JP2016069959A - Composite window frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite window frame for providing excellent heat insulation performance and the dew condensation prevention effect, while easily executing framing work, for enhancing a degree of freedom of settlement and appearance design to a building opening part.SOLUTION: A window frame of a sash installed in a building opening part X, comprises a metal frame 6 and a resin frame 7 for covering an indoor side inner peripheral part of the metal frame 6, and the resin frame 7 comprises hollow constitution parts 11a, 13a, and 15a formed only of the resin frame 7 or formed of the resin frame 7 and the metal frame 6 and contact parts 11b, 13b, and 15b for contacting with a heat insulation material 5 provided between mutual ones of an edge part Xa of the building opening part X and the metal frame 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a composite window frame including a metal frame and a resin frame for a window frame of a sash attached to a building opening.

  Conventionally, sash window frames mounted on building openings have been mainly composed of metal frames made of aluminum or the like, but in recent years, heat insulation performance has been improved, For the purpose of preventing condensation on the indoor side, for example, a composite window frame combining a metal frame and a resin frame as shown in Patent Document 1 is used. In addition, as a composite window frame having higher heat insulation performance and anti-condensation effect, a resin window frame composed only of a resin frame as shown in Patent Document 2, for example, is also known. Yes.

JP 2002-180748 A JP-A-10-238245

  By the way, in the composite window frame of patent document 1, although the indoor side exposed part of a metal frame is covered with the resin frame, since the thickness of the resin frame is thin and the influence of a metal frame is inevitable, the heat insulation performance and the effect of preventing dew condensation are still in effect. It was insufficient. Further, the resin window frame of Patent Document 2 is obtained by rectangularly framing an upper frame, a lower frame, and left and right vertical frames, but when joining these frames, both ends of each frame are elongated. Generally, the cut surfaces of the frames to be joined are welded together after being cut at 45 degrees with respect to the direction. In other words, since the upper frame, the lower frame, and the left and right vertical frames cannot be welded unless they have the same cross-sectional shape, the composite window frame can be freely accommodated in the building opening and in terms of exterior design. There is a problem that the degree is inferior. In addition, if it is a composite window frame, it can be framed with screws using screw pockets provided in the metal frame, but in the case of a resin window frame, each frame must be welded, and it takes time for the frame work There are also challenges.

  The present invention has an object to solve such problems, and has a high degree of freedom in the design and appearance design of the building opening, and can easily perform the frame work, It aims at providing the composite window frame from which the effect of the outstanding heat insulation performance and dew condensation prevention is acquired.

The composite window frame according to the present invention includes a metal frame and a resin frame that covers the indoor side inner periphery of the metal frame,
The resin frame is formed by only the resin frame or a hollow component formed by the resin frame and the metal frame, and heat insulation provided between the edge of the building opening and the metal frame. It has the contact part which material contacts, It is characterized by the above-mentioned.

  Moreover, it is preferable that the said contact part faces the surface side of the said hollow structure part.

  Further, the metal frame has a metal lower frame along a lower edge portion of the building opening, and the metal lower frame has a water blocking wall extending upward on the outdoor side from the hollow component. It is preferable.

  Moreover, it is preferable that the said resin frame has a resin lower frame in alignment with the lower edge part of the said building opening part, and is located above the upper end of the said water stop wall at the upper end of the said resin lower frame.

  In the present invention, by covering the indoor side inner peripheral portion of the metal frame with high thermal conductivity with a resin frame with low thermal conductivity, it becomes difficult for outdoor heat to be transmitted indoors, and the hollow structure provided in this resin frame The heat transfer can be further suppressed by the portion. Furthermore, since the contact part which contacts this heat insulating material is provided in the resin frame for the heat insulating material provided between the edge of the building opening and the metal frame, the metal frame and the edge of the building opening Since the heat transfer between the two can be prevented by the heat insulation line formed by the heat insulating material and the resin frame, excellent heat insulation performance and the effect of preventing dew condensation can be obtained.

  When the contact portion faces the front surface side of the hollow component portion, the heat insulation line formed of the heat insulating material and the resin frame includes a hollow component portion that is more difficult to transmit heat, so that the heat insulation performance and condensation prevention can be achieved. The effect can be further enhanced.

  When installing a water stop wall that extends upward on the outdoor side of the metal lower frame, it is possible to prevent rainwater from flowing from the outdoor side to the indoor side, and to prevent the heat from the water stop wall from flowing. Transmission can be effectively suppressed by the hollow component.

  When the upper end of the resin lower frame is positioned higher than the upper end of the water blocking wall, since the outside air in contact with the water blocking wall flows toward the building opening, the resin lower frame bypasses the The influence of the water blocking wall on the transmission can be suppressed.

It is a longitudinal cross-sectional view which shows the sash to which 1st embodiment of the composite window frame according to this invention is applied. It is a cross-sectional view of the first embodiment. It is a longitudinal cross-sectional view which shows the sash to which 2nd embodiment of the composite window frame according to this invention is applied. It is a figure which shows only the right side about the cross-sectional view of 2nd embodiment. It is a longitudinal cross-sectional view which shows the sash to which 3rd embodiment of the composite window frame according to this invention is applied. It is a figure which shows only the right side about the cross-sectional view of 3rd embodiment.

  Hereinafter, a sash to which the first embodiment of the composite window frame according to the present invention is applied will be described in detail with reference to FIGS. 1 and 2. In this specification, “left” and “right” are based on a case where the outdoor side is viewed from the indoor side. Further, claws for fitting members together, tight materials for airtightness, and the like are omitted.

  The sash 1 of this embodiment is composed of a composite window frame 2 attached to the building opening X, an external shoji 3 and an internal shoji 4 that are retractably accommodated in the composite window frame 2, the composite window frame 2 and the building opening. The heat insulating material 5 provided between the edge Xa of the part X is provided. The composite window frame 2 is composed of a metal frame 6 and a resin frame 7.

  As shown in FIG. 1, the metal frame 6 includes a metal upper frame 8, a metal lower frame 9, and a pair of metal vertical frames 10 (see FIG. 2) provided on the left and right sides, which are formed of an extruded material made of aluminum, for example. It is composed of a square framework. The metal upper frame 8, the metal lower frame 9, and the metal vertical frame 10 are provided with screw pockets (not shown) and connected by screws (not shown).

  Here, the metal upper frame 8 includes a metal upper frame body 8a. The outer cross-sectional shape of the metal upper frame body 8a is generally rectangular (the upper surface is inclined upward from the outdoor side toward the indoor side). Further, on the upper surface of the metal upper frame main body 8a, a metal upper frame upward projecting piece 8b that protrudes upward on the indoor side is provided.

  The metal lower frame 9 includes a metal lower frame main body 9a. The outer cross-sectional shape of the metal lower frame main body 9a is generally rectangular (the middle portion of the lower surface is inclined upward from the outdoor side toward the indoor side). Further, a metal lower frame upward protruding piece 9b protruding upward on the indoor side is provided on the upper surface of the metal lower frame main body 9a, and a metal lower frame downward protruding piece protruding downward on the indoor side of the lower surface. 9c is provided. As will be described later, the metal lower frame upward protruding piece 9b functions as a water blocking wall that prevents rainwater or the like flowing on the upper surface of the metal lower frame main body 9a from flowing into the indoor side.

  As shown in FIG. 2, the metal vertical frame 10 includes a metal vertical frame body 10 a having a substantially square cross-sectional shape as a whole. The metal vertical frame main body 10a is provided with a metal vertical frame inward projecting piece 10b which is located on the building opening X side (the side where the external shoji 3 and the inner pouch 4 are arranged) and protrudes toward the indoor side. Yes. The metal vertical frame 10 may be provided with a metal vertical frame reinforcement member 10c as shown in the left metal vertical frame 10 in FIG. 2, and the metal vertical frame reinforcement member 10c may be disposed on the right metal vertical frame 10c. It may be arranged on the frame 10.

  The resin frame 7 is made of, for example, a synthetic resin extruded material such as vinyl chloride or ABS, and includes a resin upper frame 11 and a resin lower frame 12 (see FIG. 1), and a pair of resin vertical frames 13 provided on the left and right. (See FIG. 2), each of which is attached to a metal frame 6 to form a rectangular frame. The resin frame 7 is attached to the metal frame 6 so as to cover the inner periphery of the metal frame 6 over the entire circumference.

  As shown in FIG. 1, the resin upper frame 11 includes a resin upper frame main body 11b having a resin upper frame hollow component 11a therein. The resin upper frame main body 11b has an outer cross-sectional shape such as a combination of a substantially rectangular upper part extending long from the outdoor side toward the indoor side and a substantially rectangular lower part connected to the lower surface on the indoor side of the upper part. Have. A plurality of resin upper frame partition walls 11c are provided inside the resin upper frame main body 11b, and the resin upper frame hollow component 11a is divided into a plurality of parts. The resin upper frame main body 11b is provided with a resin upper frame inward protruding piece 11d that protrudes toward the indoor side below. Further, on the lower surface of the resin upper frame main body 11b, there are provided an upper outer rail 11e for guiding the outer shoji 3 and an upper inner rail 11f for guiding the inner shroud 4.

  The resin lower frame 12 includes a first resin lower frame 14 positioned on the outdoor side and a second resin lower frame 15 positioned on the indoor side. Here, the 1st resin lower frame 14 is provided with the 1st resin lower frame main body 14b which has the 1st resin lower frame hollow structure part 14a inside. The first resin lower frame main body 14b has an outer cross-section such as a combination of a substantially rectangular lower portion extending long from the outdoor side toward the indoor side and a substantially rectangular upper portion connected to the indoor side upper surface of the lower portion. It has a shape. A plurality of first resin lower frame partition walls 14c are provided inside the first resin lower frame main body 14b, and the first resin lower frame hollow component 14a is divided into a plurality of parts. Further, on the upper surface of the first resin lower frame main body 14b, there are provided a lower outer rail 14d for guiding the shoji 3 and a lower inner rail 14e for guiding the inner shroud 4. And the 2nd resin lower frame 15 is provided with the 2nd resin lower frame main body 15b which has the 2nd resin lower frame hollow structure part 15a inside. The outer cross-sectional shape of the second resin lower frame body 15b is substantially square. In the present embodiment, one second resin lower frame partition wall 15c is provided inside the second resin lower frame main body 15b, and the second resin lower frame hollow component 15a is divided into two. The second resin lower frame main body 15b is provided with a second resin lower frame inward protruding piece 15d that protrudes upward toward the indoor side.

  As shown in FIG. 2, the resin vertical frame 13 includes a resin vertical frame main body 13b having a resin vertical frame hollow component 13a therein. The resin vertical frame body 13b includes a substantially rectangular outdoor side portion that extends long from the outdoor side toward the indoor side, and a substantially rectangular indoor side portion that protrudes toward the building opening X side with respect to the outdoor side portion. It has an external cross-sectional shape as combined. A plurality of resin vertical frame partition walls 13c are provided inside the resin vertical frame hollow component 13a, and the resin vertical frame hollow component 13a is divided into a plurality of portions. On the side of the building opening X on the indoor side surface of the resin vertical frame main body 13b, a resin vertical frame inward protruding piece 13d protruding toward the indoor side is provided. Further, on the wall of the resin vertical frame main body 13b on the building opening X side, an outer protrusion 13e that enters the outer reed 3 when the outer reed 3 is closed and an inner protrusion that enters the inner reed 4 when the inner reed 4 is closed. 13f is provided.

  The external shoji 3 is one in which a multi-layer glass 17 is placed inside a housing 16 made of resin in this embodiment. The casing 16 is composed of an upper casing 16a and a lower casing 16b (see FIG. 1), and a pair of vertical casings 16c (see FIG. 2) provided on the left and right sides, and these are assembled into a rectangular shape. . In addition, the inner shoji 4 has the same configuration as the outer shoji 3.

  The heat insulating material 5 is provided between the edge Xa of the building opening X and the metal frame 6 so as to surround the building opening X over the entire circumference. Specifically, as shown in FIG. 1, in the upper portion of the heat insulating material 5, the upper inner surface located on the indoor side is in contact with the edge portion Xa, and the upper outer surface located on the outdoor side is the metal upper frame upward protruding piece 8 b. The wall surface on the building opening X side comes into contact with the resin upper frame body 11b. Moreover, in the lower part of the heat insulating material 5, the lower inner surface located on the indoor side is in contact with the edge portion Xa, the lower outer surface located on the outdoor side is in contact with the metal lower frame downward projecting piece 9c, and on the building opening X side. A wall surface contacts the metal lower frame main body 9a and the second resin lower frame main body 15b. Further, as shown in FIG. 2, on the left and right sides of the heat insulating material 5, the inner surface of the vertical portion located on the indoor side contacts the edge portion Xa, and the outer surface of the vertical portion located on the outdoor side has an L-shaped cross section. At the same time, it contacts the frame Y that reinforces the building opening X, and the wall surface on the building opening X side contacts the metal vertical frame inwardly protruding piece 10b and the resin vertical frame main body 13b. That is, in this embodiment, the contact portion where the heat insulating material 5 contacts the resin frame 7 is the upper surface of the resin upper frame body 11b shown in FIG. 1, the lower surface of the second resin lower frame body 15b, and the resin shown in FIG. It becomes the wall surface on the opposite side to the building opening X in the vertical frame main body 13b. The heat insulating material 5 may be attached to the composite window frame 2 in advance, or may be installed between the composite window frame 2 and the building opening X when the composite window frame 2 is attached to the building opening X. . Here, the heat insulating material 5 is preferably a foamed resin heat insulating material or a fiber heat insulating material. Moreover, since the heat insulating material 5 is difficult to be screwed when attached, and the screw becomes a factor constituting a thermal bridge, the metal frame 6 and the heat insulating material 5 are preferably joined with a double-sided tape or an adhesive.

  In the composite window frame 2 configured as described above, since the indoor side inner peripheral portion of the metal frame 6 having high thermal conductivity is covered with the resin frame 7 having low thermal conductivity, outdoor heat is indoors. It becomes difficult to be transmitted to. Further, the resin upper frame 11, the first resin lower frame 14, the second resin lower frame 15, and the resin vertical frame 13 constituting the resin frame 7 are respectively formed of a resin upper frame hollow component 11 a and a first resin lower frame hollow. The constituent part 14a, the second resin lower frame hollow constituent part 15a, and the resin vertical frame hollow constituent part 13a are provided, whereby heat transfer in the resin frame 7 can be further suppressed. And since the heat insulating material 5 and the resin frame 7 are contacting in the contact part mentioned above, the continuous heat insulation line will be formed by the heat insulating material 5 and the resin frame 7, and the metal frame 6 and the building opening part Heat transfer to and from the edge Xa of X can be prevented. That is, according to the present embodiment, excellent heat insulation performance and the effect of preventing condensation can be obtained.

  In particular, in the present embodiment, the upper surface of the resin upper frame body 11b serving as the contact portion, the lower surface of the second resin lower frame body 15b, and the wall surface on the opposite side to the building opening X in the resin vertical frame body 13b are respectively on the resin. Facing the frame hollow component 11a, the second resin lower frame hollow component 15a, and the resin vertical frame hollow component 13a, the heat insulation line described above includes these hollow components that are less likely to transmit heat. It will be. Thereby, the heat insulation performance and the effect of preventing condensation can be further enhanced.

  Moreover, in the metal lower frame 9, since the metal lower frame upward protrusion 9b is provided on the upper surface of the metal lower frame main body 9a, the inflow of rainwater or the like flowing on the upper surface of the metal lower frame main body 9a into the indoor side, This metal lower frame upward protrusion piece 9b can prevent this. Moreover, since the metal lower frame upward protrusion 9b is provided on the outdoor side of the second resin lower frame hollow component 15a, the heat transfer from the metal lower frame upward protrusion 9b toward the indoor side is transferred to the bottom of the second resin. It can suppress effectively with the frame hollow structure part 15a.

  Further, as shown in FIG. 1, the upper end of the metal lower frame upward protruding piece 9b is positioned below the upper end of the second resin lower frame 15 located on the indoor side of the metal lower frame upward protruding piece 9b, Since the first resin lower frame main body 14b is also provided on the outdoor side of the metal lower frame upward protruding piece 9b, the influence of the metal lower frame upward protruding piece 9b on heat transfer can be more reliably suppressed.

  Next, a sash to which the second embodiment of the composite window frame according to the present invention is applied will be described in detail with reference to FIGS. 3 and 4. The sash 21 of this embodiment includes a composite window frame 22 attached to the building opening X, a sliding shoji 23 provided in the composite window frame 22, and the composite window frame 2 and the edge Xa of the building opening X. The heat insulating material 25 provided between each other is provided. The composite window frame 22 includes a metal frame 26 and a resin frame 27.

  The metal frame 26 is composed of a metal upper frame 28, a metal lower frame 29, and a pair of metal vertical frames 30 provided on the left and right sides, which are rectangularly framed.

  As shown in FIG. 3, the metal upper frame 28 includes a metal upper frame main body 28a. The metal upper frame main body 28a has a substantially rectangular shape as a whole, and has an outer cross-sectional shape in which a lower corner portion on the outdoor side enters the inside.

  The metal lower frame 29 includes a metal lower frame main body 29a. The outer cross-sectional shape of the metal lower frame main body 29a is generally rectangular (the indoor side of the lower surface is inclined upward). Further, on the upper surface of the metal lower frame main body 29a, a metal lower frame upward protruding piece 29b protruding upward at an intermediate portion thereof, and a second metal lower frame upward protruding piece 29d protruding upward on the indoor side thereof, Is provided. The metal lower frame upward protruding piece 29b functions as the water blocking wall described above. Further, a metal lower frame downward projecting piece 29c is provided on the lower surface of the metal lower frame main body 29a so as to protrude downward on the indoor side.

  And as shown in FIG. 4, the metal vertical frame 30 is provided with the metal vertical frame main body 30a which becomes a substantially square cross-sectional shape as a whole. On the indoor side of the metal vertical frame main body 30a, a metal vertical frame protruding piece 30b protruding along the edge Xa of the building opening X toward the opposite side of the building opening X is provided.

  The resin frame 27 is composed of a resin upper frame 31, a resin lower frame 32, and a pair of resin vertical frames 33 provided on the left and right sides. It is attached to the metal frame 26 so as to cover it.

  As shown in FIG. 3, the resin upper frame 31 includes a resin upper frame main body 31b having a resin upper frame hollow component 31a therein. The resin upper frame main body 31b has an outer cross-sectional shape in which a substantially rectangular upper part and a substantially rectangular lower part protruding to the outdoor side with respect to the upper part are combined. In addition, one resin upper frame partition wall 31c is provided inside the resin upper frame main body 31b, and the resin upper frame hollow component 31a is divided into two. On the indoor side surface of the resin upper frame main body 31b, a resin upper frame inward protruding piece 31d protruding toward the indoor side is provided at an intermediate portion in the height direction.

  The resin lower frame 32 includes a resin lower frame main body 32b having a resin lower frame hollow component 32a therein. The outer cross-sectional shape of the resin lower frame main body 32b is substantially rectangular as a whole, and is stepped so that the outdoor side surface and the indoor side surface narrow toward each other downward. One resin lower frame partition wall 32c is provided inside the resin lower frame main body 32b, and the resin lower frame hollow component 32a is divided into two. Two resin lower frame downward projecting pieces 32d extending downward and in contact with the metal lower frame 29 are provided on the lower surface of the resin lower frame main body 32b. A resin lower frame inward protruding piece 32e protruding toward the indoor side is provided at a height direction intermediate portion on the indoor side surface of the resin lower frame main body 32b. The resin lower frame 32 may be provided with a resin lower frame reinforcing member 32f as shown in FIG.

  And as shown in FIG. 4, the resin vertical frame 33 is equipped with the resin vertical frame main body 33b which has the resin vertical frame hollow structure part 33a inside. The outer cross-sectional shape of the resin vertical frame main body 33b is substantially rectangular as a whole. A resin vertical frame inward projecting piece 33d that protrudes indoors is provided on the indoor opening side of the resin vertical frame body 33b on the building opening X side.

  The sliding shoji 23 has a double-glazed glass 37 placed inside a housing 36 made of metal in this embodiment. The housing 36 includes an upper rod 36a, a lower rod 36b, and a pair of vertical rods 36c provided on the left and right sides, and these are assembled into a square shape.

  The heat insulating material 25 is provided between the edge Xa of the building opening X and the metal frame 26 so as to surround the building opening X over the entire circumference. As shown in FIG. 3, the heat insulating material 25 has an upper inner surface located on the indoor side in contact with the edge Xa and an upper outer surface located on the outdoor side in contact with the metal upper frame body 28a. The wall surface on the part X side contacts the resin upper frame hollow component 31a. Moreover, in the lower part of the heat insulating material 25, the lower inner surface located on the indoor side is in contact with the edge portion Xa, and the lower outer surface located on the outdoor side is the resin lower frame main body 32b, the metal lower frame upward protruding piece 29b, the metal lower The frame main body 29a and the metal lower frame downward projecting piece 29c are in contact with each other. As shown in FIG. 4, on the left and right sides of the heat insulating material 25, the inner surface of the vertical portion located on the indoor side is in contact with the edge portion Xa, and the outer surface of the vertical portion located on the outdoor side is the metal vertical frame main body 30a and the metal. The wall surface on the building opening X side comes into contact with the resin vertical frame main body 33b in contact with the vertical frame protrusion piece 30b. That is, in this embodiment, the contact portion where the heat insulating material 25 contacts the resin frame 27 is the indoor side surface of the resin upper frame body 31b shown in FIG. 3, the indoor side surface of the resin lower frame body 32b, and the resin shown in FIG. It becomes a wall surface on the opposite side to the building opening X in the vertical frame main body 33b.

  Also in the composite window frame 22 having such a configuration, as described in the composite window frame 2 of the first embodiment, excellent heat insulation performance and the effect of preventing condensation are obtained, and rainwater or the like flows into the indoor side. Can be prevented.

  Next, a sash to which the third embodiment of the composite window frame according to the present invention is applied will be described in detail with reference to FIGS. 5 and 6. The sash 21 ′ of this embodiment basically has the same configuration as that of the sash 21 of the second embodiment. The sash 21 ′ uses a resin upper frame 31 ′ instead of the resin upper frame 31. Instead of this, a sliding shoji 23 'is used.

  The resin upper frame 31 'includes a resin upper frame main body 31b' having a resin upper frame hollow component 31a 'inside. The resin upper frame main body 31b 'has an outer cross-sectional shape that is substantially rectangular as a whole. A resin upper frame inward protruding piece 31d 'protruding toward the indoor side is provided below the resin upper frame main body 31b'.

  In the present embodiment, the sliding shoji 23 'is a multi-layer glass 37' placed inside a housing 36 'made of synthetic resin. The housing 36 'is composed of an upper housing 36a', a lower housing 36b ', and a pair of vertical housings 36c' provided on the left and right, and these are assembled into a square shape.

  Also in the composite window frame 22 ′ having such a configuration, as in the composite window frame 22 of the second embodiment, excellent heat insulating performance and anti-condensation effect can be obtained, and rainwater and the like can be prevented from flowing into the indoor side. can do.

  The composite window frame according to the present invention is not limited to this embodiment, and various modifications can be made within the scope according to the claims. For example, although the hollow structure part (resin upper frame hollow structure part 11a etc.) provided in the resin frame illustrated what was formed only with the resin frame in the above-mentioned embodiment, for example, a U-shaped resin frame and a flat plate shape The hollow structure part formed between a resin frame and a metal frame may be sufficient by combining these metal frames. In the case where the hollow component is formed only with the resin frame, there is an advantage that the airtightness of the hollow component is maintained regardless of the mounting accuracy of the resin frame, but the hollow component is combined by combining the resin frame and the metal frame. When formed, since the area where the resin frame is in contact with the metal part is small, there is an advantage in terms of heat insulation.

  Moreover, even if the cross-sectional area of the hollow structural portion is relatively small, such as the resin upper frame hollow structural portion 11a shown in FIG. 1, the cross-sectional area of the resin upper frame hollow structural portion 31a shown in FIG. As such, it may be relatively large.

1, 2, 21 ': Sashes 2, 22, 22': Composite window frames 23, 23 ': Sliding shoji 3: External shoji 4: Inner shoji 5, 25: Heat insulating material 6, 26: Metal frame 7, 27: Resin Frames 8 and 28: Metal upper frame 8a, 28a: Metal upper frame main body 8b: Metal upper frame upward protruding piece 9, 29: Metal lower frame 9a, 29a: Metal lower frame main body 9b, 29b: Metal lower frame upward protruding piece 9c 29c: metal lower frame downward protrusion piece 29d: second metal lower frame upward protrusion piece 10, 30: metal vertical frame 10a, 30a: metal vertical frame body 10b: metal vertical frame inward protrusion piece 30b: metal vertical frame protrusion piece 10c: Metal vertical frame reinforcing members 11, 31, 31 ': Resin upper frames 11a, 31a, 31a': Resin upper frame hollow components 11b, 31b, 31b ': Resin upper frame bodies 11c, 31c: Resin upper frame partition walls 11d, 31d, 31d ′: Resin upper frame inward protruding piece 11e: Upper and outer rail 11 f: Upper inner rail 12, 32: Resin lower frame 32a: Resin lower frame hollow component 32b: Resin lower frame body 32c: Resin lower frame partition wall 32d: Resin lower frame downward protrusion 32e: Resin lower frame inward protrusion 32f: Resin lower frame reinforcing member 13, 33: Resin vertical frame 13a, 33a: Resin vertical frame hollow component 13b, 33b: Resin vertical frame body 13c: Resin vertical frame partition wall 13d, 33d: Resin vertical frame inward projecting piece 13e: outer protrusion 13f: inner protrusion 14: first resin lower frame 14a: first resin lower frame hollow component 14b: first resin lower frame body 14c: first resin lower frame partition wall 14d: lower outer rail 14e: lower Inner rail 15: second resin lower frame 15a: second resin lower frame hollow component 15b: second resin lower frame main body 15c: second resin lower frame partition wall 15d: second resin lower frame inward protruding pieces 16, 36 36 ′: Housings 16a, 36a, 36a ′: Upper housing 16b, 6b, 36b ': bottom rail 16c, 36c, 36c': vertical frame 17,37,37 ': insulating glass X: building opening Xa: edge Y: frame

Claims (4)

A sash window frame to be installed in a building opening,
A metal frame, and a resin frame that covers the inner periphery of the metal frame on the indoor side,
The resin frame is formed by only the resin frame or a hollow component formed by the resin frame and the metal frame, and heat insulation provided between the edge of the building opening and the metal frame. A composite window frame comprising a contact portion with which a material contacts.   The composite window frame according to claim 1, wherein the contact portion faces a surface side of the hollow component portion. The metal frame has a metal lower frame along the lower edge of the building opening,
The composite window frame according to claim 1, wherein the metal lower frame has a water blocking wall extending upward on the outdoor side from the hollow component. The resin frame has a resin lower frame along the lower edge of the building opening,
The composite window frame according to claim 3, wherein an upper end of the resin lower frame is positioned above an upper end of the water blocking wall.

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