Folding doors and windows and door and window sashes

Abstract

A folding door and window and door and window sash. In the folding door and window, a first door and window sash on the door and window installation side and a second door and window sash on the door and window front end side are foldably connected at their junction via an intermediate hinge. A protrusion is provided between the inner peripheral side depth surface of the installation side frame and the portion of each cutout of the first upper frame and the first lower frame below the center height. A protrusion is provided between the inner peripheral side depth surface of the door and window front end frame and the portion of each cutout of the second upper frame and the second lower frame below the center height. A protrusion is provided between the inner peripheral side depth surface of the first converging frame and the portion of each cutout of the first upper frame and the first lower frame above the center height. A protrusion is provided between the inner peripheral side depth surface of the second converging frame and the portion of each cutout of the second upper frame and the second lower frame above the center height. This folding door and window can maintain an appropriate shape.

Description

Technical Field

[0001] The invention relates to folding doors and windows and door and window sashes. Background Art

[0002] Casement doors and windows sometimes have their front sashes drooping due to the weight of the surface material, etc. Therefore, Patent Document 1 proposes tilting the front end of the door or window upward relative to the mounting side, forming a roughly parallelogram shape. This is then caused to droop by means of an auxiliary door or window frame attached to the main body of the door or window, thereby creating a roughly rectangular sash. This ensures that the in-plane gap between the front end of the main body of the door or window and the auxiliary door or window frame is within an allowable value. This door or window tilts the upper and lower frames by inserting V-shaped gaskets between the mounting side frames and the longitudinal ends of the upper and lower frames.

[0003] On the other hand, a folding door and window is known in which a first door and window sash at the door and window installation side and a second door and window sash at the door and window front end side are foldably connected at their junction by a hinge. The door and window front end frame of the second door and window sash is supported by a door and window pulley.

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2008-180023 Summary of the Invention

[0005] Folding doors and windows described above have the potential for the junction to sag due to the weight of the surface materials of the first and second sashes, thereby tilting the front frame of the second sash. The doors and windows described in Patent Document 1 are designed for casement windows and are not directly applicable to folding doors and windows in which the junction is hinged and the front frame of the second sash is supported by a pulley. Furthermore, the doors and windows described in Patent Document 1 are interposed with a V-shaped gasket, which not only increases the number of components but also complicates assembly.

[0006] The present invention has been made in view of the above-mentioned problems, and its object is to provide a folding door and window that can maintain an appropriate shape. In addition, the present invention has an object to provide a door and window sash that can reduce the number of parts.

[0007] In order to solve the above problems and achieve the purpose, the folding door and window disclosed by the present invention folds the first door and window sash on the door and window installation side and the second door and window sash on the door and window front end side together by a hinge, and the door and window front end frame of the second door and window sash is supported on the door and window pulley, the first door and window sash comprises: an installation side frame, a first confluence frame constituting the confluence portion, and a first upper frame and a first lower frame connecting the installation side frame and the first confluence frame; the second door and window sash comprises: the door and window front end frame, the second confluence frame constituting the confluence portion, and a second upper frame connecting the door and window front end frame and the second confluence frame and the second lower frame, each cutout of the first upper frame, the first lower frame, the second upper frame and the second lower frame is orthogonal to the main viewing surface wall and the depth surface wall, the folding door and window comprises: a door and window installation side inclined support portion, which is provided between the inner peripheral side depth surface of the installation side frame and the portion of each cutout of the first upper frame and the first lower frame below the center height, so that the cutout is inclined relative to the vertical plane; and a door and window front end side inclined support portion, which is provided between the inner peripheral side depth surface of the door and window front end frame and the portion of each cutout of the second upper frame and the second lower frame below the center height, so that the cutout is inclined relative to the vertical plane.

[0008] In addition, the door and window sashes according to the present invention include: an installation side frame, a door and window front end frame, and an upper frame and a lower frame connecting the installation side frame and the door and window front end frame. A first protrusion is provided on the inner peripheral side depth surface of the installation side frame, corresponding to a portion below the center height of each cut-out of the upper frame and the lower frame, so that the cut-out is inclined relative to the vertical plane. A second protrusion is provided on the inner peripheral side depth surface of the door and window front end frame, corresponding to a portion above the center height of each cut-out of the upper frame and the lower frame, so that the cut-out is inclined relative to the vertical plane.

[0009] According to the present invention, the upper frame and the lower frame can be tilted by the corresponding tilting support parts when they are not under their own weight, and can maintain an appropriate shape when they are under their own weight. The tilting support parts are formed as projections, which can reduce the number of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a front view showing a door and window including a folding door and window according to an embodiment of the present invention.

[0011] Figure 2 It is a cross-sectional view of two folding doors and windows in the closed state.

[0012] Figure 3 It is a cross-sectional view of two folding doors and windows in the open state.

[0013] Figure 4 It is a longitudinal cross-sectional view of two folding doors and windows in a closed state.

[0014] Figure 5 It is a longitudinal cross-sectional view of the first upper frame.

[0015] Figure 6 It is a longitudinal cross-sectional view of the first lower frame.

[0016] Figure 7 This is a longitudinal view of the installed side frame as viewed from the inner peripheral side.

[0017] Figure 8 This is a longitudinal view of the lower portion of the mounting side frame as viewed from the inner peripheral side.

[0018] Figure 9 This is a cross-sectional view of the installed side frame.

[0019] Figure 10 It is a cross-sectional view of the protrusion and its surroundings.

[0020] Figure 11 This is a longitudinal view of the first merging frame as viewed from the inner peripheral side.

[0021] Figure 12 is a cross-sectional view of the first confluence frame.

[0022] Figure 13 This is a schematic front view of a folding door and window without any weight acting on it.

[0023] Figure 14 It is a front view showing the door and window according to the first modified example.

[0024] Figure 15 This is a cross-sectional view of the door and window according to the first modification example, in which the folding door and window is in an open state.

[0025] Figure 16 It is a front view showing a door and window according to a second modified example.

[0026] Explanation of symbols

[0027] 10 Folding door and window; 12, 12A, 12B door and window; 14ca track; 16 first door and window sash; 18 second door and window sash; 20 junction; 22 intermediate hinge; 24 surface material; 26 first frame; 28 mounting side frame; 30 first junction frame; 32 first upper frame; 34 first lower frame; 36 mounting side hinge; 40 second frame; 42 door and window front end frame; 42a first door and window front end frame; 42b second door and window front end frame; 44 second junction frame; 46 second upper frame; 48 second lower frame; 50 front end side hinge; 52 door and window pulley; 54 connecting component; 56, 56d, 56u screw holes; 58, 58d, 58u through holes; 60 protrusion; 70 door and window sash; C center; M center height DETAILED DESCRIPTION

[0028] Hereinafter, embodiments of the folding door and window and the door and window sash according to the present invention will be described in detail based on the accompanying drawings.

[0029] Figure 1 1 is a front view showing a door window 12 including the folding door window 10 according to the embodiment of the present invention. The door window 12 is a so-called double-opening door window, and includes two folding doors and windows 10 . Figure 2 1 is a cross-sectional view of two folding doors and windows 10 in a closed state. Figure 3 1 is a cross-sectional view of two folding doors and windows 10 in an open state. Figure 4 It is a longitudinal cross-sectional view of two folding doors and windows 10 in a closed state. The doors and windows 12 separate the interior and exterior of the building. Figure 1 The doors and windows 12 can also be used to separate indoor rooms (such as bathrooms and dressing rooms).

[0030] The door and window 12 has two folding door and windows 10 in the opening of the auxiliary frame body 14. The auxiliary frame body 14 is formed by forming a four-sided frame with two longitudinal auxiliary frames 14a, and an upper auxiliary frame 14b and a lower auxiliary frame 14c connecting the two longitudinal auxiliary frames 14a. The longitudinal auxiliary frame 14a, the upper auxiliary frame 14b and the lower auxiliary frame 14c constituting the auxiliary frame body 14 are extruded profiles formed from aluminum alloy, and are respectively formed to have a cross-section that is approximately the same over the entire length range. The lower auxiliary frame 14c is provided with a track 14ca. The two folding door and windows 10 are formed into a left-right symmetrical structure except for the butt joint portion with each other. In the present invention, for the convenience of explanation, the two folding door and windows 10 are marked with the same symbols, and only the lower auxiliary frames 14a and 14c are marked. Figure 1 The right part of the is described.

[0031] In the present invention, the depth direction refers to the indoor-outdoor direction of the door and window 12. The depth surface refers to the surface extending along the depth direction. The main viewing surface direction refers to the direction perpendicular to the depth direction. For vertically elongated vertical attachment frame 14a, the main viewing surface direction is the left-right direction perpendicular to its length. For horizontally elongated upper attachment frame 14b, the main viewing surface direction is the up-down direction perpendicular to its length. The main viewing surface refers to the surface extending along the main viewing surface direction.

[0032] In the folding door and window 10, a first door and window sash 16 on the door and window mounting side and a second door and window sash 18 on the door and window front end side are foldably connected at their junction 20 via an intermediate hinge 22. A face material 24 is provided between the first door and window sash 16 and the second door and window sash 18. The face material 24 is, for example, multi-layer glass.

[0033] The first door and window sash 16 is constructed by placing a face material 24 on the inner periphery of a first frame 26. The first frame 26 is formed into a rectangular frame shape by forming a surrounding frame comprising a mounting side frame 28, a first merging frame 30 forming the merging portion 20, and a first upper frame 32 and a first lower frame 34 connecting the mounting side frame 28 and the first merging frame 30. The first door and window sash 16 is connected to the vertical attachment frame 14a via a mounting side hinge 36, thereby enabling opening and closing.

[0034] The second door and window sash 18 is configured by disposing the surface material 24 on the inner peripheral side of the second frame 40. The second frame 40 is formed into a rectangular frame shape by composing a peripheral frame including a door and window front end frame 42, a second merging frame 44 constituting the merging portion 20, and a second upper frame 46 and a second lower frame 48 connecting the door and window front end frame 42 and the second merging frame 44.

[0035] The front door frame 42 includes a first front door frame 42a connected to a second upper frame 46 and a second lower frame 48, and a second front door frame 42b flexibly connected to the first front door frame 42a via a front-end hinge 50. A door pulley 52 is provided at the bottom of the second front door frame 42b, which rotates along a track 14ca. In other words, the movement of the second front door frame 42b is guided by the track 14ca.

[0036] The height and width of the first door and window sash 16 and the second door and window sash 18 are equal. The frame materials of the first frame 26 and the second frame 40 are extruded profiles formed from aluminum alloy, just like the above-mentioned auxiliary frame materials. In addition, the cutouts of each frame material are orthogonal to the main viewing surface wall and the depth surface wall. However, as described later, the cutouts of each upper frame and each lower frame are inclined relative to the vertical plane when assembled into the door and window 12. The middle hinge 22 is composed of two hinges 22a separated by a connecting member 54. The first door and window sash 16 and the second door and window sash 18 are housed in the inner peripheral side of the auxiliary frame 14 when the folding door and window 10 is closed. When both folding doors and windows 10 are in a closed state, the door and window front end frames 42 of the two are in contact with each other, whereby the opening of the auxiliary frame 14 is completely closed.

[0037] When the folding door and window 10 is opened, the first door and window sash 16 and the second door and window sash 18 protrude from the opening of the auxiliary frame 14 and face each other, so that Figure 3 The width of the left and right directions in the folding door and window 10 becomes very small. Under the state that two folding doors and windows 10 are all opened, its left and right directions width separately is less, so door and window 12 can obtain wider opening.

[0038] Figure 5 32 is a longitudinal cross-sectional view of the first upper frame 32. Figure 5As shown, the first upper frame 32 includes an outdoor main viewing wall 32a, an indoor main viewing wall 32b, an upper depth wall 32c, and a lower depth wall 32d, and these four walls form a roughly square hollow portion 32e. Four screw holes 56 are formed in the first upper frame 32. The screw holes 56 are used to secure the first upper frame 32 to the mounting side frame 28 and the first converging frame 30 with screws. The screw holes 56 have a C-shaped cross-section and extend longitudinally within the hollow portion 32e. Furthermore, the second upper frame 46 and the second lower frame 48 of the second door and window sash 18 are also provided with the same number of identical screw holes 56. The screw holes 56 in the second upper frame 46 and the second lower frame 48 are used to secure the first upper frame 46 and the second lower frame 48 to the door and window front frame 42 and the second converging frame 44 with screws.

[0039] The four screw holes 56 are positioned approximately symmetrically in the depth direction and the front viewing direction. Specifically, the two upper screw holes 56 (hereinafter referred to as screw holes 56u, and the same applies to other frame materials) are located in the upper depth surface wall 32c, and the two lower screw holes (hereinafter referred to as screw holes 56d, and the same applies to other frame materials) are located in the lower depth surface wall 32d. The two screw holes 56u are located above the center height M of the cutout of the first upper frame 32, while the two screw holes 56d are located below the center height M. The center height M is based on the hollow portion formed by the four walls (in this case, the hollow portion 32e).

[0040] In addition, the two screw holes 56 on the outdoor side are symmetrical in vertical direction, and the two screw holes 56 on the indoor side are symmetrical in vertical direction. The two screw holes 56 on the outdoor side and the two screw holes 56 on the indoor side are arranged on both sides of the center C in the depth direction of the cutout. More specifically, they are located at positions that are approximately symmetrical with respect to the center C.

[0041] Figure 6 34 is a longitudinal sectional view of the first lower frame. Figure 6 As shown, the first lower frame 34 includes an outdoor main viewing wall 34a, an indoor main viewing wall 34b, an upper depth wall 34c, and a lower depth wall 34d. These four walls define a generally square hollow portion 34e. The first lower frame 34 is formed in a shape substantially identical to that of the first upper frame 32 and has four screw holes 56. The relative positions of the four screw holes 56 of the first lower frame 34, based on the center height M and the center C, are identical to those of the four screw holes 56 of the first upper frame 32.

[0042] Figure 7 This is a longitudinal view of the mounting side frame 28 as viewed from the inner peripheral side. Figure 8 This is a longitudinal view of the lower portion of the mounting side frame 28 as viewed from the inner peripheral side. Figure 9 2 is a cross-sectional view of the mounting side frame 28. Figure 10 : is a cross-sectional view of the protrusion 60 and its surroundings. Figure 7 、 Figure 8In the figure, the area that abuts the cutouts of the first upper frame 32 and the first lower frame 34 is marked with a dotted surface. The mounting side frame 28 has eight through-holes 58 formed in total, four in the upper part and four in the lower part. The four upper through-holes 58 are formed in the same positions as the four screw holes 56 in the first upper frame 32. The four lower through-holes 58 are formed in the same positions as the four screw holes 56 in the first lower frame 34. The through-holes 58 corresponding to the screw holes 56u are also referred to as through-holes 58u, and the through-holes 58 corresponding to the screw holes 56d are also referred to as through-holes 58d.

[0043] The mounting side frame 28 is provided with four protrusions (door and window mounting side inclined support portions, door and window mounting side protrusions) 60, four at the top and four at the bottom, for a total of eight. However, the number of protrusions 60 may be increased or decreased according to design conditions. For example, two at the top and two at the bottom, for a total of four protrusions, may be provided. The same applies to the protrusions 60 in the second door and window sash 18 described later. Each protrusion 60 protrudes toward the inner circumference (see FIG. 1 ). Figure 9 、 Figure 10 The protrusion 60 is formed, for example, by stamping. The protrusion 60 is in the shape of a truncated cone, but is not limited thereto. For example, it may be an annular protrusion formed around a stamping hole, or other convex shapes.

[0044] Each pair of the four upper protrusions 60 is positioned symmetrically in the depth direction relative to the screw holes 56d and the two corresponding upper through-holes 58d of the first upper frame 32. In other words, each protrusion 60 is located a distance X from the adjacent screw holes 56d and through-holes 58d in the depth direction. Distance X is set relatively short.

[0045] The four upper protrusions 60 are located at a portion corresponding to the center height M of each cutout of the first upper frame 32 and abut against the lower portion of the first upper frame 32, i.e., the end surface of the lower depth wall 34d. In other words, the four upper protrusions 60 have the function of tilting the cutout of the first upper frame 32 relative to the vertical plane. On the door and window installation side, the lower portion of the cutout of the first upper frame 32 is pushed toward the inner circumference, so that the first upper frame 32 is tilted so as to be raised toward the junction 20 (see FIG. 2 ). Figure 13 ).

[0046] The projections 60 are provided on both sides of the center C of the depth direction of the cutout to be abutted, so that the lower part of the cutout of the first upper frame 32 is lifted evenly, so that the front end of the opposite side does not deviate in the depth direction. Since each projection 60 is formed near the screw hole 56d, the screw B (see Figure 13 ) is effectively transmitted, so that the lower part of the cutout of the first upper frame 32 can be reliably lifted. Since each pair of protrusions 60 is arranged at a symmetrical position with respect to the screw hole 56d in the depth direction, the tightening of each screw B (see Figure 13 The force caused by the movement of the first upper frame 32 is evenly transmitted to the cutout of the first upper frame 32. The cutout of the first upper frame 32 is lifted by the four protrusions 60, thus dispersing the stress and preventing local deformation. Furthermore, this effect, brought about by the arrangement of the multiple protrusions 60, also applies to the four lower protrusions 60 and the eight protrusions 60 of the first converging frame 30 described later.

[0047] Each pair of the four protrusions 60 at the bottom is arranged at a position symmetrical with respect to the screw hole 56d of the first lower frame 34 and the two corresponding through holes 58d at the bottom in the depth direction. The relative positions of the four protrusions 60 at the bottom, based on the screw hole 56d and the two corresponding through holes 58d at the bottom, are the same as those of the four protrusions 60 at the top. In other words, the four protrusions 60 at the bottom have the function of tilting the cutout of the first lower frame 34 relative to the vertical plane. On the door and window installation side, the lower portion of the cutout of the first lower frame 34 is pushed toward the inner peripheral side, so that the first lower frame 34 is tilted in a manner of being lifted toward the confluence portion 20 (see Figure 13 ). This inclination angle is equal to that of the first upper frame 32. The four protrusions 60 at the bottom play the same role on the first lower frame 34 as the four protrusions 60 at the top.

[0048] Figure 11 This is a vertical view of the first merging frame 30 as viewed from the inner peripheral side. Figure 12 is a cross-sectional view of the first merging frame 30. Figure 11 In FIG. 1 , the range that contacts the respective cutouts of the first upper frame 32 and the first lower frame 34 is marked as a dot surface.

[0049] The first merging frame 30 is formed with four through-holes 58 at the top and four at the bottom, for a total of eight. The four through-holes 58 at the top are formed at the same positions as the four screw holes 56 of the first upper frame 32. The four through-holes 58 at the bottom are formed at the same positions as the four screw holes 56 of the first lower frame 34.

[0050] The first merging frame 30 is formed with eight protrusions (first merging tilt support portions, or first merging protrusions) 60, four at the top and four at the bottom. Each protrusion 60, like the protrusions on the mounting side frame 28, protrudes toward the inner circumference. Each pair of the four upper protrusions 60 is positioned symmetrically in the depth direction relative to the screw holes 56u of the first upper frame 32 and the two corresponding upper through-holes 58u. Each pair of the four lower protrusions 60 is positioned symmetrically in the depth direction relative to the screw holes 56u of the first lower frame 34 and the two corresponding lower through-holes 58u.

[0051] That is, the protrusions 60 of the mounting side frame 28 are formed at positions along the lower depth surface wall 32d of the first upper frame 32 and the lower depth surface wall 34d of the first lower frame 34. Conversely, the protrusions 60 of the first merging frame 30 are formed at positions along the upper depth surface wall 32c of the first upper frame 32 and the upper depth surface wall 34c of the first lower frame 34.

[0052] The protrusion 60 of the first converging frame 30 is located at a portion corresponding to the center height M above the cutouts of the first upper frame 32 and the first lower frame 34, and abuts against the end faces of the upper depth surface wall 32c and the upper depth surface wall 34c. In other words, the protrusion 60 of the first converging frame 30 has the function of tilting the cutouts of the first upper frame 32 and the first lower frame 34 relative to the vertical plane. On the converging portion 20 side, the upper portions of the cutouts of the first upper frame 32 and the first lower frame 34 are pushed toward the inner circumference, so that the first upper frame 32 and the first lower frame 34 are tilted downward toward the door and window installation side (see Figure 13 Thus, the first door and window sash 16 is formed into a parallelogram, and is urged so that the first merging frame 30 is located slightly higher than the mounting side frame 28 .

[0053] In other words, the first upper frame 32 and the first lower frame 34 are respectively lifted up at the lower portion of the cutout by the protrusions 60 on the mounting side frame 28 side, and symmetrically lifted up at the upper portion of the cutout on the first junction frame 30 side, thereby maintaining balance. However, depending on design requirements, providing the protrusions 60 only on the mounting side frame 28 can also achieve the effect of tilting the first upper frame 32 and the first lower frame 34.

[0054] Figure 13 1 is a schematic front view of the folding door and window 10 in a state where it is not subjected to its own weight. Figure 13 As shown, the second door and window sash 18 is roughly symmetrical with the first door and window sash 16. Specifically, the first frame 26, mounting side frame 28, first converging frame 30, first upper frame 32, and first lower frame 34 of the first door and window sash 16 correspond to the second frame 40, door and window front frame 42, second converging frame 44, second upper frame 46, and second lower frame 48 of the second door and window sash 18. The second upper frame 46 is substantially identical to the first upper frame 32. The second lower frame 48 is substantially identical to the first lower frame 34. Eight protrusions (door and window front side inclined supports, door and window front side protrusions) 60 are formed in the door and window front side protrusions 42 at positions symmetrical to the mounting side frames 28. Eight protrusions (second converging inclined supports, second converging protrusions) 60 are formed in the second converging frame 44 at positions symmetrical to the first converging frame 30.

[0055] The second upper frame 46 and the second lower frame 48 are each formed so that the lower portion of the cutout is pushed inward by the protrusion 60 on the door window front end side, and the upper portion of the cutout is pushed inward by the protrusion 60 on the confluence portion 20 side. As a result, the second upper frame 46 and the second lower frame 48 are tilted downward toward the door window front end side. However, even if the protrusion 60 is provided only on the door window front end frame 42 due to design conditions, the second upper frame 46 and the second lower frame 48 can still be tilted.

[0056] The inclination of the second upper frame 46 and the second lower frame 48 is opposite to that of the first upper frame 32 and the first lower frame 34, and the inclination degree is equal. In other words, the second door and window sash 18 is formed into a parallelogram in the opposite direction to the first door and window sash 16. Figure 13 1 and 18. The first door and window sash 16 and the second door and window sash 18 are shown with an angle θ1 exceeding 90 degrees and an angle θ2 less than 90 degrees. However, the first door and window sash 16 and the second door and window sash 18 are formed into such a parallelogram before being mounted on the auxiliary frame 14, and are in a state of being placed on a plane and not subject to the action of their own weight.

[0057] In addition, the door and window installation side of the folding door and window 10 is supported by the vertical auxiliary frame 14a through the installation side hinge 36, and the front end of the door and window is supported by the lower auxiliary frame 14c through the door and window pulley 52, but the junction 20 is not supported by the auxiliary frame body 14. The surface material 24 has a certain degree of weight, so the junction 20 is as follows. Figure 13 As shown by the arrow, there is a tendency to droop downward, and further, the first door and window sash 16 and the second door and window sash 18 have a tendency to be pulled toward the confluence portion 20 and tilted.

[0058] As a result, the first upper frame 32, the first lower frame 34, the second upper frame 46 and the second lower frame 48, which are tilted by the action of the protrusions 60, are slightly deformed and become substantially horizontal, and the first door and window sash 16 and the second door and window sash 18, which were previously formed as parallelograms, are formed as follows. Figure 1 In addition, in this embodiment, the deformation of each upper frame and each lower frame is the amount of drooping (mainly due to the contact with the upper portion 62 (see Figure 1 The rectangular shape of the first and second sashes 16, 18 prevents sagging at the junction 20, thereby maintaining the front sash 42 in the vertical direction. The protrusion of the projection 60 can be set through calculations, experiments, simulations, etc. to maintain the first and second sashes 16, 18 in a rectangular shape.

[0059] As mentioned above, if Figure 1As shown, the door and window 12 comprises two folding doors and windows 10 that are symmetrical except for their abutment. While the two folding doors and windows 10 are subject to their own weight, as indicated by the arrows, the protrusions 60 maintain the vertical alignment and mutual contact of the front end frames 42 of both doors and windows. Consequently, no gap is created at the abutment upper portion 62. The rectangular shape of the first and second sashes 16, 18 of the folding doors and windows 10 prevents excessive forces from being applied to the hinges 22, 36, 50, or the internal mechanisms.

[0060] Figure 14 It is a front view showing a door window 12A according to a first modification. Figure 15 This is a cross-sectional view of the folding door and window 12A with the folding door and window 10 in the open position. The door and window 12A is a so-called single-opening type, with a folding door and window 10 provided within the opening of the attached frame 14A. The attached frame 14A is formed by a pair of longitudinal attached frames 14Aa, an upper attached frame 14Ab, and a lower attached frame 14Ac, forming a surrounding frame. The longitudinal attached frames 14Aa are the same size as the longitudinal attached frames 14a of the attached frame 14 described above. The lengths of the upper attached frames 14Ab and the lower attached frames 14Ac are half the lengths of the upper attached frames 14b and the lower attached frames 14c of the attached frame 14 described above. The folding door and window 10 is substantially the same as the folding door and window 12 described above. As described above, the folding door and window 10 maintains a rectangular shape for the first and second door and window sashes 16 and 18 through the action of the protrusions 60, thereby preventing the junction 20 from sagging and allowing the front end frame 42 of the door and window to remain in a vertical direction. Therefore, no gap is generated in the contact upper portion 62 between the door and window front end frame 42 and the vertical additional frame 14Aa.

[0061] As described above, in the folding door and window 10 according to this embodiment, a protrusion 60 is provided on the inner circumferential depth surface of the mounting side frame 28, corresponding to a portion below the center height M of each cutout of the first upper frame 32 and the first lower frame 34, thereby tilting each cutout relative to the vertical plane. Furthermore, a protrusion 60 is provided on the inner circumferential depth surface of the door and window front frame 42, corresponding to a portion below the center height M of each cutout of the second upper frame 46 and the second lower frame 48, thereby tilting each cutout relative to the vertical plane. As a result, when unloaded, the first door and window sash 16 and the second door and window sash 18 form parallelograms tilted in opposite directions, but when loaded, they assume a rectangular shape, maintaining their proper configuration.

[0062] The members that tilt the cutouts of the first upper frame 32, first lower frame 34, second upper frame 46, and second lower frame 48 are protrusions 60 formed on the inner circumferential depth surfaces of the mounting side frame 28, first junction frame 30, door and window front frame 42, and second junction frame 44. This reduces the number of components, reduces costs, and facilitates assembly. The protrusions 60 can be easily formed by stamping, for example. The protrusions 60 tilt the cutouts of the first upper frame 32, first lower frame 34, second upper frame 46, and second lower frame 48, eliminating the need for tilting the cutouts themselves. Instead, they can be cut vertically along their length, making them easy to process using standard processing machines. According to the design conditions, the components that tilt the cutouts of the first upper frame 32, the first lower frame 34, the second upper frame 46 and the second lower frame 48 (the door and window installation side tilt support portion, the door and window front end side tilt support portion, the first converging tilt support portion, the second converging tilt support portion) are not limited to the protrusion 60, as long as they are components that are arranged between the inner peripheral side depth surface of the installation side frame 28, the first converging frame 30, the door and window front end frame 42 and the second converging frame 44 and the cutouts so that the cutouts are tilted relative to the vertical plane.

[0063] Figure 16 This is a front view of a door and window 12B according to a second variant. The door and window 12B is a door or a vertically swinging casement door and window, and includes a door and window sash 70 according to an embodiment of the present invention within an opening of an attached frame 14B. The attached frame 14B is composed of a pair of longitudinal attached frames 14Ba, an upper attached frame 14Bb, and a lower attached frame 14Bc, forming a surrounding frame. The door and window sash 70 has a surface material 24 within the frame, which is composed of a mounting side frame 72, a door and window front end frame 74, an upper frame 76, and a lower frame 78. The door and window sash 70 has the same structure as the first door and window sash 16 described above, with the mounting side frame 72, the door and window front end frame 74, the upper frame 76, and the lower frame 78 corresponding to the mounting side frame 28, the first junction frame 30, the first upper frame 32, and the first lower frame 34. The mounting side frame 72 is rotatably connected to the longitudinal attached frame 14Ba on one side via a mounting side hinge 36, allowing the door and window sash 70 to be opened or closed.

[0064] Similar to the mounting side frame 28, the mounting side frame 72 has a projection 60 (first projection) at a portion corresponding to a height below the center of each cutout. Similar to the first junction frame 30, the door and window front end frame 74 has a projection 60 (second projection) at a portion corresponding to a height above the center of each cutout. These projections help the door and window sash 70 assume a parallelogram shape when unloaded and a rectangular shape when loaded. This door and window 12B and door and window sash 70 prevent sagging and tilting of the door and window front end frame 74.

[0065] The door and window sash 70 is maintained in an appropriate shape by the protrusion 60. Since the protrusion 60 is formed on the mounting side frame 72 and the door and window front end frame 74, the number of components is not increased and the cost can be reduced, and the assembly operation is facilitated.

[0066] The present invention is not limited to the above-described embodiment, and can be freely modified within the scope not departing from the gist of the present invention.

[0067] The folding door and window of the present invention is connected to each other by a hinge so that a first door and window sash on the door and window installation side and a second door and window sash on the door and window front end side can be folded together, and the door and window front end frame of the second door and window sash is supported on a door and window pulley, the first door and window sash comprises: an installation side frame, a first merging frame constituting the merging portion, and a first upper frame and a first lower frame connecting the installation side frame and the first merging frame, the second door and window sash comprises: the door and window front end frame, a second merging frame constituting the merging portion, and a second upper frame and a second lower frame connecting the door and window front end frame and the second merging frame, Each cutout of the first upper frame, the first lower frame, the second upper frame, and the second lower frame is perpendicular to the main viewing surface wall and the depth surface wall. The folding door and window comprises: a door and window installation side tilting support portion provided between the inner peripheral side depth surface of the installation side frame and a portion below the center height of each cutout of the first upper frame and the first lower frame, so as to tilt the cutout relative to a vertical plane; and a door and window front end side tilting support portion provided between the inner peripheral side depth surface of the door and window front end frame and a portion below the center height of each cutout of the second upper frame and the second lower frame, so as to tilt the cutout relative to a vertical plane. In this folding door and window, the upper frame and the lower frame are tilted by the corresponding tilting support portions when not bearing their own weight, and can maintain their proper shape when bearing their own weight.

[0068] The folding door and window according to the present invention may further include: a first converging tilted support portion provided between the inner peripheral side depth surface of the first converging frame and a portion of each cutout of the first upper frame and the first lower frame above the center height, so as to tilt the cutout relative to a vertical plane; and a second converging tilted support portion provided between the inner peripheral side depth surface of the second converging frame and a portion of each cutout of the second upper frame and the second lower frame above the center height, so as to tilt the cutout relative to a vertical plane. Thus, the folding door and window can further maintain its proper shape.

[0069] In the folding door and window according to the present invention, the door and window installation-side inclined support portion can be a door and window installation-side protrusion formed on the inner peripheral side depth surface of the installation side frame, the door and window front end side inclined support portion can be a door and window front end side protrusion formed on the inner peripheral side depth surface of the door and window front end frame, the first converging inclined support portion can be a first converging protrusion formed on the inner peripheral side depth surface of the first converging frame, and the second converging inclined support portion can be a second converging protrusion formed on the inner peripheral side depth surface of the second converging frame. Thus, forming the inclined support portion as a protrusion can reduce the number of components.

[0070] In the folding door and window according to the present invention, the door and window mounting side protrusion, the door and window front end side protrusion, the first merging protrusion, and the second merging protrusion can be provided on both sides sandwiching the center of the depth direction of the abutting cutout. This allows each upper frame and each lower frame to be supported in a balanced manner.

[0071] The folding door and window according to the present invention may include screw holes formed in the first upper frame and the first lower frame for securing the mounting side frame and the first merging frame with screws, and the door and window mounting side protrusions, the door and window front end protrusions, the first merging protrusions, and the second merging protrusions are arranged at positions symmetrical in the depth direction with respect to the screw holes. Thus, force generated by the screws effectively acts on the upper frame and the lower frame.

[0072] In the folding door and window involved in the present invention, the door and window front end frame can have a first door and window front end frame and a second door and window front end frame, the first door and window front end frame is connected to the second upper frame and the second lower frame, the second door and window front end frame is bendably connected to the first door and window front end frame through a hinge, and the door and window pulley is arranged at the lower part of the second door and window front end frame, and its moving direction is guided by the track.

[0073] The door and window sash of the present invention comprises: a mounting side frame, a door and window front end frame, and an upper frame and a lower frame connecting the mounting side frame and the door and window front end frame. A first protrusion is provided on the inner circumferential side depth surface of the mounting side frame, corresponding to a portion below the center height of each cutout of the upper frame and the lower frame, so that the cutout is tilted relative to a vertical plane. A second protrusion is provided on the inner circumferential side depth surface of the door and window front end frame, corresponding to a portion above the center height of each cutout of the upper frame and the lower frame, so that the cutout is tilted relative to a vertical plane. According to this door and window sash, the upper frame and the lower frame tilt based on the corresponding protrusions when they are not under their own weight, and can maintain an appropriate shape when they are under their own weight. Achieving this tilting method using protrusions can reduce the number of components.

Claims

1. A folding door and window, wherein a first door and window sash at a door and window installation side and a second door and window sash at a front end side of the door and window are foldably connected at their junction by a hinge, wherein the front end frame of the second door and window sash is supported by a door and window pulley, wherein the folding door and window is characterized in that: The first door and window sash comprises: a mounting side frame, a first merging frame constituting the merging portion, and a first upper frame and a first lower frame connecting the mounting side frame and the first merging frame. The second door and window sash comprises: the door and window front end frame, a second merging frame constituting the merging portion, and a second upper frame and a second lower frame connecting the door and window front end frame and the second merging frame. Each cutout of the first upper frame, the first lower frame, the second upper frame and the second lower frame is orthogonal to the main viewing surface wall and the depth surface wall. The folding door and window has: A door and window installation side inclined support portion, which is provided between the inner peripheral side depth surface of the installation side frame and a portion of each cutout of the first upper frame and the first lower frame below the center height, so that the cutout is inclined relative to the vertical plane; as well as The door and window front end side inclined support portion is provided between the inner peripheral side depth surface of the door and window front end frame and the portion of each cutout of the second upper frame and the second lower frame below the center height, so that the cutout is inclined relative to the vertical plane. The folding door and window has: A first merging inclined support portion is provided between the inner peripheral side depth surface of the first merging frame and a portion of each cutout of the first upper frame and the first lower frame above the center height, so as to tilt the cutout relative to the vertical plane; as well as The second converging inclined support portion is provided between the inner peripheral side depth surface of the second converging frame and the portion of each cutout of the second upper frame and the second lower frame above the center height, so that the cutout is inclined relative to the vertical plane. The door and window installation side inclined support portion is a door and window installation side protrusion formed on the inner peripheral side deep surface of the installation side frame. The door and window front end side inclined support portion is a door and window front end side protrusion formed on the inner peripheral side deep surface of the door and window front end frame. The first merging inclined support portion is a first merging protrusion formed on the inner peripheral side deep surface of the first merging frame. The second merging inclined support portion is a second merging protrusion formed on the inner peripheral side deep surface of the second merging frame. The door and window installation side protrusion, the door and window front end side protrusion, the first merging protrusion and the second merging protrusion are arranged on both sides sandwiching the center of the abutted cutout in the depth direction.

2. The folding door and window according to claim 1, characterized in that: The first upper frame and the first lower frame are formed with screw holes, and the screw holes are used to fix the first upper frame and the first lower frame to the installation side frame and the first merging frame by screws. Each pair of the door and window installation side protrusions, the door and window front end side protrusions, the first merging protrusions, and the second merging protrusions are arranged at positions symmetrical with respect to the screw holes in the depth direction.

3. The folding door and window according to claim 1 or 2, characterized in that: The door and window front end frame comprises a first door and window front end frame and a second door and window front end frame, the first door and window front end frame is connected to the second upper frame and the second lower frame, and the second door and window front end frame is bendably connected to the first door and window front end frame via a hinge. The door and window pulley is arranged at the lower part of the front end frame of the second door and window, and its moving direction is guided by the track.

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