Movable telescopic fire door

Abstract

The application provides a movable telescopic fireproof door, which comprises a door panel, a door leaf, a left upper movable frame, a right upper movable frame, a left lower movable frame, a right lower movable frame, an adjusting mechanism and universal wheels; the bottom of the door panel is provided with the universal wheels, so that the fireproof door is convenient to move on the ground; the four top corners of the door panel are respectively provided with the L-shaped left upper movable frame, the right upper movable frame, the left lower movable frame and the right lower movable frame; the four movable frames are driven to move to the left upper side, the right upper side, the left lower side and the right lower side respectively through the adjusting mechanism, so that the four movable frames are fixed to the left and right walls, the ceiling and the ground of the corridor to fix the fireproof door, and the four movable frames are blocked in the gaps between the door panel and the ceiling, the left and right walls and the ground to block the smoke and the fire; the fireproof door can realize space compression on the fire area, prevent the fire from spreading and control the fire loss in the minimum range as much as possible.

Description

Technical Field

[0001] This invention relates to the field of fire protection technology, and in particular to a movable telescopic fire door. Background Technology

[0002] Fire doors are doors that can meet fire resistance and insulation requirements for a certain period of time. They are typically installed in fire-resistant compartments, evacuation stairwells, and vertical shafts to prevent the spread of fire. Existing fire doors are usually fixed and can only block the spread of fire within a fixed area. In apartment buildings, apartment doors are often not fire doors; fire doors are only located in evacuation stairwells. When a fire breaks out in one apartment in a stairwell, the fire can easily spread along the stairwell, causing greater economic losses and personal injury. Summary of the Invention

[0003] In view of this, the present invention aims to provide a movable telescopic fire door that can be easily moved to the vicinity of the initial ignition point, compressing the space of the fire area, effectively preventing the spread of fire, and minimizing fire losses as much as possible.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] A movable telescopic fire door includes a door panel, a door leaf, an upper left movable frame, an upper right movable frame, a lower left movable frame, a lower right movable frame, an adjustment mechanism, and casters;

[0006] The door panel has a door leaf in the middle, an outer frame around the door panel, and casters at the bottom. There is a gap between the top of the outer frame and the ceiling, gaps between the left and right sides of the outer frame and the left and right walls, and a gap between the bottom of the outer frame and the ground. These gaps facilitate the movement of the fire door.

[0007] The door panel has L-shaped upper left, upper right, lower left, and lower right movable frames at its four top corners. The door panel also has adjustment mechanisms to move these four frames to the upper left, upper right, lower left, and lower right respectively, allowing them to rest against the left and right walls, ceiling, and floor of the corridor. These frames also block gaps between the door panel and the ceiling, walls, and floor to prevent smoke and fire. One end of the upper left movable frame overlaps with one end of the upper right movable frame, the other end overlaps with one end of the lower left movable frame, the other end overlaps with one end of the lower right movable frame, and the other end overlaps with one end of the lower right movable frame. This overlapping arrangement increases the blocking area and reduces gaps when the movable frames are unfolded.

[0008] Furthermore, the door panel is provided with slide rails extending towards the upper left, upper right, lower left, and lower right respectively, and the four movable frames are each provided with a slide groove that slides on the slide rails.

[0009] Furthermore, both the upper left and upper right movable frames are provided with two sliding grooves, namely a short sliding groove and a first corner sliding groove. The short sliding groove connects the horizontal sections of the upper left and upper right movable frames, and the first corner sliding groove connects the angle between the upper left and upper right movable frames.

[0010] Furthermore, a second corner slide groove is provided on both the lower left and lower right movable frames, and the second corner slide groove is connected at the angle between the lower left and lower right movable frames.

[0011] Furthermore, there are two adjustment mechanisms, located on the left and right sides of the door panel respectively, with one adjustment mechanism simultaneously driving the upper and lower movable frames.

[0012] Furthermore, the adjustment mechanism includes a drive assembly and a ratchet pawl. The drive assembly includes a first gear and a second gear. Upper racks extending towards the upper left and upper right are respectively provided on the upper left and upper right movable frames, while lower racks extending towards the lower left and lower right are respectively provided on the lower left and lower right movable frames. Both the upper and lower racks are slidably mounted on the door panel. The first gear and the second gear are rotatably mounted between the upper and lower racks on the same side. The lower surface of the upper rack has a lower tooth segment that meshes with the first gear; the upper surface of the lower rack has an upper tooth segment that meshes with the second gear. The first gear and the second gear are directly or indirectly connected. The upper surface of the upper rack has a ratchet segment, and a ratchet pawl that cooperates with the ratchet segment is provided on the door panel.

[0013] Furthermore, the drive assembly also includes a third gear, a fourth gear, a fifth gear, a sixth gear, and a handwheel. The third gear is fixed to the outside of the first gear, and the diameter of the third gear is larger than that of the first gear. The fourth gear is fixed to the outside of the second gear, and the diameter of the fourth gear is larger than that of the second gear. The fifth gear and the sixth gear are disposed between the third gear and the fourth gear, and the fifth gear and the sixth gear mesh with each other. The third gear meshes with the fifth gear, and the fourth gear meshes with the sixth gear. A handwheel is also provided on the fifth gear or the sixth gear.

[0014] Furthermore, seals are provided on the side walls where the four movable frames contact the left and right walls, ceiling, and floor.

[0015] Furthermore, all four movable frames have identical structures. Each movable frame has a connector at both ends, which includes a first stop bar and a second stop bar. The length of the first stop bar is shorter than the length of the second stop bar. One end of both the first and second stop bars is integrally connected to the end of the movable frame, and the first and second stop bars are perpendicular to each other to form a U-shaped groove. The surface of the first stop bar forming the U-shaped groove is the first contact surface, and the surface of the second stop bar forming the U-shaped groove is the second contact surface. When two adjacent movable frames are overlapped, the first contact surface of the connector of one movable frame contacts the second contact surface of the other movable frame, and at the same time, the second contact surface of the connector of that movable frame contacts the first contact surface of the other movable frame.

[0016] Compared with existing technologies, the movable telescopic fire door of the present invention has the following advantages:

[0017] The movable telescopic fire door of this invention has casters at the bottom of the door panel for easy movement on the ground. The four top corners of the door panel are respectively equipped with L-shaped upper left, upper right, lower left, and lower right movable frames. An adjustment mechanism allows these four frames to move outwards to the upper left, upper right, lower left, and lower right respectively, thus expanding the door. This allows the four frames to abut against the left and right walls, ceiling, and floor of the corridor to secure the fire door. Furthermore, the four frames block the gaps between the door panel and the ceiling, walls, and floor to prevent smoke and fire. This fire door can compress the space of the fire area, preventing the spread of fire and minimizing fire damage. During evacuation and rescue operations, personnel and equipment can also pass through the door. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a structural diagram of a movable telescopic fire door;

[0020] Figure 2 This is a magnified view of a portion of the movable retractable fire door at point A.

[0021] Figure 3 This is a magnified view of part B of the movable retractable fire door;

[0022] Figure 4 This is a front view of a movable retractable fire door.

[0023] Figure 5 This is a schematic diagram of the reverse structure of a movable telescopic fire door;

[0024] Figure 6 This is a schematic diagram of the structure of the upper left active frame;

[0025] Figure 7 This is a schematic diagram of the drive mechanism;

[0026] Figure 8 This is a diagram showing the usage status of a movable retractable fire door.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Door panel; 11. Slide rail; 12. Casters; 13. Door panel outer frame; 2. Door leaf; 3. Upper left movable frame; 31. First stop bar; 32. Second stop bar; 33. Slot; 34. First contact surface; 35. Second contact surface; 4. Upper right movable frame; 41. Short slide groove; 42. First corner slide groove; 43. Upper rack; 431. Lower tooth section; 432. Ratchet section; 5. Lower left movable frame; 6. Lower right movable frame; 61. Second corner slide groove; 62. Lower rack; 621. Upper tooth section; 7. Check pawl; 8. Drive assembly; 81. First gear; 82. Second gear; 83. Third gear; 84. Fourth gear; 85. Fifth gear; 86. Sixth gear; 87. Handwheel; 9. Seal. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figure 1 , 4 As shown in Figures 1 and 5, a movable telescopic fire door includes a door panel 1, a door leaf 2, an upper left movable frame 3, an upper right movable frame 4, a lower left movable frame 5, a lower right movable frame 6, an adjustment mechanism, and casters 12.

[0034] The door panel 1 has a door leaf 2 in the middle, and a door panel frame 13 around the door panel. The bottom of the door panel 1 has casters 12. There is a gap between the top of the door panel frame 13 and the ceiling, gaps between the left and right sides of the door panel frame 13 and the left and right walls, and a gap between the bottom of the door panel frame 13 and the ground. The gaps facilitate the movement of the fire door.

[0035] The door panel 1 has four L-shaped movable frames at its four corners: an upper left movable frame 3, an upper right movable frame 4, a lower left movable frame 5, and a lower right movable frame 6. The door panel 1 also has adjustment mechanisms to move these four movable frames to the upper left, upper right, lower left, and lower right respectively, allowing them to rest against the left and right walls, ceiling, and floor of the corridor, thus securing the fire door. These four movable frames also block gaps between the door panel 1 and the ceiling, walls, and floor to prevent smoke and fire. One end of the upper left movable frame 3 overlaps with one end of the upper right movable frame 4; the other end of the upper left movable frame 3 overlaps with one end of the lower left movable frame 5; the other end of the lower left movable frame 5 overlaps with one end of the lower right movable frame 6; and the other end of the lower right movable frame 6 overlaps with one end of the upper right movable frame 4. This overlapping arrangement increases the blocking area and reduces gaps when the movable frames are unfolded. The fire door is used as follows: Figure 8 As shown.

[0036] This fire door can compress the space of the fire area, prevent the fire from spreading, and minimize fire losses. During personnel evacuation and rescue, personnel and equipment can also pass through the door.

[0037] For example, the door panel 1 is provided with slide rails 11 extending towards the upper left, upper right, lower left and lower right respectively, and the four movable frames are provided with slide grooves that slide on the slide rails 11 respectively.

[0038] Specifically, the upper left movable frame 3 and the upper right movable frame 4 are each provided with two sliding grooves, namely a short sliding groove 41 and a first corner sliding groove 42. The short sliding groove 41 is connected to the horizontal section of the upper left movable frame 3 and the upper right movable frame 4, and the first corner sliding groove 42 is connected to the angle between the upper left movable frame 3 and the upper right movable frame 4.

[0039] Specifically, a second corner groove 61 is provided on both the lower left movable frame 5 and the lower right movable frame 6, and the second corner groove 61 is connected at the angle between the lower left movable frame 5 and the lower right movable frame 6.

[0040] For example, there are two adjustment mechanisms, located on the left and right sides of the door panel 1 respectively, and one adjustment mechanism can simultaneously drive the upper and lower movable frames.

[0041] Specifically, such as Figure 2 and 7 As shown, the adjustment mechanism includes a drive assembly 8 and a ratchet pawl 7. The drive assembly 8 includes a first gear 81 and a second gear 82. The upper left movable frame 3 and the upper right movable frame 4 are respectively provided with upper racks 43 extending towards the upper left and upper right. The lower left movable frame 5 and the lower right movable frame 6 are respectively provided with lower racks 62 extending towards the lower left and lower right. Both the upper racks 43 and the lower racks 62 are slidably mounted on the door panel 1. The first gear 81 and the second gear 82 are rotatably mounted between the upper racks 43 and the lower racks 62 on the same side. The lower surface of the upper rack 43 is provided with a lower tooth segment 431 that meshes with the first gear 81. The upper surface of the lower rack 62 is provided with an upper tooth segment 621 that meshes with the second gear 82. The first gear 81 and the second gear 82 are directly or indirectly connected. The upper surface of the upper rack 43 is provided with a ratchet segment 432. The door panel 1 is provided with a ratchet pawl 7 that works with the ratchet segment 432.

[0042] More specifically, the drive assembly 8 also includes a third gear 83, a fourth gear 84, a fifth gear 85, a sixth gear 86, and a handwheel 87. The third gear 83 is fixed to the outside of the first gear 81, and the diameter of the third gear 83 is larger than the diameter of the first gear 81. The fourth gear 84 is fixed to the outside of the second gear 82, and the diameter of the fourth gear 84 is larger than the diameter of the second gear 82. The fifth gear 85 and the sixth gear 86 are disposed between the third gear 83 and the fourth gear 84, and the fifth gear 85 and the sixth gear 86 mesh with each other. The third gear 83 meshes with the fifth gear 85, and the fourth gear 84 meshes with the sixth gear 86. A handwheel 87 is also provided on the fifth gear 85 or the sixth gear 86.

[0043] By turning the handwheel, the second and first gears can be driven to rotate through the sixth, fifth, fourth, and third gears, respectively, thereby moving the upper and lower racks and realizing the expansion and contraction of the four movable frames.

[0044] For example, the four movable frames are provided with seals 9 on the side walls that contact the left and right walls, the ceiling and the ground to achieve the sealing of the corridor.

[0045] Specifically, the four activity frameworks all have the same structure, such as Figure 3 and 6 As shown, both ends of the movable frame are equipped with connectors, each connector including a first stop bar 31 and a second stop bar 32. The length of the first stop bar is shorter than the length of the second stop bar. One end of both the first and second stop bars is integrally connected to the end of the movable frame, and the first and second stop bars are perpendicular to each other to form a U-shaped groove 33. The surface of the first stop bar forming the U-shaped groove is the first contact surface 34, and the surface of the second stop bar forming the U-shaped groove is the second contact surface 35. When two adjacent movable frames are overlapped, the first contact surface of the connector of one movable frame contacts the second contact surface of the other movable frame, and simultaneously the second contact surface of the connector of one movable frame contacts the first contact surface of the other movable frame. The portion of the second stop bar of one movable frame that extends beyond the first stop bar is engaged in the groove 33 of the other movable frame. When the connectors of the two movable frames are staggered, the first stop bars can block each other.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A movable telescopic fire door, characterized in that: Includes door panel, door leaf, upper left movable frame, upper right movable frame, lower left movable frame, lower right movable frame, adjustment mechanism and casters; The door panel has a door leaf in the middle, an outer frame around the door panel, and casters at the bottom. There is a gap between the top of the outer frame and the ceiling, gaps between the left and right sides of the outer frame and the left and right walls, and a gap between the bottom of the outer frame and the ground. These gaps facilitate the movement of the fire door. The door panel has L-shaped upper left, upper right, lower left, and lower right movable frames at its four top corners. The door panel also has adjustment mechanisms to move these four frames to the upper left, upper right, lower left, and lower right respectively, allowing them to rest against the left and right walls, ceiling, and floor of the corridor. These frames also block gaps between the door panel and the ceiling, walls, and floor to prevent smoke and fire. One end of the upper left movable frame overlaps with one end of the upper right movable frame, the other end overlaps with one end of the lower left movable frame, the other end overlaps with one end of the lower right movable frame, and the other end overlaps with one end of the lower right movable frame. This overlapping arrangement increases the blocking area and reduces gaps when the movable frames are unfolded. All four movable frames have identical structures. Each movable frame has a connector at both ends, which includes a first stop bar and a second stop bar. The length of the first stop bar is shorter than the length of the second stop bar. One end of each of the first and second stop bars is integrally connected to the end of the movable frame. The first and second stop bars are perpendicular to each other to form a U-shaped groove. The surface of the first stop bar forming the U-shaped groove is the first contact surface, and the surface of the second stop bar forming the U-shaped groove is the second contact surface. When two adjacent movable frames are overlapped, the first contact surface of the connector of one movable frame contacts the second contact surface of the other movable frame, and at the same time, the second contact surface of the connector of that movable frame contacts the first contact surface of the other movable frame.

2. The movable telescopic fire door according to claim 1, characterized in that: The door panel is equipped with slide rails extending towards the upper left, upper right, lower left, and lower right respectively, and the four movable frames are each equipped with a sliding groove that slides on the slide rails.

3. The movable telescopic fire door according to claim 2, characterized in that: The upper left and upper right movable frames are each provided with two sliding grooves, namely a short sliding groove and a first corner sliding groove. The short sliding groove connects the horizontal sections of the upper left and upper right movable frames, and the first corner sliding groove connects the angle between the upper left and upper right movable frames.

4. The movable telescopic fire door according to claim 2, characterized in that: Both the lower left and lower right movable frames are provided with a second corner slide groove, which connects to the angle between the lower left and lower right movable frames.

5. The movable telescopic fire door according to claim 1, characterized in that: There are two adjustment mechanisms, located on the left and right sides of the door panel respectively. One adjustment mechanism can simultaneously drive the upper and lower movable frames.

6. The movable telescopic fire door according to claim 5, characterized in that: The adjustment mechanism includes a drive assembly and a ratchet pawl. The drive assembly includes a first gear and a second gear. Upper racks extending towards the upper left and upper right are respectively provided on the upper left and upper right movable frames, while lower racks extending towards the lower left and lower right are respectively provided on the lower left and lower right movable frames. Both the upper and lower racks are slidably mounted on the door panel. The first gear and the second gear are rotatably mounted between the upper and lower racks on the same side. The lower surface of the upper rack has a lower tooth segment that meshes with the first gear; the upper surface of the lower rack has an upper tooth segment that meshes with the second gear. The first gear and the second gear are directly or indirectly connected. The upper surface of the upper rack has a ratchet segment, and a ratchet pawl that engages with the ratchet segment is provided on the door panel.

7. The movable telescopic fire door according to claim 6, characterized in that: The drive assembly also includes a third gear, a fourth gear, a fifth gear, a sixth gear, and a handwheel. The third gear is fixed to the outside of the first gear, and the diameter of the third gear is larger than that of the first gear. The fourth gear is fixed to the outside of the second gear, and the diameter of the fourth gear is larger than that of the second gear. The fifth gear and the sixth gear are located between the third gear and the fourth gear, and the fifth gear and the sixth gear mesh with each other. The third gear meshes with the fifth gear, and the fourth gear meshes with the sixth gear. A handwheel is also provided on the fifth gear or the sixth gear.

8. The movable telescopic fire door according to claim 1, characterized in that: The four movable frames have seals on the side walls that contact the left and right walls, ceiling, and floor.

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