High performance anti-closing steel fire door

Abstract

The present invention discloses a high-performance anti-closing steel fireproof door, and relates to the technical field of fireproof doors. The present invention comprises a door frame, wherein a door body is rotatably connected to the interior of the door frame through a hinge, and the door frame and the door body are connected through an anti-closing device, and the anti-closing device comprises an arc tube and a U-shaped plate, wherein one end of the arc tube is fixedly connected to one end of the U-shaped plate, and the connection between the arc tube and the U-shaped plate is an arc surface, and an end surface of the arc tube away from the U-shaped plate is fixedly connected to the rear surface of the door frame, and the front surface of the U-shaped plate is fixedly connected to the rear surface of the door frame, and a fixed plate is fixedly installed inside the end of the U-shaped plate away from the arc tube, and a sliding column is penetrated inside the fixed plate. After opening, the door body of the present invention will be perpendicular to the door frame, and even if it is hit by an escaping person, only a small vibration will occur, thereby avoiding the closed again of the opened fireproof door, and buying precious time for the escaping person.

Description

Technical Field

[0001] The invention belongs to the technical field of fireproof doors, and in particular relates to a steel fireproof door. Background Art

[0002] Fire doors are defined as those that have passed the fire resistance test of the new version of the national standard for fire doors GB_12955-2008 implemented on January 1, 2009 by the laboratories designated by the Ministry of Fire Protection and the Ministry of Economic Affairs, and have obtained the verification registration certificate and authorization mark issued by the Bureau of Standards, Metrology and Inspection of the Ministry of Economic Affairs. Fire doors are defined by the NFPA and IBC specifications of the United States as "any combination of fire-resistant door leaves, door frames, hardware and other accessories that can jointly provide a certain degree of fire protection for the opening.

[0003] At present, the steel fire doors on the market are in an extremely unstable state after being opened. The escapees may collide with the steel fire doors during the escape process, causing the opened steel fire doors to close again, hindering the escape of the escapees, wasting the time of the escapees, and threatening the lives of the escapees. For this reason, the present invention designs a steel fire door. The door body of the steel fire door will be perpendicular to the door frame after opening. Even if it is collided with by the escapees, only a small vibration will occur, thereby avoiding the opened steel fire door from closing again, and buying precious time for the escapees. Summary of the invention

[0004] The purpose of the present invention is to provide a high-performance anti-closing steel fire door. By arranging an anti-closing device, the problem that the door body of the existing fire door is in an extremely unstable state after being opened, and the escapees may collide with the fire door during the escape process, causing the opened fire door to close again, thereby hindering the escape of the escapees.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a high-performance anti-closing steel fireproof door, comprising a door frame, wherein the interior of the door frame is rotatably connected to a door body via a hinge, and the door frame and the door body are connected via an anti-closing device;

[0007] The anti-closing device comprises an arc tube and a U-shaped plate, one end of the arc tube is fixedly connected to one end of the U-shaped plate, the connection between the arc tube and the U-shaped plate is an arc surface, the end surface of the arc tube away from the U-shaped plate is fixedly connected to the rear surface of the door frame, the front surface of the U-shaped plate is fixedly connected to the rear surface of the door frame, a fixing plate is fixedly installed inside the end of the U-shaped plate away from the arc tube, a sliding column passes through the interior of the fixing plate, a circular baffle is fixedly installed on the end surface of the sliding column located inside the U-shaped plate, a spring is sleeved on the circumferential side surface of the sliding column and between the fixing plate and the circular baffle, a sphere is provided on a surface of the U-shaped plate located on the surface away from the sliding column and the interior of the arc tube, a connecting column is fixedly installed on the bottom end of the sphere located on the far left, and the end surface of the connecting column away from the sphere is fixedly connected to the rear surface of the door body.

[0008] Furthermore, the door body is provided with a handle, the handle is sleeved with an anti-slip ring, and the anti-slip ring is a component made of rubber material.

[0009] Furthermore, the centers of the arc tube and the arc groove are both on the center line of rotation of the door body.

[0010] Furthermore, the U-shaped plate is composed of a half annular tube and two side plates, and the width of the side plates is the same as the inner diameter of the half annular tube.

[0011] Furthermore, the width of the arc-shaped groove is smaller than the diameter of the sphere, and the difference is between 3-4 cm.

[0012] Furthermore, the connecting column is L-shaped and is a component made of steel alloy.

[0013] The present invention has the following beneficial effects:

[0014] The door body of the present invention will be perpendicular to the door frame after opening, and even if it is hit by an escaping person, only a small vibration will occur, thereby avoiding the opened fire door from closing again, and buying precious time for the escaping person.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1It is a schematic diagram of the structure of the high-performance anti-closing steel fire door of the present invention from the front view;

[0018] Figure 2 It is a schematic diagram of the structure of the high-performance anti-closing steel fire door of the present invention from the rear view;

[0019] Figure 3 is a top view of the door frame of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the anti-closing device of the present invention;

[0021] Figure 5 It is a front view of the anti-closing device of the present invention;

[0022] Figure 6 is a cross-sectional view of the anti-closing device of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the arc groove of the present invention;

[0024] Figure 8 It is a side view of the U-shaped plate of the present invention;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-door frame, 2-door body, 201-handle, 3-anti-closing device, 301-arc tube, 302-U-shaped plate, 303-arc groove, 304-fixing plate, 305-sliding column, 306-circular baffle, 307-spring, 308-sphere, 309-connecting column. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-8 As shown, the present invention is a high-performance anti-closing steel fireproof door, comprising a door frame 1, the interior of the door frame 1 is rotatably connected to a door body 2 via a hinge, and the door frame 1 and the door body 2 are connected via an anti-closing device 3;

[0029] The anti-closing device 3 includes an arc tube 301 and a U-shaped plate 302. One end of the arc tube 301 is fixedly connected to one end of the U-shaped plate 302. The connection between the arc tube 301 and the U-shaped plate 302 is an arc surface. The end surface of the arc tube 301 away from the U-shaped plate 302 is fixedly connected to the rear surface of the door frame 1. The front surface of the U-shaped plate 302 is fixedly connected to the rear surface of the door frame 1. A fixed plate 304 is fixedly installed inside the end of the U-shaped plate 302 away from the arc tube 301. A sliding column 305 runs through the interior of the fixed plate 304. The sliding column 305 is fixedly installed inside the fixed plate 304. A circular baffle 306 is fixedly installed on one end face of the column 305 located inside the U-shaped plate 302, a spring 307 is sleeved on the peripheral side of the sliding column 305 and located between the fixed plate 304 and the circular baffle 306, a sphere 308 is provided on the surface of the circular baffle 306 away from the sliding column 305 inside the U-shaped plate 302 and the inside of the arc tube 301, a connecting column 309 is fixedly installed on the bottom end of the sphere 308 located on the far left, and the end face of the connecting column 309 away from the sphere 308 is fixedly connected to the rear surface of the door body 2.

[0030] like Figure 1-8 As shown, a handle 201 is provided on the door body 2, and an anti-slip ring is sleeved on the handle 201, and the anti-slip ring is a component made of rubber material.

[0031] The centers of the arc tube 301 and the arc groove 303 are both on the center line of rotation of the door body 2 .

[0032] The U-shaped plate 302 is composed of a half annular tube and two side plates, and the width of the side plates is the same as the inner diameter of the half annular tube.

[0033] The width of the arc groove 303 is smaller than the diameter of the sphere 308 , and the difference is between 3-4 cm.

[0034] The connecting column 309 is in an L-shape and is a component made of a steel alloy.

[0035] A specific application of this embodiment is: when the door body 2 needs to be opened, the handle 201 is pressed downward. At this time, due to the action of the spring 307, the circular baffle 306 will be squeezed, so that the circular baffle 306 squeezes the sphere 308 to move inside the arc tube 301 until the door body 2 is perpendicular to the door frame 1. At this time, even if the door body 2 is hit by an escapee, only a slight vibration will occur, thereby avoiding the opening of the fire door and closing it again, thus buying precious time for the escapee.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-performance anti-closing steel fireproof door, comprising a door frame (1), wherein the interior of the door frame (1) is rotatably connected to a door body (2) via a hinge, and characterized in that: The door frame (1) and the door body (2) are connected via an anti-closing device (3); The anti-closing device (3) comprises an arc-shaped tube (301) and a U-shaped plate (302); one end of the arc-shaped tube (301) is fixedly connected to one end of the U-shaped plate (302); the connection between the arc-shaped tube (301) and the U-shaped plate (302) is an arc surface; the end surface of the arc-shaped tube (301) away from the U-shaped plate (302) is fixedly connected to the rear surface of the door frame (1); the front surface of the U-shaped plate (302) is fixedly connected to the rear surface of the door frame (1); a fixed plate (304) is fixedly installed inside the end of the U-shaped plate (302) away from the arc-shaped tube (301); a sliding column (305) penetrates inside the fixing plate (304); the sliding column (305) ) A circular baffle (306) is fixedly installed on one end surface located inside the U-shaped plate (302); a spring (307) is sleeved on the peripheral side surface of the sliding column (305) and located between the fixed plate (304) and the circular baffle (306); a sphere (308) is provided inside the U-shaped plate (302) and on a surface of the circular baffle (306) away from the sliding column (305) and inside the arc tube (301); a connecting column (309) is fixedly installed on the bottom end of the sphere (308) located at the end of the arc tube (301) away from the circular baffle (306); and an end surface of the connecting column (309) away from the sphere (308) is fixedly connected to the rear surface of the door body (2); The centers of the arc-shaped tube (301) and the arc-shaped groove (303) are both on the center line of rotation of the door body (2); the width of the arc-shaped groove (303) is smaller than the diameter of the sphere (308), and the difference is between 3 and 4 cm.

2. The high performance anti-closing steel fire door according to claim 1, characterized in that: The door body (2) is provided with a handle (201), and an anti-slip ring is sleeved on the handle (201), and the anti-slip ring is a component made of rubber material.

3. The high performance anti-closing steel fire door according to claim 1, characterized in that: The U-shaped plate (302) is composed of a half annular tube and two side plates, and the width of the side plates is the same as the inner diameter of the half annular tube.

4. The high performance anti-closing steel fire door according to claim 1, characterized in that: The shape of the connecting column (309) is L-shaped, and the connecting column (309) is a component made of steel alloy.

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