Fixture

Abstract

To provide a fixture with excellent design and workability arranged so as to be L-letter shaped with use of a mullion.SOLUTION: The present invention is directed to a fixture having a pair of frame bodies 2, sashes 5, 6 fitted into the frame bodies 2, and a mullion 8 for connecting the pair of frame bodies 2 in an L-letter shaped fashion in plan view. The mullion 8 has a pair of side surface portions 8b connected to and covered by vertical frames 23 of the frame bodies 2. An inner corner portion 82 formed by being connected with the pair of side surface portions 8b is formed of a curve portion and / or a plane portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to building materials. [Background technology]

[0002] A conventional window unit has been proposed in which a frame provided in a partition wall is divided into an upper section and a lower section, with the upper section containing an open / close shoji screen that rotates in one direction via a rotating shaft, and the lower section containing a fixed shoji screen. The window units can be arranged consecutively in the left-right direction to form a continuous window (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-031785 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, window units may be placed not only on wall surfaces but also in the corners of buildings. In such cases, two consecutive window units are expected to be connected in an L-shape using a mullion. However, with conventional mullions, it is necessary to connect the two window units and the mullion at three corners in total, making on-site construction difficult and creating an unattractive appearance for the completed L-shaped window unit.

[0005] The present disclosure aims to provide a fixture that is excellent in design and construction when configured in an L-shape using mullions. [Means for solving the problem]

[0006] The present disclosure relates to a fitting comprising a pair of frame bodies, a shoji screen attached within the frame bodies, and a post connecting the pair of frame bodies in an L-shape in plan view, wherein the post has a pair of side portions that are connected to and shielded by the vertical frames of the frame bodies, and the inner corner portion formed by connecting the pair of side portions is composed of a curved portion and / or a flat portion. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of an L-shaped multi-window unit according to the present disclosure, viewed from the outside of a corner portion. [Figure 2] FIG. 1 is a perspective view of an L-shaped multi-window unit according to the present disclosure, viewed from the inside of a corner portion. [Figure 3] FIG. 3 is an enlarged cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is an enlarged cross-sectional view taken along line IV-IV in FIG. [Figure 5] FIG. 2 is an enlarged cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 1 is an exploded perspective view of a window unit according to the present disclosure. [Figure 7] FIG. 7 is an enlarged cross-sectional view taken along line VII-VII in FIG. 5. [Figure 8] FIG. 2 is a perspective view of a first bearing member according to the present disclosure. [Figure 9] FIG. 2 is a perspective view of a second bearing member according to the present disclosure. [Figure 10] FIG. 10 is an enlarged cross-sectional view taken along line XX in FIG. 9. [Figure 11] FIG. 1 is a perspective view showing a friction stay of a projection window according to the present disclosure. [Figure 12] FIG. 1 is a perspective view of a spacer according to the present disclosure. [Figure 13] FIG. 1 is a perspective view showing a middle frame according to the present disclosure. [Figure 14] FIG. 1 is a perspective view showing a lower frame according to the present disclosure. [Figure 15] FIG. 1 is a perspective view showing the arrangement of a middle frame and a lower frame according to the present disclosure. [Figure 16] FIG. 16 is an enlarged cross-sectional view taken along line XVI-XVI of FIG. 15. [Figure 17]FIG. 10 is a cross-sectional view showing the arrangement of a conventional inner frame. [Figure 18] FIG. 18 is an enlarged cross-sectional view taken along line XVIII-XVIII in FIG. 15. [Figure 19] FIG. 1 is a perspective view of a mullion according to the present disclosure. [Figure 20] FIG. 2 is a perspective view of a mullion according to the present disclosure, viewed from the opposite side. [Figure 21] FIG. 1 is a perspective view of an L-shaped multi-window unit with a mullion according to the present disclosure, viewed from the inside of the corner portion. [Figure 22] FIG. 1 is a plan view of an L-shaped multi-window unit with a mullion according to the present disclosure. [Figure 23] FIG. 10 is a plan view showing a modified example of a mullion according to the present disclosure. [Figure 24] FIG. 10 is a plan view showing a modified example of a mullion according to the present disclosure. [Figure 25] FIG. 1 is a plan view showing the installation of a window unit according to the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In this specification, the term "visible direction" refers to the face direction of a shoji screen in a fitting placed in an opening formed in a building, and the term "visible direction" refers to the thickness direction of the shoji screen.

[0009] As shown in Figures 1 and 2, the window unit 1 of this embodiment is placed so as to be continuous with an opening formed in a building. In Figures 1 and 2, the wall surface on which the opening is formed is represented by a two-dot chain line, and the height, width and thickness dimensions of the wall surface are not limited. For example, the window unit 1 can also be installed between the floor and ceiling of an unpartitioned indoor space without an opening formed in the wall surface. The window unit 1 is configured by fitting a projection window 5 in the upper section of a frame body 2 and a fixed window 6 in the lower section of the frame body 2.

[0010] The window unit 1 of this embodiment can be installed as a continuous window unit by connecting the vertical frames 23A and 23B with screws. It is also possible to configure an L-shaped continuous window unit 10 by connecting a pair of frames 2 in an L shape using mullions 8. In the drawings in this specification, the outside where the projection window 5 is pushed out to open is designated X1, and the opposite inside is designated X2.

[0011] As shown in Figure 6, the window unit 1 comprises a frame body 2, a protruding cover material 3, a bearing material 4, a protruding window 5, a fixed window 6, and a stopper 7. As shown in Figures 1 and 2, the L-shaped multi-window unit 10 is made up of a mullion 8 and multiple window units 1.

[0012] As shown in FIG. 6, the frame body 2 is formed by an upper frame 21, a lower frame 22, and vertical frames 23 arranged in the left-right direction, which are framed in a generally rectangular shape. Furthermore, a middle frame 24 is arranged between the two vertical frames 23 and extends in the left-right direction. The frame body 2 is formed from a shaped member obtained by extruding a metal such as aluminum, but is not limited to this. As shown in FIGS. 3 and 6, the upper frame 21 and the lower frame 22 have recesses extending along the length of their inner peripheral projected surfaces. Covering material C made of an elastic material such as rubber is provided in the recesses. The covering material C has a flat surface C1 that fits into the recesses like a lid, and the opening of the recess is covered by the flat surface C1 of the covering material C, so that the inner peripheral projected surfaces of the upper frame 21 and the lower frame 22 are flush with each other.

[0013] The upper frame 21 is a rectangular tubular horizontal frame and, as shown in FIG. 5, has a main body 211 and a lower extension 212. The main body 211 has an upper surface 211a and a lower surface 211b, and has a hollow space formed therein. The lower extension 212 extends laterally from the X2-side end of the lower surface 211b of the main body 211, then bends at a substantially right angle and extends downward. With this configuration, the lower extension 212 extends downward from the lower surface 211b at the X2-side end of the main body 211, thereby providing a screen that shields the gap between the upper frame 21 and the upper stile 51 of the projection window 5 from the X2 direction. This improves the design of the window unit 1.

[0014] The vertical frame 23 includes vertical frame 23A and vertical frame 23B. The two vertical frames have the same shape, with vertical frame 23A on the right side and vertical frame 23B on the left side when viewed from the X1 direction, and are arranged symmetrically with respect to the projection direction. As shown in FIG. 3, vertical frame 23A has an X1-side projection surface 23a, an outer peripheral projection surface 23b, an X2-side projection surface 23c, and an inner peripheral projection surface 23d. The four surfaces are configured in a substantially rectangular shape, and a hollow portion H1 is formed inside. The X2-side projection surface 23c has a vertical frame extension portion 231 that extends vertically and continuously along the vertical direction of vertical frame 23A, extending toward the inner peripheral side. The inner peripheral projection surface 23d is arranged to extend from a position closer to the outer peripheral side than the end of the X1-side projection surface 23a. As described above, the vertical frame 23B is a member that is arranged symmetrically with the vertical frame 23A, and since the configuration is the same, a description thereof will be omitted. The detailed configurations of the middle frame 24 and the lower frame 22 will be described later.

[0015] As shown in FIGS. 3 and 6 , a pair of protruding cover materials 3 are provided on a pair of vertical frames 23. The protruding cover materials 3 are formed as plates that are generally L-shaped in cross section and extend in the vertical direction. They include a projection plate 31 arranged along the inner peripheral projection surface 22d of the vertical frame 23, a sight plate 32 arranged along the X2-side projection surface 23c, and a spacer hole 33. As shown in FIG. 2 , when the window unit 1 is viewed from the X2 direction, the sight plate 32 is obscured by the vertical frame extension 231 on the X2-side projection surface 23c and cannot be seen. A spacer 34 is attached to the elongated spacer hole 33. The spacer 34 is an oval-shaped support member made of resin or the like, and a friction stay 55 (described later) is fixed to the vertical frame 23 via the spacer 34.

[0016] As shown in FIG. 6, the pair of bearing members 4 is composed of a first bearing member 41 and a second bearing member 42. The bearing member 4 may be, for example, a resin member, but is not limited to this. A common configuration of the pair of bearing members is that the bearing member 4 is formed from a substantially rectangular plate material and has a through hole 4h, a tubular portion 4a that communicates with the through hole 4h and protrudes toward the outer periphery, an outer peripheral prospective surface 4b that is arranged along the prospective plate 31 of the protruding cover member 3, and an inner peripheral prospective surface 4c. The tubular portion 4a has multiple slits and is provided with a tapered surface that narrows toward the end, and a hook portion 40 is formed by a tip portion bent at a substantially right angle. As shown in Figure 7, the tubular portion 4a is inserted into the through holes provided in the projection plate 31 of the protruding cover material 3 and the inner projection surface 23d of the vertical frame 23, and is engaged with the vertical frame 23 by the hook portion 40, thereby securely fixing the bearing material 4 to the protruding cover material 3 and the vertical frame 23.

[0017] As shown in Fig. 8, in addition to the components common to the two bearing members, the first bearing member 41 has a recess 4d and a protrusion 411. The cylindrical portion 4a protrudes from the outer peripheral visible surface 4b and is fixed to the vertical frame 23A located on the right side when viewed from the X1 direction. As shown in Fig. 7, a clearance CL4 is formed between the protrusion window 5 and the inner peripheral visible surface 4c. The protrusion 411 has an inclined surface 411a and a retaining portion 411b.

[0018] 7 and 8, the protrusion 411 protrudes inward from the inner peripheral projected surface 4c by a width W1 so as to fill the clearance CL4, and has an inclined surface 411a on its upper surface that slopes downward in the X1 direction from the bottom of the through-hole 4h. The inclined surface 411a is formed with a gentle slope so as to guide the end of the rotation shaft 54 (described later) into the through-hole by sliding it in the direction of arrow Y. The X1-direction end of the protrusion 411 has an arc-shaped holding portion 411b that curves slightly upward.

[0019] The recess 4d is formed on the inner peripheral visible surface 4c, extending from the through hole 4h in the X1 direction to reach the visible surface of the first bearing member 41, and is disposed so that its concave shape is open toward the inner peripheral side. As shown in FIG. 8, the upper wall surface of the recess 4d has a first inclined surface S1 that widens upward in the X1 direction. Returning to FIG. 7, the bottom surface of the recess 4d has a second inclined surface S2 that continues from the through hole 4h to the visible surface of the first bearing member 41, and the second inclined surface S2 is formed so as to slope toward the outer periphery in the X1 direction. In other words, the inclination angles of the first inclined surface S1 and the second inclined surface S2 configure the recess 4d so that its opening gradually widens in the X direction.

[0020] With this configuration, when installing the projection window 5 described below, the rotating shaft 54 inserted from the X1 direction can be easily guided by the protrusion 411 of the first bearing member 41. Conversely, when removing the projection window 5, the inclined surface of the protrusion 411 and the sloped surface of the recess 4d function together to quickly move the rotating shaft 54 in the X1 direction. Furthermore, due to the effect of the arc-shaped holding portion 411b formed on the end of the protrusion 411 described above, even if the user inadvertently lets go of the rotating shaft 54 when removing the rotating shaft 54 from the through-hole 4h, the holding portion 411b prevents the end of the rotating shaft 54 from sliding downward, thereby preventing the rotating shaft 54 from falling.

[0021] As shown in Fig. 9, the second bearing material 42 differs from the first bearing material 41 in the presence or absence of a protrusion 411 and the shape of the recess. The cylindrical portion 4a of the second bearing material 42 protrudes from the outer peripheral visible surface 4b and is fixed to the vertical frame 23B located on the left side when viewed from the X1 direction, and is configured to be symmetrical with the first bearing material 41 in the visible direction. The second bearing material 42 does not have a protrusion 411, and as shown in the cross-sectional view of Fig. 10, there is no portion protruding from the inner peripheral visible surface 4c.

[0022] As shown in Figures 9 and 10, the position of the recess 4e of the second bearing member 42 is the same as the recess 4d of the first bearing member 41, so a description thereof will be omitted. The recess 4e has a generally rectangular shape when viewed from the side from the inner periphery, and the sloped surface S22 that slopes downward from the through hole 4h in the X1 direction has a notched shape that ends just before the visible surface of the second bearing member 42. In addition, because the tip of the recess 4e is notched, there is no portion that corresponds to the first sloped surface S1 of the first bearing member 41. When installing and removing the projection window 5 (described later), there is no need to move the rotating shaft 54 along the inner periphery-side visible surface 4c of the second bearing member 42, making it easy to insert the rotating shaft 54 directly into the through hole 4h.

[0023] Returning to Figure 6, the protrusion window 5 is located on the upper level of the frame 2. The protrusion window 5 has an opening / closing window section 50, a rotation shaft 54, and a friction stay 55. The opening / closing window section 50 comprises a frame 501 and an opening / closing glass G1. The frame 501 is composed of an upper frame 51, a lower frame 52, and vertical frames 53 arranged in the left-right direction, which are framed in a generally rectangular shape. The frame 501 is formed from a shaped member obtained by extruding a metal such as aluminum, for example, but is not limited to this. The frame 501 has a slit in the center along the longitudinal direction, and the opening / closing glass G1 is fixed to the frame 501 via a resin member provided in the slit.

[0024] Vertical frame 53 is arranged symmetrically with respect to the projection direction and includes resin cap 531 that completely covers the upper end and resin cap 532 that completely covers the lower end. As shown in Fig. 7, resin cap 531 is fixed to vertical frame 53 with a screw, and rotation shaft 54 is inserted into a through hole provided in resin cap 531 in the projection direction.

[0025] 3, stile 53 is configured in a generally rectangular cylindrical shape with X1-side sight surface 53a, outer-periphery sight surface 53b, X2-side sight surface 53c, and inner-periphery sight surface 53d, with hollow portion H2 formed by partition surface 53e. X1-side sight surface 53a is continuous with flat X1-side sight surface 53A and has stile extension portion 533 that extends vertically and outward in the vertical direction of stile 53. With this configuration, clearance CL1 is provided between X2-side sight surface 53c and bearing member 4, while clearance CL2, which is narrower than clearance CL1, is provided between X1-side sight surface 53a and bearing member 4.

[0026] The vertical frame extension 533 maintains sufficient clearance CL1 between the bearing material 4 and the projection window 5 for installation, while only a narrower clearance CL2 is visible on the X1 side, making it difficult to see the internal structure and improving the design of the window unit 1. As shown in Figures 2 and 3, on the X2 side, the vertical frame extension 231 of the vertical frame 23 covers and conceals the clearance CL1 between the bearing material 4 and the projection window 5, so the clearance CL1 cannot be seen from the X2 direction.

[0027] Furthermore, because the X1-side visible surface 23a of the vertical frame 23 does not have an extension, there is a wide opening between the vertical frame 23A and the vertical frame 23B in the X1 direction. This configuration makes it easier to install the projection window 5 from the X1 side when installing and removing the projection window 5, which will be described later, and improves the installability of the window unit 1. In other words, these configurations make it possible to provide a window unit 1 that is easy to install while improving its design.

[0028] As shown in FIG. 6, a pair of rotating shafts 54 are provided on the upper frame 51 of the frame body 501 and serve as central shafts for rotating the projection window 5 in the X1 direction. The rotating shafts 54 include a movable shaft 54a and a fixed shaft 54b. As shown in FIG. 7, the movable shaft 54a is inserted into the first bearing member 41 provided on the vertical frame 23A and protrudes from the outer peripheral surface of the vertical frame 53. The movable shaft 54a has a movable end 541 that expands and contracts due to a spring provided inside. The movable end 541 allows the length of the movable shaft 54a on the outer peripheral side to be changed. As shown in FIG. 6, the fixed shaft 54b is inserted into the second bearing member 42 provided on the vertical frame 23B. The fixed shaft 54b does not expand and contract, and its length remains fixed.

[0029] As shown in FIG. 11, the friction stay 55 is provided on a vertical frame 53 arranged in the left-right direction of the frame body 501. Note that the opening and closing glass G1 is omitted from FIG. 11. The friction stay 55 has a first shaft member 551, a bar member 552, a second shaft member 553, and a fixing member 554. The first shaft member 551 is fixed to the outer peripheral visible surface 53b of the vertical frame 53, and the fixing member 554 is fixed to the inner peripheral visible surface 23d of the vertical frame 23 via a spacer 34. The fixing member 554 has an elongated hole H3, and the second shaft member 553, which is slidably fixed to the elongated hole H3, can move in the longitudinal direction of the elongated hole H3 to adjust the length of the bar member 552.

[0030] When the opening / closing window unit 50 is rotated in the X1 direction around the rotation shaft 54 as the central axis to open the projection window 5, the bar member 552 fixed to the vertical frame 53 is also rotated in the X1 direction. As a result of this movement, the second axis member 553 attached to the end of the bar member 552 slides upward through the elongated hole H3, making the length of the bar member 552 longer than when the opening / closing window unit 50 is closed. These movements cause the lower frame 52 to move so as to protrude in the X1 direction by the length adjusted by the elongated hole H3, and the opening / closing window unit 50 is opened.

[0031] With this configuration, by adjusting the length of the elongated hole H3 of the friction stay 55, it is possible to adjust the angle R at which the opening / closing window 50 protrudes in the X1 direction. For example, it is possible to set the upper limit to an angle at which a child's head cannot pass, and prevent the opening / closing window 50 from opening any further, but the present disclosure is not limited to this. The elongated hole H3 can be freely configured according to the location and purpose of installing the window unit 1, and the upper limit angle at which the opening / closing window 50 opens can be freely set.

[0032] As shown in FIG. 6, the fixed window 6 is located at the bottom of the frame 2. The fixed window 6 has a fixed window section 60 and a mating fixed cover 64, and is a window that is fixed to the frame 2 and cannot be opened or closed. The fixed window section 60 has a frame 601 and fixed glass G2. The frame 601 is composed of an upper frame 61, a lower frame 62, and vertical frames 63 arranged in the left and right directions, which are framed in a substantially rectangular shape. The frame 601 is composed of a shaped member obtained by extruding a metal such as aluminum, for example, but is not limited to this. The frame 601 has a slit in the center along the longitudinal direction, and the fixed glass G2 is fixed to the frame 601 via a resin member provided in the slit.

[0033] As shown in Fig. 4, the vertical frame 63 is configured in a substantially rectangular cylindrical shape with an X1-side visible surface 63a, an outer peripheral visible surface 63b, an X2-side visible surface 63c, and an inner peripheral visible surface 63d. The FIX cover 64 is a substantially L-shaped cover material. Of the two sides that make up the L shape, one side is abutted against and fixed to the inner peripheral visible surface 23d of the vertical frame 23, and the other side is positioned so as to abut against the X1-side visible surface 63a of the vertical frame 63. As shown in Fig. 5, the fixed window portion 60 is fixed to the frame body 2 by the FIX cover 64.

[0034] As shown in FIG. 12, the stopper 7 is a fixed member attached to the fixed shaft 54b of the projection window 5, which is inserted into the second bearing member 42 provided in the vertical frame 23B. In FIG. 12, the upper frame 21 is represented by a two-dot chain line, and its shape is omitted. As shown in FIG. 7, a clearance CL4 is formed between the projection window 5 and the inner peripheral visible surface 4c. The first bearing member 41 has a protrusion 411, so it can fill the clearance CL4 by the width W1. On the other hand, as described above, the second bearing member 42 does not have a protrusion 411, so the clearance CL4 remains between the projection window 5 and the inner peripheral visible surface 4c.

[0035] The large clearance CL4 makes it easier for the projection window 5 to move left and right within the frame 2 relative to the viewing direction. Therefore, for example, when the opening and closing window 50 is opened and closed, the momentum of the opening and closing can cause the projection window 5 to move left and right, potentially damaging the frame 2. The stopper 7 has a width W1 equal to the protrusion 411 of the first bearing member 41, and is a fixing device for filling the clearance CL4. The stopper 7 is molded from a material such as resin, but the present disclosure is not limited to this.

[0036] As shown in Figure 12, the stopper 7 has a shaft gripping portion 71 and a handle portion 72. The shaft gripping portion 71 is an engaging portion that can securely grip the fixed shaft 54b and is generally C-shaped. The handle portion 72 is a linear grip. With this configuration, the handle portion 72 can be held in the hand and attached to the fixed shaft 54b by passing it through the clearance CL2 shown in Figure 3 from the X1 direction.

[0037] As shown in Figure 12, the arc shape of the shaft gripping portion 71 of the stopper 7 allows it to be rotated in the direction of arrow Z around the fixed shaft 54b. This makes it possible to easily store the stopper 7 inside the frame body 2. With this configuration, the clearance CL4 can be easily filled by the stopper 7, and movement of the projection window 5 in the left-right direction during opening and closing can be restricted, thereby improving the usability of the window unit 1.

[0038] Next, the detailed configurations of the middle frame 24 and the lower frame 22 will be described in detail with reference to the drawings. As shown in Fig. 6, the middle frame 24 is disposed midway up and down the vertical frame 23, and is formed to extend in the left-right (front) direction between the projection window 5 and the fixed window 6 that are disposed side by side up and down. Both ends of the middle frame 24 in the front direction are fixed to the vertical frame 23 with screws. As shown in Figs. 5 and 13, the middle frame 24 is a horizontal frame in the shape of a square tube, and has a main body 241, an upper extension 242, and a lower extension 243.

[0039] The main body 241 has an upper surface 241a and a lower surface 241b, and has a hollow portion formed therein. The upper extension 242 and the lower extension 243 extend to the left and right from the X2-side ends of the upper surface 241a and the lower surface 241b of the main body 241, and are bent at approximately right angles to extend upward and downward. As shown in FIG. 13, both ends of the upper extension 242 and the lower extension 243 in the front direction (left and right direction) have notches 241c. The upper extension 242 and the lower extension 243 have butt portions 241e, which are front surfaces facing the notches 241c.

[0040] As a result, as shown in Figure 5, the upper extension 242 extends upward from the upper surface 241a at the X2 side end of the main body 241, thereby providing a screening effect that shields the gap between the middle frame 24 and the bottom sill 52 of the projection window 5 from the X2 direction. Similarly, the lower extension 243 extends downward from the bottom surface 241b at the X2 side end of the main body 241, thereby providing a screening effect that shields the gap between the middle frame 24 and the top sill 61 of the fixed window 6 from the X2 direction. This configuration can improve the design of the window unit 1.

[0041] 15 and 16, the end of the sight plate 32 of the protruding cover material 3 is disposed adjacent to the abutting portion 241e of the upper extending portion 242, but it may also be disposed so that the end of the sight plate 32 abuts against the abutting portion 241e without leaving a gap. Note that the protruding window 5 is omitted in FIGS. 15 and 16. As shown in FIGS. 16 and 18, the vertical frame extending portion 231 of the vertical frame 23 is disposed outward in the viewing direction from the upper extending portion 242 and extends more inward than the cutout portion 241c.

[0042] The outer peripheral surface of the sight plate 32 is positioned so as to abut against the vertical frame extension portion 231 extending from the X2-side sight surface 23c of the vertical frame 23. The protruding cover material 3 abuts against the upper surface portion 241a of the middle frame 24, and is configured so that the inner peripheral surface of the sight plate 32 and the inner peripheral surface of the upper extension portion 242 are flush. The cutout portion 241c allows the sight plate 32 of the protruding cover material 3 and the vertical frame extension portion 231 of the vertical frame 23 to be positioned so as to abut against each other without any gaps, thereby improving the strength of the window unit 1.

[0043] 17, if the upper extension 242 does not have the cutout 241c, the upper extension 242B is formed across the entire facing direction of the middle frame 24B, resulting in a gap between the facing plate 32 of the protruding cover material 3 and the vertical frame extension 231 of the vertical frame 23. Because the gap reduces the strength of the bent member, it was necessary to insert a gap filling member P into the gap between the facing plate 32 of the protruding cover material 3 and the vertical frame extension 231 of the vertical frame 23 in order to increase the rigidity of the window unit 1.

[0044] The gap filling members P are made up of multiple small parts, which need to be inserted when the window unit 1 is installed on site, making management cumbersome and reducing the installability of the window unit 1. However, the configuration of the middle frame 24 makes it possible to maintain the rigidity of the window unit 1 without using the gap filling members P, thereby improving the installability of the window unit 1.

[0045] As shown in Fig. 6, the lower frame 22 constitutes the lower part of the frame body 2. As shown in Fig. 14, the lower frame 22 has an upper surface portion 221a and a lower surface portion 221b, and has a recess along the longitudinal direction of the upper surface portion 221a, with a cover material C provided to fill the recess. The upper surface portion 221a has an upper extension portion 222, a notch portion 221c, and an abutment portion 221e. The configuration and effects of these are the same as those of the upper extension portion 242, the notch portion 241c, and the abutment portion 241e of the middle frame 24, so a description thereof will be omitted.

[0046] As shown in Figure 18, a fixed window 6 is disposed on the upper surface 221a of the lower frame 22. The X2-side facing surface 63c of the vertical frame 63 provided on the fixed window 6 is disposed so as to be firmly abutted against the vertical frame extension portion 231 extending from the X2-side facing surface 23c of the vertical frame 23. The difference between the middle frame 24 and the lower frame 22 is that the facing plate 32 of the protruding cover material 3 in the middle frame 24 corresponds to the X2-side facing surface 63c of the vertical frame 63 in the lower frame 22, and the inner peripheral facing surface 63d is disposed so as to be adjacent to the abutting portion 221e of the upper extension portion 222. In other respects, the configurations and functional effects of the upper extension portion 222 of the lower frame 22 and the upper extension portion 242 of the middle frame 24 are identical, and therefore description thereof will be omitted.

[0047] Next, a method for constructing an L-shaped multi-window unit 10 using a window unit 1 and a mullion 8 will be described in detail with reference to the drawings. First, the structure of the mullion 8 will be described. As shown in Figures 1 and 2, the mullion 8 is a pillar used at the corner when arranging the window units 1 in an L shape. As shown in Figures 19 and 20, the mullion 8 is a rectangular cylindrical member with a hollow interior, and is made of a shaped material obtained by extruding a metal such as aluminum, for example, but not limited to, this. As shown in Figure 22, the mullion 8 has two exposed side surfaces 8a and two hidden side surfaces 8b. Note that the upper frame 21 is omitted from Figures 22 and 23.

[0048] The exposed side surface portion 8a is a side surface exposed to the outside when viewed from the X1 direction, and is formed by bending two exposed side surface portions 8a at approximately right angles, with a corner line 81 formed vertically at the connection between the two surfaces. The surface of the exposed side surface portion 8a is flat and does not have any protrusions, grooves, or through-holes. This configuration gives the appearance viewed from the X1 direction a clean and simple impression, improving the design of the L-shaped multi-window unit 10.

[0049] The shielding side surface portion 8b is shielded from the outside by the outer peripheral visible surface 23b of the vertical frame 23, and is therefore difficult to see. The two exposed side surface portions 8a are bent, and an inner corner portion 82 is formed at the connection between the two surfaces. The inner corner portion 82 is composed of a flat surface portion 821 and a curved surface portion 822, extending vertically across the shielding side surface portion 8b. The flat surface portion 821 is a plane that is bent at a substantially right angle from the two shielding side surface portions 8b toward the inside of the mullion 8. The curved surface portion 822 is a curved surface connecting the two flat surface portions 821, and the radius of the curve is not limited and may be set freely.

[0050] As shown in Figures 19 to 22, the shielding side portion 8b has a fixing recess 83 located approximately in the vertical center. The fixing recess 83 has multiple through holes, and the outer peripheral visible surface 23b of the vertical frame 23 is connected to the mullion 8 via screws. The upper and lower ends of the mullion 8 are left hollow and exposed, and are not fixed in the vertical direction. The mullion 8 is fixed to an opening formed in the building via the window unit 1, so the mullion 8 is not fixed to the opening independently. This configuration makes the installation of the L-shaped multi-window unit 10 extremely easy and reduces the amount of work required.

[0051] As shown in Figures 21 and 22, when two window units 1 are configured in an L-shape, it is extremely difficult to align the corners on the X2 side of the vertical frames 23. When constructing the L-shaped multi-window unit 10 described below, the appearance of the X1 side is prioritized, and the units are assembled based on the X1 side. As a result, there is a problem that misalignment occurs in the alignment of the corners on the X2 side due to errors in the manufacturing of each component, resulting in a very poor appearance. A clearance CL3 is formed at the corners of the two vertical frames 23, and when viewed from the X2 direction, the corner of the mullions 8 is visible through the clearance CL3.

[0052] When a corner line 81 is formed at the X2-side corner of the mullion 8, it is necessary to adjust three straight lines in the vertical direction between the corners of the two vertical frames 23 and the corner line 81 of the mullion 8. However, as mentioned above, errors and misalignments of the components on the X2 side may occur, causing the three vertical lines to be positioned unevenly, which could give the appearance of the L-shaped multi-window unit 10 when viewed from the X2 side an extremely cluttered impression. Furthermore, adjusting the alignment of the three corners is difficult, making on-site construction difficult and potentially reducing workability.

[0053] 21 and 22, the corner lines 81 are not visible at the inner corners 82 of the mullions 8, so a neat impression is given when the clearance CL3 is visible from the X2 side. Also, even when the two vertical frames 23 are positioned so that they are farther apart, thereby widening the clearance CL3, the corner lines 81 are not visible from the X2 direction, so a neat impression is maintained. This configuration improves the design of the L-shaped multiple window unit 10 and at the same time provides a fixture that is easy to install.

[0054] 22, a wrapping sheet W, indicated by a two-dot chain line, can also be attached to the surface exposed to the outside of the L-shaped multi-window unit 10. For the mullion 8, the wrapping sheet W is applied to the exposed side surface portion 8a that is exposed to the outside, but the wrapping sheet W is not applied to the shielding side surface portion 8b and the inner corner portion 82. With this configuration, the amount of wrapping sheet W used can be reduced, and construction costs can be reduced, while the appearance of the L-shaped multi-window unit 10 can be freely decorated using the wrapping sheet W.

[0055] The shape of the inner corner portion 82 is not limited to this embodiment. As shown in FIG. 23, the shape of the inner corner portion 82B may be formed by chamfering the X2-side corner of the mullion 8 and consisting of only a single flat portion. The wrapping sheet W is not applied to the inner corner portion 82B either, and since the surface of the aluminum or the like is easily visible from the clearance CL3, the inner corner portion 82B may be formed so as to be recessed as far inside the mullion 8 as possible. Furthermore, as shown in FIG. 24, the shape of the inner corner portion 82C may be formed by only a single curved portion. It is sufficient for both corner surfaces to be configured so that the corner line 81 is not visible from the clearance CL3, and the shape of the inner corner portion 82 can be modified as appropriate.

[0056] Next, we will explain the installation method for the L-shaped multi-window unit 10, but first we will explain the installation method for the window unit 1 that makes up the L-shaped multi-window unit 10. First, the frame 2 is assembled into an opening formed in the building and fixed with screws. Next, the projection window 5 and the fixed window 6 are attached to the frame 2. For the fixed window 6, the fixed window section 60 is fixed to the frame 2 using the fix cover 64 as described above.

[0057] The method of installing the projection window 5 will now be explained. As shown in Figure 25, the projection cover material 3 and the bearing material 4 are fixed to the two vertical frames 23 in advance. In Figure 25, the upper frame 21 is represented by a two-dot chain line, and its shape is omitted. The projection cover material 3 is a common component except for the installation direction, but the bearing material 4 comes in two types with different shapes. A first bearing material 41 is provided on the vertical frame 23A, and a second bearing material 42 is provided on the vertical frame 23B.

[0058] Next, the projection window 5 is attached to the frame body 2 from the X1 direction. Since the projection window 5 is installed so as to project in the X1 direction, it is attached in an orientation such that the movable shaft 54a of the rotating shaft 54 corresponds to the first bearing member 41 and the fixed shaft 54b corresponds to the second bearing member 42. First, the fixed shaft 54b is inserted into the through-hole 4h of the second bearing member 42. After the fixed shaft 54b has been inserted, the projection window 5 is rotated in the direction of the arrow, and the movable shaft 54a is inserted into the through-hole 4h of the first bearing member 41.

[0059] As shown in Figures 8 and 25, the movable shaft 54a is placed on the protrusion 411 of the first bearing member 41. The movable shaft 54a has a movable end 541 that expands and contracts due to a spring, allowing it to be shortened by the dimension D1. With this configuration, the movable end 541 abuts against the recess 4d provided on the inner peripheral projecting surface 4c of the first bearing member 41, shortening the length of the movable shaft 54a and allowing the movable shaft 54a to slide along the inclined surface 411a. Furthermore, the inclination angles of the first inclined surface S1 and the second inclined surface S2 provided on the recess 4d gradually widen the opening of the recess 4d in the X direction. This allows the movable end 541 to easily abut against the recess 41. With this configuration, the movable shaft 54a is guided into the through-hole 4h by sliding, allowing the movable shaft 54a to be easily inserted into the through-hole 4h of the first bearing member 41, improving installation workability during the projection window 5 installation.

[0060] After the rotating shaft 54 is inserted and fixed into the vertical frame 23, the fixing members 554 of the two friction stays 55 are fixed to the inner peripheral visible surface 23d of the vertical frame 23 via the spacers 34, as shown in Figure 11. Finally, as shown in Figure 12, the stopper 7 is inserted onto the fixing shaft 54b of the projection window 5 that is inserted into the second bearing member 42, and the assembly of the window unit 1 is completed.

[0061] Next, a method for constructing an L-shaped multi-window unit 10 will be described. As shown in FIGS. 1 and 2, the L-shaped multi-window unit 10 is constructed by connecting the vertical frames 23A and 23B of the window unit 1. A mullion 8 is used at the corner, and as shown in FIGS. 23 and 22, the shielding side portion 8b of the mullion 8 is connected to the vertical frame 23 of the window unit 1 with screws to form an L-shaped corner. First, multiple frame bodies 2 and mullions 8 are connected, and the upper and lower frames 21 and 22 are fixed with screws to an opening formed in the building to form an L-shaped frame body. The order in which the upper and lower frames 21 and 22, the vertical frames 23, and the mullions 8 are connected is not limited. As long as the frame bodies 2 are connected to form an L-shape, the frame body can be assembled using any work procedure.

[0062] After assembling the frame, the window unit 1 is assembled as described above. If the projection window 5 is mistakenly installed so that it protrudes in the X2 direction, the protruding opening / closing window sections 50 may come into contact with each other, so it is desirable to carefully check the installation direction so that the projection window 5 protrudes in the X1 direction.

[0063] Furthermore, when removing the projection window 5 from the frame 2, the procedure is reversed from the above-described installation procedure. First, the movable end 541 of the movable shaft 54a is retracted, and the movable shaft 54a is removed in the X1 direction from the through-hole 4h of the first bearing member 41. Even if the removed movable shaft 54a is accidentally released, as shown in FIG. 8, the arc-shaped retaining portion 411b prevents the movable shaft 54a from sliding down the inclined surface 411a, preventing the projection window 5 from falling during the removal process. The projection window 5 can be removed from the frame 2 by first removing the movable shaft 54a and then removing the fixed shaft 54b from the through-hole 4h of the second bearing member 42. Note that the stopper 7 and friction stay 55 are assumed to have been removed from the frame 2 in advance.

[0064] According to the above-described method for installing the L-shaped multi-window unit 10, it is possible to reduce the number of steps and easily assemble the L-shaped multi-window unit 10. In addition, the installation of the projection window 5 is improved, and the projection window 5 can be installed and removed from the frame 2 with just a simple procedure.

[0065] The present disclosure is not limited to the above-described embodiments and can be modified as appropriate.

[0066] For example, in this embodiment, as shown in Figures 1 and 2, an L-shaped continuous window unit 10 is constructed using five window units 1 and one mullion 8, but the construction of the L-shaped continuous window unit is not limited to this. There is no limit to the number of window units 1 and mullions 8, and the unit may be constructed in any form. Also, a continuous window unit in an I-shape may be constructed using only window units 1, without using mullions 8.

[0067] Furthermore, although the window unit 1 of this embodiment has a projection window 5 on the upper level and a fixed window 6 on the lower level, the configuration of the window unit 1 is not limited to this. The upper and lower positions of the projection window 5 and the fixed window 6 may be interchanged, or a window unit made up of only projection windows 5 or only fixed windows 6 may be used. Furthermore, a continuous window unit may be made up of window units of various configurations.

[0068] The window unit 1 of this embodiment can also be installed in an indoor space. For example, a workroom can be set up in a corner of the living room, and the L-shaped multi-window unit 10 can be installed on the wall separating the living room and workroom. This creates a sense of unity between the living room and workroom, allowing people to feel each other's presence while maintaining their own private space. The L-shaped multi-window unit 10 also allows light to enter from the living room, improving the lighting in the workroom. Even if the workroom does not have a ventilation window, opening the projection window 5 can improve ventilation in the workroom and allow clean air to enter.

[0069] [Aspect 1] A pair of frames; A shoji screen attached to the frame body; A fixture comprising a mullion connecting the pair of frame bodies in an L-shape in plan view, The mullion has a pair of side surfaces connected to the vertical frame of the frame body and shielded, A fitting in which the inner corner portion formed by connecting the pair of side portions is composed of a curved portion and / or a flat portion. [Aspect 2] The inner corner portion is composed of two flat portions and a curved portion, The two planar portions are formed by planes extending inward of the mullion, The fitting according to aspect 1, wherein the curved surface portion is formed by a curved surface connecting the two flat surfaces. [Aspect 3] The fitting according to aspect 1, wherein the inner corner portion is composed of only one flat portion formed by chamfering. [Aspect 4] The fitting according to aspect 1, wherein the inner corner portion is composed of only one curved surface portion. [Aspect 5] The fixture further includes a decorative sheet covering the frame and the mullions, The fitting according to any one of aspects 1 to 4, wherein the decorative sheet is not provided on the inner corner portion. [Aspect 6] 6. The fitting according to claim 1, wherein the fitting is installed indoors. [Explanation of symbols]

[0070] 10 Door and window, 2 Frame, 5 Projection window (Shoji), 6 FIX window (Shoji), 8 Mullion, 23 Vertical frame, 8b Shielding side part (side part), 82, 82B, 82C Inner corner part, 822 Curved part, 821 Flat part, W Wrapping sheet (decorative sheet)

Claims

1. A pair of frames; A shoji screen attached to the frame body; A fixture comprising: a mullion connecting the pair of frame bodies in an L-shape in plan view; The mullion has a pair of side surfaces connected to the vertical frame of the frame body and shielded, The interior corner portion formed by connecting the pair of side portions is composed of a curved portion and / or a flat portion.

2. The inner corner portion is composed of two flat portions and a curved portion, The two planar portions are formed by planes extending inward of the mullion, The fixture according to claim 1 , wherein the curved surface portion is formed by a curved surface connecting the two flat surfaces.

3. The fixture according to claim 1, wherein the inner corner portion is composed of only one flat portion formed by chamfering.

4. The fixture according to claim 1 , wherein the inner corner portion is composed of only one curved surface portion.

5. The fixture further includes a decorative sheet covering the frame and the mullions, The fixture according to claim 1 , wherein the decorative sheet is not provided on the inner corner portion.

6. The fixture according to any one of claims 1 to 5, which is installed indoors.

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