Steel wind pressure resistant heat-insulating fireproof door

Abstract

This utility model provides a steel wind-pressure resistant and heat-insulating fire door, belonging to the technical field of fire door technology. It includes a door frame, a door body rotatably mounted within the door frame, a door closer installed on the door body and door frame, and a locking mechanism on the door frame and door body. This utility model solves the problems of existing fire doors where excessive opening leads to overstretching and damage of the door closer, and where the fire door will close under the action of the door closer if it is not pushed open, requiring continuous pushing to open the fire door in emergencies, thus consuming escape time.

Description

Technical Field

[0001] This utility model belongs to the field of fire door technology, specifically relating to a steel wind pressure resistant and heat-insulating fire door. Background Technology

[0002] Thermally broken aluminum alloy windows are an improved version of traditional aluminum alloy windows, designed to enhance their thermal insulation performance. The principle behind thermally broken aluminum alloy windows is the use of PA66 nylon to separate yet tightly connect the inner and outer layers of aluminum alloy, creating a new type of heat-insulating aluminum profile. The main components of fire-resistant aluminum alloy windows include: an aluminum alloy steel window frame, an aluminum alloy steel window sash, and fire-resistant glass. These windows offer a combination of attractive appearance, fire resistance, sound insulation, and smoke insulation. Advantages of fire-resistant aluminum alloy windows include strong corrosion resistance, attractive appearance, good airtightness, strong wind pressure resistance, and excellent thermal insulation properties.

[0003] Existing fire doors, when used, can cause the door closer to stretch excessively and become damaged when opened too much. At the same time, if the fire door is not pushed open, it will be closed by the door closer. In an emergency, the fire door needs to be pushed open continuously, which consumes a lot of escape time. Summary of the Invention

[0004] This utility model provides a steel wind pressure resistant and heat-insulating fire door, which aims to solve the problem that when existing fire doors are used, excessive opening will cause the door closer to be overstretched and damaged. At the same time, if the fire door is not pushed open, it will be closed by the door closer. In case of emergency, it is necessary to keep pushing the fire door open, which consumes a lot of escape time.

[0005] This utility model provides a steel wind pressure resistant and heat-insulating fireproof door, including a door frame, a door body rotatably installed in the door frame, a door closer installed on the door body and the door frame, and a locking mechanism provided on the door frame and the door body.

[0006] Furthermore, a pivot is fixed on one side of the door, and the upper and lower ends of the pivot rotate within the door frame.

[0007] By adopting the above technical solution, the pivot shaft serves as the core of the door's rotation. Its two ends are embedded inside the door frame to form a stable pivot point, which enhances the door's resistance to wind pressure and avoids the defect of traditional hinged connections being prone to deformation in strong winds. At the same time, it provides a precise positioning basis for the locking mechanism.

[0008] Furthermore, the door frame is connected to the pivot and has an arc-shaped slot on the side facing the opening direction of the door, and the pivot protrudes outward from the outside of the slot.

[0009] By adopting the above technical solution, the arc-shaped slot and the exposed part of the pivot form a dynamic matching space. When the door rotates, the pivot moves along the slot trajectory and is not restricted in the rotation angle, providing a sliding channel for the subsequent locking rod and ensuring that the locking mechanism can intervene accurately.

[0010] Furthermore, the locking mechanism includes a slot on the rotating shaft, a sliding groove on the other side of the door frame located by the door closer, the sliding groove communicating with the slot, a locking groove extending outward from the sliding groove, a locking box communicating outward from the locking groove, the locking box being installed on the surface of the door frame by bolts, a locking rod sliding in the locking box, the end of the locking rod away from the slot extending to the outside of the locking box, the locking rod passing through the sliding groove and the locking groove extending into the slot, a fixing plate being fixed to the surface of the locking rod, and the fixing plate being connected to the locking box by a spring.

[0011] By adopting the above technical solution, under normal conditions, the spring pushes the fixing plate so that the front end of the locking rod abuts against the surface of the rotating shaft; when the door is opened, when the door rotates to the set angle, the slot aligns with the locking rod, the spring releases its elasticity, and pushes the locking rod into the slot instantly to complete the automatic locking; when the door is closed, the locking rod is manually pulled outward to compress the spring and make it exit the slot, and the door closes automatically under the action of the door closer, avoiding over-opening when the door is opened, protecting the door closer from stretching damage, and at the same time, the door can remain open during emergency escape without continuous force, shortening the escape time.

[0012] Furthermore, the opening diameter of the locking box is smaller than the diameter of the locking groove, the sliding groove, and the fixing plate, while the diameter of the fixing plate and the locking groove is larger than the diameter of the sliding groove.

[0013] By adopting the above technical solution, the fixing plate is restricted in the inner cavity of the locking groove under the action of the locking box, which limits the maximum compression of the spring. At the same time, since the diameter of the fixing plate is smaller than the diameter of the sliding groove, the fixing plate will not slide into the sliding groove under the action of the spring, thus avoiding skew and jamming and improving the locking reliability.

[0014] Furthermore, the locking lever is adapted to the slot.

[0015] By adopting the above technical solution, the locking rod can slide into the slot without resistance and without shaking, and the precise fit ensures that the door does not shift when locked.

[0016] Furthermore, the locking lever has an arc-shaped end facing the slot.

[0017] By adopting the above technical solution, when the door body has not reached the locking angle, the rotating shaft surface contacts the arc surface to generate sliding force, while reducing the contact area and friction, forcing the locking rod to remain in the sliding groove; when it reaches the locking position, the arc surface fits the edge of the slot, improving the smoothness of entering the slot and greatly extending the service life of the mechanism.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model, through the setting of the pivot and the slot, uses the pivot as the core of the door's rotation, which can form a stable rotation fulcrum, enhance the door's wind pressure resistance, avoid the defect of traditional hinge connection being easily deformed in strong winds, and at the same time provide a precise positioning basis for the locking mechanism. Furthermore, when the door rotates, the pivot moves along the slot trajectory and is not restricted in the rotation angle, ensuring that the locking mechanism can intervene precisely.

[0020] 2. This utility model, through the setting of the locking mechanism, locks the fire door when it is opened to a limited angle, without the need to continuously apply pushing force, thus keeping the fire door open and greatly improving escape time. At the same time, it will not cause the door closer to be overstretched and damaged due to excessive pushing of the fire door, thereby improving its service life.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a front view structural diagram of a fire door according to an embodiment of the present utility model;

[0024] Figure 2 This is a rear view structural diagram of a fire door according to an embodiment of the present utility model;

[0025] Figure 3 This is an enlarged structural diagram of point a in an embodiment of the present invention;

[0026] Figure 4 This is a top view enlarged cross-sectional structural diagram of the rotating part of the door frame and door body according to an embodiment of the present utility model;

[0027] Reference numerals: 1. Door frame; 11. Slot; 2. Door body; 21. Pivot; 3. Door closer; 4. Locking mechanism; 41. Slot; 42. Sliding groove; 43. Locking groove; 44. Locking box; 45. Locking rod; 46. Fixing plate; 47. Spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Reference Figures 1-4 This utility model provides a steel wind-pressure resistant, heat-insulating, and fireproof door, including a door frame 1, a door body 2 rotatably mounted in the door frame 1, and a door closer 3 installed on the door body 2 and the door frame 1. The door closer 3 is installed on one side in the escape direction. A pivot 21 is fixed to one side of the door body 2. The upper and lower ends of the pivot 21 rotate within the door frame 1. The pivot 21 serves as the rotation core of the door body 2, with both ends embedded inside the door frame 1, forming a stable rotation fulcrum. This enhances the wind pressure resistance of the door body 2 and avoids the problems associated with traditional hinged connections. The defect of being easily deformed in strong winds provides a precise positioning basis for the locking mechanism 4. The door frame 1 is connected to the pivot 21 and has an arc-shaped slot 11 on the side facing the opening direction of the door body 2. The pivot 21 protrudes outward from the slot 11. The arc-shaped slot 11 and the exposed part of the pivot 21 form a dynamic cooperation space. When the door body 2 rotates, the pivot 21 moves along the trajectory of the slot 11 without being restricted in the rotation angle, providing a sliding channel for the subsequent locking rod 45, ensuring that the locking mechanism 4 can intervene accurately.

[0030] Reference Figures 1-4A locking mechanism 4 is provided on the door frame 1 and the door body 2. The locking mechanism 4 includes a slot 41 on the rotating shaft 21. A sliding groove 42 is provided on the other side of the door closer 3 on the door frame 1. The sliding groove 42 communicates with the slot 11. A locking groove 43 extends outward from the sliding groove 42. The locking groove 43 communicates outward with a locking box 44. The locking box 44 is installed on the surface of the door frame 1 by bolts. A locking rod 45 slides in the locking box 44. The end of the locking rod 45 away from the slot 41 extends to the outside of the locking box 44. The locking rod 45 passes through the sliding groove 42 and the locking groove 43 and extends into the slot 11. A fixing plate 46 is fixed to the surface of the locking rod 45. The fixing plate 46 and the locking box 44 are connected by a spring 47. The locking rod 45 is adapted to the slot 41. The locking rod 45 can slide into the slot 41 without resistance and without shaking. The precise fit ensures that the door body 2 does not move when locked. Under normal conditions, the spring 47 pushes the fixing plate 46 so that the front end of the locking rod 45 abuts against the surface of the rotating shaft 21; when the door is opened... When the door 2 rotates open to the set angle, the slot 41 aligns with the locking rod 45, the spring 47 releases its elasticity, and the locking rod 45 is instantly pushed into the slot 41, completing the automatic locking. At this time, the end of the locking rod 45 located outside the locking box 44 still has length for easy pulling outward. When closing the door, the locking rod 45 is manually pulled outward, compressing the spring 47 to make it exit the slot 41, and the door 2 automatically closes under the action of the door closer 3, avoiding over-opening when opening the door 2 and protecting the door closer 3 from stretching damage. At the same time, the door 2 can remain open during emergency escape without continuous force, shortening the escape time. Furthermore, the locking rod 45 is curved towards the end of the slot 41. When the door 2 has not reached the locking angle, the surface of the rotating shaft 21 contacts the curved surface to generate sliding force, while reducing the contact area and friction, forcing the locking rod 45 to remain in the sliding groove 42. When the locking position is reached, the curved surface fits the edge of the slot 41, improving the smoothness of entry into the groove and greatly extending the service life of the mechanism.

[0031] Reference Figures 1-4 The opening diameter of the locking box 44 is smaller than the diameter of the locking groove 43, the sliding groove 42, and the fixing plate 46. The diameters of the fixing plate 46 and the locking groove 43 are larger than the diameter of the sliding groove 42. Under the action of the locking box 44, the fixing plate 46 is restricted in the inner cavity of the locking groove 43, limiting the maximum compression of the spring 47. At the same time, because the diameter of the fixing plate 46 is smaller than the diameter of the sliding groove 42, the fixing plate 46 will not slide into the sliding groove 42 under the action of the spring 47, avoiding skew and jamming, and improving the locking reliability.

[0032] The specific implementation method is as follows: This fire door is installed in an open space without walls perpendicular to it on both sides. Without the door closer 3 and locking mechanism 4 obstructing the view, the fire door can rotate 180°. However, the door closer 3 and locking mechanism 4 restrict its movement. In an emergency, when the fire door is opened and rotated, the locking rod 45 extends towards the slot 11 under the action of the spring 47. The end of the locking rod 45 only contacts the surface of the rotating shaft 21. When the door is rotated to the point where the escape route is fully opened, i.e., more than 90°, the locking rod 45... 5 can be inserted into the slot 41 under the elastic force of the spring 47, thereby locking the fire door and preventing it from rotating further. At the same time, the door closer 3 cannot close the fire door, and the fire door will be locked at this angle. When the last person escapes, the last person pulls the locking rod 45 outward, causing the locking rod 45 to disengage from the slot 41. Then, the fire door will automatically close under the action of the door closer 3. Before the door is fully closed, the last person will press against the fire door and open it only to an angle smaller than the locked angle. After passing through, the door closer 3 will automatically close the fire door.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel wind-pressure resistant, heat-insulating, fireproof door, comprising a door frame (1), characterized in that, A door body (2) is rotatably installed in the door frame (1), and a door closer (3) is installed on the door body (2) and the door frame (1). A locking mechanism (4) is provided on the door frame (1) and the door body (2).

2. A steel wind-pressure resistant, heat-insulating, and fireproof door according to claim 1, characterized in that: A pivot (21) is fixed on one side of the door body (2), and the upper and lower ends of the pivot (21) rotate within the door frame (1).

3. A steel wind-pressure resistant, heat-insulating, and fireproof door according to claim 2, characterized in that: The door frame (1) is connected to the pivot (21) and has an arc-shaped slot (11) on the side facing the opening direction of the door body (2). The pivot (21) protrudes outward from the slot (11).

4. A steel wind-pressure resistant, heat-insulating, and fireproof door according to claim 3, characterized in that: The locking mechanism (4) includes a slot (41) on the rotating shaft (21). The door frame (1) is provided with a sliding groove (42) on the other side of the door closer (3). The sliding groove (42) is connected to the slot (11). The sliding groove (42) extends outward to a locking groove (43). The locking groove (43) is connected outward to a locking box (44). The locking box (44) is installed on the surface of the door frame (1) by bolts. A locking rod (45) slides in the locking box (44). The end of the locking rod (45) away from the slot (41) extends to the outside of the locking box (44). The locking rod (45) passes through the sliding groove (42) and the locking groove (43) and extends into the slot (11). A fixing plate (46) is fixed on the surface of the locking rod (45). The fixing plate (46) and the locking box (44) are connected by a spring (47).

5. A steel wind-pressure resistant, heat-insulating, and fireproof door according to claim 4, characterized in that: The opening diameter of the locking box (44) is smaller than the diameter of the locking groove (43), the sliding groove (42) and the fixing plate (46), and the diameter of the fixing plate (46) and the locking groove (43) is larger than the diameter of the sliding groove (42).

6. A steel wind-pressure resistant, heat-insulating, and fireproof door according to claim 4, characterized in that: The locking lever (45) is adapted to the slot (41).

7. A steel wind-pressure resistant, heat-insulating, and fireproof door according to claim 6, characterized in that: The locking lever (45) has an arc-shaped end facing the slot (41).

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