JP5046677B2 - Steel door frame - Google Patents

Description

  The present invention relates to a steel door frame. Specifically, for example, the present invention relates to an entrance door of a reinforced concrete building.

  Conventionally, metal joinery has been used for joinery outside the building. Since this metal joinery has less distortion of doors and door frames due to aging than wooden joinery, airtightness inside the building can be maintained for a long period of time.

  However, since metal fittings maintain the airtightness inside the building, for example, when the outside air temperature outside the building is low, such as in winter, and the room temperature inside the building is high, the room temperature is maintained high. The surface of the metal joinery is cooled by the low outside air temperature. As a result, the surface of the metal joinery has a dew point temperature or lower, and condensation occurs on the surface of the metal joinery.

  In order to solve this problem, metal fittings that prevent the occurrence of condensation on the surface of the metal fittings by providing the metal fittings with heat insulation performance have been proposed.

As such a metal joinery, for example, in an aluminum joinery, there is an aluminum joinery in which an outdoor frame member and an indoor frame member are connected by a connecting screw via a heat insulating material ( Patent Document 1).
JP 7-229370 A

  However, in the aluminum joinery proposed in Patent Document 1, the outdoor frame material and the indoor frame material are connected by a connecting screw, so the outdoor outdoor temperature is low and the indoor room temperature is high. The heat of the frame material on the indoor side is taken away by the frame material on the outdoor side through the connection screw, and there is a possibility that condensation occurs on the surface of the frame material on the indoor side around the connection screw.

  In addition, in entrance doors such as apartment houses of a predetermined size or more, fireproof performance is required for the door frame of the entrance door, and aluminum fittings cannot be used. Therefore, the door frame must be made of steel. is there. However, if the door frame is made of steel, the weight increases, so it is necessary to ensure the strength after the door frame is attached to the building.

  An object of the present invention is to provide a steel door frame that prevents the occurrence of dew condensation and can ensure strength after being attached to a building.

(1) A steel fitting for partitioning the exterior and interior of a building, wherein the door frame includes an outer frame attached to the exterior side of the building and an interior side of the building. An inner frame attached to the building, wherein the outer frame and the inner frame are separated from each other, the outer frame is fixed to the building by outer frame fixing bars, and the inner frame is fixed to the building by inner frame fixing bars. The outer frame and the inner frame are in contact with each other through an insulating material, and the outer frame and the inner frame are attached to the building before the outer frame and the inner frame are attached to the building. A fixing member for connecting the frame and the inner frame to each other is provided, and the fixing member is removed from the outer frame and the inner frame after the outer frame and the inner frame are attached to the building, and the contacting part is , Door contact with the peripheral edge of the door of the steel fitting A door frame of a steel fitting that is formed in a portion and is provided with an elastic body that covers the portion from which the fixing member is removed.

  According to the invention of (1), the door frame of the steel fitting that partitions the outside and the inside of the building is separated from each other by the outer frame that is attached to the outside of the building and the inner frame that is attached to the inside of the building, Each was fixed to the building. Thereby, since a screw or the like for connecting the outer frame and the inner frame is not used, it is possible to prevent heat from being taken away from the inner frame to the outer frame via the screw or the like and the surface temperature of the inner frame being lowered. Moreover, since the outer frame and the inner frame are each fixed to the building, the weight of the door frame can be distributed and fixed. Therefore, it is possible to provide a steel door frame that prevents the occurrence of condensation and can ensure the strength after being attached to a building.

The invention of (1) is characterized in that the outer frame and the inner frame have a portion in contact with each other through an insulating material.

According to the invention of (1), since the outer frame and the inner frame have portions that are in contact with each other through the insulating material, the outer frame and the inner frame are fixed to the building, and the outer frame and the inner frame are further fixed. By making the contact through the insulating material, the strength of the entire door frame can be improved, and by making the contact through the insulating material, the heat of the inner frame can be prevented from being taken away by the outer frame. Therefore, it is possible to provide a steel door frame that reliably prevents the occurrence of condensation and that can ensure higher strength after being attached to a building.

In the invention of (1), a fixing member that connects the outer frame and the inner frame to each other before the outer frame and the inner frame are attached to the building is provided at the contacting portion. The outer frame and the inner frame are removed from the outer frame and the inner frame after being attached to the building.

According to the invention of (1), since the outer frame and the inner frame are connected by the fixing member before being attached to the building, the door frame can be easily transported and attached, and the outer frame and the inner frame are Since the fixing member is removed after being attached to the building, heat can be prevented from being taken away from the inner frame to the outer frame by the fixing member, thereby reducing the heat insulation effect. Therefore, while improving the workability of the door frame, it is possible to provide a steel door frame capable of preventing the occurrence of condensation and securing the strength after being attached to the building.

Further, in the invention of (1), the contacting portion is formed in a door contact portion that is in contact with a peripheral edge of the door of the steel fitting, and the door covering portion has an elastic body that covers the portion from which the fixing member is removed. It is provided.

According to invention of (1), since the elastic body was provided in the door stop part, the impact which a door frame receives by closing a door can be absorbed. And since the contact | abutting part was formed in this door stop part, even when using a screw as a fixing member, the screw hole after removing this screw can be covered with an elastic body. Therefore, it is possible to provide a steel door frame that can prevent the occurrence of condensation and secure the strength after being attached to a building while improving the design of the door frame.

(2) The outer frame and the inner frame have a substantially rectangular cross-sectional shape, and the outer frame and the inner frame have substantially the same cross-sectional area. Joiner door frame.

According to the invention of (2), since the cross-sectional shapes of the outer frame and the inner frame are substantially rectangular and the cross-sectional areas thereof are substantially the same, even if the door frame is made of steel, bending is facilitated. Therefore, it is possible to provide a steel door frame that can prevent the occurrence of condensation while suppressing the manufacturing cost and can ensure the strength after being attached to the building.

(3) The outer frame and the inner frame are formed in a hollow body shape, and a heat insulating material is filled in the outer frame and the inner frame (1) or (2) The door frame of steel joinery as described in 1.

According to the invention of (3), since the outer frame and the inner frame are formed in a hollow body shape and the inside is filled with the heat insulating material, the heat insulating performance of the outer frame and the inner frame is improved, and the surface temperature of the inner frame is reduced. Decline can be prevented. Therefore, it is possible to provide a steel door frame that reliably prevents the occurrence of condensation and can ensure strength after being attached to a building.

  ADVANTAGE OF THE INVENTION According to this invention, while preventing generation | occurrence | production of dew condensation, the steel door frame which can ensure intensity | strength after attaching to a building can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same constituent elements are denoted by the same reference numerals, and the description thereof is omitted or simplified.

  FIG. 1 is a front view of the exterior side of a building of a front door according to an embodiment of the present invention. As shown in FIG. 1, the entrance door 1 has a substantially rectangular door frame 10 on which a door 5 formed with a dimension substantially the same as the internal dimension of the door frame 10 is suspended. The door frame 10 is made of steel. The door frame 10 is provided with an outer frame 11 on the outside of the building.

  FIG. 2 is a front view of the interior side of the building of the entrance door according to the embodiment of the present invention. As shown in FIG. 2, the door frame 10 is provided with an inner frame 12 on the inner side of the building.

  FIG. 3 is a vertical sectional view of the entrance door according to the embodiment of the present invention. FIG. 4 is a horizontal sectional view of the front door according to the embodiment of the present invention. As shown in FIGS. 3 and 4, the door frame 10 includes an outer frame 11, an inner frame 12, an insulating material 15, and a gasket 18.

  The outer frame 11 is formed by bending a steel plate body to form a hollow body portion having a substantially rectangular cross-sectional shape, and the hollow body portion is filled with a heat insulating material 30. A part of the plate-like body forming the hollow body-like portion has an angle portion bent toward the inner side. The outer frame 11 is fixed to the building frame 3 by outer frame fixing bars 112, and the periphery of the outer frame fixing bars 112 is covered with mortar 4.

  The inner frame 12 is formed by bending a steel plate-like body to form a hollow body-shaped portion having a substantially rectangular cross-sectional shape, and the hollow body-shaped portion is filled with a heat insulating material 30. Further, the inner frame 12 is arranged so that a part of the inner frame 12 protrudes inward from the outer frame 11, and the protruding portion overlaps the angle portion of the outer frame 11. Further, the inner frame 12 is fixed to the building frame 3 by the inner frame fixing bars 122, and the periphery of the inner frame fixing bars 122 is covered with the mortar 4.

  The insulating material 15 is disposed between the angle portion of the outer frame 11 and the protruding portion of the inner frame 12. In other words, the outer frame 11 and the inner frame 12 have a portion in contact with the insulating material 15 therebetween.

  Further, screw holes 22 are formed on the outer frame 11, the inner frame 12, and the insulating material 15 at predetermined intervals on a concentric circle. Screws 20 serving as fixing members for connecting the outer frame 11 and the inner frame 12 to each other are screwed into the screw holes 22 when the door frame 10 is carried in and when the door frame 10 is carried in. The screws 20 are removed from the outer frame 11, the inner frame 12, and the insulating material 15 after the door frame 10 is attached to the building housing 3.

  The gasket 18 is provided in a direction facing the door 5 at the angle portion of the outer frame 11, and is in contact with the peripheral edge of the door 5 in a state where the door 5 is closed. As described above, the door contact portion 16 that contacts the peripheral edge of the door 5 is configured by the angle portion of the outer frame 11, the protruding portion of the inner frame 12, the insulating material 15, and the gasket 18.

  Next, a method for attaching the door frame 10 will be described. The door frame 10 is carried into the mounting position of the door frame 10 in a state where the screws 20 are screwed into the screw holes 22 of the outer frame 11, the inner frame 12, and the insulating material 15. Next, the outer frame 11 is welded by the outer frame fixing bar 112 and the inner frame 12 is welded by the inner frame fixing bar 122 to the anchor provided in advance in the building frame 3 in a state where the screw 20 is screwed. The outer frame 11 and the inner frame 12 are fixed to the building housing 3 respectively. Then, the door frame 10 is attached to the building frame 3 by filling the gap between the building frame 3 and the door frame 10 with the mortar 4. Next, after removing the screw 20 from the door frame 10, the gasket 18 is attached.

  According to the present embodiment, the door frame 10 of the entrance door 1 that partitions the exterior and interior of the building is separated from each other by the outer frame 11 attached to the exterior side of the building and the inner frame 12 attached to the interior side of the building. , Each fixed to the building frame 3. Thereby, since a screw or the like for connecting the outer frame 11 and the inner frame 12 is not used, heat is removed from the inner frame 12 to the outer frame 11 through the screw or the like, and the surface temperature of the inner frame 12 is lowered. Can be prevented. Moreover, since the outer frame 11 and the inner frame 12 are each fixed to the building housing 3, the weight of the door frame 10 can be dispersed and fixed. Therefore, it is possible to provide a steel door frame that prevents the occurrence of condensation and can ensure the strength after being attached to a building.

  Further, since the cross-sectional shapes of the outer frame 11 and the inner frame 12 are substantially rectangular and the cross-sectional areas thereof are substantially the same, even if the door frame 10 is formed of steel, bending is facilitated. Therefore, it is possible to provide a steel door frame that can prevent the occurrence of condensation while suppressing the manufacturing cost and can ensure the strength after being attached to the building.

  Moreover, since the outer frame 11 and the inner frame 12 are formed in a hollow body shape and filled with the heat insulating material 30, the heat insulating performance of the outer frame 11 and the inner frame 12 is improved, and the surface temperature of the inner frame 12 is lowered. Can be prevented. Therefore, it is possible to provide a steel door frame that reliably prevents the occurrence of condensation and can ensure strength after being attached to a building.

  In addition, since the outer frame 11 and the inner frame 12 have a portion in contact with each other through the insulating material 15, the outer frame 11 and the inner frame 12 are fixed to the building housing 3, and the outer frame 11 and the inner frame 12 are further fixed. 12 is brought into contact with the insulating material 15 so that the strength of the door frame 10 as a whole can be improved, and the heat of the inner frame 12 is taken away by the outer frame 11 by making the contact with the insulating material 15. Can be prevented. Therefore, it is possible to provide a steel door frame that reliably prevents the occurrence of condensation and that can ensure higher strength after being attached to a building.

  Moreover, since the outer frame 11 and the inner frame 12 are connected by the screw 20 before being attached to the building housing 3, the outer frame 11 and the inner frame 12 can be easily transported and attached. Since this screw 20 is removed after it is attached to the building frame 3, it is possible to prevent heat from being removed from the inner frame 12 to the outer frame 11 by this screw 20 to reduce the heat insulation effect. Therefore, while improving the workability of the door frame, it is possible to provide a steel door frame capable of preventing the occurrence of condensation and securing the strength after being attached to the building.

  Moreover, since the gasket 18 is provided in the door stop part 16, the impact which the door frame 10 receives by closing the door 5 can be absorbed. And since the part which the outer frame 11 and the inner frame 12 contact | abutted was formed in this door stop part 16, even when using the screw 20, for example, the screw hole 22 after removing this screw 20 is used as the gasket 18. Can be covered. Therefore, while improving the design of the door frame 10, it is possible to provide a steel door frame that can prevent the formation of condensation and secure the strength after being attached to a building.

  The present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

It is a front view of the exterior side of the building of the entrance door which concerns on embodiment of this invention. It is a front view of the inside side of the building of the entrance door which concerns on embodiment of this invention. It is sectional drawing of the perpendicular direction of the entrance door which concerns on embodiment of this invention. It is sectional drawing of the horizontal direction of the front door which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Entrance door 3 Building frame 4 Mortar 5 Door 10 Door frame 11 Outer frame 12 Inner frame 15 Insulation material 16 Door contact part 18 Gasket 20 Screw 22 Screw hole 30 Heat insulating material 112 Outer frame fixing bar 122 Inner frame fixing bar

Claims (3)

A steel fitting that divides the exterior and interior of a building, and in a door frame in which one door is suspended,
The door frame includes an outer frame attached to the outside of the building,
An inner frame attached to the inner side of the building,
The outer frame and the inner frame are separated from each other;
The outer frame is fixed to the building by outer frame fixing bars,
The inner frame is fixed to the building by an inner frame fixing bar ,
The outer frame and the inner frame have a portion in contact with an insulating material,
The contact portion is provided with a fixing member for connecting the outer frame and the inner frame to each other before the outer frame and the inner frame are attached to the building,
The fixing member is removed from the outer frame and the inner frame after the outer frame and the inner frame are attached to the building,
The contacting part is formed in a door contact part in contact with a peripheral edge of the door of the steel fitting,
The door frame of the steel fitting provided with the elastic body which covers the part from which the said fixing member was removed in the said door stop part . The outer frame and the inner frame have a substantially rectangular cross-sectional shape,
The door frame of a steel fitting according to claim 1, wherein the outer frame and the inner frame have substantially the same cross-sectional area. The outer frame and the inner frame are formed in a hollow body shape,
The door frame for steel fittings according to claim 1 or 2, wherein the outer frame and the inner frame are filled with a heat insulating material.

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