JP2008106471A - Steel door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the indoor-side heat insulating property of a steel door frame which is installed on the assumption that it may be renovated in the future. <P>SOLUTION: The steel door frame A is formed of a base frame 1 which is to be fixed to a concrete skeleton 8, and an annexed frame 3 which is screwed to and integrated with the base frame 1. The steel door frame A serves as a double frame in which the newly annexed frame is installed by removing a screw 6 of the annexed frame 3. A position to fix the annexed frame 3 to the base frame 1 corresponds to a portion in which an indoor-side L-shaped portion 15 of the base frame 1 and an airtight-material bottom plate portion 33 of the annexed frame 3 overlap each other in the airtight-material receiving groove 14 of the door frame. A spot facing-contact portion 4 with a small area of the order of 1-4 cm<SP>2</SP>, in which a screw through-hole 41 is provided in a penetrating manner in a plane, is formed by applying press-forming to the bottom plate portion 33. The screw 6 is fixed by screwing the screw 6 into the internal thread of the L-shaped portion 15 from the screw through-hole 41. Since the base frame 1 and the annexed frame 3 are fixed together by the point contact of the facing-contact portion 4, they are thermally insulated, so that cold air can be prevented from reaching an indoor-side casing 16 of the base frame 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a steel door frame that is used to suspend and support a steel door by being installed at an entrance / exit opening in a concrete building.

  As a door frame of this type, the present inventors have proposed a door frame formed by including a base frame fixed to a housing and an attachment frame integrated with the base frame by screwing to the base frame. According to this, for example, the above-mentioned base frame is used as a permanent base frame, and the above-mentioned additional frame integrated with the base frame is removed by screwing and the installation of the replacement primary installation for the secondary installation of the new additional frame is performed. By making it a frame, the steel door is supposed to be used for simplified renovation. In other words, the service life of concrete buildings is long, such as 50 years or more, and the steel doors installed and used for this have also progressed, and the door frame may change accordingly. It is assumed that the steel door and its door frame will be refurbished in exchange, and in order to use the conventional roaring method for replacing the door frame, the generation of dust, noise, etc. due to concrete roaring can be avoided. However, if the steel door frame installed at the time of building construction is based on the above configuration, a new installation door is installed on the base frame from which the installation frame is removed at the time of renovation, and a new steel door is installed on this. Therefore, it is possible to avoid the reworking method at the time of refurbishment, and it is possible to perform future renovation efficiently in a short time by simple construction, and the merit is great.

JP 2002-61458 A

  However, in this case, screwing of the attachment frame to the base frame fixed to the housing is performed by superimposing both the fins on the base frame and the attachment frame, for example, on the outdoor side or the indoor side. And the overlapped portion of the attached frame are in surface contact with each other over the entire length in the longitudinal direction of the frame material. Therefore, the attached frame that is exposed to the outside air is cooled to cool the base frame, for example, the base frame inside the door frame. If the frame is condensed or the frame is integrated with the base frame, the frame will be cooled and exposed to the room. However, the door frame lacks heat insulation. For example, even if a future remodeling is planned as described above, the steel door frame used for a long period of time before the remodeling is planned. Insufficient performance and improvement is required .

  The present invention has been made in view of such circumstances, and the problem to be solved is to ensure the heat insulation of the base frame in the structure in which the base frame and the base frame are integrated by screwing to the base frame as described above. , It is an object of the present invention to provide a steel door frame that can be surely made as simple and as low as possible.

  In accordance with the above-mentioned problems, the present invention performs screw fixing by superposition of the base frame and the attached frame, but makes it possible to make spot contact as much as possible in the screw fixing portion without performing surface contact in the longitudinal direction of the frame material. By stopping, the contact area between the base frame and the attached frame is reduced as much as possible by the point contact, and the base frame and the base frame are screwed to the base frame to secure the heat insulation of the base frame in an integrated structure. Can be surely made as simple and as low as possible, that is, the base frame of the first aspect is fixed to the base frame and screwed to the base frame. A steel door frame formed with an attachment frame integrated with the base frame by a point contact with the base frame at a screwing position of the attachment frame and through a screw through hole in the surface. Forming a spot contact portion, and attaching the spot contact portion to the female screw of the base frame at the spot contact portion La screws screwed to is obtained by a steel door frame, characterized by comprising performing the screws.

  In addition to the above, the invention according to claims 2 and 3 can process and arrange the spot contact portion as easily as possible, and the invention according to claim 2 can make the arrangement only by pressing. In order to achieve this, the spot contact portion is formed by partially recessing the screwing position of the attachment frame by press working and providing a screw through hole in the surface. The steel door frame according to claim 1 is characterized in that the invention according to claim 3 can be arranged by an integrated process such as welding, bonding, etc., of pressing and piece members. In this manner, the spot contact portion is partially placed in a through hole portion or a notch portion by pressing at the screwing position of the attachment frame, and a screw is formed on the back surface of the through hole portion or the notch portion. A through hole was made It is obtained by a steel door frame according to claim 1, characterized in comprising formed by integrating the over scan member.

  In addition to the above, the invention described in claim 4 is a slight addition in that spot-point contact of the screwed portion is indirectly performed through a thermal breaker of a small piece of, for example, a heat insulating resin. 3. A small thermal breaker is provided at a spot contact portion of the attachment frame so that the heat insulation can be enhanced by using a member. The steel door frame described in 1. is used.

  In addition to the above, the invention according to claim 5 can form the form of a steel door frame using the base frame and the attachment frame in a short time and efficiently by renovating the future in a simple construction. In order to be able to enjoy the benefits of refurbishment, the above-mentioned base frame is used as a permanent base frame, and the above-mentioned additional frame integrated with it is removed by unscrewing and a secondary additional frame is installed. A steel door frame according to claim 1, 2 or 3, characterized in that the steel door frame is used for simplification of refurbishment by providing an auxiliary frame for replacement for installation. .

  The present invention uses each of these as the gist of the invention as means for solving the above problems.

  Since the present invention is configured as described above, the invention according to claim 1 can be screwed without superimposing the surface of the frame member in the longitudinal direction, although the screwing is performed by superposition of the base frame and the attached frame. By stopping at the point-like spot contact of the part as much as possible, the point contact reduces the contact area between the base frame and the attachment frame as much as possible, and screws the attachment to the base frame and the base frame. It is possible to provide a steel door frame that can ensure the heat insulating property of the base frame in a simplified structure as easily and as low as possible.

  In addition to the above, the invention according to claims 2 and 3 can process and arrange the spot contact portion as easily as possible, and the invention according to claim 2 can make the arrangement only by pressing. The invention according to claim 3 can be arranged by an integrated process such as welding, bonding, etc., between the press process and the piece member.

  In addition to the above, the invention described in claim 4 is a slight addition in that spot-point contact of the screwed portion is indirectly performed through a thermal breaker of a small piece of, for example, a heat insulating resin. By using a member, the heat insulation can be enhanced.

  In addition to the above, the invention according to claim 5 can form the form of a steel door frame using the base frame and the attachment frame in a short time and efficiently by renovating the future in a simple construction. It is possible to enjoy the benefits of renovation.

  Hereinafter, the present invention will be described in more detail with reference to the examples of the drawings. In FIGS. 1 to 6, A is a steel door frame, and the steel door frame A includes a base frame 1 fixed to a housing and the base frame 1. And an attachment frame 3 that is integrated with the base frame 1 by screwing to the frame 1, and is in point contact with the base frame 1 at the screwing position of the attachment frame 3. A spot contact portion 4 having a screw through hole 41 formed in the surface thereof is formed, and the screw 6 from the side of the attachment frame 3 is screwed into the female screw of the base frame 1 at the spot contact portion 4. At this time, the spot contact portion 4 of this example is partially recessed by pressing the screwing position of the attachment frame 3 and the screw through-hole 41 in the surface thereof. It is assumed that it is formed by providing a transparent structure.

  In this example, the steel door frame A is, for example, the above-described base frame 1 as a permanent base frame, and the additional frame 3 integrated therewith is removed by unscrewing and the secondary additional frame is installed secondary. It is intended to simplify the refurbishment by providing a replacement primary installation frame for the renovation of the steel door and its steel door frame assumed during the useful life of the building. Without using the twisting method that is unavoidable, the screw 6 with which the attachment frame 3 is integrated is removed, the attachment frame 3 is removed, and the new attachment frame is installed in this manner interchangeably, similarly with screws. By suspending and supporting new steel doors, that is, new steel doors with high performance by adopting new technology at the time of renovation, the new installation frame can be efficiently renovated in a short time by simple work. It is.

  The base frame 1 in the steel door frame A is, for example, a vertically long rectangular opening frame obtained by joining a steel frame material made of an upper frame material and a vertical frame material in a downward U-shape and joining a lower frame 2 to the lower end. In addition, the attachment frame 3 has a U-shaped frame in which the frame material of the upper frame material and the vertical frame material are equally long and open at the lower end, and the lower frame 2 is joined to the lower end for use. The attachment frame 3 of the U-shaped frame is fitted into the vertically long rectangular base frame so as to be integrated by screwing. The joining of the frame materials of the base frame 1 and the attachment frame 3 is as follows. This is done, for example, by welding.

  The frame material of the base frame 1 includes an upper frame material and a vertical frame material, the frame base portion 11 facing the indoor / outdoor direction, the upper frame material outside the frame base portion 11 and the wall surface of the vertical frame material. An L-shaped part bent in an L-shape on the side of the side, an outdoor bent part 12 having an upward-facing tip, for example, a screwing protrusion 13 screwed to the concrete frame on the outdoor side, and the frame base 11 on the lower side of the upper frame member on the indoor side, and on the side of the opening in the vertical frame member, one end of the airtight material receiving groove 14, that is, the lower end of the upper frame member, and the indoor end of the vertical frame member. In this example, the indoor side L-shaped portion 15 is further folded back toward the indoor side and directed toward the indoor side, and the tip thereof is formed in the upper frame member. On the upper side, it is provided with a room-side frame 16 bent and arranged on the side of the wall surface in the vertical frame member, In this case, the upper frame material and the vertical frame material in this example are formed by roll forming and integrally forming the steel material, and the length of the bottom surface portion of the airtight material receiving groove 14 of the indoor L-shaped portion is set. Except for the change, there are two types of the same shape.

  The lower frame 2 joined to the base frame 1 by these frame members includes a frame base portion 21, a downward L-shaped anchor fixing piece bent to the outside of the frame base portion 21, and a chamber of the frame base portion 21. An airtight material receiving groove 22 that is bent inwardly so as to form a U-shape with the indoor side end of the frame base portion 21, and the airtight material receiving groove 22 is folded back to the indoor side so that the upper frame material and the vertical frame material Since it is provided with a hull portion 23 having the same width as the frame, and an L-shaped anchor fixing piece similarly bent at the indoor end of the hull portion, the lower frame 2 does not require refurbishment Furthermore, in order to expose and use the lower end of the door opening frame as it is after the refurbishment, a steel material, particularly stainless steel such as 18-8 to 18-10 stainless steel, is also integrally formed by roll forming.

  On the other hand, the frame material of the attachment frame 3 includes a frame base portion 31 facing in the indoor / outdoor direction and an outer side of the frame base portion 31 in the upper frame material and the hanging base side vertical frame material. The frame base material 11 is longer than the L-shaped portion that hooks and contacts the L-shaped portion along the outdoor bent portion 12 of the frame material. Therefore, the frame base portions 11 and 31 of the frame material of the base frame 1 and the frame material of the auxiliary frame 3 An L-shaped contact portion 32 on the door suspension source side that defines a door opening frame inside the attachment frame 3 and an indoor L-shaped portion in the frame material of the base frame 1 on the indoor side of the frame base portion 31 15 is provided with an airtight material bottom plate portion 33 which forms a plate-like protruding piece on the bottom surface portion of the airtight material receiving groove 14 defined at one end by the upper frame material and While the basic structure is the same as that of the vertical frame member on the hanging side, the space between the L-shaped contact part 32 and the frame base part 31 is As a result, a door door holding portion 34 is additionally formed between the L-shaped contact portion 32 and the frame base portion 31, that is, the L-shaped contact portion 32 is disposed from the frame base portion 31 through the door door holding portion 34. At this time, the upper frame member and the vertical frame member in this example are formed by integrally forming a steel material in the same manner as the frame member and the lower frame of the base frame 1, respectively. The upper frame material and the suspension side vertical frame material have the same shape, and the members are made common. On the other hand, the door frame side frame material has the same shape except that the door door cover 34 is added. As a kind.

  The base frame 1 and the lower frame 2 are, for example, welded and fixed to an anchor 81 installed on the concrete frame 8, and a filled concrete 82 is filled between the frame 8 and the base frame 1 and the lower frame 2, for example. The upper frame member and the vertical frame member are fixed to the building by screwing the screw 6 into the filling concrete 82 from the screwing protrusion 13 and fixing it to the building, over the service life of the building. It is intended to be used as a permanent base frame and a permanent lower frame that are arranged on the premise that they are permanently installed, and the auxiliary frame 3 is fixed to the base frame 1 fixed to the building by the screws. It is supposed to be integrated.

  That is, the attachment frame 3 is integrated by screwing the frame members of the base frame 1 at a plurality of positions at a predetermined pitch in the longitudinal direction of each frame member. Screwing of the frame 3 to the base frame 1 is performed at a predetermined tens of centimeters, for example, at a predetermined tens of centimeters in the longitudinal direction of the bottom portions of the airtight material receiving grooves 14 of the upper frame material and the vertical frame material in the base frame 1 and the attached frame 3. It has been done several places.

At this time, the screws are fixed by screwing screws 6 into the female screws of the base frame 1 from the side of the attachment frame 3 at the spot contact portion 4. 3. The above-mentioned press work is spot-applied to a plurality of positions of the upper frame member and the vertical frame member, that is, a plurality of portions of the airtight material bottom plate portion 33 of the upper frame member and the vertical frame member, particularly at a predetermined pitch. Then, the corresponding portion of the airtight material bottom plate portion 33 is partially recessed on the back surface side, and a round hole through which the screw is passed or a screw through hole 41 having a long hole that allows the screwing position to be adjusted are passed through the surface. The spot contact portion 4 has a point contact as small as possible with respect to the bottom surface portion of the base frame 1 of the hermetic material receiving groove 14, for example, a small area such as a square to a circle of about 1 to ⁴ cm ² . It is made to contact by point contact. In other words, the contact between the base frame 1 and the attachment frame 3 is the point contact of the spot contact portion 4 and the indirect contact via the screw 6, and the attachment frame 3 and the base frame that are exposed to the outside by being exposed to the outdoor side. The heat conduction generated between the frame 3 and the frame 1 is suppressed or prevented as much as possible. Conduction is performed to prevent the indoor frame 16 from being cooled as much as possible. Incidentally, the attached frame 3 is not overlapped with the airtight material receiving groove 14 formed between the airtight material bottom plate portion 33 of the frame material and the base frame 1 as a plate-like protruding piece, and the indoor side of the base frame 1. Therefore, the frame material of the attachment frame 3 is formed at the outdoor portion of the outdoor frame by the L-shaped contact portion 32 hooking and contacting the outdoor bending portion 12 of the frame material of the base frame 1 on the outdoor side. Even if heat conduction occurs and the outdoor portion is cooled, point contact of the spot contact portion 4 and screwing through the screw through hole 41 are performed at the screwing position on the indoor side. Thus, it is possible to prevent conduction of cooling heat from the L-shaped portion of the hook-contact base frame 1 to the indoor frame 16.

  The steel door frame A formed in this way and installed in the building may be supported by, for example, using a door hinge 7 to suspend and support a steel door that ensures heat insulation and soundproofing. The door frame is removed by removing the attachment frame and removing the attachment frame, for example, by installing a new attachment frame having a screw fastening structure with a similar spot contact portion, and a new steel door This may be carried out so as to be suspended and supported using the door hinge 7. In the figure, reference numeral 5 denotes a steel made by fitting in the airtight material receiving grooves 14 and 22 formed by the frame material of the lower frame 2 and the base frame 1 and the attached frame 3 and resiliently contacting the steel door indoors. An airtight material 35 that secures the airtightness between the door frame A and the steel door and prevents the screws 6 from being exposed in the screw fixing portion, and the door doorrest portion 34 of the door-to-side vertical frame material in the attached frame 3 Reinforcing member to be reinforced on the inside, 83 is a caulking material arranged to cover the outdoor side screws in the base frame 1 so as to ensure the watertightness of the part, 84 is an interior finishing material arranged on the indoor side of the steel door, Reference numeral 85 denotes the fixing channel material.

  7 and 8 show another example. In this example, a steel door is suspended and supported by using a pivot hinge 7 instead of the door hinge. Is arranged in the space between the upper frame material of the base frame 1 and the attachment frame 3 and is arranged on the upper surface of the lower frame 2 to suspend and support the upper and lower ends of the steel door. At this time, the hanging frame side vertical frame member of the attachment frame 3 is formed as an inclined surface from the tip of the L-shaped contact portion toward the frame base side so that the outdoor side of the frame base portion 31 protrudes into the opening. In addition, by arranging the connecting portion so that the indoor side protrudes into the opening, and narrowing the airtight material receiving groove 14 formed together with the suspension side vertical frame material of the base frame 1, The frame base 31 of the suspension side vertical frame member is arranged so as to be in contact with the frame base 11 of the suspension side vertical frame member of the base frame 1, and is thereby suspended and supported using the pivot hinge 7. Corresponding to the fact that the position of the airtight material 5 fitted in the airtight material receiving groove 14 is different from that of the above example while ensuring the rotation radius of the suspension side end of the steel door whose center of rotation is displaced to the indoor side. The steel door can be elastically contacted indoors to ensure airtightness. A. In addition, since the members of the above example are used in common and the relationship is not different from that of the above example, the same reference numerals are given and redundant description is omitted.

  In this example, the vertical frame member of the base side of the base frame 1 and the attachment frame 3 is not limited to the hooked contact between the L-shaped part on the outdoor side and the L-shaped contact part 32, and the frame base 11, In this case, the connecting portion is separated from the vertical frame member of the base frame on the indoor side, so that the portion secures heat insulation and the spot contact portion 4 has several longitudinal directions. Similarly, it is possible to prevent the indoor frame 16 from being cooled by the point contact.

  FIG. 9 shows another example of the spot contact portion 4 formed on the frame material of the attachment frame 3, and the spot contact portion 4 in this example is designated as a screwing position of the attachment frame 3. It is formed by integrating a piece member 43 in which a through-hole portion or notch portion 42 is partially disposed by pressing and a screw through-hole 41 is provided on the back surface of the through-hole portion or notch portion 42. In the illustrated example, a notch 42 is arranged at the screwing position of the attachment frame 3 and is made of steel like the attachment frame 3, and a screw through hole 41 that is a long hole in the longitudinal direction of the attachment frame 3 is provided therethrough. The piece member 43 made of a small plate is integrated by, for example, welding. In this case as well, the spot contact portion 4 can be made point contact by making the piece member 43 as small as possible.

  FIGS. 10 and 11 show the relationship of the screwing positions of the spot contact portion 4 and the frame material of the base frame 1 to the frame material of the attachment frame, and FIG. 10 shows the spot contact portion 4 as the base frame 1. FIG. 11 shows an example in which a small piece of thermal breaker 44 is interposed in the spot contact portion 4 of the attachment frame 3.

  That is, in contrast to the direct contact shown in FIG. 10, a thermal breaker 44 as shown in FIG. 11, for example, with a small piece such as a resin sheet or a foamed resin sheet, further secures heat insulation. Thus, in each of the above examples, the heat insulating effect of the indoor frame 16 can be improved.

  Although the illustrated example is as described above, the steel door frame shall be integrated with the base frame and the attachment frame, for example, for the purpose of simplifying the construction, and the base frame and the attachment frame are screwed. Steel door frame in carrying out the present invention, including appropriately changing the position and increasing the number of screwing positions and arranging the spot contact portion at each screwing position, Specific shapes, dimensions, structures, materials, relations, additions to these, etc. of the base frame, attachment frame, spot contact part, screw through hole, piece member used as necessary, thermal breaker, etc. Various forms can be employed as long as the gist of the invention is not violated.

It is a cross-sectional view which shows the installation state of steel door frames. It is a longitudinal cross-sectional view which shows the installation state of steel door frames. It is a cross-sectional view which shows the relationship between a base frame and an attachment frame. It is a longitudinal cross-sectional view which shows the relationship between a base frame and an attachment frame. It is a disassembled perspective view which shows the relationship between a base frame and an attachment frame. It is a perspective view which shows the spot contact part in an attachment frame. It is a cross-sectional view which shows the installation state of the steel door frame which concerns on another example. It is a longitudinal cross-sectional view which shows the installation state of the steel door frame which concerns on another example. It is a perspective view which shows the spot contact part in the attachment frame which concerns on another example. It is a longitudinal cross-sectional view which shows the screwing state in a spot contact part. It is a longitudinal cross-sectional view which shows the screwing state in the spot contact part which concerns on another example.

Explanation of symbols

A steel door frame 1 base frame 11 frame base 12 outdoor bent portion 13 screwing protrusion 14 airtight material receiving groove 15 indoor side L-shaped portion 16 indoor side frame 2 lower frame 21 frame base 22 airtight material receiving groove 23 hull Part 3 Attached frame 31 Frame base part 32 L-shaped contact part 33 Airtight material bottom plate part 34 Door door stop part 35 Reinforcing member
4 Spot contact portion 41 Screw through hole 42 Notch portion 43 Piece member 44 Thermal breaker 5 Airtight material 6 Screw 7 Hinge 8 Concrete frame 81 Anchor 82 Filled concrete 83 Caulking material 84 Interior finish material 85 Channel material

Claims (5)

  A steel door frame formed by including a base frame fixed to a housing and an attachment frame integrated with the base frame by screwing to the base frame, and is based on a screwing position of the attachment frame. A spot contact portion is formed in point contact with the frame, and a screw through hole is formed in the surface, and a screw from the attached frame side is screwed into the female screw of the base frame at the spot contact portion. A steel door frame characterized by being screwed.   2. The spot contact portion is formed by partially recessing a screwing position of the attachment frame by pressing and forming a screw through hole in the surface thereof. Steel door frame as described.   A piece member in which the spot contact portion is partially provided with a through-hole portion or a notch portion at the screwing position of the attachment frame by pressing, and a screw through-hole is provided on the back surface of the through-hole portion or the notch portion. The steel door frame according to claim 1, wherein the steel door frame is formed by integrating the two.   The steel door frame according to claim 1 or 2, wherein a small piece of thermal breaker is provided at a spot contact portion of the attachment frame.   By making the above-mentioned base frame into a permanent base frame, the above-mentioned additional frame integrated with it is removed by screwing and a replacement primary installation frame for the secondary installation of a new auxiliary frame, thereby making a steel door The steel door frame according to claim 1, 2 or 3, wherein the frame is used for simplification of refurbishment.

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