Doors and windows

Abstract

To improve thermal insulation without impairing water-tightness and air-tightness.SOLUTION: A fitting includes a frame body 10 and sashes 20A, 20B arranged on the frame body 10 in such manner of sliding in the extending direction of a lower frame 14, wherein the lower frame (14 includes a metal-shaped material 120 molded from a metallic material and a resin-shaped material 140 molded from a resinous material, lateral rails 14A, 14B for guiding the sliding of the sashes 20A, 20B are composed of a lower inside width plate part 122 and a lower outer width plate part 128 provided on the metal-shaped material 120, and a lower inner rail cover part 142 and a lower outer rail cover part 146 provided on the resin-shaped material 140, and the lower inside width plate part 122, the lower outer width plate part 128, the lower inner rail cover part 142, and the lower outer rail cover part 146 are provided with lower fitting parts 122b, 128b, 142a, 146a for restricting movement in the direction separating from each other by fitting to each other.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a fitting considering heat insulation.

Background Art

[0002] In fittings such as a sliding window where a shoji is slidably disposed with respect to a frame, considering heat insulation, a rail for guiding the sliding of the shoji is constituted by a metal profile formed of a metal such as an aluminum alloy and a resin profile formed of resin. That is, a metal rail portion is provided in the metal profile and a resin rail portion is provided in the resin profile, and the rail is constituted by arranging these metal rail portions and resin rail portions side by side in the expected direction (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, it is necessary to ensure watertightness and airtightness between the frame and the shoji. In the above-described shoji, tight materials are provided at portions of the lower frame facing the rail, and these tight materials are made to abut against the expected contact surface facing the outdoor side of the rail and the contact surface facing the indoor side, respectively. However, the resin rail portion provided in the resin profile has a larger molding error and heat deformation amount (thermal expansion coefficient) compared to the metal rail portion provided in the metal profile, so it is difficult to uniformly abut the tight material over the entire length along the longitudinal direction of the lower frame, and there is a concern that watertightness and airtightness may be impaired.

[0005] In view of the above circumstances, the present invention aims to provide building materials that can improve thermal insulation without compromising watertightness or airtightness. [Means for solving the problem]

[0006] To achieve the above objective, the joinery according to the present invention comprises a frame body in which left and right vertical frames, an upper frame, and a lower frame are assembled on all four sides, and a sliding screen disposed on the frame body in a state that it slides in the extending direction of the lower frame, wherein the lower frame comprises a metal profile formed from metal and a resin profile formed from resin, and the horizontal rail that guides the sliding of the sliding screen is composed of a metal rail portion provided on the metal profile and a resin rail portion provided on the resin profile, and the metal rail portion and the resin rail portion are provided with a lower fitting portion that restricts movement in directions away from each other by fitting together. The metal rail portion and the resin rail portion are joined to each other such that the joint is exposed on the inner circumference side surface of the horizontal rail, the lower fitting portion of the metal rail portion is fitted to the lower fitting portion of the resin rail portion so as to support it from below, the lower fitting portion of the metal rail portion and the lower fitting portion of the resin rail portion are arranged side by side in the depth direction when fitted together, the sliding door is provided with a tight material that abuts against the surface along the visible direction of the horizontal rail, and the tight material abuts against the metal rail portion and the resin rail portion so as to sandwich the parts of the lower fitting portions that are arranged side by side. It is characterized by having this feature. [Effects of the Invention]

[0007] According to the present invention, the metal rail portion and the resin rail portion are fitted together by the lower fitting portion, restricting their movement in the direction away from each other. Therefore, molding errors and thermal deformation of the resin rail portion are suppressed by the metal rail portion. As a result, the sealing material provided on the shoji screen can be uniformly brought into contact with the lower frame over the entire length of the horizontal rail, making it possible to improve heat insulation while ensuring watertightness and airtightness. [Brief explanation of the drawing]

[0008] [Figure 1] This is a view of a door or window, which is an embodiment of the present invention, as seen from the interior side. [Figure 2] Figure 1 is a vertical cross-sectional view of the joinery shown. [Figure 3] Figure 1 is a cross-sectional view of the joinery shown. [Figure 4] Figure 1 shows the left vertical frame applicable to the joinery shown in Figure 1, with (a) being a cross-sectional view and (b) being an exploded cross-sectional view. [Figure 5]Figure 1 shows the right vertical frame applicable to the joinery shown in Figure 1, with (a) being a cross-sectional view and (b) being an exploded cross-sectional view. [Figure 6] Figure 1 shows the upper frame applicable to the joinery shown in Figure 1, with (a) being a vertical cross-sectional view and (b) being an exploded vertical cross-sectional view. [Figure 7] Figure 1 shows the lower frame applicable to the joinery shown in Figure 1, with (a) being a vertical cross-sectional view and (b) being an exploded vertical cross-sectional view. [Figure 8] This is a plan view of the lower frame applied to the joinery shown in Figure 1. [Figure 9] This is a vertical cross-sectional view of the lower frame applied to the joinery shown in Figure 1, divided at the meeting point. [Figure 10] This is a vertical cross-sectional view of the lower frame applied to the joinery shown in Figure 1, divided at the position of the inner sash. [Modes for carrying out the invention]

[0009] The following describes in detail preferred embodiments of the joinery according to the present invention with reference to the attached drawings. For convenience, the terms "depth direction" and "face direction" may be used below. The depth direction is the direction along the depth of the joinery, as indicated by arrow A in the figure. The surface along the depth direction may be referred to as the depth surface. The face direction is the direction along the vertical direction perpendicular to the depth direction, in the case of a frame that extends horizontally, such as a bottom frame. In the case of a frame that extends vertically, such as a vertical frame, the face direction is the direction along the horizontal direction perpendicular to the depth direction. The surface along the face direction may be referred to as the face surface.

[0010] Figures 1 to 3 show a window that is an embodiment of the present invention. The window described here is called a sliding window and comprises a frame 10, an outer sash 20A installed on the exterior side of the frame 10, and an inner sash 20B installed on the interior side of the frame 10. The frame 10 is constructed in a rectangular shape by assembling left and right vertical frames 11, 12, an upper frame 13, and a lower frame 14 around the four sides. The outer sash 20A is constructed with a rectangular double-glazed glass pane 21A and vertical frames 22A, an upper frame 23A, a lower frame 24A, and a vertical frame 25A installed around the four sides of the double-glazed glass pane 21A. Similarly, the inner sash 20B is constructed with a rectangular double-glazed glass pane 21B and vertical frames 22B, an upper frame 23B, a lower frame 24B, and a vertical frame 25B arranged around the four sides of the double-glazed glass pane 21B. In this embodiment, the outer sash 20A and the inner sash 20B are arranged to move along the longitudinal sides of the upper frame 13 and lower frame 14 relative to the frame 10, and when viewed from the interior side, the outer sash 20A is placed on the left side of the frame 10 and the inner sash 20B is placed on the right side, making it possible to close the opening of the frame 10. When the opening of the frame 10 is closed, the vertical frame located to the right of the outer sash 20A (hereinafter referred to as the meeting frame 25A) and the vertical frame located to the left of the inner sash 20B (hereinafter referred to as the meeting frame 25B) meet and are arranged side by side in the depth direction when viewed from the interior side. The vertical frames 22A, 22B, upper frames 23A, 23B, lower frames 24A, 24B, and meeting frames 25A, 25B that make up the sashes 20A, 20B are all extruded profiles molded from resin, and are configured to have a cross-sectional shape that is almost uniform along the entire length of the longitudinal side. In this embodiment, the shoji screens 20A and 20B are constructed using vertical frames 22A and 22B, upper frames 23A and 23B, and lower frames 24A and 24B that have the same cross-sectional shape and the same hue. The meeting frames 25A and 25B have the same hue as the vertical frames 22A, but have a different cross-sectional shape. In contrast, the vertical frames 11 and 12, upper frame 13, and lower frame 14 that constitute the frame body 10 are of a composite type, comprising metal profiles made from extruded profiles formed from metal such as aluminum alloy, and resin profiles made from extruded profiles formed from resin.The metal and resin profiles are also constructed to have a cross-sectional shape that is substantially uniform along their entire length.

[0011] The following describes in detail the configuration of the vertical frames 11, 12, upper frame 13, and lower frame 14 that constitute the frame and frame body 10 of the shoji screens 20A and 20B, and also explains the characteristic features of the present invention. As mentioned above, the frames 22A, 22B, 23A, 23B, 24A, and 24B of the shoji screens 20A and 20B are identical, so only the vertical frame 22A of the outer shoji screen 20A will be described, and the other frames will be given the same reference numerals. The meeting frames 25A and 25B are almost identical, so only the meeting frame 25A of the outer shoji screen 20A will be described, and the meeting frame 25B of the inner shoji screen 20B will be given the same reference numerals. Also, for convenience, in the following, the vertical frame located on the left side when viewed from the interior side will be referred to as the left vertical frame 11, and the vertical frame located on the right side will be referred to as the right vertical frame 12.

[0012] (Stile 22A) As shown in Figure 3, the vertical frame 22A is formed by integrally molding a frame base 31, a glass clamping piece 32, an inner rail guide 33, and an outer rail guide 34. The frame base 31 has a hollow shape with a roughly square cross-section. A glazing strip 35 is provided on the outer edge of the inner circumference of the frame base 31 via a glazing strip mounting groove 31a. The glazing strip 35 clamps the double-glazed glass 21A between itself and the glass clamping piece 32. The glass clamping piece 32 protrudes inward from the inner edge of the frame base 31 that faces the interior. The inner rail guide 33 protrudes outward from the outer edge of the frame base 31 that faces the interior, and the outer rail guide 34 protrudes outward from the outer edge of the frame base 31 that faces the exterior. The inner rail guide 33 and the outer rail guide 34 have a gap between them, and a tight material 36 is provided on the parts facing each other. The tight material 36 extends from the outer circumference of the inner rail guide 33 and the outer rail guide 34 in a direction toward each other.

[0013] (Meeting frame 25A) The meeting stile 25A is formed by integrally molding the stile base 31 and the glass clamping piece 32. The stile base 31 has a hollow shape with a roughly square cross-section. A glazing strip 35 is provided on the outer edge of the inner circumference of the stile base 31 via a glazing strip mounting groove 31a. The glazing strip 35 clamps the double-glazed glass 21A between itself and the glass clamping piece 32. The glass clamping piece 32 protrudes inward from the outer edge of the inner circumference of the stile base 31 that faces indoors.

[0014] (Left vertical frame 11) As shown in FIGS. 3 and 4, the metal profile 40 of the left vertical frame 11 is integrally formed with a left frame base (frame base) 41, a left inner end finding plate portion 42, a left fixing finding plate portion 43, and a left rail protruding portion (rail protruding portion) 44. The left frame base 41 is in the form of a flat plate extending along the prospective direction. The left inner end finding plate portion 42 is in the form of a flat plate extending from the edge portion located on the indoor side of the left frame base 41 toward the outer peripheral side. The left fixing finding plate portion 43 is in the form of a flat plate extending from the left frame base 41 toward the outer peripheral side. In the illustrated example, the left fixing finding plate portion 43 is provided at a portion that is approximately 1 / 3 from the edge portion located on the indoor side of the left frame base 41. The extending length of the left fixing finding plate portion 43 from the left frame base 41 toward the outer peripheral side is set to be larger than that of the left inner end finding plate portion 42. The left rail protruding portion 44 is for constituting the metal rail portion of the outer vertical rail 11A corresponding to the outer sash 20A. After extending from the left frame base 41 toward the inner peripheral side, it extends in the prospective direction toward the indoor side. The extending length of the left rail protruding portion 44 is set such that when the outer sash 20A is disposed at the closed position with respect to the frame body 10, it is located on the inner peripheral side beyond the tight material 36 provided on the vertical stile 22A that is the door end. A left side fitting portion 44a is provided at the extending edge portion extending toward the indoor side in the left rail protruding portion 44. The left side fitting portion 44a is for restricting the movement in the prospective direction in which they move away from each other by fitting with the left side fitting portion 52a of the resin profile 50 described later. In the illustrated example, after extending from the extending edge portion located on the indoor side of the left rail protruding portion 44 toward the outer peripheral side, it bends toward the indoor side and further bends toward the inner peripheral side, thereby constituting the left side fitting portion 44a of the left rail protruding portion 44. The position where the left rail protruding portion 44 is provided is approximately 1 / 4 from the edge portion located on the outdoor side of the left frame base 41.

[0015] The metal profile 40 of the left vertical frame 11 is provided with multiple mounting left vertical claws 45 on the inner circumference side of the left frame base 41. The mounting left vertical claws 45 are for maintaining the state in which the resin profile 50, described later, is attached to the inner circumference side of the left frame base 41. In the illustrated example, mounting left vertical claws 45 are provided on the edge on the indoor side of the left frame base 41 and on the outer circumference side of the left rail projection 44, as well as on a portion approximately midway between the edge on the indoor side of the left frame base 41 and the left rail projection 44.

[0016] The resin profile 50 of the left vertical frame 11 comprises a left vertical resin molded body (vertical resin molded body) 50A and an inner circumferential cover body (fifth vertical cover member) 50B, which are molded separately from each other. These left vertical resin molded body 50A and inner circumferential cover body 50B each have a length that extends over the entire length of the portion of the left vertical frame 11 located between the upper frame 13 and the lower frame 14. Although not explicitly shown in the figure, the left vertical resin molded body 50A and inner circumferential cover body 50B are configured to exhibit the same hue as the vertical frame 22A of the outer sash 20A. However, it is not necessarily required that the left vertical resin molded body 50A and inner circumferential cover body 50B exhibit the same hue as the vertical frame 22A of the outer sash 20A.

[0017] The left vertical resin molded body 50A is formed by integrally molding the left cover base (second vertical cover portion) 51, the left rail cover portion (first vertical cover portion) 52, the left visible cover portion (third vertical cover portion) 53, and the left frame cover portion (fourth vertical cover portion) 54. The left cover base portion 51 is plate-shaped and covers the portion of the metal profile 40 that is on the interior side of the inner circumference side, beyond the left rail projection portion 44. The middle portion of the left cover base portion 51 is provided with a base-shaped portion 51a, a hollow portion 51b, and a hook portion 51c. The base-shaped portion 51a protrudes inward so as to form a space between it and the metal profile 40. The hollow portion 51b is a cylindrical shape with a roughly square cross-section provided in the portion on the interior side of the base-shaped portion 51a, and is configured so that the visible surface facing the outside is at approximately the midpoint of the left frame base portion 41. The hollow portion 51b is provided with engaging projections 51d on the outer surface facing the outdoors and on the inner circumference of the inner surface facing the indoors. The hook portion 51c protrudes outward from the base portion 51a and then bends inward, and is positioned to correspond to the mounting left vertical claw portion 45 provided in the middle of the left frame base portion 41. The left cover base portion 51 is detachably attached to the left frame base portion 41 by inserting the outer edge portion facing outdoors between the mounting left vertical claw portion 45 provided on the left rail projection portion 44 and the left frame base portion 41, inserting the inner edge portion facing indoors between the indoor mounting left vertical claw portion 45 and the left frame base portion 41, and further engaging the hook portion 51c with the mounting left vertical claw portion 45 provided in the middle of the left frame base portion 41. The left rail cover portion 52 is intended to constitute the resin rail portion of the outer vertical rail 11A corresponding to the outer sash 20A, and extends inward from the left cover base 51. The edge of the left rail cover portion 52 on the inner side is provided with a left-side fitting portion 52a. The left-side fitting portion 52a extends outward from the extended edge of the left rail cover portion 52 and then bends outward. The left rail cover portion 52 covers the interior-facing surface of the left rail protrusion 44 by fitting the left-side fitting portion 52a to the left-side fitting portion 44a of the left rail protrusion 44, while maintaining a space between the left rail protrusion 44 and the left rail protrusion 44. The left visible cover portion 53 extends inward from the interior-facing edge of the left cover base 51.The left front edge cover portion 54 extends in the prospective direction from the edge on the inner peripheral side of the left finding cover portion 53 toward the indoor side.

[0018] The inner peripheral cover body 50B is integrally formed with a cover plate portion 55, an outer clamping plate portion 56, and an inner clamping plate portion 57. The cover plate portion 55 is in a plate shape extending along the prospective direction, and is formed to have a length corresponding to the dimension from the left finding cover portion 53 to the finding surface facing the outdoor side of the hollow portion 51b. The outer clamping plate portion 56 extends from the edge located on the outdoor side of the cover plate portion 55 toward the outer peripheral side. The inner clamping plate portion 57 clamps the hollow portion 51b between itself and the outer clamping plate portion 56, and extends from the cover plate portion 55 toward the outer peripheral side. Locking protrusions 56a and 57a are provided at portions of the edges located on the outer peripheral side that face each other on the outer clamping plate portion 56 and the inner clamping plate portion 57. Further, an abutting piece portion 57b is provided on the inner clamping plate portion 57 on the portion closer to the inner peripheral side than the locking protrusion 57a and facing the outdoor side. This inner peripheral cover body 50B is attached to the inner peripheral side of the hollow portion 51b by engaging the locking protrusion 56a of the outer clamping plate portion 56 and the locking protrusion 57a of the inner clamping plate portion 57 with the engaging protrusion 51d. When the edge on the outer peripheral side of the outer clamping plate portion 56 is abutted against the stepped portion 51a and the abutting piece portion 57b of the inner clamping plate portion 57 is abutted against the prospective surface on the inner peripheral side of the hollow portion 51b, the prospective surface on the inner peripheral side of the cover plate portion 55 and the prospective surface on the inner peripheral side of the left front edge cover portion 54 are in a state of being located on substantially the same plane. In other words, in the left vertical frame 11 arranged on the door tip side of the outer shutter 20A, the left front edge cover portion 54 and the inner peripheral cover body 50B are arranged so as to be continuous with almost no step.

[0019] (Right vertical frame 12) As shown in Figures 3 and 5, the metal profile 60 of the right vertical frame 12 is integrally molded with the right frame base (frame base) 61, the right inner end facing plate 62, the right fixing facing plate 63, the right rail projection (rail projection) 64, and the door stop plate 65. The right frame base 61 is a flat plate extending along the depth direction, and is configured so that its dimensions along the depth direction are approximately the same as those of the left frame base 41. The right inner end facing plate 62 is a flat plate extending outward from the edge located on the indoor side of the right frame base 61. The right fixing facing plate 63 is a flat plate extending outward from the right frame base 61, and is positioned on approximately the same plane as the left fixing facing plate 43. The projection 64 for the right rail is for forming the metal rail portion of the inner vertical rail 12B corresponding to the inner sash 20B, and extends inward from the right frame base 61. The extended edge of the projection 64 for the right rail that extends inward is provided with a right-side fitting portion 64a. The right-side fitting portion 64a is for restricting movement in the direction of separation from each other by fitting into the right-side fitting portion 72a of the resin profile 70, which will be described later. In the illustrated example, the right-side fitting portion 64a is formed by extending inward from the extended edge of the projection 64 for the right rail and then bending inward. The position where the projection 64 for the right rail is provided is approximately the same as the position of the right fixing face plate portion 63. The door stop plate portion 65 extends inward from the right frame base 61 and is provided at a position approximately midway along the right frame base 61.

[0020] The metal profile 60 of the right vertical frame 12 is provided with multiple mounting right vertical claws 66 on the inner circumference side of the right frame base 61. The mounting right vertical claws 66 are for maintaining the state in which the resin profile 70, described later, is attached to the inner circumference side of the right frame base 61. In the illustrated example, the mounting right vertical claws 66 are provided on the edge on the indoor side of the right frame base 61 and on the outer circumference side of the projection 64 for the right rail.

[0021] The resin profile (vertical resin molded body) 70 of the right vertical frame 12 has a length that extends along the entire length of the portion located between the upper frame 13 and the lower frame 14 of the right vertical frame 12, and is configured to exhibit the same hue as the vertical frame 22A of the outer sash 20A. This resin profile 70 of the right vertical frame 12 is constructed by integrally molding the right cover base (second vertical cover portion) 71, the right rail cover portion (first vertical cover portion) 72, the right visible cover portion (third vertical cover portion) 73, and the right frame cover portion (fourth vertical cover portion) 74. The right cover base portion 71 is a flat plate that covers the portion of the metal profile 60 that is on the interior side of the inner circumference side, beyond the projection portion 64 for the right rail. The right cover base 71 is detachably attached to the right frame base 61 by inserting its outer edge between the right vertical claw portion 66 provided on the right rail projection 64 and the right frame base 61, and inserting its inner edge between the right vertical claw portion 66 on the indoor side and the right frame base 61. The right rail cover portion 72 is for forming the resin rail portion of the inner vertical rail 12B corresponding to the inner sash 20B, and extends inward from the right cover base 71 before extending outward. The inner edge of the right rail cover portion 72 is provided with a right-side fitting portion 72a. The right-side fitting portion 72a is bent outward from the extended edge of the right rail cover portion 72. The right rail cover portion 72 covers the interior-facing surface of the right rail protrusion 64 by fitting its right-side fitting portion 72a to the right-side fitting portion 64a of the right rail protrusion 64, while maintaining a space between the right rail protrusion 64 and the cover portion 72. The right exterior cover portion 73 extends inward from the interior-facing edge of the right cover base portion 71. The right frame cover portion 74 extends inward in the depth direction from the interior-facing edge of the right exterior cover portion 73. However, the resin profile 70 of the right vertical frame 12 does not necessarily have to be the same hue as the vertical frame 22A of the outer sash 20A.

[0022] (Top frame 13) As shown in Figures 2 and 6, the metal profile 80 of the upper frame 13 is composed of an inner upper metal molded body 80A on the indoor side and an outer upper metal molded body 80B on the outdoor side. These inner upper metal molded body 80A and outer upper metal molded body 80B are connected to each other by a bridge material 80C formed from insulating material, and are thermally isolated from each other without contact.

[0023] The inner upper metal molded body 80A is formed by integrally molding an upper inner viewing plate portion (second upper metal portion) 81, an upper inner visible plate portion (first upper metal portion) 82, and an upper inner pocket portion 83. The upper inner viewing plate portion 81 is plate-shaped and extends along the viewing direction. The upper inner visible plate portion 82 constitutes the metal rail portion of the inner upper horizontal rail 13B for guiding the inner sash 20B, and has a metal rail base portion 82a that extends inward from the outer edge of the upper inner viewing plate portion 81, and an inclined extended portion 82b, a visible extended portion 82c, a viewing extended portion 82d, and a viewing protrusion portion (intermediate engaging portion) 82e provided on the inner circumferential side of the metal rail base portion 82a. The extended length of the metal rail base portion 82a is set so that, when the inner sash 20B is installed in the frame 10, it is on the outer periphery side of the contact position of the tight material 36 provided on the upper frame 23B. The inclined extended portion 82b is inclined so that it gradually moves outward toward the interior side. The edge of the extension portion 82d located on the indoor side extends to a position that is an extension of the metal rail base portion 82a, while the edge of the projection portion 82e located on the indoor side extends to a position that protrudes slightly more inward than the extension portion 82d. The visible extension portion 82c and the extension portion 82d are provided with abutment projections 82f. The abutment projections 82f are protruding portions provided on the visible surface of the visible extension portion 82c facing the outdoors and on the inner circumference surface of the extension portion 82d. The upper inner pocket portion 83 is a groove-shaped recess for accommodating the bridge material 80C and is provided to open to the outdoors at the edge of the upper inner projection plate portion 81 that faces the outdoors.

[0024] The inner upper metal molded body 80A is provided with a plurality of engagement receiving parts 81a and 82g on the inner circumference side of the upper inner facing plate portion 81. The engagement receiving parts 81a and 82g are for maintaining the state in which the resin profile 90, described later, is attached to the inner circumference side of the upper inner facing plate portion 81. In the illustrated example, engagement receiving parts 81a and 82g are provided on the edge portion located on the indoor side of the upper inner facing plate portion 81 and on the outer circumference side of the metal rail base portion 82a of the upper inner facing plate portion 82, respectively.

[0025] The outer upper metal molded body 80B is formed by integrally molding the upper outer facing plate portion (fourth upper metal portion) 84, the upper outer visible plate portion (third upper metal portion) 85, the upper outer pocket portion 86, the upper fixing visible plate portion 87, and the upper outer cover plate portion 88. The upper outer facing plate portion 84 is a plate shape that extends along the facing direction. The upper outer visible plate portion 85 constitutes the metal rail portion of the outer upper horizontal rail 13A for guiding the outer sash 20A, and extends from the outer edge of the upper outer facing plate portion 84 toward the inner circumference, and then extends toward the indoor side. An upper fitting portion 85a is provided on the extended edge of the upper outer visible plate portion 85 that extends toward the indoor side. The upper fitting portion 85a is designed to restrict movement in the direction of separation from each other by fitting into the upper fitting portion 97a of the resin profile 90, which will be described later. In the illustrated example, the upper fitting portion 85a is formed by extending outward from the extended edge of the upper outer facing plate portion 85, bending inward, and then bending inward. The upper outer pocket portion 86 is a groove-shaped recess for accommodating the bridge material 80C, and is provided to open into the room at the edge of the upper outer facing plate portion 84 that is on the room side. The upper fixing facing plate portion 87 is a flat plate that extends outward from the upper outer pocket portion 86. The upper outer cover plate portion 88 extends inward from the edge of the upper outer facing plate portion 84 that is on the room side.

[0026] The outer upper metal molded body 80B is provided with a plurality of upper engagement receiving portions 84a on the inner circumference side of the upper outer facing plate portion 84, and a plurality of thickened portions 84b in the portions between the upper engagement receiving portions 84a. The upper engagement receiving portions 84a are for maintaining the state in which the resin profile 90, described later, is attached to the inner circumference side of the upper outer facing plate portion 84. In the illustrated example, upper engagement receiving portions 84a are provided on the portion of the upper outer pocket portion 86 facing the outside, and on the facing surface of the upper outer facing plate portion 84, on the portion that is on the indoor side of the upper outer visible plate portion 85. The thickened portions 84b are constructed by partially increasing the plate thickness of the upper outer facing plate portion 84, and are provided along the longitudinal side of the upper frame 13.

[0027] The resin profile 90 of the upper frame 13 is composed of an inner upper resin molded body 90A on the indoor side and an outer upper resin molded body 90B on the outdoor side. These inner upper resin molded bodies 90A and outer upper resin molded bodies 90B each have a length that extends over the entire length of the portion located between the left and right vertical frames 11 and 12 on the upper frame 13. Although not explicitly shown in the figure, the inner upper resin molded body 90A and outer upper resin molded body 90B are configured to exhibit the same hue as the vertical frame 22A of the outer sash 20A. However, the inner upper resin molded body 90A and outer upper resin molded body 90B do not necessarily have to exhibit the same hue as the vertical frame 22A of the outer sash 20A.

[0028] The inner upper resin molded body 90A is formed by integrally molding the upper inner cover base (second upper cover portion) 91, the upper inner rail cover portion (first upper cover portion) 92, the upper visible cover portion (third upper cover portion) 93, the upper frame cover portion (fourth upper cover portion) 94, and the extension cover portion 95. The upper inner cover base portion 91 is a flat plate that covers the upper inner visible plate portion 81 of the metal profile 80. This upper inner cover base portion 91 is detachably attached to the inner upper metal molded body 80A by inserting the outer edge portion between the upper engagement receiving portion 84a provided on the metal rail base portion 82a and the upper inner visible plate portion 81, and inserting the inner edge portion between the upper engagement receiving portion 84a on the indoor side and the upper inner visible plate portion 81. The upper inner rail cover portion 92, together with the outer cover portion (7th upper cover portion) 98, the inner circumference cover portion (8th upper cover portion) 99, and the inner cover portion (1st upper cover portion) 100 of the outer upper resin molded body 90B described later, constitutes the resin rail portion of the upper horizontal rail 13B corresponding to the inner sash 20B, and extends inward from the upper inner cover base portion 91. The inner circumference edge of the upper inner rail cover portion 92 is configured to be approximately the same as the metal rail base portion 82a of the upper inner facing plate portion 82 when the upper inner cover base portion 91 is brought into contact with the upper inner facing plate portion 81. The outer circumference portion of the upper inner rail cover portion 92 is provided with an engagement projection 92a for engaging with the engagement receiving portion 82g. The upper visible cover portion 93 extends inward from the indoor-facing edge of the upper inner cover base portion 91. The outer-circumferential portion of the upper visible cover portion 93 is provided with an engaging projection 93a for engaging with the engaging receiving portion 81a. The upper frame cover portion 94 extends inward in the depth direction from the inner-circumferential edge of the upper visible cover portion 93. The extension cover portion 95 extends inward from the outdoor-facing edge of the upper frame cover portion 94. The extended edge of the extension cover portion 95 extends to a position further inward than the inner-circumferential edge of the upper inner rail cover portion 92.

[0029] The outer upper resin molded body 90B is formed by integrally molding the upper outer cover base (sixth upper cover portion) 96, the inner cover portion for the upper outer rail (fifth upper cover portion) 97, the outer cover portion for the upper inner rail 98, the inner circumference cover portion for the upper inner rail 99, and the inner cover portion for the upper inner rail 100. The upper outer cover base 96 is a flat plate that covers the upper outer facing plate portion 84 of the metal profile 80. The inner cover portion for the upper outer rail 97 is for forming the resin rail portion of the upper horizontal rail 13A corresponding to the outer sash 20A, and extends inward from the edge located on the outdoor side of the upper outer cover base 96. An upper fitting portion 97a is provided on the inner circumference edge of the inner cover portion for the upper outer rail 97. The upper fitting portion 97a extends outward from the extended edge of the inner cover portion 97 for the upper outer rail, and then bends outward. The inner cover portion 97 for the upper outer rail covers the interior-facing surface of the upper outer facing plate portion 85 by fitting the upper fitting portion 97a to the upper fitting portion 85a of the upper outer facing plate portion 85, while maintaining a space between the upper outer facing plate portion 85 and the inner cover portion 97a. The outer cover portion 98 for the upper inner rail, the inner circumference cover portion 99 for the upper inner rail, and the inner cover portion 100 for the upper inner rail, together with the upper inner rail cover portion 92 of the inner upper resin molded body 90A, constitute the resin rail portion of the upper horizontal rail 13B corresponding to the inner sash 20B. The outer cover portion 98 for the upper inner rail extends inward from the edge located on the indoor side of the upper outer cover base portion 96, thereby covering the exterior-facing surfaces of the metal rail base portion 82a, the inclined extension portion 82b, and the visible extension portion 82c in the upper inner visible plate portion 82. The inner circumferential cover portion 99 for the upper inner rail extends inward from the extended edge of the outer cover portion 98 for the upper inner rail, thereby covering the visible surface on the interior side of the visible extension portion 82d. The inner cover portion 100 for the upper inner rail extends outward from the extended edge of the inner circumferential cover portion 99 for the upper inner rail, thereby covering the visible surface of the portion of the upper inner visible plate portion 82 that is located on the interior side of the metal rail base portion 82a. The extension length of the inner cover portion 100 for the upper inner rail is set so that when the inner sash 20B is installed on the frame 10, the tight material 36 provided on the upper frame 23B does not come into contact with the upper inner rail cover portion 92 or the joint 101 with the upper inner rail cover portion 92.As is clear from the figure, the outer cover portion 98 for the upper inner rail, the inner circumferential cover portion 99 for the upper inner rail, and the inner cover portion 100 for the upper inner rail form a recess 102 that opens on the outer circumference, and the inclined extended portion 82b, the visible extended portion 82c, the projected extended portion 82d, and the projected projection portion 82e of the upper inner facing plate portion 82 are housed inside. The inner cover portion 100 for the upper inner rail is provided with an intermediate engaging portion 100a. The intermediate engaging portion 100a engages with the outer circumference side of the projected projection portion 82e, thereby restricting the movement of the inner circumferential cover portion 99 for the upper inner rail toward the inner circumference relative to the upper inner facing plate portion 82.

[0030] The outer upper resin molded body 90B is provided with a plurality of engaging protrusions 96a and support protrusions 96b on the outer peripheral side of the upper outer cover base 96, and the inner cover portion 97 for the upper outer rail and the outer cover portion 98 for the upper inner rail are provided with mounting protrusions 97b and 98a, respectively. The engaging protrusions 96a extend outward from the upper outer cover base 96 and have engaging claw portions 96c at their extended edges. The engaging claw portions 96c engage with the upper engaging receiving portion 84a provided on the outer upper metal molded body 80B, thereby maintaining the upper outer cover base 96 in a state where it covers the inner peripheral surface of the upper outer peripheral plate portion 84 while securing a space between it and the upper outer peripheral plate portion 84. The support protrusions 96b extend outward from the upper outer cover base 96 between the engaging protrusions 96a. The dimensions of the support projection 96b are set such that when the engaging claw portion 96c of the engaging projection 96a engages with the upper engaging receiving portion 84a, the extended edge is positioned close to the upper outer facing plate portion 84 between the thickened portions 84b provided on the upper outer facing plate portion 84. The mounting projections 97b and 98a protrude toward each other from the outer circumference of the inner cover portion 97 for the upper outer rail and the outer cover portion 98 for the upper inner rail. These mounting projections 97b and 98a engage with the upper windbreak member 110A when it is installed between the inner cover portion 97 for the upper outer rail and the outer cover portion 98 for the upper inner rail, thereby preventing the upper windbreak member 110A from falling off. The upper windbreak member 110A is molded from an elastic resin material and is installed on the inner circumference of the upper frame 13 in the portion corresponding to the meeting stiles 25A and 25B, thereby restricting the flow of air between the inside and outside of the room.

[0031] (Bottom frame 14) As shown in Figures 2, 7 to 10, the metal profile 120 of the lower frame 14 is composed of an inner lower metal molded body 120A on the indoor side and an outer lower metal molded body 120B on the outdoor side. These inner lower metal molded bodies 120A and outer lower metal molded bodies 120B are connected to each other by a bridge material (insulating material) 120C formed from insulating material, and are thermally insulated so that they do not come into contact with each other.

[0032] The inner lower metal molded body 120A is formed by integrally molding the lower inner depth plate portion (second lower metal portion) 121, the lower inner face plate portion (first lower metal portion) 122, the lower inner pocket portion 123, the lower inner end face plate portion (third lower metal portion) 124, and the lower support plate portion 125. The lower inner depth plate portion 121 is a plate shape that extends along the depth direction. The lower inner face plate portion 122 constitutes the metal rail portion of the inner lower horizontal rail 14B for guiding the inner sash 20B, and extends inward from the outer edge of the lower inner depth plate portion 121, and then extends outward. The extended edge of the lower inner face plate portion 122 that extends inward is provided with a door roller guide portion 122a and a lower fitting portion 122b. The roller guide portion 122a is a protruding portion that extends inward and guides the sliding of the inner sash 20B via the roller 26B. The lower fitting portion 122b is designed to restrict movement in the depth direction away from each other by fitting into the lower fitting portion 142a of the resin profile 140, which will be described later. In the illustrated example, the lower fitting portion 122b is formed by extending outward from the extended edge located on the indoor side of the lower inner facing plate portion 122, bending inward, and then bending inward again. The lower inner pocket portion 123 is a groove-shaped recess for accommodating the bridge material 120C and is provided to open to the outside at the edge on the outdoor side of the lower inner facing plate portion 121. The lower inner end facing plate portion 124 extends along the depth direction from the edge on the indoor side of the lower inner facing plate portion 121. A lower fixing plate portion 126 is provided on the outer periphery side of the lower inner end facing plate portion 124, which is inclined to gradually become more outward toward the interior. The lower support plate portion 125 extends outward from the intermediate portion between the lower inner pocket portion 123 and the lower inner end facing plate portion 124 in the lower inner facing plate portion 121. The lower inner end facing plate portion 124, the lower fixing plate portion 126, and the lower support plate portion 125 are configured to be located on the same plane, with their respective outer edges being substantially horizontal along the facing direction.

[0033] The inner lower metal molded body 120A is provided with a plurality of lower engagement receiving portions 121a on the inner circumference side of the lower inner facing plate portion 121. The lower engagement receiving portions 121a are for maintaining the state in which the resin profile 140, described later, is attached to the inner circumference side of the lower inner facing plate portion 121. In the illustrated example, the lower engagement receiving portions 121a are provided on the facing surface of the lower inner end facing plate portion 124 that faces the outside, and on the facing surface of the lower inner facing plate portion 121, on the portion facing the lower fitting portion 122b.

[0034] The outer lower metal molded body 120B is formed by integrally molding the lower outer viewing plate portion (fifth lower metal portion) 127, the lower outer facing plate portion (fourth lower metal portion) 128, the lower outer pocket portion 129, and the lower outer cover plate portion 130. The lower outer viewing plate portion 127 is a plate shape that extends along the viewing direction. In the illustrated outer lower metal molded body 120B, a hollow portion 131 is formed in the outer peripheral portion of the lower outer viewing plate portion 127. The lower outer facing plate portion 128 constitutes the metal rail portion of the outer lower horizontal rail 14A for guiding the outer sash 20A, and extends from the outer edge of the lower outer viewing plate portion 127 toward the inner circumference, and then extends toward the indoor side. The extended edge of the lower outer facing plate portion 128 that extends inward is provided with a roller guide portion 128a and a lower fitting portion 128b. The roller guide portion 128a is a protruding portion that projects inward and guides the sliding of the outer sash 20A via the roller 26A. The lower fitting portion 128b is designed to restrict movement in the direction of separation from each other by fitting into the lower fitting portion 146a of the resin profile 140, which will be described later. In the illustrated example, the lower fitting portion 128b is formed by extending outward from the extended edge of the lower outer facing plate portion 128, bending inward, and then bending inward. The edge located on the inner side of the lower outer facing plate portion 128 is configured to be approximately the same as that of the lower inner facing plate portion 122. The lower outer pocket portion 129 is a groove-shaped recess for accommodating the bridge material 120C, and is provided to open into the room at the indoor-facing edge of the lower outer facing plate portion 127. The lower outer cover plate portion 130 extends inward from the outdoor-facing edge of the lower outer facing plate portion 127.

[0035] The outer lower metal molded body 120B is provided with a plurality of lower engagement receiving portions 127a on the inner circumference side of the lower outer facing plate portion 127. The lower engagement receiving portions 127a are for maintaining the state in which the resin profile 140, described later, is attached to the inner circumference side of the lower outer facing plate portion 127. In the illustrated example, the lower engagement receiving portions 127a are provided on the portion of the lower outer pocket portion 129 facing the outside, and on the facing surface of the lower outer facing plate portion 127, on the portion facing the lower fitting portion 128b.

[0036] As shown in Figures 8 and 9, a lower windbreak member 110B is attached to the metal profile 120 of the lower frame 14 described above, between the lower inner facing plate portion 122 of the inner lower metal molded body 120A and the lower outer facing plate portion 128 of the outer lower metal molded body 120B. The lower windbreak member 110B is molded from an elastic resin material and is installed on the inner circumferential surface of the lower frame 14 in the portion corresponding to the meeting stiles 25A and 25B, in order to restrict the flow of air between the inside and outside.

[0037] The resin profile 140 of the lower frame 14 is composed of an inner lower resin molded body 140A on the indoor side and an outer lower resin molded body 140B on the outdoor side. Of these, the inner lower resin molded body 140A is configured to have a length that extends over the entire length of the portion located between the left and right vertical frames 11 and 12 in the lower frame 14. In contrast, the outer lower resin molded body 140B is configured to have a length that extends over the entire length of the portion located between the left vertical frame 11 and the lower windbreak member 110B in the lower frame 14. Although not explicitly shown in the figure, the inner lower resin molded body 140A and the outer lower resin molded body 140B are configured to exhibit the same hue as the vertical frame 22A of the outer sash 20A. However, the inner lower resin molded body 140A and the outer lower resin molded body 140B do not necessarily have to exhibit the same hue as the vertical frame 22A of the outer sash 20A.

[0038] The inner lower resin molded body 140A is formed by integrally molding the lower inner cover base (second lower cover portion) 141, the lower inner rail cover portion (first lower cover portion) 142, the lower visible cover portion (third lower cover portion) 143, and the lower frame cover portion (fourth lower cover portion) 144. The lower inner cover base portion 141 is a flat plate that covers the lower inner visible plate portion 121 of the metal profile 120. The lower inner rail cover portion 142 is for forming the resin rail portion of the lower horizontal rail 14B corresponding to the inner sash 20B, and extends inward from the lower inner cover base portion 141. A lower fitting portion 142a is provided on the inner edge of the lower inner rail cover portion 142. The lower fitting portion 142a extends outward from the extended edge of the lower inner rail cover portion 142, and then bends outward. The lower inner rail cover portion 142 covers the interior-facing surface of the lower inner surface plate portion 122 by fitting the lower fitting portion 142a of the lower inner surface plate portion 122 to the lower fitting portion 122b of the lower inner surface plate portion 122, while maintaining a space between the lower inner surface plate portion 122 and the lower inner surface plate portion 122. The lower surface cover portion 143 extends inward from the interior-facing edge of the lower inner cover base portion 141, thereby covering the exterior-facing surface of the lower inner end surface plate portion 124. The lower frame cover portion 144 extends inward in the depth direction from the interior-facing edge of the lower surface cover portion 143.

[0039] The inner lower resin molded body 140A is provided with a plurality of engaging protrusions 141a on the outer circumferential side of the lower inner cover base 141. The engaging protrusions 141a extend outward from the lower inner cover base 141, and engaging claws 141b are provided on the extended edges. The engaging claws 141b engage with the lower engaging receiving portion 121a provided on the inner lower metal molded body 120A, thereby maintaining a space between the lower inner cover base 141 and the lower inner facing plate portion 121, and covering the inner circumferential surface of the lower inner facing plate portion 121.

[0040] The outer lower resin molded body 140B is formed by integrally molding the lower outer cover base (sixth lower cover portion) 145 and the lower outer rail cover portion (fifth lower cover portion) 146. The lower outer cover base 145 is a flat plate that covers the lower outer facing plate portion 127 and the bridge material 120C of the metal profile 120. A small gap is maintained between the edge of the lower outer cover base 145 located on the indoor side and the facing surface of the lower inner facing plate portion 122 facing the outdoors. The lower outer rail cover portion 146 is for forming the resin rail portion of the lower horizontal rail 14A corresponding to the outer sash 20A, and extends inward from the edge of the lower outer cover base 145 located on the outdoor side. A lower fitting portion 146a is provided on the edge of the lower outer rail cover portion 146 that is on the inner side. The lower fitting portion 146a extends outward from the extended edge of the lower outer rail cover portion 146, and then bends outward. The lower outer rail cover portion 146 covers the interior-facing surface of the lower outer rail cover portion 128 by fitting the lower fitting portion 146a 146a into the lower fitting portion 128b of the lower outer facing plate portion 128, while maintaining a space between the lower outer facing plate portion 128 and the lower outer facing plate portion 128.

[0041] The outer lower resin molded body 140B is provided with a plurality of engaging protrusions 145a on the outer circumference side of the lower outer cover base 145. The engaging protrusions 145a extend outward from the lower outer cover base 145, and engaging claws 145b are provided on the extended edges. The engaging claws 145b engage with the lower engaging receiving portion 127a provided on the outer lower metal molded body 120B, thereby maintaining a space between the lower outer cover base 145 and the lower outer visible plate portion 127, and covering the visible surface on the inner circumference side of the lower outer visible plate portion 127.

[0042] In the metal profile 120 of the lower frame 14, an outer lower metal cover body 150 is provided in the portion located between the lower windbreak member 110B and the right vertical frame 12, having substantially the same cross-sectional shape as the outer lower resin molded body 140B. That is, the outer lower metal cover body 150 is integrally molded with a lower outer cover base 151, a lower outer rail cover portion 152, a lower fitting portion 152a, and an engaging projection 151a. However, the lower outer cover base 151 of the outer lower metal cover body 150 is configured to be slightly shorter in dimension than the lower outer cover base 145 of the outer lower resin molded body 140B.

[0043] In the joinery configured as described above, the lower frame 14 is made of metal profiles 120 and resin profiles 140, which is advantageous in terms of thermal insulation and eliminates the risk of problems such as condensation. Moreover, the metal profiles 120 of the lower frame 14 are made by interposing a bridge material 120C between the interior lower metal molded body 120A on the interior side and the exterior lower metal molded body 120B on the exterior side. Furthermore, both the interior lower horizontal rail 14A and the exterior lower horizontal rail 14B are made of metal rail sections, namely the lower interior facing plate section 122 and the lower exterior facing plate section 128, and resin rail sections, namely the lower interior rail cover section 142 and the lower exterior rail cover section 146. Spaces are also secured between the lower interior facing plate section 122 and the lower interior rail cover section 142, and between the lower exterior facing plate section 128 and the lower exterior rail cover section 146. Therefore, it is even more advantageous in terms of thermal insulation.

[0044] In addition, with the above-described joinery, the lower inner facing plate portion 122 and the lower inner rail cover portion 142 are fitted together by the lower fitting portions 122b and 142a, and the lower outer facing plate portion 128 and the lower outer rail cover portion 146 are fitted together by the lower fitting portions 128b and 146a, thereby restricting movement in the direction away from each other. Consequently, molding errors and thermal deformation of the lower inner rail cover portion 142 and the lower outer rail cover portion 146 are suppressed by the lower inner facing plate portion 122 and the lower outer facing plate portion 128. As a result, the tight material 36 provided on the sliding doors 20A and 20B can be uniformly brought into contact with the lower horizontal rails 14A and 14B along their entire length, ensuring the sliding operation of the sliding doors 20A and 20B, and providing advantages in terms of watertightness and airtightness. In particular, the joints between the lower inner facing plate portion 122 and the lower inner rail cover portion 142, and between the lower outer facing plate portion 128 and the lower outer rail cover portion 146, are joined to each other in such a way that the joints are exposed on the inner surface of the lower horizontal rails 14A and 14B. As a result, the sliding doors 20A and 20B do not slide while the sealing material 36 is in contact with these joints, which is advantageous in terms of watertightness and airtightness.

[0045] Furthermore, the lower fitting portion 122b of the lower inner facing plate portion 122 and the lower fitting portion 142a of the lower inner rail cover portion 142 are arranged side by side in the depth direction, and the tight material 36 is configured to contact the lower inner facing plate portion 122 and the lower inner rail cover portion 142 so as to sandwich the portions of the lower fitting portions 122b and 142a that are arranged side by side. Since the influence of molding errors and thermal deformation of the lower inner rail cover portion 142 is reduced in the portions of the lower fitting portions 122b and 142a that are arranged side by side, watertightness and airtightness by the tight material 36 can be more reliably ensured. Similarly, the lower fitting portion 128b of the lower outer facing plate portion 128 and the lower fitting portion 146a of the lower outer rail cover portion 146 are arranged side by side in the depth direction when fitted together, and the sealing material 36 is configured to contact the lower outer facing plate portion 128 and the lower outer rail cover portion 146 so as to sandwich the adjacent portions of the lower fitting portions 128b and 146a. Since the influence of molding errors and thermal deformation of the lower outer rail cover portion 146 is reduced for the adjacent portions of the lower fitting portions 128b and 146a, watertightness and airtightness by the sealing material 36 can be more reliably ensured.

[0046] Furthermore, the lower frame 14 is made of a resin profile 140 which includes an inner lower resin molded body 140A in which the lower inner rail cover portion 142 to the lower frame cover portion 144 is integrally molded, and an outer lower resin molded body 140B in which the lower outer cover base portion 145 to the lower outer rail cover portion 146 is integrally molded. As a result, each can be treated as a single component, which has advantages such as making the assembly of the lower frame 14 easier. The outer lower resin molded body 140B is installed only between the lower windbreak member 110B and the left vertical frame 11 on the indoor side of the outer sash 20A when it is in the closed position. Therefore, when the outer sash 20A is closed, the outer lower resin molded body 140B is not exposed to the outside, making it possible to improve heat insulation while preventing the effects of direct sunlight.

[0047] The left and right vertical frames 11, 12 and the upper frame 13 are also constructed from metal profiles 40, 60, 80 and resin profiles 50, 70, 90, respectively, which is advantageous in terms of thermal insulation. In addition, when viewed from the interior side, the metal profile 120 of the lower frame 14, the metal profiles 40, 60 of the vertical frames 11, 12, and the metal profile 80 of the upper frame 13 are all covered with resin profiles 140, 50, 70, 90, and these resin profiles 140, 50, 70, 90 are configured to exhibit the same hue as the frames 22A, 22B, 23A, 23B, 24A, 24B, 25A, 25B of the sashes 20A, 20B. Therefore, it is advantageous in terms of appearance quality when viewed from the interior side.

[0048] Furthermore, the resin profile 90 of the upper frame 13 is molded as an integrated outer upper resin molded body 90B from the inner cover portion 97 for the upper outer rail to the inner cover portion 100 for the upper inner rail. As a result, there is no joint between the inner upper resin molded body 90A and the outer upper resin molded body 90B between the outer upper horizontal rail 13A and the inner upper horizontal rail 13B. This ensures airtightness when the upper windbreak member 110A is installed, and there is no concern that outside air or water from outside will enter the room through the joint between the inner upper resin molded body 90A and the outer upper resin molded body 90B. In this case, the inner cover portion 97 for the upper outer rail and the upper outer facing plate portion 85 are fitted together by the upper fitting portions 97a and 85a, and the intermediate engaging portion 100a of the inner cover portion 100 for the upper inner rail is engaged with the projecting portion 82e of the upper inner facing plate portion 82, thus restricting movement in the direction away from each other. Consequently, in the upper horizontal rails 13A and 13B of the upper frame 13, molding errors and thermal deformation of the inner cover portion 97 for the upper outer rail, the outer cover portion 98 for the upper inner rail, the inner circumference cover portion 99 for the upper inner rail, and the inner cover portion 100 for the upper inner rail are suppressed by the upper inner facing plate portion 82 and the upper outer facing plate portion 85.

[0049] Similarly, in the left vertical frame 11, the left rail projection 44 and the left rail cover 52 are fitted together by the lateral fitting portions 44a and 52a, and in the right vertical frame 12, the right rail projection 64 and the right rail cover 72 are fitted together by the lateral fitting portions 64a and 72a, thereby restricting their movement in the direction away from each other. Consequently, molding errors and thermal deformation of the left rail cover 52 and the right rail cover 72 in the outer vertical rail 11A and inner vertical rail 12B of the vertical frames 11 and 12 are suppressed by the left rail projection 44 and the right rail projection 64. Furthermore, when the inner circumference cover 50B is installed, the expected surface on the inner circumference side of the left vertical frame 11 becomes almost flat, which is advantageous in terms of appearance quality.

[0050] In the above-described embodiment, a sliding window in which both the outer sash 20A and the inner sash 20B slide relative to the frame 10 is illustrated, but it is also possible to configure it as a single-sliding window in which only one sash slides. Furthermore, while the illustration illustrates a window with frames 22A, 22B, 23A, 23B, 24A, 24B, 25A, 25B molded from resin as the sashes 20A, 20B, it is not necessarily limited to this, and for example, the sash may have a frame molded from a metal such as an aluminum alloy for the exterior side and from a resin for the interior side. In addition, in the illustrated example, a mohair-like material is illustrated as the sealing material 36, but a sealing material molded from an elastic material such as rubber may be used, or the sealing material may be made from a soft fin-shaped member molded integrally with the frame. Furthermore, the example shows a lower frame 14 comprising an inner lower metal molded body 120A and an outer lower metal molded body 120B connected by a bridge member 120C as the metal profile 120, and an upper frame 13 comprising an inner upper metal molded body 80A and an outer upper metal molded body 80B connected by bridge members 80C, respectively. However, these may also be integrally molded from metal.

[0051] Furthermore, in the above-described embodiment, the left vertical resin molded body 50A and the inner circumferential cover body 50B are molded separately. However, even if they are molded as a single unit, it is possible to improve the appearance quality by configuring the visible surface on the inner circumferential side of the left vertical frame 11 to be almost flat. That is, if the left visible cover portion (third vertical cover portion) 53 is formed in the left vertical resin molded body 50A in the portion corresponding to the outer clamping plate portion 56 of the inner circumferential cover body 50B, and the left frame cover portion (fourth vertical cover portion) 54 is configured to be flat from the portion located on the inner circumferential side, it is possible to improve the appearance quality while reducing the number of parts.

[0052] As described above, the joinery according to the present invention comprises a frame body in which left and right vertical frames, an upper frame, and a lower frame are assembled on all four sides, and a sliding screen disposed on the frame body in a state that it slides in the extending direction of the lower frame, wherein the lower frame comprises a metal profile formed from metal and a resin profile formed from resin, and the horizontal rail that guides the sliding of the sliding screen is composed of a metal rail portion provided on the metal profile and a resin rail portion provided on the resin profile, and the metal rail portion and the resin rail portion are provided with a lower fitting portion that restricts movement in a direction away from each other by fitting together. According to this invention, the metal rail section and the resin rail section are fitted together by the lower fitting section, restricting their movement in the direction away from each other. Therefore, molding errors and thermal deformation of the resin rail section are suppressed by the metal rail section. As a result, the sealing material provided on the shoji screen can be uniformly brought into contact with the horizontal rail along its entire length on the lower frame, making it possible to improve heat insulation while ensuring watertightness and airtightness. Furthermore, since it is possible to prevent the sealing material from coming into excessive contact with the horizontal rail, there is no risk of problems such as the shoji screen becoming heavy to open and close.

[0053] Furthermore, the present invention is characterized in that, in the above-described joinery, the metal rail portion and the resin rail portion are joined to each other such that the joint is exposed on the surface located on the inner circumference side of the horizontal rail, and the shoji screen is provided with a tight material that abuts against the surface along the visible direction of the horizontal rail. According to this invention, the sealing material does not come into contact with the joint between the metal rail section and the resin rail section, thereby ensuring watertightness and airtightness.

[0054] Furthermore, the present invention is characterized in that, in the above-described joinery, the lower fitting portion of the metal rail portion and the lower fitting portion of the resin rail portion are arranged side by side in the depth direction when fitted together, and the tight material abuts the metal rail portion and the resin rail portion so as to sandwich the portions of the lower fitting portions that are arranged side by side. According to this invention, the effects of molding errors and thermal deformation of the resin rail portion are reduced, especially in the adjacent portions of the lower fitting section, thus ensuring more reliable watertightness and airtightness with the sealing material.

[0055] Furthermore, in the above-described joinery, the present invention provides the lower frame with an inner horizontal rail for guiding the inner sash on the interior side and an outer horizontal rail for guiding the outer sash on the exterior side, and the metal profile of the lower frame has a first lower metal part which constitutes the metal rail portion of the inner horizontal rail and has the lower fitting portion provided on the inner circumference side, a second lower metal part which extends inward from the outer circumference side of the first lower metal part, and a third lower metal part which extends in the facing direction from the edge of the second lower metal part which is on the interior side, and the resin profile of the lower frame has the facing side of the first lower metal part which faces the interior The invention is characterized by comprising an inward-facing resin molded body in which the following are integrally molded: a first lower cover portion which constitutes the resin rail portion of the inner horizontal rail by covering the surface and has the lower fitting portion provided on the inner circumference side; a second lower cover portion which covers the second lower metal portion by extending inward from the outer circumference side of the first lower cover portion; a third lower cover portion which covers the third lower metal portion by extending inward from the inner edge of the second lower cover portion located on the indoor side; and a fourth lower cover portion which extends inward from the extended edge of the third lower cover portion. According to this invention, since the lower frame is made of a resin profile that includes an inward-facing lower resin molded body in which the first lower cover portion to the fourth lower cover portion are integrally molded, the handling of parts becomes easier.

[0056] Furthermore, in the above-described joinery, the present invention provides the lower frame with an inner horizontal rail for guiding the inner sash on the interior side and an outer horizontal rail for guiding the outer sash on the exterior side, and the metal profile of the lower frame has a first lower metal part which constitutes the metal rail portion of the inner horizontal rail and has the lower fitting portion provided on the inner circumference side, a fourth lower metal part which constitutes the metal rail portion of the outer horizontal rail and has the lower fitting portion provided on the inner circumference side, and extending inward from the portion located on the outer circumference side of the fourth lower metal part The lower frame has a fifth lower metal part which is located there and connected to the outer circumference of the first lower metal part, and the resin profile of the lower frame is characterized by comprising an outer lower resin molded body in which a fifth lower cover part is provided on the inner circumference of the resin rail part of the outer horizontal rail which is located there there and covers the visible surface of the fourth lower metal part that faces the interior, and a sixth lower cover part which extends inward from the outer circumference of the fifth lower cover part to cover the fifth lower metal part. According to this invention, since the lower frame is made of a resin profile that includes an outer lower resin molded body in which the fifth lower cover portion and the sixth lower cover portion are integrally molded, the handling of the parts becomes easier.

[0057] Furthermore, the present invention is characterized in that, in the above-described joinery, a windbreak member is attached to the portion of the lower frame located between the inner horizontal rail and the outer horizontal rail, at the midpoint of the longitudinal length, and the outer lower resin molded body is disposed only between the windbreak member and the vertical frame on the indoor side of the outer sash when it is in the closed position. According to this invention, when the shoji screen is closed, the outer lower resin molded body is not exposed to the outside, making it possible to improve heat insulation while preventing the effects of direct sunlight.

[0058] Furthermore, the present invention is characterized in that, in the above-described joinery, a heat insulating material is interposed between the fifth lower metal part and the first lower metal part of the metal profile of the lower frame. According to this invention, since heat transfer between the inside and outside is blocked by the insulating material, it is possible to further improve the insulation performance.

[0059] Furthermore, in the above-described joinery, the present invention comprises a metal profile formed from metal and a resin profile formed from resin, the upper frame is provided with an inner horizontal rail that guides the sliding of the inner sash on the interior side and an outer horizontal rail that guides the sliding of the outer sash on the exterior side, the horizontal rail is composed of a metal rail portion provided on the metal profile and a resin rail portion provided on the resin profile, the metal profile of the upper frame comprises a first upper metal portion that constitutes the metal rail portion of the inner horizontal rail and the first upper metal The upper frame has a second upper metal portion extending inward from the outer periphery of the attached portion, a third upper metal portion that constitutes the metal rail portion of the outer horizontal rail, and a fourth upper metal portion that extends inward from the outer periphery of the third upper metal portion and is connected to the outer periphery of the first upper metal portion, and the resin profile of the upper frame has a first upper cover portion that covers the interior-facing visible surface of the first upper metal portion and constitutes the resin rail portion of the inner horizontal rail, and a portion located on the outer periphery of the first upper cover portion A second upper cover portion that extends inward toward the interior and covers the second upper metal portion; a third upper cover portion that extends inward toward the inner circumference from the edge of the second upper cover portion located on the interior side; a fourth upper cover portion that extends inward toward the interior from the extended edge of the third upper cover portion; a fifth upper cover portion that covers the interior-facing visible surface of the third upper metal portion and constitutes the resin rail portion of the outer horizontal rail; and a portion that extends inward toward the interior from the outer circumference of the fifth upper cover portion and covers the fourth upper metal portion. The present invention is characterized by having a sixth upper cover portion, a seventh upper cover portion that extends inward from the extended edge of the sixth upper cover portion and covers the visible surface of the first upper metal portion facing the outside, thereby constituting the resin rail portion of the inner horizontal rail, and an eighth upper cover portion that extends inward from the edge located on the inner side of the seventh upper cover portion and covers the surface that becomes the inner side of the first upper metal portion, and is connected to the portion that becomes the inner side of the first upper cover portion, thereby constituting the resin rail portion of the inner horizontal rail. According to this invention, the portion of the upper frame visible from the interior is covered with a resin profile, which is advantageous in terms of appearance quality.

[0060] Furthermore, the present invention is characterized in that, in the above-described joinery, the resin profile of the upper frame comprises an inner upper resin molded body in which the portion from the middle of the first upper cover portion to the fourth upper cover portion is integrally molded, and an outer upper resin molded body in which the portion from the fifth upper cover portion to the middle of the first upper cover portion is integrally molded. According to this invention, since there is no joint in the resin profile between the outer horizontal rail and the inner horizontal rail, airtightness can be ensured when an upper windbreak member is installed, and there is no concern that outside air or water from outside will enter the room through the joint in the resin profile.

[0061] Furthermore, the present invention is characterized in that, in the above-described joinery, an upper fitting portion is provided between the inner circumferential portion of the third upper metal part and the inner circumferential portion of the fifth upper cover part, which fits together, and an intermediate engaging portion is provided between the intermediate portion of the first upper metal part and the intermediate portion of the first upper cover part, which engages with each other. According to this invention, the metal rail portion and the resin rail portion are fitted or engaged with each other by the upper fitting portion and intermediate engaging portion, thereby restricting their movement in the direction away from each other. Consequently, even in the horizontal rails of the upper frame, molding errors and thermal deformation of the resin rail portion are suppressed by the metal rail portion.

[0062] Furthermore, in the above-described joinery, the present invention comprises a vertical frame made of a metal profile and a resin profile made of a resin, and a vertical rail is provided on the vertical frame corresponding to the door edge of the sliding door positioned in the closed position, and the vertical rail is composed of a metal rail portion provided on the metal profile and a resin rail portion provided on the resin profile, and the metal profile of the vertical frame has a frame base portion extending along the depth direction and a rail projection that protrudes inward from the inner circumference side of the frame base portion and constitutes the metal rail portion of the vertical rail The resin profile of the vertical frame comprises a vertical resin molded body in which the following are integrally molded: a first vertical cover portion that constitutes the resin rail portion of the vertical rail by covering the visible surface of the rail projection facing the interior; a second vertical cover portion that covers the frame base by extending inward from the outer circumference of the first vertical cover portion; a third vertical cover portion that extends inward from the edge of the second vertical cover portion located on the interior side; and a fourth vertical cover portion that extends inward from the extended edge of the third vertical cover portion. According to this invention, the portion of the vertical frame visible from the interior is covered with a resin profile, which is advantageous in terms of appearance quality.

[0063] Furthermore, the present invention is characterized in that, in the above-described joinery, a lateral fitting portion is provided between the inner circumference portion of the rail projection and the inner circumference portion of the first vertical cover portion, which fits together with each other. According to this invention, the metal rail portion and the resin rail portion are fitted together by the lateral fitting portion, and their movement in the direction away from each other is restricted. Therefore, even in the vertical rails of the vertical frame, molding errors and thermal deformation of the resin rail portion are suppressed by the metal rail portion.

[0064] Furthermore, the present invention is characterized in that, in the above-described joinery, an outer sash on the exterior side and an inner sash on the interior side are arranged in the frame, a fifth vertical cover member is attached to the resin profile having the resin rail portion of the vertical rail housed in the outer sash, between the outer sash positioned in the closed position and the third vertical cover portion, and the inner peripheral surface of the fifth vertical cover member is positioned on the extension of the peripheral surface of the fourth vertical cover portion. According to this invention, when the fifth vertical cover member is installed, the inner surface of the vertical frame located on the door edge side of the outer sliding door becomes almost flat, which is advantageous in terms of appearance quality. [Explanation of Symbols]

[0065] 10 Frame body, 11 Left vertical frame, 11A Outer vertical rail, 12 Right vertical frame, 12B Inner vertical rail, 13 Top frame, 13A, 13B Top horizontal rail, 14 Bottom frame, 14A, 14B Bottom horizontal rail, 20A Outer sash, 20B Inner sash, 36 Tight material, 40, 60, 80, 120 Metal profiles, 41 Left frame base, 61 Right frame base, 44 Projection for left rail, 44a Left side fitting part, 50, 70, 90, 140 Resin profiles, 50A Left vertical resin molded body, 50B Inner circumference cover body, 51 Left cover base, 52 Left rail cover part, 52a Left side fitting part, 53 Left visible cover part, 54 Left frame cover part, 55 Cover plate part, 64 64a Right rail projection, 71 Right side fitting part, 72 Right cover base, 72 Right rail cover part, 72a Right side fitting part, 73 Right visible cover part, 74 Right frame cover part, 81 Upper inner visible plate part, 82 Inner visible plate part, 82e Visible projection, 84 Upper outer visible plate part, 85 Upper outer visible plate part, 85a, 97a Upper fitting part, 90A Inner upper resin molded body, 90B Outer upper resin molded body, 91 Upper inner cover base, 92 Upper inner rail cover part, 93 Upper visible cover part, 94 Upper frame cover part, 96 Upper outer cover base, 97 Upper outer rail inner cover part, 98 Upper inner rail outer cover part, 99 Upper inner rail inner circumference cover part, 100 Upper inner rail inner cover part, 100a Intermediate engaging part, 110B windbreak member, 120C bridge material, 121 lower inner facing plate part, 122 lower inner visible plate part, 122b, 128b, 142a, 146a lower fitting part, 124 lower inner end visible plate part, 127 lower outer facing plate part, 128 lower outer visible plate part, 140A inner lower resin molded body, 140B outer lower resin molded body, 141 lower inner cover base part, 142 lower inner rail cover part, 143 lower visible cover part, 144 lower frame cover part, 145 lower outer cover base part, 146 lower outer rail cover part

Claims

1. A door and window fitting comprising a frame body in which left and right vertical frames, an upper frame, and a lower frame are assembled around the four sides, and a sliding screen disposed on the frame body in a manner that allows it to slide in the direction of extension of the lower frame, The lower frame comprises a metal profile formed from metal and a resin profile formed from resin, and the horizontal rail that guides the sliding of the sliding door is composed of a metal rail portion provided on the metal profile and a resin rail portion provided on the resin profile, and the metal rail portion and the resin rail portion are provided with a lower fitting portion that restricts movement in directions away from each other by fitting together. The metal rail portion and the resin rail portion are joined together such that the joint is exposed on the surface located on the inner circumference side of the horizontal rail. The lower fitting portion of the metal rail portion is fitted to the lower fitting portion of the resin rail portion so as to support it from below. The lower fitting portion of the metal rail section and the lower fitting portion of the resin rail section are arranged side by side in the depth direction when fitted together. The aforementioned shoji screen is provided with a sealing material that contacts the surface along the visible direction of the horizontal rail. The fitting is characterized in that the tightening material is in contact with the metal rail portion and the resin rail portion so as to sandwich the portions of the lower fitting portion that are arranged side by side.

2. The aforementioned lower frame is provided with an inward horizontal rail for guiding the interior sash on the inside and an outward horizontal rail for guiding the exterior sash on the outside. The metal profile of the lower frame is, The first lower metal part constitutes the metal rail portion of the inner horizontal rail and has the lower fitting portion provided on the inner circumference side, A second lower metal portion extends inward from the portion located on the outer periphery side of the first lower metal portion, A third lower metal part extending in the visible direction from the edge of the second lower metal part located on the indoor side, It has, The resin profile of the lower frame is, The first lower cover portion covers the visible surface of the first lower metal portion facing the interior, thereby constituting the resin rail portion of the inner horizontal rail, and the lower fitting portion is provided on the inner circumference side portion, A second lower cover portion extends from the outer periphery of the first lower cover portion toward the interior side, thereby covering the second lower metal portion, A third lower cover portion extends from the edge of the second lower cover portion located on the indoor side toward the inner circumference, thereby covering the third lower metal portion, A fourth lower cover portion extending toward the interior from the extended edge of the third lower cover portion and The joinery according to claim 1, characterized by comprising an inner lower resin molded body formed integrally.

3. The aforementioned lower frame is provided with an inward horizontal rail for guiding the interior sash on the inside and an outward horizontal rail for guiding the exterior sash on the outside. The metal profile of the lower frame is, The first lower metal part constitutes the metal rail portion of the inner horizontal rail and has the lower fitting portion provided on the inner circumference side, The fourth lower metal part constitutes the metal rail portion of the outer horizontal rail and has the lower fitting portion provided on the inner circumference side, A fifth lower metal part extends from the portion located on the outer periphery side of the fourth lower metal part toward the interior side and is connected to the portion that becomes the outer periphery side of the first lower metal part. It has, The resin profile of the lower frame is, The fifth lower cover portion covers the visible surface of the fourth lower metal portion facing the interior, thereby constituting the resin rail portion of the outer horizontal rail, and the lower fitting portion is provided on the inner circumference side portion, A sixth lower cover portion extends from the outer periphery of the fifth lower cover portion toward the interior side, thereby covering the fifth lower metal portion. The joinery according to claim 1, characterized in that it comprises an outer lower resin molded body formed integrally with the above.

4. In the lower frame, a windbreak member is attached to the portion located between the inner horizontal rail and the outer horizontal rail, at the midpoint of the length. The door and window fitting according to claim 3, characterized in that the outer lower resin molded body is located on the indoor side of the outer sash that is positioned in the closed position, and is disposed only between the windbreak member and the vertical frame.

5. The joinery according to claim 3, characterized in that a heat insulating material is interposed between the fifth lower metal part and the first lower metal part of the metal profile of the lower frame.

6. The upper frame comprises a metal profile formed from metal and a resin profile formed from resin. The upper frame is provided with an inner horizontal rail that guides the sliding of the inner sash on the interior side, and an outer horizontal rail that guides the sliding of the outer sash on the exterior side. The horizontal rail is composed of a metal rail portion provided on the metal profile and a resin rail portion provided on the resin profile. The metal profile of the upper frame is, The first upper metal portion that constitutes the metal rail portion of the inner horizontal rail, A second upper metal part extends inward from the portion located on the outer periphery side of the first upper metal part, The third upper metal portion that constitutes the metal rail portion of the outer horizontal rail, A fourth upper metal part extends inward from the portion located on the outer periphery side of the third upper metal part and is connected to the portion that becomes the outer periphery side of the first upper metal part. It has, The resin profile of the upper frame is, The first upper cover portion, which covers the visible surface of the first upper metal portion facing the interior, constitutes the resin rail portion of the inner horizontal rail, A second upper cover portion extends from the outer periphery of the first upper cover portion toward the interior side, thereby covering the second upper metal portion, A third upper cover portion extends inward from the edge of the second upper cover portion located on the indoor side, A fourth upper cover portion extending toward the interior from the extended edge of the third upper cover portion, The fifth upper cover portion, which forms the resin rail portion of the outer horizontal rail by covering the visible surface of the third upper metal portion facing the interior, A sixth upper cover portion extends from the outer periphery of the fifth upper cover portion toward the interior side, thereby covering the fourth upper metal portion, The seventh upper cover portion extends inward from the extended edge of the sixth upper cover portion and covers the visible surface of the first upper metal portion facing the outside, thereby constituting the resin rail portion of the inner horizontal rail, The eighth upper cover portion extends inward from the edge located on the inner circumference side of the seventh upper cover portion, covering the inner surface of the first upper metal portion and connecting to the inner portion of the first upper cover portion, thereby constituting the resin rail portion of the inner horizontal rail. The joinery according to claim 1, characterized by having the following features.

7. The joinery according to claim 6, characterized in that the resin profile of the upper frame comprises an inner upper resin molded body formed integrally from the middle portion of the first upper cover portion to the fourth upper cover portion, and an outer upper resin molded body formed integrally from the fifth upper cover portion to the middle portion of the first upper cover portion.

8. The building fitting according to claim 7, characterized in that an upper fitting portion is provided between the inner circumference portion of the third upper metal part and the inner circumference portion of the fifth upper cover portion that fits together, and an intermediate engaging portion is provided between the intermediate portion of the first upper metal part and the intermediate portion of the first upper cover portion that engages with each other.

9. The aforementioned vertical frame comprises a metal profile formed from metal and a resin profile formed from resin. The vertical frame is provided with a vertical rail corresponding to the edge of the sliding door positioned in the closed position, and the vertical rail is composed of a metal rail portion provided on the metal profile and a resin rail portion provided on the resin profile. The metal profile of the aforementioned vertical frame is A frame base extending along the direction of projection, The rail projection, which protrudes inward from the inner circumference of the frame base, constitutes the metal rail portion of the vertical rail. It has, The resin profile of the aforementioned vertical frame is A first vertical cover portion that constitutes the resin rail portion of the vertical rail by covering the visible surface of the rail projection facing the interior, A second vertical cover portion extends from the outer periphery of the first vertical cover portion toward the interior side, thereby covering the frame base portion, A third vertical cover portion extends inward from the edge of the second vertical cover portion located on the indoor side, A fourth vertical cover portion extending toward the interior from the extended edge of the third vertical cover portion and The joinery according to claim 1, characterized by comprising a vertical resin molded body formed integrally with the above.

10. The joinery according to claim 9, characterized in that a lateral fitting portion that fits together with each other is provided between the inner circumference portion of the rail projection and the inner circumference portion of the first vertical cover.

11. The frame is fitted with an exterior sash on the outside and an interior sash on the inside. The joinery according to claim 9, wherein a fifth vertical cover member is attached to the resin profile having the resin rail portion of the vertical rail housed in the outer sash, between the outer sash positioned in the closed position and the third vertical cover portion, and the inner circumference side of the fifth vertical cover member is positioned on the extension of the inner circumference side of the fourth vertical cover portion.

Images