KR101939488B1 - Corner reinforcement structure of fire door frame - Google Patents

Abstract

The present invention relates to a corner reinforcing structure for a frame of a fireproof door. More particularly, the present invention provides a corner reinforcing structure for a frame of a fireproof door including: a reinforcing bracket directly coupled to two door frames to reinforce a structural strength of corners, to which the two door frames are connected, wherein the reinforcing bracket is coupled in a slide or fitting scheme so that the easiness and functionality for an overall operation in a fireproof door manufacturing process may be remarkably improved. In particular, the present invention may improve a coupling force by pressing and supporting a reinforcing bracket with an elastic force when the reinforcing bracket is fitted with a door frame, and may be easily applied to various products and remarkably lower the defect rate of the product by stably supporting the reinforcing bracket while the shape of a configuration of generating an elastic force is elastically deformed even though the shape of the door frame is deformed. Accordingly, reliability and competitiveness may be improved in the field of a fireproof door and the field of a fireproof door reinforcing structure, in particular, in the field of a corner reinforcing structure for a corner of a frame of a fireproof door and the similar or related fields as well.

Description

{Corner reinforcement structure of fire door frame}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fire door frame corner reinforcement structure, and more particularly, to a reinforcing bracket connected to two door frames in order to reinforce the structural strength of a corner where two door frames are connected A sliding method, and a fitting method, thereby making it possible to greatly improve the ease and functionality of the overall operation in the process of manufacturing a fire door.

Particularly, in the present invention, when the reinforcing bracket is fitted to the door frame, the reinforcing bracket is press-supported by using the elastic force so that not only the joining force is improved but also the shape of the constitution for generating the elastic force, The present invention relates to a frame corner reinforcement structure for a fire door that can be easily applied to various products and significantly reduce a defective rate of a product.

Fire doors are designed to block and delay the spread of flames and smoke in the event of a fire. Unlike ordinary doors, functional surfaces must be considered as the most important consideration, and they are mainly made of metal, taking fire resistance and manufacturing costs into consideration.

In particular, various types of reinforcing structures are applied to the corner portion of the hinged portion and the hinge portion to which the key cylinder is mounted, the hinge is attached, so that the fire door can withstand various impacts externally applied.

For example, Korean Unexamined Patent Publication No. 10-0954551 entitled " Prior Art 1 " (hereinafter referred to as " Prior Art 1 " 0823367 'Welded window frame connection structure having a corner stiffener connection structure, window structure using the same, and method of manufacturing the same' (hereinafter, referred to as 'Prior Art 2') are used for a corner connection structure of a frame forming an outline of a fire door .

In the case of the prior art 1, the fixture is inserted into the fitting groove of the frame to closely contact the partition, and then the two adjacent frames are connected through the bolt connection. In this structure, the fixture merely connects the two frames. .

In the case of the prior art 2, although a separate frame reinforcing member is formed at the corner portion, an opening is formed in the corner portion of the frame for attaching the frame reinforcing member, and a cover is additionally joined. Able to know.

Generally, since a frame for a fire door is manufactured through a roll forming process, a separate working process is required to form an opening in a part of the frame as in the prior art 2, and additional expensive processing equipment is required for this purpose I can not help it.

Also, in the prior art, since both the fastener and the stiffener are coupled to the frame by the bolts, defects such as defective coupling may occur due to machining errors of the respective structures, which leads to an increase in the price and defect rate of the product, The reliability of the apparatus is deteriorated.

Korean Patent Registration No. 10-0954551 " Corner fixing device for edge frame for fire door " Korean Patent Registration No. 10-0823367 'Welded window frame connection structure having a corner stiffener connection structure, window structure using the same, and manufacturing method thereof'

In order to solve the above problems, the present invention provides a fire door frame corner reinforcement structure that can greatly improve the ease of fabrication and fabrication of the fire door by simplifying the structure and processing of the door frame and the reinforcement bracket The purpose is to provide.

In addition, in the present invention, when combining the two door frames and the reinforcing brackets, the door frame and the reinforcing bracket are combined with each other by a sliding method and a fitting method, thereby reinforcing the ease of the overall operation and the functionality of the fire door. Structure.

Particularly, in the present invention, when the reinforcing bracket is fitted to the door frame, the reinforcing bracket is pressurized and supported by using the elastic force, so that not only the joining force is improved but also the joining is possible irrespective of the machining error. The present invention aims at providing a frame corner reinforcement structure of a fire door that can be easily applied to various products and greatly reduce a defective rate of a product by allowing the shape of the structure generating elastic force to be elastically deformed and being stably supported have.

In order to achieve the above object, the fire door frame corner reinforcement structure according to the present invention is characterized in that the outer side surface is formed with an outer bent portion in the longitudinal direction toward the inner side, and at least two A door frame; And a reinforcement bracket that is formed to correspond to a corner shape to which two adjacent door frames are connected and is coupled to the door frame to be supported by the outer bend portion and the inner bend portion.

The reinforcing bracket may include: a first engaging portion coupled to one of the door frames; And at least one of the first engaging portion and the second engaging portion is formed such that at least a part of the edge of one side surface is located on the inner surface of the inner bent portion And at least a part of the central portion of the other side surface can be brought into close contact with the inner surface of the outer bending portion.

In addition, the reinforcing bracket may be formed with a buffer between the first engaging portion and the second engaging portion.

In addition, at least one of the first and second engaging portions may be formed with at least one first elastic bulb which is brought into close contact with the outer bent portion by an elastic force.

In addition, at least one of the first and second engaging portions may be formed with at least one second resilient portion which is brought into close contact with an inner surface of the outer surface by an elastic force.

At least one of the first and second engaging portions may be formed with at least one third elastic contact member which is brought into close contact with the inner surface of the side surface of the outer bent portion by an elastic force.

At least one of the first engaging portion and the second engaging portion is formed to be inserted into the door frame through the inside opening face, and at least one of the first engaging portion and the second engaging portion has at least one A supporting piece can be formed.

The supporting piece may include: a bent part bent from at least one of the first and second coupling parts to the inside direction of the door frame; And an elastic support portion extending from the bent portion and supporting the inside of the door frame.

In addition, the elastic support portion may be supported in close contact with at least one of a side surface of the frame, a side surface of the inside bent portion, and a side surface of the outside bent portion of the door frame.

The supporting piece may further include an elastic pressing part formed between the bent part and the elastic supporting part to press-support the inner surface of the outer surface of the door frame.

According to the above-mentioned solution, the present invention has an advantage that the structure and processing of the door frame and the reinforcement bracket are simplified, so that the entire fire door can be easily processed and manufactured.

In addition, according to the present invention, when the two door frames and the reinforcing brackets are combined, the sliding method and the fitting method are selectively applied to be combined with each other. Thus, various types of corner reinforcement structures Is applied.

Accordingly, the present invention has the effect of greatly improving the ease and functionality of the overall operation in the fire door manufacturing process.

In addition, in the present invention, in particular, in the present invention, when a reinforcing bracket is fitted to a door frame, the reinforcing bracket is press-supported using an elastic force, so that the bonding force can be improved.

In addition, since the present invention allows fluid coupling using an elastic force, it is possible for the respective components to be combined regardless of the machining error, and even if deformation occurs in the shape of the door frame during the manufacturing process or after use, There is an advantage that the structure can be stably supported.

Further, the present invention can be easily applied to various products because the reinforcing brackets can be coupled even if the shape of the frame changes due to the fluid deformation of the coupling structure by the elastic force, and the advantage of being able to significantly reduce the defective rate of the product have.

Accordingly, it is possible to improve reliability and competitiveness in the field of fire doors and fire door reinforcement structures, in particular, corner reinforcement structures of fire doors, as well as similar or related fields.

1 is a perspective view showing an embodiment of a fire door frame corner reinforcement structure according to the present invention.
2 is a sectional view taken along the line A-A 'in Fig.
Figs. 3 to 8 are views showing other embodiments of the reinforcing bracket shown in Fig. 1. Fig.
9 and 10 are perspective views showing another embodiment of a fire door frame corner reinforcement structure according to the present invention.
Figs. 11 and 12 are views showing other embodiments of the first engaging portion shown in Fig.

The fire door frame corner reinforcement structure according to the present invention can be variously applied, and the most preferred embodiment will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a frame corner reinforcement structure for a fire door according to the present invention, and FIG. 2 is a sectional view taken along the line A-A 'in FIG.

Referring to FIG. 1, the fire door frame corner reinforcement structure A includes two door frames 100 and a reinforcement bracket 200 to which the door frame 100 is connected to form a corner. .

The door frame 100 is machined such that the end portion thereof is tilted and the inclined portions are brought into close contact with each other to form the corner of the fire door frame, and the inclination angle of the inclined portion to be processed corresponds to the overall appearance of the fire door frame.

The door frame 100 is formed with an outer bent portion 111 and an inner bent portion 131 for supporting the reinforcing bracket 200.

The outer bent portion 111 is formed in the longitudinal direction on the outer side surface 110 of the door frame 100 (the upper side in FIG. 2). The outer side surface of the reinforcing bracket 200 (I.e., a surface facing the center).

The inner bent portion 131 is formed along both side edges of the inner opening face 130 of the door frame 100 and can be formed by bending the frame side face 120. The inner bent portion 131 can be formed by bending the inner side face of the reinforcing bracket 200 (I.e., a surface facing downward in Fig. 2).

2, the inner surface of the outer bending portion 111 and the inner surface of the inner bending portion 131 may be spaced corresponding to the thickness of the reinforcing bracket 200, The reinforcing bracket 200 can be configured to be fitted in a sliding manner as shown.

The reinforcing bracket 200 is formed so as to correspond to a corner shape (90 degrees in FIG. 1) to which two neighboring door frames 100 are connected, and the reinforcing bracket 200 is formed so as to correspond to the outside bending portion 111 and the inside bending portion May be coupled to the door frame 100 to be supported by the door frame 131.

More specifically, as shown in FIG. 1, the reinforcing bracket 200 includes a first coupling portion 210 coupled to one door frame 100 and a second coupling portion 210 coupled to the other adjacent door frame 100 The first and second coupling parts 210 and 200 may be formed to include a first coupling part 220 and a second coupling part 220. The first coupling part 210 and the second coupling part 200 may be formed to be bent at 90 degrees.

At least one of the first engaging portion 210 and the second engaging portion 220 of the reinforcing bracket 200 may be at least one of the edges of the one side surface (the lower surface in Fig. 2) And at least a part of the central portion of the other side surface (the upper surface in FIG. 2) can be brought into close contact with the inner surface of the outer bending portion 111.

In addition, a portion of one side of the reinforcing bracket 200 other than the edge may be exposed to the outside through the inside opening 130.

Therefore, it is possible to easily couple the door frame 100 and the reinforcing bracket 200 through the simple sliding type coupling structure, but also to improve the structural strength with respect to the corner of the frame.

When two adjacent door frames 100 are displaced from each other due to an external force during a process of manufacturing a fire door or using the door, the reinforcing bracket 200 configured to connect the two door frames 100 Cracks or the like may be generated in the bent portion (the portion where the first engaging portion and the second engaging portion are connected), which may lead to deterioration of the quality of the fire door itself and deterioration of its function. In case of severe fire, Can not be performed.

Hereinafter, a method of continuously maintaining the function of the reinforcing bracket 200 even if two neighboring door frames 100 are displaced or deformed will be described.

Figs. 3 to 8 are views showing other embodiments of the reinforcing bracket shown in Fig. 1. Fig.

Referring to FIG. 3 (a), the reinforcing bracket 200 may include a buffer 230 between the first and second couplers 210 and 220.

An external force applied to the first coupling portion 210 is transmitted to the second coupling portion 220 or an external force applied to the second coupling portion 220 is transmitted to the first coupling portion 210, The first coupling portion 210 and the second coupling portion 200 may be formed in a curved shape in order to generate an elastic force.

3 (b), when the first coupling part 210 is moved in the horizontal direction, the buffer 230 absorbs the second coupling part 220 so that the second coupling part 220 can be stably maintained .

Of course, it is natural that the buffer portion can absorb the second coupling portion 220 even when the second coupling portion 220 is moved in the vertical direction.

Therefore, even if the reinforcing bracket 200 is deformed by the door frame 100, the buffer 230 can absorb or mitigate it and return to the original state, so that the corner structure of the fire door frame is stably maintained .

2, the reinforcing bracket 200 is supported by the outer bending portion 111 and the inner bending portion 131 of the door frame 100. However, The supporting force of the reinforcing bracket 200 may be lowered.

Hereinafter, a method for stably maintaining the combined holding force of the door frame 100 and the reinforcing bracket 200 will be described.

Referring to FIG. 4, at least one first elasticity hole 211 may be formed in the first coupling portion 210 to correspond to the outer bending portion 111.

For example, when the gap G between the outer bent portion 111 and the inner bent portion 131 is larger than the thickness of the reinforcing bracket 200 as shown in FIG. 4A, 4 (c), when the first elasticity hole 211 is formed in the first coupling part 210 as shown in FIG. 4 (a), the elasticity of the first elasticity hole 211 causes the outer bent part 111 can be coupled to the door frame 100 so that the reinforcing bracket 200 can be stably supported.

Therefore, even if the shape of the door frame 100 (specifically, the shape of the outer bent portion) is deformed, the coupling structure between the door frame 100 and the reinforcing bracket 200 can be stably maintained.

The first resilient bulb 211 may be formed in the second engaging portion 220, and the second resilient bulb 212 to be described later is also the same.

5, the first coupling part 210 may further include at least one second elasticity hole 212 which is brought into close contact with an inner surface of the outer side surface 110 of the door frame 100 by an elastic force .

5, the first elasticity hole 211 of the reinforcing bracket 200 is supported by the outer bent portion 111 of the door frame 100, and the second elasticity hole 212 is formed by the outer Can be supported on the side surface (110).

Therefore, the coupling structure between the door frame 100 and the reinforcing bracket 200 shown in Fig. 5 can be maintained more stably than in Fig.

The second resilient bulb 212 may be formed in a curved shape similar to that of the first resilient bulb 211 shown in FIG. 4, but is not limited thereto, and may be formed as an integral symbol as shown in FIG. 6 . ≪ / RTI >

The first elasticity hole 211 and the second elasticity hole 212 are formed in the inner and outer directions of the reinforcing bracket 200 coupled to the door frame 100 (Upper and lower direction in Fig. 6 (b)).

Hereinafter, a description will be given of a case where the outer surface 110 of the door frame 100 is deformed into various shapes according to requirements of those skilled in the art and the first elastic bulb 211 and the second elastic bulb 212 can not be used .

7, a third elastic portion 213 for generating a pressing force in a lateral direction (left-right direction in FIG. 7 (b)) by an elastic force is attached to the first engagement portion 210 of the reinforcing bracket 200 .

Therefore, the reinforcing bracket 200 is not attached to the inner surface of the outer bending portion 111 or the inner surface of the outer side surface 111 but to the side surface of the outer bending portion 111, more concretely, The elastic bracket 213 is used to generate a pressing force so that the structure in which the reinforcing bracket 200 is stably coupled to the door frame 100 can be maintained.

8, the second elastic member 212 and the third elastic member 213 may be formed so that the reinforcing bracket 200 can be stably coupled to the door frame 100 Of course.

Therefore, the present invention can improve the engaging force and the supporting force of the reinforcing bracket 200 with respect to the door frame 100 by using at least one of the first through third elastic bulges 211 through 213 described above .

In the above, the case where the reinforcing bracket 200 is coupled to two different door frames 100 in a sliding manner has been described.

However, the method of manufacturing the door frame 100 constituting the fire door frame is not limited thereto, and it is needless to say that the door frame 100 can be manufactured by various methods according to the requirements of those skilled in the art.

Therefore, in the following description, a case where the reinforcing bracket 200 is coupled to one door frame 100 in a sliding manner and the other reinforcing bracket 200 is coupled to the other door frame 100 in a fitting manner will be described.

9 and 10 are perspective views showing another embodiment of a fire door frame corner reinforcement structure according to the present invention.

9, when the second coupling portion 220 is slidably coupled to one of the door frames 200, the first coupling portion 210 is coupled to the inner side of the door frame 200 And can be inserted and coupled to the inside of the door frame 100 through the opening face 130. At this time, it is a matter of course that the width of the first coupling portion 210 is narrower than the width of the second coupling portion 220 as shown in FIG. 10 (a).

At least one supporting piece 214 for supporting a coupling force with the door frame 100 may be formed at an edge of the first coupling part 210. [

The support piece 214 includes a bent portion 214a bent from the first coupling portion 210 inwardly of the door frame 100 and a bent portion 214b extending from the bent portion 214a to support the inside of the door frame 100 And may include an elastic support portion 214b.

The elastic supporting portion 214b is brought into close contact with the bending portion 214a and the first coupling portion 210 is engaged with the door frame 100 in the process of coupling the first coupling portion 210 to the door frame 100. [ When fully inserted, the resilient supporting portion 214b returns to its original shape by the elastic force and can support the inside of the door frame 100 as shown in Fig. 10 (b).

Although the supporting piece 214 is described as being formed on the first coupling part 210, the first coupling part 210 and the second coupling part 220 shown in FIGS. 9 and 10 can be applied to each other Of course.

The structure of the first coupling part 210 may be formed in the second coupling part 220 at the same time as the first coupling part 210 and the second coupling part 220 are fitted to each other. It is of course possible to be coupled to the frame 100.

Figs. 11 and 12 are views showing other embodiments of the first engaging portion shown in Fig.

11A, the elastic support portion 214b 'of the support piece 214 is bent in a direction opposite to the shape of FIGS. 9 and 10, and as shown in FIG. 11B, And presses and supports both sides of the base 111.

Also, as shown in FIG. 12, the support pieces 214 can generate a pressing force at two points inside the door frame 100

More specifically, the support piece 214 can form the pressurizing elastic portion 214c between the bent portion 214a and the elastic support portion 214b.

When the door frame 100 and the reinforcing bracket 200 are coupled to each other, the pressing elastic portion 214c presses the inner surface of the outer surface 110 of the door frame 100 The elastic supporting portion 214b can be pressed so that the end portion of the elastic supporting portion 214b can press and support between the frame side surface 120 and the inner bent portion 131. [

Accordingly, the combined state of the door frame 100 and the reinforcing bracket 200 can be maintained through the improved supporting force.

9 to 12, the elastic supporting portion 214 is formed on the inside of the frame side face 120 of the door frame 100, inside the inside bent portion 131, inside the side face of the outside bent portion 111 So that it is possible to support the coupling force between the door frame 100 and the reinforcing bracket 200.

The frame corner reinforcement structure of the fire door according to the present invention has been described above. It will be understood by those skilled in the art that the technical features of the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is to be understood, therefore, that the embodiments described above are in all respects illustrative and not restrictive.

A: Frame corner reinforcement structure of fire door
100: Door frame
110: outer side surface 111:
120: frame side
130: Inner opening face 131: Inner bend
200: Bracket
210: first coupling portion 211: first elastic portion
212: second elastic member 213: third elastic member
214: Support piece 214a:
214b: elastic supporting portion 214c: elastic pressing portion
220: second coupling portion
230: buffer

Claims (10)

At least two door frames having outer side bending portions formed in the longitudinal direction toward the inner side and inner bending portions formed along the side edge portions at the inner side opening; And
And a reinforcement bracket formed to correspond to a corner shape to which two adjacent door frames are connected and coupled to the door frame to be supported by the outer bent portion and the inner bent portion,
The reinforcing bracket
A first coupling unit coupled to one of the door frames; And
And a second coupling unit coupled to another door frame adjacent to the first coupling frame,
Wherein at least one of the first engaging portion and the second engaging portion includes:
At least a part of one side edge of the one side surface is brought into close contact with the inner surface of the inner bent part and at least a part of the center part of the other side surface is in close contact with the inner surface of the outside bent part,
Wherein at least one third resilient bulb is formed to be in close contact with an inner surface of the side surface of the outer bent portion by an elastic force.
The method according to claim 1,
The reinforcing bracket
And a buffer part is formed between the first and second coupling parts.
The method according to claim 1,
Wherein at least one of the first engaging portion and the second engaging portion includes:
Wherein at least one first elastic bulb is formed to be in close contact with the outer bent portion by an elastic force.
The method according to claim 1,
Wherein at least one of the first engaging portion and the second engaging portion includes:
Wherein at least one second elastic bulb is formed to be in close contact with the inner surface of the outer surface by an elastic force.
At least two door frames having outer side bending portions formed in the longitudinal direction toward the inner side and inner bending portions formed along the side edge portions at the inner side opening; And
And a reinforcement bracket formed to correspond to a corner shape to which two adjacent door frames are connected and coupled to the door frame to be supported by the outer bent portion and the inner bent portion,
The reinforcing bracket
A first coupling unit coupled to one of the door frames; And
And a second coupling unit coupled to another door frame adjacent to the first coupling frame,
Wherein at least one of the first engaging portion and the second engaging portion includes:
At least a part of one side edge of the one side surface is brought into close contact with the inner surface of the inner bent part and at least a part of the center part of the other side surface is in close contact with the inner surface of the outside bent part,
Wherein at least one of the first engaging portion and the second engaging portion includes:
At least one support piece for supporting a coupling force with the door frame is formed at an edge of the door frame,
The support piece
A bent portion bent from at least one of the first and second coupling portions to the inside of the door frame; And
And an elastic support portion extending from the bent portion and supporting the inside of the door frame,
The elastic support portion
Wherein the door frame is held in close contact with at least one of a side surface of the frame, a side surface of the inside bent portion, and a side surface of the outside bent portion of the door frame.
6. The method of claim 5,
The support piece
And an elastic pressing portion formed between the bent portion and the elastic supporting portion to press-support the inner surface of the outer surface of the door frame. delete delete delete delete

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