Shoji screen and shoji screen assembly structure

Abstract

To provide a shoji screen and a shoji screen assembly structure that enable smooth opening and closing of the shoji screen in a tilted building.SOLUTION: The shoji screen has an upper crosspiece 13 that engages with a lintel extending in the left-right direction. The upper crosspiece 13 has a first recess 33 that has an opening extending in the left-right direction on the top surface of the upper crosspiece 13, a pair of second recesses 34 that open at each end in the left-right direction on the bottom surface of the first recess 33 and extend diagonally downward toward the outside in the left-right direction, and a bow-shaped leaf spring 30 that has both ends that engage with the pair of second recesses 34 and protrudes upward from the opening.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a shoji screen and a shoji screen assembly structure. [Background technology]

[0002] For example, as shown in Patent Document 1, shoji screens are known as a type of fitting used to open and close openings in buildings. A shoji screen has a framework made up of a lower crosspiece, an upper crosspiece, and a pair of vertical crosspieces connecting the ends of the lower crosspiece and the upper crosspiece. A shoji screen is assembled so that the lower crosspiece engages with a threshold groove formed in the threshold, and the upper crosspiece engages with a lintel groove formed in the lintel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-2213 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if a building tilts, the upper rails may easily come out of the lintel groove, making it difficult to open and close the shoji screens smoothly. Therefore, there is a need for technology that allows the shoji screens to be opened and closed smoothly even in a tilted building. [Means for solving the problem]

[0005] A shoji screen that solves the above problem has an upper rail that engages with a lintel groove extending in the left-right direction. The upper rail has a pair of insertion recesses that are arranged side by side in the left-right direction and extend diagonally downward from an opening facing upward toward the outside in the left-right direction, and a leaf spring whose end is inserted into each of the pair of insertion recesses and protrudes upward in an arch shape from the upper surface of the upper rail. [Effects of the Invention]

[0006] According to the present invention, the opening and closing operation of the shoji screen can be performed smoothly in a tilted building. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of an embodiment of a shoji screen as seen from inside a room. [Figure 2] FIG. 2 is a diagram showing the schematic configuration of a shoji screen as seen from the outside of a room. [Figure 3] FIG. 3 is an enlarged perspective view showing the mounting portion of the leaf spring. [Figure 4] FIG. 4 is a cross-sectional view of the upper rail at the mounting portion of the leaf spring. [Figure 5] FIG. 5 is a cross-sectional view of a shoji screen in a plane direction perpendicular to the left-right direction. [Figure 6] Figure 6(a) is a diagram showing a state in which the shoji screen is positioned at the left end of the opening, and Figure 6(b) is a diagram showing a state in which the shoji screen is positioned at the right end of the opening. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of a shoji screen and a shoji screen assembly structure will be described with reference to Figs. As shown in FIG. 1, the shoji screen 10 has a framework 11. The framework 11 has a lower crosspiece 12, an upper crosspiece 13, an upper middle crosspiece 14A, a lower middle crosspiece 14B, a left vertical crosspiece 15A, and a right vertical crosspiece 15B. These are made of wood. The lower crosspiece 12, the upper crosspiece 13, the upper middle crosspiece 14A, and the lower middle crosspiece 14B extend in the left-right direction. The left-right direction is the opening and closing direction of the shoji screen 10. The direction perpendicular to the plane of the paper in FIG. 1 is the thickness direction of the shoji screen 10.

[0009] The left vertical beam 15A and the right vertical beam 15B extend in the vertical direction. The lower beam 12 connects the lower end of the left vertical beam 15A to the lower end of the right vertical beam 15B. The upper beam 13 connects the upper end of the left vertical beam 15A to the upper end of the right vertical beam 15B. The upper beam 13 has a lintel engagement portion 13a that engages with the lintel groove. The lintel engagement portion 13a is part of the upper beam 13. The upper center beam 14A and the lower center beam 14B connect the left vertical beam 15A to the right vertical beam 15B between the lower beam 12 and the upper beam 13.

[0010] The frame 11 has a left side upright rib 16A and a right side upright rib 16B. These are made of wood. The left side upright rib 16A extends vertically to the left of the center in the left-right direction. The right side upright rib 16B extends vertically to the right of the center in the left-right direction. The left side upright rib 16A and the right side upright rib 16B are connected to the lower crosspiece 12, the upper crosspiece 13, and the middle crosspieces 14A and 14B.

[0011] The shoji screen 10 has a child shoji screen 20 that can be opened and closed in the left-right direction in the area surrounded by a pair of upper and lower center bars 14A, 14B and a pair of left and right vertical bars 15A, 15B. Figure 1 shows the shoji screen 10 with the child shoji screen 20 in a closed state. Shoji paper 21 is attached to the child shoji screen 20, as indicated by dots. The child shoji screen 20 is formed so that the left vertical bar 16A and the right vertical bar 16B can be opened and closed on the indoor side.

[0012] The frame 11 has central uprights 16C. The central uprights 16C extend vertically through the center in the left-right direction. One of the central uprights 16C connects the upper crosspiece 13 and the upper middle crosspiece 14A. One of the central uprights 16C connects the lower crosspiece 12 and the lower middle crosspiece 14B.

[0013] The framework 11 has horizontal bars 18 extending in the left-right direction at various locations. Between the lower crosspiece 12 and the lower middle crosspiece 14B, horizontal bars 18 connecting the left vertical bar 15A and the right vertical bar 15B are arranged in parallel in the vertical direction. These horizontal bars 18 are connected to each of the left vertical bar 16A, the right vertical bar 16B, and the center vertical bar 16C.

[0014] Between the lower center crosspiece 14B and the upper center crosspiece 14A, horizontal bars 18 are arranged in the vertical direction to connect the left vertical crosspiece 15A and the left vertical bar 16A, and horizontal bars 18 are arranged in the vertical direction to connect the right vertical bar 15B and the right vertical bar 16B.

[0015] Between the upper middle crosspiece 14A and the upper crosspiece 13, horizontal pieces 18 are arranged in a vertical direction, connecting the left vertical piece 15A and the right vertical piece 15B. The horizontal pieces 18 are connected to each of the left vertical piece 16A, the right vertical piece 16B, and the central vertical piece 16C.

[0016] As shown in FIG. 2, the shoji screen 10 includes a light collecting panel 25 at each opening formed by the lower crosspiece 12, the upper crosspiece 13, the pair of upper and lower middle crosspieces 14A and 14B, the pair of left and right vertical crosspieces 15A and 15B, and the vertical crosspieces 16A, 16B, and 16C. For example, the light collecting panel 25 is a glass panel. Alternatively, the light collecting panel 25 is a resin panel such as an acrylic resin. The light collecting panel 25 may be a transparent panel or a translucent panel. The horizontal crosspiece 18 is disposed on the interior side of the room relative to the light collecting panel 25. The outer edge of the light collecting panel 25 engages with a groove formed in a member forming each opening. The grooves that open downward in the upper crosspiece 13, upper middle crosspiece 14A, and lower middle crosspiece 14B are formed at the right or left end to a depth that allows the light collecting panel 25 to be attached and detached.

[0017] As shown in FIG. 3, a leaf spring 30 is attached to the upper crosspiece 13. The leaf spring 30 is attached, for example, to the center of the upper crosspiece 13 in the left-right direction. The leaf spring 30 is attached to the upper crosspiece 13 by engaging with a recess 31 that opens into the upper surface of the upper crosspiece 13. When engaged with the recess 31, the leaf spring 30 has an arched shape that extends upward from the lintel engagement portion 13a, i.e., extends upward from the upper surface of the upper crosspiece 13. The leaf spring 30 can be made, for example, from sooted bamboo having a thickness of about 1.5 mm.

[0018] As shown in FIG. 4 , the recess 31 has a first recess 33 and a pair of second recesses 34. The first recess 33 is recessed into the upper surface of the upper rail 13. The first recess 33 is formed in a flat shape extending in the left-right direction. The height of the first recess 33 may be greater or less than the thickness of the leaf spring 30. The second recess 34 is an insertion recess into which the end of the leaf spring 30 is inserted. The second recess 34 has an opening facing upward at the left or right end of the bottom surface of the first recess 33. The second recess 34 extends diagonally downward from each end of the bottom surface of the first recess 33 toward the outside in the left-right direction. The first recess 33 and the second recess 34 are formed using various cutting tools.

[0019] As shown in Figure 5, the lintel engagement portion 13a of the upper crosspiece 13 and the leaf spring 30 are disposed inside the lintel groove 42 of the lintel 41. The upper crosspiece 13 has edge portions 13b, which are disposed below the lintel 41 and connected to the base end of the lintel engagement portion 13a, on both the indoor and outdoor sides of the lintel engagement portion 13a.

[0020] The edge portion 13b may protrude from the lintel engagement portion 13a by the same amount on both the indoor and outdoor sides. Alternatively, the edge portion 13b may protrude less from the lintel engagement portion 13a on either the indoor or outdoor side. In such a case, it is preferable to make the protrusion amount smaller on the side where a sliding shoji screen is installed. In Figure 5, it is assumed that a sliding shoji screen is installed on the indoor side, and the protrusion amount of the edge portion 13b on the indoor side is smaller than that of the edge portion 13b on the outdoor side.

[0021] Furthermore, the shoji screen 10 has a plurality of rollers 37 on the lower rail 12. The rollers 37 are attached to the lower rail 12 so that they are aligned in the left-right direction at a predetermined interval (see Figures 1 and 2). When the shoji screen 10 is opened or closed, the wheels of the rollers 37 roll on rails 45 laid in a threshold groove 44 of the threshold 43. The rollers 37 guide the shoji screen 10 along the rails 45, thereby reducing the frictional resistance that occurs between the shoji screen 10 and the threshold 43. A filler 46 may be laid below the rail 45 in the threshold groove 44 for the purpose of height adjustment, etc.

[0022] The mounting position and length of the leaf spring 30, the height and length of the first recess 33, and the presence or absence of a filler 46 are designed based on the results of actual measurements of the height of the lintel 41 relative to the threshold 43 at multiple points.

[0023] (Operation of the embodiment) For example, when the lintel groove 42 is inclined downward to the right, the shoji screen 10 moves between a state in which the left vertical bar 15A abuts against the left vertical frame 48 shown in FIG. 6(a) and a state in which the right vertical bar 15B abuts against the right vertical frame 49 shown in FIG. 6(b). When the shoji screen 10 moves from the state shown in FIG. 6(a) to the state shown in FIG. 6(b), the leaf spring 30 elastically deforms so that the amount of projection from the top surface of the upper bar 13 gradually decreases. Conversely, when the shoji screen 10 moves from the state shown in FIG. 6(b) to the state shown in FIG. 6(a), the leaf spring 30 elastically deforms so that the amount of projection from the top surface of the upper bar 13 gradually increases. Note that the lintel groove 42 is indicated by a dot in FIGS. 6(a) and 6(b).

[0024] The effects of this embodiment will be described. (1) The upper crosspiece 13 has a pair of second recesses 34 (insertion recesses) arranged side by side in the left-right direction and extending diagonally downward from an opening facing upward toward the outside in the left-right direction, and a leaf spring 30 whose end is inserted into each of the pair of second recesses 34 and which protrudes upward in a bow shape from the top surface of the upper crosspiece 13.

[0025] As a result, even if the upper crosspiece 13 tries to come out of the lintel groove 42 when opening or closing the shoji screen 10, the leaf spring 30 will be caught in the lintel groove 42. As a result, the upper crosspiece 13 is less likely to come out of the lintel groove 42, allowing the shoji screen 10 to be opened or closed smoothly.

[0026] (2) The leaf spring 30 is attached to the upper rail 13 by inserting each end in the left-right direction into the second recess 34. Therefore, the leaf spring 30 can be easily replaced as needed.

[0027] (3) The upper crosspiece 13 has first recesses 33 recessed into the upper surface of the upper crosspiece 13, each having the opening of a second recess 34 at its bottom surface. With this configuration, even when leaf springs 30 of the same shape are attached, the amount of upward projection of the leaf springs 30 can be adjusted by adjusting the height of the first recesses 33. Therefore, the amount of upward projection of the leaf springs 30 can be adjusted without changing the shape (depth) of the second recesses 34, which are difficult to process. As a result, variation in the difficulty of processing the second recesses 34 can be reduced.

[0028] (4) The upper crosspiece 13 has a lintel engagement portion 13a that engages with the lintel groove 42. The upper crosspiece 13 has an edge portion 13b that connects to the base end of the lintel engagement portion 13a on both the indoor and outdoor sides of the lintel engagement portion 13a. This makes the edge portion 13b of the upper crosspiece 13 visible from both the indoor and outdoor sides, improving the design of the shoji screen 10. In addition, the thickness of the upper crosspiece 13, left vertical crosspiece 15A, right vertical crosspiece 15B, and lower crosspiece 12 can be increased without changing the shape of the existing lintel 41. As a result, the rigidity of the entire shoji screen 10 can be increased.

[0029] (5) The edge portion 13b may protrude less from the lintel engaging portion 13a on the side where the sliding shoji screen is installed. This allows the thickness of the upper crosspiece 13, the left vertical crosspiece 15A, the right vertical crosspiece 15B, and the lower crosspiece 12 to be increased while avoiding contact with the sliding shoji screen.

[0030] (6) Because the edge portions 13b are provided on both the indoor and outdoor sides, the lintel engagement portion 13a is formed at or near the center of the shoji screen 10 in the thickness direction, rather than being positioned toward the indoor or outdoor side. As a result, the leaf spring 30 attached to the lintel engagement portion 13a is also positioned at or near the center of the shoji screen 10 in the thickness direction. Therefore, even if the leaf spring 30 is forced downward by elastic deformation, the shoji screen 10 can receive the force at or near the center in the thickness direction. As a result, tilting of the shoji screen 10 due to the force of the leaf spring 30 is suppressed, allowing the shoji screen 10 to be opened and closed smoothly.

[0031] (7) A roller 37 is attached to the lower crosspiece 12 of the shoji screen 10 and is guided by a rail 45 laid in the threshold groove 44 of the threshold 43. This reduces the frictional resistance between the shoji screen 10 and the threshold 43, allowing the shoji screen 10 to be opened and closed smoothly even if the biasing force of the leaf spring 30 changes.

[0032] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. The rollers 37 only need to guide the shoji screen 10 along the threshold groove 44. Therefore, the rail 45 does not need to be installed.

[0033] The lower rail 12 may be engaged with the threshold groove 44 without using the door roller 37. The upper rail 13 may have an edge portion 13b only on the indoor side or the outdoor side relative to the lintel engagement portion 13a.

[0034] The upper rail 13 may be formed with only a pair of second recesses 34, i.e., a pair of insertion recesses. The mounting position of the leaf spring 30 may be set according to the measurement results of the relative positions of the lintel 41 and the threshold 43. Therefore, the mounting position of the leaf spring 30 is not limited to the center of the upper rail 13 in the left-right direction, but may be the left end or right end of the upper rail 13.

[0035] A plurality of leaf springs 30 may be attached to the shoji screen 10. The shoji screen 10 does not have to be equipped with a small shoji screen 20. [Explanation of symbols]

[0036] 10...shoji screen, 11...framework, 12...lower sash, 13...upper sash, 13a...lintel engagement portion, 13b...edge portion, 14A...upper middle sash, 14B...lower middle sash, 15A...left side vertical sash, 15B...right side vertical sash, 16A...left side vertical bar, 16B...right side vertical bar, 16C...central vertical bar, 18...horizontal bar, 20...child shoji screen, 21...shoji paper, 25...lighting board, 30...plate spring, 31...recess, 33...first recess, 34...second recess, 37...door roller, 41...lintel, 42...lintel groove, 43...threshold, 44...threshold groove, 45...rail, 46...filler, 48...left side vertical frame, 49...right side vertical frame.

Claims

1. A shoji screen having an upper rail that engages with a lintel groove extending in the left-right direction, The upper rail is a pair of insertion recesses arranged side by side in the left-right direction and extending obliquely downward from openings facing upward toward the outside in the left-right direction; a leaf spring whose end is inserted into each of the pair of insertion recesses and which protrudes upward in an arch shape from the upper surface of the upper rail; Shoji screen.

2. the insertion recess is a second recess, The upper rail has a first recess formed in an upper surface thereof, and each of the openings has a bottom surface. The shoji screen according to claim 1.

3. The upper rail is a lintel engagement portion having the first recess and engaging with the lintel groove; and edge portions disposed below the lintel on both the indoor and outdoor sides of the lintel engagement portion and connected to the base end of the lintel engagement portion. The shoji screen according to claim 2.

4. The shoji screen has a lower rail that engages with the threshold groove extending in the left-right direction, A door roller is attached to the lower rail to guide the shoji screen along the threshold groove. The shoji screen according to any one of claims 1 to 3.

5. An assembly structure for a shoji screen having an upper rail that engages with a lintel groove extending in the left-right direction, The upper rail is a pair of insertion recesses arranged side by side in the left-right direction and extending obliquely downward from openings facing upward toward the outside in the left-right direction; a leaf spring whose ends are inserted into the pair of insertion recesses and which protrudes upward in an arch shape from the upper surface of the upper rail, The shoji screen is assembled to the lintel with a part of the upper rail and the leaf spring disposed in the lintel groove. Shoji assembly structure.

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