JP6557758B2 - Door frame refurbishment structure and door - Google Patents

Description

  The present invention relates to a door frame refurbishment structure in which a new door frame is attached to the inside of an existing door frame that has been removed by removing an existing door, and a refurbished door using the door frame refurbishment structure.

  Conventionally, in order to renovate the entrance door and other indoor / outdoor doors at a low cost, the existing door frame that has been fixed to the building frame is removed, and the new door frame and new door are installed inside it. A method of attaching a door is being carried out.

  For example, in Patent Document 1, when a new door frame is attached to the inside of an existing door frame provided so as to protrude to the outside of the building frame, the new door frame extends to the indoor side of the door opening that overlaps the building frame. A door frame refurbishment structure is disclosed in which the extended portion is fixed to a building frame.

Japanese Patent No. 4090425

  As described above, in the configuration of Patent Document 1, an extension portion to the indoor side is provided in the new door frame in order to be fixed to the building frame. For this reason, when the interior side of the door opening is covered with a metal frame such as aluminum or a wooden wooden frame to improve the appearance, the frame protrudes inward of the extended portion. If it does so, it will become impossible to ensure the effective opening dimension of a door opening part largely, and the opening width of a new door will be restrict | limited.

  The present invention has been made in consideration of the above-described problems of the prior art, and allows a new door frame to be attached to the inside of an existing door frame in a state in which the opening dimension of the door opening is sufficiently secured. An object is to provide a refurbished structure and a refurbished door using the door frame refurbished structure.

  The door frame refurbishment structure according to the present invention is a door frame refurbishment structure in which a new door frame is attached to the inside of an existing door frame that is left after the existing door is removed, and the new door frame is located on the indoor side of the installation position. The connecting bracket is connected to the building frame, and the connecting bracket is fixed to the prospective surface of the opening of the building frame by screwing, and the frame is fixed to the new door frame. It has the frame fixing | fixed part fixed by screwing in the reverse direction to a fixing | fixed part, It is characterized by the above-mentioned.

  The refurbished door according to the present invention is characterized in that the new door is supported so as to be openable and closable by the new door frame attached in the door frame refurbished structure having the above-described configuration.

  According to such a configuration, since the fastening direction of the frame fixing part of the connecting metal fitting to the new door frame is configured in the direction opposite to the fastening direction of the frame fixing part to the building frame, the new door frame is installed at its installation position. Even if it is connected to the building frame on the indoor side, the existing door frame is suppressed in a state in which the new door frame is prevented from protruding into the door opening and the effective opening size of the door opening is sufficiently secured. A new door frame can be attached to the inside. Note that the fastening direction is the reverse direction, for example, both the fastening direction of the fastening screw for fastening the housing fixing part and the fastening screw for fastening the frame fixing part are fixed in both directions. The fastening direction by the screw may include a state with a slight angle from the opposite direction of 180 degrees.

  In the door frame refurbishment structure according to the present invention, a frame member may be provided that is disposed on the indoor side of the new door frame and covers the frame fixing portion of the connection fitting. If it does so, the frame fixing | fixed part of a connection metal fitting and the fixing screw which fixes this to a casing can be covered with a frame member, and the appearance of the indoor side of the door opening part of a refurbished door can be improved.

  In the door frame refurbishment structure according to the present invention, an angle bracket is fixed to a room-side finding surface of the frame member, and a decorative member is fixed to the angle bracket, so that the decorative member is placed in the door opening chamber. It is good also as a structure provided inside. If it does so, decorative members, such as a wooden picture frame, can be easily arrange | positioned to the room inner side of a door opening part, for example. In addition, by fixing the angle bracket to the indoor-side finding surface of the frame member, the angle bracket and the decorative member fixed to the angle bracket are prevented from projecting to the door opening, and the effective opening size of the door opening is increased. It can be secured sufficiently.

  In the door frame refurbishment structure according to the present invention, the decorative member may be provided on the indoor side of the door opening by fixing the decorative member to the indoor side end of the frame member. Also with this configuration, for example, a decorative member such as a wooden picture frame can be easily disposed on the indoor side of the door opening. Moreover, it can suppress that a decorative member protrudes in the door opening part side by fixing a decorative member to the indoor side edge part of a frame member, and can fully ensure the effective opening dimension of a door opening part.

  In the door frame refurbishment structure according to the present invention, the connecting metal fitting may be configured to have a cross-sectional crank shape in which the frame fixing portion is arranged offset from the frame fixing portion inward of the door opening. Then, the new door frame can be connected to the housing with high strength, and the frame fixing portion is offset from the housing fixing portion to the outside of the door opening so that the new door frame can be connected as much as possible. It can arrange | position outside and can ensure the opening dimension of a door opening part still larger.

  In the door frame refurbishment structure according to the present invention, the new door frame is a connection structure in which an outdoor side portion arranged on the outdoor side and an indoor side portion arranged on the indoor side are connected by a resin material, The frame fixing part of the connection fitting may be configured to be fixed to both the outdoor side part and the indoor side part. Then, the new door frame having a connection structure sandwiching a resin material such as a heat insulating material can be securely held by the connection fitting, and for example, the outdoor portion of the vertical frame that receives the load of the new door can be firmly supported. .

  According to the present invention, it is possible to prevent the new door frame from protruding into the door opening by using the connecting metal fitting, and to install the new door frame inside the existing door frame in a state where the effective opening dimension of the door opening is sufficiently secured. Can be attached.

FIG. 1 is a view of a refurbished door to which a door frame refurbishing structure according to a first embodiment of the present invention is applied, and FIG. 1 (A) is a front view of the refurbished door viewed from the outdoor side. 1 (B) is a rear view of the modified door as viewed from the indoor side. FIG. 2 is a longitudinal sectional view of the modified door shown in FIG. FIG. 3 is a cross-sectional view of the modified door shown in FIG. FIG. 4 is an enlarged cross-sectional view of the periphery of one vertical frame of the modified door shown in FIG. FIG. 5 is an enlarged vertical sectional view of the periphery of the upper frame of the modified door to which the door frame modified structure according to the second embodiment of the present invention is applied. FIG. 6 is an enlarged cross-sectional view of the periphery of one vertical frame of the modified door shown in FIG.

  Hereinafter, a door frame refurbishment structure according to the present invention will be described in detail with reference to the accompanying drawings by giving a preferred embodiment by exemplifying a refurbishment door having this structure.

  FIG. 1 is a view of a refurbished door 12 to which a door frame refurbishing structure 10 according to the first embodiment of the present invention is applied. FIG. 1A is a front view of the refurbished door 12 as seen from the outdoor side. FIG. 1B is a rear view of the refurbished door 12 as viewed from the indoor side. 2 is a longitudinal sectional view of the modified door 12 shown in FIG. 1, and FIG. 3 is a transverse sectional view of the modified door 12 shown in FIG.

  As shown in FIG. 1 to FIG. 3, the refurbished door 12 is an existing door that has been removed by leaving an existing door previously installed in the opening 14 a of the building housing 14, leaving a door frame (existing door frame 16). This is a fitting that attaches a new door frame (new door frame 18) to the inside of the door frame 16 and supports the new door 20 so that it can be opened and closed. The renovated door 12 is installed by, for example, renovation work of a front door of a house. In the present embodiment, a single door is illustrated, but a double door or the like may be used.

  The existing door frame 16 has a rectangular opening formed by four-frames an upper frame 16a, a lower frame 16b, and left and right vertical frames 16c and 16d. The upper frame 16a, the lower frame 16b, and the vertical frames 16c and 16d are extruded shapes made of a metal material such as aluminum. The upper frame 16a, the lower frame 16b, and the vertical frames 16c and 16d are fixed to the housing 14 before the new door frame 18 is attached. As shown in FIGS. 1 and 2, a part of the lower frame 16 b is fixed so as to be embedded in the soil 22.

  The new door frame 18 has a rectangular opening (door opening 19) formed by four-frames an upper frame 18a, a lower frame 18b, and left and right vertical frames 18c and 18d. The upper frame 18a, the lower frame 18b, and the vertical frames 18c and 18d are made of an extruded shape made of a metal material such as aluminum.

  As shown in FIG. 2, the upper frame 18a connects the outdoor side part 24a arranged on the outdoor side and the indoor side part 24b arranged on the indoor side with a heat insulating material 26 of a resin material provided in a pair. It is the connection structure formed in the substantially rectangular shape. The indoor side portion 24b is provided with a door stop 28 protruding downward from the prospective surface. The upper frame 18 a is connected and fixed to the housing 14 through the crank-shaped connecting metal 30 at the indoor side portion 24 b.

  An outer frame 32 that covers the upper frame 16a of the existing door frame 16 from the outdoor side is fixed to the outdoor side finding surface of the outdoor side part 24a of the upper frame 18a. The outer frame 32 is a decorative member formed of an extruded shape of a metal material such as aluminum, and is for enhancing the appearance of the outdoor side of the modified door 12. One end of the outer frame 32 is fixed to the housing 14 side, but the length can be adjusted at the construction site via the folding groove 32a.

  The lower frame 18b is disposed so as to overlap the lower frame 16b of the existing door frame 16, and is connected and fixed to the soil 22 together with the lower frame 16b by an attachment screw 34. The lower frame 18b has a staircase shape, and includes a door stop portion 35 and a baseboard portion 36 provided at an indoor side end portion. The baseboard portion 36 covers the rising surface of the indoor / outdoor step of the soil 22 together with the baseboard member 38 connected to the lower side thereof.

  As shown in FIG. 3, one vertical frame 18c connects an outdoor side portion 40a arranged on the outdoor side and an indoor side portion 40b arranged on the indoor side with a heat insulating material 26 of a resin material provided as a pair. The connection structure is formed in a substantially rectangular cross section. The indoor side portion 40b is provided with a door stop portion 42 that protrudes inward from the prospective surface. The vertical frame 18c is connected and fixed to the housing 14 via the crank-shaped connecting metal fittings 44c with respect to the outdoor side portion 40a and the indoor side portion 40b.

  An outer frame 46 that covers the vertical frame 16c of the existing door frame 16 from the outdoor side is fixed to the outdoor side finding surface of the outdoor side portion 40a of the vertical frame 18c. The outer frame 46 is a decorative member formed of an extruded shape of a metal material such as aluminum, and is for enhancing the appearance of the outdoor side of the refurbished door 12. One end of the outer frame 46 is fixed to the housing 14 side, but the length can be adjusted at the construction site via the break-off groove 46a.

  The other vertical frame 18d is substantially symmetrical with the one vertical frame 18c and has the same basic structure. That is, the vertical frame 18d has an outdoor portion 40a and an indoor portion 40b connected by the heat insulating material 26, and a door stop portion 42 is provided on the prospective surface of the indoor portion 40b. In addition, for the vertical frame 18d, the outdoor side prospective surface 40c of the outdoor side part 40a and the indoor side part 40b is connected and fixed to the housing 14 via the crank-shaped connecting metal 44. Further, an outer frame 46 that covers the vertical frame 16d of the existing door frame 16 from the outdoor side is fixed to the outdoor side finding surface of the outdoor side portion 40a of the vertical frame 18c.

  The new door 20 is open in the case of this embodiment, and is supported so that it can be opened and closed inside the new door frame 18 via a hinge 48 attached to the outdoor portion 40a of the vertical frame 18c of the new door frame 18. . The new door 20 is installed so as to open and close on the outdoor side of the door contact portions 28, 35, and 42 provided in the frames 18 a to 18 d of the new door frame 18.

  The new door frame 18 that supports the new door 20 is attached to the housing 14 via the door frame refurbishment structure 10 using the connecting metal members 30 and 44.

  Then, next, the specific structure of the door frame renovation structure 10 which concerns on this embodiment is demonstrated.

  As shown in FIGS. 2 and 3, in the modified door 12 according to this embodiment, the door frame modified structure 10 is used to attach the upper frame 18 a and the vertical frames 18 c and 18 d of the new door frame 18. The door frame refurbishment structure 10 in the vertical frame 18c whose enlarged view is shown in FIG. 4 will be described as a representative. Only detailed description will be given, and detailed description of similar structures will be omitted.

  As shown in FIG. 2 and FIG. 3, the new door frame 18 is installed inside the existing door frame 16 that has been installed on the outdoor side of the building frame 14 of the building. 14, the upper frame 18a and the vertical frames 18c, 18d are connected and fixed via connecting fittings 30, 44.

  As shown in FIGS. 3 and 4, the connecting bracket 44 used for the vertical frame 18 c is formed in a crank shape that is bent so as to avoid the door contact portion 16 e of the existing door frame 16. The connecting metal fitting 44 is formed by bending a metal plate such as stainless steel or steel, is formed to be shorter than the longitudinal dimension of the vertical frame 18c, and is attached to, for example, a plurality of locations in the longitudinal direction of the vertical frame 18c.

  The connecting metal fitting 44 includes a frame fixing portion 44a that is fixed to the new door frame 18 as one crank-shaped prospective portion, and a housing fixing portion 44b that is fixed to the housing 14 as the other prospective portion. Have.

  The frame fixing portion 44a is fixed by using a fixing screw 50 from the vertical frame 16c side of the existing door frame 16 to the outdoor side expected surface 40c of the vertical frame 18c of the new door frame 18 (expected surface on the existing door frame 16 side). Is done. Specifically, the frame fixing portion 44a extends from the outdoor-side expected surface 40c of the indoor-side portion 40b of the vertical frame 18c beyond the heat insulating material 26 to the outdoor-side expected surface 40c of the outdoor-side portion 40a. The outdoor exterior prospective surfaces 40c of 40a and 40b are fixed by fixing screws 50, respectively. As a result, the vertical frame 18c having a connection structure sandwiching the heat insulating material 26 can be reliably held by the connection fitting 44, and in particular, the outdoor portion 40a receiving the load of the new door 20 can be firmly supported by the hinge 48. . At this time, the gap between the frame fixing portion 44 a and the vertical frame 16 c of the existing door frame 16 is sealed by the spacer 51 and the sealing material 52.

  Unlike the frame fixing portion 44a provided on the outer periphery of the new door frame 18, the frame fixing portion 44b is offset inward of the door opening 19 from the frame fixing portion 44a on the indoor side of the new door frame 18. Be placed. The housing fixing part 44b is fixed by using a fixing screw 54 with a spacer 53 interposed between the door opening 19 side opposite to the frame fixing part 44a and the prospective surface of the opening 14a of the housing 14. That is, the fastening direction of the housing fixing part 44b to the housing 14 and the fastening direction of the frame fixing part 44a to the vertical frame 18c are set in opposite directions.

  Such a coupling metal 44 is located on the indoor side of the indoor side portion 40b of the vertical frame 18c so that the portion in the direction of finding between the frame fixing portion 44a and the frame fixing portion 44b avoids the door stop portion 16e of the existing door frame 16. Arranged along the finding surface. At this time, the connecting bracket 44 has sufficient strength due to the crank shape described above, and the frame fixing portion 44a side is offset from the housing fixing portion 44b to the outside of the door opening portion 19, so that the vertical frame 18c can be arranged as far as possible, and the opening size of the door opening 19 can be ensured to the maximum extent.

  Further, in the door frame refurbishment structure 10, a frame member 56 is provided on the indoor side of the vertical frame 18 c of the new door frame 18 so as to cover the housing fixing portion 44 b of the connection fitting 44 from the door opening 19 side.

  The frame member 56 is an extruded member made of a metal material such as aluminum having a substantially L-shaped cross section, for example, and is fixed to the housing 14 with a fixing screw 58 with a spacer 57 interposed therebetween. The frame member 56 has a surface parallel to the housing fixing portion 44b of the connection fitting 44, and covers the housing fixing portion 44b and the fixing screw 54, thereby enhancing the appearance of the interior of the modified door 12 on the indoor side. Therefore, the fixing screw 58 is also provided to the attachment portion 56a that is shifted by one step from the prospective surface of the frame member 56 so that the appearance of the fixing screw 58 is not conspicuous, and the opening is covered with the cap 56b. Each piece of the frame member 56 is provided with a folding groove 56c so that the length can be adjusted at the construction site.

  An angle fitting 59 is connected and fixed to the indoor-side finding surface 56 d of the frame member 56. The angle metal fitting 59 is an extruded shape member made of a metal material such as aluminum formed in a substantially L-shaped cross section, for example. A wooden picture frame (decorative member) 60 is connected and fixed to a prospective surface on the back side (the housing 14 side) of the angle bracket 59 using a wood screw 62. The wooden picture frame 60 is a wooden picture frame member, and is for enhancing the appearance of the interior side of the refurbished door 12.

  As shown in FIG. 4, the prospective surfaces of the frame member 56, the angle bracket 59, and the wooden frame 60 are substantially flush, ensuring the appearance of the door opening 19 and ensuring the maximum opening dimension. Is done. Moreover, as shown in FIGS. 2-4, the lower part of the prospective surface of these frame members 56, the angle metal fitting 59, and the wooden frame 60 is integrally covered with the baseboard-like cover member 64. As shown in FIG.

  The door frame refurbishment structure 10 is basically the same in the case of the other vertical frame 18d except that it has a bilaterally symmetric structure as in the case of the vertical frame 18c described above. Reference numerals are assigned and detailed description is omitted.

  Further, the door frame refurbishment structure 10 has substantially the same configuration in the case of the upper frame 18a as in the case of the vertical frame 18c, and therefore, the same or similar elements are denoted by the same reference numerals and detailed description thereof is omitted. To do. However, since the upper frame 18a hardly receives the load of the new door 20, the connecting metal fitting 30 constituting the door frame refurbishment structure 10 has a frame fixing portion 44a whose outer-side expected surface 40c of the indoor side portion 24b of the upper frame 18a. It is fixed only with respect to the fixing screw 50. Of course, the frame fixing portion 44a of the connecting fitting 30 may be extended and fixed to the outdoor portion 24a. Further, the cover member 64 is not provided on the prospective surfaces of the frame member 56, the angle bracket 59, and the wooden frame 60 provided on the upper frame 18a.

  FIG. 5 is an enlarged longitudinal sectional view of the periphery of the upper frame 18a of the modified door 12 to which the door frame modified structure 10A according to the second embodiment of the present invention is applied, and FIG. 6 is a modified door 12 shown in FIG. It is the cross-sectional view which expanded the one vertical frame 18c periphery. Also in the modified door 12 to which the door frame modified structure 10A according to the present embodiment is applied, the structure of the lower frame 18b and its peripheral part is the same as the structure shown in FIG. Only the structure of the part is shown. Further, even in the case of the present embodiment, the structure of one vertical frame 18c and its peripheral part and the structure of the other vertical frame 18d and its peripheral part are symmetrical structures, except for the presence or absence of the hinge 48. Since the basic structure is the same, only the structure of one vertical frame 18c and its peripheral part is shown in FIG.

  The door frame refurbishment structure 10A according to the present embodiment shown in FIGS. 5 and 6 has the same or similar functions and effects as the door frame refurbishment structure 10 according to the first embodiment shown in FIGS. Elements are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 5 and 6, the door frame refurbishment structure 10A according to the present embodiment has a structure in which the upper frame 18a and the vertical frames 18c and 18d are connected to the housing 14 by the connection fittings 30 and 44 as shown in FIGS. 4 is the same as the connection structure of the door frame refurbishment structure 10 shown in FIG. 4 except that a frame member 70 is provided instead of the frame member 56 and the angle bracket 59.

  As shown in FIG. 5, the door frame refurbishment structure 10 </ b> A includes a frame member 70 that covers the housing fixing portion 44 b of the coupling metal 30 that fixes the upper frame 18 a to the housing 14 from the door opening 19 side. The wooden frame 60 is connected and fixed to 70.

  The frame member 70 is, for example, an extruded shape made of a metal material such as aluminum having a substantially L-shaped cross section, and is fixed to the indoor side finding surface of the indoor side portion 24b of the upper frame 18a by using a fixing screw 72. Is done. The frame member 70 is intended to enhance the appearance of the interior of the refurbished door 12 by covering the housing fixing portion 44b of the connection fitting 30 and the fixing screw 54 thereof. Further, the wood frame 60 is connected and fixed to a prospective surface on the back surface side (the housing 14 side) of the indoor side end portion of the frame member 70 using a wood screw 62.

  Further, as shown in FIG. 6, the door frame refurbishment structure 10 </ b> A includes a frame member 70 that covers the housing fixing portion 44 b of the connecting metal fitting 44 that fixes the vertical frame 18 c (18 d) to the housing 14 from the door opening 19 side. The wooden frame 60 is connected and fixed to the frame member 70. Also in this case, the wood frame 60 is connected and fixed to the prospective surface on the back surface side (the housing 14 side) of the indoor side end portion of the frame member 70 using the wood screw 62.

  In such a door frame refurbishment structure 10A, the angle bracket 59 is not required as compared with the door frame refurbishment structure 10, so that the number of parts can be reduced and the cost can be reduced.

  As described above, the door frame refurbishment structure 10, 10 </ b> A according to the present embodiment is a structure in which the new door frame 18 is attached to the inside of the existing door frame 16 that is left after the existing door is removed. Are connected to the housing 14 of the building on the indoor side of the installation position, and the connection fittings 30, 44 are screwed and fixed to the prospective surface of the opening 14a of the housing 14. And a frame fixing portion 44a fixed to the new door frame 18 by screwing in a direction opposite to the case fixing portion 44b. More specifically, the housing fixing portion 44b is screwed and fixed to the housing 14 from the door opening 19 side, and the frame fixing portion 44a is connected to the housing fixing portion 44b with respect to the outdoor exterior prospective surface 40c of the new door frame 18. Is fixed with screws from the side of the existing door frame 16 in the opposite direction.

  Thus, in the door frame refurbishment structures 10 and 10A, the fastening direction of the frame fixing portion 44a of the coupling fittings 30 and 44 to the new door frame 18 is configured to be opposite to the fastening direction of the housing fixing portion 44b to the housing 14. Therefore, the new door frame 18 protrudes into the door opening 19 of the refurbished door 12 even when the new door frame 18 is connected to the housing 14 of the building on the indoor side of the installation position. The new door frame 18 can be attached to the inside of the existing door frame 16 in a state in which the effective opening size of the door opening 19 is sufficiently secured. Note that the fastening direction is the reverse direction in addition to the state in which the fastening direction of the fastening screw 54 for fastening the housing fixing portion 44b and the fastening screw 50 for fastening the frame fixing portion 44a are opposite to each other by 180 degrees. The fastening direction by both fixing screws 50 and 54 includes a state in which the fastening direction is slightly inclined from the opposite direction by 180 degrees. In short, it is sufficient if the fixing strength by both fixing screws 50 and 54 can be sufficiently secured.

  At this time, the connection fittings 30 and 44 have a crank shape with a cross section in which the housing fixing portion 44b is offset from the frame fixing portion 44a to the inside of the door opening 19. That is, since the frame fixing portion 44a of the connecting metal fittings 30 and 44 supports the new door frame 18 at a position retracted outward from the door opening 19 side, the new door frame 18 further protrudes into the door opening 19. Therefore, the effective opening size of the door opening 19 can be further increased.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  In the above embodiment, the door frame refurbishment structures 10 and 10A are exemplified for the upper frame 18a and the vertical frames 18c and 18d, but the door frame refurbishment structures 10 and 10A may be used for the lower frame 18b.

  10, 10A door frame refurbishment structure, 12 refurbished door, 14 housing, 14a opening, 16 existing door frame, 16a, 18a upper frame, 16b, 18b lower frame, 16c, 16d, 18c, 18d vertical frame, 18 new door frame , 19 Door opening, 20 New door, 24a, 40a Outdoor part, 24b, 40b Indoor part, 26 Insulating material, 30, 44 Connecting bracket, 32, 46 Outer frame, 38 Skirting member, 40c , 44a Frame fixing part, 44b Frame fixing part, 50, 54, 58, 72 fixing screw, 56, 70 frame member, 56d indoor side finding surface, 59 angle bracket, 60 wooden frame

Claims (9)

A door frame renovation structure in which a new door frame is attached to the inside of an existing door frame that has been removed by removing an existing door,
A connecting bracket interposed between the new door frame and the building frame located on the indoor side of the new door frame,
The connecting bracket has a housing fixing part to be attached to a prospective surface of the opening of the building housing, and a frame side fixing part to be attached to the new door frame,
The connecting bracket is disposed at a position where the housing fixing part is offset inward of the door opening part from the frame side fixing part ,
The frame fixing portion is located closer to the inside of the new door frame than the center of the width dimension with respect to the width dimension in the direction of finding the vertical frame of the new door frame, and the new door frame door frame refurbished structure than estimated plane facing the door opening, characterized that you have been placed at a position closer to the outside of the newly door frame. The door frame refurbishment structure according to claim 1,
The existing door frame has a door stop portion protruding inward from a prospective surface of the existing door frame,
The new door frame is arranged at a position where a part is closer to the prospective surface side of the existing door frame than the tip of the door stop portion,
The connecting metal fitting is disposed at a position where the frame-side fixing portion is closer to the prospective surface side of the existing door frame than the tip of the door stop portion, and the housing fixing portion is more than the tip of the door stop portion. A door frame refurbishment structure, wherein the door frame is arranged at a position opposite to the prospective surface side of the door frame. In the door frame refurbishment structure according to claim 1 or 2,
The connecting metal fitting has a crank shape in which the housing fixing part and the frame side fixing part are connected to each other in a direction in which the connection fitting is arranged along a direction in which the new door frame is found. Construction. In the door frame refurbishment structure according to claim 1 or 2,
The new door frame is a connection structure in which an outdoor side portion arranged on the outdoor side and an indoor side portion arranged on the indoor side are connected by a heat insulating material,
The door frame refurbishment structure characterized in that the frame side fixing portion of the connection fitting is attached to at least the indoor side portion. In the door frame refurbishment structure of any one of Claims 1-4 ,
The frame member is disposed on the indoor side of the new door frame, and covers a frame fixing portion of the connection fitting,
One end of the frame member is attached to the building frame, and the other end abuts against a finding surface of a new door frame. In the door frame refurbishment structure according to claim 2,
A door frame refurbishment structure characterized in that a spacer is interposed between a position of the prospective surface of the existing door frame on the indoor side with respect to the door contact portion and a housing fixing portion of the coupling fitting. The door frame refurbishment structure according to claim 6 ,
The housing fixing part of the connection fitting is screwed and fixed to the building housing using a screw,
The door frame retrofit structure, wherein the screw penetrates the spacer and the existing door frame and is fixed to the building frame. In door frame refurbished structure according to any one of claims 1 to 7
The new door frame has a door stop portion protruding inward of the door opening from a prospective surface facing the door opening,
Frame-side fixing portion of the connecting fitting, said at a position where the chamber outside side from door stop portion of the new door frame, door frame refurbished structure, characterized in that attached to the new door frame. A refurbished door characterized in that the new door is supported by the new door frame attached by the door frame refurbishment structure according to any one of claims 1 to 8 .