Renovation fitting

Abstract

To regulate the attitude of a newly installed sill without complicating repair work.SOLUTION: A repair fitting includes a new lower frame 12 of a new frame body 10 on an inner peripheral side of an existing lower frame 1b attached to a skeleton B, wherein the new lower frame 12 has a new inward aspect wall portion 1b facing an inner peripheral side aspect surface of the existing lower frame 12e at a portion located on an indoor side, a frame support member 30 supporting a portion of the new lower frame 12 located on an outdoor side is attached to the existing lower frame 1b, and the portion of the new lower frame 12 located on the outdoor side is supported by the frame support member 30 via an attachment 20.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a renovation fitting that has a new lower frame of a new frame body on the inner periphery of an existing lower frame attached to a main body. [Background technology]

[0002] One method of renovating building materials is to leave the existing lower frame on the main body and attach a new lower frame to the inner periphery of the existing lower frame (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-196667 Summary of the Invention [Problem to be solved by the invention]

[0004] In this type of renovation, it is common to install a new sill that is larger in dimension along the projected direction than the existing sill to prevent the existing sill from being exposed to the outside. Here, the interior-facing portion of the new sill can be positioned by abutting it against the existing sill. In contrast, the exterior-facing portion of the new sill protrudes further outward than the existing sill, making it difficult to position it using the existing sill. For this reason, a spacer is traditionally placed on the top surface of the entrance porch, and the exterior-facing portion of the new sill is abutted against the spacer's top surface to determine the orientation of the new sill. However, the height of the entrance porch varies depending on the fixture being renovated, and the height of the spacer must be adjusted each time at the renovation site, complicating the renovation process.

[0005] In view of the above-mentioned circumstances, the present invention aims to provide a renovation fitting that can regulate the posture of a newly installed sill without complicating the renovation work. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the renovation fitting of the present invention is a renovation fitting that comprises a new lower frame of a new frame body on the inner side of an existing lower frame attached to a main body, and is characterized in that the new lower frame has an opposing wall portion that faces the inner side visible surface of the existing lower frame in the portion located on the inside of the room, and a frame support member is attached to the existing lower frame that supports the portion of the new lower frame located on the outside of the room. [Effects of the Invention]

[0007] According to the present invention, since the frame support members are attached to the existing sill, the posture of the new sill can be accurately determined based on the position of the existing sill, regardless of the height of the entrance porch. This eliminates the need for adjustment work at the renovation site, making the work easier. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a view of the fitting for renovation according to the first embodiment of the present invention, as seen from the outside of the room. [Figure 2] FIG. 2 is a vertical cross-sectional view of the renovation fitting shown in FIG. 1. [Figure 3] FIG. 2 is a cross-sectional view of the renovation fitting shown in FIG. 1. [Figure 4] FIG. 2 is an enlarged longitudinal cross-sectional view of the lower frame portion of the fitting for renovation shown in FIG. 1. [Figure 5] FIG. 2 is an exploded vertical cross-sectional view showing an enlarged view of the lower frame portion of the fitting for renovation shown in FIG. 1. [Figure 6] 2 shows a frame support member to be applied to the renovation fitting shown in FIG. 1, where (a) is an end view and (b) is an end view after being broken along the guide groove. [Figure 7] FIG. 10 is a vertical cross-sectional view showing the lower frame portion of a fitting for renovation according to a second embodiment of the present invention. [Figure 8] FIG. 10 is a vertical cross-sectional view showing the lower frame portion of a fitting for renovation according to a third embodiment of the present invention. [Figure 9]FIG. 10 is a vertical cross-sectional view showing the lower frame portion of a fitting for renovation according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] A preferred embodiment of the renovation fittings according to the present invention will be described in detail below with reference to the accompanying drawings. Note that, for convenience, the terms "prospect direction" and "visibility direction" will be used below. The prospect direction is the direction along the depth of the fittings, as indicated by arrow A in the drawings. A surface along the prospect direction will sometimes be referred to as a "prospect face." The prospect direction is the direction perpendicular to the prospect direction for items that extend horizontally, such as sill frames. For items that extend vertically, such as vertical frames, the horizontal direction perpendicular to the prospect direction is called the "prospect direction." A surface along the prospect direction will sometimes be called a "prospect face."

[0010] (Embodiment 1) 1 to 3 show a fitting for renovation according to a first embodiment of the present invention. The fitting for renovation exemplified here is a door used at the entrance of a building such as a detached house, and in particular, an entrance door for renovation that is installed with the existing frame body 1 remaining on the skeleton B is exemplified. That is, in this entrance door, new upper frame 11, lower frame 12, and left and right vertical frames 13 for renovation are installed on the inner periphery of the existing upper frame 1a, lower frame 1b, and left and right vertical frames 1c that are attached to the skeleton B, thereby forming a frame body 10 for supporting a door panel 14 so that it can be opened and closed. The new upper frame 11 and left and right vertical frames 13 each have metal frame portions 11A, 13A on the outdoor side that are molded from a metal such as an aluminum alloy, and resin frame portions 11B, 13B on the indoor side that are molded from a resin, and are formed by connecting the metal frame portions 11A, 13A and the resin frame portions 11B, 13B to each other. The metal frame sections 11A, 13A and the resin frame sections 11B, 13B are each extruded and configured to have a substantially uniform cross-sectional shape along their entire length. The upper frame section 11 and the vertical frame section 13 are attached to the main body B via fixing brackets 11C, 13C, respectively. The new lower frame section 12 has an interior frame section 12A and an exterior frame section 12B formed from a metal such as an aluminum alloy, and a bridge section 12C formed from an insulating material. The interior frame section 12A and the exterior frame section 12B are connected via the bridge section 12C. The door panel 14, not shown in the figure, is a so-called flush panel, constructed by arranging surface materials 14b, 14c on a framework 14a that is framed all around. In particular, in the first embodiment, a door panel 14 is applied in which a heat insulating material layer 14d and an air layer 14e are configured between surface materials 14b and 14c (see FIG. 4).

[0011] Figures 4 and 5 show the sill portion of the renovation fittings. Below, with reference to Figures 4 and 5, the detailed configuration of the new sill 12 and the mounting structure of the sill 12 will be mainly described in detail, and the characteristic parts of the present invention will also be explained. Note that, for convenience, the components of the existing frame body 1 attached to the skeleton B will be referred to as "existing," such as "existing sill," and the components of the newly installed frame body 10 will be referred to as "new sill," such as "new sill," to distinguish between the two.

[0012] The existing lower frame 1b includes a flat, existing frame body 1ba extending almost horizontally along the projection direction; an existing outer support wall 1bb extending from the exterior edge of the existing frame body 1ba toward the outer periphery; an existing inner support wall 1bc extending from the interior edge of the existing frame body 1ba toward the outer periphery; and an existing doorstop wall 1bd extending from the interior edge of the existing frame body 1ba toward the inner periphery in the projection direction. The portion of the existing doorstop wall 1bd facing the exterior is provided with an existing sealing material attachment portion 1be that protrudes toward the exterior. The portion of the existing doorstop wall 1bd facing the interior is provided with an existing inner projection wall 1bf extending almost horizontally from the inner edge toward the interior, and an existing inner projection wall 1bg extending in the projection direction at the interior edge of the existing inner projection wall 1bf.

[0013] The new sill 12, which is the target of repairing the existing sill 1b, is composed of a new frame body 12a, a new exterior sight wall 12b, a new doorstop wall 12c, a new interior sight wall 12d, and a new interior sight wall (opposing wall) 12e. The new frame body 12a is flat and extends in the sight direction. As described above, the new sill 12 has an indoor frame portion 12A, an outdoor frame portion 12B, and a bridge member 12C. In the illustrated example, the bridge member 12C is provided in the new frame body 12a at a position corresponding to the insulation layer 14d and air layer 14e of the door panel 14, and the new frame body 12a is composed of the body component 12A1 of the indoor frame portion 12A and the body component 12B1 of the outdoor frame portion 12B. The inner peripheral surface of the new frame body 12a is configured to be nearly flat horizontally. The bridge member 12C is located between the bridge mounting portion 12A2 on the main body component 12A1 of the indoor frame portion 12A and the bridge mounting portion 12B2 on the main body component 12B1 of the outdoor frame portion 12B. The bridge mounting portions 12A2 and 12B2 protrude outward from the main body components 12A1 and 12B1, respectively, and open at opposing locations. Screw holes 12f are located on the outer peripheral portion of the new frame body 12a, near the outdoor side and on both sides of the bridge member 12C. The protruding dimension of the screw holes 12f toward the outer peripheral side is smaller than the protruding dimension of the bridge mounting portions 12A2 and 12B2. The new exterior visible wall portion 12b extends from the outdoor edge of the new frame body 12a toward the outer peripheral side. The protruding dimension of the new exterior sight wall 12b toward the outer periphery is set larger than that of the bridge mounting portions 12A2, 12B2. A cover mounting portion 12g is provided along the length of the inner periphery edge of the new exterior sight wall 12b facing the outside of the room. Three rib-like protrusions 12h are provided at approximately equal intervals along the length of the new exterior sight wall 12b facing the inside of the room. The rib-like protrusion 12h on the innermost periphery extends almost horizontally at a position where the surface facing the outer periphery is on the outer periphery side of the bridge mounting portions 12A2, 12B2. The new doorstop wall 12c extends in the sight direction from the edge located on the interior side of the new frame body 12a toward the inner periphery.A sealant attachment portion 12i for attaching a sealant C is provided on the inner peripheral edge of the new doorstop wall portion 12c, facing the outside. The new inner recessed wall portion 12d extends from the new doorstop wall portion 12c toward the interior of the room. Screw holes 12j are provided on the outer peripheral surface of the new inner recessed wall portion 12d. The new inner sight wall portion 12e extends in the sight direction at the edge of the new inner recessed wall portion 12d located on the interior side of the room. The inner extension dimension of the new inner sight wall portion 12e is slightly larger than that of the new doorstop wall portion 12c. The outer extension dimension of the new inner sight wall portion 12e is set to approximately match the outer peripheral surface of the rib-shaped protrusion 12h provided on the innermost part of the new outer sight wall portion 12b.

[0014] As is clear from the figure, the dimension of the new sill 12 along the projection direction from the new inner sight wall 12e to the new outer sight wall 12b is more than twice the dimension of the existing sill 1b along the projection direction from the existing sealant attachment portion 1be to the existing outer support wall 1bb. Therefore, if the outer peripheral edge of the new inner sight wall 12e were simply placed against the inner peripheral surface of the existing frame body 1ba, the new sill 12 would protrude farther outside the room than the existing frame body 1ba, making it difficult to support this outer portion and thus difficult to determine the orientation of the new sill 12. For this reason, in this first embodiment, when installing the new sill 12 on the inner peripheral side of the existing sill 1b, attachments 20 are attached to the new sill 12 in advance, and frame support members 30 are attached to the existing sill 1b.

[0015] The attachment 20 is attached to the screw holes 12f located on the outermost side of the new frame body 12a to form a support surface on the outer side of the new sill 12, and is made of a metal such as an aluminum alloy. In this embodiment 1, an attachment 20 is illustrated that has a flat attachment body 21, an engaging portion 22 that protrudes inward from the outer edge of the attachment body 21, bends toward the outside, and bends again toward the inner side, and a mating protrusion 23 that protrudes inward from the inner side of the attachment body 21. The attachment 20 is attached to the outer side of the outer periphery of the new sill 12 by fitting the engaging protrusion 23 into the screw holes 12f and engaging the engaging portion 22 with the rib-like protrusion 12h located on the innermost side. When the attachment 20 is attached to the new lower frame 12, the surface 21a on the outer periphery of the attachment body 21 and the edge surface on the outer periphery of the new inner sight wall portion 12e are positioned on the same horizontal plane.

[0016] The frame support member 30 is formed from a metal such as an aluminum alloy, and as shown in FIG. 6, has a sight piece 31 extending in the sight direction and a sight piece 32 extending in the sight direction from a joint edge 31a on the inner periphery of the sight piece 31. The sight piece 31 and the sight piece 32 each have a plurality of break-off guide grooves 33 on their inner surfaces. The break-off guide grooves 33 extend along the joint edge 31a, and can be folded to break the sight piece 31 and the sight piece 32. In the example shown in FIGS. 4 and 5, the sight piece 31 is appropriately broken off so that it is smaller in size than the existing outer support wall portion 1bb of the existing bottom frame 1b. The length of the projection piece 32 is set so that when the projection piece 31 is abutted against the exterior-facing surface of the existing outer support wall 1bb, the outdoor edge of the projection piece 32 faces the outer surface 21a of the attachment body 21, located indoors relative to the screw hole 12f located at the outermost position of the new frame body 12a. An insulating member 40 is disposed on the inner surface of the projection piece 32. The insulating member 40 is formed into a sheet of insulating material and is sized to cover the entire surface of the projection piece 32. The frame support member 30 is attached to the existing lower frame 1b by screwing a screw S1 into the existing outer support wall 1bb via the projection piece 31, with the surface of the insulating member 40 coinciding with the inner surface of the existing frame body 1ba of the existing lower frame 1b. The frame support member 30 may be provided along the entire length of the existing lower frame 1b, or may be provided at multiple positions along the length of the existing lower frame 1b.

[0017] For the existing sill 1b to which the frame support members 30 have been attached as described above, the new sill 12 with the attachment 20 attached is placed on the inner periphery, and screws S2 are threaded into the existing frame body 1ba via the new inner recessed wall 12d. Screws S3 are also threaded into the frame support members 30, spacer D, and entrance porch E via the attachment 20 and insulating member 40. This allows the new sill 12 to be attached to the inner periphery of the existing sill 1b while maintaining a defined posture. That is, the position of the interior side of the new sill 12 is determined by the outer peripheral edge of the new inner recessed wall 12e abutting against the inner peripheral surface of the existing frame body 1ba. Meanwhile, the exterior side of the new sill 12 is determined by the attachment 20 and insulating member 40 abutting against the recessed piece 32 of the frame support member 30. As a result, the posture of the new sill 12 can be accurately determined based on the position of the existing sill 1b. This eliminates the need for adjustments such as adjusting the height of the spacer D at the renovation site, simplifying the work. Furthermore, because the new sill 12 is fitted with a heat-insulating member 40 made of insulating material between the metal frame support member 30, the frame support member 30 does not form a thermal bridge between the interior frame portion 12A and the exterior frame portion 12B of the new sill 12, eliminating concerns about impairing the insulation of the new sill 12. A new door can be constructed on the inner periphery of the existing sill 1 by supporting a door panel 14 openably and closably on the new sill 10. A spacer F made of insulating material is interposed between the existing sealant attachment portion 1be of the existing sill 1b and the new interior facing wall portion 12e of the new sill 12. After the screw S2 is screwed in, a door sill G is attached between the new door stop wall 12c and the new inner sight wall 12e. A step-absorbing member H is provided at the step between the new lower frame 12 and the existing lower frame 1b. After the screw S3 is screwed in, a cover member J is attached to the inner peripheral surface of the new frame body 12a. An outer frame M is provided between the exterior wall K and the new frame body 10 to cover the existing frame body 1.

[0018] (Embodiment 2) 7 shows the main parts of a fitting for renovation according to the second embodiment of the present invention. The fitting for renovation illustrated here is a door used at the entrance of a building such as a detached house, similar to the fitting for renovation according to the first embodiment, but differs from the fitting for renovation according to the first embodiment in the configuration of the heat insulating member.

[0019] That is, the insulating member 140 of the second embodiment is formed into a block shape using insulating material and is interposed between the existing outer support wall portion 1bb of the existing lower frame 1b and the visible piece 31 of the frame support member 30. More specifically, the inner peripheral portion of the insulating member 140 is disposed so as to abut or face closely to the bridge mounting portions 12A2, 12B2 of both the indoor frame portion 12A and the outdoor frame portion 12B of the new lower frame 12. The frame support member 30 is configured shorter than in the first embodiment by the length of the insulating member 140, by breaking the visible piece 32 via the break-off guide groove 33. The frame support member 30 is attached to the existing lower frame 1b with its inner peripheral surface coinciding with the visible surface of the existing frame body 1ba. Other components similar to those in the first embodiment are designated by the same reference numerals.

[0020] In the second embodiment described above, the position of the interior side of the new sill 12 is determined by the outer peripheral edge of the new inner sight wall 12e abutting against the inner peripheral surface of the existing frame body 1ba. The exterior side of the new sill 12 is determined by abutting against the projection piece 32 of the frame support member 30 via the attachment 20. This allows the posture of the new sill 12 to be accurately determined based on the position of the existing sill 1b. This eliminates the need for adjustment work at the renovation site, simplifying the work. Furthermore, the insulating member 140 is positioned against or facing the interior frame portion 12A and the exterior frame portion 12B of the new sill 12, preventing the frame support member 30 from forming a thermal bridge and eliminating concerns about impairing the insulating properties of the new sill 12.

[0021] (Embodiment 3) Figure 8 shows the main parts of a fitting for renovation according to the third embodiment of the present invention. The fitting for renovation illustrated here is a door used at the entrance of a building such as a detached house, similar to the first embodiment, but differs from the first embodiment in the configuration of the existing sill attached to the skeleton B.

[0022] That is, the existing lower frame 2b to be renovated in the third embodiment has the same components as the first embodiment: an existing frame body 2ba, an existing outer support wall 2bb, an existing inner support wall 2bc, an existing doorstop wall 2bd, an existing sealant attachment portion 2be, an existing inner recessed wall 2bf, and an existing inner sight wall 2bg. However, the dimensions of the existing frame body 2ba along the projection direction are larger than those of the first embodiment, and it also includes an existing auxiliary lower frame portion 2bh. That is, the existing lower frame 2b in the third embodiment has a dimension along the projection direction of the existing frame body 2ba set so that when a new frame body 10 is placed on the inner periphery, it extends beyond the position of the bridge material 12C to the outside of the room. Furthermore, compared to the first embodiment, the existing frame body 2ba is located at a larger distance from the entrance porch E, and an existing auxiliary lower frame portion 2bh is located between the entrance porch E and the existing frame body 2ba. The existing auxiliary lower frame portion 2bh is attached between the existing outer support wall portion 2bb and the existing inner support wall portion 2bc, and has an existing auxiliary outer wall portion 2bi that is positioned on the extension of the existing outer support wall portion 2bb in the portion that faces the outside of the room.

[0023] The insulating member 40 is the same as in embodiment 1, and is arranged on the expected surface of the existing lower frame 2b that will be the inner periphery of the existing frame main body 2ba, in a state where it abuts or is closely opposed to both the indoor frame portion 12A and the outdoor frame portion 12B of the new lower frame 12.

[0024] The frame support member 30 is attached to the existing auxiliary lower frame portion 2bh by screwing a screw S1 into the existing auxiliary outer wall portion 2bi via the sight piece 31, with the sight piece 31 protruding inward from the inner peripheral projection surface of the existing frame body 2ba. The extension dimension of the sight piece 31 from the existing frame body 2ba to the inner peripheral side is set to match the dimension from the outer peripheral projection surface of the new frame body 12a to the inner peripheral projection surface of the existing frame body 2ba when the new frame body 12a is positioned horizontally with the outer peripheral edge surface of the new inner sight wall portion 12e abutting against the existing frame body 2ba. Other components similar to those in embodiment 1 are designated by the same reference numerals.

[0025] In the third embodiment described above, the position of the interior side of the new sill 12 is determined by the outer peripheral edge of the new inner sight wall 12e abutting against the inner peripheral projected surface of the existing frame body 2ba via the insulating member 40. Meanwhile, the exterior side of the new sill 12 is determined by the outer peripheral projected surface of the new frame body 12a abutting against the projected piece 32 of the frame support member 30. This allows the posture of the new sill 12 to be accurately determined based on the position of the existing sill 2b, eliminating the need for adjustment work at the renovation site and simplifying the work. Furthermore, because the insulating member 40 is positioned in contact with or facing the interior frame portion 12A and the exterior frame portion 12B of the new sill 12, the frame support member 30 does not form a thermal bridge, eliminating concerns about impairing the insulation properties of the new sill 12. In the third embodiment, a baseboard N is arranged between the newly constructed exterior visible wall 12b and the entrance porch E. The upper end of this baseboard N is connected to the attachment 20 via the mounting piece n1.

[0026] (Fourth embodiment) 9 shows the main parts of a fitting for renovation according to embodiment 4 of the present invention. The fitting for renovation illustrated here is a door used at the entrance of a building such as a detached house, similar to embodiment 1, but differs from embodiment 1 in the configuration of the existing sill attached to the skeleton B and the configuration of the heat insulating member 240.

[0027] Specifically, the existing lower frame 3b to be renovated in the fourth embodiment comprises an outer frame portion 3A and an inner frame portion 3B formed from a metal such as an aluminum alloy, and an existing bridge member 3C formed from a heat insulating material. The outer frame portion 3A and the inner frame portion 3B are connected via the existing bridge member 3C. The outer frame portion 3A includes an existing outer frame body 3ba, an existing inner frame body 3bb, and an existing outer sight wall portion 3bc. The existing outer frame body 3ba is a flat plate extending approximately horizontally along the projection direction. The existing inner frame body 3bb protrudes slightly inward from the edge of the existing outer frame body 3ba located on the interior side, and then gradually slopes inward toward the interior side. The existing inner frame body 3bb has an existing bridge attachment portion 3bd on its interior edge, which opens to the interior circumference. An existing bridge member 3C is disposed so as to protrude from the existing bridge attachment portion 3bd to the interior circumference. The existing outer frame body 3ba and the existing inner frame body 3bb are dimensioned along the projected direction from the interior edge of the existing inner frame body 3bb to the exterior edge of the existing outer frame body 3ba, so that when a new frame body 10 is placed on the interior circumference, the bridge member 12C will extend to the exterior. The existing exterior sight wall portion 3bc extends from the exterior edge of the existing outer frame body 3ba toward the exterior circumference. In the fourth embodiment, as in the third embodiment, the existing outer frame body 3ba is positioned far enough from the entrance porch E that the existing exterior sight wall portion 3bc is dimensioned to extend from the entrance porch E to the existing outer frame body 3ba. The inner frame portion 3B extends almost horizontally along the projection direction, and has an existing seal material attachment portion 3be on the outside of the room that opens toward the outside, and an existing bridge attachment portion 3bf that opens toward the outer periphery. The inner edge of the existing bridge material 3C is attached to the existing bridge attachment portion 3bf.

[0028] The insulating material 240 is in the form of a sheet and is arranged to cover the prospective inner peripheral surface of the existing outer frame body 3ba. The thickness of the insulating material 240 is set so that when the new frame body 12a is placed horizontally with the outer peripheral edge surface of the new inner sight wall 12e abutting against the indoor-side portion of the existing inner frame body 3bb, the insulating material 240 can abut against or face closely to the bridge mounting portion 12A2 of the indoor-side frame portion 12A and the bridge mounting portion 12B2 of the outdoor-side frame portion 12B.

[0029] The frame support member 30 is attached to the existing lower frame 3b by screwing a screw S1 into the existing outer sight wall 3bc via the sight piece 31, with the sight piece 31 protruding inward from the inner circumferential surface of the existing inner frame body 3bb. The extension dimension of the sight piece 31 from the existing inner frame body 3bb to the inner circumferential side is set to a dimension that allows the mounting piece n1 of the baseboard N to be sandwiched between the outer circumferential surface 21a of the attachment 20 and the sight piece 32 when the new frame body 12a is positioned horizontally with the outer circumferential edge surface of the new inner sight wall 12e abutting against the existing inner frame body 3bb. Other components similar to those in the first embodiment are designated by the same reference numerals.

[0030] In the fourth embodiment described above, the position of the interior-facing portion of the new sill 12 is determined by the outer peripheral edge of the new inner sight wall 12e abutting against the inner peripheral surface of the existing outer frame body 3ba. Meanwhile, the exterior-facing portion of the new sill 12 is determined by abutting against the projection piece 32 of the frame support member 30 via the attachment 20 and the mounting piece n1 of the baseboard N. This allows the posture of the new sill 12 to be accurately determined based on the position of the existing sill 3b, eliminating the need for adjustment work at the renovation site and simplifying the work. Furthermore, because the insulating member 240 is positioned in contact with or facing the interior frame portion 12A and the exterior frame portion 12B of the new sill 12, the frame support member 30 does not form a thermal bridge, eliminating concerns about impairing the insulating properties of the new sill 12.

[0031] In the above-described embodiment, a door used at the entrance of a building is exemplified as a renovation fixture, but the present invention can also be applied to other fixtures, such as sliding doors. Furthermore, the new lower frame 12 constituting the new frame body 10 is exemplified as having an interior frame portion 12A and an exterior frame portion 12B connected by a bridge member 12C. However, the present invention is not limited to this. The new lower frame does not need to have a bridge member and may be integrally molded from metal, or, like the new upper frame, may have an exterior metal frame portion and an interior resin frame portion. Furthermore, although a spacer D is provided in the gap between the frame support member 30 and the entrance porch E, the provision of a spacer D is not necessarily required.

[0032] As described above, the renovation fittings of the present invention are fittings for renovation that have a new lower frame of a new frame body on the inner side of an existing lower frame attached to a main body, and are characterized in that the new lower frame has an opposing wall portion that faces the inner visible surface of the existing lower frame in the portion located on the inside of the room, and a frame support member is attached to the existing lower frame to support the portion of the new lower frame located on the outside of the room. According to this invention, since the frame support members are attached to the existing sill, the posture of the new sill can be accurately determined based on the position of the existing sill, regardless of the height of the entrance porch. This eliminates the need for adjustment work at the renovation site, making the work easier.

[0033] The present invention is also characterized in that, in the above-mentioned renovation fittings, the newly installed lower frame is provided with an attachment that is interposed between it and the frame support member. According to this invention, by providing an attachment, the portion of the newly installed lower frame located on the outdoor side can be supported on the frame support member via the attachment.

[0034] In addition, the present invention is characterized in that, in the above-mentioned renovation fittings, the newly installed lower frame has a metal indoor frame portion and an outdoor frame portion connected via a bridge material. According to this invention, the thermal insulation properties of the renovation fittings can be improved.

[0035] The present invention is also characterized in that, in the above-mentioned renovation fittings, an insulating member is provided on the outer peripheral portion of the newly installed lower frame in a position that blocks heat transfer between the indoor frame portion and the outdoor frame portion. According to this invention, an insulating member is provided at a position that blocks heat transfer between the indoor frame portion and the outdoor frame portion of the newly installed frame body, so there is no risk of insulation being impaired due to the provision of a frame support member.

[0036] The present invention is also characterized in that, in the above-mentioned renovation fitting, the insulating member is in the form of a sheet and is arranged between the indoor frame portion and the outdoor frame portion. According to this invention, since the heat insulating member is interposed between the indoor frame portion and the outdoor frame portion, there is no risk of the frame support member becoming a thermal bridge.

[0037] The present invention is also characterized in that, in the above-mentioned renovation fitting, the insulating member is interposed between the existing lower frame and the frame support member. According to this invention, since the insulating member is interposed between the existing lower frame and the frame support member, there is no risk of the frame support member becoming a thermal bridge.

[0038] The present invention is also characterized in that, in the above-mentioned renovation fittings, the frame support member has a sight piece extending in the sight direction and a sight piece extending in the sight direction from the joint edge portion on the inner periphery of the sight piece, and the sight piece and the sight piece each have a guide groove for breaking that extends along the joint edge portion. According to this invention, the dimensions of the frame support member can be easily adjusted. [Explanation of symbols]

[0039] 1b, 2b, 3b existing lower frame, 10 new frame body, 12 new lower frame, 12A indoor frame part, 12B outdoor frame part, 12C bridge material, 12e new interior facing wall part, 20 attachment, 30 frame support member, 31 facing piece, 32 facing piece, 33 guide groove, 40, 140, 240 heat insulating material, B body

Claims

1. A renovation fitting that includes a new lower frame of a new frame body on the inner periphery of an existing lower frame attached to a skeleton, This renovation fitting is characterized in that the newly installed lower frame has an opposing wall portion facing the inner peripheral visible surface of the existing lower frame in the portion located on the inside of the room, and a frame support member is attached to the existing lower frame to support the portion of the newly installed lower frame located on the outside of the room.

2. The renovation fitting according to claim 1, characterized in that the newly installed lower frame is provided with an attachment interposed between it and the frame support member.

3. The renovation fitting according to claim 1, characterized in that the new lower frame has a metal indoor frame portion and an outdoor frame portion connected via a bridge material.

4. A renovation fitting as described in claim 3, characterized in that an insulating member is provided on the outer peripheral portion of the newly installed lower frame in a position that blocks heat transfer between the indoor frame portion and the outdoor frame portion.

5. The renovation fitting according to claim 4, characterized in that the heat insulating member is in the form of a sheet and is arranged between the indoor frame portion and the outdoor frame portion.

6. The renovation fitting according to claim 4, characterized in that the insulating member is interposed between the existing lower frame and the frame support member.

7. The frame support member has a sight piece extending in the sight direction and a sight piece extending in the sight direction from the joint edge portion on the inner periphery of the sight piece, and the sight piece and the sight piece each have a guide groove for breaking that extends along the joint edge portion.

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