Tightly-closed fireproof door roller shutter

Abstract

The utility model relates to the technical field of fireproof doors, and discloses a tightly-closed fireproof door roller shutter which comprises a storage box, guide rail frames are fixedly connected to the left side and the right side of the bottom end of the storage box, sealing mechanisms are fixedly connected to the inner walls of the rear sides of the guide rail frames, and mounting mechanisms are fixedly connected to the outer portions of the guide rail frames. The sealing mechanism comprises a fixing block, the rear end of the fixing block is fixedly connected to the inner wall of the rear side of the guide rail frame, a double-end air cylinder is fixedly connected to the interior of the fixing block, the driving end of the double-end air cylinder is fixedly connected with two connecting blocks, and openings are formed in the sides, away from each other, of the two connecting blocks. According to the fire resisting shutter, the pressing plate rotates to press the sliding block, so that the sliding block is further tightly attached to the sealing strip, the multi-stage transmission sealing structure can effectively prevent air, smoke and the like from passing through a gap between the fire resisting shutter and the guide rail frame, and good sealing performance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a fire door roller shutter that closes tightly. Background Technology

[0002] Fire doors are essential fire-resistant doors in buildings, playing a crucial role in fire separation. They can prevent the spread of fire for a certain period, providing valuable time for evacuation and fire rescue. Fire doors are typically made of special materials, such as fire-resistant wood, steel, or other composite materials. Their structural design also contributes to fire resistance, with components like door frames and door panels that offer excellent sealing. Fire doors are classified into different grades based on their fire resistance rating to meet the fire protection requirements of various locations. In some large buildings or commercial spaces, in addition to ordinary fire doors, there are special forms such as fire-resistant roller shutters, which achieve fire separation through a unique structure and working principle.

[0003] Fire-resistant roller shutters are fire-resistant and heat-insulating facilities suitable for large openings in buildings. They typically consist of curtain panels, rollers, motors, guide rails, supports, protective covers, and control mechanisms. They can meet fire resistance stability and integrity requirements along with their frame for a certain period, thus serving as fireproof and fire-resistant barriers.

[0004] During a fire, smoke and flames spread extremely rapidly. Traditional fire door roller shutters often have gaps due to imperfect sealing structures. For example, if there is no effective seal between the fire door roller shutter and the guide rail, smoke can quickly spread to other areas through these gaps, posing a significant threat to personnel evacuation and property protection. Therefore, a tightly closing fire door roller shutter is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a tightly closed fireproof roller shutter, which aims to improve the problem in the prior art where the lack of an effective sealing structure between the fireproof roller shutter and the guide rail in some fireproof roller shutter doors allows smoke to quickly spread to other areas through these gaps.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fireproof door roller shutter that closes tightly includes a storage box. Guide rails are fixedly connected to the left and right sides of the bottom of the storage box. A sealing mechanism is fixedly connected to the inner rear wall of the guide rails. An installation mechanism is fixedly connected to the outside of the guide rails.

[0008] The sealing mechanism includes a fixing block, the rear end of which is fixedly connected to the rear inner wall of the guide rail frame. A double-headed cylinder is fixedly connected inside the fixing block. Two connecting blocks are fixedly connected to the drive end of the double-headed cylinder. An opening is provided on the far side of each of the two connecting blocks. A fixing rod is fixedly connected inside the opening. A rotating plate is rotatably connected to the outside of the fixing rod. A transmission plate is rotatably connected to the front end of each of the two rotating plates. A rotating rod is fixedly connected to the far side of each of the two transmission plates. A rotating block is rotatably connected to the outside of the rotating rod. A pressure plate is fixedly connected to the front end of the rotating block.

[0009] As a further description of the above technical solution:

[0010] The mounting mechanism includes multiple mounting brackets, the inner walls of which are fixedly connected to the outer wall of the guide rail frame. The mounting brackets have circular holes inside, and bolts are rotatably connected to the inner walls of the circular holes. A sealing plate is fixedly connected to the rear end of the guide rail frame, and multiple mounting plates are fixedly connected to the opposite sides of the two sealing plates respectively.

[0011] As a further description of the above technical solution:

[0012] A motor housing is fixedly connected to the right side of the storage box. A motor is fixedly connected inside the motor housing. A retractable shaft is fixedly connected to the drive end of the motor. A fireproof roller shutter is fixedly connected to the outside of the retractable shaft. Multiple sliders are fixedly connected to the left and right sides of the fireproof roller shutter.

[0013] As a further description of the above technical solution:

[0014] A sealing strip is fixedly connected to the inner front wall of the guide rail frame, and the rear side of the sealing strip contacts the front side of the plurality of sliders;

[0015] As a further description of the above technical solution:

[0016] The upper and lower inner walls of the fixed block are fixedly connected to support rods, and the inner wall of the transmission plate is rotatably connected to the outer wall of the support rods.

[0017] As a further description of the above technical solution:

[0018] The rear side of the slider contacts the front side of the pressure plate, and the outer walls of the plurality of sliders are slidably connected to the inner wall of the guide rail frame.

[0019] As a further description of the above technical solution:

[0020] The rear side of the mounting bracket contacts the front side of the mounting plate, and the outer side of the bolt is engaged with the inner side of the mounting plate.

[0021] As a further description of the above technical solution:

[0022] The two connecting blocks are externally slidably connected to the inside of the fixed block, and the externally retractable shaft is externally rotatably connected to the inside of the storage box.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the motor inside the motor housing drives the retracting shaft to rotate, causing the slider on the fireproof roller shutter to slide into position within the guide rail frame. Then, the double-headed cylinder inside the fixing block generates power, which, through the transmission of the connecting block, fixing rod, and rotating plate, and in conjunction with the action of the support rod, transmission plate, and rotating block, finally causes the pressure plate to rotate and press the slider tightly, making the slider and the sealing strip even more tightly fitted. This multi-stage transmission sealing structure can effectively prevent air, smoke, etc., from passing through the gap between the fireproof roller shutter and the guide rail frame, ensuring good sealing performance.

[0025] 2. In this utility model, the mounting bracket securely fixes the guide rail frame to the wall surface through the engagement of bolts and mounting plate, making the entire fire door roller shutter structure stable and less prone to shaking or displacement, thus reliably performing its fireproof function during long-term use. While the bolts and mounting plate engage to fix the frame, they also compress the sealing plate, filling the gap between the guide rail frame and the wall surface, thereby preventing external substances from entering through the connection between the guide rail frame and the wall surface, further improving the overall sealing performance. Attached Figure Description

[0026] Figure 1 This is a perspective view of a fire door roller shutter with a tight closure proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a fireproof roller shutter for a tightly closed fireproof door according to the present invention.

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Storage box; 2. Motor enclosure; 3. Fireproof roller shutter; 4. Guide rail frame; 5. Fixing block; 6. Double-headed cylinder; 7. Connecting block; 8. Fixing rod; 9. Rotating plate; 10. Transmission plate; 11. Support rod; 12. Rotating rod; 13. Rotating block; 14. Pressure plate; 15. Sliding block; 16. Sealing strip; 17. Sealing plate; 18. Mounting bracket; 19. Bolt; 20. Mounting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 3 The present invention provides an embodiment of a fireproof door roller shutter that is designed for tight closure, comprising a storage box 1. Guide rails 4 are fixedly connected to the left and right sides of the bottom of the storage box 1. A sealing mechanism is fixedly connected to the inner rear wall of the guide rails 4, and an installation mechanism is fixedly connected to the outside of the guide rails 4. The storage box 1 is an important component of the entire fireproof door roller shutter, providing storage space for internal components. The guide rails 4 are connected to the left and right sides of its bottom, allowing the entire structure to be fixed in the corresponding positions, providing a stable frame foundation for the opening and closing of the fireproof roller shutter 3.

[0034] The sealing mechanism includes a fixed block 5, the rear end of which is fixedly connected to the inner rear wall of the guide rail frame 4. A double-headed cylinder 6 is fixedly connected inside the fixed block 5. Two connecting blocks 7 are fixedly connected to the drive end of the double-headed cylinder 6. The two connecting blocks 7 are slidably connected to the inside of the fixed block 5. The fixed block 5 provides a fixed installation position for the double-headed cylinder 6 and is a fundamental component of the sealing mechanism, enabling the double-headed cylinder 6 to work stably and providing a stable starting support point for the movement of the sealing component. Openings are provided on opposite sides of the two connecting blocks 7, and fixed rods 8 are fixedly connected inside these openings. The connecting blocks 7 receive power from the double-headed cylinder 6 and move up and down while sliding inside the fixed block 5, transmitting the power of the double-headed cylinder 6 to the fixed rods 8. A rotating plate 9 is rotatably connected to the outside of the fixed rods 8. The fixed rods 8 provide a support point for the rotation of the rotating plate 9. When the connecting blocks 7 move up and down, the rotating plate 9 can rotate around the fixed rods 8 as an axis, providing the supporting basis for the rotation of the rotating plate 9 and ensuring its stable rotation. Both rotating plates 9 are rotatably connected to transmission plates 10 at their front ends. When the connecting block 7 moves up and down, the rotating plates 9 rotate with the fixed rods 8 as support, converting the up-and-down movement of the connecting block 7 into the rotational power of the transmission plates 10. This plays a crucial bridging role in the power transmission and conversion process of the sealing mechanism. Support rods 11 are fixedly connected to the inner walls of both the upper and lower sides of the fixed block 5. The inner wall of the transmission plate 10 is rotatably connected to the outer wall of the support rods 11, providing rotational support for the transmission plate 10. Rotating rods 12 are fixedly connected to the opposite sides of both transmission plates 10. A rotating block 13 is rotatably connected to the outside of the rotating rod 12, and a pressure plate 14 is fixedly connected to the front end of the rotating block 13. The rotating block 13 rotates under the drive of the rotating rods 12, thereby driving the pressure plate 14 to rotate. This is a key conversion component that converts the rotational power of the rotating rods 12 into the rotational power of the pressure plate 14.

[0035] The right side of the storage box 1 is fixedly connected to the motor housing 2. The motor housing 2 is fixedly connected to the motor. The drive end of the motor is fixedly connected to the retraction shaft. The motor inside the motor housing 2 is the power source. The motor drives the retraction shaft to rotate and is the starting power provider for the entire fireproof roller shutter 3 retraction action. The motor housing 2 plays a role in protecting the motor, preventing external factors from damaging the motor, and ensuring that the motor can work stably. The external rotating shaft is rotatably connected to the inside of the storage box 1, and the fireproof roller shutter 3 is fixedly connected to the outside of the rotating shaft. The rotating shaft connects the motor and the fireproof roller shutter 3, and rotates under the drive of the motor. This rotation drives the movement of the fireproof roller shutter 3. The rotating shaft transmits the power of the motor to the key components of the fireproof roller shutter 3. Multiple sliders 15 are fixedly connected to the left and right sides of the fireproof roller shutter 3, respectively. The outer walls of the multiple sliders 15 are slidably connected to the inner wall of the guide rail frame 4. The rear side of the slider 15 contacts the front side of the pressure plate 14. The pressure plate 14 rotates under the drive of the rotating block 13, pressing the slider 15 tightly. This pressing action makes the slider 15 and the sealing strip 16 fit more tightly, thereby strengthening the sealing performance. It is the direct execution component for realizing the sealing enhancement function. The sealing strip 16 is fixedly connected to the inner wall of the front side of the guide rail frame 4, and the rear side of the sealing strip 16 contacts the front side of the multiple sliders 15. During the opening and closing of the fireproof roller shutter 3, the slider 15 slides smoothly along the inner wall of the guide rail frame 4, which plays a role in guiding the movement direction of the fireproof roller shutter 3. When the fireproof roller shutter 3 is closed, the slider 15 cooperates with the pressure plate 14 and the sealing strip 16 to enhance the sealing performance.

[0036] Reference Figure 1 , Figure 2 and Figure 4 The installation mechanism includes multiple mounting brackets 18, the inner walls of which are fixedly connected to the outer wall of the guide rail frame 4. Each mounting bracket 18 has a circular hole inside, and bolts 19 are rotatably connected to the inner wall of the hole. A sealing plate 17 is fixedly connected to the rear end of the guide rail frame 4, and multiple mounting plates 20 are fixedly connected to the opposite sides of the two sealing plates 17. The rear side of the mounting bracket 18 contacts the front side of the mounting plate 20. During installation, the mounting bracket 18 presses against the sealing plate 17, filling the gap between the guide rail frame 4 and the wall, thereby strengthening the seal between the guide rail frame 4 and the wall and improving the overall sealing effect of the fire door roller shutter. The outer side of the bolts 19 is engaged with the inner side of the mounting plates 20. The mounting brackets 18 connect the guide rail frame 4 and the wall, and the guide rail frame 4 is fixed to the wall by the engagement of the bolts 19 in the internal circular holes with the mounting plates 20. The mounting plate 20 connects to the sealing plate 17 and engages with the bolt 19, providing an engagement point for the bolt 19. It works with the mounting bracket 18 to fix the guide rail bracket 4 and also serves as the support for fixing the sealing plate 17. It is an important component of the mounting mechanism for achieving both fixing and sealing functions.

[0037] Working principle: By opening the motor in the motor housing 2, the retractable shaft is rotated, which in turn causes the slider 15 on the fireproof roller shutter 3 to slide within the guide rail frame 4. When the fireproof roller shutter 3 completely closes the fireproof door, the double-headed cylinder 6 in the fixing block 5 is activated to generate power to drive the connecting block 7 to move up and down. The up and down movement of the connecting block 7, in conjunction with the support of the fixing rod 8, drives the rotating plate 9 to rotate. The rotation of the rotating plate 9, in conjunction with the support of the support rod 11, drives the transmission plate 10 to rotate. The rotation of the transmission plate 10, in conjunction with the connection of the rotating block 13, drives the pressure plate 14 to rotate. The rotation of the pressure plate 14 presses the slider 15 tightly, achieving a tighter fit between the slider 15 and the sealing strip 16, thereby enhancing the sealing performance.

[0038] The mounting bracket 18 is used to press the guide rail bracket 4 firmly against the wall. Then, the bolt 19 in the round hole on the mounting bracket 18 is rotated. The bolt 19 engages with the mounting plate 20, which connects the mounting bracket 18 and the mounting plate 20 and fixes the guide rail bracket 4 to the wall. At the same time, the sealing plate 17 is squeezed during the installation and fixing process. The squeezed sealing plate 17 fills the gap between the guide rail bracket 4 and the wall, thereby enhancing the sealing between the guide rail bracket 4 and the wall.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fire door shutter comprising a housing (1) characterized in that: Both left and right sides of the bottom end of the storage box (1) are fixedly connected with guide rail frames (4), the rear inner wall of the guide rail frame (4) is fixedly connected with a sealing mechanism, and the outer portion of the guide rail frame (4) is fixedly connected with a mounting mechanism. The sealing mechanism comprises a fixed block (5), the rear end of the fixed block (5) is fixedly connected to the rear inner wall of the guide rail frame (4), the inner portion of the fixed block (5) is fixedly connected with a double-head air cylinder (6), the driving end of the double-head air cylinder (6) is fixedly connected with two connecting blocks (7), the far side of the two connecting blocks (7) is provided with an opening, the inner portion of the opening is fixedly connected with a fixed rod (8), the outer portion of the fixed rod (8) is rotatably connected with a rotating plate (9), the front end of the two rotating plates (9) is rotatably connected with a transmission plate (10), the far side of the two transmission plates (10) is fixedly connected with a rotating rod (12), the outer portion of the rotating rod (12) is rotatably connected with a rotating block (13), and the front end of the rotating block (13) is fixedly connected with a pressing plate (14).

2. A fire door shutter according to claim 1, wherein: The mounting mechanism comprises a plurality of mounting frames (18), the inner wall of the mounting frame (18) is fixedly connected to the outer wall of the guide rail frame (4), the inner portion of the mounting frame (18) is provided with a circular hole, the inner wall of the circular hole is rotatably connected with a bolt (19), the rear end of the guide rail frame (4) is fixedly connected with a sealing plate (17), and the far side of the two sealing plates (17) is respectively fixedly connected with a plurality of mounting plates (20).

3. A fire door shutter according to claim 1, wherein: The right side of the storage box (1) is fixedly connected with a motor package box (2), the inner portion of the motor package box (2) is fixedly connected with a motor, the driving end of the motor is fixedly connected with a retractable shaft body, the outer portion of the retractable shaft body is fixedly connected with a fireproof roller shutter (3), and the left and right sides of the fireproof roller shutter (3) are respectively fixedly connected with a plurality of sliding blocks (15).

4. A fire door shutter according to claim 3, wherein: The front inner wall of the guide rail frame (4) is fixedly connected with a sealing strip (16), and the rear side of the sealing strip (16) is in contact with the front side of the plurality of sliding blocks (15).

5. A fire door shutter according to claim 1, wherein: The inner wall of the fixed block (5) is rotatably connected with the outer wall of the transmission plate (10).

6. A fire door roller shutter according to claim 3, wherein: The rear side of the sliding block (15) is in contact with the front side of the pressing plate (14), and the outer wall of the plurality of sliding blocks (15) is slidably connected to the inner wall of the guide rail frame (4).

7. A fire door roller shutter according to claim 2, wherein: The rear side of the mounting frame (18) is in contact with the front side of the mounting plate (20), and the outer portion of the bolt (19) is in meshing connection with the inner portion of the mounting plate (20).

8. A fire door roller shutter according to claim 3, wherein: The outer portion of the retractable shaft body is rotatably connected to the inner portion of the storage box (1).

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