Revolving door

Abstract

To improve stability of a sash of a revolving door by stably supporting the sash with a support member.SOLUTION: A revolving door 5 comprises: a vertical member 30; a sash 40 that is rotatably mounted on the vertical member 30 to open / close; and a support member 50 that supports the sash 40. The vertical member 30 has a rotary shaft part 33 extending in a longer direction of the vertical member 30. The sash 40 has an engaging part 44 that rotatably engages with the rotary shaft part 33. The support member 50 includes a fixed part 51 fixed on the vertical member 30 and a placing part 54 on which the engaging part 44 is placed.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a pivoting door that supports a sash by means of a support member attached to a vertical member. [Background technology]

[0002] A known example of a pivoting door that supports a shoji screen with a support member is a pivoting door attached to the vertical frame of a curtain wall unit. The shoji screen and the support member are attached to the vertical frame, which is a vertical member, and the shoji screen is supported by the support member to pivot. A conventional door opening and closing device that includes a door body rotatably connected to an opening frame and an opening restriction member attached to the opening frame is also known as a pivoting door (see Patent Document 1).

[0003] In the conventional door opening and closing device described in Patent Document 1, when the door body, which is a sash, rotates to the restricted position, the abutment portion of the sash abuts on the abutment piece of the open restricting member, restricting the rotation of the door body. In addition, the arc-shaped door side extension piece of the door body is received by the plate-shaped door receiving piece of the open restricting member, and the door body is supported by the open restricting member, which is a support member. However, the door receiving piece of the open restricting member is disposed intersecting with the door side extension piece of the door body, and supports the door side extension piece of the door body only at the point where it intersects with the door side extension piece. Therefore, in the conventional door opening and closing device, the area of ​​the part of the open restricting member that supports the door body is limited, and there is room for improvement in terms of improving the stability of the support of the door body by the open restricting member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6469541 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made in consideration of the above-mentioned problems in the conventional art, and its object is to stably support the sash of a pivoting door with a support member, thereby improving the stability of the sash. [Means for solving the problem]

[0006] The present invention relates to A pivoting door comprising a vertical member, a sash that is pivotally attached to the vertical member and opens and closes, and a support member that supports the sash, The vertical member has a pivot shaft portion extending in a longitudinal direction of the vertical member, The shoji screen has an engagement portion that rotatably engages with the pivot shaft portion, The support member is a pivot door having a fixing portion that is fixed to the vertical member and a support portion on which the engagement portion is placed. Effect of the Invention

[0007] According to the present invention, the sash of a pivoting door can be stably supported by the support member, thereby improving the stability of the sash. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a front view showing the curtain wall of the first embodiment. [Diagram 2] FIG. 2 is a vertical cross-sectional view showing the curtain wall of the first embodiment. [Diagram 3] FIG. 2 is a cross-sectional view showing the curtain wall of the first embodiment. [Figure 4] FIG. 2 is a front view showing the curtain wall unit of the first embodiment. [Diagram 5] FIG. 2 is a cross-sectional view showing a portion of the curtain wall unit of the first embodiment. [Figure 6] FIG. 2 is a cross-sectional view showing a vertical frame and a pivot door of the first embodiment. [Figure 7] FIG. 2 is a perspective view showing a vertical frame and a pivot door of the first embodiment. [Figure 8] FIG. 2 is a perspective view showing a vertical member of the pivot door of the first embodiment. [Figure 9]FIG. 2 is a perspective view showing the sash and support member of the pivot door of the first embodiment. [Figure 10] 7 is a vertical cross-sectional view showing the pivot door of the first embodiment taken along the line X3-X3 in FIG. 6. [Figure 11] 11 is a cross-sectional view showing the pivot door taken along the line X4-X4 in FIG. 10. [Figure 12] 11 is a cross-sectional view showing the pivot door taken along the line X5-X5 in FIG. 10. [Figure 13] FIG. 11 is a perspective view showing a pivot door of a second embodiment. [Figure 14] FIG. 11 is a perspective view showing a vertical member of a pivot door according to a second embodiment. [Figure 15] FIG. 11 is a perspective view showing the screen and support member of the pivot door of the second embodiment. [Figure 16] 14 is a cross-sectional view showing the pivot door taken along the line X6-X6 in FIG. 13. [Figure 17] 14 is a cross-sectional view showing the pivot door taken along the line X7-X7 in FIG. 13. [Figure 18] 14 is a cross-sectional view showing the pivot door taken along the line X8-X8 in FIG. 13. [Figure 19] FIG. 11 is a perspective view showing a pivot door of a third embodiment. [Figure 20] FIG. 11 is a perspective view showing a vertical member of a pivot door according to a third embodiment. [Figure 21] FIG. 11 is a perspective view showing the screen and support member of the pivot door of the third embodiment. [Figure 22] 13 is a vertical cross-sectional view showing a pivot door of a third embodiment. [Figure 23] FIG. 11 is a cross-sectional view showing a pivot door of the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of a pivot door of the present invention will be described with reference to the drawings. The pivot door of this embodiment is a door structure with a pivotable shoji screen, which opens and closes by pivoting the shoji screen. Three embodiments of the pivot door will be described below using a pivot door installed in a curtain wall unit as an example. The curtain wall unit is used in the curtain wall of a building and is installed on the exterior wall of the building. Furthermore, multiple curtain wall units are combined with each other to form a part of the curtain wall.

[0010] (First embodiment) Fig. 1 is a front view showing the curtain wall 1 of the first embodiment, showing a part of the curtain wall 1 installed in a building 10 as viewed from the outdoor side. Fig. 2 is a vertical cross-sectional view showing the curtain wall 1 of the first embodiment, showing the curtain wall 1 and a part of the building 10 cut along the line X1-X1 in Fig. 1. Fig. 3 is a horizontal cross-sectional view showing the curtain wall 1 of the first embodiment, showing the curtain wall 1 cut along the line X2-X2 in Fig. 1.

[0011] As shown in the figure, a building 10 comprises a curtain wall 1 and a skeleton 11. The curtain wall 1 also comprises a plurality of curtain wall units 2, 3A to 3M including the curtain wall unit 2 of the first embodiment. The curtain wall units 2, 3A to 3M are units that constitute the curtain wall 1, and are pre-assembled before installation on the building 10. The curtain wall 1 and the curtain wall units 2, 3A to 3M are disposed on the outdoor side of the skeleton 11 of the building 10 and attached to the skeleton 11 of the building 10.

[0012] The curtain wall 1 and the curtain wall units 2, 3A to 3M are installed in locations on the exterior wall 12 of the building 10 to form the exterior wall 12 of the building 10. The curtain wall units 2, 3A to 3M are installed side by side on the building 10 and are combined with the adjacent curtain wall units 2, 3A to 3M, respectively.

[0013] FIG. 4 is a front view showing the curtain wall unit 2 of the first embodiment, illustrating a schematic configuration of the curtain wall unit 2 as viewed from the outdoor side. As shown in the figure, the curtain wall unit 2 comprises four panel bodies 2A to 2D and a frame body 4 that surrounds the panel bodies 2A to 2D. The frame body 4 is a rectangular opening frame, and is attached to a framework 11 of a building 10. The panel bodies 2A to 2D are rectangular glass panel bodies (for example, plate glass, double glazing, or laminated glass) and are held by the frame body 4.

[0014] The frame body 4 has four interlocking frames 20-23 (upper frame 20, lower frame 21, and a pair of vertical frames 22, 23), a vertical rib 24, and a crossbeam 25, which form four rectangular openings 4A-4D. The frames 20-23, vertical ribs 24, and crossbeam 25 of the frame body 4 are frame materials (frame constituent materials) that make up the frame body 4, and are each made of a metal (e.g., aluminum alloy) shaped material formed by extrusion molding.

[0015] The upper frame 20, the lower frame 21, and the crossbeam 25 are horizontal members extending in the horizontal direction (left-right direction), while the pair of vertical frames 22, 23 and the vertical backbone 24 are vertical members extending in the vertical direction (up-down direction). The upper frame 20 and the lower frame 21 are located at the upper and lower parts of the frame body 4, and the pair of vertical frames 22, 23 are located on the left and right sides of the frame body 4. The ends of the upper frame 20, the lower frame 21, and the pair of vertical frames 22, 23 are connected to each other to form the frames 20-23.

[0016] The vertical rib 24 is located between a pair of vertical frames 22, 23 and connected to the upper frame 20 and the lower frame 21. The vertical rib 24 is installed between the upper frame 20 and the lower frame 21 to divide the inside of the frame body 4 (openings 4A to 4D) into left and right. The crossbeam 25 is located between the upper frame 20 and the lower frame 21, and is located between each of the pair of vertical frames 22, 23 and the vertical rib 24 to connect the vertical frames 22, 23 and the vertical rib 24. The crossbeam 25 is installed between the vertical frames 22, 23 and the vertical rib 24 to divide the inside of the frame body 4 (openings 4A to 4D) into upper and lower. The panel bodies 2A to 2D are arranged in the openings 4A to 4D of the frame body 4, and are held by the frames 20 to 23, the vertical rib 24, and the crossbeam 25 of the frame body 4 to be fixed to the frame body 4.

[0017] Fig. 5 is a cross-sectional view showing a portion of the curtain wall unit 2 of the first embodiment, and shows an enlarged portion of Fig. 3. Fig. 5 also shows a portion of the curtain wall unit 2 on one vertical frame 22 side and a portion of another curtain wall unit 3C adjacent to the curtain wall unit 2.

[0018] As shown in the figure, the vertical frame 22 of the curtain wall unit 2 has a holding portion 26 that holds the panel body 2C, and two storage portions 27. The two storage portions 27 are provided adjacent to each other inside the vertical frame 22, and each store a lighting device 28. The lighting device 28 is disposed inside the storage portion 27 and attached to the storage portion 27. Light generated by the lighting device 28 passes through a transmission portion formed in the vertical frame 22, and is irradiated from the inside of the storage portion 27 toward the outside of the vertical frame 22.

[0019] The curtain wall unit 2 includes two pivot doors 5 provided on the vertical frame 22. The pivot doors 5 are provided on the entire longitudinal direction (up-down direction) of the vertical frame 22, on a part of the longitudinal direction of the vertical frame 22, or at multiple locations of the longitudinal direction of the vertical frame 22. Here, the pivot doors 5 are provided over the entire longitudinal direction of the vertical frame 22. The pivot doors 5 are provided in each of the two storage sections 27 of the vertical frame 22 and are used for maintenance of the lighting devices 28 in the storage sections 27. The storage sections 27 of the vertical frame 22 have openings 29 that open toward the outside of the vertical frame 22. The pivot doors 5 are provided at the locations of the openings 29 of the storage sections 27 and open and close the openings 29 of the storage sections 27. The storage sections 27 (openings 29) of the vertical frame 22 are opened by opening the pivot doors 5 during maintenance of the lighting devices 28, and are closed by closing the pivot doors 5 after the maintenance of the lighting devices 28 is completed.

[0020] Fig. 6 is a cross-sectional view showing the vertical frame 22 and the pivot door 5 of the first embodiment, and shows the vertical frame 22 without illustrating the lighting device 28 in the storage section 27. Fig. 6 also shows a mirror image of the curtain wall unit 2 shown in Fig. 5 so that the opening and closing direction of the pivot door 5 matches the opening and closing direction of the pivot door 5 of the second embodiment described below. Fig. 7 is a perspective view showing the vertical frame 22 and the pivot door 5 of the first embodiment, and shows one of the two pivot doors 5 shown in Fig. 6. Fig. 7 shows a portion of the vertical frame 22 and the pivot door 5 in the up-down direction.

[0021] As shown in the figure, the pivot door 5 comprises a vertical member 30 which is the base of the pivot door 5, a shoji screen 40 which is pivotally attached to the vertical member 30, and a support member 50 which supports the shoji screen 40. Here, the vertical member 30, the shoji screen 40, and the support member 50 are each made of a metal (e.g., aluminum alloy) shaped member formed by extrusion molding. The vertical member 30 is the vertical frame 22 of the curtain wall unit 2, and supports the shoji screen 40 so that it can pivot. The longitudinal direction of the vertical member 30 is the up-down direction, and the vertical member 30 extends in the up-down direction. The shoji screen 40 is a pivotable door body which opens and closes by pivoting.

[0022] The support member 50 is a part (support part) that supports the shoji 40 so that it can be rotated (opened and closed), and is attached to the vertical member 30. The support member 50 is provided at multiple locations (for example, two locations at the top and bottom, and three locations at the top, middle, and bottom) in the longitudinal direction (vertical direction) of the vertical member 30, or at one location. Here, the support member 50 is provided at multiple locations in the longitudinal direction of the vertical member 30, and the shoji 40 is supported by multiple support members 50. In addition, in FIG. 6, the shoji 40 in an open state is shown by a two-dot chain line, and in FIG. 7, a part in the vertical direction of the pivot door 5 including one support member 50 is shown. In addition, the two pivot doors 5 shown in FIG. 6 are configured similarly to each other. Therefore, hereinafter, one of the pivot doors 5 shown in FIG. 7 will be described.

[0023] Fig. 8 is a perspective view showing the vertical member 30 of the pivot door 5 of the first embodiment, and Fig. 9 is a perspective view showing the screen 40 and the support member 50 of the pivot door 5 of the first embodiment. Fig. 10 is a vertical cross-sectional view showing the pivot door 5 of the first embodiment taken along line X3-X3 in Fig. 6, in which the vertical member 30, the screen 40, and the support member 50 are shown with a portion of the screen 40 omitted.

[0024] As shown in Fig. 7 to Fig. 10, the vertical member 30 has a receiving portion 31 that receives the shoji screen 40, an attachment portion 32 to which the support member 50 is attached, a pivot shaft portion 33 to which the shoji screen 40 is pivotally attached, and a notch portion 34 cut into the pivot shaft portion 33. The shoji screen 40 also has a plate-shaped panel portion 41, a door end portion 42 located on the door end side, a hanging base portion 43 located on the hanging base side, an engagement portion 44 that pivotally engages with the pivot shaft portion 33 of the vertical member 30, a notch portion 45 cut into the engagement portion 44, and a connection portion 46 that connects the panel portion 41 and the engagement portion 44. Each portion 31 to 34 of the vertical member 30 and each portion 41 to 46 of the shoji screen 40 extend in the longitudinal direction of the vertical member 30.

[0025] The shoji screen 40 opens and closes by rotating between a fully open position and a fully closed position. The fully open position is the position that the shoji screen 40 is located in when it is fully open, and the fully closed position is the position that the shoji screen 40 is located in when it is fully closed. When opening and closing, the shoji screen 40 rotates to the fully open position and the fully closed position and is located in the fully open position and the fully closed position. The receiving portion 31 of the vertical member 30 is located on the door tip portion 42 side of the shoji screen 40 in the fully closed position, and the door tip portion 42 of the shoji screen 40 is located along the receiving portion 31. When the shoji screen 40 is closed, the door tip portion 42 abuts against the receiving portion 31 and the shoji screen 40 stops in the fully closed position.

[0026] The mounting portion 32, the pivot portion 33, and the notch portion 34 of the vertical member 30 are located on the side of the hanging portion 43 of the shoji screen 40 in the fully closed position, and the hanging portion 43 of the shoji screen 40 is disposed along the mounting portion 32, the pivot portion 33, and the notch portion 34. The mounting portion 32 is a plate-shaped wall portion (mounting wall portion), and the mounting portion 32 and the pivot portion 33 are formed with a gap between them. The pivot portion 33 is located between the mounting portion 32 and the panel portion 41 of the shoji screen 40, and extends in the longitudinal direction of the vertical member 30. The pivot portion 33 is a protruding piece that protrudes toward the shoji screen 40, and the cross-sectional shape of the pivot portion 33 in a cross section perpendicular to the longitudinal direction of the vertical member 30 is formed in a semicircular shape.

[0027] The vertical member 30 has upper and lower pivot shafts 33 spaced apart in the longitudinal direction of the vertical member 30. The upper pivot shaft 33 is located above the notch 34, and the lower pivot shaft 33 is located below the notch 34. The pivot shafts 33 above and below the notch 34 (the upper pivot shaft 33 and the lower pivot shaft 33) are provided on the vertical member 30 with the notch 34 between them. The notch 34 is a void portion located between the upper and lower pivot shafts 33. A part of the pivot shaft 33 in the longitudinal direction of the vertical member 30 is cut out and removed, and the notch 34 is formed in a part of the pivot shaft 33 in the longitudinal direction of the vertical member 30.

[0028] The panel portion 41 of the shoji screen 40 is the main body of the shoji screen 40, and covers the opening of the vertical member 30, which is the opening 29 of the storage section 27, to close the opening of the vertical member 30. The door edge portion 42 is the part on the door edge side of the shoji screen 40, and includes the door edge side ends of the shoji screen 40 and the panel portion 41. The hanging base portion 43 is the part on the hanging base side of the shoji screen 40, and includes the hanging base side ends of the shoji screen 40 and the panel portion 41. The engagement portion 44 is a protrusion that protrudes toward the vertical member 30, and the cross-sectional shape of the engagement portion 44 in a cross section perpendicular to the longitudinal direction of the vertical member 30 is formed in an arc shape. The engagement portion 44 has an engagement groove portion 47 that can engage with the pivot shaft portion 33 of the vertical member 30, and is provided in the hanging base portion 43 of the shoji screen 40.

[0029] The shoji screen 40 has upper and lower engagement parts 44 spaced apart in the longitudinal direction of the vertical member 30. The upper engagement part 44 is located above the notch part 45, and the lower engagement part 44 is located below the notch part 45. The upper and lower engagement parts 44 (the upper engagement part 44 and the lower engagement part 44) of the notch part 45 are provided on the shoji screen 40 with the notch part 45 between them. The notch part 45 is a void part located between the upper and lower engagement parts 44. A part of the engagement part 44 in the longitudinal direction of the vertical member 30 is cut out and removed, and the notch part 45 is formed in a part of the engagement part 44 in the longitudinal direction of the vertical member 30. The connection part 46 is formed from the panel part 41 to the engagement part 44, and is located between the panel part 41 and the engagement part 44. At the location of the notch 45 , the connection portion 46 is not connected to the engagement portion 44 , and the end of the connection portion 46 located on the engagement portion 44 side faces the notch 45 .

[0030] The notch 34 of the vertical member 30 and the notch 45 of the screen 40 are each placement spaces for the support member 50, and are located at the same position in the longitudinal direction of the vertical member 30. The support member 50 is placed in the notch portions 34, 45 when attached to the mounting portion 32 of the vertical member 30, and protrudes from the mounting portion 32 toward the screen 40. The support member 50 also has a fixing portion 51 fixed to the vertical member 30, a support portion 52 protruding from the fixing portion 51 toward the screen 40, and a restricting portion 53 that restricts the rotation of the screen 40.

[0031] The fixing portion 51 of the support member 50 is fixed to the mounting portion 32 of the vertical member 30, and the fixing portion 51 and the support member 50 are attached to the mounting portion 32 and the vertical member 30. The fixing portion 51 abuts against the mounting portion 32 of the vertical member 30, and is fixed to the mounting portion 32 and the vertical member 30 by a fastener 60 (see FIG. 10). The fastener 60 is a screw (e.g., a bolt), which penetrates the fixing portion 51 and the mounting portion 32 from the shoji 40 side and is attached to the back panel 61.

[0032] The cross-sectional shape of the support part 52 in a cross section perpendicular to the longitudinal direction of the vertical member 30 is formed in a fan shape. The support part 52 is disposed in the notch part 34 of the vertical member 30 and the notch part 45 of the shoji screen 40, and is located between the upper and lower pivot shaft parts 33 of the notch part 34 and between the upper and lower engagement parts 44 of the notch part 45 in the longitudinal direction of the vertical member 30. The support part 52 supports the engagement part 44 of the shoji screen 40 located above the notch part 45 and the support part 52, and is supported by the pivot shaft part 33 of the vertical member 30 located below the notch part 34 and the support part 52. The restricting part 53 is formed at the end part of the support part 52 located on the shoji screen 40 side, and protrudes toward the shoji screen 40.

[0033] FIG. 11 is a cross-sectional view of the pivot door 5 taken along line X4-X4 in FIG. 10, showing the pivot door 5 at the location where the support member 50 is not present. FIG. 12 is a cross-sectional view of the pivot door 5 taken along line X5-X5 in FIG. 10, showing the pivot door 5 at the location where the support member 50 is present. FIG. 11A and FIG. 12A show the shoji screen 40 in the fully closed position, and FIG. 11B and FIG. 12B show the shoji screen 40 in the fully open position. In FIG. 11 and FIG. 12, the door end portion 42 side of the shoji screen 40 is omitted. In FIG. 12, the engagement portion 44 of the shoji screen 40 located above the support portion 52 of the support member 50 and the pivot shaft portion 33 of the vertical member 30 located below the support portion 52 of the support member 50 are shown by dashed lines.

[0034] As shown in the figure, the pivot shaft portion 33 of the vertical member 30 is inserted into the engagement groove portion 47 of the engagement portion 44 of the shoji screen 40, and is disposed inside the engagement groove portion 47 and the engagement portion 44. As a result, the engagement portion 44 fits around the pivot shaft portion 33, engages with the pivot shaft portion 33, and is rotatably held by the pivot shaft portion 33. The engagement portion 44 rotates around the pivot shaft portion 33 while maintaining a state of being engaged with the pivot shaft portion 33. The shoji screen 40 rotates in a pivot direction around the pivot shaft portion 33. The pivot direction of the shoji screen 40 is the opening and closing direction of the shoji screen 40, and one direction and the other direction in the pivot direction of the shoji screen 40 are the opening direction and the closing direction in the opening and closing direction of the shoji screen 40. The opening direction is the pivot direction of the shoji screen 40 when the shoji screen 40 opens, and the closing direction is the pivot direction of the shoji screen 40 when the shoji screen 40 closes. The shoji screen 40 opens and closes by rotating in an opening direction and a closing direction.

[0035] When the screen 40 is closed (when the screen 40 is in the fully closed position), the support member 50 and the fixing device 60 are disposed between the screen 40 and the vertical member 30 and are covered by the screen 40 (see FIG. 12A). The screen 40 positions the support member 50 and the fixing device 60 between the screen 40 and the vertical member 30, and covers and shields the support member 50 and the fixing device 60 on the outside side of the vertical member 30. When the screen 40 is opened (when the screen 40 is in the fully open position), the support member 50 including the fixing portion 51 and the fixing device 60 are exposed without being covered by the screen 40 (see FIG. 12B). When attaching the support member 50 to the vertical member 30, the screen 40 is opened, the support member 50 is disposed at the notches 34 and 45, and the fixing portion 51 of the support member 50 is abutted against the mounting portion 32 of the vertical member 30. In this state, the fixing portion 51 of the support member 50 is fixed to the mounting portion 32 of the vertical member 30 by the fixing device 60, and the support member 50 is attached to the vertical member 30.

[0036] The support member 50 has a rest portion 54 and a placing portion 55 provided on the support portion 52. The rest portion 54 and the placing portion 55 are integrally provided on the support portion 52 and constitute a part of the support portion 52. The rest portion 54 is provided on the upper surface of the support portion 52 and is arranged in the notch portion 45 of the shoji screen 40, which is the arrangement space. The placing portion 55 is provided on the lower surface of the support portion 52 and is arranged in the notch portion 34 of the vertical member 30, which is the arrangement space. In the vertical direction, the rest portion 54 is arranged between the upper and lower engagement portions 44 of the shoji screen 40 and is located below the upper engagement portion 44. In addition, the placing portion 55 is arranged between the upper and lower rotation shaft portions 33 of the vertical member 30 and is located above the lower rotation shaft portion 33. The upper engagement portion 44 of the screen 40 is located above the placed portion 54, and the lower pivot shaft portion 33 of the vertical member 30 is located below the placing portion 55. The engagement portion 44 of the screen 40 engages with the pivot shaft portion 33 of the vertical member 30 at the upper and lower sides of the support portion 52 including the placed portion 54 and the placing portion 55 of the support member 50.

[0037] Of the upper and lower engaging portions 44 of the shoji screen 40, the upper engaging portion 44 (the engaging portion 44 located above the placed portion 54) is placed on the placed portion 54 from above and is rotatably supported by the placed portion 54. In this manner, the placed portion 54 is a receiving portion that receives the engaging portion 44 of the shoji screen 40, and the engaging portion 44 is placed below the engaging portion 44. The supporting member 50 rotatably supports the engaging portion 44 and the shoji screen 40 below the engaging portion 44 by the placed portion 54 and the supporting portion 52. By placing the engaging portion 44 on the placed portion 54, the engaging portion 44 and the shoji screen 40 are positioned in the longitudinal direction (up-down direction) of the vertical member 30, and the positions of the engaging portion 44 and the shoji screen 40 in the longitudinal direction of the vertical member 30 are maintained.

[0038] The mounting portion 55 is placed from above on the lower pivot shaft portion 33 (the pivot shaft portion 33 located below the mounting portion 55) of the upper and lower pivot shaft portions 33 of the vertical member 30, and is supported by the pivot shaft portion 33. The vertical member 30 supports the mounting portion 55, the support portion 52, and the support member 50 by the pivot shaft portion 33 below the mounting portion 55. By placing the mounting portion 55 on the pivot shaft portion 33, the mounting portion 55 and the support member 50 are positioned in the longitudinal direction (up-down direction) of the vertical member 30, and the positions of the mounting portion 55 and the support member 50 in the longitudinal direction of the vertical member 30 are maintained.

[0039] The regulating portion 53 of the support member 50 is formed at the end of the support portion 52 and the placed portion 54 located on the shoji 40 side, and protrudes from the support portion 52 and the placed portion 54 toward the shoji 40. The shoji 40 has an abutting portion 48 that abuts against the regulating portion 53 to stop the rotation of the shoji 40 in the opening direction. The abutting portion 48 is an end of the connection portion 46 facing the cutout portion 45 of the shoji 40, and is disposed opposite the support portion 52 and the placed portion 54. As the shoji 40 rotates in the rotation direction (opening direction, closing direction), the abutting portion 48 moves along the support portion 52 and the placed portion 54. In addition, when the shoji 40 rotates in the opening direction toward the fully open position between the fully open position and the fully closed position and rotates to the fully open position (see FIG. 12B), the abutting portion 48 abuts against and gets caught on the regulating portion 53, and stops together with the shoji 40. When the abutment portion 48 abuts against the regulating portion 53, the rotation of the shoji screen 40 in the opening direction is stopped and the shoji screen 40 stops in the fully open position.

[0040] The restricting portion 53 of the support member 50 protrudes from the support portion 52 and the resting portion 54 and is disposed at a position where it can abut against the abutting portion 48 of the screen 40, and restricts the rotation of the screen 40 in the opening direction by abutting against the abutting portion 48. The restricting portion 53 also stops the screen 40 at the fully open position and restricts the opening angle of the screen 40. The abutting of the abutting portion 48 against the restricting portion 53 limits the opening angle of the screen 40, and prevents the screen 40 from rotating to an opening angle where the engaging portion 44 of the screen 40 is disengaged from the pivot shaft portion 33 of the vertical member 30. This prevents the engaging portion 44 from disengaging from the pivot shaft portion 33, keeps the engaging portion 44 engaged with the pivot shaft portion 33, and prevents the screen 40 from falling off the pivot shaft portion 33.

[0041] In the pivot door 5 described above, the engagement portion 44 of the screen 40 is rotatably received by the rest portion 54 of the support member 50 fixed to the vertical member 30, and the screen 40 can be stably supported by the support member 50. The rest portion 54 also stably supports the screen 40 at the center of rotation, allowing the screen 40 to rotate in a stable state. This improves the stability of the screen 40 when opening, closing, and stopping. The support member 50 can be easily processed, and the screen 40 can be easily supported by the support member 50 to be rotatably moved.

[0042] The placement portion 55 of the support member 50 is supported by the pivot shaft portion 33 of the vertical member 30, and the support member 50 can be stably positioned at a position that supports the engagement portion 44 of the shoji screen 40. Therefore, the support member 50 can support the shoji screen 40 more stably. When the shoji screen 40 is closed, the support member 50 and the fixing device 60 are covered by the shoji screen 40, suppressing exposure of the support member 50 and the fixing device 60, improving the design of the pivot door 5. The restricting portion 53 of the support member 50 and the abutting portion 48 of the shoji screen 40 restrict the rotation of the shoji screen 40 in the opening direction, limiting the opening angle of the shoji screen 40, and preventing the engagement portion 44 of the shoji screen 40 from coming off the pivot shaft portion 33 of the vertical member 30.

[0043] The placing portion 55 of the support member 50 does not have to be placed on the pivot shaft portion 33 of the vertical member 30. In this case, the placing portion 55 is not provided on the support portion 52 of the support member 50, and only the placed portion 54 is provided on the support portion 52. The pivot shaft portion 33 of the vertical member 30 and the engagement portion 44 of the screen 40 are positioned at least above (only the upper side, or both the upper side and the lower side) the support portion 52 and the placed portion 54 of the support member 50. Therefore, the pivot shaft portion 33 of the vertical member 30 and the engagement portion 44 of the screen 40 may be provided only on the upper side of the support portion 52 and the placed portion 54 of the support member 50.

[0044] The pivot door 5 is not limited to a pivot door for maintenance, but may be a pivot door for other purposes (for example, a ventilation door). Furthermore, the present invention is not limited to the pivot door 5 provided in the curtain wall unit 2, but may be applied to various pivot doors. Therefore, the vertical member 30 may be a vertical member other than the vertical frame 22 of the curtain wall unit 2.

[0045] Second embodiment Next, the pivot door 5 of the second embodiment will be described. Regarding the pivot door 5 of the second embodiment, the description of the same matters as those of the pivot door 5 of the first embodiment will be omitted, and the description will be mainly focused on the matters different from the pivot door 5 of the first embodiment. Furthermore, regarding the pivot door 5 of the second embodiment, the same names and symbols as those of the pivot door 5 of the first embodiment will be used for the configurations corresponding to those of the pivot door 5 of the first embodiment.

[0046] Fig. 13 is a perspective view showing the pivot door 5 of the second embodiment, and shows a part of the pivot door 5 in the up-down direction, similar to Fig. 7. Fig. 14 is a perspective view showing the vertical member 30 of the pivot door 5 of the second embodiment, and Fig. 15 is a perspective view showing the screen 40 and the support member 50 of the pivot door 5 of the second embodiment. As shown in the drawings, in the pivot door 5 of the second embodiment, the panel portion 41 of the screen 40 is formed in a hollow shape. Also, the restricting portion 53 of the support member 50 is provided at least one of (either one or both) a position above and a position below the support portion 52, and protrudes toward the pivot shaft portion 33 of the vertical member 30.

[0047] The support member 50 has a guide portion 56 provided continuously with the regulating portion 53. The guide portion 56, like the regulating portion 53, is provided at least one of a position above and a position below the support portion 52, and protrudes from the fixed portion 51 toward the shoji screen 40. In the pivot door 5 of the second embodiment, the regulating portion 53 and the guide portion 56 are provided only at a position above and a position below the support portion 52 (here, the lower position). Therefore, the support portion 52 including the placement portion 54 and the placement portion 55 is disposed at a position above the regulating portion 53 and the guide portion 56. The regulating portion 53 is formed at the end of the guide portion 56 located on the shoji screen 40 side, and protrudes from the guide portion 56 toward the shoji screen 40.

[0048] FIG. 16 is a cross-sectional view showing the pivot door 5 cut along the X6-X6 line in FIG. 13, showing the pivot door 5 at a location where the support member 50 is not present. FIG. 17 is a cross-sectional view showing the pivot door 5 cut along the X7-X7 line in FIG. 13, showing the pivot door 5 at the support portion 52 of the support member 50. FIG. 18 is a cross-sectional view showing the pivot door 5 cut along the X8-X8 line in FIG. 13, showing the pivot door 5 at the regulating portion 53 and the guide portion 56 of the support member 50. FIG. 16A, FIG. 17A, and FIG. 18A show the shoji screen 40 in the fully closed position, and FIG. 16B, FIG. 17B, and FIG. 18B show the shoji screen 40 in the fully open position. In FIG. 16, FIG. 17, and FIG. 18, the door end portion 42 side of the shoji screen 40 is omitted. In FIG. 18, the support portion 52 of the support member 50 located above the pivot shaft portion 33 of the vertical member 30 and the engagement portion 44 of the screen 40 is shown by a chain line.

[0049] As shown in the figure, the abutment portion 48 of the shoji 40 is formed at the end of the engagement portion 44 located on the vertical member 30 side, protrudes from the engagement portion 44 toward the guide portion 56 of the support member 50, and is disposed opposite the guide portion 56. The guide portion 56 is disposed along the pivot shaft portion 33 of the vertical member 30 in a state separated from the pivot shaft portion 33, and forms an accommodation space 6 between the guide portion 56 and the pivot shaft portion 33 to movably accommodate the abutment portion 48 and the engagement portion 44. The accommodation space 6 is an arc-shaped gap formed between the guide portion 56 and the pivot shaft portion 33, and is open toward the shoji 40 side. The regulating portion 53 of the support member 50 is located at the open end of the accommodation space 6 located on the shoji 40 side, and protrudes from the guide portion 56 toward the pivot shaft portion 33. The regulating portion 53 is disposed between the guide portion 56 and the pivot shaft portion 33 in a state separated from the pivot shaft portion 33, and faces the pivot shaft portion 33.

[0050] The abutment portion 48 of the shoji screen 40 is disposed between the guide portion 56 and the pivot shaft portion 33, and the engagement portion 44 of the shoji screen 40 is disposed between the guide portion 56 and the pivot shaft portion 33 and between the regulating portion 53 and the pivot shaft portion 33. The abutment portion 48 and the engagement portion 44 are accommodated in the accommodation space 6 so as to be movable in the pivot direction (open direction, close direction) of the shoji screen 40, and are sandwiched between the guide portion 56 and the pivot shaft portion 33 within the accommodation space 6. As the shoji screen 40 rotates in the pivot direction, the abutment portion 48 moves along the guide portion 56, and the engagement portion 44 moves along the pivot shaft portion 33. As the shoji screen 40 rotates, the engagement portion 44 moves between the regulating portion 53 and the pivot shaft portion 33 in the pivot direction of the shoji screen 40.

[0051] In the storage space 6 between the guide portion 56 and the pivot shaft portion 33, the abutment portion 48 of the shoji screen 40 is guided by the guide portion 56 and moves in the rotation direction of the shoji screen 40 as the shoji screen 40 rotates in the rotation direction. In addition, when the shoji screen 40 rotates in the opening direction, the abutment portion 48 is guided by the guide portion 56 toward the regulating portion 53 of the support member 50 in the storage space 6 and abuts against the regulating portion 53. In this way, when the shoji screen 40 rotates in the opening direction toward the fully open position, the abutment portion 48 is guided by the guide portion 56 and abuts against the regulating portion 53. As a result, the abutment portion 48 reliably abuts against the regulating portion 53 and stops, stopping the rotation of the shoji screen 40 in the opening direction. In addition, the abutment portion 48 is prevented from coming off the regulating portion 53 and moving to the outside of the storage space 6, and the rotation of the shoji screen 40 in the opening direction is regulated by the regulating portion 53.

[0052] In the pivoting door 5 of the second embodiment, the pivoting of the screen 40 in the opening direction is restricted, limiting the opening angle of the screen 40 and preventing the engagement portion 44 of the screen 40 from coming off the pivot shaft portion 33 of the vertical member 30. In addition, the abutment portion 48 of the screen 40 is stopped by the restricting portion 53 of the support member 50, so that the pivoting of the screen 40 in the opening direction can be reliably restricted. Even if the opening angle of the screen 40 is increased, the guide portion 56 can ensure that the abutment portion 48 abuts against the restricting portion 53. Therefore, the opening angle of the screen 40 can be increased.

[0053] Third embodiment Next, a pivot door 5 of a third embodiment will be described. In the pivot door 5 of the third embodiment, the description of the same matters as those of the pivot door 5 of the first embodiment will be omitted, and the description will be mainly focused on the matters different from the pivot door 5 of the first embodiment. In addition, in the pivot door 5 of the third embodiment, the same names and symbols as those of the pivot door 5 of the first embodiment will be used for the configurations corresponding to those of the pivot door 5 of the first embodiment.

[0054] Fig. 19 is a perspective view showing the pivot door 5 of the third embodiment, and shows a part of the pivot door 5 in the up-down direction, similar to Fig. 7. Fig. 20 is a perspective view showing the vertical member 30 of the pivot door 5 of the third embodiment, and Fig. 21 is a perspective view showing the screen 40 and the support member 50 of the pivot door 5 of the third embodiment. As shown in the figure, the pivot door 5 of the third embodiment includes, in addition to the configuration of the pivot door 5 of the first embodiment, a fall-prevention mechanism 7 that prevents the engagement portion 44 of the screen 40 from coming off the pivot shaft portion 33 of the vertical member 30. The configuration of the pivot door 5 other than the fall-prevention mechanism 7 is the same as that of the pivot door 5 of the first embodiment.

[0055] The engagement portion 44 of the screen 40 is releasably engaged with the pivot shaft portion 33 of the vertical member 30, and is disengaged from the pivot shaft portion 33 when it comes off the pivot shaft portion 33. In response to this, the support member 50 has a blocking portion 57 that blocks the screen 40 from moving in a direction in which the engagement portion 44 comes off the pivot shaft portion 33, and the screen 40 has a disengagement prevention portion 49 that abuts against the blocking portion 57 to prevent the engagement portion 44 from disengaging from the pivot shaft portion 33. The blocking portion 57 of the support member 50 and the disengagement prevention portion 49 of the screen 40 form a disengagement prevention mechanism 7 that prevents the engagement portion 44 from disengaging from the pivot shaft portion 33.

[0056] The direction in which the engaging portion 44 comes off from the pivot shaft portion 33 is the direction in which the engaging portion 44 is released from the pivot shaft portion 33 and the direction in which the engaging portion 44 moves away from the pivot shaft portion 33. The support member 50, by the blocking portion 57 with which the anti-detachment portion 49 abuts, prevents the screen 40 from moving in the direction in which the engaging portion 44 is released from the pivot shaft portion 33 and prevents the engaging portion 44 from moving away from the pivot shaft portion 33. In addition, the anti-detachment portion 49 of the screen 40 abuts against the blocking portion 57 to prevent the screen 40 from moving and the engaging portion 44 from moving away from the pivot shaft portion 33, thereby preventing the engaging portion 44 from being released from the pivot shaft portion 33.

[0057] The blocking portion 57 of the support member 50 is a protrusion (blocking protrusion) protruding from the end surface portion 58 of the support member 50, and protrudes from the end surface portion 58 toward the engagement portion 44 of the shoji screen 40. The end surface portion 58 of the support member 50 is a portion located on the end surface of the support member 50 in the longitudinal direction of the vertical member 30, and is arranged toward the engagement portion 44. The slip-stop portion 49 of the shoji screen 40 is a protrusion (stopping protrusion) protruding from the engagement portion 44, and protrudes from the engagement portion 44 toward the end surface portion 58 of the support member 50. The slip-stop portion 49 is provided at the end of the engagement portion 44 by cutting out a part of the end of the engagement portion 44 facing the notch portion 45 of the shoji screen 40 and the end surface portion 58 of the support member 50. The slip-stop portion 49 protrudes from the engagement portion 44 toward the notch portion 45, and is formed away from the connection portion 46 and the abutment portion 48 of the shoji screen 40.

[0058] Here, the end surface portion 58 of the support member 50 is the lower surface portion of the support member 50 and the support portion 52, and is disposed above the lower engagement portion 44 of the upper and lower engagement portions 44 of the shoji screen 40. The blocking portion 57 of the support member 50 protrudes downward from the end surface portion 58 toward the lower engagement portion 44 and is disposed above the lower engagement portion 44. The slip prevention portion 49 of the shoji screen 40 is provided at the upper end portion of the lower engagement portion 44, protrudes upward from the lower engagement portion 44 toward the end surface portion 58, and is disposed below the end surface portion 58. The lower rotation shaft portion 33 of the upper and lower rotation shaft portions 33 of the vertical member 30 has a step portion 35 on which the blocking portion 57 is disposed. The step portion 35 is formed at the upper end portion of the lower rotation shaft portion 33 and is located at the tip portion in the protruding direction of the rotation shaft portion 33.

[0059] FIG. 22 is a vertical cross-sectional view showing the pivot door 5 of the third embodiment, and shows the vertical member 30, the screen 40, and the support member 50 with a portion of the screen 40 omitted. FIG. 22A shows the screen 40 in the fully closed position, and FIG. 22B shows the screen 40 in the fully open position. FIG. 23 is a horizontal cross-sectional view showing the pivot door 5 of the third embodiment, showing the pivot door 5 at the blocking portion 57 of the support member 50 and the anti-detachment portion 49 of the screen 40. FIG. 23A shows the pivot door 5 and the screen 40 in the fully closed position cut along the X9-X9 line in FIG. 22A, and FIG. 23B shows the pivot door 5 and the screen 40 in the fully open position cut along the X10-X10 line in FIG. 22B. In Fig. 23, the door end 42 side of the shoji screen 40 is omitted, and the blocking portion 57 of the support member 50 and the stopper portion 49 of the shoji screen 40 are hatched. Also, in Fig. 23, the support member 50 located above the pivot shaft portion 33 of the vertical member 30 and the engagement portion 44 of the shoji screen 40 is shown by a chain line.

[0060] As shown in the figure, in the longitudinal direction of the vertical member 30, the end surface portion 58 of the support member 50 and the engagement portion 44 of the shoji screen 40 are arranged opposite to each other with a gap therebetween. The blocking portion 57 of the support member 50 and the slip-stop portion 49 of the shoji screen 40 are arranged between the end surface portion 58 of the support member 50 and the engagement portion 44 of the shoji screen 40 and abut against each other. The blocking portion 57 of the support member 50 faces the engagement portion 44 of the shoji screen 40 while being spaced from the engagement portion 44 of the shoji screen 40, and is arranged at the tip of the pivot shaft portion 33 of the vertical member 30 in the protruding direction. The slip-stop portion 49 of the shoji screen 40 faces the end surface portion 58 of the support member 50 while being spaced from the end surface portion 58 of the support member 50, and is arranged along the pivot shaft portion 33.

[0061] When the screen 40 is closed, the stopper 49 of the screen 40 is disposed away from the blocking portion 57 of the support member 50 (see Figs. 22A and 23A). The stopper 49 and the blocking portion 57 are disposed away from each other in the rotation direction of the screen 40, and face each other in the rotation direction of the screen 40. As the screen 40 rotates in the rotation direction (open direction, close direction), the stopper 49 moves along the pivot shaft 33 of the vertical member 30, approaching or moving away from the blocking portion 57. The blocking portion 57 is located forward in the movement direction of the stopper 49 that accompanies the rotation of the screen 40 in the opening direction, and is disposed at a position where the stopper 49 can come into contact with the stopper 49 in the movement direction of the stopper 49. The anti-falling portion 49 approaches the blocking portion 57 as the screen 40 rotates in the opening direction, and comes into contact with the blocking portion 57 when the screen 40 is in the open state (see Figures 22B and 23B).

[0062] As the screen 40 rotates from the fully closed position in the opening direction, the anti-detachment portion 49 of the screen 40 moves (rotates) in the opening direction of the screen 40 toward the blocking portion 57 of the support member 50, gradually approaching the blocking portion 57. When the screen 40 is open, the anti-detachment portion 49 abuts against the blocking portion 57, and the anti-detachment portion 49 and the screen 40 stop. Here, the anti-detachment portion 49 abuts against the blocking portion 57 when the screen 40 is positioned in the fully open position and open. Also, when the screen 40 is positioned in a position shifted from the fully open position toward the fully closed position and open, the anti-detachment portion 49 abuts against the blocking portion 57 when a force acts on the screen 40 in a direction that causes the engagement portion 44 to come off the pivot shaft portion 33.

[0063] The screen 40 rotates in the opening direction from the fully closed position to the fully open position, and stops at the fully open position when the abutment portion 48 abuts against the regulating portion 53. The anti-detachment portion 49 of the screen 40 abuts against the blocking portion 57 of the support member 50 when the abutment portion 48 abuts against the regulating portion 53, and abuts against the blocking portion 57 when a force in a direction in which the engaging portion 44 comes off the pivot shaft portion 33 acts on the screen 40 with a gap being generated between the abutment portion 48 and the regulating portion 53. When the screen 40 is pulled in a direction in which the engaging portion 44 comes off the pivot shaft portion 33, the anti-detachment portion 49 abuts against and gets caught on the blocking portion 57, and the screen 40 stops. The direction in which the engaging portion 44 comes off the pivot shaft portion 33 is the direction in which the pivot shaft portion 33 comes out of the engaging groove portion 47 of the engaging portion 44.

[0064] In this way, when a force acts on the screen 40 in a direction in which the engaging portion 44 comes off the pivot shaft portion 33, the movement of the screen 40 is prevented by the blocking portion 57 of the support member 50 against which the anti-detachment portion 49 of the screen 40 comes into contact. This prevents the pivot shaft portion 33 from slipping out of the engaging groove portion 47 of the engaging portion 44, and prevents the engaging portion 44 from coming off the pivot shaft portion 33, so that the engaging portion 44 is maintained in an engaged state with the pivot shaft portion 33. In addition, with the abutting portion 48 of the screen 40 in contact with the restricting portion 53 of the support member 50, the anti-detachment portion 49 comes into contact with the blocking portion 57, and the movement of the screen 40 is prevented by the blocking portion 57, and the anti-detachment portion 49 prevents the engaging portion 44 from coming off the pivot shaft portion 33.

[0065] Due to the respective tolerances of the engagement portion 44 of the shoji 40 and the pivot shaft portion 33 of the vertical member 30, the dimensional difference between the engagement portion 44 and the pivot shaft portion 33 changes, and the engagement allowance of the engagement portion 44 with the pivot shaft portion 33 and the degree of engagement of the engagement portion 44 with the pivot shaft portion 33 change. Even in such a case, the engagement portion 44 of the shoji 40 is maintained in an engaged state with the pivot shaft portion 33 of the vertical member 30 by the blocking portion 57 of the support member 50 and the slip-stop portion 49 of the shoji 40, and the shoji 40 can be stably held to the vertical member 30. In addition, it is possible to prevent the shoji 40 from falling off the pivot shaft portion 33. The slip-stop portion 49 is disposed away from the blocking portion 57 when the shoji 40 is closed, approaches the blocking portion 57 as the shoji 40 rotates in the opening direction, and abuts against the blocking portion 57 when the shoji 40 is open. Therefore, without impeding the rotation of the screen 40, the engagement portion 44 can be prevented from coming off the pivot shaft portion 33 when the screen 40 is open.

[0066] As described above, the present embodiment discloses the pivot door described in the following (1) to (8).

[0067] (1) A pivoting door comprising a vertical member, a sash that is pivotally attached to the vertical member and opens and closes, and a support member that supports the sash, The vertical member has a pivot shaft portion extending in a longitudinal direction of the vertical member, The shoji screen has an engagement portion that rotatably engages with the pivot shaft portion, The support member is a pivoting door having a fixing portion that is fixed to the vertical member and a mounting portion on which the engagement portion is placed. In the pivoting door described in (1), the sash of the pivoting door can be stably supported by the support member, thereby improving the stability of the sash.

[0068] (2) In the case of the pivoting door described in (1), The vertical member has upper and lower pivot shaft portions spaced apart in a longitudinal direction of the vertical member, The support member is a pivot door having a mounting portion that is placed on the lower pivot shaft portion. In the pivoting door described in (2), the mounting portion of the support member is supported by the pivot shaft portion of the vertical member, so that the support member can be stably positioned in a position to support the engagement portion of the shoji screen.

[0069] (3) In the case of a revolving door as described in (1) or (2), The fixing portion is fixed to the vertical member by a fixing device, The support member and the fixing device are a pivoting door that is covered by the screen when the screen is closed. In the pivot door described in (3), when the door screen is closed, the exposure of the support members and fixing devices is suppressed, thereby improving the design of the pivot door.

[0070] (4) In the case of a revolving door described in any one of (1) to (3), The support member has a restricting portion that protrudes toward the door and restricts the door from pivoting in an opening direction, The shoji screen is a pivoting door having an abutment portion that abuts against the regulating portion to stop the shoji screen from pivoting in the opening direction. In the pivoting door described in (4), the pivoting of the shoji screen in the opening direction can be regulated to limit the opening angle of the shoji screen and prevent the engagement portion of the shoji screen from coming off the pivot axis portion of the vertical member.

[0071] (5) In the case of a revolving door as described in any one of (1) to (4), The support member has a blocking portion that blocks the screen from moving in a direction in which the engagement portion is disengaged from the pivot shaft portion, The shoji screen is a pivoting door having a stopper portion that abuts against the blocking portion to prevent the engagement portion from coming off the pivot shaft portion. In the pivoting door described in (5), the engagement portion of the screen is kept engaged with the pivot shaft portion of the vertical member by the blocking portion and the anti-detachment portion, so that the screen can be stably held on the vertical member.

[0072] (6) In the case of the pivoting door described in (5), The anti-detachment portion is positioned away from the blocking portion when the screen is closed, and approaches the blocking portion as the screen is rotated in the opening direction, and abuts against the blocking portion when the screen is open. In the pivoting door described in (6), the pivoting of the screen is not hindered, and when the screen is in the open position, the anti-detachment portion of the screen can be abutted against the blocking portion of the support member to prevent the engagement portion of the screen from coming off the pivot shaft portion of the vertical member.

[0073] (7) In the case of a revolving door as described in any one of (1) to (3), The support member has a restricting portion that protrudes toward the pivot shaft portion and restricts the pivoting of the screen in the opening direction, The shoji screen is a pivoting door having an abutment portion that abuts against the regulating portion to stop the shoji screen from pivoting in the opening direction. In the pivoting door described in (7), the pivoting of the screen in the opening direction can be regulated to limit the opening angle of the screen, and the engagement portion of the screen can be prevented from coming off the pivot axis portion of the vertical member.

[0074] (8) In the case of the pivoting door described in (7), the support member has a guide portion provided continuously with the restricting portion and defining an accommodation space between the guide portion and the pivot shaft portion to movably accommodate the abutment portion, the restricting portion protrudes from the guide portion toward the pivot shaft portion and is disposed between the guide portion and the pivot shaft portion, The abutment portion is guided by the guide portion toward the regulating portion within the storage space and abuts against the regulating portion when the sliding door is rotated in the opening direction. In the pivoting door described in (8), the abutment portion of the screen can be stopped by the regulating portion of the support member, thereby reliably regulating the rotation of the screen in the opening direction. [Explanation of symbols]

[0075] Reference Signs List 1 curtain wall, 2 curtain wall unit, 2A to 2D panel body, 3A to 3M curtain wall unit, 4 frame body, 4A to 4D opening, 5 pivot door, 6 storage space, 7 anti-detachment mechanism, 10 building, 11 framework, 12 exterior wall, 20 upper frame, 21 lower frame, 22 vertical frame, 23 vertical frame, 24 vertical central rib, 25 interlining, 26 holding portion, 27 storage portion, 28 lighting device, 29 opening, 30 vertical member, 31 receiving a mounting portion, 32...mounting portion, 33...pivot shaft portion, 34...notch portion, 35...step portion, 40...shoji screen, 41...panel portion, 42...door end portion, 43...hanging portion, 44...engagement portion, 45...notch portion, 46...connection portion, 47...engagement groove portion, 48...contact portion, 49...anti-detachment portion, 50...support member, 51...fixing portion, 52...support portion, 53...regulating portion, 54...receiving portion, 55...receiving portion, 56...guide portion, 57...blocking portion, 58...end surface portion, 60...fixing device, 61...back panel.

Claims

1. A pivoting door comprising a vertical member, a sash that is pivotally attached to the vertical member and opens and closes, and a support member that supports the sash, The vertical member has a pivot shaft portion extending in a longitudinal direction of the vertical member, The shoji screen has an engagement portion that rotatably engages with the pivot shaft portion, The support member is a pivoting door having a fixing portion that is fixed to the vertical member and a mounting portion on which the engagement portion is placed.

2. The pivot door according to claim 1, The vertical member has upper and lower pivot shaft portions spaced apart in a longitudinal direction of the vertical member, The support member is a pivot door having a mounting portion that is placed on the lower pivot shaft portion.

3. The pivot door according to claim 1 or 2, The fixing portion is fixed to the vertical member by a fixing device, The support member and the fixing device are a pivoting door that is covered by the screen when the screen is closed.

4. The pivot door according to claim 1 or 2, The support member has a restricting portion that protrudes toward the door and restricts the door from pivoting in an opening direction, The shoji screen is a pivoting door having an abutment portion that abuts against the regulating portion to stop the shoji screen from pivoting in the opening direction.

5. The pivot door according to claim 1 or 2, The support member has a blocking portion that blocks the screen from moving in a direction in which the engagement portion is disengaged from the pivot shaft portion, The shoji screen is a pivoting door having a stopper portion that abuts against the blocking portion to prevent the engagement portion from coming off the pivot shaft portion.

6. The pivot door according to claim 5, The anti-detachment portion is positioned away from the blocking portion when the screen is closed, and approaches the blocking portion as the screen is rotated in the opening direction, and abuts against the blocking portion when the screen is open.

7. The pivot door according to claim 1 or 2, The support member has a restricting portion that protrudes toward the pivot shaft portion and restricts the pivoting of the screen in the opening direction, The shoji screen is a pivoting door having an abutment portion that abuts against the regulating portion to stop the shoji screen from pivoting in the opening direction.

8. The pivot door according to claim 7, the support member has a guide portion provided continuously with the restricting portion and defining an accommodation space between the guide portion and the pivot shaft portion to movably accommodate the abutment portion, the restricting portion protrudes from the guide portion toward the pivot shaft portion and is disposed between the guide portion and the pivot shaft portion, The abutment portion is guided by the guide portion toward the regulating portion within the storage space and abuts against the regulating portion when the sliding door is rotated in the opening direction.

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