Fire door assembly structure and methods

Abstract

This invention relates to a fire door assembly structure and method. During assembly, a door frame structure is first installed at a predetermined location on the door leaf. An upper door hinge and a lower door hinge are vertically and correspondingly positioned above and below the door frame structure. The reference surface on the lower door hinge defines the installation height of the door leaf body. Next, a cover plate and a bottom plate are interlocked using a plurality of mating structures. The first and second folding portions of the mating structures increase strength, and hooks and mating portions form a fixed connection to complete the door leaf body. Finally, an upper hinge and a lower hinge are installed on the door leaf body and combined with the upper and lower door hinges. This simple and quick method completes the manufacturing and assembly of the fire door, significantly simplifying the construction process and avoiding the need for remeasurement.

Description

[Technical Field]

[0001] The present invention provides a fire door assembly structure and method that can reduce the manufacturing cost of fire doors, simplify the assembly process with the door frame, and shorten the manufacturing time of fire doors, while taking into account the strength and fire protection standards of fire doors. [Previous Technology]

[0002] Note that fire doors, as an important facility for building safety protection, must meet strict requirements for fire resistance and structural stability in their manufacturing and installation. However, the existing fire door manufacturing and installation processes still have obvious defects, mainly in terms of complicated procedures, long working hours, and difficulties in on-site adjustments.

[0003] The manufacturing process of a door leaf typically involves multiple steps: cutting the frame material according to the door leaf thickness and size, welding and fixing it to form a basic frame, and adding internal reinforcing structures to enhance stability; next, sealing the front and back panels and filling them with fire-resistant materials, such as mineral wool or calcium silicate boards. During the filling process, it is crucial to ensure a tight fit between the material and the frame, otherwise, the fire resistance may be affected. After filling, the edges of the door leaf are sealed, and metal strips are used to enhance structural strength and appearance. Finally, the door leaf needs surface coating or film treatment, and hinge seats and other hardware are pre-embedded. These steps are interconnected and cannot be simplified or omitted, resulting in an overly complex overall process and higher production costs and time.

[0004] During installation, the door leaf needs to be connected to the door frame via hinges. However, the door frame is usually fixed during the masonry stage, and its height is a fixed value. The actual height after the floor is installed often varies, affecting the accuracy of the hinge connection and installation efficiency. Especially when using a top and bottom hinge design, the position of the bottom hinge is easily impossible to pre-set due to floor interference or obstruction. Construction workers have to wait until the floor is completed to remeasure the door leaf dimensions and hinge positions. This not only increases installation time but also places higher demands on construction skills, further delaying the project schedule.

[0005] Therefore, due to the challenges of multiple processes and on-site adjustments in the above-mentioned fire door manufacturing process, it is difficult to meet the needs of fast and efficient construction. Therefore, how to solve this problem is the direction that the applicant of this invention and related manufacturers in this industry are eager to study and improve. [Summary of the Invention]

[0006] Therefore, in view of the above-mentioned deficiencies, the applicant of this invention collected relevant information, conducted multiple evaluations and considerations, and, based on years of experience accumulated in this industry, through continuous trial and modification, designed this invention patent holder for a fire door combination structure and method that can reduce the manufacturing cost of fire doors, simplify the combination action with the door frame, and shorten the manufacturing time of fire doors, while taking into account the strength and fire protection standards of fire doors.

[0007] The main objective of this invention is to utilize the design of the docking structure to enable the door body to be assembled in a two-piece quick assembly method using the cover plate and the bottom plate, while taking into account both structural strength and fire resistance standards.

[0008] Another main objective of this invention is to provide a reference surface for the installation of the door leaf body during construction by utilizing the design of the upper and lower door hinge seats, thereby avoiding problems of poor fit and re-measurement, and simplifying the combination of the door leaf body and the door frame structure.

[0009] To achieve the above objectives, the structure of the present invention includes: a door leaf body, an upper hinge, a lower hinge, a door frame structure, an upper door pivot seat, a lower door pivot seat, and a reference surface. The door leaf body includes a cover plate, a bottom plate, and a plurality of mating structures. Each mating structure has a hook portion, a first folding portion, a second folding portion, and a mating portion. The upper hinge is located above the door leaf body, and the lower hinge is located below the door leaf body and perpendicularly corresponds to the upper hinge. The door frame structure is movably configured. The door leaf body has an upper door hinge seat located above the door frame structure and connected to the upper hinge, and a lower door hinge seat located below the door frame structure and connected to the lower hinge. The reference surface is defined on the upper surface of the lower door hinge seat. Each mating structure is formed at the junction of the cover plate and the bottom plate. The hook portion is formed at the end of the cover plate. The first folding portion is formed at the end of the bottom plate. The second folding portion is formed at the end of the first folding portion away from the bottom plate. The mating portion is formed at the end of the second folding portion away from the first folding portion and is connected to the hook portion.

[0010] When a user uses the present invention to assemble a fire door, a door frame structure is first set at the predetermined installation location of the door leaf body, and the upper door hinge seat and the lower door hinge seat are respectively set vertically and correspondingly above and below the door frame structure. The installation height of the door leaf body is defined by the reference surface on the lower door hinge seat. Then, the cover plate and the bottom plate are inserted and combined through a plurality of docking structures. The strength is increased by the first folding part and the second folding part of the docking structure. The door leaf body is fixed by the hook part and the docking part. Finally, the upper hinge and the lower hinge are set on the door leaf body and combined with the upper door hinge seat and the lower door hinge seat. In this way, the manufacturing and assembly of the fire door can be completed simply and quickly, greatly simplifying the construction process and avoiding the problem of re-measurement.

[0011] By means of the above technology, the problems of conventional fire doors, such as high door leaf manufacturing cost, complicated door leaf assembly process and long working time, and poor work team coordination that requires re-measurement, can be overcome, and the above-mentioned advantages can be achieved through practical progress. [Simplified Explanation of the Diagram]

[0041] The first figure is a perspective view of the first preferred embodiment of the present invention.

[0042] The second figure is an exploded view of the first preferred embodiment of the present invention.

[0043] The third figure is a flowchart of the steps of the first preferred embodiment of the present invention.

[0044] The fourth figure is a schematic diagram of the door frame arrangement in the first preferred embodiment of the present invention.

[0045] The fifth figure is a schematic diagram of the door assembly of the first preferred embodiment of the present invention (I).

[0046] The sixth figure is a schematic diagram (II) of the door assembly of the first preferred embodiment of the present invention.

[0047] The seventh figure is a schematic diagram of the door frame assembly of the first preferred embodiment of the present invention.

[0048] The eighth figure is an exploded view of the hinge of the second preferred embodiment of the present invention.

[0049] The ninth figure is a schematic diagram of automatic recovery according to the second preferred embodiment of the present invention.

Implementation Method

[0012] In order to achieve the above-mentioned objectives and effects, the technical means and structure adopted by the present invention are described in detail below with reference to the preferred embodiments of the present invention, so as to facilitate a complete understanding.

[0013] Please refer to Figures 1 to 3, which are perspective views and flowcharts of the first preferred embodiment of the present invention. It can be clearly seen from the figures that the present invention includes:

[0014] A door leaf body 1 includes a cover plate 11, a bottom plate 12, and a plurality of docking structures 13 formed at the joints of the cover plate 11 and the bottom plate 12 on both sides. Each docking structure 13 has a hook portion 131 formed at the end of the cover plate 11, a first folding portion 132 formed at the end of the bottom plate 12, a second folding portion 133 formed at the end of the first folding portion 132 away from the bottom plate 12, and a docking portion 134 formed at the end of the second folding portion 133 away from the first folding portion 132 and correspondingly engaged with the hook portion 131. The cover plate 11 and the bottom plate 12 are made of steel plate, aluminum alloy plate or other fire-resistant material, and the docking structure 13 is a structure formed by bending the side edges of the cover plate 11 and the bottom plate 12 integrally.

[0015] An upper hinge 2 is installed above the door leaf body 1;

[0016] A hinge 3 is installed below the door body 1 and is perpendicular to the upper hinge 2.

[0017] A door frame structure 4 is provided for the movable installation of the door leaf body 1. In this embodiment, the door frame structure 4 is an example of extruded aluminum metal.

[0018] An upper door hinge seat 5 is installed above the door frame structure 4 and is connected to the upper hinge 2;

[0019] A lower door hinge seat 6 is located below the door frame structure 4 and is connected to the lower hinge 3; and

[0020] A reference plane 61 is defined on the upper surface of the lower door hinge seat 6.

[0021] The method for assembling the fire door of the present invention includes the following steps:

[0022] (a) Setting a door frame structure: A door frame structure 4 is set at a predetermined installation location of a door leaf body 1;

[0023] (b) Setting up upper and lower door hinge seats: A top door hinge seat 5 and a bottom door hinge seat 6 are respectively vertically and correspondingly set at the top and bottom of the door frame structure 4;

[0024] (c) Define the installation height of the door leaf body: Define the installation height of the door leaf body 1 by means of a reference surface 61 on the upper surface of the lower door hinge seat 6;

[0025] (d) Door leaf body assembly: A cover plate 11 and a bottom plate 12 are joined together by a plurality of mating structures 13;

[0026] (e) Fixing of docking structure: Each docking structure 13 has a hook portion 131 formed at the end of the cover plate 11, a first folding portion 132 formed at the end of the bottom plate 12, a second folding portion 133 formed at the end of the first folding portion 132 away from the bottom plate 12, and a docking portion 134 formed at the end of the second folding portion 133 away from the first folding portion 132, so that the hook portion 131 is inserted between the docking portion 134 and the second folding portion 133 to form a fixation;

[0027] (f) Installing upper and lower hinges: An upper hinge 2 and a lower hinge 3 are respectively installed vertically above and below the door body 1; and

[0028] (g) Door leaf body and door frame structure combination: the lower hinge 3 on the door leaf body 1 is combined with the lower door pivot seat 6, and the upper hinge 2 is combined with the upper door pivot seat 5.

[0029] However, the above sequence of steps is only an example of a preferred embodiment. For example, steps (d) and (e) can be performed first, followed by steps (a), (b), and (c), and the sequence of steps is not limited to this.

[0030] The upper door hinge seat 5 and the lower door hinge seat 6 respectively have a connecting part 62 fixed to one side of the cover plate 11, a bending part 63 formed on one side of the connecting part 62, and a shaft hole part 64 formed on the bending part 63.

[0031] The door frame structure 4 has a side wall portion 41, a plurality of fixing ports 411 formed on the side wall portion 41 for inserting the connecting portion 62, and a fixing portion 42 formed on one side of the side wall portion 41 for fixing the connecting portion 62. The side wall portion 41 refers to the two sides that are not adjacent to the door leaf body 1. The fixing portion 42 is a part that extends from the side wall portion 41. In this embodiment, it is an example that is orthogonal to the side wall portion 41.

[0032] The door body 1 has a fireproof structure, and the upper and lower ends of the connecting structure 13 are respectively provided with sealing parts 135. The fireproof structure is a fireproof filling material such as mineral wool, calcium silicate board or perlite board. The sealing part 135 is a bent plate formed by integrally forming and extending the side edge of the cover plate 11 or the bottom plate 12, as an example.

[0033] The structure of this technology can be understood through the above explanation. Based on the corresponding combination of this structure, it can reduce the manufacturing cost of fire doors, simplify the combination with the door frame, and shorten the manufacturing time of fire doors, while taking into account the strength and fire protection standards of fire doors. A detailed explanation will be given below.

[0034] Please refer to Figures 1 to 7 for a perspective view of the first preferred embodiment of the present invention and a schematic diagram of the door frame assembly. As can be clearly seen from the figures, when the user assembles the fire door, a door frame structure 4 is first set at a predetermined position on the door leaf of the sliding door, and an upper door hinge seat 5 and a lower door hinge seat 6 are respectively vertically and correspondingly set above and below the door frame structure 4. During the setting, the joint part 62 of the block structure is inserted into the fixing port 411 of the side wall part 41 and fixed with the fixing part 42. The fixing method can be welding, screwing, or tenoning. After the setting is completed, the reference surface 61 on the lower door hinge seat 6 can be defined as the lowest point of the setting height of the door leaf body 1. Generally speaking, when laying mortar or tiles on the floor, the final floor height will vary depending on the experience or habits of the installers. Since the lower hinge 3 and the lower door pivot 6 need to be embedded in the ground, the installers can use the height of the reference surface 61 as the floor height. This provides the installers with a height reference and also reminds them of the floor height, thus avoiding the door frame structure 4 being too low to install the door leaf body 1.

[0035] Next, the door body 1 is manufactured. A cover plate 11 and a bottom plate 12 are joined together by multiple docking structures 13. The docking structure 13 increases strength by folding the first folding part 132 and the second folding part 133 twice. The folding effect causes the position of the docking part 134 to shift inward toward the bottom plate 12. While the bottom plate 12 can close the cover plate 11, the hook part 131 of the cover plate 11 can be fitted with the docking part 134 to complete the basic frame of the door body 1. As for the action of the bottom plate 12 to close the cover plate 11, the gap between the docking part 134 and the second folding part 133 can be used as an installation track. The two hook parts 131 can slide in from the ends of the tracks on both sides at the same time. Alternatively, the hook part 131 on one side can be inserted into the track on the same side first, and then the bottom plate 12 can be slightly bent to insert the hook part 131 on the other side into the track on the corresponding side. Then, the internal structure of the door body 1 is reinforced and the fireproof structure 7 is filled. Then, the openings on the upper and lower sides of the cover plate 11 and the bottom plate 12 are sealed with sealing member 135. The sealing member 135 is fixed to the bottom plate 12 by welding.

[0036] Finally, since the combination of the door leaf body 1 and the door frame structure 4 has eliminated the errors caused by construction, the locking holes of the upper hinge 2 and the lower hinge 3 can be directly opened on the door leaf body 1. The upper hinge 2 and the lower hinge 3 can be simply set on the door leaf body 1, and the spring in the upper hinge 2 or the lower hinge 3 can be used to compress its shaft 21 so that the shaft 21 can be inserted into the shaft hole 64 of the upper door pivot seat 5 and the lower door pivot seat 6. Due to the design of the bending part 63, the position of the shaft hole 64 can be moved to the gap between the door leaf body 1 and the door frame structure 4, so that the upper hinge 2 and the lower hinge 3 combined on the door leaf body 1 can be directly inserted into the shaft hole 64. In this way, the manufacturing cost of the fire door can be reduced, the manufacturing time of the fire door can be shortened, and the combination action of the door leaf body 1 and the door frame structure 4 can be simplified, avoiding the problem of re-measurement caused by height error, while taking into account the strength and fire protection standards of the fire door.

[0037] Please also refer to Figures 8 and 9, which are exploded views and automatic return diagrams of the hinges in the second preferred embodiment of the present invention. As can be clearly seen from the figures, the main difference between this embodiment and the above embodiment is the addition of an automatic return function for the upper hinge 2 and the lower hinge 3. Therefore, an automatic return structure is provided on the upper hinge 2 and the lower hinge 3 respectively. In this embodiment, the automatic return structure includes an outer sleeve 81, a flag piece 82, two connecting parts 83a / 83b, an inner sleeve 84, and a torsion spring 85. Taking the upper hinge 2 as an example, the flag piece 82 is fixed on the outer sleeve 81 for connection with the door body 1. The torsion spring 85 is placed inside the inner sleeve 84 and its two ends are fixed on the upper and lower connecting parts 83a / 83b respectively. The lower connecting part 83b is locked to the outer sleeve 81, and the upper connecting part 83a is locked to the upper door pivot seat 5. The shaft 21 of the upper hinge 2 is set on the upper connecting part 83a. Thus, when the door body 1 is opened, the shaft 21 is fixed and cannot rotate by the upper connecting piece 83a, and the external force of the rotation of the door body 1 is transferred to the compression torsion spring 85, so that the flag 82 drives the outer sleeve 81 to rotate relative to the shaft 21. When the door body 1 is released, the torque of the torsion spring 85 is used to achieve automatic closing. The design of the inner sleeve 84 can not only limit the torsion spring 85, but also prevent the connecting pieces 83a / 83b from retracting when adjusting the torque, which is convenient for adjustment.

[0038] However, the above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Therefore, any simple modifications and equivalent structural changes made using the contents of the present invention specification and drawings should also be included within the patent scope of the present invention and are hereby stated.

[0039] In summary, the fire door assembly structure and method of the present invention can effectively achieve its function and purpose when used. Therefore, the present invention is indeed a highly practical invention. In order to meet the application requirements for an invention patent, this application is hereby filed in accordance with the law. I hope that the Examination Board will grant the present invention as soon as possible to protect the applicant's hard work. If the Examination Board has any questions, please do not hesitate to write to me for instructions. The applicant will do its best to cooperate. Thank you for your help.

Claims

1. A fire door assembly structure, comprising: A door leaf body includes a cover plate, a bottom plate, and a plurality of mating structures formed at the joints of the cover plate and the bottom plate on both sides. Each mating structure has a hook portion formed at the end of the cover plate, a first folding portion formed at the end of the bottom plate, a second folding portion formed at the end of the first folding portion opposite to the bottom plate, and a mating portion formed at the end of the second folding portion opposite to the first folding portion and correspondingly engaged with the hook portion; an upper hinge is provided at the top of the door leaf body; a lower hinge is provided at the bottom of the door leaf body and is perpendicular to the upper hinge; a door frame structure is provided for movably mounting the door leaf body; and an upper door hinge seat is provided at the top of the door frame structure and is engaged with the upper hinge. A lower door hinge seat is located below the door frame structure and embedded in the ground, and is connected to the lower hinge; and a reference surface is defined on the upper surface of the lower door hinge seat and exposed on the ground, serving as the lowest point of the installation height of the door leaf body.

2. The fire door assembly structure as described in claim 1, wherein the upper door pivot and the lower door pivot each have a joint portion fixed to one side of the cover plate, a bend portion formed on one side of the joint portion, and a shaft hole portion formed on the bend portion.

3. The fire door assembly structure as described in claim 2, wherein the door frame structure has a side wall portion, a plurality of fixing openings formed on the side wall portion for inserting the connecting portion, and a fixing portion formed on one side of the side wall portion for fixing the connecting portion.

4. The fire door assembly structure as described in claim 1, wherein the upper hinge and the lower hinge each have an automatic return structure.

5. The fire door assembly structure as described in claim 1, wherein the door leaf body has a fireproof structure, and each of the connecting structures has a sealing element at its upper and lower ends.

6. A method for assembling a fire door, comprising the following steps: A door frame structure is provided at a predetermined installation location of a door leaf body; an upper door hinge seat and a lower door hinge seat are respectively vertically and correspondingly provided above and below the door frame structure, and the lower door hinge seat is embedded in the ground; a reference surface is used to define the lowest point of the installation height of the door leaf body by exposing a reference surface on the upper surface of the lower door hinge seat; a cover plate and a bottom plate are assembled by inserting them together through a plurality of mating structures; each mating structure has a hook portion formed at the end of the cover plate, a first fold portion formed at the end of the bottom plate, a second fold portion formed at the end of the first fold portion away from the bottom plate, and a mating portion formed at the end of the second fold portion away from the first fold portion, so that the hook portion is inserted between the mating portion and the second fold portion to form a fixation; An upper hinge and a lower hinge are respectively vertically and correspondingly installed at the top and bottom of the door body; and the lower hinge on the door body is connected to the lower door pivot seat, and the upper hinge is connected to the upper door pivot seat.

7. The method of assembling a fire door as described in claim 6, wherein the upper door pivot and the lower door pivot each have a joint portion fixed to one side of the cover plate, a bent portion formed on one side of the joint portion, and a shaft hole portion formed on the bent portion.

8. The method of assembling a fire door as described in claim 7, wherein the door frame structure has a side wall portion, a plurality of fixing openings formed on the side wall portion for inserting the connecting portion, and a fixing portion formed on one side of the side wall portion for fixing the connecting portion.

9. The method of assembling a fire door as described in claim 6, wherein the upper hinge and the lower hinge each have an automatic return structure.

10. The method of assembling a fire door as described in claim 6, wherein the door leaf body has a fireproof structure, and each of the mating structures has a sealing element at its upper and lower ends.

Images