KR102251150B1 - Metal door and method for manufacturing the same - Google Patents

Abstract

Provided is a metal door. The metal door according to an aspect of the present invention, as a metal door closed when a main body unit is securely seated on a door frame, comprises: a front surface member forming the front surface of the main body unit; a rear surface member forming the rear surface of the main body unit; and an inner frame formed along the edge of the main body unit, wherein the inner frame includes: a first portion formed horizontally; a second portion extended from the front end of the first portion outward; and a third portion extended from the outer end of the second portion backward on the cross section of the main body unit, and the front surface member is formed to cover some of the inner surface of the third portion, the outer surface of the third portion and the front surface of the second portion. According to the present invention, a manufacturing process of a metal door can be simplified to enhance productivity and a manufacturing cost thereof can be reduced.

Description

Metal door and its manufacturing method {METAL DOOR AND METHOD FOR MANUFACTURING THE SAME}

The present specification relates to a metal door and a method of manufacturing the same. In more detail, it relates to a metal door that is easy to manufacture and has improved airtight performance, and a method of manufacturing the same.

Fire doors are structures such as entrance doors or emergency doors that are installed at entrances to houses, apartments, factories, offices, and prefabricated temporary buildings to block the spread of flames and smoke to the back side when a fire occurs. The fire door is composed of a frame installed through a wall and a door hinged to it, like a general entrance door. In addition, handles are installed at the front and rear of the door, respectively, so that the user holds the handle and pulls or pushes the door to open or close it.

These fire doors must be resistant to conditions such as combustion, melting, cracking, pyrolysis, explosion or deterioration, even when exposed to fire. In addition, resistance to distortion must be provided so as to prevent expansion of the damage range due to fire by maintaining the bonded state to the door frame even while exposed to strong heat.

The fire door is made of a strong metal material so that deformation or loss by fire does not occur. In more detail, the fire door is composed of a front member and a rear member made of a metal material, and an inner frame that is disposed between the front member and the rear member to couple the front member and the rear member. In addition, even if the fire door is not in the event of a fire, an insulating material is embedded between the front member and the rear member to maintain the same thermal insulation performance as a general window.

In addition to the role of preventing the flame from spreading directly, the fire door also plays a role of preventing smoke from the fire from escaping. For example, if smoke from a fire spreads to an evacuation route, there is a risk of suffocation. In order to prevent smoke from passing through the fire door in this way, the door frame made of steel is bent inward to form a space in which a flame retardant gasket can be seated, and the flame retardant gasket is coupled to the space. When the fire door is closed, the flame-retardant gasket is pressed to seal the space between the two sides of the fire door, preventing smoke from passing.

Meanwhile, in the conventional fire door, when the front member and the rear member made of metal are joined to the inner frame, internal welding is performed using a tag welding method. At this time, the conventional fire door is required with a skilled welder in order to improve durability and/or reliability, and there is a problem in that productivity is lowered because it undergoes a process of directly welding with a human hand.

In addition, in the conventional fire door, rubber packing is coupled only to a portion where the rear surface of the fire door and the door frame meet. Accordingly, there is a limit to improving the insulation performance of the wing portion protruding outward from the edge of the fire door and preventing condensation from occurring.

In addition, there is a problem in that the coupling of a part of the rubber packing bonded to the door frame is defective, so that when the fire door is closed, it is not properly contacted with the door, or a part of the rubber packing is damaged or lost over time, thereby deteriorating the hermetic performance.

The problem to be solved by the present specification is to provide a metal door and a method of manufacturing the same, which can simplify the manufacturing process to increase productivity and reduce manufacturing cost.

In addition, it is to provide a metal door and a method of manufacturing the same, which can improve insulation performance and prevent condensation from occurring.

In addition, it is to provide a metal door with improved airtightness of a fire door and a method of manufacturing the same.

A metal door according to an aspect of the present specification for achieving the above object is a metal door in which a body portion is seated and closed on a door frame, comprising: a front member forming a front portion of the body portion; A rear member forming a rear portion of the main body; And an inner frame formed along an edge of the main body.

At this time, on the cross section of the main body, the inner frame includes a first portion formed in a front-rear direction, a second portion extending outward from a front end of the first portion, and a rearward extending from an outer end of the second portion. And a third portion of the third portion, and the front member may be formed to surround a portion of an inner surface of the third portion, an outer surface of the third portion, and a front surface of the second portion.

Through this, it is possible to increase productivity and reduce manufacturing cost by simplifying the manufacturing process of the metal door.

In addition, it is possible to improve the thermal insulation performance and more effectively prevent the occurrence of condensation.

In addition, the airtightness of the metal door can be improved.

In addition, the front member includes a front portion disposed in front of the body portion and disposed in front of the second portion, a first side portion extending rearward from an outer end of the front portion and disposed outside the third portion, It may include a first bent portion bent at the rear end of the first side portion and disposed inside the third portion.

In addition, the rear member may include a rear portion disposed on a rear surface of the body portion, and a second side portion extending forwardly along an outer surface of the first portion from an outer end of the rear portion.

In addition, the rear member may include a second bent portion bent rearward from a front end of the second side portion and disposed between the second side portion and the first portion.

In addition, it may include a first blocking member disposed between the second side portion and the first bent portion.

In addition, the first blocking member may include a portion protruding to the rear of the first bent portion.

In addition, when the main body is closed, the first blocking member may be in close contact with the door frame.

In addition, it may include a fourth portion that is bent inward at the rear end of the first portion and extends forward.

In addition, it may include a fourth portion that is bent inward at the rear end of the first portion and extends forward.

Further, a reinforcing member disposed inside the first portion may be included, and the reinforcing member may be adjacent to a front end of the fourth portion.

In addition, it may include a coupling member that penetrates the second side portion, the second bent portion, the first portion, and the reinforcing member to couple the rear member to the inner frame.

In addition, the front member may include a third bent portion bent at a front end of the first bent portion and extending rearward, and the third bent portion may be disposed between the third portion and the first bent portion.

In the method of manufacturing a metal door according to an aspect of the present specification for achieving the above object, in a method of manufacturing a metal door in which a main body is seated on a door frame and closed, a front member forming a front part of the main body and a rear part of the main body Forming a forming rear member; Coupling an inner frame to the front member; And coupling the rear member to the inner frame.

At this time, on the cross section of the main body, the inner frame includes a first portion formed in a front-rear direction, a second portion extending outward from a front end of the first portion, and a rearward extending from an outer end of the second portion. Includes a third part that is

The front member includes a front portion disposed in front of the body portion and disposed in front of the second portion, a first side portion extending rearward from an outer end of the front portion and disposed outside the third portion, and the second 1 includes a first bent portion bent at the rear end of the side portion and disposed on the inner surface of the third portion, and the inner frame includes the third portion being fitted between the first side portion and the first bent portion to Can be coupled to the member.

In addition, the rear member includes a rear portion disposed on the rear surface of the body portion, and a second side portion extending forwardly along an outer surface of the first portion from an outer end of the rear portion, and coupling the front member to the inner frame Prior to the operation, comprising the step of disposing a reinforcing member inside the inner frame, wherein a coupling member sequentially penetrates the second side portion, the inner frame, and the reinforcing member to couple the rear member to the inner frame. Can include.

Further, after coupling the rear member to the inner frame, a step of fitting and coupling a first blocking member between the first bent portion and the second side portion.

Through the present specification, it is possible to increase productivity and reduce manufacturing cost by simplifying the manufacturing process.

In addition, it is possible to improve the thermal insulation performance and more effectively prevent the occurrence of condensation.

In addition, the airtightness of the metal door can be improved.

1 is a perspective view of a metal door according to an embodiment of the present specification.
2 is a rear view of a main body of a metal door according to an embodiment of the present specification.
3 is a cross-sectional view of a metal door according to an embodiment of the present specification.
4 is a cross-sectional perspective view of a partial configuration of a metal door and a door frame according to an embodiment of the present specification.
5 is a detailed cross-sectional view of a partial configuration of a metal door according to an embodiment of the present specification.
6 is a detailed cross-sectional view of a partial configuration of a metal door according to another embodiment of the present specification.
7 to 10 are cross-sectional perspective views showing a manufacturing process of a metal door according to an embodiment of the present specification.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted.

In describing the embodiments disclosed in the present specification, when a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to the other component, It should be understood that other components may exist in the middle.

In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present specification It should be understood to include equivalents or substitutes.

On the other hand, terms of the discloser may be replaced with terms such as document, specification, and description.

Hereinafter, a description will be made on the assumption that the opening side of the metal door is front and the closing side is rear according to an exemplary embodiment of the present specification.

1 is a perspective view of a metal door according to an embodiment of the present specification. 2 is a rear view of a metal door according to an embodiment of the present specification.

The metal door according to an embodiment of the present specification may include a door frame 10, a body portion 20, and a hinge 30, but may be implemented excluding some of the configurations, and additional configurations other than Does not rule out.

Referring to FIG. 1, a metal door according to an exemplary embodiment of the present specification may include a door frame 10, a body portion 20, and a hinge 30. In a broad sense, the door frame 10 may be understood as a configuration of a metal door. It may be installed in an opening 40 of an approximately rectangular shape formed in the wall.

The metal door may include a door frame 10. The door frame 10 may have a substantially rectangular shape corresponding to the size and shape of the opening 40 formed in the wall. The door frame 10 may be seated in the opening 40 and coupled to the wall.

The door frame 10 may be formed by bending a metal member. The metal door according to an embodiment of the present specification may be used as a fire door. In this case, the front member 120 and the rear member 130 of the door frame 10 and the body portion 20 are made of a metal material that is resistant to heat. It may be desirable. The cross-section of the door frame 10 may be formed corresponding to an approximate shape of the cross-sectional shape of the door. Accordingly, when the door is closed, it can be seated and closed on the door frame 10.

The door frame 10 may include a second groove 182. The second groove portion 182 may be formed on a surface of the rear member 130 facing the rear portion 131 of the rear member 130 when the body portion 20 is closed. The second groove 182 may be formed by bending a metal member forming the door frame 10. When viewed from the front, the second groove 182 may be formed along the circumference of the door frame 10.

The door frame 10 may include a second blocking member 162. The second blocking member 162 may be disposed in the second groove 182 formed in the door frame 10. When viewed from the front, the second blocking member 162 may be formed along the circumference of the door frame 10. Specifically, the second blocking member 162 may include a fitting protrusion. Since the second blocking member 162 is formed of a rubber material or a soft synthetic resin material and has elasticity, the second blocking member 162 has a fitting protrusion pressed into the second groove 182 formed in the door frame 10. Can be combined in a way. Alternatively, the shape and/or size of the second blocking member 162 may be variously formed according to the specification and/or size of the metal door.

The second blocking member 162 may include a portion protruding from the second groove 182. Thus, when the main body part 20 is seated and closed on the door frame 10, the protruding part of the second blocking member 162 is in close contact with the rear member 130 of the main body part 20, and more specifically, compressed. Can be. Through this, both spaces of the metal door can be airtight to each other, and smoke can be prevented from leaking from one space of the metal door to the other space during a fire.

In addition, since the door frame 10 and the main body 20 are formed of a metal material, when the main body 20 is closed and contacted with the door frame 10 as it is, noise may be caused. In this case, the second blocking member 162 may reduce noise while acting as a buffer.

The second blocking member 162 may be a rubber packing or a gasket made of a flame retardant material. In addition, the second blocking member 162 may include a hollow portion on a cross section. When the inside of the second blocking member 162 is hollow, it is easy to change the shape of the second blocking member 162 so that it may be easily coupled to the second groove portion 182 of the door frame 10. In addition, when the body portion 20 is closed due to the hollow portion, the thermal insulation performance may be improved, and condensation generation may be reduced through this.

The metal door may include a body portion 20. The main body 20 may be seated and closed on the door frame 10. The main body 20 may be formed in a substantially rectangular shape corresponding to the shape of the door frame 10. The body portion 20 can be opened and closed in a casement shape. Specifically, the main body 20 may be disposed so that it can be opened in a direction in which a person intends to evacuate to an emergency exit. At this time, the main body 20 can be directly opened and closed by a person. However, on the other hand, it is possible to keep it open at normal times and close it automatically when a fire alarm system such as a building is activated.

The metal door may include a hinge 30. The hinge 30 may include a first hinge member 31 and a second hinge member 32. The first hinge member 31 may be disposed on the front side of one side of the main body 20, and the second hinge member 32 may be disposed on the front side of the door frame 10. The second hinge member 32 may be formed at a position corresponding to the position of the first hinge member 31. The first hinge member 31 may be coupled to the second hinge member 32 to couple the main body 20 to the door frame 10.

3 is a cross-sectional view of a metal door according to an embodiment of the present specification. 4 is a cross-sectional perspective view of a partial configuration of a metal door according to an embodiment of the present specification. 5 is a detailed cross-sectional view of a partial configuration of a metal door according to an embodiment of the present specification.

The body portion 20 of the metal door according to an embodiment of the present specification includes a door frame 10, a front member 120, a rear member 130, an inner frame 110, and a reinforcing member ( 140), the coupling member 150, the first blocking member 161, and the door filler 170 may be included, but may be implemented excluding some of the configurations, and other additional configurations may not be excluded. Does not.

3 to 5, the main body 20 may include an inner frame 110. The inner frame 110 may be disposed between the front member 120 and the rear member 130. The inner frame 110 may be formed along the edge of the main body 20. That is, when viewed from the front, it can be understood that it is formed in a frame shape.

The inner frame 110 may serve to support the structure of the main body 20. Since the front member 120 and the rear member 130 are formed of a thin steel plate, they are formed of a thicker metal material than the front member 120 and the rear member 130 to support the front member 120 and the rear member 130 Can be. For example, the inner frame 110 may be an electro galvanized steel sheet (Electro Galvanized Iron) may be used, the thickness may be 1.6T.

The inner frame 110 may include a first portion 111, a second portion 112, a third portion 113, and a fourth portion 114. The first portion 111, the second portion 112, and the third portion 113 may be formed by bending one steel plate.

The inner frame 110 may include a first portion 111. The first part 111 may be formed in a front-rear direction. Specifically, on the cross-section of the main body 20, the first portion 111 may extend in the front-rear direction between the front member 120 and the rear member 130. Alternatively, on the cross-section of the main body 20, the first portion 111 may include a partially curved portion according to a member coupled to the periphery, a required strength, and the like.

The inner frame 110 may include a second portion 112. The second portion 112 may extend outward from the front end of the first portion 111.

The inner frame 110 may include a third portion 113. The third portion 113 may extend rearward from the outer end of the second portion 112.

The inner frame 110 may further include a fourth portion 114. The fourth portion 114 may be bent inward at the rear end of the first portion 111 and extend forward. In other words, the fourth portion 114 may be understood as a shape in which the rear end of the first portion 111 is folded inward.

The rear end of the first portion 111 and the rear member 130 may be in contact with each other. In this case, if there is no fourth part 114, the rear end of the first part 111 may be formed to have an angle, and when the rear end of the first part 111 directly contacts the rear member 130, the rear member It can damage (130). Accordingly, this problem can be prevented by forming the fourth portion 114 by folding the end of the first portion 111.

In addition, since the body part 20 of the first part 111 receives a lot of impact and pressure when it is closed, if the first part 111 is formed of only one layer of steel plate, the first part 111 There is a possibility that the end of the portion 111 is easily deformed. Therefore, when the fourth part 114 is formed, since the rear end of the inner frame 110 is formed of two layers of steel plate, strength can be increased, and durability and reliability of the metal door can be improved through this.

In addition, the fourth portion 114 may serve as an arrangement guide of the reinforcing member 140. When the rear member 130 is coupled to the inner frame 110, the second side portion 132 of the rear member 130, the second bent portion 133, the inner frame 110, and the reinforcing member 140 The rear member 130 may be coupled to the inner frame 110 by a coupling member 150 passing through ). In this case, a coupling hole through which the coupling member 150 may pass may be formed at positions corresponding to each other in the rear member 130, the inner frame 110, and the reinforcing member 140. In this case, when the reinforcing member 140 is seated inside the inner frame 110 during the manufacturing process, the fourth portion 114 may guide the position of the reinforcing member 140. Therefore, since the process of separately aligning the reinforcing member 140 to the inner frame 110 may be omitted, productivity may be improved.

The body part 20 may include a front member 120. The front member 120 may form the front portion 121 of the body portion 20. The front member 120 may be formed of a metal material. The front member 120 may be formed to surround a part of an inner surface of the third part 113 of the inner frame 110, an outer surface of the third part 113, and a front surface of the second part. Specifically, the front member 120 may include a front portion 121, a first side portion 122, and a first bent portion 123. The front portion 121, the first side portion 122, and the first bent portion 123 may be formed by extending and/or bending one metal plate.

The front member 120 may include a front portion 121. The front portion 121 may be disposed on the front surface of the body portion 20. That is, the front portion 121 may be understood as forming the front surface of the body portion 20. The front part 121 may be disposed in front of the second part 112 of the inner frame 110. The front part 121 may extend to an outer end of the second part 112 of the inner frame 110. In this case, the front part 121 may be adjacent to the second part 112 of the inner frame 110. However, unlike this, when a separate member is disposed between the front portion 121 and the second portion 112 of the inner frame 110, the front portion 121 and the second portion of the inner frame 110 ( 112) may not be adjacent.

The front member 120 may include a first side portion 122. The first side portion 122 may extend rearward from an outer end of the front portion 121. In this case, the first side portion 122 may extend in a straight line to the rear, or may extend in a curved line.

The first side portion 122 may be disposed outside the third portion 113 of the inner frame 110. That is, the front member 120 may be understood in a form in which the front portion 121 extends to surround the outer surface of the second portion 112 and the outer surface of the third portion 113 of the inner frame 110. In this case, the first side portion 122 may be adjacent to the outer surface of the third portion 113 of the inner frame 110. However, unlike this, when a separate member is disposed between the first side portion 122 and the third portion 113 of the inner frame 110, other than the first side portion 122 and the third portion 113 The sides may not be adjacent.

The front member 120 may include a first bent portion 123. The first bent part 123 may be bent at the rear end of the first side part 122. In this case, the first bent portion 123 may be disposed inside the third portion 113 of the inner frame 110. That is, it may be understood that the third portion 113 of the inner frame 110 is disposed between the first side portion 122 and the first bent portion 123.

The first bent part 123 may be adjacent to the inner surface of the third part 113 of the inner frame 110. However, unlike this, when a separate component or member is disposed between the first bent part 123 and the third part 113 of the inner frame 110, the first bent part 123 and the third part ( 113) may not be adjacent.

As described above, the front member 120 extends to the inner surface of the third portion 113 along the outer surface of the second portion 112 and the side surface of the third portion 113 of the inner frame 110 and/ Alternatively, it may be bent to wrap the inner frame 110. At this time, since the third portion 113 of the inner frame 110 is fixed by the first side portion 122 and the first bent portion 123 of the front member 120, the front surface without a separate fixing member or welding process The member 120 and the inner frame 110 may be fixed. In this way, it is possible to improve productivity by simplifying the manufacturing process.

Alternatively, a separate insulating member (not shown) having heat insulating performance may be disposed between the front member 120 and the inner frame 110. The heat insulating member (not shown) may be coupled between the inner frame 110 and the front member 120 without a separate adhesive or coupling member 150 while the inner frame 110 and the front member 120 are coupled. The heat insulating member (not shown) may be disposed in front of the second portion 112 of the inner frame 110 and/or outside the third portion 113 of the inner frame 110. The heat insulating member may be formed of a material such as ceramic.

The body part 20 may include a rear member 130. The rear member 130 may form the rear portion 131 of the body portion 20. The rear member 130 may be formed of a metal material. The rear member 130 may include a rear portion 131, a second side portion 132, and a second bent portion 133. The rear portion 131, the second side portion 132, and the second bent portion 133 may be formed by extending and/or bending one metal plate.

The rear member 130 may include a rear portion 131. The rear portion 131 may be disposed on the rear surface of the body portion 20. That is, the rear portion 131 may be understood as forming the rear surface of the body portion 20. The rear portion 131 may extend to a portion in which the first portion 111 of the inner frame 110 is disposed.

The rear member 130 may include a second side portion 132. The second side portion 132 may extend forward along the outer surface of the first portion 111 from an outer end of the rear portion 131. That is, it may be understood that the rear member 130 has the first part 111 of the inner frame 110 inside and the edge is bent forward to extend.

The rear member 130 may include a second bent portion 133. The second bent portion 133 may be bent rearward from the front end of the second side portion 132. In this case, the second bent portion 133 may be disposed between the second side portion 132 and the first portion 111. Since the rear member 130 is formed by processing a relatively thin metal plate, the rigidity of the end may be weakened. That is, when the second side portion 132 is directly adjacent to and coupled to the first portion 111 of the inner frame 110, the second side portion 132 may be bent and damaged by an external force, and the durability of the metal door is increased. It can be degraded. Therefore, when the end of the rear member 130 is bent once to form the second bent portion 133, and when the rear member 130 is coupled to the inner frame 110, the coupling member 150 is When combined through the 132 and the second bent portion 133, the durability of the metal door may be improved.

The body part 20 may include a coupling member 150. The coupling member 150 may couple the rear member 130 to the inner frame 110. Specifically, the coupling member 150 passes through the second side portion 132 of the rear member 130, the second bent portion 133, and the first portion 111 of the inner frame 110 in the lateral direction. The rear member 130 may be coupled to the inner frame 110. For example, a rivet may be used for the coupling member 150. In this case, in order to sufficiently secure the coupling force of the coupling member 150, the body portion 20 may include a reinforcing member 140.

The body part 20 may include a reinforcing member 140. The reinforcing member 140 may be disposed inside the first portion 111 of the inner frame 110. In this case, the reinforcing member 140 may be disposed adjacent to the front end of the fourth portion 114 of the inner frame 110. The reinforcing member 140 may sufficiently secure the coupling force of the coupling member 150. In addition, the reinforcing member 140 may support the inner frame 110 inside the inner frame 110 to reinforce the structure of the metal door. Accordingly, the thickness of the reinforcing member 140 may be thicker than the thickness of the inner frame 110.

The reinforcing member 140 may be formed in a substantially rectangular frame shape along the circumference of the metal door adjacent to the inner frame 110 in order to structurally support the inner frame 110. However, unlike this, when the strength itself of the inner frame 110 is sufficiently secured by adjusting the thickness or shape of the inner frame 110, the reinforcing member 140 is only at the position where the coupling member 150 is coupled. It can also be arranged selectively.

The body part 20 may include a first blocking member 161. The first blocking member 161 may be disposed between the second side portion 132 of the rear member 130 and the first bent portion 123 of the front member 120. That is, since the inner frame 110 is formed in an approximate'c' shape, three sides of the main body portion 20 have the second side portion 132 of the rear member 130 and the second side portion 132 of the inner frame 110. The first groove portion 181 formed of the second portion 112 and the first bent portion 123 of the front member 120 may be formed. It can be understood that the first blocking member 161 is disposed in the first groove 181.

When viewed from the front, the first blocking member 161 may be formed along the circumference of the door frame 10. Specifically, the first blocking member 161 may include a fitting protrusion. Since the first blocking member 161 is formed of a rubber material or a soft synthetic resin material and has elasticity, the first blocking member 161 is press-fit into the first groove part 181 formed in the body part 20 with a fitting protrusion. Can be combined in any way. Alternatively, the shape and/or size of the first blocking member 161 may be variously formed according to the specification and/or size of the metal door.

The first blocking member 161 may include a portion protruding to the rear of the first bent portion 123. Specifically, the height of the first blocking member 161 may be formed larger than the depth of the first groove portion 181 formed in the body portion 20. When the first blocking member 161 is coupled to the first groove portion 181 formed in the body portion 20, a portion protruding further rearward than the first bent portion 123 may be formed. Accordingly, when the main body part 20 is seated and closed on the door frame 10, the protruding portion of the first blocking member 161 may be in close contact with the door frame 10, and more specifically, compressed. Through this, both spaces of the metal door can be airtight to each other, and smoke can be prevented from leaking from one space of the metal door to the other space in case of a fire.

In addition, since the door frame 10 and the main body 20 are formed of a metal material, when the main body 20 is closed and contacted with the door frame 10 as it is, noise may be caused. In this case, the first blocking member 161 may serve as a buffer and reduce noise.

The first blocking member 161 may be a rubber packing made of a flame retardant material or a gasket made of a flame retardant material. In addition, the first blocking member 161 may include a hollow portion on a cross section. When the inside of the second blocking member 162 is hollow, it is easy to change the shape of the second blocking member 162 so that it may be easily coupled to the second groove portion 182 of the door frame 10. In addition, when the body portion 20 is closed due to the hollow portion, the thermal insulation performance may be improved, and condensation generation may be reduced through this.

The metal door according to the exemplary embodiment of the present specification may include a first blocking member 161 disposed on the main body 20 and a second blocking member 162 disposed on the door frame 10. That is, since the two blocking members 161 and 162 are disposed between the door frame 10 and the main body 20, spaces on both sides of the metal door can be double-sealed. Therefore, a defect occurs in a part of any one of the blocking members 161 and 162, so that when the fire door is closed, it is not properly contacted with the main body 20, or a part of the blocking members 161 and 162 Even if the airtight performance is deteriorated due to damage or loss, the remaining blocking members 161 and 162 can maintain the airtight performance. Furthermore, if the airtightness of the metal door is improved, smoke, noise, etc. can be effectively prevented, thereby improving the reliability of users.

In addition, fire doors are often in contact with outside air, and condensation may occur when the thermal insulation performance of the gap between the door frame 10 and the main body 20 is deteriorated. If condensation occurs on the fire door, it can cause corrosion of the metal door formed of a metal material, which can damage the durability of the metal door. However, when the blocking member having thermal insulation performance, such as the metal door according to the exemplary embodiment of the present specification, is formed in a double layer, the thermal insulation performance can be further maximized in the gap between the door frame 10 and the main body 20, and thus Accordingly, the occurrence of condensation can be prevented more effectively.

The main body 20 may include a door filler 170. The door filler 170 may be formed of a material having high thermal insulation performance. For example, mineral wool, glass wool, asbestos or fiberglass may be filled in a honey comb. The door filler 170 is disposed inside the fire door to improve the insulation performance of the metal door, thereby preventing condensation from occurring on the front and/or rear of the main body 20. Furthermore, since the door filler 170 blocks heat transfer, fire protection may be improved.

6 is a detailed cross-sectional view of a partial configuration of a metal door according to another embodiment of the present specification.

The detailed configuration of a metal door according to another embodiment of the present specification according to FIG. 6, which is not described below, may be understood to be the same as the detailed configuration of the metal door according to the exemplary embodiment of the present specification according to FIGS. 1 to 5.

Referring to FIG. 6, the front member 220 may include a third bent portion 224. The third bent portion 224 may be bent at the front end of the first bent portion 223 and extend rearward. In this case, the third bent portion 224 may be disposed between the third portion 113 of the inner frame 110 and the first bent portion 223.

Since the front member 220 is formed of a thin metal plate, if the end is formed in a single layer, the rigidity may not be sufficient. In addition, since the first bent portion 223 is a portion that is immediately exposed to the outside when the first blocking member 161 is separated, if the edge of the sharp metal plate is exposed at the end of the first bent portion 123, safety problems may Can occur.

Accordingly, in the metal door according to another exemplary embodiment of the present specification, two layers of metal plates including the third bent portion 224 may be disposed inside the third portion 113 of the inner frame 110. Through this, the durability of the front member 220 can be improved, the fixing force of the front member 220 and the inner frame 110 can be improved, and further, the stability of the user or the manufacturer of the metal door can be further secured. have.

7 to 10 are cross-sectional perspective views showing a manufacturing process of a metal door according to an embodiment of the present specification.

7 is a cross-sectional perspective view of the front member 120. 8 is a cross-sectional perspective view showing that the inner frame 110 is coupled to the front member 120 of the main body 20. 9 is a cross-sectional perspective view showing that the rear member 130 and the reinforcing member 140 are coupled to the inner frame 110. 10 is a cross-sectional perspective view showing that the first blocking member 161 is coupled.

The step of forming the front member 120 forming the front portion 121 of the body portion 20 and the rear member 130 forming the rear portion 131 of the body portion 20 may be included. The front member 120 and the rear member 130 may be formed by bending a metal plate. At this time, it can be bent from the edge of the metal plate.

The front member 120 may first bend the edge of the metal plate to form the first bent portion 123, and then bend the inside of the first bent portion 123 to form the first side portion 122. . The rear member 130 may first bend the edge of the metal plate to form the second bent portion 133, and then bend the inside of the second bent portion 133 to form the second side portion 132.

7 and 8, a reinforcing member 140 may be disposed adjacent to the inner frame 110. In this case, since the reinforcing member 140 is seated on the end of the fourth portion 114 of the inner frame 110, the fourth portion 114 may serve as a position guide of the reinforcing member 140. A separate alignment process for aligning the coupling hole through which the coupling member 150 passes may not be required.

After the reinforcing member 140 is disposed inside the inner frame 110, the front member 120 formed by bending the metal plate may be coupled to the inner frame 110. At this time, the third portion 113 of the inner frame 110 is sandwiched between the first side portion 122 and the first bent portion 123 of the front member 120 so that the inner frame 110 is connected to the front member 120. Can be fixed to That is, since the inner frame 110 is simply coupled to the front member 120, it may be coupled to the front member 120 without a separate fixing member or welding process. Therefore, it is possible to improve productivity by simplifying the manufacturing process.

Referring to FIG. 8, after the front member 120 is coupled to the inner frame 110, the rear member 130 may be disposed from the rear along the outer surface of the first portion 111 of the inner frame 110. have. In this case, since the front ends of the second side portion 132 and the second bent portion 133 of the rear member 130 are adjacent to the second portion 112 of the inner frame 110, the coupling member 150 penetrates There may be no need for a separate alignment process for aligning the coupling holes.

Meanwhile, before disposing the rear member 130 on the inner frame 110, the door filler 170 may be disposed between the front member 120 and the rear member 130.

Referring to FIG. 9, after the rear member 130 is disposed adjacent to the outer surface of the second side portion 132 of the inner frame 110, the rear member 130 is attached to the inner frame ( 110). Specifically, the coupling member 150 may be coupled by sequentially passing through the second side portion 132 of the rear member 130 and the reinforcing member 140 of the inner frame 110. Through this, the rear member 130 may be coupled to the inner frame 110. At this time, the second side portion 132 of the rear member 130, the second bent portion 133, the inner frame 110, and the coupling member 150 can pass through the reinforcing member 140 The hole is formed in advance, and the coupling member 150 may pass through the hole. Alternatively, a coupling hole may be formed while the coupling member 150 is coupled to the second side portion 132, the second bent portion 133, the inner frame 110, and the reinforcing member 140.

Referring to FIG. 10, after the rear member 130 is coupled to the inner frame 110, the first bent portion 123 of the front member 120 and the second side portion 132 of the rear member 130 1 The blocking member 161 can be fitted and coupled. Specifically, since the inner frame 110 is formed in an approximately'c' shape, the main body 20 has three sides through the process, the second side portion 132 of the rear member 130 and the inner frame 110 A first groove portion 181 including the second portion 112 of) and the first bent portion 123 of the front member 120 may be formed. The first blocking member 161 may be fitted into the first groove portion 181 formed in the body portion 20.

Certain or other embodiments of the present specification described above are not mutually exclusive or distinct from each other. Certain or other embodiments of the present specification described above may have their respective configurations or functions used in combination or combination.

For example, it means that a configuration A described in a specific embodiment and/or a drawing may be combined with a configuration B described in another embodiment and/or a drawing. That is, even if the combination between the components is not directly described, the combination is possible except for the case where the combination is not described.

The above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of this specification should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of this specification are included in the scope of this specification.

10: door frame 20: main body
30: hinge 31: first hinge member
32: second hinge member 40: opening
110: inner frame 111: first part
112: second part 113: third part
114: fourth part 120: front member
121: front portion 122: first side portion
123: first bent portion 130: rear member
131: rear portion 132: second side portion
133: second bent portion 140: reinforcing member
150: coupling member 161: first blocking member
162: second blocking member 170: door filler
181: first groove 182: second groove
220: front member 221: front portion
222: first side portion 223: first bent portion
224: third bend

Claims (14)

In a metal door where the main body is seated on the door frame and closed,
A front member forming a front portion of the main body;
A rear member forming a rear portion of the main body;
A first portion formed in a front-rear direction on a cross-section of the body portion, a second portion extending outward from a front end of the first portion, a third portion extending rearward from an outer end of the second portion, and the second portion An inner frame including a fourth portion bent inward at the rear end of the first portion and extending forward, and formed along an edge of the body portion; And
A reinforcing member disposed inside the first portion and adjacent to a front end of the fourth portion,
The front member is a metal door formed to surround a portion of an inner surface of the third portion, an outer surface of the third portion, and a front surface of the second portion. The method of claim 1,
The front member includes a front portion disposed in front of the body portion and disposed in front of the second portion, a first side portion extending rearward from an outer end of the front portion and disposed outside the third portion, and the second 1 A metal door including a first bent portion bent at the rear end of the side portion and disposed inside the third portion. The method of claim 2,
The rear member includes a rear portion disposed on a rear surface of the main body portion, and a second side portion extending forwardly along an outer surface of the first portion from an outer end of the rear portion. The method of claim 3,
The rear member is a metal door including a second bent portion bent rearward from a front end of the second side portion and disposed between the second side portion and the first portion. The method of claim 4,
A metal door including a first blocking member disposed between the second side portion and the first bent portion. The method of claim 5,
The first blocking member is a metal door including a portion protruding to the rear of the first bent portion. The method of claim 6,
When the main body is closed, the first blocking member is in close contact with the door frame. delete delete The method of claim 4,
A metal door including a coupling member penetrating the second side portion, the second bent portion, the first portion, and the reinforcing member to couple the rear member to the inner frame. The method of claim 2,
The front member includes a third bent portion bent at a front end of the first bent portion and extending rearward,
The third bent portion is a metal door disposed between the third portion and the first bent portion. In the method of manufacturing a metal door in which the main body is seated and closed on a door frame,
Forming a front member forming a front portion of the body portion and a rear member forming a rear portion of the body portion;
Disposing a reinforcing member inside the inner frame;
Coupling an inner frame to the front member; And
Including the step of coupling the rear member to the inner frame,
On the cross-section of the body portion, the inner frame includes a first portion formed in a front-rear direction, a second portion extending outward from a front end of the first portion, and a third portion extending rearward from an outer end of the second portion. Contains parts,
The front member includes a front portion disposed in front of the body portion and disposed in front of the second portion, a first side portion extending rearward from an outer end of the front portion and disposed outside the third portion, and the second 1 including a first bent portion bent at the rear end of the side portion and disposed on the inner surface of the third portion,
The rear member includes a rear portion disposed on a rear surface of the body portion, and a second side portion extending forwardly along an outer surface of the first portion at an outer end of the rear portion,
The inner frame is coupled to the front member by fitting the third portion between the first side portion and the first bent portion,
The rear member and the reinforcing member are a method of manufacturing a metal door in which a coupling member sequentially passes through the second side portion, the first portion, and the reinforcing member to be fixed to the inner frame. delete The method of claim 12,
After coupling the rear member to the inner frame, a method of manufacturing a metal door comprising the step of fitting and coupling a first blocking member between the first bent portion and the second side portion.

Images