder screw is tightened. The edge of the shoulder portion of the shoulder screw gradually approaches the vertical telescopic rod until it abuts against it. The friction between the shoulder portion and the vertical telescopic rod effectively prevents the extension and retraction of the vertical telescopic rod. When it is necessary to extend or retract the vertical telescopic rod, the shoulder screw is loosened appropriately to allow the shoulder portion to leave the side wall surface of the vertical telescopic rod. The structure is simple, highly reliable, low-cost, and easy to operate.

[0025] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, the end of the vertical telescopic rod extending out of the longitudinal rod is connected to a lifting eye bolt.

[0026] With the above structural design, the eye bolt can be used as a pull ring, making it easy to pull the vertical telescopic rod.

[0027] As a preferred implementation of a lightweight, quick-installation smoke-blocking curtain device, the side wall of the longitudinal bar has a brake hole, and a brake screw is threaded into the brake hole; compared with the shoulder screw, the brake screw is closer to the crossbar.

[0028] With the above structural design, after the vertical telescopic rod is retracted into the longitudinal bar, tightening the brake screw will allow the brake screw to abut against the side wall of the vertical telescopic rod, thereby restricting the sliding of the vertical telescopic rod and facilitating storage and transportation.

[0029] The beneficial effects of this utility model include:

[0030] This invention uses an adjusting nut to tighten the main rod and lead screw, fixing their lengths. Loosening the adjusting nut allows for easy pulling of the lead screw. The adjustment and tightening operations are convenient, the structure is simple, the reliability is high, it is not easily damaged, the manufacturing cost is low, and it facilitates rapid fire control and quick rescue. Attached Figure Description

[0031] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of a lightweight quick-installation smoke-blocking door curtain device according to a specific embodiment of this utility model;

[0033] Figure 2 This is a front structural diagram of a lightweight quick-installation smoke-blocking door curtain device according to a specific embodiment of this utility model;

[0034] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of AA;

[0035] Figure 4 This is a schematic diagram of the door curtain when it is unfolded in a specific embodiment of this utility model.

[0036] List of components and reference numerals:

[0037] 1. Telescopic frame; 11. Horizontal bar; 111. Support bar; 112. Lateral telescopic bar; 12. Longitudinal bar; 13. Vertical telescopic bar; 131. Sliding groove; 14. Shoulder bolt; 15. Eye bolt; 16. Brake screw;

[0038] 2. Adjusting rod structure; 21. Main rod; 22. Lead screw; 23. Adjusting nut; 24. Limiting post; 25. Anti-loosening nut;

[0039] 3. Door curtain; 31. Curtain cover; 32. Short protruding edge; 33. Long protruding edge. Detailed Implementation

[0040] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] Reference Figure 1-3This embodiment proposes a lightweight, quick-installation smoke-blocking curtain device, including a curtain 3, a telescopic frame 1, and an adjusting rod structure 2. The telescopic frame 1 includes a horizontal bar 11, with both ends of the horizontal bar 11 connected to one end of a vertical bar 12. The horizontal bar 11 includes a support rod 111, and a transverse telescopic rod 112 is movably fitted inside the support rod 111. The transverse telescopic rod 112 can slide along the length direction of the support rod 111. The transverse telescopic rod 112 extends out from one end of the support rod 111. The end of the support rod 111 away from the transverse telescopic rod 112 is connected to one end of a vertical bar 12, and the end of the transverse telescopic rod 112 extending out of the support rod 111 is connected to one end of another vertical bar 12. Thus, the horizontal bar 11 can extend and retract along its length direction, which is the axial direction. The end of the longitudinal rod 12 furthest from the horizontal rod 11 is suspended. A vertical telescopic rod 13 is movably fitted inside the longitudinal rod 12, and the vertical telescopic rod 13 can slide and extend along the length of the longitudinal rod 12. The vertical telescopic rod 13 extends from the opening at the furthest end of the longitudinal rod 12. A lifting eye bolt 15 is connected to the end of the vertical telescopic rod 13 extending from the longitudinal rod 12. The vertical telescopic rod 13 has a sliding groove 113, which is opened along the length of the vertical telescopic rod 13. Shoulder screws 14 are connected through the opposite side walls of the longitudinal rod 12. The shoulder screws 14 pass through the sliding groove 113, and the shoulder portion of the shoulder screws 14 is located on the side of the sliding groove 113 near the head of the shoulder screws 14. A brake hole is opened on the side wall of the longitudinal rod 12, and a brake screw 16 is threaded into the brake hole; compared to the shoulder screw 14, the brake screw 16 is closer to the horizontal rod 11.

[0042] The adjusting rod structure 2 is located between two longitudinal rods 12. The adjusting rod structure 2 includes a main rod 21, which is parallel to the cross rod 11. A lead screw 22 is movably sleeved inside the main rod 21, allowing it to slide along the length of the main rod 21. The lead screw 22 extends from one end of the main rod 21, and an adjusting nut 23 (knurled nut) is threaded onto it. The end of the main rod 21 extending away from the lead screw 22 abuts against one longitudinal rod 12, and the end of the lead screw 22 extending out of the main rod 21 abuts against the other longitudinal rod 12. A limiting post 24 is installed at the end of the lead screw 22 away from the main rod 21. The limiting post 24 is coaxial with the lead screw 22, and its outer diameter is larger than that of the lead screw 22. A rubber pad is connected to the end of the limiting post 24 away from the lead screw 22. An anti-loosening nut 25 is fitted onto the end of the lead screw 22 away from the main rod 21.

[0043] The top of the curtain 3 is provided with a curtain sleeve 31, which is formed by rolling the top of the curtain 3 into a cylindrical shape and then sewing it. The curtain sleeve 31 has openings at both ends to facilitate the passage of the horizontal bar 11. The curtain sleeve 31 is nested inside the horizontal bar 11. The curtain 3 is folded and hung on the horizontal bar 11, and can be unfolded as the horizontal bar 11 extends. The curtain 3 has short protruding edges 32 on both sides along the length of the horizontal bar 11. The short protruding edges 32 facilitate clamping between the vertical bar 12 and the door opening, and between the vertical telescopic bar 13 and the door opening. The curtain 3 also has long protruding edges 33 on both sides along the length of the horizontal bar 11. The long protruding edges 33 are located below the short protruding edges 32, and the long protruding edges 33 and short protruding edges 32 are set separately. To clearly illustrate the telescopic frame 1 and the adjusting rod structure 2, this embodiment is attached with reference to the following: Figure 1-3 The curtain is omitted in the middle.

[0044] The working principle of this embodiment is as follows:

[0045] In use, first place the telescopic frame 1 in the doorway, then quickly pull out the lead screw 22 to stretch the main rod 21 and the lead screw 22, so that the main rod 21 and the lead screw 22 respectively abut against the two vertical rods 12. During the pulling out of the lead screw 22, it drives the horizontal rod 11 to extend, so that the two vertical rods 12 abut against the sides of the doorway to adapt to the width of the doorway. The folded curtain 3 will unfold as the horizontal rod 11 extends. At this time, the short protruding edge 32 of the curtain 3 is completely clamped between the vertical rod 12 and the doorway, and the long protruding edge 3... The edge of the curtain 3 is sandwiched between the longitudinal rod 12 and the doorway. After the main rod 21 and the lead screw 22 are stretched to their maximum extension, the adjusting nut 23 on the lead screw 22 is tightened by rotating it, so that the adjusting nut 23 abuts against the end face of the main rod 21. At the same time, the curtain 3 is adjusted to prevent the short protruding edge 32 of the curtain 3 from coming out of the gap between the longitudinal rod 12 and the doorway, and to prevent the long protruding edge 33 from coming out of the gap between the longitudinal rod 12 and the doorway when no force is applied. At this point, the telescopic frame 1 and the adjusting rod structure 2 have been fixed in the doorway. Tighten the anti-loosening nut 25 so that the anti-loosening nut 25 abuts against the limiting post 24 to prevent the lead screw 22 from loosening, and thus to prevent the lead screw 22 and the adjusting nut 23 from loosening. Finally, tidy up the door curtain 3, loosen the brake screw 16 and the shoulder screw 14, pull down the eye bolt 15, and pull the vertical telescopic rod 13 out from the bottom end of the longitudinal rod 12. When pulling it out, clamp the edge of the long protruding edge 33 between the vertical telescopic rod 13 and the doorway. After the vertical telescopic rods 13 on both sides are pulled out to their maximum length or abut against the bottom of the doorway, tighten the shoulder screw 14. The door curtain 3 will then firmly cover the doorway, isolating smoke and fire at the fire scene and controlling the spread of fire. When firefighters need to enter or exit, they can pull the long protruding edge 33 out from between the longitudinal rod 12 and the doorway, and between the vertical telescopic rod 13 and the doorway, to open the door curtain 3.

[0046] In this embodiment, for easy handling, the end of the main rod 21 away from the protruding end of the lead screw 22 can be hinged to a longitudinal rod 12, so that the main rod 21 can rotate up and down to unfold and store.

[0047] Reference Figure 1 and Figure 2 This embodiment is applicable to single door openings of different widths and lengths, and is generally used for common partition doors. If a double door opening is encountered, other specially adapted smoke curtains are required. Therefore, firefighters need to make measurements and estimates in advance before use to prevent the smoke curtain from being incompatible with the door opening at the rescue site.

[0048] In this embodiment, when firefighters enter the fire scene, they need to straighten the curtain 3 in advance. The folded curtain 3 will unfold as the horizontal bar 11 extends, thereby preventing the curtain 3 from wrinkling and affecting the smoke-blocking and sealing effect. When pulling out the threaded rod 22, the force should be even, and excessive force should be avoided to prevent damage to the equipment. At the same time, it is also necessary to avoid the phenomenon that the extension and retraction of the curtain 3 cannot keep up with the extension and retraction of the overall mechanism.

[0049] In this embodiment, when tightening the adjusting nut 23, the tightening force should be about 80% of the normal force. Then, arrange the curtain 3 to seal the door opening, then lay the curtain 3 flat, pull down the vertical telescopic rods 13 on both sides, and smooth the two sides of the curtain 3 so that the two sides of the curtain 3 are sandwiched between the vertical telescopic rods 13 and the door opening, thus achieving a good sealing effect.

[0050] In this embodiment, anti-slip components, such as rubber strips, can be provided on the sides of the two vertical rods 12 that are away from each other to increase the friction between the vertical rods 12, the short protruding edge 32 of the curtain 3 and the door opening, and to prevent slippage.

[0051] In this embodiment, the telescopic length of the crossbar 11 is adapted to most door openings and will not be pulled out into two halves due to an excessively large door opening.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lightweight, quick-installation smoke-blocking door curtain device, comprising a door curtain (3), a telescopic frame (1), and an adjusting rod structure (2), wherein the telescopic frame (1) comprises a horizontal bar (11), both ends of which are respectively connected to one end of a vertical bar (12), the horizontal bar (11) being able to extend and retract along its length, and the adjusting rod structure (2) being located between the two vertical bars (12), characterized in that, The adjusting rod structure (2) includes a main rod (21), which is parallel to the crossbar (11). A screw rod (22) is movably sleeved inside the main rod (21). The screw rod (22) can slide along the length of the main rod (21). The screw rod (22) extends out from one end of the main rod (21). An adjusting nut (23) is threaded onto the screw rod (22). The end of the main rod (21) that extends away from the screw rod (22) abuts against a vertical rod (12). The end of the screw rod (22) that extends out of the main rod (21) abuts against another vertical rod (12). The top of the curtain (3) is nested outside the crossbar (11). The curtain (3) is folded and hung on the crossbar (11).

2. The lightweight, quick-installation smoke-blocking curtain device according to claim 1, characterized in that, The adjusting nut (23) is a knurled nut.

3. The lightweight, quick-installation smoke-blocking curtain device according to claim 1, characterized in that, A limit post (24) is installed at the end of the lead screw (22) away from the main rod (21). The limit post (24) is coaxial with the lead screw (22), and the outer diameter of the limit post (24) is larger than that of the lead screw (22).

4. A lightweight, quick-installation smoke-blocking curtain device according to claim 3, characterized in that, A rubber pad is connected to the end of the limiting post (24) away from the lead screw (22).

5. A lightweight, quick-installation smoke-blocking curtain device according to claim 3, characterized in that, The end of the lead screw (22) away from the main rod (21) is fitted with an anti-loosening nut (25).

6. A lightweight, quick-installation smoke-blocking curtain device according to claim 1, characterized in that, The crossbar (11) includes a support rod (111), and a transverse telescopic rod (112) is movably sleeved inside the support rod (111). The transverse telescopic rod (112) can slide along the length direction of the support rod (111). The transverse telescopic rod (112) extends out from one end of the support rod (111). The end of the support rod (111) away from the transverse telescopic rod (112) is connected to one end of a longitudinal rod (12). The end of the transverse telescopic rod (112) extending out from the support rod (111) is connected to one end of another longitudinal rod (12).

7. A lightweight, quick-installation smoke-blocking curtain device according to claim 1 or 6, characterized in that, The end of the longitudinal bar (12) away from the horizontal bar (11) is suspended. A vertical telescopic bar (13) is movably sleeved inside the longitudinal bar (12). The vertical telescopic bar (13) can slide and extend along the length of the longitudinal bar (12). The vertical telescopic bar (13) extends out from the opening at the suspended end of the longitudinal bar (12).

8. A lightweight, quick-installation smoke-blocking curtain device according to claim 7, characterized in that, The vertical telescopic rod (13) has a sliding groove (113) along the length of the vertical telescopic rod (13). The opposite side walls of the longitudinal rod (12) are connected by shoulder screws (14). The shoulder screws (14) are inserted in the sliding groove (113). The shoulder part of the shoulder screw (14) is located on the side of the sliding groove (113) near the head of the shoulder screw (14).

9. A lightweight, quick-installation smoke-blocking curtain device according to claim 7, characterized in that, The end of the vertical telescopic rod (13) extending out of the longitudinal rod (12) is connected to a lifting eye bolt (15).

10. A lightweight, quick-installation smoke-blocking curtain device according to claim 8, characterized in that, The side wall of the longitudinal bar (12) has a brake hole, and a brake screw (16) is threaded into the brake hole; compared with the shoulder screw (14), the brake screw (16) is closer to the cross bar (11).

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